Method and circuit for saving the power of a battery used in a portable radio telephone
CA 2085686 C · Owner: Samsung Electronics Co. Ltd. · Inventors: Lee, Young-Sub
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The portable radio telephone performs the channel scanning for one of the two channel systems "A" and "B" divided from a cellular service band to select two channels with largest RSSIs. The main processor determines which one of the two channels receives the data, so as to tune the telephone to the channel that receives the data, and stands by. The main processor stops the operation during detecting word synchronization signal thus, saving the battery power.
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 17, 1992 and granted April 7, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 17, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 17, 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.