Graphics display system with window descriptors
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United States of America Patent
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Oct 6, 2009
Grant Date -
Aug 5, 2004
app pub date -
Jan 21, 2004
filing date -
Nov 9, 1998
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A graphics integrated circuit chip is used in a set-top box for controlling a television display. The graphics chip processes analog video input, digital video input, a graphics input and an audio input simultaneously. The chip uses window descriptors to describe logical surfaces, or windows, of graphics information to be displayed on the screen. The chip incorporates a unified memory architecture that provides a high level of system performance while conserving memory bandwidth and chip size. Video and graphics scaling capabilities as well as anti-flutter filtering capability are provided.
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