JP3369097B2 - Digital broadcast multi-program recording / reproducing method and recording / reproducing system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital broadcast multi-program recording / reproducing method and a digital broadcast multi-program recording / reproducing system.

[0002]

2. Description of the Related Art In digital communication satellite broadcasting, digital data of a plurality of highly compressed programs are time-division-multiplexed into digital broadcasting waves and broadcast via satellite broadcasting. It has been put to practical use in the country, and various technical studies are being conducted toward practical use in Japan.

The MPEG2 system used for the digital communication satellite broadcasting service already performed in the United States will be adopted for the digital communication satellite broadcasting service in Japan. In the MPEG2 system, the digital broadcast data uses a transport packet (TP) having a data amount of 188 bytes as a transmission unit, and a time-division multiplexed TP is a transport packet.
It is a stream (TS). This TS is transmitted in parallel by the number of transponders (satellite repeaters). Data of a plurality of programs is multiplexed in each TS, and the user selects and views any program of any transponder. In the MPEG2 system, in order to facilitate the selecting operation, program specification information (Program Specific In) for a plurality of programs is included in the digital broadcast data as data ancillary information.
The TP including the formation (PSI) is provided.

An example of the structure of the TS is shown in FIG. Video data, sound data and PCR (Program Clock Ref) of four programs (programs)
program; a program association table (PAT) and a program map table (P).
TP corresponding to MT) etc. is time-division multiplexed. The number attached to the upper part of each TP in FIG. 12A is a packet identifier (PID) for specifying what the packet means. PAT is data of TP with a PID of 00, and
As shown in (b), it shows all the programs (programs) included in the TS, and here, data of four programs of program # 1, program # 2, program # 3, and program # 4. Shall be included. Further, the PAT is a program map table that identifies which TPs of the PMTs of the four programs in the TS of FIG.
It has a packet identifier (PMT-PID) as data. For example, the PMT-PID of program # 1 is 0
It is 3 and so on. As shown in FIGS. 12 (c) to 12 (f), the PMT has video data, sound data, and PCR of each program in the TS of FIG. 12 (a).
PI for identifying which packet is included
It is a list of D. For example, FIG. 12C is a list of the program # 1, in which the PID of the TP of the video data is 11, the PID of the TP of the sound data is 12, and the PCR.
The TP has a PID of 13.

When there are a plurality of transponders when specifying a program to be viewed by the user, first, one transponder is specified and the PA in the TS corresponding thereto is specified.
The program information in the TS is displayed based on T, and the user identifies the program by viewing it. When recording digital broadcast data on a recording medium,
That is, since the structure of the TS can be recorded as it is, it is possible to select and view one from a plurality of programs in the TS during reproduction.

As a system for recording / reproducing such a multi-program, which is multiplexed digital broadcasting data, on a recording medium, the following system is considered.

FIG. 13 is a block diagram showing the structure of such a conventional digital broadcast multi-program recording / reproducing system.

This system comprises a receiving device 1, a recording / reproducing device 2, a display 3 and an antenna 4.

The receiving device 1 receives a radio wave from a communication satellite via an antenna 4 and converts it into a signal for the receiving device 1 inside, and a tuner / demodulation / error correction unit 5 and an accompanying digital broadcast data. DI / I for transmitting the data between the recording / reproducing apparatus 2 and the program information analysis unit 6 which analyzes the transmitted data additional information and creates the title information of the program included in the digital broadcast data. F (digital interface) 7, demultiplexer 8 for separating multiplexed digital broadcast data, and display 3
A system control unit 9 for controlling data to be displayed on
Decoder 10 for decoding the high-efficiency coding processing applied to the digital broadcast data and outputting the decoded data to the display 3.
And a program selection input unit 11 into which a program to be displayed on the display 3 is input by the user, and a switch 12 for switching between recording and reproduction. Recording / playback device 2
Is a D-I / F 13 for transmitting data with the receiving device 1.
And a recording / reproducing unit 14 for recording and reproducing digital broadcast data on a recording medium (not shown).

First, the operation of the present system when viewing digital broadcast data while receiving it will be described.

The tuner / demodulation / error correction unit 5 receives the digital broadcast wave from the transponder of the communication satellite via the antenna 4, amplifies the digital broadcast wave,
After frequency conversion, the signal waveform is shaped and demodulated, the error of the signal is corrected, and output as digital broadcast data used in the receiving apparatus 1. At this time, the switch 12 is
As shown in FIG. 13, it is switched to the contact a side. The output digital broadcast data is sent to the demultiplexer 8 and the program information analysis unit 6 via the switch 12.

The program information analysis unit 6 uses the PAT in the sent digital broadcast data to create title information of the program included in the digital broadcast data.
The system control unit 9 causes the display 3 to display the title information via the demultiplexer 8 and the decoder 10. The user looks at this title information, specifies the program to be viewed, and specifies the specified program by the program selection input unit 11.

When a program to be watched is designated, the system control section 9 instructs the demultiplexer 8 to output individual data streams (data, data, etc.) such as video data and audio data corresponding to the program designated from the TS of the digital broadcast data. The columns are separated and output to the decoder 10. The decoder 10 is
These data streams are decoded and output to the display 3, a speaker (not shown) or the like.

Next, the operation of this system when recording digital broadcast data on a recording medium will be described.

Digital broadcasting data is sent from the tuner / demodulation / error correction unit 5 to the program information analysis unit 6 via the switch 12 in the same manner as when viewing while receiving. At this time, the switch 12 is switched to the contact a side as shown in FIG. 13, as in the case of viewing while receiving. When the digital broadcast data is recorded as it is, the digital broadcast data passes through the program information analysis unit 6 and is sent to the recording / reproducing apparatus 2 via the D-I / F 7. When a part of the digital broadcast data is rewritten or added, for example, when a user's personal memo is added and recorded, the digital broadcast data is recorded from the program information analysis unit 6 to the system control unit 9 Sent to D, where data is rewritten and added, and then D
-Sent to the recording / reproducing apparatus 2 via the I / F 7.

In the recording / reproducing apparatus 2, the recording / reproducing unit 14
Receives the digital broadcast data via the D-I / F 13 and records it on a recording medium (not shown).

It is also possible to record on a recording medium in parallel with viewing while receiving.

Next, the operation of this system when reproducing digital broadcast data from a recording medium will be described.

The recording / reproducing unit 14 is a recording medium (not shown).
The digital broadcast data recorded on the
This is sent to the receiving device 1 through F13.

In the receiver 1, the switch 12 is switched to the contact b side. Therefore, the digital broadcasting data sent from the recording / reproducing apparatus 2 is D-I.
It is sent to the demultiplexer 8 and the program information analysis unit 6 via the / F7 and the switch 12.

When the user specifies again the program he / she wants to watch at the time of reproduction, the program information analysis unit 6 uses the PAT in the sent digital broadcast data to title the program included in the digital broadcast data. The information is created, and the system control unit 9 causes the display 3 to display the title information via the demultiplexer 8 and the decoder 10. The user looks at the title information, specifies the program to be viewed, and selects the program. The program specified by the input unit 11 is designated. Then, the system control unit 9 separates into the demultiplexer 8 each individual data stream (data string) of video data, audio data, etc. corresponding to the designated program from the TS of the digital broadcast data, and the decoder 1
Output to 0. The decoder 10 decodes these data streams and outputs them to the display 3, a speaker (not shown) and the like.

When the user does not specify again the program he / she wants to watch at the time of reproduction, the system control section 9 automatically specifies the program to be displayed on the display by using the data attached information in the digital broadcast data. There are various possible data auxiliary information to be used.
It is possible to identify the program corresponding to the PMT-PID initially set in the PAT. As the operation in this case, the system control unit 9 specifies the program to be displayed according to the above method from the PAT sent via the program information analysis unit 6, and specifies the demultiplexer 8 from the TS of the digital broadcast data. Each individual data stream (data string) of video data, audio data, etc. corresponding to the selected program is separated and output to the decoder 10. The decoder 10 decodes these data streams and outputs them to the display 3, a speaker (not shown) and the like.

[0023]

In the conventional multi-program recording / reproducing system for digital broadcasting data, when the user does not specify again the program he / she wants to watch at the time of reproduction,
In the above-described method of identifying the displayed program, the program that the user expects to be displayed is not always displayed.

For example, when the data streams of the sumo, tennis, baseball and soccer programs are time-division multiplexed in the TS, the user records the digital broadcast data on the recording medium with the intention of watching the soccer program. However, the sumo program initially set on the PAT is displayed on the display first. In this case, it takes time and effort to display a program selection screen and then select a soccer program before the soccer program is displayed. Further, if the user has little knowledge of the multi-program recording system, there is a risk of misunderstanding that the soccer program desired to be watched by the user is not recorded at the position on the recording medium.

In consideration of the above-described problems of the conventional multi-program recording / reproducing system for digital broadcasting, the present invention can specify at least the first program to be displayed when the recorded multi-program is reproduced. It is an object of the present invention to provide a multi-program recording / reproducing method and a recording / reproducing system.

[0026]

In order to solve the above-mentioned problems, the present invention according to claim 1 is a program to be displayed at least at the beginning of reproduction when recording multiplexed digital broadcast data in a recording medium. Is recorded with the digital broadcast data or in a part of the data attached information in the digital broadcast data, and at the time of reproduction, the program to be displayed is determined according to the display program information. A multi-program recording / reproducing method of digital broadcasting characterized by the above.

According to the present invention of claim 3, among the programs included in the multiplexed digital broadcast data, a display program for creating display program information for specifying at least the first program to be displayed at the time of reproduction. An information creating unit, a recording / reproducing unit for recording / reproducing the digital broadcast data on / from a recording medium, and a display control unit for determining to display the specified program according to the display program information at the time of reproduction, The display program information is recorded in the recording medium together with the digital broadcast data or as a part of data ancillary information in the digital broadcast data.

[0028]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) A first embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the structure of a digital broadcast multi-program recording / reproducing system according to the first embodiment of the present invention. For the sake of convenience, the reference numerals in the figure are the same as those in the conventional example of FIG.

The digital broadcast multi-program recording / reproducing system in the present embodiment comprises a receiving device 1, a recording / reproducing device 2, a display 3 and an antenna 4.

The receiving device 1 receives a radio wave from a communication satellite via the antenna 4 and converts it into a signal for the receiving device 1 inside. DI / I for transmitting the data between the recording / reproducing apparatus 2 and the program information analysis unit 6 which analyzes the transmitted data additional information and creates the title information of the program included in the digital broadcast data. F (digital interface) 7, demultiplexer 8 for separating multiplexed digital broadcast data, and display 3
A system control unit 9 for controlling data to be displayed on
Decoder 10 for decoding the high-efficiency coding processing applied to the digital broadcast data and outputting the decoded data to the display 3.
And a program selection input unit 11 into which a program to be displayed on the display 3 is input by the user, and a switch 12 for switching between recording and reproduction. Recording / playback device 2
Is a D-I / F 13 for transmitting data with the receiving device 1.
And a recording / reproducing unit 14 for recording and reproducing digital broadcast data on a recording medium (not shown), and a recording / reproducing control unit 15 for controlling which recording region of the recording medium is to be recorded. ing.

Here, the program information analysis unit 6 has the function of the program information analysis unit of the present invention, the system control unit 9 has the functions of the display program information creation unit and the display control unit of the present invention, and the program selection input unit 11 The function of the program selection input means of the present invention,
The recording / reproducing section 14 has the function of the recording / reproducing means of the present invention, and the recording / reproducing control section 15 has the function of the recording controlling means of the present invention.

Next, the operation of this embodiment will be described.

First, the operation of the digital broadcast multi-program recording / reproducing system according to the present embodiment when viewing digital broadcast data while receiving it will be described.

The tuner / demodulation / error correction unit 5 receives the digital broadcast wave from the transponder of the communication satellite via the antenna 4, amplifies the digital broadcast wave,
After frequency conversion, the signal waveform is shaped and demodulated, the error of the signal is corrected, and output as digital broadcast data used in the receiving apparatus 1. At this time, the switch 12 is
As shown in FIG. 1, it is switched to the contact a side. The output digital broadcast data is transmitted via the switch 12
It is sent to the demultiplexer 8 and the program information analysis unit 6.

The program information analysis unit 6 uses the PAT in the sent digital broadcast data to create the title information of the program included in the digital broadcast data.
The system control unit 9 causes the display 3 to display the title information via the demultiplexer 8 and the decoder 10. The user looks at this title information, specifies the program to be viewed, and specifies the specified program by the program selection input unit 11.

When the program to be viewed is designated, the system control unit 9 instructs the demultiplexer 8 to provide individual data streams (data, such as video data and audio data corresponding to the program designated from the TS of the digital broadcast data). The columns are separated and output to the decoder 10. The decoder 10 is
These data streams are decoded and output to the display 3, a speaker (not shown) or the like.

Next, the operation of the digital broadcast multi-program recording / reproducing system according to the present embodiment when the digital broadcast data is recorded on the recording medium will be described.

Digital broadcasting data is sent from the tuner / demodulation / error correction unit 5 to the program information analysis unit 6 via the switch 12 in the same manner as when viewing while receiving. At this time, as in the case of viewing while receiving, the switch 12 is switched to the contact a side as shown in FIG. The program information analysis unit 6 uses the PAT in the sent digital broadcast data to create title information of the program included in the digital broadcast data. The system control unit 9 causes the display 3 to display the title information via the demultiplexer 8 and the decoder 10.
The user looks at the title information, specifies the program to be displayed first at the time of reproduction, and specifies the specified program by the program selection input unit 11. The digital broadcast data is sent from the program information analysis unit 6 to the recording / playback apparatus 2 via the D-I / F 7. Further, the display program information representing the designated program is created in the system control unit 9 by the output from the program selection input unit 11, and is generated via the D-I / F 7.
It is sent to the recording / reproducing apparatus 2. Here, the display program information is
It is sent to the recording / reproducing apparatus 2 as a command. An example of this command is shown in FIG. The command of FIG. 2 not only specifies the program whose display program information is to be displayed first, but also specifies the second and subsequent display orders.
This is an example of using the command (vendor dependent command).

In the recording / reproducing apparatus 2, the recording / reproducing unit 14
Receives the digital broadcast data via the D-I / F 13 and records it on a recording medium (not shown). In addition, the recording / reproduction control unit 15 uses the D-I / F 13 to
A format capable of receiving display program information in a command format and recording it on a recording medium (for example, PMT- corresponding to FIG. 2).
PID ), and the recording / reproducing unit 14 records the digital broadcast data in a predetermined recording area of the recording medium.

In the above, a subcode area or an ID area is exemplified as the predetermined recording area of the recording medium. FIG. 3 shows the subcode area, and FIG. 4 shows the ID area. The sub-code area is a recording area provided in each track separately from the main area in which data is mainly recorded. The ID area is a recording area provided separately from the recording area in which data is mainly written for each sync block forming the main area.

It is also possible to record on a recording medium in parallel with viewing while receiving.

Next, the operation of the digital broadcast multi-program recording / reproducing system in the present embodiment when reproducing digital broadcast data from a recording medium will be described.

The recording / reproducing unit 14 is a recording medium (not shown).
The digital broadcast data recorded on the
This is sent to the receiving device 1 through F13. Further, the recording / reproducing control unit 15 causes the recording / reproducing unit 14 to reproduce the display program information and converts it into the command format as described above.
It is sent to the receiving device 1 via the D-I / F 13.

In the receiver 1, the switch 12 is switched to the contact b side. Therefore, the digital broadcasting data sent from the recording / reproducing apparatus 2 is D-I.
It is sent to the demultiplexer 8 and the program information analysis unit 6 via the / F7 and the switch 12. Further, the sent display program information is sent to the system control unit 9 via the program information analysis unit 6 via the D-I / F 7 and the switch 12. The system control unit 9 identifies the program corresponding to the transmitted display program information as a program to be displayed on the display, and causes the demultiplexer 8 to display the video data and audio corresponding to the program identified from the TS of the digital broadcast data. Each individual data stream (data string) such as data is separated and output to the decoder 10. The decoder 10 decodes these data streams to display 3,
Output to a speaker (not shown) or the like.

From the above description, the digital broadcast multi-program recording / reproducing system according to the present embodiment is capable of specifying the program to be displayed first when reproducing the recorded multi-program. It turns out to be a system.

In the present embodiment, the display program information of the present invention is described as being converted into the command format when the data is transferred between the receiving device and the recording / reproducing device, but the present invention is not limited to this. Absent. In short, the display program information created by the display program information creating means of the present invention is
It is transferred between the receiving device and the recording / reproducing device and recorded / reproduced without adversely affecting the recorded / reproduced digital broadcast data, and finally reproduced and sent to the display control means. It suffices that the displayed program information identifies the same program as when it was created.

Further, although the display program information of the present invention has been described in this embodiment as the information for specifying the program to be displayed first at the time of reproduction, the present invention is not limited to this, and in addition to the program to be displayed first. Information that specifies the order of the second and subsequent programs to be displayed. In this case, for example,
Displayed program information is created by associating the PMT-PID corresponding to each program with the display order of each program,
It is necessary to record in a predetermined recording area of the recording medium.

(Second Embodiment) A second embodiment of the present invention will be described below with reference to the drawings. The difference of the present embodiment from the above-described first embodiment is that the display program information is written in a predetermined position of the data ancillary information in the digital broadcast data. Therefore,
In the present embodiment, the same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted. In addition, the elements that are not particularly described are the same as those in the first embodiment.

FIG. 5 is a block diagram showing the configuration of a digital broadcast multi-program recording / reproducing system according to the second embodiment of the present invention. The configuration of the digital broadcast multi-program recording / reproducing system according to the present embodiment is
The difference from the configuration of the digital broadcast multi-program recording / reproducing system in the embodiment is that the receiving device 1 includes the program information rewriting processing unit 16 having the function of the data attached information writing means of the present invention, and the recording / reproducing device. No. 2 does not include the recording / reproducing control unit 15 included in the first embodiment.

Next, the operation of this embodiment will be described.

Regarding the operation of the digital broadcast multi-program recording / reproducing system according to the present embodiment when the digital broadcast data is viewed while being received, the digital broadcast multi-program recording / reproducing according to the above-mentioned first embodiment will be described. Since the operation is similar to that of the system, its explanation is omitted.

The operation of the digital broadcast multi-program recording / reproducing system in the present embodiment when recording digital broadcast data in a recording medium will be described.

Digital broadcasting data is sent from the tuner / demodulation / error correction unit 5 to the program information analysis unit 6 via the switch 12 in the same manner as when viewing while receiving. At this time, the switch 12 has the contact a as shown in FIG.
Has been switched to the side. The program information analysis unit 6 uses the PAT in the sent digital broadcast data to create title information of the program included in the digital broadcast data. The system control unit 9 causes the display 3 to display the title information via the demultiplexer 8 and the decoder 10. The user sees this title information,
The program to be displayed first at the time of reproduction is specified, and the specified program is specified by the program selection input unit 11. The system control unit 9 creates the PMT-PID corresponding to the designated program as the display program information by the output from the program selection input unit 11, and sends it to the program information rewriting processing unit 16. The program information rewriting processing unit 16 sends the PMT-PID to the PA in the digital broadcast data sent via the program information analysis unit 6.
Write to the write position of the PMT-PID initially set in T so that PMT-PIDs at other write positions are not duplicated or missing in the PMT-PID existing in the PAT before rewriting. ,rewrite. That is, PMT in PAT
Rewriting the PID array. However, the above
When the same PMT-PID as the PMT-PID is written in the writing position, the PAT becomes the same before and after the writing as a result. Like the flow, writing / rewriting may be omitted. An example of rewriting the array of PMT-PIDs in the PAT is shown in FIG. 7 as an example in which the program 3 is specified as the first program to be displayed during reproduction. Before rewriting, the programs 1, 2, 3, and 4 were arranged in this order, but since the program 3 was brought in first, the programs 3, 1, 2, and 4 were arranged in that order. In addition,
The actual writing / rewriting of PMT-PID is shown in FIG.
It is performed at the position of "program map PID" in the structure of the AT.

The digital broadcast data whose PAT has been rewritten is sent from the program information rewriting processing section 16 to the recording / reproducing apparatus 2 via the DI / F7. In the recording / reproducing apparatus 2, the recording / reproducing unit 14 is arranged via the D-I / F 13 to
It receives digital broadcast data and records it on a recording medium (not shown).

It is also possible to record on a recording medium in parallel with viewing while receiving.

Next, the operation of the digital broadcast multi-program recording / reproducing system in the present embodiment when reproducing digital broadcast data from a recording medium will be described.

The recording / reproducing unit 14 is a recording medium (not shown).
The digital broadcast data recorded on the
This is sent to the receiving device 1 through F13.

In the receiver 1, the switch 12 is switched to the contact b side. Therefore, the digital broadcasting data sent from the recording / reproducing apparatus 2 is D-I.
It is sent to the demultiplexer 8 and the program information analysis unit 6 via the / F7 and the switch 12. Program information analysis unit 6
Reads the PAT from the sent digital broadcast data, and sets the PMT-PI initially set during the PAT.
D is sent to the system controller 9. The system control unit 9 identifies the program corresponding to the sent PMT-PID , and the demultiplexer 8 receives individual data such as video data and audio data corresponding to the program identified from the TS of the digital broadcast data. The stream (data string) is separated and output to the decoder 10. The decoder 10 decodes these data streams and outputs them to the display 3, a speaker (not shown) and the like.

From the above description, the digital broadcast multi-program recording / reproducing system according to the present embodiment is capable of specifying the program to be displayed first when reproducing the recorded multi-program. It turns out to be a system.

In the present embodiment, the display program information of the present invention has been described as the information specifying the program to be displayed first, but the present invention is not limited to this. Information that specifies the order of the second and subsequent programs to be displayed. In this case, for example,
As shown in FIG. 7, it is necessary to define the arrangement order of the PMT-PIDs in the PAT to correspond to the order of the programs to be displayed, and to create the display program information and specify the display order using the information. .

(Third Embodiment) A third embodiment of the present invention will be described below with reference to the drawings. The present embodiment is different from the above-described second embodiment in that the predetermined position of the data ancillary information in the digital broadcast data in which the display program information is written is not the position in the PAT but the PID other than PAT and PMT. This is a point regarding the position in the table of. Therefore, in this embodiment, the same parts as those in the second embodiment are designated by the same reference numerals and the description thereof will be omitted. In addition, the elements that are not particularly described are the same as those in the second embodiment.

FIG. 9 is a block diagram showing the structure of a digital broadcast multi-program recording / reproducing system according to the third embodiment of the present invention. The configuration of the digital broadcast multi-program recording and reproducing system according to the present embodiment is the second
The difference from the configuration of the digital broadcast multi-program recording / reproducing system in the embodiment is that instead of the program information rewriting processing unit 16, a program information writing unit 17 having the function of the data attached information writing means of the present invention is provided. Be prepared.

Next, the operation of this embodiment will be described.

Regarding the operation of the digital broadcast multi-program recording / reproducing system in the present embodiment when the digital broadcast data is viewed while being received, the operation of the digital broadcast multi-program in the above-described first and second embodiments will be described. Since the operation is the same as that of the program recording / playback system, description thereof will be omitted.

The operation of the digital broadcast multi-program recording / reproducing system in the present embodiment when recording digital broadcast data in a recording medium will be described.

Digital broadcasting data is sent from the tuner / demodulation / error correction unit 5 to the program information analysis unit 6 via the switch 12 in the same manner as when viewing / listening while receiving. At this time, the switch 12 has the contact a as shown in FIG.
Has been switched to the side. The program information analysis unit 6 uses the PAT in the sent digital broadcast data to create title information of the program included in the digital broadcast data. The system control unit 9 causes the display 3 to display the title information via the demultiplexer 8 and the decoder 10. The user sees this title information,
The program to be displayed first at the time of reproduction is specified, and the specified program is specified by the program selection input unit 11. The system control unit 9 creates the PMT-PID corresponding to the designated program as the display program information by the output from the program selection input unit 11, and sends it to the program information writing unit 17. The program information writing unit 17 writes the PMT-PID in a table of PIDs other than PAT and PMT, which is data auxiliary information in the digital broadcast data sent via the program information analysis unit 6. Write in position. Here, it is assumed that this writing position is the descriptor of the transmission info loop in the selection information table (SIT). FIG. 10 shows the structure of SIT. FIG. 10A shows the overall structure of the SIT, and the hatched portion is the descriptor of the transmission info loop. FIG. 10B shows the detailed structure of the descriptor of the transmission info loop, and the PMT-PID is written in the shaded area.

The digital broadcast data in which the display program information is written in the SIT is sent from the program information writing section 17 to DI.
It is sent to the recording / reproducing apparatus 2 via / F7. In the recording / reproducing apparatus 2, the recording / reproducing unit 14 receives digital broadcast data via the D-I / F 13 and records it on a recording medium (not shown).

It is also possible to record on a recording medium in parallel with viewing while receiving.

Next, the operation of the digital broadcast multi-program recording / reproducing system in the present embodiment when reproducing digital broadcast data from a recording medium will be described.

The recording / reproducing unit 14 is a recording medium (not shown).
The digital broadcast data recorded on the
This is sent to the receiving device 1 through F13.

In the receiver 1, the switch 12 is switched to the contact b side. Therefore, the digital broadcasting data sent from the recording / reproducing apparatus 2 is D-I.
It is sent to the demultiplexer 8 and the program information analysis unit 6 via the / F7 and the switch 12. Program information analysis unit 6
Reads the SIT from the sent digital broadcast data and sends the PMT-PID written in the SIT to the system controller 9. The system control unit 9 identifies the program corresponding to the sent PM-PID , and the demultiplexer 8 receives individual data such as video data and audio data corresponding to the program identified from the TS of the digital broadcast data. Decoder 1 by separating the stream (data string)
Output to 0. The decoder 10 decodes these data streams and outputs them to the display 3, a speaker (not shown) and the like.

From the above description, the digital broadcast multi-program recording / reproducing system according to the present embodiment is capable of specifying the program to be displayed first when reproducing the recorded multi-program. It turns out to be a system.

In the present embodiment, the display program information of the present invention has been described as the information for specifying the program to be displayed first, but the present invention is not limited to this. Information that specifies the order of the second and subsequent programs to be displayed. In this case, for example,
In the shaded area of FIG. 10B in the SIT, the PMT- corresponding to each program is displayed in the order corresponding to the order of the programs to be displayed.
Write the PID, the arrangement order of the PMT-PID in the SIT, is defined as corresponding to the order of the program to be displayed, the display order of the specific needs to be performed using the created and it displays program information.

(Fourth Embodiment) A fourth embodiment of the present invention will be described below with reference to the drawings. This embodiment is different from the third embodiment described above in that the data attached information writing means of the present invention is provided not in the receiving device but in the recording / reproducing device. Therefore, in the present embodiment, the same parts as those in the third embodiment are designated by the same reference numerals and the description thereof will be omitted.
In addition, those that are not particularly described are the same as those in the third embodiment.

FIG. 11 is a block diagram showing the structure of a digital broadcast multi-program recording / reproducing system according to the fourth embodiment of the present invention. The configuration of the digital broadcast multi-program recording / reproducing system according to the present embodiment differs from the configuration of the digital broadcast multi-program recording / reproducing system according to the third embodiment. That is, the program information writing section 17 having the above is provided in the recording / reproducing apparatus 2 instead of the receiving apparatus 1, and the recording / reproducing apparatus 2 further includes the recording / reproducing writing control section 18. The recording / reproducing / writing control unit 18 controls the recording / reproducing unit 14 and the program information writing unit 17 at the time of recording and reproducing the digital broadcast data on a recording medium (not shown). Next, the operation of this embodiment will be described.

Regarding the operation of the digital broadcast multi-program recording / reproducing system in the present embodiment when the digital broadcast data is viewed while being received, the operation of the digital broadcast multi-program in the above-described first to third embodiments will be described. Since the operation is the same as that of the program recording / playback system, description thereof will be omitted.

The operation of the digital broadcast multi-program recording / reproducing system in the present embodiment when recording digital broadcast data in a recording medium will be described.

Digital broadcasting data is sent from the tuner / demodulation / error correction unit 5 to the program information analysis unit 6 via the switch 12 in the same manner as when viewing while receiving. At this time, the switch 12 is switched to the contact a side as shown in FIG. The program information analysis unit 6 uses the PAT in the sent digital broadcast data to create title information of the program included in the digital broadcast data. The system control unit 9 causes the display 3 to display the title information via the demultiplexer 8 and the decoder 10. The user looks at the title information, specifies the program to be displayed first at the time of reproduction, and specifies the specified program by the program selection input unit 11. The digital broadcast data is sent from the program information analysis unit 6 to DI /
It is sent to the recording / reproducing apparatus 2 via F7. Further, the display program information representing the designated program is the program selection input unit 11
Is generated by the system control unit 9 by the output from and is sent to the recording / reproducing apparatus 2 via the D-I / F 7. Here, the display program information is sent to the recording / reproducing apparatus 2 as a command to write the PMT-PID corresponding to the designated program at a predetermined writing position of the data ancillary information in the digital broadcast data. As this command, for example, the IEEE 1394 command illustrated in FIG. 2 can be used.

In the recording / reproducing apparatus 2, the program information writing unit 17 receives the digital broadcast data via the D-I / F 13, and the recording / reproducing writing control unit 18 makes the D-I / F.
The display program information in the command format is received via 13. The recording / reproducing / writing control unit 18 causes the program information writing unit 17 to set the PMT-PID corresponding to the designated program in accordance with the display program information in the command format, which is the data ancillary information in the digital broadcast data. , PAT and PMT are written as display program information at the writing position in the PID table, and then the recording / reproducing unit 14 records this on a recording medium (not shown). Also in the present embodiment, as in the third embodiment, the writing position is SI
Let it be the descriptor of the transmission info loop in T.

It is also possible to record on a recording medium in parallel with watching while receiving.

Next, the operation of the digital broadcast multi-program recording / reproducing system in the present embodiment when reproducing digital broadcast data from a recording medium will be described.

The recording / reproducing unit 14 is a recording medium (not shown).
The digital broadcast data recorded in (1) is reproduced and sent to the receiving device 1 via the recording / reproduction writing control unit 18 and the D-I / F 13. In addition, the recording / reproduction writing control unit 18
The display program information written in a predetermined writing position of the reproduced digital broadcast data is read, converted into the command format as described above, and sent to the receiving device 1 via the D-I / F 13.

In the receiver 1, the switch 12 is switched to the contact b side. Therefore, the digital broadcasting data sent from the recording / reproducing apparatus 2 is D-I.
It is sent to the demultiplexer 8 and the program information analysis unit 6 via the / F7 and the switch 12. Further, the sent display program information is sent to the system control unit 9 via the program information analysis unit 6 via the D-I / F 7 and the switch 12. The system control unit 9 identifies the program corresponding to the transmitted display program information as a program to be displayed on the display, and causes the demultiplexer 8 to display the video data and audio corresponding to the program identified from the TS of the digital broadcast data. Each individual data stream (data string) such as data is separated and output to the decoder 10. The decoder 10 decodes these data streams to display 3,
Output to a speaker (not shown) or the like.

From the above description, the digital broadcast multi-program recording / reproducing system according to the present embodiment is capable of specifying the program to be displayed first when reproducing the recorded multi-program. It turns out to be a system.

In the present embodiment, the display program information of the present invention has been described as being converted into the command format when the data is transferred between the receiving device and the recording / reproducing device. Similar to the form, it is not limited to this.

In the present embodiment, the display program information of the present invention has been described as the information for specifying the program to be displayed first, but the present invention is not limited to this. Information that specifies the order of the second and subsequent programs to be displayed. In this case, it is necessary to take the same measures as those described in the third embodiment.

In the above-described first to fourth embodiments, the digital broadcast multi-program recording / reproducing system of the present invention has been mainly described, but the digital broadcast multi-program recording / reproducing method of the present invention is as follows. The method described in the above description.

Further, in the above-described first to fourth embodiments, the digital communication satellite broadcasting using the MPEG2 system has been described as an example, but the present invention is not limited to this, and it is possible to transmit / receive multiplexed digital broadcasting data. It may be one using another system used.

Furthermore, in each of the above-described first to fourth embodiments, each means of the present invention has been described as being provided in either the receiving device or the recording / reproducing device of the present invention. Not limited to the example of the fourth embodiment, each unit other than the recording / reproducing device of the present invention may be provided in either the receiving device or the recording / reproducing device of the present invention. However, when each means exchanges data between the receiving device and the recording / reproducing device, the data exchange is
Measures for transferring between the receiving device and the recording / reproducing device without adversely affecting the reproduced digital broadcast data (for example, commanding display program information performed in the first embodiment) Carry out as needed. Further, each unit of the present invention may be provided in a device in which the functions of the receiving device and the recording / reproducing device are integrated.

Further, in the above-mentioned first to fourth embodiments, the program input from the program selection input means of the present invention is described as being specified as the program to be displayed first at the time of reproduction. Not limited to this, for example, time management information (for example, PCR) selected at the time of recording on the recording medium.
(Program Clock Reference:
The program corresponding to the program time reference reference value)) may be specified as the program first displayed at the time of reproduction.

[0093]

As is clear from the above description, according to the present invention of claim 1, at the time of reproducing the recorded multi-program, at least the program to be displayed first can be specified and the multi-program recording / reproducing of the digital broadcast is performed. A method can be provided. Further, the present invention according to claim 3 can provide a multi-program recording / reproducing system for digital broadcasting, which can specify at least the first program to be displayed when reproducing the recorded multi-program.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a digital broadcast multi-program recording / reproducing system according to a first embodiment of the present invention.

FIG. 2 is a diagram showing an example of a command of display program information according to the first embodiment of the present invention.

FIG. 3 is a diagram showing a sub-code area which is a recording area in the first embodiment of the present invention.

FIG. 4 is a diagram showing an ID area which is a recording area according to the first embodiment of the present invention.

FIG. 5 is a block diagram showing a configuration of a digital broadcast multi-program recording / reproducing system according to a second embodiment of the present invention.

FIG. 6 is a flowchart showing an example of a PAT rewriting procedure according to the second embodiment of the present invention.

FIG. 7 is a diagram showing an example of rewriting an array of PMT-PIDs in a PAT according to the second embodiment of the present invention.

FIG. 8 is a diagram showing a structure of PAT.

FIG. 9 is a block diagram showing a configuration of a digital broadcast multi-program recording / reproducing system according to a third embodiment of the present invention.

FIG. 10 is a diagram showing a structure of SIT.

FIG. 11 is a block diagram showing a configuration of a multi-program recording / reproducing system for digital broadcasting according to a fourth embodiment of the present invention.

FIG. 12 is a diagram showing an example of the structure of a TS.

FIG. 13 is a block diagram showing a configuration of a conventional digital broadcast multi-program recording / reproducing system.

[Explanation of symbols]

1 receiver 2 Recording / reproducing device 3 display 4 antenna 5 Tuner / demodulation / error correction section 6 Program information analysis section 7, 13 D-I / F 8 demultiplexer 9 System control unit 10 decoder 11 Program selection input section 12 switches 14 Recording / playback section 15 Recording / playback control unit 16 Program information rewriting section 17 Program information writing section 18 Recording / reproducing writing control unit

Claims (14)

(57) [Claims] 1. When recording multiplexed digital broadcast data on a recording medium, display program information for specifying at least a program to be displayed first at the time of reproduction is provided together with the digital broadcast data or the digital broadcast. A multi-program recording / reproducing method for digital broadcasting, characterized by recording a part of data ancillary information in data and determining a program to be displayed according to the display program information at the time of reproduction. 2. The digital broadcasting according to claim 1, wherein when the display program information is recorded in a part of the data ancillary information, another part of the data ancillary information is rewritten and recorded. Multi-program recording / playback method. 3. Display program information creating means for creating display program information for specifying at least the first program to be displayed at the time of reproduction among programs included in the multiplexed digital broadcast data, Recording / reproducing means for recording / reproducing digital broadcast data on / from a recording medium; and display control means for determining to display the specified program according to the display program information at the time of reproduction, wherein the display program information is the A multi-program recording / reproducing system for digital broadcasting, which is recorded on the recording medium together with digital broadcasting data or as a part of data ancillary information in the digital broadcasting data. 4. A recording control means for controlling the recording / reproducing means so that the display program information is recorded in a predetermined recording area of the recording medium when the digital broadcast data is recorded in the recording medium. A multi-program recording / reproducing system for digital broadcasting according to claim 3, wherein 5. The multi-program recording / reproducing system for digital broadcasting according to claim 4, wherein the predetermined recording area is a subcode area or an ID area. 6. The multi-program recording / reproducing system for digital broadcasting according to claim 3, further comprising a data attached information writing unit for writing the display program information at a predetermined position of the data attached information. 7. The data additional information writing means writes the display program information at a predetermined position of the data additional information, and rewrites a part of the data additional information. Multi-program recording / playback system for digital broadcasting. 8. The program map packet identifier ( P) corresponding to the identified program is displayed program information.
MT-PID ), the predetermined position is a position corresponding to the PMT-PID initially set in the program association table (PAT), and the data attached information writing means is The multi-program recording / reproducing system for digital broadcasting according to claim 7, wherein the PAT is rewritten. 9. The display program information is a program map packet identifier ( P) corresponding to the specified program.
MT-PID ), and the predetermined position is in a table of packet identifiers (PID) other than the program association table (PAT) and the program map table (PMT). Alternatively, the digital broadcast multi-program recording / reproducing system according to item 7. 10. The multi-program recording / reproducing system for digital broadcasting according to claim 9, wherein the predetermined position is in a descriptor of a transmission info loop in a selection information table (SIT). 11. A program information analysis means for analyzing the data ancillary information to create title information of a program included in the digital broadcast data, and the user wants to display the title information first during reproduction according to the title information. 11. A program selection input unit for selecting and inputting a program, wherein the program input by the program selection input unit is specified as a program to be displayed first during the reproduction. A multi-program recording / reproducing system for digital broadcasting according to any one of 1. 12. The program according to claim 3, wherein the program corresponding to the time management information selected at the time of recording on the recording medium is specified as a program to be displayed first at the time of reproduction. A digital broadcast multi-program recording / playback system described. 13. The recording / reproducing device is provided in a recording / reproducing device, and each of the devices other than the recording / reproducing device is provided in either the recording / reproducing device or the receiving device. 13. A multi-program recording / reproducing system for digital broadcasting according to any one of 3 to 12. 14. The multi-program recording / reproducing system for digital broadcasting according to claim 3, wherein each of the means is provided in an integrated device.