Method for transmitting data on viewable portion of a video signal
CA 2379688 A1 · Owner: Kosbar, Kurt Louis · Inventors: Chupp, Christopher Eric; Ciardullo, Daniel Andrew; Kosbar, Kurt Louis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of encoding data (21) in the visible portion of a transmitted video signal (11) without degrading display of the received video signal and for , decoding (11) the data in the received video signal (13). Each group of data bits to be transmitted, referred to a data symbol (21) is associated with one , of a number of longer predetermined sequences of chips (23). Each chip sequence is divided into a multiplicity of lines of chips (23) and each line , of chips together with its inverse are embedded in pairwise fashion, in , respective pairs of line operated upon to detect the lines of chips they represent, and each of the number of chip sequences is correlated with the detected …
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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, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 14, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 14, 2021.
- 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.