Robust layered 3:2 pulldown film mode source detection
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United States of America Patent
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Issued Date -
Sep 16, 2004
app pub date -
Mar 8, 2004
filing date -
Mar 13, 2003
priority date (Note) -
Abandoned
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Abstract
A robust layered 3:2 pulldown film mode source detection method is proposed. The method provides video signals of three fields, a current field, a last field and a next field. The video signals are used to determine a film source. The method comprises steps of: define a plurality of layers and each layer has a threshold and a counter; compare each difference between pixels of the last field and the next field with each layer's threshold to obtain a comparing result; according to said comparing result, determine a change of said counter of each layer; and determine a result sequence by said counter to decide said film mode source.
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