Display system
CA 1294380 C · Owner: International Business Machines Corporation · Inventors: Bowater, Ronald John; Butler, Nicholas David; Norris, Paul William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a display system comprising a display buffer 36 data indicative of picture elements with a facility for moving an image from a source to a destination position by manipulating the data in the display buffer. The present invention provides this facility by having means for reading processing and Storing bursts, of display buffer words. In the described embodiment of the invention control logic 44 first causes a burst of display buffer words containing bytes representative of the image in its source position to be read out from the display buffer. These words are passed through a barrel shifter 66, where the word is rotated as necessary and stored in …
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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 January 14, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 14, 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.