Noise eliminating circuit
CA 1213973 A · Owner: Sony Corporation · Inventors: Kanemoto, Yoshitaka
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A chroma signal is supplied to a comb-filter for eliminating noise component in the chroma signal. The output signal of the comb-filter and the input chroma signal are both supplied to a correlation circuit. The correlation circuit outputs the same signal as the output of the comb-filter when the input chroma signal and 1H delayed chroma signal have line correlation between each other. The correlation circuit further outputs the same signal as the input chroma signal at the front end portion of the chroma signal and outputs nothing at the back end portion though, the comb-filter output trails 1H delay signal at the back end portion thereof.
Read the whole patent
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 November 12, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 12, 2003.
- 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.