Congestion information display device
A technology of congestion information and display devices, which can be used in instruments, traffic control systems, road network navigators, etc., and can solve problems such as driver confusion
Inactive Publication Date: 2011-05-25
DENSO CORP
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[0006] In addition, according to the degree of congestion, these congestion information are displayed in different display forms (such as display colors), that is, in general, for example, the congestion information indicating "congestion" with a relatively large degree of congestion is displayed in red, and the congestion information is displayed in red. The congestion information of "congested" indicating a moderate degree of congestion is displayed in orange, and the congestion information of "unimpeded" indicating a small degree of congestion is displayed in yellow. However, if the respective lengths of the congestion information received from the center device are short, the In the case of mixed display of multiple congestion information with different forms in a short road length, there will be a problem of causing confusion to the driver on the contrary
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[0026] Hereinafter, an embodiment in which the present invention is applied to a car navigation device will be described with reference to the drawings. figure 1 It represents the structure of the car navigation device through the combination of functional blocks, figure 2 The structure of the central device is represented by a combination of function blocks.
[0027] An on-vehicle navigation device 1 (called a congestion information display device in the present invention) mounted on a vehicle and a center device 2 installed in a traffic information center are configured to be able to communicate via a mobile communication network. The in-vehicle navigation device 1 and the center device 2 have an N (unspecified number) to 1 relationship, and the center device 2 is configured to be able to communicate with an unspecified number of in-vehicle navigation devices 1 via a mobile communication network.
[0028] The car navigation device 1 is configured to include: a control uni...
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The invention provides a display device of jamming information, when a relation between the jamming information received from a center device (2) and the road connecting line for overlapping the jamming information satisfies a scheduled condition (e.g. not corresponding with a crossed point connected with a main road of a common road), then a vehicle navigation device (1) prolongs the terminal side of the jamming information and display. Also it is unable to force a driver with such load that the driver considers a difference interval from the terminal of the jamming information to a special crossed point. In addition, a jamming information is displayed through a road in certain length, thereby not mixed displaying a plurality of information with different forms on a short road length, and properly and significatively displaying the jamming information received from the center device (2).
Description
technical field [0001] The present invention relates to a congestion information display device configured to superimpose and display congestion information (congestion line) of a predetermined length indicating the degree of congestion received from a center device on a road link in road map data. Background technique [0002] Conventionally, there has been provided a car navigation device that receives congestion information (congestion lines) of a predetermined length indicating the degree of congestion from a center device, and superimposes the received congestion information on road links in road map data and A car navigation device that performs display (for example, refer to Patent Documents 1 and 2). [0003] Patent Document 1: Japanese Patent Application Laid-Open No. 7-239997 [0004] Patent Document 2: Japanese Patent Laid-Open No. 2001-194170 [0005] However, generally speaking, the driver judges whether there is congestion on the basis of reaching a specific ...
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IPC IPC(8): G08G1/0969G01C21/26
Inventor 辻宪志
Owner DENSO CORP