Apparatus and method for adjusting filter frequency in relation to sampling frequency

Roy Douglas (Inventor), Geoffrey McCullough (Inventor)

Research output: Patent

Abstract

A self-tuning filter is disclosed. The self-tuning filter includes a digital clocking signal and an input coupled to the digital clocking signal, whereby the input reads a value incident on the input when the digital clocking signal changes to a predetermined state. A clock-tunable filter is, furthermore, coupled to the digital clocking signal so that the frequency of the clock-tunable filter is adjusted in relation to a sampling frequency at which the digital clocking signal operates. The self-tuning filter may be applied to an input of a data acquisition unit and applied to an input having a variable sampling frequency. A method of controlling the frequency of a clock-tunable filter is also disclosed.
Original languageEnglish
Patent numberUS 7756229
Publication statusPublished - Jul 2010

Bibliographical note

Commissioning Body / Publisher: US Patent Office
Pagination / Size: 12

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