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    Focus control method
    6.
    发明专利
    Focus control method 有权
    聚焦控制方法

    公开(公告)号：JP2010160896A

    公开(公告)日：2010-07-22

    申请号：JP2010030750

    申请日：2010-02-15

    Applicant: Sony Corp ,  ソニー株式会社

    Inventor： MIYAMOTO HIROTAKA ,  SAITO KIMIHIRO ,  HORIGOME TOSHIHIRO ,  HAYASHI KUNIHIKO

    IPC: G11B7/09 ,  G11B7/004 ,  G11B7/0065 ,  G11B7/135

    Abstract: PROBLEM TO BE SOLVED: To increase reproduction accuracy from an optical disk. SOLUTION: Firstly, an optical disk device performs a focus control based on a servo detection signal acquired by receiving a servo reflection light beam, which is a reference light beam LS having been reflected by a reference layer 102. After an amplitude value of a tracking error signal becomes below a prescribed threshold, an information light beam LM is switched to subject to a focus control based on an information detection signal acquired by receiving the information light beam, which is the information light beam having been reflected by a target mark layer YG. Accordingly, a focus control based on the information detection signal can reliably be performed without largely deviating the focus FM of the information light beam LM from the target mark layer YG. The information light beam LM can accurately be focused on the target mark layer YG. COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题：提高光盘的再现精度。 解决方案：首先，光盘装置基于通过接收已被参考层102反射的参考光束LS的伺服反射光束而获得的伺服检测信号进行聚焦控制。在振幅值 跟踪误差信号变得低于规定的阈值时，信息光束LM被切换为根据通过接收信息光获取的信息检测信号进行聚焦控制，信息光束是已被目标反射的信息光束 标记层YG。 因此，可以可靠地执行基于信息检测信号的聚焦控制，而不会使信息光束LM的聚焦FM从目标标记层YG偏离很大。 信息光束LM可以精确地聚焦在目标标记层YG上。 版权所有（C）2010，JPO＆INPIT

    Phase detection device, phase detection method, reproduction device, and reproduction method
    7.
    发明专利
    Phase detection device, phase detection method, reproduction device, and reproduction method 审中-公开
    相位检测装置，相位检测方法，再现装置和再现方法

    公开(公告)号：JP2010009637A

    公开(公告)日：2010-01-14

    申请号：JP2008164494

    申请日：2008-06-24

    Applicant: Sony Corp ,  ソニー株式会社

    Inventor： HORIGOME TOSHIHIRO ,  YUAN JINGCHENG ,  KOBAYASHI SEIJI

    IPC: G11B20/14 ,  G11B7/005 ,  H03K5/26 ,  H03L7/08 ,  H03L7/085

    Abstract: PROBLEM TO BE SOLVED: To provide a phase detection device and a phase detection method capable of precisely detecting a phase difference between a reproduced signal reproduced from a recording medium and a clock signal, and to provide a reproduction device and reproduction method including the phase detection device. SOLUTION: A phase synchronization circuit 39 includes a limit phase detector 41. Consequently, for example, when timing (C) of zero crossing shown in the fig.4 is detected (YES at ST605), a counted value by a clock counter 47 is compared with a predetermined value (ST606), thereby a phase counter 51 can be in a non-enabled state in a period from C to the leading edge of the next clock, when the count value is smaller than the predetermined value (NO at ST606). That is, an output from (the phase counter 51 of) the limit phase detector 41 can be invalidated. As the result, it is possible to prevent a phase error signal from being obtained on the basis of an RF signal (input signal) of a pulse width smaller than a predetermined count value, which is easily affected by noise, etc. COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种能够精确地检测从记录介质再现的再现信号与时钟信号之间的相位差的相位检测装置和相位检测方法，并提供一种再现装置和再现方法，包括 相位检测装置。 相位同步电路39包括极限相位检测器41.因此，例如，当检测到图4所示的零交叉的定时（C）（ST605为“是”）时，通过时钟计数值 计数器47与预定值进行比较（ST606），从而当计数值小于预定值时，相位计数器51可以在从下一个时钟的C到上升沿的周期内处于非使能状态 NO在ST606）。 也就是说，极限相位检测器41的（相位计数器51）的输出可以无效。 结果，可以基于小于容易受噪声影响的预定计数值的脉冲宽度的RF信号（输入信号）来防止获得相位误差信号。 版权所有（C）2010，JPO＆INPIT

    Optical recording/reproducing method, optical pickup device, optical recording/reproducing device, method for manufacturing optical recording medium, and semiconductor laser device
    8.
    发明专利
    Optical recording/reproducing method, optical pickup device, optical recording/reproducing device, method for manufacturing optical recording medium, and semiconductor laser device 审中-公开
    光学记录/再现方法，光学拾取装置，光学记录/再现装置，用于制造光学记录介质的方法和半导体激光器件

    公开(公告)号：JP2006012301A

    公开(公告)日：2006-01-12

    申请号：JP2004188283

    申请日：2004-06-25

    Applicant: Sony Corp ,  ソニー株式会社

    Inventor： SHINODA MASATAKA ,  SAITO KIMIHIRO ,  HORIGOME TOSHIHIRO ,  FURUKI MOTOHIRO

    IPC: G11B7/14 ,  G11B7/004 ,  G11B7/09 ,  G11B7/125 ,  G11B7/24 ,  G11B7/26 ,  H01S5/026 ,  H01S5/40

    CPC classification number: G11B7/1387

    Abstract: PROBLEM TO BE SOLVED: To provide an optical recording/reproducing method suitably applied to a near-field optical recording/reproducing system and capable of achieving a high speed for a transfer rate, an optical pickup device, and an optical recording/reproducing device. SOLUTION: In the optical recording/reproducing method for applying a near-field light to an optical recording medium to perform recording and/or reproducing, two or more recording/reproducing beam spots 32 are arranged in a recording/reproducing area 30 held between the guide tracks 31 of the optical recording medium to perform recording and/or reproducing. COPYRIGHT: (C)2006,JPO&NCIPI

    Abstract translation: 要解决的问题：为了提供适用于近场光记录/再现系统并能够实现传输速率的高速的光学记录/再现方法，光学拾取装置和光学记录/再现方法， 再现装置。 解决方案：在用于将近场光施加到光学记录介质以进行记录和/或再现的光学记录/再现方法中，在记录/再现区域30中布置两个或更多个记录/再现光束点32 保持在光学记录介质的引导轨道31之间以执行记录和/或再现。 版权所有（C）2006，JPO＆NCIPI

    INFORMATION RECORDER, INFORMATION RECORDING MEDIUM AND INFORMATION-REPRODUCING DEVICE
    10.
    发明专利
    INFORMATION RECORDER, INFORMATION RECORDING MEDIUM AND INFORMATION-REPRODUCING DEVICE 失效

    公开(公告)号：JP2001256647A

    公开(公告)日：2001-09-21

    申请号：JP2000077752

    申请日：2000-03-15

    Applicant: SONY CORP

    Inventor： HORIGOME TOSHIHIRO

    IPC: G11B20/14 ,  G11B7/004 ,  G11B7/007

    Abstract: PROBLEM TO BE SOLVED: To attain sure supplementary synchronization by preventing decrease of the recording capacity using a simple constitution for an information recorder, information recording medium and information reproducing device, e.g. in the manner of applying to an optical disk device and optical disk. SOLUTION: For these devices, modulation signals M1-M4 of plural systems are produced by using, e.g. carrier signals SC1-SC4 of orthogonal plural systems, and when desired data DD0-DD3 are recorded by changing a groove, etc., in accordance with a recording signal RS added with the modulation signals M1-M4 of these plural systems, the recording is performed by adding a synchronizing signal SYNC of reproduction reference of a data transfer clock CK1 to the recording signal RS.

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