|
Match
|
Document |
Document Title |
|
|
7551062 |
Directional acoustic device
A directional acoustic device configured for producing a directional output along an acoustic axis, including at least one transducer configured to create at least two wave trains which are...
|
|
|
7480208 |
Occupancy sensor assembly
An occupancy sensor is provided with a housing having an interior cavity. A switch is mounted in the interior cavity of the housing and configured for placement in the open and closed positions. A...
|
|
|
7423933 |
Method for visualization of echoes received by an active sonar using a line spectrum emission
The invention relates to a method for the visualisation in a single image of the useful information obtained by the operation of an active sonar with line spectrum emission. The method permits an...
|
|
|
7376210 |
Apparatus and method for performing adaptive channel estimation in a mobile communication system
Disclosed is an adaptive channel estimator for improving a performance of a general channel estimator in a mobile communication system, and a method for controlling the same. The adaptive channel...
|
|
|
7209529 |
Doppler compensated receiver
A receiver includes a controller which receives A/D sampled input signals and shifts the sampled digital signal to compensate for Doppler effect in the input signal prior to demodulation. The...
|
|
|
7180442 |
Target indentification method using cepstral coefficients
A method of identifying an unknown target comprising creating a density function of cepstral coefficients for a known target; receiving a signal from the unknown target; transforming the signal...
|
|
|
7138938 |
System and method for preemptively sensing an object and selectively operating both a collision countermeasure system and a parking assistance system aboard an automotive vehicle
A system and method for preemptively sensing an object in the potential drive path of an automotive vehicle and selectively operating both a collision countermeasure system and a parking assistance...
|
|
|
7084745 |
Sensor system for determination of environment for motor vehicles
The invention relates to a sensor system for sensing objects in an area of the surroundings of a motor vehicle, in which, in order for the sensor system to sense the objects, waves are emitted in a...
|
|
|
7069021 |
Method and a system for positioning of an electronic device, and an electronic device
A method is provided for determining the position of an electronic device by receiving a code modulated signal transmitted by satellites, and position information of the satellites and time data,...
|
|
|
6965753 |
Apparatus for performing doppler correction in a wireless communications system
Apparatus for Doppler correction in a wireless communications system, including a first frequency synthesizer for generating a carrier signal oscillating at a rate responsive to a first input, a...
|
|
|
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...
|
|
|
6759954 |
Multi-dimensional vector-based occupancy sensor and method of operating same
A multiple dimension vector-based occupancy sensor. One or more sensors (for example, ultrasonic and/or infrared sensors) are used to produce one or more occupancy estimator vectors. The individual...
|
|
|
6703932 |
Intrusion detection and warning system
A warning system comprises a piezo-electric ceramic capable of resonating with an ultrasonic wave having a frequency within a predetermined frequency band and thus outputting an electric signal, a...
|
|
|
6198385 |
Entering detecting system for vehicles
In an entering detecting system for vehicles, a received ultrasonic signal is amplified by an amplifier circuit so that a Doppler signal may be generated from an amplified signal and a transmission...
|
|
|
6157293 |
Device for detecting the intrusion of a body in a predetermined space
The device comprises a transmitter (7) transmitting ultrasound into a predetermined space (5), a sensor (8) which senses the echoes from the transmission by the transmitter into the space in order...
|
|
|
6062076 |
Ultrasonic monitoring method and system for wake turbulence useful at runways
Two techniques for detecting vortices and their associated circulation are disclosed. The first is termed a closed path configuration, and the second is termed the dual path configuration. These...
|
|
|
5978315 |
Feed waste detector
A method and a device for detecting fodder waste/loss within a fish enclosure (1), where a sound transmitter (4) and a hydrophone (6) are disposed as an upwardly directed echo sounder close to the...
|
|
|
5959534 |
Swimming pool alarm
A method and apparatus for detecting unauthorized or accidental entry of an object into a body of water is disclosed, wherein the frequency or frequency range of sound waves in a body of water...
|
|
|
5900834 |
Doppler shift detector
A Doppler shift detector for determining the Doppler shift between a transmit signal and a receive signal uses clocked delay lines. The clocked delay lines count the number of edges in an applied...
|
|
|
5856778 |
Intrusion detecting apparatus for a vehicle
An intrusion detecting apparatus for a vehicle comprises: a doppler shift signal outputting unit for outputting a doppler shift signal in response to a reflected and received ultrasonic signal from...
|
|
|
5850184 |
Ultrasonic tool confirmation sensor
A tool detection system combines a sensor nozzle with an ultrasonic transducer capable of propagating and detecting ultrasonic waves. A wave is propagated in a coolant fluid stream directed at a...
|
|
|
5821854 |
Security system for a personal computer
A security system (300) for a personal computer maintains computer terminal (302) in an active mode of operation while the user is within range of the terminal. The system includes a radio (314)...
|
|
|
5684458 |
Microwave sensor with adjustable sampling frequency based on environmental conditions
An apparatus and method for varying the sampling frequency of a Doppler effect device, based on environmental conditions, is described comprising: (i) a transmitter for transmitting energy into a...
|
|
|
5682134 |
Method of operating a device for monitoring the interior of an automotive vehicle
A method of operating a system for monitoring the interior of a motor vehicle in which a rest signal amplitude is measured for the acoustic receiver or receivers in the absence of sound and is...
|
|
|
5646907 |
Method and system for detecting objects at or below the water's surface
A method and system are provided for detecting objects at or below a surf of a body of water. A focused beam of amplitude varying electromagnetic radiation, e.g., a pulsed laser beam, is directed...
|
|
|
5640143 |
Occupancy sensor and method of operating same
An occupancy sensor that provides improved performance by the inclusion of a microprocessor that controls the sensing transducers and processes the received signal to optimize desired detection...
|
|
|
5638048 |
Alarm system for swimming pools
A sonar, lidar, or radar system generates an alarm signal if a child enters a swimming pool when the system is enabled, and includes multiple safeguards against sounding false alarms due to...
|
|
|
5598042 |
Moveable desktop load controller
A device for controlling power to an electrical load. The device has two components: a portable desktop detector unit and an electrical powerstrip. The desktop detector detects the presence of a...
|
|
|
5581232 |
Ultrasonic wave reception apparatus and obstacle detection apparatus
An obstacle detection apparatus includes a rubber-like elastic body interspersed with electroconductive particles, and means for applying a voltage to the rubber-like elastic body to obtain an...
|
|
|
5550789 |
Water turbulence detector
A Doppler shift flow meter array detects turbulence in the wake of a submne. Three sets of transmitting and receiving sonic transducers are spaced in a line on a rigid support. The transmitting...
|
|
|
5508568 |
Receptacle safety deenergizer
A safety device for breaking power supplied to the plug of an appliance cord from a standard, preexisting electrical receptacle. The device plugs into the standard receptacle, and in turn accepts...
|
|
|
5483219 |
Alarm signal generation device for a vehicle
It is an object of the invention to provide a vehicle alarm signal generation device which can realize the reduction of the consumption of power without unstabilizing the intruder detect operation....
|
|
|
5453740 |
Vehicle collision prevention system using the Doppler effect
A vehicle collision prevention system for preventing a source vehicle from colliding with an obstruent object comprising detection circuitry adapted for detecting and providing an indication of an...
|
|
|
5438318 |
Movement detector for detecting movement within a predetermined space
A movement detector includes a transmitter (1) and a receiver (2) of electromagnetic, acoustic or light waves, and a frequency variation demodulator (3) connected to the receiver (2) and adapted to...
|
|
|
5396217 |
Phase shift analysis for vehicle intrusion detection
Intrusion into an automotive vehicle interior is detected by passing an airborne acoustic signal through a portion of the vehicle interior when the vehicle security system is active, and by...
|
|
|
5334969 |
Vehicle security system with controller proximity sensor
A car security system has a proximity sensor such as a radar sensor with variable sensitivity and capable of producing a detection signal upon detecting motion of a person in a monitoring area. A...
|
|
|
5327396 |
Underwater detection system
An underwater detection system which searches the water in a wide range of directions and displays moving targets in different colors depending on speeds of the targets comprises an ultrasonic...
|
|
|
5276427 |
Auto-adjust motion detection system
An improved dual sensor motion detection system is disclosed wherein the sensitivity of at least one of the sensors is adjusted in accordance with the response signals or signal history received...
|
|
|
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,...
|
|
|
RE33824 |
Fault detecting intrusion detection device
In an improved intrusion detection device system of the dual-sensor type, wherein one sensor is a PIR sensor and the other is a microwave sensor, the improvement comprises counting the detection of...
|
|
|
5077548 |
Dual technology intruder detection system with sensitivity adjustment after "default"
A dual-tech intruder detection system includes a pair of intruder-detecting subsystems, each functioning to detect intrusion by a technology different from the other, and apparatus for activating...
|
|
|
5043705 |
Method and system for detecting a motionless body in a pool
At least a bottom layer of a swimming pool is continuously scanned at known time intervals in order to generate successive frames of image data containing the contours of all objects whose size...
|
|
|
4994789 |
Phase shift divided leaky cable sensor
A continuous wave (CW) leaky cable sensor for an intrusion detector uses a pair of elongated parallel cables, one for establishing an RF field and the other for receiving the field. A modulator is...
|
|
|
4961039 |
Moving object detecting device
A moving object detecting device is arranged for detection in time series of an angle of respective received-wave signals at every moment with respect to basic axes in a vector plane, the basic...
|
|
|
4890265 |
Infra-sonic detector and alarm with self adjusting reference
A detector and alarm is provided for monitoring air pressure variations in a monitored space, which variations correspond to an intrusion. An infra-sonic detector includes a microphone or the like...
|
|
|
4870663 |
Method for selecting the mode of operation of an object counting means
A method is disclosed for selecting different modes of operation of a means used for counting objects in a given area, such as persons waiting in an elevator lobby. In the method, the movements of...
|
|
|
4839039 |
Automatic flow-control device
An add-on device (10) for converting a conventional manual faucet to an automatic faucet includes a body (12) that includes an adapter (14) by which the add-on device is mounted onto the outlet of...
|
|
|
4833450 |
Fault detection in combination intrusion detection systems
An intrusion detection system employs a microwave subsystem and a passive infra-red subsystem. Both systems must produce an output signal indicative of an intrusion in order for the system to...
|
|
|
4807255 |
Alarm system responsive to intrusion induced phase unbalance
An alarm system includes apparatus to be placed in a room to transmit ultrasonic wave signals that rebound off the room's walls and contents, to, and receive the rebounding signals, and to phase...
|
|
|
4800293 |
Infrasonic switch
Infrasonic switch device to actuate an alarm in response to detection of infrasonic energy, including a multi-position switch circuit having a "standby" or "reset" position responsive to infrasonic...
|