JP2002064781A - Dvd-recording and reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a DVD-recording and reproducing device, that stores information in relation to an aspect ratio of a video signal and can output that information, when outputting the video signal. SOLUTION: An aspect information detection section 43 of the DVD recording and reproducing device that records a video signal on a removable optical disk, and reproduces the video signal from the removable optical disk, extracts the aspect information from the video signal. The detection section 43 gives the aspect information to an encoder section 50. The encoder section 50 sets the aspect information to a sequence header in an MPEG video, or an RDI pack or an STI in a VMGI(video manager information).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a DVD (Digital Versatile Disk) recording / reproducing apparatus.

[0002]

2. Description of the Related Art In recent years, there has been developed an optical disk reproducing apparatus for moving images which reproduces an optical disk on which data such as video and audio data is recorded. This device is, for example, an LD or a video C
Like a D playback device, it is generally used for watching movie software and enjoying karaoke.

[0003] Among them, currently, MPEG standardized internationally
2 (Moving Image Coding Expert Group) method and AC3 audio compression method
The VD standard has been proposed.

This standard supports the MPEG2 system as a moving image compression system according to the MPEG2 system layer,
AC3 audio compression and MPEG for audio compression
Supports audio compression. Further, it is possible to handle sub-picture data in which bitmap data is run-length-compressed for subtitles such as movies and karaoke. Further, according to this standard, control data (navi pack) for special reproduction such as fast forward and reverse is added in relation to a reproduction apparatus.

[0005] Furthermore, in this standard, IS09 is used so that data on a disk can be read by a computer.
660 and micro-UDF standards.

[0006] The standard of the media is DV
Following the DVD-ROM standard, which is D-video media, the DVD-RAM standard (2.6 GB) was completed.
VD-RAM drives are also used as computer peripherals.
It is beginning to spread.

Further, at present, a DVD-Video standard for realizing a system capable of recording and reproducing information in real time using a DVD-RAM, that is, RTR (Real Time
Recorder)-The DVD standard is being completed, and verification work will be completed soon.

This standard conforms to the DVD-
It is based on video standards. In addition, the RT
A file system compatible with R-DVD is also currently standardized.

Therefore, a DVD using an RTR-DVD
Recording / playback devices are starting to be released.

Here, in the DVD recording / reproducing apparatus, the video signal processing is performed after the analog signal (A / A /
D) It is converted and becomes a digital signal, which is digitally processed. Here, the digitized digital video signal is digitized based on the CCIR656 standard.

On the other hand, a video device (television (TV) receiver, VTR, etc.)
There are S video terminals and R, G, B terminals. The R, G, and B terminals are terminals that separate and output red, green, and blue color signals, and the S video terminal is a terminal that outputs a luminance signal and a color difference (color) signal.

Further, as the video signal type, a signal having an aspect ratio of 4: 3, a letterbox signal having an aspect ratio of 4: 3, and a squeeze (or full mode) of 16: 9 are used.
Signal is present. (1) The standard television screen has an aspect ratio of 4: 3. (2) A squeeze (or full mode) signal is 525 lines and an aspect ratio of 1 on a standard television signal format having an aspect ratio of 4: 3.
This is a signal that carries information on the image of 6: 9. (3) A letterbox signal with an aspect ratio of 4: 3 has 525 lines,
Aspect ratio 4: 3, upper and lower non-image areas and aspect ratio 1
This is a wide image signal in which a 5: 9 main picture portion (53 to 232/316 to 495 lines) exists.

Here, since the above-mentioned wide TV and standard TV are mixed, in order for the above-mentioned video signal type to be recognized on the display side, the title "Identification signal of video signal having different aspect ratio and transmission method" is used. The identification signal is standardized.

The above-mentioned identification signal superimposes a direct current (DC) component (control signal) on a color signal output from the S video terminal, and identifies the signal format according to the DC level. The rules are as follows.

Squeeze signal of signal level 5.0 (+0 to -1.5) V... 16: 9 Signal box signal level of 2.2 (+0.2 to +0.2) V... 4.3 Signal level 0 V ... 4: 3 In addition, the output DC impedance of the C signal of the S video terminal is 10 (+ -3) kΩ ... at the time of squeeze signal 10 (+3 to -7) kΩ ... at the time of the letterbox signal The input DC of the C signal of the S video terminal 100k impedance
Ω or more is set.

Further, in the video equipment, the following display is performed on the connection portion of the S video terminal.

(1) When only squeeze signal is supported: "S1 video input" is provided on the output side, and "S1 video input" is provided on the input side.
"Video output" is displayed.

(2) Cases corresponding to squeeze signal and letter box signal: "On the output side," S2 video input ";
“S2 video output” is displayed on the input side.

(3) When the state corresponding to the squeeze signal and the letterbox signal and the state corresponding to only the squeeze signal can be switched, "...
“S1 / S2 video input” and “S1 / S2 video output” are displayed on the input side.

[0020]

As described above, there is a standard for superimposing a control signal on an input / output color signal at an S video terminal according to signals having different aspect ratios. However, in a DVD video recording / reproducing apparatus,
Nothing has the above control signal. For this,
When the wide TV and the standard TV are reproduced, it is necessary to perform a unique determination process on the display side. Also, the determination method differs depending on the manufacturer.

Therefore, an object of the present invention is to provide a DVD recording / reproducing apparatus capable of setting an aspect signal in accordance with the input video signal.

Another object of the present invention is to provide a DVD recording / reproducing apparatus capable of performing identification signal processing corresponding to an output signal of an S video terminal.

[0023]

In order to achieve the above object, according to the present invention, in an apparatus for recording and reproducing on a removable optical disk, an aspect information detecting section 43 extracts aspect information from a video signal. The aspect information is provided to the encoder unit 50. Encoder unit 50
Is based on the aspect information, the sequence header in the MPEG video, or the RDI pack, or the S in the VMGI.
It is provided with means for setting to TI.

More specifically, in an apparatus for recording and reproducing data on and from an optical disk, an aspect information extracting unit for extracting aspect information from a video signal, and an MPEG video sequence header or RDI pack or VMGI based on the extracted information. Means for preparing the STI, a formatter unit for formatting the prepared aspect information according to the RTR-DVD format, and an RTR-formatted aspect information for the formatted aspect information.
It comprises an STI setting unit for setting STI in VMGI according to the DVD format, and an optical disk recording unit for recording information from the formatter unit and management information (VMG) on the optical disk.

[0025]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows the overall block configuration of a DVD recording / reproducing apparatus to which the present invention is applied. When the blocks in FIG. 1 are roughly divided, the left side shows main blocks of the recording unit, and the right side shows main blocks of the reproducing unit. 1 will be described later in detail.

FIG. 2 shows a part of the directory structure of the DVD system. FIG. 2 shows a directory structure of a DVD system, particularly a real-time recording (RTR) DVD, and a directory structure of an audio file.

In the DVD, directories exist for each standard. These directory names are "VIDEO_TS" for DVD-Video and "VIDEO_TS" for DVD-Audio.
For “AUDIO_TS” and RTR-DVD, “DV
D_RTR ”. In FIG. 2, "DVD_RT
R "and" AUDIO_TS "are shown. Recorded data exists in each directory.

In a DVD, data is stored in a normal file format. The title corresponds to, for example, one movie, and a plurality of titles on one disc can be recorded. A collection of titles is called a title set, and this title set is composed of a plurality of files.

In the above DVD-Video, information for managing the information of this disc is recorded on one disc. This management information is recorded as a file,
Video Manager (VMG).

The DVD-Video title set (VTS) is provided with video title set information (VTSI) for managing the title set. The VTSI, a video file composed of video data, and VTSI backup.

On the other hand, in the RTR-DVD, the VMG
(Information for managing disk information) and VTSI
(Information for managing the title set) is defined as new video manager information (VMGI).

In the directory “DVD_RTR”, a VR as a video manager (VMG) file is stored.
_MANEGER. I / O, VR_MOVIE. VR_STILL.VRO as a still picture video file. VRO, VR_AUDI as a still picture video file
O. VRO, VR_MANAGR. Each file of BUP exists.

The directory "AUDIO_T"
S ”contains audio manager information (AMGI)
AUDIO_TS. AUDIO_TS.IFO, audio manager information (AMGI) backup file ATS_0 as BUP, audio title set information (ATSI) file
1. ATS_01.IFO as an audio title set (ATS) audio object file. A
OB is present.

VR_MANEGER. In the IFO file, navigation data is recorded. The navigation data is data for advancing a program set, a program, an entry point, a playlist, and the like.

VR_MOVIE. The VRO file is a so-called movie AV file for recording a movie video object (movie VOB).

VR_STILL. VRO is a still picture AV file for recording a still picture VOB.

Further, VR_AUDIO. VRO is a still picture additional audio file for recording an additional audio stream for a still picture.

VR_STILL. VRO is used to record an original VOB composed of a video part including an arbitrary sub-picture unit. At this time, the audio part related to the video part is also included in the original VOB.

VR_AUDIO. VRO is a file used to record an additional audio part, and this additional audio part indicates an audio stream recorded by after recording. V
R_AUDIO. The audio part recorded in VRO is VR_STILL. Used in combination with several video parts recorded in VRO.

VR_MANAGR. BUP is VR_M
ANEGER. This is an IFO backup file.

FIG. 3A shows the VR_MOVIE. VR_STILL.VRO as a still picture video file. VRO
Shows the file structure of.

A video file has a hierarchical structure, one file is composed of a plurality of VOBs (video objects), one VOB is composed of a plurality of VOBUs (video object units), and one VOBU is
Consists of multiple packs. As multiple packs, R
There are a DI pack, a V pack, an A pack, and the like.

The V-pack is obtained by compressing video data according to the MPEG2 system and includes a pack header, a packet header, and a video data portion. The A-pack is used when the audio data is, for example, linear PCM or MPEG,
Alternatively, it is processed by a method such as AC3, and includes a pack header, a packet header, and an audio data part.

FIG. 3B shows the relationship between M and V pack.
2 shows a format of video data based on the PEG2 system.

A group of pictures (GOP) is a unit that is compressed using a plurality of video frames, and a sequence header is added to the head of the group.
The sequence header describes the start code (SHC) of the sequence header, the number of vertical lines (HS) of pixels, the number of horizontal lines of pixels (VS), the aspect ratio (PAR), and the like.

The RDI pack shown in FIG. 4 is called a real-time data information pack (RDI_PCK) and includes real-time general information (RDI_PCK).
_GI), display control and copy control information (DCI_CCI), manufacturer information (MNF
I) and the like.

Real-time general information (RDI_G)
I) is information indicating the start time at which the first field of the VOBU to which this belongs is reproduced, that is, VOBU_S_P
TM and information indicating the recording time of the VOBU, that is, VOBU
BU_REC_TM.

The display control and copy control information (DCI_CCI) indicates the status of the display control information (DCI) and the copy control information (CCI) (DCI_CCI_S).
S), display control information (DCI) itself, and copy control information (CCI) itself.

The display control information status (DCI_SS) of (DCI_CCI_SS) is
In the first area, when only valid aspect ratio information exists (01b), when the effective aspect ratio, subtitle mode, and film camera mode exist (1b)
1b).

Display control information (DCI)
Includes aspect ratio information, subtitle mode information, and film camera mode.

The aspect ratio information indicates that the aspect ratio is 4:
3 (000b) and an aspect ratio of 16: 9 (0001b). Further, when the source picture is a letterbox, 1000b (letterbox (14: 9) but screen center arrangement), 01
00b (letter box (14: 9) but screen top arrangement), 1101b (letter box (16: 9)
9) but screen center arrangement), 0010b
(Letterbox (16: 9) but screen top arrangement) 1010b (Letterbox (> 16: 9)
But the screen center arrangement), 0111b (1
4: 9 full format).

The subtitle mode identifies that the subtitle is not open (00b), the subtitle is inside the active image area (01b), and the subtitle is outside the active image area (10b).

The film camera mode identifies a camera mode (0b) and a film mode (1b).

The order of reproducing data recorded in the video file is defined by a program chain (PGC). This program chain (PGC) includes a cell (C
cell), and a VOB to be reproduced is defined in the cell (Cell). This PG
The part where the specific information of C is recorded is the program chain information (PGCI) part in the VMG file.
There are two types of PGCI, one is the original PGCI
CI (ORG_PGCI) and the other is a user-defined PGC table (UD_PGCIT).

Here, the structure of the video manager file (VMG) in which the above-mentioned program chain information is described will be described.

FIG. 5 shows the information described in the VMG file in a hierarchical manner.
GCI) is shown in hierarchical detail.

In the VMG file, RTR_VMI
(RTR video manager information), M_AVFIT
(Movie AV file information table), S_AVFI
T (still picture AV file information table), O
RG_PGCI (original program chain information), UD_PGCIT (user-defined program chain information), TXTDT_MG (text data manager), MNFIT (manufacture information table)
There is.

ORG_PGCI (original program chain information) is a special PGC for reproducing data in the recording order. In other words, the PGC is information for designating the data reproduction order, and indicates a program set which is a connection of programs. This program is a special PGC for reproducing in the recording order, which is data stored in a VRO file. UD_PGCIT (user-defined program chain information) also specifies the order of data reproduction. However, the user specifies a part of the program specified by the ORG_PGCI by editing the program, and connects the parts. I have. Therefore, UD_PGCIT indicates a connection of cells (cells), not a connection of a set of programs. The cell is information indicating each part of the program.

ORG_PGCI (original program chain information) and UD_PGCIT (user-defined program chain information) have similar data structures.

The PGCI is composed of PGC general information (PGC_G
I), PGC information table (PGCIT), cell information search pointer (CI_SRPT), cell information table C
IT).

The PGC general information (PGC_GI) describes the number of programs (0 in UD_PGC) and the number of cell search pointers in this PGC.

In the PGC information table (PGCIT),
Program information (PGI) is described, and a program type (PG_TY) indicating whether or not the program is in an erase protected state, the number of cells in the program (C_Ns), and primary text information indicating a character set (PRM_TEXTI), item text search pointer number (IT_TXT_SRPN) corresponding to this program, cell number, and representative image information (REP_PICTI) indicating a picture point.

Cell information search pointer (CI_SRP
In T), the start address of the cell information (CI) is described. Cell information (CI # 1 to CI # j) specified by the search pointer is described in the cell information table CIT.

The cell information (CI) includes cell general information (C_
GI), cell entry point information (C_EPI # 1)
To C_EPI # k). The cell general information will be described later. Cell entry point information (C_EP
I) includes a type A and a type B.

Type A describes the identification of the entry point type (type A or B) and the presentation time (EP_PTM) of the entry point. The presentation time (EP_PTM) indicates the playback time of the entry point. Specifically, (EP_PTM) indicates the playback start time of the first video field and the playback time of the last video field, which are encoded as the presentation time stamp in the corresponding VOB. In type B, primary text information at the entry point exists in addition to type A information.

The cell general information (C_GI) includes a cell type (C_TY) and a search pointer number (M_VOB_SR) of the VOBI corresponding to the VOB specified by the cell.
PN). Also, the number of cell entry points (C_EPI_Ns), the cell reproduction start time (C_V_
S_PTM), cell playback end time (C_V_E_PT)
M).

FIG. 6 hierarchically shows information described in the VMG file, and particularly shows the movie AV file information table (M_AVFIT) in detail in a hierarchical manner.

The above M_AVFIT contains the movie AV
File information table information (M_AVFITI), movie VOB stream information (M_VOB_STI # n)
(N = 1 to n), movie AV file information (M_AV)
FI) is described.

Movie AV file information (M_AVF)
I) will be described.

Movie AV file information (M_AVF)
I) includes M_AVFI general information (M_AVFI_G
I), M_VOB information search pointer (M_VOBI_
SRP # n), movie video information (M_VOBI #)
n) is described.

The M_AVFI general information describes the number of M_VOB search pointers and the start address of M_VOB information.

The M_VOB information #n contains the M_VOB
General information (M_VOB_GI), seamless information (S
MLI), audio gap information (AGAPI), and time map information (TMAPI).

M_VOB_GI includes a VOB type indicating whether the VOB is in a normal state or a temporarily erased state, and the audio stream includes the VOB type.
The audio status indicates whether the original was recorded as the original when it was created, or whether it was partially or wholly modified.

In the M_VOB_GI, the recording time of this VOB, and the sub-minute time, are recorded. Furthermore, in the M_VOB_GI, a stream information number of the M_VOB, a video start time and an end time of the VOB, and copy protection information are described.

Next, movie video information (M_VOBI #)
n) will be described. This M_VOBI # n is
It is specified by VOBI_SRP # n.

Movie video information (M_VOBI # n)
Includes a VOB type indicating whether the VOB is in a normal state or a temporarily erased state, and whether the audio stream was recorded as an original when the VOB was created, or An audio status indicating whether the audio data has been partially or totally corrected is described.

Further, in the M_VOB_GI, the recording time of this VOB and the minutes in the sub are recorded. Furthermore, in the M_VOB_GI, a stream information number of the M_VOB, a video start time and an end time of the VOB, and copy protection information are described.

Next, the time map information (TMAP)
I) will be described.

The TMAPI is used to convert a presentation time into an offset address. This information is prepared to be utilized not only for normal reproduction but also for special reproduction and time search.

The TMAPI is used for the time map general information (T
MAP_GI), time map entry table (T
M_ENT # 1 to #n), and a video object entry table (VOBU_
ENT # 1 to #n).

Each TM_ENT includes the address information of the corresponding VOBU and the time difference information between the reproduction time specified by the time entry and the reproduction start time of the VOBU.

Each VOBU_ENT includes the reproduction time and size information of each VOBU. The size of the VOBU is measured by a logical block, and the playback time is measured by a video field.

TMAP_GI is the number of time entries (TM_ENT_Ns) and the number of VOBU entries (VO
BU_ENT_Ns), time offset (TM_OF)
S), and has an address offset (ADR_OFS).

Next, VOBU_ENT will be described.

VOBU_EN describes the address of the first reference image of this VOBU (1STREF_SZ)
And the playback time of this VOBU (VOBU_PB
_TM) and the size of this VOBU (OBU_
SZ). The first reference picture is the last address of the I picture from the beginning of the VOBU, and is the address of the data required first to decode the video in the VOBU. The playback time of a VOBU is indicated by the number of video fields in the VOBU. The size of the VOBU is indicated by the number of packs in the VOBU.

FIG. 7 shows the information similarly described in the VMG file in a hierarchical manner, in particular, a movie video object stream information table (M_VOB_STI #).
1 to # 3) are shown hierarchically in detail.

M_VOB_STI # n includes video attribute information (V_ATR) indicating a video attribute, and an audio stream number (AST) indicating the number of audio streams.
_N), indicating the number of sub-picture streams (SPST_N).
s), indicating the attribute of each audio stream (A_AT)
R), indicating the color palette of the sub-picture (SP_PLT)
Is described. Indicates the attribute of the audio stream (A
_ATR) indicates the attribute of stream # 0 (A_A
TR0) and the attribute of stream # 1 (A_ATR
1).

In the V_ATR indicating the video attribute described above, video is MPEG1 (00
b) or MPEG2 (01b) is described. The type of the TV mode is 525 lines / 60 Hz (00b) or 625 lines / 5
0 Hz (01b) is described. Also,
4: 3 (00b) or 16: 9 as the aspect ratio
(01b) is described. As an application flag, this video stream is encoded with the aspect ratio defined by this V_ATR (00b), or this video stream is encoded with the aspect ratio defined by this V_ATR. (01b) is described. When the video stream is identified by (01b), the actual aspect ratio of the video stream is described in RDI_PCK. Further, as the V_ATR indicating the video attribute, there is information on the line 21. Furthermore, video resolution information is described.

The above RTR_VMI will be described.

This RTR_VMI roughly includes two pieces of information. One is VMGI_MAT (video manager information management table), and the other is
One is PL_SRPT (Playlist Search Pointer Table).

The VMGI_MAT includes a VMG identifier for identifying the VMG, an RTR_VMG end address indicating information indicating the end position of the VMG, an RTR_VMGI end address indicating information indicating the end position of the VMG information, and a version number of the book. , A time zone that is information indicating the time when various data is recorded or updated on this disc, a still time for a still picture,
Character set code for primary text, resume mark information paused during playback of the disc and describing the information (program chain number, etc.) required for the next playback, necessary for playing the disc representative image Disc-representative picture information describing the information and disc-representative name which is description information based on a character code set for displaying a representative name of the disc are described. Furthermore, the start address of the next stored M_AVFT, the start address of S_AVFIT, ORG_PG
CI start address, UD_PGCI start address, TXTDT_MG start address, MNF
Describes the start address of the IT.

[0093] PL_SRPT describes the number of playlist search pointers and the search pointer of each playlist. The playlist is a list indicating a partial portion of the program, and a reproduction order can be specified by a user, and is defined by a user-defined PGC described later. The playlist search pointer includes a playlist type for identifying a playback target such as a movie or a still, a program chain number corresponding to the pointer, information on a time when the playlist was created, and information for the playlist. Primary text information and the like are included.

The recording / reproducing apparatus for a disc standardized as described above will be described again with reference to FIG.

In the recording / reproducing DVD, the reproduction process is performed in accordance with the PGCI. In the PGC, a plurality of programs can be designated, and cells are defined in the programs. VOB to be played back by cell
Will be specified. A special PGC for reproducing in the recording order is called an original PGC, and information of the original PGC is recorded as ORG_PGCI. Further, the attribute information (resolution information, aspect information, audio attribute information, etc.) of the video data at this time is V
It is recorded in the STI in the MGI. The above-described pack is a minimum unit for performing the data transfer process. Further, the minimum unit for performing logical processing is a cell unit, and the logical processing is performed in this unit. Therefore, when recording is performed, the recording signal is converted into a format that matches the above format.

The information recording / reproducing apparatus comprises an information recording / reproducing section 32 for rotatingly driving an optical disk 1001 as an information storage medium having a video file and reading / writing information from / on the optical disk 1001, and a recording side. An encoder unit 50, a decoder unit 60 constituting a reproduction side,
A microcomputer block 30 for controlling the operation of the apparatus main body is a main component.

The encoder unit 50 includes an ADC (analog-to-digital converter) 52 and a V (video) encoder 53.
, An A (audio) encoder 54, an SP (sub-picture) encoder 55, a formatter 56, and a buffer memory 57.

The ADC 52 has an external analog video signal from the AV input section 42 and an external analog audio signal,
Alternatively, an analog TV signal + analog audio signal from a TV (television) tuner 44 is input. Here, in the present apparatus, an aspect information detecting section 43 is connected to the AV input section 42, and the detected aspect information is supplied to a formatter 56.

The ADC 52 digitizes the input analog video signal at, for example, a sampling frequency of 13.5 MHz and a quantization bit number of 8 bits. That is, the luminance component Y, the chrominance component Cr (or YR), and the chrominance component Cb (or YB) are each quantized by 8 bits.

Similarly, the ADC 52 converts the input analog audio signal into, for example, a sampling frequency of 48 k.
Hz and the number of quantization bits is 16 bits.

When an analog video signal and a digital audio signal are input to the ADC 52,
52 allows the digital audio signal to pass through.
However, without changing the content of the digital audio signal,
Processing for reducing only the jitter accompanying the digital audio signal, processing for changing the sampling rate or the number of quantization bits, or the like may be performed.

On the other hand, when a digital video signal and a digital audio signal are
52 allows the digital video signal and the digital audio signal to pass through. The digital video signal and the digital audio signal may be subjected to a jitter reduction process, a sampling rate change process, etc. without altering the content.

The digital video signal output from the ADC 52 is sent to the formatter 56 via the V encoder 53. The digital audio signal output from the ADC 52 is sent to the formatter 56 via the A encoder 54.

The V encoder 53 has a function of converting an input digital video signal into a digital signal compressed at a variable bit rate based on the MPEG2 or MPEG1 standard. Also, the A encoder 54 converts the input digital audio signal into an MPEG or AC-
It has a function of converting a digital signal compressed at a fixed bit rate or a linear PCM digital signal based on three standards.

When sub-picture information is input from the AV input section 42 (for example, a signal from a DVD video player with an independent output terminal for sub-picture signals), or a DVD video signal having such a data structure is broadcasted, When the video signal is received by the TV tuner 44, the sub video signal (sub video pack) in the DVD video signal is input to the SP encoder 55. The sub-video signal input to the SP encoder 55 is
The signal is arranged in a predetermined signal form and sent to the formatter 56.

The formatter 56 includes a buffer memory 57
By performing predetermined signal processing on the input video signal, audio signal, sub-picture signal and the like while using as a work area, the format (file structure) described above with reference to FIGS. Is output to the data processor 36.

Here, a brief description will be given of standard encoding processing for creating the recording data. That is, when the encoding process is started in the encoder unit 50, parameters necessary for encoding the video (main video) data and the audio data are set.

Next, by pre-encoding the main video data using the set parameters, the distribution of the code amount optimal for the set average transfer rate (recording rate) is calculated. The encoding process of the main video data is executed based on the code amount distribution obtained by the pre-encoding process. At this time, the encoding process of the audio data is also executed at the same time.

As a result of the pre-encoding process, if the amount of data compression is insufficient (when the desired video program cannot be accommodated in the information storage medium to be recorded), if there is a chance to perform the pre-encoding process again (for example, If the source is a reproducible source such as a video tape or a video disc), a partial re-encoding process of the main video data is executed, and the main video data of the re-encoded portion is pre-encoded. Is replaced with the main video data portion. Through such a series of processes, the main video data and the audio data are encoded, and the value of the average bit rate required for recording is greatly reduced.

Similarly, parameters necessary for encoding the sub-picture data are set, and the encoded sub-picture data is created.

The encoded main video data, audio data and sub-video data are combined and converted into a video object set VOBS structure.

That is, main video data (video data)
Is set as the minimum unit of the above, and cell information as described with reference to FIG. 5 is created. Next, program chain P
The configuration of the cells constituting the GC, the attributes of the main video, the sub video, and the audio are set (a part of these attribute information uses information obtained when encoding each data). Then, a VMG file including various information is created.

The encoded main video data, audio data, and sub video data have a fixed size (204
8 bytes) (FIG. 3). Dummy packs are appropriately inserted into these packs. A time stamp such as a PTS (presentation time stamp) indicating a reproduction time and a DTS (decoding time stamp) indicating a decoding time are described in packs other than the dummy pack as appropriate. PTS of sub-picture
Can be described as a time arbitrarily delayed from the PTS of the main video data or audio data in the same reproduction time zone.

Each cell is arranged with an RDI pack (corresponding to a navigation pack) at the beginning of each video object unit VOBU so that each data can be reproduced in time code order. Thereby, the video object VOB composed of a plurality of cells
Is configured. A video object set VOBS obtained by collecting one or more video objects VOB is recorded in a movie video file.

When digitally copying a DVD reproduction signal from a DVD video player, the contents of the cell, program chain, management table, time stamp, and the like are determined from the beginning, so there is no need to create them again. . However, when a DVD video recorder is configured so that a DVD reproduction signal can be digitally copied, it is necessary to take a digital watermark and other copyright protection measures.

A portion for reading and writing (recording and / or reproducing) information on the optical disk 1001 includes a disk drive 35 having an optical system and a driving system,
Data processor 36, temporary storage unit 37, STC
(System time counter or system time clock) 38.

The temporary storage unit 37 stores the data processor 3
6. Buffer a certain amount of data (data output from the encoder unit 50) to be written to the optical disk 1001 via the disk drive 35, or reproduce from the optical disk 1001 via the disk drive 35 and the data processor 36. Data (decoder section 6
It is used to buffer a certain amount of the data (data input to 0). The disk drive 35 has a rotation control system for the optical disk, a laser drive system, an optical system, and the like.

For example, when the temporary storage unit 37 is composed of a 4 Mbyte semiconductor memory (DRAM), the average is 4 Mbps.
It is possible to buffer recording or reproduction data for approximately 8 seconds at a recording rate of (bits per second). When the temporary storage unit 37 is configured by a 16 Mbyte EEP (Electrically Eraseable and Programmable) ROM (flash memory),
It is possible to buffer recording or reproduction data for about 30 seconds at an average recording rate of 4 Mbps. Further, when the temporary storage section 37 is formed of a 100 Mbyte ultra-compact HDD (hard disk drive), it is possible to buffer recording or reproduction data for 3 minutes or more at an average recording rate of 4 Mbps.

The temporary storage section 37 can also be used to temporarily store recording information until the optical disk 1001 is replaced with a new disk when the optical disk 1001 is used up during recording.

Further, when a high-speed drive (double speed or higher) is employed as the disk drive 35, the temporary storage section 37 temporarily stores data extraly read from the normal drive within a certain time. Also available. If the read data at the time of reproduction is buffered in the temporary storage unit 37, the read data buffered in the temporary storage unit 37 can be switched and used even when a read error occurs in an optical head (not shown) due to vibration shock or the like. This makes it possible to prevent the reproduced video from being interrupted.

Although not shown in FIG. 1, if the information recording / reproducing apparatus is provided with an external card slot, the above-mentioned EEPR
The OM can be sold separately as an optional IC card. If an external drive slot or SCSI (Small Computer System Interface) is provided in the information recording / reproducing apparatus, the HDD can be sold separately as an optional extended drive.

Under the control of the microcomputer block 30, the data processor 36 supplies the DVD recording data output from the encoder unit 50 to the disk drive 35, and takes in the DVD reproduction signal reproduced from the optical disk 1001 from the disk drive 35. Alternatively, the management information recorded on the optical disc 1001 is rewritten, or the data (file or video object) recorded on the optical disc 1001 is deleted.

The microcomputer block 30 includes M
PU (microprocessing unit) or CPU
(Central processing unit), a ROM in which a control program and the like are written, and a RAM for providing a work area necessary for executing the program.

MP of microcomputer block 30
U uses the RAM as a work area to execute defect location detection, unrecorded area detection, recording information recording position setting, UDF recording, AV address setting, etc., according to the control program stored in the ROM.

The contents of the execution result of the MPU to be notified to the user of the disk drive 35 are displayed on the display unit 48 of the DVD video recorder, or displayed on the monitor display by OSD (on-screen display).

Note that the microcomputer block 30
However, the timing for controlling the disk drive 36, the data processor 36, the encoder unit 50 and / or the decoder unit 60, and the like can be executed based on the time data from the STC 38. Recording and playback operations are normally performed in synchronization with the time clock from the STC 38, but other processing may be performed at a timing independent of the STC 38.

The decoder section 60 includes a separator 62 for separating and extracting each pack from video information having a pack structure as shown in FIG. 3, a memory 63 used for performing pack separation and other signal processing, and a separator 62. V decoder 64 that decodes the main video data (contents of the video pack) separated by, SP decoder 65 that decodes the sub video data (contents of the sub video pack) separated by the separator 62, and the V decoder 64 that is separated by the separator 62 A decoder 68 for decoding the audio data (contents of the audio pack), and sub-video data obtained from the SP decoder 65 with the main video data obtained from the V decoder 64 as appropriate, and a menu, a highlight button, Video processor 66 for superimposing and outputting subtitles and other sub-pictures
It has.

The output of the video processor 66 is input to the video mixer 71. The video mixer 71 synthesizes text data. Also Video Mixer 7
1 is also connected to a line for directly taking in signals from the TV tuner 44 and the A / V input unit 42. The video mixer 71 is connected to a frame memory 72 used as a buffer. When the output of the video mixer 71 is a digital output, an interface (I / F)
73 to the outside, and in the case of analog output,
Output to the outside via the DAC 74.

If the output of the A decoder 68 is a digital output, it is output to the outside via an interface (I / F) 75. If it is an analog output, it is converted to an analog signal by a DAV 77 via a selector 76 and output to the outside. You. The selector 76 can select an output from the ADC 52 when directly monitoring a signal from the TV tuner 44 or the A / V input unit 42 based on a select signal from the microcomputer block 30. An analog audio signal is supplied to an external component (not shown) (a multi-channel stereo device having two to six channels).
Supplied to

The flow of a video signal in the above apparatus will be briefly described as follows.

First, the input AV signal is digitally converted by the ADC 52. The digital signal is input to each of the encoders 53, 54, 55. The video signal goes to the V encoder 53, the audio signal goes to the A encoder 54,
Character data such as teletext is input to the SP encoder 55. The video signal is subjected to MPEG compression, the audio signal is subjected to AC3 compression or MPEG audio compression, and the character data is subjected to run-length compression.

The compressed data from each encoder is packetized so that it becomes 2048 bytes when packed, and is input to the formatter 56. In the formatter 56, each packet is packed, multiplexed, and sent to the data processor 36.

Here, the formatter 56 creates an RDI pack based on the information from the aspect information detecting section 43 and arranges it at the head of the video object unit (VOBU).

Further, the encoder unit 50 writes the detected information in the aspect information in the sequence header of the MPEG video data based on the information from the aspect information detecting unit 43.

The data processor 36 forms an ECC block for every 16 packs, adds error correction data, and outputs the output to the optical disk 100 via the disk drive 35.
Record to 1.

Here, the temporary storage unit 37 (for example, an HDD buffer unit) is used when the disk drive 35 is in a busy state because of a seek operation or a track jump operation.
And waits until the DVD-RAM drive (disk drive 35) is ready.

Further, in the formatter 56, during recording,
Each segmentation information is created and periodically sent to the MPU of the microcomputer block 30 (information at the time of a GOP head interrupt, etc.).

The segmentation information includes the number of VOBU packs, the end address of the I picture from the VOBU head,
For example, the playback time of the VOBU.

At the same time, the information from the aspect information detector 43 is sent to the MPU at the start of recording, and the MPU creates VOB stream information (STI). Where STI is
It has a structure as shown in FIG. 7, in which resolution data, aspect data and the like are stored, and at the time of reproduction, each decoder section performs initial setting based on this information.

In the recording / reproducing DVD, one video file is recorded on one disk.

Here, in a real-time recording / reproducing apparatus using a DVD, a point to be noted is that, when accessing data, during data access (seek),
In order to continue reproduction without interruption, a minimum of consecutive sectors is required.

This unit is called CDA (Contiguous Data Area).

This CDA is more advantageously in ECC block units. Therefore, CDA size is 16
In the file system, recording is performed in CDA units. However, in this case, when there is no free space of the size of the CDA in the disk, a short sector used by another file is allowed to enter the CDA. Thereby, recording can be performed in CDA units.

Here, the recording process will be described with reference to FIGS.
This will be described according to the flow of FIG.

At the time of recording, the following processing is performed.

The file system of the optical disk (DVD-RAM) is checked. If there is no file system, the file system is constructed.

The directory of the DVD-RAM is checked, and if there is no RTR (real-time recording) directory, the directory is created.

The video manager information (VMGI) is read from the DVD-RAM into the work RAM, and if not, it is generated internally to construct a VMGI table.

The above-described processing is performed in step A, which is performed mainly by the microcomputer block 30.
1, A2, A3, A4, A5, and A6.

That is, while the DVD-RAM is loaded in the recording / reproducing apparatus, a file system check, a free area check, and the like are performed.

Initial recording is set in the encoder unit 50, and recording is started (step A7).

That is, the microcomputer block 30
Then, when the state in which recording is possible is confirmed, recording initial setting is performed. Further, as STC reset, setting of a write start address to a drive, setting of a write command, initial setting to a formatter, and setting of alignment processing,
The preparation setting of the division of the cell, VOBU, program (PG), and program chain (PGC) is performed.

Further, at the start of encoding, aspect information is read from the aspect information detecting section 43, and stream information (STI) is set according to the value (steps A7 and A8).

That is, at the start of recording, the encoder unit 50
A recording start command is set in the, and the division information in the formatter 56 is registered as a VOBU. Thus, when recording starts, the encoder unit 50 compresses the frames of the input video signal in GOP units, packs the GOPs, and collects the packs and organizes them in VOBU units. Aspect ratio information is inserted into the sequence header of the GOP (see FIG. 3).
(B)). Also, as the first pack of the VOBU, RD
An I-pack (see FIGS. 3B and 4) is arranged. At this time, as described in FIG. 3A, an audio pack, a sub-picture pack, and the like are also collected.

When the encoded data has accumulated for one CDA, each drive unit is set to record the data in a free area of the DVD-RAM, and the link information of the sector to be recorded is stored in the work RAM (A9).

When the separating information is accumulated in the formatter 56, the separating information is read and the VO is stored in the work RAM.
It is captured as BU management information, and is repeated until a recording end command is issued (steps A10, A11, A1).
2, A13).

That is, when data of one CDA (recording unit) is collected, the microcomputer block 30 determines a write address and a write length of data used by the drive 35 via the data processor 36, and issues a write command. . Next, the microcomputer block 30 checks whether or not there is an interrupt in the middle of capturing the isolation information, and captures the isolation information from the formatter 56 if there is no interrupt. Next, it is checked whether or not there is recording end key input information. If not, it is checked whether or not recording data for one CDA, which is the next recording unit, is stored in the formatter 56.

Here, in the encoder section 50, A
The V input unit 42 receives aspect information obtained by separating color signals, and sets information according to the aspect information in a sequence header of MPEG video data (see FIG. 3B) (performed by a V encoder). In addition, RDI
The same information is set for the pack, and M
Notified to PU (formatter).

The file system of the DVD-RAM is
Update based on link information.

VMG based on management information in work RAM
Update the file and record it on the disk (step A1)
4).

Since the STI has only the distinction of 4: 3 and 16: 9, the aspect information other than 4: 3 cannot be distinguished.

Therefore, in order to distinguish between the squeeze image and the pan scan image, the manufacture INF. Can also be recorded.

FIG. 9 simply shows the processing in the case where there is an interrupt in step A11 in FIG. When the interrupt information is detected, the cause of the interrupt is checked.
The data of the pack is transferred to the data processor 36, and the counting of the number of recording packs is started. Then, an interrupt flag is set each time one piece of separation information is fetched for packs that are being processed one after another by the formatter 56. This process is performed until the interruption is released.
When the interruption is released, the process proceeds to step A9, and it is determined whether or not there is one CDA from the number of recording packs. At the same time, the interrupt flag is deleted. This allows
Even if the interrupt processing is executed, the cell, VOBU, PG,
There is no loss of segmentation information for creating a PGC or the like. Note that the pack being interrupted is temporarily stored in the buffer memory 57.

FIG. 10 is a flowchart for checking the state of the S terminal at the start of recording. The present apparatus may detect the aspect ratio from the signal of the A / V input unit 42, or may detect the information of the aspect ratio from the color difference signal of the S terminal.

At the start of recording, it is detected whether or not the C signal at the S terminal has a DC component. As described above, the S terminal has a signal level of 5.0 (+0 to -1.5) V... 16: 9 squeezed signal and a signal level of 2.2 (+0.2 to +0.2) V as the level of the C signal. .. 4.3 letterbox signal Signal level 0V.

Therefore, as a simple method, when a DC level exists in the C signal, the stream information (ST
In I), the aspect ratio is described as 16: 9, and when the DC level is approximately 2.2 V or less, the aspect ratio is described as 3: 4.

The operation during reproduction will be described with reference to FIGS.

When reproduction is started, a disc check is performed to determine whether the disc is of the DVD format.
That is, whether there is a disk, whether there is a volume configuration, whether there is a DVD-RTR directory,
A check is made to see if there is an MG (step B)
1, B2, B3, B4, B5, B6). If there is a VMG, the VMG is read by the microcomputer block 30 (step B7). Further, it is checked whether a video file (see FIG. 2) exists (step B8). If a video file exists, a program chain to be reproduced is determined (step B9). As the program chain, as shown in FIG. 5, an original program chain (ORG_PGC) and a user-defined program chain (UD_PGC) can exist.

When the program chain is determined, the processing of the continuous data area (CDA) at the time of starting the reproduction is performed (step B10). Furthermore, VM corresponding to PGC
Read the contents of the stream information (STI) in G, MPE
Initial setting of the V decoder 64, SP decoder 65, and A decoder 68 for G video, reading of the aspect rate in the STI, and offset setting of the C signal at the S video terminal are performed (step B11).

Next, a cell reproduction process is specifically executed (step B12). Next, it is determined whether or not there is reproduction end information, and if not, the next cell to be reproduced is set from the program chain information (PGCI) (step B1).
4). Next, it is determined whether or not the setting conditions of the decoder should be changed (step B15). If so, when the next sequence end code is detected,
The setting of the decoder is changed (step B16). If it has not changed, and after the decoder setting is changed, it is determined whether or not the connection is seamless (step B17). If the connection is seamless, the process returns to step B12 to execute the next cell reproduction process.

If it is determined in step B17 that the connection is not seamless, the decoder unit 50 is set to the free-run mode, the seamless connection flag is set, and the flow returns to step B12 to execute the next cell reproduction.

If the reproduction end information is detected in step B13, other processes necessary for the end of reproduction are performed, and the processing is terminated (step B19).

FIGS. 13 and 14 show the processing at the time of cell reproduction in detail.

When the operation proceeds to the cell reproduction, the program chain information (PGCI) and the time map information (TMPI)
, The cell entry point EP (start EP, end EP) is recognized, and the cell start entry point is set as a read entry point (step C).
2). Next, the start address and the read length of the CDA to be read are set.

Next, it is determined whether the length of the CDA to be read is smaller than the remaining cell length. If the length is small, the remaining cell length can be updated by subtracting the CDA length to be read from the remaining cell length ( Step C4). Then, a read command is set to the drive 35 based on the CDA length to be read (step C5). CDA read in step C4
If the length is larger than the remaining cell length, the current read length is set to the remaining cell length, and the updated remaining cell length is set to zero.

When a read command is set to the drive 35, transfer is started, and it is checked whether one VOBU has been accumulated in the buffer (steps C8 and C8).
9). When data of one VOBU accumulates in the buffer, the data is transferred from the buffer to the separation unit 62 (C
10).

The microcomputer block 30
Then, it is determined whether or not there is an RDI pack at the beginning of the VOBU (step C11). Further, it is determined whether or not the aspect ratio information has changed from the information of the RDI pack as compared with the previous time (step C12). If there is a change in the aspect ratio information, S
The DC voltage of the video terminal (output terminal) is changed (step C13). Next, the seamless connection flag (SM in FIG. 6)
LI) is set, if not, it is determined in step C16 whether or not the data transfer has been completed. Set the read entry point. Then, the decoder 60 is set to the normal mode (step C1).
5). At this time, the system clock reference (S
CR), and resets the seamless connection flag that has been fetched so far, and proceeds to step C16 in preparation for reading the next VOBU. Step C
At 16, it is determined whether or not the transfer has been completed, and if completed, it is checked whether the remaining cell length is 0 or the same. If the remaining cell length is 0, the process returns to step B13 in FIG. If the remaining cell length is not 0, the process returns to step C3 in FIG.

If it is found in step C16 that the transfer has not been completed, it is checked whether or not there has been a key pull. If not, the flow returns to step C9. If it is determined that there is a key input, it is determined in steps C20 and C21 whether or not high speed is fast feed (FF) and high speed reverse feed (FR).

In the case of FF, the jump direction is set in the positive direction, the high-speed reading mode is set in the system according to the jump amount, and in the case of FR, the jump direction is set in the negative direction, and the high-speed reading mode is set in the system. Set. In this case, the processing of the CDA is set to the processing mode for the special reproduction (step C23).

The jump can be performed by various methods such as increasing the rotation speed of the disk or controlling the movement of the pickup.

As described above, at the time of reproduction, the apparatus of the present invention reads the initial state from STI at the start of reproduction and superimposes a voltage (FIG. 15) corresponding to the aspect information as a DC component of the color signal of the S video terminal. be able to.

Also, during playback, the contents of the RDI pack are checked, and if aspect information changes, a voltage (FIG. 15) corresponding to the aspect information is superimposed as the DC component of the color signal of the S video terminal.

FIG. 16 shows an example of the configuration of the aspect information detecting section 43.

FIG. 16A shows the block configuration, and FIG.
(B) is specifically shown at the circuit level. As shown in the block diagram, the S1 and S2 signals multiplexed on the input C signal are extracted through an amplifier 91 and a low-pass filter (LPF) or a band-pass filter (BPF) 92, and the values are A / D-converted. The data is converted into a value that can be read by a microprocessor unit or the like by a converter or a comparator 93, and is read by the MPU unit. Low pass filter (LPF)
Thus, a signal obtained by cutting the color signal is input to an A / D converter or the like.

Further, in this embodiment, the aspect information superimposed on the video signal of the S video terminal is described, but VBI (Video B) of the broadcast signal is described.
When the aspect information is included in ranking information, the aspect information can be extracted from the VBI and stored in the management area in the same manner.

As described above, a DVD recording / reproducing device corresponding to the aspect information of the S1 and S2 video terminals can be constructed. In other words, recording on a removable optical disc,
In the playback device, the aspect information detection unit 43
Extract aspect information from video signal. The aspect information is provided to the encoder unit 50. Encoder unit 5
0 and the microcomputer block 30 include means for setting a sequence header in MPEG video, an RDI pack, or an STI in VMGI based on aspect information. Further, any one of these, a combination thereof, or all of them may be set.

[0187]

As explained above, according to the present invention,
DVD compatible with aspect information of S1, S2 video terminals
You can get a recording / playback machine.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a DVD recording / reproducing apparatus to which the present invention is applied.

FIG. 2 is a diagram showing an example of a directory structure of a DVD.

FIG. 3 is an explanatory diagram showing a hierarchy and contents of a data structure according to a video object set (VOBS) according to the DVD standard and an MPEG standard.

FIG. 4 is an explanatory diagram of an RDI pack that is a main part of the present invention.

FIG. 5 is an explanatory diagram showing a hierarchical structure of a VMG in the DVD standard, particularly a hierarchical structure of a program chain.

FIG. 6 shows a hierarchical structure of VMG in the DVD standard, especially A
FIG. 3 is an explanatory diagram showing a hierarchical structure of a V file information table.

FIG. 7 shows a hierarchical structure of VMG in the DVD standard, especially A
FIG. 4 is an explanatory diagram showing a hierarchical structure of video stream information in a V file information table.

FIG. 8 is a flowchart illustrating a recording operation of the apparatus according to the present invention.

FIG. 9 is a diagram showing a part of the flowchart of FIG. 8;

FIG. 10 is a flowchart showing stream information (STI) setting processing when the apparatus according to the present invention operates.

FIG. 11 is a flowchart shown to explain a reproduction operation of the apparatus according to the present invention.

FIG. 12 is a flowchart showing a continuation of FIG. 11;

FIG. 13 is a flowchart for explaining a cell reproducing operation in the reproducing operation of the apparatus of the present invention.

FIG. 14 is a flowchart showing a continuation of FIG. 13;

FIG. 15 is an explanatory diagram of aspect information.

FIG. 16 is a diagram showing an example of an aspect information detection unit used in the present invention.

[Explanation of symbols]

Reference numeral 30: microcomputer block, 35: disk drive, 36: data processor, 37: temporary storage unit, 38: system time clock (STC), 42:
A / V input unit, 43 ... Aspect information detection unit, 44 ... T
V tuner, 50: encoder section, 60: decoder section.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 5/92 H04N 5/92 H 5D090 7/083 7/087 7/087 7/13 Z 7/088 7 / 24 (72) Inventor Yuji Ito 70 Yanagimachi, Yuki-ku, Kawasaki City, Kanagawa Prefecture F-term (reference) 5C052 AA02 AB04 CC11 DD04 5C053 FA24 GB06 GB38 HA33 JA03 JA21 KA04 KA24 LA06 5C059 MA00 PP16 RB09 RC00 RC04 RC32 SS13 5C063 AA06 AB03 BA14 CA25 CA29 CA34 DA07 DA13 DB02 EB45 5D044 AB07 BC06 CC04 DE17 DE43 DE52 GK08 5D090 AA01 BB03 BB04 CC01 CC04 DD03 EE20 GG28

Claims (8)

[Claims] 1. An apparatus for recording and reproducing video information by accessing a removable optical disk, comprising: an aspect information detection unit for extracting aspect information from an input video signal; and an aspect information detection unit for detecting the aspect information in a sequence header in MPEG video data. Means for setting aspect information based on the information detected by the section, and a DVD recording / reproducing apparatus. 2. An apparatus for recording and reproducing video information by accessing a removable optical disk, comprising: an aspect information detector for extracting aspect information from an input video signal; and an aspect information detector for a real-time data information (RDI) pack. A DVD recording / reproducing apparatus, comprising: a setting unit for setting aspect information based on the information detected in (1). 3. An apparatus for recording and reproducing video information by accessing a removable optical disk, comprising: an aspect information detection unit for extracting aspect information from an input video signal; and video manager information (VMGI) as management information of the optical disk. A DVD recording / reproducing apparatus, comprising: a setting unit for setting aspect information to the stream information (STI) based on the information detected by the aspect information detecting unit. 4. An apparatus for recording and reproducing video information by accessing a removable optical disk, comprising: an aspect information detection unit for extracting aspect information from an input video signal; and a sequence header in MPEG standard video data.
A video sequence header setting section for setting aspect information based on the information detected by the aspect information detection section; a pack setting section for setting the aspect information also in a real-time data information (RDI) pack; An STI setting unit for setting the aspect information also in stream information (STI) in video manager information (VMGI). 5. An apparatus for recording and reproducing video information by accessing a removable optical disk, wherein an aspect information at an initial stage of extracting aspect information from stream information (STI) in video manager information (VMGI) which is management information of the optical disk. Means for extracting aspect information; real-time data information (R
DI) Spectral information retrieving means for retrieving aspect information from a pack, and aspect information superimposing means for superimposing a direct current (DC) component on an S video terminal according to the content of the extracted aspect information. A DVD recording and reproducing device. 6. The aspect information detecting section includes: a DC component extracting unit that extracts a DC component from a color difference (C) signal of an S video terminal; and an analog-to-digital conversion unit that performs analog-to-digital conversion of the extracted DC component. The DVD recording / reproducing apparatus according to any one of claims 1 to 4, wherein: 7. The DVD recording / reproducing apparatus according to claim 1, wherein the aspect information detection unit has means for extracting aspect information from vertical blanking information (VBI). 8. An apparatus for recording and reproducing video information by accessing a removable optical disk, comprising: an aspect information detection unit for extracting aspect information from an input video signal; and stream information (STI) in video manager information (VMGI). An STI setting unit for setting aspect information based on the information detected by the aspect information detection unit; and an MFI setting for setting squeeze / pan scan information in the same as the manufacturer information (MNFI) in the video manager information (VMGI). A DVD recording / reproducing device, comprising: