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:
Jul. 24, 1979
Filed:
Apr. 13, 1978
Applicant:
Inventors:
Assignee:
RCA Corporation, New York, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
358128 ; 1791 / ; 1791 / ; 274 / ; 360 36 ; 360 70 ; 360 75 ;
Abstract
A pickup cartridge for use in a velocity correction system includes a polymer bimorph element mechanically interposed between a cartridge housing and a pickup arm carrying a groove-riding stylus. Signals representative of cyclical deviations in the stylus/record relative velocity are applied to the polymer bimorph element to cause displacement of the groove-riding stylus in a manner that opposes cyclical deviations.