Measuring and testing – Vibration – By mechanical waves
Patent
1978-05-16
1980-06-03
Ruehl, Charels A.
Measuring and testing
Vibration
By mechanical waves
73631, 73900, G01N 2900
Patent
active
042055555
ABSTRACT:
An ultrasonic diagnostic apparatus is provided comprising a clock pulse generator, and electro-acoustic transducer which responds to the clock pulse from the clock pulse generator to produce an ultrasonic wave, a receiving circuit for receiving the electrical signal from the electro-acoustic transducer, a variable gain amplifier for amplifying the output signal from the receiving circuit, a display device for displaying information corresponding to the signal from the amplifier, and a gain control circuit for controlling the gain of the variable gain amplifier.
The gain control circuit includes an integrating circuit, a signal generator for providing a signal with a variable level to the integrating circuit, a switching circuit coupled in parallel with the integrating circuit, a monostable multivibrator which responds to the clock pulse from the clock pulse generator to render the switching circuit conductive only during a given time period, a reference level signal generator, and an adder circuit which sums the output signals from the integrating circuit and the reference level signal generator and applies the summed signal to the gain control terminal of the variable gain amplifier.
REFERENCES:
patent: 3287962 (1966-11-01), Relyea et al.
patent: 3348410 (1967-10-01), Henry
patent: 3605504 (1971-09-01), Kummer, Jr. et al.
patent: 4016862 (1977-04-01), Lancee et al.
patent: 4140107 (1979-02-01), Lancee et al.
Ruehl Charels A.
Tokyo Shibaura Electric Co. Ltd.
LandOfFree
Ultrasonic diagnostic apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ultrasonic diagnostic apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultrasonic diagnostic apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-711353