Patent ID: 9520894
Filing Date: 2016-12-13
CPC Classification: H03M

Claim Text:
1. A sensing system comprising: a transducer configured to convert sensed variations in a physical quantity to an analog electrical signal; an analog to digital converter (ADC) in communication with the transducer, the ADC configured to convert the analog electrical signal to a first digital signal having a first sampling rate and a plurality of first discrete-time values; and an encoder module in communication with the ADC, the encoder module configured to: decimate the first digital signal to produce a second digital signal having a second sampling rate and a plurality of second discrete-time values, generate a first set of first deltas, each first delta corresponding to a respective difference between one of the first discrete-time values and a selected first reference value, generate a second set of second deltas, each second delta corresponding to a respective difference between one of the second discrete-time values and a selected second reference value, and choose, based on a characteristic of the first digital signal, whether to output the first set or to output the second set.