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:
Jan. 11, 2005
Filed:
Aug. 17, 2001
Chin-shiong Tsai, Tainan Hsien, TW;
Chien-da Chen, Tainan Hsien, TW;
Meng-chang Lin, Kaohsiung Hsien, TW;
Chin-Shiong Tsai, Tainan Hsien, TW;
Chien-Da Chen, Tainan Hsien, TW;
Meng-Chang Lin, Kaohsiung Hsien, TW;
Discovision Associates, Irvine, CA (US);
Abstract
The present invention provides a method for guiding a pick-up head to follow an information track. The method comprises the steps of sensing and sending notification of displacement between the pick-up head and the center of the information track, generating a first correction directly proportional to the displacement, generating from the first correction a second correction non-proportional to the displacement, generating a third correction from an amplified tracking error signal and generating a driving force proportional to the sum of the second and third corrections, driving the pick-up head to follow the information track.