Selected data compression for digital pictorial information
CA 2403568 A1 · Owner: Van De Ven, Antony · Inventors: Van De Ven, Antony
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention provides a method and apparatus to selectively compress digital image data for the supply of that information to digital display screens or storage. The invention utilizes a digital input containing a non-linear representation between the value and the intended intensity and linearizes this into a higher order number. If the higher order number is below at least a first threshold, it is transmitted or stored on a lower order data system noting that the higher order bits or channels should all be zero. If the higher order value is above the threshold the highest order bits of that , value are transmitted or stored on the lower order data system so that only the lowest …
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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 23, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 23, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 23, 2023.
- 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.