Digital projector automation
CA 2528462 C · Owner: Wall, Bob · Inventors: Paige, Robert; Theiste, Christopher H.; Allen, Steven J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for controlling a digital projector (303) by sensing a condition of a switched power outlet (311) and determining and performing at least one programmed response to the sensed condition. Also a digital projector , interface (309) having a switched outlet interface for receiving a signal indicating a condition a switched power outlet (311) and a processor (403) coupled to the switched outlet interface. Processes implemented by the processor (403) are responsive to the switched outlet condition to perform a preselected function involving a digital projector (303) in response to the switched outlet condition.
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 March 5, 2004 and granted May 7, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 5, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 5, 2026.
- 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.