Process and device for focusing acoustic waves

Details Process and device for focusing acoustic waves Process and device for focusing acoustic waves

2005-12-20

2005-12-20

Mei, Xu (Department: 2644)

Electrical audio signal processing systems and devices

One-way audio signal program distribution

C367S138000

Reexamination Certificate

active

06978028

ABSTRACT:
After emission of an acoustic pulse, having a first duration, from a given location, acoustic signals coming from the location are gathered through a multi-scattering medium on an array of transducers and recorded, for a second duration greater by at least one order of magnitude than the first duration. Return signals obtained by temporal inversion and amplification of the signals gathered during the second duration are emitted back from said transducers toward the multiscattering medium in order to focus acoustic energy to the location while providing temporal compression of the focussed acoustic energy.

REFERENCES:
patent: 4112411 (1978-09-01), Alais et al.
patent: 4882714 (1989-11-01), Tanigawa
patent: 5092336 (1992-03-01), Fink
patent: 5267320 (1993-11-01), Fukumizu
patent: 5327496 (1994-07-01), Russell et al.
patent: 5428999 (1995-07-01), Fink
patent: 5431053 (1995-07-01), Fink
patent: 5438624 (1995-08-01), Lewiner et al.
patent: 5699437 (1997-12-01), Finn
patent: 5745580 (1998-04-01), Southward et al.
patent: 5834647 (1998-11-01), Gaudriot et al.
patent: 5910993 (1999-06-01), Aoki et al.
patent: 5963651 (1999-10-01), Van Veen et al.
patent: 5978489 (1999-11-01), Wan
patent: 6161434 (2000-12-01), Fink et al.
patent: 6198829 (2001-03-01), Fink et al.
patent: 6449566 (2002-09-01), Oeschger
patent: 6490469 (2002-12-01), Candy
patent: 6671227 (2003-12-01), Gilbert et al.
patent: 6687188 (2004-02-01), Yang
patent: 6755083 (2004-06-01), Berryman
patent: WO 94/24662 (1994-10-01), None
Berkhout et al., “Acoustic Control by Wave Field Synthesis,”The Journal of the Acoustical Society of America5:2764-2778, May 1993.
Fink et al., “Phase Aberration Correction with Ultrasonic Time Reversal Mirrors,”Ultrasonics Symposium, pp. 1629-1638, Jan. 1, 1994.
Prada et al., “The Iterative Time Reversal Mirror: A Solution to Self-Focusing in the Pulse Echo Mode,”The Journal of the Acoustical Society of America2(1):1119-1129, Aug. 1991.
Fink, “Time Reversal of Ultrasonic Fields Part I: Basic Principles,”IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control5:555-566, Sep. 1992.
Dowling, “Phase-Conjugate Array Focusing in a Moving Medium,”The Journal of the Acoustical Society of America3:1716-1718, Sep. 1993.
Dowling et al., “Narrow-Band Performance of Phase-Conjugate Arrays in Dynamic Random Media,”Acoustical Society of America, Applied Physics Laboratory, College of Ocean and Fishery Sciences, University of Washington, Seattle, WA 98105, pp. 3257-3277, 1992.

Affiliated with

Also associated with

Rating

Process and device for focusing acoustic waves does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process and device for focusing acoustic waves, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process and device for focusing acoustic waves will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3497763