JP3450942B2 - Navigation device and destination setting method - 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 device and a destination setting method for the navigation device , and more particularly to a facility installed in a moving body such as a vehicle and existing near the present location. about the navigation device capable of setting a destination from.

[0002]

2. Description of the Related Art In recent years, GPS (Global Positioning System)
stem) Using a receiver or the like to detect the current position of the vehicle or the like with high accuracy, and searching the map data stored in the CD-ROM for map data near the current position,
Many navigation devices having a function of displaying a current position mark together with a map of this portion have been proposed.
One of the functions of the navigation device is a route guidance function that guides and guides a moving body toward a set destination.

A conventional car navigation device having such a function is shown in FIG.
A device main body 10 which is a computer system including a CPU 11 and a ROM 13 connected to the CPU 11 via a bus line 12, and various commands input via an input circuit 21 from a remote controller 20 connected to the device main body 10 by a cable. Input processing program 22 for processing etc.
CD-ROM drive 3 in which a CD-ROM in which map data has been recorded is set
A map reading means including a map reading program (not shown) for controlling 0 to read the map data 33 is provided.

The car navigation system also converts the map data 33 and other data such as the traveling direction of the vehicle into video data and sends it to the dual port RAM 41a and controls the drawing processing circuit 41 to display it on the monitor 40. The speaker 5 by controlling the display means including the monitor display program 42 and the like, and the speaker drive circuit 51.
It also comprises a voice output means such as a voice output program (not shown) for generating a voice alarm from 0.

Further, this car navigation system is
Radio waves from GPS satellites are sent to GPS antenna 60 and GP
A position detection program 62 that detects the current position (x, y) based on the information received through the S reception circuit 61 and sent on this radio wave, and stores these in the storage area 63.
In addition to this, a GPS positioning system including the above is also provided, but in addition to this, a process of storing a point designated on the map as a destination (x ′, y ′) in the storage area 73 based on the displayed map. Destination setting means embodied in the destination setting program 82, and information of the intermediate route from the current position (x, y) to the destination (x ', y') is monitored based on the map data 33. It also includes a destination guidance means embodied by a destination guidance program 72 for outputting to the speaker 40 or the speaker 50 to perform guidance / guidance processing.

There are some methods for selecting and setting an intermediate route from the current position to the destination in the destination guiding means, one of which is manually performed by the user of the apparatus and the other of which is automatically performed by the apparatus. In any case, it is necessary to set the destination before the route guidance. In order to set the destination, the destination must be selected and decided.

In determining the destination, the user of the device may have already been specifically selected as, for example, a certain hotel before starting the traveling of the moving body, or the destination may be present near the present location during traveling. In some cases, the facility is searched for.
In the latter case of these, it is required to present the user with appropriate facility information based on the current location that changes according to the movement of the mobile body. Therefore, for example, the facilities of the same type such as a hotel are extracted from all the facilities near the current location and displayed, and any one of these hotels is displayed.
One is selected as the destination.

As a method for presenting such auxiliary information near the current location, the one described in Japanese Patent Laid-Open No. 62-151881 is known. This is because when the device user specifies the facility type information to be presented such as a hotel or parking lot, in addition to displaying the current location of the moving body, the mark of the facility belonging to the specified facility type is also displayed on the map. By displaying the map at the position, it is intended to prevent an extra mark from being displayed on the map in an overlapping manner, thereby keeping the map easy to see.

[0009]

In such a conventional navigation device, it is assumed that the map of the attached facility is also displayed, and the mark of the attached facility is displayed over the previously displayed map. To be done.

However, the information actually required when the user selects the destination from the facilities near the current position corresponds to the information on the positional relationship between the current position of the own vehicle or the like and the facility position of the relevant type. An accurate map itself, which is detailed information about each facility of each type, is not directly necessary when selecting and setting a destination. The map data is really needed when guiding and guiding to the destination after setting the destination.
Rather, it can be said that the visibility of the facility mark deteriorates if a map exists in the background of the facility mark when selecting and setting the destination.

For this reason, when the current position mark and facility mark are superimposed and displayed on the map at the time of selecting and setting the destination, even if the facility to be displayed is limited by type, data such as roads with low necessity is displayed. The facility mark is confused with the display of, and the display is not so easy to see. Therefore,
The challenge is to make it easy to set the destination by making it easy to see the display when selecting and setting the destination.

In addition, when the destination is selected and set up, in addition to the large amount of map data stored in the CD-ROM, auxiliary data such as facility data also stored in the CD-ROM is accessed. Therefore, the display timing tends to be delayed. Therefore, it is also an issue to quickly display the destination selection / setting.

The present invention has been made in order to solve such a problem, and an object thereof is to realize a navigation device in which the display is easy to see when selecting and setting a destination. Another object of the present invention is to realize a CD-ROM having a configuration in which the navigation device can quickly perform easy-to-see display when selecting and setting a destination.

[0014]

Means for Solving the Problems] To explain the means for solving such a problem as follows.

First, the position for detecting the current position of the mobile unit.
Position detection means and the current position detected by this means
Map display means for displaying a map as a reference, and the current position
Guide to guide or guide the route from the storage to the destination
In a navigation device equipped with steps,
Setting means and the map display displayed by the map display means.
Recording medium on which the data and the destination setting information data are recorded
And the destination setting means relates to the current position.
A means for narrowing down the destination from the information data,
Hide the map display by the map display means and narrow down
For each destination, the position of the current position and each destination
Destination display means for displaying a destination selection screen showing the positional relationship
And select from the destinations displayed by the destination display means.
The purpose of confirming the selected one as the destination to be set
It is characterized in that it comprises a means for determining a place.

Secondly, the navigation device
The destination setting means uses the current position as a reference.
The information data on the destination that falls within the specified range
Means to read from recording media and read by the means
Obtain the absolute position information of each destination from the information data
Therefore, for each destination, calculate the relative position from the current position.
And a means for outputting the current position according to the relative position.
While narrowing down the destinations that fall within the setting range around the position,
The current position and each destination on the destination selection screen
It is characterized by obtaining the positional relationship of.

Thirdly , in the above navigation device,
And change the setting range according to the instruction.
It is characterized by having steps.

Fourthly , the above-mentioned destination determining means
After the destination is set, the map display means
In addition to displaying the map based on the position,
Route guidance or route guidance to the destination set in the guiding means
It is characterized by having means for performing.

Fifth, the position for detecting the current position of the moving body.
Position detection means and the current position detected by this means
Map display means for displaying a map as a reference, and the current position
Guide to guide or guide the route from the storage to the destination
And the destination setting information data is recorded.
Destination of navigation device with recorded recording medium
In the setting method, a predetermined range based on the current position
Enter the information data relating to the destination from the recording medium
The reading procedure and the information read by the procedure.
Obtain absolute position information of each destination from the report data, and
For calculating the relative position from the current position for
And the destination within the set range around the current position
Procedure for narrowing down from the opposite position, and the location by the map display means
The figure display is hidden and the aperture is reduced based on the relative position.
About the destination that has been loaded between the current position and each destination
The procedure for displaying the selection screen showing the positional relationship and the procedure
One of the destinations displayed in
The procedure is to determine the destination as a destination.
It

Such a navigation device or navigation
Set the destination according to the destination setting method
Access to the map data recorded on the recording medium
There is no need to do it, only for information data of destination setting
You can set the destination quickly because all you have to do is access
Will be possible.

When setting the destination, the map display
Hide the map display by the column once, and
Staff to narrow down the destination from the information data on the recording medium,
About the destinations that have been narrowed down,
Displayed the destination selection screen showing the positional relationship of
Therefore, when a candidate destination is displayed,
Or, the display of a map that deteriorates visibility for selecting a destination
It does not remain, and the display when selecting and setting the destination is
The layers are easier to see.

Furthermore, without using a map, the current position and each eye
Since it is possible to display the positional relationship with the target area,
A destination near the current location can be set on the easy-to-read screen
become.

Then, the purpose displayed on the destination display screen
If any one of the destinations is selected, this destination
It will be confirmed as the destination for route guidance / guidance.

Furthermore, in order to achieve the above-mentioned action, the purpose is
When setting the ground, enter the specified range based on the current position
Read the information data related to the destination from the recording medium,
From the information data read by this, absolute of each destination
Obtaining location information, relative to the current location for each destination
The current position is calculated by calculating the position and using the calculated relative position.
While narrowing down the destinations that fall within the setting range around,
It is also possible to obtain the positional relationship on the site selection screen.
it can.

As a further feature, the above setting range is changed.
By making it possible, it is possible to narrow down the selection candidates
And the purpose that is displayed when you actually narrow down the selection candidates
Since the number of places can be narrowed down, it becomes easy to confirm the selection target.
Therefore, according to this, when selecting and setting the destination,
Realization of a navigation device in which the display is easier to see
be able to.

Furthermore, after setting the destination, the destination is always
Display the figure so that you can guide the route, etc.
There is. Therefore, according to this, the display of the destination is
Immediately follow the route guidance to the set destination on the rake.
A navigable navigation device can be realized.

[0027]

[0028]

[0029]

[0030]

DETAILED DESCRIPTION OF THE INVENTION The navigation apparatus of the present invention, illustrating a mode for carrying out the same.

[0031] In the navigation device of the First Embodiment embodiments, in performing the selection and setting of the destination prior to the route guidance, guidance from the current position to the destination, basically, route guidance Since it is not necessary to use the map data used for displaying the current location on the map, unlike the conventional art, detailed map data covering the cover area is not required at the same time as the destination setting information data. Therefore, it becomes easy to form the destination setting information data on a separate disk (CD-ROM), and normally such a configuration is adopted.

By the way, there exists a situation in which more detailed map data is requested on the one hand and more detailed additional information is requested on the other hand. On the other hand, the capacity of the disk is finite. Therefore, in such a situation, it can be considered that the capacity of one disk is insufficient. However, as in this embodiment ,
If the normal map data is not used when setting the destination, the map data and the facility data as an example of the destination setting can be expanded on separate disks. And
According to the first embodiment, each disk can be optimally configured according to the purpose.

Specifically, since the facility data storage disk having the configuration of the second embodiment described below becomes easy to use, the operation speed is improved by continuously reading the required amount of facility data from the disk. . Also, in response to the access to separate disks for map data and facility data, the CD-ROM drive 3
0 is a changer type and a normal single-playback type, and a message and a screen content prompting the insertion and replacement of the CD-ROM are also varied.

[Second Embodiment] A CD-ROM (disk) according to a second embodiment of the present invention
In contrast to the conventional CD-ROM, that is, the main body portion of a large amount of facility data apart from a small amount of table data, the operation of the navigation device described above is different from the one that is sequentially stored for each cell by giving priority to the suppression of the data amount. In order to improve the speed, the following structure in which data is duplicated is intentionally adopted.

First, basically, a CD-RO for setting a destination
The facility data stored in M is divided into cells each having a predetermined latitude width and longitude width corresponding to the display range, like the map data stored in a general map data recording CD-ROM. That is, for example, the area to be covered, which is the whole of Japan, is divided into reference areas called cells, and the data is summarized with reference to the cells. A number for identification is assigned to each cell. For example, the total number of cells is 8 bits (0 to 25
If it is identified by the number of 5), the area to be covered is divided into cells within 256.

Next, the destination setting CD-ROM is composed of a main body of facility data and a table of contents data. Note that the table of contents data is located in the upper hierarchy of the facility data body, and stores identification data indicating the latitude and longitude of the cell area that each unit is responsible for, the number of each cell, and the body portion of the facility data corresponding to each cell. The data amount is small.

On the other hand, in the main part of the facility data, access is made in units of cells, but the data of each cell is constructed in units of a certain range of areas including the corresponding cells, and the type of facility and the type of facility are , Name, position on latitude and longitude, detailed information, etc. are included, and the amount of data is large.

Specifically, it is a CD-ROM that stores facility data for selecting a destination by the navigation device using cells having predetermined latitude and longitude widths corresponding to the display range as access criteria. The facility data corresponding to the four cells is stored by storing the facility data corresponding to the four cells in which the latitude width and the longitude width enter the area where the latitude width and the longitude width are twice the predetermined latitude width and the longitude width around the cell to be read. The navigation device is configured to be continuously readable.

Explaining with reference to FIG. 4, the latitude width is 2x and the longitude width is 2y centered on the corresponding cell of the latitude width x and the longitude width y.
The facility data for the area equivalent to 4 cells (the range indicated by the thick broken line in FIG. 4) that falls within the area (1) is collected and continuously stored. The same applies to other cells. As a result, the amount of data increases four times due to data duplication, while facility data for four cells can be read continuously with one access. For example, by accessing the cell (3, 3), the facility data of the thick wavy line can be continuously obtained. In this configuration, since the corresponding cell to which the vehicle position belongs and the read range corresponding to four cells are directly associated with each other, the read address determination procedure in the navigation device is simple.

[0040]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A specific configuration of an embodiment of the navigation device of the present invention, which is considered to be the best, will be described with reference to the drawings. FIG. 1 shows the overall system configuration of a car navigation device, and FIG. 2 is a flowchart showing the processing procedure for destination setting. This car navigation system uses the above-mentioned destination setting CD-ROM for selecting and setting destinations, and so on, but the destination setting means is different from the conventional one, but other components are conventional. Since they are the same as the above, they are indicated by the same reference numerals, and the re-explanation thereof will be omitted.

Since the destination setting program 820 displays the facilities around the current position (x, y), it stores the designated point in the storage area 73 as the destination (x ', y'). However, unlike the conventional destination setting program 82, the following processing is performed.

First, in step S1, the position detection program 62 is called. Then, although not described again, the latitude / longitude information corresponding to the current position (x, y) of the moving body, the traveling direction of the current location, and the like can be obtained as described above. As a result, this car navigation device performs processing for detecting the current position of the moving body.

Next, in step S2, the address of the corresponding cell to which the current location belongs is calculated. Specifically, as described above, since each cell is equally divided by latitude and longitude of a certain width, while calculating the cell number from the current position (x, y), the contents of the CD-ROM Read the data. Then, the table of contents data is searched for the address of the facility data for the read range including the corresponding cell. Further, in step S3, the facility data stored at this address is read from the CD-ROM. Then, the facility data 83 in the RAM 14 is used. Through the processing in these steps S2 and S3, this car navigation device performs processing for reading the facility data of the facility within the display range based on the detected position from the recording medium called CD-ROM and making it accessible. Has become.

In subsequent step S4, the detailed information contained in the facility data 83, specifically, the longitude difference and the latitude difference between the absolute position information of each facility based on the longitude and latitude and the longitude and latitude information of the current position are obtained. . Further, based on the fact that the GPS azimuth (absolute azimuth) output from the GPS receiver is the data indicating the traveling direction of the moving body, the display of each facility for taking the traveling direction of the moving body upward on the display screen. Position conversion is also performed. As a result, this car navigation device calculates the relative position from the current position, that is, the detected position, for each facility in the facility data read from the CD-ROM.

In the next step S5, the facility type to be displayed is narrowed down by limiting the facility type to a hotel or the like according to an instruction or the like by operating the remote controller 20. Then, in a succeeding step S6, the pictograms and the like of only the selected facilities are displayed. As a result, the car navigation device displays only the facilities within the set range around the current position of the vehicle based on the relative position calculated in step S4 and the detected position. In step S6, the screen is cleared before the pictograms are displayed, and at least the map display unit is rewritten when the facility is displayed.

Next, when it is determined in step S7 that a change instruction by operating the remote controller 20 has been received, the process proceeds to step S8, and the distance from the current position is changed as a center to be displayed locally. Narrow down or expand the facilities of. After this change, the process proceeds to step S5 or S6 for redisplay. As a result, this car navigation device changes the setting range according to the instruction.

When it is determined in step S9 that the selection instruction by operating the remote controller 20 has been received, the process proceeds to step S10, the position of this selected one facility is obtained, and this is stored in the storage area 73. To update the value of the destination (x ', y'). As a result, this car navigation system is
One of them can be selected, and the position of the selected facility is set as the destination.

Further, when it is determined in step S11 that the guidance instruction is received, in step S12, the destination (x ', y') is updated to determine whether or not the destination has been determined. Only in the case, the process proceeds to step S13. Then, the destination guidance program 72 is called. Then, the destination guidance program 72 also calls the monitor display program 42 to perform route guidance / guidance, display of map data, and the like. As a result, this car navigation device, after the destination is set, displays a map based on the detected position and guides or guides the route to the destination according to the instruction. It has become a thing.

The specific operation of the navigation system of this embodiment will be described with reference to the drawings. FIG. 3 shows an example of a screen during the operation.

First, the user uses the CD-ROM drive 30 of this car navigation system to set a CD for destination setting.
-After loading the ROM, operate the remote controller 20 to give a destination setting instruction to this device.

Then, in response to this instruction, the car navigation system performs the processes of steps S1 to S6 of the destination setting program 820 to determine the current position and the position of each facility in the set range near the current position. A chart screen showing the relationship is displayed (see FIG. 3A). At this time, the map is not displayed. Further, the range setting can be changed by the user by the processing of steps S7 and S8 of the destination setting program 820 (FIG. 3).
In (a), a radius within 10 km from the current location is selected). Further, by the processing of steps S9 and S10 of the destination setting program 820, any one of the displayed facilities can be selected for later detailed information display. This selection can be made, for example, in the order of the vicinity of the present location by a sending instruction. Moreover, the name of the selected facility is displayed at the top of the screen (in the figure, Shikanoshima National Holiday Village). The display direction is a head-up display with respect to the traveling direction of the moving body.

When the list display is instructed,
The distance to each facility and the facility name in the chart are displayed in a list by the processing in step S7 and the like (see FIG. 3B). Also in this case, the selected facilities are displayed in an identifiable manner (Shiga-no-shima National Holiday Village in the figure).
Also, in the list display, the selected facilities can be sequentially advanced.

When a detailed screen display instruction is issued,
Detailed information for each facility selected as the display facility is displayed (see FIG. 3C). The detailed information indicates the characteristics of each facility and is recorded in advance in the CD-ROM corresponding to each facility.

In this state, when the confirmation map is instructed to be displayed, the confirmation map in the predetermined range around the facility displayed on the detailed screen is displayed (see FIG. 3 (d)). It should be noted that this is merely a sketch as a part of the detailed information, and the present location of the mobile body is not reflected on this confirmation map. This confirmation map data is also recorded in advance in the CD-ROM for setting the destination corresponding to each facility.

When a selection instruction for destination setting is issued, step S9 of the destination setting program 820 is executed.
By this, the process of confirming the selected facility as the destination is started. If another destination has already been set, after confirming whether or not the destination can be updated (cleared), whether or not the destination can be set is accepted, while another destination has not been set. Determines whether to set a destination (see FIG. 3E).

On the other hand, when the final confirmation of the destination setting is instructed, the position of the selected facility is stored in the storage area 73 as the destination (x ', y') in step S10 of the destination setting program 820. Be registered with.

When the destination setting is completed in this way, normally, a route guidance start instruction is subsequently issued. Then, based on step S13 of the destination setting program 820,
A map around the current location of the vehicle is displayed, and guidance to the set destination facility begins. Then, for the first time, the destination, the map information, and the current position are linked by referring to the storage areas 63 and 73. In this way, by using the latitude / longitude information of the destination stored in the storage area 73 in the device when the CD-ROM in which the map data for performing route guidance is stored is loaded next, Information on the CD-ROM can be easily linked. Note that the above
In the example, the car navigation device is taken as an example for explanation.
However, as is clear from the above description, the “movement” of the present invention is
The "body" is not limited to a vehicle, but may be a pedestrian.
Includes navigation devices applied to other "moving objects"
It is a thing.

[0058]

As is apparent from the above description, the present invention
In the navigation device of the above, since it is possible to display the positional relationship between the current position and each facility without using a map, and to configure the facility selected from the displayed facilities as the destination, A destination near the current location can be set on a screen that is easy for the user to see. Moreover, since the range to be displayed can be set arbitrarily, unnecessary facilities are not displayed, and the display becomes easier to see. Therefore, there is an advantageous effect that the display at the time of selecting and setting the destination can be made easy to see.

Further, in the navigation device of the present invention , the display number of the selection candidate facilities can be narrowed down by changing the setting range. Therefore, there is an advantageous effect that the display at the time of selecting and setting the destination can be made easier to see.

Furthermore, in the navigation device of the present invention , it is possible to perform route guidance and the like by displaying a map at any time after setting the destination. Therefore, there is an advantageous effect that the display at the time of selecting and setting the destination can be made easy to see and the route guidance to the set destination can be immediately continued.

[0061]

[Brief description of drawings]

FIG. 1 is an overall block diagram of a car navigation device as an embodiment of the present invention.

FIG. 2 is a flowchart of the destination setting process.

FIG. 3 is an example of a display screen when the destination is set.

FIG. 4 is a schematic diagram for explaining the structure of the CD-ROM of the present invention.

FIG. 5 is an overall block diagram of a conventional car navigation device.

[Explanation of symbols]

10 Car navigation system body 11 CPU 12 bus lines 13 ROM 14 RAM 20 remote controller 21 Input circuit 22 Input processing program 30 CD-ROM drive 31 CD-ROM controller 33 map data 40 monitors 41a dual port RAM 41 Drawing processing circuit 42 Monitor display program 50 speakers 51 speaker drive circuit 60 GPS antenna 61 GPS receiver circuit 62 Position detection program 63 current location storage area 72 Destination Guidance Program 73 Destination storage area 82 Destination Setting Program 83 Facility data 820 Destination Setting Program

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Toshie Takahashi 1-7-1, Shimomeguro, Meguro-ku, Tokyo Increment P Co., Ltd. (72) Inventor Takeharu Arakawa 25 Nishimachi, Yamada, Kawagoe, Saitama Prefecture 1 Pioneer Co., Ltd. Kawagoe factory (56) Reference JP-A-6-307878 (JP, A) JP-A-4-123088 (JP, A) JP-A-62-151881 (JP, A) JP-A-8- 184455 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) G01C 21/00 G08G 1/0969 G09B 29/10

Claims (5)

(57) [Claims] 1. A position detecting means for detecting the current position of a moving body, a map display means for displaying a map based on the current position detected by this means, and a route guidance or route from the current position to a destination. A navigation device comprising guidance means for providing guidance, comprising: destination setting means, and a recording medium in which map data displayed by the map display means and destination setting information data are recorded. Setting means, means for narrowing down destinations from the information data in relation to the current position; and hiding the map display by the map display means, for the narrowed down destinations, the current position and destinations The destination display means for displaying the destination selection screen showing the positional relationship of the, and one selected from the destinations displayed by the destination display means are set. Navigation apparatus characterized by comprising a destination determining means for determining a destination can. 2. The destination setting means reads the information data relating to a destination falling within a predetermined range with the current position as a reference from the recording medium, and each destination from the information data read by the means. Means for calculating absolute position information of the ground and calculating a relative position from the current position for each destination, narrowing down the destinations within the setting range around the current position by the relative position, and the destination The navigation device according to claim 1, wherein a positional relationship between the current position and each destination on the selection screen is obtained. 3. The navigation device according to claim 2, further comprising range changing means for changing the set range according to an instruction. 4. After the destination is set by the destination confirming means, the map display means is caused to display a map based on the current position, and the destination is set to the guiding means. 4. The navigation device according to claim 1, further comprising means for performing route guidance or route guidance. 5. A position detecting means for detecting a current position of a moving body, a map display means for displaying a map based on the current position detected by this means, and a route guidance or route from the current position to a destination. In a destination setting method of a navigation device, which comprises a guide means for guiding and includes a recording medium on which information data of destination setting is recorded, the method relating to a destination within a predetermined range based on the current position, A procedure of reading information data from the recording medium, a procedure of obtaining absolute position information of each destination from the information data read by the procedure, and calculating a relative position of each destination from the current position; The procedure of narrowing down the destinations that fall within the setting range around the position from the relative position, and the map display by the map display means are hidden, A procedure of displaying a selection screen showing a positional relationship between the current position and each destination with respect to the narrowed-down destination based on the relative position; and one selected from the destinations displayed by the procedure, A destination setting method for a navigation device, comprising: determining a destination to be set.