仪器仪表用户
儀器儀錶用戶
의기의표용호
MAIN CONTENTS
2014年
1期
12-15
,共4页
广播电视信号%自动增益控制%视频字符叠加
廣播電視信號%自動增益控製%視頻字符疊加
엄파전시신호%자동증익공제%시빈자부첩가
broadcast television signal%automatic gain control%on-screen display
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。
介紹瞭一種廣播電視信號鑑測繫統，根據超外差接收機的自動增益控製功能來實現對載波信號彊度的測量，通過行同步信號識彆電視信號，採用瞭視頻字符疊加技術來顯示人機對話信息。整箇鑑測繫統硬件簡潔，性能可靠。
개소료일충엄파전시신호감측계통，근거초외차접수궤적자동증익공제공능래실현대재파신호강도적측량，통과행동보신호식별전시신호，채용료시빈자부첩가기술래현시인궤대화신식。정개감측계통경건간길，성능가고。
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.
