JP3456601B2 - Video recording device, video reproducing device and method thereof - Google Patents

Description

Detailed Description of the Invention

[0001]

[Table of Contents] The present invention will be described in the following order. Industrial applications Conventional technology Problems to be Solved by the Invention (FIGS. 19 and 20) Means for Solving the Problems (FIGS. 1 to 18) Action (Figs. 1-18) Example (1) First embodiment (1-1) Overall Configuration of Example (FIG. 1) (1-2) Configuration of input signal processing unit (FIG. 2) (1-3) Configuration of output signal processing unit (FIG. 3) (1-4) Recording format (Figs. 4 and 5) (1-5) Operation of Example (FIGS. 1 to 5) (1-6) Effect of Example (FIG. 1) (2) Second embodiment (2-1) Overall Configuration of Example (FIG. 6) (2-2) Recording format (Figs. 7 and 8) (2-3) Operation of Example (FIGS. 6 to 8) (2-4) Effect of Example (FIG. 6) (3) Third embodiment (3-1) Configuration of Example (FIGS. 9 and 10) (3-2) Recording format (Figs. 11 and 12) (3-3) Operation of Example (FIGS. 9 to 12) (3-4) Effect of Example (FIGS. 9 and 10) (4) Another embodiment (FIGS. 13 to 18) The invention's effect

[0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video recording apparatus, a video reproducing apparatus and a method thereof, and is suitable for application to, for example, a digital video tape recorder mainly intended for general use.

[0003]

2. Description of the Related Art Conventionally, in a digital video tape recorder (hereinafter referred to as a digital VTR) mainly intended for general purposes other than business use, it is necessary to increase the recording efficiency of video signals in order to reduce the size. The digital video signal is compression-encoded and recorded / reproduced.
The compression algorithm is DCT (Discrete Cos).
ine Transform) and other orthogonal transform coding methods are used.

In the orthogonal transform coding method such as DCT, it is necessary to block the video signal input in the unit of 8 × 8 pixels for compression processing, and therefore the recording area of the video signal is 8 pixels. , And an integral multiple of 8 scan lines. For example, for a video system with 525 scanning lines (hereinafter referred to as 525 system), 480 lines are used as a recording area, and a video system with 625 scanning lines (hereinafter referred to as 625 system). ) About 576
The line portion is the recording area. As described above, in the tape format of the digital VTR mainly intended for general use, it is sufficient that the area displayed on the television screen is recorded. Therefore, all video signals are not recorded.

[0005]

By the way, a digital VTR mainly intended for such a general purpose has a digital image recording of a video signal, so that deterioration of image quality is caused by an analog VT.
Remarkably less than R. Therefore, this digital VT
If R can be used not only for general purposes but also for business purposes, it is considered that an inexpensive digital VTR for business purpose can be realized with a remarkably simple structure. However, since the digital VTR mainly intended for general use does not record all video signals as described above, there is a problem that it cannot be used as it is for commercial use such as medical use, industrial measurement or broadcasting.

For example, in a system for broadcasting business, depending on the broadcasting standard, 485 lines are used for the 525 system and 576 lines are used for the 625 system.
Since the number of scanning lines and the number of scanning lines corresponding to 1/2 are required and the above-mentioned digital VTR mainly intended for general use does not satisfy this requirement, it cannot be used. Also, in the system for broadcasting business, VITS provided in the vertical blanking period
(Vertical Interval Test Signal), VIR (Vertic
Since a test signal such as al Interval Reference) may be used, it is impossible to use a digital VTR mainly intended for general purpose of recording only an area displayed on a television screen. Similarly, for systems for medical use, industrial measurement, etc., since the information of the vertical blanking period may be used, it is impossible to use a digital VTR mainly for general purpose.

As one method for solving this problem, there is a method described in Japanese Patent Application No. 5-96850. In this method, as shown in FIG. 19, in the case of the 525 system, video information of 23 to 262 lines of the first field and 285 to 524 lines of the second field of the video signal is recorded in the video recording area, Half of 21, 22 and 263 lines of one field, half of 283 lines of second field, 284 and 525
By recording the video information of the line in the additional information recording area, 21 to 263 of the first field defined by the broadcasting standard can be obtained.
Half of the line and half of the 283 line of the second field ~
It is designed to record 525 lines of video information.

In this case, the scanning lines recorded in the additional information recording area are sampled and recorded every four pixels, and are adjacent to each other at 21 line, 22 line, 283 line and 284 line.
The scanning lines of the lines are recorded by a method suitable for interpolation processing at the time of reproduction, with the sampling phase shifted by two pixels. In the pixel data recorded at this time, only the luminance information is selected in consideration of the capacity of the additional information recording area, and the color difference information is not recorded.

In the case of the 625 system, as shown in FIG. 20, the video information of 23 to 310 lines of the first field and 335 to 622 lines of the second field of the video signal is recorded in the video recording area. By recording half the video information of 623 lines of 2 fields in the additional information recording area, 23 to 310 lines of the first field and half of the 335 lines to 623 lines of the second field defined by the broadcasting standard are recorded. It is designed to record.

As described above, in this method, when the number of scanning lines of the video information recorded in the video recording area on the recording medium does not satisfy the number of scanning lines of a predetermined broadcasting standard, the missing scanning line of the broadcasting standard is used. Mainly used for general purpose by recording the video information of the above in the additional information recording area and restoring the video signal of a predetermined broadcasting standard from the video information recorded in the video recording area and the additional information recording area on the recording medium during reproduction. The intended digital VTR can be used for broadcasting business.

However, since the digital VTR mainly intended for general use by this method does not record the information of the vertical blanking period in the video signal, the test signals such as VITS and VIR of the vertical blanking period are recorded as described above. It cannot be used for the broadcasting system used, the medical or industrial measurement system that uses the information of the vertical blanking period, etc., and there are still insufficient problems as a solution.

The present invention has been made in consideration of the above points, and proposes a video recording apparatus, a video reproducing apparatus, and a method thereof, which have a simple structure and can be used in a business that requires information on a vertical blanking period. Is what you are trying to do.

[0013]

In order to solve such a problem, according to the present invention, in a video recording apparatus 60 which digitally compresses and encodes a video signal S1 and records it on a recording medium, a vertical blanking period of the video signal S1 information S3, at different image recording area AR _V and the additional information recording area AR the video recording area sampling frequency the same as or first sampling frequency of an integral fraction of the AR information S2 which is recorded in the _V of _SB on the recording medium Sampling means 62 for sampling, and recording processing means 63 for converting the vertical blanking period information S3 sampled by the sampling means 62 into an array for recording in the additional information recording area AR _SB on the recording medium. acceptable to provide the door, place where it is impossible to record all the information of the video signal S1 to the video recording region AR _V on the recording medium , Of the vertical blanking period information S
3 is recorded in the additional information recording area AR _SB on the recording medium.

Further, in the present invention, in the video recording apparatus 1 (or 50, 60) for digitally compression-encoding the video signal S1 and recording it on the recording medium, the information S3 of the vertical blanking period in the video signal S1 is predetermined. Sampling means 5 (or 51, 6 for sampling at the sampling frequency
2) and information S3 of the vertical blanking period sampled by the sampling means 5 (or 51, 62),
Of the video recording area AR _V and the additional information recording area AR _SB which are different from each other on the recording medium, the additional information recording area AR
_When it is impossible to record all the information of the video signal S1 in the video recording area AR _V on the recording medium by providing the recording processing means 6 (or 52, 63) for converting into the array for recording on the _SB . , The vertical blanking period information S3 is divided,
Time-division recording is performed in the additional information recording area AR _SB on the recording medium.

Further, in the present invention, in the video recording apparatus 1 (or 50) for digitally compression-encoding the video signal S1 and recording it on the recording medium, the information S3 of the vertical retrace period of the composite system in the video signal S1 is color-coded. Sampling means 5 (or 51) for sampling at a sampling frequency that is an integral multiple of the subcarrier frequency, and vertical blanking period information S3 sampled by the sampling means 5 (or 51) are different from each other on the recording medium. acceptable to provide a recording processing means 6 for conversion into a recording sequence for on the additional information recording region AR _SB in the video recording region AR _V and the additional information recording region AR _SB (or 52), the image on the recording medium When it is not possible to record all the information of the video signal S1 in the recording area AR _V , all the vertical information in the color frame of the video signal S1 is recorded. The information S3 of the straight-back line period is time-divisionally recorded in the additional information recording area AR _SB on the recording medium in the order of the frames forming the color frame.

Further, in the present invention, in the video recording apparatus 50 (or 60) for digitally compression-encoding the video signal S1 and recording it on the recording medium, the information S3 of the vertical blanking period in the video signal S1 and the video signal concerned. Different video recording areas A on the recording medium in the predetermined broadcasting standard of S1
R _V and sampling means 51 (or 62) for sampling at a predetermined sampling frequency the information of the broadcast standard that cannot be recorded in the video recording area AR _SB of the additional information recording area AR _SB , and the sampling means 51.
The recording processing means 52 (for converting the information S3 of the vertical blanking period and the information of the broadcast standard sampled by (or 62) into an array for recording in the additional information recording area AR _SB on the recording medium ( Or 63), and if all the information of the video signal S1 cannot be recorded in the video recording area AR _V on the recording medium, the information S3 of the vertical blanking period
And the information of the broadcasting standard, the additional information recording area A on the recording medium.
Recorded in _RSB .

Further, in the present invention, the video signal S20
In a video reproducing apparatus 60 for reproducing a recording medium recorded by digital compression encoding, a different video recording area AR _V and additional information recording area A on the recording medium.
Video information reproducing means for reproducing the video recording area information S2 of the video signal S20 recorded on the AR _SB among R _SB 14
And the information S3 of the vertical blanking period of the video signal S20 recorded in the additional information recording area AR _SB on the recording medium is reproduced with the same reproduction clock as the reproduction clock of the video information reproduction means 14 or a reproduction clock divided by an integer. The video signal S20 is restored by adding the information S3 of the vertical blanking period reproduced by the additional information reproducing means 65 to the information S2 reproduced by the additional information reproducing means 65 and the video information reproducing means 14. The reproduction processing means 15 is provided.

Further, in the present invention, the video signal S20
In the video reproducing apparatus 1 (or 50) for reproducing the recording medium recorded by the digital compression encoding, the video recording area AR _V and the additional information recording area AR _SB which are different from each other on the recording medium. A video information reproducing means 14 for reproducing the information S2 of the composite video signal S20 recorded in AR _V , and a vertical return of the composite video signal S20 time-division recorded in the additional information recording area AR _SB on the recording medium. The additional information reproducing means 16 (or 53) for reproducing the line period information S3 with the reproduction clock of an integer multiple of the color subcarrier frequency, and the additional information reproducing means for the information S2 reproduced by the video information reproducing means 14. 16
(Or 53) information S of the vertical blanking period reproduced by
3 is added to the additional information recording area AR _SB on the recording medium from the arrangement at the time of recording to the original arrangement before recording to add the reproduction processing means 15 for restoring the video signal S20 of the composite system. I chose

Further, in the present invention, the video signal S20
In a video reproducing apparatus 60 for reproducing a recording medium recorded by digital compression encoding, a different video recording area AR _V and additional information recording area A on the recording medium.
A video information reproducing means 14 for reproducing the video recording area information S2 of the video signal component type recorded in the AR _V of R _SB, on the recording medium the additional information recording region AR
Component type video signal S time-division recorded on _SB
The information S3 of 20 vertical blanking periods is used as the video information reproducing means 1
No. 4 reproduction clock, the additional information reproduction means 65 which reproduces at the reproduction clock which is the same as the reproduction clock of 1 or an integral fraction, and the information S2 reproduced by the video information reproduction means 14 are reproduced by the additional information reproduction means 65. The information S3 of the vertical blanking period is returned from the array at the time of recording in the additional information recording area AR _SB on the recording medium to the original array before recording and added, and the component system is converted to the composite system to obtain the video signal S20. And the reproduction processing means 15 for restoring.

Further, in the present invention, the video signal S20
In a video reproducing apparatus 50 (or 60) for reproducing a predetermined recording medium recorded by digital compression coding, the relevant video is recorded in the different video recording area AR _V and additional information recording area AR _SB on the recording medium. Recording area AR
Video information reproducing means 14 for reproducing the information S2 of the video signal S20 recorded in _V , information S3 of the vertical blanking period of the video signal S20 recorded in the additional information recording area AR _SB on the recording medium, and the video Of the predetermined broadcasting standard of the signal S20, the additional information reproducing means 53 (for reproducing the information of the broadcasting standard recorded in the additional information recording area AR _SB which cannot be recorded in the video recording area AR _V on the recording medium) ( Or 65)
And the information S2 reproduced by the video information reproducing means 14.
In addition, the reproduction processing means 15 for restoring the video signal S20 by adding the information S3 of the vertical blanking period reproduced by the additional information reproducing means 53 (or 65) and the information of the broadcasting standard is provided.

[0021]

Therefore, in the present invention, in the video recording apparatus 60 for digitally compressing and coding the video signal S1 and recording it on the recording medium, the information S3 of the vertical blanking period in the video signal S1 is different from each other on the recording medium. Video recording area AR
_V and the additional information recording area AR _SB , the sampling means 62 for sampling at the sampling frequency which is the same as or equal to the sampling frequency of the information S2 recorded in the video recording area AR _V , and the sampling means 62. A recording processing means 63 for converting the sampled information S3 of the vertical blanking period into an array for recording in the additional information recording area AR _SB on the recording medium is provided, and the video recording area AR on the recording medium is provided. _When it is not possible to record all the information of the video signal S1 in _V , the information S3 of the vertical blanking period is added to the additional information recording area AR _SB on the recording medium.
Thus, even if all the information of the video signal S1 cannot be recorded in the video recording area AR _V on the recording medium, the information S3 of the vertical blanking period of the video signal S1 can be recorded on the recording medium. Can be recorded.

Further, in the present invention, in the video recording apparatus 1 (or 50, 60) for digitally compression-encoding the video signal S1 and recording it on the recording medium, the information S3 of the vertical blanking period in the video signal S1 is predetermined. Sampling means 5 (or 51, 6 for sampling at the sampling frequency
2) and information S3 of the vertical blanking period sampled by the sampling means 5 (or 51, 62),
Of the video recording area AR _V and the additional information recording area AR _SB which are different from each other on the recording medium, the additional information recording area AR
_When it is impossible to record all the information of the video signal S1 in the video recording area AR _V on the recording medium by providing the recording processing means 6 (or 52, 63) for converting into the array for recording on the _SB . , The vertical blanking period information S3 is divided,
Since the additional information recording area AR _SB on the recording medium is time-division recorded, the video recording area AR on the recording medium is recorded.
Even if all the information of the video signal S1 cannot be recorded in _V , the information S3 of the vertical blanking period of the video signal S1 can be recorded on the recording medium.

Further, in the present invention, in the video recording apparatus 1 (or 50) for digitally compression-encoding the video signal S1 and recording it on the recording medium, the information S3 of the vertical retrace period of the composite method in the video signal S1 is color-coded. Sampling means 5 (or 51) for sampling at a sampling frequency that is an integral multiple of the subcarrier frequency, and vertical blanking period information S3 sampled by the sampling means 5 (or 51) are different from each other on the recording medium. acceptable to provide a recording processing means 6 for conversion into a recording sequence for on the additional information recording region AR _SB in the video recording region AR _V and the additional information recording region AR _SB (or 52), the image on the recording medium When it is not possible to record all the information of the video signal S1 in the recording area AR _V , all the vertical information in the color frame of the video signal S1 is recorded. The information S3 of the straight-back line period is time-divisionally recorded in the additional information recording area AR _SB on the recording medium in the order of the frames forming the color frame, so that the video recording area AR _V on the recording medium is recorded. Signal S
Even if it is not possible to record all the information of 1, the information S3 of the vertical blanking period of the video signal S1 can be recorded on the recording medium, and the information of the vertical blanking period at the time of reproducing the video signal S1 can be recorded. The color framing of S3 can be taken.

Further, in the present invention, in the video recording apparatus 50 (or 60) for digitally compression-encoding the video signal S1 and recording it on the recording medium, information S3 of the vertical blanking period in the video signal S1 and the video signal Different video recording areas A on the recording medium in the predetermined broadcasting standard of S1
R _V and sampling means 51 (or 62) for sampling at a predetermined sampling frequency the information of the broadcast standard that cannot be recorded in the video recording area AR _SB of the additional information recording area AR _SB , and the sampling means 51.
The recording processing means 52 (for converting the information S3 of the vertical blanking period and the information of the broadcast standard sampled by (or 62) into an array for recording in the additional information recording area AR _SB on the recording medium ( Or 63), and if all the information of the video signal S1 cannot be recorded in the video recording area AR _V on the recording medium, the information S3 of the vertical blanking period
And the information of the broadcasting standard, the additional information recording area A on the recording medium.
By that be recorded in R _SB, even if the image recording area AR _V on the recording medium can not record all the information of the video signal S1, the image signal S onto the recording medium
Information S3 of the vertical blanking period of 1 and the video recording area AR _V
It is possible to record information of a broadcasting standard that could not be recorded in.

Further, in the present invention, the video signal S20
In a video reproducing apparatus 60 for reproducing a recording medium recorded by digital compression encoding, a different video recording area AR _V and additional information recording area A on the recording medium.
Video information reproducing means for reproducing the video recording area information S2 of the video signal S20 recorded on the AR _SB among R _SB 14
And the information S3 of the vertical blanking period of the video signal S20 recorded in the additional information recording area AR _SB on the recording medium is reproduced with the same reproduction clock as the reproduction clock of the video information reproduction means 14 or a reproduction clock divided by an integer. The video signal S20 is restored by adding the information S3 of the vertical blanking period reproduced by the additional information reproducing means 65 to the information S2 reproduced by the additional information reproducing means 65 and the video information reproducing means 14. Since the reproduction processing means 15 is provided, it is not possible to record all the information of the video signal S1 in the video recording area AR _V on the recording medium, so that the additional information recording area AR _SB on the recording medium is recorded. Information S3 of the vertical blanking period of the recorded video signal S1 can be reproduced.

Further, in the present invention, the video signal S20
In the video reproducing apparatus 1 (or 50) for reproducing the recording medium recorded by the digital compression encoding, the video recording area AR _V and the additional information recording area AR _SB which are different from each other on the recording medium. A video information reproducing means 14 for reproducing the information S2 of the composite video signal S20 recorded in AR _V , and a vertical return of the composite video signal S20 time-division recorded in the additional information recording area AR _SB on the recording medium. The additional information reproducing means 16 (or 53) for reproducing the line period information S3 with the reproduction clock of an integer multiple of the color subcarrier frequency, and the additional information reproducing means for the information S2 reproduced by the video information reproducing means 14. 16
(Or 53) information S of the vertical blanking period reproduced by
3 is added to the additional information recording area AR _SB on the recording medium from the arrangement at the time of recording to the original arrangement before recording to add the reproduction processing means 15 for restoring the video signal S20 of the composite system. Since it is impossible to record all the information of the video signal S1 in the video recording area AR _V on the recording medium, the vertical direction of the video signal S1 recorded in the additional information recording area AR _SB on the recording medium is set. The information S3 of the blanking period can be reproduced, and the color framing of the information S3 of the vertical blanking period can be taken.

Further, in the present invention, the video signal S20
In a video reproducing apparatus 60 for reproducing a recording medium recorded by digital compression encoding, a different video recording area AR _V and additional information recording area A on the recording medium.
A video information reproducing means 14 for reproducing the video recording area information S2 of the video signal component type recorded in the AR _V of R _SB, on the recording medium the additional information recording region AR
Component type video signal S time-division recorded on _SB
The information S3 of 20 vertical blanking periods is used as the video information reproducing means 1
No. 4 reproduction clock, the additional information reproduction means 65 which reproduces at the reproduction clock which is the same as the reproduction clock of 1 or an integral fraction, and the information S2 reproduced by the video information reproduction means 14 are reproduced by the additional information reproduction means 65. The information S3 of the vertical blanking period is returned from the array at the time of recording in the additional information recording area AR _SB on the recording medium to the original array before recording and added, and the component system is converted to the composite system to obtain the video signal S20. By providing the reproduction processing means 15 for restoring the video signal S1, the video signal S1 is added to the video recording area AR _V on the recording medium.
Since it is not possible to record all the information of the video signal S, the video signal S recorded in the additional information recording area AR _SB on the recording medium is recorded.
The information S3 of one vertical blanking period can be reproduced.

Further, in the present invention, the video signal S20
In a video reproducing apparatus 50 (or 60) for reproducing a predetermined recording medium recorded by digital compression coding, the relevant video is recorded in the different video recording area AR _V and additional information recording area AR _SB on the recording medium. Recording area AR
Video information reproducing means 14 for reproducing the information S2 of the video signal S20 recorded in _V , information S3 of the vertical blanking period of the video signal S20 recorded in the additional information recording area AR _SB on the recording medium, and the video Of the predetermined broadcasting standard of the signal S20, the additional information reproducing means 53 (for reproducing the information of the broadcasting standard recorded in the additional information recording area AR _SB which cannot be recorded in the video recording area AR _V on the recording medium) ( Or 65)
And the information S2 reproduced by the video information reproducing means 14.
In addition, the reproduction processing means 15 for adding the information S3 of the vertical blanking period reproduced by the additional information reproducing means 53 (or 65) and the information of the broadcasting standard to restore the video signal S20 is provided. As a result, all the information of the video signal S1 cannot be recorded in the video recording area AR _V on the recording medium, so that the additional information recording area AR _SB on the recording medium is recorded.
It is possible to reproduce the information S3 of the vertical blanking period of the video signal S1 and the information of the broadcast standard recorded in (1).

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

(1) First Embodiment (1-1) Overall Configuration of Embodiment In FIG. 1, reference numeral 1 designates a video recording / reproducing apparatus composed of a digital VTR mainly intended for general use. Of S1, the video information displayed on the screen is recorded in the video recording area by the component method, and the information of the vertical blanking period is recorded in the additional information recording area by the composite method.

The video signal S1 input to the video recording / reproducing apparatus 1 is converted into a digital signal by the input signal processing section 2. At this time, the video information S2 recorded in the video recording area of the video signal S1 converted into the digital signal.
(That is, the video information displayed on the screen) is block-coded by the compression-encoding block 3 for every 8 pixels × 8 lines, for example, and compression-encoded by the DCT or the like, and as a result, it can be recorded on the tape. The data S4 compressed to a predetermined data amount is output to the error correction code adding section 4.

On the other hand, the information S3 recorded in the additional information recording area in the video signal S1 converted into the digital signal.
(That is, the information of the vertical blanking period) is sampled by the recording data sampling unit 5 at a predetermined sampling frequency, and the resulting data S5 is output to the additional information recording processing unit 6. The data S5 is converted into a predetermined data array by the additional information recording processing section 6 so that it can be recorded in the additional information recording area on the tape, and the resulting data S6 is output to the error correction code adding section 4. .

An error correction code is added to the data S4 and S6 by the error correction code adding unit 4, and the resulting recording data S7 is output to the channel coding unit 7. The recording data S7 is recorded and encoded by the channel coding unit 7 so that it can be recorded on the magnetic tape, and the resulting recording data S8 is output to the recording amplifier 8 where it is converted into a recording signal S9 and then the tape is recorded. It is supplied to the magnetic head of the transport 9. In this way, the video recording / reproducing apparatus 1 can record the video information on the screen of the video signal S1 in the video recording area on the magnetic tape, and the information of the vertical blanking period of the video signal S1 on the magnetic tape. It can be recorded in the additional information recording area above.

On the other hand, when the video recording / reproducing apparatus 1 reproduces the recorded information on the magnetic tape, the reproducing signal S10 obtained by the magnetic head of the tape transport 9 is amplified by the reproducing amplifier 10, The resulting reproduction signal S11 is output to the data extraction unit 11. The data extraction unit 11 generates a reproduction clock from the reproduction signal S11 and, based on this reproduction clock, reproduces the reproduction data S11 from the reproduction signal S11.
12 is extracted and output to the channel decoding unit 12.

The reproduced data S12 is converted by the channel decoding unit 12 from the data encoded for magnetic recording into digital data before the channel coding, and the resulting reproduced data S13 is the error correction processing unit. It is input to 13 and subjected to error correction processing.
At this time, the reproduction data S14 reproduced from the video recording area
Is input to the compression encoding block 14, is decoded into the original digital video information S15 from the compressed state, and is output to the data reproduction processing unit 15.

On the other hand, the reproduction data S16 reproduced from the additional information recording area is input to the additional information reproduction processing section 16, where the information S17 of the vertical blanking period recorded in the additional information recording area is extracted. After that, the data reproduction processing unit 1
5 is output. The data reproduction processing unit 15 restores the digital video information S15 obtained from the video recording area and the vertical blanking period information S17 obtained from the additional information recording area to the state before recording based on the color frame information at the time of recording. The digital video signal S18 obtained as a result is output to the output signal processing unit 17. The digital video signal S18 is converted into an analog signal by the output signal processing unit 17 based on the reproduction synchronization signal S19 input from the outside. In this way, the reproduced video signal S20 to which the information of the vertical blanking period is added is output from the output signal processing unit 17.

The output signal processing section 17 also detects a color frame from the input reproduction synchronizing signal S19 and outputs a reproduction color frame synchronizing signal S21 to the reproduction color frame comparator 18 as a result. The reproduction color frame comparator 18 compares the phases of the reproduction color frame information S22 obtained from the additional information reproduction processing unit 16 and the reproduction color frame synchronization signal S21, and outputs the servo information S23 to the tape transport 9. As a result, the tape transport 9 can synchronize the reproduced color frame with the color frame of the reproduction synchronization signal S19 based on the servo information S23. In this way, the video recording / reproducing apparatus 1 synchronizes the video information recorded in the video recording area on the screen and the information of the vertical blanking period recorded in the additional information recording area with the reproduction synchronization signal S19. It is designed to be playable.

(1-2) Configuration of Input Signal Processing Unit Here, the composite type video signal S1 input to the input signal processing unit 2 is, as shown in FIG. Recording clock generators 21, 22
And input to the sampling sequencer 23,
It is input to one end of the switching switch 24.

The recording clock generator 21 has a predetermined frequency (for example, 13.5 [MH] based on the input video signal S1.
z]), and outputs the sampling clock S30 to the analog digital converters (A / D) 25, 26, the clock selector 28, and the compression encoding block 3. Similarly, the recording clock generator 22 is based on the input video signal S1 and is an integral multiple of the color subcarrier frequency (for example, four times 18.318 [MHz]).
The sampling clock S31 is generated, and the sampling clock S31 is output to the clock selector 28.

The sampling sequencer 23 detects the video information recorded in the video recording area and the information recorded in the additional information recording area from the input video signal S1, and generates the control signal S32 based on this. Clock selection section 2
8. The operations of the compression coding block 3 and the recording data sampling unit 5 are switched. Further, the sampling sequencer 23 generates recording color frame information S33 based on the video signal S1 and outputs it to the additional information recording processing section 6. The decoder 20 converts the inputted composite video signal S1 into a component video signal,
BY signal S34, RY signal S35, and Y signal S36
To generate.

If the input video signal S1 is video information recorded in the video recording area, the switching switch 2
4 is switched to the decoder 20 side, and the BY signal S34,
The R-Y signal S35 and the Y signal S36 are input to the analog digital converters (A / D) 25 to 27, respectively.
The BY signal S34 and the RY signal S35 are the sampling clock S3 from the recording clock generator 21, respectively.
Based on 0, it is converted into digital data by the analog digital converters 25 and 26, and the resulting BY data S37 and RY data S38 are output to the compression encoding block 3.

The Y signal S36 is sent to the clock selection unit 28.
Is converted into digital data by the analog digital converter 27 based on the sampling clock S30 from
The Y data S39 obtained as a result is output to the compression encoding block 3. The BY data S37, the RY data S38, and the Y data S39 thus converted into digital data are compression-encoded by the compression-encoding block 3 based on the sampling clock S30. The obtained digital data S4 is output to the error correction code adding section 4 as described above.

On the other hand, when the input video signal S1 is the information recorded in the additional information recording area, the switching switch 24 is switched to the video signal S1 side, and the composite type video signal S1 is converted into the analog digital converter 27. Entered in. The video signal S1 is converted into digital data based on the sampling clock S31 from the clock selector 28, and the additional information data S4 obtained as a result of this conversion.
0 is output to the recording data sampling unit 5. The additional information data S40 is subjected to predetermined sampling based on the sampling clock S31 input from the clock selection unit 28, and the resulting data S5 is output to the additional information recording processing unit 6.

The additional information recording processing unit 6 applies a predetermined data array to the data S5 based on the recording color frame information S33 from the sampling sequencer 23, and the resulting data S6 is added to the error correction code adding unit as described above. Output to 4. Here, the video recording / reproducing apparatus 1 converts the data S5 into a predetermined data array based on the recording color frame information S33 as described above, so that the color frame of the composite system reproduced video signal S20 is reproduced at the time of reproduction. It is designed so that it can be synchronized with the color frame.

In this way, the video information of the video signal S1 that appears on the screen is converted from the composite method into component-type digital data and recorded in the video recording area on the magnetic tape. On the other hand, the information of the vertical blanking period in the video signal S1 is converted into digital data in the composite system and recorded in the additional information recording area on the magnetic tape.

(1-3) Configuration of Output Signal Processing Unit As shown in FIG. 3, the reproduction synchronizing signal S19 input from the outside to the output signal processing unit 17 has an encoder 30 and a reproduction clock inside the output signal processing unit 17. It is input to the generators 31, 32 and the sampling sequencer 33. The reproduction clock generator 31 has a predetermined frequency (for example, 13.5) similar to that of the recording clock generator 21 based on the reproduction synchronization signal S19.
A sampling clock S50 of [MHz]) is generated, and the sampling clock S50 is output to the digital / analog converters (D / A) 34 and 35, the clock selection unit 37, and the compression coding block 14. Also, the reproduction clock generator 32 generates a sampling clock S51 having an integral multiple (for example, four times 14.318 [MHz]) of the color subcarrier frequency similar to that of the recording clock generator 22 based on the reproduction synchronization signal S19. Sampling clock S51
Is output to the clock selection unit 37.

The sampling sequencer 33 reproduces the video information recorded in the video recording area (that is, the video information displayed on the screen) and the information recorded in the additional information recording area (that is, the information of the vertical blanking period). The timing of switching to and from the reproduction is detected from the reproduction synchronization signal S19, and the control signal S52 based on this is generated to generate the clock selection unit 3
7. The operations of the switching switches 38 to 41, the compression coding block 14 and the additional information reproduction processing section 16 are switched.
Further, the sampling sequencer 33, based on the reproduction synchronization signal S19 as described above, reproduces the reproduction color frame synchronization signal S.
21 is generated and output to the reproduction color frame comparator 18.

The reproduction data S14 reproduced from the video recording area is input to the compression coding block 14 as described above, and is restored to the original digital video information based on the sampling clock S50, and the data is reproduced. It is output to the processing unit 15. The component main formula BY data S53, R-input to the data reproduction processing unit 15
The Y data S54 and the Y data S55 are input to the digital analog converters (D / A) 34 to 36 of the output signal processing unit 17 via the switching switches 38 to 40, respectively.

BY data S53 and RY data S5
4 is converted into analog data by digital analog converters (D / A) 34 and 35 based on the sampling clock S30 from the reproduction clock generator 31, and the BY signals S56 and R obtained as a result are converted. The −Y signal S57 is output to the encoder 30. Similarly, the Y data S55 is based on the sampling clock S50 from the clock selection unit 37, and the digital analog converter (D
/ A) 36 converts into analog data, and the Y signal S58 obtained as a result is output to the encoder 30. The encoder 30 converts the component type BY signal S56, the RY signal S57, and the Y signal S58 into the composite type. The video information recorded in the video recording area obtained as a result is output from the output signal processing unit 17 via the switching switch 41 switched to the encoder 30 side by the control signal S52.

On the other hand, the reproduction data S16 reproduced from the additional information recording area has the additional information reproduction processing section 1 as described above.
6, the additional information data S59 (that is, the information of the vertical blanking period) is extracted based on the color frame information at the time of recording by the sampling clock S51 from the clock selection unit 37, and the data reproduction processing unit. It is output to 15. This composite type additional information data S5
9 is input to the digital analog converter (D / A) 36 of the output signal processing unit 17 via the switching switch 40 of the data reproduction processing unit 15. At this time, the switching switches 38, 39 are respectively provided with predetermined fixed value generators 45, 4
Then, the digital analog converter (D / A) 34, 35 outputs a fixed value (for example, a level at which no color appears on the screen).

The additional information data S59 is converted into analog data by the digital / analog converter (D / A) 36 based on the sampling clock S51 from the clock selector 37. The information recorded in the additional information recording area obtained as a result is output from the output signal processing unit 17 via the switching switch 41 switched to the digital analog converter (D / A) 36 side by the control signal S52. To be done.

The image information recorded on the image recording area on the screen in this manner is reproduced from the component type digital data to the composite type analog signal. On the other hand, the information of the vertical blanking period recorded in the additional information recording area is reproduced from the composite type digital data to the composite type analog signal. Thus, in the video recording / reproducing apparatus 1, the reproduction video signal S in which the information of the vertical blanking period is added to the video information displayed on the screen.
20 is output from the output signal processing unit 17.

(1-4) In the recording format video recording / reproducing apparatus 1, as shown in FIG.
The video information displayed on the screen consisting of 23 to 262 lines and 285 to 524 lines of each frame in the 25 system video signal S1 is
As described above, based on the sampling clock S30, the analog digital converters (A / D) 25 to 27 convert the digital data into the component type digital data, and then the compression encoding block 3 similarly samples the sampling clock S30.
Based on the above, compression processing is performed to 720 samples per line.

The video information displayed on this screen is sequentially recorded so as to form a color frame in the video recording area AR _V on the magnetic tape as shown in FIG. That is, in the video recording area AR _V1 , video information displayed on the screen of the color first frame is recorded, and in the video recording area AR _V2 ,
The video information displayed on the screen of the color second frame is recorded, and this is repeated in order. At this time, 23 to 262 lines and 285 to 524 lines are recorded in this order in each video recording area AR _V.

On the other hand, as shown in FIG. 4, 17 to 20 lines of each frame of the 525 type video signal S1
The information of the vertical blanking period consisting of lines to 283 lines is converted into digital data of the composite method by the analog digital converter (A / D) 27 based on the sampling clock S31 as described above, and then the recording data sampling is performed. Similarly, in section 5, 768 samples are sampled per line based on the sampling clock S31.

The amount of information in this vertical blanking period is 768 per frame when one sample is sampled at 8 bits.
Sample x 8 lines = 6144 bytes, all 1
It cannot be collectively recorded in the additional information recording area AR _SB of the frame. For this reason, the video recording / reproducing apparatus 1 divides the information of the vertical retrace line period of 16 lines for the first and second color frames and divides the additional information recording area AR line by line.
Record on _SB . At this time, when the video recording / reproducing apparatus 1 reproduces the information of the vertical blanking period, the information of the vertical blanking period of the first color frame and the information of the vertical blanking period of the second color frame are provided so that color framing can be performed. Are recorded alternately.

That is, in the video recording / reproducing apparatus 1, as shown in FIG. 5, the additional information recording processing section 16 arranges the information of the vertical blanking period, and the information of the vertical blanking period of 8 lines of the first color frame is arranged. Divided into additional information recording areas AR _SB1 , AR _SB3 , AR _SB5 , AR _SB7 , A
_{R SB9, AR SB11, AR SB13} , AR SB15 recorded on a color second line by line the additional information recording region by dividing the information in the vertical blanking interval of 8 lines of the frame AR _SB2, A
_{R SB4, AR SB6, AR SB8} , AR SB10, AR SB12, A
It is recorded in the R _SB14, AR _SB16. In this way, in the video recording / reproducing apparatus 1, the information of the vertical blanking period of 16 lines including the first and second color frames is recorded in 16 frames on the magnetic tape in a time division manner.

By the way, when the recording is performed in this way, the information of the vertical blanking period is discretely recorded, but the information of the vertical blanking period is not the information that constantly changes. For example, the information of the vertical blanking period can be restored as it was. Also like this color 1st
By alternately recording the information of the vertical blanking periods of both the second and second frames, the video recording / reproducing apparatus 1 can perform color framing during reproduction.

In this way, the video recording / reproducing apparatus 1 is adapted to record the signal of the vertical blanking period in the additional information recording area AR _SB on the magnetic tape in a time division manner. The additional information recording area information of recorded vertical blanking interval AR _SB is restored every time the additional information reproduced by the processing unit 16 connexion additional information recording area AR _SB Play 16 frames during reproduction.
The information of the restored vertical blanking period is added to the video information reproduced from the video recording area AR _V by the data reproduction processing unit 15.

(1-5) Operation of the embodiment In the above configuration, the composite type video signal S1
Of the video information displayed on the screen (that is, the information of lines 23 to 262 and 285 to 524), the input signal processing unit 2 is based on the sampling clock S30 of a predetermined frequency.
Is converted into component type digital data with
After being compressed by the compression-encoding block 3, they are sequentially recorded so as to form a color frame in each video recording area AR _V on the magnetic tape. (Figs. 4 and 5)

On the other hand, as shown in FIG. 4, information of the vertical blanking period (that is, the information of the vertical blanking period in the composite video signal S1).
Information of 17 lines to 20 lines and 280 lines to 283 lines) is converted into digital data by the input signal processing unit 2 in the composite system based on the sampling clock S31 which is an integral multiple of the color subcarrier frequency, and the recorded data is recorded. It is output to the sampling unit 5. The recording data sampling unit 5 similarly performs sampling clock S3.
Based on 1, the information of the vertical blanking period converted into this digital data is sampled at 768 samples per line.

The information of the vertical blanking period sampled in this way is subjected to data arrangement processing by the additional information recording processing section 6 based on the recording color frame information S33 as shown in FIG. Each additional information recording area AR
_SB records one line at a time. At this time the first color
The information of the vertical blanking period of the frame and the information of the vertical blanking period of the second color frame are alternately recorded on the magnetic tape. That is, the video recording / reproducing apparatus 1 divides the information of the vertical blanking period of one frame, and records (time-division recording) line by line in the additional information recording area AR _SB .

On the other hand, during reproduction, the video information recorded in each video recording area AR _V is reproduced by the tape transport 9 and restored by the compression coding block 14. On the other hand, the information of the vertical blanking period recorded in each additional information recording area AR _SB is also reproduced by the tape transport 9 and converted into the original array by the additional information reproduction processing unit 16. At this time, the information of the vertical blanking period is
Since the time-division recording is performed on the magnetic tape as described above, the additional information recording area AR _SB for 16 frames is restored each time it is reproduced. The information of the restored vertical blanking period is added to the video information reproduced from the video recording area AR _V by the data reproduction processing unit 15, and converted into the analog reproduction video signal S20 by the output signal processing unit 17.

In this way, the video recording / reproducing apparatus 1 records the video information of the video signal S1 displayed on the screen in the video recording area AR _V in the same manner as in the conventional case at the time of recording, and the conventional video recording area AR _V displays the video information. The information of the vertical blanking period that could not be recorded because it does not fill the entire area of the signal S1 is recorded in the additional information recording area AR _SB on the magnetic tape. Also, the video recording / reproducing apparatus 1
During reproduction, the information of the vertical blanking period recorded in the additional information recording area AR _SB is restored, and is added to the image information displayed on the screen restored from the image recording area AR _V to reproduce the reproduced video signal S.
Play 20.

As a result, the video recording / reproducing apparatus 1 has the VITS and V in the vertical blanking period as in the conventional analog VTR.
It can also be used in a system for broadcasting service that requires a test signal such as IR, a system for medical use or industrial measurement that requires information on the vertical blanking period, and the like. Further, since the video recording / reproducing apparatus 1 and the conventional digital VTR are compatible with each other in the video recording area AR _V , recording / reproducing can be performed mutually. Further, since the information in the additional information recording area AR _SB recorded by the video recording / reproducing apparatus 1 cannot be reproduced by the conventional digital VTR, the additional information recording area AR _SB
The video recording / reproducing apparatus 1 can be used for applications in which information confidentiality is required for the above information. Further, the video recording / reproducing apparatus 1 alternately records the information of the vertical blanking periods of both the color first and second frames so as to form a color frame, so that the color of the composite video signal S20 of the composite system is reproduced at the time of reproduction. You can take framing.

(1-6) Effects of the Embodiments According to the above configuration, the recording data sampling unit 5 for sampling the information of the vertical blanking period and the predetermined data array so that the information of the vertical blanking period can be recorded. By providing the additional information recording processing unit 6 for performing the above, the information of the vertical blanking period can be recorded in the additional information recording area AR _SB with a simple structure, and the additional information reproducing processing unit for extracting the information of the vertical blanking period is also provided. 1
By providing 6, the information of the vertical blanking period can be reproduced from the additional information recording area AR _SB with a simple structure, and thus the video recording / reproducing apparatus 1 can be used for broadcasting, medical, or industrial measurement systems. Can be used for

(2) Second Embodiment (2-1) Overall Configuration of the Embodiment In FIG. 6, in which parts corresponding to those in FIG. Others,
In the broadcast standard, video information that cannot be recorded in the video recording area is recorded in the additional information recording area. In the case of this embodiment, the video recording / reproducing apparatus 50 has the same configuration as the first embodiment except for the recording data sampling unit 51, the additional information recording processing unit 52 and the additional information reproduction processing unit 53.

In the video signal S1 converted into a digital signal by the input signal processor 2, the information S60 recorded in the additional information recording area (that is, the information of the vertical blanking interval and the video information of the broadcast standard) is recorded data sampling. The data S61 obtained by sampling at a predetermined sampling frequency in the unit 51 is obtained as the additional information recording processing unit 52.
Is output to. The data S61 is converted into a predetermined data array by the additional information recording processing section 52 so that it can be recorded in the additional information recording area on the tape, and the resulting data S62 is output to the error correction code adding section 4. . As a result, like the first embodiment, the information of the vertical blanking period and the video information of the broadcasting standard can be recorded in the additional information recording area.

The reproduction data S63 reproduced from the additional information recording area is input to the additional information reproduction processing unit 53, where the information of the vertical blanking period and the video information S64 of the broadcast standard recorded in the additional information recording area. Is extracted and then output to the data reproduction processing unit 15. As a result, the reproduced video signal S20 to which the information of the vertical blanking period and the video information of the broadcast standard are added is output signal processing unit 17 as in the first embodiment.
Is output from.

(2-2) Recording format As shown in FIG. 7, the input video signal S1 of the 525 system is input.
Of the 23 to 262 lines and 285 to 524 lines of each frame, the video information displayed on the screen is based on a predetermined sampling frequency, as in the first embodiment.
After being converted into component type digital data by, the data is compressed by compression coding block 3 to 720 samples per line.

The video information displayed on this screen is sequentially recorded so as to form a color frame in the video recording area AR _V on the magnetic tape as shown in FIG. That is, in the video recording area AR _V1 , video information displayed on the screen of the color first frame is recorded, and in the video recording area AR _V2 ,
The video information displayed on the screen of the color second frame is recorded, and this is repeated in order. At this time, 23 to 262 lines and 285 to 524 lines are recorded in this order in each video recording area AR _V.

On the other hand, as shown in FIG. 7, 17 to 20 lines of each frame of the 525 type video signal S1
The information on the vertical blanking period consisting of lines to 283 lines is
Similar to the embodiment, based on the sampling frequency which is an integral multiple of the color subcarrier frequency, it is converted into digital data of the composite system in the input signal processing unit 2 and then sampled into 768 samples per line in the recording data sampling unit 51. It

In the case of this embodiment, since the video information which cannot be recorded in the video recording area AR _V of the broadcast standard is recorded in the additional information recording area AR _SB , the information of the vertical blanking period is added as in the first embodiment. One line cannot be recorded in the information recording area AR _SB . Therefore, the video recording / reproducing apparatus 50
Divides the information of the vertical blanking period of 1 line into 3
Each line is recorded in the additional information recording area AR _SB .

That is, as shown in FIG. 8, in the video recording / reproducing apparatus 50, the additional information recording processing section 52 performs the array processing of the information of the vertical blanking period, and the vertical blanking of 16 lines including the first and second color frames is performed. Line period information is recorded in 16 × 3 = 48 frames in time division. In this case, as in the first embodiment, the additional information recording area A of the color first frame on the magnetic tape is used.
The R _SB, color information of the first frame of the vertical blanking period is recorded, the additional information recording region AR _SB color second frames on the magnetic tape, information on the vertical blanking interval of the color second frame Will be recorded. As a result, the video recording / reproducing device 50 can perform color framing during reproduction.

On the other hand, as shown in FIG. 7, as for the video information of 21 to 22 lines, half of 263 lines, half of 283 lines to 284 lines and 525 lines of the broadcasting standard, only the Y signal is selected, and the input signal is selected. After being converted into digital data by the processing unit 2, one line is sampled by the recording data sampling unit 51 every 4 pixels, and the adjacent 21 and 22 lines, 283 and 284 lines have sampling phases. It is shifted by 2 pixels and sampled.

The broadcasting standard sampled in this way
21 to 22 lines, half of 263 lines, half of 283 lines ~
The video information of 284 lines and 525 lines is all recorded in one additional information recording area AR _SB as shown in FIG. (That is, the video information of the broadcast standard is not recorded in a time-division manner like the information of the vertical blanking period, but is entirely recorded in one frame.) In this way, the video recording / reproducing apparatus 50 can perform the vertical blanking period. Additional information recording area AR on magnetic tape by time division of information
_{At the same time as} being recorded in the _SB , video information of the broadcast standard that is not recorded in the video recording area AR _V is recorded in the additional information recording area AR _SB .

The information of the vertical blanking period recorded in the additional information recording area AR _SB is added to the additional information reproduction processing unit 5 during reproduction.
3, the additional information recording area AR _SB is restored each time 48 frames are reproduced. On the other hand, video information of a broadcasting standard that has been recorded in the additional information recording region AR _SB is restored each time the play by connexion additional information recording area AR _SB to the additional information reproducing unit 53 at the time of reproduction. The restored vertical blanking period information and the broadcast standard video information are added to the video information reproduced from the video recording area AR _V by the data reproduction processing unit 15.

(2-3) Operation of the embodiment In the above configuration, the composite type video signal S1
Of the above, the video information displayed on the screen is converted into component type digital data in the same manner as in the first embodiment, and after compression processing is performed in order to form a color frame in each video recording area AR _V on the magnetic tape. It will be recorded.
(Figs. 7 and 8)

On the other hand, as shown in FIG. 7, the information of the vertical retrace line period in the composite type video signal S1 is converted into the composite type digital data as in the first embodiment, and then the recording data sampling section is used. At 51, 768 samples are sampled per line. As shown in FIG. 8, the information of the vertical blanking period is divided into three lines for each line by the additional information recording processing section 52 and recorded in the additional information recording area AR _SB for each ⅓ line. At this time, the information of the vertical blanking period of the color first frame and the color second frame
The information of the vertical blanking period of the frame is alternately recorded on the magnetic tape as in the first embodiment. That is, the video recording / reproducing apparatus 50 divides the information of the vertical blanking period of one frame and records (time-division recording) the additional information recording area AR _SB for each ⅓ line.

Video information of 21 to 22 lines, half of 263 lines, half of 283 lines to 284 lines and 525 lines of the broadcasting standard is recorded in each additional information recording area AR _SB on the magnetic tape for each frame. . In this way, the video recording / reproducing apparatus 50 sequentially records the information of the vertical blanking period in the additional information recording area AR _SB on the magnetic tape, and also adds the video information of the broadcast standard which is not recorded in the video recording area AR _V to the additional information. The data is recorded in the recording area AR _SB .

The information of the vertical blanking period and the video information of the broadcast standard recorded in the additional information recording area AR _SB are restored by the additional information playback processing unit 53 at the time of playback, and the restored vertical blanking period is restored. Information and video information of broadcasting standard,
The data reproduction processing unit 15 adds the video information reproduced from the video recording area AR _V.

That is, the video recording / reproducing apparatus 50, during recording, records the video information on the screen of the video signal S1 in the video recording area AR _V as in the conventional case, and the conventional video recording area AR _V stores the video signal S1. The information of the vertical blanking period and the video information of the broadcast standard, which cannot be recorded because they do not fill the entire area, are recorded in the additional information recording area AR _SB on the magnetic tape. Further, the video recording / reproducing apparatus 1 is configured such that the additional information recording area A
Restoring video information of the information and broadcast standard recorded in the R _SB vertical blanking period, in addition to image information appearing on the screen is restored from the image recording area AR _V reproduces the reproduced video signal S20.

As a result, the video recording / reproducing apparatus 50 is
Similar to the embodiment, it is also used for a system for broadcasting service that requires a test signal such as VITS and VIR in the vertical blanking period, a system for medical use or industrial measurement that needs information of the vertical blanking period, and the like. be able to. Furthermore, the video recording / reproducing apparatus 50 can be used in a system or the like that requires video information of a broadcast standard.

(2-4) Effects of the Embodiments According to the above configuration, the recording data sampling unit 51 for sampling the information of the vertical blanking period not recorded in the video recording area AR _V and the video information of the broadcast standard and the vertical return. By providing the additional information recording processing unit 52 that applies a predetermined data array so that the information of the line period and the image information of the broadcast standard can be recorded, the information of the vertical blanking period and the image information of the broadcast standard can be simply configured. Can be recorded in the additional information recording area AR _SB with
Further, by providing the additional information reproduction processing unit 53 for extracting the information of the vertical blanking period and the video information of the broadcast standard, the information of the vertical blanking period and the video information of the broadcast standard are added to the additional information recording area AR with a simple configuration. _It can be reproduced from the _SB , and thus the video recording / reproducing apparatus 50 can be used in a system for broadcasting business, medical business or industrial measurement.

(3) Third Embodiment (3-1) Configuration of the Embodiment In FIG. 9 in which parts corresponding to those in FIG. 2 are assigned the same reference numerals, the video recording / reproducing apparatus 60 shows the information of the vertical blanking period. In addition, in the broadcast standard, video information that cannot be recorded in the video recording area is recorded in the additional information recording area by the component method. In this case, the video recording / reproducing apparatus 60 has substantially the same configuration as that of the second embodiment except that the recording method of the additional information recording area is the component method.

In the case of this embodiment, the input signal processing section 61 includes a decoder 20, a recording clock generator 21, a sampling sequencer 23 and an analog digital converter (A /
D) Input signal processing section 61 composed of 25 to 27
The video signal S1 of the composite system of the 525 system, which is input to the decoder 5, is input to the decoder 20, the recording clock generator 21, and the sampling sequencer 23. The recording clock generator 21 generates a sampling clock S30 having a predetermined frequency (for example, 13.5 [MHz]) based on the input video signal S1 as in the first embodiment, and converts the sampling clock S30 into analog digital conversion. Bowl (A /
D) 25 to 27, output to the compression encoding block 3 and the recording data sampling unit 62.

The decoder 20 receives the input video signal S1.
To BY signal S34, RY signal S35 and Y signal S
36, and the BY signal S34 and the RY signal S3 are generated.
5 and the Y signal S36 are output to the analog digital converters (A / D) 25 to 27, respectively. This BY signal S
34, RY signal S35 and Y signal S36 are converted into digital data by analog digital converters (A / D) 25 to 27 based on sampling clock S30, respectively, and BY data S37, R-
The Y data S38 and the Y data S39 are output to the compression encoding block 3 and the recording data sampling unit 62.

When the input video signal S1 is video information recorded in the video recording area, the BY data S3 is recorded.
7, the RY data S38 and the Y data S39 are compression-encoded by the compression encoding block 3, and the resulting digital data S4 is output to the error correction code adding section 4.

On the other hand, when the input video signal S1 is the information recorded in the additional information recording area, the additional information data S70 to S72 of the BY data S37, the RY data S38 and the Y data S39. The recording data sampling unit 62 performs predetermined sampling based on the sampling clock S30, and the resulting data S7
3 is output to the additional information recording processing unit 63. The additional information recording processing unit 63 applies a predetermined data array to the data S73 based on the recording color frame information S33 from the sampling sequencer 23, and the resulting data S7 is obtained.
4 is output to the error correction code addition unit 4.

In this way, the video information of the video signal S1 that appears on the screen is converted from the composite system to the component system digital data and recorded in the video recording area on the magnetic tape. The line period information and the video information of the broadcasting standard that cannot be recorded in the video recording area are similarly converted from the composite method to the component method digital data and recorded in the additional information recording area AR _SB .

Further, as shown in FIG. 10 in which parts corresponding to those in FIG. 3 are designated by the same reference numerals, the output signal processing unit 64 includes an encoder 30, a reproduction clock generator 31, a sampling sequencer 33, and a digital analog converter (D / A). ) 34 ~
A reproduction synchronizing signal S19 which is configured by 36 and is input from the outside is input to the encoder 30, the reproduction clock generator 31, and the sampling sequencer 33. The reproduction clock generator 31 has a predetermined frequency (for example, 13.5) similar to that of the recording clock generator 21 based on the reproduction synchronization signal S19.
A sampling clock S50 of [MHz]) is generated, and the sampling clock S50 is output to the digital-analog converters (D / A) 34 to 36, the compression encoding block 14 and the additional information reproduction processing unit 65.

The reproduction data S14, which is the video information recorded on the video recording area and displayed on the screen, is input to the compression coding block 14, where the sampling clock S14 is recorded.
Based on 50, it is restored to the original digital video signal and output to the data reproduction processing unit 15. The component-type BY data S53, RY data S54, and Y data S55 output to the data reproduction processing unit 15 are output from the digital analog converter (of the output signal processing unit 64 via the switching switches 38 to 40). D / A) 34-
36, where analog BY signals S56 and RY are respectively output based on the sampling clock S50.
After being converted into the signal S57 and the Y signal S58, they are input to the encoder 30. As a result, the encoder 30 causes the input component type BY signals S56, R-
The Y signal S57 and the Y signal S58 are converted into a composite type video signal S20, and the video signal S20 is output from the output signal processing unit 64.

Further, the reproduction data S75 composed of the information of the vertical blanking period and the video information of the broadcast standard recorded in the additional information recording area is input to the additional information reproduction processing section 65, where the sampling clock S50 is used for recording. The additional information data S76 to S78 are extracted based on the color frame information and output to the data reproduction processing unit 15. The additional information data S76 to S78 of the component system is transmitted to the additional information reproducing processing section 65 by the control signal S52 via the switching switches 38 to 40, and the digital analog converter (D / D) of the output signal processing section 64 is output. A) 34-
36 is input. The additional information data S76 to S78
Are converted into analog data by digital-to-analog converters (D / A) 34 to 36 based on the sampling clock S50, and then the encoder 3 respectively.
It is input to 0, converted into a composite type video signal S20, and output from the output signal processing unit 64.

The image information recorded on the image recording area on the screen in this manner is reproduced from the component type digital data to the composite type analog signal. On the other hand, the information of the vertical blanking period and the video information of the broadcasting standard recorded in the additional information recording area are reproduced from the digital data of the component system to the analog signal of the composite system. Thus, in the video recording / playback apparatus 60, the playback video signal S20 in which the information of the vertical blanking period and the video information of the broadcast standard are added to the video information displayed on the screen.
Are output from the output signal processing unit 64.

(3-2) In the recording format video recording / reproducing apparatus 60, as shown in FIG. 11, 23 to 262 lines and 285 to 524 lines of each frame of the inputted 525 system video signal S1 are formed. The video information displayed on the screen is the sampling clock S as described above.
Analog Digital Converter (A / D) 2 based on 30
After being converted to component type digital data in steps 5 to 27, the compression encoding block 3 similarly compresses the data to 720 samples per line based on the sampling clock S30. The video information displayed on this screen is, as shown in FIG. 12, a video recording area AR _V on the magnetic tape.
Will be recorded in order.

On the other hand, as shown in FIG. 11, 17 to 20 lines of each frame in the 525 system video signal S1
The information of the vertical blanking period consisting of 80 lines to 283 lines is converted into component type digital data by the analog digital converters (A / D) 25 to 27 based on the sampling clock S30, and is recorded in the recording data sampling unit 62. Is output. If the component signal recording method is 4: 1: 1, the recording data sampling unit 6
Similarly, the information of the vertical blanking period is 1080 samples per line (Y = 2) based on the sampling clock S30.
720, BY = 180, RY = 180).

In the case of this embodiment, as in the second embodiment, since the video information which cannot be recorded in the video recording area AR _V of the broadcast standard is recorded in the additional information recording area AR _SB , the video recording / reproducing apparatus 60 is set to 1 The information of the vertical blanking period of the line is divided into three and recorded in the additional information recording area AR _SB for each 1/3 line. That is, in the video recording / reproducing apparatus 60, as shown in FIG. 12, the additional information recording processing unit 63 performs the array processing of the information of the vertical retrace line period, and the color first and second frames are combined 16
Information on the vertical blanking period of a line is recorded in 16 × 3 = 48 frames in a time division manner. In this case, as in the second embodiment, the additional information recording area AR _SB of the color first frame on the magnetic tape is used.
The information of the vertical blanking period of the color first frame is recorded in the, and the information of the vertical blanking period of the color second frame is recorded in the additional information recording area AR _SB of the color second frame on the magnetic tape. It As a result, the video recording / reproducing device 60
Is capable of color framing during playback.

On the other hand, 21 to 22 lines of broadcasting standard, 2
Half of 63 lines, half of 283 lines to 284 lines and 5
The video information of 25 lines is recorded in each additional information recording area AR _SB on the magnetic tape for each frame as in the second embodiment.

In this way, the video recording / reproducing apparatus 60 is
The signal of the vertical blanking period is time-divisionally recorded in the additional information recording area AR _SB on the magnetic tape, and the video recording area AR _V
The video information of the broadcast standard not recorded in the above is recorded in the additional information recording area AR _SB . The additional information recording area information of recorded vertical blanking interval AR _SB is restore by connexion additional information recording area AR _SB to the additional information reproducing unit 65 at the time of reproduction for each of reproducing 48 frames. On the other hand, the additional information recording area AR _SB
The video information of the broadcast standard recorded in (1) is restored by the additional information reproduction processing section 65 at the time of reproduction every time the additional information recording area AR _SB is reproduced. The restored vertical blanking period information and the broadcast standard video information are added to the video information reproduced from the video recording area AR _V by the data reproduction processing unit 15.

(3-3) Operation of the embodiment In the above configuration, the composite type video signal S1
Information of the vertical blanking period is converted into component type digital data by the input signal processing unit 61, and then,
The recording data sampling unit 62 samples 1080 samples per line. The information of the vertical blanking period is divided into three lines for each line by the additional information recording processing unit 63 and recorded in the additional information recording area AR _SB for each ⅓ line. (Figs. 11 and 12) Also, 21 to 22 lines of broadcast standard, half of 263 lines, 283
Video information of half the lines to 284 lines and 525 lines is added to each additional information recording area A on the magnetic tape for each frame.
Recorded in _RSB . (Figs. 11 and 12)

That is, as in the second embodiment, the video recording / reproducing apparatus 60 records the video information of the video signal S1 displayed on the screen in the video recording area AR _V in the same manner as in the conventional case at the time of recording.
Since the conventional video recording area AR _V is less than the entire area of the video signal S1, the information of the vertical blanking period and the video information of the broadcast standard, which could not be recorded, are recorded on the magnetic tape as the additional information recording area AR
Record on _SB . During reproduction, the video recording / reproducing apparatus 1 restores the information of the vertical blanking period and the video information of the broadcast standard recorded in the additional information recording area AR _SB , and reproduces the video recording area AR _V.
The reproduced video signal S20 is reproduced by adding the reproduced video signal to the video information displayed on the screen.

As a result, the video recording / reproducing apparatus 60 can be used as a system for broadcasting business that requires test signals such as VITS and VIR during the vertical blanking period, and for medical or industrial measurement that requires information on the vertical blanking period. It can also be used for the system, etc. Further, the video recording / reproducing apparatus 60 can be used also for a system or the like which requires video information of broadcast standard. In the case of this embodiment, the additional information recording area AR
_By recording the information to be recorded in the _SB by the component system, the recording clock generator 21 can be used for recording the video recording area AR _V and the additional information recording area AR _SB , and the video recording area AR _V can be used. The reproduction clock generator 31 can be used for the reproduction of the data and the reproduction of the additional information recording area AR _SB .

(3-4) Effects of the Embodiments According to the above configuration, the recording data sampling unit 62 for sampling the information of the vertical blanking period not recorded in the video recording area AR _V and the video information of the broadcast standard and the vertical return. By providing the additional information recording processing unit 63 that applies a predetermined data array so that the information of the line period and the image information of the broadcast standard can be recorded, the information of the vertical blanking period and the image information of the broadcast standard can be simply configured. Can be recorded in the additional information recording area AR _SB with
Further, by providing the additional information reproduction processing unit 65 for extracting the information of the vertical blanking period and the video information of the broadcast standard, the information of the vertical blanking period and the video information of the broadcast standard are added to the additional information recording area AR with a simple configuration. _It can be reproduced from the _SB , and thus the video recording / reproducing apparatus 60 can be used in a system for broadcasting business, medical business or industrial measurement.

Further, since the information recorded in the additional information recording area AR _SB is recorded by the component system, the recording clock generator 21 is used for both the recording of the video recording area AR _{V and} the recording of the additional information recording area AR _SB. In addition, the reproduction clock generator 31 can be used for both the reproduction of the video recording area AR _{V and} the reproduction of the additional information recording area AR _SB , thus reducing the number of components of the video recording / reproducing apparatus 60, The power consumption of the recording / reproducing device 60 can be reduced.

(4) Other Embodiments In the above embodiments, the case where the present invention is applied to the video recording / reproducing apparatuses 1, 50, 60 having the recording / reproducing function has been described, but the present invention is not limited to this. Even when applied to a video recording device having only a function and a video reproducing device having only a reproducing function, the same effect as the above case can be obtained.

Further, in the above-mentioned embodiments, the case where the present invention is applied to the video recording / reproducing apparatus 1, 50, 60 composed of digital video tape recorders for the purpose of general use has been described, but the present invention is not limited to this. If it can record a video signal, it can be widely applied to, for example, a video disk device or a magnetic disk device.

Further, in the above-described embodiment, the case where the present invention is applied to the video recording / reproducing apparatus 1, 50, 60 for recording / reproducing the video signal of the 525 system in which the color frame is two frames has been described. Not limited to the above, the same effect as the above case can be obtained when applied to a video recording / reproducing apparatus that records / reproduces a video signal of the 625 system having four color frames.

For example, as shown in FIGS. 13 and 14 corresponding to the first embodiment, information of the vertical blanking period consisting of 17 to 18 lines and 330 to 331 lines (for example, sampling at an integer multiple of the color subcarrier frequency is performed. Per line 948
If the sample) is time-divisionally recorded in the additional information recording area AR _SB line by line, the same effect as the above case can be obtained. In this case, the information of the vertical retrace line period from the color first frame to the color fourth frame is time-divisionally recorded in the 16-frame additional information recording area AR _SB .

For example, as shown in FIGS. 15 and 16 corresponding to the second embodiment, information of the vertical blanking period consisting of 17 to 18 lines and 330 to 331 lines (eg sampling at an integer multiple of the color subcarrier frequency). And per line
948 samples) line by line additional information recording area AR _SB
Time-divisionally recorded to 623 lines of broadcast standard video information 360
If the sample is recorded in the additional information recording area AR _SB for each frame, the same effect as the above case can be obtained. In this case, the information of the vertical retrace line period from the color first frame to the color fourth frame is time-divisionally recorded in the 16-frame additional information recording area AR _SB .

Further, as shown in FIGS. 17 and 18 corresponding to the third embodiment, for example, information of the vertical blanking period consisting of 17 to 18 lines and 330 to 331 lines (for example, the component signal recording method is 4: 2). : 2, Y = 720 samples, BY = 360 samples, RY = 360 samples) are time-divisionally recorded in the additional information recording area AR _SB for each line.
If 360 samples of video information of the 623-line broadcasting standard are recorded in the additional information recording area AR _SB for each frame, the same effect as the above case can be obtained. In this case the first color
Information of the vertical blanking period from the frame to the fourth color frame is recorded in a 16-frame additional information recording area AR _SB in a time division manner.

Further, in the above-mentioned third embodiment, the case where the same sampling frequency as that of the video recording area AR _V is used when recording / reproducing information of the vertical blanking period in the additional information recording area AR _SB has been described. The present invention is not limited to this,
1 / integral of sampling frequency of video recording area AR _V
Even when the sampling frequency of 1 is used, the same effect as the above case can be obtained.

[0112]

As described above, according to the present invention, at the time of recording,
When it is not possible to record all the information of the video signal in the video recording area on the recording medium, the information for the vertical blanking period of the video signal is sampled and arranged for recording in the additional information recording area on the recording medium. The information of the video signal reproduced from the video recording area on the recording medium is reproduced at a predetermined reproduction clock at the time of reproduction by recording the converted information into the additional information recording area. Since the video signal is restored by adding the information of the vertical blanking period, even if all the information of the video signal cannot be recorded in the video recording area of the recording medium, the vertical (EN) A video recording device, a video reproducing device and a method thereof which can record and reproduce information of a line period and thus can be used for a business requiring the information of the vertical blanking period with a simple structure. It can be.

[Brief description of drawings]

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

FIG. 2 is a block diagram showing an input signal processing unit of the video recording / reproducing apparatus.

FIG. 3 is a block diagram showing an output signal processing unit of the video recording / reproducing apparatus.

FIG. 4 is a schematic diagram showing information recorded by the video recording / reproducing apparatus.

FIG. 5 is a schematic diagram showing a recording method of an additional information recording area AR _SB .

FIG. 6 is a block diagram showing a video recording / reproducing apparatus according to a second embodiment.

FIG. 7 is a schematic diagram showing information recorded by the video recording / reproducing apparatus.

FIG. 8 is a schematic diagram showing a recording method of an additional information recording area AR _SB .

FIG. 9 is a block diagram showing an input signal processing unit of a video recording / reproducing apparatus according to a third embodiment.

FIG. 10 is a block diagram showing an output signal processing unit of the video recording / reproducing apparatus.

FIG. 11 is a schematic diagram showing information recorded by the video recording / reproducing apparatus.

FIG. 12 is a schematic diagram showing a recording method of an additional information recording area AR _SB .

FIG. 13 is a schematic diagram showing information recorded by a video recording / reproducing apparatus according to another embodiment.

FIG. 14 is a schematic diagram showing a recording method of an additional information recording area AR _SB .

FIG. 15 is a schematic diagram showing information recorded by a video recording / reproducing apparatus according to another embodiment.

FIG. 16 is a schematic diagram showing a recording method of an additional information recording area AR _SB .

FIG. 17 is a schematic diagram showing information recorded by a video recording / reproducing apparatus according to another embodiment.

FIG. 18 is a schematic diagram showing a recording method of an additional information recording area AR _SB .

FIG. 19 is a schematic diagram showing a conventional recording method.

FIG. 20 is a schematic diagram showing a conventional recording method.

[Explanation of symbols]

1, 50, 60 ... Video recording / reproducing device, 2, 61 ... Input signal processing unit, 3, 14 ... Compression coding block, 4 ...
... error correction code addition unit, 5, 51, 62 ... recording data sampling unit, 6, 52, 63 ... additional information recording processing unit, 7 ... channel coding unit, 8 ... recording amplifier, 9 ... tape Transport, 10 ... Reproduction amplifier, 11 ... Data extraction section, 12 ... Channel decoding section, 13 ... Error correction processing section, 15 ... Data reproduction processing section, 16, 53, 65 ... Additional information reproduction Processing section 17, 64 ... Output signal processing section, 18 ... Reproduction color frame comparator, 20 ... Decoder, 21, 22 ...
... Recording clock generator, 23,33 ... Sampling sequencer 25-27 ... Analog digital converter,
28, 37 ...... Clock selection section, 24, 38-41 ......
Switching switches, 31, 32 ... Playback clock generator, 34-36 ... Digital analog converter.

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) H04N 5 / 7826,5 / 91-5/956 G11B 20/12

Claims (18)

(57) [Claims] 1. A video recording apparatus for recording video signal into a digital compression coding to record medium, the information of the vertical blanking interval of the video signal, said recording medium
Different video recording areas and additional information recording areas on the body
Of the information recorded in the video recording area
Sampling means for sampling at a grayed frequency identical or first sampling frequency divided by an integer, the information Yotsute sampled the <br/> vertical blanking interval to said sampling means, the additional information on the recording medium
Comprising a recording processing means for conversion into an array for the recording to the recording area, if it is not possible to record all the information above SL video signal in the video recording area on the recording medium, of the vertical blanking interval information video recording apparatus being characterized in that so as to record on the additional information recording area on the recording medium. 2.By the sampling means, the image
Information of the vertical retrace line period of the composite method among signals
On the recording mediumthe above
The sampling frequency of the information recorded in the video recording area and
Sampling with the same or an integer fraction sampling frequency
GuThen All the vertical retraces in the color frame of the video signal
The period information is stored in the additional information recording area on the recording medium.
Time division in order of the frames that make up the above color frame
I tried to record The method according to claim 1, wherein
Video recording device. 3. The color frame comprises a first frame and a second frame.
All in the first and second frames
The information of the vertical blanking period is added to the recording medium.
The video recording apparatus according to claim 2 , wherein time-division recording is performed in the information recording area . 4. The color frame includes first, second, third and third color frames.
And the fourth frame, the first to fourth frames
Information on all of the vertical blanking periods in the above-mentioned recording medium
The video recording apparatus according to claim 2 , wherein time-division recording is performed in the above-mentioned additional information recording area . 5.Record video signals by digital compression coding
In a video recording device for recording on a medium, The information of the vertical blanking period in the above video signal is set to the specified sample.
Sampling means for sampling at the ring frequency, The sampled by the sampling means
The information of the vertical blanking period is different from each other on the recording medium.
The additional information in the video recording area and the additional information recording area
Recording processing means for converting into an array for recording in a recording area
When The video recording area on the recording medium.
If all the information of the image signal cannot be recorded, the above
Divide the information of the straight-back line period and add the above on the recording medium.
Added time-division recording to the information recording area. Characterized by
YouRuiImage recording device. 6.Record video signals by digital compression coding
In a video recording device for recording on a medium, Of the above video signals, the
Information sampling frequency that is an integer multiple of the color subcarrier frequency
Sampling means for sampling with The sampled by the sampling means
The information of the vertical blanking period is different from each other on the recording medium.
The additional information in the video recording area and the additional information recording area
Recording processing means for converting into an array for recording in a recording area
When The video recording area on the recording medium.
If it is not possible to record all the information of the image signal,
Of all the above vertical blanking intervals within the color frame of the image signal
The information is recorded in the additional information recording area on the recording medium.
Time-division recording is performed in the order of the frames that make up the color frame.
It was to so Characterized byRuiImage recording device. 7. The color frame comprises a first frame and a second frame.
All in the first and second frames
The information of the vertical blanking period is added to the recording medium.
7. The video recording apparatus according to claim 6 , wherein time-division recording is performed in the information recording area . 8. The color frame comprises first, second, third and third color frames.
And the fourth frame, the first to fourth frames
Information on all of the vertical blanking periods in the above-mentioned recording medium
The video recording apparatus according to claim 6 , wherein time-division recording is performed in the above-mentioned additional information recording area . 9.Record video signals by digital compression coding
In the video recording method for recording on the medium, Different video recording areas and additional information on the recording medium
In the video recording area of the report recording area, all the video signals
If information cannot be recorded, the above video signal
Information on vertical retrace line of composite method
Sampling frequency is an integral multiple of the wave frequency
For recording in the additional information recording area on the recording medium
Converted to an array of All the vertical retraces in the color frame of the video signal
The period information is recorded in the additional information recording area on the recording medium.
Time division recording in the order of the frames that make up the color frame
Tried to do Characterized byRuiImage recordMethod. 10. A video signal is digitally compressed and encoded.Note
In the video recording method of recording on the recording medium, On the recording mediumDifferent video recording areas and additional information
The relevant area in the report recording areaVideo recording areaOnAll video signals
informationCan't recordIf the above video signal
ChiOf composite typeInformation on the above vertical blanking period, Con
Component method Converted to the video recording on the recording medium.
Same as the sampling frequency of the information recorded in the recording area
Is sampled at a sampling frequency that is
Allocation for recording in the additional information recording area on the recording medium
Convert to columns, All the vertical retraces in the color frame of the video signal
The period information is stored in the additional information recording area of the recording medium.
The time division is recorded in the order of the frames that make up the color frame.
I tried to record A video recording method characterized by the above. 11.Video signals are digitally compressed and encoded.
In a video recording device for recording on a recording medium, Information on the vertical blanking period of the above video signal and the video signal
Of the specified broadcasting standards of
Video recording area and additional information recording area
Broadcast standard information that cannot be recorded in the specified area
Sampling with sampling frequency of
Means and The sampled by the sampling means
The information on the vertical blanking period and the information on the above broadcasting standards are described above.
Change to the array for recording in the additional information recording area on the recording medium.
Recording processing means for converting On the above recording medium
Recording all information of the above video signal in the video recording area
If it is not possible, the information on the above vertical blanking period and the above broadcasting regulations
Case information in the additional information recording area on the recording medium.
I tried to record Characterized byRuiImage recordapparatus. 12. The method according to claim 12,Video signals are digitally compressed and encoded.
In the video recording method of recording on the recording medium, Different video recording areas and additional information on the recording medium
In the video recording area of the report recording area, all the video signals
If information cannot be recorded, the above video signal
Information on the vertical blanking period and the prescribed broadcast regulations for the video signal
Recording in the video recording area on the recording medium
Information about broadcast standards that cannot be
Sampling at the recording frequency and adding the above on the recording medium
Information record The additional information is converted to an array for recording in the area
Recorded in the recording area Characterized byRuiStatue
Recording method. 13.The video signal is based on digital compression coding.
In a video playback device that plays back the recorded media
hand, Different video recording areas and additional information on the recording medium
The video recorded in the video recording area of the report recording area.
Video information reproducing means for reproducing information of the image signal, After being recorded in the additional information recording area on the recording medium
The information of the vertical blanking period of the video signal is reproduced as the above video information.
Reproduction clock that is the same as the reproduction clock of the means
Additional information playback means to play back In the information reproduced by the video information reproducing means,
The vertical retrace line reproduced by the additional information reproducing means
Playback processing to add the period information and restore the above video signal
Means and Comprises Video characterized byPlaybackapparatus. 14.The video signal is based on digital compression coding.
In a video playback device that plays back the recorded media
hand, Different video recording areas and additional information on the recording medium
The video recorded in the video recording area of the report recording area.
Video information reproducing means for reproducing information of the image signal, Time-divisionally recorded in the additional information recording area on the recording medium.
Added to reproduce the information of the vertical blanking period of the above video signal
Information reproducing means, In the information reproduced by the video information reproducing means,
The vertical retrace line reproduced by the additional information reproducing means
The period information is stored in the additional information recording area on the recording medium.
From the array at the time of recording to the original array before recording and add
Reproduction processing means for restoring the video signal by To
Comprises Video characterized byPlayback device. 15.The video signal is based on digital compression coding.
In a video playback device that plays back the recorded media
hand, Different video recording areas and additional information on the recording medium
The component recorded in the video recording area of the report recording area.
Video information reproduction that reproduces the information of the video signal of the jet system.
Raw means, Time-divisionally recorded in the additional information recording area on the recording medium.
Vertical retrace period of the video signal of the composite system
Information is reproduced by a reproduction clock of an integer multiple of the color subcarrier frequency.
Additional information reproducing means for reproducing by In the information reproduced by the video information reproducing means,
The vertical retrace line reproduced by the additional information reproducing means
The period information is stored in the additional information recording area on the recording medium.
From the array at the time of recording to the original array before recording and add
To recover the composite video signal.
Original playback processing means Video re-features characterized by
Raw equipment. 16.The video signal is based on digital compression coding.
In a video playback device that plays back the recorded media
hand, Different video recording areas and additional information on the recording medium
The component recorded in the video recording area of the report recording area.
Video information that reproduces the above video signal information
Playback means, Time-divisionally recorded in the additional information recording area on the recording medium.
Vertical retrace of the video signal of the component system
The period information is used as the reproduction clock of the video information reproduction means.
Additional information to be played back with the same or an integer fraction playback clock
Playback means, In the information reproduced by the video information reproducing means,
The vertical retrace line reproduced by the additional information reproducing means
The period information is stored in the additional information recording area on the recording medium.
From the array at the time of recording to the original array before recording and added
However, the above component method is changed to the composite method.
And a reproduction processing means for reconstructing the video signal. Comprises
Characterized byRuiImage reproduction device. 17.The video signal is based on digital compression coding.
To a video playback device that plays back a specified recording medium recorded by
Be careful Different video recording areas and additional information on the recording medium
The video recorded in the video recording area of the report recording area.
Video information reproducing means for reproducing information of the image signal, After being recorded in the additional information recording area on the recording medium
Information about the vertical blanking period of the video signal and the location of the video signal
It can be recorded in the above video recording area of the standard broadcasting standards.
Of the broadcast standard recorded in the above additional information recording area
Additional information reproducing means for reproducing information and In the information reproduced by the video information reproducing means,
The vertical retrace line reproduced by the additional information reproducing means
The above video with period information and broadcasting standard information added
Playback processing means for restoring the signal and Comprises Characterized by
RuiImage reproduction device. 18.The video signal is based on digital compression coding.
In the video playback method that plays back the recorded media
hand, Different video recording areas and additional information on the recording medium
The video recorded in the video recording area of the report recording area.
Reproduce the information of the image signal, After being recorded in the additional information recording area on the recording medium
Information about the vertical blanking period of the video signal and the location of the video signal
The above-mentioned video recording area on the above-mentioned recording medium among the fixed broadcasting standards
Cannot be recorded in the additional information recording area
Play the information of the broadcast standard Addition of the above to the above information reproduced from the above video recording area
Information on the vertical blanking period reproduced from the information recording area and
And the above broadcasting standard information are added to restore the above video signal.
It was to so Characterized byRuiImage reproductionMethod.