Class / Patent application number | Description | Number of patent applications / Date published |
367128000 | With electromagnetic wave | 9 |
20090003136 | Impact Energy Powered Golf Ball Transmitter - Electrical power can be generated from impact based energy, such as from a golf ball being struck by a golf club. One or more piezo-electric devices, which are embedded in the core of the golf ball, are stressed by the impact and generate energy. Each piezo-electric device generates energy when stressed, which is then rectified and stored in a capacitor circuit. The stored energy in the capacitor circuit is used to power a transmitter to emit energy via an antenna, including all necessary electronics such as an oscillator, a modulator, and various control and logic circuits. The transmitted signals can be received by a hand held locator device. The described impact generated energy powers the transmitter a sufficiently long amount of time for the golfer to locate the golf ball. The impact based energy generation can also be used for other non-golf applications. | 01-01-2009 |
20090109796 | SYSTEM AND METHOD FOR PRECISION ACOUSTIC EVENT DETECTION - A system and method for providing precision locations for sensors which make up an array of sensors in a gunshot detection system. In a preferred embodiment sensors employ a commercial GPS which reports a sensor position or a group of pseudoranges to GPS satellites. A server collects differential information from a differential node and, in one preferred embodiment, calculates a precision position for each sensor by adjusting the reported position or pseudoranges with the differential information. In another preferred embodiment differential information is sent from the host to individual sensors which calculate their own precision positions. Differential information may be latitude and longitude corrections, pseudorange corrections, ionospheric delay, GPS satellite clock drift, or other corrective term which will improve the accuracy of a sensor position. | 04-30-2009 |
20090141591 | System and Method for Extending GPS to Divers and Underwater Vehicles - A navigation system extends satellite navigation to divers, underwater vehicles, and surface vessels. The navigation system comprises a location reference unit and a plurality of sub-surface beacon units. The location reference unit includes a receiver to receive navigation signals from earth-orbiting satellites and/or an inertial navigation system. The location reference unit further includes control circuits to communicate with to sub-surface beacon units and to transmit location information to said sub-surface beacon units, and a transceiver to transmit location information to the sub-surface beacon units. The beacon units include control circuits to determine the location of the beacon unit based on location information received from the location reference unit, and a transceiver to receive location information from the location reference unit and to transmit location information to a guided unit to provide navigation assistance to the guided unit. | 06-04-2009 |
20090154294 | METHOD AND SYSTEM FOR RECOGNIZING LOCATION BY USING SOUND SOURCES WITH DIFFERENT FREQUENCIES - Provided are a method and a system for recognizing a location to control the location of a moving object by installing an ultrasonic satellite transmitting an ultrasonic signal. The method includes generating a synchronizing signal at a plurality of the ultrasonic satellites. The ultrasonic satellites simultaneously transmit the ultrasonic signals respectively having different frequency from each other. A receiver of the moving object receiving the ultrasonic signal measures a distance between the receiver of the moving object and each ultrasonic satellite by classifying a frequency of the ultrasonic signal, and calculates a current location of the moving object by using the measured distance. The system includes ultrasonic satellites for transmitting ultrasonic signals, a moving object for recognizing a current location by receiving the ultrasonic signals from the ultrasonic satellites, a reference time broadcasting device for providing a synchronizing signal to the ultrasonic satellites and the moving object in operation, and a server for providing coordinates of the ultrasonic satellites to the moving object. | 06-18-2009 |
20090190441 | AUTONOMOUS ULTRASONIC INDOOR TRACKING SYSTEM - The present invention provides a Positioning on One Device (POD) for locating and tracking objects and an autonomous ultrasound indoor track system (AUITS) and method for locating objects by using the POD. The AUITS can comprise: a tag device installed on a mobile object, which includes radio frequency (RF) and ultrasound transmitters for transmitting RF and ultrasound signals; and a POD for receiving the RF and ultrasound signals transmitted from the tag device to locate the mobile object. The POD can comprise: a plurality of leaf modules, each of the leaf modules including a positioning signal receiver for receiving the positioning signals (e.g. ultrasound signal) transmitted from the tag device, wherein there is a known structural topology relationship between the plurality of leaf modules. Then, the positioning signal detection times from respective positioning signal receivers and the structural topology relationship of the POD can be used for calculation of the position of the object. Compared with the prior arts, the POD and the AUITS system of the present invention presents several advantages, such as high accuracy, easy deployment, calibration free, low cost, in-device coordination, and flexibility. | 07-30-2009 |
20110069585 | Gunshot Detection Sensor with Display - A system for locating and identifying an acoustic event such as gunfire. The inventive system employs a plurality of man wearable acoustic sensors for detecting gunfire, each acoustic sensor having a display associated therewith for displaying information concerning the acoustic event to a user. In preferred embodiments, the sensor includes a microphone for receiving acoustic information; an A/D converter; a processor for processing the digitized signal to detect a gunshot and determine a time of arrival; a GPS receiver for determining the position of the acoustic sensor; and a network interface for bidirectional communication with a system server. Preferably the display comprises: an LCD; and an electronically readable compass. When the display and acoustic sensor are in separate housings, the acoustic sensor includes a transmitter and the display includes a receiver for transferring the gunshot information. | 03-24-2011 |
20140321243 | DEVICE FOR DETECTING EVENTS - A multi-sensor device for detecting events, comprises first acquisition means comprising at least a first sensor, operating in a first frequency band and second acquisition means comprising at least a second sensor, operating in a second frequency band different from the first frequency band, means for processing raw data originating from the acquisition means and comprising means for the detection of events in the raw data and for determining the geographic location of said events, means for transmitting an alert if an event is detected by the processing means, means for storing the raw data, said storage means being suitable for restoring the stored raw data in a synchronized manner, and monitoring means which, following detection of an event in the raw data of one of said acquisition means, enables said processing means to be adapted to detect events in said stored raw data originating from said other acquisition means. | 10-30-2014 |
20150301153 | Sensing Direction and Distance - Technology described in this document can be embodied in an optical sensor that includes a rectangular array of at least four photodetector cells of substantially equal size. An opaque mask is affixed over the rectangular array. The opaque mask defines a substantially rectangular aperture for admitting light onto only a portion of the surface of each of the at least four photodetector cells, where the aperture can be centrally positioned over the rectangular array. | 10-22-2015 |
20160139241 | SYSTEM AND METHOD FOR 3D TRACKING FOR AD-HOC CROSS-DEVICE INTERACTION - Disclosed is a three-dimensional ad-hoc tracking system and method between two or more devices at a location. The disclosed systems and methods can be implemented on commodity mobile devices with no added components and require no cross-device calibration, in order to track surrounding devices. Such tracking can be achieved by fusing three types of signals: 1) the strength of Bluetooth low energy signals reveals the presence and rough distance between devices; 2) a series of inaudible acoustic signals and the difference in their arrival times produces a set of accurate distances between devices, from which 3D offsets between the devices can be derived; and 3) the integration of dead reckoning from the orientation and acceleration sensors of all devices at a location to refine the estimate and to support quick interactions between devices. The disclosed systems and methods can be implemented by cross-device applications on mobile devices. | 05-19-2016 |