Before revision: Different tuners are used for different television standards such as PAL, NTSC, ATSC, SECAM, DVB-C, DVB-T, DVB-T2, ISDB, T-DMB, open cable.
After revision: Different tuners are used for different television standards such as PAL, NTSC, SECAM, ATSC,DTMB, DVB-C, DVB-T, DVB-T2, ISDB, T-DMB, open cable.