JP2002330375A - Recording and reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recording and reproducing device that can simultaneously record two programs and record the two programs finally onto one recording medium altogether. SOLUTION: The recording and reproducing device is characterized in that the recording and reproducing device has a 1st recording medium that records one program among a plurality of programs in the case of recording a plurality of programs whose broadcast time is overlapped with each other and a 2nd random accessible recording medium that temporarily records other programs than the one program, and after the 1st recording medium completes recording of one program, the recording and reproducing device reproduces other programs than the one program from the 2nd recording medium and records the programs onto the 1st recording medium.

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. More particularly, the present invention relates to a recording / reproducing apparatus which enables simultaneous recording of a plurality of programs having overlapping broadcast times or 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 such as a hard disk drive (hereinafter referred to as an HDD). It has been proposed that a video signal be recorded on a randomly accessible recording medium such as an HDD and used effectively. A recording / reproducing apparatus using an HDD has a feature that data can be read and written quickly, and can simultaneously reproduce a video signal of another program or a video signal recorded immediately before while recording a video signal.

When recording multiplexed data in which a video signal of a program is multiplexed, one of the multiplexed multiplexed data is selected and recorded, or a multi-angle is recorded simultaneously. Simultaneous recording of data broadcasting can be performed.

[0004]

However, a recording / reproducing apparatus using a randomly accessible recording medium such as the HDD described above is more difficult to insert and remove a recording medium than a recording medium such as a magnetic tape or an optical disk. , The capacity is limited. In addition, it is expected that a large-capacity random-accessible recording medium will be expensive. On the other hand, recording media such as magnetic tapes and optical disks can be easily exchanged, so there is no problem in terms of capacity, but it takes more time in reading than in HDDs. 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.

[0005] Also, in a multi-angle program or data broadcast realized by multiplexing data, it is necessary to record the multiplexed data as it is multiplexed because 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, for example, as shown in FIG.
Consider recording s programs A, B, and C. Currently, TS that multiplexes multi-angle broadcasting and data broadcasting
Packet recording is in the D-VHS HS mode (28.2M
(bps). This is 28.2 Mbp
T that adds data information to video information from multiple angles and main video information with a high recording rate of s
The recording of the S packet is realized.

[0007] On the other hand, TS packets separated for each program are programs of 6 Mbps, and can be recorded in the LS2 mode (7 Mbps).

In the case of recording while being multiplexed, 28.2 Mbps × t = 28.2t is required for recording for t seconds.
Mbit capacity is required. In the case of recording separately, recording for 7 seconds × t × 3 programs = 2 for t seconds.
Recording is possible if there is a capacity of 1 tMbit. Therefore,
In a recording apparatus of a fixed recording rate such as D-VHS (registered trademark), it is sometimes inefficient in terms of capacity to record the multiplexed TS while being multiplexed.

[0009]

In order to solve the above-mentioned problems, when recording a plurality of programs having overlapping broadcasting times, a first program for recording one of the plurality of programs is recorded.
Recording means, random-accessible second recording means for temporarily recording a program other than the one program, and reading means for reading a program temporarily recorded by the second recording means. Recording / reproducing apparatus, wherein after the first recording means finishes recording the one program, a program other than the one program is read by the reading means and recorded by the first recording means. I will provide a.

[0010] Also, a separating unit for separating a plurality of multiplexed and distributed programs, and for recording the plurality of multiplexed and distributed programs, separating the plurality of programs from the multiplexed programs. A first recording unit for recording one program separated by the unit, a second randomly accessible recording unit for recording a program other than the one program in a state separated by the separation unit, Reading means for reading a program recorded by the recording means, and after the first recording means finishes recording the one program, reads out a program other than the one program from the reading means, There is provided a recording / reproducing apparatus characterized by recording by a first recording means.

Further, a separating section for separating a plurality of multiplexed and distributed programs, and a recording section for separating the plurality of multiplexed and distributed programs from the plurality of multiplexed programs when recording the plurality of multiplexed and distributed programs. First recording means for recording one program separated by the unit, second randomly accessible recording means for recording a program other than the one program in a multiplexed state, and the second recording means Readout means for reading out a program recorded by the first readout means, after the first recording means has finished recording the one program, read out a multiplexed program other than the one program from the readout means, There is provided a recording / reproducing apparatus characterized by being separated by the separating section and recorded by the first recording means.

[0012] Further, a separating unit for separating a plurality of multiplexed and distributed programs, a detecting means for detecting a maximum transfer rate of the multiplexed and distributed plural programs, and a detecting means for detecting a maximum transfer rate of the multiplexed and distributed programs. First recording means for recording a plurality of programs to be distributed, second recording means capable of random access for temporarily recording the plurality of multiplexed and distributed programs, and A reading means for reading a program recorded by the recording means, wherein a maximum transfer rate detected by the detecting means when the plurality of multiplexed and distributed programs are recorded. However, if the recording rate does not exceed the recording rate of the first recording means, the plurality of programs multiplexed and distributed by the first recording means are recorded, and the maximum number of programs detected by the detecting means is recorded. When the transfer rate exceeds the recording rate of the first recording means or the maximum recording rate of the recording mode specified by the user, at least one program is separated from the plurality of multiplexed and distributed programs. Then, after the first recording means has been recorded, the remaining programs have been recorded by the second recording means, and after the first recording means has finished recording, the second recording means has been recorded by the reading means. A recording / reproducing apparatus for reading a program recorded by the first recording means and recording the program by the first recording means.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Invention) Hereinafter, a recording / reproducing apparatus according to the present invention will be described with reference to the drawings. First
A digitally recordable video tape is used as a recording medium, and an HDD is used as a second recording medium. Also,
In order to enable reception of a plurality of programs, the recording / reproducing apparatus according to the present invention has a plurality of tuners. MPEG (Motion Picture Expert Group)
p) Record the transport stream (TS). H
As in the case of the video tape, recording is performed on the DD with the MPEG TS. FIG. 1 is a block diagram showing an example of a recording unit of the recording / reproducing apparatus according to the present invention. MPEG TS is tuner 1, tuner 2, external signal input unit 3
And is sent to the switch circuit unit 4. In the switch circuit unit 4, the tape recording signal processing unit 5 is operated in accordance with an instruction issued by the user interface 300.
Alternatively, a signal is sent to the disk recording signal processing unit 7. A time code, an absolute track number, and the like are generated for the signal sent to the tape recording signal processing unit 5. Thereafter, the data is sent to the tape recording unit 6 and digitally recorded on the tape 100. On the tape 100, in addition to the video signal and the audio signal, a time code, an absolute track number, and the like are recorded in, for example, a subcode area. Further, a time code or the like is generated for the signal sent to the disk recording signal processing unit 7. Thereafter, the data is sent to the disk recording unit 8 and the disk 20 of the HDD is
Digitally recorded. Similarly to the tape 100, a time code and, if necessary, an absolute track number and the like are recorded on the HDD disk 20 in addition to the video signal and the audio signal.

FIG. 2 is a block diagram showing an example of a reproducing section of the recording / reproducing apparatus according to the present invention. In the figure, the tape 100 is reproduced by a tape reproducing unit 11.
The signal of “0” is read and sent to the tape reproduction signal processing unit 10. After error correction and the like are performed in the tape reproduction signal processing unit 10, the reproduction signal is sent to the switch circuit unit 4. In reproducing the disc 200, a signal of the disc 200 is read by the disc reproducing unit 13, and the read signal is sent to the disc reproduction signal processing unit 12. After error correction and the like are performed in the disk reproduction signal processing unit 12, the signal is sent to the switch circuit unit 4 and the tape recording signal processing unit 5.
In the switch circuit unit 4, a reproduction signal of the tape 100 or a reproduction signal of the disk 200 is output to the monitor 400 via the external signal output unit 9 in accordance with an instruction issued by the user interface 300.

Next, FIG. 3 shows an embodiment of recording and reproduction when recording a plurality of programs having different broadcast times. The start time of the program A is A_s, the end time of the program A is A_e, the start time of the program B is B_s, and the end time of the program B is B_e. Are recorded on a single tape. Further, 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_e of the program B.
Slower (hereinafter referred to as A_e> B_e).

First, the user issues a command to record program A and program B in the user interface 30 as described above.
0, the recording / reproducing apparatus which has received the instruction starts recording the program with the earlier start time A_s, B_s of both programs, that is, the program A in the present embodiment, on the tape 100. Then, during recording of program A, start time B of program B
_S, 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 HDD 200 temporarily stops recording, and the tape 100
Is continued until the end time A_e. 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. Then, when the recording of the program B on the tape 100 is completed, the programs A and B, whose broadcast times overlap, have been serially recorded on one tape 100. In this case, assuming that the capacity of the HDD necessary for recording data is the maximum capacity, the relationship between the start time A_s of the program A and the start time B_s of the program B is A_s = B_s, as shown in FIG. , End time A_ of program A
e and the end time B_e of the program B are A_e = B_e
That is, the case where two programs of the same length starting at the same time are recorded, and the total time of the two programs is equal to the recording time of the tape 100. As shown in FIG. 4, the capacity of the HDD for recording data is
Half of the maximum capacity of 0 can fulfill this function.

FIG. 5 shows another embodiment of recording and reproduction when recording a plurality of programs having different broadcast times. As in the embodiment shown in FIG. 3, the start time of the program A is A_s, the end time of the program A is A_e, the start time of the program B is B_s, and the program B is
Is set to B_e, and the broadcast time of program A is 30
And the broadcast time of the program B is 15 minutes. And
In this embodiment, A_s <B_s and A_e <B_
Suppose e. First, the user issues a command to record the programs A and B as described above through the user interface 300. Then, the program A whose broadcast start time is earlier is first 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, when the end time A_e of the program A comes, the recording of the program A on the tape 100 is terminated, and recording is started after the program A on the tape 100 is recorded from the beginning of the program B recorded on the HDD. Here, program B ends at time B_
Since the broadcast continues to e, it is necessary to continue recording on the HDD until then. That is, the end time A of the program A
_E to the end time B_e of the program B,
“Reading” for recording the program B recorded on the HDD on the tape 100 and “writing” for recording the program B being broadcast must be performed simultaneously.

Next, at the end time B_e of the program B, the recording of the program B on the HDD is ended, and the remaining portion of the program B recorded on the HDD is continuously recorded on the tape 100. Then, after recording the program B on the tape 100,
This means that the program A and the program B, whose broadcast times overlap, have been serially recorded on one tape. In this embodiment, it is sufficient that the HDD has a capacity capable of recording the program B having a broadcast time of 15 minutes.

Therefore, A_s <B_s and A_e <
Consider the case where the capacity of the HDD is the maximum at B_e. In FIG. 6, if program A is a program having a very short time and program B is a program having a very long time, it can be realized if there is an HDD having a capacity capable of recording program B having a broadcast time of 5 hours and 55 minutes. is there. That is, in such a situation, if the time of the program A is further shortened and the time of the program B is correspondingly longer, it is understood that an HDD having a capacity of up to one tape is required to realize this function. .

However, according to the "HDD behavior" shown in FIG. 6, the reproduction operation is performed during A_e to Y (reproduction end), and the reproduced data is simultaneously recorded on the tape. It is not necessary to leave the already-existing portion on the HDD. Therefore, simultaneous recording and reproduction on the HDD is performed by performing “reading” and “writing” in parallel, and performing the “writing” operation successfully on the data area that is no longer necessary, thereby saving the time of B_s to A_e. Of the program A and the program B
H is large enough to record the overlapped portion of the broadcast
With the DD, this function can be realized. Therefore, even when this ideal writing method is performed, the most HDD capacity is required when recording two programs of the same length starting at the same time as shown in FIG. This is the case when the total broadcast time of the book program is equal to the maximum recording time of the tape. Therefore, in both the case of FIG. 3 and the case of FIG. 5, this function can be realized if the capacity of the HDD for recording data is half of the maximum capacity of the tape.

At the present time, the capacity of D-VHS (registered trademark) having the largest capacity in a recording medium which can be easily replaced is 50 G.
B, the above-mentioned function can be realized if the HDD has about 25 GB.

As described above, a VTR using a tape-shaped recording medium
The method of simultaneous recording of two programs by combining the HDD and the HDD has been described. The HDD portion needs to be a medium that can be randomly accessed because of simultaneous recording and reproduction, and has a high reading speed and a high recording speed. On the other hand, V
Since there is no special requirement other than that the TR portion is a medium that can be easily replaced, the TR portion can be realized by using a disk medium such as a DVD instead of the tape-shaped recording medium described above.

Also, by having three or more tuners, increasing the capacity of the second recording medium, and improving the reading / writing speed of the second recording medium, the broadcasting time is overlapped in the above embodiment. What was recorded only for two programs can also be applied to three or more programs with overlapping broadcast times. For example, in the case of three programs whose broadcast time overlaps, this can be realized by recording one program on the first recording medium and recording the remaining two programs on the second recording medium.

Next, an embodiment of a recording and reproducing apparatus for recording a plurality of multiplexed programs will be described with reference to the drawings. First, FIG. 8 shows a case where one program A separated from a plurality of multiplexed programs is recorded on a first recording medium, and the remaining programs on which the program A is being recorded are separated on a second recording medium. FIG. 2 is a block diagram illustrating an example of a recording unit of a digital signal recording / reproducing device used when recording is performed on a recording medium. The basic configuration is the same as that shown in FIG. 1, but the multiplexed MPEG input from the tuner 1 or the external signal input unit 3
Is sent to the switch circuit unit 14 and then to the demultiplexing unit 15. Then, as shown in FIG. 7, the multiplexed TS is sent to the switch circuit unit 4 in a separated state. Then, in accordance with an instruction from the user interface 300, the first program to be recorded is sent to the tape recording signal processing unit 5, and the remaining programs are sent to the disk recording signal processing unit 7. Note that the reproducing unit may have the same configuration as in 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.
When recording serially on a book tape, programs A, B, C
Are all 30 minutes. First, a command for recording the programs A, B, and C as described above is input from the user to the recording device 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 programs B and C are recorded on the HDD in the state of the separated TS. A buffer is provided for each of the two programs B and C, and when the separated TS reaches, for example, 99% of the occupancy of each buffer, the TS is burst-recorded on the HDD. Thirty minutes later, when the recording of the program A on the tape 100 ends, 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. Also, the number of programs to be recorded may be two out of three. And
When the recording of the program C is completed 90 minutes after the start of the recording, the multiplexed and transmitted programs A, B, and C are serially recorded on one tape.

FIG. 10 shows one separated program A as the first program.
And the remaining program is recorded on the second recording medium in a multiplexed state while the program A is being recorded.
After the previous program A is recorded on the recording medium, the multiplexed remaining program is separated and connected to the first recording medium to record the remaining program. It is a block diagram which shows another example. The basic configuration is the same as that of FIG. 8, 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 multiplexed without separation. The signal is sent to the separation unit 15 and the disk recording signal processing unit 7. The multiplexed TS is separated from the signal sent to the multiplexing / demultiplexing unit 15 as shown in FIG. 7, and the TS of the desired program is recorded on the tape based on the information specified by the user from the user interface 300. The signal is sent to the signal processing unit 5.
The signal sent to the disk recording signal processing unit 7 is recorded in the HDD as multiplexed.

FIG. 11 shows a block diagram of the reproducing section. The basic configuration is the same as that of FIG. 2 except that the signal processed by the disk reproduction signal processing unit 12 is then sent to the demultiplexing unit 16 and the user interface 3
The point is that the TS of a desired program is separated from 00 on the basis of the information specified by the user and sent to the switch circuit unit 4 and the tape recording signal processing unit.

Also in the above-described embodiment, the case where three multiplexed programs A, B, and C are serially recorded on one tape in the order of program A, program B, and program C will be described with reference to FIG. I do. Assuming that the broadcast time of each of the programs A, B, and C is 30 minutes, when the user issues an instruction to record the programs A, B, and C as described above, the programs separated by the demultiplexer 15 Of program A on tape 1
Start recording at 00. At the same time, in this embodiment, 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 is completed, the signal recorded on the HDD is read, the program B is separated, and the recording of the program B from the HDD is started after the program A recorded on the tape 100. . Subsequently, when the recording of the program B on the tape ends, the signal recorded on the HDD is read again, the program C is separated, and the recording of the program C from the HDD after the program B recorded on the tape 100 is started. In addition,
The recording order of these programs is determined by the user interface 30.
It may be determined from 0 based on information specified by the user. Also, the number of programs to be recorded may be two out of three. When the recording of the program C is completed 90 minutes after the start of the recording, the multiplexed and transmitted programs A, B, and C are serially recorded on one tape.

As described above, in the method described with reference to FIG. 8 in which the multiplexed program is recorded in the HDD in a separated state, the HDD can be realized if the HDD has a capacity capable of recording the programs B and C. , B, and C, the capacity of the HDD is smaller than when the data is recorded on the HDD while being multiplexed. On the other hand, in the method described with reference to FIGS. 10 and 11 in which the program is multiplexed and recorded on the HDD, the input TS may be recorded on the HDD as it is.
Unlike the method of recording on the HDD in a separated state, it is not necessary to perform an operation of recording two program files at the same time. 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. Does not need to be a fast recording medium, and any recording medium may be used as long as the capacity is sufficient. On the other hand, since there is no particular requirement other than that the portion corresponding to the VTR is a recording medium that can be easily replaced, a disk medium such as a DVD may be used instead of a tape. (Second Invention) Next, an embodiment of a recording and reproducing apparatus for selecting and recording an optimum recording method by detecting the maximum transfer rate of a program to be recorded will be described with reference to the drawings. According to FIG. 12, the configuration is the same as that of FIG. 8, 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 14, and thereafter, the transfer rate detection is performed. It is sent to the unit 17. Here, when an instruction to record without down-conversion is issued by the user interface 300,
First, the maximum recording rate of the multiplexed TS is detected, for example, from the Maximum bit rate descriptor in the header. Then, the tape recording signal processing unit 5 performs a process according to an appropriate recording mode. The reproducing unit may have the same configuration as the reproducing unit shown in FIG.

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 present invention will be described. For example, programs A, B, and C multiplexed at 4 Mbps with a DVD recorder having a maximum recording rate of 10 Mbps.
Is recorded on one recording medium. in this case,
Since the total transfer rate of the three programs is 12 Mbps,
It cannot be recorded as multiplexed. So 1
Whether to down convert to 0Mbps or less and record.
It must be recorded separately. If the user interface instructs not to perform down-conversion, 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 recorder of 10 Mbps. 1
When 2 Mbps is detected, an instruction is given to the demultiplexer 15 to separate and record. As a result, a DVD disk on which three programs are recorded in a serially connected state 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 is 30 Mbps. Unable to record until. In this case, it is necessary to perform down conversion to 28.2 Mbps or less for recording or separate recording.

For example, when the user interface issues an instruction to perform recording so as not to perform down-conversion, the transfer rate detecting unit 17 detects the maximum recording rate of the multiplexed TS, and the maximum recording rate of this VTR. Transfer rate of 30 Mbps exceeding 28.2 Mbps
When s is detected, the multiplexing / demultiplexing unit 15 is instructed to separate and record the multiplexed program. Then, recording on the tape is performed in a state where the programs A, B, and C are separated. At this time, if there are six recording modes as shown in FIG.
Recording is possible in both the S mode and the STD mode. However, in D-VHS, recording is performed at a fixed recording rate. In this case, when the recording is performed in the HS mode, the amount of video and audio information does not change compared to the STD mode. Twice the capacity is required. The best mode for such a case, here ST
D mode is selected and recorded. Similarly, program B is recorded in STD mode because the transfer rate is 10 Mbps, and program C is recorded in LS2 mode because the transfer rate is 6 Mbps. As a result, a tape in which three programs are serially connected with a smaller capacity without down-conversion is completed. Next, for example, 13 Mbps, 13 Mbps, and 2 Mbps respectively in D-VHS
Consider a case where the programs A, B, and C multiplexed in the above are recorded on one recording medium. In this case, unlike the above example, the total transfer rate of the three programs is 28 Mbps and the D-VHS
Is below the maximum recording rate of 28.2 Mbps. In this case, the data may be recorded while being multiplexed as shown in FIG. 15, or may be recorded separately. However, in the case of recording in the multiplexed state, it is possible to record in the HS mode, that is, at a recording rate of 28.2 Mbps. Therefore, a total recording rate of 30 Mbps is required, which requires more capacity than recording three programs multiplexed. Therefore, unlike the case of FIG. 7, recording with multiplexing is possible with a smaller capacity. Therefore, when an instruction to record so as not to perform down-conversion and an instruction to record with the smallest capacity are issued by the user interface, the transfer rate detecting unit 17 detects the total transfer rate of the three programs. Further, the transfer rates when the three programs are separated are detected, the lowest recordable mode that can be recorded without down-conversion is selected, and the total of the recording rates is calculated. The transfer rate of each separated data is the maximum bitra
te descriptor or MPEG video layer, MP
It can be detected by referring to the bit rate index in the EG audio layer. Then, the two rates are compared, and recording is performed at a lower rate. As a result, a tape in which three programs are serially recorded with a smaller capacity without down-conversion is completed.

[0036]

As described above in detail, according to the recording / reproducing apparatus according to the present invention, the first recording medium is combined with the second randomly accessible recording medium that assists the first recording medium, and the first recording medium is duplicated. By temporarily recording the program on the second auxiliary recording medium mainly on the portion where the program is located, two programs can be simultaneously recorded, and the effect of being able to collectively record on one recording medium is achieved. In addition, the capacity of the second recording medium can be simultaneously recorded and reproduced on the HDD, and
By ideally overwriting the disk area, it is possible to realize the capacity with half the maximum capacity that can be recorded at a time on the first recording medium. Further, by temporarily recording the multiplexed TS on the second recording medium, it becomes possible to record a plurality of programs with a smaller capacity. Further, by detecting the transfer rate of the multiplexed program, the capacity can be reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of a recording unit of a recording / reproducing apparatus according to the present invention.

FIG. 2 is a block diagram showing one embodiment of a reproducing unit of the recording / reproducing apparatus according to the present invention.

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

FIG. 4 is a diagram showing a case where the HDD capacity of the recording / reproducing apparatus according to the present invention is the maximum.

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

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

FIG. 7 is a diagram comparing a case where recording is performed with a multiplexed TS as it is and a case where recording is performed with a separated TS in the recording / reproducing apparatus according to the present invention.

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

9 is a diagram showing an operation of the recording / reproducing apparatus according to the present invention in the embodiment shown in FIG.

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

FIG. 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 according to the present invention.

FIG. 12 is a block diagram showing an embodiment of a recording section according to the second invention of the recording / reproducing apparatus according to the present invention.

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

FIG. 14 shows a DV to which the recording / reproducing apparatus according to the present invention is applied.
FIG. 3 is a diagram illustrating HS recording modes and respective recording rates.

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

[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 Takayuki Sugawara 3-12 Moriyacho, Kanagawa-ku, Yokohama, Kanagawa, Japan Inside (72) Inventor Wataru Inaba 3-12-12 Moriyacho, Kanagawa-ku, Yokohama-shi, Kanagawa Prefecture Inside Victor Company (72) Inventor Seiji Higurashi 3--12 Moriyacho, Kanagawa-ku, Yokohama-shi, Kanagawa Japan Victor Co., Ltd. (72) Inventor Toshio Kuroiwa 3-12-12 Moriyacho, Kanagawa-ku, Yokohama-shi, Kanagawa Japan F-Term (reference) 5C018 FA00 FA03 HA04 HA08 5C052 AA01 AB03 CC06 CC11 DD04 DD07 5C053 FA21 FA23 GA11 GB06 GB37 JA21 KA08 LA06 5D044 AB07 CC09 DE03 DE12 DE96 GK05 GK08

Claims (4)

[Claims] When recording a plurality of programs having overlapping broadcast times, a first recording means for recording one of the plurality of programs, and temporarily storing a program other than the one program A second recording unit capable of performing random access for recording; and a reading unit for reading a program temporarily recorded by the second recording unit, wherein the first recording unit records the one program. A recording / reproducing apparatus, wherein after the program ends, a program other than the one program is read by the reading means and recorded by the first recording means. 2. A demultiplexer for separating a plurality of multiplexed programs to be distributed, wherein the demultiplexer separates the plurality of multiplexed programs from each other when recording the multiplexed programs. A first recording unit that records one program separated by the unit; a second randomly accessible recording unit that records a program other than the one program in a state separated by the separation unit; Reading means for reading a program recorded by the recording means, and after the first recording means finishes recording the one program, reads out programs other than the one program from the reading means, A recording / reproducing apparatus for recording by a first recording means. 3. A separating unit for separating a plurality of multiplexed and distributed programs, and a separating unit for separating the multiplexed and distributed programs from each other when recording the multiplexed and distributed programs. First recording means for recording one program separated by the unit, second randomly accessible recording means for recording a program other than the one program in a multiplexed state, and the second recording means Readout means for reading out a program recorded by the first readout means, after the first recording means has finished recording the one program, reads out a multiplexed program other than the one program from the readout means, A recording / reproducing apparatus which is separated by the separating section and recorded by the first recording means. 4. A demultiplexer for separating a plurality of programs multiplexed and distributed; a detecting means for detecting a maximum transfer rate of the plurality of programs multiplexed and distributed; First recording means for recording a plurality of programs to be multiplexed, random-accessible second recording means for temporarily recording the plurality of multiplexed and distributed programs, and the second recording means. And a reading means for reading out a program recorded by the recording means. When recording a plurality of programs multiplexed and distributed, the maximum transfer rate detected by the detecting means is If the recording rate does not exceed the recording rate of the first recording means, the plurality of programs multiplexed and distributed by the first recording means are recorded, and the maximum transfer detected by the detecting means is recorded. If the rate exceeds the recording rate of the first recording means or the maximum recording rate of the recording mode specified by the user,
Separating at least one program from the plurality of multiplexed and distributed programs by the first recording unit, and recording the remaining programs by the second recording unit; A recording / reproducing apparatus, wherein after the means has finished recording, the program recorded by the second recording means is read by the reading means and recorded by the first recording means.