公开(公告)号：US5978330A

公开(公告)日：1999-11-02

申请号：US693700

申请日：1996-08-07

申请人： Toru Ikeda ,  Masateru Sasaki ,  Akira Minami ,  Nobuhiko Isato ,  Shigeru Arai ,  Takayuki Kawabe

发明人： Toru Ikeda ,  Masateru Sasaki ,  Akira Minami ,  Nobuhiko Isato ,  Shigeru Arai ,  Takayuki Kawabe

IPC分类号： G11B7/085 ,  G11B7/13 ,  G11B19/12 ,  G11B27/28 ,  G11B7/00

CPC分类号： G11B7/08529 ,  G11B19/12 ,  G11B7/08582 ,  G11B7/08588

摘要： There is provided an optical storage device that can position a lens carriage and objective lens even when position sensors for the lens carriage and objective lens are excluded in an effort to make an optical disk unit thinner. In an optical storage device according to the first aspect of the present invention, when a seek of the carriage relative to an optical disk is started, the carriage is accelerated smoothly, decelerated smoothly, and thus positioned on a target track. The vibration of a lens actuator on the carriage occurring during seek can be minimized, and the lens actuator is locked substantially in the center of the carriage. According to the second aspect, during a seek operation of the carriage, a false lens signal equivalent to a lens signal used to lock the lens actuator in the center of the carriage is produced using the envelope of a tracking error signal obtained from reflected light of the light beam emanating from the optical disk. With the false lens signal, the lens actuator is locked in the center of the carriage.

摘要翻译： 提供了一种光学存储装置，即使在排除透镜滑架和物镜的位置传感器以致使光盘单元更薄时，其也可以定位透镜滑架和物镜。 在根据本发明第一方面的光存储装置中，当开始相对于光盘的移动搜索时，滑架平滑地加速，平滑地减速，因此位于目标轨道上。 可以使在寻道期间发生的滑架上的透镜致动器的振动最小化，并且镜头致动器基本上被锁定在滑架的中心。 根据第二方面，在滑架的寻道操作期间，使用与用于将镜头致动器锁定在滑架中心的透镜信号相当的假透镜信号，使用从反射光的反射光获得的跟踪误差信号的包络 从光盘发出的光束。 使用错误的镜头信号，镜头执行器被锁定在托架的中心。

公开(公告)号：US06292444B1

公开(公告)日：2001-09-18

申请号：US09246441

申请日：1999-02-08

申请人： Toru Ikeda ,  Masateru Sasaki ,  Akira Minami ,  Nobuhiko Isato ,  Shigeru Arai

发明人： Toru Ikeda ,  Masateru Sasaki ,  Akira Minami ,  Nobuhiko Isato ,  Shigeru Arai

IPC分类号： G11B700

CPC分类号： G11B7/08529 ,  G11B7/08582 ,  G11B7/08588 ,  G11B19/12

摘要： There is provided an optical storage device that can position a lens carriage and objective lens even when position sensors for the lens carriage and objective lens are excluded in an effort to make an optical disk unit thinner. When a seek of the carriage relative to an optical disk is started, the carriage is accelerated smoothly, decelerated smoothly, and thus positioned on a target track. The vibration of a lens actuator on the carriage occurring during seek can be minimized, and the lens actuator is locked substantially in the center of the carriage. During a seek operation of the carriage, a false lens signal equivalent to a lens signal used to lock the lens actuator in the center of the carriage is produced using the envelope of a tracking error signal obtained from reflected light of the light beam emanating from the optical disk. With the false lens signal, the lens actuator is locked in the center of the carriage.

摘要翻译： 提供了一种光学存储装置，即使在排除透镜滑架和物镜的位置传感器以致使光盘单元更薄时，其也可以定位透镜滑架和物镜。 当启动相对于光盘的滑架的搜索时，滑架被平滑加速地加速，平滑地减速，从而位于目标轨道上。 可以使在寻道期间发生的滑架上的透镜致动器的振动最小化，并且镜头致动器基本上被锁定在滑架的中心。 在托架的寻道操作期间，使用从透镜驱动器的反射光获得的跟踪误差信号的包络线，产生与用于将透镜致动器锁定在托架中心的透镜信号相当的假透镜信号 光盘。 使用错误的镜头信号，镜头执行器被锁定在托架的中心。

公开(公告)号：US5142520A

公开(公告)日：1992-08-25

申请号：US372523

申请日：1989-06-28

申请人： Shigenori Yanagi ,  Akira Minami ,  Masateru Sasaki ,  Shigeru Arai ,  Toshitaka Iwamoto ,  Hidenori Saitoh

发明人： Shigenori Yanagi ,  Akira Minami ,  Masateru Sasaki ,  Shigeru Arai ,  Toshitaka Iwamoto ,  Hidenori Saitoh

IPC分类号： G02B7/28 ,  G11B7/09

CPC分类号： G11B7/094 ,  G11B7/0945 ,  G11B7/0908

摘要： A system for obtaining an optimum focusing position in an optical disc system. An optical beam is impinged onto a track of an optical disc, and a reflection signal having information regarding an intensity of an optical beam reflected by an optical disc is obtained. A predetermined frequency component, the frequency component being generated by a modulation caused by an existence of a pit on a track of the optical disc in a reflecting signal, is extracted from the reflection signal. Then a focus position in which a maximum intensity of the extracted frequency component is obtained is searched by changing the focus position of the optical beam. Further, the above system is incorporated in a focus servo control system for maintaining an optimum focusing position in an optical disc system during reading and writing operations, to determine an optimum offset value which is to be adjusted to compensate an error arisen from a construction of the focus servo control system, during an offset adjusting operation.

公开(公告)号：US5197059A

公开(公告)日：1993-03-23

申请号：US739504

申请日：1991-08-02

申请人： Akira Minami ,  Masateru Sasaki

发明人： Akira Minami ,  Masateru Sasaki

IPC分类号： G06K1/12 ,  G11B7/125 ,  H01S5/062 ,  H01S5/068 ,  H01S5/0683

CPC分类号： G11B7/126 ,  G06K1/126 ,  H01S5/06832 ,  H01S5/06209 ,  H01S5/06213 ,  H01S5/06216 ,  H01S5/06825 ,  H01S5/06835

摘要： In an apparatus for supplying a current for driving a laser diode, an amount of current is supplied to the laser diode. During a read mode, a read peak current modified by a high frequency signal in addition to the amount of current is supplied to the laser diode, and during a write mode, a base read current in addition to the amount of current is supplied to the laser diode so that a light output of the laser diode is equal to a base read output. The read peak current is adjusted so that a mean value of the light output of the laser diode is equal to the base read output. An automatic control is performed upon the amount of current so that the light output of the laser diode is close to or approaches the base read output.

公开(公告)号：US5077719A

公开(公告)日：1991-12-31

申请号：US235496

申请日：1988-08-24

申请人： Shigenori Yanagi ,  Masateru Sasaki ,  Akira Minami ,  Toshitaka Iwamoto ,  Shigeyoshi Tanaka

发明人： Shigenori Yanagi ,  Masateru Sasaki ,  Akira Minami ,  Toshitaka Iwamoto ,  Shigeyoshi Tanaka

IPC分类号： G11B7/085 ,  G11B7/09

CPC分类号： G11B7/0945 ,  G11B7/08511 ,  G11B7/0908 ,  G11B7/094

摘要： An optical disk access system capable of varying the focus position of a beam spot illuminating the optical disk. The focus position of the beam spot is varied in accordance with a mode of operation of the optical disk system. The various focus positions are automatically selected by the optical disk access system by intentionally vibrating the beam spot in a radial direction of the optical disk and detecting the amount of light reflected from the optical disk while varying a signal that changes the focus position of the beam spot. The optical disk system automatically selects a value of the signal determining the focus position of the beam spot that corresponds to maximum values derived from the light reflected from the optical disk.

公开(公告)号：US06388972B1

公开(公告)日：2002-05-14

申请号：US08938712

申请日：1997-09-26

申请人： Hidenori Saitou ,  Toshitaka Iwamoto ,  Hirataka Ukai ,  Yasukiyo Kunimatsu ,  Shigeru Juman ,  Tomoo Sukagawa ,  Masateru Sasaki ,  Tatsutoshi Nagasaki ,  Masao Uchiyama

发明人： Hidenori Saitou ,  Toshitaka Iwamoto ,  Hirataka Ukai ,  Yasukiyo Kunimatsu ,  Shigeru Juman ,  Tomoo Sukagawa ,  Masateru Sasaki ,  Tatsutoshi Nagasaki ,  Masao Uchiyama

IPC分类号： G11B3302

CPC分类号： G11B17/0434 ,  G11B7/0037 ,  G11B7/08 ,  G11B7/12 ,  G11B7/1356 ,  G11B7/1381 ,  G11B7/22 ,  G11B11/10543 ,  G11B11/1055 ,  G11B33/08 ,  G11B33/121

摘要： A miniaturized optical disc memory is receivable in a slot, of about 17 mm height, normally accommodating a floppy disc drive. A base includes a base plate with integral, peripheral sidewalls and an internal lateral partition wall which define a cartridge receiving slot on the upper surface of the base plate. First and second support plates extend from the partition wall to the rear peripheral sidewall of the base and define respective, first and second upper mounting surfaces and lower first and second cavities respectively receiving an ejection motor and a fixed optical system, individual optical components being mounted and aligned on integral, precision machined blocks in the second cavity for transmitting a laser beam and receiving a reflected beam along a central, longitudinal optical axis beneath the base plate. A first base plate aperture accommodates a lens carriage driven in reciprocating motion along the axis for receiving and redirecting the laser beam vertically for scanning an optical disc and receiving a reflected beam and redirecting same to the fixed optical system. The movable optical system is locked in a rest position and is released by insertion of a cartridge to permit scanning movement thereof. A disc drive unit is mounted beneath the base plate for reciprocating vertical movement through a second aperture therein to a raised position for engaging and driving, in rotation, an optical disc of a cartridge inserted into the apparatus and to a lowered position for releasing the cartridge and permitting ejection thereof.

摘要翻译： 小型化光盘存储器可接收在高度约17mm的槽中，通常容纳软盘驱动器。 基座包括具有整体的周边侧壁的基板和在基板的上表面上限定一个盒接收槽的内侧横隔壁。 第一和第二支撑板从分隔壁延伸到基部的后周边侧壁并且限定相应的第一和第二上安装表面，并且下部第一和第二空腔分别接收喷射马达和固定光学系统，各个光学部件被安装 并且对准在第二腔中的一体精密加工块上，用于透射激光束并沿着底板下方的中心纵向光轴接收反射光束。 第一基板孔容纳沿着轴线往复运动地驱动的透镜托架，用于垂直地接收和重定向激光束以扫描光盘并接收反射光束并将其重定向到固定光学系统。 可移动光学系统被锁定在静止位置，并且通过插入盒来释放以允许其扫描运动。 盘驱动单元安装在底板下面，用于通过其中的第二孔往复运动的垂直运动到用于接合和驱动插入到设备中的盒的光盘的转动的升高位置和用于释放盒的降低位置 并允许其喷射。

公开(公告)号：US06738334B1

公开(公告)日：2004-05-18

申请号：US09708444

申请日：2000-11-09

申请人： Hidenori Saitou ,  Toshitaka Iwamoto ,  Hirataka Ukai ,  Yasukiyo Kunimatsu ,  Shigeru Juman ,  Tomoo Sukagawa ,  Masateru Sasaki ,  Tatsutoshi Nagasaki ,  Masao Uchiyama

发明人： Hidenori Saitou ,  Toshitaka Iwamoto ,  Hirataka Ukai ,  Yasukiyo Kunimatsu ,  Shigeru Juman ,  Tomoo Sukagawa ,  Masateru Sasaki ,  Tatsutoshi Nagasaki ,  Masao Uchiyama

IPC分类号： G11B3312

CPC分类号： G11B17/0434 ,  G11B7/0037 ,  G11B7/08 ,  G11B7/12 ,  G11B7/1356 ,  G11B7/1381 ,  G11B7/22 ,  G11B11/10543 ,  G11B11/1055 ,  G11B33/08 ,  G11B33/121

摘要： A miniaturized optical disc memory is receivable in a slot, of about 17 mm height, normally accommodating a floppy disc drive. A base includes a base plate with integral, peripheral sidewalls and an internal lateral partition wall which define a cartridge receiving slot on the upper surface of the base plate. First and second support plates extend from the partition wall to the rear peripheral sidewall of the base and define respective, first and second upper mounting surfaces and lower first and second cavities respectively receiving an ejection motor and a fixed optical system, individual optical components being mounted and aligned on integral, precision machined blocks in the second cavity for transmitting a laser beam and receiving a reflected beam along a central, longitudinal optical axis beneath the base plate. A first base plate aperture accommodates a lens carriage driven in reciprocating motion along the axis for receiving and redirecting the laser beam vertically for scanning an optical disc and receiving a reflected beam and redirecting same to the fixed optical system. The movable optical system is locked in a rest position and is released by insertion of a cartridge to permit scanning movement thereof. A disc drive unit is mounted beneath the base plate for reciprocating vertical movement through a second aperture therein to a raised position for engaging and driving, in rotation, an optical disc of a cartridge inserted into the apparatus and to a lowered position for releasing the cartridge and permitting ejection thereof.

摘要翻译： 小型化光盘存储器可接收在高度约17mm的槽中，通常容纳软盘驱动器。 基座包括具有整体的周边侧壁的基板和在基板的上表面上限定一个盒接收槽的内侧横隔壁。 第一和第二支撑板从分隔壁延伸到基部的后周边侧壁并且限定相应的第一和第二上安装表面，并且下部第一和第二空腔分别接收喷射马达和固定光学系统，各个光学部件被安装 并且对准在第二腔中的一体精密加工块上，用于透射激光束并沿着底板下方的中心纵向光轴接收反射光束。 第一基板孔容纳沿着轴线往复运动地驱动的透镜托架，用于垂直地接收和重定向激光束以扫描光盘并接收反射光束并将其重定向到固定光学系统。 可移动光学系统被锁定在静止位置，并且通过插入盒来释放以允许其扫描运动。 盘驱动单元安装在底板下面，用于通过其中的第二孔往复运动的垂直运动到用于接合和驱动插入到设备中的盒的光盘的转动的升高位置和用于释放盒的降低位置 并允许其喷射。

公开(公告)号：US06411581B1

公开(公告)日：2002-06-25

申请号：US08939116

申请日：1997-09-26

申请人： Hidenori Saitou ,  Toshitaka Iwamoto ,  Hirataka Ukai ,  Yasukiyo Kunimatsu ,  Shigeru Juman ,  Tomoo Sukagawa ,  Masateru Sasaki ,  Tatsutoshi Nagasaki ,  Masao Uchiyama

发明人： Hidenori Saitou ,  Toshitaka Iwamoto ,  Hirataka Ukai ,  Yasukiyo Kunimatsu ,  Shigeru Juman ,  Tomoo Sukagawa ,  Masateru Sasaki ,  Tatsutoshi Nagasaki ,  Masao Uchiyama

IPC分类号： G11B3302

CPC分类号： G11B17/0434 ,  G11B7/0037 ,  G11B7/08 ,  G11B7/12 ,  G11B7/1356 ,  G11B7/1381 ,  G11B7/22 ,  G11B11/10543 ,  G11B11/1055 ,  G11B33/08 ,  G11B33/121

摘要： A miniaturized optical disc memory is receivable in a slot, of about 17 mm height, normally accommodating a floppy disc drive. A base includes a base plate with integral, peripheral sidewalls and an internal lateral partition wall which define a cartridge receiving slot on the upper surface of the base plate. First and second support plates extend from the partition wall to the rear peripheral sidewall of the base and define respective, first and second upper mounting surfaces and lower first and second cavities respectively receiving an ejection motor and a fixed optical system, individual optical components being mounted and aligned on integral, precision machined blocks in the second cavity for transmitting a laser beam and receiving a reflected beam along a central, longitudinal optical axis beneath the bass plate. A first base plate aperture accommodates a lens carriage driven in reciprocating motion along the axis for receiving and redirecting the laser beam vertically for scanning an optical disc and receiving a reflected beam and redirecting same to the fixed optical system. The movable optical system is locked in a rest position and is released by insertion of a cartridge to permit scanning movement thereof. A disc drive unit is mounted beneath the base plate for reciprocating vertical movement through a second aperture therein to a raised position for engaging and driving, in rotation, an optical disc of a cartridge inserted into the apparatus and to a lowered position for releasing the cartridge and permitting ejection thereof.

摘要翻译： 小型化光盘存储器可接收在高度约17mm的槽中，通常容纳软盘驱动器。 基座包括具有整体的周边侧壁的基板和在基板的上表面上限定一个盒接收槽的内侧横隔壁。 第一和第二支撑板从分隔壁延伸到基部的后周边侧壁并且限定相应的第一和第二上安装表面，并且下部第一和第二空腔分别接收喷射马达和固定光学系统，各个光学部件被安装 并且对准在第二腔中的一体精密加工块上，用于传输激光束并沿着低音板下方的中心纵向光轴接收反射光束。 第一基板孔容纳沿着轴线往复运动地驱动的透镜托架，用于垂直地接收和重定向激光束以扫描光盘并接收反射光束并将其重定向到固定光学系统。 可移动光学系统被锁定在静止位置，并且通过插入盒来释放以允许其扫描移动。 盘驱动单元安装在底板下面，用于通过其中的第二孔往复运动的垂直运动到用于接合和驱动插入到设备中的盒的光盘的转动的升高位置和用于释放盒的降低位置 并允许其喷射。

公开(公告)号：US4831611A

公开(公告)日：1989-05-16

申请号：US909334

申请日：1986-09-19

申请人： Masateru Sasaki ,  Yuji Inouye

发明人： Masateru Sasaki ,  Yuji Inouye

IPC分类号： G11B20/10 ,  G11B7/00 ,  G11B7/0045 ,  G11B7/013 ,  G11B7/12 ,  G11B19/04 ,  G11B20/12 ,  G11B27/30 ,  G11B27/36

CPC分类号： G11B7/24085 ,  G11B19/04 ,  G11B20/1217 ,  G11B27/30 ,  G11B27/36 ,  G11B7/0045 ,  G11B7/12

摘要： An optical writing and reading method and apparatus for writing data on a recording medium. To prevent an over-writing of data, a mark is written to indicate that data is already written. Before writing data, a mark is written on a mark recording region. Simultaneously with the writing of the mark, the light quantity reflected from the mark recording region is detected. When the reflected light quantity indicates that data is already written, subsequent data writing is inhibited.

摘要翻译： 一种用于在记录介质上写入数据的光学写入和读取方法和装置。 为了防止数据的重写，写入一个标记以指示数据已被写入。 在写入数据之前，将标记写在标记记录区域上。 与标记的写入同时，检测从标记记录区域反射的光量。 当反射光量指示数据已被写入时，后续数据写入被禁止。