Abstract: Various systems may benefit from appropriate thermal protection. For example, various flight recorder systems may benefit from thermal isolation of a flight recorder memory core. A system can include a memory core of a flight recorder. The system can also include an inner chamber housing the memory core. The system can further include an outer chamber housing the inner chamber with a vacuum between the inner chamber and the outer chamber. The system can additionally include a signal path from avionics equipment to the memory core through the outer chamber and the inner chamber. The system can also include a power path for the memory core through the outer chamber and the inner chamber.

Abstract: Various systems may benefit from appropriate thermal protection. For example, various flight recorder systems may benefit from thermal isolation of a flight recorder memory core. A system can include a memory core of a flight recorder. The system can also include an inner chamber housing the memory core. The system can further include an outer chamber housing the inner chamber with a vacuum between the inner chamber and the outer chamber. The system can additionally include a signal path from avionics equipment to the memory core through the outer chamber and the inner chamber. The system can also include a power path for the memory core through the outer chamber and the inner chamber.

Abstract: Various systems may benefit from appropriate thermal protection. For example, various flight recorder systems may benefit from a vacuum protected flight recorder memory. A system can include a memory core of a flight recorder. The system can also include an inner chamber housing the memory core. The system can further include an outer chamber housing the inner chamber with a vacuum between the inner chamber and the outer chamber. The system can additionally include a signal path from avionics equipment to the memory core through the outer chamber and the inner chamber. The system can also include a power path for the memory core through the outer chamber and the inner chamber.

Abstract: Various systems may benefit from appropriate thermal protection. For example, various flight recorder systems may benefit from thermal isolation of a flight recorder memory core. A system can include a memory core of a flight recorder. The system can also include an inner chamber housing the memory core. The system can further include an outer chamber housing the inner chamber with a vacuum between the inner chamber and the outer chamber. The system can additionally include a signal path from avionics equipment to the memory core through the outer chamber and the inner chamber. The system can also include a power path for the memory core through the outer chamber and the inner chamber.

Abstract: Various systems may benefit from appropriate thermal protection. For example, various flight recorder systems may benefit from a vacuum protected flight recorder memory. A system can include a memory core of a flight recorder. The system can also include an inner chamber housing the memory core. The system can further include an outer chamber housing the inner chamber with a vacuum between the inner chamber and the outer chamber. The system can additionally include a signal path from avionics equipment to the memory core through the outer chamber and the inner chamber. The system can also include a power path for the memory core through the outer chamber and the inner chamber.

Abstract: Various communication systems may benefit from the appropriate suppression of unnecessary transmissions. For example, certain position reporting systems may benefit from suppressing transmission of data from position reporting beacons using geographic location. A method can include determining a current position of a vehicle. The method can also include comparing the current position of the vehicle to a position-reporting mask. The method can further include reporting the position of the vehicle conditionally based on the comparison to the mask.

Abstract: Various systems may benefit from appropriate triggers to action. For example, various deployable safety devices, such as emergency locator transmitters and flight recorders, may benefit from a multiple input release mechanism. A method can include identifying the presence of at least one crash indicator. The method can also include performing an analysis of aircraft distress based on aircraft parameters other than the at least one crash indicator to provide an analysis result of aircraft distress. The method can further include triggering the release of a safety device contingent upon the presence of the at least one crash indicator being accompanied by a positive result of aircraft distress.

Abstract: A system and method for storing data in a linked list memory architecture maintains several key list parameters. When data to be stored is received, a memory manager determines the list in which the data belongs and retrieves several of the parameters. The parameters retrieved indicate the address of the current location at which the received data is to be stored and the address of the next location that is to be linked to the current list. The memory manager writes the data to the current location pointed to by the first address and writes the second address into a pointer field in that current location. Because the address of the next location in the list is determined before data is written to the current location, this next address can be written in the same cycle in which the data is written.

Abstract: A packet processor uses service priority and loss priority to designate a class of service for packet data. The service priority is used to determine the priority by which packets are routed out of the packet processor. The loss priority is used to determine which packets, if any, are discarded when buffer fullness exceeds a predetermined threshold. When a packet is received, the fullness of the packet buffer and/or a queue within the buffer is checked to determine whether a threshold is received. A decision is made whether to discard the packet based on the loss priority and the buffer fullness. A buffer manager, examines the fullness of each queue within the buffer and determines which class of packets to read out of the buffer.

Abstract: A high-speed floating point conversion apparatus and method are disclosed, with special reference to selectable conversion of "source" IEEE format numbers to any of the "destination" IBM, DEC, or SEL formats. In the preferred embodiment, the exponent is input to a shift control block. The exponent is converted to a different base, resulting in a remainder. The remainder of the exponent base conversion is input to the shift position control input of a shift register (preferably a barrel shifter) which has received the fraction (or mantissa) of the original floating point number. The fraction is shifted an amount necessary to compensate for the exponent's base conversion. The shift position control bits are available after a very short period of time, so that the shifting process of the barrel shifter is also completed quickly. The exponent and shifted fraction (or mantissa) are then input to format conversion units which format the data bitwise as necessary for a particular output format.