Method and apparatus for making corrections in a video monitor during horizontal scan
CA 2191609 C · Owner: Display Laboratories, Inc. · Inventors: Lassman, Steven J.; Simpson, Ron C.; Webb, James R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A circuit within a video monitor (8) for making corrections during horizontal scan includes a data storage device (42) containing information relating to a selected display parameter, an integrator (46) receptive of the stored information and adapted to produce an integrated signal therefrom and an , amplifier receptive of the integrated signal for supplying signals to the video monitor (8) based on the integrated signal. The information supplied from the data storage device (42) to the integrator is encoded in a pulse density modulated wave form via a tri-state gate and a one-shot timer. The information stored in the data storage device is stored in bytes each byte , containing a …
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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
- Filed June 13, 1995 and granted February 20, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 13, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 13, 2017.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.