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7525875 |
Method for all ocean-terrain ships covert velocity reference
Methods for mitigating errors in velocity estimates obtained from correlation SONARs when the SONARs are operated over irregular ocean-bottom terrain are disclosed.
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7502712 |
Preventive defect detection and control process in composite material parts
A preventive defect detection and control process for a mass produced composite material parts automatically obtains representative parameters of backwall and intermediate echo signal results in...
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7239263 |
Platform shake compensation method in synthetic aperture processing system
The present information comprises the stages of: applying frequency analysis to positional information on a platform, generating virtual positional information on the platform based on a frequency...
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7187320 |
Matched maneuver detector
A target tracking arrangement predicts the state of a target. The predictor may be a Kalman filter. In the presence of a target which is maneuvering, the prediction may be in error. A maneuver...
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7049960 |
Method and system for locating objects
An area is established by positioning a string of boundary objects that are reflective to a range of ultrasonic frequencies. Tracking objects may be placed inside the area which also are reflective...
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6935164 |
Refiner control
In the present invention a refiner ( 108 ) of a mechanical pulping line is supplied with a controllable acoustic source ( 14 ), arranged for emitting acoustic signals into the pulp fluid. The...
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6909397 |
Stabilizing motion in a radar detection system using ultrasonic radar range information
One preferred embodiment of the present invention provides a system and method for suppressing motion artifacts introduced by movement of a radar detection system. Briefly described, in...
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6898977 |
Ultrasonic distance-measuring method and device
An ultrasonic distance-measuring method and device using variable-length transmitted pulses. For this purpose, the length of each of the transmitted pulses is adjusted such that it is approximately...
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6859417 |
Range finding audio system
A range finding audio system automatically modifies the audio output of an audio source based on the distance of a listener from the speakers. A speaker in an audio system may include a range...
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6850186 |
System for determining position and velocity of targets from signals scattered by the targets
The present invention relates to a system for using signals scattered by targets to determine position and velocity for each of the targets and comprises a set of transmitters and receivers of...
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6731204 |
Object detection system providing driver information through sound
A vehicle object detection system is disclosed that audibly conveys to the vehicle operator the direction of the detected object relative to the vehicle through the vehicle's audio system. The...
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6678209 |
Apparatus and method for detecting sonar signals in a noisy environment
A method and apparatus for reducing sonar measurement error in noisy environment, by monitoring environmental noise spectrum over the range of operable sonar frequencies, and automatically changing...
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6659232 |
Method and device for position detection of an object along an acoustic-signal conductor
The invention relates to the detection of the position of an object which can be moved along an acoustic-signal conductor of ferromagnetic material, in which an acoustic signal is incoupled in a...
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6542436 |
Acoustical proximity detection for mobile terminals and other devices
A method and a device for detecting if an object is in proximity to the device, wherein sound (audio) transducers already found in the device are used to realize the proximity detection function,...
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6505509 |
Apparatus and method for measuring the level of a fluid
An apparatus for detecting a fluid level is disclosed, which includes a coaxial sensor having a pair of conducting tubes positioned with respect to each other in spaced coaxial arrangement, a...
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6480118 |
Method of drilling in response to looking ahead of drill bit
A method for improving ROP and reducing hazards in drilling subterranean wells by using an acoustical system 15 to look ahead of the drill bit 14, detects and analyzes geologic features ahead...
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6326915 |
Radar device with multiplexed display functions for use in backing up a vehicle
A radar device for use in backing up a vehicle is disclosed herein. A plurality of wave sensors is installed on a rear portion of a vehicle for detecting an obstacle therebehind. A master...
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6011470 |
Ultrasound keyboard protection
An apparatus for protecting a keyboard and includes a sound transformer placed in the keyboard and a sound receiver placed outside the keyboard to receive a signal radiated from the sound...
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5867091 |
Vehicle security system
A vehicle alarm comprises of a control unit (2) coupled to a message center (22) and an ultrasonic movement sensor (20). The ultrasonic movement sensor (20) is automatically activated when the...
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5838636 |
Underwater vehicle guidance system and method
A system and a method for directing a torpedo toward a submerged or surface arget by transmitting steering information to the torpedo via sonic pulses. A suitable underwater surveillance system,...
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5793704 |
Method and device for ultrasonic ranging
A method and device for ultrasonic ranging. As in prior art devices, ultrasound pulses are transmitted by the device towards a target, and echo pulses from the target are received. The timing of...
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5666325 |
Method and apparatus for monitoring and controlling the dispensing of materials onto a substrate
A dispensing system includes a robot that controls the positional location of a dispenser that dispenses a bead of material, such an adhesive, onto a substrate and wherein a sensor monitors the...
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5636179 |
Sonic spectrometer and treatment system
A novel system and method for treating an object with sonic waveforms. A traveling broad-band sonic waveform containing a broad-band of sonic frequencies is radiated at the object. A traveling...
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5613940 |
Synthesizing array for three-dimensional sound field specification
A non-invasive, synthesizing array of "N" reciprocal transducers is driven by "N" linearly independent inputs for three-dimensional sound field specification at "N" locations either within, or on,...
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5577006 |
Adaptive acoustic signal target detection system
An acoustic ranging and detection system comprises an acoustic transmitter for producing an acoustic ranging signal and first and second acoustic receivers positioned on either side of the acoustic...
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5573041 |
Dispenser control with ultrasonic position detection
A method and apparatus is provided to detect the position of an object, such as a container, within a multidimensional target space above which is a dispensing spigot to dispense water, ice, or...
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5355130 |
Ultrasonic proximity switch with a synchronizing device
When operating adjacent ultrasonic proximity switches, faulty output states can occur due to mutual interference (e.g., the incorrect allocation of echo signals). To solve this problem, it is known...
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5239515 |
Error-eliminating rapid ultrasonic firing
A system for producing reliable navigation data for a mobile vehicle, such as a robot, combines multiple range samples to increase the "confidence" of the algorithm in the existence of an obstacle....
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5220922 |
Ultrasonic non-contact motion monitoring system
An ultrasonic non-contact motion monitoring system, useful for monitoring motional activities and such activities as respiration rate and heart beat rate. Using dual ultrasonic transducers,...
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5187689 |
Device for selectively detecting a moving object
A device for selectively detecting in real time a moving object progressing on a path in a multidimensional space, the device comprising first means determining an efficiency, corresponding to the...
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5144593 |
Integrated automatic control for ultrasonic proximity switches
The transmitting pulse required to operate an ultrasonic proximity switch is usually generated externally in separate evaluation electronics. This requires additional circuitry, either analog or...
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5131271 |
Ultrasonic level detector
An ultrasonic level detector includes a transducer for generating and receiving bursts of sonic energy at a surface to locate the position of the surface. In response to receiving a burst of energy...
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5031156 |
Method and apparatus for detecting and counting articles
Articles, moving along a delivery path, are counted by directing a stream of pressurized air toward one major surface of the passing articles, the direction of the air stream being transverse to...
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5020477 |
Automatic milking device and method of operation thereof
A milking cup is moved into position surrounding a cow's teat by power operated members controlled by an electrical circuit including a pair of spaced ultrasonic detectors for locating the teat....
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4984221 |
Borehole acoustic logging system having automatic reflection signal level control
A borehole televiewer employs a transducer energized by repetitive voltage pulses for generating pulses of acoustic energy for transmission to the walls of a borehole and for detecting direct...
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4982384 |
Split beam sonar
A sonar system is disclosed that includes contiguously angularly disposed d oppositely rotated transmitting and receiving transducers for broadcasting an acoustic signal and for receiving target...
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4970978 |
Arrangement for handling a sewing machine
The invention comprises an arrangement for controlling a machine by means of the body movement of the operator. It is used for controlling a sewing machine intended for a handicapped person or for...
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4905208 |
Distance detecting apparatus
A distance detecting apparatus has a transmitter for transmitting a cyclic output signal. The transmitter is digitally controlled to adjust the frequency of the output signal in relatively small...
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4843464 |
Device for automatic sensing of televiewing distance
An apparatus for automatically sensing televiewing distance to determine whether or not a televiewer is standing within a predetermined potentially harmful distance in front of a television set by...
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4835614 |
Control method for limiting watching distance in television
A control method wherein a TV receiver, under the programmed control of a microcomputer, prevents infrared signals from a remote control transmitter and a watch-distance-limit-device transmitter...
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4831448 |
Viewing distance sensor for television receiver
A viewing distance sensor for television receiver which cannot influence the remote infra-red control function over other electronic equipment positioned in the vicinity of a television receiver...
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4815046 |
Ultrasonic sensor system
An ultrasonic sensor system particularly for automatic door openers of a swinging door type, in addition to sensors (14) for people approaching a door for controlling opening and closing purposes,...
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4800386 |
Method of and apparatus for counting objects
A method of and apparatus for counting objects present within a predetermined area, by detecting acceleration and deceleration of the objects employ at least one Doppler radar to sense the...
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4757481 |
Method and system for detecting water depth and piloting vessels
The depth of water ahead of a vessel is detected by sonar means carried aboard a drone stationed by radio control ahead of the vessel. Detected depth information is transmitted from the drone to...
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4731762 |
Distance sensing apparatus
Apparatus for sensing distances in air by transmitting an ultrasonic pulse and measuring the time for return of an echo from a target object is characterized by ability to measure distances to...
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4713798 |
Method of and apparatus for providing object data by machine vision
A method of and apparatus for carrying out machine vision of an object for obtaining object data therefrom in which the object is illuminated by frequency swept ultrasonic stress wave energy from a...
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4679175 |
Ultrasonic distance sensor with dual burst noise rejection
An ultrasonic distance sensing method and apparatus are disclosed in which a transducer periodically transmits a pair of bursts of acoustic energy along an acoustic path toward a target object, an...
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4654835 |
Adaptive predictor of surface reverberation in a bistatic sonar
A bistatic sonar employing LMS adaptive spatial prediction is used to process against surface reverberation from the convergence zone (CZ). Hydrophones spatially separated from the primary array...
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4644513 |
Electrical circuits for timing signals
From a first aspect this invention provides a missing pulse detector for determining the true termination time of a sequence of pulses in a signal of an assumed predetermined length having a rising...
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4635241 |
Ultrasonic device
The device comprises at least two ultrasonic transducers emitting focused radiation and a circuit making it possible to measure the difference between the sampled signals supplied by these two...
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