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7610675 |
Method to produce a transponder
A method to produce a transponder comprises the steps of positioning a coil comprising at least one coil end in a predetermined coil position and holding all of said coil ends in a respective...
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7474208 |
Method and system for locating an object
One aspect of the invention is a system for locating an object. The system may include, for example, an object electromagnetic receiver, an audio amplifier, an audio transducer, and an object...
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7460433 |
Ultrasonic wave transmitting and receiving system for detecting underwater objects
A trawl net ( 2 ) is attached to ends of warps ( 4 ) extending from a ship ( 6 ), such as a trawl boat, in the sternward direction, and a transponder ( 5 ) to transmit a response signal is attached...
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7430152 |
System and method of operation thereof for increasing acoustic bandwidth of transmitting devices
Disclosed is a system, and a method of operation thereof, which improves the RF link employed between a transmitting sonobuoy and an associated receiving aircraft. The sonobuoy receives acoustic...
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7031224 |
Buoy-to-sailboat distance indicator system
This system is intended for use during a regatta to indicate the distance between a sailboat and a race course marker buoy being rounded as part of the race. The system involves a transmitter on...
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6934218 |
Sounding device for showing its location on a fish detector
A sounding device for showing its location on a sonar fish detector including a sonar wave receiving unit ( 10 ) to detect the sonar signal, a sonar wave producing unit ( 20 ) to simulate the...
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6904000 |
Object locator system
This invention is a system for locating an object. A tag unit ( 100 ) that is attached or embedded into the object to be located generates radio frequency signals when excited by an ultrasonic wave...
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6711095 |
Expenable/recoverable voice and data communications system buoy
An untethered communications buoy system has an untethered buoy freely floating on the surface of water to not compromise the location of the submersible. The submersible has a cavity containing a...
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6547733 |
Ultrasound imaging apparatus and method using Golay codes with orthogonal property
Ultrasound images are obtained using a set of Golay codes with orthogonal property as ultrasound receiving and transmitting signals. Ultrasound signals having a plurality of codes are transmitted...
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6307808 |
Methods and apparatuses for seismic prospecting
An improved method and apparatus are provided for improving a coupling to a substrate and orientation of seismic receivers such as a geophone to a substrate for the analysis and gathering of...
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5822272 |
Concentric fluid acoustic transponder
An acoustic transponder method and apparatus provides a high degree of frency and target strength selectivity by utilizing two or more concentrically disposed, hollow spheres each containing...
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5742251 |
Combat harness
The harness comprises a plurality of elements, such as light detectors, a laser emitter and a master control unit. The elements are communicating by means of ultrasonic signals. Such signals...
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5570323 |
Navigational device for a scuba diver
A navigational device (10) for assisting a scuba diver in determining a direction toward and a distance from a dive boat (12) or to a buoy near the shore at which point the dive originated. The...
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5504477 |
Tracking system
A performer tracking system, and an associated method, for tracking movements of at least one performer upon a stage. A plurality of signal transmitters are positioned about the stage and transmit...
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5148404 |
Transponder and method for the production thereof
The invention relates to a transponder comprising a closed glass casing in which electrical components are placed, wherein the glass incorporates iron oxide, a method for the production of such a...
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5136548 |
Remote-control system for closures
A remote-control system for closures with a movable hand transmitter with at least one transmission key, this transmitter generating and radiating directed coded control signals upon actuation of...
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5122989 |
Digital echo repeater
The present invention relates to an echo repeater/beacon system for use ooard marine vessels and platforms. The system includes a hydrophone for receiving an incoming acoustic signal from a remote...
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5065370 |
Programmable pulse shaper for sonobouy apparatus
This invention discloses electronic circuit that can be either embedded in n oceanographic sonobuoy housing or used as stand-alone equipment and which establishes and generates sonar signals of a...
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5054007 |
Handclap activated cat repelling device
A compact, sound activated device for repelling house cats from indoor surfaces and areas. When triggered from a remote location by a sharp audio signal such as that of a human handclap, the device...
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5016227 |
Top mounted buoy signaling device
A top mounted buoy signaling device for marine navigation which is selectively activated in response to a coded address signal. The buoy signaling device includes a buoy having a top mounted...
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5008859 |
Acoustic transponder receiver circuit
A transponder that responds differently to two different input signals. The first input signal is at a first frequency. The first input signal is detected by a first powered detector that operates...
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4992988 |
Underwater acoustic control system
An underwater acoustic control system for use in a subsurface unit receiv coded signals. A hydrophone receives the signal and enables an electronics package to supply a control pulse which could...
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4951263 |
Spread spectrum underwater location beacon system
An underwater location beacon emits a continuous wave signal which is phase-shift modulated by a pseudo-noise, spread spectrum code. This signal is detected with an exact replica of the transmitted...
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4903243 |
Marine transponder system
A marine transponder system which is selectively activated to produce a predetermined signal pattern of light/sound/radio transmissions for maritime devices and structures such as navigational...
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4894810 |
Method and a device for measuring a distance by means of ultrasonic pulses
The invention relates to a method and a device for measuring a distance by means of an ultrasound. A drawback of this type of known methods for measuring a distance is that the transmitting and the...
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4829494 |
Acoustic pinger for use in high speed water entry test bodies
Tracking and location of a high speed water rentry vehicle is assured by the inclusion of an acoustic source. An acoustic generator in the form of a piezoelectric transducer is potted in...
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4751689 |
Method of measuring a distance
Disclosed is a method for measuring a distance by using a radio-wave and an ultra-sonic wave. The method includes the steps of generating a certain start pulse in the form of a radio-wave between a...
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4654528 |
Radiation level reporting system
A remote sensing transponder system is disclosed including apparatus for sensing gamma radiation levels proximate thereto, generating a signal indicative of the sensed radiation level, and...
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4631708 |
Transmitter/responder systems
A memory suitable for use as a responder, comprising: (a) receiver means for receiving a transmitted signal S1; (b) generator means (76) for generating a carrier component of a transmittable...
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4604733 |
Apparatus for determining range and bearing
Apparatus which provides both range and bearing information between a transponder and a transponder interrogator. The interrogator transmits an acoustic interrogating pulse which is received by the...
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4556883 |
Transmitting and receiving circuit for an apparatus for the automatic identification of objects and/or living organisms
Transmitting and receiving circuit for an apparatus for the automatic identification of objects and/or living organisms, including a stationary interrogator and a transponder fastened to the object...
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4494224 |
Pipe measuring method and apparatus
Method and apparatus for determining the length of a tubular member such as a pipe are disclosed. A burst of acoustical pulses are emitted from a sending unit and are received by a reference...
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4486861 |
Transponder telemetry
Acoustic transponders are attached to sections of a submarine cable for use in accurately locating the cable during deployment or retrieval. An acoustic signal at one frequency, transmitted from...
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4404666 |
Quick deployment vehicle
A quick deployment vehicle (QDV) for implanting a transponder or beacon on he ocean bottom in an upright position exposed for receiving or transmitting acoustic signals. The vehicle includes a...
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4401987 |
Ranging system having reduced recognition jitter
A ranging system employing a limiting constant false alarm rate (CFAR) receiver having reduced recognition time uncertainty, or recognition jitter. The jitter is made proportional to...
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4388708 |
Method and apparatus for determining physical quantities
A distance R to be measured is derived by measuring the spacing x m between a fixed transmitter Tx and a movable receiver Rx, and comparing this with the reference spacing x ref between a fixed...
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4381144 |
Underwater camera enclosure including sonar range finding device
An underwater photographic system which includes an underwater camera enclosure having an underwater sonar range-finding apparatus for providing a signal to adjust the distance-related parameters...
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4367458 |
Supervised wireless security system
An ultrasonic communication system capable of wireless installation and supervised operation is achieved by communicating each information bit as two distinct ultrasonic frequencies separated in...
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4318188 |
Semiconductor device for the reproduction of acoustic signals
A microphone, for receiving an acoustic signal, is connected to a transducer which changes the analog signal delivered by the microphone into a sufficiently dense series of storable pulses in such...
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4313183 |
Acoustic distance measuring method and apparatus
An acoustic distance measuring device using a predetermined frequency shift keyed bit pattern as the acoustic signal transmitted and received. A phase lock loop detector is provided. Variations in...
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4293937 |
Borehole acoustic telemetry system
In a borehole acoustic telemetry system for acoustically transmitting data over a pipe suspended in a borehole, the level of noise in the data stream is inherently high, making the use of precise...
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4282585 |
Site occupancy detector
An acoustic system for covertly detecting surface to air missile (SAM) si by monitoring for noise emitted by the electrical power generated at the sites. The output of a microphone is sharply...
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4278976 |
Remote sensing device
A system for battlefield and enemy support area surveillance. An air-drop unit monitors and records on tape enemy activity, and plays back and transmits the monitored data at high speed when...
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4264978 |
Device for locating audio surveillance apparatus
A pulse generator is provided for transmitting an acoustic pulse which is sensed by an audio surveillance device and retransmitted as modulated electromagnetic information. Associated with the...
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4255797 |
Sonic attenuation system
A beam of sound, of sufficient amplitude for inducing a finite amplitude effect in water, is directed into a field of sound for interaction therewith to produce intermodulation products. Energy is...
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4254478 |
Measurement of distance using ultrasonic signals
In the measurement of the distance between two immersed points using ultrasonic signals, a control beacon is located at one point and a servo-beacon at the other point. The control beacon emits a...
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4242671 |
Transponders
A tag transponder which is capable of receiving a signal from a transmitter and re-transmitting the signal after a delay. The incident electromagnetic wave from the transmitter is converted into an...
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4225955 |
Thin disk acoustic baffle system
A thin disk acoustic baffle comprising a thin disk of material having a uue combination of acoustical properties and dimensions to provide optimum attenuation of sound transmission between two...
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4221927 |
Voice responsive "talking" toy
A toy which, in response to a complex sound such as human speech generates a train of audio pulses. The pulses are psuedo-random with respect to frequency composition and to duration, thus...
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4214314 |
Precision transponder and method of communicating therewith
A method of communicating with a remote precision transponder includes the step of transmitting first signals to the transponder. The first signals are received in the transponder, and second...
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