Method and apparatus for monitoring an analog meter
CA 2330947 A1 · Owner: Chiu, Ming-Yee · Inventors: Chiu, Ming-Yee
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and an apparatus for remote monitoring of analog meters employ a Hough Transform on the edge points of the meter scale to obtain the centre of the scale (8 9, 10). The, graduation marks and the needle are detected from the intensity profile along various radii (11, 12 13). Thereby the, meter reading can be flexibly adopted to different meter scales during an easy training process. The method can be modified for oblique reading of the scale.
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 January 15, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 15, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 15, 2023.
- 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.