Flight recorders with static electronics memory
First Claim
1. A flight-recorder of the type comprising an enclosed protection chassis crossed by electric-power connectors and by signal connectors ending at memory means inside the protection chassis, and having non-volatile, electrical rewrite memory circuits which can be accessed by said signal connectors to store flight data, the memory means having at least one memory-circuit card and one control circuit card suitable as an interface with the electrical rewrite memory circuits, such a memory-circuit card comprising means for receiving an auxiliary memory-access connector to access data in the memory circuits thereof in the event of operational incapacity of the control card.
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Accused Products
Abstract
A flight recorder (MPV) is contained within a two-walled chassis (11, 13) of which the walls are separated by a fire-resistant material (12). The memory means consist of hybrid circuits (H1-H8) of the EEPROM type. These are associated with a control card that may act as a fuse, The hybrid circuits (H1-H8) are mounted so as to be pressure-resistant. The flight parameters are alternating recorded on two memory cards (MC1 and MC2) and also in their hybrid circuits.
35 Citations
24 Claims
- 1. A flight-recorder of the type comprising an enclosed protection chassis crossed by electric-power connectors and by signal connectors ending at memory means inside the protection chassis, and having non-volatile, electrical rewrite memory circuits which can be accessed by said signal connectors to store flight data, the memory means having at least one memory-circuit card and one control circuit card suitable as an interface with the electrical rewrite memory circuits, such a memory-circuit card comprising means for receiving an auxiliary memory-access connector to access data in the memory circuits thereof in the event of operational incapacity of the control card.
- 11. A flight recorder for recording flight parameters of the type comprising an enclosed protection chassis crossed by electric-power connectors and by signal-connectors ending in memory means inside the protection chassis and further comprising non-volatile, electric rewrite memory circuits accessible through said connectors, comprising a plurality of memory-circuit cards, each memory circuit card comprising a plurality of said electric rewrite memory circuits, and means for feeding consecutive measurements to be recorded alternatingly to the electric rewrite memory circuits of at least two of said memory-circuit cards, and means for feeding consecutive sets of data to be recorded in each memory-circuit card sequentially in a different electric rewrite memory circuit on the memory-circuit card.
- 13. A flight recorder of the type comprising an enclosed protection chassis crossed by electric-power connectors and by signal-connectors ending in memory means inside the protection chassis and comprising non-volatile, electric rewrite memory circuits accessible through said signal-connectors, comprising at least one memory-circuit card having a plurality of memory zones, and means for alternatingly recording flight parameters in two different memory zones of the same memory-circuit card whereby, in the event of total or partial failure of one of the two zones all the flight data recorded on the circuit card will be available at half rate.
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15. A flight recorder of the type comprising a protection chassis crossed by electric-power connectors and by signal-connectors ending in logic means inside the protection chassis and further comprising a plurality of memory-circuit assemblies each memory-circuit assembly comprising a plurality of non-volatile, electric rewrite memory circuits accessible through said signal-connectors for recording flight parameters, comprising means for generating a sequence of "flight module" sets of data, each set containing an integral number of cycles, each cycle comprising all of the flight parameters to be recorded, and means for separately recording each of the generated sets of data in the electric rewrite memory circuits of at least two memory-circuit assemblies.
Specification