Patent ID: 7599348

Claim:
An enhanced 8-level vestigial sideband (E8-VSB) reception system which receives an E8-VSB signal transmitted from an E8-VSB transmission system, the E8-VSB transmission system which multiplexes first enhanced data coded at ½ code rate and second enhanced data coded at ¼ code rate by 164-byte packet unit according to a multiplexing format of E8-VSB map information inserted in a reserved area of a field sync signal and further pre-processes the multiplexed enhanced data packets to output as 188-byte transport packet and multiplexes the pre-processed enhanced data and normal data by 188-byte transport packet unit according to the multiplexing format of the E8-VSB map information inserted in the reserved area of the field sync signal, the E8-VSB reception system comprising: a tuner for receiving an E8-VSB modulated RF signal via an antenna, the tuner for selecting an RF signal of a specific channel by tuning and converting the selected RF signal to an IF signal; a demodulator for converting the IF signal from the tuner to a baseband signal; an E8-VSB map recovery for detecting the field sync signal and a field identifying signal within a frame from an output of the demodulator by performing frame sync recovery, the E8-VSB map recovery for extracting the E8-VSB map information inserted in the reserved area of the field sync signal using the detected field sync and identifying signals and for decoding the extracted E8-VSB map information, the E8-VSB map recovery for generating various kinds of E8-VSB data attributes according to the E8-VSB map information; a channel equalizer for compensating channel distortion included in the VSB-modulated signal by receiving the demodulator output and the E8-VSB data attributes of the E8-VSB map recovery; and an E8-VSB channel decoder/multiplexer for decoding normal data, first enhanced data, and second enhanced data from a signal equalized in the channel equalizer using the E8-VSB map information of the E8-VSB map recovery, the E8-VSB data attributes, and the field sync signal.