JPH11149244A - Map display device, operation assisting device, information informing method, operation assisting method, and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To properly inform information to be required attension in traveling. SOLUTION: This is provided with a CD block 8 mounted with a map CD- ROM 7 where map data including road information having grade information are stored, a GPS antenna 1 and PS block 2 for positioning own present position and an advancing direction, and a CPU 13 by which the map data are read out based on the present position to be developed on a video RAM 20 as displayed data by a graphic controller 19, by which image information displaying an ascending slope or a descending slope in response to the slope for own advancing direction is added on the road information out of the developed display data, and by which the resultant display data is displayed by a monitor block 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a map display device, a driving assistance device, an information notification method, a driving assistance method, and a recording medium that are applied to a navigation device for an automobile.

[0002]

2. Description of the Related Art Conventionally, GPS (Global Po
2. Description of the Related Art Navigation devices for automobiles using a positioning system have been widely used. In this type of navigation device, the latitude information and the longitude information of the current position are calculated based on signals from a plurality of artificial satellites received by a GPS antenna, and the road around the current position read from a recording medium such as a CD-ROM is calculated. Map data including information and place name information is developed and displayed on a monitor display.

[0003]

However, in general, in the above-described navigation device, although road information in the map data includes intersection names and restriction information such as one-way traffic and prohibition of right / left turn, for example, It does not include other information that requires attention in driving, such as hills, places where there is a risk of falling rocks, places where the road shoulder is soft, and places where the road surface often freezes in winter, making it less convenient as a navigation device. Was.

[0004] In addition, the information that requires caution in driving as described above is that, for example, if the vehicle is traveling on a slope, the ascending and descending directions are different depending on the traveling direction. Also, there is no need to worry about places where there are many road surface freezes other than in winter, such as the fact that it is not necessary to simply display them at the corresponding positions in the map data. Must be avoided.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a map display device, a driving assistance device, and an information device capable of appropriately notifying information requiring caution in traveling. It is to provide a notification method, a driving assistance method, and a recording medium.

[0006]

According to the first aspect of the present invention,
Map data storage means for storing map data including road information having gradient information; positioning means for positioning the current position and traveling direction of the vehicle; and map data storage based on the current position obtained by the positioning means. Map data expanding means for reading map data from the means and expanding the display data as display data; gradient information in the display data expanded by the map data expanding means; It is characterized by comprising processing means for adding image information indicating a downhill, and display means for displaying display data obtained by this processing means.

With this configuration, it is possible to visually recognize that the road on which the vehicle is traveling is going uphill or downhill in accordance with the actual traveling direction. In addition, it is possible to detect in advance that the vehicle speed will decrease without notice on a long uphill road on the highway, and to avoid this situation without fail.

According to a second aspect of the present invention, there is provided a map data storing means for storing map data including road information having traffic information with limited conditions, a positioning means for positioning the current position of the vehicle, and a positioning means for the positioning means. The map data expanding means for reading out the map data from the map data storing means based on the current position obtained in step 2 and expanding the map data as display data, and the traffic information in the display data expanded by the map data expanding means matches the limiting condition. Determining means for determining whether or not the state is present;
Processing means for adding image information indicating traffic information determined to be in a state meeting the limiting condition by the determination means to corresponding road information in the display data developed by the map data development means; Display means for displaying the obtained display data.

With such a configuration, information requiring caution in traveling is displayed only under actually necessary conditions and can be visually recognized by the user in advance. The invention according to claim 3 is
Measuring means for measuring its own traveling gradient; determining means for determining whether or not its own traveling gradient obtained by the measuring means is out of a preset angle range; and uphill or downhill according to the determination result of this determining means. And a notification means for performing notification according to the slope.

With this configuration, when the vehicle is actually traveling, when the gradient exceeds a predetermined angle, this is notified by, for example, a voice message, so that the driver is reliably alerted when necessary. Can be.

According to a fourth aspect of the present invention, there is provided a storage means for storing road gradient information, and a determination for judging whether an angle indicated by the gradient information stored in the storage means is out of a preset angle range. Means, and a notifying means for performing a notification according to an uphill or downhill according to the determination result of the determining means.

With such a configuration, when the vehicle travels on a previously stored road, when the gradient exceeds a predetermined angle, this is notified by, for example, a voice message, so that the driver can be surely notified when necessary. You can call attention.

According to a fifth aspect of the present invention, in the third or fourth aspect of the present invention, a setting means for setting a condition for the self-progression, and it is determined whether or not the condition set by the setting means is satisfied. It is characterized by further comprising a judging means and a changing means for changing the preset angle according to the judgment result of the judging means.

With such a configuration, in addition to the operation of the third or fourth aspect of the present invention, the angle of the gradient for performing the notification is changed depending on whether or not the set condition exists. For example, the angle of the gradient determined to require attention is automatically changed to an appropriate value in accordance with conditions such as the season and the weather, so that the notification can always be performed at the optimal timing.

According to a sixth aspect of the present invention, the current position and the traveling direction of the vehicle are measured, and based on the measured current position and the traveling direction of the vehicle and the gradient information read from the storage medium, the vehicle moves uphill or downhill. It is characterized by reporting that it is a slope.

According to such a method, it is possible to visually recognize that the traveling road is going uphill or downhill according to the actual traveling direction. In addition, it is possible to detect in advance that the vehicle speed will decrease without noticing on a long uphill road on an expressway, and to prevent such a situation without fail.

According to a seventh aspect of the present invention, the present position is measured, and whether or not the measured current position and the traffic information limited to the conditions stored in the storage medium are in a state in which the limited conditions are met. Based on the determination result, it is determined whether or not to notify the traffic information.

According to such a method, it is possible to display information that requires caution in traveling only under actually necessary conditions and visually recognize the information in advance by the user. According to an eighth aspect of the present invention, a self-moving gradient is measured, and it is determined whether or not the measured self-moving gradient is out of a preset angle range. Is performed.

According to such a method, at the time of the actual traveling, when the gradient exceeds the preset angle, this is notified by, for example, a voice message.
The driver can be reliably alerted when needed.

According to a ninth aspect of the present invention, a program for informing that the vehicle is going uphill or downhill is recorded based on the current position and traveling direction of the self-positioned vehicle and the gradient information read from the storage medium. It is characterized by having done.

With such recorded contents, it is possible to visually recognize that the traveling road is going uphill or downhill according to the actual traveling direction. It is possible to detect in advance a situation where the vehicle speed is exceeded or the speed is reduced without notice on a long uphill road on the highway, and this can be reliably avoided.

According to a tenth aspect of the present invention, it is determined whether or not the traffic information, which is limited in the conditions stored in the storage medium, is in a state that meets the above-mentioned limited condition, and if it is in a state in which the limited condition is met. A program for notifying the determined traffic information is recorded.

With such recorded contents, it is possible to display information that requires caution in traveling only under actually necessary conditions and visually recognize the information in advance by the user. According to an eleventh aspect of the present invention, there is provided a program for determining whether or not a measured self-moving gradient is out of a preset angle range, and performing a notification according to an uphill or downhill according to the determination result. It is characterized by.

With such recorded contents, when an actual traveling is made, when the gradient exceeds a preset angle, this is notified by, for example, a voice message, so that the driver is surely alerted when necessary. be able to.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) A first embodiment in which the present invention is applied to an automobile navigation device using GPS will be described below with reference to the drawings.

FIG. 1 shows a circuit configuration of the entire apparatus. As a GPS receiving function, a GPS antenna 1 installed on a roof of a vehicle body and an L1 band (a L1 band) received from a plurality of GPS satellites received by the GPS antenna 1 are used. 1.57542GH
z) C / A code data is demodulated by a despread LSI,
It has a GPS block 2 that decodes and determines the latitude, longitude, height, time, and traveling direction of the current location.

The GPS block 2 is connected to a graphic block 3. The graphic block 3 includes an FM antenna 4, a beacon antenna 5, a key block 6 having various input keys, road information and place name information. Map C, which is a recording medium that records the map data
A CD block 8 on which a D-ROM 7 is mounted, for example, a monitor block 9 having a display device composed of a color LCD panel and its driving circuit, and a D / A conversion unit 10 for converting guide audio data into analog are connected. Have been.

The graphic block 3 includes a ROM 11
CPU 1 that controls the entire apparatus based on the operation program read from the CPU and various data stored in RAM 12
3 are provided.

In the graphic block 3, an FM radio wave received by the FM antenna 4 is demodulated to obtain an FM demodulated signal of a desired broadcasting station, and an FM demodulated signal for decoding data multiplexed on the obtained FM demodulated signal. A multiplex receiver 14, a beacon receiver 15 that obtains data by demodulating a beacon radio wave received by the beacon antenna 5 and a tuning control by the FM multiplex receiver 14 and a reception control by the beacon receiver 15 perform traffic. A traffic information processing controller 16 for receiving information, mainly the GPS block 2, the key block 6, the CD block 8, the traffic information controller 16 and a data input / output between the CPU 13 and the timer unit 17 for measuring the current time. CPU peripheral circuit gate array (G / A) 18 for controlling Roller 19 is above ROM11, RA
M12 and CPU 13 are provided in a bus connection.
0 is connected.

When traveling on a road, the CPU 4 controls the G
When the latitude and longitude data of the current point, that is, the position data is sent from the PS block 2 together with the data indicating the other height, time, and traveling direction, the position data is used as a CP.
The map data at an arbitrary scale around the current location is called from the CD block 8 via the U peripheral circuit G / A 18 and is sent out as display data to the graphic controller 19 to which the video RAM 20 is connected. VICS (Vehicle Information) of FM data multiplex broadcasting and radio beacon via the communication device 15 and the traffic information processing controller 16
and CommunicationSystem:
When traffic information based on the road traffic information communication system is sent, the scale of the map displayed at that time is V
If it is in the scale range corresponding to the ICS, the transmitted traffic information is expanded and the graphic controller 1 is used.
9 and linked to the display data in the video RAM 20.

In the graphic controller 19, the CP
The map data linked from the traffic information transmitted from U13 is developed on the video RAM 20 to create display data for each screen, and the created display data is sent to the monitor block 9 to display the traffic information and the map. Display.

Further, voice data necessary for a guide message is stored in the ROM 11 in a state set in advance by the position data of the current position and map data in the vicinity of the current position, for example, when the vehicle is approaching a turning point in the set guidance route. Read out in combination from the stored ones,
The D / A converter 10 sends the data to the A / D converter 10.
The audio data converted into analog data by the amplifier 21 is appropriately amplified by the amplifier 21 and then loudspeaked by the speaker unit 22, so that the display message is displayed on the monitor block 9, and the navigation message is displayed by the user of the apparatus. Will be issued.

Further, when the road information in the map data near the current position includes gradient information of a predetermined angle, for example, ± 5% or more, and traffic information for limiting conditions such as a period and weather is included. In this case, if necessary, this is superimposed and displayed on the map of the monitor block 9 by a corresponding mark or the like, and is output as a voice message by the speaker unit 22.

The ROM 11 stores, in addition to the operation program and audio data of the CPU 13, the frequencies of the broadcasting stations in various places that provide VICS traffic information data as data multiplexed on FM broadcast radio waves, It is assumed that the position information and the like of the target area are registered and set in advance.

Next, the operation of the above embodiment will be described. FIG. 2 exemplifies a screen displayed on the screen of the monitor block 9 by the operation of this embodiment. As shown in the figure, the current driving road RD is superimposed and displayed on the display screen with the vehicle position mark SC superimposed thereon. As gradient information having a certain value or more, an uphill start symbol US, an uphill end symbol UE, Downhill start symbol DS and downhill end symbol D
E is displayed together with the slope value (percent). At the highest elevation point between the uphill end point UE and the downhill starting point DS, a vertex symbol TP which is a turning point from an uphill to a downhill is displayed.

If the traveling direction of the vehicle is reversed, the above-mentioned symbol is displayed on the opposite side of the road RD. However, mainly the CP for displaying the above
The contents of the operation processing by U13 will be described with reference to FIGS.

That is, in these figures, at first, each data of the latitude, longitude, height, time, and traveling direction of the current position is acquired from the GPS block 2 as information of the own vehicle position (step A01). The map data is read from the map CD-ROM 7 of the CD block 8 in accordance with the latitude and longitude data of the current position and the scale information set at that time from the data thus obtained.
Is developed and stored as display data including the position of the own vehicle on the video RAM 20 and is displayed and output on the monitor block 9 (step A02).

At this time, it is determined whether or not the read map data includes gradient information having a predetermined angle, for example, a value of ± 5% or more (step A03). Only when it is determined that the vehicle is included, the uphill start symbol US, the uphill end symbol UE, the downhill start symbol DS, and the downhill start symbol DS as shown in FIG. The image data of the symbol such as the end symbol DE is superimposed on the corresponding position in the display data on the video RAM 20 by the graphic controller 19, expanded and stored, and displayed and output together by the monitor block 9 (step A04). It is determined whether or not the uphill or downhill section indicated by is selected by the cursor key of the key block 6 (step A05).

However, if it is determined that no selection instruction is made by the cursor key, and the above-described step A
If it is determined in step 03 that the map data does not include gradient information at a predetermined angle or more, then, in the map data, for example, a period such as caution of road surface freezing in winter, suspension of traffic in a specific season, or caution in an avalanche is limited. It is determined whether or not the traffic information is included (step A06). If it is determined that the traffic information is included, it is further determined whether or not the traffic information is applicable during the limited period of the traffic information (step A06). Step A0
7).

Only when it is determined that the traffic information falls during the limited period of the traffic information, the graphic controller 19 stores the image data of the starting point and the ending point of the attention symbol corresponding to the limited traffic information by the video RAM 2.
The data is superimposed on the corresponding position in the display data on 0, expanded and stored, and displayed and output together with the monitor block 9 (step A08), and whether or not the displayed symbol is selected by the cursor key of the key block 6 is determined. A judgment is made (step A09).

However, if it is determined that no selection instruction is made by the cursor key, the above-mentioned step A06 is executed.
If it is determined in step A07 that the traffic information for limiting the period is not included, and if it is determined in step A07 that the traffic information does not correspond to the period in which the traffic information is limited, then the current position is displayed in step A04. Uphill starting symbol U
Whether the vehicle has reached S or the downhill starting symbol DS
That is, it is determined whether the current position is on an uphill or downhill having a gradient equal to or greater than a predetermined angle (step A10).

Here, when it is determined that the current position has reached the uphill start symbol US or the downhill start symbol DS, and the uphill or downhill section displayed in step A05 is indicated by the cursor key. If it is determined that the selection has been instructed, then it is determined whether or not information for limiting the period, such as winter, is added to the slope information of the uphill or downhill (step A11). Is determined to be added, then it is determined whether or not the information is applicable during the limited period (step A12).

If it is determined that the current time falls within the limited time period, it is determined that the vehicle is currently traveling on an uphill or downhill having a gradient of a predetermined angle or more, and The voice data indicating that special attention is required is read out from the ROM 11 and is transmitted to the speaker unit 22 via the D / A converter 10 and the amplifier 21.
Output as a voice message (step A1).
3), and return to the processing from step A01 again.

When it is determined in step A11 that the information for limiting the period is not added to the gradient information on the uphill or downhill, and in step A11, the period is limited to the gradient information on the uphill or downhill. However, if it is determined in step A12 that the information does not fall within the limited period, the vehicle is currently traveling on an ascending road having a gradient greater than or equal to a predetermined angle. The voice data indicating only the slope or the downhill is read from the ROM 11 and output as a voice message by the speaker unit 22 via the D / A conversion unit 10 and the amplifier 21 (step A14), and then the above-described step A01 is performed again. Return to the processing from.

In step A10, the current position has not reached the uphill start symbol US or the downhill start symbol DS, and the current position is on an uphill or downhill having a gradient greater than a predetermined angle. If it is determined that there is not, then it is determined whether or not the current position has reached the starting point of the attention sign corresponding to the traffic information for a limited time displayed in step A08 (step A15), and it is determined that it has arrived. Then, it is confirmed that the condition is satisfied during the limited period (step A16).

Then, if it is confirmed here that it is within the limited period, and if it is determined in step A09 that the symbol displayed on the monitor block 9 has been directly selected and instructed by the cursor key, the next limited period The voice data corresponding to the traffic information indicating that attention is required is read out from the ROM 11, and is read via the D / A converter 10 and the amplifier 21.
After outputting as a voice message in step 2 (step A1)
7), and return to the processing from step A01 again.

If it is determined in step A15 that the current position has not reached the starting point of the caution sign corresponding to the limited-time traffic information displayed in step A08,
If it is determined in step A15 that the current position has reached the starting point of the caution sign corresponding to the traffic information for a limited time period, but it is determined in the following step A16 that the current position does not correspond to the limited time period, Then, the process returns to step A01 again without outputting the voice message in step A17.

In the processing shown in FIGS. 3 and 4, the display and voice output of traffic information requiring a certain period of time and requiring special attention are performed together with an uphill or downhill having a gradient of a predetermined angle or more. It was explained as what to do, but instead of the time limit, the climate and weather conditions,
For example, by making these determinations together with means for inputting whether or not it is rainy, whether or not the amount of precipitation exceeds a certain value, or whether or not the outside air temperature is 0 [° C.] or less, The notification by display or sound may be performed.

(Second Embodiment) Hereinafter, the present invention will be described with reference to a GPS.
A second embodiment in which the present invention is applied to an automobile navigation device using a computer will be described with reference to the drawings.

The circuit configuration of the entire apparatus is the same as that shown in FIG. 1, and the same parts are denoted by the same reference numerals and description thereof will be omitted.
Next, the operation of the above embodiment will be described.

However, in the present embodiment, the display of the uphill or downhill is not performed as shown in FIG.
The user should be alerted by outputting sound from 2.

FIG. 5 mainly shows the contents of the operation processing by the CPU 13. Initially, the GPS block 2 outputs the latitude, longitude, height,
Time and traveling direction data are acquired (step B0
1) A CD corresponding to the latitude and longitude data of the current point and the scale information set at that time in the acquired data.
The map data is read out from the map CD-ROM 7 in block 8 and the video RAM is read by the graphic controller 19.
20 is developed and stored as display data including the position of the vehicle, and is displayed and output on the monitor block 9 (step B0).
2).

Next, it is determined whether the current date corresponds to, for example, winter during a preset period (step B03). Here, if it is determined that it is during the set period, the first angle α1 is set, and if it is determined that it is not during the set period, the second angle α2 (| α2 |> | α
1 |) is set in a register inside the CPU 13 (steps B04 and B05).

Thereafter, the gradient of the running road at that time is measured (step B06). This is, for example, the G
A predetermined section of the time-series change of the latitude, longitude, and height of the current position obtained in the PS block 2, for example, the past 10
It may be calculated from the [second] minute, or may be directly input from a car equipped with this navigation device using an instrument such as an inclinometer.

Thus, the measured slope β of the road is
It is determined whether the angle is out of an angle range ± α1 defined by the first angle α1 set in the above step B04 or B05 or an angle range ± α2 defined by the second angle α2 (step B07). .

If it is determined that the range is not out of the range, it is determined that there is no need to call the user of the navigation device to pay attention, and the process returns to the step B01 again. If it is determined that the road gradient β, then the road gradient β measured in step B06
It is determined whether or not the sloping road running at that time is an uphill slope from the sign of (step B08).

If it is determined that the vehicle is traveling on an uphill, the first warning that is prepared in advance is issued.
Is read from the ROM 11 and the D / A conversion unit 1
0 and the speaker unit 22 outputs the first voice message via the amplifier 21 (step B0).
9), and return to the processing from step B01 again.

If it is determined in step B08 that the traveling hill is not an uphill, it is determined that the vehicle is traveling on a downhill. The second voice data to be prompted is read from the ROM 11 and output as a second voice message by the speaker unit 22 via the D / A conversion unit 10 and the amplifier 21 (step B10), and then the above-described step B0 is performed again.
Return to the processing from 1.

In step B03, the first angle α1 or the second angle α2 is set depending on whether or not the predetermined period is in progress. However, instead of the period, the receiving device for receiving the weather forecast is used. And a detection mechanism for detecting raindrops, outside air temperature, etc., and the angle may be variably set according to climate or weather.
The magnitude relationship of the angle α2 is expressed as “| α2 |> | α1
Is not limited to |.

In step B07, the angle of the road measured in step B06 is compared with the angle set in step B04 or B05.
Although it is determined whether or not to perform the notification, the angle of the road indicated by the gradient information in the map data used in the first embodiment is compared with the angle set in step B04 or B05. Thus, it may be determined whether or not notification (display or voice output) is to be performed.

Further, in FIG. 5, the angle of the measured gradient is within the angle range ± α1 defined by the first angle α1,
Or, when it is out of the angle range ± α2 defined by the second angle α2, it is determined that the user is warned,
Next, the sign of the measured gradient angle is used to determine whether the vehicle is going uphill or downhill, but the angle range for determining whether or not to perform the notification on uphill and downhill is made different. It is also possible to do.

Although the method described in the first and second embodiments has been described as being fixedly stored in the ROM 11 as a program to be executed by the navigation device, the present invention is not limited to this. For example, C
The map is stored as an operating system in a part of the map CD-ROM 7 mounted on the D block 8, and is stored in the RA
It may be operated after being written in an electrically rewritable memory such as an EEPROM or a flash memory in place of the M12, and the medium on which the operation program is recorded is not limited to a CD-ROM. Recording media,
For example, it is also possible to write in a magnetic disk (floppy disk, hard disk, etc.), an optical disk (DVD, data MD, etc.), a semiconductor memory, etc. and apply it to various devices, or to transmit it through a communication medium and apply it to various devices. In addition, the present invention can be applied not only to a navigation device mounted on an automobile but also to a data processing device such as a personal computer by mounting these various devices. In addition, the present invention can be variously modified and implemented without departing from the gist thereof.

[0063]

According to the first aspect of the present invention, it is possible to visually recognize that the road on which the vehicle is traveling is uphill or downhill in accordance with the actual traveling direction. It is possible to detect in advance a situation where the speed is exceeded or that the speed is reduced without notice on a long uphill on the highway, and this can be reliably avoided.

According to the second aspect of the present invention, information that requires caution in traveling is displayed only under actually necessary conditions and can be visually recognized by the user in advance. According to the third aspect of the present invention, when an actual traveling is made, when the gradient exceeds a preset angle, this is notified by, for example, a voice message, so that the driver can be surely alerted when necessary. it can.

According to the fourth aspect of the present invention, when the vehicle travels on a previously stored road, when the gradient exceeds a predetermined angle, this is notified by, for example, a voice message, so that it is ensured when necessary. The driver can be alerted.

According to the fifth aspect of the invention, in addition to the effects of the third or fourth aspect of the present invention, the angle of the gradient for performing the notification is changed depending on whether or not the set condition is satisfied. Therefore, the angle of the gradient determined to require attention is automatically changed to an appropriate value according to conditions such as the season and the weather, so that the notification can always be performed at an optimal timing.

According to the sixth aspect of the present invention, it is possible to visually recognize that the traveling road is going uphill or downhill according to the actual traveling direction. It is possible to detect in advance the situation that the vehicle speed will be reduced and the speed will decrease without notice on a long uphill road on the highway, and this can be reliably avoided.

According to the seventh aspect of the present invention, information that requires caution in traveling can be displayed only under actually necessary conditions and visually recognized by the user in advance. According to the invention described in claim 8, at the time of the actual traveling, when the gradient exceeds the preset angle, this is notified by, for example, a voice message, so that the driver can be surely alerted when necessary. it can.

According to the ninth aspect of the present invention, it is possible to visually recognize that the traveling road is going uphill or downhill according to the actual traveling direction. It is possible to detect in advance the situation that the vehicle speed will be reduced and the speed will decrease without notice on a long uphill road on the highway, and this can be reliably avoided.

According to the tenth aspect of the present invention, it is possible to display information requiring caution in traveling only under actually necessary conditions and to allow the user to visually recognize the information in advance. According to the eleventh aspect of the present invention, at the time of the actual traveling, when the gradient exceeds the preset angle, this is notified by, for example, a voice message, so that the driver can be surely alerted when necessary. it can.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a circuit configuration according to a first embodiment of the present invention.

FIG. 2 is an exemplary view showing a display screen according to the embodiment;

FIG. 3 is a flowchart showing processing contents of the operation according to the embodiment;

FIG. 4 is a flowchart showing processing contents of the operation according to the embodiment;

FIG. 5 is a flowchart showing processing contents of an operation according to the second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... GPS antenna 2 ... GPS block 3 ... Graphic block 4 ... FM antenna 5 ... Beacon antenna 6 ... Key block 7 ... Map CD-ROM 8 ... CD block 9 ... Monitor block 10 ... D / A conversion part 11 ... ROM 12 ... RAM 13 CPU 14 FM multiplex receiver 15 Beacon receiver 16 Traffic information controller 17 Timer section 18 CPU peripheral circuit gate array (G / A) 19 Graphic controller 20 Video RAM 21 Amplifier 22 Speaker unit

Claims (11)

[Claims] 1. Map data storage means for storing map data including road information having gradient information, positioning means for positioning the current position and traveling direction of the vehicle, and a current position obtained by the positioning means. Map data expanding means for reading map data from the map data storage means and expanding the map data as display data, gradient information in the display data expanded by the map data expanding means, and a self-moving direction obtained by the positioning means. A map display device comprising: processing means for adding image information indicating an uphill or a downhill based on the information; and display means for displaying display data obtained by the processing means. 2. Map data storage means for storing map data including road information having traffic information with limited conditions; positioning means for positioning the current position of the vehicle; and a current position obtained by the positioning means. Map data expansion means for reading map data from the map data storage means based on the map data expansion means and expanding the display data as display data; and determining whether or not the traffic information in the display data expanded by the map data expansion means is in a state meeting the limiting condition. A process of adding image information indicating traffic information determined to be in a state meeting the limiting condition to the corresponding road information in the display data expanded by the map data expanding unit. And a display means for displaying display data obtained by the processing means. 3. A measuring means for measuring its own traveling gradient, a judging means for judging whether or not its own traveling gradient obtained by the measuring means is out of a preset angle range, and a judgment result of this judging means. And a notification means for performing notification according to an uphill or downhill according to the following. 4. A storage unit for storing road gradient information, a determination unit for determining whether an angle indicated by the gradient information stored in the storage unit is out of a preset angle range, And a notification means for performing notification according to the result of the determination according to the uphill or downhill. 5. A setting means for setting a condition for the self-progress, a judging means for judging whether or not the condition set by the setting means is satisfied, and the pre-set according to the judgment result of the judging means. The driving assistance device according to claim 3, further comprising a change unit that changes an angle. 6. The current position and the traveling direction of the own vehicle are measured, and based on the measured current position and the traveling direction of the vehicle and the gradient information read from the storage medium, it is notified that the vehicle is going uphill or downhill. An information notification method characterized by: 7. A self-position is measured, and based on a result of the determination as to whether or not the measured current position and traffic information limited to conditions stored in a storage medium are in a state that meets the above-described limited conditions. And determining whether or not to notify the traffic information. 8. A self-movement gradient is measured, and it is determined whether or not the measured self-progression gradient is out of a preset angle range. Based on the result of the determination, a notification according to an uphill or downhill is performed. A driving assistance method characterized by the following. 9. A program for notifying that the vehicle is going uphill or downhill based on the measured current position and traveling direction of the vehicle and the gradient information read from the storage medium. recoding media. 10. A determination is made as to whether or not the traffic information stored in the storage medium, in which the conditions are limited, is in a state that meets the above-mentioned limitation condition, and the traffic information that is determined to be in a state in which the limitation condition is satisfied is reported. A recording medium characterized by recording a program to be executed. 11. A program for determining whether or not a measured self-moving gradient is out of a predetermined angle range, and recording a program corresponding to an uphill or downhill according to the determination result. Recording medium.