JP3477753B2 - Recording and playback device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION 1. Field of the Invention
Recording suitable for use in digital VTRs for recording and reproducing signals
Reproduction devices, especially digital video signals
Is compressed and recorded and reproduced, and all digital H
The present invention relates to a recording / reproducing apparatus capable of recording and reproducing DTV signals as they are.
Wrong. [0002] 2. Description of the Related Art Digital video signals are compressed and rotated.
Digital recording on magnetic tape
VTR development is underway. Such digital
In a VTR, the digital video signal is DCT-converted and
It is compressed by variable length coding and recorded on a magnetic tape.
The recording rate of such a digital VTR is the standard recording rate.
25 Mbps in mode (24.948 Mbps in detail)
s). [0003] On the other hand, a combination of DCT transform and motion compensation has high performance.
The HDTV signal is compressed by the efficiency coding method,
HDTV broadcast (A
TV). All like this
There are various types of digital HDTV signals.
It has been proposed and its transmission rate is about 20Mbps
It is thought to be. [0004] Recording rate of video signal of digital VTR
Records the NTSC video signal as described above.
The standard recording mode is about 25 Mbps. But
In the standard recording mode, all digital HDTV
It is conceivable to record the signal directly. [0005] SUMMARY OF THE INVENTION However, all digital
In some HDTV signal systems, the transmission rate is high.
At the recording rate of the standard recording mode of the digital VTR
A method that is larger than 25 Mbps is adopted
May be In a conventional digital VTR,
The transmission rate of the standard recording mode of the digital VTR
When the recording rate exceeds 25 Mbps, all digital
Direct recording of HDTV signals in standard recording mode
You will not be able to do it. Therefore, an object of the present invention is to provide a standard
All digital HDT of almost all systems in recording mode
V signal can be recorded directly.Recording and playback
apparatusIs to provide. [0007] According to the present invention, one track is provided.
The track information recording areaAnd ohAudio areaAnd biDeo
regionWhenFrom subcode areaConfiguration and track information
Recording area and high-resolution video data areaAnd subcode area
And can be set to one of the configuration consisting ofAt the time of recording,
The audio area and video area are recorded in the track information recording area.
Area and subcode areaOr, or
Track information storage area and high-resolution video data area
A trace that identifies whether the configuration is
Data ID of each area while recording the
Record the area ID information that determines the data structure,During playback,
The recording track is determined by the track ID information and the area ID information.
Track configurationRecording information recording area and audio area
And a video area and a sub-code area.
Or a track information recording area and high resolution video
Whether the configuration consists of a data area and a subcode area
Judgment, and according to the judgment result, perform the playback process
It is a recording and reproducing device. [0008] [0009] [0010] [0011] [0012] [0013] [0014] The video signal and the audio signal are compressed and recorded.
To do so, the audio area 52 and the video area 53
And the subcode area 54 are arranged on one track.
You. Record all digital HDTV signals as they are
The audio area 52 and the video area 53
ATV data area 62 corresponding to the combination is set.
The ATV data area 62 and the subcode area 64 are 1
Placed on the track. And the ATV data area 6
Figure 2 shows the data packet of an all-digital HDTV signal.
Is recorded as is. In this ATV data area 62
Is an all-digital HDTV signal of almost all systems
Data can be recorded directly in the standard recording mode.
Wear. The configuration of one track includes ITI areas 51 and 6
1 can be determined by application ID and APT
it can. Therefore, the audio area 52 and the video area 5
3 and a sub-code area 54,
A TV data area 62 and a subcode area 64
The rack configuration and the ITI areas 51 and 61
It is possible to switch with the application ID and APT. The data structure in each area is based on the application in each area.
Application ID, AP1, AP2, AP3
Can be. All digital HDTV signal data
Structure when recording in ATV data area 62
Is recorded in the video area 53 as a compressed video signal.
In the same way as in the case, the processing can be shared. [0018] BRIEF DESCRIPTION OF THE DRAWINGS FIG.
It will be described in the light of the above. FIG. 1 shows a video to which the present invention is applied.
1 shows a configuration of a recording system of a recording / reproducing system. Figure
1 is an all digital HDTV television set.
2 is a receiving decoder for broadcasting, and 2 is a digital VTR recording.
It shows the system. All-digital HDTV television
Broadcasting, for example, by DCT and motion compensation, HDTV signal
Compressed and packetized with the audio signal.
To send. In other words, FIG.
Is an example of an HDTV television broadcast packet.
You. The service type is provided at the beginning of the packet.
You. This service type indicates that this packet
Packet, audio packet, or packet of auxiliary data
It shows whether or not. For example, if the service type is 00h
If it is a video packet, 01h is an audio packet,
02h is auxiliary data. After this service type
In the case of video packets, video data and audio packets
Audio data, ancillary data packets
Ancillary data follows. Video data is transformed using DCT
Compressed by high efficiency compression method combined with compensation
It is a digital HDTV signal. And error detection and correction
Regular parity is added. These video packets
Packets, audio packets, and auxiliary data packets
As shown in Fig. 3, it is broadcast as a mixed data sequence.
It is. In the receiving decoder 1 shown in FIG.
Of all digital HDTV television broadcasting
The cut data is supplied from an input terminal 3 to a demodulator 4.
The demodulator 4 demodulates the received packet. Output of demodulator 4
Is supplied to the signal processing circuit 5. The signal processing circuit 5
When error correction processing is performed on
Then, the additional data is extracted and the received packets are classified. This
The output of the signal processing circuit 5 is a video / audio decoder
6 and a switch of the digital VTR 2
It is supplied to the terminal 11A of the circuit 11. The video / audio decoder 6 has a
To expand the transmitted video signal
Processing of the audio signal that has been performed. Digital video
In the compression processing of a video signal, for example, DCT and motion compensation are combined.
The combined compression method is used. Video / O
The video signal expanded by the audio decoder 6 and the audio signal
The E signal is output from the output terminal 7. The recording system 2 of the digital VTR includes a digital
Video signal is compressed and the magnetic head is
It is recorded in. Recording system of this digital VTR
2 is to compress and record the input video signal,
HDTV television broadcast packet data
Can be recorded as it is. In the recording system 2 of the digital VTR,
The input terminal 10 has a video signal and an audio to be recorded.
A signal is provided. This video signal is, for example, NTSC
Or PAL video signal. This video message
Signal and audio signal are input to video / audio
Is supplied to the audio encoder 12. Video / Aude
The video encoder 12 includes a video signal and an audio signal.
To encode. That is, the video signal is digital
Coded by DCT, and further variable-length coded.
It is. Output of this video / audio encoder 12
Is supplied to the terminal 11B of the switch circuit 11. The switch circuit 11 is an all digital system.
When recording an HDTV signal, and when recording from the input terminal 10
Switch between recording video and audio signals
available. The switch circuit 11 has a mode
A setting signal is supplied. By this mode setting signal, all
When recording digital HDTV signals,
The switch circuit 11 is set to the terminal 11A side, and the input terminal 1
When recording video and audio signals from 0
, The switch circuit 11 is set on the terminal 11B side. The output of the switch circuit 11 generates a parity signal.
It is supplied to the circuit 13. Recording by parity generation circuit 13
An error correction code is added to the data. Parity occurrence times
The output of path 13 is provided to multiplexer 14. Mar
The chip multiplexer 14 stores the data in the ITI area at the head of the track.
Provided to record the ID data of each area and each area
I have. Multiplexer 14 has ITI and ID data
From the generation circuit 15, data and ID data of the ITI area
Is supplied. The data in the ITI area will be described in detail later.
Application ID and APT are included. This
Application ID and APT are included in the overall track structure.
It stipulates. In the ID data, the structure of each area
Determined application ID, AP1, AP2, A
.., APn. ITI and ID data
The mode setting signal is supplied from the input terminal 18 to the generation circuit 15.
Supplied. By this mode setting signal, all digital
When recording HDTV signals of the system, and when the input terminal 10
When recording video and audio signals
Different application ID and APT are added
You. The output of the multiplexer 14 is
, And supplied to the coder 19. The output of the channel coder 19
It is supplied to the rotating head 16. By the rotating head 16,
On the magnetic tape 17, an all-digital HDTV signal or
Is the video signal and audio signal from the input terminal 10.
Be recorded. FIG. 4 shows an example of the input in the recording system 2 of the digital VTR.
Record video and audio signals from the input terminal 10
1 shows the data arrangement of one track in the case of the above. Figure
4, one track is an ITI (Insert and Track)
 Information) area 51, audio area 52, and video
A video area 53 and a subcode area 54.
You. The ITI area 51 has a 1400-bit preamble.
And SSA (Start-Sync block consisting of 1830 bits)
 Area) and a 90 bit TIA (TrackInforma)
Option Area) (Total of 1920 videos including SSA and TIA)
280 bit post)
Consists of an amble. The audio area 52 has 500 video
Bit preamble and 10500 bit audio
Data recording area and 550 bit postamble
Become. The video area 53 has a preamble of 500 bits.
, A video data recording area of 111750 bits,
975-bit postamble. Subcode
The area 54 includes a 1200-bit preamble and a 120-bit preamble.
0-bit subcode data recording area and line number 62
5, 1200 in the television system with 50 fields
Television with 525 bits, 525 lines and 60 fields
In the alternative method, it consists of a 1325-bit postamble.
You. Between the ITI area 51 and the audio area 52,
A gap 625 of 625 bits is provided. audio
Between the area 52 and the video area 53, a 700-bit
A gap 56 is provided. Video area 53 and subcode
A gap 57 of 1550 bits is formed between the
Provided. And near the exit of the truck, 125
A 0-bit margin 58 is provided. The recording data is stored in the ITI area 51,
24-2 except amble, gap 55, 56, 57
5 modulation. The recording rate of the video area 53 is
32.184 Mbps in the body, and additional data VAUX
, Parity, SYNC, ID part only
Is 24.948 Mbps. FIG. 5 shows an all digital HDTV signal.
Indicates the data arrangement of one track when recorded as is
It is something. Records all digital HDTV signals
1 track, the ITI area 61 and the ATV
Data area 62 and subcode area 64
Become like The ITI area 61 has a 1400-bit pre-
Amble, SSA consisting of 1830 bits, and 90 bits
TIA consisting of a set of bits and a postamble of 280 bits
Consists of The ATV data area 62 has 500 bits.
Preamble and 123750-bit ATV data
It consists of a recording area and a 975-bit postamble.
The subcode area 64 has 1200 or 1325 bits.
Preamble and 1200-bit subcode data
Recording area and a 1200-bit postamble.
You. Between the ITI area 61 and the audio area 62,
A gap 65 of 625 bits is provided. ATV Day
1800 between the data area 62 and the subcode area 64.
A bit gap 66 is provided. And truck
, There is a 1250-bit margin 68 near the exit
Have been. The recording rate of the ATV data area 62 is
It is 35.64 Mbps in the body, and additional data VAUX and
Parity, SYNC, data part excluding ID part
Is 30.492 Mbps. The gap 65 is 875 bits,
The gap 66 may be 1550 bits. As described above, in one embodiment of the present invention, the input
NTSC video signal and audio
When compressing and recording an e-signal, as shown in FIG.
The audio area 52, the video area 53, and the sub
The load area 54 is arranged on one track. And
Audio data is recorded in the audio area 52, and
The compressed video data is recorded in the video area 53.
For recording all digital HDTV signals as they are
In this case, as shown in FIG.
The code area 64 is arranged on one track. Soshi
In the ATV data area 62, all digital HD
The data packet of the TV signal is recorded as it is. The HDTV signal of the all digital system is DC
High efficiency coding system combining T-transform and motion compensation
The transmission rate is 17 Mb.
It is considered that the speed is reduced from ps to about 30 Mbps. Up
As described above, the video signal of the recording system 2 of the digital VTR
Records a video signal of the NTSC system.
It is about 25 Mbps in the standard recording mode. Accordingly
I used only the video area 53 in the standard recording mode
Then, the transmission rate of all digital HDTV signals is
In the case of 25Mbps or more, all digital HDTV
The data packet of the signal cannot be recorded directly. In one embodiment of the present invention, the audio area
AT corresponding to an area obtained by combining the video area 52 and the video area 53
A V data area 62 is set. And this ATV
The data area 62 has a recording rate of about 30.5 Mbps.
Can be secured. Therefore, almost all types of digital
The data packet of the HDTV signal of the
You can record directly in the code. In a digital VTR to which the present invention is applied,
Determines the configuration of one track by application ID
be able to. Therefore, the audio area shown in FIG.
52, a video area 53, and a subcode area 54
The track configuration, the ATV data area 62 shown in FIG.
The track configuration including the subcode area 64 is
Can be switched using the application ID.
You. That is, the ITI regions 51 and 61 have
As described in detail, an application that determines the structure of the entire truck
3-bit APT (Application ID)
 ofa Track). With this APT,
The configuration of the entire rack, that is, the number of track divisions,
The size of the area is determined. And in each area
Is an application I that determines the data structure of each area
D1, AP1, AP2, and AP3 are provided.
Error correction coding is performed by the AP1, AP2 and AP3.
The data structure of each area, such as the structure, is determined. Application of ITI areas 51 and 61
If the APT ID is "000", for example,
It is divided into such a track structure. And each area
AP1, AP2, AP which are application IDs of
3 determines how data is recorded in each area.
Can be Application of ITI areas 51 and 61
If the APT as the ID is, for example, "001", it is shown in FIG.
It is divided into such a track structure. And of each area
Application IDs AP1, AP2, AP3
Determines how data is recorded in each area
Can be Hereinafter, the recording format will be described in detail.
You. The ITI regions 51 and 61 are formed as shown in FIGS.
, Preamble, SSA, TIA and postamble
And a bull. SSA is short SYNC length
SYNC blocks are recorded in large numbers. This SY
In the NC block, the SYNC number is near the entrance of the truck.
It is shaken in order from. When dubbing, this SYNC
If any of the blocks can be detected, the SYNC block
From the written SYNC number, the position on the current track
Position can be accurately determined. Based on this, the position of the after-recording
It is determined. That is, FIG. 6 shows the structure of the SSA.
It is. The SSA is a 30-bit SSA as shown in FIG. 6A.
The YNC block is composed of 61 blocks. FIG.
ID-U and ID-L of the SYNC block shown in FIG.
The SYNC block number is recorded. The TIA stores information on the entire track.
It is provided for storing. This includes all tracks
3 bits that are the application ID that determines the body structure
APT, 1-bit SP / L representing track pitch
P, 1-bit reserve, reference frame of servo system
6 bits of 1-bit PF (Piolot Frame)
Is stored. That is, FIG. 7 shows the structure of TIA.
Things. TIA has 30 bits as shown in FIG. 7A.
SYNC block is composed of three blocks. Figure
ID-U and ID-L of the SYNC block shown in FIG. 7B
Next, as shown in FIG.
Bit APT, 1 bit SP representing track pitch
/ LP, 1-bit reserve, servo system reference
A 1-bit PF indicating a frame is recorded. The audio area 52 is as shown in FIG.
Preamble, audio data recording area,
Consists of Stormble. Audio SYNC block
Is composed of 90 bytes as shown in FIG. 9A. Previous
Half 5 bytes are SYNC, ID0, ID1, IDP
Consists of IDP protects ID0 and ID1
Parity. As shown in FIG. 9B, the data part is
77 bytes, horizontal parity C1 and vertical parity C2
And protected by. A1 of the first half of the data section indicated by A1
5 bytes is AAUX which is additional data for audio
(Audio Auxiliary data). AAUX is 5 bars
It has a pack structure with one pack of seats. pack
Of the five bytes that make up the structure, the first byte is the header
-The remaining 4 bytes are data. ID1 has a tiger
The SYNC number in the lock is stored. This is the audio
From the pre-SYNC of the area 52, a video area 53 described later
Number from 0 to 168 consecutively until post SYNC
Is written in binary notation. SYNC of audio area 52
Pre-SYNC and Post-SYNC of ID0 of block
Upper rank of ID0 of SYNC block of parity of C and C2
The structure of the audio area 52 is determined for three bits.
The application ID AP1 is recorded. other
In the upper 4 bits of ID0 of the SYNC block,
The license number is recorded. The video area 53 is, as shown in FIG.
Preamble, video data recording area, and postamble
And bull. The video SYNC block is shown in FIG.
As shown in FIG. First half 5 buy
SYN is the same as the first 5 bytes of the audio area.
C, ID0, ID1, and IDP. The data part is
77 bytes, and as shown in FIG.
1 and the vertical parity C2. FIG.
Upper two SYNC blocks B1, B2 at 0A
And one SYNC block B3 immediately before the C2 parity
Is the video auxiliary data VAUX (Video Auxiliary
data). SYNC block for these VAUX
Except for B1, B2, B3 and SYNC block for C2
In the SYNC block, compressed video data is recorded.
Has been recorded. This VAUX data is also
Like VAUX, it has a 5-byte packed structure
ing. ID0 of the SYNC block of the video area 53
Of which, pre-SYNC, post-SYNC, and C2 parity
The upper 3 bits of ID0 of the SYNC block of
With the application ID that determines the structure of the video area 53
An AP2 is recorded. ID of other SYNC block
The sequence number is recorded in the upper 4 bits of 0. The subcode areas 54 and 64 are shown in FIGS.
As shown in FIG. 5, the preamble and the subcode data
It consists of a recording area and a postamble. Subcode area
SYNC block of 12 bytes as shown in FIG.
It is composed of The first 5 bytes are SYNC and ID
0, ID1, and IDP. Subcode area 54,
The 64 ID sections are configured as shown in FIG. sand
In other words, as shown in FIG.
To distinguish between the first half and the second half, the MSB of ID0
An F / R flag is provided. Next, SYNC number 0
In the SYNC blocks of and 6, as shown in FIG. 12A,
Application that determines the structure of subcode areas 54 and 64
AP3, which is an application ID. Other
In the SYNC block of the SYNC number, as shown in FIG.
INDEX ID, SKIP, PP ID (Ph
oto Picture ID) is stored. The INDEX ID is
This is for index search. SKIP I
D is used for cutting unnecessary scenes. PP
The ID is for a still image search. Each SYNC number
In the SYNC block of
Therefore, the absolute track number is written. As shown in FIG.
The area is 5 bytes and the data is only by horizontal parity C1.
Is protected. These 5 bytes are the VAUX and
Like AAUX and AAUX, it has a pack structure. This service
The time code and recording date are stored in the subcode data area.
Are recorded. Further, all digital HDTV signals are
When recording, the ATV data area 62 is set.
You. This ATV data area 62 has a structure as shown in FIG.
, Preamble, ATV data recording area, post
Consists of an amble. ATV data SYNC block
Is composed of 90 bytes as shown in FIG. 13A.
The first 5 bytes are SYNC, ID0, ID1, ID
P. The data part is 77 bytes and is shown in FIG. 13B.
As shown, the horizontal parity C1 and the vertical parity C2
More protected. Note that the upper 2 in FIG.
One SYNC block and one immediately before C2 parity
The SYNC block includes the video SUNC shown in FIG.
Similarly, secure it for additional data for ATV data
Is also good. The structure of the additional data is the same as the audio area 52 described above.
5 bytes as one unit, similar to the structure of
It is desirable to have a pack structure that performs the following. ATV data area
Of the ID0 of the SYNC block in the area 62, the pre-SYNC
C, post SYNC, C2 parity SYNC block
In the upper 3 bits of ID0 of the network, the ATV data area
AP2, which is an application ID that determines the structure of 62
Is recorded. Top 4 of ID0 of other SYNC blocks
The sequence number is recorded in the bit. As described above, the digitizer to which the present invention is applied
In the VTR, the video signal from the input terminal 10 shown in FIG.
Audio area 52 and video area when recording
Track configuration consisting of area 53 and subcode area 54
And the direct digital video signal shown in FIG.
ATV data area 62 and subcode area for recording
64 and the track configuration consisting of the application I
D decides. Therefore, when playing this app
Read application ID to determine track configuration
Processing can be switched accordingly.
You. FIG. 14 shows the structure of the reproducing system.
You. In FIG. 14, 21 is a receiving decoder, and 22 is a decoder.
1 shows a reproduction system of a digital VTR. Receiving decoder
21, the received all-digital HDTV
The packet data of the television broadcast is input to the input terminal 23.
Is supplied to the demodulator 24, and the demodulator 24
Demodulated. Then, the signal processing circuit 25 receives the received packet.
Error correction processing and the like are performed on the data. Signal processing
The output of the logic circuit 25 is supplied to the terminal 31A of the switch circuit 31.
Be paid. In the reproduction system 22 of the digital VTR,
The recording signal of the tape 32 is reproduced by the head 33. H
The output of the node 33 is supplied to the channel decoder 34, and the channel
The output of the channel decoder 34 is supplied to an error correction circuit 35.
Supplied to the ITI and ID decoder 36.
It is. The ITI and ID decoder 36
3 bit that is the application ID of the ITI area of the
APT is read. With this APT, the playback
The rack configuration is the same as the audio area 52 shown in FIG.
Track composed of a video area 53 and a subcode area 54
The ATV data area 62 shown in FIG.
It is determined whether or not the track is composed of the code area 64.
It is. Then, the data of each area such as the error correction coding structure
Application configuration included in the ID of each area
It is determined from the application IDs AP1, AP2 and AP3.
The determined recording track configuration is ITI and ID decoder
From 36, it is supplied to an error correction circuit 35. Error correction
In the positive circuit 35, the ITI and ID decoder 36
The error correction processing is switched according to the information. The output of the error correction circuit 35 is a switch circuit.
31 terminal 31B and video / audio
The signal is supplied to the decoder 37. Video / Audio Deco
The decoder 37 converts the reproduced compressed video signal into a variable-length code.
To the original video signal by decoding and inverse DCT transform
I do. The expanded video and audio signals are output.
Output from the force terminal 38. The switch circuit 31 is connected to the input terminal 23
When reproducing all digital HDTV signals,
Of the all digital system reproduced from the digital VTR 22
It is switched between when the HDTV signal is reproduced. input
Plays all digital HDTV signals from terminal 23
The switch circuit 31 is set to the terminal 31A side
Is done. All Digits Reproduced from Digital VTR 22
Switch to reproduce HDTV signals
The circuit 31 is set on the terminal 31B side. When the output of the switch circuit 31 is a video / audio
The data is supplied to the video decoder 26. Video / Audio Data
All digital HDTV signals are expanded by the coder 26
At the same time, audio signal processing is performed. Bidet
The video signal expanded by the audio decoder 26
The audio signal is output from the output terminal 27. [0052] According to the present invention, a video signal and audio
When compressing and recording audio signals,
The area 52, the video area 53, and the subcode area 54
It is arranged on one track. All digital HDT
When recording the V signal as it is, the audio area 5
ATV data equivalent to the combination of
Data area 62 is set, and the ATV data area 62
The code area 64 is arranged on one track. Soshi
In the ATV data area 62, all digital HD
The data packet of the TV signal is recorded as it is. this
In the ATV data area 62, only 30.49
Information can be recorded at a data rate of 2Mbps, almost all
All digital HDTV signal data of
In the standard recording mode, you can record directly. The structure of one track is the same as that of the track in the ITI area.
It can be determined by the application ID APT. This
Therefore, the audio area 52, the video area 53 and the sub
A track structure including a track area 54 and ATV data
Track configuration including area 62 and subcode area 64
And the application IDA of the ITI areas 51 and 61
It is possible to switch with PT. The data structure in each area is based on the application in each area.
Application ID Determined by AP1, AP2, AP3
Can be. All-digital HDTV signals are converted to data
The data structure for recording in the ATV data area 62 is
When recording a compressed video signal in the video area 53
In the same manner as described above, the processing can be shared.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a configuration of a recording system of a video recording / reproducing system to which the present invention is applied. FIG. 2 is a schematic diagram illustrating an example of an ATV data packet recordable by a video recording / reproducing system to which the present invention is applied; FIG. 3 is a schematic diagram used for describing an ATV data packet recordable in a video recording / reproducing system to which the present invention is applied; FIG. 4 is a schematic diagram used for describing a data configuration of a recording track in a digital VTR to which the present invention is applied. FIG. 5 is a schematic diagram used for describing a data configuration of a recording track in a digital VTR to which the present invention is applied. FIG. 6 is a schematic diagram used for describing an SSA data configuration in a recording track of a digital VTR to which the present invention is applied. FIG. 7 is a schematic diagram used for describing a data configuration of a TIA on a recording track of a digital VTR to which the present invention is applied. FIG. 8 is a schematic diagram used for describing a data configuration of a TIA on a recording track of a digital VTR to which the present invention is applied. FIG. 9 is a schematic diagram used for explaining an audio area in a recording track of a digital VTR to which the present invention is applied. FIG. 10 is a schematic diagram used to explain a video area in a recording track of a digital VTR to which the present invention has been applied. FIG. 11 is a schematic diagram used to explain a subcode area in a recording track of a digital VTR to which the present invention has been applied. FIG. 12 is a schematic diagram used to describe a subcode area in a recording track of a digital VTR to which the present invention has been applied. FIG. 13 is a schematic diagram used for describing an ATV data area in a recording track of a digital VTR to which the present invention is applied. FIG. 14 is a block diagram showing a configuration of a playback system of a video recording / playback system to which the present invention has been applied. [Description of Codes] 1,21 Receiving decoder 2 Digital VTR recording system 15 ITI and ID data generating circuit 22 Digital VTR reproducing system 36 ITI and ID decoders 51 and 61 ITI area 52 Audio area 53 Video area 54 and 64 Subcode Area 62 ATV data area

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Keiji Kanata 6-7-35 Kita-Shinagawa, Shinagawa-ku, Tokyo Inside Sony Corporation (72) Inventor Masaki Oguro 6-35, Kita-Shinagawa, Shinagawa-ku, Tokyo (56) References JP-A-5-81764 (JP, A) JP-A-5-198099 (JP, A) JP-A-5-12348 (JP, A) JP-A-5-37892 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) G11B 20/10-20/12

Claims (1)

(57) [Claims] [Claim 1] One track is recorded in a track information recording area.
A structure and consisting of O Dio area and video area and subcode area, and can be set to one of the structure comprising the recording region and the high-resolution video <br/> data area and sub-codes area of track information, recording sometimes, the recording area of the track information, whether a structure consisting of an audio area and a video area and a subcode area, or high-resolution video and storage area of the track information
Did a configuration consisting of O data area and the sub-codes area
And the area ID information that determines the data structure of each area is recorded in each area. At the time of reproduction, the configuration of the recording track is determined by the track ID information and the area ID information. either constitutive comprising a recording area and the o Dio area and video area and subcode area of the track information, or recording area of the track information
And determines whether a configuration consisting of a high-resolution video data area and a sub-codes area, according to a determination result, recording and reproducing apparatus to perform the reproduction process.