JP2006184859A - Display controller and display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display controller, capable of performing the automatic change-over control of a display video with respect to a predetermined direction among two or more viewing directions with respect to the contents or a state desired by a user, with respect to a display part, capable of displaying individual videos to the two or more viewing directions on the same screen. <P>SOLUTION: The display controller controls the display part, capable of displaying the individual videos with respect to the two or more viewing directions on a single screen, and is provided with a display control means for changing over control of the display videos with respect to the predetermined direction among two or more viewing directions. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a display control device and a display device, and more specifically, a display control device for performing display control on a display unit capable of displaying individual images for a plurality of viewing directions on the same screen, and the display The present invention relates to a display device including a control device.

2. Description of the Related Art In recent years, various technologies have been proposed for making display content for a driver different from display content for a passenger other than the driver in a display device mounted on a vehicle. For example,
In Patent Document 1 below, as shown in FIG. 21, the light shielding bands 52 on both sides of the transparent cover 51,
53, the light emitted from the belt-like portion group 54 displaying the driver's seat image enters the eyes of the driver DR, but the light emitted from the belt-like portion group 55 displaying the passenger seat image is the driver On the other hand, the light emitted from the belt-like portion group 55 that displays the passenger seat image enters the eyes of the passenger seat occupant PA, but the belt-like portion group that displays the driver seat image. A technique is disclosed in which the light emitted from 54 does not enter the eyes of the passenger occupant PA.

By adopting such a technique, as shown in FIG. 22, the map image 57 by the navigation device is displayed on the display device 56 so that it can be seen only by the driver DR (so as not to be seen by the passenger occupant PA). The DVD image 58 is displayed and can be displayed on the display device 56 so that it can be seen only by the passenger occupant PA (not seen by the driver DR). Thus, even when the vehicle is traveling, the passenger occupant PA can enjoy television and movies.

However, in the display device described in Patent Document 1, between the driver DR and the passenger occupant PA,
For example, from the rear center seat occupant, a video 59 in which a map image and a DVD image as shown in FIG. 23 are mixed is seen, and a person located between the driver DR and the passenger occupant PA is shown. Therefore, the DVD video 58 or the map video 57 cannot be displayed alone, and there is a problem that seat positions (directions) where a good display video can be enjoyed are limited.

On the other hand, as shown in FIG. 24, the following Patent Document 2 includes a liquid crystal display element 61 and a parallax barrier (slit array) 62, and each pixel 61 </ b> A of the liquid crystal display element 61.
An image display device is disclosed in which four observers A to D can observe different planar images when different image signals are input to .about.61D. By applying such a configuration of the image display device to the display device described in Patent Document 1, the above-described problem, that is, the problem that the seat position (direction) where the video can be enjoyed is limited is solved. Is possible.

On the other hand, when a single screen can display different images in multiple directions, and the number of seat positions where different images can be enjoyed increases, there are operations such as switching the images displayed in each direction. It becomes complicated.

In this regard, the image display device described in Patent Document 2 detects the direction of the observer operating the remote control device based on the signal from the remote control device,
Only the image portion viewed by the observer can be selected as a target image.

However, in the image display device described in Patent Document 2, even when the viewers B, C, and D try to view the same image, the viewers B, C, and D select the same image with the remote control device, respectively. An operation must be performed. For example, such an image display device is mounted on a vehicle, and the driver DR displays a map image of the navigation device, while the passenger seat occupant PA and the center seat occupant display a DVD image. In such a case, the passenger seat occupant PA and the center seat occupant have to individually switch to the DVD image, which causes a problem that the operation becomes complicated.

Further, in the display device described in Patent Document 1, a belt-like portion group 54 (one pixel row) in which a driver seat image is displayed, and a belt-like portion group 55 (one pixel row) in which a passenger seat image is displayed. Are controlled so as to alternate in the horizontal direction, and in the image display device described in Patent Document 2, the pixels 61A to 61D viewed by the observers A to D alternate in the horizontal direction. The display is controlled like this.

When different images are displayed in a plurality of directions on a single screen, it is also assumed that an image that does not hinder even if the resolution is low and an image that preferably has a higher resolution are displayed simultaneously. In the devices described in 1 and 2, since images projected in either direction are displayed at the same resolution, the display resolution of a specific image cannot be increased, which is somewhat unsatisfactory for the user. There is also a problem that video can be displayed only at a certain resolution.
JP 2003-137005 A Japanese Patent No. 3503925

Means for solving the problems and their effects

The present invention has been made in view of the above-described problem, and a display image for a predetermined direction among the plurality of viewing directions with respect to a display unit capable of displaying individual images for a plurality of viewing directions on the same screen. Can be automatically switched to the content and state desired by the user, and the individual images for a plurality of viewing directions can be displayed on the same screen. It is an object of the present invention to provide a display control apparatus and a display apparatus that can perform control for improving the visibility of any one of the videos.

In order to achieve the above object, a display control device (1) according to the present invention is a display control device for controlling a display unit capable of displaying individual images for a plurality of viewing directions on the same screen, and is a predetermined control device. Display control means for performing display video switching control for a predetermined direction of the plurality of viewing directions based on the display switching condition.

According to the display control device (1), since the display video in the predetermined direction is switched based on the display switching condition, the display switching condition desired by the user is set in advance, whereby the predetermined video The display image in the direction of the user can be switched to a state desired by the user, and the trouble of switching the display image in the predetermined direction can be saved or the visibility of each display image displayed in a different direction can be improved. Control can be realized.

Further, the display control device (2) according to the present invention comprises a switching direction determination means for determining which of the plurality of viewing directions the display video is switched in the display control device (1), Switching condition determining means for determining whether or not the display switching condition is related to the switching direction determined by the switching direction determining means, and the display control means includes the switching condition determining means, When it is determined that the display switching condition is related to the switching direction, control is performed to switch the display video for the predetermined direction to the same display video as the switching direction.

According to the display control device (2), when it is determined that the display switching condition is related to the switching direction, the display video for the predetermined direction is switched to the same display video as the switching direction. Since the control is performed, the same display image as the switching direction can always be displayed in the predetermined direction. Therefore, it is possible to save the user from the switching operation for the predetermined direction.

In the display control device (3) according to the present invention, in the display control device (1) or (2), the display unit includes a first screen, a second direction, and a second screen on one screen. Separate display means for projecting different images with respect to the three directions, and the display control means switches display images for the second and / or third directions based on the display switching condition. It is characterized by control.

According to the display control device (3), the display unit has a first direction (for example, the direction in which the driver exists) and a second direction (for example, a passenger in the passenger seat) on one screen. Direction)
Separate display means for projecting a different image with respect to a third direction (for example, the direction in which the center seat occupant is present) is provided, and the display control means performs the second display based on the display switching condition. And / or the display video switching control with respect to the third direction is performed.
And / or the display image in the third direction can be switched to a state desired by the user, and the trouble of switching the display image in the second and / or third direction can be saved or displayed in a different direction. Control for improving the visibility of each displayed video can be realized.

In the display control device (4) according to the present invention, in the display control device (3), the display switching condition is to display a display image with respect to the second and / or third direction, with respect to the first direction. It is characterized by the condition of switching to the same video as the video.

According to the display control device (4), the display switching condition is a condition that the display video in the second and / or third direction is switched to the same video as the display video in the first direction. When the display image for the first direction (for example, the direction in which the driver is present) is switched, the third direction (for example, the center seat) is interlocked with the switching of the display image for the first direction. The display image for the direction in which the occupant is present is also switched, and the person present in the third direction can always enjoy the same image as the person present in the first direction without performing a switching operation. it can.

Further, in the display control device (5) according to the present invention, in the display control device (3), the display switching condition is such that the display video in the third direction is the same as the display video in the second direction. It is characterized by the condition of switching.

According to the display control device (5), the display switching condition is a condition that the display video for the third direction is switched to the same video as the display video for the second direction. When the display image for the direction (for example, the direction in which the passenger on the passenger seat exists) is switched, the third direction (for example, the center seat occupant is present) in conjunction with the switching of the display image for the second direction. The display image with respect to (direction) is also switched, and a person who exists in the third direction can always enjoy the same image as a person who exists in the second direction without performing a switching operation.

The display control device (6) according to the present invention is characterized in that, in the display control device (3), the display switching condition is a condition that a display image for the second or third direction is not output. Yes.

According to the display control device (6), since the display switching condition is a condition that the display video for the second and / or third direction is not output, for example, the third direction (for example, the center) In the condition that the display image for the seat occupant is not output, the display image for the first direction (for example, the direction for the driver) and the second direction (for example, the passenger seat) The display image with respect to the direction in which the occupant is present can be reduced and the influence that the image becomes difficult to see (the influence of crosstalk) can be reduced, and the person existing in the first direction and the second It is possible to make a clearer image visible to a person who exists in the direction, and to improve the visibility when different images are displayed in two directions. In addition, when the display image for the second direction (for example, the direction in which the passenger on the passenger seat is present) is not output, the display image for the second direction is reflected on the window at night or the like. It is possible to prevent the driver from being dazzled.

In the display control device (7) according to the present invention, in the display control device (3), an image in which the display switching condition is set for the third direction is a display image for the third direction. It is the condition that it displays.

According to the display control device (7), the display switching condition is a condition that the video set for the third direction is displayed on the display video for the third direction. 3
Those who are present in the direction can always enjoy the video for the third direction even when the display video is switched in the first or second direction.

The display control device (8) according to the present invention is characterized in that in any one of the display control devices (1) to (3), a display switching condition setting means for setting the display switching condition is provided. It is said.

According to the display control apparatus (8), since the display switching condition setting means for setting the display switching condition is provided, the display switching condition can be appropriately set according to the situation,
The display image with respect to the predetermined direction can be switched to a state desired by the user.

The display device (1) according to the present invention includes a display unit capable of displaying individual images for a plurality of viewing directions on the same screen, and any one of the display control devices (1) to (8). It is characterized by being.

According to the display device (1), each control of the display control devices (1) to (8) is realized with respect to a display unit capable of displaying individual videos for a plurality of viewing directions on the same screen. Can
It can be set as the display apparatus which can acquire each effect of the said display control apparatus (1)-(8).

A display control device (9) according to the present invention is a display control device for controlling a display unit capable of displaying individual videos for a plurality of viewing directions on the same screen. Light transmissive area changing means for changing the light transmissive area with respect to the viewing direction is equipped, the light transmissive area changing means for each viewing direction by the light transmissive area changing means, and the display of the video to be displayed in each viewing direction It is characterized by comprising display control means for controlling the resolution in correspondence.

According to the display control device (9), the display control is performed by associating the change of the light transmission region with respect to each viewing direction by the light transmission region changing unit and the display resolution of the video displayed in each viewing direction. Therefore, for example, it is possible to perform control for adjusting and displaying the display resolution of the video displayed in each viewing direction in response to the change of the light transmitting region for each viewing direction by the light transmitting region changing unit. The video with an increased display resolution can be displayed in response to the change in the visual recognition area of each video, and the visibility of the video can be improved. Alternatively, in response to a change in the display resolution of the image displayed in each viewing direction, the light transmission region changing unit can perform control to change and display the light transmission region for each viewing direction. In response to the change in display resolution, the viewing area of each video can be expanded or narrowed, and the visibility of a predetermined video can be improved.

The display control apparatus (10) according to the present invention further comprises a video number detection means for detecting a change in the number of videos displayed on the display unit in the display control apparatus (9), wherein the display control means includes the video Based on the number of images detected by the number detection means, the light transmission area changing means controls the change of the light transmission area with respect to each viewing direction and the display resolution of the video to be displayed in each viewing direction. It is characterized by that.

According to the display control device (10), based on the number of images detected by the number-of-images detection unit, the light transmission region changing unit changes the light transmission region with respect to each viewing direction, and each viewing direction. Since the display control is performed in correspondence with the display resolution of the video to be displayed on the screen, the light transmission region for each viewing direction can be changed according to the number of videos displayed on the display unit. For example, when the number of images displayed on the display unit is one, the viewing area is set to 1
In other words, the light transmission area is changed by the light transmission area changing means so as not to be displayed separately. Further, when the number of images projected on the display unit is two, the light transmission region is changed by the light transmission region changing means so that the visual field region is divided into two. Furthermore, when the number of images displayed on the display unit is three or more, the light transmission region can be changed by the light transmission region changing means so as to separate the visual field region into three or more. Then, since control for adjusting the display resolution of the display image is performed in response to the change of the light transmission region by the light transmission region changing means, the smaller the number of images displayed on the display unit, the more the image is displayed. The display resolution can be increased and the visibility can be improved.

The display control device (11) according to the present invention further comprises video type discrimination means for discriminating a type of video displayed on the display unit in the display control device (9), wherein the display control means includes the video type. Based on the video type discriminated by the discriminating means, the change of the light transmitting area for each viewing direction by the light transmitting area changing means and the display resolution of the video displayed in each viewing direction are controlled in correspondence with each other. It is characterized by being.

According to the display control device (11), according to the type of video displayed on the display unit,
The light transmission area for each viewing direction can be controlled in association with the display resolution of the video displayed in each viewing direction. For example, the light transmission area corresponding to the type of video (video source) The control pattern is stored in advance, the type of each video is determined, and the light transmission area is changed according to the determined type of each video (for example, viewing of a video with a high priority set in advance) Control that expands the area). In addition, since the display resolution of the video is adjusted in accordance with the change of the light transmission area, for example, the display resolution of the video with the wide light transmission area can be increased, and the visibility of the video is also improved. be able to.

Further, the display control device (12) according to the present invention comprises a visual region change operation detecting means for detecting a visual region change operation for any of the images projected on the display unit in the display control device (9). The display control means, based on the change operation of the visual recognition area detected by the visual recognition area change operation detection means, change of the light transmission area for each viewing direction by the light transmission area change means, It is characterized in that it controls the display resolution of the video displayed in each viewing direction in correspondence.

According to the display control device (12), in accordance with a change operation of the viewing area for any image displayed on the display unit, the change of the light transmission area for each viewing direction, and the viewing direction. It is possible to control the display resolution of the video to be displayed in correspondence with each other. For example, a light transmission region change pattern when a viewing region change operation is detected is stored in advance, and the light transmission region is changed according to the viewing region change operation (for example, the viewing region). Control for expanding the visual recognition area of the video in which the change operation is detected) can be realized. In addition, since the display resolution of the video is adjusted in accordance with the change of the light transmission area, for example, the display resolution of the video with a wide viewing area can be increased, and the visibility of the video is also improved. Can do.

The display control device (13) according to the present invention further comprises operation detection means for detecting an operation on any of the images projected on the display unit in the display control device (9), wherein the display control means Based on the operation detected by the operation detecting means, the change of the light transmission area for each viewing direction by the light transmission area changing means is associated with the display resolution of the video displayed in each viewing direction. It is characterized by being controlled.

According to the display control device (13), in response to an operation on any of the images projected on the display unit, the light transmission region changing unit changes the light transmission region with respect to each viewing direction, and The display resolution of the video displayed in each viewing direction can be controlled in correspondence. For example, the light transmission region change pattern when an operation on the image is detected is stored in advance, and the light transmission region is changed in accordance with the operation on the image (
(For example, control that expands the viewing area of the image where an operation on the image is detected)
Can be realized. Further, since the display resolution of the video is adjusted in response to the change of the light transmission area by the light transmission area changing means, for example, the visual field area where the operation is detected is expanded and the display resolution is increased. And the visibility and operability can be improved.

Further, in the display control device (14) according to the present invention, in the display control devices (9) to (13), the light transmission region changing means is composed of a liquid crystal shutter, and a light shielding pattern of the liquid crystal shutter is stored. A light-shielding pattern storage unit, wherein the display control unit reads a light-shielding pattern corresponding to a light transmission region changing condition from the light-shielding pattern storage unit, and controls the liquid crystal shutter based on the light-shielding pattern. It is characterized by that.

According to the display control device (14), the display control means reads a light shielding pattern corresponding to a light transmission region change condition from the light shielding pattern storage means, and controls the liquid crystal shutter based on the light shielding pattern. Therefore, by controlling the liquid crystal shutter, the light transmission region for each video can be freely changed to a predetermined pattern, and various video displays can be realized.

Further, the display device (2) according to the present invention is configured to be able to display individual images for a plurality of viewing directions on the same screen, and includes a light transmission region changing means for changing a light transmission region for each viewing direction. It is characterized by including the display section provided and any of the display control devices (9) to (14).

According to the display device (2), it is configured to be able to display individual images for a plurality of viewing directions on the same screen, and includes a light transmission region changing means for changing a light transmission region for each viewing direction. A display device that can realize the controls of the display control devices (9) to (14) and obtain the effects of the display control devices (9) to (14) on the display unit. be able to.

Embodiments of a display control device and a display device according to the present invention will be described below with reference to the drawings. First, based on FIGS. 1 to 8, the display control device and the display device according to the present invention are provided.
The function of displaying individual videos for a plurality of viewing directions on the same screen will be described in detail. Here, a function for displaying individual images on the same screen in two directions (left and right directions) will be described. However, the display function is not a function limited to display in only two directions.
It is also possible to have a configuration in which individual videos are displayed in more than directions.

FIG. 1 is a diagram conceptually showing functions provided in a display device according to the present invention. The first image data D1 output from the first image source 101 and the second image data D2 output from the second image source 102 are input to the display control unit 103 and processed by the display control unit 103. The display data D3 is output to the display unit 104.

In the display device according to the present invention, the first display image 105 based on the first image data D1 is displayed so as to be visible in the direction of the viewer L located on the left side with respect to the display unit 104.
A second display image 106 based on the second image data D2 is displayed so as to be visible in the direction of the viewer R located on the right side of 04.

Thus, in the display device according to the present invention, the first display image 105 is displayed to the viewer L according to the relative position of the viewer with respect to the display unit 104, in other words, according to the viewing angle with respect to the display unit 104.
The second display image 106 can be simultaneously shown to the viewer R, and the display images 105 and 106 are displayed on the entire display screen of the display unit 104.

The first image source 101 is, for example, a movie image from a DVD player or a received image from a television receiver, and the second image source 102 is, for example, a map or a route guidance image from a car navigation device. The first image data D1 and the second image data
The image data D2 is supplied to the display control unit 103, and the display control unit 103 performs a process for displaying the image data on the display unit 104 substantially simultaneously.
With such a configuration, different information and contents can be presented to the left and right viewers L and R on one screen. Of course, if the first and second image sources 101 and 102 are the same, the left and right viewers L and R can also see the same image.

FIG. 2 is a perspective view showing a state in which the display device according to the present invention is mounted on a vehicle. The display unit 104 constituting the display device is disposed in the approximate center of the dashboard in front of the driver's seat 107 and the passenger seat 108, and various operations on the display device are performed on the liquid crystal panel 11 of the display unit 104.
The operation is performed by operating the touch panel 111 disposed on 0, the operation unit 112 disposed on the frame of the liquid crystal panel 110 of the display unit 104, or an infrared or wireless remote controller (not shown). It has become. In addition, a speaker 113 connected to a display device is disposed at each door of the vehicle so that sounds, warning sounds, and the like linked to the display image are output.

When it is assumed that the viewer R shown in FIG. 1 sits in the driver seat 107 in FIG. 2 and the viewer L shown in FIG. 1 sits in the passenger seat 108, the first viewing direction (driver seat direction) with respect to the display unit 104. ) Is an image such as a map from a car navigation device,
The image that can be viewed from the second viewing direction (passenger seat direction) at the same time can be, for example, a TV reception image, a DVD image, or the like. The viewer L at the seat 108 can enjoy television and DVD.

Moreover, since each image is displayed using, for example, the entire 7-inch screen, the screen size is not reduced as in the conventional multi-window display. In other words, the driver (
For viewers R) and passengers (viewers L), it is possible to present information and contents desired by the viewers L and R as if they had their own dedicated displays.

Next, the configuration of the display unit 104 of the display device according to the present invention will be described in detail. FIG.
(A) is the figure which showed typically the display state when the display part 104 of the display apparatus which concerns on this invention is seen from the front, (b) is the BB sectional drawing in (a).

The display unit 104 includes a liquid crystal panel 110 and a backlight 120.
The liquid crystal panel 110 includes a pair of substrates in which a liquid crystal layer 123 is sandwiched between a TFT (Thin Film Transistor) substrate 121 and a color filter substrate 122, a parallax barrier 124, and a glass substrate 125 on the backlight 120 side. The polarizing plate 126 is sandwiched between the disposed polarizing plate 126 and the polarizing plate 127 disposed on the front surface on the light emitting direction side. In addition, the liquid crystal panel 11
0 is arranged slightly separated from the backlight 120 and has pixels composed of RGB colors (three primary colors).

The liquid crystal panel 110, for example, lateral 800 pixels, vertical direction and 480 pixels liquid crystal panel is employed, each pixel of the liquid crystal panel 110 includes a pixel _{L P} for the left (passenger seat 108), the right (driver's seat 107) for being grouped into the pixel R _P in the vertical direction alternately are to be displayed control. That is, half of the total number of pixels in the horizontal direction of the liquid crystal panel 110 is the first display image 10.
In the display of 5, the remaining half of the pixels are used for displaying the second display image 106.

The parallax barriers 124 are provided at predetermined intervals in the horizontal direction (intervals where the light emission direction from each pixel can be regulated to either the right or left) and are formed in a vertical stripe pattern. The parallax barrier 124 blocks the left side (passenger seat) pixel L _P from being displayed on the right side (driver seat) and is visible from the left side (passenger seat), while the right side (driver seat) pixel. R _P is the left side (
The display on the passenger seat is cut off and visible from the right side (driver's seat). That is, when the liquid crystal panel 110 is viewed from the left side, the parallax barrier 124 covers and hides the right pixel R _P and the left pixel L _P is visible, while when the liquid crystal panel 110 is viewed from the right side, the parallax barrier 124 is the left pixel L _{P. P} is covered and the right pixel _RP is visible. In this case, when the liquid crystal panel 110 is viewed from near the front, a part of the left pixel L _{P and} a part of the right pixel R _P can be seen, so that the left and right display images appear to overlap. For such a parallax barrier 124, for example, the configurations disclosed in JP-A-10-123461 and JP-A-11-84131 can be applied.

In addition, if the display control for each pixel of the liquid crystal panel 110 and the arrangement configuration of the parallax barrier 124 are changed, different images can be displayed in three or more directions. Also, the parallax barrier 1
The viewing angle may be varied by configuring a liquid crystal shutter 24 that can be electrically driven.

Further, the left side pixel L _P and the right side pixel R _P arranged alternately in FIG. 3 have RGB colors, but each group has a single color in the vertical direction such as R column, G column, and B column. It may be configured, or may be configured as a row in which a plurality of RGB are mixed.

FIG. 4 is a circuit diagram showing a schematic configuration of the TFT substrate 121 constituting the display unit 107. T
The FT substrate 121 is connected to the scanning line driving circuit 131, the data line driving circuit 132, the scanning lines L _SCAN 1, 2, 3,... Connected to the scanning line driving circuit 131, and the data line driving circuit 132. The data lines L _DATA 1, 2, 3,... And the scanning lines L _SCAN 1, 2, 3,... And the area surrounded by the data lines L _DATA 1, 2, 3 _,. Each subpixel 133 is formed with a pixel electrode 134 that applies a voltage to the liquid crystal layer 123 and a TFT element 135 that controls the switching of the pixel electrode 134.

The scanning line driving circuit 131 and the data line driving circuit 132 are connected to a later-described display panel driving unit 234 that drives the liquid crystal panel 110. The display panel driving unit 234 includes the scanning line driving circuit 131 and the data line driving circuit 234. The drive timing of the circuit 132 is controlled. The scanning line driving circuit 131 performs selective scanning of the TFT element 135, and the data line driving circuit 132 is configured to control the voltage applied to the pixel electrode 134.

Each sub-pixel 133 has, for example, a data line L _DATA based on the synthesized data of the first image data D1 and the second image data D2, or the first and second individual image data D1, D2.
Driving the first pixel data (for left side) 1 and 3 and the second pixel data (for right side) to the data lines L _DATA 2 and 4 to form the first display image 105 Image data D1 group and second image data D2 group forming the second display image 106 are formed. When displaying different images in three directions, the first, second, and third image data groups may be formed by the same drive control as described above.

FIG. 5 is a block diagram schematically showing a main part of an AV (Audio Visual) navigation system employing the display device according to the present invention. However, component parts having the same functions as those described in FIGS.

The AV navigation system includes a CD / MD playback unit 201, a radio reception unit 202, a TV
Various sources including a receiving unit 203, a DVD reproducing unit 204, an HD (hard disk) reproducing unit 205, and a navigation unit 206 are provided.
_{201 to} SL ₂₀₆ are connected to the distribution circuit 212, respectively. An external audio / video input unit 207 is connected to the distribution circuit 212 via a signal line SL ₂₀₇ . A camera (for example, a rear monitoring camera) 208 is connected to the external audio / video input unit 207, but a video camera, a game machine (not shown), or the like can also be connected. In addition, a selector 209 is connected to the TV receiving unit 203, and a VICS information receiving unit 210 and a GPS information receiving unit 211 are connected to the navigation unit 206.

Distribution circuit 212 includes a voice adjusting circuit 213 via a signal line SL ₂₁₃ to SL _215, a first image adjusting circuit 214, is connected respectively to the second image adjusting circuit 215, the audio adjustment circuit 213 speaker 113 The first image adjustment circuit 214 and the second image adjustment circuit 215 are connected to the image output unit 216 via the signal lines SL ₂₁₆ and SL ₂₁₇ , and the image output unit 216 is connected via the signal line SL _218. The liquid crystal panel 110 of the display unit 104 is connected to the rear display unit 217 via a signal line SL ₂₁₉ .

The rear display unit 217 is provided for the rear seat of the vehicle, and the image output unit 216.
The same image as that displayed on the display unit 104, or one of the driver seat image and the passenger seat image can be displayed. The display unit 104 includes a backlight 120, a liquid crystal panel 110, and a touch panel 111, and an operation signal to the touch panel 111 is input to the control unit 200.

Further, brightness detection means (for example, a vehicle light switch or light sensor) 218, occupant detection means (for example, a pressure sensor) 219, a communication unit 220 having a wireless communication function, E
The TC vehicle-mounted device 221, the remote control transmission / reception unit 222, the operation unit 223, and the memory 224 are connected to the control unit 200.

Control unit 200, control lines _{CL 201 ~CL 207, CL 212 ~CL} 216, CL 120 and various sources 201-206 via a distribution circuit 212, various adjustment circuits 213 to 215, the image output unit 216, and a display unit 104 is connected to each part in the system, and is configured to control each part of the system in an integrated manner.

FIG. 6 is a block diagram illustrating a schematic configuration of the image output unit 216. The image output unit 216 includes a first writing circuit 231 connected to the first image adjustment circuit 214, and a second image adjustment. A second writing circuit 232 connected to the circuit 215, a VRAM 233, and the display panel driving unit 23
4.

For example, the first writing circuit 231 is based on the image data corresponding to the odd columns of the image among the adjusted image data, and the second writing circuit 232 is based on the image data corresponding to the even columns, Each is written in a corresponding area in the VRAM 233. The display panel driving unit 234 is a circuit for driving the liquid crystal panel 110, and based on the image data (the combined data of the first image data D1 and the second image data D2) stored in the VRAM 233, the liquid crystal panel 110 is driven. The corresponding pixels of the panel 110 are driven.

Note that since the image data is written in the VRAM 233 so as to correspond to the multi-view display image obtained by combining the first image data D1 and the second image data D2, one drive circuit is provided. The operation is the same as the operation of the driving circuit of a normal liquid crystal display device. As another form, the first display panel that drives the corresponding pixel of the liquid crystal panel 110 based on the respective image data without combining the first image data D1 and the second image data D2. It can also be set as the structure provided with a drive part and a 2nd display panel drive part.

FIG. 7 is a block diagram showing a schematic configuration of the memory 224. The memory 224 includes a first screen RAM 241 and a second screen RAM 242 to which image quality adjustment values of the first display image 105 and the second display image 106 set by the user can be written, and the first display image 10.
The image quality setting information storage means 243 in which a plurality of stages of adjustment values can be selected in advance for each image quality adjustment of the 5 and second display images 106, and the first display image 105 and the second display image for the surrounding environment And an environmental adjustment value holding unit 244 for holding the image quality adjustment state 106. The image quality setting information storage unit 243 and the environmental adjustment value holding unit 244 are configured by an electrically rewritable nonvolatile memory such as a flash memory or a battery-backed volatile memory.

FIG. 8 is a block diagram illustrating a schematic configuration of the control unit 200. The control unit 200 includes an interface 251 connected to each unit in the system, a CPU 252 that comprehensively controls each unit in the system, and a program storage unit (ROM) 253 in which various programs necessary for system operation are stored. And a data storage unit (RAM) 254 for storing various data. The ROM 253 and the RAM 254 may be built in the CPU 252 or provided externally, and the ROM 253 may be an electrically rewritable nonvolatile memory such as a flash memory.

The control unit 200 is configured to control the various sources 201 to 206 and the distribution circuit 212 on the basis of operation signals from the touch panel 111, the operation unit 223, the remote controller 225, or the like. The output of the source image data and audio data is controlled, and if the selected source image data and audio data is image data via the distribution circuit 212, the first image adjustment circuit 214 and the second image adjustment are performed. The circuit 215 is controlled to distribute the audio data to the audio adjustment circuit 213 respectively. The first and second image adjustment circuits 214 and 215 adjust the brightness, color tone, contrast, and the like of the image data based on the control signal from the control unit 200, and the adjusted image data is the image output unit 21.
6, the image output unit 216 performs processing for driving the liquid crystal panel 110 to display an image based on a control signal from the control unit 200. Further, the audio adjustment circuit 213 distributes the sound to each speaker based on the control signal from the control unit 200, the volume,
The sound and the like are adjusted, and the adjusted sound is output from the speaker. The control unit 200 also performs control to display an operation menu for controlling these various sources.

For example, when the HD playback unit 205 is selected, music data such as an MP3 file recorded on a hard disk (not shown), image data such as a JPEG file, map data for navigation, and the like are read out, and music data and the like are read out. A menu display and image data for selection are displayed on the display unit 104. The navigation unit 206 includes a map information storage unit (using a partial area of the hard disk) that stores map information used for navigation, and includes a VICS information reception unit 210 and a GPS information reception unit 211. A navigation image generated by using the information acquired through the display unit 104 can also be displayed on the display unit 104. The TV receiving unit 203 is configured to receive a desired analog TV broadcast wave or digital TV broadcast wave via the antenna 226 selected by the selector 209.

Further, the control unit 200 performs control to change the setting of the output image and sound based on the information detected by the brightness detection unit 218 and the occupant detection unit 219. In addition, the communication unit 220 and the ETC in-vehicle device 221 are connected to the control unit 200, and the control unit 20
0 controls the display unit 104 to display the charge information from the ETC on-board unit 221 or controls the communication unit 220 for wireless connection with a mobile phone or the like, and displays information related to the control on the display unit 104. The display is controlled. In addition, the control unit 200
Processing for storing various setting information such as image quality setting information, programs, and vehicle information in the memory 224 is also performed.

FIG. 9 is a block diagram schematically showing a main part of an AV (Audio Visual) navigation system including a display device employing the display control device according to the embodiment (1). (Audio Visual)-The display device employed in the navigation system has the function of displaying individual images for a plurality of viewing directions on the same screen, similar to those described with reference to FIGS. It is. The video in the present invention includes a still image and a moving image.

1 in the figure shows a display device mounted in the center of the instrument panel of the vehicle,
Various electronic devices (for example, navigation device 21, DVD playback device 22, TV receiver 23, etc.) mounted on the same vehicle are connected to display device 1 through control signal line L1 and video signal line L2. It is like that.

The navigation device 21 includes a map database (not shown), a GPS receiver, and the like. The map database, the GPS receiver, and the like are used to detect the current position of the vehicle, and a map image around the current position of the vehicle. Video signals such as are output.
Further, an audio device (not shown) is connected to the navigation device 21, and a video signal indicating an audio screen such as a CD playback screen or a music selection screen in the audio device is also output.

The DVD playback device 22 is configured to include a DVD reader, not shown, and outputs a read DVD video signal. The TV receiver 23 includes a tuner (not shown) and the like, and outputs a received TV broadcast video signal.

The display device 1 is configured to display a control unit 2 including a microcomputer and a video signal input from the various electronic devices via the video signal line L2 based on a control signal from the control unit 2. A video processing unit 3 that performs processing for synthesizing the video data, a video memory (VRAM) 4 that temporarily stores video data synthesized by the video processing unit 3, and a VRAM 4
The panel drive unit 5 for displaying the video data stored in the liquid crystal panel 6, the liquid crystal panel 6, and three directions (driver seat direction, center seat direction, passenger seat direction) disposed on the front surface of the liquid crystal panel 6 A separate display shutter 7 that enables the separate display of the video image and an operation unit 8 having various operation switches for giving an operation command to the above-mentioned various electronic devices or a video switching command displayed on the liquid crystal panel 6. It is configured to include.

FIG. 10 is a diagram (partial horizontal sectional view) schematically showing the structure of the liquid crystal panel 6 and the separate display shutter 7, and the separate display in which a plurality of openings (slits) 7 a are arranged on the front surface of the liquid crystal panel 6. By arranging the shutter 7, the pixel rows 6a to 6c that can be visually recognized through the slit 7a.
Are switched according to the viewing direction (A to C). In the present embodiment (1), the separation display shutter 7 is provided with one slit 7a for each of the three pixel columns 6a to 6c on the liquid crystal panel 6, and each of the pixel columns 6a to 6a. By inputting different video signals to 6c (that is, a driver seat video in pixel row 6a, a central seat video in pixel row 6b, and a passenger seat video in pixel row 6c), slits 7a are formed in the directions A to C. Pixels, that is, images seen through the driver DR, the driver DR present in the direction A visually recognizes the driver seat image, and the central seat occupant RE present in the direction B visually recognizes the central seat image. The passenger seat occupant PA existing in the direction C can visually recognize the passenger seat image.

Further, the display device 1 can set the display switching condition of the video signal (center seat video) input to the pixel row 6b through a setting screen (not shown). For example, the condition a: driver seat video and Linked (that is, if the driver seat image is switched, the center seat image is switched to the same image accordingly), condition b: interlocked with the passenger seat image (that is, the passenger seat image is switched) In this case, the central seat video is also switched to the same video), condition c: no video is output to the pixel row 6b (or a black image may be output instead of video) d: The condition desired by the user can be selected and set from the conditions such as displaying the video set for the central seat. The image for the center seat in the above condition d can be appropriately selected and set by the user through another setting screen (not shown).

When the control unit 2 detects the switching signal of the display video from the operation unit 8, the control unit 2 transmits the switching signal to various electronic devices via the control signal line L1, and the various electronic devices transmit the video based on the switching signal. Switching, video signal output control, and the like are executed.

Further, the control unit 2 determines which of the directions A to C the display signal is switched to, and the display switching condition set by the user is determined. When it is determined whether or not the display switching condition is related to the switching direction, and it is determined that the display switching condition is related to the switching direction (that is, when the condition a is set in the display switching condition) When the display image is switched in the direction A (driver's seat direction) or when the condition b is set in the display switching condition, the display image is switched in the direction C (passenger seat direction). Display image for the direction B (center seat direction) is displayed in the switching direction (A
Video processing unit 3 and panel drive unit 5 so as to switch to the same display video as the direction of C or C).
Control. On the other hand, when it is determined that the display switching condition is not related to the switching direction (that is, any one of the above conditions c and d is set as the display switching condition), the display switching condition The video processing unit 3 and the panel driving unit 5 are controlled so as to perform display according to the above.

Also, audio signals output from the navigation device 21, the DVD playback device 22, and the TV receiver 23 are output as audio via an amplifier and a speaker connected to an audio device (not shown).

Next, processing operations performed by the control unit 2 in the display device 1 employing the display control device according to the embodiment (1) will be described based on the flowchart shown in FIG. This processing operation
A separate display for allowing the driver DR to visually recognize the driver seat image, the central seat occupant RE to visually recognize the central seat image, and the passenger seat occupant PA to visually confirm the passenger seat image is provided through the operation unit 8. It is executed when instructed by the user.

First, in step S1, it is determined whether or not an operation for performing separate display has been performed. If it is determined that there has been no operation for performing separate display, the process is terminated, whereas if it is determined that there has been an operation for performing separate display, the process proceeds to step S2. .

In step S2, it is determined what the display switching condition for the center seat image is, and if it is determined that the display switching condition is condition a (that is, linked to the driver seat image), the process proceeds to step S3. In S3, a process of switching the center seat image and the driver seat image to the same image,
For example, if the driver's seat image is a map image of a navigation device, the center seat image is also switched to a map image (that is, a process of inputting a map image signal to the pixel rows 6a and 6b in FIG. 10), and thereafter Finish the process.

If it is determined in step S2 that the display switching condition is condition b (that is, linked to the passenger seat image), the process proceeds to step S4. In step S4, the center seat image and the passenger seat image are displayed. For example, if the passenger seat video is a DVD video, the central seat video is also switched to the DVD video (that is, the DVD video signal is input to the pixel columns 6b and 6c in FIG. 10). ) And then finish the process.

If it is determined in step S2 that the display switching condition is condition c (that is, the center seat image is not displayed), the process proceeds to step S5. In step S5, the center seat image is not output (that is, the center seat image is not displayed). , A process in which no video signal is input to the pixel row 6b in FIG. 10) is performed, and then the process ends.

If it is determined in step S2 that the display switching condition is condition d (that is, the video set for the central seat is displayed in the video for the central seat), the process proceeds to step S6. , A video set for the central seat is displayed as the video for the central seat. For example, if a TV video is set in advance as the video for the central seat, the TV video is displayed as the video for the central seat (ie, , A process of inputting a TV video signal to the pixel row 6b in FIG. 10, and then the process is finished.

Next, another processing operation performed by the control unit 2 in the display device 1 in which the display control device according to the embodiment (1) is adopted will be described based on the flowchart shown in FIG. This processing operation is executed after the processing shown in FIG. 11 (that is, in the case of separate display).

First, in step S11, it is determined which of the driver seat direction, the center seat direction, and the passenger seat direction the display image switching operation is performed, and it is determined that the display image switching operation is performed for the driver seat direction. If it does, it will progress to step S12.

In step S12, it is determined whether or not the display switching condition for the center seat video is the condition a described above. If it is determined that the display switching condition is the condition a, the process proceeds to step S13. In step S13, a process of switching the center seat image and the driver seat image to the same image is performed,
Then, the process is finished.

On the other hand, if it is determined in step S12 that the display switching condition is not condition a, the process proceeds to step S14. In step S14, a process of switching only the driver seat image is performed, and then the process ends.

If it is determined in step S11 that the display video switching operation for the passenger seat direction has been performed, the process proceeds to step S15. In step S15, it is determined whether or not the display switching condition is condition b described above. If it is determined that the display switching condition is condition b, the process proceeds to step S16. In step S16, a process of switching the center seat image and the passenger seat image to the same image is performed, and then the processing ends.

On the other hand, if it is determined in step S15 that the display switching condition is not condition b, the process proceeds to step S17. In step S17, a process of switching only the passenger seat image is performed, and then the process ends.

According to the display control apparatus according to the above embodiment (1), the display image switching control for the direction in which the center seat occupant RE is present is performed based on the preset display switching condition of the center seat image. The display image for the direction of the center seat occupant RE can be automatically switched to a state desired by the user, saving the trouble of switching the display image for the direction of the center seat occupant RE, or being displayed in a different direction. Control for improving the visibility of each display image can be realized.

In addition, as a display switching condition for the center seat video, when a condition is set that the display video for the direction of the center seat occupant RE is switched to the same video as the display video for the direction in which the driver DR exists, When the display image for the direction of the driver DR is switched, the display image for the direction of the center seat occupant RE is also switched in conjunction with the switching of the display image for the direction of the driver DR. Without any operation
You can always enjoy the same image as the driver DR.

Further, when the condition for switching the display image for the direction of the center seat occupant RE to the same image as the display image for the direction of the passenger seat occupant PA is set as the display switching condition for the center seat image, the passenger seat When the display image for the direction of the occupant PA is switched, the display image for the direction of the center seat occupant RE is also switched in conjunction with the switching of the display image for the direction of the passenger occupant PA. Therefore, the same image as that of the passenger occupant PA can be always enjoyed without switching operation.

In addition, when the display switching condition for the center seat image is set such that the display image for the direction of the center seat occupant RE is not output, the display image for the direction of the driver DR and the passenger seat occupant PA are displayed. The effect of crossing the display image with respect to the direction and making the image difficult to see (the effect of crosstalk) can be reduced, and the driver DR and the passenger seat passenger P
A clearer and better video can be seen with respect to A.

In addition, as a display switching condition for the center seat video, if the display video for the direction of the center seat occupant RE is set to display a video set for the central seat,
The center seat occupant RE can always enjoy the image set for the center seat even when the display image is switched in the direction of the driver DR or the passenger occupant PA.

In the embodiment (1), the case where the center seat video switching condition is set as the display switching condition has been described. However, in another embodiment, the passenger seat video switching condition or the center seat switching condition is set. A switching condition between the seat image and the passenger seat image may be set. For example, when there is no passenger in the passenger seat, it is possible to set a condition that no video is output in the direction of the passenger seat. Whether or not there is an occupant in the passenger seat can be determined based on, for example, a signal from a seating sensor or the like provided in the passenger seat.

According to such a configuration, when the condition that the display image for the direction of the passenger occupant PA is not output is set, the image for the passenger occupant is reflected on the window at night and the driver DR is dazzled. Can be prevented.

FIG. 13 is a block diagram schematically showing a main part of an AV / navigation system including a display device employing the display control device according to the embodiment (2). However, components having the same functions as those of the AV / navigation system shown in FIG.

In the figure, 1A shows a display device mounted in the center of the instrument panel of the vehicle, and various electronic devices mounted on the same vehicle via the control signal line L1 and the video signal line L2 are displayed on the display device 1A. Devices (for example, navigation device 21, DVD playback device 22, TV receiver 23, etc.) are connected.

In the display device 1A, a control unit 2A including a microcomputer, a video processing unit 3, a VRAM 4, a panel drive unit 5, a liquid crystal panel 6, and each video displayed on the liquid crystal panel 6 are independently visible. A liquid crystal shutter (light transmissive area changing means) 9 for changing a region where the light can be generated, that is, a light transmissive area for each viewing direction, and a memory 10 storing data relating to a light shielding pattern (shutter pattern) of the liquid crystal shutter 9 And a video memory (temporarily storing image data indicating the shutter pattern read from the memory 10)
(VRAM) 11, a shutter driving unit 12 that drives the liquid crystal shutter 9 to display image data indicating a shutter pattern stored in the VRAM 11, and an operation unit 8.

FIG. 14 is a diagram (partial horizontal sectional view) schematically showing the structure of the liquid crystal panel 6 and the liquid crystal shutter 9. The liquid crystal shutter 9 is disposed on the front surface of the liquid crystal panel 6, and by controlling whether or not to apply a voltage to each liquid crystal element 9 b constituting the liquid crystal shutter 9, the light transmission state of each liquid crystal element 9 b is changed. The slit 9a that can transmit light can be controlled to be formed at an arbitrary position. FIG. 14 shows an example of a shutter pattern in the case where separate display is performed in three directions A to C (driver's seat direction, central seat direction, and passenger seat direction).

Data relating to the shutter pattern (shape) for forming the slit 9a is stored in the memory 1
The control unit 2A reads the shutter pattern corresponding to the viewing area change command from the memory 10 and controls the driving of the liquid crystal shutter 9 based on the read shutter pattern. By controlling the liquid crystal shutter 9 to be driven in this way, it is possible to change the visual recognition area (the visible ratio) of the video that is separately displayed in different directions.

The drive control of the liquid crystal shutter 9 performed by the control unit 2A is, for example, 1) performed according to the number of images displayed on the liquid crystal panel 6, or 2) the type of image displayed on the liquid crystal panel 6 (
Depending on the state of combination of images to be displayed separately), 3) performed when the user changes the viewing area, or 4) operation on the image by the user (for example, navigation device) Menu operations, DVD chapter selection operations, etc.)
It can be carried out when there is. Further, it is possible to adopt a configuration in which the user can set the conditions for driving the liquid crystal shutter 9 through a setting screen (not shown).

In addition, the control unit 2A drives and controls the liquid crystal shutter 9 to perform variable control of the viewing area of each image displayed separately, and to adjust the display resolution of each image corresponding to the variable control of the viewing area. The viewing area is variably controlled by the liquid crystal shutter 9 in accordance with the control or the display resolution adjustment control of each image.

FIG. 15 is a diagram for explaining the drive control of the liquid crystal shutter 9 and the video output control to the liquid crystal panel 6 performed by the control unit 2A, which are performed according to the number of images projected on the liquid crystal panel 6. .

FIG. 15A shows a state in which a map image (NAVI) is displayed for the driver DR, the center seat occupant RE, and the passenger seat occupant PA (a state in which no separate display is performed). In this case, all the liquid crystal elements 9b of the liquid crystal shutter 9 are controlled to be in a transmissive state,
Each pixel line constituting the liquid crystal panel 6, only map image signals G _N are input, thereby making it possible to project a high definition map image.

FIG. 15B shows the driver DR visually viewing the map image, and the passenger seat passenger PA has the DVD.
This shows a state in which separate display for visually recognizing video (DVD) is being performed, and the liquid crystal shutter 9 is controlled by a shutter pattern that displays separately in the direction of the driver DR and the direction of the passenger occupant PA. whereas, each pixel line constituting the liquid crystal panel 6 so that the map image signals G _N and DVD image signals G _D are alternately input.

Further, FIG. 15 (c) shows that the driver DR visually recognizes the map image, the center seat occupant RE visually recognizes the TV image (TV), and the passenger seat occupant PA visually recognizes the DVD image. The liquid crystal shutter 9 is controlled by a shutter pattern that is displayed separately in the direction of the driver DR, the direction of the center seat occupant RE, and the direction of the passenger seat occupant PA. whereas, each pixel line constituting the liquid crystal panel 6, so that the map image signals G _N and the TV video signal G _T, and a DVD video signal G _D are alternately input.

FIG. 16 is a diagram for explaining the drive control of the liquid crystal shutter 9 and the video output control to the liquid crystal panel 6 performed by the control unit 2A, which are performed according to the type of video displayed on the liquid crystal panel 6. is there.

FIG. 16A shows a state in which a map image (NAVI) is displayed for the driver DR and the passenger seat passenger PA (a state in which no separate display is performed) (same as FIG. 15A). Status).
When a separate display for allowing the passenger occupant PA to visually recognize the DVD image is instructed by the user via the operation unit 8, the display state is switched to the display state illustrated in FIG.

Note that the priority order of the video for expanding the viewing area is set in advance, and in this case, the priority order is set in the order of DVD video, TV video, map video, and CD video (CD playback screen) (
DVD video has the highest priority). The user may be able to set through a predetermined setting screen.

In the case of FIG. 16B, the liquid crystal shutter 9 is controlled to a shutter pattern that widens the visual recognition area of the DVD video, while each pixel column constituting the liquid crystal panel 6 has a map video signal _GN.
DVD video signal G _D 1 and: is input at a ratio of 2, so that the adjustment to increase the display resolution of the DVD video is performed. Further, it is possible further enhance adjusting the proportion of the DVD image signals G _D.

When the reproduction of the DVD is finished and an operation for displaying the CD selection screen is performed, FIG.
The state of 6 (b) is switched to the state of FIG. 16 (c). In this case, the liquid crystal shutter 9
Is controlled by a shutter pattern that widens the viewing area of the map image, while the liquid crystal panel 6
Each pixel line constituting the map and the video signal G _N and CD image signals G _C is 2: is input at a ratio of 1, so that the adjustment to increase the display resolution of the map image is performed. Further, it is also possible adjustment to further increase the proportion of the map image signals G _N.

FIG. 17 illustrates the drive control of the liquid crystal shutter 9 performed by the control unit 2A and the control to the liquid crystal panel 6 that are performed when the user performs an operation of changing the viewing area or when an operation is performed on the display image. It is a figure for demonstrating video output control.

In FIG. 17A, the driver DR visually recognizes a map image, and the passenger seat passenger PA has a DVD.
This shows a state in which separate display for visually recognizing video (DVD) is being performed, and the liquid crystal shutter 9 is controlled by a shutter pattern that displays separately in the direction of the driver DR and the direction of the passenger occupant PA. whereas, each pixel line constituting the liquid crystal panel 6 so that the map image signals G _N and DVD image signals G _D are alternately input.

In the state shown in FIG. 17A, when an operation for changing the viewing area of the DVD video or an operation on the DVD video is detected, the display state is switched to that shown in FIG. That is, the liquid crystal shutter 9 is controlled to a shutter pattern visible region of the DVD image becomes wide, whereas, in each pixel line constituting the liquid crystal panel 6, and the map image signals G _N and DVD image signals G _D 1: 2 is input, and adjustment to increase the display resolution of the DVD video is performed.
In the case of an operation on a DVD image (chapter selection operation or the like), FIG.
It is also possible to control to return to the display state of 7 (a).

Next, the control unit 2 in the display device 1A in which the display control device according to the embodiment (2) is employed.
The processing operation performed by A will be described based on the flowchart shown in FIG. This processing operation is performed when an operation for switching the number of videos to be displayed separately is detected.

First, in step S21, it is determined whether or not an operation for switching the number of videos to be displayed separately is performed.
If it is determined that there has been no switching operation for the number of videos to be displayed separately, the process ends. If it is determined that there has been an operation for switching the number of videos to be displayed separately, the process proceeds to step S22.

In step S22, a process of determining the number of videos to be displayed separately is performed, and then step S2
Proceed to step 3. In step S23, a process for driving and controlling the liquid crystal shutter 9 so that a shutter pattern corresponding to the determined number of images is formed, that is, data indicating a shutter pattern corresponding to the determined number of images is read from the memory 10. The image data is written in the VRAM 11 and the shutter drive unit 12 is driven to output to the liquid crystal shutter 9, and then the process proceeds to step S24.

In step S24, video output control to the liquid crystal panel 6 according to the determined number of videos, that is, video data is synthesized according to the determined number of videos, written to the VRAM 4, and the panel drive unit 5 is driven. Then, the process of outputting to the liquid crystal panel 6 is performed, and then the process is finished.

Next, the control unit 2 in the display device 1A in which the display control device according to the embodiment (2) is employed.
Another processing operation performed by A will be described based on the flowchart shown in FIG. This processing operation is performed when an operation for separation display is detected.

First, in step S31, it is determined whether or not there has been a separate display operation (including an operation to switch to separate display or a video switching operation during separate display). If it is determined that there has been no separate display operation, the process ends. On the other hand, if it is determined that an operation for separation display has been performed, step S3 is performed.
Proceed to 2.

In step S32, the type of video displayed separately (for example, map video, DVD video, T
(V video or CD video) is determined, and then the process proceeds to step S33.
In step S33, the liquid crystal shutter 9 is controlled according to the determined video type. For example, when the driver seat video is a map video and the passenger seat video is a DVD video, a shutter pattern that expands the visual recognition area of the DVD video is stored in memory. 10 is read out, written into the VRAM 11, and output to the liquid crystal shutter 9. Thereafter, the process proceeds to step S34.

In step S34, video output control to the liquid crystal panel 6 according to the determined video type,
For example, when the driver's seat video is a map video and the passenger seat video is a DVD video, the DVD video signal input to the pixel row of the liquid crystal panel 6 is increased to increase the display resolution of the DVD video. The process to project is performed, and then the process ends.

Next, the control unit 2 in the display device 1A in which the display control device according to the embodiment (2) is employed.
Still another processing operation performed by A will be described based on the flowchart shown in FIG. Note that this processing operation is executed when an operation for changing the viewing area for any video is detected in the case of separate display.

First, in step S41, it is determined whether or not there has been an operation for changing the viewing area for any of the videos. If it is determined that there has been no operation for changing the viewing area, the process is terminated, while it is determined that there has been an operation for changing the viewing area. If it does, it will progress to step S42.

In step S42, the process which determines the image | video which had the change operation of the visual recognition area is performed, and it progresses to step S43 after that. In step S43, when the process for driving and controlling the liquid crystal shutter 9 to widen the visual recognition area of the determined video, for example, when the operation of changing the visual recognition area with respect to the driver's seat video is performed, the visual recognition area of the driver's seat video is set. The widening shutter pattern is read from the memory 10, written into the VRAM 11, and output to the liquid crystal shutter 9. Thereafter, the process proceeds to step S44.

In step S44, video output control to the liquid crystal panel 6 according to the determined video, for example, input to the pixel row of the liquid crystal panel 6 so as to correspond to a shutter pattern that widens the visual field area of the driver seat video. The ratio of the signal for the driver seat image is increased to display a video with an increased display resolution of the driver seat image, and then the processing ends.

According to the display control apparatus according to the above embodiment (2), the shutter pattern corresponding to the viewing area changing condition is read from the memory 10, and the display area viewing area is controlled by the liquid crystal shutter 9 based on the shutter pattern. Therefore, the viewing area of the displayed video can be freely changed to a predetermined pattern, and various video displays can be realized.
In addition, since display control is performed so that the variable control of the viewing area of the display image corresponds to the display resolution of the display image displayed on the liquid crystal panel 6, the display resolution is adjusted in accordance with the change of the viewing area of the display image. You can display the raised video, expand the viewing area of the predetermined video,
It is possible to narrow, and the visibility of a predetermined image can be improved.

Further, since the control for changing the viewing area of the display image and the adjustment control for the display resolution of the display image are performed in association with each other according to the number of images displayed on the liquid crystal panel 6, the number of images displayed on the liquid crystal panel 6 As the number is reduced, the resolution of the display image can be increased and the visibility can be improved.

In addition, since the control for changing the viewing area of the display image and the adjustment control of the display resolution of the display image are performed in association with each other according to the type of the image displayed on the liquid crystal panel 6, The display resolution can be increased and the visibility can be improved.

In addition, control for changing the viewing area of the display image and control for adjusting the display resolution of the display image are performed in association with a change operation of the viewing area for any image displayed on the liquid crystal panel 6. Therefore, it is possible to increase the display resolution of an image with a wide viewing area, and to improve the visibility.

In addition, since the control for changing the viewing area of the display image and the adjustment control for the display resolution of the display image are performed in association with each other in accordance with the operation on one of the images displayed on the liquid crystal panel 6, the operation is performed. The field of view of the detected video can be widened, the display resolution can be increased, and visibility and operability can be improved.

In the above embodiments (1) and (2), the display control device according to the present invention and the case where the display device is applied to an in-vehicle AV / navigation system have been described. However, the display control device according to the present invention is described. And a display apparatus is not limited to vehicle-mounted use, It can apply also for home use.

It is the figure which showed notionally the function with which the display apparatus which concerns on this invention is provided. It is the perspective view which showed the state with which the display apparatus which concerns on this invention was mounted in the vehicle. (A) is the figure which showed typically the display state when the display part of the display apparatus which concerns on this invention was seen from the front, (b) is the BB sectional drawing in (a). . It is a circuit diagram which shows schematic structure of the TFT substrate which comprises a display part. It is the block diagram which showed roughly the principal part of AV navigation system comprised including the display apparatus which concerns on this invention. It is the block diagram which showed schematic structure of the image output part. It is the block diagram which showed schematic structure of memory. It is the block diagram which showed schematic structure of the control part. It is the block diagram which showed roughly the principal part of AV / navigation system comprised including the display apparatus by which the display control apparatus which concerns on embodiment (1) of this invention was employ | adopted. It is the figure which showed typically the structure of the liquid crystal panel and display separation shutter which comprise a display apparatus. It is the flowchart which showed the processing operation which the control part performs in the display apparatus by which the display control apparatus which concerns on embodiment (1) was employ | adopted. It is the flowchart which showed another processing operation which the control part performs in the display apparatus by which the display control apparatus which concerns on embodiment (1) was employ | adopted. It is the block diagram which showed schematically the principal part of AV / navigation system comprised including the display apparatus by which the display control apparatus which concerns on embodiment (2) was employ | adopted. It is the figure which showed typically the structure of the liquid crystal panel and liquid-crystal shutter which comprise a display apparatus. (A)-(c) is a figure for demonstrating the drive control of the liquid-crystal shutter performed by the control part performed according to the image | video number projected on a liquid crystal panel, and the video output control to a liquid crystal panel. is there. (A)-(c) is a figure for demonstrating the drive control of the liquid-crystal shutter performed by the control part performed according to the classification of the image | video projected on a liquid crystal panel, and the video output control to a liquid crystal panel. It is. (A), (b) is a liquid crystal shutter drive control performed by the control unit when the user performs an operation for changing the viewing area or when an operation is performed on a display image; and a liquid crystal panel It is a figure for demonstrating video output control to. It is the flowchart which showed the processing operation which the control part performs in the display apparatus by which the display control apparatus which concerns on embodiment (2) was employ | adopted. It is the flowchart which showed another processing operation which the control part performs in the display apparatus by which the display control apparatus which concerns on embodiment (2) was employ | adopted. It is the flowchart which showed another process operation | movement which the control part performs in the display apparatus by which the display control apparatus which concerns on embodiment (2) was employ | adopted. It is the figure which showed typically the structure of the conventional display apparatus which implement | achieves a separated display. (A), (b) is the figure which showed an example displayed on the display part which comprises a display apparatus. It is the figure which showed an example displayed on the display part which comprises a display apparatus. It is the figure which showed typically the structure of another conventional display apparatus which implement | achieves a separated display.

Explanation of symbols

1, 1A Display device 2, 2A Control unit 3 Video processing unit 4 VRAM
5 Panel drive unit 6 Liquid crystal panel 7 Separate display shutter 8 Operation unit

Claims (16)

A display control device for controlling a display unit capable of displaying individual images for a plurality of viewing directions on the same screen,
A display control device comprising display control means for performing display video switching control for a predetermined direction of the plurality of viewing directions based on a predetermined display switching condition. Switching direction determination means for determining which of the plurality of viewing directions the display video is switched;
Switching condition determining means for determining whether or not the display switching condition is related to the switching direction determined by the switching direction determining means,
The display control means is
When the switching condition determining means determines that the display switching condition is related to the switching direction, control is performed to switch the display video for the predetermined direction to the same display video as the switching direction. 2. The display control apparatus according to claim 1, wherein The display unit is equipped with separate display means for projecting different images with respect to the first direction, the second direction, and the third direction on one screen.
3. The display according to claim 1, wherein the display control means performs display video switching control with respect to the second and / or third directions based on the display switching condition. Control device. The display control according to claim 3, wherein the display switching condition is a condition that the display video for the second and / or third direction is switched to the same video as the display video for the first direction. apparatus. The display control apparatus according to claim 3, wherein the display switching condition is a condition that the display video in the third direction is switched to the same video as the display video in the second direction. The display control apparatus according to claim 3, wherein the display switching condition is a condition that a display image for the second or third direction is not output. 4. The display control apparatus according to claim 3, wherein the display switching condition is a condition that an image set for the third direction is displayed on a display image for the third direction. The display control apparatus according to claim 1, further comprising a display switching condition setting unit configured to set the display switching condition. A display unit capable of displaying individual images for a plurality of viewing directions on the same screen;
A display device comprising the display control device according to claim 1. A display control device for controlling a display unit capable of displaying individual images for a plurality of viewing directions on the same screen,
The display unit is equipped with a light transmission region changing means for changing a light transmission region for each viewing direction,
Display comprising: display control means for controlling the change of the light transmission area for each viewing direction by the light transmission area changing means and the display resolution of the video displayed in each viewing direction in association with each other. Control device. Video number detection means for detecting a change in the number of videos projected on the display unit;
Based on the number of images detected by the number-of-images detection unit, the display control unit changes the light transmission region with respect to each viewing direction by the light transmission region changing unit, and the image to be displayed in each viewing direction. 2. The display resolution is controlled in correspondence with the display resolution.
The display control apparatus according to 0. Video type determining means for determining the type of video displayed on the display unit;
Based on the video type determined by the video type determination unit, the display control unit changes the light transmission region with respect to each viewing direction by the light transmission region changing unit, and the video to be displayed in each viewing direction. The display control apparatus according to claim 10, wherein the display control apparatus controls the display resolution in association with each other. A visual recognition area changing operation detecting means for detecting a visual recognition area changing operation for any image projected on the display unit;
The display control unit is configured to change the transmission region of light with respect to each viewing direction by the light transmission region changing unit based on the change operation of the viewing region detected by the viewing region change operation detection unit, and The display control apparatus according to claim 10, wherein the display control apparatus controls the display resolution of the video displayed in the direction in association with each other. Comprising an operation detecting means for detecting an operation on any of the images projected on the display unit;
Based on the operation detected by the operation detection unit, the display control unit changes the light transmission region with respect to each viewing direction by the light transmission region changing unit, and the display resolution of the video displayed in each viewing direction The display control apparatus according to claim 10, wherein the display control apparatus controls the display in correspondence with each other. The light transmission region changing means is composed of a liquid crystal shutter,
A light-shielding pattern storage means for storing the light-shielding pattern of the liquid crystal shutter;
The display control means reads out a light shielding pattern corresponding to a change condition of a light transmission region from the light shielding pattern storage means, and controls the liquid crystal shutter based on the light shielding pattern. The display control apparatus according to any one of 10 to 14. A display unit configured to be able to display individual images for a plurality of viewing directions on the same screen, and including a light transmission region changing means for changing a light transmission region for each viewing direction;
A display device comprising the display control device according to any one of claims 10 to 15.

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