Inclusion of audio signal within video signal, at band edges
CA 2183692 C · Owner: Johnson, Byron Lynn · Inventors: Hobbs, Gary Lamont, Sr.; Johnson, Byron Lynn
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system wherein audio samples are added to a video signal but within, the time-frame allocated to video information thereby displacing video data. Two, audio samples are preferably placed in each video line: at the beginning and at the, end. When the video lines are "stacked" to form a video image the audio forms, noisy vertical stripes at the sides of the image each of which is about 6 percent of, the width of the image. The invention stretches the video image to cover the stripes.
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 August 20, 1996 and granted September 19, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 20, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 20, 2018.
- 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.