Title:
【発明の名称】相関回路及びこの相関回路を用いる媒質中の移動因子決定装置
Document Type and Number:
Japanese Patent JP2588527
Kind Code:
B2
Abstract:
A circuit for determining the cross-correlation function between two digitally sampled signals comprises a plurality of fractional step delay (FSD) digital interpolation filters (86, 87, 88) which estimate the value of one of said input signals at intervals between said samples and a plurality of correlation circuits (89-97) each of which determined the correlation between the first signal and the output of one of said interpolation filters. A device for ultrasound flow mapping comprising such a circuit has an improved accuracy.
Inventors:
KYASUPAA UIRIAMU BAANZU
Application Number:
JP9635087A
Publication Date:
March 05, 1997
Filing Date:
April 21, 1987
Export Citation:
Assignee:
FUIRITSUPUSU EREKUTORONIKUSU NOOSU AMERIKA CORP
International Classes:
A61B8/06; G01S7/52; G01S7/526; G01S15/50; G01S15/89; G06F17/15; (IPC1-7): G01S7/526; G01S15/50; G01S15/89; G06F17/15
Attorney, Agent or Firm:
Akihide Sugimura (1 outside)