Coded aperture ultrasound detector
AssigneeTechnion Research & Development Foundation Limited
InventorsAmir Rozental, Evgeny Hahamovich
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Abstract
An ultrasound detection device comprising: an ultrasound receiver configured to generate a signal indicative of a pressure of ultrasound that impinges on the receiver; and a coded mask comprising an ultrasound-blocking material perforated by an array of a plurality of apertures, the apertures arranged such that when the coded mask is placed over the receiver between the receiver and a source of ultrasound in a predetermined lateral position, the ultrasound is transmitted from the ultrasound source to the receiver via a known unique pattern of active apertures of the plurality of apertures such that the signal that is generated by the receiver is a multiplexed signal.
Claims18
An ultrasound detection device comprising:
- an ultrasound receiver configured to generate a signal indicative of a pressure of ultrasound that impinges on the receiver;
- and
- a coded mask comprised of an ultrasound-blocking material perforated by an array of a plurality of apertures,
- wherein said coded mask comprises a plurality of mask elements, selected from (i) elements comprising an aperture of the plurality of apertures, via which ultrasound is transmitted, and (ii) elements that are opaque to ultrasound, and
- wherein the apertures are arranged such that when the coded mask is placed over the receiver between the receiver and a source of ultrasound in a predetermined lateral position of a plurality of predetermined lateral positions, the ultrasound is transmitted from the ultrasound source to the receiver via a known unique pattern of active apertures of the plurality of apertures, said pattern is unique to the predetermined lateral position, such that the signal that is generated by the receiver is a multiplexed signal.
An ultrasound detection method comprising:
- placing a coded mask relative to an ultrasound receiver in a predetermined lateral position, the coded mask comprised of an ultrasound blocking material perforated by an array of a plurality of apertures,
- wherein said coded mask comprises a plurality of mask elements, selected from (i) elements comprising an aperture of the plurality of apertures, via which ultrasound is transmitted, and (ii) elements that are opaque to ultrasound, and
- wherein the apertures are arranged such that the ultrasound is transmitted from an ultrasound source to the receiver via a unique pattern of active apertures of the plurality of apertures, said pattern is unique to the predetermined lateral position;
- operating the ultrasound receiver to acquire a multiplexed signal;
- and
- processing the acquired multiplexed signals to recover a signal of interest.
Dependencies are inferred from the claim text.