JP4572766B2 - Display control apparatus and display control method - Google Patents

Description

  The present invention relates to a display control device and a display control method for controlling display of road information and route information thereof.

An example of this type of display control apparatus is disclosed in Patent Document 1 or Patent Document 2. According to Patent Document 1, the entire road information is displayed on the main display in the center console, and an auxiliary display is provided inside the instrument panel to display details of the road information displayed on the main display. Yes. According to Patent Document 2, when a sound for notifying that a vehicle is approaching an intersection is generated from a car navigation device, a video signal other than the displayed navigation is switched to a video signal related to navigation. .
JP-A-5-94134 JP 2003-148966 A

  For example, even when the road information is displayed on the display in the head-up display or the center console, the driver needs to visually recognize the display while considering the traffic situation in the traveling direction of the vehicle. Therefore, if the amount of information displayed on the display is small, information that can be confirmed by the driver at a time is limited, which is not preferable. In particular, when a driver approaches a specific position such as a branching intersection or destination or waypoint where traffic conditions should be taken into consideration, for example, in the middle of the route in the direction of travel of the vehicle, it is necessary for the driver to quickly and frequently acquire information about the surrounding area. However, even if the configurations according to Patent Document 1 and Patent Document 2 are combined, a large amount of information cannot be acquired quickly.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a display control device and a display control method capable of quickly acquiring a large amount of information around the specific position when approaching a specific position. is there.

According to the first aspect of the present invention, the position specifying means specifies the current position, and the distance specifying means includes the road information around the current position and the route information from the current position to the destination or waypoint. The distance from the current position to the specific position in the route is specified, and the display control means displays the bird's eye view by decreasing the depression angle without changing the viewpoint height as the distance specified by the distance specifying means becomes shorter. Because the display control is performed on the indicator, when the vehicle approaches the specific position, a lot of information on the traveling direction of the vehicle is displayed on the display around the specific position. When the vehicle approaches the specific position, the driver A lot of information on the surroundings can be acquired.

According to a second aspect of the present invention, when the display control means controls the display of the bird's-eye view with respect to the display by reducing the depression angle, the bird's-eye view is viewed from the viewpoint moved backward with respect to the traveling direction of the vehicle. Is controlled for display.
According to the third aspect of the present invention, the display control means decreases the depression angle at a constant rate from the time when the distance specified by the distance specifying means becomes short and the predetermined distance set in advance before the specific position. Since the bird's-eye view is controlled to be displayed on the display, the display form can be smoothly changed and displayed, and the driver can check the bird's-eye view without feeling uncomfortable.

According to the invention of claim 4 , the distance specifying means specifies the distance from the current position to the next specific position in the route information when the specified distance becomes 0 or less as the specified distance becomes shorter, The display control means increases the depression angle on the condition that the distance from the current position to the next closest specific position is longer than the predetermined distance and controls the bird's eye view display control. The display can be increased and returned to the original display form.

According to the invention of claim 5, in the invention of claim 3, the display control means increases the depression angle and controls the display of the bird's eye view with respect to the display by increasing the depression angle when increasing the depression angle and controlling the display of the bird's eye view. Therefore, the bird's-eye view can be smoothly changed and displayed on the display device, and the driver can check the bird's-eye view without feeling uncomfortable.

According to the invention described in claim 6, in the invention described in claim 3 or 4, when the display control means performs display control of the bird's eye view, in order to reduce the decrease rate of the depression angle with respect to the increase rate of the depression angle, Since the depression angle of the bird's-eye view is slowly reduced and displayed when approaching a specific position as compared to when moving away, the driver can check the bird's-eye view without further discomfort.

According to the seventh aspect of the present invention, in the invention according to any one of the first to fifth aspects, when the distance specifying means becomes less than 0 as the specified distance becomes shorter, The display control means specifies the distance from the current position to the specific position near to the next specific position on the condition that the distance from the current position to the next specific position is longer than a predetermined distance. Since the bird's eye view is displayed and controlled by increasing the depression angle until the depression angle reduction start timing when the distance from the current position satisfies the predetermined condition, it is specified even if the distance between multiple specific positions satisfies the above condition Display control can be performed on the display device at a depression angle corresponding to the distance between the positions, and display can be performed on the display device without causing further discomfort to the driver.

According to the invention of claim 8 , the distance specifying means specifies the distance from the current position to the next specified position in the route information when the specified distance becomes 0 or less as the specified distance becomes shorter, The display control means controls the display of the bird's eye view with respect to the display with a constant depression angle on the condition that the distance from the current position to the next closest specific position is less than or equal to the predetermined distance. A bird's-eye view is displayed on the display, and the driver can check the bird's-eye view of the display without any discomfort.

Hereinafter, an embodiment in which a display control device of the present invention is applied to a vehicle navigation device will be described with reference to FIGS. FIG. 1 is a block diagram showing a schematic electrical configuration of a navigation device.
As shown in FIG. 1, a navigation device 1 includes a control circuit 2, a position detector 3, a map data input device 4, an operation switch group 5, an external memory 6, and a display device connected to the control circuit 2. 7, a voice recognition device 8, a vehicle interface unit 9, a Bluetooth communication unit 10, and a voice circuit unit 11.

The control circuit 2 has a function of controlling the entire operation of the navigation device 1 and is configured by a normal microcomputer. The control circuit 2 has functions as position specifying means, distance specifying means, and display control means.
The position detector 3 includes a geomagnetic sensor 12, a gyroscope 13, a distance sensor 14, and a GPS (Global Positioning System) receiver 15. The position detector 3 is configured to detect the current position of the vehicle while interpolating with the four sensors 12 to 15 and has a highly accurate position detection function. The map data input device 4 is composed of a reading device capable of reading a CD-ROM, DVD-ROM, HDD, or the like, and inputs various data such as map data, map matching data, and voice recognition dictionary data. It is a device.

The operation switch group 5 is configured by a touch switch (touch panel) provided on the upper surface of the display screen of the display 7, a mechanical push switch (not shown) provided in the periphery of the display 7, and the like. . A remote controller (not shown) may be provided as necessary.
The external memory 6 is configured by a reading device such as a memory card, and is a device for inputting map data, music data, video data, and the like. The display 7 is composed of, for example, a color liquid crystal display for displaying various screens, and details of the display form will be described later. The voice recognition device 8 is a device that recognizes a voice input through the voice circuit unit 11. The vehicle interface unit 9 is an input / output device connected to an in-vehicle LAN (not shown).

  The Bluetooth communication unit 10 has a short-range wireless communication function compliant with the Bluetooth communication standard, and is capable of wireless communication connection with an external device having a wireless communication function compliant with the same standard. In addition, although the embodiment provided with a wireless communication function compliant with the Bluetooth communication standard is shown, instead of this, communication may be performed via a wireless communication device compliant with another wireless communication standard.

  When a destination or waypoint is set by operating the operation switch group 5 by a user such as a driver, the control circuit 2 moves from the current position (departure point) to the destination through the waypoint as necessary. It has a function to automatically calculate and set the optimal route. Although not shown, a remote controller can be connected to the navigation apparatus 1, and when this remote controller is operated, the operation signal is given to the control circuit 3 via a remote controller sensor (not shown).

Hereinafter, the operation according to the present embodiment will be described with reference to FIGS.
<Display Control for Display 7 of Control Circuit 2>
The control circuit 2 detects and identifies the current position of the vehicle by the position detector 3 and then performs display control on the display 7. Hereinafter, display control for the display 7 performed by the control circuit 2 will be schematically described. FIG. 2 shows an explanation of the map display range and the preceding road information with respect to the depression angle of the bird's-eye view. In FIG. 2, when the current position of the vehicle is at, for example, R1 and display control is performed at a depression angle of 90 degrees, the control circuit 2 makes the display range of the map relatively small from a predetermined viewpoint SH1 with respect to the display 7. The display control is performed while reducing the information on the preceding road with respect to the traveling direction of the vehicle.

  Further, when the current position is at point B and display control is performed at a depression angle of 70 degrees, for example, the control circuit 2 causes the display 7 to move the viewpoint SH1 backward relative to the traveling direction of the vehicle. The display control is performed by increasing the information on the preceding road with respect to the traveling direction of the vehicle while relatively increasing the display range of the map from SH2. Therefore, if the depression angle is reduced and displayed, the map display range can be expanded and the preceding road information can be increased. Conversely, if the depression angle is increased and displayed, the map display range can be reduced and the preceding road information can be reduced and displayed.

  FIG. 3A to FIG. 3C schematically show examples of display screens of the display device 7. As shown in FIGS. 3A to 3C, the display 7 displays map information around the current position of the vehicle, and a marker M indicating the current position of the vehicle is slightly below the center of the screen. Is displayed. A preset route K is displayed on the screen of the display unit 7. This route K is route information indicating that the vehicle bends at the intersection F as a specific position. A building T is built in the vicinity of this intersection F, and information is read by the map data input unit 4 and displayed on the display unit 7.

  As shown in FIG. 3A, when the depression angle θ is relatively large, for example, 90 degrees, the information X1 ahead of the intersection F in the preceding road information is small. However, the driver can easily confirm the route to the intersection F clearly. Further, as shown in FIG. 3B, when the depression angle θ is decreased from the state shown in FIG. 3A and the display control is performed at 70 degrees, for example, information X2 ahead of the intersection F in the preceding road information is compared. Increase. Further, when the depression angle θ is decreased from the state shown in FIG. 3B and the display control is performed at 45 degrees, for example, the information X3 ahead of the intersection F in the preceding road information is further increased. That is, if the depression angle θ is reduced and display control is performed on the display device 7, the driver can easily and quickly confirm the information ahead from the intersection F.

  When the building T is displayed in the vicinity of the intersection F, as shown in FIG. 3C, when the display control is performed with a relatively small depression angle θ, the building T is three-dimensionally (three-dimensionally) displayed. You may do it. In this case, more practical display can be performed.

<About actual display control>
Hereinafter, an actual display control example when the intersections F continuously exist along the route K will be described with reference to FIGS. 4 and 5A to 5C.
FIG. 4 is a flowchart showing an operation when the control circuit performs display control on the display. 5A to 5C show changes in depression angles when the control circuit performs display control on the display.
5A shows a change in the depression angle θ when the distance between two intersections F1 and F2 (corresponding to a specific position) on the route K is equal to or smaller than a predetermined distance Z1 (for example, 700 m), FIG. FIG. 5B and FIG. 5C show an example of a change in the depression angle θ when the distance between the two intersections F1 and F2 on the route K is longer than the predetermined distance Z1.

  First, when the route K is set, the control circuit 2 sets the depression angle to 90 degrees before the predetermined distance Z1 of the intersection F1 and displays it on the display 7 (step S1: T1 in FIG. 5). ). That is, as shown to Fig.3 (a), the driver | operator can acquire especially the whole state to the intersection F quickly and much information amount.

  Further, the control circuit 2 detects and specifies the current position of the vehicle by the position detector 3 and specifies the distance to the intersection F1 (step S2). When the distance to the intersection F1 is specified, the control circuit 2 determines whether or not it is longer than the predetermined distance Z1 (step S3). When it is determined that this distance is longer than the predetermined distance Z1, the distance to the intersection F1 is determined in step S2. Identify regularly. When the control circuit 2 determines that the distance is equal to or less than the predetermined distance Z1, the control circuit 2 performs display control at a depression angle θ corresponding to the distance (step S4: T2 in FIG. 5).

  The control circuit 2 returns to step S2 until the distance becomes 0 or less (step S5: YES), and performs display control of the bird's eye view on the display 7 while decreasing the depression angle θ at a constant rate (step S4). That is, display control is performed so as to reach the display form of FIG. When the specified distance becomes 0 or less, the control circuit 2 specifies the distance to the next intersection F2 (specific position) (step S6), and determines whether it is longer than the predetermined distance Z1 (step S7).

<When the distance from the intersection F1 to the intersection F2 is shorter than the predetermined distance Z1>
Hereinafter, the case where the distance from the intersection F1 to the intersection F2 is shorter than the predetermined distance Z1 will be described with reference to FIG. When the control circuit 2 determines that the distance to the next intersection F2 is shorter than the predetermined distance Z1, the control circuit 2 performs display control with a constant depression angle θ up to the intersection F2 without changing the depression angle θ from the time when the intersection F1 is reached ( Steps S6 to S9). That is, the control circuit 2 can perform display control on the display unit 7 with the depression angle θ set to the minimum value. As a result, the driver can quickly confirm the front at a glance with a good view.

<When the distance from the intersection F1 to the intersection F2 is longer than the predetermined distance Z1>
Hereinafter, with reference to FIG. 5B and FIG. 5C, a case where it is determined that the distance from the intersection F1 to the intersection F2 is longer than the predetermined distance Z1 when the intersection F1 is reached will be described.
The control circuit 2 performs display control on the display 7 while increasing the depression angle θ at a constant rate (step S10). At this time, the control circuit 2 specifies the distance to the next intersection F2 until the depression angle θ becomes 90 degrees or more and controls the display 7 while increasing the depression angle θ at a constant rate (steps S10, S12, S13). That is, display control is performed on the display 7 while increasing the depression angle θ at a constant rate until reaching the distance Z2 from the previous intersection F1 (T4 in FIGS. 5B and 5C).

When the decrease rate is A [θ / m] and the increase rate is C [θ / m], it is desirable to decrease the decrease rate A of the depression angle θ with respect to the increase rate C of the depression angle θ. This is because it is easier for the driver to confirm that the depression angle θ is displayed as quickly and deeply as possible after the vehicle passes the intersection F1.
However, when the distance between the intersections F1 and F2 is smaller than Z1 + Z2, the display 7 is controlled to increase at a constant rate only when the following predetermined conditional expression is satisfied (step S11).
| Decrease rate A [θ / m] × Distance B [m] from the current position to the next intersection F2 |
> | Increase rate C [θ / m] × Distance D [m] from the previous intersection F1 to the current position |

  When the control circuit 2 does not satisfy the predetermined conditional expression (step S11: NO), the control circuit 2 determines the distance to the next intersection F2 in steps S2 to S4 and decreases the depression angle θ at a constant rate on the display unit 7. On the other hand, display control is performed (see the decrease timing T5 and thereafter in FIG. 5B). In this way, the control circuit 2 controls the display 7 by changing the depression angle θ continuously. Therefore, since the control circuit 2 performs display control by continuously changing the depression angle θ, the driver can check the map information and the like without feeling uncomfortable.

  When display control is performed on a display 7 having a relatively small displayable area, such as the display 7 of the navigation device 1 mounted on a vehicle, how effective information is displayed within the displayable area is a problem. It is. Even when display control is performed on a display with a large information display area, when the display control is performed on an instrument panel or head-up display that is close to the driver's line of sight, the driver's attention to driving is distracted. It is not possible to display and control information other than the information necessary for driving so as not to occur.

  In the present embodiment, when the current position of the vehicle approaches the intersections F1 and F2, the depression angle θ is decreased and display control is performed on the display unit 7, and the traveling direction of the vehicle is reduced while reducing unnecessary exit path direction information. Therefore, the information around the intersections F1 and F2 can be acquired quickly and more, and the driver can easily confirm the state near the intersections F1 and F2 as compared with the conventional configuration.

  In addition, since the control circuit 2 controls the display of the bird's eye view on the display 7 by decreasing the depression angle θ at a constant rate from the predetermined distance Z1 set in advance, the display is performed while suppressing the driver's uncomfortable feeling. Can be made.

Further, the control circuit 2 specifies the distance from the current position to the next closest intersection F2 in the route K when the specified distance becomes 0 or less as the specified distance becomes shorter, on condition that it is longer than the predetermined distance Z1. Since the depression angle θ is increased and the bird's eye view is controlled to be displayed on the display unit 7, the original display mode can be restored.
When the control circuit 2 increases the depression angle θ and controls display of the bird's-eye view, the control circuit 2 increases the display at a certain rate C and controls the display of the bird's-eye view with respect to the display device 7. .
Since the control circuit 2 performs display control on the display unit 7 by reducing the decrease rate A of the depression angle θ with respect to the increase rate C of the depression angle θ, it is possible to display the display while suppressing discomfort to the driver.

The control circuit 2 starts to decrease the depression angle θ in which the distance from the current position to the next closest specific position satisfies the predetermined conditional expression on condition that the distance from the current position to the next closest intersection is longer than the predetermined distance Z1. Since the depression angle θ is increased until the timing T5 and the bird's eye view is displayed and controlled on the display device 7, the driver can check the map information and the like without feeling uncomfortable.
Since the control circuit 2 controls the display of the bird's eye view on the display 7 with the depression angle θ being constant on the condition that the distance from the current position to the next closest intersection F2 is equal to or less than the predetermined distance Z1, the driver feels uncomfortable. Can be displayed while suppressing.

(Other embodiments)
The present invention is not limited to the above embodiment, and for example, the following modifications or expansions are possible.
Although the embodiment has been described in which display control is performed on the display unit 7 by decreasing or increasing the depression angle θ at a constant rate, it is not necessarily required to be a constant rate.
Although the traveling direction of the vehicle has been described as the forward direction of the vehicle, the present invention is not limited to this, and the backward direction of the vehicle may be applied as the traveling direction of the vehicle.
Although the embodiment has been described in which the display control is performed with respect to the distances to the intersections F1 and F2 as specific positions, the present invention is not limited to this. For example, a transit point, a destination, a re-set intersection when rerouted, etc. You may apply to.

1 is a schematic block diagram showing an embodiment of the present invention. Illustration of display range according to depression angle Explanatory drawing of the display range according to the depression angle ((a) has a large depression angle, (b) has a depression angle, and (c) has a small depression angle) Flow chart showing operation Explanatory drawing showing the depression angle according to the current position

Explanation of symbols

  In the drawings, reference numeral 1 denotes a navigation device (display control device), and 2 denotes a control circuit (position specifying means, distance specifying means, display control means).

Claims (10)

Position specifying means for specifying the current position;
Distance specifying means for specifying the distance from the current position to the specific position in the route among the road information around the current position and the route information from the current position to the destination or waypoint, etc.,
Display control means for controlling the display of the bird's eye view with respect to the display by reducing the depression angle without changing the height of the viewpoint as the distance specified by the distance specifying means becomes shorter, Display control device. When the display control means controls the display of the bird's eye view with respect to the display by reducing the depression angle, the display control means controls the display of the bird's eye view with respect to the display from the viewpoint in which the viewpoint is moved backward with respect to the traveling direction of the vehicle. The display control apparatus according to claim 1 . As the distance specified by the distance specifying means becomes shorter, the display control means reduces the depression angle at a constant rate from the predetermined distance before the specific position and displays a bird's eye view on the display. 3. The display control device according to claim 1 , wherein display control is performed for the display control device. The distance specifying means specifies the distance from the current position to the next specified position in the route information when the specified distance becomes 0 or less as the specified distance becomes shorter,
The display control means controls the display of the bird's eye view by increasing the depression angle on the condition that the distance from the current position to the next closest specific position is longer than the predetermined distance. The display control apparatus according to any one of 1 to 3. 5. The display control according to claim 4, wherein the display control means controls the display of the bird's eye view with respect to the display by increasing the depression angle at a constant rate when the bird's eye view is displayed and controlled by increasing the depression angle. apparatus. 6. The display control apparatus according to claim 4, wherein when the display control means performs display control of the bird's eye view, the decrease rate of the depression angle is reduced with respect to the increase rate of the depression angle . The distance specifying means specifies the distance from the current position to the next specified position in the route information when the specified distance becomes 0 or less as the specified distance becomes shorter,
The display control means is provided on the condition that the distance from the current position to the next closest specific position is longer than the predetermined distance, and the distance from the current position to the next specific position is a depression angle satisfying the predetermined condition. The display control device according to claim 1, wherein the bird's eye view is displayed and controlled by increasing the depression angle until a decrease start timing . The distance specifying means specifies the distance from the current position to the next specified position in the route information when the specified distance becomes 0 or less as the specified distance becomes shorter,
The display control means controls the display of the bird's-eye view with the depression angle being constant on the condition that the distance from the current position to the next closest specific position is not more than the predetermined distance. Or the display control device according to any one of 7 to 7. The process of identifying the current location,
A process of specifying a distance from the current position to a specific position in the route in the route information from the specified current position to the destination or waypoint, etc .;
A step of displaying the road information and the route information around the current position on the display by a bird's eye view by decreasing the depression angle without changing the height of the viewpoint as the specified distance becomes shorter. A display control method characterized by the above. 10. When displaying the bird's-eye view with a bird's-eye view while reducing the depression angle, the bird's-eye view is controlled to be displayed on the display from a viewpoint shifted backward with respect to the traveling direction of the vehicle. The display control method described.

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