JP2014010063A - In-vehicle device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an "in-vehicle device" for displaying as many areas as possible of a navigation image showing a current position or the like on a map displayed by a portable device with satisfactory visibility.SOLUTION: An image portion excluding a part of an upper part of a navigation screen image (a) acquired from a smart phone 2 is extracted as a display object image (b), and the extracted display object image (b) is reduced such that scale reduction in a longitudinal direction is decreased according as it goes upward, and an overall aspect rate is converted so as to be coincident with the aspect rate of a display device 102 of an in-vehicle device 1 (d). Then, the converted image (d) is enlarged/reduced by similarity conversion, and a display navigation image the size of which is the same as that of the screen of the display device 102 is generated, and displayed at the display device 102.

Description

  The present invention relates to a technique for displaying a navigation image representing a current position on a map, which is generated in a portable device and displayed on a built-in display of the portable device, on an external display device.

  As a technique for displaying a navigation image generated on a portable device and displayed on a built-in display of the portable device and indicating a current position on a map on an external display device, the technology can be used when the mobile device is connected to the external display device. By changing the resolution and aspect ratio of the navigation image generated on the device to a resolution and aspect ratio that matches the connected display device, and outputting the generated navigation image from the portable device to the external display device, A technique for displaying a navigation image generated in a portable device on the entire display screen of the display device is known (for example, Patent Document 1).

Japanese Patent No. 4028580

  The above-described technology for changing the resolution and aspect ratio of a navigation image generated in a portable device to a resolution and aspect ratio that matches a connected display device and outputting the same to an external display device is the resolution and aspect of the generated image. It cannot be applied to a portable device that does not have a function of changing the ratio and outputting it to the outside.

  On the other hand, when a navigation image having an aspect ratio that matches a built-in display of a portable device generated in the portable device is displayed on an external display device after being enlarged / reduced, the external display device The entire display screen cannot be used to display the navigation image, the visibility of the navigation image is degraded, the entire navigation image cannot be displayed, and sufficient information cannot be presented to the user. There arises a problem that the navigation image is greatly deformed and sufficient information cannot be presented to the user.

  That is, for example, when the navigation image that matches the built-in display of the portable device is a vertically long image as shown in FIG. 5a and the display screen of the external display device is a horizontally long display screen, When displaying the entire navigation image on an external display device by enlarging / reducing the navigation image by similarity transformation so that the vertical size matches the vertical size of the display screen of the external display device As shown in FIG. 5b, the left and right regions of the external display device are not used for displaying the navigation image. In addition, the navigation image is enlarged / reduced by similarity conversion so that the horizontal size matches the horizontal size of the display screen of the external display device, and is displayed on the entire display screen of the external display device. In this case, as shown in FIG. 5c, only a part of the navigation image in the vertical direction is displayed on the external display device. In addition, the navigation image is enlarged / reduced at different magnifications in the vertical and horizontal directions so that the vertical and horizontal sizes match the vertical and horizontal sizes of the display screen of the external display device. Although it is conceivable to display on the display device, as shown in FIG. 5d, the degree of deformation of the navigation image displayed on the external display device is large, and the visibility of the navigation image is greatly impaired. Become.

  Accordingly, an object of the present invention is to display as many regions of a navigation image having an aspect ratio that matches an internal display of a mobile device generated in the mobile device on an external display device with good visibility. To do.

  In order to achieve the above object, the present invention provides a vehicle apparatus equipped with a display device having a horizontally long display screen to which a portable device can be connected, and the present traveling direction is upward from the connected portable device. The navigation image acquisition means for acquiring a vertically long navigation image that represents the current position at the lower position on the map and the navigation image acquired by the navigation image acquisition means or an upper portion of the navigation image are excluded. As a display navigation image, an image obtained by converting the image so that the scale in the vertical direction becomes smaller in the upper part and the overall vertical and horizontal size matches the vertical and horizontal size of the display screen of the display device is displayed. Display navigation image generation means for generating, and the display navigation image generated by the display navigation image generation means Is an emission image that a display navigation image display means for displaying on said display device.

  In this case, more specifically, the in-vehicle apparatus is configured such that, in the display navigation image generation unit, the navigation image acquired by the navigation image acquisition unit or an image in a region below the navigation image The image is reduced in the vertical direction relative to the horizontal direction so that the vertical scale is smaller as the area of the image becomes smaller and the overall aspect ratio matches the aspect ratio of the display screen of the display device. Thus, an image in which the ratio of the reduction in the vertical direction in the lower portion to the reduction in the horizontal direction is 1: 1 may be generated as the display navigation image.

  According to such an in-vehicle device, it is possible to generate and display from the navigation image acquired from the portable device as a display navigation image representing the current position on the map that is reduced in scale as it is farther in the traveling direction than the current position. it can. Here, since such a display navigation image is an image representing the current position on a map in which the traveling direction is viewed from above the present location in a pseudo manner, the display is natural and most important. The area around the current location is a map with less distortion. Therefore, such distortion of the display navigation image with respect to the navigation image acquired from the portable device does not greatly deteriorate the visibility of the user. In addition, a map of a relatively large area on the traveling direction side can be displayed on the display device by effectively using the entire display screen of the display device.

  In addition, when the navigation image acquired by the navigation image acquisition unit includes an image portion of a display object for receiving a user operation, the navigation image acquisition is further added to the vehicle-mounted device as described above. An image portion of the display object is extracted from the navigation image acquired by the means, and the extracted image portion or an image obtained by enlarging the image portion is displayed on the display device so as to be superimposed on the display navigation image. It is preferable to provide display object display means for displaying.

  By doing in this way, the display object for receiving user operation can be displayed on a display apparatus without distortion, and the visibility and operability of a user's display object can be kept favorable.

  As described above, according to the present invention, as many regions as possible of a navigation image having an aspect ratio matching with a built-in display of a portable device generated in the portable device are displayed on an external display device with good visibility. can do.

It is a block diagram which shows the structure of the vehicle-mounted apparatus and smart phone which concern on embodiment of this invention. It is a figure which shows the process example of the navigation screen image display process which concerns on embodiment of this invention. It is a flowchart which shows the navigation screen image display process which concerns on embodiment of this invention. It is a figure which shows the process example of the navigation screen image display process which concerns on embodiment of this invention. It is a figure which shows the example of a display of the conventional navigation image.

Hereinafter, an embodiment of the present invention will be described by taking as an example a case where the portable device connected to the in-vehicle device is a smartphone.
In FIG. 1, the structure of the vehicle-mounted apparatus and smart phone which concern on this 1st Embodiment is shown.
The smartphone 2 is a mobile device carried by the user, and as shown in the figure, the operation unit 201, the display 202, the voice input / output unit 203 having a microphone, a speaker, and the like, the host interface 204, and the OS of the smartphone 2. SP-operating system 205, SP-AP 206, an application managed by SP-operating system 205 and running on SP-operating system 205, GPS receiver 207, gyro sensor 208, storage unit 209, and access to the mobile telephone network Mobile communication device 210 is provided.

  Here, as the SP-AP 206, the smartphone 2 includes a mobile phone application that provides a mobile phone function using the mobile communication device 210, the voice input / output unit 203, and the operation unit 201, a navigation application that provides a navigation function, and others. With the application.

  Next, the in-vehicle device 1 is a device mounted on an automobile, and as illustrated, an input device 101, a display device 102 having a horizontally long aspect ratio, a voice input / output device 103 including a microphone, a speaker, and the like, a device The interface 104, the H-operating system 105 that is the OS of the in-vehicle device 1, the H-AP 106 that is an application that is managed by the H-operating system 105 and runs on the H-operating system 105, and receives radio broadcasts and TV broadcasts. A broadcast receiver 107, a disk drive 108 for reproducing a recording disk such as a CD or a DVD, and a storage device 109 are provided.

  The in-vehicle device 1 includes a media player application, a control application, and other applications as the H-AP 106. Here, the media player application outputs the broadcast audio input / output device 103 and the display device 102 received by the broadcast receiver 107, and audio content and video content recorded on a recording disk mounted on the disk drive 108. Application for performing reproduction to the voice input / output device 103 and the display device 102. The control application is an application that provides a user interface for the navigation application of the smartphone 2 using the input device 101, the display device 102, and the voice input / output device 103 of the in-vehicle device 1.

Next, the host interface 204 of the smartphone 2 and the device interface 104 of the in-vehicle device 1 perform mutual communication by wireless connection via a wireless communication interface such as Bluetooth (registered trademark) or WIFI.
However, the smartphone 2 is configured by using a computer having a CPU, a memory, and the like in terms of hardware. The SP-operating system 205, the SP-AP 206, and the like have a predetermined computer program. This is realized by executing.

  Similarly, the in-vehicle device 1 is configured using a computer including a CPU, a memory, and the like in hardware. The H-operating system 105, the H-AP 106, and the like are This is realized by executing a predetermined computer program.

  In such a configuration, the navigation application of the smartphone 2 is configured to calculate the current position and the current traveling direction using the GPS receiver 207 and the gyro sensor 208, accept the destination setting from the user, and set Search for the route to the destination. In addition, the navigation application displays the current location mark that indicates the current position and current direction of travel, the route to the destination, the route to the destination, user operation acceptance, or information presentation on the map represented by the map data. The navigation screen image in which the button objects are arranged is generated so that the current traveling direction is the upward direction of the map. Here, the resolution and aspect ratio of the navigation screen image generated by the navigation application in this way match the resolution and aspect ratio of the display 202 in the current display 202 orientation (vertical orientation / horizontal orientation) of the smartphone 2. The navigation application displays the navigation screen image generated in this manner on the display 202 and performs processing according to the operation of the button object for accepting the user operation on the navigation screen image using the user operation unit 201 ( For example, change the map scale). Note that the current orientation of the display 202 of the smartphone 2 (vertical orientation / landscape orientation) may be detected using the gyro sensor 208, or other orientation sensors are provided in the smartphone 2 and detected by this. You may make it do.

  In addition, the navigation application of the smartphone 2 is arranged in the process of transmitting the generated navigation screen image to the control application of the in-vehicle device 1 and the generated navigation screen image while the smartphone 2 is connected to the in-vehicle device 1. A process of notifying the control application of the in-vehicle device 1 of the button object identification and the coordinate range of the button object on the navigation screen image is also performed.

Here, FIG. 2 a shows an example of a navigation screen image that is generated in this way by the navigation application of the smartphone 2 and displayed on the display 202 of the smartphone 2 and is transmitted to the control application while connected to the in-vehicle device 1. .
The illustrated example represents an example of a navigation screen image when the display 202 of the smartphone 2 is used in a portrait orientation, and the navigation screen image is a current position arranged on the map 21 in the lower center of the map. The current location mark 22 representing at least is represented. In this example, on the left side of the navigation screen image, as a button object for accepting a user operation, a button object for accepting a map scale change operation (buttons “+” and “-”) 23 is provided for information presentation. A button object (magnetic needle button) 24 representing the north direction is displayed as a button object.

Hereinafter, in such a configuration, the control application of the in-vehicle device 1 will be described processing that is performed when the smartphone 2 is connected to the in-vehicle device 1 and the navigation application is executed on the smartphone.
First, navigation screen image display processing performed by the control application will be described.
FIG. 3 shows the procedure of the navigation screen image display process.
As illustrated, in this process, the navigation screen image and the button object definition transmitted from the navigation application of the smartphone 2 are acquired as described above (steps 302 and 304).
Then, it is examined whether the aspect ratio of the acquired navigation screen image is a vertically long aspect ratio or a horizontally long aspect ratio (step 306).
If the aspect ratio is horizontally long, the navigation screen image is enlarged so that the vertical and horizontal sizes of the navigation screen image match the vertical and horizontal sizes of the display screen of the display device 102 of the in-vehicle device 1. The display navigation image is generated by reducing / reducing (step 318). Here, in step 318, the vertical direction and the horizontal direction are allowed to be enlarged / reduced at different magnifications. Thus, even if the vertical direction and the horizontal direction are enlarged / reduced at different magnifications, the aspect ratio when the display 202 of the smartphone 2 is in the landscape orientation and the aspect ratio of the landscape display device 102 of the in-vehicle device 1 are large. Since there is no difference, the navigation screen image is not greatly distorted and the visibility is not deteriorated. However, in step 318, the navigation screen image is enlarged / reduced at the same magnification in the vertical direction and the horizontal direction so that the display navigation image becomes the maximum size that can be accommodated in the display screen of the display device 102 of the in-vehicle device 1. A display navigation image may be used.

Then, the display button object definition is created and stored by changing the coordinate range of each button object of the button object definition acquired from the smartphone 2 to the coordinate range of the button object on the display navigation image (step 320).
And the display of the display apparatus 102 of the vehicle-mounted apparatus 1 is updated to the display of the generated display navigation image (step 316), and the process returns to step 302.
On the other hand, when the aspect ratio of the navigation screen image acquired from the smartphone 2 is a vertically long aspect ratio (step 306), an image in a predetermined area excluding the entire area of the navigation screen image or a part of the upper area is displayed. The display navigation image is generated by enlarging or reducing the scale so that the scale in the vertical direction becomes smaller as it goes upward and the overall size is the same as the screen of the display device 102 (step 308).

  That is, in step 308, for example, as shown in FIGS. 2a and 2b, the image of the display target area 250 that is an area excluding a partial area above the navigation screen image acquired from the smartphone 2 is displayed as the display target image of FIG. Extract as Here, the display target area 250 is determined in advance so that the aspect ratio is a vertically long aspect ratio rather than the aspect ratio of the display device 102 of the in-vehicle device 1. However, the display target area 250 may be the entire navigation screen image.

  Then, the display target image in FIG. 2b is reduced so that the vertical scale becomes smaller toward the top, so that the overall aspect ratio matches the aspect ratio of the display device 102 of the in-vehicle device 1. Convert. This conversion can be performed as follows, for example.

  That is, as shown in FIG. 2b, the area below the display target image is a similar display area 2501, and the area above the similar display area 2501 of the display target image is divided into four in the vertical direction. 2c as reduced display areas 2502-2505, and as shown in FIG. 2c, the image of the similar display area 2501 of the display target image is converted into the similar conversion target partial image 251, and the reduced display area 2502-2505 of the display target image. The partial image is referred to as a reduction target partial image 252-255.

  Then, a reduction rate is assigned to each reduction target partial image 252-255 so that the scale of the display target image that is higher is smaller, and each reduction target partial image is displayed as shown in FIG. 2c-d. 252-255 is reduced only in the vertical direction at the assigned reduction rate, and the reduced reduction partial image 252-255 and the similarity conversion target partial image 251 are combined to generate the image of FIG. 2d. Here, the reduction ratio assigned to each reduction target partial image 252-255 is determined in advance so that the aspect ratio of the combined image in FIG. 2D is an aspect ratio that matches the aspect ratio of the display device 102. The image in FIG. 2d is an image whose aspect ratio matches the aspect ratio of the display device 102 of the in-vehicle device 1.

  Next, the combined image in FIG. 2d is enlarged / reduced by similarity conversion to generate a display navigation image having the same size as the screen of the display device 102. Here, enlarging / reducing by similarity transformation means enlarging / reducing an image at the same enlargement / reduction rate in the vertical and horizontal directions.

  Now, as shown in FIG. 2d, the display navigation image generated in this way is a map whose scale decreases as it goes farther forward than the current location indicated by the current location mark 202, that is, in a pseudo manner from approximately above the current location. It represents a map with a bird's-eye view of the direction of travel of the car. Therefore, the display of such a display navigation image is natural, and the map around the most important current location represents a map with little distortion. Therefore, the distortion with respect to the navigation screen image acquired from the smartphone 2 of such a display navigation image does not greatly deteriorate the visibility of the user. Further, the navigation screen image is enlarged / reduced by similarity conversion so that the horizontal size of the navigation screen image acquired from the smartphone 2 matches the horizontal size of the display screen of the display device 102 of the in-vehicle device 1. Compared with the case where the image is displayed on the entire display screen of the display device 102 as shown in FIG. The display navigation image is displayed by effectively using the entire display screen of the display device 102.

  Now, returning to FIG. 3, if the display navigation image is generated in this way (step 308), among the coordinate ranges of the button objects indicated by the button object definition acquired from the smartphone 2 in the navigation screen image, the above-described coordinate range is described. An image portion in a coordinate range that is not within the similar shape display area 2501 is extracted as a button image (step 310). That is, in step 310, for example, from the navigation screen image as shown in FIG. 4a, it is not within the similar display area 2501, and therefore is not displayed in the display navigation image, or is collapsed in the vertical direction in the display navigation image. As the button objects to be determined, images of “+” and “−” button objects 361 which are button objects for accepting a map scale change operation, and button objects (magnetic needle buttons) 362 representing the north direction are extracted as button images. To do.

  Then, a display button image obtained by enlarging / reducing each extracted button image by similarity conversion so as to have a predetermined size after conversion is drawn at a position in a predetermined area of the display navigation image (step 312). Here, the size of the display button image is determined in advance as a size sufficient for the user's visual recognition and operation on the display of the display device 102 of the in-vehicle device 1.

  That is, in step 312, for example, as shown in FIG. 4a, images of “+” and “−” button objects 361 and button objects (magnetic needle buttons) 362 representing the orientation are extracted as display button images. Draw these images in a predetermined area on the display navigation image shown in FIG. 4B (in the figure, the area in the approximate center in the vertical direction near the left side) as shown in FIG. 4C. By drawing the display button image in this way, the button objects that are not displayed in the display navigation image or are displayed in the display navigation image in the vertical direction are also displayed on the display navigation image. It becomes possible to express well.

  Now, returning to FIG. 3, if the display button image is drawn at a predetermined position of the display navigation image (step 312), next, the similar shape in the coordinate range of each button object of the button object definition acquired from the smartphone 2. A display button object definition is created and saved by changing a coordinate range not in the display area 2501 to a coordinate range in which a display button image generated by enlarging / reducing the button object on the display navigation image is drawn ( Step 314).

And the display of the display apparatus 102 of the vehicle-mounted apparatus 1 is updated to the display of the generated display navigation image (step 316), and the process returns to step 302.
The navigation screen image display process performed by the control application of the in-vehicle device 1 has been described above.
Now, the control application of the in-vehicle device 1 displays the display navigation image on the display device 102 as described above, and also performs a process of accepting an operation of the user's button object from the user on the displayed display navigation image.
That is, when the coordinates on the display screen of the display device 102 designated by the user using the input device 101 are coordinates within the coordinate range indicated by the display button object definition, the control application includes the coordinate range. The navigation application of the smartphone 2 is notified of the identification of the button object indicated by the display button object definition of the corresponding button object.

  Then, when the button object represented by the notified identification is a button object for accepting a user operation, the navigation application that has received the notification determines that the user operation of the button object has occurred and responds to the button object. Processing (for example, changing the map scale).

The embodiment of the present invention has been described above.
In addition, the above embodiment can be similarly applied when an arbitrary portable device such as a PDA or a mobile phone is connected to the in-vehicle device 1 instead of the smartphone 2.

  DESCRIPTION OF SYMBOLS 1 ... Car-mounted apparatus, 2 ... Smartphone, 101 ... Input device, 102 ... Display apparatus, 103 ... Voice input / output device, 104 ... Device interface, 105 ... H-operating system, 106 ... H-AP, 107 ... Broadcast receiver, DESCRIPTION OF SYMBOLS 108 ... Disk drive, 109 ... Memory | storage device, 201 ... Operation part, 202 ... Display, 203 ... Voice input / output part, 204 ... Host interface, 205 ... SP-operating system, 206 ... SP-AP, 207 ... GPS receiver, 208: Gyro sensor, 209: Storage unit, 210: Mobile communication device.

Claims (4)

An in-vehicle device having a display device having a horizontally long display screen, to which a portable device can be connected,
Navigation image acquisition means for acquiring a vertically long navigation image representing a current position at a lower position on a map representing the current traveling direction as an upward direction from the connected portable device;
From the navigation image acquired by the navigation image acquisition means or an image excluding the upper portion of the navigation image, the upper portion has a smaller vertical scale and the overall vertical and horizontal sizes are the display device. Display navigation image generation means for generating, as a display navigation image, an image converted to match the vertical and horizontal sizes of the display screen of
A vehicle-mounted apparatus comprising: display navigation image display means for displaying the display navigation image generated by the display navigation image generation means on the display device. The in-vehicle device according to claim 1,
The display navigation image generation means has a smaller vertical scale in the upper part of the navigation image acquired by the navigation image acquisition means or an image in the lower area of the navigation image, and the whole The image is reduced in the vertical direction relative to the horizontal direction so that the aspect ratio matches the aspect ratio of the display screen of the display device, and the horizontal reduction of the vertical reduction in the lower part. An in-vehicle device that generates an image having a relative reduction ratio of 1: 1 as the display navigation image. The in-vehicle device according to claim 1 or 2,
The navigation image acquired by the navigation image acquisition means includes an image portion of a display object for receiving a user operation,
The in-vehicle device extracts the image portion of the display object from the navigation image acquired by the navigation image acquisition means, and displays the extracted image in a form superimposed on the display of the display navigation image on the display device. A vehicle-mounted device comprising display object display means for displaying a portion or an image obtained by enlarging the image portion. A computer program that is read and executed by a computer having a display device having a horizontally long display screen, to which a portable device can be connected,
In the computer,
From the connected portable device, obtaining a vertically long navigation image representing the current position at a lower position on the map representing the current traveling direction as an upward direction;
In the acquired navigation image or an image excluding the upper part of the navigation image, the upper part has a smaller scale in the vertical direction, and the overall vertical and horizontal size is the vertical and horizontal size of the display screen of the display device. Generating an image converted to match the size as a display navigation image;
And a step of displaying the generated display navigation image on the display device.