Abstract: A computing network uses Time Division Multiplexing (TDM) to divide the time on a bus into a plurality of frames, each frame having a plurality of time slots. Each time slot is assigned no more than one of the plurality of devices within a collision domain, the assignments indicating the identity of the device permitted to transmit packets onto the network during the assigned time slot. A bus cadence unit simultaneously sends an epoch packet initiating the frame. The epoch packet contains a time slot assignment table containing the time slot assignments, the device identification, as well as a time slot offset and duration. Each device on the network is configured to measure a frame interval between repeating epoch packets. The measured frame interval is further processed in each receiving node to obtain a calibrated frame interval. The calibrated frame interval is used to accurately synchronize transmissions of data from the various devices onto the network.

Abstract: An airport map display system for an aircraft displays the airport paved surfaces and structures to a pilot or crew member. The system displays runways, taxiways, connectors, ramps, gates, and buildings. Hold and yield points may also be displayed. A compact set of specific data points and associated pavement width values is used to store unique data for each airport.

Abstract: An airport map display system provides situational awareness to a pilot of an airport's runways, taxiways, and other features relative to the pilot's aircraft. Data representative of an airport map is translated and communicated between aircraft systems using a data interchange method that facilitates efficient throughput of information used to represent an airport map. In addition, data representative of taxi routes, modified taxi routes, and current position of the aircraft at the airport are also translated and communicated using a compact data interchange method. Airport map data is scaled so that it is compatible with display systems previously incompatible with displaying some airport maps. Aircraft equipped with raster displays are manipulated to display map symbology by redefining existing vector group labels. For retrofit applications, the airport map display system is activated when a preexisting input (e.g., an “ARPT” button) is activated when a taxi-related page is active.

Abstract: A taxi planning system for aircraft provides an intuitive user interface for entering and selecting taxi plans quickly and easily. The system includes predefined reduced selection menus that prompt the pilot with feasible taxi choices. Predefined standard routes allow the pilot to select a taxi route with a minimum of keystrokes and in a minimum of time. A display screen communicates the selection menus and standard routes to the pilot who makes a selection with as little as one keystroke. A database comprising a linked list structure facilitates a flexible system that is able to represent a wide variety of airport runways, taxiways, gates, ramps, and other airport structures. The selected taxi route is communicated to other aircraft systems such as head-down displays, head-up displays, flight management computers, communication systems, and the like.

Abstract: An airport feature display system for aircraft provides visual guidance cues and awareness to track the specified taxi path on a HUD. The guidance cues include symbology representative of the position of selected airport features such as runway and taxiway edges, taxi routes, and airport signage. Data representative of the airport features is communicated between aircraft systems using a data interchange method that facilitates efficient throughput of the large quantities of data required to represent the airport features.

Abstract: A computing network uses Time Division Multiplexing (TDM) to divide the time on a bus into a plurality of frames, each frame having a plurality of time slots. Each time slot is assigned no more than one of the plurality of devices within a collision domain, the assignments indicating the identity of the device permitted to transmit packets onto the network during the assigned time slot. A bus cadence unit simultaneously sends an epoch packet initiating the frame. The epoch packet contains a time slot assignment table containing the time slot assignments, the device identification, as well as a time slot offset and duration. Each device on the network is configured to measure a frame interval between repeating epoch packets. The measured frame interval is further processed in each receiving node to obtain a calibrated frame interval. The calibrated frame interval is used to accurately synchronize transmissions of data from the various devices onto the network.

Abstract: An airport map display system for an aircraft displays the airport paved surfaces and structures to a pilot or crew member. The system displays runways, taxiways, connectors, ramps, gates, and buildings. Hold and yield points may also be displayed. A compact set of specific data points and associated pavement width values is used to store unique data for each airport.

Abstract: An airport map display system provides situational awareness to a pilot of an airport's runways, taxiways, and other features relative to the pilot's aircraft. Data representative of an airport map is translated and communicated between aircraft systems using a data interchange method that facilitates efficient throughput of information used to represent an airport map. In addition, data representative of taxi routes, modified taxi routes, and current position of the aircraft at the airport are also translated and communicated using a compact data interchange method. Airport map data is scaled so that it is compatible with display systems previously incompatible with displaying some airport maps. Aircraft equipped with raster displays are manipulated to display map symbology by redefining existing vector group labels. For retrofit applications, the airport map display system is activated when a preexisting input (e.g., an “ARPT” button) is activated when a taxi-related page is active.

Abstract: An airport feature display system for aircraft provides visual guidance cues and awareness to track the specified taxi path on a HUD. The guidance cues include symbology representative of the position of selected airport features such as runway and taxiway edges, taxi routes, and airport signage. Data representative of the airport features is communicated between aircraft systems using a data interchange method that facilitates efficient throughput of the large quantities of data required to represent the airport features.

Abstract: A taxi planning system for aircraft provides an intuitive user interface for entering and selecting taxi plans quickly and easily. The system includes predefined reduced selection menus that prompt the pilot with feasible taxi choices. Predefined standard routes allow the pilot to select a taxi route with a minimum of keystrokes and in a minimum of time. A display screen communicates the selection menus and standard routes to the pilot who makes a selection with as little as one keystroke. A database comprising a linked list structure facilitates a flexible system that is able to represent a wide variety of airport runways, taxiways, gates, ramps, and other airport structures. The selected taxi route is communicated to other aircraft systems such as head-down displays, head-up displays, flight management computers, communication systems, and the like.