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    Recording and reproducing method, recording and reproducing device and semiconductor circuit
    1.
    发明申请
    Recording and reproducing method, recording and reproducing device and semiconductor circuit 审中-公开
    记录和再现方法，记录和再现装置和半导体电路

    公开(公告)号：US20050094506A1

    公开(公告)日：2005-05-05

    申请号：US10949329

    申请日：2004-09-27

    申请人： Tetsuya Shihara ,  Hiromichi Ishibashi ,  Yuu Okada

    发明人： Tetsuya Shihara ,  Hiromichi Ishibashi ,  Yuu Okada

    IPC分类号： G11B7/00 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/09

    CPC分类号： G11B7/0945

    摘要： An optical disk information recording and reproducing device (100), which is used for recording and reproducing information on an optical disk (10), includes a system controller (19), a tracking control portion (15), a focus control portion (16) and an aberration correction portion (17). The system controller (19) adjusts a control parameter for recording and reproducing control of the optical disk (10) by using a tracking error signal TE that is detected from an region (30) having a wide track pitch on the optical disk (10). The tracking control portion (15), the focus control portion (16) and the aberration correction portion (17) record and reproduce information on the optical disk (10) by using the adjusted control parameter.

    摘要翻译： 一种用于在光盘（10）上记录和再现信息的光盘信息记录和再现装置（100）包括系统控制器（19），跟踪控制部分（15），聚焦控制部分（16） ）和像差校正部（17）。 系统控制器（19）通过使用从光盘（10）上具有宽轨道间距的区域（30）检测到的跟踪误差信号TE来调节用于记录和再现光盘（10）的控制参数， 。 跟踪控制部分（15），聚焦控制部分（16）和像差校正部分（17）通过使用调节的控制参数在光盘（10）上记录和再现信息。

    Optical disc drive
    2.
    发明申请
    Optical disc drive 失效
    光盘驱动器

    公开(公告)号：US20050254403A1

    公开(公告)日：2005-11-17

    申请号：US10524896

    申请日：2003-10-06

    申请人： Hiromichi Ishibashi ,  Tetsuya Shihara ,  Hisashi Senga ,  Toshio Matsumoto

    发明人： Hiromichi Ishibashi ,  Tetsuya Shihara ,  Hisashi Senga ,  Toshio Matsumoto

    IPC分类号： G11B7/125 ,  G11B7/00

    CPC分类号： G11B7/126

    摘要： In an optical disc drive, a laser light source emits a laser beam having an intensity changeable with the amount of drive current supplied. A first photodetector receives the laser beam reflected from an optical disc, thereby generating a readout signal. A second photodetector receives the laser beam, generates an electric signal representing the power of the laser beam received, and outputs the electric signal as a light quantity detection signal. A feedback control loop compares the level of the light quantity detection signal with a predetermined target value and regulates the drive current such that the level of the light quantity detection signal approaches the target value. In reading data from the optical disc, the target value is changed so as to compensate for a variation of the sensitivity of the second photodetector, thereby controlling the power of the laser beam emitted from the laser light source.

    摘要翻译： 在光盘驱动器中，激光光源发射具有随供给的驱动电流量而变化的强度的激光束。 第一光电检测器接收从光盘反射的激光束，从而产生读出信号。 第二光电检测器接收激光束，产生表示所接收的激光束的功率的电信号，并将该电信号作为光量检测信号输出。 反馈控制环路将光量检测信号的电平与预定目标值进行比较，并且调节驱动电流，使得光量检测信号的电平接近目标值。 在从光盘读取数据时，改变目标值以补偿第二光电检测器的灵敏度的变化，从而控制从激光光源发射的激光束的功率。

    Optical disc drive for controlling laser emission
    3.
    发明授权
    Optical disc drive for controlling laser emission 失效
    用于控制激光发射的光盘驱动器

    公开(公告)号：US07177253B2

    公开(公告)日：2007-02-13

    申请号：US10524896

    申请日：2003-10-06

    申请人： Hiromichi Ishibashi ,  Tetsuya Shihara ,  Hisashi Senga ,  Toshio Matsumoto

    发明人： Hiromichi Ishibashi ,  Tetsuya Shihara ,  Hisashi Senga ,  Toshio Matsumoto

    IPC分类号： G11B7/00

    CPC分类号： G11B7/126

    摘要： In an optical disc drive, a laser light source emits a laser beam having an intensity changeable with the amount of drive current supplied. A first photodetector receives the laser beam reflected from an optical disc, thereby generating a readout signal. A second photodetector receives the laser beam, generates an electric signal representing the power of the laser beam received, and outputs the electric signal as a light quantity detection signal. A feedback control loop compares the level of the light quantity detection signal with a predetermined target value and regulates the drive current such that the level of the light quantity detection signal approaches the target value. In reading data from the optical disc, the target value is changed so as to compensate for a variation of the sensitivity of the second photodetector, thereby controlling the power of the laser beam emitted from the laser light source.

    摘要翻译： 在光盘驱动器中，激光光源发射具有随供给的驱动电流量而变化的强度的激光束。 第一光电检测器接收从光盘反射的激光束，从而产生读出信号。 第二光电检测器接收激光束，产生表示所接收的激光束的功率的电信号，并将该电信号作为光量检测信号输出。 反馈控制环路将光量检测信号的电平与预定目标值进行比较，并且调节驱动电流，使得光量检测信号的电平接近目标值。 在从光盘读取数据时，改变目标值以补偿第二光电检测器的灵敏度的变化，从而控制从激光光源发射的激光束的功率。

    Optical disc medium, data recording method, and data recording apparatus
    6.
    发明申请
    Optical disc medium, data recording method, and data recording apparatus 失效
    光盘介质，数据记录方法和数据记录装置

    公开(公告)号：US20080074988A1

    公开(公告)日：2008-03-27

    申请号：US11898441

    申请日：2007-09-12

    申请人： Jacobus Heemskerk ,  Cornelis Schep ,  Aalbert Stek ,  Hiromichi Ishibashi ,  Shigeru Furumiya ,  Shoei Kobayashi ,  Jun Nakano

    发明人： Jacobus Heemskerk ,  Cornelis Schep ,  Aalbert Stek ,  Hiromichi Ishibashi ,  Shigeru Furumiya ,  Shoei Kobayashi ,  Jun Nakano

    IPC分类号： G11B7/24

    CPC分类号： G11B7/00736 ,  G11B7/007 ,  G11B7/24082

    摘要： An optical disc medium 10 having a wobbled track groove 12 includes three wobble patterns including a flat wobble pattern, a positive pulse wobble pattern, and a negative pulse wobble pattern. In the flat wobble pattern, the amplitude of the wobble from the lengthwise direction of the track groove is zero such that the track groove is flat. In the positive pulse wobble pattern, the amplitude of the wobble from the lengthwise direction of the track groove is positive such that the track groove is wobbled in a first direction perpendicular to the lengthwise direction. Further, in the negative pulse wobble pattern, the amplitude of the wobble from the lengthwise direction of the track groove is negative such that the track groove is wobbled in a second direction opposite to the first direction. Then, three data values can be recorded using three distinctive wobble patterns.

    摘要翻译： 具有摆动轨道槽12的光盘介质10包括三个摆动图案，包括平摆动图案，正脉冲摆动图案和负脉冲摆动图案。 在平坦摆动图案中，轨道槽的纵向的摆动幅度为零，使得轨道槽平坦。 在正脉冲摆动图案中，从轨道槽的长度方向摆动的振幅为正，使得轨道槽在与长度方向垂直的第一方向上摆动。 此外，在负脉冲摆动图案中，从轨道槽的长度方向的摆动的振幅为负，使得轨道槽在与第一方向相反的第二方向上摆动。 然后，可以使用三种不同的摆动模式记录三个数据值。

    Method and an apparatus for reproducing information based on reference wobble block and an information wobble block on an information recording medium
    7.
    发明授权
    Method and an apparatus for reproducing information based on reference wobble block and an information wobble block on an information recording medium 有权
    用于在信息记录介质上基于参考摆动块和信息摆动块再现信息的方法和装置

    公开(公告)号：US07315497B2

    公开(公告)日：2008-01-01

    申请号：US10300853

    申请日：2002-11-21

    申请人： Junichi Minamino ,  Masahito Nakao ,  Shigeru Furumiya ,  Hiromichi Ishibashi

    发明人： Junichi Minamino ,  Masahito Nakao ,  Shigeru Furumiya ,  Hiromichi Ishibashi

    IPC分类号： G11B7/00

    CPC分类号： G11B20/1403 ,  G11B7/0053 ,  G11B7/24082

    摘要： At the time of heterodyne detection, information is reproduced constantly in the optimum condition. A method reproduces information recording medium including a reference wobble block which has a first wobble pattern representing a first information content; and an information wobble block which follows the reference wobble block and which has at least one of the first wobble pattern and a second wobble pattern representing a second information and different from the first wobble pattern. The method includes reading the reference wobble block and the information wobble block; comparing a wobble pattern read from the information wobble block with the first wobble pattern of the reference wobble block; judging that information recorded in the information wobble block is the first information or the second information according to the wobble pattern read from the information wobble block; and outputting one of the first and the second information based on the judging result.

    摘要翻译： 在外差检测时，在最佳条件下不断地再现信息。 一种方法再现包括具有表示第一信息内容的第一摆动模式的参考摆动块的信息记录介质; 以及跟随参考摆动块并且具有表示第二信息并且不同于第一摆动图案的第一摆动图案和第二摆动图案中的至少一个的信息摆动块。 该方法包括读取参考摆动块和信息摆动块; 将从信息摆动块读取的摆动模式与参考摆动块的第一摆动模式进行比较; 判断记录在信息摆动块中的信息是根据从信息摆动块读取的摆动模式的第一信息或第二信息; 并基于判断结果输出第一和第二信息之一。