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. 08, 1996
Filed:
May. 27, 1994
Applicant:
Inventors:
Mitumasa Kubo, Tokyo, JP;
Kiyoshi Shidara, Saitama-ken, JP;
Assignee:
Teac Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369 50 ; 369 48 ; 369 58 ;
Abstract
An optical disk drive for recording information on or retrieving information from an optical disk having a plurality of zones including a different number of sectors includes a zone identifying unit for identifying a current zone in which the optical head is located, and a synchronizing signal generation unit for generating a synchronizing signal of a frequency corresponding to the current zone, wherein the synchronizing signal is used for reading a retrieved signal from the optical disk.