US 6,760,077 B2 · VSB reception system with enhanced signal detection for processing supplemental data

Abstract

A VSB reception system includes a sequence generator for decoding a symbol corresponding to the supplemental data and generating a predefined sequence included in the supplemental data at VSB transmission system. The reception system also includes a modified legacy VSB receiver for processing the data received from the VSB transmission system in a reverse order of the VSB transmission system by using the sequence, and a demultiplexer for demultiplexing the data from the modified legacy VSB receiver into the MPEG data and the supplemental data. The VSB reception system also includes a supplemental data processor for processing the supplemental data segment from the demultiplexer in a reverse order of the transmission system, to obtain the supplemental data, thereby carrying out the slicer prediction, decoding, and symbol decision more accurately by using the predefined sequence, to improve a performance.

Claims24

Dependent claims

A VSB reception system for receiving and decoding an input signal comprising an MPEG data segment and a supplemental data segment transmitted from a VSB transmission system, the VSB reception system comprising:

a sequence generator for decoding a symbol corresponding to the supplemental data segment and generating a predefined sequence encoded with the supplemental data segment;
a modified legacy VSB receiver for processing the input signal received from the VSB transmission system in a reverse order of the VSB transmission system and outputting a derandomized data signal;
a demultiplexer for demultiplexing the derandomized data signal from the modified legacy VSB receiver into the MPEG data segment and an encoded supplemental data segment;
and
a supplemental data processor for decoding the encoded supplemental data segment from the demultiplexer to obtain the supplemental data segment.

2 more elements

a modified legacy VSB receiver for processing the input signal received from the VSB transmission system in a reverse order of the VSB transmission system and outputting a derandomized data signal;
a demultiplexer for demultiplexing the derandomized data signal from the modified legacy VSB receiver into the MPEG data segment and an encoded supplemental data segment;
and
a supplemental data processor for decoding the encoded supplemental data segment from the demultiplexer to obtain the supplemental data segment, wherein the supplemental data processor includes:
an MPEG header remover for removing three MPEG header bytes from the supplemental data segment received from the demultiplexer;
a null sequence remover for removing the null sequence inserted to the supplemental data packet;
and
a Reed-Solomon decoder for subjecting a null sequence remover output to Reed-Solomon decoding.

5 more elements

Dependencies are inferred from the claim text.

VSB reception system with enhanced signal detection for processing supplemental data

Life of this patent

VSB reception system with enhanced signal detection for processing supplemental data

Life of this patent

Abstract

Claims24