WO2014112028A1 - Optical information recording and playback device, optical information recording and playback system, and optical information recording and playback method - Google Patents

Abstract

The objective of the present invention is, without unnecessarily wasting or destroying a recording area of an optical information recording medium which is hologram recording material, to avoid medium destruction by way of erroneous handling of media. The present invention is characterized in being an optical information recording and playback device which records once, records data as a hologram upon an optical information recording medium which is capable of a plurality of counts of playback, and plays back data from the optical information recording medium, the device being provided with a laser source which emits a beam, a seek operation verification unit which verifies that a seek operation has completed, and a light emission control unit which controls irradiating the beam upon the optical information recording medium; wherein the light emission control unit mounts the optical information recording medium onto the optical information recording and playback device, and then controls irradiation of the beam so that the area initially irradiated by a playback wavelength or a recording wavelength by the optical information recording and playback device is a predetermined area of the optical information recording medium, and the predetermined area is an area capable of recording data.

Description

Optical information recording / reproducing apparatus, optical information recording / reproducing system, and optical information recording / reproducing method

The present invention relates to an apparatus, system, and method for recording and reproducing information on a recording medium using holography.

Businesses, government offices, SOHO (Small Office / Home Office), and individuals are also increasingly handling information on electronic data, and media for storing large amounts of information are becoming indispensable. On the other hand, “Green IT (Information Technology)” is a keyword and there is a growing tendency to introduce devices with lower power consumption to protect the global environment. Under such circumstances, optical discs require almost no power to hold information, and technological development aimed at increasing capacity is being actively pursued as represented by BD (Blu-ray Disc). It is attracting attention as a medium for storing the large-capacity information.
In addition, library devices using a plurality of optical discs and archive devices for the purpose of backing up electronic data have come out in the world, and inventions for solving the problems have been made.
For example, Japanese Patent Laid-Open No. 2011-253588 (Patent Document 1) states that “the management information of the optical disc is normally held in a non-volatile recording medium such as a flash memory or SSD, and the management information is written to the optical disc at the time of ejecting the optical disc. The management information of a plurality of optical disks can be efficiently managed without writing the management information on the optical disk every time a defect occurs in the recording ”(summary).

Under these circumstances, the amount of information handled has increased year by year, and in the future, it is desired to increase the capacity to the same level as the HDD (Hard Disk Drive) capacity of 100 GB to 1 TB, which exceeds the BD even for optical discs. Densification technology by the method is being studied.

Currently, research on next-generation storage technology is underway, and hologram recording technology that records digital information using holography is attracting attention.

Hologram recording technology is a method in which signal light having page data information two-dimensionally modulated by a spatial light modulator is superimposed on reference light inside the recording medium, and the interference fringe pattern generated at that time is placed in the recording medium. This is a technique for recording information on a recording medium by causing refractive index modulation.

When reproducing the information, when the recording medium is irradiated with the reference light used for recording, the hologram recorded in the recording medium acts like a diffraction grating to generate diffracted light. This diffracted light is reproduced as the same light including the recorded signal light and phase information.

Regenerated signal light is detected two-dimensionally at high speed using a photodetector such as a CMOS or CCD. As described above, the hologram recording technique enables two-dimensional information to be recorded on the optical recording medium at once by one hologram and further reproduces this information. Since the page data can be overwritten, large-capacity and high-speed information recording / reproduction can be achieved.

Hologram recording materials include organic polymerized recording materials using photopolymers, and examples of recording media using photopolymers include WORM type media that cannot be erased or rewritten by additional recording alone. Can be mentioned. The main components of the hologram recording material are a monomer, a matrix, a photoinitiator, and the like, and the photoinitiator is excited by irradiating a beam having a specific wavelength. At this time, the monomer is photopolymerized according to the spatial distribution of the light intensity generated by the interference of the beam, and the generated polymer aggregates, whereby the interference fringes can be recorded as a refractive index grating.

The above-mentioned WORM type hologram recording medium is characterized in that data is not overwritten in a region where data is recorded in a region where all monomers are polymerized, even if a recording operation is subsequently performed in the region. is there.

JP 2011-253588 A

By the way, considering the realization of a library apparatus using a plurality of optical recording media for recording digital information using the holography, the following problems arise.

In Patent Document 1, the management information of the optical disk is normally held and managed by another means. However, the management information is managed by the other means due to a mistake in the disk of the internal mechanism of the library apparatus. In the case of a WORM type (Write Once Read Many) hologram recording medium, there is a problem when the management information of the existing optical disk is different from the optical disk actually loaded in the drive.

In the case of an optical disc typified by a conventional BD or DVD, even if the disc is mistaken and reproduced, the management information recorded on the disc is subsequently reproduced without destroying the disc. You can notice. However, in the case of a WORM type hologram recording medium, when an unrecorded area is reproduced due to its characteristics, the irradiation beam wavelength at the time of reproduction is the same as the beam wavelength at the time of recording. The excitation action of the photoinitiator occurs and this area cannot be used later. Therefore, it is necessary to perform data recording / reproduction after confirming whether the medium is desired. However, since it is impossible to inadvertently irradiate the reproduction beam to the medium even if it is confirmed whether it is a desired medium, it is difficult to confirm whether the target recording medium is the desired medium. In addition, there is a method of attaching a cartridge to the recording medium and identifying the recording medium by a nonvolatile memory or the like mounted on the cartridge, but this leads to an increase in cost at the time of creating the medium, and the medium becomes thicker. Has a drawback that a mechanism corresponding to the cartridge is newly required, and there is a demand for solving the problem without using the cartridge.

Accordingly, an object of the present invention is to provide an optical information recording / reproducing apparatus, an optical information recording / reproducing system, and an optical information recording / reproducing which can reduce unnecessary waste of a recording area of an optical information recording medium which is a hologram recording material of WORM type. Is to provide a method.

The above problem is solved by, for example, the invention described in the scope of claims.

According to the present invention, there is provided an optical information recording / reproducing apparatus, an optical information recording / reproducing system, and an optical information recording / reproducing method capable of reducing unnecessary waste of a recording area of an optical information recording medium that is a WORM type hologram recording material. Can be provided.

Schematic showing the Example of the medium determination processing flow of an optical information recording / reproducing system Schematic diagram showing an embodiment of an optical information recording / reproducing apparatus Schematic showing an embodiment of a pickup in an optical information recording / reproducing apparatus Schematic showing an embodiment of a pickup in an optical information recording / reproducing apparatus Schematic diagram showing an example of data existing in medium information management data managed by a central control unit in an optical information recording / reproducing apparatus and an example of an optical information recording medium storage unit Schematic showing an embodiment of the operation flow of the optical information recording / reproducing apparatus Schematic showing an embodiment of the operation flow of the optical information recording / reproducing apparatus Schematic diagram showing an embodiment of an optical information recording / reproducing system Schematic which shows an example of arrangement | positioning of ID information recording area of an optical information recording medium Schematic diagram showing an example of data existing in medium information management data managed by a central control unit in an optical information recording / reproducing apparatus and an example of an optical information recording medium storage unit Schematic showing the Example of the medium determination processing flow and ID information recording processing flow of an optical information recording / reproducing system Schematic showing another embodiment of the medium determination processing flow and ID information recording processing flow of the optical information recording / reproducing system Schematic diagram showing an example of the arrangement of ID information recording areas and medium management information recording areas of an optical information recording medium Schematic diagram showing an example of a medium determination processing flow, an ID information recording processing flow, and a processing flow when unmanaged ID information is acquired in the optical information recording / reproducing system Example of arrangement of ID information recording area and recording parameter adjustment area 1402 of optical information recording medium Schematic showing another embodiment of the medium determination processing flow and ID information recording processing flow of the optical information recording / reproducing system

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 2 is a block diagram showing a recording / reproducing apparatus of an optical information recording medium for recording and / or reproducing digital information using holography.

The optical information recording medium 1 is a medium made of a photopolymer or the like, and is a WORM (Write Once Read Many) medium that supports recording once and reproducing a plurality of times.

The optical information recording / reproducing device 10 is connected to an external control device 91 via an input / output control circuit 90. In the case of recording, the optical information recording / reproducing apparatus 10 receives the information signal to be recorded from the external control device 91 by the input / output control circuit 90. When reproducing, the optical information recording / reproducing apparatus 10 transmits the reproduced information signal to the external control apparatus 91 by the input / output control circuit 90.

The optical information recording / reproducing apparatus 10 includes a pickup 11, a cure optical system 13, a disk rotation angle detection optical system 14, a rotation motor 50, and a stage mechanism 51. The optical information recording medium 1 is rotated by the rotation motor 50. The stage mechanism 51 can move the recording medium in the radial direction.

The pickup 11 plays a role of irradiating the optical information recording medium 1 with reference light and signal light and recording digital information on the recording medium using holography. At this time, the information signal to be recorded is sent by the controller 89 to the spatial light modulator in the pickup 11 via the signal generation circuit 86, and the signal light is modulated by the spatial light modulator.

In order for the optical information recording / reproducing apparatus 10 to irradiate the optical information recording medium 1 with a beam, the light source driving circuit 84 and the shutter control unit 87 are controlled via the light emission control unit 92, so that the reference light or the signal is picked up from the pickup 11. A light beam is emitted, and a shutter provided in the pickup 11 is opened so that the medium is irradiated with the beam.

When reproducing the information recorded on the optical information recording medium 1, the reference light emitted from the pickup 11 enters the optical information recording medium 1 under the control of the light emission control unit 92 and is reproduced by the reproduction reference light. The reproduced light to be reproduced is detected by a photodetector described later in the pickup 11, and the signal is reproduced by the signal processing circuit 85. The irradiation time of the reference light and the signal light irradiated on the optical information recording medium 1 can be adjusted by controlling the shutter opening / closing time of the shutter in the pickup 11 via the controller 89 and the light emission control unit 92.

The cure optical system 13 plays a role of generating a light beam used for pre-cure and post-cure of the optical information recording medium 1. Precure is a pre-process for exciting a medium material by irradiating a predetermined light beam in advance before irradiating a reference light and a signal light to a desired position when recording information at a desired position in the optical information recording medium 1 It is. Post-cure is a method of recording information at a desired position in the optical information recording medium 1 and then irradiating a predetermined light beam to make the additional recording impossible at the desired position to polymerize all the monomers in the region. It is a post process. Since the pre-cure and post-cure can be carried out using reference light or signal light emitted from the pickup 11, the cure optical system 13 may be replaced by the pickup 11.

The disk rotation angle detection optical system 14 is used to detect the rotation angle of the optical information recording medium 1. When adjusting the optical information recording medium 1 to a predetermined rotation angle, a signal corresponding to the rotation angle is detected by the disk rotation angle detection optical system 14, and a disk rotation motor control circuit is detected by the controller 89 using the detected signal. The rotation angle of the optical information recording medium 1 can be controlled via 88.

The stage control circuit 83 is used to control the movement of the optical information recording medium 1 in the radial direction, and controls the slide mechanism 51 that can slide the position of the optical information recording medium 1 in the radial direction. The optical information recording medium 1 can be moved to the position.

A predetermined light source driving current is supplied from the light source driving circuit 84 to the light sources in the pickup 11, the cure optical system 13, and the disk rotation angle detection optical system 14, and each light source emits a light beam with a predetermined light amount. Can do.

The seek operation confirmation unit 94 is a part that determines whether the position positioned by the disk rotation motor control circuit 88 and the stage mechanism 51 is a desired position, and is obtained from the disk rotation angle detection optical system 14 and the stage control circuit 83. Based on the information, it is determined whether the positioned location is correct.

By the way, the recording technology using the principle of angle multiplexing of holography tends to have a very small tolerance for the deviation of the reference beam angle.

Accordingly, a mechanism for detecting the deviation amount of the reference beam angle is provided in the pickup 11, a servo control signal is generated by the servo signal generation circuit 82, and the deviation amount is corrected via the servo control circuit 81. It is necessary to provide a servo mechanism for this purpose in the optical information recording / reproducing apparatus 10.

Further, the pickup 11, the cure optical system 13, and the disk rotation angle detection optical system 14 may be simplified by combining several optical system configurations or all optical system configurations into one.

FIG. 3 shows a recording principle in an example of a basic optical system configuration of the pickup 11 in the optical information recording / reproducing apparatus 10. The light beam emitted from the light source 301 passes through the collimator lens 302 and enters the shutter 303. When the shutter 303 is open, after the light beam passes through the shutter 303, the optical ratio of the p-polarized light and the s-polarized light becomes a desired ratio by the optical element 304 composed of, for example, a half-wave plate. After the polarization direction is controlled, the light is incident on a PBS (Polarization Beam Splitter) prism 305.

The light beam that has passed through the PBS prism 305 functions as signal light 306, and after the light beam diameter is expanded by the beam expander 308, the light beam passes through the phase mask 309, the relay lens 310, and the PBS prism 311 and passes through the spatial light modulator 312. Is incident on.

The signal light to which information is added by the spatial light modulator 312 reflects the PBS prism 311 and propagates through the relay lens 313 and the spatial filter 314. Thereafter, the signal light is condensed on the optical information recording medium 1 by the objective lens 315.

On the other hand, the light beam reflected from the PBS prism 305 functions as reference light 307 and is set to a predetermined polarization direction according to recording or reproduction by the polarization direction conversion element 316 and then galvano- lated via the mirror 317 and the mirror 318. Incident on the mirror 319. Since the angle of the galvanometer mirror 319 can be adjusted by the actuator 320, the incident angle of the reference light incident on the optical information recording medium 1 after passing through the lens 321 and the lens 322 can be set to a desired angle. In order to set the incident angle of the reference light, an element that converts the wavefront of the reference light may be used instead of the galvanometer mirror.

In this way, the signal light and the reference light are incident on the optical information recording medium 1 so as to overlap each other, whereby an interference fringe pattern is formed in the recording medium, and information is recorded by writing this pattern on the recording medium. To do. In addition, since the incident angle of the reference light incident on the optical information recording medium 1 can be changed by the galvanometer mirror 319, recording by angle multiplexing is possible.

Hereinafter, in holograms recorded in the same area with different reference beam angles, holograms corresponding to each reference beam angle are called pages, and a set of pages angle-multiplexed in the same area is called a book. .

FIG. 4 shows a reproduction principle in an example of a basic optical system configuration of the pickup 11 in the optical information recording / reproducing apparatus 10. When reproducing the recorded information, the reference light is incident on the optical information recording medium 1 as described above, and the light beam transmitted through the optical information recording medium 1 is reflected by the galvanometer mirror 324 whose angle can be adjusted by the actuator 323. By doing so, the reproduction reference light is generated.

The reproduction light reproduced by the reproduction reference light propagates through the objective lens 315, the relay lens 313, and the spatial filter 314. Thereafter, the reproduction light passes through the PBS prism 311 and enters the photodetector 325, and the recorded signal can be reproduced. As the photodetector 325, for example, an image sensor such as a CMOS image sensor or a CCD image sensor can be used. However, any element may be used as long as page data can be reproduced.

FIG. 6 shows an operation flow of recording and reproduction in the optical information recording / reproducing apparatus 10. Here, a flow relating to recording / reproduction using holography in particular will be described.

6a shows an operation flow until information is recorded on the optical information recording medium 1, and FIG. 6b shows an operation flow until information recorded on the optical information recording medium 1 is reproduced.

As shown in FIG. 6A, the operation flow until information is recorded is first binary data received by recording data (611), and information corresponding to the data is added to the error correction code via the signal generation circuit 86. Converted into converted two-dimensional data and sent to the spatial light modulator in the pickup 11.

Thereafter, in the seek operation (613), the stage control circuit 82 and the disk rotation control circuit 88 are controlled so that the positions of the pickup 11 and the cure optical system 13 are positioned at predetermined positions on the optical information recording medium 1 and The rotary motor 50 is operated.

Thereafter, the seek operation confirmation unit 94 confirms the normal completion of the seek, pre-cure a predetermined area using the light beam emitted from the cure optical system 13 or the pickup 11 (614), and the reference light and signal emitted from the pickup 11 Data is recorded using light (615).

After recording the data, post cure is performed using the light beam emitted from the cure optical system 13 or the pickup 11 (616). Data may be verified as necessary.

The operation flow until the recorded information is reproduced is as shown in FIG. 6B. First, in the seek operation (621), the stage control circuit 82 and the disc rotation control circuit 88 are controlled, and the position of the pickup 11 is recorded as optical information. The stage mechanism 51 and the rotary motor 50 are operated so as to be positioned at a predetermined position of the medium 1.

Thereafter, the seek operation confirmation unit 94 confirms the completion of seek normality, the reference light is emitted from the pickup 11, and the information incident on the photodetector 325 in the pickup 11 is converted into data by the signal generation circuit 86. Information recorded on the information recording medium is read (622), and reproduction data is transmitted (613).

FIG. 7 is a block diagram showing an optical information recording / reproducing system having the optical information recording / reproducing apparatus 10 and the optical information recording medium 1. The optical information recording / reproducing system 700 uses one or more optical information recording / reproducing apparatuses 10 (in this example, the optical information recording / reproducing apparatus A to the optical information recording / reproducing apparatus C), and is stored in the optical information recording medium storage unit 704. This is a system for recording or reproducing data on or from a plurality of optical information recording media 1. The central control unit 701 has medium information management data 702. The medium information management data 702 includes data recorded on the medium in each of a plurality of optical information recording media handled by the optical information recording / reproducing system 700. And information for grasping in which area of the medium the data is recorded. The ID confirmation unit 705 is a part for confirming ID information described later, and confirms a match between the ID information acquired from the optical information recording medium 1 and the ID information selected by the central control unit 701 from the medium information management data 702. .

An example of the flow of recording data in the optical information recording / reproducing system 700 is shown. When the central control unit receives a data recording request from the external control unit 799, or when the central control unit 701 determines to perform data recording, the optical information recording medium 1 existing in the optical information recording medium storage unit 704 is stored. Data recording will be performed. The central control unit 701 grasps the data capacity of data transmitted from the external control means 799 to the central control unit 701 or data to be recorded stored in a memory (not shown) of the central control unit 701, and the medium information management data 702 The optical information recording medium 1 on which data is to be recorded is selected from the optical information recording medium storage unit 704. Further, the central control unit 701 selects the optical information recording / reproducing apparatus 10 that records data on the optical information recording medium 1. In this example, the optical information recording / reproducing apparatus A, the optical information recording / reproducing apparatus B, and the optical information recording / reproducing apparatus C are selected, and it is assumed that the optical information recording / reproducing apparatus A is selected. After that, the central control unit 701 controls the medium transport unit 703 to transport the selected optical information recording medium 1 from the optical information recording medium storage unit 704 to the optical information recording / reproducing apparatus A, and the optical information recording / reproducing apparatus A Is loaded with the optical information recording medium 1. In the subsequent data recording method, as shown in FIG. 6a, data to be recorded is first received (611), and information corresponding to the data is binarized with an error correction code added via a signal generation circuit 86. Converted into two-dimensional data and sent to the spatial light modulator in the pickup 11.

Thereafter, in the seek operation (613), the stage control circuit 82 and the disk rotation control circuit 88 are controlled so that the positions of the pickup 11 and the cure optical system 13 are positioned at predetermined positions on the optical information recording medium 1 and The rotary motor 50 is operated.

Thereafter, the seek operation confirmation unit 94 confirms the normal completion of the seek, pre-cure a predetermined area using the light beam emitted from the cure optical system 13 or the pickup 11 (614), and the reference light and signal emitted from the pickup 11 Data is recorded using light (615).

After recording the data, post cure is performed using the light beam emitted from the cure optical system 13 or the pickup 11 (616). Data may be verified as necessary.

An example of the flow of reproducing data in the optical information recording / reproducing system 700 is shown. An optical information recording medium existing in the optical information recording medium storage unit 704 when the central control unit receives a data reproduction request from the external control unit 799 or when the central control unit 701 determines to perform data reproduction. Data reproduction is performed for 1. The central control unit 701 locates the optical information recording medium 1 on which the data requested to be reproduced from the external control unit 799 or the data the central control unit 701 intends to reproduce is recorded with reference to the medium information management data 702, The optical information recording medium 1 to be reproduced is specified. The central control unit 701 selects the optical information recording / reproducing apparatus 10 that reproduces the optical information recording medium 1. In this example, it is assumed that the optical information recording / reproducing apparatus A is selected. After that, the central control unit 701 controls the medium transport unit 703 to transport the selected optical information recording medium 1 from the optical information recording medium storage unit 704 to the optical information recording / reproducing apparatus A, and the optical information recording / reproducing apparatus A Is loaded with the optical information recording medium 1. In the subsequent data reproduction method, as shown in FIG. 6b, first, the stage control circuit 82 and the disk rotation control circuit 88 are controlled by a seek operation (621), and the position of the pickup 11 is set to a predetermined value on the optical information recording medium 1. The stage mechanism 51 and the rotary motor 50 are operated so as to be positioned.

Thereafter, the seek operation confirmation unit 94 confirms the completion of seek normality, the reference light is emitted from the pickup 11, and the information incident on the photodetector 325 in the pickup 11 is converted into data by the signal generation circuit 86. Information recorded on the information recording medium is read (622), and reproduction data is transmitted (613). The reproduced data is transmitted to the external control means 799 via the central control unit 701.

Here, the characteristic points of the present embodiment will be described in detail. According to the present embodiment, when recording or reproduction is performed on the optical information recording medium 1, the optical information recording medium 1 that is the target of recording or reproduction is mistakenly loaded into the optical information recording / reproducing apparatus 10. In this case, it is possible to confirm that the medium has been mistaken without irradiating the unrecorded area of the optical information recording medium 1 unnecessarily with the reference light or the signal light and destroying the unrecorded area unnecessarily.

FIG. 8 shows an example of an optical information recording medium in the present invention. The example of FIG. 8 shows a schematic view of the optical information recording medium as viewed from above. In this example, the optical information recording medium is a circular medium, but this example is an example, and the medium need not be circular. In this embodiment, the optical information recording medium 1 is given unique information (hereinafter referred to as ID information) that can distinguish each of the plurality of optical information recording media 1, and a specific area of the optical information recording medium 1 is Record the ID information. The ID information recording method will be described later.

An area for recording ID information (hereinafter referred to as an ID information recording area) 801 is one area within the range of recording permitted by the optical information recording / reproducing apparatus, and the area is all optical information recording media. 1 at a common predetermined position. In the example of FIG. 8, the example in which the ID information recording area 801 is arranged on the inner peripheral side of the optical information recording medium 1 is shown, but this example is an example, and recording or reproduction can be performed by the optical information recording / reproducing system 700. If the optical information recording medium 1 that is a holographic recording material is in a position common to all optical information recording media 1 and satisfies the condition that recording is permitted in the optical information recording / reproducing apparatus, It may be arranged in any region of the optical information recording medium 1.

FIG. 5 shows an example of the data of the medium information management data 702 managed by the central control unit 701. The ID information is information added to the optical information recording medium 1 stored in the optical information recording medium storage unit 704, and is managed by the medium information management data 702.

An example of the medium information management data 702 is shown in the management data 500. As shown in the management data 500, the medium information management data 702 is a collection of data for managing each of the plurality of optical information recording media 1 stored in the optical information recording medium 704. ID information and medium management information are registered in association with each other.

The storage location is data that manages where the optical information recording medium storage location 704 is stored. The physical location where the corresponding optical information recording medium 1 is currently stored is shown.

ID information is ID information recorded in the ID information recording area. When the ID information is recorded on the optical information recording medium 1, the ID information recorded on the optical information recording medium is registered in order to associate the optical information recording medium 1 with the medium information management data 702.

The media management information is data that includes the area where the data recorded on the medium exists, the recording range, and information that identifies the contents of the data or file. In addition, the medium has defects such as bubbles. In the case of recording, a setting when the recording / reproducing is performed on the medium, a temperature environment, and the like may be included. The medium management information is updated as needed according to the medium usage status.

When the optical information recording medium 1 is recorded or reproduced via the central control unit 701, the optical information recording / reproducing system 700 updates the database corresponding to the optical information recording medium 1 on which the recording or reproduction has been performed.

Therefore, the central control unit 701 can manage a plurality of optical information recording media 1 stored in the optical information recording / reproducing system 700 through the medium information management data 702. That is, since the central control unit 701 can grasp the ID information of the optical information recording medium 1 loaded in the optical information recording / reproducing apparatus 10 from the medium information management data 702, the ID information recorded on the loaded optical information recording medium 1 Then, the ID information acquired from the medium information management data 702 is passed to the ID information confirmation unit 705 to check the ID information, thereby confirming whether the optical information recording medium 1 is a desired medium.

In this embodiment, the ID information is recorded on the optical information recording medium 1, and the data reproduced from the area where the ID information is recorded is compared with the ID information of the medium information management data 702, so that Make a decision.

The problem to be solved in the present embodiment is that the above-described configuration is provided, and after the optical information recording medium 1 is loaded into the optical information recording / reproducing apparatus 10, the area where the recording or reproducing beam is first irradiated is the ID information. This is solved by limiting to the recording area 801.

FIG. 1 shows an example of a sequence for determining whether the optical information recording medium 1 is an optical information recording medium 1 to be recorded or reproduced (hereinafter referred to as medium determination processing).

First, when the central control device 701 receives a request for data recording or reproduction from the external control means 799, or when the central control unit 701 determines that data recording or reproduction is to be performed, the data is recorded or reproduced. The target optical information recording medium 1 is selected from the optical information recording medium storage unit 704 with reference to the medium information management data 702. The selected optical information recording medium 1 controls the optical information recording medium transport unit 703 to load the optical information recording medium 1 into any one of the optical information recording / reproducing apparatuses 10 mounted in the optical information recording / reproducing system 700. (101). The optical information recording / reproducing apparatus 10 performs a seek operation and positions the pickup 11 so that the reference light is irradiated to the ID information recording area 801 of the optical information recording medium 1 (102). In the seek operation, the light source drive circuit 84 is not connected through the light emission control unit 92 without performing the positioning operation while irradiating the optical information recording medium 1 with the beam as in the conventional optical disc represented by DVD and BD. Alternatively, the shutter control circuit is controlled so that the optical information recording medium 1 is not irradiated with the beam.

Next, the seek operation confirmation unit 94 confirms that the recording or reproduction beam emitted from the pickup 11 is positioned at the position where the ID information recording area 801 is reliably irradiated (103). Here, at the time of the positioning, information representing the position in the medium, such as the medium radial position information or the medium rotation angle information, which is held in advance by the optical information recording / reproducing apparatus or the central control unit 701 is used. By using this information, the optical information recording medium 1 can be positioned at a common position.

Thereafter, the light emission control unit 92 opens the shutter via the shutter control unit 87 in order to irradiate the optical information recording medium 1 with the beam, and after the medium is loaded into the optical information recording / reproducing apparatus 10, the reference light or Irradiate the signal light beam. Therefore, the area where the beam of the wavelength at the time of reproduction or recording is first irradiated is the area of the ID information recording area 801 (104). At this time, in this example, a reference beam is irradiated to reproduce data in the ID information recording area 801 (105). As a result of reproducing the area, the acquired ID information is transmitted to the central control unit 701 via the input / output control circuit 90. Thereafter, the central control unit 701 passes the acquired ID information and the ID information of the medium selected with reference to the medium information management data 702 to the ID information confirmation unit 705, and the ID information confirmation unit 705 passes the two IDs. It is confirmed whether the information matches (106). If the ID information matches, it is determined that the currently loaded optical information recording medium 1 is the target medium, and then the requested recording or reproducing operation can be continued. If the IDs do not match, it is understood that the optical information recording medium 1 loaded in the optical information recording / reproducing apparatus 10 is not a target medium, and therefore the reproduction or recording operation of the selected optical information recording medium 1 is stopped. For example, the process when the ID information does not match can be performed (107).

In this way, by applying this embodiment, the optical information recording medium 1 is irradiated with a beam having a beam wavelength that promotes excitation of the recording medium after the optical information recording medium 1 is loaded in the optical information recording / reproducing apparatus. The first timing to perform the medium determination process and the first area where the optical information recording medium 1 is irradiated with the beam is the ID information recording area 801, and the other areas are irradiated with the beam unnecessarily to record the unrecorded area of the medium. It is possible to determine the medium mix-up without destroying it.

FIG. 10 shows a sequence for recording the ID information on the optical information recording medium 1 (hereinafter referred to as ID information recording process). The ID information is recorded immediately when the medium determination process is performed in an unrecorded area where no ID information is recorded. Therefore, the ID information recording process is a sequence added to the medium determination process.

The reason why ID information is immediately recorded when the ID information recording area is an unrecorded area after the medium determination process is performed will be described. If no ID information is recorded in (1001) of the medium determination process, the ID information recording area is an unrecorded area. However, the ID information recording area 801 is irradiated with a reference beam laser beam for reproduction when the medium determination process is performed, and the ID information recording area 801 is in an excited state of the initiator in the medium material. . If this area is left as it is, the photopolymerization of the medium material proceeds, and there is a possibility that data cannot be recorded in this area. Even if the data can be recorded, the recording quality cannot be guaranteed, and it is impossible to record data with stable recording quality. Therefore, in the present invention, the ID information is recorded in the ID information recording area 801 immediately within the time when the monomer in the area is not polymerized by utilizing the excitation action of the initiator by reproducing the ID information recording area 801.

As an example, after the ID information recording area 801 is reproduced, seek processing is not performed on other areas, the pickup 11 is controlled, the reference light and the signal light are irradiated to the ID information recording area 801, and the recording operation is started. good. According to the inventor's study, the time delay from the execution of the ID information reproduction process to the recording of the ID information when the ID information is not recorded is about 10 minutes. However, since the time depends on the components in the medium material of the optical information recording medium 1, it is better to carry out earlier after performing the medium determination process in order to perform stable recording.

However, if the time delay until recording ID information is experimentally determined in advance and known, for example, the time delay until ID information recording is used to adjust the recording parameters for recording the ID information with high quality. May be implemented in another area. Recording parameter adjustment refers to, for example, adjustment of the beam exposure time during data recording, adjustment of the wavelength of the recording beam, adjustment of the reference light angle, etc., and actual recording is performed on one area of the optical information recording medium. This refers to the process of checking and optimally adjusting the recording parameters. At this time, as shown in FIG. 14, it is efficient to perform the recording parameter adjustment in an area close to the ID information recording area 801. Pre-curing is performed to excite the initiator of the recording material before recording, and post-curing is performed after the recording to polymerize the monomer in the recording area. For example, ID information is recorded in the irradiation range 1401 of the curing light source. If the area 801 and the recording parameter adjustment area 1402 are included, the beam irradiation for the pre-cure and the post-cure is sufficient, so that the efficiency is high.

By taking the above measures, even when the ID information recording area 801 is not recorded, the ID information recording area 801 can be used as an original area without being destroyed. .

The contents will be described with reference to the processing flow of FIG. 10. To record the ID information, after performing the medium determination process (1001), if the ID information recording area 801 is not recorded, the optical information recording / reproducing is first performed. The central control unit 701 creates unique ID information to be recorded on the optical information recording medium 1 loaded in the apparatus 10 (1002). After creating the ID information, the light emission control unit 92 permits the medium to be irradiated with the beam of the reference light and the signal light, irradiates the medium with the beam during recording, and stores the ID information in the ID information recording area 801. It is recorded as data (1003). Thereafter, the central control unit 701 additionally registers ID information in the management data of the loaded optical information recording medium 1 in the medium information management data 702 (medium information management data registration process (1004)).

A flow of adding ID information to the medium information management data 702 will be described with reference to FIG. In this example, as an example, the optical information recording / reproducing system 700 is a system capable of storing ten optical information recording media 1, and ten optical information recording media 1 are stored in the optical information recording medium storage unit 704. And

For example, when the optical information recording media 903 and 907 stored in the medium storage location C and the media storage location G of the optical information recording media storage unit 704 shown in FIG. 9 are unused optical information recording media, the media information management data Referring to 900, the medium ID and the medium management information are not yet registered in the optical information recording media 903 and 907 stored in the medium storage location C and the medium storage location G. Thereafter, when the optical information recording medium 903 is loaded into the optical information recording / reproducing apparatus 10 for data recording, the medium determination process is performed, and the ID information recording process is performed because no ID information is recorded. The Here, the ID information created by the central control unit 701 is registered in the data of the medium storage location C of the medium information management data 900. At the same time, the management information in the state where the ID information is recorded is registered in the medium management information of the data in the medium storage location C. The process is a medium information management data registration process (1004). The medium information management data after performing the medium information management data registration process (1004) is as shown in 911. In the future, each time a recording operation is performed on the optical information recording medium 1 with the ID information 9, the management information 9 is updated. By recording ID information on the optical information recording medium 1 in this way, the optical information recording medium 1 and the medium information management data 702 managed by the central control unit 701 can be linked.

By implementing the above-described contents, it is possible to prevent medium mix-up and avoid destruction of the medium without unnecessarily wasting the recording area of the optical information recording medium, which is a WORM type hologram recording material. It becomes.

FIG. 11 shows another embodiment of the medium determination process and the ID information recording process described in the first embodiment. FIG. 11 shows the medium determination process and the ID information recording process together. In the present embodiment, the optical information recording medium 1 is loaded in the optical information recording / reproducing apparatus 10 and the same as in the first embodiment until the pickup 11 is positioned in the ID information recording area 801. Thereafter, the ID is recorded in the ID information recording area 801. The process proceeds to ID information recording processing for recording information. Next, a medium determination process is performed to determine whether the ID information acquired by reproducing the ID information recording area 801 matches the desired ID information.

When performing the ID information recording process, the central control unit 701 creates new ID information that does not exist in the medium information management data 702, and records the new ID information. If the optical information recording medium 1 in which ID information is already recorded in the ID information recording area 801 is loaded, the data will not be overwritten even if the recording operation is performed in the ID recording area 801. The ID information that has already been recorded in the process of reproducing the information can be acquired. In the case of an unused optical information recording medium 1, ID information can be recorded in the ID recording area 801 at the timing when the ID information is recorded.

Next, ID information confirmation unit 705 confirms the acquired ID information. Here, it is confirmed (1101) whether or not the acquired ID information matches the ID information instructed to be recorded by the central control unit 701. If they match, it is confirmed that the medium is an unused medium. The medium management information of the optical information recording medium 1 is added to the data 702 together with the ID information. If the ID information does not match the ID information recorded and instructed by the central control unit 701 this time, a search is made for a match with any of the ID information in the medium information management data 702 (1102). Actually, when the central control 701 loads the optical information recording medium 1 into the optical information recording / reproducing apparatus 10, it is loaded after confirming the medium information management data 702. Therefore, the ID information of the medium to be loaded It is sufficient to confirm that the ID information of the optical information recording medium 1 to be loaded matches the ID information acquired at the time of reproduction.

When implemented in this embodiment, when the optical information recording medium 1 is loaded into the optical information recording / reproducing apparatus, the medium on which the ID information is recorded, even if it is an unused medium on which no ID information is recorded. However, it is possible to record the ID information and confirm the ID information in the same sequence without dividing the case, and the flow after the optical information recording medium 1 is loaded into the optical information recording / reproducing apparatus 10 is halfway. There is an advantage that can be realized. For example, only when there is a high possibility that the optical information recording medium 1 to be used next time is an unused medium, the present embodiment is preferable because the possibility of recording ID information is high.

FIG. 12 shows an example in which another specific area is provided in addition to the ID information recording area 801 in the optical information recording medium 1. Reference numeral 1201 denotes an area for recording medium management information of the optical information recording medium 1 shown in FIG. 5 and is referred to as a medium management information recording area 1201. The example of FIG. 12 shows a schematic view of the optical information recording medium as viewed from above. In this example, the optical information recording medium is a circular medium, but this example is an example, and the medium need not be circular. In the example of FIG. 12, the example in which the medium management information recording area 1201 is arranged on the outer peripheral side of the optical information recording medium 1 is shown, but this example is an example and is common to all the optical information recording media 1. Any area of the optical information recording medium 1 may be used as long as it satisfies the condition that the area is a position and recording is permitted by the optical information recording / reproducing apparatus 10.

By using the medium management information recorded in the medium management information recording area 1201, the performance of the optical information recording / reproducing system 10 shown in the first or second embodiment can be improved.

In the medium management information recording area 1201, the latest medium management information of the medium information management data 702 updated as needed is recorded. Therefore, if the medium management information is recorded in the medium management information recording area 1201, what kind of data is recorded on the medium by reproducing the medium management information recording area 1201. It is possible to grasp how these data are recorded on the medium.

For example, when a medium is taken out of the optical information recording / reproducing system 700 and the taken medium is handled by another optical information recording / reproducing system 700, the medium management information area 1201 of the taken out medium is reproduced. Management information can be acquired, and the medium can be managed and handled in another system.

Similarly, the optical information recording medium 1 recorded outside the optical information recording / reproducing system 700 can be handled. Further, the optical information recording medium 1 recorded by the optical information recording / reproducing system 700 is once taken out and managed outside the optical information recording / reproducing system 700, and is inserted into the optical information recording / reproducing system 700 again when necessary. Even when the above is considered, the medium information management data 702 need not hold the medium management information of the medium while the medium is taken out, and may be deleted once. Thereby, it is not necessary to increase the finite memory capacity of the medium information management data 702 unnecessarily, and the medium information management data 702 can be used with a limited capacity.

Since the medium management information recording area 1201 is a predetermined one area in the optical information recording medium, the medium management information recorded in the medium management information recording area 1201 matches the actual recording state of the optical information recording medium. In addition, it is preferable that the latest medium management information of the optical information recording medium 1 is recorded at the timing of recording the medium management information when no additional data is added to the optical information recording medium 1 in the future. That is, the optical information recording medium 1 in which the medium management information is recorded in the medium management information recording area 1201 may be handled as a reproduction-only medium.

FIG. 13 is an example in which the medium determination process and the ID information recording process shown in FIG. 10 are further embodied using the medium management information recording area 1201 and the ID information mismatch process (107). For example, it is assumed that the optical information recording medium 1 recorded by a system different from the optical information recording / reproducing system 700 is newly stored in the optical information recording medium storage unit 704 of the optical information recording / reproducing system 700. The central control unit 701 controls the optical information recording medium transport unit 703 to load the optical information recording medium 1 stored from the outside into the optical information recording / reproducing apparatus 10. Thereafter, the ID information recording area 801 is reproduced (105), and when the ID information is confirmed through the process (106) and the process (1001) via the ID information confirmation unit 705, it is reproduced because it is an externally recorded medium. The acquired ID information does not match the ID information managed by the medium information management data 702. If the ID information does not match, a positioning process (1301) is performed in the medium management information area 1201, and after confirming the positioning (103), the medium management information recording area 1201 is reproduced (1302). It is confirmed whether or not data is recorded in the medium management information recording area (1303). If data is recorded in the medium management information recording area 1201, the area is reproduced to reproduce the loaded optical information recording medium. 1 medium management information can be acquired. The acquired information is newly registered in the medium information management data 702 (1004). As a result, the medium management information of the optical information recording medium 1 recorded externally can be grasped, and the data recorded on the optical information recording medium 1 can be managed and appropriately reproduced.

The medium management information recording area 1201 records the latest medium management information of the optical information recording medium 1 when no additional data is added to the optical information recording medium 1 in the future. When taking out from the reproduction system 700 to the outside, the medium management information is always recorded in the medium management information recording area 1201, and the management information is always recorded in the medium management information recording area 1201. Therefore, compatibility with the external system can be ensured and compatibility can be improved.

If the optical information recording medium 1 inserted from the outside is ID information whose ID information recorded in the ID information recording area 801 is not managed by the medium information management data 702, medium management is performed in the medium management information recording area 1201. If no information is recorded, the process proceeds to the non-supported medium handling process (1304). As an example of the non-supported medium handling process, the optical information recording medium is a medium that does not support both recording and playback. It is possible to report to the external control means 799 via the central control unit 701 and take measures to stop the recording and reproduction processing. It is also possible to report to the user that the medium is an unsupported medium by an external reporting means (not shown) included in the optical information recording / reproducing system 700 and prompt the user to replace the medium.

FIG. 15 is a flowchart showing an example of properly using the ID information recording process shown in FIG. 10 in the first embodiment and the ID information recording process shown in FIG. 11 in the second embodiment depending on the situation.

The ID information recording process of FIG. 10 is advantageous in terms of time when the ID information is already recorded on the medium, and the ID information recording process of FIG. 11 is applied to an unused medium on which no ID information is recorded. This is advantageous in terms of time.

As described above, since the state of the optical information recording medium storage unit 704 shown in FIG. 9 is known to the central control unit 701 via the medium information management data 702, the optical information recording / reproducing system 700 records or records data. When reproduction is to be performed, the optical information recording medium to be loaded into the optical information recording / reproducing apparatus is selected based on the medium information management data 702. Therefore, when information is to be reproduced from the optical information recording medium existing in the optical information recording / reproducing system 700, the ID information is already registered in the “medium ID” by taking the medium information management data 911 shown in FIG. 9 as an example. The selected optical information recording medium is selected. In such a case, the sequence of the ID information recording process shown in FIG. 10 is executed, and the sequence of reproducing the ID information recording area first is executed.

Conversely, when it is desired to record data on an unused optical information recording medium, an optical information recording medium to which at least ID information is not added in the medium information management data 702 is selected. Considering the medium information management data 911 shown in FIG. 9, since the medium storage location G is in a state where the ID information is not confirmed, the optical information recording medium in the medium storage location G is loaded and the recording sequence is executed. In this case, there is a high possibility that the medium is an unused medium, and the ID information recording process shown in FIG. 11 can be performed, and a sequence for first recording ID information in the ID information recording area can be performed. .

That is, the optical information recording / reproducing system 700 checks the medium information management data 702 for the optical information recording medium loaded in the optical information recording / reproducing apparatus (1501), and if the medium ID is already registered, If the ID information recording process of FIG. 10 is performed and the medium ID is not registered, it is determined whether the medium ID is registered so that the ID information recording process of FIG. 11 is performed (1502). Thus, the processing efficiency can be improved.

A useful example of how ID information is recorded in Examples 1 to 4 will be described. Since the ID information is important information for confirming whether the optical information recording medium 1 is a recording / reproducing medium after the optical information recording medium 1 is loaded in the optical information recording / reproducing apparatus 10, the recorded data I want to improve the reliability of

As an example of a method for improving the reliability of ID information, when ID information is recorded in the ID information recording area 801, the same ID information may be recorded on a plurality of pages subjected to angle multiplexing recording. As described above, it is possible to perform recording by angle multiplexing by changing the incident angle of the reference light incident on the optical information recording medium 1, but by reproducing data at a plurality of angles, the data reproduction reliability can be achieved. Can be improved. In the case of the optical information recording medium 1 composed of a photopolymer, the area contracts before and after recording data, and the angle of incidence of the reference light corresponding to the contracted medium is set during reproduction. Need to change. By recording data at a plurality of angles, even if one page cannot be reproduced, it is possible to cope by reproducing another page.

Furthermore, the diffraction efficiency of the hologram recorded on the page can be improved by setting the number of pages of the book in which the ID information is recorded to be smaller than the number of pages of the book in which normal data is recorded. it can. In the case of the optical information recording medium 1 composed of a photopolymer, photopolymerization starts at a portion where the light intensity is strong and the monomer is consumed in the brightness and darkness of the interference fringes by the reference light and the signal light, and a hologram is generated by polymerizing. To do. At this time, it has been found that a hologram having high diffraction efficiency can be generated by consuming a large amount of monomer. Since the number of monomers per unit volume is fixed depending on the medium, in order to record a hologram with strong diffraction efficiency, that is, a hologram with a wide reproduction margin, the number of recording holograms per unit volume is reduced and one hologram is generated. The number of monomers consumed can be increased.

Therefore, the ID information data in the ID information recording area 801 may be recorded with a smaller number of pages than a book in which normal data is recorded. In order to increase the number of monomers used per page and record a hologram with strong diffraction efficiency, the exposure time of the beam irradiated per page may be increased. Thus, by changing the recording data density per unit volume, the data reliability of the recorded ID information can be improved.

Although it has been described that the ID information is information that can identify each individual optical information recording medium 1, information may be further added to the ID information. As an example, it is effective to create ID information as described below.

For example, in addition to the information that can identify each medium in the ID information, it is preferable to add information that can identify the optical information recording / reproducing apparatus 10 that records the ID. For example, in the optical information recording / reproducing apparatus 700, a plurality of optical information recording / reproducing apparatuses 10 are mounted. However, there are variations in used parts and laser characteristics among the plurality of optical information recording / reproducing apparatuses 10. Each data recording condition may be affected by aging degradation. If the characteristics are captured in advance, it is possible to reproduce the data by optimizing the reproduction settings in accordance with the characteristics of the data recording state. The ID information is data that the central control unit 701 creates information that can be individually distinguished for each optical information recording / reproducing apparatus installed in the optical information recording / reproducing system 700 and is combined with information that can distinguish each individual optical information recording medium 1 You can create as.

As another example of adding other data other than the ID information to the ID information, a new effect is produced when the date / time information in which the ID information is recorded is also included in the ID information. The timing for recording the ID information on the optical information recording medium 1 is the timing at which the optical information recording medium 1 is irradiated with a recording or reproducing wavelength beam for the first time and the medium is used. By knowing the date and time when the medium was first used, the reliability of the data recorded on the optical information recording medium 1 can be grasped. The optical information recording medium 1 is said to have a period of about 50 years in which recorded data is guaranteed to be properly reproduced. If the initial recording date and time is included in the ID information, it is possible to know how long the reproduction guarantee period of the optical information recording medium 1 is, and when the guarantee period approaches, the optical information It is possible to take measures such as copying the data of the recording medium 1 to another optical information recording medium 1 or warning the user that the reproduction guarantee period is approaching.

In the above-described embodiment, an example is shown in which the optical information recording system 700 is configured. However, for example, even when the optical information recording / reproducing apparatus 10 that does not have the medium information management data 702 is used alone, The information recording / reproducing apparatus 10 can determine whether or not the loaded optical information recording medium 1 is an unused medium, and can effectively use the present invention.

For example, when the user loads the optical information recording medium 1 into the optical information recording / reproducing apparatus 10, the optical information recording / reproducing apparatus 10 performs the medium determination processing of (102) and (103), and ID information is recorded. It is possible to determine whether the medium is unused or not, and the result can be used effectively.

Further, medium information management data of the optical information system 700 is obtained by using medium management information of the optical information recording medium 1 that has been used by the optical information recording / reproducing apparatus 10 in a memory area (not shown) in the controller 89. By accumulating data as in 702, it is possible to control the embodiment according to the ID information.

In addition, this invention is not limited to the above-mentioned Example, Various modifications are included. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. Further, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

Also, the control lines and information lines indicate what is considered necessary for the explanation, and not all the control lines and information lines on the product are necessarily shown. Actually, it may be considered that almost all the components are connected to each other.

DESCRIPTION OF SYMBOLS 1 ... Optical information recording medium, 10 ... Optical information recording / reproducing apparatus, 11 ... Pickup,
13: Cure optical system,
14 ... Optical system for detecting the disk rotation angle,
50 ... Rotary motor, 51 ... Stage mechanism,
81. Servo control circuit,
82 ... Servo signal generation circuit, 83 ... Stage control circuit,
84... Light source driving circuit, 85... Signal processing circuit, 86.
87 ... Shutter control circuit, 88 ... Disc rotation motor control circuit,
89 ... Controller, 90 ... Input / output control circuit, 91 ... External control device,
92 ... Light emission control unit, 93 ... ID confirmation unit, 94 ... Seek operation confirmation unit 301 ... Light source, 303 ... Shutter, 306 ... Signal light, 307 ... Reference light,
308 ... Beam expander, 309 ... Phase mask
310 ... relay lens, 311 ... PBS prism,
312 ... Spatial light modulator, 313 ... Relay lens, 314 ... Spatial filter,
315 ... objective lens, 316 ... polarization direction conversion element, 320 ... actuator,
321 ... lens, 322 ... lens, 323 ... actuator,
324 ... Mirror, 325 ... Photo detector 700 ... Optical information recording / reproducing system 701 ... Central control unit 702 ... Media information management data 703 ... Optical information recording medium transport unit 704 ... Optical information recording medium storage unit 705 ... ID information confirmation unit 799 ... External control means

Claims (20)

An optical information recording / reproducing apparatus for recording data as a hologram on an optical information recording medium capable of recording once and reproducing a plurality of times, and reproducing data from the optical information recording medium,
A laser light source for emitting a beam;
A seek operation confirmation unit for confirming that the seek operation has been completed;
A light emission control unit that controls irradiation of the beam to the optical information recording medium,
After the optical information recording medium is loaded into the optical information recording / reproducing apparatus, the light emission control unit first has an area where the optical information recording / reproducing apparatus irradiates a reproduction wavelength or a recording wavelength beam. Controlling the irradiation of the beam to be a predetermined area of the medium;
The optical information recording / reproducing apparatus, wherein the predetermined area is an area where data can be recorded. The optical information recording / reproducing apparatus according to claim 1,
When the area where the optical information recording / reproducing apparatus first irradiates the beam having the reproduction wavelength or the recording wavelength is an unrecorded area, the light emission control unit performs recording within a predetermined time in the area irradiated with the beam. An optical information recording / reproducing apparatus for controlling the irradiation of the beam. An optical information recording / reproducing apparatus for recording data as a hologram on an optical information recording medium capable of recording once and reproducing a plurality of times, and reproducing data from the optical information recording medium,
A laser light source for emitting a beam;
A seek operation confirmation unit for confirming that the seek operation has been completed;
A light emission control unit for controlling irradiation of the beam to the optical information recording medium,
When the optical information recording / reproducing apparatus first irradiates the reproduction wavelength or the recording wavelength beam is an unrecorded area after the optical information recording medium is loaded into the optical information recording / reproducing apparatus, the light emission control unit Is an optical information recording / reproducing apparatus for controlling the irradiation of the beam so as to perform recording within a predetermined time in the region irradiated with the beam. The optical information recording / reproducing apparatus according to claim 2,
If the area where the optical information recording / reproducing apparatus first irradiates the beam is an unrecorded area after the optical information recording medium is loaded into the optical information recording / reproducing apparatus, the positioning to other areas is not performed. An optical information recording / reproducing apparatus in which data recording is performed on the first irradiated region. The optical information recording / reproducing apparatus according to claim 2,
The optical information recording medium has an adjustment area for adjusting the beam energy irradiated during recording,
The optical information recording is characterized in that the adjustment area and two areas where the optical information recording medium is first irradiated with a beam are disposed within a single irradiation range of a curing light source that irradiates the optical information recording medium. Playback device. The optical information recording / reproducing apparatus according to claim 1,
The light emission controller first irradiates a predetermined area to which the optical information recording / reproducing apparatus irradiates a beam during recording, and controls the irradiation of the beam so as to reproduce the predetermined area after the recording. An optical information recording / reproducing apparatus. The optical information recording / reproducing apparatus according to claim 2,
An ID information creating unit for creating ID information that can distinguish individual optical information recording media;
The optical information recording / reproducing apparatus, wherein the ID information created by the ID information creation unit is recorded in the region irradiated with the beam first. The optical information recording / reproducing apparatus according to claim 7,
Having medium information management data for managing the medium information of the optical information recording medium;
An optical information recording / reproducing apparatus, wherein the ID information and medium management information of an optical information recording medium on which the ID information is recorded are registered in medium information management data. The optical information recording / reproducing apparatus according to claim 7,
A second predetermined area different from the area for recording the ID information is defined as an area where data can be recorded,
First, when the reproduction data acquired from the area irradiated with the beam by the optical information recording / reproducing apparatus is ID information not registered in the medium information management data, the second predetermined area is reproduced. An optical information recording / reproducing apparatus. The optical information recording / reproducing apparatus according to claim 9,
The optical information is characterized in that the second predetermined area records data including information indicating the area where the data recorded on the optical information recording medium exists, the recording range, the data or the contents of the file. Recording / playback device. An optical information recording / reproducing system having one or more optical information recording / reproducing apparatuses according to claim 1,
An optical information recording medium storage unit for storing the optical information recording medium;
An optical information recording medium transport unit for transporting the optical information recording medium to the optical information recording / reproducing apparatus;
A control unit comprising medium information management data for controlling the optical information recording / reproducing apparatus and the optical information recording medium transport unit, and managing medium information of the optical information recording medium provided in the optical information recording medium storage unit; ,
An information collation unit for collating information unique to the optical information recording medium acquired from the optical information recording medium and information in the medium information management data;
An optical information recording / reproducing system, wherein ID information capable of distinguishing each of the optical information recording media is recorded in an area where the optical information recording / reproducing apparatus first irradiates a beam. The optical information recording / reproducing system according to claim 11,
An optical information recording / reproducing system, wherein the ID information and medium management information of the optical information recording medium on which the ID information is recorded are registered in the medium information management data. The optical information recording / reproducing system according to claim 11,
A second predetermined area different from the area for recording the ID information is defined as an area where data can be recorded,
First, when the reproduction data acquired from the area irradiated with the beam by the optical information recording / reproducing apparatus is ID information not registered in the medium information management data, the second predetermined area is reproduced. A characteristic optical information recording / reproducing system. The optical information recording / reproducing system according to claim 13,
The optical information is characterized in that the second predetermined area records data including information indicating the area where the data recorded on the optical information recording medium exists, the recording range, the data or the contents of the file. Recording / playback system. The optical information recording / reproducing system according to claim 11,
The ID information includes information capable of distinguishing individual optical information recording / reproducing apparatuses that record the ID information,
The optical information recording / reproducing apparatus loaded with the optical information recording medium changes the reproduction setting according to the characteristics of the optical information recording / reproducing apparatus that recorded the ID information after reproducing the ID information. Playback system. The optical information recording / reproducing system according to claim 11,
The ID information includes information on the date and time when the ID information was recorded, and the ID information is recorded.
When the reproduction guarantee period of the optical information recording medium that has reproduced the ID information approaches after the reproduction of the ID information, the data of the optical information recording medium that has approached the reproduction guarantee period is provided in the optical information recording medium storage unit. An optical information recording / reproducing system which is copied to an optical information recording medium. The optical information recording / reproducing system according to claim 11,
The optical information recording / reproducing system is characterized in that the ID information is angle-multiplexed and recorded in the predetermined area, and the same ID information is recorded on a plurality of angle-multiplexed pages. The optical information recording / reproducing system according to claim 11,
An optical information recording / reproducing system, wherein a data recording density per unit volume of the predetermined area in which the ID information is recorded is different from an area in which data other than the predetermined area is recorded. An optical information recording / reproducing method for recording data as a hologram on an optical information recording medium capable of recording once and reproducing a plurality of times, and reproducing data from the optical information recording medium,
A medium loading step of loading an optical information recording medium from the optical information recording medium storage unit into the optical information recording / reproducing apparatus;
A positioning step of positioning a pickup for irradiating a beam for recording or reproduction after the medium loading step in a desired area of the medium;
A positioning confirmation step for confirming whether positioning has been completed;
A beam irradiation step for irradiating a beam during recording or reproduction; and
A reproduction step of reproducing the recorded information recorded on the medium;
A recording step of recording information on the medium,
The positioning step is positioned in a predetermined area existing in an area where data of the optical information recording medium can be recorded,
The recording step is performed when the medium is unrecorded as a result of reproducing the area irradiated with the beam during reproduction in the beam irradiation step and reproducing the area irradiated with the beam during reproduction in the reproduction step. And recording the data in the unrecorded area within a predetermined time. The optical information recording / reproducing method according to claim 19,
The predetermined area existing in the area where the data of the optical information recording medium in the positioning step can be recorded is an ID information recording area in which ID information capable of distinguishing each optical information recording medium is recorded. ,
The beam irradiation step is a step of irradiating the medium with a beam during reproduction,
A reproducing step of reproducing information recorded on the optical information recording medium;
An ID information confirmation step of collating the reproduced ID information with the ID information acquired from the medium information management data;
An ID information creating step for creating ID information to be recorded;
A recording step for recording information on the medium;
Medium information management data for registering ID information and medium management information in which the recorded data of the optical information recording medium on which the ID information is recorded, the recording range, the data, or the contents of the file can be registered in the medium information management data A registration step,
In the reproduction step, the ID information recording area is reproduced,
When it is confirmed that no ID information is recorded on the optical information recording medium in the ID information confirmation step, ID information is created in the ID information creation step, and the created ID information is recorded in the recording step. Recording in the ID information recording area, recording the ID information on the optical information recording medium, and then performing the medium information management data registration step. In the medium information management data registration step, the recorded ID information and the optical information An optical information recording / reproducing method comprising registering medium management information of an information recording medium in the medium information management data.

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