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在彩电小信号处理集成电路中,特别是扫描和亮度处理集成电路,大多设有“X射线”保护、ABL自动调整、行逆程脉冲输入、白平衡自动检测、黑电平嵌位等专用检测引脚,这些专用引脚被检测的电压、脉冲、电流发生异常,造成被检测电路的电压、电流超出规定范围,被检测的脉冲异常或丢失时,在小信号处理集成电路内部具有相应的保护功能,进入保护状态。近几年由于微处理器总线系统在彩电中的应用,有的小信号处理保护电路,还可通过总线系统与微处
In the color TV small signal processing integrated circuits, especially scanning and brightness processing integrated circuits, most of them have “X-ray” protection, ABL automatic adjustment, line reverse pulse input, automatic white balance detection, Dedicated test pin, these special pin is detected voltage, pulse, current abnormalities, resulting in the circuit under test voltage and current beyond the specified range, the detected pulse abnormalities or lost, there is a small signal processing integrated circuit within the corresponding Protection function, enter the protection state. In recent years due to the microprocessor bus system in color TV applications, and some small signal processing protection circuit, but also through the bus system and micro