KR101890929B1 - Image data generating method and stereoscopic image display using the same - Google Patents

Abstract

The present invention relates to a method of generating image data and a stereoscopic image display apparatus using the same, and in which dummy data is allocated between pixel data in each of a left eye image and a right eye image, and a weight is reflected in each of the pixel data, To generate compensation data.

Description

TECHNICAL FIELD [0001] The present invention relates to a method of generating image data and a stereoscopic image display device using the same,

The present invention relates to a method of generating image data and a stereoscopic image display apparatus using the same.

A stereoscopic image reproduction technology has been applied to a display device such as a television or a monitor, and it is time to appreciate 3D stereoscopic images at home. The stereoscopic image display device can be divided into a spectacle method and a non-spectacle method. The spectacle method realizes a stereoscopic image by using polarizing glasses or liquid crystal shutter glasses by changing the polarization direction of the right and left parallax images to a direct view type display device or projector and displaying them in a time division manner. Such as a parallax barrier or a lenticular lens, for separating the stereoscopic image, is installed in front of or behind the display screen to realize a stereoscopic image.

The 3D image data input to the stereoscopic image display device can be input in the format shown in FIG. In the data format shown in FIG. 1 (a), one frame data is divided into two horizontally, left eye image data (LEFT) is allocated to the left half, and right eye image data (RIGHT) is allocated to the right half. In the data format shown in FIG. 1 (b), one frame data is divided into upper and lower halves to allocate left eye image data (LEFT) to the upper half and right eye image data (RIGHT) to the lower half. Recently, a data format as shown in FIG. 1 (c) has also been proposed. In the data format shown in FIG. 1C, one frame data is divided into blocks of a check pattern type, and left eye image data (LEFT) and right eye image data (RIGHT) are allocated to neighboring blocks. In the 3D image data format as shown in FIG. 1, the left eye image data and the right eye image data are each spatially divided in one frame data. Therefore, the resolution of each of the left eye image data and the right eye image data is 1/2 resolution with respect to the resolution of the display panel.

The stereoscopic image display apparatus receives one frame data including left eye image data (LEFT) and right eye image data (RIGHT) as shown in FIG. 1 and outputs left eye image data (LEFT) and right eye image data (RIGHT) Lt; / RTI > The stereoscopic image display apparatus further generates left eye image data that has not been input by using the left eye image data (LEFT) of a half frame amount, thereby generating left eye image data LEFT by horizontally and / (Or vertical direction). In the same way, the stereoscopic image display device extends the right eye image data (RIGHT) of a half frame amount. The stereoscopic image display device spatially distributes or time-divides the extended left eye image data (LEFT) and extended right eye image data (RIGHT) to pixels on the display panel spatially.

FIGS. 2 and 3 show an example of one frame data in the Sidy by Side format as shown in FIG. 1 (a). When the resolution of the data is Full HD resolution (1920 * 1080), the left-eye image data LEFT of the left half and the right-eye image data RIGHT of the right half are 960 pixels in the horizontal resolution, Therefore, the stereoscopic image display apparatus generates left eye and right eye image data by using the left eye image data and the right eye image data of 3D image data as shown in FIGS. 2 and 3, respectively, The resolution of the 3D image is increased. 3, "L1, L3, L5, L7 ... L1919" are the odd-numbered pixel data of the input left eye image data, and "R1, R3, R5, R7 ... R1919" And the odd-numbered pixel data.

The left and right eye image data expansion methods generally generate pixel data that is not input by copying pixel data, or pixel data that is not input as an average value of neighboring pixel data. For example, the stereoscopic image display device copies the odd-numbered pixel data (L1, L3, L5, L7 ... L1919) of the left eye image data input in FIG. 3, And the even pixel data of the right eye image data (R1, R3, R5, R7 ... R1919) of the right eye image data input in the same way can be copied to generate the right pixel data of the right eye image data. Alternatively, the stereoscopic image display apparatus may display the average value A of the odd-numbered pixel data (L1, L3, L5, L7 ... L1919) of the left eye image data input in FIG. Of the right eye image data and a mean value (A) of the odd pixel data (R1, R3, R5, R7 ... R1919) of the right eye image data input in the same way, Lt; / RTI > In the example of FIG. 6, the average value generated between the pixel data of the first and third column lines L1 and L3 in the left eye image data is A = (L1 + L3) / 2, The average value generated between the pixel data of the lines L3 and L5 is A = (L3 + L5) / 2. In FIGS. 4 and 6, "C" is the pixel data of the odd-numbered pixels that are copied by the input odd-numbered pixel data or generated by the average value A thereof. 5 and 7, "SBS (Side By Side) image" is data (FIG. 1 (a)) in which odd columns are deleted from the original image.

However, if the extended 3D image data is displayed on the stereoscopic image display device using such a data generation method, as shown in FIG. 5 and FIG. 7, data distortion is seriously observed in the diagonal or vertical direction as compared with the original image, and readability Falls. When the left eye image data and the right eye image data of the 3D image input to the stereoscopic image display apparatus are divided into one frame data as shown in FIG. 1 and data generation is required, it is difficult for the additional generated data to be the same as the original image. Therefore, in the method of additionally generating a part of the left eye image data and the right eye image data, a problem of data distortion and readability inevitably appears.

The present invention relates to a stereoscopic image display device in which left eye image data and right eye image data are input in a form of spatial division of one frame data, A method of generating image data and a stereoscopic image display device using the same are provided.

According to another aspect of the present invention, there is provided a method for generating image data, the method comprising: assigning predetermined dummy data to each of left eye image data and right eye image data, and setting a predetermined size window for giving a predetermined weight to each of the left eye image data and the right eye image data; Receiving input data including left eye image data and right eye image data having a resolution lower than a resolution of the display panel and mapping the window to the input data; Eye image by allocating the dummy data between the pixel data of the neighboring left eye image using the window and reflecting the weight to each pixel data of the left eye image, Generating compensation data and generating compensation data of another left eye image while moving the window; And assigning the dummy data between pixel data of a neighboring right eye image using the window and reflecting the weight to each pixel data of the right eye image, And generating compensation data of another right eye image while moving the window.

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The image display apparatus of the present invention assigns predetermined dummy data to each of the left eye image data and the right eye image data to input data including left eye image data and right eye image data having resolutions lower than the resolution of the display panel, Eye image data and a right-eye image data to generate a left-eye image data and an expanded right-eye image data by mapping compensation data to each of the left-eye image data and the right-eye image data by mapping a window of a predetermined size for weighting each of right- A data extension; And a display panel driver for spatially dividing and writing or time-sharing the left-eye and right-eye image data extended by the 3D image data expanding unit to pixels of the display panel.
The 3D image data extension unit allocates the dummy data between pixel data of a neighboring left eye image using the window and reflects the weight to each pixel data of the left eye image to generate pixel data of the neighboring left eye image Eye image by adding the compensation data of the left eye image to the left eye image data by repeating the process of generating the compensation data of the left eye image and moving the window and generating compensation data of another left eye image, The compensation data of the right eye image is generated between the pixel data of the neighboring right eye image by allocating the dummy data between pixel data of neighboring right eye images and reflecting the weight to each pixel data of the right eye image While moving the window, Repeating the step of generating a compensation data of the image not to be added to the compensation data of the right-eye image to the right eye image data.

1 (a) to 1 (c), when the left eye and right eye image data having resolutions lower than the resolution of the display panel are input, the left eye image data is weighted to increase the resolution of the data, Generates right eye image data, adds weight to the right eye image data, and generates right eye image data. As a result, in a stereoscopic image display device in which left-eye image data and right-eye image data are input in a form of being spatially divided into one frame data, when data of left eye and right eye image are additionally generated, data distortion is reduced and readability is improved .

1 is a diagram illustrating a 3D image data format input to a stereoscopic image display apparatus.
FIG. 2 is a diagram showing Full HD resolution in the 3D image data format as shown in FIG. 1 (a).
FIG. 3 is a diagram showing left eye image data of a portion A and right eye image data of a portion B in FIG.
4 is a diagram illustrating a method of expanding 3D image data using data copy.
FIG. 5 is a diagram illustrating an example in which the image quality is degraded in the data expansion method shown in FIG.
6 is a diagram illustrating a method of expanding 3D image data using an average value of neighboring data.
FIG. 7 is a diagram illustrating an example in which the image quality is degraded in the data expansion method shown in FIG.
8 is a view illustrating a first embodiment of a window applicable to a method of generating image data of a stereoscopic image display apparatus according to an embodiment of the present invention.
FIGS. 9 to 11 are diagrams illustrating operations of the image data generation method using the window shown in FIG.
FIGS. 12 and 13 illustrate experimental results of the image data generation method using the window shown in FIG.
FIG. 14 is a diagram illustrating a method of copying input data of right image data of FIG. 9 or a result of expanding data by an average value of neighboring input data.
FIG. 15 is a diagram illustrating a second embodiment of a window applicable to a method of generating image data of a stereoscopic image display apparatus according to an embodiment of the present invention.
16 is a diagram illustrating a third embodiment of a window applicable to a method of generating image data of a stereoscopic image display apparatus according to an embodiment of the present invention.
17 is a view showing a fourth embodiment of a window applicable to a method of generating image data of a stereoscopic image display apparatus according to an embodiment of the present invention.
18 is a view showing a fifth embodiment of a window applicable to a method of generating image data of a stereoscopic image display apparatus according to an embodiment of the present invention.
19 is a view illustrating a sixth embodiment of a window applicable to a method of generating image data of a stereoscopic image display apparatus according to an embodiment of the present invention.
20 is a view showing a seventh embodiment of a window applicable to a method of generating image data of a stereoscopic image display apparatus according to an embodiment of the present invention.
21 is a diagram illustrating an eighth embodiment of a window applicable to a method of generating image data of a stereoscopic image display apparatus according to an embodiment of the present invention.
FIGS. 22 and 23 are views illustrating the operation of the image data generation method using the window shown in FIG.
24 is a block diagram illustrating a display panel driver and a 3D filter driver in a stereoscopic image display apparatus according to an exemplary embodiment of the present invention.
25 is a sectional view showing a lenticular lens film or a switchable lens.
26 is a sectional view showing a parallax barrier or a switchable barrier.
27 is a diagram showing an example of a driving method without loss of resolution in a stereoscopic image display apparatus of a non-eyeglass system.
28 is a diagram showing a stereoscopic image display apparatus of the polarizing glasses system.
FIG. 29 is a diagram showing a stereoscopic image display apparatus of the shutter glasses system. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Like reference numerals throughout the specification denote substantially identical components. In the following description, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

The image display apparatus of the present invention receives left eye and right eye image data having resolutions lower than the resolution of the display panel. In addition, the image display apparatus of the present invention adds weight to the left eye image data to generate left eye image data, and weighting the right eye image data to generate right eye image data. The weight is set at the edge where the input data is located in the window of the predetermined size. The present invention maps such window to input data, assigns a weight to the input data, generates data, and sequentially generates other data while shifting the window.

Before describing the embodiments, some terms used in the embodiments will be defined as follows.

The stereoscopic image display device of the present invention can be applied to a liquid crystal display (LCD), a field emission display (FED), a plasma display panel (PDP), an organic light emitting diode An organic light emitting display (OLED), an electrophoretic display (EPD), or the like. The stereoscopic image display apparatus can be realized as a stereoscopic image display apparatus of a non-eyeglass system or a stereoscopic image display apparatus of a glasses system, and displays 2D image data in a 2D mode and 3D image data in a 3D mode. A 3D filter may be bonded on the display panel of the stereoscopic image display device. The stereoscopic image display apparatus of the glasses system can be realized by the polarizing glasses system or the shutter glasses system.

A 3D filter is an optical component that separates subpixels viewed through the viewer's left eye and subpixels viewed through the right eye. The 3D filter may be an optical component such as a parallax barrier or a lenticular lens in a spectacle-free stereoscopic image display device, or may be a pattern retarder or an active retarder in a stereoscopic image display device of a glasses system. The parallax barrier and the lenticular lens can be realized by a switchable barrier or a switchable lens that is electrically controlled using a liquid crystal panel. The applicant of the present application has proposed a switchable barrier and a switchable lens through US Application No. 13/077565, US Application No. 13/325272, Application No. 10-2010-0030531, and Application No. 10-2010-0130547, etc.

8 is a view illustrating a first embodiment of a window applicable to a method of generating image data of a stereoscopic image display apparatus according to an embodiment of the present invention.

Referring to FIG. 8, in the method of generating image data of the present invention, when 3D image data is input in a data format as shown in FIG. 1, a weighted window is mapped to input data, The compensation data (C) is calculated by dividing the sum by the sum of the weights and averaging.

The window illustrated in Fig. 8 is applied to the left eye and right eye image data as shown in Fig. 1 (a). The window illustrated in Fig. 8 may also be applied to left and right neighboring left eye and right eye image data blocks in Fig. 1 (c).

In the data format shown in FIG. 1 (a), the left eye and right eye image data include only data of odd column lines. In this case, the image data generation method of the present invention calculates the compensation data C using the window shown in FIG. 8 and applies the compensation data C as pixel data of the even-numbered column lines to which no compensation data C is input.

In the window of Fig. 8, the compensation data position is defined as the center position. In FIG. 8, the window size is exemplified by 3x3, but is not limited thereto. For example, the window size may be set to 5 x 5, 7 x 7, and the like. The weights set in the window are multiplied by the input data. Thus, the weights are set in the left and right edge columns of the left and right edges of the window with the compensation data position in between.

The weight is exemplified as "1" in Fig. 8, but is not limited thereto. For example, the weights are selected from positive integers greater than or equal to one. The weight may be set to a different value depending on the position in the window as shown in FIG.

The weights are set in the odd-numbered column lines located at the left edge and the right edge in the window of Fig. 8, whereas the compensation data positions are not set at the even-th column line that is traversed along the vertical direction (or column line direction) . Where the even column line is the center column line across the center in the window.

The operation of the image data generation method will be described with reference to FIGS. 9 and 10. FIG. The original image shown on the left side of FIG. 9 is a part of any one of the left eye and right eye image data of the original 3D image. The data format as shown in FIG. 1 (a) includes only data of odd-numbered column lines as Side by Side image shown in the right side of FIG.

The image data generation method of the present invention first receives side by side image data shown in the right side of FIG. 9, arranges the data into pixel data of an odd column line, and outputs dummy data "0 Quot; In the image data generation method of the present invention, the window shown in FIG. 8 is mapped as shown in FIG. 10A, the input data existing in the window is multiplied by a weight, and the compensation data C is calculated as an average of the sum . In Fig. 10A, input data larger than 0 in the window includes only one pixel data having the "255" gradation value. Therefore, the compensation data C in FIG. 10A is C = (255 * 1) * 1/6 = 255/6 = 43. The image data generation method of the present invention calculates the compensation data C while shifting the window by two dots (dot or sub-pixel) unit. In Fig. 10C, input data larger than 0 in the window includes only two pixel data having a "255" gradation value. Therefore, the compensation data C in FIG. 10C is C = {(255 * 1) + (255 * 1)} 1/6 = (255 + 255) / 6 = 85. The image data generation method of the present invention repeats this method to calculate the compensation data (C) and inserts the compensation data (C) as pixel data of the even column line among the input data. As a result, the image data generation method of the present invention can extend the left eye or right eye image data at the same resolution as the resolution of the original image data, as shown in FIG. 10 (e). 11 (a) is an original image of FIG. 9, and FIG. 11 (b) is an image expanded by the image data generating method of the present invention.

Such an image data generation method can calculate data in units of subpixels. For example, when one pixel includes red, green, and blue subpixels, the image data generation method of the present invention generates red, green and blue subpixels of the odd-numbered column lines input in the data format as shown in FIG. The compensation data is calculated by mapping the window as shown in FIG. 8, and the compensation data is applied to the red subpixel data of the even column line. The image data generation method of the present invention maps the green subpixel data of the odd column lines to the window as shown in FIG. 8 to calculate compensation data, and applies the compensation data as green subpixel data of the even column line. In the image data generation method of the present invention, the compensation data is calculated by mapping the window shown in FIG. 8 to the blue subpixel data of the odd-numbered column lines input in the data format as shown in FIG. 1 (a) Blue subpixel data of the even column line.

The image data generation method of the present invention can calculate data on a pixel-by-pixel basis. In this case, the image data generation method of the present invention calculates the compensation data C while shifting the window by two pixels.

FIGS. 12 and 13 illustrate an SBS image input to a smoothing filter using a window as shown in FIG. 9 to expand data, and reproduce the result in a stereoscopic image display device to capture an image recognized by a viewer.

FIG. 14 shows a result (c) obtained by expanding the data by copying the input data, or (b) generating the compensation data with the average value, in the same way as in the prior art with respect to the right data of FIG. 11 and 14, the image data generation method of the present invention can reduce data distortion (or noise) in the vertical and diagonal directions and improve readability in comparison with the prior art.

FIG. 15 is a diagram illustrating a second embodiment of a window applicable to a method of generating image data of a stereoscopic image display apparatus according to an embodiment of the present invention. 16 is a diagram illustrating a third embodiment of a window applicable to a method of generating image data of a stereoscopic image display apparatus according to an embodiment of the present invention. 17 is a view showing a fourth embodiment of a window applicable to a method of generating image data of a stereoscopic image display apparatus according to an embodiment of the present invention.

The window of Fig. 15 can also be applied to left and right eye and right eye image data blocks adjacent to left and right in Figs. 1 (a) and 1 (c). In this window, the weights adjacent to the left and right of the compensation data are set to values larger than the compensation data and the weights neighboring in the diagonal direction. Alternatively, neighboring weights in the diagonal direction of the compensation data may be set to values greater than the weights neighboring the right and left of the compensation data.

16 and 17, a weight is set to a neighboring data position just above the compensation data, which is greater than zero. 16 and 17, the window is shifted and the compensating data (C) of one row line is generated while the window is shifted as shown in FIG. 10, Weighting can be given. 16 and 17 can further improve the continuity of the data in the vertical direction of the compensation data.

The data format shown in FIG. 1 (b) includes only the odd-numbered row line data. The windows illustrated in Figs. 18 to 21 may be applied to expand the data input to the stereoscopic image display device in the data format as shown in Fig. 1 (b).

18 to 21, the window size is exemplified by 3x3, but is not limited thereto. The center of the window is mapped to the compensation data location to be applied as the pixel data of the even row line. For example, the window size may be set to 5 x 5, 7 x 7, and the like. The weights set in the window are multiplied by the input data. The weights are assigned to the upper and lower low-level lines separated by the compensation data position in the window.

In the window shown in Figs. 18 and 19, the weights are set in the odd-numbered row lines located at the upper and lower ends in the window, while the compensated data positions are set in the odd-numbered rows that cross the horizontal direction (or the row line direction) It is not set to the low line. Here, the even-numbered row line is a central low-line line passing through the center in the window. 20 and 21 may weight data already generated on the opposite side of the window shift direction. In the window shown in Figs. 20 and 21, a weight value larger than 0 is additionally set to the data position adjacent to the left side of the compensation data.

The weight is exemplified as "1" in Fig. 18, but is not limited thereto. For example, the weights may be selected from positive integers of one or more, as shown in Figs. 19 to 21, and may be set to different values depending on positions in the window.

FIG. 22 and FIG. 23 show an example of a method of extending data using the window shown in FIG.

The original image shown on the left side of FIG. 22 is a part of any one of left eye and right eye image data of the original 3D image. The right image of FIG. 22 includes only data of odd-numbered row lines as the data format of FIG. 1 (b).

The image data generating method of the present invention first receives the data shown in the right side of FIG. 22, arranges the data into the pixel data of the odd row line, and gives dummy data "0" . In the image data generation method of the present invention, the window as shown in FIG. 18 is mapped as shown in FIG. 23A, the input data existing in the window is multiplied by a weight, and the compensation data C . In Fig. 23A, input data larger than 0 in the window includes only one pixel data having a "255" gradation value. Therefore, the compensation data C in FIG. 23A is C = (255 * 1) * 1/6 = 255/6 = 43. The image data generating method of the present invention calculates the compensation data (C) while shifting the window by one dot (or subpixel) or one pixel unit. In Fig. 23 (b), input data larger than 0 in the window includes only three pixel data having a "255" gradation value. Therefore, the compensation data C in FIG. 23 (C) is C = {(255 * 1) + (255 * 1) + (255 * 1)} 1/6 = (255 + 255 + 255) / 6 = 128. After calculating the compensation data of one low line, the window is shifted down two low lines and mapped to the data to calculate the next compensation data. In the image data generation method of the present invention, such a method is repeated to calculate the compensation data (C), and the compensation data (C) is inserted between the input data as pixel data of the even row line. As a result, the image data generation method of the present invention can expand the left eye or right eye image data at the same resolution as the original image data.

24 is a block diagram illustrating a display panel driver and a 3D filter driver in a stereoscopic image display apparatus according to an exemplary embodiment of the present invention. 25 is a sectional view showing a lenticular lens film or a switchable lens. 26 is a sectional view showing a parallax barrier or a switchable barrier. 27 is a diagram showing an example of a driving method without loss of resolution in a stereoscopic image display apparatus of a non-eyeglass system. 28 is a diagram showing a stereoscopic image display apparatus of the polarizing glasses system. FIG. 29 is a diagram showing a stereoscopic image display apparatus of the shutter glasses system. FIG.

The stereoscopic image display apparatus of the present invention can be realized by a spectacle-free display apparatus as shown in FIG. 25 to FIG. 27 or a stereoscopic image display apparatus of a spectacle type as shown in FIG. 28 and FIG.

Referring to FIG. 24, the stereoscopic image display apparatus of the present invention includes a display panel 100, a 3D filter 200 bonded on the display panel 100, a display panel driver, a 3D filter driver 210, a timing controller 101 A 3D image data expanding unit 130, and the like.

The display panel 100 includes a pixel array in which data lines 105 and scan lines (or gate lines) 106 are orthogonalized and pixels are arranged in a matrix form. The pixel array displays a 2D image in the 2D mode and a left eye image and a right eye image in the 3D mode.

The 3D filter 200 may be a lenticular lens film or a switchable lens LENTI as shown in Fig. 25, a parallax barrier or switchable barrier (BAR) as shown in Figs. 26 and 27, or a pattern retarder PR ), And an active retarder. When the 3D filter 200 is implemented as a pattern retarder (PR), the viewer must watch 3D images by wearing polarized glasses (PG) as shown in FIG. The switchable lens LENTI and the switchable barrier (BAR) include a birefringent medium such as liquid crystal and are electrically driven by the 3D filter driver 210 to emit light from the left eye subpixels and from the right eye subpixels Separate the path of light. The active retarder includes a birefringent medium such as liquid crystal and is electrically driven by the 3D filter driving unit 210 to modulate polarization characteristics of a left-eye image and a right-eye image that are time-divided in frame units. If the 3D filter 200 is implemented as an optical component such as a parallax barrier, a lenticular lens film, and a pattern retarder (PR), which is not electrically controlled, the 3D driver 210 is not required.

The display panel driving unit includes a data driving circuit 102 for supplying the data voltages of the 2D / 3D image to the data lines 105 of the display panel 100, And a scan driving circuit 103 for sequentially supplying pulses (or gate pulses). The display panel driver spatially distributes the left-eye and right-eye image data extended by the 3D image data expansion unit 130 described later to the pixels of the display panel 100 and writes or time-divisionally writes them.

The data driving circuit 102 converts digital video data input from the timing controller 101 into an analog gamma voltage to generate data voltages and supplies the data voltages to the data lines 105 of the display panel 100. In the case of a liquid crystal display element, the data driving circuit 102 can reverse the polarity of the data voltage supplied to the data lines 105 under the control of the timing controller 101. The scan driver circuit 103 supplies a scan pulse synchronized with the data voltage supplied to the data lines 105 to the scan lines 106 under the control of the timing controller 101 and sequentially shifts the scan pulses .

The 3D filter driver 210 is driven in the 3D mode under the control of the timing controller 101. The 3D filter driving unit 210 drives a switchable lens (LENTI), a switchable barrier (BAR), or an active retarder in synchronization with 3D image data written in a pixel array of the display panel (100).

The timing controller 101 supplies digital video data (RGB) of a 2D / 3D input image input from the host system 110 to the data driving circuit 102. The timing controller 101 synchronizes with the digital video data RGB of the 2D / 3D input video and outputs a timing signal such as a vertical synchronizing signal, a horizontal synchronizing signal, a data enable signal, and a main clock input from the host system 110 GDC, and GDC for controlling the operation timings of the display panel driving units 102 and 103 and the 3D filter driving unit 210 using the timing signals and for synchronizing the operation timings of the driving units, SBC).

The timing controller 101 raises the frame frequency of the input image to the frame frequency x N (where N is a positive integer equal to or greater than 2) Hz and multiplies the operation frequency of the display panel driving units 102 and 103 and the 3D filter driving unit 210 by N times The frame rate can be controlled. The frame frequency of the input image is 60 Hz in the National Television Standards Committee (NTSC) system and 50 Hz in the PAL (Phase-Alternating Line) system.

The 3D data arrangement unit 120 may be installed between the host system 110 and the 3D image data extension unit 130. The 3D data sorting unit 120 rearranges the left eye image data and the right eye image data (FIGS. 1 (a) to (c)) of the 3D image input from the host system 110 in the 3D mode according to the stereoscopic image implementation scheme And supplies it to the 3D image data expansion unit 130. The 3D data arrangement unit 120 inserts dummy data between the left eye image data input in the data format as shown in FIGS. 1 (a) to 1 (c) The dummy data is inserted between the right eye image data input in the data format. When the 2D image data is input in the 3D mode, the 3D data sorting unit 120 executes a predetermined 2D-3D image transformation algorithm to generate left eye image data and right eye image data from the 2D image data, (130).

The 3D image data expansion unit 130 executes the image data generation method described above in the 3D mode to generate left eye and right eye image data by referring to the input data to expand the left eye and right eye image data. Accordingly, the 3D image data expansion unit 130 maps the above-described window to the left eye image data and the dummy data, multiplies all of the left eye image data in the window by the weights, and generates another left eye image data as a result of averaging the sum of the results . The 3D image data expander 130 maps the window to the right eye image data and the dummy data, multiplies the right eye image data in the window by a weight, and generates another right eye image data as a result of averaging the sum of the results. The 3D image data expansion unit 130 supplies extended left and right eye image data to the timing controller 101. The timing controller 101 converts the left and right eye image data expanded in accordance with the driving characteristics of the stereoscopic image display apparatus into a space Divided or time-divided and supplied to the data driving circuit 102.

 The host system 110 may be implemented as any one of a navigation system, a set top box, a DVD player, a Blu-ray player, a personal computer (PC), a home theater system, a broadcast receiver, and a phone system. The host system 110 converts the digital video data of the 2D / 3D input image into a format suitable for the resolution of the display panel (PNL) 100 using a scaler, and transmits a timing signal to the timing controller 101 together with the data. Lt; / RTI >

The host system 110 supplies the 2D image to the timing controller 101 in the 2D mode while supplying the 3D image or the 2D image data to the 3D data sorting unit 120 in the 3D mode. The host system 110 may switch a 2D mode operation and a 3D mode operation by transmitting a mode signal to the timing controller in response to user data input through a user interface (not shown). The user interface includes a keypad, a keyboard, a mouse, an on screen display (OSD), a remote controller, a graphical user interface (GUI), a touch UI (user interface) UI, or the like. The user can select the 2D mode and the 3D mode through the user interface, and select the 2D-3D image conversion in the 3D mode.

The three-dimensional image display apparatus of the shutter glasses system requires the left eye image data written in the display panel 100 and the shutter glasses SG which are turned on / off in synchronization with the right eye image data. In this case, the host system 110 or the timing controller 101 can transmit a shutter control signal to the shutter glasses SG to electrically open and close the left and right eye shutters of the shutter glasses through the wired / wireless interface have. In the stereoscopic image display apparatus of the shutter glasses system, the 3D filter 200 and the 3D driver 210 that are connected to the display panel 100 are not required.

The driving method of the non-eye stereoscopic image display apparatus as shown in Fig. 27 has no resolution loss in each of the left eye image and the right eye image. This driving method electrically controls the switchable barrier (BAR) or the switchable lens (LENTI) as shown in FIG. 27 (a), and switches the switchable barrier (BAR) or the switchable lens (LENTI) And shifts the pixel data in the opposite direction. This driving method is described in detail in Korean Patent Application No. 10-2011-0134699, which is filed by the present applicant. FIG. 27 (b) shows the left eye and right eye images recognized by the viewer by the optical path of the left eye and the right eye image light separated by the switchable barrier (BAR) or the switchable lens LENTI. Fig. 27C shows the result of accumulation of the left eye image recognized by the viewer during n-th (n is a positive integer) and n + 1-th frame periods F (n) and F Show cumulative results. 27, "OL1, OL2" is the left eye image data written to the pixels of the display panel (PNL) during the nth (n is a positive integer) Right eye image data written to the pixels of the panel (PNL). "EL1, EL2" are the left eye image data written in the pixels of the display panel (PNL) during the (n + 1) Right eye image data.

The left eye and right eye image data of the 3D image input in the data format as shown in FIGS. 1 (a) through 1 (c) are input to the pixels of the display panel PNL of the stereoscopic image display apparatus as shown in FIG. Can be written. The 3D image data extension unit 130 maps input data, i.e., windows having weight values set to the data written to the pixels during the n-th frame period F (n), as in the above- Left eye and right eye image data. Left eye and right eye image data generated by the 3D image data expansion unit 130 may be written to pixels during the (n + 1) -th frame period F (n + 1).

28, the pattern retarder PR includes a first retarder PR1 opposed to the odd-numbered lines in the pixel array of the display panel PNL, and a second retarder PR2 opposed to the odd-numbered lines in the pixel array of the display panel PNL And a second retarder PR2 opposed thereto. Pixels in which the left eye image is displayed are arranged in the odd-numbered lines of the pixel array, and pixels in which the right eye image is displayed in the even-numbered lines are arranged. The left eye polarizing filter of the polarizing glasses PG passes only the first polarized light of the light emitted from the pixels arranged in the odd-numbered lines of the pixel array. The right eye polarizing filter of the polarizing glasses passes only the second polarized light of the light emitted from the pixels arranged on the even lines of the pixel array. Therefore, the viewer sees only the pixels on which the left eye image is displayed through the left eye polarization filter, and only the pixels on which the right eye image is displayed through the right eye polarization filter, so that the stereoscopic effect due to the binocular parallax can be felt.

The pattern retarder (PR) may be replaced by an active retarder. In this case, right eye image data is added to all the pixels during the (n + 1) -th frame period F (n + 1) after the left eye image data is written to all the pixels during the n-th frame period F . The active retarder passes only the first polarized light of the light emitted from the pixels during the n-th frame period F (n), and transmits only the light emitted from the pixels during the (n + 1) Of the second polarized light. Therefore, the viewer can observe the left eye image without degradation of resolution through the left eye polarizing filter, and can enjoy the right eye image without the resolution degradation through the right eye polarizing filter. It is necessary to expand the data of each of the left eye and right eye image data into which the 3D image data of the data format as shown in Figs. 1 (a) to 1 (c) is input to the stereoscopic image display apparatus of the polarizing glasses system including the active retarder. Such data expansion can be applied to the image data generation method described above.

A display panel (PNL) of the shutter glasses system three-dimensional display device, such as the FIG. 29 is written into the left-eye image data (RGB _L) during odd-numbered frame periods (F (n)). The left eye lens ST _L of the shutter glasses ST is electrically controlled and opened for the odd-numbered frame period F (n) in synchronization with the left eye image data RGB _L displayed on the display panel PNL, Th frame period F (n + 1). The right eye image data RGB _R is written to the display panel PNL during the odd-numbered frame period F (n + 1). While the opening for the right eye lens (ST _R) is electrically controlled by a display panel the right eye video data period (RGB _R) and is synchronized solid-th frame (F (n + 1)) shown in (PNL) of the shutter glasses (ST) , And is interrupted during the odd-numbered frame period F (n).

When the 3D image data of the data format as shown in Figs. 1 (a) to 1 (c) is input, the stereoscopic image display apparatus of the shutter glasses censer needs to increase the resolution of data by expanding each of the left eye and right eye image data. Such data expansion can be applied to the image data generation method described above. For example, the left eye and right eye image data of the 3D image input in the data format as shown in FIGS. 1 (a) to (c) are displayed on the display panel PNL of the stereoscopic image display apparatus as shown in FIG. Lt; / RTI > The 3D image data extension unit 130 maps input data, i.e., windows having weight values set to the data written to the pixels during the n-th frame period F (n), as in the above- Left eye and right eye image data. Left eye and right eye image data generated by the 3D image data expansion unit 130 may be written to pixels during the (n + 1) -th frame period F (n + 1).

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Therefore, the present invention should not be limited to the details described in the detailed description, but should be defined by the claims.

PNL, 100: display panel 101: timing controller
102: data driving circuit 103: scan driving circuit
110: host system 120: 3D data sorting unit
130: 3D image data expanding unit 200: 3D filter
LENTI: Lenticular lens, switchable lens
BAR: Parallax Barrier, Switcher Barrier

Claims (12)

Assigning preset dummy data to each of the left eye image data and the right eye image data and setting a window of a predetermined size for giving a predetermined weight to each of the left eye image data and the right eye image data;
Receiving input data including left eye image data and right eye image data having a resolution lower than a resolution of the display panel and mapping the window to the input data;
Eye image by allocating the dummy data between the pixel data of the neighboring left eye image using the window and reflecting the weight to each pixel data of the left eye image, Generating compensation data and generating compensation data of another left eye image while moving the window; And
The dummy data is allocated between the pixel data of the neighboring right eye images using the window and the weights are reflected on the pixel data of the right eye image, And generating compensation data of another right eye image while moving the window by repeating the process of generating compensation data of another right eye image while moving the window. The method according to claim 1,
Generating the compensation data of the left eye image and moving the window to generate compensation data of another left eye image,
And generating compensation data of the left eye image by dividing the sum of the results of multiplying the pixel data of the left eye image by the weights in the window by the sum of the weights,
Generating the compensation data of the right eye image and moving the window to generate compensation data of another right eye image,
And generating compensation data of the right eye image by dividing the sum of the pixel data of the right eye image by the weight in the window by the sum of the weights, Way. 3. The method of claim 2,
Wherein the compensation data is positioned at the center of the window in each of the left eye image and the right eye image,
Wherein the weight is set to at least one value at a position other than the center column line or the center low line of the window. The method of claim 3,
Wherein the weight value is set to a different value depending on a position in the window. 5. The method according to any one of claims 2 to 4,
Wherein the window is shifted in units of two subpixels or two pixels in each of the left eye image and the right eye image to generate different compensation data. 5. The method according to any one of claims 2 to 4,
Writing the input data including the left eye image data and the right eye image data to pixels of the display panel during an n-th (n is a positive integer) frame period; And
And writing the left eye image data to which the compensation data of the left eye image is added and the right eye image data to which the compensation data of the right eye image is added to the pixels of the display panel during an (n + 1) Wherein the image data is processed by the three-dimensional image display device. Eye image data and the right-eye image data are assigned to input data including left-eye image data and right-eye image data having resolutions lower than the resolution of the display panel, and the left eye image data and the right eye image data are weighted with predetermined dummy data, A 3D image data expanding unit for mapping the window of a predetermined size to give compensation image data and adding compensation data to each of the left eye image data and the right eye image data to generate expanded left eye image data and expanded right eye image data; And
And a display panel driver for spatially dividing the left-eye and right-eye image data extended by the 3D image data expanding unit into pixels of the display panel and writing or time-
Wherein the 3D image data expanding unit comprises:
Eye image by allocating the dummy data between the pixel data of the neighboring left eye image using the window and reflecting the weight to each pixel data of the left eye image, Eye image data by adding the compensation data of the left eye image to the left eye image data by repeating the process of generating the compensation data and generating compensation data of another left eye image while moving the window,
The dummy data is allocated between the pixel data of the neighboring right eye images using the window and the weights are reflected on the pixel data of the right eye image, And generating compensation data of another right eye image while moving the window, and adding compensation data of the right eye image to the right eye image data. 8. The method of claim 7,
Wherein the 3D image data expanding unit generates compensated pixel data of the left eye image by dividing the sum of the results of multiplying the pixel data of the left eye image by the weights in the window by the sum of the weights,
Wherein the compensation pixel data of the right eye image is generated by dividing the sum of the results of multiplying the pixel data of the right eye image by the weights in the window by the sum of the weights. 9. The method of claim 8,
Data to be generated is located at the center of the window,
Wherein the weights are set to one or more values at positions other than a center column line or a center low line of the window. 10. The method of claim 9,
Wherein the weight is set to a different value according to a position in the window. Receiving input data including left eye and right eye image data of resolution lower than the resolution of the display panel;
The dummy data set in advance between the pixel data of the neighboring left eye image is multiplied, each of the pixel data of the left eye image is multiplied by a predetermined weight, the sum of the pixel data of the left eye image multiplied by the weight is divided by the sum of the weights Generating compensation data of the left eye image as a result; And
The dummy data is allocated between pixel data of neighboring right eye images, each of the pixel data of the left eye image is multiplied by the weight, and the sum of the pixel data of the right eye image multiplied by the weight is divided by the sum of the weights And generating compensation data of the right-eye image. Receiving input data including left eye image data and right eye image data having resolutions lower than the resolution of the display panel and adding compensation data of the left eye image to the left eye image data to generate expanded left eye image data, A 3D image data expanding unit for adding the compensation data of the image to generate expanded right eye image data; And
And a display panel driver for spatially dividing the left-eye and right-eye image data extended by the 3D image data expanding unit into pixels of the display panel and writing or time-
Wherein the 3D image data expanding unit comprises:
The dummy data set in advance between the pixel data of the neighboring left eye image is multiplied, each of the pixel data of the left eye image is multiplied by a predetermined weight, the sum of the pixel data of the left eye image multiplied by the weight is divided by the sum of the weights As a result, the compensation data of the left eye image is generated,
The dummy data is allocated between pixel data of neighboring right eye images, each of the pixel data of the left eye image is multiplied by the weight, and the sum of the pixel data of the right eye image multiplied by the weight is divided by the sum of the weights And generates compensation data of the right-eye image.

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