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:
Mar. 16, 1982
Filed:
Sep. 19, 1980
Applicant:
Inventor:
James C Rustman, Indianapolis, IN (US);
Assignee:
RCA Corporation, New York, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ; G11B / ;
U.S. Cl.
CPC ...
369126 ; 369129 ; 369151 ; 369 71 ; 369 55 ;
Abstract
The invention describes a method and apparatus for reconditioning a video disc signal pickup stylus electrode to prevent electrode-disc electrical shorts. An AC or DC potential is repetitively applied during a predetermined period between the stylus electrode and the disc to produce electrical breakdown at the electrode-disc interface and vaporize a portion of the electrode material. In the capacitive type video disc system, the capacitance sensing pickup circuitry is repetitively tuned to couple excessive amounts of rf potential to the stylus electrode.