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    • 23. 发明授权
    • Lens driving mechanism for optical pickup and optical disc apparatus
    • 用于光学拾取器和光盘装置的透镜驱动机构
    • US08341657B2
    • 2012-12-25
    • US12542078
    • 2009-08-17
    • Tatsuya YamasakiYoshihiro SatoSeiichi KatoKatsuhiko KimuraTakahiro YamaguchiYoshiro KonishiHidenao Saito
    • Tatsuya YamasakiYoshihiro SatoSeiichi KatoKatsuhiko KimuraTakahiro YamaguchiYoshiro KonishiHidenao Saito
    • G11B7/135
    • G11B7/08582
    • An optical pickup, mounting a lens actuator 101 thereon, the lens actuator comprises: a lens 1 having an optical axis in direction in parallel with an optical disc; a holder 2, which holds the lens thereon; a first guide shaft 3 holding the holder, so as to regulate the holder to change a position thereof, into an inner surface direction of a surface having the optical axis of the lens as a normal line vector thereof; a second guide shaft 4, which regulates the holder to change the position thereof, into a normal line vector of an optical disc; and a reed screw, which moves the holder into direction of the optical axis of the lens, wherein a distance between the optical axis of the lens and the optical disc, a distance between a central axis of the first guide shaft and the optical disc, and a distance between a central axis of the second guide shaft and the optical disc are lager than a distance between a central axis of the reed screw and the optical disc.
    • 在其上安装透镜致动器101的光学拾取器,透镜致动器包括:具有与光盘平行的方向的光轴的透镜1; 在其上保持透镜的保持器2; 保持保持器的第一引导轴3,以将保持器的位置调整为具有透镜的光轴的表面的内表面方向作为其法线矢量; 第二引导轴4,其将保持器改变其位置,调节成光盘的法线矢量; 以及将保持器移动到透镜的光轴的方向的簧片螺钉,其中透镜的光轴与光盘之间的距离,第一引导轴的中心轴线与光盘之间的距离, 并且第二引导轴的中心轴线与光盘之间的距离大于簧片螺钉的中心轴线与光盘之间的距离。
    • 25. 发明申请
    • OBJECT LENS ACTUATOR AND DISC DRIVE USING THE SAME
    • 对象镜头执行器和使用它的盘驱动器
    • US20120051197A1
    • 2012-03-01
    • US13207518
    • 2011-08-11
    • Manabu OCHIKatsuhiko KimuraTakahiro YamaguchiSouichirou Yamada
    • Manabu OCHIKatsuhiko KimuraTakahiro YamaguchiSouichirou Yamada
    • G11B7/00G02B7/04
    • G11B7/1374G11B7/0935G11B7/22
    • The present invention provides an object lens actuator in which a tilt of an object lens due to a change of an ambient temperature is inhibited even when a metal member is attached to a resin based securing part. It is desirable to improve quality of writing and playing in a disc drive using the object lens actuator. This is achieved by coupling a metal member having a flat portion and bent portions to a securing part near top ends of the bent portions. The flat portion has a normal in the focusing direction. The bent portions extend in the focusing direction from the respective ends of the flat portion in the tracking direction. The securing part has an opening therethrough in the focusing direction, and in the opening, the metal member and the securing part may be coupled between each outermost two support members in the focusing direction.
    • 本发明提供一种物镜致动器,其中即使当金属构件附接到基于树脂的固定部分时,由于环境温度的变化而导致的物镜的倾斜被抑制。 期望使用物镜致动器提高在盘驱动器中的写入和播放质量。 这通过将具有平坦部分的金属构件和弯曲部分耦合到靠近弯曲部分的顶端附近的固定部分来实现。 平坦部分在聚焦方向上具有法线。 弯曲部沿着跟踪方向从平坦部分的相应端在聚焦方向上延伸。 固定部分在聚焦方向上具有穿过其的开口,并且在开口中,金属构件和固定部分可以在聚焦方向上联接在每个最外面的两个支撑构件之间。
    • 27. 发明授权
    • Digital modulator, digital modulating method, digital transceiver system, and testing apparatus
    • 数字调制器,数字调制方式,数字收发系统和测试仪器
    • US08014465B2
    • 2011-09-06
    • US12136048
    • 2008-06-10
    • Kiyotaka IchiyamaMasahiro IshidaTakahiro Yamaguchi
    • Kiyotaka IchiyamaMasahiro IshidaTakahiro Yamaguchi
    • H04L27/00
    • H04L27/365H03C5/00H04L27/2092
    • Provided is a digital modulator, including a carrier wave output section that outputs a carrier wave, a variable delay section that delays the carrier wave, and a delay amount setting section that sets a delay amount by which the variable delay section delays the carrier wave based on transmission data being transmitted by the carrier wave. The variable delay section may include a multi-stage delay buffer circuit in which delay buffers that delay an input signal by a unit shift amount are connected in a cascade connection, the multi-stage delay buffer circuit may receive the carrier wave at a first-stage delay buffer as input, and the delay amount setting section may include a multiplexer that selects either an output from the carrier wave output section or an output from each stage of the multi-stage delay buffer circuit.
    • 提供了一种数字调制器,包括输出载波的载波输出部分,延迟载波的可变延迟部分和设置可变延迟部分延迟载波的延迟量的延迟量设置部分 在由载波发送的发送数据上。 可变延迟部分可以包括多级延迟缓冲电路,其中延迟缓冲器将输入信号延迟单位偏移量连接在级联中,多级延迟缓冲电路可以以第一级延迟缓冲电路接收载波, 延迟量设定部可以包括选择来自载波输出部的输出或多级延迟缓冲电路的各级的输出的多路复用器。