发明名称 Method of displaying maps for a car navigation unit
摘要 The invention provides a method of displaying maps for a vehicle navigation unit that displays a wide area map and an expanded map simultaneously on the display screen, and scrolls the detailed map on a cursor screen synchronously with a cursor movement on the wide area map, thereby facilitating the driver's comprehension of the vehicle's position on the map. The method to achieve the foregoing object comprises: dividing a display screen into a main screen and a cursor screen; when the two-screen map display is requested, displaying a wide area map on the main screen and at the same time displaying on the main screen a cursor indicating a specific area on the wide area map; displaying a detailed map on the cursor screen of an area indicated by the cursor; moving the cursor on the wide area map on the main screen in accordance with the travel of the vehicle, and scrolling the detailed map on the cursor screen in accordance with the movement of the cursor; and, when the cursor reaches a specific position on the main screen, displaying a wide area map adjoining the foregoing wide area map on the main screen and displaying the cursor at a setting position on the main screen.
申请公布号 US6121900(A) 申请公布日期 2000.09.19
申请号 US19980132007 申请日期 1998.08.10
申请人 ALPINE ELECTRONICS, INC. 发明人 TAKISHITA, HIDEYUKI
分类号 G09B29/00;G01C21/00;G01C21/36;G08G1/0969;G09B29/10;(IPC1-7):G08G1/123 主分类号 G09B29/00
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