which signaling information is periodically inserted in the additional data the received dtv signal is demodulated including performing channel equalization on the demodulated dtv signal trellis decoding is performed on the channel equalized dtv signal further the additional data from the trellis decoded dtv signal is extracted including removing dummy data from the extracted additional data application_number US 201414282711 A description reference will now be made in detail to the preferred embodiments of the present invention examples of which are illustrated in the accompanying drawings wherever possible the same reference numbers will be used throughout the drawings to refer to the same or like parts for the understanding of an e8 vsb reception system of the present invention the e8 vsb transmission system and multiplexing process disclosed in the korean patent application no 10 2003 0017834 is explained with reference to the attached drawings as follows first of all in the korean patent application no 10 2003 0017834 the recent mpeg 4 video or various supplementary data e g program execution file stock information etc can be transferred via enhanced data as well as the previous mpeg 2 video and dolby sound data in doing so error correction encoding is additionally performed on the enhanced data except main data and u00bd enhanced data and u00bc enhanced data mean data on which encoding is additionally performed at u00bd and u00bc code rates respectively.