WO2007046492A1 - Support, dispositif et procede d’enregistrement d’informations, dispositif et procede de reproduction d’informations et de fabrication de support d’enregistrement correspondant - Google Patents

Support, dispositif et procede d’enregistrement d’informations, dispositif et procede de reproduction d’informations et de fabrication de support d’enregistrement correspondant Download PDF

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Publication number
WO2007046492A1
WO2007046492A1 PCT/JP2006/320921 JP2006320921W WO2007046492A1 WO 2007046492 A1 WO2007046492 A1 WO 2007046492A1 JP 2006320921 W JP2006320921 W JP 2006320921W WO 2007046492 A1 WO2007046492 A1 WO 2007046492A1
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WIPO (PCT)
Prior art keywords
recording
information
layer
area
recording medium
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Application number
PCT/JP2006/320921
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English (en)
Japanese (ja)
Inventor
Tohru Kanegae
Masahiro Kato
Eisaku Kawano
Masahiro Miura
Kyusho Omori
Tatsuhiro Yone
Original Assignee
Pioneer Corporation
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Publication of WO2007046492A1 publication Critical patent/WO2007046492A1/fr

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Classifications

    • 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
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G11B7/00736—Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information
    • 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2403—Layers; Shape, structure or physical properties thereof
    • G11B7/24035—Recording layers
    • G11B7/24038—Multiple laminated recording layers
    • 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
    • G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
    • G11B2007/0009—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage
    • G11B2007/0013—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage for carriers having multiple discrete layers

Definitions

  • Information recording medium information recording apparatus and method, information reproducing apparatus and method, and information recording medium manufacturing apparatus and method
  • the present invention relates to an information recording medium such as a DVD (Digital Versatile Disc), a BD (Blu-ray Disc), and a CD (Compact Disc), and a DVD recorder for recording information on the information recording medium.
  • the present invention relates to a technical field of an information recording apparatus and method, a first information reproducing apparatus and method such as a DVD player for reproducing information from the information recording medium, and a manufacturing apparatus and method for manufacturing the information recording medium.
  • a recording type information recording medium such as CD-R (Compact Disc-Recordable), DVD-R, DVD-RW, and DVD + R
  • a recording type information recording medium such as CD-R (Compact Disc-Recordable), DVD-R, DVD-RW, and DVD + R
  • an information recording medium such as a multilayer type or dual layer type optical disc in which a plurality of recording layers are stacked or bonded on the same substrate is also used.
  • an information recording medium such as a multilayer type or dual layer type optical disc in which a plurality of recording layers are stacked or bonded on the same substrate is also used.
  • an information recording apparatus such as a DVD recorder that performs recording on such a dual-layer type, that is, a two-layer type optical disc, the front side as viewed from the laser light irradiation side (ie, closest to the optical pickup).
  • the recording laser beam By focusing the recording laser beam on the recording layer (referred to as “L0 layer” in the present application) located on the side). Record in rewritable format.
  • the recording layer referred to as “L1 layer” in this application as appropriate
  • L1 layer located on the far side of the L0 layer (that is, the side far from the optical pickup force) when viewed from the laser beam irradiation side through the L0 layer, etc.
  • an irreversible change recording method such as heating or a rewritable method.
  • a hybrid type optical disc having both physical characteristics has been proposed.
  • This hybrid type optical disc is (i) a physical that enables the additional recording and rewriting of recorded information, which is substantially the same as the above-mentioned recording type optical disc such as CD-R, DVD-R, or DVD-RW. Recording area that retains characteristics, and (ii) read-only optical discs such as CD-ROM and DVD-ROM It also has a read-only area that holds similar physical characteristics.
  • the first recording layer to the first recording layer in order from the side irradiated with laser light.
  • n is a natural number
  • a transflective film is provided.
  • a recording film such as a phase change recording film or a dye film
  • a recording film is laminated.
  • the apparent light reflectance from each recording layer that is, the light reflectance held by each recording layer alone (hereinafter referred to as “true light reflectance” or In addition to “pure light reflectivity”)
  • the laser light reaches each recording layer and is reflected, before reaching the photo-detector in the optical pickup (optical pickup).
  • the actual light reflectivity considering the effect of the light reflectivity of other recording layers that are transmitted is lower than the light reflectivity of the single-layer information recording medium.
  • the optical reflectivity of a multilayer rewritable information recording medium having a phase change recording film such as a DVD-RW is lower than that of a multilayer reproduction-only information recording medium! End up.
  • the multilayer information recording medium has substantially the same apparent light reflectance as described above in all the recording layers.
  • the circuit characteristics in this specification are based on the difference between the amount of light corresponding to the reflectance of the crystalline phase where no recording mark exists and the amount of light corresponding to the reflectance of the recording mark of the amorphous phase.
  • the start or end position of a recording area such as a data area of each recording layer in a multilayer information recording medium is used to optimize the recording capacity and simplify the recording / reproducing procedure.
  • Each recording layer is designed and manufactured to have the same position.
  • the innermost or outermost radial position of the recording area of the recording layer in a single-layer disc type information recording medium is the same for all information recording media of the same type and standard. Designed and manufactured to have the same radial position.
  • Patent Document 1 Japanese Unexamined Patent Publication No. 2000-311346
  • Patent Document 2 Japanese Patent Laid-Open No. 2001-23237
  • Patent Document 3 Japanese Unexamined Patent Publication No. 2003-6919
  • various information recording media having greatly different light reflectivities including, for example, a multilayer rewritable information recording medium having a relatively low apparent light reflectivity as described above
  • the various circuit characteristics in the above-described detection control circuit for controlling the optical detector are the same as those of conventional information recording media such as a single-layer DVD-ROM. It becomes necessary to change. Therefore, for example, a newly developed information recording medium such as a multilayer information recording medium having a low light reflectance can be appropriately recorded and reproduced by an information recording / reproducing apparatus compatible with the conventional information recording medium. This creates a technical problem that may not be possible.
  • the present invention has been made in view of, for example, the above-described conventional problems.
  • the present invention relates to a newly developed information recording medium such as a low-light reflectance and a multilayer rewritable information recording medium.
  • the information recording medium, the information recording apparatus and method, and the information reproducing apparatus and method that make it possible to record and reproduce the recorded information more appropriately and easily while maintaining compatibility with the related art.
  • An object of the present invention is to provide an information recording medium manufacturing apparatus and method.
  • the information recording medium of the present invention is a first recording layer (L0 layer) in which a first recording track capable of recording or reproducing a part of recorded information is formed by a laser beam. And one or a plurality of second recording layers (L1 layers) each formed with a second recording track capable of recording or reproducing each other part of the recorded information by a laser beam transmitted through the first recording layer.
  • the other layers of the second recording layer located on the first recording layer side of one of the plurality of second recording layers, and at least one of the first recording layers is specified
  • the recording layer is a specific region (filmless region) that retains a large light transmittance (optical characteristics) compared to the light transmittance in the recording region of the first recording layer and the second recording layer.
  • a pseudo first recording track in which the first recording track is simulated is formed.
  • the first recording track capable of recording a part of the recording information such as user data by the laser beam is provided in the first recording layer (L0 layer). Is formed in the first recording layer (L0 layer).
  • second recording tracks capable of recording the other parts of the recording information are formed by the laser light transmitted through the first recording layer.
  • the second recording layer and the first recording layer located on the first recording layer side of one of the plurality of second recording layers and the first recording layer.
  • the two specific recording layers have a specific area (area without film) that retains optical characteristics such as a large light transmittance as compared to the light transmittance in the first recording layer and the second recording layer.
  • management area in the opposite area (management area) that is opposed to the specific area (non-film area) of one of the plurality of second recording layers, (i) instead of the second recording track, (Ii)
  • a pseudo first recording track in which the first recording track is simulated is formed.
  • management information for managing the information recording medium can be recorded as the other part of the recording information.
  • the specific area (the non-film area) is the opposite area (the management area) that faces the specific area (the non-film area).
  • the management area the area that faces the specific area (the non-film area).
  • the apparent light reflectance is relatively low.
  • the structure may be substantially the same as that of a multilayer information recording medium.
  • optical properties such as apparent light reflectance in the opposing area (management area) are partially partially reflected in information recording media with a smaller number of recording layers. It is possible to make it approximately equivalent to the optical characteristics such as. Therefore, management information can be recorded on the pseudo first recording track formed in the opposite area (management area) as the other part of the recording information, and the management information can be recorded from the pseudo first recording track. It is reproducible.
  • recording information including various management information originally recorded in the recording area of the first recording layer is included in the plurality of second recording layers.
  • recording in the opposite area (management area) of one layer it is possible to perform recording and playback on a two-layer rewritable information recording medium with a relatively low apparent light reflectance.
  • a conventional information recording / reproducing device that does not support low reflection and conforms to the DVD standard, for example.
  • at least the opposing area (management area) of the second recording layer can be appropriately recorded and played back.
  • At least one of the recording film, the transflective film, and the reflective film is not formed.
  • the apparent light transmittance in the specific region can be appropriately increased (increased).
  • the recording track direction (spiral direction) is changed in the pseudo first recording track formed in the facing area (management area).
  • the opposing area (management) in one of the plurality of second recording layers is managed. It is possible to simulate the area more appropriately as if it were the recording area of the first recording layer in which various types of management information are recorded.
  • the light reflectance of the laser beam is reduced in the adjacent area adjacent to the facing area (management area).
  • an apparent area in one of the plurality of second recording layers and a normal recording area in each layer are apparent. It is possible to make the information recording device or the like recognize the difference in the above light reflectance continuously or smoothly.
  • the second recording track is not formed in the adjacent area adjacent to the facing area (management area) or address information is not held. Other recording tracks are formed.
  • address non-addressing in the opposing area in one of the plurality of second recording layers and the normal recording area in each of the layers is performed. For example, it is possible to more effectively prevent runaway of an optical pickup or the like provided in the information recording device without allowing the information recording device or the like to recognize the continuity.
  • an apparent area in one of the plurality of second recording layers and a normal recording area in each layer are apparent. It is possible to make the information recording device or the like recognize the difference in the above light reflectance continuously or smoothly based on the attribute of a predetermined recording area such as the lead-out area attribute.
  • the plurality of specific recording layers are the apparent light of the laser beam in an adjacent region adjacent to the facing region (management region). Arranged to reduce reflectivity.
  • an apparent area in one of the plurality of second recording layers and a normal recording area in each layer are apparent. It is possible to make the information recording device or the like recognize the difference in the above light reflectance continuously or smoothly. Specifically, it is more effective that the end portions of a plurality of specific recording layers have various influences, for example, as shadows or shadows, with respect to laser light that is irradiated to an adjacent region, for example, that retains a conical beam shape. It is possible to prevent it.
  • the first recording layer and the second recording layer are
  • the specific area (non-film area) and the counter area (management area) are arranged on the inner periphery of the information recording medium.
  • the first recording layer and the second recording layer are
  • the specific area (film-free area) and the counter area (management area) are arranged within a radius (35 mm) of the innermost peripheral area of the information recording medium.
  • various operations such as a recording operation based on, for example, the DVD standard can be performed more accurately and with high accuracy by, for example, an information recording apparatus described later.
  • the management information is recorded in advance by forming embossed pits in the facing area (management area).
  • the management information can be more appropriately recorded in the facing area based on various properties of the management information such as encryption information of the information recording medium.
  • the management information is recorded in one of the plurality of second recording layers that is positioned on the innermost side irradiated with the laser beam. It is done.
  • the management information can be recorded on the innermost recording layer that includes the reflective film instead of the semi-transmissive reflective film while maintaining the reproduction quality. Is possible.
  • the management information includes identification information (flag) indicating whether the specific area (filmless area) or the counter area (management area) exists. including.
  • an information recording apparatus described later can perform various operations including a recording operation based on the identification information more accurately and with high accuracy.
  • another layer of the second recording layer located on the opposite side of the first recording layer from one of the plurality of second recording layers. At least one of them has the specific region (region without film).
  • the apparent light transmission in the specific area is considered while taking into account the influence of light absorption, for example, by the other layers of the second recording layer located on the opposite side of the first recording layer.
  • the rate can be increased (increased) more appropriately.
  • At least one of the first recording layer and the second recording layer is a read-only recording layer having a read-only area.
  • An information recording apparatus of the present invention is an information recording apparatus for recording on the above-described invention of the information recording medium of the present invention (including various aspects), and a recording means for recording the recording information.
  • management information is acquired by an acquisition means such as an optical pickup.
  • an acquisition means such as an optical pickup.
  • the recording information is recorded based on the acquired management information by a recording unit such as an optical pickup.
  • recording information including various management information originally recorded in the recording area of the first recording layer is a plurality of second recording media.
  • recording cannot be performed on a two-layer rewritable information recording medium having a relatively low apparent light reflectance.
  • the information recording apparatus of the present invention can also adopt various aspects.
  • An information reproducing apparatus of the present invention is an information reproducing apparatus for reproducing the above-described information recording medium of the present invention (including various aspects), the reproducing means for reproducing the recorded information, Acquisition means for acquiring management information, and control means for controlling the reproduction means to reproduce the recording information based on the acquired management information.
  • management information is first acquired by an acquisition means such as an optical pickup, for example, in substantially the same manner as the information recording apparatus described above.
  • an acquisition means such as an optical pickup
  • the recording information is reproduced based on the acquired management information by a reproduction means such as an optical pickup.
  • recording information including various management information originally recorded in the recording area of the first recording layer includes a plurality of second recording information.
  • reproduction cannot be performed on a two-layer rewritable information recording medium having a relatively low apparent light reflectance.
  • the information reproducing apparatus of the present invention can also adopt various aspects.
  • a first embodiment according to the manufacturing apparatus of the present invention is a manufacturing apparatus for manufacturing an information recording medium (including various aspects) having the above-described specific region (without film) of the present invention, Mask layer adding means for adding a mask layer to form the specific region (no film) on the other recording layer of the second recording layer and one of the first recording layers.
  • removing means for removing the film by removing the mask layer from the recording layer.
  • the original plate corresponding to the groove shape of the groove track is prepared by the original plate creating means, for example, based on the spin coat of the photoresist.
  • the original plate is processed by the original plate processing means based on the laser power of the laser beam for laser cutting.
  • a stamper is created from the processed original plate based on the electric lamp by the stamper creating means.
  • the first and second recording layers are (injected) by the created stamper by a molding means such as an injection molding machine.
  • a mask layer is added to the portion corresponding to the specific area by the mask adding means to the molded first and second recording layers.
  • At least one of the recording film, the transflective film, and the reflective film is, for example, a sputtering process or a vapor deposition process. Is formed.
  • the masking layer is removed by the removing means, and the recording film, the dielectric film, and the semi-transmissive reflective film are removed along with the mask layer in a portion corresponding to the specific region.
  • one recording layer and one of the plurality of second recording layers are combined based on bonding or lamination, for example, a two-layer type Multi-layer information recording media such as are manufactured.
  • a specific area is formed by the recording area from which the mask layer has been removed, and the apparent light reflectance can be increased in the facing area facing the specific area.
  • a multilayer information recording medium having a specific area and a counter area is obtained. It becomes possible to manufacture more simply and with high accuracy.
  • the first embodiment of the information recording medium manufacturing apparatus of the present invention can also adopt various aspects.
  • a second embodiment of the manufacturing apparatus of the present invention is a manufacturing apparatus for manufacturing an information recording medium (including various aspects) having the above-described specific region (without film) of the present invention, At least one of a recording film, a transflective film, and a reflective film is formed on the other layer of the molded second recording layer and one of the first recording layers.
  • a removal means for removing the film by performing an etching process (dissolved with a removing solution) on one recording layer is provided.
  • an original plate is created by, for example, an original plate creating means in substantially the same manner as the first embodiment described above.
  • the original plate is processed by the original plate processing means based on the laser power of the laser beam for laser cutting.
  • a stamper is created from the processed original plate based on the electric power by the stamper creating means.
  • the first and second recording layers are (injected) molded by the created stamper by a molding means.
  • At least one of the recording film, the transflective film, and the reflective film is formed on one recording layer by a film forming unit, for example, a sputtering process or a vapor deposition process. Is deposited.
  • the film is removed by performing an etching process on the one recording layer to which the mask layer is added by the removing means.
  • one recording layer and one of the plurality of second recording layers are bonded based on bonding or lamination by, for example, a bonding unit, so that, for example, a two-layer type Multi-layer information recording media such as are manufactured.
  • a specific area is formed by the recording area to which the mask layer is added.
  • the apparent light reflectance can be increased.
  • a multilayer information recording medium having a specific area and a counter area can be manufactured more easily and with high accuracy.
  • the second embodiment of the information recording medium manufacturing apparatus of the present invention can also adopt various aspects.
  • An information recording method of the present invention is an information recording method in an information recording apparatus comprising recording means for recording on the above-described information recording medium of the present invention (including various aspects), wherein the management information is stored in the information recording apparatus. Based on the acquisition process to be acquired and the acquired management information! (Existing drive records along a pseudo first recording track), and controls the recording means to record the recording information A control step.
  • the information recording method of the present invention can also adopt various aspects.
  • the information reproducing method of the present invention is an information reproducing method in an information reproducing apparatus comprising reproducing means for reproducing the above-described information recording medium of the present invention (including various aspects), wherein the management information is An acquisition step of acquiring, and a control step of controlling the reproducing means to reproduce the recorded information based on the acquired management information.
  • the information reproduction method of the present invention can also adopt various aspects.
  • the first embodiment according to the manufacturing method of the present invention is a manufacturing method in a manufacturing apparatus for manufacturing the above-described information recording medium (including various aspects) having the specific region (without film) of the present invention.
  • the first embodiment of the manufacturing method of the present invention can also adopt various aspects.
  • the second embodiment according to the manufacturing method of the present invention is a manufacturing method in a manufacturing apparatus for manufacturing the above-described information recording medium (including various aspects) having the specific region (without film) of the present invention.
  • At least one of a recording film, a transflective film, and a reflective film is formed on the other recording layer of the second recording layer and one of the first recording layers.
  • a removing step of removing the film by subjecting the one recording layer to an etching process (dissolving with a removing solution).
  • the second embodiment of the manufacturing method of the present invention can also adopt various aspects.
  • the information recording medium includes the first recording layer and one or more second recording layers, the other layers of the second recording layer, and the first At least one of the recording layers
  • the two specific recording layers have specific areas that retain a large light transmittance (optical characteristics).
  • a multilayer type information having a relatively low apparent light reflectance, which cannot be recorded and reproduced while maintaining compatibility.
  • partial playback of only recorded information recorded in the opposing area (management area) It is possible to realize.
  • a recording means for example, even a conventional information recording / reproducing apparatus originally cannot perform recording and reproduction while maintaining compatibility, and is a multilayer information recording device having a relatively low apparent light reflectivity. It is possible to realize recording of partial recording information only in the opposite area (management area) of the recording area of the medium.
  • the information reproducing apparatus and method of the present invention it is provided with a reproducing means, an obtaining means and a process, and a control means and a process.
  • a conventional information recording / reproducing apparatus cannot perform recording or reproduction while maintaining compatibility, and recording on a multilayer information recording medium having a relatively low apparent light reflectance. It is possible to achieve partial playback of only recorded information recorded in the opposite area (management area) of the area.
  • the information recording medium manufacturing apparatus and method of the present invention it is provided with mask layer adding means, film forming means, and removing means. Therefore, the specific area is formed by the recording area from which the mask layer is removed, and the apparent light reflectance can be increased in the facing area facing the specific area. As a result, for example, a multi-layer information recording medium having a specific area and a counter area can be manufactured more easily and with high accuracy.
  • the information recording medium manufacturing apparatus and method of the present invention it is provided with a film forming means, a mask layer adding means, and a removing means. Therefore, the specific area is formed by the recording area to which the mask layer is added, and the apparent light reflectance can be increased in the facing area facing the specific area. As a result, for example, a multi-layer information recording medium having a specific area and a counter area can be more simply and accurately. It can be manufactured.
  • FIG. 1 is a schematic plan view (FIG. 1 (a)) schematically showing a basic structure of a two-layer optical disc according to an embodiment of an information recording medium of the present invention, and an outline of the two-layer optical disc.
  • FIG. 2 is a schematic cross-sectional view (FIG. 1 (b)) schematically showing the data structure of the recording area in the radial direction associated with the cross-sectional view.
  • FIG. 2 is a partially enlarged perspective view on a signal recording surface of a two-layer type optical disc according to an embodiment of the information recording medium of the present invention.
  • FIG. 3 is a partially enlarged cross-sectional view of a recording layer when an optical disc according to an embodiment of the information recording medium of the present invention is modeled on an n-layer type information recording medium having n recording layers.
  • FIG. 4 Incident light quantity and reflected light quantity in each recording layer when an optical disc according to an example of a general information recording medium is modeled on an n-layer type information recording medium having n recording layers. It is the schematic diagram which showed schematically.
  • FIG. 5 Conceptually the principle of adjusting the amount of reflected light received by the information recording / reproducing apparatus by changing the light reflectance of the second recording layer in a two-layer type optical disc as a general information recording medium. It is the shown schematic diagram.
  • FIG. 6 shows a specific area and a counter area according to the present invention when an optical disc according to an embodiment of the information recording medium of the present invention is modeled as an n-layer type information recording medium having n recording layers; It is the schematic diagram which showed the correlation with the reflectivity on four powers of vision.
  • FIG. 7 shows the amount of incident light in a specific area of the nth recording layer when an optical disc according to an embodiment of the information recording medium of the present invention is modeled on an n-layer type information recording medium having n recording layers. It is the schematic diagram which showed the reflected light quantity typically.
  • FIG. 8 is a data structure of a two-layer type optical disc according to an embodiment of the information recording medium of the present invention, an address such as a physical sector number constituting an ECC block in the recording area of the optical disc, and an optical disc format method.
  • 3 is a conceptual graph showing a recording or reproducing method by the method.
  • FIG. 9 In the recording area of the two-layered optical disc according to the embodiment of the information recording medium of the present invention.
  • FIG. 3 is a schematic plan view schematically showing the direction of a recording track.
  • FIG. 10 is a block diagram showing the overall configuration of a mastering apparatus that is an embodiment of the manufacturing apparatus of the present invention.
  • FIG. 11 is a schematic diagram schematically showing one manufacturing procedure according to the information recording medium manufacturing apparatus of the present invention.
  • FIG. 12 is a schematic view schematically showing one process for forming a specific area according to the information recording medium manufacturing apparatus of the present invention.
  • FIG. 13 is a schematic diagram schematically showing another process for forming a specific region according to the information recording medium manufacturing apparatus of the present invention.
  • FIG. 14 is a schematic diagram schematically showing another manufacturing procedure according to the information recording medium manufacturing apparatus of the present invention.
  • FIG. 15 is a schematic diagram schematically showing one process for forming a specific area according to the information recording medium manufacturing apparatus of the present invention.
  • FIG. 16 is a schematic diagram schematically showing another process for forming a specific region according to the information recording medium manufacturing apparatus of the present invention.
  • FIG. 17 is a schematic plan view schematically showing a recording area of an optical disc according to another embodiment of the information recording medium of the present invention.
  • FIG. 18 is a block diagram showing a basic configuration of an information recording / reproducing apparatus and a host computer according to an embodiment of the information recording apparatus of the present invention.
  • FIG. 19 shows management information including identification information (flag) indicating whether or not the specific area 20 and the counter area 21 are formed in another embodiment of the information recording medium of the present invention. It is a table.
  • FIG. 21 is a conceptual diagram schematically showing the structure of a recording area in the radial direction of an optical disc of another embodiment according to the information recording medium of the present invention.
  • FIG. 22 is a conceptual diagram schematically showing the structure of a recording area in the radial direction of an optical disc of still another embodiment of the information recording medium of the present invention. Explanation of symbols
  • the information recording medium is a multi-layered information recording medium having n recording layers (where n is a natural number of 2 or more), and k recording media (where k is a natural number smaller than n).
  • a multilayer information recording medium will be described in which a recording film, a transflective film, and a specific region (a filmless region, a so-called bypass region) in which any of the recording film, the reflective film, and the like are not formed.
  • FIG. 3, FIG. 4, FIG. 5 and FIG. The medium will be described.
  • FIGS. 1, 2, 7, and 8 a two-layer information recording medium will be described.
  • FIG. 1 is a schematic plan view (FIG. 1 (a)) schematically showing the basic structure of a two-layer type optical disc according to an embodiment of the information recording medium of the present invention.
  • the recording area in the radial direction associated with the schematic sectional view of the optical disc 2 is a schematic cross-sectional view (FIG. 1 (b)) schematically showing the data structure.
  • the opposite method in which the track layer of the LO layer and the track path of the L1 layer are in the opposite recording or reproducing direction is a specific example of the recording or reproducing method.
  • a parallel system in which the track layer of the LO layer and the track path of the L1 layer have the same recording or reproduction direction may be employed.
  • the optical disc 100 is implemented in the recording surface on the disc main body having a diameter of about 12 cm like the DVD, with the center hole 1 as the center.
  • a lead-in area 101—Og or specific area 20, a data area 102, and a middle area 104 are provided.
  • a recording layer such as the L0 layer and the L1 layer is laminated on the transparent substrate 106 of the optical disc 100, for example.
  • tracks 10 such as groove tracks and land tracks are alternately provided in a spiral shape or a concentric shape with the center hole 1 as the center.
  • ECC Error Correction Code
  • the ECC block 11 is a data management unit in which recorded information can be error-corrected.
  • the present invention is not particularly limited to the optical disc having such three areas.
  • the lead-in area 101-0g, the non-leader area 103-0g, and the middle area 104 do not exist, the data structure described below can be constructed. Further, as will be described later, the lead-in area 101-0g, the lead-out area 103-0g, and the middle area 104 may be further subdivided.
  • the optical disc 100 constitutes an example of first and second recording layers according to the present invention, which will be described later, on a transparent substrate 106, for example.
  • the L0 layer and L1 layer are stacked.
  • the L0 layer is configured to include a specific area 20, a data area 102-0, and a middle area 104-0, with the inner peripheral force also directed toward the outer peripheral side.
  • the L1 layer has an inner peripheral side force directed toward the outer peripheral side, so that the lead-in area 101-0g, the data area 102-0g, and the lead-out area 103 included in the facing area 21 facing the specific area 20 are arranged.
  • It consists of a data area 102-1 and a middle area 104-1 in addition to 0g. It should be noted that these specific areas 20, opposing areas 21, etc. will be described in detail. Will be described later.
  • the optical disc 100 may be a double-layer double-sided, that is, a dual-layer double-side, not limited to a double-layer single-sided, that is, a dual-layer.
  • the optical disc may be a single-layer type optical disc without being limited to the optical disc having two recording layers, or a multilayer type optical disc having three or more layers. Incidentally, the recording or reproducing procedure by the opposite method in the two-layer type optical disc and the data structure in each layer will be described later.
  • the optical disc 100 according to the present embodiment may be a hybrid type optical disc having two types of physical characteristics.
  • hybrid optical discs are (i) physically similar to recording optical discs such as CD-R, DVD-R, DVD-RW, etc. It has both a recording area that retains characteristics and (ii) a read-only area that retains the same physical characteristics as read-only optical disks such as CD-ROM and DVD-ROM.
  • the optical disc 100 according to the present embodiment may be a hybrid type optical disc in which the inner peripheral side of the recording layer is a reproduction-only area and the outer peripheral side is a recording area.
  • the optical disc 100 according to the present embodiment may be, for example, a hybrid type optical disc in which the L0 layer is a read-only recording layer and the L1 layer is a recording layer that can be additionally written or rewritten.
  • FIG. 2 is a partially enlarged perspective view of the signal recording surface of the two-layer type optical disc according to the embodiment of the information recording medium of the present invention.
  • FIG. 3 is a partially enlarged cross-sectional view of a recording layer when an optical disc according to an embodiment of the information recording medium of the present invention is modeled as an n-layer type information recording medium having n recording layers.
  • FIG. 2 for convenience of explanation, it is assumed that the laser light is irradiated from the upper side to the lower side.
  • FIG. 3 for convenience of explanation, it is assumed that the laser light is irradiated from the lower side to the upper side.
  • the laser beam is irradiated from the upper side to the lower side, and the groove track GT is indicated by the convex portion and the land track LT is indicated by the concave portion. It is. In other words, the laser beam is radiated from the lower side to the upper side, and the groove track GT is indicated by the concave portion and the land track LT is indicated by the convex portion. It should be noted that, generally, a portion to be cut when an original plate described later is created is referred to as a group (corresponding to a recess).
  • the optical disc 100 is a first phase change type recording that forms an information recording surface on a disc-like transparent substrate 106 (the lower side in FIG. 2).
  • a layer 107 is laminated, and a transflective film 108 is further laminated thereon (lower side in FIG. 2).
  • the (n ⁇ 1) -th recording layers from the first recording layer are transflective films.
  • a dielectric film or the like related to absorption of light energy at the time of recording is laminated above and below the recording film arranged on the side irradiated with laser light (reading side). Even so,
  • the groove track GT and the land track LT are alternately formed.
  • the laser beam LB is irradiated onto the groove track GT via the transparent substrate 106.
  • the laser beam LB is irradiated with the recording laser power, so that the phase change recording is performed by heating the first recording layer 107 or the like according to the recording data.
  • the recording data written to the first recording layer 107 is read by irradiating the laser beam LB with a reproducing laser power weaker than the recording laser power.
  • the user The recording mark may be recorded on the land track, or the recording mark may be recorded on the land track.
  • the groove track GT is oscillated with a constant amplitude and spatial frequency. That is, the groove track GT is wobbled, and the period of the wobble 109 is set to a predetermined value.
  • an address pit called a land prepit LP indicating preformat address information is formed! Information necessary for data recording such as disk rotation control during recording, generation of a reference clock, and recording address can be obtained by these two addressing (ie, wobble 109 and land prepit LP).
  • the preformat address information may be recorded in advance by modulating the wobble 109 of the groove track GT by a predetermined modulation method such as frequency modulation or phase modulation.
  • the second recording layer 207 is formed on the transflective film 108 (lower side in FIG. 2), and the reflective film 208 is further formed thereon (lower side in FIG. 2). Is formed. More specifically, when an n-layer type information recording medium is modeled, as shown in the upper right side of FIG. 3, the n-th recording layer is on the side irradiated with laser light from the reflective film (reading surface side).
  • the dielectric film related to absorption of light energy at the time of recording may be laminated on the top and bottom of the recording film placed in ().
  • the second recording layer 207 is irradiated with the laser beam LB via the transparent substrate 106, the first recording layer 107, and the transflective film 108, whereby the first recording layer In almost the same way as 107, it is configured to allow phase change recording and playback.
  • the second recording layer 207 and the reflective film 208 may be laminated on the transparent substrate 106 on which the first recording layer 107, the semi-transmissive reflective film 108, and the like are formed, that is, formed into a film, After being laminated on another substrate, that is, formed into a film, it may be bonded to the transparent substrate 106.
  • a transparent intermediate layer 205 (see also the intermediate layer in FIG. 3) having a transparent adhesive isotropic force is provided between the transflective film 108 and the second recording layer 207 as appropriate according to the manufacturing method.
  • recording / reproduction on the first recording layer 107 depends on the condensing position of the laser beam LB, that is, on which recording layer the focus is set. Or recording / reproduction on the second recording layer 207 is performed. [0113] (1-2-2) Based on optical properties!
  • FIG. 4 shows the amount of incident light on each recording layer when an optical disc according to an example of a general information recording medium is modeled on an n-layer type information recording medium having n recording layers. It is the schematic diagram which showed the reflected light quantity schematically.
  • Fig. 5 illustrates the principle of adjusting the amount of reflected light received by the information recording / reproducing device by changing the light reflectance of the second recording layer in a two-layer optical disc as a general information recording medium.
  • FIG. In FIG. 4 and FIG. 7 described later, the length of the horizontal arrow indicates the amount of light such as the amount of incident light or the amount of reflected light. Further, in FIG. 7 to be described later from FIG. 4, it is assumed that the laser light is irradiated from the lower side to the upper side for convenience of explanation.
  • the reflected light amount 0 (n, 0) from the nth recording layer is the amount of light that is transmitted from the first recording layer to the (n-1) recording layer. Since a loss occurs in the reciprocal optical path between the incident optical path and the reflected optical path, the apparent optical reflectance becomes lower than the optical reflectance of the single-layer information recording medium.
  • the apparent light reflectance in the specification of the present application refers to the detection of the light with respect to the incident light quantity incident on each recording layer by a photodetector (photo-detector) in the optical pickup (optical pickup). It may mean the ratio of the amount of reflected light reflected from each recording layer received by the device.
  • the apparent light reflectance refers to the light reflectance that each recording layer holds alone (hereinafter referred to as “true light reflectance” or “pure light reflectance” as appropriate) This is the actual light reflectivity considering the influence of the light reflectivity of other recording layers that are transmitted from the time when the laser beam reaches the recording layer, is reflected, and reaches the photodetector.
  • laser light is irradiated with a light reflectance that each recording layer holds alone, that is, a true light reflectance that does not consider the influence of other recording layers. It is designed and manufactured so as to be higher in the recording layer arranged on the deeper side in view of the applied side force.
  • the incident light amount shown in the central part of FIG. For example, even if the incident light quantity 1 (1) is incident, it decreases as it passes through the second recording layer, the third recording layer,..., And in the (n-1) recording layer, The second least amount of incident light is I (n-1). The nth recording layer disposed on the farthest side is irradiated with the smallest amount of incident light I (n).
  • the reflected light amount 0 (n, 0) from the nth recording layer is equal to the incident light amount I (n ) And, for example, even if approximately equal, it is reduced by transmitting through the (n ⁇ 1) th recording layer, resulting in a reflected light amount of 0 (n, 1). In the same manner, the value is decreased each time the light passes through the recording layer, and after the light finally passes through the first recording layer, the amount of reflected light is 0 (n, n ⁇ 1).
  • the reflected light amount 0 (n ⁇ 1, 0) from the (n ⁇ 1) th recording layer is equal to the incident light amount I (n ⁇ 1) shown in the central part of FIG. Even if they are approximately equal, they are reduced by passing through the (n ⁇ 2) -th recording layer, resulting in a reflected light amount of 0 (n ⁇ 1, 1). Thereafter, in the same manner, the value is decreased every time the light passes through the recording layer, and after the light finally passes through the first recording layer, the reflected light amount becomes 0 (n ⁇ 1, n ⁇ 2).
  • the amount of reflected light 0 (1, 0) from the first recording layer is, for example, approximately equal to the amount of incident light 1 (1) shown in the center of FIG. In this case, the amount of reflected light from each recording layer described above is relatively the largest.
  • the multilayer information recording medium is the same as that described above in all the recording layers. Designed and manufactured so that the apparent light reflectance is substantially the same. More specifically, as shown in FIG. 5, by adjusting the true light reflectance in the second recording layer, (i) the light reflected by the second recording layer and received by the information recording / reproducing device is received. The amount of light provided by the first recording layer and the second recording layer can be reduced by making the amount of light (ii) larger or smaller than the amount of light received by the information recording / reproducing device. It is possible to adjust the apparent light reflectance of the information recording medium.
  • the first recording with a light reflectance of, eg, 33%
  • the amount of received light reflected by the second recording layer and received by the information recording / reproducing device is made larger than (ii) the amount of received light reflected by the first recording layer and received by the information recording / reproducing device. It is possible.
  • the amount of light received reflected by the second recording layer and received by the information recording / reproducing device is made smaller than (ii) the amount of light received reflected by the first recording layer and received by the information recording / reproducing device. It is possible.
  • FIG. 6 shows a specific area according to the present invention when the optical disc according to the embodiment of the information recording medium of the present invention is modeled as an n-layer type information recording medium having n recording layers.
  • FIG. 6 is a schematic diagram schematically showing a correlation between an opposing region and an apparent reflectance.
  • FIG. 7 shows incident light in a specific area of the n-th recording layer when the optical disc according to the embodiment of the information recording medium of the present invention is modeled as an n-layer type information recording medium having n recording layers. It is the schematic diagram which showed quantity and reflected light quantity typically.
  • the recording film and the specific area where the transflective film is not formed are formed in at least one recording layer among the plurality of recording layers, the recording area in each recording layer It is possible to partially change the apparent light reflectivity in the opposite region of.
  • the laser light is transmitted from the first recording layer to the first recording layer.
  • the recording film and the semi-transmissive reflective film are not formed in the specific region 20a (1) of the first recording layer shown in the center part of FIG. Increasing the amount of reflected light from the facing area 21b, the apparent light reflectance in the facing area 21b of the m-th recording layer is relatively higher than the apparent light reflectance in the normal area 22a of the m-th recording layer. It is possible to make it high.
  • the (n ⁇ 1) -th recording layer extends from the specific area 20 of the first recording layer. Since the recording film and the semi-transmissive reflective film are not formed up to the specific area 20 of the above, the amount of reflected light (corresponding to 0 (1, 0)) from the opposing area 21 of the nth recording layer is increased!]
  • the apparent light reflectance in the counter area 21 is increased so that it is approximately equivalent to the amount of reflected light from the normal area 22 of the first recording layer (corresponding to 0 (1, 0)). It is also possible to make the light reflectivity of these substantially equal. As shown on the left side of FIG.
  • the amount of reflected light from the facing area 21 of the nth recording layer (corresponding to O (n, n-1)) is from the normal area 22 of the first recording layer. Compared to the amount of reflected light (corresponding to O (1, 0)), the apparent light reflectance is also relatively reduced.
  • k recording layers (where k is smaller than n !, a natural number) out of n recording layers each have a specific area (filmless area).
  • a multilayer type information recording medium having k recording layers is provided in the opposing area (management area) of the nth recording layer arranged at the farthest side, which is a partial recording area of the multilayer information recording medium. It is possible to obtain optical characteristics such as apparent optical reflectivity that are substantially equivalent to the recording area provided in the kth recording layer disposed on the innermost side of the information recording medium.
  • the opposing area (management area) of the second recording layer is apparent in the opposing area (management area). It is possible to make the optical characteristics such as light reflectance substantially equivalent to that of a single recording layer in a single-layer type information recording medium having a single recording layer. More specifically, for example, a DVD-DL (Dual Layer) or the like, for example, a multi-layer information recording medium having two recording layers, such as a length of an interval between recording layers (that is, a length of a bonding interval, The thickness of the intermediate layer is very narrow (thin) compared to the thickness of the transparent substrate such as the cover layer. Therefore, the information recording / reproducing apparatus
  • the second recording layer (disposed on the back side) has a facing area (management area) that is first irradiated with laser light that has passed through a specific area (film-free area) on a two-layer type information recording medium.
  • the recording layer is recognized as a so-called first recording layer of a general two-layer information recording medium or a single recording layer of a single-layer information recording medium.
  • the recording area of the first recording layer arranged on the near side when viewed from the side irradiated with the laser beam is identified by identification information such as a media ID or the value of the optimum recording power, for example.
  • Information management media such as the DVD standard, which is the head of the recording area where various types of management information such as record management information, etc., and record information including a part of the record information such as user data is recorded.
  • an apparent standard such as a DVD-RW DL (Dual Layer) is expected to be developed or developed in the future. Based on good signal quality, recording and reproduction cannot be performed on a two-layer rewritable information recording medium having a relatively low light reflectance.
  • the opposing area (management area) provided in the second recording layer of the two-layer information recording medium having a relatively low apparent light reflectance is, for example, the inner circumference of the disc.
  • the information recording / reproducing apparatus that does not support low reflection described above can also be used.
  • the counter area (management area) can be accessed, and the counter area (management area) can be used. In other words, although the recording area is limited, it is possible to maintain compatibility in recording and reproduction by a conventional information recording / reproducing apparatus that does not support low reflection.
  • a new standard, low-reflection compatible information recording / reproducing function that can record and reproduce information on a two-layer rewritable information recording medium with relatively low apparent light reflectivity. Depending on the device, recording and reproduction can be performed on all of the two recording layers of the information recording medium.
  • FIG. 8 a configuration based on the data structure of the two-layer optical disc according to the embodiment of the information recording medium of the present invention will be described with reference to FIG. 8 and FIG. More specifically, Figure 8 and Referring to FIG. 9, the data structure of a two-layer type optical disc, the address such as the physical sector number constituting the ECC block in the recording area of the optical disc, the recording or reproducing procedure by the opposite method of the optical disc, and the The direction of the recording track on the optical disc will be described.
  • FIG. 9 the data structure of a two-layer type optical disc, the address such as the physical sector number constituting the ECC block in the recording area of the optical disc, the recording or reproducing procedure by the opposite method of the optical disc, and the The direction of the recording track on the optical disc will be described.
  • FIG. 9 the data structure of a two-layer type optical disc, the address such as the physical sector number constituting the ECC block in the recording area of the optical disc, the recording or reproducing procedure by the opposite method of the optical disc, and the The
  • FIG. 8 shows the data structure of the two-layered optical disk according to the embodiment of the information recording medium of the present invention, the address such as the physical sector number constituting the ECC block in the recording area of the optical disk, and 3 is a conceptual graph showing a recording or reproducing method by the opposite method of the optical disc.
  • FIG. 9 is a schematic plan view schematically showing the direction of the recording track in the recording area of the two-layer optical disc in the embodiment of the information recording medium of the present invention.
  • the vertical axis in FIG. 8 indicates addresses such as sector numbers expressed in hexadecimal numbers, for example, and the horizontal axis indicates the relative position in the radial direction of the optical disk.
  • the two-layer type optical disc 100 has two recording layers laminated on a transparent substrate (not shown), that is, LO layer and L1. And configured with layers.
  • the LO layer is provided with a specific area 20, a data area 102-0, and a middle area 104-0 from the inner circumference side to the outer circumference side.
  • the L1 layer has a recording management area on the outer peripheral side.
  • RMAOg Recording Management Area
  • RMAOg can record RMD (Recording Management Data) that constitutes an example of "management information" according to the present invention. Specifically, in RMAOg, RMD can be added about 700 times.
  • a control data zone CDZ is provided in the lead-in area 101-0g.
  • control data zone CDZ for example, various information such as the number of recording layers, the direction of recording tracks, and the track pitch are pre-recorded by, for example, laser light.
  • At least the RMAg and CDZ included in the facing area 21 are set to be arranged in a recording area having a radius of 35 mm or less from the innermost circumference! Better ,.
  • the reason for this is that, first, in general, an information recording / reproducing apparatus that performs recording or reproduction on, for example, an information recording medium such as a DVD is first predetermined in the apparatus as an initial operation. The optical pickup focuses on the recording surface at the position (hereinafter referred to as the focus operation). Next, the information recording / reproducing apparatus reads address information indicating a logical position from the recorded information recorded on the information recording medium, moves to a desired address position, and manages the information recording medium (predetermined recording information).
  • Management information required for various types of management is acquired.
  • the management information is recorded on the inner periphery between a radius of 20 (mm) and 22 (mm).
  • Various recording or playback operations that follow the focus operation are started in the recording area up to a radius of 35 (mm). Therefore, the optical disc set as described above is not compatible with conventional low reflection (cannot perform recording or reproduction on a two-layer rewritable information recording medium having a relatively low apparent light reflectance).
  • the type of information recording / reproducing apparatus can also obtain the focus operation and management information. For example, various types of recording information such as user data for the facing area 21 arranged in the recording area having a radius of 35 (mm) or less can be recorded for reproduction.
  • Recording information can be recorded in the data area 102—Og (102-0, 102-1).
  • the middle area 104-0 (104-1) has a basic function to prevent the recording or playback position for the L0 and L1 layers from moving out of the unrecorded area or the substrate. It also functions as a “jump buffer area” that prevents the position from being moved out of the unrecorded area or the substrate.
  • RMAOg and a calibration area for performing laser beam power calibration may be collectively referred to as an “information area”.
  • the above-described lead-in area 101-0g, data area 102-0g (102-0, 102-1), and middle area 104-0 (104-1) may be collectively referred to as “R-Information AreaJ”. .
  • the two-layered optical disc 100 is configured as described above, when recording or reproducing the optical disc 100, an information recording / reproducing device according to a specific example of the information recording device of the present invention described later is used.
  • the laser beam LB is irradiated from the side of the substrate (not shown), ie, from the lower side to the upper side in FIG.
  • the movement distance and direction in are controlled. Thereby, data is recorded on each recording layer, or recorded data is reproduced.
  • a partial opposite method is adopted as a recording or reproducing procedure of the two-layer type optical disc according to the embodiment of the information recording medium of the present invention.
  • the partial opposite method is more specifically, as a recording or reproducing procedure of a two-layer type optical disc, an optical pickup of an information recording / reproducing apparatus, which will be described later, in the LO layer from the inner peripheral side to the outer peripheral side.
  • the optical pick-up is also directed toward the outer peripheral side in the same manner as the LO layer, that is, as indicated by the arrow in FIG.
  • the optical pickup is directed from the outer periphery to the inner periphery, that is, the arrow in FIG.
  • FIGS. 9 (c) and 9 (d) a recording film and a transflective film disposed on the inner periphery of the LO layer (first recording layer) are formed!
  • the direction of the recording track in the facing region 21 arranged in the inner peripheral portion of the L1 layer (second recording layer) that is opposed to the specific region 20 by being bonded or laminated is the L1 layer (first recording layer).
  • the direction of the recording track in the normal area 22 arranged in the middle and outer circumferences of the two recording layers is the opposite direction.
  • the conventional technology was only compatible with information recording media having a relatively high apparent light reflectance.
  • a recording area that can be recorded or reproduced while maintaining compatibility is arranged in the opposing area 21 of the second recording layer as described above.
  • the recorded information is recorded in a spiral shape on the disk-shaped signal surface.
  • the management information recording area exists in the first recording layer.
  • the spiral direction of the first recording layer and the second recording layer, that is, the recording direction is reversed.
  • the direction of the recording track in the specific area of the nth recording layer is recorded in the recording area of the recording layer for the purpose of pseudo replacement.
  • the direction of the recording track in the facing area 21 where the management information is recorded in the second recording layer is the same as that in the first recording layer.
  • the direction of the recording track is the same.
  • the specific area 20 of the second recording layer in the above-described opposite-type two-layer type optical disc is in the same spiral direction as the first recording layer, and is located on the outer periphery of the inner periphery.
  • a recording track is formed in which the address increases as it moves. Therefore, the management information recorded in the opposing area 21 of the second recording layer is normally recorded by the information recording / reproducing apparatus that performs the recording or reproducing operation on the assumption that it was originally recorded in the first recording layer. Alternatively, reproduction can be performed.
  • the laser beam radiated from the optical pickup LB force is transmitted through the specific region 20 of the LO layer, and the L1 layer
  • the lead-in area 101—Og, the data area 102—Og, and the lead-out area 103—Og move from the inner circumference side to the outer circumference side, the recording area of the optical disc 100
  • Addresses such as sector numbers increase.
  • the optical pickup power is accessed by sequentially accessing the inner peripheral edge of the L1 layer with the address “A1” and the end position of the lead-out area 103.0g of the L1 layer with the address “A2”.
  • recording or reproduction is performed in the facing region 21 of the L1 layer.
  • a specific example of the pseudo first recording track according to the present invention is configured by the recording tracks in the counter area 21 whose addresses are specified by “A1” to “A2”.
  • the sector number in the recording area of the optical disc 100 is as the optical pickup moves from the outer peripheral side to the inner peripheral side in the middle area 104-1 and the data area 102-1. It will increase. More specifically, the middle area 104-1 where the optical pickup plays a role of buffering (the start address is “D1” and the end address is “D2”), and the address of the data area 102-1 is “ Recording or reproduction in the L1 layer is performed by sequentially accessing the start position of E1 and the address of the data area 102-1 to the end position of “E2”.
  • the addresses such as the sector numbers in the L0 layer and the L1 layer described above may all have a predetermined correlation such as a 15's complement relationship in hexadecimal. More specifically, for example, the turning point in the L0 layer (for example, sector number “lAFFFFh”) and the turning point in the L1 layer (for example, sector number “E50000h”) may have a 15's complement relationship. In this embodiment, the last “h” such as “30000h” indicates that it is expressed in hexadecimal.
  • the complement of “lAFFFFh” is the hexadecimal sector number “1 AFFFFhJ” converted to binary “000110101111111111111111” and bit inverted (invert) “11100101000000000000” and hexadecimal “E50000h” By reconverting to
  • the physical sector number described above may be assigned to a logical block address (LBA) force one to one. More specifically, for example, the sector number “030000h” may correspond to “000000” LBA force, and the sector number “lAFFFFh” may correspond to “17FFFF” LBA. The sector number “E50000h” corresponds to the “180000” LBA, and the sector number “FCFFEFh” corresponds to the “2FFFEF” LBA. Therefore, for example, the host computer can perform recording and reproducing operations according to the logical block address managed by the file system, for example, without being aware of the physical sector number.
  • LBA logical block address
  • this embodiment is applied to the information recording medium manufacturing apparatus of the present invention.
  • This is an example in which the embodiment is applied to a mastering device for an optical disc.
  • FIG. 10 is a block diagram showing the overall configuration of a mastering apparatus which is an embodiment of the manufacturing apparatus of the present invention.
  • the mastering device 50 is a device for creating a disc master DS, and includes a recording unit 52, a spindle motor 53 that rotates the disc master DS, and a servo unit 54.
  • the disc master DS is configured, for example, as a glass master coated with a photoresist.
  • the recording unit 52 includes a laser device that irradiates laser light, an optical system that condenses the laser light on the disc master DS, and a slider device that moves the laser device and the optical system together in the radial direction of the disc master DS.
  • the laser device emits laser light having a laser power corresponding to the drive signal supplied from the driver 65.
  • the slider device moves the optical system and the laser device in the radial direction of the disk master DS in accordance with a control signal from the servo unit 54.
  • the servo unit 54 is supplied with the first clock signal CK1 and the pit synchronization signal SYNCp.
  • the servo unit 54 executes a spindle servo that controls the rotation of the spindle motor 53, a focus servo that controls the focus of the laser beam, and a slide servo that controls the slider device in synchronization with these signals. Then, the track pitch is controlled. Further, a groove shape is formed by moving the laser beam in the radial direction by a wobble modulator (not shown).
  • the first clock signal CK1 is generated by the first clock signal generation circuit 71. Further, the frequency dividing circuit 72 divides the first clock signal CK1 to generate the second clock signal CK2 and the like.
  • the second clock signal CK2 is used to generate the wobble signal WB and serves as the time reference.
  • the mastering device 50 is supplied with input data Din from an external device.
  • Input data Din is taken into buffer 61 via interface 60.
  • the input data Din taken into the buffer 61 is divided into wobble data DW under the control of a CPU (Central Processing Unit) and transferred to the wobble data memory 66, respectively.
  • the wobble data DW stored in the wobble data memory 66 is controlled by the CPU.
  • the force is also read and supplied to the ECC generation circuit 67.
  • the ECC generation circuit 67 generates an error correction code based on the wobble data DW and attaches it to the wobble data DW.
  • the wobble data generation circuit 69 adds the wobble synchronization signal SYNC w to the wobble data DW, and then generates the data SS.
  • the wobble signal generation circuit 70 performs a predetermined modulation on the data SS to generate a wobble signal WB.
  • a predetermined modulation on the data SS to generate a wobble signal WB.
  • two types of wobble signals corresponding to the two types of groove tracks are generated.
  • FIG. 11 to FIG. 16 one and other manufacturing procedures according to the information recording medium manufacturing apparatus of the present invention will be described including the examination of its effects.
  • FIG. 11 to FIG. 16 the same steps are given the same step numbers, and the description thereof will be omitted as appropriate.
  • FIG. 11 is a schematic diagram schematically showing one manufacturing procedure according to the information recording medium manufacturing apparatus of the present invention.
  • a transparent substrate (a resin substrate) is formed from a baby stano by an injection molding machine.
  • a polycarbonate substrate is created.
  • the baby stamper described above is created through the following four processes performed before Step S10.
  • the portion irradiated with the cutting laser beam in this way is in a state where the photoresist is disconnected at the molecular level by the optical energy. By being immersed in the liquid, a hole is formed and a cutting part is formed.
  • nickel is laminated on the nickel thin film by an electric plating process, and a thick nickel layer is formed on the glass original plate.
  • the nickel layer is peeled off from the glass original plate to create a master stamper. From this master stamper, a mother stamper and a baby stamper are created through the same electric heating process. Since the baby stamper undergoes two transfers, the same unevenness as the master stamper is formed.
  • the recording film and the dielectric film are formed on the transparent substrate by a sputtering process or a vapor deposition process.
  • a transflective film is further formed on the transparent substrate on which the recording film and the dielectric film are formed.
  • step S1 in FIG. 1 At the same time as steps S10 to S30 described above or in succession, step S1 in FIG.
  • a transparent substrate is made from a baby stamper by an injection molding machine to produce a recording layer such as an L1 layer.
  • step S20a in FIG. 11 a reflective film is formed on the transparent substrate.
  • a recording film and a dielectric film are formed on the transparent substrate on which the reflective film is formed by a sputtering process or a vapor deposition process.
  • step S40 in FIG. 11 either the recording layer formed through step S30 or the recording layer formed through step S30a is inverted upside down. After that, the two recording layers are bonded together, for example, to produce a two-layer type information recording medium.
  • FIG. 12 is a schematic diagram schematically showing one process for forming the specific area in the information recording medium manufacturing apparatus of the present invention.
  • step S10 in order to produce a recording layer such as an LO layer, a mask layer is formed on a portion corresponding to the specific area 20 on the produced transparent substrate by an injection molding machine. Incidentally, the mask layer is not formed in the portion corresponding to the normal region 22.
  • step S20 in FIG. 12 in the same manner as in step S20 described above, on the transparent substrate on which the mask layer is formed (added), the recording film and the dielectric film are separated from each other.
  • the film is formed by a sputtering process or a vapor deposition process.
  • step S30 in FIG. 12 in the same manner as in step S30 described above, the transparent substrate on which the recording film and the dielectric film are also formed on the mask layer is further translucent. A reflective film is formed.
  • the specific region can be formed by performing a process of forming a mask layer, that is, a so-called mask process (shielding process), on the specific region that is not subjected to film formation in advance as described above.
  • the position where the specific area is formed can be controlled.
  • the mask process is a process that can be performed for each recording layer as described above, the specific region can be changed to a desired region by changing the position where the mask layer is formed with respect to the desired recording layer. It can be formed at a desired position in the recording layer.
  • step S35 in FIG. 12 the mask layer is removed, and the recording film, dielectric film, and half of the portion corresponding to the specific region 20 together with the mask layer are removed.
  • the transflective film is removed.
  • step S40 in FIG. 12 in substantially the same manner as step S40 described above, the recording layer formed through step S35 and the recording layer formed through step S30a After either one of them is inverted upside down, the two recording layers are bonded together to produce, for example, a two-layer type information recording medium.
  • the specific region 20 is formed by the recording region from which the mask layer is removed, and the opposing region is opposed to the specific region 20 In 21 it is possible to increase the apparent light reflectance.
  • FIG. 13 shows the information recording medium of the present invention. It is the schematic diagram which showed typically the other process of forming the specific area
  • step S20 in FIG. 13 a recording film and a dielectric film are formed in a sputtering process or a vapor deposition process on a transparent substrate produced by an injection molding machine in substantially the same manner as step S20 described above. Is formed.
  • step S30 in FIG. 13 a transflective film is further formed on the transparent substrate on which the recording film and the dielectric film are formed in substantially the same manner as step S30 described above. Is done.
  • the mask layer corresponds to the normal region 22 on the transparent substrate on which the recording film, the dielectric film, and the transflective film are formed. Formed in parts. Note that a mask layer is not formed in a portion corresponding to the specific region 20.
  • step S32 in FIG. 13 an etching process is performed on the transparent substrate on which the recording film, the dielectric film, and the transflective film are formed and the mask layer is formed. Then, the recording film, the dielectric film, and the transflective film in the part corresponding to the specific region 20 where the mask layer is not formed are removed.
  • step S40 in FIG. 13 in substantially the same manner as step S40 described above, the recording layer formed through step S32 and the recording layer formed through step S30a After either one of them is inverted upside down, the two recording layers are bonded together to produce, for example, a two-layer type information recording medium.
  • a specific area 20 is formed by a recording area where a mask layer is not formed, and is opposed to the specific area 20. In the facing region 21, it is possible to increase the apparent light reflectance.
  • FIG. 14 is a schematic diagram schematically showing another manufacturing procedure according to the information recording medium manufacturing apparatus of the present invention.
  • a recording layer such as an LO layer is manufactured.
  • a transparent substrate is created from the baby stano by an injection molding machine.
  • a recording film and a dielectric film are formed on the transparent substrate by a sputtering process or a vapor deposition process.
  • a transflective film is further formed on the transparent substrate on which the recording film and the dielectric film are formed.
  • a recording layer such as an L1 layer, for example, an injection molding machine, a baby stamper, a recording film, a dielectric film, and An intermediate layer is laminated on the transparent substrate on which the semi-transmissive reflective film is formed.
  • step S150 in FIG. 14 in the transparent substrate on which the recording film, the dielectric film, and the transflective film are formed and the intermediate layer is laminated, the recording film and the dielectric film Body film force S Film is formed by sputtering process or vapor deposition process.
  • step S160 in FIG. 14 a recording film, a dielectric film, and a transflective film are formed, an intermediate layer is laminated, and the recording film and the dielectric film are further stacked. A reflective film is formed on the formed transparent substrate. Note that steps S140 to S160 are repeated for a multilayer information recording medium in which three or more recording layers are laminated.
  • step S170 in FIG. 14 a recording film, a dielectric film, and a semitransparent reflection film are formed, an intermediate layer is laminated, and a recording film, a dielectric film,
  • the transparent substrate is attached to the transparent substrate on which the reflective film is further formed, so that, for example, a two-layer type information recording medium is manufactured.
  • FIG. 15 is a schematic diagram schematically showing one process for forming the specific area according to the information recording medium manufacturing apparatus of the present invention.
  • step S110 a transparent substrate produced by an injection molding machine is used to manufacture a recording layer such as an LO layer.
  • a mask layer is formed in a portion corresponding to the specific region 20. Note that a mask layer is not formed in a portion corresponding to the normal region 22.
  • step S120 in FIG. 15 it is substantially the same as step S120 described above.
  • the recording film and the dielectric film are formed by a sputtering process or a vapor deposition process.
  • step S130 in FIG. 15 in the same manner as in step S130 described above, the transflective reflection is further performed on the transparent substrate on which the recording film and the dielectric film are also formed on the mask layer. A film is formed.
  • step S135 in FIG. 15 the mask layer is removed, and the recording film, dielectric film, and half of the portion corresponding to the specific region 20 together with the mask layer are removed.
  • the transflective film is removed.
  • the specific area 20 is formed by the recording area from which the mask layer is removed, and the opposing area 21 facing the specific area 20 is formed. In addition, it is possible to increase the light reflectance apparently.
  • FIG. 16 is a schematic diagram schematically showing another process for forming the specific area according to the information recording medium manufacturing apparatus of the present invention.
  • step S120 in FIG. 16 a recording film and a dielectric film force S sputtering process are performed on a transparent substrate formed by an injection molding machine in substantially the same manner as step S120 described above. Or it forms into a film by a vapor deposition process.
  • step S130 in FIG. 16 a semi-transmissive reflective film is further formed on the transparent substrate on which the recording film and the dielectric film are formed in substantially the same manner as step S130 described above.
  • the mask layer corresponds to the normal region 22 on the transparent substrate on which the recording film, the dielectric film, and the semi-transmissive reflective film are formed. Formed in parts. Note that a mask layer is not formed in a portion corresponding to the specific region 20.
  • step S132 in FIG. 16 an etching process is performed on the transparent substrate on which the recording film, the dielectric film, and the transflective film are formed and the mask layer is formed. In the portion corresponding to the specific region 20 where the mask layer is not formed, the recording film, dielectric The body film and the transflective film are removed.
  • the specific region 20 is formed by the recording region where the mask layer is not formed, and is opposed to the specific region 20.
  • the facing region 21 it is possible to increase the apparent light reflectance.
  • FIG. 17 is a schematic plan view schematically showing the recording area of the optical disc in another example of the information recording medium of the present invention.
  • “n ⁇ 1” recording layers out of n recording layers have specific areas ( In the n-th recording layer of the multi-layer information recording medium each having a non-film region, an adjacent region 23 (hereinafter referred to as a “guard band” as appropriate) is provided as a buffer region between the opposing region 21 and the normal region 22. ) May be provided.
  • this adjacent area 23 is used for various recording areas in both the opposing area 21 and the normal area 22 in order to avoid changing the laser light quantity in the same recording track and the circuit characteristics of the photodetector. It is desirable to be placed at the boundary while including the above characteristics.
  • FIG. 18 is a block diagram showing the basic configuration of the information recording / reproducing apparatus and the host computer according to the embodiment of the information recording apparatus of the present invention.
  • the information recording / reproducing apparatus 300 has a function of recording record data on the optical disc 100 and a function of reproducing the record data recorded on the optical disc 100.
  • the information recording / reproducing apparatus 300 is an apparatus that records information on the optical disc 100 and reads the information recorded on the optical disc 100 under the control of a CPU (Central Processing Unit) 305 for driving.
  • a CPU Central Processing Unit
  • the information recording / reproducing apparatus 300 includes an optical disc 100, an optical pickup 301, a signal recording / reproducing unit 302, an address detecting unit 303, an address calculating unit 304, a CPU (drive control means) 305, a spindle motor 306, a memory 307, A data input / output control means 308 and a bus 309 are provided.
  • the host computer 400 includes a CPU (host control means) 401, a memory 402, an operation control means 403, an operation button 404, a display panel 405, a data input / output control means 406, and a bus 407.
  • the CPU host control means
  • the information recording / reproducing apparatus 300 may be configured to be communicable with an external network by housing the host computer 400 equipped with communication means such as a modem in the same casing.
  • the CPU (host control means) 401 of the host computer 400 provided with communication means such as i-link directly controls the information recording / reproducing apparatus 300 via the data input / output control means 308 and the bus 309. By doing so, you may be able to communicate with an external network.
  • the optical pickup 301 performs recording / reproduction on the optical disc 100, and includes a semiconductor laser device. And lens. More specifically, the optical pickup 301 irradiates the optical disc 100 with a light beam such as a laser beam at a first power as a read light during reproduction, and modulates with a second power as a write light at the time of recording. Irradiate while letting go.
  • a light beam such as a laser beam at a first power as a read light during reproduction
  • a second power as a write light at the time of recording. Irradiate while letting go.
  • the signal recording / reproducing means 302 records or reproduces the optical disc 100 by controlling the optical pickup 301 and the spindle motor 306. More specifically, the signal recording / reproducing means 302 is constituted by, for example, a laser diode driver (LD dryer) and a head amplifier.
  • the laser diode driver drives a semiconductor laser (not shown) provided in the optical pickup 301.
  • the head amplifier amplifies the output signal of the optical pickup 301, that is, the reflected light of the light beam, and outputs the amplified signal.
  • the signal recording / reproducing means 302 determines the optimum laser power by OPC pattern recording and reproduction processing together with a timing generator (not shown) under the control of the CPU 305 during OPC (Optimum Power Control) processing.
  • a semiconductor laser (not shown) provided in the optical pickup 301 is driven so that the above can be performed.
  • the signal recording / reproducing means 302, together with the optical pickup 301 constitutes an example of “recording means” and “reproducing means” according to the present invention.
  • the signal recording / reproducing means 302 may be able to acquire the DR information 50a recorded in the recording management area RMA0 (RMA1), for example. Therefore, the signal recording / reproducing means 302 may constitute an example of the “acquiring means” according to the present invention.
  • the address detection unit 303 also detects an address (address information) on the optical disc 100, for example, a reproduction signal power that is output from the signal recording / reproduction means 302 and includes a pre-format address signal or the like.
  • the address calculation unit 304 performs operations such as adding and subtracting the address offset value to reduce the influence of the bonding error between the L0 layer and the L1 layer, for example, on the detected address. May be.
  • the CPU (drive control means) 305 controls the entire information recording / reproducing apparatus 300 by giving instructions to various control means via the bus 309. Note that software or firmware for operating the CPU 305 is stored in the memory 307. In particular, the CPU 305 constitutes an example of “control means” according to the present invention.
  • the spindle motor 306 rotates and stops the optical disc 100, and operates when accessing the optical disc. More specifically, the spindle motor 306 is configured to rotate and stop the optical disc 100 at a predetermined speed while receiving spindle servo from a servo unit or the like (not shown).
  • the memory 307 includes general data processing and OPC in the information recording / reproducing apparatus 300 such as a buffer area for recording / reproducing data and an area used as an intermediate buffer for conversion to data used by the signal recording / reproducing means 302. Used in processing.
  • the memory 307 has a program for operating as a recorder device, that is, a ROM area in which firmware is stored, a buffer for temporarily storing recording / playback data, a variable necessary for the operation of the firmware program, and the like.
  • the RAM area to be stored is configured.
  • Data input / output control means 308 controls external data input / output to / from information recording / reproducing apparatus 300, and stores and retrieves data in / from data buffer on memory 307. Connected to the information recording / reproducing apparatus 300 via an interface such as SCSI or ATAPI!
  • the drive control command issued from the external host computer 400 (hereinafter referred to as a host as appropriate) is the data input / output control means. It is transmitted to CPU 305 via 308. Similarly, recording / reproduction data is transmitted / received to / from the host computer 400 via the data input / output control means 308.
  • the CPU (host control means) 401, the memory 402, the data input / output control means 406, and the bus 407 are substantially the same as the corresponding components in the information recording / reproducing apparatus 300. It is.
  • the operation control means 403 is for receiving and displaying an operation instruction for the host computer 400.
  • the operation control means 403 transmits the instruction by the operation button 404 to the CPU 401 for recording or reproduction.
  • the CPU 401 transmits a control command (command) to the information recording / reproducing apparatus 300 via the data input / output means 406 to control the entire information recording / reproducing apparatus 300.
  • commands commands
  • the CPU 401 can transmit a command requesting the information recording / reproducing apparatus 300 to transmit the operation state to the host.
  • the operation state of the information recording / reproducing apparatus 300 such as recording or reproduction can be grasped, so that the CPU 401 can display a fluorescent tube or LCD via the operation control means 403.
  • the operation status of the information recording / reproducing device 300 can be output to the display panel 405
  • One specific example of using the information recording / reproducing apparatus 300 and the host computer 400 in combination as described above is a household device such as a recorder device that records and reproduces video.
  • This recorder device is a device that records video signals from broadcast receiver tuners and external connection jacks on a disc, and outputs the video signals reproduced from the disc to an external display device such as a television.
  • the program stored in the memory 402 is executed by the CPU 401 to operate as a recorder device.
  • the information recording / reproducing apparatus 300 is a disk drive (hereinafter referred to as a drive as appropriate)
  • the host computer 400 is a personal computer workstation.
  • the host computer such as a personal computer and the drive are connected via SCSI / ATAPI data input / output control means 308 (406), and the application such as writing software installed in the host computer controls the disk drive. To do.
  • FIG. 19 shows management information including identification information (flag) indicating whether or not the specific area 20 and the facing area 21 are formed in another embodiment of the information recording medium of the present invention. It is the table shown.
  • the management information recorded in the RMAOg includes (i) information indicating that the optical disk is a two-layer type or a single-layer type, and (ii) the optical disc. And (iii) identification information (flag) indicating whether or not the specific area 20 and the facing area 21 are formed may be included in the recording layer! Furthermore, (iv) It may include type information such as a media ID indicating the type of the information recording medium.
  • the information recording / reproducing apparatus quickly and accurately determines whether the specific area 20 and the opposed area 21 are formed in the multilayer information recording medium to be recorded or reproduced, and It becomes possible to record or reproduce the information recording medium quickly and accurately.
  • FIG. 20 is a flowchart showing a specific example of the recording or reproducing method for the information recording medium of the present invention.
  • step S101 when the optical disc 100 is loaded, it is included in the opposing area as an initial operation by a reading means such as an optical pickup under the control of a control means such as a CPU.
  • a reading means such as an optical pickup
  • a control means such as a CPU.
  • Various management information recorded in advance is acquired (step S101).
  • Step S102 under the control of a control means such as a CPU, it is determined whether or not the specific area 20 and the facing area 21 are formed based on the identification information (flag) included in the acquired management information.
  • a control means such as a CPU
  • recording or reproduction is performed on, for example, the data area 102-Og included in the facing area (step S103).
  • step S103 is omitted.
  • the information recording medium is determined to be an unknown medium, It is possible to prevent random discharge.
  • step S105 it is determined whether the power to end the recording or reproducing operation is controlled under the control of a control means such as a CPU.
  • a control means such as a CPU
  • step S105: Yes when the recording or reproducing operation is finished
  • step S1 05: No if the reproduction operation is not terminated
  • step S102 it is determined again whether or not the groove of the groove track formed in the second management information recording area is divided.
  • FIG. 21 is a conceptual diagram schematically showing the structure of the recording area in the radial direction of the optical disc in another embodiment of the information recording medium of the present invention.
  • FIG. 22 is a conceptual diagram schematically showing the structure of the recording area in the radial direction of the optical disc in still another embodiment of the information recording medium of the present invention.
  • the optical disc 100a of another embodiment may be a hybrid type optical disc in which the data area of the LO layer is all configured as a read-only area! Or, as shown in FIG.
  • the present invention can also be applied to, for example, a multilayer (multiple layer type) optical disc having three or more recording layers. Further, the present invention can be applied to other types of information recording media such as a multi-layer optical recording card. Furthermore, the present invention can also be applied to various information recording media compatible with other high density recording or high transfer rate.
  • the information recording / reproducing apparatus corresponding to, for example, a two-layer type or a single layer type optical disc has been described.
  • the present invention can also be applied to an information recording / reproducing apparatus compatible with, for example, a multilayer (multiple layer type) optical disc having three or more recording layers.
  • the present invention can also be applied to an information recording / reproducing apparatus compatible with various information recording media compatible with other high density recording or high transfer rate.
  • the present invention is not limited to the above-described embodiments, but can be appropriately changed within the scope of the claims and the entire specification without departing from the gist or concept of the invention which can be read, and information accompanying such changes.
  • a recording medium, an information recording apparatus and method, an information reproducing apparatus and method, and an information recording medium manufacturing apparatus and method are also included in the technical scope of the present invention.
  • An information recording medium, an information recording apparatus and method, an information reproducing apparatus and method, and an information recording medium manufacturing apparatus and method according to the present invention include, for example, a DVD (Digital Versatile Disc) and a BD (Blu-ray Disc). It can be used for an information recording medium such as an optical disc that can be recorded and reproduced by irradiating a laser beam such as a CD (Compact Disc), and can also be used for an information recording apparatus for the information recording medium. For example, for consumer use It can also be used in information recording devices that are mounted on various computer equipment for business use or connectable to various computer equipment.

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  • Optical Recording Or Reproduction (AREA)

Abstract

La présente invention concerne un support d’enregistrement d’informations (100) qui comprend une première couche d’enregistrement (couche L0) comprenant une première piste d’enregistrement capable d’enregistrer des informations de disque et une ou plusieurs couches secondaires d'enregistrement (couches L1) disposant chacune d'une seconde piste d'enregistrement capable d'enregistrer des informations de disque par faisceau laser qui a traversé la première couche d'enregistrement. Parmi les couches d’enregistrement secondaires, l’autre couche des couches d’enregistrement secondaires placées à côté de la première couche d’enregistrement qu’une couche 1 et au moins une couche d’enregistrement spécifique de la première couche d’enregistrement ont une région spécifique (20) qui retient un grand facteur de transmission de lumière si on le compare au facteur correspondant de la région d’enregistrement de la seconde couche d’enregistrement. Dans une région opposée (21) faisant face à la région spécifique appartenant à la couche 1 parmi les couches d’enregistrement secondaires, (i) au lieu de la seconde piste d'enregistrement, (ii) une première piste simulée d’enregistrement simulant la première piste et capable d’enregistrer des informations de gestion pour gérer au moins le support d’enregistrement des informations.
PCT/JP2006/320921 2005-10-20 2006-10-20 Support, dispositif et procede d’enregistrement d’informations, dispositif et procede de reproduction d’informations et de fabrication de support d’enregistrement correspondant WO2007046492A1 (fr)

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JP2005-305918 2005-10-20

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Publication number Priority date Publication date Assignee Title
JP2009087418A (ja) * 2007-09-28 2009-04-23 Tdk Corp 光記録媒体、光記録再生システム
WO2011032821A1 (fr) * 2009-09-18 2011-03-24 Thomson Licensing Support d’enregistrement optique hybride, enregistrable et en lecture seule

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JPH0922542A (ja) * 1995-07-05 1997-01-21 Nippon Columbia Co Ltd 多層の情報面を有する光ディスク
JPH0944898A (ja) * 1995-07-25 1997-02-14 Sony Corp 光学ディスク
JPH0950649A (ja) * 1995-08-03 1997-02-18 Matsushita Electric Ind Co Ltd 光ディスクおよび光ディスク装置
WO2001001408A1 (fr) * 1999-06-28 2001-01-04 Sony Corporation Support d'enregistrement optique et son procede de lecture
JP2001023236A (ja) * 1999-07-12 2001-01-26 Matsushita Electric Ind Co Ltd 光学情報記録媒体およびその初期化方法
JP2003006919A (ja) * 2001-06-22 2003-01-10 Matsushita Electric Ind Co Ltd 光記録媒体、および光記録媒体製造方法

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Publication number Priority date Publication date Assignee Title
JPH0922542A (ja) * 1995-07-05 1997-01-21 Nippon Columbia Co Ltd 多層の情報面を有する光ディスク
JPH0944898A (ja) * 1995-07-25 1997-02-14 Sony Corp 光学ディスク
JPH0950649A (ja) * 1995-08-03 1997-02-18 Matsushita Electric Ind Co Ltd 光ディスクおよび光ディスク装置
WO2001001408A1 (fr) * 1999-06-28 2001-01-04 Sony Corporation Support d'enregistrement optique et son procede de lecture
JP2001023236A (ja) * 1999-07-12 2001-01-26 Matsushita Electric Ind Co Ltd 光学情報記録媒体およびその初期化方法
JP2003006919A (ja) * 2001-06-22 2003-01-10 Matsushita Electric Ind Co Ltd 光記録媒体、および光記録媒体製造方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009087418A (ja) * 2007-09-28 2009-04-23 Tdk Corp 光記録媒体、光記録再生システム
WO2011032821A1 (fr) * 2009-09-18 2011-03-24 Thomson Licensing Support d’enregistrement optique hybride, enregistrable et en lecture seule
EP2302627A1 (fr) * 2009-09-18 2011-03-30 Thomson Licensing Support hybride d'enregistrement optique enregistrable et en lecture seule

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