Adaptive leak hdtv encoder
CA 2100475 C · Owner: Netravali, Arun Narayan · Inventors: Netravali, Arun Narayan; Matthews, Kim Nigel; Knauer, Scott Carroll
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved predictive encoder where the leak signal is a function of the buffer fullness of the encoder. More specifically the signals stored in theencoder output buffer are further encoded based on the fullness of the buffer and, information about this further encoding is used in determining the leak factor level. In accordance with another improvement this leak factor level is not constrained to granularity that is imposed by the decoder hardware. Removal of the constraints is accomplished by cycling through a sequence of permissible leak levels that averages at the desired level.
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
- Filed July 14, 1993 and granted September 1, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 14, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 14, 2015.
- 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.