JPH01213516A - On-vehicle map displaying device - Google Patents

Abstract

PURPOSE:To display data required by a driver in an easily understandable state by inputting and displaying map information in the order of priority and measuring the displaying density of the information and, then, deciding whether or not the displaying density exceeds a fixed limit. CONSTITUTION:Data from a sensor 1 are sent to an arithmetic/control means 3 and the present position of a vehicle is first operated by a position arithmetic means 3-1. A displaying information selecting means 3-2 reads out a map of the circumference of the present position of the vehicle or the position instructed by the displaying priority inputting means 2-1 of an input means 2 from a map data storing area 4-1 and successively sends the data to a display control means 3-4 so as to display the map on a displaying means 5 at an enlarged scale. Since a displaying density measuring and decision means 3-3 measures the quantity of the information displayed by the means 5 by counting the number of segments and decides whether or not the displaying density is proper, the map being displayed on the means 5 can always be displayed at an appropriate data density. Moreover, required information can be displayed in the order of priority.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an on-vehicle map display device that displays the location of a vehicle, surrounding map information, and the like.

(Prior Art) FIG. 2 shows the configuration of a conventional in-vehicle map display device. In FIG. 2, ■ is a sensor, and information obtained by this sensor for determining the position of the vehicle is sent to the calculation/control means 3. 2 is an input means, and the driver uses this input means to perform initial settings, search for a map,
This is used to perform various operations such as setting the magnification rate. 4 is an auxiliary storage means having map data 4-1. Further, the arithmetic/control means 3 is composed of a one-position arithmetic means a-t, a display information selection means 3-2, and a display control means 3-3.

Next, the operation of the above conventional example will be explained. In FIG. 2, when the vehicle runs, the sensor 1 operates, and the data detected by the sensor 1 is sent to the calculation/control means 3. In the calculation/control means 3, the 1st position calculation means 3-1 operates first, and the 6th and 1st display information selection means 3-2 calculates the current position of the vehicle. A map around the current vehicle position or around the position specified by the input means 2 is stored as map data 4- in the auxiliary storage means 4.
Selecting data to be read from 1 and displayed on the display means 1
For example, when the specified magnification rate is large, even detailed data is selected, and when the specified magnification rate is small, only rough data is selected. The selected data is displayed on the display control means 3.
-3, and is displayed on the display means 5 at the magnification specified by the display control means 3-3.

In this way, even with conventional in-vehicle map display devices.

The driver can be informed by displaying map information.

(Problem to be Solved by the Invention) However, for example, map information for urban areas and suburban areas differs in the amount of information per unit area.

If both are selected and displayed based on the same criteria, there will be too much data on the displayed map in urban areas, making it difficult to search for the necessary data, which will confuse drivers. On the other hand, in suburban areas, the display becomes sparse and there are no landmarks, resulting in a map display that is difficult to understand.

Further, the map display is enlarged or reduced according to the specified enlargement ratio, but as described above, when the enlargement ratio is small, the displayed contents are reduced.

However, because each driver uses different landmarks while driving, the most necessary information may be missed for some drivers.

In other words, the conventional in-vehicle map display device described above has a problem in that it is not possible to display map data with different data densities in a format that is easy for drivers to understand, and it is not possible to display necessary information to all drivers without losing necessary information. .

The present invention solves these conventional problems and aims to provide an in-vehicle map display device that can display necessary data in an easy-to-understand manner for all drivers.

(Means for Solving Problem 3111) In order to achieve the above object, the present invention requires the display of map information in an in-vehicle map display device that displays the position of the vehicle or surrounding map information on a display means. A display priority order input means that allows input in a given priority order, a display information selection means that selects map information in the input order, and a display information selection means that measures the density of display displayed on the display means and measures the display density to a certain limit. It is comprised of a display density measuring/determining means for determining whether the density exceeds the limit.

(Function) The present invention has the following effects due to the above configuration.

■ Display density is measured and determined by display density measurement/judgment means.
Because of this, the map information is not displayed in a density that exceeds a certain limit, and the amount of data is not too small, so it is easy to understand regardless of the map area, magnification, etc. Easy map display is possible.

■ Since display data is selected in advance by the driver in accordance with the priority order, the data most necessary for the driver is not lost, and it is also possible to handle cases where the data required by each driver is different.

(Example) FIG. 1 shows the configuration of an embodiment of the present invention.

In FIG. 1, 1 is a sensor.

Information for determining the position of the vehicle obtained by this sensor is sent to the calculation/control means 3. 2 is an input means;
A display priority order input means 2-1 is provided, and the driver uses this input means to perform various operations such as initial setting, map search, and setting of magnification. 4 is an auxiliary storage means having map data 4-1. Also, calculations and
The control main unit 3 includes a position calculation means 3-1, a display information selection means 3-2, a display density/measurement/judgment means 3-3, and a display control means 3-4.

Next, the operation of the above embodiment will be explained. In the embodiment described above, when the vehicle travels, the sensor 1 operates, and the data detected by the sensor 1 is sent to the calculation/control means 3. In the arithmetic/control means 3, the position arithmetic means 3-1 operates first, and the 0th order calculates the current position of the vehicle.
The display information selection means 3-2 uses map data 4 in the auxiliary storage means 4 to select a map around the current vehicle position calculated by the position calculation means 3-1 or around the position specified by the input means 2.
The zero display control means 3-4 reads out the zeros from 4-1 and sequentially sends them to the display control means 3-4, and displays them on the display means 5 at the designated enlargement ratio. At this time, if the driver uses the display priority order input means 2-1 to input the priority order of the necessary displays in advance, the display information selection means 3-2 displays the display according to the priority order. It selects information and sends out data according to its priority order. The display density measurement/judgment means 3-3 measures the amount of information displayed on the display means 5 by the display control means by counting the number of segments 6 and calculates the amount of information displayed per unit display image, i.e. When the display density reaches a certain value, it is determined that the display density is at its limit and a signal is sent to the display information selection means 3-2 to stop selecting information. The display information selection means 3-2 that receives the signal stops reading and selecting map information at that point.

In this way, according to the above embodiment, the display map can always display data at an appropriate density, and the most necessary information can be displayed because the data is displayed according to the priority order input by the driver. It can be displayed without dropping.

(Effects of the Invention) As is clear from the above embodiments, the present invention allows the display means to display data with an appropriate display density in an easy-to-understand manner, and to preferentially display the most necessary data that is different for each driver. In order to
It is never displayed.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an in-vehicle map display device according to an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional in-vehicle map display device. 1...Sensor, 2...Input means, 3-mountain calculation/
Control means, 4... Auxiliary storage means, 5... Display means. Patent applicant Matsushita Electric Industrial Co., Ltd. Figure 1, 1 Figure 2

Claims (1)

[Claims] In an in-vehicle map display device that displays the location of a vehicle or surrounding map information on a display means, there is provided a display priority order input means for inputting the display of map information in a necessary priority order, and a display priority order input means for inputting display of map information in the order of input. A display information selection means for selecting, and a display density measurement/judgment means for measuring the density of display displayed on the display means and determining whether the display density exceeds a certain limit are provided. An in-vehicle map display device that displays maps up to a certain density according to a priority order input by an input means.