JP3445236B2 - Navigation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation apparatus which displays map information and a mark indicating the current position information in the map information to assist driving of a moving body such as an automobile. The present invention relates to a navigation device that stores track data of a route and displays the data.

[0002]

2. Description of the Related Art In a conventional car navigation system,
GPS (Global Positioning System) to measure the current position by the positioning means, such as, a self-position to move every moment by displaying a map of the point where the the positioning in <br/> both the display in its map, the path passing through Trajectory data is stored, and the trajectory of the passing route to the current position is displayed together with the display of the current position.

The track data is obtained by sequentially storing and collecting the measured current position data in a ring buffer memory having a fixed storage capacity at every fixed time or every movement of a certain distance. When the storage capacity of the buffer memory is exceeded, oldest track data is overwritten on new data in order, so that a fixed amount of track data is constantly collected. In the conventional display of the trajectory, the trajectory is displayed based on the trajectory data stored in the ring buffer memory. Therefore,
The trajectory of a certain area determined by the storage capacity of the ring buffer memory is displayed immediately before the current position of the traveling route.

[0004]

In the conventional display of a trajectory, only the trajectory of the traveled route is displayed. However, when using a car, the user frequently moves to various destinations, and often goes back to the destination where he or she once went. Normally, once you have traveled to a destination, even once you have been there, it is not easy to remember the path, and you need to travel several times before you can go to the destination without hesitation It is.

[0005] Also, in places where you only go occasionally, the memory of the route to the destination is lost, and even though you have been once, refer to the map before or during the destination. Therefore, it is necessary to check the route to the destination.

Accordingly, the present invention saves the travel route traveled in the past as trajectory data, and makes it possible to refer to the same destination again, for example, easily, so that the driving support is made effective. In particular, it is an object of the present invention to provide a navigation device with improved operability for storing trajectory data.

[0007]

The navigation system of the present invention the order to that to achieve the above object, according to an aspect of the current position measuring means for measuring the current position of the mobile, and the map information storage means for storing map information, a navigation device provided with a display means for displaying the map information and the mark indicating the current position, sequentially collects data of the current position, its yield
The locus acquisition means for temporarily storing the current data as locus data, referring to the temporarily stored locus data
Trajectory storage means for storing as trajectory data;
When an instruction to delete data is input, the stored
In addition to deleting the locus data, the deletion instruction input is not performed.
The current position of the moving object at the time of
A trajectory management means for the collection start point of the data, the <br/> comprise a are characterized.

[0008]

According to the navigation apparatus of the present invention , the trajectory
The collecting means sequentially collects data of the current position, and collects the data.
Is temporarily stored as locus data. Soshi
And the trajectory storage means stores the temporarily stored trajectory data.
Save as reference locus data. In this case, track management
Means is stored when an instruction to delete the locus data is input.
Deletes the track data that has been deleted and inputs a delete instruction.
The current position of the moving object at the time when
Data collection start point.

Thus, when collecting reference trajectory data,
Input instruction to delete the track data currently being collected.
The current position of the moving object at the time
As a collection start point, reference trajectory data of a new collection area
Since collection can be started, track data you want to save
Operation when specifying the area of the data (reference trajectory data).
The number can be reduced, the convenience can be improved, and the driving of the moving object can be effectively supported.

[0010]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a configuration diagram of an in-vehicle navigation device according to an embodiment of the present invention.

As shown in FIG. 1, the navigation apparatus according to the present embodiment receives a positioning radio wave to determine its own current position.
A direction sensor 21 as current position positioning means for detecting the traveling direction of the vehicle by geomagnetism or a gyro, a traveling sensor 22 as current position positioning means for detecting a traveling state such as a vehicle speed and a traveling distance; CD-ROM 23 serving as map information storage means as a database, CD-ROM driver 24 for reading information from the CD-ROM 23, and display for displaying maps and other information
A CRT (Cathode Ray Tube) 25 as a means, an operation switch 26 for inputting an operation, and a trajectory collection means, a trajectory storage means and a trajectory management means for controlling the entire apparatus.
The controller 27 is provided.

[0012] GPS receiver 20, the latitude by a GPS (Global Positioning System) receiving a radio signal from a satellite, that generates the current position data indicating the longitude. Also, the direction sensor 21 and the travel sensor 22, the latitude, the current position data indicating the longitude is calculated their from those of the detection signal within the controller 27. These sensors and the like are used properly depending on the situation or used together to increase the accuracy of the current position for positioning.

The controller 27 includes an MPU ( Microprocessor Unit ) for performing data processing and other various controls, an MPU
ROM ( Read O) for storing programs and other data
nly Memory ) and RAM ( Random Access Memory ), non-volatile RAM with battery backup, calendar clock for generating year / month / day / hour data, RS232C interface for external data, and various interfaces not shown It is provided with. The non-volatile RAM is a trajectory collection device that stores trajectory data to be collected.
A ring buffer as a stage, a plurality of reference trajectory data buffers for storing reference trajectory data as trajectory storage means, and an area of a trajectory management table for managing the reference trajectory buffer are set and used.

[0014] In the above configuration, the controller 27,
When the switch is turned on, to obtain current position data by G PS receiver 20 or the direction sensor 21 and the travel sensor 22, the map information the CD-ROM corresponding to the current position
Read from the CD-ROM 23 via the driver 24,
The read map information and the current position mark are displayed on CRT2.
5 is displayed. Further, the current position data is periodically obtained, and the display of the current position mark and the current position map accompanying the movement of the own position is updated. The operation switch 26
Various information other than maps can be stored on CD-R
The data is read from the OM 23 or the ROM and displayed on the CRT 25 . Below, a process related to the trajectory described.

[0015] The controller 27 is in the trajectory yield Shusho sense, conventional to obtain current position data from the sensors for each or every predetermined distance a certain time during running as well, and stored in the ring buffer as the route data. The trajectory data is collected and stored in a state where feature points such as curved intersections are extracted from the current position data and compressed. As a result, long-distance trajectory data can be stored. Locus data stored in the ring buffer is utilized in the same manner as heretofore trajectory table 示処 sense. That is, in the path table 示処 sense, by the trajectory data stored in the ring buffer, along with an indication of the current position, the locus of passage route to immediately before is displayed on the screen. In the present embodiment, the trajectory display when displaying the current position is distinguished as “normal display”, and the trajectory display irrelevant to the current position is distinguished as “reference display” of the trajectory. The trajectory table 示処 management manages the trajectory display pointer, the locus data indicated by the trajectory display pointer, displays a trajectory of the "normal display" and "reference display".

Next, the processing as the trajectory management means will be described. FIG. 2 shows a processing flowchart in which the controller 27 operates as a trajectory management unit. Various processes of the trajectory are started by inputting an instruction from the operation switch 26. As shown in the flowchart, when there is an instruction input of the trajectory processing, the controller 27 displays a menu and prompts the user to select each processing (step S1).
0). The controller 27 checks the input after the menu display, switches the reference display to the normal display according to the input instruction (step S11), the reference display processing of the trajectory (step S12), and internally stores the trajectory data (step S12). One of the following processes is performed: Step S13), trajectory data erasing process (Steps S14 and S15), and reference trajectory place name editing process (Step S16). In addition, the controller 27 performs external storage processing of the reference trajectory data via the RS232C interface and externally inputs the reference trajectory data.

First, the trajectory data erasing process will be described. As shown in FIG. 2, when an erasing process instruction is input, the trajectory data erasing process stored in the ring buffer is performed.
That is, a process of setting the trajectory data collection start flag and initializing the start pointer and the current position pointer of the ring buffer is performed (step S14). Next, while obtaining the current position data and storing the current position at that time as the collection start point in the first area of the ring buffer,
The place name data is obtained as the information of the start point, the name of the start point is determined, and set in a predetermined storage area (step S15). A method for obtaining the place name data will be described later.
By this erasing process, the collection of the locus data from the current position is newly started, and the locus data is stored in the ring buffer as the vehicle travels.

Next, the internal storage processing of the locus data will be described. FIG. 3A shows a flowchart of the internal storage processing of the locus data. As shown in the flowchart, when there is an instruction input for the internal storage processing of the trajectory data, the controller 27 sets the current position at that time as the collection end point, obtains the place name data of the collection end point as information of the end point, and obtains the name. The name of the point is used (step S20). Further, date information and time information are obtained from the calendar clock (steps S21 and S22). Then, the obtained information is stored in the reference trajectory buffer designated as the trajectory data collection area information, and the trajectory data stored in the ring buffer is transferred to a predetermined area of the reference trajectory buffer and stored. Then, management information such as the management number and the storage location of the stored reference trajectory data is recorded in the trajectory management table. The trajectory data stored in the reference trajectory buffer is shown in FIG.
As shown in (b), it is composed of a trajectory management table and a reference trajectory data buffer. The trajectory management table stores an ID indicating a storage number, a length (data amount) of trajectory data, a collection time and a collection date, collection area information including a start place name and an end place name, and stored in a reference trajectory data buffer. The address pointer of the trajectory data is stored for each collection area. The reference trajectory data buffer stores reference trajectory data for each collection area.

For obtaining the above-mentioned start place name and end place name
To explain, the acquired place name data is CD-RO
Municipality name in map information recorded in M23
Uses the figure name. In FIG. 4A, the municipal name is used.
FIG. 4 (b) is an explanatory diagram of the method when using
An explanatory diagram in the case of use is shown. Place to use city name
In this case, for example, as shown in FIG.
At the end of the track data collection end point (x)
And the coordinates of the collection end point (x),
Display position of each municipal name (y, z) displayed on the map
Distance to coordinates (l ₁, L_Two), And the collection end point
The name of the municipalities closest to (x) (Tokorozawa
City) is selected. Also recorded on the CD-ROM 23
Map information, data is formed in display image units (figure leaves)
Each of the displayed images has a leaf name (FIG. 4B).
In the example shown in (1), northern Kawagoe and southern Kawagoe are added. So
For example, in the case of using the leaf name of
As shown in (b), the collection end point of the locus data
The leaf name of the displayed image (South Kawagoe in the example shown) was selected.
You.

Next, the trajectory reference display processing will be described. FIG. 5A shows a flowchart of the trajectory reference display processing. As shown in the flowchart, when the reference display is instructed, the controller 27 displays a list table of the stored reference trajectories according to the management data stored in the trajectory management table, and displays a trajectory desired by the user. (Step S30). FIG. 5B shows a display example of a reference trajectory list table. Next, when there is an instruction input for selecting a trajectory to be displayed for reference, the address of the reference trajectory buffer storing the selected trajectory is obtained from the trajectory management table, and the trajectory display pointer is set (steps S31 and S32). . Then, to start the trajectory table 示処 sense (step S33). This allows the controller 2
7 starts the trajectory display processing, displays a map of the starting point of the reference trajectory and displays the trajectory from the starting point. Further, the display of the map and the locus is updated by inputting the instruction. To return to the normal display from the reference display state, as shown in FIG. 2, by displaying the menu, selecting the normal display and inputting an instruction, the locus display pointer is set to the current position point of the ring buffer. (Step S11) Normal display is performed.

Next, the place name editing process will be described. In FIG.
4 shows a flowchart of a place name editing process. As shown in the flowchart, when an instruction to edit a place name is input, the controller 27 displays a list table of the stored reference trajectories according to the management data stored in the trajectory management table, and displays the list of the displayed reference trajectories. The user is prompted to select a place name to be changed from the start place name and the end place name (steps S40, S40).
1). When there is a selection input of a place name to be changed, the reference locus buffer to which the selected place name belongs and the storage address of the selected place name therein are obtained and stored (step S4).
2). Next, the user is prompted to input a changed place name and manages the input of the place name (step S43). Then, when the changed place name is inputted, the storage address of the selected place name is
The input place name is stored and rewritten (step S
44). This completes the change of one place name.

Next, the process of storing the locus data to the outside and the process of inputting from outside will be described. The process of storing the locus data to the outside and the process of inputting from the outside are started when a command is input from a personal computer or the like via the RS232C interface. That is, the controller 2
When a command to save the trajectory data to the outside is input via the RS232C interface, the data 7 sequentially outputs the data stored in the reference trajectory buffer via the RS232C interface. When an input command for reference trajectory data is input from the outside, reference trajectory data input via the RS232C interface is stored in a predetermined reference trajectory buffer for each reference trajectory.

As described above, in the navigation apparatus of the present embodiment, when there is an instruction to save, the trajectory data collected during traveling is saved as reference trajectory data, and when there is an instruction to display a reference, the designated reference trajectory is displayed. The data is being displayed. Thereby, for example, when frequently going to a new destination, it is possible to easily and repeatedly refer to the trajectory of the first time until the user gets used to the route, which is useful for quickly learning the route. In addition, even at destinations that occasionally go, the trajectory of the trip once is stored in a laptop personal computer or the like,
When the user goes again, the user can input the trajectory data from the personal computer, and can display and refer to the travel route at the time of the previous travel, which is very effective in supporting driving to the destination.

In the above embodiment, the reference data buffer may not be provided inside the navigation device, and the trajectory data may be directly outputted from the ring buffer to the outside and stored. As means for storing the locus data to the outside, a rewritable magneto-optical disk device, an IC
A configuration including an external storage device such as a card device may be adopted.

[0025]

As described above, in the navigation apparatus of the present invention, when the reference trajectory data is collected, the time when the erasure instruction of the currently collected trajectory data is input is input.
Starting collection of trajectory data referring to the current position of the moving object in
Since collection of reference trajectory data of a new collection area can be started as a point, the trajectory data to be saved (reference
Even when the area of the trajectory data is specified , the number of operations can be reduced, the convenience can be improved, and the driving of the moving object can be effectively supported.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an in-vehicle navigation device according to an embodiment of the present invention.

FIG. 2 is a processing flowchart of trajectory management in the embodiment.

FIG. 3 is a diagram illustrating a flowchart of a trajectory saving process and a structure of saved data in the embodiment.

FIG. 4 is an explanatory diagram of a point name acquisition in the embodiment.

FIG. 5 is a flowchart of a trajectory reference display process and a display example of a reference trajectory table according to the embodiment.

FIG. 6 is a processing flowchart of place name editing in the embodiment.

[Explanation of symbols]

20 ... GPS receiver 21… Direction sensor 22… Running sensor 23 ... CD-ROM 24 ... CD-ROM driver 25 ... CRT 26 ... Operation switch 27 ... Controller

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) G01C 21/00 G08G 1/0969 G09B 29/00 G09B 29/10

Claims (3)

(57) [Claims] 1. A navigation system comprising: a current position measuring means for measuring a current position of a moving object; a map information storing means for storing map information; and a display means for displaying the mark indicating the current position and the map information. The device sequentially collects the data of the current position, and collects the collected data.
Locus collecting means for temporarily storing the data as the locus data
And the temporarily stored trajectory data as reference trajectory data.
Locus storage means for storing and storing the locus data when an instruction to delete the locus data is input.
Along with the trajectory data being deleted,
Ahead of the current position of the moving object at the time of input
Trajectory management means as a collection start point of reference trajectory data
Navigation apparatus characterized by comprising, when. Wherein said trajectory management means, when the storage instruction input trajectories data is, when the saving instruction input has been made
Collecting the reference trajectory data of the current position of the moving object at a point
The end point, and the save instruction input from the time when the erase instruction is input
Is stored in the trajectory collecting means until the time when
The trajectory data obtained is assigned to the area where the mobile object has moved during the period.
2. The navigation device according to claim 1, wherein the data is stored in the trajectory storage means together with place name data corresponding to the area . 3. A current position measurement for measuring a current position of a moving body.
Location means, map information storage means for storing map information, and
A mark indicating the current position and a display for displaying the map information
Trajectory that collects data of the current position and generates trajectory data
Collection means, wherein the trajectory collection means deletes the trajectory data being collected.
Collection of trajectory data for a new collection area
Starts and responds to the input of an instruction to save the track data being collected
From the input of the erase instruction to the input of the save instruction
A navigation device that stores trajectory data set as an area and stores a place name corresponding to the collection area.