I solved this issue perfectly by help of TBS. Thank you Steve.
CentOS is a good platform of TBS6704 for using not only ATSC-T but also ATSC-C. I got the recent installation procedure for CentOS7.
1.update to new kernel
#rpm --import
https://www.elrepo.org/RPM-GPG-KEY-elrepo.org#rpm -Uvh
http://www.elrepo.org/elrepo-release-7. ... noarch.rpm#yum --enablerepo=elrepo-kernel install kernel-lt-devel kernel-lt -y
#grub2-set-default 0
2.Restart to load the new kernel and install gcc unzip
#yum -y install gcc
#yum -y install unzip
#reboot
3.Install some library
#yum -y install perl-devel perl-ExtUtils-CBuilder perl-ExtUtils-MakeMaker
#yum -y install patchutils
#yum -y install patch
4.Install the SHA
#wget
https://sourceforge.net/projects/moipro ... z/download -O Digest-SHA-5.93.tar.gz
#tar xvf Digest-SHA-5.93.tar.gz
#cd Digest-SHA-5.93
#perl Makefile.PL
#make && make install
5.Install Perl
#wget
https://sourceforge.net/projects/moipro ... p/download -O perl-proc-processtable-master.zip
#unzip perl-proc-processtable-master.zip
#cd perl-proc-processtable-master
#perl Makefile.PL
#make && make install
6.Start install the open source driver
# lspci -vv | grep 6704 (H/W가 존재하는지 확인)
# wget
http://www.tbsdtv.com/download/document ... 16.tar.bz2# sudo rm -rf /lib/modules/`uname -r`/kernel/drivers/media/
# tar jxvf media_build-2017-1016.tar.bz2
# cd media_build
# yum install dpkg dpkg-dev
# ./install.sh
# reboot
# dmesg | grep frontend