Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Patent
1995-07-27
1998-05-19
Vo, Nguyen
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
455127, 455571, H04B 140
Patent
active
057549621
ABSTRACT:
A system and method for indicating to a user that an operable-connection or non-operable connection has been made between a portable radio and a vehicle kit forming a mobile communication system. The system determines if an operable-connection has been made by determining if a hands-free-request signal, an external power signal, and an external antenna signal are present. Detection of the hands-free-request signal, external power signal, and external antenna signal are indicative that the portable radio and vehicle kit are operably connected such that the mobile communication system is fully operational. An operable-connection alert indicative of an operable connection between the portable radio and vehicle kit is generated by a radio display and an external speaker in response to a determination that the hands-free signal, external power signal and external antenna signal are present. In the preferred embodiment, the external antenna signal is determined by either comparing a measured received signal strength indicating (RSSI) with a reference RSSI value or detecting an increase in RSSI after inserting the portable radio into the cradle of the vehicle kit.
REFERENCES:
patent: 3500293 (1970-03-01), Cocco
patent: 4636741 (1987-01-01), Mitzlaff
patent: 4673861 (1987-06-01), Dubovsky et al.
patent: 4679026 (1987-07-01), Knakowski et al.
patent: 4850006 (1989-07-01), Sasaki et al.
patent: 4893348 (1990-01-01), Andoh
patent: 4962523 (1990-10-01), Tanaka
patent: 4974251 (1990-11-01), Ohta et al.
patent: 5033109 (1991-07-01), Kawano et al.
patent: 5184971 (1993-02-01), Williams
patent: 5261121 (1993-11-01), Hashimoto
patent: 5287553 (1994-02-01), Korycan
patent: 5303395 (1994-04-01), Dayani
patent: 5423083 (1995-06-01), Stellmach
patent: 5584055 (1996-12-01), Murui et al.
"User's Guide and Installation Manual--MAC 320E," Celline pp. 1-3, 6-7.
Ericsson Inc.
Matthews David G.
Nguyen Lee
Vo Nguyen
LandOfFree
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