基于TW2835的OSD技术研究和实现

Research and Implementation of OSD Based on TW2835

OSD即屏幕菜单调节方式,一般应用于各种视频系统的屏幕显示技术。该文将介绍基于视频处理芯片TW2835的数字硬盘录像机的系统总体结构,并将详细讨论TW2835显示、控制OSD菜单的具体技术。介绍自主设计的克服只能显示英文字符的限制而能显示中文及图片的功能更丰富的GUI界面。

OSD is short for on-screen display,a display technology which is using in all kinds of video system generally.This paper introduces the overall structure of the system which based on the TW2835 DVR,and discusses the specific technical of how TW2835 display and control the OSD menu.The a self-designed GUI interface which not only display English characters but also display Chinese and pictures is introduced.