WO2010122618A1 - 表示装置、表示方法、表示制御プログラム、及び、記録媒体 - Google Patents
表示装置、表示方法、表示制御プログラム、及び、記録媒体 Download PDFInfo
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- WO2010122618A1 WO2010122618A1 PCT/JP2009/006164 JP2009006164W WO2010122618A1 WO 2010122618 A1 WO2010122618 A1 WO 2010122618A1 JP 2009006164 W JP2009006164 W JP 2009006164W WO 2010122618 A1 WO2010122618 A1 WO 2010122618A1
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- video data
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- pixels
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/2092—Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133526—Lenses, e.g. microlenses or Fresnel lenses
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/02—Composition of display devices
- G09G2300/026—Video wall, i.e. juxtaposition of a plurality of screens to create a display screen of bigger dimensions
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0232—Special driving of display border areas
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2340/00—Aspects of display data processing
- G09G2340/04—Changes in size, position or resolution of an image
- G09G2340/0407—Resolution change, inclusive of the use of different resolutions for different screen areas
Definitions
- the present invention relates to a display device, in particular, a display device having a lens on a display surface, and a display method in the display device.
- Patent Document 1 discloses a technique in which a convex lens is provided on the display surface of a display and the pixel pitch of the display corresponding to a portion where the convex lens is curved is shortened.
- the expansion display of the image due to the display through the convex lens is suppressed.
- Patent Document 2 discloses a technique for providing a convex lens on a display surface of a plurality of display devices arranged side by side and selecting a focal length of the convex lens so that an enlarged virtual image is displayed.
- Patent Document 1 has a problem that it is not easy to manufacture in order to change the pixel pitch according to the curvature of the convex lens, and the versatility is poor.
- the technique described in Patent Document 1 has a problem that high positional accuracy is required when providing a convex lens.
- Patent Document 2 has a problem that the apparatus is easily increased in size and the position at which a virtual image, which is a position at which a joint is difficult to see, is easily displayed.
- the present invention has been made to solve the above problems, and its purpose is to provide a display device that is highly versatile, easy to manufacture, and capable of suppressing expansion display with a simple configuration, and It is to provide a display method.
- a display device of the present invention is a display device that includes a display unit and an optical unit that covers a display surface of the display unit, and the display unit includes pixels arranged in a matrix.
- the optical unit includes a lens having a planar range whose surface is a flat surface and a curved surface range whose surface is a convex curved surface, and the video data corresponding to each of the pixels is the original. Between the gradations of the original video data of each adjacent pixel for the adjacent pixels along the direction from the curved start end to the curved end of the curved surface in the range of pixels facing the curved surface range.
- An interpolated video data creating unit that creates interpolated video data that is video data having the following gradation, arranging the original video data in the order of the corresponding pixels, and When video data are arranged so that their gradations are continuous, video data corresponding to the number of pixels is selected at approximately equal intervals from the video data obtained by combining the original video data and the interpolated video data. It is characterized by the fact that a control unit is provided.
- the display device of the present invention is characterized in that the number of the interpolated video data to be created is determined based on a ratio that the video from the pixel is enlarged by passing through the curved surface range of the optical unit. .
- the interpolated video data includes a number determined in accordance with a ratio at which the video from the pixel expands by passing through the curved surface range of the optical unit. It is created.
- the display device of the present invention is a display method for a display device including a display unit and an optical unit that covers a display surface of the display unit.
- the optical unit is provided with a lens having a planar range whose surface is a flat surface and a curved surface range whose surface is a convex curved surface.
- the corresponding video data is the original video data, and the pixels in the range facing the curved surface range are adjacent to each other along the direction from the curved start end to the curved end of the curved surface.
- Interpolated video data which is video data having a gray level between two tones, is arranged, the original video data is arranged in the order of corresponding pixels, and the interpolated video data is converted to the original video data of the corresponding pixels.
- video data corresponding to the number of pixels is selected at equal intervals from video data obtained by combining the original video data and the interpolated video data. It is characterized by displaying video data.
- the display device of the present invention is characterized in that the number of the interpolated video data is generated in accordance with a ratio at which the video from the pixel expands by passing through the curved surface range of the optical unit.
- the interpolated video data which is video data having a gradation located between the gradations of each original video data of each adjacent pixel, is obtained. Created.
- the video displayed on the display unit tends to be an expanded display, which is a display in which the video that should originally be displayed is extended.
- the interpolated video data is created, and the interpolated video data is the original video data that is the video data originally input to each pixel with respect to the adjacent pixels for which the interpolated video data is created. Gradations having values located between these gradations.
- the video data group includes the lens Even when displayed via the video, the video data is difficult to be expanded.
- video data is selected from the original video data and the interpolated video data arranged as described above by the number of pixels at approximately equal intervals, and the selected video data is displayed. Is done.
- the displayed video data is video data thinned out at substantially equal intervals from the video data group corresponding to the enlargement of the video by the lens. Therefore, when displaying through a lens, a more natural and highly continuous display can be performed. As a result, the decompression display can be suppressed.
- the number of created interpolated video data is determined based on a ratio that an image from the pixel expands by passing through the curved surface range of the optical unit, the number is calculated based on the curved surface of the optical unit. It tends to be a value suitable for the shape. Therefore, when the interpolated video data and the original video data are arranged as described above, the video data group tends to be less likely to be expanded and displayed when displayed via the lens.
- the number of interpolation video data to be created is determined separately for each of the plurality of pixels according to a ratio at which the video from the pixel expands by passing through the curved surface range of the optical unit. Since the number is easily optimized in accordance with the curved surface shape at each position of the optical unit, it is easy to obtain the video data group that is less likely to be expanded display.
- the above configuration and method have versatility that is easily applicable to various lenses because it is easy to change the number and gradation of interpolated video data to be created.
- the above substantially equal interval is closer to the exact equal interval when the video data cannot be selected at an exact equal interval in relation to the number of original video data and interpolated video data and the number of pixels. As such, it means that video data is appropriately selected.
- the display unit includes pixels arranged in a matrix, and the optical unit includes a planar range whose surface is a plane and a curved surface whose surface is convex.
- a lens having a curved surface range, and the video data corresponding to each of the pixels is original video data, and the pixels in the range facing the curved surface range in a direction from the curved start end to the curved end of the curved surface.
- An interpolated video data creating unit for creating interpolated video data that is video data having a gradation between the gradations of each original video data of each of the adjacent pixels.
- the original video data and the interpolation From the image data obtained by combining the image data, and control unit to select the video data at substantially equal intervals by the number of pixels it is provided.
- the display unit includes pixels arranged in a matrix, and the optical unit has a plane range in which the surface is a plane, and the surface has a plane.
- Interpolated video data which is video data having a gradation between the gradations of the original video data of each adjacent pixel, is created for pixels adjacent along the direction toward the curved end, and the original video data is associated with the original video data.
- the original video data and the interpolated video data are From the Align were video data, equidistantly selects the video data of the number of pixels, a method of displaying video data as described above selected.
- FIG. 1 illustrates an embodiment of the present invention and is a diagram illustrating a state of enlargement of display by a lens.
- FIG. 5 is a diagram illustrating an embodiment of the present invention and an expansion of a display area.
- FIG. 3 is a diagram illustrating an embodiment of the present invention and showing original video data and interpolated video data.
- FIG. 3 is a diagram illustrating an embodiment of the present invention and an outline of creation of interpolation video data.
- FIG. 1 showing an embodiment of the present invention, is a diagram for explaining how to obtain the number of interpolations.
- FIG. 3 is a diagram illustrating an embodiment of the present invention and a range in which interpolation video data is created.
- FIG. 1 showing an embodiment of the present invention, is a diagram for explaining how to obtain the number of interpolations.
- FIG. 3 is a diagram illustrating an embodiment of the present invention and a range in which interpolation video data is created.
- FIG. 3 is a diagram illustrating an embodiment of the present invention and a range in which interpolation video data is created.
- FIG. 4 is a diagram for illustrating selection of thinned video data according to an embodiment of the present invention.
- FIG. 1 illustrates an embodiment of the present invention and is a diagram illustrating a relationship between a lens diameter and a lens width. Another embodiment of the present invention is shown, and is a diagram showing a schematic configuration of a liquid crystal display device.
- FIG. Another embodiment of the present invention is shown, and is a diagram showing a schematic configuration of a liquid crystal display device.
- FIG. 1 illustrates an embodiment of the present invention and is a diagram illustrating a relationship between a lens diameter and a lens width.
- Another embodiment of the present invention is shown, and is a diagram showing a schematic configuration of a liquid crystal display device.
- FIG. Another embodiment of the present invention is shown, and is a diagram showing a schematic configuration of a liquid crystal display device.
- FIG. 1 shows a schematic configuration when the liquid crystal display device of the present embodiment is viewed from its display surface
- FIG. 2 is a cross-sectional view taken along line AA of FIG.
- the display surface of the liquid crystal display device 10 as the display device of the present embodiment is covered with a lens 70 as an optical unit.
- the lens 70 is provided with a flat area 70a whose surface is flat and a curved area 70b whose surface is curved and functions as a convex lens.
- the curved surface range 70b is arranged along one long side which is one side among the four end sides of the rectangular display surface.
- the liquid crystal display device 10 includes a liquid crystal display panel 40 as a display unit, and a lens 70 provided on the display surface 42.
- pixels are arranged in a matrix, and lines orthogonal to each other are formed by the pixels.
- the curved surface range 70 b of the lens 70 is disposed in the vicinity of the end side 44 of the liquid crystal display panel 40.
- the display surface 42 includes a display area 46 where an image or the like is displayed and a non-display area 48 which is an area where an image or the like is not displayed, such as a so-called frame.
- the lens 70 is arranged such that the curved surface range 70 b covers both the display area 46 and the non-display area 48.
- the said curved surface range 70b demonstrated the structure provided along 1 long side in 4 edge sides of a display surface.
- the position and the number of the curved surface range 70b provided in the lens 70 are not particularly limited.
- the curved surface range 70b can be provided along the short side.
- the curved surface range 70b can be provided not only along one end side but also along two to four end sides.
- the lens 70 does not necessarily have the planar range 70a.
- the entire lens 70 can be a curved surface range 70b without providing the planar range 70a to the lens 70.
- FIG. 3 is a diagram showing a schematic configuration of the liquid crystal display device 10.
- the liquid crystal display device 10 of the present embodiment is provided with various control units in addition to the liquid crystal display panel 40 as the display unit.
- a source driver 12 and a gate driver 14 are provided around the liquid crystal display panel 40.
- the liquid crystal display device 10 is provided with a video RAM 24 for storing video data supplied to the source driver 12.
- the video RAM 24 is connected to the interpolated video data creation unit 20.
- the interpolated video data creation unit 20 creates interpolated video data which will be described later.
- the video RAM 24 stores input video data which is original video data (original video data) and the interpolated video data.
- the original video data (video data originally corresponding to each pixel) means video data originally input to each pixel. Specifically, for example, a normal image without the optical unit is provided. In a display device, it means video data input corresponding to each pixel.
- the video data (original video data and interpolated video data) once stored is output from the video RAM 24 and supplied to the source driver 12.
- liquid crystal display device 10 is provided with a control signal generation circuit unit 16 for controlling the source driver 12, the gate driver 14, and the video RAM 24.
- the control signal generation circuit unit 16 also functions as a control unit that selects video data supplied to the source driver 12 from the video data stored in the video RAM 24 (selection of thinned video data).
- an input control signal which is a signal for controlling the control signal generation circuit unit 16 is input to the control signal generation circuit unit 16.
- the liquid crystal display device 10 is provided with a memory 32 in which a display control program for performing the above control and the like, and a central control unit 30 connected to the memory 32 are provided.
- the central control unit 30 controls the control signal creation unit 16 and the interpolated video data creation unit 20 through the input control signal.
- FIG. 4 is a diagram illustrating how the display is magnified by the lens 70.
- Width indicates the width of the line band (the length of the display surface) that may be seen from the normal direction of the display surface 42.
- Width (jn) indicates the width of the line band (the length of the display surface) when the Width (in) is displayed via the lens 70.
- Width (jn) / Width (in) is the enlargement ratio rn for the line band. In other words, a ratio that an image is enlarged by being transmitted through the lens 70 as an optical unit is obtained.
- the magnification rn varies depending on how the lens 70 is bent. Therefore, as shown in FIG. 1 described above, the enlargement ratio rn is different for each line from the boundary between the plane range 70a and the curved range 70b to the end side 44.
- the extended width I of the line band by the lens 70 is represented by Width (jn) -Width (in).
- the expansion width I in the entire area of the curved surface range 70b is a value obtained by adding the above-mentioned “Width (jn) ⁇ Width (in)” in the entire area as shown in FIG.
- f (x) in FIG. 4 is a function indicating the surface shape of the lens 70, and f ′ (x) indicates the inclination of f (x).
- f ′ (a) and f ′ (b) in FIG. 4 indicate the inclination of the surface of the lens 70 at the positions a and b, respectively.
- Video RAM Next, the capacity of the video RAM 24 will be described.
- Video data is stored in the video RAM 24.
- the video data includes original video data that is original video data and interpolated video data created in addition to the original video data. That is, the video RAM 24 is configured as a RAM for storing video data for up-converting video.
- the approximate capacity of the video RAM 24 necessary for storing the video data can be calculated based on the number of expansion lines added.
- the number of extended lines to be added can be calculated by the following formula.
- Number of expansion lines added expansion width / pixel pitch (line pitch)
- the image is expanded to some extent by the lens diameter of the lens 70.
- the width of the expanded video is calculated as the expansion width, and the expansion width is divided by the pixel pitch length, the number of expansion lines to be added is obtained.
- the extended width is expressed from the viewpoint of the length of the display surface, the length of the display surface 42 facing the curved surface range 70b and the length of the display surface 42 facing the curved surface range 70b seen through the lens 70 are as follows. The difference.
- the liquid crystal display panel 40 having the display area 46 of 272 vertical lines and 480 horizontal lines is expanded by the convex lens, and the number of lines after the expansion is 320.
- the case is as follows.
- 52 lines which is the difference between 320 lines and 272 lines, is the number of extended lines added.
- the capacity of the video RAM 24 can be determined based on the added number of expansion lines.
- the video RAM 24 having a capacity corresponding to the number of bits calculated by 52 (number of extended lines) ⁇ 480 (number of horizontal lines) ⁇ 8 (number of gradation bits) ⁇ 3 (R ⁇ G ⁇ B) is required. Recognize.
- the interpolated video data is video data created to fill a portion expanded by the lens 70.
- the interpolated video data is data created in a pseudo manner to arrange the video data in a line band of approximately the same extent with respect to the display area expanded by the action of the lens 70.
- FIG. 6 is a diagram showing original video data and interpolated video data.
- the left side column of FIG. 6 shows the original video data, and the right side column shows the original video data and the interpolated video data.
- FIG. 7 is a diagram showing an outline of creation of interpolation video data.
- a floor located between the gray levels of the original video data of the pixels belonging to the adjacent line and adjacent to each other.
- interpolation video data is created as video data having a key.
- the pixel adjacent in the direction in which the curved surface of the curved surface range 70b is curved means that the curved surface of the curved surface range 70b of the lens 70 is viewed from the side when the curved surface starts (the planar range 70a and the curved surface range 70b). This means that the pixel is adjacent along the direction from the boundary to the end of the curve.
- the horizontal axis indicates the pixel coordinates
- the vertical axis indicates the brightness (gradation) of the video data. That is, the pixel A whose coordinate is x and gradation is y can be expressed as (Ax, Ay).
- FIG. 7 shows an outline in the case of obtaining interpolated video data having an interpolation number x between the pixel A (Ax, Ay) and the pixel B (Bx, By).
- the interpolated video data y is expressed as follows.
- nth interpolated video data is expressed as follows.
- the interpolated video data is a video having a gradation that divides the gradation between the original video data of the adjacent pixels equally by the number obtained by adding 1 to the number of interpolations. Created as data.
- the gradation of the created interpolated video data is calculated from the gray level of the original video data of the one adjacent pixel. The value gradually increases or decreases step by step until the gradation of the original video data of the other pixel.
- the interpolated video data obtained by the above equation is stored in the video RAM described above.
- the first method is This is a method of adding the number of interpolations every time Width (jn) ⁇ Width (in) ⁇ 1.
- FIG. 8 is a diagram for explaining how to obtain the first interpolation number.
- the curved surface range 70b is the interpolated video data creation range 80, which is the range in which the interpolated video data is created.
- the display of the video data obtained by combining the original video data and the interpolated video data can be seen through the optical unit. It is easy to make the density with respect to the length of the display surface of the part the same as the density of the original video data with respect to the length of the display surface of the display part.
- the capacity of the video RAM 24 can be suppressed.
- Method 2 is a method of creating interpolated video data with the same number of interpolations (step number).
- the number of interpolated video data created differs from line to line.
- the number of interpolated video data created between each line is uniform.
- the number of the interpolated video data to be created (the above-mentioned uniform number) is determined based on the ratio at which the video from the pixels is enlarged by passing through the curved surface range 70b of the lens 70.
- the interpolated video data is created not only in the portion corresponding to the curved surface range 70b of the display area 46 but also in the portion corresponding to the planar range 70a is exemplified. That is, as shown in FIG. 9 showing the range in which the interpolated video data is created, the interpolated video data is created in the entire range 70c including the plane range 70a and the curved surface range 70b of the lens 70. That is, the entire range 70c is the interpolation video data creation range 80.
- FIG. 10 shows an example of creating interpolated video data by the above method 2.
- the same amount of interpolated video data is created across the entire display area 46 between each line.
- a lens whose maximum enlargement ratio approximates an integer of 2 is used as the lens 70, and the number of interpolations is uniformly 2 in the entire range of the display area 46.
- the number of the interpolated video data is two based on the ratio of the video from the pixel expanding by passing through the curved surface range 70b of the lens 70.
- the display area 46 shown on the left side of FIG. 10 illustrates the display area 46 having a pixel number of 640 ⁇ 150. In this case, the number of lines of the original video data is 150.
- the sum of the original video data and the interpolated video data is 448.
- the display area 46 having 448 lines is the display area 46 shown on the right side of FIG.
- interpolation video data is created between lines in the row direction.
- no interpolated video data is created between lines in the column direction.
- interpolated video data can be created without performing complicated calculations. Therefore, the interpolated video data can be created with a simple arithmetic circuit.
- the capacity of the video RAM 24 can be suppressed.
- the interpolated video data can be created in a range covering the entire range of the curved surface range 70b and a partial range of the planar range 70a.
- FIGS. 11 and 12 are diagrams showing a range in which the interpolated video data is created.
- the interpolated video data is created in the curved surface range 70b and the additional plane range 72 that is one of the plane ranges 70a and continues from the curved range 70b. That is, a range obtained by combining the curved surface range 70b and the additional plane range 72 (boundary vicinity range) is an interpolation video data creation range 80.
- the size of the additional plane area 72 is not particularly limited.
- the size of the additional plane range 72 can be about half the size of the curved range 70b.
- FIG. 12 shows a display area 64 having 640 ⁇ 480 pixels.
- the size of the additional plane range 72 is such that the number of horizontal lines in the range is about 25. can do.
- the size of the additional plane range 72 is not limited to this size.
- the additional plane range 72 may be set so as to include more lines.
- the method for obtaining the number of interpolations is not particularly limited, and for example, any one of the method 1 and the method 2 can be used.
- selection of thinned video data means that video data used for actual display is selected from the original video data and the interpolated video data described above with reference to FIG. Then, by selecting the thinned-out video data, it is possible to suppress the expanded display caused by the lens 70. This will be specifically described below.
- the required number of video data for display is selected from all the video data including the original video data and the interpolated video data.
- the number necessary for the display means the number of lines.
- the thinned video data is selected so that the selected thinned video data is positioned at approximately equal intervals.
- arranging the original video data and the interpolated video data in order means that the original video data is arranged in the order of the corresponding pixels, and the interpolated video data has a continuous tone between the original video data of the corresponding pixels. It means to line up as you do.
- FIG. 13 is a diagram for explaining selection of thinned-out video data.
- the left column indicates video data (video data group) obtained by combining the original video data and the interpolated video data, and the right column indicates thinning-out. Video data is shown.
- the interpolated video data shown in FIG. 13 is the same data as the interpolated video data described above with reference to FIG. That is, the interpolated video data creation range 80 in the interpolated video data shown in FIG. 13 is a curved surface range 70b. Then, the interpolated video is generated based on the method 1 so that the number of interpolated video data created between adjacent lines increases from the boundary between the plane range 70a and the curved surface range 70b toward the end side 44. Data has been created.
- the number of video data necessary for display that is, the same number of video data as the number of lines is selected from the original video data and the interpolated video data. At that time, in the state where the original video data and the interpolated video data are arranged in order, the selected video data is selected so as to have substantially equal intervals.
- the video data for display conforming to the lens width and the line band (pixel pitch) is thinned out from the video data stored in the video RAM 24.
- the lens width is the length of the portion where the lens 70 has a curvature, and corresponds to the length of the curved surface range 70b.
- FIG. 14 is a diagram illustrating the relationship between the lens diameter and the lens width in the lens 70.
- the horizontal axis indicates the lens width, which is the length of the portion where the lens 70 has a curvature, and the vertical axis indicates the lens diameter.
- FIG. 14 illustrates a lens 70 in which the thickness of the lens 70 (lens thickness) is 6 mm and the lens width is 6.5 mm.
- the relationship between the lens diameter and the lens width is the relationship shown in the equation shown in FIG.
- the lens width of the lens 70 shown in the middle row in FIG. 13 is 6.5 mm.
- the curved surface range 70b in FIG. 13 is 6.5 mm.
- the curved surface range 70b is the interpolation video data creation range 80. Therefore, the interpolation video data creation range 80 is also 6.5 mm.
- the selection of the thinned video data in the curved surface range 70b has been described on the assumption that the interpolated video data is created only in the curved surface range 70b.
- the interpolated video data described in the method 2 for obtaining the number of interpolations is created not only in the portion corresponding to the curved surface range 70b of the display area 46 but also in the portion corresponding to the planar range 70a. Then, the selection of the thinned video data can be performed only in the curved surface range 70b, not in the planar range 70a. That is, in the plane range 70a, although the interpolated video data is created, only the original video data can be used for display as it is.
- the interpolated video data can be easily calculated, and good display can be realized in the planar range 70a and the curved range 70b.
- FIG. 15 is a diagram showing a schematic configuration of the liquid crystal display device 10 provided with a path changeover switch.
- all the input video data is supplied to the source driver 12 via the video RAM 24.
- the input video data is temporarily stored in the video RAM 24 and then supplied from the video RAM 24 to the source driver 12, or without the video RAM 24.
- the source driver 12 may be supplied. This will be specifically described below.
- the liquid crystal display device 10 shown in FIG. 15 includes a path changeover switch 26 in addition to the liquid crystal display panel 40, the source driver 12, the gate driver 14, the control signal generation circuit unit 16, and the data operation circuit unit 18. It has been.
- the path changeover switch 26 is provided in front of the video RAM 24, that is, on the input side of the video RAM 24, and is controlled by the central control unit 30. By switching the path changeover switch 26, it is possible to switch whether the input video data is sent to the video processing path or the video non-processing path.
- the video processing path means a path for creating the interpolated video data based on input video data (original video data).
- the video non-processing path is a path for supplying the input video data as it is to the source driver 12 without creating the interpolated video data.
- the input video data is first input to the interpolated video data creation unit 20 provided on the input side of the video RAM 24.
- the interpolated video data creating unit 20 creates interpolated video data using the input video data as original video data.
- the original video data and the interpolated video data are stored in the video RAM 24.
- the control signal generation circuit unit 16 as a control unit, after selecting the thinned video data described above, the video data is supplied from the video RAM 24 to the source driver 12.
- the input video data is directly supplied to the source driver 12 without going through the video RAM 24.
- the capacity of the video RAM 24 can be minimized by switching the path changeover switch 26 as follows.
- the path changeover switch 26 is switched so that the input video data is supplied to the video processing path.
- the path switch 26 is switched so that the input video data is supplied to the video non-processing path.
- the capacity of the video RAM 24 can be minimized by switching the path switch 26 to switch the route through which the input video data is supplied.
- the path switch 26 is switched by the control from the control signal generation circuit unit 16 based on the input control signal.
- the interpolated video data creation unit 20 can be provided on the input side of the path switch 26.
- the capacity of the video RAM 24 is changed by switching the path changeover switch 26 in the same manner as when the interpolated video data creation unit 20 shown in FIG. 15 is provided on the output side of the path changeover switch 26. Can be minimized.
- FIG. 16 is a diagram showing a schematic configuration of the liquid crystal display device 10 of the present embodiment.
- the liquid crystal display device 10 of the present embodiment is different from the liquid crystal display device 10 of the first embodiment described with reference to FIGS. 3 and 15 in that the video RAM 24 is not provided.
- the liquid crystal display device 10 according to the present embodiment is provided with a data arithmetic circuit unit 18. This will be specifically described below.
- the liquid crystal display device 10 of the present embodiment is provided with a data arithmetic circuit unit 18 that supplies a video signal to the source driver 12.
- the data operation circuit unit 18 is provided with an interpolation video data creation unit 20 and an original video data / interpolation video data selection unit 22 controlled by the central control unit 30.
- the data operation circuit unit 18 is connected to the control signal generation circuit unit 16.
- the data operation circuit unit 18 is controlled by the control signal generation circuit unit 16 functioning as a control unit based on an input control signal input to the control signal generation circuit unit 16.
- the interpolated video data creation unit 20 provided in the data operation circuit unit 18 has the same function as the interpolated video data creation unit 20 in the liquid crystal display device 10 of the first embodiment. That is, the interpolated video data is created based on the input video data (original video data) that is input. Then, from the created interpolated video data and the original video data, the original video data / interpolated video data selection unit 22 also provided in the data calculation circuit unit 18 selects the thinned video data described above. .
- the selected video data is supplied to the source driver 12.
- interpolation data is created by the data arithmetic circuit unit 18 and thinned video data is selected. Therefore, it is not necessary to provide the video RAM 24 for storing the interpolated video data. Therefore, the configuration of the liquid crystal display device 10 can be simplified.
- the number of preferable interpolations may not be an integer according to the number of enlargement ratio.
- the first decimal place is rounded off to make the value an integer, or the deficient interpolated video data can be obtained separately as appropriate.
- the thinned video data there may be a case where the thinned video data cannot be selected at equal intervals according to the number of original video data and interpolated video data. In that case, the thinned video data can be selected at substantially equal intervals so as to be closer to the equal intervals as appropriate.
- the interpolated video data includes a difference in gradation between the original video data of a set of the adjacent pixels, and the interpolated video data generated for the adjacent pixels. It has a gradation that is equally divided by the number obtained by adding 1 to the number.
- the gradation of the interpolated video data to be created has a value that equally divides the gradation difference between the original video data of the corresponding adjacent pixels.
- the selected video data is likely to be video data with continuous gradation, and more natural and easy display with reduced expansion display is facilitated.
- the number of the interpolated video data is generated in accordance with a ratio at which the video is enlarged, so that the optical data of the video data combining the original video data and the interpolated video data is generated.
- the density with respect to the length of the display surface of the display unit seen through the unit is approximately the same as the density of the original video data with respect to the length of the display surface of the display unit.
- the video data when the density of the video data including the original video data and the interpolated video data with respect to the length of the display surface of the display unit seen through the optical unit does not pass through the optical unit. Is almost equal to the density of.
- the number of the interpolated image data created is determined by dividing the display surface in the direction of the curved surface range from the boundary between the planar range and the curved surface range of the lens.
- stretching the difference between the length of the segment and the length of the segmented display surface seen through the optical unit is obtained by increasing by one every time the pixel is increased by one pitch. It is characterized by the number.
- the number of the interpolated video data created for the adjacent pixels is determined based on a ratio that the video from the pixels is enlarged by passing through the curved surface range of the optical unit. It is characterized by a uniform number.
- the display device of the present invention is characterized in that the interpolated video data is created only for the pixels adjacent to each other in a range facing the curved surface range.
- the interpolated video data is created only in the curved surface range where the video is easily stretched. For this reason, the number of interpolated video data to be created can be reduced, and expansion display can be suppressed more easily.
- the display device of the present invention is characterized in that the interpolated video data is created for the pixels adjacent to each other in a range facing the curved surface range and a boundary vicinity range between the curved surface range and the planar range. To do.
- the interpolated video data is also created in the boundary vicinity range between the curved surface range and the planar range.
- the display device of the present invention is characterized in that the interpolated video data is created in the entire range of the display surface of the display unit.
- the display device of the present invention is provided with a video RAM for storing the original video data and the interpolated video data, and the original video data and the interpolated video data stored in the video RAM are stored.
- a control unit for selecting video data used for display is provided.
- the configuration of the control unit can be simplified. Also, by providing the video RAM, it is possible to perform highly versatile control even when the lens diameter to be used is changed.
- the capacity of the video RAM is a difference between a length of the display surface facing the curved surface range and a length of the display surface facing the curved surface range seen through the optical unit. It is determined based on a numerical value obtained by dividing by the pixel pitch.
- the capacity of the video RAM is determined in accordance with the expansion of display through the optical unit. Therefore, it becomes easy to determine the minimum necessary capacity of the video RAM.
- the display control program of the present invention is characterized by causing a computer to function as an interpolated video data creation unit and a control unit in the display device.
- the recording medium of the present invention is a computer-readable recording medium storing the display control program.
- the display device of the present invention can suppress extended display with a simple configuration, it can be suitably used for a portable terminal having a display unit such as a game terminal.
- Liquid crystal display device (display device) 12 Source Driver 14 Gate Driver 16 Control Signal Generation Circuit Unit (Control Unit) 18 Data operation circuit unit 20 Interpolated video data creation unit 22 Original video data / interpolated video data selection unit (control unit) 24 Video RAM 26 path switch 30 central control unit 32 memory 40 liquid crystal display panel (display unit) 42 Display surface 44 Edge side 46 Display area 48 Non-display area 70 Lens (optical part) 70a Plane range 70b Curved range 70c Total range 72 Additional plane range 80 Interpolated video data creation range
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Abstract
Description
例えば、下記特許文献1には、ディスプレイの表示面に凸レンズを設けるとともに、その凸レンズが湾曲する部分に対応するディスプレイの画素ピッチを短くする技術が開示されている。
また、下記特許文献2には、複数台並べられた表示装置の表示面に凸レンズを設けるとともに、拡大された虚像が表示されるように、その凸レンズの焦点距離を選ぶ技術が開示されている。
以下、本発明の第1の実施形態について説明する。
図1は本実施の形態の液晶表示装置をその表示面から見た場合の概略構成を示しており、図2は、図1のA-A線断面図である。
つぎに、本実施の形態の液晶表示装置10の全体構成について、図3に基づいて説明する。図3は、上記液晶表示装置10の概略構成を示す図である。
以下、順に、本実施の形態の液晶表示装置における表示方法について説明する。
図4は、レンズ70による表示の拡大の様子を示す図である。
つぎに、上記レンズ70によるライン帯の拡張幅について説明する。
つぎに、上記映像用RAM24の容量について説明する。この映像用RAM24には、映像データが記憶されるが、その映像データには、元々の映像データである元映像データと、この元映像データに加えて作成される補間映像データとが含まれる。すなわち、上記映像用RAM24は、映像をアップコンバートするための映像データを記憶するためのRAMとして構成されている。
液晶表示パネル40に対して、縦ライン方向に曲がっている凸レンズを上記レンズ70として用いた場合、レンズ70のレンズ径により、映像がある程度拡張される。そして、その拡張した映像分の幅を拡張幅として算出し、その拡張幅を画素ピッチ長で割ると、追加される拡張ライン数が求められる。なお上記拡張幅を表示面の長さの観点から表現すると、上記曲面範囲70bに面する表示面42の長さと、上記レンズ70を介して見える上記曲面範囲70bに面する表示面42の長さとの差となる。
52(拡張ライン数)×480(横ライン数)×8(階調ビット数)×3(R・G・B)で算出されるビット数分の容量を有する映像用RAM24が必要であることがわかる。
つぎに、補間映像データについて説明する。ここで補間映像データとは、上記レンズ70により拡張された部分をうめるために作成される映像データである。
そして、n番目の補間映像データは以下のように表される。
以上のように、上記補間映像データは、上記隣接する各画素の各元映像データ間の階調を差異を、上記補間数に1を加えた数で等分するような階調を有した映像データとして作成される。そして、上記補間映像データが一組の隣接する画素間に複数個作成される場合には、作成された補間映像データの階調は、上記隣接する一方の画素の元映像データの階調から、他方の画素の元映像データの階調のまでの間で、段階的に連続して増加若しくは減少する値となっている。
ここで上記補間映像データを作成する際の補間数の求め方について説明する。補間数の求め方には種々の方法が考えられる。
まず、第1の方法は、
Width(jn)-Width(in)≧1になる毎に補間数を追加する方法である。
この方法2は、一律に同じ補間数(ステップ数)で補間映像データを作成する方法である。
(150-1)×2=298となる。
つぎに、補間映像データを作成する範囲について説明する。この補間映像データを作成する範囲には、種々の範囲が考えられる。
上記方法1では、表示領域46における、平面範囲70aと曲面範囲70bとの境界から、液晶表示パネル40の端辺44の範囲に補間映像データが作成される例を示した。
また、上記方法2では、表示領域46の全範囲において補間映像データが作成される例を示した。
補間映像データを作成する範囲については、上記2つの例の他にも種々考えられる。
つぎに間引きデータの選出について説明する。ここで間引き映像データの選出とは、先に図6に基づいて説明した元映像データと補間映像データとの中から、実際の表示に用いられる映像データを選出することを意味する。そして、この間引き映像データの選出により、レンズ70に起因する伸張表示を抑制することができる。以下、具体的に説明する。
つぎに、上記映像用RAM24の異なる構成について図15に基づいて説明する。図15は、パス切替えスイッチが設けられた液晶表示装置10の概略構成を示す図である。
本発明の液晶表示装置10に関する他の実施形態について、図16に基づいて説明すれば、以下のとおりである。図16は、本実施の形態の液晶表示装置10の概略構成を示す図である。
12 ソースドライバ
14 ゲートドライバ
16 制御信号作成回路部(制御部)
18 データ演算回路部
20 補間映像データ作成部
22 元映像データ・補間映像データ選択部(制御部)
24 映像用RAM
26 パス切替えスイッチ
30 中央制御部
32 メモリ
40 液晶表示パネル(表示部)
42 表示面
44 端辺
46 表示領域
48 非表示領域
70 レンズ(光学部)
70a 平面範囲
70b 曲面範囲
70c 全範囲
72 追加平面範囲
80 補間映像データ作成範囲
Claims (16)
- 表示部と、上記表示部の表示面を覆う光学部とを備える表示装置であって、
上記表示部は、マトリクス状に配置された画素を備えており、
上記光学部は、その表面が平面である平面範囲と、その表面が凸状の曲面である曲面範囲とを有するレンズを備えており、
上記各画素に対応する映像データが元映像データであり、
上記曲面範囲に面する範囲の画素における、上記曲面の湾曲始端から湾曲終端に向かう方向に沿って隣接する画素について、上記隣接する各画素の各元映像データの階調の間の階調を有する映像データである補間映像データを作成する補間映像データ作成部を備えており、
上記元映像データを対応する画素の順に並べるとともに、上記補間映像データを、対応する画素の元映像データの間にその階調が連続するように並べた場合において、上記元映像データと上記補間映像データとを合わせた映像データの中から、略等間隔に画素の数だけの映像データを選択する制御部が備えられていることを特徴とする表示装置。 - 作成される上記補間映像データの個数は、上記画素からの映像が上記光学部の曲面範囲を透過することで拡大する比率に基づいて定められることを特徴とする請求項1に記載の表示装置。
- 上記補間映像データは、複数の上記各画素において、当該画素からの映像が上記光学部の曲面範囲を透過することで拡大する比率に応じて各々定められた個数作成されることを特徴とする請求項1又は2に記載の表示装置。
- 上記補間映像データは、一組の上記隣接する各画素の上記各元映像データ間の階調の差異を、当該隣接する画素について作成された上記補間映像データの個数に1を加えた数で等分する階調を有していることを特徴とする請求項1から3のいずれか1項に記載の表示装置。
- 上記補間映像データが、上記映像が拡大する比率に応じた個数作成されることで、
上記元映像データと上記補間映像データとを合わせた映像データの、上記光学部を介して見える上記表示部の表示面の長さに対する密度が、
上記元映像データの、上記表示部の表示面の長さに対する密度と同程度になることを特徴とする請求項3に記載の表示装置。 - 上記補間映像データが作成される個数は、
上記レンズの上記平面範囲と上記曲面範囲との境界から、上記曲面範囲の方向に上記表示面を区分しながらその長さ延伸する場合に、上記区分の長さと、上記光学部を介して見える上記区分された表示面の長さとの差が、上記画素の1ピッチ分増加する毎に、1増加させることで求められた個数であること特徴とする請求項3に記載の表示装置。 - 上記隣接する画素について作成される上記補間映像データの個数が、
上記画素からの映像が上記光学部の曲面範囲を透過することで拡大する比率に基づいて定められた一律の個数であることを特徴とする請求項2に記載の表示装置。 - 上記補間映像データが、上記曲面範囲に面する範囲で隣接する上記画素についてのみ作成されていることを特徴とする請求項1から7のいずれか1項に記載の表示装置。
- 補間映像データは、上記曲面範囲に面する範囲、及び、上記曲面範囲と上記平面範囲との境界近傍範囲において隣接する上記画素について作成されていることを特徴とする請求項1から7のいずれか1項に記載の表示装置。
- 補間映像データは、上記表示部の表示面の全範囲において作成されていることを特徴とする請求項1から7のいずれか1項に記載の表示装置。
- 上記元映像データと上記補間映像データとを記憶する映像用RAMが設けられており、
上記映像用RAMに記憶された、上記元映像データ及び上記補間映像データの中から、表示に用いられる映像データを選択するための制御部が設けられていることを特徴とする請求項1から10のいずれか1項に記載の表示装置。 - 上記映像用RAMの容量が、上記曲面範囲に面する表示面の長さと、上記光学部を介して見える上記曲面範囲に面する表示面の長さとの差を、上記画素のピッチで除して求められた数値に基づいて定められていることを特徴とする請求項11に記載の表示装置。
- 表示部と、上記表示部の表示面を覆う光学部とを備える表示装置の表示方法であって、
上記表示部は、マトリクス状に配置された画素を備えており、
上記光学部は、その表面が平面である平面範囲と、その表面が凸状の曲面である曲面範囲とを有するレンズを備えており、
上記各画素に本来対応する映像データが元映像データであり、
上記曲面範囲に面する範囲の画素における、上記曲面の湾曲始端から湾曲終端に向かう方向に沿って隣接する画素について、上記隣接する各々画素の元映像データの階調の間の階調を有する映像データである補間映像データを作成し、
上記元映像データを対応する画素の順に並べるとともに、上記補間映像データを、対応する画素の元映像データの間にその階調が連続するように並べた場合において、上記元映像データと上記補間映像データとを合わせた映像データの中から、等間隔に画素の数だけの映像データを選択し、上記選択した映像データを表示することを特徴とする表示方法。 - 上記補間映像データは、上記画素からの映像が上記光学部の曲面範囲を透過することで拡大する比率に応じた個数作成されることを特徴とする請求項13に記載の表示方法。
- 請求項1に記載の表示装置における補間映像データ作成部および制御部として、コンピュータを機能させることを特徴とする表示制御プログラム。
- 請求項15に記載の表示制御プログラムを格納したコンピュータ読取可能な記録媒体。
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WO2008149449A1 (ja) * | 2007-06-07 | 2008-12-11 | Telesystems Co., Ltd. | マルチディスプレイ装置 |
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US7404645B2 (en) * | 2005-06-20 | 2008-07-29 | Digital Display Innovations, Llc | Image and light source modulation for a digital display system |
JP2009015025A (ja) * | 2007-07-05 | 2009-01-22 | Hitachi Ltd | 画像信号処理装置および画像信号処理方法 |
CN101350187B (zh) * | 2007-07-16 | 2010-08-25 | 联詠科技股份有限公司 | 图像数据处理方法与图像显示装置 |
US20120249622A1 (en) * | 2009-12-02 | 2012-10-04 | Sharp Kabushiki Kaisha | Display device and display method |
-
2009
- 2009-11-17 US US12/998,894 patent/US20110249021A1/en not_active Abandoned
- 2009-11-17 WO PCT/JP2009/006164 patent/WO2010122618A1/ja active Application Filing
- 2009-11-17 CN CN2009801515017A patent/CN102257557A/zh active Pending
Patent Citations (3)
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JP2000180964A (ja) * | 1998-12-21 | 2000-06-30 | Nippon Hoso Kyokai <Nhk> | マルチ投射型スクリーン |
JP2004524551A (ja) * | 2000-11-27 | 2004-08-12 | シームレス ディスプレイ リミテッド | ビジュアル・ディスプレイスクリーン装置 |
WO2008149449A1 (ja) * | 2007-06-07 | 2008-12-11 | Telesystems Co., Ltd. | マルチディスプレイ装置 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011067996A1 (ja) * | 2009-12-02 | 2011-06-09 | シャープ株式会社 | 表示装置、及び表示方法 |
JP2012185797A (ja) * | 2011-02-15 | 2012-09-27 | Toshiba Corp | 電子機器 |
US8867200B2 (en) | 2011-02-15 | 2014-10-21 | Kabushiki Kaisha Toshiba | Electronic apparatus |
WO2014050265A1 (ja) * | 2012-09-25 | 2014-04-03 | シャープ株式会社 | 表示装置及び表示方法 |
Also Published As
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US20110249021A1 (en) | 2011-10-13 |
CN102257557A (zh) | 2011-11-23 |
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