| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 342394000 | Iso-phase type | 7 |
| 20100171663 | COMMUNICATION DEVICE, COMMUNICATION SYSTEM, POSITION DETECTION METHOD AND PROGRAM - There is provided a communication device including: a receiving unit that receives radio signals transmitted from another communication device using a plurality of transmitting antennas by a plurality of receiving antennas; an estimation unit that estimates a range of a position where said another communication device possibly exists based on a phase of each radio signal received by the receiving unit and antenna spacing between the transmitting antennas; and a position determination unit that determines an existing position of said another communication device within the range estimated by the estimation unit. | 07-08-2010 |
| 20100259449 | TECHNIQUE FOR DETERMINING AN ANGLE OF ARRIVAL IN A COMMUNICATION SYSTEM - Embodiments of a circuit are described. In this circuit, a transmit circuit provides signals to antenna elements during an acquisition mode, where a given signal to a given antenna element includes at least two frequency components having associated phases, and where the phase of a given frequency component in the given signal is different from phases of the given frequency component for the other antenna elements. Moreover, an output node couples the transmit circuit to the antenna elements that transmit the signals. Note that these signals establish an angle of a communication path between the circuit and another circuit. | 10-14-2010 |
| 20100309054 | Method for Increasing the Location Accuracy for Unsynchronized Radio Subscribers - The invention relates to a method for increasing the location accuracy for unsynchronized radio subscribers, in which phase evaluation is used to ascertain the position of a transmitter which is to be located. The transmitter to be located and a further transmitter, whose location is known, respectively send a sequence of N signals to at least two receivers, wherein the transmission channel to be used for transmitting a signal is varied, in line with the invention, on the basis of a prescribed, symmetrical hopping scheme. The advantageous characteristics of the hopping scheme and the additional application of the TDOA (time difference of arrival) principle mean that highly accurate location is possible. | 12-09-2010 |
| 20110043407 | METHODS AND SYSTEMS FOR DETERMINING THE LOCATION OF AN ELECTRONIC DEVICE - Embodiments of the present invention include a method of determining a location of a mobile device. The method comprises transmitting a signal between a plurality of known locations and receiving signal at device of unknown location such as a mobile device. The signal may include multiple tones having different frequencies and resulting in sets of residual phase differences. The location of the mobile device may be determined using the known locations and the frequency and phase differences between the transmitted tones. In one embodiment, OFDM signals may be used between an access point and mobile device, for example, to determine the location of the mobile device. | 02-24-2011 |
| 20110148710 | DISTANCE SEPARATION TRACKING SYSTEM - A distance separation tracking process is provided that includes the transmission of a periodic radio frequency original signal from a beacon transceiver. The original periodic signal from the beacon transceiver is received at a remote target transceiver as a target received periodic signal. The target retransmits the received periodic signal to the beacon transceiver as a return periodic signal. Data points of the return periodic signal are sampled and used to calculate a phase differential between the original periodic signal and the return periodic signal that correlates to the distance separation range between the beacon transceiver and the target transceiver. | 06-23-2011 |
| 20110221633 | METHODS AND SYSTEMS FOR DETERMINING THE DISTANCE BETWEEN TWO OBJECTS USING WIRELESSLY TRANSMITTED PULSES - Methods and systems for determining the distance between two objects and optionally activating an alarm when the distance exceeds a predetermined threshold. The detection system includes a base unit and a remote unit. The base unit includes a first transmitter for transmitting at least one locator pulse; a first receiver for receiving at least one return pulse, the first receiver including a pulse detector for detecting the leading edge of the at least one return pulse; and a distance measurement unit. The remote unit includes a second receiver for receiving the at least one locator pulse; and a second transmitter for transmitting the at least one return pulse in response to the at least one locator pulse. The distance measurement unit is adapted for determining the distance between the base unit and the remote unit based on the leading edge of the at least one return pulse. | 09-15-2011 |
| 20160011297 | POSITIONING METHOD AND APPARATUS USING WIRELESS SIGNAL | 01-14-2016 |
