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:
Aug. 01, 1989
Filed:
Feb. 19, 1988
John Abt, Nevada City, CA (US);
Ronnie D Barnett, Nevada City, CA (US);
James E Blecksmith, Nevada City, CA (US);
Kevin D Windrem, Grass Valley, CA (US);
Neil R Olmstead, Nevada City, CA (US);
Richard A Jackson, Nevada City, CA (US);
Peter D Symes, Grass Valley, CA (US);
Richard S Bannister, Grass Valley, CA (US);
Thomas A Grancey, Grass Valley, CA (US);
Richard A Frasier, Grass Valley, CA (US);
The Grass Valley Group, Inc., Grass Valley, CA (US);
Abstract
A video switcher comprises a source selector having a plurality of input terminals for connection to a plurality of video sources respectively, and at least two output terminals. At least two processing channels each have an input terminal connected to an output terminal of the source selector and also have an output terminal. A video combiner has video input terminals connected to the output terminals of the processing channels and is operative to combine the output signals provided by the processing channels in dependence upon priority signals.