Image enchancement apparatus using variable integration time per pixel
CA 2095267 A1 · Owner: Tuli, Raja Singh · Inventors: Tuli, Raja Singh
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus which adjusts the sensitivity capability of a sensor pixel when the light input goes beyond its normal dynamic light range. The apparatus may use an adjustable strobe width and/or other methods to desensitize or sensitize the pixel when the signal is too high or too low respectively. The apparatus may also use a method by which incident light on the image is made to change instead of the strobe width. This invention also allows any non-linear output from any type scanner to be linearized. It allows subtle shades of grey not normally viewed due to the "washing out" effects of very wide dynamic and intense input signals to be displayed with, greater clarity.
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 April 18, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 18, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 18, 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.