Increasing dynamic range with a barrel shifter
US5529071A · kind A · utility
1Cited by
1References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 22, 1994 |
| Grant date | Jun 25, 1996 |
| Priority date | — |
| Expiry date | Nov 22, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/52033
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for increasing dynamic range of ultrasound imaging signals uses a barrel shifter. The barrel shifter shifts large bit two's complement input data into a standard size bit two's complement output. The method, then, comprises the steps of reducing a large data bus to a smaller data bus, and dynamically changing the amount of reduction. The bus reduction is achieved using a barrel shifter. Since time gain compensation (TGC), used to compensate for diminishing echo strength, increases with the depth of the signal, the amount of shift is directly related to the TGC value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.