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:
Oct. 10, 2006
Filed:
Mar. 23, 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 to generate a seek direction detecting signal for an optical pickup to determine a position of a center of an optical spot focused on an optical disk relative to a center of a track, which focuses a main beam on a first optical detector and a sub-beam having a predetermined aberration in a radial direction on a second optical detector using a light dividing unit. The second optical detector has an inner and an outer pair of light receiving portions arranged along the radial direction, the inner pair being between the outer pair. A signal processing portion includes a first signal processing portion to detect a track error signal from signals output from the first optical detector, and a second signal processing portion to generate the seek direction detecting signal from signals detected by the second optical detector and the track error signal.