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    • 1. 发明专利
    • Optical pickup device compensating thickness deviation of optical recording medium
    • 光学拾取装置补偿光记录介质的厚度偏差
    • JP2008262692A
    • 2008-10-30
    • JP2008156568
    • 2008-06-16
    • Tae-Sun Songタエ−サン ソン
    • SONG TAE-SUN
    • G11B7/12G11B7/135G11B7/09G11B7/125
    • G11B7/1376B82Y10/00G11B7/0908G11B7/0948G11B7/1387G11B2007/13727
    • PROBLEM TO BE SOLVED: To provide an optical pickup device capable of compensating for thickness deviation of an optical recording medium. SOLUTION: The optical pickup device includes a light source 110, a collimator lens 120 converting the beams therefron into parallel beams, an objective lens system 170 including a solid immersion lens 180 having a flat plane facing a substrate 201 of an optical recording medium 200, a focus control unit 300, and a position adjusting unit 310 for moving a position of the light source 110 or the collimator lens 120 by a focus signal from the focus control unit 300. If there is the thickness deviation of the optical recording medium 200, the position adjusting unit corrects the thickness deviation of the optical recording medium 200 by moving the position of the light source 110 or the collimator lens 120. Also, in the case of the optical pickup device of a finite optical system not using the collimator lens, the thickness deviation of the optical recording medium is corrected by connecting the position correction unit to the light source and adjusting the position of the light source by a focus control signal. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供能够补偿光学记录介质的厚度偏差的光学拾取装置。 解决方案:光学拾取装置包括光源110,准直透镜120将其中的光束转换为平行光束,物镜系统170包括固体浸没透镜180,该固体浸没透镜180具有面向光学记录基板201的平面 介质200,聚焦控制单元300和位置调整单元310,用于通过来自聚焦控制单元300的聚焦信号移动光源110或准直透镜120的位置。如果存在光学记录的厚度偏差 介质200,位置调整单元通过移动光源110或准直透镜120的位置来校正光学记录介质200的厚度偏差。另外,在不使用光源110的光学系统的光学拾取装置的情况下 准直透镜,通过将位置校正单元连接到光源并调节光源的位置来校正光学记录介质的厚度偏差 通过聚焦控制信号。 版权所有(C)2009,JPO&INPIT
    • 8. 发明授权
    • Method and apparatus for detecting received signal in wireless communication system
    • 用于在无线通信系统中检测接收信号的方法和装置
    • US08363742B2
    • 2013-01-29
    • US12837777
    • 2010-07-16
    • Hoi-Yoon JungSun-Min LimSang-Won KimMyung-Sun Song
    • Hoi-Yoon JungSun-Min LimSang-Won KimMyung-Sun Song
    • H04K1/10
    • H04L27/0006
    • A method for detecting a received signal includes: dividing the entire band of the received signal into N frequency components where N is a natural number larger than one, and deciding a reference frequency component containing a reference frequency as a first priority sensing band among the N frequency components; deciding the sensing priorities of the other (N−1) frequency components in such a manner that the sensing priorities spread in both directions from the first priority sensing band; calculating the magnitude of each of the N frequency components in accordance with the decided sensing priorities; comparing the calculated magnitude of the frequency component with a predetermined threshold value; and when the calculated magnitude of the frequency component is larger than the threshold value, determining that the received signal exists.
    • 用于检测接收信号的方法包括:将接收信号的整个频带划分为N个频率分量,其中N是大于1的自然数,并且将N中的包含参考频率的参考频率分量作为第一优先感测频带 频率分量; 以这样的方式确定另一(N-1)个频率分量的感测优先级,使得感测优先级从第一优先感测频带在两个方向上扩展; 根据所确定的感测优先级来计算每个N个频率分量的幅度; 将所述频率分量的所计算的幅度与预定阈值进行比较; 并且当计算出的频率分量的大小大于阈值时,确定接收到的信号存在。