Video crispener
CA 1055575 A · Owner: Faroudja, Yves C. · Inventors: Faroudja, Yves C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system of shortening transition time of transitions occurring in video signals is disclosed which includes circuitry for multiplying a function of the full wave rectified first differential of the input video signal by a function of the second differential of the input video signal and then adding the waveform resulting from such a product to the properly delayed input signal to provide a crispened output video signal. The system may be provided to crispen the luminance and chroma signals of a color television video signal. A system for shortening transitions of low bandwidth chroma information with higher bandwidth luminance information is also disclosed.
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 May 29, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 29, 1996.
- 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.