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:
Sep. 14, 2004
Filed:
Sep. 25, 2001
Applicant:
Inventors:
Assignee:
Samsung Electronics Co., Ltd., Suwon, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 7/00 ;
U.S. Cl.
CPC ...
G11B 7/00 ;
Abstract
A selective disturbance compensating apparatus for use in reproduction from an optical recording medium, and a 3T-correcting method. A DC offset canceller extracts a DC offset from a reproduction signal to cancel the DC offset. An equalizer equalizes the offset-cancelled signal. A switching unit selects between the offset-canceled signal and the equalized signal according to whether distortion caused by asymmetry of the signal is above or below a predetermined reference level. A 3-T correcting unit corrects asymmetry of the selected signal. In another embodiment, a second switching unit selects between the 3-T corrected signal and a Viterbi corrected signal.