Abstract: A method and apparatus for saving power during synthetic positioning in Global Navigation Satellite System (GNSS) receivers is provided. According to one embodiment, a device includes a Global Navigation Satellite System (GNSS) receiver, and an inertial sensor block. The GNSS receiver is disabled when the device enters a dead zone, and the device uses data from the inertial sensor block and a remotely located database to perform navigation functions.

Abstract: An dual function/combination arc fault interrupter (DF/CAFI) circuit breaker or other circuit interrupting device is equipped to select from multiple load profiles for use with an on-board arc fault detection algorithm. The DF/CAFI breaker is provided with a selector mechanism to switch between the multiple profiles in the different look up tables preloaded in the breaker firmware. The installer may select a particular look up table with a particular branch load profile for arc events upon installation for an anticipated load profile. After installation, the user or installer may switch to a different Look Up Table with different load profile parameters upon noticing an excess of nuisance tripping.

Abstract: Methods, systems, and portable devices capable of adaptive synthetic positioning while in a dead zone are described. In one method, when a portable device having a Global Navigational Satellite System (GNSS) receiver and a dead zone database enters a dead zone, it determines whether the dead zone database has a record for the dead zone. If it does, it retrieves parameters corresponding to the dead zone from the database and calculates synthetic position solutions using the retrieved parameters while in the dead zone. The portable device may also use the synthetic position solutions to help calculate position solutions when exiting the dead zone. If a dead zone database record does not exist, the portable device determines parameters for calculating synthetic position solutions in the dead zone and a new dead zone database record indicating a set of parameters based on the determined set of parameters is created.

Abstract: A method and apparatus for saving power during synthetic positioning in Global Navigation Satellite System (GNSS) receivers is provided. According to one embodiment, a device includes a Global Navigation Satellite System (GNSS) receiver, and an inertial sensor block. The GNSS receiver is disabled when the device enters a dead zone, and the device uses data from the inertial sensor block and a remotely located database to perform navigation functions.

Abstract: Methods, systems, and portable devices capable of adaptive synthetic positioning while in a dead zone are described. In one method, when a portable device having a Global Navigational Satellite System (GNSS) receiver and a dead zone database enters a dead zone, it determines whether the dead zone database has a record for the dead zone. If it does, it retrieves parameters corresponding to the dead zone from the database and calculates synthetic position solutions using the retrieved parameters while in the dead zone. The portable device may also use the synthetic position solutions to help calculate position solutions when exiting the dead zone. If a dead zone database record does not exist, the portable device determines parameters for calculating synthetic position solutions in the dead zone and a new dead zone database record indicating a set of parameters based on the determined set of parameters is created.

Abstract: Methods, systems, and apparatuses for a portable device capable of receiving satellite navigational system signals to retrieve visibility mask information corresponding to the portable device's current location and/or trajectory are described.

Abstract: Disclosed system and method enable a location-unaware device to know its approximate location by wirelessly near-field coupling it to a geo-proximate location-aware device such as a Global Navigation Satellite System—(GNSS)-enabled mobile phone. The geo-location data are conveyed in accordance with a predefined signaling protocol. Request and response mechanisms within the devices take the form of predefined data packets that convey geo-location and the devices' unique identification (ID) information.

Abstract: Methods, systems, and apparatuses for a portable device capable of receiving satellite navigational system signals to retrieve visibility mask information corresponding to the portable device's current location and/or trajectory are described.

Abstract: Disclosed system and method enable a location-unaware device to know its approximate location by wirelessly near-field coupling it to a geo-proximate location-aware device such as a Global Navigation Satellite System—(GNSS)-enabled mobile phone. The geo-location data are conveyed in accordance with a predefined signaling protocol. Request and response mechanisms within the devices take the form of predefined data packets that convey geo-location and the devices' unique identification (ID) information.