Ultrasonic receiving apparatus
US5217017A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 26, 1992 |
| Grant date | Jun 8, 1993 |
| Priority date | — |
| Expiry date | Jun 26, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/52046
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is an ultrasonic receiving apparatus for use with an ultrasonic diagnosis system, the apparatus containing digital delaying means and/or digital adding means. The delaying means provides delays of sufficiently high accuracy using a clock signal of a reasonably high repeat frequency on a reasonable scale of circuit construction, while the adding means allows for larger probe aperture. PA0 (1) The delaying means has delay circuits each offering a delay in units of the clock signal cycle, and infinitesimal delaying circuits each multiplying two signals derived from a single reception signal, one of the two signals being delayed relative to the other before the two are added. PA0 (2) The adding means includes a sequential addition circuit having numerous adders and latch circuits connected alternately in cascade fashion, and numerous delay circuits for delaying each of reception signals by an integer multiple of the clock signal cycle for distribution to the adders so that the reception signals will be added after being input simultaneously to the adding means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.