US Patent No. 10,219,359

BATTERY-POWERED CONTROL DEVICE


Patent No. 10,219,359
Issue Date February 26, 2019
Title Battery-powered Control Device
Inventorship Matthew V. Harte, Stewartsville, NJ (US)
Jeffrey S. Hayes, Allentown, PA (US)
Stephen M. Ludwig, Jr., Whitehall, PA (US)
Robert C. Newman, Jr., Emmaus, PA (US)
Jaykrishna A. Shukla, Mays Landing, NJ (US)
Assignee LUTRON ELECTRONICS CO., INC., Coopersburg, PA (US)

Claim of US Patent No. 10,219,359

1. A control device comprising:a sensing circuit configured to generate a sensing signal;
a processing circuit configured to enter a sleep state when the sensing signal is in a steady state condition; and
a wake-up logic circuit configured to:
generate and pulse-width modulate (PWM) an enable control signal when the processing circuit is in the sleep state to periodically enable and disable the sensing circuit;
receive the sensing signal from the sensing circuit;
determine that a magnitude of the sensing signal has changed; and
upon determining that the magnitude of the sensing signal has changed, generate a wake-up signal for causing the processing circuit to change from the sleep state to an active state.