Appliance control system utilizing bidirectional power line communications
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United States of America Patent
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-
Jun 15, 2004
Grant Date -
N/A
app pub date -
Apr 17, 2000
filing date -
Jun 17, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A control system for controlling operations of a plurality of electric appliances in distributed arrangements. Each of a plurality of controllers is connected between the power line and respective electric appliance. A remote controller is used to provide a control message to at least one of the controllers. The controller receiving the control message from the remote controller controls the corresponding appliance according to the control message when the control message is directed thereto. When the control message is directed to another controller, the controller which receives the control message provides the control message to the other controllers via the power line. When a data collision happens in the power line, the controller which transmitted the control message to other controllers retransmits the control message after a delay time determined based on a random number.
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