摘要
为解决车载视频系统中查看各种信息数据必须切换视频信号的问题,把字符叠加技术引入到车载视频系统中.通过对字符叠加(OSD On Screen Display)技术原理的分析,利用字符叠加芯片、视频信号处理芯片、存储芯片等设计出一种新型车载视频字符叠加系统.这种新型视频字符叠加系统可以将字符信息和动态的视频节目同时显示于电视屏幕上,实现了在汽车上观看视频节目的同时又可以查看许多必要的汽车行驶参数的功能.
In order to query all kinds of data of vehicle,we often need to switch correlated video signals.We introduce the OSD(on screen display) technique into the vehicle video system in this paper.An OSD controller,a video signal processing chip,a storage chip and a single-chip micro controller are used in the system.Characters and dynamic video program are displayed on the screen synchronously.The video OSD system designed realizes the function that many necessary parameters of vehicle travel can be queried at the same time the other video program observed.
出处
《厦门大学学报（自然科学版）》
CAS
CSCD
北大核心
2005年第2期202-205,共4页
Journal of Xiamen University：Natural Science
