Ultrasonic examination and imaging
US4351038A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 30, 1980 |
| Grant date | Sep 21, 1982 |
| Priority date | — |
| Expiry date | Dec 30, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S15/8918
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An ultrasonic imaging device comprises transducers distributed along a line and operable at a frequency f. A generator delivers electrical pulses to time delay means which provide, in response to each electrical pulse, a plurality of low level pulses delayed by increased time delays in a number lower than the number of transducers. The distribution of the time delays between the transducers is stored in memory means and corresponds to focusing at a point located at a predetermined distance from the line. A plurality of amplifiers are each associated with an individual one of the transducers and deliver an energizing pulse to the associated transducer in response to a particular one of the low level pulses appearing on an associated channel of a bus line which is selected by the memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.