The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 25, 1992
Filed:
Aug. 15, 1990
Minoru Niwa, Nagoya, JP;
Colin Electronics, Co., Ltd., Komaki, JP;
Abstract
An apparatus for detecting a pulse wave produced from a subject in synchronous relationship with heartbeats of the subject, including a probe device for sensing a heartbeat synchronous pulse wave transmitted thereto and generating a signal representative of the sensed pulse wave, a sampling device for periodically determining a magnitude of the signal, a determining device for determining a lower peak and a following upper peak of the heartbeat synchronous pulse wave based on variation of the magnitudes determined by the sampling means, a calculating device for calculating a value by subtracting, from each of the magnitudes determined by the sampling means, a magnitude of the signal determined by the sampling means prior by a predetermined number of periods to the each of the magnitudes, and a judging means for judging whether or not the following upper peak is a proper upper peak of a pulse of the heartbeat synchronous pulse wave, based on the values calculated by the calculating means with respect to a portion of the signal between the lower peak and the following upper peak.