JP2816448B2 - Car navigation system - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an in-vehicle navigation device, and in particular, to facilitate input operation of a destination of a vehicle and display useful guidance information to the destination of the vehicle. The present invention relates to an in-vehicle navigation device.

2. Description of the Related Art Some vehicles, such as automobiles, are provided with an in-vehicle navigation device for guiding a traveling route from a departure place to a destination. When the navigation device sets a certain destination, for example, a map for the traveling path and the current position of the vehicle are displayed on the screen of the display means, and the direction to the destination and It displays guidance information such as distance and guides the vehicle to its destination.

Such a navigation device is disclosed in
No. 85476 and JP-A-58-199377.

Japanese Patent Application Laid-Open No. 58-85476 discloses a configuration in which map data to be displayed on a screen of a display means is input by a digitizer, so that a minimum necessary route / map to a destination is displayed. It is something that can be done.

Further, the one disclosed in Japanese Patent Application Laid-Open No. 58-199377 makes it easy and appropriate to guide a vehicle to a destination by displaying a directed reservation point mark at an arbitrary position on a screen of a display means. It is something that can be done.

[Problems to be Solved by the Invention] By the way, the in-vehicle navigation device sets a destination at a departure place in order to guide the vehicle to the destination.

However, in the conventional on-vehicle navigation device, when setting a destination of a vehicle, a new destination must be set and input every time the vehicle arrives at the destination, which is inconvenient in that it is inconvenient to use. There is.

In addition, for example, when sightseeing in a city whose geography is unfamiliar, it is necessary to sequentially input the optimal destination from a plurality of destinations, that is, the shortest distance destination every arrival, and if the setting input is incorrect, However, the vehicle may be guided to the wrong destination after passing through the true destination, and the traveling distance may be increased, which is disadvantageous in practical use.

[Object of the Invention] Accordingly, an object of the present invention is to facilitate input operation of a destination setting of a vehicle, avoid inconvenience of causing an erroneous operation of the vehicle, and guide the vehicle to the shortest distance to the destination. It is an object of the present invention to provide an in-vehicle navigation device capable of displaying information and shortening a traveling distance and a traveling time of a vehicle to a destination.

[Means for Solving the Problems] In order to achieve this object, the present invention provides at least:
Map data storage means for storing map data for the travel route of the vehicle, display means for displaying the map for the travel route of the vehicle and the current position, input means for inputting a departure place and a destination of the vehicle, Control means for controlling the display means to sequentially display guidance information to the destination of the vehicle in accordance with a travel route map and a current position, wherein the input means comprises: The control means has a function of sequentially selecting a plurality of randomly input destinations in the shortest distance order, and a function until the vehicle reaches all destinations of the plurality of destinations. And a function of sequentially displaying guidance information from the current position of the vehicle to the shortest distance unarrived destination.

[Operation] With the configuration described above, when a plurality of destinations are randomly input by the input unit, the control unit selects the destinations in order of the shortest distance, and the traveling azimuth detecting unit, the traveling distance detecting unit, and the map data. Based on various data such as traveling azimuth data, traveling distance data, and traveling road map data from various means such as storage means, the display means displays the traveling road map and the current position to display a plurality of destinations. Until the vehicle arrives at all destinations, control is performed to always display guidance information from the current position of the vehicle to the shortest distance unarrived destination, and a plurality of destinations are randomly set and input at the departure point And guidance information such as the direction and the distance to the destination is appropriately displayed.

Embodiment An embodiment of the present invention will be described below in detail with reference to the drawings.

1 to 3 show an embodiment of the present invention. In FIG. 2, reference numeral 2 denotes a vehicle-mounted navigation device mounted on a vehicle (not shown). The in-vehicle navigation device 2 includes a control unit 4 as a control unit. The control unit 4 includes an arithmetic control unit (CPU) 6 for controlling the entire apparatus,
A storage unit (memory) 8 and a display control unit (display controller) for controlling display of a screen 20 of a display device 22 described later.
It is composed of 10 and various communication units (interfaces) 12.

The control unit 4 includes an azimuth sensor 14 as traveling azimuth detecting means for detecting traveling azimuth data of the vehicle by geomagnetism and a gyro, and a vehicle speed sensor 16 as traveling distance detecting means for detecting traveling distance data of the vehicle from wheel speeds and the like. A map data storage device 18 which is a map data storage means for storing map data for the vehicle's travel path, such as a CD-ROM, etc .; a travel road map A, such as a CRT / LCD, etc .; B
A display device 22 having a screen 20 for displaying the navigation information C and an input device 24 as an input device for randomly setting and inputting a plurality of destinations from the departure place to the final destination of the vehicle to a plurality of destinations; Further, a sound (voice) output device 26 as an output means is connected and provided.

The control unit 4 sequentially selects a plurality of destinations randomly input by the input device 24 in the order of the shortest distance, and displays the travel route map A and the current position on the display device 22 based on various data from the various means. Until the vehicle arrives at all destinations of a plurality of destinations, guidance information C from the own vehicle position B to the shortest distance unarrived destination is sequentially displayed in conjunction with the own vehicle position B. And a function of causing

The control unit 4 also has a configuration for controlling the sound (voice) output device 26 to output a notification signal when the vehicle arrives at the destination.

More specifically, the control unit 4 includes a heading sensor 14, a vehicle speed sensor 16, driving heading data from a map data storage device 18,
Display device based on driving data and road map data
Until the vehicle arrives at all the destinations of the plurality of destinations along with the travel route map A and the own vehicle position B on the screen 20 of 22,
The guidance information C from the vehicle position B to the shortest distance unarrived destination is always displayed, and when the vehicle arrives at the destination, a notification signal is output by the sound (voice) output device 26 or a buzzer. It is to control as much as possible.

That is, the conventional in-vehicle navigation device displays the travel road map A and the detected current position of the own vehicle B on the screen 20 of the display device 22 based on the travel azimuth data, the travel data, and the travel map data. Then, guidance information C to the destination is displayed. This is the basic function of the in-vehicle navigation device, and the present invention has a configuration in which a function for guiding to a destination with a finer and shorter travel distance and travel time than before is added to the above-described basic function.

The control operation will be described below with reference to the flowchart of FIG.

When the control is started (100), first, a plurality of destinations from the departure place to the final destination of the vehicle are randomly selected using the travel route map A on the screen 20 of the display device 22 and the input device 24. (Where n is the destination, destination = i = 1, 2,..., I,..., N). Then, the navigation device 2 registers a plurality of destinations in the destination list (102).

Next, all the distances Xi from the destination i in the destination list to the current vehicle position B are calculated (104).

When the vehicle departs, a shortest distance destination l is selected from the vehicle position B of the vehicle, the distance Xl and the direction to the destination l are calculated by the control unit 4, and a part of the screen 20 of the display device 22 is displayed. Is displayed as guidance information C (106).

(Example: “To the destination l, ↑ ○○○○ km” is displayed at the bottom of the screen 20.) When the vehicle approaches the destination l, the distance Xl becomes a specified place (the detection accuracy of the vehicle's own vehicle position B, etc.). Is determined (108), and if it is less than the distance Xl or the specified value (108: YES), it is determined that the target value 1 has been reached, and the distance (110) of the next stage is determined. Do. If the distance Xl is equal to or greater than the specified value (108: NO), the processing of the preceding stage (104)
repeat.

When the vehicle arrives at the destination 1, the arrival at the destination 1 is displayed on the screen 20 of the display device 22, and a sound (voice) output device 26 serving as an output means outputs a buzzer, voice, or the like for a certain period of time. The driver notifies the driver of the arrival at the destination l until the driver manually cancels it (11).
0).

(Example: "Arrival at destination l" is displayed) Next, the destination l is deleted from the destination list (112).

It is determined whether the number of registrations in the destination list is 0, that is, 1 or more (114).
In other words, when the distance is 1 or more (114: NO), the distance (10
Repeat 4). If the number of registrations in the destination list is 0 (114: YES), the arrival of all the destinations set and input in advance at random is notified by a buzzer / voice and display (116).

(Example: "Arrived at all destinations" is displayed.) After the process (116), the control is ended (118).

In addition, each display in the above-mentioned items is displayed on the screen 20 of the display device 22, as shown in FIG.

As described above, according to the on-vehicle navigation device 2, a plurality of destinations can be set and input at the departure place at random, and the vehicle always reaches the destinations of all of the plurality of destinations. It is possible to appropriately display the guidance information C such as the direction and the distance from the vehicle position B to the shortest distance unarrived destination.

For example, it is not necessary to newly set and input the next destination every time when arriving at each of the places on the route to the destination whose geography is unknown, and it is possible to set and input randomly the departure point. Therefore, the input operation of the destination setting is easy, and there is no need to perform the input operation of the next new destination setting during traveling, so that there is no fear that the driving operation of the vehicle may be mistaken. Yes, practically advantageous.

Even if a plurality of destinations are set and input at random, after the plurality of destinations are registered in the destination list, the control unit 4 sets the destination and the vehicle position B in the destination list.
By calculating all the distances to the vehicle and selecting and displaying the shortest distance destination from the vehicle's own vehicle position B, the travel distance and travel time to reach all the destinations can be reduced, and the usability is improved. Can be improved.

[Effects of the Invention] As described above in detail, according to the present invention, at least a map data storage unit for storing map data for a traveling route of a vehicle, and a display unit for displaying a map for a traveling route of a vehicle and a current position. And input means for inputting a departure place and a destination of the vehicle, and control means for controlling the display means to sequentially display guidance information to the destination of the vehicle in accordance with the travel route map and the current position. In the in-vehicle navigation device having, the input means has a function of randomly inputting a plurality of destinations, and the control means has a function of sequentially selecting a plurality of randomly input destinations in the shortest distance order and a vehicle having a plurality of destinations. A function of sequentially displaying guidance information from the current position of the vehicle to the shortest distance unarrived destination until the vehicle arrives at all destinations at the destination is provided. Multiple destinations can be set and input to the system, and the direction from the current position of the vehicle to the shortest unarrived destination is always maintained until the vehicle arrives at all of the multiple destinations. Guidance information such as distance can be displayed properly, making it easy to input a destination setting, and there is no need to input the next new destination setting while driving, so the vehicle driving operation This is practically advantageous because it is possible to avoid the risk of causing errors. In addition, even if a plurality of destinations are set and input at random, the control means calculates all the distances between the plurality of destinations and the current position, and selectively displays the shortest distance from the current position of the vehicle. Therefore, the traveling distance and traveling time until reaching all the destinations can be reduced, and the usability can be improved.

[Brief description of the drawings]

1 to 3 show an embodiment of the present invention, FIG. 1 is a control flowchart of a vehicle-mounted navigation device, FIG. 2 is a block diagram of the vehicle-mounted navigation device, and FIG. 3 is a schematic explanatory diagram of a screen of a display device. It is. In the figure, reference numeral 2 denotes an in-vehicle navigation device, 4 denotes a control unit, 6 denotes an arithmetic control unit (CPU), 8 denotes a storage unit (memory), 1
0 is a display control unit (display controller), 12 is a communication unit (interface), 14 is a direction sensor, 16 is a vehicle speed sensor, 18 is a map data storage device, 20 is a screen, 22 is a display device, 24 is an input device, 26 A is a sound (voice) output device, A is a map for a traveling route of a vehicle, B is a current position of the vehicle, and C is guidance information.

Claims (2)

(57) [Claims] 1. A map data storage means for storing at least map data for a travel route of a vehicle, a display means for displaying a map for a travel route of the vehicle and a current position, and a departure place and a destination of the vehicle. An input means for inputting the information and a control means for controlling the display means to sequentially display guidance information to the destination of the vehicle in accordance with the map for the traveling path and the current position, and The input means has a function of randomly inputting a plurality of destinations,
The control means has a function of sequentially selecting a plurality of destinations input at random in the shortest distance order and a shortest distance from the current position of the vehicle until the vehicle reaches all the destinations of the plurality of destinations. A navigation function for sequentially displaying guidance information to a destination that has not arrived. 2. A traveling direction detecting means for detecting traveling direction data of a vehicle, a traveling distance detecting means for detecting traveling distance data of the vehicle, and a map data storing means for storing map data for a traveling path of the vehicle. An on-vehicle navigation device having display means for displaying a map for a travel route of a vehicle and a current position, and input means for inputting a departure place and a destination of the vehicle, and informing when a vehicle arrives at a destination. An output unit for outputting a signal is provided, a plurality of destinations randomly input by the input unit are sequentially selected in the order of the shortest distance, and a map for a traveling route and a current position are displayed on the display unit based on various data from the various units. Until the vehicle arrives at all the destinations of the plurality of destinations, the guidance information from the current position of the vehicle to the shortest distance unarrived destination is sequentially displayed. Vehicle navigation apparatus according to the first term of the appended claims the control means is provided for controlling so as to output a notification signal by said output means when you arrive at the destination with.