JPS6468242A - Rotation control apparatus of ultrasonic endoscope - Google Patents
Rotation control apparatus of ultrasonic endoscopeInfo
- Publication number
- JPS6468242A JPS6468242A JP22721087A JP22721087A JPS6468242A JP S6468242 A JPS6468242 A JP S6468242A JP 22721087 A JP22721087 A JP 22721087A JP 22721087 A JP22721087 A JP 22721087A JP S6468242 A JPS6468242 A JP S6468242A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- ultrasonic transducer
- phase
- transmission timing
- ultrasonic
- 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
- Ultra Sonic Daignosis Equipment (AREA)
Abstract
PURPOSE:To miniaturize the ultrasonic operating part of an ultrasonic endoscope performing scanning while rotating an ultrasonic transducer, by making the transmission timing of the ultrasonic transducer synchronous to the rotation of a motor by a phase comparing means. CONSTITUTION:An ultrasonic transducer 41 is rotationally driven by a motor 46 through a flexible shaft 42 and the rotary position of the motor 46 is detected by a photoreflector 51 and the output thereof is inputted to a phase comparator 56. This phase comparator 56 compares the phase of the output signal of the photoreflector 51 with the phase of the transmission timing of the ultrasonic transducer 41 from a transmission timing generating circuit 53. The output of the phase comparator 56 is fed back to the motor 46 through a low-pass filter 57 and an amplifier 58 and, by this method, the rotation of the motor 56 is made synchronous to the transmission timing of the ultrasonic transducer 41.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22721087A JPS6468242A (en) | 1987-09-09 | 1987-09-09 | Rotation control apparatus of ultrasonic endoscope |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22721087A JPS6468242A (en) | 1987-09-09 | 1987-09-09 | Rotation control apparatus of ultrasonic endoscope |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6468242A true JPS6468242A (en) | 1989-03-14 |
Family
ID=16857220
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22721087A Pending JPS6468242A (en) | 1987-09-09 | 1987-09-09 | Rotation control apparatus of ultrasonic endoscope |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6468242A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009261936A (en) * | 2008-04-21 | 2009-11-12 | General Electric Co <Ge> | Method and system for ultrasonic imaging using transducer arrays |
-
1987
- 1987-09-09 JP JP22721087A patent/JPS6468242A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009261936A (en) * | 2008-04-21 | 2009-11-12 | General Electric Co <Ge> | Method and system for ultrasonic imaging using transducer arrays |
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