Merging RGB with Video signal


A circuit which receives RGB and composite video and provides both RGB and composite merged outputs. Merging of RGB signals occur where the input composite signal is converted to RGB; and also, merging occurs of composite signals where the input RGB is converted to a composite signal. The circuit is particularly useful in a video overlay application. Notch filters are used both in the video path and keying path. The notch filters are centered at frequencies equal to the dot clock frequency of the RGB divided by integers where the result of this division falls within the chroma subcarrier spectrum.

Inventors: Paul E. GreavesMichael R. MooreStephen G. PerlmanLaurence A. Thompson
Original Assignee: Apple Computer, Inc.
Primary Examiner: Wendy R. Greening
Current U.S. Classification: 348/599345/592345/629348/594348/E09.039
International Classification: H04N 974; H04N 5262; H04N 5272; G09G 114

Author: Gilbert Tan TS

IT expert with more than 20 years experience in Multiple OS, Security, Data & Internet , Interests include AI and Big Data, Internet and multimedia. An experienced Real Estate agent, Insurance agent, and a Futures trader. I am capable of finding any answers in the world you want as long as there are reports available online for me to do my own research to bring you closest to all the unsolved mysteries in this world, because I can find all the paths to the Truth, and what the Future holds. All I need is to observe, test and probe to research on anything I want, what you need to do will take months to achieve, all I need is a few hours.​

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