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:
May. 17, 1994
Filed:
Sep. 30, 1992
Richard T Daly, Madison, WI (US);
Robert N Stabler, Madison, WI (US);
Paul C Post, Madison, WI (US);
Randy Wiggins, Madison, WI (US);
Colorgraphics Systems, Inc., Madison, WI (US);
Abstract
Video systems generally include chroma processors. The chroma processor may be configured as a chroma keyer, a key signal generator or a color collector. The chroma processor includes dual input look-up tables which are loaded by a central processor. The dual input look-up tables may be read and written to simultaneously. The look-up tables are addressed by chrominance signals, luminance signals or key signals input into the chroma processor. The look-up tables provide an exceptionally fast apparatus and exceptionally flexible method of keying one or more simultaneous regions of the display based on one or more unique chroma/luma combinations, new key signals, chrominance signals, and luminance signals. The chroma processor receives color modification parameters from a software user interface. Preferably, the chroma processor utilizes Y luminance signals, and U and V chrominance signals.