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. 01, 2005
Filed:
Mar. 27, 2001
Byung-in MA, Suwon, KR;
Chong-sam Chung, Suwon, KR;
In-sik Park, Suwon, KR;
Byoung-ho Choi, Suwon, KR;
Tae-yong Doh, Suwon, KR;
Byung-in Ma, Suwon, KR;
Chong-sam Chung, Suwon, KR;
In-sik Park, Suwon, KR;
Byoung-ho Choi, Suwon, KR;
Tae-yong Doh, Suwon, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
An apparatus generating a seek direction detecting signal includes a light dividing unit dividing an incident light beam into at least two beams having a main beam and a sub-beam so that at least two beam spots including a main beam spot and at least one sub-beam spot having an optical aberration, can be focused in the track direction of an optical disk, the light dividing unit providing that the direction of the optical aberration of the sub-beam spot can be the tangential direction of the optical disk, an optical detector unit, a first signal processing portion processing a track error signal from signals output from the optical detector, a second signal processing portion processing a track cross signal from the signals output from the optical detector, and a generator generating the seek direction detecting signal from the phase difference between the track cross signal and the track error signal.