JP2002374487A - Recording method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To record two programs at the same time and to record the two programs together finally on one recording medium. SOLUTION: For this recording method, provided are a 1st recording means which records one of programs when the programs whose broadcasting times overlap with each other are recorded, a 2nd recording means which temporarily records the programs other than the mentioned program and can be accessed at random, and a readout means which reads out the program temporarily recorded by the 2nd recording means. After the 1st recording means completes the recording of the one program, the readout means reads the other program other and the 1st recording means records it.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording apparatus using a magnetic tape such as a VTR (video tape recorder) as a recording medium and a recording apparatus such as a magnetic disk, a flash memory, a hard disk drive (HDD) and the like. In particular, the present invention relates to a recording method that enables simultaneous recording of a plurality of programs having overlapping broadcast times or a plurality of programs multiplexed and transmitted.

[0002]

2. Description of the Related Art With the development of image processing technology and recording technology,
A video signal can be recorded on a recording medium other than a tape-shaped recording medium such as a hard disk drive (hereinafter referred to as an HDD). As described above, when the video signal is recorded on a randomly accessible recording medium such as an HDD, a more effective utilization method has been proposed as compared with the case of recording the video signal on a tape-shaped recording medium. A recording / reproducing apparatus using an HDD has a feature that data can be read and written quickly, so that a video signal of a certain program can be recorded while recording a video signal of a certain program, or a video signal of a certain program can be reproduced. While recording, the video signals of previously recorded programs can be played back simultaneously.

In the recording / reproducing apparatus using the HDD, when recording multiplexed data in which video signals of a plurality of programs are multiplexed, one of the multiplexed multiplexed data is selected and recorded. Or simultaneous recording of multiple angles, simultaneous recording of data broadcasting, and the like.

[0004]

However, the above-mentioned recording / reproducing apparatus using a randomly accessible recording medium such as an HDD is a recording / reproducing apparatus (hereinafter referred to as VTR) using a tape-shaped recording medium such as a magnetic tape. ) And a recording / reproducing apparatus using a disk-shaped recording medium such as an optical disk (hereinafter, referred to as an optical disk recorder), it is more difficult to put a recording medium into and out of the recording medium. In addition, it is expected that a large-capacity random-accessible recording medium will be expensive.

[0005] On the other hand, recording media such as magnetic tapes and optical disks can be easily replaced, so that the capacity per unit or per unit is small, but the problem in terms of capacity can be solved by preparing a plurality of recording media. However, there is a problem that a longer time is required in reading than in the HDD. Therefore, it is difficult to achieve simultaneous recording and reproduction in a VTR that can access only one place at a time, an optical disk recorder that does not have a plurality of pickups, and the like.

Further, in a multi-angle program or data broadcast realized by multiplexing data, it is necessary to record the multiplexed data as it is multiplexed since each multiplexed data is temporally related. Was. However, there are cases where different programs that are completely unrelated are multiplexed into one TS. For example, when recording two or three programs in a TS in which three unrelated programs are multiplexed, the only option is to record the multiplexed TS.

Here, as an example, consider a case where programs A, B and C having a transfer rate of 6 Mbps are recorded by a recording device as shown in FIG. Currently, recording of TS packets in which multi-angle broadcasts and data broadcasts are multiplexed is a DV
HS (registered trademark) HS mode (recording rate is 28.2
Mbps). This is 28.2 Mb
Recording of TS packets in which data information is added to video information from a plurality of angles and main video information is realized at a high recording rate of ps.

[0008] On the other hand, the above-described TS packets separated for each program are programs having a transfer rate of 6 Mbps, and therefore, are each in the LS2 mode (recording rate is 7 Mbps).
Can be recorded with.

When a program is recorded while being multiplexed, 28.2 Mbps × t = 28.2 is required for recording for t seconds.
Requires tMbit capacity. When three programs are separately recorded, recording for 7 seconds × 7 Mbps ×
Recording is possible if there is a capacity of t × 3 programs = 21 tMbit. Therefore, in a recording apparatus with a fixed recording rate such as D-VHS (registered trademark), recording the multiplexed TS while multiplexing it may be inefficient in terms of capacity.

Therefore, in the recording method according to the present invention, when recording a plurality of programs that are broadcast simultaneously or a plurality of programs that are multiplexed and distributed, the respective programs are simultaneously recorded and the respective programs are sequentially recorded. The purpose of this is to record it.

[0011]

In order to solve the above-mentioned problems, when recording a plurality of programs having overlapping broadcast times, one of the plurality of programs is recorded by a first recording means. Then, a program other than the one program is temporarily recorded by a second recording means capable of random access, the program temporarily recorded by the second recording means is read by a reading means, and the first After the recording means completes the recording of the one program, a program other than the one program is read by the reading means and recorded by the first recording means.

Also, a plurality of programs multiplexed and distributed are separated by a separating unit, and when the plurality of programs multiplexed and distributed are recorded, the separation is performed from the plurality of multiplexed programs. One program separated by the
Recording by a second recording means which can be randomly accessed in a state where a program other than the one program is separated by the separation unit, and reads the program recorded by the second recording means And after the first recording means finishes recording the one program, reads a program other than the one program from the reading means and records the program by the first recording means. Provide a way.

[0013] Further, a plurality of programs multiplexed and distributed are separated by a separating unit, and when the plurality of programs multiplexed and distributed are recorded, the separation is performed from the plurality of multiplexed programs. One program separated by the
Recording by a recording means, and recording by a second recording means capable of random access in a multiplexed state other than the one program, read out the program recorded by the second recording means by a reading means, The first
After the recording means has finished recording the one program, the multiplexed program other than the one program is read out from the reading means, separated by the separation unit, and recorded by the first recording means. Recording method characterized by the following.

Furthermore, a plurality of multiplexed and distributed programs are inputted, a maximum transfer rate of the plurality of multiplexed and distributed programs is detected by a detecting means, and the maximum transfer rate detected by the detecting means is detected. If the transfer rate does not exceed the recording rate of the first recording means for recording the program, the plurality of programs multiplexed and distributed by the first recording means are recorded, and the detection is performed. If the maximum transfer rate detected by the means exceeds the recording rate of the first recording means or the maximum recording rate of the recording mode specified by the user, the plurality of multiplexed and distributed programs are transmitted. Separately, at least one of the separated programs is recorded by the first recording means, and the remaining separated programs are randomly accessible by a second recording device. And recording the program recorded by the second recording means and recording the program by the first recording means after the first recording means completes the recording. I do.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Invention) Hereinafter, a recording method according to the present invention will be described with reference to the drawings. In the recording / reproducing apparatus for realizing the recording method according to the present invention, the first
Using a digitally recordable video tape as a recording medium, and a digitally recordable HDD as a second recording medium
You are using Also, a plurality of tuners are mounted to enable reception of a plurality of programs. An MPEG (Motion Picture Expert Group) transport stream (TS) is recorded on the video tape. As in the case of the video tape, recording is performed on the HDD with MPEGTS as it is.

FIG. 1 is a block diagram showing an example of a recording section of a recording / reproducing apparatus for realizing a recording method according to the present invention. MPEGTS is input by a plurality of tuners 1, tuners 2, and an external signal input unit 3, and is sent to a switch circuit unit 4. The switch circuit unit 4 sends a signal to the tape recording signal processing unit 5 or the disk recording signal processing unit 7 according to the instruction issued by the user interface 300. Then, a time code, an absolute track number, and the like are generated for the signal sent to the tape recording signal processing unit 5, and then sent to the tape recording unit 6 and digitally recorded on the tape 100. Tape 10
In 0, a time code, an absolute track number, and the like are recorded in, for example, a subcode area in addition to the video signal and the audio signal.
On the other hand, a time code or the like is generated for the signal sent to the disk recording signal processing unit 7 and then sent to the disk recording unit 8 to be digitally recorded on the disk 200 of the HDD. Similarly to the tape 100, a time code and, if necessary, an absolute track number are recorded on the HDD disk 200 in addition to the video signal and the audio signal.

FIG. 2 is a block diagram showing an example of a reproducing section of a recording / reproducing apparatus to which the recording method according to the present invention is applied. In the figure, the playback of the tape 100 is performed by the tape playback unit 11.
The signal of the tape 100 is read, and the read signal is sent to the tape playback signal processing unit 10. After the tape playback signal processing unit 10 performs error correction and the like, the read signal is sent to the switch circuit unit 4. This is done by: The reproduction of the disc 200 is performed by the disc reproducing unit 1.
3, the signal of the disk 200 is read, the read signal is sent to the disk reproduction signal processing unit 12, and after the disk reproduction signal processing unit 12 performs error correction and the like, the reproduction signal is transmitted to the switch circuit unit 4 and This is performed by sending to the tape recording signal processing unit 5. Next, in the switch circuit unit 4, the user interface 300
In accordance with the instruction issued by the CPU, a playback signal from the tape 100 or a playback signal from the disk 200 is selected, and the selected playback signal is sent to the monitor 4 via the external signal output unit 9.
Output to 00.

Next, FIG. 3 shows an embodiment of a recording method for recording a plurality of programs having different broadcast times by the recording / reproducing apparatus having the above configuration. The start time of program A broadcast on channel A is A_s, the end time of program A is A_e, and the program B broadcast on channel B
Is B_s, the end time of program B is B_e,
Program A with a broadcast time of 30 minutes and Program B with a broadcast time of 15 minutes
Are recorded on a single tape 100. The start time A_s of the program A is earlier than the start time B_s of the program B (hereinafter referred to as A_s <B_s), and the end time A_e of the program A is set to the end time B_
It is assumed that it is later than e (hereinafter referred to as A_e> B_e).

First, when a command from the user to record both the program A and the program B is issued via the above-described user interface 300, the recording / reproducing apparatus which has received the command causes the start times A_s, The recording of the program whose start time is earlier of B_s, that is, the program A in the case of the present embodiment, is started to be recorded on the tape 100. Then, when the start time B_s of the program B comes during the recording of the program A, the program B starts to be recorded on the disk 200 of the HDD in parallel with the recording of the program A on the tape 100. Then, at the end time B_e of the program B, the recording of the HDD on the disk 200 is temporarily stopped, and the recording is continued on the tape 100 until the end time A_e of the program A. Then, at the end time A_e of the program A, recording of the program B recorded on the disk 200 of the HDD starts from the end point X of the program A recorded on the tape 100. When the recording of the program B on the tape 100 is completed, the respective operations are stopped. Then, the program A and the program B, whose broadcasting times overlapped, are on one tape 1
00 is serially recorded.

In this case, the capacity of the HDD disk 200 required for recording data is, as shown in FIG.
A_s = B_s between s and the start time B_s of the program B
(When both programs start at the same time), and
When the relationship between the end time A_e of the program A and the end time B_e of the program B is A_e = B_e (when both programs end at the same time), that is, a program of the same length L starting at the same time This is a case where two programs are recorded and the total time 2L of the two programs is equal to the recording time of the tape 100. In addition, as shown in FIG.
This function can be satisfied if the capacity of the disk 200 is L which is half of the maximum capacity of the tape 100, ie, 2L.

FIG. 5 shows another embodiment of a recording method for recording a plurality of programs having different broadcast times (broadcast start time and broadcast end time are different). As in the embodiment shown in FIG. 3, the start time of program A is A_s, the end time of program A is A_e, the start time of program B is B_s, and the end time of program B is B_e, and the broadcast time of program A is 30 minutes. Assume that the broadcast time of the program B is 15 minutes. In this embodiment, A_s <B_s (the start time of the program A is earlier than the start time of the program B), and A_e <B_e (the program A
Is earlier than the end time of the program B). First, from the user, the program A and the program B
Is performed by the user interface 300. Then, the program A whose broadcast start time is earlier is first recorded on the tape 100. When the start time B_s of the program B comes during the recording of the program A, the tape 10 of the program A
0, the program B is stored in the HDD 20
Start recording at zero.

When the end time A_e of the program A comes, the recording of the program A on the tape 100 is terminated, and the program B recorded on the HDD is recorded after the program A on the tape 100 is recorded from the beginning. Begin to. Here, since the broadcast of the program B continues until the end time B_e, it must be continuously recorded on the HDD until that time. That is, during the period from the end time A_e of the program A to the end time B_e of the program B, the HDD performs a “reading” operation for recording the program B recorded on the HDD on the tape 100 and a program B being broadcast.
Must be performed at the same time.

When the end time B_e of the program B is reached, the recording of the program B on the HDD is terminated, and the remaining portion of the program B recorded on the HDD is continuously recorded on the tape 100. When the recording of the program B on the tape 100 is completed, the programs A and B, whose broadcast times have been overlapped, are serially recorded on one tape. In this embodiment, the capacity of the HDD may be a capacity capable of recording the broadcast time of the program B of 15 minutes since the broadcast time of the program B is 15 minutes.

Here, A_s <B_s (start time of program A is earlier than start time of program B), and A_e <B
Let us consider a case where the capacity of the HDD is maximum at _e (the end time of program A is earlier than the end time of program B). In FIG. 6, program A has a very short time (5 minutes in this embodiment).
If the program B is a program having a very long time (5 hours and 55 minutes in this embodiment), the program B having a broadcast time of 5 hours and 55 minutes is required to realize the recording method of the present invention. This can be realized if there is an HDD having a recording capacity. That is,
If the time of the program A is shorter than that of the above-described embodiment and the time of the program B is longer by that amount, an HDD having a capacity corresponding to the time that can be recorded on one tape at the maximum is necessary for realizing the present invention. It can be seen that it is.

However, according to the “HDD behavior” shown in FIG. 6, from A_e (end of program A) to Y (H
Reproduction of program B by DD and program B to digital VTR
During the recording end), the operation of reproducing from the HDD is performed,
Since the data to be reproduced at the same time is also recorded on the tape 100, it is not necessary to leave the reproduced portion on the disk 200 of the HDD on the disk 200. Therefore,
"Read" and "write" for simultaneous recording and playback on HDD
Are performed in parallel, and the “write” operation is performed on the data area that is no longer necessary, thereby obtaining B_s
(Start time of program B) to A_e (end time of program A)
The recording method of the present invention can be realized if there is an HDD having a capacity enough to record the program for the time of the second time, that is, a capacity enough to record a portion where the broadcast of the program A and the broadcast of the program B overlap. Therefore, even when such an ideal writing method is performed, the HDD capacity is required most when two programs of the same length starting at the same time are recorded as shown in FIG. And the total broadcast time of the two programs is equal to the maximum recording time of the tape 100. Therefore, in both the case of FIG. 3 and the case of FIG. 5, as long as the capacity of the disk 200 of the HDD for recording data is half of the maximum capacity of the tape 100, the recording method of the present invention can be realized.

For example, as a recording apparatus using a replaceable tape as a recording medium, there is D-VHS (registered trademark). Since the maximum capacity of the tape used in this D-VHD is 50 GB, -VHS to digital V
HDD used with D-VHS when TR
Is approximately 25 GB, the above-described function can be realized.

The method of simultaneously recording two programs using a combination of a digital VTR and a HDD using a tape-shaped recording medium has been described. In the recording method according to the present invention, the HDD must be a recording medium that can be randomly accessed and has a high reading speed and a high recording speed because of simultaneous recording and reproduction. on the other hand,
Since there is no special requirement other than that the VTR portion is a recording medium that can be easily replaced, it can be realized by using a disk-shaped recording medium such as a DVD instead of the tape-shaped recording medium described above. is there.

Further, in the recording / reproducing apparatus for realizing the recording method of the present invention, it is possible to have three or more tuners, to increase the capacity of the second recording medium corresponding to the VTR portion, By improving the read / write speed, in the above-described embodiment, it was possible to record only two programs with overlapping broadcast times,
It is also possible to record programs for three or more programs with overlapping broadcast times. For example, when recording three programs with overlapping broadcast times, one program must be recorded in the HD
By recording on the first recording medium corresponding to the portion D and recording the remaining two programs on the second recording medium, recording of three programs can be realized.

Next, a recording method for recording a plurality of multiplexed programs will be described with reference to the drawings. FIG.
Is a single program A separated from a plurality of multiplexed programs.
Is a block diagram showing an example of a recording unit of a digital signal recording / reproducing apparatus used when recording a program A on a first recording medium and recording the program A on a second recording medium in a state where the remaining programs are separated. FIG. Note that the basic configuration is the same as that shown in FIG. 1, but the multiplexed MPEG TS input from the tuner 1 or the external signal input unit 3 is sent to the switch circuit unit 14, and thereafter, Sent to the chemical separation unit 15. Then, as shown in FIG. 7, a TS multiplexed with program A, program B, and program C each having a broadcast time of t seconds.
Are demultiplexed by the multiplexing / demultiplexing unit 15 and sent to the switch circuit unit 4. Then, the program A recorded first according to the instruction from the user interface 300
To the tape recording signal processing unit 5, the remaining programs B and C
To the disk recording signal processing unit 7. The playback unit has the same configuration as that of FIG.

Next, the operation of this embodiment will be described. In the order of three multiplexed programs A, B, and C as shown in FIG.
A case of serial recording on a book tape will be described. It is assumed that the broadcast time of programs A, B, and C is all 30 minutes. First, a user inputs a recording command of the programs A, B, and C broadcasted on the channel A as described above to the recording / reproducing apparatus via the user interface 300. Then, the program A among the programs separated by the demultiplexing unit 15 is first recorded on the tape 100.
At the same time, the remaining program B and program C are separated TS
Is recorded on the disk 20 of the HDD. Note that the recording / reproducing apparatus has a buffer for each of the two programs B and C, and when the separated TS becomes, for example, 99% occupancy for the respective buffers, a burst is recorded on the HDD disk 200. To record. Then, after the lapse of 30 minutes, when the recording of the program A on the tape 100 is completed, the program B recorded on the HDD is started to be recorded after the program A on the tape 100 described above. Subsequently, when the recording of the program B on the tape 100 is completed, the recording of the program C recorded on the HDD after the program B on the tape 100 is started. Note that these orders may be determined based on information specified from the user interface 300. The program to be recorded may be selected from two of the three programs A, B, and C and recorded.

As described above, when the recording of the program C on the tape 100 is completed 90 minutes after the start of the recording, the programs A, B, and C transmitted in a multiplexed manner are serially recorded on one tape 100. The Rukoto.

FIG. 10 shows three multiplexed programs A,
One program A separated from B and C is recorded on the tape 100 as the first recording medium, and the remaining programs B and C are multiplexed while the program A is being recorded on the second recording medium. After recording on the disk 200 of a certain HDD and recording the program A on the first recording medium, the multiplexed remaining programs B and C are separated and connected after the program A on the first recording medium. FIG. 18 is a block diagram showing another example of a recording unit of the recording / reproducing apparatus used when recording the remaining programs B and C. The basic configuration is the same as that of FIG.
Or, the multiplexed M input from the external signal input unit 3
The difference is that the PEG TS is sent to the switch circuit unit 4 and then the TS is sent to the demultiplexing unit 15 and the disk recording signal processing unit 7 without being separated into the programs A, B, and C.

The signals sent to the multiplexing / demultiplexing unit 15 are separated from the TS in which a plurality of programs A, B, and C are multiplexed as shown in FIG. The TS of the desired program is sent to the tape recording signal processing unit 5 based on the user's designation from the user interface 300. On the other hand, the signal sent from the switch circuit unit to the disk recording signal processing unit 7 is recorded on the HDD in a multiplexed TS state.

FIG. 11 is a block diagram of a reproducing section for reproducing the signal recorded in this way. In addition,
The basic configuration is the same as that of FIG. 2 except that the signal processed by the disc reproduction signal processing unit 12 is then sent to the second demultiplexing unit 16 and the information specified by the user from the user interface 300. Is transmitted to the tape recording signal processing unit 5 after separating the TS of the desired program based on the

Next, the three multiplexed programs A, B, and C are serially recorded on one tape in the order of program A, program B, and program C by the method described above with reference to FIG. The case will be described. It is assumed that each of the programs A, B, and C has a broadcast time of 30 minutes. First, when the user issues a command to record the programs A, B, and C as described above, the program A starts to be recorded on the tape 100 from the programs separated by the multiplexing / demultiplexing unit 15. At the same time, the programs A, B, and C are recorded on the HDD in a multiplexed TS state. Thirty minutes later, when the recording of the program A on the tape 100 ends, the signal recorded on the HDD is read and the program A,
Program B is separated from the TS in which B and C are multiplexed, and recording of program B starts after program A recorded on tape 100. Subsequently, when the recording of the program B on the tape 100 is completed, the signal recorded on the HDD is read again and the program A,
The program C is separated from the TS in which B and C are multiplexed, and the recording of the program C is started after the program B recorded on the tape 100. Note that the recording order of these programs may be determined based on information specified by the user from the user interface 300. Also, the number of programs to be recorded may be two out of three. When the recording of the program C on the tape 100 is completed 90 minutes after the start of the recording, the programs A, B, and C transmitted in a multiplexed manner are serially recorded on one tape.

As described above, in the method described with reference to FIG. 8 in which the multiplexed programs are recorded on the HDD in a separated state, the capacity required for the HDD is determined as long as there is a capacity capable of recording the programs B and C. Since this can be realized, the capacity of the HDD is smaller than when programs A, B and C are multiplexed and recorded on the HDD. On the other hand, in the method described in FIG. 10 and FIG. 11 in which the program is multiplexed and recorded on the HDD, the inputted TS may be recorded on the HDD as it is. Thus, unlike the method of recording data on the HDD, there is no need to perform an operation of recording two programs simultaneously on another recording medium. In both cases, when recording on a recording medium with a fixed recording rate such as D-VHS, the same data can be recorded with a smaller capacity by separating and recording in an appropriate mode. There is.

The method for recording a plurality of multiplexed programs using a combination of a VTR and an HDD has been described above. In the method described in FIGS. 10 and 11 in which a plurality of programs are multiplexed and recorded on the HDD, the portion corresponding to the HDD is randomly accessible, and the reading speed and the recording speed are changed. Is not required to be a fast recording medium, and any recording medium may be used as long as the capacity is sufficient. On the other hand, VT
Since there is no special requirement other than that the portion corresponding to R is a recording medium that can be easily replaced, a disk-shaped recording medium such as a DVD may be used instead of the tape-shaped recording medium. (Second Invention) Next, a recording method for selecting and recording an optimum recording method by detecting a maximum transfer rate of a program to be recorded will be described with reference to the drawings. FIG.
According to this, the configuration of the recording unit is substantially the same as the configuration of the recording unit shown in FIG. 8, except that the multiplexed MPEG TS input from the tuner 1 or the external signal input unit 3 is transmitted to the switch circuit unit 14. And then transmitted to the transfer rate detector 17
When the user interface 300 instructs recording without down-conversion, first, the maximum recording rate of the multiplexed TS is set to, for example, the Maximum bit rate descri in the header.
Detected from the ptor, the tape recording signal processing unit 5 performs processing according to an appropriate recording mode. The playback unit is shown in FIG.
The configuration may be the same as that of the reproducing unit shown in FIG.

Still another embodiment will be described with reference to FIG. The basic configuration of the recording unit is substantially the same as that of FIG. 10 except that the multiplexed MPEG TS input from the tuner 1 or the external signal input unit 3 is sent to the switch circuit unit 4 and then transferred. The data is sent to the rate detector 17. Here, in the case where an instruction to record without down-conversion is issued by the user interface 300, first, the maximum recording rate of the multiplexed TS is set to, for example, the Maximum bit ratedescriptor in the header.
Detect from. Then, the tape recording signal processing unit 5 performs a process according to an appropriate recording mode. The reproducing section may have the same configuration as the configuration shown in FIG.

Next, an embodiment of the above-described recording method will be described. For example, consider a case where programs A, B, and C multiplexed at a transfer rate of 4 Mbps by a DVD recorder having a maximum recording rate of 10 Mbps are recorded on a single disk-shaped recording medium. In this case, three programs A,
Since the total transfer rate of B and C is 12 Mbps, it is not possible to record multiplexed data. So 10M
It is necessary to down-convert and record to bps or less or record separately. User interface 3
00, the transfer rate detection unit 17 detects the maximum recording rate of the multiplexed TS and outputs the DV.
When a transfer rate of 12 Mbps exceeding the maximum recording rate of 10 Mbps of the D recorder is detected, the multiplexing / demultiplexing unit 15 is instructed to separate and record the multiplexed programs A, B, and C. As a result, a DV recorded in a state where three programs A, B, and C are serially connected.
The D disk is completed.

Further, recording in a recording / reproducing apparatus equipped with a plurality of recording modes such as D-VHS will be described. FIG. 14 shows the D-VHS recording modes and the respective recording rates. For example, 14Mbps, 10M
When programs A, B, and C multiplexed at a transfer rate of 6 bps and 6 Mbps are recorded on one recording medium, the total transfer rate of the three programs A, B, and C is 30 Mbps. No matter which recording mode is selected, it is not possible to record with multiplexing. In this case, the multiplexed TS is down-converted to 28.2 Mbps or less and recorded, or the multiplexed program A,
It is necessary to record B and C separately.

For example, the user interface 300
If the instruction to perform the down-conversion is issued, the transfer rate detecting unit 17 detects the maximum recording rate of the multiplexed TS, and the transfer rate exceeding the maximum recording rate of this VTR of 28.2 Mbps. 30
When Mbps is detected, the multiplexing / demultiplexing unit 15 is instructed to separate and record the multiplexed program. Then, recording on the tape 100 is performed with the programs A, B, and C separated. At this time, if the VTR has six recording modes as shown in FIG. 14, the transfer rate of program A is 14 Mbps, so even in the HS mode (the recording rate is 28.2 Mbps), the STD mode (the recording rate is 14 Mbps). .1 Mbps). However, since this VTR is a D-VHS and is recorded at a fixed recording rate, recording in the HS mode does not change the video / audio information amount as compared with the STD mode, but records more dummy bits. This requires twice the capacity of the STD mode. In such a case, an optimal mode, in this case, the STD mode is selected and recorded. Similarly, for program B, the transfer rate is 10M
In the case of the program C, the recording is performed in the LS2 mode because the transfer rate is 6 Mbps. As a result, the tape 100 in which the three programs A, B, and C are recorded in a serially connected state with a smaller capacity without being down-converted is completed. Next, in the D-VHS, for example, 13 Mbps, 13 Mbps, and 2 Mbps, respectively,
s programs A, B, and C multiplexed on one tape 100
Consider the case of recording in In this case, unlike the above example, the total transfer rate of the three programs A, B, and C is 28 Mb.
ps and the maximum recording rate of D-VHS is 28.2 Mb.
ps is lower. In this case, the three programs A, B, and C may be recorded while being multiplexed as shown in FIG. 15, or may be recorded separately. However, when three programs A, B, and C are recorded while being multiplexed, the HS mode, that is, 2 programs, is used.
Although it is possible to record at a recording rate of 8.2 Mbps, if separated, programs A and B must be recorded in STD mode and program C in LS3 mode, so a total recording rate of 30 Mbps is required, and three programs are multiplexed. This requires a larger capacity than recording data in an encrypted state. Therefore, unlike the case of FIG. 7, recording with multiplexing is possible with a smaller capacity. Therefore, when an instruction to perform recording without down-conversion and an instruction to record with the smallest capacity are issued by the user interface 300, the transfer rate detecting unit 17 calculates the sum of the three programs A, B, and C. Detect the transfer rate.
Further, when the multiplexing of the three programs A, B, and C is separated, the respective transfer rates are detected, and the lowest rate mode that can be recorded without down-converting each of them is selected, and the recording rate of those recording rates is reduced. Calculate the sum. The transfer rate of each separated data is the maximum bit
rate descriptor or MPEG video layer, M
It can be detected by referring to the bit rate index in the PEG audio layer. Then, the two rates thus detected are compared, and recording is performed at a lower rate. As a result, a tape 100 in which three programs are serially recorded with a smaller capacity without down-conversion is completed.

[0042]

As described in detail above, according to the recording method of the present invention, the first recording medium is combined with the second randomly accessible recording medium that assists the first recording medium.
The effect that two programs can be simultaneously recorded by temporarily recording the overlapping portion on the second auxiliary recording medium, and the two programs can be collectively recorded on one recording medium To play. In addition, the capacity of the second recording medium is half of the maximum capacity that can be recorded at a time on the first recording medium by simultaneously recording and reproducing on the HDD disk and ideally overwriting the disk area. It can be realized with the capacity of. Also, the multiplexed T
By temporarily recording S on the second recording medium, a plurality of programs can be recorded with a smaller capacity. Further, there is an effect that the capacity can be reduced by detecting the transfer rate of the multiplexed program.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an example of a recording unit of a recording / reproducing apparatus to which a recording method according to the present invention has been applied.

FIG. 2 is a block diagram showing an example of a reproducing unit of a recording / reproducing apparatus to which the recording method according to the present invention has been applied.

FIG. 3 is a diagram showing an example of the operation of the recording method according to the present invention.

FIG. 4 is a diagram showing an operation when the HDD capacity of the reproducing apparatus of the recording method according to the present invention is the maximum.

FIG. 5 is a diagram showing another example of the operation of the recording method according to the present invention.

FIG. 6 is a diagram showing still another example of the operation of the recording method according to the present invention.

FIG. 7 shows a multiplexed T in the recording method according to the present invention.
FIG. 11 is a diagram comparing a case where recording is performed with S and a case where recording is performed with a separated TS.

FIG. 8 is a block diagram showing another embodiment of the recording section of the recording / reproducing apparatus to which the recording method according to the present invention is applied.

FIG. 9 is a diagram showing the operation of the embodiment shown in FIG. 8 of the recording method according to the present invention.

FIG. 10 is a block diagram showing still another embodiment of the recording section of the recording / reproducing apparatus to which the recording method according to the present invention is applied.

11 is a block diagram showing an example of a reproducing unit corresponding to the embodiment shown in FIG. 8 of the recording / reproducing apparatus to which the recording method according to the present invention is applied.

FIG. 12 is a block diagram showing one embodiment of a recording section of a recording / reproducing apparatus to which the recording method according to the second invention is applied.

FIG. 13 is a block diagram showing another embodiment of the recording section of the recording / reproducing apparatus to which the recording method according to the second invention is applied.

FIG. 14 is a diagram showing a recording mode of a D-VHS which is a recording / reproducing apparatus to which the recording method according to the present invention is applied, and respective recording rates.

FIG. 15 is a diagram comparing a case where a multiplexed TS is recorded as it is and a case where a separated TS is recorded in a recording unit of a recording / reproducing apparatus to which the recording method according to the second invention is applied; .

[Explanation of symbols]

 Reference numerals 1 and 2 Tuner 3 External signal input unit 4 Switch circuit unit 5 Tape recording signal processing unit 6 Tape recording unit 7 Disk recording signal processing unit 8 Disk recording unit 9 External signal output unit 10 Tape reproduction signal processing unit 11 Tape reproduction unit 12 Disk Reproduction signal processing unit 13 Disk reproduction unit 14 Switch circuit unit 15, 16 Demultiplexing unit 17 Transfer rate detection unit 100 Tape 200 Disk 300 User interface

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 5/782 K (72) Inventor Wataru Inaba 3-12 Moriyacho, Kanagawa-ku, Yokohama-shi, Kanagawa Japan Victor Co., Ltd. (72) Inventor Seiji Higurashi 3-12-12 Moriyacho, Kanagawa-ku, Yokohama, Japan Victor Co., Ltd. (72) Inventor Toshio Kuroiwa 3-12-12 Moriyacho, Kanagawa-ku, Yokohama, Japan Japan Victor Company F term (reference) 5C018 FA04 5C052 AA01 CC01 CC11 DD04 5C053 FA22 FA23 GA11 GB37 HA26 HA32 LA06 5D044 AB07 BC01 BC02 CC04 CC06 CC09 DE96 EF02 GK05 GK08 HL07 HL14

Claims (4)

[Claims] When recording a plurality of programs having overlapping broadcast times, one of the plurality of programs is recorded by a first recording means, and a program other than the one program can be randomly accessed. Temporarily recording by the second recording means, reading the program temporarily recorded by the second recording means by the reading means, and after the first recording means finishes recording the one program. Recording a program other than the one program by the reading means and recording the program by the first recording means. 2. A plurality of multiplexed and distributed programs are separated by a separating unit, and when the multiplexed and distributed programs are recorded, the separation is performed from the multiplexed programs. One program separated by the unit is recorded by a first recording unit, and a program other than the one program is recorded by a second recording unit that can be randomly accessed while being separated by the separating unit; The program recorded by the recording means is read by the reading means, and after the first recording means finishes recording the one program, a program other than the one program is read from the reading means to read the first program. A recording method characterized by recording by a recording means. 3. A plurality of multiplexed and distributed programs are separated by a separation unit, and when the multiplexed and distributed programs are recorded, the separation is performed from the multiplexed programs. One program separated by the recording unit is recorded by a first recording unit, and a program other than the one program is recorded by a second recording unit that can be randomly accessed in a multiplexed state, The second recording unit Reading the program recorded by the reading means, reading the multiplexed program other than the one program from the reading means after the first recording means finishes recording the one program, Recording method using the first recording means. 4. A plurality of multiplexed and distributed programs are inputted, a maximum transfer rate of the multiplexed and distributed plural programs is detected by a detecting means, and a maximum transfer rate detected by the detecting means is detected. If the rate does not exceed the recording rate of the first recording means for recording the program, the plurality of programs multiplexed and distributed by the first recording means are recorded; If the maximum transfer rate detected by the above exceeds the recording rate of the first recording means or the maximum recording rate of the recording mode specified by the user,
The plurality of multiplexed and distributed programs are separated, at least one of the separated programs is recorded by the first recording means, and the remaining separated programs can be randomly accessed. The program is recorded by a second recording unit, and after the first recording unit finishes recording, a program recorded by the second recording unit is read and recorded by the first recording unit. How to record.