Signal processing system for large screen display apparatus
CA 1298607 C · Owner: Tanaka, Toshiji · Inventors: Hara, Zenichirou; Tanaka, Toshiji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A large screen display apparatus comprising a display unit composed of a plurality of modules and a housing accommodating the display unit. Each of the modules includes a plurality of units arranged in a matrix form, a power source and a control unit. Further each of, the units includes a plurality of light emitting elements arranged in a matrix form and a drive circuit for the light emitting elements. Due to this arrangement it is, possible to provide a large screen display apparatus being economical, small in weight and valume and high in usability.
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
- Granted April 7, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 7, 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.