Communications – electrical: acoustic wave systems and devices – Echo systems – Parametric sonar
Reexamination Certificate
2008-01-15
2008-01-15
Lobo, Ian J. (Department: 3662)
Communications, electrical: acoustic wave systems and devices
Echo systems
Parametric sonar
C073S620000
Reexamination Certificate
active
07319639
ABSTRACT:
The present invention is directed towards an acoustic concealed item detector and related methods for detection using acoustics. In an illustrative embodiment, a multi-frequency ultrasonic wave generator generates in a gaseous medium at least first and second ultrasonic waves. The multi-frequency ultrasonic wave generator is arranged such that in operation, the first ultrasonic wave and the second ultrasonic wave mix in a prescribed mixing zone to produce a difference-frequency acoustic wave. A receiver sensor detects the difference-frequency acoustic wave and produces corresponding electromagnetic signals. The electromagnetic signals are processed by a system processor and signals indicative of concealed items are identified. Preferably the ultrasonic waves are focused to a small prescribed mixing zone. Parametric and multi-transducer embodiments are disclosed.
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Acoustic Sensors Product Description http://www.jaycor.com/jaycor—main/web-content/eme—sens—acoustic.html.
Acoustic Sensors Applications http://www.jaycor.com/jaycor—main/web-content/eme—sens—acoustic—apps.html.
Acoustic Sensors Technical Specifications http://www.jaycor.com/jaycor—main/web-content/eme—sens—acoustic—tech.html.
Ultrasound Sensor for Remote Imaging of Concealed Weapons http://www.jaycor.com/jaycor—main/web-content/eme—sens—ultra.html.
Lobo Ian J.
Lumen Intellectual Property Services Inc.
Luna Innovations Incorporated
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