Multiple accumulator fractional n synthesis with series recombination
CA 2107771 C · Owner: Motorola, Inc. · Inventors: Hietala, Alexander W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present patent application discusses the use of a frequency synthesizer (903) in a radiotelephone (901). The synthesizer (903) is of a fractional N type. The synthesizer (903) utilizes multiple latched accumulators (1000) within an accumulator, network, to perform multiple integrals of an input signal (215). The outputs of the accumulators are combined in series to form a data output signal (229). The data output signal (229) is input to a divider network (111) and used as a variable divisor of the frequency input (119) into the divisor network (111).
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 December 23, 1992 and granted March 16, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 23, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 23, 2014.
- 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.