EP0346491A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A display unit of navigation system
Assignee: Aisin AW Co Ltd
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Filing: 1988-12-23
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Granted: —
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Expires: 2008-12-23
Abstract
Abstract A display unit of a navigation system in accordance with the present invention is equipped with route search means (13) for searching an optimum route on the basis of position data, node data (21), crossing data (19) and road data (23) and reduced scale setting means (15), sets a reduced scale of a display map in accordance with the distance between the present position and the destination and selectively displays a road to be displayed in accordance with the reduced scale on a display (31). This invention includes also a display (48) for displaying a crossing graphics consisting of a starting crossing, a neighbouring road network and landmarks and touch keys (35) such as a decision key for drawing a travelling direction on the displayed crossing graphics, a rotation support key for rotating the crossing graphics and displaying it, and the like. The invention is further equipped with a data processing control unit (46) for reading the position coordinates of a crossing landmark to be displayed from a map data (53), rotating and enlarging the position coordinates, converting them to the coordinates of a drawing area set.in the display means and sending an output signal so that the crossing landmark pattern is drawn in this converted coordinates.
Inventors
- 👤 Shuzo Moroto
- 👤 Shoji Yokoyama
- 👤 Mitsuhiro Nimura
- 👤 Akimasa Nanba
- 👤 Takashi Yamada
- 👤 Koji Sumiya
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 15:05
CPC Classifications
G; G01; G01C; G01C21/00; G01C21/26; G01C21/34; G01C21/36; G01C21/3667; G01C21/367; G01C21/3673; G01C21/3679; G01C21/3682
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
113 words
In a navigation apparatus for providing guidance along a course by setting the course from a designated point of departure and destination, a display system characterized by having course searching means for searching out an optimum course based on position information, node data comprising information relating to attributes of the position information, intersection data comprising information relating to intersections, and road data comprising information relating to roads, and scale ratio setting means for setting a scale ratio of a displayed map, wherein the scale ratio of said displayed map is set in conformity with distance between a present position and the destination, and roads are selectively displayed in conformity with the scale ratio.
Claim 2
Dependent Claim
113 words
In a navigation apparatus for providing guidance along a course by setting the course from a designated point of departure and destination, a display system characterized by having course searching means for searching out an optimum course based on position information, node data comprising information relating to attributes of the position information, intersection data comprising information relating to intersections, and road data comprising information relating to roads, and scale ratio setting means for setting a scale ratio of a displayed map, wherein the scale ratio of said displayed map is set in conformity with distance between a present position and the destination, and roads are selectively displayed in conformity with the scale ratio.
Claim 3
Dependent Claim
136 words
In a navigation apparatus for providing guidance along a course by setting the course from a designated point of departure and destination, a display system characterized by having course searching means for searching out an optimum course based on position information, node data comprising information relating to attributes of the position information, intersection data comprising information relating to intersections, and road data comprising information relating to roads, and scale ratio setting means for setting a scale ratio of a displayed map, wherein a searched course is displayed in a specific color and a travelled portion of the course is displayed it displayed in another color, the ecale ratio of said displayed map is set in conformity with distance between a present position and the destination, and roads are selectively displayed in conformity with the scale ratio.
Claim 4
Dependent Claim
136 words
In a navigation apparatus for providing guidance along a course by setting the course from a designated point of departure and destination, a display system characterized by having course searching means for searching out an optimum course based on position information, node data comprising information relating to attributes of the position information, intersection data comprising information relating to intersections, and road data comprising information relating to roads, and scale ratio setting means for setting a scale ratio of a displayed map, wherein a searched course is displayed in a specific color and a travelled portion of the course is displayed it displayed in another color, the ecale ratio of said displayed map is set in conformity with distance between a present position and the destination, and roads are selectively displayed in conformity with the scale ratio.
Claim 5
Dependent Claim
121 words
In a navigation apparatus for providing guidance along a course by setting the course from a designated point of departure and destination, a display system characterized by having course searching means for searching out an optimum course based on position information, node data comprising information relating to attributes of the position information, intersection data comprising information relating to intersections, and road data comprising information relating to roads, and scale ratio setting means for setting a scale ratio of a displayed map, wherein the scale ratio of said displayed map is set in conformity with distance between a present position and the destination, roads are selectively displayed in conformity with the scale ratio, and the scale ratio of the map is displayed.
Claim 6
Dependent Claim
121 words
In a navigation apparatus for providing guidance along a course by setting the course from a designated point of departure and destination, a display system characterized by having course searching means for searching out an optimum course based on position information, node data comprising information relating to attributes of the position information, intersection data comprising information relating to intersections, and road data comprising information relating to roads, and scale ratio setting means for setting a scale ratio of a displayed map, wherein the scale ratio of said displayed map is set in conformity with distance between a present position and the destination, roads are selectively displayed in conformity with the scale ratio, and the scale ratio of the map is displayed.
Claim 7
Dependent Claim
70 words
In a navigation apparatus for providing travel guidance to a destination in response to inputs of the destination and present position, a display system characterized in that an intersection diagram comprising a departure intersection, a peripheral road network and landmarks is displayed when the departure intersection is entered, direction of travel is displayed on the intersection map, and the intersection diagram is displayed upon being rotated by a rotation instruction.
Claim 8
Dependent Claim
70 words
In a navigation apparatus for providing travel guidance to a destination in response to inputs of the destination and present position, a display system characterized in that an intersection diagram comprising a departure intersection, a peripheral road network and landmarks is displayed when the departure intersection is entered, direction of travel is displayed on the intersection map, and the intersection diagram is displayed upon being rotated by a rotation instruction.
Claim 9
Dependent Claim
77 words
In a navigation apparatus for providing travel guidance to a destination in response to inputs of the destination and present position, a display system characterized in that an intersection diagram comprising a departure intersection, a peripheral road network and landmarks is displayed when the departure intersection is entered, direction of travel is displayed on the intersection map by operating a verification key, and the intersection diagram is displayed upon being rotated by operating a rotation instruction key.
Claim 10
Dependent Claim
77 words
In a navigation apparatus for providing travel guidance to a destination in response to inputs of the destination and present position, a display system characterized in that an intersection diagram comprising a departure intersection, a peripheral road network and landmarks is displayed when the departure intersection is entered, direction of travel is displayed on the intersection map by operating a verification key, and the intersection diagram is displayed upon being rotated by operating a rotation instruction key.
Claim 11
Dependent Claim
92 words
In a navigation apparatus for providing travel guidance to a destination in response to inputs of the destination and present position, a display system characterized in that an intersection diagram comprising a departure intersection, a peripheral road network and landmarks is displayed when the departure intersection is entered, direction of travel is displayed on the intersection map, and the intersection diagram is displayed upon being rotated, by selectively designating a road on the diagram map, in such a manner that said selected road is placed below the intersection, which is centrally located.
Claim 12
Dependent Claim
92 words
In a navigation apparatus for providing travel guidance to a destination in response to inputs of the destination and present position, a display system characterized in that an intersection diagram comprising a departure intersection, a peripheral road network and landmarks is displayed when the departure intersection is entered, direction of travel is displayed on the intersection map, and the intersection diagram is displayed upon being rotated, by selectively designating a road on the diagram map, in such a manner that said selected road is placed below the intersection, which is centrally located.
Claim 13
Dependent Claim
118 words
In a navigation apparatus for outputting guidance information in accordance with a preset course, a display system characterized by having display means for displaying an intersection diagram, in which direction of travel is pointed upward, and intersection landmark patterns, and map data stored as a relationship among roads, intersections and intersection landmarks, and-as coordinates, wherein positional coordinates of an intersection landmark to be displayed are read from said map data, said positional coordinates are rotated, enlarged and transformed into coordinates of a display area set on said display means, and said intersection landmark patterns are displayed on the transformed coordinates. The invention is further characterized in that the intersection diagram is displayed and prepared from the map data.
Claim 14
Dependent Claim
118 words
In a navigation apparatus for outputting guidance information in accordance with a preset course, a display system characterized by having display means for displaying an intersection diagram, in which direction of travel is pointed upward, and intersection landmark patterns, and map data stored as a relationship among roads, intersections and intersection landmarks, and-as coordinates, wherein positional coordinates of an intersection landmark to be displayed are read from said map data, said positional coordinates are rotated, enlarged and transformed into coordinates of a display area set on said display means, and said intersection landmark patterns are displayed on the transformed coordinates. The invention is further characterized in that the intersection diagram is displayed and prepared from the map data.
Claim 15
Dependent Claim
113 words
In a navigation apparatus for outputting guidance information in accordance with a preset course, a display system characterized by having display means for displaying an intersection diagram, in which direction of travel is pointed upward, and intersection landmark patterns, and map data stored as a relationship among roads, intersections and intersection landmarks, and as coordinates, wherein positional coordinates of an intersection landmark to be displayed are read from said map data, said positional coordinates are rotated, enlarged and transformed into coordinates of a display area set on said display means, and said intersection landmark patterns are displayed on the transformed coordinates, and said intersection diagram is displayed and prepared from the map data.
Claim 16
Dependent Claim
113 words
In a navigation apparatus for outputting guidance information in accordance with a preset course, a display system characterized by having display means for displaying an intersection diagram, in which direction of travel is pointed upward, and intersection landmark patterns, and map data stored as a relationship among roads, intersections and intersection landmarks, and as coordinates, wherein positional coordinates of an intersection landmark to be displayed are read from said map data, said positional coordinates are rotated, enlarged and transformed into coordinates of a display area set on said display means, and said intersection landmark patterns are displayed on the transformed coordinates, and said intersection diagram is displayed and prepared from the map data.
References Cited (Backward Citations)
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