JPH11187359A - Transmitting method and reproducing device of digital television broadcasting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To mitigate bus traffic by reducing the load on a CPU for identifying the reproducing system of a selected program. SOLUTION: In digital television broadcast a transmission multiple control signal 24 is added to a data packet including video and audio and a program information packet and a program information packet to transmit a transport stream(TS) where the data packet and the program information packet are multiplexed, a data signal by a reproducing signal on a receiving side is transmitted based on a previously fixed standard. System management identifying information 23 specifying the reproducing system is described in the signal 24 to be transmitted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission method for transmitting identification information of digital television signals having different reproduction systems on a receiving side in digital television broadcasting, and a reproducing apparatus for receiving the identification information.

[0002]

2. Description of the Related Art At present, CS broadcasting has been digitized in Japan, and the technical standards for digitizing CATV have been established. Furthermore, digitization of BS broadcasts and terrestrial broadcasts is in the stage of study, and as digitalization progresses, MPEG (Moving Picture Experts Group)
Video and audio data playback devices that comply with the
The latest MPEG textbook (ASCII, August 1, 1994)
Japanese first edition) and practical MPEG textbooks (ASCII, first edition issued on November 1, 1995) are known.

FIGS. 13 and 14 show the structures of video data and audio data respectively transmitted in conventional digital television broadcasting. Current CS
In digital broadcasting, video and audio data of a large number of program numbers 4 to 8 are multiplexed in units of packets in a band centered on a reception frequency of 12.5 GHz and transmitted as one transport stream. 13 and 14, the program numbers are limited to two, 1 and 3, for the sake of simplicity of description, and a case is described in which a program containing only video data and only audio data is transmitted as one transport stream. Indicated. Although the data structure of these packets and the standard for multiplexing are determined in detail by MPEG, only the particularly relevant parts will be described here.

In FIG. 13, reference numeral 101 denotes a TS header, which is a packet identifier (PI) for identifying a subsequent packet.
D). Reference numeral 102 denotes a packet of video data of program number 1 (channel 1).
By defining the PID in the S header 101 as k,
It can be recognized that the packet is a packet of the video data of the program number 1. 103 is the program number 3
It is a packet of (channel 3) video data, and by defining the PID in the TS header 101 of the packet as m, it can be recognized that the packet is a video data packet of program number 3. 104 is PES
(Packetized Elementary Stream) packet, and in this example, some pieces of video data of program number 1 that are divided and transmitted are integrated. Reference numeral 105 denotes a sequence header for designating a screen format and the like.
Reference numeral 106 denotes a GOP (Group of Pictures), which has a screen group structure including at least one coded screen (intra-frame coded screen) based on information closed only within the screen, and enables random access. Therefore, the P
ES packet 104 has sequence header 105 and GOP
The sequence header 105 describes identification information such as the number of horizontal pixels, the number of vertical lines, the aspect ratio, and the scanning method of the input signal. Thus, the video data of the program numbers 1 and 3 are multiplexed in packet units.

In FIG. 14, the same reference numerals as those in FIG. 13 denote the same or corresponding parts. In addition, audio PES packet 1
Reference numeral 04 includes the number of audio channels and identification information of sub-audio, and ancillary data (external data).
Thus, the audio data of the program numbers 1 and 3 are multiplexed in packet units. 107 is the program number 1
It is a packet of audio data of (channel 1), and by defining the PID in the TS header 101 as p, it can be recognized that the packet is a packet of audio data of program number 1. Reference numeral 108 denotes a packet of audio data of program number 3 (channel 3). By defining the PID in the TS header 101 as r, the packet can be recognized as an audio data packet of program number 3.

FIG. 15 is a block diagram showing a configuration of a transmitting side and a configuration of a reproducing apparatus in a conventional digital television broadcast transmitting method. In the figure, 200 is a transmitting side, and 300 is a receiving side (reproducing apparatus). Sender 200
, 111 is interlaced scan video data, 112 is progressive scan video data, and 113 is identification information, which discriminates interlaced scan video data 111 and progressive scan video data 112. A multiplexing unit 114 multiplexes data by adding identification information 113 to the interlaced scanning video data 111 and the sequential scanning video data 112. Reference numeral 115 denotes a transmission unit, which is the identification information 2 multiplexed by the multiplexing unit 114.
3 are transmitted. In the receiving side 300, a receiving unit 121 receives the interlaced scanning video data 111 and the progressive scanning video data 112 including the identification information 113 multiplexed and transmitted for the program broadcast from the transmitting side 200. That is, it receives the interlaced scan video data of the program program 1 and the progressive scan video data of the program program 3 shown in FIG. Reference numeral 122 denotes a separation unit that separates at least the interlaced scan video data 111, the sequentially scanned video data 112, and the identification information 113 received by the reception unit 121. Reference numeral 123 denotes a program selection unit that receives a program selection operation by a viewer and instructs the reception unit 121 and the separation unit 122 on the program. Examples of the program selection section 123 include a remote control for selecting a TV program, a channel button of a TV, and a mouse of a personal computer, which are widely used. Reference numeral 124 denotes an identification information storage unit that monitors the identification information 113 of the selected program at certain time intervals, determines the scanning method of the video data of the program, and sends the result to the command unit. Reference numeral 125 denotes an interlaced video data decoding unit, which is the interlaced scanning video data 11 separated by the separation unit 122.
1 and outputs a video. Reference numeral 126 denotes a progressive scan video data decoding unit which decodes the progressive scan video data 112 separated by the separation unit 122 and outputs a video. 1
An instruction unit 27 issues a decoding command to the interlaced video data decoding unit 125 in the case of the interlaced scanning system, and issues a decoding command to the progressive scanning video data decoding unit 126 in the case of the progressive scanning system. Finally, both the interlaced scan video data and the progressive scan video data are decoded and output as a video signal. Reference numeral 128 denotes a video display unit which displays a video based on the decoded video signal.

A normal digital television signal reproducing apparatus requires various components other than video data, for example, a decoding unit for decoding audio data, but performs similar processing. For simplicity, illustration in FIG. 15 is omitted. Therefore, next, a brief description will be given of a conventional digital television broadcast transmission method and the operation of the reproducing apparatus.
The identification of the scanning method will be described, and the same applies to the identification of the number of vertical lines, the number of horizontal pixels, and the aspect ratio, and the identification of multi-channel and multi-lingual, which are audio data information, and thus the description thereof is omitted.

First, the transmitting side 200 uses a sequence header 1 as identification information 113 for identifying the interlaced scanning video data 111 and the progressive scanning video data 112.
05 (see FIG. 13).
13), are added to the interlaced scan video data of the program number 1 and the progressive scan video data of the program number 3, and these are multiplexed by the multiplexing unit 114 as shown in FIG. And send this to
15 is transmitted.

Next, the receiving side (reproducing apparatus) 300 reproduces the video data in the following procedure. That is, when receiving a viewer's selection operation of a program, the program selection unit 123 instructs the reception unit 121 to select the program. The receiving unit 121 selects a designated program (program number), for example, video data of the program number 1, and converts the information received by the receiving unit 121 into the separating unit 1
Reference numeral 22 separates the video data into video data based on the program selection unit 123. The identification information storage unit 124 monitors a predetermined bit string of the sequence header of the video data separated by the separation unit 122 every certain period, detects 0, and recognizes that the designated program is the interlaced scanning method. I do. The command unit 127 issues a decoding instruction to the interlaced scanning video data decoding unit 125 based on the result determined by the identification information storage unit 124. Upon receiving the decoding instruction, the interlaced scanning video data decoding unit 125 decodes the video data of the program number 1 separated by the separating unit 122 by the interlaced scanning method and outputs the decoded data as a video signal. Using the video signal output from the scanning video data decoding unit 125 as an input signal, an image corresponding to the input signal is displayed on a screen. As described above, the conventional digital television broadcast transmission method and playback apparatus are configured and operate.

[0010]

However, in the conventional digital television broadcast transmitting method and reproducing apparatus, the identification information storage unit 124 of the receiving side 300 stores
As shown in FIG. 13, monitoring a predetermined bit string of a hierarchical sequence header places a heavy load on the CPU. Further, as described above, in order to identify the number of vertical lines, the number of horizontal pixels, and the aspect ratio of the selected program, as well as the number of audio channels and sub audio, which are audio data information, a great load is further imposed on the CPU. There is a problem that the bus traffic is congested.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and a digital television broadcast transmission method for reducing a load on a CPU for identifying a reproduction method of a selected program and reducing bus traffic. , And a playback device.

[0012]

In order to solve the above-mentioned problems, a digital television broadcast transmitting method according to the present invention (claim 1) is directed to a data packet including video and audio data packets and a program information packet. A transmission multiplex control signal is added to the transport stream (T) in which the data packet and the program information packet are multiplexed.
In digital television broadcasting transmitting S),
A data signal based on a reproduction method on the receiving side is transmitted based on a predetermined standard, and identification information for specifying the reproduction method is described in the transmission multiplex control signal and transmitted.

[0013] Further, according to the digital television broadcast transmitting method of the present invention (claim 2), in the digital television broadcast transmitting method according to the present invention, the data signal by the reproduction method is a progressive scanning method or an interlaced signal. A video data signal according to a scanning method, wherein the identification information identifies whether the scanning method is a progressive scanning method or an interlaced scanning method.

Further, according to the digital television broadcast transmitting method of the present invention (claim 3), in the digital television broadcast transmitting method according to the present invention, the data signal by the reproducing method is a plurality of types of vertical lines. A video data signal having one video format among the number of video formats, wherein the identification information specifies the number of vertical lines of the video format included in the video data signal.

[0015] In the digital television broadcast transmitting method according to the present invention (Claim 4), in the digital television broadcast transmitting method according to the first aspect, the data signal by the reproduction method may include a plurality of types of horizontal pixels. A video data signal having one of a plurality of video formats, wherein the identification information specifies the number of horizontal pixels of the video format included in the video data signal.

Further, according to the transmission method of digital television broadcasting according to the present invention (claim 5), in the transmission method of digital television broadcasting according to claim 1, the data signal according to the reproduction method has an aspect ratio of 16: 9 or 4: 3, and the identification information identifies whether the aspect ratio is 16: 9 or 4: 3.

Further, according to the digital television broadcast transmitting method of the present invention (claim 6), in the digital television broadcast transmitting method according to the present invention, the data signal by the reproduction method has a plurality of types of channels. Wherein the identification information identifies the number of channels of the audio data signal.

Further, according to the digital television broadcast transmitting method of the present invention (claim 7), in the digital television broadcast transmitting method according to the present invention, the data signal by the reproduction method is a sub-audio of a plurality of languages. Wherein the identification information identifies the language of the sub-speech included in the audio data signal.

Further, according to a digital television broadcast transmitting method according to the present invention (claim 8), in the digital television broadcast transmitting method according to claim 1, the data signal of the reproduction method is a progressive scanning method or an interlaced signal. One of a plurality of types of video formats having a vertical line number and a horizontal pixel number, and an aspect ratio of 16: 9 or 4: 3.
And a sound data signal having a sub-sound of one or more languages among a plurality of types of sub-sounds and a plurality of types of sub-sounds, wherein the identification information is In the video data signal, whether the scanning method is the progressive scanning method or the interlaced scanning method, the number of vertical lines and the number of horizontal pixels of the video format, and whether the aspect ratio is 16: 9 or 4: 3 And the number of channels of the audio signal and the language of the sub audio.

The digital television broadcast reproducing apparatus according to the present invention (claim 9) is a digital television broadcast reproducing apparatus, comprising: a digital television broadcast; a data signal packet and a data signal reproducing method on a receiving side based on a predetermined standard; Adding a transmission multiplex control signal to the program information packet,
A transport stream (TS) in which the data signal packet and the program information packet are multiplexed and transmitted.
A receiving unit for receiving the data signal and the transmission multiplex control signal, accepting selection of a program (program) by an external operator, and instructing a separating unit to specify a data signal of the program to be extracted. A program selection unit, a separation unit that extracts the data signal and the transmission multiplex control signal from an output of the reception unit based on an instruction from the program selection unit, and a transmission multiplex separated and extracted by the separation unit. A transmission multiplex control signal detection unit for detecting the identification information from the control signal, and a reproduction method of the data signal of the program extracted by the separation unit based on the identification information detected by the transmission multiplex control signal detection unit. A command unit that determines and issues a decoding command to a decoding unit corresponding to the playback method, and a separating unit according to the decoding command from the command unit. One or a plurality of decoding units for decoding data signals respectively corresponding to one or a plurality of reproduction systems to be separated and extracted, and an output unit for outputting or switching and outputting data signals from the one or a plurality of decoding units; It is provided with.

In the digital television broadcast reproducing apparatus according to the present invention (claim 10), the digital television broadcast preferably has at least one of a plurality of scanning systems including a progressive scanning system and an interlaced scanning system. A transmission multiplex control signal describing identification information for specifying the scanning method is added to the video data signal packet and the program information packet having the symbol, and the video data signal packet and the program information packet are multiplexed and transmitted. Device for receiving a transport stream (TS) to be received, a receiving unit for receiving the video data signal and the transmission control signal, and receiving a selection of a program (program) by an external operator and extracting the program to a separating unit. Program selecting section for instructing a video data signal of a program to be executed, and the program Based on an instruction from the local unit, a separation unit that extracts the video data signal and the transmission multiplex control signal from the output of the reception unit, and the identification information separated from the transmission multiplex control signal separated and extracted by the separation unit. Based on the transmission multiplex control signal detection unit to be detected and the identification information detected by the transmission multiplex control signal detection unit, the scanning method of the video data signal of the program extracted by the separation unit is determined, and the determined scanning is performed. A scanning command unit for issuing a decoding command to a decoding unit corresponding to the system, and a progressive scan video for decoding the video data signal of the sequential scanning system separated and extracted by the separation unit according to the decoding command from the scanning command unit. According to a data decoding unit and a decoding command from the scanning command unit,
An interlaced scanning video data decoding unit that decodes the interlaced scanning video data signal separated and extracted by the separation unit, and an output unit that switches and outputs video data signals from a plurality of decoding units corresponding to the scanning system. It is provided.

Further, the digital television broadcast reproducing apparatus according to the present invention (claim 11) can provide at least 1080 digital television broadcasts and 4 digital broadcasts in digital television broadcasts.
A transmission multiplex control signal describing identification information for specifying the number of effective vertical lines is added to a packet of a video data signal and a program information packet having one of the number of effective vertical lines of 80 lines. A reproducing apparatus for receiving a transport stream (TS) in which a packet of the video data signal and the program information packet are multiplexed and transmitted, and receives the video data signal and the transmission control signal. A reception unit, a program selection unit that receives selection of a program (program) by an external operator, and instructs a video data signal of a program to be extracted to the separation unit; A separation unit for extracting the video data signal and the transmission multiplex control signal from the output, and separation and extraction by the separation unit A transmission multiplex control signal detection unit for detecting the identification information from the transmission multiplex control signal obtained, and video data of a program extracted by the separation unit based on the identification information detected by the transmission multiplex control signal detection unit. A scanning command unit that determines the number of effective vertical lines of the signal and issues a decoding instruction to a decoding unit corresponding to the determined number of effective vertical lines;
A vertical line number 1080 video data decoding unit for decoding 1080 effective vertical line video data signals separated and extracted by the separation unit in accordance with a decoding command from the scanning command unit; and a decoding command from the scanning command unit. 480 video data decoders for decoding 480 video data signals having the number of effective vertical lines separated and extracted by the separation unit, and video data signals from a plurality of decoding units corresponding to the number of effective vertical lines. And an output unit for switching and outputting.

In the digital television broadcast reproducing apparatus according to the present invention (claim 12), one of the plurality of effective horizontal pixels of at least 1920 dots and 1440 dots in the digital television broadcast is provided. A transmission multiplex control signal describing identification information for specifying the number of effective horizontal pixels is added to the video data signal packet and the program information packet having the number of pixels, so that the video data signal packet and the program information packet are multiplexed. The transport stream (T
A reproducing unit for receiving the video data signal and the transmission control signal, receiving a selection of a program (program) by an external operator, and extracting the program (program) to a separating unit. And a separation unit for extracting the video data signal and the transmission multiplex control signal from the output of the reception unit based on an instruction from the program selection unit, and separation and extraction by the separation unit. A transmission multiplex control signal detection unit for detecting the identification information from the transmission multiplex control signal obtained, and video data of a program extracted by the separation unit based on the identification information detected by the transmission multiplex control signal detection unit. A scanning command unit for determining the number of effective horizontal pixels of the signal and issuing a decoding command to a decoding unit corresponding to the determined number of effective horizontal pixels; In accordance with these decoding instructions, a horizontal pixel number 1920 video data decoding unit that decodes a video data signal having 1920 effective horizontal pixels separated and extracted by the separation unit, and the separation unit according to a decoding instruction from the scan command unit. A horizontal pixel number 1440 video data decoding unit that decodes a video data signal of 1440 effective horizontal pixels separated and extracted by the unit, and video data signals from a plurality of decoding units corresponding to the effective horizontal pixel number are switched and output. And an output unit.

Further, the digital television broadcast reproducing apparatus according to the present invention (claim 13) can provide at least an aspect ratio of 16:
A transmission multiplex control signal describing identification information for specifying the aspect ratio is added to a packet of a video data signal and a program information packet having one aspect ratio among a plurality of aspect ratios of 9 and 4: 3. A playback apparatus for receiving a transport stream (TS) in which a packet of the video data signal and the program information packet are multiplexed and transmitted, the reception apparatus receiving the video data signal and the transmission control signal Unit, a program selection unit that receives selection of a program (program) by an external operator, and instructs the separation unit to specify a video data signal of a program to be extracted, and an output of the reception unit based on an instruction from the program selection unit. A separation unit that extracts the video data signal and the transmission multiplex control signal from A transmission multiplex control signal detection unit for detecting the identification information from the extracted transmission multiplex control signal, and a program extracted by the separation unit based on the identification information detected by the transmission multiplex control signal detection unit. A scan command unit that determines the aspect ratio of the video data signal and issues a decoding command to a decoding unit corresponding to the determined aspect ratio, and is separated and extracted by the separation unit according to the decoding command from the scan command unit. An aspect ratio 16: 9 video data decoding unit for decoding a video data signal having an aspect ratio of 16: 9, and an image having an aspect ratio of 4: 3 separated and extracted by the separation unit according to a decoding command from the scanning command unit. 4: 3 aspect ratio for decoding data signals
It comprises a video data decoding section and an output section for switching and outputting video data signals from a plurality of decoding sections corresponding to the aspect ratio.

In the digital television broadcast reproducing apparatus according to the present invention (claim 14), the digital television broadcast has a plurality of types of channels including at least two stereo channels and 5.1 multichannel channels. A transmission multiplex control signal describing identification information for specifying the number of channels is added to a packet of the audio data signal having one channel number and a program information packet, and the packet of the audio data signal and the program information packet are added. For receiving a transport stream (TS) multiplexed and transmitted, wherein the receiving unit receives the audio data signal and the transmission control signal, and receives selection of a program (program) by an external operator. , Which instructs the separation unit of the audio data signal of the program to be extracted A gram tuning unit, a separation unit that extracts the audio data signal and the transmission multiplex control signal from an output of the reception unit based on an instruction from the program tuning unit, and a transmission separated and extracted by the separation unit. A transmission multiplex control signal detection unit for detecting the identification information from the multiplex control signal; and a channel of the audio data signal of the program extracted by the separation unit based on the identification information detected by the transmission multiplex control signal detection unit. A scan command unit that determines the number of channels and issues a decoding command to a decoding unit corresponding to the determined number of channels; and two-channel audio data separated and extracted by the separation unit according to the decoding command from the scan command unit. A two-channel stereo audio data decoding unit for decoding a signal, and the 5.1 channel separated and extracted by the separation unit according to a decoding instruction from the scanning command unit. It comprises a 5.1-channel / multi-channel audio data decoding unit for decoding channel audio data signals, and an output unit for switching and outputting video data signals from a plurality of decoding units corresponding to the number of channels.

[0026] Further, according to the present invention (claim 15), a digital television broadcast reproducing apparatus is characterized in that, in a digital television broadcast, an audio data signal having sub-audio of one or more languages among sub-audios of a plurality of languages. A transmission multiplex control signal describing identification information for specifying the language of the one or more sub-audios is added to the packet and the program information packet, and the audio data signal packet and the program information packet are multiplexed. A reproducing apparatus for receiving a transport stream (TS) transmitted after being received, a receiving unit for receiving the audio data signal and the transmission control signal, and receiving selection of a program (program) and sub-audio by an external operator. , A program selecting unit for instructing an audio data signal of a sub audio channel of one language of a program to be extracted to a separating unit A separation unit that extracts the audio data signal and the transmission multiplex control signal from the output of the reception unit based on an instruction from the program tuning unit, and a separation and extraction unit that separates and extracts the transmission multiplex control signal from the separation unit. A transmission multiplex control signal detection unit that detects the identification information, and based on the identification information detected by the transmission multiplex control signal detection unit, determines the language of the sub-sound extracted by the separation unit, and determines A scanning command unit for issuing a decoding command to a corresponding decoding unit; and a plurality of sub-commands for decoding audio data signals respectively corresponding to a plurality of languages separated and extracted by the separation unit according to the decoding command from the scanning command unit. An audio data decoding unit; and an output unit for switching and outputting the audio data signals from the plurality of sub audio data decoding units.

[0027]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. (Embodiment 1) FIG. 1 is a block diagram showing a configuration of a transmitting side and a configuration of a reproducing apparatus in a digital television broadcast transmitting method according to Embodiment 1 of the present invention. In the figure, reference numeral 99 denotes a transmitting side.
Reference numeral 21 denotes a data signal, which is, for example, a video data signal of the interlaced scanning method of program number 1. Reference numeral 22 denotes a data signal, which is different from the data signal 21 and is, for example, a video data signal of a program number 3 of a progressive scanning method. Reference numeral 23 denotes system management identification information, for example, information for determining the interlaced scanning video data 111 and the progressive scanning video data 112. 24 is a transmission multiplexing control (TMCC, Transmission Multiplexing Configu
ration control) signal to which system management identification information 23 is added and multiplexed with data signals 21 and 22. Reference numeral 25 denotes a multiplexing unit, and the data signals 21 and 22
Then, the transmission multiplex control signal 24 to which the system management identification information 23 is added is multiplexed. Reference numeral 26 denotes a transmitting unit which transmits the data signals 21 and 22 multiplexed by the multiplexing unit 25 and including the system management identification information 23.

Reference numeral 100 denotes a receiving side (reproducing apparatus). With respect to the receiving side 100, reference numeral 1 denotes a receiving unit. 24 receives the multiplexed and transmitted data signals 21 and 22. Reference numeral 2 denotes a demultiplexing unit, which receives at least the data signal 21, the data signal 22, and the transmission multiplex control signal 24 received by the receiving unit 1.
Is separated. Reference numeral 3 denotes a program selection unit that receives a program selection operation by a viewer and instructs the reception unit 1 and the separation unit 2 on the program. As the program tuning section 3,
A remote control for selecting a TV program, a channel button of a TV, and a mouse of a personal computer, which are widely used, can be used. Reference numeral 4 denotes a transmission multiplex control signal detection unit which separates the transmission multiplex control signal 24 from the separation unit 2 and detects the system management identification information 23. A decoding unit 5 decodes and outputs the data signal 21 separated by the separation unit 2. Reference numeral 6 denotes a decoding unit, which is different from the decoding unit 5, and decodes and outputs the data signal 22 separated by the separation unit 2. Reference numeral 7 denotes a command unit which issues a reproduction command to the decoding units 5 and 6 based on information from the transmission multiplex control signal detection unit 4. For example, a decoding command is issued to the decoding unit 5 for the data signal 21, and a decoding command is issued to the decoding unit 6 for the data signal 22. Reference numeral 8 denotes a video display unit or an audio output unit that displays video or outputs audio based on the decoded data signal.

FIG. 2 is a data configuration diagram showing a configuration of transmission data in the digital television broadcast transmission method according to the first embodiment. In the figure, 10 is TMCC
A signal in which the synchronization period of transmission data (MPEG-TS packet) 1 byte × 48 slots (slot: absolute position of the packet in the frame) is replaced (however,
The first two slots are a frame synchronization signal), and a system management identifier for managing a data system is described.
A TS header 11 has the TMCC signal 10, a packet identifier (PID) for identifying a subsequent packet, and the like. Reference numeral 12 denotes a packet of the video data of the program number 1, and by defining the PID in the TS header 11 of the packet as k, the packet becomes the program number 1
Can be recognized. Reference numeral 13 denotes a packet of video data of program number 3, and by defining the PID in the TS header 11 of the packet as m, it is possible to recognize that the packet is a video packet of program number 3. Note that, in addition to the video data packets of the program numbers 1 and 3, program information packets are multiplexed in the TS (transport stream).

FIG. 3 is a diagram showing the structure of the TMCC signal. In the figure, reference numeral 31 denotes a frame synchronization signal in which the synchronization period (2 bytes = 16 bits) of the first two slots of the frame of the transmission data is replaced. 32 is the basic TM
CC, 30 bits, TMCC mode, head frame identification in superframe, number of transmission systems to be used,
Handles the content, type, and number of slots of the transmission method. Reference numeral 33 denotes a spare bit. In Embodiment 1 of the present invention,
A system management identifier is described using 8 bits of the spare bits. The system management identifier may be described using any spare bit, and the number of bits to be used shall be described according to the content of the system management identifier within 58 bits of the spare bit. Can be. Reference numeral 34 denotes a system management identifier, which manages a data system. 35 is a parity and uses 84 bits. 36 is an extended TMCC, 144 bits,
Specify the assigned TS number for each slot. 37 is 36
This is a bit tab symbol reservation. Thus, TMC
The C signal 10 is transmitted in a two-frame structure, and the total number of bits requires 384 bits.

FIG. 4 is a diagram showing an example of code assignment of the system management identifier used in the first embodiment. As shown in the drawing, codes 0 and 1 indicate whether the video types (scanning methods) of the program numbers 1 to 8 are interlaced scanning or sequential scanning, respectively. Here, in FIG. 4, the code indicating the interlaced scanning is set to 0, and the code indicating the sequential scanning is set to 1.
Another code is acceptable.

The operation of the digital television broadcast transmitting method and reproducing apparatus according to the first embodiment when the TMCC signal configured as described above is used will be described below.

FIG. 5 is a flowchart for explaining the operation of the digital television broadcast transmitting method and the reproducing apparatus according to the first embodiment. The operation in FIG. 1 will be described based on this flowchart. Here, FIG. 4 shows the video types (scanning methods) of eight programs that can be transmitted by one transport stream. Program). As shown in FIG. 4, the program of program number 1 is of the interlaced scanning type, and the program of program number 3 is of the sequential scanning type. Therefore, the data signal 21 in FIG. 1 is the data of the program number 1 and the data signal 22 is the data of the program number 3. The decoding unit 5 is an interlaced scanning video data decoding unit, and the decoding unit 6 is a progressive scanning video data decoding unit. Further, the video display unit or the audio output unit 8 becomes a video display unit.

First, the transmitting side 99 (steps 1 to 4) creates a data packet of program number 1 as the data signal 21 (step 1). That is, k is added to the head of the packet as the packet identifier PID, and interlaced scan data is inserted after that to create a packet of a fixed size. Here, the PID is k, but k is a constant. Also, a data packet of program number 3 is created as the data signal 22 (step 2).
That is, m is added to the head of the packet as the packet identifier PID, and data of the sequential scanning is inserted after the head to create a packet of a fixed size. Here, the PID is m, but m is a constant. Next, system management identification information 2
A transmission multiplex control (TMCC) signal 24 containing 3 is generated (step 3). That is, 0 is substituted into the system management identifier 24 of the program number 1 (see FIG. 3) as the skip scanning identification information, and 1 is substituted into the system management identifier 24 of the program number 3 as the identification information of the sequential scanning. Then, in the multiplexing unit 25, the data signals 21,
The data signal 22 and the transmission multiplex control signal 24 are multiplexed and transmitted (step 4). That is, 2 of the data of the program number 1 and the data of the program number 2
Each type of packet and the TMCC signal 24 are sized and multiplexed and transmitted.

Further, the receiving side 100 (steps 5 to 8)
Then, the above two types of packets and the TMCC signal 24 transmitted from the transmitting side 99 are received by the receiving unit 1 (step 5). The output signal from the receiving unit 1 is separated by the separating unit 2, and the transmission multiplex control signal detecting unit 4 decodes the identification information from the separated TMCC data (step 6). As a result, information that "the video type (scanning method) of the program number 1 is interlaced scanning" and "the video type (scanning method) of the program number 3 is sequential scanning" is detected. The program selection unit 3 receives a program selection from a viewer through a remote controller, a channel on a monitor, or the like (step 7). Here, the program of program number 1 is selected. The program tuning unit 3
The command unit 7 instructs the separation unit 2 to separate the program of the program number 1, and the command unit 7 decodes the information to the decoding unit 5 that performs interlaced scanning reproduction based on the information detected by the transmission multiplex control signal detection unit 4. (Step 8). Then, the data decoded by the decoding unit 3 is input to the video display unit 8 and reproduced on the screen. If the program with the program number 3 is selected, a decoding instruction is issued to the decoding unit 6 for reproducing the sequential scanning, and the program is reproduced in the same manner.

As described above, in the digital television broadcast transmitting method according to the first embodiment, the transmission multiplex control signal is added to the video data packet and the program information packet, and the TS in which these packets are multiplexed is transmitted. In digital television broadcasting, as data
A data signal whose reproduction method is the interlaced scanning method or the progressive scanning method is transmitted, and information for identifying whether the data is the sequential scanning method or the interlaced scanning method is described in the transmission multiplex control signal and transmitted. Since the receiving side extracts the information of the scanning method from the transmission multiplex control signal at the highest level on the receiving side, it is not necessary to monitor the bit string of the data which has been hierarchized, and the CPU is hardly loaded. You can do so.

(Embodiment 2) FIG. 6 is a diagram showing an example of code assignment of a system management identifier used in Embodiment 2. As shown in the drawing, codes 0 or 1 indicate whether the video types (number of vertical lines) of the program numbers 1 to 8 are 1080 or 480, respectively.

Here, in FIG. 6, the number of vertical lines is one.
A code indicating 080 lines is 0, and the number of vertical lines is 4.
The code indicating that the number is 80 is set to 1, but another code may be used as long as the difference between the code of 1080 vertical lines and the code of 480 vertical lines is known. In addition, the number of vertical lines is set to two types of 1080 lines and 480 lines. Therefore, the number of allocated bits is set to one bit. However, the number of allocated bits is not limited to this. The number of bits required to identify the type shall be allocated.

When the TMCC signal composed of the system management identifiers allocated as described above is used,
The operation of the digital television broadcast transmitting method and the reproducing apparatus according to the second embodiment will be described below.
The configuration on the transmitting side and the configuration of the reproducing apparatus in the digital television broadcast transmitting method according to the second embodiment are the same as those shown in FIG. The operation of the digital television broadcast transmitting method and the reproducing apparatus according to the second embodiment will be described with reference to FIG.

Here, FIG. 6 shows the video types (the number of vertical lines) of eight programs that can be transmitted by one transport stream. It shall be limited to two programs (programs). Also, as shown in FIG. 6, the program of program number 1 has a system of 1080 vertical lines, and the program of program number 3 has a system of 480 vertical lines. Therefore, the data signal 21 in FIG.
Is the data of program number 1 and the data signal 22 is the data of program number 3. The decoding unit 5 is a video data decoding unit having 1080 vertical lines, and the decoding unit 6 is a video data decoding unit having 480 vertical lines. Further, the video display unit or the audio output unit 8 becomes a video display unit.

First, on the transmitting side 99, as in the first embodiment, data packets of program numbers 1 and 3 are created as the data signal 21 and the data signal 22, respectively, and k is set as the packet identifier PID.
And m are added to the head of the packet, and video data is inserted after the head to create a packet of a fixed size. next,
Transmission multiplexing control (TM
CC) Create the signal 24. That is, the number of vertical lines 10 is added to the system management identifier of the program number 1 of TMCC.
Substituting 0 as the identification information of the 80 lines, the program number 3
Is substituted for the identification information of 480 vertical lines into the system management identifier of (1). Then, the multiplexing unit 25 multiplexes the data signal 21, the data signal 22, and the transmission multiplex control signal 24 and transmits them.

On the receiving side 100, the data transmitted from the transmitting side 99 is received by the receiving section 1 and output to the separating section 2. The transmission multiplex control signal detector 4 decodes the identification information data from the TMCC data separated by the separator 2. As a result, information that "the video type of program number 1 (the number of vertical lines) is 1080 lines" and "the video type of program number 3 (the number of vertical lines) is 480 lines" are detected. Next, in the program selection section 3,
A program selection from a viewer is received through a remote controller, a channel on a monitor, or the like. Here, the program of program number 3 is selected. The program selection unit 3 instructs the separation unit 2 to separate the program of the program number 3, and the command unit 7 uses the number of vertical lines 480 lines based on the information detected by the transmission multiplex control signal detection unit 4. Is instructed to the decoding unit 6 for reproducing the. Then, the data decoded by the decoding unit 6 is input to the video display unit 8 and reproduced on the screen. If the program selection unit 3 has accepted the selection of the program of the program number 1, the vertical line number 1080
A decoding instruction is issued to the decoding unit 5 that performs book playback, and the book is played back in the same manner.

As described above, in the digital television broadcast transmitting method according to the second embodiment, the transmission multiplex control signal is added to the video data packet and the program information packet, and the digital multiplex signal for transmitting a TS multiplexing these packets is transmitted. In television broadcasting, as data
The transmission method is to transmit data of which the number of vertical lines is 1080 or the number of vertical lines is 480, and the transmission multiplex control signal includes data of the number of vertical lines of 48 or more.
Since information for identifying whether the system is the zero-line system or the vertical line number 1080 line system is described and transmitted,
By extracting information on the number of vertical lines from the transmission multiplex control signal at the highest level on the receiving side, there is no need to monitor the bit sequence of the data that has been hierarchized,
The load on the CPU can be reduced.

(Embodiment 3) FIG. 7 is a diagram showing an example of code assignment of a system management identifier used in Embodiment 3. As shown in the drawing, codes 0 and 1 indicate whether the video type (the number of horizontal pixels) of the program numbers 1 to 8 is 1920 dots or 1440 dots, respectively.

Here, in FIG. 7, the code indicating that the number of horizontal pixels (horizontal pixels) is 1920 dots is set to 0, and the code indicating that the number of horizontal pixels is 1440 dots is set to 1, but the number of horizontal pixels is set to 1920 dots. When,
If a difference between the code and the horizontal pixel number of 1440 dots is known, another code may be used. Further, the number of horizontal pixels is set to two types of 1920 dots and 1440 dots, so the number of allocated bits is set to one bit. However, the number of allocated bits is not limited to this. The number of bits required to identify the type shall be allocated.

When the TMCC signal composed of the system management identifiers allocated as described above is used,
The operation of the digital television broadcast transmitting method and the reproducing apparatus according to the third embodiment will be described below.
The configuration on the transmitting side and the configuration of the reproducing apparatus in the digital television broadcast transmitting method according to the third embodiment are the same as those shown in FIG. The operation of the digital television broadcast transmitting method and the reproducing apparatus according to the third embodiment will be described with reference to FIG.

Here, FIG. 7 shows the video types (the number of horizontal pixels) of eight programs that can be transmitted by one transport stream. It shall be limited to two programs (programs). Also, as shown in FIG. 7, the program of program number 4 has a horizontal pixel number of 1440 dots, and the program of program number 7 has a horizontal pixel number of 192 dots.
A method of 0 dots is used. Therefore, the data signal 21 in FIG.
2 is the data of program number 7. Also, the decoding unit 5
Is a video data decoding unit having 1440 horizontal pixels,
The decoding unit 6 is a video data decoding unit having 1920 horizontal pixels. Further, the video display unit or the audio output unit 8 becomes a video display unit.

First, on the transmitting side 99, as in the first embodiment, packets of data of program numbers 4 and 7 are created as data signal 21 and data signal 22, respectively, and k is set as the packet identifier PID.
And m are added to the head of the packet, and video data is inserted after the head to create a packet of a fixed size. next,
Transmission multiplexing control (TM
CC) Create the signal 24. That is, the number of horizontal pixels is 1 in the system management identifier of the program number 4 of TMCC.
0 is substituted as identification information of 440 dots, and the number of horizontal pixels 1920 is assigned to the system management identifier of program number 7.
Substitute 1 as dot identification information. Then, the multiplexing unit 25 multiplexes the data signal 21, the data signal 22, and the transmission multiplex control signal 24 and transmits them.

On the receiving side 100, the data transmitted from the transmitting side 99 is received by the receiving section 1 and output to the separating section 2. The transmission multiplex control signal detector 4 decodes the identification information data from the TMCC data separated by the separator 2. Thus, “the video type (the number of horizontal pixels) of the program number 4 is 1440 dots”, and the “video type (the number of horizontal pixels) of the program number 7 is 1920”
"Dot" information is detected. Next, the program tuning section 3
Then, a program selection from a viewer is received through a remote controller, a channel on a monitor, or the like. Here, the program of program number 7 is selected. Program tuning section 3
Instructs the separating unit 2 to separate the program of the program number 7, and the command unit 7 outputs the transmission multiplex control signal detecting unit 4
Based on the information detected in step (1), the decoding unit 6 that reproduces 1920 dots of horizontal pixels is instructed to decode. And
The data decoded by the decoding unit 6 is input to the video display unit 8 and reproduced on the screen. If the program selection unit 3 has accepted the selection of the program with the program number 4, the decoding unit 5 that reproduces the horizontal pixel number of 1440 dots is instructed to perform decoding, and the program is reproduced in the same manner.

As described above, in the digital television broadcast transmitting method according to the third embodiment, the transmission multiplex control signal is added to the video data packet and the program information packet, and the TS in which these packets are multiplexed is transmitted. In digital television broadcasting, as data
A data signal whose reproduction method is the horizontal pixel number 1440 dot method or the horizontal pixel number 1920 dot method is transmitted, and the transmission multiplex control signal includes data in the horizontal pixel number 1440 dot method or the horizontal pixel number 1920 dot method. Since the information for identifying whether there is any is described and transmitted, by extracting the information of the number of horizontal pixels from the transmission multiplex control signal in the highest layer on the receiving side, the bit string of the deep layered data is obtained. The need for monitoring is eliminated, and the load on the CPU can be reduced.

(Embodiment 4) FIG. 8 is a diagram showing an example of code assignment of a system management identifier used in Embodiment 4. As shown in the drawing, codes 0 and 1 indicate whether the video types (aspect ratios) of the program numbers 1 to 8 are 16: 9 or 4: 3, respectively. Here, in FIG. 8, the aspect ratio is 16: 9.
Is 0, and the code indicating that the aspect ratio is 4: 3 is 1. However, the aspect ratio is 16:
As long as the difference between the code of 9 and the code of the aspect ratio of 4: 3 is known, another code may be used.

When the TMCC signal constituted by the system management identifier assigned as described above is used,
The operation of the digital television broadcast transmitting method and the reproducing apparatus according to the fourth embodiment will be described below.

The configuration of the transmitting side and the configuration of the reproducing apparatus in the digital television broadcast transmitting method according to the fourth embodiment are the same as those shown in FIG. The operation of the digital television broadcast transmitting method and the reproducing apparatus according to the fourth embodiment will be described with reference to FIG.

Here, FIG. 8 shows the video types (aspect ratios) of eight programs that can be transmitted by one transport stream, but the program numbers are 2 and 8 for simplicity of explanation. It is limited to one program (program). As shown in FIG. 8, the program with the program number 2 is in a format with an aspect ratio of 4: 3, and the program with a program number 8 is in a format with an aspect ratio of 16: 9. Therefore, the data signal 21 in FIG. 1 is the data of the program number 2 and the data signal 22 is the data of the program number 8. The decoding unit 5 has a video data decoding unit with an aspect ratio of 4: 3, and the decoding unit 6 has an aspect ratio of 1.
It becomes a 6: 9 video data decoding unit. Further, the video display unit or the audio output unit 8 becomes a video display unit.

First, on the transmitting side 99, packets of program numbers 2 and 8 are created as the data signal 21 and the data signal 22, respectively, as in the first embodiment, and k is set as the packet identifier PID.
And m are added to the head of the packet, and video data is inserted after the head to create a packet of a fixed size. next,
Transmission multiplexing control (TM
CC) Create the signal 24. That is, the aspect ratio 4:
0 is substituted for the identification information of 3 and 1 is substituted for the system management identifier of the program number 8 as the identification information of the aspect ratio 16: 9. Then, the multiplexing unit 25 multiplexes the data signal 21, the data signal 22, and the transmission multiplex control signal 24 and transmits them.

On the receiving side 100, the data transmitted from the transmitting side 99 is received by the receiving section 1 and output to the separating section 2. The transmission multiplex control signal detector 4 decodes the identification information data from the TMCC data separated by the separator 2. Thereby, “the video type (aspect ratio) of the program number 2 is 4: 3” and “the program number 8
Of the video type (aspect ratio) of 16: 9 "is detected. Next, the program selection unit 3 receives a program selection from a viewer through a remote controller, a channel on a monitor, or the like. Here, the program of program number 2 is selected. The program selection unit 3 instructs the separation unit 2 to separate the program of the program number 2, and the command unit 7 uses the information detected by the transmission multiplex control signal detection unit 4 to set the aspect ratio to 4: 3. Is instructed to the decoding unit 5 that reproduces. Then, the data decoded by the decoding unit 5 is input to the video display unit 8 and reproduced on the screen. If the program selection unit 3 has accepted the selection of the program with the program number 8, the decoding instruction is issued to the decoding unit 6 that performs the reproduction with the aspect ratio of 16: 9, and the program is reproduced in the same manner.

As described above, in the digital television broadcast transmitting method according to the fourth embodiment, the transmission multiplex control signal is added to the video data packet and the program information packet, and the TS in which these packets are multiplexed is transmitted. In digital television broadcasting, as data
The data 22 whose reproduction method is the 4: 3 aspect ratio or the 16: 9 aspect ratio is transmitted, and the transmission multiplex control signal includes the data having the aspect ratio of 4: 4.
Since information for identifying whether the system is of the 3 system or the 16: 9 aspect ratio is described and transmitted, the information of the aspect ratio is extracted from the transmission multiplex control signal at the highest level on the receiving side. This eliminates the need to monitor the bit string of the deeply layered data,
U can be hardly loaded.

(Fifth Embodiment) FIG. 9 is a diagram showing an example of code assignment of a system management identifier used in the fifth embodiment. As shown in the drawing, codes 0 and 1 indicate whether the audio types (number of channels) of the program numbers 1 to 8 are 5.1-channel multi-channel or 2-channel stereo, respectively.

Here, in FIG. 9, the code indicating that the audio channel is 5.1 is set to 0, and the code indicating that the audio channel is 2 is set to 1; If you know the difference between the codes, you can use another code. In addition, the number of channels is set to two types of 5.1 channels and two channels. Therefore, the number of allocated bits is set to one bit. However, the number of allocated bits is not limited to this. The number of bits required to identify the type shall be allocated.

When a TMCC signal composed of the system management identifiers allocated as described above is used,
The operation of the digital television broadcast transmitting method and the reproducing apparatus according to the fifth embodiment will be described below.

The configuration of the transmitting side and the configuration of the reproducing apparatus in the digital television broadcast transmitting method according to the fifth embodiment are the same as those shown in FIG. The operation of the digital television broadcast transmitting method and the reproducing apparatus according to the fifth embodiment will be described with reference to FIG.

Here, FIG. 9 shows the audio types (the number of channels) of eight programs that can be transmitted by one transport stream, but the program numbers are 1 and 6 for simplicity of explanation. It is limited to one program (program). Also, as shown in FIG. 9, the program of program number 1 is of the system with 5.1 channels, and the program of 6 is with the system of 2 channels.
Therefore, the data signal 21 in FIG. 1 is the data of the program number 1 and the data signal 22 is the data of the program number 6. The decoding unit 5 is an audio data decoding unit with 5.1 channels, and the decoding unit 6 is an audio data decoding unit with 2 channels. Further, the video display unit or the audio output unit 8 becomes an audio output unit.

First, on the transmitting side 99, the first to fourth embodiments
In the same manner as described above, data packets of program numbers 1 and 6 are created as data signals 21 and 22, respectively, p and r are added to the beginning of the packets as packet identifiers PID, and voice data is inserted after them. , Create a packet of a certain size. Next, a transmission multiplex control (TMCC) signal 24 including the system management identification information 23 is created. That is, TMCC
Is assigned as identification information of the number of channels 5.1 to the system management identifier of the program number 1, and 1 is assigned to the system management identifier of the program number 6 as identification information of the number of channels 2. Then, the multiplexing unit 25 multiplexes the data signal 21, the data signal 22, and the transmission multiplex control signal 24 and transmits them.

On the receiving side 100, the data transmitted from the transmitting side 99 is received by the receiving section 1 and output to the separating section 2. The transmission multiplex control signal detector 4 decodes the identification information data from the TMCC data separated by the separator 2. Thereby, “the audio type (the number of channels) of the program number 1 is the audio 5.1 channel”, and the “audio type (the number of channels) of the program number 6 is the audio 2”
Channel ”information is detected. Next, the program selection unit 3 receives a program selection from a viewer through a remote controller, a channel on a monitor, or the like. Here, the program of program number 1 is selected. The program selection unit 3 instructs the separation unit 2 to separate the program of the program number 1, and the command unit 7 outputs the sound 5.1 channel based on the information detected by the transmission multiplex control signal detection unit 4. Is instructed to the decoding unit 5 that reproduces. Then, the data decoded by the decoding unit 5 is input to the audio output unit 8 and reproduced by a speaker. If the program selection unit 3 has accepted the selection of the program with the program number 6, the audio 2
It issues a decoding instruction to the decoding unit 6 that reproduces the channel,
It is reproduced in the same way.

As described above, in the transmission method of digital television broadcasting according to the fifth embodiment, the transmission multiplex control signal is added to the audio data packet and the program information packet, and the TS in which these packets are multiplexed is transmitted. In digital television broadcasting, as data
In addition to transmitting the data whose reproduction method is the audio 5.1 channel method or the audio 2 channel method, the transmission multiplex control signal identifies whether the data is the audio 5.1 channel method or the audio 2 channel method. The information on the number of channels is extracted from the transmission multiplex control signal in the highest layer on the receiving side, so that it is not necessary to monitor the bit string of the deep layered data. , The load on the CPU can be reduced.

(Sixth Embodiment) FIG. 10 is a diagram showing an example of code assignment of a system management identifier used in the sixth embodiment. As shown in the drawing, codes 0 and 1 indicate whether the audio type (sub-audio) of the program numbers 1 to 8 is English broadcast or Japanese broadcast, respectively. In addition, as a case where the Japanese broadcast is a sub-audio, there is a case where an Italian movie or a French movie is broadcast in the main audio in its original language, and Japanese is broadcast as a sub-audio.

Here, the code indicating the English broadcast is set to 0, and the code indicating the Japanese broadcast is set to 1. However, if the difference between the English broadcast and the Japanese broadcast is found, another code is set. It can be code. In addition, in the bilingual broadcasting, the auxiliary sound is made into two kinds, English broadcasting and Japanese broadcasting, so the number of allocated bits is set to one bit. However, the number of allocated bits is not limited to this, and other foreign languages If the number of bits required for identification is allocated, or if the number of sub-audio channels is increased due to adoption of multilingual or the like, the number of bits required for identifying the language broadcast by the number of channels shall be allocated. .

When using the TMCC signal constituted by the system management identifier assigned as described above,
The operation of the digital television broadcast transmitting method and the reproducing apparatus according to the sixth embodiment will be described below.

The configuration on the transmitting side and the configuration of the reproducing apparatus in the digital television broadcast transmitting method according to the sixth embodiment are the same as those shown in FIG. The operation of the digital television broadcast transmitting method and the reproducing apparatus according to the sixth embodiment will be described with reference to FIG.

FIG. 10 shows the audio types (the number of channels) of eight programs that can be transmitted in one transport stream. It is limited to one program (program). Also, as shown in FIG. 10, the program of program number 4 has a sub-audio broadcast in English,
The program of the program number 5 has a sub-audio of Japanese broadcast. Therefore, the data signal 21 in FIG. 1 is the audio data of the program number 4, and the data signal 22 is the audio data of the program number 5. The decoding unit 5 is an audio data decoding unit for English broadcasting, and the decoding unit 6 is an audio data decoding unit for Japanese broadcasting. Further, the video display unit or the audio output unit 8 becomes an audio output unit.

First, on the transmitting side 99, the first to fifth embodiments are described.
In the same manner as described above, packets of data with program numbers 4 and 5 are created as data signals 21 and 22, respectively, p and r are added to the beginning of the packets as packet identifiers PID, and voice data is inserted after them. , Create a packet of a certain size. Next, a transmission multiplex control (TMCC) signal 24 including the system management identification information 23 is created. That is, TMCC
Is assigned as the identification information of the English broadcast to the system management identifier of the program number 4 and 1 is assigned to the system management identifier of the program number 5 as the identification information of the Japanese broadcast. Then, in the multiplexing unit 25, the data signals 21,
The data signal 22 and the transmission multiplex control signal 24 are multiplexed and transmitted.

On the receiving side 100, the data transmitted from the transmitting side 99 is received by the receiving section 1 and output to the separating section 2. The transmission multiplex control signal detector 4 decodes the identification information data from the TMCC data separated by the separator 2. Thereby, the information of "the audio type (sub-audio) of the program number 4 is English broadcast" and the information of "the audio type (sub-audio) of the program number 5 is Japanese broadcast" are detected.
Next, the program selection unit 3 receives a program selection from a viewer through a remote controller, a channel on a monitor, or the like. Here, the sub sound of the program of program number 5 is selected. The program selection unit 3 instructs the separation unit 2 to separate the sub-audio of the program with the program number 5, and the command unit 7 uses the information detected by the transmission multiplex control signal detection unit 4 to output the Japanese language. A decoding instruction is given to the decoding unit 6 that reproduces the broadcast. Then, the data decoded by the decoding unit 6 is input to the audio output unit 8 and reproduced by a speaker.

If the selection of the sub-audio of the program with the program number 4 is accepted by the program selection unit 3, the decoding instruction is issued to the decoding unit 5 for reproducing the English broadcast, and the program is reproduced in the same manner.

As described above, in the digital television broadcast transmitting method according to the sixth embodiment, the transmission multiplex control signal is added to the audio data packet and the program information packet, and the TS in which these packets are multiplexed is transmitted. In the transmission method of digital television broadcasting, data whose reproduction method is English broadcasting method and data which is Japanese broadcasting method are transmitted as data, and the transmission multiplex control signal includes Because the broadcast system or the English broadcast system is described and transmitted with information for identifying the same, by extracting the sub audio information from the transmission multiplex control signal at the highest level on the receiving side, Eliminates the need to monitor bit strings of deeply layered data, so that the CPU is hardly loaded Door can be.

(Embodiment 7) FIG. 11 shows a structure of a TMCC signal. In the figure, the same reference numerals as those in FIG. 3 denote the same or corresponding parts. Similarly to FIG. 3, reference numeral 34 denotes a system management identifier which manages the data system and
Although the spare bits of C are used, 48 bits are used in the seventh embodiment. If it is a spare bit,
You can use anywhere.

FIG. 12 is a diagram showing an example of code assignment of a system management identifier used in the seventh embodiment.
As shown in the figure, program numbers 1 to 8 (program number 2
Codes 0 and 1 indicate the video type (scanning method, number of vertical lines, number of horizontal pixels, and aspect ratio) and audio type (number of channels and sub-audio) for (.about.7 are omitted). For example, program number 1
Information is interlaced scanning / vertical line number 1080
Book / number of horizontal pixels 1920 dots / aspect ratio 16: 9
/ Audio 5.1 channel / English broadcast, the system management identifier of program number 1 can be represented by “000000”.

Here, interlaced scanning, the number of vertical lines is 10
80 lines, 1920 horizontal pixels, 16: 9 aspect ratio, 5.1 ch audio channel, 0 code indicating that the sub audio is English broadcast, sequential scanning, 480 vertical lines, 1440 horizontal pixels , The aspect ratio is 4: 3, the number of audio channels is 2ch, and the code indicating that the sub audio is Japanese broadcast is defined as 1.
Other codes may be used as long as the difference between these video types and audio types is known.

Further, as in the first to sixth embodiments, the number of allocated bits is set to 1 since each video type and each audio type are set to two types. However, the number of allocated bits is not limited to this. If the number of types increases, the number of bits required to identify the type is allocated.

When the TMCC signal constituted by the system management identifier assigned as described above is used,
The operation of the digital television broadcast transmitting method and the reproducing apparatus according to the seventh embodiment will be described below.

The configuration of the transmitting side and the configuration of the reproducing apparatus in the digital television broadcast transmitting method according to the seventh embodiment are the same as those shown in FIG. An audio data signal is required, and a decoder corresponding to each video type and each audio type is required,
Other components are the same. The operation of the digital television broadcast transmitting method and the reproducing apparatus according to the sixth embodiment will be described with reference to FIG.

FIG. 12 shows eight programs transmitted in one transport stream.
Although the system management identifier is assigned to the video type (scanning method, number of vertical lines, number of horizontal pixels, and aspect ratio) and audio type (number of channels and sub-audio) of program numbers 1 to 8, the explanation is simple. Therefore, the operation of the playback apparatus will be described by limiting the program numbers to two programs (programs) 1 and 8.

As shown in FIG. 12, the program of program 1 is interlaced scanning / 1080 vertical lines / 1920 horizontal pixels / 16: 9 aspect ratio.
5.1 channel audio / sub audio is English broadcast system, and program 8 program is interlaced scanning / 1080 vertical lines / 1440 horizontal pixels / aspect ratio 16: 9 / audio 2 channel / sub audio in Japan It is a language broadcast system.

First, on the transmitting side 99, as a data signal,
For each of program numbers 1 and 8, a packet of video data and a packet of audio data are created, and video data of program number 1, video data of program number 8, audio data of program number 1, and audio data of program number 8 are created. Each packet is given a PID of k, m, p, and r at the beginning of the packet to create a packet of a fixed size. Next, a transmission multiplex control (TMCC) signal 24 containing the system management identification information 23 is created. That is, the skip management / number of vertical lines 1080 is added to the system management identifier of the program number 1 of the TMCC.
Book / number of horizontal pixels 1920 dots / aspect ratio 1
6: 9 / audio 5.1 channel / sub audio substitutes "000000" as identification information of the English broadcast system, and skips scanning / vertical line number 1080 lines / horizontal pixel number 1440 dots to the system management identifier of program number 8 /
Aspect ratio 16: 9 / audio 2 channel / sub audio substitutes “110100” as the identification information of the Japanese broadcast system. The multiplexing unit 25 multiplexes the video data packet, the audio data packet, and the transmission multiplex control signal 24 and transmits them. Note that the program information packet is also multiplexed.

On the receiving side 100, the data transmitted from the transmitting side 99 is received by the receiving section 1 and output to the separating section 2. The transmission multiplex control signal detector 4 decodes the identification information data from the TMCC data separated by the separator 2. Thus, “program number 1: interlaced scanning / vertical line number 1080 lines / horizontal pixel number 19
20 dots / Aspect ratio 16: 9 / Sound 5.1 channel / Sub sound is English broadcast "," Program number 3: Interlaced scanning / 1080 vertical lines / Horizontal pixel 1
440 dots / aspect ratio 16: 9 / audio 2 channel / sub audio is Japanese broadcast ". Next, the program selection unit 3 receives a program selection from a viewer through a remote controller, a channel on a monitor, or the like. Here, the program of program number 1 is selected. The program selection unit 3 sends the program number 1 to the separation unit 2.
And the command unit 7 performs interlaced scanning, 1080 vertical lines, and 1 horizontal pixel based on the information detected by the transmission multiplex control signal detection unit 4.
920 dots, an aspect ratio of 16: 9, a sound of 5.1 channel, and a sub sound are instructed to a decoding unit that reproduces English broadcast. The video data decoded by the decoding unit is displayed on a screen by a video display unit, and the audio data is input to an audio output unit and reproduced by a speaker.

If the program selection unit 3 has accepted the selection of the program with the program number 8, the interlaced scanning, the number of vertical lines 1080, the number of horizontal pixels 14
Forty dots, an aspect ratio of 16: 9, two audio channels, and sub audio are instructed to be decoded by a decoding unit that reproduces Japanese broadcasts, and are reproduced in the same manner.

Thus, in the transmission method of digital television broadcasting according to the seventh embodiment, the transmission multiplex control signal is added to the audio data packet and the program information packet, and the TS multiplexed with these packets is transmitted. In the transmission method of digital television broadcasting, the data is reproduced in an interlaced scanning method or a progressive scanning method, and the number of vertical lines is 1080 or 480.
Book, 1920 or 1440 horizontal pixels, 16: 9 or 4: 3 aspect ratio, 5.1 or 2 audio channels, and data whose sub-audio is English or Japanese. In the transmission multiplex control signal, data is interlaced scanning method or progressive scanning method, 1080 or 480 vertical lines, 1920 pixels or 1 horizontal pixel.
440 dots, aspect ratio 16: 9 or 4: 3
The number of audio channels is 5.1 or 2, and information for identifying whether the sub-audio is in the English broadcast system or the Japanese broadcast system is described and transmitted. By extracting the information of the reproduction method from the control signal, it is not necessary to monitor the bit string of the data which has been hierarchized, so that the load on the CPU can be reduced.

[0087]

As described above, according to the present invention (claim 1), a transmission multiplex control signal is added to a data packet including a video and audio data packet and a program information packet, and the data packet and the program In digital television broadcasting for transmitting a transport stream (TS) in which information packets are multiplexed, a data signal is transmitted by a reproduction method on a receiving side based on a predetermined standard, and the transmission multiplex control is performed. Since the identification information for specifying the reproduction method is described in the signal and transmitted, it is necessary to monitor the bit string of the data which has been hierarchized by extracting the reproduction method information from the highest layer on the receiving side. Is eliminated, and the load on the CPU is hardly applied.

According to the present invention (claim 2), in the digital television broadcast transmitting method according to claim 1, the data signal according to the reproducing method is a video data signal according to a progressive scanning method or an interlaced scanning method. Since the identification information is used to identify whether the scanning method is the progressive scanning method or the interlaced scanning method, the receiving side extracts the scanning method information from the highest level on the receiving side. There is no need to monitor the bit string of the hierarchized data, and there is an effect that the load on the CPU is hardly applied.

Further, according to the present invention (claim 3), in the digital television broadcast transmitting method according to claim 1, the data signal according to the reproduction method is one of a plurality of types of video formats of the number of vertical lines. A video data signal having one video format, and the identification information specifies the number of vertical lines of the video format included in the video data signal. By extracting the information, there is no need to monitor the bit string of the data that has been hierarchized, and there is an effect that the load on the CPU can be reduced.

Further, according to the present invention (claim 4), in the transmission method of digital television broadcast according to claim 1, the data signal by the reproduction method is one of a plurality of types of video formats having the number of horizontal pixels. A video data signal having one video format, and the identification information specifies the number of horizontal pixels of the video format included in the video data signal. By extracting the information, there is no need to monitor the bit string of the data that has been hierarchized, and there is an effect that the load on the CPU can be reduced.

Further, according to the present invention (claim 5), in the digital television broadcast transmitting method according to claim 1, the data signal by the above-mentioned reproduction method has an aspect ratio of 16: 9 or 4: 3. In the video data signal, since the identification information identifies whether the aspect ratio is 16: 9 or 4: 3, the information on the aspect ratio is extracted from the highest layer on the receiving side. This eliminates the need to monitor the bit string of the data that has been hierarchized, and has the effect of reducing the load on the CPU.

[0092] According to the present invention (claim 6), in the digital television broadcast transmitting method according to claim 1, the data signal by the reproducing method is one of a plurality of types of channels. Since the identification information identifies the number of channels of the audio data signal, the receiving side extracts the information of the number of audio channels from the highest level on the receiving side to form a deep layer. There is no need to monitor the bit string of the converted data, and there is an effect that the load on the CPU is hardly applied.

[0093] According to the present invention (claim 7), in the digital television broadcast transmitting method according to claim 1, the data signal by the reproducing method is one or more of sub-audios of a plurality of languages. A voice data signal having a language sub-speech, wherein the identification information identifies the language of the sub-speech included in the voice data signal, so that the sub-speech information is extracted from the highest hierarchy on the receiving side. This eliminates the need to monitor the bit string of the data that has been hierarchized, and has the effect of minimizing the load on the CPU.

Further, according to the present invention (claim 8), in the digital television broadcast transmitting method according to claim 1, the data signal of the reproduction method is a data signal of a progressive scanning method or an interlaced scanning method. One of a plurality of types of video formats having the number of vertical lines and the number of horizontal pixels, a video data signal having an aspect ratio of 16: 9 or 4: 3, and one channel of a plurality of types of channels An audio data signal having sub-audio of one or more languages out of the number and sub-audio of a plurality of languages, wherein the identification information indicates whether the scanning method in the video data signal is a progressive scanning method or a skipping method. Whether the scanning method is used, the number of vertical lines and the number of horizontal pixels of the video format, and the aspect ratio is 1
Since it is specified whether the ratio is 6: 9 or 4: 3, and the number of channels and the language of the sub-audio included in the audio signal are specified, the scanning method, the vertical line, and the vertical line are selected from the highest level on the receiving side. By extracting the information of the system, the number of horizontal pixels, the aspect ratio, the number of audio channels, and the sub-audio, it is not necessary to monitor the bit string of the data which has been hierarchized, so that the load on the CPU can be reduced. effective.

Further, according to the present invention (claim 9), in digital television broadcasting, transmission multiplexing control is performed on a data signal packet and a program information packet based on a predetermined standard by a reproduction method on a receiving side. A reproduction apparatus for receiving a transport stream (TS) that adds a signal and multiplexes a packet of the data signal and the program information packet and transmits the multiplexed signal, and receives the data signal and the transmission multiplex control signal. A receiving unit that performs
A program selecting unit for receiving a selection of a program (program) by an external operator and instructing a separating unit to specify a data signal of a program to be extracted; and a data signal from an output of the receiving unit based on an instruction from the program selecting unit. A separation unit that extracts the transmission multiplex control signal and the transmission multiplex control signal, a transmission multiplex control signal detection unit that detects the identification information from the transmission multiplex control signal separated and extracted by the separation unit, and a transmission multiplex control signal detection unit. A command unit for determining a reproduction method of the data signal of the program extracted by the separation unit based on the detected identification information and issuing a decoding instruction to a decoding unit corresponding to the reproduction method; One or a plurality of data signals respectively corresponding to one or a plurality of reproduction methods separated and extracted by the separation unit in accordance with the decoding instruction from Since the decoding unit and the output unit for outputting or switching and outputting the data signal from the one or more decoding units are provided, the information of the reproduction method is taken out from the highest hierarchy, so that the deep hierarchy is obtained. There is no need to monitor the bit string of the converted data, and the load on the CPU can be reduced.

Further, according to the present invention (claim 10), in digital television broadcasting, a packet of a video data signal having at least one of a plurality of scanning systems including a progressive scanning system and an interlaced scanning system. And a transmission multiplex control signal describing identification information for specifying the scanning method is added to the program information packet, and a transport stream (TS) in which the video data signal packet and the program information packet are multiplexed and transmitted. A receiving unit for receiving the video data signal and the transmission control signal, receiving a selection of a program (program) by an external operator, and transmitting a video data signal of the program to be extracted to the separating unit. A program selecting unit to instruct, and the receiving unit based on an instruction from the program selecting unit. A separation unit that extracts the video data signal and the transmission multiplex control signal from an output; a transmission multiplex control signal detection unit that detects the identification information from the transmission multiplex control signal separated and extracted by the separation unit; Based on the identification information detected by the multiplex control signal detection unit, determine the scanning method of the video data signal of the program extracted by the separation unit, and issue a decoding instruction to the decoding unit corresponding to the determined scanning method. A scanning command section for outputting, a progressive scanning video data decoding section for decoding the video data signal of the progressive scanning method separated and extracted by the separation section according to a decoding command from the scanning command section, and a decoding from the scanning command section. An interlaced scanning video data decoding unit for decoding the interlaced scanning video data signal separated and extracted by the separation unit according to the instruction; An output unit for switching and outputting video data signals from a plurality of decoding units is provided, so that information of the scanning method is taken out from the highest hierarchy to monitor a bit string of data that has been hierarchized. This eliminates the necessity and has the effect that the load on the CPU can be reduced.

Further, according to the present invention (claim 11), at least 108
Transmission multiplexing in which identification information for specifying the number of valid vertical lines is described in a packet of a video data signal and a program information packet having one of the number of valid vertical lines of 0 and 480 lines. A reproducing apparatus for receiving a transport stream (TS) to which a control signal is added and a packet of the video data signal and the program information packet are multiplexed and transmitted, wherein the video data signal and the transmission control signal are transmitted. Receiving section, receiving a selection of a program (program) by an external operator, instructing the separation section to instruct a video data signal of a program to be extracted, and a program selecting section based on an instruction from the program selecting section. A separating unit that extracts the video data signal and the transmission multiplex control signal from an output of a receiving unit; The transmission multiplex control signal detecting section for detecting the identification information from the extracted transmission multiplex control signal, and the identification information detected by the transmission multiplex control signal detecting section, A scanning instruction unit for determining the number of effective vertical lines of the video data signal of the program and issuing a decoding instruction to a decoding unit corresponding to the determined number of effective vertical lines; and a separation unit according to the decoding instruction from the scanning instruction unit. The vertical line number 1080 video data decoding unit that decodes 1080 video data signals separated and extracted by the effective vertical line, and the effective vertical line separated and extracted by the separation unit in accordance with the decoding command from the scan command unit. A video data decoding unit for 480 vertical lines for decoding a video data signal having 480 lines, and video signals from a plurality of decoding units corresponding to the number of effective vertical lines. Since the configuration is provided with an output unit for switching and outputting a data signal, by extracting information on the number of vertical lines from the highest hierarchy, there is no need to monitor a bit string of data having a deep hierarchy, and the CPU is not required. There is an effect that almost no load is applied.

Further, according to the present invention (claim 12), at least 192
Transmission multiplexing in which identification information for specifying the number of effective horizontal pixels is described in a packet of a video data signal and a program information packet having one effective horizontal pixel number among a plurality of effective horizontal pixel numbers consisting of 0 dots and 1440 dots. A reproducing apparatus for receiving a transport stream (TS) to which a control signal is added and a packet of the video data signal and the program information packet are multiplexed and transmitted, wherein the video data signal and the transmission control signal are transmitted. Receiving section, receiving a selection of a program (program) by an external operator, instructing the separation section to instruct a video data signal of a program to be extracted, and a program selecting section based on an instruction from the program selecting section. A separation unit that extracts the video data signal and the transmission multiplex control signal from an output of a reception unit; The transmission multiplexing control signal detection unit that detects the identification information from the transmission multiplexing control signal separated and extracted by the separation unit, and the separation information based on the identification information detected by the transmission multiplexing control signal detection unit. A scan command unit that determines the number of effective horizontal pixels of the video data signal of the extracted program, and issues a decode command to a decoding unit corresponding to the determined number of effective horizontal pixels, according to a decode command from the scan command unit, A horizontal pixel number 1920 video data decoding unit for decoding a video data signal having an effective horizontal pixel number 1920 dots separated and extracted by the separation unit, and a separation / extraction performed by the separation unit according to a decoding command from the scan command unit. 14 effective horizontal pixels
Because it has a configuration including a horizontal pixel number 1440 video data decoding unit for decoding a 40 dot video data signal and an output unit for switching and outputting video data signals from a plurality of decoding units corresponding to the effective horizontal pixel number. By extracting the information on the number of horizontal pixels from the highest level, there is no need to monitor the bit sequence of the deeply layered data,
There is an effect that the load is hardly applied to the CPU.

According to the present invention (claim 13), in a digital television broadcast, an image having at least one aspect ratio among a plurality of aspect ratios consisting of an aspect ratio of 16: 9 and an aspect ratio of 4: 3. A transmission multiplex control signal describing identification information for specifying the aspect ratio is added to the data signal packet and the program information packet, and the video data signal packet and the program information packet are multiplexed and transmitted. A reproducing apparatus for receiving a port stream (TS), comprising: a receiving section for receiving the video data signal and the transmission control signal; and a program for receiving a selection of a program (program) by an external operator and extracting the program to a separating section. A program tuner that indicates a video data signal, and an instruction from the program tuner A separation unit for extracting the video data signal and the transmission multiplex control signal from an output of the reception unit based on the transmission multiplex control for detecting the identification information from the transmission multiplex control signal separated and extracted by the separation unit A signal detection unit that determines an aspect ratio of the video data signal of the program extracted by the separation unit based on the identification information detected by the transmission multiplex control signal detection unit, and decodes the video data signal corresponding to the determined aspect ratio; A scanning command unit for issuing a decoding command to the unit, and a decoding command from the scanning command unit,
Aspect ratio 1 separated and extracted by the separation unit
Aspect ratio for decoding 6: 9 video data signal 16: 9
An image data decoding unit for decoding an image data signal having an aspect ratio of 4: 3 separated and extracted by the separation unit in accordance with a decoding instruction from the scanning command unit; And an output unit for switching and outputting the video data signals from the plurality of decoding units corresponding to the ratios. By extracting the aspect ratio information from the highest hierarchy, There is no need to monitor bit strings, and CPU
There is an effect that almost no load is applied.

Further, according to the present invention (claim 14), in digital television broadcasting, one of a plurality of types of channels consisting of at least two channels of stereo and 5.1 channels of multi-channels is used. A transmission multiplex control signal describing identification information for specifying the number of channels is added to the audio data signal packet and the program information packet, and the audio data signal packet and the program information packet are multiplexed and transmitted. And a receiving unit for receiving the audio data signal and the transmission control signal, receiving a selection of a program (program) by an external operator, and extracting the program to a separating unit. A program tuner for instructing an audio data signal of the program, and the program tuner A separation unit that extracts the audio data signal and the transmission multiplex control signal from the output of the reception unit based on the instructions, and detects the identification information from the transmission multiplex control signal separated and extracted by the separation unit. A transmission multiplexing control signal detecting unit that determines the number of channels of the audio data signal of the program extracted by the demultiplexing unit based on the identification information detected by the transmission multiplexing control signal detecting unit; And a two-channel stereo audio signal for decoding the two-channel audio data signal separated and extracted by the separation unit according to the decoding instruction from the scanning instruction unit. 4. Decode the 5.1-channel audio data signal separated and extracted by the separation unit according to the data decoding unit and the decoding instruction from the scanning command unit. Since the configuration includes a channel / multi-channel audio data decoding unit and an output unit for switching and outputting video data signals from a plurality of decoding units corresponding to the number of channels, information on the number of audio channels from the highest hierarchy , There is no need to monitor the bit string of the data that has been hierarchized, and C
There is an effect that the load is hardly applied to the PU.

According to the present invention (claim 15), in digital television broadcasting, a packet of an audio data signal and a program information packet having sub-audio of one or more languages out of sub-audios of a plurality of languages are added. A transport multiplex control signal describing identification information for specifying a language of the sub-audio of the one or more languages, and a packet in which the audio data signal packet and the program information packet are multiplexed and transmitted. A playback device for receiving a stream (TS), which receives a selection of a program (program) and sub-audio by an external operator and receives the audio data signal and the transmission control signal, and should extract to a separation unit. A program tuning unit for designating an audio data signal of one sub audio channel of the program, based on an instruction from the program tuning unit; A separation unit that extracts the audio data signal and the transmission multiplex control signal from an output of the reception unit; and a transmission multiplex control signal detection unit that detects the identification information from the transmission multiplex control signal separated and extracted by the separation unit. And, based on the identification information detected by the transmission multiplex control signal detection unit, determines the language of the one sub-sound extracted by the separation unit, and issues a decoding instruction to the decoding unit corresponding to the language. A scanning command unit for outputting, a plurality of sub audio data decoding units for decoding audio data signals respectively corresponding to a plurality of languages separated and extracted by the separation unit according to a decoding command from the scanning command unit, and a plurality of sub audio data decoding units. And an output section for switching and outputting the audio data signal from the audio data decoding section. It is not necessary to monitor the bit sequence of data, there is an effect that can be made to load the CPU is hardly applied.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a transmission side and a configuration of a playback device in a digital television broadcast transmission method according to a first embodiment of the present invention.

FIG. 2 is a data configuration diagram showing a configuration of transmission data in a digital television broadcast transmission method according to Embodiment 1 of the present invention.

FIG. 3 shows a TMCC used in Embodiment 1 of the present invention.
FIG. 3 is a diagram illustrating a configuration of a signal.

FIG. 4 is a diagram showing an example of code assignment of a system management identifier used in the first embodiment of the present invention.

FIG. 5 is a flowchart for explaining operations in a digital television broadcast transmitting method and a reproducing apparatus according to the first embodiment of the present invention.

FIG. 6 is a diagram showing an example of code assignment of a system management identifier used in Embodiment 2 of the present invention.

FIG. 7 is a diagram showing an example of code assignment of a system management identifier used in Embodiment 3 of the present invention.

FIG. 8 is a diagram showing an example of code assignment of a system management identifier used in Embodiment 4 of the present invention.

FIG. 9 is a diagram showing an example of code assignment of a system management identifier used in Embodiment 5 of the present invention.

FIG. 10 is a diagram showing an example of code assignment of a system management identifier used in Embodiment 6 of the present invention.

FIG. 11 shows a TMC used in Embodiment 7 of the present invention.
FIG. 3 is a diagram illustrating a configuration of a C signal.

FIG. 12 is a diagram showing an example of code assignment of a system management identifier used in Embodiment 7 of the present invention.

FIG. 13 is a diagram showing a configuration of video data to be transmitted in a conventional digital television broadcast transmission method.

FIG. 14 is a diagram showing a configuration of audio data to be transmitted in a conventional digital television broadcast transmission method.

FIG. 15 is a block diagram showing a configuration of a transmission side and a configuration of a playback device in a conventional digital television broadcast transmission method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Receiving part 2 Separation part 3 Program tuning part 4 Transmission multiplex control signal detection part 5, 6 Decoding part 7 Command part 8 Video display part or audio output part 10 TMCC signal 11 TS header 12 Data of program number 1 13 Program number 3 Data 21, 22 Data signal 23 System management identification information 24 Transmission multiplex control signal 25 Multiplexer 26 Transmitter 31 Frame synchronization signal 32 Basic TMCC 33 Reserved bits 34 System management identifier 35 Parity 36 Extended TMCC 37 Tab 99 Transmitter 100 Receiver 101 TS header 102 Video data of program number 1 103 Video data of program number 3 104 Payload 105 Sequence header 106 GOP 107 Audio data of program number 1 108 Audio data of program number 3 Interlaced scanning video data 112 Sequential scanning video data 113 Identification information 114 Multiplexing unit 115 Transmitting unit 121 Receiving unit 122 Separating unit 123 Program tuning unit 124 Identification information storage unit 125 Interlaced scanning video data decoding unit 126 Sequential scanning video data decoding unit 127 Command Unit 128 video display unit 200 transmitting side 300 receiving side

Claims (15)

[Claims] 1. A transmission multiplex control signal is added to a data packet including video and audio data packets and a program information packet, and a transport stream (TS) in which the data packet and the program information packet are multiplexed is transmitted. In a digital television broadcast to be transmitted, a data signal is reproduced according to a reproduction method on the receiving side based on a predetermined standard, and identification information for specifying the reproduction method is described in the transmission multiplex control signal and transmitted. A method for transmitting digital television broadcasts, characterized in that: 2. The digital television broadcast transmitting method according to claim 1, wherein the data signal according to the reproduction method is a video data signal according to a progressive scanning method or an interlaced scanning method, and the identification information is the scanning method. A digital television broadcast transmitting method for identifying whether a digital signal is a progressive scanning method or an interlaced scanning method. 3. The digital television broadcast transmission method according to claim 1, wherein the data signal according to the reproduction method is a video data signal having one of a plurality of types of video formats having the number of vertical lines. The transmission method of digital television broadcasting, wherein the identification information specifies the number of vertical lines of a video format included in the video data signal. 4. The digital television broadcast transmission method according to claim 1, wherein the data signal according to the reproduction method is a video data signal having one of a plurality of types of video formats having the number of horizontal pixels. The transmission method of digital television broadcasts, wherein the identification information specifies the number of horizontal pixels of a video format included in the video data signal. 5. The digital television broadcast transmitting method according to claim 1, wherein the data signal by the reproduction method has an aspect ratio of 1
6: 9 or 4: 3 video data signal, wherein the identification information identifies whether the aspect ratio is 16: 9 or 4: 3. Transmission method of John Broadcasting. 6. The digital television broadcast transmission method according to claim 1, wherein the data signal according to the reproduction method is an audio data signal having one of a plurality of types of channels. The method of transmitting digital television broadcasts, wherein the information identifies the number of channels of the audio data signal. 7. The digital television broadcast transmission method according to claim 1, wherein the data signal according to the reproduction method is an audio data signal having one or more language sub-audios among a plurality of language sub-audios. The transmission method of digital television broadcasts, wherein the identification information is for identifying a language of a sub audio included in the audio data signal. 8. The digital television broadcast transmitting method according to claim 1, wherein the data signal according to the reproducing method is a scanning method that is a progressive scanning method or an interlaced scanning method, and includes a plurality of types of vertical lines and horizontal pixels. One video format among the video formats, a video data signal having an aspect ratio of 16: 9 or 4: 3, one channel number among a plurality of types of channels, and sub-audio of a plurality of languages An audio data signal having sub-audio of one or more languages, wherein the identification information is a video data signal, whether the scanning method is a progressive scanning method or an interlaced scanning method, and a vertical format of the video format. Whether the number of lines and the number of horizontal pixels and the aspect ratio are 16: 9 or 4:
3. A method for transmitting digital television broadcasts, which specifies whether the number is 3 or not, and specifies the number of channels of the audio signal and the language of the sub audio. 9. In digital television broadcasting,
A transmission multiplexing control signal is added to a data signal packet and a program information packet in a reproduction method on the receiving side based on a predetermined standard, and the data signal packet and the program information packet are multiplexed and transmitted. A receiving unit for receiving the data signal and the transmission multiplex control signal, and accepting selection of a program (program) by an external operator, and extracting the program to a separating unit. A program selecting unit for instructing a data signal of a program to be transmitted; a separating unit for extracting the data signal and the transmission multiplex control signal from an output of the receiving unit based on an instruction from the program selecting unit; A transmission multiplex control signal detection unit that detects the identification information from the transmission multiplex control signal separated and extracted by Based on the identification information detected by the transmission multiplex control signal detection unit, the reproduction method of the data signal of the program extracted by the separation unit is determined, and a decoding instruction is sent to a decoding unit corresponding to the reproduction system. A decoding unit for decoding data signals respectively corresponding to one or a plurality of reproduction schemes separated and extracted by the separation unit in accordance with a decoding command from the command unit; An output unit for outputting or switching and outputting data signals from a plurality of decoding units, and a digital television broadcast reproducing apparatus. 10. In digital television broadcasting, the scanning method is specified in a packet of a video data signal and a program information packet having at least one of a plurality of scanning methods including a progressive scanning method and an interlaced scanning method. A transmission multiplexing control signal describing identification information to be transmitted, and receiving a transport stream (TS) transmitted by multiplexing the video data signal packet and the program information packet. A receiving unit that receives a video data signal and the transmission control signal; a program selecting unit that receives selection of a program (program) by an external operator and instructs a separating unit of a video data signal of a program to be extracted; The video data signal is output from the output of the receiver based on the instruction from A separation unit that extracts the transmission multiplex control signal, a transmission multiplex control signal detection unit that detects the identification information from the transmission multiplex control signal separated and extracted by the separation unit, and a detection unit that detects the transmission multiplex control signal. A scanning instruction unit for determining a scanning method of the video data signal of the program extracted by the separation unit based on the identification information thus determined, and issuing a decoding instruction to a decoding unit corresponding to the determined scanning method; A progressive scanning video data decoding unit that decodes the video data signal of the progressive scanning method separated and extracted by the separation unit according to the decoding command from the scanning command unit. An interlaced scanning video data decoding unit that decodes the separated and extracted interlaced scanning video data signals, and video data from a plurality of decoding units corresponding to the scanning system. Reproducing apparatus of a digital television broadcasting which is characterized in that an output unit for outputting the switching signal. 11. In a digital television broadcast, a packet of a video data signal and a program information packet having one effective vertical line number among a plurality of at least 1080 and 480 effective vertical lines are added to the effective vertical lines. A transmission multiplexing control signal describing identification information for specifying the number of lines is added, and a playback apparatus that receives a transport stream (TS) in which the video data signal packet and the program information packet are multiplexed and transmitted is provided. A receiving unit that receives the video data signal and the transmission control signal; a program tuning unit that receives a selection of a program (program) by an external operator and instructs a separating unit on a video data signal of a program to be extracted; Based on the instruction from the program tuning unit, the video from the output of the receiving unit A separation unit that extracts a data signal and the transmission multiplex control signal; a transmission multiplex control signal detection unit that detects the identification information from the transmission multiplex control signal separated and extracted by the separation unit; Based on the identification information detected by the section, the number of effective vertical lines of the video data signal of the program extracted by the separation section is determined, and a decoding instruction is sent to the decoding section corresponding to the determined number of effective vertical lines. A scanning command unit to output, a vertical line number 1080 video data decoding unit for decoding video data signals of 1080 effective vertical lines separated and extracted by the separation unit in accordance with a decoding command from the scanning command unit; According to the decoding command from the command unit, the number of vertical lines for decoding the video data signal of 480 effective vertical lines separated and extracted by the separation unit is 4 80. A reproduction apparatus for digital television broadcasting, comprising: a video data decoding unit; and an output unit for switching and outputting video data signals from a plurality of decoding units corresponding to the number of effective vertical lines. 12. In a digital television broadcast, a packet of a video data signal and a program information packet having one of a plurality of effective horizontal pixels of at least 1920 dots and 1440 dots are added to the effective horizontal pixels. A reproduction device that adds a transmission multiplex control signal describing identification information specifying the number of pixels and receives a transport stream (TS) in which the video data signal packet and the program information packet are multiplexed and transmitted. A receiving unit that receives the video data signal and the transmission control signal; a program tuning unit that receives a selection of a program (program) by an external operator and instructs a separating unit on a video data signal of a program to be extracted; Based on the instruction from the program tuning unit, the output of the receiving unit A separation unit that extracts a video data signal and the transmission multiplex control signal; a transmission multiplex control signal detection unit that detects the identification information from the transmission multiplex control signal separated and extracted by the separation unit; Based on the identification information detected by the detection unit, the number of effective horizontal pixels of the video data signal of the program extracted by the separation unit is determined, and a decoding instruction is issued to a decoding unit corresponding to the determined number of effective horizontal pixels. A horizontal pixel number 1920 video data decoding unit for decoding a video data signal having an effective horizontal pixel number 1920 dots separated and extracted by the separation unit in accordance with a decoding command from the scanning command unit; The number of horizontal pixels for decoding a video data signal of 1440 dots of effective horizontal pixels separated and extracted by the separation unit according to the decoding command from the scanning command unit A digital television broadcast reproducing apparatus, comprising: a 1440 video data decoding unit; and an output unit for switching and outputting video data signals from a plurality of decoding units corresponding to the number of effective horizontal pixels. 13. In digital television broadcasting, a packet of a video data signal and a program information packet having at least one aspect ratio among a plurality of aspect ratios consisting of an aspect ratio of 16: 9 and an aspect ratio of 4: 3, A reproducing apparatus that adds a transmission multiplex control signal describing identification information for specifying an aspect ratio and receives a transport stream (TS) in which the video data signal packet and the program information packet are multiplexed and transmitted. A receiving unit that receives the video data signal and the transmission control signal; a program tuning unit that receives a selection of a program (program) by an external operator and instructs a separating unit on a video data signal of a program to be extracted; Based on the instruction from the program tuning unit, the output of the receiving unit A separation unit that extracts the video data signal and the transmission multiplex control signal; a transmission multiplex control signal detection unit that detects the identification information from the transmission multiplex control signal separated and extracted by the separation unit; A scan for determining the aspect ratio of the video data signal of the program extracted by the separation unit based on the identification information detected by the signal detection unit and issuing a decoding instruction to a decoding unit corresponding to the determined aspect ratio. A command section; an aspect ratio 16: 9 video data decoding section for decoding a video data signal having an aspect ratio of 16: 9 separated and extracted by the separation section in accordance with a decoding command from the scan command section; Decoding the video data signal having the aspect ratio of 4: 3 separated and extracted by the separation unit in accordance with the decoding command from A digital television broadcast reproducing apparatus, comprising: a data decoding section; and an output section for switching and outputting video data signals from a plurality of decoding sections corresponding to an aspect ratio. 14. In digital television broadcasting, a packet of an audio data signal and a program information packet having one channel number among a plurality of types of channels including at least two channels of stereo and 5.1 channels of multi-channels. A transmission multiplex control signal describing identification information for specifying the number of channels, and receiving a transport stream (TS) in which the audio data signal packet and the program information packet are multiplexed and transmitted. An apparatus, comprising: a receiving unit that receives the audio data signal and the transmission control signal; a program selecting unit that receives selection of a program (program) by an external operator and instructs a separating unit to specify an audio data signal of a program to be extracted. And the receiving unit based on an instruction from the program selecting unit. A separation unit that extracts the audio data signal and the transmission multiplex control signal from the output of the transmission multiplex control signal detection unit that detects the identification information from the transmission multiplex control signal separated and extracted by the separation unit; Based on the identification information detected by the transmission multiplex control signal detection unit, the number of channels of the audio data signal of the program extracted by the separation unit is determined, and a decoding instruction is issued to a decoding unit corresponding to the determined number of channels. A two-channel stereo audio data decoding unit that decodes two-channel audio data signals separated and extracted by the separation unit according to a decoding command from the scanning instruction unit; 5.1-channel / multi-channel audio for decoding the 5.1-channel audio data signal separated and extracted by the separation unit in accordance with the decoding instruction of An apparatus for reproducing digital television broadcasts, comprising: a data decoding unit; and an output unit for switching and outputting video data signals from a plurality of decoding units corresponding to the number of channels. 15. In digital television broadcasting, a packet of an audio data signal and a program information packet having one or more languages of the sub-sounds of a plurality of languages are added to the sub-sounds of the one or more languages. A playback device that adds a transmission multiplex control signal describing identification information specifying a language and receives a transport stream (TS) in which the audio data signal packet and the program information packet are multiplexed and transmitted. A receiving unit that receives the audio data signal and the transmission control signal; accepts selection of a program (program) and sub-audio by an external operator, and outputs an audio data signal of one sub-audio of the program to be extracted to the separating unit. An instructing program tuning unit, and an audio data signal from an output of the receiving unit based on an instruction from the program tuning unit. A separation unit that extracts the transmission multiplex control signal and the transmission multiplex control signal; a transmission multiplex control signal detection unit that detects the identification information from the transmission multiplex control signal separated and extracted by the separation unit; A scanning command unit that determines a language of the one sub-sound extracted by the separation unit based on the detected identification information and issues a decoding command to a decoding unit corresponding to the language; A plurality of sub audio data decoding units for decoding audio data signals respectively corresponding to a plurality of languages separated and extracted by the separation unit in accordance with the decoding instruction from the plurality of sub audio data decoding units. An output unit for switching and outputting a digital television broadcast.