JP2014119339A - Navigation device, screen display method, and screen display program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a navigation device, a screen display method, and a screen display program, which enables changing of the display sizes of a map screen and an AV screen without requiring a cumbersome setup operation by controlling the display sizes of the map screen and AV screen on the basis of a past passage history.SOLUTION: A navigation device, capable of performing two-screen displaying of a map screen and an AV screen, includes: a present position identification part for identifying a present position; a passage history storage part for storing a passage history; a passage times obtainment part for obtaining the number of times of past passages at the present position identified by the present position identification part on the basis of the passage history stored in the passage history storage part; and a display control part for controlling display sizes of the map screen and AV screen on the basis of the passage times obtained by the passage times obtainment part.

Description

  The present invention relates to a navigation device, a screen display method, and a screen display program that display a navigation screen and an AV screen in a two-screen display.

In general, a navigation device detects a current position, reads map data around the current position from a storage medium (for example, a hard disk or a flash memory) that stores map data, and displays a map on a screen. In addition, a current position mark indicating the current position is displayed on the displayed map so that it is possible to determine where the user is currently located.
Furthermore, a route (for example, a recommended route, a distance priority route, a general route priority route, etc.) satisfying a predetermined condition from the departure point (for example, current position) to the destination so that the user can go to a desired position without hesitation. And the searched guidance route is superimposed on the map. In addition, if there are points that need a right or left turn, such as an intersection or a branch point, on the searched guidance route, voice guidance such as "Turn left at the next intersection" or "It is 200 meters ahead right." In addition, guidance images of intersections and branching points are displayed to guide the guide route to the destination to the user.

  In such a navigation device, it is possible to store a road history that the user has traveled in the past as a travel history. Then, based on the traffic history, the number of past traffic on the road that the user has traveled is determined. When the number of traffic is large, that is, when the user is traveling on a road familiar to the user, guidance guidance is not performed. On the other hand, when the number of times of traffic is small, that is, when the user is traveling on a road that is unfamiliar to the user, there is disclosed a technique for performing control so as to guide the guidance route (Patent Documents 1 and 2) . By doing this, even when approaching a guide point such as an enlarged intersection map while the AV screen is displayed, display of the enlarged intersection map and interruption of voice guidance are suppressed while the user is accustomed to the road. Route guidance is performed only when necessary.

Japanese Patent Laid-Open No. 11-201770 JP 2006-313085 A

By the way, in recent years, a navigation device can divide a display screen into two and display two different images. For example, a map image can be displayed on a right-side screen divided into two, and a left-hand side can be displayed. By displaying the AV image on the screen, the driver can check the map and the passenger can enjoy the AV screen such as the television and the music information being played back. In this two-screen display, the display ratio of the right screen and the left screen is fixed (for example, the display ratio of the right screen and the left screen is 6: 4), the map screen is displayed on one side, and the AV screen is displayed on the other side. The user can freely set whether to display.
Here, if the user (driver) is passing normally and is passing the familiar road, the need for a map screen display is low, and on the other hand, the user (driver) is passing an unfamiliar road that is not normally used. Since the need for map screen display increases, the AV screen display size should be set larger than the map screen during familiar road traffic, and the AV screen display from the map screen for unfamiliar roads. Although the user wants to set a smaller size, the user has to change the setting every time depending on the road or place in which he is traveling, and feels that the setting operation is troublesome.

  Furthermore, the road set as the guide route may include not only roads that have been used for the first time, but also roads that have been used several times in the past. On many roads, the driver often does not need the intersection guidance and may feel annoyed by the enlarged view of the intersection being displayed. For example, when searching for a route from your home to your destination when you go somewhere far from your home, the vicinity of your home is usually used and you will get used to it. However, the area around the destination is often an unfamiliar road, and even if the display of the enlarged intersection is a hindrance to viewing the AV screen, it is desirable to display the enlarged intersection.

  In Patent Document 1 and Patent Document 2, route guidance is suppressed based on past traffic histories for roads that have been used to a large number of traffic, but consideration is given to two-screen display of a map screen and an AV screen. However, since it is control whether route guidance is performed or not, the two-screen display function for viewing both the map screen and the AV screen cannot be effectively utilized.

  From the above, the object of the present invention is to determine the degree of recognition of a road that is being traveled based on the past travel history, and to control the display size of the map screen and the AV screen according to the determination result. An object of the present invention is to provide a navigation device, a screen display method, and a screen display program capable of displaying a map screen and an AV screen with a screen size reflecting the user's intention without performing complicated setting operations.

  In order to solve the above problems, a navigation device according to the present invention is a navigation device capable of simultaneously displaying a navigation screen and an AV screen, and includes a current position specifying unit for specifying a current position, and a traffic for storing a traffic history. Acquired by a history storage unit, a traffic number acquisition unit that acquires the number of traffics at the current position specified by the current position specifying unit based on the traffic history stored in the traffic history storage unit, and the traffic number acquisition unit A display control unit for controlling the display size of the navigation screen and the AV screen according to the number of times of traffic.

  Preferably, the display control unit controls the display size of the navigation screen to be reduced as the number of passes increases, and the display control unit detects an aspect ratio of the AV screen. Then, the detected aspect ratio is maintained and the display size of the AV screen is controlled.

  Preferably, the display control unit controls to display an intersection enlarged view on the display unit when the number of passes is less than a predetermined value, and when the number of passes is a predetermined value or more, Is controlled so as not to be interrupted and displayed on the display unit.

  A screen display method in a navigation device capable of simultaneously displaying a navigation screen and an AV screen according to the present invention includes a first step of specifying a current position, a second step of storing a traffic history, and the stored traffic history. And a fourth step of controlling the display size of the navigation screen and the AV screen in accordance with the acquired number of passes, based on the acquired number of passes. .

  A screen display program for operating a computer capable of simultaneously displaying a navigation screen and an AV screen according to the present invention includes a first step for specifying a current position in the computer, a second step for storing a traffic history, Based on the stored traffic history, a third step of acquiring the number of traffics at the specified current position, and controlling the display size of the navigation screen and the AV screen according to the acquired number of traffics And a fourth step.

According to the present invention, when the number of times of traffic is large based on past traffic history, the display size of the AV screen is increased and the display size of the map screen is decreased, so that the user is traveling on a familiar road. The display ratio of the AV screen is increased, and the map screen display ratio is increased while traveling on an unfamiliar road, so that the user's intention can be reflected without performing complicated setting operations. It is possible to display a map screen and an AV screen by size.
Furthermore, when setting the guide route, in addition to controlling the display size of the above two screens, it is possible to reflect the user's intention more by suppressing the interrupt of the route guidance of the guide route based on the past traffic history. Become.

It is a figure which shows the structure of the navigation apparatus which concerns on this invention. It is a figure which shows the example of the traffic history table which memorize | stores the traffic history which concerns on this invention. It is a figure which shows the example of a display of 2 screen displays of the map screen and AV screen which concern on Example 1. FIG. 3 is a flowchart of two-screen display control (display size control) of the navigation device according to the first embodiment. It is a figure which shows the example of the 2 screen display by the guidance route search result which concerns on Example 1, and 2 screen display control. It is a flowchart of the interruption display control of the intersection enlarged view of the navigation device according to the present invention. It is a figure which shows the screen transition at the time of the interruption display of 2 screen control which concerns on Example 1, and an intersection enlarged view. 12 is a flowchart of two-screen display control (display size control) of the navigation device according to the second embodiment. It is a figure which shows the example of the 2 screen display by the guidance route search result which concerns on Example 2, and 2 screen display control. It is a figure which shows the screen transition of the interruption display of 2 screen control which concerns on Example 2, and an intersection enlarged view. It is a figure which shows the example of the 2 screen display of the map screen and AV screen which concern on a modification. It is a figure which shows the example of the traffic history table which memorize | stores the traffic history which concerns on a modification.

  A navigation device according to an embodiment to which the present invention is applied will be described below with reference to the drawings. As a preferred embodiment, an in-vehicle navigation device mounted on a vehicle will be described as an example.

FIG. 1 is a diagram showing a configuration of an in-vehicle navigation device 1 according to the present invention.
The operation unit 11 is for accepting various instruction operations in the navigation device 1 and is configured by various buttons, a touch panel attached to the display unit 52, and the like. The input instruction operation is transmitted to the navigation control unit 20 or the AV control unit. Output to 42.

  The GPS receiver 12 receives GPS information (information on time and orbit) distributed from a GPS (Global Positioning System) satellite, and outputs the received GPS information to the navigation control unit 20.

  The autonomous navigation sensor 13 includes an angle sensor such as a gyro that detects a rotation angle, a distance sensor that generates a pulse at every constant travel distance, and the like, and detects information such as the vehicle speed, acceleration (angular velocity), and direction of the vehicle. Then, the detection result is output to the navigation control unit 20.

  The VICS (registered trademark) receiver 14 receives traffic information transmitted from a traffic information transmission source (provider) and outputs the traffic information to the navigation control unit 20. This traffic information is information such as the current congestion condition (congestion condition), traffic prohibition information due to construction, traffic accident information, and the like, and is used when displaying congestion information or searching for a route.

  The map data storage unit 15 is configured by a hard disk and stores map data. Map data consists of road data consisting of information such as links, nodes, road names, traffic conditions, and traffic signs, background data consisting of information such as points, polylines, polygons and text, and route calculation cost information for nodes and links. It is composed of facility data including information such as route calculation data, area name, address, zip code, and POI data indicating the attributes (position, name, address, type, etc.) of POI (Point Of Interest). These map data are managed in a rectangular unit called a leaf for each predetermined geographical area, and each leaf has a plurality of levels according to the degree of detail of the map, for example, the lowest level indicating the most detailed map. It is managed in a hierarchical state for each of a plurality of levels from (level 0) to the highest level (for example, level 2) indicating the simplest map.

  The traffic history storage unit 16 stores a traffic history table in which a link ID is associated with a past traffic count for the link ID as a past traffic history (FIG. 2). For example, since the link ID “0x0001” is a link that has never been passed in the past, “0” is stored as the number of passes, and the link ID “0x2001” is a link that is frequently passed. “33” is stored as the number of times. Further, the traffic history storage unit 16 temporarily stores the previously detected link ID in the traffic history storage control by the traffic history control unit 26 described later, separately from the traffic history table.

  The navigation control unit 20 is configured using a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. The CPU stores various programs stored in the ROM into a work area. The navigation device 1 executes various processes based on various information and commands that are input. The processing includes (1) current position specifying control such as detection of the current position of the user and map matching, (2) readout control for reading out map data around the current position, and (3) operations for generating various menu screens and setting screens. Screen generation control, (4) Destination setting control for setting a destination, (5) Route search control for searching for a guidance route to the destination, (6) Traffic history control for storing a traffic history, (7) Number of times of traffic The number of traffic acquisition control for acquiring

  The current position specifying unit 21 specifies the current position (coordinates) based on information input from the GPS receiver 12 and the autonomous navigation sensor 13. At this time, current position correction such as map matching is performed as necessary. Then, the current position specifying unit 21 outputs the specified current position to each of the map reading control unit 22, the route searching unit 25, the travel history control unit 26, the number of times acquisition unit 27, and the route guide unit 35. The current position specifying unit 21 specifies the current position every predetermined time or whenever the current position changes.

  When the current position is input from the current position specifying unit 21, the map reading control unit 22 reads the input map data around the current position from the map data storage unit 15 and outputs it to the map drawing unit 31 described later.

  The operation screen generation unit 23 generates various menu screens, setting screens, and the like according to various operation instructions from the operation unit 11 and outputs them to the display control unit 51 described later. For example, when the user performs a destination setting operation, the operation instruction is output from the operation unit 11 to the operation screen generation unit 23, and the operation screen generation unit 23 generates a destination selection screen and outputs it to the display control unit 51. To do.

  The destination setting unit 24 searches for a facility or a spot desired to be set as a destination from the destination selection screen generated by the operation screen generation unit 23 by address search, facility name search, genre search, or telephone number search. When a facility or point is selected, the selected facility or point is set as the destination. Then, the destination setting unit 24 outputs the set destination information to the route search unit 25.

  The route search unit 25 uses a route search algorithm such as the Dijkstra method to convert the route from the current position input from the current position specifying unit 21 to the destination input from the destination setting unit 24 into various route search conditions. Search for a matched route. At this time, the route search unit 25 searches in consideration of traffic information output from the VICS receiver 14. Here, the route search conditions include a time priority condition in which the required time to the destination is the shortest, a distance priority condition in which the distance to the destination is the shortest, and a general road priority condition in which the toll road is not used. Then, the route search unit 25 searches for a route according to each of the search conditions, and when the user selects a desired route search condition from the result, sets the selected route search condition as a guide route, which will be described later. Stored in the guidance route memory 32.

Based on the current position input from the current position specifying unit 21, the traffic history control unit 26 specifies the currently passing link, and detects the link ID of the link. Then, it is determined whether or not the detected link ID is the same as the previously detected link ID temporarily stored in the traffic history storage unit 16, and if it is determined that the link ID is the same, the traffic history control unit 26 specifies the specified link. The ID is temporarily temporarily stored in the traffic history storage unit 16 again. On the other hand, if it is determined that they are not the same, the traffic history control unit 26 reads the traffic history table from the traffic history storage unit 16, adds “1” to the traffic count for the specified link ID, and stores the traffic history table 16 in the traffic history storage unit 16 again. . Then, the traffic history control unit 26 changes the link ID detected this time to the previously detected link ID temporarily stored in the traffic history storage unit 16 and stores it. The traffic history storage control performed by the traffic history control unit 26 is performed every time the current position is input from the current position specifying unit 21.
In addition, the traffic history control unit 26 may be able to delete information (the number of traffics) in the traffic history table stored in the traffic history storage unit 16 in accordance with a user operation instruction.

  When the current position is input from the current position specifying unit 21, the number-of-passages acquiring unit 27 specifies the currently passing link (link ID) based on the current position, and is stored in the passing history storage unit 16. The number of past passes for the link ID is acquired from the pass history table, and is output to the display control unit 51 and the voice control unit 53.

  The map drawing unit 31 draws a map around the current position from the current position input from the current position specifying unit 21 and the map data around the current position input from the map readout control unit 22, and generates map synthesis data as map drawing data. To the unit 34. Image data such as a current position mark indicating the current position used when drawing a map around the current position and icons representing various information displayed on the map screen are stored in the map drawing unit 31.

  The guide route memory 32 stores the position data of all nodes constituting the guide route searched and set by the route search unit 25 as guide route data in the order of travel from the departure point to the destination.

  The guide route drawing unit 33 generates guide route drawing data for highlighting the guide route on the map based on the guide route data stored in the guide route memory 32, and outputs it to the map composition unit 34. The guide route drawing unit 33 does not generate guide route drawing data when the guide route data does not exist in the guide route memory 32.

  The map synthesis unit 34 synthesizes the map drawing data input from the map drawing unit 31 and the guidance route drawing data input from the guidance route drawing unit 33 and outputs the combined data to the display control unit 51 as a map screen.

  The guide route guide unit 35 refers to the current position input from the current position specifying unit 21 and the guide route data stored in the guide route memory 32, and the current position is a predetermined distance from the guide intersection (guide point). Upon arrival, an enlarged map of the intersection at the guidance intersection is generated and output to the display control unit 51, and a guidance message at the guidance intersection (for example, "Turn left for 300m ahead. The gas station is a landmark") is generated. To the voice control unit 53. Various image data used for these intersection enlarged views, various guidance voice data used for voice guidance, and the like are stored in the guidance route guide unit 35.

The AV device 41 is configured by one or more devices of a Disc player, a memory card reader, and a broadcast receiver. The disc player reads information stored on the CD or DVD and outputs it to the AV control unit 42 as AV data. The memory card reader reads information stored in an SD card, a USB memory, or the like, and outputs it as AV data to the AV control unit 42. The broadcast receiver receives broadcast radio waves emitted from a broadcast station, and outputs information such as audio, video, and text to the AV control unit 42 as AV data. For example, a radio wave emitted from a television broadcast station or a radio wave emitted from a radio broadcast station is received.
In addition to the various devices described above, an external device such as a multi-function mobile phone or a portable information terminal that can output AV data imported from an AV data download site can be connected.

  The AV control unit 42 separates AV data input from the AV device 41 into image data and audio data, outputs the image data as an AV screen to the display control unit 51, and outputs the audio data as AV audio to the audio control unit 53. Output.

When the display control unit 51 performs two-screen display of the map screen input from the map composition unit 34 and the AV screen input from the AV control unit 42, the display control unit 51 inputs the road ( The display size of each screen of the map screen and the AV screen is controlled based on the number of times of (link) traffic, and two screens are displayed on the display unit 52.
For example, when the display control unit 51 performs a two-screen display of a map screen input from the map composition unit 34 and an AV screen input from the AV control unit 42, the display control unit 51 is currently passing through the traffic number acquisition unit 27. It is determined from the number of times the road (link) passes is less than a predetermined value (for example, “16” times) or more than a predetermined value. Then, if the determined number of times of traffic is less than a predetermined value, the display control unit 51 has a first display ratio that makes the map screen larger than the AV screen (for example, the display ratio between the map screen and the AV screen is 7 to 3). The display size of each screen is controlled so that two screens are displayed on the display unit 52 (FIG. 3A). On the other hand, if the determined number of times of traffic is greater than or equal to a predetermined value, each screen has a second display ratio (for example, the display ratio between the map screen and the AV screen is 3 to 7) that is smaller than the AV screen. The display size is controlled, and two screens are displayed on the display unit 52 (FIG. 3B).

Furthermore, when an enlarged intersection map is input from the guidance route guide unit 35, the display control unit 51 is less than a predetermined value or a predetermined value based on the number of times the road (link) currently being input input from the number-of-passages acquisition unit 27. When the number of times of traffic is less than a predetermined value, an interrupt display of an enlarged intersection is displayed. On the other hand, when the number of times of traffic is greater than or equal to a predetermined value, the interrupt display of an enlarged view of the intersection is not performed. Control. The predetermined value at the time of interrupt display control in this enlarged intersection view may be the same value or a different value from the predetermined value at the time of controlling the two-screen display.
Further, when various screens are input from the operation screen generation unit 23, the display control unit 51 displays the input screen on the display unit 52.

  The voice control unit 53 performs decoding processing, D / A conversion processing, and the like on the AV voice input from the AV control unit 42 and the guidance voice output from the guidance route guide unit 35 and outputs the voice from the speaker 54. .

  Next, the two-screen display control process of the navigation device 1 according to the first embodiment of the present invention will be described with reference to FIG. Here, it is assumed that the link history and the number of passes are stored in the pass history storage unit 16 as shown in FIG. Further, it is assumed that a guide route is set by a user operation, and guide route data is stored in the guide route memory.

The current position specifying unit 21 specifies the current position based on information input from the GPS receiver 12 and the autonomous navigation sensor 13 (step S101).
The map reading control unit 22 reads the input map data around the current position from the map data storage unit 15 and outputs it to the map drawing unit 31. Then, the map drawing unit 31 draws a map, a current position mark, and the like from the input map data, and outputs them as map drawing data to the map synthesis unit 34.
On the other hand, the guide route drawing unit 33 generates guide route drawing data based on the guide route data stored in the guide route memory 32 and outputs the guide route drawing data to the map composition unit 34.

The map synthesis unit 34 synthesizes the input map drawing data and the guidance route drawing data, and outputs the combined map drawing data to the display control unit 51 as a map screen.
While the map screen is output to the display control unit 51, the AV control unit 42 separates AV data input from the AV device 41 into image data and audio data, and outputs the image data as an AV screen to the display control unit 51. To do.

Subsequently, the number-of-passages acquisition unit 27 specifies the currently passing link (link ID) from the current position specified by the current position specifying unit 21 (step S102). Then, the traffic number acquisition unit 27 acquires the traffic count for the link ID from the traffic history table stored in the traffic history storage unit 16, and outputs the acquired traffic count to the display control unit 51 (step S103).
The display control unit 51 determines whether the number of times of traffic input from the number of times of traffic acquisition unit 27 is less than a predetermined value (for example, “16” times) or greater than a predetermined value (step S104).

If it is determined in step S104 that the number of passes is less than the predetermined value, the display control unit 51 makes the map screen input from the map synthesis unit 34 larger than the AV screen input from the AV control unit 42. The display size of each screen is controlled to achieve the first display ratio (step S105).
On the other hand, if it is determined in step S104 that the number of times of traffic is greater than or equal to the predetermined value, the display control unit 51 makes the map screen input from the map synthesis unit 34 smaller than the AV screen input from the AV control unit 42. The display size of each screen is controlled so as to be the second display ratio (step S106).

Then, the display control unit 51 displays each screen controlled in step S105 or step S106 on the display unit 52 in two screens (step S107).
This two-screen display control is repeatedly performed every time the current position changes.

Specifically, a two-screen display example of the two-screen display control according to the first embodiment will be described with reference to FIG.
FIG. 5A is a diagram illustrating a result of searching for a guide route from the current position to the destination by the user, and a guide route indicated by a broken line RP is set.
ABC City is the administrative world where the user's home exists, and the roads in the area indicated by A1 are roads that are familiar to the user (for example, have passed 16 times or more). On the other hand, the city of XYZ is the administrative world where the destination exists, and the roads existing in the area indicated by A2 are roads that have never been used by the user or are not used to passing (for example, 0 to 15 times) It was a road.

  For example, when the user is passing through a road (a position indicated by PO1) immediately after leaving home, the number-of-passage acquisition unit 27 sets the link ID to “0x2001” based on the current position detected by the current position detection unit 21. The traffic number acquisition unit 27 acquires the traffic number “33” for the link ID “0x2001” from the traffic history table stored in the traffic history storage unit 16 and outputs the acquired traffic number to the display control unit 51. The display control unit 51 determines that the road is a road familiar to the user because the input number of times “33” is equal to or greater than the predetermined value “16”, and the display size of the map screen and the AV Control is performed so that the display size of the screen is 3 to 7 (second display ratio), and two screens are displayed on the display unit 52 (FIG. 5B).

  Thereafter, when the user is passing the road around the destination (position indicated by PO2), the number-of-passages acquisition unit 27 sets the link ID to “0x0001” based on the current position detected by the current position detection unit 21. When specified, the number-of-passages acquisition unit 27 acquires the number of passes “0” for the link ID “0x0001” from the passage history table stored in the passage history storage unit 16 and outputs the acquired number of passes to the display control unit 51. The display control unit 51 determines that the road is an unfamiliar road for the user because the input number of times “0” is less than the predetermined value “16”. The display size of the AV screen is controlled to be 7: 3 (first display ratio), and two screens are displayed on the display unit 52 (FIG. 5C).

  In the above example, the case where the guidance route is set has been described. However, when the guidance route is not set, the guidance route drawing data is not input from the guidance route drawing unit 33 to the map synthesis unit 34. Therefore, the map composition unit 34 generates a map screen from only the map drawing data and outputs the map screen to the display control unit 51. Therefore, the map screen displayed on the display unit 52 is a normal map screen around the current position where no guidance route is drawn.

  Next, the interruption control process of the intersection enlarged view of the navigation device 1 according to the first embodiment of the present invention will be described with reference to FIG. It is assumed that a guide route is set by a user operation, and guide route data is stored in the guide route memory.

The current position specifying unit 21 specifies the current position based on information input from the GPS receiver 12 and the autonomous navigation sensor 13 (step S201).
The guide route guide unit 35 acquires guide route data from the guide route memory 32 (step S202). Then, the guidance route guide unit 35 determines whether or not the current position input from the current position specifying unit 21 has come within a predetermined distance from the guidance point of the obtained guidance route data (step S203).

If the guide route guide unit 35 determines that the current position is not within a predetermined distance from the guide point, the guidance route guide unit 35 repeats the process of step S203 until the current position approaches within a predetermined distance from the guide point.
On the other hand, when the guide route guide unit 35 determines that the current position is within a predetermined distance from the guide point, the guide route guide unit 35 generates an intersection enlarged view for the guide point and outputs it to the display control unit 51 (step S204).

Subsequently, the number-of-passages acquisition unit 27 specifies the currently passing link (link ID) from the current position specified by the current position specifying unit 21 (step S205). Then, the traffic count acquisition unit 27 acquires the traffic count for the link ID from the traffic history table stored in the traffic history storage unit 16, and outputs the acquired traffic count to the display control unit 51 (step S206).
The display control unit 51 determines whether the number of traffics input from the traffic number acquisition unit 27 is less than a predetermined value or greater than a predetermined value (step S207).

Here, if it is determined in step S207 that the number of times of passage is less than the predetermined value, the display control unit 51 interrupts and displays the enlarged intersection map input from the guidance route guide unit 35 on the display unit 52.
On the other hand, if the number of times of traffic is greater than or equal to a predetermined value in step S207, the interrupted enlarged view input from the guidance route guide unit 35 is not displayed.
The interrupt display control of this intersection enlarged view is repeatedly performed every time the current position changes.

  For example, in the two-screen display control of the first embodiment, when the interrupt control of the intersection enlarged view is executed, if the predetermined value of the number of times of passing whether or not to perform the interrupt control is set to “16”, FIG. a) During the passage of area A1, because it is a familiar road, two-screen display control is performed according to the second display ratio, but interrupt control of the enlarged intersection map is performed even if the current position approaches the guidance point. Without displaying, the two-screen display of the map screen and the AV screen is continued as it is (FIG. 7A). On the other hand, while passing through the area A2 in FIG. 5 (a), since it is a road that has not been used or has not been used, two-screen display control is performed at the first display ratio, and the guidance point is When the position approaches, interrupt control of the enlarged intersection is performed (FIG. 7B).

  By configuring as described above, when there are a large number of traffics currently being traveled based on past traffic histories, the display size of the AV screen is increased and the display size of the map screen is decreased. When you are on a familiar road, the display ratio of the AV screen increases. On the other hand, when you are on an unfamiliar road, you can increase the display ratio of the map screen. Even if not, the map screen and the AV screen can be displayed with a screen size reflecting the user's intention. Furthermore, when setting the guidance route, in addition to the control of the display size of the above two screens, it is possible to suppress the guidance of the route guidance of the guidance route based on the past travel history, which can reflect the user's intention more. it can.

In the first embodiment, in the two-screen display control process, as shown in FIG. 4, an example is shown in which the past number of times of traffic on the currently passing road is divided into two cases of less than a predetermined value or more than a predetermined value. However, the present invention is not limited to this, and the display size of each screen can be controlled using a plurality of display ratios depending on a plurality of cases. For example, two predetermined values are set, and the number of past passages on the passing road corresponds to any one of less than a first predetermined value, more than a first predetermined value, less than a second predetermined value, and more than a second predetermined value. Can be divided into three cases.
Next, the two-screen display control process when the above three cases are divided will be described in detail with reference to FIG. Here, the configuration of the navigation device of the second embodiment is the same as that of the navigation device 1 of the first embodiment shown in FIG. Further, it is assumed that the link history and the number of passes are stored in the pass history storage unit 16 as shown in FIG. Further, it is assumed that a guide route is set by a user operation, and guide route data is stored in the guide route memory.

The current position specifying unit 21 specifies the current position based on information input from the GPS receiver 12 and the autonomous navigation sensor 13 (step S301).
The map reading control unit 22 reads the input map data around the current position from the map data storage unit 15 and outputs it to the map drawing unit 31. Then, the map drawing unit 31 draws a map, a current position mark, and the like from the input map data, and outputs them as map drawing data to the map synthesis unit 34.
On the other hand, the guide route drawing unit 33 generates guide route drawing data based on the guide route data stored in the guide route memory 32 and outputs the guide route drawing data to the map composition unit 34.

The map synthesis unit 34 synthesizes the input map drawing data and the guidance route drawing data, and outputs the combined map drawing data to the display control unit 51 as a map screen.
While the map screen is output to the display control unit 51, the AV control unit 42 separates AV data input from the AV device 41 into image data and audio data, and outputs the image data as an AV screen to the display control unit 51. To do.

Subsequently, the number-of-passages acquisition unit 27 specifies the currently passing link (link ID) from the current position specified by the current position specifying unit 21 (step S302). Then, the traffic count acquisition unit 27 acquires the traffic count for the link ID from the traffic history table stored in the traffic history storage unit 16, and outputs the acquired traffic count to the display control unit 51 (step S303).
The display control unit 51 determines whether the number of traffics input from the traffic number acquisition unit 27 is less than a first predetermined value, a first predetermined value or more and less than a second predetermined value, or a second predetermined value or more (step S304). ).

Here, if it is determined in step S304 that the number of passages is less than a first predetermined value (for example, “10” times), the display control unit 51 displays the map screen input from the map composition unit 34 and the AV control unit. The display size of each screen is controlled so that the ratio of the display size of the AV screen input from 42 becomes the third display ratio (step S305).
If it is determined in step S304 that the number of times of traffic is greater than or equal to a first predetermined value (for example, “10” times) and less than a second predetermined value (for example, “20” times), the display control unit 51 The display size of each screen is controlled so that the ratio of the display size of the map screen input from the map composition unit 34 and the display size of the AV screen input from the AV control unit 42 becomes the fourth display ratio (step S306). .
Alternatively, if it is determined in step S304 that the number of times of traffic is greater than or equal to a second predetermined value (for example, “20” times), the display control unit 51 and the AV control unit 42 and the map screen input from the map synthesis unit 34. The display size of each screen is controlled so that the ratio of the display size of the AV screen input from step S5 becomes the fifth display ratio (step S307).

Then, the display control unit 51 displays each screen controlled in step S305, step S306, or step S307 on the display unit 52 in two screens (step S308).
This two-screen display control is repeatedly performed every time the current position changes.

Specifically, a two-screen display example of the two-screen display control according to the second embodiment will be described with reference to FIG.
FIG. 9A is a diagram illustrating a result of searching for a guidance route from the current position to the destination by the user, and a guidance route indicated by a broken line RP is set.
ABC city is the administrative world where the user's home exists, and the roads in the area indicated by A3 are roads that are familiar to the user (for example, 20 times or more). In addition, LMN city is an administrative boundary in the middle of the guidance route, and roads existing in the area indicated by A4 sometimes go to facilities etc. existing in this administrative boundary for shopping, and are accustomed to pass to some extent ( For example, a road that has passed 10 times or more. On the other hand, the city of XYZ is an administrative world where the destination exists, and the roads existing in the area indicated by A5 are roads that have never been used by the user or are not used to passing (for example, 0 to 9 times). Road).

  For example, when the user is traveling on a road (position indicated by PO3) immediately after leaving home, the number-of-passages acquisition unit 27 sets the link ID to “0x2001” based on the current position detected by the current position detection unit 21. The traffic number acquisition unit 27 acquires the traffic number “33” for the link ID “0x2001” from the traffic history table stored in the traffic history storage unit 16 and outputs the acquired traffic number to the display control unit 51. The display control unit 51 determines that the road is a road familiar to the user because the inputted number of times of travel “33” is equal to or greater than the second predetermined value “20”, and the display size of the map screen And the display size of the AV screen is controlled to be 2 to 8 (fifth display ratio), and two screens are displayed on the display unit 52 (FIG. 9B).

  Thereafter, when the user is traveling on a road (position indicated by PO4) on the way of the guidance route, the number-of-passages acquisition unit 27 sets the link ID to “0x1002” based on the current position detected by the current position detection unit 21. Specifically, the number-of-passages acquisition unit 27 acquires the number-of-passages “15” for the link ID “0x1002” from the passage history table stored in the passage history storage unit 16 and outputs the acquired number of passes to the display control unit 51. And since the input number of times of travel “15” is not less than the first predetermined value “10” and less than the second predetermined value “20”, the display control unit 51 is accustomed to the user to some extent. However, it is determined that the road is still uneasy, and the display size of the map screen and the display size of the AV screen are controlled to be 4 to 6 (fourth display ratio), and two screens are displayed on the display unit 52. (FIG. 9 (c)).

  Then, when the user is passing the road around the destination (position indicated by PO5), the number-of-passages acquisition unit 27 sets the link ID to “0x0001” based on the current position detected by the current position detection unit 21. When specified, the number-of-passages acquisition unit 27 acquires the number of passes “0” for the link ID “0x0001” from the passage history table stored in the passage history storage unit 16 and outputs the acquired number of passes to the display control unit 51. The display control unit 51 determines that the road is an unfamiliar road for the user because the input number of times “0” is less than the first predetermined value “10”, and displays the map screen. The size and the display size of the AV screen are controlled to be 7 to 3 (third display ratio), and two screens are displayed on the display unit 52 (FIG. 9D).

  As in the first embodiment, an example in which the guidance route is set has been described. However, when the guidance route is not set, the guidance route drawing data is transferred from the guidance route drawing unit 33 to the map composition unit 34. Is not input, the map synthesis unit 34 generates a map screen from only the map drawing data and outputs the map screen to the display control unit 51. Therefore, the map screen displayed on the display unit 52 is a normal map screen around the current position where no guidance route is drawn.

  In the two-screen display control according to the second embodiment, when executing the interrupt control of the intersection enlarged view of FIG. 6, if the predetermined value of the number of times of passing whether or not to perform the interrupt control is set to “20”, FIG. 9 (a) While passing through area A3, because it is a familiar road, two-screen display control is performed according to the fifth display ratio. However, even if the current position approaches the guide point, the intersection enlarged view is interrupted. Control is not performed, and the two-screen display of the map screen and the AV screen is continued as it is ((FIG. 10A). While passing through the area A4 in FIG. Since it is an uneasy place if there is no route guidance yet, two-screen display control is performed with the fourth display ratio, and when the current position approaches the guidance point, interrupt control of the intersection enlarged view is performed ((FIG. 10 (b )) And figure (A) While passing through the area A5, because it is a road that has not been used and has not been used to traffic, a two-screen display is performed with the third display ratio, and when approaching the guide point, Interrupt control is performed ((c) in FIG. 10).

  With the configuration as described above, as in the first embodiment, when the number of times of current traffic is large based on the past traffic history, the display size of the AV screen is increased and the display size of the map screen is decreased. This makes it possible to increase the display ratio of the AV screen while traveling on a familiar road, and to increase the display ratio of the map screen while traveling on an unfamiliar road. Even without complicated setting operations, the map screen and the AV screen can be displayed with a screen size reflecting the user's intention. Furthermore, when setting the guidance route, in addition to the control of the display size of the above two screens, it is possible to suppress the guidance of the route guidance of the guidance route based on the past travel history, which can reflect the user's intention more. it can.

Modified example

In the display size control of the two-screen display control according to the first embodiment and the second embodiment, the display control unit 51 determines whether the link that is currently being passed is past, as shown in FIGS. 9 (b) (c) (d), the example in which the display size of the map screen and the AV screen is controlled based on the ratio to the horizontal size of the screen of the display unit 52 has been described. The unit 51 may analyze the aspect ratio of the input AV screen and maintain the aspect ratio obtained by the analysis to control the display size of the AV screen (FIG. 11).
In this way, for example, when the AV screen displays the music information of the CD being played back, as shown in FIGS. 5 (b) (c) and 9 (b) (c) (d). The display size of the AV screen may be controlled. However, in this case, if the image is a movie, a television, or the like, the aspect ratio is lost, so that the aspect ratio is maintained as shown in FIG. By controlling the display size, it is possible to display the AV screen without destroying the aspect ratio of the video.

Furthermore, in the traffic history table stored in the traffic history storage unit 16 of the navigation device 1 of the present invention, the link ID and the past traffic count for the link ID are stored in association with each other. You may make it memorize | store the past traffic history in association with the same road name and the same road type (national road, prefectural road, city road, etc.). Further, a predetermined area and the past number of times of roads existing in the area may be stored in association with each other. Here, examples of the predetermined area include a division for each administrative boundary, a division for each leaf (mesh) obtained by dividing the map data into rectangles, and a division for each predetermined number of links. For example, when the map leaf ID (mesh) ID obtained by dividing the map data and the past number of roads (links) existing in the mesh ID are stored in association with each other, as shown in FIG. Remembered.
In this way, by storing the traffic name for each road name, road type, and predetermined area, the display size of each screen that is switched for each link can be switched for each certain area.

  Furthermore, in the said this invention, although the vehicle-mounted navigation apparatus mounted in the vehicle was demonstrated to the example, it is applicable not only to this but the system which has each component shown in FIG. For example, the present invention can be applied to a multifunctional mobile terminal such as a smartphone or a portable navigation device.

DESCRIPTION OF SYMBOLS 1 Navigation apparatus 11 Operation part 12 GPS receiver 13 Autonomous navigation sensor 14 VICS receiver 15 Map data memory | storage part 16 Traffic history memory | storage part 20 Navigation control part 21 Current position specific | specification part 22 Map reading control part 23 Operation screen generation part 24 Destination Setting unit 25 Route search unit 26 Traffic history control unit 27 Number of times acquisition unit 31 Map drawing unit 32 Guide route memory 33 Guide route drawing unit 34 Map composition unit 35 Guide route guide unit 41 AV equipment 42 AV control unit 51 Display control unit 52 Display unit 53 Audio control unit 54 Speaker PO1, PO2, PO3, PO4, PO5 Current position mark RP Guide route

Claims (6)

In a navigation device capable of simultaneously displaying a navigation screen and an AV screen,
A current position specifying unit for specifying the current position;
A traffic history storage unit for storing a traffic history;
Based on the traffic history stored in the traffic history storage unit, a traffic count acquisition unit that acquires the traffic count at the current position specified by the current position specifying unit;
A display control unit that controls the display size of the navigation screen and the AV screen according to the number of passes acquired by the pass count acquisition unit;
A navigation device comprising: The display control unit controls the display size of the navigation screen to be reduced as the number of passes increases.
The navigation device according to claim 1. The display control unit detects an aspect ratio of the AV screen, maintains the detected aspect ratio, and controls a display size of the AV screen;
The navigation apparatus according to claim 1, wherein the navigation apparatus is characterized in that The display control unit controls the intersection enlarged view to be interrupted and displayed on the display unit when the number of passes is less than a predetermined value, and the intersection enlarged view is displayed on the display unit when the number of passes is a predetermined value or more. Control not to display interrupts,
The navigation device according to any one of claims 1 to 3, wherein In a screen display method of a navigation device capable of simultaneously displaying a navigation screen and an AV screen,
A first step of identifying the current position;
A second step of storing a traffic history;
A third step of obtaining the number of times of traffic at the specified current position based on the stored traffic history;
A fourth step of controlling the display size of the navigation screen and the AV screen according to the acquired number of passages;
A screen display method for a navigation device, comprising: In a screen display program for operating a computer capable of simultaneously displaying a navigation screen and an AV screen,
In the computer,
A first step of identifying the current position;
A second step of storing a traffic history;
A third step of obtaining the number of times of traffic at the specified current position based on the stored traffic history;
A fourth step of controlling the display size of the navigation screen and the AV screen according to the acquired number of passages;
A screen display program characterized in that the program is executed.

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