JP2009012651A - In-vehicle display equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an in-vehicle display equipment capable of restricting display to a driver during traveling of the vehicle regardless of steering wheel specifications of the vehicle. <P>SOLUTION: Codes of the vehicle specification and history information are obtained from ECU 2 for memorizing the codes of the vehicle specification and the history information, and the sending information of the vehicle is discriminated from the obtained codes of the vehicle specification and the history information. Since the steering wheel specification of the vehicle can be grasped by the discriminated sending information, a display part capable of looking the displayed image from D seat of the vehicle is specified while making the sending information as origin, and regarding the specified display part, selection of a predetermined image source or switching to the predetermined image source is forbidden. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a display device mounted on a vehicle such as an automobile.

Conventionally, as disclosed in, for example, Patent Document 1, in an in-vehicle electronic device having a plurality of display units, blinker information, brake information, gear information, steering wheel information, vehicle speed information, seats detected by a state detection unit At least one display unit is selected from a plurality of display units based on the belt information, sound information, and information that the gasoline amount is below a certain level, and the data selected from the data source is displayed on the selected display unit. .
JP 2006-71418 A

  As in the above-described prior art, a display device having a plurality of display units in a vehicle interior, or a display unit or display unit that displays a video source that is divided into a plurality of display regions and is displayed in each display region. On the other hand, when a display device that displays different video sources depending on the user's viewing direction (viewing angle direction) is mounted on a vehicle such as an automobile, the driver's ability to concentrate on driving and the surrounding area while driving the vehicle. Video sources that prevent confirmation (for example, entertainment video sources such as TV video and DVD video) have a mechanism to limit the display of the video source so that the driver cannot see it while driving. Necessary.

  However, the above-mentioned conventional technology does not regulate display to the driver while the vehicle is running, so there is a problem that the driver can see the entertainment video source even while driving. Safety is not fully considered.

  Furthermore, although the driver's seating position varies depending on the handle specification (right handle specification or left handle specification), the handle specification cannot be determined from various information detected by the state detection means of the prior art (in other words, the driver In this respect, the display to the driver who is traveling the vehicle cannot be restricted.

  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 display device that can regulate display to a driver while the vehicle is traveling, regardless of the vehicle steering wheel specifications.

The vehicle-mounted display device according to claim 1, which has been made to achieve the above object, is arranged in a vehicle room so that the display directions of each of the plurality of display units are different, and performs switching of a video source for each display unit. In what has a control means,
Information receiving means for receiving the specification information from the in-vehicle device that stores the specification information of the vehicle;
A destination information discriminating means for discriminating the destination information of the vehicle from the specification information received by the information receiving means;
Based on the destination information determined by the destination information discriminating means, the display unit specifying means for specifying the display unit from which the displayed video can be viewed from the driver seat of the vehicle, among the plurality of display units,
The switching control unit includes a prohibiting unit that prohibits switching to a predetermined video source for the display unit specified by the display unit specifying unit.

  Since the vehicle steering wheel specifications differ depending on the destination region and country, the position of the driver's seat also changes depending on the destination region and country. Therefore, in the in-vehicle display device of the present invention, the specification information is acquired from the in-vehicle device that stores the specification information of the vehicle, and the destination information of the vehicle is determined from the acquired specification information. Based on the determined destination information, the vehicle steering wheel specifications can be grasped. Therefore, the display unit from which the displayed image can be viewed from the driver seat of the vehicle is identified based on the destination information. The switching to a predetermined video source is prohibited.

  As a result, it is possible to absorb the difference in specifications of the in-vehicle display devices that have been set for each destination region, so that all types can be made common regardless of the destination region and destination country. As a result, regardless of the vehicle steering wheel specifications, it is possible to select and switch the video source for the display restriction to the driver while the vehicle is traveling.

The in-vehicle display device according to claim 2, wherein the display area of the display unit is divided into a plurality of parts, and the display areas of the divided display areas are arranged in the vehicle interior so that the display directions are different from each other. In those equipped with switching control means for switching
Information receiving means for receiving the specification information from the in-vehicle device that stores the specification information of the vehicle;
A destination information discriminating means for discriminating the destination information of the vehicle from the specification information received by the information receiving means;
Based on the destination information determined by the destination information determining means, a display area specifying means for specifying a display area from which a displayed image can be viewed from a driver's seat of the vehicle among a plurality of display areas, and
The switching control means includes a prohibiting means for prohibiting switching to a predetermined video source for the display area specified by the display area specifying means.

  In this way, since the steering wheel specification of the vehicle can be grasped by the destination information determined by the destination discrimination means, the display area where the displayed video can be viewed from the driver's seat of the vehicle based on this destination information, For the specified display area, switching to a predetermined video source is prohibited. As a result, regardless of the vehicle steering wheel specifications, it is possible to select and switch the video source for the display restriction to the driver while the vehicle is traveling.

The in-vehicle display device according to claim 3 includes a switching control unit that arranges a display unit capable of displaying different video sources depending on the viewing angle direction of the user in a vehicle interior and switches the video source for each viewing angle direction. In what we have,
Information receiving means for receiving the specification information from the in-vehicle device that stores the specification information of the vehicle;
A destination information discriminating means for discriminating the destination information of the vehicle from the specification information received by the information receiving means;
Based on the destination information determined by the destination information determination means, the viewing angle direction specifying means for specifying the viewing angle direction from which the displayed image can be viewed from the driver seat of the vehicle,
The switching control means includes a prohibiting means for prohibiting switching to a predetermined video source for the viewing angle direction specified by the viewing angle direction specifying means.

  In this way, since the steering wheel specification of the vehicle can be grasped by the destination information determined by the destination discrimination means, the viewing angle direction in which the displayed image can be viewed from the driver seat of the vehicle based on this destination information, Regarding switching of the video source that can be viewed from the specified viewing angle direction, switching to a predetermined video source is prohibited. As a result, regardless of the vehicle steering wheel specifications, it is possible to select and switch the video source for the display restriction to the driver while the vehicle is traveling.

According to the in-vehicle display device according to claim 4, the specification information of the vehicle includes handle specification information indicating whether the vehicle is a right handle specification or a left handle specification, a destination area information indicating a destination area of the vehicle, And destination country information that represents the destination country of the vehicle,
The destination information discriminating means, when the reception state of the vehicle specification information by the information receiving means is unstable, according to the priority set in advance for each information of the steering wheel specification information, the destination area information, and the destination country information It is characterized in that the destination information of the vehicle is discriminated in order from the information with the highest priority.

  When the specification information is received from the in-vehicle device that stores the vehicle specification information, the vehicle specification information cannot be stably received due to the influence of electromagnetic noise or the like from a motor mounted in the vicinity thereof. In such a case, the destination information of the vehicle is preferentially determined from the steering wheel specification information having a high priority according to a preset priority. Thereby, even if the reception state of the specification information is unstable, it is possible to determine the destination information.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a configuration of the in-vehicle display device 3 and its periphery. The in-vehicle display device 3 includes two display units 3a and 3b, and is disposed near the instrument panel in the vehicle interior. The display units 3a and 3b are arranged so that their display directions are different. Specifically, the display unit 3a is arranged so that it can be seen from the occupant seated in the right front seat with respect to the front of the vehicle, and the display unit 3b is viewed from the occupant seated in the left front seat with respect to the front of the vehicle. Is arranged to be able to.

  The display units 3a and 3b shown in FIG. 1 each select a video source to be displayed (manual selection by a user operation, a video source to be displayed while the vehicle is running, and a video source to be displayed while the vehicle is stopped). Automatic selection) and switching to the selected video source is possible, and the same video source can be displayed, or different video sources can be displayed.

  The video source selection / switching control is performed by a control device (not shown) built in the in-vehicle display device 3. Video sources include, for example, video sources such as air conditioner and audio operating panel images, operation panel images for input operations, map images from navigation systems, vehicle rear images captured by in-vehicle cameras, There are also entertainment-related video sources such as TV video and DVD video.

  The vehicle LAN 1 enables communication connection between the ECU 2 and the vehicle-mounted display device 3 by wired (or wireless) communication. The ECU 2 is, for example, an engine control ECU that performs engine fuel injection control, and performs fuel injection control based on a vehicle speed pulse signal, an engine speed signal, a throttle opening signal, and the like received via the vehicle LAN1.

  This ECU 2 is a vehicle specification / feature consisting of steering wheel specification information indicating whether the vehicle has a steering wheel specification (whether it is a right steering wheel specification or a left steering wheel specification), destination region information indicating a destination region, and destination country information indicating a destination country. Information is stored as a code, and when an information request command is received from the in-vehicle display device 3 via the vehicle LAN 1, the vehicle specification / feature information code is transmitted to the in-vehicle display device 3 as an information response command.

  As shown in FIG. 2, the vehicle specification / feature information code is represented by alphabets (which may be coded using ASCII codes or numerical values) corresponding to each of the steering wheel specification, the destination region, and the destination country. In this embodiment, as codes, “B”, “B”, “B”, handle specification information: B (meaning left handle specification), destination area information: B (meaning North America), destination country: A description will be given assuming that B (meaning the United States of America) is stored in the ECU 2.

  The in-vehicle display device 3 stores the vehicle specification / feature information table shown in FIG. 2. When the vehicle specification / feature information code as an information response command received from the ECU 2 is received, Determine the destination information. Specifically, the code received from the ECU 2 is collated with the vehicle specification / feature information table to determine the steering wheel specification, the destination region, and the destination country. In this embodiment, codes “B”, “B”, and “B” are collated with the vehicle specification / feature information table, so that the steering wheel specification: the left steering wheel specification, the destination region: the North American region, and the destination country: the United States. This is determined as the destination of the vehicle.

  In addition, after the in-vehicle display device 3 is attached to the vehicle, any default destination information set in advance may be used until the destination information is determined. In addition, when the vehicle specification / feature information code is received from the ECU 2 via the vehicle LAN 1, if an influence such as electromagnetic noise of a motor mounted in the vicinity is mixed, the vehicle specification / feature information code is stably received. I can't do that. As described above, when the reception state of the vehicle specification / feature information code is unstable, even if the vehicle specification / feature information code received via the vehicle LAN 1 is checked against the vehicle specification / feature information table, Information may become indistinguishable.

  Therefore, in such a case, according to a preset priority order (for example, as shown in FIG. 2, the order of the steering wheel specification> the destination region> the destination country), the vehicle specification is given priority from the steering wheel specification with a higher priority. It is good to determine the destination information. This makes it possible to determine the destination information even if the reception state of the vehicle specification / feature information code is unstable. If the destination information according to the priority order cannot be discriminated at all, the default destination information may be used.

  When the destination information is confirmed, the in-vehicle display device 3 can grasp the specification of the steering wheel of the vehicle, so that the displayed image can be viewed from the driver seat (hereinafter referred to as D seat) of the vehicle based on the destination information. It is specified whether the display unit is the display unit 3a or 3b. Then, the specified display unit is set so as to prohibit selection of a predetermined video source or switching to the predetermined video source.

  Specifically, as shown in FIG. 2, the vehicle of the present embodiment has a left-hand drive specification, so the D seat is on the left side with respect to the front of the vehicle, and the passenger seat (P seat) is on the right with respect to the front of the vehicle. It is. Therefore, for the display unit 3b arranged so that it can be viewed from the occupant (driver) seated in the left front seat (D seat) with respect to the front of the vehicle, an entertainment video source such as a TV video or a DVD video. Or switching to such a video source is prohibited.

  Thereby, the display of the video source to the driver can be restricted so that the driver cannot view the entertainment video source while driving. On the other hand, the display unit 3a arranged so that it can be viewed from the passenger (passenger) seated in the right front seat (P seat) with respect to the front of the vehicle can be selected and switched to any video source.

  The video source selection / switching prohibition setting for the display unit 3b may be set only while the vehicle is running, and the setting may be automatically or manually canceled when the vehicle is stopped. This is because when the vehicle is stopped, it is unlikely that the driver's ability to concentrate on driving and the surrounding area will be disturbed.

  Next, video source selection / switching control processing by the in-vehicle display device 3 will be described with reference to the flowchart shown in FIG. This processing is not executed during the display period of the in-vehicle display device 3, but is executed when the in-vehicle display device 3 is turned off (ACC_OFF) or when the power is turned on (ACC_ON) as described below. It is. As shown in FIG. 3, after the in-vehicle display device 3 is mounted on the vehicle and the power line (+ B) is connected to the in-vehicle display device 3 (step S1), the position of the ignition key of the vehicle is turned on by the driver (ACC_ON ) (Step S2), in step S3, an information request command is periodically transmitted to the ECU 2 via the vehicle LAN1 at regular time intervals. The ECU 2 that has received this information request command transmits the vehicle specification / feature information code to the in-vehicle display device 3 a plurality of times (here, 5 times) or repeatedly for a certain time as an information response command.

  When the in-vehicle display device 3 receives the vehicle specification / feature information code (step S3), in step S4, it is determined whether or not the same information, that is, the same code is received a plurality of times (here, five times). To do. If an affirmative determination is made in step S4, the process proceeds to step S6. On the other hand, if a negative determination is made, it is determined in step S9 whether or not the code has been correctly received out of five times. If an affirmative determination is made in step S9, the received code is checked against the vehicle specification / feature information table in step S10 to determine the destination information, and the determined destination information is determined as default destination information. And remember. On the other hand, if a negative determination is made in step S9, the process proceeds to step S3, and the above-described process is repeated.

  In step S6, the received code is checked against the vehicle specification / feature information table to determine the destination information. In step S7, the determined destination information is determined as the destination of the vehicle, and in step S8, the default destination is rewritten to the determined destination. In step 11, the vehicle steering wheel specification is grasped from the destination determined in step S7 or step S10, and each display direction of the display units 3a and 3b (in this embodiment, the display unit) is determined from the grasped steering wheel specification. 3a determines the P seat direction, and the display unit 3b determines the D seat direction).

  In step S12, the display unit 3b in the D-seat direction is set to prohibit selection of an entertainment-type video source such as a TV video or a DVD video, or switching to such a video source. When this video source selection / switching prohibition setting is made, in step S13, display of the video source on the display units 3a and 3b is started.

  As described above, the in-vehicle display device 3 of the present embodiment described above is based on the fact that the specification of the vehicle handle differs depending on the destination region and the destination country, and the position of the driver seat also changes depending on the destination region and the destination country. That is, the in-vehicle display device 3 acquires the vehicle specification / feature information code from the ECU 2 that stores the vehicle specification / feature information code, and discriminates the destination information of the vehicle from the acquired vehicle specification / feature information code. . Since the steering specification of the vehicle can be grasped from the determined destination information, the display unit from which the displayed video can be viewed from the D seat of the vehicle is specified based on the destination information. The selection of a predetermined video source or the switching to the predetermined video source is prohibited.

  As a result, it is possible to absorb the difference in specifications of the in-vehicle display devices that have been set for each destination region, so that all types can be made common regardless of the destination region and destination country. As a result, regardless of the vehicle steering wheel specifications, it is possible to select and switch the video source for the display restriction to the driver while the vehicle is traveling.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.

  For example, the in-vehicle display device 3 of the present embodiment has been described with respect to the display units 3a and 3b arranged in the vehicle interior so that the display directions thereof are different, but the display area of the display unit is divided into a plurality of parts. Therefore, the present invention can be applied even if the display areas of the divided display areas are arranged in the vehicle interior such that the display directions thereof are different. That is, the in-vehicle display device 3 can view the displayed video from the D seat of the vehicle in the plurality of display areas based on the destination information determined from the vehicle specification / feature information code received from the ECU 2. A display area is specified, and selection of a predetermined video source or switching to the predetermined video source is prohibited for the specified display area. As a result, in the in-vehicle display device 3 having a display unit divided into a plurality of display areas, it is possible to select and switch a video source targeted for display restriction to the driver while the vehicle is traveling, regardless of the vehicle handle specification. It becomes.

  In addition, for example, the present invention can be applied even if a display unit that can display different video sources depending on the viewing angle direction of the user is disposed in the vehicle interior in association with the above modification. That is, the in-vehicle display device 3 can view the displayed video from the D seat of the vehicle in the plurality of display areas based on the destination information determined from the vehicle specification / feature information code received from the ECU 2. A viewing angle direction is specified, and selection of a predetermined video source or switching to the predetermined video source is prohibited for the specified viewing angle direction. Thereby, in the in-vehicle display device 3 having a display unit that can display different video sources depending on the viewing angle direction of the user, regardless of the steering wheel specification of the vehicle, the video targeted for the display restriction to the driver while driving the vehicle Source selection / switching is possible.

It is a block diagram which shows the structure of the vehicle-mounted display apparatus 3 and its periphery. It is the figure which showed the vehicle specification and feature information table. It is a flowchart for demonstrating the switching control process of a video source.

Explanation of symbols

1 Vehicle LAN
2 ECU
3 In-vehicle display devices

Claims (4)

In the vehicle-mounted display device that is arranged in the vehicle interior so that the display directions of each of the plurality of display units are different, and includes switching control means for switching the video source for each display unit,
Information receiving means for receiving the specification information from an in-vehicle device that stores the specification information of the vehicle;
A destination information discriminating means for discriminating the destination information of the vehicle from the specification information received by the information receiving means;
Based on the destination information determined by the destination information determining means, a display part specifying means for specifying a display part from which the displayed video can be viewed from the driver seat of the vehicle, out of the plurality of display parts, Prepared,
The vehicle-mounted display device, wherein the switching control unit includes a prohibiting unit that prohibits switching to a predetermined video source for the display unit specified by the display unit specifying unit. An in-vehicle device that includes a switching control unit that divides a display area of the display unit into a plurality of parts, and is arranged in a vehicle interior so that the display directions of the divided display areas are different, and performs switching of a video source for each display area. In display equipment,
Information receiving means for receiving the specification information from an in-vehicle device that stores the specification information of the vehicle;
A destination information discriminating means for discriminating the destination information of the vehicle from the specification information received by the information receiving means;
Based on the destination information determined by the destination information determining means, display area specifying means for specifying a display area in which the displayed video can be viewed from the driver's seat of the vehicle among the plurality of display areas; Prepared,
The vehicle-mounted display device, wherein the switching control means includes prohibiting means for prohibiting switching to a predetermined video source for the display area specified by the display area specifying means. In an in-vehicle display device provided with a switching control unit that arranges a display unit that can display different video sources depending on the viewing angle direction of the user in a vehicle interior and switches the video source for each viewing angle direction,
Information receiving means for receiving the specification information from an in-vehicle device that stores the specification information of the vehicle;
A destination information discriminating means for discriminating the destination information of the vehicle from the specification information received by the information receiving means;
Based on the destination information determined by the destination information determining means, the viewing angle direction specifying means for specifying the viewing angle direction from which the displayed image can be viewed from the driver seat of the vehicle,
The vehicle-mounted display device, wherein the switching control means includes prohibiting means for prohibiting switching to a predetermined video source for the viewing angle direction specified by the viewing angle direction specifying means. The vehicle specification information includes handle specification information indicating whether the vehicle is a right-hand drive specification or a left-hand drive specification, destination region information indicating a destination region of the vehicle, and a destination country indicating a destination country of the vehicle. Contains information,
The destination information discriminating means is preset for each information of the steering wheel specification information, the destination area information, and the destination country information when the reception state of the vehicle specification information by the information receiving means is unstable. The vehicle-mounted display device according to any one of claims 1 to 3, wherein the destination information of the vehicle is determined in order from the information with the highest priority according to the priority.

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