Video panning system for widescreen television
CA 2027336 A1 · Owner: General Electric Company · Inventors: Isnardi, Michael Anthony
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
RCA 85,762, Abstract of the Disclosure A widescreen television system compatible with a lesser aspect ratio standard television system employs a panning operation using a circular-shift method to keep a 4x3 aspect ratio panning window (area of primary interest) centered for display purposes. Illustratively, when the panning window is shifted left by a given amount at the widescreen signal source a, corresponding portion of right sidepanel image information is "cut" and "pasted" alongside left sidepanel image information so that the panning window remains substantially centered with respect to side panel information. A reverse cut-and-paste operation is performed at a widescreen receiver to …
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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 October 11, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 11, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 11, 2012.
- 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.