WO2004107327A1 - 最適記録条件で多値データを記録する情報記録方法 - Google Patents
最適記録条件で多値データを記録する情報記録方法 Download PDFInfo
- Publication number
- WO2004107327A1 WO2004107327A1 PCT/JP2004/003529 JP2004003529W WO2004107327A1 WO 2004107327 A1 WO2004107327 A1 WO 2004107327A1 JP 2004003529 W JP2004003529 W JP 2004003529W WO 2004107327 A1 WO2004107327 A1 WO 2004107327A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- recording
- power
- pulse width
- information
- optimum
- Prior art date
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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
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
- G11B7/24085—Pits
- G11B7/24088—Pits for storing more than two values, i.e. multi-valued recording for data or prepits
-
- 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
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/0045—Recording
- G11B7/00456—Recording strategies, e.g. pulse sequences
Definitions
- the present invention generally relates to a method for recording information on a recording medium such as a rewritable optical disk, and more particularly, to an information recording method for recording multivalued data on a recording medium by modulating a recording mark area.
- the emission time width of the recording laser, the recording power, and the erasing power are controlled in order to form a desired recording mark.
- the recording power, the recording pulse width, and both of them are controlled according to the recording linear velocity so that high-speed recording can be performed.
- the recording condition is optimized by feeding back the reproduction result of the recorded data to the recording pulse waveform (for example, refer to Japanese Patent Application Laid-Open No. 2002-50046).
- the conventional information recording method described above is a method for setting the optimum recording condition in binary recording.
- the recording conditions are set optimally by setting the recording conditions so that the asymmetry falls within a desired value range (see FIG. 5 of Japanese Patent Application Laid-Open No. 10-1080).
- the multi-value recording method it is necessary to suppress not the deviation in time (mark length or space length) but the deviation in the «J £ direction (signal level due to mark). Therefore, in the multi-value recording method, there is a problem that the setting method of the optimum recording condition based on the asymmetry in the conventional information recording method cannot be used.
- 8 to 10 are diagrams for explaining a multi-level recording system related to the information recording method of the present invention.
- multi-value data is recorded for each recording cell having a fixed length so that the reproduction signal level changes in accordance with the multi-value data.
- the reproduced signal is sampled at a predetermined frequency (for example, at the center of a recording cell), and the multi-valued data is determined from the sampled signal level.
- a predetermined frequency for example, at the center of a recording cell
- the recording condition is optimized. The playback signal level changes linearly.
- the method of recording a CLV format at high speed by changing the reference clock cycle of the recording signal in accordance with the radial position of the disk by keeping the disk rotation speed constant is a rewritable DVD. Etc. are used in recording media.
- this method is applied to multi-level recording, as shown in Fig. 10, simply changing the reference clock in accordance with the recording speed and recording, the recording sensitivity of the optical disc is not linear with respect to the recording speed.
- short marks multi-value data "1" to "3" tend to be large.
- the relationship between the signal levels corresponding to the multi-value data changes depending on the recording speed, and it becomes necessary to learn the multi-value determination level and the waveform equalization coefficient for each recording linear speed. Therefore, at the time of reproduction, the multi-valued judgment level and the waveform equalization coefficient corresponding to the linear velocity are read and reproduced, and there is a problem that the reproduction takes much time.
- the multi-value recording method stable recording can be performed regardless of individual differences of the recording medium such as an optical disk and the information recording apparatus such as an optical disk apparatus which records information on the recording medium and changes in environmental conditions. You need to be able to do it. Also, in the multi-value recording method, when recording multi-value data having a constant recording density by the CAV method, it is possible to record information capable of obtaining a reproduction signal level substantially equal to the entire surface of the recording medium. There is a need. Disclosure of the invention
- a general object of the present invention is to provide an information recording method which substantially solves one or more problems caused by the above-mentioned limitations or disadvantages of the background art.
- an information recording method for finding an optimum recording condition when recording multi-valued data m on a recording medium includes a recording part Pw and an erasing part in a test writing area of the recording medium.
- the test pattern is recorded by sequentially changing the recording power Pw and the erasing power Pe while keeping the ratio with Pe constant, and the reproduction signal level is substantially linear with respect to the multi-value data m in the reproduction result.
- the recording power Pw and the erasing power Pe are determined as the optimum recording power and the optimum erasing power.
- an information recording method for determining an optimum recording condition when recording multi-valued data m on a recording medium includes: an erasing power P e and a recording power P w in a test writing area of the recording medium.
- the test pattern is recorded by sequentially changing the ratio P e / P w with respect to the multi-valued data m in the reproduction result. It is characterized in that it is determined.
- an information recording method for determining an optimum recording condition when recording multi-valued data m on a recording medium includes a cooling pulse width for the multi-valued data m in a test writing area of the recording medium.
- a test pattern is recorded by sequentially changing T off-m, and a cooling noise level T off-m at which a reproduction signal level becomes substantially linear with respect to the multi-valued data m is determined in accordance with the reproduction result.
- Optimal cooling nozzle It is characterized in that it is determined as a loose width.
- an information recording method for determining an optimum recording condition when recording multi-valued data m on a recording medium includes a recording pulse width T for multi-valued data in a test writing area of the recording medium.
- a test pattern is recorded by sequentially changing on-m, and based on the reproduction result, the recording pulse width T onm at which the reproduction signal level becomes substantially linear with respect to the multi-value data m is set to the optimum recording pulse width. Is determined.
- an information recording method for recording multi-value data m on a recording medium wherein the recording cycle is changed on the recording medium in accordance with a change in recording speed.
- the recording power Pw and the erasing power Pe are optimal recording power and optimal according to the recording speed. It is characterized in that it is determined as erasing power.
- an information recording method for recording multi-value data m on a recording medium wherein the recording clock cycle is varied on the recording medium according to a change in recording linear velocity.
- the test pattern is recorded by uniformly changing the cooling pulse width Toff one m or the recording pulse width Ton-m in accordance with the recording linear velocity. It is characterized in that a cooling pulse width and a recording pulse width at which a reproduction signal level becomes substantially linear with respect to the multi-value data m in a reproduction result at each recording speed are determined.
- the recording power Pw, the Pe / Pw ratio, the recording pulse width Ton-m, the cooling power are determined from the results of the trial writing on the trial writing area of the recording medium.
- a relation value y av + b (where a and b are constant values) between the recording condition y of one of the pulse widths Toff-m and the recording speed V is determined, and the recording condition y is determined according to the writing speed V. It is characterized in that recording is performed while being changed according to the relation value.
- the recording power Pw, ⁇ ⁇ Recording pulse width To n-m, the cooling pulse width To relation value between any of the recording condition y and serial velocity V of the ff-m y av 2 + b v + c a (a, b, c are constant values)
- the recording condition y is changed according to the recording linear velocity V in accordance with the relation value, and recording is performed.
- the test pattern when recording multi-valued data m on the recording medium, in the case of M-value recording, the test pattern has two symmetric multi-valued data patterns M in the longitudinal direction. It is characterized by including.
- FIG. 1 is a flowchart illustrating a process of a recording condition determining method by trial writing in the information recording method according to the first embodiment of the present invention.
- FIG. 2 is a diagram illustrating a relationship between multi-valued data and a standardized RF level in the information recording method of the first embodiment.
- FIG. 3 is a diagram showing a recording pulse waveform of the multilevel data “2”.
- Figure 4 is a graph showing changes in sigma 5 2 when the erase power P e / recording power Pw ratio by Heni spoon to record the test pattern.
- FIG. 5 is a diagram showing a relationship between multi-value data and a reproduction signal level when recorded at 51.
- FIG. 7 shows that the signal levels from 0 to 7 of the multi-valued data are reduced by changing the recording pulse width and the cooling pulse width according to the recording linear velocity while keeping the P e, P w ratio constant. It is a figure for explanation at the time of making adjustment.
- FIG. 8 is a diagram for explaining a multi-level recording method applied to the information recording method of the present invention.
- FIG. 9 is a diagram for explaining a multi-level recording method similarly applied to the information recording method of the present invention.
- FIG. 10 is a diagram for explaining a multi-level recording method similarly applied to the information recording method of the present invention.
- the test recording of the recording medium is performed by changing one of the recording conditions of the cooling pulse width ⁇ off, and the optimum recording condition is determined by paying attention to the linearity between the multi-level data and the reproduction signal level in the reproduction result. Things.
- the determination can be made by a simpler method as compared with the case where the multi-level decision error rate is measured and the optimum recording condition is determined.
- an (XYX) pattern in which the multivalued data before and after was symmetrical was prepared.
- 8-level recording there are 64 types (see Table 1).
- FIG. 2 is a diagram showing a relationship between multi-value data and a standardized RF level in the information recording method of the first embodiment. As shown in the figure, when this pattern is recorded and reproduced, the recording conditions are set so that the reproduced signal level of Y for each X becomes substantially linear.
- the optical disc which is the recording medium of the first embodiment is a phase-change optical disc that can record with laser light having a wavelength of 650 nm.
- the substrate is made of polycarbonate with a diameter of 120 mm and a thickness of 0.6 mm, and groups are formed on the surface of the substrate by injection molding.
- the group has a width of about 0.35 ⁇ m, a depth of about 30 nm, and a track pitch of 0.74 / m, and is formed as a continuous spiral from the inner circumference to the outer circumference.
- a dielectric film, a phase-change recording film made of Ag_In-Sb_Te, a dielectric film, and a reflective film are sequentially laminated to produce a phase-change optical disk.
- octal recording is performed using a recording / reproducing device with a wavelength of 650 nm and an objective lens NA of 0.65.
- the linear velocity is 2.5 m / s
- the recording clock period T is 10 ns
- the circumferential length of one cell is 0.40 jUm (16 T)
- the data length and recording pulse length of each multi-level data are shown in the table. Record under the conditions shown in 1.
- FIG. 3 is a diagram showing a recording pulse waveform of the multilevel data “2”.
- a recording pulse waveform is generated corresponding to a recording data pulse.
- the recording pulse waveform is defined by the rising pulse Ta of the recording pulse, the falling pulse Tb of the recording pulse, and the rising pulse Tc of the erasing pulse.
- Figure 4 is a diagram showing a sigma (5 2 of Heni spoon when varying the erase power P eZ recording power Pw ratio was recorded test pattern.
- 64 (XYX) patterns are used as test patterns for test writing.
- an amount sigma ⁇ 5 2 is defined by the equation shown in the following equation (1) is an index showing how much reproduced signal level for the multi-value data is set to linear.
- V m ′ Reproduction signal level of sampled multi-value data m
- V (m) m * (V7′ ⁇ V0 ′) / 7 +
- VO Target signal level of multi-value data m.
- FIG. 1 shows recording by trial writing in the information recording method according to the first embodiment of the present invention. It is a flowchart which shows the process of a condition determination method.
- step 1 the recording condition W (each power setting condition and each pulse width setting condition) recorded on the optical disc as preformat information is read.
- step 2 the recording condition change range is calculated. For example, if the ratio between the erasing power and the recording power read in step 1 was 0.46, change Range (1 ⁇ 0.1) * Calculate 0.46 to 0.41-0.51 (here, change 10% of the set value).
- step 6 samples the reproduction signal in step 7, based on the sampling result by stearyl-up 8 calculates the sigma [delta] 2, as described above, the information recording and reproducing apparatus results out the calculation Store in the storage device.
- the modulation degree ((V7'-V0 ') / V0') is small, the reproduction margin becomes small, so the modulation degree is required to be 50% or more, more preferably 60% or more. . Also, by performing trial writing before performing actual recording, it is possible to optimize the recording conditions for each thread between the optical disc and the recording / reproducing apparatus.
- test recording is performed at a plurality of recording linear velocities when recording at a constant fiber density by CAV driving, and the information recording method described in the second embodiment is used.
- the optimum recording conditions at each linear velocity are determined.
- the test pattern uses 64. (X ⁇ ) patterns.
- the erasing power Pe / recording power Pw ratio (PeZPw ratio) can be changed according to the recording speed without separately setting the recording pulse length corresponding to each multi-value data.
- a desired reproduction signal can be obtained only by changing.
- FIG. 5 is a diagram showing a relationship between multi-value data and a reproduction signal level when recorded at 51. As shown in the figure, by optimizing the erasing power PeZ recording power Pw ratio, almost the same signal level can be obtained regardless of the linear velocity.
- first-order and second-order approximate expressions are calculated from the obtained results. Which of these relations to use, choose the smaller of the square of the standard deviation in the results of the first and second order approximations. How to find the optimal Pe / Pw value at each recording speed is performed in the same procedure as in the first embodiment.
- the erasing power Pe / recording power Pw ratio is kept constant, and the recording pulse width Ton and the cooling pulse width Toff are changed in accordance with the recording linear velocity, so that multiple Adjust so that the signal level from value data "0" to "7" is linear.
- Figure 7 shows the results.
- FIG. 7 shows that the erasing power Pe / recording power Pw ratio is kept constant and the recording pulse width To n and the cooling pulse width To ff are varied according to the recording linear velocity, so that the multi-value data “0” to “ FIG. 10 is a diagram provided for explanation when the signal level up to 7 "is adjusted to be linear. In Fig. 7, the condition at the line speed of 5. O m / s is used as a reference.
- the recording pulse width ⁇ ⁇ on or the cooling pulse width ⁇ ⁇ off is uniformly set by a predetermined amount according to the recording speed without individually setting the recording pulse length corresponding to each multi-value data.
- a desired reproduction signal can be obtained only by changing.
- the method of calculating a, b of the above linear function or a, b, c of the quadratic function can be obtained in the same manner as in the second embodiment.
- Multi-level data can be determined without setting a multi-level determination threshold, a waveform equalization coefficient, and the like.
- the actual recording is performed after obtaining the optimum recording power and the optimum erasing power by trial writing.
- the information recording can be performed stably without being affected by the change of the information.
- the actual recording is performed after determining the recording power P e Z erasing power P w ratio by trial writing. It is possible to record information stably without being affected by differences and changes in environmental conditions.
- the actual recording is performed after the optimum Toff_m is obtained by trial writing, so that the optical recording is performed.
- Information recording can be performed stably without being affected by individual differences in discs and information recording devices, environmental conditions, and the like.
- the optimum recording power P w and the optimum erasing power P e at which the reproduction signal level is obtained at the same linear velocity are obtained. Since information is recorded, multi-valued data can be determined without setting parameters such as a multi-value determination threshold and a waveform equalization coefficient for each linear velocity.
- the recording is performed after obtaining the optimum Toff-m or the optimum Ton-1m at which the same reproduction signal level can be obtained at each linear velocity.
- the multi-value data can be determined without setting a multi-value determination threshold, a waveform or the like, and a coefficient for each linear velocity.
- the relational expression between the recording fiber speed and the optimum recording condition is obtained using the results of the test writing, and the relational expression is determined according to the recording linear velocity. Therefore, the recording condition is changed according to the above, so that the mark can be formed uniformly over the entire surface of the disc. Therefore, a reproduced signal level can be obtained which is substantially equal to each recording speed.
- the test pattern since the test pattern includes two symmetric multivalued data patterns M, the reproduction of multivalued data in the case of including intersymbol interference is performed. You can check even if the signal level is linear.
- a recording medium such as an optical disk and an information recording apparatus such as an optical disk apparatus for recording information on the recording medium are used.
- Information recording can be performed stably irrespective of individual differences and changes in environmental conditions.
- the multi-value recording method when multi-value data with a constant recording linear density is recorded by the CAV method, it is possible to record information that can obtain a level of a reproduction signal almost equal to the entire surface of the recording medium. .
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Abstract
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04721365A EP1628293A4 (en) | 2003-05-28 | 2004-03-17 | INFORMATION RECORDING METHOD FOR RECORDING MULTINARY DATA UNDER OPTIMUM REGISTRATION CONDITIONS |
US11/268,648 US7733750B2 (en) | 2003-05-28 | 2005-11-08 | Information recording method for recording multi-value data in optimum recording condition |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2003-150354 | 2003-05-28 | ||
JP2003150354 | 2003-05-28 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US11/268,648 Continuation US7733750B2 (en) | 2003-05-28 | 2005-11-08 | Information recording method for recording multi-value data in optimum recording condition |
Publications (1)
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WO2004107327A1 true WO2004107327A1 (ja) | 2004-12-09 |
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Family Applications (1)
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PCT/JP2004/003529 WO2004107327A1 (ja) | 2003-05-28 | 2004-03-17 | 最適記録条件で多値データを記録する情報記録方法 |
Country Status (4)
Country | Link |
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US (1) | US7733750B2 (ja) |
EP (1) | EP1628293A4 (ja) |
CN (1) | CN100356456C (ja) |
WO (1) | WO2004107327A1 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2008041235A (ja) * | 2006-07-12 | 2008-02-21 | Canon Inc | 光学的情報再生方法 |
JP5336155B2 (ja) * | 2007-12-26 | 2013-11-06 | 太陽誘電株式会社 | 光情報記録装置および方法 |
WO2009086076A2 (en) | 2007-12-28 | 2009-07-09 | Boston Scientific Scimed, Inc. | Particles for injection and processes for forming the same |
JP4786722B2 (ja) * | 2009-01-22 | 2011-10-05 | ソニーオプティアーク株式会社 | 記録装置、記録レーザパワー設定方法 |
CN104247356B (zh) * | 2012-04-19 | 2017-02-22 | 松下知识产权经营株式会社 | 多值信号发送装置、多值信号接收装置、多值信号传输系统以及多值信号传输方法 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08287467A (ja) * | 1995-04-10 | 1996-11-01 | Nikon Corp | 光記録方法 |
JPH0963056A (ja) * | 1995-08-22 | 1997-03-07 | Matsushita Electric Ind Co Ltd | 光ディスク装置 |
WO2000025308A1 (fr) * | 1998-10-26 | 2000-05-04 | Mitsubishi Chemical Corporation | Procede d'enregistrement / reproduction a plusieurs valeurs et support d'enregistrement a plusieurs valeurs et variation de phase |
JP2002183954A (ja) * | 2000-12-07 | 2002-06-28 | Ricoh Co Ltd | 光情報記録方法、光情報記録装置および光情報記録媒体の試し記録方法 |
JP2002245626A (ja) * | 2001-02-20 | 2002-08-30 | Ricoh Co Ltd | 情報記録装置及び記録媒体 |
JP2003091822A (ja) * | 2001-09-20 | 2003-03-28 | Ricoh Co Ltd | 光情報記録方法、光情報記録装置および光情報記録媒体 |
JP2003157532A (ja) * | 2001-09-04 | 2003-05-30 | Ricoh Co Ltd | 情報記録再生装置、情報記録再生方法及び相変化型記録媒体 |
JP2003162817A (ja) * | 2001-09-14 | 2003-06-06 | Ricoh Co Ltd | 光記憶媒体記録方法、光記憶媒体記録装置および光記憶媒体 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5726954A (en) * | 1995-04-10 | 1998-03-10 | Nikon Corporation | Optical recording method and apparatus |
US5841747A (en) * | 1995-08-22 | 1998-11-24 | Matsushita Electric Industrial Co., Ltd. | Optical disk device and method for setting recording power and erasing power |
JPH10106008A (ja) | 1996-09-30 | 1998-04-24 | Seiko Epson Corp | 光ディスク装置 |
JP3804810B2 (ja) | 1996-10-28 | 2006-08-02 | ソニー株式会社 | 光記録装置及び光記録方法 |
US20020031068A1 (en) * | 1997-05-01 | 2002-03-14 | U.S. Philips Corporation | Method and apparatus for writing optical recording media |
US6775218B1 (en) * | 1999-08-12 | 2004-08-10 | Lsi Logic Corporation | High density data write strategy |
US6982939B2 (en) * | 2000-02-02 | 2006-01-03 | Lsi Logic Corporation | Write compensation for data storage and communication systems |
US6940790B1 (en) * | 2000-02-02 | 2005-09-06 | Lsi Logic Corporation | Write compensation for a multi-level data storage system |
US6608807B1 (en) * | 2000-02-02 | 2003-08-19 | Calimetrics, Inc. | Generating a multilevel calibration sequence for precompensation |
JP2002050046A (ja) | 2000-08-01 | 2002-02-15 | Victor Co Of Japan Ltd | 情報記録再生装置及び情報記録方法 |
JP2002117540A (ja) * | 2000-10-10 | 2002-04-19 | Tdk Corp | 光記録媒体 |
US7082088B2 (en) * | 2001-03-30 | 2006-07-25 | Tdk Corporation | Optical recording medium and optical recording method by irradiation |
EP1246174A2 (en) * | 2001-03-30 | 2002-10-02 | TDK Corporation | Optical recording method, optical recording medium and optical irradiating time controlling device |
TWI255452B (en) * | 2002-03-18 | 2006-05-21 | Ricoh Kk | Multi-level information recording apparatus, multi-level information recording method, multi-level information recording medium and multi-level information recording-reproducing apparatus |
-
2004
- 2004-03-17 WO PCT/JP2004/003529 patent/WO2004107327A1/ja active Application Filing
- 2004-03-17 EP EP04721365A patent/EP1628293A4/en not_active Withdrawn
- 2004-03-17 CN CNB2004800146417A patent/CN100356456C/zh not_active Expired - Fee Related
-
2005
- 2005-11-08 US US11/268,648 patent/US7733750B2/en not_active Expired - Fee Related
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08287467A (ja) * | 1995-04-10 | 1996-11-01 | Nikon Corp | 光記録方法 |
JPH0963056A (ja) * | 1995-08-22 | 1997-03-07 | Matsushita Electric Ind Co Ltd | 光ディスク装置 |
WO2000025308A1 (fr) * | 1998-10-26 | 2000-05-04 | Mitsubishi Chemical Corporation | Procede d'enregistrement / reproduction a plusieurs valeurs et support d'enregistrement a plusieurs valeurs et variation de phase |
JP2002183954A (ja) * | 2000-12-07 | 2002-06-28 | Ricoh Co Ltd | 光情報記録方法、光情報記録装置および光情報記録媒体の試し記録方法 |
JP2002245626A (ja) * | 2001-02-20 | 2002-08-30 | Ricoh Co Ltd | 情報記録装置及び記録媒体 |
JP2003157532A (ja) * | 2001-09-04 | 2003-05-30 | Ricoh Co Ltd | 情報記録再生装置、情報記録再生方法及び相変化型記録媒体 |
JP2003162817A (ja) * | 2001-09-14 | 2003-06-06 | Ricoh Co Ltd | 光記憶媒体記録方法、光記憶媒体記録装置および光記憶媒体 |
JP2003091822A (ja) * | 2001-09-20 | 2003-03-28 | Ricoh Co Ltd | 光情報記録方法、光情報記録装置および光情報記録媒体 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1628293A4 * |
Also Published As
Publication number | Publication date |
---|---|
US20060067198A1 (en) | 2006-03-30 |
CN1795497A (zh) | 2006-06-28 |
CN100356456C (zh) | 2007-12-19 |
US7733750B2 (en) | 2010-06-08 |
EP1628293A4 (en) | 2007-10-17 |
EP1628293A1 (en) | 2006-02-22 |
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