Communications: electrical – Systems – Selsyn type
Reexamination Certificate
2005-12-20
2005-12-20
Nguyen, Phung T. (Department: 2632)
Communications: electrical
Systems
Selsyn type
C340S315000, C370S501000
Reexamination Certificate
active
06977578
ABSTRACT:
Isolating data in a power line communications system. Although plural subscribers receive electric power distributed from a common distribution transformer, it is desirable to isolate their branch lines from one another when those branch lines are used to conduct data communications as a supplement to electric power delivery. This isolation of branch lines implemented in a centralized way at the distribution transformer, or alternatively, in a distributed way at each subscriber's premises. These implementations are made using low pass filters (which pass the power but block the data) and power line communications routers or power line communications repeaters.
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Barnes Mel
Current Technologies, LLC
Manelli Denison & Selter PLLC
Nguyen Phung T.
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