Research on Map Displayment Based on Kiwi Data Format

Based on the analysis of the store methods of Kiwi format's map display data, the dynamic organization methods of these data in the navigation software memory are studied. This paper improves the two-level buffer method of map display and a dual buffer pond strategy of the map display, in which data buffer pool and map bitmap buffer pool are used to manage data pre-load and map pre-draw in the process of drawing map. The results demonstrate the dynamic organization methods and the dual buffer pool map display strategy can improve the speed of map display.