JPS5676067A - Ultrasonic wave receiving circuit - Google Patents
Ultrasonic wave receiving circuitInfo
- Publication number
- JPS5676067A JPS5676067A JP15404979A JP15404979A JPS5676067A JP S5676067 A JPS5676067 A JP S5676067A JP 15404979 A JP15404979 A JP 15404979A JP 15404979 A JP15404979 A JP 15404979A JP S5676067 A JPS5676067 A JP S5676067A
- Authority
- JP
- Japan
- Prior art keywords
- delay
- circuit
- switch
- delay time
- change
- 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
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/26—Sound-focusing or directing, e.g. scanning
- G10K11/34—Sound-focusing or directing, e.g. scanning using electrical steering of transducer arrays, e.g. beam steering
- G10K11/341—Circuits therefor
- G10K11/346—Circuits therefor using phase variation
Abstract
PURPOSE:To enable the control of correct delay time and a beam focusing without deterioration a combined performance of the circuit by a constitution wherein an appropriate delay time is added to each of multiultrasonic receiving signals by means of a change-over switch, an adder, a fixed delay circuit and a variable delay circuit. CONSTITUTION:Receiving signals of ultrasonic vibrators 1-1-1-N arranged in an array type pass through a change-over switch 8, adders 3-0, 3-(N-1) and a switch 5 and are delivered to fixed delay lines 6-1-6-N and variable delay lines 7-1-7-N. Further, the output signal of a delay circuit 7 enters the adder 3 where a delay time is added and a connection is made so as to repeat siad procedures sequentially. When deflection angle theta is amall, the receiving signal passes only through the delay line 7 by means of the switch 5, and when the theta is large, it passes through also the fixed delay line 7 by means of the switch 5. A change-over switch 8 is selectively connected by a command from ROM etc. Thus, without deteriorating the combined performance of the circuit, a correct control of the delay time and a beam forcusing becomes feasible.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15404979A JPS5676067A (en) | 1979-11-27 | 1979-11-27 | Ultrasonic wave receiving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15404979A JPS5676067A (en) | 1979-11-27 | 1979-11-27 | Ultrasonic wave receiving circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5676067A true JPS5676067A (en) | 1981-06-23 |
Family
ID=15575789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15404979A Pending JPS5676067A (en) | 1979-11-27 | 1979-11-27 | Ultrasonic wave receiving circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5676067A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6111029A (en) * | 1984-06-25 | 1986-01-18 | 横河メディカルシステム株式会社 | Ultrasonic diagnostic apparatus |
| JPS6122847A (en) * | 1984-05-07 | 1986-01-31 | アクソン | Audible wave imaging apparatus |
-
1979
- 1979-11-27 JP JP15404979A patent/JPS5676067A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6122847A (en) * | 1984-05-07 | 1986-01-31 | アクソン | Audible wave imaging apparatus |
| JPH0318456B2 (en) * | 1984-05-07 | 1991-03-12 | Akuson | |
| JPS6111029A (en) * | 1984-06-25 | 1986-01-18 | 横河メディカルシステム株式会社 | Ultrasonic diagnostic apparatus |
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