Mobile telephone apparatus with power saving

Details Mobile telephone apparatus with power saving Mobile telephone apparatus with power saving

1997-09-08

1999-09-14

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

455421, 455456, 455127, 455 383, H04B 116, H04B 726

Patent

active

059536772

ABSTRACT:
A mobile telephone apparatus is disclosed which comprises: a radio communication circuit having an antenna for receiving a radio wave signal and outputting a reception signal; a judging circuit responsive to the reception signal for judging whether the mobile telephone apparatus is inside or outside a service area; a detection circuit for detecting whether the mobile telephone apparatus is in a moving condition or a static condition; a power supply for supplying a power to the radio communication circuit; and a control circuit responsive to the judging circuit and the detection circuit for stopping supplying the power to the radio communication circuit when the mobile telephone apparatus is outside the service area and the mobile telephone apparatus is in the static condition. The detection circuit may comprises a acceleration sensor, a vibration sensor, a vehicle speed meter. The power consumption is further reduced by making the microprocessor and the acceleration sensor in a sleep mode. Intervals of the power saving mode can be displayed.

REFERENCES:
patent: 4903319 (1990-02-01), Kasai et al.
patent: 5134708 (1992-07-01), Marui et al.
patent: 5594951 (1997-01-01), Bellin
patent: 5832386 (1994-07-01), Nojima et al.

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