一种广播电视信号监测系统的设计  

The design of one broadcast television signal monitoring system

作　　者：曹军胜[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,长春130033

出　　处：《仪器仪表用户》2014年第1期12-15,共4页Instrumentation

基　　金：国家自然科学基金青年科学基金项目(批准号:61006054);吉林省自然科学基金项目(项目编号:201115125)

摘　　要：介绍了一种广播电视信号监测系统,根据超外差接收机的自动增益控制功能来实现对载波信号强度的测量,通过行同步信号识别电视信号,采用了视频字符叠加技术来显示人机对话信息。整个监测系统硬件简洁,性能可靠。The paper describes a monitoring system of the broadcast television signal.The system can measure the carrier signal strength according to the automatic gain control function of the superheterodyne receiver,and identify the television signal by the line synchronization signal,then show the man-machine dialogue message by the technology of on-screen display.The entire monitoring system hardware is simple and reliable.

关 键 词：广播电视信号 自动增益控制 视频字符叠加 

分 类 号：TN93[电子电信—信号与信息处理]