摘要
Map data display is the basic information representation mode under embedded real-time navigation. After a navigation display data set （NDIS_SET） with several dimensions and corresponding mathematical description formula are designed, a series of rules and algorithms are advanced to optimize embedded navigation data and promote data index and input efficiency. A new parallel display algorithm with navigation data named N PDIS is then presented to adapt to limited embedded resources of computation and memory after a normal navigation data display algorithm named NDIS and related problems are analyzed, N_PDIS can synchronously create two preparative bitmapa by two parallel threads and switch one of them to screen automatically. Compared with NDIS, the results show that N_PDIS is more effective in improving display efficiency.
地图数据显示是在嵌入的即时航行下面的基本信息表示模式。在有几种尺寸和相应数学描述公式的航行显示器数据集(NDIS_SET ) 被设计以后，一系列规则和算法被推进优化嵌入的航行数据并且支持数据索引和输入效率。在一个正常航行数据显示算法说出 NDIS，相关问题被分析以后，有数据说出 N_PDIS 的航行的一个新平行显示器算法然后被介绍适应计算和存储器的有限嵌入的资源。N_PDIS 能同时地由二个平行线程创造二张准备位图并且交换他们之一自动地屏蔽。与 NDIS 相比，结果证明 N_PDIS 在改进显示效率是更有效的。
