JP3193234B2 - 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 device which is mounted on a moving body such as a car or a ship, detects the current position of the moving body using radio navigation means, and displays a map showing the current position. It is.

[0002]

2. Description of the Related Art FIG.
FIG. 1 is a configuration diagram showing a conventional navigation device disclosed in Japanese Patent Application Publication No. H10-207, in which reference numeral 1 denotes an antenna (receiving means) for receiving a radio wave (positioning data) indicating the current position of a moving object transmitted from an artificial satellite; Monitors the reception state of the antenna 1 and, when the antenna 1 receives the positioning data, the current position (latitude and longitude) of the moving object based on the positioning data.
Is a GPS receiver (current position detecting means) that outputs information indicating that positioning is not possible when the antenna 1 cannot receive positioning data.

[0003] Reference numeral 3 denotes a calculation board for retrieving a map including the current position detected by the GPS receiver 2 and calculating a display position of the current position on the map. Display for displaying altitude, remaining distance to destination, number of route guide entered by user, map number including current position (map page), moving direction of moving object and direction of destination, 5 is arithmetic board When the map retrieved by 3 is addressed, the light emitting units 6 and 7 emit light to display the current position of the moving object. Atlas gauges 6 and 7 display the map on the atlas gauge 5 when the map is addressed. A light-emitting unit that is mounted to be located on the outer periphery and emits light-emitting diodes corresponding to the current position of the moving object. Reference numeral 8 denotes a place having a map addressed to the atlas gauge 5. Book, 9 is a remote control to enter the destination of the moving body. FIGS. 22 and 23 are flowcharts showing the processing procedure of the navigation device.

Next, the operation will be described. First, when the power is turned on, an initialization process is performed (step ST
1) The positioning data transmitted from the satellite is transmitted to the antenna 1
The GPS receiver 2 monitors whether or not GPS has been received, and when the antenna 1 receives the positioning data, the GPS receiver 2 detects the current position (latitude and longitude) of the moving object based on the positioning data. Then, the operation board 3 searches the map including the current position and calculates the display position of the current position on the map (steps ST2, ST4). On the other hand, antenna 1
Does not receive the positioning data, the GPS receiver 2 outputs information indicating that positioning is impossible (steps ST2 and ST5).

[0005] The operation board 3 is a GPS receiver 2
It is monitored whether or not the information indicating that the positioning is impossible is output from the device, and if the information indicating that the positioning is not output is not output (steps ST6 and ST10), when the information is output. The timer to be started is reset (step ST11), a map number including the current position is displayed on the display 4, and the operator sends the searched map to the atlas gauge 5 as described above.
The light emitting diodes corresponding to the current position of the moving object are caused to emit light by the light emitting units 6 and 7 (step ST12). Then, by turning on a predetermined lamp on the display 4, it is displayed that the reception state of the antenna 1 is good (step ST13).

On the other hand, if information indicating that positioning is not possible is output from the GPS receiver 2, it is determined that positioning data cannot be received because the mobile enters a tunnel or the like. (Step ST10), a timer is started (Step ST14). However, if the timer has already started, the operation of the timer is continued.

[0007] The arithmetic board 3 reads the time of the timer to measure the time that has elapsed since the positioning was disabled, and determines whether or not three minutes have elapsed (step ST15). If the elapsed time does not exceed 3 minutes, the current position, the map number, and the like of the moving object are displayed on the display 4 and the atlas gauge 5 based on the positioning data immediately before the positioning becomes impossible (step ST).
16). That is, the display 4 until just before the positioning becomes impossible.
The content displayed on the atlas gauge 5 is continuously displayed as it is. However, the lamp on the display 4 is switched to a blinking display to display that the reception state of the antenna 1 is defective (step ST17).

If the elapsed time has passed three minutes, the display on the display 4 and the atlas gauge 5 are turned off, and the provision of information on the moving body is stopped (step ST1).
8) Only the reception state of the antenna 1 is displayed by the lamp of the display 4 (step ST19).

[0009] In addition to the above-described conventional example, if the mobile unit enters a tunnel or the like and cannot receive the positioning data, positioning becomes impossible until reception becomes possible. A technique for continuously displaying the immediately preceding current position and the like is disclosed in Japanese Utility Model Laid-Open No. 5-69624.

[0010]

Since the conventional navigation device is configured as described above, if positioning data cannot be received due to a moving body entering a tunnel or the like, a predetermined time has elapsed since the positioning data could not be received. , The current position just before positioning is disabled is still displayed,
Because the actual current location of the moving object is not displayed,
In the meantime, if the moving object progresses, it becomes difficult to grasp the current position of the moving object, especially when the moving object deviates from the display area of the map displayed immediately before positioning becomes impossible There was a problem that the current position of the moving object could not be grasped at all.

[0011] Further, since the current position and the like immediately before the positioning becomes impossible are only displayed continuously, the operator cannot grasp the distance and time traveled by the moving body after the positioning became impossible. There is also a problem that it is not possible to predict how long it will take to recover positioning data reception.

[0012] The invention of claim 1 has been made to solve the above problems, if what extent running after
When predicting whether positioning data reception will recover, the operator
An object of the present invention is to provide a navigation device that can easily grasp information to be provided .

[0013] According to a second aspect of the present invention, the location of the moving object is clarified.
You can know exactly and how much more you need to travel
An object of the present invention is to provide a navigation device that allows an operator to easily predict whether data reception will be restored .

According to the third and fourth aspects of the present invention, there is provided a navigation device which can easily grasp information to be provided to an operator when predicting how long the vehicle should travel to recover the reception of the positioning data. The purpose is to gain.

[0015]

According to a first aspect of the present invention, there is provided a navigation device which is operated by a map information search unit.
The moving distance of the moving object is expressed stepwise .

According to a second aspect of the present invention, there is provided the navigation device, wherein the moving distance of the moving object calculated by the map information searching means is provided.
A circle indicating separation is displayed on a map.

The navigation device according to the third aspect of the present invention outputs information indicating that positioning is impossible from the current position detecting means.
The time that has passed since the
Measure and display the elapsed time step by step.
In which it was to be current.

According to a fourth aspect of the present invention, the navigation device expresses the moving distance or the degree of elapsed time stepwise.
The color of the map or the mark indicating the current location
The display mode of the mark indicating the position is changed .

[0019]

[Action] The navigation apparatus in the invention of claim 1, the moving distance of the moving object calculated by the map information retrieval means
Display means to express the degree of separation in stages
The mobile device used by the operator to predict the reception recovery
You will be able to intuitively grasp the moving distance.

According to a second aspect of the present invention, there is provided the navigation apparatus, wherein the movement of the moving object calculated by the map information searching means is performed.
Display means for displaying a circle indicating the distance on a map is provided
This allows the current position of the moving object to be clearly understood.
And how much more driving you will receive positioning data
You will be able to predict if you will recover.

According to a third aspect of the present invention, in the navigation device , information indicating that positioning is impossible is received from the current position detecting means.
If output, time elapsed since positioning was disabled
Information retrieval means for measuring the time and the degree of the elapsed time
Display means for displaying
Sensitive elapsed time used by the author to predict recovery
Will be able to understand.

According to the fourth aspect of the present invention, the navigation device expresses the moving distance or the degree of the elapsed time stepwise.
The color of the map or the mark indicating the current location
Display means for changing the display mode of the mark indicating the position is provided.
As a result, the mobile
It becomes possible to grasp the moving distance or the elapsed time.

[0023]

[Embodiment 1] An embodiment of the present invention will be described below with reference to the drawings. FIG.
FIG. 1 is a configuration diagram showing a navigation device according to an embodiment of the present invention. In the figure, the same reference numerals as those in the related art denote the same or corresponding parts, and a description thereof will be omitted.

Reference numeral 11 denotes a GPS receiver (current position detecting means)
When the current position of the moving object is detected by the GPS receiver 2, map information around the current position is searched, and when information indicating that positioning is impossible is output from the GPS receiver 2, the information is output. Map information search means for calculating the moving distance of the moving object based on the time; 12, map data storage means for storing map data; 13, scale setting means for setting the scale of the map to be displayed; 14, the GPS receiver 2 When information indicating that positioning is not possible is output from the mobile device, moving distance calculating means 15 calculates the moving distance of the moving object based on the time when the information is output. When the position is detected, map information around the current position is searched from the map data storage means 12, and when information indicating that positioning is impossible is output from the GPS receiver 2, the information is sent to the moving distance calculation means 14. To a system control means for calculating a moving distance of the moving body.

Reference numeral 16 denotes a map displaying the current position of the moving object on the information display means 18 based on the map information searched by the map information search means 11, and a map calculated by the map information search means 11. A display means for reducing the scale of the map as the moving distance of the body increases, a scale control means 17 for controlling the scale of the map to be displayed, and an information display means 18 for displaying a map showing the current position of the moving body. is there.

Further, FIG. 2 is a hardware configuration diagram showing the hardware configuration of the navigation device of FIG. 1, reference numeral 1 and the same reference numerals are hardware that corresponds to the unit of Figure 1. That is, the map data storage means 12 stores the CD
The ROM, the scale setting means 13 are input keys (however, the input keys are not limited to the map scale and can input various information such as the destination of the moving body); the moving distance calculating means 14 is a distance sensor; The display means 18 corresponds to the liquid crystal display, the moving distance calculation means 14, the system control means 15, and the scale control means 17 correspond to the control unit 20, respectively. The control unit 20 is a CPU 2
1, a ROM 22, a RAM 23, a display control unit 24 for controlling the liquid crystal display 18, and an I / O for performing input / output with the outside.
O25.

[0027] Next, the operation will be described. FIGS. 3 to 5 are flowcharts showing the processing procedure of the navigation device according to the first embodiment. First, when the power is turned on at the start of operation, initialization processing of the GPS receiver 2, the driver of the CD-ROM 12, the liquid crystal display 18, and the control unit 20 is performed (step ST31).

When the initialization process is completed, the control unit 20 inputs data indicating the current position of the moving object detected by the GPS receiver 2 (step ST).
32) If the antenna 1 cannot receive the positioning data, the GPS receiver 2 outputs information indicating that the positioning data could not be received instead of the data indicating the current position of the moving object. Based on the presence or absence of such information, it is determined whether or not the antenna 1 is in a state capable of receiving positioning data (step ST41).

When it is determined that the mobile terminal can be received, the positioning flag is set to "1" (step ST42). Since the positioning is possible at present, the moving distance of the moving body when the positioning is impossible is performed. Reset D "
0 ”. Here, the positioning flag is the antenna 1
Is a flag indicating whether or not it is in a receivable state, and is set to "1" if it is in a receivable state, and is set to "0" if it is not. When the moving distance D is reset, data indicating the current position detected this time by the GPS receiver 2 is set as final positioning data E and current position data N (steps ST44 and ST4).
5).

On the other hand, if it is determined that there is no ready to receive, along with setting the positioning flag "0" (step ST46), it calculates the movement distance D of the moving object at the time of the positioning impossible (step ST47). That is, since the distance sensor 14 outputs a pulse signal each time the moving body advances a predetermined distance (approximately 39.25 cm), the control unit 20 integrates the pulse signal from the point in time when positioning becomes impossible, thereby obtaining the moving distance D. (For example, assuming that the number of pulse signals is 200, the moving distance D is about 78.5 m (39.25 × 200/100 = 78.5)
m)).

After calculating the moving distance D, the final positioning data E is set as the current position data N. That is,
Data indicating the current position immediately before the positioning becomes impossible is set as the current position data N.

When the setting of the current position data N is completed as described above, the control unit 20
Displays a map showing the current position of the moving object on the liquid crystal display 1
8 is performed (step ST33). That is,
The control unit 20 refers to the value of the positioning flag, and if the value of the positioning flag is “0” (when positioning is impossible),
As shown below, the moving distance D is different from the liquid crystal display 18.
It is determined whether the actual distance L (see FIG. 6A) corresponding to the vertical direction is larger than half (steps ST51 and ST5).
2). D> L / 2 (1)

Firstly, if the expression (1) is not satisfied, because the mobile does not deviate from the display area of the map being displayed (will be described later, the current position of immediately before the positioning inability map center Is displayed, the display area is not deviated when Expression (1) is not satisfied), and the display process on the liquid crystal display 18 is left as it is, and a series of processing is ended (step ST52). . On the other hand, if the formula (1) is satisfied, the moving object may have deviated from the display area of the displayed map, so that the current position of the moving object is set within the display area of the map. The level of the currently displayed map is set to be raised by one level (step ST53). For example, a setting is made to change the scale from 1 / 25,000 to 1 / 50,000, which is one step smaller.

[0034] Then, calculates the actual distance L in the map level after scale change (step ST54), the current position of the mobile object (current position data N) is to be in the center of the map, on map level after setting LCD map 18
(Step ST55), and a mark indicating the current position of the moving object is displayed on the map (step ST55).
56), the processing in the case where the value of the positioning flag is “0” is ended.

On the other hand, if the value of the positioning flag is "1", the current position data N, the data indicating the position where the moving object is currently present is set, the current mobile in accordance with the data If the position (current position data N) is displayed at the center of the map (step ST55), it is impossible for the moving object to deviate from the display area of the map, as in the case where the value of the positioning flag is "0". It is not determined whether or not Expression (1) holds. However, if the operator wants to change the scale of the map, he or she can do so by using the input keys 13 (step ST57).

As is clear from the above, according to the first embodiment, when positioning is impossible, it is determined whether there is a possibility that the moving object has deviated from the display area of the map, and the vehicle has deviated. If there is a possibility, as shown in FIG. 6, the scale of the map is changed so as to be gradually reduced, so that the moving object is always displayed without departing from the display area of the displayed map. Even if the positioning cannot be performed, the operator can always grasp the area where the moving object may exist.

Embodiment 2 FIG . In the first embodiment, an example in which the current position of the moving object is displayed so as to be at the center of the map in consideration of the determination result of Expression (1) has been described. The map of the direction may be displayed so as to be large (for example, if the traveling direction is directly above the map, the position of the moving object is displayed at a position lower than the center of the map), and the same as in the first embodiment. The effect is obtained.

Embodiment 3 FIG . In the first embodiment, the case where the current position of the moving object is detected using the GPS receiver 2 has been described. However, the present invention is not limited to this as long as the current position of the moving object can be detected. May be used to detect the current position of the moving object.

Embodiment 4 FIG . FIG. 7 is a configuration diagram showing a navigation device according to an embodiment of the present invention. In the figure, when reducing the scale of the map, reference numeral 31 denotes a display frame indicating a display area of the map before the reduction in scale. A display means 32 for displaying the map on a reduced scale is a display frame control means for controlling the display of the display frame based on the determination result of the equation (1).

[0040] Next, the operation will be described. 8 and 9 are flowcharts showing the processing procedure of the navigation device according to the fourth embodiment. When reducing the scale of the map, processes other than the process of displaying the display frame indicating the display area of the map before the reduction in scale on the reduced scale map (steps ST61, ST71 to ST73) are the same as those described above. The description is omitted because it is similar to the first embodiment.

When a map showing the current position of the moving object is displayed on the liquid crystal display 18 in the same manner as in the first embodiment,
Display frame control means 32 in control unit 20
Determines whether the value of the positioning flag is "0" and the equation (1) is satisfied in order to determine whether the scale of the map has been reduced (steps ST71 and ST72).

When such a condition is satisfied, for example, if FIG. 10A is a map before the reduced scale and FIG. 10B is a map after the reduced scale, The display frame of the dotted line displayed on the map of FIG. 10B is displayed so as to exactly match the display frame of the map of FIG. 10A (step ST73). Note that FIG.
FIG. 10C is a map when the scale is further reduced by one step, and the display frame of the map of FIG. 10A is also displayed on the map of FIG.

[0043] Thus, according to this fourth embodiment, since the map of the relationship between the previous map and after the scale scale become clear, when changing reduced scale of the map, a possibility that the moving body is present There is an effect that it is possible to continue to grasp the position where the moving object is likely to exist without losing the position where the moving object is considered to be high.

Embodiment 5 FIG . FIG. 11 is a block diagram showing a navigation device according to an embodiment of the present invention. In the drawing, reference numeral 33 denotes a display means for displaying a circle indicating the moving distance of the moving object calculated by the map information search means 11 on a map; Numeral 34 denotes a circle display control means for controlling the display of a circle.

[0045] Next, the operation will be described. By the way, FIG.
FIG. 13 is a flowchart showing a processing procedure of the navigation device of the fifth embodiment. Processing for displaying a circle indicating the moving distance of the moving body calculated by the map information search means 11 on a map (steps ST81, ST91 to ST9).
Processes other than 7) are the same as those in the first embodiment, and a description thereof will be omitted.

When a map indicating the current position of the moving object is displayed on the liquid crystal display 18 in the same manner as in the first embodiment,
Circle display control means 34 in control unit 20
Is to determine whether or not it is currently in a positioning impossible state,
It is determined whether the value of the positioning flag is “0” (step ST91). If the value of the positioning flag is not “0”, positioning data indicating the current position of the moving object is obtained, so that a circle indicating the moving distance of the moving object need not be displayed on the map. Since the position can be known, the unit movement distance D _C (data indicating the distance moved by the moving body after displaying the circle indicating the previous movement distance) is reset to 0 (step ST97), and the processing for displaying the circle is performed. finish.
If a circle is already displayed, the display of the circle is deleted.

[0047] On the other hand, if the value of the positioning flag is "0", based on the scale of the map currently being displayed, and calculates the actual distance S unit scale (step ST92). Here, in the meaning of the unit scale, for example, when a setting is made to display a circle when the moving body advances 1 cm on the map, the distance (scale) of 1 cm is the unit scale. Therefore, if the unit scale is 1 cm and the scale is 1 / 50,000, the actual distance S is 500 m.

When the actual distance S is calculated, the unit movement distance D _C is calculated in the same manner as the movement distance D,
Is calculated by integrating the pulse signals output from the step (step ST93). Then, compare the actual distance S and the unit moving distance D _C, determines whether the moving body is moved by the actual distance S from displaying the last circle or from when the positioning impossible state (step ST94). D _C ≧ S (2)

When the equation (2) holds, the moving body has moved more than the actual distance S.
A circle indicating the moving distance is newly displayed on the map (step ST95). For example, in the case of FIG. 14A, since the unit scale is set to 1 cm, the moving object is displayed on the map at 1 cm.
A circle is displayed on the map every time the user moves by cm. Incidentally, since three circles are displayed, the moving object is currently located on the circumference of the third circle (the outermost circle) (even if the scale is 1 / 50,000). If the mobile is 1500
m).

[0050] When displaying a circle on a map, the unit travel distance D _C is reset to 0 (step ST96),
The process ends.

[0051] Thus, according to this fifth embodiment, since the circles indicating the moving distance of the moving body and be displayed on the map, together with so clearly grasp the current position of the moving body, Atodono If the vehicle travels a certain distance, it is possible to recognize whether or not the vehicle can pass through a tunnel or the like. Therefore, it is possible to easily predict a time when the reception of the positioning data is recovered.

Embodiment 6 FIG . In the fifth embodiment, the case where the unit scale is 1 cm is described. However, the present invention is not limited to this.
It may be 0.5 cm or 2 cm. Therefore, the unit scale may be appropriately set with the input key 13 based on the scale of the map or the like. Note that the smaller the unit scale, the higher the accuracy of indicating the existence position, but if the unit scale is too small, it becomes difficult to see the map, so it is preferable to set the unit scale according to the situation.

Embodiment 7 FIG . In the fifth embodiment, the display frame control means 3 in the fourth embodiment
Although the display provided with the circle display control means 34 instead of 2 is shown, both the display frame control means 32 and the circle display control means 34 may be separately provided, and the same effects as those of the fourth and fifth embodiments are provided. Is obtained.

Embodiment 8 FIG . FIG. 15 is a block diagram showing a navigation apparatus according to one embodiment of the present invention. In the figure, reference numeral 35 denotes a display means for displaying the degree of the moving distance of the moving object calculated by the map information search means 11 in a stepwise manner; Is a map display changing means for changing the display color (color tone) of the map when expressing the degree of the moving distance stepwise.

[0055] Next, the operation will be described. FIG. 16
And FIG. 17 is a flowchart showing the processing procedure of the navigation device of the eighth embodiment. The processing for changing the color tone of the map (steps ST101, ST11 to ST11)
Processes other than 6) are the same as those in the first embodiment, and a description thereof will not be repeated.

When the actual distance L at the map level after the scale change is calculated in the same manner as in the first embodiment (step S
T54), the map display changing means 36 in the control unit 20 determines the magnitude of the moving distance D (unit: km) of the moving body that has moved since the positioning was disabled (step ST111). Then, the color tone of the map is determined according to the size, and the current position (current position data N) of the moving object is determined.
Is displayed at the center of the map (step ST
112-116). In this example, when the moving distance D is 3, the map is displayed in the third color tone. As described above, when positioning is possible, the value of the movement distance D is 0.

[0057] Thus, according to this embodiment 8, as a result of operator so the moving distance of the moving body can be grasped intuitively used to predict the received recovery immediately without staring the display content There is an effect that the moving distance of the moving body can be grasped.

Embodiment 9 FIG . In the eighth embodiment, the map color tone is changed. However, the display color and shape of the mark indicating the current position may be changed, and the lighting method of the mark (whether blinking) is changed. Thus, the same effect as in the eighth embodiment can be obtained.

Embodiment 10 FIG . FIG. 18 is a block diagram showing a navigation device according to one embodiment of the present invention. In the figure, reference numeral 37 denotes a state where the positioning is disabled when information indicating that positioning is impossible is output from the current position detecting means 2. A positioning impossible time measuring means (map information retrieving means) for measuring the measured time; 38, a display means for displaying the degree of the elapsed time measured by the positioning impossible time measuring means 37 in a stepwise manner; Time display changing means for changing the display color of the mark indicating the current position and the lighting method (presence or absence of blinking) in accordance therewith.

[0060] Next, the operation will be described. FIG. 19
FIG. 20 is a flowchart showing a processing procedure of the navigation device according to the tenth embodiment. The process of changing the display color of the mark indicating the current position (step ST12)
Processes other than (1, 131 to 138) are the same as those in the first embodiment, and a description thereof will be omitted.

In the same manner as in the first embodiment, the current position (current position data N) of the moving object is displayed on the liquid crystal display 18 so as to be located at the center of the map (step ST5).
5), the time display changing means 39 in the control unit 20 determines the length of time T that has elapsed since the positioning was disabled (step ST133). However, the time T (unit minute) that has elapsed since the positioning was disabled is determined by the positioning disabled time measuring means 37 in the control unit 20.
Measures based on the time point when the information output from the GPS receiver 2 indicating that positioning is impossible is obtained (step S
T131, 132).

The time display changing means 39 determines the display color of the mark indicating the current position and the lighting method (presence or absence of blinking) according to the length of the elapsed time T, and displays it (steps ST134 to ST138). ). For example, when the elapsed time T is 7, the display color of the mark indicating the current position is set to yellow-green and blinks.

[0063] Thus, according to this embodiment 10, as a result of the operator comes to the elapsed time can sensuously grasp used for predicting the receiving recovery, the elapsed time immediately without staring the display content There is an effect that can be grasped.

Embodiment 11 FIG . In the tenth embodiment, the display color and the lighting method (presence / absence of blinking) of the mark indicating the current position are changed. However, the shape of the mark indicating the current position is changed or the color tone of the map is changed. In this case, the same effect as in the tenth embodiment can be obtained.

[0065]

As described above, according to the first aspect of the present invention, the moving distance of the moving object calculated by the map information searching means is obtained.
Because the degree of separation is configured to be expressed in stages,
And how the reception of the positioning data if the extent traveling is restored
When making predictions, the operator can easily grasp the information used for prediction.
There is an effect that can be made .

[0066] According to the invention of claim 2, the map information retrieval hand
A circle indicating the moving distance of the moving object calculated by the step is displayed on the map
The location of the moving object.
You can know exactly and how much more you need to travel
Operator can easily predict whether data reception will be restored
effective.

[0067] According to the invention of claim 3, the current position detected hand
If information indicating that positioning is not possible is output from the
Measure the time that has passed since
It is structured to express the degree of the elapsed time step by step.
Therefore, how much time must elapse before receiving positioning data
Manipulate the information used for prediction when predicting whether the communication will recover
This has the effect that the user can easily understand.

[0068] According to the invention of claim 4, the moving distance or through
When expressing the degree of overtime step by step, map or current position
Display color of mark indicating location or display of mark indicating current position
Since the configuration is changed so that the operator can
The moving distance or elapsed time of the moving object used to predict the return
To be able to intuitively grasp the displayed contents
Immediately grasp the moving distance or elapsed time of the moving body without doing
There is an effect that can be done.

[Brief description of the drawings]

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

FIG. 2 is a hardware configuration diagram illustrating a hardware configuration of a navigation device.

FIG. 3 is a flowchart illustrating a processing procedure of the navigation device according to the first embodiment.

FIG. 4 is a flowchart illustrating a processing procedure for inputting current position data in the navigation device according to the first embodiment.

FIG. 5 is a flowchart illustrating a processing procedure for displaying a map in the navigation device according to the first embodiment.

FIG. 6 is a screen diagram illustrating an example of a screen displayed by the navigation device according to the first embodiment.

FIG. 7 is a configuration diagram showing a navigation device according to an embodiment of the present invention.

FIG. 8 is a flowchart illustrating a processing procedure of the navigation device according to the fourth embodiment.

FIG. 9 is a flowchart illustrating a processing procedure for displaying a display frame in the navigation device according to the fourth embodiment.

FIG. 10 is a screen diagram illustrating an example of a screen displayed by the navigation device according to the fourth embodiment.

FIG. 11 is a configuration diagram showing a navigation device according to an embodiment of the present invention.

FIG. 12 is a flowchart illustrating a processing procedure of the navigation device according to the fifth embodiment.

FIG. 13 is a flowchart illustrating a processing procedure for displaying a circle indicating a moving distance in the navigation device according to the fifth embodiment.

FIG. 14 is a screen diagram illustrating an example of a screen displayed by the navigation device according to the fifth embodiment.

FIG. 15 is a configuration diagram showing a navigation device according to an embodiment of the present invention.

FIG. 16 is a flowchart illustrating a processing procedure of the navigation device according to the eighth embodiment.

FIG. 17 is a flowchart illustrating a processing procedure for displaying a map in the navigation device according to the eighth embodiment.

FIG. 18 is a configuration diagram showing a navigation device according to an embodiment of the present invention.

FIG. 19 is a flowchart illustrating a processing procedure of the navigation device according to the tenth embodiment.

FIG. 20 is a flowchart illustrating a processing procedure for displaying a map in the navigation device according to the tenth embodiment.

FIG. 21 is a configuration diagram showing a conventional navigation device.

FIG. 22 is a flowchart showing a processing procedure of a conventional navigation device.

FIG. 23 is a flowchart showing a processing procedure for displaying a map in a conventional navigation device.

[Explanation of symbols]

1 receiving means, 2 current position detecting means, 11 map information searching means, 16, 31, 33, 35, 38 displaying means.

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Masako Ota 2-33, Miwa, Mita City Mitsubishi Electric Corporation Mita Works (72) Inventor Kazuhiro Yokouchi 2-33, Miwa, Mita City Mitsubishi Electric Corporation (56) References JP-A-4-110787 (JP, A) JP-A-3-255311 (JP, A) JP-A-4-121616 (JP, A) JP-A-63-177192 (JP) JP, A) JP-A-3-264814 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G01C 21/00 G08G 1/0969 G01S 5/00-5/14 G09B 29 / 00-29/10

Claims (4)

(57) [Claims] 1. A receiving means for receiving positioning data indicating a current position of a moving body, and monitoring a receiving state of the receiving means,
When the receiving means receives the positioning data, the current position of the moving body is detected based on the positioning data. On the other hand, when the receiving means cannot receive the positioning data, it indicates that the positioning is impossible. A current position detecting means for outputting information; and, when the current position of the moving object is detected by the current position detecting means, a search is made for map information around the current position to indicate that positioning cannot be performed by the current position detecting means. When the information is output, the map information search means for calculating the moving distance of the moving object based on the time when the information is output, and the map information search means based on the map information searched by the map information search means and displays a map indicating the current position of the mobile, and display means for stepwise representation of the degree of travel of the moving body calculated by said map information retrieval means navigate Deployment apparatus. 2. The map information search means according to claim 2, wherein:
2. The navigation device according to claim 1 , wherein a circle indicating the moving distance of the moving object calculated by the following is displayed on a map. 3. The map information searching means according to claim 1, wherein
When the information that positioning is impossible is output from the output means
Measures the time that has elapsed since positioning was disabled,
The display means is measured by the map information search means.
3. The navigation device according to claim 1 , wherein the degree of the elapsed time is expressed in a stepwise manner . 4. The display means displays a moving distance or an elapsed time.
When displaying the degree of
The display color of the mark or the display style of the mark indicating the current position
The navigation device according to claim 1 , wherein the navigation device is changed.