Local oscillator and its frequency switching method
CA 2107632 C · Owner: Nec Corporation · Inventors: Sasaki, Yutaka
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A local oscillator and its frequency switching method in, which local signals with less spurious components can be obtained. There are provided with frequency generators for generating signals with different frequencies and frequency dividers respectively connected to the generators. The dividers divide in frequency the signals to output them in an active mode, and output the signals without division in inactive mode. The dividers are controlled so that one of the dividers is in the active mode and the rest is in inactive mode. The output signals from the dividers are combined with each other to form a single output current and then is sent to a filter. The filter selects a component with a …
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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 October 4, 1993 and granted June 3, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 4, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 4, 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.