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Class Information
Number: 367/123
Name: Communications, electrical: acoustic wave systems and devices > Distance or direction finding > With beam steering, scanning, or focussing > By electrical means > With phase shifter or delay means
Description: Subject matter wherein the electrical circuitry associated with the transducer includes means for changing the travel time of a signal from the input of the means to its output.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7391505 |
Range sensing system |
Jun. 24, 2008 |
| 7227813 |
Method and apparatus for forming multiple beams |
Jun. 5, 2007 |
| 7146014 |
MEMS directional sensor system |
Dec. 5, 2006 |
| 6912178 |
System and method for computing a location of an acoustic source |
Jun. 28, 2005 |
| 6868043 |
Beam broadening with maximum power in array transducers |
Mar. 15, 2005 |
| 6836243 |
System and method for processing a signal being emitted from a target signal source into a noisy environment |
Dec. 28, 2004 |
| 6445646 |
Signal processing method and apparatus, and sonar systems |
Sep. 3, 2002 |
| 6289327 |
Method and apparatus for determining and forming delayed waveforms for forming transmitting or receiving beams for an air acoustic system array of transmitting or receiving elements |
Sep. 11, 2001 |
| 6088299 |
Vertical hydrophone array |
Jul. 11, 2000 |
| 6002645 |
Self survey of random arrays |
Dec. 14, 1999 |
| 5905692 |
Digital ultrasound beamformer |
May. 18, 1999 |
| 5784336 |
Delay scheme and apparatus for focussing the transmission and reception of a summed ultrasonic beam |
Jul. 21, 1998 |
| 5680371 |
Broadband sonar method and apparatus for use with conventional sonar arrays |
Oct. 21, 1997 |
| 5657393 |
Beamed linear array microphone system |
Aug. 12, 1997 |
| 5582566 |
Range-finding system |
Dec. 10, 1996 |
| 5530681 |
Cascaded shift register beamformer |
Jun. 25, 1996 |
| 5444443 |
Sound source determining system |
Aug. 22, 1995 |
| 5345426 |
Delay interpolator for digital phased array ultrasound beamformers |
Sep. 6, 1994 |
| 5309409 |
Target detection system |
May. 3, 1994 |
| 5077704 |
3-D sonar image display |
Dec. 31, 1991 |
| 5058081 |
Method of formation of channels for a sonar, in particular for a towed-array sonar |
Oct. 15, 1991 |
| 5044462 |
Focused planar transducer |
Sep. 3, 1991 |
| 5034930 |
Passive ranging sonar system |
Jul. 23, 1991 |
| 4991147 |
Preformed beam tracker |
Feb. 5, 1991 |
| 4969132 |
Delay quantization technique to reduce steering errors in digital beamformers |
Nov. 6, 1990 |
| 4965776 |
Planar end-fire array |
Oct. 23, 1990 |
| 4862115 |
Optical beamformers |
Aug. 29, 1989 |
| 4841491 |
Ultrasonic beam former |
Jun. 20, 1989 |
| 4837754 |
Ultrasonic wave phase matching apparatus |
Jun. 6, 1989 |
| 4802227 |
Noise reduction processing arrangement for microphone arrays |
Jan. 31, 1989 |
| 4779242 |
Device for electronic focusing of ultrasonic waves |
Oct. 18, 1988 |
| 4752918 |
Electrio-acoustic transducers |
Jun. 21, 1988 |
| 4688045 |
Digital delay generator for sonar and radar beam formers |
Aug. 18, 1987 |
| 4679176 |
Ultrasonic receiving apparatus |
Jul. 7, 1987 |
| 4661938 |
Sonar apparatus |
Apr. 28, 1987 |
| 4661937 |
Sonar beam steering circuit |
Apr. 28, 1987 |
| 4644483 |
Apparatus for determining the transit time of ultrasonic pulses in a fluid |
Feb. 17, 1987 |
| 4604736 |
Digital device for the formation of sonar channels |
Aug. 5, 1986 |
| 4604697 |
Body imaging using vectorial addition of acoustic reflection to achieve effect of scanning beam continuously focused in range |
Aug. 5, 1986 |
| 4559642 |
Phased-array sound pickup apparatus |
Dec. 17, 1985 |
| 4525816 |
Sonar arrangements |
Jun. 25, 1985 |
| 4509152 |
Channel formation system for panoramic sonars |
Apr. 2, 1985 |
| 4503336 |
Beam former having variable delays between LED output signals |
Mar. 5, 1985 |
| 4480322 |
Passive underwater range measurement acoustic system |
Oct. 30, 1984 |
| 4460987 |
Variable focus sonar with curved array |
Jul. 17, 1984 |
| 4455630 |
Device for forming an image by means of ultrasound |
Jun. 19, 1984 |
| 4433397 |
Circuit arrangement for the formation and processing of group signals |
Feb. 21, 1984 |
| 4423494 |
Beam steerable sonar array |
Dec. 27, 1983 |
| 4420825 |
Element-sited beamformer |
Dec. 13, 1983 |
| 4413332 |
Scanning beamformer for a very high resolution circular arc sonar |
Nov. 1, 1983 |
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