Real-time digital quadrature demodulation method and device for ultrasonic imaging system
US8179997B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2010 |
| Grant date | May 15, 2012 |
| Priority date | — |
| Expiry date | Dec 1, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D3/007
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A real-time digital quadrature demodulation method and device for the ultrasonic imaging system are disclosed in this invention. In addition to a multiplying step and a filtering step, the method further comprises a sine and cosine table generating step for generating the sine and cosine table in real time, and a filter parameter generating step for generating corresponding filter parameters in real time to filter signals from the multipliers. The device comprises two multipliers, two filters, a sine and cosine table generating module, a filter parameter generating module, and two parameter memories. The real-time digital quadrature demodulation method and device for the ultrasonic imaging system according to the invention are capable of effectively saving the storage resource, and are easily controllable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.