TWI856311B - Image displaying system and image processing method thereof - Google Patents

Abstract

A image displaying system and image processing method thereof are provided. The image displaying system includes an image processing circuit, an image distributor circuit and a plurality of display modules. The image processing circuit receives an input of a rectangular image source, and scales the rectangular image source to generate a renew image source. The image distributor circuit cuts the renew image source to generate a plurality of sub-image signals. The display modules each have a non-rectangular display area, and each drive the non-rectangular display area to display based on a corresponding one of the sub-image signals.

Description

Image display system and image processing method thereof

The present invention relates to a display technology, and in particular to an image display system and an image processing method thereof.

Generally speaking, it is easier to process and cut display panels with a rectangular frame, so most display panels are rectangular. However, with the development of semiconductor technology, display panels have gradually developed towards irregular shapes to make the use of display panels more diverse. However, in irregular display panels, the original data layout method will cause display abnormality, so it is necessary to update the data layout method of irregular display panels.

The present invention provides an image display system and an image processing method thereof, which resizes and positions rectangular images so as to rearrange the original rectangular images into the actual display area of each display module to avoid discontinuity in the displayed images.

The image display system of the present invention includes an image processing circuit, an image distribution circuit and a plurality of display modules. The image processing circuit receives an input of a rectangular image signal source and scales the rectangular image signal source to generate a re-image signal source. The image distribution circuit cuts the re-image signal source to generate a plurality of sub-image signals. The display modules each have a non-rectangular display area and each drive the non-rectangular display area to display based on a corresponding one of the sub-image signals.

The image processing method of the image display system of the present invention comprises the following steps: receiving a rectangular image signal source through an image processing circuit of the image display system; scaling the rectangular image signal source through the image processing circuit to generate a re-image signal source; cutting the re-image signal source through an image distribution circuit of the image display system to generate a plurality of sub-image signals, so as to provide them to a plurality of display modules of the image display system.

Based on the above, in the touch display panel and sensing method of the embodiment of the present invention, after being processed by the image processing circuit, the display data of the rectangular image source is scaled and positioned to correspond to the non-rectangular display area of the display module, so the display module will display a non-rectangular but continuous image to improve the viewing quality.

In order to make the above features and advantages of the present invention more clearly understood, embodiments are given below and described in detail with reference to the accompanying drawings.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by ordinary technicians in the field to which the present invention belongs. It will be further understood that those terms as defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and the present invention, and will not be interpreted as an idealized or overly formal meaning unless expressly defined as such in this document.

It should be understood that although the terms "first", "second", "third", etc. may be used herein to describe various elements, components, regions, layers and/or parts, these elements, components, regions, and/or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, the "first element", "component", "region", "layer" or "part" discussed below can be referred to as a second element, component, region, layer or part without departing from the teachings of this article.

The terms used herein are for the purpose of describing specific embodiments only and are not restrictive. As used herein, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms, including "at least one". " or "means" and/or". As used herein, the terms "and/or" include any and all combinations of one or more of the relevant listed items. It should also be understood that when used in this specification, the terms "include" and/or "include" specify the presence and/or parts of the features, regions, entireties, steps, operations, elements, components and/or parts, but do not exclude the presence or addition of one or more other features, regions, entireties, steps, operations, elements, components and/or combinations thereof.

FIG1 is a system schematic diagram of an image display system according to a first embodiment of the present invention. Referring to FIG1 , in this embodiment, the image display system 100 includes an image processing circuit 110, a data search circuit 120, an image distribution circuit 130, and a plurality of display modules 140_1 to 140_n, wherein n is a derivative number, and the display modules 140_1 to 140_n each have a non-rectangular display area, such as a circle, a triangle, a rhombus, an iris, a trapezoid, a pentagon, etc. The image processing circuit 110 is coupled between the data search circuit 120 and the image distribution circuit 130, and the image distribution circuit 130 is coupled to the plurality of display modules 140_1 to 140_n.

The data search circuit 120 receives the board shape information IBS associated with the display modules 140_1~140_n, and provides a plurality of image scaling values SR, a plurality of valid data amounts Vx, and a plurality of invalid data amounts Dx based on the board shape information IBS. The image processing circuit 110 receives the input of the rectangular image signal source RIS and the image scaling value SR, the valid data amount Vx, and the invalid data amount Dx from the data search circuit 120, and scales the rectangular image signal source RIS based on the image scaling value SR, and locates the scaled rectangular image signal source RIS based on the valid data amount Vx and the invalid data amount Dx, thereby generating a re-image signal source RPIS. The re-image signal source RPIS is also rectangular image data, but the red data XDr, green data XDg and blue data XDb contained in the rectangular image signal source RIS are compressed into a partial data area of the re-image signal source RPIS through calculation.

The image distribution circuit 130 cuts the re-image signal source RPIS to generate a plurality of sub-image signals XDsub1-XDsubn, and transmits them to the display modules 140_1-140_n respectively (i.e., distributes the sub-image signals XDsub1-XDsubn to the display modules 140_1-140_n). After receiving a corresponding one of the sub-image signals XDsub1-XDsubn, the display modules 140_1-140_n drive the non-rectangular display area to display based on the corresponding sub-image signal XDsub1-XDsubn.

According to the above, after being processed by the image processing circuit 110, the display data of the rectangular image source RIS (i.e., the red data XDr, the green data XDg, and the blue data XDb) are scaled and positioned to correspond to the non-rectangular display areas of the display modules 140_1~140_n, so the display modules 140_1~140_n will display non-rectangular but continuous images to improve the viewing quality.

In the embodiment of the present invention, the image processing circuit 110 includes a scaling block 111 and a positioning block 113. The scaling block 111 is coupled to the data search circuit 120, and receives a rectangular image signal source RIS and an image scaling value SR, and scales a plurality of image columns of the rectangular image signal source RIS based on the image scaling values SR to generate a scaled image signal source SRIS. The positioning block 113 is coupled to the scaling block 111 and the data search circuit 120, and receives the scaled image signal source SRIS, a valid data amount Vx, and an invalid data amount Dx, and positions a plurality of scaled image columns of the scaled image signal source SRIS based on the valid data amounts Vx and the invalid data amounts Dx to generate a re-image signal source RPIS.

In the embodiment of the present invention, the scaling block 111 scales the image columns of the rectangular image source RIS based on one of equal-proportional sampling, Gaussian sampling, linear interpolation and bilinear interpolation. Specifically, the functions used by the equal-proportional sampling include: p(i _t )=p(i _ot ) and i _ot =round(i _t /SR), where p()=pixel function, i _t =target x-axis, i _ot =repositioned x-axis, round()=rounding function, SR=scaling ratio; the functions used by the Gaussian sampling include: , p(i _t )=p(i _ot )×G(x) and i _ot =round(i _t /SR), where G(x)=Gaussian kernel of size x, σ=standard deviation, μ=central axis, ×=convolution operator; the functions used in linear interpolation include: ,i _ot =(i _t /SR), as well as Where floor()=function of rounding down, ceil()=function of rounding up; the functions used in the bilinear interpolation method include: dy1=y'-y1, dy2=y2-y1, dx1=x'-x1, dx2=x2-x1, Px1=P1+dx(P2-P1), Px2=P3+dx(P4-P3), P'=Px1+dy(Px2-Px1), where y1~y4=y-axis of 4 adjacent pixels, x1~x4=x-axis of 4 adjacent pixels, y'=y-axis of target pixel, x'=x-axis of target pixel, P1~P4 are pixel values of 4 adjacent pixels, and P' is pixel value of target pixel. In the embodiment of the present invention, the standard deviation σ can be 1, and the size x of Gaussian kernel can be 3×1.

In the embodiment of the present invention, the positioning block 113 determines a data point distribution based on the valid data amounts Vx and the invalid data amounts Dx, and positions the scaled image rows of the scaled image signal source SRIS based on the data point distribution.

In the embodiment of the present invention, the data search circuit 120 includes a scaling ratio lookup table 121 and a valid data and invalid data lookup table 123. The valid data and invalid data lookup table 123 receives the board shape information IBS to sequentially provide the valid data amounts Vx and the invalid data amounts Dx. The scaling ratio lookup table 121 receives the board shape information IBS to provide the image scaling values SR.

FIG2 is a schematic diagram of image processing of an image display system according to an embodiment of the present invention. Referring to FIG1 and FIG2, after receiving a rectangular image signal source RIS, a scaling block 111 scales the rectangular image signal source RIS to generate a non-rectangular scaled image signal source SRIS. Then, a positioning block 113 determines a data point distribution DDP based on the valid data amounts _V1 ~ _V8 and the invalid data amounts _D1 ~ _D8 , and correspondingly fills the display data in the scaled image signal source SRIS into the position indicated by the valid data amounts _V1 ~ _V8 to generate a re-image signal source RPIS. The re-image signal source RPIS includes blocks corresponding to each display module 140_1~140_n (as shown by P1 and P2), and each corresponding block P1 and P2 includes a portion corresponding to the non-rectangular display area of each display module 140_1~140_n (as shown by the blank area) and a non-corresponding portion (as shown by the oblique line area). Finally, each block P1 and P2 is cut to become the sub-image signals XDsub1~XDsubn required by the display modules 140_1~140_n.

FIG3 is a schematic diagram of image processing of an image display system according to another embodiment of the present invention. Referring to FIG2 and FIG3, in this embodiment, different data point distributions DDPa are shown, that is, the effective data amount _V1 ~ _V5 of the data point distribution DDPa forms a cone in the corresponding block, so the corresponding portion (as shown in the blank space) of the corresponding blocks P1a and P2a corresponding to the non-rectangular display area of each display module 140_1~140_n will be a cone, which depends on the position of the data read by each display module 140_1~140_n. And each display module 140_1~140_n may include a storage element (not shown) to store the used sub-image signals XDsub1~XDsubn.

FIG4 is a system schematic diagram of an image display system according to another embodiment of the present invention. Referring to FIG1 and FIG4 , the image display system 200 is substantially the same as the image display system 100, and the difference lies in the transmission block 413 of the image processing circuit 410, the image distribution circuit 430, and the plurality of display modules 440_1~440_n, wherein the same or similar components use the same or similar reference numerals. In this embodiment, the transmission block 413 is coupled to the scaling block 111 and the data search circuit 120 to receive the scaled image signal source SRIS, the valid data amount Vx, and the invalid data amount Dx, and output the scaled image signal source SRIS as the re-image signal source RPIS, and output the valid data amount Vx and the invalid data amount Dx to the image distribution circuit 430.

The image distribution circuit 430 will also cut the re-image signal source RPIS to generate multiple sub-image signals XDsub1~XDsubn, and will also transmit the valid data amount Vx and the invalid data amount Dx to the display modules 440_1~440_n. Then, the display modules 440_1~440_n respectively locate the corresponding multiple scaled image rows of the sub-image signals XDsub1~XDsubn based on the valid data amount Vx and the invalid data amount Dx, and respectively drive the non-rectangular display area to display based on the located sub-image signals XDsub1~XDsubn. The positioning method can refer to the embodiments shown in Figures 2 and 3, which will not be repeated here.

FIG5 is a flow chart of an image processing method of an image display system according to an embodiment of the present invention. Referring to FIG5 , in this embodiment, the image processing method includes the following steps. In step S510, a rectangular image source is received via an image processing circuit of the image display system. In step S520, the rectangular image source is scaled via the image processing circuit to generate a re-image source. In step S530, the re-image source is cut via an image distribution circuit of the image display system to generate a plurality of sub-image signals, wherein the sub-image signals are provided to a plurality of display modules of the image display system. The order of steps S510, S520, and S530 is for illustration, and the embodiments of the present invention are not limited thereto. Furthermore, the details of steps S510, S520 and S530 can be found in the embodiments shown in FIGS. 1 to 4 and will not be described in detail herein.

In summary, in the touch display panel and sensing method of the embodiment of the present invention, after being processed by the image processing circuit, the display data of the rectangular image source is scaled and positioned to correspond to the non-rectangular display area of the display module, so that the display module will display a non-rectangular but continuous image to improve the viewing quality.

Although the present invention has been disclosed as above by the embodiments, they are not intended to limit the present invention. Any person with ordinary knowledge in the relevant technical field can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be defined by the scope of the attached patent application.

100, 400: Image display system 110, 410: Image processing circuit 111: Scaling block 113: Positioning block 120: Data search circuit 121: Scaling ratio lookup table 123: Valid data and invalid data lookup table 130, 430: Image distribution circuit 140_1~140_n, 440_1~440_n: Display module 413: Transmission block DDP, DDPa: Data point distribution Dx, D ₁ ~D ₈ : Invalid data amount IBS: Plate shape information P1, P2, P1a, P2a: Block RIS: Rectangular image source RPIS: Re-image source SR: Image scaling value Vx, V ₁ ~V ₈ : Effective data amount XDb: Blue data XDg: Green data XDr: Red data XDsub1~XDsubn: Sub-image signal S510, S520, S530: Step

FIG. 1 is a system schematic diagram of an image display system according to an embodiment of the present invention. FIG. 2 is a schematic diagram of image processing of an image display system according to an embodiment of the present invention. FIG. 3 is a schematic diagram of image processing of an image display system according to another embodiment of the present invention. FIG. 4 is a system schematic diagram of an image display system according to another embodiment of the present invention. FIG. 5 is a flow chart of an image processing method of an image display system according to an embodiment of the present invention.

100: Image display system

110: Image processing circuit

111: Zoom block

113: Positioning block

120: Data search circuit

121: Scaling ratio lookup table

123: Valid data and invalid data lookup table

130: Image distribution circuit

140_1~140_n: Display module

Dx: Invalid data amount

IBS: Plate shape information

RIS: Rectangular Image Source

RPIS: Re-image source

SR: Image scaling value

Vx: Valid data volume

XDb: Blue data

XDg: Green data

XDr: Red data

XDsub1~XDsubn: sub-image signal

Claims (15)

An image display system includes: an image processing circuit that receives an input of a rectangular image source and scales the rectangular image source row by row to generate a re-image source; an image distribution circuit that cuts the re-image source to generate multiple sub-image signals; and multiple display modules, each having a non-rectangular display area, and each driving the non-rectangular display area to display based on a corresponding one of the sub-image signals, wherein all display data of the rectangular image source is located in the area of the re-image source corresponding to the non-rectangular display areas of the display modules after scaling and positioning. An image display system as described in claim 1, wherein the image processing circuit includes: a scaling block, receiving the rectangular image source and a plurality of image scaling values, and scaling a plurality of image rows of the rectangular image source based on the image scaling values to generate a scaled image source; and a positioning block, receiving the scaled image source, a plurality of valid data amounts, and a plurality of invalid data amounts, and positioning a plurality of scaled image rows of the scaled image source based on the valid data amounts and the invalid data amounts to generate the re-image source. An image display system as described in claim 2, wherein the scaling block scales the image rows of the rectangular image source based on one of a proportional sampling method, a Gaussian sampling method, a linear interpolation method, and a bilinear interpolation method. An image display system as described in claim 2, wherein the positioning block determines a data point distribution based on the valid data amounts and the invalid data amounts, and positions the scaled image rows of the scaled image source based on the data point distribution. The image display system as described in claim 2 further includes a data search circuit that receives a board shape information associated with the display modules to provide the image scaling values, the valid data amounts, and the invalid data amounts based on the board shape information. The image display system as described in claim 5, wherein the data search circuit includes: a valid data and invalid data lookup table, which receives the board shape information to sequentially provide the valid data amounts and the invalid data amounts; and a scaling ratio lookup table, which receives the board shape information to provide the image scaling values. An image display system as described in claim 1, wherein the image processing circuit includes: a scaling block, receiving the rectangular image source and a plurality of image scaling values, and scaling a plurality of image rows of the rectangular image source based on the image scaling values to generate a scaled image source; and a transmission block, receiving the scaled image source, a plurality of valid data amounts and a plurality of invalid data amounts, and outputting the scaled image source as the re-image source, and outputting the valid data amounts and the invalid data amounts. An image display system as described in claim 7, wherein the display modules respectively locate multiple scaled image rows of the corresponding sub-image signals based on the valid data amounts and the invalid data amounts, and respectively drive the non-rectangular display area to display based on the located sub-image signals. An image processing method for an image display system includes: receiving a rectangular image signal source through an image processing circuit of the image display system; scaling the rectangular image signal source row by row through the image processing circuit to generate a re-image signal source; cutting the re-image signal source through an image distribution circuit of the image display system to generate a plurality of sub-image signals to provide to a plurality of display modules of the image display system, wherein all display data of the rectangular image signal source are located in the area of the re-image signal source corresponding to the plurality of non-rectangular display areas of the display modules after scaling. The image processing method as described in claim 9, wherein generating the re-image signal source comprises: scaling the plurality of image columns of the rectangular image signal source based on a plurality of image scaling values to generate a scaled image signal source; and positioning the plurality of scaled image columns of the scaled image signal source based on a plurality of valid data amounts and a plurality of invalid data amounts to generate the re-image signal source. The image processing method as described in claim 10, wherein the image rows of the rectangular image source are scaled based on one of an equal-proportional sampling method, a Gaussian sampling method, a linear interpolation method, and a bilinear interpolation method. The image processing method as described in claim 10, wherein locating the scaled image rows of the scaled image signal source based on the valid data amounts and the invalid data amounts includes: determining a data point distribution based on the valid data amounts and the invalid data amounts; and locating the scaled image rows of the scaled image signal source based on the data point distribution. The image processing method as described in claim 10 further includes: providing the image scaling values, the valid data amounts, and the invalid data amounts based on the board shape information associated with the display modules through a data search circuit of the image display system. The image processing method as described in claim 9, wherein generating the re-image signal source comprises: scaling multiple image columns of the rectangular image signal source based on multiple image scaling values to generate a scaled image signal source; and outputting the scaled image signal source as the re-image signal source. The image processing method as described in claim 14 further includes: positioning multiple scaled image rows of the sub-image signals based on multiple valid data amounts and multiple invalid data amounts by the display modules to drive the non-rectangular display areas of the display modules.

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