公开(公告)号：US20050122861A1

公开(公告)日：2005-06-09

申请号：US10962577

申请日：2004-10-13

Applicant: Soo-han Park ,  Bong-gi Kim

Inventor： Soo-han Park ,  Bong-gi Kim

IPC: G11B7/00 ,  G11B7/09 ,  G11B7/135

CPC classification number: G11B7/1353 ,  G11B7/0903 ,  G11B2007/0006

Abstract: An optical pickup apparatus for reading and writing information from and to optical data media in different formats and a method thereof are provided. The optical pickup apparatus comprises a twin laser diode (Twin LD), a diffraction element for dividing a laser beam incident on a data medium into five beams, and an optical detector for focusing a laser beam reflected from the data medium to detect an information signal and signals for carrying out servo controls. The divided beams are focused on a predetermined location in based on a data medium format, and the beam reflected from the data medium is received on and detected from the corresponding photodiodes of the optical detector so that a focus error signal and a tracking error signal are generated.

Abstract translation: 提供了一种用于以不同格式从光学数据媒体读取和写入信息的光学拾取装置及其方法。 光拾取装置包括双激光二极管（Twin LD），用于将入射到数据介质上的激光束分成五束的衍射元件，以及用于聚焦从数据介质反射的激光束以检测信息信号的光检测器 和用于执行伺服控制的信号。 分割的光束基于数据介质格式聚焦在预定位置，并且从数据介质反射的光束被接收在光检测器的相应光电二极管上并从其检测，使得聚焦误差信号和跟踪误差信号为 生成。

公开(公告)号：US5978343A

公开(公告)日：1999-11-02

申请号：US960061

申请日：1997-10-29

Applicant: Soo-han Park ,  Won-seok Jung ,  Jong-hwa Won

Inventor： Soo-han Park ,  Won-seok Jung ,  Jong-hwa Won

IPC: G11B7/08 ,  G11B7/085 ,  G11B7/14 ,  G11B19/247 ,  H01L31/12 ,  G11B7/00

CPC classification number: G11B7/085 ,  G11B19/247 ,  G11B7/14

Abstract: A method of scanning multiple tracks uses an optical pickup to simultaneously emit a plurality of beams on a plurality of tracks on a disk, and satisfies the equations: N.sub.j =(N.sub.b -1)N.sub.g -1 and N.sub.r =N.sub.b N.sub.g -1. Here, N.sub.j represents the number of jumped tracks, N.sub.b represents the number of light beams, N.sub.g represents the interval between the light beams, and N.sub.r represents the number of reproduced tracks during a reproduction period.

Abstract translation: 扫描多个轨道的方法使用光学拾取器同时在盘上的多个轨道上发射多个光束，并且满足以下等式：Nj =（Nb-1）Ng-1和Nr = NbNg-1。 这里，Nj表示跳跃轨迹的数量，Nb表示光束的数量，Ng表示光束之间的间隔，Nr表示再现期间的再生轨迹的数量。