Fast motion trick mode using dummy bidirectional predictive pictures
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United States of America Patent
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N/A
Issued Date -
Aug 21, 2003
app pub date -
Apr 11, 2002
filing date -
Oct 23, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
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.
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