JP3369099B2 - Multi-program recording system for digital broadcasting - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to digital broadcast multi-program recording for recording on a recording medium such as a video tape a digital broadcast signal in which video and sound data of a plurality of programs (programs) are time-division multiplexed. It is about the system.

[0002]

2. Description of the Related Art Currently, due to advances in digital technology and the like,
Television programs (programs) from broadcasting stations are also being broadcast via communication satellites, and the signals used at that time are not only analog signals but also digital signals. ing. Such a digital broadcast signal is a plurality of programs time-division multiplexed into one data stream. In addition,
The digital broadcast signal includes MPEG2 (Moving Pic) as moving picture coding, acoustic coding, and multiplexing / separation methods.
ture Experts Group 2) is used.

As a system for recording such a digital broadcast signal on a magnetic tape, the following system is known.

FIG. 15 shows a block diagram of such a conventional digital broadcast multi-program recording system. The system includes a receiving device 1 and a recording / reproducing device 2.

The tuner / demodulation / error correction unit 4 inputs digital broadcast signals from a plurality of transponders via the antenna 20, and the program selection input unit 12 selects one of the plurality of transponders from the user. Enter the instructions. Then, the tuner / demodulation / error correction unit 4
The digital broadcast signal of one transponder is selected based on the selection instruction via the first system control means 8 and the program selection input unit 12. Further, the signal waveform of the digital broadcasting signal is shaped and demodulated to correct the signal error. The digital broadcast signal includes packetized AV data (video and audio data) of a plurality of programs and PCRs corresponding to the respective programs.
(Program Clock Reference) and time division multiplexed. Now, the selected digital broadcast signal is output to the demultiplexer 6 via the switch 5 and further to the program information analysis means 7.

On the other hand, the program selection input unit 12 inputs an instruction from the user to select one or a plurality of programs to be recorded on the magnetic tape 21 in the recording / reproducing apparatus 2. Then, the first system control means 8 inputs the instruction through the program selection input section 12, and the program information analysis means 7 controls the program information analysis means 7 so that the PID of the instructed program is analyzed. Control. The program information analysis means 7 analyzes the PID of the instructed program under the control of the first system control means 8 and outputs a digital broadcast signal to the demultiplexer 6 based on the analysis result. The demultiplexer 6 receives the digital broadcast signal from the program information analysis means 7 as a first D-I / F1.
It is output to the recording / reproducing apparatus 2 via 0.

After that, the second D-I / F of the recording / reproducing apparatus 2 is
13 receives the digital broadcast signal from the first D-I / F 10, and the PCR extraction means 41 causes the second D-I / F 13 to enter.
The 27 MHz PLL 16 as a time reference, which is necessary to record the AV data on the magnetic tape 21 from the extracted PCR, by extracting the PCR of any one program of the digital broadcasting signals from
Generate the signal. Then, the recording unit 17 displays the second D-I.
27M while inputting AV data from / F13
The 27 MHz signal from the Hz PLL 16 is input, and the rotary head attached to the rotary drum 19 is used in accordance with the 27 MHz signal to output the second D-I / F1.
The AV data from 3 is recorded on the magnetic tape 21.

When reproducing the AV data recorded on the magnetic tape 21, the reproducing unit 18 first reproduces the AV data recorded on the magnetic tape 21 from the second D-I / F 13.
To the receiving device 1 via. And the first D-I /
The F10 inputs the AV data from the second D-I / F13 and outputs it to the demultiplexer 6 via the switch 5. Then, the demultiplexer 6 converts the AV data of any one program of the digital broadcast signals into A
Output to the V decoder 11, the AV decoder 11 decodes the AV data from the demultiplexer 6, and the display 3 outputs the video and sound of the AV data recorded on the magnetic tape 21.

[0009]

By the way, as described above, in the conventional digital broadcast multi-program recording system, the AV data of a plurality of programs is recorded on the magnetic tape 21.
When recording in, the PCR of any one of these programs will be used.

However, it has not been decided which program PCR is to be selected and used.

Therefore, when the PCR to be used is one of a plurality of programs that is short in time, when the program ends,
Since the PCR that has been used also ends, it becomes impossible to record the AV data of the program that is longer in time than the program on the magnetic tape 21.

[0012] The present invention has a problem that in such a conventional digital broadcast multi-program recording system, when recording AV data of a plurality of programs on a recording medium, it is unclear which program's PCR is used. In consideration of the above, when recording AV data of a plurality of programs on a recording medium, it is an object of the present invention to provide a digital broadcast multi-program recording system that specifically specifies which program's PCR is used. is there.

[0013]

According to the present invention of claim 1, a plurality of programs having AV data of video and / or sound and time management information are time-division multiplexed, and further,
Input means for inputting a digital broadcast signal to which a program guide showing the plurality of programs is added, and rewriting means for rewriting the order of all or part of the programs in the program guide of the digital broadcast signal input by the input means,
By using the selecting means for selecting the time management information of the program of a predetermined rank in the program guide rewritten by the rewriting means, and the time management information selected by the selecting means, all or a part of the AV programs of the plurality of programs are used. A multi-program recording system for digital broadcasting, comprising: recording means for recording data on a predetermined recording medium.

According to a fifth aspect of the present invention, input means for inputting a digital broadcast signal obtained by time-division-multiplexing a plurality of programs having AV data of video and / or sound and time management information, and a plurality of the input means. Storage means for storing the identifier of each program, and selection means for selecting the time management information of any program of the digital broadcast signal input by the input means by using the identifier stored in the storage means, A multi-program for digital broadcasting, comprising: recording means for recording all or part of AV data of the plurality of programs in a predetermined recording medium by using the time management information selected by the selecting means. It is a recording system.

According to a ninth aspect of the present invention, input means for inputting a digital broadcast signal in which a plurality of programs having video and / or sound AV data and time management information are time-division multiplexed, and a predetermined rule. In accordance with the above, instructing means for instructing time management information of any program of the digital broadcast signal input by the input means, selecting means for selecting the time management information based on the instruction of the instructing means, and Recording means for recording all or a part of the AV data of the plurality of programs on a predetermined recording medium by using the time management information selected by the selecting means. System.

According to a thirteenth aspect of the present invention, input means for inputting a digital broadcast signal obtained by time-division-multiplexing a plurality of programs having AV data of video and / or sound and time management information, and the input means. Based on the information added by the addition means for adding information indicating time management information of one of the plurality of programs to the digital broadcast signal input by Selection means for selecting management information,
A multi-program for digital broadcasting, comprising: recording means for recording all or part of AV data of the plurality of programs in a predetermined recording medium by using the time management information selected by the selecting means. It is a recording system.

According to a seventeenth aspect of the present invention, there is provided input means for inputting a digital broadcast signal in which a plurality of programs having AV data of video and / or sound and time management information are time-division multiplexed, and the plurality of the input means. Among the programs, the time management information extracting means for extracting the time management information of all or a part of the different programs, and the time management information extracted by the time management information extracting means are used to store the plurality of the plurality of programs. Recording means for recording all or part of the AV data of the program in a predetermined recording medium, and final time management information of the time management information used by the recording means,
Alternatively, when the end of the AV data corresponding to the time management information is detected and the last time management information is used by the recording means, the recording means is different from the one before. Is a digital broadcast multi-program recording system.

According to the eighteenth aspect of the present invention, there is provided input means for inputting a digital broadcast signal obtained by time-division-multiplexing a plurality of programs having AV data of video and / or sound and time management information. Using the time management information extraction means for extracting the time management information of any one of the programs and the time management information extracted by the time management information extraction means, all or a part of the plurality of programs Recording means for recording the AV data on a predetermined recording medium, and detection means for detecting the final time management information of the time management information used by the recording means or the end of the AV data corresponding to the time management information. And when the final time management information has been used by the recording means, the time management information extracting means causes the program corresponding to the time management information to be recorded. A multi-program recording system for digital broadcasting, characterized in that the multi-program recording system is provided with a control means for switching control so as to extract time management information of any one of the plurality of programs other than .

[0019]

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

(Embodiment 1) First, the configuration of a digital broadcast multi-program recording system according to Embodiment 1 of the present invention will be described.

FIG. 1 is a block diagram of a digital broadcast multi-program recording system according to a first embodiment of the present invention.
The digital broadcast multi-program recording system according to the first embodiment of the present invention includes a receiving device 1 and a recording / reproducing device 2. The receiving device 1 includes a tuner / demodulation / error correction unit 4, a switch 5, a demultiplexer 6, a program information analysis unit 7, a first system control unit 8, and a program information rewriting processing unit (PAT rewriting) 9. , 1st D-I / F10
And an AV decoder 11 and a program selection input unit 12. The recording / reproducing apparatus 2 includes a second D-I / F 13 and a P
AT analysis means 14, PCR extraction means 15, 27 MH
The zPLL 16, a recording unit 17, a reproducing unit 18, and a rotating drum 19 are included. In FIG. 1, a display 3, an antenna 20, and a magnetic tape 2 as a recording medium are shown.
Also displays 1.

The tuner / demodulation / error correction unit 4 inputs the digital broadcast signals from the three transponders via the antenna 20, and outputs the instruction of the program selection input unit 12 to the first instruction.
It is means for selecting a digital broadcast signal of one of the three transponders on the basis of an instruction inputted through the system control means 8. It is also a means for correcting the error of the signal by shaping and demodulating the signal waveform of the digital broadcast signal. Further, when the extracted digital broadcast signal is scrambled, it is also means for canceling the scramble.

The digital broadcast signal from one transponder is, as shown in FIG. 2A, video data, sound data and PCR (Program Clock Referenc).
e; four programs (programs) each having a program time reference value) are packetized and time division multiplexed, and further, PAT (Program Association Table)
, EIT (Event Information Table), PMT (P
It is a stream signal to which a packet of a rogram map table is added. The number attached to the top of each packet of the stream signal is a PID (Packet) for identifying what the packet means.
Identification). PAT is shown in Figure 2.
In the stream signal of (a), it is the data of the packet to which the PID of 00 is attached, and as shown in FIG. 2B, it shows all the programs included in the stream signal. Here, it is assumed that data of four programs of program # 1, program # 2, program # 3, and program # 4 are included. In addition, PAT is in the stream signal of FIG.
It has data with the number of PIDs that specify which PMT packets of the four programs are respectively. For example, the PMT packet PID of program # 1 is 03. In the stream signal of FIG. 2A, EIT is packet data to which a PID of 01 is added.
It stores information on a start time and a duration. Here, for convenience of the following description, it is assumed that four programs are started at the same time, and regarding the time length of the programs, program # 1 is 30 minutes, program # 2 is 60 minutes, and program # 2 is 60 minutes.
It is assumed that 3 has a length of 120 minutes and program # 4 has a length of 45 minutes, and that PCR of each program is present in an amount corresponding to the time length of the program. Next, in the PMT, as shown in FIGS. 2 (c) to (f), the video data, the sound data, and the PCR of each program are included in which packet in the stream signal of FIG. 2 (a). PID to identify if
Is a list of. For example, in FIG. 2C, program #
1 is a table for 1 and is a packet P of video data.
ID is 11, sound data packet PID is 12, PCR
Packet PID is 13. The PCR is used as the time management information described in the claims of the present invention.
Will be used.

Now, the switch 5 is a demultiplexer 6
It is a means for selecting the output of the tuner / demodulation / error correction unit 4 or the output of the first D-I / F 10 as the data input to.

The demultiplexer 6 selects one of the four programs of the digital signal from the tuner / demodulation / error correction section 4 or the first D-I / F 10 under the control of the first system control means 8. Then
AV data of the program (video and sound data)
Is separated and output to the AV decoder 11. Further, under the control of the first system control means 8, a means for outputting all four programs from the tuner / demodulation / error correction section 4, that is, the digital broadcast signal of FIG. But also.

The program information analysis means 7 is means for analyzing information such as AV data, PCR and PAT of the digital signal from the demultiplexer 6.

Based on the instruction from the program selection input section 12, the first system control means 8 selects one transponder from among the digital broadcast signals from the three transponders input by the tuner / demodulation / error correction section 4. It is a means for controlling the tuner / demodulation / error correction unit 4 so that the digital broadcast signal is selected. Further, it is also a means for controlling the program information analysis means 7 so that the program information analysis means 7 analyzes the PID of the instructed program based on the instruction from the program selection input section 12. Further, the first system control means 8 inputs the analysis result, and according to the analysis result, the demultiplexer 6 separates only the AV data of the instructed program and outputs it to the AV decoder 11. It is a means for controlling the demultiplexer 6. Further, the first system control means 8 causes the program information rewriting processing means 9 so that, of the four programs in the digital broadcast signal, the program having the longest AV data in time is the first rank of the PMT. Moreover, it is also a means for controlling the program information rewriting processing means 9 so that the PMT is rewritten.

Program information rewriting processing means (PAT rewriting) 9
Is means for rewriting the order of the four programs in the PMT of the digital broadcast signal under the control of the first system control means 8.

The first D-I / F 10 is means for mediating data communication between the receiving device 1 and the recording / reproducing device 2.

The AV decoder 11 includes a demultiplexer 6
Is a means for decoding AV data from.

The program selection / input unit 12 includes a tuner / demodulator /
It is means for inputting from the user an instruction to select a digital broadcast signal from one transponder among the digital broadcast signals from the three transponders input by the error correction unit 4. Further, the user is instructed to select an AV data program to be output to the display 3 via the AV decoder 11 and further to select an AV data program to be output to the recording / reproducing apparatus 2 via the first D-I / F 10. It is a means to input from.

The second D-I / F13 is the first D-I / F1.
Similar to 0, it is means for mediating data communication between the recording / reproducing apparatus 2 and the receiving apparatus 1.

The PAT analysis means 14 is a means for analyzing which program is the program of the highest rank in the PMT rewritten by the program information rewriting processing means 9.

The PCR extraction means 15 has a second D-I / F1.
P of the earliest program of the rewritten PMT of the digital broadcast signal input to the recording / reproducing apparatus 2 via
It is a means for extracting CR.

The 27 MHz PLL 16 is a means for generating a 27 MHz signal as a time reference, which is equal to the frequency of the PCR, from the PCR extracted by the PCR extracting means 15.

The recording unit 17 includes four AV signals of the digital broadcast signal from the receiving device 1 via the second D-I / F 13.
The data is input, and the rotary drum 19 is operated according to the 27 MHz signal generated by the 27 MHz PLL 16.
It is a means for recording the input AV data on the magnetic tape 21 by using the rotary head attached to the.

The reproducing section 18 is means for reading the AV data recorded on the magnetic tape 21 by using the rotary head mounted on the rotary drum 19.

The rotary drum 19 is used when the recording section 17 records AV data on the magnetic tape 21 or when the reproducing section 1 is used.
The reference numeral 8 has a rotary head necessary for reading AV data from the magnetic tape 21.

The tuner / demodulation / error correction unit 4 as the input means, the program information rewriting processing means 9 as the rewriting means, and the PCR extracting means 1 as the selecting means of the present invention of claim 1
5. The recording unit 17 was used as the recording means.

Next, the operation of the digital broadcast multi-program recording system according to the first embodiment of the present invention will be described.

First, the tuner / demodulation / error correction unit 4
Digital broadcast signals from the three transponders are input via the antenna 20, and the program selection input unit 12 inputs an instruction to select one of the three transponders from the user. Then, the tuner / demodulation / error correction unit 4 inputs the instruction input by the program selection input unit 12 via the first system control unit 8, and selects the digital broadcast signal of one transponder based on the instruction. Then, the signal waveform of the digital broadcasting signal is shaped and demodulated to correct the signal error.

The digital broadcast signal selected by the tuner / demodulation / error correction unit 4 is output to the demultiplexer 6 via the switch 5, and the demultiplexer 6 analyzes the digital broadcast signal by the program information analysis means 7. Output to.

On the other hand, the program selection input unit 12 inputs an instruction from the user to select a program to be recorded on the magnetic tape 21 in the recording / reproducing apparatus 2. Here, for convenience of explanation, it is assumed that all four programs are selected and instructed. Next, the first system control means 8 inputs the instruction through the program selection input section 12 and the program information analysis means 7 so that the PIDs of all four programs are analyzed.
To control.

Then, the program information analysis means 7 is controlled by the first system control means 8 as shown in FIG.
Based on the PMT of each program in (f), the digital broadcast signal from the demultiplexer 6, that is, FIG.
Of the program, the video data of each program, the sound data, and the PID of the PCR are analyzed. For example, based on the PMT of program # 1 in FIG. 2C, the video data, sound data, and PID of PCR of program # 1 are
In the stream signal of FIG.
It is analyzed that it is 12, 13. Further, the program information analysis means 7 analyzes which of the four programs has the temporally longest AV data from the EIT of FIG. 2A. Here, it is analyzed that the program # 3 is a program having the longest AV data in terms of time. Furthermore, the program information analysis means 7
The analysis result and the stream signal of FIG. 2A are output to the demultiplexer 6 via the first system control means 8.

Next, the demultiplexer 6 receives the stream signal from the first system control means 8 shown in FIG.
The analysis result of the program information analysis means 7 is output to the program information rewriting processing means 9.

Further, the first system control means 8 has the program information rewriting processing means 9 in which 4 of the stream signals are included.
In order that the program having the longest AV data in time among the two programs becomes the first rank of PMT, P
Program information rewriting processing means 9 so that MT can be rewritten.
To control. That is, the program information rewriting processing means 9 is controlled so that the program # 3 is rewritten so that the program # 3 becomes the first rank of the PMT.

Then, the program information rewriting processing means 9 has the first
Under the control of the system control means 8, as shown in FIG. 3A, the PMT is rewritten so that the program # 3 becomes the first rank of the PMT. The rewritten P
The AT information will be stored in the program map PID22 in the PAT, as shown in FIG. 3 (b).

After that, the first D-I / F 10 of the recording / reproducing apparatus 2 receives the stream signal after the PAT is rewritten from the program information rewriting processing means 9 and the analysis result of the program information analyzing means 7. Output to the second D-I / F 13.

Next, the second D-I / F 13 outputs the first D-I.
The analysis result and the stream signal from / F10 are input, and the PAT analysis means 14 rewrites P in the stream signal by the program information rewriting processing means 9.
The program of the program in the highest rank of MT is analyzed, and the analysis result is analyzed by PCR extraction means 1
Output to 5. Here, the information that the program of the highest rank is the program # 3 is output to the PCR extracting means 15.

Then, the PCR extraction means 15 uses the second D-
Based on the information that the stream signal from the I / F 13 is input and analyzed by the PAT analysis means 14, the program in the highest order of PMT is the program # 3,
PC of program # 3 of the input stream signal
Extract R.

Next, the 27 MHz PLL 16 is necessary for recording the AV data on the magnetic tape 21 from the PCR extracted by the PCR extracting means 15.
Generates a 27 MHz signal as a time reference equal to the frequency of. Then, the recording unit 17 uses the second D-I / F1.
AV of all four programs of stream signal from 3
Along with inputting data, a 27 MHz signal from the 27 MHz PLL 16 is input, and according to the 27 MHz signal, the rotary head attached to the rotary drum 19 is used to output the AV data from the second D-I / F 13 to the magnetic tape. Record at 21.

By the way, A recorded on the magnetic tape 21
When reproducing the V data, the reproducing unit 18 first reads the AV data recorded on the magnetic tape 21 and outputs the AV data to the receiving device 1 through the second D-I / F 13, and then the first D
The -I / F 10 inputs the AV data from the second D-I / F 13 and outputs it to the demultiplexer 6 via the switch 5. On the other hand, the program selection input unit 12 inputs from the user an instruction as to which of the four programs the AV data of the program is to be output to the display 3,
The demultiplexer 6 inputs the instruction via the first system control means 8, separates the AV data of any one program according to the instruction, and outputs the separated AV data to the AV decoder 11. Then, the AV decoder 11 decodes the AV data from the demultiplexer 6 and outputs it to the display 3, and the display 3 outputs the video and sound of the AV data recorded on the magnetic tape 21.

In the first embodiment described above, the program of the first rank of PAT is used as the program of the predetermined rank described in claim 1, but the program of the predetermined rank described in claim 1 is , PAT is not limited to the first rank program. For example, it may be the second program of the PAT or the third program.

Further, in the above-described first embodiment, the first system control means 8 has the program information rewriting processing means 9 in which the program having the longest AV data in time among the four programs is the earliest of the PMT. It is assumed that the program information rewriting processing means 9 is controlled so that the PMTs are rewritten so that the PMTs are ranked in the order. However, the first system control means 8 inputs a rewriting instruction of the PMT from the user so that any one of the four programs has the highest rank of the PMT, and the program is used so that the instruction is utilized. The information rewriting processing means 9 may be controlled.
Alternatively, when the AV data of any one of the four programs is output to the display 3 in real time, the output program is P
The program information rewriting processing means 9 may be controlled so as to be the first rank of MT. In this case, the display 3 corresponds to the video reproducing apparatus according to claim 4.

(Second Embodiment) The configuration of a digital broadcast multi-program recording system according to a second embodiment of the present invention will be described together with its operation.

FIG. 4 shows a block diagram of a digital broadcast multi-program recording system according to the second embodiment of the present invention.
The difference between the digital broadcast multi-program recording system of the second embodiment and the digital broadcast multi-program recording system of the first embodiment is as follows. That is, the digital broadcast multi-program recording system according to the second embodiment has the program information rewriting processing means 9 and the PAT analysis means 1 provided in the digital broadcast multi-program recording system according to the first embodiment.
4 is not provided, but the receiving device 1 is provided with the storing means 23, and the recording / reproducing device 2 is provided with the PID analyzing means 24. Therefore, in the second embodiment, the first embodiment
Only the differences will be explained.

The storage means 23 is the first system control means 8
Of the stream signal by the control of FIG.
Store the PIDs of the four programs in T. Then, the first system control means 8 uses the longest A in time among the PIDs of the four programs stored in the storage means 23 based on the EIT analysis result of the program information analysis means 7.
Information on which PID of the program having the V data is the PID of the program is stored in the first DI from the storage unit 23.
The storage unit 23 is controlled so as to be output to the recording / reproducing apparatus 2 via / F10. In this case, P of program # 3
The ID information is controlled to be output to the recording / reproducing apparatus 2. The information output from the first D-I / F 10 to the recording / reproducing apparatus 2 is assumed to be output regardless of the stream signal.

Then, in the recording / reproducing apparatus 2, the PID
The analysis unit 24 inputs the information from the storage unit 23 of the reception device 1 via the second D-I / F 13, and the PCR extraction unit 15 extracts the PCR of the program # 3 based on the information. The information for controlling is output. Based on this information, the PCR extraction means 15 extracts the PCR of program # 3. That is, the PCR of the program having the longest AV data in time is extracted.

In the second embodiment described above, the first system control means 8 determines which of the four program PIDs stored in the storage means 23 is the PID of the program having the longest AV data in terms of time. Program PID
The information on whether or not the first D-I / F 10
The storage means 2 so as to be output to the recording / reproducing apparatus 2 via
Suppose you want to control 3. However, the first system control means 8 inputs an instruction for using the PCR of any one of the four programs from the user, and the PID information of the instructed program is recorded / reproduced from the storage means 23. The storage means 23 may be controlled so as to be output to the device 2. Alternatively, when the AV data of one of the four programs is output to the display 3 in real time, the first system control means 8 stores the PID information of the output program in the storage means 23. The storage means 23 may be controlled so that the data is output from the recording / reproducing apparatus 2. In this case, the display 3 corresponds to the video reproducing apparatus according to claim 8.

(Third Embodiment) The configuration of a digital broadcast multi-program recording system according to a third embodiment of the present invention will be described together with its operation. FIG. 5 shows the third embodiment of the present invention.
FIG. 1 is a block diagram of a digital broadcast multi-program recording system. The difference between the digital broadcast multi-program recording system of the third embodiment and the digital broadcast multi-program recording system of the first embodiment is as follows. That is,
The digital broadcast multi-program recording system according to the third embodiment includes the program information rewriting processing means 9 and the PAT included in the digital broadcast multi-program recording system according to the first embodiment.
The recording / reproducing apparatus 2 is provided with a second
The system control means 25 is provided. In addition to that, the operation of the first system control means 8 of the receiving device 1 is different. Therefore, in the third embodiment,
Only the points different from the first embodiment will be described.

Based on the EIT analysis result of the program information analysis means 7, the first system control means 8 has the longest time A among the four programs in the stream signal.
A command for controlling the PCR of the program having the V data to be extracted by the PCR extracting means 15 of the recording / reproducing apparatus 2 is created, and the command is written in the first D-.
It outputs to the recording / reproducing apparatus 2 via I / F10. The command is, for example, IEEE 1394 as shown in FIG.
Command of the interface of
In “MT_PID”, the PID of the program having the longest AV data in time is written. In this case, the PID of program # 3 is written.

Then, the second system control means 25 of the recording / reproducing apparatus 2, based on the command from the receiving apparatus 1,
The PCR extraction unit 15 controls so that the PCR of the program having the longest AV data in time is extracted. Therefore, the PCR extracting means 15 extracts the PCR of the program having the longest AV data in time according to this control.

In the third embodiment described above, the first system control means 8 is used as the instruction means of the present invention according to claim 9.

Further, in the above-described third embodiment, the first system control means 8 causes the PCR extraction means 15 of the recording / reproducing apparatus 2 to extract the PCR of the program having the longest AV data in time. Although it has been stated that a command for controlling is created, the first system control means 8
A command for controlling the PCR of any one of the four programs designated by the user to be extracted by the PCR extracting unit 15 may be created. Alternatively, when the AV data of any one of the four programs is output to the display 3 in real time, the first system control means 8 causes the PCR of the output program to be PC.
It is also possible to create a command for controlling so as to be extracted by the R extraction means 15. In this case, the display 3 corresponds to the video reproducing apparatus according to claim 12.

Furthermore, the command created by the first system control means 8 controls the PCR extraction means 15 of the recording / reproducing apparatus 2 to extract the PCR of the program having the longest AV data in time. If it is not a command, the command generated by the first system control means 8 is, for example, as shown in FIG. 7, for example, PCR of one program is first extracted by the PCR extraction means 15, and when the program ends,
It may be a command for controlling the PCR of the second program to be extracted by the PCR extracting means 15.

(Embodiment 4) The configuration of a digital broadcast multi-program recording system according to Embodiment 4 of the present invention will be described together with its operation.

FIG. 8 shows a block diagram of a digital broadcast multi-program recording system according to a fourth embodiment of the present invention.
The difference between the digital broadcast multi-program recording system of the fourth embodiment and the digital broadcast multi-program recording system of the first embodiment is as follows. That is, the digital broadcast multi-program recording system according to the fourth embodiment has the program information rewriting processing means 9 and the PAT analysis means 1 provided in the digital broadcast multi-program recording system according to the first embodiment.
4 is not provided, but the receiving apparatus 1 is provided with program information creating means (separate PID) 26, and the recording / reproducing apparatus 2 is provided with another PID analysis means 27. Therefore, in the fourth embodiment, only the points different from the first embodiment will be described.

Based on the EIT analysis result of the program information analysis means 7, the first system control means 8 has the longest time A among the four programs in the stream signal.
The program information creating means 26 is controlled so that the program information creating means 26 creates information for controlling the PCR of the program having V data to be extracted by the PCR extracting means 15 of the recording / reproducing apparatus 2. .

Thereafter, the program information creating means 26 controls the PCR extracting means 15 to extract the PCR of the program having the longest AV data in time under the control of the first system controlling means 8. Create information and add it into the stream signal. The added information is written in the descriptor 28 of the table of FIG. 9A, a specific PID is added to the packet of the table, and added to the stream signal of FIG. Note that when the descriptor 28 is written in FIG. 9A, specifically, for example, the descriptor 28
Among the above, “PMT P to be locked” shown in FIG.
It will be written in a place called "ID". Then, the program information creating means 26 outputs the stream signal including the added packet to the recording / reproducing apparatus 2 via the first D-I / F 10.

Next, the separate PID analyzing means 27 of the recording / reproducing apparatus 2 inputs the stream signal from the receiving apparatus 1 through the second D-I / F 13, and the packet table added by the program information creating means 26. Is analyzed based on the PID, and the PCR extraction means 15 controls so that the PCR of the program having the temporally longest AV data is extracted. Therefore, the PCR extraction means 1
5 extracts the PCR of the program with the longest AV data in time.

In the fourth embodiment described above, the program information creating means 26 is used as the adding means of the present invention according to claim 13.

Further, in the above-mentioned fourth embodiment, the program information creating means 26 creates information for controlling so that the PCR of the program having the longest AV data in time is extracted by the PCR extracting means 15. However,
The program information creating means 26 may create information for controlling the PCR of any one of the four programs designated by the user to be extracted by the PCR extracting means 15. Alternatively, when the AV data of any one of the four programs is output to the display 3 in real time, the program information creation unit 26 extracts the PCR of the output program by the PCR extraction unit 15. You may create the information for controlling so that it may be performed.
However, the information is added by being included in one packet in the stream signal. In this case, the display 3 corresponds to the video reproducing apparatus according to claim 16.

(Fifth Embodiment) The configuration of a digital broadcast multi-program recording system according to a fifth embodiment of the present invention will be described together with its operation.

FIG. 10 shows a block diagram of a digital broadcast multi-program recording system according to a fifth embodiment of the present invention. The difference between the digital broadcast multi-program recording system of the fifth embodiment and the digital broadcast multi-program recording system of the first embodiment is as follows. That is, the digital broadcast multi-program recording system according to the fifth embodiment is
The recording / reproducing apparatus 2 is not provided with the program information rewriting processing means 9, the PAT analysis means 14, and the PCR extraction means 15 included in the digital broadcast multi-program recording system of the first embodiment.
In the first PCR extraction means 29, the second PCR extraction means 30, the first 27MHz PLL31, the second 27M
Hz PLL 32, third system control means 33 and PL
The L switch 34 is provided. Further, accordingly, the operation of the program information analysis means 7 also differs from that of the first embodiment. Therefore, in the fifth embodiment, only the points different from the first embodiment will be described. FIG. 11 shows a flowchart of a partial operation of the digital broadcast multi-program recording system according to the fifth embodiment.

Now, the first PCR extraction means 29 is
The PCR of the program # 1 is extracted from the D-I / F 13, and the first 27 MHz PLL 31 generates a 27 MHz signal as a time reference from the PCR extracted by the first PCR extracting means 29. Similarly, the second PC
The R extracting means 30 extracts the PCR of the program # 2 from the second D-I / F 13, and outputs the second 27 MHz PLL 32.
Is the PC extracted by the second PCR extraction means 30.
From R, a 27 MHz signal as a time reference is generated.

Then, the third system control means 33 first causes the PLL switch 3 to input the 27 MHz signal from the first 27 MHz PLL 31 to the recording section 17.
4 is controlled (steps 1 and 2 in FIG. 11).

Next, the recording section 17 displays the second D-I / F 13
Input the AV data of all four programs of the stream signal from the
Input 27MHz signal from L31, 27MH
According to the z signal, the rotary head attached to the rotary drum 19 is used to record the AV data from the second D-I / F 13 on the magnetic tape 21.

As described in the first embodiment, since the program # 1 is the shortest program among the four programs, all the AV data of the program # 1 has been recorded on the magnetic tape 21. However, at that point, the rest of the AV data of the other programs has not been recorded on the magnetic tape 21.

Further, since all the AV data of the program # 1 is recorded on the magnetic tape 21 and the PCR of the program # 1 disappears, the first 27 MHz PLL
The recording unit 17 that has recorded the AV data on the magnetic tape 21 using the 27 MHz signal from 31 cannot record the AV data of other programs on the magnetic tape 21 with the end of the program # 1. .

Therefore, the third system control means 33, in other words, when the PCR of the program # 1 disappears, in other words,
The second PCR, which is generated after the final PCR of the program # 1 is used by the recording unit 17 and thereafter, is generated.
The recording unit 17 stores the 27 MHz signal from the MHz PLL 32.
To control the switching of the PLL switch 34 (steps 1 and 3 in FIG. 11).

Then, the recording unit 17 uses the second 27 MHz.
Using the 27 MHz signal from the PLL 32, the second D-
The AV data of the remaining three programs of the stream signal from the I / F 13 is recorded on the magnetic tape 21.

On the other hand, the program information analysis means 7 detects the final PCR of the program # 1, in other words, detects the disappearance of the PCR of the program # 1, and the first PCR extraction means 29 causes the PCR of the program # 3 to be detected. The first PCR extraction means 29 outputs the second PCR based on the information, as well as the disappearance of the PCR of the program # 1.
Extract the PCR of program # 3 from I / F13. Then, the first 27 MHz PLL 31 is connected to the first P
From the new PCR extracted by the CR extraction means 29, a 27 MHz signal as a time reference is generated. This is because when the AV data of the program # 2 ends, the PCR of the program # 2 disappears and the A of the program # 3
This is to prevent the V data from not being recorded on the magnetic tape 21.

In this way, the first PCR extraction means 2
9 and the second PCR extraction means 30 are used to constantly extract the PCRs of the two programs,
AV of the PCR program used in the recording unit 17
Even if the data ends, the PCR of another program is used to
The AV data of all one program will be recorded on the magnetic tape 21.

The first PCR extracting means 29 and the second PCR extracting means as the time management information extracting means of the seventeenth aspect of the present invention.
The PCR extraction means 30, the program information analysis means 7 as the detection means, and the third system control means 33 as the control means.

In addition, the digital broadcast multi-program recording system according to the fifth embodiment includes the first PCR extracting means 29,
Second PCR extraction means 30, first 27 MHz PLL3
The first and second 27 MHz PLL 32 and the PLL switch 34 are provided. However, in the digital broadcast multi-program recording system of the present invention, the first PCR extracting means 29, the second PCR extracting means 30, and the first 27 MH are used.
zPLL31, second 27MHz PLL32 and PL
The L switch 34 is not provided, and a means for combining them is provided. The means inputs PCRs of all programs, and the third system control means 33 firstly performs PCR of the program # 1. It is assumed that the means is controlled so as to output the 27 MHz signal, and the 27 MHz signal of the PCR of the program # 2 is output when the program # 1 ends. In short, the digital broadcast multi-program recording system of the present invention is provided with an extracting means for extracting all or part of PCRs of different programs among a plurality of programs, and the recording section 17 is extracted by the extracting means. It suffices to record the AV data of all or part of the plurality of programs on the magnetic tape 21 using any of the PCRs.

Further, in the fifth embodiment described above, the program information analysis means 7 detects the final PCR of the program # 1, but it may detect the final AV data of the program # 1. . In short, the program information analysis means 7 only needs to detect the last PCR of the PCR program used by the recording unit 17 or the last of the AV data corresponding to the PCR. In addition, the program information analysis means 7 uses the final PCR,
Alternatively, instead of detecting the end of the AV data corresponding to the PCR, the digital broadcast multi-program recording system of the present invention detects the final PCR or the end of the AV data corresponding to the final PCR. You may separately provide the means to do.

Further, in the above-described fifth embodiment, the first
First, the PCR extracting means 29 of P
It is assumed that the CR is extracted and the second PCR extracting means 30 first extracts the PCR of the program # 2.
The PCR first extracted by the CR extracting means 29 is not limited to the PCR of the program # 1, and the second P
The PCR initially extracted by the CR extraction means 30 is not limited to the PCR of the program # 2. In short, the first
PCR extracting means 29 and second PCR extracting means 30
First, it suffices to first limit PCRs of different programs. Further, the first PCR extracting means 29 and the second PCR extracting means 30 finish extracting the final PCR of the program that has been extracted until then, and then the program, the first PCR extracting means 29, and the second PCR extracting means 29. 2 P
It is only necessary to extract the PCR of a program other than the program that the CR extraction means 30 has input.

(Sixth Embodiment) The configuration of a digital broadcast multi-program recording system according to a sixth embodiment of the present invention will be described together with its operation.

FIG. 12 is a block diagram of a digital broadcast multi-program recording system according to the sixth embodiment of the present invention. The difference between the digital broadcast multi-program recording system of the sixth embodiment and the digital broadcast multi-program recording system of the first embodiment is as follows. That is, the digital broadcast multi-program recording system according to the sixth embodiment is
The point is that the program information rewriting processing means 9 and the PAT analysis means 14 included in the digital broadcast multi-program recording system of the first embodiment are not provided, but the recording / reproducing apparatus 2 is provided with the fourth system control means 35. . Further, as shown in FIG. 13, the 27 MHz PLL 16 includes a subtractor 36, D
Also different from the first embodiment is that it has an A / A circuit 37, an LPF 38, a 27 MHz VCO 39 and a counter 40. Further, the operation of the program information analysis means 7 is also different from that of the first embodiment. Therefore, the sixth embodiment
Then, only the points different from the first embodiment will be described. The fourth system control means 35 of FIG. 12 is also displayed in FIG. Further, FIG. 14 shows a flowchart of a partial operation of the digital broadcast multi-program recording system of the sixth embodiment.

Now, the PCR extraction means 15 is controlled by the fourth system control means 35, and the second D-I / F1 is controlled.
2B among the stream signals from the PAT 3 shown in FIG.
The PCR of the program # 1 in the first rank of is extracted (see FIG.
4 step 1), the 27 MHz PLL 16 uses the PCR extracted by the PCR extraction means 15 from the PCR.
A 27 MHz signal as a time reference equal to the frequency of is generated (step 2 in FIG. 14).

Then, the recording section 17 uses the second D-I / F1
The AV data of all four programs of the stream signals from 3 are input and the 27 MHz PLL1
The 27 MHz signal from 6 is input, and the 27 MHz signal is used to record the AV data from the second D-I / F 13 on the magnetic tape 21 using the rotary head attached to the rotary drum 19.

By the way, as described in the first embodiment,
Since the program # 1 is the shortest program among the four programs, even if all the AV data of the program # 1 has been recorded on the magnetic tape 21, the rest of the AV data of the other programs is still recorded at that time. It has not been recorded on the magnetic tape 21.

Further, since all the AV data of the program # 1 is recorded on the magnetic tape 21 and the PCR of the program # 1 disappears, the AV data is recorded on the magnetic tape 21 by using the 27 MHz signal from the 27 MHz PLL16. When the program # 1 ends, the recording unit 17 cannot record AV data of other programs on the magnetic tape 21 accurately.

Then, the program information analysis means 7 detects the final PCR of the program # 1, and when the final PCR of the program # 1 is used by the recording unit 17, the fourth PCR is executed.
The system control means 35 controls the 27 MHz PLL 16 so that the 27 MHz PLL 16 continues to output the 27 MHz signal by using the final PCR of the program # 1.
The 27 MHz PLL16 is controlled by the 27 MHz PLL16.
The signal of MHz is continuously output to the recording unit 17 (steps 1 and 3 in FIG. 14).

Specifically, as shown in FIG. 13, until the final PCR of the program # 1 is used by the recording unit 17, the 27 MHz PLL 16 first
The counter 40 is connected to the P via the fourth system control means 35.
The PCR of the program # 1 from the CR extracting means 15 is input, and the set value of the counter 40 is set to the first P of the program # 1.
The value of CR is initialized and the signal of the initial value is output to the subtractor 36. On the other hand, the subtractor 36 inputs the first PCR of the program # 1 from the PCR extracting means 15 and the signal of the initial value from the counter 40, subtracts both signals, and outputs a signal having a value substantially 0. Output to the D / A circuit 37. The output of the subtractor 36 becomes substantially 0 because the value of the first PCR from the PCR extracting means 15 and the initial value of the signal from the counter 40 are substantially the same. After that, the D / A circuit 37 converts the input signal into a digital signal and outputs it to the LPF 38,
38 cuts the low frequency component and outputs it to the 27 MHz VCO 39. Then, the 27 MHz VCO 39 inputs the signal from the LPF 38 and generates a 27 MHz signal.
The 7 MHz signal is used by the recording unit 17. By the way, the signal from the 27 MHz VCO 39 is sent to the counter 40.
Is also input to the counter 40, and the initial value is 27 MHz.
The value of the signal from the VCO 39 is sent to the subtractor 36 for the second P
The set value is updated by adding until CR is input, and the signal of the updated value is output to the subtractor 36. The subtractor 36 inputs the signal from the counter 40, the second PCR of the program # 1 from the PCR extracting means 15, subtracts both signals, and outputs the resulting signal as the D / A circuit 3
Output to 7. And as mentioned above, 27MHz
The VCO 39 inputs the signal from the D / A circuit 37 via the LPF 38 and generates a 27 MHz signal equal to the frequency of PCR. The 27 MHz signal is recorded in the recording unit 17
Is used by the counter 40 and is also input to the counter 40.
The value of the signal from the CO 39 is sent to the subtractor 36 for the third PC
The set value is updated by adding until R is input, and the signal of the updated value is output to the subtractor 36. By repeating such operations, the 27 MHz VCO 39 is used for 27 MHz of PCR.
Continue to generate the z signal. However, the subtractor 36, D / A
When the output value of the circuit 37 or the LPF 38 is not a signal having a value of substantially 0, for example, a positive value, 27 MHzV
CO39 generates a signal with a frequency higher than 27 MHz, and for example, in the case of a negative value, 27 MHz VCO39
A signal with a frequency lower than MHz will be generated.
However, the loop of FIG.
The output of 9 is corrected so as to approach 27 MHz, that is, it finally converges substantially at 27 MHz.

By the way, after the same operation is repeated,
When the last PCR of the program # 1 is used by the recording unit 17 and the subtractor 36 does not input the PCR of the program # 1 from the PCR extracting means 15, when the signal from the counter 40 is input and subtracted. , The output from the subtractor 36 becomes negative. Along with that, D
The output of the / A circuit 37 is also substantially negative. Therefore, 27
The MHz VCO 39 does not output the signal of 27 MHz, but continues to output the signal of a frequency lower than that.

Therefore, the last PCR of the program # 1 is completely used by the recording unit 17 so that the 27 MHz VCO 39 always outputs a substantially 27 MHz signal to the recording unit 17, and the fourth system control means 35 The D / A circuit 37 is controlled so that the D / A circuit 37 does not output a signal having a negative value, but outputs a signal having a value substantially 0 as before. And D
Under the control of the fourth system control means 35, the / A circuit 37 outputs a signal that is substantially the same as the signal that has been output up to that point, that is, a signal having a value of substantially 0, to the 27 MHz VCO 39 via the LPF 38, 27MHz VCO
39 inputs the signal from the LPF 38 and uses it, and outputs a signal of substantially 27 MHz to the recording unit 17.

Further, when the last PCR of the program # 1 has been used by the recording section 17, the program information analysis means 7 causes the PCR extraction means 15 to perform the operation shown in FIG.
The second PAT of the above PAT is output such that the PCR from the program # 2, which is longer in time than the program # 1, is extracted. Then, the fourth system control means 35 controls the PCR extraction means 15 based on the information so that the PCR of the program # 2 is extracted from the stream signal from the second D-I / F 13, and the PCR is performed. Extraction means 1
According to the control, the 5 extracts the PCR of the program # 2 from the stream signal from the second D-I / F 13 (step 1 in FIG. 14). Further, the fourth system control means 35 inputs the PCR of the program # 2 of the stream signal from the second D-I / F 13, and the D / I
The first value and the information of the first timing of the program # 2 from the PCR extracting means 15 input to the A circuit 37 are output to the counter 40. Then, the subtractor 36 uses P
The signal having the same value as the PCR value of the program # 2 from the CR extracting means 15 is also input from the counter 40, and the signals are subtracted and a signal having a value substantially 0 is output to the D / A circuit 37. , Using that signal 27
Generates MHz signal. After that, PC of program # 1
27MHz PLL16 in the same way as when using R
Is a new PC extracted by the PCR extracting means 15.
From R, equal to the frequency of PCR, 2 as a time reference
The 7 MHz signal is continuously generated (step 2 in FIG. 14).

The recording unit 17 is a 27 MHz PLL.
The second 27-MHz signal from 16 is used to
The AV data of the remaining three programs of the stream signal from the I / F 13 is recorded on the magnetic tape 21.

When recording the AV data of the program # 3, which is longer than the program # 2, on the magnetic tape 21, the program information analysis means 7 detects the final PCR of the program # 2, When the final PCR of No. 2 is used by the recording unit 17, the program # 1
In the same manner as when the final PCR of the above is used by the recording unit 17, the fourth system control means 35
The 27 MHz PLL 16 is controlled so that the MHz PLL 16 uses the final PCR of the program # 2 and continues to output the 27 MHz signal of the PCR (steps 1 and 3 in FIG. 14). At the same time, the program information analysis means 7
In the CR extracting means 15, the program # which is the third PAT in FIG.
Output information such that PCR from 3 is extracted,
The R extraction means 15 uses the second D-I / I based on the information.
Program # 3 of the stream signal from F13
Of the PCR (step 1 in FIG. 14), 27 MHz
The PLL 16 generates a signal of 27 MHz as a time reference, which is equal to the frequency of the PCR, from the new PCR extracted by the PCR extracting means 15 (step 2 in FIG. 14).

In this way, the fourth system control means 3
Under the control of 5, the 27 MHz PLL 16 continues to output the 27 MHz signal by using the final PCR of the program # 1 or # 2, and further, the PCR extracting means 15 extracts a new PCR and uses it in the recording unit 17. Even when the final PCR has been completed, the PCR of another program is used, and the AV data of all four programs is recorded on the magnetic tape 21.

In the eighteenth aspect of the present invention, the PCR extraction means 15 is used as the time management information extraction means, the program information analysis means 7 is used as the detection means, and the fourth system control means 35 is used as the control means.

Further, in the above-described sixth embodiment, the program information analysis means 7 uses the final PCR of the programs # 1 and # 2.
Was detected, but the final A of programs # 1 and # 2
It may be one that detects V data. In short, the program information analysis means 7 is the last PCR of the PCR program used by the recording unit 17, or its P
It only has to detect the end of the AV data corresponding to the CR. Further, the program information analyzing means 7 does not detect the final PCR or the final AV data corresponding to the PCR, but the digital broadcast multi-program recording system of the present invention uses the final PCR or the final PCR. A means for detecting the end of the AV data corresponding to the final PCR may be separately provided.

Further, in the above-described sixth embodiment, first, the PCR extracting means 15 extracts the PCR of the program # 1 in the highest rank of PAT from the stream signal from the second D-I / F 13. However, the PCR first extracted by the PCR extracting means 15 is not limited to the PCR of the program # 1 which is the earliest PAT. Also, the PCR extracted after the first extracted PCR is also the PCR of the second program # 2 of PAT.
It is not limited to. In short, PCR extraction means 15
First, the PCR of one of the programs in the PAT is extracted, and when the PCR is completed, the PCR of another program that is longer in time than the program is extracted.
All you have to do is extract.

In the first to sixth embodiments described above,
The number of transponders of the digital broadcasting signal input by the tuner / demodulation / error correction unit 4 via the antenna 20 is
Although the number of transponders is three, the number of transponders is not limited to three.

Further, in the first to sixth embodiments described above,
Although one transponder includes four programs, the number of programs included in one transponder is not limited to four. It only needs to be plural.

In the first to sixth embodiments described above,
For convenience of explanation, Program # 1 is 30 minutes, Program # 1
2 for 60 minutes, Program # 3 for 120 minutes, Program #
Although 4 is a 45-minute program, the length of each program is not limited to the above.
For example, of the four programs in program # 1,
If it is the longest show in time, first program #
When the PCR of 1 is used, the PCR of the program # 1 is continuously used while the AV data of the program # 1 is recorded on the magnetic tape 21, so that the PCRs of other programs are used. Without this, the AV data of all programs will be recorded on the magnetic tape 21.

Further, in the first to sixth embodiments described above,
Although the recording unit 17 records four programs from one transponder on the magnetic tape 21 as a recording medium, the number of programs recorded on the magnetic tape 21 by the recording unit 17 is not limited to four, but may be two or three. May be In short, it only needs to be plural.

In the first to sixth embodiments described above,
Although the magnetic tape 21 is used as the recording medium, the recording medium may be a hard disk.

In the first to sixth embodiments described above, outputting AV data to the display 3 in real time and recording AV data on the magnetic tape 21 may be performed simultaneously. Only one of them may be performed.

Further, in the above-described first to sixth embodiments, the tuner / demodulation / error correction unit 4 as the input means,
Program information rewriting processing means 9 as rewriting means, storage means 23 as storing means, first system control means 8 as instructing means, program information creating means 26 as adding means, and program information analyzing means as detecting means. 7 is provided in the receiving device 1, and is PCR extracting means 1 as selecting means.
5, a recording unit 17 as a recording unit, a first PCR extracting unit 29 as a time management information extracting unit, and a second PC
The R extraction means 30, the PCR extraction means 15, and the third system control means 33 and the fourth system control means 35 as control means are provided in the recording / reproducing apparatus 2.
However, the digital broadcast multi-program recording system of the present invention includes an input unit, a rewriting unit, a selecting unit, a recording unit, a storing unit, an instructing unit, an adding unit, a time management information extracting unit,
All or part of the detection means and the control means may be provided in an integrated device.

[0112]

As is apparent from the above description, according to the present invention, when recording AV data of a plurality of programs on a recording medium, specifically, which program PCR is used.
It is possible to provide a digital broadcast multi-program recording system that specifies whether or not to use.

[Brief description of drawings]

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

FIG. 2 shows an example of a digital broadcast signal used in the embodiment of the present invention.

FIG. 3 is a diagram for explaining PAT in the digital broadcast signal used in the embodiment of the present invention.

FIG. 4 is a block diagram of a digital broadcast multi-program recording system according to a second embodiment of the present invention.

FIG. 5 is a block diagram of a digital broadcast multi-program recording system according to a third embodiment of the present invention.

FIG. 6 is an IEEE 139 used in the third embodiment of the present invention.
Explanatory drawing of command of interface 4

FIG. 7 is an IEEE13 separate from the command shown in FIG.
Illustration of 94 interface commands

FIG. 8 is a block diagram of a digital broadcast multi-program recording system according to a fourth embodiment of the present invention.

FIG. 9 is an explanatory diagram of packets of a table created by program information creating means 26 of the digital broadcast multi-program recording system according to the fourth embodiment of the present invention.

FIG. 10 is a block diagram of a digital broadcast multi-program recording system according to a fifth embodiment of the present invention.

FIG. 11 is a flowchart of a digital broadcast multi-program recording system according to a fifth embodiment of the present invention.

FIG. 12 is a block diagram of a digital broadcast multi-program recording system according to a sixth embodiment of the present invention.

FIG. 13 is a block diagram of a 27 MHz PLL of a digital broadcast multi-program recording system according to a sixth embodiment of the present invention and a diagram including a fourth system control means.

FIG. 14 is a flowchart of a digital broadcast multi-program recording system according to a sixth embodiment of the present invention.

FIG. 15 is a block diagram of a conventional digital broadcast multi-program recording system.

[Explanation of symbols]

1 receiver 2 Recording / reproducing device 3 display 4 Tuner, demodulation, error correction section 5 switches 6 Demultiplexer 7 Program information analysis means 8 First system control means 9 Program information rewriting processing means (PAT rewriting) 10 First D-I / F 11 AV decoder 12 Program selection input section 13 Second D-I / F 14 PAT analysis means 15 PCR extraction means 16 27MHz PLL 17 Recording section 18 Playback section 19 rotating drum 20 antenna 21 magnetic tape 22 Program map PID 23 storage means 24 PID analysis means 25 Second system control means 26 Program information creation means (separate PID) 27 Separate PID analysis means 28 Descriptors 29 First PCR extraction means 30 Second PCR extraction means 31 First 27MHz PLL 32 Second 27MHz PLL 33 Third system control means 34 PLL switch 35 Fourth System Control Means 36 Subtractor 37 D / A circuit 38 LPF 39 27MHz VCO 40 counter 41 PCR extraction means

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Claims (20)

(57) [Claims] 1. A digital broadcast signal to which a plurality of programs having AV data of video and / or sound and time management information are time-division multiplexed, and further a program guide showing the plurality of programs is added. Inputting means, rewriting means for rewriting the order of all or some programs in the program guide of the digital broadcast signal input by the inputting means, and time management of programs in a predetermined order in the program guide rewritten by the rewriting means And a recording unit that records the AV data of all or part of the plurality of programs on a predetermined recording medium by using the time management information selected by the selecting unit. Characteristic digital broadcasting multi-program recording system. 2. The rewriting means rewrites the program guide so that the program having the longest AV data in time among the plurality of programs becomes the program of the predetermined rank in the program guide. The multi-program recording system for digital broadcasting according to claim 1, characterized in that 3. The rewriting means gives a user an instruction to rewrite the program guide so that a predetermined program of the plurality of programs becomes a program of the predetermined rank in the program guide. 2. The multi-program recording system for digital broadcasting according to claim 1, wherein the program guide is rewritten according to an instruction input. 4. The rewriting means selects, from among the plurality of programs, a program to be output in real time to a video reproducing apparatus connected to a multi-program recording system for digital broadcasting in the program guide. 2. The digital broadcast multi-program recording system according to claim 1, wherein the program guide is rewritten so as to become a ranking program. 5. Input means for inputting a digital broadcast signal in which a plurality of programs having video and / or sound AV data and time management information are time-division multiplexed, and an identifier for each of the plurality of programs is stored. Storing means for selecting, using the identifier stored in the storing means, selecting means for selecting time management information of any program of the digital broadcast signal input by the input means; and selecting means for selecting the time management information. A multi-program recording system for digital broadcasting, comprising: recording means for recording all or part of the AV data of the plurality of programs in a predetermined recording medium using time management information. 6. The method of using the identifier means to use an identifier of a program having the longest AV data in time among the plurality of programs. Digital Broadcast Multi-Program Recording System. 7. The method of using the identifier means to use an identifier of a program designated by a user among the plurality of programs. Multi-program recording system. 8. The method of using the identifier, of the plurality of programs, uses the identifier of a program output to a video reproducing device connected to the multi-program recording system of the present digital broadcast in real time. The multi-program recording system for digital broadcasting according to claim 5, which means the following. 9. Input means for inputting a digital broadcast signal in which a plurality of programs having video and / or sound AV data and time management information are time-division multiplexed, and said input means according to a predetermined rule. An instruction means for instructing time management information of one of the programs of the digital broadcast signal input by, a selection means for selecting the time management information based on the instruction of the instruction means, and a time selected by the selection means A multi-program recording system for digital broadcasting, comprising: recording means for recording AV data of all or part of the plurality of programs in a predetermined recording medium by using management information. 10. The multi-cast digital broadcast according to claim 9, wherein the predetermined rule is a rule for instructing a program having a temporally longest AV data among the plurality of programs. Program recording system. 11. The multi-channel digital broadcast according to claim 9, wherein the predetermined rule is a rule that a user instructs time management information of a predetermined program among the plurality of programs. Program recording system. 12. The predetermined rule indicates time management information of a program to be output to a video reproducing apparatus connected to a multi-program recording system for digital broadcasting in real time among the plurality of programs. The multi-program recording system for digital broadcasting according to claim 9, wherein the system is a rule. 13. AV data of video and / or sound,
Input means for inputting a digital broadcast signal in which a plurality of programs having time management information are time division multiplexed, and among the digital broadcast signals input by the input means,
An adding unit for adding information indicating time management information of one of the plurality of programs; a selecting unit for selecting the time management information based on the information added by the adding unit; Recording means for recording all or a part of the AV data of the plurality of programs on a predetermined recording medium by using the time management information selected by the selecting means. system. 14. The digital broadcast according to claim 13, wherein the information means instruction information of time management information of a program having the longest AV data in time among the plurality of programs. Multi-program recording system. 15. The multi-program recording for digital broadcasting according to claim 13, wherein the information means instruction information of time management information of a program instructed by a user among the plurality of programs. system. 16. The information means instruction information of time management information of a program to be output to a video reproducing apparatus connected to a multi-program recording system for digital broadcasting in real time among the plurality of programs. 14. The multi-program recording system for digital broadcasting according to claim 13, wherein 17. AV data of video and / or sound,
Input means for inputting a digital broadcast signal in which a plurality of programs having time management information are time-division multiplexed, and time for extracting time management information of all or part of different programs of the plurality of programs, respectively. Management information extraction means, and a recording means for recording AV data of all or part of the plurality of programs in a predetermined recording medium by using any of the time management information extracted by the time management information extraction means, Detection means for detecting the last time management information of the time management information used by the recording means or the end of the AV data corresponding to the time management information; and the last time management information used by the recording means. When the recording is completed, the recording means and the control means for controlling the switching so as to use any one of the time management information different from the one before. A multi-program recording system for digital broadcasting characterized by being provided. 18. AV data of video and / or sound,
Input means for inputting a digital broadcast signal in which a plurality of programs having time management information are time-division multiplexed, and time management information extraction means for extracting time management information of one of the plurality of programs And using the time management information extracted by the time management information extraction means, all or some of the AV programs of the plurality of programs.
Recording means for recording data on a predetermined recording medium, and detection means for detecting the final time management information of the time management information used by the recording means or the end of AV data corresponding to the time management information. When the final time management information has been used by the recording means, the time management information extracting means is any one of the plurality of programs different from the program corresponding to the time management information. A multi-program recording system for digital broadcasting, comprising: a control unit for controlling switching so as to extract time management information of a program. 19. The input device is provided in a predetermined receiving device, the recording device is provided in a predetermined recording device, the rewriting device, the selecting device, the storing device, the instructing device, and the adding device. 19. The digital broadcast multi-program recording according to claim 1, wherein the time management information extracting means, the detecting means and the control means are respectively provided in the receiving device or the recording device. system. 20. All or all of said input means, said rewriting means, said selecting means, said recording means, said storing means, said indicating means, said adding means, said time management information extracting means, said detecting means and said control means The multi-program recording system for digital broadcasting according to any one of claims 1 to 18, wherein a part is provided in an integrated device.