无线广播电视自诞生以来,给人类的文化生活带来巨变。但随着技术的不断进步,通讯技术的飞跃发展,广电网、电信网、互联网的迅速崛起,无线广播电视就象一个未老先衰的壮汉,呈现重重暮气,如何摆脱这种低迷局面,是无线广播电视从业者必须思考的问题。而数字电视地面广播的发展给无线广播电视摆脱困境带来生机。 Since its birth, radio and television have brought great changes to the cultural life of mankind. However, with the continuous improvement of technology, the rapid development of communication technology, the rapid rise of radio and television networks, telecommunications networks and the Internet, wireless radio and television are like a brawny old man who has not yet failed, It is a problem that radio and television practitioners must think. The development of digital terrestrial television broadcasting brings vitality to the radio and television.