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电视作为现代社会娱乐、接收信息的大众工具曾经历了从黑白到彩色的转变,如今又从模拟时代进入数字时代,与前一次相比,这是一次更具历史意义的飞跃。数字时代的电视不但具有更美丽的图像和震撼力更强的声音,而且成为人们交互式生活的窗口,接收数字放送信号的数字网络电视将从此改变在人们心中的地位。真正的数字彩电主要有以下表现: 1、高画质化和高音质化使电视的影像和声音与以前完全不同 2、更多的频道选择为人们带来丰富多彩的节目
As a modern social entertainment, mass media tools for receiving information have undergone a shift from black and white to color. Nowadays they have entered the digital age from the analog era. This is a more historical leap compared with the previous one. Digital television not only has more beautiful images and more powerful sound, but also become a window for people’s interactive life. Digital TV receiving digital broadcasting signals will change the status of people’s hearts. The real digital TV has the following main performance: 1, high-definition and high-quality audio and video so completely different from the previous video 2, more channel choices for people to bring rich and colorful programs