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AssigneeGentex Corporation
InventorsJon H. Bechtel, David L. Poll
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An electrical control system is disclosed for controlling a plurality of variable transmittance windows. The electrical control system of the present invention comprises a master control circuit for supplying control signals representing transmittance levels for the variable transmission windows, and a plurality of window control circuits coupled to each of the master control circuit. Because the window control circuits can sense abnormal load conditions in the variable transmission windows, the system further includes an interface to a security system to inform of a potential intrusion. Each window control circuit controls the transmittance of at least one of the variable transmission windows in response to control signals received from the master control circuit.
An electrical control system for controlling the transmittance of at least one variable transmission window, said control system comprising:
A building comprising:
A method of determining whether a security breach has occurred through the breakage or opening of a variable transmission window, the variable transmission window providing a current path when closed, the method comprising the steps of:
Dependencies are inferred from the claim text.