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:
Aug. 26, 1997
Filed:
Nov. 01, 1995
Applicant:
Inventors:
Norikazu Kunikata, Musashino, JP;
Tatsuya Murata, Tokorozawa, JP;
Assignee:
TEAC Corporation, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369 4428 ; 369 32 ;
Abstract
An optical disk drive is provided with a microcomputer for calculating the number of tracks on an optical disk traversed by an optical pickup in a seek operation and the number of steps to be taken in the seek operation. The number of steps determined in accordance with a signal output by a rotation detector of a feed motor is incremented or decremented depending on a direction in which the optical pickup is translated, and is preset in a counter. In each step of a seek operation, the optical pickup is driven by the feed motor in accordance with the count of the counter.