公开(公告)号：US20080279071A1

公开(公告)日：2008-11-13

申请号：US12116551

申请日：2008-05-07

Applicant: Ching-Chuan CHEN ,  Yi-Chun LIN

Inventor： Ching-Chuan CHEN ,  Yi-Chun LIN

IPC: G11B20/18

CPC classification number: G11B7/0948 ,  G01N21/9506 ,  G11B7/0053 ,  G11B20/18

Abstract: A method for detecting a defect of an optical disc includes steps of: confirming an optical pickup head being accessing data in a track on state; determining a defective region of the optical disc according to a peak-to peak value of a wobble signal; and, maintaining the optical pickup head being unchanged when the defective region is detected.

Abstract translation: 一种用于检测光盘的缺陷的方法，包括以下步骤：确认光拾取头正在进入轨道打开状态的数据; 根据摆动信号的峰值到峰值确定光盘的缺陷区域; 并且当检测到缺陷区域时，保持光学拾取头不变。

公开(公告)号：US20180195296A1

公开(公告)日：2018-07-12

申请号：US15402605

申请日：2017-01-10

Applicant: Ching-Chuan CHEN

Inventor： Ching-Chuan CHEN

IPC: E04F21/20

CPC classification number: E04F21/20 ,  E04F21/22

Abstract: A board adjuster is provided, including an adjusting member and a positioning member. The adjusting member includes a toggling portion and an insertion portion, the insertion portion has two restricting members extending oppositely, the toggling portion has two recessive portions, and the insertion portion is located between two recessive portions. The positioning member has a slot. The insertion portion is for being inserted into a gap between two boards, the positioning member is for abutting against and between the two boards and the toggling portion, the insertion portion is disposed through the slot, the positioning member is disposed through the two recessive portions, the positioning member abuts against the two recessive portions so that the two restricting members respectively abut against a side of one of the two boards away from the toggling portion.