Surgery – Truss – Pad
Patent
1995-08-15
1999-01-12
Lacyk, John P.
Surgery
Truss
Pad
128689, 128690, A61B 502
Patent
active
058574654
ABSTRACT:
A variable accuracy biosignal detector includes a biosignal detector for detecting a biosignal such as a pulse wave from a living body and supplies the detected signal to a biosignal analog-to-digital converter. The analog-to-digital converter converts the biosignal to digital biosignal data values and stores the data in a memory. An input switch generates a start signal. In response to the start signal, a timing signal generating circuit generates a timing signal used as a sampling signal for driving the analog-to-digital converter and changes the sampling frequency of the analog-to-digital converter progressively on a time series basis. A biosignal calculating circuit performs frequency domain analysis when the number of stored digital biosignal data values reaches a predetermined value. By progressively reducing the sampling frequency of the analog-to-digital converter, measured results can be quickly displayed, while the accuracy of the displayed results is progressively increased.
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Kosuda Tsukasa
Nakamura Chiaki
Lacyk John P.
Ruddy David
Seiko Epson Corporation
Seiko Instruments Inc.
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