Title:
超音波診断装置
Document Type and Number:
Japanese Patent JP2528304
Kind Code:
B2
Abstract:
The errors in phase produced by inaccuracies in the locations of taps on a delay line are compensated for by determining the error of each by transmitting oscillations from a test oscillator through each tap and storing the difference between the actual phase and the intended phase that would result if the tap were perfectly located. When a specific delay is required, the tap having the closest actual delay to that required is selected and a phase correction is made depending upon the known data on the error determined.
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Inventors:
バーナード・ジエー・サボード
Application Number:
JP5181187A
Publication Date:
August 28, 1996
Filing Date:
March 05, 1987
Export Citation:
Assignee:
ヒューレット・パッカード・カンパニー
International Classes:
A61B8/00; G01S7/52; G01S7/526; G01S15/06; G01S15/89; G10K11/34; H03H17/08; (IPC1-7): G01S7/526; A61B8/00; G01S15/89; H03H17/08
Attorney, Agent or Firm:
上野 英夫