Method and system for digitizing handwriting
CA 2293411 A1 · Owner: Inmotion Technologies Ltd. · Inventors: Baron, Ehud; Genossar, Omry; Korsensky, Victor
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system and method for tracking a moving object very accurately at short ranges in general, and a handwriting input device such as a pen (106) in particular. The method is based on measuring times of arrival of ultrashort RF pulses transmitted (201) by the pen to an array of receivers (100-103). Dealing with the ultrashort events is done by "strobing" the pen position. To achieve the necessary resolution, on the order of 0.25 mm the times of , arrival of the pulses are determined by sampling the pulses digitally and fitting appropriate mathematical function to the sampled pulses. The time jitter is averaged over many sweeps, and a dedicated receiver is used for synchronization.
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 June 25, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 25, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 25, 2020.
- 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.