Surgery – Truss – Pad
Patent
1984-01-10
1985-12-03
Howell, Kyle L.
Surgery
Truss
Pad
7386125, 324 77B, 364485, A61B 1000
Patent
active
045560676
ABSTRACT:
The analog broadband output signal of a medical Doppler device is sampled at a constant rate to convert the signal to digital form. The sample values are stored consecutively in a random access memory component. Such values are recalled from such component at a readout rate different from the sampling rate so as to create a frequency-shifted intermediate broadband signal corresponding to the Doppler output signal. Such intermediate signal is filtered and the power of the filtered intermediate signal is continuously compared to the power of the unfiltered intermediate signal. The readout rate from the memory component is adjusted to maintain approximately the same proportionate relationship of the power of the filtered intermediate signal to the power of the unfiltered intermediate signal. The continuously adjusted readout rate from the memory component indicates a "band edge" frequency above or below which a preselected proportion of the total power of the Doppler signal resides.
REFERENCES:
patent: 3430625 (1969-03-01), McLeod, Jr.
patent: 3498290 (1970-03-01), Shaw et al.
patent: 3710792 (1973-01-01), Light
patent: 3715509 (1973-02-01), Dawson
patent: 3732532 (1973-05-01), Flaherty et al.
patent: 3896788 (1975-07-01), Sato
patent: 3901077 (1975-08-01), McCarty et al.
patent: 3922911 (1975-12-01), Groves et al.
patent: 3996925 (1976-12-01), Djordjevich
patent: 4084245 (1978-04-01), Bunge
patent: 4093989 (1978-06-01), Flink et al.
patent: 4103679 (1978-08-01), Aronson
patent: 4217909 (1980-08-01), Papadofrangakis et al.
patent: 4257278 (1981-03-01), Papadofrangakis et al.
patent: 4265126 (1981-05-01), Papadofrangakis et al.
patent: 4363099 (1982-12-01), Srinivasan et al.
Arneson Dennis C.
Hokanson D. Eugene
Beach Robert W.
Brown Ward
D. E. Hokanson, Inc.
Howell Kyle L.
Smith Ruth S.
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