Multi-mode radiotelephone having a multiple battery arrangement

Details Multi-mode radiotelephone having a multiple battery arrangement Multi-mode radiotelephone having a multiple battery arrangement

1997-04-01

2000-02-01

Bost, Dwayne D.

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

320 5, 320111, 340636, H04Q 732

Patent

active

060213329

ABSTRACT:
A radiotelephone (100) includes a main battery (101) and is operable on a first communication system. A supplemental module (102) may be attached to the radiotelephone. The supplemental module may include a second RF communication circuit for communicating with a second communication system. This allows the user to configure the radiotelephone for communication with currently available systems. The supplemental module may further include an auxiliary battery for providing extended battery operation. The radiotelephone includes a discharging and charging circuit (310) to control the discharge and charge of the auxiliary and main batteries in a way that allows uninterrupted, continuous operation of the radiotelephone.

REFERENCES:
patent: 5036532 (1991-07-01), Metroka et al.
patent: 5489834 (1996-02-01), Pitkanen
patent: 5535432 (1996-07-01), Dent
patent: 5684384 (1997-11-01), Barkat et al.
patent: 5717307 (1998-02-01), Barkat et al.
patent: 5732359 (1998-03-01), Baranowsky, II et al.

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