Virtual channel table for a broadcast protocol and method of broadcasting and receiving broadcast signals using the same

  • US 8,707,367 B2
  • Filed: 02/10/2012
  • Issued: 04/22/2014
  • Est. Priority Date: 10/08/1999
  • Status: Expired due to Term
First Claim
Patent Images

1. A method of controlling display of an inactive channel in a digital broadcast receiver, the method comprising:

  • receiving in the receiver a digital broadcast signal including a virtual channel table (VCT), the VCT including a version_number field, a section_number field, a last_section_number field, a short_name field, a major_channel_number field, a minor_channel number_field, a modulation_mode field, a carrier_frequency field, a channel_TSID field, a program number field, an ETM_location field, and an access_controlled field,parsing the VCT;

    identifying a value of the program number field,wherein for an inactive channel the program number field is set to zero,wherein the inactive channel is a channel that is not presently carrying a broadcast program;

    however, the same inactive channel is scheduled to carry a broadcast program at a predetermined later time from a broadcasting station without local viewer interaction; and

    controlling display of the virtual channel when the virtual channel is determined to be inactive and selected by a user, wherein the inactive channel is capable of being automatically skipped by the receiver.

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