Method and apparatus for optical transceiver testing
CA 2089995 C · Owner: Ochsner, Douglas A. · Inventors: Jackson, Charles L.; Ochsner, Douglas A.; Jackson, Charles L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus are disclosed for providing a self-test feature for an apparatus utilizing an optical communication link, such as commercial laundry appliances having a data acquisition system for storing information on appliance usage for subsequent transmission to a portable data unit. A signal having at least one known characteristic is applied to the transmitting portion of an optical transceiver, and at least a portion of the resulting transmitted optical energy is coupled to the optical detector of the receiving section of the same transceiver. The characteristics of the resulting output of the receiver elements of the transceiver corresponding to the coupled signal are …
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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 February 19, 1993 and granted January 19, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 19, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 19, 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
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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.