Synchronizing signal recovery circuit for radiotelephones
CA 1207057 A · Owner: Novatel Communications Ltd. · Inventors: El-Banna, Mahmoud A.S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved circuit for synchronizing signal recovery particularly suitable for mobile radiotelephone operation is disclosed. The initializing circuit of the phase-locked loop in the data receiver is inhibited for a predetermined duration upon triggering of a "window mode" by either of a rising or falling pulse-edge in a sequence of "ones" or "zeros" in the received data. The window mode masks the invalid transitions in such sequences and prevents retriggering by such transitions.
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
- Granted July 2, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 2, 2003.
- 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.