Patent ID: 8271216

Claim:
A current measurement system comprising: a line-side device that includes: a current sensing device, the current sensing device configured to generate a voltage proportional to current flowing from a power source; an analog-to-digital converter in communication with the current sensing device, the analog-to-digital converter configured to convert the voltage to first digital data; and an encoder in communication with the analog-to-digital converter, the encoder configured to transform the first digital data into encoded digital data; a host-side device that includes: a decoder configured to transform the encoded digital data into decoded digital data; and a processor in communication with the decoder configured to compute an indication of a power consumption based in part on the decoded digital data; and an isolation barrier configured to provide at least partial electrical isolation between the encoder and the decoder, wherein operating power is supplied from the host-side device to the analog-to-digital converter through the isolation barrier, wherein second digital data is provided from the host-side device to the line-side device through the isolation barrier, and wherein the encoded digital data is provided to the decoder through the isolation barrier.