Method and means for generating time gain compensation control s

Details Method and means for generating time gain compensation control s Method and means for generating time gain compensation control s

1982-04-19

1984-06-05

Birmiel, Howard A.

Measuring and testing

Vibration

By mechanical waves

73599, 73900, 73602, 128660, G01N 2900, A61B 1000

Patent

active

044520859

ABSTRACT:
A time gain control (TGC) signal for a variable gain amplifier in an ultrasonic scanner is derived by determining the attenuation at many levels in the object under examination and then constructing the TGC signal based on the cumulative attenuation of an ultrasonic signal through the object. A zero crossing detector such as a Schmitt triggered monostable multivibrator receives a reflected ultrasonic wave signal and generates pulses which are counted during time intervals corresponding to a depth level in the object. By comparing the zero crossing density at one level to the zero crossing density at another level a measure of attenuation between the two levels is obtained.

REFERENCES:
patent: 3309914 (1967-03-01), Weighart
patent: 4016750 (1977-04-01), Green
patent: 4043181 (1977-08-01), Nigam
patent: 4228688 (1980-10-01), Sharpe
patent: 4356731 (1982-11-01), Mahony

Affiliated with

Also associated with

Rating

Method and means for generating time gain compensation control s does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and means for generating time gain compensation control s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and means for generating time gain compensation control s will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1491883