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Single chip TV colour decoder - operates with NTSC, PAL or secam and automatically switches its own circuits accordingly

机译:单芯片电视彩色解码器-与NTSC,PAL或secam配合使用,并相应地自动切换其自身的电路

摘要

A TV receiver colour decoder, constructed as a single integrated circuit, identifies whether is is being fed with NTSC, PAL or SECAM colour signals and automatically changes over its own circuits to suit. Amplitude modulated NTSA or PAL signals are previously separated from SECAM frequency modulated signals and fed into different inputs of the decoder. The decoder separates the colour synchronising signal and identifies the system from its characteristics. Controlled by line synchronising pulses, it performs whichever type of switching is required between lines. The signal is then demodulated and decoded to give the three colour signals, R,G.B. as outputs. Two quartz resonators, three LC resonant circuits and a delay line are required to be connected to the circuit.
机译:构造为单个集成电路的电视接收器彩色解码器,确定是否正在向其馈送NTSC,PAL或SECAM彩色信号,并自动切换其自身的电路以适合。预先将调幅的NTSA或PAL信号与SECAM调频信号分开,并馈入解码器的不同输入端。解码器分离颜色同步信号,并根据其特征识别系统。由线路同步脉冲控制,它执行线路之间所需的任何类型的切换。然后对该信号进行解调和解码,以给出三种颜色信号R,G.B。作为输出。需要将两个石英谐振器,三个LC谐振电路和一条延迟线连接到该电路。

著录项

  • 公开/公告号DE2943271A1

    专利类型

  • 公开/公告日1981-05-07

    原文格式PDF

  • 申请/专利权人 PHILIPS PATENTVERWALTUNG GMBH;

    申请/专利号DE19792943271

  • 发明设计人 SUHRMANNDIPL.-PHYS.ROBERT;

    申请日1979-10-26

  • 分类号H04N9/42;

  • 国家 DE

  • 入库时间 2022-08-22 15:14:09

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