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前言电视最早是作为广播技术发展起来的。电视广播比一般的无线电广播迈进了一大步,它不仅能传送音响,而且能把人和景物的三维空间信息变成对时间的一维电信号发送出去,传输至远方。通过电视接收设备,人们不仅能听到声音,而且还能看到图象。这就实现了神话
Preface Television was first developed as a broadcasting technology. Television broadcasting is a big step forward in general radio broadcasting. It can not only transmit audio but also transmit the three-dimensional information of people and scenery to the one-dimensional electrical signal of time and transmit it to the distant place. Through television receiving equipment, people can not only hear the sound, but also to see the image. This realizes the myth