公开(公告)号：US06218965B1

公开(公告)日：2001-04-17

申请号：US09126386

申请日：1998-07-30

申请人： Marlin L. Gendron ,  Perry B. Wischow ,  Michael E. Trenchard ,  Maura C. Lohrenz ,  Lancelot M. Riedlinger ,  J. Michelle Mehaffey

发明人： Marlin L. Gendron ,  Perry B. Wischow ,  Michael E. Trenchard ,  Maura C. Lohrenz ,  Lancelot M. Riedlinger ,  J. Michelle Mehaffey

IPC分类号： G06F16500

CPC分类号： G06T17/05

摘要： The moving map composer (MMC) is a device that allows a user to manipulate different sources of map data into a single map for presentation on a display. The MMC has an ability to extract a predetermined area of map coverage defined by sets of latitude and longitude points, or non-orthogonal areas of map coverage, the smallest of which is a segment. A bitmap is a representation of an available map coverage for a given area selected by a user having a “set”, or “1” bit to indicate a segment is present, and a “clear”, or “0” bit to indicate a segment is missing. The size of the bitmap is determined dynamically to assure a two-bit buffer zone of clear bits around a polygon's maximum extent. If the user selected polygon crosses one or more maps, the polygon is subdivided into several new polygons. Once the total map coverage desired has been defined, what available map sources are determined and the resulting subset is displayed, if the resulting coverage is acceptable, the user may transfer the data to the display.

摘要翻译： 移动地图构图器（MMC）是允许用户将不同的地图数据源操纵到单个地图中以在显示器上呈现的设备。 MMC具有提取由纬度和经度点集合定义的地图覆盖区域的预定区域的能力，或者地图覆盖区域的最小区域的非正交区域。 位图是由具有“set”或“1”位的用户选择的给定区域的可用地图覆盖的表示，以指示段存在，以及“清除”或“0”位以指示 段缺失。 动态地确定位图的大小，以确保围绕多边形最大范围的清除位的两位缓冲区。 如果用户选择的多边形与一个或多个地图交叉，则多边形被细分为几个新的多边形。 一旦定义了所需的总地图覆盖率，确定可用的地图源，并且显示所得到的子集，如果所得到的覆盖可接受，则用户可以将数据传送到显示器。