公开(公告)号：US5532717A

公开(公告)日：1996-07-02

申请号：US246901

申请日：1994-05-19

申请人： Gregory B. Jones ,  Joseph B. Lopes ,  Gerald R. Martel

发明人： Gregory B. Jones ,  Joseph B. Lopes ,  Gerald R. Martel

IPC分类号： G09G1/16 ,  G09G5/00

CPC分类号： G09G1/162

摘要： The method of the present invention minimizes the time required to display portion of a time sampled data file. A plurality of compressed data files are generated based on the time sampled data file. Each of the compressed data files is defined by a corresponding unique compression ratio such that each compressed data file contains fewer data points than the original time sampled data file. Each compressed data file characterizes the original time sampled data file. The compressed data files are stored in a data storage device for subsequent retrieval. A resolution factor is defined for each of the compressed data files. One of the compressed data files is then selected based on the resolution factor and the portion of the time sampled data file requested for display. The selected compressed data file is transferred from the data storage device to the display device.

摘要翻译： 本发明的方法使得显示时间采样数据文件的一部分所需的时间最小化。 基于时间采样数据文件生成多个压缩数据文件。 每个压缩数据文件由对应的唯一压缩比定义，使得每个压缩数据文件包含比原始时间采样数据文件少的数据点。 每个压缩数据文件表征原始时间采样数据文件。 压缩数据文件被存储在数据存储装置中以便随后检索。 为每个压缩数据文件定义分辨率因子。 然后基于分辨率因子和请求显示的时间采样数据文件的部分来选择一个压缩数据文件。 所选择的压缩数据文件从数据存储装置传送到显示装置。

公开(公告)号：US5646855A

公开(公告)日：1997-07-08

申请号：US504374

申请日：1995-07-19

申请人： Gregory B. Jones ,  Christopher Shaw ,  Stacy J. Hills

发明人： Gregory B. Jones ,  Christopher Shaw ,  Stacy J. Hills

IPC分类号： G05D1/02 ,  G05D1/00

CPC分类号： G05D1/0206

摘要： A method is provided for navigating a vehicle. Waypoint exclusion zones areefined as circles whose centers are known-position waypoints. The vehicle is steered along a path that is tangential to the "current" waypoint exclusion zone. This path that is maintained until a relative bearing between the vehicle and a center of the current waypoint exclusion zone is at least 90.degree. if the path is left of the center of the current waypoint exclusion zone, and at most -90.degree. if the path is right of the center of the current waypoint exclusion zone. When either of these conditions is met, the vehicle is located along the circle of the current waypoint exclusion zone. The vehicle is then advanced along the circle of the current waypoint exclusion zone until a heading of the vehicle matches a heading of a path that: is tangential to the "next" waypoint exclusion zone. When the heading of the vehicle matches the heading of the path that is tangential to the next waypoint exclusion zone, the next waypoint exclusion zone becomes the current waypoint exclusion zone for carrying out the steering, maintaining and advancing of the vehicle.

摘要翻译： 提供了一种用于导航车辆的方法。 航路点禁区被定义为其中心是已知位置航路点的圆。 沿着与“当前”航路点排阻区相切的路径转向车辆。 如果路径留在当前航路点禁区的中心，直到车辆与当前航路点禁区的中心之间的相对方位相对保持的路径至少为90°，如果路径为-90° 是当前航路点禁区的中心。 当满足这些条件中的任何一个时，车辆沿着当前航路点禁区的圆圈定位。 然后车辆沿着当前航路点禁区的圆前进，直到车辆的航向与与“下一个”航路点禁区为切向的路径的航向相匹配。 当车辆的航向匹配与下一个航路点排除区相切的路径的航向时，下一个航路点禁区将成为当前的航路点排除区，用于执行车辆的转向，保持和前进。