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专利名称：Systems and methods for varying a sampling
rate of a signal
发明人：Raghunath Mammulli Kalathil申请号：US13936887申请日：20130708公开号：US09380969B2公开日：20160705
专利附图：
摘要：Methods and systems are provided that include sampling a light intensity signalat different frequencies based on the waveform of the signal to produce a more accuratedigitized signal. The light intensity signal is an analog signal proportional to the intensity
of light received at a detector of a pulse oximetry system. In one embodiment, the signalmay be sampled exponentially during pulse width periods, such that the end of the pulsewidth periods where the signal reaches a maximum amplitude may be sampled morefrequently. The signal may also be exponentially sampled or oversampled during periodswhen the signal is expected to near a maximum amplitude. Further, the signal may besampled less frequently during low amplitude periods of the signal, and during darkperiods, such that processing power may be conserved.
申请人：Covidien LP
地址：Mansfield MA US
国籍：US
代理机构：Fletcher Yoder PC
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