JPH11136646A - Digital signal transmitter and receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable detection of recordability or the like in advance by obtaining information such as profile and level information on video signal to be transmitted or a bit rate before the desired video signal is received. SOLUTION: A digital signal which multiplexes plural pieces of information is inputted to an input terminal 101 and a reception part 11 demodulates the digital signal. A packet separation part 12 separates and extracts desired SI data, a compression related information analysis/extraction part 142 analyzes and extracts profile and level information from the separated and extracted SI data and obtains information that a video A is MP ML and a video B is MP HL. Then, a display part 15 displays an output video of an encoding part 13 and the profile and level information on a screen. Thus, when the SI for describing the profile and level information on video signals of a program A and a program B is obtained, the profile and level information corresponding to each of the programs is displayed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital signal transmitting apparatus and a digital signal transmitting apparatus for multiplexing a plurality of service information SI data including information of a program to be transmitted together with video information and audio information and transmitting and receiving the multiplexed data. The present invention relates to a digital signal transmission device and a reception device suitable for restoring the service information SI data relating to compression-related information and displaying program information, recording a program, or displaying a program guide.

[0002]

2. Description of the Related Art In a conventional digital broadcasting system, data related to a program is generally stored in MPEG2 (ISO / I / O).
Service information SI in accordance with the provisions of EC13818-1)
(Service Information) data (hereinafter simply referred to as SI data) is multiplexed as additional data into a broadcast signal. All the images used for broadcasting are MPEG2 (ISO / IEC13818-2).
MP @ ML according to the provisions of the above, but MP @ HL broadcasting may be considered in the future (Nikkei Electronics 1996.
9.2 pp. 149-164). Although there is information such as the time zone of the program in these program data, each video signal
There is no description about the compression-related information indicating the compression performance of the audio signal, and in order to obtain the compression-related information, the header section relating to the desired video signal / audio signal separated by the packet separating means is analyzed. You need to get

FIG. 2 is a block diagram of a digital signal receiving apparatus in a conventional digital signal transmitting / receiving apparatus. In FIG. 2, a digital broadcast receiving apparatus 100 includes an input terminal 101 for a signal in which a plurality of video signals, audio signals, and SI data are multiplexed and modulated, a receiving unit 11, a packet separating unit 12, a video signal / audio Decoding section 13 for decoding a signal
A system control unit 14 for analyzing received information to control each unit, a compression-related information analysis / extraction unit 141 included in the system control unit 14, and a display unit 15
And an output terminal 102 for outputting a video signal.

[0004] The receiving unit 11 corrects an error generated during demodulation or transmission. The packet separation unit 12 selectively extracts a desired video signal, audio signal, and SI data signal from the multiplexed signal. The decoding unit 13 decodes the compression-encoded signal. The system control unit 14 analyzes the SI data separated by the packet separation unit 12 and controls the display of the SI data. In particular, compression-related information analysis / extraction unit 1
Reference numeral 41 analyzes and extracts compression-related information from the desired video signal / audio signal separated by the packet separation unit 12 and decoded by the decoding unit 13. The display unit 15 includes the decoding unit 1
3 displays the desired video signal decoded and the compression-related information on a screen. FIG. 2 shows that the compression-related information can be obtained and displayed on the screen only after the desired video / audio signal is received and then the output video / audio signal from the decoding unit 13 is obtained.

[0005]

When a video signal and an audio signal having a plurality of types of compression-related information are transmitted and received by using the conventional digital signal transmitting and receiving apparatus described above, (1) A digital function of displaying the compression-related information of the video signal of the desired channel, (2) detecting whether or not the video signal can be recorded, or (3) identifying and displaying the compression-related information when displaying the program guide. Considering that it is provided in the signal receiving device, as described above,
In a conventional digital signal transmitting and receiving apparatus, since it is necessary to analyze a header portion related to a video signal and acquire compression-related information, it is difficult to acquire compression-related information of a desired video signal before a desired video signal is received. There is a problem that can not be. Therefore, conventionally, the user cannot know the compression-related information of the program unless the program starts.

SUMMARY OF THE INVENTION It is an object of the present invention to display compression-related information of a video / audio signal of a desired channel, detect whether video can be recorded, and identify and display a program in a program table according to the compression-related information. It is an object of the present invention to provide a digital signal transmitting device and a receiving device.

[0007]

According to the digital signal receiving apparatus of the present invention, a digitalized and compressed video signal and audio signal are multiplexed and modulated in a packet format together with service information SI data indicating information of a program or the like. Receiving means for receiving a transmission signal, packet separating means for separating and extracting the packetized and multiplexed video and audio signals and the SI data, and decoding of the video and audio signals separated from the packet separating means; A digital signal receiving apparatus comprising: decoding means for outputting; and system control means for analyzing the SI information separated from the packet separating means and controlling display of the SI information. Analyzing the compression-related information of the video signal / audio signal included in the SI information from the separation unit. Comprising a compression-related information analyzing means, it is to analyze the compression-related information in the compressed-related information analyzing means.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 3 is a block diagram of a digital signal transmitting apparatus according to one embodiment of the present invention. In FIG. 3, a digital signal transmitting apparatus 400 includes an input terminal 401 for inputting a video signal and an audio signal, an SI data supply unit 41,
Compression-related information supply unit 41 included in I data supply unit 41
1, a data multiplexing unit 42, a transmitting unit 43, and an output terminal 402 for outputting a signal transmitted by the transmitting unit.

Next, the operation of the digital signal transmitting apparatus 400 according to the present embodiment will be described. Compression related information supply unit 4
11 supplies the compression-related information relating to the video signal / audio signal, and the SI data supply unit 41 supplies the data multiplexing unit 42 with the information including the program and the like and the SI including the compression-related information. The data multiplexing unit 42 multiplexes the compressed video signal / audio information and the SI data, and outputs the multiplexed data to the transmission unit 43. The transmitting unit 43 modulates and outputs the output signal of the data multiplexing unit. In particular, video signals
By providing the compression-related information supply unit 411 for supplying the compression-related information of the audio signal, the compression-related information can be supplied as SI data and transmitted as broadcast data. Before receiving a video, it is possible to obtain compression-related information on the desired video signal.

FIG. 1 is a block diagram of a digital signal receiving apparatus according to a first embodiment of the present invention. This embodiment is characterized in that the compression-related information extracted by the compression-related information analyzing / extracting unit 142 is displayed on a screen. In the conventional digital signal receiving apparatus shown in FIG. Indicated by reference numerals.

In FIG. 1, a compression-related information analysis / extraction section 142 analyzes and extracts compression-related information from the SI data separated by the packet separation section 12, and the other parts are the same as those in the conventional block diagram of FIG. is there.

Next, the operation of the digital signal receiving apparatus 100 according to this embodiment will be described. In the digital broadcasting, when a program A using the video A and a program B using the video B are scheduled to be broadcasted in the future, it is described that the video A is MP @ ML and the video B is MP @ HL. S
An operation example of receiving a bit stream including I data, analyzing and extracting profile and level information from the SI data separated by the packet separating unit 12, and displaying the information on a screen will be described.

A digital signal in which a plurality of pieces of information are multiplexed is input to the input terminal 101, and the receiving section 11
Demodulates the digital signal. The packet separation unit 12
Separates and extracts desired SI data. The compression-related information analyzing / extracting unit 142 analyzes and extracts profile and level information for a desired video from the separated and extracted SI data, and determines that the video A is MP @ ML and the video B is MP @ HL. get information. The display unit 15
Displays the output video of the decoding unit 13 and the profile and level information on a screen. In this way, program A,
When the SI that describes the profile and level information related to the video signal of the program B is acquired, the profile and level information for each program are displayed. FIG. 4 is an example in which profile and level information on programs A and B are displayed. Display device 500
Above, a program name column 501 and a profile and level information column are displayed.

As shown in FIG. 4, since profile and level information can be obtained from SI data, before receiving a desired video signal, that is, profile and level information relating to a video of a program to be broadcasted in the future is obtained. You can know.

FIG. 5 is a block diagram of a digital signal receiving apparatus according to a second embodiment of the present invention. This embodiment is characterized in that whether or not a desired video can be recorded is detected in advance by using the compression-related information extracted by the compression-related information analyzing / extracting unit 14, as shown in FIG. In the digital broadcast receiving apparatus described above, the same means are denoted by the same reference numerals.

In FIG. 5, a user input terminal 103 is
This is an input terminal for receiving an input from a user. The recording device setting unit 143 sets and stores device specifications relating to recording of the digital video recording device that is built in or externally connected, as recording device setting information, and stores the recording device control unit 144.
Detects whether the desired video can be recorded from the compression-related information and the recording device setting information, and controls the recording device based on the result of the recording possibility. The digital recording device may not be able to record depending on the profile or level because the transmission rate at which recording can be performed may differ depending on the device.

Therefore, the recording device controller 144 detects whether or not recording is possible by the connected recording device, and notifies the user. Therefore, when making a recording reservation or the like, it is possible to judge whether or not the reservation is possible. The display unit 21 displays on the screen the video signal decoded by the decoding unit 13 and the result of the recording availability detection detected by the recording device control unit 144. Control signal output terminal 104
Is a terminal for outputting a control signal of the recording device. Others are the same as the embodiment of FIG.

Next, the operation of the digital signal receiving apparatus 100 according to the present embodiment will be described. In the digital broadcasting, when a program A using the video A and a program B using the video B are scheduled to be broadcasted in the future, it is described that the video A is MP @ ML and the video B is MP @ HL. S
An operation example of receiving a bit stream including I as additional data, analyzing and extracting profile and level information based on the SI data separated by the packet separation unit 12, controlling a recording device, and displaying a recording possibility detection result will be described. I do.

Next, the operation of the third embodiment different from the first embodiment shown in FIG. 1 will be described. First, MP
Consider a case where a digital video recorder compatible with only ML is connected. In advance, the user enters the user input terminal 103
Through the setting operation that the recording apparatus is an MP @ ML-compatible recording apparatus. The recording device setting unit 143 sets and stores “the recording device is an MP @ ML compatible recording device” based on the user setting operation. The recording device control unit 144 includes a recording device setting unit 143.
The video A is transmitted to the recording device based on the recording device setting information and the compression-related information related to the video A and the video B, which are stored as “the recording device is an MP @ ML-compatible recording device”. It detects that recording is possible, but video B cannot be recorded on the recording device.

Further, when a recording operation reservation setting operation of program A is received from the user through the user input terminal 103, the recording device control unit 144 sets the program A at the reservation time based on the recording availability detection result. The recording unit is controlled so as to be recorded, and the display unit 21 indicates that recording is possible. When the user receives an operation for setting a program recording reservation for the program B, the display unit 21 displays that the program B cannot be recorded based on the result of the recording propriety detection.

In this way, the SI describing the profile and level information relating to the video signals of the programs A and B is described.
When data is acquired, the recording device is controlled for each video signal.

Next, MP @ ML and MP @ HL are externally provided.
Consider a case where a digital video recording device corresponding to is connected.

It is assumed that the user has previously performed a setting operation through the user input terminal 103 so that the recording device is a recording device compatible with MP @ ML and MP @ HL.
The recording device setting unit 143 sets and stores "the recording device is a recording device compatible with MP @ ML and MP @ HL" based on the user setting operation. Recording device controller 1
44 also includes the recording device setting information “the recording device is a MP @ ML and MP @ HL compatible recording device” stored by the recording device setting unit 143 and the compression-related information regarding the video A and the video B. At this time, it is detected that both the video A and the video B can be recorded on the recording device.

Further, when the recording apparatus control section 144 receives a setting operation of the program recording reservation of the video A from the user through the user input terminal 103, the recording apparatus control section 144 sets the program A at the reservation time based on the result of the recording propriety detection. The recording device is controlled so as to be recorded, and the display unit 21 displays that recording is possible.
Also in the case of program recording reservation of the program B, the recording device is controlled in the same manner to indicate that recording is possible.

As described above, the SI describing the profile and level information relating to the video signals of the programs A and B is described.
Is acquired, the recording device is controlled for each video.

As described above, since the profile and level information can be obtained from the SI data, before receiving the video signal for which the user wants to know whether or not recording is possible, that is, the information on whether or not the video of the program to be broadcast in the future is known is obtained. It is possible,
In the program recording reservation, the control of the recording device corresponding to the video becomes possible.

Further, in the digital signal receiving apparatus shown in the block diagram of FIG. 5, the operation of the digital signal receiving apparatus when detecting whether or not recording is possible by using the bit rate of a video signal or an audio signal as compression-related information is described above. Only the differences will be described.

In this embodiment, the compression-related information analysis / extraction section 142 analyzes and extracts the bit rates of the video signal and the audio signal from the SI data as compression-related information. Also, based on the user setting operation, in the recording device setting unit 143, the built-in or externally connected digital video recording device is a “recording device capable of recording only video having a certain bit rate or less”. Set the device setting information. The recording device control unit 144 controls the recording device based on the compression-related information and the recording device setting information.

Further, in the digital broadcast receiving apparatus shown in the block diagram of FIG. 5, the total bit rate of the video signal / audio signal, the number of frames / second of the video signal, the line frequency of the video signal, or the resolution of the video signal are determined. Used as compression-related information, the digital signal receiving device for detecting whether or not recording is possible, based on the compression-related information, and recording device setting information on the compression-related information of a built-in or externally connected digital video recording device. The recording device control section 144 controls the recording device to detect whether or not recording is possible.

FIG. 6 is a block diagram of a digital signal receiving apparatus according to a third embodiment of the present invention. This embodiment is characterized in that compression-related information is extracted by the compression-related information analyzing / extracting unit 14, and a program name column in a program table is identified and displayed by being colored according to the compression-related information for each program. The same means are provided with the same reference numerals in the digital signal receiving apparatus shown in FIG.

In FIG. 6, a program guide display section 31 displays on a screen a video signal decoded by the decoding section 13 and a program table which can be color-coded. The other points are the same as those of the embodiment shown in FIG.

Next, the operation of the digital signal receiving apparatus 100 according to this embodiment will be described. In the digital broadcasting, when a program A using the video A and a program B using the video B are scheduled to be broadcasted in the future, it is described that the video A is MP @ ML and the video B is MP @ HL. S
An example of the operation of receiving a bit stream containing I as additional data, analyzing and extracting profile and level information based on the additional data from the packet separating unit 12, and displaying a recording possibility detection result will be described.

Next, the operation of the third embodiment different from the first embodiment shown in FIG. 1 will be described. The program table display unit 3
1 designates a program name field for program A in the program table based on the compression-related information,
A color is assigned to a predetermined color for $ ML, and a program name column for program B is assigned and displayed in a predetermined color for MP @ HL specified in advance. In this way, MP @ ML
When the SI that describes the profile and level information related to the MP @ HL video signal is obtained, the program name column for each video in the program guide is displayed in a predetermined color on the screen.

FIG. 7 shows a display example of a program guide. A channel number column 601 on the display device 600;
A program name column 602 is displayed. A program name column 602a is a program name column for program A, and a program name column 602b is a program name column for program B. As shown in FIG.
By displaying the program in different colors according to the profile and level information, the profile and level information can be visually identified in the program table.

As described above, since the profile and level information can be obtained from the SI data, the profile and level information relating to the video of the program to be broadcasted before receiving the video signal for the program displayed in the program guide, that is, the video to be broadcasted in the future. Can be obtained visually easily by the user.

Further, in the digital broadcast receiving apparatus shown in the block diagram of FIG. 6, the bit rate of the video signal or the audio signal, the total bit rate of the video signal and the audio signal, the number of frames / second of the video signal, and the The digital signal receiving apparatus in the case of using the line frequency or the resolution of the video signal as the compression-related information also performs the same processing as in the above-described embodiment, and according to the compression-related information in the program name column in the program table for each program. It is identified and displayed by color coding.

FIG. 8 is a block diagram of a digital signal receiving apparatus according to a fourth embodiment of the present invention. This embodiment is characterized in that compression-related information is extracted by the compression-related information analyzing / extracting unit 14, and a program name column in a program table is identified and displayed using a mark in accordance with the compression-related information for each program. The same means are provided with the same reference numerals in the digital signal receiving apparatus shown in FIG.

In FIG. 8, a program guide display unit 32 displays on a screen a program guide that can be displayed by the video signal decoded by the decoding unit 13 and the mark. Others are the same as the embodiment shown in FIG.

Next, the operation of the digital signal receiving apparatus 100 according to this embodiment will be described. In the digital broadcasting, when a program A using the video A and a program B using the video B are scheduled to be broadcasted in the future, it is described that the video A is MP @ ML and the video B is MP @ HL. S
An example of the operation of receiving a bit stream containing I as additional data, analyzing and extracting profile and level information based on the additional data from the packet separating unit 12, and displaying a recording possibility detection result will be described.

Next, the operation of the third embodiment different from the embodiment shown in FIG. 3 will be described. The program guide display section 32
Is a program A in the program table based on the compression-related information.
In the program name column for the MP @
A mark for ML is displayed, and a mark for MP @ HL specified in advance is displayed in a program name column for program B. In this way, MP {ML and MP}
When the SI describing the profile and the level information relating to the HL video signal is obtained, a predetermined mark is displayed on the screen in the program name column for each video in the program table.

FIG. 9 shows a display example of a program guide. On the display device 700, a channel number column 701,
A program name column 702 is displayed. A program name column 702a is a program name column for program A, and a program name column 702b is a program name column for program B. In FIG. 9, mark 8
01a is a mark displayed corresponding to the program A, and a mark 801b is a mark displayed corresponding to the program B. FIG.
As shown in (1), by displaying a mark for each program according to the profile and level information, the profile and level information can be visually identified in the program table.

As described above, since the profile and level information can be obtained from the SI data, the profile and level information relating to the video of the program to be broadcasted before receiving the video signal for the program to be displayed in the program guide, that is, the video to be broadcasted in the future Can be obtained visually easily by the user.

Further, in the digital signal receiving apparatus shown in the block diagram of FIG. 8, the bit rate of the video signal or the audio signal, the total bit rate of the video signal and the audio signal, the number of frames / second of the video signal, the The digital broadcast receiving apparatus in the case of using the line frequency or the resolution of the video signal as the compression-related information also performs the same processing as in the above-described embodiment, and the program name column in the program table is set according to the compression-related information for each program. The identification is displayed using the mark.

[0045]

According to the present invention, it is possible to acquire information such as profile and level information or a bit rate relating to a transmitted desired video signal before the desired video signal is received. It is possible to detect whether or not recording can be performed in advance, and to perform color coding or marking based on profile and level information of a program table in advance, thereby providing a digital signal receiving device that is easy to use for the user.

[Brief description of the drawings]

FIG. 1 is a block diagram of a digital signal receiving device according to a first embodiment of the present invention.

FIG. 2 is a block diagram of a conventional digital receiver.

FIG. 3 is a block diagram of a digital signal transmission device according to one embodiment of the present invention.

FIG. 4 is a diagram showing a display example of profile and level information for a program.

FIG. 5 is a block diagram of a digital signal receiving device according to a second embodiment of the present invention.

FIG. 6 is a block diagram of a digital broadcast receiving apparatus according to a third embodiment of the present invention.

FIG. 7 is a diagram illustrating a display example of a program table in which a program name column is color-coded and identified based on profile and level information.

FIG. 8 is a block diagram of a digital broadcast receiving apparatus according to a fourth embodiment of the present invention.

FIG. 9 is a diagram showing a display example of a program table in which a program name column is marked and identified by profile and level information.

[Explanation of symbols]

 Reference Signs List 11 reception unit 12 packet separation unit 13 decoding unit 14 system control unit 15 display unit 41 SI data supply unit 42 data multiplexing unit 43 transmission unit 100 digital signal receiving device 101 input terminal 102 output terminal 103 input terminal 104 output terminal 142 compression related information Analysis / extraction unit 143 Recording device setting unit 144 Recording device control unit 400 Digital signal transmission device 401 Input terminal 402 Output terminal 411 Compression related information supply unit

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takumi Okamura 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Inside the multimedia system development headquarters of Hitachi, Ltd. (292) Inventor Shigeru Yoneda 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Pref. Hitachi Systems Multimedia System Development Headquarters (72) Inventor Satoshi Iimuro Kanagawa 292 Yoshida-cho, Totsuka-ku, Yokohama, Japan Hitachi Multimedia Systems Development Headquarters

Claims (27)

[Claims] 1. An input means for inputting a digitized and compressed video signal and audio signal, and an SI for supplying service information SI data indicating information such as a program of the digitized and compressed video signal and audio signal. Data supply means;
Data multiplexing means for multiplexing the digitized and compressed video signal / audio signal from the input means and the service information SI data supplied from the SI data supply means in packet form, and an output of the data multiplexing means Transmitting means for modulating and transmitting a signal, wherein the SI data supplying means comprises compression-related information supplying means for supplying compression-related information of the digitized and compressed video and audio signals. And transmitting the compression related information as a part of the service information SI data. 2. The digital signal transmitting apparatus according to claim 1, wherein said compression-related information is MPEG2 (ISO /
A digital signal transmission device characterized by a profile defined by IEC13818-2). 3. The digital signal transmitting apparatus according to claim 1, wherein the compression-related information is MPEG2 (ISO / ISO /
A digital signal transmission device having a level defined by IEC13818-2). 4. The digital signal transmitting apparatus according to claim 1, wherein said compression-related information is a bit rate of said video signal or audio signal. 5. The digital signal transmitting apparatus according to claim 1, wherein said compression-related information is a bit rate obtained by adding a bit rate of said video signal and a bit rate of said audio signal. 6. A digital signal transmitting apparatus according to claim 1, wherein said compression-related information is the number of frames / second of said video signal. 7. The digital signal transmitting apparatus according to claim 1, wherein said compression-related information is a line frequency of said video signal. 8. The digital signal transmitting apparatus according to claim 1, wherein said compression-related information is a resolution of said video signal. 9. A receiving means for receiving a transmission signal in which a digitized and compressed video signal and audio signal are multiplexed in a packet format together with service information SI data indicating information of a program or the like, and a modulated transmission signal, and packetized and multiplexed. Packet separating means for separating and extracting the separated video signal / audio signal and the service information SI data; decoding means for decoding and outputting the video signal / audio signal separated from the packet separating means; A system control means for analyzing the service information SI data separated from the means and controlling display of the service information SI data, wherein the system control means comprises: Compression of video and audio signals included in service information SI data A digital signal receiving apparatus, comprising: compression-related information analyzing means for analyzing information, wherein the compression-related information analyzing means analyzes the compression-related information. 10. A digital signal receiving apparatus according to claim 9, wherein said compression-related information is MPEG2 (ISO
/ IEC13818-2). A digital signal receiving apparatus characterized in that the profile is defined by: 11. A digital signal receiving apparatus according to claim 9, wherein said compression-related information is MPEG2 (ISO
/ IEC13818-2). A digital signal receiving apparatus characterized by having a level defined by (IEC13818-2). 12. The digital signal receiving apparatus according to claim 9, wherein said compression-related information is a bit rate of said video signal or said audio signal. 13. A digital broadcast receiving apparatus according to claim 9, wherein said compression-related information is a bit rate obtained by combining bit rates of said video signal and said audio signal. 14. The digital signal receiving apparatus according to claim 9, wherein said compression-related information is the number of frames / second of said video signal. 15. A digital signal receiving apparatus according to claim 9, wherein said compression-related information is a line frequency of said video signal. 16. A digital signal receiving apparatus according to claim 9, wherein said compression-related information is a resolution of said video signal. 17. A digitalized and compressed video signal
Receiving means for receiving a transmission signal in which an audio signal is multiplexed and modulated in a packet form together with service information SI data indicating information of the program or the like; and a video signal / audio signal multiplexed in a packet form and the service information SI data. Packet separating means for separating and extracting, decoding means for decoding and outputting video and audio signals separated from the packet separating means, and service information SI data separated from the packet separating means for analyzing the service Information SI
A digital signal receiving apparatus comprising: system control means for controlling display of data; wherein the system control means analyzes compression-related information of a video signal / audio signal included in the service information SI data from the packet separation means. Compression-related information analyzing means, recording device setting means for setting and storing device specifications relating to recording of a built-in or externally connected digital recording device as recording device setting information, and the compression-related information and the recording device setting information. And a recording device control means for detecting whether or not a desired video can be recorded on the recording device and controlling the recording device. The recording device control means performs recording on the recording device in conjunction with a program recording reservation. A digital signal receiving apparatus. 18. The digital signal receiving apparatus according to claim 17, wherein said compression-related information is MPEG2 (IS
O / IEC13818-2) A digital signal receiving apparatus characterized in that the profile is specified by the profile. 19. A digital signal receiving apparatus according to claim 17, wherein said compression-related information is MPEG2 (IS).
O / IEC13818-2) A digital signal receiving apparatus characterized in that the level is specified. 20. A digital signal receiving apparatus according to claim 17, wherein said compression-related information is a bit rate of said video signal or said audio signal. 21. A digital signal receiving apparatus according to claim 17, wherein said compression-related information is a bit rate obtained by combining bit rates of said video signal and said audio signal. 22. A digital signal receiving apparatus according to claim 17, wherein said compression-related information is the number of frames / second of said video signal. 23. A digital signal receiving apparatus according to claim 17, wherein said compression-related information is a line frequency of said video signal. 24. A digital signal receiving apparatus according to claim 17, wherein said compression-related information is a resolution of said video signal. 25. The method of claim 9, 10, 11, 12, 13, 1.
4, 15, 16, 17, 18, 19, 20, 21, 2,
25. The digital signal receiving apparatus according to 2, 23, or 24, further comprising: a program table display unit that extracts information on a desired program from the service information SI data and displays a program table. A digital signal receiving apparatus comprising program identification display means for displaying each program name column in the program table for each program in accordance with the type of compression-related information. 26. The digital signal receiving apparatus according to claim 25, wherein the program identification display is performed by color-coding each program name column in the program table according to the type of the compression-related information for each program. A digital signal receiving apparatus. 27. The digital signal receiving apparatus according to claim 25, wherein the program identification display includes a mark prepared for each program in the program table according to the type of the compression-related information. A digital signal receiving device characterized in that the digital signal receiving device is used for identification display.