Progressive scan video signal processor
CA 1311835 C · Owner: Dischert, Robert Adams · Inventors: Topper, Robert Joseph; Dischert, Robert Adams; Shyu, William Ming-Jen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
RCA 82,215, ABSTRACT, PROGRESSIVE SCAN VIDEO SIGNAL PROCESSOR A speed-up circuit time compresses and interlaces field delayed (Yd) and interpolated (Yi) lines of a video input signal (Y1) for display in progressive scan fashion. The interpolated lines (Yi) are produced by adding low and high frequency components derived from the video input signal. The low frequency component (s5) is produced by frame-combing (in 62) and low pass filtering the input signal. The high frequency component is obtained by field delaying (in 56), line comb filtering (in 66) and high pass filtering the input signal. The combined low and high frequency components are spatially and temporally coincident thereby …
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 December 22, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 22, 2009.
- 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.