WO2012046687A1

WO2012046687A1 - Image display apparatus capable of displaying three-dimensional image, and display control device for controlling display of image

Info

Publication number: WO2012046687A1
Application number: PCT/JP2011/072754
Authority: WO
Inventors: 辰雄渡辺; 健次前田
Original assignee: シャープ株式会社
Priority date: 2010-10-04
Filing date: 2011-10-03
Publication date: 2012-04-12
Also published as: JPWO2012046687A1; JP5529285B2

Abstract

To perform crosstalk processing without reducing the luminance and the contrast, the CPU (310) of a portable telephone (100) capable of displaying three-dimensional images includes: one-pixel buffers (910, 920); a parallax determination unit (930) that determines whether parallax exists based on image data for the left eye and image data for the right eye; a region determination unit (940) for determining the region of the image where parallax exists; a coefficient storage unit (950) that stores predetermined coefficients for each of the display regions of the portable telephone (100) for the crosstalk processing; and an image-processing unit (960). The image-processing unit (960) generates display data for the left eye and display data for the right eye by subtracting from the image data for the left eye a luminance based on the difference in the data for the left eye, and by subtracting from the image data for the right eye a luminance based on the difference in the data for the right eye, for pixels for which the difference between the image data for the left eye and the image data for the right eye is greater than a prescribed value.

Description

Image display apparatus capable of displaying a three-dimensional image, and display control device for controlling display of image

The present disclosure relates to an image display apparatus capable of displaying a three-dimensional image, and control of a display control device for controlling display of an image.

Some mobile phones, television receivers, monitor devices, and other image display terminals include terminals capable of displaying images in three dimensions. When an image is displayed in three dimensions, crosstalk may occur.

With regard to the improvement of crosstalk, for example, Japanese Patent Application Laid-Open No. 2000-004455 (Patent Document 1) can efficiently realize the image interlace required for a 3D stereoscopic display and simplifies the driving of the 3D stereoscopic display. Discloses a stereoscopic display controller that can be integrated (the [Summary] [Problem]).

In addition, Japanese Patent Application Laid-Open No. 2009-251098 (Patent Document 2) discloses a technique of "suppressing the generation of a double image due to crosstalk" ([Problem of [Summary]).

Japanese Patent Laid-Open No. 2000-004455 JP, 2009-251098, A

However, the techniques disclosed in all patent documents perform processing to suppress crosstalk for all pixels. Therefore, the contrast and the brightness of the image may be reduced.

Therefore, it is required that crosstalk be suppressed without lowering the contrast and the brightness of the image. In another aspect, it is required that crosstalk be suppressed in the display device without reducing the contrast and the brightness of the image.

An image display apparatus according to an embodiment includes a display device capable of three-dimensional display, a memory for holding left-eye image data, right-eye image data, left-eye image data, and right-eye image data. For generating data for displaying an image based on a parallax determination unit configured to specify a parallax portion based on a difference between the image data and the left-eye image data and the right-eye image data And an image processor. The image processor is configured to generate display data for the left eye and display data for the right eye by performing crosstalk correction processing on the identified parallax portion.

Preferably, the image processor is configured to generate display data for the left eye and display data for the right eye for pixels whose difference between the image data for the left eye and the image data for the right eye is larger than a predetermined value. It is done.

Preferably, the image processor generates display data for the left eye by subtracting the luminance based on the left eye difference from the image data for the left eye, and subtracts the luminance based on the difference for the right eye from the image data for the right eye Are configured to generate display data for the right eye.

Preferably, the image processor generates display data for the left eye by adding a predetermined luminance for the left eye to display data for the left eye, and generates predetermined luminance for the right eye as display data for the right eye. It is comprised so that the display data for right eyes may be produced | generated by adding.

Preferably, the memory is configured to store a predetermined correction coefficient for each of a plurality of sub-regions constituting the display region of the display device. The image processor is configured to generate display data for the left eye and display data for the right eye for each sub region by correcting the luminance using the correction coefficient.

Preferably, the image processor is configured to generate display data for the left eye and display data for the right eye, using coefficients defined for each of the R component, the G component, and the B component of the image.

According to another embodiment, a display control device is provided that is connected to a display capable of displaying a three-dimensional image by forming a parallax barrier to control display of the image by the display. The display device includes a liquid crystal display device, a backlight for supplying light to the liquid crystal display device, and forming means for forming a parallax barrier. The display control device includes a communication circuit configured to communicate control signals with the display device, a memory for holding image data for the left eye, and image data for the right eye, and an image for the left eye Data for displaying an image based on a parallax determination unit configured to specify a parallax portion based on a difference between data and image data for right eye, and image data for left eye and image data for right eye And an image processor configured to generate The image processor is configured to generate display data for the left eye and display data for the right eye by performing crosstalk correction processing on the identified parallax portion.

According to the image display terminal according to the certain aspect, the crosstalk is suppressed without reducing the contrast and the luminance of the image.

The above and other objects, features, aspects and advantages of the present invention will become apparent from the following detailed description of the present invention taken in conjunction with the accompanying drawings.

FIG. 2 is a front view of the mobile phone 100. It is a figure showing the state where cellular phone 100 was folded. FIG. 2 is a block diagram showing a hardware configuration of mobile phone 100. It is a figure for demonstrating crosstalk. It is a figure showing composition of a plurality of sub fields in display 150. In the example of FIG. FIG. 6 is a diagram showing an arrangement of a liquid crystal panel 610 and a parallax barrier 620 which constitute a display 150. It is a figure showing arrangement of a pixel of vertical 3D (three-dimensional) liquid crystal type. It is a figure for demonstrating the drawing direction in vertical 3D liquid crystal. It is a figure showing the function realized by CPU310. It is a figure showing the composition of the pixel at the time of putting the portrait display 150 horizontally. It is a figure showing the direction of drawing in the horizontal 3D liquid crystal, and the direction of crosstalk processing. It is a figure showing the composition of CPU310 contained in cellular phone 100 which has horizontal 3D liquid crystal. FIG. 16 is a diagram illustrating an image reproduction device 1900 and a three-dimensional display device 190.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same components are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description about them will not be repeated.

Although mobile phone 100 is exemplified in the present embodiment, application of the technical idea according to the present invention is not limited to this. Other portable communication terminals, for example, PDAs, electronic dictionaries and other information processing terminals, or television receivers, monitor devices and other image display devices, at least capable of three-dimensional display using a parallax barrier method The technical idea according to the present invention can be applied to any device having a display device.

In another aspect, the present invention can also be applied to an apparatus that does not include a display apparatus and that outputs an image, such as a hard disk recording and reproducing apparatus and a Blu-ray disc recording and reproducing apparatus. In this case, the technical idea according to the present invention is applied by a combination of the device and an external display device (for example, a television capable of three-dimensional display using a parallax barrier) connected to the device. In this case, when transmitting the video signal to the external display device, the device also transmits a signal for controlling formation of a parallax barrier of the external display device. In this case, the technical concept is specifically realized, for example, as an image display control circuit. Alternatively, in another aspect, a processor included in the device is realized as cooperation between hardware and software by executing a control program.

Referring to FIG. 1, mobile phone 100 includes

housings

110 and 120 and a biaxial hinge 130. The biaxial hinge 130 is configured to move the housing 110 with respect to the housing 120 in two axial directions. One of the two axes is for opening and closing the housing 110 and the housing 120, and the other one is for the housing 110 with respect to the housing 120 around the longitudinal rotation axis. It is a hinge for rotating.

The mobile telephone 100 further includes a speaker 140, a touch panel display 150, a plurality of buttons 160, and a microphone 170. The speaker 140 is attached to the housing 110. The touch panel display 150 is attached to the housing 110. The display 150 is a liquid crystal type, an organic electro luminescence (EL) type, or another display device. When the cellular phone 100 is in the open state (also referred to as a “first state”), the display 150 is moved by the biaxial hinge 130 in the same direction and direction as the side on which the plurality of buttons 160 are arranged. It is configured to face either.

The plurality of buttons 160 are configured as switches that receive input of commands to the mobile phone 100. In one aspect, the button 160 is implemented as a physical key, but in another aspect, some or all of the plurality of buttons 160 may be implemented as a software key.

Referring to FIG. 2, mobile phone 100 according to the present embodiment is also configured to face display 150 to the outside of mobile phone 100 when folded. That is, the housing 110 is rotated by 180 ° in the longitudinal direction with respect to the biaxial hinge 130 in the state shown in FIG. Further, the housing 110 is rotated about another one axis of the biaxial hinge 130. Thereafter, the case 110 and the case 120 are closed. Then, as shown in FIG. 2, the display 150 appears on the outside of the mobile phone 100 and the button 160 is hidden on the inside.

In the present embodiment, mobile phone 100 is a foldable type, but in another aspect, it is a slide type configured such that one housing slides relative to the other housing, It is also good. In yet another aspect, a tablet type or straight type terminal device may be applied.

The hardware configuration of mobile phone 100 according to the present embodiment will be described with reference to FIG. FIG. 3 is a block diagram showing a hardware configuration of mobile phone 100. Referring to FIG. In addition to the configuration shown in FIG. 1, the mobile phone 100 includes a communication device 302, a tuner 304,

antennas

306 and 308, a CPU (Central Processing Unit) 310, a positioning processing unit 312, and a positioning signal reception front end. The unit 314, GPS (Global Positioning System) antenna 316, camera 320, flash memory 344, RAM (Random Access Memory) 346, ROM (Read Only Memory) 348, audio signal processing circuit 370, LED ( A light emitting diode 376, a memory card drive device 380, a data communication I / F (interface) 378, and a vibrator 384 are provided. A memory card 382 may be attached to the memory card drive 380.

The antenna 306 receives the one-segment broadcast wave. The tuner 304 selects a program in accordance with an instruction of the CPU 310, and transmits a video signal and an audio signal to the CPU 310.

The signal received by the antenna 308 is subjected to front end processing by the communication device 302, and then the processed signal is sent to the CPU 310. CPU 310 executes processing for controlling the operation of mobile phone 100 based on an instruction given to mobile phone 100. The CPU 310 executes predetermined processing based on the signal sent from the communication device 302, and sends the processed signal to the audio signal processing circuit 370. The audio signal processing circuit 370 performs predetermined signal processing on the signal, and sends the processed signal to the speaker 140. The speaker 140 outputs sound based on the signal.

Microphone 170 receives an utterance to mobile phone 100, and sends a signal corresponding to the voice uttered to audio signal processing circuit 370. The voice signal processing circuit 370 executes predetermined processing for a call based on the signal, and sends out the processed signal to the CPU 310. The CPU 310 converts the signal into data for transmission, and sends the converted data to the communication device 302. The communication device 302 uses the data to generate a signal for transmission, and sends the signal to the antenna 308.

The flash memory 344 stores data sent from the CPU 310. The CPU 310 also reads data stored in the flash memory 344 and executes a predetermined process using the data.

The RAM 346 temporarily holds data generated by the CPU 310 based on an operation performed on the button 160. The ROM 348 stores a program or data for causing the mobile telephone 100 to execute a predetermined operation. The CPU 310 reads the program or data from the ROM 348 and controls the operation of the mobile phone 100.

The memory card drive device 380 reads out the data stored in the memory card 382 and sends it to the CPU 310. Conversely, the memory card drive device 380 writes the data output by the CPU 310 into the free space of the memory card 382.

The audio signal processing circuit 370 performs signal processing for a call as described above. In the example shown in FIG. 3, the CPU 310 and the audio signal processing circuit 370 are shown as separate components, but in another aspect, even if the CPU 310 and the audio signal processing circuit 370 are integrally configured. Good.

The display 150 is a touch panel display, but the mechanism of the touch panel is not particularly limited. The display 150 displays an image defined by the data based on the data acquired from the CPU 310. For example, the still image, the moving image, and the attribute of the music file (the name of the file, the player, the playing time, etc.) stored in the flash memory 344 are displayed.

The LED 376 implements a predetermined light emission operation based on a signal from the CPU 310. The data communication I / F 378 receives the attachment of a data communication cable. The data communication I / F 378 sends a signal output from the CPU 310 to the cable. Alternatively, the data communication I / F 378 transmits data received via the cable to the CPU 310.

The vibrator 384 performs an oscillating operation at a predetermined frequency based on a signal output from the CPU 310.

The GPS antenna 316 receives a signal emitted from a GPS satellite and sends the received signal to the positioning signal reception front end unit 314. The positioning signal reception front end unit 314 performs pattern matching based on each signal received from at least three (preferably four or more) GSP satellites, and the code pattern included in each signal and the code held by the portable telephone 100 If the pattern matches, the signal is sent to the positioning processing unit 312.

The positioning processing unit 312 uses the signal to execute positioning processing, and calculates the position of the mobile phone 100 that has received the signal. The CPU 310 displays the calculation result on the display 150.

In one aspect, as an image processing unit, the CPU 310 performs crosstalk correction processing on the specified parallax portion to generate display data for the left eye and display data for the right eye.

In another aspect, as an image processing unit, the CPU 310 displays left-eye display data and right-eye display data for pixels whose difference between the left-eye image data and the right-eye image data is larger than a predetermined value. Generate Here, the predetermined value refers to, for example, a value that is determined to generate parallax and to require crosstalk processing. Although this value differs depending on the display device, for example, if the difference between adjacent data is 50 or more, it may be determined that there is parallax.

In another aspect, the CPU 310 generates display data for the left eye by subtracting luminance based on the difference for the left eye from image data for the left eye as an image processing unit, and generates difference data for the right eye from the image data for the right eye The display data for the right eye is generated by subtracting the luminance based on.

In another aspect, as an image processing unit, the CPU 310 generates display data for the left eye by adding luminance predetermined for the left eye to display data for the left eye, and generates predetermined luminance for the right eye. The display data for the right eye is generated by adding to the display data for the right eye. Here, the luminance predetermined for the left eye and the luminance predetermined for the right eye are, for example, luminances determined by the crosstalk amount. For example, when the amount of crosstalk is 1%, by adding 1% of luminance, crosstalk processing can be performed even in a region where an image for low gradation is displayed.

In another aspect, flash memory 344 is configured to store a predetermined correction coefficient for each of the plurality of sub-regions that configure the display region of the display device. As an image processing unit, the CPU 310 corrects the luminance using a correction coefficient to generate display data for the left eye and display data for the right eye for each sub region. Here, the predetermined correction coefficient is, for example, a coefficient obtained by the crosstalk amount. For example, when the crosstalk amount is 1%, the luminance is corrected by using the coefficient corresponding to the luminance of 1%, so that the luminance to be originally output can be obtained.

As an image processing unit, the CPU 310 generates display data for the left eye and display data for the right eye using coefficients determined for each of the R component, the G component, and the B component of the image. Here, the predetermined coefficient is a coefficient obtained by the crosstalk amount. For example, when the crosstalk amount is 1%, the leakage crosstalk is offset by setting the coefficient to 1%, which is the luminance to be originally output.

The crosstalk according to the present embodiment will be described with reference to FIG. A state 401 is a diagram for explaining crosstalk in data for the right eye. A state 402 is a diagram for explaining crosstalk in data for the left eye.

As shown in state 401, data for the right eye is used to form

regions

400, 410, 430, and 420. Similarly, as shown in state 401, when the data for the left eye is used, for example,

regions

450, 460, 470, 480 are generated.

In the 3D image display apparatus using the parallax barrier method, by displaying an image in which data for left eye and data for right eye are alternately arranged in a comb shape, only data for left eye is for left eye, and right eye is for right eye Only the data for is visually recognized, and the user recognizes the 3D stereoscopic image. When the data for the right eye and the data for the left eye are alternately arranged in a comb shape, the area 400 and the area 450 become an image arranged adjacent to each other, and the difference between adjacent data becomes a large area. Similarly, the region 420 and the region 470 become images arranged adjacent to each other, and the difference between adjacent data becomes large. If the difference between the data in the areas 400 and 450 and the

areas

420 and 470 is larger than a predetermined difference, crosstalk occurs.

FIG. 5 shows a configuration of a plurality of areas in display 150. Referring to FIG. The display 150 includes a plurality of pixels as described above, and the plurality of pixels form an area for displaying an image. For example, in display 150, regions 510 to 560 are formed in the horizontal direction. Here, the regions 550 to 560 are respectively shown conceptually, and it is not intended that a specific pixel corresponds to a specific region.

In such a case, for example, considering the virtual center line 570 of the display 150, the areas 510 to 530 to the left of the center line 570 are each affected by the pixels that make up the area to the left of the area. On the other hand, the areas 540 to 560 located to the right of the center line 570 are affected by crosstalk by the pixels constituting the area located to the right of the area.

The crosstalk in the left region and the crosstalk in the right region will be further described with reference to FIG. FIG. 6 is a diagram showing the arrangement of the liquid crystal panel 610 and the parallax barrier 620 which constitute the display 150. As shown in FIG. Among these, the state 601 represents a mode in which the user of the mobile phone 100 looks at the left side of the display 150. State 602 represents the manner in which the user of mobile phone 100 looks to the right of display 150.

As shown in the state 601, when the user at the position 630 views the image displayed by the liquid crystal panel 610 via the parallax barrier 620, for example, even when the image of the area 612 is viewed, The image by is recognized. Similarly, in addition to the image of the area 614, an image by the pixels of the area 613 is viewed by the user at the position 630. In this case, due to the difference in the inclination of the line of sight with respect to the liquid crystal panel 610, the crosstalk amount from the area 613 when the area 614 is viewed becomes larger than the crosstalk amount from the area 611 when the area 612 is viewed. . Thus, for pixels on the left side of the display device, the coefficients for correcting crosstalk for the left region are made larger than the coefficients for correcting crosstalk for the region to the right of the region, The influence from the adjacent area can be appropriately suppressed.

Here, if the user is at the position 640, the crossing angle at which the line of sight makes with the liquid crystal panel 610 is different. The crossing angle is larger than the crossing angle at the position 630. Alternatively, even when the user is farther than the position 630, the crossing angle is larger than the crossing angles a and b at the position 630. In such a case, the influence from the area on the left is reduced. Therefore, as a coefficient for correcting the crosstalk, the distance between the user and the mobile phone 100 may be measured, and the coefficient may be changed according to the distance. In this case, a distance measuring sensor is used to measure the distance. For example, when the camera 320 is disposed on the surface on which the display 150 is disposed, the user is photographed using the camera 320, and a feature amount obtained from the photographing result and an image photographed at a standard distance in advance The distance at that time may be calculated by comparing with the feature quantity obtained from.

Conversely, as shown in state 602, when the user at position 650 views the image displayed by the liquid crystal panel 610 through the parallax barrier 620, for example when looking at the image of the area 615, it is on the right An image by the pixels of the area 616 is recognized. Similarly, in addition to the image of the region 617, an image by the pixels of the region 618 to the right is viewed by the user at the position 650. In this case, due to the difference in the inclination of the line of sight with respect to the liquid crystal panel 610, the crosstalk amount from the region 618 when the region 617 is viewed becomes larger than the crosstalk amount from the region 616 when the region 615 is viewed. . Thus, for pixels on the right side of the display device, the coefficients for correcting crosstalk for the right area are made larger than the coefficients for correcting crosstalk for the area to the left of the area, The influence from the adjacent area can be appropriately suppressed.

FIG. 7 is a diagram showing the arrangement of pixels of the vertical 3D liquid crystal type. The display 150 has a plurality of pixels for each of R, G, and B. Here, as shown in FIG. 7, one set of RGB is set as

lines

710, 720, 730, and 740. In this case, for example, for the pixel included in line 720, the component of pixel 711 in line 710 adjacent to the left (ie, the pixel corresponding to the B component) and the R component of pixel 731 in line 730 adjacent to the right. Will be affected. Therefore, by performing the crosstalk process using the coefficients determined for each of the R component, the G component, and the B component of the image, the influence from the adjacent pixels can be appropriately suppressed.

The directions of drawing and crosstalk processing in the present embodiment will be described with reference to FIG. FIG. 8 is a diagram showing each direction in the vertical 3D liquid crystal. The display 150 renders as the

directions

810, 811, 812 when drawing an image. That is, first, the scanning is performed from the left to the right, and after the scanning, the scanning is moved to the next line and the drawing processing is performed in the same direction. In this case, according to the present embodiment, the process of crosstalk is performed along the direction 820. That is, crosstalk processing is performed in the same direction as the drawing direction 810 along the horizontal direction.

Moreover, according to the mobile phone 100 according to the present embodiment, crosstalk processing is performed on data for 3D display. That is, in the case of the vertical 3D liquid crystal type, since the direction of screen drawing matches the direction of crosstalk processing, it is determined where crosstalk is noticeable (a location where the difference between adjacent data is large) can do.

The configuration of mobile phone 100 according to the present embodiment will be further described with reference to FIG. FIG. 9 is a diagram showing the configuration of the CPU 310 in detail. CPU 310 includes one-

pixel buffers

910 and 920, a parallax determination unit 930, an area determination unit 940, a coefficient holding unit 950, and an image processing unit 960. The one-pixel buffer 910 and the parallax determination unit 930 are connected to the RAM 346. An output of the one-pixel buffer 910 is connected to an input of the one-pixel buffer 920, an input of the disparity determination unit 930, and an input of the image processing unit 960. An output of the one-pixel buffer 920 is connected to an input of the disparity determination unit 930 and an input of the image processing unit 960.

The input of the disparity determination unit 930 is connected to the output of the RAM 346, the output of the one-pixel buffer 910, and the output of the one-pixel buffer 920. An output of the parallax determination unit 930 is connected to an input of the image processing unit 960. The output of the image processing unit 960 is connected to the display 150.

The one-

pixel buffers

910 and 920 each hold data for one pixel among the image data stored in the RAM 346. The parallax determination unit 930 determines the parallax based on the image data for the left eye and the image data for the right eye based on each data stored in the one-

pixel buffer

910 or 920 and the data read from the RAM 346. Determine if it exists.

The image processing unit 960 generates data for displaying an image based on the image data for the left eye and the image data for the right eye. More specifically, the image processing unit 960 sets the difference between the image data for the left eye and the data for the left eye to the pixel whose difference between the image data for the left eye and the image data for the right eye is larger than a predetermined value. The display data for the left eye and the display data for the right eye are respectively generated by subtracting the luminance based on the difference and further subtracting the luminance based on the difference of the data for the right eye from the image data for the right eye.

For example, the image processing unit 960 performs the crosstalk process using the following equation.
Image data for left eye = (L + G-R * X%) + R * X%
Image data for right eye = (R + G-L * X%) + L * X%
Here, L and R represent the luminance that should be originally output in the relevant area.
The + R * X% term and the + L * X% term represent the luminance leaking from the adjacent area.
The term "-R * X%" and the term "-L * X%" indicate the leak amount to be subtracted in advance. The term + G represents a luminance value to be added to enable crosstalk processing even in the case where the leakage amount to be subtracted is larger than the luminance to be originally output, in a region where an image for low gradation is displayed.

In another aspect, the image processing unit 960 generates display data for the left eye by adding a predetermined luminance for the left eye to the display data for the left eye. Similarly, the image processing unit 960 generates display data for the right eye by adding luminance predetermined for the right eye to the display data for the right eye.

Area determination unit 940 determines, based on the image data stored in RAM 346 and the data representing the use of display 150, whether the area requires processing for suppressing crosstalk. For example, the area determination unit 940 detects in which area of the screen the parallax is present. This detection is performed based on, for example, the difference between the data for the left eye and the data for the right eye.

The coefficient holding unit 950 has a predetermined coefficient for each of a plurality of areas constituting the display area of the display 150. This coefficient is predetermined to calculate the luminance to be considered in order to suppress the crosstalk when the crosstalk is noticeable. This coefficient is a luminance obtained by the crosstalk amount in a certain phase, and is an area for displaying an image for low gradation, for example, by adding 1% luminance when the crosstalk amount is 1%. Even cross talk processing can be performed.

The crosstalk processing in the horizontal 3D liquid crystal will be described with reference to FIG. FIG. 10 is a diagram showing the configuration of pixels when the vertically long display 150 is placed horizontally.

As shown in FIG. 10, the display 150 includes a plurality of pixel lines. In this case, each of the

lines

1010, 1020, 1030, and 1040 is the same as the component of the adjacent line for the R component, the G component, and the B component. Therefore, when the crosstalk process is performed, the process as described above may be performed on each of the R component, the G component, and the B component.

The direction of drawing and the direction of crosstalk processing in the horizontal 3D liquid crystal will be described with reference to FIG. FIG. 11 is a diagram showing these directions in the display 150. As shown in FIG. The drawing direction is, for example, as in the

directions

1110, 1120, and 1130. At this time, crosstalk processing is performed along the direction 1140.

In the case where the display 150 is a horizontal 3D liquid crystal type, the direction of screen drawing and the direction of crosstalk processing are different, so it is sufficient to have a buffer for two lines in order to refer to data in adjacent places.

The configuration of mobile phone 100 according to the present embodiment will be further described with reference to FIG. FIG. 12 is a diagram representing a configuration of CPU 310 included in mobile phone 100 having horizontal 3D liquid crystal. The CPU 310 includes one line buffers 1210 and 1220, a parallax determination unit 930, an area determination unit 940, a coefficient holding unit 950, and an image processing unit 960. The inputs of the one-

line buffers

1210 and 1220 are connected to the RAM 346. The input of the disparity determination unit 930 is connected to the outputs of the RAM 346 and the one-

line buffers

1210 and 1220. The output of the area determination unit 940 is connected to the input of the coefficient holding unit 950. The image processing unit 960 is based on the data read from the RAM 346, the outputs from the one-

line buffers

1210 and 1220, the output from the parallax determination unit 930, and the output from the coefficient holding unit 950. Use it to perform crosstalk processing.

<Modification>
Next, modifications of the above embodiment will be described. As described above, application of the technical concept according to the present embodiment is not limited to mobile phones and other terminals. That is, in the above embodiment, a control device (CPU 310) for controlling switching between two-dimensional display and three-dimensional display, and a display device capable of displaying a three-dimensional image by forming a parallax barrier (display 150 And is included in one device (mobile phone 100). However, the control device and the display device may be included in separate devices.

Therefore, with reference to FIG. 13, an image reproduction apparatus 1900 according to a modification of the present embodiment will be described. FIG. 13 is a diagram showing an image reproduction device 1900 and a three-dimensional display device 190. The image reproduction apparatus 1900 is realized, for example, as a DVD (Digital Versatile Disc) player, a DVD recorder, a BD (Blu-ray Disc) player, a BD recorder, an HDD (Hard Disk Drive) recorder, and an image control circuit. The three-dimensional display device 1990 is a television, a personal computer (PC) monitor, or other display device capable of three-dimensional display.

The image reproduction device 1900 according to the present modification includes the tuner 304, the CPU 310, the RAM 346, the ROM 348, the audio signal processing circuit 370, the memory card drive device 380, the infrared communication device 1902, the disk drive device 1920 and the HDD 1944. , A monitor 1950, an audio output 1940, an audio input 1970, and a data communication I / F 1978. The same reference numerals as in the configuration shown in FIG. 3 denote the same hardware. Therefore, their description will not be repeated.

Infrared communication device 1902 receives an infrared signal for controlling the operation of image reproduction device 1900. In another aspect, communication of control signals may use Bluetooth or other signals instead of infrared communication.

The disk drive device 1920 receives the mounting of the optical disk 1922. The optical disc 1922 is a DVD, BD or other disc. The optical disc 1922 stores data for three-dimensional display, and is read by the disc drive device 1920. The HDD 1944 stores image data.

The audio input 1970 is an interface for receiving an input of an audio signal from the outside of the image reproduction device 1900. The audio output 1940 is an interface for outputting audio to the outside of the image reproduction device 1900 (for example, a television, headphones, etc.).

The monitor 1950 is disposed on the front of the housing of the image reproduction device 1900, and displays the operating state of the image reproduction device 1900.

The data communication I / F 1978 communicates control signals with the three-dimensional display device 1990 and other display devices. In one aspect, the data communication I / F 1978 is, for example, a high-definition multimedia interface (HDMI), but other communication standards may be used. In one aspect, the data communication I / F 1978 sends a signal for controlling switching between 2D and 3D display to the three-dimensional display device 1990.

The three-dimensional display device 1990 includes a data communication I / F 1991, a CPU 1992, and a liquid crystal display 1993. The data communication I / F 1991 communicates control signals in the same manner as the data communication device 1978. In one aspect, the data communication device 1991 receives, from the data communication I / F 1978, a signal for controlling switching of display of an image by the liquid crystal display 1993 between two-dimensional display and three-dimensional display.

The CPU 1992 controls formation of a parallax barrier by the liquid crystal display 1993 based on a control signal sent from the data communication I / F 1991. The aspect of this control is as shown in the above-mentioned embodiment.

As described above, cellular phone 100 according to the present embodiment or image reproduction device 1900 according to the present modification generates crosstalk without performing processing for suppressing crosstalk for all pixels. Execute processing only for the place where you Therefore, it is possible to prevent the decrease in the contrast or the brightness of the entire screen.

It should be understood that the embodiments disclosed herein are illustrative and non-restrictive in every respect. The scope of the present invention is shown not by the above description but by the scope of claims, and is intended to include all modifications within the scope and meaning equivalent to the scope of claims.

The technical concept according to the present embodiment is applied to a portable telephone, a PDA terminal, a monitor device, a television receiver and other image display terminals, which can be three-dimensionally displayed using a parallax barrier method. Can.

100 mobile phones, 110, 120 housings, 130 two-axis hinges, 140 speakers, 150 displays, 160 buttons, 170 microphones, 304 tuners, 306, 308 antennas, 316 GPS antennas, 320 cameras, 382 memory cards.

Claims

An image display device,
A display device capable of three-dimensional display;
A memory for holding left-eye image data and right-eye image data;
A parallax determination unit configured to specify a parallax portion based on a difference between the image data for the left eye and the image data for the right eye;
And an image processor for generating data for displaying an image based on the image data for the left eye and the image data for the right eye.
The image display apparatus, wherein the image processor is configured to generate display data for the left eye and display data for the right eye by performing crosstalk correction processing on the specified parallax portion.
The image processor generates the display data for the left eye and the display data for the right eye for pixels whose difference between the image data for the left eye and the image data for the right eye is larger than a predetermined value. The image display device according to claim 1, wherein the image display device is configured as follows.
The image processor generates display data for the left eye by subtracting luminance based on the difference for the left eye from the image data for the left eye, and based on the difference for the right eye from the image data for the right eye The image display device according to claim 1 or 2, configured to generate display data for the right eye by subtracting the luminance.
The image processor is
The display data for the left eye is generated by adding the luminance predetermined for the left eye to the display data for the left eye,
The image display apparatus according to any one of claims 1 to 3, configured to generate display data for the right eye by adding a predetermined luminance for the right eye to the display data for the right eye.
The memory is configured to store a predetermined correction coefficient for each of a plurality of sub-regions constituting a display region of the display device.
The image processor is configured to generate the display data for the left eye and the display data for the right eye for each of the sub regions by correcting the luminance using the correction coefficient. The image display device according to any one of 1 to 4.
The image processor is configured to generate display data for the left eye and display data for the right eye using coefficients defined for each of the R component, the G component, and the B component of an image. The image display device according to any one of 1 to 5.
A display control device connected to a display device capable of displaying a three-dimensional image by forming a parallax barrier, for controlling display of an image by the display device, the display device including a liquid crystal display device A backlight for supplying light to the liquid crystal display device, and forming means for forming a parallax barrier;
The display control device
A communication circuit configured to communicate control signals with the display device;
A memory for holding left-eye image data and right-eye image data;
A parallax determination unit configured to specify a parallax portion based on a difference between the image data for the left eye and the image data for the right eye;
An image processor configured to generate data for displaying an image based on the image data for the left eye and the image data for the right eye,
The display control device, wherein the image processor is configured to generate display data for the left eye and display data for the right eye by performing crosstalk correction processing on the specified parallax portion.
The image processor generates the display data for the left eye and the display data for the right eye for pixels whose difference between the image data for the left eye and the image data for the right eye is larger than a predetermined value. The display control device according to claim 7, wherein the display control device is configured to:
The image processor is
Display data for the left eye is generated by subtracting the luminance based on the difference for the left eye from the image data for the left eye.
The display control device according to claim 7, wherein display data for the right eye is generated by subtracting luminance based on the difference for the right eye from the image data for the right eye.
The image processor is
The display data for the left eye is generated by adding the luminance predetermined for the left eye to the display data for the left eye,
The display control device according to any one of claims 7 to 9, wherein display data for the right eye is generated by adding a predetermined luminance for the right eye to the display data for the right eye.
The memory is configured to store a predetermined correction coefficient for each of a plurality of sub-regions constituting a display region of the display device.
The image processor is configured to generate the display data for the left eye and the display data for the right eye for each of the sub regions by correcting the luminance using the correction coefficient. The display control device according to any one of 7 to 10.
The image processor is configured to generate display data for the left eye and display data for the right eye using coefficients defined for each of the R component, the G component, and the B component of an image. The display control device according to any one of 7 to 11.