The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 29, 2007
Filed:
Nov. 05, 2003
Bong-hwoan Choi, Gyeonggi-do, KR;
Bong-hwoan Choi, Gyeonggi-do, KR;
Samsung Electronics Co., Ltd., Suwon-Si, KR;
Abstract
An apparatus and method for detecting a tilted disc, and an apparatus and method for reproducing data from the tilted disc are provided. The method for detecting a tilted disc comprises: radiating light on a predetermined location at the inner circumference of an optical disc and moving a pickup away from the optical disc; measuring a time Tat which a focus error signal, generated when light is reflected from a recording layer of the optical disc, is output; radiating light on a predetermined location at the outer circumference of the optical disc and moving the pickup unit away from the optical disc; measuring a time Twhen a focus error signal, generated when light is reflected from the recording layer of the optical disc, is output; determining a tilt degree indicating value T which is a value for determining whether the optical disc is a tilted disc, using the measured times Tand T; and comparing the tilt degree indicating value T with a predetermined reference value R and determining whether the optical disc is a tilted disc.