| 摘要 |
The remote control of electrical power through a number of outlets at selected locations in the walls and ceiling of a building structure is disclosed herein. This is accomplished by applying the electrical power from a source through the walls and ceiling of a building structure to the selected locations. At the same time a clock signal of predetermined frequency and amplitude is generated and carried by a cable to a number of encoders which are located at respective control stations remote from the outlets and also to a number of decoders which are located at and associated with the various outlets. Each of these encoders, when actuated, generates a distinct code signal which is carried to all of the decoders on a common line and in synchronism with the clock signal which is provided for coordinating operation of the encoders and decoders. A preselected one of the decoders responds to this coded signal and accompanying clock signal for automatically applying the electrical power to its associated outlet.
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