Audiovisual encoding system with a reduced number of audio encoders
CA 2201369 C · Owner: Thagard, Greg · Inventors: Lehmann, David; Yogeshwar, Jay; Ichikawa, Teiichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An audiovisual encoding system using a multipass video encoder (50) and a plurality of one-pass audio encoders (70a 70b, 70c and 70d). The number of , audio encoders used by the system is equal to the number of audio tracks to be encoded divided by the number of passes required for the video encoding rounded up to the nearest integer, if necessary. The system allows the video encoder (50) and audio encoders (70a, 70b 70c and 70d) to be used at the same , time so that the encoding of the video is completed at the same time as the encoding of all audio tracks is completed using the minimum number of audio , encoders (70a 70b, 70c and 70d).
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 April 19, 1996 and granted February 25, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 19, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 19, 2018.
- 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
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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.