JP2012138111A - On-vehicle device and display control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an on-vehicle device and a display control method capable of providing an excellent operational feeling when being connected to a computer network.SOLUTION: An on-vehicle device 1 is provided with control means 15 which controls display means 13 in such a manner that: it displays an initial screen 61; if the screen is shifted to a different screen, it displays a predetermined first icon or first key which is a link to the initial screen; if a selection operation of the first icon or the first key is detected by input means 12, it displays the initial screen 61; if the different screen is one of a plurality of top screens 62 to 64 each of which is provided for each category of content and if the screen is shifted from the top screen to one of different screens 65 to 67 in the category, it displays the first icon or the first key along with a predetermined second icon or second key; and if a selection operation of the second icon or the second key is detected by the input means 12, it displays the top screen.

Description

  The present invention relates to an in-vehicle device and a display control method.

  As a conventional vehicle-mounted device, for example, there is a vehicle-mounted navigation device. 2. Description of the Related Art Conventionally, a roadside machine beside a road, and VICS (registered trademark) (Vehicle Information and Communication System) information and the like are transmitted from a roadside belt to an in-vehicle navigation device by unidirectional communication.

  Since such an in-vehicle device is mounted in a narrow place, limited devices such as a small display and a touch panel are often employed as user interfaces such as a display device and an operation unit. Various methods have also been proposed for operations and displays corresponding thereto (see, for example, Patent Document 1).

  In recent years, for example, it has been proposed to realize two-way communication between an in-vehicle device and a roadside device in a service area / parking area on an expressway, a “road station” on a general road, etc. Can be connected to a computer network such as the Internet via a roadside device.

  On the other hand, when connecting to a computer network such as the Internet and acquiring various types of information from a site on the computer network, there are various search methods (see, for example, Patent Document 2).

JP 2003-218719 A (specifications, etc.) JP 2004-30400 A (specifications etc.)

  However, for example, a technique such as Patent Document 2 is for a device having a relatively rich user interface, such as a personal computer, and is applied as it is to a vehicle-mounted device having a limited user interface as described above. It is difficult to improve the operational feeling when connecting to the computer network as described above.

  In particular, in the case of an in-vehicle navigation device, it is difficult to simplify the operation when connected to a computer network without impairing the operational feeling during navigation.

  For example, when a vehicle enters the area of the roadside machine and can be connected to a computer network, a first method for automatically connecting to a computer network and a confirmation display to the user A second method for determining whether to connect to the computer network according to the response is conceivable. However, in the first method, the intention of the user is not taken into consideration, and an unnecessary screen display is performed for the user who does not need information from the computer network. Also in the second method, it is necessary for the user to perform the operation once at any time when the user wants to execute the connection to the computer network or does not want to perform the connection to the computer network. As a result, the operational feeling of the apparatus deteriorates.

  Also, for example, when the display screen transitions after connection to the computer network (transition to another content by a link or the like), the user provides a “forward” key, “return” key, and “home” that are provided in advance. It is conceivable to change the display screen by operating a key. However, with the “forward” key and the “return” key, if the hierarchy in the category becomes deep, the number of operations increases when moving to another category, and the user feels bothersome. In addition, since the “Home” key returns to the initial screen, the number of operations increases when transitioning to another content in the same category when the hierarchy in the category is deepened, and the user feels bothersome.

  Further, for example, in the case of an apparatus that selectively selects one of a plurality of operation modes including content reproduction and computer network connection based on a user's operation, a file of content such as music and / or video is downloaded. In order to view the content, an operation for switching the operation mode is required.

  In addition, for example, a first method for continuously reproducing the next content (another content) and a second method for repeatedly reproducing the same content when the reproduction of the downloaded content is completed can be considered. . However, any method may cause an operation unintended by the user. For example, when it is desired to continuously download a plurality of contents such as a plurality of songs of the same album, an operation for changing to a download start screen (content selection screen) is required.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide an in-vehicle device and a display control method that can improve the operational feeling when connected to a computer network.

  In order to solve the above problems, the present invention is configured as follows.

  One of the in-vehicle devices includes a display unit having a display screen, an input unit that receives a user's operation, a wireless communication unit that can be connected to a computer network via a roadside device, and that the vehicle has entered the area of the roadside device. Is detected by the wireless communication means, a predetermined icon or key is newly displayed on the display means, and when the selection operation for the icon or key is detected by the input means, the wireless communication means is controlled and connected to the computer network. Control means.

  The in-vehicle device may be as follows in addition to the above-described in-vehicle device. That is, in this case, the control unit displays the icon or key at any position along the edge of the display screen of the display unit.

  In addition, the in-vehicle device may be as follows in addition to any of the above-described in-vehicle devices. That is, in that case, the display means continuously displays the content displayed when the wireless communication means detects that the vehicle has entered the area of the roadside device even after the icon or key is displayed. Then, the input means can accept an operation for the content that is continuously displayed.

  One of the display control methods includes a step of detecting that the vehicle has entered the area of the roadside machine, and a predetermined icon or key on the display means when it is detected that the vehicle has entered the area of the roadside machine. A step of newly displaying, a step of detecting a selection operation for the icon or key by a predetermined input means, and a step of connecting to a computer network via a predetermined wireless communication means when the selection operation is detected.

  One of the in-vehicle devices according to the present invention includes a display unit having a display screen, an input unit that receives a user's operation, a wireless communication unit that can be connected to a computer network via a roadside device, and a computer network using the wireless communication unit An initial screen is displayed on the display means at the start of connection, and when the display screen transitions from the initial screen to another screen, a predetermined first icon or first key that is a link to the initial screen on the other screen Is displayed, and when the selection operation for the first icon or the first key is detected by the input means, an initial screen is displayed on the display means, and another screen transitioned from the initial screen exists for each content category. If the display screen transitions from the top screen to another screen in the category, the first icon is displayed. Alternatively, when the first key and a predetermined second icon or second key that is a link to the top screen are displayed, and the selection operation for the second icon or the second key is detected by the input means. Control means for displaying a top screen on the display means.

  One of the display control methods according to the present invention includes a step of displaying an initial screen on a display means when a computer network connection is started, a step of transitioning the display screen from the initial screen to another screen, A step of displaying a predetermined first icon or first key which is a link to the initial screen on another screen when the initial screen is changed to another screen, and the first icon or first key; When the selection operation for is detected by a predetermined input means, the step of displaying an initial screen on the display means, and another screen that has transitioned from the initial screen is one of a plurality of top screens that exist by content category, When the display screen transitions from the top screen to another screen in the category, the first icon or the first key and the display to the top screen are changed. To display a predetermined second icon or the second key is a click, and a step of displaying the top screen on the display unit selection operation for the second icon or the second key is detected.

  One of the in-vehicle devices includes a display unit having a display screen, an input unit that receives a user operation, a wireless communication unit that can be connected to a computer network via a roadside device, and a playback unit that plays back a predetermined type of content. And a selection means for selectively selecting at least two operation modes including content reproduction by the reproduction means and computer network connection by the wireless communication means based on an operation on the input means, and a computer network connection by the selection means If the selected mode is selected and a certain type of content is downloaded, the operation mode selected by the selection unit is forcibly switched to content playback, and the playback unit starts playback of the downloaded content and displays it. Switch the display screen of the means together with the switching of the operation mode And a that control means.

  The in-vehicle device may be as follows in addition to the above-described in-vehicle device. That is, in this case, the control unit displays a download start screen for allowing the user to select content to be downloaded on the display unit, downloads the content selected by the user via the wireless communication unit, and downloads the downloaded content. When the reproduction is finished, the display screen of the display means is changed to the download start screen.

  One of the display control methods includes a step of selectively selecting one of at least two operation modes including content reproduction and computer network connection based on an operation on a predetermined input means, When a mode is selected and a predetermined type of content is downloaded, the selected operation mode is forcibly switched to content playback, playback of the downloaded content is started, and the display screen of the display means is changed to the operation mode. And switching step.

  ADVANTAGE OF THE INVENTION According to this invention, the operational feeling at the time of computer network connection can be made favorable in a vehicle-mounted apparatus.

It is a figure which shows an example of a radio | wireless communications system. It is a block diagram which shows the structure of the vehicle-mounted apparatus which concerns on Embodiment 1 of this invention. 4 is a flowchart for explaining the operation of the in-vehicle device according to the first embodiment. 10 is a flowchart for explaining the operation of the in-vehicle device according to the second embodiment. 10 is a diagram for explaining transition of a display screen in Embodiment 2. FIG. 10 is a flowchart for explaining the operation of the in-vehicle device according to the third embodiment.

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

Embodiment 1 FIG.
FIG. 1 is a diagram illustrating an example of a wireless communication system. This wireless communication system is a so-called DSRC (Dedicated
Short Range Communication) system. In this system, the vehicle-mounted device 1 is installed in a vehicle 100 that is a moving body, and bidirectional wireless communication is performed with a roadside device 2 installed near the road. A server device 3 is connected to the roadside device 2, and various information is transmitted to and received from the in-vehicle device 1 via the roadside device 2.

  The in-vehicle device 1 according to Embodiment 1 of the present invention newly displays a predetermined icon or key when the vehicle 100 enters the area of the roadside device 2, and until a selection operation for the icon or key is detected, When the selection operation is detected without connecting to the Internet, the Internet is connected to the content indicated by a predetermined URL (Universal Resource Locator).

  FIG. 2 is a block diagram showing a configuration of the in-vehicle device according to Embodiment 1 of the present invention. In the in-vehicle device 1 shown in FIG. 2, the DSRC communication control unit 11 is a circuit that performs wireless communication with the roadside device 2. The operation unit 12 is a device that detects an operation by a user, such as a switch, a remote controller, or a voice recognition device. The operation unit 12 has a transparent touch panel installed on the display screen of the display unit 13. The display unit 13 is a device that displays various types of information, such as a liquid crystal display. The operation unit 12 and the display unit 13 constitute a user interface. The control unit 15 displays an operable image such as an icon on the display unit 13 and detects an operation on the display position with the touch panel of the operation unit 12. The storage unit 14 is a device that stores data. As the storage unit 14, a semiconductor memory such as a RAM or a ROM, a hard disk drive, an optical disk, and a driving device thereof are used. The control unit 15 is a circuit that controls each unit in the in-vehicle device 1. The control unit 15 includes, for example, a microprocessor and a recording medium that stores a program executed by the microprocessor. The form of the in-vehicle device 1 is, for example, a navigation device in which the above components are integrated.

  In the roadside device 2, the communication control unit 21 is a device that performs bidirectional wireless communication with the in-vehicle device 1 in the area. The communication control unit 21 relays communication using the IP (Internet Protocol) between the in-vehicle device 1 and the server device 3 and transmits VICS (registered trademark) (Vehicle Information and Communication System) information. In FIG. 1, only one roadside machine 2 is depicted, but a plurality of roadside machines 2 are arranged along the road or in a facility with a parking lot.

  In the server device 3, the data communication unit 31 is a device that performs communication with the communication control unit 21 of the roadside device 2 and relays communication between the in-vehicle device 1 and the IP network. The information management unit 32 is a device that stores various types of information provided to the in-vehicle device 1.

  Next, the operation of the on-vehicle device will be described. FIG. 3 is a flowchart for explaining the operation of the in-vehicle device 1 according to the first embodiment.

  The control unit 15 of the in-vehicle device 1 monitors whether the vehicle 100 (and thus the in-vehicle device 1) has entered the area of any roadside device 2 (step S1). At that time, the control unit 15 monitors whether the DSRC communication control unit 11 has received a predetermined control signal from the roadside device 2, and determines that it has entered the area if the control signal is received. To do.

  When the vehicle 100 enters the area of the roadside unit 2, the control unit 15 receives the initial URL acquired from the roadside unit 2 by the DSRC communication control unit 11 in the initial communication with the roadside unit 2 (that is, when communication is established). (Step S2), the DSRC communication control unit 11 is controlled to access the initial URL (Step S3). The roadside device 2 periodically pushes and distributes the information of the initial URL.

  When the control unit 15 obtains data (such as HTML (HyperText Markup Language) data) from the initial URL (step S4), the control unit 15 temporarily stores the data in the storage unit 14. At this time, the control unit 15 does not perform the display based on the data on the display unit 13, and continuously displays the content displayed before entering the area on the display unit 13. The content in this case is a map, video by DVD playback, information about the audio content being played (album information, song title, volume, etc.), and the like.

  Next, when the acquisition of data from the initial URL is completed, the control unit 15 causes the display unit 13 to continuously display the content displayed before entering the area and display a screen switching icon (step S5). This screen switching icon is a pop-up icon that is displayed small around the edge of the display screen of the display unit 13 so as not to hinder viewing of the content. Even at this time, the control unit 15 does not cause the display unit 13 to display based on the data acquired from the initial URL.

  Then, while the screen switching icon is displayed, the control unit 15 determines whether or not the vehicle 100 is out of the area of the roadside device 2 (step S6) and whether or not the screen switching icon is pressed (step S7). To monitor.

  When the vehicle 100 moves out of the area of the roadside unit 2 while the screen switching icon is displayed, the control unit 15 detects this by the DSRC communication control unit 11 and displays the screen switching icon accordingly. 13 is deleted (step S13). Then, it returns to step S1 and the control part 15 monitors whether the vehicle 100 entered into the area of one of the roadside machines 2. FIG.

  On the other hand, when the screen switching icon is pressed, the control unit 15 detects the operation with the touch panel of the operation unit 12 and displays the browser screen on the display unit 13 based on the data acquired from the initial URL accordingly. (Step S8). Further, the control unit 15 displays a screen switching icon for returning to the original screen (that is, the screen before shifting to the browser screen) on the browser screen (step S8). The browser screen is a screen when the control unit 15 executes a browser program that downloads and displays the content of the URL specified by HTTP (HyperText Transport Protocol).

  Thereafter, while the browser screen is displayed, the control unit 15 monitors whether or not the screen switching icon is pressed (step S9) and whether or not the vehicle 100 is out of the area of the roadside device 2 (step S10). To do.

  When the screen switching icon is pressed, the control unit 15 detects the operation using the touch panel of the operation unit 12, and accordingly returns the screen of the display unit 13 to the screen before the transition to the browser screen of the initial URL. (Step S11). Thereafter, the process returns to step S5, and a screen switching icon for switching to the browser screen is displayed together with the original screen.

  Further, when the vehicle 100 moves out of the area of the roadside device 2 while the browser screen is displayed, the control unit 15 detects this by the DSRC communication control unit 11, and accordingly, the screen of the display unit 13 is detected. Is returned to the screen before the transition to the browser screen of the initial URL (step S12), and the screen switching icon is deleted from the screen of the display unit 13 (step S13). Then, it returns to step S1 and the control part 15 monitors whether the vehicle 100 entered into the area of one of the roadside machines 2. FIG.

  As described above, according to the first embodiment, the DSRC communication control unit 11 as the wireless communication unit can be connected to the computer network via the roadside device 2, and the control unit 15 as the control unit is connected to the vehicle. When the DSRC communication control unit 11 detects that 100 has entered the area of the roadside machine 2, a predetermined icon or key is newly displayed on the display unit 13 serving as a display unit, and the operation unit 12 serving as an input unit is used. When a selection operation for the icon or key is detected, the DSRC communication control unit 11 is controlled to connect to the computer network.

  As a result, the screen for connecting to the computer network and the browser screen are not immediately displayed when entering the area of the roadside device 2, and the content video is continuously viewed, and the user can use the computer when necessary. A network connection screen and a browser screen can be displayed. That is, since the user does not perform an operation if it is unnecessary, those screens are not automatically displayed. Therefore, it is possible to improve the operational feeling when connecting to a computer network.

Embodiment 2. FIG.
The in-vehicle device according to Embodiment 2 of the present invention appropriately displays a home key for returning to the initial screen and / or a category top key for returning to the top screen of the content category after starting the computer network connection. When the key is operated, the display screen is returned to the initial screen or the top screen of the category.

  Since the configuration of the in-vehicle device according to Embodiment 2 is the same as that of Embodiment 1, the description thereof is omitted. However, the operation of the control unit 15 is as described below.

  Next, the operation of the on-vehicle device will be described. FIG. 4 is a flowchart for explaining the operation of the in-vehicle device according to the second embodiment. FIG. 5 is a diagram for explaining the transition of the display screen in the second embodiment.

  The control unit 15 of the in-vehicle device 1 monitors whether the vehicle 100 (and thus the in-vehicle device 1) has entered the area of any roadside device 2 (step S21). When the vehicle 100 enters the area of the roadside unit 2, the control unit 15 receives the initial URL acquired from the roadside unit 2 by the DSRC communication control unit 11 in the initial communication with the roadside unit 2 (that is, when communication is established). (Step S22), the DSRC communication control unit 11 is controlled to access the initial URL (Step S23). The roadside device 2 periodically pushes and distributes the information of the initial URL.

  When the control unit 15 acquires data (HTML data or the like) from the initial URL (step S24), the control unit 15 displays an initial screen on the display unit 13 based on the data. On the initial screen, for example, as shown in the initial screen 61 of FIG. 5, link keys 71-1, 71-2, 71-3 are displayed. The link keys 71-1, 71-2, and 71-3 are operation units that can be operated based on a touch panel of the operation unit 12 and a user interface by the display unit 13. Each link key 71-i (i = 1, 2, 3) is associated with a URL to another screen (HTML data).

  Further, the control unit 15 stores the initial URL in the storage unit 14 as the 0th element of the URL holding array (step S25). The top of the URL holding array is the 0th element, and when there are M elements, the last of the URL holding array is the (M-1) th element.

  The control unit 15 sets the values of the variable data N and Max to zero (step S26). The variable data N indicates the element number of the URL to be displayed in the URL holding array. The variable data Max indicates the element number of the last URL in the URL holding array.

  Then, the control unit 15 determines whether or not the vehicle 100 is out of the area of the roadside machine 2 (step S27), and whether or not the key displayed on the screen is pressed (steps S28, S42, S48, S51, S56). ).

  In the initial screen 61 shown in FIG. 5, only the link keys 71-1, 71-2, 71-3 are displayed, and the forward key, the return key, the top key, and the home key are not displayed. The forward key, the return key, the top key, and the home key will be described later.

  Therefore, after the initial screen 61 is displayed, the control unit 15 determines whether or not the vehicle 100 is out of the area of the roadside machine 2 (step S27) and whether or not any link key 71-i is pressed. (Step S28) is monitored.

  The link keys 71-1, 71-2, 71-3 displayed on the initial screen 61 are associated with URLs to content-specific top screens (HTML data of the top screen). The HTML data on the top screen is also a kind of content.

  Thereafter, when the control unit 15 detects that any one of the link keys 71-i has been pressed, the control unit 15 specifies the URL associated with the link key 71-i and controls the DSRC communication control unit 11. The URL is accessed (step S29). Further, the control unit 15 increases the value of the data N by 1 (step S30), and substitutes the value of the data N into the data Max (step S31).

  And the control part 15 will change the screen of the display part 13 based on the data, if data (HTML data etc.) are acquired from URL linked | related with the link key 71-i (step S32). When the link key 71-i is pressed on the initial screen 61, the screen of the display unit 13 transitions to the top screen of any category.

  In the state of the screen after the transition (here, the top screen), the control unit 15 determines whether or not the value of the data N is zero (step S33). Since the value of the data N is 1 when the screen of the display unit 13 is the top screen, the control unit 15 next determines whether or not the value of the data N is 1 (step S34).

  In the case of the top screen, since the value of the data N is 1, the control unit 15 displays the home key 81 on the display unit 13 on the top screens 62, 63, and 64 as shown in FIG. 5 (step S35). ). The home key 81 is a special link key associated with the URL of the initial screen data.

  In the case shown in FIG. 5, when the link key 71-1 is pressed on the initial screen 61, the category A top screen 62 is displayed, and when the link key 71-2 is pressed, the category B top screen 63 is displayed. When the link key 71-3 is pressed, the category C top screen 64 is displayed. Then, the link keys 71-4 and 71-5 are displayed on the top screen 62 of category A, the link keys 71-6 and 71-7 are displayed on the top screen 63 of category B, and the top of category C is displayed. On the screen 64, link keys 71-8 and 71-9 are displayed.

  Next, the control unit 15 determines whether or not the value of the data N and the value of the data Max are both zero (step S36). When the top screens 62, 63, 64 are displayed, the value of the data N is not zero, so the control unit 15 next determines whether or not the value of the data N is greater than zero (step S1). S37). When the top screens 62, 63, 64 are displayed, the value of the data N is 1 and is greater than zero, so the control unit 15 uses the return key on the top screens 62, 63, 64 here. It is displayed (step S38). Further, the control unit 15 determines whether or not the value of the data N is smaller than the value of the data Max (step S39). When transitioning from the initial screen 61 to the top screens 62, 63, 64 as described above, the value of the data N is 1 and the value of the data Max is 1, so the control unit 15 causes the top screens 62, 63 to 64, the forward key is not displayed.

  In this way, when the initial screen 61 is changed to the top screens 62, 63, 64, the home key 81 and the return key are displayed on the top screens 62, 63, 64.

  When the screen transition is completed as described above, the control unit 15 stores the URL accessed this time (that is, the URL of the currently displayed content) as the Nth element of the URL holding array (step S41). The numerical value N is the value of the data N. Here, since the top screens 62, 63, and 64 are displayed, the value of N is 1.

  After displaying the top screens 62, 63, 64, the process returns to step S27, and the control unit 15 determines whether or not the vehicle 100 is out of the area of the roadside machine 2 (step S27), and any link key 71-i is pressed. It is monitored whether the home key 81 has been pressed (step S42) and the return key has been pressed (step S51).

  When the home key 81 is pressed on the top screens 62, 63, 64, the control unit 15 reads the 0th element of the URL holding array and accesses the data of the read URL content (that is, the initial screen). (Step S43), the value of the data N is set to zero (step S44), and the value of the data N is substituted into the data Max (step S31).

  And the control part 15 will change the screen (here initial screen) of the display part 13, based on the data, if data are acquired from the URL (step S32). And since the value of the data N is zero (step S33), the control part 15 erase | eliminates the display of a top key (step S45).

  Next, since both the value of data N and the value of data Max are zero (step S36), the control unit 15 deletes the display of the return key (step S46) and holds the URL of the initial screen accessed this time as a URL. Stored as the 0th element of the array (step S41).

  In this way, when the top screen 62, 63, 64 transitions to the initial screen 61, the display of the home key 81 and the return key is erased on the initial screen 61.

  On the other hand, when any one of the link keys 71-i (i = 4, 5, 6, 7, 8, 9) is pressed on the top screen 62, 63, 64, the control unit 15 associates with the link key. The content data of the URL being accessed is accessed (step S29), the value of data N is incremented by 1 (step S30), and the value of data N is substituted into data Max (step S31). If the link key 71-i is pressed on the top screens 62, 63, 64 when the initial screen 61 transitions to the top screens 62, 63, 64, the values of the data N and the data Max are 2, respectively. When the data acquisition of the content is completed (step S32), the control unit 15 displays the content screen, displays the top key 82 (step S47), and continues to display the return key (step S37). Note that the forward key is not continuously displayed. The top key 82 is a special link key associated with the URL of the data of the top screens 62, 63, 64 of the category to which the content belongs.

  In the case shown in FIG. 5, when the link key 71-4 is pressed on the category A top screen 62, the screen 65 is displayed, and the home key 81, the top key 82, and the link key 71-10 are also displayed. . When the link key 71-5 is pressed on the category A top screen 62, the screen 66 is displayed, and the home key 81, the top key 82, and the link key 71-11 are also displayed. When the link key 71-8 is pressed on the category C top screen 64, the screen 67 is displayed, and the home key 81, the top key 82, and the link key 71-12 are also displayed.

  In this way, when the top screen 62, 63, 64 of a certain category is changed to the screen 65, 66, 67 of the content in the category, the home key 81, the top key 82, and the return key are displayed on the screen. .

  Thereafter, after the transition from the top screen 62, 63, 64 of a certain category to the screen 65, 66, 67 of the content in that category, when the home key 81 on that screen is pressed (step S42), the control unit 15 The initial screen is displayed, the values of the data N and the data Max are set to zero (steps S44 and S31), and the display of the home key 81, the top key 82 and the return key is deleted (steps S45 and S46).

  Further, after the transition from the top screen 62, 63, 64 of a certain category to the screen 65, 66, 67 of the content in that category, when the top key 82 on that screen is pressed (step S48), the control unit 15 The top screen 62, 63, 64 of the category is displayed with reference to the URL which is the first element of the URL holding array, the values of the data N and the data Max are set to 1 (steps S50, S31), and the top key The display of 82 is deleted (step S35).

  Further, when the return key is pressed on a certain screen (step S51), the control unit 15 reads the (N-1) th element of the URL holding array based on the value of the data N at that time (step S51). S52) The content of the URL is displayed, the value of data N is decreased by 1 (step S53), and the forward key is displayed (step S54). When the return key is pressed on the top screen, the display of the return key is deleted on the screen after the transition (that is, the initial screen) regardless of the value of the data Max (steps S46 and S55).

  Thereafter, when the forward key is pressed on a certain screen (step S56), the control unit 15 reads the (N + 1) th element of the URL holding array based on the value of the data N at that time (step S57). The contents of the URL are displayed and the value of the data N is increased by 1 (step S58). Here, when the value of the data N is increased by 1, and the value of the data N and the value of the data Max become the same, the display of the key to be advanced is deleted on the screen after the transition (step S40).

  As described above, as long as the vehicle 100 does not depart from the area of the roadside unit 2, a pressing operation on keys (home key 81, top key 82, link key 71-i, etc.) displayed in each screen state is performed. If any key is pressed, the screen of the display unit 13 transitions.

  When the vehicle 100 is out of the area of the roadside device 2, the control unit 15 redisplays the screen before the transition to the initial screen 61 on the display unit 13 and erases all elements of the URL holding array (step S59). ). Then, it returns to step S21 and waits until the vehicle 100 enters the area of the roadside machine 2.

  As described above, according to the second embodiment, the control unit 15 displays the initial screen 61 on the display unit 13 when the DSRC communication control unit 11 starts the computer network connection, and the display screen is separated from the initial screen 61. When the screen is changed to the top screen 62 (63, 64), the home key 81 that is a link to the initial screen 61 is displayed on the other screen 62, 63, 64, and the selection operation for the home key 81 is operated. When detected by the unit 12, the initial screen 61 is displayed on the display unit 13. Further, when the other screen transitioned from the initial screen 61 is one of the top screens 62, 63, 64, the control unit 15 displays the display screen from the top screen 62, 63, 64 to another screen 65 in the category. , 66, 67, the home key 81 and the top key 82 are displayed. When a selection operation on the top key 82 is detected by the operation unit 12, the top screen 62, 63, 64 of the category is displayed on the display unit 13. Display.

  Thus, even when there are many content category layers when connected to the computer network, it is possible to easily return to the initial screen 61 and the top screens 62, 63, and 64 of the content category currently being displayed. Therefore, it is possible to improve the operational feeling when connecting to a computer network.

Embodiment 3 FIG.
The in-vehicle device according to Embodiment 3 of the present invention forcibly switches the operation mode to content playback when the operation mode of the computer network connection is selected by the user and a predetermined type of content is downloaded, Start playing the downloaded content.

  Since the configuration of the in-vehicle device according to Embodiment 3 is the same as that of Embodiment 1, the description thereof is omitted. However, the operation of the control unit 15 is as described below.

  Next, the operation of the on-vehicle device will be described. FIG. 6 is a flowchart for explaining the operation of the in-vehicle device according to the third embodiment.

  The control unit 15 of the in-vehicle device 1 monitors whether the vehicle 100 (and thus the in-vehicle device 1) has entered the area of any roadside device 2 (step S61). When the vehicle 100 enters the area of the roadside unit 2, the control unit 15 receives the initial URL acquired from the roadside unit 2 by the DSRC communication control unit 11 in the initial communication with the roadside unit 2 (that is, when communication is established). (Step S62), the DSRC communication control unit 11 is controlled to access the initial URL (Step S63). The roadside device 2 periodically pushes and distributes the information of the initial URL.

  When the control unit 15 acquires data (HTML data or the like) from the initial URL (step S64), the control unit 15 displays an initial screen on the display unit 13 based on the data. In the third embodiment, the initial screen is a file selection screen, and a list of downloadable contents (files) is displayed (step S65). This list is the above-described list of link keys, and each link key is associated with a URL of a file.

  Thereafter, when any link key is pressed, the control unit 15 detects the link key via the operation unit 12, accesses the URL of the content (file) associated with the link key, and accesses the content (file). ) Starts downloading (step S66).

  Then, the control unit 15 monitors whether or not the vehicle 100 is out of the area of the roadside machine 2 (step S67) and whether or not the download of the content (file) is completed (step S68).

  When the download is completed, the control unit 15 forcibly changes the operation mode of the apparatus from the network connection mode to the content playback mode, starts playback of the content (file), and causes the display unit 13 to display the content ( Step S69). Thereby, the screen of the display unit 13 transitions from the screen at the time of network connection to the content display screen.

  For example, when the content is a music data file, the operation mode of the apparatus is changed to the music playback mode. In the music playback mode, music is played from a music data file (not shown) and output from a speaker (not shown), and information (music title, etc.) related to the music is displayed on the display unit 13. When the content is a video data file, the operation mode of the device is changed to the video playback mode. In the video playback mode, video and audio are played from a video data file (not shown), the video is displayed on the display unit 13, and the audio is output from a speaker (not shown).

  Thereafter, the control unit 15 monitors whether or not the reproduction of the content is completed during the content reproduction (step S70), and whether or not a reproduction interruption or reproduction stop event occurs during the content reproduction (step S71). To do.

  When the reproduction of the content is completed, the control unit 15 forcibly changes the operation mode of the apparatus from the content reproduction mode to the network connection mode, and displays the file selection screen again (step S65).

  If a playback interruption or playback stop event occurs during content playback, the control unit 15 stops or stops playback of the content, and transitions the display screen according to the type of the event (step S72). Examples of such events include a user operation on a source switching operation unit (not shown) such as music data and radio, an operation on a vehicle accessory (ACC) switch, and the like. When the source is switched, a display screen (for example, an FM radio channel selection screen) corresponding to the switched source is displayed. When the ACC switch is turned off, the screen display is simply turned off.

  On the other hand, when the vehicle 100 is out of the area of the roadside unit 2 during downloading, the control unit 15 deletes the file being downloaded (step S73) and displays it on the screen before the transition to the initial URL screen. The screen of the unit 13 is changed (step S74). Then, it returns to step S61 and the control part 15 monitors whether the vehicle 100 entered into the area of one of the roadside machines 2. FIG.

  As described above, according to the third embodiment, the control unit 15 functions as a reproduction unit that reproduces a predetermined type of content, and also performs content reproduction and DSRC communication control based on an operation on the operation unit 12. It functions as a selection means for alternatively selecting any one of at least two operation modes including computer network connection by the unit 11. Further, when the computer network connection mode is selected and a predetermined type of content is downloaded, the control unit 15 forcibly switches the selected operation mode to content playback, and Playback is started and the display screen of the display unit 13 is switched together with the switching of the operation mode.

  As a result, it is not necessary to perform operations such as source switching for content reproduction, and the operational feeling when connecting to a computer network can be improved.

  Each embodiment described above is a preferred example of the present invention, but the present invention is not limited to these, and various modifications and changes can be made without departing from the scope of the present invention. It is.

  For example, in the first embodiment, the control unit 15 may output a predetermined sound such as a chime from a speaker (not shown) together with an icon when entering the area of the roadside unit 2.

  In the second embodiment, the home key 81, the top key 82, the return key, and the forward key are displayed when they can be operated and are hidden when they cannot be operated. In addition, when the operation is possible, the active display may be performed, and when the operation is impossible, the inactive display may be performed. In that case, these keys are displayed in a relatively dark color or color in the active display, and in a relatively light color or black and white in the inactive display.

  In the second embodiment, when the home key 81 is pressed and the screen transitions to the initial screen 61, the display of the top key 82 is deleted. Instead, the display of the top key 82 is displayed on the initial screen. 61 may be continued. In that case, when the top key 82 is pressed on the initial screen 61, the screen of the display unit 13 transitions to the top screens 62, 63, 64 of the content category before the initial screen 61 returns.

  In the third embodiment, the content is automatically and immediately played after the download is completed. Instead, a response screen for the user to confirm is displayed, and a predetermined confirmation by the user is performed. The content may be reproduced only when there is an operation.

  The various keys in the above embodiments may be icons that can be moved within the screen by a user operation.

  Further, the above embodiments can be combined with each other.

  The present invention is applicable to, for example, an in-vehicle navigation device.

  DESCRIPTION OF SYMBOLS 1 In-vehicle apparatus, 2 Roadside machine, 11 DSRC communication control part (wireless communication means), 12 Operation part (input means), 13 Display part (display means), 15 Control part (control means, reproduction | regeneration means, selection means), 81 Home key (first icon, first key), 82 Top key (second icon, second key), 100 vehicle

Claims (2)

In an in-vehicle device installed in a vehicle,
Display means having a display screen;
Input means for receiving user operations;
Wireless communication means connectable to a computer network via a roadside device;
An initial screen is displayed on the display means at the start of computer network connection by the wireless communication means, and when the display screen transitions from the initial screen to another screen, a predetermined screen is a link to the initial screen The first icon or the first key is displayed, and when the selection operation for the first icon or the first key is detected by the input means, the display means displays the initial screen, and When another screen that has transitioned from the initial screen is one of a plurality of top screens that exist by content category, the first icon is displayed when the display screen transitions from the top screen to another screen in the category. Alternatively, a first key and a predetermined second icon or second key that is a link to the top screen are displayed, and the second key is displayed. Control means for selecting operation for the icon or the second key to display the top screen on the display unit to be detected by the input unit,
A vehicle-mounted device comprising: In a method for controlling a display screen of a display means of an in-vehicle device installed in a vehicle,
Displaying an initial screen on the display means at the start of a computer network connection;
Transitioning the display screen from its initial screen to another screen;
Displaying a predetermined first icon or first key that is a link to the initial screen on the other screen when the display screen transitions from the initial screen to another screen;
Displaying the initial screen on the display means when a selection operation for the first icon or the first key is detected by a predetermined input means;
When another screen that has transitioned from the initial screen is one of a plurality of top screens that exist by content category, when the display screen transitions from the top screen to another screen in the category, the first screen When an icon or a first key and a predetermined second icon or second key that is a link to the top screen are displayed and a selection operation for the second icon or the second key is detected, Displaying the top screen on a display means;
A display control method comprising:

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