JPH05216406A - Navigation device with automatic by-path display function - Google Patents

Abstract

PURPOSE:To display by-paths without ON-OFF operation when they are necessary by displaying a desired stored part distinctively from other parts when it is judged that the vehicle is in a traffic jam state. CONSTITUTION:A ROM 4 which is connected to an arithmetic processor 3 is equipped with a modification data area 40 and stores by-path data 42 as desired road information together with road data 41. The by-path data 42 are stored distinctively from other road data 41 with border data 45. Then the arithmetic processor 3 once judging that the vehicle is in the traffic jam state, controls a display device 7 to display by-paths. Namely, once the traffic jam state is judged, the by-paths are displayed by adding 'X' on a straight line. In this case, all by-paths in the corresponding block are displayed together with 'X', and data for the 'X' display are stored in the modification data area 40 of the ROM 4 and added to the road data and when the vehicle have passed the by-path, the by-path display ends.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation device for a vehicle, and more particularly to a navigation device having a function of automatically displaying a loophole.

[0002]

2. Description of the Related Art In recent years, vehicle navigation devices have been put into practical use, and various proposals have been made for displaying various information other than road information as information displayed on a display device. It is known that the information on the escape route is read from a CD-ROM or other software in addition to the ordinary road and is displayed for convenience during the congestion of the vehicle.

[0003]

However, since the conventional ones keep displaying the escape route or turn on / off the escape route display by a switch operation, the displayed map becomes difficult to see or the on / off operation is troublesome. There were some drawbacks. SUMMARY OF THE INVENTION It is an object of the present invention to solve these drawbacks and provide a navigation device in which an escape route is displayed only when an on / off operation is unnecessary and necessary.

[0004]

In order to achieve the above object, the navigation device of the present invention provides means for outputting information about the moving speed and moving direction of the vehicle and the current position, and map information including road information. Means for storing and storing information regarding a desired portion of the road information separately from other portions, and displaying the position of the vehicle by the outputting means and the map information stored in the storing means Means, a means for judging whether or not the own vehicle is in a traffic jam state based on the output of the outputting means, and a storage means for judging that the own vehicle is in a traffic jam state by the judging means. Means for controlling the display means so as to display the desired portion stored in the means for distinguishing from the other portions.

[0005]

The information about the moving speed and moving direction of the vehicle and the current position is output from the output means. Map information including road information and information about a desired portion of the road information are stored in a unit that stores the information separately from other portions,
The position of the vehicle from the output means and the map information stored in the storage means are both displayed on the display means. On the other hand, based on the result of the output means, it is judged by the means for judging whether or not the own vehicle is in the traffic jam condition, and when it is judged that the own vehicle is in the traffic jam condition, the control means The desired portion stored in the storing means is displayed separately from other portions.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, a sensor 1 is a sensor that detects the speed and traveling direction of a vehicle, and is configured to input this detection information via an interface 2 to an arithmetic processing unit 3 mainly composed of a microcomputer. . The arithmetic processing unit 3 is configured to estimate the vehicle position based on the information from the sensor 1 by a predetermined navigation algorithm. Alternatively, the sensor 1 may directly detect the information on the vehicle position and send the information to the arithmetic processing device 3. In this case, of course, the arithmetic processing unit 3 does not estimate the position.

A ROM 4 and a RAM 5 are connected to the arithmetic processing unit 3, and the ROM 4 stores map information. The RAM 5 temporarily stores the vehicle position data and the vehicle speed data. The ROM 4 has a modified data area 40, and as shown in FIG. 2, stores road data 41 and clear road data 42 which is desired road information. The exit road data 42 is stored separately from other road data by the boundary data 45.

The arithmetic processing unit 3 is configured to display a map of the own vehicle position and its vicinity on the display unit 7 via the interface 6 based on the own vehicle position based on the information from the sensor 1 and the map information from the ROM 4. ing. Further, the arithmetic processing unit 3 is configured to execute various controls according to commands from the operating unit 8. The operation device 8 is provided with a loophole display button for selecting a loophole display.

The arithmetic processing unit 3 further has a function of judging whether or not the vehicle is currently in a traffic jam. This judgment is basically performed based on the vehicle speed information from the sensor 1. In one example of this determination, a predetermined speed (for example, 10
When the speed is less than or equal to km, the timer is activated, and when the speed does not exceed the speed for a predetermined time, it is determined that the traffic is congested. In another example, the vehicle speed within a predetermined time is integrated with respect to time to obtain a travel distance, and when the travel distance within this time is less than or equal to a predetermined value, it is determined that a traffic jam condition exists. Further, it is possible to repeat the latter judgment at a predetermined time interval and judge whether or not the vehicle is in a traffic jam state depending on how many times the moving distance becomes equal to or less than the predetermined amount. In this case, it is possible to make a highly accurate determination, such as eliminating the risk of erroneously determining that the vehicle is not in a traffic jam condition when the vehicle temporarily accelerates and the amount of movement increases.

The arithmetic processing unit 3 is so constructed as to control the display unit 7 to display the escape route when it judges that the own vehicle is in a traffic jam. FIG. 3 shows an example of an escape route display. When (A) is a normal display state and it is determined that the traffic is in a traffic jam state, the escape route 70 is displayed with a cross on the straight line as shown in (B). It is like this. At this time, all exits in the block are displayed with a cross. The data for displaying this cross is stored in the modified data area 40 of the ROM 4,
This data is added to the road data.
When the vehicle passes through the loophole, the loophole display is configured to end.

It should be noted that, when the host vehicle is on a loophole, the road is not displayed as a loophole. Further, the escape route display is configured to be compulsorily executed by the operation of the operation device 8 described above.

The operation will be described with reference to FIG. When the navigation system is activated (step 10), map data is displayed (step 11). The arithmetic processing unit 3 determines whether or not the vehicle is running (step 12), and if it is not running, confirms that the system power supply is on (step 1).
3) If not on, the process ends. If it is on, the process returns to step 11. If the host vehicle is traveling, the arithmetic processing unit 3 determines whether or not the vehicle is currently in a traffic jam state (step 14). If it is not in a traffic jam state, the process returns to step 13. In the case of a traffic jam, the bypass is displayed separately from other roads (step 15). Then, it is judged whether or not the vehicle is traveling on the loophole (step 16), and if the vehicle is traveling, the routine returns to step 15 to continue the loophole display. If you are not driving through the loophole, turn off the loophole display (step 1
7) Then, it is determined whether or not there is a route display request from the operating device 8 (step 18). When there is a request, the process returns to step 15, and when there is no request, the process returns to step 13.

According to the configuration described above, the escape route is displayed only when the traffic is in a traffic jam state, and the escape route is not displayed in the normal state. Therefore, the display is very easy to see. In addition, there is an advantage that no special operation is required for displaying, and when necessary, the operation device 8 can be operated to display the escape route at any time.

[0014]

As described above, the navigation device of the present invention stores the map information including the road information, the means for outputting the information about the moving speed and the moving direction of the vehicle and the current position, and the road information. Means for storing information relating to a desired portion of the information separately from other portions, means for displaying both the position of the vehicle by the outputting means and the map information stored in the storing means, and the output Means for determining whether or not the own vehicle is in a congestion state based on the output of the means, and when the determination means determines that the own vehicle is in the congestion state, it is stored in the storing means. Since it is provided with a means for controlling the display means so as to display the desired portion separately from the other portions, when it is determined that the traffic is congested, the portion of the desired road information such as a loophole is changed to another portion. Distinguish from parts There is an effect that it is possible to automatically display Te.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a structure of a ROM 4 in one embodiment of the present invention.

FIG. 3 is an explanatory diagram showing an operation of one embodiment of the present invention.

FIG. 4 is a flowchart showing the operation of the embodiment of the present invention.

[Explanation of symbols]

1: sensor, 2: interface, 3: arithmetic processing unit, 4: ROM, 5: RAM, 6: interface,
7: display device, 8: operating device, 40: modified data area,
41: road data, 42: loophole data, 45: boundary data, 70: loophole.

Claims (2)

[Claims] 1. A means for outputting information about a moving speed, a moving direction and a current position of a vehicle, map information including road information stored, and information about a desired portion of the road information for other portions. And a means for displaying both the position of the own vehicle by the outputting means and the map information stored in the storing means, and a state in which the own vehicle is in a traffic jam state based on the output from the outputting means. A means for determining whether the vehicle is in the middle, and when the determination means determines that the vehicle is in a traffic jam, the desired portion stored in the storing means is displayed separately from other portions. And a means for controlling the display means so that the navigation device has an automatic escape route display function. 2. The navigation device having a loophole automatic display function according to claim 1, wherein the control means adds modification information to information about a desired portion and displays the information.