US 2003/0077073 A1 · USER SELECTABLE VARIABLE TRICK MODE SPEED

Abstract

Upon user selection of a particular trick mode, the number of pictures that are displayed can be accordingly adjusted to correspond with the selected trick mode speed based on a determined display time. Subsequently, the bandwidth usage can be can be determined to ensure that the channel capacity between a playback device (100) and a remote decoder (136) has not been exceeded. For forward trick modes, in a case where the bandwidth between the playback device (100) and the remote decoder (136) would be exceeded, B-pictures can be uniformly eliminated throughout the playback segment. Where B-pictures were present and they have been eliminated, they can be replaced by dummy B-pictures. Again, if there is still insufficient bandwidth available between the playback device (100) and remote decoder (136), then P-pictures can be eliminated from the playback segment and uniformly replaced by dummy P-pictures.

Claims48

Dependent claims

A method for implementing a selectable variable trick mode playback speed for playback of a compressed video presentation stored on a storage medium, comprising:

responsive to a command for trick mode playback of a portion of the video presentation, determining a display time for displaying a segment of said portion of the video presentation at the selected variable trick mode speed;
selecting pictures to be deleted from said segment to achieve said determined display time during the playback of said portion of the video presentation at the selected variable trick mode speed;
and deleting said selected pictures.

Dependencies are inferred from the claim text.

User selectable variable trick mode speed

Life of this patent

User selectable variable trick mode speed

Life of this patent

Abstract

Claims48