嵌入式系统消息序列化的地图显示方法  

Map display method based on sequenced messages in embedded system

作　　者：李光茂[1] 岳春生[1] 王万请[1] 

机构地区：[1]信息工程大学,郑州450002

出　　处：《测绘科学》2012年第1期198-200,197,共4页Science of Surveying and Mapping

摘　　要：在硬件资源有限的嵌入式平台上实现地图快速显示是个技术难题。针对连续地图操作时地图显示延迟的问题,本文研究了多任务模型下的消息驱动机制,运用将一个显示任务分解为一系列子任务的思想,提出了一种消息序列化的地图显示方法。实验结果表明,该方法能有效提高连续地图操作情况下的地图显示速度。Recently,fast map display on embedded platforms with limited hardware resources has become an academic conundrum.This paper aimed at coping with the display delay of successive map display operating.Firstly,the message-drive in multitask model was studied,and then a map display method was proposed,which divided one map display task into a sequence of child-tasks.Experimental results showed that this method could efficiently speed up map display in the case of successive operating.

关 键 词：消息序列化 事件模型 多任务 消息驱动 地图显示 

分 类 号：P208[天文地球—地图制图学与地理信息工程] TP311[天文地球—测绘科学与技术]