Down conversion system using a pre-decimation filter
CA 2281391 A1 · Owner: Kim, Hee-Yong · Inventors: Kim, Hee-Yong
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An HDTV down conversion system including an apparatus for forming a low resolution video signal from an encoded video signal representing a video image. The encoded video signal is a frequency-domain transformed high resolution video, signal with motion vectors. The apparatus includes a receiver for receiving the, encoded video signal as a plurality of blocks of high resolution frequencydomain, video coefficient values. A plurality of blocks comprises a macroblock. A down-conversion filter weights selected ones of the high resolution frequencydomain video, coefficient values within each block to generate corresponding blocks of filtered, frequency-domain video coefficients. An …
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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
- Filed September 7, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 7, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 7, 2021.
- 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.