Mobile communications terminal having malfunction-preventing...

Details Mobile communications terminal having malfunction-preventing... Mobile communications terminal having malfunction-preventing...

2005-10-25

2008-12-16

Phu, Sanh D (Department: 2618)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C455S573000, C455S574000, C455S127100, C320S112000, C320S113000, C320S114000, C320S115000

Reexamination Certificate

active

07466995

ABSTRACT:
A mobile communication terminal having a malfunction-preventing function is provided, including a keypad; a voltage source which is activated by voltage supplied to an EN terminal, processes voltage supplied from a battery, and outputs the processed voltage; a power_on switching unit switched on when a switch_on key of the keypad is pressed; a charging terminal supplying voltage supplied upon charging to the EN terminal; a malfunction-preventing unit preventing voltage from being supplied from the charging terminal to the EN terminal while a control signal is input; and a controller which is activated by voltage supplied from the voltage source during a power-off condition, controls the mobile communication terminal by supplying voltage to the EN terminal of the voltage source and receiving voltage from the voltage source, and outputs a control signal to the malfunction-preventing unit only when a power-off process is performed according to a power-off instruction from the keypad.

REFERENCES:
patent: 6211649 (2001-04-01), Matsuda
patent: 2003/0050102 (2003-03-01), Roh
patent: 2003/0201755 (2003-10-01), Briggs et al.
patent: 2005/0046384 (2005-03-01), Simoes et al.
patent: 2005/0242778 (2005-11-01), Lin

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