JP4884098B2 - In-vehicle display device - Google Patents

Description

  The present invention relates to an on-vehicle display device having a so-called multiview function.

As a so-called multi-view display in which different images can be visually recognized from different directions on a common (single) display screen, for example, a parallax barrier is provided in front of the liquid crystal panel, and light from the backlight is supplied for each pixel. There is known one that can display different information (images) on the left and right by sorting the traveling directions (see, for example, Patent Document 1). By mounting such a display device on the vehicle, the passenger in the passenger seat is watching TV images and DVD (Digital Versatile Disc) images on the passenger side screen while the driver is watching the navigation image on the driver side screen. It is possible to view other images and images such as an audio screen.
JP 2005-78080 A

By the way, in the on-vehicle multi-view display as described above, interrupt information such as traffic information is generated when TV images, DVD images, audio screens, etc. are displayed on both the driver side screen and the passenger side screen. Then, an image related to the interrupt information is displayed on the driver's seat screen and the passenger seat screen.
A passenger who views the passenger side screen is interrupted because the interrupt image such as traffic information is displayed. In order to display an interrupt image on the driver's side screen, it is necessary to interrupt the display of the TV image, DVD image, audio screen, etc. before the occurrence of the interrupt, or to display the interrupt image on top of them. Viewing is also prevented on the passenger seat side screen.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an interrupt image when an interrupt image display request is generated in an in-vehicle display device having a so-called multi-view display function. It is an object of the present invention to provide an in-vehicle display device that can be inserted only in a necessary viewing direction and can continuously view a displayed video or image.

The present invention provides a display unit capable of displaying separate images for two viewing directions on the driver's seat side and the passenger's seat side on the same screen, and in the state where a common video is displayed in the two viewing directions, When the display request is generated, without displaying the interrupt image to interrupt the image unnecessary viewing direction, possess a display control means for displaying an interrupt image to another viewing direction, and wherein the display control unit, the interrupt image When a display request occurs, the display contents in the viewing direction on the driver's seat side are reduced while the display state in the viewing direction on the passenger seat side is maintained, and the newly formed displayable area is interrupted by the reduced display. It is characterized by displaying an image .
According to this configuration, the interrupt image can be displayed only in the viewing direction that requires it, and viewing of the content being displayed in the viewing direction that does not require the interrupt image is not hindered.
In addition, it does not hinder the viewing of the content being displayed in the viewing direction on the passenger seat side that does not require an interrupt image, and the interrupt image is displayed together with the displayed content in the viewing direction on the driver seat side. Interruption information can be acquired and a video or image being displayed can be continuously viewed.

  According to the present invention, since the common video can be displayed on the first screen and the second screen by independently changing the size, various video displays are possible, and the multi-view function has been provided that greatly improves usability. An in-vehicle display device is obtained.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, exemplary embodiments of the invention will be described with reference to the accompanying drawings.
FIG. 1 is a diagram for explaining a basic configuration of an in-vehicle display device according to an embodiment of the present invention.
As shown in FIG. 1, this in-vehicle display device includes a display control unit 10 as a display control unit, a display unit 100, and the like.
The display control unit 10 is supplied with the image data DT1 from the first image source 300A and the image data DT2 from the second image source 300B, and includes the first and second image data DT1 and DT2. The image data ADT is output to the common display unit 100. A specific configuration of the display control unit 10 will be described later. The first and second image sources 300A and 300B are, for example, a video signal source 250 (to be described later) composed of an analog / digital TV tuner, a DVD playback device, etc., an HDD (Hard Disk Drive) 50 storing map information, and the like. Consists of

  As will be described later, the display unit 100 includes a liquid crystal panel, a backlight, a parallax barrier, and the like, and displays a first image IM1 based on the first image data DT1 in the right direction (driver's seat (hereinafter referred to as D seat). The driver's seat screen (D seat screen) that can be viewed by the observer OBR from the field of view (viewing direction) and the second image IM2 based on the second image data DT2 in the left direction (passenger seat (hereinafter, P A passenger seat screen (P seat screen) that can be viewed by the observer OBL from the field of view (viewing direction). The D seat screen and the P seat screen are the same screen, but individual images can be displayed according to the viewing direction. A specific configuration of the display unit 100 will be described later.

FIG. 2 is a diagram showing a vehicle-mounted display device mounted on a vehicle, and FIG. 3 is a cross-sectional view showing the structure of a display unit.
As shown in FIG. 2, the display unit 100 of the in-vehicle display device is built in, for example, a dashboard portion of the vehicle, and the display unit 100 includes a driver seat DS and a passenger seat AS as shown in FIG. Arranged between.
Further, as shown in FIG. 2, an operation panel 150 including a plurality of operation buttons for various operations is provided below the display unit 100.
An occupant seated in the driver seat DS becomes the observer OBR, and an occupant seated in the passenger seat AS becomes the observer OBL. These passengers can simultaneously view the first image IM1 and the second image IM2 displayed on the display unit 100 from the driver seat DS side or the passenger seat AS side, respectively.

  As shown in FIG. 3, the display unit 100 includes a liquid crystal panel 110, a backlight 120 that receives illumination light from the back side of the liquid crystal panel 110, a touch panel 130 (not shown) provided on the front side of the liquid crystal panel 110, and the like. ing.

As shown in FIG. 3, the liquid crystal panel 110 is a color filter substrate having a polarizing plate 111, a TFT (Thin Film Transistor) substrate 112, a liquid crystal layer 113, and pixels of three primary colors RGB arranged in order from the backlight 120 side. 114, a parallax barrier 115, a glass plate 116, a polarizing plate 117, and the like.
The liquid crystal panel 110 has, for example, a display screen in which 800 pixels in the horizontal direction and 480 pixels in the vertical direction are arranged. The display screen includes a left display pixel 118 and a right display pixel 119 in the horizontal direction. Are arranged alternately.

As shown in FIG. 3, the parallax barrier 115 is formed in a stripe shape and includes a shielding part and a light-transmitting part, and the shielding part is disposed between the adjacent left display pixel 118 and right display pixel 119. Is done. By disposing the parallax barrier 115 on the front surface of the color filter substrate 114, the illumination light transmitted through the left display pixel 118 selectively passes through the light-transmitting part of the parallax barrier 115 selectively toward the left side, and is displayed on the right side. Of the illumination light transmitted through the pixel 119, only the illumination light directed toward the right side selectively passes through the light transmitting portion of the parallax barrier 115. As a result, as shown in FIG. 3, the first image IM1 can be viewed from the right side (driver's seat side) of the liquid crystal panel 110, and the second image IM2 can be viewed from the left side (passenger seat side). ing.
The parallax barrier 115 can be the same as those disclosed in JP-A-10-123461 and JP-A-11-84131.

4 is a functional block diagram of the in-vehicle display device, and FIG. 5 is a functional block diagram of the image processing circuit.
As shown in FIG. 4, the in-vehicle display device includes a display control unit 10, an HDD 50, a voice processing circuit 80, a touch panel 130, an operation panel 150, an operator detection unit 160, a position detection unit 170, and the like.

The HDD 50 stores map information, audio information, and the like. These pieces of information are read by a processor 11 (to be described later) of the display unit 10 and the map information is output to the display control unit 10 as a drawing parameter.
The audio processing circuit 80 reproduces various audio data from the display control unit 10 (processor 11) and outputs audio from the speaker SP provided in the vehicle.

  The touch panel 130 is formed in a transparent sheet shape and is attached to the front surface of the liquid crystal panel 110 described above. When a driver or passenger in the driver's seat operates the operation buttons or the like displayed on the screen of the liquid crystal panel 110. The position touched by the passenger's finger or the like is detected and output to the display control unit 10 (processor 11).

The operator detection unit 160 detects whether the person who operates the touch panel 130 or the operation panel 150 is an operator on the driver's seat DS side or an operator on the passenger seat AS side, and displays the detection signal. It outputs to the control part 10 (processor 11).
As a detection method of the operator detection unit 160, for example, a pulse-like electric signal or vibration having a different frequency is given to an operator on the driver's seat side and an operator on the passenger's seat side, and each operator operates the touch panel 130 or When the operation panel 150 is touched, the frequency of the electric signal or vibration is detected and identified by the display control unit 10 (processor 11), thereby determining whether the operation is from the driver's side or the passenger's side. It can be set as the structure to do. In addition, sensors using infrared rays or the like are provided on both the left and right sides of the liquid crystal panel 110 (touch panel 130), and by this sensor, whether the operator's hand is touching the touch panel 130 from the driver side or the touch panel from the front passenger side. It is also possible to detect whether 130 is touched.
Furthermore, without being limited to such a method, for example, a detection method as disclosed in JP-A-11-248466 can be employed.

  The position detection unit 170 includes an antenna (or a receiver) that receives GPS radio waves transmitted from a GPS (Global Positioning System) satellite, and based on the GPS radio waves, position coordinates indicating the current location of the vehicle, and a traveling direction And the position detection signal is output to the display control unit 10. When searching for a route, the display control unit 10 searches for a guidance route from the current point to the destination indicated by the position detection signal from the position detection unit 170 and displays the search result on the display unit 100 (liquid crystal panel 110). Further, at the time of route guidance, the route guidance is performed by displaying the movement status of the current position on the liquid crystal panel together with the map based on the position detection signal PS. Furthermore, as will be described later, the display control unit 10 responds to an event when an audio screen (a screen for displaying a song being played or a playback time) is displayed on the display unit 100 due to the occurrence of various events. It also has a function of inserting and displaying an interrupt image. Examples of interrupt images include travel-related images, such as traffic information (for example, traffic jam information, intersection information, etc.), ETC (Electronic Toll Collection System) toll collection information (for example, billing confirmation screen when passing through a toll booth) and hands-free It is a telephone (display of a notification screen at the time of an incoming call or a call time at the time of a call), a detailed guide map of a navigation device, and the like.

As shown in FIG. 4, the display control unit 10 includes a processor (CPU) 11, a RAM (random access memory) 12, a ROM (read only memory) 13, a drawing circuit 20, an image processing circuit 30, a video selection circuit 40, and the like. Composed.
The processor 11 is connected to the RAM 12, the ROM 13, the drawing circuit 20, and the like via the bus BUS so as to be able to exchange various data, and the image processing circuit 30, the video selection circuit 40, the HDD 50, the sound processing circuit 80, the touch panel 130, An operation panel 150, an operator detection unit 160, and the like are also connected, and the entire apparatus is comprehensively controlled by executing a program stored in the ROM 13.
The RAM 12 stores various data necessary for control by the processor 11.

  The drawing circuit 20 receives drawing parameters from the processor 11 through the bus BUS, forms drawing data RGB1 and drawing data RGB2 including two independent RGB data (RGB signals), and outputs them to the image processing circuit 30. Specifically, the drawing circuit 20 draws various images such as navigation images (maps, menu images, etc.), audio setting images (operation buttons) such as analog television, digital television, and DVD.

  The video signal source 250 includes digital and analog TV tuners, DVD playback devices, and the like, and supplies various video signals such as composite video signals to the video selection circuit 40.

  The video selection circuit 40 selects various video signals supplied from the video signal source 250 according to the selection signal SEL from the processor 11, and converts the video signals into video data CMP that can be displayed on the liquid crystal panel 110. Output to 30. The selection signal SEL is generated by the processor 11 according to the operation and setting of the operation panel 150, the touch panel 130, and the like.

As shown in FIG. 5, the image processing circuit 30 includes a distribution circuit 310, size change circuits 330A and 330B, superposition circuits 340A and 340B, a rearrangement circuit 350, a TFT timing control circuit 360, and the like.
These circuits are controlled by various control signals CTL from the processor 11 shown in FIG.

  As shown in FIG. 5, the distribution circuit 310 distributes the video data CMP from the video selection circuit 40 into two, and outputs the distributed video data CMP to the capture circuits 320A and 320B, respectively.

  The size changing circuits 330 </ b> A and 330 </ b> B change the video size of the video data CMP according to the control signal CTL that defines the enlargement or reduction ratio given from the processor 11. The size changing circuits 330A and 330B can change the horizontal size and the vertical size of an image, respectively. The size changing circuit 330A processes data to be displayed on the D seat screen, and the size changing circuit 330B processes data to be displayed on the P seat screen.

  The superposition circuit 340A superimposes the video data from the size change circuit 330A and the drawing data RGB1 in accordance with a control signal CTL instructing the superimposition processing from the processor 11 to form data for one screen. To 350. Note that the superposition circuit 340A outputs only one of the video data and the drawing data RGB1 from the size change circuit 330A to the rearrangement circuit 350 when there is no superposition processing command.

  The superposition circuit 340B superimposes the video data from the size change circuit 330B and the drawing data RGB2 in accordance with the control signal CTL instructing the superimposition processing from the processor 11 to form data for one screen, and the rearrangement circuit To 350. Note that the superposition circuit 340B outputs only one of the video data and the drawing data RGB2 from the size change circuit 330B to the rearrangement circuit 350 when there is no superposition processing command.

  The rearrangement circuit 350 performs rearrangement processing so that the image data for two screens from the superposition circuits 340A and 340B can be displayed on the driver seat side screen and the passenger seat side screen of the liquid crystal panel 110.

  The TFT timing control circuit 360 generates a control signal for the liquid crystal driving circuit (TFT) of the liquid crystal panel 110 based on the data obtained from the rearrangement circuit 350 and outputs the control signal to the liquid crystal panel 110.

Next, an example of display control by the display control unit 10 having the above configuration will be described with reference to FIGS. 6 is a flowchart illustrating an example of processing in the display control unit 10, and FIGS. 7 and 8 are diagrams illustrating display examples of the D seat screen and the P seat screen.
The processor 11 of the display control unit 10 periodically executes the interrupt image display routine shown in FIG.
According to the interrupt image display function provided in the display control unit 10, for example, an interrupt image display request is generated to notify the user of information relating to traffic information (such as traffic jam information) while the vehicle is stopped. The interrupt image display request is generated by various events.
Therefore, it is determined whether or not there is a request for displaying an interrupt image (step ST1). If there is no request, the process ends. If there is an interrupt request, whether the interrupt image is displayed on the D seat screen or not. It is determined whether to display on the seat screen (step ST2). Whether to display the interrupt image on the D seat screen or the P seat screen can be set in advance according to the content of the interrupt image, for example.

When displaying on the D-seat screen, first, a reduction ratio of a preset video size is instructed to the above-described size changing circuit 330A (step ST4), and an overlapping process is instructed to the superposition circuit 340A (step ST4). ST5) Command the drawing circuit 20 to draw an interrupt image to be displayed on the D seat screen.
For example, as shown in FIG. 7, when an interrupt image display request is generated in a state where the audio screen V1 is displayed on both the D seat screen and the P seat screen, the D seat screen is displayed as shown in FIG. The reduced image V2 of the audio screen V1 and the interrupt image INT drawn by the drawing circuit 20 are displayed. At this time, as shown in FIG. 8, the audio screen V <b> 1 is displayed on the P seat screen that does not display the interrupt image while maintaining the size before the occurrence of the interrupt.

  Thus, by changing (reducing) one size of the common audio screen V1 displayed on the D seat screen and the P seat screen independently of the other and displaying it together with the interrupt image INT, the passenger in the D seat can Both the reduced audio screen V2 and the interrupt image INT can be viewed. In addition, the passenger in the P seat can view the audio screen V1 without being interrupted by the interrupt image INT related to traffic information.

  When the interrupt image is displayed on the P seat screen, as shown in FIG. 6, the size change circuit 330B and the superposition circuit 340B are instructed (steps ST7 and ST8), respectively, and the interrupt image displayed on the P seat screen is drawn. Is commanded to the drawing circuit 20 (step ST9).

  As described above, according to the present embodiment, the passenger seat side that does not require an interrupt image relating to traffic information does not hinder viewing of the content being displayed, and the viewing direction on the driver seat side is together with the content being displayed. Since the interrupt image related to the traffic information is displayed, it is possible to acquire the interrupt information related to the necessary traffic information and to continuously view the displayed video and image.

  In the above embodiment, the audio screen has been described as an example of display contents when no interrupt image is generated. However, the present invention is not limited to this, and other types of images and videos may be used. For example, if a DVD call is displayed on both the D seat screen and the P seat screen while the vehicle is stopped and a hands-free call is received, the DVD image and the hands-free screen are split on the D seat screen. It may be displayed. At this time, only the DVD video is displayed on the P seat screen. In addition, when the vehicle is in the route guidance of the navigation system with audio images displayed on both the D seat screen and the P seat screen, a detailed guidance (intersection enlargement) diagram is displayed on the D seat screen together with the audio screen. It may be displayed (divided display). At this time, only the audio image is displayed on the P seat screen.

  In the above embodiment, the case of a liquid crystal panel using a backlight has been described. However, the present invention is not limited to this, and the present invention can also be applied to a display having self-luminous pixels such as an organic EL display.

  In the above-described embodiment, the case where the in-vehicle display device is installed on the dashboard of the vehicle has been described. However, the present invention is not limited to this, and the vehicle-mounted display device can be installed in another place in the vehicle for the rear seat of the vehicle. It is.

It is a figure for demonstrating the basic composition of the vehicle-mounted display apparatus which concerns on one Embodiment of this invention. It is a figure which shows the vehicle-mounted display apparatus mounted in the vehicle. It is sectional drawing which shows the structure of a display part. It is a functional block diagram of a vehicle-mounted display device. It is a functional block diagram of an image processing circuit. It is a flowchart which shows an example of the process in a display control part. It is a figure which shows the state which displayed the common image | video on the D seat screen and the P seat screen. It is a figure which shows the state which displayed the reduced image and the interruption image on the D seat screen, and displayed the common image on the P seat screen.

Explanation of symbols

10. Display control unit (display control means)
11 ... Processor 12 ... RAM
13 ... ROM
20 ... Drawing circuit 30 ... Image processing circuit 40 ... Video selection circuit 50 ... HDD
DESCRIPTION OF SYMBOLS 100 ... Display part 110 ... Liquid crystal panel 120 ... Backlight 130 ... Touch panel 150 ... Operation panel 160 ... Operator detection part 170 ... Position detection part 250 ... Video signal source DS ... Driver's seat AS ... Passenger seat

Claims (1)

A display unit capable of displaying individual images for the two viewing directions on the driver's seat and passenger's side on the same screen;
When a request to display an interrupt image occurs when a common video is displayed in two viewing directions, the interrupt image is not displayed in a viewing direction that does not require an interrupt image, and the interrupt image is displayed in another viewing direction. Display control means;
I have a,
When a request for displaying an interrupt image is generated, the display control means reduces the display content of the viewing direction on the driver's seat side while maintaining the display state of the viewing direction on the passenger seat side, and newly displays the reduced display content. An in-vehicle display device that displays an interrupt image in a formed displayable area .

Images