WO2014036719A1 - 用于过度驱动技术的画框资料缩减方法 - Google Patents

用于过度驱动技术的画框资料缩减方法 Download PDF

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Publication number
WO2014036719A1
WO2014036719A1 PCT/CN2012/081116 CN2012081116W WO2014036719A1 WO 2014036719 A1 WO2014036719 A1 WO 2014036719A1 CN 2012081116 W CN2012081116 W CN 2012081116W WO 2014036719 A1 WO2014036719 A1 WO 2014036719A1
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data
frame
avg
surrounding pixels
target pixel
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French (fr)
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陈宥烨
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Priority to US13/697,353 priority Critical patent/US9076408B2/en
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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
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0252—Improving the response speed
    • 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
    • G09G2340/02—Handling of images in compressed format, e.g. JPEG, MPEG
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/12—Frame memory handling

Definitions

  • the present invention relates to a liquid crystal display technology, and more particularly to a frame data reduction method for overdrive technology, which can effectively reduce the amount of memory used for overdrive technology.
  • Liquid crystal molecules have a limited response speed to signal voltage differences. Therefore, when a conventional liquid crystal display displays a moving image, the current image cannot be quickly switched to the next frame, and image sticking occurs.
  • the overdrive method is generally used (Over Driving), applying a voltage in a short time, so that the voltage is relatively high (or low) in the grayscale data voltage of the brightness of the next frame display to speed up the reaction speed of the liquid crystal molecules.
  • the overdrive technology used in current liquid crystal display devices requires additional memory to store the previous frame data so that the current frame data can be compared with the previous frame data to determine whether the picture is static or dynamic. Image, if it is a motion picture, then perform overdrive technology.
  • the additional memory can result in increased cost of driving the wafer. Therefore, if the amount of data of the frame material to be stored is effectively reduced, the cost of driving the wafer can be effectively saved.
  • the main object of the present invention is to provide a frame data reduction method for overdrive technology, which can effectively reduce the memory space required for storing frame data by performing pixel coding by combination of surrounding pixels.
  • the present invention provides a picture frame data reduction method for overdrive technology, comprising the following steps:
  • S03 selecting, from the plurality of data combinations provided by the surrounding pixels of the first frame data, a data combination that is close to the data of the target pixel as the target pixel of the encoding;
  • S05 compressing data of surrounding pixels of the first frame data, and storing the selection information of the target pixel in the memory.
  • the method further comprises the following steps:
  • the second frame data is equally divided into a target pixel and surrounding pixels
  • S11 Decompress and convert the data of the surrounding pixels of the compressed first frame data into the first frame to decode the surrounding data
  • the first frame decoding target data is restored from the first frame decoding surrounding data according to the selection information of the target pixel of the first frame data.
  • the method further comprises the following steps:
  • step S02 the first frame material is divided into a target pixel and a surrounding pixel according to a predetermined number of rows and column number reference information.
  • the surrounding pixels of the first frame material are 8 pixels surrounding the target pixel; wherein the top left, the top, the upper right, the right, the lower right, the lower left, and the lower left of the target pixel are The order of the left side numbers the 8 pixels to 1 to 8; wherein the data combination provided by the 8 surrounding pixels includes D(1), D(2)...D(8), Avg (1 ⁇ 8), Avg(2,6,4,8), Avg(4,8), Avg(2,6), Avg(1,5), Avg (3,7), Avg(1, 2,3), Avg (3,4,5), Avg(5,6,7) and Avg(7,8,1), where D(1), D(2)...D(8) are expressed as grayscale values of surrounding pixels, Avg (1 ⁇ 8) ) is expressed as the average of D(1), D(2)...D(8), and Avg(2,6,4,8) is expressed as D(2), D(4), D(6), The average of D(8), and so on.
  • D(1), D(2)...D(8) are expressed as grayscale values of surrounding
  • the invention further provides a picture frame data reduction method for overdrive technology, comprising the following steps:
  • the first frame data is divided into a target pixel and a plurality of surrounding pixels, wherein the first frame data is divided into the target pixel and the surrounding pixels according to a predetermined number of rows and column number reference information. ;
  • S03 selecting, from the plurality of data combinations provided by the surrounding pixels of the first frame data, a data combination that is close to the data of the target pixel as the target pixel of the encoding;
  • S05 compressing data of surrounding pixels of the first frame data, and storing the selected information of the target pixel in the memory;
  • the second frame data is equally divided into a target pixel and surrounding pixels
  • S11 Decompress and convert the data of the surrounding pixels of the compressed first frame data into the first frame to decode the surrounding data
  • the first frame decoding target data is restored from the first frame decoding surrounding data according to the selection information of the target pixel of the first frame data.
  • the invention mainly distinguishes the frame data by the target pixel and the surrounding pixels, and then selects one of the data combinations from the plurality of data combinations provided by the surrounding pixels as the encoded target pixel; the data of the surrounding pixels will pass through Compressed, and stored in the memory together with the selection information of the aforementioned target pixel.
  • the data of the surrounding pixels of the previous frame data can be taken out from the memory at the same time, and the target pixel of the previous frame data is restored according to the selection information to be encoded with the next frame data.
  • the target pixels are compared to determine if an overdrive algorithm is required. Since the amount of memory required is small, the cost of driving the wafer can be effectively saved.
  • 1A-1C are flow charts showing the steps of a method for reducing frame data in a preferred embodiment of the present invention.
  • Fig. 2 is a block diagram showing the apparatus for performing the frame data reduction method of the present invention.
  • FIG. 3 is a partial schematic view of a pixel block of a frame of material.
  • FIG. 1A-1C and FIG. 2 are flowcharts of a preferred embodiment of a frame reduction method for overdrive technology of the present invention
  • FIG. 2 is a reduction of frame data for performing the present invention.
  • the frame data reduction method is mainly performed by a controller 1 and a memory 2, and the controller 1 and the memory 2 can be integrated into a timing controller (TCON, Over-driving circuit (over-driving) Circuit).
  • the timing controller can receive a frame data, and then control the pixel driving circuit of the liquid crystal panel 3 to turn on the pixel column of the liquid crystal panel one by one, and output pixel information of the frame data to the data driving circuit of the liquid crystal panel 3 to drive The pixels of each pixel column are displayed.
  • the controller 1 executes the frame data reduction method, and compresses the current frame frame data in the memory 2 (for example, the nth frame), and receives the frame data.
  • the next frame data for example, the n+1th frame
  • the previously stored frame data ie, the compressed nth frame
  • the restored data ie, the n+1th frame
  • the overdrive circuit is further used to execute the overdrive algorithm to accelerate the reaction speed of the liquid crystal molecules. To avoid the occurrence of afterimages.
  • the frame data reduction method performed by the controller 1 includes the following steps for the frame frame data currently received:
  • S03 selecting, from the plurality of data combinations provided by the surrounding pixels of the first frame data, a data combination that is close to the data of the target pixel as the target pixel of the encoding;
  • S05 compressing data of surrounding pixels of the first frame data, and storing the selection information of the target pixel in the memory.
  • the first frame data is mainly divided into a target pixel and surrounding pixels according to a predetermined number of rows and column number reference information.
  • the pixels defining the odd rows are the target pixels
  • the pixels defining the even rows in the next pixel column are the target pixels.
  • the plurality of data combinations provided by the surrounding pixels of the first frame material may include a grayscale value of each surrounding pixel or an average value of grayscale values of a plurality of surrounding pixels.
  • FIG. 3 is a partial schematic diagram of a pixel block of a frame data.
  • the target pixel of the first frame data is labeled A, and the surrounding pixels are 8 surrounding the target pixel A. Pixel.
  • the eight pixel numbers are 1 to 8 in the order of the upper left, upper, upper right, right, lower right, lower, lower left, and left of the target pixel.
  • the data combination provided by the 8 surrounding pixels preferably includes D(1), D(2)...D(8), Avg (1 ⁇ 8), Avg(2,6,4,8), Avg(4,8), Avg(2,6), Avg(1,5), Avg (3,7), Avg(1, 2,3), Avg (3,4,5), Avg(5,6,7) and Avg(7,8,1), where D(1), D(2)...D(8) are expressed as grayscale values of surrounding pixels; Avg (1 ⁇ 8) ) is expressed as the average of D(1), D(2)...D(8); Avg(2,6,4,8) is represented as D(2), D(4), D(6), The average value of D(8); and so on, Avg(4,8) is expressed as the average of D(4) and D(8); Avg(2,6) is represented as D(2), D(6) The average value; Avg (1, 5) is expressed as the average of D (1), D (5); Avg (3, 7) is expressed as the average of D (3), D (7); Avg (1,
  • the plurality of data combinations provided by the surrounding pixels of the first frame data may further include a weighted average of the grayscale values of the plurality of surrounding pixels.
  • a data combination close to the grayscale value of the target pixel A is selected as the encoded pixel of the target pixel A.
  • step S04 the selected data combination is subjected to compression processing, and then decompressed and restored to a first frame decoding target data. Since the data combination composed of the surrounding pixels is later compressed and stored in the memory 2, a certain degree of distortion is generated after decompressing and reading. Therefore, this step S04 is mainly performed by compressing and decompressing and restoring.
  • the selected data combination provides decoded pixels with the same distortion condition to compare the data of the preceding and succeeding frames to improve the accuracy of the comparison.
  • step S05 the data of the surrounding pixels of the first frame material is subjected to compression processing, and stored in the memory 2 together with the selection information of the target pixel.
  • the data of the surrounding pixels can be linearly or non-linearly converted into a fixed corresponding value, and since the corresponding value is less than the original amount of data, the compression effect can be achieved.
  • the conversion manner may be that the pixel value of the RGB format is converted into the pixel value of the YCbCr format and the most significant bit of the pixel value (MSB, Most Significant Bit); or, pass the pixel values in RGB format through a color lookup table (Lookup Table) for color conversion; or, directly take the most significant bit (MSB) of the pixel value of the RGB format; or, pass the pixel value of the RGB format through a color lookup table (Lookup Table) After the color conversion, the most significant bit (MSB) of the pixel value is taken.
  • MSB most significant bit
  • the frame data reduction method executed by the controller 1 may further include the following steps:
  • the second frame data is equally divided into a target pixel and surrounding pixels
  • S11 Decompress and convert the data of the surrounding pixels of the compressed first frame data into the first frame to decode the surrounding data
  • the first frame decoding target data is restored from the first frame decoding surrounding data according to the selection information of the target pixel of the first frame data.
  • step S06 the first frame data is already the previous frame data, and is stored in the memory 2 through steps S01-S05, and the second frame data is the current frame data.
  • the second frame data is also divided into a target pixel and surrounding pixels, and a plurality of data combinations provided by the surrounding pixels are selected to be similar to the target pixel.
  • the data combination is used as the encoded target pixel, and then the selected data combination is compressed and then restored to a second frame to decode the target data.
  • steps S10, S11 the data of the surrounding pixels of the first frame material previously stored in the memory 2 is read and decompressed and restored to the first frame to decode the surrounding data.
  • the first frame decoding target data is restored from the first frame decoding surrounding data according to the selection information of the target pixel of the first frame data.
  • the current second picture frame decoding target data is compared with the previous first picture frame decoding target data under the same distortion condition. If the comparison result is the same, it means that the current target pixel is a static image, and the grayscale value data of the target pixel of the original second frame data can be directly output. On the other hand, if they are not the same, it means that the current target pixel is a dynamic image, and the target pixel must be overdriven to accelerate the reaction speed of the liquid crystal molecules and avoid the phenomenon of image sticking.
  • the frame data reduction method performed by the controller 1 may further include the following steps:
  • the data of the surrounding pixels of the current second frame material must also be compressed and stored in the memory 2 as a comparison object of the next frame frame data.
  • the data of the surrounding pixels of the second frame data is further decompressed and restored into the second frame to decode the surrounding data, and the foregoing A picture frame decodes the surrounding data for comparison, so that the current second picture frame decoding surrounding data can be compared with the previous first picture frame decoding surrounding data under the same distortion condition.
  • the comparison result is the same, it means that the current surrounding pixels are static images, and the grayscale value data of the surrounding pixels of the original second frame data can be directly output.
  • the surrounding pixels are dynamic images, and the surrounding pixels must be overdriven to accelerate the reaction speed of the liquid crystal molecules and avoid the phenomenon of image sticking.
  • the present invention mainly distinguishes the frame data by the target pixel and the surrounding pixels, and then selects one of the plurality of data combinations provided by the surrounding pixels as the encoded target pixel; the surrounding pixels
  • the data is compressed and stored in the memory along with the selection information of the aforementioned target pixels.
  • the data of the surrounding pixels of the previous frame data can be taken out from the memory at the same time, and the target pixel of the previous frame data is restored according to the selection information to be encoded with the next frame data.
  • the target pixels are compared to determine if an overdrive algorithm is required.
  • This frame data reduction method can effectively reduce the amount of memory used, and the screen does not flicker when the operation is performed.
  • the logic gate usage of the timing controller of the liquid crystal display can be effectively reduced, thereby reducing the cost of driving the wafer.

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Description

用于过度驱动技术的画框资料缩减方法 技术领域
本发明是有关于一种液晶显示技术，特别是有关于一种用于过度驱动技术的画框资料缩减方法，可有效缩减用于过度驱动技术的记忆体量。
 背景技术
液晶分子对于信号电压差的反应速度有限。因此传统液晶显示器在显示动态影像时，当前画面无法迅速切换到下一帧画面时，就会出现残影现象。为了解决此问题，一般使用过度驱动方法(Over Driving)，在短时间内施于一电压，使该电压相对高(或低)于下一帧显示画面亮度的灰阶资料电压，以加快液晶分子的反应速度。
目前的液晶显示装置所使用的过度驱动技术需要额外的记忆体来储存所述前一画框资料，使得当前的画框资料得以与前一画框资料进行比较，以判断画面是否为静态或动态影像，若为动态影像，再执行过度驱动技术。然而，所述额外的记忆体会导致驱动晶片的成本增加。因此，若能有效地缩减预定储存的画框资料的资料量，将可有效节省驱动晶片的成本。
故，有必要提供一种用于过度驱动技术的画框资料缩减方法，以解决现有技术所存在的问题。
 技术问题
本发明的主要目的在于提供一种用于过度驱动技术的画框资料缩减方法，通过周围像素的组合选择进行像素的编码，可有效减少储存画框资料所需的记忆体空间。
 技术解决方案
为达成本发明的前述目的，本发明提供一种用于过度驱动技术的画框资料缩减方法，包括下列步骤：
S01：接受第一画框资料；
S02：将第一画框资料区分为一目标像素与数个周围像素；
S03：从第一画框资料的周围像素提供的多种资料组合中选择与该目标像素的资料相近的资料组合作为编码的目标像素；
S04：将第一画框资料中选择的资料组合进行压缩处理再还原成一第一画框解码目标资料；以及
S05：将所述第一画框资料的周围像素的资料进行压缩处理，并连同前述目标像素的选择资讯储存于记忆体中。
在本发明的一实施例中，进一步包含下列步骤：
S06：接着接受第二画框资料；
S07：将第二画框资料同样区分为一目标像素与周围像素；
S08：在第二画框资料中，从周围像素提供的多种资料组合中选择出与该目标像素相似的资料组合作为编码后的目标像素；
S09：将第二画框资料中选择的资料组合进行压缩处理再还原成一第二画框解码目标资料；
S10：自记忆体取出先前储存的压缩后的所述第一画框资料的周围像素的资料；
S11：将所述压缩后的第一画框资料的周围像素的资料解压缩转换成第一画框解码周围资料；
S12：根据前述第一画框资料的目标像素的选择资讯从第一画框解码周围资料还原出所述第一画框解码目标资料；以及
S13：比较第二画框解码目标资料与第一画框解码目标资料是否相同，若相同，则直接输出原始的第二画框资料的目标画素资料，若不相同，则对目标像素进行过度驱动操作。
在本发明的一实施例中，进一步包括下列步骤：
S14：将所述第二画框资料的周围像素的资料进行压缩处理再还原成第二画框解码周围资料；
S15：比较第二画框解码周围资料与第一画框解码周围资料是否相同，若相同，则直接输出原始的第二画框资料的周围像素资料，若不相同，则对周围像素进行过度驱动操作。
在本发明的一实施例中，在步骤S02中，所述第一画框资料是根据一预定的行数与列数参考资讯被区分为目标像素与周围像素。
在本发明的一实施例中，所述第一画框资料的周围像素是围绕该目标像素的8个像素；其中依照该目标像素的左上、上方、右上、右边、右下、下方、左下及左方的顺序将该8个像素编号为1～8；其中该8个周围像素提供的资料组合包括D(1),D(2)...D(8), Avg(1~8), Avg(2,6,4,8), Avg(4,8), Avg(2,6), Avg(1,5), Avg (3,7), Avg(1,2,3), Avg(3,4,5), Avg(5,6,7)及Avg(7,8,1)，其中D(1),D(2)...D(8)表示为各周围像素的灰阶值，Avg(1~8)表示为D(1),D(2)...D(8)的平均值，Avg(2,6,4,8)表示为D(2)、D(4)、D(6)、D(8)的平均值，依此类推。
在本发明的一实施例中，该8个周围像素提供的资料组合进一步包括F(4,8), F(2,6), F(1,5), F(3,7),其中F(x,y) = 1/3*D(x)+2/3*D(y)或者F(x,y)=2/3*D(x)+1/3*D(y)，x,y为所述周围像素的编号。
本发明另提供一种用于过度驱动技术的画框资料缩减方法，包括下列步骤：
S01：接受第一画框资料；
S02：将第一画框资料区分为一目标像素与数个周围像素，其中，所述第一画框资料是根据一预定的行数与列数参考资讯被区分为所述目标像素与周围像素；
S03：从第一画框资料的周围像素提供的多种资料组合中选择与该目标像素的资料相近的资料组合作为编码的目标像素；
S04：将第一画框资料中选择的资料组合进行压缩处理再还原成一第一画框解码目标资料；
S05：将所述第一画框资料的周围像素的资料进行压缩处理，并连同前述目标像素的选择资讯储存于记忆体中；
S06：接着接受第二画框资料；
S07：将第二画框资料同样区分为一目标像素与周围像素；
S08：在第二画框资料中，从周围像素提供的多种资料组合中选择出与该目标像素相似的资料组合作为编码后的目标像素；
S09：将第二画框资料中选择的资料组合进行压缩处理再还原成一第二画框解码目标资料；
S10：自记忆体取出先前储存的压缩后的所述第一画框资料的周围像素的资料；
S11：将所述压缩后的第一画框资料的周围像素的资料解压缩转换成第一画框解码周围资料；
S12：根据前述第一画框资料的目标像素的选择资讯从第一画框解码周围资料还原出所述第一画框解码目标资料；以及
S13：比较第二画框解码目标资料与第一画框解码目标资料是否相同，若相同，则直接输出原始的第二画框资料的目标画素资料，若不相同，则对目标像素进行过度驱动操作。
 有益效果
本发明主要将画框资料以目标像素与周围像素来做区分，再从周围像素提供的多种资料组合中选择其中一资料组合来作为编码后的目标像素；所述周围像素的资料会再经过压缩，并连同前述目标像素的选择资讯储存于记忆体中。当接受下一画框资料时，可同时从记忆体取出该前一画框资料的周围像素的资料，并根据选择资讯还原前一画框资料的目标像素来与下一画框资料的编码后的目标像素进行比较，判断是否需进行过度驱动演算法。由于所需的记忆体使用量较少，因此可有效节省驱动晶片的成本。
 附图说明
图1A-1C是本发明一较佳实施例画框资料缩减方法的步骤流程图。
图2是执行本发明的画框资料缩减方法的装置方块图。
图3是一画框资料的像素区块的局部示意图。
 本发明的最佳实施方式
为让本发明上述目的、特征及优点更明显易懂，下文特举本发明较佳实施例，并配合附图，作详细说明如下。再者，本发明所提到的方向用语，例如「上」、「下」、「前」、「后」、「左」、「右」、「内」、「外」、「侧面」等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本发明，而非用以限制本发明。
请参考图1A-1C及图2所示，图1A-1C是本发明用于过度驱动技术的画框资料缩减方法一较佳实施例的流程图；图2是执行本发明的画框资料缩减方法的装置方块图。所述画框资料缩减方法主要是通过一控制器1与一记忆体2来执行，该控制器1与记忆体2可整合于时序控制器(TCON, time schedule controller)构成的过度驱动电路(over-driving circuit)中。该时序控制器可接收一画框资料，再据以控制液晶面板3的栅极驱动电路逐一开启液晶面板的像素列，并且输出画框资料的像素资讯给液晶面板3的数据驱动电路，以驱动各像素列的像素显示。在持续接收画框资料的过程中，所述控制器1会执行所述画框资料缩减方法，将当前一帧的画框资料压缩储存于记忆体2中(例如第n帧)，并于接收下一帧画框资料(例如第n+1帧)时，读取前次储存的画框资料(即所述被压缩储存的第n帧)且还原该资料，再接着与目前画框缩减且还原的资料(即所述第n+1帧)比较，进而判断目前是输出静态影像或动态影像，若为动态影像，则进一步使用过度驱动电路来执行过度驱动演算法，加快液晶分子的反应速度，以避免残影现象的产生。
如图1A所示，针对当前接收的一帧画框资料，所述控制器1执行的画框资料缩减方法包括下列步骤：
S01：接受第一画框资料；
S02：将第一画框资料区分为一目标像素与数个周围像素；
S03：从第一画框资料的周围像素提供的多种资料组合中选择与该目标像素的资料相近的资料组合作为编码的目标像素；
S04：将第一画框资料中选择的资料组合进行压缩处理再还原成一第一画框解码目标资料；以及
S05：将所述第一画框资料的周围像素的资料进行压缩处理，并连同前述目标像素的选择资讯储存于记忆体中。
在前述的步骤S02中，所述第一画框资料主要是根据一预定的行数与列数参考资讯被区分为目标像素与周围像素。例如，在一像素列中，定义奇数行的像素为目标像素，在下一像素列中则定义偶数行的像素为目标像素。
在前述的步骤S03中，所述第一画框资料的周围像素提供的多种资料组合可以包含每一周围像素的灰阶值或是其中数个周围像素的灰阶值的平均值。
例如，进一步参考图3所示，图3是一画框资料的像素区块的局部示意图，所述第一画框资料的目标像素标示为A，而周围像素是围绕该目标像素A的8个像素。依照该目标像素的左上、上方、右上、右边、右下、下方、左下及左方的顺序，该8个像素编号为1～8。在一实施例中，该8个周围像素提供的资料组合优选包括D(1),D(2)...D(8), Avg(1~8), Avg(2,6,4,8), Avg(4,8), Avg(2,6), Avg(1,5), Avg (3,7), Avg(1,2,3), Avg(3,4,5), Avg(5,6,7)及Avg(7,8,1)，其中D(1),D(2)...D(8)表示为各周围像素的灰阶值；Avg(1~8)表示为D(1),D(2)...D(8)的平均值；Avg(2,6,4,8)表示为D(2)、D(4)、D(6)、D(8)的平均值；依此类推，Avg(4,8)表示为D(4)、D(8)的平均值；Avg(2,6)表示为D(2)、D(6)的平均值；Avg(1,5)表示为D(1)、D(5)的平均值；Avg(3,7)表示为D(3)、D(7)的平均值；Avg(1,2,3)表示为D(1)、D(2)、D(3)的平均值；Avg(3,4,5)表示为D(3)、D(4)、D(5)的平均值；Avg(5,6,7)表示为D(5)、D(6)、D(7)的平均值及Avg(7,8,1)表示为D(7)、D(8)、D(1)的平均值。
所述第一画框资料的周围像素提供的多种资料组合也可以进一步包含数个周围像素的灰阶值的加权平均值，例如，前述8个周围像素提供的资料组合进一步包括：F(4,8), F(2,6), F(1,5), F(3,7),其中F(x,y) = 1/3*D(x)+2/3*D(y)；或者F(x,y) = 2/3*D(x)+1/3*D(y)，x,y为所述周围像素的编号。
在前述多种资料组合中，与该目标像素A的灰阶值相近的资料组合会被选择出，作为该目标像素A的编码像素。
在步骤S04中，所述被选择的资料组合会经过压缩处理，接着再解压缩还原成一第一画框解码目标资料。由于所述由周围像素构成的资料组合稍后会被压缩储存到记忆体2中，之后再解压缩读取时会产生一定程度的失真，因此，此步骤S04主要是透过压缩再解压缩还原选定的资料组合，提供具有相同失真条件的解码像素来做前后帧的资料比对，提高比对的准确性。
在步骤S05中，所述第一画框资料的周围像素的资料会经过压缩处理，并连同前述目标像素的选择资讯储存于记忆体2中。
所述周围像素的资料可经过线性或非线性地转换成固定的对应值，由于该对应值较原本的资料量少，故可达到压缩效果。所述的转换方式可以是将RGB格式的像素值转换成YCbCr格式的像素值再取该像素值的最高有效位元(MSB, Most Significant Bit)；或者，将RGB格式的像素值通过一色彩查找表(Lookup table)进行色彩转换；或者，直接取RGB格式的像素值的最高有效位元(MSB)；或者，将RGB格式的像素值通过一色彩查找表(Lookup table)进行色彩转换后再取该像素值的最高有效位元(MSB)。
如图1B所示，在储存完一帧的画框资料后，所述控制器1执行的画框资料缩减方法可再包括下列步骤：
S06：接着接受第二画框资料；
S07：将第二画框资料同样区分为一目标像素与周围像素；
S08：在第二画框资料中，从周围像素提供的多种资料组合中选择出与该目标像素相似的资料组合作为编码后的目标像素；
S09：将第二画框资料中选择的资料组合进行压缩处理再还原成一第二画框解码目标资料；
S10：自记忆体取出先前储存的压缩后的所述第一画框资料的周围像素的资料；
S11：将所述压缩后的第一画框资料的周围像素的资料解压缩转换成第一画框解码周围资料；
S12：根据前述第一画框资料的目标像素的选择资讯从第一画框解码周围资料还原出所述第一画框解码目标资料；以及
S13：比较第二画框解码目标资料与第一画框解码目标资料是否相同，若相同，则直接输出原始的第二画框资料的目标画素资料，若不相同，则对目标像素进行过度驱动操作。
在步骤S06中，前述第一画框资料已为前一画框资料，通过步骤S01~S05储存于记忆体2中，而第二画框资料则为当前的画框资料。
与步骤S02~S04相同，在步骤S07~S09中，第二画框资料也会被区分为一目标像素与周围像素，并从周围像素提供的多种资料组合中选择出与该目标像素相似的资料组合作为编码后的目标像素，接着被选择的资料组合会进行压缩处理再还原成一第二画框解码目标资料。
同一时间，在步骤S10、S11中，先前储存于记忆体2中的所述第一画框资料的周围像素的资料被读取并解压缩还原成第一画框解码周围资料。
再如同步骤12所述，根据前述第一画框资料的目标像素的选择资讯从所述第一画框解码周围资料还原出所述第一画框解码目标资料。
此时，如同步骤S13所述，当前的第二画框解码目标资料得以在相同的失真条件下与先前的第一画框解码目标资料进行比较。若比对结果为两者相同，则表示目前的目标像素是显示静态的影像，可直接输出原始的第二画框资料的目标画素的灰阶值资料。反之，若不相同，则表示目前的目标像素是显示动态的影像，必须对该目标像素进行过度驱动操作，以加速液晶分子的反应速度，避免残影现象产生。
再者，如图1C所示，所述控制器1执行的画框资料缩减方法可再包括下列步骤：
S14：将所述第二画框资料的周围像素的资料进行压缩处理再还原成第二画框解码周围资料；
S15：比较第二画框解码周围资料与第一画框解码周围资料是否相同，若相同，则直接输出原始的第二画框资料的周围像素资料，若不相同，则对周围像素进行过度驱动操作。
当前的所述第二画框资料的周围像素的资料同样必须经过压缩处理再储存于记忆体2中，以作为下一帧画框资料的比较对象。然而，与目标像素的资料比对方式相同，在步骤S14与S15中，所述第二画框资料的周围像素的资料会再被解压缩还原成第二画框解码周围资料，来与前述第一画框解码周围资料进行比对，使得当前的第二画框解码周围资料得以在相同的失真条件下与先前的第一画框解码周围资料进行比较。若比对结果为两者相同，则表示目前的周围像素是显示静态的影像，可直接输出原始的第二画框资料的周围画素的灰阶值资料。反之，若不相同，则表示目前的周围像素是显示动态的影像，必须对该周围像素进行过度驱动操作，以加速液晶分子的反应速度，避免残影现象产生。
综上所述，本发明主要将画框资料以目标像素与周围像素来做区分，再从周围像素提供的多种资料组合中选择其中一资料组合来作为编码后的目标像素；所述周围像素的资料会再经过压缩，并连同前述目标像素的选择资讯储存于记忆体中。当接受下一画框资料时，可同时从记忆体取出该前一画框资料的周围像素的资料，并根据选择资讯还原前一画框资料的目标像素来与下一画框资料的编码后的目标像素进行比较，判断是否需进行过度驱动演算法。此画框资料缩减方法可有效减少记忆体的使用量，且在进行操作时不会发生画面闪动的情况。也由于周围像素的资料组合的计算方式简易，可有效降低液晶显示器的时序控制器的逻辑闸使用量，从而降低驱动晶片的成本。
本发明已由上述相关实施例加以描述，然而上述实施例仅为实施本发明的范例。必需指出的是，已公开的实施例并未限制本发明的范围。相反地，包含于权利要求书的精神及范围的修改及均等设置均包括于本发明的范围内。
 本发明的实施方式
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Claims (9)

  1. 一种用于过度驱动技术的画框资料缩减方法，其包含下列步骤：
    S01：接受第一画框资料；
    S02：将第一画框资料区分为一目标像素与数个周围像素，其中，所述第一画框资料是根据一预定的行数与列数参考资讯被区分为所述目标像素与周围像素；
    S03：从第一画框资料的周围像素提供的多种资料组合中选择与该目标像素的资料相近的资料组合作为编码的目标像素；
    S04：将第一画框资料中选择的资料组合进行压缩处理再还原成一第一画框解码目标资料；
    S05：将所述第一画框资料的周围像素的资料进行压缩处理，并连同前述目标像素的选择资讯储存于记忆体中；
    S06：接着接受第二画框资料；
    S07：将第二画框资料同样区分为一目标像素与周围像素；
    S08：在第二画框资料中，从周围像素提供的多种资料组合中选择出与该目标像素相似的资料组合作为编码后的目标像素；
    S09：将第二画框资料中选择的资料组合进行压缩处理再还原成一第二画框解码目标资料；
    S10：自记忆体取出先前储存的压缩后的所述第一画框资料的周围像素的资料；
    S11：将所述压缩后的第一画框资料的周围像素的资料解压缩转换成第一画框解码周围资料；
    S12：根据前述第一画框资料的目标像素的选择资讯从第一画框解码周围资料还原出所述第一画框解码目标资料；以及
    S13：比较第二画框解码目标资料与第一画框解码目标资料是否相同，若相同，则直接输出原始的第二画框资料的目标画素资料，若不相同，则对目标像素进行过度驱动操作。
  2. 如权利要求1所述的用于过度驱动技术的画框资料缩减方法，其中：所述第一画框资料的周围像素是围绕该目标像素的8个像素；其中依照该目标像素的左上、上方、右上、右边、右下、下方、左下及左方的顺序将该8个像素编号为1～8；其中该8个周围像素提供的资料组合包括D(1),D(2)...D(8), Avg(1~8), Avg(2,6,4,8), Avg(4,8), Avg(2,6), Avg(1,5), Avg (3,7), Avg(1,2,3), Avg(3,4,5), Avg(5,6,7)及Avg(7,8,1)，其中D(1),D(2)...D(8)表示为各周围像素的灰阶值，Avg(1~8)表示为D(1),D(2)...D(8)的平均值，Avg(2,6,4,8)表示为D(2)、D(4)、D(6)、D(8)的平均值，依此类推。
  3. 如权利要求2所述的用于过度驱动技术的画框资料缩减方法，其中：该8个周围像素提供的资料组合进一步包括F(4,8), F(2,6), F(1,5), F(3,7),其中F(x,y)=1/3*D(x)+2/3*D(y)或者F(x,y)=2/3*D(x)+1/3*D(y)，x,y为所述周围像素的编号。
  4. 一种用于过度驱动技术的画框资料缩减方法，其包含下列步骤：
    S01：接受第一画框资料；
    S02：将第一画框资料区分为一目标像素与数个周围像素；
    S03：从第一画框资料的周围像素提供的多种资料组合中选择与该目标像素的资料相近的资料组合作为编码的目标像素；
    S04：将第一画框资料中选择的资料组合进行压缩处理再还原成一第一画框解码目标资料；以及
    S05：将所述第一画框资料的周围像素的资料进行压缩处理，并连同前述目标像素的选择资讯储存于记忆体中。
  5. 如权利要求4所述的用于过度驱动技术的画框资料缩减方法，其中：进一步包含下列步骤：
    S06：接着接受第二画框资料；
    S07：将第二画框资料同样区分为一目标像素与周围像素；
    S08：在第二画框资料中，从周围像素提供的多种资料组合中选择出与该目标像素相似的资料组合作为编码后的目标像素；
    S09：将第二画框资料中选择的资料组合进行压缩处理再还原成一第二画框解码目标资料；
    S10：自记忆体取出先前储存的压缩后的所述第一画框资料的周围像素的资料；
    S11：将所述压缩后的第一画框资料的周围像素的资料解压缩转换成第一画框解码周围资料；
    S12：根据前述第一画框资料的目标像素的选择资讯从第一画框解码周围资料还原出所述第一画框解码目标资料；以及
    S13：比较第二画框解码目标资料与第一画框解码目标资料是否相同，若相同，则直接输出原始的第二画框资料的目标画素资料，若不相同，则对目标像素进行过度驱动操作。
  6. 如权利要求5所述的用于过度驱动技术的画框资料缩减方法，其中：进一步包括下列步骤：
    S14：将所述第二画框资料的周围像素的资料进行压缩处理再还原成第二画框解码周围资料；
    S15：比较第二画框解码周围资料与第一画框解码周围资料是否相同，若相同，则直接输出原始的第二画框资料的周围像素资料，若不相同，则对周围像素进行过度驱动操作。
  7. 如权利要求4所述的用于过度驱动技术的画框资料缩减方法，其中：在步骤S02中，所述第一画框资料是根据一预定的行数与列数参考资讯被区分为目标像素与周围像素。
  8. 如权利要求4所述的用于过度驱动技术的画框资料缩减方法，其中：所述第一画框资料的周围像素是围绕该目标像素的8个像素；其中依照该目标像素的左上、上方、右上、右边、右下、下方、左下及左方的顺序将该8个像素编号为1～8；其中该8个周围像素提供的资料组合包括D(1),D(2)...D(8), Avg(1~8), Avg(2,6,4,8), Avg(4,8), Avg(2,6), Avg(1,5), Avg (3,7), Avg(1,2,3), Avg(3,4,5), Avg(5,6,7)及Avg(7,8,1)，其中D(1),D(2)...D(8)表示为各周围像素的灰阶值，Avg(1~8)表示为D(1),D(2)...D(8)的平均值，Avg(2,6,4,8)表示为D(2)、D(4)、D(6)、D(8)的平均值，依此类推。
  9. 如权利要求8所述的用于过度驱动技术的画框资料缩减方法，其中：该8个周围像素提供的资料组合进一步包括F(4,8), F(2,6), F(1,5), F(3,7),其中F(x,y)=1/3*D(x)+2/3*D(y)或者F(x,y)=2/3*D(x)+1/3*D(y)，x,y为所述周围像素的编号。
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