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:
Nov. 22, 2005
Filed:
May. 16, 2003
Applicants:
Sang-yeal Park, Gyeonggi-do, KR;
Chang-jin Yang, Gyeonggi-do, KR;
Inventors:
Sang-yeal Park, Gyeonggi-do, KR;
Chang-jin Yang, Gyeonggi-do, KR;
Assignee:
Samsung Electronics Co., Ltd., Suwon-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B021/08 ;
U.S. Cl.
CPC ...
Abstract
A circuit and a method of detecting a mirror signal for an optical disc apparatus, the method includes detecting a bottom envelope from a radio frequency signal and providing a bottom envelope signal thereof, amplifying the bottom envelope signal according to a center level of the bottom envelope signal, and comparing the amplified bottom envelope signal with a predetermined comparison voltage to detect the mirror signal.