一种基于像素自适应仲裁的OSD分层混合结构设计  

An OSD mixing structure based on pixel adaptive arbitration

作　　者：张贻雄[1] 刘鹏[1] 王维东[1] 姚庆栋[1] 俞国军[1] 

机构地区：[1]浙江大学信息与电子工程学系,浙江杭州310027

出　　处：《电路与系统学报》2008年第4期19-23,共5页Journal of Circuits and Systems

基　　金：国家863计划资助(2002AA1Z1140);浙江省科技计划重点项目(2004C21052);霍英东教育基金(94031)

摘　　要：数据混合是OSD分层显示的关键技术之一。本文基于OSD的分层结构及数据组织结构特点,提出一种OSD分层显示的单混合结构,该结构采用基于像素自适应仲裁的策略,按照层优先级次序,对多个OSD图层信号实时地切换显示。FPGA验证结果表明,该结构在满足OSD分层混合显示、实现菜单选择鼠标控制等高级人机对话功能的前提下,其硬件资源开销比多混合结构节省约33%以上,且具有良好的层次可扩展性和操作灵活性。Mixing structure plays an important role in OSD multi-layered display. Based on the layering architecture and the data structure of OSD, this paper presents an improved mono-mixer, which adopts a pixel adaptive arbiter. The arbiter can alternate OSD channel in real-time depending on the layer priority. The proposed mixing architecture can display multi OSD layers simultaneously, thus implementing advanced man-machine interface, such as menu, mouse and so on. Experimental result on FPGA platform shows that the hardware cost can be reduced by 33% than multi-mixer structure. Moreover, the mixing structure is easily extensible and flexible in operation.

关 键 词：在屏显示 分层显示 混合器 人机对话 

分 类 号：TN911.73[电子电信—通信与信息系统]