US Patent No. 9,609,720

SYSTEMS AND METHODS FOR PROVIDING POWER AND DATA TO LIGHTING DEVICES


Patent No. 9,609,720
Issue Date March 28, 2017
Title Systems And Methods For Providing Power And Data To Lighting Devices
Inventorship Peter John Woytowitz, San Diego, CA (US)
Gregory R. Hunter, Solana Beach, CA (US)
Assignee HUNTER INDUSTRIES, INC., San Marcos, CA (US)

Claim of US Patent No. 9,609,720

1. A control device to control illumination intensity of a lighting device configured to be powered from a first sinusoidal
AC signal, the control device communicating with a controller configured to address a system of lights over a two-wire communication
network using a second sinusoidal AC signal with data encoded power waveforms that comprise command and address data including
illumination intensity data, said lighting device not in communication with said two-wire communication network, said control
device comprising:
a switching circuit configured to receive said first sinusoidal AC signal;
a detection circuit configured to receive said first sinusoidal AC signal and to sense phase information of said first sinusoidal
AC signal; and

a processor in communication with said two-wire communication network, the processor configured to determine control data
responsive to said command and address data and illumination intensity data of said data encoded power waveforms, to receive
said phase information, and to generate a trigger signal responsive to said phase information and said control data, said
trigger signal comprising a delay time based at least in part on said illumination intensity data, said switching circuit
further configured to receive said trigger signal and to generate a third sinusoidal AC signal by conducting said first sinusoidal
AC signal responsive to said trigger signal to said lighting device, said trigger signal inhibiting said conduction of said
first sinusoidal AC signal to said lighting device during said delay time, wherein a voltage of said third sinusoidal AC signal
is less than a voltage of said first sinusoidal AC signal when said delay time is non-zero;

wherein the control device is configured to be powered by said first sinusoidal AC signal, to receive said data encoded power
waveforms from said second sinusoidal AC signal, and to modify said first sinusoidal AC signal to produce said third sinusoidal
AC signal that is configured to power said lighting device and to control said illumination intensity of said lighting device,
wherein said third sinusoidal AC signal is different from said second sinusoidal AC signal.