WO2017166406A1 - 显示画面的输出方法及输出装置 - Google Patents

显示画面的输出方法及输出装置 Download PDF

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Publication number
WO2017166406A1
WO2017166406A1 PCT/CN2016/083075 CN2016083075W WO2017166406A1 WO 2017166406 A1 WO2017166406 A1 WO 2017166406A1 CN 2016083075 W CN2016083075 W CN 2016083075W WO 2017166406 A1 WO2017166406 A1 WO 2017166406A1
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frame picture
decompressed
nth frame
picture
data
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PCT/CN2016/083075
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English (en)
French (fr)
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扶伟
吴宇
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深圳市华星光电技术有限公司
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Priority to US15/109,772 priority Critical patent/US20180109801A1/en
Publication of WO2017166406A1 publication Critical patent/WO2017166406A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/42Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
    • H04N19/423Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation characterised by memory arrangements
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/34Control 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
    • G09G3/36Control 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/146Data rate or code amount at the encoder output
    • H04N19/147Data rate or code amount at the encoder output according to rate distortion criteria
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/172Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a picture, frame or field
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/85Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/90Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00Aspects of display data processing
    • G09G2340/02Handling of images in compressed format, e.g. JPEG, MPEG
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00Aspects of display data processing
    • G09G2340/16Determination of a pixel data signal depending on the signal applied in the previous frame
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00Aspects of the architecture of display systems
    • G09G2360/16Calculation or use of calculated indices related to luminance levels in display data
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00Aspects of the architecture of display systems
    • G09G2360/18Use of a frame buffer in a display terminal, inclusive of the display panel

Definitions

  • the present invention belongs to the field of display technologies, and in particular, to a method and an output device for outputting a display screen.
  • an overdrive (OD) method is generally used to rapidly rotate the liquid crystal after the screen is switched, and the screen after switching can reach the target gray level in time to eliminate the smear and enhance the display screen. Dynamic display effect.
  • overdrive method it is first necessary to store the previous frame picture, and then compare the current frame picture with the previous frame picture and perform an overdrive operation before outputting.
  • the memory used for storage is too large to occupy space and cost increases, so the previous frame is compressed before the previous frame is stored, and then the stored compressed previous frame is compared when the comparison is performed. Decompressing, and finally comparing the current frame picture with the decompressed previous frame picture and performing overdrive operation before outputting.
  • an object of the present invention is to provide a method for outputting a display picture, comprising: compressing an Nth frame picture; and performing a method for compressing the Nth frame picture and the Nth - The method of compressing the 1 frame picture is the same; storing the compressed Nth frame picture; decompressing the compressed Nth frame picture; wherein, the method of decompressing the compressed Nth frame picture and The method of decompressing the compressed N-1th frame is the same; the pair is decompressed The reduced Nth frame picture is compared with the decompressed N-1th frame picture to generate a comparison result, and the display picture is output based on the decompressed Nth frame picture and the comparison result.
  • the compensation data is searched from the overdrive lookup table, and the compensation data is used to The data of the decompressed Nth frame picture is compensated to output the Nth frame picture after data compensation.
  • the compensation data corresponds to a data comparison result of the decompressed Nth frame picture and the decompressed N-1th frame picture.
  • the decompressed Nth frame picture is identical to the decompressed N-1th frame picture, the decompressed Nth frame picture is directly output.
  • the output method of the display screen is applied to a controller of the screen display.
  • Another object of the present invention is to provide an output device for displaying a picture, comprising: a compression module configured to compress an Nth frame picture; wherein the compression module uses the same compression method for the Nth frame picture Compressing with the N-1th frame picture; the storage module is configured to store the compressed Nth frame picture; and the decompression module is configured to decompress the compressed Nth frame picture; wherein The decompression module decompresses the compressed Nth frame picture and the compressed N-1th frame picture by using the same decompression method; the data comparison module is configured to be the decompressed Nth frame picture The data is compared with the decompressed N-1th frame picture to generate a comparison result, and the display screen is output based on the decompressed Nth frame picture and the comparison result.
  • the data comparison module is further configured to look up from the overdrive lookup table included therein.
  • the compensation data is output, and the data of the decompressed Nth frame picture is compensated by the compensation data to output the data-compensated Nth frame picture.
  • the compensation data corresponds to a data comparison result of the decompressed Nth frame picture and the decompressed N-1th frame picture.
  • the data comparison module is further configured to directly output the decompressed Nth frame picture. .
  • the output device of the display screen is applied to a controller of the screen display.
  • an output device and an output method of a display screen can avoid a problem of image distortion caused by an overdrive operation, thereby improving display quality of a display screen.
  • FIG. 1 is a block diagram of an output device of a display screen according to an embodiment of the present invention.
  • FIG. 2 is a flow chart of a method of outputting a display screen in accordance with an embodiment of the present invention.
  • FIG. 1 is a block diagram of an output device of a display screen in accordance with an embodiment of the present invention.
  • an output device for displaying a screen includes a compression module 100, a storage module 200, a decompression module 300, and a data comparison module 400.
  • the output device of the display screen according to the embodiment of the present invention receives the N-1th frame picture and the Nth frame picture by the front end circuit, wherein the N-1th frame picture is earlier than the Nth frame picture, N ⁇ 2 and N is positive Integer.
  • the compression module 100 compresses the N-1th frame by using a compression algorithm to generate a compressed N-1 frame, the compressed N-th frame.
  • the data of one frame will be smaller than the data of the N-1 frame.
  • the data comparison module 400 can smoothly process the N-1th frame and the frame.
  • the storage module 200 is used to temporarily store and delay the specific time. After the output, it is intended to compensate for the above transmission time difference and operation time.
  • the decompression module 300 is configured to decompress the compressed N-1th frame to generate the decompressed N-1th frame, and the decompression module 300 utilizes a solution opposite to the compression algorithm utilized by the compression module 100.
  • the compression algorithm is used to perform the decompression operation. If a compression algorithm without data loss is used, the data of the decompressed N-1th frame picture will be equal to the data of the N-1th frame picture.
  • the compression module 100 compresses the Nth frame by using the same compression algorithm to generate a compressed Nth frame, the compressed Nth frame.
  • the data will be smaller than the data of the Nth frame.
  • the storage module 200 is configured to temporarily store the compressed Nth frame for a specific time.
  • the decompression module 300 is configured to decompress the compressed Nth frame picture to generate the decompressed Nth frame picture, and the decompression module 300 performs the decompression algorithm opposite to the compression algorithm utilized by the compression module 100. Unzip the operation. If a compression algorithm without data loss is used, the data of the Nth frame after decompression will be equal to the data of the Nth frame.
  • the data comparison module 400 compares the decompressed Nth frame picture with the decompressed N-1th frame picture to generate a comparison result; and the data comparison module 400 is based on the decompressed Nth frame.
  • the frame screen and the comparison result output a display screen.
  • the data comparison module 400 further includes an overdrive (over driver) according to the comparison result.
  • the lookup table finds the compensation data, and uses the compensation data to compensate the data of the decompressed Nth frame picture to output the data-compensated Nth frame picture.
  • the compensation data corresponds to a data difference value (ie, a comparison result) between the decompressed Nth frame picture and the decompressed N-1th frame picture.
  • the data comparison module 400 further directly outputs the decompressed Nth frame picture.
  • the output device of the display screen according to an embodiment of the present invention may be used in a picture display such as a liquid crystal display, for example, in a controller (such as a timing controller, TCON) in a liquid crystal display, but the present invention does not To be limited, it can also be used independently in a liquid crystal display.
  • a controller such as a timing controller, TCON
  • FIG. 2 is a flow chart of a method of outputting a display screen in accordance with an embodiment of the present invention.
  • the output device of the display screen shown in FIG. 1 outputs a display screen by using the output method of the display screen shown in FIG. 2, and the specific operations are as follows:
  • the compression module 100 compresses the N-1th frame by using a compression algorithm to generate a compressed N-1 frame, where the compressed The data of the subsequent N-1th frame picture is smaller than the data of the N-1th frame picture.
  • the storage module 200 is configured to temporarily store the compressed N-1th frame for a specific time.
  • the compression module 100 compresses the Nth frame by using the same compression algorithm to generate a compressed N-1 frame, wherein the compressed The data of the N frame picture is smaller than the data of the N frame picture.
  • the storage module 200 is configured to temporarily store the compressed Nth frame for a specific time.
  • the decompression module 300 is configured to respectively decompress the compressed Nth frame picture and the compressed N-1 picture to respectively generate the decompressed Nth frame picture and after decompressing.
  • the N-1th frame picture The N-1th frame picture.
  • the decompression module 300 performs a decompression operation using a decompression algorithm that is inverse to the compression algorithm utilized by the compression module 100. If a compression algorithm without data loss is used, the data of the decompressed N-1th frame picture and the decompressed Nth frame picture data are equal to the N-1th frame picture data and the Nth frame picture. The data.
  • the data comparison module 400 compares the decompressed Nth frame picture with the decompressed N-1th frame picture to generate a comparison result; and the data comparison module 400 is decompressed according to the data.
  • operation 270 is performed; if the decompressed Nth frame picture is decompressed If the data of the N-1th frame picture is the same, then operation 280 is performed.
  • the data comparison module 400 further searches for the compensation data from the over driver lookup table included therein according to the comparison result, and utilizes the compensation.
  • the data compensates the data of the decompressed Nth frame picture to output the data-compensated Nth frame picture.
  • the compensation data corresponds to a data difference value (ie, a comparison result) between the decompressed Nth frame picture and the decompressed N-1th frame picture.
  • the data comparison module 400 further directly outputs the decompressed Nth frame picture.
  • the output device and the output method of the display screen according to the embodiment of the present invention it is possible to avoid the problem of picture distortion caused by the overdrive operation, thereby improving the display quality of the display screen.

Abstract

提供了一种显示画面的输出方法,其包括:对第N帧画面进行压缩(230),其中,对第N帧画面进行压缩的方法与对第N-1帧画面进行压缩的方法相同;存储被压缩后的第N帧画面(240);对被压缩后的第N帧画面进行解压缩(250),其中,对被压缩后的第N帧画面进行解压缩的方法与对被压缩后的第N-1帧画面进行解压缩的方法相同;对被解压缩后的第N帧画面与被解压缩后的第N-1帧画面进行数据比较(260),以产生比较结果;根据被解压缩后的第N帧画面与所述比较结果输出显示画面(270,280)。还公开了一种显示画面的输出装置。该方法和装置能够避免过驱动运算后带来的画面失真问题,从而提升显示画面的显示品质。

Description

显示画面的输出方法及输出装置 技术领域
本发明属于显示技术领域,具体地讲,涉及一种显示画面的输出方法及输出装置。
背景技术
目前,在液晶面板显示的画面进行切换时,由于液晶响应速度的原因,使得切换后的画面不能及时达到目标灰阶,从而造成画面切换时具有拖影,影响显示效果。因此,在液晶面板的驱动电路中,一般会使用过驱动(Over Driver,OD)方法使画面切换后液晶迅速旋转,并使切换后的画面及时达到目标灰阶,以消除拖影,提升显示画面的动态显示效果。
在现有技术的过驱动方法中,首先需要对上一帧画面进行存储,然后将当前帧画面与上一帧画面比对并进行过驱动运算后再输出。而用作存储的记忆体太大会占据空间且成本增加,所以在存储前一帧画面之前先对前一帧画面进行压缩,然后在进行比对时,再对存储的被压缩的前一帧画面进行解压缩,最后将当前帧画面与解压缩后的上一帧画面比对并进行过驱动运算后再输出。
然后,在现有技术的过驱动方法中,存在这样一个问题,即对前一帧画面进行了压缩处理,而并未对当前帧画面进行压缩处理。众所周知,只要经过压缩处理的画面就会出现失真,所以即使两帧画面(当前帧画面和被解压缩的前一帧画面)一模一样,在经过比对且过驱动运算后输出的画面也会出现失真。
发明内容
为了解决上述现有技术存在的问题,本发明的目的在于提供一种显示画面的输出方法,其包括:对第N帧画面进行压缩;其中,对第N帧画面进行压缩的方法与对第N-1帧画面进行压缩的方法相同;存储被压缩后的第N帧画面;对被压缩后的第N帧画面进行解压缩;其中,对被压缩后的第N帧画面进行解压缩的方法与对被压缩后的第N-1帧画面进行解压缩的方法相同;对被解压 缩后的第N帧画面与被解压缩后的第N-1帧画面进行数据比较,以产生比较结果;根据被解压缩后的第N帧画面与所述比较结果输出显示画面。
进一步地,若被解压缩后的第N帧画面与被解压缩后的第N-1帧画面的数据不相同,则从过驱动查找表中查找出补偿数据,并利用所述补偿数据对被解压缩后的第N帧画面的数据进行补偿,以输出数据补偿后的第N帧画面。
进一步地,所述补偿数据对应于被解压缩后的第N帧画面与被解压缩后的第N-1帧画面的数据比较结果。
进一步地,若被解压缩后的第N帧画面与被解压缩后的第N-1帧画面的数据相同,则直接输出被解压缩后的第N帧画面。
进一步地,所述显示画面的输出方法应用于画面显示器的控制器中。
本发明的另一目的还在于提供一种显示画面的输出装置,其包括:压缩模块,被构造为对第N帧画面进行压缩;其中,所述压缩模块采用相同的压缩方法对第N帧画面和第N-1帧画面进行压缩;存储模块,被构造为存储被压缩后的第N帧画面;解压缩模块,被构造为对被压缩后的第N帧画面进行解压缩;其中,所述解压缩模块采用相同的解压缩方法对被压缩后的第N帧画面和被压缩后的第N-1帧画面进行解压缩;数据比较模块,被构造为对被解压缩后的第N帧画面与被解压缩后的第N-1帧画面进行数据比较以产生比较结果,并根据被解压缩后的第N帧画面与所述比较结果输出显示画面。
进一步地,若被解压缩后的第N帧画面与被解压缩后的第N-1帧画面的数据不相同,则所述数据比较模块进一步被构造为从其包括的过驱动查找表中查找出补偿数据,并利用所述补偿数据对被解压缩后的第N帧画面的数据进行补偿,以输出数据补偿后的第N帧画面。
进一步地,所述补偿数据对应于被解压缩后的第N帧画面与被解压缩后的第N-1帧画面的数据比较结果。
进一步地,若被解压缩后的第N帧画面与被解压缩后的第N-1帧画面的数据相同,则所述数据比较模块进一步被构造为直接输出被解压缩后的第N帧画面。
进一步地,所述显示画面的输出装置应用于画面显示器的控制器中。
本发明的有益效果:本发明的显示画面的输出装置及输出方法,能够避免过驱动运算后带来的画面失真问题,从而提升显示画面的显示品质。
附图说明
通过结合附图进行的以下描述,本发明的实施例的上述和其它方面、特点和优点将变得更加清楚,附图中:
图1是根据本发明的实施例的显示画面的输出装置的模块图;
图2是根据本发明的实施例的显示画面的输出方法的流程图。
具体实施方式
以下,将参照附图来详细描述本发明的实施例。然而,可以以许多不同的形式来实施本发明,并且本发明不应该被解释为限制于这里阐述的具体实施例。相反,提供这些实施例是为了解释本发明的原理及其实际应用,从而使本领域的其他技术人员能够理解本发明的各种实施例和适合于特定预期应用的各种修改。
图1是根据本发明的实施例的显示画面的输出装置的模块图。
参照图1,根据本发明的实施例的显示画面的输出装置包括:压缩模块100、存储模块200、解压缩模块300、数据比较模块400。
根据本发明的实施例的显示画面的输出装置由前端电路接收第N-1帧画面和第N帧画面,其中,第N-1帧画面早于第N帧画面,N≥2且N为正整数。
当压缩模块100接收到第N-1帧画面时,压缩模块100利用一压缩算法来压缩第N-1帧画面以产生被压缩后的第N-1帧画面,该被压缩后的第N-1帧画面的数据会比第N-1帧画面的数据小。
由于第N-1帧画面与第N帧画面之间具有传送时间差,且压缩模块100与解压缩模块300的操作需要时间,因此为了使数据比较模块400能顺利地处理第N-1帧画面与第N帧画面,存储模块200便用来暂存并对该延迟一特定时 间后再输出,其用意是用来补偿上述传送时间差与操作时间。
解压缩模块300用来解压缩被压缩后的第N-1帧画面以产生被解压缩后的第N-1帧画面,且解压缩模块300利用相对于压缩模块100所利用压缩算法相反的解压缩算法来进行解压缩操作。若使用无数据损失的压缩算法,则被解压缩后的第N-1帧画面的数据会等于第N-1帧画面的数据。
同样地,当压缩模块100接收到第N帧画面时,压缩模块100利用同样的压缩算法来压缩第N帧画面以产生被压缩后的第N帧画面,该被压缩后的第N帧画面的数据会比第N帧画面的数据小。
存储模块200用来暂存被压缩后的第N帧画面一特定时间。
解压缩模块300用来解压缩被压缩后的第N帧画面以产生被解压缩后的第N帧画面,且解压缩模块300利用相对于压缩模块100所利用压缩算法相反的解压缩算法来进行解压缩操作。若使用无数据损失的压缩算法,则被解压缩后的第N帧画面的数据会等于第N帧画面的数据。
最后,数据比较模块400对被解压缩后的第N帧画面与被解压缩后的第N-1帧画面进行数据比较,以产生比较结果;且数据比较模块400根据被解压缩后的第N帧画面与该比较结果输出显示画面。
具体地,若被解压缩后的第N帧画面与被解压缩后的第N-1帧画面的数据不相同,则数据比较模块400进一步地根据该比较结果从其包括的过驱动(over driver)查找表(look up table)中查找出补偿数据,并利用该补偿数据对被解压缩后的第N帧画面的数据进行补偿,以输出数据补偿后的第N帧画面。这里,该补偿数据对应于被解压缩后的第N帧画面与被解压缩后的第N-1帧画面的数据差值(即比较结果)。
若被解压缩后的第N帧画面与被解压缩后的第N-1帧画面的数据相同,则数据比较模块400进一步地直接输出被解压缩后的第N帧画面。
此外,根据本发明的实施例的显示画面的输出装置可用于液晶显示器等画面显示器中,例如可应用于液晶显示器中的控制器(诸如时序控制器,TCON)中,但本发明并不以此为限,其也可独立应用于液晶显示器中。
图2是根据本发明的实施例的显示画面的输出方法的流程图。
参照图1和图2,图1所示的显示画面的输出装置利用图2所示的显示画面的输出方法输出显示画面,具体操作如下:
在操作210中,压缩模块100接收到第N-1帧画面之后,压缩模块100利用一压缩算法来压缩第N-1帧画面以产生被压缩后的第N-1帧画面,其中该被压缩后的第N-1帧画面的数据会比第N-1帧画面的数据小。
在操作220中,存储模块200用来暂存被压缩后的第N-1帧画面一特定时间。
在操作230中,压缩模块100接收到第N帧画面之后,压缩模块100利用相同的压缩算法来压缩第N帧画面以产生被压缩后的第N-1帧画面,其中该被压缩后的第N帧画面的数据会比第N帧画面的数据小。
在操作240中,存储模块200用来暂存被压缩后的第N帧画面一特定时间。
在操作250中,解压缩模块300用来分别解压缩被压缩后的第N帧画面及被压缩后的第N-1画面,以分别产生被解压缩后的第N帧画面及被解压缩后的第N-1帧画面。这里,解压缩模块300利用相对于压缩模块100所利用压缩算法相反的解压缩算法来进行解压缩操作。若使用无数据损失的压缩算法,则被解压缩后的第N-1帧画面的数据与被解压缩后的第N帧画面的数据会等于第N-1帧画面的数据和第N帧画面的数据。
在操作260中,数据比较模块400对被解压缩后的第N帧画面与被解压缩后的第N-1帧画面进行数据比较,以产生比较结果;且数据比较模块400根据被解压缩后的第N帧画面与该比较结果输出显示画面。
具体地,若被解压缩后的第N帧画面与被解压缩后的第N-1帧画面的数据不相同,则进行操作270;若被解压缩后的第N帧画面与被解压缩后的第N-1帧画面的数据相同,则进行操作280。
在操作270中,数据比较模块400进一步地根据该比较结果从其包括的过驱动(over driver)查找表(look up table)中查找出补偿数据,并利用该补偿 数据对被解压缩后的第N帧画面的数据进行补偿,以输出数据补偿后的第N帧画面。这里,该补偿数据对应于被解压缩后的第N帧画面与被解压缩后的第N-1帧画面的数据差值(即比较结果)。
在操作280中,数据比较模块400进一步地直接输出被解压缩后的第N帧画面。
综上所述,根据本发明的实施例的显示画面的输出装置及输出方法,能够避免过驱动运算后带来的画面失真问题,从而提升显示画面的显示品质。
虽然已经参照特定实施例示出并描述了本发明,但是本领域的技术人员将理解:在不脱离由权利要求及其等同物限定的本发明的精神和范围的情况下,可在此进行形式和细节上的各种变化。

Claims (14)

  1. 一种显示画面的输出方法,其中,包括:
    对第N帧画面进行压缩;其中,对第N帧画面进行压缩的方法与对第N-1帧画面进行压缩的方法相同;
    存储被压缩后的第N帧画面;
    对被压缩后的第N帧画面进行解压缩;其中,对被压缩后的第N帧画面进行解压缩的方法与对被压缩后的第N-1帧画面进行解压缩的方法相同;
    对被解压缩后的第N帧画面与被解压缩后的第N-1帧画面进行数据比较,以产生比较结果;
    根据被解压缩后的第N帧画面与所述比较结果输出显示画面。
  2. 根据权利要求1所述的显示画面的输出方法,其中,若被解压缩后的第N帧画面与被解压缩后的第N-1帧画面的数据不相同,则从过驱动查找表中查找出补偿数据,并利用所述补偿数据对被解压缩后的第N帧画面的数据进行补偿,以输出数据补偿后的第N帧画面。
  3. 根据权利要求2所述的显示画面的输出方法,其中,所述补偿数据对应于被解压缩后的第N帧画面与被解压缩后的第N-1帧画面的数据比较结果。
  4. 根据权利要求1所述的显示画面的输出方法,其中,若被解压缩后的第N帧画面与被解压缩后的第N-1帧画面的数据相同,则直接输出被解压缩后的第N帧画面。
  5. 根据权利要求2所述的显示画面的输出方法,其中,若被解压缩后的第N帧画面与被解压缩后的第N-1帧画面的数据相同,则直接输出被解压缩后的第N帧画面。
  6. 根据权利要求3所述的显示画面的输出方法,其中,若被解压缩后的第N帧画面与被解压缩后的第N-1帧画面的数据相同,则直接输出被解压缩后 的第N帧画面。
  7. 根据权利要求1所述的显示画面的输出方法,其中,所述显示画面的输出方法应用于画面显示器的控制器中。
  8. 一种显示画面的输出装置,其中,包括:
    压缩模块,被构造为对第N帧画面进行压缩;其中,所述压缩模块采用相同的压缩方法对第N帧画面和第N-1帧画面进行压缩;
    存储模块,被构造为存储被压缩后的第N帧画面;
    解压缩模块,被构造为对被压缩后的第N帧画面进行解压缩;其中,所述解压缩模块采用相同的解压缩方法对被压缩后的第N帧画面和被压缩后的第N-1帧画面进行解压缩;
    数据比较模块,被构造为对被解压缩后的第N帧画面与被解压缩后的第N-1帧画面进行数据比较以产生比较结果,并根据被解压缩后的第N帧画面与所述比较结果输出显示画面。
  9. 根据权利要求8所述的显示画面的输出装置,其中,若被解压缩后的第N帧画面与被解压缩后的第N-1帧画面的数据不相同,则所述数据比较模块进一步被构造为从其包括的过驱动查找表中查找出补偿数据,并利用所述补偿数据对被解压缩后的第N帧画面的数据进行补偿,以输出数据补偿后的第N帧画面。
  10. 根据权利要求9所述的显示画面的输出装置,其中,所述补偿数据对应于被解压缩后的第N帧画面与被解压缩后的第N-1帧画面的数据比较结果。
  11. 根据权利要求8所述的显示画面的输出装置,其中,若被解压缩后的第N帧画面与被解压缩后的第N-1帧画面的数据相同,则所述数据比较模块进一步被构造为直接输出被解压缩后的第N帧画面。
  12. 根据权利要求9所述的显示画面的输出装置,其中,若被解压缩后的第N帧画面与被解压缩后的第N-1帧画面的数据相同,则所述数据比较模块进一步被构造为直接输出被解压缩后的第N帧画面。
  13. 根据权利要求10所述的显示画面的输出装置,其中,若被解压缩后的第N帧画面与被解压缩后的第N-1帧画面的数据相同,则所述数据比较模块进一步被构造为直接输出被解压缩后的第N帧画面。
  14. 根据权利要求8所述的显示画面的输出装置,其中,所述显示画面的输出装置应用于画面显示器的控制器中。
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