Power supplying apparatus, power line communication...

Details Power supplying apparatus, power line communication... Power supplying apparatus, power line communication...

2006-12-27

2010-12-14

Phan, Huy (Department: 2617)

Telecommunications

Having single-channel telephone carrier

Over power line

C455S550100, C455S127100, C455S466000

Reexamination Certificate

active

07853237

ABSTRACT:
A power line communication modem within a network camera outputs a communication signal to an AC adaptor. Then, a signal superimposition and separation circuit of the AC adaptor separates a received communication signal from a DC voltage and an amplifier of the AC adaptor amplifies a signal level of the communication signal and then outputs the amplified signal to a power line through a plug. The communication signal is transmitted through a DC cable under a state in which a signal level of the communication signal is attenuated. Accordingly, even when the cable length of a DC cable is large, unnecessary radiation can be suppressed.

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PCT International Search Report dated May 24, 2007 with Written Opinion.

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