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Class Information
Number: 367/98
Name: Communications, electrical: acoustic wave systems and devices > Echo systems > Returned signal used for control > Receiver system > Automatic gain or threshold control
Description: Subject matter in which the output signal level of the acoustic wave receiver or the minimum response level of some part of the receiver is controlled by the reflected wave.

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8681028 Analog to digital converter provided with pulse delay circuit Mar. 25, 2014
8670289 Distance sensor and method for determining a distance Mar. 11, 2014
8665668 Ultrasonic distance measurement controller Mar. 4, 2014
8599645 Sonar scanner Dec. 3, 2013
8483012 Controlling method for ultra-sound sensor Jul. 9, 2013
8437221 Terminal and method and system for automatically controlling terminal May. 7, 2013
8390514 Detection and geolocation of transient signals received by multi-beamforming antenna Mar. 5, 2013
8326582 Acoustic-based rotating component analysis Dec. 4, 2012
8300500 Underwater detection device Oct. 30, 2012
8295125 Sonar scanner Oct. 23, 2012
8264908 Method of detecting and compensating for precipitation in sodar systems Sep. 11, 2012
8248887 Physical object detection system Aug. 21, 2012
8149648 Method of processing echo pulses, and pulse-echo ranging system using the method Apr. 3, 2012
8144544 Method of processing echo profile, and pulse-echo system for use with the method Mar. 27, 2012
8116169 Active sonar system and active sonar method using noise reduction techniques and advanced signal processing techniques Feb. 14, 2012
8107318 Sonar scanner Jan. 31, 2012
8089827 Method for localizing remote devices, using acoustical and electromagnetic waves Jan. 3, 2012
8081539 Ultrasonic sensor Dec. 20, 2011
8000169 Object detecting apparatus, opening and closing control system for vehicle using object detecting apparatus, and method of detecting upstroke of envelope Aug. 16, 2011
7929374 Multi-static object tracker using specular cue initiation and directed data retrieval Apr. 19, 2011
7885144 Time-dependant gain control for an amplifier used in receiving echoes Feb. 8, 2011
7856291 Cleaning robot and method for controlling the same Dec. 21, 2010
7827433 Time-multiplexed routing for reducing pipelining registers Nov. 2, 2010
7800490 Electronic article surveillance system neural network minimizing false alarms and failures to deactivate Sep. 21, 2010
7752482 Hybrid parallel/serial bus interface Jul. 6, 2010
7688676 Sonar scanner Mar. 30, 2010
7668045 Ultrasonic distance measurement method and device by extracting the period of a received signal from noise using a dual-threshold comparator Feb. 23, 2010
7664600 Obstacle detection device Feb. 16, 2010
7649806 Markov sequential detector Jan. 19, 2010
7522472 Obstacle detection system Apr. 21, 2009
7499375 Method for detecting an obstacle in the detection area of a detection device Mar. 3, 2009
7486590 Ultrasonic sensor comprising an adjustable detection area Feb. 3, 2009
7475273 Hybrid parallel/serial bus interface Jan. 6, 2009
7463553 Underwater detection device Dec. 9, 2008
7417922 Obstacle detection device and method for estimating receiving time Aug. 26, 2008
7408448 Parking sensor apparatus and method to keep air brakes from interfering with the parking sensor apparatus Aug. 5, 2008
7388809 Fish finder that transmits ultrasonic waves, receives echo signals, and performs interference removal Jun. 17, 2008
7376047 Method for processing an echo profile and a pulse-echo ranging system May. 20, 2008
7369460 Sonar scanner May. 6, 2008
7349291 Pulse-echo ranging system Mar. 25, 2008
7327635 Adaptive comparator circuit and acoustic distance sensor comprising said circuit Feb. 5, 2008
7139220 Dynamic filter tuning for pulse-echo ranging systems Nov. 21, 2006
7130244 Device and method for adaptive ultrasound sensing Oct. 31, 2006
7123547 Time delay measurement Oct. 17, 2006
6885611 Method for high-pass filtering for echo processing in time of flight ranging systems Apr. 26, 2005
6870792 Sonar Scanner Mar. 22, 2005
6856918 Method to characterize material using mathematical propagation models and ultrasonic signal Feb. 15, 2005
6850186 System for determining position and velocity of targets from signals scattered by the targets Feb. 1, 2005
6822928 Adaptive sonar signal processing method and system Nov. 23, 2004
6819629 Method for distinguishing return echoes from noise Nov. 16, 2004

1 2 3

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