System and method for acquiring an optical target
CA 2113252 C · Owner: United Parcel Service Of America, Inc. · Inventors: Chandler, Donald Gordon; Shah, Govind; Shaw, David Goodwin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An optical target is, acquired by an optical scanning system according to an, in-band target frequency in an input signal from an opti-, cal scanning device. Both the in-band energy level and the, out-of band energy level of the input signal from the opt-, ical scanning device are determined. These two energy, levels are compared and a possible detection of the target is determined according to this comparison. A minimum threshold of in-band energy is required in order for the possible detection to be confirmed. The input signal may have various frequencies due to various amounts of magnification of the acquisition target as scanned by the optical scanning device. Thus the input signal …
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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 7, 1992 and granted November 12, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 7, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 7, 2014.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.