Patent ID: 8233089
Filing Date: 2012-07-31
Classification: H04N

Abstract:
1. A method of synchronizing visual and audio data for a television system, said method comprising: receiving and processing digital data from a broadcaster at a remote location to provide video, audio and/or auxiliary data for a television system including a broadcast data receiver, a display for displaying visual data thereon and audio means for allowing audio data to be sounded via said system, the display or audio means television system being a source of delay for displaying the video data or sounding the audio data; and said method includes the steps of undertaking one of displaying a visual indicator on said display or sounding an audio indicator via said audio means and, after a time delay or period of time, undertaking the other of displaying the visual indicator or sounding the audio indicator, and; adjusting the period of time between the display of said visual indicator and the sounding of said audio indicator, the period being adjustable by a user of said television system using user synchronization means provided in or controlled by the broadcast data receiver to achieve a time period adjustment setting to synchronize the audio data sounded with the visual data displayed and wherein said time period adjustment setting is used as a presentation time stamp (PTS) to override an existing PTS or to reset a PTS of an incoming data stream received by, or stored data at, the broadcast data receiver to allow a user selected level of synchronization between said visual and audio data and the visual and audio indicators used are independent of, and distinguishable from, the visual and audio data received by said television system from a remote source.