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. 27, 1976
Filed:
Jun. 30, 1975
Applicant:
Inventors:
Melville Lynwood Heiges, Jr, Rockville, MD (US);
Leonard Golding, Rockville, MD (US);
Bela Banyasz, Kensington, MD (US);
Assignee:
Communications Satellite Corporation (Comsat), Washington, DC (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358 10 ;
Abstract
A method of testing both digital and analog color television systems is disclosed. The method includes the generation of a unique test signal enables the measurement of differential-phase and differential-gain at continuously variable average pictures levels (APL) anywhere between ten per cent and ninety per cent. Because of the particular test signal employed, the method of testing color television systems may be used with either full-frame or single-line (including vertical interval testing) format.