JP5357578B2 - Car navigation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an on-vehicle navigation device capable of keeping in a closed state or shifting thereto, a movable nose having a diplay screen at a guide point of an intersection or the like. <P>SOLUTION: The on-vehicle navigation device 100 includes a display means 7 arranged on the movable nose 21, a map data storage means 1a for storing map data including information of the guide point, a one's own vehicle position detection means 3 for detecting a present position of the own vehicle, a nose opening/closing detection means 43 for detecting the open/closed state of the movable nose 21, and a control means 12 for detecting a distance from the present position of the own vehicle to the guide point. When the present position of the own vehicle is in a range of a prescribed distance to the guide point, and the movable nose 21 is in the open state, the control means 12 shifts the movable nose 21 from the open state into the closed state, or displays an alarm message for urging shift from the open state into the closed state on a screen of the display means 7. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a vehicle-mounted navigation device including a movable nose type display device in which a device front portion having a media insertion / exhaust port can be opened and closed with a movable nose having a display screen such as a liquid crystal monitor.

  Conventional typical vehicle-mounted navigation devices include a control device such as a CPU that controls all processes related to navigation, a storage device such as a DVD (Digital Versatile Disk) -ROM or an IC memory card that stores map data in advance, It has a display device, a GPS (Global Positioning System) receiver, a detection device for detecting the current position and current direction of the vehicle, such as a gyroscope and a vehicle speed sensor. Then, the control device reads out map data including the current position of the vehicle from the storage device, displays a map image around the vehicle position on the display device screen based on the map data, and indicates the current position of the host vehicle. The vehicle position mark to be displayed is superimposed on the map image, the map image is scrolled according to the movement of the vehicle, the map image is fixed on the screen and the vehicle position mark is moved, and where the vehicle is currently located. You can see at a glance whether you are driving.

  In-vehicle navigation devices are usually equipped with a function (route guidance function) that guides the user so that the user can easily travel on the road without making a mistake. According to this route guidance function, a simulation such as a horizontal search method or a Dijkstra method is performed by the control device using the map data to find an optimal route from the departure point (typically the current position of the vehicle) to the destination. The search is performed by calculation, the searched route is stored as a guidance route, and the guidance route can be distinguished from other roads on the map image while traveling (for example, by changing the color or changing the line width). When the vehicle approaches a predetermined distance to the intersection where the course should be changed on the guide route, the guide map of the intersection (enlarged view of the intersection, progression at the intersection) By displaying an arrow indicating the direction, the distance to the intersection, the name of the intersection, etc., the user can know which road to travel and in which direction to proceed at the intersection. It has become.

  In recent years, such an in-vehicle navigation device is combined with a CD deck for playing music CDs, a DVD deck for playing DVDs, an HDD (hard disk drive) for storing map data and music data recorded from CDs, and the like. Audio / visual / navigation / communication integrated devices stored in the market are becoming popular.

  In order to secure a wide display space, this integrated machine is provided with an operation panel such as a key and a display unit that can rotate freely, and the operation panel (referred to as a movable nose) hides a medium insertion slot such as a DVD or CD (Compact Disc). I have to. Normally, the movable nose is held in a closed position in an upright position so that the screen on which map information is displayed is easy to see. When inserting or removing media such as DVDs or CDs, open the movable nose and open the media insertion / exhaust port. I try to expose it.

  In such an integrated device, as a technology for controlling operations such as guidance display by a navigation function and operations related to functions other than navigation, Patent Document 1 discloses music data in storage means of a navigation device. Describes a device that gives priority to route guidance when route guidance is performed, and notifies that music data has been saved when the route guidance is not performed by discharging music media or the like.

JP 2007-035110 A

  In the movable nose type display device having the display screen on the movable nose described above, even when the guidance screen by the navigation function is being displayed, it is usually switched to TV viewing by a user's operation, a CD or the like. It is possible to insert and eject discs. For example, when a disc is inserted or ejected, the movable nose is opened, making it difficult to see the guidance screen by the navigation function. For this reason, a warning message for calling attention is displayed on the display screen when the movable nose is opened, and when there is route guidance, voice guidance is provided.

  However, it is difficult to make a judgment only by voice guidance at a point where a guidance point has multiple branches such as a five-way road, and the guidance function of the navigation device cannot be used effectively.

  Further, the user does not always know the existence of all the guidance points. For this reason, it is assumed that route guidance starts when a disc such as a CD or a DVD is being inserted or ejected, and the movable nose is closed in order to view the guidance display. In this case, there is a possibility that the driver cannot concentrate on driving and may hinder safe driving.

  The present invention has been made in view of the problems of the prior art, and provides an in-vehicle navigation device capable of holding or shifting a movable nose having a display screen in a closed state at a guide point such as an intersection. Objective.

In order to solve the above-described problems of the prior art, according to one aspect of the present invention, display means arranged on a movable nose, map data storage means in which map data including information on guide points is stored, Own vehicle position detecting means for detecting the current position of the own vehicle, nose opening / closing detecting means for detecting the open / closed state of the movable nose, and control means for detecting the distance from the current position of the own vehicle to the guide point. And when the current position of the host vehicle is within a predetermined distance to the guide point and the guide point is being guided, and the movable nose is in an open state. , the vehicle navigation apparatus, characterized in that to shift the insert and the movable nose media in which the movable nose is placed in the medium insertion opening provided housing in the medium insertion slot closed It is subjected.

  In the in-vehicle navigation device according to the above aspect, the control means is located at a position where the current position of the host vehicle is within the predetermined distance range and guidance of the guide point is performed, and the movable nose is When in the open state, a warning message to the effect that the movable nose is shifted to the closed state may be output to the screen of the display means, and the control means is configured such that the current position of the host vehicle is the predetermined distance. When a signal indicating that the movable nose in the closed state is in an open state is received, a warning message to limit the operation is received. The information may be output to the screen of the display means, and further provided with a voice output means, and the control means displays the warning message on the screen of the display means and the message. The chromatography di may be caused to the sound output via the sound output means.

  Further, in the in-vehicle navigation device according to the above aspect, the control means is located at a position where the current position of the host vehicle is within the predetermined distance range and guidance of the guide point is performed, and the movable unit When the nose is in the open state, the medium placed in the medium insertion port of the housing provided with the movable nose may be inserted into the medium insertion port to shift the nose to the closed state. The control means may shift the state of the movable nose to the state before passing through the guide point after passing through the guide point.

  The vehicle-mounted navigation device according to the present invention outputs a warning that the movable nose is shifted to the closed state at the guide point according to the distance of the vehicle position to the guide point and the open / close state of the movable nose. Or forcibly closing the movable nose. As a result, it is possible to confirm the guidance display in an easy-to-see state at the guidance point, and it is possible to contribute to safe driving.

It is a block diagram which shows the structure of the vehicle-mounted navigation apparatus which concerns on this embodiment. It is a figure which shows the movable nose by which a display apparatus is arrange | positioned. It is a figure explaining the opening / closing process of the movable nose during vehicle travel. It is a flowchart which shows an example of the opening / closing process of the movable nose before guidance in a guidance point. It is a flowchart which shows an example of the opening / closing process of the movable nose during guidance in a guidance point. It is a flowchart which shows an example of the opening / closing process of a movable nose after passing a guidance point.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

(Configuration of in-vehicle navigation system)
FIG. 1 is a block diagram showing a configuration of an in-vehicle navigation device 100 according to an embodiment of the present invention.

  In the figure, 1 is a DVD-ROM drive, and 1a is a storage medium in which guide data such as map data and other guide points are stored. In the present embodiment, the DVD-ROM 1a is used as a storage medium for storing such data, but a hard disk or other storage medium may be used. The map stored here is divided into longitude and latitude widths of appropriate sizes according to each scale level such as 1/1500, 1/25000, 1 / 50,000, 1/10000, etc. Roads, buildings, facilities, and other various properties included in are stored as a coordinate set of points (nodes) expressed in longitude and latitude. Map data includes (1) a road layer composed of a road list, a node table, an intersection configuration node list, etc., (2) a background layer for displaying roads, buildings, parks, rivers, etc. on a map image, (3) It consists of a character / symbol layer or the like for displaying a letter indicating a administrative division name such as a municipality name, a road name, an intersection name, or a map symbol.

  The DVD-ROM 1a stores road data representing the shape of the road used for map matching. This road data is composed of a shape node and a link between shape nodes having different distances between nodes according to the shape of the road.

  An operation unit 2 is provided with operation buttons and the like for operating the navigation apparatus body 10. In this embodiment, the operation unit 2 includes a remote control transmitter, and the user can also operate the navigation apparatus body 10 with the remote control transmitter at hand.

  Also, 3 receives GPS signals sent from a plurality of GPS satellites and generates and outputs GPS data such as longitude, latitude, PDOP (Position DOP) value and HDOP (Horizontal DOP) value of the current position of the vehicle. A GPS receiver is shown. Reference numeral 4 denotes a self-contained navigation sensor. The self-contained navigation sensor 4 is composed of an angle sensor such as a gyro that detects a vehicle rotation angle, and a travel distance sensor that generates a pulse at every constant travel distance.

  In addition, 5 is a communication device such as an in-vehicle telephone for communicating with various service centers, and 6 is a VICS reception for receiving VICS (registered trademark) (road traffic information communication system) information transmitted from a radio wave beacon or an optical beacon. Indicates the machine. These beacons are installed on the roadside and connected to police stations, road managers and integration centers to provide information on traffic jams in the vicinity.

  Reference numeral 7 denotes a display unit such as a liquid crystal panel. The navigation device body 10 displays a map around the current position of the vehicle on the display unit 7, a guidance route from the departure point to the destination, a vehicle mark, Other guidance information is displayed. The display unit 7 is provided with a touch panel on the screen, and is configured with various buttons paired with the display content of the display screen. The touch panel serves as an input device for selecting a menu or the like indicated by these various buttons. Reference numeral 8 denotes a speaker for providing guidance information to the user by voice.

  The display unit 7 is disposed in front of the movable nose 21, and the display screen becomes horizontal or stands up depending on the tilted state of the movable nose 21.

  A movable nose drive unit 42 drives the movable nose 21 so as to open and close the movable nose 21 by operating a movable nose opening / closing button (not shown). The movable nose drive unit 42 has a nose opening / closing detection unit 43 that detects the open / closed state of the movable nose 21. The nose opening / closing detection unit 43 detects that the movable nose opening / closing button has been pressed, and determines whether the movable nose 21 is in an open state or a closed state.

  FIG. 2 is an example of an in-vehicle device provided with a movable nose, FIG. 2 (a) is a side view thereof, FIG. 2 (b) is a perspective view with the movable nose closed, and FIG. The perspective view of the state which opened the movable nose is shown.

  The movable nose 21 is arranged in front of a front panel (escussion) 25 on the front of an audio / visual / navigation / communication integrated device main body 24 (hereinafter also simply referred to as an integrated device) in which a drive device such as a CD or DVD is accommodated. Has been. The movable nose 21 is selectable between a standing state and a tilted state. The front panel 25 is provided with a media insertion slot (not shown) for inserting and ejecting media such as CDs and DVDs. A display unit 22 and operation keys are disposed on the front surface of the movable nose 21, and the display unit 22 is a touch panel display. The movable nose 21 is connected to the slider 23, and becomes a standing state or a tilted state according to the position of the slider 23.

  FIG. 2B shows a state in which the slider 23 is pulled into the retracted position inside the integrated machine 24, and the movable nose 21 is held in an upright state. Therefore, the media insertion opening of the front panel 25 is covered with the movable nose 21.

  The slider 23 is advanced from the standing state of the movable nose 21 as shown in FIG. 2B, the lower part of the movable nose 21 is advanced together with the slider 23, the upper part of the movable nose 21 is lowered, and the movable nose 21 gradually tilts as a whole. I will do it.

  FIG. 2C shows a state where the movable nose 21 is tilted to the maximum angle. When tilted to this state, the media insertion slot of the front panel 25 is exposed, and media such as CDs and DVDs can be inserted into and ejected from this insertion slot.

  The navigation device body 10 is composed of the following. Reference numeral 11 denotes a buffer memory that temporarily stores map data read from the DVD-ROM 1 a via the DVD-ROM drive 1.

  Reference numeral 12 denotes a control unit constituted by a microcomputer. The control unit 12 has a built-in navigation program, and calculates the current position of the vehicle based on a signal output from the GPS receiver 3 or a signal output from the self-contained navigation sensor 4 according to the program. Or the map data to be displayed is read from the DVD-ROM 1a to the buffer memory 11 via the DVD-ROM drive 1 or from the departure place under the search conditions set using the map data read to the buffer memory 11. Various processes such as searching for a guidance route to the destination are executed. Further, as will be described later, the distance from the vehicle position to the guide point is detected, and the opening operation of the movable nose is restricted according to the distance, or the open movable nose is forcibly closed. In addition, the state of the movable nose before passing through the guide point is acquired and stored in the storage unit 17, or the mobile nose is returned to the original state before passing through after passing through the guide point.

  13 is a map drawing unit for generating a map image using the map data read out to the buffer memory 11, and 14 is for generating various menu screens (operation screens) and various marks such as vehicle position marks and cursors according to the operation status. This is the operation screen / mark generator.

  Reference numeral 15 denotes a guide route storage unit that stores the guide route searched by the control unit 12, and 16 denotes a guide route drawing unit that draws the guide route. The guidance route storage unit 15 stores all the nodes of the guidance route searched by the control unit 12 from the departure point to the destination. When displaying the map, the guide route drawing unit 16 reads the guide route information from the guide route storage unit 15 and draws the guide route with a color and line width different from those of other roads.

  Reference numeral 17 denotes a storage unit composed of a hard disk or the like, which stores data indicating the state of the movable nose, information on the road on which the vehicle is traveling, and the like.

  An audio output unit 18 supplies an audio signal to the speaker 8 based on a signal from the control unit 12. Reference numeral 19 denotes an image composition unit, which overlays the map image drawn by the map drawing unit 13 with various marks and operation screens generated by the operation screen / mark generation unit 14, the guide route drawn by the guide route drawing unit 22, and the like. Display on the display unit 7.

  In the in-vehicle navigation device 100 configured as described above, when the guide point approaches, the control unit 12 detects the distance from the vehicle position to the guide point, detects the open / close state of the movable nose, and opens it. A warning is output to close the movable nose in the state, or the movable nose in the open state is forcibly closed.

  Hereinafter, the opening / closing process of the movable nose during traveling of the vehicle will be described with reference to FIG.

  FIG. 3A shows a state in which the vehicle indicated by the host vehicle position CM approaches the guidance point 31 (intersection in FIG. 3) and reaches a predetermined distance X1 from the host vehicle position to the intersection 31. . At this time, when the movable nose 21 provided in the integrated machine 24 is in the closed state, even if there is an instruction to open the movable nose 21 for replacement of a CD disk, the movable nose 21 is opened. In addition, a warning message indicating that the opening is restricted is displayed on the display screen arranged on the movable nose 21 such as “Please wait for a while because it is an intersection soon”. At this time, a voice message may be output simultaneously. An instruction to open may be stored, and the movable nose 21 may be opened after the vehicle passes through the intersection 31.

  Further, when the movable vehicle nose 21 is in the open state when the vehicle position reaches the intersection X1, a warning that the movable vehicle nose 21 is closed is displayed on the screen or output by voice.

  FIG. 3B shows a movable nose when the vehicle position is closer to the intersection 31 than in FIG. 3A and the distance X2 at which guidance of the guidance point (enlarged display of the intersection, etc.) is started. The opening / closing process is shown.

  Assume that the movable nose 21 is open and the disc 34 such as a CD or DVD is placed in the disc insertion slot when the vehicle position reaches the distance X1 to the intersection. At this point X1, a warning for closing the movable nose 21 is output. However, the movable nose 21 may be intentionally left in the open state or may be closed for reasons such as being concentrated on driving operations. It is assumed that the vehicle has reached the point of the distance X2 where the guidance is started with the movable nose 21 being opened without being able to do so. At this point X2, the control unit 12 controls the disk drive (not shown) and the movable nose drive unit 42 so that the disk 34 is forcibly inserted into the disk insertion slot and the movable nose 21 is closed. And an intersection guidance display is output on a display screen in the state where movable nose 21 was closed.

  Furthermore, after the vehicle passes through the intersection 31, the state of the movable nose 21 is returned to the state before passing through the intersection 31.

  If it is determined that the distance from the intersection to the next guide point is short and there is no room for removing the disk 34, the movable nose is kept closed and the next guide point is entered. May be.

(Nose opening / closing process while driving)
Hereinafter, the movable nose opening / closing control process during traveling of the vehicle in the vehicle-mounted navigation device 100 of the present embodiment will be described with reference to FIGS. 4 to 6 showing an example of the process flow. In the present embodiment, an explanation will be given taking an intersection as an example of the guide point.

  FIG. 4 shows a process when the host vehicle is traveling in front of the guidance point and ahead of the distance at which guidance is started.

  First, in step S11, the vehicle position is detected. The longitude and latitude of the vehicle position are acquired from the output of the GPS receiver 3. In addition, referring to the map data, information on the road on which the vehicle is traveling is acquired.

  In the next step S12, it is detected whether or not the own vehicle position is within a predetermined distance (first point) to the intersection as a guide point. The predetermined distance is, for example, a distance of 200 m to the intersection. It is detected based on the map data whether there is a guide point ahead of the road on which the vehicle is traveling, and the distance to the guide point is detected. If it is not within the first point, the process returns to step S11. If it is within the first point, the process proceeds to step S13.

  In the next step S13, the state of the movable nose 21 is detected. The state of the movable nose 21 includes a state in which the movable nose 21 is open and the display screen is horizontal, and a state in which the movable nose 21 is closed and the display screen is in a standing posture. . Which of these states is acquired through the nose opening / closing detection unit 43.

  In the next step S14, it is determined based on the signal detected by the nose opening / closing detection unit 43 whether or not the movable nose 21 is open. If it is not open, the process proceeds to step S15. If it is open, the process proceeds to step S17.

  In the next step S15, it is determined whether or not an operation for opening the movable nose 21 has been performed. The operation of opening the movable nose 21 is determined by whether or not an open button (not shown) in the operation panel arranged on the front surface of the movable nose 21 is selected and the control unit 12 receives the signal. When the open button is selected, in step S16, a message indicating that the operation of opening the movable nose 21 is restricted is displayed on the display unit 7 or output by voice.

  On the other hand, when it is determined in step S14 that the movable nose 21 is in the open state, the process proceeds to step S17, and a message to close the movable nose 21 is displayed on the display unit 7 or output by voice. This process ends.

  Next, with reference to FIG. 5, the movable nose opening / closing control process in a situation where guidance of an intersection that is a guidance point is performed will be described.

  First, in step S21, the vehicle position is detected. The longitude and latitude of the vehicle position are acquired from the output of the GPS receiver 3. In addition, referring to the map data, information on the road on which the vehicle is traveling is acquired. In addition, in step S11 of FIG. 4, when the information on the road on which the vehicle is traveling has already been acquired, the information may be used.

  In the next step S22, it is detected whether or not the vehicle position has entered a point (second point) where the intersection guidance is displayed or output as a voice. Whether or not the vehicle has entered the second point may be determined by detecting the start of intersection guidance, or by determining that the vehicle has entered a distance at which guidance starts. Good. If it is not within the second point, the process returns to step S21. If it is within the second point, the process proceeds to step S23.

  In the next step S23, the state of the movable nose 21 is detected. This process is the same as step S13 in FIG.

  In the next step S24, it is determined whether or not the movable nose 21 is open based on the signal detected by the nose opening / closing detection unit 43. When it is determined that the movable nose 21 is in the open state, the process proceeds to step S25, and when it is determined that the movable nose 21 is in the closed state, the process proceeds to step S28.

  In the next step S25, it is determined whether or not the disk 34 is placed in the disk insertion port of the integrated machine 24. If there is a disk 34, the process proceeds to step S26, and the disk 34 is inserted into a disk drive (not shown). When there is no disk 34, the process proceeds to step S27.

  In the next step S27, the movable nose 21 is closed via the movable nose drive unit 42 to bring the display screen upright.

  In the next step S28, the intersection guide image is displayed on the display screen, and the process is terminated.

  In the above processing, the movable nose 21 is in a closed state or an open state. However, the present invention can also be applied to a case where the movable nose 21 is inclined between the open state and the closed state. For example, when the movable nose 21 is not in the closed state, even if the movable nose 21 is tilted, it may be regarded as the same as the open state, and processing applied in the open state may be performed.

  Further, when the tilted state is close to the closed state and the guide image displayed on the display screen is difficult for the user to see, for example, when the tilt angle is 45 degrees or more, the closing operation is not performed and the tilted state is maintained. It may be.

  Next, with reference to FIG. 6, the nose opening / closing control process after the vehicle has passed the intersection will be described.

  First, in step S31 in FIG. 6, the nose state (the original state) at the second point is detected and stored in the storage unit 17.

  In the next step S32, it is determined whether or not the vehicle has passed a guidance point (intersection). The process waits until the vehicle passes through the intersection, and when it is determined that the vehicle has passed through the intersection, the process proceeds to step S33.

  In the next step S <b> 33, the state of the movable nose 21 before passing the intersection stored in the storage unit 17 is extracted, and the movable nose 21 is returned to the original state via the movable nose driving unit 42. When the movable nose 21 is open in the original state and the disk 34 is not inserted, the disk drive is controlled so that the disk 34 is ejected from the insertion slot.

  Even when the vehicle has passed the intersection, if the distance to the next guidance point is detected and it is determined that the processing is difficult, such as removing the disk, the force is forced The state of the movable nose 21 closed may be maintained, and the movable nose 21 may be returned to the original state when there is a margin until the next guide point.

  As described above, in the in-vehicle navigation device 100 according to the present embodiment, the open / close state of the movable nose 21 is detected when the vehicle approaches the guide point, and the open operation is performed when the movable nose 21 is closed. It warns you not to. Further, when the vehicle nose 21 is opened and the vehicle enters within a point where the intersection guidance is output, the movable nose 21 is forcibly closed and the intersection guidance is displayed on the screen. Thereby, the intersection guidance can be confirmed on the screen without processing the movable nose 21 at the time of the intersection guidance, and it is possible to contribute to safe driving.

  In this embodiment, an intersection is taken as an example as a guide point. However, the present invention is not limited to this, and it is difficult to grasp the situation only by voice guidance, and it is a point such as a branch point where a guidance display is output on the screen. Applicable.

100: In-vehicle navigation device,
1a ... DVD-ROM (map data storage means),
3 GPS receiver (own vehicle position detection means),
7: Display section (display means),
8: Speaker (audio output means),
11: Buffer memory (map data storage means),
12 ... Control part (control means),
17 ... storage part,
18 ... Audio output unit (audio output means),
21 ... movable nose,
42 ... movable nose drive,
43 Nose opening / closing detection unit (nose opening / closing detection means).

Claims (5)

Display means arranged on a movable nose;
Map data storage means for storing map data including information on guide points;
Own vehicle position detecting means for detecting the current position of the own vehicle;
Nose open / close detecting means for detecting an open / closed state of the movable nose;
Control means for detecting the distance from the current position of the vehicle to the guidance point;
Have
When the current position of the vehicle is within a predetermined distance to the guide point and the guide point is being guided, and the movable nose is open, the control means A vehicle-mounted navigation device , wherein a medium placed in a medium insertion port of a casing provided with a movable nose is inserted into the medium insertion port to shift the movable nose to a closed state . It said control means, vehicle navigation apparatus according to claim 1, characterized in that outputs a warning message to the effect that shifts the movable nose closed on the display screen of the display unit.   The control means indicates that the current position of the host vehicle is within the predetermined distance range and is in a position before guidance of the guide point is performed, and the movable nose in a closed state is operated to an open state. 3. The in-vehicle navigation device according to claim 2, wherein when the signal is received, a warning message for restricting the operation is output on the screen of the display means. Furthermore, an audio output means is provided,
The in-vehicle navigation according to claim 2 or 3, wherein the control means displays the warning message on a screen of the display means and outputs the message via the voice output means. apparatus.   The in-vehicle navigation device according to claim 1, wherein the control means shifts the state of the movable nose to a state before passing through the guide point after passing through the guide point.

Images