Apparatus and method for using a test window in a graphics subsystem which incorporates hardware to perform clipping of images
CA 1316263 C · Owner: Priem, Curtis · Inventors: Malachowsky, Chris; Priem, Curtis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus and method for using a test window to improve the efficiency of clipping and inter-coordinate images which are to be displayed by a graphic display subsystem. A test window is defined which surrounds a window (the clip window) within which it is desired to render graphical images. Objects are then tested to see if their vertices are outside the test window. The utilization of this test window allows for a performance optimization to be made between processing of a clipped object by a hardware based graphics subsystem which incorporates the present invention or by graphics software executed by a general purpose CPU which also interfaces to the graphics display. By properly …
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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 April 13, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 13, 2010.
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Timeline
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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.