JP2015156608A - Terminal, call system, and call method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem of labor and time required for a consumer viewing a television shopping program and communicating with a business operator (call center) even when using a call control system of a patent literature 1.

SOLUTION: A terminal, when receiving a predetermined wave propagating in space as input corresponding to a broadcast of a predetermined program for introducing an article or a predetermined advertisement broadcast for advertising the article, accesses a web site identified by a predetermined resource specifier extracted from the predetermined wave to display the web site on a screen included in the terminal, and originates a call to a predetermined terminal of a provider handling the article or a provider terminal when a predetermined mark arranged on the web site is pressed.

COPYRIGHT: (C)2015,JPO&INPIT

Description

  The present invention relates to a terminal, a call system, and a call method, and more particularly, to a terminal, a call system, and a call method for a general consumer to call a provider that provides a product.

  Generally, a consumer makes a phone call when he / she is interested in seeing a product advertisement and wants to make a call with a business provider (hereinafter referred to as “business”). Japanese Patent Application Laid-Open Publication No. 2004-228561 describes a technique for a consumer to make a call with a business operator.

  The call control system of Patent Document 1 includes a customer PC (Personal Computer), a web server, a business operator PC, and a call processing server (hereinafter referred to as “call server”). A web page is stored in the web server, and on the stored web page, a product advertisement and an icon for transmitting to a business are posted.

  When a customer sees a product advertisement on a web page and directly calls a business operator, the customer clicks the above-mentioned icon posted on the web page via the customer PC. When the icon is clicked, the web server downloads a user agent having a transmission function to the customer PC. The user agent downloaded to the customer PC sends a call signal including the customer ID to the call server. The call server relays the call signal to the operator PC. Upon receiving the call signal, the business operator PC stores the customer ID included in the call signal and makes a free Internet call with the customer PC.

  As described above, in the call control system disclosed in Patent Document 1, a customer (consumer) makes an Internet phone call with a business operator without entering a phone number with a single click of a web page icon. be able to.

  By the way, it is known that a consumer makes a call with an operator not only when viewing a product advertisement on a web page but also when viewing television shopping using television broadcasting. For example, if a consumer who has watched a TV shopping program on a TV has an interest in a product introduced in the TV program, he or she makes a call to a business operator (generally a call center established by the business operator). ing.

Special table 2008-521329 gazette

  However, even if the consumer who watches TV shopping uses the call control system of Patent Document 1, there is a problem that it takes time to contact the business operator (call center). This is because the call control system disclosed in Patent Document 1 does not provide the above-described icon (icon for contacting the operator) to the consumer in response to a TV shopping program displayed on the TV. For this reason, consumers who watch TV shopping had to look up the web page with the above icons and click it. As a result, a consumer who watches TV shopping takes time to contact a business operator (call center) even when using the call control system of Patent Document 1.

  In addition, viewers who watch TV shopping take time and trouble to contact the business operators, so they felt annoyed and to the extent that they were a little interested, they did not reach the stage of actually calling the business operators. . As a result, there has been a problem that the business operators cannot have contact with consumers and cannot obtain sales opportunities.

  It is an object of the present invention to provide a terminal, a call system, and a call method that solve the above problems.

  In order to achieve the above object, in the terminal of the present invention, a predetermined wave propagating in space is input corresponding to a broadcast of a predetermined program introducing a product or a predetermined advertisement broadcast promoting the product. And accessing a web page specified by a predetermined resource specifier extracted from the predetermined wave, displaying the web page on a screen provided to itself, and pressing a predetermined symbol arranged on the web page Then, a call is made to a predetermined terminal of the business operator handling the product, that is, the business operator terminal.

  In order to achieve the above object, a call system according to the present invention includes a terminal and a broadcast receiver, and the terminal broadcasts a predetermined program that introduces a product by a predetermined wave propagating in space, or the product. When input corresponding to a predetermined advertisement broadcast to be advertised, the web page specified by a predetermined resource specifier extracted from the predetermined wave is accessed and the web page is displayed on a screen provided to itself, When a predetermined symbol placed on a web page is pressed, a predetermined terminal of an operator that handles the product, that is, a terminal that transmits to the operator terminal, and the broadcast receiver A broadcast receiver that outputs the predetermined wave including the predetermined resource specifier corresponding to the broadcast or the predetermined advertisement broadcast.

  In order to achieve the above object, according to the calling method of the present invention, a predetermined wave propagating in space is input corresponding to a broadcast of a predetermined program introducing a product or a predetermined advertisement broadcasting promoting the product. Then, the web page specified by the predetermined resource specifier extracted from the predetermined wave is accessed and the web page is displayed on the screen provided to itself, and the predetermined symbol arranged on the web page is pressed. Then, a call is made to a predetermined terminal of the business operator handling the product, that is, the business operator terminal.

  ADVANTAGE OF THE INVENTION According to this invention, the consumer who watches TV shopping can contact the provider (call center) which provides goods, without an effort.

It is a figure for demonstrating the operation | movement outline | summary of the telephone call system in the 1st Embodiment of this invention. It is a figure which shows the structural example of the telephone call system in the 1st Embodiment of this invention. It is FIG. (1) for demonstrating operation | movement (operation | movement which transmits / receives the sound wave of a non-audible sound range) of the telephone call system in the 1st Embodiment of this invention. It is FIG. (2) for demonstrating operation | movement (operation | movement which transmits / receives the sound wave of a non-audible sound range) of the telephone call system in the 1st Embodiment of this invention. It is a figure for demonstrating operation | movement (operation | movement when performing transmission to the provider which provides goods) of the telephone call system in the 1st Embodiment of this invention. It is a figure which shows the structural example of the telephone call system in the 2nd Embodiment of this invention. It is a figure for demonstrating operation | movement (operation which establishes a session) of the telephone call system in the 2nd Embodiment of this invention. It is a figure for demonstrating operation | movement (operation | movement when performing a packet call) of the telephone call system in the 2nd Embodiment of this invention. It is a figure which shows the structural example of the telephone call system in the 3rd Embodiment of this invention.

  Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram for explaining an outline of the operation of the call system according to the first embodiment of the present invention.

<< First Embodiment >>
[Overview]
The call system according to the first embodiment displays an icon (for transmitting to a business providing a product) on the terminal screen corresponding to the TV shopping program displayed on the TV, and the icon is displayed by the consumer. It is a system that, when pressed, makes a call to a terminal owned by a business operator.

  In order to realize the above-described system, when the television shopping program to be broadcast is displayed on the screen, the television notifies the smartphone of the URL (Uniform Resource Locator) of the operator's web page using sound waves in a non-audible sound range. The smartphone extracts the URL from the sound wave in the non-audible sound range, accesses the web page indicated by the extracted URL (that is, the business operator's web page), and displays the business operator's web page on the screen provided in the business device. In addition to the product information, an icon for making a call to the provider is described on the company's web page, and the above-described icon is displayed on the terminal screen. When the icon is pressed by the consumer, the smartphone downloads a general transmission program (from a Web server provided in the system) and transmits the terminal to a terminal held by the operator using the transmission program. The terminal held by the business operator may be installed in a call center established by the business operator. Web is an abbreviation for World Wide Web.

  Consumers who watch TV shopping contact a business provider (call center) that provides products without having to perform multiple tasks by simply pressing an icon displayed on the smartphone screen corresponding to the TV shopping program. be able to.

  The configuration, function, and operation of the call system according to the first embodiment of the present invention will be described below.

[Description of configuration]
First, the configuration and function of the call system according to the first embodiment of the present invention will be described. FIG. 2 is a diagram illustrating a configuration example of the call system according to the first embodiment of the present invention.

(1) Configuration of Call System According to First Embodiment of Present Invention As shown in FIG. 2, the call system according to the present embodiment includes a television 1, a smartphone 2, a mobile phone network 3, and the Internet 4. , A gateway 5, a Web server 6, a general public network 7, a gateway 8, and an operator terminal 9.

  The cellular phone network 3 is connected to the Internet 4 via a gateway 5. The cellular phone network 3 is connected to the general public network 7 via the gateway 8. The smartphone 2 is connected to the operator terminal 9 via the mobile phone network 3, the gateway 8, and the general public network 7. The smartphone 2 is connected to the Web server 6 via the mobile phone network 3 and the gateway 5.

(2) Functions of each part constituting the call system according to the first embodiment of the present invention (2-1) Functions of the TV 1 (2-1-1) Functions of the TV 1 The TV 1 is a general TV function. Similarly to the above, a broadcast signal from a broadcast station (not shown) is received, and a TV shopping program is displayed on the screen together with sound. The broadcast signal described above includes the URL (Uniform Resource Locator) of the operator's web page. The broadcast provider may include the above-described URL in the broadcast signal upon request from the provider. The television 1 extracts a URL from the received broadcast signal, and outputs the extracted URL as a sound wave in a non-audible sound range. The reason why the sound wave is in a non-audible sound range is to prevent the viewer of the television from picking up the sound and feeling annoying. A sound wave in a non-audible sound range is a sound wave having a frequency of 20 kHz or more. In general, it is known that the frequency band of the audible sound range is 20 Hz to 20 kHz.

(2-1-2) Function of TV 1 (Details of URL output function)
The television 1 may realize outputting the URL as a sound wave in a non-audible sound range as follows.

  First, the television 1 converts the extracted URL (data) into an electric signal, and modulates the converted electric signal with a known modulation method to generate an electric signal having a predetermined frequency (for example, 20 kHz) in a non-audible sound range. . A known modulation method may be pulse width modulation. The television 1 outputs the generated electrical signal of a predetermined frequency (for example, 20 kHz) as a sound wave in a non-audible sound range from a general high-frequency speaker (tweeter) provided in the television 1. The high-frequency speaker is a general high-frequency speaker, but the upper limit of the reproduction frequency characteristic is 20 kHz or more so that sound waves in a non-audible sound range can be output.

  Note that the above-described known modulation method is not limited to pulse width modulation. Any known modulation method may be used as long as it generates an electric signal in a predetermined frequency band (for example, 20 kHz) in a non-audible sound range. The predetermined frequency is set in the television 1 by the manufacturer of the television 1.

(2-2) Functions of the smartphone 2 (2-2-1) Functions of the smartphone 2 (URL extraction function outline)
When the smartphone 2 is a terminal held by a consumer and receives a sound wave in a non-audible sound range (hereinafter referred to as “non-audible sound”) output from the television 1, the smartphone 2 extracts a URL from the received non-audible sound. The smartphone 2 includes a bandpass filter that extracts a predetermined frequency band of the non-audible sound and a microphone in order to collect the above-described non-audible sound. The above-described microphone is a well-known microphone (hereinafter referred to as a “high-pitched microphone”) whose upper limit of the frequency characteristic extends to 20 kHz or more so as to receive non-audible sound.

(2-2-2) Functions of the smartphone 2 (URL extraction function details)
The smartphone 2 may realize the URL extraction from the non-audible sound as follows.

  First, the smartphone 2 receives sound with the above-described treble microphone. The sound received by the high-frequency microphone includes not only inaudible sound but also audible sound. In order to extract only the non-audible sound, the above-described treble microphone uses the received sound as an electrical signal and outputs the electrical signal to a bandpass filter. The band-pass filter is a filter that passes only a signal in a predetermined frequency band (for example, around 20 kHz) of non-audible sound. A band pass filter outputs only the electrical signal of a predetermined | prescribed frequency band (for example, 20 kHz vicinity) among the input electrical signals to the smart phone 2 main body. The smartphone 2 demodulates the electrical signal having a predetermined frequency (for example, around 20 kHz) of the inaudible sound output from the bandpass filter by a known demodulation method. The smartphone 2 converts the demodulated electrical signal into a corresponding alphanumeric character. Alphanumeric characters corresponding to the electrical signal are set in the smartphone 2 in advance. The smartphone 2 regards the converted alphanumeric character string as a URL.

  The known demodulation method described above may be pulse width demodulation, but is not limited thereto. Any known demodulation method can be used as long as it is a demodulation method corresponding to the modulation method used by the television 1.

(2-2-3) Smartphone 2 function (icon display function)
The smartphone 2 has a general browser function. When the smartphone 2 extracts the URL, the smartphone 2 accesses the web page indicated by the extracted URL (that is, the business operator's web page) by a general browser function, and displays the web page on a screen provided in the smartphone 2 itself. On the above-described web page, an icon (hereinafter referred to as “call button”) for making a call to a business operator is displayed. On the call button, as shown in FIG. 1, it may be displayed together with characters “Call us for goods”.

  If the call button is pressed by the consumer after displaying the web page specified by the extracted URL, the smartphone 2 requests the web server 6 to download the transmission program. The above transmission program is a general telephone transmission program having a function of transmitting to the operator terminal 9. The transmission program may be created using a general Intent constructor. When the transmission program is downloaded from the Web server 6, the smartphone 2 activates the transmission program and makes a call to the operator terminal 9.

(2-3) Function of Web Server 6 The Web server 6 stores a file to be displayed as a business operator's web page. The above-described file may be described in a language such as HTML (HyperText Markup Language), and is stored by the operator. In the above-mentioned file, an icon that can be pressed, that is, a call button, is posted together with images and information of products introduced in TV shopping.

  Furthermore, the above-mentioned transmission program is stored in the Web server 6 by the business operator. When requested to download the transmission program, the Web server 6 downloads the above transmission program to the smartphone 2. Note that the Web server 6 may be a server owned by a business provider that provides products.

(2-4) About the mobile phone network 3 and the like The mobile phone network 3, the general public network 7, and the Internet 4 are a general mobile phone network, a general public network, and a general Internet network, respectively. The gateways 5 and 9 are general gateways.

(2-5) About the operator terminal 9 The operator terminal 9 is a general telephone. The company terminal 9 is installed in a call center provided by a company that provides products.

[Description of operation]
FIGS. 3 and 4 are diagrams for explaining the operation of the call system (operation for transmitting and receiving sound waves in a non-audible sound range) in the first embodiment of the present invention. FIG. 5 is a diagram for explaining the operation of the call system (operation when making a call to a provider that provides a product) in the first embodiment of the present invention.

  The operation of the call system according to this embodiment will be described below with reference to FIGS.

  In the call system according to the present embodiment, it is assumed that a broadcast signal of a television shopping program is input to the television 1 from a broadcast station (not shown). Further, it is assumed that the above-mentioned broadcast signal includes the URL of the business operator's web page. The broadcaster includes the above URL in the broadcast signal at the request of the broadcaster.

(1) Operation when transmitting and receiving sound waves in a non-audible sound range First, as shown in the right diagram of FIG. 3, when the television 1 receives a broadcast signal from a broadcast station (not shown), Similarly, a TV shopping program is displayed on the screen together with sound (S1).

  Next, the television 1 extracts a URL from the received broadcast signal (S2).

  Next, the television 1 outputs the URL extracted in S2 as a sound wave in a non-audible sound range (S3).

  Specifically, the television 1 converts the extracted URL (data) into an electrical signal, performs known pulse width modulation on the converted electrical signal, and generates an electrical signal having a frequency of 20 kHz in a non-audible sound range. The television 1 inputs the generated electric signal having a frequency of 20 kHz to a general high-frequency speaker (tweeter) provided therein, and the high-frequency speaker (tweeter) outputs the input electric signal as a sound wave in a non-audible sound range. To do.

  Next, when the smartphone 2 receives a sound wave in a non-audible sound range (hereinafter referred to as “non-audible sound”) output from the high-frequency speaker of the television 1, the smartphone 2 extracts a URL from the received non-audible sound (S4).

  Specifically, the smartphone 2 receives sound with a well-known microphone whose upper limit of frequency characteristics extends to 20 kHz or more, that is, a high-frequency microphone. The sound received by the high-frequency microphone includes not only inaudible sound but also audible sound. In order to extract only the non-audible sound, the treble microphone uses the received sound as an electrical signal and outputs the electrical signal to the bandpass filter. The bandpass filter is a filter that passes only a signal of a non-audible sound in a predetermined frequency band (around 20 kHz). Among the electric signals input from the treble microphone, the electric signal in a non-audible band (of a frequency around 20 kHz). Is output to the smartphone 2 main body. The smartphone 2 performs pulse width demodulation on the non-audible band electrical signal (frequency around 20 kHz) output from the bandpass filter. The smartphone 2 converts the demodulated electrical signal into a corresponding alphanumeric character. Alphanumeric characters corresponding to the electrical signal are set in the smartphone 2 in advance. The smartphone 2 regards the converted alphanumeric character string as a URL.

  Next, when the smartphone 2 extracts the URL, the smartphone 2 accesses the web page indicated by the extracted URL (that is, the web page of the operator) by a general browser function provided in the smartphone 2, and the screen provided in the smartphone 2 itself. To display. (S5).

  The above-described S5 may be specifically realized as the following S51 to S53.

  First, as shown in FIG. 4, the smartphone 2 outputs an HTTP request to the Web server 6 specified by the extracted URL (S51).

  Next, when an HTTP request is input, the Web server 6 returns a file to be stored to the smartphone 2 as an HTTP response (S52).

  Next, when the smartphone 2 receives the HTTP response, the smartphone 2 extracts a file from the HTTP response and displays it on the screen provided to itself as a web page of the business operator (S53).

  As a result of the processing of S51 to S53 described above, the web page of the business in which images and information of products introduced in the program are displayed on the screen of the smartphone 2. In addition, as shown in FIG. 4, an icon for making a call to the operator, that is, a call button is displayed on the displayed web page of the operator. On the call button, it may be displayed together with the characters “Call us about the product here”. The consumer can press the call button on the screen of the smartphone 2 if he / she is interested in TV shopping products.

  In the following, the description will be continued assuming that the consumer has pressed the call button. If the call button is not pressed, the operator's web page is simply displayed on the screen of the smartphone 2. Note that the smartphone 2 may return to the standby screen if the call button is not pressed for a certain period of time. The certain time is set in the smartphone 2 by the consumer.

  In S2 described above, the television 1 may extract the URL from the broadcast signal at regular intervals instead of extracting the URL every time the broadcast signal is received. The fixed interval is set in the television 1 by the manufacturer of the television 1.

(2) Operation when sending to product provider After the above-described S5, when the call button is pressed by the consumer, the smartphone 2 downloads the sending program to the Web server 6 as shown in FIG. Request (S6).

  Specifically, the smartphone 2 outputs a packet requesting download of the transmission program to the Web server 6. The above-described transmission program is a general telephone transmission program having a transmission function to the operator terminal 9 as described in the above-mentioned “(2-2) Function of the smartphone 2”. The above-described transmission program is created using a general Intent constructor, and the telephone number of the operator terminal 9 is designated as the second argument.

  After the above-described S6, when a packet requesting download of the transmission program is input, the Web server 6 downloads the transmission program (stored in itself) to the smartphone 2 (S7).

  Next, when the above transmission program is downloaded, the smartphone 2 activates the program and makes a call to the operator terminal 9. (S8).

  As a result, the consumer who has the smartphone 2 can directly talk with the business operator (here, the operator of the call center) that provides the product, and can communicate the inquiries and purchase intentions about the product.

  Note that the processing of S4 to S6 may be realized by an application that operates on the smartphone 2. In that case, the general consumer holding the smartphone 2 activates the application while viewing a TV shopping program. When the application is activated, it enters a state of waiting for reception of a sound wave in a non-audible sound range. Thereafter, when the application receives a sound wave in a non-audible sound range, the application performs S4 to S6 described above. The application stops its operation after performing S6. The smartphone 2 returns to the standby screen.

(3) Operation when using a radio, etc. (3-1) Operation when using a radio In the above, the TV performs a process of outputting a URL as a sound wave in a non-audible sound range (hereinafter referred to as “output process”). However, the radio may perform the output process described above. In that case, the radio extracts a URL from the broadcast signal of the received radio broadcast, and outputs the extracted URL as a sound wave in a non-audible sound range.

(3-2) Method of Downloading Calling Program Other Than Icon Pressing In the above, the smartphone 2 requested the Web server 6 to download the calling program when the icon was pressed. The Web server 6 may be requested to download a transmission program even when the button is pressed. For example, the smartphone 2 may request the Web server 6 to download a transmission program when a letter “Call us for goods here” on the icon is pressed. In this case, the pressed character is described in hypertext that designates the Web server 6 that stores the transmission program as a link destination. When the hypertext is pressed, the smartphone 2 transmits a packet requesting download of the transmission program to the link destination designated by the hypertext, that is, the Web server 6. When the packet requesting the download of the transmission program is input, the Web server 6 performs the above-described S7 and downloads the transmission program to the smartphone 2.

[Description of effects]
According to the present embodiment, a consumer who watches TV shopping can contact a business operator (call center) that provides a product by simply pressing an icon (without trouble).

  The reason is that the terminal of the call system of the present embodiment displays an icon on the terminal screen for contacting the provider providing the product corresponding to the TV shopping program to be broadcast, and the button is displayed by the consumer. This is because when it is pressed, a call is made to the operator's terminal.

<< Second Embodiment >>
Next, a second embodiment of the present invention will be described.

  The call system of the second embodiment is the same as the call system of the first embodiment until the call button is pressed by the consumer. The call system of the second embodiment is different from the call system of the first embodiment in the operation after the call button is pressed by the consumer. A specific description will be given below.

  First, in the call system of the first embodiment, since the operator terminal 9 is a terminal of the general public network 7, after the call button is pressed by the consumer, the smartphone 2 and the operator terminal 9 pass through the exchange. And make a call. In the call system according to the first embodiment, since a call is made via an exchange, a call charge is charged to a consumer or a business operator (in the case of toll-free) for the amount via the exchange.

  Therefore, in the call system according to the second embodiment, the provider terminal is a terminal of the IP telephone network, and the smartphone (hereinafter referred to as “smart phone 21”) possessed by the provider terminal and the consumer has a call button that is determined by the consumer. After being pressed, communication is performed using a packet. In the call system according to the second embodiment, the operator terminal and the smartphone 21 perform packet communication via general networks such as a mobile phone network, the Internet, and an IP phone network. In each of the above-mentioned networks, a low fixed charge is generally applied to the packet communication fee. Therefore, in the call system of the second embodiment, consumers and businesses have a low fixed charge. You can talk on the phone.

  Further, a general packet (IP packet) is used in the above-described mobile phone network and the Internet, and a message and an RTP packet defined by SIP (Session Initiation Protocol) are used in the IP phone network. RTP is an abbreviation for Real-Time Transport Protocol. Therefore, the call system according to the second embodiment includes a gateway that converts a general packet into a message or RTP packet defined by SIP. The above gateway is hereinafter referred to as “WebRTC gateway 23”.

  Furthermore, in the call system according to the second embodiment, when the smartphone 21 performs packet communication with the provider terminal, the smartphone 21 considers an IP address of an arbitrary number (hereinafter referred to as “temporary ID”) as its own IP address and performs packet communication. Communicate. This is to prevent the real IP address of the smartphone 21 from being specified by the business operator. Since the IP address of the smart phone 21 that the user owns, that is, the transmission source is not specified, the consumer can make a call to the operator (call center) more easily. Since the consumer makes a call easily, the business operator can have more opportunities to talk with the consumer, and can have more sales promotion opportunities. The smartphone 21 requests a temporary ID from the WebRTC gateway 23, and the WebRTC gateway 23 is assigned a temporary ID to the smartphone 21.

  Details of the configuration, function, and operation of the call system according to the second embodiment will be described below.

[Description of configuration]
(1) Configuration of Call System of Second Embodiment FIG. 6 is a diagram illustrating a configuration example of a call system according to the second embodiment of the present invention.

  As shown in FIG. 6, the call system according to the present embodiment includes a television 1, a smartphone 21, a mobile phone network 3, the Internet 4, a gateway 5, and a Web server 6. The call system according to this embodiment includes an IP telephone network 22, a WebRTC gateway 23, a SIP server 24, and an operator terminal 25. The mobile phone network 3 includes a smartphone 21. The IP telephone network 22 includes a SIP server 24 and a provider terminal 25. The Internet 4 is connected to the IP telephone network 22 via the WebRTC gateway 23.

(2) Functions of respective parts constituting the telephone system in the second embodiment of the present invention (2-1) Functions of the smartphone 21 main body (2-1-1) Functions for acquiring a temporary ID (functions of the smartphone 21 main body )
The smartphone 21 is a terminal owned by a consumer. After the call button is pressed and the transmission program is downloaded, the smartphone 21 transmits a packet requesting a temporary ID (hereinafter referred to as “payout request packet”) to the WebRTC gateway 23. The temporary ID is a temporary IP address that prevents the IP address of the smartphone 21 from being specified. When receiving the response packet for the payout request packet from the WebRTC gateway 23, the smartphone 21 extracts the temporary ID from the response packet and stores it as its own IP address. After storing the temporary ID, the smartphone 21 activates the downloaded transmission program. The stored temporary ID is used when transmitting / receiving voice packets. The function related to transmission / reception of voice packets will be described in “(2-1-3) Function for performing packet communication” described later.

  In addition, as will be described later in “(2-2) Function of a transmission program that operates on the smartphone 21”, the activated transmission program is communicated with the operator terminal 25 before performing communication using a packet. Establish a session with. Then, after the session is established, a packet notifying the establishment of the session is transmitted from the WebRTC gateway 23 to the smartphone 21 main body.

(2-1-2) Function for establishing a session (function of the smartphone 21 main body)
When the smartphone 21 receives a packet notifying the establishment of a session from the WebRTC gateway 23, the smartphone 21 notifies the consumer that the telephone is ready. The smartphone 21 may notify the consumer that a call is ready by sounding or stopping the sound.

(2-1-3) Function for performing packet communication (function of smartphone 21 main body)
The smartphone 21 receives a voice (sound) from a consumer who knows that the phone is ready to talk. When a voice (sound) is input from a consumer, the smartphone 21 converts the input sound into an IP packet (hereinafter referred to as “voice packet”) using a general encoding method, and is sent to the WebRTC gateway 23. Send to. When transmitting the voice packet to the WebRTC gateway 23, the smartphone 21 sets the transmission source IP address (in the IP header portion) of the voice packet as a temporary ID. This is to prevent the sender from being specified. When a voice packet addressed to itself (input IP address is a temporary ID) is input, the smartphone 21 reproduces the voice from the input voice packet using a general decoding method, and outputs it from a speaker included in the smartphone 21. To do.

(2-2) Function of Calling Program that Operates on Smartphone 21 The calling program of the smartphone 21 includes a SIP-URI (Uniform Resource Identifier). Hereinafter, the description will be continued assuming that the manufacturer of the calling program includes the telephone number of the operator terminal 25 as a SIP-URI in the calling program.

  When the transmission program of the smartphone 21 is activated, it transmits a packet requesting session establishment (hereinafter referred to as “session establishment request packet”) to the WebRTC gateway 23. This is for establishing a session with the operator terminal 25. In addition, the transmission program of the smart phone 21 transmits the SIP-URI (telephone number of the operator terminal 25) included in the smartphone 21 in the above-described session establishment request packet.

(2-3) IP Phone Network 22 The IP phone network 22 is a general IP phone network.

(2-4) Function of WebRTC Gateway 23 (2-4-1) Function of Paying Temporary ID (Function of WebRTC Gateway 23)
When the WebRTC gateway 23 receives the above-described payout request packet from the smartphone 21, the WebRTC gateway 23 arbitrarily selects one temporary ID from among the temporary IDs set in advance in itself. The administrator of the call system according to the present embodiment previously sets an IP address that is not used by each device of the call system according to the present embodiment in the WebRTC gateway 23 as a temporary ID. When selecting the temporary ID, the WebRTC gateway 23 includes the selected temporary ID in a response packet to the payout request packet and transmits it to the smartphone 21.

  The WebRTC gateway 23 is managed by an administrator of the communication system according to the present embodiment. The WebRTC gateway 23 is not managed by the business operator.

(2-4-2) Function for establishing session with service provider terminal 25 (function of WebRTC gateway 23)
In addition, when the WebRTC gateway 23 receives the above-described session establishment request packet from the transmission program of the smartphone 21, the WebRTC gateway 23 extracts the SIP-URI (that is, the telephone number of the operator terminal 25) from the session establishment request packet. The WebRTC gateway 23 creates an INVITE request with the extracted SIP-URI as the destination URI, transmits the request to the operator terminal 25, and establishes a session with the operator terminal 25 indicated by the SIP-URI according to the well-known SIP. Establish. When a session is established with the provider terminal 25, the WebRTC gateway 23 transmits a packet notifying the establishment of the session to the smartphone 21. The WebRTC gateway 23 receives a well-known 200 OK message from the operator terminal 25 in the session establishment process.

(2-4-3) Function for transmitting packets (function of WebRTC gateway 23)
When the WebRTC gateway 23 receives a voice packet from the smartphone 21 (after the session is established), the WebRTC gateway 23 converts the voice packet into an RTP packet and transmits the RTP packet to the provider terminal 25. The WebRTC gateway 23 extracts the source IP address (that is, the temporary ID) from the voice packet received from the smartphone 21 and stores it.

  In addition, when receiving the RTP packet from the provider terminal 25, the WebRTC gateway 23 converts the RTP packet into a general voice packet and transmits it to the smartphone 21. At this time, the WebRTC gateway 23 transmits the destination IP address (in the IP header portion) of the voice packet to be transmitted after setting the stored temporary ID.

(2-5) About the SIP Server 24 The SIP server 24 is a general SIP server. That is, the SIP server 24 extracts the SIP-URI from the input INVITE request, and transmits the input INVITE request to the device (the operator terminal 25) corresponding to the extracted SIP-URI.

(2-6) Function of business operator terminal 25 The business operator terminal 25 is installed in a call center of a business operator who provides products. The provider terminal 25 is a general IP telephone that performs communication using SIP. That is, when a general INVITE request is input, the business entity terminal 25 establishes a session with the WebRTC gateway 23 that has output the INVITE request based on a well-known session establishment procedure based on SIP specified in RFC3261. I do. RFC is an abbreviation for Request for Comments.

  Further, when the RTP packet addressed to itself is input, the business entity terminal 25 reproduces sound from the RTP packet by using a general decoding method and outputs it from a speaker provided in itself. Further, when the voice is input to the microphone provided in the service provider terminal 25, the provider terminal 25 converts the voice into an RTP packet using a general encoding method, and transmits the converted RTP packet to the WebRTC gateway 23. .

(2-7) About Web Server 6 In the Web server 6, a transmission program is stored by a business operator. The business operator includes the SIP-URI (the telephone number of the business operator terminal 25) in the outgoing program.

  Since configurations and functions other than those described above are the same as those of the call system to which the wireless communication terminal according to the first embodiment is applied, the same reference numerals are given and description thereof is omitted.

[Description of operation]
The smartphone 21 and the provider terminal 25 perform packet communication after establishing a session. The packet for communication is obtained by converting voices of consumers and operators (call center operators) into packets.

  The operation for establishing a session will be described in the following “(1) Operation for establishing a session” with reference to FIG. FIG. 7 is a diagram for explaining the operation (operation for establishing a session) of the call system in the second exemplary embodiment of the present invention. The operation when actually performing packet communication will be described in the following “(2) Operation when making a call” with reference to FIG. FIG. 8 is a diagram for explaining the operation (operation when performing packet communication) of the call system according to the second embodiment of the present invention.

(1) Operation for Establishing Session (1-1) Downloading Transmission Program First, the smartphone 21 performs the above-described S1 to S6 as a pre-stage for establishing a session, and downloads the transmission program to the Web server 6. (S1 to S6).

  Next, the Web server 6 performs S7 described above, and downloads the transmission program to the smartphone 21 (S7).

(1-2) Operation for Acquiring Temporary ID After the above-described S7, when the outgoing program is downloaded from the Web server 6, the smartphone 21 requests a packet (i.e., a temporary ID) as shown in FIG. (Payout request packet) is transmitted to the WebRTC gateway 23 (S100).

  The above-described S100 and the following S101 to S103 are processes for the smartphone 21 to acquire a temporary ID.

  Next, after the above-described S100, when the WebRTC gateway 23 receives the payout request packet, the WebRTC gateway 23 arbitrarily selects one temporary ID from among the temporary IDs set in advance (S101).

  Next, the WebRTC gateway 23 includes the selected temporary ID in a response packet to the payout request packet and transmits it to the smartphone 21 (S102).

  Next, when receiving the response packet, the smartphone 21 extracts the temporary ID from the response packet and stores it as its own IP address (S103).

(1-3) Operation for Establishing Session Next, after the above-described S103, the smartphone 21 activates the transmission program downloaded in the above-described S7 (S104).

  Next, after the above-described S104, when the calling program of the smartphone 21 is activated, it transmits a session establishment request packet to the WebRTC gateway 23 (S105).

  This is for establishing a session with the operator terminal 25.

  In S105 described above, the transmission program of the smartphone 21 transmits the transmission source IP address (in the IP header portion) of the session establishment request packet after setting it as a temporary ID, as shown in the balloon part 1 of FIG. . In addition, the transmission program of the smartphone 21 transmits the destination IP address (in the IP header portion) of the session establishment request packet as the IP address of the WebRTC gateway 23 in S105 described above. It is assumed that the IP address of the WebRTC gateway 23 is set in advance in the transmission program. Further, in S105 described above, the transmission program of the smartphone 21 transmits the SIP-URI (telephone number of the operator terminal 25) included in the smartphone 21 after being included in the above-described session establishment request packet. The SIP-URI is used for the WebRTC gateway 23 to establish a session with the operator terminal 25 in S107 described later.

  Hereinafter, the source / destination IP address (in the IP header part) of the transmitted packet or the like may be described. 7 and 8 will be described. These are descriptions for explaining that the provider cannot specify the transmission source by the temporary ID in “(2-3) Identification of transmission source” described later.

  Next, after the above-described S105, when receiving the session establishment request packet from the smartphone 21, the WebRTC gateway 23 extracts the SIP-URI (that is, the telephone number of the operator terminal 25) from the received session establishment request packet ( S106).

  Next, the WebRTC gateway 23 creates an INVITE request with the SIP-URI extracted in S106 described above as the destination URI, and transmits it to the SIP server 24 (S107).

  The WebRTC gateway 23 transmits the destination address (in the IP header part) of the INVITE request as the IP address of the SIP server 24 as shown in the balloon part 2 in FIG. The WebRTC gateway 23 transmits the source IP address (in the IP header part) of the INVITE request as its own IP address. The IP addresses of the WebRTC gateway 23 and the SIP server 24 are previously set in the WebRTC gateway 23 by the administrator of the call system according to the present embodiment.

  After the above-described S107, when the SIP server 24 receives the INVITE request, the SIP server 24 extracts the destination URI from the received message and sends the INVITE request to the operator terminal 25 corresponding to the extracted destination URI, as in the case of a general SIP server. Transfer (S108).

  Next, upon receiving the INVITE request from the SIP server 24, the business entity terminal 25 establishes a session with the WebRTC gateway 23 based on a well-known session establishment procedure based on SIP defined in RFC3261 (S109).

  Next, when a session is established with the provider terminal 25, the WebRTC gateway 23 transmits a packet informing the establishment of the session (hereinafter referred to as “session establishment packet”) to the smartphone 21 (S110).

  Specifically, the WebRTC gateway 23 transmits a session establishment packet to the smartphone 21 when a known 200 OK message is received from the business entity terminal 25 in accordance with the above-described known session establishment procedure.

  The above is the operation for establishing a session between the smartphone 21 and the operator terminal 25.

  Note that after S110 described above, the WebRTC gateway 23 extracts the transmission source IP address (that is, the IP address of the provider terminal 25) from the IP header portion of the 200OK message described above, and stores it in association with the temporary ID of the smartphone 21. (S111).

  This is because the WebRTC gateway 23 can transmit the voice packet input from the smartphone 21 to the business entity terminal 25 in S203 described later. This is because the WebRTC gateway 23 can transmit the packet input from the operator terminal 25 to the smartphone 21 in S212 described later.

(1-4) NAT (Network Address Translation) Processing When the SIP server 24 or the operator terminal 25 performs packet communication using the local IP address in the IP telephone network 5, the WebRTC gateway 23 performs the following in S106: In addition, general NAT processing may be performed.

  First, when receiving a session establishment request packet from the smartphone 21 in S106 described above, the WebRTC gateway 23 extracts a destination IP address (IP address of the WebRTC gateway 23) from the received session establishment request packet. Since the extracted destination IP address is a global IP address, the WebRTC gateway 23 converts the destination IP address into a predetermined local IP address. At this time, the WebRTC gateway 23 converts the global IP address into a local IP address using the NAT table. The NAT table is a table in which a global IP address and a local IP address are associated with each other, and is set in the WebRTC gateway 23 in advance by the administrator of the call system according to the present embodiment. Further, the WebRTC gateway 23 converts the IP address of the SIP server 24 set in advance into a local IP address using the NAT table.

  Next, the WebRTC gateway 23 creates an INVITE request in S107 described above, and sets the source IP address (in the IP header part) of the created INVITE request as the converted local IP address (of the WebRTC gateway 23). Further, the WebRTC gateway 23 sets the destination address (in the IP header part) of the created INVITE request as the local IP address of the SIP server 24.

(2) Operation when making a call (2-1) Call from consumer to business operator After the above-described S110, the smartphone 21 receives a session establishment packet from the WebRTC gateway 23 as shown in FIG. Therefore, it is considered that the session has been established, and the consumer holding it is notified that the telephone is ready (S200).

  For example, the smartphone 21 may sound a ringing tone “pu, pu, pu” after transmitting the payout request packet in S100. In that case, by stopping the ringing tone (after receiving the session establishment packet), The consumer may be notified that the call is ready.

  Next, although not shown in the figure, after the above-described S200, the consumer who knows that he / she can talk is started and the voice is input to the microphone of the smartphone 21.

  When the consumer's voice (voice) is input to the microphone, the smartphone 21 converts the input voice into an electrical signal as shown in FIG. The electric signal is converted into digital data (S201).

  Next, the smartphone 21 attaches an IP header to the converted digital data, and transmits it to the WebRTC gateway 23 as a general IP packet (hereinafter referred to as “voice packet”) (S202).

  In S202 described above, as shown in the balloon portion 1 in FIG. 8, the smartphone 21 stores the source IP address (in the IP header portion) of the voice packet to be transmitted (the temporary ID of the smartphone 21 (stored in S103 described above)). ) And then send. This is to prevent the provider from knowing the IP address of the smartphone 21 as the transmission source. Further, in S202 described above, the smartphone 21 transmits the voice packet after setting the destination IP address (in the IP header portion) of the voice packet as the IP address of the WebRTC gateway 23, as shown in the balloon part 1 of FIG. As described in S105 above, the IP address of the WebRTC gateway 23 is set in advance in the transmission program. The smartphone 21 may extract the IP address of the WebRTC gateway 23 as the destination IP address from the stored transmission program.

  Next, after the above-described S202, when the WebRTC gateway 23 receives the voice packet transmitted from the smartphone 21, the WebRTC gateway 23 converts the voice packet into an RTP packet and transmits it to the business entity terminal 25 (S203).

  Specifically, the WebRTC gateway 23 extracts digital data and a transmission source IP address (temporary ID) from the received voice packet. Next, the WebRTC gateway 23 reads the IP address (stored in S111 described above) of the business entity terminal 25 stored in association with the transmission source IP address (temporary ID). Next, the WebRTC gateway 23 adds an RTP header, a UDP header, and an IP header to the extracted data and generates an RTP packet. Further, the WebRTC gateway 23 uses the destination IP address of the IP header portion of the generated RTP packet as the IP address of the carrier terminal 25 that has been read, as shown in the balloon part 2 of FIG. This is because the RTP packet to be transmitted is a packet addressed to the operator terminal 25. The WebRTC gateway 23 sets the source IP address in the IP header part of the RTP packet as the obtained IP address. The WebRTC gateway 23 transmits the generated RTP packet to the carrier terminal 25.

  Next, after the above-described S203, when the provider terminal 25 receives the RTP packet addressed to itself, the provider terminal 25 extracts digital data from the received RTP packet in the same way as a general SIP terminal, and uses a general decoding method to perform audio Are output from the speakers provided in the device (S204).

  As a result of the execution of S204 described above, the operator of the call center established by the business operator can hear the voice of the consumer.

  Note that after the above S204, the operator terminal 25 extracts the source IP address (in the IP header portion), that is, the WebRTC gateway 23 from the input RTP packet, and stores it (S205).

  The above-described S205 is processing for enabling generation of a packet addressed to the WebRTC gateway 23 in S211, which will be described later. The stored transmission source IP address is used as a destination IP address in S211 described later.

(2-2) Call from operator to consumer Although not shown after the above S204, the call center operator responds to and responds to the consumer's voice output from the speaker. Is input to the microphone provided in the operator terminal 25.

  When the sound is input to the microphone provided in the business terminal 25, the business terminal 25 converts the sound into an electric signal, and further converts it into digital data by a general encoding method (S210).

  Next, the provider terminal 25 generates an RTP packet by adding an RTP header, a UDP header, and an IP header to the converted digital data, and transmits the generated RTP packet to the WebRTC gateway 23 (S211).

  Specifically, the provider terminal 25 sets the destination IP address (in the IP header portion) of the generated RTP packet as the IP address of the WebRTC gateway 23 (stored in S205 above) and transmits it to the WebRTC gateway 23. In addition, the provider terminal 25 uses its own IP address for the source IP address (in the IP header portion) of the RTP packet to be transmitted.

  Next, when receiving the RTP packet addressed to itself, the WebRTC gateway 23 converts the RTP packet into a general voice packet, and transmits the converted voice packet to the smartphone 21 (S212).

  Specifically, when receiving the RTP packet addressed to itself, the WebRTC gateway 23 extracts the digital data and the transmission source IP address (IP address of the operator terminal 25) from the received RTP packet. Next, the WebRTC gateway 23 reads the temporary ID (stored in S111 described above) of the smartphone 21 stored in association with the extracted IP address of the provider terminal 25. The WebRTC gateway 23 generates a general voice packet by adding an IP header to the extracted data. However, the WebRTC gateway 23 sets the destination IP address in the IP header portion as the read temporary ID. This is because the voice packet to be transmitted is addressed to the smartphone 21.

  Next, when the voice packet addressed to itself is input in S212 described above, the smartphone 21 extracts digital data from the input voice packet, reproduces the voice using a general decoding method, and is provided in itself. Output from the speaker (S213).

  Through the process of S213 described above, the consumer can listen to the voice from the operator of the call center, that is, the reply or answer.

  Through the processes of S200 to S205 and S210 to S213 described above, the user of the smartphone 21 can talk with the user of the business terminal 25 (call center operator) via a packet.

(2-3) Identification of transmission source The business operator cannot specify the terminal of the transmission source. This is because the smartphone 21 uses the temporary ID as its own IP address in the call system of the present embodiment.

  For example, it is assumed that the operator monitors the RTP packet (output in S203) input to the operator terminal 25 held by the operator. However, the RTP packet is a packet whose source IP address is the WebRTC gateway 23, as shown in the balloon part 2 of FIG. The business operator only knows the WebRTC gateway 23 as the communication destination.

  Furthermore, it is assumed that the operator monitors a voice packet (output in S202) input to the WebRTC gateway 23. However, the voice packet is a packet with a temporary ID (selected arbitrarily in S101 described above) as shown in the balloon part 1 in FIG. Since the business operator does not know what the device corresponding to the temporary ID is, it cannot specify the transmission source device.

  Furthermore, it is assumed that the provider monitors the above-described session establishment request packet and INVITE request. The session establishment request packet and the INVITE request are packets whose source IP address is the temporary ID or the WebRTC gateway 23, as shown in the balloons 1 and 2 in FIG. The business operator cannot specify the transmission source.

  Since the business operator cannot specify the smartphone 21 as the transmission source, the consumer can easily call the business operator.

(2-4) Coding method The coding method and decoding method (hereinafter referred to as “method 1”) used by the smartphone 21 in the above-described S201 and S213, and the coding used by the operator terminal 25 in the above-described S210 and S204. The method and the decoding method (hereinafter referred to as “method 2”) may be different. For example, the smartphone 21 may perform encoding and decoding using AMR (Adaptive Multi Rate), and the operator terminal 25 may perform encoding and decoding using G.711. This is because the same encoding method and decoding method are not always used in the mobile phone network to which the smartphone 21 belongs and the IP phone network to which the business terminal 25 belongs.

  Even in the above-described case, the WebRTC gateway 23 can perform the following processing in S203 and S212 described above so that the smartphone 21 and the operator terminal can reproduce the sound.

  First, in S203 described above, the WebRTC gateway 23 removes the IP header from the voice packet, extracts digital data (data encoded by the method 1), decodes the extracted digital data by the method 1 decoding method, Encoding is performed by the encoding method of method 2. Then, the WebRTC gateway 23 adds an RTP header or the like to the encoded data, generates an RTP packet, and transmits it to the carrier terminal 25.

  In S212 described above, the WebRTC gateway 23 decodes the extracted digital data (data encoded by the method 2) using the method 2 decoding method, and then encodes it using the method 1 encoding method. . Next, the WebRTC gateway 23 adds an IP header to the encoded data, generates a general voice packet, and transmits it to the smartphone 21.

(2-5) NAT processing When the SIP server 24 or the carrier terminal 25 performs packet communication using a local IP address, the WebRTC gateway 23 may perform general NAT processing.

  Specifically, the WebRTC gateway 23 converts the IP address (global IP address) included in the IP header portion of the RTP packet generated in S202 described above into a local IP address. At this time, the WebRTC gateway 23 performs conversion using the NAT table in which the global IP address and the local IP address are associated with each other.

  Further, the WebRTC gateway 23 converts the IP address (local IP address) included in the IP header portion of the general packet generated in S212 described above into a global IP address using the NAT table.

(2-6) Embodiment using WiFi (Wireless Fidelity) Standard In the above, the smartphone 21 and the operator terminal 25 perform packet communication via the mobile phone network 3. The smartphone 21 and the operator terminal 25 may perform packet communication via a wireless LAN (Local Area Network) instead of the mobile phone network 3. In that case, the smartphone 21 may transmit a packet using the WiFi (Wireless Fidelity) standard.

  Since other operations are the same as those in the first embodiment, detailed description thereof is omitted.

  In the call systems according to the first and second embodiments, the terminal held by the consumer is described as a smartphone, but the terminal held by the consumer may be a future phone. However, a future phone shall be provided with the function demonstrated by the above-mentioned "(2-2) The function of the smart phone 2."

(2-7) Call system using frequency of 17 kHz to 20 kHz (2-7-1) General description In the call system of the first and second embodiments, the television 1 is a sound wave in a non-audible sound range, that is, 20 kHz or more. URL was notified to the smart phones 2 and 21 using the sound wave of the frequency. As described above in S3 and S4.

  The television 1 uses a sound wave having a frequency near the upper limit of the audible sound range (specifically, a sound wave having a frequency of 17 kHz to 20 kHz, hereinafter referred to as “a sound wave near the upper limit of the audible sound range”) instead of the sound wave in the non-audible sound range. The smartphone 2 or 21 may be notified of the URL. A speaker capable of outputting sound waves in the vicinity of the upper limit of the audible sound range and a microphone capable of receiving the sound waves may be provided in a general smartphone. Therefore, by using the speaker and the microphone, it is relatively inexpensive to use the embodiment. There is a possibility that a communication system can be constructed.

  The above-mentioned “speaker capable of outputting sound waves in the vicinity of the upper limit of the audible sound range” is hereinafter referred to as “a speaker corresponding to the upper limit of the audible sound range”. In addition, a microphone that can receive a sound wave in the vicinity of the upper limit of the audible sound range is hereinafter referred to as an “audible sound range upper limit compatible microphone”.

(2-7-2) Specific operation description When using the sound wave in the vicinity of the upper limit of the audible sound range, the TV 1 and the smartphones 2 and 21 perform the following processes of S63 and S64 instead of S3 and 4 described above. Can do.

  First, the television 1 outputs the URL extracted in S2 as a sound wave near the upper limit of the audible sound range (S63).

  Specifically, the television 1 converts the extracted URL (data) into an electrical signal, performs known pulse width modulation on the converted electrical signal, and generates an electrical signal with a frequency of 17 kHz. The television 1 inputs the generated electrical signal with a frequency of 17 kHz to an audible range upper limit speaker provided therein, and the audible range upper limit speaker outputs the input electrical signal as a sound wave with a frequency of 17 kHz. In addition, although the television 1 produced | generated the electrical signal of frequency 17kHz, as long as it is a frequency in 17kHz-20kHz, you may produce | generate an electrical signal.

  Next, when the smartphones 2 and 21 receive sound waves near the upper limit of the audible sound range output from the speaker of the television 1 (that is, sound waves having a frequency of 17 kHz), the smartphones 2 and 21 extract URLs from the received sound waves (S64).

Specifically, the smartphones 2 and 21 receive sound with an audible sound range upper limit compatible microphone. The audible sound range upper limit compatible microphone converts the received sound into an electric signal and outputs the converted electric signal to the bandpass filter in order to cut the sound having a frequency other than 17 kHz. The band-pass filter is a filter that allows only a signal in the frequency band (around 17 kHz) to pass, and outputs an electrical signal (in the vicinity of frequency 17 kHz) to the smartphones 2 and 21 among the electrical signals input from the microphone.
The smartphones 2 and 21 perform pulse width demodulation on the electrical signal (frequency around 17 kHz) output from the bandpass filter. The smartphones 2 and 21 convert the demodulated electrical signals into corresponding alphanumeric characters. Alphanumeric characters corresponding to the electrical signal are set in the smartphones 2 and 21 in advance. The smartphones 2 and 21 regard the converted alphanumeric character string as a URL. The frequency of the band pass filter may be changed so that the electric signal generated by the television 1 in S63 described above can be extracted.

  The above is an operation example in the case of using a sound wave near the upper limit of the audible sound range, that is, a sound wave having a frequency of 17 kHz to 20 kHz. Since sound waves with a frequency of 17 kHz to 20 kHz may be heard by a person with good hearing, the above-described call system using a frequency of 17 kHz to 20 kHz is installed in a place where a loud sound of 17 kHz or less sounds, such as a concert venue. May be.

(2-8) Call system using frequency of low-side non-audible sound (2-8-1) Schematic description In the call system of the first and second embodiments, the sound wave in the non-audible sound range has a frequency of 20 kHz or higher. However, a sound wave having a frequency of 20 Hz or less is also a sound wave in a non-audible sound range.

  The telephone system of the first and second embodiments can use sound waves in a non-audible sound range with a frequency of 20 Hz or less. That is, the television 1 can notify the smartphones 2 and 21 of the URL using sound waves having a frequency of 20 Hz or less. For this purpose, the television 1 includes a known heavy bass speaker whose lower limit of the reproduction frequency characteristic is 20 kHz or less. The smartphones 2 and 21 include known microphones whose lower limit of frequency characteristics extends to 20 Hz or less.

(2-8-2) Specific operation description When using a sound wave having a frequency of 20 Hz or less, the television 1 and the smartphones 2 and 21 perform the following processes of S73 and S74 instead of the above-described S3 and 4.

  First, the television 1 outputs the URL extracted in S2 as a sound wave having a frequency of 20 Hz or less (S73).

  Specifically, the television 1 converts the extracted URL (data) into an electrical signal, performs known pulse width modulation on the converted electrical signal, and generates an electrical signal with a frequency of 15 Hz. The television 1 inputs the generated electric signal with a frequency of 15 Hz to a known heavy bass speaker provided therein, and the heavy bass speaker outputs the input electric signal as a sound wave with a frequency of 15 Hz. Note that the television 1 generates an electrical signal having a frequency of 15 Hz, but any frequency may be used as long as the frequency is 20 kHz or less corresponding to the heavy bass speaker.

  Next, when the smartphone 2 or 21 receives a sound wave having a frequency of 20 Hz or less (a sound wave having a frequency of 15 Hz) output from the speaker of the television 1, the URL is extracted from the received sound wave (S74).

Specifically, the smartphones 2 and 21 receive sound with a known microphone in which the lower limit of the frequency characteristic extends to 20 Hz or less (here, 15 Hz or less). The microphone described above converts the received sound into an electrical signal, and outputs the converted electrical signal to a bandpass filter in order to cut the sound with a frequency other than 15 Hz. The band pass filter is a filter that allows only a signal in the frequency band (around 15 Hz) to pass through, and outputs an electrical signal (in the vicinity of frequency 15 Hz) to the smartphones 2 and 21 among the electrical signals input from the microphone.
The smartphones 2 and 21 perform pulse width demodulation on the electric signal (frequency around 15 Hz) output from the bandpass filter. The smartphones 2 and 21 convert the demodulated electrical signals into corresponding alphanumeric characters. Alphanumeric characters corresponding to the electrical signal are set in the smartphones 2 and 21 in advance. The smartphones 2 and 21 regard the converted alphanumeric character string as a URL.

  The above is an example of operation when sound waves having a frequency of 20 Hz or less are used.

  A person cannot hear a sound with a frequency of 20 Hz or less, but feels it as a vibration. For this reason, it is desirable that a telephone system using a frequency of 20 Hz or less be installed in a room where measures against vibration are taken so that vibration is not transmitted to the outside. For example, a telephone system using a frequency of 20 Hz or less is desirably installed in a room where soundproof carpets are laid throughout the room.

(2-9) Call system that notifies URL using method other than sound In the above, the television 1 notifies the smartphones 2 and 21 of the URL using a sound wave in a non-audible sound range or a sound wave near the upper limit of the audible sound range. However, you may notify using a radio wave and infrared rays instead of a sound. In that case, the television 1 includes a general wireless transmitter or an infrared transmitter, and transmits a URL as a radio wave or infrared from the transmitter. On the other hand, the smartphones 2 and 21 include general infrared receivers or wireless receivers, receive infrared rays and radio waves with these receivers, and extract URLs from the received radio waves and infrared rays.

  The wireless transmitter and the wireless receiver described above may be devices that transmit and receive wireless radio waves in accordance with the Bluetooth (registered trademark) standard. Further, the infrared transmitter and the infrared receiver may be devices that transmit and receive infrared rays in accordance with, for example, IrDA (Infrared Data Association) standards.

[Description of effects]
First, in the call system according to the present embodiment, as with the call system according to the first embodiment, a consumer who views TV shopping should contact a provider (call center) that provides a product without taking time and effort. Can do. This is because the call system according to the present embodiment displays an icon for contacting the business operator (similar to the call system according to the first embodiment) on the terminal screen, and when the button is pressed by the consumer, the smartphone This is because it communicates with the operator terminal.

  In addition to the effects described above, the call system according to the present embodiment also has the following effects.

  First, in the call system according to the present embodiment, a consumer and an operator can make a call with a low fixed fee.

  This is because the call system according to the present embodiment includes an IP telephone network and a mobile phone network that perform packet communication at a low fixed charge, and the smartphone and the operator terminal communicate using packets on each of the networks described above. It is.

  Furthermore, in the call system according to the present embodiment, the consumer can make a call with the provider that provides the product without disclosing the IP address of the smartphone that the consumer has (to the provider that provides the product).

  This is because when the smartphone 21 of the call system according to the present embodiment performs packet communication with the operator terminal 25, the IP address of an arbitrary number, that is, the temporary ID is regarded as its own IP address, and packet communication is performed. is there. Since the IP address of the smartphone 21 is not disclosed, that is, the source is not specified, the consumer can make a phone call to the operator more easily.

<< Third Embodiment >>
Next, a third embodiment of the present invention will be described.

[Description of configuration]
FIG. 9 is a diagram illustrating a configuration example of a call system according to the third embodiment of the present invention.

  The call system in the third embodiment includes a terminal 100. The terminal 100 is a terminal held by a general consumer.

  A predetermined wave propagating in the space is input to the terminal 100 corresponding to a broadcast of a predetermined program introducing a product or a predetermined advertisement broadcast promoting the product.

  The predetermined wave described above may be a sound wave in a non-audible sound range. The predetermined wave includes a predetermined resource specifier. The predetermined resource specifier may be a URL of a web page of an operator handling the above-described product.

  When the above-described predetermined wave is input, the terminal 100 accesses a web page specified by a predetermined resource specifier extracted from the predetermined wave and displays the web page on a screen provided in itself. Here, a predetermined symbol is arranged on the displayed web page.

  When a predetermined symbol arranged on the web page is pressed, the terminal 100 makes a call to a predetermined terminal of the business operator handling the above-described product, that is, the business operator terminal.

  The predetermined program may be a TV shopping program. The company terminal may be a terminal installed in a call center established by a company that provides products. Moreover, the above-mentioned symbol may be an icon or a character.

[Description of operation]
In the following, it is assumed that the television is displaying a predetermined program to be broadcast and outputting a predetermined wave including a predetermined resource specifier to the propagation space when the TV is displaying.

  The predetermined wave is a sound wave in a non-audible sound range. The predetermined program is a program introducing products such as a television shopping program. The predetermined resource specifier described above is the URL of the web page of the business that handles the product introduced in the program. It is assumed that the general consumer is watching a predetermined program displayed on the television.

  A predetermined wave propagating in the space is input to the terminal 100 in correspondence with broadcasting of a predetermined program (for example, a television shopping program).

  When a predetermined wave is input, the terminal 100 accesses a web page specified by a predetermined resource specifier extracted from the predetermined wave and displays the web page on a screen provided in the terminal 100. Here, a predetermined symbol is arranged on the displayed web page.

  Next, when a predetermined symbol placed on the web page is pressed by a general consumer, the terminal 100 makes a call to a predetermined terminal of the business operator that handles the above-described product, that is, the business operator terminal. That is, the terminal 100 outputs a known signal for making a connection to a predetermined operator terminal. The operator terminal may be a call center terminal established by the operator.

  A general consumer who views TV shopping can contact an operator (call center) that provides a product by simply pressing a predetermined symbol.

  The terminal 100 may be a smartphone or a future phone, and may be an STB (Set Top Box) as long as it has a well-known telephone function.

  In the above description, the television outputs a predetermined wave corresponding to a broadcast of a predetermined program. However, the television may output a predetermined wave corresponding to a predetermined advertisement broadcast, that is, a commercial. In that case, the terminal 100 receives a predetermined wave corresponding to the commercial. The terminal 100 accesses a web page specified by a predetermined resource specifier extracted from a predetermined wave, and displays the web page on a screen provided to itself. When a predetermined symbol arranged on the web page is pressed, the terminal 100 makes a call to a predetermined terminal of the business operator handling the above-described product, that is, the business operator terminal.

  Furthermore, in the above description, the television outputs a predetermined wave, but the operation may be performed by a radio. Specifically, the radio extracts a predetermined resource specifier from the broadcast signal of the received radio broadcast, and outputs the extracted predetermined resource specifier as a sound wave in a non-audible sound range. Television and radio are broadcast receivers.

[Description of effects]
According to the present embodiment, a consumer who views a predetermined program can contact a provider (call center) that provides a product simply by pressing a symbol (without taking time).

  The reason is that the terminal of the call system of the present embodiment displays a symbol (for example, an icon) for contacting a provider who provides a product corresponding to a predetermined program to be broadcast on the terminal screen, and the symbol This is because when the user presses the button, the call is sent to the operator's terminal.

  The embodiment described above is not limited to the embodiment, and various modifications can be made without departing from the scope of the invention in the implementation stage.

Furthermore, a part or all of each of the above embodiments can be described as in the following supplementary notes, but is not limited thereto.
(Appendix 1)
When a predetermined wave propagating in space is input corresponding to a broadcast of a predetermined program introducing a product or a predetermined advertisement broadcast promoting the product, a predetermined resource specifier extracted from the predetermined wave The web page specified by the above is displayed and the web page is displayed on a screen provided to the web page, and when a predetermined symbol arranged on the web page is pressed, a predetermined terminal of a company that handles the product, That is, make a call to the operator terminal,
A terminal characterized by that.
(Appendix 2)
The predetermined wave is a non-audible sound wave having a frequency of 20 kHz or higher.
The terminal according to supplementary note 1, wherein:
(Appendix 3)
Equipped with a terminal and a broadcast receiver,
The terminal is the terminal according to any one of appendices 1 to 2,
The broadcast receiver is a broadcast receiver that outputs the predetermined wave including the predetermined resource specifier corresponding to the broadcast of the predetermined program or the predetermined advertisement broadcast.
A call system characterized by that.
(Appendix 4)
The terminal performs packet communication with the provider terminal after the transmission,
The telephone call system according to supplementary note 3, wherein
(Appendix 5)
The terminal is a terminal constituting a mobile phone network,
The provider terminal is a terminal constituting an IP telephone network,
The mobile phone network and the IP phone network are connected by a gateway,
The gateway converts an IP (Internet Protocol) packet from the terminal into an RTP (Real-Time Transport Protocol) packet and transmits the packet to the provider terminal, and the RTP packet from the provider terminal is converted into the IP packet. Convert and send to the terminal,
The telephone call system according to appendix 4, wherein
(Appendix 6)
The gateway notifies a terminal of an arbitrary IP address among predetermined IP addresses, that is, a temporary ID (Identification),
The terminal regards the temporary ID as its own IP address and performs packet communication with the provider terminal.
The call system according to any one of appendices 4 to 5, characterized in that:
(Appendix 7)
When a predetermined wave propagating in space is input corresponding to a broadcast of a predetermined program introducing a product or a predetermined advertisement broadcast promoting the product, a predetermined resource specifier extracted from the predetermined wave The web page specified by the above is displayed and the web page is displayed on a screen provided to the web page, and when a predetermined symbol arranged on the web page is pressed, a predetermined terminal of a company that handles the product, That is, make a call to the operator terminal,
A call method characterized by the above.
(Appendix 8)
The predetermined wave is a non-audible sound wave having a frequency of 20 kHz or higher.
The call method according to appendix 7, characterized in that:
(Appendix 9)
After the call, perform packet communication with the provider terminal,
The call method according to any one of appendices 7 to 8, characterized in that:
(Appendix 10)
Packet communication is performed with the provider terminal by regarding the predetermined IP address as its own IP address.
The telephone call method according to supplementary note 9, wherein
(Appendix 11)
The predetermined program is a program including a product advertisement.
The terminal according to any one of appendices 1 to 2, characterized in that:
(Appendix 12)
The resource identifier is a URL (Uniform Resource Identifier).
The terminal according to any one of appendixes 1 to 2, or appendix 11, characterized by:
(Appendix 13)
The predetermined symbol is an icon.
The terminal according to any one of supplementary notes 1 to 2, or any one of supplementary notes 11 to 12.
(Appendix 14)
The provider terminal is a terminal that performs communication using SIP (Session Initiation Protocol),
When the gateway receives a packet requesting session establishment from the terminal, the gateway establishes a session with the provider terminal using the SIP.
The call system according to any one of appendices 5 to 6, characterized in that:

DESCRIPTION OF SYMBOLS 1 Television 2 Smartphone 3 Mobile phone network 4 Internet 5 Gateway 6 Web server 7 General public network 8 Gateway 9 Operator terminal 21 Smart phone 22 IP telephone network 23 WebRTC gateway 24 SIP server 25 Operator terminal 100 Terminal

Claims (10)

When a predetermined wave propagating in space is input corresponding to a broadcast of a predetermined program introducing a product or a predetermined advertisement broadcast promoting the product, a predetermined resource specifier extracted from the predetermined wave The web page specified by the above is displayed and the web page is displayed on a screen provided to the web page, and when a predetermined symbol arranged on the web page is pressed, a predetermined terminal of a company that handles the product, That is, make a call to the operator terminal,
A terminal characterized by that. The predetermined wave is a non-audible sound wave having a frequency of 20 kHz or higher.
The terminal according to claim 1. Equipped with a terminal and a broadcast receiver,
The terminal is the terminal according to claim 1,
The broadcast receiver is a broadcast receiver that outputs the predetermined wave including the predetermined resource specifier corresponding to the broadcast of the predetermined program or the predetermined advertisement broadcast.
A call system characterized by that. The terminal performs packet communication with the provider terminal after the transmission,
The call system according to claim 3. The terminal is a terminal constituting a mobile phone network,
The provider terminal is a terminal constituting an IP telephone network,
The mobile phone network and the IP phone network are connected by a gateway,
The gateway converts an IP (Internet Protocol) packet from the terminal into an RTP (Real-Time Transport Protocol) packet and transmits the packet to the provider terminal, and the RTP packet from the provider terminal is converted into the IP packet. Convert and send to the terminal,
The call system according to claim 4. The gateway notifies a terminal of an arbitrary IP address among predetermined IP addresses, that is, a temporary ID (Identification),
The terminal regards the temporary ID as its own IP address and performs packet communication with the provider terminal.
The call system according to any one of claims 4 to 5, characterized in that: When a predetermined wave propagating in space is input corresponding to a broadcast of a predetermined program introducing a product or a predetermined advertisement broadcast promoting the product, a predetermined resource specifier extracted from the predetermined wave The web page specified by the above is displayed and the web page is displayed on a screen provided to the web page, and when a predetermined symbol arranged on the web page is pressed, a predetermined terminal of a company that handles the product, That is, make a call to the operator terminal,
A call method characterized by the above. The predetermined wave is a non-audible sound wave having a frequency of 20 kHz or higher.
The call method according to claim 7. After the call, perform packet communication with the provider terminal,
The call method according to any one of claims 7 to 8. Packet communication is performed with the provider terminal by regarding the predetermined IP address as its own IP address.
The call method according to claim 9.

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