Virtual positioning media control system
CA 2294960 A1 · Owner: Acoustic Positioning Research Inc. · Inventors: Bauer, Will N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A control system for variably operable devices such as spotlight systems (16) , to follow the movements of a performer (12) over an area derives control data , from a tracking head (14) which follows the movements of the performer (12). The tracking head (14) may be operated manually to follow the performer. A frame of reference (10) is set up over the area (10A) the frame of reference , including at least four calibration points (1 2, 3, 4), any three of which , are not collinear. The frame of reference (10) also includes a reference point of origin (C). From the X, Y, and Z coordinates of the tracking head with respect to the calibration points and from the pan and tilt angles of the …
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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 July 14, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 14, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 14, 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.