76results about How to "Weak signal" patented technology

A method, device and system for determining a receiver location using weak signal satellite transmissions. The invention involves a sequence of exchanges between an aiding source and a receiver that serve to provide aiding information to the receiver so that the receiver's location may be determined in the presence of weak satellite transmissions. With the aiding information, the novel receiver detects, acquires and tracks weak satellite signals and computes position solutions from calculated pseudo ranges despite the inability to extract time synchronization date f, 'n the weak satellite signals. The invention includes as features, methods and apparatus for the calibration of a local oscillator, the cancellation of cross correlations, a Doppler location scheme, an ensemble averaging scheme, the calculation of almanac aiding from a table of orbit coefficients, absolute time determination, and a modified search engine.

A touch panel is partitioned into a sensing region and a circuit region and the circuit region is positioned around the edges of the sensing region. The touch panel comprises an electrode layer, a first wire layer, a second wire layer and an insulating layer. The electrode layer is disposed in the sensing region. The first wire layer is disposed in the circuit region and electrically connects to the electrode layer. The second wire layer electrically connects to the first wire layer in the circuit region. The insulating layer has a portion being disposed between the first wire layer and the second wire layer in the circuit, and has a plurality of first through holes wherein the first wire layer electrically connects to the second wire layer through the first through holes. The present disclosure also provides a method of manufacturing a touch panel.

Disclosed herein is a system for and method of determining the location of an RFID reader, the system comprising: a plurality of transmitters having a known reference point. Each transmitter includes a circuit for transmitting a sequence of unique RFID pseudo tag signals. Each unique RFID pseudo signal in the sequence has a unique range of transmission. Each unique RFID pseudo tag in the sequence has a tag identification indicating the range of transmission of the pseudo tag signal and a transmitter identification value indicating the transmitter from which the pseudo tag signal was transmitted. An RFID reader receives the unique RFID pseudo tag signals and distinguishes between each received unique RFID pseudo tag signal. A location calculator calculates the location of the RFID reader based on the range of transmission indicated in the tag identification and the location obtainable from the transmitter identification value of the unique RFID pseudo tags received by the RFID reader.

A concealed satellite navigation and positioning system comprises a concealed satellite constellation, a concealed navigation and positioning signal, a concealed navigation and positioning ground master control station, an intelligent receiver and a passive orbit determination station. The concealed satellite constellation is a generic GEO communication satellite constellation and is composed of aC / Ku frequency band GEO commercial communication satellite, an SIGSO small-dip-angle synchronous orbit satellite and an IGSO inclined orbit satellite. The concealed navigation positioning signal is concealed under an original service signal of a generic GEO communication satellite, the signal power is less than one percent of the full-load power of a satellite transponder, the bandwidth of the navigation signal is more than 40MHz, and the signal-to-noise ratio reduction amplitude of the original signal does not exceed 0.3 dB; wherein the concealed navigation positioning ground master controlstation is a concealed navigation positioning fixed station which is fixedly arranged or a concealed navigation positioning vehicle-mounted communication-in-static station which can move along with avehicle; the intelligent receiver comprises an antenna module, a radio frequency module, a baseband processor module and an autonomous navigation module; the passive orbit determination station comprises at least four orbit determination reference stations located on the surface of the earth. The orbit determination base station receiver collects satellite signals, calculates the position correction amount of a measured satellite, counts the orbit determination precision, arranges the satellite position correction amount information into a navigation message, and injects the satellite positioncorrection amount information into the satellite through the concealed navigation positioning ground master control station for positioning by a user.

Metadata of the type for instance associated with television or video Electronic Programming Guides (EPG) or Interactive Programming Guides (IPG), is transported via a digital delivery network such as the Internet to a video receiving device such as a personal video recorder (PVR). The receiving device extracts the metadata for a purpose such as determining from the metadata programming of control signals. The PVR thereby reads or interprets control signals derived from the metadata provided via the digital delivery network so as to control subsequent video recording.