JP2001272242A - Navigation system, guidance route announcing method, and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a navigation system, capable of appropriately announcing a guidance route almost without having to prevent image appreciation of passengers. SOLUTION: A processing control part 15 creates data for display, including an arrow icon, etc., for guiding a route and supplies it for a display control part 17 in the case of the need for issuing an instruction for guiding a route according to the relationship between locational information acquired from a GPS module 12 and guidance route information stored in a storage part 13. The display control part 17 creates an image signal (RGB signal, etc.), for an arrow icon, etc., according to the acquired data for display and supplies it for a display device 19 together with a switch signal to instruct the switching on-screen display. When the RGB signal and switch signal are supplied from the display control part 17, the display device 19 superposes the arrow icon, etc., on the image supplied form an image reproducing device 18 and displays them on-screen.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation system, a guidance route notifying method, and a recording medium capable of appropriately notifying a guidance route without substantially hindering passengers from watching images.

[0002]

2. Description of the Related Art A conventional navigation system is, for example, a vehicle equipped with a navigation system (hereinafter referred to as a vehicle).
It is called "own car". A route to be guided from the departure point to the destination is selected, and an image (guide route image) including the selected guide route is displayed on a predetermined monitor (display device). Then, the navigation system combines and displays the symbol indicating the current position of the vehicle with the guidance image. Also,
The conventional navigation system displays an intersection and an enlarged image (enlarged image of the intersection) near the intersection when the vehicle is approaching an intersection (branch road) where the vehicle should make a right / left turn. Instruct appropriately. Thus, the user can easily reach the destination by driving the own vehicle according to the guidance route image and the intersection enlarged image displayed on the monitor.

[0003] Recently, a navigation system is also known in which a guidance route can be instructed by voice in addition to displaying a guidance route image or an enlarged intersection image. Such a navigation system is, for example, a dedicated ASP (Au
If the vehicle needs to make a right or left turn at an intersection located ahead in the traveling direction in accordance with the current position of the vehicle and the guidance route, an appropriate voice instruction is given. Accordingly, the user can reach the destination without departing from the guidance route without looking at the guidance route image displayed on the monitor to some extent.

[0004] Also, recent navigation systems include:
The monitor can display not only a navigation screen (guidance route image or intersection enlarged image) but also, for example, a video image or the like supplied from a predetermined video playback device or the like. Thus, the passengers and the like can display the video image on the monitor instead of the navigation screen and view the video image, so that the passenger can arrive at the destination without being bored even while driving for a long time or the like. .

[0005]

However, a navigation system capable of displaying a video image on a monitor as described above cannot display a navigation screen while a video image is being displayed. Therefore, passengers and the like often need to switch the display of the monitor from the video image to the navigation screen in order to confirm the current position and whether the vehicle is out of the guidance route, which is very complicated. In order to solve such a problem, a navigation system capable of displaying both a video image and a navigation screen on a monitor by screen division or picture-in-picture has been realized. However, when screen division is performed, the screen size of each screen becomes small.Therefore, a monitor with a relatively large screen size cannot be put to practical use, and a control circuit and the like are added to realize the screen division and the like. This has led to increased costs. In addition, for passengers or the like who watch video images, the display of the images is significantly hindered, so that they cannot concentrate on watching.

On the other hand, in a navigation system provided with a dedicated ASP or the like as described above, a guidance route can be instructed to some extent by voice even when a video image is displayed on a monitor. However, in many cases, the audio of the video image and the audio guidance of the navigation are issued at the same time, and there is a case where the guidance route is deviated by overlooking the instruction or by mistakenly hearing the instruction.
Therefore, when a voice guidance for navigation is issued, a function of prioritizing the voice guidance by muting the audio of the video image is required. When using this function, it is convenient for users who drive their own vehicles, but for passengers watching video images,
Each time the navigation voice guidance is issued, the audio of the video image is interrupted, so that it was not possible to concentrate and appreciate.

The present invention has been made in view of the above circumstances, and provides a navigation system, a guidance route notification method, and a recording medium that can appropriately report a guidance route without substantially hindering passengers from watching images. The purpose is to do.

[0008]

In order to achieve the above object, a navigation system according to a first aspect of the present invention stores guidance route information for defining a guidance route defining a route to be followed. Means, current position information obtaining means for obtaining current position information indicating the current position, and a route to be guided according to the current route information stored in the current route information storage means and the current route information stored in the current route information obtaining means. Notification image generating means for generating an image for displaying, a display means for displaying an image supplied from a predetermined device, and a notification image generated by the notification image generating means, to an image displayed on the display means. And display control means for superimposed display.

According to the present invention, the guidance route information storage means stores guidance route information that defines a guidance route that defines a route on which the vehicle should travel. The current location information acquiring means acquires current location information indicating the current location of the vehicle, for example, according to satellite radio waves transmitted from GPS satellites. The notification image generation unit generates, for example, an arrow icon for notifying the route to be guided according to the guidance route information stored in the guidance route information storage unit and the current location information acquired by the current location information acquisition unit. The display unit displays, for example, a video supplied from a DVD playback device. The display control means displays the notification image generated by the notification image generation means so as to be superimposed on the video displayed on the display means. As described above, since the arrow icon or the like for notifying the route to be guided to the image displayed on the display means is displayed in a superimposed manner, the guide route is appropriately notified without substantially hindering the passenger from watching the image. be able to.

[0010] To achieve the above object, a navigation system according to a second aspect of the present invention comprises: guidance route information storage means for storing guidance route information for defining a guidance route defining a route on which a vehicle should travel; According to a radio wave transmitted from a satellite, a current position information acquiring unit that acquires current position information indicating a current position of the own vehicle, guidance route information stored in the guidance route information storage unit, and a current location information acquired by the current location information acquiring unit. A notification image generating means for generating an image including an arrow indicating a direction of a route to be guided at least on a branch road; a display means for displaying a video supplied from a predetermined device; Display control means for displaying the notification image on-screen in a predetermined area in the video displayed on the display means, That.

According to the present invention, the guidance route information storage means stores guidance route information that defines a guidance route that defines a route on which the vehicle should travel. The current location information acquiring means acquires current location information indicating the current location of the vehicle, for example, according to satellite radio waves transmitted from GPS satellites. The notification image generating means includes, for example, an arrow icon indicating at least the direction of the route to be guided on the branch road in accordance with the guidance route information stored in the guidance route information storage means and the current location information acquired by the current location information acquisition means. Generate The display unit displays, for example, a video supplied from a DVD playback device. The display controller displays the notification image generated by the notification image generator on a predetermined area in the video displayed on the display. As described above, the on-screen display of the arrow icon or the like for notifying the route to be guided to the predetermined area in the image displayed on the display means allows the guide route to be appropriately adjusted without substantially hindering the passenger from watching the image. Can be notified.

The notification image generating means includes: a name of a branch on the route to be guided; an arrow icon indicating a direction of the route to be guided on the branch; a distance to the branch; and a time required for the branch. May be generated.

In order to achieve the above object, a guidance route notification method according to a third aspect of the present invention is to select a guidance route that defines a route to which a vehicle should travel, and to provide guidance route information that defines the selected guidance route. Is stored in a predetermined storage unit, a current location information obtaining step of obtaining current location information indicating a current location of the own vehicle according to a radio wave transmitted from a satellite, and a guidance route information storing step. A notification image generating step of generating an image including at least a symbol indicating a direction of a route to be guided on a branch road in accordance with the guidance route information and the current location information acquired in the current location information acquiring step; A display step of displaying the displayed image on a predetermined display unit,
The notification image generated in the notification image generation step,
A display control step of performing on-screen display in a predetermined area in an image displayed on a display unit in the display step,
It is characterized by having.

According to the present invention, in the guidance route information storing step, a guidance route that defines a route to which the vehicle should travel is selected, and guidance route information that defines the selected guidance route is stored in a predetermined storage unit. In the current location information acquisition step, for example, current location information indicating the current location of the vehicle is acquired according to satellite radio waves transmitted from a GPS satellite. The notification image generation step includes, for example, an arrow icon indicating at least the direction of the route to be guided on the branch road in accordance with the guidance route information stored in the guidance route information storage step and the current location information acquired in the current location information acquisition step. Generate an image containing. In the display step, for example, the video supplied from the DVD playback device is displayed on a predetermined display unit. In the display control step, the notification image generated in the notification image generation step is displayed on-screen in a predetermined area in the video displayed on the display unit in the display step. in this way,
In order to display an arrow icon or the like for notifying a route to be guided to a predetermined area in a video displayed on the display unit on-screen, it is necessary to appropriately notify the guide route without substantially hindering passengers from watching the video. Can be.

In order to achieve the above object, a recording medium according to a fourth aspect of the present invention selects a guidance route that defines a route to which a vehicle should travel, and generates guidance route information that defines the selected guidance route. A guidance route information storing step of storing the current location information indicating the current location of the vehicle according to a radio wave transmitted from a satellite;
According to the guidance route information stored in the guidance route information storing step and the current location information acquired in the current location information acquiring step, an image including at least a symbol indicating a direction of a route to be guided on a branch road is generated. A notification image generation step, a display step of displaying a video supplied from a predetermined device on a predetermined display unit, and a notification image generated in the notification image generation step, which is displayed on the display unit in the display step. And a display control step of performing on-screen display in a predetermined area of the video to be displayed.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A navigation system according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic diagram showing an example of a navigation system 1 applied to an embodiment of the present invention. This system includes a GPS antenna 11, a GPS module 12, a storage unit 13, a CD-ROM 14,
A processing control unit 15, an operation unit 16, a display control unit 17,
Video playback device 18, display device 19, voice synthesis unit 20
And an audio output unit 21.

A GPS (Global Positioning System) antenna 11 includes a helical antenna, a dielectric antenna,
It is composed of a patch type planar antenna or the like, and receives a spread spectrum modulated satellite radio wave transmitted from a predetermined GPS satellite.

The GPS module 12 tunes to satellite radio waves transmitted from a plurality of GPS satellites and received by the GPS antenna 11, and despreads and demodulates each satellite radio wave to obtain a plurality of satellite reception signals. The GPS module 12
Position information including latitude, longitude, altitude, and the like is generated based on the difference between the arrival times of the satellite radio waves calculated according to the acquired satellite reception signals. GPS module 12
Supplies the generated position information to the processing control unit 15.

The storage unit 13 has a RAM (Random Access Me
mory) and information storage devices such as magnetic disks,
Guidance route information that defines a guidance route to which the vehicle should travel toward the set destination is stored. The guidance route information is obtained by searching the road information (road segment, road node, and the like) described later recorded on the CD-ROM 14 by the processing control unit 15. For example, when the departure place and the destination are set by the user before the departure, the processing control unit 15 searches the CD-ROM 14 and determines the shortest distance from the departure place to the destination (or the minimum required time). Guidance route information for defining an appropriate guidance route to be obtained.

The CD-ROM 14 stores predetermined map information for display, and stores road segments (links).
And road network information including information on road nodes and the like.
This road segment is predetermined section information constituting each road, and is composed of position coordinates, distance, required time, and the like. The road node is information on intersections (branches) and the like, and includes position coordinates, connection destination road segments, and the like. The CD-ROM 14 supplies map data and road network information to the processing control unit 15 via a drive device (not shown).

The processing control unit 15 is, for example, a ROM (Read
Only Memory), RAM, and CPU (Central Processes)
sing Unit), and consists of a one-chip microcomputer, etc.
The entire navigation system 1 is controlled. When inputting the departure place and the destination via the operation part 16, the processing control part 15 searches the road network information and the like stored in the CD-ROM 14, and selects a guidance route from the departure place to the destination. Then, guidance route information defining the selected guidance route is stored in the storage unit 13.

The processing control unit 15 is adapted to issue a route guidance instruction according to the relationship between the position information acquired from the GPS module 12 and the guidance route information stored in the storage unit 13 when it is necessary to issue a route guidance instruction. Is generated on the display device 19 via the display control unit 17 to display on-screen. For example, when the content to be notified is an instruction to turn right at an intersection in the traveling direction, the process control unit 15 indicates the name of the intersection 31 to be turned right and the direction of right turn as shown in FIG. The display data (notification image) including the arrow icon 32, the distance 33 to the intersection, and the required time 34 to the intersection is generated. Then, the display control unit 17 superimposes the generated display data on the video displayed on the display device 19 and performs on-screen display.

Similarly, when it is necessary to issue an instruction to guide a route, the processing control unit 15 generates a guidance message (voice guidance) to guide the route by voice. Then, the generated guidance message is sent to the voice synthesis unit 2.
0, the user is notified of voice guidance for guiding the route via the voice output unit 21.

The operation unit 16 includes a predetermined operation panel and supplies various information to the processing control unit 15 in accordance with an input operation by a user. For example, the operation unit 16 inputs audio output setting information for setting on / off of the audio guidance and supplies the information to the processing control unit 15.

The display controller 17 includes a plane memory used for on-screen display, and stores display data supplied from the processing controller 15 in the plane memory.
The display control unit 17 generates a video signal (such as an RGB signal) according to the display data stored in the plane memory, and generates a video signal (eg, an RGB signal) along with a switching signal that instructs switching of on-screen display.
It is supplied to the display device 19.

The video playback device 18 is a video playback device,
It is composed of a VD (Digital Versatile Disk) playback device, a television, and the like, and supplies a predetermined video signal and the like (video signal and audio signal) to the display device 19.

The display device 19 is an LCD (Liquid Crystal).
A video monitor according to a video signal or the like supplied from the video reproduction device 18 is provided by a predetermined monitor such as a display (CRT) or a CRT (Cathode Ray Tube). The display device 19
When a video signal (such as an RGB signal) and a switching signal are supplied from the display control unit 17, an arrow icon or the like for guiding a route is superimposed on a predetermined area in the video supplied from the video playback device 18. To display on-screen. At this time, the arrow icon or the like may be displayed by blinking, or the arrow icon or the like may be displayed as a mesh-like image (transmissive image) to make the icon stand out visually.

The voice synthesizing unit 20 is composed of a voice chip (Voice IC) capable of synthesizing a voice guidance message (voice guidance) for guiding a route. The voice synthesis unit 20 is controlled by the processing control unit 15 and supplies the synthesized guidance message to the voice output unit 21.

The audio output unit 21 comprises a speaker or the like,
The guidance message supplied from the voice synthesizing unit 20 is output by voice.

Hereinafter, the route guidance processing in the navigation system 1 according to this embodiment will be described with reference to the drawings. FIG. 3 is a flowchart for explaining the route guidance processing. The route guidance processing shown in FIG. 3 starts after a destination or the like is input from the user via the operation unit 16 before departure, and a guidance route from the departure point to the destination is selected.

First, the processing control unit 15 obtains the current position of the vehicle according to the position information obtained from the GPS module 12 (step S11). That is, the processing control unit 15 acquires the position information from the GPS module 12,
The acquired position information is matched with the road network information recorded on the CD-ROM 14 (map matching) to acquire the current position of the own vehicle.

The processing control unit 15 determines whether a guidance instruction is necessary (step S12). That is, the processing control unit 15 determines whether or not it is necessary to issue an instruction for guiding a route according to the relationship between the acquired current position and the guidance route information stored in the storage unit 13. For example, the processing control unit 15 determines whether or not the current position of the own vehicle is within a predetermined distance range by comparing the current position of the own vehicle with the position of a forward intersection to be turned right or left determined from the guidance route information.

When the processing control section 15 determines that the guidance instruction is not necessary, the processing advances to step S18 described later. On the other hand, when it is determined that the guidance instruction is necessary, the processing control unit 15 generates display data according to the instruction, and supplies the generated display data to the display control unit 17 (step S13). In other words, the processing control unit 15 performs an on-screen display on the display device 19, as shown in FIG. 2, an intersection name 31 to be turned left and right, an arrow icon 32 indicating the direction of right and left turns, a distance 33 to the intersection, Further, display data including the required time 34 to the intersection is generated and supplied to the display control unit 17.

The display control unit 17 generates a video signal (RGB signal or the like) according to the supplied display data, and supplies the generated video signal to the display device 19 together with the switching signal.
An arrow icon or the like is displayed on the display device 19 on a screen (step S14). That is, the display control unit 17
A video signal (RGB signal or the like) is generated according to the display data stored in the plane memory, and the generated video signal and
A switching signal for instructing switching of the on-screen display is supplied to the display device 19.

At this time, when the display device 19 displaying the video supplied from the video reproduction device 18 acquires the video signal and the like supplied from the display control unit 17, the display device 19 displays the image according to the video signal on the on-screen display. I do. For example, the display device 1
9 is an intersection name to be turned right as shown in FIG.
The image including the arrow icon indicating the right turn, the distance to the intersection, and the required time to the intersection is displayed on the video playback device 18.
Is superimposed on a predetermined area 92 in the video 91 supplied from the computer and displayed on the screen. Thus, the display device 1
9 is displayed on the video playback device 1
Since the display is small in the corner of the video screen supplied from the display screen 8, it is possible to appropriately notify the user (driver or the like) of the guidance route without substantially hindering the passenger from watching the video.

Returning to FIG. 3, the processing control section 15 determines whether or not the voice guidance is set to output (voice output ON) (step S15). That is, the processing control unit 15 determines whether or not the output of the voice guidance message for guiding the route is set to ON by the user.

If the processing control section 15 determines that the audio output is not set to ON, the processing advances to step S18 described later. On the other hand, when it is determined that the voice output is set to ON, the processing control unit 15 generates a guidance message and supplies it to the voice synthesis unit 20 (step S16).
That is, a predetermined guidance message for instructing a right / left turn is generated and supplied to the voice synthesis unit 20. For example, the processing control unit 15 generates a guidance message such as “Right direction at the entrance of XX station 10 km ahead. The required time is 10 minutes” and supplies it to the speech synthesis unit 20.

The voice synthesizer 20 outputs a voice according to the guidance message from the voice output unit 21 (step S1).
7). That is, the voice synthesis unit 20 generates a voice signal according to the guidance message, and outputs the voice signal via the voice output unit 21 as voice. Thus, when the voice guidance is set to output, a voice guidance message is output. That is, if the passenger is watching the video supplied from the video playback device 18, the output of the voice guidance can be stopped.

The processing control unit 15 determines whether the vehicle has arrived at the destination (step S18). That is, the processing control unit 15 compares the current position of the vehicle with the position of the destination to determine whether the vehicle has arrived at the destination. Processing control unit 1
If it is determined that the vehicle has not arrived at the destination, the process returns to step S11, and the process returns to steps S11 to S18.
Is repeatedly executed. On the other hand, when it is determined that the vehicle has arrived at the destination, the processing control unit 15 ends the route guidance processing.

As described above, when a route guidance instruction is required, an arrow icon or the like for notifying the guidance route is displayed on the screen of the display device 19 in a small on-screen manner.
For this reason, it is possible to appropriately inform the user (driver or the like) of the guidance route without substantially hindering the passenger from watching the image. By stopping the output of the audio guidance, the audio output of the video supplied from the video playback device 18 is not hindered. For this reason, even when the passenger in the passenger seat is watching the video and audio reproduced by the video reproducing device 18, the passenger (driver, etc.) hardly hinders the passenger from watching the video. The guidance route can be properly notified.

In the above embodiment, as shown in FIG. 4, an arrow icon or the like for guiding a route is displayed on the display device 1.
Although the on-screen display is performed at the right end of 9, the position where the arrow icon or the like is displayed is arbitrary. Further, the position where the arrow icon or the like is displayed may be freely changed according to the operation of the user. For example, the display device 19 on which a touch panel or the like is arranged on the screen acquires a user's touch input (touch of a finger) and moves the position where an arrow icon or the like is displayed according to the movement of the user's finger. To

More specifically, when the display device 19 detects the contact of the user's finger through the touch panel, the display device 19 acquires information such as the moving distance and direction of the finger displaced on the screen and performs processing control. To the unit 15. The processing control unit 15
The display control unit 17 is instructed to change the display start position according to the acquired information such as the moving distance. And the display control unit 1
Reference numeral 7 denotes a horizontal and vertical display start position of display data stored in the plane memory, for example, a vertical synchronization signal (VSyn).
c) changes during the low level period. As a result, the display device 19 displays the changed display position 9 as shown in FIG.
An arrow icon or the like is displayed on screen 3.

In the above embodiment, the operation unit 16
Although the on / off setting of the voice guidance is set in, the on / off setting of the voice guidance may be set via the touch panel. For example, the display control unit 17 displays an audio output setting screen on the display device 19 on the screen. Then, the display device 19 acquires the setting (sound output on / off) input by the user via the touch panel, and supplies the setting to the processing control unit 15.

Further, it may be possible to re-output the guidance message once issued, or to output the guidance message when the voice output is off. For example, when detecting that the display area such as the arrow icon has been touched twice in succession through the touch panel, the display device 19 supplies the processing control unit 15 with information instructing re-output of the guidance message and the like. The processing control unit 15 generates a guidance message, supplies the guidance message to the voice synthesis unit 20, and outputs voice guidance for guiding a route via the voice output unit 21 even when the voice output is off.

In the above embodiment, the arrow icons and the like for guiding the route are displayed on the screen.
By providing a VICS receiver or the like that can acquire CS (Vehicle Information Communication System) information, accident information, lane regulation information, and the like may be displayed on-screen. More specifically, the navigation system 1 demodulates an FM multiplex signal, a beacon, and the like, and
It further includes a VICS receiver capable of acquiring information. The VICS receiver extracts accident information, lane regulation information, and the like from the acquired VICS information, and supplies the extracted accident information and the like to the processing control unit 15.

Then, the processing control unit 15 finds a location corresponding to the accident information or the lane regulation information in the destination guidance route according to the relationship between the guidance route information stored in the storage unit 13 and the accident information. Search for or not. Processing control unit 1
5 determines the distance from the current position to the relevant point when it is determined that the relevant point is present, generates display data including the details of the accident or lane regulation and the distance, and supplies the display data to the display control unit 17. I do. The display control unit 17 having acquired the display data generates a video signal (such as an RGB signal) according to the display data, and supplies the video signal (eg, an RGB signal) to the display device 19 together with the switching signal. Then, the display device 19 displays the content of the accident and the like and the distance thereof on-screen.

Also, FM which can receive FM multiplex teletext broadcasting
By further providing a multiplex receiver or the like, a symbol or the like indicating the weather may be displayed on-screen. More specifically, the navigation system 1 further includes an FM multiplex receiver that can receive FM multiplex teletext (text information). The FM multiplex receiver extracts weather forecast information from the received character information, and supplies the extracted weather forecast to the processing control unit 15.

The processing control section 15 determines the area (Tokai area, Kanto area, etc.) to which the destination of the guidance route information stored in the storage section 13 belongs, and includes the information in the weather forecast information supplied from the FM multiplex receiver. Specify the expected weather for the relevant area (destination). The processing control unit 15 generates display data including a weather symbol indicating the expected weather of the specified destination, and supplies the display data to the display control unit 17. The display control unit 17 that has acquired the display data generates a video signal (such as an RGB signal) according to the display data, and generates a video signal (eg, an RGB signal) along with the switching signal.
9. Then, the display device 19 displays on-screen the weather symbols and the like.

Further, the present time may be displayed on the display device 19 in digital display or analog display by using accurate time information transmitted from a GPS satellite which can be obtained via the GPS module 12.

Further, a predetermined interface for controlling a mobile communication device such as an automobile telephone or a portable telephone is provided.
In accordance with the telephone number input screen displayed on the screen, a telephone number input from the touch panel may be dialed using the mobile communication device.

The navigation system according to the embodiment of the present invention can be realized by using a general computer system without using a dedicated system. For example, a navigation system that executes the above-described processing is installed in a computer by installing the program from a medium (a floppy (registered trademark) disk, a CD-ROM, or the like) storing the program for executing any of the above. can do.

A method for supplying a program to a computer is arbitrary. For example, the information may be supplied via a communication line, a communication network, a communication system, or the like. As an example, a bulletin board (BB) of a communication network
The program is posted on S) and distributed via a network. And start this program, O
Under the control of S, the above-described processing can be executed by executing the program in the same manner as other application programs.

[0054]

As described above, according to the present invention,
The guidance route can be appropriately notified without substantially hindering the passenger from watching the image.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an example of a navigation system according to an embodiment of the present invention.

FIG. 2 is a schematic diagram illustrating an example of display data including an intersection name, an arrow icon, a distance, an estimated time, and the like used for on-screen display.

FIG. 3 is a flowchart illustrating a route guidance process according to the embodiment of the present invention.

FIG. 4 is a schematic diagram showing arrow icons and the like displayed on a screen on a display device.

FIG. 5 is a schematic diagram showing arrow icons and the like displayed on the screen at different positions on the display device.

[Explanation of symbols]

 Reference Signs List 1 navigation system 11 GPS antenna 12 GPS module 13 storage unit 14 CD-ROM 15 processing control unit 16 operation unit 17 display control unit 18 video playback device 19 display device 20 audio synthesis unit 21 audio output unit

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2C032 HB02 HB22 HB23 HB24 HB25 HC08 HC14 HC23 HC27 HC31 HD04 HD07 HD16 2F029 AA02 AB07 AC02 AC14 AC18 AC19 5H180 BB05 BB13 EE18 FF05 FF24 FF25 FF27 FF33 FF18 001 HH23 JJ11 JJ12 JJ77 JJ78 KK37 KK43 KK56

Claims (5)

[Claims] 1. A guidance route information storage unit that stores guidance route information that defines a guidance route that defines a route to be followed, a current location information acquisition unit that acquires current location information indicating a current location, A notification image generation unit that generates an image for notifying a route to be guided according to the stored guidance route information and the current location information acquired by the current location information acquisition unit; and displaying an image supplied from a predetermined device. A navigation system comprising: a display unit; and a display control unit configured to display a notification image generated by the notification image generation unit so as to be superimposed on a video displayed on the display unit. 2. A guidance route information storage means for storing guidance route information for defining a guidance route defining a route to which a vehicle should travel, and acquiring current location information indicating a current location of the vehicle according to radio waves transmitted from a satellite. An image including at least a symbol indicating a direction of a route to be guided on a branch road in accordance with current position information acquiring means, guidance route information stored in the guidance route information storage means, and current position information acquired by the current position information acquiring means; A notification image generating means for generating an image, a display means for displaying a video supplied from a predetermined device, and a notification image generated by the notification image generating means in a predetermined area in the video displayed on the display means. A navigation system, comprising: display control means for performing on-screen display. 3. The notification image generating means includes: a name of a branch on the route to be guided; an arrow icon indicating a direction of the route to be guided on the branch; a distance to the branch; The navigation system according to claim 2, wherein a transmission image including a required time is generated. 4. A guidance route information storing step of selecting a guidance route that defines a route to which the vehicle should travel, storing guidance route information defining the selected guidance route in a predetermined storage unit, and a radio wave transmitted from a satellite. According to the present location information acquisition step of acquiring current location information indicating the current location of the vehicle, guidance route information stored in the guidance route information storage step, at least according to the current location information acquired in the current location information acquisition step, A notification image generation step of generating an image including a symbol indicating a direction of a route to be guided in a forked road; a display step of displaying an image supplied from a predetermined device on a predetermined display unit; and the notification image generation step The notification image generated by
A display control step of performing on-screen display in a predetermined area in an image displayed on a display unit in the display step. 5. A guidance route information storing step of selecting a guidance route defining a route to which the vehicle should travel, storing guidance route information defining the selected guidance route in a predetermined storage unit, and a radio wave transmitted from a satellite. According to the present location information acquisition step of acquiring current location information indicating the current location of the vehicle, guidance route information stored in the guidance route information storage step,
A notification image generating step of generating an image including at least a symbol indicating a direction of a route to be guided on a branch road in accordance with the current location information obtained in the current location information obtaining step; A display step of displaying on the display unit, and a display control step of displaying the notification image generated in the notification image generation step on-screen in a predetermined area in a video displayed on the display unit in the display step. A computer-readable recording medium on which a program for causing a computer to execute the guidance route notification method is recorded.