Methods and apparatus for display of digital content associated with a location of a Node in a wireless communication area. A user interface is generated with a digital representation of content associated with a physical tag or other Node. The user interface includes interactive portions based upon positions in the wireless communication area. The interactive portions may be activated to display the digital content associated with the physical tag in a user interface.

Head-mounted augmented reality (AR) devices can track pose of a wearer's head to provide a three-dimensional virtual representation of objects in the wearer's environment. An electromagnetic (EM) tracking system can track head or body pose. A handheld user input device can include an EM emitter that generates an EM field, and the head-mounted AR device can include an EM sensor that senses the EM field. EM information from the sensor can be analyzed to determine location and/or orientation of the sensor and thereby the wearer's pose. The EM emitter and sensor may utilize time division multiplexing (TDM) or dynamic frequency tuning to operate at multiple frequencies. Voltage gain control may be implemented in the transmitter, rather than the sensor, allowing smaller and lighter weight sensor designs. The EM sensor can implement noise cancellation to reduce the level of EM interference generated by nearby audio speakers.

A device (10) is placed on an object (30). A reference feature of the object (30) is aligned with a reference feature of the device (10). Based on signals transmitted between at least one measurement point of the device (10) and a further device (20), a position of the at least one measurement point is measured. The position of the object (30) is then determined based on the measured position of the at least one measurement point and based on information on arrangement of the at least one measurement point in relation to the reference feature of the device (10).

A method for setting up a reference coordinate system including: providing an object with sensors having a geometrical cavity with a pick up terminal configured to provide an output that varies with orientation of the sensors with respect to a direction of an incoming polarized RF plane of polarization; using polarized RF reference sources each having two polarization planes offset from each other and different from polarization fields of other references sources; amplitude modulating the two polarization planes for each of the reference sources to define a time varying linear polarization vector for each of the reference sources; and determining, for each of the reference sources, the position and orientation of the object relative to the reference coordinate system based on a measured amplitude of the time varying linear polarization vector at the sensors, a predetermined mapping function and a predetermined scanning pattern of the time varying linear polarization vector.

Methods and devices for, among other applications, locating an emitter, comprises an array of receivers configured in different angular positions about the array relative to a corresponding array location axis, to receive a signal from the emitter having at least one burst containing a train of pulses, and at least one processor configured to profile pulse count values at each receiver, from one receiver to another in the array in relation to their respective angular positions, to designate a maximum peak angular position associated with a maximum pulse count value, and to attribute the peak angular position to an angular emitter location.

A system includes a locatable glove and a pose determination device. The locatable glove includes a glove body worn over a hand of a user, and a plurality of positioning transponders. The positioning transponders are coupled to the glove body at various positions on the glove body, and each re-radiates a received signal, the re-radiated signal unique to the positioning transponder. The pose determination device includes a plurality of antennas and a controller. The antennas are each configured to receive the unique signals re-radiated by the positioning transponders. The antennas are physically separated from each other. The controller is communicatively coupled to the plurality of antennas, and is configured to determine, for each of the received unique signals, a location of the position on the locatable glove of the positioning transponder corresponding to the unique signal.

Provided is an auxiliary parking method, apparatus and system. The method includes: starting a vehicle image acquisition mode; receiving a plurality of radio frequency signals synchronously transmitted by at least two radio frequency identification transmitters distributed in a parking area in real time; determining a current position of a vehicle in the parking area according to the plurality of radio frequency signals as received; and displaying information identifying a vehicle virtual position to be parked in an image of the vehicle according to the current position of the vehicle in the parking area as determined and at least one available vehicle virtual position in the parking area.

A rotatable antenna apparatus has a fixed unit for attachment of the apparatus to an external structure, and a rotatable unit mounted on the fixed unit for rotation relative to the fixed unit. The rotatable unit comprises both an antenna assembly and processing circuitry coupled to the antenna assembly for performing signal processing operations. The apparatus further includes a thermally conductive shaft connected to the rotatable unit and located for rotation within the fixed unit, and a thermally conductive coupling structure to conduct heat from one or more heat generating components of the processing circuitry into the thermally conductive shaft. A heat sink within the fixed unit is thermally coupled to the thermally conductive shaft to draw heat away from the thermally conductive shaft. This provides an efficient mechanism for removing heat from the rotatable unit, whilst still allowing the rotatable unit to be sealed against external environmental conditions.

A method of direction finding (DF) positioning based on a simplified antenna platform format in a wireless communication network is proposed. A receiver receives antenna platform format information of a transmitter having multiple antenna elements. The antenna platform format information comprises an antenna platform format indicator, antenna platform position and orientation information, a number of antenna elements, and switching delay, phase center, and polarization information for each antenna element. The receiver receives a plurality of direction finding sounding signals transmitted from the transmitter via the multiple antenna elements. The receiver performs a DF algorithm based on the plurality of DF sounding signals and the antenna platform format information and thereby estimating a DF solution. Finally, the receiver determines its own location information based on the estimated DF solution.

A camera system for filming a golf game comprises a camera module for capturing images; a pan-tilt head pivotally connected to the camera module and configured to rotate the camera module horizontally and vertically; a circuit board connected to the camera module and the pan-tilt head and configured to control the camera module and the pan-tilt head; a sensor unit sensing the direction, vertical angle, and horizontal angle of the camera module; and a central processing unit connected to the camera module, the pan-tilt head and the sensor unit. The present invention also provides a method for filming a golf game by using the camera system.