US 5,351,059 AGranted

Navigation system and method therefor

OwnerToshio Tsuyukiinventor

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Abstract

A navigation system and a method therefor arranged to be mainly adapted to a driver but the same is as well as adapted to a pedestrian as a portable type according to an embodiment in which devices such as a distance sensor and an azimuth sensor are not used. When information about the passage through which a moving object is moving at this very moment, such as a signal transmitted from a transmitter disposed in each passage, electric waves emitted from an orbit satellite, results of detections made by the distance sensor and the azimuth sensor or information supplied by a user, is supplied, an estimation of a result of a travel through the passage while performing no right or left turn, and an estimation of a result of a travel through a lane the way of which is particularly determined previously are respectively indicated as a travelling line. When a target is set, both the target and the travelling line are indicated on the screen of a display device. Simultaneously, the passage at which the target confronts and a passage which constitutes a proper and correct course from a main passage to the target are indicated. Data about the passage is retrieved by means of codes given such that a group code and a common code are given to each link.

Claims39

Dependent claims

A navigation system that displays a road on which an object is located, without displaying a route to a target comprising a main unit including a storage device, a central processing device, an input device and a display device, said main unit being mounted on the moving object and including:

road information receiving means for receiving information about a shape and a position of a road through which said moving object is moving from at least one of an external device positioned externally of said main unit and an auxiliary device provided for said main unit, said shape of said road being determined assuming that said moving object moves along said road without changing said road;
a target information indicating means for indicating information about the target for said moving object to reach on a screen of said display device;
travelling line generating means for generating a single travelling line representing only said shape of said road through which said moving object is moving on the basis of said information about the shape and the position of said road that said road information receiving means receives, said travelling line generating means changing said single travelling line when said road information receiving means receives information indicating that the moving object has changed roads;
and
a display processing means for displaying said generated single travelling line on the screen of said display device while indicating the positional relationship of said single travelling line with said information about said target, said display processing means displaying said single travelling line so that said single travelling line is highlighted with respect to other lines displayed on said screen, wherein said single travelling line displayed on said screen is changed when said moving object changes roads.

2 more elements

A navigation method of generating information about a moving state of a moving object and displaying said information on a display device, said navigation method displaying a road on which the moving object is located without displaying a route to a target and comprising the steps of:

setting information about the target for said moving object to reach;
obtaining information about a shape and a position of a road through which said moving object is moving, said shape of said road being determined assuming that said moving object moves along said road without changing said road;
generating a single travelling line representing only said shape of said road through which said moving object is moving on the basis of said information about the shape and the position of said road, said generated single travelling line changing when said information about the shape and the position of the road indicates that the moving object has changed roads;
and
displaying both of said information about said target and said single travelling line on a screen of said display device, wherein said single travelling line on said screen is changed whenever said moving object changes roads, said single travelling line being displayed so that said single travelling line is highlighted in a manner that is distinct from other line on said screen.

2 more elements

Dependencies are inferred from the claim text.