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. 11, 1990
Filed:
Sep. 21, 1989
Applicant:
Inventors:
Assignee:
Pioneer Electronic Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369215 ; 369 32 ; 369219 ; 369244 ;
Abstract
A slider-position detector for a disk player having a slider carrying a pickup and capable of moving in radial direction of a disk. The slider-position detector comprises an up-down counter which indicates a count variable according to the direction and moved distance of the slider, and controller which provides the count counted by the up-down counter as position data. The controller sets the up-down counter to a predetermined value when the counting rate of the up-down counter lowers below a predetermined rate while the slider moves in the predetermined direction. The slider-position detector is capable of surely detecting the position of the slider.