Patent · US Active

Apparatus and method for detecting defect of optical disc

US7983128B2 · kind B2 · utility

0Cited by

4References

8Claims

0Family size

Assignee

SUNPLUS TECHNOLOGY CO., LTD. · TW

Inventors

Ching-Chuan Chen · Taipei, TW
Yi-Chun Lin · Tainan, TW

Key dates

Filing date	May 7, 2008
Grant date	Jul 19, 2011
Priority date	—
Expiry date	Oct 11, 2029

Classification

Technology area (CPC G)Physics
CPC primaryG11B20/18
WIPO fieldMeasurement
WIPO sectorInstruments

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.