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. 25, 1989
Filed:
May. 29, 1987
Applicant:
Inventor:
Hedley C Davis, Middletown, DE (US);
Assignee:
Commodore Business Machines, Inc., West Chester, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
340731 ; 340723 ; 340745 ; 340802 ;
Abstract
A computer video demultiplexer for combining a plurality of low resolution, video input signals into a plurality of higher horizontal and vertical resolution video output signals. Control signals for the video demultiplexer are coded on non-displayed video scan lines which are uniquely addressable so that several demultiplexers operated from one video signal may control a number of high resolution peripheral devices.