JP2011095186A - Navigation device, display control method, navigation program, and recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a navigation device capable of shortening a time from engine start until departure of a vehicle. <P>SOLUTION: This navigation device 100 is loaded on a moving body, and displays prescribed information at a starting time. A photographing part 110 photographs a periphery of the moving body. A display part 101 displays information to be provided to a user. An image acquisition part 102 acquires an image photographed by the photographing part 110 for photographing the periphery of the moving body. A display control part 103 displays on the display part 101, an image acquired by the image acquisition part 102 at least until starting processing of the navigation device 100 is finished at the starting time of the navigation device 100. A photographing control part 104 controls a photographing direction of the photographing part 110. A storage part 105 stores a moving state of the moving body detected by a detection part 106. The detection part 106 detects the moving state of the moving body just before stop. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a navigation device, a display control method, a navigation program, and a recording medium mounted on a moving body. However, utilization of this invention is not restricted to a navigation apparatus, a display control method, a navigation program, and a recording medium.

Conventionally, vehicles such as automobiles are equipped with a navigation device that searches for a route to a destination and guides to the destination. As such a navigation device, start processing is started when the vehicle engine is started, and each function of the device is initialized and started while displaying an opening image and a safety confirmation message (PL Caution: Product Liability Caption) on the display. Is known (for example, refer to Patent Document 1 below). In the following Patent Document 1, when the navigation device performs the activation process, the opening image or the generated image is displayed on the display so that the user is not aware of the time required for the activation process. Specifically, it is considered to generate an image using cumulative travel distance information, fuel consumption information, and the like.

JP 2004-145120 A

  However, in the above-described conventional technology, the user cannot acquire information necessary for starting the vehicle until the navigation device finishes the startup process and finishes reading the position and map data of the host vehicle. In recent navigation devices, the time required for the startup process has increased due to the increase in functionality. For this reason, when the navigation apparatus acquires information necessary for starting after finishing the start-up process, the time from the start of the engine of the vehicle to the start is further increased. As a result, the time for waiting the vehicle in an idling state becomes longer, and there is a problem that an increase in fuel consumption rate or an environmental load is a concern.

  In order to solve the above-described problems and achieve the object, the navigation device according to the first aspect of the present invention is a navigation device mounted on a moving body, and is photographed by photographing means for photographing the periphery of the moving body. Video acquisition means for acquiring video, display means for displaying information to be provided to a user, and the video acquired by the video acquisition means at least until the startup processing of the navigation device is completed when the navigation device is started up Display control means for displaying on the display means.

  The display control method according to the invention of claim 9 is a display control method in a navigation device mounted on a mobile body, and a video acquisition step of acquiring a video shot by a shooting means for shooting the periphery of the mobile body. And a display control step of displaying the video acquired by the video acquisition step on a display means for displaying information to be provided to a user at least until the startup processing of the navigation device is completed when the navigation device is started. , Including.

  A navigation program according to the invention of claim 10 causes a computer to execute the display control method according to claim 9.

  A recording medium according to an eleventh aspect of the invention is characterized in that the navigation program according to the tenth aspect is recorded in a computer-readable state.

It is a block diagram which shows the functional structure of the navigation apparatus concerning embodiment. It is a flowchart which shows the procedure of the video display process by a navigation apparatus. It is a block diagram which shows the hardware constitutions of a navigation apparatus. It is a flowchart which shows the procedure of the memory | storage process at the time of completion | finish of a navigation apparatus. It is a flowchart which shows the procedure of the video display process at the time of starting of a navigation apparatus. It is explanatory drawing which shows an example of the display screen displayed on the display of a navigation apparatus. It is explanatory drawing which shows an example of the display screen displayed on the display of a navigation apparatus.

  Exemplary embodiments of a navigation device, a display control method, a navigation program, and a recording medium according to the present invention will be explained below in detail with reference to the accompanying drawings.

(Embodiment)
FIG. 1 is a block diagram illustrating a functional configuration of the navigation device according to the embodiment. The navigation device 100 according to the embodiment is mounted on a moving body, and displays predetermined information when activated. The moving body is a vehicle such as an automobile. The predetermined information is, for example, an image around the moving body. The navigation device 100 includes a display unit 101, a video acquisition unit 102, a display control unit 103, a shooting control unit 104, a storage unit 105, and a detection unit 106.

  The display unit 101 displays information provided to the user. The information provided to the user is, for example, information that improves the convenience of the user or information that supports comfortable driving. Information that improves user convenience includes, for example, position information of a moving body calculated using GPS information received from GPS satellites, map data around the position information, and terrestrial waves received from a predetermined radio station. TV broadcast video. Specifically, the display unit 101 is a display, for example.

  The imaging unit 110 captures the periphery of the moving body. The periphery of the moving body is, for example, a space outside or inside the moving body. Specifically, the imaging unit 110 is, for example, a camera. More specifically, the photographing unit 110 is attached to the outside of the moving body, for example, a mirror (Side Mirror) for confirming the rear or side, or attached to the driver's seat of the moving body and confirms the rear side. For example, a mirror (rearview mirror), a camera mounted on a rear window of the moving body (rear window), or the like (an outside camera or an in-vehicle camera). A plurality of imaging units 110 may be installed.

  The video acquisition unit 102 acquires the video shot by the shooting unit 110. The video acquisition unit 102 may acquire a plurality of videos captured by the plurality of imaging units 110. In addition, the video acquisition unit 102 may acquire a video only during the startup process of the navigation device 100, or may continue to acquire a video even while the mobile object is traveling, for example.

  The display control unit 103 displays the video acquired by the video acquisition unit 102 on the display unit 101 at least until the startup processing of the navigation device 100 ends when the navigation device 100 starts up. The activation process of the navigation device 100 is a process for initializing each function of the navigation device 100 and preparing for enabling the user to operate the navigation device 100. Each function of the navigation device 100 is a function for supporting the user such as a route guidance function, a content reproduction function, and a facility search function so that the user can confirm information provided from the navigation device 100. .

  For example, the display control unit 103 displays the video around the moving object on the display unit 101 at least until the activation process of the navigation device 100 is completed. After the activation processing of the navigation device 100 is completed, the display control unit 103 may continuously display the video around the moving body on the display unit 101, or may display map data or the like instead of the video around the moving body. May be displayed.

  Further, the display control unit 103 may display on the display unit 101 a video in at least one direction among a plurality of videos shot by the shooting unit 110. In this case, for example, the display control unit 103 divides the display area of the display unit 101 and simultaneously displays videos on both sides of the moving body on the display unit 101. The display control unit 103 may combine a plurality of omnidirectional images captured by the imaging unit 110 and display a pseudo image as if captured from above the moving body on the display unit 101.

  For example, when starting the moving body, the display control unit 103 may display an image on the display unit 101 that enables the user to confirm the safety around the moving body. The video that enables the safety confirmation around the moving body is, for example, a video that can confirm a position that is a blind spot of the user. The position that becomes the blind spot of the user is a position that cannot be seen from the driver's seat by being obstructed by the vehicle body or the like, for example, around the moving body or at a position obliquely behind the driver's seat.

  The shooting control unit 104 controls the shooting direction of the shooting unit 110. In addition, the imaging control unit 104 may cause the plurality of imaging units 110 to capture a plurality of videos having different imaging directions.

  The imaging control unit 104 controls the imaging direction of the imaging unit 110 based on information (movement status information) regarding the moving status of the moving object stored by the storage unit 105 when the moving object was stopped last time. The moving state information of the moving body is, for example, information related to the moving direction of the moving body (traveling direction information) and information for specifying the position of the moving body (position information). The traveling direction information of the moving body is information that specifies whether the moving body has moved forward or just moved forward just before stopping. The position information of the moving body is information that specifies whether the moving body immediately before the stop is located on the road or other than the road, for example.

  When the traveling direction information of the moving body stored in the storage unit 105 is information indicating that the moving body has advanced immediately before stopping, the imaging control unit 104 captures an image of the rear of the moving body by the imaging unit 110. Let me shoot. In addition, when the traveling direction information of the moving body stored in the storage unit 105 is information indicating that the moving body has moved backward just before stopping, the imaging control unit 104 captures an image in front of the moving body. Let the unit 110 shoot. Further, the imaging control unit 104 may cause the imaging unit 110 to take an image in which the direction of the blind spot from the user is an imaging direction based on other elements such as the shape of the moving body.

  When the position information of the moving object stored in the storage unit 105 is information indicating that “the moving object immediately before the stop is located on the road”, the imaging control unit 104 displays an image of the side of the moving object. The photographing unit 110 is caused to photograph. For example, when the moving body is located in a parking area on a road, the photographing control unit 104 causes the photographing unit 110 to capture an image of the side of the moving body.

  The storage unit 105 stores the movement status information of the moving object detected by the detection unit 106. Specifically, the storage unit 105 is a non-volatile memory, a volatile memory to which power is supplied from a storage battery mounted on a moving body, or the like. Specifically, for example, when the moving object moves backward and stops in the parking area of the parking lot, the storage unit 105 stores a variable indicating that the moving object has moved backward and stopped as the traveling direction information of the moving object. To do. In addition, the storage unit 105 stores, for example, a variable indicating that “the moving body has stopped on the road” as the position information of the moving body. Further, the storage unit 105 may store information related to a shooting direction that is shot by the shooting unit 110 when the navigation device 100 is activated next time.

  The detection unit 106 detects a movement state immediately before the moving body is stopped. The detection unit 106 detects, for example, the traveling direction of the moving body immediately before stopping as the moving state. In addition, the detection unit 106 detects the position of the moving body immediately before the stop as the movement state. The detection unit 106 detects the traveling direction based on, for example, the position of the shift gear of the moving body immediately before stopping. Specifically, for example, when the shift gear of the moving body immediately before the stop is positioned in the “back gear”, the detecting unit 106 detects information that the moving body has moved backward and stopped.

  Next, video display processing by the navigation device 100 will be described. FIG. 2 is a flowchart showing a procedure of video display processing by the navigation device. In the flowchart of FIG. 2, the navigation device 100 starts the activation process when supplied with power (step S <b> 201). Next, the navigation apparatus 100 acquires the movement status information of the moving body stored in the storage unit 105 by the imaging control unit 104 (step S202).

  Subsequently, the navigation apparatus 100 acquires a video around the moving body by the video acquisition unit 102 (step S203). Then, the navigation device 100 displays the video acquired by the video acquisition unit 102 by the display control unit 103 on the display unit 101 (step S204).

  Subsequently, the navigation device 100 determines whether or not the activation process of the navigation device 100 is completed (step S205), and the video acquired by the video acquisition unit 102 is at least until the activation process of the navigation device 100 is completed. The display continues on the display unit 101 (step S205: No loop). If it is determined in step S205 that the activation processing of the navigation device 100 has been completed (step S205: Yes), the navigation device 100 displays map information and the like on the display unit 101 to perform route guidance and the like (step S205). S206). In step S206, the navigation apparatus 100 may continue to display the video acquired by the video acquisition unit 102 on the display unit 101. Thus, the process according to this flowchart is terminated.

  As described above, the navigation device 100 according to the embodiment is acquired based on the movement status information immediately before the stop of the moving object at least until the activation process is completed at least after the navigation device 100 is turned on. The displayed video is displayed on the display unit 101. For this reason, the user can acquire information necessary for starting the moving body without waiting for the end of the activation process of the navigation device 100. Thereby, the time from the engine start of the moving body to the start can be shortened, and the time for waiting the moving body in the idling state can be shortened. Therefore, the fuel consumption rate can be reduced. In addition, the load on the environment can be reduced.

  In addition, the navigation device 100 displays on the display unit 101 an image in a direction in which the moving body is expected to travel when starting. Thereby, the user can check the traveling direction of the moving body by checking the display unit 101. In addition, the navigation device 100 displays an image in a direction that is a blind spot of the user on the display unit 101. Thereby, the user can confirm the part which cannot be visually recognized by confirming the display part 101. FIG. Thereby, the user can start a moving body safely.

Examples of the present invention will be described below. In the present embodiment, an example in which the navigation device 100 of the present invention is implemented by a navigation device mounted on a vehicle will be described.

(Hardware configuration of navigation device 300)
The hardware configuration of the navigation device 300 will be described with reference to FIG. FIG. 3 is a block diagram illustrating a hardware configuration of the navigation device 300. In FIG. 3, a navigation device 300 includes a CPU 301, a ROM 302, a RAM 303, a recording / reproducing unit 304 for recording / reproducing various data, a recording unit 305 for recording various data, an audio I / F (interface) 306, a microphone 307, and a speaker 308. , An input device 309, a video I / F 310, a display 311, a camera 312, a communication I / F 313, a GPS unit 314, and a vehicle information input unit 315. Each component 301 to 315 is connected by a bus 320.

  The CPU 301 governs overall control of the navigation device 300. The ROM 302 records programs such as a boot program and a data display program. The RAM 303 is used as a work area for the CPU 301. That is, the CPU 301 controls the entire navigation device 300 by executing various programs recorded in the ROM 302 while using the RAM 303 as a work area.

  The recording / reproducing unit 304 controls reading / writing of data with respect to the recording unit 305 according to the control of the CPU 301. The recording unit 305 records data written under the control of the recording / reproducing unit 304. As the recording / reproducing unit 304, for example, a magnetic disk drive or optical disk drive, and as the recording unit 305, for example, HD (hard disk), FD (flexible disk), flash memory, MO, SSD (Solid State Disk), memory card, etc. Can be used.

  Examples of the information recorded in the recording unit 305 include map data and movement status data related to the movement status immediately before the moving body is stopped. The map data is used for a route search by the user after the activation processing of the navigation device is completed, and includes background data representing features (features) such as buildings, rivers, and the ground surface, road shape data representing road shapes, and the like. It is composed of a plurality of data files divided by district. The movement status data is constituted by a data file including traveling direction data representing the traveling direction immediately before the moving body stops and position data representing whether the moving body was located on the road immediately before stopping. In this embodiment, map data is recorded in the recording unit 305. However, necessary map data may be received via the communication I / F 313 and used for various processes.

  The audio I / F 306 is connected to a microphone 307 for audio input and a speaker 308 for audio output. The audio I / F 306 D / A converts audio data instructed to be reproduced and outputs the audio data from the speaker 308 as audio.

  The input device 309 is configured by a remote controller, a keyboard, a touch panel, and the like provided with a plurality of keys for inputting characters, numerical values, various instructions, and the like. The input device 309 may be realized by any one of a remote controller, a keyboard, and a touch panel, or may be realized by a plurality of forms.

  The video I / F 310 is connected to the display 311 and the camera 312. Specifically, the video I / F 310 is output from, for example, a graphic controller that controls the display 311, a buffer memory such as a VRAM (Video RAM) that temporarily records image information that can be displayed immediately, and a graphic controller. And a control IC for controlling the display 311 based on the image data.

  The display 311 displays map data, icons, cursors, menus, windows, or various data such as characters and images. As the display 311, for example, a TFT liquid crystal display, an organic EL display, or the like can be used.

  The camera 312 captures images inside or outside the vehicle on which the navigation device 300 is mounted. The video imaged by the camera 312 may be either a still image or a moving image. The video imaged by the camera 312 is recorded in the recording unit 305 or the like via the video I / F 310 or displayed on the display 311.

  The communication I / F 313 is connected to a network via wireless and functions as an interface between the navigation device 300 and the CPU 301. Communication networks that function as networks include public line networks, mobile phone networks, DSRC (Dedicated Short Range Communication), LANs, WANs, and the like. The communication I / F 313 is, for example, a public line connection module, an ETC (non-stop automatic fee payment system) unit, an FM tuner, a VICS (Vehicle Information and Communication System) / beacon receiver, or the like.

  The GPS unit 314 receives radio waves from GPS satellites and outputs information indicating the current location of the vehicle on which the navigation device 300 is mounted. The GPS unit 314 includes various sensors such as a speed sensor, an acceleration sensor, and an angular velocity sensor, and outputs information for determining the position and behavior of the vehicle. The output information of the GPS unit 314 is used when the CPU 301 calculates the current location of the navigation device 300 and calculates the amount of change in speed and direction. The information indicating the current location is information for specifying one point on the map data such as latitude / longitude and altitude.

  The vehicle information input unit 315 is connected to a shift gear and various meters mounted on the vehicle. Information on the position of the shift gear and information on the traveling speed of the vehicle are input to the vehicle information input unit 315.

  The display unit 101, the video acquisition unit 102, the display control unit 103, the imaging control unit 104, the storage unit 105, the detection unit 106, and the imaging unit 110 attached to the vehicle of the navigation device 100 illustrated in FIG. The CPU 301 executes a predetermined program using programs and data recorded in the ROM 302, the RAM 303, the recording unit 305, and the like in the device 300, and realizes the function by controlling each unit in the navigation device 300.

(Video display processing in the navigation device 300)
Next, details of the video display processing in the navigation device 300 will be described. As described above, in the navigation apparatus 300 mounted on the vehicle, the navigation apparatus 300 safely starts the vehicle without waiting for the end of the activation process of the navigation apparatus 300 after the navigation apparatus 300 is powered on. In order to be able to do so, an image of the surroundings of the vehicle is displayed on the display 311 of the navigation device 300 together with the start of the engine of the vehicle based on the movement status information of the vehicle at the previous stop. Hereinafter, the details of the video display process for displaying the video around the vehicle based on the movement status information of the vehicle at the previous stop will be described.

  FIG. 4 is a flowchart showing the procedure of the storage process at the end of the navigation device. The process shown in FIG. 4 is a process performed after the vehicle starts operating until the vehicle engine stops. In the flowchart of FIG. 4, the navigation device 300 first continues to determine whether or not the vehicle is just before stopping through the vehicle information input unit 315 until just before the vehicle stops (step S401: No loop). . The determination that the vehicle is about to stop may be made based on information for specifying the position of the shift gear, the amount of change in travel speed, the position of the vehicle, or a combination thereof. The position of the vehicle in step S401 includes information indicating that the vehicle is located at a position where the vehicle has a high probability of stopping, for example, the vehicle is located outside the road.

  Next, when it is determined in step S401 that the vehicle is just before stopping (step S401: Yes), the navigation device 300 detects the movement status of the vehicle via the vehicle information input unit 315 or the GPS unit 314 ( Step S402). The movement status of the vehicle includes information for specifying the position of the vehicle, the traveling direction of the vehicle, and the like. The position of the vehicle in step S402 includes information for specifying whether or not the vehicle was positioned on the road immediately before stopping. Further, the traveling direction of the vehicle includes information for specifying that the vehicle was moving forward or backward immediately before stopping.

  Next, the navigation device 300 stores the information (movement status information) related to the movement status of the vehicle detected in step S402 in the storage device of the navigation device 300 (step S403), and ends the processing according to this flowchart. In step S403, the navigation device 300 may store only the vehicle movement status information immediately before the vehicle engine stops in the storage device, or each time the vehicle stops due to a signal or the like, the vehicle movement status information is stored. It may be stored in the storage device and the previous movement status information may be rewritten. Further, after detecting that the engine key of the vehicle is turned off, the movement status information of the vehicle may be stored in the storage device by a standby power source or the like.

  FIG. 5 is a flowchart showing the procedure of the video display process when the navigation apparatus is activated. The processing shown in FIG. 5 is processing performed in the processing shown in steps S202 and S203 of FIG. In the flowchart of FIG. 5, the navigation device 300 first acquires information on the vehicle position (position information) stored in the storage device of the navigation device 300 as the movement status information of the vehicle (step S501). The vehicle position information stored in the storage device is the vehicle position information at the previous stop.

  Next, the navigation apparatus 300 determines whether or not the vehicle was located on the road at the previous stop (step S502). In step S502, when it is determined that the vehicle is not located on the road at the previous stop (step S502: No), the navigation device 300 stores information related to the traveling direction of the vehicle stored in the storage device of the navigation device 300 ( Traveling direction information) is acquired as vehicle movement status information (step S503). The traveling direction information of the vehicle stored in the storage device is traveling direction information of the vehicle at the previous stop.

  Next, the navigation apparatus 300 determines whether or not the traveling direction of the vehicle at the previous stop is backward (step S504). If it is determined in step S504 that the traveling direction of the vehicle at the previous stop is backward (step S504: Yes), the shooting direction of the camera 312 is set to the front of the vehicle (step S505). Then, the navigation apparatus 300 acquires a video in front of the vehicle photographed by the camera 312 via the video I / F 310 (step S506), and displays this video on the display 311 (step S507).

  On the other hand, when it is determined in step S504 that the traveling direction of the vehicle at the previous stop is not backward (step S504: No), the navigation apparatus 300 sets the shooting direction of the camera 312 to the rear of the vehicle (step S508). ). And the navigation apparatus 300 acquires the image | video of the back of the vehicle image | photographed with the camera 312 via image | video I / F310 (step S509), and progresses to step S507.

  In Step S502, when it is determined that the vehicle is located on the road at the previous stop (Step S502: Yes), the navigation apparatus 300 sets the shooting direction of the camera 312 to the side of the vehicle (Step S502). S510). And the navigation apparatus 300 acquires the image | video of the side of the vehicle which the camera 312 image | photographed via image | video I / F310 (step S511), and progresses to step S507. Thereby, the process by this flowchart is complete | finished.

  In the flowchart of FIG. 5, the shooting direction of the camera 312 is set based on the position and traveling direction of the vehicle, but video display may be performed in consideration of other factors. For example, in step S505, when there is a part that becomes a blind spot especially from the user depending on the vehicle shape or the like, the shooting direction of the camera 312 may be set to an oblique front of the vehicle. Similarly, in steps S509 and S511, the shooting direction of the camera 312 may be set to an oblique rear side of the vehicle, a side in a direction close to the front side, or the like.

  Next, information displayed on the display by the above-described video display process will be described. 6 and 7 are explanatory diagrams illustrating an example of a display screen displayed on the display of the navigation device. As shown in FIG. 6, for example, the display 600 displays images 610 and 620 obliquely forward of the vehicle. This is an example of information displayed on the display when the shooting direction of the camera 312 is set in front of the vehicle (including obliquely forward). That is, the process shown in step S506 in FIG. 5 is performed. Further, as shown in FIG. 7, the display 700 displays map data indicating the current position of the vehicle. This is an example of information displayed on the display after the startup process of the navigation device 300 is completed.

  Specifically, the navigation device 300 displays the images 610, 620 and the like shown on the display 600 after the power is turned on. Thereafter, after the startup process of the navigation device 300 is completed, the navigation device 300 may continuously display the images 610 and 620 shown on the display 600 or may display the image 710 shown on the display 700.

  As described above, the navigation device 300 according to the embodiment is acquired based on the movement status information immediately before the stop of the previous vehicle at least until the activation process is completed after the navigation device 300 is turned on. The displayed video is displayed on the display 311. For this reason, the user can acquire information necessary for starting the vehicle without waiting for the end of the activation process of the navigation device 300. Thus, the vehicle can be started safely, the time from the start of the engine of the vehicle to the start can be shortened, and the time for waiting the vehicle in the idling state can be shortened. Therefore, the fuel consumption rate can be reduced. In addition, the load on the environment can be reduced.

  In addition, the navigation device 300 displays an image of the traveling direction of the vehicle on the display unit 101. Thereby, the user can confirm the traveling direction of the vehicle by confirming the display 311. In addition, the navigation device 300 displays an image in a direction that becomes a blind spot of the user on the display 311. Thereby, the user can confirm the part which cannot be visually recognized by confirming the display 311. Thereby, the user can start a vehicle safely.

  The display control method described in this embodiment can be realized by executing a program prepared in advance on a computer such as a personal computer or a workstation. This program is recorded on a computer-readable recording medium such as a hard disk, a flexible disk, a CD-ROM, an MO, and a DVD, and is executed by being read from the recording medium by the computer. The program may be a transmission medium that can be distributed via a network such as the Internet.

DESCRIPTION OF SYMBOLS 100 Navigation apparatus 101 Display part 102 Image | video acquisition part 103 Display control part 104 Shooting control part 105 Storage part 106 Detection part 110 Shooting part

Claims (11)

A navigation device mounted on a moving body,
Video acquisition means for acquiring video captured by imaging means for imaging the periphery of the moving body;
Display means for displaying information to be provided to the user;
Display control means for displaying the video acquired by the video acquisition means on the display means at least until the startup processing of the navigation device is completed at the time of startup of the navigation device;
A navigation device comprising: Shooting control means for controlling the shooting direction of the shooting means;
Detecting means for detecting a moving state immediately before the moving body is stopped;
Storage means for storing information relating to the movement status detected by the detection means,
2. The navigation according to claim 1, wherein the photographing control unit controls a photographing direction of the photographing unit based on information on the movement state stored by the storage unit when the moving body was stopped last time. apparatus.   The navigation device according to claim 2, wherein the detection unit detects a traveling direction of the moving body immediately before stopping as information related to the movement state.   The said imaging | photography control means makes the said imaging | photography means image | photograph the back image | video of the said mobile body, when the advancing direction of the said mobile body memorize | stored by the said memory | storage means is advancing. Navigation device.   The said imaging | photography control means makes the said imaging | photography means image | photograph the image ahead of the said mobile body, when the advancing direction of the said mobile body memorize | stored by the said memory | storage means is reverse. Navigation device. The detection means detects the position of the moving body immediately before the stop as information on the movement status,
The imaging control unit causes the imaging unit to capture an image of a side of the moving body when the position of the moving body stored on the storage unit is on a road. Navigation device. The photographing control means causes the photographing means to photograph a plurality of videos having different photographing directions,
The navigation apparatus according to claim 2, wherein the display control unit displays an image in at least one direction among the plurality of images captured by the imaging unit on the display unit.   The navigation device according to claim 3, wherein the detection unit detects the traveling direction based on a position of a shift gear of the moving body immediately before stopping. A display control method in a navigation device mounted on a moving body,
A video acquisition step of acquiring a video imaged by an imaging means for imaging the periphery of the moving body;
A display control step of displaying the video acquired by the video acquisition step on display means for displaying information to be provided to a user, at least until the navigation device startup process ends at the time of startup of the navigation device;
The display control method characterized by including.   A navigation program causing a computer to execute the display control method according to claim 9.   11. A computer-readable recording medium on which the navigation program according to claim 10 is recorded.

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