Automatic frequency control circuit
CA 2206386 C · Owner: Mitsubishi Denki Kabushiki Kaisha · Inventors: Asahara, Takashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A signal from a differential detecting section is decoded by a data decision section and is inputted into a detection area judging section. In the detection area judging section synchronous word patterns such as a unique word periodically inserted into the decoded data is detected determination is, made as to in which area the synchronous word pattern was detected, and in a case where it is judged by the capture determining section that frequency control is executed at an incorrect phase control point, a frequency deviation control section computes a control rate for a frequency deviation so that a detection area for the received signal will enter an area of a correct phase control point …
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 May 27, 1997 and granted May 30, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 27, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 27, 2019.
- 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.