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21. 发明授权

US08625399B2 Optical disk apparatus and its reproducing method 失效
标题翻译：光盘装置及其再现方法
公开(公告)号：US08625399B2
公开(公告)日：2014-01-07
申请号：US13652258
申请日：2012-10-15
申请人： Hitachi Ltd.
发明人： Koichiro Nishimura , Masayuki Inoue
IPC分类号： G11B5/58 , G11B15/04 , G11B19/04 , G11B7/00
CPC分类号： G11B7/005 , G11B7/1263 , G11B2007/0006
摘要： Amplitude and frequency of a high-frequency signal superposed on a reproduction laser beam are changed in accordance with a reproduction spot diameter on the surface of the recording layer upon discrimination of an optical disk in initial adjustment after insertion of the optical disk and change of a layer of a multi-layer optical disk. Further, the high-frequency signal is not superposed on the reproduction laser beam until end of the discrimination and change to a target layer upon discrimination of the optical disk and change of a layer of a multi-layer optical disk.
摘要翻译：叠加在再现激光束上的高频信号的幅度和频率根据在插入光盘之后的初步调整中的光盘鉴别时在记录层表面上的再现点直径而改变层的多层光盘。此外，高分辨率信号不再叠加在再现激光束上，直到判断结束，并且在辨别光盘时改变为目标层，并且改变多层光盘的层。

22. 发明申请

US20140003222A1 OPTICAL INFORMATION APPARATUS AND GAP CONTROL METHOD THEREOF 有权
标题翻译：光信息设备及其控制方法
公开(公告)号：US20140003222A1
公开(公告)日：2014-01-02
申请号：US14005386
申请日：2012-03-16
申请人： Ryutaro Futakuchi , Shigeru Furumiya
发明人： Ryutaro Futakuchi , Shigeru Furumiya
IPC分类号： G11B7/1263
CPC分类号： G11B7/1263 , G11B7/0908 , G11B7/1374 , G11B7/1387 , G11B7/139 , G11B2007/13727
摘要： An optical disk apparatus has: a laser (14) that outputs light; an optical system that includes an SIL (2) for forming a predetermined sized beam spot on an optical disk (1) using the light from the laser; a detector (26) that detects output power of the laser and generates a laser power detection signal; a laser power control circuit (27) that controls the output power of the laser using the laser power detection signal; a detector (10) that detects a gap length between the optical disk and the SIL and generates a gap detection signal; and a gap control circuit (15) that controls the gap length between the optical disk and the SIL using the gap detection signal. The power control circuit has a gain crossover frequency greater than a gain crossover frequency of the gap control circuit.
摘要翻译：光盘装置具有：输出光的激光器（14）; 光学系统，其包括用于使用来自激光器的光在光盘（1）上形成预定尺寸的光束点的SIL（2）检测器（26），其检测激光器的输出功率并产生激光功率检测信号; 激光功率控制电路（27），其使用所述激光功率检测信号来控制所述激光器的输出功率; 检测器（10），其检测光盘和SIL之间的间隙长度，并产生间隙检测信号; 以及间隙控制电路（15），其使用间隙检测信号来控制光盘和SIL之间的间隙长度。功率控制电路具有大于间隙控制电路的增益交叉频率的增益交叉频率。

23. 发明授权

US08611200B2 Photo detecting element, and optical pick-up device and optical disc drive including the photo detecting element 失效
标题翻译：光检测元件，以及包括光检测元件的光学拾取器件和光盘驱动器
公开(公告)号：US08611200B2
公开(公告)日：2013-12-17
申请号：US13569777
申请日：2012-08-08
申请人： Jung-bae Oh , Jin-ho Jung , Jong-hwa Yu
发明人： Jung-bae Oh , Jin-ho Jung , Jong-hwa Yu
IPC分类号： G11B7/13
CPC分类号： G01J1/44 , G11B7/1263 , G11B7/1275 , G11B7/13 , G11B2007/0006
摘要： Provided is a photo detecting element that has a simplified structure and that is easily manufactured and assembled, and an optical pick-up device including the photo detecting element. The photo detecting element includes an optical sensor, an amplifier for amplifying a signal from the optical sensor, and a non-linear multi-step variable resistor to adjust a gain of the amplifier.
摘要翻译：提供一种具有简化的结构并且易于制造和组装的光检测元件，以及包括该光检测元件的光学拾取装置。光检测元件包括光学传感器，用于放大来自光学传感器的信号的放大器和用于调节放大器增益的非线性多级可变电阻器。

24. 发明授权

US08477576B2 Optical disc apparatus 失效
标题翻译：光盘装置
公开(公告)号：US08477576B2
公开(公告)日：2013-07-02
申请号：US13430328
申请日：2012-03-26
申请人： Shinsuke Onoe
发明人： Shinsuke Onoe
IPC分类号： G11B7/00
CPC分类号： G11B7/005 , G11B7/094 , G11B7/0946 , G11B7/1263
摘要： An optical disc apparatus, for recording or reproducing information by irradiating a laser beam on an optical disc. More particularly, the present application relates to an optical pickup of the optical disc apparatus that produces a tracking error signal, in general, and the optical disc apparatus executes a tracking servo with using the tracking error signal.
摘要翻译：一种用于通过在光盘上照射激光束来记录或再现信息的光盘装置。更具体地，本申请涉及通常产生跟踪误差信号的光盘装置的光学拾取器，并且光盘装置使用跟踪误差信号来执行跟踪伺服。

25. 发明申请

US20130163396A1 DEVICE AND METHOD FOR WRITING DATA TO AN OPTICAL DISC 失效
标题翻译：将数据写入光盘的设备和方法
公开(公告)号：US20130163396A1
公开(公告)日：2013-06-27
申请号：US13723481
申请日：2012-12-21
申请人： Sang-jun Park
发明人： Sang-jun Park
IPC分类号： G11B7/1263
CPC分类号： G11B7/1263 , G11B7/1267
摘要： Provided are a method of optical writing on a disc and a device adopting the method. The method of optical writing includes initially driving a laser diode (LD) at a preset reference value corresponding to a target output, detecting an actual output power by monitoring light output by the LD, and comparing the actual output power to the target output power. The method further includes compensating the reference value and writing data to the optical disc using the compensated reference value.
摘要翻译：提供了一种在光盘上写入光盘的方法和采用该方法的设备。光学写入的方法包括：初始地以对应于目标输出的预设参考值驱动激光二极管（LD），通过监视LD输出的光输出来检测实际输出功率，并将实际输出功率与目标输出功率进行比较。该方法还包括使用补偿的参考值补偿参考值并将数据写入光盘。

26. 发明授权

US08427917B2 Optical pickup apparatus, integrated circuit, and method for controlling laser output of optical pickup apparatus 有权
标题翻译：光拾取装置，集成电路和控制光拾取装置的激光输出的方法
公开(公告)号：US08427917B2
公开(公告)日：2013-04-23
申请号：US13422242
申请日：2012-03-16
申请人： Hisayoshi Uchiyama , Masashi Arai , Hiroshi Kojima , Rui Kurihara
发明人： Hisayoshi Uchiyama , Masashi Arai , Hiroshi Kojima , Rui Kurihara
IPC分类号： G11B27/36 , G11B7/00 , H01S3/00
CPC分类号： G11B7/1263 , G11B2007/0006 , G11B2007/0013 , H01S5/042 , H01S5/0683
摘要： An optical-pickup apparatus includes: a first laser light source including a first laser diode to emit a laser beam having a first wavelength, and a back-monitor photodetector to receive the laser beam emitted in a backward direction, not being an optical-disc direction, and output a first monitor signal; a second laser-light source including a second laser diode to emit a laser beam having a second wavelength; a light-receiving circuit including a front-monitor photodetector to receive the laser beam emitted in a forward direction, being the optical-disc direction, and output a second monitor signal, and a switch circuit to be inputted with the first and second monitor signals, and output the first or second monitor signal according to a switch signal; and first and second drive circuits to drive the first and second laser diodes according to the first and second monitor signals outputted from the light-receiving circuit, respectively.
摘要翻译：一种光拾取装置，包括：第一激光源，包括发射具有第一波长的激光束的第一激光二极管和用于接收沿反向发射的激光束的后监视器光检测器，不是光盘方向，并输出第一监视信号; 包括第二激光二极管以发射具有第二波长的激光束的第二激光光源; 光接收电路，包括用于接收沿正向发射的激光束的前监视器光电检测器，作为光盘方向，并输出第二监视信号;以及开关电路，输入第一和第二监视信号并根据开关信号输出第一或第二监视信号; 以及分别根据从光接收电路输出的第一和第二监视信号来驱动第一和第二激光二极管的第一和第二驱动电路。

27. 发明申请

US20130083640A1 OPTICAL READ/WRITE APPARATUS 有权
标题翻译：光读/写设备
公开(公告)号：US20130083640A1
公开(公告)日：2013-04-04
申请号：US13534344
申请日：2012-06-27
申请人： Yuichi TAKAHASHI , Kazuo MOMOO
发明人： Yuichi TAKAHASHI , Kazuo MOMOO
IPC分类号： G11B27/36
CPC分类号： G11B7/00458 , G11B7/003 , G11B7/1263
摘要： Disclosed is an improved DRAW technique for writing data on an optical storage medium and reading the data in parallel. In obtaining the optical power of a first light source 1, writing user data is temporarily suspended to write non-user data with a second light source 2 turned OFF.
摘要翻译：公开了一种用于在光存储介质上写入数据并且并行读取数据的改进的DRAW技术。在获得第一光源1的光功率时，暂时停止写入用户数据，以使第二光源2关闭来写入非用户数据。

28. 发明申请

US20130021887A1 OPTICAL OSCILLATION DEVICE AND RECORDING APPARATUS 失效
公开(公告)号：US20130021887A1
公开(公告)日：2013-01-24
申请号：US13540858
申请日：2012-07-03
申请人： Goro Fujita , Tsutomu Maruyama
发明人： Goro Fujita , Tsutomu Maruyama
IPC分类号： G11B7/126 , H01S3/13
CPC分类号： G11B7/1263 , B82Y20/00 , G11B7/127 , H01S5/06253 , H01S5/0658 , H01S5/34333
摘要： Provided is a recording apparatus including a self-excited oscillation semiconductor laser that has a double quantum well separate confinement heterostructure and includes a saturable absorber section to which a negative bias voltage is applied and a gain section into which a gain current is injected, an optical separation unit, an objective lens, a light reception element, a pulse detection unit, a reference signal generation unit, a phase comparison unit, a recording signal generation unit, and a control unit.

29. 发明授权

US08339911B2 Method and device for retrieving information from an optical record carrier at various reading speeds 有权
标题翻译：用于以各种读取速度从光学记录载体检索信息的方法和装置
公开(公告)号：US08339911B2
公开(公告)日：2012-12-25
申请号：US13410409
申请日：2012-03-02
申请人： Johannes Hendrikus Maria Spruit , Bas Feddes , Jakob Gerrit Nijboer , Paul Weijenbergh
发明人： Johannes Hendrikus Maria Spruit , Bas Feddes , Jakob Gerrit Nijboer , Paul Weijenbergh
IPC分类号： G11B7/00
CPC分类号： G11B7/1263
摘要： The present invention is related to a method and a reading device (1) for retrieving information from an optical record carrier (10) in which the read power level of a radiation beam (3) for scanning the optical record carrier is set in dependence on the read-out speed. The invention is also related to a record carrier for use with such a method and a reading device.
摘要翻译：本发明涉及一种用于从光学记录载体（10）检索信息的方法和读取装置（1），其中用于扫描光学记录载体的辐射束（3）的读取功率电平依赖于读出速度。本发明还涉及与这种方法和读取装置一起使用的记录载体。

30. 发明申请

US20120250478A1 OPTICAL DISC APPARATUS 失效
标题翻译：光盘设备
公开(公告)号：US20120250478A1
公开(公告)日：2012-10-04
申请号：US13430328
申请日：2012-03-26
申请人： Shinsuke ONOE
发明人： Shinsuke ONOE
IPC分类号： G11B20/10
CPC分类号： G11B7/005 , G11B7/094 , G11B7/0946 , G11B7/1263
摘要： An optical disc apparatus, for recording or reproducing information by irradiating a laser beam on an optical disc. More particularly, the present application relates to an optical pickup of the optical disc apparatus that produces a tracking error signal, in general, and the optical disc apparatus executes a tracking servo with using the tracking error signal.
摘要翻译：一种用于通过在光盘上照射激光束来记录或再现信息的光盘装置。更具体地，本申请涉及通常产生跟踪误差信号的光盘装置的光学拾取器，并且光盘装置使用跟踪误差信号来执行跟踪伺服。

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