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:
Nov. 28, 1989
Filed:
Dec. 29, 1987
Applicant:
Inventors:
Michael A Isnardi, Plainsboro, NJ (US);
Robert N Hurst, Jr, Hopewell, NJ (US);
Assignee:
General Electric Company, Princeton, NJ (US);
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358 12 ; 358141 ; 358142 ;
Abstract
An NTSC compatible, single channel widescreen EDTV system encodes and decodes a television signal comprising (1) a main, standard format NTSC signal with auxiliary low frequency side panel image information compressed into an overscan region thereof; (2) auxiliary high frequency side panel image information; and (3) auxiliary high frequency horizontal luminance information. At an encoder, components 2 and 3 are intraframe averaged before modulating an alternate subcarrier. Component 1 is intraframe averaged above a given frequency before being combined with the modulated alternate subcarrier.