WO2006075698A1 - 情報記録装置及び方法、並びに記録制御用のコンピュータプログラム - Google Patents
情報記録装置及び方法、並びに記録制御用のコンピュータプログラム Download PDFInfo
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- WO2006075698A1 WO2006075698A1 PCT/JP2006/300368 JP2006300368W WO2006075698A1 WO 2006075698 A1 WO2006075698 A1 WO 2006075698A1 JP 2006300368 W JP2006300368 W JP 2006300368W WO 2006075698 A1 WO2006075698 A1 WO 2006075698A1
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/0045—Recording
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- 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
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- 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
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- 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
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
- G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
- G11B7/08511—Methods for track change, selection or preliminary positioning by moving the head with focus pull-in only
Definitions
- the present invention relates to an information recording apparatus and method such as a DVD recorder for recording information on a multilayer information recording medium such as a two-layer DVD and CD (Compact Disc), and recording control.
- a DVD recorder for recording information on a multilayer information recording medium such as a two-layer DVD and CD (Compact Disc), and recording control.
- Information recording such as CD-ROM (Compact Disc-Read Only Memory), CD-R (Compact Disc-Recordable), DVD-ROM, DVD-R, DVD-RW, and DVD + R
- an information recording medium such as a multilayer type or dual layer type optical disk in which a plurality of recording layers are laminated or bonded on the same substrate is also available.
- a DVD recorder that records on a dual layer type, that is, a two-layer type optical disc, the foremost side (ie, the side closer to the optical pickup) when viewed from the laser beam irradiation side.
- L0 layer By concentrating the recording laser beam on the recording layer (referred to as “L0 layer” in this application as appropriate) located at, information can be irreversibly changed by heating or rewritable to the L0 layer.
- Recording layer, and recording layer (referred to as “L1 layer” as appropriate in this application) 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.
- L1 layer By collecting the laser beam, information is recorded on the L1 layer by an irreversible change recording method such as heating or a rewritable method.
- the L1 layer was irradiated through the recorded L0 layer as shown in FIG. 12 (a).
- the optimum recording power of the laser beam is 44.5 (mW: milliwatt), for example, where the jitter value on the parabola of the thin line (white triangle) in Fig. 12 (c) is minimized.
- the optimum recording power of the laser light irradiated to the L1 layer through the unrecorded L0 layer having a light transmittance different from that of the recorded L0 layer is, for example, The jitter value on the parabola of the thick line (black triangle) in Fig.
- the amplitude of the reproduced signal becomes small, for example, so that good signal quality cannot be obtained, i.e., the signal strength obtained is low.
- the recording laser beam that has passed through the L0 layer in which a recorded area and an unrecorded area are mixed on a single track is irradiated.
- the amplitude of the reproduced signal in the recorded area depends on how much the recorded L0 area or the unrecorded L0 area deviates from the center of the laser beam irradiation diameter, depending on the amount of eccentricity.
- the asymmetry value that fluctuates that is, this signal force is also obtained, has a characteristic of transitioning to one force or the other between the high level and the low level, and the laser beam irradiation diameter is completely recorded L0 If recording is not performed through the layers, playback problems may occur.
- the recording condition is that the recording end of the L1 layer is set at a position separated by a laser irradiation radius or more in order to transmit the laser beam irradiation diameter completely through the recorded L0 layer.
- a recording method based on the above-described recording requirements has been devised. Specifically, this recording method uses the dimensional error held by the L0 layer and the L1 layer shown in FIG. 4 (a) described later, and the L0 layer and the L1 layer shown in FIG. 4 (b). Is a so-called recording method that takes into account margins.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2000-311346
- Patent Document 2 Japanese Patent Laid-Open No. 2001-23237 Disclosure of the invention
- transmission region the LO layer region through which the laser light is transmitted.
- the LO layer is searched for a place where a necessary area can be secured, and this recorded state is searched.
- This area is set as the transmission area, and information is recorded in the L1 layer. Therefore, in the LO layer, it is necessary to deal with irregularly recorded or unrecorded areas, which makes it difficult to quickly and appropriately secure recording areas that meet the recording requirements. Has technical problems. Power! In other words, it has a technical problem that it becomes a bottleneck of information transfer processing and the time required for the recording operation is increased.
- the reproduction quality of the information recorded in the L1 layer by the laser light transmitted through the LO layer area in the recorded state and the laser light transmitted through the LO layer area in the unrecorded state In order to make the reproduction quality of the information recorded in the L1 layer equal, for example, the recording power of the laser light is relatively changed. Therefore, for example, a complicated recording control process such as frequently changing the recording power is required. For this reason, this complicated recording control process cannot be applied to, for example, high-speed recording, and the reproduction quality of information recorded in the L1 layer is not possible. If there is a possibility of non-uniformity! /, There is a technical problem.
- the present invention has been made in view of, for example, the conventional problems described above. For example, information can be recorded more efficiently and quickly even on an information recording medium having a plurality of recording layers. It is an object of the present invention to provide an information recording apparatus and method that make it possible, and a computer program that causes a computer to function as such an information recording apparatus. Means for solving the problem
- the information recording apparatus of the present invention includes at least a first recording layer (LO layer) capable of recording information and a second recording layer (L1 layer) capable of recording the information.
- LO layer first recording layer
- L1 layer second recording layer
- An information recording apparatus for recording the information on at least a predetermined area of the second recording layer with a laser beam transmitted through the transmission area of the first recording layer with respect to an information recording medium comprising: One laser beam (44m W) that has one characteristic that can obtain good reproduction quality (minimum jitter value) when the transmission region through which the laser beam is transmitted is in one state (recorded state), or (ii) When the transmission region is in another state (unrecorded state), the other laser beam (46 mW) having other characteristics capable of acquiring good reproduction quality (minimum jitter value) (2) Due to the change in the reproduction quality caused by the recording means for recording the information in a predetermined area of the recording layer and the part in the one state and the part in the other state in the transmission area.
- the recording means under the control of the control means, the recording means is placed in the transmission region of the first recording layer in a state of one state (recorded state) and other Information is recorded with one or other laser light in a predetermined area of the second recording layer based on a change in reproduction quality caused by a mixture of states (unrecorded states).
- the transmissive area Even if one state of the small part and most of the other states are mixed in the transmissive area, it is possible to obtain a reproduction quality that is almost or completely equal to the reproduction quality when the transmissive area is in all other states. If so, information can be recorded in a predetermined area by another laser beam. Therefore, the effect of irregular occurrence of one state or other state in the first recording layer is almost or completely eliminated, and the area allowed for reproduction quality is more efficiently secured. Is possible.
- the recording area in the first recording layer and the second recording layer is minimized.
- the recording area can be used more efficiently.
- the information recording apparatus of the present invention has an unrecorded amount indicating a size in a radial direction of an unrecorded state in the transmissive region, for example, a change in reproduction quality.
- determining means for determining whether or not the information is smaller than the predetermined amount when the unrecorded amount is determined to be smaller than the predetermined amount.
- the recording means is controlled so as to record.
- the determination means determines whether or not the size in the radial direction of, for example, an unrecorded region in the transmission region of the first recording layer is smaller than a predetermined amount.
- the “predetermined amount” according to the present invention can exist in the transmissive area while ensuring a reproduction quality that is substantially equivalent to the reproduction quality in the case where the transmissive area is all in a recorded state. This is the size of the unrecorded area in the radial direction.
- the predetermined amount is an amount sufficiently smaller than the laser irradiation diameter in the first recording layer.
- the predetermined amount can be defined based on the laser irradiation diameter.
- control means when it is determined that the unrecorded amount is not smaller than the predetermined amount, the control means adds the information to the unrecorded area in the transmissive area.
- the recording means is controlled to record.
- the waste of the recording area in the first recording layer can be minimized, and the recording area can be used more efficiently. Become a trap.
- the information recording medium includes a management information recording area capable of recording management information for managing a recording state for each region in at least the first recording layer, and the management information recording area
- An acquisition unit configured to acquire the management information recorded in the information recording area, wherein the determination unit is configured to record the unrecorded information based on the acquired management information.
- An amount may be calculated, and it may be configured to determine whether or not the unrecorded amount is smaller than the predetermined amount.
- the determination unit can determine whether or not the unrecorded amount is smaller than the predetermined amount more accurately and quickly based on the acquired management information. .
- the reproduction quality of the information recorded on the second recording layer can be made almost or completely uniform, and the time required for the recording operation can be shortened. Become.
- storage means for storing the management information, update means for updating the stored management information, and the updated management information in the management information recording area You may comprise so that the other recording means to record may be further provided.
- the management information stored in the storage unit is updated by the update unit. Therefore, it is possible to shorten the time required for the entire recording operation including the management information update process. Then, the updated management information is recorded in the management information recording area at the same time as or after the update by other recording means. Accordingly, it is possible to shorten the time required for the entire recording operation including the process of recording the management information on the information recording medium.
- the predetermined amount (for example, 20 trk) may be configured to be indicated by a data amount using a radial position in the first or second recording layer as a parameter.
- the predetermined amount includes the individual unit optical characteristics and recording characteristics of the information recording medium, the optical characteristics in one recording area of the information recording medium, and the variation in recording characteristics.
- it may be configured to be able to be determined based on at least one of the optical characteristics and recording characteristics of the information recording medium affected by various performances of the information recording apparatus.
- the recording unit or the control unit includes an optical pickup, and is affected by various performances of the information recording apparatus.
- Characteristics and recording characteristics are as follows: (i) Aperture ratio (NA) of an object lens included in the optical pickup; (ii) Refraction of an intermediate layer existing between the first recording layer and the second recording layer. And (iii) the laser beam may be determined based on the laser irradiation diameter in the first recording layer when the laser beam is focused on the second recording layer.
- the recording operation is made more accurate by the optical characteristics of the information recording medium affected by the various performances of the information recording apparatus and the predetermined amount determined based on the recording characteristics. Is possible.
- the first recording layer of the information recording medium has a spiral or concentric first track (first recording) for recording the information.
- first recording for recording the information.
- the relationship between the address and the radial position in the recording layer can be displayed), and the second recording layer has a spiral shape or a concentric shape sharing the center of rotation with the first track in order to record the information.
- a second track (which can display a relationship between an address and a radial position in the second recording layer) is formed, and the control unit further includes a predetermined margin at a radial position of the transmissive area, The recording means is controlled to record the information while setting the radial position.
- the recording means can display the relationship between the address and the radial position in the first recording layer, and the spiral or concentric first track. Record information on the first recording layer along the line.
- the recording means can display the relationship between the address and the radial position in the second recording layer and also has a spiral shape sharing the center of rotation with the first track. Or record information along a second concentric track.
- the first track is directed from one side to the other side of the inner and outer peripheral sides of the first or second recording layer of the disc-like first or second recording layer provided in the information recording medium, Conversely, the second track may be configured such that the other side force is also directed toward one side. That is, in the two-layer type or multi-layer type information recording medium, it is possible to perform continuous recording by the “opposite method” in which the recording track is directed in the opposite direction between the two recording layers. Therefore, the first If recording is continuously performed from the end of the recording layer to the start of the second recording layer, the substrate surface is changed when the recording layer as the target of the recording process or the reproduction process related to information is switched.
- the first track is directed from one side to the other of the inner and outer peripheral sides described above, and the second track is also from the one side to the other side in the same manner as the first track. It may be configured to head toward. That is, in the two-layer or multilayer information recording medium, continuous recording by the “parallel method” is possible in which the track faces the same direction between the two recording layers. In this parallel method, when recording or reproduction in the first recording layer is completed, when recording or reproduction in the second recording layer is started, for example, the optical pickup on the outermost circumference of the optical disc is again connected to the innermost circumference. Therefore, compared with the above-described object method, the first recording layer force also takes a longer time to switch to the second recording layer.
- the recording means records information while setting the radial position of the predetermined area including the predetermined margin in the radial position of the transmission area.
- the waste of the recording area in the predetermined area of the second recording layer is minimized, and the recording area is more efficiently recorded. Can be used.
- the margin amount indicating the size of the predetermined margin is (i) a dimensional error held by each of the first recording layer and the second recording layer, (ii) an eccentric amount generated based on a bonding error between the first recording layer and the second recording layer, and (iii) the laser light is irradiated so as to focus on the second recording layer.
- the irradiation position error may be determined based on at least one of the irradiation position errors.
- the recording area can be used.
- the recording means reproduces the reproduction quality of the first recording area of the second recording layer recorded through the recorded area of the first recording layer. And the reproduction quality of the second recording area of the second recording layer recorded through the unrecorded area of the first recording layer are substantially equivalent.
- the information is recorded by changing the laser power.
- the playback process should be approximately the same in the first recording area and the second recording area. Is possible.
- the reproduction quality is indicated by at least one of an asymmetry value, a jitter value, and a reproduction error rate.
- the predetermined area of the second recording layer can be set more accurately and appropriately by indicating the reproduction quality by, for example, an asymmetry value.
- the waste of the recording area in the predetermined area is minimized, and the recording area can be used more efficiently.
- the predetermined amount is approximately 20 tracks.
- the predetermined amount can be defined with high accuracy based on 20 tracks.
- the information recording method of the present invention provides an information recording medium including at least a first recording layer capable of recording information and a second recording layer capable of recording the information.
- Information in an information recording apparatus that records the information in at least a predetermined area of the second recording layer (L1 layer) by laser light transmitted through the transmission area of the first recording layer (LO layer).
- the step of recording the information on the first recording layer or the second recording layer, and an unrecorded amount indicating a size in a radial direction of an unrecorded region in the transmission region A determination step for determining whether or not the amount is smaller than a predetermined amount, and if the unrecorded amount is determined to be smaller than the predetermined amount, the recording means is controlled to record the information in the predetermined region.
- the control step is determining whether or not the amount is smaller than a predetermined amount, and if the unrecorded amount is determined to be smaller than the predetermined amount, the recording means is controlled to record the information in the predetermined region.
- the information recording method of the present invention can also adopt various aspects.
- a computer program for recording control of the present invention provides a recording control for controlling a computer provided in the above-described information recording apparatus of the present invention (including various aspects thereof).
- 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.
- the computer program of the present invention can also adopt various aspects.
- a computer program product in a computer-readable medium is executable by a computer provided in the above-described information recording apparatus (including various forms thereof) of the present invention.
- Program instructions are clearly embodied, and the computer functions as at least part of the recording means and the control means.
- the computer program product is If the computer program product is read into a computer from a storage medium such as ROM, CD-ROM, DVD-ROM, or hard disk to be stored, or the computer program product, which is a transmission wave, for example, is transmitted to the computer via communication means.
- 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 recording means and process, and the control means and process are provided. Accordingly, in the recording operation for appropriately satisfying the recording requirement, the waste of the recording area in the first recording layer and the second recording layer is minimized, and the recording area can be used more efficiently. .
- the computer since the computer functions as the above-described information recording device of the present invention, the information recording device can be used as the first recording layer while appropriately satisfying the recording requirements.
- the waste of the recording area in the second recording layer can be minimized, and the recording area can be used more efficiently.
- FIG. 1 is a schematic plan view (FIG. 1 (a)) showing a 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, a schematic cross-sectional view of the optical disc, It is a schematic conceptual diagram (Fig. 1 (b)) of the recording area structure in the radial direction associated with this.
- FIG. 2 A graph (FIG. 2 (a)) showing a specific example of the relationship between the address and the radial position in the L0 layer and the L1 layer according to the first recording layer and the second recording layer of the present invention, and other This is a graph showing a specific example (Fig. 2 (b)).
- FIG. 3 is a table schematically showing a space bitmap which is a specific example of management information of the present invention.
- FIG. 4 is a schematic diagram (FIG. 4 (a)) conceptually showing dimensional errors held by the L0 layer and the L1 layer according to the first recording layer and the second recording layer of the present invention, and the L0 layer.
- L1 layer Fig. 4 is a schematic diagram (Fig. 4 (b)) conceptually showing the amount of eccentricity generated based on the error.
- FIG. 5 Concept of the irradiation position where the laser beam is irradiated on the L1 layer according to the second recording layer of the present invention and the laser irradiation diameter where the laser beam is irradiated on the LO layer according to the first recording layer of the present invention. It is the schematic diagram shown.
- FIG. 6 is a block diagram showing a basic configuration of an information recording / reproducing apparatus and a host computer in an embodiment according to the information recording apparatus of the present invention.
- FIG. 7 is a flowchart showing a recording operation by the information recording / reproducing apparatus in the embodiment of the information recording apparatus of the present invention.
- FIG. 8 is a schematic diagram schematically showing the positional relationship between a predetermined amount of the present invention and the LO layer and L1 layer.
- FIG. 9 is a waveform diagram showing the relationship between a predetermined amount of the present invention and reproduction quality such as an asymmetry value.
- FIG. 10 is a graph showing a specific example of the relationship between a predetermined amount of the present invention and reproduction quality such as an asymmetry value.
- FIG. 11 In the comparative example, when there is a small unrecorded area in the LO layer, a schematic diagram schematically showing the recording area when the two predetermined areas 12a and 12b are formed according to the recording requirements (FIG. 11). (a)), and recording according to the present invention in the case where one predetermined area is formed according to the recording requirements based on the predetermined amount determined in accordance with the allowable amount of change indicating the change in reproduction quality.
- Fig. 11 is a schematic diagram (Fig. 11 (b)) schematically showing the region.
- FIG. 12 is a schematic diagram (FIGS. 12 (a) and 12 (b)) conceptually showing the recording requirements according to the present invention, and a graph (FIG. 12 (c)) shown numerically.
- FIG. 13 is a schematic diagram showing a problem related to a comparative example.
- the L0 layer track path that constitutes an example of the "first track” according to the present invention and the L1 that constitutes an example of the "second track” according to the present invention are applied as a specific example of the recording method. Furthermore, it goes without saying that this embodiment can also be applied to a parallel system.
- the recording power of the laser light in this embodiment is an optimum recording power when the L1 layer is irradiated with the laser light through the recorded L0 layer.
- the recording power of the laser light is optimum when the L1 layer is irradiated through the unrecorded L0 layer having a light transmittance different from that of the recorded L0 layer. Needless to say, the recording power is great.
- 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
- the optical disc 100 is implemented in the recording surface on the disc main body having a diameter of about 12 cm, for example, centering on the center hole 1 as in the case of DVD.
- An example lead-in area 101 or lead-out area 103, a data area 102, and a middle area 104 are provided.
- a recording layer such as an LO layer and an L1 layer is laminated on the transparent substrate 106 of the optical disc 100, for example.
- tracks 10 such as a groove track and a land track are alternately provided in a spiral shape or a concentric shape around the center hole 1.
- ECC block 11 is a data management unit in which recorded information can be error-corrected.
- the lead-in area 101 is provided with a control data zone CDZ that constitutes an example of the “management information recording area” according to the present invention.
- control data zone CDZ “management information” according to the present invention is recorded. This management information will be described later.
- the present invention is not particularly limited to an optical disc having such three areas.
- the lead-in area 101 or the lead-out area 103 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 or the lead-out 103 and the middle area 104 may be further subdivided.
- the optical disc 100 according to the present example 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 condensing position of the laser beam LB irradiated with the lower force directed upwards in FIG. 1 (b) is adjusted.
- Recording / reproduction in the L0 layer or recording / reproduction in the L1 layer is performed.
- the optical disc 100 according to the present embodiment may be a double-layer single side, that is, a double-layer double side, that is, not limited to a dual layer.
- the optical disc is not limited to an optical disc having two recording layers, and may be a multilayer optical disc having three or more layers. [0074] Incidentally, the recording or reproducing procedure by the opposite method in the two-layer type optical disc will be described later.
- FIG. 2 is a graph showing a specific example of the relationship between the address and the radial position in the LO layer and the L1 layer according to the first recording layer and the second recording layer of the present invention (FIG. 2 (a)).
- FIG. 2 is a graph showing another specific example (FIG. 2 (b)).
- the horizontal axis indicates the position in the radial direction
- the vertical axis indicates the address.
- the relationship between the address and the radial position in the LO layer and the L1 layer related to the first recording layer and the second recording layer of the present invention is defined based on the opposite method.
- the opposite method is more specifically described as a recording or reproducing procedure of a two-layer type optical disc.
- an optical pickup of an information recording / reproducing apparatus moves from the inner circumference side toward the outer circumference side. That is, contrary to the movement to the right of the arrow ARO in FIGS.
- the optical pickup in the L1 layer, is directed from the outer peripheral side to the inner peripheral side, that is, In this method, recording or reproduction is performed on a two-layer optical disc by moving to the left of the arrow AR1 in FIGS. 2 (a) and 2 (b).
- the optical pickup at the outermost periphery of the optical disk moves again toward the innermost periphery. Since it is only necessary to switch the focal length to the L1 layer, the LO layer force also has the advantage that the switching time to the L1 layer is shorter compared to the parallel method, so recording of large-capacity content information Widely adopted.
- the address increases in the address system based on the above-described deposit system.
- the laser beam LB is irradiated from the lower side to the upper side
- the address transition in the LO layer is indicated by the lower straight line
- the address transition in the L1 layer is , Indicated by a straight line on the upper side.
- FIG. 2 (a) first, in the LO layer, the laser light emitted from the optical pickup is reflected in the lead-in area 101-0, the data area 102-0, and the middle area.
- the address in the recording area of the optical disc 100 increases as 104-0 moves from the inner circumference side to the outer circumference side. More specifically, the focal point of the laser beam is that the address is “03 000h” (hexadecimal number display) and the radial position is “24 (mm)”. It is moved from the position (point A in Fig. 2 (a)) toward the outer periphery. The focal point of the laser beam moves to the end position of data area 102-0 (point B in Fig. 2 (a)) whose address is "22EF6h” and whose radial position is "58. l (mm)". As a result, the information recorded in the data area 102-0 of the L0 layer is recorded or reproduced.
- the address in the recording area of the optical disc 100 increases as the laser light power middle area 104-1, the data area 102-1 and the lead-out area 103-1 are moved from the outer circumference side to the inner circumference side. I will do it. More specifically, the focal point of the laser beam is the start position of the data area 102-1 in the L1 layer whose address is “FDD109h” and the radial position is “58.1 (mm)” (see FIG. 2). (D) in (a) and move toward the inner circumference. The focal point of the laser beam is moved to the end position of data area 102-1 (point C in Fig. 2 (a)) whose address is "FFCFFFh" and whose radial position is "24mm". As a result, the information recorded in the data area 102-1 of the L1 layer is recorded or reproduced.
- the address decreases in the address system based on the above-described deposit system.
- the laser beam LB is irradiated from the upper side to the lower side
- the address transition in the L0 layer is indicated by a straight line on the upper side
- the address transition in the L1 layer is Indicated by the lower straight line.
- the laser light emitted from the optical pickup is irradiated with the lead-in area 101-0, the data area 102-0, and the middle area 104.
- the address in the recording area of the optical disc 100 decreases as the inner peripheral force moves from 0 to the outer peripheral side. More specifically, the focal point of the laser beam is the opening of the data area 102-0 of the L0 layer whose address is “FFCFFFhJ and whose radial position is“ 24 (mm) ”. Move from the starting position (point A in Fig. 2 (b)) toward the outer circumference.
- the focal point of the laser beam is the end position of the data area 102-0 in the LO layer whose address is “FDD109h” and the radial position is “58.1 (mm)” (point B in Fig. 2 (b)). ), The information recorded in the data area 102-0 in the LO layer is recorded or reproduced.
- the address in the recording area of the optical disc 100 decreases as the laser light power middle area 104-1, the data area 102-1 and the lead-out area 103-1 are moved from the outer peripheral side to the inner peripheral side. I will do it. More specifically, the focal point of the laser beam is the start position of the data area 102-1 in the L1 layer whose address is “22EF6h” and the radial position is “58.1 (mm)” (FIG. 2). (D) in (b) is moved to the inner circumference side. The focal point of the laser beam is moved to the end position (point C in Fig. 2 (b)) of the L1 layer data area 102-1 with an address force of "03000h" and a radial position of "24mm". As a result, the information recorded in the data area 102-1 of the L1 layer is recorded or reproduced.
- the address value of a point at one radial position in the L0 layer according to the first recording layer of the present invention and the point value at one radial position in the L1 layer according to the second recording layer of the present invention is in the relationship of bit inversion with each other, that is, in a complement relationship.
- the complement relationship is defined by “Inv (x)”, which is a function indicating complement, as will be described later.
- addresses in the L0 layer and the L1 layer for example, a so-called sector number in which an ECC block address used as a land pre-pit (“LPP”) address is applied. It goes without saying that it may apply.
- FIG. 3 is a table schematically showing a space bitmap which is a specific example of the management information of the present invention.
- the space bitmap which is a specific example of the management information of the present invention, includes an address and a flag indicating a recorded state or an unrecorded state.
- the area from address “03000h” to “03FFFh” is in the recorded state.
- Flag “1” is set. Further, the flag “1” indicating the recorded state is set in the area from “04000h” to “04FFFh” and the area from “21000h” to “21FFFh”.
- FIG. 4 and FIG. 5 show three specific examples of relative displacements that occur in a two-layer type optical disc including the LO layer and the L1 layer according to the first recording layer and the second recording layer of the present invention.
- FIG. 4 is a schematic diagram (FIG. 4 (a)), conceptually showing dimensional errors held by the LO layer and the L1 layer, respectively, according to the first recording layer and the second recording layer of the present invention.
- Fig. 4 (b) is a schematic diagram conceptually showing the amount of eccentricity generated based on the bonding error between the LO layer and L1 layer.
- the LO layer and the L1 layer constituting the two-layer type optical disc each hold a dimensional error as a relative deviation.
- the “dimension error” is the error between the address and the radial position that the LO layer and L1 layer hold independently of each other.
- the absolute radius at the reference address of the LO layer This is the amount that occurs as the deviation between the position and the absolute radial position at the reference address of the L1 layer.
- this dimensional error is caused by each of the various processes constituting the manufacturing process. That is, the LO layer and the L1 layer are manufactured by injection molding of a resin material to a stamper manufactured based on a master disk made by a cutting machine. Therefore, (i) when making the master, there is a possibility that the master itself will hold the radius error due to the error of the radial position of the cutting machine or the variation of the track pitch. (Ii) Injection of optical disc Individual differences outside the allowable range may cause a radius error due to thermal shrinkage during molding. (iii) Since the LO layer and the LI layer are respectively created by separate stampers, there is a possibility of including a deviation in the track pitch in each recording layer.
- the dimensional error tol is the radial position of the start position (point A) of the data area 102-0 in the L0 layer whose address shown in Fig. 2 (a) is "03000h”. And the difference between the end position (point C) of the data area 102-1 in the L1 layer whose address is “FF CFFFh” and the radial position is “24 mm”.
- the allowable range of the dimensional error tol is, for example, within “20 m” in the positive and negative directions in the L0 layer, and is within “20 m” in the positive and negative directions in the L1 layer, for example. For each individual optical disc, this means that a total of “40 ⁇ mj is allowed.
- the eccentricity ro is the radial position of the start position (point A) of the data area 102-0 in the L0 layer whose address is "03000h” shown in Fig. 2 (a). And the difference between the end position (point C) of the data area 102-1 in the L1 layer whose address is “FFCFFF h” and the radial position is “24 mm”.
- the absolute radial position at the reference address of the L0 layer, and L1 may have a value of “90 ⁇ m” in the positive and negative directions.
- the laser irradiation diameter differs between the LO layer and the L1 layer due to the beam shape of the laser beam being a cone.
- the “laser irradiation diameter db” is a diameter of the laser beam focused on the L1 layer (point C) and defocused on the LO layer. Note that the radius of the laser irradiation diameter from the radial position of “C point”, which is the focal point, to the radial position of “A point” is shown.
- the laser irradiation diameter db is expressed by the following equation (10).
- L is the thickness of the intermediate layer (the layer inserted between the LO layer and L1 layer)
- NA Aperture ratio of optical system
- n Refractive index
- the laser irradiation diameter db is expressed by (i) the numerical aperture ratio of the laser beam (NA: Numerical Apertur, (ii) the refractive index of the intermediate layer existing between the LO layer and the L1 layer, and (iii) LO It is calculated based on the thickness of the intermediate layer that determines the distance between the layers and the L1 layer.
- the present embodiment is an example in which the information recording apparatus according to the present invention is applied to an information recording / reproducing apparatus for an optical disc.
- FIG. 6 is a block diagram showing the basic configuration of the information recording / reproducing apparatus and the host computer in the embodiment of the information recording apparatus of the present invention.
- the information recording / reproducing apparatus 300 has a function of recording recording data on the optical disk 100 and a function of reproducing recording data recorded on the optical disc 100.
- the internal configuration of the information recording / reproducing apparatus 300 will be described with reference to FIG.
- the information recording / reproducing apparatus 300 is an optical disc 10 under the control of a CPU (Central Processing Unit) 305 for drive.
- 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 a 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 with respect to the optical disc 100, and includes a semiconductor laser device and a 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
- the signal recording / reproducing means 302 performs recording / reproduction on 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 timing generator not shown
- the signal recording / reproducing means 302 and the optical pickup 301 constitute an example of the “recording means” according to the present invention.
- the address detection unit 303 also detects an address (address information) on the optical disc 100 using a reproduction signal power output from the signal recording / reproduction unit 302, for example, including a pre-format address signal. Further, the address detection unit 303 may be configured to be able to detect, for example, offset information pre-recorded in the control data zone.
- the address calculation unit 304 performs a calculation such as adding or subtracting an address offset value on the detected address.
- 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.
- the CPU 305 determines the arrangement of various recording areas based on the address for which the address calculation unit 304 has performed the calculation.
- the signal recording / reproducing means 302 is controlled so as to record various recording information in the various recording areas thus determined.
- software or firmware for operating the CPU 305 is stored in the memory 307.
- the CPU 305 constitutes an example of “control means” according to the present invention.
- the CPU 305 may be configured to control various means via a DSP (Digital Signal Processor).
- DSP Digital Signal Processor
- 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.
- offset information such as the offset amount (deviation amount) described above and the address offset value calculated based on the offset amount (deviation amount) is stored (stored) in the memory 307. It may be made.
- the memory 307 (402) constitutes an example of “storage means” for storing “management information” according to the present invention.
- the data input / output control means 308 controls external data input / output to / from the information recording / reproducing apparatus 300, and stores and retrieves data in / from the data buffer on the 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 to the CPU 401 an instruction by the operation button 404, for example, recording or reproduction.
- the CPU 401 transmits a control command (command) to the information recording / reproducing apparatus 300 via the data input / output unit 406 based on the instruction information from the operation control means 403, and the entire information recording / reproducing apparatus 300 is controlled. You may comprise so that it may control.
- the CPU 401 can transmit a command requesting the information recording / reproducing apparatus 300 to transmit the operation state to the host.
- the operating state of the information recording / reproducing apparatus 300 during recording and reproducing can be grasped, so that the CPU 401 can display the operating state of the information recording / reproducing apparatus 300 on the display panel 405 such as a fluorescent tube or LCD via the operation control means 403. Can be output.
- 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 a video signal from a broadcast receiving tuner or external connection terminal power on a disc and outputs the video signal 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 disc drive. Live (hereinafter referred to as “drive” as appropriate), and 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. 7 is a flowchart showing the recording operation by the information recording / reproducing apparatus in the embodiment of the information recording apparatus of the present invention.
- Step S101 when an optical disc is loaded (inserted), it is accessed as an initial operation under the control of the CPU 305, for example, by a management information recording area optical pickup such as a control data zone.
- step S102 management information indicating the addresses of the recorded and unrecorded areas is read (step S102).
- step S103 under the control of the CPU 305, it is stored by the storage means such as the read management information power memory 307 (step S103).
- the “predetermined amount” according to the present invention can exist in the transmissive region while ensuring a reproduction quality that is substantially equivalent to the reproduction quality when the transmissive region is all in one or another state. It is the size of an area in another or one state.
- This predetermined amount can be determined based on an allowable value of a change amount indicating a change in reproduction quality. This predetermined amount can be determined, for example, experimentally, empirically, theoretically, or by simulation, and is generally sufficiently smaller than the laser irradiation diameter in the LO layer.
- the L1 layer It is possible to regard the reproduction quality of the information recorded on the recording medium as being almost equivalent to the reproduction quality of the information recorded on the L1 layer for the transmission region 12 in which all the information has been recorded.
- the asymmetry value in the transmission area 12 including the unrecorded area of 20 tracks can be suppressed to a decrease of about 2 to 3% compared to the asymmetry value in the transmission area 12 in the recorded state. It is. Therefore, for example, the transparent area 12 including an unrecorded area of 20 tracks can be regarded as being almost equivalent to the transparent area 12 in a recorded state.
- FIG. 8 is a schematic diagram schematically showing the positional relationship between the predetermined amount of the present invention and the LO layer and the L1 layer.
- FIG. 9 is a waveform diagram showing the relationship between the predetermined amount of the present invention and the reproduction HF amplitude.
- FIG. 10 is a graph showing the relationship between the predetermined amount of the present invention and the reproduction quality such as the asymmetry value.
- the predetermined amount is obtained from, for example, the amplitude of the reproduced HF signal of the information recorded in the L1 layer, with the number of unrecorded tracks in the transmission region 11 as a parameter. It is determined based on the reproduction quality transition such as the asymmetry value obtained. That is, as shown in FIG. 9 (a), when all the transmissive areas 12 are already recorded, the amplitude of, for example, the reproduced HF signal of the information recorded in the L1 layer is maximum. On the other hand, as shown in FIG.
- the amplitude of, for example, a reproduction HF signal of information recorded in the L1 layer is minimum.
- the amplitude of the reproduced HF signal transitions from the maximum to the minimum with the number of unrecorded tracks as a parameter.
- the transition of the reproduction quality such as the asymmetry value of the information recorded in the L1 layer is plotted with the number of unrecorded tracks as a parameter.
- the predetermined amount is an information recording including individual recording characteristics of the optical disc, variations in recording characteristics in the recording area of one optical disc, and various performances of the optical pickup, for example. Depending on the recording characteristics of the optical disk affected by the device, it may be decided. again
- step S104 when information is recorded in the predetermined region 12 of the L1 layer, the size force of the unrecorded region in the transmission region 11 where the laser light passes through the LO layer, for example, When it is smaller than a predetermined amount such as 20 tracks (step S104: Yes), information is recorded in the predetermined area 12 of the L1 layer under the control of the CPU 305 (step S105).
- step S106 it is determined whether or not to continue the recording operation under the control of the CPU 305 (step S106). If the recording operation is not continued (step S106: No), the address of the information recorded in the L1 layer or the like is updated to the management information on the memory, and the updated management information is controlled by the optical disc control. Data zone Recorded in the management information recording area such as CDZ (step S107).
- optical disc is unloaded (ejected) (step S 108).
- step S104 when information is recorded in the predetermined area 12 of the L1 layer, the size force of the unrecorded area in the transmission area 11 through which the laser light passes through the LO layer, for example, 20 tracks If it is not smaller than the predetermined amount, that is, larger than the predetermined amount (step S104: No), it is determined under the control of the CPU 305 whether or not the force moves to the recordable area in the L1 layer (step S109).
- step S 109 when it does not move to the recordable area in the L1 layer (step S 109: No), information is recorded in the transmission area 11 of the L0 layer under the control of the CPU 305 (step S 110).
- the address of the information recorded in the L0 layer or the like is updated to the management information on the memory, and the updated management information is recorded in the management information recording area such as the control data zone CDZ of the optical disc. (Step Sl ll). Then, again, based on the management information, it is determined whether or not the size of the unrecorded area in the transmissive area 11 of the L0 layer is smaller than a predetermined amount (step S104).
- step S109 when moving to a recordable area in the L1 layer (step S109: Yes), it moves to a recordable area in the L1 layer and information is recorded ( Step S 105).
- FIG. 11 is a schematic diagram schematically showing the recording area when the two predetermined areas 12a and 12b are formed according to the recording requirements when there is a small unrecorded area in the L0 layer in the comparative example. (Fig. 11 (a)), and according to the present invention, when one predetermined area is formed according to the recording requirement based on the predetermined amount determined according to the allowable value of the variation indicating the change in reproduction quality.
- FIG. 11 is a schematic diagram (FIG. 11 (b)) schematically showing the recording area.
- the control means under the control of the control means, for example, the size of the unrecorded area in the transmission area of the LO layer and the amount of change indicating the change in the reproduction quality. Recording is performed based on a comparison determination with a predetermined amount determined according to the allowable value.
- the recording is not performed based on such a predetermined amount, there is a possibility that the waste of the recording area for satisfying the recording requirement described above may be increased. More specifically, as shown in FIG. 11A, for example, in an actual recording operation, a small unrecorded area may be unevenly distributed in the LO layer. In this case, in the comparative example, in order to satisfy the recording requirement, the laser beam transmitted through the recorded region sandwiching the unrecorded region of the LO layer is prevented so that the laser beam does not transmit through the unrecorded region of the LO layer. Only by this, recording is performed on the L1 layer.
- the recording area must be divided into the predetermined area 12a and the predetermined area 12b for recording. I must. For this reason, an area that cannot be recorded is generated between the two, and the recording area of the L1 layer is wasted.
- the control means under the control of the control means, for example, the size of the unrecorded area in the transmission area of the LO layer and the change in the reproduction quality are changed. Recording is performed based on a comparison determination with a predetermined amount determined according to an allowable value of the change amount indicating
- the size of the unrecorded area of the LO layer shows a change in reproduction quality that is sufficiently smaller than the diameter of the laser beam irradiated on the LO layer. If it is an amount that satisfies the allowable amount of change, it is possible to record through the unrecorded area of the LO layer. More specifically, for example, as shown in FIG.
- the reproduced HF waveform of this information has the waveform shape shown in FIG.
- the reproduction characteristics such as the asymmetry value of the L1 layer calculated from this reproduction HF waveform take the values shown in FIG.
- the playback quality of the information recorded on the L1 layer is the playback quality of the information recorded through the recorded LO layer. It can be said that they can be regarded as equivalent. Therefore, as shown in FIG. 11 (b), for example, recording can be performed on the L1 layer even with laser light that has passed through a small unrecorded area of the LO layer of about 20 tracks. As a result, for example, the waste of the recording area in the L1 layer is minimized, and the recording area can be used more efficiently. That is, as shown in the predetermined area 12 in FIG. 11 (b), it is possible to perform continuous recording in a wider area in the L1 layer, minimizing waste of recording time and recording area. Therefore, it is possible to use the recording area more efficiently.
- L1 is transmitted by the laser beam that has passed through the LO layer in the recorded state.
- the recording power of the laser beam Is relatively changed. Accordingly, for example, some complicated recording control processing such as changing the recording power frequently is required, and the time required for the recording operation increases. Power! For example, in the case of high-speed recording, this complicated recording control process cannot be handled, and the reproduction quality of information recorded in the L1 layer may be non-uniform.
- the size of the region in another state such as an unrecorded state in the transmission region of the LO layer is small. It is determined whether it is smaller than the predetermined amount. Therefore, it is possible to eliminate the effect of irregular occurrence of recorded or unrecorded areas in the LO layer, and more efficiently secure areas that adequately meet the recording requirements.
- Recording can be performed by a recording operation using a laser beam that has passed through the LO layer region including a predetermined amount determined according to an allowable value of the amount of change indicating a change in reproduction quality, that is, a recording operation based on the predetermined amount. It becomes possible to secure the area of the L1 layer more efficiently.
- the waste of the recording area in the LO layer and the L1 layer is minimized, and more.
- the recording area can be used efficiently. Furthermore, since complicated recording control processing such as changing the recording power frequently can be omitted as much as possible, the time required for the recording operation can be shortened. Since, for example, this high-speed recording does not require this complicated recording control processing, it is possible to make the reproduction quality of the information recorded in the L1 layer almost or completely uniform.
- this is more effective in a recording system in which recording is performed alternately at fixed lengths in two recording areas facing each other in the LO layer and the L1 layer.
- the recording area between the predetermined area 12a and the predetermined area 12b is recorded when recording on the L1 layer through the small unrecorded area of the LO layer. Waste is minimized and the recording area can be used more efficiently.
- an information recording / reproducing apparatus for additional recording such as a DVD-R recorder or a DVD + R recorder
- the present invention can be applied to an information recording / reproducing apparatus for rewriting such as a DVD-RW recorder or a DVD + RW recorder. Further, the present invention can be applied to an information recording / reproducing apparatus for large capacity recording using a blue laser for recording / reproducing.
- the information recording apparatus and method and the computer program for recording control according to the present invention can be used for, for example, a multilayer optical disk such as a DVD, and can also be used for an information recording apparatus such as a DVD recorder. is there. Further, the present invention can also be used for an information recording device or the like that is mounted on various consumer or commercial computer devices or can be connected to various computer devices.
Abstract
Description
Claims
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EP06711653A EP1837865A4 (en) | 2005-01-14 | 2006-01-13 | METHOD AND DEVICE FOR RECORDING DATA AND COMPUTER PROGRAM FOR CONTROLLING RECORDING |
JP2006552980A JP4749343B2 (ja) | 2005-01-14 | 2006-01-13 | 情報記録装置及び方法、並びに記録制御用のコンピュータプログラム |
CN2006800019124A CN101103394B (zh) | 2005-01-14 | 2006-01-13 | 信息记录装置和方法以及用于记录控制的计算机程序 |
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WO2008069435A1 (en) * | 2006-12-05 | 2008-06-12 | Samsung Electronics Co., Ltd. | Multi-layered optical recording medium, address assignment method for multi-layered optical recording medium, apparatus and method of reproducing and method of recording |
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EP1785986A4 (en) * | 2004-08-30 | 2008-08-20 | Pioneer Corp | INFORMATION RECORDING DEVICE AND COMPUTER PROGRAM |
DE102009009263A1 (de) * | 2009-02-17 | 2010-08-19 | Giesecke & Devrient Gmbh | Verfahren zur Herstellung einer ein Fenster enthaltenden Abschlußschicht für einen tragbaren Datenträger und Abschlußschicht |
US9448619B1 (en) | 2011-11-30 | 2016-09-20 | Google Inc. | Video advertisement overlay system and method |
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EP1231601A2 (en) | 2001-02-09 | 2002-08-14 | Pioneer Corporation | Information recording apparatus |
JP2002237050A (ja) * | 2001-02-09 | 2002-08-23 | Pioneer Electronic Corp | 情報記録装置 |
Cited By (2)
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WO2008069435A1 (en) * | 2006-12-05 | 2008-06-12 | Samsung Electronics Co., Ltd. | Multi-layered optical recording medium, address assignment method for multi-layered optical recording medium, apparatus and method of reproducing and method of recording |
US7864636B2 (en) | 2006-12-05 | 2011-01-04 | Samsung Electronics Co., Ltd. | Multi-layered optical recording medium, address assignment method for multi-layered optical recording medium, apparatus and method of reproducing and method of recording |
Also Published As
Publication number | Publication date |
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KR100918266B1 (ko) | 2009-09-18 |
US7885162B2 (en) | 2011-02-08 |
KR20070102550A (ko) | 2007-10-18 |
EP1837865A1 (en) | 2007-09-26 |
JPWO2006075698A1 (ja) | 2008-08-07 |
US20080043584A1 (en) | 2008-02-21 |
CN101103394B (zh) | 2010-06-16 |
EP1837865A4 (en) | 2008-12-17 |
JP4749343B2 (ja) | 2011-08-17 |
TW200643928A (en) | 2006-12-16 |
TWI351691B (en) | 2011-11-01 |
CN101103394A (zh) | 2008-01-09 |
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