Communications – electrical: acoustic wave systems and devices – Acoustic image conversion
Patent
1993-03-29
1994-11-22
Pihulic, Daniel T.
Communications, electrical: acoustic wave systems and devices
Acoustic image conversion
367 11, G03B 4206
Patent
active
053674960
ABSTRACT:
Apparatus for imaging an object underwater. A detector array of operationally independent transducers is deployed in a medium such as water. Each transducer generates an electrical signal across independent first and second electrodes corresponding to impinging acoustic energy. Each of the positions in the detector array is identified in sequence along with the identification of a corresponding pixel position or display position in a display structure. A first multiplexer connects to all the first electrodes and a second multiplexer connects to all the second electrodes to enable the identification circuit to select corresponding electrodes for each detector position. A single amplifier circuit couples the signals from the multiplexer to a circuit for controlling the illumination of a selected display position.
REFERENCES:
patent: 3979711 (1976-09-01), Maginness et al.
Buckingham, "Incoherent Imaging With Ambient Noise", Oceans 92: Mastering e Oceans Through Technology Proceedings; vol. 1, Oct. 26-29, 1992.
Buckingham et al., "Imaging the ocean with ambient noise", Nature, vol. 356, Mar. 26, 1992, pp. 327-329.
LeFee, "Method found to see by sound in ocean", San Diego Union-Tribune, Mar. 26, 1992, pp. B1 and B4.
Charette Rick H.
D'Addio Ray E.
Dussault Douglas G.
Sullivan Michael J.
Lall Prithvi C.
McGowan Michael J.
Oglo Michael F.
Pihulic Daniel T.
The United States of America as represented by the Secretary of
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