Active video surveillance system and active video surveillance method therefore
CA 2434700 A1 · Owner: Chang, Chao-Hung · Inventors: Chang, Chao-Hung
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An active video surveillance system and active video surveillance method therefore of the present invention mainly is provided to continuously taking the wide-angle image signals within a surveillance area by an image-taking device, and a,processing device is employed for continuously comparing the latest and the second latest wide-angle image signals. Then a moving, target is identified when a difference occur there between and the image-taking device or a second image-taking device is immediately driven to take the enlarged image signals of the moving target and the, said wide-angle image signals and the said enlarged image signals are recorded into a recording unit. By using the …
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 July 7, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 7, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 7, 2025.
- 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.