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. 20, 2004
Filed:
Jul. 11, 2001
Yusuke Kumagami, Iwaki, JP;
Hiromichi Yamamoto, Iwaki, JP;
Alpine Electronics, Inc., Tokyo, JP;
Abstract
A disc playback apparatus incorporating a memory that stores data concerning errors or differences between commanded number of tracks to be traversed and the number of tracks actually traversed by an optical pickup actuated by a servo controller. The apparatus further includes a traversed track number computing unit computes the number of tracks to be traversed by the optical pickup when the optical pickup is moved to a track that corresponds to the address where the data to be read is stored and a correction processing unit performs a predetermined correction processing on the computed number of tracks to be traversed, taking into consideration the error data stored in the memory.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile