JPS5450348A - Ultrasonic hologray device of digital type - Google Patents

Ultrasonic hologray device of digital type

Info

Publication number
JPS5450348A
JPS5450348A JP11561977A JP11561977A JPS5450348A JP S5450348 A JPS5450348 A JP S5450348A JP 11561977 A JP11561977 A JP 11561977A JP 11561977 A JP11561977 A JP 11561977A JP S5450348 A JPS5450348 A JP S5450348A
Authority
JP
Japan
Prior art keywords
pulses
received
ultrasonic
detector
coincidence
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP11561977A
Other languages
Japanese (ja)
Other versions
JPS5953555B2 (en
Inventor
Fuminobu Takahashi
Takahiro Kanamori
Kazumichi Suzuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP11561977A priority Critical patent/JPS5953555B2/en
Priority to GB7827559A priority patent/GB2000291B/en
Priority to US05/917,600 priority patent/US4222273A/en
Priority to CA306,033A priority patent/CA1103489A/en
Priority to FR7818662A priority patent/FR2425099A1/en
Priority to DE2827489A priority patent/DE2827489C2/en
Publication of JPS5450348A publication Critical patent/JPS5450348A/en
Publication of JPS5953555B2 publication Critical patent/JPS5953555B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Holo Graphy (AREA)

Abstract

PURPOSE: To improve the clearness of a hologram reproduced image by forming the hologram in accordance with the coincidence signals upon reception of ultrasonic pulses and the amplitude information of the received pulses.
CONSTITUTION: The reflected ultrasonic pulses generated by scanning an object in two rectangular directions with such ultrasonic pulses by a spike generator 15 and a locator 1 as are transmitted in synchronism with the two clocks of a twin clock pulses generator 13 are received by the locator 1. By the application of the received pulses, the digital values corresponding to the amplitude of the received pulses are held in a detector 20. On the other hand, a waveform shaper 18 applies the detected pulses to a coincidence detector 19 in response to the received pulses higher than a threshold value. The detector 19 feeds the coincidence signals as addition signals to an operator 21 through a gate which is opened during the clock period
COPYRIGHT: (C)1979,JPO&Japio
JP11561977A 1977-06-22 1977-09-28 Digital ultrasonic holography device Expired JPS5953555B2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP11561977A JPS5953555B2 (en) 1977-09-28 1977-09-28 Digital ultrasonic holography device
GB7827559A GB2000291B (en) 1977-06-22 1978-06-21 Digital type ultrasonic holography apparatus
US05/917,600 US4222273A (en) 1977-06-22 1978-06-21 Digital type ultrasonic holography apparatus
CA306,033A CA1103489A (en) 1977-06-22 1978-06-22 Digital type ultrasonic holography apparatus
FR7818662A FR2425099A1 (en) 1977-06-22 1978-06-22 DIGITAL-TYPE ULTRASONIC HOLOGRAPHY DEVICE
DE2827489A DE2827489C2 (en) 1977-06-22 1978-06-22 Digital ultrasonic holographic device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11561977A JPS5953555B2 (en) 1977-09-28 1977-09-28 Digital ultrasonic holography device

Publications (2)

Publication Number Publication Date
JPS5450348A true JPS5450348A (en) 1979-04-20
JPS5953555B2 JPS5953555B2 (en) 1984-12-25

Family

ID=14667130

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11561977A Expired JPS5953555B2 (en) 1977-06-22 1977-09-28 Digital ultrasonic holography device

Country Status (1)

Country Link
JP (1) JPS5953555B2 (en)

Also Published As

Publication number Publication date
JPS5953555B2 (en) 1984-12-25

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