JPS5456886A - Ultrasonic video apparatus - Google Patents
Ultrasonic video apparatusInfo
- Publication number
- JPS5456886A JPS5456886A JP12298277A JP12298277A JPS5456886A JP S5456886 A JPS5456886 A JP S5456886A JP 12298277 A JP12298277 A JP 12298277A JP 12298277 A JP12298277 A JP 12298277A JP S5456886 A JPS5456886 A JP S5456886A
- Authority
- JP
- Japan
- Prior art keywords
- directional patterns
- signal processing
- waves
- output
- signals
- 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.)
- Pending
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
PURPOSE:To display accurate directional patterns even when reflected waves are short and even when the responsiveness of the display device is poor by expanding the amplitude or waveform of the reflected signals from the reflectors for measurement of directional patterns with time. CONSTITUTION:The reflected waves having been transmitted in the specified directions are received again in ultrasonic vibrators Tl thru TN and the resultant electric signals are again supplied to delay circuits Dl thru DN, whereby they are given the same delay tiems as those at the time of transmission. Hence, the directivities of the transmission waves and reveiving waves coincide and the reflection from the object in the specified direction is made distinct. The reflection signals are combined and the combined signal is amplified with a logarithmic amplifier 14 and is detected in a detector 15, after which it is subjected to signal processing in a signal processing circuit 16 so that the directional patterns may be displayed. On the other hand, the output of a scanning control circuit 13 is supplied to a D A converter 17 and a saw tooth wave generating circuit 18. In the case of displaying the directional patterns, the output of the DA converter 17 and the output of the signal processing circuit 16 are respectively connected to the X-, Y-axis input terminals of a display device 19'.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12298277A JPS5456886A (en) | 1977-10-15 | 1977-10-15 | Ultrasonic video apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12298277A JPS5456886A (en) | 1977-10-15 | 1977-10-15 | Ultrasonic video apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5456886A true JPS5456886A (en) | 1979-05-08 |
Family
ID=14849365
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12298277A Pending JPS5456886A (en) | 1977-10-15 | 1977-10-15 | Ultrasonic video apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5456886A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0157401A2 (en) * | 1984-04-02 | 1985-10-09 | Aloka Co. Ltd. | Ultrasonic doppler diagnostic device |
-
1977
- 1977-10-15 JP JP12298277A patent/JPS5456886A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0157401A2 (en) * | 1984-04-02 | 1985-10-09 | Aloka Co. Ltd. | Ultrasonic doppler diagnostic device |
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