Data and digital control communication over power
First Claim
Patent Images
1. A power supply system to generate a power signal for providing power to a device, the power supply system comprising:
- a transmitter to;
modulate a data signal onto the power signal as a stream of bits, the data signal to be demodulated at the device, andmodulate a single-state binary control signal onto the power signal to change a state of a digital control parameter associated with the device,wherein the transmitter is to modulate the data signal and the single-state binary control signal to occupy different modulation states of a plurality of modulation states provided on the power signal, the plurality of modulation states being a plurality of phase angles of a phase-shift keying modulation of the power signal,the transmitter is to modulate the single-state binary control signal on a phase angle of the plurality of phase angles different from a phase angle of the plurality of phase angles on which the transmitter modulates the data signal,the device includes a phase-locked loop to generate a sinusoidal wave to demodulate the data signal and the binary control signal, andthe single-state binary control signal and each bit of the stream of bits of the data signal are encoded according to a same unit of time, the unit of time being a fixed multiple of a quarter-period of the sinusoidal wave.
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Abstract
A power supply system and method are disclosed. The power supply system is to generate a power signal for providing power to a device. The power supply system includes a transmitter to modulate a data signal onto the power signal that is demodulated at the device. The transmitter is further to transmit a separate binary control signal on the power signal to change a state of a digital control parameter associated with the device.
18 Citations
15 Claims
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1. A power supply system to generate a power signal for providing power to a device, the power supply system comprising:
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a transmitter to; modulate a data signal onto the power signal as a stream of bits, the data signal to be demodulated at the device, and modulate a single-state binary control signal onto the power signal to change a state of a digital control parameter associated with the device, wherein the transmitter is to modulate the data signal and the single-state binary control signal to occupy different modulation states of a plurality of modulation states provided on the power signal, the plurality of modulation states being a plurality of phase angles of a phase-shift keying modulation of the power signal, the transmitter is to modulate the single-state binary control signal on a phase angle of the plurality of phase angles different from a phase angle of the plurality of phase angles on which the transmitter modulates the data signal, the device includes a phase-locked loop to generate a sinusoidal wave to demodulate the data signal and the binary control signal, and the single-state binary control signal and each bit of the stream of bits of the data signal are encoded according to a same unit of time, the unit of time being a fixed multiple of a quarter-period of the sinusoidal wave. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method comprising:
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providing to a device a power signal to power the device, the power signal having a plurality of modulation states, the plurality of modulation states being a plurality of phase angles of a phase-shift keying modulation of the power signal; modulating a data signal onto the power signal as a stream of data bits using a first modulation state of the plurality of modulation states provided on the power signal; interrupting the stream of data bits of the data signal to modulate a single-state binary control signal onto the power signal using a second modulation state of the plurality of modulation states, the first modulation state and the second modulation state being associated with different phase angles of the plurality of phase angles; demodulating the data signal and the single-state binary control signal using a sinusoidal wave generated by a phase-locked loop at the device; and changing a state of a digital control parameter at the device in response to the single-state binary control signal, wherein the single-state binary control signal and each bit of the stream of data bits of the data signal are encoded within a same unit of time, the unit of time being a fixed multiple of a quarter-period of the sinusoidal wave. - View Dependent Claims (10, 11, 12)
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13. A power distribution system comprising:
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a power distribution unit to generate a power signal for providing power, the power distribution unit comprising a transmitter to modulate a data signal and a binary control signal onto the power signal; and a plurality of devices to receive the power signal, each of the plurality of devices comprising a receiver that is to demodulate the data signal and the binary control signal, each of the plurality of devices being further to change a state of a digital control parameter in response to the binary control signal, wherein a plurality of modulation states are provided on the power signal, the plurality of modulation states being a plurality of phase angles of a phase-shift keying modulation of the power signal, the transmitter modulates the binary control signal on a phase angle of the plurality of phase angles different from a phase angle of the plurality of phase angles on which the transmitter modulates the data signal, the receiver includes a phase-locked loop to generate a sinusoidal wave to demodulate the data signal and the binary control signal, the data signal includes a stream of data bits, the binary control signal is a single-state signal, and each bit of the stream of data bits of the data signal and the single-state binary control signal are encoded within a same unit of time, the unit of time being a fixed multiple of a quarter-period of the sinusoidal wave. - View Dependent Claims (14, 15)
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Specification