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. 12, 2004
Filed:
Feb. 25, 2000
Applicant:
Inventor:
Takahiro Komazaki, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 1/722 ;
U.S. Cl.
CPC ...
G11B 1/722 ;
Abstract
Apparatus for providing fine search in a sled movement mechanism employing a stepping motor by controlling the speed with which the head jumps in succession to next neighboring tracts on a disc and by causing pickup movement accurately for a distance corresponding to the distance of movement of the objective lens to realize the fine search in the sled movement mechanism employing the stepping motor. Also, the distance of head movement in the radial direction of the disc can be prescribed and, upon interruption of the head jumping operation, the head can be subsequently transported a distance corresponding to the target number of track jumps.