Method and apparatus for backup power in a communication system

Details Method and apparatus for backup power in a communication system Method and apparatus for backup power in a communication system

2006-01-31

2006-01-31

Matar, Ahmad F. (Department: 2642)

Telecommunications

Receiver or analog modulated signal frequency converter

With particular receiver circuit

C455S343100, C455S343200, C455S343300, C455S343400, C455S343500, C455S343600, C455S572000

Reexamination Certificate

active

06993316

ABSTRACT:
A digital receiver unit (28) having a backup energy source (214) for use in a vehicle (250) that operates on a primary energy source (216) includes a receiver (203) powered by the primary energy source when the vehicle is operating, a switching mechanism (210and212) for switching the receiver between the primary energy source and the backup energy source and a controller (210) coupled to the receiver for controlling the switching mechanism. The receiver receives data during a scheduled predetermined time and the backup energy source powers the receiver during the scheduled predetermined time if the vehicle is not operating.

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patent: 6721580 (2004-04-01), Moon
patent: 2002/0049879 (2002-04-01), Eyer

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