Apparatus for demodulating sampled data chroma signals
CA 1213363 A · Owner: Rca Corporation · Inventors: Lewis, Henry G. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
19-, Abstract of the Disclosure, Apparatus is provided for demodulating sampled data chrominance signals. The chrominance samples occur in sequences of interleaved first and second color mixture signals of the form +A, +B, -A, -B. The + and - signs associated with like letters indicate a difference in sampling phase of 180 degrees relative to the color burst reference. Samples separated by exactly one horizontal line are sampled on opposite phases. Means are provided for selectively demultiplexing samples of a first color mixture signal component sampled at a prescribed sampling phase from every other horizontal line of the chrominance signal, and demultiplexing and inverting the polarity …
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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 October 28, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 28, 2003.
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Timeline
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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.