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:
Jan. 20, 1976
Filed:
Nov. 12, 1974
Applicant:
Inventor:
Richard Claxton Palmer, Blawenburg, NJ (US);
Assignee:
RCA Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ; H04N / ;
U.S. Cl.
CPC ...
358-4 ; 178 / ;
Abstract
Frequency modulated sound carrier waves and frequency modulated picture carrier waves are combined in an adder, and the sum is clipped to develop a recording signal input for an electron beam disc recorder. To reduce possible sound carrier interference in pictures reproduced from signals recovered during disc playback, sound carrier waves, in quadrature phase relation to those applied to the adder, are combined with composite video signals to form the modulating signal input to the picture carrier frequency modulator.