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139 条记录 (耗时 0.043 秒)

    Light detector
    51.
    发明授权
    Light detector 失效
    光检测器

    公开(公告)号：US4926036A

    公开(公告)日：1990-05-15

    申请号：US338074

    申请日：1989-04-14

    申请人： Takanori Maeda

    发明人： Takanori Maeda

    IPC分类号： G11B7/09 ,  G11B7/13 ,  H01L27/144 ,  H01L31/02

    CPC分类号： H01L27/1443 ,  G11B7/13 ,  H01L31/02024

    摘要： A light detector for receiving and detecting a beam of light which includes a plurality of light-detecting areas, and a separating area for separating the light-detecting areas. A portion of the separating area outside an area in which the beam of light is applied has a width which is greater than the width of a portion of the separating area inside the area in which the beam of light is applied, thereby reducing the coupling capacity between light-detecting areas and allowing the light-detecting areas to be increased.

    摘要翻译： 一种用于接收和检测包括多个光检测区域的光束的光检测器和用于分离光检测区域的分离区域。 施加光束的区域外的分离区域的一部分的宽度大于施加光束的区域内的分离区域的一部分的宽度，从而降低耦合容量 在光检测区域之间并允许增加光检测区域。

    Optical pickup device having particularly shaped photodetectors for providing an accurate focus error
    52.
    发明授权
    Optical pickup device having particularly shaped photodetectors for providing an accurate focus error 失效
    具有特别成形的光电检测器的光学拾取装置用于提供准确的聚焦误差

    公开(公告)号：US4914646A

    公开(公告)日：1990-04-03

    申请号：US177734

    申请日：1988-04-05

    申请人： Takanori Maeda

    发明人： Takanori Maeda

    IPC分类号： G02B7/28 ,  G11B7/09 ,  G11B7/13

    CPC分类号： G11B7/133 ,  G11B7/094 ,  G11B7/0909

    摘要： An optical pickup device for supplying a correct focus error signal. The optical pickup device includes a light source for generating a light beam; a recording medium for receiving and reflecting the light beam; and a photo-detector for receiving the reflected light beam from the recording medium and for outputting a focus error signal of the light beam. The photo-detector is divided into at least two regions and includes a reference portion within the at least two regions. When the light beam received by the photo-detector is not within the reference portion of the photo-detector, a portion of the light beam is not detected by at least one of the at least two regions, thereby supplying a correct focus error signal.

    Focus control device
    53.
    发明授权
    Focus control device 失效
    对焦控制装置

    公开(公告)号：US4691098A

    公开(公告)日：1987-09-01

    申请号：US792560

    申请日：1985-10-29

    申请人： Takanori Maeda

    发明人： Takanori Maeda

    IPC分类号： G02B7/28 ,  G11B7/09 ,  G01J1/20 ,  G01J1/24 ,  G11B7/00 ,  G11B20/22

    CPC分类号： G11B7/0917 ,  G11B7/0908 ,  G11B2007/0919

    摘要： A focus control device comprises a light source; a recording medium on which light from the light source is focused; an objective lens for focusing light from the light source on the recording medium; a light receiving element for receiving the light reflected from the recording medium; an optical unit disposed in the optical path of the reflected light; and a beam splitter for separating the reflected light from an incident light path to the recording medium. The optical unit comprises absorbing parts adapted to absorb a part of the reflected light and transmitting parts adapted to transmit a part of said reflected light, and the absorbing parts forming a predetermined angle with respect to the optical axis of the reflected light.

    摘要翻译： 聚焦控制装置包括光源; 来自光源的光聚焦的记录介质; 用于将来自光源的光聚焦在记录介质上的物镜; 用于接收从记录介质反射的光的光接收元件; 设置在反射光的光路中的光学单元; 以及用于将入射光路的反射光分离到记录介质的分束器。 光学单元包括适于吸收一部分反射光的吸收部分和适于透射部分所述反射光的透射部分，以及相对于反射光的光轴形成预定角度的吸收部分。

    Physical properties detection device and physical properties detection method
    55.
    发明授权
    Physical properties detection device and physical properties detection method 失效
    物理性质检测装置及物理性质检测方法

    公开(公告)号：US08138746B2

    公开(公告)日：2012-03-20

    申请号：US12532129

    申请日：2007-03-20

    申请人： Kiyoshi Tateishi ,  Takanori Maeda ,  Hideki Kobayashi ,  Tomotaka Yabe

    发明人： Kiyoshi Tateishi ,  Takanori Maeda ,  Hideki Kobayashi ,  Tomotaka Yabe

    IPC分类号： G01N27/00

    CPC分类号： G11B9/02 ,  G11B9/06

    摘要： A physical properties detection device comprising a probe to be placed near or touching a surface of a ferroelectric; an oscillation loop including the probe and capacitance within the ferroelectric; and detection means for detecting a physical properties of the ferroelectric on the basis of a frequency variation of a measurement signal generated in the oscillation loop, the frequency variation accompanying application of an alternating electric field to the ferroelectric; and the physical properties detection device is further comprising frequency conversion means for converting the frequency of the measurement signal to a low frequency and outputting the resulting signal as a converted measurement signal; frequency control means for controlling the frequency of the converted measurement signal so as to match a target frequency; frequency detection means for generating a frequency detection signal that has a signal level corresponding to the frequency of the converted measurement signal; and synchronous detection means for synchronously detecting the frequency detection signal on the basis of a synchronization signal.

    摘要翻译： 一种物理特性检测装置，包括放置在铁电体表面附近或接触铁电体的探针; 包括铁电体内探针和电容的振荡回路; 以及检测装置，用于基于在振荡环路中产生的测量信号的频率变化，伴随向铁电体施加交变电场的频率变化来检测铁电体的物理性质; 物理特性检测装置还包括频率转换装置，用于将测量信号的频率转换为低频，并将所得信号作为转换的测量信号输出; 频率控制装置，用于控制转换的测量信号的频率以便匹配目标频率; 频率检测装置，用于产生具有与转换的测量信号的频率对应的信号电平的频率检测信号; 以及用于基于同步信号同步检测频率检测信号的同步检测装置。

    Driving apparatus
    57.
    发明授权
    Driving apparatus 失效
    驱动装置

    公开(公告)号：US08077588B2

    公开(公告)日：2011-12-13

    申请号：US11989295

    申请日：2006-07-26

    申请人： Takanori Maeda

    发明人： Takanori Maeda

    IPC分类号： G11B9/00

    CPC分类号： G11B9/1454 ,  G01Q80/00 ,  G11B9/02

    摘要： A driving apparatus is provided with: a stage structure on which a medium having a small recording domain is mounted; and a facing structure which is provided with at least one small action structure, which faces the medium, for performing a predetermined action to the medium, and which is displaced relatively on a predetermined flat surface with respect to the stage structure, the facing structure comprising a facing-side position detecting unit for detecting a relative reference position of the facing structure with respect to the stage structure, the stage structure comprising a stage-side position detecting unit for detecting a relative reference position of the facing structure with respect to the stage structure.

    摘要翻译： 一种驱动装置具有：其上安装有具有小记录域的介质的平台结构; 以及设置有面向介质的至少一个小动作结构的面向结构，用于对介质执行预定动作，并相对于相对于舞台结构在预定的平坦表面上相对移位，所述面对结构包括 面对侧位置检测单元，用于检测面对结构相对于平台结构的相对参考位置，所述平台结构包括台侧位置检测单元，用于检测面向结构相对于平台的相对参考位置 结构体。

    Information recording/reproducing apparatus and method using a plurality of probes
    58.
    发明授权
    Information recording/reproducing apparatus and method using a plurality of probes 失效
    使用多个探针的信息记录/再现装置和方法

    公开(公告)号：US08059519B2

    公开(公告)日：2011-11-15

    申请号：US12528559

    申请日：2007-02-27

    申请人： Takanori Maeda ,  Tomotaka Yabe

    发明人： Takanori Maeda ,  Tomotaka Yabe

    IPC分类号： G11B9/00

    CPC分类号： G11B9/1481 ,  B82Y10/00 ,  G11B9/1454

    摘要： An information recording/reproducing device is provided with a recording medium with a recording surface, a plurality of probes that carry out at least either record processing or reproduction processing by scanning a plurality of information tracks on the recording surface, a position detecting means that detects a position of at least one information track by using the probe for every plural divided regions into which the recording medium is divided in a direction intersecting the plural information tracks and which contain at least one information track, and a track control means that controls tracking of the probe used for at least either record processing or reproduction processing for every plural divided regions. Thus, the device structure can be simplified.

    摘要翻译： 一种信息记录/再现装置，具有记录表面的记录介质，通过扫描记录表面上的多个信息轨迹执行至少记录处理或再现处理的多个探针;位置检测装置，其检测 通过使用探头对与记录介质划分的多个分割区域中的至少一个信息轨道的位置在与多个信息轨道相交的方向上分割并且包含至少一个信息轨道的轨迹控制装置，以及控制跟踪控制装置 所述探针用于对于每个多个分割区域进行至少记录处理或再现处理。 因此，可以简化装置结构。

    Information recording/reproducing apparatus
    60.
    发明授权
    Information recording/reproducing apparatus 失效
    信息记录/重放装置

    公开(公告)号：US08004958B2

    公开(公告)日：2011-08-23

    申请号：US12297421

    申请日：2007-04-18

    申请人： Takanori Maeda ,  Kiyoshi Tateishi

    发明人： Takanori Maeda ,  Kiyoshi Tateishi

    IPC分类号： G11B9/02

    CPC分类号： G11B9/02 ,  B82Y10/00 ,  G11B9/1454 ,  Y10S977/947

    摘要： A probe group is composed of, for instance, four probes adjacently arranged, and one modulation circuit is arranged for each probe group. At the time of recoding information, a changeover switch connects one of the four probes with the modulation circuit, and subsequently changes the probes to be connected with the modulation circuit while reciprocal movement of a recording medium is being controlled.

    摘要翻译： 探针组由例如四个探针相邻排列组成，每个探针组设置一个调制电路。 在重新编码信息时，切换开关将四个探针中的一个连接到调制电路，随后在控制记录介质的往复运动的同时改变要与调制电路连接的探针。