DOPPLER SIGNAL ANALYZER - YOKOGAWA MEDICAL SYST

Title:

DOPPLER SIGNAL ANALYZER

Document Type and Number:

WIPO Patent Application WO/1986/000997

Kind Code:

A1

Abstract:

A Doppler signal analyzer analyzes the frequency of Doppler signals relying upon the frequency resolving power and the time resolving power that are adapted to the frequency band of the signals to be analyzed. The signals to be analyzed are divided into a plurality of frequency bands through band-pass means (101, 102, 103). The signals of the thus divided frequencies that have passed through band-pass means are obtained by signal-obtaining means (11) over a small time slot for the signals of high frequencies and over a large time slot for the signals of low frequencies. The signals obtained by the signal-obtaining means are subjected to Fourier transformation through Fourier transformation means (14).

Inventors:

TAKEUCHI YASUHITO (JP)
SANO SHINICHI (JP)
JIBIKI TAKAO (JP)
HIGASHIIZUMI TAKAO (JP)

Application Number:

PCT/JP1985/000410

Publication Date:

February 13, 1986

Filing Date:

July 19, 1985

Export Citation:

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Assignee:

YOKOGAWA MEDICAL SYST (JP)

International Classes:

A61B8/06; A61B8/00; G01P5/00; G01R23/16; G01R23/165; G01S13/58; G01S15/58; G06F17/14; (IPC1-7): G01R23/16

Foreign References:

JPS59116057A	1984-07-04
JPS58118741A	1983-07-14
JPS4835866A	1973-05-26

Other References: