Video composition circuit for performing vertical filtering to α-blended video data and successively input video data
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United States of America Patent
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Jun 30, 2009
Grant Date -
Aug 24, 2006
app pub date -
Apr 1, 2004
filing date -
Apr 1, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
When transferring data from an external storage unit (101) to a video composition circuit, the transferred data and data stored in an internal storage unit (104) of the video composition circuit are subjected to vertical filtering using a video processing circuit (103). The video processing circuit (103) having a function of an OSD output unit, a function of a sub video output unit, and a function of a main video output unit. Additionally, the video processing circuit (103) having an .alpha.-blending function, to write the data over the internal storage unit (104), thereby performing display.
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