High definition television arrangement with signal selections adapted to the available transmission capacity
CA 2037756 A1 · Owner: Westerink, Peter H. · Inventors: Petajan, Eric D.; Safranek, Robert J.; Knauer, Scott C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, A high definition television system that is characterized by low transmission bandwidth is achieved by removing redundancies in the signal encoding the remaining signals, and transmitting the encoded signal in a manner that is most compatible with the applicable standards. In the encoding groups of signals, to be sent are mapped to codebook vectors and the identities of the codebook vectors are sent together with those signals of the groups of signals that correspond to the codebook vectors. To insure that the total number of signals that are sent does not exceed the available capacity, the signals are sorted by a selected importance parameter and assigned for transmission in …
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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 March 7, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 7, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 7, 2013.
- 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.