公开(公告)号：US08416662B2

公开(公告)日：2013-04-09

申请号：US13047772

申请日：2011-03-14

Applicant: Chi-Fan Yu ,  I-Chun Tseng ,  Kun-Hua Lu

Inventor： Chi-Fan Yu ,  I-Chun Tseng ,  Kun-Hua Lu

IPC: G11B7/00

CPC classification number: G11B20/10009 ,  G11B20/10305 ,  G11B2220/237 ,  G11B2220/2537 ,  G11B2220/2541 ,  G11B2220/2562

Abstract: An optical disc drive includes a disc holder, a pickup head, a focus servo, an S-curve identifying unit, a first counter, a second counter, a judging unit, a disc identifying unit, and a system controller. The optical disc drive can detect whether a disc exhibits vertical deviation. Upon detection, the optical disc drive restricts the maximum speed of data reading and writing. The judging unit determines whether the disc exhibits vertical deviation based on a comparison result of the number of the one or more S curves with a first preset value.

Abstract translation: 光盘驱动器包括盘保持器，拾取头，聚焦伺服器，S曲线识别单元，第一计数器，第二计数器，判断单元，盘识别单元和系统控制器。 光盘驱动器可以检测光盘是否呈现垂直偏差。 检测时，光盘驱动器限制数据读取和写入的最大速度。 判断单元基于具有第一预设值的一个或多个S曲线的数量的比较结果来确定盘是否呈现垂直偏差。

公开(公告)号：US20110235486A1

公开(公告)日：2011-09-29

申请号：US13047772

申请日：2011-03-14

Applicant: CHI-FAN YU ,  I-CHUN TSENG ,  KUN-HUA LU

Inventor： CHI-FAN YU ,  I-CHUN TSENG ,  KUN-HUA LU

IPC: G11B20/18

CPC classification number: G11B20/10009 ,  G11B20/10305 ,  G11B2220/237 ,  G11B2220/2537 ,  G11B2220/2541 ,  G11B2220/2562

Abstract: An optical disc drive includes a disc holder, a pickup head, a focus servo, an S-curve identifying unit, a first counter, a second counter, a judging unit, a disc identifying unit, and a system controller. The optical disc drive can detect whether a disc exhibits vertical deviation. Upon detection, the optical disc drive restricts the maximum speed of data reading and writing. The judging unit determines whether the disc exhibits vertical deviation based on a comparison result of the number of the one or more S curves with a first preset value.

Abstract translation: 光盘驱动器包括盘保持器，拾取头，聚焦伺服器，S曲线识别单元，第一计数器，第二计数器，判断单元，盘识别单元和系统控制器。 光盘驱动器可以检测光盘是否呈现垂直偏差。 检测时，光盘驱动器限制数据读取和写入的最大速度。 判断单元基于具有第一预设值的一个或多个S曲线的数量的比较结果来确定盘是否呈现垂直偏差。