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:
Dec. 05, 2000
Filed:
Apr. 06, 1998
Chih-Hsien Kao, Pan-Chiao, TW;
Sheng-Yunn Wang, Tai-Ping, TW;
Media Tek Inc., Hsinchu, TW;
Abstract
An auto gain adjustment apparatus and method are provided for the focusing/tracking control of the optical pickup of an optical disc drive. The gain is obtained by utilizing the self-sustained oscillation from a non-linear component in the optical disc drive, such as a relay circuit with hysteresis. This gain adjustment apparatus and method is more advantageous than the prior art in that the gain can be automatically adjusted without involving manual work and the need to apply an externally generated oscillating test signal. The apparatus and method therefore allows the manufacture and utilization of the optical disc drive to be more efficient and cost-effective.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile