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公开(公告)号：NZ560202A
公开(公告)日：2010-10-29
申请号：NZ56020206
申请日：2006-02-07
Applicant: SONY CORP
Inventor： FUJITA GORO , SHIMOUMA TAKASHI , NAKANO JUN , TAKAGAWA SHIGEKI , SAITO KIMIHIRO
Abstract: A recording apparatus for recording sub data to an optical-disk recording medium (100) is disclosed. The optical disk recording medium (100) includes a substrate (101) having main data recorded in the form of a combination of pits and lands on one side thereof and at least a reflective layer (102) and cover layer (103) stacked on the substrate by irradiating writing-power laser light (111) to portions corresponding to predetermined-length lands formed on the optical-disk recording medium to form marks on the reflective layer correspondingly to the predetermined-length lands. The recording apparatus comprises a recording means (OP) for recording the sub data to the optical-disk recording medium so that each of the marks is formed to such a size and depth by irradiating the writing-power laser light that the level of a reading signal will be raised at the portions where the marks are formed but will be lowered at the mark-formed portions in an optical-disk recording medium produced by physically transcribing the substrate shape of the above optical-disk recording medium. A playing apparatus for playing an optical-disk recording medium (100) is also disclosed. The optical-disk recording medium includes a substrate (101) having main data recorded in the form of a combination of pits and lands on one side thereof and at least a reflective layer(102) and cover layer (103) stacked on the substrate and to which sub data is recorded in the form of marks so formed on the reflective layer by irradiating writing-power laser light (111) to the reflective layer that the level of a reading signal will be raised at portions where the marks are formed by irradiating writing-power laser light but will be lowered at the mark-formed portions in an optical-disk recording medium produced by physically transcribing the substrate shape of the above optical-disk recording medium. The apparatus comprises a reading signal generating means for generating the reading signal by detecting a return part, from the optical-disk recording medium, of reading-power laser light having been irradiated to the optical-disk recording medium; a sub data detecting means for detecting the level of the sub data on the basis of the result of sampling the reading signal generated by the reading signal generating means at a predetermined sampling point; and a judging means for judging, based on a result of determining whether the value of the sub data detected by the sub data detecting means has a correct polarity, whether the optical-disk recording medium is a authenticated disk.
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公开(公告)号：DE60328988D1
公开(公告)日：2009-10-08
申请号：DE60328988
申请日：2003-07-04
Applicant: SONY CORP
Inventor： MIKI TAKESHI , FUJITA GORO
IPC: G11B11/105 , G11B7/007 , G11B7/24076 , G11B7/24079
Abstract: A magneto-optical recording medium in which the inside of grooves formed along recording tracks is a signal recording area in groove recording, and the domain wall displacement detection method is employed; and a curvature radius R1, in the cross section perpendicular to the recording tracks, of a shoulder portion of a land separating the grooves that is adjacent to the groove is 30 nm or less and a curvature radius R2, in the cross section perpendicular to the recording tracks, of the inside edge portion of the groove for the recording that is adjacent to the land is 20 nm or more, so that a wide recording power margin can be obtained, the jitter can be improved, and the error rate can also be improved
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公开(公告)号：DE69528574T2
公开(公告)日：2003-05-22
申请号：DE69528574
申请日：1995-08-24
Applicant: SONY CORP
Inventor： TOBITA MINORU , FUJITA GORO , OTSUKA SATOSHI , YAMAGAMI TAMOTSU
IPC: G11B7/007 , G11B11/105 , G11B13/04 , G11B19/02 , G11B19/12 , G11B19/28 , G11B20/12 , G11B21/08 , G11B27/19 , G11B27/30 , G11B27/32 , G11B7/00 , G11B20/14
Abstract: An optical disc having a plurality of substantially concentrically extending tracks has a plurality of segments each including a servo area ARs and a data area ARd. In the servo area ARs, having servo pits representing the servo information to the disc drive, there are recorded discrimination marks SGM, ADM, STM1 and STM2. These discrimination marks SGM, ADM, STM1 and STM2 afford the segment-discriminating information depending on the recording position in the servo area ARs.
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公开(公告)号：DE69331163T2
公开(公告)日：2002-04-18
申请号：DE69331163
申请日：1993-02-19
Applicant: SONY CORP
Inventor： HORIMAI HIDEYOSHI , FUJITA GORO
IPC: G11B7/0045 , G11B7/005 , G11B7/007 , G11B7/09 , G11B7/14 , G11B7/26 , G11B20/14 , H03M5/14 , G11B7/00 , G11B7/095
Abstract: An optical recording medium on which information data is to be recorded and on which an n-th recording track is located at a distance from the (n-1)th recording track preceding the n-th recording track in a recording region which is narrower than the diameter of a spot of a light beam radiated on the recording area, with recording data obtained on logical processing with recording data recorded on the (n-1)th recording track being recorded on the n-th recording track for increasing the storage capacity of information data, is disclosed. A return beam of a light beam radiated across two neighboring recording tracks on the optical recording medium is detected by a detector having first and second light receiving sections having a boundary line extending parallel to the recording track of the optical recording medium for reading out the information recorded on the optical recording medium based on the level of a sum or difference signal of the output signals of the first and second light receiving sections.
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公开(公告)号：DE69330503D1
公开(公告)日：2001-08-30
申请号：DE69330503
申请日：1993-02-19
Applicant: SONY CORP
Inventor： HORIMAI HIDEYOSHI , FUJITA GORO
IPC: G11B7/0045 , G11B7/005 , G11B7/007 , G11B7/09 , G11B7/14 , G11B7/26 , G11B20/14 , H03M5/14 , G11B7/00 , G11B7/095
Abstract: An optical recording medium on which information data is to be recorded and on which an n-th recording track is located at a distance from the (n-1)th recording track preceding the n-th recording track in a recording region which is narrower than the diameter of a spot of a light beam radiated on the recording area, with recording data obtained on logical processing with recording data recorded on the (n-1)th recording track being recorded on the n-th recording track for increasing the storage capacity of information data, is disclosed. A return beam of a light beam radiated across two neighboring recording tracks on the optical recording medium is detected by a detector having first and second light receiving sections having a boundary line extending parallel to the recording track of the optical recording medium for reading out the information recorded on the optical recording medium based on the level of a sum or difference signal of the output signals of the first and second light receiving sections.
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Patent Agency Ranking
公开(公告)号：SG71743A1
公开(公告)日：2000-04-18
申请号：SG1997004624
申请日：1997-12-23
Applicant: SONY CORP
Inventor： FUJITA GORO , TERAOKA YOSHIYUKI
IPC: G11B7/005 , G11B7/09 , G11B7/13 , G11B11/105 , G11B20/10 , G11B20/12 , G11B7/135 , G11B20/14 , G11B11/10 , G11B20/18 , G11B7/00
Abstract: An equalizer used for an optical reproducing apparatus performs an optimal equalizing operation in accordance with the spatial frequency without needing an electrical equalizer. The optical reproducing apparatus reproduces the reproducing data in the following manner. A detector is provided for receiving reflected light from a disc. The detector is divided into a plurality of light receiving areas by a line perpendicular to the light receiving direction corresponding to the disc track direction. Then, calculations are made on the outputs from the respective light receiving areas to specifically correct the spatial frequency characteristics. The calculated signal is then decoded.
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公开(公告)号：DE69322601T2
公开(公告)日：1999-05-06
申请号：DE69322601
申请日：1993-10-28
Applicant: SONY CORP
Inventor： FUJITA GORO , TOBITA MINORU
Abstract: In an optical information recording or reproducing apparatus, an asymmetry detection circuit (16) detects asymmetry values from digital RF signals reproduced from the reference area of an optical disk (3) according to a timing signal generated by a timing signal generator (13). The digital RF signals are demodulated by the viterbi algorithm by a viterbi detection circuit (17) on the basis of asymmetry values detected by an asymmetry detection circuit (16).
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公开(公告)号：DE69114980T2
公开(公告)日：1996-04-25
申请号：DE69114980
申请日：1991-09-23
Applicant: SONY CORP
Inventor： FUJITA GORO , TOYOTA KIYOSHI , IWAASA SHOJI , KASHIWAGI HIROSHI
IPC: G11B5/02 , G11B11/10 , G11B11/105 , G11B7/09
Abstract: A head position controlling device in which the head position may be controlled accurately even with a magneto-optical disc (3) having regions with different reflectance values. A gap sensor consisting of a light emitting element (5) and light receiving elements (6) and (7) are arrayed along the track direction of a magneto-optical disc (3) to prevent unequilibrium in the volume of received light at the light receiving elements (6) und (7).
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公开(公告)号：JP2014232241A
公开(公告)日：2014-12-11
申请号：JP2013113572
申请日：2013-05-30
Inventor： FUJITA GORO , HARA MASAAKI
CPC classification number: G01N21/6458
Abstract: 【課題】レーザー光を間欠的に発光させた場合に、対象物において励起した蛍光体による電気信号を最適にサンプリングして画像の劣化を抑える。【解決手段】レーザー走査型顕微鏡システムは、所定の周波数のレーザー光を出射するモードロックレーザー部と、前記モードロックレーザー部から出射されるレーザー光を所定の間欠発光周期で間欠発光させる間欠発光部と、間欠発光された前記レーザー光を受けて対象物から励起した光子を電気信号に変換する検出器と、前記電気信号を前記間欠発光周期と同期したサンプリング周期でサンプリングするA/D変換部と、を備える。【選択図】図1
Abstract translation: 要解决的问题：为了最佳地对被激发的荧光体产生的电信号进行采样，并且抑制当激光束间歇地发射时图像的劣化。解决方案：激光扫描显微镜系统包括：模式锁定激光器部分， 预定频率的激光束; 间歇发光部，其以预定的间歇发光循环来间歇地发射从所述锁模激光部发射的激光束; 检测器，通过接收间歇地发射到电信号中的激光束来转换从物体激发的光子; 以及A / D转换部分，以与间歇发光周期同步的采样周期对电信号进行采样。
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公开(公告)号：JP2013026350A
公开(公告)日：2013-02-04
申请号：JP2011158321
申请日：2011-07-19
Inventor： FUJITA GORO , MARUYAMA TSUTOMU , KURAMOTO MASARU , WATANABE HIDEKI
IPC: H01S5/065
CPC classification number: G11B7/126 , B82Y20/00 , G11B7/127 , G11B7/1275 , G11B7/128 , G11B2007/00457 , H01S5/0261 , H01S5/0602 , H01S5/06253 , H01S5/06255 , H01S5/0658 , H01S5/34333
Abstract: PROBLEM TO BE SOLVED: To provide an optical oscillator which can generate a desired pulse light frequency easily with a simple configuration, and to provide a recording device.SOLUTION: The optical oscillator and the recording device are configured to include a supersaturation absorber 2 having a double quantum well separation confinement heterostructure and applying a negative bias voltage, a self-oscillation semiconductor laser 1 including a gain section 3 for injecting a gain current, and a control unit 38 which controls the gain current being injected into the gain section 3 of the self-oscillation semiconductor laser 1 on the basis of the phase difference between the oscillation light emitted therefrom and a master clock signal, or a control unit 45 which controls the negative bias voltage being applied to the supersaturation absorber 2.
Abstract translation: 要解决的问题：提供一种能够以简单的结构容易地产生期望的脉冲光频率的光学振荡器，并提供一种记录装置。 解决方案：光学振荡器和记录装置被配置为包括具有双量子阱分离限制异质结构并施加负偏置电压的过饱和吸收器2，包括增益部分3的自激振荡半导体激光器1，用于注入 以及控制单元38，其基于从其发射的振荡光和主时钟信号之间的相位差控制增益电流注入到自激振荡半导体激光器1的增益部分3中，或者控制 单元45，其控制施加到过饱和吸收器2的负偏置电压。版权所有（C）2013，JPO和INPIT
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