专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

EP0773538B1 Objective lens driving apparatus 失效
公开(公告)号：EP0773538B1
公开(公告)日：2003-05-02
申请号：EP96117968.6
申请日：1996-11-08
申请人： KABUSHIKI KAISHA TOSHIBA
发明人： Yoshizawa, Takashi, c/o Kabushiki Kaisha Toshiba
IPC分类号： G11B7/09 , G11B7/135 , G11B19/14 , G11B7/125
CPC分类号： G11B7/13925 , G11B7/0935 , G11B7/1374 , G11B7/139 , G11B19/12 , G11B19/14 , G11B2007/0006

2. 发明授权

EP0716420B1 Information processing apparatus with means for outputting signal representing relative position between head and medium 失效
标题翻译：信息处理装置，想象具有相对头部/媒体位置的相对头部支撑层再现信号输出装置
公开(公告)号：EP0716420B1
公开(公告)日：2000-08-16
申请号：EP96200140.0
申请日：1989-09-28
申请人： CANON KABUSHIKI KAISHA
发明人： Kitai, Hiroto , Nakahara, Takashi
IPC分类号： G06K13/067 , G11B19/10 , G11B19/14 , G11B19/20
CPC分类号： G11B19/10 , G11B19/14 , G11B19/20

3. 发明授权

EP0568009B1 Recording apparatus and method for magneto-optical disk 失效
标题翻译：记录设备和方法，用于一个磁光盘
公开(公告)号：EP0568009B1
公开(公告)日：1998-10-14
申请号：EP93106810.0
申请日：1993-04-27
申请人： SONY CORPORATION
发明人： Kawashima, Tetsuji, c/o Sony Corporation , Watanabe, Tetsu, c/o Sony Corporation
IPC分类号： G11B11/10
CPC分类号： G11B19/14 , G11B7/08517 , G11B11/10508 , G11B11/10573 , G11B11/10595

4. 发明公开

EP0773538A3 Objective lens driving apparatus 失效
标题翻译： AntriebsvorrichtungfürObjektivlinse
公开(公告)号：EP0773538A3
公开(公告)日：1998-03-18
申请号：EP96117968.6
申请日：1996-11-08
申请人： KABUSHIKI KAISHA TOSHIBA
发明人： Yoshizawa, Takashi, c/o Kabushiki Kaisha Toshiba
IPC分类号： G11B7/09 , G11B7/135 , G11B19/14
CPC分类号： G11B7/13925 , G11B7/0935 , G11B7/1374 , G11B7/139 , G11B19/12 , G11B19/14 , G11B2007/0006
摘要： A lens holder (75) is provided with objective lenses (34, 35) of different types. Rotating the lens holder (75) causes one of the objective lenses (34, 35) to be placed in the optical path of the laser beam. Near one objective lens (35), there is provided a reflecting element (92) that reflects part of the laser beam directed to the objective lens (35). When the objective lens (35) is put in the optical path, the beam from the reflecting element (92) is sensed by a sensor. From the sensing result, it is judged that a specific type of objective lens (35) is in the optical path. Accordingly, there is provided an objective lens driving apparatus that includes at least two objective lenses with different numerical apertures according to optical information recording mediums complying with different standards, is capable of switching between the objective lenses according to the optical information recording medium to be used, and further has a simple structure capable of identifying the type of the objective lens selected by switching.
摘要翻译：透镜架（75）设有不同类型的物镜（34,35）。旋转透镜架（75）使物镜（34,35）中的一个被放置在激光束的光路中。在一个物镜（35）附近，设置有反射部件（92），反射部分被引导到物镜（35）。当将物镜（35）放入光路时，来自反射元件（92）的光束由传感器感测。从感测结果可以看出，特定类型的物镜（35）在光路中。因此，提供了一种物镜驱动装置，其具有根据符合不同标准的光信息记录介质，具有不同数值孔径的至少两个物镜，能够根据要使用的光信息记录介质在物镜之间切换并且还具有能够识别通过切换选择的物镜的类型的简单结构。

5. 发明公开

EP0599628A3 Recording and/or reproducing data on a disk 失效
标题翻译：在磁盘上记录和/或复制数据。
公开(公告)号：EP0599628A3
公开(公告)日：1994-09-14
申请号：EP93309367.6
申请日：1993-11-24
申请人： SONY CORPORATION
发明人： Shirane, Kyoichi, c/o Int. Property Division
IPC分类号： G11B19/14
CPC分类号： G11B19/24 , G11B19/14 , G11B20/10
摘要： When recording and/or reproducing data on a disk formatted in accordance with a constant linear velocity (CLV) system while the disk is rotated and a head is movable in a radial direction relative to the disk for scanning radially successive circular tracks thereon, and a recording and/or reproducing circuit is operable in response to a data transfer clock for causing the head to record and/or reproduce data in the tracks scanned thereby : the disk is virtually divided into a plurality of virtual zones (Fig. 1A) arranged successively in the radial direction and each comprised of a respective plurality of the tracks ; the frequency of the data transfer clock (Fig. 1B) is determined in dependence on the one of the virtual zones in which the tracks being scanned are situated at least during the initiation of a recording or reproducing operation, with the frequency determined at the initiation of a recording or reproducing operation being increased step wise for each of the successive zones considered in the radially outward direction and being maintained substantially constant at least so long as the tracks being scanned are in the one of the zones at which the recording or reproducing operation was initiated ; and the angular velocity (Fig. 1C) at which the disk is rotated during the recording or reproducing of data in the tracks within any one of the virtual zones is decreased as successive tracks, considered in the radially outward direction, are scanned during the recording or reproducing operation in which the frequency of the data transfer clock is maintained substantially constant.

6. 发明授权

EP0392020B1 MAGNETOOPTICAL RECORDING APPARATUS 失效
标题翻译：光磁记录装置。
公开(公告)号：EP0392020B1
公开(公告)日：1994-08-24
申请号：EP89907287.0
申请日：1989-06-19
申请人： SONY CORPORATION
发明人： WATANABE, Tetsu , KAWASHIMA, Tetsuji , FUJITA, Goro
IPC分类号： G11B11/10
CPC分类号： G11B33/144 , G11B11/10508 , G11B11/10513 , G11B11/1053 , G11B11/10595 , G11B19/14
摘要： A magnetooptical recording apparatus according to which light spots are successively formed on a magnetooptical disc (2) at a timing of a predetermined reference clock signal (SCK), and record data are magnetically recorded onto the disc (2) by applying a predetermined modulation magnetic field (HM) of which the polarity is inverted depending on the record data in synchronism with the reference clock signals (SCK), wherein the timing for inverting the polarity of the modulation magnetic field (HM) in response to the reference clock signals (SCK) is delayed by a predetermined amount depending upon the characteristics of the disc (2) in order to form a pit (P) at a correct position relative to the timing of the reference clock signal (SCK). Furthermore, the light beam (LA1) is controlled depending upon the temperature of the disc (2) and/or the scanning position of the light spot, in order to form the pit (P) at a correct position relative to the timing of the reference clock signal (SCK).

7. 发明授权

EP0315195B1 Optical disc player 失效
标题翻译：光盘播放器
公开(公告)号：EP0315195B1
公开(公告)日：1993-10-06
申请号：EP88118427.9
申请日：1988-11-04
申请人： SANYO ELECTRIC CO., LTD.
发明人： Okamoto, Kazuyuki , Yagi, Masashi
IPC分类号： G11B19/02 , G11B19/12 , G11B19/14 , G11B19/20
CPC分类号： G11B19/20 , G11B7/08594 , G11B19/02 , G11B19/12 , G11B19/14 , G11B19/2009

8. 发明公开

EP1569218A2 Optical disk apparatus 有权
标题翻译： OptischesPlattengerät
公开(公告)号：EP1569218A2
公开(公告)日：2005-08-31
申请号：EP05251048.4
申请日：2005-02-23
申请人： SONY CORPORATION
发明人： Nagatomo, Takashi, c/o Sony Corporation
IPC分类号： G11B19/00
CPC分类号： G11B7/0079 , G11B7/08505 , G11B7/14 , G11B19/14 , G11B19/28
摘要： An optical disk apparatus for controlling two optical pickups in an optimized way in response to operation modes for rotating the optical disk. When receiving a request for seeking one optical pickup from a HOST, a CPU judges whether to move the other optical pickup synchronously to satisfy positional restriction of the two optical pickups. Furthermore, when operating one optical pickup upon, for example, a read request. from the HOST, the CPU judges whether to move the other optical pickup to follow.
摘要翻译：一种用于响应用于旋转光盘的操作模式以优化的方式控制两个光学拾取器的光盘装置。当从HOST接收到寻求一个光学拾取器的请求时，CPU判断是否同步移动另一个光学拾取器以满足两个光学拾取器的位置限制。此外，当例如在读取请求时操作一个光学拾取器。从HOST，CPU判断是否移动其他光学拾音器。

9. 发明公开

EP0991056A2 Disk recording or playback device and method of adjusting initial position of pickup thereof 有权
标题翻译：盘记录或再现装置和方法，用于调节所述头部的开始位置
公开(公告)号：EP0991056A2
公开(公告)日：2000-04-05
申请号：EP99118899.6
申请日：1999-09-24
申请人： SANYO ELECTRIC Co., Ltd.
发明人： Ogata, Hitoshi
IPC分类号： G11B5/54 , G11B21/12
CPC分类号： G11B19/14 , G11B7/08505 , G11B21/12
摘要： A disk recording or playback device first sets a target region, and a pickup (3) is moved toward the disk inner periphery to turn on a sensor switch SW. The pickup (3) is thereafter reversely moved, and further caused to overrun for a predetermined period of time from the position where the sensor switch is turned off. The pickup (3) is returned after reading the address reached by overrunning. If the address is closer to the disk outer periphery than the target region, the overrun time is decreased, and the movement of the pickup (3) toward the lead-in area is repeated again. When the overrun time becomes not greater than a specified value and if the address then read is closer to the disk outer periphery than the target region, the direction of overrun is reversed toward the disk inner periphery. The overrun time enabling the pickup to reach the target region accurately is saved.

10. 发明授权

EP0829084B1 ADAPTIVE CONTROL OF A WRITE INHIBIT SIGNAL IN A DISK DRIVE 失效
标题翻译：写预防信号的一个板驱动自适应控制
公开(公告)号：EP0829084B1
公开(公告)日：1999-07-21
申请号：EP96915779.1
申请日：1996-05-14
申请人： Seagate Technology, Inc.
发明人： WISELOGEL, Mark
IPC分类号： G11B19/02 , G11B19/04 , G11B5/596
CPC分类号： G11B19/14 , G11B5/012 , G11B5/02 , G11B19/04 , G11B2005/0016
摘要： A method for controlling assertion of a write inhibit signal in a disk drive (20) is described. The disk drive comprises at least one rotating disk (22) having data recording surfaces, and a head (24) for each recording surface. Each head is mounted by an actuator (28) for selective positioning of the head over the respective disk surface. Each disk surface includes data tracks. The method comprises the steps of calculating and storing a write inhibit threshold value (42a) for each head in the disk drive, performing a track following operation to determine position of a preselected head relative to a preselected data track, retrieving the write inhibit threshold value for the preselected head, comparing the determined head position to the retrieved write inhibit threshold value and asserting a write inhibit signal upon a certain relationship between the determined head position and the retrieved write inhibit threshold value.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式