JPH04213983A - Transmission system - Google Patents

Abstract

PURPOSE:To offer the transmission system for the transmission of television program list information by sending the television program list information as teletext information and allowing a receiver to utilize the information for video recording reservation of a video recording and reproducing device. CONSTITUTION:The system is provided with a character signal extraction section 1 extracting a character signal superimposed for a vertical blanking period from a video signal (a) and a teletext program data decoder section 4 decoding a signal discriminated to be a teletext data by a data type discrimination section 3 and expanding the decoded data into a character and a graph for display, and a video recording and reproducing device control section 8 displaying the teletext data onto the screen and generating a control signal to the video recording and reproducing device with control information obtained by the additional data decoder section 6 is used to apply video recording reservation for the video recording and reproducing device 9.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention transmits television program list information such as channel information, date information, time information, program code information, and title information using encoded transmission teletext on the transmitting side, and The present invention relates to a transmission method for making a recording reservation for an image recording and reproducing apparatus using the received television program guide information.

0002

[Background Art] In recent years, a coding transmission method has been developed that uses broadcast radio waves to display text and graphics information such as news, weather forecasts, and stock market information on the screen of a home television receiver. Teletext broadcasting has been realized, and television receivers with a built-in receiving device for receiving coded transmission type teletext broadcasting have also been developed. Hereinafter, a teletext broadcast using the encoded transmission method and a teletext receiver using the encoded transmission method as described above will be described with reference to the drawings.

FIG. 6 shows the configuration of a conventional teletext receiver. In FIG. 6, a is a television video signal, 21 is a character signal extraction unit that extracts a character signal superimposed in the vertical blanking period from the video signal a, and 22 is a data block extracted by the character signal extraction unit. A data block connecting section 23 connects unit character signals and divides them into data groups; 23 determines whether the data groups divided by the data block connecting section are program data, page data;
A data type determining section 24 determines whether the data is index data, and a character program data decoder section 24 decodes the character program data according to the data type determined by the data type determining section 23 and develops it into character figures for display. , 25 is a buffer memory section for storing signals determined to be character program data by the data type determining section 23, and 26 is a buffer memory section for storing signals determined to be character program data by the data type determining section 23; Display control unit for displaying, 2
Reference numeral 7 denotes a video memory unit that stores display data to be actually displayed on the screen in the display control unit, and 28 a sound generator that generates actual sound based on the additional sound data decoded by the character program data decoder unit 24. Department.

[0004] FIG. 7 shows the hierarchy of a teletext signal using the encoded transmission system. In FIG. 7, layer 1 is a physical layer and shows the specifications of a character signal as an electrical and physical signal. Also, this signal is 14H of the vertical blanking period of the television signal.
, 15H, 16H and 21H. Tier 2
In the link layer, character signals are treated as logical data of 1 and 0. A data line is a unit of transmission of character signals sent during one horizontal scanning line period of a television video signal, and consists of a synchronization section and a data packet. A data packet refers to the part of the data line excluding the synchronization part, and consists of a prefix, a data block, and a check code. Layer 3 is a network layer and mainly shows the function of a prefix. The prefix is data for identification and control that is attached to the beginning of a data packet, and the data block is the part of the data packet excluding the prefix and check code, and it sends out various information data. Layer 4 is the transport layer and shows the function of data groups. A data group consists of a data group that is a group of information data transmitted by one or more data blocks. Layer 5 is a session layer that shows the structure of program data, functions for program identification control, and the like. Layer 6 is the presentation layer, which shows various presentation encoding functions, and specifies encoding for displaying characters, graphics, and expressing additional sounds.

FIG. 8 shows the structure of program management data and page data. At the beginning of the program data, program management data related to the entire program is sent. Program management data or page data consists of a data header and several data units.

FIG. 9 shows the structure and transmission procedure of a data group header. In FIG. 9, the data group header consists of a data group identification code, a data group retransmission code, a data group link code, a data group serial number, a data group size, and operational data for data group identification and control. Here, the data group identification code indicates the type of data group using a binary value, and "0" is assigned to program management data or page data, and "15" is assigned to program index data.

FIG. 10 shows the structure and sending procedure of a data header. In FIG. 10, the data header consists of data header identification, data header data length, and data header data. Data header identification represents a function of identifying the type of data header, and its encoded representation consists of an information separation code and data header parameters. Regarding the correspondence between data headers and parameters, the program data header, page data header, program search data header, and continuation data header correspond to data header parameters 02/0 to 02/3, respectively.

FIG. 11 shows the structure and sending procedure of a data unit. In FIG. 11, a data unit consists of a data unit identification, a data unit data length, and unit data. Data unit identification represents a function for identifying the type of data unit, and its encoded representation consists of a data unit separation code and data unit parameters. In the current system, 16 types of identification parameters such as body text, header text, color map, and program index are assigned to data unit parameters.

FIG. 12 shows an example of encoding of current teletext. In Figure 12, there are two data units, the data unit parameters are "24H" and "20H", and these two data units are "header sentence" and "20H", respectively.
This is a data unit that indicates the main text.

The operation of the teletext receiving apparatus configured as shown in FIG. 6 will be explained below.

The character signal extraction unit 21 from the input video signal a performs vertical blanking periods 14H, 15H, 16H, 2
Extract the character signal superimposed on 1H. A data block concatenation section 22 extracts data blocks from the character signals extracted by the character signal extraction section 21, concatenates them, and classifies them into data groups. Data type discrimination unit 2
3 identifies the data groups divided by the data block concatenation unit 22 as program data or
After determining whether it is page data or index data, the text program data decoding section 24 stores the text program data from the data type determining section 23 in the buffer memory section 25, and also stores the text program data stored in the buffer memory section 25. The character program data of the program number that needs to be presented is extracted from the data, the character signal is decoded as shown in FIG. Write information. The display control section 26 sequentially reads out the character/graphic screen information written in the video memory section 27 and outputs a display signal b. Furthermore, if there is additional sound information in the program data that needs to be presented, the character program data decoding section 24 decodes the additional sound information and sends the sound generation data to the sound generation section 6. outputs a sound signal based on the

0012

[Problem to be solved by the invention] Currently, in teletext broadcasting, text and graphic information such as news, weather forecasts, stock market conditions, etc. consisting of text and graphics are displayed on the screen of a television receiver, and sound is generated using additional sound. This service is being provided. Here, if TV program guide information such as channel information, date information, time information, program code information, and title information is sent as text and graphic information, the receiving side uses the received TV program guide information to record and reproduce images. Furthermore, it becomes possible to easily make a recording reservation for the device.

[0013] Therefore, the present invention provides a transmission method for transmitting TV program guide information as teletext information, and in the case where the receiving device utilizes the information for recording reservation of an image recording and reproducing device. It provides:

[0014]

[Means for Solving the Problems] The transmission method of the present invention provides data group identification for identifying program management data or page data and program index data in a data group header portion in a signal configuration of teletext broadcasting using an encoded transmission method. A new code is assigned to the code to identify it as additional service data, and the data header section identifies the broadcast channel with a channel identification number, a program content update indicator that indicates the update of the program content, and a program broadcast that indicates the broadcast date of the program. In addition to adding the date as data, a new parameter identifying that the data header is related to an additional service is assigned to the data header parameter that identifies the program data header, page data header, and program search data header.
The data unit includes a television program identification number for identifying each television program broadcast on a day, a program broadcast start time, a program broadcast end time, a program classification identification index for indicating the genre of the program content, and a program title. In addition to adding the program title data length indicating the data length and the program title data, a parameter identifying additional service data is added to the data unit parameters for identifying the type of data unit such as body text, header text, additional sound information, etc. The configuration is such that the above-mentioned data is newly allocated and transmitted.

[0015] Furthermore, the transmission system of the present invention provides an additional service to the data group identification code for identifying program management data or page data and program index data in the data group header section in the signal configuration of teletext broadcasting using the encoded transmission system. Assign a new code to identify it as data,
In the data header section, the channel identification number that identifies the broadcast channel, the program content update index that indicates the update of the program content, and the program broadcast date that indicates the broadcast date of the program are added as data, and the program data header, page data header, and program A parameter that identifies the additional service data header is newly assigned to the data header parameter that identifies the search data header, and a television program identification number that identifies each television program broadcast on a day in the data unit section. , a program broadcast start time, a program broadcast end time, a program classification identification index to indicate the genre of the program content, and a program title to indicate the display position of the program title in the vertical and horizontal directions when the program title data is displayed on the screen. In addition to adding the display start position and program title display end position as data, a new parameter for identifying additional service data has been added to the data unit parameters for identifying the type of data unit such as body text, header text, additional sound information, etc. , and transmits the above-mentioned data.

[0016] Furthermore, the transmission system of the present invention is based on the above embodiment 1.
In the transmission method described in and 2, in the first embodiment, the above-mentioned television program identification number, program broadcast start time, program broadcast end time, program classification identification index, program title data length, program title, and in the second embodiment, the above-mentioned program broadcast Start time, program broadcast flow time, program classification identification index, program title display start position,
In addition to the program title display flow rate position, additional data length indicating the data length of TV program guide information added in addition to the above data, and when the additional data length is not 0 (when it is TV program guide information to be added), This system has a configuration in which additional data control indicating the type of data to be added and additional data representing the data content are added to the data unit section for each television program and transmitted.

[0017]

[Operation] The present invention uses the above-mentioned transmission method to transmit television program schedule information such as channel information, date information, time information, program code information, and title information as teletext information, thereby providing an image on the teletext receiving side. When each title of a television program is selected on the recording/playback device, information necessary for recording reservation on the image recording/playback device, such as channel, date, and time information, is retrieved from the TV program guide information received by the teletext receiving device and recorded. This allows for easy reservations.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A transmission system according to a first embodiment of the present invention will be explained below with reference to the drawings.

FIG. 1 shows the configuration of a receiving apparatus in a first embodiment of the present invention. FIG. 2 shows the structure of the data group header and data header and the sending procedure in the first embodiment of the present invention.

FIG. 3 shows the structure of a data unit and the sending procedure in the first embodiment of the present invention.

[0021] In FIG. 1, A is a receiving means for receiving text broadcasting using the encoded transmission system, a is a television video signal, and 1
2 is a teletext signal extracting unit that extracts a character signal superimposed during the vertical blanking period from the video signal a; 2 is a character signal extracting unit for each data block extracted by the character signal extracting unit; The data block connection section 3 separates the data data groups divided by the data block connection section into character program data,
A data type determining unit 4 that determines whether it is additional data decodes the signal determined to be character program data by the data type determining unit 3, and develops it into character figures for display. 5 is a data type data decoder unit. A buffer memory unit 6 stores signals determined to be character program data by the determination unit 3, and a buffer memory unit 6 decodes signals determined to be additional data by the data type determination unit 3, and develops them into character figures for display. An additional data decoder section, 7 is a buffer memory section for storing signals determined as additional data by the data type determination section 3, and 8 is an additional data decoder section 6.
an image recording and reproducing device control section that generates a control signal to the image recording and reproducing device based on the obtained control information; 9, the image recording and reproducing device; 10, the character program data decoding section and the additional data decoding section, which convert the data into characters and figures; 11 is a video memory section that stores the display data that is actually displayed on the screen, etc. in the display control section; 12 is the text program data decoder section 4; This is a sound generation section that generates actual sound based on the additional sound data decoded by.

In FIG. 2, in contrast to the configuration and transmission procedure of the conventional example, in the present invention, a channel identification number for identifying a broadcast channel, a program content update index for notifying an update of program content, and a broadcast date of a program are provided in the data header section. In addition to adding the indicated program broadcast date as data, add a code that identifies it as additional service data to the data group identification code in the data group header section, and a code that identifies it as additional service data to the data header parameter in the data header section. Assign a new identifying parameter. Here, the data group identification code that identifies additional service data is hexadecimal data of 4 excluding 0 and F.
The data header parameter for identifying bit data or a data header related to an additional service may be any 1-byte hexadecimal data excluding 20, 21, 22, and 23.

In FIG. 3, in contrast to the configuration and transmission procedure of the conventional example, in the present invention, the data unit section includes a television program identification number for identifying each television program to be broadcast on a day, a program broadcast start time, and a program. In addition to adding the program classification identification index that indicates the broadcast end time and the genre of the program content, the program title data length that indicates the data length of the program title, and the program title as data, the data units such as the main text, header text, additional sound information, etc. A parameter for identifying additional service data is newly assigned to the data unit parameter for identifying the type. Here, the data unit parameters that identify additional service data are hexadecimal data 20, 24, 28, 2C, 30,
31, 32, 34, 35, 38, 39, 3B, 3C, 3
Any 1-byte data other than D, 3E, and 3F may be used.

The operation of the receiving apparatus configured as described above will be explained below using FIG. 1.

First, in the conventional teletext reception process, the character signal extracting section 1 extracts 14H, 15H, 16H,
The character signal superimposed on 21H is extracted. A data block concatenation section 2 extracts data blocks from the character signals extracted by the character signal extraction section 1, concatenates them, and classifies them into data groups. The data type determination unit 3 determines whether the data groups divided by the data block concatenation unit 2 are mapped program data or additional data based on the data group identification code, and if it is text program data, it is decoded by the text program data decoding unit. If the processing is additional data, the additional data decoding section performs decoding processing.

[0026] The following will be divided into text program data processing and additional data processing, but we will first touch on text program data processing.

In the text program data processing, after the data type determining unit 3 determines that the data is character program data, the output signal from the data type determining unit 3 is input to the character program data decoder unit 4. The text program data decoder section 4 stores the text program data from the data type determination section 3 in the buffer memory section 5, and also extracts the text program data of the program number that needs to be presented from the text program data stored in the buffer memory section 5. The character signal is extracted and decoded as shown in FIG. 12, and the character/graphic screen information is written into the video memory section 11 through the display control section 10. The display control section 10 sequentially reads out the character/graphic screen information written in the video memory section 11 and outputs a display signal b. Furthermore, if there is additional sound information in the program data that needs to be presented, the character program data decoding section 4 decodes the additional sound information and sends the sound generation data to the sound generation section 12. outputs a sound signal based on the

Next, in the additional data processing, after the data type determining unit 3 determines that the data is additional data, the data type determining unit 3
The output signal is input to the additional data decoder section 6. The additional data decoder section 6 stores the additional data from the data type determination section 3 in the buffer memory section 7, and
Additional data that needs to be presented is extracted from the additional data stored in the buffer memory section 7 and decoded. The procedure for storing additional data in the buffer memory section 7 is as follows:
If the data header parameter identifies additional data in the data header section, the program content update index is read from the 12th byte (see Figure 2), and compared with the index read last time, and if it is equal, the program content is changed. If the program guide information is not equal, the transmitted program guide information is invalidated, and if they are not equal, it is determined that a change has occurred in the program contents, and the program guide information sent this time is stored in the buffer memory section 7 as the program guide information. Next, the procedure for decoding additional data will be explained. Here, assuming that the selected program list information is the first program, first, in the data header section, if it is identified as additional data using the data header parameter, the channel identification number starts from the 11th byte, and 2 bytes starts from the 13th byte. The program broadcast date of is extracted as information (see FIG. 2). Next, if the data unit parameter identifies the additional data in the data unit section, the television program identification number for the first program starts from the 5th byte, and the program broadcast start time for the first program starts from the 6th byte. , Program broadcast end time for the first program in 2 bytes from the 8th byte, Program classification identification index for the first program from the 10th byte, Program title data length for the first program from the 11th byte, Information on the first program from the 12th byte. The program title is extracted as information (see Figure 3). Then, the retrieved program information is input to the image recording and reproducing device control section 8,
An image recording and reproducing device control section 8 generates an image recording and reproducing device control signal to control the image recording and reproducing device. If data after the second program exists, the data after the second program is recorded in the buffer memory 7 as a repetition of the same data as the data regarding the first program.

As described above, according to the present embodiment, data group identification codes, data header parameters, and data unit parameters regarding additional data in teletext broadcasting using the encoded transmission system are newly assigned, and the program content of the television program list information is By transmitting update information, channel information, date information as data header data, and time information, program genre information, title information, etc. as data unit data, TV program guide information is automatically detected and TV program guide information can be changed. By simply selecting the TV program displayed on the screen, you can easily schedule recording on the image recording and reproducing device, and the teletext information can be used on the receiving device.

A transmission system according to a second embodiment of the present invention will be explained below with reference to the drawings.

FIG. 1 shows the configuration of a receiving apparatus in a second embodiment of the present invention. FIG. 2 shows the structure of a data group header and data header and the sending procedure in a second embodiment of the present invention.

FIG. 4 shows the structure and sending procedure of a data unit in a second embodiment of the present invention.

Most of the processing is the same as in Embodiment 1, but the difference is that in Embodiment 1, the program title data length and the program title itself are transmitted as the data structure regarding the program title in the data unit section. , Example 2
In this case, when the program title data is displayed on the screen, the horizontal and vertical program title display start and end positions on the screen are transmitted. As a result, on the receiving device side, the method of extracting the program title data is different, and in the case of the second embodiment, the program title display start and end position data is
, 13 bytes, and selected program title data is extracted from the data and the program title data decoded by the character program data decoding section 4. By performing the same processing as in the first embodiment in other processes, the system as a whole can perform exactly the same processing as in the first embodiment.

The transmission system of the third embodiment of the present invention will be explained below with reference to the drawings.

FIG. 1 shows the configuration of a receiving apparatus in a third embodiment of the present invention. FIG. 2 shows the structure of the data group header and data header and the sending procedure in the third embodiment of the present invention.

FIG. 5 shows the structure and sending procedure of a data unit in a third embodiment of the present invention.

As can be seen from FIG. 5, the third embodiment adds additional data length, additional data control, and additional data as the data content to the data unit configuration of the first embodiment. , additional data length indicates the program broadcast start time, program broadcast end time, program classification identification index, program title data length, and data length of additional data other than the program title in the television program corresponding to the television program identification number. The number of bytes of additional data to be sent following the additional data length is sent as a binary value in the next byte. The additional data control indicates the type of additional data of the television program corresponding to the television program identification number, indicates the presence or absence of the additional data for each bit, and is sent in the byte following the additional data length. As an example of additional data, 1
When one television program is continuously broadcast across a plurality of broadcast channels, data that provides information about the continuous program is included.

[0038]

As described above, according to the present invention, a data group identification code for identifying program management data or page data and program index data is provided in a data group header portion in a signal configuration of teletext broadcasting using an encoded transmission system. A new code is assigned to identify additional service data, and the data header section includes a channel identification number that identifies the broadcast channel, a program content update indicator that indicates the update of the program content, and a program broadcast date that indicates the broadcast date of the program. is added as data, and a new parameter is assigned to the data header parameter that identifies the program data header, age data header, and program search data header to identify that it is a data header related to an additional service. A television program identification number that identifies each television program broadcast on the day, a program broadcast start time, a program broadcast end time, a program classification identification index that indicates the genre of the program content, and a program title that indicates the data length of the program title. In addition to adding the data length and program title as data, a new parameter for identifying additional service data is assigned to the data unit parameter for identifying the type of data unit such as body text, header text, additional sound information, etc. By having a configuration that transmits the data described above, while maintaining compatibility with conventional teletext receiving devices, there is no memory for storing program title data sent as text program data, and only memory for additional data is provided. Therefore, it is possible to reduce the memory required for the broadcast receiving device.

Further, according to the present invention, in the signal configuration of teletext broadcasting using the coded transmission method, additional service data is added to the data group identification code for identifying program management data or page data and program index data in the data group header section. A new code is assigned to identify the broadcast channel, and a channel identification number that identifies the broadcast channel in the data header, a program content update index that indicates the update of the program content, and the program broadcast date that indicates the broadcast date of the program are added as data. At the same time, a parameter that identifies the additional service data header is newly assigned to the data header parameter that identifies the program data header, page data header, and program search data header, and the data unit section identifies each television broadcast on a day. Vertical and horizontal directions when the television program identification number for program identification, program broadcast start time, program broadcast end time, program classification identification index for indicating the genre of program content, and program title data are displayed on the screen. program title display start position indicating the display position of the program title,
In addition to adding the end position of the program title as data, a parameter for identifying additional service data is newly assigned to the data unit parameter for identifying the type of data unit such as main text, header text, additional sound information, etc. This system maintains compatibility with conventional teletext receiving devices by having a configuration that transmits data for text broadcasting, and at the same time uses the program title data sent as text program data rather than the program title data itself as program title data information. As additional data, when program title data as text program data is displayed on the screen, the horizontal and vertical program title display start and end positions on the screen are transmitted, so that the amount of transmitted data is reduced. I can do it.

Further, according to the present invention, the above-mentioned claims 1 and 2
In the transmission system described in Claim 1, the above-mentioned television program identification number, program broadcast start time, program broadcast end time, program classification identification index, program title data length, program title,
Claim 2 indicates the data length of television program guide information added to the above-mentioned data in addition to the program broadcast start time, program broadcast end time, program classification identification index, program title display start position, and program title display end position. The additional data length, the additional data control that indicates the type of data to be added when the additional data length is not 0 (when there is TV program list information to be added), and the additional data that is the data content are stored in the data unit section. By providing a configuration in which data is added and transmitted for each television number, it is possible to maintain compatibility with conventional teletext receiving devices while providing expandability for various additional data that may be considered in the future.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of a receiving device in a first embodiment of the present invention.

[Figure 2] Schematic diagram showing the structure and sending procedure of the data group header and data header

[Figure 3] Schematic diagram showing the configuration and sending procedure of the data unit

[Figure 4] Schematic diagram showing the configuration and sending procedure of the same data unit

[Figure 5] Schematic diagram showing the configuration and sending procedure of the same data unit

[Figure 6] Configuration diagram of a conventional teletext receiving device

[Figure 7] Hierarchical diagram of teletext signal using encoded transmission method

[Figure 8] Configuration diagram of program management data and page data in the conventional teletext encoded transmission system

[Figure 9] Schematic diagram showing the configuration and transmission procedure of the same data group header

[Figure 10] Schematic diagram showing the configuration and sending procedure of the same data header

[Figure 11] Schematic diagram showing the configuration and sending procedure of the same data unit

[Figure 12] Schematic diagram showing an example of encoding of current teletext broadcasting

[Explanation of symbols]

1, 21 Character signal extraction section 2, 22
Data block concatenation units 3, 23 Data type determination units 4, 24 Character program data decoder units 5, 7, 25 Buffer memory unit 6 Additional data decoder unit 8
Image recording and reproducing device control section 9
Image recording and reproducing device section 10, 26
Display control section 11, 27 Video memory section 12, 28 Sound generation section

Claims (3)

[Claims] [Claim 1] The transmitting side transmits television program list information such as channel information, date information, time information, program code information, and title information using encoded transmission system teletext; In a system for making recording reservations for an image recording and playback device using program guide information,
A channel in which a code to identify additional service data is newly assigned to the data group identification code that identifies program management data or page data and program search data in the data group header, and the broadcast channel is identified in the data header. In addition to adding the identification number, the program content update index that indicates the update of the program content, and the program broadcast date that indicates the broadcast date of the program, the data header parameter that identifies the program data header, page data header, and program search data header is added. A new parameter is assigned to identify that the data header is related to an additional service, and a television program identification number, program broadcast start time, and program broadcast end time are used to identify each television program broadcast on a day in the data unit section. In addition to adding the program classification identification index to indicate the genre of the program content, the program title data length indicating the data length of the program title, and the program title as data, it also identifies the type of data unit such as main text, header text, additional sound information, etc. A transmission method characterized in that a parameter for identifying additional service data is newly assigned to a data unit parameter for transmission. [Claim 2] The transmitting side transmits television program list information such as channel information, date information, time information, program code information, and title information using encoded transmission system teletext, and the receiving side transmits the received TV program list information. In a system for making recording reservations for an image recording and playback device using program guide information,
Channels that identify broadcasting channels by assigning a new code to identify additional service data to the data group identification code that identifies program management data or page data and program search data in the data group header. In addition to adding the identification number, the program content update index that indicates the update of the program content, and the program broadcast date that indicates the broadcast date of the program, the data header parameter that identifies the program data header, page data header, and program search data header is added. Allocates a new parameter that identifies it as an additional service data header,
A television program identification number for identifying each television program broadcast on a day in the data unit section, a program broadcast start time, a program broadcast end time, a program classification identification index and program title data for indicating the genre of the program content. The program title display start position and program title display end position indicating the display position of the program title in the vertical and horizontal directions when displayed on the screen are added as data, as well as data units such as the main text, header text, additional sound information, etc. A transmission method characterized in that a parameter for identifying additional service data is newly assigned to a data unit parameter for identifying the type of additional service data. 3. In the transmission system described in claims 1 and 2 above, claim 1 includes the television program identification number, the program broadcast start time, the program broadcast end time, the program classification identification index, and the program title data length. , program title, claim 2
In addition to the above-mentioned program broadcast start time, program broadcast end time, program classification identification index, program title display start position, and program title display end position, additional data length indicating the data length of TV program list information added in addition to each data above. And, when the additional data length is not 0 (when there is TV program guide information to be added), the additional data control indicating the type of data to be added and the additional data that is the data content are added to each television program in the data unit section. A transmission method characterized by adding and transmitting each time.