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Patent Searching and Data


Title:
ULTRASONIC SCANNING APPARATUS
Document Type and Number:
Japanese Patent JPS62291584
Kind Code:
A
Abstract:

PURPOSE: To obtain a wide range of a diagnostic image, by providing a circuit for selecting vibrators simultaneously energizing from a large number of vibrators of an array on the basis of a control signal.

CONSTITUTION: A transmission address signal TAD is decoded by an address setting circuit 2 in the timing of the front edge of the pulse PS generated from a pulse generating circuit 1 to generate a control signal. This signal is supplied to transmission control circuits 3, 4 and a transmission stop signal generating circuit 5, and a transmission control signal and a transmission stop signal are outputted. A delay signal is generated from a delay time generating circuit 6 in the timing of the rear edge of the pulse PS and the delay times of (m) pieces of vibrators simultaneously energizing are set on the basis of a probe code signal PCD by a delay time selection circuit 7. The transmission signal of the delay time selection circuit 7 is inputted to a transmission stop selection circuit 8 and only places desired to stop the transmission of the signals among (m) signals are turned OFF. The transmission signal from the circuit 8 is inputted to transmission matrix circuits 9, 10 and (m) pieces of vibrators are selected from all of (n) pieces of vibrators in an array 11 by the circuits 9, 10 and processed by a receiving circuit 12 through the circuit 10.


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Inventors:
HANAMIYA IKUO
Application Number:
JP13478986A
Publication Date:
December 18, 1987
Filing Date:
June 12, 1986
Export Citation:
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Assignee:
FUJI ELECTRIC CO LTD
International Classes:
A61B8/00; G01S7/52; G01S7/523; (IPC1-7): A61B8/00; G01S7/52
Attorney, Agent or Firm:
Yoshikazu Tani