JPH11351902A - Navigation system for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a vehicular navigation system to set a destination from the time required by narrowing down objective destinations, based on set required time, and setting the destination to which route guidance is to be given by selecting the destination from among the narrowed-down objective destinations. SOLUTION: A controller 9 finds the present location of its own vehicle from the signals obtained from a GPS receiver 1, a gyro 2, and a vehicle speed sensor 3 and makes a display device 10 display a map by reading map data from a map data reader 4. When a destination is set, the controller 9 gives the route guidance to the destination by making the display device 10 display the route guidance. Upon discriminating that destination setting operation is made from the signals obtained from a control switch section 6 and a remote control sensor 8, the controller 9 sets the destination by retrieving addresses, facility names, etc. When a specific facility name is selected, the controller 9 makes the display device 10 display a facility name retrieving picture and, when 'narrowing down based on the required time' is selected in the retrieving picture, sets the destination by narrowing down destinations, based on the required time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle navigation system for providing route guidance to a set destination.

[0002]

2. Description of the Related Art Conventionally, in a vehicular navigation apparatus, a destination is set from an address, a facility name, a telephone number, and the like, and an optimum route is set for the set destination.
It has a function to provide route guidance.

[0003]

In each of the above-mentioned destination settings, a destination is set by designating a point or an area. Also, when setting destinations by narrowing down from the same type such as facility names, the target destinations are displayed in an index in ascending order of distance from the current location,
The destination is set by the selection.

[0004] However, some users may want to set a destination based on the time required to reach the destination, such as "enter a restaurant after about T hours" or "pass the coast after about U hours". An object of the present invention is to provide a vehicular navigation device capable of setting a destination from a required time as described above.

[0005]

In order to achieve the above object, according to the first aspect of the present invention, when a required time to a destination is set by an operation of an operator, the set required time is reduced to a predetermined time. Based on this, a target destination is narrowed down, and a destination for performing route guidance is set by an operator's selection from the narrowed down destinations.

Therefore, when performing route guidance, the destination can be set based on the time required for the destination. According to the second aspect of the present invention, when it is detected that traffic congestion or traffic regulation has occurred on the way to the set destination, narrowing down by the required time is performed again to set a new destination. It is characterized by doing so.

Therefore, it takes time to enter a traffic jam,
Even in a situation where a detour must be made due to traffic regulation, more appropriate route guidance can be provided by setting a new destination. Note that the reference numerals in parentheses described above indicate the correspondence with specific means described in the embodiment described later.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a first embodiment of the present invention. FIG. 1 shows the overall configuration of a vehicle navigation device. The vehicle navigation device is a GPS
Receiver 1, gyro 2, vehicle speed sensor 3, map data reading device 4, external information input / output device 5, operation switch unit 6, remote control 7, remote control sensor 8, control device 9, display device 1
0 and the like.

[0009] The GPS receiver 1 receives a radio wave from an artificial satellite and outputs a signal indicating the current location of the vehicle. The gyro 2 outputs a signal according to the traveling direction of the vehicle, and the vehicle speed sensor 3 outputs a signal according to the vehicle speed. The map data reading device 4 constitutes a map data reading means for reading map data from a map data storage medium such as a CDROM or a DVD for storing map data. The map data is read from the storage medium and output to the control device 9. Note that the map data stored in the map data storage medium includes various information necessary for setting a destination described later.

The external information input / output device 5 is connected to an external device (for example, V
This is a device that receives information provided from an ICS system or the like and transmits the information to the outside. Operation switch section 6
Is operated by a user (operator), and outputs various operation signals necessary for navigation according to the operation. The touch panel allows input operations on the screen of the display device 10, and the display device 10 It is composed of a key operation unit provided around the screen. The remote controller 7 transmits an operation signal according to a user operation,
The remote control sensor 8 receives an operation signal from the remote control 7.

The control device 9 includes computer means such as a microcomputer, and executes various arithmetic processes required for navigation based on signals from the above-described means. Specifically, the current position of the vehicle is obtained based on the signal from the GPS receiver 1 and the signals from the gyro 2 and the vehicle speed sensor 3, and a map data read command is output to the map data reading device 4 to output the map data storage medium. The map data is read from the device and the map is displayed on the display device 10.
To be displayed. In addition, when the destination is set, the control device 9 causes the display device 10 to perform a display for performing route guidance to the destination, and performs route guidance.

The display device 10 is provided in the instrument panel of the vehicle, displays a road map including the current location of the vehicle, and performs the above-described route guidance display during route guidance. As the display device 10, a liquid crystal display device, C
An RT display device or the like can be used. Next, a destination route setting process for performing route guidance to a destination in the above configuration will be described. FIG. 2 shows a specific process of the destination route process performed by the control device 9, and FIG. 3 shows a display state of the display device 10 when the destination is set.

When the control device 9 determines from the signal from the operation switch section 6 or the remote control sensor 8 that the user has performed an operation for setting a destination, the control device 9 performs a destination route setting process shown in FIG. First, a process for setting a destination is performed (step 100). As a method of setting a destination, a destination can be set by searching from an address, a facility name, a telephone number, and the like, similarly to the conventional method.

Here, a facility name search is selected, and a specific facility name is selected among them (step 10).
1), a search screen for the selected facility name is displayed on the display device 10 (step 102). FIG. 2 shows a search screen when a restaurant is selected as a facility name. In the facility name search screen, "Narrowing down by required time" is displayed. When "Narrowing down by required time" is selected (step 103), narrowing down by required time is performed to select a destination. It is set (step 104).

More specifically, “Narrowing down by required time”
Is selected, a selection screen for “XX near the current location”, “XX for about 1 hour”, “XX for about 2 hours”, and “Detailed time setting” is displayed on the display device 10, "Around the current location xx", "It takes about an hour ○
When either “○” or “XX that can be reached in about two hours” is selected, a target facility is searched based on the required time.

Here, the required time to the target facility can be calculated using static time and dynamic time. The static time is data used for calculating the estimated arrival time, and is a time calculated using the vehicle speed of each of the general road / highway set by the user and the distance from the current location to the target facility. Also, the dynamic time refers to information obtained by the external information input / output device 5 from the infrastructure already provided such as VICS or other information sources (information called link travel time for VICS target roads). This is a time in which the time calculated by calculation and the degree of traffic congestion calculated statistically are stored and the information is used for calculation. When the static time and the dynamic time are used in combination, the dynamic time may be used for a road on which information is provided, such as a VICS target road, and the static time may be used for a road that does not.

Then, the results obtained by the above-described search are displayed as a list on the display device 10, and when any one of them is selected, the destination is set to the selected facility name. When “Detailed time setting” is selected,
The required time details setting screen is displayed on the display device 10. On the required time details setting screen, "Time required"
“Limited area” and “Facility details” are displayed. The "time required" is the time required to reach the target facility from the current location, and the "limited area" is limited to the direction intended by the user, such as the direction from the current location, rough place name, etc. The “facility details” are for narrowing down the names of target facilities and the like.

After setting these settings, when "start search" is selected, a search based on the detailed settings is performed, and a search screen is displayed on the display device 10. When any one of them is selected, the search screen is displayed. Set the destination for the selected facility name. If you do not search by facility name,
Alternatively, if the narrowing down by the required time is not selected even if the search by the facility name is selected, the destination is set by the same method as the conventional method (step 105).

When the destination is set, the optimum route from the current position (departure point) to the destination is set using, for example, the Dijkstra method (step 200). After this,
Route guidance to the destination is performed according to the set destination route. Further, in the present embodiment, when traffic congestion or traffic regulation (for example, closing
The destination can be changed by narrowing down again by the required time. FIG. 4 shows a process performed by the control device 9 in this case, and FIG. 5 shows a display state of the display device 10 accompanying the process.

When a signal indicating that traffic congestion or traffic regulation has occurred is output from the external information input / output 5, the control device 9 detects that traffic congestion or traffic regulation has occurred based on the signal, and FIG. First, it is determined whether or not a destination is set by narrowing down by a required time (step 301). The judgment is YE
When S is reached, a message indicating that traffic congestion or traffic regulation has occurred is displayed on the display device 10 (step 302). FIG. 5 shows a specific example of the message.

If it is determined that "Yes" indicating the change of destination during the message display is selected (step 303), the required time detailed setting screen is displayed on the display device 10 in the same manner as described above. When "search start" is selected after the setting, a search based on the detailed settings is performed, and a search screen is displayed on the display device 10. When any of them is selected, the destination is displayed in the selected facility name. Is changed (step 304). Here, when searching for a destination,
The search is performed based on the calculation of the required time considering traffic information, regulation information, and the like. And for the changed destination,
An optimal route from the current location to the destination is set (step 305). Thereafter, route guidance to the destination is performed according to the newly set destination route.

If the destination is not set by narrowing down by the required time, or if "No" is selected in the message display, the processing shown in FIG. 4 is performed without changing the destination. To end. Note that, in the above-described embodiment, an example in which narrowing down by the required time when the search for the facility name is selected has been described.
If the location is selected and set, narrowing down by the required time can be performed.

Therefore, according to the above-described embodiment, a destination, such as "entering a restaurant after about T hours" or "passing the shore after U hours", arrives at a certain facility after several hours. The destination can be set, and the destination can be set with a higher degree of freedom. In the above-described embodiment, the processing portion for selecting one of “XX that can be reached in about 1 hour” and “XX that can be reached in about 2 hours” and setting in the required time detailed setting screen in step 104 includes: The means for setting the required time to the destination by user operation is configured, and the processing part that narrows down to the target destination by setting the destination and sets the destination is based on the set required time A means for narrowing down a target destination and setting a destination for performing route guidance by selection by a user from the narrowed down destinations is configured.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a vehicular navigation device showing a first embodiment of the present invention.

FIG. 2 is a flowchart showing a destination route setting process of a control device 9 in FIG. 1;

FIG. 3 is a diagram showing a display state of the display device 10 when setting a destination route.

FIG. 4 is a flowchart showing a process at the time of congestion / regulation occurrence of the control device 9 in FIG. 1;

FIG. 5 is a display device 1 for performing processing when traffic congestion or regulation occurs.
It is a figure showing the display state of 0.

[Explanation of symbols]

4 ... Map data reading device, 5 ... External information input / output device, 6
... Operation switch unit, 7 remote control, 8 remote control sensor, 9 control device, 10 display device.

Claims (2)

[Claims] In a vehicular navigation apparatus for providing route guidance to a set destination, when a required time to the destination is set by an operation of an operator, an object is determined based on the set required time. A vehicle navigation device comprising means for narrowing down destinations to be set and setting a destination for performing the route guidance by selection by an operator from the narrowed down destinations. 2. A device for detecting a traffic jam or a traffic restriction along the route to the set destination and performing a narrowing down by the required time again to set a new destination. The vehicle navigation device according to claim 1, wherein