Delay coefficient generator for accumulators

Details Delay coefficient generator for accumulators Delay coefficient generator for accumulators

1989-04-11

1990-08-14

Jablon, Clark A.

Boots, shoes, and leggings

73626, 73628, G01N 2900

Patent

active

049492594

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.

REFERENCES:
patent: 4140022 (1979-02-01), Maslak
patent: 4309906 (1982-01-01), Northeved et al.
patent: 4472973 (1984-09-01), Sugai et al.
patent: 4487073 (1984-12-01), Sumino
patent: 4733562 (1988-03-01), Saugeon

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