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二、音视频处理系统电路工作原理分析图3为三星VCD解码板视频信号处理电路框图。数字图像信号由CL—480的(56)～(94)脚送往VIC101(KDA0408)中进行数模转换,这里KDA408的⒁～⒇脚为8位的R数字信号,(22)～(30)脚输入的是8位G数字信号,(31)～(39)脚为8位的B数字信号,三数字信号在VIC101内经缓冲器、译码器、锁存器和D/A
Second, the audio and video processing system circuit analysis of the principle of Figure 3 for the Samsung VCD decoder board video signal processing circuit block diagram. The digital image signal is sent to VIC101 (KDA0408) by the CL-480’s (56) ~ (94) feet for digital-to-analog conversion. Here the DA ~ ⒇ pin of the KDA408 is an 8-bit R digital signal. The foot inputs 8 digital signals of G, the digital signals of B of 8 of 31-39 feet, the three digital signals in VIC101 are gone through the buffer, decipher, latch and D / A