Automobile multiple communication system operable under low powe

Details Automobile multiple communication system operable under low powe Automobile multiple communication system operable under low powe

1993-02-19

1996-09-10

Bowler, Alyssa H.

Communications: electrical

Continuously variable indicating

With meter reading

34082512, 370 851, G05B 2302, H04S 314, H04L 1100

Patent

active

055549780

ABSTRACT:
A multiplex communication system for an automobile which achieves low-power-consumption operation of a plurality of child stations. The system includes a parent station having a judging element to judge whether a communication mode of the system corresponds to one of a normal communication mode and a low-power-consumption mode; at least a child station having a detection unit for detecting that the supply of power to the child station has commenced to produce a power-supply detection signal, and a compulsory condition changing unit for changing a present operation condition of the child station to a low-power-consumption state in response to the power-supply detection signal; and a communication line for connecting the parent station and the child station. In the disclosed embodiment, the judging unit judges that the present communication mode corresponds to the normal communication mode and sets operation conditions of the child station and the parent station to normal operation conditions so as to perform a communication between the child station and the parent station. Alternatively, the judging unit judges that the present communication mode corresponds to the low-power-consumption communication mode and sets operation conditions of the child station to a low-power-consumption operation condition.

REFERENCES:
patent: 4155075 (1979-05-01), Weckenmann et al.
patent: 4628308 (1986-12-01), Robert
patent: 5121386 (1992-06-01), Wolfsgruber et al.
patent: 5161151 (1992-11-01), Kimura et al.

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