Patent ID: 6473008
Filing Date: 2002-10-29
Classification: A61B,G11C

Abstract:
A system for sampling a data signal, comprising:an input terminal for receiving a data signal having a signal component and possibly a noise component; a sampler, coupled to the input terminal, for sampling the data signal at a sample rate set in response to a control signal; and a noise detector, coupled to the sampler, for detecting a noise component, and if a noise component is detected generating the control signal conditioning the sampler to sample the data signal at a first sample rate satisfying the Nyquist criterion for the data signal including the noise component, and otherwise generating the control signal conditioning the sampler to sample the data signal at a second data rate, satisfying the Nyquist criterion for the data signal including the signal component only wherein the second sample rate is a fixed sample rate greater than or equal to substantially twice the highest frequency of the signal component.