Optics: measuring and testing – For light transmission or absorption – Of fluent material
Patent
1989-02-28
1989-09-19
McGraw, Vincent P.
Optics: measuring and testing
For light transmission or absorption
Of fluent material
356 41, 128633, G01N 2100, G01N 3349
Patent
active
048675717
ABSTRACT:
A device and method for determining pulses in a modulated signal is disclosed. The modulated signal is processed and converted into a quantized analog type of digital data stream. The data stream is evaluated over time by considering preceeding and subsequent values in the data stream to generate a filtered wave form. By using extreme values in the filtered wave form pulse detection is accurately determined regardless of whether the modulated signal has complicating features, such as dicrotic notch, or high noise levels, or both.
REFERENCES:
patent: 2706927 (1955-04-01), Wood
patent: 3522139 (1970-08-01), Coor et al.
patent: 3638640 (1972-02-01), Shaw
patent: 3647299 (1972-03-01), Lavallee
patent: 3799672 (1974-03-01), Vurek
patent: 3842355 (1974-10-01), Fleagle
patent: 3938052 (1976-02-01), Glasson et al.
patent: 3992672 (1976-11-01), Fasching
patent: 3998550 (1976-12-01), Konishi et al.
patent: 4063551 (1977-12-01), Sweeny
patent: 4086915 (1978-05-01), Kofsky et al.
patent: 4093988 (1978-06-01), Scott
patent: 4167331 (1980-07-01), Nielson
patent: 4214213 (1980-07-01), Ferrie
patent: 4260951 (1981-04-01), Lewyn
patent: 4266554 (1981-05-01), Hamaguri
patent: 4402290 (1983-10-01), Wilber
patent: 4523279 (1985-06-01), Sperinde et al.
Grover, "Improved Extracorporeal Reflectance Oximeter", Conference Proceedings of the 26th Annual Conference on Engineering in Medicine and Biology, Sep. 30-Oct. 4, 1973, p. 275.
Kramer et al., "Influence of Oxygen Saturation, Erythocyte Concentration and Optical Depth Upon the Red and Near-Infrared Light Transmittance of Whole Blood", American Journal of Physiology, 165:229-246 (1951).
Schibili et al., "An Electronic Circuit for Red/Infrared Oximeters", IEEE Transactions on Bio-Medical Engineering, vol. BME-25, No. 1, Jan., 1978.
Tait et al., "A Theoretical Analysis of Some Errors in Oximetry", IEE Transactions on Bio-Medical Engineering, vol. BME-13, No. 4, Oct., 1966.
Wood and Garci, "Photoelectric Determination of Arterial Oxygen Saturation in Man", J. Lab. Clin. Med. 34, pp. 387-401 (1949).
Frick Gene
McCarthy Rex
Pawlowski Michael
McGraw Vincent P.
Oen William L.
Sensormedics Corporation
LandOfFree
Wave form filter pulse detector and method for modulated signal does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Wave form filter pulse detector and method for modulated signal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wave form filter pulse detector and method for modulated signal will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-365016