JP2009213099A - Distribution system, on-vehicle unit, distribution method, and program - Google Patents

Abstract

Convenience of searching content information including multimedia content is improved.
A distribution system in which an in-vehicle device mounted on each of one or a plurality of vehicles is connected to a center device that distributes content information via a roadside wireless device so as to be capable of wireless communication, the center device comprising: The content information including identification information for identifying whether or not multimedia content is included is distributed via a roadside wireless device, and the in-vehicle device includes the content information distributed from the center device as the identification information. The control means which judges whether it is included is provided.
[Selection] Figure 8

Description

  The present invention relates to a distribution system, a vehicle-mounted device, a distribution method, and a program.

  Conventionally, an in-vehicle device such as a navigation device performs narrow area wireless communication with a roadside wireless device installed on the road using DSRC (Dedicated Short Range Communication) or the like, and information is transmitted from the center device via the roadside wireless device. It is possible to receive the offer. That is, bidirectional communication between the vehicle-mounted device of the vehicle and the roadside wireless device is possible only while the vehicle is within the communication range of the roadside wireless device. (Information on stores and medical institutions) and advertising information.

Further, in the vehicle-mounted device, by storing various content information distributed from the roadside wireless device, it is possible to reproduce the various content information even in an environment where communication with the roadside wireless device is not possible (Patent Document 1). reference).
JP 2007-109032 A

  By the way, a lot of content information is distributed to the vehicle-mounted device. As a result, the vehicle-mounted device stores a large amount of content information.

  For this reason, the vehicle-mounted device is configured to access content information desired by the user from the stored content information by using a data hierarchical structure of content information. For example, in order to reproduce content information including multimedia content such as music data, the content information including multimedia content desired by the user is searched and accessed from the content information.

However, as described above, there are a large number of pieces of content information, and there are also many pieces of content information that do not include multimedia content. Therefore, it is difficult to find content information including multimedia content desired by the user. Therefore, a user needs a complicated operation to search for content information including multimedia content desired by the user.
When multimedia content including DRM is distributed, it is the intention of the content holder side of the multimedia content to extract only the multimedia content part from the multimedia content format on the navigation side and manage or tamper with it in a separate file. Will not follow.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to improve convenience when searching for content information including multimedia content.

In order to solve the above-mentioned problem, the invention described in claim 1
A vehicle-mounted device mounted in each of one or a plurality of vehicles is a distribution system that is connected to a center device that distributes content information via a roadside wireless device so that wireless communication is possible,
The center device distributes the content information including identification information for identifying whether or not to include a predetermined type of digital content via a roadside wireless device,
The in-vehicle device is
The content information distributed from the center device includes control means for determining whether or not the content information includes the identification information.

The invention according to claim 2 is the invention according to claim 1,
The digital content identified by the identification information is multimedia content.

The invention according to claim 3
A vehicle-mounted device that is wirelessly connected to a center device that distributes content information via a roadside device,
It is characterized by comprising control means for determining whether or not the content information distributed from the center device includes identification information for identifying whether or not multimedia content is included.

The invention according to claim 4 is the invention according to claim 3,
Storage means for storing a search table for storing information for searching the content information including multimedia content;
When it is determined that the distributed content information includes multimedia content, the control means stores information related to the content information in the search table stored in the storage means.

The invention according to claim 5 is the invention according to claim 4,
The content information includes information for determining a data type of multimedia content included in the content information,
The control means stores information related to the content information in the search table stored in the storage means in accordance with a data type of multimedia content included in the distributed content information.

The invention according to claim 6 is the invention according to claim 5,
The information for determining the data type of the multimedia content included in the content information is information for determining whether the content information includes text data or image data.

The invention according to claim 7 is the invention according to any one of claims 3 to 6,
It further has a playback means for playing back the multimedia content,
The control means causes the reproduction means to reproduce the multimedia content corresponding to the information stored in the search table stored in the storage means.

The invention according to claim 8 provides:
A vehicle-mounted device mounted on each of one or a plurality of vehicles is a distribution method in which wireless communication is performed with a center device that distributes content information via a roadside wireless device,
The center device distributes the content information including identification information for identifying that the content information includes multimedia content via a roadside wireless device,
The in-vehicle device is
It has a control process which judges whether the contents information distributed from the center apparatus contains the identification information.

The invention according to claim 9 is:
A vehicle-mounted device that is connected to a center device that distributes content information via a roadside wireless device so that wireless communication is possible.
It is made to function as a control means which judges whether the said content information delivered from the said center apparatus contains the identification information for identifying that a multimedia content is included.

  According to the present invention, convenience when searching for content information including multimedia content is improved.

(First embodiment)
First, the configuration will be described.
FIG. 1 shows a distribution system 100 in the present embodiment.
As shown in FIG. 1, the distribution system 100 includes an on-vehicle device 10 mounted on a vehicle C, a roadside wireless device 20, and a center device 30, and the center device 30 is connected to the onboard device 10 via the roadside wireless device 20. Distribute content information to
A plurality of roadside wireless devices 20 are installed on the road or in parking lots, and each roadside wireless device 20 is connected to the center device 30 via the network N. Further, the roadside apparatus 20 and the vehicle-mounted device 10 of the vehicle C can perform wireless communication.

The contents information will be described in detail later in terms of data format, etc., but in addition to contents (text information, image information, sound information) such as store advertisements, parking lots, medical facility guidance, etc., providers providing contents Information about content, expiration date of content (for example, the start and end date of the expiration date), information on target points where services can be provided (for example, latitude and longitude indicating the location of the advertised store, store name, etc.) Is included. For example, if the content information includes information such as the destination, latitude and longitude information is also stored. However, if the content information does not include information such as the destination, the latitude and longitude information is not necessary, and data indicating the information No information is stored in the area.
In addition, as the content information, the playback point where the popup for notifying the content should be played (for example, the latitude / longitude indicating the playback point of the pop-up, the road type where the pop-up is played, and the vehicle approach direction are specified. Information), transition information of content display screen (information specifying a screen to be displayed next), preference information, and the like may be stored.

  In the present embodiment, information for identifying whether or not the content information includes multimedia content is included in the content information. Specifically, a part of the data area of the content information is used as a flag (hereinafter referred to as a multimedia flag) as identification information for identifying whether or not the content information includes multimedia content. When is on, the content information includes multimedia content. When the multimedia flag is off, the moving image data and image data included in the content information are not multimedia content but information for simply transmitting information such as advertisements and directions.

Hereinafter, each component apparatus will be described in detail.
As shown in FIG. 2, the roadside apparatus 20 includes a main unit 20a and an antenna 20b. The roadside apparatus 20 radiates DSRC radio waves with a limited reach distance from an antenna 20b installed on the side of the road or above the road to form a roadside area Z in the vicinity of the roadside apparatus 20. Bidirectional narrowband wireless communication is possible only with the vehicle-mounted device 10 of the vehicle C in the roadside area Z. Hereinafter, the narrow area wireless communication between the roadside apparatus 20 and the vehicle-mounted device 10 may be referred to as road-vehicle communication.

  DSRC is a communication method using a radio wave of 5.8 GHz band, and its communication range is, for example, several meters to several tens of meters. Since all of the DSRC transmission outputs from the roadside apparatus 20 are set to the same level, the roadside area Z formed by each of the plurality of roadside apparatuses 20 is substantially constant regardless of the installation location.

  The main body device 20a performs processing for mediating exchange of information between the vehicle-mounted device 10 and the center device 30. That is, the information received from the vehicle-mounted device 10 via the antenna 20b is transferred to the center device 30, and the content information transmitted from the center device 30 is transferred to the vehicle-mounted device 10. A computer terminal including a control unit that performs information processing and communication control, a storage unit, and the like can be applied to the main body device 20a.

The vehicle-mounted device 10 is mounted on the vehicle C and has a function of performing a process for using an ETC (Electronic Toll Collection System) by DSRC in addition to a navigation function of performing a process for guiding to a guide route. Yes.
As shown in FIG. 3, the vehicle-mounted device 10 includes a car navigation unit 1, a communication module 2, a DSRC unit 3, and a control unit 4.

The control unit 4 functions as a control unit, and includes a CPU (Central Processing Unit), a RAM (Random Access Memory), and the like. The control unit 4 performs various calculations in cooperation with a control program stored in the storage unit 1f. Centralized control.
For example, when performing road-vehicle communication with the roadside apparatus 20, the communication operation of the DSRC unit 3 is controlled. The DSRC unit 3 is controlled in cooperation with the DSRC control unit 3a of the DSRC unit 3. Further, it also functions as a playback unit that performs storage control, playback control, and the like of content information received from the center apparatus 30 via the DSRC unit 3.

The car navigation unit 1 includes a car navigation control unit 1a, a current location detection unit 1b, a map storage unit 1c, an input unit 1d, a display unit 1e, a storage unit 1f, and the like, and performs processing for guiding the vehicle C to the guide route.
The car navigation control unit 1a determines from the current location of the vehicle C to the destination set via the input unit 1d based on the current location information acquired from the current location detection unit 1b and the map information stored in the map storage unit 1c. A guide route is calculated. And the map screen for guide | inducing to the guidance route calculated using the map information memorize | stored in the map memory | storage part 1c is produced | generated, and it displays on the display part 1e.

  The current location detection unit 1b includes various sensors such as a GPS antenna, an angle sensor, an azimuth sensor, and a distance sensor, and detects the current location of the vehicle C based on the detection results of these sensors. The GPS antenna detects a GPS signal transmitted from a GPS satellite. The angle sensor detects the acceleration of the vehicle (rotation speed in the horizontal direction per unit time) indicating the amount of change in the moving direction, and the direction sensor detects the geomagnetism and detects the absolute direction of the vehicle. The current location detection unit 1b generates current location information (information such as longitude and latitude) indicating the current location of the vehicle based on each detection result acquired from these sensors, and outputs the current location information to the car navigation control unit 1a.

  The map storage unit 1c includes a recording medium such as a memory or a DVD, and stores map information necessary for guidance display, guide information (road information, traffic jam information, etc.) received via the communication module 2, and the like. .

The input unit 1d includes an operation key and a touch panel configured integrally with the display unit 1e. The input unit 1 d generates operation signals corresponding to these operations and outputs them to the control unit 31.
The display unit 1 e includes a monitor and displays various types of information on the monitor according to the control of the control unit 4. For example, a setting screen, a map screen, a display screen of content information received from the center device 30, and the like.

The storage unit 1f functions as a storage unit, is configured from a memory, and stores a control program executed by the control unit 4 and the car navigation control unit 1a, parameters and data necessary for executing the program, and the like.
In addition, the storage unit 1 f stores uplink information provided to the center device 30 and also stores content information received from the center device 30. When there are a plurality of distribution operators (hereinafter referred to as regular distribution operators) with whom the user has contracted for distribution of content information, uplink information is generated by the control unit 4 with contents corresponding to each distribution operator. And stored in the storage unit 1f. The control unit 4 constantly updates and stores the uplink information in the storage unit 1f so that the uplink information becomes the latest content. Details of the uplink information will be described later.

  The communication module 2 includes antennas for optical communication, FM communication, and 2.4 GHz radio wave communication, and performs optical communication, FM communication, and radio wave communication with a communication center. The communication module 2 receives traffic jam information, road traffic information, and the like from the communication center and outputs them to the control unit 31. In addition, although a VICS center etc. can be mentioned as a communication center, it is not restricted to this, Moreover, as information received from a communication center, it is not restricted to traffic jam information and road traffic information.

The DSRC unit 3 performs processing for using ETC by DSRC, communication processing for receiving content information from the center device 30, and the like.
As shown in FIG. 3, the DSRC unit 3 includes a DSRC control unit 3a, a communication unit 3b, a storage unit 3c, an ETC processing unit 3e, and an IC card I / F 3f.

The DSRC control unit 3a includes a CPU, a RAM, and the like, and controls the operation of each unit of the DSRC unit 3 in cooperation with a control program stored in the storage unit 3c.
For example, when performing payment by ETC, the communication operation of the communication unit 3b is controlled so that payment information is transmitted to and received from an ETC base station (a radio base station provided near the ETC gate to perform ETC payment). . Further, the ETC processing unit 3e performs a payment information writing process.
In addition, when content information is received from the center device 30, the information stored in the uplink information storage area M of the storage unit 3 c is transmitted to the roadside apparatus 20 by the communication unit 3 b according to the instruction of the control unit 4. On the other hand, when content information is received via the roadside apparatus 20 by the communication unit 3 b, it is output to the control unit 4.

  The communication unit 3b includes an antenna fixed near the windshield on the dashboard of the vehicle C, and transmits and receives DSRC radio waves to and from the roadside apparatus 20 and the ETC base station via the antenna.

The storage unit 3c stores a control program executed by the DSRC control unit 3a.
In addition, an uplink information storage area M is provided in the storage unit 3c. The uplink information storage area M is a storage area provided exclusively for uplink information for providing information desired by the user to the center device 30, and stores characteristic information of the vehicle-mounted device 10.

The ETC processing unit 3e reads and writes payment information and the like with respect to a credit card with IC or a debit card inserted into and removed from the IC card I / F 3f.
The IC card I / F 3f includes a slot for the credit card or the like, and mediates the exchange of information between the IC such as a credit card inserted into the slot and the ETC processing unit 3e.

Next, the center device 30 will be described.
The center device 30 stores the content information and distributes it to the vehicle-mounted device 10.
Although only one center apparatus 30 is shown in FIG. 1, there are a plurality of distribution companies that distribute content information, and the center apparatus 30 is provided for each distribution company.

FIG. 4 shows a functional configuration of the center device 30.
As shown in FIG. 4, the center device 30 includes a control unit 31, an input unit 32, a display unit 33, a storage unit 34, and a communication unit 35.

The control unit 31 includes a CPU, a RAM, and the like, performs various calculations in cooperation with a control program stored in the storage unit 34, and performs centralized control of each unit.
For example, the control unit 31 reads and organizes the content information stored in the storage unit 34, and controls distribution of the organized content information. Note that organization refers to selection of content information to be distributed, processing of content information selected in accordance with a distribution format, and the like.

The input unit 32 includes a keyboard or the like, receives an operation input, and outputs an operation signal corresponding to the operation input to the control unit 31.
The display unit 33 includes a display, and displays various screens on the display according to display control of the control unit 31.

  The storage unit 34 stores various data necessary for executing the program in addition to the program executed by the control unit 31. The storage unit 34 stores content information to be distributed. Content information is classified into a plurality of items. Details of the content information will be described below.

FIG. 5 shows an example of the format of content information.
As shown in FIG. 5, the content information includes information with individual IDs, such as classification information, business operators, content details, expiration dates, time provision, target points, playback points, transition information, parking lot information, Driving support information, preference information, and the like are included.

The classification information of ID00 is information indicating a list of identification numbers of each information included in the content information. By confirming the presence or absence of the identification number of each piece of information in this category information, it can be immediately determined whether or not each piece of information exists.
In addition, the classification information indicates the data amount of information corresponding to the identification number.

The identification number indicates the classification of each information included in the content information.
In addition, identification numbers from ID01 to ID255 are allocated. For example, ID10 indicates target point information and ID40 indicates detailed information.
Note that information corresponding to each ID included in the content information includes header information (not shown), and a multimedia flag indicating that information corresponding to ID 10 described later includes multimedia content. As described above, a flag or the like indicating the content corresponding to each ID is stored as header information.
Hereinafter, each piece of information corresponding to the identification number will be described.

The information of the business entity with ID01 is information for identifying the service business operator, and is, for example, a business operator code.
The content details of ID02 and ID03 are detailed information regarding the content information. For example, ID02 stores an information code individually assigned to the content information by the service provider, a category of preference information to which the content information belongs, and ID03 indicates immediate / accumulation indicating whether reproduction is performed immediately or accumulated. Codes etc. are stored.
In addition, the code indicating the provider of the content distributed by the service provider, the text notifying the company, the information display text for searching, rearranging, and deleting the content information are stored as the content details of ID02. May be.

The expiration date of ID04 is information indicating the expiration date for content reproduction, and is represented by a date and time indicating the start time and end time of the expiration date.
The time provision of ID05 is information such as business hours during which a service can be provided at a target point described later.

A target point refers to a store or facility that provides a service, and information on the target point of ID10 is, for example, target point display indicating a target point coordinate (latitude and longitude) indicating the position of the target point, a target point name, and the like. Text, content that is related to the description of the target location, text, image, audio, video, URL when providing information on the target location via IP communication, icon image used when displaying the target location on the map, Consists of partner parking information.
For example, text data for supplementary explanation about the target point may be stored in the text region, and a photograph of the target point may be stored in the image region. Similarly, audio data for route guidance from the vicinity of the target point may be stored in the audio region, and moving image data for route guidance to the target point may be stored in the video region.
In the case of content information that does not have a target point, information for explanation for screen transition may be stored.

  In the present embodiment, in the case of content information including multimedia content, as information stored in ID10, as described above, in each data area in which text, image, audio, and video are stored, multimedia is stored. Various information related to content and multimedia content is stored. For example, character information such as artists and performers related to the multimedia content is stored in the text area, and a jacket photo, a PV (Promotion Video) image, and the like are stored in the image area. Music data and the like are stored in the audio area, and moving image data such as a movie is stored in the video area.

FIG. 6 shows an example of the header information F of ID10. As shown in FIG. 6, the flag information corresponding to each item is stored in the header information F of ID10, and indicates whether or not the content corresponding to each item is included in the content information. When the flag is on (value is 1), the content information includes content corresponding to the flag, and when the flag is off (value is 0), the content information includes content corresponding to the flag. Is not included.
For example, the item “multimedia” stores a multimedia flag as identification information indicating whether or not the content information includes multimedia content, so if the multimedia flag is on, The content information indicates multimedia content. Similarly, if the “video” item is on, video data is stored in the ID 10 video of the content information, and if the “compressed audio” item is on, the content information This indicates that compressed audio such as music is stored in the audio of ID10. The format of the header information F is not limited to the example of FIG.
This header information F is not limited to ID10, but is also included in ID01, 02, 20, 40, and 60.

  Information on the information provision point of ID20 is information on an information provision area where content is to be reproduced. For the accumulated content, a pop-up notification is made to notify that there is content when the target vehicle C enters from the direction of the road in the information providing area, and when the reproduction instruction is given there, the content is reproduced. Do. The information provision point of ID20 is information that specifies conditions for performing pop-up notification and content reproduction at this time. For example, it consists of the center coordinates (latitude and longitude) of the information providing area, the radius, a direction code indicating the approach direction of the target vehicle C, a road type, a display image for pop-up notification, audio, and the like.

  The transition information of ID30 is information used when there are a plurality of content information including an image in the content of the information provision point of ID20, and the image of each content information is transitioned and displayed. The transition information includes, for example, a next reproduction information code indicating the information code of the next transition destination.

  Hereinafter, the information of “ID10” and “ID30” will be described with reference to FIG. Each screen D1-D8 shown in FIG. 7 is an example of a screen transition displayed on the vehicle-mounted device 10 based on the content information. Here, one information group corresponds to one screen. The screen D1 is a menu screen and has three transition destinations. When “entertainment” is selected on the screen D1, the screen transitions to a screen D2 showing a list of service providers (distribution companies). There are four transition destinations on the screen D2. When one distribution company is selected on the screen D2, the screen transits to a screen D3 indicating the content information of the selected distribution company. There are four transition destinations on the screen D3. When “living information” is selected on the screen D3, the screen changes to a screen D4 showing a list of living information. There are three transition destinations on the screen D4. When “medical / hospital” is selected on the screen D4, a transition is made to a screen D5 showing a list of medical / hospitals. There are two transition destinations on the screen D5. When “holiday medical hospital list” is selected on the screen D5, a transition is made to a screen D6 showing a list of holiday medical hospitals. There are seven transition destinations on the screen D6. When “pediatric” is selected on the screen D6, a transition is made to a screen D7 showing a list of hospitals for pediatrics. There are four transition destinations on the screen D7. When one pediatric hospital is selected on the screen D7, a transition is made to a screen D8 showing information on the selected pediatric hospital. Although there is no transition destination on the screen D8, there is target point information of “ID10”.

Here, for example, the “next reproduction information code” of “ID30” of the information group corresponding to the screen D6 stores “information code” of “ID02” of the information group of the transition destination. In addition, “information code” of “ID02” of the information group of the transition destination is stored in “next reproduction information code” of “ID30” of the information group corresponding to the screen D7. Further, the information group corresponding to the screen D8 has no transition information.
Further, the information group corresponding to the screen D2 has transition information, but does not have “target point coordinates” of “ID10”.

The detailed information of ID40 is detailed information regarding the content of ID10.
The detailed information is information for explaining the content, and in this embodiment, when the content of ID10 is multimedia content, information such as artist name, album name, and genre is stored. The
The display character data is information for assisting the user, such as information on service target points and information for screen transition guidance. The phonetic character string stores information to be transmitted to the user by voice.

  The parking lot information of ID50 is information relating to a parking lot registered in advance. The parking lot information is, for example, a parking lot ID registered in advance in the information distribution device, full availability information, and the like. Full availability information refers to information indicating the fullness of the vehicle, the status of empty vehicles, and the fullness rate.

  The driving support information of ID60 is information that assists driving with respect to driving in the site, such as near the entrance / exit of the parking lot, merging / branching in the parking lot, and speed guidance. The driving support information includes, for example, an image for driving support, a phonetic character string used for voice guidance to inform the user by speaking the content of the information when the content information is received, and compression For example, voice and information on the order of voice playback.

  The preference information of ID80 is information used for selecting content information to be distributed as described above. The preference information includes, for example, a version of the preference information, a display text indicating a category name defined by the version, a phonetic character string, and detailed information on the category.

  Content information created in advance including the information of each ID is stored in the storage unit 34, and the content of the content information to be distributed is selected by the control unit 31 during distribution. Information on each ID is included in the content information as necessary, and not all ID information is always included in the content information. For example, if there is no partner parking lot designated as a partner at the target location, the partner parking lot information is not included in the target location of ID10.

Next, the operation will be described.
FIG. 8 is a flowchart illustrating the flow of processing in each of the center device 30, the roadside apparatus 20, and the vehicle-mounted device 10 when distributing content information.
As shown in FIG. 8, when the engine of the vehicle C is first started and the power of the vehicle-mounted device 10 is turned on (step S1), the control unit 4 generates characteristic information of the vehicle-mounted device 10 and updates the storage unit 3c. Write to the link information storage area M (step S2). The characteristic information is obtained by the control unit 4 inquiring about each item such as the display unit 1e about items that have been negotiated with the center device 30 in advance, or by reading information stored in the storage unit 1f in advance. get. Then, the control unit 4 encodes the acquired information and writes the code in a corresponding area of the uplink information storage area M. In practice, control information for instructing writing is output to the DSRC control unit 3a, and the DSRC control unit 3a writes the information to the uplink information storage area M.

  Thereafter, when the vehicle C starts traveling and enters the roadside area Z of the roadside apparatus 20 (area-in), the roadside apparatus 20 detects the vehicle C, and a connection process using the DSRC unit 3 of the vehicle-mounted device 10 and DSRC communication. Is started (steps S3a and S3b). That is, when a DSRC radio wave is transmitted and a response from the vehicle-mounted device 10 is obtained, a communication path is established. When the communication path is established, the roadside apparatus 20 transmits notification information indicating that the connection is completed to the center apparatus 30 (step S4a). On the other hand, the DSRC unit 3 of the vehicle-mounted device 10 outputs notification information indicating that the connection has been completed to the control unit 4 (step S4b).

Next, when the roadside apparatus 20 requests the DSRC unit 3 of the vehicle-mounted device 10 to transmit information in the uplink information storage area M, the DSRC unit 3 stores the characteristic information written in the uplink information storage area M. Is transmitted to the roadside apparatus 20 (step S5). The characteristic information is transmitted to the center apparatus 30 via the roadside apparatus 20.
The center device 30 determines whether or not the user of the vehicle-mounted device 10 is a member of the distribution service based on the vehicle-mounted device ID included in the received characteristic information (step S6).

If it is determined that none of the on-board device IDs of all members of the distribution service stored in the storage unit 34 matches the received on-board device ID and is a non-member (step S6; N), it is for the non-member. The content information is transmitted to the vehicle-mounted device 10 via the roadside apparatus 20 (step S61). Thereafter, the process proceeds to step S18 shown in FIG. The non-member content information is information on general contents such as public advertisement information such as train delay information and tax payment notice information. The vehicle-mounted device 10 performs multimedia determination processing (details will be described later) for determining whether or not the distributed content information includes multimedia content (step S11), and the content information is stored in the storage unit. Save to 1f (step S11). The stored content information is reproduced at a predetermined timing.
On the other hand, if there is a matching vehicle-mounted device ID, it is determined that the member is a member (step S6; Y), and notification information on the provider code of the distribution provider is transmitted to the roadside apparatus 20 (step S10).

  When the notification information of the operator code is received via the roadside apparatus 20, the control unit 4 of the vehicle-mounted device 10 receives the operator code included in the uplink information stored in the storage unit 1f and the notified business. The person code is collated (step S10). If there is no matching company code (step S10; N), the process proceeds to step S19 shown in FIG.

  If there is a matching carrier code (step S10; Y), it is determined that the delivery carrier of the received carrier code is a legitimate delivery carrier, and the control unit 4 performs an uplink corresponding to the carrier code. Information is read from the storage unit 1f and written to the uplink information storage area M (step S9). As described above, the uplink information is generated and updated by the control unit 4 in accordance with each distribution company, and therefore, the contents according to the distribution company are the latest contents.

On the other hand, the center apparatus 30 distributes default content information to the vehicle-mounted device 10 via the roadside apparatus 20 (step S14). The default content information is information on general contents such as public advertisement information as well as non-member content information. The in-vehicle device 10 performs multimedia determination processing on the distributed content information in the same manner as in step S11 (step S11), and stores the distributed content information in the storage unit 1f (step S12).
The center device 30 periodically polls the vehicle-mounted device 10 (step S15), and requests the uplink information written in the uplink information storage area M.

  When the control unit 4 writes the uplink information, the DSRC unit 3 transmits the uplink information stored in the uplink information storage area M according to the polling from the center device 30 to the roadside device 20. Is transmitted to the center device 30 via the network (step S14).

The subsequent processing will be described with reference to FIG.
As shown in FIG. 9, in the center device 30, the control unit 31 organizes content information suitable for the taste of the member from the transmitted uplink information, and the content information is distributed to the vehicle-mounted device 10 (step S15). . The in-vehicle device 10 performs multimedia determination processing described later on the distributed content information (step S16), and stores the distributed content information in the storage unit 1f (step S17).

  Thereafter, when all the content information to be distributed by the center device 30 is distributed, the control unit 31 generates message information for notifying the end of distribution and transmits the message information to the vehicle-mounted device 10 (step S18). This message information of the end of distribution is for prompting the user to area out. Thereafter, when the distribution of the content information from the center device 30 is interrupted for a certain period of time, the control unit 4 of the vehicle-mounted device 10 determines that the distribution has ended and performs control to delete the uplink information (step S19). In response to this control, the DSRC control unit 3a deletes the uplink information in the uplink information storage area M.

Next, the multimedia determination process performed by the control unit 4 of the vehicle-mounted device 10 in step S11 and step S16 will be described.
In the present embodiment, the content information includes the multimedia flag as described above. In the multimedia determination process, it is determined whether or not the multimedia flag of the distributed content information is on, and it is determined whether or not the content information includes multimedia content. If the content information includes multimedia content, information for searching for the content is stored in a search table T described later.

  As shown in FIG. 10, the control unit 4 of the vehicle-mounted device 10 determines whether or not the multimedia flag in the ID 10 of the distributed content information is turned on (step S101). If the multimedia content flag is on (step S101; YES), it is determined that the content information is content information including multimedia content, and the content information is included in the ID 10 of the content information as search information for searching for the content information. Is extracted (step S102). Specifically, when the multimedia content is music data, since the genre, artist, title information of the music, etc. are stored in the text of the content in ID10, the text is extracted in step S102. And used as search information for searching multimedia content. For example, when the information “jazz_Makoto Sato_PINK” is stored in the text of the content in ID10, the genre, artist name, song name and control unit 4 identify the character strings separated by spaces, Each character string is extracted as search information. Note that the search information extraction method is not limited to this.

The search information extracted in step S102 is stored in the search table T together with the information code stored in ID02 of the content information (step S103).
If the multimedia flag is off (step S101; NO), the process ends.

FIG. 11 shows an example of the search table T.
As shown in FIG. 11, the search table T includes an “information code” field, a “genre” field, an “artist name” field, and a “music name” field.
In the “information code” field, an information code of ID02 is stored. In the “genre” field, the “artist name” field, and the “music name” field, the genre, artist name, and music name stored in the text of ID 10 are stored.
FIG. 11 shows an example of the search table T when music data is included as multimedia content. However, when a movie promotion video is included as multimedia content, it appears in the “Artist Name” field. The name of the person may be stored, and the title of the movie may be stored in the “music name” field.

Each time content information including multimedia content is distributed from the center apparatus 30, information for searching for the content is written as a new record in the search table T by the multimedia determination process. The user refers to the search information stored in the search table T and reproduces the desired multimedia content by an operation from the operation screen 90 described later.
Further, at the time of reproduction, the multimedia code is identified and reproduced by comparing the information code in the search table T with the information code of ID02 uniquely assigned to the content information stored in the storage unit 1f. .

FIG. 12A shows an example of an operation screen 90 showing a list of multimedia contents stored in the search table T displayed by input from the input unit 1d.
As shown in FIG. 12A, a list display field 91 is displayed on the operation screen d1 as a list of multimedia contents stored in the search table T. Specifically, the information in the search table T is read in the order of the information code, and the item names of the items are displayed in the order of the item numbers using the information (genre, artist name, etc.), as shown in FIG. A button for selecting whether to display multimedia contents only for music data or only video data is displayed. That is, when the music data button 92 is pressed (input through the touch panel or the like of the operation screen 90), only the music data is narrowed down among the multimedia contents corresponding to the information codes stored in the search table T, and the operation screen is displayed. 90. Similarly, when the video data button 93 is pressed, only the video data is narrowed down and displayed on the operation screen 90. Specifically, when the header information of ID10 of the content information stored in the search table T is referred to and the item “compressed audio” is on (value is 1), the content information includes a song. Similarly, if the “video” item is on (value is 1), it is determined that the content information includes video data, and is displayed on the operation screen 90. Is done. In addition to the text data, the music data may include jacket photo data (still images), and in that case, the music data can be included in both the music list and the video list.

  When a multimedia content is selected from the list display column 91 by an input from the input unit 1d, the multimedia content can be reproduced. For example, when the multimedia content in the list display column 91 is selected by input from the input unit 1d, if the multimedia content is music data, the audio player can be activated and played back. Similarly, in the case of video data, a moving image playback player is activated and a moving image can be reproduced.

FIG. 12B shows an example of an operation screen 95 during the reproduction of multimedia content in the present embodiment. As shown in FIG. 12B, the operation screen 95 includes image data 96, a text data display field 97, various buttons 98, and the like.
In the example of FIG. 12B, the image data 96 displays a jacket photo of an artist related to the multimedia content being played back. In the text data display field 97, text data (artist name or title name) related to the multimedia content is displayed. The various buttons 98 are buttons for reproducing multimedia contents and various buttons for giving an input instruction for returning to the operation screen 90 (transition to the operation screen 90).
Various data relating to the multimedia content displayed on the operation screen 95 is displayed based on information stored in the search table T. The display form is not limited to the example shown in the figure. For example, the content information may be read based on the information code stored in the search table T, and various information in the content information may be extracted and displayed on the operation screen 95.
Since the in-vehicle device 10 determines whether or not the received content information includes multimedia content, and generates the operation screen 90, the same operation screen can be used to create multiple operations on the same operation screen. Search and playback of media content can be performed.

  As described above, according to the present embodiment, the center device 30 transmits content information including a multimedia flag indicating that the content information to be distributed includes multimedia content to the vehicle-mounted device 10. In the vehicle-mounted device 10, it is determined whether or not the distributed content information includes multimedia content in order to determine on / off of the multimedia flag by multimedia determination processing at the timing of receiving the content information. Can do. As a result, the vehicle-mounted device 10 can determine whether the received content information is multimedia content.

  In addition, when the in-vehicle device 10 receives content information from the center device 30, search information for searching for content information including multimedia content is stored in the search table T by multimedia determination processing. The user can easily search for desired multimedia contents by referring to the search table T by an operation from the operation screen 90 displayed as a list. Further, as in the present embodiment, by inputting a search condition by an operation on the screen, it is possible to display only music data or only video data in the multimedia content.

  In addition, since the multimedia content is searched from the operation screen displayed in the list, the user does not perform a complicated operation when searching for the multimedia content desired by the user, and convenience is improved. That is, it is not necessary to search for multimedia contents by screen transition using a hierarchical structure as shown in FIG. 7, and multimedia contents can be easily searched only by displaying a list.

In addition, the said embodiment is a suitable example of this invention, and is not limited to this.
For example, when content information including multimedia content is distributed from the center device 30, the genre information of the multimedia content can be included in the content information. The user designates music of a favorite genre in advance, and multimedia judgment processing is performed only when content information including multimedia content in which the genre included in the distributed content information matches the genre specified by the user is distributed. Thus, the content information and the search information may be stored in the search table T. This makes it easier for the user to search for multimedia content included in the content information of his / her favorite genre.

  Further, when data of a genre that the user does not want to see is distributed, the search information of the content information can be prevented from being stored in the search table T by the same process. As a result, information on genres that are not of interest can be excluded from the list.

  Further, in the present embodiment, the text of the content in the content information ID 10 is extracted as the search information in step S102, but the information used as the search information is not limited to this. For example, information stored in the detailed information of ID 40 may be extracted as search information. According to the agreement for each business operator, which information is used as search information among the information constituting the content information is determined.

  Further, the method of storing the search information extracted in step S102 is not limited to the example of this embodiment. In the example of the present embodiment, character strings separated by space characters are identified as genres, artist names, and song names, respectively, and extracted as search information. However, other methods may be used. For example, it may be stored in the text of ID10 in the order of genre, artist name, and song name in advance according to the agreement of the business operator, or characters including a specific character string may be determined. In addition, if there is a character “NAME: BLUE” in the text of ID10, a character string “NAME” indicates a song name, and a song name “BLUE” is extracted. Similarly, the genre and artist name may be identified by characters including a specific character string.

In this embodiment, content data determined to include multimedia content is stored in the search table T as new records sequentially in the search table T. It is not limited to this embodiment.
For example, as described above, the header information F of ID10 of the content information can determine whether the content information includes music data or video data, so refer to the flag stored in the header information F. You may distribute to a table. Specifically, when the header information F is determined to be music data, information related to the data is stored in a table dedicated to music data, and when it is determined to be video data, the information related to the data is dedicated to video data. Store in a table. Thereby, when the user refers to the table storing the music data, it can be displayed in a list using the text information stored in the content information. Similarly, when the user refers to the table storing the video data, the image data included in the content information can be displayed as a list using thumbnails. The listing is not limited to this, and the music data may include a jacket photo (still image) together with text information, and may be displayed together as a list. The reverse is also true, and the video data may contain text information along with the image data, and may be displayed together as a list.

FIG. 13A shows an example of the operation screen 100 when a text list is displayed. As shown in FIG. 13A, when text information is sorted into a table and listed, a list of music titles and artist names can be displayed using the text information with reference to the table.
FIG. 13B shows an example of the operation screen 110 when an image list is displayed. As shown in FIG. 13B, when the image list is sorted into a table and listed, a list of video data can be displayed using the image data as thumbnail information with reference to the table.
Thus, content information can be distributed at the time when the multimedia flag is determined and stored in the table, so that convenience in searching is improved.

  In addition, the present invention is not limited to the above-described embodiment, and can be changed as appropriate.

(Second Embodiment)
Next, a second embodiment of the distribution system 100 according to the present invention will be described with reference to FIG. Since the second embodiment is different from the first embodiment only in the media content determination process, the following description will focus on differences from the first embodiment.

  When the content information to be distributed includes multimedia content, the center device 30 is different from the first embodiment in that a specific character string (hereinafter referred to as identification information) is stored in the content information. That is, in the first embodiment, the determination as to whether or not the content information includes multimedia content is performed based on the multimedia flag. However, in the second embodiment, whether or not identification information is included. Judge by. Specifically, when the identification information (for example, a character string such as “MULTIMEDIA”) is included in the detailed information of ID 40, it is determined that the content information includes multimedia content.

  Other configurations such as the data format of the content information are the same as those shown in the first embodiment, and thus description thereof is omitted.

  FIG. 14 shows multimedia determination processing in the present embodiment (hereinafter referred to as multimedia determination processing B in order to distinguish it from the first embodiment).

As shown in FIG. 14, the control unit 4 of the vehicle-mounted device 10 determines whether or not identification information (for example, a character string such as “MULTIMEDIA”) is included in the detailed information of the ID 40 of the distributed content information ( Step S141). If the identification information is included (step S141; YES), it is determined that the content information is content information including multimedia content, and the search information for searching the content information is the details of the ID 40 of the content information. Extract from the information (step S142). Specifically, when the multimedia content is music data, since the genre, artist, title information of the music, etc. are stored in the detailed information in the ID 40, the detailed information is extracted in step S142. And used as search information for searching multimedia content. For example, when the information “MULTIMEDIA jazz_Makoto Sato_PINK” is stored in the text of the content in ID 40, the character string delimited by a space is added to the character information “MULTIMEDIA” that is the identification information. The artist name, song name, and control unit 4 are identified, and each character string is extracted as search information. Note that the search information extraction method is not limited to this.
When the detailed information 1 includes the character string “MULTIMEDIA”, the detailed information 2 includes “genre name”, the detailed information 3 “artist name”, and the detailed information 4 “music name”. Search information may be set in.

The control unit 4 stores the search information extracted in step S142 in the search table T together with the information code of ID02 of the content information (step S143).
If the identification information is not included in the content information (step S141; NO), step S142 and step S143 are skipped.

  As described above, according to the second embodiment, the center device 30 transmits content information including identification information indicating that content information to be distributed includes multimedia content to the vehicle-mounted device 10. In the vehicle-mounted device 10, it is determined whether or not the distributed content information includes multimedia content in order to determine whether the identification information is included or not at the timing when the content information is received. be able to. As a result, the vehicle-mounted device 10 can determine whether the received content information is multimedia content.

  In addition, the said embodiment is a suitable example of this invention, and is not limited to this. In the second embodiment, a specific character string stored in the content information is used as identification information. However, if an artist name designated in advance is stored in the area for storing character information, the content The information may be regarded as multimedia content, and the search information may be stored in the search table T.

  In the above embodiment, when the identification information (character string such as “MULTIMEDIA”) in the detailed information is included, it is determined that the content information includes multimedia content. However, the present invention is not limited to this. If there is no identification information such as “MULTIMEDIA” in the detailed information and the multimedia content flag of the header information F of ID 40 is on as in the first embodiment, it is determined that multimedia content is included. You may do it. As the search information at that time, the detailed information in the ID 40 may be used, or the text in the content in the ID 10 may be used.

  In the above embodiment, when the identification information (character string such as “MULTIMEDIA”) in the detailed information is included, it is determined that the content information includes multimedia content. However, the present invention is not limited to this. If there is no identification information such as “MULTIMEDIA” in the detailed information and the multimedia content flag of the header information F of ID 40 is ON, it may be determined that the multimedia content is included. As the search information at that time, the detailed information in the ID 40 may be used, or the text in the content in the ID 10 may be used.

  Moreover, the character string used as identification information may differ for every provider who owns the center apparatus 30. Since the identification information is different for each business operator, the search table T can be assigned to each business operator that provides the content information, and the user can easily search for multimedia contents provided by the business operator desired by the business operator. it can.

  In the second embodiment, detailed information in the ID 40 is extracted as search information in step S142. However, information used as search information is not limited to this. For example, as in the first embodiment, text in content in ID 10 may be used. Further, the storage method of the search information is not limited to the present embodiment, similar to the first embodiment.

  In addition, the present invention is not limited to the present embodiment, similar to the first embodiment.

(Third embodiment)
Next, a third embodiment of the distribution system 100 according to the present invention will be described with reference to FIG. Note that the third embodiment is different from the first embodiment only in the media content determination process, and therefore, in the following, differences from the first embodiment will be particularly described.

  Since other configurations such as the data format of the content information are the same as those shown in the first embodiment, description thereof will be omitted.

  FIG. 15 shows multimedia determination processing in the present embodiment (hereinafter referred to as multimedia determination processing C in order to distinguish from the first and second embodiments).

As illustrated in FIG. 15, the control unit 4 of the vehicle-mounted device 10 determines whether or not the multimedia flag in the ID 10 of the distributed content information is turned on (step S151). If the multimedia content flag is on (step S151; YES), it is determined that the content information is content information including multimedia content, and information related to the content information is extracted (step S152). Specifically, if data is stored in the “text” data area in the content with ID 10 of the content information, the text is extracted. Similarly, if data is stored in the data area of “image” in the content in ID10, the image is extracted. In addition, the extraction method of the information regarding content information is not restricted to this.
In addition, when text data and image data are included, the jacket photo (still image) included as image data in the text list may be displayed together, or the video content in the image list may be displayed. The title name may be displayed together.

  Information on the content information extracted in step S152 is stored in a table corresponding to each information together with the information code (step S153). Specifically, when “text” data in the content of ID10 is extracted in step S152, the data is stored in a table for storing the data (hereinafter referred to as a text information search table T2) and stored in the content of ID10. When the “image” data is extracted, it is stored in a table (hereinafter referred to as an image search table T3) for storing the data. That is, the text information search table T2 stores text information of content determined to include multimedia content, and the image search table T3 stores text information of content determined to include multimedia content. ing. Similar to step S152, the extracted content information is not limited to this, and the information is stored in a table corresponding to the information extracted in step S152.

  If the multimedia flag is off (step S151; NO), step S152 and step S153 are skipped.

  As described above, according to the third embodiment, the center device 30 transmits content information including a multimedia flag indicating that the content information to be distributed includes multimedia content to the vehicle-mounted device 10. The in-vehicle device 10 determines whether or not the multimedia flag is included at the timing of receiving the content information by the multimedia determination process, and therefore determines whether or not the distributed content information includes the multimedia content. It can be carried out. As a result, the vehicle-mounted device 10 can determine whether the received content information is multimedia content.

  Also, in the third embodiment, unlike the first embodiment, when it is determined that the content information includes the multimedia flag, the information related to the content information is stored in the table. The multimedia content desired by the user can be searched without performing a complicated operation of searching for the multimedia content desired by the user from the screen transition using the hierarchical structure shown in FIG. When searching, by referring to the table, it is possible to search using the same operation screen as in FIG.

  In addition, the said embodiment is a suitable example of this invention, and is not limited to this. In the third embodiment, the information stored in the content in the content information ID 10 is extracted as the information related to the content information. For example, the information stored in the detailed information of ID 40 is used as the information related to the content information in step S152. You may extract by. In this case, if it is determined in step S151 that the multimedia flag is on, in step S152, the detailed information stored in the ID 40 is extracted, and the detailed information is stored in a dedicated table.

  In addition, the present invention is not limited to the present embodiment, similar to the first embodiment.

(Fourth embodiment)
Next, a fourth embodiment of the distribution system 100 according to the present invention will be described with reference to FIGS. 16 and 17. Note that the fourth embodiment is different from the first embodiment only in step S102 in the media content determination process, and therefore, the points that are different from the first embodiment will be described below.

In the first embodiment, in step S102 of the media content determination process, character strings delimited by spaces in the ID10 text of the content information are recognized as genres, artist names, and song names, respectively. Are extracted as search information.
In the fourth embodiment, the character string stored in the text of ID10 of the content information is represented by a code indicating what information is stored in the text of ID10 of the content information (hereinafter referred to as an identification code). Determination is made in step S102.

As the identification code, for example, a “TAB” code indicating a blank character can be used. When the “TAB” code is used as the identification code, the text of ID10 of the content information is “Makoto Sato“ TAB ”PINK” (the “TAB” code is inserted between the character string “Makoto Sato” and the character string “PINK”. Is stored), the artist name “Makoto Sato” and the song name “PINK” are extracted in step S102.
In addition, when two “TAB” codes are stored between character strings, it may be determined that the name is an album name instead of a song name. For example, if data “ID Makoto Sato“ TAB ”PINK“ TAB ”Color” is stored in the ID 10 text of the content information, the artist name “Makoto Sato”, the song name “PINK”, and “Color "Will be extracted.

  In addition, a tag code that can identify what information the character string represents, such as “<artist>” or “<music name>”, can be used as the identification code. For example, if data “<artist> Makoto Sato <music name> PINK” is stored in the text of ID10, the artist name “Makoto Sato” and the music name “PINK” are extracted in step S102. It may be. Similarly, “<A> Makoto Sato <M> PINK” may be used, and what tag code is used as the identification code may be determined for each service provider.

Further, the identification code may be stored in the text of ID10 using the character code standard. For example, a control code such as “0x0a LF” (a character code indicating a line feed) or “0x0d CR” (a character code indicating a return) may be used as identification information. That is, if data “0x0a LF Makoto Sato 0x0d CRPINK” is stored in the text of ID10, the artist name “Makoto Sato” and the song name “PINK” may be extracted in step S102. . In this example, the character string immediately after “0x0a LF”, which is a character code indicating a line feed, is determined as an artist name, and the character string immediately after “0x0d CR”, which is a character code indicating return, is determined as a song name. Yes.
These character codes may be added before the character string as in the above example, or may be added after the character string. As in the above-described example, which character code is recognized as the identification code may be determined for each service provider.

  As described above, in the fourth embodiment, in the media content determination process, the content of the ID10 text is determined using the identification code. Accordingly, a service provider that distributes content information can store various information for each identification code in the text of ID10, and the vehicle-mounted device 10 can easily determine what the information indicates. . Therefore, it is possible to provide a more convenient operation screen when displaying content information determined to include multimedia content.

  FIG. 16A shows an example of the operation screen 120 when a list of multimedia contents is displayed using the search table T. In the example shown in FIG. 16A, information stored in the “artist name” field of the search table T and information stored in the “music name” field are displayed. As with the operation screen 90 in the first embodiment, the multimedia content displayed on the operation screen 120 can be played by an input from the input unit 1d.

  FIG. 16B shows an example of the operation screen 130 when a list of multimedia contents is displayed together with the image of ID10. As shown in FIG. 16B, the content information ID10 image stored in the search table T is referred to and stored in the “artist name” field and the “music name” field of the search table T. Are displayed on the operation screen 130 together with the information. Specifically, the information code stored in the “information code” field of the search table T is referred to, and the content information stored in the storage unit 1f refers to the image of the content information ID10 that matches the information code. Will be.

  In the present embodiment, it is possible to determine what information is stored in the text of ID10 by the identification code, so even if various information is stored in the text of ID10, the in-vehicle device 10 determines the text. can do. Therefore, the information displayed on the operation screen 130 is not limited to the example shown in FIG. For example, when the identification code indicating that the album name is stored is in the text of ID 10, the album name may be displayed on the operation screen 130.

The same display is performed when video data is stored as multimedia contents. That is, since the thumbnail of the video data is stored in the image of ID10 of the content information, it is displayed on the operation screen 130 together with the title of the video data.
Since the user of the vehicle-mounted device 10 can visually recognize both the image data and the character information as in the operation screen 130, the visibility when searching for the multimedia content desired by the user is improved.

  FIG. 17A shows an example of the operation screen 130 when a list of multimedia contents is displayed for each artist name together with the image of ID10. As shown in FIG. 17A, there are a plurality of records with the same artist name in the “artist name” field of the search table (hereinafter referred to as the search table Ta to distinguish the search table for displaying the operation screen 130). If stored, a list of song names can be displayed for each artist name.

  In the example shown in FIG. 17A, the artist name and the song name are displayed together with the image of ID10. However, the artist name, album name, and song name may be displayed. For example, when an ID code for identifying an artist name, an album name, and a song name is stored in the text of ID10, it is determined whether the artist name and the album name match, and the matching content information is extracted as a list. It can also be displayed. For example, when there is content information distributed from the center device 30 for each song included in an album of an artist from the center device 30, it is determined whether the artist name stored in the text of ID 10 of the content information matches the album name. Then, if it is displayed on the operation screen 130, the music of the album added one by one every week can be displayed as a list.

  FIG. 18 shows multimedia determination processing in the fourth embodiment for displaying the operation screen 130 (hereinafter referred to as multimedia content determination processing D in order to distinguish from the first to third embodiments). Show.

  As illustrated in FIG. 18, the control unit 4 of the vehicle-mounted device 10 determines whether or not the multimedia flag in the ID 10 of the distributed content information is on (step S181). If the multimedia content flag is on (step S181; YES), it is determined that the content information is content information including multimedia content, and it is determined whether or not an identification code is included in the content information (step S181). S182). Specifically, the determination is made based on whether or not an identification code is included in the text of ID10 of the content information.

  If it is determined that the content information includes an identification code (step S182; YES), the artist name and album name of the ID10 text identified by the identification code are the artist names of the records stored in the search table Ta. And the album name are discriminated (step S183). If it is determined that the artist name matches the album name (step S183; YES), the information of the ID 10 is stored in the search table Ta (step S184).

  On the other hand, if it is not determined that the content information includes an identification code (step S1702; NO), or if it is not determined that the artist name matches the album name (step S1703; NO), a search table different from the search table Ta (hereinafter referred to as “search table Ta”). , Information of ID10 is stored in the search table Tb). The search table Tb is a search table for displaying the operation screen 90 shown in FIG.

  As described above, according to the multimedia determination process D in the fourth embodiment, the multimedia flag is on, and the artist name and album name stored in the search table Tb and the text of ID10 are stored. When the content information matching the text identified by the identification code is received, the information stored in the text of the ID 10 is stored as a new record in the search table Tb. Therefore, when content information having the same artist name or album name displayed on the operation screen 140 is received, the information is added to the search table Tb as needed, and information to be displayed on the operation screen 140 is also added. .

FIG. 17B shows an example of the operation screen 150 on which a list of music and videos is displayed at the same time. As shown in FIG. 17B, when movie data is stored in the video of ID10 of the content information, the title name and the performer may be displayed together with the image related to the movie. In the present embodiment, it is possible to determine what information is stored in the text of ID10 by the identification code. Therefore, when data is stored in the video of ID10, the title name and the performer of the movie are stored. Can be specified and displayed as in the operation screen 150.
FIG. 17C shows an example of an operation screen 160 that can simultaneously display a list of music and videos and scroll the screen. As shown in FIG. 17C, when there are a large number of records stored in the search table T, the screen is scrolled to display information on the multimedia contents stored in the search table T. Can do.

  Further, in the multimedia determination process, content information for which the multimedia flag is turned on is stored in the search table T, so that a plurality of multimedia contents are displayed as in the operation screens 120 to 160. Even in this case, multimedia contents provided by different service providers can be displayed on the same operation screen instead of displaying multimedia contents for each service provider. That is, since the in-vehicle device 10 determines whether or not the received content information includes multimedia content and the operation screens 120 to 160 are generated by the on-vehicle device 10, the service providers that provide the content information are different. Even so, since the multimedia content can be searched for and played back on the same operation screen, the user of the vehicle-mounted device 10 can perform service business compared with the case where operation is performed on the operation screen provided by the service provider. Different operations are not required for each person.

The identification code and the operation screen shown in this embodiment are a preferred example of the present invention and are not limited to this.
In this embodiment, an example of using a “TAB” code, a tag code, and a control code as an identification code has been described. However, what information is stored in the text of ID10 may be identified, and other information is identified. It may be used as a code. For example, when a character code is used as an identification code, the character code may be an ASCII (American Standard Code for Information Interchange) code or a JIS (Japan Industrial Standard) code.

  The example of the operation screen when displaying the list of multimedia contents stored in the search table T on the display unit 1e is not limited to the examples shown in FIGS. For example, the genre information of the multimedia content is stored in the text of ID10, and the list may be displayed on the display unit 1e as a list for each genre.

  In addition, the present invention is not limited to the present embodiment, similar to the first embodiment.

It is a figure which shows the delivery system in this embodiment. It is a figure explaining the roadside area of the roadside apparatus of FIG. It is a figure which shows the functional structure of the onboard equipment of FIG. It is a figure which shows the functional structure of a center apparatus. It is a figure which shows an example of the data format of content information. It is a figure which shows an example of the header information of content information. It is an example of the screen transition displayed based on content information. It is a figure explaining the flow of processing in a distribution system. It is a figure explaining the flow of processing in a distribution system. It is a figure explaining the flow of the multimedia judgment process performed in the process in a delivery system. It is a figure which shows an example of the search table T in this Embodiment. It is an example of the operation screen for reproducing multimedia content, (a) is an example of a screen that displays a list using the search table T created by the multimedia determination processing of FIG. () Is a diagram showing an example of a screen during playback of multimedia content. It is an example of the operation screen for reproducing | regenerating a multimedia content, (a) shows an example of the operation screen in the case of displaying a text list, (b) is an example of the operation screen in the case of displaying an image list. Indicates. It is a figure explaining the flow of the multimedia judgment process performed in the process in the delivery system in 2nd Embodiment. It is a figure explaining the flow of the multimedia judgment process performed in the process in the delivery system in 3rd Embodiment. It is an example of the operation screen for reproducing a multimedia content, (a) is an example of the screen which displayed the text list using the search table T, (b) displayed the text and the image. It is a figure which shows an example of a screen. It is an example of the operation screen for reproducing multimedia contents, (a) is an example of a screen displaying images and text using the search table T, and (b) is displaying music and video. (C) is a diagram showing a screen in which music and video are displayed on a scrollable screen. It is a figure explaining the flow of the multimedia judgment process performed in the process in the delivery system in 4th Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Distribution system 10 Onboard equipment 1 Car navigation part 1d Input part 1e Display part 1f Storage part 3 DSRC part 3a DSRC control part 3b Communication part 3c Storage part M Uplink information storage area 4 Control part 20 Roadside radio apparatus 30 Center apparatus 31 Control part 34 Memory

Claims (9)

A vehicle-mounted device mounted in each of one or a plurality of vehicles is a distribution system that is connected to a center device that distributes content information via a roadside wireless device so that wireless communication is possible,
The center device distributes the content information including identification information for identifying whether or not to include a predetermined type of digital content via a roadside wireless device,
The in-vehicle device is
A distribution system comprising: control means for determining whether or not the content information distributed from the center device includes the identification information.   The distribution system according to claim 1, wherein the digital content identified by the identification information is multimedia content. A vehicle-mounted device that is wirelessly connected to a center device that distributes content information via a roadside device,
A vehicle-mounted device comprising control means for determining whether or not the content information distributed from the center device includes identification information for identifying whether or not multimedia content is included. Storage means for storing a search table for storing information for searching the content information including multimedia content;
4. The control unit according to claim 3, wherein when the distributed content information is determined to include multimedia content, the control unit stores information related to the content information in the search table stored in the storage unit. In-vehicle device. The content information includes information for determining a data type of multimedia content included in the content information,
The control unit stores information related to the content information in the search table stored in the storage unit according to a data type of multimedia content included in the distributed content information. 4. The vehicle-mounted device according to 4.   6. The information according to claim 5, wherein the information for determining the data type of the multimedia content included in the content information is information for determining whether the content information includes text data or image data. Onboard equipment. It further has a playback means for playing back the multimedia content,
The said control means makes the said reproduction | regeneration means reproduce | regenerate the said multimedia content corresponding to the information stored in the said search table memorize | stored in the said memory | storage means. The vehicle equipment as described in a term. A vehicle-mounted device mounted on each of one or a plurality of vehicles is a distribution method in which wireless communication is performed with a center device that distributes content information via a roadside wireless device,
The center device distributes the content information including identification information for identifying that the content information includes multimedia content via a roadside wireless device,
The in-vehicle device is
A distribution method comprising a control step of determining whether or not the content information distributed from the center device includes the identification information. A vehicle-mounted device that is connected to a center device that distributes content information via a roadside wireless device so that wireless communication is possible.
The program for functioning as a control means which judges whether the said content information delivered from the said center apparatus contains the identification information for identifying that a multimedia content is included.

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