电视图象信号的数字处理设备通常主要由一些数字集成电路组成。这些集成电路的功能及输入输出管脚也不难查到,因此,按照设备的原理图我们不难找出数据从输入到输出的整个流程。然而这并不意味着我们就明白设备是如何工作的了,实际上还必须了解这些功能如 Digital processing equipment for television video signals usually consists mainly of digital integrated circuits. The function of these integrated circuits and input and output pins are not difficult to find, therefore, according to the schematic diagram of the device we can easily find the data from input to output of the entire process. This does not mean, however, that we understand how devices work, and in fact we must understand these