JP2012108151A - Navigation device, and navigation method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a navigation device capable of substantially reducing users' operation labor and improving convenience.SOLUTION: Operation menu data has a data structure in which a prescribed operation button is allocated to each layer of a hierarchy. A state quantity detection part 43 detects a current position of a vehicle 1, current time, remaining quantity of gasoline, etc., updates the operation menu data according to the result of detection of their state quantities, and updates allocation content of the layer of the hierarchy. At this time, according to a situation which is estimated by the result of the detection, allocation of operation buttons having a greater possibility to be operated is altered to higher layers of the hierarchy, and the allocation of operation buttons having a less possibility to be operated is altered to lower layers of the hierarchy.

Description

  The present invention relates to a navigation apparatus and a navigation method for guiding a vehicle using map data.

  Conventionally, navigation apparatuses that perform guidance (navigation) of a vehicle using map data have been widely used. In such a navigation device, when a route from the current location to the destination is searched, the route is displayed on the display unit so as to overlap the map, and the vehicle is guided by the guidance unit by this guidance display.

  At this time, an operation menu for performing various processes related to the guidance (for example, parking lot search, shop search, gas station search, etc.) is usually provided so as to overlap the guidance display on the display means. . Many operation buttons are prepared in advance in the operation menu. Usually, the initial main menu that displays representative operation buttons or one of the operation buttons displayed on the main menu is operated. It has a hierarchical data structure that includes submenus that transition with. The user can perform a comfortable navigation by selecting and selecting a function to be executed while viewing the operation menu.

  Conventionally, in the hierarchical operation menu data structure as described above, the operation menu is updated based on the operation history of the operation buttons, and control is performed so that the operation buttons having a larger past operation history are displayed in the higher-level menu. A technique is known (for example, Patent Document 1). In this prior art, by displaying the operation buttons in a hierarchy reflecting the operation history as described above, the operation menu display is controlled to reflect the usage tendency of the operator (user) so that the usability can be improved. It has become.

JP 2001-221644 A

  However, the operation buttons that the operator wants to preferentially operate during vehicle operation vary depending on various situations during traveling. For example, while driving based on navigation and approaching the destination, the need for operation of the parking lot search button is high, but the need for operation of the parking lot search button is low when the vehicle has just departed to the destination. Similarly, when the gasoline tank is full, the need for operating the gas station search button is low, but the need for operation increases as the remaining amount of gasoline decreases.

  In the above prior art, the operation menu hierarchy for displaying the operation buttons is merely controlled based on the past number of operations for each operation button, and the operation needs in various situations during vehicle operation as described above are controlled. There is not much consideration for change.

  The problem to be solved by the present invention includes the above-described problem as an example.

In order to solve the above problem, the invention according to claim 1 displays on the display means an acquisition means for acquiring the current location and at least one operation button for executing an operation command for selecting a predetermined facility. And a display control unit that includes a detection unit that detects a road at the current location, and the display control unit displays the operation button based on a detection result by the detection unit.
In order to solve the above-mentioned problem, the invention according to claim 2 displays on the display means an acquisition means for acquiring the current location and at least one operation button for executing an operation command for selecting a predetermined facility. A navigation control method including: a display control unit configured to detect a road at a current location; and a display step of displaying the operation button based on a detection result of the detection step.

It is a block diagram which shows the hardware structural example of the navigation apparatus of this embodiment. It is a functional block diagram which shows the software structural example which operate | moves in a navigation apparatus. It is a figure showing an example of the content of the operation menu data of a default state. It is a figure showing an example of a display of a display when the display control part reads the operation menu data of a default state. It is a flowchart which shows the example of a procedure of the guidance display process by a navigation apparatus. It is a figure showing an example of the content of the updated operation menu data when approaching the destination. It is a figure showing an example of a display of a display when approaching the destination. It is a figure showing an example of a display of a display when a "parking lot" button is operated. It is a flowchart which shows the example of a procedure of the guidance display process by a navigation apparatus. It is a figure showing an example of the content of the operation menu data of a default state. It is a figure showing an example of the content of the updated operation menu data in case the present time corresponds to a meal time zone. It is a figure showing an example of a display of a display in case the present time corresponds to a meal time zone. It is a figure showing an example of a display of a display when a "family restaurant" button is operated. It is a flowchart which shows the example of a procedure of the guidance display process by a navigation apparatus. It is a figure showing an example of the content of the updated operation menu data when fuel remaining amount is insufficient. It is a figure showing an example of a display of a display when the amount of remaining fuel is insufficient. It is a figure showing an example of a display of a display when a "gas station" button is operated. It is a figure showing an example of the content of the operation menu data of a default state. It is a figure showing an example of the content of the updated operation menu data in case the road type in driving | running | working is a highway. It is a figure showing an example of a display of a display in case the road type under driving is a highway. It is a flowchart which shows the example of a procedure of the guidance display process by a navigation apparatus. It is a figure showing an example of the content of the operation menu data of a default state. It is a figure showing an example of the content of the updated operation menu data in case the present time corresponds to a break time zone. It is a figure showing an example of a display of a display in case the present time corresponds to a break time zone. It is a figure showing an example of a display of a display when a "park" button is operated.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram illustrating a hardware configuration example of the navigation device 100 according to the present embodiment.

  The navigation device 100 is mounted on the vehicle 1. The navigation device 100 has a navigation function of detecting the current location based on the detection result of the current location detection sensor 22 and searching for a route from the current location to the set destination or waypoint. Also, it has a music playback function for playing back music data written in a storage medium 16 such as a CD (Compact Disk), a HDD (Hard Disk Drive), or a flash memory.

  In the example shown in FIG. 1, the navigation device 100 includes a storage device 18, an arithmetic device 20, a display control circuit 14, a clock circuit 10, and an interface 6, which are connected by a bus 12. Therefore, the arithmetic unit 20 is configured to exchange data with the storage device 18, the interface 6, the clock circuit 10, and the display control circuit 14.

  A display 15 (corresponding to display means) is connected to the navigation device 100. In addition, the navigation device 100 is connected to the current position detection sensor 22, the speaker 18, the touch panel 21, and the fuel remaining amount gauge 23 via the interface 6. The display 15 and the current position detection sensor 22 may be configured as a part of the navigation device 100.

  The current location detection sensor 22 (corresponding to detection means) includes at least one of an acceleration sensor 5, a gyro sensor 2, a vehicle speed pulse detector 3, a GPS (Global Positioning System) 4, and a geomagnetic sensor 11, or a combination of any of these. Can be illustrated.

  The acceleration sensor 5 has a function of detecting at least one of the acceleration and the tilt angle of the vehicle 1, for example. The gyro sensor 2 has a function of detecting the moving direction of the vehicle 1, for example. The vehicle speed pulse detector 3 has a function of detecting, for example, the movement amount and acceleration of the vehicle 1. The vehicle speed pulse detector 3 detects whether the vehicle 1 is moving or stopped and outputs the detected state. The vehicle speed pulse detector 3 has a function of outputting travel state data relating to the travel speed and travel distance of the vehicle 1 when the vehicle 1 is moving.

  The GPS 4 has a function of receiving and calculating radio waves from a plurality of GPS satellites and performing positioning. The GPS 4 generates positioning data of, for example, any one of latitude, longitude, altitude, and traveling direction, or any combination thereof. Specifically, the GPS 4 has a function of, for example, measuring pseudo distances to four satellites observed at the same time and positioning the current location based on a difference in pseudo distances to these four satellites. The GPS 4 also has a function of receiving radio waves from GPS satellites, performing calculations, and acquiring the current time. The time output from the clock circuit 10 is corrected based on the GPS 4 acquisition result. As a result, the arithmetic unit 20 can acquire an accurate current time from the clock circuit 10. The geomagnetic sensor 11 is a kind of azimuth detecting device that detects an angle representing the absolute azimuth of a vehicle based on geomagnetism. An example of such an angle is an azimuth angle.

  The storage device 18 includes a ROM 8, a RAM 9, and a storage medium 16. The ROM 8 is an information storage medium in which various processing programs described later and other necessary information are written in advance. The RAM 9 is an information storage medium on which information necessary for executing the various programs is written and read. The RAM 9 is a memory capable of storing programs, tables, and data described later in a volatile manner. As described above, the storage medium 16 is an information storage medium such as a CD, HDD, or flash memory. The storage medium 16 stores map data, operation menu data, music data, and the like in a rewritable manner. Details of the operation menu data will be described later.

  The arithmetic unit 20 includes a CPU 7 and a graphic controller 13. The CPU 7 has a function of performing various calculations and controls according to the various programs. The graphic controller 13 has a function of acquiring image data from a video RAM (not shown) or the like under the control of the CPU 7 and causing the display control circuit 14 to display an image based on the image data on the display 15.

  Specifically, the graphic controller 13 displays, for example, an electronic map based on the map data on the display 15 under the control of the CPU 7, or a mark indicating the position (current location) of the vehicle on the electronic map. It has a function of guiding and displaying the route to the destination or waypoint searched for by overlapping the mapping. Further, at least one operation button for executing a predetermined operation command related to guidance of the vehicle 1, for example, a “parking lot” button or “gasoline” for executing various search commands for searching for a parking lot, a gas station, or the like. The operation button based on image data indicating various buttons such as a “stand” button and a “track list” button and a “group list” button for executing a music display command for displaying music data to be reproduced in a predetermined display mode. And a function for displaying an image representing the image superimposed on the electronic map at a predetermined position on the display 15. Note that image data indicating the various operation buttons is stored in the storage medium 16.

  The touch panel 21 is provided along the surface of the display area of the display 15. For example, when a touch operation is performed by a user (driver or passenger) on the display position of an image representing various operation buttons on the surface of the display area of the display 15, the touch panel 21 has a serial signal corresponding to the contact location. Is generated. Thus, when the user performs a touch operation on the image representing the various operation buttons displayed on the display 15, the operation command corresponding to the image is executed. In the present embodiment, the touch panel 21 will be described. However, the present invention is not limited to the touch panel 21, and is an image representing various operation buttons displayed on an operation panel using an electrostatic sensor or a display area of the display 21. Any of the operation panels that can be realized on the surface of the display area of the display 15 such as an operation panel that is operated by designating one of them with a cursor or the like can be applied.

  The speaker 18 has a function of outputting guidance guidance voice accompanying the guidance display and reproduced music sound under the control of the CPU 7. The fuel remaining amount gauge 23 has a function of detecting the remaining amount of fuel (gasoline) in the fuel tank.

  FIG. 2 is a functional block diagram illustrating a software configuration example that operates in the navigation device 100 illustrated in FIG. 1. Note that the software shown in FIG. 2 is an example of a program and data whose operation is controlled by the CPU 7. Hereinafter, a configuration example of software will be described with reference to FIG.

  The navigation program has a route search unit 41, a guidance unit 42, a state quantity detection unit 43, and a display control unit 44 as its functions, and allows the navigation device 100 to exhibit the functions described above and the functions described later.

  The route search unit 41 has a function of searching for a route from the current location of the vehicle 1 to the destination or waypoint set by the user. The guiding unit 42 acquires map data around the current location from the map database MD, and displays the route searched by the route searching unit 41 on the electronic map displayed on the display 15 based on the map data. And has a function of guiding the vehicle 1.

  The state quantity detection unit 43 detects the state quantity relating to the traveling vehicle 1, for example, the current position of the vehicle 1 based on the detection result of the current position detection sensor 22, the current time based on the output of the clock circuit 10, and the fuel remaining amount indicator 23. It has a function of detecting the remaining amount of fuel based on the result.

  The display control unit 44 (corresponding to the display control means) displays an operation menu including a plurality of operation buttons for executing the various operation commands described above using the operation menu data stored in the operation menu information database OD. 15 is displayed. Details of this display function will be described with reference to FIGS.

  The operation menu data stored in the operation menu information database OD is information that defines which operation buttons are to be displayed in which hierarchy. The operation menu is a group of operation buttons assigned to a plurality of layers based on the operation menu data. FIG. 3 is a diagram illustrating an example of the contents of the operation menu data in a state where the display control unit 44 has not updated (hereinafter, referred to as a default state). The operation menu data update function will be described later.

  As shown in FIG. 3, the operation menu data has a data structure in which at least one operation command (including image data indicating an operation button) is assigned to each level of the operation menu including a plurality of levels. . In FIG. 3, for easy understanding, the structure is illustrated as a structure in which operation buttons corresponding to each operation command are assigned to each layer (the same applies to the subsequent drawings). The display control unit 44 is in the highest hierarchy of the operation menu data read from the operation menu information database OD when the contact operation by the user is not performed on the display position of the image representing the operation button displayed on the display 15. Image data indicating a certain first level operation button is acquired, and an image representing each of the first level operation buttons is displayed on the display 15 based on the image data. That is, the hierarchy that is the display target in the operation menu data in this case (hereinafter referred to as the display target hierarchy) is the first hierarchy.

  For example, in the example shown in FIG. 3, a “menu” button and a “view” button are assigned to the first hierarchy. FIG. 4 is a diagram illustrating an example of display on the display 15 when the display control unit 44 reads the operation menu data illustrated in FIG. 3. As shown in FIG. 4, on the electronic map around the current location of the vehicle 1, a mark M representing the current location of the vehicle 1 and a route RT to the searched destination or waypoint are displayed and displayed on the electronic map. In addition, an image representing a “menu” button and an image representing a “view” button assigned to the first hierarchy are displayed in an overlapping manner.

  The “menu” button and the “view” button move the display target hierarchy to a lower hierarchy (in this case, the second hierarchy), and are associated with predetermined operation buttons (assigned to the second hierarchy). This is an operation button for executing a display operation command for displaying an image representing. For example, the “menu” button includes a peripheral search function for searching for various facilities around the current location, a traffic jam information function for acquiring and displaying traffic jam information, a music playback function for playing music data stored in the storage unit 16, and a display target “Peripheral search” button, “congestion information” button, “music playback” button, and “return” button are associated with each other to execute a return function for changing the hierarchy to a higher hierarchy and returning the display to the previous one. It has been. The “view” button includes various operation buttons (not shown) for changing the display mode (for example, planar or stereoscopic, display direction, scale, display color, character size, etc.) of the electronic map on the display 15. Associated. The plurality of operation buttons respectively associated with the “menu” button and the “view” button are assigned to the second hierarchy. Note that only the operation buttons associated with the “menu” button are illustrated in the second hierarchy in FIG. 3 to prevent complications.

  Therefore, for example, when the display position of the image representing the “menu” button displayed on the display 15 is touched by the user, the display operation command corresponding to the image (“menu” button) is executed, and the display target hierarchy Transitions to the second hierarchy, and an image representing each of the “peripheral search” button, the “traffic jam information” button, the “music playback” button, and the “return” button associated with the “menu” button is displayed on the display 15. Is done. Similarly to the above, these operation buttons (excluding the “return” button) shift the display target hierarchy to a lower hierarchy (in this case, the third hierarchy), and perform predetermined operation buttons (into the third hierarchy) associated therewith. This is an operation button for executing a display operation command for displaying an image representing (assigned). For example, a “search around” button is used to execute a search function for car-related facilities around the current location, a search function for facilities related to eating and drinking, a search function for facilities related to resting places, and a search function for facilities related to play. A “car-related facility” button, an “eat / drink” button, a “rest” button, and a “play” button are associated with the “return” button. In addition, the “congestion information” button is associated with various operation buttons for acquiring the traffic jam information and displaying the acquired traffic jam information on the display 15. The “music playback” button stores the music data to be played back. A “CD” button, a “hard disk” button, and a “flash memory” button for selecting a stored storage medium are associated with each other. These associated operation buttons are assigned to the third hierarchy. Note that only the operation buttons associated with the “peripheral facility” button are illustrated in the third hierarchy in FIG. 3 to prevent complications.

  Thus, for example, when the display position of the image representing the “peripheral search” button displayed on the display 15 is touched by the user, the display operation command corresponding to the image (“peripheral search” button) is executed, The display target hierarchy changes to the third hierarchy, and the “car related facility” button, “eating / drinking” button, “rest” button, “play” button, and “return” button associated with the “search around” button are displayed. Images representing the respective images are displayed on the display 15. Similarly to the above, these operation buttons (excluding the “return” button) also shift the display target hierarchy to a lower hierarchy (in this case, the fourth hierarchy), and perform predetermined operation buttons (into the fourth hierarchy) associated therewith. This is an operation button for executing a display operation command for displaying an image representing (assigned). For example, the “car-related facilities” button includes a “parking lot” button, a “gas station” button, and a “dealer” button for executing a search function for a parking lot around the current location, a search function for a gas station, and a search function for a dealer. ”Button and the“ return ”button are associated with each other. The “eating / drinking” button is associated with various operation buttons for searching for facilities related to eating and drinking (for example, family restaurants, fast food, etc.) and displaying the search results on the display 15. The buttons are associated with various operation buttons for searching for facilities related to the break (for example, convenience stores, parks, etc.) and displaying the search results on the display 15. The “play” button is related to play. Various operation buttons for searching for facilities (for example, amusement parks, movie theaters, etc.) and displaying the search results on the display 15 are associated. These associated operation buttons are assigned to the fourth hierarchy. Note that, in the fourth hierarchy in FIG. 3, only the operation buttons associated with the “vehicle-related facility” button are illustrated for the purpose of preventing complications.

  Thus, for example, when the display position of the image representing the “car-related facility” button displayed on the display 15 is touched by the user, the display operation command corresponding to the image (“car-related facility” button) is executed. The display target hierarchy is changed to the fourth hierarchy which is the lowest hierarchy, and a “parking lot” button, a “gas station” button, a “dealer” button, and a “return” button associated with the “car-related facility” button are displayed. An image representing each of the above is displayed on the display 15. These operation buttons (excluding the “return” button) are operation buttons for searching for a facility to be searched around the current location and executing a search command for displaying the search result on the display 15. Therefore, for example, when the “parking lot” button displayed on the display 15 is operated by the user, the search command is executed, a parking lot around the current location is searched, and the search result is displayed on the display 15.

  In any hierarchy below the second hierarchy, when the “return” button displayed on the display 15 is operated by the user, the display operation command corresponding to the “return” button is executed, and the display target hierarchy Is transferred to an upper layer, and an image representing each of the operation buttons assigned to the upper layer is displayed on the display 15.

  FIG. 3 illustrates an example in which the operation menu data has a data structure consisting of four levels. For example, the type of parking lot (paid parking lot, free parking lot, etc.) below the “parking lot” button. It is also possible to have a data structure consisting of a number of hierarchies, such as associating each operation button. Further, a large number of operation buttons corresponding to a large number of operation commands may be assigned to each layer.

  Next, a function for updating the operation menu data by the display control unit 44 will be described. The display control unit 44 has a function of updating the operation menu data stored in the operation menu information database OD so as to be updatable based on the detection result by the state quantity detection unit 43 and changing the contents of the operation command hierarchy allocation. Details of this update function will be described below in detail with reference to FIGS.

  FIG. 5 is a flowchart illustrating a procedure example of guidance display processing by the navigation device 100. This guidance display process includes a procedure realized by the navigation program operating under the control of the CPU 7. In this flowchart, processing is started based on the control of the CPU 7 when the power of the navigation device 100 is turned on.

  In step S <b> 1, the state quantity detection unit 43 acquires the current location of the vehicle 1 based on the detection result of the current location detection sensor 22.

  In step S2, the guiding unit 42 acquires map data around the current location acquired in step S1 from the map database MD.

  In step S3, the display control unit 44 acquires operation menu data in a default state (for example, data having contents shown in FIG. 3) from the operation menu information database OD.

  In step S4, the display control unit 44 displays an electronic map around the current location on the display 15 based on the map data acquired in step S2, and the vehicle 1 based on the acquisition result in step S1 is displayed on the electronic map. The mark M representing the current location of the operation button and the image representing each of the operation buttons assigned to the first layer, which is the highest layer of the operation menu data acquired in step S3, are superimposed on each other and displayed on the display 15. As a result, the display on the display 15 is, for example, the display shown in FIG. 4 (except for the route RT).

  In step S5, the route search unit 41 determines whether or not a destination (or a transit point may be used. The same applies to the flowchart below) is set by the user. When it is determined that the destination is not set (step S5: NO), the process proceeds to step S13 (see FIG. 9) described later. On the other hand, when it is determined that the destination is set (step S5: YES), the process proceeds to step S6.

  In step S6, the route search unit 41 searches for a route from the current location of the vehicle 1 acquired in step S1 to the destination set in step S5.

  In step S7, the guidance unit 42 maps the route searched by the route search unit 41 in step S6 onto the electronic map around the current location displayed on the display 15 by the display control unit 44 in step S4. The vehicle 1 is guided while displaying. The display on the display 15 at this time is, for example, the display shown in FIG. Although not shown in the flowchart, during the route guidance, as in step S1, the state quantity detection unit 43 acquires the current location of the vehicle 1 every predetermined time.

  In step S8, the display controller 44 sets the distance between the current location of the vehicle 1 acquired by the state quantity detector 43 and the destination set in step S5 to be within a predetermined distance (for example, 1 km) set in advance. It is determined whether or not. If it is determined that the distance between the current location and the destination is greater than the predetermined distance (step S8: NO), the process returns to step S7. On the other hand, when it is determined that the distance between the current location and the destination is within a predetermined distance (step S8: YES), the process proceeds to step S9.

  In step S9, the display control unit 44 changes the tier allocation content so that the “parking lot” button of the fourth tier that is the lowest tier of the operation menu data becomes the first tier that is the highest tier, and the operation menu Update the data. Then, an image representing the “parking lot” button assigned to the first hierarchy of the updated operation menu data is superimposed on the electronic map around the current location and displayed on the display 15.

  FIG. 6 is a diagram showing an example of the contents of the updated operation menu data at this time, and FIG. 7 is a diagram showing an example of display on the display 15 at this time. As shown in FIG. 6, the display control unit 44 sets the “parking lot” button assigned to the fourth hierarchy of the operation menu data in the default state to the first hierarchy, and the other operation buttons for each hierarchy. The contents of the hierarchy assignment are changed so that each becomes a lower hierarchy. As a result, the updated operation menu data has a data structure consisting of five layers. In addition, a “return” button is assigned to the first level together with the “parking lot” button. As a result, as shown in FIG. 7, on the display 15, images representing the “menu” button and the “view” button changed to the second hierarchy are not displayed, and the “parking” changed to the first hierarchy is displayed. Images representing each of the “car park” button and the “return” button are displayed superimposed on the electronic map.

  Note that the “return” button assigned to the first hierarchy changes the display target hierarchy to the lower hierarchy (in this case, the second hierarchy), and the associated operation button (in this case, the default state changes to the first hierarchy). This is an operation button for executing a display operation command for displaying an image representing each of the existing “menu” button and “view” button. Thereby, even if the operation menu data is updated and an image representing the “parking lot” button and the “return” button is displayed as shown in FIG. 7, the user operates the “return” button. The display target hierarchy is transitioned to the second hierarchy, and it is possible to return to the initial display (for example, the display shown in FIG. 4) corresponding to the default state.

  In the example shown in FIG. 6, after changing the “parking lot” button to the first level, the “parking lot” button of the original level (the fifth level after the change) is left as it is. The hierarchy button may be deleted. As a result, it is possible to prevent the same operation buttons from being assigned to different levels.

  Returning to FIG. 5, in step S <b> 10, the display control unit 44 determines whether the display position of the image representing the “parking lot” button displayed on the display 15 in step S <b> 9 has been touched by the user. When it determines with the "parking lot" button having been contact-operated (step S10: YES), it transfers to step S11.

  In step S11, the display control unit 44 executes a search command corresponding to the image (the “parking lot” button), searches for a parking lot around the current location based on the facility information included in the map data, and performs the search. The result is displayed on the display 15 so as to be superimposed on the electronic map. Thus, the process ends.

  FIG. 8 is a diagram illustrating an example of display on the display 15 at this time. As shown in FIG. 8, a parking lot mark P representing a parking lot extracted around the current location is displayed on the display 15. Further, when the search result is displayed, the image representing the “parking lot” button disappears, and only the image representing the “return” button is displayed as the operation button. When the “return” button is touched, for example, the display returns to the initial display (for example, the display shown in FIG. 4) corresponding to the default state. In the example shown in FIG. 8, only the position of the parking lot is displayed, but detailed information (number of parking, whether paid or free, etc.) may also be displayed. Further, when the user operates a desired parking lot mark P in the displayed parking lot, route guidance to the parking lot may be started.

  Returning to FIG. 5, when it is determined in step S10 that the display position of the image representing the “parking lot” button has not been touched (step S10: NO), the process proceeds to step S12.

  In step S12, the display control unit 44 calculates the elapsed time after displaying the image representing the “parking lot” button in step S9 from the difference between the time information acquired from the clock circuit 10 at the start of display and the current time. Then, it is determined whether or not the elapsed time is equal to or longer than a predetermined time (for example, 30 seconds). If it is determined that the elapsed time is less than the predetermined time (step S12: NO), the process returns to step S10. On the other hand, when it determines with elapsed time being more than predetermined time (step S12: YES), it transfers to below-mentioned step S13 (refer FIG. 9).

  Moving to FIG. 9, in step S <b> 13, the display control unit 44 acquires the current time from the clock circuit 10.

  In step S14, the display control unit 44 determines whether or not the current time acquired in step S13 corresponds to a time zone that prompts the user to perform an operation. Here, the time zone for prompting the user to operate is a meal time zone (for example, 7:00 to 8:00, 11:30 to 13:00, 17:30 to 19:30) described later, or a progress after the start of driving. It refers to a break time zone in which the time is a predetermined time width (for example, 2-3 hours). When the current time does not correspond to the above time zone (step S14: NO), the process proceeds to step S21 (see FIG. 14) described later. On the other hand, when the current time corresponds to the above time zone (step S14: YES), the process proceeds to step S15.

  In step S15, the display control unit 44 recognizes which type of time zone the meal time zone and the break time zone correspond to the current time acquired in step S13, and in the next step S16, Based on the recognition result, it is determined whether or not the current time corresponds to the meal time zone. When the current time does not correspond to the meal time zone, that is, when it corresponds to the break time zone (step S16: NO), the process proceeds to later-described step S33 (see FIG. 21). On the other hand, when the current time corresponds to the meal time zone (step S16: YES), the process proceeds to step S17.

  When the current time corresponds to the meal time zone in step S16 (step S16: YES), the remaining time between the detected current time and the predetermined meal time zone described in the claims Is shorter than a predetermined time (0 in the above example) as a threshold value.

  In step S17, the display control unit 44 operates buttons related to restaurant search in the fourth layer, which is the lowest layer of the operation menu data (for example, “family restaurant” button, “fast food” button, “Chinese” button described later). , “Japanese food” button) is changed to the first hierarchy which is the highest hierarchy, and the contents of the hierarchy assignment are changed, and the operation menu data is updated. Then, an image representing each of the various operation buttons related to restaurant search assigned to the first hierarchy of the updated operation menu data is superimposed on the electronic map around the current location and displayed on the display 15.

  FIG. 10 is a diagram illustrating an example of the contents of the operation menu data in the default state. Unlike FIG. 3 described above, the operation buttons associated with the “eat / drink” button are illustrated in the fourth layer. FIG. 11 is a diagram showing an example of the contents of the operation menu data updated in step S17, and FIG. 12 is a diagram showing an example of display on the display 15 at this time.

  As shown in FIG. 10, in the operation menu data in the default state, the “eat / drink” button includes a family restaurant search function around the current location, a fast food restaurant search function, a Chinese restaurant search function, and a Japanese meal. A “family restaurant” button, a “fast food” button, a “Chinese food” button, a “Japanese food” button, and a “return” button for executing a restaurant search function are associated with each other. These associated operation buttons are assigned to the fourth hierarchy, which is the lowest hierarchy.

  Then, as shown in FIG. 11, the display control unit 44 has the “family restaurant” button, “fast food” button, “Chinese” assigned to the fourth hierarchy of the operation menu data in the default state shown in FIG. The buttons and the “Japanese food” button are set to the first hierarchy, and the operation assignments for the other operation buttons are changed so that each hierarchy is one lower hierarchy. Similarly to the above, a “return” button is assigned to the first hierarchy. As a result, as shown in FIG. 12, on the display 15, images representing the “menu” button and the “view” button changed to the second hierarchy are not displayed, and the “family restaurant” changed to the first hierarchy is displayed. Images representing each of the button, the “fast food” button, the “Chinese food” button, the “Japanese food” button, and the “return” button are displayed superimposed on the electronic map.

  Returning to FIG. 9, in step S <b> 18, the display control unit 44 activates each of the “family restaurant” button, the “fast food” button, the “Chinese food” button, and the “Japanese food” button displayed on the display 15 in step S <b> 17. It is determined whether or not the display position of an image representing an operation button related to any restaurant search is touched by the user. When it is determined that any one of the operation buttons has been touched (step S18: YES), the process proceeds to step S19.

  In step S19, the display control unit 44 executes a search command corresponding to the image (operation button related to restaurant search), searches for restaurants around the current location based on the facility information included in the map data, The search result is displayed on the display 15 so as to be superimposed on the electronic map. Thus, the process ends.

  FIG. 13 is a diagram illustrating an example of display on the display 15 in step S19 when the “family restaurant” button is operated in step S18. As shown in FIG. 13, a family restaurant mark FR representing a family restaurant extracted around the current location is displayed on the display 15. In addition, when this search result is displayed, the images representing the “family restaurant” button, the “fast food” button, the “Chinese food” button, and the “Japanese food” button disappear as before, and the operation button is the “return” button. Only an image representing is displayed. In the example shown in FIG. 13, as described above, not only the position of the family restaurant but also detailed information (family restaurant name, menu list, etc.) may be displayed. Further, when the user operates a desired family restaurant mark FR among the family restaurants displayed, route guidance to the family restaurant may be started.

  Returning to FIG. 9, in step S18, the display position of the image representing any of the “Family restaurant” button, “Fast food” button, “Chinese food” button, and “Japanese food” button is not touched. (Step S18: NO), the process proceeds to step S20.

  In step S20, the display control unit 44 calculates the elapsed time after displaying the image representing the operation button related to the restaurant search in step S18, and whether or not the elapsed time is equal to or longer than a predetermined time (for example, 30 seconds). Determine whether. If it is determined that the elapsed time is less than the predetermined time (step S20: NO), the process returns to step S18. On the other hand, when it is determined that the elapsed time is equal to or longer than the predetermined time (step S20: YES), the process returns to step S3 described above, and the operation menu data updated in step S17 is returned to the operation menu data in the default state. Repeat the same procedure again.

  Turning to FIG. 14, in step S <b> 21, the state quantity detection unit 43 acquires the fuel remaining amount in the fuel tank of the vehicle 1 based on the detection result of the fuel remaining amount gauge 23.

  In step S22, the display control unit 44 determines whether or not the remaining fuel amount is insufficient based on the remaining fuel amount acquired by the state quantity detection unit 43 in step S21. This determination is performed by comparing the remaining amount of fuel with a predetermined threshold value. This threshold value is a value set in advance (for example, 5 liters) in consideration of the fuel consumption of the vehicle 1 when the destination is not set, and when the destination is set. It is a value calculated as the fuel requirement necessary for traveling to the destination. The calculation of the required amount of fuel may be performed in consideration of the fuel consumption of the vehicle 1 and the current traffic situation. If the remaining amount of fuel is greater than the threshold value, it is determined that it is sufficient, and if it is less than or equal to the threshold value, it is determined that it is insufficient. If it is determined that the remaining amount of fuel is insufficient (step S22: YES), the process proceeds to step S23.

  When the remaining fuel amount is insufficient in step S22 (step S22: YES), the difference between the detected remaining fuel amount and the predetermined fuel limit amount is described in the claims. This corresponds to when the threshold value is smaller than a predetermined amount (in this case, 0).

  In step S23, the display control unit 44 determines whether or not to perform eco-route display. An eco route is a route that is considered to have a relatively small amount of fuel consumption, such as a route with less traffic jams or a route with less undulations. Whether or not to perform the eco route display may be determined by, for example, the user setting the presence or absence of the eco route display in advance, or the display 15 prompts the user to input whether or not to execute the display every time the fuel is insufficient. The determination may be made based on the input of the user. When it is determined that the eco route display is not performed (step S23: NO), the process proceeds to step S26 described later. On the other hand, when it is determined that the eco route display is to be performed (step S23: YES), the process proceeds to step S24.

  In step S24, the route search unit 41 determines the amount of fuel consumption based on the current location of the vehicle 1 acquired by the state quantity detection unit 43, traffic congestion information around the current location, altitude information around the current location included in the map data, and the like. Search for eco routes that are considered to be relatively few.

  In step S25, the guidance unit 42 guides the vehicle 1 while mapping the eco route searched by the route search unit 41 in step S24 on the electronic map around the current location displayed on the display 15 and performing guidance display. I do.

  In step S26, the display control unit 44 assigns the level assignment contents so that the “gasoline station” button (see FIG. 3) in the fourth level which is the lowest level of the operation menu data becomes the first level which is the highest level. Change and update the operation menu data. Then, an image representing the “gas station” button assigned to the first layer of the updated operation menu data is superimposed on the electronic map around the current location and displayed on the display 15.

  FIG. 15 is a diagram illustrating an example of the contents of the updated operation menu data at this time, and FIG. 16 is a diagram illustrating an example of display on the display 15 at this time. As shown in FIG. 15, the display control unit 44 sets the “gas station” button assigned to the fourth hierarchy of the operation menu data in the default state to the first hierarchy, and the other operation buttons for each hierarchy. The contents of the hierarchy assignment are changed so that each becomes a lower hierarchy. Also, a “return” button is assigned to the first hierarchy in the same manner as described above. As a result, as shown in FIG. 16, on the display 15, images representing the “menu” button and the “view” button changed to the second hierarchy are not displayed, and the “gasoline changed to the first hierarchy” is displayed. Images representing each of the “stand” button and the “return” button are displayed superimposed on the electronic map.

  Returning to FIG. 14, in step S <b> 27, the display control unit 44 determines whether or not the display position of the image representing the “gas station” button displayed on the display 15 in step S <b> 26 has been touched by the user. If it is determined that the “gas station” button has been touched (step S27: YES), the process proceeds to step S28.

  In step S28, the display control unit 44 executes a search command corresponding to the image (“gas station” button), searches for a gas station around the current location based on the facility information included in the map data, and performs the search. The result is displayed on the display 15 so as to be superimposed on the electronic map. Thus, the process ends.

  FIG. 17 is a diagram illustrating an example of display on the display 15 at this time. As shown in FIG. 17, a gas station mark GS representing a gas station extracted around the current location is displayed on the display 15. Similarly to the above, when the search result is displayed, the image representing the “gas station” button disappears and only the image representing the “return” button is displayed as the operation button. As described above, not only the position of the gas station but also detailed information (oil company name, price, etc.) may be displayed together. Further, when the user operates a desired gas station mark GS in the displayed gas station, route guidance to the gas station may be started.

  Returning to FIG. 14, when it is determined in step S27 that the display position of the image representing the “gas station” button has not been touched (step S27: NO), the process proceeds to step S29.

  In step S29, the display control unit 44 calculates the elapsed time after displaying the image representing the gas station button in step S26, and determines whether or not the elapsed time is equal to or longer than a predetermined time (for example, 30 seconds). . If it is determined that the elapsed time is less than the predetermined time (step S29: NO), the process returns to step S27. On the other hand, when it is determined that the elapsed time is equal to or longer than the predetermined time (step S29: YES), the process returns to step S3 described above, and the operation menu data updated in step S26 is returned to the operation menu data in the default state. Repeat the same procedure again.

  On the other hand, when it is determined in step S22 described above that the remaining fuel amount is sufficient (step S22: NO), the process proceeds to step S30. In step S30, the display control unit 44, based on the current location of the vehicle 1 acquired by the state quantity detection unit 43 and the road type information included in the map data corresponding to the current location, the type information of the traveling road that is currently running. To get. In addition, the procedure of this step S30 corresponds to the detection means and the detection step described in each claim.

  In step S31, the display control unit 44 determines whether or not the traveling road is an expressway based on the type information acquired in step S30. If it is determined that the traveling road is not an expressway (step S31: NO), the process returns to step S3 described above, and if the operation menu data is updated in step S32 described later, the operation menu data in the default state is displayed. Return and repeat the same procedure again. On the other hand, when it is determined that the traveling road is an expressway (step S31: YES), the process proceeds to step S32.

  In step S32, the display control unit 44 has operation buttons (for example, “track list” button and “group list” button, which will be described later) related to the reproduction of music in the fourth layer, which is the lowest layer of the operation menu data, in the highest layer. The level assignment content is changed so as to become a certain first level, and the operation menu data is updated. Then, an image representing an operation button related to music reproduction assigned to the first layer of the updated operation menu data is superimposed on the electronic map around the current location and displayed on the display 15. Thereafter, the process returns to step S30. In addition, the procedure of this step S32 corresponds to the display step described in each claim.

  FIG. 18 is a diagram illustrating an example of the contents of the operation menu data in the default state. Unlike FIG. 3 described above, a “CD” button, a “hard disk” button, A “flash memory” button and the like are illustrated, and a “track list” button and a “group list” button associated with the “hard disk” button are illustrated in the fourth layer. FIG. 19 is a diagram showing an example of the contents of the operation menu data updated in step S32, and FIG. 20 is a diagram showing an example of display on the display 15 at this time.

  As shown in FIG. 18, in the operation menu data in the default state, the “music playback” button includes a “CD” button, a “hard disk” button, and a “music” button for selecting a storage medium storing music data to be played back. A “flash memory” button and a “return” button are associated with each other. These associated operation buttons are assigned to the third hierarchy. Further, the “hard disk” button displays a “track list” button for displaying music data to be reproduced as a list of music names, and a list of grouping names obtained by grouping the music data to be reproduced for each artist. A “group list” button and a “return” button are associated with each other. These associated operation buttons are assigned to the fourth hierarchy, which is the lowest hierarchy.

  Then, as shown in FIG. 19, the display control unit 44 assigns the “track list” button and the “group list” button assigned to the fourth hierarchy of the operation menu data in the first hierarchy shown in FIG. In addition, for the other operation buttons, the level assignment contents are changed so that each level is one level lower. Similarly to the above, a “return” button is assigned to the first hierarchy. As a result, as shown in FIG. 20, on the display 15, images representing the “menu” button and the “view” button changed to the second hierarchy are not displayed, and the “track list” changed to the first hierarchy is displayed. An image representing each of the button and the “group list” button is displayed superimposed on the electronic map. In the example shown in FIG. 20, a highway traveling display HW indicating the next service area information, interchange information, etc. is displayed on the electronic map, and the “track list” button changed to the first hierarchy is displayed. The “group list” button is displayed on the electronic map that is not on the expressway travel display HW, but may be displayed on the expressway travel display HW.

  Returning to FIG. 14, while the vehicle 1 is traveling on the highway, the display control unit 44 repeats Steps S30 to S32 and displays the “Track List” button and the “Group List” button as shown in FIG. Is displayed on the electronic map. When the vehicle 1 descends from the expressway, as described above, the display control unit 44 determines that the travel road is not an expressway (step S31: NO), and returns to the above-described step S3. As a result, the operation menu data updated in step S32 is returned to the operation menu data in the default state, so that images representing the “track list” button and the “group list” button are not displayed.

  When the display position of the image representing the “track list” button displayed on the display 15 is touched by the user while driving on the highway, for example, the music playback software different from the navigation program is activated by the CPU 7. ,Operate. As a result, a list of grouping names obtained by grouping music data to be reproduced for each artist is displayed on the display 15.

  Moving to FIG. 21, in step S33, the display control unit 44 operates buttons related to a rest area search for the fourth hierarchy, which is the lowest hierarchy of the operation menu data (for example, a “convenience store” button, a “park” button, which will be described later, The level assignment content is changed so that the “Road Station” button) becomes the first level which is the highest level, and the operation menu data is updated. Then, an image representing each of the various operation buttons related to rest area search assigned to the first hierarchy of the updated operation menu data is superimposed on the electronic map around the current location and displayed on the display 15.

  FIG. 22 is a diagram illustrating an example of the contents of the operation menu data in the default state. Unlike FIG. 3 described above, the operation buttons associated with the “rest” button are illustrated in the fourth layer. FIG. 23 is a diagram illustrating an example of the contents of the operation menu data updated in step S33, and FIG. 24 is a diagram illustrating an example of display on the display 15 at this time.

  As shown in FIG. 22, in the operation menu data in the default state, the “rest” button has a “convenience store search function around the current location, a park search function, and a road station search function”. A “convenience store” button, a “park” button, a “road station” button, and a “return” button are associated with each other. These associated operation buttons are assigned to the fourth hierarchy, which is the lowest hierarchy.

  Then, as shown in FIG. 23, the display control unit 44 has the “convenience store” button, the “park” button, and the “roadside” assigned to the fourth level of the operation menu data in the default state shown in FIG. The “station” button is set to the first hierarchy, and the contents of the hierarchy allocation are changed so that each of the other operation buttons has a lower hierarchy. Similarly to the above, a “return” button is assigned to the first hierarchy. As a result, as shown in FIG. 24, images representing the “menu” button and the “view” button changed to the second hierarchy are not displayed on the display 15, and the “convenience store” changed to the first hierarchy is displayed. Images representing each of the button, the “park” button, the “road station” button, and the “return” button are displayed superimposed on the electronic map.

  Returning to FIG. 21, in step S <b> 34, the display control unit 44 displays an image representing each of the “convenience store” button, the “park” button, and the “road station” button displayed on the display 15 in step S <b> 33. Then, it is determined whether or not the display position of the image representing the operation button related to any rest place search has been touched by the user. If it is determined that any one of the operation buttons has been touched (step S34: YES), the process proceeds to step S35.

  In step S35, the display control unit 44 executes a search command corresponding to the image (operation button related to rest area search), searches for rest areas around the current location based on facility information included in the map data, The search result is displayed on the display 15 so as to be superimposed on the electronic map. Thus, the process ends.

  FIG. 25 is a diagram illustrating an example of display on the display 15 in step S35 when the “park” button is operated in step S34. As shown in FIG. 25, the display 15 displays a park mark PA representing a park extracted in the vicinity of the current location, and colors and displays the site range of the park. When this search result is displayed, the images representing the “convenience store” button, “park” button, and “road station” button disappear, and the operation buttons are only images representing the “return” button. Is displayed. In the example shown in FIG. 25, as described above, not only the position of the park is displayed, but also detailed information (park name, presence / absence of public toilet, etc.) may be displayed. Further, when the user operates a desired park mark PA among the displayed parks, route guidance to the park may be started.

  Returning to FIG. 21, in step S <b> 34, it is determined that the display position of the image representing any one of the “convenience store” button, the “park” button, and the “road station” button is not touched. In the case (step S34: NO), the process proceeds to step S36.

  In step S36, the display control unit 44 calculates an elapsed time after displaying the image representing the operation button related to the rest place search in step S33, and whether or not the elapsed time is equal to or longer than a predetermined time (for example, 30 seconds). Determine whether. If it is determined that the elapsed time is less than the predetermined time (step S36: NO), the process returns to step S34. On the other hand, when it is determined that the elapsed time is equal to or longer than the predetermined time (step S36: YES), the process returns to step S3 described above, and the operation menu data updated in step S33 is returned to the operation menu data in the default state. Repeat the same procedure again.

  In the above flowchart, when the destination (or waypoint) is not set, an example of changing the hierarchy of operation buttons related to searching for restaurants, gas stations, rest areas, and music playback is shown. However, the present invention is not limited to this. For example, when a destination (or waypoint) is set and route guidance to the destination (or waypoint) is being performed, It is also possible to determine the remaining fuel amount and the road type, and to change the hierarchy of operation buttons related to restaurant, gas station, rest area search, and operation buttons related to music playback.

  As described above, the navigation device 100 according to the above-described embodiment includes the route search unit 41 that searches for a route from the current location to the destination, and the display 15 (corresponding to a display unit) by overlapping the route RT on the map based on the map data. An operation menu including at least one operation button for executing a predetermined operation command related to guidance is displayed by using the guidance unit 42 for guiding the vehicle 1 while performing guidance display on the screen and the updatable operation menu data. 15 is a navigation device 100 having a display control unit 44 (corresponding to display control means) to be displayed on the vehicle 15 and detecting a state quantity related to the traveling vehicle 1, such as a current location, a current time, and a gasoline remaining amount. The amount of the operation menu data is small for each level of the operation menu including a plurality of levels. Also has a data structure allocated one operation command, the display control unit 44 updates the operation menu data based on the detection result by the state quantity detection unit 43, it changes the hierarchical assignment content of the operation command.

  In the navigation device 100, when the route from the current location to the destination is searched by the route search unit 41, the route RT is displayed on the display 15 so as to be superimposed on the map. Guidance is performed. At this time, an operation menu including at least one operation button is displayed on the display 15 based on the operation menu data under the control of the display control unit 44. Then, when the user performs a touch operation on the display position of the image representing the displayed operation button, a predetermined operation command related to guidance by the navigation device 100 corresponding to the image (operation button) is executed.

  At this time, in the above embodiment, the operation menu data has a data structure such that an operation menu having a plurality of levels is displayed on the display 15, and a predetermined operation command (operation button) is displayed for each level. ) Is assigned. Thus, an image representing at least one operation button corresponding to the assignment is displayed on the display 15 for each operation menu corresponding to each layer. Therefore, during guidance by the guidance unit 42, an image representing a predetermined operation button is displayed on the operation menu of a certain level on the display 15, and another operation is displayed on the operation menu of another level that is shifted from the level by a predetermined operation. An image representing the button is displayed. The operation buttons relatively higher in the hierarchy have fewer operations for changing the hierarchy, so that the user can perform the operation quickly. Therefore, it takes time for the user to operate because many operations are required.

  With regard to a plurality of operation buttons arranged in each hierarchy of the operation menu, in the above embodiment, the state quantity detection unit 43 is provided to provide state quantities relating to the vehicle 1, such as the current location, the current time, and the remaining amount of gasoline. , Etc. are detected, the operation menu data is updated according to the detection result of the state quantity, and the contents of the hierarchy assignment are changed. As a result, according to the situation estimated from the detection result, the operation buttons that are more likely to be operated change the assignment to a higher hierarchy, and the operation buttons that are less likely to be operated are assigned to a lower hierarchy. Can be changed. Therefore, since the operation buttons that correspond to the various situations at the time of vehicle operation and are highly likely to be operated by the user are positioned in the upper hierarchy of the operation menu data and displayed on the display 15, the user presses the operation buttons. The display position of the represented image can be quickly touched. As a result, the user's operation labor can be greatly reduced, and convenience can be improved.

  In the navigation device 100 in the above embodiment, the display control unit 44 is in a state where the detection result has reached the threshold value based on the comparison result with the predetermined threshold value set for each state quantity related to the vehicle 1. The level assignment content is changed so that the operation buttons related to the quantity are displayed in the operation menu of the higher level than before. Thereby, while responding to various situations at the time of vehicle operation, it is possible to reliably place an operation button having a high operation possibility on the upper level of the operation menu data and display it on the display 15. Further, by using the threshold value, the hierarchy of the operation menu data can be changed smoothly and with high accuracy. Furthermore, if the threshold setting is made variable, user customization, correction of the initial setting after the start of use, and the like are possible.

  In the navigation device 100 in the above embodiment, the display control unit 44 is in a state where the detection result has reached the threshold value based on the comparison result with the predetermined threshold value set for each state quantity related to the vehicle 1. The level assignment content is changed so that the operation buttons not related to the quantity are displayed in the operation menu of the lower level than before. As a result, the operation buttons with low possibility of operation are changed to the lower layer of the operation menu data while adapting to various situations during the operation of the vehicle, and the user is troubled by seeing unnecessary operation buttons. Therefore, it is possible to guide the user to operate the higher-needed operation buttons smoothly without hesitation.

  In the navigation device 100 according to the above embodiment, the state quantity detection unit 43 detects the current location as the state quantity related to the vehicle 1, and the display control unit 44 detects the current location and the destination (or waypoint). Hierarchy allocation so that the “Parking” button related to parking lot search as an operation command is displayed in the higher-level operation menu when the distance is closer than the predetermined distance as a threshold. Change the contents. That is, if the vehicle travels by navigation by the guide unit 42 and approaches a destination (or waypoint) to some extent, there is a high possibility of searching for a parking lot for parking at the destination (or waypoint). Therefore, while the current position is detected by the state quantity detection unit 43 and the distance from the detected current position to the destination is close to a certain extent, the display control unit 44 displays the “parking lot” button related to the parking lot search in the upper hierarchy. Change the level assignment contents of the operation menu data to display in Accordingly, the user can easily perform a contact operation on the display position of the image representing the “parking lot” button, and can quickly perform a parking lot search, thereby improving convenience.

  In the navigation device 100 in the above embodiment, the state quantity detection unit 43 detects the current time as the state quantity related to the vehicle 1, and the display control unit 44 detects the detected current time and a predetermined meal time zone. When the remaining time during the period becomes shorter than the predetermined time as the threshold value, the operation button related to restaurant search as an operation command is displayed in the operation menu of the higher hierarchy so far. Change assignments. That is, if the meal time zone approaches when driving by navigation by the guide unit 42, there is a high possibility of searching for a restaurant for eating. Therefore, while the current time is detected by the state quantity detection unit 43, if the detected time corresponds to a so-called meal time zone, the display control unit 44 operates so as to display the operation buttons related to the restaurant search in the upper hierarchy. Change the hierarchy assignment of menu data. Accordingly, the user can easily perform a contact operation on the display position of the image representing the operation button, and can quickly perform a restaurant search, thereby improving convenience.

  In the navigation device 100 in the above embodiment, the state quantity detection unit 43 detects the remaining amount of fuel as a state quantity relating to the vehicle 1, and the display control unit 44 detects the detected remaining fuel level and a predetermined fuel limit. When the difference between the two is less than the predetermined amount as the threshold, the “Gas station” button for the gas station search as an operation command is displayed in the operation menu at a higher level than before. Thus, the hierarchy allocation content is changed. That is, if the amount of fuel is reduced when traveling by navigation by the guide unit 42, there is a high possibility of searching for a gas station for refueling. Therefore, while the remaining amount of fuel is detected by the state quantity detection unit 43, and when the detected remaining fuel amount falls below a predetermined threshold value, the display control unit 44 presses the “gas station” button related to the filling station search. Change the level assignment contents of the operation menu data so that it is displayed at a higher level. Accordingly, the user can easily perform a contact operation on the display position of the image representing the “gas station” button, and can perform a gas station search quickly, thereby improving convenience.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit and technical idea of the present invention.

  For example, in the above-described embodiment, there is a case in which the assignment of an operation button having a high possibility of being operated to the highest hierarchy of the operation menu data is changed according to the situation estimated from the detection result of the state quantity related to the vehicle 1. Although described above, it is not always necessary to be in the highest hierarchy. For example, the operation button in the fourth hierarchy may be changed to the second hierarchy, and may be changed to a higher hierarchy that is not the highest hierarchy. Also in this case, since the number of operations for changing the hierarchy can be reduced as compared with the case where the hierarchy is not changed, the user's operation labor can be reduced and the convenience can be improved.

  Further, for example, according to the situation estimated from the detection result of the state quantity related to the vehicle 1, the assignment of the operation button having a low possibility of being operated may be positively changed to a lower hierarchy. For example, when the current time has passed the end time of the meal time zone (or when a predetermined time has elapsed from that time), the user can guess that the meal has already been completed, so the operation button related to restaurant search can be selected. By changing to a lower hierarchy, it is possible to eliminate the annoyance that the user sees unnecessary operation buttons. At this time, instead of simply changing to a lower hierarchy, change the operation button that is unlikely to be operated to the lowest hierarchy, or to cancel the display in the operation menu. May be changed. For example, if the type of road you are driving is an expressway, you can change the “Parking” button to the lowest level or hide it so that the operation buttons that are not likely to be operated in the current situation are displayed. Since it can be in a state close to non-display or non-display as much as possible, troublesomeness caused by displaying operation buttons unnecessary for the user can be reliably eliminated.

  Further, for example, in the above embodiment, the state quantity relating to the vehicle 1 is detected by the state quantity detecting unit 43, but the present invention is not limited to this, and the state quantity relating to the driver (or passenger) is detected and detected. The hierarchy allocation content of the operation menu data may be changed according to the situation estimated from the result. For example, if the driver's body temperature, heart rate, sweating amount, etc. are detected by a predetermined sensor and it is determined that the driver is in a dozing state or a fatigue state based on the detection result, an operation button related to rest area search is displayed. By changing to a higher hierarchy, it is possible to improve convenience for the user, to prevent a vehicle accident caused by dozing or fatigue, and to improve safety.

  Further, for example, the determination time zone in the case of changing the hierarchy of operation buttons related to restaurant or rest place search may be changed depending on the current location (road type or the like). For example, by changing the break time zone so that the number of breaks is more frequent when traveling on an expressway than when traveling on a general road, the convenience and safety of the user are improved. Can be improved.

  Further, for example, in the above embodiment, the case where the operation button related to rest place search is changed to a higher hierarchy when the current time corresponds to the break time zone has been described. When the distance exceeds a predetermined distance, an operation button related to rest place search may be changed to a higher hierarchy.

  In addition, for example, not only an image representing an operation button that is highly likely to be operated is displayed, but also the display mode (color, shape, size, operation, etc.) of the image representing the operation button according to the situation at that time. It may be changed. For example, after displaying an image representing an operation button related to a rest area search, the user can rest more effectively for the driver by emphasizing or increasing the size of the image representing the operation button as time passes. And the convenience and safety of the user can be further improved.

1 Vehicle 15 Display (corresponding to display means)
43 State quantity detection unit (corresponding to acquisition means)
44 Display control unit (equivalent to display control means)
100 Navigation device

Claims (2)

An acquisition means for acquiring the current location;
Display control means for causing the display means to display at least one operation button for executing an operation command for selecting a predetermined facility;
A navigation device comprising:
Having detection means for detecting the road of the current location,
The display control means includes
A navigation device characterized in that the operation button is displayed based on a detection result by the detection means. An acquisition means for acquiring the current location;
Display control means for causing the display means to display at least one operation button for executing an operation command for selecting a predetermined facility;
A navigation method for a navigation device comprising:
A detection process for detecting the road of the current location;
A display step of displaying the operation button based on a detection result of the detection step.

Images