JP6724226B2 - Broadcast signal receiving method - Google Patents

Description

Embodiments of the present invention relate to a broadcast signal receiving method.

From the Ministry of Internal Affairs and Communications in July 2015, "Follow-up meeting on 4K/8K roadmap
Second Interim Report" was published. The roadmap of this interim report is a roadmap for starting commercialization (main broadcasting) of 4K broadcasting and 8K broadcasting in BS broadcasting and CS broadcasting in 2018. The characteristics of 4K and 8K broadcasting are not only video resolution, but also color gamut expansion, gradation expansion, frame rate expansion, and HDR (High Dynamic Range), which is an expansion of the recently expressed luminance range. To be

As a technical standard for HDR broadcasting, a public comment was solicited as a report from the Broadcasting System Committee of the Information and Communications Council of the Ministry of Internal Affairs and Communications on April 8, 2016 (http://www.soumu.go.jp/menu_news/s -news/01ryutsu08_02000150.html), as shown in Table 1 in the report, the definition of broadcasting by contents having an expression range of HDR luminance is made even in so-called 2K broadcasting of 1080i, 1080p.

ARIB STD-B10 Version 5.9 Revised September 29, 2016, General Association of Radio Industries and Businesses ARIB TR-B14 Version 6.2 Revised on July 6, 2016, General Incorporated Association "BS/Broadband CS Digital Broadcasting Operation Regulations Technical Data" ARIB TR-B15 7.1 version Revised July 6, 2016, General Incorporated Association "Video Coding, Audio Coding and Multiplexing Standards for Digital Broadcasting" ARIB TR-B32 Version 3.8 Part 1 Appendix 5 Revised July 6, 2016, General Incorporated Association ITU-T H.265(2013)|ISO/IEC 23008-2:2013:High efficiency video coding

Therefore, even in 2K broadcasting, it is expected that a broadcasting service will be realized with contents having an HDR luminance expression range.

The present embodiment is a broadcast signal receiving method for receiving a broadcast signal in which a video signal, an audio signal and a transmission control signal are multiplexed,
The video signal of the transmission characteristic information inserted video usability information to movies image stream that specifies the dynamic range: disposed (Video_usablity_information VUI), the transmission control signal is arranged in a position different from the video stream, the transmission In the control signal, a video decoding control descriptor including information corresponding to the transmission characteristics in the VUI, a component descriptor in which information for identifying the aspect ratio of the image and information indicating whether the image is HDR content are arranged are multiplexed. Receive the converted broadcast signal,
Obtain a multiplexed stream by demodulating the received signal,
Separating the video stream and the transmission control signal from the multiplexed stream,
Decoding the video stream to obtain the video signal,
The dynamic range of the video signal is grasped from the transmission characteristic information arranged in the VUI in the video stream,
It is possible to provide a broadcast signal receiving method characterized in that the aspect ratio of a video and whether the video is an HDR content are grasped from the component descriptor of the transmission control signal.

FIG. 1 is a diagram conceptually showing the direction of evolution of a video format. FIG. 2 is a diagram showing a configuration example of the entire system of a broadcasting station and a receiver to which this embodiment is applied. FIG. 3 is a diagram showing a schematic configuration diagram of a broadcasting station. FIG. 4 is a diagram for explaining main streams and information in a broadcast wave transmission path. FIG. 5 is a diagram showing an example of a schematic configuration diagram of a receiver to which the present embodiment is applied. FIG. 6A is a diagram showing types of tables used when transmitting program identification information and program arrangement information. FIG. 6B is a diagram showing an example of the format of the table. FIG. 7A is a diagram showing bit assignment of the service list descriptor. FIG. 7B is a diagram showing the bit assignment of the service format type in the service list descriptor. FIG. 7C is a diagram showing the bit assignments of the service type classification shown in FIG. 7B when operating for terrestrial digital television. FIG. 7D is a diagram showing, among the bit assignments of the service format type shown in FIG. 7B, bit assignments when operating for BS/broadband CS digital broadcasting. FIG. 8A is a diagram showing an example of bit assignment when the service format type is extended when the service format type is used as the information designating the dynamic range of the content in the first embodiment. FIG. 8B is a diagram showing an example of bit assignment when the extension of the bit assignment of the service format type shown in FIG. 8A is operated for terrestrial digital television. FIG. 8C is a diagram showing an example of bit assignment when the extension of the bit assignment of the service format type shown in FIG. 8A is operated for BS/broadband CS digital broadcasting. FIG. 9A is a diagram showing an example of a processing flow of the broadcast wave transmission side in the first embodiment. FIG. 9B is a diagram showing an example of a processing flow on the receiving side of the broadcast wave in the first embodiment. FIG. 9C is a diagram showing another example of the processing flow on the reception side of the broadcast wave in the first embodiment. FIG. 10A is a diagram showing bit assignment of a video decoding control descriptor. FIG. 10B is a diagram showing bit assignment of transfer characteristics in the video decoding control descriptor. FIG. 10C is a diagram showing bit assignments when the video decoding control descriptor shown in FIG. 10A is used for terrestrial digital television. FIG. 10D is a diagram showing bit assignment when the video decoding control descriptor shown in FIG. 10A is used for BS/broadband CS digital broadcasting. FIG. 11A adds a transfer characteristic field to the video decoding control descriptor operated for terrestrial digital television when the transfer characteristic is used as the information designating the dynamic range of the content in the second embodiment. FIG. 7 is a diagram showing an example of bit assignments of a video decoding control descriptor in the case. 11B is a diagram showing an example of bit assignments of transfer characteristics added to the video decoding control descriptor shown in FIG. 11A. FIG. 11C shows a transfer characteristic field in the video decoding control descriptor operated for BS/broadband CS digital broadcasting when the transfer characteristic is used for the information designating the dynamic range of the content as the second embodiment. It is a figure which shows an example of the bit assignment of a video decoding control descriptor at the time of adding. 11D is a diagram showing an example of bit assignment of transfer characteristics added to the video decoding control descriptor shown in FIG. 11C. FIG. 12 is a diagram showing bit assignments of transfer characteristics in a VUI for video coding defined in Non-Patent Document 5. FIG. 13A is a diagram showing an example of a processing flow of the broadcast wave transmission side in the second embodiment. FIG. 13B is a diagram showing an example of a processing flow on the receiving side of the broadcast wave in the second embodiment. FIG. 13C is a diagram showing another example of the processing flow on the receiving side of the broadcast wave in the second embodiment. FIG. 13D is a diagram showing another example of the processing flow on the reception side of the broadcast wave in the second embodiment. FIG. 13E is a diagram showing an example of a processing flow of the broadcast wave transmission side (video encoding side) in the second embodiment. FIG. 13F is a diagram showing an example of a processing flow on the reception side (video decoding side) of the broadcast wave in the second embodiment. FIG. 13G is a diagram showing another example of the processing flow on the receiving side of the broadcast wave in the second embodiment. FIG. 14A is a diagram showing a format of a component descriptor. FIG. 14B is a diagram showing bit assignments of component contents and component types in the component descriptor. FIG. 14C is a diagram showing the bit assignment of the component types in the case of operating for terrestrial digital television among the types of the component types shown in FIG. 14B. FIG. 14D is a diagram showing bit assignment of component types when operating for BS/broadband CS digital broadcasting among the types of component types shown in FIG. 14B. FIG. 15A is a diagram showing an example of bit assignment when the component content and the component type are expanded when the component content and the component type are used as the information designating the dynamic range in the third embodiment. FIG. 15B is a diagram showing an example of a case where the extension of the bit assignment of the component type shown in FIG. 15A is operated for terrestrial digital television. FIG. 15C is a diagram showing an example of operating the bit assignment extension of the component type shown in FIG. 15A for BS/broadband CS digital broadcasting. FIG. 16A is a diagram showing an example of a processing flow of the broadcast wave transmission side in the third embodiment. FIG. 16B is a diagram showing an example of a processing flow on the reception side of the broadcast wave in the third embodiment. FIG. 16C is a diagram showing another example of the processing flow on the receiving side of the broadcast wave in the third embodiment. FIG. 17A is a diagram showing a format of a content descriptor. FIG. 17B is a diagram showing types of content descriptor genre 1 (content_nibble_level_1). FIG. 17C is a diagram showing types of content descriptor genre 2 (content_nibble_level_2). FIG. 17D is a diagram showing another type of content descriptor genre 2 (content_nibble_level_2). FIG. 18A is a diagram showing an example of bit assignment when genre 1 is extended when genre 1 is used as information for designating a dynamic range of content in the third embodiment. FIG. 18B is a diagram showing an example of bit assignments when the genre 2 is extended when the genre 2 is used as the information designating the dynamic range of the content in the third embodiment. FIG. 18C is a diagram showing another example of the bit assignment when the genre 2 is extended when the genre 2 is used as the information designating the dynamic range of the contents in the third embodiment. FIG. 19A is a diagram showing a state of ES_PID described in the elementary_PID field of the PMT for each event. FIG. 19B is a diagram showing a state of ES_PID described in the elementary_PID field of the PMT for each event when the event is shared. FIG. 20A is an example of contents displayed on the display screen when the 12-position list is created in the receiver. FIG. 20B is another example of the contents displayed on the display screen when creating the 12-position list in the receiver. FIG. 20C is another example of the contents displayed on the display screen when the 12-position list is created in the receiver. FIG. 21A is an example of display content indicating that the program displayed on the display 220 is an HDR content broadcast. FIG. 21B is an example of display contents for displaying whether the program displayed on the display 220 is HDR content broadcast or SDR content broadcast. FIG. 21C is another example of the display content that displays whether the program displayed on the display 220 is HDR content broadcast or SDR content broadcast. FIG. 21D is another example of the display content that displays whether the program displayed on the display 220 is HDR content broadcast or SDR content broadcast. FIG. 22A is an example of the display content that displays whether the program displayed on the display 220 in the program including a plurality of program data is the HDR content broadcast or the SDR content broadcast table. FIG. 22B is another example of the display content that displays whether the program displayed on the display 220 in the program including a plurality of program data is the HDR content broadcast or the SDR content broadcast table. FIG. 23 is an example of the display contents of the program guide in which the types of the HDR broadcast/SDR broadcast guide are displayed. FIG. 24A is an example of the display contents of the program guide when the user selects “Great Adventure of High Vision” 2302 of the program guide shown in FIG. 23. FIG. 24B is another example of the display contents of the program guide when the user selects the “high-definition adventure” 2302 of the program guide shown in FIG. 23. FIG. 25A is an example of the display contents of the recording list. FIG. 25B is another example of the display contents of the recording list.

Hereinafter, embodiments will be described with reference to the drawings.

First, an outline of the idea of this embodiment will be described. FIG. 1 is a diagram showing the direction of evolution of a video format. The direction of evolution is broadly divided into the evolution of resolution and the evolution of expression range. The evolution of resolution has three directions of evolution: evolution of two-dimensional resolution (plane), evolution of three-dimensional resolution ( gradation ) and evolution of four-dimensional resolution (frame rate). The other direction of evolution, the evolution of the expression range, has two directions: the evolution of the color expression range and the evolution of the luminance expression range.

In recent years, the evolution of video formats has been preceded by the evolution of resolution, but the emphasis is also on the evolution of the range of expression.

Further, in the field of creating contents (also called programs), the creation of 2K broadcasting contents is the mainstream, but contents having a brightness expression range of SDR (Standard Dynamic Range) in 2K broadcasting contents (hereinafter referred to as SDR contents). It is becoming easier to simultaneously create content having an expression range of luminance of HDR and HDR (hereinafter referred to as HDR content).

There are two methods for realizing HDR, an HLG (Hybrid Log-Gamma) method and a PQ (Perceptual Quantization) method, and the HLG method is a method adopted in 4K broadcasting/8K broadcasting. The HLG method is characterized by backward compatibility, but when displaying HDR content (HLG method) on a display that supports only SDR content, the expected display is not affected at all.

Therefore, when introducing HDR (HLG method) contents in 2K broadcasting, HDR (HLG method) for 2K broadcasting can be applied even to a receiver compatible with 4K broadcasting without affecting existing receivers dedicated to 2K broadcasting. It is desired that the content is recognized correctly.

Therefore, the present embodiment realizes the broadcasting of HDR content in 2K broadcasting by expanding the processing for the broadcast waves on the transmitting side and the receiving side.

FIG. 2 is a diagram showing a configuration example of the entire digital broadcasting system to which the present embodiment is applied.

The broadcasting station 200 includes a broadcasting station server 201, a first security function 202, and a first basic function 203. The first basic function 203 is a basic function of the broadcasting station 200, which encodes and multiplexes video signals and audio signals of programs to be broadcast, and broadcasts signals (this broadcasting signal is BS broadcasting, CS broadcasting, It may be by any broadcast wave such as terrestrial digital television broadcasting) with the function of sending. The broadcasting station 200 can also send a digital broadcasting signal, application control information, a transmission control signal that is control information related to content display, and the like as broadcasting signals.

The broadcast station server 201 is an area in which metadata such as program titles, program IDs, program outlines, casts, broadcast dates and times, and other data are stored in advance so as to be transmitted to receivers by broadcast signals.

The first security function 202 can set the protection of the content (program) included in the broadcast wave transmitted by the broadcast station.

The receiver 210 includes a digital broadcast receiving function (second basic function 211), a second security function 212, an API 213, and an application management function 214, and receives a broadcast signal to receive various broadcast programs and various service information. can do.

The second basic function 211 is a basic function of the receiver, receives a broadcast wave transmitted from the broadcasting station 200, and is a video signal (also referred to as a video stream) which is a broadcast signal included in the broadcast wave, It has a function of separating a control signal such as an audio signal (also referred to as an audio stream) and an accompanying transmission control signal, and decoding a video signal and an audio signal and analyzing a control signal such as a transmission control signal.

In addition, the second basic function 211 is to connect to peripheral devices connected to the receiver 210, for example, the display 220, an HDD (HradDisk Drive) 230 bound to the display 220, removable media 240, and a smartphone 250. It also manages the sending and receiving of data.

The second security function 212 reads the transmission control signal analyzed by the second basic function 211 and analyzes the information related to the protection of the program set by the first security function 202 of the broadcasting station 200 included therein. I do.

The API 213 is an I/F for the second basic function 211, the application management function 214, and the application 215 to operate in cooperation with each other.

The application management function 214 has a function of managing the application 215, and operates in cooperation with the application 215 via the second basic function 211 and the API 213. The application management function 214 includes a function of a user interface and has a function of controlling a screen displayed on the display 220, for example.

The application 215 is an application that operates in cooperation with the second basic function 211 and the application management function 214, and can be downloaded/updated by the user or the receiver 210 sequentially via a network (not shown). .. These updates can improve the usability of the user who uses the receiver 210.

The display 220 has a speaker 221 built-in, and displays the video signal decoded by the second basic function 211 in the display area and outputs the audio signal to the speaker 221. The speaker 221 built in the display 220 may be an external speaker connected by an I/F such as USB.

FIG. 3 schematically shows the main configuration of the broadcasting station 300 (corresponding to 200 in FIG. 2). The broadcasting station 300 generates attached data for generating control data such as a video encoder 301, an audio encoder 302, a caption encoder 303, and other transmission control signals, service data, application control information for controlling the application 215 operating in the receiver 210, and the like. The unit 304 is provided. In the broadcasting station 300, a broadcasting station server 311 (corresponding to 201 in FIG. 2), a first security function 312 (corresponding to 202 in FIG. 2), and a transmitting/receiving unit 313 are linked. The video encoder 301, the audio encoder 302, the caption encoder 303, the attached data generating unit 304, the multiplexing unit 305, the transmitter 306, and the transmitting/receiving unit 313 are collectively referred to as a first basic function 310 (corresponding to 203 in FIG. 2).

The transmission control signal generated by the attached data generation unit 304 includes program selection information called program specific information (PSI: Program Specific Information) and program arrangement information (SI: Service Information) defined in Non-Patent Document 1, for example. It includes various types of information defined for this purpose and various types of control information defined for improving the convenience of program selection.

In the present embodiment, the broadcasting of HDR content in 2K broadcasting is realized by expanding the program specifying information and the program arrangement information.

The outputs of the video encoder 301, the audio encoder 302, the subtitle encoder 303, and the attached data generation unit 304 are streamed, and these streams are multiplexed by the multiplexing unit 305. The multiplexed stream (broadcast signal) is sent to the transmitter 306 as a transport stream and transmitted from the antenna by broadcast radio waves.

The codec type of the video encoder 301 is MPEG-2, H.264. H.264 (AVC: Advance Video Coding), H.264. Any of H.265 (HEVC: High Efficiency Video Coding) may be used. The codec type of the video encoder 301 is not limited to this.

In FIG. 4, a video stream (video signal), an audio stream (audio signal), a data broadcast stream (data broadcast signal), application control information/service data/control data are multiplexed and transmitted on a broadcast wave transmission path 400. It shows the situation.

FIG. 5 schematically shows the main configuration of a receiver 500 (corresponding to 210 in FIG. 2) to which this embodiment is applied. The receiver 500 has a reception function (second basic function 510 (corresponding to 211 in FIG. 2)) of receiving broadcast waves.

The second basic function 510 includes a broadcast tuner 501, a descrambler 502, a CAS module 503, a demultiplexer 504, a data broadcast receiving process 505, a video decoder 506, an audio decoder 507, a subtitle decoder 508, and a data broadcast engine 509.

The broadcast tuner 501 demodulates a stream (broadcast signal) sent by a broadcast wave. The demodulated stream (broadcast signal) is input to the descrambler 502. The descrambler 502 descrambles the input stream using the key from the CAS (Conditional Access System) module 503. The stream descrambled by the descrambler 502 is input to the demultiplexer 504. The demultiplexer 504 separates the multiplexed video stream (video signal), audio stream (audio signal), data broadcast stream (data broadcast signal), application control information/service data/control data, and the separated streams. Input to the corresponding decoder. The video stream separated by the demultiplexer 504 is decoded by the video decoder 506, the audio stream is decoded by the audio decoder 507, and the subtitle stream included in the application control information/service data/control data is decoded by the subtitle decoder 508. To be done. The decoded video signal and subtitle signal can be combined by the combiner 526 and output to the display 527 (corresponding to 220 in FIG. 2). The audio data decoded by the audio decoder 507 can be output to the speaker 528 (corresponding to 221 in FIG. 2).

The data broadcast stream separated by the demultiplexer 504 is received by the data broadcast reception processing unit 505 and input to the data broadcast engine 509. The data broadcasting engine 509 can analyze the display signal sent by the data broadcasting and output the analysis content to the display device 527 via the synthesizer 526.

Further, the receiver 500 has an integrated controller 521 as a means for controlling the overall operation. The integrated controller 521 includes a second security function 522 (corresponding to 212 in FIG. 2), an API 523 (corresponding to 213 in FIG. 2), and an application management function 524 (corresponding to 214 in FIG. 2).

The second security function 522 reads out information related to content protection from the transmission control signal included in the broadcast wave and outputs it to the display 527 or the speaker 528, or to a connected peripheral device (not shown). Performs content protection processing when outputting.

The API 523 is an I/F for the second basic function 510 and the application management function 524 and the application 525 to operate in cooperation with each other.

The application management function 524 controls each block of the receiver 500 based on various control information included in the application control information transmitted by the broadcast wave. Further, the application management function 524 manages the application 525 in cooperation with the second basic function 510 via the API 523.

The application management function 524 also analyzes the transmission control signal such as the program arrangement information included in the service data/control data transmitted by the broadcast wave, and controls each block of the receiver 500 based on the analysis result. ..

The codec type of the video decoder 506 is MPEG-2, H.264. H.264 (AVC: Advance Video Coding), H.264. Any of H.265 (HEVC: High Efficiency Video Coding) may be used. The codec type of the video decoder 506 is not limited to this.

FIG. 6A is a list showing types of tables used when sending program arrangement information in a transmission control signal sent from a broadcasting station to a receiver, which is defined in Non-Patent Document 1 and the like. The table described in the column of “table name” indicates that the table is used when sending the information of the content described in the column of “outline of function”.

FIG. 6B is a diagram showing an example of the format of a table by taking the NIT (Network Information Table) described in Non-Patent Document 1 as an example.

The transmission control signal is mapped and sent according to a format called a table as defined in Non-Patent Document 1 and the like. The table has a table identifier 601 consisting of 1 byte, and this table identifier 601 represents the type of table. The table is further divided into fields, and information fields 602 and 603 called descriptors are arranged in the fields. The descriptor is divided into smaller fields, and the information element is defined in each field. The descriptors arranged in each table are specified in Non-Patent Document 1. For example, a service list descriptor is placed in NIT. A video decode control descriptor (Video decode control descriptor) is arranged in PMT (Program Map Table).

The receiver 500 can grasp the information associating the information on the transmission path with the broadcasting service by analyzing the NIT, for example.

<First Embodiment>
Next, a first embodiment for realizing HDR content broadcasting in 2K broadcasting will be described.

The first embodiment realizes HDR content broadcasting in 2K broadcasting on a service-by-service basis. Here, the service is an organization channel.

Therefore, in the first embodiment, the service format type (service_type) is used as the information designating the dynamic range of the content.

Hereinafter, with reference to FIGS. 7A to 7D, the current service list descriptor (Service list descriptor) defined in Non-Patent Document 1 to Non-Patent Document 3 and the service format type arranged therein will be described. ..

FIG. 7A shows the overall structure of the service list descriptor described in Non-Patent Document 1. A service format type 701 is arranged in this descriptor.

FIG. 7B shows the bit assignment of the service format type 701 described in Non-Patent Document 1. For example, if the bit assignment is 0x01, it means that this service format type is a digital TV service. There are also undefined bit assignments (702, 703) in the bit assignments of this service format type.

FIG. 7C shows the bit assignments used in the terrestrial digital television broadcasting described in Non-Patent Document 2 among the bit assignments of the service format type shown in FIG. 7B. In the figure, the service type classifications marked with a circle in the "Operation for terrestrial digital television broadcasting" column are bit assignments used for terrestrial digital television broadcasting.

FIG. 7D shows the bit assignment of the service format type shown in FIG. 7B, which is used in BS/broadband CS digital broadcasting described in Non-Patent Document 3.

The media type in the table is a collection of a plurality of service format types.

Therefore, in the first embodiment, the service list descriptor described above is expanded and used in order to realize HDR content broadcasting in 2K broadcasting in units of service. An example of the extension will be described below.

FIG. 8A shows an example expanded to the bit assignment of the service format type shown in FIG. 7B. Reference numeral 801 represents the extended bit assignment 0x03 and the HDR-compatible 2K dedicated service, which is the meaning of the value. That is, when the service type of the service list descriptor=0x03, it means that the organization channel is performing the HDR-compatible 2K dedicated service.

Due to this expansion, the undefined area 702 shown in FIG. 7B changes into an undefined area 802 shown in FIG. 8A. An example of this extension is an example in which a bit assignment to be extended is assigned from the undefined 702 shown in FIG. 7B, but a bit assignment to be extended from another undefined area may be assigned, for example, undefined (standardization). A bit assignment to be extended may be assigned from the institution definition area 703.

FIG. 8B shows an example of the contents of expansion in the operation of terrestrial digital television broadcasting based on the expansion of FIG. 8A described above. In this case, 0x03 is expanded and assigned as indicated by 803 in the case of media type=television type.

FIG. 8C shows an example of the contents of expansion in operation in BS/broadband CS digital broadcasting based on the expansion of FIG. 8A. In this case, 0x03 is expanded and assigned as indicated by 804 in the case of media type=television type.

In the above example, the service list descriptor has been described as an example of the descriptor, but other descriptors including the service format type, for example, the service descriptor are also extended.

FIG. 9A shows an example of the processing flow on the transmission side in the first embodiment. The content of this process can be determined by the intention of the transmitting side (for example, the broadcasting station 300 in FIG. 3).

When performing HDR content broadcasting in 2K broadcasting on a service-by-service basis, the transmitting side, for example, the broadcasting station 300, sets the values of the fields of the service list descriptor as follows.

When the transmitting station 300 starts the process of setting the value of each field of the service list descriptor (S900), it determines whether the organization channel is an HDR content broadcasting service (S901). When the organization channel is a service for HDR content broadcasting, “HDR-compatible 2K dedicated service=0x03” is set in the service format type of the service list descriptor (S902). If the organization channel is not an HDR content broadcasting service, another service type such as “digital TV service=0x01” is set in the service format type of the service list descriptor (S903).

The transmitting station 300 subsequently sets necessary information in the service identification, which is another field of the service list descriptor (S904). After setting the required values in all the fields of the service list descriptor, the transmitting station 200 sets the required values in all the fields of the NIT (Network Information Table) including the service list descriptor to generate the NIT. (S905).

The broadcasting station 300 multiplexes the generated NITs by the multiplexing unit 305 shown in FIG. 3 at a predetermined timing, and sends it out as a broadcast wave via the transmitter 306.

FIG. 9B shows an example of the processing flow on the receiving side in the first embodiment. Here, it is assumed that the receiver 500 is a television capable of receiving the service of the HDR content broadcast in the 2K broadcast, that is, a television capable of recognizing the "HDR compatible 2K dedicated service" bit-assigned to the service format type.

Upon receiving the broadcast wave, the receiver 500 demodulates the multiplexed stream (broadcast signal) by the broadcast tuner 501 and separates it for each stream by the demultiplexer 504. The service data/control data shown in FIG. 4 is extracted from this separated stream, and the integrated controller 521 analyzes the transmission control signal (S910).

The integrated controller 521 extracts the NIT from the transmission control signal (S911), and further extracts the service list descriptor from the NIT (S912). After extracting the service list descriptor, the integrated controller 521 further extracts the service format type (S913). After extracting the service format type, the integrated controller 521 determines the value (S914).

As a result of the determination, when the value of the service format type is “digital TV service=0x01” (S914), the integrated controller 521 sets the organization channel as a channel selection target (S915), and the “service of the organization channel”. Various settings (S916) are made as "type type=digital TV service", and the process is terminated (S921).

As a result of the determination, when the value of the service format type is “temporary video service=0xA1” (S914), the integrated controller 521 sets the organization channel as a tuning target (S915), and “ Various settings (S916) are made as "service format type=temporary video service", and the process is terminated (S921).

As a result of the determination, when the value of the service format type is “HDR-compatible 2K dedicated service=0x03” (S917), the integrated controller 521 sets the organization channel as a tuning target (S918) and also Various settings (S919) are performed as "service format type=HDR-compatible 2K dedicated service", and the process ends (S921).

As a result of the determination, if the value of the service format type is neither "digital TV service=0x01", "HDR compatible 2K dedicated service=0x03", or "temporary video service 0xA1", the organization channel is set as a non-selection target (S920). ) And the process is terminated (S921).

FIG. 9C illustrates a television in which the receiver 500 cannot receive the service of the HDR content broadcast in the 2K broadcast, that is, the television in which the “HDR-compatible 2K dedicated service” that is bit-assigned to the service format type cannot be recognized. It is an example of a processing flow in the case.

When the receiver 500 receives the broadcast wave, the broadcast tuner 501 demodulates the multiplexed stream (broadcast signal), and the demultiplexer 504 separates each stream. The control data/service data shown in FIG. 4 is extracted from the separated stream, and the integrated controller 521 analyzes the transmission control signal (S930).

The integrated controller 521 extracts the NIT from the transmission control signal (S931), and further extracts the service list descriptor from the NIT (S932). After extracting the service list descriptor, the integrated controller 521 further extracts the service format type (S933). After extracting the service format type, the integrated controller 521 determines the value (S934).

As a result of the determination, when the value of the service format type is “digital TV service=0x01” (S934), the organization channel is set as a tuning target (S935), and the service format type of the organization channel=“digital TV service”. ", the receiver is set (S936), and the process ends (S938).

In addition, as a result of the determination, when the value of the service format type is “temporary video service=0xA1” (S934), the organization channel is set as a tuning target (S935), and the service format type of the organization channel=“temporary video”. The receiver is set as a "service" (S936), and the process ends (S938).

As a result of the determination, when the value of the service format type is other than “digital TV service=0x01” and “temporary video service=0xA1”, the organization channel is set as a non-target channel (S937) and the process ends (S938). ).

As described above, according to the first embodiment, the receiver 500 can determine whether it is a service (channel) of HDR content broadcasting at the stage of creating the organization channel information to be received, and based on this determination Channel information of the composition channel received by the receiver 500 can be created.

Also, a receiver that does not support the HDR content broadcasting service (channel) can ignore the HDR content broadcasting service (channel) without adding processing. As a result, the transmitting side that provides the HDR content broadcasting service (channel) in the 2K broadcasting can provide the HDR content broadcasting without being aware of whether or not the receiver supports the HDR content broadcasting service in the 2K broadcasting. As a result, the convenience of the user who uses the transmitter/receiver and the receiver is improved.

<Second Embodiment>
Next, a second embodiment for realizing HDR content broadcasting in 2K broadcasting will be described.

The second embodiment realizes HDR content broadcasting in program units. Here, the program is a set of broadcast data stream components that belong to the same service and whose start and end times are determined, and is one program such as news and drama. A program can also be called an event.

Therefore, in the second embodiment, transfer characteristics can be used as the information designating the dynamic range of the content.

Hereinafter, the current video decode control descriptor (Video decode control descriptor) described in Non-Patent Document 1 to Non-Patent Document 3 and transfer characteristics arranged therein will be described with reference to FIGS. 10A to 10D. To do.

FIG. 10A shows the overall structure of the video decode control descriptor described in Non-Patent Document 1. A transfer characteristic 1001 is arranged in this descriptor.

FIG. 10B shows the bit assignment of the transfer characteristic 1001. For example, when the bit assignment is 0x10, this transfer characteristic means that VUI transfer_characteristics=18. Here, VUI (Video Usability Info) is control information in video encoding. That is, the transfer characteristic is also defined in the VUI for video coding. The transfer characteristic defined in the VUI will be described with reference to FIG.

FIG. 10C shows the overall structure of the video decoding control descriptor described in Non-Patent Document 2 (related to terrestrial digital television broadcasting). In the video decoding control descriptor shown in FIG. 10C, the transfer characteristic field shown in FIG. 10A is defined as reserved_future_use 1002.

Further, FIG. 10D shows the overall structure of the video decoding control descriptor described in Non-Patent Document 3 (BS/broadband CS digital broadcasting related). In the video decoding control descriptor shown in FIG. 10D, the transfer characteristic field shown in FIG. 10A is defined as reserved_future_use 1003.

Therefore, in the second embodiment, in order to realize HDR content broadcasting in 2K broadcasting on a program-by-program basis, the video decoding control descriptor used in the terrestrial digital television broadcasting shown in FIG. 10C and the above-mentioned FIG. 10D are shown. The video decoding control descriptor used in BS/broadband CS digital broadcasting is expanded and used. An example of the extension will be described below.

FIG. 11A shows an example of the overall configuration when the video decoding control descriptor described in Non-Patent Document 2 (related to terrestrial digital television broadcasting) in FIG. 10C is expanded. In the video decoding control descriptor shown in FIG. 11A, the transfer characteristic 1101 is arranged.

FIG. 11B shows an example of bit assignment of the added transfer characteristic 1101.

FIG. 11C shows an example of the entire configuration when the video decoding control descriptor described in Non-Patent Document 3 (BS/broadband CS digital broadcasting related) of FIG. 10D is expanded. In the video decoding control descriptor shown in FIG. 11C, the transfer characteristic 1102 is arranged.

FIG. 11D shows an example of bit assignment of the added transfer characteristic 1102.

Further, this transfer characteristic is also defined in VUI (Video Usability Info) of video coding.

FIG. 12 is a diagram showing bit assignments of transfer characteristics (transfer_characteristics) defined in the VUI of video coding defined in Non-Patent Document 5. For example, 1201 indicates HDR (PQ method) and 1202 indicates HDR (HLG method) bit assignment.

In the second embodiment, not only the transfer characteristic of the video decoding control descriptor can be used for the information designating the dynamic range of the content, but also transfer_characteristics of VUI for video encoding can be used. Alternatively, either one of the transfer characteristics may be used.

FIG. 13A shows an example of the processing flow on the transmission side in the second embodiment. The content of this processing can be determined by the intention of the transmitting side (for example, the broadcasting station 300 in FIG. 1).

When performing HDR content broadcasting in 2K broadcasting on a program basis, the transmitting side, for example, the broadcasting station 300, sets the value of each field of the video decoding control descriptor as follows.

When the transmitting station 300 starts the process of setting the value of each field of the video decoding control descriptor (S1300), the transmitting station 300 determines whether the program is an HDR content broadcast program (S1301). If the program is an HDR content broadcast program, "10 (=HDR)" is set as the transfer characteristic of the video decoding control descriptor (S1302). If the program is not an HDR content broadcast program, "00 (=SDR)" is set as the transfer characteristic of the video decoding control descriptor (S1303).

The transmitting station 300 subsequently sets necessary information in the other fields of the video decoding control descriptor, such as the video encoding format (S1304).

The necessary information to be set includes the descriptor length (descriptor_length) and the video encoding format (video_encode_format).
After setting the required values in all the fields of the video decoding control descriptor, the transmitting station 300 sets the required values in all the fields of the PMT including the video decoding control descriptor to generate the PMT (S1305). ..

At the predetermined timing, the broadcasting station 300 multiplexes the generated PMTs by the multiplexing unit 305 and sends out as a broadcast wave via the transmitter 306.

FIG. 13B shows an example of the processing flow on the receiving side in the second embodiment. Here, the receiver 500 is a television capable of receiving a program of HDR content broadcasting in 2K broadcasting, that is, a television capable of recognizing "10 (VUI transfer_characteristics=18)" which is bit-assigned to the transfer characteristic. To do.

Upon receiving the broadcast wave, the receiver 500 demodulates the multiplexed stream (broadcast signal) by the broadcast tuner 501 and separates it for each stream by the demultiplexer 504. The service data/control data shown in FIG. 4 is extracted from the separated stream, and the integrated controller 521 analyzes the transmission control signal (S1310).

The integrated controller 521 extracts the PMT from the transmission control signal (S1311), and further extracts the video decoding control descriptor from the PMT (S1312). After extracting the video decoding control descriptor, the integrated controller 521 further extracts the transfer characteristic from the video decoding control descriptor (S1313). After extracting the transfer characteristic, the integrated controller 521 determines the value (S1314).

As a result of the determination, when the value of the transfer characteristic is “00” (S1314), the integrated controller 521 recognizes the program as SDR content, and sets various settings of the program as “transfer characteristic=SDR” ( S1315) is performed, and the process ends (S1319).

When the result of the determination is that the value of the transfer characteristic is “10” (S1316), the integrated controller 521 recognizes the program as HDR (HLG method) content, and sets the program to “transfer characteristic=HDR”. Various settings (S1317) are made as "(HLG method)", and the process is terminated (S1319).

If the result of determination is that the value of the transfer characteristic is neither "00" nor "10", the integrated controller 521 sets that the program cannot be displayed (S1318) and ends the processing (S1319).

FIG. 13C shows another example of the processing flow on the receiving side in the second embodiment. As in the case of FIG. 13B, the receiver 500 is a television capable of receiving the program of the HDR content broadcast in the 2K broadcast, that is, “10 (VUI transfer_characteristics=18)” that is bit-assigned to the transfer characteristic. Make it a recognizable television. However, in the processing flow of FIG. 13C, when the received program is determined to be HDR content, when the content is displayed on the display device 527, for example, the content is displayed as HDR content or converted to SDR content and then displayed. This is different from the process flow of FIG. 13B in that the process of inquiring the user whether or not it is performed.

Upon receiving the broadcast wave, the receiver 500 demodulates the multiplexed stream (broadcast signal) by the broadcast tuner 501 and separates it for each stream by the demultiplexer 504. The service data/control data shown in FIG. 4 is extracted from this separated stream, and the integrated controller 521 analyzes the transmission control signal (S1320).

The integrated controller 521 extracts the PMT from the transmission control signal (S1321), and further extracts the video decoding control descriptor from the PMT (S1322). After extracting the video decoding control descriptor, the integrated controller 521 further extracts the transfer characteristic from the video decoding control descriptor (S1323). After extracting the transfer characteristic, the integrated controller 521 determines the value (S1324).

As a result of the determination, when the value of the transfer characteristic is "00" (S1324), the integrated controller 521 recognizes the program as SDR content, and sets various settings of the program as "transfer characteristic=SDR" ( S1325) is performed, and the process ends (S1331).

When the result of the determination is that the value of the transfer characteristic is “10” (S1326), the integrated controller 521 causes the display 527 to display that the program is HDR content via the GUI 520, and The user of 500 is prompted to select whether or not to view the program as HDR content (S1327).

When the user selects to view the program as HDR (S1328), the integrated controller 521 makes various settings (S1329) with the setting of the program as “transfer characteristic=HDR (HLG method)”, and the process Is finished (S1331).

When the user does not select to view the program as HDR (S1328), the integrated controller 521 makes various settings (S1329) for the program as “transfer characteristic=SDR” and ends the process (S1331). ..

If the result of the determination is that the value of the service format type is neither "00" nor "10", the integrated controller 521 determines that the program cannot be displayed, makes various settings (S1330), and ends the processing (S1331).

FIG. 13D is a television in which the receiver 500 cannot receive the program of the HDR content broadcast in the 2K broadcast, that is, a television that cannot recognize “10 (VUI transfer_characteristics=18)” that is bit-assigned to the transfer characteristic. It is an example of a processing flow in the case of John.

When the receiver 500 receives the broadcast wave, the broadcast tuner 501 decodes the multiplexed stream (broadcast signal), and the demultiplexer 504 separates each stream. The control data/service data shown in FIG. 4 is extracted from this separated stream, and the integrated controller 521 analyzes the transmission control signal (S1340).

The integrated controller 521 extracts the PMT from the transmission control signal (S1341), and further extracts the video decoding control descriptor from the PMT (S1342). When the integrated controller 521 extracts the video decoding control descriptor, it further extracts the transfer characteristic (S1343). When the transfer characteristic is extracted, the value is determined (S1344).

As a result of the determination, when the value of the transfer characteristic is “00” (S1344), the integrated controller 521 recognizes the program as SDR content, and sets various settings of the program as “transfer characteristic=SDR” ( S1345) is performed, and the process ends (S1347).

If the result of the determination is that the value of the transfer characteristic is not "00" (S1344), the integrated controller 521 makes various settings (S1346) that the program cannot be displayed and ends the processing (S1347).

The processing flow of FIGS. 13A to 13D is the processing flow when the transfer characteristic included in the video decoding control descriptor is used as the information designating the dynamic range of the content. The VUI of the video encoding shown in FIG. 12 is used. The dynamic range of content may be specified using the transfer_characteristics. In this case, the transmission side sets a value indicating the HDR content in the transfer characteristic in the VUI based on the video encoding syntax, and the reception side in the VUI based on the video encoding syntax. The value indicating that the content is HDR content may be extracted by analyzing the transfer characteristic of.

FIG. 13E shows a processing flow of VUI (Video Usability Information) setting in the video encoding processing on the transmission side in the second embodiment. The content of this processing can be determined by the intention of the transmitting side (for example, the broadcasting station 300 in FIG. 1).

When performing HDR content broadcasting in 2K broadcasting, the transmitting side, for example, the broadcasting station 300, sets the transfer characteristics of the VUI for video coding as follows.

When the transmitting station 300 starts the VUI setting process in video encoding (S1350), the transmitting station 300 determines whether the encoding target program is an HDR content broadcast program (S1351). If the program to be encoded is a program of HDR content broadcast, "18 (=HDR)" is set as the transfer characteristic of the VUI to be encoded (S1352). When the program to be encoded is not the HDR content broadcasting service, "1 (=SDR)" is set to the transfer characteristic of the VUI to be encoded (S1353). When the setting of the transfer characteristics is completed, the broadcasting station 300 sets the values of other fields of the VUI (S1353). When the setting of the values of the other fields of the VUI (S1354) is completed, the broadcasting station 300 ends the VUI setting process in the video encoding (S1355).

At the predetermined timing, the broadcasting station 300 multiplexes the generated video coding by the multiplexing unit 305 and sends it as a broadcast wave via the transmitter 306.

FIG. 13F shows a processing flow of VUI analysis in the video decoding processing on the receiving side in the second embodiment. Here, it is assumed that the receiver 500 is a television capable of receiving the program of the HDR content broadcast in the 2K broadcast, that is, a television capable of recognizing "18" bit-assigned to the VUI of the video encoding.

Upon receiving the broadcast wave, the receiver 500 demodulates the multiplexed stream (broadcast signal) by the broadcast tuner 501 and separates it for each stream by the demultiplexer 504. The video stream shown in FIG. 4 is extracted from the separated streams, and the video decoder 506 performs syntax analysis processing of the video stream (S1360).

The video decoder 506 extracts the VUI from the video stream (S1361), and further extracts the transfer characteristic from the VUI (S1362). After extracting the VUI, the video decoder 506 determines the value (S1363).

If the result of determination is that the value of the transfer characteristic is "1" (S1363), the video decoder 506 recognizes the decoded program as SDR content and sets the setting of the decoded program as "transfer characteristic=SDR". Various settings are made (S1364), and the process ends (S1368).

If the result of determination is that the value of the transfer characteristic is “18” (S1365), the video decoder 506 recognizes the decoded program as HDR (HLG format) content, and sets the setting of the decoded program to “transfer”. Various settings (S1366) as "characteristic=HDR (HLG method)" are performed, and the process is terminated (S1368).

When the result of the determination is that the value of the transfer characteristic is neither "1" nor "18", the video decoder 506 sets the decoded program as undisplayable (S1367) and ends the process (S1368).

The process of S1318 of FIG. 13B, S1330 of FIG. 13C, S1346 of FIG. 13D, and S1367 of FIG. 13F is “set the program as not displayable”, but for example, “set the program as SDR is set”. It may be replaced with processing.

FIG. 13G shows an example of the process flow in the case where only the process of S1318 of the process flow of FIG. 13B is replaced with “Set relevant program as SDR” S1378. By adopting such a processing flow, the receiver 500 can display the received program at least without interruption, which may be convenient for some users.

As described above, according to the second embodiment, the receiver 500 can determine whether each received program is HDR content, and the receiver settings can be optimized for each program. It will be possible. Especially, since the PMT in which the video decoding control descriptor is arranged has a short retransmission cycle of 200 ms or less, when the program to be received is switched as in the case of channel selection, the receiver 500 sets various settings to an optimal state in a short period of time. It becomes possible to do. As a result, the user who uses the receiver 500 can view the program after tuning without feeling discomfort at the time of tuning, and the convenience for the user is enhanced.

Furthermore, the second embodiment can use not only the transfer characteristic in the video decoding control descriptor but also the transfer characteristic in the VUI for video coding to determine whether the content is HDR content.

Some receivers may not store the information of the video decoding control descriptor or the component descriptor shown in the third embodiment when recording the received program and storing it in the HDD 230, for example. The receiver 500 determines whether the program recorded without such information of the video decoding control descriptor or the component descriptor is the SDR content or the HDR content, the transfer characteristic and the component in the video decoding control descriptor. It is possible to make the determination by using the transfer characteristic in the VUI of the video encoding, instead of using the component type of the descriptor.

For example, when the receiver 500 creates a recorded program list of recorded programs, the receiver 500 reads out a program stored in the HDD 230 at an arbitrary timing, and the transfer characteristic in the VUI for video encoding of the program. May be referred to. Alternatively, the receiver 500 may refer to the transfer characteristic in the video coding VUI of the program when the user selects a specific program in the recorded program list.

As a result, the receiver 500 can recognize whether the program stored in the HDD 230 is HDR content or SDR content, and the recognition result can be displayed, for example, as a recorded program list.

As described above, an example of reproducing a certain program recorded by a certain television receiver on a plurality of television receivers is, for example, a plurality of television receivers connected by a home network, The television receiver of 1 corresponds to the case where the recorded program stored in the HDD connected to the network is reproduced.

Also, by using the component type (component_type) in the component descriptor shown in the third embodiment described later, the receiver 500 can recognize whether the next program or later is HDR content or SDR content. Is. Therefore, it is possible to determine whether the content is the HDR content or the SDR content in both the current program and the next program by using the information of both the transfer characteristic of the second embodiment and the component type of the third embodiment. Is possible. As a result, the receiver 500 can notify the user who is currently watching the program of the information regarding the brightness of the next program in advance, and the convenience of the user is enhanced.

<Third Embodiment>
Next, a third embodiment for realizing HDR content broadcasting in 2K broadcasting will be described.

The third embodiment is for displaying the existence of HDR content broadcast in 2K broadcast on a GUI. Displaying HDR content broadcast on the GUI means, for example, displaying that a certain program is HDR content in the program information display.

Therefore, in the third embodiment, the component content (stream_content) and the component type (component_type) are used as the information designating the dynamic range of the content.

Hereinafter, with reference to FIGS. 14A to 14D, the current component descriptor (Component descriptor) described in Non-Patent Document 1 to Non-Patent Document 3 and the component content and component type arranged therein will be described. ..

FIG. 14A shows the overall structure of the component descriptor described in Non-Patent Document 1. In this descriptor, a component content 1401 and a component type 1402 are arranged.

FIG. 14B shows the bit assignment of the combination of the component content 1401 and the component type 1402. For example, when the component content=0x1 and the component type=0xB3, it means that the encoded video format is 1080i (1125i), the aspect ratio is 16:9, and there is no pan vector.

FIG. 14C shows component type bit assignment described in Non-Patent Document 2 (related to terrestrial digital television broadcasting).

FIG. 14D shows component type bit assignments described in Non-Patent Document 3 (BS/broadband CS digital broadcasting related).

Therefore, in the third embodiment, in order to display the HDR content broadcast on the GUI, the component content and the component type described in Non-Patent Document 1 shown in FIG. 14B described above and the terrestrial digital television shown in FIG. 14C described above. The component contents and component types operated in broadcasting and the component contents and component types operated in BS/broadband CS digital broadcasting shown in FIG. 14D are expanded and used. An example of the extension will be described below.

FIG. 15A shows an example extended to the bit assignment of the component type shown in FIG. 14B. “Component type=0xB4” in 1501 and “component type=0xE4” in 1503 are extended bit assignments. For example, in the case of component content=0x9 and component type=0xB4 1501, the codec type of video coding is H.264. 265, the encoded video format is 1080i (1125i), and the aspect ratio is HDR content, which means 16:9. This causes the undefined areas 1403 and 1404 shown in FIG. 14B to change to areas 1502 and 1504 in FIG. 15A.

FIG. 15B shows an example in which the extension of FIG. 15A is applied to the bit assignment when operating in the terrestrial digital television broadcast shown in FIG. 14C. The bit assignments 1505 to 1508 are expanded in the operation of terrestrial digital television broadcasting, corresponding to the expansion shown in FIG. 15A. 1501 in the extension of FIG. 15A corresponds to 1506, and 1503 in the extension of FIG. 15A corresponds to 1508. Further, with the addition of codec types, 1505 and 1507 are also added.

FIG. 15C shows an example in which the extension of FIG. 15A above is applied to the bit assignment when operating in the BS/broadband CS digital broadcasting shown in FIG. 14D. The bit assignments 1509 to 1512 are expanded in the operation of BS/broadband CS digital broadcasting, corresponding to the expansion shown in FIG. 15A. 1501 in the extension of FIG. 15A corresponds to 1510, and 1503 in the extension of FIG. 15A corresponds to 1512. Further, with the addition of codec types, 1509 and 1511 are also added.

FIG. 16A shows an example of the processing flow on the transmission side in the third embodiment. The content of this process can be determined by the intention of the transmitting side (for example, the broadcasting station 300 in FIG. 3).

When performing HDR content broadcasting in 2K broadcasting, the transmitting side, for example, the broadcasting station 300, sets the value of each field of the component descriptor as follows.

When the transmitting station 200 starts the process of setting the value of each field of the component descriptor (S1600), the transmitting station 200 determines whether the program is an HDR content broadcast program (S1601). If the program is an HDR content broadcast program, the combination of (component content, component type) in the component descriptor includes “H.265|MPEG-H HEVC, video 1080i (1125i), aspect ratio 16:9, HDR. =(0x9,0xB4) or "H.265|MPEG-H HEVC, video 1080p (1125p), aspect ratio 16:9, with HDR"=(0x9,0xE4) is set (S1602). If the program is not a program for HDR content broadcasting, “video 1080i (1125i), aspect ratio 16:9, no pan vector”=(0x1, 0xB3) is added to the combination of (component content, component type) of the component descriptor. The setting is made (S1603).

The transmitting station 300 subsequently sets necessary information in the other field of the component descriptor, such as a language code (S1604). After setting the required values in all the fields of the component descriptor, the transmitting station 300 sets the required values in all the fields of the EIT including the component descriptor, generates the EIT (S1605), and ends the processing. Yes (S1606).

The broadcasting station 300 multiplexes the generated EITs by the multiplexing unit 305 shown in FIG. 3 at a predetermined timing, and sends the EITs as broadcast waves via the transmitter 306.

FIG. 16B shows an example of the processing flow on the receiving side in the third embodiment. Here, the receiver 500 recognizes a television capable of receiving the program of the HDR content broadcast in the 2K broadcast, that is, (0x9, 0xB4) (0x9, 0xE4) of the combination of bit assignments of (component content, component type). Let's make a television.

Upon receiving the broadcast wave, the receiver 500 demodulates the multiplexed stream (broadcast signal) by the broadcast tuner 501 and separates it for each stream by the demultiplexer 504. The service data/control data shown in FIG. 4 is extracted from the separated stream, and the integrated controller 521 analyzes the transmission control signal (S1610).

The integrated controller 521 extracts the EIT from the transmission control signal (S1611), and further extracts the component descriptor from the EIT (S1612). After extracting the component descriptor, the integrated controller 521 further extracts the component content and the component type (S1613). The integrated controller 521, after extracting the component contents and the component type, determines the respective values (S1614).

As a result of the determination, when the combination of the values of (component content, component type) is (0x1, 0xB3) (S1614), the integrated controller 521 sets the setting of the program to "video 1080i (1125i), aspect ratio 16:9." , "No pan vector" is recognized, various settings are made (S1615) such that "component type" = "video 1080i (1125i), aspect ratio 16:9, no pan vector" of the program, and the process ends. Yes (S1619).

As a result of the determination, if the combination of the values of (component content, component type) is either (0x9, 0xB4) or (0x9, 0xE4) (S1616), the integrated controller 521 determines that the program is “H.265| MPEG-H HEVC, video 1080i (1125i), aspect ratio 16:9, with HDR" or "H.265 | MPEG-H
HEVC, video 1080p (1125p), aspect ratio 16:9, with HDR” is recognized, and the setting of the program is set to “H.265|MPEG-H HEVC, video 1080i (1125i), aspect ratio 16: 9, HDR present" or "H.265|MPEG-H HEVC, video 1080p (1125p), aspect ratio 16:9, HDR present" (S1617), and the process ends (S1619).

As a result of the determination, if the combination of the values of (component content, component type) is not (0x1, 0xB3) (0x9, 0xB4) (0x9, 0xE4), the integrated controller 521 does not display the setting of the program. The setting is made possible (S1618) and the processing is ended (S1619).

FIG. 16C shows a television in which the receiver 500 cannot receive the program of the HDR content broadcast in the 2K broadcast, that is, (0x9, 0xB4) (0x9, 0xE4) of the bit assignment combination of (component content, component type). It is an example of a processing flow in the case of a television that cannot recognize.

When the receiver 500 receives the broadcast wave, the broadcast tuner 501 decodes the multiplexed stream (broadcast signal), and the demultiplexer 504 separates each stream. The control data/service data shown in FIG. 4 is extracted from the separated stream, and the integrated controller 521 analyzes the transmission control signal (S1640).

The integrated controller 521 extracts the PMT from the transmission control signal (S1641), and further extracts the component descriptor from the PMT (S1642). After extracting the component descriptor, the integrated controller 521 further extracts the component type (S1643). After extracting the component type, the integrated controller 521 determines the value (S1644).

As a result of the determination, when the value of the component type is “0xB3” (S1644), the integrated controller 521 sets the content of the program to “video 1080i (1125i), aspect ratio 16:9, no pan vector”. Then, various settings are made as "component type" of the program = "video 1080i (1125i), aspect ratio 16:9, no pan vector" (S1645), and the process ends (S1647).

As a result of the determination, when the value of the component type is not “0xB3”, the integrated controller 521 sets the display of the program as not displayable (S1646) and ends the processing (S1647).

Although the processing of S1618 of FIG. 16B and S1646 of FIG. 16C is “set the program as not displayable”, like the processing flow of FIG. 13G of the second embodiment, for example, “set the program as SDR. You may replace with the process of "setting."

As described above, the receiver 500 can determine whether each program is an HDR content or not. The EIT is a table containing time-series information about programs included in each service (composition channel). By adding information designating the dynamic range of the content to the component type according to the processing flow shown in FIGS. 16A to 16C, for example, the content type of the HDR content/SDR content is added to the program information to be broadcast in the future. It becomes possible to add, and the convenience when the user selects a program to watch increases. Further, by this, the transmitting side can also appeal in the program guide that the broadcasting service by the HDR content is being implemented, and the user satisfaction with the created HDR content can be increased.

In addition, the receiver 500 sets the receiver 500 and the display 220 to the optimum state corresponding to the dynamic range of each program not only for viewing the broadcast program but also for playing the recorded program. It is possible. The receiver 500 also stores the component descriptor information when recording the received program and storing it in the HDD 230, for example. Thus, the receiver 500 determines whether the recorded program is HDR content or SDR content by using the component type in the component descriptor when creating the recording list of the recorded program. It is possible to display, for example, whether the program is HDR content or SDR content on the recording list based on the determination result. This allows the user of the receiver 500 to know whether the program is HDR content or SDR content when playing back a recorded program, thus improving user convenience.

16A to 16C, when the component type of the component descriptor is used as the information designating the dynamic range, for example, genre 1 (content_nibble_level_1) or genre 2 (content_nibble_level_2) in the content descriptor (content descriptor). It is also possible to use.

Hereinafter, the current content descriptor described in Non-Patent Document 1 and the genre 1 and the genre 2 arranged in the content descriptor will be described with reference to FIGS. 17A to 17D.

FIG. 17A shows the entire structure of a content descriptor which is a descriptor described in Non-Patent Document 1 (related to digital broadcasting). In the figure, 1701 indicates a genre 1 (content_nibble_level_1), and 1702 indicates a genre 2 (content_nibble_level_2). The genre 1 indicates a large classification of genres. The genre 2 indicates the middle classification in each of the major classifications of the genre 1.

The maximum number of loops N in FIG. 17A is 7, and a plurality of content_nibble and user_nibble can be set in one content descriptor. The maximum number of content_nibble_level1 and content_nibble_level2 that can be set in one content descriptor is 3 as defined in Non-Patent Document 2 or Non-Patent Document 3.

FIG. 17B shows the bit assignment for the genre classification of genre 1. The genre major classification in the figure represents genre 1.

FIG. 17C and FIG. 17D show bit assignments for genre classification of genre 2 (content_nibble_level_2). FIG. 17C shows the bit assignment of genre 2 (content_nibble_level_2) in the case of genre 1 (content_nibble_level_1)=0x6 (movie), and FIG. 17D shows the bit assignment of genre 2 in the case of genre 1=0x8 (documentary/education). ing.

Therefore, in order to display the HDR content broadcast on the GUI, the genre 1 shown in FIG. 17B or the genre 2 shown in FIGS. 17C and 17D is expanded and used.

FIG. 18A is an example in which HDR content 1801 is added to the genre 1 shown in FIG. 17B. As a result, the spare 1703 shown in FIG. 17B changes to the spare 1802 shown in FIG. 18A.

FIG. 18B is an example in which HDR content 1803 is added to the genre 2 shown in FIG. 17C.

Similarly, FIG. 18C is an example in which the HDR content 1804 is added to the genre 2 shown in FIG. 17D.

In addition to FIGS. 18A, 18B, and 18C, for example, in “genre 1=others (0xF)” of FIG. 17B, “HDR content=0x0” may be added to genre 2.

When broadcasting HDR content in a movie genre, for example, using the genre extension described above, the transmission side uses the extended genre 1 shown in FIG. 18A to “genre 1=movie (0x6)” and “genre 1=movie (0x6)”. Genre 1=HDR content (0xc) may be set and transmitted. The receiving side 500 extracts all genres 1 and genres 2 from the received content descriptors to confirm that the contents are genres 1=movie (0x6) and genres 1=HDR contents (0xc). Can be recognized. That is, the receiver 500 can recognize that the received content is the HDR content of the movie.

Further, for example, when broadcasting HDR content in the genre of a movie, the transmission side uses the extended genre 2 shown in FIG. 18B to “genre 1=“movie (0x6)” and “genre 2=HDR content (0x3)”. You can also set and send. The receiver 500 extracts all genres 1 and genres 2 from the received content descriptor, so that the contents are “genres 1=movie (0x6)” and “genres 2=HDR contents (0x3)”. You can recognize that there is. That is, the receiver 500 can recognize that the received content is the HDR content of the movie.

Furthermore, for example, when broadcasting HDR content in a movie genre, genre 1=“movie (0x6)” and “genre 1=other (0xF)” and “genre 2=HDR content (0x0)” are set and transmitted. You can also The receiver 500 extracts all genres 1 and genres 2 from the received content descriptor, so that the contents are “genre 1=movie (0x6)” and “genre 1=other (0xF)”. It can be recognized that “genre 2=HDR content (0x0)”. That is, the receiver 500 can recognize that the received content is the HDR content of the movie.

The processes on the transmission side and the reception side are the components of the processing flow of FIGS. 16A to 16C even when the genre 1 or the genre 2 in the content descriptor is used to specify the dynamic range of the content. A similar processing flow is obtained only by replacing the descriptor with the content descriptor and the combination of the component content and the component type with the combination of the genre 1 and the genre 2.

Furthermore, when a user searches for a program, there is a method of specifying a genre and searching. In this case, the receiver 500 narrows down the content corresponding to the genre input by the user, using the information of genre 1 and genre 2 of each content. By adding “HDR content” to genre 1 and genre 2 as shown in FIGS. 18A, 18B, and 18C, when the user specifies “HDR content” in the genre, the receiver 500 selects all the content. It is possible to narrow down the HDR content from.

One form of program broadcasting is called event sharing. This allows the same event (program) to be viewed regardless of which service (channel) is viewed by describing the same ES_PID in the elementary_PID fields of PMTs of a plurality of services (channels). Is. The PMT includes information indicating the location of a TS packet that transmits each coded signal (coded signal such as a coded video signal and a coded audio signal) that forms a program. ES_PID, which is the PID (Packet ID) of the TS packet transmitting each encoded signal, is described in the elementary_PID field in the PMT. The value of elementary_PID is not basically changed during the program.

FIG. 19A is a diagram showing the ES_PID described in the elementary_PID field of the PMT of each event (program), with the vertical axis representing service_id and the horizontal axis representing time. The squares in the figure represent one event (program). The service_id is an identification value assigned to each service, and is a unique value assigned to each organization channel in television broadcasting nationwide. The service_id is placed in the service list descriptor shown in FIG. 7A, is included in the NIT (Network Information Table), and is sent to the receiver.

In the example of FIG. 19A, ES_PID=0x0030, 0x0031, 0x0032 is assigned to each of service_id=101, 102, 103 until 20:00. On the other hand, between time 20:00 and time 21:00 (section=T1), the same ES_PID, ES_PID=0x0033, is assigned to each of service_id=101, 102, and 103. This indicates that the three composition channels corresponding to service_id=101, 102, 103 are composed of the same coded signal between time 20:00 and time 21:00 (section=T1). There is. That is, the user can view the program composed of the same coded signal (the same broadcast content) regardless of which of the three channels corresponding to service_id=101, 102, 103 is selected.

In the section where event sharing is performed=T1, the video coded signal and the audio coded signal of ES_PID0x0033 are sent using any one band of service_id=101, 102, and 103, and the remaining two bands. In, the video coded signal and the audio coded signal are not sent. In the example of FIG. 19A, for example, the video coded signal and the audio coded signal of ES_PID 0x0033 are sent using the band of service_id=101, and the video coded signal and the audio coded signal of ES_PID 0x0033 in the band of service_id=102 and service_id=103 In this example, no signal is sent.

When event sharing is performed, the video coded signal and the audio coded signal are sent in only one band in this way, and the coded signal is not sent in the remaining bands. Can be used for other purposes.

Since the amount of information of HDR content is larger than that of SDR content, when performing HDR content broadcasting in the current 2K broadcasting, there is a possibility that a wider bandwidth than the current broadcast wave bandwidth is required. As a method of ensuring a wider bandwidth than the current bandwidth, for example, a method of using a band in which a video coded signal and a voice coded signal are not transmitted by using the event sharing shown in FIG. 19B can be considered.

FIG. 19B is a diagram showing an example of a state in which service_id=101 and service_id=102 are used by event sharing to secure a wide bandwidth for transmitting HDR content. In the example of FIG. 19B, between time 20:00 and time 21:00 (section=T2), the video coded signal of the HDR content (ES_PID=ES_PID=using the two bands of service_id=101 and 102 shared by the event) is used. 0x0034) This is an example of transmission.

According to the first to third embodiments, the receiver 500 can recognize that the content transmitted by the broadcast wave is the HDR content at various timings.

The content displayed on the display 527 when the receiver 500 recognizes that the content transmitted by the broadcast wave is the HDR content will be described below based on the specific usage scene of the receiver 500. ..

FIG. 20A is an example of the display content of the 12-position list displayed by the display device 527 when the receiver 500 creates the 12-position list.

The receiver 500 uses the service type (service_type) as described in the first embodiment to determine whether the target channel is a channel for broadcasting HDR content when creating the 12 position list. You can

20A is displayed on the display device 527 when the receiver 500 determines that 27 ch is an HDR content broadcast as a result of determining the service format type of each service (channel) based on the processing flow shown in FIG. 9B. The example of the display content of the 12 position list is shown. The display 2001 of the HDR content broadcast shows that 27ch is the HDR content broadcast.

FIG. 20B is another example of the display contents of the 12-position list when the receiver 500 creates the 12-position list.

As explained above, event sharing may be used to broadcast HDR content in 2K broadcasts. When performing event sharing, the receiver 500 recognizes that a plurality of channels of the broadcasting service from the same broadcasting station are HDR content broadcasting by the processing shown in FIG. 9B. In this case, the 12-position list display may be made such that, as shown in, for example, FIG. 20B, it is possible to imagine that video coded data making up one program is sent by a plurality of channels. In the example of FIG. 20B, in order to imagine that one program of HDR content is being broadcast using 27ch and 26ch, 26ch and 27ch are surrounded by one frame, and the HDR content broadcast is in that frame. Is an example of visually displaying.

Visually displaying the HDR content broadcast as shown in FIG. 20B also has an effect of intuitively appealing to the user of the receiver 500 that the HDR content broadcast is superior to the SDR content broadcast. is there.

FIG. 20C is another example of the display contents of the 12-position list when the receiver creates the 12-position list.

As shown in the process of FIG. 9C, in the conventional 2K television in which only the “digital TV service” can be discriminated as the service format type, even if there is a service (channel) for performing HDR content broadcasting, the influence of the existence thereof You can ignore your existence without suffering. FIG. 20C is an example of displaying a 12-position list in a conventional 2K television in which only the service format type=“digital TV service” can be determined when the HDR content broadcast as shown in FIG. 20A exists. .. The HDR content broadcast channel 2001 existing in the 12-position list shown in FIG. 20A is not displayed like 2002 in FIG. 20C.

As described above, in the first embodiment, since the conventional 2K television can exclude the HDR content broadcast from the reception target at the stage of creating the 12-position list, the conventional 2K television mistakenly outputs the HDR content. There is no problem of displaying. Therefore, not only the convenience of the user of the receiver 500 but also the convenience of the user of the conventional 2K television is improved.

FIG. 21A shows an example in which, when the user selects or views a program receivable by the receiver 500, it clearly indicates whether the program displayed on the display unit 527 is an HDR content broadcast or an SDR content broadcast. is there.

The receiver 500 uses the component content and the component type in the component descriptor as described in the third embodiment, so that the program currently received by the receiver 500 and the program to be broadcast from now on are HDR contents. It is possible to recognize whether it is broadcasting or SDR content broadcasting. The receiver 500 can also present the recognized result to the user.

In the case where the receiver 500 determines that the program is an SDR content broadcast as a result of determining the transfer characteristic of the program selected or viewed by the user based on the processing flow illustrated in FIG. 16B, FIG. This is an example of displaying on the display 527 that the program is an SDR content broadcast. The receiver 500 displays "SDR broadcast" 2101 at the lower right of the display screen to indicate that the program is an HDR content broadcast.

In FIG. 21B, the receiver 500 determines the transfer characteristic of the next program based on the processing flow shown in FIG. 16B in the state shown in FIG. 21A, and as a result, determines that the next program is an HDR content broadcast. In this case, the display 527 clearly shows that the next program is an HDR content broadcast. The receiver 500 displays “SDR broadcast→HDR broadcast” 2102 at the lower right of the display screen to indicate that the current program is SDR content broadcast and the next program is HDR content broadcast.

Furthermore, the receiver 500 can also display the progress status of the current program by using other PSI (Program Specific Information) and SI (Service Information) information regarding the program.

FIG. 21C is an example showing the progress status of the SDR content broadcast which is the current program. The horizontal length of the hatched portion of “SDR broadcast” 2103 indicates the progress status of the program. This allows the user of the receiver 500 to easily grasp the time until the timing of switching to the HDR content broadcast. Furthermore, when the timing of switching from the SDR content broadcast to the HDR content broadcast is close, the display of “HDR broadcast” is enlarged to make it more clear to the user of the receiver 500 that the time to switch to the HDR content broadcast is imminent. It is possible to make it easier.

FIG. 21D is an example in which the display of “HDR broadcast” is enlarged as shown in 2104 in order to make it easier to understand that the time to switch to HDR content broadcast is approaching.

The HDR content broadcasting service in 2K broadcasting includes a plurality of program data in one program in which HDR content broadcasting and SDR content broadcasting are simultaneously broadcast in consideration of a user who uses an existing 2K broadcasting compatible television. It is expected that the broadcast format will be used. In other words, the broadcast form of the HDR content broadcast in the 2K broadcast is that while the program of the HDR content broadcast is broadcast, the program of the SDR content broadcast is also broadcast in parallel for the user who uses the existing television compatible with the 2K broadcast. Is expected to become.

In one event (program), a plurality of program data ES (Elementary Stream, basic stream, which corresponds to encoded video, audio, and independent data) can be defined. As defined in Non-Patent Document 2, a component tag (component_tag) value described in a stream identifier descriptor (Stream identifier descriptor) arranged in the PMT is assigned to the ES. The component tag is an 8-bit field and is a label for identifying the component stream. The component tag value assigned to each ES is unique within the service (channel). The component tag value of this stream identification descriptor is the same as the component tag value of the component descriptor shown in FIG. 14A.

When an ES of a plurality of program data exists in an event (program), the ES first displayed on the display 527 of the receiver 500 when the service is selected is called a default ES.

The component tag value of the default ES is defined in Non-Patent Document 2 as follows.

The component tag value of the default ES is:-Video stream: component tag value = 0x00-Audio stream: component tag value = 0x010
As described above, considering a user who uses an existing 2K broadcasting-compatible television, a broadcasting mode in which a plurality of program data is included in one program, that is, HDR content broadcasting and SDR content broadcasting are simultaneously broadcast. Is expected to become.

As a method for realizing such a broadcasting form, as method 1, (1-1) the default ES is SDR content.

(1-2) HDR content other than the default ES is set.

There is a way.

By assigning the HDR content/SDR content to the default ES in this way, a user who uses an existing 2K broadcasting-compatible television can view the program as usual even if the HDR content broadcasting exists. Is possible.

The processing on the transmitting side in the case of realizing the method 1 is performed by using the program data among a plurality of program data existing in the event (program).
(1-3) Component tag value of SDR content is set to 0x00 (1-4) Component tag value of HDR content is set to other than 0x00 (for example, 0x04) to create and transmit a PMT.

This processing has a similar processing flow only by replacing the video decoding control descriptor with the stream descriptor and the transfer characteristic with the component tag in the processing flow of FIG. 13A of the second embodiment.

Further, in the processing on the receiving side in the case of realizing the method 1, the inside of the PMT is analyzed and (1-5) the component tag value=0x00 is displayed as the default ES on the display 527 of the receiver 500.

This process is similar to the existing 2K broadcasting compatible television, except that the video decoding control descriptor of the process flow of FIG. 13D is replaced with the stream descriptor and the transfer characteristic is replaced with the component tag.

That is, even if the HDR content broadcast and the SDR content broadcast are simultaneously broadcast in one program, the existing 2K broadcast compatible television can be set by setting the default ES as in (1-3) and (1-4) above. John will be able to view the SDR content broadcast as usual.

In this case, a display for urging the user who is viewing the receiver 500 capable of displaying HDR content to select which program of SDR content broadcasting/HDR content broadcasting may be displayed, for example.

FIG. 22A is an example of a display screen that prompts the user to select which program, SDR content broadcast/HDR content broadcast, is to be viewed in a program including HDR content broadcast and SDR content. In this example, the current program is SDR content broadcasting. This is also an example in which the next program is a program including a plurality of program data, the default ES is SDR content broadcasting, and the other than the default ES is HDR content broadcasting.

Reference numeral 2201 indicates that when the next program includes a plurality of program data, one of them is the SDR content broadcast which is the default ES and the other is two programs of the HDR content broadcast which is other than the default ES. There is.

Further, 2202 is an example in which a display prompting the user of the receiver 500 to select whether or not to watch the HDR content broadcast other than the default ES as the next program is displayed.

FIG. 22B shows that, like FIG. 22A, the next program includes a plurality of program data, one of which is the SDR content broadcast which is the default ES, and the other of which is the HDR content broadcast which is other than the default ES. It is an example. Of the displays of the next program 2203, the display “SDR broadcast” showing the SDR content broadcast, which is the program to be displayed by default, is largely displayed.

With such a display, the user can easily recognize that the program displayed by default as the next program is the SDR content broadcast. As a result, for example, as shown in FIG. 22A, “HDR content can be viewed in the next program. Do you want to view HDR content?” 2202, a display prompting selection of HDR content other than the default ES is displayed. It is not necessary, and the display content of the display screen can be simplified. Some users may demand simplification of the display content, and displaying 2203 provides an advantage that the display content is not bothered. In this case, the user may select himself/herself so that the HDR content can be viewed as the next program according to the display content 2203.

In addition to the method 1 described above, the following method 2 can be considered.

(2-1) Set default ES as SDR content (2-2) Define HDR content as a second default ES other than the default ES, and assign a component tag value (for example, component tag value=0x08 to the second Assign as default ES).

In the television receiver capable of recognizing the component tag value=0x08 of the second default ES, the method 2 is performed when the PMT includes the component tag value=0x08 which is the second default ES. The default ES is prioritized over the default ES, and the HDR content, which is the second default ES, is displayed on the display screen of the television receiver.

The processing on the transmitting side in the case of implementing this method 2 is the same as the processing on the transmitting side in the case of method 1. However, 0x08 is set as the component tag value of the HDR content data.

Further, the processing on the receiving side in the case of realizing this method 2 is that when the PMT is analyzed and (1-3) the component tag value=0x08 is recognized, the second default ES is given priority over the default ES. The HDR content is displayed on the display 527 of the receiver 500.

By the method 2, the user having the television receiver capable of receiving the HDR content can watch the HDR content without any special operation when there is a program of the HDR content broadcast. The convenience is improved. Further, some users may want to view SDR content instead of HDR content. In this case, a display prompting the user to select "Do you want to view SDR content?" may be displayed, like the display prompting the selection 2202 in FIG. 22A.

FIG. 23 is an example of display of a program guide including HDR content broadcast. As described in the third embodiment, when the receiver 500 recognizes that the program is the HDR content program based on the process of FIG. 16B, the program guide displays that the program is the HDR content broadcast. This is an example. The HDR broadcast displays 2301 to 2303 indicate that the corresponding program is an HDR content broadcast program.

In addition, a program of HDR content broadcast may be included as a program including a plurality of program data. Reference numeral 2303 is a display example when the default ES is a program of SDR content broadcasting as a program including a plurality of program data, and a program of HDR content broadcasting is included in addition to the default ES. In this example, the display of the SDR content broadcast, which is the program of the default ES, is large and the display of the HDR content broadcast, which is the program other than the default ES, is small.

It is also possible to add a display as to whether the program is HDR content or SDR content in the detailed information of each program in the program guide or in the display content of the recording list.

24A and 24B show an example in which the display contents of the detailed information of each program in the program guide are added, and FIGS. 25A and 25B show the display contents of the recording list with an indication as to whether the program is HDR content or SDR content. Showing.

FIG. 24A is an example of a detailed information display 2400 about a program displayed when the program name=high-definition adventure shown in 2302 shown in FIG. 23 is selected using a TV remote controller or the like.

The area 2401 is an area showing whether the program displayed by default is the SDR content or the HDR content when the program includes a plurality of program data. The example of FIG. 24A shows that the program displayed by default is SDR content.

The area 2402 is an area indicating whether the program other than the default displayed program is the SDR content or the HDR content when the program includes a plurality of program data. In the example of FIG. 24A, programs other than the programs displayed by default are HDR contents.

An area 2404 indicates that, when the program includes a plurality of program data, the display of the SDR content and the HDR content can be switched when the plurality of programs include two SDR contents and HDR contents. Is.

Also, unlike method 1 and method 2 described above, receiver 500 displays the program including a plurality of program data as the method 3, regardless of the setting content of default ES, regardless of the content set by receiver 500. It is also possible to set the content to be displayed on the display unit 527 based on this.

Area 2405 is a selection button selected by the user when displaying HDR content on display 527 regardless of the default ES of the corresponding program. Similarly, the area 2406 is a selection button selected by the user when the SDR content is displayed on the display 527 regardless of the default ES of the program.

When the user presses the button of “select HDR display” 2405 or “select SDR display” 2406 by using, for example, a TV remote controller, the receiver 500 displays the SDR content broadcast selected by the user regardless of the default ES. A program or a program of HDR content broadcasting can be displayed on the display 527 by default.

Area 2403 is an area for displaying a lead line to a recording function when recording an SDR program and an HDR program in a program including a plurality of program data. The HDR content has a wider dynamic range than the SDR content, so that the recorded size of the recorded content tends to be larger. Therefore, as shown in FIG. 24A, the display may be devised so that the content to be recorded can be easily selected according to the preference of the user. For example, as shown in FIG. 24A, a display that recommends recording SDR content to a user who wants to reduce the recording size and a display that recommends recording HDR content to a user who wants to pursue beautiful display are displayed. May be.

FIG. 24B shows a case where the user selects the HDR content as the content to be displayed on the display unit 527 by default by pressing the button of “select HDR display” 2415 regardless of the default ES of the program in a program including a plurality of program data. Is a display example of. When the user selects “select HDR display” 2415, the area 2411 of the detailed information display 2410 is switched from the “SDR display” of the area 2401 of the detailed information display 2400 to the “HDR display”. At the same time, the area 2412, which is an area for displaying a program other than the programs displayed by default on the display 527, is switched from the “HDR display” in the area 2402 of the detailed information display 2400 to the “SDR display”. As a result, the HDR content selected by the user pressing the button 2415 is displayed on the display unit 527 by default regardless of the setting content of the default ES in the descriptor.

FIG. 25A is an example of the display contents of the recording list. Area 2501 shows the time zone of the program of the recording list displayed on the display unit 527. Area 2502 shows the current time. Area 2503 is an area for displaying a thumbnail of a program when the user puts the cursor on the program in the recording list. Below the place where the thumbnail is displayed, detailed information of the program is displayed. In the example of FIG. 25A, the cursor is on the program 2504, and the thumbnail of the program is displayed on 2503.

When a program including a plurality of program data is recorded, all the plurality of program data may be stored depending on the receiver. In this case, if the plurality of program data includes the HDR content broadcast, the recording list of the receiver that cannot recognize the HDR content broadcast does not display that the HDR content is recorded as shown in FIG. 25A. The program data displayed in the recording list of FIG. 25A can be referred to by the receiver 500 that is present on a home network to which a plurality of television receivers are connected and that can recognize HDR content broadcasts.

In this case, the receiver 500 capable of recognizing the HDR content broadcast uses the value of the component type in the component descriptor shown in the third embodiment or the second embodiment if the component type is not stored. By referring to the value of the transfer characteristic arranged in the VUI in the video encoding shown, it is possible to display that the HDR content is recorded.

FIG. 25B shows the HDR content as a result of the receiver 500 referring to the data in which the programs in the recording list of FIG. 25A are stored and referring to the value of the transfer characteristic arranged in the VUI in the video encoding of the program. This is an example of displaying that fact for a program found to be. In area 2515, detailed information of the program 2514 to which the cursor is pointing is described, and it is displayed that the program is HDR content broadcasting.

As described above, according to the present embodiment, it is possible to determine whether or not a recorded program is HDR content even for a recorded program.

Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the scope of equivalents thereof. Furthermore, in each of the constituent elements of the claims, the constituent elements are expressed in a divided manner, a plurality of them are expressed in combination, or a combination thereof is also included in the scope of the present invention. In addition, the device of the present invention is applied even when the claims are expressed as control logic, when expressed as a program including instructions for executing a computer, and when expressed as a computer-readable recording medium in which the instructions are described. is there. Further, the names and terms used are not limited, and other expressions are included in the present invention as long as they have substantially the same content and meaning.

200... Broadcasting station, 201... Broadcasting station server, 202... First security function, 203... First basic function, 210... Receiver, 211... Second basic function Function, 212... Second security function, 214... Application management function, 215... Application, 220... Display, 230... HDD, 301... Video encoder, 506... Video decoder, 521... Integrated controller, 527... Display device, 528... Speaker.

Claims (1)

A broadcast signal receiving method for receiving a broadcast signal in which a video signal, an audio signal and a transmission control signal are multiplexed,
The video signal of the transmission characteristic information inserted video usability information to movies image stream that specifies the dynamic range: disposed (Video_usablity_information VUI), the transmission control signal is arranged in a position different from the video stream, the transmission The control signal includes a video decoding control descriptor including information corresponding to the transmission characteristics in the VUI, and a component descriptor in which information for identifying an aspect ratio of a video and information indicating whether the video is an HDR content are arranged. Receives the multiplexed broadcast signal,
Obtain a multiplexed stream by demodulating the received signal,
Separating the video stream and the transmission control signal from the multiplexed stream,
Decoding the video stream to obtain the video signal,
The dynamic range of the video signal is grasped from the transmission characteristic information arranged in the VUI in the video stream,
A method of receiving a broadcast signal, characterized in that an aspect ratio of a video and whether the video is an HDR content are grasped from a component descriptor of the transmission control signal.

Images