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. 14, 1980
Filed:
Jan. 26, 1978
Applicant:
Inventor:
Leland B Smith, Englewood, CO (US);
Assignee:
Unirad Corporation, Englewood, CO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ; H04N / ; A61B / ;
U.S. Cl.
CPC ...
358112 ; 358166 ; 358242 ; 128660 ;
Abstract
An electronic circuit is used to interrupt the video signal going to a T.V. monitor about 500 times per scan line. Each interruption causes a black spot in the display. The black lines between scan lines on the T.V. screen cooperate with the black spots in each scan line to form electronically a black matrix background for the T.V. picture. The black matrix enhances the picture quality making a sharper, clearer picture.