Apparatus and method for storing and transmitting images represented by logic signals
CA 1323685 C · Owner: Digital Equipment Corporation · Inventors: Sigel, Claude A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In order to represent a color image with a reduced quantity of information, during the transformations from color parameter pixel information to luminance/chrominance information the, first of the three luminance/chrominance parameters (i.e. the luminance) is determined for each pixel point. The two remaining luminance/chrominance parameters are determined for a predetermined pixel subarray. The luminance/chrominance subarray parameters are determined by calculating the remaining luminance/chrominance parameters for the pixel array. The remaining luminance/chrominance parameters are then determined for each pixel subarray location by calculating a weighted average of the parameters for the …
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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
- Granted October 26, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 26, 2010.
- 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.