Data processing: vehicles – navigation – and relative location – Navigation – Employing position determining equipment
Reexamination Certificate
2000-11-22
2001-10-30
Camby, Richard M. (Department: 3661)
Data processing: vehicles, navigation, and relative location
Navigation
Employing position determining equipment
C701S212000, C701S213000
Reexamination Certificate
active
06311126
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a moving body map information display system for accurately displaying map information extracted from a recording medium.
2. Background Art
A conventional map information display apparatus for displaying the extracted map information of a desired region in a navigation device is disclosed in JP-A No. H7-83684. In this type of apparatus, difficulties arise when an operator controlling the map information display apparatus wants to extract map information having a size larger than the memory capacity of the apparatus. In this case, some of the information from the map of the regions selected by the operator may be deleted in order to operate within the apparatus' memory capacity. Alternatively, a map on a reduced scale is extracted so that the overall size of the map information selected is within the memory capacity of the apparatus. Once the information has been reduced to a manageable size, the map information can then be written into the memory.
However, these approaches require that some of the information relating to the region that has been set by an operator is deleted. This reduction in information through the deletion of the size, extent, or contents of the map selected often obliges a traveler to change the route or transit point. Ultimately, a traveler may then be obliged to change the schedule or the route of travel desired by vehicle or motorbike. Furthermore, when more detailed map information of a portion on the selected region is required, a user is obliged to select and utilize a map on a reduced scale in order to reduce the size of the map information. In either case, the detailed map information of these partial regions cannot be extracted and utilized advantageously and the use of maps through these methods can be troublesome.
SUMMARY OF THE INVENTION
The present invention overcomes the shortcomings associated with the related art and achieves other advantages not realized by the prior art.
An object of the present invention to provide a moving body map information display system that extracts and displays desired map information correctly and easily without changing the route or transit point that has been set by the operator.
These and other objects are accomplished by a moving body map information display system comprising means for generating a set of route point coordinate information for indicating points on a transition route and a scheduled route of a moving body; means for generating and extracting a plurality of limited region map information, said limited region map information based on said route point coordinate information that is stored in a memory medium and includes a plurality of road information to thereby generate the limited region map information; means for storing said limited region map information; and means for displaying said stored limited region map information, wherein said means for generating said limited region map information further includes means for generating a moving body route based on said route point coordinate information and said road information, means for setting a map scale, wherein scale magnitudes of a plurality of strip-like regions of map information located along said moving body route varies along said moving body route, and means for extracting said strip-like regions based on said scale magnitudes.
According to the characteristics of an embodiment of the present invention, since the scale magnitude of the strip-like region map information changes along the moving body route and then the strip-like region map information is extracted, the required map information is extracted correctly and easily without the necessity of changing the transition point and the route that have been set by an operator. Accordingly, the necessary map information is displayed while still maintaining an operator's desired display.
Further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.
REFERENCES:
patent: 5961571 (1999-10-01), Gorr et al.
patent: 6115669 (2000-09-01), Watanabe et al.
patent: 6154152 (2000-11-01), Ito et al.
patent: 6159516 (2001-01-01), Watanabe et al.
patent: 66877 (1982-12-01), None
patent: 7-83684 (1995-03-01), None
Katayama Mutsumi
Morita Hiroyuki
Camby Richard M.
Honda Giken Kogyo Kabushiki Kaisha
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