Patent ID: 9461743
Filing Date: 2016-10-04
CPC Classification: H04B

Claim Text:
1. A data communication apparatus comprising: a photodiode configured to convert a light pulse to an electrical signal; a balun configured to split the electrical signal into a first electrical signal and a second electrical signal; an electronic delay to delay the first electrical signal by a duration greater than or equal to an amount of time necessary for the electrical signal to decay to a voltage value corresponding to a least significant bit; a first track-and-hold element connected to the delay, configured to sample the first electrical signal; a first analog-to-digital converter connected to the first track-and-hold element, configured to measure and digitize a first sampled electrical signal with reference to a first reference voltage; a second track-and-hold element configured to sample the second electrical signal of the two electrical signals; a second analog-to-digital converter connected to the second track-and-hold element, configured to measure and digitize a second sampled electrical signal with reference to a second reference voltage; and a processor configured to convert a signal corresponding to a voltage difference between the first electrical signal and the second electrical signal into a digital output, wherein the first analog to digital converter and the second analog to digital converter are connected to the processor.