WO2006028115A1 - Support d'enregistrement d'informations, dispositif et procede d'enregistrement d'informations et programme informatique - Google Patents

Support d'enregistrement d'informations, dispositif et procede d'enregistrement d'informations et programme informatique Download PDF

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Publication number
WO2006028115A1
WO2006028115A1 PCT/JP2005/016394 JP2005016394W WO2006028115A1 WO 2006028115 A1 WO2006028115 A1 WO 2006028115A1 JP 2005016394 W JP2005016394 W JP 2005016394W WO 2006028115 A1 WO2006028115 A1 WO 2006028115A1
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WIPO (PCT)
Prior art keywords
recording
information
area
layer
recorded
Prior art date
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PCT/JP2005/016394
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English (en)
Japanese (ja)
Inventor
Kunihiko Horikawa
Kazuo Kuroda
Shoji Taniguchi
Masahiro Kato
Eiji Muramatsu
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Pioneer Corporation
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Publication of WO2006028115A1 publication Critical patent/WO2006028115A1/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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
    • G11B7/1267—Power calibration
    • 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

Definitions

  • Information recording medium information recording apparatus and method, and computer program
  • the present invention relates to an information recording medium such as a DVD, an information recording apparatus and method such as a DVD recorder, and a technical field of a computer program that causes a computer to function as such an information recording apparatus.
  • the two-layer type optical disc is positioned as the first layer on the most front side (that is, the side close to the optical pickup) when viewed from the laser light irradiation side when recording by the information recording apparatus. It has a first recording layer (referred to as “L0 layer” in the present application as appropriate), and further has a semitransparent reflection film located on the back side thereof (that is, on the side far from the optical pickup force).
  • the second layer it has a second recording layer (referred to as “L1 layer” in this application as appropriate) located on the back side of the transflective film via an intermediate layer such as an adhesive layer, and further on the back side.
  • L1 layer a second recording layer located on the back side of the transflective film via an intermediate layer such as an adhesive layer, and further on the back side.
  • a reflective film located on the side;
  • the L0 layer is irradiated with a laser beam for recording (or irradiated) so that the L0 layer
  • information is recorded by the irreversible change recording method or the rewritable method by heating or the like, and the laser beam is focused on the L1 layer, so that the information is collected on the L1 layer.
  • Recording by irreversible change recording by heating or the like Recording is performed by a irreversible change recording method by heating or by a rewritable method.
  • an OPC Opti
  • Opti optical disk
  • the type of information recording / reproducing apparatus the recording speed, and the like.
  • mum Power Calibration sets the optimum power for recording power. That is, recording power calibration is performed.
  • an appropriate recording operation on the optical disc can be realized. For example, when an optical disc is loaded and a write command is input, the light intensity is sequentially switched and the data for trial writing is recorded in the OPC area (PCA), so-called trial writing processing is executed.
  • PCA OPC area
  • the optimum power can also be set by OPC (so-called running OPC) performed simultaneously with the actual recording operation.
  • Patent Document 1 Japanese Patent No. 3159454
  • the recording condition of the recording layer on the back side (for example, L1 layer) when viewed from the laser light irradiation side is the same as that of the recording layer (for example, L0 layer) on the near side when viewed from the laser light irradiation side.
  • the recording layer for example, L0 layer
  • the majority of the current two-layer type optical disc is the force that records data on the recording layer on the front side after data is recorded on the recording layer on the front side.
  • the present invention has been made in view of, for example, the above-described conventional problems. It is an object of the present invention to provide an information recording medium, an information recording apparatus and method, and a computer program that enable appropriate recording power calibration even with an information recording medium having a plurality of recording layers. .
  • the information recording medium of the present invention irradiates a laser beam through the first recording layer for recording the recording information by irradiating the laser beam, and the first recording layer.
  • a second recording layer for recording the recording information wherein the first recording layer has a pre-recording area in which pre-information is recorded in advance, and the second recording layer is A calibration area for recording pattern information for obtaining the optimum power of the laser beam in the second recording layer at a position irradiated with the laser beam through the pre-recording area.
  • various types of recording information can be recorded in each of a plurality of recording layers (that is, the first recording layer and the second recording layer).
  • the plurality of recording layers may be formed in a laminated structure on one surface of the substrate, for example.
  • the first recording layer on the front side (or the near side) when viewed from the laser beam irradiation side includes a pre-recording area in which pre-information is recorded in advance.
  • a calibration area is provided in the recording area of the L1 layer corresponding to the pre-recording area (that is, the recording area irradiated with laser light through the pre-recording area).
  • This calibration area is a recording area for recording pattern information for obtaining the optimum power of the laser beam in the second recording layer.
  • the “optimum power” in the present invention is not limited to literally the most suitable recording power, but includes a wide range of recording power that can record information more appropriately during recording. It is the purpose.
  • the optimum power required here is the optimum power for recording the recording information on the second recording layer corresponding to the recording area of the first recording layer on which the recording information has been recorded.
  • the pre-recording area is not provided, it is not certain whether the recording information is recorded in the recording area of the first recording layer corresponding to the calibration area. Therefore, this calibration
  • the optimum power required by recording the pattern information in the recording area is the optimum power for recording the recording information on the second recording layer corresponding to the recording area of the first recording layer on which the recording information has been recorded.
  • the recording power is the optimum power when recording information is recorded on the second recording layer corresponding to the recording area of the first recording layer where the recording information is not recorded.
  • the pre-information is recorded in the recording area of the first recording layer corresponding to the calibration area.
  • the optimum power required here can be clearly recognized as the optimum power for recording the recording information on the second recording layer corresponding to the recording area of the first recording layer on which the recording information has been recorded. That is, if the pre-recording area in which the pre-information is recorded is provided in the first recording layer corresponding to the calibration area in the second recording layer, the information recording medium according to the present invention is It has a great advantage.
  • the recording power can be appropriately calibrated (that is, the optimum power is obtained).
  • the optimum power for recording the recording information on the second recording layer corresponding to the recording area of the first recording layer on which the recording information has been recorded can be obtained appropriately.
  • the pre-information includes information recorded by irradiating the pre-recording area with the laser beam.
  • the pre-information can be recorded in advance relatively easily and appropriately by irradiation with laser light. Even after the information recording medium is manufactured, the pre-information can be recorded relatively easily by irradiating the pre-information area with the laser light by the information recording device.
  • the pre-information includes information recorded by a previously formed emboss pit.
  • the pre-information can be recorded relatively easily and appropriately by the embossed pits formed in advance when the information recording medium is manufactured.
  • the pre-recording area is larger than the calibration area.
  • the pre-recording area and the calibration area are associated in a strict sense. Even if it is not made, or even if there is a slight positional deviation, it is possible to appropriately irradiate the laser beam to the calibration area through the pre-recording area.
  • the pre-recording area corresponds to the eccentricity between the first recording layer and the second recording layer. Only the area may be configured to be larger than the calibration area! /!
  • an information recording apparatus of the present invention includes a recording means capable of recording the recording information on the above-described information recording medium of the present invention (including various aspects thereof), Calculating means for controlling the recording means so as to record the pattern information by irradiating the laser beam to the calibration area via a pre-recording area, and obtaining an optimum power of the laser light in the second recording layer; And a control means for controlling the recording means so as to record the recording information on the second recording layer by irradiating the laser beam with the determined optimum power.
  • the optimum power (particularly, the optimum power in the second recording layer) is obtained by the operation of the calculating means. Then, by the operation of the control means, the recording means is controlled so as to irradiate the laser beam at the optimum level. As a result, the recording information can be recorded with an appropriate recording power by the operation of the recording means.
  • the pattern information is recorded by irradiating the calibration area with the laser light through the pre-recording area by the calculating means, it is possible to enjoy various benefits of the information recording medium of the present invention described above. Become.
  • the information recording apparatus of the present invention can also adopt various aspects.
  • control means records the recording information on the second recording layer after recording the recording information on the first recording layer. Control the recording means.
  • the recording information is recorded on the second recording layer after the first recording layer is recorded. Therefore, it is possible to record the recording information under the recording condition that matches the optimum power obtained by the calculating means. That is, the recording information can be recorded on the second recording layer under the same recording conditions as when the optimum power is obtained. For this reason, it is possible to improve the recording characteristics of the recorded information.
  • the information recording method of the present invention is an information provided with a recording means capable of recording the recording information on the above-described information recording medium of the present invention (including various aspects thereof).
  • An information recording method in a recording apparatus wherein the recording means is controlled to record the pattern information by irradiating the calibration area with the laser light through the pre-recording area, and the second recording layer A calculation step for obtaining an optimum power of the laser beam in the step, and a control step for controlling the recording means to record the recording information on the second recording layer by irradiating the laser beam with the obtained optimum power. Is provided.
  • the optimum power is obtained in the calculation step, and the laser light is irradiated with the obtained optimum power in the control step.
  • the recording means is controlled to record the record information. Accordingly, various benefits of the information recording apparatus of the present invention described above can be enjoyed.
  • the information recording method of the present invention can also adopt various aspects.
  • a computer program according to the present invention causes a computer to function as the above-described information recording device (including various forms thereof). More specifically, the computer is caused to function as at least a part of the recording means, calculation means, and control means in the information recording apparatus described above.
  • the computer program of the present invention if the computer program is read from a recording medium such as a ROM, a CD-ROM, a DVD-ROM, and a hard disk that stores the computer program and then executed by the computer, Alternatively, if the computer program is downloaded to a computer via communication means and then executed, the above-described information recording apparatus of the present invention can be realized relatively easily.
  • a computer program product in a computer-readable medium clearly embodies a program command executable by a computer, and the computer is connected to the above-described information recording apparatus ( (However, various forms thereof are also included). More specifically, the computer is caused to function as at least a part of the recording means, calculation means, and control means in the information recording apparatus described above.
  • the computer program product of the present invention if the computer program product is read into a computer from a recording medium such as a ROM, CD-ROM, DVD-ROM, or hard disk storing the computer program product, or
  • a recording medium such as a ROM, CD-ROM, DVD-ROM, or hard disk storing the computer program product
  • the computer program product which is a transmission wave
  • the computer program product which is a transmission wave
  • the computer program product may comprise a computer readable code (or computer readable instruction) that functions as the information recording apparatus of the present invention described above.
  • the first recording layer and the second recording layer are provided, the first recording layer includes the pre-recording area, and the second recording layer The layer contains a calibration area. Therefore, even an information recording medium having a plurality of recording layers has a great advantage that the recording power can be appropriately calibrated. In particular, the optimum power for recording the recording information on the second recording layer corresponding to the recording area of the first recording layer on which the recording information has been recorded can be obtained appropriately.
  • a recording means, a calculation means and a control means, or a calculation step and a control step are provided. Therefore, various benefits of the information recording medium according to the present invention described above can be enjoyed.
  • FIG. 1 is a schematic plan view showing a basic structure of an optical disc having a plurality of recording areas according to an embodiment of an information recording medium of the present invention, and is associated with a schematic cross-sectional view of the optical disc. It is a schematic conceptual diagram of a recording area structure in the radial direction.
  • FIG. 2 is a data structure conceptually showing an example of the data structure of the information recording medium according to the embodiment.
  • FIG. 2 is a data structure conceptually showing an example of the data structure of the information recording medium according to the embodiment.
  • FIG. 3 is a data structure diagram conceptually showing a more detailed example of the data structure of the information recording medium in the embodiment.
  • FIG. 4 is a data structure diagram conceptually showing an example of the data structure of the information recording medium in the comparative example of the information recording medium in the example.
  • FIG. 5 is a table showing conditions for recording data on the information recording medium in the present embodiment.
  • FIG. 6 is a data structure diagram conceptually showing a data structure of an information recording medium according to a first modification of the embodiment of the information recording medium of the present invention.
  • FIG. 7 is a data structure diagram conceptually showing a data structure of an information recording medium according to a second modification of the embodiment of the information recording medium of the present invention.
  • FIG. 8 is a block diagram conceptually showing the basic structure of the example of the information recording apparatus of the present invention.
  • FIG. 1 (a) is a schematic plan view showing the basic structure of an optical disc having a plurality of recording areas according to an embodiment of the information recording medium of the present invention
  • FIG. FIG. 2 is a schematic cross-sectional view of FIG. 2 and a schematic conceptual diagram of a recording area structure in the radial direction associated therewith.
  • the optical disc 100 is implemented in the recording surface on the disc main body having a diameter of about 12 cm as in the DVD, with the center hole 101 as the center.
  • the lead-in area 102, the data recording area 107 and the lead-out area 108 or the middle area 109 according to the example are provided.
  • a recording layer or the like is laminated on the transparent substrate 200 of the optical disc 100, for example.
  • tracks such as a group track and a land track are alternately provided in a spiral shape or a concentric shape around the center hole 101.
  • ECC block is a data management unit based on preformat addresses that can correct errors in recorded information.
  • the present invention is not particularly limited to an optical disc having such three areas.
  • the lead-in area 102, the lead-out area 108, or the middle area 109 does not exist, the data structure described below can be constructed. Further, as will be described later, the lead-in area 102, the lead-out area 108, or the middle area 109 may be further subdivided.
  • the optical disc 100 constitutes an example of first and second recording layers according to the present invention to be described later, for example, on a transparent substrate, as shown in FIG. 1 (b).
  • the LO layer and L1 layer are stacked.
  • recording and playing back such a two-layer optical disc 100 In Fig. 1 (b), whether the recording / reproducing is performed in the LO layer depending on which recording layer the focusing position of the laser beam LB irradiated from the upper side to the lower side is applied to.
  • recording / reproduction is performed in the L1 layer.
  • this embodiment employs a configuration in which recording is performed on the L1 layer after recording is performed on the LO layer! / Speak.
  • the optical disc 100 according to the present embodiment is not limited to the two-layer single side, that is, the dual layer, but may be the two-layer double side, that is, the dual layer double side. Furthermore, it is not limited to an optical disc having two recording layers as described above, but may be a multilayer type optical disc having three or more layers.
  • FIG. 2 is a data structure diagram conceptually showing an example of the data structure of the information recording medium according to the present embodiment.
  • the LO layer of the optical disc 100 includes a PCA (Power Calibration Area) 103, a recording management information zone (Recording Management Area) 104, a lead-in area 102, a data recording area 107 (not shown), and A middle area 109 (not shown) is provided.
  • the L1 layer includes a reserved area, a lead-out area 118, a data recording area 117 (not shown), and a middle area 119 (not shown). That is, the optical disc 100 is an opposite track path type optical disc.
  • the PCA 103 is an area used for processing for obtaining an optimum recording laser power (that is, calibration of the recording laser power).
  • the PCA 103 is used for obtaining the optimum recording laser power of the L0 layer.
  • “optimal” is not only the case where it is literally the most suitable, but also a broad meaning including the extent to which data can be recorded appropriately. More preferably, for example, as will be described later, the influence of asymmetry does not affect the recording operation, or the playback error rate and playback of recorded data. It is preferable that the jitter value power is low enough to substantially realize the state without affecting the recording operation.
  • the trial-written OPC pattern is reproduced, and the reproduced OPC pattern is sequentially sampled to obtain the optimum Recording laser power is required.
  • the OPC operation will be described in detail later.
  • the recording management information zone 104 includes various control information for controlling the recording of data on the optical disc 100 (for example, the disc status, recording strategy information, the optimum recording laser power value obtained by OPC, etc. ) Is recorded.
  • the lead-in area 102 and the lead-out area 118 are further subdivided.
  • the lead-in area 102 includes various zones (area) such as an initial zone, a pre-recording area 105, and a special border zone (Extra Border Zone).
  • the lead-out area 118 includes an area in which other data such as “00h” data is recorded, a margin area 116, and a PCA 113. The specific structure of the initial zone will be described in detail later (see Figure 4).
  • the special border zone has a size of 32 ECC blocks and is provided at the boundary between the lead-in area 102 and the data recording area 107.
  • a pre-record area 105 is provided in the lead-in area 102.
  • predetermined data for example, “00h” data or other arbitrary data
  • predetermined information may be recorded by the information recording apparatus.
  • the predetermined data may be recorded in the form of recording marks and recording pits formed by, for example, laser beam LB irradiation, or may be recorded in the form of embossed pits formed by a stamper or the like.
  • the recording area of the L1 layer corresponding to the pre-recording area 105 is provided with a PCA 113 as a specific example of the "calibration area" in the present invention.
  • This PCA113 is also used to determine the optimum recording laser power in the L1 layer, similar to the PCA103 described above.
  • a margin area 116 is provided so as to sandwich the PCA 113.
  • the margin area 116 has a size corresponding to the magnitude of the eccentricity between the LO layer and the L1 layer (for example, the eccentricity due to the bonding error or the eccentricity due to the deviation of the rotation center point of the optical disk).
  • the size of the recording area in the L1 layer including the margin area 116 and the PCA 113 is preferably the same as the size of the pre-recording area 105 in the LO layer.
  • the pre-recording area 105 has a recording area necessary for OPC in the L1 layer (that is, PCA113) and margin areas 116 corresponding to the eccentricity at both ends thereof.
  • the predetermined data is recorded in advance! / ,!
  • the eccentricity between the LO layer and the L1 layer is 0.03 mm.
  • the eccentricity is not a physical quantity that can be recognized in advance when the optical disc 100 is manufactured.
  • a pre-recording area 105 having a size may be provided in advance.
  • FIG. 3 is a data structure diagram conceptually showing a more detailed example of the data structure of the information recording medium according to the present embodiment.
  • the lead-in area 102 is further subdivided into an initial zone, a buffer zone # 0, a physical format information zone (R-Physical Format Information Zone), a reference code zone (Reference Code Zone), Includes buffer zone # 1, control data zone and special border zone.
  • a physical format information zone R-Physical Format Information Zone
  • a reference code zone Reference Code Zone
  • the control data zone is a recording area corresponding to the pre-recording area 105 in FIG. 2, for example, the standard type, disc size, and track path type applied to the optical disc 100. Etc. are recorded in advance. That is, the predetermined data as the pre-information in this case is not limited to “00h” or the like. It is preferable that the data is meaningful to appropriately indicate various control data.
  • the control data zone corresponds to the PCA 113 and the margin area 116, and the size thereof corresponds to the PCA 113 and the margin area 116 (for example, 0.36 mm or 0 as described above). 44mm etc.)
  • FIG. 4 is a data structure diagram conceptually showing an example of the data structure of the information recording medium according to the comparative example.
  • the lead-in area 102 and the lead-out area 108 of the optical disc according to the comparative example also adopt the same data structure as that of the optical disc according to the present embodiment.
  • the optical disc according to the comparative example has a data structure recommended in the DVD (particularly, DVD-RZRW) standard.
  • the optical disk according to the comparative example includes buffer zone # 1 in which data is not recorded in a part of the recording area of the LO layer corresponding to PCA113. More specifically, compared to the optical disc 100 according to the above-described embodiment, the primary zone is a relatively large area and the control zone is a relatively small area (more specifically, it extends over 105 tracks). The size is about 0.078mm in the radial direction).
  • the pre-recording area 105 (that is, the control data zone) is provided in the LO layer corresponding to the PCA 113, and predetermined data is recorded in the pre-recording area 105 in advance.
  • This can be realized by making the LO zone initial zone a relatively small recording area and the control data zone a relatively large recording area as compared with the optical disk according to the comparative example. Even if the size of the area is changed in this way, there is no problem in data recording and reproduction because the data structure itself is not changed. Further, since control information and the like are recorded in advance in the control data zone, it is necessary to provide a special pre-recording area 105.
  • the data is recorded.
  • the OPC pattern described later can be recorded on the PCA 113 corresponding to the already completed LO layer. That is, it is possible to irradiate the PCA 113 with a laser beam LB emitted from an optical pickup, which will be described later, through the pre-recording area 105 where data has been recorded.
  • the optimum recording laser power for recording data in the L 1 layer corresponding to the recording area of the LO layer where data has already been recorded can be obtained appropriately and reliably.
  • the optimum recording laser power in the L0 layer can be obtained by performing V and OPC on the PCA103.
  • margin area 116 By providing margin area 116, the influence of eccentricity can be eliminated. Specifically, if the margin area 116 is used with force, the end of the pre-recording area 105 and the end of the PCA 113 may be shifted due to the eccentricity. That is, there is a possibility that the laser beam LB cannot be irradiated to the PCA 113 via the pre-recording area 105 that should have the same track number or address value in each recording layer! However, by providing a margin area as in this embodiment, it is possible to eliminate such deviation due to eccentricity and to irradiate the PCA 113 with the laser beam LB via the pre-recording area 105.
  • margin area 116 is not necessarily required.
  • the advantage of being able to eliminate the influence of eccentricity is the advantage that certain force data is recorded. It is not always necessary from the viewpoint of being able to ask! For example, if there is no eccentricity, or if the pre-recording area 105 and the PCA 113 can be associated with high accuracy, the above-described various benefits can be enjoyed without the margin area 116.
  • Margin area 11 Even if 6 is provided, it may be configured so that it overlaps the buffer area # 1 or the special border zone that sandwiches the control data zone of each margin area 116 force LO layer.
  • FIG. 5 is a table showing conditions for recording data on the information recording medium in this embodiment.
  • the LO layer is classified into three recording conditions, conditions 1, 2 and 3.
  • the L1 layer there are three types of recording conditions, conditions 2, 3 and 4.
  • the encircled numbers shown in the figure indicate the order in which data is recorded in each recording layer.
  • the recording condition 1 in the LO layer indicates a case where data is recorded in the recording area of the LO layer corresponding to the recording area of the L1 layer where data is not recorded. In particular, even after data is recorded in the LO layer (especially when the data is played back), no data is recorded in the corresponding recording area of the L1 layer.
  • the recording condition 2 in the LO layer is the same as the recording condition 1 in the saddle point when data is recorded in the recording area in the LO layer corresponding to the recording area in the L1 layer where data is not recorded.
  • Recording condition 2 particularly shows the case where data is recorded in the corresponding recording area of the L1 layer after the data is recorded in the LO layer (for example, when the data is played back). This means that even if data is not recorded on the L1 layer corresponding to the recording, the data is recorded on the L1 layer corresponding to the case where the recorded data is reproduced. This is because the quality (for example, the asymmetry value of the reproduction signal) is different.
  • Recording condition 3 in the LO layer indicates a case where data is recorded in the recording area of the LO layer corresponding to the recording area of the L1 layer in which the data has been recorded. In other words, the data is recorded in the LO layer after the data is recorded in the L1 layer first.
  • recording condition 2 in the L1 layer indicates a case where data is recorded in the recording area of the L1 layer corresponding to the recording area of the LO layer in which data has already been recorded.
  • the data is recorded in the L1 layer after the data is recorded in the LO layer first.
  • the recording condition 3 in the L1 layer is the same as the recording condition 4 in the case where data is recorded in the recording area of the L1 layer corresponding to the recording area of the LO layer where data is not recorded.
  • This Recording condition 3 in this example shows the case where the data is recorded in the corresponding recording area of the LO layer after the data is recorded in the L1 layer (especially when the data is reproduced).
  • Recording condition 4 in the L1 layer indicates a case where data is recorded in the recording area of the L1 layer corresponding to the recording area of the LO layer where data is not recorded. In particular, even after data is recorded in the L1 layer (especially when the data is played back), no data is recorded in the corresponding LO layer recording area.
  • each of the LO layer and the L1 layer has the above three recording conditions! /.
  • the optimum recording laser power differs for each recording condition.
  • the optimum recording laser power required by the OPC performed in the PCA 103 described above corresponds to the optimum recording laser power corresponding to the recording condition 1 in the LO layer.
  • the optimum recording laser power required by the OPC performed in the PCA 113 corresponds to the optimum recording laser power corresponding to the recording condition 2 in the L1 layer.
  • the optimum recording laser power under other recording conditions in the L1 layer can also be obtained by separately providing PCA in the L1 layer in addition to the PCA113 shown in FIG. Absent.
  • control data zone As an example of the pre-recording area 105.
  • the present invention is not limited to this. If predetermined data is recorded in advance, other recording areas (for example, It is possible to use it as the pre-record area 105 even in the initial zone, buffer zone, etc.!
  • the optimum recording laser performance when data is recorded in the L1 layer corresponding to the recording area of the LO layer in which the data has already been recorded can be obtained appropriately and reliably. It is also possible to find the optimum recording laser power in the LO layer.
  • the same data structure can be adopted for a multi-layer type optical disk having a recording layer with more power than that described as a specific example of a two-layer type optical disk. That is, when viewed from the side irradiated with the laser beam LB (for example, the LO layer side), it corresponds to the calibration area in the innermost recording layer relative to the innermost recording layer.
  • a pre-recording area is provided in at least one recording layer, it belongs to the scope of the present invention. That is, even with such a configuration, various benefits of the above-described embodiments of the information recording medium of the present invention can be enjoyed.
  • FIG. 6 is a data structure diagram conceptually showing the data structure of the information recording medium according to the first modification.
  • the LO layer of the optical disc 100a includes a PCA 103, a recording management information zone 104, a lead-in area 102, a data recording area 107 (not shown), and a lead-out area not shown. 108 is provided.
  • the L1 layer includes a reserved area, a recording management information zone 114, a lead-in area 112, a data recording area 117 (not shown), and a lead-out area 118 (not shown). That is, the optical disc 100a is a parallel track path type optical disc.
  • This optical disk 100a of the parallel track path type also includes the pre-recording area 105 in the LO layer and the recording area of the L1 layer corresponding to the pre-recording area 105, as in the optical disk shown in FIG. 2 or FIG. PCA 113 and margin area 116 are provided.
  • the pre-recording area 105 may be the control data zone as described above, or may be another recording area! /.
  • the optical disc 100a according to the first modified example can also receive the same benefits as those provided by the optical disc 100 according to the present embodiment.
  • FIG. 7 is a data structure diagram conceptually showing the data structure of the information recording medium in the second modified example.
  • the LO layer of the optical disc 100b according to the second modification includes a PCA 103, a recording management information zone 104, a lead-in area 102, a data recording area 107, a reserved area, and a middle area 109. Is provided.
  • the L1 layer has a reserved area, a read-out area 118, a data recording area 117, a reserved area, and a middle area 119. It has been. That is, the optical disc 100b is an opposite track path type optical disc.
  • the optical disc 100b according to the second modification is provided with a pre-recording area 105 in the middle area 109.
  • the L1 layer PCA 113 is also provided in the middle area 109 accordingly.
  • the pre-recording area 105 is provided in the LO layer corresponding to the PCA 113 and the margin area 116, it is possible to receive the various benefits described above.
  • the pre-recording area 105 and the PCA 113 are provided in correspondence with each other, the above-described various benefits can be enjoyed. That is, if the pre-recording area 105 and the PCA 113 correspond, it may be in the lead-in area 102 (112) or the data recording area 107 (117), but the lead-out area 108 (11 Whether it is in 8), in the middle area 109 (119), or in other recording areas, it is possible to enjoy the various benefits described above.
  • FIG. 8 is a block diagram conceptually showing the basic structure of the information recording apparatus in the example.
  • the information recording device 300 is a device that records information on the optical disc 100 and reads information recorded on the optical disc 100 under the control of a CPU (drive control means) 354.
  • the information recording apparatus 300 includes an optical disc 100, a spindle motor 351, an optical pickup 352, a signal recording / reproducing means 353, a CPU (drive control means) 354, a memory 355, a data input / output control means 356, an LD driver 358, an OPC pattern. It consists of generator 359 and bus 357.
  • the spindle motor 351 rotates and stops the optical disc 100. Operates when accessing. More specifically, the spindle motor 351 is configured to rotate and stop the optical disc 100 at a predetermined speed while receiving spindle servo from a not-shown servo unit or the like.
  • the optical pickup 352 is a specific example of the “recording unit” in the present invention, and performs recording / reproduction on the optical disk 100, and includes a laser device and a lens. More specifically, the optical pickup 352 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.
  • the signal recording / reproducing means 353 performs recording / reproduction with respect to the optical disc 100 by controlling the spindle motor 351 and the optical pickup 352.
  • the memory 355 is used in general data processing in the information recording apparatus 300, such as a buffer area for recording / reproducing data and an area used as an intermediate buffer when converted into data used by the signal recording / reproducing means 353.
  • the Memory 355 is composed of a ROM area where programs for operating these recorder devices are stored, a buffer used for compression / decompression of video data, and a RAM area where variables necessary for program operations are stored. Is done.
  • the CPU (drive control means) 354 is a specific example of the “control means” in the present invention, and is connected to the signal recording / reproducing means 353 and the memory 355 via the bus 357, and instructs each control means. To control the information recording apparatus 300 as a whole. Normally, software for operating the CPU 354 is stored in the memory 355.
  • Data input / output control means 356 inputs data to be recorded on optical disc 100 from, for example, an external device. Then, the data input / output unit 356 outputs the input data to the signal recording / reproducing unit 353 via the bus 357. When data recorded on the optical disc 100 can be reproduced, the data input / output means 356 may be configured to output the reproduced data to an external output device such as a liquid crystal display.
  • the OPC pattern generator 359 is used to generate a predetermined OPC pattern as a specific example of "pattern information" in the present invention, using various strategies described later.
  • the LD driver 358 emits a laser diode or the like of the optical pickup 352 at a predetermined frequency. By oscillating, the laser beam emitted from the optical pickup 352 is controlled.
  • data is recorded on the optical disc 100 according to the above-described embodiment.
  • data is recorded in the L1 layer after data is recorded in the LO layer.
  • data can be recorded in the LO layer at any time, but when data is recorded in the L1 layer, the data is recorded in the recording area of the L1 layer corresponding to the recording area of the LO layer in which the data is recorded. Record.
  • OPC in the PCA 103 or PCA 113, the optimum recording laser power at the time of data recording can be obtained appropriately and reliably. Therefore, there is an advantage that the recording quality of data can be improved, and the reproduction quality of the recorded data can also be improved.
  • the optical pickup 352 is moved to the PCA 103 or PCA 113 provided in the lead-in area 102 under the control of the CPU 354 as one specific example of the “calculation means” in the present invention, and the OPC pattern generator 359 and the LD driver 358 According to the operation, the recording laser power is switched sequentially step by step (for example, 16 steps different from each other), and the OPC pattern is recorded in the PCA103 or PCA113.
  • a recording pattern in which short pits (marks) corresponding to 2T pulses and long pits (marks) corresponding to 8T pulses are alternately formed with no-recording sections (spaces) of the same length is given as an example. .
  • the waveform of the laser beam that realizes this recording pattern is defined by a predetermined strategy that the information recording apparatus 300 has.
  • the LD driver 358 drives the semiconductor laser in the optical pickup 352 so that the recording laser power is sequentially switched in accordance with the OPC pattern output from the OPC pattern generator 359.
  • the OPC pattern that has been trial-written to the PCA 103 or! Or PCA 113 is reproduced under the control of the CPU 354.
  • the Specifically, the peak value and the bottom value of the envelope detection of the RF signal are sampled from the RF signal input to the envelope detector (not shown).
  • the optimum recording laser power is determined. That is, from the asymmetry obtained from these peak and bottom values, for example For example, the optimum recording laser power is required so that the jitter value representing the quality of the recording characteristics is near the minimum.
  • the information recording apparatus 300 also serves as an embodiment of the information recording / reproducing apparatus. That is, the recorded information can be reproduced via the optical pickup 352 and the signal recording / reproducing means 353 (for example, a head amplifier or an RF detector not shown). Includes functions of information recording / reproducing apparatus.
  • the signal recording / reproducing means 353 for example, a head amplifier or an RF detector not shown.
  • the power described for the optical disc 100 as an example of the information recording medium and the recorder according to the optical disc 100 as an example of the information recording device is not limited to the optical disc and the recorder.
  • the present invention can also be applied to other high-density recording or various information recording media compatible with high transfer rates and their recorders.
  • the present invention is not limited to the above-described embodiments, but can be appropriately modified within the scope of the claims and the entire specification without departing from the gist or concept of the invention which can be read.
  • An information recording medium, an information recording apparatus and method, and a computer program for recording control are also included in the technical scope of the present invention.
  • the information recording medium, information recording apparatus and method, and computer program according to the present invention can be used for, for example, a high-density optical disk such as a DVD, and can also be used for an information recording apparatus such as a DVD recorder. . Further, the present invention can be used for an information recording device or the like that is mounted on or can be connected to various computer devices for consumer use or business use, for example.

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

L'invention concerne un support d'enregistrement d'informations (100) qui comporte une première couche d'enregistrement (couche L0) destinée à enregistrer des informations en étant irradiée par une lumière laser (LB) et une deuxième couche d'enregistrement (couche L1) destinée à enregistrer des informations en étant irradiée par une lumière laser traversant la première couche d'enregistrement. La première couche d'enregistrement comporte une zone de préenregistrement (105) où des préinformations sont enregistrées au préalable. La deuxième couche d'enregistrement comporte une zone (113) destinée à la correction et la zone (113) occupe une position irradiée par la lumière laser traversant la zone de préinformations. Dans la zone (113) destinée à la correction, des informations de motif sont enregistrées afin d'obtenir une puissance optimale de la lumière laser au niveau de la deuxième couche d'enregistrement.
PCT/JP2005/016394 2004-09-09 2005-09-07 Support d'enregistrement d'informations, dispositif et procede d'enregistrement d'informations et programme informatique WO2006028115A1 (fr)

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JP2004262619 2004-09-09
JP2004-262619 2004-09-09

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000311346A (ja) * 1999-04-26 2000-11-07 Ricoh Co Ltd 光ディスク記録再生装置と光ディスクの最適記録パワー値決定方法
JP2001052337A (ja) * 1999-08-06 2001-02-23 Ricoh Co Ltd 最適記録パワー値決定方法と最適記録パワー値決定装置
WO2002023542A1 (fr) * 2000-09-13 2002-03-21 Matsushita Electric Industrial Co., Ltd. Procede, support et dispositif d'enregistrement d'informations optiques
JP2005174527A (ja) * 2003-11-21 2005-06-30 Ricoh Co Ltd 記録方法、記録装置、プログラム、および記憶媒体
JP2005285254A (ja) * 2004-03-30 2005-10-13 Mitsubishi Electric Corp 光ディスクの記録方法及び光ディスク
JP2005322381A (ja) * 2004-04-09 2005-11-17 Victor Co Of Japan Ltd 情報記録媒体及び情報記録媒体の記録方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000311346A (ja) * 1999-04-26 2000-11-07 Ricoh Co Ltd 光ディスク記録再生装置と光ディスクの最適記録パワー値決定方法
JP2001052337A (ja) * 1999-08-06 2001-02-23 Ricoh Co Ltd 最適記録パワー値決定方法と最適記録パワー値決定装置
WO2002023542A1 (fr) * 2000-09-13 2002-03-21 Matsushita Electric Industrial Co., Ltd. Procede, support et dispositif d'enregistrement d'informations optiques
JP2005174527A (ja) * 2003-11-21 2005-06-30 Ricoh Co Ltd 記録方法、記録装置、プログラム、および記憶媒体
JP2005285254A (ja) * 2004-03-30 2005-10-13 Mitsubishi Electric Corp 光ディスクの記録方法及び光ディスク
JP2005322381A (ja) * 2004-04-09 2005-11-17 Victor Co Of Japan Ltd 情報記録媒体及び情報記録媒体の記録方法

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