Delay coefficient generator for accumulators
US4949259A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 1989 |
| Grant date | Aug 14, 1990 |
| Priority date | — |
| Expiry date | Apr 11, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K11/346
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Apparatus for calculating the delay coefficients to be used for the transducer of a linear array at successive focal points along each radial line of a sector along which ultrasonic pulses are transmitted comprising a plurality of clocked accumulators connected in series, the accumulators being preloaded with appropriate combination of the coefficients of the successive terms of a series expressing an approximation of the formula, D=R-.sqroot.(X-Xo).sup.2 +Yo.sup.2 where R is the distance of a focal point from a given point in the sector, X is the number of the accumulator from the origin and Xo, Yo are the coordinates of the focal point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.