JP2001264083A - Nearest facility display method for navigation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To update a list display of nearby facilities. SOLUTION: When a genre GE of facilities is specified by a driver, a navigation system reads the data of all the facilities in the assigned genre GE from a facility data base stored in storage medium, and displays a list of facility names NM, distance DE and directions DN in the order distance close to an own vehicle position on the facilities existing within the specified distance from the own vehicle position. With each movement of the own vehicle position by a prescribed distance (100 m, for instance), the navigation system confirms the positions of the facilities, existing within a prescribed distance from the own vehicle position out of the facilities of the assigned genre and updates the list display of the facility names NM, distance DE and directions DN, in the order of distance close to the own vehicle position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for displaying a nearest facility of a navigation device, and more particularly to a method of searching a storage medium for facilities located within a predetermined distance from a vehicle position or a predetermined number of facilities in the order of proximity to the vehicle position. The nearest facility of the navigation device that displays a list of facility names or landmarks in order from the facility closest to the vehicle position, the distance from the vehicle position to each facility, and the direction of each facility viewed from the vehicle position on the screen. Display method.

[0002]

2. Description of the Related Art A navigation device which guides a vehicle and enables a driver to easily arrive at a desired destination detects a position of the vehicle and reads a position around the position of the vehicle from a ROM disk such as a DVD-ROM. Is read out, a map image is displayed on a display screen, and a vehicle position mark is superimposed and displayed at a predetermined position on the map image. Then, as the current position changes due to the movement of the own vehicle, the own vehicle position mark on the screen is moved, or the own vehicle position mark is fixed at a predetermined position such as the center of the screen, and the map is scrolled. The map information around the car position can be understood at a glance.

[0003] The navigation device has a route guidance function of searching for a guidance route from a departure point to a destination, displaying the guidance route on a map, and performing intersection guidance. Once you have entered your departure and destination, the navigation controller of the navigation device will automatically determine the optimal guidance route,
The nodes (latitude and longitude) constituting the guidance route are successively stored in the guidance route memory. At the time of actual traveling, a search is made for a guidance route included in the map display area of the screen from the node sequence stored in the guidance route memory, and the guidance route is displayed so as to be distinguishable from other roads. When a vehicle enters a predetermined distance from an approaching intersection, an intersection guide map (an enlarged view of the intersection and an arrow indicating a traveling direction at the intersection, a distance from the vehicle position to the intersection, an intersection name, a landmark around the intersection). , Etc.), so that it is possible to know which road should be run and in which direction the vehicle should go at the intersection.

[0004] Further, for example, a specified genre (industry) existing within a predetermined distance from the position of the vehicle is provided in the navigation device.
Of facilities, and the name of the searched facility or landmark,
The nearest facility search function that displays the distance to each facility and the direction of each facility in a list is provided. The driver can determine the positional relationship between the facilities of the specified genre (industry type) existing around the current vehicle position and the vehicle position. Can be easily known. FIG. 4 is a diagram illustrating a nearest facility search function in a conventional navigation device. When the menu key on the remote control is pressed, the navigation device displays a main menu MMN and a submenu SMN on the map MP. Here, using the joystick key, the main menu M
When the item “search” of the MN is selected, the navigation device displays a submenu SMN of the item “search” (see FIG. 4A). Since the sub-menu SMN includes an item "nearest facility", when the item is selected using the joystick key, the navigation device is switched to the one shown in FIG.
As shown in (b), a genre (industry) list GL classified in advance by facility genre (industry) is displayed. still,
Genre names that cannot be displayed on one screen can be displayed by scrolling.

[0005] In such a state, "convenience store"
When the navigation device is selected, the navigation device reads the data of all the convenience stores from the facility database stored in the storage medium, and searches the convenience stores existing within a predetermined distance from the own vehicle position in order of the convenience store name, the own vehicle The nearest facility list EL indicating the distance from the position to each convenience store and the direction of each convenience store as viewed from the own vehicle position is displayed (see FIG. 4C). The list of the remaining convenience stores that cannot be displayed at one time can be displayed by scrolling. In other words, by displaying the list of the nearest facility search function, the driver can confirm the position of the facility of the designated genre existing around the current vehicle position by specifying the genre (industry type).

[0006]

By the way, the list display by the nearest facility search function of such a navigation device is such that once the current positional relationship between the own vehicle and each facility is displayed, the contents are displayed and the vehicle is displayed. The contents of the list display were not updated even if the position of the own vehicle was moved during traveling. For this reason, if a driver drives a car and turns right or left at an intersection, etc. after displaying a list of nearby facilities,
The positional relationship between the own vehicle position after traveling and the facilities displayed in the list was completely different. In addition, when it is desired to update the list of the nearest facilities displayed once, the list of the nearest facilities must be terminated and the list of the nearest facilities must be displayed again. For this reason, the driver had to operate the remote controller while driving in order to update the list display, and felt troublesome.

From the above, it is an object of the present invention to provide a facility name or landmark once displayed as a list by the nearest facility search function,
It is an object of the present invention to provide a nearest facility display method of a navigation device that updates the display content of the distance from the own vehicle position to each facility and the direction of each facility viewed from the own vehicle position as the own vehicle travels.

[0008]

According to the present invention, according to the present invention, a list of a facility name or a landmark, a distance from a vehicle position to each facility, and a direction viewed from the vehicle position is displayed according to traveling. Achieved by updating.

That is, by updating the list display by the nearest facility search function as needed, the driver can know the appropriate positional relationship between the position of the vehicle currently running and each facility of the specified genre (industry type), Each facility of the specified genre displayed is easily selected as a destination.

[0010]

(A) Outline of the present invention FIG. 1 is a diagram for explaining an outline of the present invention. In the figure,
GE is the genre of the facility specified by the driver, NR is the number of facilities searched for the genre GE specified within the facilities located within a predetermined distance from the vehicle position, and NM is the facility of the specified genre GE and a predetermined distance from the vehicle position. The names of the facilities that exist within the vehicle and are displayed in the order from the own vehicle position, DE is the distance from the own vehicle position to each facility, and DN is the direction of each facility as viewed from the own vehicle position. When the genre GE of the facility is designated by the driver, the navigation device reads out all facility data of the designated genre GE from the facility database stored in the storage medium, and for the facility existing within a predetermined distance from the own vehicle position, the navigation apparatus. Facility name NM in order of distance from car position
And a list of distances DE and directions DN is displayed. Every time the vehicle position moves a predetermined distance (for example, 100 m), the position of the facility within a predetermined distance from the vehicle position in the facility of the designated genre GE is confirmed, and the facility names are arranged in the order of distance from the vehicle position. The list display of the NM, the distance DE, and the direction DN is updated. In other words, the nearest facility list display is updated each time the vehicle position moves a predetermined distance, so that the driver can obtain the latest facility location information of the designated genre.

(B) Configuration of Navigation Apparatus FIG. 2 is a configuration diagram of a navigation apparatus according to the present invention. 1
1 is a CD-ROM, D for storing map information, facility information, etc.
A ROM disk such as a VD-ROM, 12 is a ROM disk controller for controlling reading of map information and facility information from the ROM disk 11, and 13 is a position measuring device for measuring a current position of the vehicle, and detects a moving distance. Speed sensor, gyro for detecting moving direction, CP for position calculation
It is composed of U, GPS receiver and the like. 14 is a map information storage unit that stores map information read from the ROM disk 11, 15 is a facility information storage unit that stores facility information read from the ROM disk 11, 16 is a menu selection operation, an enlargement / reduction operation, and cursor movement ( Map scroll)
A remote controller 17 for performing an operation, a destination input operation, and the like, and a remote controller interface 17 for controlling communication with the remote controller 16 are provided.

Reference numeral 18 denotes a processor (CPU) for controlling the entire navigation apparatus; 19, a ROM for storing various programs for searching for the nearest facility, guidance route; etc., RAM, for storing processing results, etc., 21 based on map information. A display controller that generates a map image and controls the display of various information.
RAM, 23 is a display device, and 24 is a bus line in the navigation device.

(C) Processing Flow of Navigation Apparatus of the Present Invention FIG. 3 is a diagram illustrating a processing flow of the navigation apparatus of the present invention. When the item “nearest facility” of the submenu is selected by the driver's remote control operation and the genre of the desired facility is selected (step 101),
The CPU 18 activates a program for searching for the nearest facility stored in the ROM 19, and the ROM disk controller 1
Then, all facility data of the designated genre is stored in the facility information storage unit 15 from the facility database recorded on the ROM disk 11 via the storage unit 2 (step 102). Next, the CPU 18 searches for facilities existing within a predetermined distance from the vehicle position measured by the position measuring device 13 from all facility data stored in the facility information storage unit 15 and stores the searched facility data in the RAM 20 ( Step 103).

Next, the CPU 18 calculates the facility name, the distance from the own vehicle position, and the direction viewed from the own vehicle position as the closest facility data from the facility data in the RAM 20, and sorts the calculated closest facility data in the order from the closest to the own vehicle position. After rearranging and creating a list image of the nearest facilities in the display controller 21, the display device 23 is displayed via the VRAM 22.
To display a list of nearest facilities. (Step 10
4).

Thereafter, the CPU 18 determines whether or not the vehicle position measured by the position measuring device 13 has moved a predetermined distance from the vehicle position measured in step 103 (step 10).
5) If it is moving, the process proceeds to step 103 to acquire facility data within a predetermined distance from the current position of the vehicle, and to display a list of the latest nearest facilities. If the position of the vehicle has not moved a predetermined distance, the CPU 18 determines whether or not the driver has instructed to cancel the list display of the nearest facility from the remote control interface 17 (step 1).
06) If there is, the process is terminated; if not, the process proceeds to step 105 while continuing to display the nearest facility list, and it is determined whether or not the own vehicle position has moved a predetermined distance.

In the above description, the display of the list of the nearest facilities is updated when the position of the vehicle has moved a predetermined distance. However, when a predetermined time has elapsed or the vehicle has turned around an intersection, a trigger for updating the list is used. It is also possible to change as.

[0017]

As described above, according to the present invention, the list display of the nearest facilities is updated in accordance with the traveling, so that the driver can determine the appropriate positional relationship between the current vehicle position and the facilities of the designated genre. It is possible to confirm, and it becomes easy to select the listed facilities as destinations.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an outline of the present invention.

FIG. 2 is a configuration diagram of a navigation device of the present invention.

FIG. 3 is a processing flowchart of the navigation device of the present invention.

FIG. 4 is a diagram illustrating a list display of a nearest facility in a conventional navigation device.

[Explanation of symbols]

 GE ・ ・ Genre of facility designated by driver NR ・ ・ Total number of searched facilities NM ・ ・ Facility name DE ・ ・ Distance from own vehicle position to each facility DN ・ ・ Direction of each facility viewed from own vehicle position

Claims (1)

[Claims] 1. A storage medium is searched for a predetermined number of facilities located within a predetermined distance from the own vehicle position or nearer to the own vehicle position, and a facility name or landmark is sequentially searched from the closest facilities to the own vehicle position. In a nearest facility display method of a navigation device that displays a list of a distance from a car position to each facility and a direction of each facility viewed from the own vehicle position on a screen, the facility name or the landmark and the own vehicle position A list display of a distance from the vehicle to each facility and a direction as viewed from the own vehicle position is updated in accordance with traveling, a nearest facility display method of the navigation device.