KR102838267B1 - Apparatus and method for providing broadcasting services simultaneously - Google Patents

Abstract

A broadcast service simultaneous provision device configures two or more overlapping broadcast services to be transmitted simultaneously for a broadcast program having the same content, generates an SLT (Service List Table) for the two or more broadcast services, and transmits the two or more broadcast services together with the SLT information, wherein the SLT includes overlapping service identifier information indicating whether the two or more broadcast services are being broadcast simultaneously and information indicating whether the two or more overlapping broadcast services are services for a fixed TV or a mobile terminal.

Description

{APPARATUS AND METHOD FOR PROVIDING BROADCASTING SERVICES SIMULTANEOUSLY}

The present invention relates to a device and method for simultaneous provision of broadcast services, and more particularly, to a device and method for simultaneous provision of broadcast services which, when providing two or more broadcast services of the same program simultaneously with different video resolutions or qualities, enables displaying on a screen an appropriate broadcast service for fixed and moving viewers depending on the viewer's reception situation.

The domestic "Terrestrial UHDTV (Ultra High Definition Television) Broadcast Transmission and Reception Alignment" standard was established based on the US's next-generation terrestrial broadcasting standard, ATSC (Advanced Television Systems Committee) 3.0 technology, and based on this, the world's first domestic UHDTV broadcasting service is being provided, and new requirements are being derived according to the UHDTV broadcasting service model.

Although broadcasting is being conducted domestically, the current broadcasting terminals are not only fixed TVs with large screens fixed at home, but also mobile terminals with small screens such as tablets and smartphones. Accordingly, broadcasting companies may want to provide the same content program in two forms of UHD and HD media within one channel for users of fixed TVs as well as mobile terminals. If this type of broadcasting service is provided, fixed TVs and mobile terminals will each display two channels of UHD and HD media with the same content program. In the case of fixed TVs, viewers may make the mistake of watching low-quality HD media even though there is a high-quality UHD broadcasting program channel. In addition, mobile terminals may display UHD broadcasting program channels, but may not properly receive large-capacity UHD signals depending on network conditions, resulting in a problem where no media is played on the screen. Therefore, when simultaneous broadcasting is conducted for media with the same content, information that the terminal can process is required so that the appropriate broadcasting program can be provided to viewers depending on the viewer’s reception conditions, whether fixed or mobile.

The problem to be solved by the present invention is to provide a device and method for simultaneous provision of broadcast services, which enables displaying on a screen an appropriate broadcast program during fixed and mobile operation depending on the viewer's reception situation when simultaneous provision of broadcast programs of the same content in terrestrial UHDTV broadcast standards is performed during fixed and mobile operation.

According to one embodiment of the present invention, a method for simultaneously providing broadcast services through a broadcast network in a broadcast service simultaneous provision device is provided. The broadcast service simultaneous provision method includes the steps of configuring two or more duplicate broadcast services to be simultaneously transmitted for a broadcast program having the same content, the step of generating an SLT (Service List Table) for the two or more broadcast services, and the step of transmitting the two or more broadcast services together with the SLT information, wherein the SLT includes duplicate service identifier information indicating whether the two or more broadcast services are being simultaneously broadcast and information indicating whether the two or more duplicate broadcast services are services for a fixed TV or a mobile terminal.

The above duplicate service identifier information may include at least one of whether the broadcast program has duplicate services, the number of duplicate services for the broadcast program, a broadcast stream identifier for the duplicate service, and an identifier for the duplicate service.

Information indicating whether the above duplicate broadcast service is a service for fixed TV or a service for mobile terminals may include a target receiver type value for the broadcast service.

The target receiver type value for the above broadcast service can be provided through a performance code value.

According to another embodiment of the present invention, a broadcast service simultaneous providing device for simultaneously providing two or more broadcast services for the same broadcast program through a broadcast network is provided. The broadcast service simultaneous providing device includes a processor for configuring two or more broadcast services for the same broadcast program and generating an SLT (Service List Table) for the two or more broadcast services, and a transceiver for transmitting the two or more broadcast services together with the SLT information through a broadcast network, wherein the SLT includes duplicate service identifier information indicating whether the two or more broadcast services are being broadcast simultaneously and receiver type information of the two or more duplicate broadcast services.

The above processor can provide the receiver type information through a receiver type value defined according to whether the receiver type is a fixed TV or a mobile terminal.

The above processor can provide the receiver type information through a performance code value defined according to whether the receiver type is a fixed TV or a mobile terminal.

The above duplicate service identifier information may include at least one of whether the broadcast program has duplicate services, the number of duplicate services for the broadcast program, a broadcast stream identifier for the duplicate service, and an identifier for the duplicate service.

According to another embodiment of the present invention, a method for receiving two or more duplicate broadcast services simultaneously transmitted through a broadcast network in a broadcast service receiving device is provided. The broadcast service receiving method includes the steps of receiving an SLT (Service List Table) for each broadcast service, a step of parsing the SLT for each broadcast service to determine whether the received broadcast service is being simultaneously broadcasted in duplicate, a step of determining receiver type information of a corresponding broadcast service in the SLT for each broadcast service if the broadcast service is being simultaneously broadcasted in duplicate, and a step of displaying one broadcast service suitable for the broadcast service receiving device among the two or more duplicate broadcast services by using the receiver type information.

The above SLT may include duplicate service identifier information indicating whether two or more broadcast services are being broadcast simultaneously and receiver type information of the two or more duplicate broadcast services.

The step of checking the receiver type information of the corresponding broadcast service may include a step of checking the receiver type information through a receiver type value defined according to whether the receiver type of the corresponding broadcast service is a fixed TV or a mobile terminal.

The step of checking the receiver type information of the corresponding broadcast service may include a step of checking the receiver type information through a performance code value defined according to whether the receiver type of the corresponding broadcast service is a fixed TV or a mobile terminal.

According to an embodiment of the present invention, when a broadcast program with the same content is simultaneously serviced in fixed and mobile mode in a terrestrial UHDTV broadcast standard, information that the program is being broadcasted simultaneously and overlappingly is provided, so that a receiving device can use this information to display a broadcast program suitable for fixed and mobile mode on a screen according to the reception situation. In other words, the same broadcast program can be serviced to fixed TV and mobile terminals simultaneously without causing confusion to viewers.

FIG. 1 is a conceptual diagram of a fixed and mobile simultaneous broadcasting service in terrestrial UHDTV broadcasting according to an embodiment of the present invention.
FIG. 2 is a drawing showing an SLT defined in a terrestrial UHDTV broadcasting standard according to an embodiment of the present invention.
FIG. 3 is a diagram illustrating an SLT providing an ATSC 3.0 duplicate service delimiter according to an embodiment of the present invention.
FIG. 4 is a diagram illustrating an SLT providing an ATSC 3.0 duplicate service delimiter according to another embodiment of the present invention.
FIG. 5 is a diagram showing the code values of serviceReceptionType shown in FIG. 4. FIG. 6 is a diagram showing an SLT that provides an ATSC 3.0 duplicate service identifier using service performance information according to another embodiment of the present invention.
Figure 7 is a diagram showing performance code values defined in the existing SLT.
FIG. 8 is a diagram showing performance code values for which a receiver type is defined according to an embodiment of the present invention.
Figure 9 is a flowchart illustrating a method for simultaneous provision of broadcast services according to an embodiment of the present invention.
FIG. 10 is a drawing showing a broadcast service receiving method according to an embodiment of the present invention.
FIG. 11 is a drawing showing a device for simultaneous provision of broadcast services according to an embodiment of the present invention.
FIG. 12 is a drawing showing a broadcast service receiving device according to an embodiment of the present invention.

Hereinafter, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily practice the present invention. However, the present invention may be implemented in various different forms and is not limited to the embodiments described herein. In addition, in order to clearly describe the present invention in the drawings, parts that are not related to the description are omitted, and similar parts are assigned similar drawing reference numerals throughout the specification.

Throughout the specification and claims, whenever a part is said to "include" a certain component, this does not exclude other components, but rather includes other components, unless otherwise stated.

Now, a device and method for simultaneous provision of broadcast services according to an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a conceptual diagram of a fixed and mobile simultaneous broadcasting service in terrestrial UHDTV broadcasting according to an embodiment of the present invention.

Referring to Figure 1, a broadcast service providing device can provide two or more broadcast services through a broadcast network by providing the same program in one channel with different video resolutions or qualities. For example, a broadcast service providing device can provide the same program (professional baseball) in UHD resolution and HD resolution at the same time, and a service can be provided that allows viewing of UHDTV on a fixed TV receiver and HDTV on a mobile terminal.

The terrestrial UHDTV broadcast standard provides signaling information on the service list that indicates what program is currently being broadcast in the SLT (Service List Table). Therefore, in the embodiment of the present invention, when a broadcast program with the same content is simultaneously serviced in fixed and mobile form based on ATSC 3.0, information indicating that the program is being broadcasted simultaneously and redundantly is added to the SLT to resolve redundancy between ATSC 3.0 services.

In the current terrestrial UHDTV broadcasting standard following ATSC 3.0, SLT is defined as shown in Fig. 2.

FIG. 2 is a drawing showing an SLT defined in a terrestrial UHDTV broadcasting standard according to an embodiment of the present invention.

Referring to Fig. 2, SLT does not provide information on other services corresponding to simultaneous broadcasting for each service. Therefore, in the embodiment of the present invention, as shown in Fig. 3, information that a broadcast program with the same content is being broadcast simultaneously and repeatedly is additionally defined in the existing SLT.

FIG. 3 is a diagram illustrating an SLT providing an ATSC 3.0 duplicate service delimiter according to an embodiment of the present invention.

Referring to FIG. 3, when a broadcast service providing device provides fixed and mobile broadcast programs with the same content simultaneously, it additionally defines duplicate service identifier information (SimulcastServiceInfo, SimulcastService, @bsid, @serviceid) to the existing SLT to indicate whether the programs are being broadcast simultaneously and repeatedly. SimulcastServiceInfo indicates whether the service has another duplicate ATSC 3.0 service. SimulcastService indicates the number of duplicate ATSC 3.0 services of the service. @bsid indicates a broadcast stream identifier (BSID) for the duplicate ATSC 3.0 service. If the duplicate ATSC 3.0 service belongs to the same broadcast stream, this property may not be used. @serviceid indicates an identifier for the duplicate ATSC 3.0 service.

The receiving device can determine whether the service is being broadcast simultaneously and repeatedly, the number of services being broadcast simultaneously and repeatedly, and the corresponding broadcast stream identifier and service identifier by parsing the SLT.

In this way, the method of adding information that a broadcast program with the same content is being broadcast simultaneously and repeatedly to the existing SLT provides only information on whether there is a duplicate service based on ATSC 3.0 for the corresponding service in the SLT, and if there is a duplicate service, the corresponding BSID and service information. Accordingly, the receiving device cannot know which of the two or more duplicate services is a service for fixed TV and which is a service for mobile terminals, and can be predicted and processed based on information such as the media resolution or bit rate of the corresponding service received after the SLT.

In another embodiment of the present invention, we propose a method of adding information specifying whether a duplicate service is a service for fixed TV or a service for mobile terminals, in addition to the signaling information proposed above in SLT.

FIG. 4 is a diagram showing an SLT providing an ATSC 3.0 duplicate service identifier according to another embodiment of the present invention, and FIG. 5 is a diagram showing code values of serviceReceptionType shown in FIG. 4.

As shown in Fig. 4, the broadcast service simultaneous provision device further includes receiver type information (@serviceReceptionType) as duplicate service information in addition to the existing SLT. The receiver type information provides information in the form of a receiver that indicates which of two or more duplicated services is a service for fixed TV and which is a service for mobile terminals.

The receiver type information (@serviceReceptionType) in the service entry indicates the receiver type information for this service (serviceId). And if there is a duplicate service for the same program as this service (serviceId), the receiver type information for the duplicate service (simulcastService) is indicated in the receiver type information (@serviceReceptionType) in the duplicate service (SimulcastService) entry.

The receiver type information (@serviceReceptionType) indicates the target receiver type of the corresponding service, and its value is defined as shown in Fig. 5.

For example, if a service (serviceId) is a UHD-grade video service targeting a fixed TV as a receiver, the broadcast service simultaneous provision device displays information indicating a fixed TV in the receiver type information (@serviceReceptionType) in the service (service) entry. If the broadcast service simultaneous provision device provides a video service for the same program as this service (serviceId) to a mobile terminal, it provides duplicate service information, and in this case, displays information indicating a mobile terminal in the receiver type information (@serviceReceptionType) in the duplicate service (SimulcastService) entry.

FIG. 6 is a diagram illustrating an SLT that provides an ATSC 3.0 duplicate service identifier using service performance information according to another embodiment of the present invention.

Referring to FIG. 6, a broadcast service simultaneous provision device can provide information indicating whether the service is for a fixed TV or a mobile terminal as performance information (@svcCapabilities) required for content decoding or meaningful expression of the corresponding service in the existing SLT.

The broadcast service simultaneous provision device additionally defines duplicate service identifier information (SimulcastServiceInfo, SimulcastService, @bsid, @serviceid) and capability information (@svcCapabilites) to the existing SLT. The capability information (@svcCapabilites) provides a capability code value that indicates the reception type of the duplicate ATSC 3.0 service.

As described above, the capability information (@svcCapabilites) item in the service item can indicate the receiver type information for this service (serviceId). And if there is a duplicate service for the same program as this service (serviceId), the receiver type information for the duplicate service (simulcastService) can be displayed in the capability information (@svcCapabilites) item in the duplicate service (SimulcastService) item.

The values of performance information (@svcCapabilites) currently defined in SLT are defined as in Figure 7.

FIG. 7 is a drawing showing performance code values defined in an existing SLT, and FIG. 8 is a drawing showing performance code values defined in a receiver type according to an embodiment of the present invention.

Referring to Figure 7, the performance code values in the existing SLT are defined by classifying them into six categories: Download Protocols, FEC Algorithms, Wrapper/Archive Formats, Compression Algorithms, Media Types, and Internet Link.

In an embodiment of the present invention, as illustrated in FIG. 8, a new category called Reception Types is defined as a performance code value, and performance code values according to Reception Types are defined.

The broadcast service simultaneous provision device defines the reception type information of the corresponding service in the performance code value that ATSC leaves as “reserved” for the future, as shown in Fig. 7, thereby enabling it to know whether the service is for a fixed TV or a mobile terminal.

That is, it is possible to determine whether the service is for fixed TV or mobile terminals by the performance code value defined as the reception type. For example, if the performance code value is "0x0700", the receiver type of the service may indicate fixed TV, and if the performance code value is "0x0701", the receiver type of the service may indicate mobile terminals.

Figure 9 is a flowchart illustrating a method for simultaneous provision of broadcast services according to an embodiment of the present invention.

Referring to Figure 9, the broadcast service simultaneous provision device configures two or more broadcast services with different resolutions or qualities in order to simultaneously service broadcast programs with the same content in a fixed and mobile manner (S910). For example, the broadcast service simultaneous provision device can configure broadcast services with UHD resolution and HD resolution for broadcast programs with the same content.

The broadcast service simultaneous provision device generates SLT information for two or more broadcast services to be transmitted simultaneously through a broadcast network (S920). At this time, the broadcast service simultaneous provision device includes information indicating that two or more broadcast services are being broadcast simultaneously in the existing SLT and information indicating whether the broadcast services being provided simultaneously are services for fixed TV or services for mobile terminals.

A device for simultaneously providing broadcast services transmits two or more broadcast services simultaneously through a broadcast network along with SLT information (S930).

FIG. 10 is a drawing showing a broadcast service receiving method according to an embodiment of the present invention.

Referring to FIG. 10, a broadcast service receiving device receives two or more broadcast services for a broadcast program with the same content and SLT information for each broadcast service (S1010).

The broadcast service receiving device parses the SLT information for each received broadcast service to check whether the received broadcast service is being broadcasted simultaneously (S1020).

When the broadcast service receiving device is simultaneously broadcasting the broadcast service in duplicates, it checks the receiver type information in the SLT information for each broadcast service (S1030), and selects and displays one broadcast service suitable for it among two or more duplicate broadcast services using the receiver type information (S1040).

In this way, even if simultaneous broadcast services are provided for fixed TVs and mobile terminals for the same broadcast program content, the broadcast service receiving device can select an appropriate broadcast service based on the reception status of the broadcast service receiving device through the receiver type information in the SLT information.

FIG. 11 is a drawing showing a device for simultaneous provision of broadcast services according to an embodiment of the present invention.

Referring to FIG. 11, the broadcast service simultaneous provision device (100) includes a processor (110), a transmitter/receiver (120), and a memory (130).

The processor (110) provides two or more broadcast services simultaneously by changing the video resolution or quality of the same broadcast program within a channel. In addition, the processor (110) adds information indicating that the corresponding program is being broadcast simultaneously and repeatedly to the SLT, thereby enabling the receiver to receive an appropriate broadcast service during fixed and mobile operation depending on the reception situation. As described in FIGS. 3, 4, 5, 6, and 8, the processor (110) adds information indicating that a broadcast program with the same content is being broadcast simultaneously and repeatedly to the existing SLT, and indicates whether the corresponding broadcast program is a service for fixed TV or a service for mobile terminals. The processor (110) can implement the operation and function of the broadcast service simultaneous provision device described in FIGS. 3, 4, 5, 6, and 8 by executing instructions stored or loaded in the memory (130). The processor (110) may mean a central processing unit (CPU), a graphics processing unit (GPU), or a dedicated processor on which methods according to an embodiment of the present invention are performed.

The transmitter/receiver (120) is connected to the processor (110) and transmits broadcast signals including two or more broadcast services and SLT.

The memory (130) is connected to the processor (110) and stores various information for driving the processor (110). The memory (130) stores instructions to be performed by the processor (110) or loads instructions from a storage device (not shown) and temporarily stores them. The memory (230) may include a ROM (read-only memory), a RAM (random access memory), a flash memory, a memory card, a storage medium, and/or other storage devices.

FIG. 12 is a drawing showing a broadcast service receiving device according to an embodiment of the present invention.

Referring to FIG. 12, the broadcast service receiving device (200) includes a processor (210), a transceiver (220), and a memory (230).

When the processor (210) receives two or more broadcast services for the same broadcast program in one channel and an SLT for the same, as described in FIG. 10, the processor parses the SLT to confirm that broadcast programs with the same content are being broadcast simultaneously and repeatedly, and selects and provides an appropriate broadcast service according to the reception status of the broadcast service receiving device (200) based on the receiver type information of each broadcast service in the SLT. The processor (210) can execute instructions stored or loaded in the memory (230) to implement the operation and function of the broadcast service receiving device described in FIG. 10. The processor (210) may mean a central processing unit (CPU), a graphics processing unit (GPU), or a dedicated processor on which methods according to an embodiment of the present invention are performed.

The transceiver (220) is connected to the processor (210) and receives broadcast signals including two or more broadcast services and SLT.

The memory (230) is connected to the processor (210) and stores various information for driving the processor (210). The memory (230) stores instructions to be performed by the processor (210) or loads instructions from a storage device (not shown) and temporarily stores them. The memory (230) may include a ROM (read-only memory), a RAM (random access memory), a flash memory, a memory card, a storage medium, and/or other storage devices.

Although the embodiments of the present invention have been described in detail above, the scope of the rights of the present invention is not limited thereto, and various modifications and improvements made by those skilled in the art using the basic concept of the present invention defined in the following claims also fall within the scope of the rights of the present invention.

Claims (13)

A method for simultaneously providing broadcast services through a broadcast network from a broadcast service simultaneous provision device,
A step for configuring two or more overlapping broadcast services to be transmitted simultaneously for broadcast programs with the same content;
A step of generating an SLT (Service List Table) for the above two or more broadcasting services, and
Step of transmitting two or more broadcast services together with the above SLT information
Including,
The above SLT includes duplicate service identifier information indicating whether two or more broadcast services are being broadcast simultaneously and receiver type information of the two or more duplicate broadcast services.
The above receiver type information is provided through the receiver type value for the corresponding broadcast service,
A method for simultaneous provision of broadcasting services, wherein the above receiver type value includes a value defined according to whether the receiver type is a fixed TV or a mobile terminal. In paragraph 1,
A method for simultaneous provision of broadcast services, wherein the above-mentioned duplicate service identifier information includes at least one of whether the broadcast program has duplicate services, the number of duplicate services for the broadcast program, a broadcast stream identifier for the duplicate service, and an identifier for the duplicate service. delete In paragraph 1,
The target receiver type value for the above broadcast service is a method for simultaneous provision of broadcast services through a performance code value. In Article 4,
A method of simultaneous provision of broadcast services in which performance code values are defined according to receiver type as a performance category. A broadcast service simultaneous provision device that provides two or more broadcast services for the same broadcast program simultaneously through a broadcast network.
A processor that configures two or more broadcast services for the same broadcast program and generates an SLT (Service List Table) for the two or more broadcast services, and
Including a transmitter and receiver that transmits the two or more broadcast services through a broadcast network together with the above SLT information,
The above SLT includes duplicate service identifier information indicating whether two or more broadcast services are being broadcast simultaneously and receiver type information of the two or more duplicate broadcast services.
The above receiver type information is provided through the target receiver type value for the corresponding broadcast service,
The above target receiver type value includes a value defined according to whether the receiver type is a fixed TV or a mobile terminal.
The above processor is a broadcast service simultaneous provision device that provides the above receiver type information.
delete In Article 6,
The above processor is a broadcast service simultaneous provision device that provides the receiver type information through a performance code value defined according to whether the receiver type is a fixed TV or a mobile terminal. In Article 6,
A broadcast service simultaneous provision device, wherein the above duplicate service identifier information includes at least one of whether the broadcast program has duplicate services, the number of duplicate services for the broadcast program, a broadcast stream identifier for the duplicate service, and an identifier for the duplicate service. A method for receiving two or more overlapping broadcast services transmitted simultaneously through a broadcast network from a broadcast service receiving device,
Step of receiving SLT (Service List Table) for each broadcast service;
A step of parsing the SLT for each of the above broadcast services to check whether the received broadcast service is being broadcasted simultaneously.
In case the above broadcast services are being broadcasted simultaneously and repeatedly, a step for checking the receiver type information of the corresponding broadcast service within the SLT for each of the above broadcast services, and
A step of displaying one broadcast service suitable for the broadcast service receiving device among the two or more overlapping broadcast services using the above receiver type information.
Including, but not limited to,
The above SLT includes duplicate service identifier information indicating whether two or more broadcast services are being broadcast simultaneously and receiver type information of the two or more duplicate broadcast services.
The above receiver type information is provided through the receiver type value for the corresponding broadcast service,
A method for receiving a broadcast service, wherein the above receiver type value includes a value defined according to whether the receiver type is a fixed TV or a mobile terminal.
delete delete In Article 10,
A method for receiving a broadcast service, wherein the step of checking the receiver type information of the corresponding broadcast service includes the step of checking the receiver type information through a performance code value defined according to whether the receiver type of the corresponding broadcast service is a fixed TV or a mobile terminal.