Trick modes using non-progressive dummy bidirectional predictive pictures

A system for performing a trick mode on a video signal containing a plurality of original pictures, comprising:

• a controller for reading data from a storage medium and outputting the video signal containing the plurality of original pictures;
• and
• a processor programmed to:
• receive a trick mode command;
• and
• selectively insert at least one dummy bidirectional predictive picture in the video signal using field-based prediction to form a trick mode video signal.

A system for performing a trick mode on a video signal containing a plurality of non-progressively scanned original pictures, wherein each of the plurality of non-progressively scanned original pictures contains a display indicator, comprising:

• a controller for reading data from a storage medium and outputting the video signal containing the plurality of original pictures;
• and
• a processor programmed to:
• in response to a trick mode command, selectively repeat at least one of the non-progressively scanned original pictures to convert the video signal to a trick mode video signal;
• and
• selectively modify the display indicator of at least a portion of the plurality of non-progressively scanned original pictures to reflect an intended display order each time a non-progressively scanned original picture is repeated.

A system for performing a trick mode on a video signal containing a plurality of original pictures, comprising:

• a controller for reading data from a storage medium and outputting the video signal containing the plurality of original pictures;
• and
• a processor programmed to:
• in response to a trick mode command, selectively repeating at least one of the original pictures to convert the video signal to a trick mode video signal;
• and
• selectively inserting at least one dummy bidirectional predictive picture in the trick mode video signal using field-based prediction.