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Class Information
Number: 367/122
Name: Communications, electrical: acoustic wave systems and devices > Distance or direction finding > With beam steering, scanning, or focussing > By electrical means > Transducer switching or gating
Description: Subject matter wherein the directional characteristics are varied by selectively or repetitively opening and closing the electrical signal path from the transducer.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8390514 Detection and geolocation of transient signals received by multi-beamforming antenna Mar. 5, 2013
7498976 System and method for passively estimating angle and range of a source using signal samples collected simultaneously from a multi-aperture antenna Mar. 3, 2009
6836243 System and method for processing a signal being emitted from a target signal source into a noisy environment Dec. 28, 2004
6540677 Ultrasound transceiver system for remote operation through a minimal number of connecting wires Apr. 1, 2003
6310832 Interpolated beamforming tracker Oct. 30, 2001
6292431 Marine seismic cable termination Sep. 18, 2001
6198693 System and method for finding the direction of a wave source using an array of sensors Mar. 6, 2001
6181643 Interferometer with a single projector array and a single receiver array Jan. 30, 2001
6122602 Method and arrangement for electromagnetic wave distance measurement by the pulse transit time method Sep. 19, 2000
6046961 Multi-layer tiled array Apr. 4, 2000
5490219 Noise canceling microphone with visual feedback Feb. 6, 1996
4991147 Preformed beam tracker Feb. 5, 1991
4985874 Solid state sequencing switch Jan. 15, 1991
4970703 Switched capacitor waveform processing circuit Nov. 13, 1990
4969132 Delay quantization technique to reduce steering errors in digital beamformers Nov. 6, 1990
4939701 Method and apparatus for error reduction when measuring movement in space of test points by means of ultrasonic signals Jul. 3, 1990
4914642 Remote sonic location system Apr. 3, 1990
4679176 Ultrasonic receiving apparatus Jul. 7, 1987
4567766 Piezoelectric ultrasonic apparatus and method for determining the distance from a predetermined point to a target Feb. 4, 1986
4559605 Method and apparatus for random array beamforming Dec. 17, 1985
4509151 Marine acoustic analysis system and method Apr. 2, 1985
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
4433396 Sonar receivers Feb. 21, 1984
4425634 Detection system Jan. 10, 1984
4420825 Element-sited beamformer Dec. 13, 1983
4414654 Thinned array transducer for sonar Nov. 8, 1983
4413332 Scanning beamformer for a very high resolution circular arc sonar Nov. 1, 1983
4412316 Ultrasonic transducer arrangement Oct. 25, 1983
4359767 Ultrasonic array Nov. 16, 1982
4333170 Acoustical detection and tracking system Jun. 1, 1982
4287580 Miniaturized scan within a pulse sonar Sep. 1, 1981
4275461 Parallel digital beam-forming system Jun. 23, 1981
4274148 Digital time-delay beamformer for sonar systems Jun. 16, 1981
4271490 Ultrasonic detection system Jun. 2, 1981
4247900 Signal combiner with permuted addressing Jan. 27, 1981
4233678 Serial phase shift beamformer using charge transfer devices Nov. 11, 1980
4207621 Electrically steerable sonar system Jun. 10, 1980
4203162 Electrically steerable spherical hydrophone array May. 13, 1980
4202050 Multi-angular sector sound transmitting and receiving system May. 6, 1980
4180792 Transmit-receive transducer array and ultrasonic imaging system Dec. 25, 1979
4173008 Method and apparatus for passive detection of marine objects Oct. 30, 1979
4166999 High resolution phase shifter beamformer for a cylindrical array Sep. 4, 1979
4143351 Sonic direction finder Mar. 6, 1979
4107685 Beam forming system Aug. 15, 1978
4056715 Device for forming channels using detectors spaced out on a circular base Nov. 1, 1977
4054873 Device for forming channels Oct. 18, 1977
4042930 Device for forming channels using detectors spaced out on a circular base Aug. 16, 1977
4014023 Beam former utilizing geometric sampling Mar. 22, 1977
4003016 Digital beamforming system Jan. 11, 1977

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