JP3146969B2 - Digital broadcast receiving terminal device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a packet including program specification information on a plurality of programs,
Digital broadcast reception for receiving a digital broadcast wave obtained based on a bit stream of digital data obtained by time-division multiplexing a packet including at least a packet including information on the content of an individual program itself A terminal device, in particular, selects a packet including information of a program to be received from a bit stream of digital data obtained by demodulating a received digital broadcast wave, and configures the packet including program specification information. The present invention relates to a digital broadcast receiving terminal device capable of performing signal processing of a bit stream of digital data obtained by recording and reproducing with a recording / reproducing device together with a packet being performed.

[0002]

2. Description of the Related Art Digital communication satellite broadcasting, in which digital data of a plurality of programs each of which has been compressed at a high efficiency and time-division multiplexed to form a digital broadcasting wave, and which is broadcast using a communication satellite, is already in use. In addition to being practically used in the country, various technical studies for practical use are also being made in Japan. In the above-mentioned digital communication satellite broadcasting, various programs (programs) are highly efficiently compressed by, for example, an MPEM2 encoder to form a transport packet (TP) having a data amount of 188 bytes. Divided and multiplexed transport streams (TS) are transmitted in parallel by the number of transponders (satellite repeaters).

Therefore, a viewer of a digital communication satellite broadcast receiving a digital broadcast wave in which a large number of programs are transmitted substantially simultaneously selects a program desired to be received from a large number of receivable programs ( In order to facilitate the above-described program selection operation (tuning operation), in the case of MPEG, program specification information (program specification information... Pro) for a plurality of programs must be performed.
A packet including gram Specific Information (PSI) is provided. And
Time-division multiplexing is performed on a packet including at least a packet including program specification information on the plurality of programs and a packet including information on the content of the individual program itself. A digital broadcast wave obtained based on a bit stream of digital data is transmitted from a transmitting side to a receiving side, and the digital broadcast receiving terminal device (set-top box... The information of the packet including the program specification information of the program is effectively used, so that the program desired to be received can be easily selected (tuning).

FIG. 10 shows a configuration example of an MPEG2 transport stream (TS) composed of 188-byte transport packets (TP), and a configuration example of a transport packet. The main part of the transport packet shown in FIG. 10 will be described as follows. First, an 8-bit synchronization byte is data used by a decoder to detect the start of a transport packet, and a 1-bit error indication indicates whether a bit error exists in the transport packet. Is shown. Further, the 13-bit PID (packet identifier) is stream identification information and indicates the attribute of the individual stream of the packet. For example, a transport packet in which the 13-bit PID is “0” is , PAT (Program Association Table) described later with reference to FIG.

[0005] At least a packet configured to include program specification information (PSI) for a plurality of programs described above and a packet configured to include information on the contents of individual programs themselves are included. A digital broadcast receiving terminal (STB) that receives a digital broadcast wave obtained based on a bit stream of digital data obtained by time-division multiplexing a packet includes a tuner unit 1 and a digital demodulation unit as illustrated in FIG. And an error correction unit 2 and a system control unit 3 including a memory and a computer
, A program information analysis unit 4, a demultiplexer 5, a video and audio MPEG decoder (decoder) 6, a selection information input unit 7, and the like. In the digital broadcast receiving terminal device STB to which the digital broadcast wave received by the antenna 9 is input, the digital broadcast wave is amplified by the tuner unit 1, frequency-converted, and given to the digital demodulation and error correction unit 2, where the digital broadcast wave is converted. The bit stream of the demodulated digital data is error-corrected.

[0006] The bit stream of the digital data on which the error correction has been performed is supplied to a demultiplexer 5 and a program information analysis unit 4. The program information analysis unit 4 adds the program title information obtained in association with the program specification information on a plurality of programs in the bit stream of the digital data after error correction to the adder 8 and the output terminal 10. To a display (not shown). The viewer looks at the title information of the program displayed on the display surface of the display, selects a program desired to be received, and selects information for enabling reception of the selected target program. When set in the input unit 7, the system control unit 3 in the digital broadcast receiving terminal STB
In this embodiment, only the packet including the information on the selected program to be received is supplied to the decoder 6 via the demultiplexer 5.

The above decoder (MPEG for video and audio)
The decoder 6 performs a decoding operation on the digital data of the video information packet and the audio information packet supplied thereto, and outputs the decoded video signal and audio signal via the adder 8. As described above, the digital broadcast receiving terminal STB can output the video signal and the audio signal of one specific program selected by the viewer from the plurality of programs received by the digital broadcast receiving terminal STB. . Also, the video signal and audio signal of one specific program output from the digital broadcast receiving terminal STB are conventionally used worldwide as recording / reproducing devices for recording / reproducing video signals in the form of analog signals. Helical scan video, which is widely used
It is needless to say that a cassette recorder (VCR) or a video tape recorder (VTR) can be used to record and reproduce data as needed.

[0008] The digital broadcast wave received by the digital broadcast receiving terminal STB described above includes a packet including program specification information on a plurality of programs and a packet of an individual program as described above. A digital broadcast wave obtained based on a bit stream of digital data obtained by time-division multiplexing a packet including at least a packet including information of the content itself, wherein the digital broadcast receiving terminal The bit stream of digital data output from the digital demodulation and error correction unit 2 in the device STB includes all of a plurality of pieces of program information transmitted from the transmission side, but in the conventional digital broadcast receiving terminal device STB, Even if there is another program desired to be received other than the specific one program selected by the viewer, Because it can not be outputted by decoding the program, viewers bit stream of digital data of a program other than the selected specific single program had never used. The above point is that, for example, the digital broadcast receiving terminal STB is provided with a decoder for each of a plurality of programs desired to be received, and the individual signals decoded by the respective decoders are recorded by the individual recording devices. However, such a solution cannot be adopted at all because the configuration of the apparatus is complicated and the cost is high.

By the way, a helical scan type video cassette recorder (VCR) or video, which is widely used as a recording / reproducing apparatus for recording / reproducing the video signal in the form of the analog signal described above, has been widely used worldwide. Paying attention to the fact that a tape recorder (VTR) can be used as a large-capacity memory for digital data in digital equipment, recently, S-VHS (registered trademark) has been used.
Using the VCR mechanism as it is, the current VH
A D-VHS VCR has been proposed that has compatibility with the S-system and enables recording and reproduction of a bit stream of digital data supplied via a digital interface. Since the D-VHS VCR is capable of recording and reproducing a bit stream of digital data as described above, the digital broadcast receiving the digital broadcast wave by the digital communication satellite broadcast is used. From the bit stream of digital data including all of the plurality of program information output from the digital demodulation and error correction unit 2 in the receiving terminal device STB, the bit stream of digital data corresponding to a plurality of programs desired to be received is converted. It was considered that the above-mentioned problems could be satisfactorily solved by selectively recording and reproducing.

[0010]

However, the operation of selecting a program in the conventional digital broadcast receiving terminal STB is as follows.
Since the processing is performed in accordance with the sequential steps in the flowchart illustrated in FIG. 6, the packet including the program specification information about the plurality of programs output from the digital demodulation and error correction unit 2 as described above. And a packet including program specification information for a plurality of programs from a bit stream of digital data including a packet including information on the contents of the individual programs. And selecting and recording a packet corresponding to one or more programs to obtain a recorded magnetic tape, and supplying a bit stream of digital data reproduced from the recorded magnetic tape to the digital broadcast receiving terminal STB. , Normal playback operation could not be performed.

The above point will be specifically described as follows. First, the digital broadcast wave received by the digital broadcast receiving terminal STB converts various programs (programs) into M.
Transport packets (T packets) each having a high-efficiency compression with a PEM2 encoder and each having a data amount of 188 bytes
P), the transport stream (TS) obtained by time-division multiplexing the transport packets is transmitted in parallel by the number of transponders (satellite repeaters). Information sent from the transmitting side to facilitate the selection operation (tuning operation) of
That is, program specification information for a plurality of programs (program specification information... Program Specific Information ← PS
Packets including I) include those shown in FIG.
A packet including a PAT (program association table ← program table) illustrated in FIG. 12 and a PMT (program map table) illustrated in FIG.
It is assumed that the packet is a packet including a table (a program correspondence table).

The PAT shown in FIG. 11 and the PMT shown in FIG. 12 correspond to the payload (information) in the transport packet shown in FIG.
In a packet configured to include information on the content itself of an individual program, the payload (information) in the transport packet illustrated in FIG. The information (video information, audio information) of the content of the individual program itself is provided in the area shown as ()). FIG. 7 shows a conventional digital broadcast receiving terminal STB shown in FIG.
7 is a diagram illustrating a state in which a program selecting operation is performed in accordance with sequential steps in the flowchart illustrated in FIG. 6 for easy understanding.

First, FIG. 7A shows a 13-bit PI in the transport packet shown in FIG.
A packet whose D (packet identifier) is “0”;
That is, the transport packet TP (PAT) in which the PAT shown in FIG. 11 is configured in the area shown as the payload (information) in the transport packet shown in FIG. [FIG.
A transport packet whose PID value is 00 described above (a) above] and an area shown as a payload (information) in the transport packet shown in FIG. A transport packet TP (PMT) in which the PMT shown in FIG. 12 is configured [Transportation in which the numerical value of the PID described at the top of FIG. 7A is 05,07,09. Packet] and a transport packet TP configured to include information on the content of the individual program itself in an area shown as a payload (information) in the transport packet shown in FIG. [The numerical value of the PID described in the upper part of FIG.
1,12 ... 32 transport packets]
FIG. 4 is a diagram schematically illustrating a state in which time-division multiplexing is performed and arranged on a time axis.

FIG. 7B shows an example in which the number of programs handled by one transponder (satellite repeater) is three (three programs).
FIG. 3 is a diagram for explaining the contents of an AT (program guide). In this figure, each of all (three in the example) programs # 1 to # 3 handled by one transponder (satellite repeater) is illustrated. For the transport packet in which the PMT of program # 1 exists, the transport packet in which the PMT value of the transport packet in which the individual program correspondence table (PMT) is present is 05. A packet, and P of program # 2
The transport packet in which the MT exists is the PID
Is a transport packet having a numerical value of 07,
Further, a PAT is described as an example in which the transport packet in which the PMT of the program # 3 exists is a transport packet having a PID value of 09.

Next, FIGS. 7 (c) to 7 (e) show the PAT (program table) illustrated in FIG. 7 (b), respectively, for each of the programs # 1 to # 3. A PMT (program) configured in an area indicated as a payload (information) in a transport packet having a numerical value of PID indicated that a separate program correspondence table (PMT) exists for the PMT For example, FIG. 7C shows a program correspondence table (PMT) for program # 1 in the PAT (program table) exemplified in FIG. 7B. 7 is a PMT (program correspondence table) configured in a payload (information) area in a transport packet having a PID having a numerical value 05 indicated as being present.

For example, FIG. 7D shows the state of FIG.
(B) in the PAT (program guide), the payload in the transport packet having a PID with the numerical value 07 indicated as the presence of a program correspondence table (PMT) for program # 2 A PMT (program correspondence table) configured in the area of (information). Similarly, FIG. 7E shows a PAT (program table) illustrated in FIG. The PMT (program correspondence table) configured in the area of the payload (information) in the transport packet having the PID having the numerical value 09 indicated that the program correspondence table (PMT) for the program # 3 exists. ).

A PAT (program guide) illustrated in FIG. 7B corresponding to each of the programs # 1 to # 3.
The P configured in the area of the payload (information) in the transport packet having the PID specified in
MT (program correspondence table) includes audio information, video information, PCR in one specific program handled by the PMT.
The numerical value of the PID of the transport packet in which information such as (program time reference value) exists is shown. That is, for example, P shown in FIG.
The PID that the PMT (program correspondence table) of the program # 1 is configured in the area of the payload (information) in the transport packet by the AT (program table)
In the area of the payload (information) in the transport packet having the numerical value of 05, as shown in FIG. 7C, audio information in the program of the program # 1,
A transport packet in which information such as video information and PCR (program time reference value) is present has a PID of a specific numerical value [PID10, PID11, PID12, PID12, PID12 shown in FIG. PID 15].

The PMT (program table) of the program # 2 is formed in the area of the payload (information) in the transport packet by the PAT (program table) illustrated in FIG. 7 (b). In the area of the payload (information) in the transport packet having the PID value of 07, which is assumed to be present, as illustrated in FIG. , PCR (program time reference value), etc., the transport packet has a specific numerical PID [PID shown in FIG.
20, PID21, PID22, PID25].
According to the PAT (program table) illustrated in (b), the PID (program correspondence table) of the program # 3 is assumed to be configured in the payload (information) area in the transport packet. In the area of the payload (information) in the transport packet whose numerical value is 09, as illustrated in FIG. 7E, audio information, video information, PCR (program time reference A transport packet in which information such as a reference value) exists is identified by a specific numerical PID [PID30, PID31, PI shown in FIG.
D32, PID35].

Now, in the conventional digital broadcast receiving terminal device STB illustrated in FIG. 5, the digital broadcast wave received by the antenna 9 is amplified by the tuner 1 as described above, and after the frequency conversion, the digital broadcast wave is amplified. The program information analysis unit 4 to which the bit stream of the digital data that has been digitally demodulated and error-corrected in the demodulation and error correction unit 2 is supplied, first, as in step (1) in the flowchart of FIG. A transport packet configured to include program specification information on a plurality of programs in a digital data bit stream, that is, a payload (information) in the transport packet shown in FIG. 10. A transport system in which the PAT shown in FIG. A packet TP (PAT) [a transport packet having a PID value of 00 described above in FIG. 7A] is extracted, and a payload (information) in the extracted transport packet is extracted. The information of the PAT (program guide) existing in the area is obtained.

In step (2), a transport packet including a PMT (program correspondence table) corresponding to each program indicated in the PAT (program table) is extracted, and step (3) is performed. ), All PMTs corresponding to each program shown in the PAT (program guide)
It is determined whether or not the processing relating to the (program correspondence table) has been completed. If YES, the process proceeds to step (5).
In the case of O, the process returns to step (1). Next, in step (5), the title information of the program is supplied to the display to display the title of the program. In step (6), the viewer looks at the title of the program displayed on the display and selects the program desired to be received. Select and set the program selection information desired to be received in the input section. In step (7), the system control unit specifies a packet including the information of the program desired to be received, and the demultiplexer is configured to include the information of the program desired to be received. Only packets are provided to the decoder. In step (8), the digital data of the program desired to be received is decoded and a reproduced signal is output.

By the way, the receiving operation of the digital broadcast receiving terminal device as described above, which is performed in accordance with the sequential steps in the flowchart of FIG. 6, corresponds to the digital data supplied to the program information analyzer 4 in the digital broadcast receiving terminal device. In the case where the bit stream of PMT includes a PMT (program correspondence table) corresponding to all programs indicated in the PAT (program guide) indicating program specification information on a plurality of programs, It is performed smoothly,
PAT indicating program specification information on a plurality of programs in a bit stream of digital data supplied to the program information analysis unit 4 in the digital broadcast receiving terminal device
If only a PMT (program correspondence table) corresponding to a part of the programs shown in (program table) is included, the operations of steps (1) to (4) described above are repeated. Step (4) to Step (5)
Therefore, the digital broadcast receiving terminal device cannot decode and output the program information.

The digital broadcast receiving terminal device has an antenna 9
When a digital broadcast wave received by the digital broadcast receiving terminal is being received, the digital data output from the digital demodulation and error correction unit 2 of the digital broadcast receiving terminal device and supplied to the program information analysis unit 4 Because the bit stream contains a PMT (program correspondence table) corresponding to all programs indicated in the PAT (program guide) indicating program specification information on a plurality of programs. Although the operation of the digital broadcast receiving terminal device is performed normally, a packet including program specification information on a plurality of programs output from the digital demodulation and error correction unit 2 and a packet of an individual program From a bit stream of digital data including packets composed of information of the content itself, multiple programs And a packet corresponding to at least one program desired to be received and a packet corresponding to one or more programs desired to be received, to obtain a recorded magnetic tape, and to reproduce a digital signal reproduced from the recorded magnetic tape. The data bit stream is transmitted to the digital broadcast receiving terminal device S.
In the case of being supplied to the TB, a PAT (program table) indicating program specification information for a plurality of programs is included in a bit stream of digital data supplied to the program information analysis unit 4 in the digital broadcast receiving terminal device. PMT corresponding to some of the programs shown in)
Since only the (program correspondence table) is included, the operations of steps (1) to (4) are repeated only as described above, and steps (4) to (4) are performed. Without going to step (5), the digital broadcast receiving terminal device cannot decode and output the program information. Thus, a solution to the above problem was sought.

[0023]

The present invention includes at least a packet configured to include program specification information on a plurality of programs and a packet configured to include information on the contents of individual programs. A digital broadcast receiving terminal device for receiving a digital broadcast wave obtained based on a digital data bit stream obtained by multiplexing packets that have been multiplexed, wherein the digital broadcast wave is demodulated to obtain a digital data bit stream Demodulating means, means for obtaining, from the bit stream of digital data obtained by the demodulating means, program title information obtained in association with program specification information on a plurality of programs, and Input means for setting information on the result of selection of the program to be received, and information on the selected program to be received. Means for selecting only the packet that has been received and providing it to the decoder, a packet comprising program specification information on a plurality of programs, and information on the selected program to be received. Means for enabling an external recording and reproducing apparatus to output the packet and a packet comprising program specification information on a plurality of programs output from the external recording and reproducing apparatus; When a packet configured to include information of the reproduction target program by the packet configured to include the information of the selected reception target program is input, the packet includes the program specification information for the plurality of programs. The contents of the program specification information in the constituted packet are to be reproduced by the packet constituted by including the information of the selected receiving target program. A digital broadcast receiving terminal device comprising means for correcting only the program specification information for a set, and a packet including program specification information for a plurality of programs, and information of the content itself of each program. A digital broadcast receiving terminal device for receiving a digital broadcast wave obtained based on a bit stream of digital data obtained by multiplexing a packet including at least a packet configured and
Demodulating means for demodulating a received digital broadcast wave to obtain a digital data bit stream; and a digital data bit stream obtained by the demodulating means, for obtaining a program obtained in association with program specification information for a plurality of programs. Means for obtaining title information, input means for setting information of a result of selection of a program to be received performed based on the program title information, and information on the selected program to be received. Means for selecting only those packets which are present and providing the same to the decoder, a packet comprising program specification information on a plurality of programs, and information on the selected program to be received. When outputting a packet to an external recording / reproducing device, the program in the packet configured to include the program specification information for the plurality of programs described above. The contents of like information, to provide a digital broadcast receiving terminal apparatus comprising a means for outputting the corrected only in the program specification information of the packet is configured to include information of the selected received target program.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific contents of a digital broadcast receiving terminal device of the present invention will be described in detail with reference to the accompanying drawings. FIGS. 1 and 3 are block diagrams showing a configuration example of a digital broadcast receiving terminal device of the present invention. The digital broadcast receiving terminal device (STB) of the present invention illustrated in each of the above-described drawings includes:
As in the case of the conventional digital broadcast receiving terminal (STB) described with reference to FIG. 5, a packet including program specification information (PSI) for a plurality of programs and the contents of individual programs themselves And a function of receiving a digital broadcast wave obtained based on a bit stream of digital data obtained by time-division multiplexing a packet including at least a packet including the above information.
Components corresponding to those in the digital broadcast receiving terminal device of the present invention shown in FIGS. 1 and 3 are denoted by the same reference numerals as those used in FIG. .

In the digital broadcast receiving terminal STB shown in FIGS. 1 and 3, 1 is a tuner unit, 2 is a digital demodulation and error correction unit, 3 is a system control unit including a memory and a computer, 4 is a program information analysis unit, 5 is a demultiplexer, 6 is a video and audio MPEG decoder (decoder), 7 is a selection information input unit,
8 is an adder, 9 is an antenna, 10 is an output terminal, 11 is a changeover switch, 12 and 15 are digital interfaces, 16 is a recording / reproducing device capable of recording and reproducing a bit stream of digital data, and 13 in FIG.
Is a program information correction processing unit, and 14 is a changeover switch. The movable contact v1 and the movable contact v2 of the changeover switch 14 perform a switching operation in conjunction with each other. In FIG. 3, 14S is a changeover switch, 17 is an adder, and 18 is a program information rewriting unit.

The digital broadcast receiving terminal STB of the present invention shown in FIGS. 1 and 3 is the same as the conventional digital broadcast receiving terminal STB described above with reference to FIGS.
In the same manner as described above, one program desired to be received is selected for the digital broadcast wave received by the antenna 9, and the digital data of the selected one program is decoded by the decoder 6 and output from the output terminal 10. In addition to the above, a plurality of programs desired to be received can be selected from a bit stream of digital data including all of a plurality of pieces of program information output from the digital demodulation and error correction unit 2 in the digital broadcast receiving terminal device STB. And a bit stream of digital data corresponding to the selected plurality of programs.
It is configured to be able to output via an interface.

In the digital broadcast receiving terminal STB of the present invention, as described above, the viewer is selected from the bit stream of the digital data including all of the plurality of pieces of program information output from the digital demodulation and error correction unit 2. After a bit stream of digital data corresponding to a plurality of programs desired to be received and output from the digital broadcast receiving terminal STB via the digital interface is selected and recorded on the recording medium of the recording / reproducing apparatus, Inputting a bit stream of digital data reproduced by a recording / reproducing device, and selecting and decoding a specific program desired to be reproduced from the input digital data bit streams corresponding to a plurality of programs desired to be received. You can do it.

The operation mode of the digital broadcast receiving terminal STB is set by inputting operation mode information to the system control unit 3 via an input device (for example, a keyboard or a mouse) of an operation unit (not shown). It is. For example, the digital broadcast receiving terminal device STB
When the digital broadcast wave received by the antenna 9 is set to an operation mode for selecting a program desired to be received from a plurality of programs included in the digital broadcast wave, the changeover switch 14 in FIG. The movable contacts v1, v2 are switched to the fixed contacts a1, a2, and the movable contact v of the changeover switch 14S in FIG. 3 is switched to the fixed contact a.

As described above, when the digital broadcast receiving terminal device STB is set to the operation mode of selecting a desired program to be received from a plurality of programs included in the digital broadcast wave received by the antenna 9 , Changeover switch 1 in FIG.
4, the movable contacts v1, v2 are switched to the fixed contacts a1, a2, and the changeover switch 14S in FIG.
Is switched to the fixed contact a side. Then, the digital broadcast wave received by the antenna 9 is amplified and frequency-converted by the tuner unit 1, and then digitally demodulated by the digital demodulation and error correction unit 2 and the digital data bit stream is error-corrected. In the digital broadcast receiving terminal STB shown in FIG. 1, the digital broadcast receiving terminal STB is supplied to the program information analysis unit 4 and the demultiplexer 5 via the movable contact v1 and the fixed contact a1 of the changeover switch 14, and shown in FIG. The digital broadcast receiving terminal STB is supplied to the program information analyzer 4 and the demultiplexer 5 via the movable contact v and the fixed contact a of the changeover switch 14S.

The program information analysis section 4 extracts program title information obtained in association with program specification information on a plurality of programs in a bit stream of digital data after error correction. That is, in the program information analysis unit 4 described above, for example, the PMT (program correspondence table) described above is used.
Extracting the title information of a program provided in the form of character information in a transport packet configured to include, or, for example, providing the title information of the program described above in the form of character information The PID of a certain transport packet is indicated by a transport packet configured to include the above-described PMT (program correspondence table), and the PID is specified as configured to include the title information of the program. From the transport packet
For example, it extracts the title information of a program provided in the form of character information. As described above, the program title information obtained in association with the program specification information on a plurality of programs extracted by the program information analysis unit 4 is supplied via the adder 8 and the output terminal 10 to a display (not shown). To supply. The viewer looks at the title information of the program displayed on the display surface of the display, selects a program desired to be received, and selects information for enabling reception of the selected target program. When set in the input unit 7, the system control unit 3 in the digital broadcast receiving terminal device STB causes the demultiplexer 5 to output only the packet including the information of the selected reception target program. The operation of the demultiplexer 5 is controlled.

The digital data output from the demultiplexer 5 is connected to the movable contact v of the changeover switch 11.
The movable contact v of the changeover switch 11 is switched to the fixed contact a depending on the operation mode set in the digital broadcast receiving terminal STB, or is fixed. The state is switched to the contact b side. In the changeover switch 11 shown in FIG. 3, the movable contact v is switched to the fixed contact a side. In this case, the digital data output from the demultiplexer 5 is replaced with the changeover switch described above. The signal is supplied to the decoder 6 via the eleven movable contacts v and the fixed contacts a. Then, the decoder (the video and audio MPEG)
The decoder 6 performs a decoding operation on the digital data of the video information packet and the audio information packet supplied thereto, and supplies the decoded video signal and audio signal to the output terminal 10 via the adder 8. Then, the video signal and the audio signal of one specific program selected by the viewer from the plurality of programs received by the digital broadcast receiving terminal device STB are output from the output terminal 10.

Further, the movable contact v of the changeover switch 11 is set in a state where the movable contact v is switched to the fixed contact b side, like the changeover switch 11 in the broadcast receiving terminal STB shown in FIG. If so, the bit stream of digital data output from the demultiplexer 5 is supplied to the digital interface 12 via the movable contact v and the fixed contact b of the changeover switch 11 described above. The bit stream of the digital data is output from the digital interface 12 on the digital broadcast receiving terminal STB side, is given to the recording / reproducing apparatus 16 via the digital interface 15 on the recording / reproducing apparatus side, and is transmitted to the recording / reproducing apparatus 16. Is recorded on a recording medium.

As described above, when a digital data bit stream is output from the digital broadcast receiving terminal STB, the program specification information for a plurality of programs in the digital data bit stream after error correction has been performed. Relatedly, the title information of the program obtained by the program information analysis unit 4 is supplied to a display (not shown) via the adder 8 and the output terminal 10 so that the viewer can display the information on the display surface of the display. Based on the title information of the received program, select a plurality of programs that you want to receive,
Information for enabling reception of the selected plurality of reception target programs is set in the selection information input unit 7, and the system control unit 3 in the digital broadcast receiving terminal STB is set.
By controlling the operation of the demultiplexer 5 so that only each packet including information on the selected plurality of reception target programs is output from the demultiplexer 5, Output a bit stream of digital data corresponding to the program desired to be received,
It can be recorded and reproduced by a recording and reproducing device.

As a recording / reproducing apparatus for recording a bit stream of digital data output from the digital broadcast receiving terminal STB as described above, for example, the above-described VCR of the D-VHS system may be used. it can. In the above-described D-VHS VCR, a marginal area 19, a preamble area and a preamble area are provided on one recording mark (track) formed on the magnetic tape in accordance with the rotation of the rotary magnetic head by 180 degrees as shown in FIG. 20, a subcode area 21, a postamble area 22, an IBG area 23,
Digital data is recorded in a recording format in which a preamble area 24, a main data area 25, a postamble area 26, and a margin area 27 are sequentially arranged.

The main data area 25 is composed of 336 sync blocks with sync block (synchronous block) numbers from 0 to 335 in total by the data area and the error correction code area. Main data area 2
In 5, the data area is set to 306 sync blocks (multiple of 6), and the error correction code area is 30 sync blocks in which an outer code (C3 code) for error correction is recorded. FIG. 14 shows an example format of the sync block in the main data area. In FIG. 14, reference numeral 28 denotes a 2-byte synchronization information (Sync) area for reproducing a sync block; 29, a 3-byte address information (ID) area;
Is the actual data storage area of 99 bytes including the header,
Reference numeral 31 denotes an 8-byte parity area for error correction of sync block information, and the sync block is composed of 112 bytes. The 3-byte address information (ID) area 29 is composed of a 2-byte ID (336 sync block identification information and identification information for distinguishing six recording traces) and a 1-byte parity. ing.

The digital broadcast receiving terminal ST
As described above, the digital broadcast wave received by B is variously compressed by the MPEM2 encoder at a high efficiency to convert various programs into transport packets (TP) each having a data amount of 188 bytes. A transport stream (TS) in which port packets are time-division multiplexed is composed of sequential transport packets TP, TP... Having various PIDs on the time axis as shown in FIG. Similarly, FIG. 16A is a diagram in which the sequential transport packets TP, TP arranged on the time axis include different program information. Are displayed using different patterns.

FIG. 16 (b) shows the above-mentioned FIG. 16 (a).
Indicate that the transport packets TP, TP... Relating to one specific program are selected and extracted from the transport packets TP, TP. 16 (c) and (e) are reference clock signals for time measurement, and FIG. 16 (d) relates to the specific program shown in FIG. 16 (b). With the arrival time information (time stamp) attached to the header provided for each of the transport packets TP, TP,..., The time of the transport packets TP, TP. The arrangement on the axis is shown.

FIG. 16F shows transport packets TP, TP relating to a specific program reproduced from the recording medium in an arrangement state on the time axis as shown in FIG. 16D. .. On the time axis are indicated by a reference clock signal for time measurement shown in FIG. 16 (e) and arrival time information (time stamp) in the header provided in the transport packets TP, TP. Indicate that the transport packet TP has been recovered to the original time position. FIG. 16 above
In the following, a case will be described in which transport packets TP, TP... Relating to a certain specific program are selected and extracted from transport packets TP, TP. As shown, transport packets TP, TP... Relating to a plurality of specific programs are selected and extracted from transport packets TP, TP. Needless to say, it can be easily realized.

The main data in FIG. 13 showing the recording format in one recording mark (track) formed on the magnetic tape in correspondence with the rotation of the rotary magnetic head by 180 degrees in the D-VHS VCR described above. In the area 25,
As described above with reference to FIG. 14, there are 306 sync blocks in the main data area each consisting of 112 bytes. Since one transport packet TP is 188 bytes as described above, D-VH
In the S system VCR, as shown in FIG. 15, two consecutive sync blocks in the main data area are used to correspond to one transport packet TP.

In FIG. 15, reference numerals 28, 29, 31
Etc. are the reference numerals 28, 29, 3 used in FIG.
It corresponds to 1 mag. In the two consecutive sync blocks shown in FIG. 15, the upper sync block is a 2-byte header (main) in the 99-byte data area 30 (see FIG. 14). Header), a 1-byte area (main packet area), and a 4-byte packet header or the like, with 7 bytes used, leaving 92 bytes for the rest. The lower sync block in FIG. 15 has a 2-byte header (main header) and a 1-byte area (main packet area) in the data area 30 of 99 bytes. And the remaining is 96 bytes because 3 bytes are used by. Therefore, in FIG. 15, the area in which the net pattern is given in the figure is 188 bytes, which is the sum of 92 bytes and 96 bytes, and
One transport packet TP can be arranged in an 8-byte area.

Digital broadcast receiving terminal ST shown in FIG.
B selects one program desired to be received for the digital broadcast wave received by the antenna 9, decodes the digital data of the selected one program by the decoder 6, and outputs the digital data from the output terminal 10. When performing such operations,
A digital data bit stream corresponding to a plurality of programs desired to be received is selected for a digital broadcast wave received by the antenna 9, and a bit stream of digital data corresponding to the selected plurality of programs is digitally converted. When performing an operation of outputting via the interface, two movable contacts v of the changeover switch 14
1 and v2 are switched to the fixed contacts a1 and a2, and the input and output of the program information correction processing unit 13 are short-circuited by the movable contact v2 of the changeover switch 14 and the fixed contact a2. Thus, the program information correction processing unit 13 is brought into a non-operating state, and the output of the program information analysis unit 4 is directly supplied to the system control unit 3.

Therefore, when the digital broadcast receiving terminal STB shown in FIG. 1 is operating in the operation mode as described above, a plurality of programs included in the received digital broadcast wave are The demultiplexer 5 extracts a transport packet (TP) including the program specification information and a transport packet including the information of the target program selected by the viewer. Then, the data is supplied to the decoder 6 or output via the digital interface 12. Here, a transport packet output from the digital demodulation and error correction unit 2 in the digital broadcast receiving terminal device STB and including program specification information on a plurality of programs, and contents of individual programs It is assumed that a bit stream of digital data including a transport packet including its own information is, for example, the one shown in FIG.
The case where only two of the programs # 1 and # 2 are selected among the three programs will be described with reference to FIG.

Assuming that the bit stream of the digital data output from the digital demodulation and error correction unit 2 of the digital broadcast receiving terminal STB is, for example, the one shown in FIG. The PAT output via the interface 12 and recorded on the recording medium by the recording / reproducing device 16 via the digital interface 15 includes programs # 1 to # 3 as illustrated in FIG. PA with content about
PAT with the same contents as T, ie, the original PAT
Programs # 1 to # shown in FIG.
3 having the same content as the PAT having the content related to 3,
The PAT is as shown in FIG.

By the way, a PAT having contents related to programs # 1 to # 3 as shown in FIG.
The digital data bit stream reproduced from the recording medium on which the digital data bit stream containing the digital data bit stream is recorded is supplied to the program information analysis unit 4 in the conventional digital broadcast receiving terminal STB as described with reference to FIG. In the case, the conventional digital broadcast receiving terminal ST
In order for B to perform a normal operation in accordance with the flowchart shown in FIG. 6, the recording medium of FIG. 8 corresponds to the contents of the PAT shown in FIG. As shown in (c), the above programs # 1 to # 1
As described above, a transport packet having a PID of 05, 07, 09 must be recorded in correspondence with # 3.

However, even if the recording medium stores a digital data bit stream including a PAT having contents related to programs # 1 to # 3 as shown in FIG. In the case where only two programs # 1 and # 2 of the programs # 1 to # 3 are selected by the viewer as in the example of FIG. , PMT (program correspondence table) is a transport packet in which a PMT corresponding to programs # 1 and # 2 selected by the viewer is present, that is, in the example, As shown in FIG. 8D, only a transport packet having a PID of 05,07 is recorded as shown in FIG. Transport packet PMT for the program # 3 it is in a PAT correspond exists, i.e., in the illustrative examples PI
A transport packet in which D is 09 is not recorded.

As described above, the PMT corresponding to the program contained in the PAT recorded on the recording medium
When the bit stream of the digital data in which the transport packet in which the data packet exists is not recorded is supplied to the program information analyzing unit 4 in the conventional digital broadcast receiving terminal STB described above with reference to FIG. In
Step (1) in the flowchart shown in FIG.
Since the operations of (4) to (4) are only repeated and the process does not proceed from step (4) to step (5),
As described above, the conventional digital broadcast receiving terminal device cannot decode and output the program information, but the digital broadcast receiving terminal device S of the present invention shown in FIG.
In the TB, when the bit stream of digital data input via the digital interface 12 operates in an operation mode in which the bit stream is supplied to the program information analysis unit 4, the contents of the PAT are changed by the program information correction processing unit 13. Since the correction is performed [in the above example, the PAT is corrected to the content as shown in FIG. 8E], the viewer normally operates according to the flowchart shown in FIG. Can decode and output the selected program information.

Now, the digital broadcast receiving terminal STB of the present invention shown in FIG.
When the operation mode is set such that a bit stream of digital data input through the digital interface 12 is supplied, the movable contacts v1 and v2 of the changeover switch 14 are controlled by a control signal from the system control unit 3.
The switches are switched to the fixed contacts b1 and b2, and the movable contact v of the changeover switch 11 is switched to the fixed contact a. The bit stream of the digital data reproduced from the recording / reproducing device 16 is transmitted from the digital interface 15 on the recording / reproducing device 16 side to the digital interface 12 on the digital broadcast receiving terminal STB side via the fixed contact b1 of the changeover switch 14 described above. Given to.

The bit stream of the digital data reproduced from the recording / reproducing device 16 is transmitted from the movable contact v1 of the changeover switch 14 in the state of being switched to the fixed contact b1 side of the changeover switch 14, from the program information analyzer 4 And the demultiplexer 5. The program information analysis unit 4 obtains, from PAT (program information), program specification information on a plurality of programs in a bit stream of digital data supplied thereto, as in step (1) in the flowchart of FIG. Proceeding to step (2), the existence of a PMT (program correspondence table) corresponding to all the programs indicated as the contents of the PAT is confirmed, and the contents of the PAT are indicated as the contents of the PAT in step (3). PM for all programs
If it is confirmed that the T (program correspondence table) exists (YES), the process proceeds to step 4, and the PMT (program) corresponding to the program indicated as the content of the PAT in step (3) above. If any of the correspondence tables is not confirmed (NO), the process proceeds to step S5.

In step 5, it is determined that there is no program corresponding to the PMT whose existence has not been confirmed, and the process proceeds to step (6). In the above step (6), the program information analysis unit 4 confirms the presence of the contents of the PAT (program information) of the program specification information on a plurality of programs in the bit stream of the digital data reproduced from the recording / reproducing device 16. The program information correction processing unit 13 corrects the PAT having the contents of only the program corresponding to the PMT (program correspondence table), and proceeds to step (4). In step (4), the program title information is supplied to the display to display the program title, and the process proceeds to step (7). In step (7), the viewer sees and receives the program title displayed on the display. Is selected, and the program selection information desired to be received is set in the input section. Step (8)
In the system control unit, the packet which includes the information of the program desired to be received is specified, and the demultiplexer only decodes the packet including the information of the program desired to be received. To be supplied. In step (9), the digital data of the program desired to be received is decoded and a reproduced signal is output.

That is, the digital broadcast receiving terminal device STB of the present invention shown in FIG.
When operating in an operation mode in which a bit stream of digital data input through the digital interface 12 is supplied, the analysis result of the program information in the program information analysis unit 4 is shown as the contents of the PAT. PMT (program correspondence table) corresponding to the program
If any of the PATs are not confirmed, the PAT (program information) of the program specification information for a plurality of programs in the bit stream of the input digital data is used by the program information analysis unit 4 to determine the existence. Confirmed P
The program information correction processing unit 13 corrects the PAT having only the program corresponding to the MT (program correspondence table) by the program information correction processing unit 13 so that the operation can be continued. 8B showing the PAT (program information) of the program specification information for a plurality of programs in the bit stream of the input digital data, for example, is shown in the example described above. This is changed to PAT (program information) having the contents shown in FIG.

Then, program title information obtained in association with program specification information on a plurality of programs in the digital data bit stream is supplied to a display (not shown) via the adder 8 and the output terminal 10. You. The viewer looks at the title information of the program displayed on the display surface of the display, selects a program desired to be received, and selects information for enabling reception of the selected target program. When set in the input unit 7, the system control unit 3 in the digital broadcast receiving terminal device STB causes the demultiplexer 5 to output only the packet including the information of the selected reception target program. The operation of the demultiplexer 5 is controlled. The digital data output from the demultiplexer 5 is supplied to a decoder 6 via a movable contact v and a fixed contact a of a changeover switch 11, and the decoder (video and audio MPEG decoder) 6 A decoding operation is performed on the supplied digital data of the video information packet and the audio information packet, and the decoded video signal and audio signal are output through an adder 8 to an output terminal 10.
Will be output.

In the digital broadcast receiving terminal device STB described so far with reference to FIGS. 1 and 8, the digital broadcast wave received by the antenna 9 is targeted for one program to be received. When an operation is performed such that a selection is made and digital data of the selected one program is decoded by the decoder 6 and output from the output terminal 10, or a digital broadcast wave received by the antenna 9 is received. When performing an operation of selecting a bit stream of digital data corresponding to a plurality of programs and outputting a bit stream of digital data corresponding to the selected plurality of programs via a digital interface, , PAT (program guide) are left as they are, and the program information analysis unit 4 of the digital broadcast receiving terminal STB is provided with a When the operation mode is such that the bit stream of the digital data input through the digital interface 12 is supplied, the program corresponding to the bit stream of the digital data input to the program information analysis unit 4 through the digital interface 12 is set. The analysis result of the program information in the information analysis unit 4 is a PMT corresponding to the program indicated as the contents of the PAT.
When the existence of any of the (program correspondence tables) is not confirmed, the PAT of the program specification information on a plurality of programs in the bit stream of the input digital data
The program information correction processing unit 13 corrects the contents of (program information) to a PAT having only the program corresponding to the PMT (program correspondence table) whose existence has been confirmed by the program information analysis unit 4, and The digital broadcast receiving terminal device STB shown in FIG. 3 selects one program desired to be received with respect to the digital broadcast wave received by the antenna 9. In the case where the digital data of the selected one program is decoded by the decoder 6 and output from the output terminal 10, a plurality of digital broadcast waves received by the antenna 9 are to be received. A bit stream of digital data corresponding to a program is selected, and a bit stream of digital data corresponding to the plurality of selected programs is digitally converted. When performing an operation of outputting through the interface, the analysis result of the program information in the program information analysis unit 4 is not confirmed in the PMT corresponding to the program indicated as the content of the PAT. If there is one, the contents of the PAT (program information) of the program specification information for a plurality of programs in the bit stream of the input digital data are read by the PMT (program The digital broadcast receiving terminal device STB of the present invention has a configuration in which the contents of the PAT are rewritten by the program information rewriting processing section 18 so that the PAT has the contents only for the program corresponding to Table). .

The digital broadcast receiving terminal device STB of the present invention shown in FIG. 3 selects one program desired to be received with respect to the digital broadcast wave received by the antenna 9, and selects the selected one program. A bit stream of digital data corresponding to a plurality of programs desired to be received in a case where an operation of decoding digital data by the decoder 6 and outputting the decoded data from the output terminal 10 is performed; Is selected, and an operation of outputting a bit stream of digital data corresponding to the plurality of selected programs through a digital interface is performed, the movable contact v of the changeover switch 14S is set to the fixed contact a side. And a bit stream of digital data input through the digital interface 12. When performing operations as to be supplied to the program information analyzing section 2 and the demultiplexer 5, the movable contact v of the changeover switch 14S is changed over to the fixed contact b.

The program information analyzer 4 to which the bit stream of digital data is supplied from the movable contact v of the changeover switch 14S, as an analysis result of the program information,
If any of the PMTs corresponding to the program indicated as the contents of the PAT is not confirmed, the PAT (PAT) of the program specification information for a plurality of programs in the bit stream of the input digital data is used. The contents of the PAT are rewritten by the program information rewriting processing unit 18 so that the contents of the PAT (program information) are changed to a PAT having only the program corresponding to the PMT (program correspondence table) whose existence is confirmed by the program information analysis unit 4 Rewrite.

The above point will be described with a specific example.
FIG. 9A shows a PAT (program table) extracted from a bit stream of digital data output from the movable contact v of the changeover switch 14S in the digital broadcast receiving terminal STB of FIG. Is a PAT having contents related to the programs # 1 to # 3, but only two programs # 1 and # 2 among the programs # 1 to # 3 are selected by the viewer. , PMT (program correspondence table) exists, as shown in FIG. 9C, the program # 1, # 2 selected by the viewer.
In the case of only the PMT corresponding to the PAT, the program information rewriting processing unit 18 rewrites the contents of the PAT as shown in FIG.

FIG. 4 is a flow chart for explaining the above-mentioned operation in the digital broadcast receiving terminal STB of FIG. 3, wherein the digital data bit stream is transmitted from the movable contact v of the changeover switch 14S to the program information analysis section. 4 and the demultiplexer 5, the program information analysis unit 4 performs the processing for a plurality of programs in the bit stream of the digital data supplied thereto, as in step (1) in the flowchart of FIG. The program specification information is obtained from the PAT (program information), and the process proceeds to step (2). In step (2), the PMT (program correspondence table) corresponding to all the programs indicated as the contents of the PAT is obtained. It is determined whether only a specific program is to be recorded by checking whether or not the program exists, and if YES, the step ( Proceed to) PAT, as recorded, such as PMT is performed, also the step described above (2)
If the determination in step (3) is NO, the process proceeds to step (4) to rewrite the contents of the PAT, and then proceeds to step (3) to set PAT.
Recording such as AT and PMT is performed.

As described above, in the digital broadcast receiving terminal device STB of the present invention shown in FIG. 3, the analysis result of the program information in the program information analysis unit 4 indicates that the PMT (PMT) corresponding to the program indicated as the contents of the PAT. If any of the program correspondence tables is not confirmed, the contents of the PAT (program information) of the program specification information for a plurality of programs in the bit stream of the input digital data are converted to a program information analysis unit. PMT confirmed to exist by 4
Since the program information rewriting processing section 18 rewrites the PAT having only the program corresponding to the (program correspondence table) with the program information rewriting processing section 18, the PAT is associated with the program specification information about a plurality of programs in the digital data bit stream. The obtained program title information is supplied to a display (not shown) via the adder 8 and the output terminal 10, and the viewer looks at the program title information displayed on the display surface of the display. When a program desired to be received is selected and information for enabling the reception of the selected program to be received is set in the selection information input unit 7, the system control unit 3 in the digital broadcast receiving terminal STB performs The demultiplexer 5 outputs only the packet including the information on the selected program to be received. By controlling the operation of the multiplexer 5, the digital data output from the demultiplexer 5 is supplied to the decoder 6 via the movable contact v and the fixed contact a of the changeover switch 11, and the decoder (video and video) The audio MPEG decoder 6 performs a decoding operation on the digital data of the video information packet and the audio information packet supplied thereto, and outputs the decoded video signal and audio signal via an adder 8 to an output terminal. 10
Will be output.

[0058]

As is apparent from the above description, the digital broadcast receiving terminal device of the present invention is intended to receive a digital broadcast wave received by an antenna,
One program can be selected, the digital data of the selected one program can be decoded by a decoder and output from an output terminal, and the digital data output from a digital demodulation and error correction unit in a digital broadcast receiving terminal device can be output. A bit stream of digital data corresponding to a plurality of programs desired to be received is selected from a bit stream of digital data including all of the plurality of pieces of program information, and the digital data corresponding to the plurality of selected programs is selected. Of the digital data including all of the plurality of pieces of program information output from the digital demodulation and error correction unit. Select digital broadcast receiving terminal device via digital interface A bit stream of digital data corresponding to a plurality of programs desired to be received and output is once recorded on a recording medium of the recording / reproducing apparatus, and then a bit stream of digital data reproduced by the recording / reproducing apparatus is input. In order to facilitate the selection and decoding of a specific program desired to be reproduced from a bit stream of digital data corresponding to a plurality of input desired programs to be received, program information in a program information analysis unit If the analysis result of PMT (program correspondence table) corresponding to the program indicated as the content of the PAT is not confirmed to exist, a plurality of PMTs in the bit stream of the input digital data are determined. The contents of the PAT (program table) of the program specification information for the program
The PAT, whose existence has been confirmed by the program information analysis unit, is modified or rewritten into a PAT having only the contents of a program corresponding to the PMT. Solvable.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic configuration of a digital broadcast receiving terminal device of the present invention.

FIG. 2 is a flowchart used to explain the operation of the digital broadcast receiving terminal device shown in FIG.

FIG. 3 is a block diagram showing a schematic configuration of a digital broadcast receiving terminal device of the present invention.

FIG. 4 is a flowchart used to explain the operation of the digital broadcast receiving terminal device shown in FIG. 3;

FIG. 5 is a block diagram showing a schematic configuration of a conventional digital broadcast receiving terminal device.

FIG. 6 is a flowchart used to describe the operation of the conventional digital broadcast receiving terminal device shown in FIG.

FIG. 7 is a diagram for explaining the operation of the digital broadcast receiving terminal device.

FIG. 8 is a diagram for explaining the operation of the digital broadcast receiving terminal device.

FIG. 9 is a diagram for explaining the operation of the digital broadcast receiving terminal device.

FIG. 10 is a diagram illustrating a configuration example of digital data.

FIG. 11 is a diagram illustrating a configuration example of digital data.

FIG. 12 is a diagram illustrating a configuration example of digital data.

FIG. 13 is a diagram illustrating a configuration example of digital data.

FIG. 14 is a diagram illustrating a configuration example of digital data.

FIG. 15 is a diagram illustrating a configuration example of digital data.

FIG. 16 is a diagram for explaining the operation of the digital broadcast receiving terminal device.

[Explanation of symbols]

1. Tuner section 2. Digital demodulation and error correction section 3.
... A system control unit including a memory and a computer, 4 ... Program information analysis unit, 5 ... Demultiplexer, 6 ... Video and audio MPEG decoder (decoder), 7 ... Selection information input unit, 8 ... Addition Device, 9 antenna, 10 output terminal, 11 changeover switch, 12, 15
... Digital interface, 13 ... Program information correction processing unit, 14, 14S ... Switch, 16 ... Recording / reproducing device capable of recording and reproducing bit stream of digital data, 17 ... Adder, 18 ... Program information rewriting processing unit,

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04N 5/76-5/956 H04N 5/44-5/46 H04N ^7/ 08-7/088

Claims (2)

(57) [Claims] 1. Multiplexing a packet including at least a packet including program specification information on a plurality of programs and a packet including information on the contents of individual programs themselves. A digital broadcast receiving terminal device for receiving a digital broadcast wave obtained based on a digital data bit stream, comprising: demodulation means for demodulating the received digital broadcast wave to obtain a digital data bit stream; Means for obtaining, from the bit stream of digital data obtained by the means, program title information obtained in relation to program specification information for a plurality of programs; and Input means for setting the information of the selection result, and selecting only the packet including the information of the selected reception target program. Means for providing the data to a decoder, a packet comprising program specification information on a plurality of programs, and a packet comprising information on the selected program to be received. Means for enabling output to a recording / reproducing apparatus, a packet comprising program specification information on a plurality of programs output from an external recording / reproducing apparatus, When a packet including information on a program to be reproduced by a packet including information on a program is input, a packet including program specification information on the plurality of programs is input. The contents of the program specification information in the program specification information of the program to be reproduced by the packet including the information of the selected reception target program. Digital broadcast receiving terminal apparatus comprising a means for modification only. 2. A packet multiplexing a packet including at least a packet including program specification information on a plurality of programs and a packet including information on the contents of individual programs themselves. A digital broadcast receiving terminal device for receiving a digital broadcast wave obtained based on a digital data bit stream, comprising: demodulation means for demodulating the received digital broadcast wave to obtain a digital data bit stream; Means for obtaining, from the bit stream of digital data obtained by the means, program title information obtained in relation to program specification information for a plurality of programs; and Input means for setting the information of the selection result, and selecting only the packet including the information of the selected reception target program. Means for providing the data to a decoder, a packet comprising program specification information on a plurality of programs, and a packet comprising information on the selected program to be received. When output to the recording / playback apparatus, the contents of the program specification information in the packet configured to include the program specification information for the plurality of programs are configured to include the information of the selected reception target program. Means for correcting and outputting only the program specification information of the packet in question.