JP2017193232A - Vehicular display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular display device capable of recognizing that there is a possibility that displayed information is different from latest information when an abnormality occurs in communication with external equipment.SOLUTION: A vehicular display device includes: connection means which can be connected with external equipment and can be input with external equipment information transmitted from the external equipment; display means which displays external equipment display information P2 on the basis of the external equipment information and various information P3 including the vehicle information; and control means which operates the connection means and the display means. The control means causes the display means to display an external equipment connection symbol P1 indicating the connection with the external equipment and to display symbols C1 and C2 indicating a communication error so as to be overlapped on display indicating the external equipment display information P2 or/and the external equipment connection symbol P1 when the external equipment information cannot be obtained within a prescribed time T.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a vehicle display device that displays vehicle information.

  Conventionally, a vehicle display device includes an image display device including a liquid crystal panel and the like, and a microcomputer and a drawing processing means (image storage means such as a drawing LSI and an image memory) for displaying traveling information on the image display device. For example, as disclosed in Patent Document 1, a display device for displaying a meter image such as a speedometer has been proposed.

  In addition to the meter image described above, an apparatus that displays information from an external device other than an in-vehicle device such as a mobile phone has been proposed, and is disclosed in Patent Document 2, for example.

JP 2004-157434 A JP 2003-244343 A

  However, if an abnormality occurs in the communication between the vehicle display device and the external device after establishing communication with the external device, the information on the external device displayed on the vehicle display device is not updated. There is a possibility that the information displayed on the display device for use is not changed and may not be recognized as being different from the latest information.

  The present invention has been made in view of the above problems, and is a vehicle display capable of recognizing that displayed information may be different from the latest information when an abnormality occurs in communication with an external device. An object is to provide an apparatus.

  The vehicle display device 100 according to the present invention is based on the external device information D2 and the connection means 120 that can be connected to the portable external device 200 and can input the external device information D2 sent from the external device 200. The display means 130 which displays external apparatus display information P2 and various information P3 including vehicle information, and the control means 110 which operates the connection means 120 and the display means 130 are provided, and the control means 110 is a display means. 130, an external device connection symbol P1 indicating that the external device 200 has been connected is displayed, and if the external device information D2 is not obtained within a predetermined time T, a display indicating the external device display information P2, or / And the symbols C1 and C2 indicating communication errors are displayed over the external device connection symbol P1.

  The control means 110 displays a character string C3 together with symbols C1 and C2 indicating communication errors.

  The predetermined time T is determined for each item of the external device information D2.

  ADVANTAGE OF THE INVENTION According to this invention, when abnormality generate | occur | produces in communication with an external apparatus, the display apparatus for vehicles which can recognize that the displayed information differs from the newest information can be provided.

1 is an overall view of a display device for a vehicle and an external device showing an embodiment of the present invention. The main block diagram of the display apparatus for vehicles and external equipment of the embodiment. The figure which shows the example of a display of the various information of the display apparatus for vehicles of the embodiment. The figure which shows the external apparatus display information display example 1 of the display apparatus for vehicles of the embodiment. The figure which shows the external apparatus display information display example 2 of the display apparatus for vehicles of the embodiment. The figure which shows the example of a display when timeout occurs in FIG. The figure which shows the example of a display when timeout occurs in FIG. FIG. 4 is a process flow diagram for determining a display image based on an item of external device information according to the embodiment.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments in which the present invention is applied as an on-vehicle instrument for an automobile will be described below with reference to the accompanying drawings.

  The vehicle-mounted instrument (vehicle display device) 100 includes a control unit 110, a connection unit 120, and a display unit 130. These components are electrically connected via a circuit board, wiring, etc., held in a case made of synthetic resin, and provided on the instrument panel in front of the vehicle so that the vehicle user can easily check while driving. It is done.

  The control means 110 includes a storage unit such as a ROM 111 and a RAM 112 used for storing a predetermined program such as a vehicle speed calculation process and various data, a storage area at the time of calculation, etc., a CPU 113 for performing an arithmetic process according to the predetermined program, and an input / output ( An I / O) interface 114 and a drawing circuit 115 including a graphic controller and a graphic memory for drawing an image to be displayed on the display means 130 are provided, and a microcomputer in which each component is connected by an internal bus is provided. Applicable, vehicle information based on various sensors of the vehicle is input via a dedicated cable, and a control signal for controlling the display means 130 is generated and output in accordance with these signals. The ROM 111 stores various display data related to drawing programs and images and fonts to be output to the display means 130.

  The control unit 110 is connected to another unit such as the ECU 300 mounted on the vehicle separately from the vehicle-mounted instrument 100 via a cable capable of serial communication, and information from the unit is input via the first communication interface 116. it can. In this case, the ECU 300 inputs vehicle state information (vehicle information) D1 from various sensors such as a gear position detection unit, a direction indicator, a headlight device, a door opening / closing sensor, a vehicle speed sensor, etc. It is comprised so that transmission to the control means 110 of the vehicle-mounted instrument 100 is possible.

  The vehicle-mounted instrument 100 includes connection means 120. An external device 200 such as a smartphone independent of the vehicle includes a control unit 210, a connection unit 220, and a display unit 230. The vehicle-mounted instrument 100 and the external device 200 are connected to each other after the communication connection operation is performed by the connection means 120 and 220 having a short-range radio wave transmission / reception function.

  The connection unit 120 includes a second communication interface 121 so that content information (external device information) D2 received from the external device 200 by, for example, Wi-Fi, Bluetooth (registered trademark), or the like can be transmitted to the control unit 110. It is configured. Examples of the content information D2 include route guidance information and music information.

  The vehicle-mounted instrument 100 includes display means 130. As the display unit 130, a liquid crystal display panel (LCD) 131 in which a plurality of pixels are formed in a matrix and a backlight (LED) 132 that transmits and illuminates the liquid crystal display panel 131 can be applied. In this case, the liquid crystal display panel 131 is an active matrix type driven by using a thin film transistor (TFT), and transmission / non-transmission is performed for each pixel based on drawing data generated by the drawing circuit 115 of the control unit 110. The display image (image) is formed by switching the transmission.

  Further, the liquid crystal display panel 131 is provided with a liquid crystal display element and a driving driver in which liquid crystal is sealed between a pair of translucent substrates having a polarizing film and a transparent electrode, and the display surface is provided by a vehicle user. It is provided at a position or angle facing the vehicle user so that it can be seen.

  The backlight 132 uses a light source composed of a light emitting diode, and is provided on the opposite side of the display surface of the liquid crystal display panel 131. In this case, the backlight 132 can be applied with an LED chip element provided on the circuit board, and has a circuit configuration that can change the output luminance in accordance with a control signal from the control means 110. Note that the backlight 132 may be an edge light system using a light guide. Further, it is possible to irradiate the liquid crystal display panel 1 with illumination light from the backlight 132 without any spots by interposing a diffusion plate or the like on the back side of the liquid crystal display panel 131. As the display unit 130, for example, a self-luminous display device such as an organic EL panel can be applied.

  The control means 110 displays a display image according to display conditions determined by desired vehicle information D1, such as vehicle speed, travel distance, remaining capacity, alarm, content information D2, and user operation such as a switch provided in the vehicle-mounted instrument 100. Form. By the control means 110, the content information D2 is converted into external device display information P2, and the vehicle information D1 is converted into various information P3. As shown in FIG. 3A, the display area of the liquid crystal display panel 131 is divided into a first display area 131a and a second display area 131b.

  When the connection with the external device 200 is established, the control means 110 displays an icon (external device connection symbol) P1 indicating that the connection has been established in the second display area 131b as shown in FIGS. The external device display information P2 or various information P3 related to the state of the vehicle is displayed in the first display area 131a. In addition to this, the current time and the like may be displayed in the second display area 131b. The control means 110 updates the first and second display areas 131a and 131b periodically or by updating the external device display information P2 and various information P3.

  When a communication error occurs between the in-vehicle instrument 100 and the external device 200 due to external noise or when reception of the content information D2 from the external device 200 is stopped, the content indicated by the external device display information P2 is not updated. . For example, the display state shown in FIGS. 4 and 5 continues to be unchanged.

On the other hand, the control means 110 measures the reception interval of the content information D2 after receiving the content information D2. If the content information D2 cannot be received within the predetermined time T, it is determined that a communication error has occurred for the content information D2. When the control unit 110 determines that the communication error has occurred, for example, as shown in FIGS. 6A and 7A, an icon (symbol) C1 indicating the communication error is displayed so as to overlap the icon P1. The liquid crystal display panel 131 is controlled. At this time, when the external device display information P2 is displayed on the display unit 130, an icon (symbol) C2 indicating a communication error is displayed so as to overlap the external device display information P2. The icons C1 and C2 are similar in shape, and the icon C2 can be related to the external device connection symbol P1, which is a communication-related display.
The predetermined time T can be provided for each item of the content information D2. When the content information D2 cannot be received, for example, the icon C2 is displayed only for the corresponding external device display information P2. It is also good. Furthermore, it is desirable to display the icon C1 when any one piece of content information D2 cannot be received within a predetermined time T.

  Because the icons C1 and C2 are similar, the user can recognize the relevance of the display contents. For example, even if the screen configuration does not display the external device display information P2, it is recognized that a communication timeout has occurred. can do. Moreover, these effects can also be heightened by making the icons C1 and C2 the same color.

  Further, when the control unit 110 determines that a communication error has occurred, for example, as shown in FIGS. 6B and 7B, the character string indicating the error occurrence or the error content to the user or the countermeasure method is shown. The liquid crystal display panel 131 is controlled to display C3. At this time, it may be replaced with the character information of the external device display information P2. When the user operates a switch or the like connected to the vehicle-mounted instrument 100, the control means 110 displays the display shown in FIG. 6B and FIG. 6A, or FIG. 7B and FIG. The liquid crystal display panel 131 may be controlled to be switched.

  Next, processing until a display image is determined based on the item of content information (external device information) D2 will be described with reference to the flowchart shown in FIG.

  The control unit 110 periodically performs the following processing when the IGN or ACC of the vehicle is on and the connection to the external device 200 is possible, or an error occurs after connection and reconnection is possible (see FIG. 8).

  The control unit 110 determines whether or not the content information D2 can be received from the external device 200 (step S1). If the content information D2 cannot be received from the external device 200 based on this determination (step S1 :). No), go to step S3. When the content information D2 is received (step S1: Yes), the control unit 110 sets a timeout time (predetermined time) T of the content information D2, and starts measuring timeout (step S2). Note that the timeout time T can be determined using the type of the content information D2 and the table data stored in the ROM 111.

  When a timeout occurs (step S3: Yes), the control unit 110, for example, as shown in FIGS. 6 and 7, icons P1, C1, C2, external device display information P2 based on content information D2, various information P3, characters The liquid crystal display panel 131 is controlled to display the column C3 (step S4).

  When the time-out has not occurred (step S3: No), the control unit 110 displays the icon P1, the external device display information P2 based on the content information D2, and various information P3 as shown in FIGS. 4 and 5, for example. Then, the liquid crystal display panel 131 is controlled (step S5). When the content information D2 has never been received, the control unit 110 controls the display area of the external device display information P2 to be blank.

  By repeating the above processing, when an abnormality occurs in communication with an external device, the vehicle display device can recognize that the displayed information may be different from the latest information.

  In addition, the control unit 110 controls the display unit 130 so that the icon C1 is displayed on the icon P1 and / or the icon C2 is displayed on the external device display information P2, so that the user can connect the vehicle-mounted instrument 100 to the external device 100. It can be recognized that a communication timeout has occurred with the device 200.

  When the control unit 110 controls the display unit 130 to display the character string C3 together with the icons C1 and C2, the user can recognize the occurrence of an error, the content of the error, a coping method, and the like.

  By determining the timeout time T for each item of the content information D2, it is possible to set an appropriate timeout time T according to the update cycle of each item. Can be recognized quickly. The vehicular display device 100 sets the timeout time T in advance according to the item and use of the content information D2, for example, by setting the timeout time T to be smaller as the display change period and timing are shorter, thereby causing erroneous recognition. Therefore, it is possible to make an optimum abnormality determination with a low possibility of occurrence of the error and display and output each information with high reliability.

  The present invention is not limited to the above embodiment, and various modifications are possible. For example, as the symbols, in the above-described embodiment, the icons C1 and C2 are triangular marks representing warnings. However, the same effect can be expected with exclamation marks, question marks, cross marks, symbols representing cuts, and the like. Further, the control means can display both icons C1 and C2, or can display either one of them, according to a predetermined condition such as an elapsed time after another display type or connection state is changed. It can be switched accordingly.

  In the above-described embodiment, the case where the vehicle-mounted instrument 100 and the external device 200 are connected by the short-range radio wave transmission / reception function is illustrated, but the same effect can be expected even if they are connected by a cable or the like.

  In the above-described embodiment, for example, when the user operates a switch or the like connected to the vehicle-mounted instrument 100, the switching between FIG. 6 (a) and FIG. 6 (b) or FIG. 7 (a) and FIG. The control means 110 displays the display means 130 so as to display FIG. 6 (a) or FIG. 7 (a) when the vehicle is traveling and FIG. 6 (b) or FIG. 7 (b) when the vehicle is stopped. Can be controlled. By performing such control, a coping method can be shown when a user operation becomes possible.

  Further, the control means 110 may be configured to control the display means 130 so as to switch the display from FIG. 6A to FIG. 6B or FIG. 7A to FIG.

  The vehicle display device of the present invention is suitable for a combination meter for automobiles.

100 Vehicle display device (in-vehicle instrument)
110 Control means 111 ROM
112 RAM
113 CPU
114 Input / Output Interface 115 Drawing Circuit 116 First Communication Interface 120 Connection Unit 121 Second Communication Interface 130 Display Unit 131 LCD (Liquid Crystal Display Panel)
131a First display area 131b Second display area 132 LED (backlight)
200 External Device 210 Control Unit 220 Connection Unit 300 ECU
C1 icon (symbol)
C2 icon (symbol)
C3 Character string D1 Vehicle information D2 Content information (external device information)
P1 icon (external device connection symbol)
P2 External device display information P3 Various information T Predetermined time

Claims (3)

A connection means that can be connected to a portable external device and that can input external device information sent from the external device;
Display means for displaying external device display information based on the external device information and various information including vehicle information;
Control means for operating the connection means and the display means,
The control means causes the display means to display an external device connection symbol indicating that it is connected to the external device,
When the external device information is not obtained within a predetermined time, a display indicating the external device display information and / or a symbol indicating a communication error is displayed over the external device connection symbol. Display device for a vehicle.   The vehicle display device according to claim 1, wherein the control unit displays a character string together with a symbol indicating the communication error. The vehicle display device according to claim 1, wherein the predetermined time is determined for each item of the external device information.

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