Force feedback interface with selective disturbance filter
CA 2286582 A1 · Owner: Chang, Dean C. · Inventors: Chang, Dean C.; Rosenberg, Louis B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A force feedback interface and method providing a selective disturbance filter for providing selective reduction or elimination of displayed disturbances associated with output force sensations. A force feedback interface device (14) is connected to a host computer (12) that displays a graphical environment. The interface device (14) includes a user manipulatable object (34), sensors (28) for detecting movement of the user object (34) and , actuators (30) to apply output forces to the user object (34). A microprocessor (26) outputs controlling force signals to the actuators (30) receives signals from the sensors (28) and reports locative data to the host computer (12) indicative of …
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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 April 13, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 13, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 13, 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
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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.