Patent Number: 7,085,324

Title: Communication system in digital television

Abstract: A VSB communication system or transmitter for processing supplemental data packets with MPEG-II data packets includes a VSB supplemental data processor and a VSB transmission system. The VSB supplemental data processor includes a Reed-Solomon coder for coding the supplemental data to be transmitted, a repetition coder for inserting repetion data to an intereaved supplemental data for generating a predefined sequence, a header inserter for inserting an MPEG header to the supplemental data having the repetion code inserted therein, a multiplexer for multiplexing an MPEG data coded with the supplemental data having the MPEG header added thereto in a preset multiplexing ratio and units. The output of the multiplexer is provided to an 8T-VSB transmission system for modulating a data field from the multiplexer and transmitting the modulated data field to a VSB reception system.

Inventors: Choi; In Hwan (Seoul, KR), Gu; Young Mo (Seoul, KR), Kang; Kyung Won (Seoul, KR), Kwak; Kook Yeon (Kyonggi-do, KR)

Assignee: LG Electronics Inc.

International Classification: H04N 7/12 (20060101)

Expiration Date: 8/01/02018