Display segment fault detection apparatus
CA 1331058 C · Owner: Goossen, Emray R. · Inventors: Goossen, Emray R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Fault detection apparatus for segmented digital displays of a capacitive nature. Current probes interposed between the segment drivers and the segments detect the current pulses required by the on and off segments resulting from the square wave energization applied thereto. Discrepancies between the current pulses and the commanded data provide segment fault status. A serial bus transmits the display data from a Control Unit to the display and transmits the Segment Status Data from the display to the Control Unit. The current pulses are sampled pursuant to a pulse mode or square wave mode of operation.
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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 July 26, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 26, 2011.
- 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.