WO2001080240A1 - Disk control device, disk control method, and disk unit - Google Patents

Disk control device, disk control method, and disk unit Download PDF

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Publication number
WO2001080240A1
WO2001080240A1 PCT/JP2001/003340 JP0103340W WO0180240A1 WO 2001080240 A1 WO2001080240 A1 WO 2001080240A1 JP 0103340 W JP0103340 W JP 0103340W WO 0180240 A1 WO0180240 A1 WO 0180240A1
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WO
WIPO (PCT)
Prior art keywords
area
recording area
recording
disk
audio data
Prior art date
Application number
PCT/JP2001/003340
Other languages
French (fr)
Japanese (ja)
Inventor
Takumi Kinoshita
Original Assignee
Matsushita Electric Industrial Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co., Ltd. filed Critical Matsushita Electric Industrial Co., Ltd.
Publication of WO2001080240A1 publication Critical patent/WO2001080240A1/en

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
    • G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
    • G11B27/036—Insert-editing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
    • G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
    • G11B27/034—Electronic editing of digitised analogue information signals, e.g. audio or video signals on discs

Definitions

  • Disk control device Disk control method, and disk device
  • the present invention relates to a disk control device, a disk control method, and a disk device.
  • the present invention introduces area management information (file system) that logically manages a recording area of video and audio data and enables partial deletion
  • the present invention relates to a disk control device, a disk control method, and a disk device that reproduce data as logically continuous data even in a region that has been partitioned. Background art
  • the disk device has area management information for managing the video and audio data recorded on the disk, and manages the above-mentioned video and audio data when recording the video and audio data or when the editing operation is completed.
  • Area management information is recorded on the disc. Also, by operating the area management information, unnecessary portions of the video / audio data are deleted so that the recording area can be physically played back and played back as continuous data during playback. Video and audio during recording as unrecorded area Data can be recorded.
  • an object of the present invention is to provide a disk control device, a disk control method, and a disk device in which frame drop does not occur. Disclosure of the invention
  • the disk control device includes an interface means for transmitting / receiving a signal to / from an external device, and a video / audio signal received from the external device when the interface means receives a recording start request.
  • Storage means for storing the data and the video / audio data from the external disk device when a playback start request is received; and the video / audio data stored by the storage means being recorded.
  • Data recording / reproducing means for reproducing the video / audio data
  • a video / audio data management means for issuing a recording / retrieving request of the video / audio data to the data recording / reproducing means, the data recording / reproducing means and the video / audio data
  • area management information management means for managing area management information of the video and audio data sent from the management means.
  • the area management information management means removes a part of the recording area of the continuous video / audio data and physically reduces the recording area; when the recording area is divided and becomes discontinuous; the reduced recording area is moved; A part of the recording area for continuous audio and video data is deleted and When an unrecorded area which is divided into small parts is generated, the unrecorded area is moved.
  • unnecessary portions can be deleted from video and audio data that has been recorded once, video and audio data excluding the deleted portions can be treated as continuous data during playback, and the deleted area can be re-created. It can be used as an area for recording.
  • the disk control device is the disk control device according to claim 1, wherein the area management information management means physically stores the recorded area or the unrecorded area. It is characterized by managing with address and logical address.
  • the disk control device is the disk control device according to claim 1, wherein the area management information management means manages each of the recorded areas or the unrecorded areas respectively. It is characterized by the numbering and management of numbers from 1 to N. : '
  • a disk controller according to claim 4 of the present invention is the disk controller according to claim 1, wherein the area management information management means has an area management information table. Things.
  • the disk control device is the disk control device according to claim 4, wherein the area management information table includes a recording / reproduction area information table and a recording area management table. It is characterized by comprising an information table and an unrecorded area management information table. .
  • ADVANTAGE OF THE INVENTION According to this invention, management of each recording area and unrecorded area can be made easy, and the operation of recording / reproduction can be started accurately in a short time.
  • a disk control device is the disk control device according to claim 1, wherein a part of a recording area of continuous video and audio data is deleted.
  • the above area management information management means divides the small divided recording area into a front recording area: ⁇ after, or before a rear recording area, or a division. And move them to both.
  • the video and audio data is moved to a recording area before and after the small recording area where a frame drop may occur at the next reproduction. It can be read from a continuous area on the disc during playback.
  • the area management information management means moves the end portion of the front recording area to the unrecorded area in front of the small divided recording area, or reduces the size of the recorded data.
  • Area (3 ⁇ 4It is characterized by moving to the beginning of the rear recording area in the rear unrecorded area!).
  • the minimum necessary video and audio data is moved from the recording area before and after to a small recording area where a frame drop may occur in the next playback. By doing so, it is possible to continuously extract video and audio data from the disk by increasing the small recording area.
  • the disk control device is the disk control device according to claim 1, wherein a part of a recording area of continuous video / audio data is deleted, and the recording area is physically Is it divided into small pieces and discontinuous?
  • the area management information management means moves necessary frames from the end of the entire R area and the end of the front recording area to a large unrecorded area.
  • the required frame: ⁇ is moved to a large unrecorded area from the entire recording area and the beginning of the rear recording area.
  • the minimum required video and audio data from the recording areas before and after the small recording area where a frame drop is likely to occur in the next reproduction is performed.
  • the small recorded area can be enlarged and video and audio data can be extracted from the disc as continuously as possible.
  • the area management information management means moves the necessary frame from the beginning of the rear recording area to the front and back to the small divided unrecorded area, or is divided into small pieces. It is characterized in that necessary frames are moved from the end of the front recording area to the rear recording area to the unrecorded area.
  • a disk control device is the disk control device according to claim 1, wherein a part of a recording area for continuous video and audio data is deleted, and When a small divided unrecorded area occurs, the area management information management means sets the end part of the front recording area for the small divided unrecorded area and the necessary frame at the head part of the rear recorded area. Or moving the head of the rear recording area with respect to an unrecorded area divided into small pieces and moving the necessary frame to the end of the front recording area. ,
  • the video and audio data when the video and audio data is partially deleted, necessary video and audio data is recorded before and after the recording area from a recording area before and after a small unrecorded area where a frame drop may occur in the next recording.
  • By moving it it is possible to extend the small unrecorded area and write it as continuously as possible when storing video and audio data on the disc.
  • a disk control device is the disk control device according to claim 1, wherein a part of a recording area for continuous video and audio data is deleted, and When a small undivided unrecorded area occurs, the area management information management unit moves the end of the front recording area to the small undivided unrecorded area and moves the necessary frame to the large unrecorded area. Or the head of the rear recording area for the unrecorded area divided into Is moved.
  • the necessary video and audio data from the recording area before and after the unrecorded area is large and unrecorded, which may cause a frame drop in the next recording.
  • the video can be written as continuously as possible when expanding the small unrecorded area and storing video and audio data on the disc.
  • the disk control device according to claim 12 of the present invention is ';'.
  • a disk control device using a magnetic disk drive can be obtained.
  • the disk controller according to claim 13 of the present invention is the disk controller according to any one of claims 1 to 11, wherein the disk is a magneto-optical disk. It is a disk.
  • a disk control device using a magneto-optical disk drive can be obtained.
  • an interface process for transmitting / receiving a signal to / from an external device, and receiving the signal from the external device when the interface unit receives a recording start request.
  • the storage processing for storing the video and audio data from the external disk device, and the video and audio data stored by the storage means are recorded.
  • the area management information management processing when a part of the recording area of the continuous video / audio data is deleted and the recording area is physically divided into small pieces and becomes discontinuous, the reduced recording area is moved. A part of the recording area of continuous video and audio data was deleted, and an unrecorded area that was physically small and divided occurred ⁇ , move the above unrecorded area Special feature:
  • unnecessary portions are deleted from video and audio data once recorded, video and audio data excluding the deleted portions can be treated as continuous data at the time of reproduction, and the deleted area is recorded again. Can be used as an area for
  • the disk control method according to claim 15 of the present invention is the disk control method according to claim 14, wherein in the area management information management processing, the recording area or the unrecorded area is It is specially designed to manage data using logical and logical addresses.
  • the disk control method according to claim 16 of the present invention is the disk control method according to claim 14, wherein in the area management information management processing, each of the recording areas or the unrecorded areas is recorded. It is characterized in that areas are numbered and managed from 1 to N respectively.
  • a disk control method according to claim 17 of the present invention is characterized in that, in the disk control method according to claim 14, the area management information management processing includes an area management information table.
  • the disk control method according to claim 18 of the present invention is the disk control method according to claim 17, wherein in the area management information management processing, the area management information table includes a recording / reproducing area. It is characterized by comprising an information table, a recording area management information table, and an unrecorded area management information table.
  • a disk control method is the disk control method according to claim 14, wherein a part of the recording area of the continuous video / audio data is deleted and the recording area is physically If the recording area is divided into smaller pieces and becomes discontinuous, the above-mentioned area management information management process divides the smaller divided recording area after the front recording area, before the rear recording area, or by dividing both. It is characterized by moving.
  • a small recording area where a frame drop is likely to occur is moved to a recording area before and after the small recording area, so that a video and audio data can be reproduced on a disc. Can be read from the continuous area.
  • a disc control method according to claim 20 of the present invention in the disc control method according to claim 14, wherein a part of a recording area for continuous video / audio data is deleted and the recording area is physically
  • the unrecorded area in front of the smaller divided recording area is moved to the end of the front recording area, or the reduced recording is performed. It is characterized in that a movement is made to a start end portion of the rear recording area to an unrecorded area behind the area.
  • the minimum necessary video and audio data is moved from the recording area before and after to the small recording area where a frame drop may occur, thereby reducing the size.
  • video and audio data can be continuously extracted from the disc.
  • a disc control method is the disc control method according to claim 14, wherein a part of the recording area of the continuous video / audio data is deleted and the recording area is physically If the data is divided into smaller pieces and become discontinuous, the above area management information management process moves the entire divided S area and the required frame from the end of the front recording area to the larger unrecorded area. Or moving the necessary frames from the start end of the entire recording area and the rear recording area into a large unrecorded area.
  • the minimum necessary video and audio data is added to the small recording area where frame drop is likely to occur from the recording areas before and after the small recording area, and the unrecorded area is By moving it, the recording area is enlarged and the recording area is enlarged, and video and audio data is taken out from the disc as continuously as possible; Can be.
  • a disk control method according to claim 22 of the present invention is the disk control method according to claim 14, wherein a part of a recording area for continuous video and audio data is deleted and the disk control method is physically reduced.
  • a necessary frame is moved from the head of the rear recording area to the front recording area to the small divided unrecorded area, or It is characterized in that a necessary frame is moved from the end of the front recording area with respect to the rear recording area to a small divided unrecorded area.
  • a disk control method is the disk control method according to claim 14, wherein a part of the recording area of the continuous video and audio data is deleted, and the disk control method is physically reduced.
  • the area management information management process sets the end of the front recording area for the small divided unrecorded area to the frame required for the beginning of the rear recording area. It is characterized by moving or moving the head of the rear recording area to the end part of the front recording area by the necessary frame for the small undivided unrecorded area.
  • a disk control method is the disk control method according to claim 14, wherein a part of the recording area of the continuous video / audio data is deleted, and the disk control method is physically smaller.
  • the area management information management process moves the end of the front recording area to the smaller divided unrecorded area, and moves the required frame to the larger unrecorded area. It is characterized in that the leading part of the rear recording area is moved by a necessary frame to the large unrecorded area with respect to the unrecorded area divided into small pieces.
  • the present invention when the video and audio data is partially deleted, there is a possibility that a frame drop may occur. In this way, when saving the video and audio data to the disk by expanding the small unrecorded area, the data can be written as continuously as possible.
  • the disk control method according to claim 25 of the present invention is the disk control method according to any one of claims 14 to 24, wherein the disk is It is a magnetic disk. According to the present invention, a disk control method using a magnetic disk drive can be obtained.
  • the disk control method according to claim 26 of the present invention is the disk control method according to any one of claims 14 to 24, wherein the disk is It is a magneto-optical disk. J
  • a disk control method using a magneto-optical disk drive can be obtained.
  • a disk device includes the disk control device according to any one of claims 1 to 13.
  • ADVANTAGE OF THE INVENTION According to the present invention, a function of deleting a part of video and audio data is realized by area management of video and audio data, and a disk device which does not cause a frame drop at the time of reproduction / recording in a physically small divided area is obtained. be able to. Brief description of the drawings ''
  • FIG. 1 is a block diagram for explaining a disk control device according to a first embodiment of the present invention.
  • FIG. 2 is a diagram for explaining the structure of video and audio data and area management information recorded on the disk device according to the first embodiment of the present invention.
  • FIG. 3 is a diagram showing a relationship between a physical frame address and a logical frame address according to the first embodiment of the present invention.
  • FIG. 4 is a diagram showing an example of area management information stored in an area management information area in the disk device according to the first embodiment of the present invention.
  • FIG. 5 is a diagram for explaining a ring buffer at the time of data recording of the disk control device according to the first embodiment of the present invention. :
  • FIG. 6 is a diagram for explaining a ring buffer at the time of data reproduction of the disk control device according to the first embodiment of the present invention.
  • FIG. 7 is a flowchart for explaining a next recording LFA calculation method at the time of recording by the disk control method according to the first embodiment of the present invention.
  • FIG. 8 is a diagram showing an example of moving the small recording area of the disk control device according to the first embodiment of the present invention after the logical front recording area to eliminate the small recording area.
  • FIG. 9 illustrates a small recording area of the disk control device according to the first embodiment of the present invention.
  • FIG. 9 is a diagram showing an example in which a small recording area is eliminated by being moved to the front of a physical rear recording area.
  • FIG. 10 shows a disk control device according to Embodiment 1 of the present invention in which a small recording area is divided and moved after a logical front recording area and before a logical rear recording area
  • FIG. 9 is a diagram illustrating an example of eliminating a small recording area.
  • FIG. 11 is a diagram showing an example in which the end portion of the logical front area is moved physically ahead of the small recording area of the disk control device according to the first embodiment of the present invention to enlarge the small recording area. is there.
  • FIG. 12 shows an example in which the starting point of the logical rear recording area is moved to the rear of the small recording area of the disk control device according to the first embodiment of the present invention to enlarge the small recording area.
  • FIG. 12 shows an example in which the starting point of the logical rear recording area is moved to the rear of the small recording area of the disk control device according to the first embodiment of the present invention to enlarge the small recording area.
  • FIG. 13 shows a case where a necessary recording frame is moved to an unrecorded area from the entire recording area having a small disk control position according to the first embodiment of the present invention and the end of the logical front recording area, and the small recording is performed. It is a figure showing the example which enlarges a field.
  • -FIG. 14 shows a small recording area of the disk control device according to the first embodiment of the present invention, in which the necessary frames are moved from the beginning of the logical rear recording area to the unrecorded area. It is a figure showing the example which enlarges a field.
  • FIG. 15 shows a case where a necessary frame is moved from the head of the logical rear recording area to the physical front recording area to the small unrecorded area of the disk control device according to the first embodiment of the present invention.
  • FIG. 10 is a diagram showing an example of eliminating an unrecorded area of less than 10 frames.
  • FIG. 16 shows a case where necessary frames are moved from the end of the logical front recording area to the physical rear recording area to the small unrecorded ⁇ S area of the disk control device according to the first embodiment of the present invention.
  • FIG. 9 is a diagram showing an example of eliminating an unrecorded area of less than 10 frames.
  • FIG. 17 shows a frame required for a small unrecorded ⁇ g area of the disk control device according to the first embodiment of the present invention, with the end portion of the physical front recording area at the beginning of the logical rear recording area.
  • FIG. 9 is a diagram showing an example in which an unrecorded area of less than 10 frames is eliminated by moving the minutes.
  • FIG. 18 is a diagram showing an example in which the head of the physical rear recording area for the small unrecorded area of the disk control device according to the first embodiment of the present invention is replaced with the frame required for the end of the logical front recording area. The following shows an example of moving the to eliminate the unrecorded area of less than 10 frames FIG.
  • FIG. 19 is a diagram illustrating a disk control device according to the first embodiment of the present invention in which the end portion of the physical front recording area is moved to the small unrecorded area, and the necessary frame is moved to the large unrecorded area.
  • FIG. 11 is a diagram showing an example of eliminating an unrecorded area of less than 10 frames.
  • FIG. 20 shows the disk control apparatus according to Embodiment 1 of the present invention in which the head of the physical rear recording area is moved relative to the small unrecorded area and the necessary frame is moved to the large unrecorded area.
  • FIG. 4 is a diagram showing an example of eliminating an unrecorded area of less than 10 frames.
  • FIG. 21 is a block diagram for explaining a disk drive according to Embodiment 2 of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION
  • FIG. 1 is a block diagram for explaining a disk control device 100 according to Embodiment 1 of the present invention.
  • the disk controller 100 includes an I ⁇ 1394 path 101 for transferring a video / audio signal and a control signal (command) from an external device such as a digital VCR and the IEEE 1394 path. 1 3 9 4 External interface means 102 for transmitting / receiving a digital signal to / from an external device via path 101, and when the interface means 102 receives a recording start request, DV received from the external device. Formatted audio and video data
  • DV data (Hereinafter abbreviated as DV data).
  • a ring buffer 103 for storing video and audio data from the disk device, and a DV on the ring buffer 103 are stored.
  • Data recording / reproducing means 104 for recording data and reproducing DV data from the external disk device 105, and video / audio for issuing a request for storing or retrieving DV data to the data recording / reproducing means 104.
  • Area management information management means 10 for managing the area management information of the DV data sent from the data management means 106, the data recording / reproduction means 104, the video / audio data management means 106, and the like. It consists of seven.
  • an external disk It is assumed that a hard disk device (HDD) having an IDE interface is used as the device 105.
  • the recording area of the hard disk drive is managed on a sector basis with 512 bytes as one sector, and a logical block address (LBA) is assigned to each sector. ;
  • FIG. 2 is a diagram for explaining the structure of video / audio data and area management information recorded on the disk device according to the first embodiment of the present invention.
  • the first area (area with a small LBA) of the disk recordable area of the disk device 105 is allocated as an area management information area, and the remaining area is allocated as a DV data recordable area as an area for recording DV data.
  • the frame address (FA) is assigned from 0 in the DV data frame unit. This frame address is called a physical frame address (PFA) and is fixedly allocated on the HDD.
  • PFA physical frame address
  • LFA logical frame address
  • the positions on the disk device 105 are different even if the LFA and the PFA are the same.
  • FIG. 3 is a diagram showing a relationship between a physical frame address and a logical frame address according to the first embodiment of the present invention.
  • Fig. 3 shows a case where 1001 frames from 0 to 1000 are recorded and 200 frames from LFA 401 to 200 are deleted.
  • the recording area is divided into two, but LFA is from 0. It is continuously re-rolled up to 800.
  • additional recording is performed, and after 1101 frames are recorded, after 200 frames from LFA 651 are partially deleted, there are three recorded areas and three unrecorded areas.
  • when additional recording is performed if all the video and audio data are recorded in the unrecorded area 1, then the video and audio data are recorded in the area indicated by the unrecorded area 2.
  • FIG. 4 is a diagram showing an example of area management information stored in an area management information area in the disk device according to the first embodiment of the present invention.
  • the area management information includes recording / playback area information, recording area management information, and unrecorded area management information. There are three reports. :
  • the recording / reproducing area information includes a recording start logical frame address indicating a position where the DV data to be recorded next is stored, a reproduction start logical frame address indicating a position where the next DV data to be reproduced is stored, and recording. There is a final recording logical frame address indicating the top of the DV data recorded, and the total number of recordable frames indicating the number of frames recordable on the disk device.
  • the recording area management information includes a start physical frame address and an end physical frame address of the area n. n is in order from 1. When playing back the recorded DV data, the DV data in the area 1 is played back, and then the areas 2, 3, ... are played back in order. L F A is also assigned in order from region 1.
  • the unrecorded area management information includes the start physical frame address of the area n and the end physical frame address. n is in order from 1, and when recording DV data, the DV data is written to the area on the disk corresponding to the area 1, and the start physical frame address of the area 1 is incremented by one. At that time, if it is the same as the end physical frame address, the area 1 area has been lost, so the area 2 PFA is copied to area 1 and the area 3 PFA is copied to area 2 and the necessary area data is copied. Offset the next DV data recording to the new area 1.
  • the operation of the disk control device according to the first embodiment can be broadly divided into four operations of a recording processing operation, a reproducing processing operation, a partial deletion command processing operation, and a recording stop command processing operation. The operation will be described.
  • the external interface means 102 is composed of a P HY circuit for controlling the interface of the physical layer, a LINK circuit for controlling the interface of the logical layer, and the like.
  • the DV data received from the external ⁇ is transferred to the ring buffer 103.
  • FIG. 5 is a diagram for explaining a ring buffer at the time of data recording of the disk control device according to the first embodiment of the present invention. .
  • the received DV data is stored in the buffer position indicated by the ISO capture pointer.
  • the IS Is incremented to indicate the buffer.
  • the ISO capture pointer is returned to the highest position.
  • DV data is sent without interruption at a constant rate of 28.8 Mbps. Since it is about 30 frames Z seconds, it takes about 33ms to transfer one frame.
  • the data recording / reproducing means 104 sends the logical frame address to be recorded to the area management information managing means 107, and issues a ring buffer to the data area of the disk device 105 indicated by the physical frame address obtained by issuing the LFA 'PFA conversion request.
  • the DV data on the buffer indicated by the IDE extraction pointer 103 is recorded according to a predetermined procedure. Then, if the IDE fetch pointer exceeds the force buffer that is incremented to point to the next buffer, move the IDE fetch pointer back to the position pointing to the top buffer.
  • the DV data is sent from the external interface means 102 at regular intervals (about 33 ms in the case of DV data), but the data recording / reproducing means 104 records the DV data on the disk device 105 because Disk :
  • writing one frame of data to the disk device 105 takes about 8 ms for an HDD.
  • writing to the disk device 105 is considerably faster than the transfer speed of the DV data sent from the external interface means 102, so that the data which is not transferred to the disk device 105 in the ring buffer DV data is 0 or 1.
  • the recording of DV data is lost when the transfer to the disk device 105 is delayed until the size of the ring buffer becomes full.
  • the ring buffer has a capacity of 11 frames, a margin of about 0.3 seconds occurs at 10X 33ms, and this time absorbs the seek time generated by the disk device 105 and the retry processing time at the time of a write error. it can.
  • random access occurs in all 10 frames or if retry processing occurs somewhat, A situation may occur in which DV data cannot be stored in the disk device.
  • FIG. 7 is a flowchart for explaining a next recording LFA calculation method at the time of recording by the disk control method according to the first embodiment.
  • step S1 If the recording start logical frame address is larger than the total number of recording capability frames in step S1, it is determined that the recording is in the full recording state, and the end of recording is notified to the video / audio data management means 106. If the recording start logical frame address has not reached the total number of recordable frames, the process proceeds to step S2.
  • step S2 If the recording start logical frame address is larger than the final recording logical frame address in step S2, DV data is recorded in an unrecorded area and moved to the recording area as an additional recording mode. To overwrite the DV data in the recording area.
  • the recording start logical frame address is returned to the video / audio data management means 106 in step S10, and the recording start logical frame address is incremented by 1 in step S11. '
  • step S3 when the start physical frame address and the end physical frame address of the area 1 in the unrecorded area management information match in the additional recording mode, the remaining unrecorded frame is 1, so the unrecorded frame is not recorded in step S4.
  • the recording area 1 is deleted, and the subsequent area information is stuffed one by one, and the process proceeds to step S6. If they do not match, the number of remaining unrecorded frames is 2 or more.
  • step S5 the start physical frame address of area 1 in the unrecorded area management information is incremented by one. This operation secures a data area for one frame from the unrecorded area.
  • step S7 is executed to newly add to the recording area, and if not, step S9 is executed to secure an area for one frame to be recorded in the recording area.
  • step S8 the last recording logical frame address is incremented by one.
  • step S9 the ending physical frame address of the last area n valid in the area information in the recording area management information is incremented by 1, and the process proceeds to step S8.
  • step S10 the recording start logical frame address is returned to the video / audio data management means 106, and in step SI1, the recording start logical frame address is incremented by one. -Next, the reproduction processing operation will be described.
  • the external interface means 102 When the external interface means 102 receives a reproduction start request from the IE EE 1394 path 101, the external interface means 102 issues a reproduction start request to the video / audio data management means 106, and transmits the DV data transferred from the data recording / reproduction means 104 to the ring buffer 103. Are sequentially transmitted to the external device via the IEEE1394 path 101.
  • FIG. 6 is a diagram for explaining a ring buffer during data reproduction of the ⁇ disk control device g according to the first embodiment of the present invention.
  • the ISO fetch pointer indicates a different buffer from the IDE fetch pointer in the ring buffer 103 as shown in Fig. 6, it is determined that the DV data not transmitted to the outside is in the buffer.
  • the DV data in the buffer indicated by the ISO extraction pointer is transferred, and the data points to the same position, it is determined that the DV data extraction from the disk device 105 is delayed and one error processing S is performed.
  • Previously transferred Resend DV data.
  • transmission to the external device starts after the DV data is stored in the ring buffer.
  • the ISO fetch pointer of the ring buffer 103 is incremented to indicate the next buffer. At that time, if it exceeds the buffer, return the ISO fetch pointer to the highest position.
  • the video / audio data management means 106 determines whether the ISO fetch pointer and the IDE fetch pointer in the ring buffer 103 do not indicate the same buffer, or immediately after receiving a playback start request. It is determined that there is an empty buffer in the ring buffer 103 and the area management information management means 107 retrieves the next playback LFA A request is issued to obtain the next playback LFA information, and a logical frame address and an IDE capture pointer to be played back are passed to the data recording and playback stage 104, and a DV data removal request is issued. Otherwise, it is determined that the read-ahead of the DV data is fully stored in the ring buffer 103, and the DV data is not extracted from the disk device.
  • the data recording / reproducing means 104 which has received the DV data take-out request sends the logical frame address to be reproduced to the area management information managing means 107, and issues the LFA 'PFA conversion request to issue the disk device 105 indicated by the physical frame address obtained.
  • the DV data is read out from the data area of the ring buffer 103 and stored in the buffer indicated by the IDE capture pointer of the ring buffer 103 in a predetermined procedure. At that time, the IDE capture pointer is incremented to point to the next buffer. If the buffer exceeds the buffer, the IDE capture pointer is returned to the position indicating the highest buffer.
  • the DV data is read from the external interface means 102 at regular intervals (about 33 ms in the case of DV data), but the data recording / reproducing means 104 reads the DV data from the disk device 105
  • the disk unit 1.05 is ready to receive data
  • reading one frame of data from the disk unit takes about 8 ms if the LBA is continuous and the read-ahead cache is valid for HDDs, and about 8 ms if the cache is invalid. Seek time is added.
  • the reading from the disk device is much faster than the transfer rate of the DV data taken out from the external interface means 102, so the ring buffer DV data which has not been transferred to the external interface means 102 is fully read ahead in the buffer.
  • the reproduction of the DV data is lost when reading from the disk device 105 is delayed until the DV data of the ring buffer becomes empty.
  • the ring buffer has a capacity of 11 frames, there is a margin of about 0.3 seconds at 10X 33ms, and this time absorbs the seek time generated by the disk unit 105 and the retry processing time at the time of read error. it can. However, if random access occurs to all of the 10 frames or if some retry processing occurs, DV data may not be read from the disk device.
  • the area management information management means 107 Upon receiving the next playback LFA take-out request, the area management information management means 107 uses the playback start logical frame address shown in FIG. Return to the management means 106 and increment the playback start logical frame address by one. Notice.
  • the external interface means 102 when the external interface means 102 receives a partial deletion request, it issues a partial deletion request to the area management information management means 107.
  • the area management information management means 107 sets the start and end of the recording area management information area n and the area of the unrecorded management information so that the recording area in the partially deleted area becomes an unrecorded area. n Start ⁇ End Change physical frame address.
  • the small recording area may be divided after the logical front recording area, or before the logical rear recording area, or both.
  • the video and audio data can be reproduced without interruption by eliminating the small recording area.
  • the small recording area is set to be less than 10 consecutive frames.
  • FIG. 8 is a diagram showing an example in which the recording area without the disk control device according to the first embodiment is moved after the logical front recording area to eliminate the recording core area of less than 10 frames.
  • the upper three bars are the physical images when moving the recording area
  • the lower left table shows the storage area management information of the physical images by the number of frame addresses.
  • the lower right table shows the non-storage area management information of the physical image by the number of frame addresses.
  • the small recording area ⁇ remaining after the deletion in step 802 is moved to the end of the front recording area ⁇ , To enable continuous reproduction of audio data without interruption.
  • FIG. 9 is a diagram showing an example in which the small recording area of the disk control device according to the first embodiment is moved to the front of the logical rear recording area to eliminate the recording area of less than 10 frames.
  • step 902 After partially deleting the recording area 9 in step 901, the small recording remaining after deletion in step 902
  • the area (2) is moved to the beginning of the recording area (3), which is the backward recording area, so that the video and audio data can be reproduced continuously without interruption.
  • FIG. 10 is a block diagram of the disk control device according to the first embodiment in which the small recording area B is divided and moved after the logical front recording area and before the logical rear recording area, and the 10 FIG. 4 is a diagram showing an example of eliminating a recording area smaller than a recording area.
  • step 1001 after partially deleting the recording area (1) in step 1001, the small recording area (2) remaining after the deletion in step 1002 is divided into two, and the recording area (3) and the recording area are recorded. Move to the beginning of area (2) so that video and audio data can be played continuously without interruption as a new recording area and (recording area).
  • Another method is to move the end of the logical front recording area to the physical front unrecorded area of the small recording area. Move the beginning of the logically backward recording area to the unrecorded area, or physically behind the small recording area! This eliminates the need for a small recording area so that video and audio data can be reproduced without interruption.
  • FIG. 11 shows that the end portion of the logical front area is moved physically ahead of the small recording area of the disk control device according to the first embodiment so that the recording area continues at least 10 frames or more.
  • FIG. 12 shows that the start of the logical rear recording area is moved to the rear of the disk control device according to the first embodiment physically at a position of at least 10
  • FIG. 9 is a diagram showing an example in which frames or more are continuous.
  • a small recording area that may cause frame drop during playback may occur. If this occurs, another method is to move the necessary frames from the end of the entire small recording area and the logical front recording area to the large unrecorded area, or to move the entire small recording area and the logical rear recording area. By moving the necessary frames from the beginning to the large unrecorded area, the small recorded area is eliminated, so that the audio and video data can be reproduced without interruption.
  • FIG. 13 shows that the necessary recording frame is moved to the large unrecorded area by moving the entire small recording area of the disk control device according to the first embodiment and the end of the logical front recording area to the large unrecorded area.
  • FIG. 13 is a diagram showing an example in which 10 or more frames are continuous.
  • the part of the end part of the recording area 1 and the smaller recording area ⁇ after deletion are moved backward in 302, and the video and audio data is interrupted so that the recording area is continuous for 10 frames or more. It can be played continuously without any music.
  • FIG. 14 shows a case where the necessary recording area is moved from the beginning of the logical recording area and the rear end of the logical rear recording area to the large unrecorded area of the disk control device according to the first embodiment, so that the recording area is reduced.
  • FIG. 9 is a diagram showing an example in which at least 10 frames are continuous.
  • the relevant unrecorded area is logically associated with the physical front recorded area.
  • the required frame is moved from the beginning of the proper rear recording area, or the required frame is moved from the end of the logical front recording area to the physical rear recording area to the corresponding unrecorded area. Eliminate small unrecorded areas so that video and audio data are not lost when recording.
  • the small unrecorded area is set to be less than 10 consecutive frames.
  • the first unrecorded area is the start of recording even if it is less than 10 frames. No loss of audio data occurs.
  • FIG. 15 shows a case where necessary frames are moved from the head of the logical rear recording area to the physical front recording area to the small unrecorded area of the disk control device according to the first embodiment
  • FIG. 9 is a diagram showing an example of eliminating an unwritten ⁇ R area of less than 10 frames.
  • FIG. 15 after the partial deletion of the recording area ⁇ was performed in the step 1501, a part of the starting end of the recording area ⁇ was partially deleted in the recording area ⁇ in the step 1502. The video and audio data can be played continuously without interruption.
  • FIG. 16 shows the disk controller according to the first embodiment in which the necessary frame is moved to the small, unrecorded area from the end of the logical front recording area with respect to the physical rear recording area.
  • FIG. 10 is a diagram showing an example of eliminating an unrecorded area of less than 10 frames.
  • a part of the end portion of the recording area ⁇ was partially deleted in the recording area ⁇ in step 1602.
  • the video and audio data can be played continuously without interruption.
  • another method is to add the physical end of the front recorded area to the unrecorded area logically backward. Move the necessary frame to the beginning of the recording area, or move the beginning of the page area physically backward to the corresponding unmarked ⁇ g area to the end of the logical forward recording area. By moving the frame, the small unrecorded area is extended to 10 frames or more to prevent loss of video and audio data when recording.
  • FIG. 17 shows the movement of the end of the physical front recording area and the necessary frame to the beginning of the logical rear recording area for the small unrecorded area of the disk controller according to the first embodiment.
  • FIG. 9 is a diagram showing an example of eliminating an unrecorded area of less than 10 frames.
  • step 1701 after partially deleting the recording area ⁇ , in step 1702, a part of the ending part of the recording area ⁇ is moved to the starting end of the recording area 3.
  • video and audio data can be played continuously without interruption.
  • FIG. 18 is a block diagram of the disk control device according to the first embodiment, in which the head part of the physical rear recording area for the small, unrecorded area is required as the end part of the logical front recording area.
  • FIG. 9 is a diagram showing an example in which an unrecorded area of less than 10 frames is eliminated by moving frames.
  • step 1801 after partially deleting the recording area (1) in step 1801, part of the end of the recording area (3) is moved to the end of recording area (2) in step 1802.
  • video and audio data can be played continuously without interruption.
  • the end portion of the physical front recording area with respect to the corresponding unrecorded area is replaced with a large unrecorded area. Or move the beginning of the physical rear recording area to the corresponding unrecorded area, and move the necessary frame to the larger unrecorded area to reduce the smaller unrecorded area by one. By extending it to 0 frames or more, video and audio data will not be lost during recording.
  • FIG. 19 is a diagram showing an example in which the end portion of the physical front recording area is moved by a necessary frame to the large unrecorded area with respect to the small unrecorded area of the disk control device according to the first embodiment.
  • FIG. 11 is a diagram illustrating an example of eliminating an unrecorded area of less than 0 frame.
  • FIG. 20 shows that the head portion of the physical rear recording area is moved by a necessary frame to the large unrecorded area with respect to the small unrecorded area of the disk control device according to the first embodiment.
  • FIG. 11 is a diagram illustrating an example of eliminating an unrecorded area of less than 0 frame.
  • the video / audio data management means 106 Upon receiving the recording stop request, the video / audio data management means 106 sends an area management information storage request to the area management information management means 107, and the area management information management means 107 records the area management information as data.
  • the data is sent to the reproducing means 104, and the data recording / reproducing means 104 is supplied with the area management information.
  • Information is recorded on the disk device 105. ,:
  • the area management information for logically managing the recording area of the video / audio data is introduced, and the video / audio data is recorded. It is possible to logically delete a part, and when reproducing video and audio data, it is guaranteed that even in physically separated areas, video and audio data can be reproduced without loss like logically continuous data. When recording audio and video data in the deleted area, the video and audio data is recorded without loss even in the physically separated area. Disk control device and disk control realized by area management of image and audio data, so that frame drop does not occur during playback and recording in physically small divided areas The law can be obtained.
  • the present invention may be any disk device, such as a magneto-optical disk device or a random access memory such as a DVD-RAM. ⁇ Similar effects can be obtained by using a device having an access function.
  • connection means between the disk control device 100 and the disk device 105 is shown as a configuration connected by an IDE interface.
  • the interface connecting the two devices is a SCSI interface or the like. Any interface means can be used as long as the interface means can transfer the digital signal of the present invention, and is not limited to the configuration of the first embodiment.
  • the divided small climbing area or unrecorded area is described as 10 frames. However, other small numbers may be used, and the present invention is limited to the configuration of the first embodiment. It is not what is done.
  • FIG. 21 is a block diagram for explaining a disk device 120 according to the second embodiment of the present invention.
  • disk device 120 of the second embodiment those having functions and configurations similar to those of the first embodiment shown in FIG. 1 described above are given the same reference numerals, and description thereof is omitted.
  • the disk device 120 of the second embodiment is the disk control device of the first embodiment. It has a function of 100, and each means in the disk control device of the first embodiment is built in the disk device.
  • a disk device 120 As shown in FIG. 21, a disk device 120 according to the second embodiment has a magnetic disk 111 as a recording medium, and writes and reads digital signals to and from this magnetic disk 111.
  • a magnetic head 1 1 2 is provided inside.
  • the data recording / reproducing means 104 performing data recording / reproducing work on the disk device via the IDE interface is replaced by the magnetic head 112 in the second embodiment. Control of writing and reading of digital signals to and from the magnetic disk 111 is executed.
  • blocks assigned the same reference numerals as those in the first embodiment perform the same processing as in the first embodiment. Therefore, in response to various requests from the external ⁇ connected to the IEEE 1394 path 101, each block in the disk device of the second embodiment executes the same operation as that of the first embodiment. I do.
  • the functions of the disk device 105 according to the first embodiment can be implemented in an electric / electronic circuit.
  • the cost and size of the disk device for recording and reproducing video and audio data are reduced. It is possible to aim at.
  • the disk control device and the disk device in the above embodiment have been described as having a configuration in which the external device is connected via the IEEE1394 path.
  • the path may be any path capable of transmitting and receiving signals, and is not limited to the configuration of the above embodiment.
  • the disk control apparatus As described above, the disk control apparatus, the disk control method, and the disk
  • the recording device is suitable for a data processing device that records and reproduces video and audio data so that frames are not dropped.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Management Or Editing Of Information On Record Carriers (AREA)
  • Television Signal Processing For Recording (AREA)

Abstract

A disk control device, a disk control method, and a disk unit, for implementing a partial deletion function of video/voice data and being free from a frame drop when reproducing/recording from/into a region separated into physically small segments. A region control information controlling means, provided for controlling the region control information of video/voice data, is so configured as to move a recording region reduced in size and to move also a non-recording region separated into physically small segments when part of a recording region of continuous video/voice data is deleted to be separated into discontinuous, physically small segments.

Description

明 細 書 ディスク制御装置、 ディスク制御方法、 およびディスク装置 技術分野  Description Disk control device, disk control method, and disk device
本発明は、 ディスク制御装置、 ディスク制御方法およびディスク装置に関し、 特 に映像音声データの記録領域を論理的に管理し、部分削除を可能とした領域管理情 報 （ファイルシステム） を導入し、 物理的に分断された領域でも論理的に連続した データのように再生するディスク制御装置、ディスク制御方法およびディスク装置 に関するものである。 背景技術  The present invention relates to a disk control device, a disk control method, and a disk device. In particular, the present invention introduces area management information (file system) that logically manages a recording area of video and audio data and enables partial deletion, The present invention relates to a disk control device, a disk control method, and a disk device that reproduce data as logically continuous data even in a region that has been partitioned. Background art
近年、磁気ディスク装置や光ディスク装置等のディスク装置は、 記録容量及び転 送速度に関する性熊が急速に向上しており、動画像データである映像音声データの 記録再生に用いられることが多くなつてきている。 特に、ハードディスク装置の性 能向上は著しく、 映像音声データの蓄積 ·配信等を行う映像サーバ、 映像音声デー タの編集を行う編集機等にハードディスク装置が利用されている。 - 映像音声データは、 コンピュータで扱われるプログラム等のデータと比較して、 途切れのない連続したデータ （以下、 ストリームデータと称す） であるという特徴 を有している。 つまり、再生中においては一定周期毎にストリームデータを外部に 出せるようにディスクから途切れる事なく読み出し、記録中においては一定周期毎 に外部から入力されるストリームデータをディスクに途切れる事なく書き込む必 要がある。  In recent years, disk devices such as magnetic disk devices and optical disk devices have rapidly improved in terms of recording capacity and transfer speed, and are increasingly used for recording and reproducing video and audio data as moving image data. ing. In particular, the performance of hard disk devices has been greatly improved, and hard disk devices are used in video servers that store and distribute video and audio data, and in editing machines that edit video and audio data. -Video and audio data is characterized by being uninterrupted and continuous data (hereinafter referred to as stream data) as compared to data such as programs handled by computers. In other words, during playback, it is necessary to read stream data from the disk at regular intervals so that it can be output to the outside without interruption, and during recording, it is necessary to write stream data input from outside at constant intervals to the disk without interruption. is there.
ディスク装置にあっては、ディスクに記録された映像音声データを管理するため の領域管理情報を持ち、映像音声データを記録する時あるいは編集操作を終了した 時に、上述の映像音声データを管理するための領域管理情報をディスクに記録され るようになっている。 また領域管理情報を操作する事により、 映像音声データの不 要な部分を削除して物理的には記録領域が飛んでいる力 再生時に連続データとし て再生出来るようにし、更に削除された領域を未記録領域として記録時に映像音声 データを記録出来るようにしている。 The disk device has area management information for managing the video and audio data recorded on the disk, and manages the above-mentioned video and audio data when recording the video and audio data or when the editing operation is completed. Area management information is recorded on the disc. Also, by operating the area management information, unnecessary portions of the video / audio data are deleted so that the recording area can be physically played back and played back as continuous data during playback. Video and audio during recording as unrecorded area Data can be recorded.
ところが、 上記従来のディスク装置では、 映像音声データの部分削除を行った時 に、映像音声データを物理的に移動させないで領域管理情報のみの操作とする場合、 部分削除を繰り返すことによりディスク上に小さい記録領域が物理的に^在する 状況が発生し、映像音声データを再生する時にディスクから映像音声データを取出 す処理が遅れフレームドロップが発生するという問題があった。  However, in the above-described conventional disk device, when the operation of only the area management information is performed without physically moving the video and audio data when the partial deletion of the video and audio data is performed, the partial deletion is repeatedly performed on the disk. When a small recording area physically exists, the process of extracting the video and audio data from the disc when reproducing the video and audio data is delayed, and a frame drop occurs.
また、部分削除時に映像音声データを物理的に移動させてディスク上の連続性を 維持しようとした場合、データ移動に多大な時間が必要となるという問題もあった。 また、 映像音声データをディスクに記録する時、未記録嶺域が小さく物理的に離 れた位置に点在している場合、未記録領域に映像音声データを書き込む処理が遅れ フレームドロップが発生するという問題もあった。  In addition, if the video / audio data is physically moved at the time of partial deletion to maintain the continuity on the disk, there is a problem that much time is required for data movement. Also, when recording audio / video data on a disc, if the unrecorded area is small and scattered at physically separated positions, the process of writing the audio / video data to the unrecorded area is delayed and frame drop occurs. There was also a problem.
本発明は、 上記のような問題点を解決するためになされたものであり、 映像音声 データの部分削除機能を映像音声データの領域管理で実現し、物理的に小さく分断 された領域を移動させることにより、 フレームドロップが発生しないようなデイス ク制御装置、 ディスク制御方法およびディスク装置を提供することを目的とする。 発明の開示  The present invention has been made to solve the above-described problems, and realizes a function of partially deleting video and audio data by managing the area of the video and audio data to move a physically small and divided area. Accordingly, an object of the present invention is to provide a disk control device, a disk control method, and a disk device in which frame drop does not occur. Disclosure of the invention
本発明の請求の範囲第 1項に係るディスク制御装置は、外部機器との信号を送受 信するインターフェース手段と、上記インターフェース手 Ϊが記録開始要求を受け 取った時、外部機器から受信した映像音声データを、 また再生開始要求を受け取つ た時、 外部ディスク装置からの映像音声データを格納するための格納手段と、 上記 格納手段により格納されている映像音声データを記録し、また外部ディスク装置か らの映像音声データを再生するデータ記録再生手段と、上記データ記録再生手段に 映像音声データの記録要求または取り出し要求を発行する映像音声データ管理手 段と、上記データ記録再生手段と上記映像音声データ管理手段とから送られてくる 映像音声データの領域管理情報を管理する領域管理情報管理手段とを備え、上記領 域管理情報管理手段は、連続する映像音声データの記録領域の一部分が削除され、 記録領域が物理的に小さく.分断されて不連続になった場合; 小さくなった記 域 を移動させる、 また連続する映像音声データの記録領域の一部分が削除され、物理 的に小さく分断された未記録領域が発生した場合、上記未記録領域を移動させるこ とを特^ [とするものである。 The disk control device according to claim 1 of the present invention includes an interface means for transmitting / receiving a signal to / from an external device, and a video / audio signal received from the external device when the interface means receives a recording start request. Storage means for storing the data and the video / audio data from the external disk device when a playback start request is received; and the video / audio data stored by the storage means being recorded. Data recording / reproducing means for reproducing the video / audio data, a video / audio data management means for issuing a recording / retrieving request of the video / audio data to the data recording / reproducing means, the data recording / reproducing means and the video / audio data And area management information management means for managing area management information of the video and audio data sent from the management means. The area management information management means removes a part of the recording area of the continuous video / audio data and physically reduces the recording area; when the recording area is divided and becomes discontinuous; the reduced recording area is moved; A part of the recording area for continuous audio and video data is deleted and When an unrecorded area which is divided into small parts is generated, the unrecorded area is moved.
本発明によれば、 一度記録した映像音声データに対して不要な部分を削除した り、再生時には削除した部分を除いた映像音声データを連続データのように取り扱 えたり、削除したエリアを再度記録するための領域として嫁用可能にすることがで さる。  According to the present invention, unnecessary portions can be deleted from video and audio data that has been recorded once, video and audio data excluding the deleted portions can be treated as continuous data during playback, and the deleted area can be re-created. It can be used as an area for recording.
本発明の請求の範囲第 2項に係るディスク制御装置は、請求の範囲第 1項に記載 のディスク制御装置において、 上記領域管理情報管理手段は、上記記録領域または 上記未記録領域を物理的なァドレスと論理的なァドレスとで管理することを特徴 とするものである。  The disk control device according to claim 2 of the present invention is the disk control device according to claim 1, wherein the area management information management means physically stores the recorded area or the unrecorded area. It is characterized by managing with address and logical address.
本発明によれば、個々の記録領域と未記録領域の特定を容易にすることができる。 本発明の請求の範囲第 3項に係るディスク制御装置は、請求の範囲第 1項に記載 のディスク制御装置において、 上記領域管理情報管理手段は、個々の上記記録領域 または上記未記録領域をそれぞれ 1から Nまで番号付けを 'して管理することを特 徴とするものである。 ：'  According to the present invention, it is possible to easily specify individual recording areas and unrecorded areas. The disk control device according to claim 3 of the present invention is the disk control device according to claim 1, wherein the area management information management means manages each of the recorded areas or the unrecorded areas respectively. It is characterized by the numbering and management of numbers from 1 to N. : '
本発明によれば、個々の記録領域と未記録領域の管理を容易にすることができる。 本発明の請求の範囲第 4項に係るディスク制御装置は、請求の範囲第 1項に記載 のディスク制御装置において、 上記領域管理情報管理手段は、領域管理情報テープ ルを持つことを特徴とするものである。  According to the present invention, management of individual recorded areas and unrecorded areas can be facilitated. A disk controller according to claim 4 of the present invention is the disk controller according to claim 1, wherein the area management information management means has an area management information table. Things.
本発明によれば、個々の記録領域と未記録領域の管理を容易にし、 かつ記録再生 の動作を短時間で正確にスタートさせることができる。 · 本発明の請求の範囲第 5項に係るディスク制御装置は、請求の範囲第 4項に記載 のディスク制御装置において、 上記領域管理情報テーブルは、記録再生領域情報テ 一ブルと、記録領域管理情報テーブルと、未記録領域管理情報テーブルとから構成 されることを特徴とするものである。 .  According to the present invention, it is possible to easily manage individual recorded areas and unrecorded areas, and to accurately start a recording / reproducing operation in a short time. · The disk control device according to claim 5 of the present invention is the disk control device according to claim 4, wherein the area management information table includes a recording / reproduction area information table and a recording area management table. It is characterized by comprising an information table and an unrecorded area management information table. .
本発明によれば、 個々の記録領域と未記録領域の管理を蓉易にし、 かつ記録再生 の動作を短時間で正確にスタートさせることができる。  ADVANTAGE OF THE INVENTION According to this invention, management of each recording area and unrecorded area can be made easy, and the operation of recording / reproduction can be started accurately in a short time.
本発明の請求の範囲第 6項に係るディスク制御装置は、請求の範囲第 1項に記載 のディスク制御装置において、連続する映像音声データの記録領域の一部分が削除 され、 記 域が物理的に小さく分断されて不連続になつ 場合、 上記領域管理情 報管理手段は、 小さく分断された記録領域を前方記録領: ^ 後、 もしくは後方記録 領域の前、 もしくは分割してその両方に移動させることを 徴とするものである。 本発明によれば、 映像音声データを部分削除する時、 次の再生時にフレームドロ ップが発生する可能性のある小さ 、記録領域をその前後の記録領域に移動させる 事により、映像音声データを再生するときにディスク上の連続領域から読み出すこ とができる。 ' A disk control device according to claim 6 of the present invention is the disk control device according to claim 1, wherein a part of a recording area of continuous video and audio data is deleted. When the recording area is physically divided into small pieces and becomes discontinuous, the above area management information management means divides the small divided recording area into a front recording area: ^ after, or before a rear recording area, or a division. And move them to both. According to the present invention, when partially deleting video and audio data, the video and audio data is moved to a recording area before and after the small recording area where a frame drop may occur at the next reproduction. It can be read from a continuous area on the disc during playback. '
本発明の請求の範囲第 7項に係るディスク制御装置によれば、請求の範囲第 1項 に記載のディスク制御装置において、連続する映像音声データの記録領域の一部分 が削除され、 記辦貝域が物理的に小さく分断されて不連続になった場合、 上記領域 管理情報管理手段は、小さく分断された記録領域の前方未記録領域に前方記録領域 の終端部分を移動させる、 もしくは小さくなった記録領域 (¾後方未記録領域に後方 記録領域の始端部分に移動させることを特徴とするもので！)る。  According to the disk control device according to claim 7 of the present invention, in the disk control device according to claim 1, a part of the recording area of the continuous video / audio data is deleted. If the data is physically divided into small pieces and become discontinuous, the area management information management means moves the end portion of the front recording area to the unrecorded area in front of the small divided recording area, or reduces the size of the recorded data. Area (¾It is characterized by moving to the beginning of the rear recording area in the rear unrecorded area!).
本発明によれば、 映像音声データを部分削除する時、 次に再生する場合のフレー ムドロップが発生する可能性のある小さい記録領域にその前後の記録領域から最 低限必要な映像音声データを移動させる事により、小さい記^ S域を大きくしてデ イスクから映像音声データを連続的に取出すことができる。  According to the present invention, at the time of partial deletion of video and audio data, the minimum necessary video and audio data is moved from the recording area before and after to a small recording area where a frame drop may occur in the next playback. By doing so, it is possible to continuously extract video and audio data from the disk by increasing the small recording area.
本発明の請求の範囲第 8項に係るディスク制御装置は、請求の範囲第 1項に記載 のディスク制御装置において、連続する映像音声データの記録領域の一部分が削除 され、 記録領域が物理的に小さく分断されて不連続にな？た場合、 上記領域管理 情報管理手段は、小さく分断された記^ R域全体と前方記録領域の終端部分から必 要なフレーム分を大きな未記録領域に移動させる、 もしぐ^;小さく分断された記録 領域全体と後方記録領域の始端部分から必要なフレーム: ^を大きな未記録領域に 移動させることを特徴とするものである。  The disk control device according to claim 8 of the present invention is the disk control device according to claim 1, wherein a part of a recording area of continuous video / audio data is deleted, and the recording area is physically Is it divided into small pieces and discontinuous? In this case, the area management information management means moves necessary frames from the end of the entire R area and the end of the front recording area to a large unrecorded area. The required frame: ^ is moved to a large unrecorded area from the entire recording area and the beginning of the rear recording area.
本発明によれば、 映像音声データを部分削除する時、 次の再生する場合において フレームドロップが発生する可能性のある小さい記録領域にその前後の記録領域 カゝら最低限必要な映像音声データを加えて、未記録領域に移動させる事により、 小 さい記録領域を大きくしてディスクから映像音声データを出来るだけ連続的に取 出すことができる。 本発明の請求の範囲第 9項に係るディスク制御装置は、請求の範囲第 1項に記載 のディスク装置において、連続する映像音声データの記録領域の一部分が削除され、 物理的に小さく分断された未記録領域が発生した場合、上記領域管理情報管理手段 は、 小さく分断された未記録領域に、 前方記,域に対する後方記録領域の先頭部 分から必要なフレーム分を移動させる、 もしくは小さく分断された未記録領域に、 後方記録領域に対する前方記録領域の終端部分から必要なフレーム分を移動させ ることを特徴とするものである。 According to the present invention, at the time of partially deleting video and audio data, the minimum required video and audio data from the recording areas before and after the small recording area where a frame drop is likely to occur in the next reproduction is performed. In addition, by moving to the unrecorded area, the small recorded area can be enlarged and video and audio data can be extracted from the disc as continuously as possible. In the disk control device according to claim 9 of the present invention, in the disk device according to claim 1, a part of a recording area of continuous video / audio data is deleted and physically divided into small parts. If an unrecorded area occurs, the area management information management means moves the necessary frame from the beginning of the rear recording area to the front and back to the small divided unrecorded area, or is divided into small pieces. It is characterized in that necessary frames are moved from the end of the front recording area to the rear recording area to the unrecorded area.
本発明によれば、 映像音声データを部分削除する時、 次の記録する場合において フレームドロップが発生する可能性のある小さい未記録領域にその前後の記録領 域から必要な映像音声データを移動させることで小さ!/、未記録領域をなくすこと ができる。  According to the present invention, when partially deleting video and audio data, necessary video and audio data is moved from a recording area before and after to a small unrecorded area where a frame drop is likely to occur in the next recording. By doing so, it is possible to eliminate unrecorded areas.
本発明の請求の範囲第 1 0項に係るディスク制御装置は、請求の範囲第 1項に記 載のディスク制御装置において、連続する映像音声データの記録領域の一部分が削 除され、 物理的に小さく分断された未記録領域が発生した場合、 上記領域管理情報 管理手段は、小さく分断された未記録領域に対して前方記録領域の終端部分を、 後 方記録領域の先頭部分に必要なフレーム分を移動させる、 もしくは小さく分断され た未記録領域に対して後方記録領域の先頭部分を、前方記録領域の終端部分に必要 なフレーム分を移動させることを特徴と.するものである。 ,  A disk control device according to claim 10 of the present invention is the disk control device according to claim 1, wherein a part of a recording area for continuous video and audio data is deleted, and When a small divided unrecorded area occurs, the area management information management means sets the end part of the front recording area for the small divided unrecorded area and the necessary frame at the head part of the rear recorded area. Or moving the head of the rear recording area with respect to an unrecorded area divided into small pieces and moving the necessary frame to the end of the front recording area. ,
本発明によれば、 映像音声データを部分削除する時、 次の記録する場合において フレームドロップが発生する可能性のある小さい未記録領域の前後記録領域から 必要な映像音声データを記録領域の前後に移動させることで、小さレヽ未記録領域を 拡張してディスクに映像音声データを保存する時出来るだけ連続的に書き込むこ とができる。  According to the present invention, when the video and audio data is partially deleted, necessary video and audio data is recorded before and after the recording area from a recording area before and after a small unrecorded area where a frame drop may occur in the next recording. By moving it, it is possible to extend the small unrecorded area and write it as continuously as possible when storing video and audio data on the disc.
本発明の請求の範囲第 1 1項に係るディスク制御装置は、請求の範囲第 1項に記 載のディスク制御装置において、連続する映像音声データの記録領域の一部分が削 除され、 物理的に小さく分断された未記録領域が発生した場合、 上記領域管理情報 管理手段は、小さく分断された未記録領域に対して前方記録領域の終端部分を、 大 きい未記 域に必要なフレーム分を移動させる、 もしくは小さく分断された未記 録領域に対して後方記録領域の先頭部分を、大きい未記録領域に必要なフレーム分 を移動させることを特徴とするものである。 A disk control device according to claim 11 of the present invention is the disk control device according to claim 1, wherein a part of a recording area for continuous video and audio data is deleted, and When a small undivided unrecorded area occurs, the area management information management unit moves the end of the front recording area to the small undivided unrecorded area and moves the necessary frame to the large unrecorded area. Or the head of the rear recording area for the unrecorded area divided into Is moved.
本発明によれば、 映像音声データを部分削除する時、 次の記録する場合において フレームドロップが発生する可能性のある小さレ、未記録領域の前後記録領域から 必要な映像音声データを大きな未記録領域に移動させることで、小さい未記録領域 を拡張してディスクに映像音声データを保存する場合、出来るだけ連続的に書き込 みを行うことができる。  According to the present invention, when the video and audio data is partially deleted, the necessary video and audio data from the recording area before and after the unrecorded area is large and unrecorded, which may cause a frame drop in the next recording. By moving to an area, the video can be written as continuously as possible when expanding the small unrecorded area and storing video and audio data on the disc.
本発明の請求の範囲第 1 2項に係るディスク制御装置は';'.請求の範囲第 1項乃至 請求の範囲第 1 1項のいずれか一項に記載のディスク制御装置において、上記ディ スクは磁気ディスクである。  The disk control device according to claim 12 of the present invention is ';'. In the disk control device according to any one of claims 1 to 11, Is a magnetic disk.
本発明によれば、磁気ディスクドライブを用いたディスク制御装置を得ることが できる。  According to the present invention, a disk control device using a magnetic disk drive can be obtained.
本発明の請求の範囲第 1 3項に係るディスク制御装置は、請求の範囲第 1項乃至 請求の範囲第 1 1項のいずれか一項に記載のディスク制御装置において、上記ディ スクは光磁気ディスクである。  The disk controller according to claim 13 of the present invention is the disk controller according to any one of claims 1 to 11, wherein the disk is a magneto-optical disk. It is a disk.
本発明によれば、光磁気ディスクドライブを用いたディ ク制御装置を得ること ができる。  According to the present invention, a disk control device using a magneto-optical disk drive can be obtained.
本発明の請求の範囲第 1 4項に係るディスク制御方法ば、外部機器との信号を送 受信するインターフェース処理と、上記ィンターフェース手段が記録開始要求を受 け取った時、外部機器から受信した映像音声データを、 また再生開始要求を受け取 つた時、外部ディスク装置からの映像音声データを格納するための格納処理と、 上 記格納手段により格納されている映像音声データを記録し、また外部ディスク装置 からの映像音声データを再生するデータ記録再生処理と、上記データ記録再生手段 に映像音声データの格納要求または取り出し要求を発行する映像音声データ管理 処理と、上記データ記録再生処理と上記映像音声データ管理処理とによつで送られ てくる映像音声データの領域管理情報を管理する領域管理情報管理処理とを含み、 上記領域管理情報管理処理では、連続する映像音声データの記録領域の一部分が削 除され、記録領域が物理的に小さく分断されて不連続になった場合、小さくなつた 記録領域を移動させる、また連続する映像音声データの記録領域の一部分が削除さ れ、 物理的に小さく分断された未記録領域が発生した^^、 上記未記録領域を移動 させることを特©：とするものである。 According to the disk control method of claim 14 of the present invention, there is provided an interface process for transmitting / receiving a signal to / from an external device, and receiving the signal from the external device when the interface unit receives a recording start request. When receiving the playback start request, the storage processing for storing the video and audio data from the external disk device, and the video and audio data stored by the storage means are recorded. A data recording / reproducing process for reproducing the video / audio data from the disk device, a video / audio data management process for issuing a storage / retrieving request of the video / audio data to the data recording / reproducing means, the data recording / reproducing process, and the video / audio Area management information management processing for managing the area management information of the video / audio data sent by the data management processing. In the area management information management processing, when a part of the recording area of the continuous video / audio data is deleted and the recording area is physically divided into small pieces and becomes discontinuous, the reduced recording area is moved. A part of the recording area of continuous video and audio data was deleted, and an unrecorded area that was physically small and divided occurred ^^, move the above unrecorded area Special feature:
本発明によれば、一度記録した映像音声データに対して不要な部分を削除したり、 再生時には削除した部分を除いた映像音声データを連続データのように取り扱え たり、削除したェリアを再度記録するための領域として使用可能にすることができ る。  ADVANTAGE OF THE INVENTION According to the present invention, unnecessary portions are deleted from video and audio data once recorded, video and audio data excluding the deleted portions can be treated as continuous data at the time of reproduction, and the deleted area is recorded again. Can be used as an area for
本発明の請求の範囲第 1 5項に係るディスク制御方法は、請求の範囲第 1 4項に 記載のディスク制御方法において、 上記領域管理情報管理処理では、上記記録領域 または上記未記録領域を物理的なァドレスと論理的なァドレスとで管理すること を特@：とするものである。  The disk control method according to claim 15 of the present invention is the disk control method according to claim 14, wherein in the area management information management processing, the recording area or the unrecorded area is It is specially designed to manage data using logical and logical addresses.
本発明の請求の範囲第 1 6項に係るディスク制御方法は、請求の範囲第 1 4項に 記載のディスク制御方法において、 上記領域管理情報管理処理では、個々の上記記 録領域または上記未記録領域をそれぞれ 1から Nまで番号付けをして管理するこ とを特徴とするものである。  The disk control method according to claim 16 of the present invention is the disk control method according to claim 14, wherein in the area management information management processing, each of the recording areas or the unrecorded areas is recorded. It is characterized in that areas are numbered and managed from 1 to N respectively.
本発明の請求の範囲第 1 7項に係るディスク制御方法は、請求の範囲第 1 4項に 記載のディスク制御方法において、上記領域管理情報管理処理では、領域管理情報 テーブルを備えたことを特@ [とするものである。  A disk control method according to claim 17 of the present invention is characterized in that, in the disk control method according to claim 14, the area management information management processing includes an area management information table. @ [
本発明の請求の範囲第 1 8項に係るディスク制御方法は、請求の範囲第 1 7項に 記載のディスク制御方法において、上記領域管理情報管理処理では、上記領域管理 情報テーブルは、 記録再生領域情報テーブルと、 記録領域管理情報テーブルと、 未 記録領域管理情報テーブルとから構成されることを特徴とするものである。  The disk control method according to claim 18 of the present invention is the disk control method according to claim 17, wherein in the area management information management processing, the area management information table includes a recording / reproducing area. It is characterized by comprising an information table, a recording area management information table, and an unrecorded area management information table.
本発明の請求の範囲第 1 9項に係るディスク制御方法は、請求の範囲第 1 4項に 記載のディスク制御方法において、連続する映像音声データの記録領域の一部分が 削除され、記録領域が物理的に小さく分断されて不連続になった場合、 上記領域管 理情報管理処理では、 小さく分断された記録領域を前方記録領域の後、 もしくは後 方記録領域の前、 もしくは分割してその両方に移動を行うことを特徴とするもので ある。  A disk control method according to claim 19 of the present invention is the disk control method according to claim 14, wherein a part of the recording area of the continuous video / audio data is deleted and the recording area is physically If the recording area is divided into smaller pieces and becomes discontinuous, the above-mentioned area management information management process divides the smaller divided recording area after the front recording area, before the rear recording area, or by dividing both. It is characterized by moving.
本発明によれば、 映像音声データを部分削除する時、 フレームドロップが発生す る可能性がある小さい記録領域をその前後の記録領域に移動させる事により、映像 音声データを再生するときにディスク上の連続領域から読み出すことができる。 本発明の請求の範囲第 2 0項に係るディスク制御方法 、請求の範囲第 1 4項に 記載のディスク制御方法において、連続する映像音声デー^の記録領域の一部分が 削除され、記録領域が物理的に小さく分断されて不連続になった場合、上記領域管 理情報管理処理では、小さく分断された記録領域の前方未記録領域に前方記 域 の終端部分に移動を行う、 もしくは小さくなった記録領域の後方未記録領域に後方 記録領域の始端部分に移動を行うことを特徴とするものである。 According to the present invention, when a part of video and audio data is deleted, a small recording area where a frame drop is likely to occur is moved to a recording area before and after the small recording area, so that a video and audio data can be reproduced on a disc. Can be read from the continuous area. A disc control method according to claim 20 of the present invention, in the disc control method according to claim 14, wherein a part of a recording area for continuous video / audio data is deleted and the recording area is physically In the area management information management process described above, if the data is divided into smaller pieces and become discontinuous, the unrecorded area in front of the smaller divided recording area is moved to the end of the front recording area, or the reduced recording is performed. It is characterized in that a movement is made to a start end portion of the rear recording area to an unrecorded area behind the area.
本発明によれば、 映像音声データを部分削除する時、 フレームドロップが発生す る可能性がある小ざい記録領域にその前後の記録領域から最低限必要な映像音声 データを移動させる事により、小さい記録領域を大きくしてディスクから映像音声 データを連続的に取出すことができる。  According to the present invention, when the video and audio data is partially deleted, the minimum necessary video and audio data is moved from the recording area before and after to the small recording area where a frame drop may occur, thereby reducing the size. By increasing the recording area, video and audio data can be continuously extracted from the disc.
本発明の請求の範囲第 2 1項に係るディスク制御方法は、請求の範囲第 1 4項に 記載のディスク制御方法において、連続する映像音声データの記録領域の一部分が 削除され、 記録領域が物理的に小さく分断されて不連続になった場合、 上記領域 管理情報管理処理では、小さく分断された記^ S域全体と前方記録領域の終端部分 力 ら必要なフレーム分を大きな未記録領域に移動を行う、 もしくは小さく分断され た記録領域全体と後方記録領域の始端部分から必要なフレーム分を大きな未記録 領域に移動を行うことを特徴とするものである。  A disc control method according to claim 21 of the present invention is the disc control method according to claim 14, wherein a part of the recording area of the continuous video / audio data is deleted and the recording area is physically If the data is divided into smaller pieces and become discontinuous, the above area management information management process moves the entire divided S area and the required frame from the end of the front recording area to the larger unrecorded area. Or moving the necessary frames from the start end of the entire recording area and the rear recording area into a large unrecorded area.
本発明によれば、 映像音声データを部分削除する時、 フレームドロップが発生す る可能性がある小さい記録領域にその前後の記録領域から最低限必要な映像音声 データを加えて、未記録領域に移動させる事により、小さ 、記録領域を大きくして ディスクから映像音声データを出来るだけ連続的に取出す；！とができる。  According to the present invention, when partially deleting video and audio data, the minimum necessary video and audio data is added to the small recording area where frame drop is likely to occur from the recording areas before and after the small recording area, and the unrecorded area is By moving it, the recording area is enlarged and the recording area is enlarged, and video and audio data is taken out from the disc as continuously as possible; Can be.
本発明の請求の範囲第 2 2項に係るディスク制御方法は、請求の範囲第 1 4項に 記載のディスク制御方法において、連続する映像音声データの記録領域の一部分が 削除され、物理的に小さく分断された未記録領域が発生した場合、 上記領域管理情 報管理処理では、小さく分断された未記録領域に、 前方記録領域に対する後方記録 領域の先頭部分から必要なフレーム分の移動を行う、 もしくは小さく分断された未 記録領域に、後方記録領域に対する前方記録領域の終端部分から必要なフレーム分 の移動を行うことを特徴とするものである。  A disk control method according to claim 22 of the present invention is the disk control method according to claim 14, wherein a part of a recording area for continuous video and audio data is deleted and the disk control method is physically reduced. When a divided unrecorded area occurs, in the area management information management process, a necessary frame is moved from the head of the rear recording area to the front recording area to the small divided unrecorded area, or It is characterized in that a necessary frame is moved from the end of the front recording area with respect to the rear recording area to a small divided unrecorded area.
本発明によれば、 映像音声データを部分削除する時、 フレームドロップが発生す る可能性がある小さレ、未記録領域にその前後の記録領域から必要な映像音声デー タを移動させることで小さ 、未記録領域をなくすことができる。 According to the present invention, when video and audio data are partially deleted, a frame drop occurs. By moving necessary video / audio data from a recording area before and after the small unrecorded area to a small unrecorded area, the small unrecorded area can be eliminated.
本発明の請求の範囲第 2 3項に係るディスク制御方法は、請求の範囲第 1 4項に 記載のディスク制御方法において、連続する映像音声データの記録領域の一部分が 削除され、物理的に小さく分断された未記録領域が発生した場合、 上記領域管理情 報管理処理では、小さく分断された未記録領域に対して前方記録領域の終端部分を、 後方記録領域の先頭部分に必要なフレーム分の移動を行う、 もしくは小さく分断さ れた未記録領域に対して後方記録領域の先頭部分を、前方記録領域の終端部分に必 要なフレーム分の移動を行うことを特徴とするものである。  A disk control method according to claim 23 of the present invention is the disk control method according to claim 14, wherein a part of the recording area of the continuous video and audio data is deleted, and the disk control method is physically reduced. When a divided unrecorded area occurs, the area management information management process sets the end of the front recording area for the small divided unrecorded area to the frame required for the beginning of the rear recording area. It is characterized by moving or moving the head of the rear recording area to the end part of the front recording area by the necessary frame for the small undivided unrecorded area.
本発明によれば、 映像音声デ―タを部分削除する時、 フレームドロップが発生す る可能性がある小さ ヽ未記録領域の前後記録領域から必要な映像音声データを記 録領域の前後に移動させることで、小さい未記録領域を拡張してディスクに映像音 声データを保存する時出来るだけ連続的に書き込むことができる。  According to the present invention, when video and audio data is partially deleted, there is a possibility that a frame drop may occur. ヽ Necessary video and audio data is moved before and after the recording area from the recording area before and after the unrecorded area. By doing so, it is possible to write as continuously as possible when storing video and audio data on a disk by expanding a small unrecorded area.
本発明の請求の範囲第 2 4項に係るディスク制御方法は、請求の範囲第 1 4項に 記載のディスク制御方法において、連続する映像音声データの記録領域の一部分が 削除され、物理的に小さく分断された未記録領域が発生した場合、 上記領域管理情 報管理処理では、小さく分断された未記録領域に対して前方記録領域の終端部分を、 大きい未記録領域に必要なフレーム分の移動を行う、 もしくは小さく分断された未 記録領域に対して後方記録領域の先頭部分を、大きい未記録領域に必要なフレーム 分の移動を行うことを特徴とするものである。  A disk control method according to claim 24 of the present invention is the disk control method according to claim 14, wherein a part of the recording area of the continuous video / audio data is deleted, and the disk control method is physically smaller. When a divided unrecorded area occurs, the area management information management process moves the end of the front recording area to the smaller divided unrecorded area, and moves the required frame to the larger unrecorded area. It is characterized in that the leading part of the rear recording area is moved by a necessary frame to the large unrecorded area with respect to the unrecorded area divided into small pieces.
本発明によれば、 映像音声データを部分削除する時、 フレームドロップが発生す る可能性がある小さレ、未記録領域の前後記録領域から必要な映像音声データを大 きな未記^ IS域に移動させることで、小さい未記録領域を拡張してディスクに映像 音声データを保存する時出来るだけ連続的に書き込むことができる。  According to the present invention, when the video and audio data is partially deleted, there is a possibility that a frame drop may occur. In this way, when saving the video and audio data to the disk by expanding the small unrecorded area, the data can be written as continuously as possible.
本発明の請求の範囲第 2 5項に係るディスク制御方法は、請求の範囲第 1 4項乃 至請求の範囲第 2 4項のいずれか一項に記載のディスク制御方法において、上記デ イスクは磁気ディスクである。 " 本発明によれば、磁気ディスクドライブを用いたディスク制御方法を得ることが できる。 本発明の請求の範囲第 2 6項に係るディスク制御方法は、請求の範囲第 1 4項乃 至請求の範囲第 2 4項のいずれか一項に記載のディスク制御方法において、上記デ イスクは光磁気ディスクである。 J The disk control method according to claim 25 of the present invention is the disk control method according to any one of claims 14 to 24, wherein the disk is It is a magnetic disk. According to the present invention, a disk control method using a magnetic disk drive can be obtained. The disk control method according to claim 26 of the present invention is the disk control method according to any one of claims 14 to 24, wherein the disk is It is a magneto-optical disk. J
本発明によれば、光磁気ディスクドライプを用いたディスク制御方法を得ること ができる。  According to the present invention, a disk control method using a magneto-optical disk drive can be obtained.
本発明の請求の範囲第 2 7項に係るディスク装置は、請求の範囲第 1項から請求 の範囲第 1 3項のいずれか一項に記載のディスク制御装置を備えたものである。 本発明によれば、映像音声データの部分削除機能を映像音声データの領域管理で 実現し、物理的に小さく分断された領域に対して再生'記録時にフレームドロップ が発生しないようなディスク装置を得ることができる。 図面の簡単な説明 '  A disk device according to claim 27 of the present invention includes the disk control device according to any one of claims 1 to 13. ADVANTAGE OF THE INVENTION According to the present invention, a function of deleting a part of video and audio data is realized by area management of video and audio data, and a disk device which does not cause a frame drop at the time of reproduction / recording in a physically small divided area is obtained. be able to. Brief description of the drawings ''
第 1図は、本発明の実施の形態 1によるディスク制御装置を説明するためのプロ ック図である。  FIG. 1 is a block diagram for explaining a disk control device according to a first embodiment of the present invention.
第 2図は、本発明の実施の形態 1によるディスク装置に記録された映像音声デー タと領域管理情報の構造を説明するための図である。  FIG. 2 is a diagram for explaining the structure of video and audio data and area management information recorded on the disk device according to the first embodiment of the present invention.
第 3図は、本発明の実施の形態 1による物理フレームァドレスと論理フレームァ ドレスとの関係を示した図である。  FIG. 3 is a diagram showing a relationship between a physical frame address and a logical frame address according to the first embodiment of the present invention.
第 4図は、本発明の実施の形態 1によるディスク装置における領域管理情報領域 に格納される領域管理情報の例を示した図である。  FIG. 4 is a diagram showing an example of area management information stored in an area management information area in the disk device according to the first embodiment of the present invention.
第 5図は、本発明の実施の形態 1によるディスク制御装置のデータ記録時のリン グバッファを説明するための図である。 : FIG. 5 is a diagram for explaining a ring buffer at the time of data recording of the disk control device according to the first embodiment of the present invention. :
第 6図は、本発明の実施の形態 1によるディスク制御装置のデータ再生時のリン グバッファを説明するための図である。  FIG. 6 is a diagram for explaining a ring buffer at the time of data reproduction of the disk control device according to the first embodiment of the present invention.
第 7図は、本発明の実施の形態 1によるディスク制御方法の記録時における次記 録 L F A算出方法を説明するためのフロー図である。  FIG. 7 is a flowchart for explaining a next recording LFA calculation method at the time of recording by the disk control method according to the first embodiment of the present invention.
第 8図は、本発明の実施の形態 1によるディスク制御装置の小さい記録領域を論 理的な前方記録領域の後に移動させて、小さい記録領域をなくす例を示す図である。 第 9図は、本発明の実施の形態 1によるディスク制御装置の小さい記録領域を論 理的な後方記録領域の前に移動させて、小さレヽ記録領域をなくす例を示す図である。 第 1 0図は、本発明の実施の形態 1によるディスク制御装置の小さ ヽ記録領域を 分割して論理的な前方記録領域の後と論理的な後方記^ s域の前に移動させて、小 さい記録領域をなくす例を示す図である。 FIG. 8 is a diagram showing an example of moving the small recording area of the disk control device according to the first embodiment of the present invention after the logical front recording area to eliminate the small recording area. FIG. 9 illustrates a small recording area of the disk control device according to the first embodiment of the present invention. FIG. 9 is a diagram showing an example in which a small recording area is eliminated by being moved to the front of a physical rear recording area. FIG. 10 shows a disk control device according to Embodiment 1 of the present invention in which a small recording area is divided and moved after a logical front recording area and before a logical rear recording area, FIG. 9 is a diagram illustrating an example of eliminating a small recording area.
第 1 1図は、本発明の実施の形態 1によるディスク制御装置の小さい記録領域の 物理的前方に論理的な前方領域の終端部分を移動させて、小さい記録領域を大きく する例を示す図である。  FIG. 11 is a diagram showing an example in which the end portion of the logical front area is moved physically ahead of the small recording area of the disk control device according to the first embodiment of the present invention to enlarge the small recording area. is there.
第 1 2図は、本発明の実施の形態 1によるディスク制御装置の小さい記録領域の 物理的後方に論理的な後方記録領域の始端部分を移動させて、小さい記録領域を大 きくする例を示す図である。 ：  FIG. 12 shows an example in which the starting point of the logical rear recording area is moved to the rear of the small recording area of the disk control device according to the first embodiment of the present invention to enlarge the small recording area. FIG. :
第 1 3図は、本発明の実施の形態 1によるディスク制御 ^置の小さい記録領域全 体と論理的な前方記録領域の終端部分から必要なフレーム分を未記録領域に移動 させて、 小さい記録領域を大きくする例を示す図である。 ― 第 1 4図は、本発明の実施の形態 1によるディスク制御装置の小さい記録領域全 体と論理的な後方記録領域の始端部分から必要なフレーム分を未記録領域に移動 させて、 小さい記録領域を大きくする例を示す図である。  FIG. 13 shows a case where a necessary recording frame is moved to an unrecorded area from the entire recording area having a small disk control position according to the first embodiment of the present invention and the end of the logical front recording area, and the small recording is performed. It is a figure showing the example which enlarges a field. -FIG. 14 shows a small recording area of the disk control device according to the first embodiment of the present invention, in which the necessary frames are moved from the beginning of the logical rear recording area to the unrecorded area. It is a figure showing the example which enlarges a field.
第 1 5図は、本発明の実施の形態 1によるディスク制御装置の小さい未記録領域 に、物理的な前方記録領域に対する論理的な後方記録領域の先頭部分から必要なフ レーム分を移動させて、 1 0フレーム未満の未記録領域をなくす例を示す図である。 第 1 6図は、本発明の実施の形態 1によるディスク制御装置の小さい未記^ S域 に、物理的な後方記録領域に対する論理的な前方記録領域め終端部分から必要なフ レーム分を移動させて、 1 0フレーム未満の未記録領域をなくす例を示す図である。 第 1 7図は、本発明の実施の形態 1によるディスク制御装置の小さい未記 ½g域 に対して物理的な前方記録領域の終端部分を、論理的な後方記録領域の先頭部分に 必要なフレーム分を移動させて、 1 0フレーム未満の未記録領域をなくす例を示す 図である。  FIG. 15 shows a case where a necessary frame is moved from the head of the logical rear recording area to the physical front recording area to the small unrecorded area of the disk control device according to the first embodiment of the present invention. FIG. 10 is a diagram showing an example of eliminating an unrecorded area of less than 10 frames. FIG. 16 shows a case where necessary frames are moved from the end of the logical front recording area to the physical rear recording area to the small unrecorded ^ S area of the disk control device according to the first embodiment of the present invention. FIG. 9 is a diagram showing an example of eliminating an unrecorded area of less than 10 frames. FIG. 17 shows a frame required for a small unrecorded 物理 g area of the disk control device according to the first embodiment of the present invention, with the end portion of the physical front recording area at the beginning of the logical rear recording area. FIG. 9 is a diagram showing an example in which an unrecorded area of less than 10 frames is eliminated by moving the minutes.
第 1 8図は、本発明の実施の形態 1によるディスク制御装置の小さい未記録領域 に対して物理的な後方記録領域の先頭部分を、論理的な前方記録領域の終端部分に 必要なフレーム分を移動させて、 1 0フレーム未満の未記録領域をなくす例を示す 図である。 FIG. 18 is a diagram showing an example in which the head of the physical rear recording area for the small unrecorded area of the disk control device according to the first embodiment of the present invention is replaced with the frame required for the end of the logical front recording area. The following shows an example of moving the to eliminate the unrecorded area of less than 10 frames FIG.
第 1 9図は、本発明の実施の形態 1によるディスク制御装置の小さい未記録領域 に対して物理的な前方記録領域の終端部分を、大きい未記録領域に必要なフレーム 分を移動させて、 1 0フレーム未満の未記録領域をなくす例を示す図である。 第 2 0図は、本発明の実施の形態 1によるディスク制御装置の小さレ、未記録領域 に対して物理的な後方記録領域の先頭部分を、大きい未記録領域に必要なフレーム 分を移動させて、 1 0フレーム未満の未記録領域をなくす例を示す図である。 第 2 1図は、 本発明の実施形態 2によるディスク装置を説明するためのブロッ ク図である。 発明を実施するための最良の形態  FIG. 19 is a diagram illustrating a disk control device according to the first embodiment of the present invention in which the end portion of the physical front recording area is moved to the small unrecorded area, and the necessary frame is moved to the large unrecorded area. FIG. 11 is a diagram showing an example of eliminating an unrecorded area of less than 10 frames. FIG. 20 shows the disk control apparatus according to Embodiment 1 of the present invention in which the head of the physical rear recording area is moved relative to the small unrecorded area and the necessary frame is moved to the large unrecorded area. FIG. 4 is a diagram showing an example of eliminating an unrecorded area of less than 10 frames. FIG. 21 is a block diagram for explaining a disk drive according to Embodiment 2 of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION
以下、 本発明の実施の形態について説明する。  Hereinafter, embodiments of the present invention will be described.
(実施の形態 1 )  (Embodiment 1)
第 1図は、本発明の実施の形態 1によるディスク制御装置 1 0 0を説明するため のブロック図である。  FIG. 1 is a block diagram for explaining a disk control device 100 according to Embodiment 1 of the present invention.
本実施の形態 1のディスク制御装置 1 0 0は、デジタル V C R等の外部機器から の映像音声信号及ぴ制御信号 （コマンド） を転送する I Ε Ε 1 3 9 4パス 1 0 1 と、該 I E E E 1 3 9 4パス 1 0 1を介して外部機器とめ^ジタル信号を送受信す る外部インターフェース手段 1 0 2と、該インターフェース手段 1 0 2が記録開始 要求を受け取った時、 外部機器から受信した D Vフォーマツトの映像音声データ The disk controller 100 according to the first embodiment includes an I Ε 1394 path 101 for transferring a video / audio signal and a control signal (command) from an external device such as a digital VCR and the IEEE 1394 path. 1 3 9 4 External interface means 102 for transmitting / receiving a digital signal to / from an external device via path 101, and when the interface means 102 receives a recording start request, DV received from the external device. Formatted audio and video data
(以下、 D Vデータと略称する） を格納する、 また再生開始要求を受け取った時、 ディスク装置から映像音声データを格納するためのリングバッファ 1 0 3と、該リ ングバッファ 1 0 3上の D Vデータを記録し、また外部ディスク装置 1 0 5からの D Vデータを再生するデータ記録再生手段 1 0 4と、該データ記録再生手段 1 0 4 に D Vデータの格納要求または取り出し要求を発行する映像音声データ管理手段 1 0 6と、上記データ記録再生手段 1 0 4と上記映像音声 、ータ管理手段 1 0 6と から送られてくる D Vデータの領域管理情報を管理する領域管理情報管理手段 1 0 7とから構成されている。 (Hereinafter abbreviated as DV data). When a playback start request is received, a ring buffer 103 for storing video and audio data from the disk device, and a DV on the ring buffer 103 are stored. Data recording / reproducing means 104 for recording data and reproducing DV data from the external disk device 105, and video / audio for issuing a request for storing or retrieving DV data to the data recording / reproducing means 104. Area management information management means 10 for managing the area management information of the DV data sent from the data management means 106, the data recording / reproduction means 104, the video / audio data management means 106, and the like. It consists of seven.
また、 本実施の形態 1によるディスク制御装置 1 0 0において、外部のディスク 装置 105としては I DEインターフェースを備えたハードディスク装置 （HD D) を用いているとする。 ハードディスク装置の記録領域は、 512パイトを 1セ クタとしてセクタ単位で管理され、 各セクタに対して論理ブロックアドレス （LB A) が割り当てられている。 ； Also, in the disk control device 100 according to the first embodiment, an external disk It is assumed that a hard disk device (HDD) having an IDE interface is used as the device 105. The recording area of the hard disk drive is managed on a sector basis with 512 bytes as one sector, and a logical block address (LBA) is assigned to each sector. ;
第 2図は、本発明の実施の形態 1によるディスク装置に言さ録された映像音声デー タと領域管理情報の構造を説明するための図である。  FIG. 2 is a diagram for explaining the structure of video / audio data and area management information recorded on the disk device according to the first embodiment of the present invention.
第 2図で示すように、 ディスク装置 105のディスク記録可能領域の先頭領域 (LBAの小さい領域） は、領域管理情報領域として割り当て、 残りを DVデータ 記録可能領域として DVデータを記録する領域として割り当てている。 DVデータ 記録可能領域は、 DVデータのフレーム単位でフレームアドレス （FA) を 0から 割り振つている。 このフレームアドレスを物理フレームアドレス （PFA) と呼ぴ、 HDD上に固定で割り振ることになる。 また、再生やサーチを行う時に記録再生デ イスク装置外から見えるフレームアドレスを論理フレームアドレス （LFA) と呼 び、 0からとぶことなく順番にふられ、 再生時にはこの順番に再生される。 ここで は、 LFAと PFAが同じでもディスク装置 105上の位置は異なる。  As shown in FIG. 2, the first area (area with a small LBA) of the disk recordable area of the disk device 105 is allocated as an area management information area, and the remaining area is allocated as a DV data recordable area as an area for recording DV data. ing. In the DV data recordable area, the frame address (FA) is assigned from 0 in the DV data frame unit. This frame address is called a physical frame address (PFA) and is fixedly allocated on the HDD. Also, the frame address that is visible from outside the recording / reproducing disk device when performing playback or search is called a logical frame address (LFA), and is assigned in order without skipping from 0, and is played back in this order during playback. Here, the positions on the disk device 105 are different even if the LFA and the PFA are the same.
第 3図は、本発明の実施の形態 1による物理フレームァドレスと論理フレームァ ドレスとの関係を示した図である。  FIG. 3 is a diagram showing a relationship between a physical frame address and a logical frame address according to the first embodiment of the present invention.
第 3図において、 映像音声データがまったく無い状態からの記録では、 LFAと PFAは一致している。 第 3図では、 0から 1000までの 1001フレームが記 録されている状態で、 LFAの 401から 200フレーム分を削除した場合を示し、 記録領域は二つに分断されるが LF Aは 0から 800まで連続して振り直される。 この状態で追加記録を行って、 1101フレーム分が記録されている状態にした後、 LF Aの 651から 200フレーム分を部分削除した状態では、記録領域が 3つ、 未記録領域が 3つになる。 この状態で、 追加記録した場合、^未記録領域 1に全て映 像音声データが記録されたら未記録領域 2が示す領域に^像音声データを記録し ていく。  In Fig. 3, the LFA and PFA match when recording from a state where there is no video / audio data. Fig. 3 shows a case where 1001 frames from 0 to 1000 are recorded and 200 frames from LFA 401 to 200 are deleted.The recording area is divided into two, but LFA is from 0. It is continuously re-rolled up to 800. In this state, additional recording is performed, and after 1101 frames are recorded, after 200 frames from LFA 651 are partially deleted, there are three recorded areas and three unrecorded areas. Become. In this state, when additional recording is performed, if all the video and audio data are recorded in the unrecorded area 1, then the video and audio data are recorded in the area indicated by the unrecorded area 2.
第 4図は、本発明の実施の形態 1によるディスク装置における領域管理情報領域 に格納される領域管理情報の例を示した図である。  FIG. 4 is a diagram showing an example of area management information stored in an area management information area in the disk device according to the first embodiment of the present invention.
領域管理情報として、 記録再生領域情報、 記録領域管理情報、 未記録領域管理情 報の 3つがある。 ： The area management information includes recording / playback area information, recording area management information, and unrecorded area management information. There are three reports. :
記録再生領域情報には、次に記録される D Vデータを格鈉する位置を示す記録開 始論理フレームァドレス、次に再生される D Vデータが格納されている位置を示す 再生開始論理フレームァドレス、記録されている D Vデータの最 立置を示す最終 記録論理フレームァドレス、ディスク装置に記録可能なフレーム数を示す記録可能 総フレーム数がある。  The recording / reproducing area information includes a recording start logical frame address indicating a position where the DV data to be recorded next is stored, a reproduction start logical frame address indicating a position where the next DV data to be reproduced is stored, and recording. There is a final recording logical frame address indicating the top of the DV data recorded, and the total number of recordable frames indicating the number of frames recordable on the disk device.
記録領域管理情報には、領域 nの開始物理フレームァドレスと終了物理フレーム アドレスがある。 nは 1から順番にあり、 記録された DVデータを再生する時は、 領域 1にある D Vデータを再生した後、 順に領域 2、 3…と再生される。 L F Aも、 領域 1から順番に振られる。  The recording area management information includes a start physical frame address and an end physical frame address of the area n. n is in order from 1. When playing back the recorded DV data, the DV data in the area 1 is played back, and then the areas 2, 3, ... are played back in order. L F A is also assigned in order from region 1.
未記録領域管理情報には、領域 nの開始物理フレームァ 1?レスと終了物理フレー ムアドレスがある。 nは 1から順番にあり、 D Vデータ^ ffi録する時は、 領域 1に あたるディスク上の領域に D Vデータを書き込み、領域 1の開始物理フレームァド レスは 1インクリメントされる。 その時、 終了物理フレームアドレスと同一の場合 は、 領域 1の領域が無くなつたので、 領域 2の P F Aを領域 1にコピーし、 領域 3 の P F Aを領域 2にコピーすると必要な分だけ領域データをずらして、次の D Vデ ータ記録は、 新しい領域 1に対して行う。  The unrecorded area management information includes the start physical frame address of the area n and the end physical frame address. n is in order from 1, and when recording DV data, the DV data is written to the area on the disk corresponding to the area 1, and the start physical frame address of the area 1 is incremented by one. At that time, if it is the same as the end physical frame address, the area 1 area has been lost, so the area 2 PFA is copied to area 1 and the area 3 PFA is copied to area 2 and the necessary area data is copied. Offset the next DV data recording to the new area 1.
次に動作について説明する。  Next, the operation will be described.
本実施の形態 1のディスク制御装置における動作は、記録処理動作、 再生処理動 作、部分削除コマンド処理動作及び記録停止コマンド処理動作の 4つの動作に大別 することができるが、 初めに記録処理動作について説明す'る。  The operation of the disk control device according to the first embodiment can be broadly divided into four operations of a recording processing operation, a reproducing processing operation, a partial deletion command processing operation, and a recording stop command processing operation. The operation will be described.
第 1図において、 外部インターフェース手段 1 0 2は、物理層のインターフエ一 ス制御を実行する P HY回路と、論理層のインターフェース制御を実行する L I N K回路等で構成されているが、 記録開始要求を受け取った時、外部 βから受信し た D Vデータをリングバッファ 1 0 3に転送する。  In FIG. 1, the external interface means 102 is composed of a P HY circuit for controlling the interface of the physical layer, a LINK circuit for controlling the interface of the logical layer, and the like. When DV is received, the DV data received from the external β is transferred to the ring buffer 103.
第 5図は、本発明の実施の形態 1によるディスク制御装置のデータ記録時のリン グバッファを説明するための図である。 .  FIG. 5 is a diagram for explaining a ring buffer at the time of data recording of the disk control device according to the first embodiment of the present invention. .
第 5図に示すように、受信した D Vデータは、 I S O取込みポインタで示される バッファ位置に格納される。 D Vデータを格納後、 I S〇取込みポインタは次のバ ッファを示すようにインクリメントされる。 その時、 バッファを超える場合には、 I SO取込みポインタを最上位の位置に戻す。 DVデータは、 28. 8Mb p sの 一定速度で途切れる事無く送られてくる。 約 30フレーム Z秒なので、 1フレーム を転送するのに約 33ms要する。 As shown in FIG. 5, the received DV data is stored in the buffer position indicated by the ISO capture pointer. After storing the DV data, the IS Is incremented to indicate the buffer. At that time, if the buffer is exceeded, the ISO capture pointer is returned to the highest position. DV data is sent without interruption at a constant rate of 28.8 Mbps. Since it is about 30 frames Z seconds, it takes about 33ms to transfer one frame.
映像音声データ管理手段 106は、第 5図で示しているようにリングバッファ 1 03における I SO取込みポインタと I DE取出しポインタが同一のバッファを 示していない場合、ディスク装置 105に保存していない DVデータがあると判断 し、領域管理情報管理手段 107に次記録 LF A取出し要求を発行して、 次記録 L FA情報を得、データ記録再生手段 104に記録したい論 aフレームァドレスと取 出しポインタを渡し、 DVデータ格納要求を発行する。  As shown in FIG. 5, if the ISO capture pointer and the IDE capture pointer in the ring buffer 103 do not indicate the same buffer as shown in FIG. Judges that there is data, issues the next record LFA fetch request to the area management information management means 107, obtains the next record LFA information, and records the data to be recorded in the data recording / playback means 104.a The frame address and the fetch pointer Handover and issue a DV data storage request.
データ記録再生手段 104は、記録したい論理フレームァドレスを領域管理情報 管理手段 107に送り、 LFA' PF A変換要求を発行して得られた物理フレーム ァドレスが示すディスク装置 105のデータ領域に、 リングバッファ 103の I D E取出しポインタが示すバッファ上の D Vデータを所定の手順で記録する。その時、 IDE取出しポインタは次のバッファを示すようにインクリメントされる力 パッ ファを超える場合には、 I DE取出しポインタを最上位のバッファを示す位置に戻 す。 この時、 DVデータは、 外部インターフェース手段 102より一定間隔 （DV データの場合は約 33ms毎） で送られてくるが、 データ記録再生手段 104がデ イスク装置 105に DVデータを記録するのは、ディスク ;¾置 105がデータを受 け取れる状態の時で、 1フレーム分のデータをディスク装置 105に書き込むには、 HDDなら約 8ms要する。通常状態としてはディスク装置 105への書き込みが 外部インターフェース手段 102から送られてくる DVデータの転送速度よりか なり早いので、 リングバッファの DVデータでディスク装置 105に転送されてい ないデータは 0か 1であり、 DVデータの記録が欠落するのは、 リングバッファの サイズが一杯になるまでディスク装置 105への転送が遅れた場合である。 The data recording / reproducing means 104 sends the logical frame address to be recorded to the area management information managing means 107, and issues a ring buffer to the data area of the disk device 105 indicated by the physical frame address obtained by issuing the LFA 'PFA conversion request. The DV data on the buffer indicated by the IDE extraction pointer 103 is recorded according to a predetermined procedure. Then, if the IDE fetch pointer exceeds the force buffer that is incremented to point to the next buffer, move the IDE fetch pointer back to the position pointing to the top buffer. At this time, the DV data is sent from the external interface means 102 at regular intervals (about 33 ms in the case of DV data), but the data recording / reproducing means 104 records the DV data on the disk device 105 because Disk : When the device 105 is ready to receive data, writing one frame of data to the disk device 105 takes about 8 ms for an HDD. In the normal state, writing to the disk device 105 is considerably faster than the transfer speed of the DV data sent from the external interface means 102, so that the data which is not transferred to the disk device 105 in the ring buffer DV data is 0 or 1. The recording of DV data is lost when the transfer to the disk device 105 is delayed until the size of the ring buffer becomes full.
例えば、 リングバッファに 11フレーム分の容量があるなら、 10X 33msで 約 0. 3秒の余裕が発生し、 この時間でデイスク装置 105で発生するシーク時間 や書き込みエラー時のリ トライ処理時間を吸収できる。 かしながら、 10フレー ム分の全てにランダムアクセスが発生したりリ トライ処理^幾らか発生した場合、 D Vデータをディスク装置に保存できない事態が発生しうる。 For example, if the ring buffer has a capacity of 11 frames, a margin of about 0.3 seconds occurs at 10X 33ms, and this time absorbs the seek time generated by the disk device 105 and the retry processing time at the time of a write error. it can. However, if random access occurs in all 10 frames or if retry processing occurs somewhat, A situation may occur in which DV data cannot be stored in the disk device.
領域管理情報管理手段 1 0 7が、次記録 L F A取出し要求を受け取った時の詳細 な動作を第 7図を用いて説明する。  The detailed operation when the area management information management means 107 receives the next recording LFA fetch request will be described with reference to FIG.
第 7図は、本実施の形態 1によるディスク制御方法の記録時における次記録 L F A算出方法を説明するためのフロー図である。  FIG. 7 is a flowchart for explaining a next recording LFA calculation method at the time of recording by the disk control method according to the first embodiment.
ステップ S 1で記録開始論理フレームァドレスが記録^能総フレーム数より大 きい場合、 フル記録状態と判断して映像音声データ管理手段 1 0 6に記録の終端を 通知する。記録開始論理フレームァドレスが記録可能総フレーム数に達していなか つた場合はステップ S 2に移行する。  If the recording start logical frame address is larger than the total number of recording capability frames in step S1, it is determined that the recording is in the full recording state, and the end of recording is notified to the video / audio data management means 106. If the recording start logical frame address has not reached the total number of recordable frames, the process proceeds to step S2.
ステップ S 2で記録開始論理フレームァドレスが最終記録論理フレームァドレ スより大きかつた場合は、追加記録モードとして未記録領域に D Vデータを記録し て記録領域に移動させ、 それ以外は、重ね書き記録モードとして記録領域にある D Vデータに重ね書き記録する。  If the recording start logical frame address is larger than the final recording logical frame address in step S2, DV data is recorded in an unrecorded area and moved to the recording area as an additional recording mode. To overwrite the DV data in the recording area.
重ね書きモードでは、 ステップ S 1 0で記録開始論理ブレームァドレスを映像音 声データ管理手段 1 0 6に返し、ステップ S 1 1で記録開始論理フレームアドレス を 1増やす。 '  In the overwriting mode, the recording start logical frame address is returned to the video / audio data management means 106 in step S10, and the recording start logical frame address is incremented by 1 in step S11. '
ステップ S 3では、追加記録モードで未記録領域管理情報にある領域 1の開始物 理フレームァドレスと終了物理フレームァドレスが一致している時は、残り未記録 フレームが 1なので、ステップ S 4で未記録領域 1を削除して以降の領域情報を前 に一つずつ詰め、 そしてステップ S 6に進む。一致しない場合は残り未記録フレー ムが 2以上なので、 ステップ S 5で未記録領域管理情報にある領域 1の開始物理フ レームァドレスを 1増やす。 この操作で、未記録領域から 1フレーム分のデータ領 域を確保した事になる。  In step S3, when the start physical frame address and the end physical frame address of the area 1 in the unrecorded area management information match in the additional recording mode, the remaining unrecorded frame is 1, so the unrecorded frame is not recorded in step S4. The recording area 1 is deleted, and the subsequent area information is stuffed one by one, and the process proceeds to step S6. If they do not match, the number of remaining unrecorded frames is 2 or more. In step S5, the start physical frame address of area 1 in the unrecorded area management information is incremented by one. This operation secures a data area for one frame from the unrecorded area.
ステップ S 6で記録領域管理情報にある領域情報で有効な最後の領域 nの終了 物理フレームアドレスと、ステップ S 4もしくはステップ S 5で未記録領域から削 除した後の物理フレームァドレスとが連続していない場合は、記録領域に新規追加 するとしてステップ S 7を実行し、そうでなければステップ S 9を実行して記録す る 1フレーム分の領域を記録領域に確保する。  The end physical frame address of the last area n valid in the area information in the recording area management information in step S6 and the physical frame address deleted from the unrecorded area in step S4 or step S5 are continuous. If not, step S7 is executed to newly add to the recording area, and if not, step S9 is executed to secure an area for one frame to be recorded in the recording area.
' S 7では、新しい記録領域を記録領域管理情報の領域 n + 1に追加する 力 この時開始 ·終了物理フレームァドレスとして新規に獲得した物理フレームァ ドレスを格內する。 '' In S7, add a new recording area to the recording area management information area n + 1 At this time, the newly acquired physical frame address is stored as the start / end physical frame address.
ステップ S 8では、 最終記録論理フレームアドレスを 1増やす。  In step S8, the last recording logical frame address is incremented by one.
ステップ S 9では、記録領域管理情報にある領域情報で有効な最後の領域 nの終 了物理フレームアドレスを 1増やしてステップ S 8へ進む。  In step S9, the ending physical frame address of the last area n valid in the area information in the recording area management information is incremented by 1, and the process proceeds to step S8.
ステップ S 10で記録開始論理フレームァドレスを映像音声データ管理手段 1 06に返し、 ステップ S I 1で記録開始論理フレームアドレスを 1増やす。 - 次に、 再生処理動作について説明する。  In step S10, the recording start logical frame address is returned to the video / audio data management means 106, and in step SI1, the recording start logical frame address is incremented by one. -Next, the reproduction processing operation will be described.
外部インターフェース手段 102は、 I E EE 1394パス 101から再生開始 要求を受け取った時、 映像音声データ管理手段 106に再生開始要求を発行し、 リ ングバッファ 103にデータ記録再生手段 104から転送された DVデータを I EEE1394パス 101を介して外部機器に順次送信する。  When the external interface means 102 receives a reproduction start request from the IE EE 1394 path 101, the external interface means 102 issues a reproduction start request to the video / audio data management means 106, and transmits the DV data transferred from the data recording / reproduction means 104 to the ring buffer 103. Are sequentially transmitted to the external device via the IEEE1394 path 101.
第 6図は、本発明の実施の形態 1によ δディスク制御装 gのデータ再生時のリン グバッファを説明するための図である。  FIG. 6 is a diagram for explaining a ring buffer during data reproduction of the δ disk control device g according to the first embodiment of the present invention.
転送する DVデータは、第 6図に示すようにリングバッファ 103において I S O取出しポインタが IDE取込みポインタと異なるバッファを示していた場合、外 部に送信していない DVデータがバッファ内にあると判断して、 I SO取出しボイ ンタが示すバッファの DVデータを転送し、 同じ位置を示している時は、 ディスク 装置 105からの DVデータ取出しが遅延していると判断して、エラー処 Sとして 一つ前に転送した： DVデータを再送する。 ただし、 再生開始時点では、 2つのボイ ンタが同一なのでリングバッファに D Vデータが格納されてから外部機器に送信 を開始する。外部インターフェース手段 102が DVデータを I EEE 1394パ ス 101に送信したら、 リングバッファ 103の I SO取出しポインタは次のバッ ファを示すようにインクリメントされる。 その時、 バッファを超える場合には、 I S O取出しボインタを最上位の位置に戻す。  For the DV data to be transferred, if the ISO fetch pointer indicates a different buffer from the IDE fetch pointer in the ring buffer 103 as shown in Fig. 6, it is determined that the DV data not transmitted to the outside is in the buffer. When the DV data in the buffer indicated by the ISO extraction pointer is transferred, and the data points to the same position, it is determined that the DV data extraction from the disk device 105 is delayed and one error processing S is performed. Previously transferred: Resend DV data. However, at the start of playback, since the two pointers are the same, transmission to the external device starts after the DV data is stored in the ring buffer. When the external interface means 102 transmits the DV data to the IEEE 1394 path 101, the ISO fetch pointer of the ring buffer 103 is incremented to indicate the next buffer. At that time, if it exceeds the buffer, return the ISO fetch pointer to the highest position.
映像音声データ管理手段 106は、第 6図で示しているようにリングバッファ 1 03における I SO取出しボインタと I DE取込みポインタが同一のバッファを 示していない場合、 もしくは再生開始要求を受けた直後は、 リングバッファ 103 に空バッファがあると判断し、領域管理情報管理手段 107に次再生 LF A取出し 要求を発行して、 次再生 LFA情報を得、 データ記録再生 段 104に再生したい 論理フレームアドレスと I DE取込みポインタを渡し、 DVデータ取出し要求を発 行する。 それ以外は、 リングバッファ 103に DVデータの先読みが一杯に格納さ れていると判断し、 ディスク装置からの DVデータ取出しを行わない。 As shown in FIG. 6, the video / audio data management means 106 determines whether the ISO fetch pointer and the IDE fetch pointer in the ring buffer 103 do not indicate the same buffer, or immediately after receiving a playback start request. It is determined that there is an empty buffer in the ring buffer 103 and the area management information management means 107 retrieves the next playback LFA A request is issued to obtain the next playback LFA information, and a logical frame address and an IDE capture pointer to be played back are passed to the data recording and playback stage 104, and a DV data removal request is issued. Otherwise, it is determined that the read-ahead of the DV data is fully stored in the ring buffer 103, and the DV data is not extracted from the disk device.
DVデータ取出し要求を受けたデータ記録再生手段 104は、再生したい論理フ レームアドレスを領域管理情報管理手段 107に送り、 LFA' PFA変換要求を 発行して得られた物理フレームァドレスが示すディスク装置 105のデータ領域 から、 リングバッファ 103の I DE取込みポインタが示すバッファ上に DVデー タを所定の手順で読み出し格納する。 その時、 I DE取込みポインタは次のバッフ ァを示すようにインクリメントされる力、 バッファを超える場合には、 IDE取込 みポインタを最上位のバッファを示す位置に戻す。 この時、 DVデータは、 外部ィ ンターフェース手段 102より一定間隔（DVデータの場合は約 33ms毎） で読 み出されるが、データ記録再生手段 104がディスク装置 105から DVデータを 読み出すのは、 ディスク装置 1.05がデータを受け取れる状態の時で、 1フレーム 分のデータをディスク装置から読み出すのは、 HDDなら LB Aが連続していて先 読みキヤッシュが有効なら約 8 m s要し、キャッシュが無効ならシーク時間が加算 される。通常状態としてはディスク装置からの読み出しが外部インターフェース手 段 102から取出される DVデータの転送速度よりかなり速いので、 リングパッフ ァの DVデータで外部インターフェース手段 102に転送されていないデータは バッファに一杯先読みされており、 DVデータの再生が欠落するのは、 リングパッ ファの DVデータが空になるまでディスク装置 105からの読み出しが遅れた場 合である。  The data recording / reproducing means 104 which has received the DV data take-out request sends the logical frame address to be reproduced to the area management information managing means 107, and issues the LFA 'PFA conversion request to issue the disk device 105 indicated by the physical frame address obtained. The DV data is read out from the data area of the ring buffer 103 and stored in the buffer indicated by the IDE capture pointer of the ring buffer 103 in a predetermined procedure. At that time, the IDE capture pointer is incremented to point to the next buffer. If the buffer exceeds the buffer, the IDE capture pointer is returned to the position indicating the highest buffer. At this time, the DV data is read from the external interface means 102 at regular intervals (about 33 ms in the case of DV data), but the data recording / reproducing means 104 reads the DV data from the disk device 105 When the disk unit 1.05 is ready to receive data, reading one frame of data from the disk unit takes about 8 ms if the LBA is continuous and the read-ahead cache is valid for HDDs, and about 8 ms if the cache is invalid. Seek time is added. In the normal state, the reading from the disk device is much faster than the transfer rate of the DV data taken out from the external interface means 102, so the ring buffer DV data which has not been transferred to the external interface means 102 is fully read ahead in the buffer. The reproduction of the DV data is lost when reading from the disk device 105 is delayed until the DV data of the ring buffer becomes empty.
例えば、 リングバッファに 11フレーム分の容量があるなら、 10X 33msで 約 0. 3秒の余裕が発生し、 この時間でディスク装置 105で発生するシーク時間 や読み出しエラー時のリ トライ処理時間を吸収できる。 しかしながら、 10フレー ム分が全てにランダムアクセスが発生したりリ トライ処理が幾ら力発生した場合、 DVデータがディスク装置から読み出せない事態が発生しうる。  For example, if the ring buffer has a capacity of 11 frames, there is a margin of about 0.3 seconds at 10X 33ms, and this time absorbs the seek time generated by the disk unit 105 and the retry processing time at the time of read error. it can. However, if random access occurs to all of the 10 frames or if some retry processing occurs, DV data may not be read from the disk device.
領域管理情報管理手段 107は、次再生 LF A取出し要求を受け取ると、 第 4図 に示す再生開始論理フレームァドレスを次再生 LF A情報として映像音声デ タ 管理手段 1 0 6に返し、再生開始論理フレームァドレスを 1インクリメントするが、 もし最終記録論理フレームァドレスを超えた場合は、記録されている D Vデータが ないので映像音声データ管理手段に記録の終端を通知する。 Upon receiving the next playback LFA take-out request, the area management information management means 107 uses the playback start logical frame address shown in FIG. Return to the management means 106 and increment the playback start logical frame address by one. Notice.
次に、 部分削除コマンド処理動作について説明する。  Next, a partial deletion command processing operation will be described.
第 1図において、外部インタ—フェース手段 1 0 2が部分削除要求を受けた場合、 領域管理情報管理手段 1 0 7に部分削除要求を発行する。,領域管理情報管理手段 1 0 7は、部分削除された範囲にある記,域が未記録領域 なるように、記録領域 管理情報の領域 nの開始 ·終了物理フレームアドレスと未記録管理情報の領域 nの 開始 ·終了物理フレームァドレスを変更する。  In FIG. 1, when the external interface means 102 receives a partial deletion request, it issues a partial deletion request to the area management information management means 107. The area management information management means 107 sets the start and end of the recording area management information area n and the area of the unrecorded management information so that the recording area in the partially deleted area becomes an unrecorded area. n Start · End Change physical frame address.
この時、再生時にフレームドロップを引き起こすかもしれない小さい記録領域が 発生した場合、 小さい記録領域を論理的な前方記録領域の後、 もしくは論理的な後 方記録領域の前、 もしくは分割してその両方に移動させる事により、小さい記録領 域をなくして映像音声データが途絶える事なく再生できるようにする。本実施の形 態 1では、 小さい記録領域は連続 1 0フレーム未満と設定した。  At this time, if there is a small recording area that may cause frame drop during playback, the small recording area may be divided after the logical front recording area, or before the logical rear recording area, or both. The video and audio data can be reproduced without interruption by eliminating the small recording area. In the first embodiment, the small recording area is set to be less than 10 consecutive frames.
第 8図は、本実施の形態 1によるディスク制御装置の い記録領域を論理的な 前方記録領域の後に移動させて、 1 0フレーム未満の記録核域をなくす例を示す図 である。 ' ： ' 第 8図において、上部 3本の棒ダラフが記録領域を移動させる時の物理ィメージ であり、左下部の表が上記物理ィメージの記憶領域管理情報をフレームァドレス数 で示したものである。 そして、右下部の表が上記物理イメージの未記憶領域管理情 報をフレームアドレス数で示したものである。  FIG. 8 is a diagram showing an example in which the recording area without the disk control device according to the first embodiment is moved after the logical front recording area to eliminate the recording core area of less than 10 frames. ':' In Fig. 8, the upper three bars are the physical images when moving the recording area, and the lower left table shows the storage area management information of the physical images by the number of frame addresses. . The lower right table shows the non-storage area management information of the physical image by the number of frame addresses.
物理イメージで示すように、 工程 8 0 1で記録領域①の部分削除を行った後、 ェ 程 8 0 2で削除後残った小さい記録領域②を前方の記録領域①の終端に移動させ、 映像音声データが途絶えることなく連続的に再生できるようにする。  As shown in the physical image, after partially deleting the recording area で in step 801, the small recording area 後 remaining after the deletion in step 802 is moved to the end of the front recording area 、, To enable continuous reproduction of audio data without interruption.
第 9図は、本実施の形態 1によるディスク制御装置の小 い記録領域を論理的な 後方記録領域の前に移動させて、 1 0フレーム未満の記 駕域をなくす例を示す図 である。  FIG. 9 is a diagram showing an example in which the small recording area of the disk control device according to the first embodiment is moved to the front of the logical rear recording area to eliminate the recording area of less than 10 frames.
第 9図の領域移動方法においても、 第 8図における領域移動方法と同様に、 工程 9 0 1で記録領域②の部分削除を行った後、工程 9 0 2で削除後残った小さい記録 領域②を後方記^ s域である記録領域③の始端に移動させ、映像音声データが途絶 えることなく連続的に再生できるようにする。 In the area moving method of FIG. 9, as in the case of the area moving method of FIG. 8, after partially deleting the recording area 9 in step 901, the small recording remaining after deletion in step 902 The area (2) is moved to the beginning of the recording area (3), which is the backward recording area, so that the video and audio data can be reproduced continuously without interruption.
第 1 0図は、本実施の形態 1によるディスク制御装置の小さい記^ B域を分割し て論理的な前方記録領域の後と論理的な後方記録領域の前に移動させて、 1 0フレ ーム未満の記録領域をなくす例を示す図である。  FIG. 10 is a block diagram of the disk control device according to the first embodiment in which the small recording area B is divided and moved after the logical front recording area and before the logical rear recording area, and the 10 FIG. 4 is a diagram showing an example of eliminating a recording area smaller than a recording area.
第 1 0図においては、 工程 1 0 0 1で記録領域②の部分削除を行った後、 工程 1 0 0 2で削除後残った小さい記録領域②を 2つに分割して記録領域③及び記録領 域④の始端に移動させて、新たに記録領域④及ぴ記録領域⑤として映像音声データ が途絶えることなく連続的に再生できるようにする。  In FIG. 10, after partially deleting the recording area (1) in step 1001, the small recording area (2) remaining after the deletion in step 1002 is divided into two, and the recording area (3) and the recording area are recorded. Move to the beginning of area (2) so that video and audio data can be played continuously without interruption as a new recording area and (recording area).
また、再生時にフレームドロップを引き起こす可能性のある小さい記録領域が発 生した場合、別の方法として、 小さい記録領域の物理的な前方未記録領域に論理的 な前方記 域の終端部分を移動させる、 もしくは小さい記録領域の物理的な後方 未記録領域に論理的な後方記録領域の始端部分を移動させ！)事により、小さい記録 領域をなくして映像音声データが途絶える事なく再生できもようにする。  Also, if a small recording area that may cause frame drop during playback occurs, another method is to move the end of the logical front recording area to the physical front unrecorded area of the small recording area. Move the beginning of the logically backward recording area to the unrecorded area, or physically behind the small recording area! This eliminates the need for a small recording area so that video and audio data can be reproduced without interruption.
第 1 1図は、本実施の形態 1によるディスク制御装置の小さい記録領域の物理的 前方に論理的な前方領域の終端部分を移動させて、記録領域が最低でも 1 0フレー ム以上連続するようにする例を示す図である。  FIG. 11 shows that the end portion of the logical front area is moved physically ahead of the small recording area of the disk control device according to the first embodiment so that the recording area continues at least 10 frames or more. FIG.
第 1 1図においては、 工程 1 1 0 1で記録領域②の部分削除を行った後、 工程 1 1 0 2で記録領域①の終端部分の一部を削除後小さくなった記録領域②の始端部 分に移動させて、記録領域が 1 0フレーム以上連続するようにして映像音声データ が途絶える事なく連続的に再生できるようにしている。  In FIG. 11, after the partial deletion of the recording area で was performed in the step 1101, the beginning of the recording area た which became smaller after the part of the ending part of the recording area 削除 was deleted in the step 1102 The video and audio data can be reproduced continuously without interruption by moving the recording area to a recording area of 10 frames or more.
第 1 2図は、本実施の形態 1によるディスク制御装置の/].、さレ、記録領域の物理的 後方に論理的な後方記録領域の始端部分を移動させて、 領域が最低でも 1 0フ レーム以上連続するようにする例を示す図である。  FIG. 12 shows that the start of the logical rear recording area is moved to the rear of the disk control device according to the first embodiment physically at a position of at least 10 FIG. 9 is a diagram showing an example in which frames or more are continuous.
第 1 2図においては、 工程 1 2 0 1で記録領域②の部分削除を行った後、 工程 1 2 0 2で記録領域③の始端部分の一部を削除後小さくなった記録領域②の終端部 分に移動させて、記録領域が 1 0フレーム以上連続するようにして映像音声データ が途絶える事なく連続的に再生できるようにしている。  In Fig. 12, after the partial deletion of the recording area (1) was performed in step 1221, the end of the recording area (2), which became smaller after deleting part of the starting end of the recording area (3) in step 122, The video and audio data can be reproduced continuously without interruption by moving the recording area to a recording area of 10 frames or more.
また、再生時にフレームドロップを引き起こす可能性のある小さい記録領域が発 生した場合、別の方法として、小さい記録領域全体と論理的な前方記録領域の終端 部分から必要なフレーム分を大きな未記録領域に移動させる、 もしくは小さい記録 領域全体と論理的な後方記録領域の始端部分から必要なフレーム分を大きな未記 録領域に移動させる事により、小さい記録領域をなくして映像音声データが途絶え る事なく再生できるようにする。 In addition, a small recording area that may cause frame drop during playback may occur. If this occurs, another method is to move the necessary frames from the end of the entire small recording area and the logical front recording area to the large unrecorded area, or to move the entire small recording area and the logical rear recording area. By moving the necessary frames from the beginning to the large unrecorded area, the small recorded area is eliminated, so that the audio and video data can be reproduced without interruption.
第 1 3図は、本実施の形態 1によるディスク制御装置の小さい記録領域全体と論 理的な前方記録領域の終端部分から必要なフレーム分を大きな未記録領域に移動 させて、記録領域が最低でも 1 0フレーム以上連続するようにする例を示す図であ る。  FIG. 13 shows that the necessary recording frame is moved to the large unrecorded area by moving the entire small recording area of the disk control device according to the first embodiment and the end of the logical front recording area to the large unrecorded area. However, it is a diagram showing an example in which 10 or more frames are continuous.
第 1 3図においては、 工程 1 3 0 1で記録領域②の部分削除を行った後、 工程 1 In FIG. 13, after partially deleting the recording area で in step 1301,
3 0 2で記録領域①の終端部分の一部と、削除後小さくな'つた記録領域②を後方に 移動させて、記録領域が 1 0フレーム以上連続するようにして映像音声データが途 絶える事なく連続的に再生できるようにしている。 The part of the end part of the recording area ① and the smaller recording area 後 after deletion are moved backward in 302, and the video and audio data is interrupted so that the recording area is continuous for 10 frames or more. It can be played continuously without any music.
第 1 4図は、本実施の形態 1によるディスク制御装置の小さい記,域全体と論 理的な後方記録領域の始端部分から必要なフレーム分を大きな未記録領域に移動 させて、記録領域が最低でも 1 0フレーム以上連続するようにする例を示す図であ る。  FIG. 14 shows a case where the necessary recording area is moved from the beginning of the logical recording area and the rear end of the logical rear recording area to the large unrecorded area of the disk control device according to the first embodiment, so that the recording area is reduced. FIG. 9 is a diagram showing an example in which at least 10 frames are continuous.
第 1 4図においては、 工程 1 4 0 1で記録領域②の部分削除を行った後、 工程 1 In FIG. 14, after the partial deletion of the recording area で was performed in step 1401,
4 0 2で記録領域③の始端部分の一部と、削除後小さくなった記録領域②を記録領 域④の後方に移動させて、記録領域が 1 0フレーム以上連 するようにして映像音 声データが途絶える事なく連続的に再生できるようにしている。 In 402, a part of the start end of the recording area ③ and the recording area ② that has become smaller after deletion are moved to the rear of the recording area 、, so that the recording area is continuous for 10 frames or more. Data can be played continuously without interruption.
また記^ g域の部分削除を行った後、記録時にフレームドロップを引き起こす可 能性のある小さい未記録領域が発生した場合、該当する未記録領域に、 物理的な前 方記録領域に対する論理的な後方記録領域の先頭部分から必要なフレーム分を移 動させる、 もしくは該当未記録領域に、物理的な後方記録領域に対する論理的な前 方記録領域の終端部分から必要なフレーム分を移動させて小さい未記録領域をな くし、 記録する時に映像音声データが欠落しないようにする。  Also, if a small unrecorded area that may cause a frame drop during recording occurs after partial deletion of the recording area, the relevant unrecorded area is logically associated with the physical front recorded area. The required frame is moved from the beginning of the proper rear recording area, or the required frame is moved from the end of the logical front recording area to the physical rear recording area to the corresponding unrecorded area. Eliminate small unrecorded areas so that video and audio data are not lost when recording.
本実施の形態 1では、小さい未記録領域は連続 1 0フレーム未満と設定した。 た だし、一番最初の未記録領域は 1 0フレーム未満でも記録の開始部分なので記録時 に音声データの欠落は発生しない。 In the first embodiment, the small unrecorded area is set to be less than 10 consecutive frames. However, the first unrecorded area is the start of recording even if it is less than 10 frames. No loss of audio data occurs.
第 1 5図は、本実施の形態 1によるディスク制御装置の小さい未記録領域に、 物 理的な前方記録領域に対する論理的な後方記録領域の先頭部分から必要なフレー ム分を移動させて、 1 0フレーム未満の未記^ R域をなくす例を示す図である。 第 1 5図においては、 工程 1 5 0 1で記録領域①の部分削除を行った後、 工程 1 5 0 2で記録領域②の始端部分の一部を記録領域①の部分削除を行った部分に移 動させて、 映像音声データが途絶える事なく連続的に再生できるようにしている。 第 1 6図は、本実施の形態 1によるディスク制御装置の小さ 、未記録領域に、 物 理的な後方記録領域に対する論理的な前方記録領域の終端部分から必要なフレー ム分を移動させて、 1 0フレーム未満の未記録領域をなくす例を示す図である。 第 1 6図においては、 工程 1 6 0 1で記録領域①の部分削除を行った後、 工程 1 6 0 2で記録領域②の終端部分の一部を記録領域①の部分削除を行った部分に移 動させて、 映像音声データが途絶える事なく連続的に再生できるようにしている。 また、記録時にフレームドロップを引き起こす可能性のある小さい未記録領域が 発生した場合、別の方法として、 該当する未記録領域に対して物理的な前方記録領 域の終端部分を、論理的な後方記録領域の先頭部分に必要なフレーム分を移動させ る、 もしくは該当未記^ g域に対して物理的な後方記^頁域の先頭部分を、論理的 な前方記録領域の終端部分に必要なフレーム分を移動させて、小さい未記録領域を 1 0フレーム以上に拡張することで、記録する時に映像音声データが欠落しないよ うにする。  FIG. 15 shows a case where necessary frames are moved from the head of the logical rear recording area to the physical front recording area to the small unrecorded area of the disk control device according to the first embodiment, FIG. 9 is a diagram showing an example of eliminating an unwritten ^ R area of less than 10 frames. In FIG. 15, after the partial deletion of the recording area で was performed in the step 1501, a part of the starting end of the recording area を was partially deleted in the recording area で in the step 1502. The video and audio data can be played continuously without interruption. FIG. 16 shows the disk controller according to the first embodiment in which the necessary frame is moved to the small, unrecorded area from the end of the logical front recording area with respect to the physical rear recording area. FIG. 10 is a diagram showing an example of eliminating an unrecorded area of less than 10 frames. In FIG. 16, after the partial deletion of the recording area で was performed in step 1601, a part of the end portion of the recording area を was partially deleted in the recording area で in step 1602. The video and audio data can be played continuously without interruption. If a small unrecorded area that may cause a frame drop during recording occurs, another method is to add the physical end of the front recorded area to the unrecorded area logically backward. Move the necessary frame to the beginning of the recording area, or move the beginning of the page area physically backward to the corresponding unmarked ^ g area to the end of the logical forward recording area. By moving the frame, the small unrecorded area is extended to 10 frames or more to prevent loss of video and audio data when recording.
第 1 7図は、本実施の形態 1によるディスク制御装置の小さい未記録領域に対し て物理的な前方記録領域の終端部分を、論理的な後方記録領域の先頭部分に必要な フレーム分を移動させて、 1 0フレーム未満の未記録領域をなくす例を示す図であ る。  FIG. 17 shows the movement of the end of the physical front recording area and the necessary frame to the beginning of the logical rear recording area for the small unrecorded area of the disk controller according to the first embodiment. FIG. 9 is a diagram showing an example of eliminating an unrecorded area of less than 10 frames.
第 1 7図においては、 工程 1 7 0 1で記録領域①の部分削除を行った後、 工程 1 7 0 2で記録領域①の終端部分の一部を記録領域③の始端部分に移動させて、映像 音声データが途絶える事なく連続的に再生できるようにしている。  In FIG. 17, in step 1701, after partially deleting the recording area で, in step 1702, a part of the ending part of the recording area 移動 is moved to the starting end of the recording area ③. In addition, video and audio data can be played continuously without interruption.
第 1 8図は、本実施の形態 1によるディスク制御装置の小さ 、未記^ ϋ域に対し て物理的な後方記録領域の先頭部分を、論理的な前方記録領域の終端部分に必要な フレーム分を移動させて、 1 0フレーム未満の未記録領域をなくす例を示す図であ る。 FIG. 18 is a block diagram of the disk control device according to the first embodiment, in which the head part of the physical rear recording area for the small, unrecorded area is required as the end part of the logical front recording area. FIG. 9 is a diagram showing an example in which an unrecorded area of less than 10 frames is eliminated by moving frames.
第 1 8図においては、 工程 1 8 0 1で記録領域①の部分削除を行った後、 工程 1 8 0 2で記録領域③の終端部分の一部を記録領域②の終端部分に移動させて、映像 音声データが途絶える事なく連続的に再生できるようにしている。  In FIG. 18, after partially deleting the recording area (1) in step 1801, part of the end of the recording area (3) is moved to the end of recording area (2) in step 1802. In addition, video and audio data can be played continuously without interruption.
また、記録時にフレームドロップを引き起こす可能性のある小さい未記録領域が 発生した場合、別の方法として、該当する未記録領域に対して物理的な前方記録領 域の終端部分を、大きい未記録領域に必要なフレーム分を移動させる、 もしくは該 当未記録領域に対して物理的な後方記録領域の先頭部分を、大きい未記録領域に必 要なフレーム分を移動させて、小さい未記録領域を 1 0フレーム以上に拡張するこ とで、 記録する時に映像音声データが欠落しないようにする。  If a small unrecorded area that may cause a frame drop at the time of recording occurs, as another method, the end portion of the physical front recording area with respect to the corresponding unrecorded area is replaced with a large unrecorded area. Or move the beginning of the physical rear recording area to the corresponding unrecorded area, and move the necessary frame to the larger unrecorded area to reduce the smaller unrecorded area by one. By extending it to 0 frames or more, video and audio data will not be lost during recording.
第 1 9図は、本実施の形態 1によるディスク制御装置の小さい未記録領域に対し て物理的な前方記録領域の終端部分を、大きい未記録領域に必要なフレーム分を移 動させて、 1 0フレーム未満の未記録領域をなくす例を示す図である。  FIG. 19 is a diagram showing an example in which the end portion of the physical front recording area is moved by a necessary frame to the large unrecorded area with respect to the small unrecorded area of the disk control device according to the first embodiment. FIG. 11 is a diagram illustrating an example of eliminating an unrecorded area of less than 0 frame.
第 1 9図においては、 工程 1 9 0 1で記録領域①の部分削除を行った後、 工程 1 9 0 2で分割された記録領域①の終端部分の一部を記録領域②の終端部分の未記 録領域に移動させて、映像音声データが途絶える事なく連続的に再生できるように している。  In FIG. 19, after partly deleting the recording area ① in the step 901, a part of the ending part of the recording area 分割 divided in the step 902 is added to the ending part of the recording area ②. By moving to an unrecorded area, video and audio data can be played continuously without interruption.
第 2 0図は、本実施の形態 1によるディスク制御装置の小さい未記録領域に対し て物理的な後方記録領域の先頭部分を、大きい未記録領域に必要なフレーム分を移 動させて、 1 0フレーム未満の未記録領域をなくす例を示す図である。  FIG. 20 shows that the head portion of the physical rear recording area is moved by a necessary frame to the large unrecorded area with respect to the small unrecorded area of the disk control device according to the first embodiment. FIG. 11 is a diagram illustrating an example of eliminating an unrecorded area of less than 0 frame.
第 2 0図においては、 工程 2 0 0 1で記録領域①の部分削除を行った後、 工程 2 0 0 2で分割された記録領域②の始端部分の一部を記録領域②の終端部分の未記 録領域に移動させて、映像音声データが途絶える事なく連棒的に再生できるように してレヽる。 '  In FIG. 20, after the partial deletion of the recording area で is performed in the step 201, a part of the starting end of the recording area 分割 divided in the step 200 is replaced with the end of the recording area ②. Move to an unrecorded area so that the video and audio data can be reproduced continuously without interruption. '
次に記録停止コマンド処理動作について説明する。  Next, a recording stop command processing operation will be described.
映像音声データ管理手段 1 0 6は記録停止要求を受けた時、領域管理情報保存要 求を領域管理情報管理手段 1 0 7に送り、領域管理情報管理手段 1 0 7は領域管理 情報をデータ記録再生手段 1 0 4に送り、データ記録再生手段 1 0 4は領域管理情 報をディスク装置 1 0 5に記録する。 ，： Upon receiving the recording stop request, the video / audio data management means 106 sends an area management information storage request to the area management information management means 107, and the area management information management means 107 records the area management information as data. The data is sent to the reproducing means 104, and the data recording / reproducing means 104 is supplied with the area management information. Information is recorded on the disk device 105. ,:
このように、本発明の実施の形態 1によるディスク制御装置およびディスク制御 方法によれば、 映像音声データの記録領域を論理的に管理する領域管理情報 （ファ ィルシステム） を導入し、 映像音声データの一部分を論理的に削除可能にし、 映像 音声データを再生する時は物理的に分断された領域に対しても論理的に連続した データのように映像音声データの欠落なく再生される事を保証し、削除された領域 に映像音声データを記録する場合は、物理的に分断された髌域に対しても映像音声 データの欠落なく記録されるようにしたので、映像音声データの部分削除機能を映 像音声データの領域管理で実現し、物理的に小さく分断された領域に対して再生 · 記録時にフレームドロップが発生しないディスク制御装眞およびディスク制御方 法を得ることができる。  As described above, according to the disk control device and the disk control method according to the first embodiment of the present invention, the area management information (file system) for logically managing the recording area of the video / audio data is introduced, and the video / audio data is recorded. It is possible to logically delete a part, and when reproducing video and audio data, it is guaranteed that even in physically separated areas, video and audio data can be reproduced without loss like logically continuous data. When recording audio and video data in the deleted area, the video and audio data is recorded without loss even in the physically separated area. Disk control device and disk control realized by area management of image and audio data, so that frame drop does not occur during playback and recording in physically small divided areas The law can be obtained.
なお、本実施の形態 1においてはディスク装置 1 0 5としてハードディスク装置 を用いた例について説明したが、 本発明はディスク装置であればよく、 例えば光磁 気ディスク装置や D VD— RAM等のランダム ·アクセス機能を有する装置を用い ても同様の効果を得られる。  In the first embodiment, an example in which a hard disk device is used as the disk device 105 has been described. However, the present invention may be any disk device, such as a magneto-optical disk device or a random access memory such as a DVD-RAM. · Similar effects can be obtained by using a device having an access function.
また、本実施の形態 1においては、 ディスク制御装置 1 0 0とディスク装置 1 0 5との接続手段を I D Eインターフェースで接続した構成で示したが、両装置間を 接続するインタフェースは、 S C S Iインターフェース等のディジタル信号を転送 可能なィンターフェース手段であればよく、上記実施の形態 1の構成に限定される ものではない。  Further, in the first embodiment, the connection means between the disk control device 100 and the disk device 105 is shown as a configuration connected by an IDE interface. However, the interface connecting the two devices is a SCSI interface or the like. Any interface means can be used as long as the interface means can transfer the digital signal of the present invention, and is not limited to the configuration of the first embodiment.
また、本実施の形態 1においては、 分断された小さい記攀領域もしくは未記録領 域を 1 0フレームとして説明したが、 その他の小さい数字 あってもよく、 上記実 施の形態 1の構成に限定されるものではない。  Further, in the first embodiment, the divided small climbing area or unrecorded area is described as 10 frames. However, other small numbers may be used, and the present invention is limited to the configuration of the first embodiment. It is not what is done.
(実施の形態 2 )  (Embodiment 2)
第 2 1図は、本発明の実施の形態 2によるディスク装置 1 2 0を説明するための プロック図である。  FIG. 21 is a block diagram for explaining a disk device 120 according to the second embodiment of the present invention.
本実施の形態 2のディスク装置 1 2 0は、上述の第 1図に示した実施の形態 1と 同様の機能、 構成を有するものには同一の番号を付与し、 説明を省略する。  In the disk device 120 of the second embodiment, those having functions and configurations similar to those of the first embodiment shown in FIG. 1 described above are given the same reference numerals, and description thereof is omitted.
本実施の形態 2のディスク装置 1 2 0は上記実施の形態 1のディスク制御装置 1 0 0の機能を有するものであり、実施の形態 1のディスク制御装置における各手 段がディスク装置内部に内蔵されている。 The disk device 120 of the second embodiment is the disk control device of the first embodiment. It has a function of 100, and each means in the disk control device of the first embodiment is built in the disk device.
第 2 1図に示すように、本実施の形態 2のディスク装置 1 2 0は記録媒体である 磁気ディスク 1 1 1と、 この磁気ディスク 1 1 1に対してディジタル信号の書き込 み及び読み出しを行う磁気へッド 1 1 2を内部に備えている。 また、上記実施の形 態 1において I D Eインターフェースを介してディスク装置に対するデータ記録 再生作業を行っていたデータ記録再生手段 1 0 4が、本実施の形態 2においては、 磁気へッド 1 1 2を介して磁気ディスク 1 1 1に対するディジタル信号の書き込 み及び読み出し制御を実行している。  As shown in FIG. 21, a disk device 120 according to the second embodiment has a magnetic disk 111 as a recording medium, and writes and reads digital signals to and from this magnetic disk 111. A magnetic head 1 1 2 is provided inside. Further, in the second embodiment, the data recording / reproducing means 104 performing data recording / reproducing work on the disk device via the IDE interface is replaced by the magnetic head 112 in the second embodiment. Control of writing and reading of digital signals to and from the magnetic disk 111 is executed.
第 2 1図において、 上記実施の形態 1と同一の符号を付与したプロックは、上記 実施の形態 1と同様の処理を行う。 従って、 I E E E 1 3 9 4パス 1 0 1 接続さ れた外部 βからの各種要求に対しては、本実施の形態 2のディスク装置における 各プロックは、 上記実施の形態 1と同様の動作を実行する。  In FIG. 21, blocks assigned the same reference numerals as those in the first embodiment perform the same processing as in the first embodiment. Therefore, in response to various requests from the external β connected to the IEEE 1394 path 101, each block in the disk device of the second embodiment executes the same operation as that of the first embodiment. I do.
また、 本実施の形態 2のディスク装置 1 2 0においては、 上記実施の形態 1にお けるディスク装置 1 0 5の有する機能を電気/電子回路内に実装することが可能 である。 この結果実施の形態 1のようにディスク制御装置 1 0 0とディスク装置 1 0 5を別体で使用する場合と比較して、映像音声データを記録再生するディスク装 置として低コスト化及び小型化を図る事が可能である。  Further, in the disk device 120 according to the second embodiment, the functions of the disk device 105 according to the first embodiment can be implemented in an electric / electronic circuit. As a result, compared to the case where the disk control device 100 and the disk device 105 are used separately as in Embodiment 1, the cost and size of the disk device for recording and reproducing video and audio data are reduced. It is possible to aim at.
なお、本実施の形態 2においては、 記憶媒体として磁気ディスクに対して映像音 声信号の書き込み処理を行う構成で説明したが、記録媒体として光磁気ディスクや D VD - R AM等のランダム ·ァクセス機能を有する記憶媒体を用いても同様の効 果を得られる。  In the second embodiment, a configuration has been described in which video and audio signals are written to a magnetic disk as a storage medium, but a random access such as a magneto-optical disk or DV-RAM is used as a storage medium. The same effect can be obtained by using a storage medium having a function.
また、 上記の実施の形態におけるディスク制御装置及びディスク装置は、 - I E E E l 3 9 4パスを介して外部機器と接続した構成で説明したが、両装置を外部機器 と接続するパスは、 映像音声信号の送受信可能なパスであればよく、上記の実施の 形態の構成に限定されるものではない。 産業上の利用可能性  Also, the disk control device and the disk device in the above embodiment have been described as having a configuration in which the external device is connected via the IEEE1394 path. The path may be any path capable of transmitting and receiving signals, and is not limited to the configuration of the above embodiment. Industrial applicability
以上のように、本発明に係るディスク制御装置、 ディスク制御方法及ぴディス ク装置は、映像音声データをフレーム落ちが発生しないように記録再生するデータ 処理装置に適している。 As described above, the disk control apparatus, the disk control method, and the disk The recording device is suitable for a data processing device that records and reproduces video and audio data so that frames are not dropped.

Claims

請求 の範囲 The scope of the claims
1 . 外部機器との信号を送受信するインターフェース手段と、 1. Interface means for transmitting and receiving signals to and from external devices;
上記ィンターフェース手段が記録開始要求を受け取った時、外部機器から受信し た映像音声データを、 また再生開始要求を受け取った時、 外部ディスク装置からの 映像音声データを格納するための格納手段と、  Storage means for storing the video / audio data received from the external device when the interface means receives the recording start request, and the video / audio data from the external disk device when receiving the reproduction start request; ,
上記格納手段により格納されている映像音声データを記録し、また外部ディスク 装置からの映像音声データを再生するデータ記録再生手段と、  Data recording / reproducing means for recording the video / audio data stored by the storage means, and reproducing the video / audio data from the external disk device;
上記データ記録再生手段に映像音声データの記録要求または取り出し要求を発 行する映像音声データ管理手段と、  Video / audio data management means for issuing a video / audio data recording or retrieval request to the data recording / reproducing means;
上記データ記録再生手段と上記映像音声データ管理手段とから送られてくる映 像音声データの領域管理情報を管理する領域管理情報管理手段とを備え、  An area management information management means for managing area management information of video / audio data sent from the data recording / reproduction means and the video / audio data management means;
上記領域管理情報管理手段は、連続する映像音声データわ記録領域の一部分が削 除され、記録領域が物理的に小さく分断されて不連続になった場合、小さくなつた 記録領域を移動させる、また連続する映像音声データの記録領域の一部分が削除さ れ、 物理的に小さく分断された未記録領域が発生した場合、 上記未記録領域を移動 させるものである、  The area management information managing means moves the reduced recording area when a part of the continuous audio / video data recording area is deleted and the recording area is physically divided into small pieces and becomes discontinuous. When a part of the recording area of the continuous video / audio data is deleted and an unrecorded area that is physically small and divided occurs, the unrecorded area is moved.
ことを特徴とする、 ディスク制御装置。  A disk control device, characterized in that:
2 . 請求の範囲第 1項に記載のディスク制御装置において、  2. The disk controller according to claim 1,
上記領域管理情報管連手段は、上記記録領域または上記未記録領域を物理的なァ， ドレスと論理的なアドレスとで管理するものである、 - ことを特徴とする、 ディスク制御装置。  The above-mentioned area management information connection means manages the above-mentioned recording area or the above-mentioned unrecorded area with a physical address, a logical address and a logical address.
3 . 請求の範囲第 1項に記載のディスク制御装置において、  3. The disk controller according to claim 1,
上記領域管理情報管理手段は、個々の上記記録領域または上記未記録領域をそれ ぞれ 1から Nまで番号付けをして管理するものである、  The area management information management means manages each of the recorded areas or the unrecorded areas by numbering 1 to N, respectively.
ことを特徴とする、 ディスク制御装置。  A disk control device, characterized in that:
4 . 請求の範囲第 1項に記載のディスク制御装置において、  4. The disk controller according to claim 1,
上記領域管理情報管理手段は、 領域管理情報テープノレを持つものである、 ことを特徴とする、 ディスク制御装置。 The disk control device, wherein the area management information management means has an area management information tape tape.
5 . 請求の範囲第 4項に記載のディスク制御装置において、 5. The disk controller according to claim 4, wherein:
上記領域管理情報テーブルは、記録再生領域情報テーブルと、記録領域管理情報 テーブルと、 未記録領域管理情報テーブルとから構成されるものである、 ' ことを特徴とする、 ディスク制御装置。  The disk control device, wherein the area management information table includes a recording / reproduction area information table, a recording area management information table, and an unrecorded area management information table.
6 . 請求の範囲第 1項に記載のディスク制御装置において、 6. The disk controller according to claim 1,
連続する映像音声データの記録領域の一部分が削除され、記録領域が物理的に小 さく分断されて不連続になった場合、  If a part of the recording area of continuous video and audio data is deleted and the recording area is physically divided into small pieces and becomes discontinuous,
上記領域管理情報管理手段は、  The area management information management means includes:
小さく分断された記 域を前方記録領域の後、 もしくは後方記^ S域の前、 も しくは分割してその両方に移動させるものである、  A small divided area is moved after the front recording area, before the rear recording area ^ before the S area, or divided and moved to both.
ことを特徴とする、 ディスク制御装置。  A disk control device, characterized in that:
7 . 請求の範囲第 1項に記載のディスク制御装置において、  7. The disk controller according to claim 1,
連続する映像音声データの記録領域の一部分が削除され、記録領域が物理的に小 さく分断されて不連続になった場合、  If a part of the recording area of continuous video and audio data is deleted and the recording area is physically divided into small pieces and becomes discontinuous,
上記領域管理情報管理手段は、  The area management information management means includes:
小さく分断された記録領域の前方未記録領域に前方記録領域の終端部分を移動 させる、 もしくは小さくなつた記録領域の後方未記録領域に後方記録領域の始端部 分に移動させるものである、  The end of the front recording area is moved to the front unrecorded area of the small divided recording area, or the beginning of the rear recording area is moved to the rear unrecorded area of the reduced recording area.
ことを特徴とする、 ディスク制御装置。  A disk control device, characterized in that:
8 . 請求の範囲第 1項に記載のディスク制御装置において、 8. The disk controller according to claim 1,
連続する映像音声データの記録領域の一部分が削除され、記録領域が物理的に小 さく分断されて不連続になった場合、  If a part of the recording area of continuous video and audio data is deleted and the recording area is physically divided into small pieces and becomes discontinuous,
上記領域管理情報管理手段は、  The area management information management means includes:
小さく分断された記録領域全体と前方記録領域の終端部分から必要なフレーム 分を大きな未記^!域に移動させる、 もしくは小さく分断された記辦貝域全体と後 方記録領域の始端部分から必要なフレーム分を大きな未記録領域に移動させるも のである、  Move the required frame from the end of the entire recording area and the end of the front recording area to the large unrecorded ^! Area, or start from the beginning of the entire recording area and the rear recording area Is to move a large number of frames to a large unrecorded area.
ことを特徴とする、 ディスク制御装置。  A disk control device, characterized in that:
9 . 請求の範囲第 1項に記載のディスク装置において、 連続する映像音声データの記録領域の一部分が削除され、物理的に小さく分断さ れた未記録領域が発生した場合、 9. In the disk device according to claim 1, If a part of the recording area of continuous video and audio data is deleted and an unrecorded area that is physically small and divided occurs,
上記領域管理情報管理手段は、  The area management information management means includes:
小さく分断された未記録領域に、前方記録領域に対する後方記録領域の先頭部分 力 ら必要なフレーム分を移動させる、 もしくは小さく分断された未記録領域に、 後 方記録領域に対する前方記録領域の終端部分から必要なフレーム分を移動させる ものである、  Move the required frame from the head of the rear recording area to the front recording area to the small recording area, or move the end of the front recording area to the rear recording area to the small recording area. To move the required frame from
ことを特徴とする、 ディスク制御装置。 " 1 0 . 請求の範囲第 1項に記載のディスク制御装置において、  A disk control device, characterized in that: 10. The disk controller according to claim 1, wherein:
連続する映像音声データの記録領域の一部分が削除され、物理的に小さく分断さ れた未記録領域が発生した場合、  If a part of the recording area of continuous video and audio data is deleted and an unrecorded area that is physically small and divided occurs,
上記領域管理情報管理手段は、  The area management information management means includes:
小さく分断された未記録領域に対して前方記録領域の終端部分を、後方記 域 の先頭部分に必要なフレーム分を移動させる、 もしくは小さく分断された未記録領 域に対して後方記録領域の先頭部分を、前方記録領域の終端部分に必要なフレーム 分を移動させるものである、  Move the end of the front recording area to the undivided small area and move the required frame to the beginning of the rear area, or move the beginning of the rear recording area to the undivided small area. The part is moved by the necessary frame to the end part of the front recording area.
ことを特徴とする、 ディスク制御装置。  A disk control device, characterized in that:
1 1 . 請求の範囲第 1項に記載のディスク制御装置において、 11. The disk controller according to claim 1, wherein:
連続する映像音声データの記録領域の一部分が削除され、物理的に小さく分断さ れた未記録領域が発生した場合、  If a part of the recording area of continuous video and audio data is deleted and an unrecorded area that is physically small and divided occurs,
上記領域管理情報管理手段は、  The area management information management means includes:
小さく分断された未記録領域に対して前方記録領域の終端部分を、大きい未記録 領域に必要なフレーム分を移動させる、 もしくは小さく分断された未記録領域に対 して後方記録領域の先頭部分を、大きい未記録領域に必要なフレーム分を移動させ るものである、  The end portion of the front recording area is moved to the smaller unrecorded area, and the necessary frame is moved to the larger unrecorded area, or the leading part of the rear recording area is moved to the smaller unrecorded area. Move the necessary frames to a large unrecorded area.
ことを特徴とする、 ディスク制御装置。  A disk control device, characterized in that:
1 2 . 請求の範囲第 1項乃至請求の範囲第 1 1項のいずれか一項に記載のディス ク制御装置において、 12. The disk control device according to any one of claims 1 to 11,
上記デイスクは磁気ディスクである、 ことを特徴とする、 ディスク制御装置。 - 1 3 . 請求の範囲第 1項乃至請求の範囲第 1 1項のいずれか一項に記載のディス ク制御装置において、 The above disk is a magnetic disk, A disk control device, characterized in that: -13. In the disk control device according to any one of claims 1 to 11,
上記デイスクは光磁気デイスクである、  The above disk is a magneto-optical disk,
ことを特徴とする、 ディスク制御装置。  A disk control device, characterized in that:
1 4 . 外部機器との信号を送受信するインターフェース処理と、  1 4. Interface processing for transmitting and receiving signals to and from external devices,
上記ィンターフェース手段が記録開始要求を受け取った時、外部機器から受信し た映像音声データを、 また再生開始要求を受け取った時、外部ディスク装置からの 映像音声デ—タを格納するための格納処理と、  When the interface unit receives a recording start request, it stores video / audio data received from an external device, and when it receives a reproduction start request, stores video / audio data from an external disk device. Processing,
上記格納手段により格納されている映像音声データを記録し、また外部ディスク The video / audio data stored by the storage means is recorded, and an external disk
' 装置からの映像音声データを再生するデータ記録再生処理と、 '' A data recording / reproducing process for reproducing video and audio data from
上記データ記録再生手段に映像音声データの格納要求または取り出し要求を発 行する映像音声データ管理処理と、  A video and audio data management process for issuing a storage or retrieval request of the video and audio data to the data recording / reproducing means;
上記データ記録再生処理と上記映像音声データ管理処理とによって送られてく る映像音声データの領域管理情報を管理する領域管理情報管理処理とを含み、 上記領域管理情報管理処理では、連続する映像音声データの記録領域の一部分が 削除され、記録領域が物理的に小さく分断されて不連続になった場合、 小さくなつ た記録領域を移動させる、また連続する映像音声データの記録領域の一部分が削除 され、物理的に小さく分断された未記,域が発生した場合、上記未記録領域を移 動させる、  The area management information management processing for managing area management information of the video / audio data transmitted by the data recording / reproduction processing and the video / audio data management processing includes: If a part of the recording area is deleted, and the recording area is physically divided into small pieces and becomes discontinuous, the reduced recording area is moved, and a part of the recording area of the continuous video and audio data is deleted. If there is an unrecorded area that is physically small and divided, move the unrecorded area,
ことを特徴とする、 ディスク制御方法。  A disk control method, characterized in that:
1 5 . 請求の範囲第 1 4項に記載のディスク制御方法において、  15. The disk control method according to claim 14, wherein:
上記領域管理情報管理処理では、上記記録領域または上記未記録領域を物理的な アドレスと論理的なアドレスとで管理する、 ： - ことを特徴とする、 ディスク制御方法。  In the above area management information management processing, the recording area or the unrecorded area is managed by a physical address and a logical address.
1 6 . 請求の範囲第 1 4項に記載のディスク制御方法において、  16. The disk control method according to claim 14, wherein:
上記領域管理情報管理処理では、個々の上記記録領域または上記未記録領域をそ れぞれ 1から Nまで番号付けをして管理する、  In the area management information management processing, each of the recorded areas or the unrecorded areas is managed by numbering from 1 to N, respectively.
ことを特徴とする、 ディスク制御方法。 A disk control method, characterized in that:
1 7 . 請求の範囲第 1 4項に記載のディスク制御方法において、 上記領域管理情報管理処理では、 領域管理情報テーブルを備えた、 17. The disk control method according to claim 14, wherein the area management information management processing includes an area management information table.
ことを特徴とする、 ディスク制御方法。  A disk control method, characterized in that:
1 8 . 請求の範囲第 1 7項に記載のディスク制御方法において、  18. The disk control method according to claim 17, wherein
上記領域管理情報管理処理では、 上記領域管理情報テーブルは、 記録再生領域情 報テーブルと、記録領域管理情報テーブルと、未記録領域管理情報テーブルとから 構成される、  In the area management information management process, the area management information table includes a recording / reproduction area information table, a recording area management information table, and an unrecorded area management information table.
ことを特徴とする、 ディスク制御方法。  A disk control method, characterized in that:
1 9 . 請求の範囲第 1 4項に記載のディスク制御方法において、 19. The disk control method according to claim 14, wherein:
連続する映像音声データの記録領域の一部分が削除され、記録領域が物理的に小 さく分断されて不連続になった場合、 :： A portion of the recording area of the continuous video and audio data is deleted, when the recording area becomes discontinuous is physically small fence separated,::
上記領域管理情報管理処理では、  In the above area management information management processing,
小さく分断された記 TO域を前方記録領域の後、 もしくは後方記録領域の前、 も しくは分割してその両方に移動させる、  Move the small segmented TO area after the front recording area, before the rear recording area, or split and move both
ことを特徴とする、 ディスク制御方法。  A disk control method, characterized in that:
2 0. 請求の範囲第 1 4項に記載のディスク制御方法において、  20. In the disk control method according to claim 14,
連続する映像音声データの記録領域の一部分が削除され、記録領域が物理的に小 さく分断されて不連続になった場合、  If a part of the recording area of continuous video and audio data is deleted and the recording area is physically divided into small pieces and becomes discontinuous,
上記領域管理情報管理処理では、  In the above area management information management processing,
小さく分断された記録領域の前方未記録領域に前方記 領域の終端部分を移動 させる、 もしくは小さくなった記録領域の後方未記録領域に後方記録領域の始端部 分に移動させる、  Move the end of the front recording area to the unrecorded area in front of the small divided recording area, or move the beginning of the rear recording area to the unrecorded area behind the reduced recording area.
ことを特徴とする、 ディスク制御方法。  A disk control method, characterized in that:
2 1 . 請求の範囲第 1 4項に記載のディスク制御方法において、  21. In the disk control method according to claim 14,
連続する映像音声データの記録領域の一部分が削除され、記録領域が物理的に小 さく分断されて不連続になった場合、  If a part of the recording area of continuous video and audio data is deleted and the recording area is physically divided into small pieces and becomes discontinuous,
上記領域管理情報管理処理では、  In the above area management information management processing,
小さく分断された記録領域全体と前方記録領域の終端部分から必要なフレーム 分を大きな未記^ M域に移動させる、 もしくは小さく分断された記 域全体と後 方記録領域の始端部分から必要なフレーム分を大きな未記録領域に移動させる、 ことを特徴とする、 ディスク制御方法。 Move the necessary frames from the end of the entire small recording area and the end of the front recording area to the large unrecorded area ^ M, or move the entire small recording area and the rear A disk control method comprising: moving a necessary frame from a start end of a recording area to a large unrecorded area.
2 2 . 請求の範囲第 1 4項に記載のディスク制御方法において、 22. In the disk control method according to claim 14,
連続する映像音声データの記録領域の一部分が削除され、物理的に小さく分断さ れた未記録領域が発生した場合、  If a part of the recording area of continuous video and audio data is deleted and an unrecorded area that is physically small and divided occurs,
上記領域管理情報管理処理では、  In the above area management information management processing,
小さく分断された未記録領域に、前方記録領域に対する後方記録領域の先頭部分 から必要なフレーム分を移動させる、 もしくは小さく分断された未記録領域に、 後 方記録領域に対する前方記録領域の終端部分から必要なフレーム分を移動させる、 ことを特徴とする、 ディスク制御方法。  The necessary frame is moved from the beginning of the rear recording area to the front recording area to the small recording unrecorded area, or from the end of the front recording area to the rear recording area to the small recording unrecorded area. A disk control method characterized by moving a necessary frame.
2 3 . 請求の範囲第 1 4項に記載のディスク制御方法において、  23. In the disk control method according to claim 14,
連続する映像音声データの記録領域の一部分が削除され、物理的に小さく分断さ れた未記^ g域が発生した場合、  If a part of the recording area of continuous video and audio data is deleted and a physically small and undivided ^ g area occurs,
上記領域管理情報管理処理では、  In the above area management information management processing,
小さく分断された未記録領域に対して前方記録領域の終端部分を、後方記録領域 の先頭部分に必要なフレーム分を移動させる、 もしくは小さく分断された未記録領 域に対して後方記録領域の先頭部分を、前方記録領域の終端部分に必要なフレーム 分を移動させる、  The end of the front recording area is moved to the head of the rear recording area by moving the end of the front recording area to the undivided small recording area, or the beginning of the rear recording area is moved to the undivided small recording area Move the necessary frame to the end of the front recording area,
ことを特徴とする、 ディスク制御方法。  A disk control method, characterized in that:
2 4 . 請求の範囲第 1 4項に記載のディスク制御方法において、 24. In the disk control method according to claim 14,
連続する映像音声データの記録領域の一部分が削除され、物理的に小さく分断さ れた未記録領域が発生した場合、 .  If a part of the recording area of the continuous video and audio data is deleted and an unrecorded area that is physically small and divided occurs.
上記領域管理情報管理処理では、  In the above area management information management processing,
小さく分断された未記録領域に対して前方記録領域の終端部分を、大きい未記録 領域に必要なフレーム分を移動させる、 もしくは小さく分断された未記録領域に対 して後方記録領域の先頭部分を、大きい未記録領域に必要なフレーム分を移動させ る、  The end portion of the front recording area is moved to the smaller unrecorded area, and the necessary frame is moved to the larger unrecorded area, or the leading part of the rear recording area is moved to the smaller unrecorded area. Move necessary frames to a large unrecorded area,
ことを特徴とする、 ディスク制御方法。  A disk control method, characterized in that:
2 5 . 請求の範囲第 1 4項乃至請求の範囲第 2 4項のいずれか一項に記載のディ スク制御方法において、 25. The digital camera according to any one of claims 14 to 24. In the disk control method,
上記ディスクは磁気ディスクである、 '  The above disk is a magnetic disk, '
ことを特徴とする、 ディスク制御方法。  A disk control method, characterized in that:
2 6 . 請求の範囲第 1 4項乃至請求の範囲第 2 4項のいずれか一項に記載のディ スク制御方法において、 26. The disk control method according to any one of claims 14 to 24, wherein:
上記ディスクは光磁気ディスクである、  The disk is a magneto-optical disk,
ことを特徴とする、 ディスク制御方法。  A disk control method, characterized in that:
2 7 . 請求の範囲第 1項から請求の範囲第 1 3項のいずれか一項に記載のディス ク制御装置を備えた、 27. The disk control device according to any one of claims 1 to 13 comprising:
ことを特徴とする、 ディスク装置。  A disk device, characterized in that:
PCT/JP2001/003340 2000-04-19 2001-04-19 Disk control device, disk control method, and disk unit WO2001080240A1 (en)

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JPH05217288A (en) * 1992-02-03 1993-08-27 Sharp Corp Information recording and reproducing device
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JPH0696559A (en) * 1992-09-11 1994-04-08 Sony Corp Recording device
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