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. 20, 1993
Filed:
Jul. 12, 1991
Applicant:
Inventor:
James J Gibson, Princeton, NJ (US);
Assignee:
General Electric Company, Princeton, NJ (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ; H04N / ; H04N / ;
U.S. Cl.
CPC ...
358 12 ; 358 36 ;
Abstract
In one embodiment an encoded compatible widescreen television signal includes first and second auxiliary carriers amplitude modulated with side panel chrominance information. The first and second auxiliary carriers exhibit a significant phase shift (e.g., 90.degree.) relative to a chrominance subcarrier modulated with main panel information, and exhibit phase reversal from field to field. In another embodiment, a phase shifted, amplitude modulated and field phase modulated auxiliary carrier is derived from a modulated chrominance subcarrier.