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11. 发明授权

US5306903A Objective lens position detecting system capable of adjusting amounts of radiation 失效
标题翻译：能够调节辐射量的物镜位置检测系统
公开(公告)号：US5306903A
公开(公告)日：1994-04-26
申请号：US909692
申请日：1992-07-07
申请人： Mikio Yamamuro , Akihiko Doi
发明人： Mikio Yamamuro , Akihiko Doi
IPC分类号： G11B7/085 , G02B7/02 , G11B7/09
CPC分类号： G11B7/0901 , G02B7/02
摘要： Disclosed is an objective lens position detecting system which comprises an optical head for holding an objective lens for focusing a light beam on a storage disk having tracks formed thereon, a first detector having a first light-emitting element and a first light-receiving element and provided in a vicinity of the objective lens, unconnected thereto, for detecting the position of the objective lens, a second detector having a second light-emitting element and a second light-receiving element and provided in a vicinity of the objective lens, unconnected thereto, and apart by a predetermined distance from the first detector, for detecting the position of the objective lens, a plate, connected to the objective lens, for reflecting light from the first light-emitting element to the first light-receiving element and reflecting light from the second light-emitting element to the second light-receiving element, whereby the first detector and the second detector detect the position of the objective lens from values of the reflected light, a circuit for outputting a difference between detection signals received from the first detector and the second detector, and a circuit for receiving the detection signals from the first and second detectors and adjusting the amounts of radiation from the first light-emitting element and the second light-emitting element so as to cause the sum of the detection signals to approach a predetermined target value.
摘要翻译：公开了一种物镜位置检测系统，其包括用于保持用于将光束聚焦在其上形成有轨道的存储盘上的物镜的光学头，具有第一发光元件和第一光接收元件的第一检测器，设置在物镜附近，用于检测物镜的位置，具有第二发光元件和第二光接收元件的第二检测器，并且设置在物镜附近，未连接物镜并且与第一检测器隔开预定距离，为了检测物镜的位置，连接到物镜的用于将来自第一发光元件的光反射到第一光接收元件的反射光从第二发光元件到第二光接收元件，由此第一检测器和第二检测器检测ob的位置反射光值的反射镜，用于输出从第一检测器和第二检测器接收的检测信号之间的差的电路，以及用于接收来自第一和第二检测器的检测信号的电路，以及调整来自第一检测器的辐射量第一发光元件和第二发光元件，使得检测信号的和接近预定的目标值。

12. 发明授权

US4900910A System for detecting the position of an objective lens 失效
标题翻译：系统，用于检测物镜的位
公开(公告)号：US4900910A
公开(公告)日：1990-02-13
申请号：US259399
申请日：1988-10-18
申请人： Akihiko Doi
发明人： Akihiko Doi
IPC分类号： G01D5/30 , G11B7/085 , G11B7/09
CPC分类号： G11B7/093 , G01D5/30 , G11B7/09 , G11B7/0946 , G11B7/0948 , G11B7/08517 , G11B7/0901 , G11B7/0908
摘要： In a system for detecting the position of an objective lens which is movably suspended and can be moved along a predetermined direction, a mirror is fixed to the objective lens and is moved with the objective lens along the predetermined directions. A fixed base is so arranged to face the mirror and light emitting element and photodetectors are arranged along the predetermined direction or the fixed base. Cylindrical light shielding member is located between the photodetectors and the element and a differential amplifier is connected to the photodetectors.
摘要翻译：在用于检测可移动地悬挂并可沿着预定方向移动的物镜的位置的系统中，反射镜被固定到物镜并且沿着预定方向与物镜一起移动。固定基座被布置为面向镜子，发光元件和光电探测器沿着预定方向或固定基座布置。圆柱形遮光件位于光电检测器和元件之间，差分放大器连接到光电检测器。

13. 发明授权

US5161144A System for recording information on an optical recording medium 失效
标题翻译：记录光记录介质信息的系统
公开(公告)号：US5161144A
公开(公告)日：1992-11-03
申请号：US516968
申请日：1990-04-27
申请人： Ryoji Takeuchi , Tomohisa Yoshimaru , Akihiko Doi
发明人： Ryoji Takeuchi , Tomohisa Yoshimaru , Akihiko Doi
IPC分类号： G11B7/125
CPC分类号： G11B7/126
摘要： In an information recording system, a semiconductor laser is energized in response to a drive current which is modulated in accordance with a recording signal in a recording mode so that a modulated laser beam is generated from the semiconductor laser. The modulated laser beam is focused on an optical disk and is reflected from the optical disk and the reflected laser beam is detected by an photo-detector. A detection signal from the detector is compared with a predetermined threshold level by a binary circuit and a relationship between the recording signal and an output signal from the binary circuit is detected by a detection circuit. In a overwrite mode in which the laser beam is focused on a pit or pits on the optical disk, an overwrite detection signal is generated from the detection circuit and the overwrite detection signal is counted by a counter circuit. When the counter circuit counts a predetermined count value, the counter circuit generates a recording inhibition signal for preventing the semiconductor laser from generating the modulated laser beam.

14. 发明授权

US5101396A Information recording system capable of preventing overwriting 失效
标题翻译：信息记录系统可以防止覆盖
公开(公告)号：US5101396A
公开(公告)日：1992-03-31
申请号：US589597
申请日：1990-09-28
申请人： Ryoji Takeuchi , Akihiko Doi
发明人： Ryoji Takeuchi , Akihiko Doi
IPC分类号： G11B7/00 , G11B7/0045 , G11B20/10
CPC分类号： G11B7/0045 , G11B20/10009
摘要： In an information recording system, a semiconductor laser is energized in response to a drive current which is modulated in accordance with a recording signal in a recording mode so that a modulated laser beam is generated from the semiconductor laser. The modulated laser beam is focused on an optical disk and is reflected from the optical disk and the reflected laser beam is detected by an photo-detector. A detection signal from the detector is compared with a predetermined threshold level which is set in accordance with the peak intensity by a binary circuit and a relationship between the recording signal and an output signal from the binary circuit is detected by a detection circuit. In an overwrite mode in which the laser beam is focused on pit or pits on the optical disk, an overwrite detection signal is generated from the detection circuit and the overwrite detection signal is mounted by a counter circuit. When the counter circuit counts a predetermined count value, the counter citcuit generates a recording inhibition signal for preventing the semiconductor laser from generating the modulated laser beam.

15. 发明授权

US4684797A Optical system and method for reducing vibration of an objective lens in an optical head assembly of an optical read/write system 失效
标题翻译：用于减少光学读/写系统的光头组件中的物镜的振动的光学系统和方法
公开(公告)号：US4684797A
公开(公告)日：1987-08-04
申请号：US705306
申请日：1985-02-25
申请人： Hideo Ando , Akihiko Doi
发明人： Hideo Ando , Akihiko Doi
IPC分类号： G11B7/085 , G11B7/09 , G01J1/20
CPC分类号： G11B7/0946 , G11B7/08505
摘要： In an optical system, a laser beam emitted from a laser unit is converted by a collimator lens into a parallel light beam, and converged by an objective lens to a light reflecting surface of an optical disk having a tracking guide. The objective lens is suspended in a lens barrel assembly by a spring member so as to be moved by a voice coil along the optical axis of the objective lens for focus and by a linear motor in a direction perpendicular to the optical axis for tracking control. As a result, as the lens barrel assembly is moved along the optical disk, the objective lens is moved in a direction perpendicular to the optical axis of the system. Then, part of the light beam transferred from the objective lens is directed to any one of the first and second photosensitive sections of the photodetector. As a result, as the linear motor is driven in response to the difference of the signals from the first and second photosensitive sections, the vibration of the objective lens can be stopped.
摘要翻译：在光学系统中，从激光单元发射的激光束被准直透镜转换为平行光束，并且被物镜会聚到具有跟踪引导件的光盘的光反射表面。物镜通过弹簧构件悬挂在镜筒组件中，以沿着用于聚焦的物镜的光轴被音圈移动，并且通过直线电机沿与光轴垂直的方向进行跟踪控制。结果，随着镜筒组件沿着光盘移动，物镜在垂直于系统的光轴的方向上移动。然后，从物镜传送的光束的一部分被引导到光电检测器的第一和第二光敏部分中的任何一个。结果，由于响应于来自第一和第二感光部分的信号的差异驱动线性电动机，所以可以停止物镜的振动。

16. 发明申请

US20090003152A1 OPTICAL DISC APPARATUS, CONTROLLER OF OPTICAL DISC APPARATUS, AND CONTROL METHOD OF OPTICAL DISC APPARATUS 审中-公开
标题翻译：光盘装置，光盘装置的控制器和光盘装置的控制方法
公开(公告)号：US20090003152A1
公开(公告)日：2009-01-01
申请号：US12146220
申请日：2008-06-25
申请人： Akihiko Doi
发明人： Akihiko Doi
IPC分类号： G11B7/00
CPC分类号： G11B7/094 , G11B7/0941 , G11B2007/0006
摘要： According to one embodiment, an optical disc apparatus, includes an offset addition section configured to add an offset amount to the electric signal output from each of a photo receiving elements in accordance with a first signal, a gain variable section configured to adjust a gain amount of each offset added electric signal obtained by adding an offset in accordance with a second signal, an A/D converter configured to convert each of the offset added electric signals to a digital signal from an analog signal, a servo signal arithmetic section configured to generate an error signal used for focus and tracking servo control from the digital signal, a reference signal generation section configured to generate the first signal and the second signal from the digital signal, and a gain/offset correction section configured to correct the error signal in accordance with the first signal and the second signal.
摘要翻译：根据一个实施例，一种光盘装置，包括偏移相加部分，被配置为根据第一信号向从光接收元件输出的电信号添加偏移量;增益变量部分，被配置为调整增益量通过根据第二信号添加偏移而获得的每个偏移相加电信号; A / D转换器，被配置为将来自模拟信号的每个补偿相加电信号转换为数字信号;伺服信号运算部，被配置为产生用于从数字信号进行聚焦和跟踪伺服控制的误差信号，被配置为从数字信号产生第一信号和第二信号的参考信号产生部分，以及被配置为根据数字信号校正误差信号的增益/偏移校正部分具有第一信号和第二信号。

17. 发明申请

US20070177355A1 Heat sink, electronic device, and tuner apparatus 审中-公开
标题翻译：散热器，电子设备和调谐器装置
公开(公告)号：US20070177355A1
公开(公告)日：2007-08-02
申请号：US11634227
申请日：2006-12-06
申请人： Akio Ito , Miyoshi Yamauchi , Akihiko Doi
发明人： Akio Ito , Miyoshi Yamauchi , Akihiko Doi
IPC分类号： H05K7/20 , F28F7/00
CPC分类号： H01L23/3672 , H01L2924/0002 , H01L2924/00
摘要： In one embodiment of a heat sink fitted to an electronic component, a plurality of heat dissipating members having a flat main body portion and a fin portion formed by extending the main body portion are provided, and at least one of the heat dissipating members further has an extended portion formed by extending the fin portion or the main body portion, and an engaging portion formed in a tip of the extended portion.
摘要翻译：在安装到电子部件的散热器的一个实施例中，设置有具有平坦主体部分和通过延伸主体部分形成的翅片部分的多个散热部件，并且至少一个散热部件还具有通过延长翅片部分或主体部分形成的延伸部分和形成在延伸部分的尖端中的接合部分。

18. 发明授权

US5901125A Recording and reproducing optical disk device with multi-disk type capability 失效
标题翻译：记录和再现具有多盘类型能力的光盘设备
公开(公告)号：US5901125A
公开(公告)日：1999-05-04
申请号：US796410
申请日：1997-02-06
申请人： Akihiko Doi
发明人： Akihiko Doi
IPC分类号： G11B7/00 , G11B7/0045 , G11B7/0055 , G11B7/125 , G11B19/12
CPC分类号： G11B19/12 , G11B2007/0006
摘要： In an optical disk device with various types of optical disks, the amounts of light are set for the various types of optical disks by emitting laser light from a semiconductor laser oscillator while sequentially increasing the light amount thereof for the optical disks in an order from the optical disk of the smallest set light amount. That is, first, whether or not an optical disk of CD, CD-ROM or DVD-ROM can be suitably used is determined based on the amount of reflection light from the optical disk obtained by causing the semiconductor laser oscillator to emit laser light in the smallest light amount setting state, and if it is not determined that the optical disk can be suitably used, the light amount is raised to a level higher than the lowest light amount set level by one level.
摘要翻译：在具有各种类型的光盘的光盘装置中，通过从半导体激光振荡器发射激光来为各种类型的光盘设置光量，同时依次从光盘的顺序增加光盘的光量光盘最小设定光量。也就是说，首先，可以基于通过使半导体激光振荡器发射激光而获得的来自光盘的反射光的量来确定是否可以适当地使用CD，CD-ROM或DVD-ROM的光盘最小光量设定状态，如果不能确定光盘可以适当地使用，则将光量提高到比最低光量设定水平高一级的水平。

19. 发明授权

US5063548A Information processing apparatus 失效
标题翻译：信息处理装置
公开(公告)号：US5063548A
公开(公告)日：1991-11-05
申请号：US346776
申请日：1989-05-03
申请人： Hiroshi Yamashita , Akihiko Doi
发明人： Hiroshi Yamashita , Akihiko Doi
IPC分类号： G11B7/085 , G11B7/08 , G11B21/02
CPC分类号： G11B7/08 , G11B21/02
摘要： An information processing apparatus includes a main base and a drive base on which support frames are erected to face each other. A pair of parallel guide shafts are supported on the frames and extend in the radial direction of an optical disk. An optical head is supported by the guide shafts to be movable along the shafts. Insulating tape is wound around each end of the guide shaft to electrically insulate the head from the base, thereby preventing external noise from being transmitted to the head via the base. The drive base is further insulated from the main base by insulating seals interposed between the main base and the drive base and by insulating collars through which screws attach the drive base to the main base.
摘要翻译：信息处理设备包括主基座和驱动基座，支撑框架竖立在该驱动基座上面对面。一对平行的引导轴支撑在框架上并沿着光盘的径向方向延伸。光学头由引导轴支撑，可以沿轴移动。绝缘胶带缠绕在引导轴的每一端，以使头与基座电绝缘，从而防止外部噪声通过基座传递到头部。驱动基座通过介于主基座和驱动基座之间的绝缘密封件和绝缘套环进一步与主基座绝缘，螺钉将驱动基座连接到主基座。

20. 发明授权

US5406536A Optical disc apparatus having improved read accuracy with non-linear servo signal gain during track access and focus initialization 失效
标题翻译：光盘装置在磁道访问和聚焦初始化期间具有提高的非线性伺服信号增益的读取精度
公开(公告)号：US5406536A
公开(公告)日：1995-04-11
申请号：US108519
申请日：1993-08-18
申请人： Akihiko Doi
发明人： Akihiko Doi
IPC分类号： G11B7/085 , G11B7/09
CPC分类号： G11B7/08541 , G11B7/0945
摘要： A head signal process circuit 18 generates a focus error signal representing the distance between an optical disc 11 and an objective lens 20 using a detection signal detected by an optical detector of an optical head 14. The focus error signal is sent to a non-linear amplifying circuit 21. The level of the focus error signal in the vicinity of a servo point is amplified. The level of the focus error signal apart from the servo point is suppressed. The output of the non-linear amplifying circuit 21 is sent to an A/D converter 22. Thus, a servo digital signal is generated.
摘要翻译：头信号处理电路18使用由光头14的光检测器检测的检测信号，产生表示光盘11与物镜20之间的距离的聚焦误差信号。聚焦误差信号被发送到非线性放大电路21.在伺服点附近的聚焦误差信号的电平被放大。与伺服点分离的聚焦误差信号的电平被抑制。非线性放大电路21的输出被发送到A / D转换器22.因此，产生伺服数字信号。

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