Circuit for separating chroma and luminance information in a composite video signal
CA 1093205 A · Owner: The Magnavox Company · Inventors: Miller, William G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to the television art. Specifically apparatus for separating luminance and chroma information in a color video signal using comb filtering techniques is provided. The apparatus includes a delay line which receives the composite video signal and delays it for one horizontal line. The delayed video signal is combined with an undelayed video signal to provide the separated chroma and luminance signals. The bandwidth of the individual comb teeth in the comb filter can be altered in accordance with the signal to noise ratio of the received video signal. Picture quality is enhanced by increasing frequency content while decreasing noise in the recovered chroma signals. …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted January 6, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 6, 1998.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.