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    • 4. 发明专利
    • Optical pickup and optical disk apparatus
    • 光学拾取和光盘设备
    • JP2013093075A
    • 2013-05-16
    • JP2011233517
    • 2011-10-25
    • Hitachi Consumer Electronics Co Ltd日立コンシューマエレクトロニクス株式会社Hitachi-Lg Data Storage Inc株式会社日立エルジーデータストレージ
    • KITAYAMA AKIRAKAKU TOSHIMITSUHAMADA KAZUHIDE
    • G11B7/1263G11B7/12G11B7/1267
    • G11B7/12G11B7/00456G11B7/126
    • PROBLEM TO BE SOLVED: To provide an optical pickup capable of reducing electromagnetic radiation in a low cost when recording and reproducing, and an optical disk using the optical pickup.SOLUTION: The optical pickup comprises: a laser diode for modulating a laser beam in accordance to driving current such as a write strategy signal; a driver having a first output end of the laser diode driving current; first lines for electrically connecting the first output end of the driver and a first terminal of the laser diode; second lines wired adjacent to at least one part of a signal line and for electrically connecting a second terminal of the laser diode and an output terminal of the driver; a printed wiring board including the first and the second lines; a metal heat radiation cover for the driver; and an optical pickup body including a lens and the like. The first lines and the second lines are vertically arranged to thereby have a two-layer structure. In the two-layer structure, either one of the first lines and the second lines, which is closer to the heat radiation cover than the other, has a wider line width than that of the other.
    • 要解决的问题:提供一种能够在记录和再现时以低成本降低电磁辐射的光学拾取器,以及使用该光学拾取器的光盘。 光拾取器包括:激光二极管,用于根据诸如写策略信号的驱动电流来调制激光束; 具有激光二极管驱动电流的第一输出端的驱动器; 第一线用于电连接驱动器的第一输出端和激光二极管的第一端; 与信号线的至少一部分相邻地布线的第二线,并且用于电连接激光二极管的第二端和驱动器的输出端; 包括第一和第二线的印刷线路板; 用于驾驶员的金属散热罩; 以及包括透镜等的光学拾取器本体。 第一线和第二线垂直布置,从而具有两层结构。 在两层结构中,比另一层更靠近散热罩的第一线和第二线中的任一条具有比另一条更宽的线宽。 版权所有(C)2013,JPO&INPIT
    • 6. 发明专利
    • Optical disk device
    • 光盘设备
    • JP2012252743A
    • 2012-12-20
    • JP2011124878
    • 2011-06-03
    • Funai Electric Co Ltd船井電機株式会社
    • SHIMIZU MASAYA
    • G11B7/1263G11B7/004G11B7/005G11B7/126G11B7/1267G11B7/1392
    • G11B7/0945G11B7/0956G11B7/126G11B7/1376G11B2220/2537
    • PROBLEM TO BE SOLVED: To provide an optical disk device capable of performing proper temperature control by accurately detecting temperature around an optical pickup.SOLUTION: An disk device 1 includes: an optical pickup 20 that projects light onto an optical disk D and receives the light reflected from the optical disk D; a temperature sensor 40 for detecting ambient temperature of the optical pickup 20; and a temperature control processing unit 55 that executes temperature control processing based on temperature information obtained from the temperature sensor 40. A filter unit 543 is provided to perform signal filtering before input of the temperature information detected by the temperature sensor 40 in the temperature control processing unit 55.
    • 解决的问题:提供能够通过精确地检测光学拾取器周围的温度来进行适当的温度控制的光盘装置。 解决方案:盘装置1包括:光拾取器20,其将光投射到光盘D上并接收从光盘D反射的光; 用于检测光学拾取器20的环境温度的温度传感器40; 以及温度控制处理单元55,其基于从温度传感器40获得的温度信息执行温度控制处理。提供滤波器单元543,以在温度控制处理中输入由温度传感器40检测到的温度信息之前进行信号滤波 单位55.版权所有(C)2013,JPO&INPIT
    • 8. 发明专利
    • Optical pickup head, information recording device, reproducer, and method
    • 光学拾取头,信息记录装置,再现器和方法
    • JP2012185883A
    • 2012-09-27
    • JP2011048181
    • 2011-03-04
    • Toshiba Corp株式会社東芝
    • WATABE KAZUOOKANO HIDEAKIUSUI TAKASHITANIOKA CHIKARAOGAWA AKITODOI KAZUAKI
    • G11B7/135G11B7/004G11B7/09
    • G11B7/14G11B7/0045G11B7/126G11B7/1376G11B7/24038G11B7/2405
    • PROBLEM TO BE SOLVED: To enable recording and reproduction of data with a high speed.SOLUTION: An information recording and reproducing device includes a light source, a first objective lens, a second objective lens, a driving unit, a first control unit, a second control unit, and a light receiving unit. The light source projects a light bundle to an information recording medium having a plurality of information recording layers. The first objective lens collects a light bundle from a first light soure on a first information recording layer to form a first light spot. The second objective lens collects a light bundle from a second light source on a second information recording layer to form a second light spot. The driving unit moves the first and second objective lenses in a first direction being a vertical direction with respect to a direction of recording information in a track and showing a direction on an information recording layer surface, and in a second direction showing a lamination direction of the information recording layers. The first control unit restores positional deviation of the first light spot from a target track to the target track along the first direction. The second control unit controls a movement direction of the position of the second light spot in the second direction. The light receiving unit receives each of reflection light beams being the light bundles reflected at the first and second information recording layers.
    • 要解决的问题:实现高速数据的记录和再现。 解决方案:信息记录和再现装置包括光源,第一物镜,第二物镜,驱动单元,第一控制单元,第二控制单元和光接收单元。 光源将光束投射到具有多个信息记录层的信息记录介质。 第一物镜在第一信息记录层上从第一光源收集光束以形成第一光点。 第二物镜从第二信息记录层上的第二光源收集光束以形成第二光斑。 驱动单元使第一和第二物镜相对于记录在轨道中的信息的方向的垂直方向的第一方向移动,并且示出信息记录层表面上的方向,并且在第二方向上显示层叠方向 信息记录层。 第一控制单元沿着第一方向恢复第一光点从目标轨迹到目标轨道的位置偏差。 第二控制单元控制第二光点在第二方向上的位置的移动方向。 光接收单元接收作为在第一和第二信息记录层反射的光束的反射光束。 版权所有(C)2012,JPO&INPIT