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:
Apr. 30, 1991
Filed:
Jun. 30, 1988
Applicant:
Inventors:
Richard Olsen, Littleton, MA (US);
William Gross, Northborough, MA (US);
Assignee:
Prime Computer, Inc., Natick, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358181 ; 358183 ;
Abstract
A video mixing system that is adapted to receive respective video and graphic control signals for controlling the display content on a video monitor. A video decoder processes the video and graphic control signals, thus making it possible to mix two or more video sources, one of which is typically an in-house data terminal source and the other of which is typically connected as a graphics option. At the output of the decoder is a gate means for providing selective voltage stepped intensity control signals for controlling the video monitor.