Data processing apparatus with display device
CA 2034295 C · Owner: Canon Kabushiki Kaisha · Inventors: Inoue, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
On a data processing apparatus comprising a host processor including a multitasking unit in a time sharing manner, and a scheduling unit for scheduling drawing requests to a graphics device from the plurality of user processes and forming a single sequence of commands each associated with each of the drawing requests, a scheduling unit monitors the execution status of drawing commands at the graphics device processor, and reserves the scheduling of the drawing request from the user process until the execution status advances to a predetermined stage.
Read the whole patent
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 January 16, 1991 and granted August 18, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 16, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 16, 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
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.