WO2014162581A1 - Disk device corresponding to hologram disk, and disk recording method - Google Patents

Disk device corresponding to hologram disk, and disk recording method Download PDF

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Publication number
WO2014162581A1
WO2014162581A1 PCT/JP2013/060423 JP2013060423W WO2014162581A1 WO 2014162581 A1 WO2014162581 A1 WO 2014162581A1 JP 2013060423 W JP2013060423 W JP 2013060423W WO 2014162581 A1 WO2014162581 A1 WO 2014162581A1
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WO
WIPO (PCT)
Prior art keywords
data
disk
area
recording
cure
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PCT/JP2013/060423
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French (fr)
Japanese (ja)
Inventor
石飛　竜哉
裕美 西浦
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日立コンシューマエレクトロニクス株式会社
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Priority to PCT/JP2013/060423 priority Critical patent/WO2014162581A1/en
Publication of WO2014162581A1 publication Critical patent/WO2014162581A1/en

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/04—Processes or apparatus for producing holograms
    • G03H1/18—Particular processing of hologram record carriers, e.g. for obtaining blazed holograms
    • G03H1/181—Pre-exposure processing, e.g. hypersensitisation
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0065—Recording, reproducing or erasing by using optical interference patterns, e.g. holograms
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/04—Processes or apparatus for producing holograms
    • G03H1/18—Particular processing of hologram record carriers, e.g. for obtaining blazed holograms
    • G03H2001/185—Applying a curing step

Definitions

  • the present invention relates to a disk device for recording data using holography, and a disk recording method applied to the disk apparatus.
  • Hologram discs that record data using holography require a curing process before recording the data, and also require a curing process after recording the data.
  • the former is called precure (or precure), and the latter is called postcure.
  • This curing process is achieved by irradiating the disk with a beam dedicated to the curing process.
  • Data can be recorded in the pre-cured hologram disc area. In the post-cured area, the recorded data is fixed, and thereafter, data cannot be recorded in the same area. .
  • the hologram disk has a pre-cure time-out in which data recording must be started within a predetermined time after the pre-curing process, and a post-curing process in which post-curing must be performed within a predetermined time after data recording.
  • a time restriction of cure timeout There is a time restriction of cure timeout.
  • the present invention provides a disk device and a disk recording method capable of recording data on a hologram disk efficiently and reliably in consideration of the characteristics of a hologram disk that is difficult to handle. The task is to do.
  • the above object can be achieved by controlling the scheduling for securing the recording area of the hologram disk according to the cure timing, for example.
  • data can be efficiently and reliably recorded on a hologram disc.
  • FIG. 1 An example of a system configuration for implementing the recording method according to the present embodiment is shown in FIG. The figure shows that the system is composed of the host device 1, the disk device 2, and the hologram disk 3. In this system, the host device 1 can record data on the hologram disc 3 via the disc device 2. In FIG. 1, it is described that the hologram disk 3 is outside the disk device 2, but this is described for convenience for the sake of later explanation, and actually the disk device 2. May be placed inside.
  • FIG. 2 shows a first example of a recording method sequence according to the present embodiment.
  • the sequence shown in FIG. 2 will be described.
  • the host device 1 Prior to requesting the disk device 2 to record data, the host device 1 notifies the disk device 2 of the amount of recording data and requests to secure an area for recording data.
  • the disk device 2 logically secures a data recording area having a size corresponding to the recording data amount designated by the host device in the hologram disk 3.
  • the disk device 2 After that, pre-cure is performed in the same area, and a data recording area is physically secured. (3) After securing the data recording area, the disk device 2 notifies the host device 1 of the address and size of the area. (4) When the data recording area is secured, the host device 1 requests data recording to the same area. (5) Upon receiving a data recording request from the host device 1, the disk device 2 records data in the secured data recording area. (6) When the disk device 2 records data in all the reserved data recording areas, the disk device 2 performs post-cure in the same area. As a result, the data recorded in the same area is fixed, and thereafter, data cannot be recorded in the same area. (7) Upon completion of the post-cure, the disk device 2 notifies the host device 1 that all requested data has been recorded. Upon receiving this notification, the host device is released from the data recording process and can move to the next data recording process or the like.
  • the host device 1 can record as much data as necessary on the hologram disc 3 via the disc device 2 when necessary.
  • This recording method is characterized in that the range for performing the pre-cure is determined according to the recording data amount notified by the host device 1.
  • the curing process is performed only in the necessary area, so that the area where data is not recorded is deteriorated due to the pre-cure timeout, or the data is recorded in the area where data is not recorded by post-cure.
  • FIG. 3 shows a second sequence example of the recording method according to the present embodiment.
  • the sequence shown in FIG. 3 will be described.
  • the host device 1 Prior to requesting the disk device 2 to record data, the host device 1 notifies the disk device 2 of the amount of recording data and requests to secure an area for recording data.
  • the disk device 2 logically secures a data recording area of a size corresponding to the recording data amount designated by the host device in the hologram disk 3, and the address of the secured data area The size of the secured data recording area is notified.
  • the host device 1 When the data recording area is secured, the host device 1 requests data recording to the same area. (4) Upon receiving a data recording request from the host device 1, the disk device 2 performs pre-cure in a data recording area that is logically secured in the hologram disk 3. Thereby, a data recording area is physically secured. (5) The disk device 2 records data in the data recording area after the completion of the pre-curing process. (6) After completing the recording of data in the data recording area, the disk device 2 performs post-cure in the same area. (7) After the completion of the post cure, the disk device 2 notifies the host device 3 to that effect. Upon receiving this notification, the host device is released from the data recording process and can move to the next data recording process or the like.
  • the same effect as in the first example of the sequence can be obtained.
  • the difference from the first sequence example is that the data recording area is logically secured once, and then the data recording area is physically secured only after the pre-cure is performed at the stage where data is actually recorded. is there. Securing the logical data recording area does not physically act on the hologram disk. Therefore, the host device 1 can redo the data recording area when the amount of the recording data has to be changed, and can secure the data recording area more flexibly.
  • the implementation of the pre-cure at the timing of recording data can reduce the risk that a pre-cure timeout will occur due to the time from the pre-cure execution to the start of data recording.
  • the data recording area securing request is requested from the host to the disk device prior to the data recording request, but of course there is no data recording area securing request from the host and there is a data recording request. It does not matter.
  • This configuration is the same in the flow shown in FIGS. 4 and 5 in addition to the present embodiment.
  • FIG. 4 shows a third sequence example of the recording method according to the present embodiment.
  • the host apparatus 1 records data on the hologram disk 3 via the disk apparatus 2.
  • the communication with the disk device 2 and the operation of the disk device 2 on the hologram disk 3 are shown in time series.
  • the sequence shown in FIG. 4 will be described.
  • the host device 1 Prior to requesting the disk device 2 to record data, the host device 1 notifies the disk device 2 of the amount of recording data and requests to secure an area for recording data.
  • the disk device 2 logically secures a data recording area of a size corresponding to the recording data amount designated by the host device in the hologram disk 3, and the address of the secured data area The size of the secured data recording area is notified.
  • the host apparatus 1 requests data recording to the same area.
  • the disk device 2 Upon receiving a data recording request from the host device 1, the disk device 2 performs pre-cure in the data recording area that is logically secured in the hologram disk 3. Thereby, a data recording area is physically secured.
  • the disk device 2 records data in the data recording area after the completion of the pre-curing process.
  • the disk device 2 Upon completion of data recording, the disk device 2 notifies the host device 1 that all requested data has been recorded.
  • the host device 1 requests the disk device 2 to perform the data recording area closing process.
  • the disk device 2 Upon receiving a request to close the data recording area, the disk device 2 performs post-cure in the data recording area. (9) When the post-cure is completed, the disk device 2 notifies the host device 1 to that effect. Upon receiving this notification, the host device is released from the data recording process and can move to the next data recording process or the like.
  • the disk device 2 performs post-cure in response to a data recording area close request from the host device 1.
  • the disk device 2 clearly indicates from the host device 1 that it is not necessary to record any more data in the data recording area, so that all data is recorded or not recorded in the data recording area. Therefore, post-cure can be performed at an appropriate timing.
  • the post-cure timeout can be avoided by performing the post-cure at the timing when the disk device 2 does not reach the post-cure timeout. .
  • FIG. 5 shows a fourth example of a recording method sequence according to the present embodiment.
  • the sequence shown in FIG. 5 will be described.
  • the host device 1 Prior to requesting the disk device 2 to record data, the host device 1 notifies the disk device 2 of the amount of recording data and requests to secure an area for recording data.
  • the disk device 2 logically secures a data recording area of a size corresponding to the recording data amount designated by the host device in the hologram disc 3, and the address of the secured data area The size of the secured data recording area is notified.
  • the host apparatus 1 requests data recording to the same area.
  • the disk device 2 Upon receiving a data recording request from the host device 1, the disk device 2 performs pre-cure in the data recording area that is logically secured in the hologram disk 3. Thereby, a data recording area is physically secured.
  • the disk device 2 records data in the data recording area after the completion of the pre-curing process.
  • the disk device 2 Upon completion of data recording, the disk device 2 notifies the host device 1 that all requested data has been recorded.
  • the host device 1 requests the disk device 2 to perform the data recording area closing process.
  • the disk device 2 Upon receipt of the data recording area close request, the disk device 2 notifies the host device 1 that the data recording area has been closed (accepted).
  • the host device Upon receiving this notification, the host device is released from the data recording process and can move to the next data recording process or the like. (9) The disk device 2 notifies the host device that the disk recording area is closed, and then performs post-cure in the data recording area, and actually closes the data recording area.
  • post-cure is performed after notifying the host device 1 of the completion of data recording area closing. This eliminates the need for the host device 1 to wait for the completion of post-cure.
  • the host device 1 can request the disk device 2 to secure a new data recording area for the next recording. Since the disk device 2 logically secures the data recording area, it can accept a request for securing the data recording area from the host device 1 in parallel with the post-cure.
  • the recording method sequence As described above, four examples of the recording method sequence according to the present embodiment have been shown, but a recording method combining these may be used.
  • data is recorded in the data recording area with a single recording request. However, data may be recorded in the data recording area in several times.
  • the recording data area disk device 2 having a size corresponding to the recording data amount requested by the host device 1 is secured. However, the disk device records data having a size exceeding or less than the request of the host device 1. An area may be secured. Since the size of the data recording area secured by the disk device 2 is notified to the host device 1, the host device 1 can adjust the amount of data to be recorded according to the notified size. In this way, the data recording area secured in the disk device 2 can be used efficiently without waste.
  • FIG. 6 shows the internal configuration of the disk device 2 of FIG. 1 in detail.
  • 1 shows a host device
  • FIG. 2 shows a disk device
  • FIG. 3 shows a hologram disk.
  • the logical data recording area is secured when the host device 1 requests the disk device 2 to secure the data recording area.
  • the request from the host device 1 is transmitted to the system control unit 4 via the communication unit 5.
  • the system control unit 4 receives the transmission from the communication unit 5 and recognizes that the host device 1 is required to secure the data recording area, the data of the size corresponding to the recording data amount designated by the host device 1 is obtained. It is determined whether a recording area can be secured. When it is determined that the data recording area can be secured, the address and size of the area are notified to the host device 1 via the communication unit 5.
  • a data recording area is logically secured.
  • the system control unit 4 determines the execution of the pre-cure when receiving the request for securing the data recording area from the host device 1 or the data recording request to the data recording area via the communication unit 5.
  • the system control means 4 drives the disk support means 8 via the servo means 7 and positions a desired area of the hologram disk 3 directly below the cure means 9.
  • the curing means 9 is controlled to irradiate a desired area of the hologram disk 3 with the curing beam from the curing means 9 to perform pre-curing.
  • a data recording area is physically secured.
  • the system control means 4 When transmitting the reservation of the (physical) data recording area to the host device 1, the system control means 4 notifies the host device 1 via the communication means 5 after the completion of the pre-curing. With the above operation, a data recording area is physically secured.
  • Data recording in the data recording area is performed in accordance with a data recording request from the host device 1.
  • the system control means 4 drives the disk support means 8 via the servo control means 7, and the desired hologram disc is obtained.
  • the area is positioned on the recording / reproducing means 11.
  • the system control unit 4 controls the memory unit 6 to accumulate user data transferred from the host device 1 to the memory unit 6 via the communication unit 5.
  • the system control means 4 controls the memory means 4, the signal processing means 10, and the recording / reproducing means 11, and the user data accumulated in the memory means 6 is signal processing means.
  • the signal processing means 10 generates recording data based on the transferred user data, sends it to the recording / reproducing means 11, and transmits a beam based on the recording data from the recording / reproducing means 11 to the hologram disc 3.
  • Data recording is achieved by irradiation.
  • the system control unit 4 notifies the host device 1 via the communication unit 5. With the above operation, data recording in the data recording area is achieved.
  • Closing of the data recording area is achieved by performing post-cure.
  • the system control unit 4 decides to perform post-cure when data recording is completed, when a close request is received from the host device 1 via the communication unit 5, or when a post-cure timeout is avoided.
  • the system control means 4 drives the disk support means 8 via the servo means 7 and positions a desired area of the hologram disk 3 directly below the cure means 9.
  • the curing means 9 is controlled to irradiate the hologram disk 3 with a curing beam from the curing means 9, post-curing is performed, and the data recording area is closed.
  • the main operation related to the present embodiment has been shown to be achieved mainly by the system control means 4.
  • the system control means 4 performs the recording sequence according to the present embodiment held by the recording method holding means 12.
  • Various processes are executed as usual.
  • Various recording sequences can be realized by replacing the recording sequences held in the recording method holding unit 12.
  • the recording method according to the present embodiment can be performed, and this is efficient and reliable when recording data on the hologram disk. Can be implemented high.
  • FIG. 6 shows a configuration in which the system control unit 4 and the recording method holding unit 12 are separated from each other. However, these may be integrated, and the recording sequence may be executed by either hardware or software. It doesn't matter.
  • the disk device 2 secures a data recording area according to the recording data amount designated by the host device 1.
  • the host device 1 In order to allow the host device 1 to specify various amounts of data, it is necessary to be able to physically adjust the size of the data recording area. Since the data recording area is secured by pre-cure, in order to make the data recording area of various sizes, it is necessary to be able to adjust the irradiation range of the cure beam in various ways.
  • the irradiation range of the cure beam can be realized by applying a mechanism for adjusting the cure beam size, but in this embodiment, the cure range is adjusted by devising the irradiation position while keeping the cure beam size constant. We propose a cure method that makes it possible.
  • FIGS. 7 to 13 shows a rectangle pointed by the letters A and B. This indicates the irradiation range of the cure beam on the hologram disk 3.
  • the square indicated by the letter A indicates the beam irradiation range during pre-curing
  • the square indicated by the letter B indicates the beam irradiation range during post-curing.
  • a square indicated by the letter C represents a data recording area secured by the pre-cure.
  • the small squares shown in the data recording area represent two-dimensional page data recorded in the data recording area, and each one is a recording unit. It is assumed that a maximum of 12 units of page data can be recorded in one cure beam irradiation range.
  • FIG. 7 shows a recording process when the recording data amount designated by the host apparatus 1 is 12 units.
  • a data recording area is secured by precure.
  • step (2) 12 units of data are recorded in the data recording area secured in step (1).
  • step (3) post-cure of the data recording area in which data is recorded in step (2) is performed, and the data recording area is closed.
  • the recording data amount designated by the host device 1 is 12 units, it indicates that the curing process can be performed only once for both pre-curing and post-curing.
  • FIG. 8 shows a recording process when the recording data amount designated by the host apparatus 1 is 24 units.
  • a first data recording area by precure is secured.
  • pre-cure is performed in an area adjacent to the first data recording area secured in step (1) to secure the second data recording area, and one data is combined with the first and second.
  • a recording area is formed.
  • 24 units of data are recorded in the data recording area.
  • post-cure is performed in the first area of the data recording area.
  • step (5) post-cure is performed in the second region. As a result, the entire data recording area is closed.
  • the pre-curing is performed twice by changing the irradiation position of the curing beam in order to secure the data recording area corresponding to the recording data amount. Indicated. If the data amount specified by the host device 1 is 36 units, the cure beam irradiation position is changed and pre-curing is performed for 3 degrees. If the data amount is 48 units, the curing beam irradiation position is changed for 4 degrees. By adjusting the cure processing range according to the recording data amount, such as performing pre-curing, a data recording area having a size corresponding to the recording data amount can be secured.
  • FIG. 9 shows five recording steps (1) to (5).
  • step (1) a first data recording area by precure is secured.
  • step (2) a cure beam is irradiated so as to partially overlap the first data recording area secured in step (1), and pre-curing is performed to secure a second data recording area.
  • one data recording area is formed by combining the first and second.
  • step (3) 18 units of data are recorded in the data recording area.
  • step (4) post-cure is performed in the first area of the data recording area.
  • step (5) a cure beam is irradiated so as to partially overlap the first data recording area, and post-cure is performed in the second area. As a result, the entire data recording area is closed.
  • FIG. 10 shows six recording steps (1) to (6).
  • step (1) a first data recording area by precure is secured.
  • step (2) 12 units of data are recorded in the first data area.
  • step (3) a cure beam is irradiated so as to partially overlap the first data recording area, and pre-curing is performed to secure the second data recording area.
  • step (4) data for 6 units is recorded in the second data recording area.
  • step (5) post-cure is performed in the first area of the data recording area.
  • a cure beam is irradiated so as to partially overlap the first data recording area, and post-cure is performed in the second area. As a result, the entire data recording area is closed.
  • FIG. 11 shows six recording steps (1) to (6).
  • a first data recording area by precure is secured.
  • 12 units of data are recorded in the first data area.
  • post-cure is performed in the first data recording area.
  • a cure beam is irradiated so as to partially overlap the first data recording area, and pre-curing is performed to secure a second data recording area.
  • data for 6 units is recorded in the second data recording area.
  • a cure beam is irradiated so as to partially overlap the first data recording area, and post-cure is performed in the second area. This completes the closing of the entire data recording area.
  • the recording data amount designated by the host device 1 is 18 units
  • the cure range was adjusted so that a cure beam was also irradiated to a part of the first region. Not only when the recording data amount is 18 units, but also when the data recording amount is divided by 12 units, if there is a remainder, the amount by which the cure beam overlaps the cured area is adjusted according to the amount and desired It is recommended to cure the range.
  • the left portion of the cure beam is overlaid on the existing data recording area, but the present invention is not limited to this.
  • the lower portion of the cure beam may be overlaid on the existing data recording area.
  • the sixth example and the seventh example of the curing method according to the present embodiment will be described in order with reference to FIGS. 12 and 13.
  • FIG. 12 shows a recording process in the case where four units of page data are recorded so as to be adjacent to the upper side of the already closed data recording area.
  • step (1) the cure beam is irradiated so that the lower part of the cure beam overlaps the upper end of the first data recording area, and pre-curing is performed to secure the data recording area.
  • step (2) four units of data are recorded in the data recording area.
  • step (3) a cure beam is irradiated to the same position as in step (1), and post-cure is performed in the data recording area.
  • FIG. 13 shows a recording process in the case of recording one unit of page data so as to be adjacent to the closed data recording area shown in (3) of FIG.
  • step (1) the cure beam is irradiated so that the lower portion of the cure beam overlaps the upper end portion of the data recording area, and pre-curing is performed to secure the data recording area.
  • step (2) one unit of data is recorded in the data recording area.
  • a cure beam is irradiated to the same position as in step (1), and post cure is performed in the data recording area.
  • the page data can be additionally written in an arbitrary recording unit at an arbitrary position. Therefore, a recording data area having a size corresponding to various recording data amounts designated by the host device can be secured, and the hologram disc can be used efficiently.
  • any of the first to seventh examples of the above-mentioned cure processing method can be implemented in the disk device 2 shown in FIG.
  • the irradiation position of the cure beam is adjusted by the system control means 4 driving the disk support means 8 via the servo means 7. Since the relative position between the hologram disk 3 and the curing means 9 can be adjusted, a cure beam can be irradiated at an arbitrary position. Thereby, the cure beam can be irradiated so as to overlap a part of the existing data recording area, and the amount of overlap can be adjusted freely. Therefore, the recording method proposed by the present embodiment can be realized, and the data recording area can be realized according to various recording data amounts designated by the host device 1 and can be efficiently used for the hologram disc. And reliable data recording can be achieved.
  • the cure processing method according to the present embodiment has a fixed cure beam size and can cure a region smaller than the size. Therefore, the same effect as changing the cure beam size can be obtained. It can be obtained by a curing means of constitution.

Abstract

The present invention addresses the problem of providing a disk device and disk recording method whereby data can be efficiently and highly reliably recorded on a hologram disk. In the present invention, by making it possible to adjust a cure processing range, a data recording region is reserved having a size that corresponds to the amount of recording data specified by a host device.

Description

ホログラムディスクに対応したディスク装置、ディスク記録方法Disk apparatus and disk recording method corresponding to hologram disk
本発明は、ホログラフィを利用してデータを記録するディスク装置と、それに適用するためのディスク記録方法に関する。 The present invention relates to a disk device for recording data using holography, and a disk recording method applied to the disk apparatus.
　　ホログラフィを利用してデータを記録するホログラムディスクは、データを記録する前にキュア処理が必要であり、また、データを記録した後にもキュア処理が必要である。前者は、プリキュア（あるいはプレキュア）と呼ばれ、後者をポストキュアと呼ばれる。このキュア処理は、キュア処理専用のビームをディスクに照射することで達成される。プリキュアが実施されたホログラムディスクの領域は、データの記録が可能になり、ポストキュアが実施された領域は、記録されたデータが定着し、それ以降、同領域へデータを記録することができなくなる。また、ホログラムディスクは、キュア処理に関して、プリキュア実施後、所定時間内にデータの記録を開始しなければならいというプリキュアタイムアウトと、データを記録後、所定時間内にポストキュアを実施しなければならいポストキュアタイムアウト、という時間的な制約を伴う。このようなホログラムディスクに対応した記録方法の一例が、下記特許文献１に記載されている。 Hologram discs that record data using holography require a curing process before recording the data, and also require a curing process after recording the data. The former is called precure (or precure), and the latter is called postcure. This curing process is achieved by irradiating the disk with a beam dedicated to the curing process. Data can be recorded in the pre-cured hologram disc area. In the post-cured area, the recorded data is fixed, and thereafter, data cannot be recorded in the same area. . In addition, with respect to the curing process, the hologram disk has a pre-cure time-out in which data recording must be started within a predetermined time after the pre-curing process, and a post-curing process in which post-curing must be performed within a predetermined time after data recording. There is a time restriction of cure timeout. An example of a recording method corresponding to such a hologram disk is described in Patent Document 1 below.
特開２０１２－２２０６９０JP2012-220690
　　上記の通り、ホログラムディスクにデータを記録するためには、キュア処理が必要であり、また、キュア処理のタイムアウトを考慮する必要がある。本発明は、このように取り扱いに難しいところのあるホログラムディスクの特性を踏まえ、ホログラムディスクに効率的、かつ、信頼性高くデータを記録することを可能にするディスク装置、および、ディスク記録方法を提供することを課題とする。 As described above, in order to record data on the hologram disk, it is necessary to perform a curing process, and it is necessary to consider a timeout of the curing process. The present invention provides a disk device and a disk recording method capable of recording data on a hologram disk efficiently and reliably in consideration of the characteristics of a hologram disk that is difficult to handle. The task is to do.
上記目的は、例えばキュアタイミングに応じてホログラムディスクの記録領域確保のためのスケジューリングを制御することにより達成される。 The above object can be achieved by controlling the scheduling for securing the recording area of the hologram disk according to the cure timing, for example.
本発明により、ホログラムディスクにデータを効率的、かつ、信頼性高く記録できるようになる。 According to the present invention, data can be efficiently and reliably recorded on a hologram disc.
本発明に従った記録方法を実施するためのシステム構成例System configuration example for carrying out the recording method according to the present invention 本発明に従った記録方法のシーケンス第1例First example of sequence of recording method according to the present invention 本発明に従った記録方法のシーケンス第２例Second example of sequence of recording method according to the present invention 本発明に従った記録方法のシーケンス第３例Third example of sequence of recording method according to the present invention 本発明に従った記録方法のシーケンス第4例Fourth example of recording method sequence according to the present invention 本発明に従った記録方法を実施するためのディスク装置構成例Example of disk device configuration for carrying out recording method according to the present invention 本発明に従ったキュア処理方法の第1例First example of curing method according to the present invention 本発明に従ったキュア処理方法第の第２例Second example of curing method according to the present invention 本発明に従ったキュア処理方法第の第３例Third example of curing method according to the present invention 本発明に従ったキュア処理方法の第４例Fourth example of curing method according to the present invention 本発明に従ったキュア処理方法の第５例The fifth example of the curing method according to the present invention 本発明に従ったキュア処理方法の第６例A sixth example of the curing method according to the present invention 本発明に従ったキュア処理方法の第７例Seventh example of curing method according to the present invention
　（本実施例を実施するためのシステム構成例）
　本実施例に従った記録方法を実施するためのシステム構成例を図1に示す。同図は、ホスト装置１、ディスク装置２、および、ホログラムディスク３よりシステムが構成されていることを示している。本システムにおいてホスト装置１は、ディスク装置２を介してホログラムディスク３にデータを記録することができる。なお、図１では、ディスク装置２の外にホログラムディスク３があるように記載しているが、これは、後の説明の都合上、便宜的に記載したものであり、実際にはディスク装置２内部に置かれても良い。 (System configuration example for implementing this embodiment)
An example of a system configuration for implementing the recording method according to the present embodiment is shown in FIG. The figure shows that the system is composed of the host device 1, the disk device 2, and the hologram disk 3. In this system, the host device 1 can record data on the hologram disc 3 via the disc device 2. In FIG. 1, it is described that the hologram disk 3 is outside the disk device 2, but this is described for convenience for the sake of later explanation, and actually the disk device 2. May be placed inside.
　（本実施例に従った記録方法のシーケンス第1例）
　図１に示した構成のシステムに、本実施例に従った第1の記録方法を適用することで、ホスト装置１は、ディスク装置２を介してホログラムディスク３に効率的、かつ、信頼性高くデータを記録することができる。 (First example of recording method sequence according to this embodiment)
By applying the first recording method according to this embodiment to the system having the configuration shown in FIG. 1, the host device 1 can efficiently and reliably apply the hologram disc 3 via the disc device 2. Data can be recorded.
　図２は、本実施例に従った記録方法のシーケンス第1例を示したものであり、ホスト装置１がディスク装置２を介してホログラムディスク３にデータを記録する際のホスト装置１とディスク装置２との間の通信と、ディスク装置２のホログラムディスク３に対する作用を時系列に示している。以下、図２に示したシーケンスについて説明する。
（１）　ホスト装置１は、ディスク装置２にデータの記録を要求するに先立ち、ディスク装置２に対して記録データ量を通知し、データを記録するための領域を確保するよう要求する。
（２）　ディスク装置２は、データ記録領域確保要求を受けて、ホスト装置が指定する記録データ量に見合うサイズのデータ記録領域をホログラムディスク３内に論理的に確保する。その上で、同領域においてプリキュアを実施し、物理的にもデータ記録領域を確保する。
（３）　ディスク装置２は、データ記録領域を確保した後、同領域のアドレスとサイズをホスト装置１に通知する。
（４）　ホスト装置１は、データ記録領域が確保されたことを受けて、同領域へのデータの記録を要求する。
（５）　ディスク装置２は、ホスト装置１からのデータ記録要求を受けて、確保したデータ記録領域にデータを記録する。
（６）　ディスク装置２は、確保したデータ記録領域の全てにデータを記録すると、同領域にてポストキュアを実施する。これにより、同領域に記録したデータが定着し、これ以降、同領域へのデータを記録することが出来なくなる。
（７）　ディスク装置２は、ポストキュアを完了すると、ホスト装置１に対して要求されたデータを全て記録した旨を通知する。ホスト装置は、この通知を受けてデータ記録処理から解放され、次のデータ記録処理等に移行することができる。 FIG. 2 shows a first example of a recording method sequence according to the present embodiment. The host device 1 and the disk device when the host device 1 records data on the hologram disk 3 via the disk device 2. 2 and the operation of the disk device 2 on the hologram disk 3 in time series. Hereinafter, the sequence shown in FIG. 2 will be described.
(1) Prior to requesting the disk device 2 to record data, the host device 1 notifies the disk device 2 of the amount of recording data and requests to secure an area for recording data.
(2) Upon receiving the data recording area securing request, the disk device 2 logically secures a data recording area having a size corresponding to the recording data amount designated by the host device in the hologram disk 3. After that, pre-cure is performed in the same area, and a data recording area is physically secured.
(3) After securing the data recording area, the disk device 2 notifies the host device 1 of the address and size of the area.
(4) When the data recording area is secured, the host device 1 requests data recording to the same area.
(5) Upon receiving a data recording request from the host device 1, the disk device 2 records data in the secured data recording area.
(6) When the disk device 2 records data in all the reserved data recording areas, the disk device 2 performs post-cure in the same area. As a result, the data recorded in the same area is fixed, and thereafter, data cannot be recorded in the same area.
(7) Upon completion of the post-cure, the disk device 2 notifies the host device 1 that all requested data has been recorded. Upon receiving this notification, the host device is released from the data recording process and can move to the next data recording process or the like.
　以上示した手順に従えば、ホスト装置１は、ディスク装置２を介してホログラムディスク３に必要な時に必要なだけデータを記録することが可能になる。本記録方法は、ホスト装置１が通知する記録データ量に応じてプリキュアを実施する範囲を決定する点が特徴である。これにより、必要な領域に限ってキュア処理が実施されるため、データを記録していない領域をプリキュアタイムアウトによって劣化させてしまうといったことや、ポストキュアによってデータを記録していない領域にデータを記録できなくなってしまうといったデータ記録領域の浪費することがない。よって、ディスクのデータ記録領域を無駄なく効率的に利用することができ、また、データを記録すべき領域を信頼性高くキュア処理できるため、データを信頼性高く記録することが可能である。 If the procedure described above is followed, the host device 1 can record as much data as necessary on the hologram disc 3 via the disc device 2 when necessary. This recording method is characterized in that the range for performing the pre-cure is determined according to the recording data amount notified by the host device 1. As a result, the curing process is performed only in the necessary area, so that the area where data is not recorded is deteriorated due to the pre-cure timeout, or the data is recorded in the area where data is not recorded by post-cure. There is no wasted data recording area that cannot be done. Therefore, the data recording area of the disc can be used efficiently without waste, and the area where the data is to be recorded can be cured with high reliability, so that the data can be recorded with high reliability.
　（本実施例に従った記録方法のシーケンス第２例）
　図１に示した構成のシステムに、本実施例に従った記録方法のシーケンス第2例を適用しても効率的、かつ、確実なデータの記録を実現することができる。 (Second example of sequence of recording method according to this embodiment)
Even when the second sequence example of the recording method according to this embodiment is applied to the system having the configuration shown in FIG. 1, it is possible to realize efficient and reliable data recording.
　図３は、本実施例に従った記録方法のシーケンス第2例を示したものであり、ホスト装置１がディスク装置２を介してホログラムディスク３にデータを記録する際のホスト装置１とディスク装置２との間の通信と、ディスク装置２のホログラムディスク３に対する作用を時系列に示している。以下、図３に示したシーケンス説明する。
（１）　ホスト装置１は、ディスク装置２にデータの記録を要求するに先立ち、ディスク装置２に対して記録データ量を通知し、データを記録するための領域を確保するよう要求する。
（２）　ディスク装置２は、データ記録領域確保要求を受けて、ホスト装置が指定する記録データ量に見合うサイズのデータ記録領域をホログラムディスク３内に論理的に確保し、確保したデータ領域のアドレスと確保したデータ記録領域のサイズを通知する。
（３）　ホスト装置１は、データ記録領域が確保されたことを受けて、同領域へのデータの記録を要求する。
（４）　ディスク装置２は、ホスト装置１からのデータ記録要求を受けて、ホログラムディスク３内に論理的に確保しておいたデータ記録領域においてプリキュアを実施する。これにより、データ記録領域を物理的に確保する。
（５）　ディスク装置２は、プリキュア処理終了後、データ記録領域にデータを記録する。
（６）ディスク装置２は、データ記録領域へのデータの記録を完了後、同領域にてポストキュアを実施する。
（７）ディスク装置２は、ポストキュア完了後、その旨をホスト装置３へ通知する。ホスト装置は、この通知を受けてデータ記録処理から解放され、次のデータ記録処理等に移行することができる。 FIG. 3 shows a second sequence example of the recording method according to the present embodiment. The host device 1 and the disk device when the host device 1 records data on the hologram disk 3 via the disk device 2. 2 and the operation of the disk device 2 on the hologram disk 3 in time series. Hereinafter, the sequence shown in FIG. 3 will be described.
(1) Prior to requesting the disk device 2 to record data, the host device 1 notifies the disk device 2 of the amount of recording data and requests to secure an area for recording data.
(2) Upon receiving the data recording area securing request, the disk device 2 logically secures a data recording area of a size corresponding to the recording data amount designated by the host device in the hologram disk 3, and the address of the secured data area The size of the secured data recording area is notified.
(3) When the data recording area is secured, the host device 1 requests data recording to the same area.
(4) Upon receiving a data recording request from the host device 1, the disk device 2 performs pre-cure in a data recording area that is logically secured in the hologram disk 3. Thereby, a data recording area is physically secured.
(5) The disk device 2 records data in the data recording area after the completion of the pre-curing process.
(6) After completing the recording of data in the data recording area, the disk device 2 performs post-cure in the same area.
(7) After the completion of the post cure, the disk device 2 notifies the host device 3 to that effect. Upon receiving this notification, the host device is released from the data recording process and can move to the next data recording process or the like.
　以上に示した手順に従えば、上記のシーケンス第1例と同様の効果を得ることができる。シーケンス第1例との違いは、データ記録領域が一旦、論理的に確保され、その後、実際にデータ記録する段になってプリキュアが実施されてはじめて物理的にデータ記録領域が確保される点にある。論理的なデータ記録領域の確保は、ホログラムディスクに物理的に何ら作用しない。そのため、ホスト装置１は、記録データ量を変更せざるを得ない場合などに、データ記録領域の確保をやり直すことができ、データ記録領域の確保をより柔軟に実施することができる。また、データを記録するタイミングでのプリキュアの実施は、プリキュア実施からデータの記録を開始するまでに時間が空いてしまいプリキュアタイムアウトにかかってしまうという危険性を軽減することができる。 By following the procedure shown above, the same effect as in the first example of the sequence can be obtained. The difference from the first sequence example is that the data recording area is logically secured once, and then the data recording area is physically secured only after the pre-cure is performed at the stage where data is actually recorded. is there. Securing the logical data recording area does not physically act on the hologram disk. Therefore, the host device 1 can redo the data recording area when the amount of the recording data has to be changed, and can secure the data recording area more flexibly. In addition, the implementation of the pre-cure at the timing of recording data can reduce the risk that a pre-cure timeout will occur due to the time from the pre-cure execution to the start of data recording.
　なお、本実施例ではデータ記録要求に先立ってデータ記録領域確保要求がホストからディスク装置に対して要求される例で示したが、もちろんホストからデータ記録領域確保要求がなくデータ記録要求があるものであっても構わない。かかる構成は本実施例のほか、図４や図５で示すフローにあっても同じである。 In this embodiment, the data recording area securing request is requested from the host to the disk device prior to the data recording request, but of course there is no data recording area securing request from the host and there is a data recording request. It does not matter. This configuration is the same in the flow shown in FIGS. 4 and 5 in addition to the present embodiment.
　この場合も、プリキュアやポストキュア等事前処理、事後処理が必要なホログラムを利用したアーカイブシステムにおいて、ホストからの要求に対して適切なスケジューリングをすることで、ホログラムディスクにデータを効率的、かつ、信頼性高く記録できるようになる。 In this case as well, in the archive system using holograms that require pre-processing and post-processing such as pre-cure and post-cure, data can be efficiently stored on the hologram disk by performing appropriate scheduling in response to requests from the host, and It becomes possible to record with high reliability.
　（本実施例に従った記録方法のシーケンス第3例）
　を図１に示した構成のシステムに、本実施例に従った記録方法のシーケンス第3例を適用しても効率的、かつ、確実なデータの記録を実現することができる。 (Third example of recording method sequence according to this embodiment)
Even if the third sequence example of the recording method according to this embodiment is applied to the system having the configuration shown in FIG. 1, it is possible to realize efficient and reliable data recording.
　図４は、本実施例に従った記録方法のシーケンス第3例を示したものであり、同様にホスト装置１がディスク装置２を介してホログラムディスク３にデータを記録する際のホスト装置１とディスク装置２との間の通信と、ディスク装置２のホログラムディスク３に対する作用を時系列に示している。以下、図４に示したシーケンスを説明する。
（１）ホスト装置１は、ディスク装置２にデータの記録を要求するに先立ち、ディスク装置２に対して記録データ量を通知し、データを記録するための領域を確保するよう要求する。
（２）ディスク装置２は、データ記録領域確保要求を受けて、ホスト装置が指定する記録データ量に見合うサイズのデータ記録領域をホログラムディスク３内に論理的に確保し、確保したデータ領域のアドレスと確保したデータ記録領域のサイズを通知する。
（３）ホスト装置１は、データ記録領域が確保されたことを受けて、同領域へのデータの記録を要求する。
（４）ディスク装置２は、ホスト装置１からのデータ記録要求を受けて、ホログラムディスク３内に論理的に確保しておいたデータ記録領域においてプリキュアを実施する。これにより、データ記録領域を物理的に確保する。
（５）ディスク装置２は、プリキュア処理終了後、データ記録領域にデータを記録する。
（６）ディスク装置２は、データの記録を完了すると、ホスト装置１に対して要求されたデータを全て記録した旨を通知する。
（７）ホスト装置１は、データの記録完了の通知を受けて、データ記録領域のクローズ処理の実施をディスク装置２に要求する。
（８）ディスク装置２は、データ記録領域のクローズ要求を受けて、データ記録領域においてポストキュアを実施する。
（９）ディスク装置２は、ポストキュアを完了すると、その旨をホスト装置１へ通知する。ホスト装置は、この通知を受けてデータ記録処理から解放され、次のデータ記録処理等に移行することができる。 FIG. 4 shows a third sequence example of the recording method according to the present embodiment. Similarly, the host apparatus 1 records data on the hologram disk 3 via the disk apparatus 2. The communication with the disk device 2 and the operation of the disk device 2 on the hologram disk 3 are shown in time series. Hereinafter, the sequence shown in FIG. 4 will be described.
(1) Prior to requesting the disk device 2 to record data, the host device 1 notifies the disk device 2 of the amount of recording data and requests to secure an area for recording data.
(2) Upon receiving the data recording area securing request, the disk device 2 logically secures a data recording area of a size corresponding to the recording data amount designated by the host device in the hologram disk 3, and the address of the secured data area The size of the secured data recording area is notified.
(3) When the data recording area is secured, the host apparatus 1 requests data recording to the same area.
(4) Upon receiving a data recording request from the host device 1, the disk device 2 performs pre-cure in the data recording area that is logically secured in the hologram disk 3. Thereby, a data recording area is physically secured.
(5) The disk device 2 records data in the data recording area after the completion of the pre-curing process.
(6) Upon completion of data recording, the disk device 2 notifies the host device 1 that all requested data has been recorded.
(7) Upon receiving the data recording completion notification, the host device 1 requests the disk device 2 to perform the data recording area closing process.
(8) Upon receiving a request to close the data recording area, the disk device 2 performs post-cure in the data recording area.
(9) When the post-cure is completed, the disk device 2 notifies the host device 1 to that effect. Upon receiving this notification, the host device is released from the data recording process and can move to the next data recording process or the like.
　以上示した手順に従えば、シーケンス第1及びシーケンス第2と同様の効果を得ることができる。上記二例との違いは、ホスト装置１からのデータ記録領域クローズ要求を受けてディスク装置２がポストキュアを実施する点にある。これにより、ディスク装置２は、データ記録領域にそれ以上データを記録する必要がないことをホスト装置１より明示されるため、データ記録領域に全てデータを記録している、記録していないにかかわらず、的確なタイミングでポストキュアを実施することができる。ホスト装置１からのデータ記録領域のクローズ要求がない場合は、ディスク装置２がポストキュアタイムアウトにかからないタイミングでディスク装置２の判断によってポストキュアを実施することで、ポストキュアタイムアウトを回避することが出来る。 By following the procedure shown above, the same effects as those in the first sequence and the second sequence can be obtained. The difference from the above two examples is that the disk device 2 performs post-cure in response to a data recording area close request from the host device 1. As a result, the disk device 2 clearly indicates from the host device 1 that it is not necessary to record any more data in the data recording area, so that all data is recorded or not recorded in the data recording area. Therefore, post-cure can be performed at an appropriate timing. When there is no request for closing the data recording area from the host device 1, the post-cure timeout can be avoided by performing the post-cure at the timing when the disk device 2 does not reach the post-cure timeout. .
　（本実施例に従った記録方法のシーケンス第４例）
　図１に示した構成のシステムに、本実施例に従った記録方法のシーケンス第4例を適用しても効率的、かつ、確実なデータの記録を実現することができる。 (Fourth example of sequence of recording method according to this embodiment)
Even when the fourth sequence example of the recording method according to this embodiment is applied to the system having the configuration shown in FIG. 1, it is possible to realize efficient and reliable data recording.
　図５は、本実施例に従った記録方法のシーケンス第4例を示したものであり、ホスト装置１がディスク装置２を介してホログラムディスク３にデータを記録する際のホスト装置１とディスク装置２との間の通信と、ディスク装置２のホログラムディスク３に対する作用を時系列に示している。以下、図５に示したシーケンスを説明する。
（１）ホスト装置１は、ディスク装置２にデータの記録を要求するに先立ち、ディスク装置２に対して記録データ量を通知し、データを記録するための領域を確保するよう要求する。
（２）ディスク装置２は、データ記録領域確保要求を受けて、ホスト装置が指定する記録データ量に見合うサイズのデータ記録領域をホログラムディス３内に論理的に確保し、確保したデータ領域のアドレスと確保したデータ記録領域のサイズを通知する。
（３）ホスト装置１は、データ記録領域が確保されたことを受けて、同領域へのデータの記録を要求する。
（４）ディスク装置２は、ホスト装置１からのデータ記録要求を受けて、ホログラムディスク３内に論理的に確保しておいたデータ記録領域においてプリキュアを実施する。これにより、データ記録領域を物理的に確保する。
（５）ディスク装置２は、プリキュア処理終了後、データ記録領域にデータを記録する。
（６）ディスク装置２は、データの記録を完了すると、ホスト装置１に対して要求されたデータを全て記録した旨を通知する。
（７）ホスト装置１は、データの記録完了の通知を受けて、データ記録領域のクローズ処理の実施をディスク装置２に要求する。
（８）ディスク装置２は、データ記録領域のクローズ要求を受け付けると、データ記録領域のクローズ（受付）を完了した旨をホスト装置１に通知する。ホスト装置は、この通知を受けてデータ記録処理から解放され、次のデータ記録処理等に移行することができる。
（９）ディスク装置２は、ディスク記録領域クローズ完了をホスト装置に通知した後、データ記録領域においてポストキュアを実施し、実際にデータ記録領域をクローズする。 FIG. 5 shows a fourth example of a recording method sequence according to the present embodiment. The host device 1 and the disk device when the host device 1 records data on the hologram disk 3 via the disk device 2. 2 and the operation of the disk device 2 on the hologram disk 3 in time series. Hereinafter, the sequence shown in FIG. 5 will be described.
(1) Prior to requesting the disk device 2 to record data, the host device 1 notifies the disk device 2 of the amount of recording data and requests to secure an area for recording data.
(2) Upon receiving the data recording area securing request, the disk device 2 logically secures a data recording area of a size corresponding to the recording data amount designated by the host device in the hologram disc 3, and the address of the secured data area The size of the secured data recording area is notified.
(3) When the data recording area is secured, the host apparatus 1 requests data recording to the same area.
(4) Upon receiving a data recording request from the host device 1, the disk device 2 performs pre-cure in the data recording area that is logically secured in the hologram disk 3. Thereby, a data recording area is physically secured.
(5) The disk device 2 records data in the data recording area after the completion of the pre-curing process.
(6) Upon completion of data recording, the disk device 2 notifies the host device 1 that all requested data has been recorded.
(7) Upon receiving the data recording completion notification, the host device 1 requests the disk device 2 to perform the data recording area closing process.
(8) Upon receipt of the data recording area close request, the disk device 2 notifies the host device 1 that the data recording area has been closed (accepted). Upon receiving this notification, the host device is released from the data recording process and can move to the next data recording process or the like.
(9) The disk device 2 notifies the host device that the disk recording area is closed, and then performs post-cure in the data recording area, and actually closes the data recording area.
　以上示した手順に従えば、上記したシーケンス三例と同様の効果を得ることができる。上記三例との大きな違いは、ホスト装置１に対してデータ記録領域クローズ完了を通知した後に、ポストキュアを実施する点にある。これにより、ホスト装置１は、ポストキュアの完了を待つ必要がなくなるため、例えば、次の記録に向けて新たなデータ記録領域の確保をディスク装置２に要求することが可能である。ディスク装置２は、データ記録領域を論理的に確保するため、ポストキュアと並行してホスト装置１からのデータ記録領域確保の要求を受け付けることができる。 By following the procedure shown above, it is possible to obtain the same effect as the above three examples of sequences. A major difference from the above three examples is that post-cure is performed after notifying the host device 1 of the completion of data recording area closing. This eliminates the need for the host device 1 to wait for the completion of post-cure. For example, the host device 1 can request the disk device 2 to secure a new data recording area for the next recording. Since the disk device 2 logically secures the data recording area, it can accept a request for securing the data recording area from the host device 1 in parallel with the post-cure.
　以上、本実施例に従う記録方法のシーケンスを四例ほど示したが、これらを組み合わせた記録方法としてもよい。上記の記録方法の説明では、便宜上、一度の記録要求でデータ記録領域にデータを記録することを示したが、データ記録領域へは、数回に分けてデータの記録を行ってもよい。また、ホスト装置１が要求する記録データ量に応じたサイズの記録データ領域ディスク装置２が確保することを述べたが、ディスク装置は、ホスト装置１の要求を超える、または、下回るサイズのデータ記録領域を確保してもよい。ディスク装置２が確保したデータ記録領域のサイズは、ホスト装置１へ通知されるため、ホスト装置１は、通知されたサイズに従って記録するデータの量を調整することができる。このようにすれば、ディスク装置２において確保したデータ記録領域は、無駄なく効率的に使用することができる。 As described above, four examples of the recording method sequence according to the present embodiment have been shown, but a recording method combining these may be used. In the above description of the recording method, for the sake of convenience, it is shown that data is recorded in the data recording area with a single recording request. However, data may be recorded in the data recording area in several times. Further, it has been described that the recording data area disk device 2 having a size corresponding to the recording data amount requested by the host device 1 is secured. However, the disk device records data having a size exceeding or less than the request of the host device 1. An area may be secured. Since the size of the data recording area secured by the disk device 2 is notified to the host device 1, the host device 1 can adjust the amount of data to be recorded according to the notified size. In this way, the data recording area secured in the disk device 2 can be used efficiently without waste.
　（本実施例を実施するためのディスク装置構成例）
　上記の本実施例の記録方法は、例えば、図６に示す構成のディスク装置によって実施することができる。図６は、図１のディスク装置２の内部構成を詳細に記載したものである。同図１は、ホスト装置、同図２は、ディスク装置、同図３ホログラムディスクである。 (Disk device configuration example for carrying out this embodiment)
The recording method of the present embodiment described above can be implemented by, for example, a disk device having the configuration shown in FIG. FIG. 6 shows the internal configuration of the disk device 2 of FIG. 1 in detail. 1 shows a host device, FIG. 2 shows a disk device, and FIG. 3 shows a hologram disk.
　以下、図６を用いて、上記の本実施例に従った記録方法を実施する際のディスク装置２の主要な動作について説明する。 Hereinafter, the main operation of the disk device 2 when performing the recording method according to the above-described embodiment will be described with reference to FIG.
　まず、論理的にデータ記録領域を確保する際の動作について説明する。論理的なデータ記録領域の確保は、ホスト装置１がデータ記録領域の確保をディスク装置２に要求することで実施される。ホスト装置１の要求は、通信手段５を介してシステム制御手段４に伝達される。システム制御手段４は、通信手段５からの伝達を受けて、ホスト装置１からデータ記録領域の確保を要求されていることを認識すると、ホスト装置１が指定する記録データ量に見合ったサイズのデータ記録領域を確保できるか否かを判断する。データ記録領域の確保が可能であると判断した場合は、同領域のアドレスとサイズを、通信手段５を介してホスト装置１に通知する。 First, the operation for logically securing the data recording area will be described. The logical data recording area is secured when the host device 1 requests the disk device 2 to secure the data recording area. The request from the host device 1 is transmitted to the system control unit 4 via the communication unit 5. When the system control unit 4 receives the transmission from the communication unit 5 and recognizes that the host device 1 is required to secure the data recording area, the data of the size corresponding to the recording data amount designated by the host device 1 is obtained. It is determined whether a recording area can be secured. When it is determined that the data recording area can be secured, the address and size of the area are notified to the host device 1 via the communication unit 5.
　以上の動作により、論理的にデータ記録領域が確保される。
次に、物理的にデータ記録領域を確保する際の動作を説明する。
物理的なデータ記録領域の確保は、プリキュアを実施することで達成される。システム制御手段４は、ホスト装置１からのデータ記録領域の確保要求、あるいは、データ記録領域へのデータ記録要求を、通信手段５を介して受けたときにプリキュアの実施を決定する。プリキュアを実施する際に、システム制御手段４は、サーボ手段７を介してディスク支持手段８を駆動し、キュア手段９の直下にホログラムディスク３の所望の領域を位置付ける。その後、キュア手段９を制御して、キュア手段９よりキュアビームをホログラムディスク３の所望の領域に照射し、プリキュアを実施する。これにより、データ記録領域を物理的に確保する。（物理的な）データ記録領域の確保をホスト装置１へ伝達する場合は、システム制御手段４は、プリキュア完了後、通信手段５を介してホスト装置１にその旨を通知する。
以上の動作により、物理的にデータ記録領域が確保される。 With the above operation, a data recording area is logically secured.
Next, the operation for physically securing the data recording area will be described.
Securement of a physical data recording area is achieved by performing pre-cure. The system control unit 4 determines the execution of the pre-cure when receiving the request for securing the data recording area from the host device 1 or the data recording request to the data recording area via the communication unit 5. When carrying out the pre-cure, the system control means 4 drives the disk support means 8 via the servo means 7 and positions a desired area of the hologram disk 3 directly below the cure means 9. Thereafter, the curing means 9 is controlled to irradiate a desired area of the hologram disk 3 with the curing beam from the curing means 9 to perform pre-curing. Thereby, a data recording area is physically secured. When transmitting the reservation of the (physical) data recording area to the host device 1, the system control means 4 notifies the host device 1 via the communication means 5 after the completion of the pre-curing.
With the above operation, a data recording area is physically secured.
　次に、データ記録領域へのデータ記録領域を確保する際の動作を説明する。
データ記録領域へのデータの記録は、ホスト装置１からのデータ記録要求に従い実施する。システム制御手段４は、ホスト装置１からのデータ記録領域へのデータ記録要求を、通信手段５を介して受けると、サーボ制御手段７を介してディスク支持手段８を駆動し、ホログラムディスクの所望の領域を記録再生手段１１に位置付ける。同時に、システム制御手段４は、メモリ手段６を制御し、ホスト装置１から通信手段５を介してメモリ手段６に転送されるユーザデータを蓄積させる。所定量のユーザデータがメモリ手段に蓄積されると、システム制御手段４は、メモリ手段４、信号処理手段１０、記録再生手段１１を制御し、メモリ手段６に蓄積されたユーザデータを信号処理手段１０へ転送させ、信号処理手段１０には転送されたユーザデータに基づいて記録データを生成させ、それを記録再生手段１１へ送り、記録データに基づいたビームを記録再生手段１１からホログラムディスク３に照射させることでデータの記録を達成する。データの記録完了をホスト装置１へ伝達する場合は、システム制御手段４は、通信手段５を介してホスト装置１にその旨を通知する。
以上の動作により、データ記録領域へのデータの記録が達成される。 Next, an operation for securing a data recording area in the data recording area will be described.
Data recording in the data recording area is performed in accordance with a data recording request from the host device 1. When the system control means 4 receives a data recording request from the host device 1 to the data recording area via the communication means 5, the system control means 4 drives the disk support means 8 via the servo control means 7, and the desired hologram disc is obtained. The area is positioned on the recording / reproducing means 11. At the same time, the system control unit 4 controls the memory unit 6 to accumulate user data transferred from the host device 1 to the memory unit 6 via the communication unit 5. When a predetermined amount of user data is accumulated in the memory means, the system control means 4 controls the memory means 4, the signal processing means 10, and the recording / reproducing means 11, and the user data accumulated in the memory means 6 is signal processing means. The signal processing means 10 generates recording data based on the transferred user data, sends it to the recording / reproducing means 11, and transmits a beam based on the recording data from the recording / reproducing means 11 to the hologram disc 3. Data recording is achieved by irradiation. When the data recording completion is transmitted to the host device 1, the system control unit 4 notifies the host device 1 via the communication unit 5.
With the above operation, data recording in the data recording area is achieved.
　最後に、データ記録領域をクローズする際の動作について説明する。
データ記録領域のクローズは、ポストキュアを実施することで達成される。システム制御手段４は、データの記録が完了した時、ホスト装置１からクローズ要求を、通信手段５を介して受けた時、または、ポストキュアタイムアウトを回避する場合にポストキュアの実施を決定する。ポストキュアを実施する場合に、システム制御手段４は、サーボ手段７を介してディスク支持手段８を駆動し、キュア手段９の直下にホログラムディスク３の所望の領域を位置付ける。その後、キュア手段９を制御して、キュア手段９よりキュア用のビームをホログラムディスク３に照射し、ポストキュアを実施し、データ記録領域をクローズする。データ記録領域のクローズ完了をホスト装置１に通知する際は、ポストキュアの完了を待たずに通知する、あるいは、ポストキュアの完了を待って通知する、いずれの場合もシステム制御手段４は、通信手段５を介してホスト装置１にその旨を通知する。
以上の動作により、データ記録領域のクローズを達成することができる。 Finally, the operation when the data recording area is closed will be described.
Closing of the data recording area is achieved by performing post-cure. The system control unit 4 decides to perform post-cure when data recording is completed, when a close request is received from the host device 1 via the communication unit 5, or when a post-cure timeout is avoided. When performing the post cure, the system control means 4 drives the disk support means 8 via the servo means 7 and positions a desired area of the hologram disk 3 directly below the cure means 9. Thereafter, the curing means 9 is controlled to irradiate the hologram disk 3 with a curing beam from the curing means 9, post-curing is performed, and the data recording area is closed. When notifying the host device 1 of the completion of closing of the data recording area, notification is made without waiting for completion of post-cure, or notification is made after waiting for completion of post-cure. This is notified to the host device 1 via the means 5.
With the above operation, the data recording area can be closed.
　上記の本実施例に関する主要な動作は、システム制御手段４が主体となって達成されることを示したが、システム制御手段４は、記録方法保持手段１２が保持する本実施例に従う記録シーケンスに則り各種処理を実行する。記録方法保持手段１２に保持させる記録シーケンスを入れ替えることで、各種の記録シーケンスを実現することができる。 The main operation related to the present embodiment has been shown to be achieved mainly by the system control means 4. However, the system control means 4 performs the recording sequence according to the present embodiment held by the recording method holding means 12. Various processes are executed as usual. Various recording sequences can be realized by replacing the recording sequences held in the recording method holding unit 12.
　以上、説明した通り、図６に示した構成のディスク装置とすれば、本実施例に従う記録方法の実施が可能であり、ホログラムディスクにデータを記録する際にこれを効率的、かつ、信頼性高く実施することができる。 As described above, if the disk apparatus having the configuration shown in FIG. 6 is used, the recording method according to the present embodiment can be performed, and this is efficient and reliable when recording data on the hologram disk. Can be implemented high.
　なお、図６に示したディスク装置の構成は、飽くまでも一例であって、上記した本実施例に従う記録方法を実現するための主要動作を実行することが可能な構成であれば、これに限られるものではない。図６では、システム制御手段４と記録方法保持手段１２と別体となった構成を示したが、これらを一体とした構成でもよいし、記録シーケンスの実行は、ハードウェア、ソフトウェアのいずれであっても構わない。 Note that the configuration of the disk device shown in FIG. 6 is merely an example, and is not limited to this configuration as long as the main operation for realizing the recording method according to the present embodiment described above can be executed. It is not a thing. FIG. 6 shows a configuration in which the system control unit 4 and the recording method holding unit 12 are separated from each other. However, these may be integrated, and the recording sequence may be executed by either hardware or software. It doesn't matter.
　(本実施例に従うキュア処理方法)
　上記の本実施例に従う記録方法では、ホスト装置１が指定する記録データ量に応じて、ディスク装置２がデータ記録領域を確保することを示した。ホスト装置１が様々な量のデータを指定できるようにするためには、物理的にデータ記録領域のサイズを調整できるようにする必要がある。データ記録領域は、プリキュアによって確保するため、データ記録領域を様々なサイズとするには、キュアビームの照射範囲を様々に調整できるようにする必要がある。キュアビームの照射範囲は、キュアビームサイズを調整するための仕組みを適用することで実現可能であるが、本実施例では、キュアビームサイズを一定として、照射位置を工夫することでキュア範囲の調整を可能にするキュア処理方法を提案する。 (Cure processing method according to this embodiment)
In the recording method according to the above-described embodiment, it is shown that the disk device 2 secures a data recording area according to the recording data amount designated by the host device 1. In order to allow the host device 1 to specify various amounts of data, it is necessary to be able to physically adjust the size of the data recording area. Since the data recording area is secured by pre-cure, in order to make the data recording area of various sizes, it is necessary to be able to adjust the irradiation range of the cure beam in various ways. The irradiation range of the cure beam can be realized by applying a mechanism for adjusting the cure beam size, but in this embodiment, the cure range is adjusted by devising the irradiation position while keeping the cure beam size constant. We propose a cure method that makes it possible.
　以下、図７～図１３を用いて、本実施例に従うキュア処理方法について説明する。図７～図１３の何れの図にも文字A、および、文字Bにて指した四角形を示している。これは、ホログラムディスク３でのキュアビームの照射範囲を示している。文字Aが指示す四角形がプリキュア時のビーム照射範囲を示し、文字Bが指示す四角形がポストキュア時のビーム照射範囲を表す。また、文字Cが指示す四角形は、プリキュアにより確保したデータ記録領域を表す。データ記録領域内の示した小さな四角形はデータ記録領域に記録された２次元のページデータを表しており、１つ１つを記録単位とする。１つのキュアビーム照射範囲には、最大12単位のページデータを記録することができるものとする。 Hereinafter, the curing method according to the present embodiment will be described with reference to FIGS. Each of FIGS. 7 to 13 shows a rectangle pointed by the letters A and B. This indicates the irradiation range of the cure beam on the hologram disk 3. The square indicated by the letter A indicates the beam irradiation range during pre-curing, and the square indicated by the letter B indicates the beam irradiation range during post-curing. A square indicated by the letter C represents a data recording area secured by the pre-cure. The small squares shown in the data recording area represent two-dimensional page data recorded in the data recording area, and each one is a recording unit. It is assumed that a maximum of 12 units of page data can be recorded in one cure beam irradiation range.
　はじめに、ホスト装置１が指定する記録データ量が、１２単位の整数倍である場合について、図７、および、図8を用いて本実施例に従うキュア処理方法を説明する。 First, a cure processing method according to the present embodiment will be described with reference to FIGS. 7 and 8 when the amount of recording data specified by the host device 1 is an integral multiple of 12 units.
　(本実施例に従うキュア処理方法の第1例)
　図7を用いて、キュア処理方法の第１例について説明する。図７には、ホスト装置１が指定する記録データ量が12単位である場合の記録工程を示している。工程（１）では、プリキュアによりデータ記録領域を確保する。工程（２）では、工程（１）において確保したデータ記録領域へのデータを１２単位分記録する。工程（３）では、工程（２）においてデータを記録したデータ記録領域のポストキュアを実施し、データ記録領域をクローズする。 (First example of the curing method according to the present embodiment)
A first example of the curing method will be described with reference to FIG. FIG. 7 shows a recording process when the recording data amount designated by the host apparatus 1 is 12 units. In step (1), a data recording area is secured by precure. In step (2), 12 units of data are recorded in the data recording area secured in step (1). In step (3), post-cure of the data recording area in which data is recorded in step (2) is performed, and the data recording area is closed.
　本例では、ホスト装置１が指定する記録データ量が１２単位であるので、キュア処理の照射は、プリキュア、ポストキュアとも一度で済むことを表している。 In this example, since the recording data amount designated by the host device 1 is 12 units, it indicates that the curing process can be performed only once for both pre-curing and post-curing.
　(本実施例に従うキュア処理方法の第２例)
　図８を用いて、キュア処理方法の第２例について説明する。図８には、ホスト装置１が指定する記録データ量が24単位である場合の記録工程を示している。工程（１）では、プリキュアによる第１のデータ記録領域を確保する。工程（２）では、工程（１）において確保した第1のデータ記録領域に隣接する領域でのプリキュアを実施して第２のデータ記録領域を確保し、第1および第2合わせて一つのデータ記録領域を形成する。工程(３）は、データ記録領域への２４単位分のデータを記録する。工程（４）では、データ記録領域のうち、第１の領域にてポストキュアを実施する。工程（５）では、第２の領域にてポストキュアを実施する。これにより、データ記録領域全体をクローズする。 (Second example of the curing method according to the present embodiment)
A second example of the curing method will be described with reference to FIG. FIG. 8 shows a recording process when the recording data amount designated by the host apparatus 1 is 24 units. In the step (1), a first data recording area by precure is secured. In step (2), pre-cure is performed in an area adjacent to the first data recording area secured in step (1) to secure the second data recording area, and one data is combined with the first and second. A recording area is formed. In step (3), 24 units of data are recorded in the data recording area. In step (4), post-cure is performed in the first area of the data recording area. In step (5), post-cure is performed in the second region. As a result, the entire data recording area is closed.
　本例では、ホスト装置１が指定する記録データ量が24単位であることから、それに応じたデータ記録領域を確保すべく、キュアビームの照射位置を変えて２度に亘ってプリキュアを行うことを示した。ホスト装置１が指定するデータ量が３６単位であれば、キュアビームの照射位置を変えて３度に亘ってプリキュアを行い、４８単位であれば、キュアビームの照射位置を変えて４度に亘ってプリキュアを行うといったように、記録データ量に応じて、キュア処理範囲を調整することで、記録データ量に応じたサイズのデータ記録領域を確保することができる。 In this example, since the recording data amount designated by the host apparatus 1 is 24 units, the pre-curing is performed twice by changing the irradiation position of the curing beam in order to secure the data recording area corresponding to the recording data amount. Indicated. If the data amount specified by the host device 1 is 36 units, the cure beam irradiation position is changed and pre-curing is performed for 3 degrees. If the data amount is 48 units, the curing beam irradiation position is changed for 4 degrees. By adjusting the cure processing range according to the recording data amount, such as performing pre-curing, a data recording area having a size corresponding to the recording data amount can be secured.
　次に、ホスト装置１が指定する記録データ量が１８単位の場合について、本実施例に従うキュア処理方法を示す。 Next, a cure processing method according to the present embodiment in the case where the recording data amount designated by the host apparatus 1 is 18 units will be described.
　(本実施例に従うキュア処理方法の第３例)
　図９を用いて、キュア処理方法の第３例について説明する。図９には、（１）～（５）の５つの記録工程を示している。工程（１）では、プリキュアによる第１のデータ記録領域を確保する。工程（２）では、工程（１）において確保した第1のデータ記録領域に一部重なるようキュアビームを照射してプリキュアを実施して第２のデータ記録領域を確保する。これにより、第1および第2合わせて一つのデータ記録領域を形成する。工程(３）では、データ記録領域への１８単位分のデータを記録する。工程（４）では、データ記録領域のうち、第１の領域にてポストキュアを実施する。工程（５）では、第1のデータ記録領域に一部重なるようキュアビームを照射して、第２の領域にてポストキュアを実施する。これにより、データ記録領域全体をクローズする。 (Third example of the curing method according to the present embodiment)
A third example of the curing method will be described with reference to FIG. FIG. 9 shows five recording steps (1) to (5). In the step (1), a first data recording area by precure is secured. In step (2), a cure beam is irradiated so as to partially overlap the first data recording area secured in step (1), and pre-curing is performed to secure a second data recording area. Thus, one data recording area is formed by combining the first and second. In step (3), 18 units of data are recorded in the data recording area. In step (4), post-cure is performed in the first area of the data recording area. In step (5), a cure beam is irradiated so as to partially overlap the first data recording area, and post-cure is performed in the second area. As a result, the entire data recording area is closed.
　(本実施例に従うキュア処理方法の第４例)
　図１０を用いて、キュア処理方法の第４例について説明する。図１０には、（１）～（６）の６つの記録工程を示している。工程（１）では、プリキュアによる第１のデータ記録領域を確保する。工程（２）では、第1のデータ領域にデータを12単位記録する。工程（３）では、第1のデータ記録領域に一部重なるようキュアビームを照射してプリキュアを実施して第２のデータ記録領域を確保する。工程(４）では、第2のデータ記録領域へ6単位分のデータを記録する。工程（５）では、データ記録領域のうち、第１の領域にてポストキュアを実施する。工程（６）では、第1のデータ記録領域に一部重なるようキュアビームを照射して、第２の領域にてポストキュアを実施する。これにより、データ記録領域全体をクローズする。 (Fourth example of curing method according to this embodiment)
A fourth example of the curing method will be described with reference to FIG. FIG. 10 shows six recording steps (1) to (6). In the step (1), a first data recording area by precure is secured. In step (2), 12 units of data are recorded in the first data area. In step (3), a cure beam is irradiated so as to partially overlap the first data recording area, and pre-curing is performed to secure the second data recording area. In step (4), data for 6 units is recorded in the second data recording area. In step (5), post-cure is performed in the first area of the data recording area. In step (6), a cure beam is irradiated so as to partially overlap the first data recording area, and post-cure is performed in the second area. As a result, the entire data recording area is closed.
　(本実施例に従うキュア処理方法の第５例)
　図１１を用いて、キュア処理方法の第５例について説明する。図１１には、（１）～（６）の６つの記録工程を示している。工程（１）では、プリキュアによる第１のデータ記録領域を確保する。工程（２）では、第1のデータ領域にデータを12単位記録する。工程（３）では、第1のデータ記録領域においてポストキュアを実施する。工程（４）では、第1のデータ記録領域に一部重なるようキュアビームを照射してプリキュアを実施して第２のデータ記録領域を確保する。工程(４）では、第2のデータ記録領域へ6単位分のデータを記録する。工程（５）では、第1のデータ記録領域に一部重なるようキュアビームを照射して、第２の領域にてポストキュアを実施する。これにより、データ記録領域全体のクローズを完了する。 (Fifth example of the curing method according to the present embodiment)
A fifth example of the curing method will be described with reference to FIG. FIG. 11 shows six recording steps (1) to (6). In the step (1), a first data recording area by precure is secured. In step (2), 12 units of data are recorded in the first data area. In step (3), post-cure is performed in the first data recording area. In step (4), a cure beam is irradiated so as to partially overlap the first data recording area, and pre-curing is performed to secure a second data recording area. In step (4), data for 6 units is recorded in the second data recording area. In step (5), a cure beam is irradiated so as to partially overlap the first data recording area, and post-cure is performed in the second area. This completes the closing of the entire data recording area.
　以上の示したキュア処理方法の第3例、第4例、および、第5例では、ホスト装置１が指定する記録データ量が18単位であることから、第2の領域を確保する際に、第1の領域の一部にもキュアビームが照射されるようにしてキュア処理範囲を調整した。記録データ量が１８単位の場合に限らず、データ記録量を１２単位で除し場合に余りが生じる場合は、その量に応じて、キュアビームがキュア済みの領域に重なる量を調整し、所望の範囲がキュア処理されるようするとよい。また、上記のキュア処理方法の第3例、第4例、および、第5例のいずれを適用するかは、ホログラムディスクの特性に合わせて選択するとよい。 In the third example, the fourth example, and the fifth example of the cure processing method shown above, since the recording data amount designated by the host device 1 is 18 units, when securing the second area, The cure range was adjusted so that a cure beam was also irradiated to a part of the first region. Not only when the recording data amount is 18 units, but also when the data recording amount is divided by 12 units, if there is a remainder, the amount by which the cure beam overlaps the cured area is adjusted according to the amount and desired It is recommended to cure the range. In addition, it is preferable to select which of the third, fourth, and fifth examples of the curing processing method is applied in accordance with the characteristics of the hologram disk.
　上記のキュア処理方法の第3例～第5例では、キュアビームの左側部分を既存のデータ記録領域に重ねることを示したが、これに限るものではない。例えば、図１２や図１３に示すようにキュアビームの下側部分を既存のデータ記録領域に重ねてもよい。以下、図１２、および、図13を用いて、本実施例に従うキュア処理方法の第6例および第7例を順に説明する。 In the third to fifth examples of the above-described cure processing method, it has been shown that the left portion of the cure beam is overlaid on the existing data recording area, but the present invention is not limited to this. For example, as shown in FIGS. 12 and 13, the lower portion of the cure beam may be overlaid on the existing data recording area. Hereinafter, the sixth example and the seventh example of the curing method according to the present embodiment will be described in order with reference to FIGS. 12 and 13.
　(本実施例に従うキュア処理方法の第６例)
　図１２を用いて、キュア処理方法の第6例について説明する。図１２には、既にクローズされているデータ記録領域の上方に隣接するよう4単位分のページデータを記録する場合の記録工程を示している。工程（１）では、キュアビームの下側部分が第1のデータ記録領域の上端部に重なるようキュアビームを照射してプリキュアを実施してデータ記録領域を確保する。工程(２）では、データ記録領域へ４単位分のデータを記録する。工程（３）では、工程（１）と同様の位置にキュアビームを照射して、データ記録領域にてポストキュアを実施する。 (Sixth example of the curing method according to the present embodiment)
A sixth example of the curing method will be described with reference to FIG. FIG. 12 shows a recording process in the case where four units of page data are recorded so as to be adjacent to the upper side of the already closed data recording area. In step (1), the cure beam is irradiated so that the lower part of the cure beam overlaps the upper end of the first data recording area, and pre-curing is performed to secure the data recording area. In step (2), four units of data are recorded in the data recording area. In step (3), a cure beam is irradiated to the same position as in step (1), and post-cure is performed in the data recording area.
　(本実施例に従うキュア処理方法の第７例)
　図１３を用いて、キュア処理方法の第7例について説明する。図１３には、図１２の（３）に示したクローズ済みのデータ記録領域に隣接するよう１単位分のページデータを記録する場合の記録工程を示している。工程（１）では、キュアビームの下側部分がデータ記録領域の上端部に重なるようキュアビームを照射してプリキュアを実施してデータ記録領域を確保する。工程(２）では、データ記録領域へ１単位分のデータを記録する。工程（１）と同様の位置にキュアビームを照射して、データ記録領域にてポストキュアを実施する。 (Seventh example of the curing method according to the present embodiment)
A seventh example of the curing method will be described with reference to FIG. FIG. 13 shows a recording process in the case of recording one unit of page data so as to be adjacent to the closed data recording area shown in (3) of FIG. In step (1), the cure beam is irradiated so that the lower portion of the cure beam overlaps the upper end portion of the data recording area, and pre-curing is performed to secure the data recording area. In step (2), one unit of data is recorded in the data recording area. A cure beam is irradiated to the same position as in step (1), and post cure is performed in the data recording area.
　以上、示したように、既存のデータ記録領域の一部と重なるようキュアビームを照射すれば、任意の位置に、任意の記録単位にてページデータを追記することができる。よって、ホスト装置が指定する様々な記録データ量に応じたサイズの記録データ領域を確保することができ、ホログラムディスクを効率的に使用することができる。 As described above, if the cure beam is irradiated so as to overlap with a part of the existing data recording area, the page data can be additionally written in an arbitrary recording unit at an arbitrary position. Therefore, a recording data area having a size corresponding to various recording data amounts designated by the host device can be secured, and the hologram disc can be used efficiently.
　上記のキュア処理方法の第１例～第7例は、何れも、図６に示したディスク装置２において実施可能である。キュアビームの照射位置は、システム制御手段４が、サーボ手段７を介して、ディスク支持手段８を駆動することで調整する。ホログラムディスク３とキュア手段９との相対位置を調整できるため、任意の位置にキュアビームを照射することができる。これにより、キュアビームを既存のデータ記録領域の一部に重なるよう照射することができ、また、その重なり量も自在に調整することが可能である。よって、本実施例が提案する記録方法を実現することができ、データ記録領域を、ホスト装置１が指定する様々な記録データ量に応じたサイズとすること実現することができ、ホログラムディスクへ効率的かつ確実なデータの記録を達成することができる。 Any of the first to seventh examples of the above-mentioned cure processing method can be implemented in the disk device 2 shown in FIG. The irradiation position of the cure beam is adjusted by the system control means 4 driving the disk support means 8 via the servo means 7. Since the relative position between the hologram disk 3 and the curing means 9 can be adjusted, a cure beam can be irradiated at an arbitrary position. Thereby, the cure beam can be irradiated so as to overlap a part of the existing data recording area, and the amount of overlap can be adjusted freely. Therefore, the recording method proposed by the present embodiment can be realized, and the data recording area can be realized according to various recording data amounts designated by the host device 1 and can be efficiently used for the hologram disc. And reliable data recording can be achieved.
　上記の通り本実施例に従うキュア処理方法は、キュアビームサイズが固定でありながら、そのサイズより小さな領域のキュア処理が可能であることから、キュアビームサイズを変更することと同等の効果を簡素な構成のキュア手段により得ることができる。 As described above, the cure processing method according to the present embodiment has a fixed cure beam size and can cure a region smaller than the size. Therefore, the same effect as changing the cure beam size can be obtained. It can be obtained by a curing means of constitution.
　１・・・ホスト装置
　２・・・ディスク装置
　３・・・ホログラムディスク
　４・・・システム制御手段
　５・・・通信手段
　６・・・メモリ手段
　７・・・サーボ制御手段
　８・・・ディスク支持手段
　９・・・キュア手段
　１１・・・記録再生手段
　 DESCRIPTION OF SYMBOLS 1 ... Host apparatus 2 ... Disk apparatus 3 ... Hologram disk 4 ... System control means 5 ... Communication means 6 ... Memory means 7 ... Servo control means 8 ... Disk support Means 9 ... Cure means 11 ... Recording / reproducing means

Claims (16)

  1. ホログラフィを利用してディスクにデータを記録するディスク装置であって、
    ホスト装置と通信をする通信部と、
    前記通信部を介したホスト装置から要求に応じて、ディスク装置を制御する制御部と、ホスト装置が指定する記録データ量に応じたサイズのデータ記録領域を、データを記録するためのディスク内に論理的に確保する手段と、
    を有したことを特徴としたディスク装置。     A disk device for recording data on a disk using holography,
    A communication unit for communicating with the host device;
    In response to a request from the host device via the communication unit, a control unit that controls the disk device and a data recording area having a size corresponding to the amount of recording data specified by the host device are included in the disk for recording data. Means to ensure logically;
    A disk device characterized by comprising:
  2. 請求項１に記載のディスク装置であって、
    前記データ記録領域のアドレスと記録可能なデータ量とを前記ホスト装置に前記通信部を介して通知することを特徴としたディスク装置。     The disk device according to claim 1,
    A disk device, wherein the address of the data recording area and the recordable data amount are notified to the host device via the communication unit.
  3. 請求項１に記載のディスク装置であって、
    前記データ記録領域を論理的に確保した際に、同領域においてプリキュアを実施して前記データ記録領域を物理的にも確保する手段を有したことを特徴としたディスク装置。     The disk device according to claim 1,
    A disk device comprising means for pre-cure the data recording area when the data recording area is logically secured to physically secure the data recording area.
  4. 請求項１に記載のディスク装置であって、
    　前記データ記録領域にデータを記録する際に、同領域においてプリキュアを実施した上で、同領域にデータを記録する手段を有したことを特徴としたディスク装置。     The disk device according to claim 1,
    A disk device comprising means for recording data in the data recording area after performing pre-cure in the data recording area.
  5. 請求項１に記載のディスク装置であって、
    前記データ記録領域に前記ホスト装置から記録を要求されたデータを全て記録した際に前記データ記録領域においてポストキュアを実施する手段を有したことを特徴としたディスク装置。     The disk device according to claim 1,
    A disk apparatus comprising: means for performing post-cure in the data recording area when all data requested to be recorded from the host apparatus is recorded in the data recording area.
  6. 請求項１に記載のディスク装置であって、
    前記データ記録領域の前記ホスト装置からクローズ要求を受けた際に、前記データ記録領域においてポストキュアを実施する手段を有したことを特徴としたディスク装置。     The disk device according to claim 1,
    A disk device comprising means for performing post-cure in the data recording area when a close request is received from the host device for the data recording area.
  7. 請求項６に記載のディスク装置であって、
    前記データ記録領域の前記ホスト装置からクローズ要求を受けた際に、同領域のクローズ処理の完了を通知し、その後、同領域においてポストキュアを実施する手段を有したことを特徴としたディスク装置。     The disk device according to claim 6, wherein
    A disk device comprising means for notifying completion of the close processing of the area when a close request is received from the host device for the data recording area and then performing post-cure in the area.
  8. ホログラフィを利用してディスクにデータを記録するディスク装置に適用するためのディスク記録方法であって、
    ディスク装置のホスト装置が指定する記録データ量に応じたサイズのデータ記録領域を、データを記録するためのディスク内に論理的に確保することを特徴としたデータ記録方法。     A disk recording method for applying to a disk device that records data on a disk using holography,
    A data recording method characterized in that a data recording area having a size corresponding to a recording data amount designated by a host device of a disk device is logically secured in a disk for recording data.
  9. 請求項８に記載のディスク記録方法であって、
    前記データ記録領域のアドレスと記録可能なデータ量とを前記ホスト装置に通知することを特徴としたディスク記録方法。     The disk recording method according to claim 8, comprising:
    A disk recording method comprising: notifying the host device of an address of the data recording area and a recordable data amount.
  10. 請求項８に記載のディスク記録方法であって、
    前記データ記録領域を論理的に確保した際に、同領域においてプリキュアを実施して前記データ記録領域を物理的にも確保することを特徴としたディスク記録方法。     The disk recording method according to claim 8, comprising:
    A disk recording method, wherein when the data recording area is logically secured, pre-cure is performed in the same area to physically secure the data recording area.
  11. 請求項８に記載のディスク記録方法であって、
    前記データ記録領域にデータを記録する際に、同領域においてプリキュアを実施した上で、同領域にデータを記録することを特徴としたディスク記録方法。     The disk recording method according to claim 8, comprising:
    A disk recording method, wherein when data is recorded in the data recording area, precuring is performed in the same area and then data is recorded in the same area.
  12. 請求項８に記載のディスク記録方法であって、
    前記データ記録領域に前記ホスト装置から記録を要求されたデータを全て記録した際に前記データ記録領域においてポストキュアを実施することを特徴としたディスク記録方法。     The disk recording method according to claim 8, comprising:
    A disk recording method, wherein post-cure is performed in the data recording area when all data requested to be recorded by the host device is recorded in the data recording area.
  13. 請求項８に記載のディスク記録方法であって、
    前記データ記録領域の前記ホスト装置からクローズ要求を受けた際に、前記データ記録領域においてポストキュアを実施することを特徴としたディスク記録方法。     The disk recording method according to claim 8, comprising:
    A disk recording method, wherein a post-cure is performed in the data recording area when a close request for the data recording area is received from the host device.
  14. 請求項１３に記載のディスク記録方法であって、
    前記データ記録領域の前記ホスト装置からクローズ要求を受けた際に、同領域のクローズ処理の完了を通知し、その後、同領域においてポストキュアを実施することを特徴としたディスク記録方法。     The disk recording method according to claim 13, comprising:
    When receiving a close request from the host device for the data recording area, the disk recording method is characterized in that the completion of the close processing of the area is notified, and then postcure is performed in the area.
  15. 請求項１０乃至請求項１４のいずれかに記載のディスク記録方法であって、
    プリキュアまたはポストキュアを実施する際に、キュアビームの一部が他のデータ記録に重なるようキュア処理を実施することを特徴としたディスク記録方法。     The disk recording method according to any one of claims 10 to 14,
    A disc recording method comprising performing a curing process so that a part of a curing beam overlaps another data recording when performing pre-cure or post-cure.
  16. ホログラフィを利用してディスクにデータを記録するディスク装置であって、
    ホスト装置と通信をする通信部と、
    ディスクにプリキュアを行うプリキュア部と、
    プリキュア部がプリキュアした領域にデータを記録する記録部と、
    前記記録部が記録した領域にポストキュアを行うポストキュア部と、
    前記通信部が受信するホストからの要求に応じて、前記プリキュア部と、前記記録部と、前記ポストキュア部とを制御するコンとローラと、
    を有し、
    前記コンとローラは、前記通信部が受信したホストからの要求に応じて論理的な記録領域確保を行った後、前記プリキュア部がプリキュアすることで物理的な記録領域確保を行うように制御する、
    ディスク装置。     A disk device for recording data on a disk using holography,
    A communication unit for communicating with the host device;
    A pre-cure section for pre-cure the disc,
    A recording unit for recording data in a pre-cured area by the precure unit;
    A post-cure unit that performs post-cure on the area recorded by the recording unit;
    In response to a request from the host received by the communication unit, a controller and a roller for controlling the pre-cure unit, the recording unit, and the post-cure unit,
    Have
    The controller and the controller perform control so that a physical recording area is secured by pre-curing the pre-curing unit after securing a logical recording area in response to a request from the host received by the communication unit. ,
    Disk unit.
PCT/JP2013/060423 2013-04-05 2013-04-05 Disk device corresponding to hologram disk, and disk recording method WO2014162581A1 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002170343A (en) * 2000-11-29 2002-06-14 Sanyo Electric Co Ltd Data recorder
JP2005353243A (en) * 2004-06-14 2005-12-22 Toshiba Corp Optical disk, recording method of optical disk, and optical disk recording apparatus
WO2006093196A1 (en) * 2005-03-02 2006-09-08 Matsushita Electric Industrial Co., Ltd. Holographic optical information recording/reproducing device and holographic optical information recording/reproducing method
JP2007179601A (en) * 2005-12-27 2007-07-12 Hitachi Ltd Information recording method and information reproducing method
JP2007534016A (en) * 2004-04-16 2007-11-22 ディーシーイー アプリリス インコーポレーテッド Calibration of holographic data storage system using holographic media calibration mechanism
JP2009043369A (en) * 2007-08-10 2009-02-26 Sony Corp Recording apparatus and recording method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002170343A (en) * 2000-11-29 2002-06-14 Sanyo Electric Co Ltd Data recorder
JP2007534016A (en) * 2004-04-16 2007-11-22 ディーシーイー アプリリス インコーポレーテッド Calibration of holographic data storage system using holographic media calibration mechanism
JP2005353243A (en) * 2004-06-14 2005-12-22 Toshiba Corp Optical disk, recording method of optical disk, and optical disk recording apparatus
WO2006093196A1 (en) * 2005-03-02 2006-09-08 Matsushita Electric Industrial Co., Ltd. Holographic optical information recording/reproducing device and holographic optical information recording/reproducing method
JP2007179601A (en) * 2005-12-27 2007-07-12 Hitachi Ltd Information recording method and information reproducing method
JP2009043369A (en) * 2007-08-10 2009-02-26 Sony Corp Recording apparatus and recording method

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