Method of controlling power output by a primary power source so

Details Method of controlling power output by a primary power source so Method of controlling power output by a primary power source so

1994-12-02

1998-09-08

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

455 383, 455343, 455517, H04B 138

Patent

active

058060065

ABSTRACT:
A system for reducing power consumption by a portable electronic communication device. Modem circuit for receiving messages and for transmitting messages from a portable electronic communication device are powered via power source control/switch coupled thereto. A logic circuit is coupled to the power source control/switch for control the power source control/switch to selectively deliver power to the modem circuit of the portable electronic communication device during a first time interval and to withhold power from the modem circuit of the portable electronic communication device during a second time interval. A low power control clock/counter is coupled to the logic circuit means for measuring the duration of the first and second time intervals. In one embodiment, the first time interval occurs while the modem circuit of the portable electronic communication device is transmitting or receiving messages. Thus, the modem circuit uses power only when transmitting and receiving, but does not consume substantial power during standby periods.

REFERENCES:
patent: 4701943 (1987-10-01), Davis et al.
patent: 5241542 (1993-08-01), Natarajan et al.
patent: 5278831 (1994-01-01), Mabey et al.
patent: 5461558 (1995-10-01), Patsiokas et al.
patent: 5519506 (1996-05-01), D'Avello et al.
patent: 5535207 (1996-07-01), Dupont

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