Analyte signal processing device and methods

  • US 9,968,302 B2
  • Filed: 04/04/2016
  • Issued: 05/15/2018
  • Est. Priority Date: 08/31/2009
  • Status: Active Grant
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First Claim
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1. A method, comprising:

  • determining a measurement time period;

    generating a plurality of clock signals using a clock;

    receiving a plurality of analog signals associated with a monitored analyte level during the determined measurement time period from an analyte sensor, the measurement time period establishing a maximum signal resolution associated with the clock and a sigma-delta modulator as a function of analog to digital conversion time to obtain a higher signal resolution;

    modulating the received plurality of analog signals using the sigma-delta modulator to generate a frequency data stream over the measurement time period based on the received plurality of analog signals by synchronizing each of the received plurality of analog signals to a corresponding one of the generated plurality of clock signals, and filtering one or more signal artifacts from the frequency data stream over the measurement time period, the one or more signal artifacts including a signal transient; and

    accumulating the generated frequency data stream to determine an analyte signal corresponding to the monitored analyte level associated with the measurement time period.

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