Patent ID: 7876251
Filing Date: 2011-01-25
Classification: A61B,H03M

Abstract:
1. A patient monitoring signal processing system for adaptively varying medical signal data rate, comprising: an analog to digital converter for digitizing an analog cyclically varying input signal derived from a patient in response to a sampling clock input, said sampling clock determining frequency of analog to digital sampling of said analog input signal by said analog to digital converter; a detector for detecting first and second different signal portions within a cycle of said cyclically varying input signal; and a control processor coupled to said analog to digital converter and said detector, for providing said sampling clock and adaptively determining first and second different frequencies of said sampling clock to be used in sampling within detected corresponding first and second different signal portions of said cyclically varying input signal, the first frequency being higher than said second frequency of said first and second different frequencies in response to predetermined information indicating a frequency of a signal component of said cyclically varying input signal in the first signal portion is higher than a frequency of a signal component of said cyclically varying input signal in the second signal portion.