Title:
APPARATUS AND METHOD FOR ADJUSTING FILTER FREQUENCY IN RELATION TO SAMPLING FREQUENCY
Document Type and Number:
WIPO Patent Application WO2002071617
Kind Code:
A9
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.
Inventors:
DOUGLAS ROBERT
MCCULLOUGH GEOFFREY
MCCULLOUGH GEOFFREY
Application Number:
PCT/US2002/006288
Publication Date:
January 30, 2003
Filing Date:
March 01, 2002
Export Citation:
Assignee:
OPTIMUM POWER TECHNOLOGY LP (US)
International Classes:
H03H17/02; F02D45/00; H03M1/06; (IPC1-7): H03M1/12
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