Ultrasonic wave diagnostic apparatus employing interpolated valu

Details Ultrasonic wave diagnostic apparatus employing interpolated valu Ultrasonic wave diagnostic apparatus employing interpolated valu

1987-07-06

1988-10-25

Jaworski, Francis J.

Surgery

Truss

Pad

73626, A61B 1000

Patent

active

047796227

ABSTRACT:
An ultrasonic wave diagnostic apparatus having an array of electro-acoustic transducer elements and respective channels for supplying drive signals to the electro-acoustic transducer elements and amplifying received echo signals from these elements, with the respective overall gains of the channels being controlled by corresponding values of weighting data. A set of mutually independent D/A converters, smaller in number than the number of electro-acoustic transducer elements, produce weighting data for respective ones of the channels that are spaced apart by a fixed number of channels. Respective interpolated values of weighting data for the remaining channels are derived by analog operations executed upon each of successive pairs of D/A converter outputs.

REFERENCES:
patent: 4016862 (1977-04-01), Lancee et al.
patent: 4031743 (1977-06-01), Kossoff et al.
patent: 4127034 (1978-11-01), Lederman et al.
patent: 4334432 (1982-06-01), Gill
patent: 4550606 (1985-11-01), Drost

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