Detection, correction and display of digital video information
CA 2108428 A1 · Owner: Mcgee, Daniel R. · Inventors: Klein, Matthew H.; Mcgee, Daniel R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention legalizes a video signal (e.g. 4:2:2 format) being processed in one format so that the video signal can be transformed to other formats (e.g. analog composite NTSC format). An editor can be notified of color legalities in a video signal. Further, each pixel of a video signal can be corrected to the nearest legal value by applying soft limits and gain slopes to a constant luminance color correction process (218) . In accordance with the present invention, illegal colors of a video signal can be highlighted (238) to provide an output drive (244) for a video display which can be easily monitored by an editor. Alternate features of the present invention relate to error …
Read the whole patent
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 14, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 14, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 14, 2015.
- 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.