Digitally encoded alpha-numeric projector slide and systems for using the same
CA 1306298 C · Owner: Truc, James A. · Inventors: Hoonsbeen, Gary A.; Truc, James A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention includes an, information projector slide comprising a planar member having a central window for holding a photographic film image and at least one border adjacent the window. A magnetic medium for storing selected digitally encoded alpha-numeric information is affixed to the border. A read/write system for reading information from and writing information to the projector slide includes a read head a write, head, a controller, a keyboard and a display monitor. An optical projection system and a video projection system are provided for concurrently displaying an image from a photographic slide and encoded information from the magnetic media. A cropping system is also …
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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 11, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 11, 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.