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. 30, 1984
Filed:
Oct. 28, 1981
Applicant:
Inventor:
Richard L Wilkinson, El Toro, CA (US);
Assignee:
Discovision Associates, Costa Mesa, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358310 ; 358330 ; 358343 ;
Abstract
A method for recording video and audio information onto a recording medium which involves recording a carrier frequency signal, frequency modulated with composite color video information, and a subcarrier frequency signal, modulated with audio frequency information onto the recording medium and selecting the frequencies of the carrier and subcarrier signals such that the subcarrier frequency is lower than the second lower chroma sideband of the modulated carrier signal.