Patent ID: 6775843
Filing Date: 2004-08-10
Classification: H04N

Abstract:
A mapping method for a digital television, comprising:detecting a virtual channel selected by a user, the virtual channel divided into major and minor channels; obtaining a first physical channel in a first mapping table that maps to the major channel of the virtual channel, the first mapping table being generated during an auto-programming mode to map available physical channels to available major channels; causing the first physical channel to be tuned, and collecting a first VCT from the first physical channel; retrieving a first TTSID assigned to the first physical channel and a CTSID of the virtual channel from the first VCT; and wherein if the first TTSID is equal to the CTSID then the audio and video signals from the first physical channel are decoded and, if the first TTSID is not equal to the CTSID, then a second physical channel from a second mapping table is obtained that maps to the CTSID.