JPH07249193A - Information display device for vehicle - Google Patents

Abstract

PURPOSE:To enable obviously and visibly recognizing vehicle information whose navigation is normally displayed on a screen by automatically changing-over the display scale of the screen into the prescribed special scale which is previously set so as to permit vehicle information to be easily and visibly recognized at the time of displaying vehicle information by means of superimposing it on the display screen for navigation. CONSTITUTION:An FM broadcasting receiver 9 receiving vehicle information by FM multiplex broadcasting from a broadcasting station, a radio wave beacon receiver 11 receiving vehicle information by a radio wave beacon transmitted from an equipment on a road with a beacon antenna 10 and an optical beacon receiver 14 receiving vehicle information by an opticalbeacon transmitted from the equipment on the road with a light receiver 12 and an amplifier 13 are provided. When change-over is executed from the navigation display screen to the vehicle information display screen in accordance with the operation command of vehicle information display under the control of a signal processor 4, a road map displayed on the screen is automatically changed-over into the previously set prescribe reduced scale.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is mounted on a vehicle and receives vehicle information such as traffic congestion on a road and parking status at a parking lot broadcast from a broadcasting station or on-road equipment, and displays the received information. The present invention relates to a vehicle information display device.

[0002]

2. Description of the Related Art Recently, there has been a vehicle navigation device that finds the position of a vehicle on a road map and displays the current position of the vehicle on the road map displayed on the screen. Has been developed in which the traffic information whose position is specified is received and the traffic jam location and the like is displayed as a symbol at a predetermined position on the road map on the navigation screen (see Japanese Patent Laid-Open No. 28397/1993). .

In such a device, conventionally, the received traffic information is displayed overlaid on the road map on the display screen for navigation without changing the scale of the road map.

[0004]

The problem to be solved is that if the received traffic information is displayed overlaid on the road map on the navigation display screen without changing the scale of the road map, the scale is reduced. If the rate is set to a large value, especially in urban areas with complicated roads, the display status of the screen will be mixed, making it difficult to visually recognize the traffic information displayed on the road map. That is. In addition, in order to make the traffic information displayed on the road map easy to see, the driver must search for an appropriate scale and perform an operation for changing it.

[0005]

The present invention is particularly suitable for displaying received vehicle information such as traffic congestion on a road or parking in a parking lot on a road map on a display screen for navigation. A means for automatically switching the scale of the road map displayed in Fig. 1 to a predetermined scale set in advance is provided so that the vehicle information displayed on the road map can be easily viewed.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a structural example of a vehicle information display device according to the present invention, which is integrally incorporated in a vehicle navigation device.

The vehicular navigation device itself is general, and includes a distance detector 1 for detecting the traveling distance of the vehicle, a direction detector 2 for detecting the traveling direction of the vehicle, a GPS receiver 3, and a distance detector. 1. Based on the traveling distance of the vehicle detected by 1 and the traveling direction of the vehicle detected by the direction detector 2, the current position on the XY coordinates of the vehicle is obtained by arithmetic processing, or the received signal of the GPS receiver 3 The current position on the XY coordinates of the vehicle is determined on the basis of the position information obtained from the signal processing device 4 including a microcomputer that controls the entire vehicle, and road map information based on digital map data is stored in advance. A map information storage medium 5, a storage medium reproducing device 6 for selectively reading out road map information of a required area from the storage medium 5, and the read road. A predetermined road map is displayed on the screen based on the map information, and a display device 7 for updating the current position of the vehicle on the road map displayed on the screen as the vehicle travels, and a signal processing device 4 An input command to the display device 7 to select and specify the map to be displayed, change the setting of the display scale factor, and set the starting point, destination, etc. of the vehicle on the displayed map. The operation device 8 is capable of performing various input operations such as selectively giving a display command.

With the above-described structure, the selectively read road map is displayed on the screen of the display device 7, and a signal is displayed as the vehicle travels from the starting point set on the map. In the processing device 4, the current position on the XY coordinates is updated in accordance with the preset display scale of the map, and the data of each obtained position is accumulated and held in the internal memory.

The current position on the road map is basically obtained by a predetermined calculation process while detecting the traveling distance of the vehicle and the traveling direction thereof. However, as the vehicle travels, a position error will occur. Since the values are accumulated, the current position is periodically corrected according to the position information obtained from the signal received by the GPS receiver 3.

Then, on both sides of the display device, for example, as shown in FIG. 2, a mark indicating the current position P of the vehicle and the traveling direction D of the vehicle at that position is displayed on the map displayed on the screen. The mark of the traveling locus RC from the starting point to the current position P is displayed as needed while being updated and displayed in accordance with the state.

According to the present invention, in such a case, the F for receiving the vehicle information by the FM multiplex broadcasting from the broadcasting station.
M broadcast receiver 9, radio wave beacon receiver 11 for receiving vehicle information by a radio wave beacon transmitted from roadside equipment via beacon antenna 10, and light receiver for vehicle information by an optical beacon transmitted from roadside equipment 12 and an optical beacon receiver 14 for receiving via the amplifier 13, the control and processing functions of the signal processing device 4 are enlarged, and the received vehicle information is displayed on the navigation screen in an overlapping manner. I am able to do that.

The vehicle information includes traffic information such as road traffic conditions and construction regulations, parking information such as parking conditions in a parking lot, and the type, content, and position data of the information. There is.

For example, when an input instruction for displaying traffic information is given from the operation device 8 (including a touch switch provided on the screen), the signal processing device 4 causes the signal processing device 4 to receive traffic information and radio waves received by the FM broadcast receiver 9. The traffic information received by the beacon receiver 11 or the traffic information received by the optical beacon receiver 14 is temporarily stored in the internal memory and then displayed on the screen of the display device 7 from the data of the position of each received traffic information. The position on the road map is determined, the type of each traffic information is determined, and each symbol corresponding to the type of traffic information is displayed at each position on the map.

At this time, for example, when a traffic information display command is given, the signal processing device 4, as shown in FIG. 3, at each predetermined position on the map where the current position P of the vehicle is displayed, symbols of each traffic information received respectively _{a 1, a 2, a 3} , B 1, B 2, and displays the C. Symbol A indicates a traffic jam location, symbol B indicates a traffic regulation location, and C indicates a traffic closure location.

[0015] In the display state of the screen like, by an input operation of the operation device 8, for example, specifying the symbols A _1, the signal processing device 4, as shown in FIG. 4, the specified symbol A ₁ thereby raising the brightness or changing the color of the display, and the like to display the flag F at both ends of the symbol a _1, indicate that the symbols a ₁ is selected by changing the display form of the symbols a ₁ To do.

Then, in the lower right corner of the screen, the content of the traffic information corresponding to the symbol A ₁ is displayed, for example, "Accident traffic jam 2 km, transit time 10 minutes".

The contents of the traffic information corresponding to the selected symbol A ₁ may be output by voice.

Further, when a parking information display command is given from the operation device 8, the signal processing device 4 causes the predetermined position on the map where the current position P of the vehicle is displayed, as shown in FIG. , Symbols C ₁ , C ₂ , C ₃ of the parking information respectively received are displayed.

Then, by the input operation of the operating device 8,
For example, when the symbol C ₂ is designated, the signal processing device 4
As shown in FIG. 6, while displaying the mark M indicating that the symbol C ₂ is selected, the content of the parking information corresponding to the symbol C ₂ is displayed in the lower right corner of the screen.
For example, "Hibiya parking lot available 200 yen / 30 minutes"
Is displayed.

Hereinafter, a screen state in which vehicle information such as traffic information and parking information is displayed on the navigation display screen will be referred to as a vehicle information display screen.

In such a vehicle information display device,
Particularly, in the present invention, under the control of the signal processing device 4,
When switching from the navigation display screen to the vehicle information display screen in response to an operation command for vehicle information display, a means for automatically switching the road map displayed on the screen to a predetermined scale set in advance is provided. There is.

The predetermined scale set in advance is set to, for example, about 1 / 50,000, which has a relatively small scale, so that it is easy to visually recognize the vehicular information which is overlaid and displayed on the navigation display screen. To be done.

FIG. 7 shows a state in which the navigation display screen I displayed at a large scale of 1 / 50,000 or more is switched to the vehicle information display screen II.

If the vehicle information does not exist within a certain area around the own vehicle when an operation command for displaying the vehicle information is given, no screen is displayed under the control of the signal processing device 4. Is not switched, and a message to that effect is displayed on the screen.

FIG. 8 shows a flow of processing in the signal processing device 4 at this time.

Further, in the present invention, at the time of switching from the navigation display screen to the vehicle information display screen, when the scale of the road map on the navigation display screen at that time is different from the scale for displaying the vehicle information, the user is cautioned. Under the control of the signal processing device 4, a means for outputting a message indicating that the scale of the screen is changed is provided.

In FIG. 9, the navigation display screen I displayed at a large scale ratio of 1 / 50,000 or more is displayed on the screen after a message M indicating that the scale is enlarged is displayed. The state at the time of switching to the information display screen II is shown.

When switching to the vehicle information display screen,
A message indicating that the scale is enlarged and displayed may be output by voice.

FIG. 10 shows a flow of processing in the signal processing device 4 at this time.

Under the control of the signal processing device 4, the road map displayed on the screen when the vehicle information display screen is switched to the navigation display screen in response to an operation command for returning to the original navigation display. The means for returning the scale to the original input scale is adopted.

[0031]

As described above, in the vehicle information display device according to the present invention, in particular, when displaying the received vehicle information such as the traffic jam condition of the road and the parking condition of the parking lot on the display screen for navigation, , The display scale of the screen is automatically set to a predetermined scale that makes it easy to visually recognize the vehicle information that is confusingly displayed in the navigation information, regardless of the display scale of the navigation screen up to that point. Since it is designed to be switched automatically, it is not necessary for the driver to search for an appropriate scale for himself and do any operation to change it, and it is always possible to clearly and clearly see the vehicle information displayed on the navigation screen. It has the advantage that it can.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration example of a vehicle information display device according to the present invention.

FIG. 2 is a diagram showing an example of a display screen of a vehicle navigation.

FIG. 3 is a diagram showing an example of a state in which symbols of received traffic information are collectively displayed on a map displayed on a screen.

FIG. 4 is a diagram showing an example of a display state of details of traffic information according to a selected symbol.

FIG. 5 is a diagram showing an example of a state in which the received parking information symbols are collectively displayed on the map displayed on the screen.

FIG. 6 is a diagram showing an example of a display state of details of parking information according to a selected symbol.

FIG. 7 is a diagram showing how the navigation display screen is switched to the vehicle information display screen.

FIG. 8 is a diagram showing a flow of processing when the navigation display screen is switched to the vehicle information display screen.

FIG. 9 is a diagram showing a state where the navigation display screen is switched to the vehicle information display screen after a message to the effect that the reduced scale is displayed is displayed on the screen.

[FIG. 10] After the message that the navigation display screen is displayed at an enlarged scale is displayed on the screen,
It is a figure which shows the flow of a process when switching to a vehicle information display screen.

[Explanation of symbols]

 1 Distance Detector 2 Direction Detector 3 GPS Receiver 4 Signal Processing Device 5 Map Information Storage Medium 6 Storage Medium Playback Device 7 Display Device 8 Operating Device 9 FM Broadcast Receiver 10 Beacon Antenna 11 Radio Beacon Receiver 12 Light Receiver 13 Amplifier 14 Optical beacon receiver I Navigation display screen II Vehicle information display screen

Claims (2)

[Claims] 1. A navigation display means for obtaining the position of a vehicle on a road map and displaying the current position of the vehicle on the road map displayed on a screen, and vehicle information broadcast from a broadcasting station or on-road equipment. A vehicle information display means for receiving and displaying the received vehicle information as a symbol at a specific position corresponding to the vehicle information on the road map on the navigation display screen, the navigation display screen and the vehicle information display Means for selectively switching the screen according to the operation command, and means for automatically switching the scale of the road map displayed on the screen to a predetermined preset scale when switching to the vehicle information display screen. A vehicle information display device adapted to be used. 2. When switching from the navigation display screen to the vehicle information display screen, if the scale of the road map on the navigation display screen at that time is different from the vehicle information display scale, a message indicating that the scale is changed is output. The vehicle information display device according to the above-mentioned item 1.