Fast motion trick mode using dummy bidirectional predictive pictures

The invention concerns a method ( 200 or 300 ) and system ( 100 ) for performing a trick mode operation on a video signal containing a plurality of progressively scanned original pictures. The method ( 200 ) includes the step of selectively skipping ( 214 ) at least one of the original pictures to c...

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Bibliographic Details
Main Author LIN SHU,WILLIS DONALD HENRY
Format Patent
LanguageEnglish
Published 03.01.2007
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
PHYSICS
PICTORIAL COMMUNICATION, e.g. TELEVISION
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Summary:The invention concerns a method ( 200 or 300 ) and system ( 100 ) for performing a trick mode operation on a video signal containing a plurality of progressively scanned original pictures. The method ( 200 ) includes the step of selectively skipping ( 214 ) at least one of the original pictures to convert the video signal to a trick mode video signal in response to a trick mode command and the step of selectively inserting ( 216 ) at least one dummy bidirectional predictive picture in the trick mode video signal. In addition, the method ( 300 ) can include the step of monitoring ( 316 ) the trick mode video signal so that the dummy bidirectional predictive picture is selectively inserted when the bit rate exceeds a predetermined threshold. Display indicators of certain pictures in the trick mode video signal can also be modified ( 226 ) ( 328 ) to reflect an intended display order.
Bibliography:Application Number: CN2002820747