Apparatus and method for providing power to circuitry implementi

Details Apparatus and method for providing power to circuitry implementi Apparatus and method for providing power to circuitry implementi

1997-07-28

2000-01-04

Elms, Richard T.

Electrical transmission or interconnection systems

Plural supply circuits or sources

365226, 39575001, H02J 100, G06F 100, G11C 700

Patent

active

060113227

ABSTRACT:
An apparatus and method for providing power control in an in-flight entertainment system is disclosed. The power control circuit comprises a first power supply that supplies a first voltage and a second power supply that supplies a second voltage. The circuit further comprises a detector circuit having an input terminal is coupled to the first power supply, and an output terminal that is coupled to the second power supply. The detector circuit generates a first signal upon detection of a valid first voltage level. A control circuit is coupled to the first power supply and the output terminal of the detector circuit. The control circuit is enabled upon receipt of the first signal. A processing circuit is coupled to the second power supply and the control circuit, wherein the second power supply provides the second voltage to the processing circuit upon receipt of the first signal, and the control circuit issues an enable signal to the processing circuit when the processing circuit has received the second voltage.

REFERENCES:
patent: 4730122 (1988-03-01), Dreielbis et al.
patent: 5515134 (1996-05-01), Taguchi
patent: 5732914 (1998-03-01), Nakayama et al.

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