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Class Information
Number: 367/121
Name: Communications, electrical: acoustic wave systems and devices > Distance or direction finding > With beam steering, scanning, or focussing > By electrical means
Description: Subject matter wherein the directional characteristics are varied or concentrated by varying some functional characteristic of the electrical circuitry associated with the transducer.










Sub-classes under this class:

Class Number Class Name Patents
367/122 Transducer switching or gating 53
367/123 With phase shifter or delay means 95


Patents under this class:

Patent Number Title Of Patent Date Issued
8693703 Method of combining at least two audio signals and a microphone system comprising at least two microphones Apr. 8, 2014
8659976 Electronic baffling of sensor arrays Feb. 25, 2014
8479059 Radio communication device, radio communication system, program and radio communication method Jul. 2, 2013
8290178 Sound source characteristic determining device Oct. 16, 2012
7471798 Microphone array having a second order directional pattern Dec. 30, 2008
7289586 Signal processing apparatus and method Oct. 30, 2007
7109918 Nonlinear beam forming and beam shaping aperture system Sep. 19, 2006
6741713 Directional hearing device May. 25, 2004
6540677 Ultrasound transceiver system for remote operation through a minimal number of connecting wires Apr. 1, 2003
6192134 System and method for a monolithic directional microphone array Feb. 20, 2001
6192006 Device for and a method of determining the angle of incidence of a received signal and a scanning sonar Feb. 20, 2001
6154552 Hybrid adaptive beamformer Nov. 28, 2000
6052335 Multiple-frequency sonar system Apr. 18, 2000
6049607 Interference canceling method and apparatus Apr. 11, 2000
5825898 System and method for adaptive interference cancelling Oct. 20, 1998
5627799 Beamformer using coefficient restrained adaptive filters for detecting interference signals May. 6, 1997
5504716 Passive sonar transducer arrangement Apr. 2, 1996
5457662 Process and device for locating noise emitters with an antenna consisting of passive acoustic buoys Oct. 10, 1995
5253221 Null steering device Oct. 12, 1993
5047993 Detection and classification for multi-beam sonar systems Sep. 10, 1991
4980870 Array compensating beamformer Dec. 25, 1990
4970464 Linear position-displacement magnetostrictive transducer having multiple cylindrical electromagnets for generating flux, each electromagnet having a centered passageway for relative travel alo Nov. 13, 1990
4758999 Systolic architectures for sonar processing Jul. 19, 1988
4741038 Sound location arrangement Apr. 26, 1988
4530076 Frequency domain non-linear signal processing apparatus and method for discrimination against non-Gaussian interference Jul. 16, 1985
4350917 Frequency-controlled scanning of ultrasonic beams Sep. 21, 1982
4280203 Sonar beam forming utilizing the chirp Z-transform Jul. 21, 1981
4254417 Beamformer for arrays with rotational symmetry Mar. 3, 1981
4245333 Beamforming utilizing a surface acoustic wave device Jan. 13, 1981
4244037 Two dimensional imaging using surface wave acoustic devices Jan. 6, 1981
4228531 Automatic underwater null steering Oct. 14, 1980
4187490 Range determining system Feb. 5, 1980
4179682 Tilt compensation for acoustic transducing system Dec. 18, 1979
4176339 Propagation sampled acoustic line array Nov. 27, 1979
4158843 Automatic direction finder antenna preamplifier processor Jun. 19, 1979
4112411 Device for echography by means of focussed ultrasonic beams Sep. 5, 1978











 
 
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