JP3511571B2 - Optical disk medium and recording device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arrangement of data in an optical disc medium of an optical disc device for recording video and audio, an information recording / reproducing device and an optical disc management recording system thereof.

[0002]

2. Description of the Related Art Conventionally, as a recording method for an optical disc, the one described in JP-A-8-263969 is known. FIG. 23 shows the configuration of a conventional optical disc information management method. In FIG. 23, 901 is a lead-in area, and 9
Reference numeral 02 is a volume management information area, 903 is a volume information file, 904 is a video title set, 905 is an audio title set, 906 is a lead-out area, and 907 is a file.

The video title set 904 is composed of a plurality of files 907, each of which is divided into logical sectors. A plurality of title sets are managed by the volume information file 903. That is, in order to reproduce the data, the calling condition of the title set 904 including the data to be reproduced is searched from the volume information file 903 of the file 0, and then the information that determines the procedure for reproducing the file is retrieved from the title set 904. This is a mechanism for reproducing and reading the actual file 907 according to the procedure.

[0004]

However, in the above-mentioned conventional optical disc information management method, if the management information of the title set and a plurality of files are managed in units of each title set, the titles are changed according to the file size and the number of files in the title set. The size of the set changes.

In the usual information management method, regardless of the example shown in FIG. 20, the physical format of the disk is not taken into consideration.
In management according to the logical format, the physical format (ZCLV / Zo
When recording / reproducing on / from an optical disc which is a ne Constant Linear Velocity), the position where the file entity and the file management information is recorded may be arranged across the zone. In this case, the rewriting of the file entity and the rewriting of the file management information may be frequently repeated in different zones.

Generally, in an optical disk device such as the ZCLV system which varies the disk rotation speed for each zone,
When recording / reproducing is performed while moving the head between different zones, the access time increases due to the disk rotation speed settling wait time, and the power consumption increases due to the supply of acceleration / deceleration power to the motor to change the disk rotation speed. There is such a phenomenon. As described above, if the file is managed only by the logical format of the disk, there are problems such as waiting for rotation and increase in power consumption in the recording / reproducing operation at the time of frequent occurrence of zone crossing.

The present invention solves the above-mentioned conventional problems by providing an area in which the physical format of the disk is conscious in advance, and recording and reproducing the file entity and file management information in the logical format within the area. , ZCLV
An excellent optical disc medium that can suppress high-speed recording and low power consumption by minimizing zone crossing in a formatted optical disc.
And a recording device .

[0008]

In order to solve the above-mentioned problems, the present invention records video / audio data when recording video or audio information on an optical disc medium divided into a plurality of zones. A video / audio data area, an auxiliary information area for recording auxiliary information related to the video / audio data, a position where the audio / video data is recorded, and a position management information for managing the position where the auxiliary information is recorded An optical disk medium is provided in which an information area is provided and the capacity of each area is secured as a continuous area capable of coping with video recording / reproduction in one zone. With this, an area necessary for each zone is secured in advance in consideration of the physical format of the disk, and the file substance and the file management information are recorded / reproduced in the area, whereby an optical disk (especially ZCLV) composed of plural zones is formed. It is possible to obtain an excellent recording device capable of realizing high-speed recording and low power consumption by suppressing zone crossing in a format optical disc) as much as possible.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is an optical disk medium in which a recording area is divided into a plurality of zones in a radial direction, and an image and an audio are recorded in each zone.
At least one video audio data area for recording video and audio data with, said audiovisual data supplementary information recorded with you zone information area associated with the recording position of the supplementary information and the recording position of the video and audio data And a location management information area for recording location management information for managing
In each zone, the additional information corresponding to all the video / audio data recordable in the zone and the position management information are arranged in a recordable continuous area in the zone. This is a medium, and since the image data input in time series is continuously recorded in time series from the beginning of the continuous area, the occurrence of seeks is reduced, and a high speed recording / reproducing operation can be realized.

[0010] The invention according to claim 2 of the present invention, the amount of space the audiovisual data area of each zone <br/> emissions, and amount of space the position management information area, before Symbol with zone information territory and amount of space frequency region, an optical disc medium according to claim 1, characterized in that it is allocated substantially the same ratio in all zones, when the recording capacity of each zone of the optical disk are different, identical to the entire disk It has an effect that it can be effectively used according to the recording / reproducing system.

[0011] The invention described in claim 3 of the present invention, record region is divided into a plurality of zones in the radial direction, the disk rotational speed which is constant ZCLV (Zone by Constant in each zone
Using Linear Velocity) method, and provided with a spare area for substitution when the data can not be recorded by the disc defects for each zone, and the supplementary information area of each zone
The optical disc medium according to claim 1 or 2, wherein the position management information area and the spare area are provided in succession , and high-speed recording in the spare area when replacement occurs Has the effect of.

[0012] The invention described in claim 4 of the present invention, prior Symbol audiovisual data area and the location management information and the supplementary information region
The report area means that each is arranged as one file.
Preparative claims 1, wherein an optical disc medium of the serial <br/> mounting to claim 3, in the optical disk medium even from the information recording and reproducing apparatus other than the video recording and reproducing apparatus (personal computer) The recorded signal can be read, and the range of use of recorded data is widened.

According to a fifth aspect of the present invention, in the video / audio data area, the additional information area, and the position management information.
The disc usage information file recording disc usage information for managing the use state of each area of the distribution area, claims 1, characterized in that arranged on both the inner circumference or the outer circumference or the inner circumference and the outer circumference, wherein The optical disc medium according to any one of Items 4, wherein the utilization state of the optical disc can be quickly grasped by using the disc utilization information data, and when one of the disc utilization information files becomes unreadable by providing a plurality of disc utilization information files. It has the effect of enabling complementation.

[0014] The invention described in claim 6 of the present invention, the location management information before and Symbol audiovisual data area and the supplementary information region
The report area is an integer multiple of the block area for error correction, the start of each area matches the start logical block address of the error correction block, and the end of each area is the end logical block address of the error correction block. the preceding claims, characterized in that matches one of claims 5
An optical disc medium of crab described, an effect that the recording and reproduction of data can be performed at high speed in an optical disc employing the error correction scheme consists of a plurality logic blocks.

[0015]

[0016]

[0017] The invention according to claim 7 of the present invention, any claims 1, characterized in that assigning the supplementary information area in the recording area of the thumbnail data are representative screen of the video and audio data according to claim 6 it is obtained by the optical disk medium of crab described, an effect that can increase the search of audiovisual data using thumbnails.

The invention described in claim 8 of the present invention, claim
The optical disc medium according to any one of claims 1 to 7.
A recording device for recording information, wherein the optical disc stores the audiovisual data, the supplementary information, and the position management information.
Comprising a block recording control means for performing control to meet the error correction block units of media, the optical disk recording means for recording block data to the optical disc medium to generate in said block recording control means, and a control unit for controlling the entire device When recording the audiovisual data, the recording is correct.
Do not perform verify operation to confirm whether
To record the supplementary information or location management information.
The verify operation is executed when
It is a recording device that can perform high-speed recording by always performing recording in error correction block units, and it can be used for verification.
To ensure the reliability of recorded data, and
Switching according to the quality of data to be recorded
In, it has the effect of Ru can satisfy both fast and reliable.

[0019]

[0020]

[0021]

[0022]

The invention described in claim 9 of the present invention, claim
The optical disc medium according to any one of claims 1 to 7.
A recording apparatus for recording information, video and audio data recorded before Symbol audiovisual data area is recorded from the head of the audiovisual data area in the zone in the recording request order from the outside to the input order in the logical block size unit In the supplementary information area, one piece of supplementary information for one video / audio data in one zone is fixed data length increments, and the area next to the final position of the area.
The location management information area is overwritten as a cyclic memory for returning to the head position of the location management information area, and the location management information corresponding to the capacity of the recording range of the audiovisual data area in one zone is recorded in the audiovisual data. A recording device characterized by performing overwriting in fixed data length increments from the beginning of the area in the same order as that of recording, and recording / reproducing video / audio data and recording / reproducing additional information within one zone. It has the effect that it can be realized at high speed only by reproduction.

According to a tenth aspect of the present invention, when one video / audio data requested to be recorded does not fit in the video / audio data area during recording, the final logic of the video / audio data area is set. 10. The recording apparatus according to claim 9, wherein when the recording is completed up to the block, the incidental information and the position management information to be recorded in the zone where the recording is started are recorded at a predetermined position of the zone having the final recording position. Therefore, even in the case of recording video / audio data over a plurality of zones, there is an effect that the number of times of zone crossing can be reduced and high-speed recording can be realized.

According to an eleventh aspect of the present invention, in the case where the remaining capacity of the video / audio data area in the zone is less than the minimum data unit of the video / audio data when the recording of one video / audio data is completed. The recording device according to claim 9 or 10 , characterized in that the newly recorded video / audio data is not recorded in the area, and the video / audio data extending over a plurality of zones is eliminated. It has an effect that high-speed reproduction can be realized.

FIG. 1 shows an embodiment of the present invention.
It will be described with reference to FIGS.

(First Embodiment) FIG. 1 shows a divided view of a recording area in an optical disk. In FIG. 1, 1 is an optical disc, 2 is a zone divided into a plurality of regions in the radial direction, and 3 is a zone.
Is the sector address. The zone 2 is roughly divided into a user area 4 that can be used by the user for recording and reproducing arbitrary data, and a replacement area 5 when a replacement occurs. User area 4
Is a video and audio data area 6 for recording video and audio data.
, And an additional information area 7 for recording additional information about the video / audio data and a position management information area 8 for recording recording position information of the audio / video data and the additional information. Also,
When the minimum capacity of video / audio data is CV, one additional information capacity is CA, the location management information capacity is CM, one zone capacity is CZ, and the maximum number of recorded video / audio data is NZ, CZ = The zone is divided so that NZ × (CV + CA + CM) holds and each area becomes one continuous area.

A method of recording / reproducing data on / from the optical disc 1 configured as described above will be described. First, the video / audio data is the video / audio data 1, 2, 3, in chronological order.
The case where the data is input to the optical disc 1 in the order of 4 will be described.

First, when the video / audio data 1 is input, the video / audio data 1 is recorded from the beginning of the video / audio data area 6. In addition, as additional information regarding the video / audio data 1, data is created for the input time of the video / audio data or the condition at the time of recording. Since the supplementary information 1 is low-capacity data composed of predetermined items, the supplementary information 1 is recorded by a predetermined capacity size in order from the beginning of the supplementary information area.

Next, the position management area 8 is recorded with position management information 1 of a fixed capacity for managing the recorded position of the audiovisual data 1 and the recorded position of the incidental information 1. Even when the audiovisual data 2 and the supplementary information 2 are input,
As described above, the audiovisual data 1 in the audiovisual data area 6
The video / audio data 2 is recorded in the area immediately after, and is recorded in the area next to the incidental information 2 in the incidental information area 7. Then, the location management information 2 is recorded after the location management information area 1 of the location management information area 8. Hereinafter, the data is recorded in the area determined in the order of inputting the audiovisual data.

When reproducing the audiovisual data, first,
The position management information is read from the position management information area 8. From this, the data of the recording position information and the additional information recording position of the video / audio data requested to be reproduced is extracted. Next, by reading the recorded data from the designated position, it is possible to reproduce the video and audio and the supplementary information.

As described above, according to the present invention, by arranging a set of video / audio data, incidental information data, and position management information for managing their recording positions in one zone, all of them are set in the same zone. The data of can be recorded and reproduced. Therefore, even in a ZCLV optical disk, all data can be accessed without changing the rotation speed of the motor in the disk, and high speed recording / reproducing and low power consumption can be realized.

Further, by arranging each data in a continuous area in time sequence, it is possible to realize a high-speed processing even when only the additional information is read and used as search data. It should be noted that, although the description has been given here as the video / audio data, the same effect can be obtained when recording general data (database, large-capacity text data, graphics data, etc.) other than the video / audio data having a certain capacity.

(Second Embodiment) FIG. 2 shows a distribution state of areas for each zone. FIG. 2 exemplifies a case where the entire disc is divided into five zones (1 to 5), and each zone records a video / audio data area 30 for recording video / audio data and additional information. The additional information area 31 and the position management information area 32 for recording the recording position information are arranged in a continuous area. At this time, the area capacity of the video and audio data area of zone 1 is set to CVA.
1, the area capacity of the incidental information area is CAA1, and the area capacity of the location management information area is CMA1. In addition, the respective area capacities of zone 2 to zone 5 are CVA2, CAA2, CMA2,
... CVA5, CAA5, and CMA5.

At this time, in the ZCLV disc, the recordable capacity varies depending on the zone, and the recording capacity becomes larger in the outer peripheral zone. Therefore, as shown in the first embodiment, assuming that the area allocation of each zone is performed by the minimum capacity of data handled as video / audio data and the number of recorded sheets, the area allocation capacity in the zone capacity is as follows. Allocation to relationships is the best way to effectively use the entire disk.

CVA1: CAA1: CMA1 = CVA
2: CAA2: CMA2 = ... = CVA5: CAA
5: CMA5

As described above, according to the embodiment of the present invention, by making the area distribution ratio in each zone the same in the entire disk, the data management method closed in the zone is the same in all the zones in the entire disk. The method can be managed and the data recording / reproduction on the entire disc can be effectively used.

(Third Embodiment) FIG. 3 shows the distribution of areas in each zone. In FIG. 3, reference numeral 40 is a user area, 41 is a replacement area which is an alternative area when data cannot be recorded due to a disk defect, a user area 40 is a video / audio data area 42, an auxiliary information area 43, and 44. Is divided into location management information areas. Generally, the replacement area is located at the innermost or outermost circumference of the disc.
Further, in a ZCLV optical disc, it is often provided for each zone on the inner or outer circumference side of the zone.

FIG. 3A shows a case where the spare area 41 is provided on the outer peripheral side of the zone, and FIG. 3B shows a case where the spare area 41 is provided on the inner peripheral side of the zone. Data is recorded in the replacement area 41 because data is once recorded in a designated location in the user area, and the verify operation is performed to read the data again and confirm whether the data is correctly recorded. This is the case when it is determined that recording is impossible.

That is, in the area where the data recording and verify operations are performed, data recording may occur in the alternate area. For example, in the case of processing data for a computer, if even one byte of data is lost, it often hinders the processing, but with time-series video and audio data,
Even if some bytes are lost, the video and audio will be shaken, and in many cases it will not be a practical problem. On the other hand, for audiovisual data that needs to record and reproduce a large amount of data in time series, if the recording operation and the verify operation are performed at the time of recording, the necessary data may not be recorded due to a reduction in the amount of data that can be recorded in a unit time. .

Therefore, it is possible to consider a method of recording the video / audio data without executing the verification. It is necessary to verify the recording state of the position management information and the incidental information, which cannot be correctly reproduced if even one byte is lost, at the time of recording.

In this embodiment, as shown in FIG. 3, ZCLV is used.
The auxiliary information area and the position management information area are arranged on the side of the disc near the spare area where recording and reproduction are possible at the same number of revolutions. That is, when there is an area in which the verify operation is not performed and an area in which the verify operation is performed in one zone, the verify operation execution area in which replacement may occur with respect to the disk defect is closer to the replacement area. By arranging in the above, it is possible to suppress the head moving distance at the time of occurrence of replacement and realize high-speed replacement processing. In particular, by arranging the ZCLV optical disc on the side closer to the replacement area where the rotation speed is the same, it is not necessary to change the rotation speed of the disk, and the replacement process can be performed more quickly.

(Fourth Embodiment) FIG. 4 shows an example of an in-disk area management method for a video / audio data area, an accompanying information area, and a position management information area. Here, FAT (File Allocation Ta), which is a file system often used by an OS (operation system) such as a personal computer
ble) method as an example.

In FIG. 4, 50 is a rewritable user area on the disc, 51 is a FAT area, 52 is a directory area, and 53 is a data area. FAT area 51
Indicates the file connection state according to the cluster or sector number of the data area. In the directory area 52,
File name and first cluster (sector) of the file name
File management information including FAT information is recorded. The data area 53 is the audiovisual data area of the present invention,
The incidental information area and the position management information area are arranged in consideration of zone division as in the first to third embodiments.

First, the operation of reading data on the disk from the OS side will be described. First, it is necessary to know the file name, attribute, and recording position of the access target. Therefore, the file management information in the directory area is searched for the existence of the access target file. If the file exists, the FAT information is read. From the FAT, the order information of the clusters (sectors) forming the file or the free information of the disk can be obtained. Therefore, the contents of the file recorded in the data area are read in the order specified by the FAT.

Next, the operation of recording data on the disc from the OS side will be described. First, check the free space where the specified file can be recorded. This is FAT
It can be obtained from the availability information in. Next, the data is sequentially recorded in the vacant area. At this time, the connection state of the data is recorded in the FAT. Further, the file name, attributes, and head recording position of the recorded file are additionally recorded in the file management information in the directory area. By constructing the data and area allocation necessary for executing the above-mentioned operations consistently in the disk, it becomes possible to confirm the existence of the file and read / write the file data from the OS side.

Therefore, in the present invention, the file arrangement as shown in FIG. 4 enables access from the OS and realizes the operations described in the first to third embodiments. From the OS, the video / audio data file that recognizes the entire audiovisual data area as one file on the disc, the auxiliary information file that recognizes the entire auxiliary information area as one file, and the entire location management information area
Recognize three files, one of which is the location management information file. Further, each file secures an area determined as an occupied area even if actual data is not recorded in the content.

For example, as shown in FIG. 4, it is assumed that the entire disk is composed of 3 zones of 17h clusters (sectors). The video / audio data file has cluster (sector) numbers 1 → 2 → 3 → 8 → 9 → A → B → 10 → 11 → 1
Areas are allocated so that the files can be recognized by the connection of 2 → 13, and this connection information is recorded in the FAT area. Similarly, the supplementary information file is a cluster (sector).
The number 4 → 5 → C → D → 14 → 15 concatenated files and location management information files are cluster (sector) numbers 6 → 7.
The information is recorded in the FAT area as a concatenated file of → E → F → 16 → 17. Further, in the file management information of the directory area, a video / audio data file, an additional information file, a position management information file name, respective attributes, and a head cluster (sector) number are recorded.

This setting is executed when the disk is initialized. As a result, all clusters in the disk are occupied by one audiovisual data file, one additional information file, location management information file, and directory, and each file is allocated with a capacity determined for each zone. Become. At the time of actual recording / reproducing of data, the video recording / reproducing apparatus which handles this disc directly accesses the designated cluster number.

In addition to this device for managing actual data recording / reproducing, for example, a personal computer or the like can recognize the existence of files in this disc, and if dedicated application software operating on the personal computer is used, It is also possible to refer to the contents of, and it is possible to expand the versatility of the disc. Although the FAT method is used here, the UDF (Universal) used in the rewritable disc is used.
Even in the case of using Disk Format) or the like, it is possible to obtain the same effect by conforming to the file recognition method in UDF and arranging each file area in consideration of zone boundaries.

(Fifth Embodiment) FIG. 5 is a schematic diagram of file arrangement in a fifth embodiment of the present invention.
In FIG. 5, the case where the disc is divided into two zones is taken as an example. In the figure, 60 is a system area for constructing a disk file system, 61 is a video / audio data area, 62 is an auxiliary information area, and 63 is a position management information area, which are arranged in consideration of zone boundaries. . Reference numeral 64 is a disk usage information file on the inner circumference side of the disk, and 65 is a disk usage information file on the outer circumference side of the disk.

Here, the method of arranging the video / audio data area, the supplementary information area, and the position management information area and the access method are as described in the second or fourth embodiment. Since each area is recognized as one file by the OS at the time of disk initialization, it is difficult to know how much data is actually recorded in this area. Therefore, a disk usage information file for recording the usage status of these areas (for example, unused capacity and the position where recording should be started next) is provided. Then, by reading this disk usage information file immediately after mounting the disk, the usage status of the disk can be grasped instantly, and the subsequent usage becomes easy.

Since the data capacity of the disk utilization information file is not so large, it may be arranged at an appropriate position on the disk, but since it is accessed when the disk is mounted,
It is suitable to place it near the system area. Also,
When the disk usage information file is provided on the inner circumference, by providing the backup disk usage information file on the outer circumference of the disk, even if one file is damaged, the other file is read and the desired purpose is read. Can be achieved.

(Sixth Embodiment) FIG. 6 is a schematic diagram of file arrangement in a sixth embodiment of the present invention.
In FIG. 6, one zone in the disc will be described as an example.
In the figure, 70 is a video / audio data area, 71 is a supplementary information area, 72 is a position management information area, 73 is a sector structure near the beginning of the video / audio data area 70, 74 is a video / audio data area 70 and supplementary information. The sector structure near the boundary of the area 71 and the sector structure 75 near the boundary of the incidental information area 71 and the position management information area 72 are shown.

When a recording / reproducing error occurs in data, an optical disc is generally added with an error correction code for correcting the error and correcting the data into correct data. The error correction code is configured with an integral multiple of the size of the sector, which is the smallest physical unit, as one unit. For example, 1
A hard disk drive that configures error correction within a sector, or a sector capacity of 2 kbytes and an error correction range of 3
There is a DVD (digital video disc) which is a unit of 2 kbytes.

Here, when error correction is made up of a plurality of sectors, the start and end positions of an area such as a video / audio data area are distributed so as to coincide with the boundaries of the error correction range (ECC block). . When recording data that does not fill the ECC block, it is necessary to first read the already recorded data, change only the portion to be rewritten, and record the ECC block again. On the other hand, in the case of recording the data that matches the ECC block, the designated ECC block may be recorded as it is, and the recording time can be shortened by reading the first existing data.

Therefore, the boundary between different types of data is EC
If it matches the C block boundary, the
Since the CC block is recorded, the recording time is shortened and the area is easily managed.

(Seventh Embodiment) FIG. 7 is a schematic diagram of a data structure of video / audio data according to a seventh embodiment of the present invention. 7 (1) shows the case where the video / audio input is for one channel, and (2) shows the case for two channels. Figure 7
In (1), 140 is a camera, 141 is a microphone, and 1
Reference numeral 42 is a video-side binarization compression unit, 143 is an audio-side binarization compression unit, and 144 is a signal synthesis unit that generates video-audio data.

First, the video image taken by the camera 140 is input to the binarization compression unit 142 in frame units (or field units) and at regular time intervals. Binary compression unit 1
At 42, the video signal is converted into a binary signal, the information is compressed, and a digital video signal is output. The compression method is J
Examples include PEG, MPEG1, and MPRG2. After compression, a plurality of digital video signals Va1, Va2, Va3,
Va4 is output.

The sound collected by the microphone 141 is input to the binarizing and compressing section 143 as a time signal. The binarizing and compressing unit 143 quantizes the audio signal at a specified sampling frequency, compresses it as necessary, and outputs the digital audio signal Aa. The digital video data and the digital audio data are put together in a prescribed format in the signal synthesizing unit 144 to be one integrated video / audio data. This video / audio data is recorded on the optical disc.

FIG. 7 (1) shows an example in which four video images are combined into one video / audio data. in this case,
It is easier to manage the data necessary for reproduction, such as the division of video data and audio data and the number of videos, in the audiovisual data. Therefore, necessary supplementary information (number of images, compression information, etc.) Da is also included in the audiovisual data.

In FIG. 7B, 150 is a camera a,
151 is a microphone a, 152 is a camera b, 153 is a microphone b, and 154 and 155 are two cameras a and b, respectively.
The binarizing and compressing units, 156 and 157 are binarizing and compressing units for the microphone a and the microphone b, respectively, and 158 is a signal synthesizing unit for generating video / audio data. Camera a150, camera b152
To digital video signals Va1, Va2, Va3 and V
b1, Vb2 and Vb3 are generated, and the digital audio signals Aa and Ab are output from the microphone a151 and the microphone b153, respectively.
Is generated as described above.

The signal synthesizing unit 158 generates video / audio data in which the digital video signal and the digital audio signal are combined as data of one event from both cameras and both microphones.
At this time, as described with reference to FIG. 7 (1), it is easier to manage incidental information that is closely related to the distinction between cameras and the like, as shown in FIG. Db
To provide.

According to the present invention, the auxiliary information that is closely related to the reproduction of the video / audio data is arranged in one group of the video / audio data so that the video / audio data can be read out.
There is an advantage that actual video / audio can be realized. Note that the method and content of arranging the supplementary information may be appropriately changed depending on the characteristics of the device.

(Eighth Embodiment) FIG. 8 is a schematic diagram of area distribution in the eighth embodiment of the present invention. Figure 8
Shows a case where the auxiliary information area is not provided in the first embodiment. In this case, in the video recording / reproducing apparatus that does not require the additional information area, the additional information area is not provided, and the amount of the corresponding amount is recorded in the audio and video data area 6 and the position management information area 8 by allocating the capacity. Can be increased. Even when the additional information area is not provided, it is desirable that the area boundary between the video / audio data area 6 and the position management information area 8 is aligned with the boundary of the error correction block, as described in the sixth embodiment.

(Ninth Embodiment) FIG. 9 is a schematic diagram of area distribution in the ninth embodiment of the present invention. Figure 9
Shows a state in which a plurality of additional information areas are provided in the first embodiment, and one of them is assigned to an area for recording thumbnail data.

In a video recording / reproducing apparatus, a thumbnail screen, which is a representative screen of video, is often used in searching for recorded video. The thumbnail screen is a video compressed to a size and resolution of the scene where the contents of the video and audio data can be understood, and multiple thumbnails can be arranged on one screen of the display device, and the video to be played from this thumbnail list. Searchability can be improved by searching for voice data.

Therefore, as shown in FIG. 9, the thumbnail area 9
Is provided as an additional information area. The thumbnail area 9 secures an area capacity enough to record all the thumbnails of the maximum number NZ of video record data that can be recorded in the same zone, as in the first embodiment.

As described above, according to the present invention, the searchability can be improved by providing the thumbnail area for recording the thumbnail data used for searching the audiovisual data. Note that the thumbnail data has a larger data amount than the supplementary information such as the recording conditions. Therefore, when recording the thumbnail data, a recording operation that does not perform verification is used as in the recording of the video / audio data, so that the recording speed is higher. Can be realized.

(Tenth Embodiment) FIG. 10 is a block diagram of a video recording / reproducing apparatus using an optical disc according to a tenth embodiment of the present invention. In FIG. 10, 8
0 is a coding means for generating video / audio data from which a signal amount is reduced by band compression from a binary signal of video or audio,
Reference numeral 81 is a video / audio data memory that temporarily stores the video / audio data, 82 is an additional information memory that temporarily stores additional information that is digital information related to the input video / audio data, and 83 is the video / audio data and incidental data. A position management information memory for temporarily storing position management information, which is an address on the optical disc on which information is recorded, 84 is a disk usage information memory for temporarily storing the usage status of the optical disk, 8
5 is a block recording control means for managing the recording unit of data on the optical disk, 86 is the optical disk described in the first to sixth embodiments of the present invention, and 87 is an optical disk device for recording or reproducing data with the optical disk 86. , 88 are control units that manage the control sequence of each block.

The operation of the video recording / reproducing apparatus of the present invention will be described with reference to FIG. First, a video / audio signal captured by a camera or the like is converted from an analog signal into a binarized signal and input to the encoding means 80 as a digital video / audio signal. Alternatively, a digital video / audio signal from a device already treated as a binarized signal may be directly input to the encoding means. The audiovisual signal input to the encoding means 80 is
As it is, the signal band is very wide and often exceeds the amount of data that a recording device such as an optical disk can handle. Therefore, in the encoding means 80, the input signal is compressed and reduced to the amount of data that can be handled by the recording device. Commonly used compression methods are JPEG, MPEG1, MPEG2,
There are wavelet transforms.

The compressed audiovisual data is temporarily stored in the audiovisual data memory 81. This memory 81
As a semiconductor memory. At this time, incidental information such as input time and photographing condition is generated by the control unit 88 as information related to the input audiovisual data, and is stored in the incidental information memory 82.

Next, the data in the video / audio data memory 81 is input to the block recording control means 85, and the data size is matched with the error correction block (ECC block) boundary of the disk, and the recording address is designated to specify the optical disk device. Output to 87. The optical disk device 87 records data on the optical disk 86 based on a command from the block recording control means 85. At this time, the recording position is ECC
Since it matches the block, quick recording can be realized.

The recorded position of the video / audio data is stored in the position management information memory 83 from the block recording control means 85 through the control unit 88. Next, after recording the audiovisual data, the supplementary information is recorded on the optical disc 86.
Since the amount of additional information is generally small, a plurality of video / audio data are collectively recorded in order to make all ECC blocks new data. That is, when the additional information is recorded for each video / audio data, seek frequently occurs between both recording areas, and the effective recording responsiveness deteriorates. Therefore, for data with a small amount of information, high-speed recording can be realized by performing a single disk recording operation on a plurality of video / audio data.

The supplementary information is sequentially stored in the supplementary information memory 82, and at the same time, the recording position where the supplementary information is recorded on the disk is also stored in the position management information memory 83. Since the location management information memory 83 has a small amount of location management information for one video / audio data in the same manner as the additional information memory 82, a plurality of video / audio data are collectively recorded on the disc. It is preferable that the timing of recording the incidental information and the position management information on the optical disc 86 is executed when the ECC blocks are accumulated. If there are few input signals and there is a margin for recording, there is no problem in recording on the disc in a state where the ECC block is not accumulated.

FIG. 11 shows the operation of the block recording control means 85, and the management of incidental information will be described as an example. It is assumed that 12 pieces of additional information can be recorded in the ECC block. For information having a small amount of data such as supplementary information, data at a position to be recorded in advance is read out from the disc in advance. This is DT1-
It is designated as DT12. When the additional information DT21 for the newly input video / audio data is recorded at the position (1) in the figure, the data portion DT1 of (1) is replaced with DT2.
Rewrite to 1. Unchanged data part (2)-(1
2) remains as it is. If an ECC block is to be recorded on the disc in this state, one ECC block in the incidental information memory is recorded on the disc through the block recording control means 85.

By this operation, it becomes possible to perform the recording at a high speed as compared with the case where the rewriting data less than the ECC block is frequently recorded on the disk. The disk usage information memory 84 includes audiovisual data, additional information,
The control unit 88 manages the recording status of position management information and the like, and stores the result. Similarly to the supplementary information, the disc use information memory 84 also records on the optical disc via the block recording control means 85. When the frequency of recording on the optical disk is low, the recording may be performed in logical block units instead of ECC block units.

(Eleventh Embodiment) FIG. 12 is a block diagram of a video recording / reproducing apparatus using an optical disc according to an eleventh embodiment of the present invention. In FIG. 12, 8
0 is a coding means for generating video / audio data from which a signal amount is reduced by band compression from a binary signal of video or audio,
Reference numeral 81 is a video / audio data memory for temporarily storing the video / audio data, 82 is an auxiliary information memory for temporarily storing additional information which is digital information related to the input video / audio data, and 83 is the video / audio data and the auxiliary information. A position management information memory for temporarily storing position management information, which is an address on the optical disc on which information is recorded, 84 is a disk usage information memory for temporarily storing the usage status of the optical disk, 8
5 is a block recording control means for managing the recording unit of data on the optical disk, 86 is the optical disk described in the first to sixth embodiments of the present invention, and 87 is an optical disk device for recording or reproducing data with the optical disk 86. , 88 are control units that manage the control sequences of the respective blocks, and perform the same operations as in the tenth embodiment. Reference numeral 89 denotes a verify control means for controlling a verify operation for confirming whether or not the data is correctly recorded on the optical disk 86 by the optical disk device 87.

The operation of the video recording / reproducing apparatus of the present invention will be described with reference to FIG. First, a video / audio signal captured by a camera or the like is input to the encoding means as a digital video / audio signal. The video / audio signal input to the encoding means 80 is compressed by the encoding means to reduce the amount of data that can be handled by the recording device. The compressed audiovisual data is temporarily stored in the audiovisual data memory 81.

At this time, incidental information such as the input time and photographing conditions is generated by the control unit as information relating to the video / audio data just input, and is stored in the incidental information memory 82. Next, the data in the video / audio data memory 81 is input to the block recording control means 85, the data size is matched with the ECC block boundary of the disc, and the recording address is designated and output to the optical disc device 87. The operation up to this point is the same as the operation described in the tenth embodiment.

Generally, when an optical disc apparatus records information on an optical disc, first, the information to be recorded is recorded at a predetermined position. Next, the information that has just been recorded is read out and compared to see if it matches the information that should be recorded. This read / comparison operation is called a verify operation. As a result of the comparison, if the read information and the information to be recorded match, it is determined that the recording was correctly performed on the optical disc. However, if the comparison results do not match, it is determined that correct recording was not performed, and error processing is executed. The error handling method differs depending on the optical disc device, but for example,
It is a general operation to record again at the same position, to complete recording if the verification results match, and to record to the alternate area if they do not match again.

As described above, the recording operation and the verifying operation are normally executed as a set, but in this case, naturally, it takes time for the verifying operation execution time, and the amount of information to be recorded on the disk within the unit time is completed. Is reduced. Therefore, if a large amount of data is continuously input in time and audio data, if recording and verifying are always executed, the recording rate will not meet the input rate and the input data will be thinned or the input rate will be reduced. There is a concern that the image quality may be deteriorated by limiting more than necessary.

However, the probability that an error will occur in the verify operation during recording is extremely low, and in most cases correct recording is normally performed in the first recording operation. That is, the verify operation is a function aiming to make the loss of information zero. In general, even if an error occurs in a very small amount of data in the middle of video and audio data, it is often not perceived by human beings to be a problem, and a verify operation is executed to record the error to record it. In many cases, it is possible to increase the convenience of the apparatus by increasing the recording rate even if the error in the allowable range is recognized without performing the verify operation, rather than decreasing the rate.

Therefore, when the video / audio data is recorded, the verify operation is stopped through the verify control means 89 from the control unit 88 so that only the recording operation is performed without executing the verify operation. On the other hand, when recording the incidental information or the position management information which has a small amount of information and is reluctant to lose the information, the verify operation is executed from the control unit 88 through the verify control means 89.

That is, in the present embodiment, the verify control means 89 is used to stop the verify operation when recording the audiovisual data and execute the verify operation when recording the supplementary information and the position management information. The responsiveness at the time of recording the video signal on the optical disc 86 can be improved. When the thumbnail data is recorded as the additional information as shown in the ninth embodiment, the verify operation may be stopped in the thumbnail area.

(Twelfth Embodiment) FIG. 13 is a block diagram of a video recording / reproducing apparatus using an optical disc according to a twelfth embodiment of the present invention. In FIG. 13, 8
0 is a coding means for generating video / audio data from which a signal amount is reduced by band compression from a binary signal of video or audio,
Reference numeral 81 is a video / audio data memory for temporarily storing the video / audio data, 82 is an auxiliary information memory for temporarily storing additional information which is digital information related to the input video / audio data, and 83 is the video / audio data and the auxiliary information. A position management information memory for temporarily storing position management information, which is an address on the optical disc on which information is recorded, 84 is a disk usage information memory for temporarily storing the usage status of the optical disk, 8
5 is a block recording control means for managing the recording unit of data on the optical disk, 86 is the optical disk described in the first to sixth embodiments of the present invention, and 87 is an optical disk device for recording or reproducing data with the optical disk 86. Reference numeral 88 is a control unit for managing the control sequence of each block, and 89 is a verify control means for controlling a verify operation for confirming whether or not the optical disk device 87 has correctly recorded on the optical disk 86. It operates in the same manner as in the form. Reference numerals 90, 91, and 92 are non-volatile memories or backup memories (SRAM) that can retain information even when the power of the apparatus main body is turned off.

The operation of the video recording / reproducing apparatus of the present invention will be described with reference to FIG. The operation from the input of the video or audio signal to the recording on the optical disc is the same as that of the eleventh embodiment. In the present invention, the supplementary information, the location management information, and the disc utilization information temporarily stored in the supplementary information memory 82, the position management information memory 83, and the disc utilization information memory 84 include the recording position of video / audio data, conditions, and the like. Since the information is included, if the information is lost, the information recorded in the optical disc cannot be reproduced.

DRAMs are often used as semiconductor memories used for temporary storage of data in recent years because of cost reasons. Normally, when the power of the video recording / reproducing apparatus is ON, the information in the memories 82, 83, 84 is not lost, but when the power is turned OFF or the apparatus power is intentionally turned OFF, the data in the memory is lost. I will be destroyed. Since the data in the memories 82, 83, and 84 are usually written infrequently on the disc, there is a possibility that the data in the memories 82, 83, and 84 may include information on the audiovisual data already recorded on the optical disc. In this case, if the related information is not recorded on the optical disc,
Video and audio data cannot be played. Therefore, the auxiliary information, the position management information, and the disk usage information that have not been recorded on the optical disk are held in the backup memories 90, 91, and 92.

FIG. 14 shows a timing chart of the memory backup operation. First, the audiovisual signals AV1 and A
V2, ... Are input, and are subjected to signal processing and recorded on the disc as video and audio data. Audiovisual data AV
At the time when the recording of 1 is completed, the supplementary information of AV1 and the recorded position information DT1 are generated and recorded in the memory for related information (supplementary information memory, position management information memory, disk usage information memory), and at the same time, The backup memories 90, 91 and 92 are also copied and managed as DT1B.

At the same time, a bit for detecting the presence / absence of related information whose recording on the optical disc is not completed is provided in a specific bit of the disc utilization information memory 84. Here, when the bit is 1, it indicates that there is related information that is not recorded. The contents of this disk usage information memory are also copied to the backup memory 92. In the figure, related information is recorded on the optical disc for every three video / audio data, and when the recording of AV3 is completed, DT1, DT2, D in the memory are recorded.
T3 is recorded on the optical disc. Then, the recorded information bit is cleared.

Subsequently, the same applies when AV4, AV5, and AV6 are input, but if an abnormal power-off of the apparatus main body occurs during recording of AV6, AV4 and AV5 are correctly recorded, but DT4 and DT5 inside
Disappears. However, when the main body power is turned on again, the control unit 88 reads the backup memory 92 including the recorded information bits, detects the presence of the related information that is not recorded on the optical disc 86, and the backup memories 90 and 91. , DT4B and DT5B in 92 are recorded on the optical disc 86. By doing this, AV4, AV
With respect to No. 5, the data management information is restored even after the abnormal power supply is turned off, and the data can be correctly reproduced.

As described above, by holding the related information in the backup memory, it is possible to minimize the loss of data at the time of abnormal power supply. When the recording is controlled in units of ECC blocks as in this device, the backup memory capacity can be set to an integral multiple of the ECC block capacity to easily record the backup information at the time of restoration.

(Thirteenth Embodiment) FIG. 15 is an explanatory diagram of a data area distribution method inside an optical disk medium according to a thirteenth embodiment of the present invention. In FIG. 15, 1
01 is a video / audio data area, 102 is an auxiliary information area, 1
Reference numeral 03 is a position management information area, 104 is an error correction block, 105 is a logical block, 106 is the minimum data of one video / audio data, 107 is one additional information data, 1
08 is one piece of position management information data. FIG. 15 shows an area allocation method within one zone, but description will be given assuming that each zone in the optical disk is similarly arranged. Here, it is assumed that one error correction block is composed of three logical blocks and one zone is 17 error correction blocks.

First, the video handled by the video recording / reproducing apparatus
Determine the volume of audio data. For example, when considering video compression by JPEG, the still image size of one video frame (which may include audio data) is considered as the minimum data amount CV. When handling a plurality of compression ratios and screen sizes, the minimum amount of data in the video to be handled is CV. CV is an integer multiple of the logic block, and here CV = 5 logic blocks.

It is assumed that the size CA of the incidental information for one video / audio data is 4CA, which is one logical block. For example, when one logical block has 512 bytes, CA = 128 bytes. As much as possible, it is preferable that an integral multiple of CA matches one logical block capacity.
Further, it is assumed that the size CM of the position management information for one video / audio data is 6 CM, which is one logical block. It is desirable that an integer multiple of CM matches one logical block capacity. The position where the audiovisual data is recorded and the position where the incidental information is recorded are recorded in the position management information.

A detailed description will be given below with reference to FIG. 1
Zones are divided according to the following rules. The audiovisual data area, the supplementary method area, and the position management information area are always divided into continuous areas each having an integral multiple of the error correction block. The video / audio data area is preferably an integral multiple of the minimum video / audio data amount CV. 1 incidental information does not span two logical blocks as much as possible. The additional information area is provided with the maximum number of recorded sheets NZ × CA or more. One location management information does not extend over two logical blocks. The position management information area is provided with the maximum number of recorded sheets NZ × CM or more.

In FIG. 15, 17 error correction blocks in one zone are designated as B1 to 17 in order, and one error correction block is composed of 3 logical blocks. The logical blocks are numbered S1 to S51 in order from the beginning of the zone. First, since 1 CV consists of 5 logical blocks, the video and audio data area has 15 error correction blocks (B
1 to B15) are assigned. In this case, a maximum of 9 (NZ) video / audio data can be recorded in the zone. Therefore, it is necessary to secure a capacity of at least 9 CA and 9 CM or more for the rule, the supplementary information area, and the location management information area.

In the supplementary information, one logical block is 4 CA, so it is necessary to allocate three logical blocks (one error correction block B16) considering the procedure. Further, in the position management information, since 6 CMs are allocated to 1 logical block, 3 logical blocks (1 error correction block B17) are allocated from the procedure. As a result, the entire area (capacity CZ) in one zone can be divided into three areas. If the allocation results in excess or deficiency in capacity, the division may be repeated again while adjusting the maximum number NZ of video and audio data that can be recorded in one zone. The additional information and the position management information area, which are divided into error correction block units, secure a necessary capacity from the beginning, and the remaining area is treated as dummy data.

FIG. 16 shows an example of area allocation when one zone capacity is 18 error correction blocks B1 to B18. If NZ = 9 is allocated here, the three areas can be allocated without excess or deficiency. At this time, B1 to B16 are added to the video / audio data area.
Is allocated, so that a margin for 3 logical blocks is provided. When the video / audio data area has a fractional logical block as described above, the additional information and the position management information are (NZ +
The area is divided so that the areas for 10 CA and 10 CM corresponding to 1) can be secured. In this example, the incidental information area may be assigned to B17 and the position management information may be assigned to B18. The reason for this is that when multiple zones are used continuously, there is a possibility that (NZ + 1) still images will be recorded in the relevant zone due to the remaining capacity of other zones, so a reserve is secured. This is because

Even when one zone has a plurality of incidental information areas, it can be divided by the above method. According to the above division method, information recording / reproduction can be performed at high speed in error correction block units, and the entire zone can be effectively divided and used.

(Fourteenth Embodiment) FIG. 17 is an explanatory diagram of a data management method inside an optical disk medium according to a fourteenth embodiment of the present invention. In FIG. 17, 100
Is a disk usage information area, 101 is a video / audio data area, 102 is an auxiliary information area, 103 is a position management information area, 104 is an error correction block, 105 is a logical block, 106 is the minimum data of one video / audio data, 10
Reference numeral 7 is one piece of supplementary information data, and 108 is one piece of position management information data. 101 to 108 are the same as those in the tenth embodiment, and are different from the thirteenth embodiment in that 100 disk usage information areas are added.

A specific zone (innermost zone, etc.) of the optical disc requires a management area for recording information on the entire disc (system file and information uniquely managed by the user). Here, an area division method in a zone having an information (disk usage information) area for managing the entire disk will be described. FIG. 17 schematically shows a case where a disk usage information area is provided at the beginning of the zone. The other conditions are the same as those in the thirteenth embodiment.

When a capacity of 2 logical blocks is required as the disk usage information, the disk usage information is assigned with 1 error correction block B1 so that the audiovisual data area matches the error correction block. As a result, the video / audio data area, the auxiliary information area, and the position management information area are divided by the remaining 16 error correction blocks (B2 to B17). The division of B2 to B17 may be performed according to the tenth embodiment described above. With the above division method, it is possible to record and reproduce information at high speed in error correction block units even in an area including the disk utilization information area, and to effectively divide and use the entire zone.

(Fifteenth Embodiment) FIG. 18 is an explanatory diagram of a data management / recording method inside an optical disk medium according to a fifteenth embodiment of the present invention. In FIG.
121 is a video / audio data area, 122 is an auxiliary information area,
Reference numeral 123 is a location management information area. This area is the same as the area distribution within one zone described in the thirteenth embodiment.

The recording method and data management method for each area will be described with reference to FIG. If the logical blocks in the zone are set to S1 to S51 from the beginning and the video and audio data area is divided from the beginning for each minimum capacity CV, S1 to S5 and S6.
-S10, ..., S41-S45 are the minimum audiovisual data. The additional information area is divided from the beginning by numbering A1 to A9 in units of the minimum capacity CA from the beginning. The position management information area divides the range to be used from the beginning by assigning numbers M1 to M9 in units of minimum capacity CM.

As audio / video data, AV11
(Capacity 2 CV), AV12 (Capacity 3 CV), AV13
(Capacity 1 CV), AV14 (Capacity 1 CV), AV15
Record (capacity 2 CV). At this time, as shown in FIG. 18A, the video / audio data area is recorded so that one video / audio data becomes a continuous logical block in the order of input. A
The incidental information of V11 is continuously recorded in the order of A1, and the incidental information of AV12 is continuously recorded in the order of A2. As a result, the location management information
AV11 audio / video data recording positions S1 to S10 and AV
11 additional information recording positions A1 will be recorded.

The position management information is in a range proportional to the capacity of the audiovisual data of AV11 (2 CM for AV11, AV12
Then 3 CM) is rewritten. That is, since the end position of recording one video / audio data is not known until the recording ends, the position management information recording position (M2 in AV11, M in AV12) with respect to the final position of the video / audio data.
5), and the position management information recording position (AV
11 overwrites M1 and AV12 overwrites M3 and M4) with dummy data. As a result, after the first recording, FIG.
The recording state as shown in (1) is obtained.

Next, the case of overwriting this zone will be described. As audiovisual data, AV21 is chronologically arranged.
(Capacity 1 CV), AV22 (Capacity 2 CV), AV23
(Capacity 2 CV), AV24 (Capacity 2 CV), AV25
(Capacity 1 CV) and AV 26 (Capacity 1 CV) are recorded.
At this time, the video / audio data area is overwritten and recorded in the order of input as shown in FIG. The incidental information of AV21 is recorded from A6 next to the last position recorded last time, and the incidental information of AV22 is recorded in A7. The auxiliary information of AV24 is the final position A
Although recorded in No. 9, the next incidental information of AV25 is returned to the head of the area and recorded in A1. In other words, the incidental information area is
Input information is recorded in a cyclic memory.

The position management information is recorded in order from the beginning of the area in the same manner as the first recording. That is, the audio / video data recording positions S1 to S5 of the AV 21 and the incidental information recording position A6 of the AV 21 are recorded in M1. In the following order, the AV 22 records the video / audio data recording positions S6 to S15 and the auxiliary information recording position A7 in M3, and M2 in the middle overwrites the dummy data. As a result, after the second recording, the recording state as shown in FIG.

Next, the case where one device handles a plurality of video sizes will be described. Even if the video is the same, the video and audio data size changes when the video compression rate is changed. Normal,
Since the user can select a desired compression rate in the video recording device, the capacity per video can be any size as long as it is not smaller than the minimum audiovisual data capacity CV. However, one video / audio data is assumed to be an integral multiple of the logical block.

FIG. 19 shows a recording state when the size of the video / audio data is not an integral multiple of the minimum capacity CV. FIG. 19
Shows the case where the capacity of the audiovisual data AV31 is 13 logical blocks and the capacity of AV32 is 7 logical blocks. When the AV 31 is recorded from the beginning of the audiovisual data area, S1 to S13 are recorded. At this time, as described above, the additional information of the AV 31 is recorded at the head A1 of the additional information area. Further, the position management information of the AV 31 is recorded in the position M3 corresponding to the final logical block S13 of the audiovisual data AV31. Dummy data is recorded in M1 and M2 as described above.

The audiovisual data of AV32 is recorded in S14 to S20 after AV31. The incidental information of AV32 is recorded in A2, and the position management information of AV32 is recorded in M4 corresponding to the final recording position of audiovisual data S20.

As in the above procedure, the audiovisual data is sequentially packed and recorded in logical block units. As the supplementary information, one supplementary information is cyclically recorded for one video / audio data. In the position management information area, the recording range of the video and audio data and the recording range of the position management information are recorded in proportion to each other, and the effective management information is recorded at the position corresponding to the final logical block of the video and audio data. Fill the middle position with dummy data.

As a result, recording of any video / audio data size can be supported. It should be noted that, in order to distinguish between the dummy data of the position management information and the valid data, specific data of both data are compared (for example, the final logical block is not included in the dummy data, and the final logical block is recorded only in the actual data). ) Or have an identification bit. Further, it is preferable to record the video / audio data in the order of input in order to effectively use the disk, but a space for a logical block may be provided between two video / audio data.

With the data recording method of the present invention, 1
Since the incidental information is arranged in the order of input regardless of the capacity of the video / audio data, there is an advantage that the subsequent search operation is easy.
Also, in the location management information area, since the recording range in the zone of the video and audio data always matches, the location management information of the previous video is automatically linked when the video and audio data previously recorded by the overwrite is lost. There is an advantage that the data that has been erased and erased and the existing data can be easily managed.

(Sixteenth Embodiment) FIG. 20 is an explanatory diagram of a data management recording method for an optical disc according to a sixteenth embodiment of the present invention. In FIG. 20, 131 is a zone 1 audio / video data area, 132 is a zone 1 additional information area, 133 is a zone 1 position management information area, 13
4 is the audio / video data area of zone 2, 135 is zone 2
The additional information area 136 is a zone 2 position management information area. The same area allocation as in the thirteenth embodiment is made in both zone 1 and zone 2.

However, the present embodiment shows the case where the maximum number of video / audio data NZ that can be recorded in one zone is 6.
One error correction block is shown as three logical blocks, one video / audio data minimum number CV is shown as five logical blocks, four additional information is one logical block, and six position management information is one block. The total capacity of each zone is 12 error correction blocks (36 logical blocks) in both zone 1 and zone 2.

The logical block number in the disk is zone 1
Are represented by serial numbers S1 to S36, and zone 2 is represented by serial numbers S37 to S72. With an optical disc composed of multiple zones,
As a method of accessing each data, the recording position is represented by a serial number consecutive from zone 1 in the audiovisual data area, the additional information area, and the position management information area of each zone. In the video / audio data area, position numbers are set in logical block units, and zone 1 has V1 to V30 and zone 2 has V31 to V60.

In the additional information area, zone 1 has A1 to A6 in the smallest capacity CA increments, and zone 2 has A7 to A12 in the smallest capacity CA increments. The location management information area is M1 to M6 in zone 1 and M7 to M in zone 2 in the smallest capacity CM increments.
Twelve. The video / audio data may be managed by serial numbers in increments of CV, but it is more convenient to manage the video / audio data by serial numbers in logical block units on the assumption that an arbitrary video / audio data size is recorded. And in the location management information,
The consecutive position numbers A1 to A12 and V1 to V60 are recorded. In actual recording / reproduction on the optical disc, since the access is made by the logical block number, the logical block address to be accessed is obtained from the conversion table (recording position conversion table) as shown in FIG.

Next, the case of recording video / audio data will be described with reference to FIG. Here, the audiovisual data AV
The case where 1 (capacity 2 CV), AV 2 (capacity 3 CV), AV 3 (capacity 3 CV), AV 4 (capacity 2 CV) are sequentially recorded is shown. Since AV1 and AV2 are recorded in the same zone, they are recorded as in the fifteenth embodiment. Then A
Regarding V3, the first 1 CV can be recorded in zone 1, but the remaining 2 CV will be recorded in zone 2. In this case, the data AV3 to be recorded once in the zone 1
The first CV of V3 is recorded in V26 to V30, the dummy data for position information management of AV3 is recorded in M6, and then the zone 2 is moved, and the second and third CVs of AV3 are recorded in V31 to V40.
When the recording of AV3 ends, the additional information of AV3 is added to the zone
Record at 1. Similarly, position management information corresponding to the second half 2CV of AV3 is recorded in M7 (dummy data) and M8.

For AV4, the recording operation is the same in the same zone. As a result, the data across the zones is recorded as shown in FIG. When overwritten again, each zone is the same as in the fifteenth embodiment, and the video and audio data across the zones complies with the following rules at the time of recording in the fifteenth embodiment.

When the zone is crossed, the audiovisual data and the position management information to be recorded in the current zone are preferentially recorded. The supplementary information is recorded as a cyclic memory in the supplementary information area of the zone where the final recording position of the audiovisual data is located.
As the position management information, valid information is recorded at a location corresponding to the final recording position of the audiovisual data, and dummy data is used on the way.

By the above-mentioned operation, since each area is managed by the serial number even if the zone is crossed, it is managed as if recording to one area is realized. Also, from the above rules, when crossing zones, by recording all the data to be recorded on the optical disc and then moving to the next zone,
In particular, in the case of an optical disk in which the disk rotation speed is different for each zone, frequent seek between zones can be eliminated, and high-speed recording operation and low power consumption can be realized.

(Seventeenth Embodiment) FIG. 22 is an explanatory diagram of an optical disk data management method according to a seventeenth embodiment of the present invention. In FIG. 22, 131 is a video / audio data area of zone 1, 132 is a supplementary information area of zone 1, 133 is a zone 1 position management information area, 134 is a video / audio data area of zone 2, 135 is a supplementary information area of zone 2. Reference numeral 136 denotes a zone 2 position management information area. Both zone 1 and zone 2 have the same area allocation and position management numbers as in the 16th embodiment.

[0125] Here, a recording method at the time of crossing zones when the audiovisual data can have an arbitrary data capacity will be described. As described in the fifteenth embodiment, when the video / audio data is not an integral multiple of the minimum capacity CV, a range less than the minimum capacity CV may remain in the zone video recording data area. In this case, there is no problem even if the recording is performed in the continuous logical blocks as it is, but it is clear that the recording is performed over two zones. Therefore, when the remaining capacity of the video / audio data area becomes less than the minimum capacity CV at the time when the recording of one video / audio data group is completed, the newly input video / audio data is recorded in this remaining capacity. Without, record from the next zone.

The situation is shown in FIG. It is assumed that AV41 (capacity 7 logical blocks), AV42 (capacity 14 logical blocks), AV43 (capacity 7 logical blocks), AV44 (capacity 8 logical blocks) are input. Zone 1
AV41, AV42, and AV43 are sequentially recorded from. The recording method is as described in the fifteenth embodiment. When the recording of the AV 43 is completed, the remaining capacity of the audiovisual data area 131 of zone 1 is 2 logical blocks (V
29, V30), and the minimum capacity CV is less than 5.
Therefore, the AV 44 does not record in the zone 1 but the zone 2
It is recorded from the beginning of the video and audio data area of.

By doing so, when accessing the AV 44, compared with the case of accessing both zone 1 and zone 2, only zone 2 needs to be accessed, there is no disk rotation speed change waiting time, and high speed operation is possible. Playback is possible. Although the operation of recording from the next zone when the capacity is less than the minimum capacity CV has been described here, when it is clear that one video / audio data group (AV41, AV42, etc.) does not fit within one zone, Even if there is a free space equal to or more than the minimum capacity CV, the same effect can be obtained by recording from the next zone.

[0128]

As described above, according to the present invention, in the optical disc in which the recording area is divided into a plurality of zones in the radial direction,
A video / audio data area for recording video / audio data, one or more auxiliary information areas for recording auxiliary information related to the video / audio data, a position where the video / audio data is recorded and a position for recording the auxiliary information The location management information area for recording location management information is a continuous area and is allocated with securing the capacity necessary to record all the data in the zone, thereby seeking between zones. It is possible to obtain the effect that the power consumption of the device can be suppressed while the high-speed video / audio data recording is realized by reducing the power consumption as much as possible.

[Brief description of drawings]

FIG. 1 is a schematic diagram of area allocation according to a first embodiment of the present invention.

FIG. 2 is a schematic diagram of area allocation in the second embodiment of the present invention.

FIG. 3 is a schematic diagram of area allocation in the third embodiment of the present invention.

FIG. 4 is a schematic diagram of region recognition in FAT according to a fourth embodiment of the present invention.

FIG. 5 is an area layout diagram according to a fifth embodiment of the present invention.

FIG. 6 is an area layout diagram according to a sixth embodiment of the present invention.

FIG. 7 (1) is a schematic diagram of a video / audio data structure according to a seventh embodiment of the present invention (when one channel is input); (2) is a video / audio data according to the seventh embodiment of the present invention. Schematic diagram of structure (when 2 channels are input)

FIG. 8 is a schematic diagram of area allocation according to an eighth embodiment of the present invention.

FIG. 9 is a schematic diagram of area allocation in the ninth embodiment of the present invention.

FIG. 10 is a block diagram of a video recording / reproducing apparatus according to a tenth embodiment of the present invention.

FIG. 11 is a method of rewriting incidental information according to the tenth embodiment of the present invention.

FIG. 12 is a block diagram of a video recording / reproducing apparatus according to an eleventh embodiment of the present invention.

FIG. 13 is a block diagram of a video recording / reproducing apparatus according to a twelfth embodiment of the present invention.

FIG. 14 is a time chart of video recording according to the twelfth embodiment of the present invention.

FIG. 15 is a schematic diagram (1) of area allocation in the thirteenth embodiment of the present invention.

FIG. 16 is a schematic diagram (2) of area allocation in the thirteenth embodiment of the present invention.

FIG. 17 is a schematic diagram of area allocation in the fourteenth embodiment of the present invention.

FIG. 18 (1) is a conceptual diagram of information recording in the fifteenth embodiment of the present invention (first recording); and (2) is a conceptual diagram of information recording in the fifteenth embodiment of the present invention ( (2nd record)

FIG. 19 is a conceptual diagram of information recording in a fifteenth embodiment of the present invention (at the time of a plurality of data capacities)

FIG. 20 is a conceptual diagram of information recording in the sixteenth embodiment of the present invention (when crossing zones).

FIG. 21 is a recording position conversion table in the sixteenth embodiment of the present invention.

FIG. 22 is a conceptual diagram of information recording in the seventeenth embodiment of the present invention.

FIG. 23 is a conceptual diagram of area distribution in a conventional video recording device.

[Explanation of symbols]

1 optical disk 2 zone 3 sector address 4 user area 5 replacement area 6 video and audio data area 7 supplementary information area 8 position management information area 9 thumbnail area 30 video and audio data area 31 supplementary information area 32 position management information area 40 user area 41 replacement area 42 video / audio data area 43 auxiliary information area 44 location management information area 50 user area 51 FAT area 52 directory area 53 data area 60 system area 61 video / audio data area 62 auxiliary information area 63 location management information area 64 inner disk usage information File 65 Outer disk usage information file 70 Video / audio data area 71 Supplementary information area 72 Position management information area 73 Vicinity of audio / video data area boundary 74 Proximity information area boundary vicinity 75 Position management information area boundary vicinity 80 Encoding means 81 Video / audio data Memory 82 Supplementary information memory 83 Position management information memory 84 Disk usage information memory 85 Block recording control means 86 Optical disk 87 Optical disk device 88 Control section 89 Verification control means 90, 91, 92 Backup memory 100 Disk usage information area 101 Video / audio data area 102 Additional information area 103 Position management information area 104 Error correction block 105 Logical block 106 Minimum data 107 of audiovisual data 107 One of auxiliary information data 108 One of positional management information data 121 Audiovisual data area 122 Additional information area 123 Positional management information Area 131 Zone 1 video and audio data area 132 Zone 1 auxiliary information area 133 Zone 1 position management information area 134 Zone 2 video and audio data area 135 Zone 2 auxiliary information area 136 Zone 2 position management information Information area 140 Camera 141 Microphone 142 Binary compression section 143 Binary compression section 144 Signal combining section 150 Camera a 151 Microphone a 152 Camera b 153 Microphone b 154, 155, 156, 157 Binary compression section 158 Signal combining section 901 Lead-in area 902 Volume management information area 903 Volume information file 904 Video title set 905 Audio title set 906 Lead-out area 907 File CV 1 Minimum data capacity of audiovisual data CA 1 Data capacity of accompanying information CM 1 Data of position management information Capacity CZ Zone capacity NZ 1 Maximum number of recorded images in one zone CVA1, CVA2, CVA5 Capacity of video / audio data area CAA1, CAA2, CAA5 Capacity of supplementary information area CMA1, CMA2, CMA5 Position management information area The amount Da, additional information of Db audiovisual data unit Va1, Va2, Va3, Va4, Vb1, Vb2, V
b3 Digital video signal Aa, Ab Digital audio signal DT1, DT2, ... DT12, DT21 Related information (incidental information or location management information or disk usage information) AV1, AV2, AV3, AV4, AV5, AV6 Video / audio data AV11 , AV12, AV13, AV14, AV15
Audiovisual data AV21, AV22, AV23, AV24, AV25,
AV26 Video / audio data AV31, AV32, AV41, AV42, AV43,
AV44 audiovisual data DT1B, DT2B, DT3B, DT4B, DT5B,
DT6B Related information backup data DM Position management information dummy data B1, B2, ..., B18 Error correction block number S1, S2, ..., S70 Logical block number V1, V2, ..., V60 Video Recording position number for audio data A1, A2, ..., A12 Recording position number for additional information M1, M2, ..., M12 Recording position number for position management information

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) H04N 5/76-5/781 H04N 5/85-5/956 G11B 20/12

Claims (11)

(57) [Claims] 1. An optical disk medium having a recording area radially divided into a plurality of zones, wherein each zone has at least one of video and audio.
It manages the audiovisual data area for recording video and audio data that, said video and audio data supplementary information recorded with you zone information area associated with the recording position of the supplementary information and the recording position of the video and audio data position management information and position management information area for recording provided, and, in each zone, the said supplementary information and the location management information corresponding to all of the video and audio data can be recorded in the zone within the zone An optical disk medium, which is arranged in a recordable continuous area. Wherein the amount of space the audiovisual data area of each zone, and the area capacity of the position management information area, before Symbol
And the amount of space with zone information area, according to claim 1, wherein the optical disc medium, characterized in that it is distributed substantially the same ratio in all zones. 3. Symbol recording area is divided into a plurality of zones in the radial direction, a disk rotation speed in each zone is constant ZC
The LV system is used, and each zone is provided with a spare area for substitution when data cannot be recorded due to a disk defect, and the supplementary information area, the position management information area, and the spare area of each zone. The optical disk medium according to claim 1 or 2, wherein and are continuously provided. The supplementary information and wherein prior Symbol audiovisual data area
The region and the position management information area, an optical disc medium according to any one of claims 1, characterized in that, each of which is arranged as a single file請<br/> Motomeko 3. 5. The audiovisual data area and the supplementary information
A disk usage information file for recording disk usage information for managing the usage status of each area of the area and the position management information area is arranged on the inner circumference or the outer circumference, or on both the inner circumference and the outer circumference. of claims 1 to claim 4
The optical disk medium according to any one of the above. Wherein said supplementary information as the previous SL audiovisual data area
The area and the location management information area are each an integral multiple of the block area for error correction, the head of each area matches the start logical block address of the error correction block, and the tail of each area is the error correction block. The end logical block address of
Optical disc medium according to any one of stone claim 5. 7. Any claims 1 and allocates the incidental information area in the recording area of the thumbnail data are representative screen of the video and audio data according to claim 6
Crab description of the optical disk media. 8. The method according to any one of claims 1 to 7.
It is a recording device that records information on the optical disc media
Te, before SL and the block recording control means for the video audio data and the supplementary information and the location management information performs control to meet the error correction block units of the optical disk medium, the block data generated by said block recording control means
And the optical disk recording means for recording on the optical disc medium, and a control unit for controlling the entire device, recording is properly when recording the video and audio data
Record without verify operation
However, when recording the supplementary information or location management information
Is a recording characterized by executing the verify operation.
Equipment . 9. The method according to any one of claims 1 to 7.
It is a recording device that records information on the optical disc media
Te, video and audio data to be recorded before Symbol audiovisual data area is recorded from the head of the audiovisual data area in the zone in the recording request order from the outside to the input order in logical block size, the supplementary information region 1 One additional information for one video and audio data in the zone is fixed at the end of the area in fixed data length increments.
The location management information area is overwritten as a cyclic memory that returns to the beginning of the area next to the location, and the location management information area corresponds to the capacity of the recording range of the audiovisual data area in one zone. recording, characterized in that overwrites a fixed data length increments from the recording order and area head in the same order of video and audio data
Equipment . 10. A recording middle one of the video and audio data for which the recording request, if not fit in audiovisual data region, upon completion of the recording to the last logical block of the video and audio data area, the recording supplementary information to be recorded in the zone starts, characterized in that to record the position management information in a predetermined position of the zone <br/> over down with the last recording position claim 9
The recording device described . 11. When the recording of one audiovisual data is completed, the remaining capacity of the audiovisual data area in the zone is
If it is less than the minimum data unit of audiovisual data, serial newly recorded requested video audio data according to claim 9 or claim 10, wherein a is not recorded in that area
Recording device .