Graphics display system with unified memory architecture
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United States of America Patent
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Apr 24, 2007
Grant Date -
Sep 9, 2004
app pub date -
Jan 22, 2004
filing date -
Nov 9, 1998
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A graphics display system integrated circuit is used in a set-top box for controlling a television display. The graphics display system processes analog video input, digital video input, and graphics input. The system incorporates a unified memory architecture that is shared by the graphics system, a CPU, and other peripherals. The unified memory architecture uses real time scheduling to service tasks. Critical instant analysis is used to find a schedule for memory usage that does not affect memory requirements of real time tasks while at the same time servicing non-real-time tasks as needed.
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