Digital map system
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United States of America Patent
Stats
-
Oct 24, 1989
Grant Date -
N/A
app pub date -
May 11, 1988
filing date -
May 11, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A digital mapping display system for an aircraft wherein map data from a mass memory unit is periodically loaded into RAM in the form of a cache memory in accordance with the aircraft trajectory. The cache memory is randomly addressable within the physical address space of a control processor, individual segments of the cache memory being loaded with map data and updated while other segments are being displayed, thereby avoiding the inherent delay of accessing the mass memory unit and addressing the entire RAM array. Parallel processing of map data and symbology facilitate a real-time display.
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