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17 条记录 (耗时 0.021 秒)

    Device for optically tracking information
    1.
    发明授权
    Device for optically tracking information 失效
    用于光学跟踪信息的设备

    公开(公告)号：US4541082A

    公开(公告)日：1985-09-10

    申请号：US443033

    申请日：1982-11-19

    申请人： Tatsuo Horikoshi ,  Seiji Yonezawa ,  Toshiaki Tsuyoshi ,  Hiroshi Tooyama ,  Masatoshi Otake

    发明人： Tatsuo Horikoshi ,  Seiji Yonezawa ,  Toshiaki Tsuyoshi ,  Hiroshi Tooyama ,  Masatoshi Otake

    IPC分类号： G11B7/09 ,  G11B7/12 ,  G11B21/10

    CPC分类号： G11B7/0901

    摘要： A device for optically tracking information recorded on an optical disc wherein a photodetector is disposed on the optical axis of an optical system for guiding diffracted waves to the photodetector. The origin of a fictitious X-Y coordinate system at the photodetector is placed on the above-mentioned optical axis, X- and Y-axes of the coordinate system are made parallel to and perpendicular to an information track having the information pits on the rotating recording medium, and the photodetector is divided into four equal parts. A first summation signal indicating the sum of output signals from the four parts of the photodetector is converted into a binary signal, and a difference signal between second summation signals each indicating the sum of output signals from a pair of photodetector parts facing each other with the origin of the coordinate system therebetween is converted into another binary signal. A signal indicating a direction in which the light beam deviates from the information track, is formed on the basis of the above-mentioned binary signals, and a tracking signal indicating the deviation of the light beam from the information track is formed by full-wave rectifying the difference signal and modifying the rectified signal with the above-mentioned direction indicating signal.

    摘要翻译： 一种用于光学跟踪记录在光盘上的信息的装置，其中光电检测器设置在用于将衍射波引导到光电检测器的光学系统的光轴上。 将光电检测器上的虚拟XY坐标系的原点置于上述光轴上，坐标系的X轴和Y轴平行于和垂直于在旋转记录介质上具有信息凹坑的信息轨道 ，并且光电检测器被分成四等份。 指示来自光电检测器的四个部分的输出信号之和的第一求和信号被转换为二进制信号，以及第二求和信号之间的差分信号，每个信号表示来自一对彼此面对的光检测器部分的输出信号之和， 其间的坐标系的原点被转换为另一个二进制信号。 基于上述二进制信号形成指示光束偏离信息轨道的方向的信号，并且指示光束与信息轨道的偏离的跟踪信号由全波形成 整流差分信号，并用上述方向指示信号修正整流信号。

    Optical information tracking apparatus
    2.
    发明授权
    Optical information tracking apparatus 失效
    光信息跟踪装置

    公开(公告)号：US4504937A

    公开(公告)日：1985-03-12

    申请号：US454489

    申请日：1982-12-29

    申请人： Seiji Yonezawa ,  Tatsuo Horikoshi ,  Toshiaki Tsuyoshi

    发明人： Seiji Yonezawa ,  Tatsuo Horikoshi ,  Toshiaki Tsuyoshi

    IPC分类号： G11B7/09 ,  G11B7/12 ,  H04N5/76 ,  G11B7/00

    CPC分类号： G11B7/0901 ,  G11B7/12

    摘要： An optical information tracking apparatus for reproducing information by applying light beam onto a track on a rotating record medium, sensing the diffracted light beam thus generated by means of a photodetector and transforming the diffracted light beam into electrical signals, wherein the origin of said photodetector is aligned with the light axis of the optical system, the X axis is placed in parallel with the direction of said track, the Y axis is placed perpendicular to said track. Electrical signals are taken out respectively from photodetector elements which exist respectively in the first, second, third and fourth quadrants. A difference signal representing the difference between a signal which is the sum of the output signal from the first quadrant and that from the third quadrant and a signal which is the sum of the output signal from the second quadrant and that from the fourth quadrant as well as a sum signal representing the sum of output signals from the first to fourth quadrants are calculated. The positive peak value and the negative peak value of said difference signal are held respectively in peak hold circuits, and occurrences of a positive peak and a negative peak of said sum signal fed from the quadrant photodetector are detected to reset said peak hold circuits when a peak of said sum signal having either positive or negative polarity occurs and to effect sample and hold function for a signal which represents the sum of outputs from said peak hold circuits when a peak of said sum signal having the polarity opposite to said polarity occurs so as to obtain the tracking signal.

    摘要翻译： 一种光学信息跟踪装置，用于通过将光束施加到旋转记录介质上的轨道上来再现信息，感测由光电检测器产生的衍射光束，并将衍射光束变换成电信号，其中所述光电探测器的原点是 与光学系统的光轴对准，X轴与所述轨道的方向平行放置，Y轴垂直于所述轨道放置。 电信号分别从存在于第一，第二，第三和第四象限中的光检测元件取出。 表示作为来自第一象限的输出信号与来自第三象限的输出信号之和的信号与来自第二象限的输出信号之和的信号之差的差分信号以及来自第四象限的信号 作为表示来自第一至第四象限的输出信号之和的和信号。 所述差分信号的正峰值和负峰值分别保持在峰值保持电路中，并且检测从四分之一光电检测器馈送的所述和信号的正峰值和负峰值的出现，以便当所述峰值保持电路 发生具有正极性或负极性的所述和信号的峰值，并且对于表示与所述极性相反极性的所述和信号的峰值发生时表示来自所述峰值保持电路的输出的和的信号，实现采样和保持功能， 以获得跟踪信号。

    Access point
    4.
    发明授权
    Access point 失效
    切入点

    公开(公告)号：US07953406B2

    公开(公告)日：2011-05-31

    申请号：US11540554

    申请日：2006-10-02

    申请人： Takashi Itamiya ,  Tatsuo Horikoshi ,  Kuniaki Akatsuka ,  Taketoshi Arakawa ,  Shigeyuki Sudo

    发明人： Takashi Itamiya ,  Tatsuo Horikoshi ,  Kuniaki Akatsuka ,  Taketoshi Arakawa ,  Shigeyuki Sudo

    IPC分类号： H04W24/00

    CPC分类号： H04W24/00

    摘要： An access point diagnosis unit 201 controls a radio access terminal portion 213 included in the access point 100, to execute a test of connection with the access point 100. A switch within the access point selectively connects the radio access terminal portion 213, with any of an antenna and radio reception parts of the own access point 100. In accordance with a failing part, the failure information which contains the failing part and/or a failure content is transmitted from the radio access terminal portion 213 to the radio access terminal 108 (1) along a first path tracing the radio reception part connected by the switch, etc. of the access point 100, or (2) along a second path tracing the antenna connected by the switch and the other access point 101.

    摘要翻译： 接入点诊断单元201控制接入点100中包括的无线接入终端部分213，以执行与接入点100的连接测试。接入点内的交换机选择性地将无线电接入终端部分213与 根据故障部分，将包含故障部分和/或故障内容的故障信息从无线接入终端部分213发送到无线接入终端108（ 1）沿着跟踪由接入点100的交换机等连接的无线电接收部分的第一路径，或（2）沿着跟踪由交换机和另一个接入点101连接的天线的第二路径。