Radio receiver with reception-readiness monitoring feature, and method
CA 1190601 A · Owner: Blaupunkt-Werke G.M.B.H. · Inventors: Eilers, Norbert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
To monitor the operability of a radio receiver which has special recognition circuitry to recognize warning ro emergency announcements a, modulation detector (11) is provided sensing the change in degree of, modulation of a region recognition (RR) signal which changes its degree, of modulation when an announcement recognition (AR) signal is radiated the degree-of-modulation signal being stored in a memory (flip-flop 12) the output of which controls a transfer switch (6). The transfer switch transfers output from a muting stage (5) in the receiver which is dis-, abled upon detection of the AR frequency to a tone generator for, application to the amplifier of a warning tone if no change in …
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 16, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 16, 2002.
- 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.