System for generating multiple aspect ratio video signals from motion picture disk recorded in single aspect radio
CA 2237075 C · Owner: Ostrover, Lewis S. · Inventors: Lieberfarb, Warren N.; Ostrover, Lewis S.; Cookson, Christopher J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed herein is a player for playing a software carrier containing thereon digital data representative of picture information having a base aspect ratio and for deriving a video signal having one of multiple aspect ratios said software carrier including a code indicative of said base aspect ratio comprising means for representing a selected aspect ratio said representing means normally representing a default aspect ratio; means for allowing a user to select one of said multiple aspect ratios thereby to change the represented aspect ratio from the default to a selected aspect ratio; means for reading and processing digital data read from said software carrier; means for generating from …
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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 13, 1994 and granted May 29, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 13, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 13, 2016.
- 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.