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41. 发明公开

EP0330481A3 Method for detecting tracking error in optical disk system and its optical system devices therefor 失效
标题翻译：检测光盘系统跟踪误差的方法及其光学系统设备
公开(公告)号：EP0330481A3
公开(公告)日：1991-04-10
申请号：EP89301794.7
申请日：1989-02-23
申请人： FUJITSU LIMITED
发明人： Kurokawa, Kaneyuki , Kato, Masayuki , Maeda, Satoshi , Yamagishi, Fumio , Ikeda, Hiroyuki
IPC分类号： G11B7/09
CPC分类号： G11B7/09
摘要： A method for detecting a tracking error in a process of tracking a groove track on a recording medium includes the steps of: irradiating a first light spot (SP1) onto a groove track (15) on a recording medium (1) as a focused light beam for carrying out recording, reproducing, or erasing of information on the groove track of the recording medium; and irradiating a second (SP4) and a third (SP5) light spots onto an area around the groove track on the recording medium as focused light beams simultaneously with the irradiation of the first light spot, the second and third light spots are irradiated onto an area around the groove track on one side of the first light spot in a manner such that each of the second and third light spots covers both an inside and outside of the groove track.

42. 发明授权

EP0260488B1 High speed track access for optical disks using acousto-optic deflector 失效
标题翻译：使用光学偏光器的光盘高速跟踪访问
公开(公告)号：EP0260488B1
公开(公告)日：1990-12-27
申请号：EP87112328.7
申请日：1987-08-25
申请人： International Business Machines Corporation
发明人： Jipson, Victor Burr , Rugar, Daniel
IPC分类号： G11B7/085 , G11B7/00
CPC分类号： G11B11/10556 , G11B7/08547 , G11B7/09 , G11B11/10502 , G11B11/10576

43. 发明公开

EP0375266A3 Optical disc recording and/or reproduction apparatus 失效
标题翻译：光盘记录和/或复制设备
公开(公告)号：EP0375266A3
公开(公告)日：1990-11-28
申请号：EP89313052.6
申请日：1989-12-13
申请人： SONY CORPORATION
发明人： Tsukamura, Yoshihiro Sony Corporation , Eguchi, Naoya Sony Corporation , Saitou, Kimihiro Sony Corporation , Wachi, Shigeaki Sony Corporation
IPC分类号： G11B7/08 , G11B7/085
CPC分类号： G11B7/08505 , G11B7/09
摘要： A recording and/or reproduction apparatus of an optical disc (D) having recording tracks in which mirror areas are formed incorporates an optical head (10) for recording or reproducing information signal onto or from the optical disc which has an optical detector (10E) for detecting a tracking error signal by a push-pull method; a fine actuator (11B) for precisely actuating the optical head finely; detecting means (12) for detecting an output signal of the optical detector responding to reflected light from the mirror area; and driving means (19A) for driving the fine actuator in response to an output signal of the detecting means during a seeking operation.

44. 发明授权

EP0213561B1 Positioniereinrichtung für einen optischen Plattenspeicher 失效
标题翻译：用于光盘存储器的定位装置
公开(公告)号：EP0213561B1
公开(公告)日：1990-11-14
申请号：EP86111592.1
申请日：1986-08-21
申请人： SIEMENS AKTIENGESELLSCHAFT
发明人： Gottfried, Norbert, Dr. rer. nat.
IPC分类号： G11B7/08 , G11B7/09
CPC分类号： G11B7/09 , G11B7/08505

45. 发明授权

EP0115666B1 Optical focus position control in optical disc apparatus 有权
标题翻译：光盘装置中的光焦点位置控制
公开(公告)号：EP0115666B1
公开(公告)日：1990-05-02
申请号：EP83305435.6
申请日：1983-09-15
申请人： SHARP KABUSHIKI KAISHA
发明人： Fujii Yoshikazu , Deguchi, Toshihisa , Inui, Tetsuya , Yamaoka, Hideyoshi
IPC分类号： G11B7/08 , G11B7/09 , G11B13/04 , G11B11/10
CPC分类号： G11B7/093 , G11B7/09 , G11B11/10504 , G11B11/10576

46. 发明公开

EP0363422A1 INTEGRATED OPTICAL READ/WRITE HEAD AND APPARATUS INCORPORATING SAME 失效
标题翻译：集成光学读/写头和Device此头部分。
公开(公告)号：EP0363422A1
公开(公告)日：1990-04-18
申请号：EP88905541.0
申请日：1988-06-06
申请人： EASTMAN KODAK COMPANY (a New Jersey corporation)
发明人： REVELLI, Joseph, Francis, Jr.
IPC分类号： G02F1 , G11B7
CPC分类号： G02F1/2955 , G11B7/09 , G11B7/1245
摘要： L'appareil de la présente invention, destiné à l'écriture et/ou lecture d'informations sur un élément d'enregistrement, comprend une tête intégrée d'écriture/lecture optique (10) du type ayant un guide d'onde optique plan (12) et des moyens de déflection d'un faisceau guidé de rayonnement sortant du guide d'onde au niveau d'une zone de sortie et d'amener de ce faisceau sur un point focalisé sur une piste désirée de données sur l'élément d'enregistrement. Des moyens sensibles à tout déplacement de ce point focalisé à partir d'une piste désirée de données sont prévus pour varier sélectivement l'indice de réfraction effective du guide d'onde au voisinage de la zone de sortie de manière à varier la position de poursuite du point focalisé. De tels moyens consistent en une paire d'électrodes parallèles espacées (22, 24) à proximité étroite de la zone de sortie, et des moyens (20) pour produire un champ électrique entre ces électrodes, ce champ variant avec l'erreur de poursuite.

47. 发明公开

EP0361920A2 Pickup control circuit for optical disc reproducing apparatus 失效
标题翻译： AufnahmekopfsteuerschaltungfüreinGerätzum Abspielen optischer Platten。
公开(公告)号：EP0361920A2
公开(公告)日：1990-04-04
申请号：EP89309888.9
申请日：1989-09-28
申请人： KABUSHIKI KAISHA TOSHIBA
发明人： Hayashi, Yasuhiro
IPC分类号： G11B7/095 , G11B7/09 , G11B7/08
CPC分类号： G11B7/09
摘要： Apparatus for controlling the operation of a data pickup (100) in an apparatus for reproducing data from a data storage medium. The apparatus includes an actuator (200), responsive to an input signal, for positioning the data pickup (100) with respect to an information track of the data storage medium, a first generator (300) for generating an error signal representing the degree to which the data pickup (100) is displaced from a proper position with respect to the information track, the error signal including a data signal and an offset signal, a combining circuit (400) for combining an offset compensation signal and the error signal to produce a corrected error signal, a supplying circuit (500) for supplying the corrected error signal to the actuator (200) as the actuator means input signal and a second generator (600) for automatically generating the offset compensation signal from the error signal.
摘要翻译：一种用于在从数据存储介质再现数据的装置中控制数据拾取器（100）的操作的装置。所述设备包括响应于输入信号的用于相对于所述数据存储介质的信息轨道定位所述数据拾取器（100）的致动器（200），用于产生代表所述数据存储介质的程度的错误信号的第一生成器（300）数据拾取器（100）相对于信息轨道从适当位置移位，误差信号包括数据信号和偏移信号，组合电路（400），用于组合偏移补偿信号和误差信号以产生校正误差信号，用于将作为致动器装置输入信号的校正误差信号提供给致动器（200）的供给电路（500）和用于从误差信号自动生成偏移补偿信号的第二发生器（600）。

48. 发明公开

EP0350225A2 Optical head apparatus 失效
标题翻译： Anordnungfüreinen optischen Kopf。
公开(公告)号：EP0350225A2
公开(公告)日：1990-01-10
申请号：EP89306700.9
申请日：1989-06-30
申请人： Oki Electric Industry Company, Limited
发明人： Tanoshima, Katsuhide Oki Electric Industry Co. Ltd , Ohtsuka, Minoru Oki Electric Industry Co. Ltd , Nagata, Shizuo Oki Electric Industry Co. Ltd , Takahashi, Masahiro Oki Electric Industry Co. Ltd , Shimizu, Yasuo Oki Electric Industry Co. Ltd
IPC分类号： G11B7/08 , G11B7/085
CPC分类号： G11B7/12 , G11B7/08582 , G11B7/09
摘要： In optical head apparatus, an objective lens (45) is used for irradiation on a recording medium with a light beam for recording or reproducing information onto or from a recording medium, a carriage (41) is moved in the radial direction of the recording medium, an armature (44) supports the objective lens, a support member (46, 47) supports the armature against the carriage slidably in the focusing direction and rotatably in the tracking direction, and an optical system (52) is disposed at a predetermined position so that it may not move together with the carriage, and generates light supplied to the objective lens.
摘要翻译：在光头装置中，物镜（45）用于在具有用于在记录介质上记录或再现信息的光束的记录介质上照射，滑架（41）在记录介质的径向方向上移动，电枢（44）支撑物镜，支撑构件（46,47）将电枢以聚焦方向可滑动地抵靠滑架支撑，并且沿跟踪方向可旋转，光学系统（52）设置在预定位置使得其可能不与滑架一起移动，并且产生供应到物镜的光。

49. 发明公开

EP0253328A3 Light spot position control system and method by sampling servo 失效
标题翻译：光点位置控制系统及采样伺服系统的方法
公开(公告)号：EP0253328A3
公开(公告)日：1989-11-29
申请号：EP87109990.9
申请日：1987-07-10
申请人： HITACHI, LTD.
发明人： Ohtake, Masatoshi , Yonezawa, Seiji , Tsuyoshi, Toshiaki Hitachi Daiyon Kyoshinryo , Takasugi, Wasao , Takeuchi, Takashi
IPC分类号： G11B7/09 , G11B7/095
CPC分类号： G11B7/09
摘要： A light spot position control system of the invention uses an optical disc in which a servo area (ll) and a data area (l2) are alternately formed along a rotating direction of a rotary recording medium, wherein error signals obtained from the servo areas are sampled, the latest sample value is compared with at least one-preceding sample value, a check is made to see if the latest sample value is correct or incorrect, and when the latest sample value is decided to be incorrect, the preceding error signal held is directly used as a light spot position control signal without updating the current error signal holding value.

50. 发明公开

EP0327090A2 Optical recording/reproducing apparatus 失效
标题翻译： Optisches Aufnahme /Wiedergabegerät。
公开(公告)号：EP0327090A2
公开(公告)日：1989-08-09
申请号：EP89101822.8
申请日：1989-02-02
申请人： OLYMPUS OPTICAL CO., LTD.
发明人： Rokutan, Takao
IPC分类号： G11B7/00 , G11B7/09
CPC分类号： G11B7/09 , G11B7/0033
摘要： A laser beam from a laser source (1) is incident on a track (8) of an optical card (7) through an objective lens (3). Since the optical card (7) is reciprocated along a track direction, the laser beam is scanned on the track (8). The light beam reflected by the optical card (7) is guided to a photo-detector (6) through the objective lens (3) and a mirror (5). An objective lens actuator (2) and an objective lens position sensor (4) are arranged near the objective lens (3). The objective lens actuator (2) performs tracking of the laser beam by moving the objective lens (3) in a direction perpendicular to the track (8), and focuses the objective lens (3) by moving it in a direction perpendicular to the optical card (7). The lens position sensor (4) detects the displacement of the lens (3) during tracking. A track-error signal generated from the photo-detector (6) is supplied to the actuator (2) through a phase compensate circuit (23) and a power amplifier (24), thus performing tracking servo control. An output from the lens position sensor (4) is supplied to an off-track detector (25). The off-track detector (25) is constituted by a low-pass filter (51) for cutting a high-frequency component, such as noise, a DC-cut circuit (52), and a window comparator (53).
摘要翻译：来自激光源（1）的激光束通过物镜（3）入射到光卡（7）的轨道（8）上。由于光卡（7）沿轨道方向往复运动，所以在轨道（8）上扫描激光束。由光卡（7）反射的光束通过物镜（3）和反射镜（5）被引导到光检测器（6）。物镜（2）和物镜位置传感器（4）配置在物镜（3）附近。物镜致动器（2）通过在与轨道（8）垂直的方向上移动物镜（3）来执行对激光束的跟踪，并且通过使物镜（3）沿垂直于光学器件卡（7）。透镜位置传感器（4）在跟踪期间检测透镜（3）的位移。从光检测器（6）产生的轨道误差信号通过相位补偿电路（23）和功率放大器（24）提供给致动器（2），从而执行跟踪伺服控制。来自透镜位置传感器（4）的输出被提供给偏离轨道检测器（25）。离轨检测器（25）由用于切断诸如噪声的高频分量的低通滤波器（51），DC切断电路（52）和窗口比较器（53）构成。

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