Method and means for generating time gain compensation control signal for use in ultrasonic scanner and the like
US4356731A · kind A · utility
28Cited by
3References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 3, 1980 |
| Grant date | Nov 2, 1982 |
| Priority date | — |
| Expiry date | Nov 3, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S73/90
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Time gain compensation is provided in an ultrasonic scanner by storing a digital code in memory representing the desired signal gain for intervals of time during the reflected wave. Gain compensation due to transducer parameter can be provided in digital form in a separate memory, and the outputs of the two memories are combined and applied to a digital to analog converter. The resulting analog control signal is preferably filtered and then applied as a control signal to a gain control amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.