JPH11168718A - Digital satellite broadcasting receiver - Google Patents

Abstract

(57) Abstract: A digital satellite broadcast receiver suitable for efficiently extracting a transport stream from a digital receiver in digital satellite broadcasting in which a plurality of transport streams are multiplexed. Output means for outputting a multiplex transport stream decoded by a transmission path decoding means to the outside,
By providing input means for externally inputting a multiplexed transport stream to the multiplexed transport stream separating / selecting means, the television receiver or VTR can be used even in digital satellite broadcasting in which a plurality of transport streams are multiplexed. Thus, a digital satellite broadcast receiver suitable for being incorporated in a device or the like can be realized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a digital satellite broadcast in which a plurality of transport streams are multiplexed.
The present invention relates to a digital satellite broadcast receiver suitable for efficiently extracting a transport stream from a digital receiver.

[0002]

2. Description of the Related Art Digital satellite broadcasting using a broadcasting satellite (BS) is planned, and examples of a transmission system and a receiver are described in "Technical Report of the Institute of Image and Media Engineers of Japan", "Study of Satellite ISDB Transmission System", Vol.
21, No. 25, pp. 1-5 (March 1997). BS
In the digital satellite broadcasting using the CS digital broadcasting, a plurality of transport streams by a plurality of operators are planned for a single transport stream by a single operator, and a transmission control signal is multiplexed into a broadcast wave. As a result, the receiver is notified of information on the multiplexed transport streams and information on the modulation scheme.

The conventional CS digital satellite broadcasting has a transmission method described in “Digital Broadcasting” (January 1996) of the Journal of the Institute of Television Engineers of Japan. However, a plurality of digitally compressed (MPEG2) programs and data are packet-multiplexed. , A single transport stream that has been scrambled and error coded is transmitted by QPSK digital modulation.

FIG. 13 shows a conventional example of a CS digital satellite broadcast receiver. The figure shows the main part, the display means and modem
IC card input / output interface means and the like are omitted. 1 is a tuner, 2 is a transmission line decoding means 3, is a descrambling means, 4 is a transport stream packet separating means, 5 is a digital compression decompression means (MPEG decoder), 6 is a video processing, 7 is an audio processing, 8 is a A control microcomputer, 9 is a digital satellite broadcast receiver, 100 is a high frequency input terminal, 101 is a transport stream input / output terminal, 102 is a video output terminal, and 103 is an audio output terminal.

[0005] The digital satellite broadcast receiver 9 is an outdoor unit.
(Not shown), a 1 GHz band digital modulated signal is
Input from 0, the desired channel is tuned by the tuner 1, subjected to quadrature detection, and input to the transmission path decoding means 2. The transmission path decoding means 2 includes QPSK demodulation, error correction (FEC), inverse energy spreading, deinterleaving, and the like, and decodes a transport stream from a digital modulation signal. The decoded transport stream is input to the descrambling means and, if scrambled, is released and input to the transport stream packet separating means 4. The transport stream packet separating means 4 selects program information and compressed data of a desired program, and the video and audio information are digitally expanded by the MPEG decoder 5, and output to the video output 102, An audio output 103 is output. The transport stream input / output terminal 101 is used for connection to an external device for data broadcasting and video recording / playback using the transport stream decoded on the transmission path.

[0006]

However, the conventional example described above has a drawback that it is not compatible with extracting a plurality of transport streams to the outside and using them.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned drawbacks, and to receive digital satellite broadcasting suitable for efficiently extracting a transport stream from a digital receiver in digital satellite broadcasting in which a plurality of transport streams are multiplexed. Offer machine.

[0008]

In order to achieve the above object, a digital satellite broadcast receiver according to the present invention comprises: an output means for outputting a multiplexed transport stream decoded by a transmission path decoding means to the outside; And / or input means for inputting the multiplexed transport stream to the multiplexed transport stream separating / selecting means, thereby outputting the multiplexed transport stream to an external device, Processing becomes possible. Also, the input means can process the multiplexed transport stream from the external device in the same way as receiving the broadcast wave by using the separating / selecting means of the heavy transport stream in the digital satellite broadcast receiver.

Further, an output means for outputting the single transport stream selected by the input / output terminal of the multiplex transport stream and the transport stream separating / selecting means to the outside, and a single transport stream from the outside By providing both or one of the input means for inputting the stream to the packet separating means of the transport stream, the output of the multiplexed transport stream is processed by an external device, and the output from the multi-digital satellite broadcast receiver as a single transport stream is provided. Using the transport stream packet separation / selection means, processing can be performed in the same manner as when a broadcast wave is received.

A selection means for switching between input / output of a multiplex transport stream and input / output of a single transport stream is provided, and the selection means is connected to the input side and the output side of the separation / selection means for the multiplex transport stream. Multiplexing with a single input / output unit or input / output of a single transport stream.

[0011] In the case of supporting a scrambled and multiplexed transport stream, descrambling means is provided between the demultiplexing / selecting means for the multiplexed transport stream and the packet demultiplexing of the transport stream. Is performed on the output side of the descrambling means, so that a function similar to the conventional example can be obtained for a single transport stream.

As another deciding means corresponding to the scrambled and multiplexed transport stream, a selecting means and a descrambling means are provided, and the selecting means is connected to the input side and the output side of the multiplex transport stream separating / selecting means. By arranging descrambling means between the selection means and an external connection terminal, and inputting / outputting an external multiplexed or single transport stream via the descrambling means, the entire multiplexed transport stream is scrambled. In this case, a function that can cope with the situation is obtained.

The input / output switching control of the external multiplex or single transport stream by the selecting means is performed manually or by a control signal from the outside, so that the setting according to the device connected to the outside becomes possible. further,
In order to perform the switching easily, the switching control of the input / output of the external multiplexed or single transport stream is performed by controlling the control signal by the control microcomputer inside the digital satellite broadcast receiver or the control signal from the outside. Achieved by doing both.

When a transport stream is used by an external computer as a device connected to the outside, it corresponds to the multiplex or single transport stream input / output terminal of the digital satellite broadcast receiver described above. It can be easily realized by connecting the input / output terminals of the computer.

At least a tuner, digital demodulation and F
A transmission path decoding unit including an EC and a deinterleave, a decoding control unit for controlling decoding based on information of a multiplex signal, and a separation / selection unit for a multiplexed transport stream are arranged in one housing, and a multiplex transport stream is provided. In the case of digital satellite broadcasting in which a plurality of transport streams are multiplexed, a small front end having both input and / or output terminals and output terminals of a multiplex transport stream separating / selecting means is provided. A small-sized digital satellite broadcast receiver suitable for being built in a receiver or a VTR can be realized.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing a digital satellite broadcast receiver according to a first embodiment of the present invention. In the figure, the same numbers as those in the other figures indicate the same functional blocks, and 1 is a tuner, 2
Is a transmission path decoding means, 10 is a decoding control means using a transmission control signal, 11 is a multiplexed transport stream separating / selecting means, 4 is a transport stream packet separating means, and 5 is a digital compression decompressing means (MPEG decoder). ), 6 is video processing, 7 is audio processing, 8 is a control microcomputer, 9 is a digital satellite broadcast receiver, 100 is a high-frequency input terminal, 201 is an input / output terminal of a multiplex transport stream, 102 is a video output terminal, and 103 is a video output terminal. Audio output terminal.

The digital satellite broadcast receiver 9 is an outdoor unit
(Not shown), a 1 GHz band digital modulated signal is
Input from 0, the desired channel is tuned by the tuner 1, subjected to quadrature detection, and input to the transmission path decoding means 2. The digitally modulated signal is obtained by multiplexing a plurality of transport streams from a plurality of carriers and a transmission control signal, and transmitting information on the multiplexed transport stream and information on a modulation method by the transmission control signal. The decoding control means 10 controls the transmission path decoding means 2 and the multiplex transport stream separation / selection means 11 according to the information of the transmission control signal.
The transmission path decoding means 2 is composed of digital demodulation, error correction (FEC), inverse energy spreading, deinterleaving, and the like of BSPK, QPSK, and 8PSK, and decodes a multiplex transport stream from a digital modulation signal according to the decoding control means 10. The decoded multiplexed transport stream is input to the multiplexed transport stream separating / selecting means 11, and a desired single transport stream is separated and selected from the multiplexed transport stream according to the decoding control means 10. It is input to the packet separating means 4. The transport stream packet separating means 4 selects program information and compressed data of a desired program, and the video and audio information are digitally expanded by the MPEG decoder 5, and output to the video output 102, An audio output 103 is output. The multiplex transport stream input / output terminal 201 outputs the multiplex transport stream decoded from the transmission path decoding means 2 to the outside,
Alternatively, a multiplex transport stream is input from the outside and the multiplex transport stream separation / selection means 11
By inputting the data to the device, connection with an external device for performing data service and video recording / playback using the multiplex transport stream becomes possible.

FIG. 2 is a block diagram showing a digital satellite broadcast receiver according to a second embodiment of the present invention. Reference numeral 101 denotes an input / output terminal of a single transport stream. In this embodiment, a single transport stream input / output terminal 101 is provided in the embodiment of FIG. 1, and a single transport stream selected from the multiplex transport stream separation / selection means 11 is output to the outside. Alternatively, by inputting a single transport stream from the outside and inputting it to the transport stream packet separating means 4, it is possible to support either a multiplexed or a single transport stream, It is possible to connect to an external device for performing data service and video recording / playback using the transport stream.

FIG. 3 is a block diagram showing a digital satellite broadcast receiver according to a third embodiment of the present invention. 12 is a selection means, and 202 is a single / multiple transport stream input / output terminal. This embodiment is different from the embodiment of FIG. 2 in that the functions of the single transport stream input / output terminal 101 and the multiplex transport stream input / output terminal 201 are selected by the selecting means 12.
Is assigned to one single / multiple transport stream input / output terminal 202. The selection means 12 is connected to the signal paths on the input side and output side of the multiplex transport stream separation / selection means 11. When the selection unit 12 selects the input side of the multiplex transport stream separation / selection unit 11, the single / multiple transport stream input / output terminal 202 functions as a multiplex transport stream input / output terminal, If the output side of the separation / selection means 11 is selected, a single / multiple transport stream input / output terminal
202 functions as a single transport stream input / output terminal. According to the present embodiment, connection to an external device for performing data service and video recording / playback using either a multiplexed or a single transport stream with one input terminal can be easily performed.

FIG. 4 is a block diagram showing a digital satellite broadcast receiver according to a fourth embodiment of the present invention. Reference numeral 3 denotes a descrambling means. The descrambling means 3 is disposed between the multiplex transport stream separating / selecting means 11 and the transport stream / packet separating means 4, and the multiplex transport stream separating / selecting means 1 is provided.
If the single transport stream selected by 1 is scrambled, it is descrambled and input to the transport stream / packet separation means 4, and the selection means 12 is input to the multiplex transport stream separation / selection means 11. Side and descramble means 3
Is connected to the output side.

This embodiment is an embodiment corresponding to a single transport stream scrambled with respect to the embodiment of FIG. 3. When the selecting means 12 selects a single transport stream, the descrambling means 3 is used. Is output from the single / multiple transport stream input / output terminal 202. According to this embodiment, connection to an external device for performing data service and video recording / playback using a transport stream of either a multiplexed or scrambled single transport stream with one input terminal can be easily performed.

FIG. 5 is a block diagram showing a digital satellite broadcast receiver according to a fifth embodiment of the present invention. 14 is a descrambling means, and 203 is a single / multiple transport stream input / output terminal. The descrambling means 14 is arranged between the selecting means 12 and the single / multiple transport stream input / output terminal 203, and performs descrambling when the transport stream selected by the selecting means 12 is scrambled. Then, it outputs to the single / multiple transport stream input / output terminal 203. The selection means 12 is connected to the input side and the output side of the multiplex transport stream separation / selection means 11.

This embodiment is an embodiment corresponding to both the single and multiplexed scrambled transport streams in the embodiment shown in FIG. 4, and the transport stream selected by the selecting means 12 is scrambled. If it is, the scramble is released by the release command of the control signal and output to the single / multiple transport stream input / output terminal 203. There is also a single scrambled
It is clear that embodiments with descrambling for multiple transport stream inputs are also easily realized. According to the present embodiment, it is possible to easily connect to an external device for performing data service and video recording / reproduction using any of the multiplexed or single transport stream scrambled by one input terminal.

FIG. 6 is a block diagram showing a digital satellite broadcast receiver according to a sixth embodiment of the present invention. Reference numeral 203 denotes an input / output terminal for a single / multiple transport stream, and reference numeral 204 denotes a single / multiple transport stream switching control terminal.
In this embodiment, the input / output terminal 202 of the single / multiple transport stream in FIG. 4 is divided into the input / output terminal 203 of the single / multiple transport stream and the transport stream switching control terminal 204. The switching control terminal 204 is connected to the switching control terminal of the selection means 12. In this embodiment, the connection of the switching means 12 is switched between the connection to the input side of the multiplex transport stream separation / selection means 11 and the connection to the output side of the descrambling means 3 by a switching signal applied from the outside. .

According to the present embodiment, for example, the input / output terminal 202 of single / multiple transport stream and the transport stream switching control terminal 204 are connected to another connection device, and a switching signal applied from the connected control device. Single / multiple transport stream input / output terminals 20
3 can be the desired function of single or multiple transport stream, one input terminal to perform data service and video recording / playback using either multiple or scrambled single transport stream transport stream Can be more easily connected to external devices.

FIG. 7 is a block diagram showing a digital satellite broadcast receiver according to a seventh embodiment of the present invention. 33 is a transport stream changeover switch. The transport stream changeover switch 33 is connected to a changeover control terminal of the changeover means 12. This embodiment is different from the embodiment of FIG. 6 in that the transport stream switching switch 3 is provided so that the transport stream switching control can be easily performed manually.
3 is provided.

FIG. 8 is a block diagram showing a digital satellite broadcast receiver according to an eighth embodiment of the present invention. 34 is a switching means. The switching means 34 has two switching control terminals, one of which is a transport stream switching control terminal 204 of a single / multiple transport stream input / output terminal 202.
The other is connected to the control microcomputer 8 in the digital receiver.
Connected to the data bus. In this embodiment, a switching control means 34 is provided for the switching means 12 of the embodiment of FIG. 6 so that the control microcomputer 8 in the digital receiver can control the switching means. The switching control is characterized in that it can be performed either by the control microcomputer 8 in the digital receiver or by a control signal externally applied to the transport stream switching control terminal 204.

FIG. 9 is a block diagram showing the application of the data service receiving system to the digital satellite broadcast receiver of the present invention. 20 is a data service receiving means, and 21 is a data processing means. The data processing means 21 of the data service receiving means 20 is a single / multiple transport stream input / output terminal 202 of the digital satellite broadcast receiver of the embodiment of FIG.
And the data service receiving means can easily input and output data in the format of a desired transport stream.

FIG. 10 is a block diagram showing the application of the digital satellite broadcast receiver of the present invention to a television and a video recording / reproducing system. 22 is a video recording / reproducing means, 23 is a recorded data processing means, 24 is a recorded data reproducing processing means 25 is a recording means, 40 is a digital satellite broadcast receiver built-in, 41 is a display means, and 42 is a speaker. The video recording / playback means 22 inputs signal processing for recording the transport stream input to the data processing means 21 to the recording means via the recording data processing means 23,
At the time of reproduction, it is input to the data processing 21 via the reproduction processing means 24 and connected to the single / multiple transport stream input / output terminal 202 of the digital receiver. The television 40 with a built-in digital satellite broadcast receiver has, for example, the digital satellite broadcast receiver shown in FIG. 4, the display means 41, and the speaker 42 arranged in one housing.

According to this embodiment, the video recording / playback means 2
By connecting 2 to the single / multiple transport stream input / output terminal 202 of the television 40 with a built-in digital satellite broadcast receiver, a video recording / playback system using multiple transport streams can be easily configured.

Although the present embodiment has been described with reference to the example of the digital satellite broadcast receiver shown in FIG. 4, it is apparent that a similar effect can be obtained by applying another embodiment.

FIG. 11 is a block diagram showing another data service receiving system using the digital satellite broadcast receiver of the present invention. 28 is a multiplex transport stream separating / selecting means, 29 is a descrambling means, and 30 is a transport stream packet separating means. This embodiment is different from the embodiment shown in FIG. 9 in that the data service receiving means 20 includes a multiplex transport stream separating / selecting means 28, a descrambling means 29, and a transport stream packet separating means 30. It is.

According to this embodiment, the multiplex transport stream separating / selecting means 28 and the descrambling means 2
9. By incorporating a transport stream packet separating means in the data service receiving means 20, a single stream from the multiplexed transport stream obtained from the single / multiple transport stream input / output terminal 202 of the digital satellite broadcast receiver 9 is output. The separation and selection of the transport stream can be easily obtained and used without using the function of the digital satellite broadcast receiver 9.

FIG. 12 is a block diagram showing an embodiment of a front end unit applied to the digital satellite broadcast receiver of the present invention. 13 is the front end unit, 300
Denotes a multiplex / single transport stream separating / selecting means, and 301 denotes a multiplex transport stream output.

In this embodiment, the front end unit 13
In order to incorporate demodulation processing corresponding to both BPSK, QPSK and 8PSK, and a tuner 1, a transmission path decoding means 2, a decoding control means 10 by a transmission control signal, and a separation / selection means 11 for multiplexed transport streams. This is an example in which a digital satellite broadcast receiver can be miniaturized and easily incorporated into a television. Although the present embodiment is a television, it is apparent that similar effects can be obtained with a VTR.

[0037]

According to the present invention, the output means for outputting the multiplexed transport stream decoded by the transmission path decoding means to the outside, and the multiplexed transport stream input from the outside to the multiplexed transport stream separating / selecting means. By providing both or any of the input means for performing the above, it is possible to obtain an effect that even a single multiplexed transport stream can be extracted and re-inputted. Further, according to the present invention, it is possible to realize a digital satellite broadcast receiver suitable for being incorporated in a television receiver, a VTR or the like even in a digital satellite broadcast in which a plurality of transport streams are multiplexed.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a digital satellite broadcast receiver according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a digital satellite broadcast receiver according to a second embodiment of the present invention.

FIG. 3 is a block diagram showing a digital satellite broadcast receiver according to a third embodiment of the present invention.

FIG. 4 is a block diagram showing a digital satellite broadcast receiver according to a fourth embodiment of the present invention.

FIG. 5 is a block diagram showing a digital satellite broadcast receiver according to a fifth embodiment of the present invention.

FIG. 6 is a block diagram showing a digital satellite broadcast receiver according to a sixth embodiment of the present invention.

FIG. 7 is a block diagram showing a digital satellite broadcast receiver according to a seventh embodiment of the present invention.

FIG. 8 is a block diagram showing a digital satellite broadcast receiver according to an eighth embodiment of the present invention.

FIG. 9 is a block diagram showing an application of the digital satellite broadcast receiver of the present invention to a data service receiving system.

FIG. 10 is a block diagram showing an application of the digital satellite broadcast receiver of the present invention to a television and a video recording / reproducing system.

FIG. 11 is a block diagram showing an application of the digital satellite broadcast receiver of the present invention to a digital satellite broadcast system.

FIG. 12 is a block diagram showing an embodiment of a front end unit applied to the digital satellite broadcasting receiver of the present invention.

FIG. 13 is a block diagram showing a conventional CS digital satellite broadcast receiver.

[Explanation of symbols]

1 ... Tuner, 2 ... Transmission path decoding means, 3 ... Descramble means, 4 ... Transport / packet separation means, 5 ... Digital expansion means, 6 ... Video processing, 7 ... Sound processing, 8 ... Control microcomputer, 9 ... Digital Satellite broadcast receiver, 10: decoding control means, 11: multiplex transport stream separation / selection means, 12: selection means, 13: front end unit, 14 ...
Descrambling means, 20 ... data service receiving means, 21
... Data processing means, 22 ... Video recording / playback means, 23 ... Digital recording processing means, 24 ... Digital playback processing means, 25 ... Recording means, 28 ... Multiple transport stream separation / selection means, 29 ... Descramble means, 30 ... Transport stream / packet separation means, 33 ... Transport stream changeover switch, 34 ... Selection means, 40 ... TV with built-in digital satellite broadcast receiver, 41 ... Display means, 42 ... Speaker, 43 ... TV monitor, 100 ... High frequency input Terminal, 101: single transport stream input / output terminal, 102: video output terminal, 103: audio output terminal, 201: multiple transport stream input / output terminal, 202, 203: single / multiple transport stream input / output terminal, 204: transport stream switching control terminal, 300: multiplex transport stream input / output terminal, 301: single transport Stream output terminal.

Claims (14)

[Claims] 1. A digital modulation wave in which a plurality of transport streams in which video, audio and data are compressed are multiplexed, and at least a tuner, digital demodulation and FE
C, de-interleave, etc., a transmission path decoding means, a decoding control means for controlling decoding based on information of a multiplex signal, a separation / selection means for a multiplexed transport stream, and a packet information of the selected transport stream. In a digital satellite broadcast receiver comprising a demultiplexing unit and a decompressing unit for compressed video, audio and data, an output unit for outputting a multiplexed transport stream decoded by the transmission path decoding unit to the outside, A digital satellite broadcast receiver comprising: input means for inputting a multiplex transport stream to a multiplex transport stream separation / selection means. 2. The digital satellite broadcast receiver according to claim 1, wherein: an output unit for outputting the multiplexed transport stream decoded by the transmission path decoding unit to the outside; And / or an input means for inputting to the port stream separation / selection means, an output means for outputting a single transport stream selected by the multiplex transport stream separation / selection means to the outside, and a single Digital satellite comprising a multiplexed transport stream and / or a single transport stream input / output means for inputting the transport stream to the transport stream packet separating means. Broadcast receiver. 3. The digital satellite broadcasting receiver according to claim 2, wherein: a single transport stream selected by the multiplex transport separating / selecting means is output to the outside; Input means for inputting a single transport stream to a packet separating means for the transport stream. 4. The digital satellite broadcast receiver according to claim 2, further comprising a selection unit, wherein said selection unit is connected to an input side and an output side of said multiplex transport stream separation / selection unit, A digital satellite broadcast receiver wherein external multiplexed or single transport streams are selectively input / output by means. 5. The digital satellite broadcast receiver according to claim 2, wherein a descrambling means is provided between said multiplex transport stream separating / selecting means and said transport stream packet separating means. A digital satellite broadcast receiver, wherein input / output of the single transport stream to / from the outside is performed at an output side of the descrambling means. 6. The digital satellite broadcast receiver according to claim 4, further comprising: descrambling means, wherein said selecting means is connected to an input side and an output side of said multiplex transport stream separating / selecting means, A digital satellite broadcast receiver, wherein input / output of an external multiplexed or single transport stream is selectively performed by the selecting means via the descrambling means. 7. The digital satellite broadcast receiver according to claim 6, wherein the switching control of input / output of an external multiplex or a single transport stream by said selecting means is performed manually or by a control signal from the outside. Digital satellite broadcast receiver. 8. The digital satellite broadcasting receiver according to claim 6, wherein the switching control of input / output of an external multiplexed or single transport stream by said selecting means is performed inside the digital satellite broadcasting receiver. A digital satellite broadcast receiver, which is performed by one or both of a control signal and an external control signal. 9. A digitally modulated wave in which a plurality of transport streams in which video, audio and data are compressed are multiplexed, and at least a tuner, digital demodulation and FE
C, de-interleave, etc., a transmission path decoding means, a decoding control means for controlling decoding based on information of a multiplex signal, a separation / selection means for a multiplexed transport stream, and a packet information of the selected transport stream. In a digital data receiving system including a digital satellite broadcast receiving unit including a separating unit and a decompressing unit for compressed video, audio, and data, and a device having a multiplexed or single transport stream data processing unit, The digital satellite broadcast receiving unit is the digital satellite broadcast receiver according to any one of claims 1 to 7, wherein the digital satellite broadcast receiver and the data processing unit are:
A digital data receiving system connected by input / output signals of multiplex or single transport stream. 10. A digitally modulated wave in which a plurality of transport streams in which video, audio and data are compressed are multiplexed, and at least a tuner, digital demodulation and FDM are performed.
Transmission path decoding means including EC and deinterleaving;
Decoding control means for controlling decoding based on information of the multiplex signal;
A digital satellite broadcast receiving unit comprising: means for separating and selecting a multiplexed transport stream; means for separating packet information of the selected transport stream; and means for expanding compressed video, audio and data; A digital satellite broadcast receiver according to any one of claims 1 to 7, wherein in the television receiver comprising means, an audio processing means, an image display means, and a speaker, the digital satellite broadcast receiving section is provided. A digital satellite television receiver. 11. A digitally modulated wave in which a plurality of transport streams in which video, audio and data are compressed are multiplexed, and at least a tuner, digital demodulation and FDM are performed.
Transmission path decoding means including EC and deinterleaving;
Decoding control means for controlling decoding based on information of the multiplex signal;
A digital satellite broadcast receiving unit comprising: means for separating and selecting a multiplexed transport stream; means for separating packet information of the selected transport stream; and means for expanding compressed video, audio and data; 8. A digital video recording / playback system comprising means, an audio processing means, and a video recording / playback unit comprising video recording / playback means, wherein the digital satellite broadcast receiving unit is a digital video broadcast receiver according to any one of claims 1 to 7. A satellite broadcast receiver,
The digital satellite broadcast video recording / playback system, wherein the digital satellite broadcast receiver and the video recording / playback unit are connected by multiplexed or single transport stream input / output signals. 12. The digital data receiving system according to claim 9, wherein said data processing means includes at least means for separating / selecting a multiplexed transport stream and means for separating packet information of the selected transport stream. A digital data receiving system, comprising: 13. The digital video recording / reproducing system according to claim 11, wherein the video recording / reproducing unit is configured to separate and select at least a multiplexed transport stream and a packet information of the selected transport stream. A digital video recording / reproducing system characterized by comprising means. 14. A digitally modulated wave in which a plurality of transport streams in which video, audio and data are compressed are multiplexed, and at least a tuner, digital demodulation and FDM are performed.
Transmission path decoding means including EC and deinterleaving;
Decoding control means for controlling decoding based on information of the multiplex signal;
Means for separating / selecting multiplexed transport streams, means for separating packet information of the selected transport stream, and means for decompressing compressed video, audio, and data are arranged in one housing. A front-end unit having a transport stream input and / or output terminal.