Method and apparatus for frame accurate access of digital audio-visual information
CA 2197323 C · Owner: Ncube Corporation · Inventors: Porter, Mark A.; Pawson, Dave
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for use in a digital video delivery system is provided. A digital representation of an audio-visual work such as an MPEG , file, is, parsed to produce a tag file. The tag file includes information about each of the, frames in the audio-visual work. During the performance of the audio-visual work, data from the digital representation is sent from a video pump to a decoder. Seek, operations are performed by causing the video pump to stop transmitting data from, the current position in the digital representation and to start transmitting , data from a new position in the digital representation. The information in the tag file is inspected to determine the new …
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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 July 12, 1996 and granted October 30, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 12, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 12, 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.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.