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Class Information
Number: 367/97
Name: Communications, electrical: acoustic wave systems and devices > Echo systems > Returned signal used for control > Receiver system
Description: Subject matter in which the device is a portion of the acoustic wave receiver itself.

Sub-classes under this class:

Class Number Class Name Patents
367/98 Automatic gain or threshold control 149

Patents under this class:
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Patent Number Title Of Patent Date Issued
8422336 Operating method for an ultra-sound sensor Apr. 16, 2013
8390514 Detection and geolocation of transient signals received by multi-beamforming antenna Mar. 5, 2013
8264908 Method of detecting and compensating for precipitation in sodar systems Sep. 11, 2012
8068385 System and method for enhancing weak target signals for a sensor array Nov. 29, 2011
7907475 Obstacle detecting system for vehicle Mar. 15, 2011
7724175 Method for reducing interference signal influences on a high-frequency measurement device and high-frequency measurement device May. 25, 2010
6909397 Stabilizing motion in a radar detection system using ultrasonic radar range information Jun. 21, 2005
6850186 System for determining position and velocity of targets from signals scattered by the targets Feb. 1, 2005
6801474 Resampling sonar echo time series primarily for seabed sediment classification Oct. 5, 2004
6778467 Underwater sounding apparatus Aug. 17, 2004
6711094 Method and apparatus for active sonar detection enhancement Mar. 23, 2004
6549873 Position detecting device for hydraulic cylinder, and detecting method thereof Apr. 15, 2003
6490226 Ultrasonic sonar and method using transmission frequency different from reverberation frequency Dec. 3, 2002
6427532 Device for measuring a fill level of a liquid in a container Aug. 6, 2002
6288775 Lightwave distance measuring apparatus and method Sep. 11, 2001
6267042 Position detector for fluid cylinder Jul. 31, 2001
5805526 Echo detection doppler gate Sep. 8, 1998
5793704 Method and device for ultrasonic ranging Aug. 11, 1998
5771204 Apparatus and method for measuring relative phase of signals in a multiple-echo system Jun. 23, 1998
5635662 Method and apparatus for avoiding detection by a threat projectile Jun. 3, 1997
5540098 Transfer device Jul. 30, 1996
5511041 Process for setting the transmission frequency of a distance measuring instrument operating according to the echo-sounding principle Apr. 23, 1996
5508974 Method and device for ultrasonic distance measuring Apr. 16, 1996
5402118 Method and apparatus for measuring traffic flow Mar. 28, 1995
5392034 Vehicle classification system using profile Feb. 21, 1995
5107271 Target track assessment Apr. 21, 1992
5068832 Binaural ultrasound detector and imager Nov. 26, 1991
4989186 Target tracking sonar with false target detector Jan. 29, 1991
4961174 High data rate continuous wave towed sonar Oct. 2, 1990
4959817 Intruder target monitoring sonar alarm system Sep. 25, 1990
4954999 Double phase-lock-loop sonar Sep. 4, 1990
4860266 Method for operating a transmitting/receiving circuit and a circuit utilizing the method Aug. 22, 1989
4845685 Digital phase-locked loop Jul. 4, 1989
4802148 Side-looking sonar apparatus Jan. 31, 1989
4789941 Computerized vehicle classification system Dec. 6, 1988
4712200 Device for processing modulated signals received by a lateral sonar system Dec. 8, 1987
4677599 Ultra-sonic distance measuring apparatus and method Jun. 30, 1987
4674069 System for collecting and processing data relating to moving bodies Jun. 16, 1987
4586172 Adaptable filtering device and method for filtering sonar signals to remove reverberation signals due to vehicle speed and trim and the sea surface and sea bottom Apr. 29, 1986
4549286 Interference suppression unit for a sonar apparatus Oct. 22, 1985
4521107 Apparatus for measuring distances by measuring time of travel of a measuring light pulse Jun. 4, 1985
4464738 Sonar distance sensing apparatus Aug. 7, 1984
4425635 Fish sonar Jan. 10, 1984
4401987 Ranging system having reduced recognition jitter Aug. 30, 1983
4386322 Method and apparatus for producing a trigger signal May. 31, 1983
4380807 Echo recognition system Apr. 19, 1983
4376990 Device for transit time measurement and method Mar. 15, 1983
4369508 Sonar having signal amplitude differentiation and noise suppression Jan. 18, 1983
4328568 Dual mode sonar system May. 4, 1982
4322826 Method and system for distinguishing between displacing targets and a surface of water Mar. 30, 1982

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