Amplitude insensitive delay lines in an accoustic imaging system

Details Amplitude insensitive delay lines in an accoustic imaging system Amplitude insensitive delay lines in an accoustic imaging system

1984-07-05

1986-12-30

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

128660, 328 55, H04N 718

Patent

active

046333088

ABSTRACT:
A delay circuit for providing signal delay within an acoustic imaging system is provided. Reflected acoustic signals are transformed into electrical signals and are used to reproduce images of objects. Delay lines along the electrical signal path are used to focus the images compensating for asynchronism of electrical signals caused by variations in the length of acoustic signal paths.

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patent: 4542746 (1985-09-01), Takamizawa
Jonathan Taft, "A Digital Delay Line, Implemented in VLSI", Abstract of Talk Given at MIT in Mar./Apr., 1983.
Heinz E. Kallmann, "Transversal Filters", Proceedings of the I.R.E., Jul. 1940, pp. 302-310.
Joseph F. Lutz, Synchronous Relay-Line Detector Provides Wideband Performance, Microwaves & RF, Nov. 1982, 71, 74, 75, 79.
H. Edward Karrer & Arthur M. Dickey, "Ultrasound Imaging: an Overview", Hewlett-Packard Journal, Oct. 1983, pp. 3-6.
EDN, Jun. 14, 1984, "Data Converters", pp. 119-124.

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