专利名称：SYSTEMS AND METHODS FOR
DETERMINING RESPIRATION
INFORMATION USING PHASE LOCKED LOOP
发明人：James Dripps,James Ochs,Paul S. Addison申请号：US13343389申请日：20120104
公开号：US20130172767A1公开日：20130704
专利附图：
摘要：A patient monitoring system may receive a physiological signal such as aphotoplethysmograph (PPG) signal that exhibits frequency and amplitude modulation
based on respiration. A phase locked loop may generate a frequency demodulated signaland an amplitude demodulated signal from the PPG signal. An autocorrelation sequencemay be generated for each of the frequency demodulated signal and the amplitudedemodulated signal. The autocorrelation sequences may be combined and respirationinformation may be determined based on the combined autocorrelation sequence.
申请人：James Dripps,James Ochs,Paul S. Addison
地址：West Linton GB,Seattle WA US,Edinburgh GB
国籍：GB,US,GB
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