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. 08, 1983
Filed:
Dec. 04, 1981
Applicant:
Inventor:
Harry W Verlinden, Waterloo, CA;
Assignee:
Electrohome Limited, Kitchener, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358184 ; 358165 ; 358220 ;
Abstract
A video amplifier is provided whose mode of operation varies depending on the level of the video signal from a condition where maximum positive voltage is applied to the cathode of the cathode ray tube (CRT) to ensure blanking, through operation as a differential amplifier, and finally to operation as a common emitter amplifier over the full brightness level range of the display on the CRT screen.