Content advisory rating preservation during personal video recorder trick play modes

摘要

A personal video recorder records and plays back a television program in a user-defined playback mode while preserving content advisory rating information. A decoder parses a digital transport stream comprising transport stream packets containing the television program and generates navigation data. A source of content advisory rating information corresponding to said television program is provided. This source of content advisory rating information may be within the digital transport stream. A non-volatile storage unit is used for saving each of the frames of the television program in a transport stream file and for saving the navigation data in a navigation data file. The navigation data includes pointers that point to a location of each of the frames of the television program in the transport stream file and content advisory rating information associated with each of the frames from the source of content advisory rating information. A processor for executes an algorithm that processes the transport stream file according to the user-defined playback mode. Content advisory rating information that corresponds to frames that are to be shown in the user-defined playback mode is taken from the navigation data file and inserted in the video output signal.