Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2007-06-12
2007-06-12
Anderson, Matthew (Department: 2618)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S520000, C455S553100, C455S518000, C370S327000, C370S340000, C379S026010, C379S012000, C379S112080, C379S232000, C379S235000, C379S236000, C379S246000
Reexamination Certificate
active
10205422
ABSTRACT:
The present invention provides a method and apparatus for monitoring a trunked radio communications system by using some type of radio scanning receiver that is not designed for that purpose. In addition, the invention provides a method for automatically determining the polarity of the received control channel data. Further, the invention provides a method for automatically determining the type of trunked radio communications system. In addition the invention provides a method for automatically determining the channels in a trunked radio system and a method for automatically determining the bit rate of transmitted digital signals over a control channel of a trunked radio communications system.
REFERENCES:
patent: 5506837 (1996-04-01), Sollner et al.
patent: 5586119 (1996-12-01), Scribano et al.
patent: 5710978 (1998-01-01), Swift
patent: 6519472 (2003-02-01), Brennan et al.
Aminzay Shaima Q.
Anderson Matthew
Dort David
Rubinstein Law Group P.C.
Signal Intelligence, Inc.
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