JPS5450348A - Ultrasonic hologray device of digital type - Google Patents
Ultrasonic hologray device of digital typeInfo
- 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
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
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) |
-
1977
- 1977-09-28 JP JP11561977A patent/JPS5953555B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5953555B2 (en) | 1984-12-25 |
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