Method an apparatus for optimizing selected raster operations
CA 1306064 C · Owner: Webber, Thomas · Inventors: Webber, Thomas; Priem, Curtis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Circuitry for performing high speed operations on certain Boolean raster operations in a workstation whose functions include the display of graphics images using multiple planes and having foreground and background colors. The invented circuitry includes a logic circuit for determining whether a particular Boolean raster operation is one for which the high speed operation is available. A Boolean raster operation is determined to be available for high speed operation if the outcome of the operation can be determined by reading only one operand namely, the source data. If the other operand namely the destination, data, is needed to determine the outcome if the operation then, the operation is …
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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 August 4, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 4, 2009.
- 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.