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:
Apr. 25, 2006
Filed:
Jan. 07, 2003
Byung-in MA, Gyeonggi-do, KR;
Young-man Ahn, Gyeonggi-do, KR;
In-sik Park, Gyeonggi-do, KR;
Kwan-joon Kim, Gyeonggi-do, KR;
Byoung-ho Choi, Gyeonggi-do, KR;
Byung-in Ma, Gyeonggi-do, KR;
Young-man Ahn, Gyeonggi-do, KR;
In-sik Park, Gyeonggi-do, KR;
Kwan-joon Kim, Gyeonggi-do, KR;
Byoung-ho Choi, Gyeonggi-do, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
An apparatus for and a method of producing a push-pull tracking error signal in an optical disc system having four light-receiving sections A, B, C, and D arranged in a radial direction of the optical disc. Pairs of signals P, P, Pand P, corresponding to light receiving sections A, B, C and D, respectively are differentially combined to provide differential signals. One differential signal is filtered, amplified and differentially combined with another differential signal to output a tracking error signal. Accordingly, distortion of the tracking error signal during jumping to a desired track and distortion of the tracking error signal due to a defect of the optical disc are prevented.