电子器件
電子器件
전자기건
JOURNAL OF ELECTRON DEVICES
2014年
1期
108-112
,共5页
视频字符叠加%IA6459%DSP5509%上位机
視頻字符疊加%IA6459%DSP5509%上位機
시빈자부첩가%IA6459%DSP5509%상위궤
character on screen display%IA6459%DSP5509%upper computer
随着在屏显示技术的广泛应用,OSD设备倍受青睐。设计了一种以DSP5509为核心,通过串口与下位机的通信,基于专用OSD( On Screen Display)芯片IA6459的视频字符叠加系统。系统主要由控制,视频字符叠加和上位机通信3部分组成。控制部分以DSP5509为核心组成,视频字符叠加部分以IA6459为核心组成,上位机通信部分使用Vb编写可视化用户界面。经过实际系统验证,可以无损的在视频上叠加所需字符。
隨著在屏顯示技術的廣汎應用,OSD設備倍受青睞。設計瞭一種以DSP5509為覈心,通過串口與下位機的通信,基于專用OSD( On Screen Display)芯片IA6459的視頻字符疊加繫統。繫統主要由控製,視頻字符疊加和上位機通信3部分組成。控製部分以DSP5509為覈心組成,視頻字符疊加部分以IA6459為覈心組成,上位機通信部分使用Vb編寫可視化用戶界麵。經過實際繫統驗證,可以無損的在視頻上疊加所需字符。
수착재병현시기술적엄범응용,OSD설비배수청래。설계료일충이DSP5509위핵심,통과천구여하위궤적통신,기우전용OSD( On Screen Display)심편IA6459적시빈자부첩가계통。계통주요유공제,시빈자부첩가화상위궤통신3부분조성。공제부분이DSP5509위핵심조성,시빈자부첩가부분이IA6459위핵심조성,상위궤통신부분사용Vb편사가시화용호계면。경과실제계통험증,가이무손적재시빈상첩가소수자부。
With the wide use of the on screen display technology,OSD equipments are welcomed by many users. A displaying vedio and character system was designed. Based on DSP5509 as a cover, communicating with lower computer through the serial ports, and using the dedicated chip IA6459, a display controller was proposed for displaying texts and graphics on the TV screen. The system made of control circuit,overlay circuit between video and character and upper communication circuit. Control circuit contains DSP5509,upper computer communication circuit includes visual user interface compiled by Visual Basic. The interface circuit between IA6459 and DSP5509 is given. In the end,the system can superpose the desired characters on the video.
