【作者】 史彩娟； 李文元； 张培芬；

【Author】 SHI Cai-juan~1,LI Wen-yuan~2,ZHANG Pei-fen~2 (1.Information College,Hebei Polytechnic University,Tangshan 063009,China; 2.College of Electronics Information Engineering,Tianjin University,Tianjin 300072,China)

【机构】 河北理工大学信息学院； 天津大学电子信息工程学院；

【摘要】 电视测试信号是评价电视系统质量的重要手段,最为常用的测试信号包括棋盘格信号、多波群信号及R、G、B信号。同步信号用来保证电视图像的正确重现。详细介绍了基于复杂可编程逻辑器件CPLD实现多种电视测试信号和同步信号的方法。采用硬件描述语言VHDL实现CPLD内部逻辑功能设计,提高了系统的稳定性和集成度,增强设计的灵活性和可靠性,同时便于系统功能扩展。更多还原

【Abstract】 Television test signal is the important method to evaluate the quality of the television system, tessellating signal,multi-frequency signal and R、G、B signals are commonly used as the test signals.The synchronous signal ensures the recurrence of the television picture correctly.This paper introduces the method of realizing kinds of television test signals and synchronous signal based on complex programmable logic device CPLD in detail.Hardware description language VHDL is used to implement the design of the logic function in CPLD,which improves the stability and integration of the system and enhances the flexibility and reliability of this design,and furthermore,which makes it easy to expand software functions.更多还原