Patent ID: 8830040
Filing Date: 2014-09-09
Classification: G08C,H02J,H04B,Y02E,Y04S

Abstract:
1. A method for communicating information to a direct current (DC) powered electronic device, the method comprising: receiving alternating current (AC) power with an AC information signal modulated thereon; converting the received AC power to DC power, wherein the DC power is transmitted to the DC powered electronic device at a DC voltage defined by a nominal DC voltage value; demodulating the received AC information signal to determine the information; modulating the information onto the transmitted DC power as a DC information signal, wherein the information modulated onto the DC information signal comprises a series of first binary numbers and second binary numbers, wherein each first binary number is defined by a pull up DC voltage and each second binary number is defined by a pull down DC voltage; detecting, at the DC powered electronic device, the DC voltage of the transmitted DC power; determining a percentage change in the detected DC voltage; determining that the information has changed from the first binary number to the second binary number when the magnitude of the percentage change of the detected DC voltage of the transmitted DC power is a decrease that is at least equal to a predefined percentage change; and determining that the information has changed from the second binary number to the first binary number when the magnitude of the percentage change of the detected DC voltage of the transmitted DC power is an increase that is at least equal to the predefined percentage change, wherein the pull up DC voltage is at least five percent greater than the nominal DC voltage value and wherein the pull down DC voltage is at least five percent less than the nominal DC voltage value.