High Dynamic Range Analog-to-Digital Conversion with Selective Regression Based Data Repair

摘要

A multi-stage analog-to-digital conversion method and system use window functions and translation to match high gain frames of data to target frames of data. The technique selects window data packets for the output stream based the stage of data having the highest gain satisfying selection criteria, such as requiring a frame of data for the respective stage to satisfy a predetermined accuracy of fit value compared to a target frame of data for a zero gain stage.

主权项

1. A method of converting an analog input signal to a high fidelity digital output signal, comprising the steps of:
transmitting an analog input signal from an analog signal source; providing the analog input signal in at least two stages having distinct levels of amplification; converting each resultant amplified analog input signal to a digital input signal for the respective stage; assigning data samples for each stage to correspond to a frame in dependence on when they are received; applying a window function overlapping in time to each frame of data to create windowed data packets for each respective stage; providing the windowed data packets as inputs to a combiner; selecting a windowed data packet for one of the stages to be used by the combiner to generate the digital output signal.