Pull-down signal detection apparatus, pull-down signal detection method and progressive-scan conversion apparatus

A pull-down signal detection circuit includes an inter-field correlation determination unit configured to determine an inter-field correlation on the basis of a current field signal and a 1-field delay signal, and providing a determination result which indicates a "strong/middle/weak" leve...

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Bibliographic Details
Main Author YAMAUCHI HIMIO
Format Patent
LanguageEnglish
Published 27.04.2010
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
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Summary:A pull-down signal detection circuit includes an inter-field correlation determination unit configured to determine an inter-field correlation on the basis of a current field signal and a 1-field delay signal, and providing a determination result which indicates a "strong/middle/weak" level, an inter-frame correlation determination unit configured to determine an inter-frame correlation on the basis of the current field signal and a 2-field delay signal, and a pull-down signal determination unit configured to determine whether the input video signal is a pull-down signal or not, on the basis of the determination results of the inter-field correlation determination unit and the inter-frame correlation determination unit.
Bibliography:Application Number: US20060443026