University of Michigan

Q-dot, Inc.

Other

Marshall K Quick

Charles S Desilets

Thomas E Linnenbrink

Matthew N O'Donnell

Steven R Freeman

Marc A Morin

Timothy G O'Shaughnessy

Lyle Whelchel

R Carver Anderson

Thomas K Bohley

A method and apparatus are provided for reducing distortion in a dynamically delayed digital sample stream of an imaging system. The method includes the steps of delta-sigma modulating an input analog signal of the imaging system at a frequency above the Nyquist frequency of the input analog signal to generate a digital sample stream and changing a length of the sample stream to delay a portion of the sample stream while maintaining synchronism between a delta-sigma modulator and a demodulator of the system.

Beamformed ultrasonic imager with delta-sigma feedback control

An acoustic/video processing stack of a plurality of substantially identical acoustic/video processing stacks is provided for attachment to a processing stack backplane and which together generate a VGA signal for display of a three-dimensional acoustic image. The acoustic/video processing stack includes a two-dimensional array of transducer elements, a companion chip block coupled to and adapted to transceive acoustic signals under a time-division multiplexed format through the transducer elements and to provide a portion of the VGA signal together generated by the plurality of acoustic/video processing stacks and a backing block disposed between the two-dimensional array and companion chip block and adapted to acoustically isolate the two-dimensional transducer array from the companion chip block, said companion chip block and backing block being of a size and diameter substantially the same as the two-dimensional transducer array.

Acoustic lens-based swimmer's sonar

Growing community of inventors

Colorado Springs, CO, United States of America

Marshall K Quick