CN102142224B - Display device, uneven brightness correction method, correction data making device and correction data making method - Google Patents

Display device, uneven brightness correction method, correction data making device and correction data making method Download PDF

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CN102142224B
CN102142224B CN 201110033393 CN201110033393A CN102142224B CN 102142224 B CN102142224 B CN 102142224B CN 201110033393 CN201110033393 CN 201110033393 CN 201110033393 A CN201110033393 A CN 201110033393A CN 102142224 B CN102142224 B CN 102142224B
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revisal
mentioned
data
pixel
zone
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CN102142224A (en
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吉冈史善
片冈耕太郎
矢追善史
足立浩一郎
太田佳似
岩田浩
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Sharp Corp
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Sharp Corp
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Abstract

In a correction data storage part, correction data are storaged; the correction data comprises a deviation value of uneven brightness and grouping information; the deviation value of uneven brightness is a difference between a brightness value of each pixel or a brightness value of each pixel group when an image corresponding to image data for examination is displayed in a display picture and a rational brightness value of each pixel or each pixel group corresponding to the image data for examination; the grouping information is information for grouping correction regions corresponding to each region with uneven brightness based on the degree of the uneven brightness in each region with uneven brightness. In addition, when an image corresponding to image data for display is displayed in the display picture, a spacial dispersion processing part determines pixels for changing gray values contained in the correction region based on the grouping result for each correction region containedin the correction data.

Description

Display device, brightness disproportionation correction method, revisal data creating device and revisal data making method
Technical field
The present invention relates to a kind of technology of carrying out revisal for the brightness disproportionation to the display frame of display device.
Background technology
In the image display devices such as liquid crystal indicator or plasma scope, organic EL (electro-luminescence) display, because of the various reasons in its manufacturing process, produce the dark or bright brightness disproportionation of brightness that the display brightness on the picture is expected at the part ratio.
Brightness disproportionation is categorized as several kinds corresponding to its shape, but representationally have in the display frame strip of the brightness disproportionation that produces strip uneven, with the mottled inequality that produces the brightness disproportionation on the spot in the part.
For example, in the manufacturing process of small-sized fine liquid crystal panel, when after glass substrate is piled up amorphous silicon, by carrying out Ear Mucosa Treated by He Ne Laser Irradiation, exist uneven in the intensity distributions of the laser that uses when making the low recrystallized amorphous silicon of mobility and being changed to the much higher crystal silicon of mobility, then along the direction of scanning of laser, in polysilicon characteristic, produce inequality, consist of the reason of strip inequality.In addition, have various stray capacitances in the display device, but also to produce strip uneven owing to this parasitic capacitance value is uneven in the every line such as signal wire sometimes.
In addition, mottled inequality such as be because of the element thickness of display panel the characteristic of local and different, TFT (thin-film transistor) on every side local different, electrode pattern size local different, the alignment film pin hole exists in the part, pollute foreign matter the former thereby generation such as sneaks in the part.
Method as the revisal brightness disproportionation, for example in the patent documentation 1, put down in writing in the revisal liquid crystal indicator from the irradiation light light quantity of backlight corresponding to the distance of distance backlight different caused brightness disproportionation, by multiply by the revisal that image signal is realized brightness disproportionation corresponding to the coefficient of the distance of distance backlight.
In addition, in the patent documentation 2, put down in writing for the revisal brightness disproportionation and used look-up table (LUT).
Patent documentation 1: Japan openly speciallys permit communique ' JP 2000-253277 communique (open day: on 09 14th, 2000) ';
Patent documentation 2: Japan openly speciallys permit communique ' JP 2005-134560 communique (open day: on 05 26th, 2005) '.
But, in the technology of above-mentioned patent documentation 1, because without exception come revisal to belong to each pixel of perpendicular line corresponding to the distance of distance backlight, so the brightness disproportionation that occurs in the part on can not the revisal display panel.
On the other hand, in the method for the use LUT of above-mentioned patent documentation 2, in the situation that only has a kind of LUT that represents gray-scale value and revisal the relationship between quantities, both also provided identical revisal amount to dense brightness disproportionation to thin brightness disproportionation, the precision of uneven revisal can descend.In addition, in the situation that prepared multiple LUT, can cause the increase of data volume.
In addition, can be equipped on the normally very little capacity of capacity of the nonvolatile memory in the liquid crystal driver of small-scale liquid crystal panel.But, since large for the revisal data capacity of the brightness disproportionation that occurs in the part on the revisal liquid crystal panel, so usually be difficult to be stored in the nonvolatile memory of low capacity.
Summary of the invention
The present invention makes in view of the above problems, and its purpose is to come the local brightness disproportionation that occurs on the appropriate revisal display panel with the very little nonvolatile memory of capacity.
Display device of the present invention possesses for the display frame that shows corresponding to the image of display image data in order to address the above problem; The drive control part of show state with each pixel of the above-mentioned display frame of control, it is characterized in that: for when demonstration in the above-mentioned display frame is used the image of view data corresponding to inspection, the display brightness value from be at least a portion brightness disproportionation zone in the brightness disproportionation zone corresponding to above-mentioned inspection with the zone of the different image of the reasonable brightness value of view data, the revisal data that use is made of view data according to above-mentioned inspection, poor with corresponding to the reasonable brightness value of this display image data of brightness value when reducing to show the image corresponding to above-mentioned display image data, above-mentioned revisal data are used for the data that the above-mentioned display image data of revisal is the pixel that comprises in the revisal zone corresponding to the zone in above-mentioned at least a portion brightness disproportionation zone or the zone that comprises this brightness disproportionation zone and its outer peripheral areas, possesses the view data correcting section, when making image corresponding to above-mentioned display image data be shown in the above-mentioned display frame, the above-mentioned display image data of revisal, so that the gray-value variation of at least a portion pixel in the pixel that comprises in the above-mentioned revisal zone, the deviate and the grouping information that comprise the brightness disproportionation amount in the above-mentioned revisal data, the deviate of this brightness disproportionation amount be each pixel when being shown in the above-mentioned display frame corresponding to above-mentioned inspection with the image of view data brightness value or with each pixel by a plurality of pixels each brightness value that is divided into each pixel group with corresponding to poor with the reasonable brightness value of this each pixel of view data or this each pixel group of above-mentioned inspection; This grouping information is the degree according to the brightness disproportionation in each brightness disproportionation zone, will be corresponding to the information of the revisal group areas in each brightness disproportionation zone, above-mentioned view data correcting section is according to the group result to this each revisal zone, determine to make in above-mentioned each revisal zone the pixel of gray-value variation, the show state of above-mentioned each pixel of above-mentioned drive control part control is to show corresponding to the image by the display image data after the revisal of above-mentioned view data correcting section.
According to above-mentioned formation, the view data correcting section is for when demonstration in the display frame is used the image of view data corresponding to inspection, the display brightness value from be at least a portion brightness disproportionation zone in the brightness disproportionation zone corresponding to this inspection with the zone of the different image of the reasonable brightness value of view data, the revisal data that use is made of view data according to above-mentioned inspection, poor with corresponding to the reasonable brightness value of this display image data of brightness value when reducing to show the image corresponding to display image data, above-mentioned revisal data are used for the data that the revisal display image data is the pixel that comprises in the revisal zone corresponding to the zone in above-mentioned at least a portion brightness disproportionation zone or the zone that comprises this brightness disproportionation zone and its outer peripheral areas, when making image corresponding to display image data be shown in the above-mentioned display frame, the revisal display image data is so that the gray-value variation of at least a portion pixel in the pixel that comprises in the revisal zone.In addition, the deviate and the grouping information that comprise the brightness disproportionation amount in the above-mentioned revisal data, the deviate of this brightness disproportionation amount be each pixel when being shown in the above-mentioned display frame corresponding to above-mentioned inspection with the image of view data brightness value or with each pixel by a plurality of pixels each brightness value that is divided into each pixel group with corresponding to poor with the reasonable brightness value of this each pixel of view data or this each pixel group of above-mentioned inspection, this grouping information is the degree according to the brightness disproportionation in each brightness disproportionation zone, will be corresponding to the revisal group areas information in each brightness disproportionation zone, the view data correcting section determines to make in above-mentioned each revisal zone the pixel of gray-value variation according to the group result to this each revisal zone.
Like this, by the revisal zone of dividing into groups according to the deviate of brightness disproportionation amount, decide the pixel of revisal gray-scale value corresponding to group result, the situation of the pixel of each revisal zone revisal gray-scale value is compared corresponding to the brightness disproportionation amount in each revisal zone with not dividing into groups to come computing, can be cut down the data volume of revisal data.Therefore, for example can reduce the memory capacity when making the revisal data be stored in the regulation storage part, can use the few nonvolatile memory of memory capacity to be used as this storage part.
In addition, the brightness disproportionation amount differs widely in each display frame, but by dividing into groups according to the deviate of brightness disproportionation amount, even if the brightness disproportionation amount is different in each display frame, also can be corresponding to divide into groups each revisal zone in each display frame of the brightness disproportionation amount of each display frame.Therefore, can be according to the brightness disproportionation degree of each display frame, the local brightness disproportionation that occurs in the rationally revisal display frame.
But, in the technology of in above-mentioned patent documentation 1, putting down in writing, because the essential multiplier of the revisal of brightness disproportionation, so peripheral issue that existence can cause circuit scale to increase, and according to the present invention, owing to for example not using multiplier, only just can consist of correcting circuit by totalizer, so can solve above-mentioned peripheral issue yet.
In addition, display device of the present invention possesses for the display frame that shows corresponding to the image of display image data in order to solve above-mentioned problem; The drive control part of show state with each pixel of the above-mentioned display frame of control, it is characterized in that: for when demonstration in the above-mentioned display frame is used the image of view data corresponding to inspection, the display brightness value from be at least a portion brightness disproportionation zone in the brightness disproportionation zone corresponding to above-mentioned inspection with the zone of the different image of the reasonable brightness value of view data, the revisal data that use is made of view data according to above-mentioned inspection, poor with corresponding to the reasonable brightness value of this display image data of brightness value when reducing to show the image corresponding to above-mentioned display image data, above-mentioned revisal data are used for the data that the above-mentioned display image data of revisal is the pixel that comprises in the revisal zone corresponding to the zone in above-mentioned at least a portion brightness disproportionation zone or the zone that comprises this brightness disproportionation zone and its outer peripheral areas, possesses the view data correcting section, when making image corresponding to above-mentioned display image data be shown in the above-mentioned display frame, the above-mentioned display image data of revisal, so that the gray-value variation of at least a portion pixel in the pixel that comprises in the above-mentioned revisal zone, comprise basic revisal pattern-information in the above-mentioned revisal data, expression has been scheduled to make one or more basic revisal patterns of the gray-value variation of which pixel in the pixel that comprises in the zone of given size, and above-mentioned view data correcting section is by making above-mentioned basic revisal pattern combination with one another decide the pixel that makes gray-value variation in above-mentioned each revisal zone.
According to above-mentioned formation, by in the revisal data, comprising basic revisal pattern-information, this basic revisal pattern-information has represented to be scheduled to make one or more basic revisal patterns of the gray-value variation of which pixel in the pixel that comprises in the zone of given size, determine to make accordingly the pixel of gray-value variation, with do not come computing corresponding to the brightness disproportionation amount in each revisal zone the situation of the pixel of each revisal zone revisal gray-scale value to be compared with basic revisal pattern, can cut down the data volume of revisal data.In addition, by selecting the basic revisal pattern corresponding to the brightness disproportionation amount deviate in each revisal zone, can come the local brightness disproportionation that occurs in the reasonable revisal display frame according to the brightness disproportionation amount.
Brightness disproportionation correction method of the present invention is in order to solve above-mentioned problem, it is the brightness disproportionation correction method of the display frame brightness disproportionation in a kind of revisal display device, above-mentioned display device possesses for the above-mentioned display frame that shows corresponding to the image of display image data, it is characterized in that: comprise revisal data storage operation, for when demonstration in the above-mentioned display frame is used the image of view data corresponding to inspection, the display brightness value from be at least a portion brightness disproportionation zone in the brightness disproportionation zone corresponding to above-mentioned inspection with the zone of the different image of the reasonable brightness value of view data, the revisal data that storage is made of view data according to above-mentioned inspection, poor with corresponding to the reasonable brightness value of this display image data of brightness value when reducing to show the image corresponding to above-mentioned display image data, above-mentioned revisal data are used for the data that the above-mentioned display image data of revisal is the pixel that comprises in the revisal zone corresponding to the zone in above-mentioned at least part of brightness disproportionation zone or the zone that comprises this brightness disproportionation zone and its outer peripheral areas; View data revisal operation, when making image corresponding to above-mentioned display image data be shown in the above-mentioned display frame, according to the revisal data of storing in the above-mentioned revisal data storage operation, the above-mentioned display image data of revisal is so that the gray-value variation of at least a portion pixel in the pixel that comprises in the above-mentioned revisal zone; Control operation with driving, the show state of above-mentioned each pixel of control, to show corresponding to the image by the display image data after the revisal of above-mentioned view data revisal operation, the deviate and the grouping information that comprise the brightness disproportionation amount in the above-mentioned revisal data, the deviate of this brightness disproportionation amount be each pixel when being shown in the above-mentioned display frame corresponding to above-mentioned inspection with the image of view data brightness value or with each pixel by a plurality of pixels each brightness value that is divided into each pixel group with corresponding to poor with the reasonable brightness value of this each pixel of view data or this each pixel group of above-mentioned inspection; This grouping information is the degree according to the brightness disproportionation in each brightness disproportionation zone, will be corresponding to the information of the revisal group areas in each brightness disproportionation zone, in the above-mentioned view data revisal operation, according to the group result to this each revisal zone, determine to make in above-mentioned each revisal zone the pixel of gray-value variation.
According to said method, by the revisal zone of dividing into groups according to the deviate of brightness disproportionation amount, decide the pixel of revisal gray-scale value corresponding to group result, with the brightness disproportionation amount of not dividing into groups to set corresponding to each revisal zone the situation of the pixel of each revisal zone revisal gray-scale value is compared, can be cut down the data volume of revisal data.Therefore, for example can reduce the memory capacity when making the revisal data be stored in the regulation storage part, can use the few nonvolatile memory of memory capacity to be used as this storage part.
In addition, the brightness disproportionation amount differs widely in each display frame, but by dividing into groups according to the deviate of brightness disproportionation amount, even if the brightness disproportionation amount is different in each display frame, also can be corresponding to divide into groups each revisal zone in each display frame of the brightness disproportionation amount of each display frame.Therefore, can be according to the brightness disproportionation degree of each display frame, the local brightness disproportionation that occurs in the rationally revisal display frame.
In addition, brightness disproportionation correction method according to the present invention is in order to solve above-mentioned problem, it is the brightness disproportionation correction method of the display frame brightness disproportionation in a kind of revisal display device, above-mentioned display device possesses for the above-mentioned display frame that shows corresponding to the image of display image data, it is characterized in that: comprise revisal data storage operation, for when demonstration in the above-mentioned display frame is used the image of view data corresponding to inspection, the display brightness value from be at least a portion brightness disproportionation zone in the brightness disproportionation zone corresponding to above-mentioned inspection with the zone of the different image of the reasonable brightness value of view data, the revisal data that storage is made of view data according to above-mentioned inspection, poor with corresponding to the reasonable brightness value of this display image data of brightness value when reducing to show the image corresponding to above-mentioned display image data, above-mentioned revisal data are used for the data that the above-mentioned display image data of revisal is the pixel that comprises in the revisal zone corresponding to the zone in above-mentioned at least a portion brightness disproportionation zone or the zone that comprises this brightness disproportionation zone and its outer peripheral areas; View data revisal operation, when making image corresponding to above-mentioned display image data be shown in the above-mentioned display frame, according to the revisal data of storing in the above-mentioned revisal data storage operation, the above-mentioned display image data of revisal is so that the gray-value variation of at least a portion pixel in the pixel that comprises in the above-mentioned revisal zone; Control operation with driving, the show state of above-mentioned each pixel of control, to show corresponding to the image by the display image data after the revisal of above-mentioned view data revisal operation, comprise basic revisal pattern-information in the above-mentioned revisal data, this basic revisal pattern-information is used for specific one or more basic revisal patterns of being scheduled to make the gray-value variation of which pixel of pixel that comprises in the zone of given size, in above-mentioned view data revisal operation, decide the pixel that makes gray-value variation in above-mentioned each revisal zone by making by the specific above-mentioned basic revisal pattern combination with one another of above-mentioned basic revisal pattern-information.
According to said method, by in the revisal data, comprising basic revisal pattern-information, this basic revisal pattern-information has represented to be scheduled to make one or more basic revisal patterns of the gray-value variation of which pixel in the pixel that comprises in the zone of given size, determine to make accordingly the pixel of gray-value variation, with do not come computing corresponding to the brightness disproportionation amount in each revisal zone the situation of the pixel of each revisal zone revisal gray-scale value to be compared with basic revisal pattern, can cut down the data volume of revisal data.In addition, by selecting the basic revisal pattern corresponding to the brightness disproportionation amount deviate in each revisal zone, can come the local brightness disproportionation that occurs in the reasonable revisal display frame according to the brightness disproportionation amount.
The invention effect
Display device of the present invention as mentioned above, constitute the deviate and the grouping information that in above-mentioned revisal data, comprise the brightness disproportionation amount, the deviate of this brightness disproportionation amount be each pixel when being shown in the above-mentioned display frame corresponding to above-mentioned inspection with the image of view data brightness value or with each pixel by a plurality of pixels each brightness value that is divided into each pixel group with corresponding to poor with the reasonable brightness value of this each pixel of view data or this each pixel group of above-mentioned inspection, this grouping information is the degree according to the brightness disproportionation in each brightness disproportionation zone, will be corresponding to the information of the revisal group areas in each brightness disproportionation zone, above-mentioned view data correcting section determines to make in above-mentioned each revisal zone the pixel of gray-value variation according to the group result to this each revisal zone.
In addition, display device of the present invention as mentioned above, constitute and in above-mentioned revisal data, comprise basic revisal pattern-information, this basic revisal pattern-information has represented to be scheduled to make one or more basic revisal patterns of the gray-value variation of which pixel in the pixel that comprises in the zone of given size, and above-mentioned view data correcting section is by making above-mentioned basic revisal pattern combination with one another decide the pixel that makes gray-value variation in above-mentioned each revisal zone.
In addition, brightness disproportionation correction method of the present invention as mentioned above, constitute the deviate and the grouping information that in above-mentioned revisal data, comprise the brightness disproportionation amount, the deviate of this brightness disproportionation amount be each pixel when being shown in the above-mentioned display frame corresponding to above-mentioned inspection with the image of view data brightness value or with each pixel by a plurality of pixels each brightness value that is divided into each pixel group with corresponding to poor with the reasonable brightness value of this each pixel of view data or this each pixel group of above-mentioned inspection, this grouping information is according to the degree of the brightness disproportionation in each brightness disproportionation zone, will be corresponding to the revisal group areas in each brightness disproportionation zone, in above-mentioned view data revisal operation, according to the group result to this each revisal zone, determine to make in above-mentioned each revisal zone the pixel of gray-value variation.
In addition, brightness disproportionation correction method of the present invention as mentioned above, constitute and in above-mentioned revisal data, comprise basic revisal pattern-information, this basic revisal pattern-information has represented to be scheduled to make one or more basic revisal patterns of the gray-value variation of which pixel in the pixel that comprises in the zone of given size, in above-mentioned view data revisal operation, decide the pixel that makes gray-value variation in above-mentioned each revisal zone by making by the specific above-mentioned basic revisal pattern combination with one another of above-mentioned basic revisal pattern-information.
Therefore, realized rationally to work as the effect of the local brightness disproportionation that occurs on the revisal display panel with the very little nonvolatile memory of capacity.
Other purposes of the present invention, feature and advantage are apparent by the record shown in following.In addition, advantage of the present invention becomes clear in the following describes of reference accompanying drawing.
Description of drawings
Fig. 1 is the key diagram of the correction method of view data in the display device that represents according to an embodiment of the present invention.
Fig. 2 is the formation block diagram that represents revisal data creating device according to an embodiment of the present invention.
Fig. 3 is the curve of an example of the brightness data that extracts from camera data in the expression revisal data creating device shown in Figure 2 and the moving average calculated according to this brightness data.
Fig. 4 is the mean flow rate of brightness data after the brightness disproportionation impact of the smooth variation such as brightness disproportionation that backlight causes and display frame has been removed in expression from brightness data shown in Figure 3 curve.
Fig. 5 is the key diagram for the generation method that revisal data creating device revisal information shown in Figure 2 is described.
Fig. 6 (a) is the key diagram for the generation method that revisal data creating device revisal information shown in Figure 2 is described.
Fig. 6 (b) is the key diagram for the generation method that revisal data creating device revisal data shown in Figure 2 are described.
Fig. 7 is the key diagram of an example of revisal pixel (adjusting the revisal pixel) in the revisal data that generate in the expression revisal data creating device shown in Figure 2 and not revisal pixel (adjusting revisal pixel pixel in addition).
The curve of the moving average that Fig. 8 is the brightness data that extracts from camera data in the expression revisal data creating device shown in Figure 2, calculate according to this brightness data and an example of full brightness mean value.
Fig. 9 is the key diagram for the generation method that revisal data creating device revisal information shown in Figure 2 is described.
The process flow diagram of Figure 10 method that to be the revisal information that revisal data creating device shown in Figure 2 obtained for explanation record and narrate as the revisal data.
The process flow diagram of Figure 11 method that to be the revisal information that revisal data creating device shown in Figure 2 obtained for explanation record and narrate as the revisal data.
The process flow diagram of Figure 12 method that to be the revisal information that revisal data creating device shown in Figure 2 obtained for explanation record and narrate as the revisal data.
Figure 13 is the formation block diagram of the drive control part that is equipped with in the display device that represents according to an embodiment of the present invention.
Figure 14 is the key diagram of an example of the revisal pattern set in the expression drive control part shown in Figure 13.
Figure 15 is the curve of the brightness data before and after the revisal of expression brightness disproportionation is processed.
Figure 16 is the formation block diagram of expression revisal data creating device of another embodiment according to the present invention.
Figure 17 is the concept map of the correction method of the mottled inequality of expression.
Figure 18 is the formation block diagram of the drive control part that is equipped with in the display device of another embodiment according to the present invention of expression.
Figure 19 is the figure of R, G, the B of expression 4 * 4 sizes dither matrix of all kinds.
Figure 20 is the figure that the basic revisal pattern of 4 pixels * 4 pixel sizes is held in expression.
Figure 21 is the figure of revisal pattern that the array mode of basic revisal pattern shown in Figure 20 is shown.
Figure 22 is the key diagram of an example of the establishing method of revisal pattern in the drive control part shown in expression Figure 13 or 18.
Figure 23 represents according to the present invention the again formation block diagram of the revisal data creating device of an embodiment.
Figure 24 is the formation block diagram of the drive control part that is equipped with in the display device of an embodiment again according to the present invention of expression.
Symbol description
10,10b, 10c revisal data creating device
11 show the data generating unit
12 image pickup parts
13 brightness data extracting part
14,14b mobile horizontal homogenizing handling part
15,15b brightness disproportionation test section
16,16b revisal data generating unit
20,20b, the 20c display device
21 display panels
22,22b, the 22c driving control device
31,31b revisal data store
32,32b lsb decoder
33,33b spatial dispersion handling part (view data correcting section)
34,34b time dispersion treatment section (view data correcting section)
35 addition process sections (view data correcting section)
36 the 1st latch section
37 the 2nd latch section
38 D/A transformation components
39 revisal pattern storage parts (basic revisal pattern storage part).
Embodiment
Below, according to Fig. 1-Figure 24 one embodiment of the present invention is described.For the formation beyond the formation that illustrates in the following specific embodiment, in case of necessity, description thereof is omitted sometimes, and the situation of explanation is identical with this formation in other embodiments.
［ embodiment 1 ］
One embodiment of the present invention is described.In the present embodiment, illustrate that mainly the transmission type liquid crystal display device that is equipped with in the mobile model device such as portable phone namely is parallel to the example of strip inequality of the bearing of trend of source electrode line (data line) according to revisal direction in the display device that is shown by the existing RGB view data of all kinds of 6 bit tables.But applicable object of the present invention is not limited to this.
Fig. 2 is that expression is according to the revisal data creating device 10 of present embodiment and the formation block diagram of display device 20.As shown in the drawing, revisal data creating device 10 possesses the data of demonstration generating unit 11, image pickup part 12, brightness data extracting part 13, mobile horizontal homogenizing handling part 14, brightness disproportionation test section 15 and revisal data generating unit 16.In addition, display device 20 possesses display panel 21 and drive control part 22.
When in checking display panel 21, having or not brightness disproportionation, show that data generating unit 11 generates the demonstration data that are shown in this display panel, and output to the drive control part 22 of display panel 21.Usually, brightness disproportionation when the image of middle gray carries out evenly showing with same grayscale comprehensively easily by visual recognition.Therefore, in the present embodiment, show that data generating unit 11 is uneven for sensed luminance, generate the whole pixels that are used at display panel and show that the view data of the same grayscale image of middle gray namely checks and use view data.
The display surface of 12 pairs of display panels 21 of image pickup part is made a video recording, and obtains camera data, and the display surface of this display panel 21 shows corresponding to the image of being used view data by the inspection that shows 11 generations of data generating unit.As image pickup part 12, such as using CCD (charge-coupled device) video camera etc.
Brightness data extracting part 13 extracts brightness data from the camera data that image pickup part 12 is obtained.
Pixel set corresponding to the zone of the source electrode line of above-mentioned display frame the zone of the Rack of source electrode line bearing of trend (or be parallel to) in the brightness data that mobile horizontal homogenizing handling part 14 extracts with regard to brightness data extracting part 13 is the line pixel group, calculate the average brightness of each pixel that comprises in this line pixel group, as the brightness value of this line pixel group.In addition, mobile horizontal homogenizing handling part 14 is carried out the mobile horizontal homogenizing of calculating moving average and is processed, the brightness value of each pixel that namely comprises in the outer peripheral areas (for example, the zone of the 3mm width of the direction vertical with this line pixel group bearing of trend centered by this line pixel group) with the specialized range that comprises this line pixel group comes the brightness value of above-mentioned each the line pixel group of equalization.
Demonstration data generating unit 11 among Fig. 2, brightness data extracting part 13, mobile horizontal homogenizing handling part 14, brightness disproportionation test section 15, revisal data generating unit 16 may not be independently circuit of difference, as long as revisal data generating device 10 has these functions.For example, also can be all carry out these calculation functions by the CPU (central processing unit) of personal computer.That is, revisal data generating device 10 also can form by connecting as the Digital Video of image pickup part 12 and for the personal computer of carrying out above-mentioned each calculation function.
The solid line of Fig. 3 is the curve of the brightness value of brightness data that expression is extracted according to brightness data extracting part 13 each line pixel group of calculating, and dotted line is the curve of moving average of the brightness value of above-mentioned each the line pixel group of expression.Above-mentioned moving average is for the mild brightness disproportionation such as the brightness disproportionation removing backlight and cause and extract that easily to be recognized as uneven local luminance uneven and obtain, and expression is without the brightness of uneven state.The solid line of Fig. 4 is to the mean value (mean value of the brightness of display frame integral body) that deducts value after the above-mentioned moving average and add panel luminance from the brightness value of each line pixel group of Fig. 3, be the curve that the brightness value of each the line pixel group after the brightness disproportionation impact of the smooth variation such as brightness disproportionation that backlight causes has been removed in expression, dotted line is the curve of the mean value of expression panel luminance.Transverse axis in these each curves represents the position of each line pixel group, and the longitudinal axis represents the brightness value (mean value of brightness value that belongs to the pixel of each line pixel group) of each line pixel group.
Brightness value and its moving average of each line pixel group that brightness disproportionation test section 15 extracts from camera data according to brightness data extracting part 13 detect the zone that produces brightness disproportionation.
Particularly, the brightness value of each line pixel group and its moving average is poor in the brightness data that the brightness data extracting part 13 of calculating brightness disproportionation test section 15 extracts from camera data, the absolute value of the difference that detection is calculated is the zone more than or equal to the set formation of the line pixel group of defined threshold, as brightness disproportionation (brightness disproportionation zone).That is, the reasonable brightness value the when moving average of the brightness value of each line pixel group is considered as this each line pixel group and does not generate brightness disproportionation is compared with the brightness value of each line pixel group, detects thus the zone that produces brightness disproportionation.Thus, can remove the impact etc. of backlight after, sensed luminance is uneven rightly.
Namely, in transmission type liquid crystal display device, although usually in order to possess diffuser plate etc. to the display panel uniform irradiation from the irradiation light of backlight, but owing to being difficult to complete homogenising, so sometimes corresponding to the relative relative position of backlight, in the brightness from the irradiation light of backlight, produce deviation.But, because the wide region that the Luminance Distribution that the relative position of relative backlight causes spreads all over display panel is than smooth variation (with reference to the inclination angle of the dotted line part among Fig. 3), so seldom visual recognition is brightness disproportionation.That is, what human eye was recognized as brightness disproportionation is the large situation of brightness localized variation, the space with large cycle brightness continually varying situation under, almost illegible is uneven.The luminance difference visual recognition that therefore, seldom will cause from the Luminance Distribution of the irradiation light of backlight is brightness disproportionation.
On the other hand, the brightness value that will not produce the reasonable zone of brightness disproportionation if do not consider the impact of backlight is considered as steady state value in the Zone Full of display frame, then sometimes will be not be that the zone of brightness disproportionation is detected and is brightness disproportionation by visual recognition, or will be that the zone of brightness disproportionation is detected and is reasonable zone by visual recognition.That is the brightness value (rationally brightness value) that, does not generate the reasonable zone of brightness disproportionation is according to the position on the display panel and difference.
Therefore, in the present embodiment, the brightness data that 14 pairs of brightness data extracting part of mobile horizontal homogenizing handling part 13 extract is implemented the mobile horizontal homogenizing and is processed, and the brightness value (rationally brightness value) the when moving average of the brightness value of each line pixel group is considered as this each line pixel group for reasonable zone.Thus, can remove the impact from the Luminance Distribution of the irradiation light of backlight, and easy visual recognition is brightness disproportionation, appropriately and easily detects with the difference zone jumpy of the brightness of neighboring region and be brightness disproportionation.
Use the detection of the brightness disproportionation of moving average can be when effective detection easily allows the brightness disproportionation of human eye identification, because parsing computing that needn't be complicated, so the energy high speed processing, and can realize high throughput with the arithmetic facility of the cheapnesss such as personal computer.
The scope (scope of the direction vertical with the bearing of trend of line pixel group) of equalization was much wider than the width in strip brightness disproportionation zone during the mobile horizontal homogenizing was processed, and preferably was set in this scope everybody and was set up the difference scope that the deviation of the reasonable brightness value of brightness value becomes enough little from the brightness disproportionation zone relatively from the brightness value of the irradiation light of backlight.
In moving average is processed in the too small situation of the scope of equalization, when the difference of the brightness of getting each line pixel group and its moving average, can not fully detect the brightness disproportionation of easy visual recognition.This can cause the distribution of the brightness disproportionation of each line pixel group excessively to be reflected in the distribution of moving average.
On the other hand, if moving average process in the scope of equalization when wide, also can be detected as brightness disproportionation even if then be difficult to the brightness disproportionation that the backlight of visual recognition causes.At this moment, will carry out in the situation of datumization for the information of revisal brightness disproportionation, it is very large that data volume can become, and causes cost to rise.Therefore, in the situation of the display panel about the hundreds of pixels that in the mobile devices such as portable phone, are equipped with * hundreds of pixels, preferably be set as more than or equal to 1mm, less than or equal to the scope of 5mm, be made as reasonable brightness value by getting moving average with the width of the numerical value of this scope, can effectively detect the brightness disproportionation by human eye vision understanding.In the present embodiment, use the display panel 21 of 360 pixels * 480 pixels, establishing above-mentioned scope is 3mm.
The information of the brightness disproportionation that revisal data generating unit 16 detects according to brightness disproportionation test section 15 generates the revisal data of the brightness disproportionation that is used for being difficult to visual recognition.These revisal data are outputed to the drive control part 22 of display device 20, be kept in the storage part of drive control part 22 inside, the view data that circuit in the drive control part 22 is processed the image that will show according to these revisal data can be carried out image in the inconspicuous mode of brightness disproportionation and be shown.That is, the revisal data record and narrate to the circuit of drive control part 22 which kind of revisal is which pixel on the display panel 21 carried out, and generate according to uneven regional position and the uneven intensity of answering revisal.Also can be, in the situation of difference less than the stipulated standard value of the peak value of the brightness value of the line pixel group that in the brightness disproportionation zone, comprises and reasonable brightness value, be considered as not existing the brightness disproportionation of strip, not provide revisal to this zone.
In the present embodiment, as mentioned above, use according to showing the display device 20 that RGB view data of all kinds shows with 6.In this low gray scale panel, only by regulate merely the gray scale of display image data according to the testing result of brightness disproportionation, rationally revisal brightness disproportionation sometimes.If this be because the panel of 6 gray scales of minimum value of deviation of brightness value that is recognized as brightness disproportionation then less than the brightness value that is equivalent to the ash tolerance of 1 in the display image data, if for example as wanting the dark brightness disproportionation of revisal, revisal to become data are improved 1 gray scale, then revisal amount is excessive, visual recognition is bright brightness disproportionation, or opposite, if as wanting the bright brightness disproportionation of revisal, revisal to become data are reduced by 1 gray scale, then visual recognition is dark brightness disproportionation.
Therefore, must take a kind of correction method of view data, even if the deviation of the brightness of relatively reasonable brightness value, also is difficult to the brightness disproportionation that visual recognition causes for the deviation of this brightness less than the brightness value of the 1 ash tolerance that is equivalent to view data.
Fig. 5 is be used to taking this correction method, being used for the key diagram that explanation shows uneven analytic method.Particularly, Fig. 5 be expression to each pixel respectively display gray shade value 9,10,11 inspection with view data, according to showing corresponding to the camera data after display panel 21 shootings of the image state of these each gray-scale values, the curve of the brightness value of each the line pixel group that is drawn into and the mean value of panel luminance.Among Fig. 5, the processing the same with Fig. 4 implemented in expression, the brightness value of each the line pixel group after the brightness disproportionation impact of the smooth variation such as brightness disproportionation that the removal backlight causes.
The absolute value of poor (the brightness disproportionation amount) of the brightness value of relatively reasonable brightness value is brightness disproportionation in the brightness data that brightness disproportionation test section 15 will extract from camera data for the part more than or equal to defined threshold detects.Particularly, be to be bright inequality on the occasion of, absolute value for the part more than or equal to threshold value detects with above-mentioned difference, be that negative value, absolute value are dark inequality for the part more than or equal to threshold value detects with above-mentioned difference.In the example of Fig. 5, it is bright brightness disproportionation that the part shown in C1, the C2 is detected, and the part shown in D1, the D2 is detected be dark brightness disproportionation.
Then, the value of each brightness disproportionation part of brightness disproportionation test section 15 detections and reasonable brightness value is poor.In the example of Fig. 5, brightness disproportionation C1, C2, D1, D2 are detected respectively poor c1, c2, d1, d2.
In addition, the brightness disproportionation test section 15 reasonable part brightness value and the benchmark gray-scale value that compares that detect the view data of the difference A of brightness value and the reasonable part brightness value of the view data of relative datum gray-scale value of reasonable part of view data of high 1 gray scale of benchmark gray-scale value that compares and relative datum gray-scale value hangs down the difference B of reasonable part brightness value of the view data of 1 gray scale.
Afterwards, 15 couples of bright brightness disproportionation C1, C2 of brightness disproportionation test section calculate respectively above-mentioned poor c1, the c2 of this brightness disproportionation and ratio c1/B, the c2/B of above-mentioned poor B, and dark brightness disproportionation D1, D2 are calculated respectively above-mentioned poor d1, the d2 of this brightness disproportionation and ratio d1/A, the d2/A of above-mentioned poor A.
Calculate the result according to these, determine rational view data correction method.
To bright brightness disproportionation above-mentioned than (c1/B, c2/B etc.) be less than or equal to 1 situation under, by the revisal of carries out image data, to in the pixel that belongs to the line pixel group corresponding with bright brightness disproportionation, reduce by 1 gray scale corresponding to the display image data to the pixel (adjusting the revisal pixel) of the ratio of the above-mentioned ratio of this brightness disproportionation, can be difficult to visual recognition for uneven.
In addition, in the situation that above-mentionedly surpass 1 than (c1/B, c2/B etc.), by the revisal of carries out image data, to reduce without exception to the display image data of the pixel that belongs to the line pixel group corresponding with bright brightness disproportionation the gray-scale value corresponding to the integral part of above-mentioned ratio, simultaneously, to reduce again 1 gray scale to the display image data of the pixel of the ratio corresponding with the fraction part of above-mentioned ratio (adjusting the revisal pixel), and can be difficult to visual recognition for uneven.
But, if than (c1/B, c2/B etc.), actual in the respectively revisal of each line pixel group according to above-mentioned, then because the value of the above-mentioned ratio of whole line pixel groups is essential when revisal, become large so worry the memory span that should store these values, the revisal computing also complicates in addition.Therefore, in the present embodiment, not directly to carry out revisal according to the value of the ratio (c1/B, c2/B etc.) of inequality as mentioned above, but use each line pixel group, according to above-mentioned value than (c1/B, c2/B etc.), carry out the method stage by stage based on uneven intensity, as better method.Be described with Fig. 6 (a).
Fig. 6 (a) is the expression position that generates bright brightness disproportionation and curve to an example of the relation of the value of the above-mentioned ratio of this each brightness disproportionation.
Like this, present embodiment is characterised in that, when deciding correction method from the brightness disproportionation analysis result, is several stages with the intensity Rational Classification of the brightness disproportionation in each line pixel group.In the example of Fig. 6 (a), be categorized as for 4 stages, for example, under above-mentioned value than (c1/B, c2/B etc.) is distributed in situation between the 0-0.50, the line pixel group of above-mentioned ratio more than or equal to 0.10, less than 0.20 is categorized as uneven intensity 1, line pixel group more than or equal to 0.20, less than 0.30 is categorized as uneven intensity 2, line pixel group more than or equal to 0.30, less than 0.40 is categorized as uneven intensity 3, the line pixel group more than or equal to 0.40, less than or equal to 0.50 is categorized as uneven intensity 4.In addition, with regard to above-mentioned value than (c1/B, c2/B etc.) less than with regard to 0.10, because inequality is basically unobvious, so ignore here.
In addition, to each uneven intensity, determine and distribute its correction method of revisal.In the example of Fig. 6 (a) and since line pixel group above-mentioned that is categorized as uneven intensity 1 than (c1/B, c2/B etc.) for more than or equal to 0.10, less than 0.20, be the representative rate value of uneven intensity 1 so establish as 0.15 of intermediate value.Equally, respectively uneven intensity 2,3,4 representative rate value are made as 0.25,0.35,0.45.As long as with near the value the central authorities in each stage, and be the mode of simple ratio of integers (value of molecule and denominator is not too large) as far as possible with the ratio of mark statement time-division and denominator, determine that rationally this representative rate value gets final product.For example, as to uneven intensity 1,2,3,4 the value that respectively represents ratio, also can replace above-mentioned value, use respectively the value of 1/7 (=～0.14), 1/4 (=0.25), 1/3 (=～0.33), 1/2 (=0.50).
Afterwards, come each line pixel group is carried out revisal as long as represent rate value with these.Namely, for example use 1/7,1/4,1/3,1/2 value as the situation to uneven intensity 1,2,3,4 the value that respectively represents ratio under, to being categorized as the line pixel group of uneven intensity 1, according to representing rate value 1/7, carry out the gray scale of view data is reduced the revisal of 1 gray scale with the ratio of 1 pixel in 7 pixels.Uneven intensity 2,3,4 is also carried out the gray scale of view data is reduced the revisal of 1 gray scale with each ratio of 1 pixel in 1 pixel, 2 pixels in 1 pixel, 3 pixels in 4 pixels respectively.
Fig. 7 is the location of pixels example of revisal is carried out in expression to the pixel of the line pixel group of the brightness disproportionation that is equivalent to uneven intensity 2 key diagram, to the pixel that comprises in this line pixel group, with the ratio of 1 pixel in 4 pixels, the gray scale of view data being carried out the view data that should show reduces the revisal of 1 pixel.
Among Fig. 7, in the source electrode line pixel in the paper above the pixel of the 1st (top the 1st pixel in the drawing in the above-below direction) be the revisal pixel, below, per 4 pixel arrangement revisal pixels.But not necessarily so, the ratio of importantly revisal pixel is 1 pixel in 4 pixels, also can be from top to bottom since the 2nd pixel successively per 4 pixels as the revisal pixel, also can be since the 3rd pixel or the 4th pixel.Which preferably take pixel as initial revisal pixel (side-play amount) when each scanning of display frame, be changed from top to bottom.Thus, can the specific pixel of not revisal, disperse the revisal pixel on the time, the whole revisal of accepting 1/4 gray scale of source electrode line more is difficult to the revisal of visual recognition inequality.
For the brightness disproportionation zone large to poor (with the deviation of reasonable brightness value) of reasonable brightness value, it is large that the pixel ratio of revisal display image data 1 gray scale becomes, and namely the pixel of revisal display image data 1 gray scale becomes close.On the other hand, for the brightness disproportionation zone less to the difference of reasonable brightness value, the pixel ratio of revisal display image data 1 gray scale diminishes, and namely the pixel of revisal display image data 1 gray scale becomes thin.
By view data is carried out this revisal, show the uneven gray modulation that causes owing to can offset, show uneven so can be difficult to visual recognition.
The representative rate value in each uneven intensity stage is less than or equal to 0.5 in above-mentioned example, but also can carry out same revisal in 0.5 the situation of surpassing.For example, be set as at the representative rate value with certain uneven intensity stage in 3/5 the situation, as long as to belonging to the line pixel group in this inequality intensity stage, 3 pixels in 5 pixels reduced by 1 gray scale with view data get final product.
In addition, representative rate value in certain uneven intensity stage surpasses in 1 the situation, as long as to belonging to the line pixel group in this inequality intensity stage, to reduce without exception corresponding to the display image data of the pixel of this line pixel group the gray-scale value corresponding to the integral part of above-mentioned representative rate value, simultaneously, to the pixel of the ratio corresponding with the fraction part of above-mentioned representative rate value, the gray scale of the display image data of correspondence is reduced by 1 gray scale again get final product.For example, represent the line pixel group that rate value is uneven intensity stage of 4/3 to belonging to, as long as will reduce by 2 gray scales with 1 pixel in 3 pixels corresponding to the display image data of the pixel of this line pixel group, simultaneously, rest of pixels reduces by 1 gray scale and gets final product.
Perhaps, surpass correction method in 1 the situation, also following method as the representative rate value in certain uneven intensity stage.That is, carry out following revisal, namely available divided by above-mentioned than the time result of division be less than or equal to 1 several n more than 2 divided by above-mentioned ratio, will reduce the n gray scale to the display image data of the pixel (adjusting the revisal pixel) of the ratio corresponding with this result of division.For example, representative rate value in certain brightness disproportionation intensity stage is in the situation of 1.25 (=5/4), also can calculate with n=2 except later value (5/4 ÷ 2=5/8), corresponding to this result of division, ratio with 5 pixels in 8 pixels reduces the revisal of 2 gray scales.
More than described the correction method to bright brightness disproportionation, but also can carry out equally the correction method of dark brightness disproportionation.That is, as described in using Fig. 5, even if with regard to dark brightness disproportionation, also can be according to d1, d2 ... value d1/A, d2/A with the ratio of A ... value, to the pixel that comprises in each line pixel group, the display image data of the pixel of this ratio is improved 1 gray scale, do not make brightness disproportionation obvious.But as better embodiment, even if to dark brightness disproportionation, also desirable execution is based on the method stage by stage of uneven intensity.
That is, by the method the same with Fig. 6 (a), the above-mentioned of each line pixel group is categorized as the rational stage about 4 stages than (d1/A, d2/A etc.).Afterwards, to each stage, set and represent rate value, use this representative rate value, carry out the revisal of display image data.Particularly, as long as the correction method to bright inequality according to the above description carries out getting final product.Namely, as long as the representative rate value in each stage is the intermediate value in this stage, the value of setting molecule and denominator and be simple ratio of integers gets final product, and to the display image data corresponding with the line pixel group that belongs to this stage, improves 1 gray scale as long as will be equivalent to the data of pixel of the ratio of this representative rate value.Especially the representative rate value in certain uneven stage surpasses in 1 the situation, as long as will improve without exception corresponding to the display image data of the pixel of this line pixel group the gray-scale value corresponding to the integral part of above-mentioned representative rate value, simultaneously, to the pixel of the ratio corresponding with the fraction part of above-mentioned representative rate value, the gray scale of the display image data of correspondence is improved 1 gray scale again get final product.Perhaps, also can carry out following revisal, namely use divided by above-mentioned than the time result of division for less than or equal to 1 severals n 2 or more divided by above-mentioned ratio, will be to the display image data raising n gray scale of the pixel (adjustment revisal pixel) of the ratio corresponding with this result of division.
Like this, in the present embodiment, not to carry out revisal according to the value itself behind the brightness disproportionation of resolving each line pixel group, but execution is corresponding to the grouping of brightness disproportionation, according to the representative rate value to this each grouping and setting, carry out revisal, thus, can reduce to record and narrate the data volume of the revisal data of correction method.The number of stages of grouping is more, then can provide the revisal near the value of the ci/B behind the parsing brightness disproportionation or dj/A, but the size of revisal data correspondingly becomes large.On the other hand, if the number of stages of grouping is few, the amplitude of then distributing to the numerical value of the ci/B in certain uneven intensity stage or dj/A becomes large, the line pixel group of the inequality that comprises in this amplitude all according to identical representative rate value by revisal, institute thinks rough approximation, but the size of revisal data can reduce.
Therefore, use the result of actual liquid crystal panel research, confirmed that bright inequality, dark inequality can both with the grouping in 4 stages, be difficult to abundant visual recognition brightness disproportionation ground and carry out revisal.Record and narrate the revisal data of correction method and belong to which uneven intensity stage as long as record and narrate each line pixel group, so if 4 stages then show with 2 and get final product.Therefore, compare with the value itself of datumization ci/B or dj/A, can significantly cut down data volume.
And, in the explanation of above-mentioned brightness disproportionation detection method, described calculating of moving average shown in Figure 3 and preferably got more than or equal to 1mm, less than or equal to the mean value of 5mm scope, but this scope is for being also significant in the few like this number of stages of 4 stages with grouping and setting.Be described with Fig. 8.
Fig. 8 is the distribution example of the wire brightness disproportionation when monochromatic single gray scale shows in certain liquid crystal panel, and the position of establishing on the liquid crystal panel with the line vertical direction is transverse axis, and the brightness value of this locational line pixel group is the longitudinal axis, represents with solid line.In addition, when dotting its moving average, represent that with dot-and-dash line whole brightness is average.
Suppose unlike present embodiment, getting moving average the average brightness (dot-and-dash line) of picture integral body to be set as in the situation of reasonable brightness value, in the uneven intensity as the difference analysis of this reasonable brightness value and intrinsic brilliance value, comprise the local luminance of easy visual recognition uneven with based on backlight unequal, spread all over these two aspects of inequality that relative broad range is difficult to visual recognition gently.In addition, human eye is difficult to the mild inequality that visual recognition spreads all over wide region, but the position dependence of brightness value is often very large.
In the example of Fig. 8, find to have the whole tendency dark, that rise to the brightness of paper right side of the brightness in paper left side.In addition, about this place finds that brightness is fluctuateed slightly.Here, the brightness that is not the latter of the easy visual recognition of a human eye side slightly up and down.Namely, with the average brightness (dot-and-dash line) of picture integral body as reasonable brightness value, detect in the situation of brightness disproportionation intensity, in this inequality intensity level, the contribution of inequality that is difficult to the wide region of visual recognition becomes large, and the easy local uneven contribution meeting less of visual recognition.In addition, in the method for utilizing Fig. 6 (a), be divided into the rational stage and in the situation of packetizing, following problem occur.
The value of the brightness disproportionation that the method for Fig. 6 (a) has the line pixel group with rational width stage by stage, the line pixel group that this brightness disproportionation was comprised in the stage carries out approximately uniform revisal.Therefore, having each other luminance difference at the line pixel group that approaches, even if visual recognition is the wire brightness disproportionation, also is the uneven stage of same brightness with its all classification, and identical revisal is provided.Therefore, basically can not reduce line pixel luminance difference each other, the brightness disproportionation of the residual visual recognition of meeting.In order to prevent this situation, offset local uneven revisal, must be stage by stage trickleer, the result, the data size that is used for the revisal data of record correction method can become large.
On the other hand, in the present embodiment, the moving average shown in the dotted line of use Fig. 8 is as reasonable brightness value, and the difference of establishing this value and intrinsic brilliance is brightness disproportionation intensity.That is, be characterised in that the following method of taking, namely to liquid crystal panel target setting brightness value not at first, but according to the actual brightness value of obtaining, define this moving average as reasonable brightness value.As shown in Figure 8, rationally brightness value is also held location-based distribution, and main reflection spreads all over the distribution of the mild inequality of wide region.By relatively this reasonable brightness value and intrinsic brilliance and get difference, can effectively detect the local uneven of easy visual recognition.In addition, because can effectively detect the inequality of easy visual recognition, even if so carry out Fig. 6 (a) stage by stage, approximate revisal is provided, also can make Luminance Distribution near the mild distribution shown in the dotted line of Fig. 8, as a result, can be with the few revisal data volume easy visual recognition of revisal local uneven effectively, and make it unobvious.
Get on the panel of moving average width as mentioned above, be preferably more than or equal to 1mm, less than or equal to 5mm.For example, calculating with 3mm in the present embodiment of the width on the panel of getting moving average, even if with Fig. 6 (a) such based on brightness disproportionation stage by stage, according to bright inequality, the dark few like this number of stages of 4 stages that is not divided into respectively, also can effectively carry out revisal, local inequality be become be difficult to by visual recognition.
On the other hand, get the width of moving average less than 1mm, local inequality can affect the distribution of the average reasonable brightness value of the movement-based shown in the dotted line, even if revisal becomes to approach this reasonable brightness value, also worries the inequality of the residual visual recognition of meeting.
In addition, if the Width 5mm that gets on the panel of moving average is large, then as described like that with Fig. 8, worry the problem that generation is the same with situation take the ensemble average value as benchmark.Namely, because the brightness of wide region is reflected to reasonable brightness value, distribute too average, so be difficult to visual recognition is reflected to the detected uneven intensity of difference of the reasonable brightness value of conduct and intrinsic brilliance value for the Luminance Distribution of the wide region of inequality value, easily the local uneven contribution meeting of visual recognition reduces relatively.
Because this reason, if not careful setting Fig. 6 (a) stage by stage, then the effective inequality of revisal visual recognition causes the increase of revisal data volume.That is, the best way is, in the inequality of effective detection and revisal visual recognition, do not detect the inequality that not revisal is difficult to visual recognition, from this point, preferably with more than or equal to 1mm, get moving average less than or equal to the width of 5mm, it is made as reasonable brightness value.
In above-mentioned, the example that the representative rate value in each brightness disproportionation stage and the ratio of adjusting the revisal pixel is made as identical value has been described.But, be not limited to this, for example also can be according to set the ratio of adjusting the revisal pixel to the value that represents rate value and multiply by predetermined augmenting factor.
In addition, above-mentioned augmenting factor also can be set corresponding to the gray-scale value of display image data.For example, as mentioned above, brightness disproportionation,, is difficult to by visual recognition in the situation that approaches black and white demonstration easily by visual recognition in middle gray.Therefore, also the above-mentioned augmenting factor under the middle gray can be set greatlyr than the above-mentioned augmenting factor that approaches under the black and white gray scale.
When bright brightness disproportionation is carried out above-mentioned grouping, 16 pairs of each pixels of revisal data generating unit (or each pixel group) are calculated the reasonable brightness value of the brightness value of each pixel in the brightness data that extracts (or each gathers each pixel group each pixel after by a plurality of pixels) and this each pixel (or this each pixel group) from camera data difference is the brightness disproportionation amount, calculate the deviate (standard deviation of brightness disproportionation amount) of this brightness disproportionation amount, with to the reasonable brightness value of the view data of benchmark gray-scale value with to the difference B of the reasonable brightness value of the view data that the is lower than benchmark gray-scale value 1 gray scale deviate divided by the brightness disproportionation amount of calculating, thus, deviate (standard deviation of the brightness disproportionation amount after gray scale converts) σ according to the brightness disproportionation amount after the gray scale conversion carries out the grouping in each brightness disproportionation zone.
Particularly, according to the brightness value in each brightness disproportionation zone of extracting the resulting camera data of display frame of inspection with the image demonstration of view data that makes from shooting corresponding to the benchmark gray-scale value and corresponding to the difference ci of this inspection with the reasonable brightness value of view data; To the reasonable brightness value of the view data of benchmark gray-scale value and difference B to the reasonable brightness value of the view data that is lower than benchmark gray-scale value 1 gray scale; The deviate σ of the above-mentioned brightness disproportionation amount after converting with gray scale divides into groups.For example, the as described below grouping.
The example (1) of grouping
Revisal intensity 1 ci/B is more than or equal to 0.4 σ, less than 0.8 σ
Revisal intensity 2 ci/B are more than or equal to 0.8 σ, less than 1.2 σ
Revisal intensity 3 ci/B are more than or equal to 1.2 σ, less than 1.6 σ
Revisal intensity 4 ci/B are more than or equal to 1.6 σ.
The strip brightness disproportionation of display panel differs widely by each display panel.That is, above-mentioned σ is large in the display panel that the brightness disproportionation degree is large (being the obvious panel of brightness disproportionation), and above-mentioned σ is little in the display panel that the brightness disproportionation degree is little (being the panel that brightness disproportionation is difficult to be familiar with).Therefore, above-mentioned σ also can be used for having or not in the judgement of strip brightness disproportionation.That is, if above-mentioned σ is less than or equal to setting, then can be judged as without the strip brightness disproportionation.
By take will be as mentioned above the deviate σ of the brightness disproportionation amount of gray scale when converting as benchmark divide into groups (for example being grouped into the grouping of 5 kinds of degree), the panel both sides that the panel that the brightness disproportionation degree is large and brightness disproportionation degree are little all can divide into groups well.
Deviate σ that Fig. 6 (a) expression is calculated as mentioned above, the brightness disproportionation amount when gray scale converts is the grouping example of 0.25 display panel.Because the zone of revisal intensity 1 is more than or equal to 0.4 σ, less than 0.8 σ, so be revisal intensity 1 with the brightness disproportionation territorial classification of above-mentioned ratio more than or equal to 0.10, less than 0.20.Equally, be revisal intensity 2 with the brightness disproportionation territorial classification of above-mentioned ratio more than or equal to 0.20, less than 0.30, being revisal intensity 3 with the brightness disproportionation territorial classification of above-mentioned ratio more than or equal to 0.30, less than 0.40, is revisal intensity 4 with above-mentioned ratio more than or equal to 0.40 brightness disproportionation territorial classification.
In addition, for the brightness disproportionation of revisal intensity 1 zone, be 0.15 as long as it represent the median that rate value is made as its grouping, the revisal of carrying out gray scale is reduced by 1 gray scale with the ratio of 3 pixels in 20 pixels gets final product.But, also can near median namely 0.15 value and with less ratio of integers represent 1/7 as representing rate value, at this moment, need only and carry out gray-scale value is reduced the revisal of 1 gray scale with the ratio of 1 pixel in 7 pixels.For example, in the position corresponding to the ck shown in Fig. 6 (a), the value of ck/B is 0.12, so be categorized as revisal intensity 1, carries out gray-scale value is reduced the revisal of 1 gray scale with the ratio of 1 pixel in 7 pixels.
Revisal intensity 2,3,4 represents median that rate value is made as grouping namely 0.25,0.35,0.45 with it too, gets final product with the revisal that namely ratio of 5 pixels, 7 pixels, 9 pixels reduces by 1 gray scale in 20 pixels of this ratio.Perhaps, also can by its approximate value and with less ratio of integers represent 1/4,1/3,1/2 as representing rate value, reduce respectively the revisal of 1 gray scale with the ratio of 1 pixel in 1 pixel, 2 pixels in 1 pixel, 3 pixels in 4 pixels.For example, in the position corresponding to cl, because the value of cl/B is 0.29, be categorized as revisal intensity 2, therefore, represent rate value according to this, carry out gray-scale value is reduced the revisal of 1 gray scale with the ratio of 1 pixel in 3 pixels.In the position corresponding to cm, because the value of cm/B is 0.42, be categorized as revisal intensity 4, therefore, represent rate value according to this, carry out gray-scale value is reduced the revisal of 1 gray scale with the ratio of 1 pixel in 2 pixels.In the position corresponding to cn, because the value of cn/B is 0.37, so be categorized as revisal intensity 3, carry out gray-scale value is reduced the revisal of 1 gray scale with the ratio of 1 pixel in 3 pixels.
Like this, the line pixel group for the ci/B value that comprises in certain scope carries out revisal with same ratio to pixel, the pixel of the approximate ratio that revisal is different from actual ci/B value.But, as mentioned above, owing to adopt the uneven detection method of the movement-based method of average, so can effectively extract the inequality of easy visual recognition.Therefore, also can make inequality unobvious by this approximate method.
As mentioned above, by grouping brightness disproportionation zone, record and narrate correction method and can also be few capacity to the revisal data of the correcting circuit indication correction method in the liquid crystal.This is because because the brightness disproportionation of same packets zone can be suitable for identical revisal data, so can reduce the kind of revisal data.Therefore, can reduce the capacity of the revisal data of storage usefulness in the revisal data store 31 that is equipped with in the drive control part 22 of display device 20.
Like this, above-mentioned revisal data are for example by consisting of corresponding to the source electrode line (positional information in revisal zone) of brightness disproportionation and grouping information to this source electrode line.
In addition, in the above description, revisal data generating unit 16 only the pixel in the brightness disproportionation zone that detects as the revisal object, but be not limited to this, the pixel that also can comprise the zone of brightness disproportionation zone and its outer peripheral areas (for example scope apart from about brightness disproportionation several pixels of zone or the number mm) is the revisal object.That is, both can with the brightness disproportionation zone as the revisal zone, also can will comprise the zone of brightness disproportionation zone and its outer peripheral areas as the revisal zone.Like this, by in the revisal zone, comprising outer peripheral areas, can blur the profile in brightness disproportionation zone, more be difficult to visual recognition brightness disproportionation zone.
In addition, the whole brightness disproportionations zone that may not revisal detects, in the brightness disproportionation zone that also only revisal detects a part of brightness disproportionation zone.For example, also can according to the size in brightness disproportionation zone or with the degree of the deviation of reasonable brightness value etc., only extract the brightness disproportionation zone of easy visual recognition and carry out revisal.
In addition, the making of above-mentioned revisal data can be that 16 couples of R of revisal data generating unit (Red), G (Green), each secondary image element of B (Blue) are calculated respectively, but as best mode, also can generate the revisal data to 1 look among R, G, the B (for example G), it is common to its allochromatic colour.Because in most cases the strip brightness disproportionation recurs in the zone of specialized range, even if so will be applicable to the revisal data that 1 look among R, G, the B generates the secondary image element of its adjacent allochromatic colour, with R, G, the B situation that generates separately respectively the revisal data of all kinds are compared, the degree of image quality does not change substantially yet.In addition, by to R, G, the common revisal data of B use of all kinds, with the situation of the independent revisal data of these generations of all kinds is compared, can reduce in the display device 20 described later the revisal data store 31 desired memory capacity that are used for storage revisal data that are equipped with.
The description method of revisal data is described here.
As mentioned above, in the present embodiment, do not carry out revisal with the value of uneven intensity itself, and utilize uneven intensity to be categorized as several stages, identical correction method is used in the uneven zone that belongs to this stage, so as long as which revisal intensity informationization provides to which uneven zone.If revisal intensity was 4 stages, then can show with 2.For example, revisal intensity 1 can be recorded and narrated and be ［ 00 ］, revisal intensity 2 is recorded and narrated be ［ 01 ］, revisal intensity 3 is recorded and narrated be ［ 10 ］, revisal intensity 4 is recorded and narrated be ［ 11 ］ etc.
Therefore, can use it, for example take following description method.An end begins in order to record and narrate (a) and whether to carry out revisal (no information is wanted in revisal), (b) dark uneven revisal or the revisal of bright inequality (revisal half-tone information) and (c) which revisal intensity grouping according to the location of pixels on the panel from the panel.Only carrying out in the situation of one of the revisal of dark inequality or revisal of bright inequality, also can omit the information that relates to (b).
For example, with regard to whether (a) carries out revisal, be defined as ' not carrying out revisal '=［ 0 ］, ' carrying out revisal '=［ 1 ］.In the situation that this position is ［ 0 ］, next bit is considered as the information bit of whether next line pixel group being carried out (a) revisal.In addition, in the situation that ［ 1 ］ specifies (b) dark uneven revisal or the revisal of bright inequality by next bit.Here, be defined as ' dark uneven revisal '=［ 0 ］, the revisal of bright inequality=［ 1 ］.In addition, then specify (c) which revisal intensity grouping by 2 again, next bit again is considered as whether carrying out the information bit of (a) revisal of next line pixel group.Above revisal data are recorded and narrated flow process as shown in figure 10.
Below, according to this data description method, consider uneven situation about distributing shown in Figure 9.Fig. 9 is the key diagram for the generation method of explanation revisal information.
At first, because initial not revisal of cl, be ［ 0 ］ so establish the initial position of revisal data.Next bit is the information that has or not revisal of c2, and the 3rd also is made as ［ 0 ］.And, because also not revisal of c3, thus the 3rd also be made as ［ 0 ］.Then c4 carries out the revisal of bright inequality, and owing to being revisal intensity 1, institute thinks ［ 1 ］ (revisal is arranged), ［ 1 ］ (revisal of bright inequality), ［ 00 ］ (revisal intensity 1), the result, and 4 bit tables such with ［ 1100 ］ show.Then line pixel group c5 is revisal intensity 2 owing to being the revisal of bright inequality, so with above-mentioned the same, existing with 4 bit tables that ［ 1101 ］ are such.Then, c6, c7 are the revisals of bright inequality, are respectively revisal intensity 4, revisal intensity 3, so, show with such 4 in ［ 1111 ］ ［ 1110 ］.C8 is because not revisal, so only show with ［ 0 ］ such 1.Then, c9, c10, c11 are dark uneven revisals, are respectively revisal intensity 2, revisal intensity 2, revisal intensity 1, are ［ 1001 ］ ［ 1001 ］ ［ 1000 ］ so record and narrate.As a result, from the correction method of c1 to c11 take 32 records as ［ 00011001101111111100100110011000 ］.
In the said method, because can be with the existing line pixel group of revisal not of 1 bit table, with the line pixel group of the existing revisal of 4 bit tables, so for example the quantity of online pixel group is 360, half 180 line pixel groups are wherein provided in the situation of revisal, can record and narrate with 900 so few data volumes.These revisal data are stored in the revisal data store 31 of display device 20 described later.
In addition, in this example, revisal intensity 1,2,3,4 is equivalent to carry out revisal with the ratio of 1 pixel in 1 pixel, 2 pixels in 1 pixel, 3 pixels in 1 pixel, 4 pixels in 7 pixels respectively.The form that the corresponding relation of expression this revisal intensity and ratio must will be arranged, but this form also can be stored in other zone of revisal data store 31, also can ROM be set in addition in the driving circuit of display device 20, and information is stored in here.Particularly as shown in this example, establish the differentiation in revisal stage with bright inequality and dark inequality identical, if provide identical representative rate value (for example bright inequality, dark inequality are all carried out revisal with revisal intensity 2 in the ratio of 1 pixel in 4 pixels) to identical revisal intensity, then can cut down the quantity of information that relates to the revisal ratio.
In addition, the description method as to the revisal data of each line pixel group also can adopt following method, can further cut down data volume.
Namely, in the example of Fig. 9, in the continuous situation of bright inequality such from c4 to c7 or from c9 to c11 in the continuous situation of such dark inequality, only specify (b) dark uneven revisal or the appointment of the revisal of bright inequality at initial line pixel group (c4 or c9), next line pixel group is specified with reference to this.If record and narrate the correction method of Fig. 9 with the method, then the same with above-mentioned example from c1 to c3, be ［ 0 ］ ［ 0 ］ ［ 0 ］, c4 is also the same with above-mentioned example, be ［ 1100 ］, but c5, c6, c7 is by the 2nd ［ 1 ］ with reference to c4, as long as record and narrate (a) and (c) information, that is, record and narrate and be ［ 101 ］ ［ 111 ］ ［ 110 ］.Before appearance (a) is the line pixel group of ［ 0 ］ (without revisal), preserve the 2nd the information of c4, be applicable to next line pixel group.Simultaneously, (a) subsequently 2 of information become (c) information (omitting the record of (b) information).Then, because c8 is without revisal ［ 0 ］, so the 2nd information ［ 1 ］ of the c4 that resets here.Next bit is regarded the information of whether execution (a) revisal of c9 as, and the situation of Fig. 9 example is ［ 1 ］ for revisal is arranged.Following 1 is (b) dark uneven revisal or the revisal of bright inequality, owing to be dark inequality, so become ［ 0 ］, in 2 again, revisal intensity (c) is become record (owing to being revisal intensity 2, institute thinks ［ 01 ］), and the revisal information of c9 is recorded and narrated and is ［ 1001 ］.Then, c10, c11 are also owing to continuing dark uneven revisal, so distribute (b) information of c9 to it, only record and narrate (a) and get final product with (c) information, be ［ 101 ］ (revisal intensity 2), ［ 100 ］ (revisal intensity 1) so record and narrate respectively.(a) information to occur be ［ 0 ］, namely before the line pixel group without revisal, record and narrate the correction method of each line pixel group with 3 units.
The flow process that above data are recorded and narrated as shown in figure 11.Figure 11 is the process flow diagram of recording and narrating the method that is the revisal data for explanation.
According to the method, the revisal data from c1 to c11 of Fig. 9 can be ［ 000110010111111001001101100 ］ by 27 records, compare with illustrating to record and narrate as the method for Figure 10 of the process flow diagram of the method for revisal data for explanation, can cut down data volume.In the method, in the continuous situation of the line pixel group that revisal is arranged, only its initial line pixel group is recorded and narrated (b) information (dark uneven revisal or the revisal of bright inequality), to applicable identical (b) information of remaining line pixel group, omit thus the record of (b) information, carry out the reduction of data volume.Therefore, as long as there is the line pixel group of revisal continuous, then owing to becoming identical (b) information, so in the line pixel group of the revisal of the carrying out dark inequality situation adjacent with the line pixel group of the revisal of carrying out bright inequality, can not record and narrate the revisal data.Therefore, in the situation that bright inequality and dark inequality approach, must insert line pixel group without revisal in its boundary portion, as long as reset (b) information here.
In the example of Fig. 9 and since between bright uneven c4-c7 and the dark uneven c9-c11 existence without the c8 of revisal, so may be suitable for the data description method of Figure 11.But, carry out the result that uneven intensity is resolved, be contained between the 0.10-0.20 at c8/B, be categorized as in the situation of revisal intensity 1, the revisal meeting adjacency of the revisal of bright inequality and dark inequality among the c8-c9, the method for Figure 11 can not be carried out the data record.In this case, relatively c8 and c9 need only the side that uneven intensity is low and change to without revisal.In fact uneven easily by visual recognition mainly near the peak (c6 or c10 among Fig. 9) of brightness disproportionation, even if carry out above-mentioned change in the boundary portion of brightness light and shade, do not think that the effect to uneven revisal exerts an influence yet.Therefore, also can adopt in this case the method for Figure 11.
Also can adopt following method as the data description method.
The method is in the situation that (a) be ［ 1 ］ (revisal is arranged), method according to Figure 10 or Figure 11 is recorded and narrated, in the situation that (a) be ［ 0 ］ (without revisal), use the numerical digit of back, record and narrate (d) without the line pixel group continuation several (without the revisal information) of revisal.For example, as being used for explanation record Figure 12 for the process flow diagram of the method for revisal data, to the applicable said method of Figure 11, show (d) information (value that the example here explains to deduct after 1 with scale-of-two, maximum performance is to 16) with 4 from the consecutive numbers of of no help main track pixel group.
In the situation of the revisal of recording and narrating Fig. 9 according to said method, the information of c1-c3 uses the number without revisal to represent without revisal ［ 0 ］ afterwards, in this example, because 3 of no help main track pixel groups are continuous, thus show as ［ 0010 ］, therefore the result becomes ［ 00010 ］.In addition, c8 is because of no help main track pixel group is discontinuous, so become ［ 0 ］ ［ 0000 ］.As a result, become in the method with Figure 11 in the situation of this method, the record of c1-c11 becomes ［ 000101100101111110000001001101100 ］, is 33.
The method of this Figure 12 especially in the continuously many situation without the line pixel group of revisal, becomes very effective data-reduction method in display frame.For example, consider situation of carrying out based on the grouping of revisal intensity as described below.
The example (2) of grouping
Revisal intensity 1 ci/B or di/A are more than or equal to 1.0 σ, less than 1.4 σ
Revisal intensity 2 ci/B or di/A are more than or equal to 1.4 σ, less than 1.8 σ
Revisal intensity 3 ci/B or di/A are more than or equal to 1.8 σ, less than 2.2 σ
Revisal intensity 4 ci/B or di/A are more than or equal to 2.2 σ.
Above-mentioned grouping is compared with the example (1) of grouping, sets the stage of grouping with high value, ci/B or di/A less than the inequality of 1.0 σ all as not carrying out revisal without revisal.Therefore, the example (2) of grouping is compared with the example (1) of grouping, and corresponding to setting stage by stage with high value, the number of the line pixel group that comprises the revisal intensity from 1 to 4 reduces, counting of line pixel group without revisal increases, so the tendency that exists the capacity of revisal data to diminish.
But particularly in the situation that will be set as stage by stage high value as the example (2) of this grouping, the continuous frequency of of no help main track pixel group uprises, and is remarkable based on the effect of the data-reduction of Figure 12 method.In fact, for 4 of the liquid crystal panels of holding 360 source electrode lines (panel 1～panel 4), the below illustrates this source electrode line is considered as the line pixel group, carries out uneven parsing and the example of uneven revisal data creating.
The situation of panel 1 is without the line of revisal=267, the line of revisal=93
The method of revisal data volume Figure 10=639, the method for Figure 11=575, the method for Figure 12=488
The situation of panel 2 is without the line of revisal=311, the line of revisal=49
The method of revisal data volume Figure 10=507, the method for Figure 11=483, the method for Figure 12=347
The situation of panel 3 is without the line of revisal=299, the line of revisal=61
The method of revisal data volume Figure 10=543, the method for Figure 11=510, the method for Figure 12=401
The situation of panel 4 is without the line of revisal=322, the line of revisal=38
The method of revisal data volume Figure 10=474, the method for Figure 11=451, the method for Figure 12=269
As mentioned above, in the method for Figure 12, all can carry out data with interior such low capacity with 500 and record and narrate.
Like this, record and narrate correction method by utilizing few data capacity, can be with the dummy section of the existing storer that is equipped with in the display device as revisal data store 31.
Figure 13 is the formation block diagram of the drive control part 22 of outfit in the expression display device 20.As shown in the drawing, drive control part 22 possesses revisal data store 31, lsb decoder 32, spatial dispersion handling part 33, time dispersion treatment section 34, addition process section 35, the 1st latchs section 36, the 2nd and latchs section 37 and D/A transformation component 38.By spatial dispersion handling part 33, time dispersion treatment section 34 and addition process section 35 form the view data correcting section.
Revisal data store 31 is nonvolatile memories of storing when checking display device 20 from the revisal data of revisal data creating device 10 inputs.In the present embodiment, the revisal data that storage is recorded and narrated by revisal data creating device 10 in revisal data store 31.
When lsb decoder 32 will be shown in the display panel 21 in display device 20 corresponding to the image of display image data, read the revisal data of storage in the revisal data store 31, decode after these revisal data, be made as tone correcting information, output to spatial dispersion handling part 33.
Spatial dispersion handling part 33 is according to the tone correcting information from lsb decoder 32 inputs, set corresponding to adjusting the position of revisal pixel in each source electrode line in brightness disproportionation zone, and the tone correcting information output that will represent this setting result is to time dispersion treatment section 34.Particularly, determine will be from the source electrode line end the pixel of which pixel be made as adjust revisal pixel (off-set value) in, be set as adjustment revisal pixel with this pixel with apart from the pixel of the every predetermined distance of this pixel.
In a plurality of source electrode lines of adjacency, produce in the situation of brightness disproportionation, also can set the position of respectively adjusting the revisal pixel, so that adjust the position different and dispersion between the source electrode line of adjacency on the revisal pixel source electrode line bearing of trend each other in these each source electrode lines.Figure 14 is the key diagram of position one example of expression adjustment revisal pixel at this moment.
Time, dispersion treatment section 34 was according to the revisal information from 33 inputs of spatial dispersion handling part, with the position of adjustment revisal pixel in each source electrode line of change ground setting per specified time limit (for example per 1 frame), and will represent that this setting result's revisal information output arrives addition process section 35.Fig. 1 is that expression is by the key diagram of position one example of the adjustment revisal pixel of time dispersion treatment section 34 settings.In the example shown in this figure, time, dispersion treatment section 34 was so that adjust the constant mode of ratio (adjusting revisal pixel spacing each other) maintenance of revisal pixel, the position (off-set value) of adjusting the revisal pixel is changed along the source electrode line bearing of trend by per 1 frame.
In addition, spatial dispersion handling part 33 also can be opposite with time dispersion treatment section 34 order.That is, also can constitute from lsb decoder 32 to time dispersion treatment section 34 input gray level revisal information, from the time dispersion treatment section 34 to spatial dispersion handling part 33 input gray level revisal information.
Addition process section 35 is by adding in the display image data that is input to display device 20 based on the compensating value from the tone correcting information of time dispersion treatment section 34 input, the revisal display image data, and the display image data after the revisal is outputed to the 1st latch section 36.In a word, adjustment revisal pixel to being represented by tone correcting information among each pixel in the display image data is carried out the revisal of gray-value variation 1 gray scale (improving at least or reduce by 1 gray scale corresponding to tone correcting information) that makes at least display image data and is processed.
Particularly, be regional less than or equal to 1 brightness disproportionation to above-mentioned ratio, make gray-value variation 1 gray scale of adjusting the revisal pixel, but to other not revisals of pixel.In addition, above-mentioned ratio surpassed 1 brightness disproportionation zone, when the gray-scale value that makes this each pixel only changes gray-scale value corresponding to the integral part of above-mentioned ratio, make again gray-value variation 1 gray scale of adjusting the revisal pixel.Perhaps, surpass 1 brightness disproportionation zone for above-mentioned ratio, also can make the gray-scale value of adjusting the revisal pixel only change gray-scale value corresponding to the said n value, simultaneously to other not revisals of pixel.
The 1st to latch section 36 synchronous with the sampling pulse that generates according to clock signal, and the display image data after the revisal of addition process section 35 outputs of sampling successively latchs the view data corresponding to 1 line (1 gate line) amount.The 2nd latchs section 37 latchs by the 1st view data that latchs the 1 line amount that section 36 latchs again.
D/A transformation component (digital-to-analog transformation component) 38 will be transformed to simulating signal by the 2nd view data that latchs the 1 line amount that section 37 latchs, with the timing output of regulation each source electrode line to display panel 21.
Display panel 21 possesses a plurality of gate lines (scan signal line) and a plurality of source electrode lines (data signal line), in each the rectangular zone that is made of these gate lines and source electrode line differentiation pixel (all not shown) is set respectively.
Each pixel is made of with the transistor AND gate pixel capacitance switch, and pixel capacitance consists of (all not shown) by liquid crystal capacitance and the auxiliary capacitor that adds in case of necessity.Switch is connected on the gate line with transistorized grid.Source electrode is connected on the source electrode line, and drain electrode is connected on the electrode of pixel capacitance.Another electrode of pixel capacitance is connected on the common common electrode lines of whole pixels.
Thus, if select gate line by gate drivers (not shown), then be connected in the switch transistor turns of each pixel on the selecteed gate line, synchronous with it, the voltage that will put on from the D/A transformation component 38 of drive control part 22 on each source electrode line puts on the corresponding pixel capacitance.
Between the selecting period of gate line, stop, switch with transistor be truncated during, the voltage when pixel capacitance continue to keep this to block.The transmitance of liquid crystal or reflectivity change along with putting on the voltage on the liquid crystal capacitance, so by selecting gate line, apply voltage corresponding to view data to source electrode line, can make the show state of pixel be matched with view data and change.
As mentioned above, revisal data creating device 10 according to present embodiment makes the whole pixels that are shown in display panel 21 corresponding to the inspection of same grayscale with the image of view data, and this display frame of making a video recording, from camera data, extract brightness data, and from the brightness data that extracts, extract the brightness disproportionation of strip.Afterwards, generation comprise each brightness disproportionation zone positional information, with the revisal data of the grouping information in these each brightness disproportionation zones of dividing into groups according to the deviate of the brightness disproportionation amount in each brightness disproportionation zone, and be stored in the revisal data store 31 that display device 20 is equipped with.
Afterwards, display device 20 according to positional information and the grouping information in each brightness disproportionation zone in the revisal data of storage in the revisal data store 31, is carried out the revisal of brightness disproportionation when making image corresponding to display image data be shown on the display panel 21.
Like this, by each brightness disproportionation zone of dividing into groups, can reduce the capacity of revisal data, so even if in the little situation of the capacity of revisal data store 31, also can suitably store the revisal data.
Figure 15 be expression from shooting make corresponding to the resulting brightness data of camera data behind the display panel 21 that does not carry out the state that inspection that revisal the processes image with view data shows, with from make the curve corresponding to the brightness data of implementing inspection that revisal the processes resulting brightness data of camera data after with the display panel 21 of the image demonstration of view data according to shooting.Transverse axis represents the position of each line pixel group, and the longitudinal axis represents the brightness value (mean value of brightness value that belongs to the pixel of above-mentioned each line pixel group) of each line pixel group.From these curves as can be known, by the correction method according to present embodiment, can so that the brightness disproportionation of strip not by the mode revisal view data of visual recognition.
In addition, in the present embodiment, the position of adjusting the revisal pixel is changed by per 1 frame.That is, make position space and the temporally dispersion in the brightness disproportionation zone of adjusting the revisal pixel.
Thus, can prevent more reasonably that brightness disproportionation is by visual recognition.
In the present embodiment, in the revisal data store 31 that display device 20 is equipped with, store in advance information and the grouping information of the position in expression brightness disproportionation zone, the spatial dispersion handling part 33 that display device 20 is equipped with and the time dispersion treatment section 34 determine when the image that shows corresponding to display image data, make the locational space of the adjustment revisal pixel in the brightness disproportionation zone and disperse temporally.Especially by using the revisal data description method of above-mentioned explanation, can reduce the data size of revisal data, reduce the memory capacity that revisal data store 31 requires.
In the present embodiment, the situation of the strip brightness disproportionation that revisal is parallel with the source electrode line bearing of trend has been described, but has been not limited to this, but the also revisal strip brightness disproportionation parallel with the gate line bearing of trend.At this moment, for example as long as according to the brightness data that extracts from camera data, detect the mean value corresponding to the brightness value of the line pixel group of each gate line bearing of trend, this testing result is carried out the mobile horizontal homogenizing in the direction vertical with the line pixel group to be processed, according to these results, the detection of carrying out brightness disproportionation gets final product.In addition, as long as the testing result revisal view data according to brightness disproportionation, so that select pixel corresponding to every predetermined distance in the gate line in brightness disproportionation zone as adjusting the revisal pixel, make the gray-scale value of the adjustment revisal pixel of selecting change at least 1 gray scale and get final product.
In addition, in the present embodiment, when calculating in each brightness disproportionation zone rationally during the deviation of luminance values of brightness value, the moving average of the brightness value of line pixel group is considered as reasonable brightness value, calculates the deviation of above-mentioned brightness value.Thus, for example, even if by from the Luminance Distribution of the irradiation light of backlight etc., make corresponding in the different situation of the reasonable brightness value in the position in the display frame, also can be easily and reasonably calculate in each brightness disproportionation zone degree to the deviation of the brightness value of reasonable brightness value.For example in situation about knowing in advance corresponding to the reasonable brightness value of the position in the display frame, also can calculate according to this reasonable brightness value the deviation of brightness value in each brightness disproportionation zone.
［ embodiment 2 ］
Other embodiments of the present invention are described.For convenience of explanation, to embodiment 1 in the parts of explanation have the identical symbol of the additional and embodiment of the parts of the same function 1, and the description thereof will be omitted.
The formation of revisal strip inequality has been described, the configuration example when the local mottled inequality of revisal (mottled inequality) is described in the present embodiment in the embodiment 1.
Figure 16 is that expression is according to the revisal data creating device 10b of present embodiment and the formation block diagram of display device 20b.As shown in the drawing, revisal data creating device 10b possesses mobile horizontal homogenizing handling part 14, brightness disproportionation test section 15 and the revisal data generating unit 16 that mobile horizontal homogenizing handling part 14b, brightness disproportionation test section 15b and revisal data generating unit 16b replace the revisal data creating device in the embodiment 1.In addition, display device 20b possesses display panel 21 and drive control part 22b.The function and the embodiment 1 that show data generating unit 11, image pickup part 12 and brightness data extracting part 13 are much the same.
Show that data generating unit 11 makes corresponding to same gray scale (benchmark gray-scale value.For example gray-scale value 10) the image of view data be shown in the Zone Full of display panel 21, mobile horizontal homogenizing handling part 14b carries out the mobile horizontal homogenizing processing that the brightness value of each pixel is replaced into the brightness value mean value of each pixel that comprises in the piece of the given size centered by this each pixel to the brightness data that brightness data extracting part 13 is drawn into from the camera data of image pickup part 12 these images of shooting.Below, the brightness value of each pixel after the mobile horizontal homogenizing processed is called moving average.
In addition, the afore mentioned rules size is much wider than the width in mottled brightness disproportionation zone, preferably is set as in this given size everybody and is set up from brightness value in the uneven zone of difference relative brightness of the brightness value of the irradiation light of backlight apart from the reasonable much smaller scope of deviation of brightness value.Particularly, in the situation of the display panel of the hundreds of pixels that in the mobile devices such as portable phone, are equipped with * hundreds of pixel degree, preferably be set as the scope of 2mm * 2mm～10mm * 10mm.In the present embodiment, use the display panel 21 of 360 pixels * 480 pixels, establishing above-mentioned scope is 5mm * 5mm.Longitudinal length in the afore mentioned rules size may not be identical with lateral length.
Poor (the brightness disproportionation amount) of the brightness value of each pixel that the brightness data extracting part 13 of calculating brightness disproportionation test section 15b extracts and the moving average of this each pixel, and the absolute value that detects this difference is more than or equal to the zone more than the continuous pixels specified quantity of defined threshold, as mottled brightness disproportionation.
In addition, afore mentioned rules quantity is as long as rationally set to prevent the visual recognition brightness disproportionation corresponding to the size of display device or purposes etc.
Revisal data generating unit 16b is according to the testing result of brightness disproportionation test section 15b, generate the revisal information that is used for being difficult to the mottled brightness disproportionation of visual recognition, data are are according to the rules recorded and narrated method, and it is made as the revisal data, output to the drive control part 22b that display device 20b is equipped with.
The correction method of mottled inequality in the present embodiment is described here.The mottled inequality of supposing in the present embodiment be when in display panel, showing even image than around seem bright bright mottled inequality with than around seem dark dark mottled inequality.
The concept map of the correction method of the mottled inequality shown in Figure 17 in the present embodiment.
In the present embodiment, as the correction method of mottled inequality, adopt following method, namely as shown in figure 17, to bright mottled inequality and the dark mottled 4 kinds of revisal patterns that only do not use respectively, be applicable to occur the part of mottled inequality, make thus mottled inequality unobvious.The revisal pattern that uses in the revisal of mottled inequality in the situation that present embodiment be not made as respectively 4 kinds to light and shade is mottled, but be not limited to this.The kind of revisal pattern is more, then can carry out better uneven revisal, but the memory capacity of storage increases in the revisal pattern storage part 39 that display device 20b is equipped with (with reference to Figure 18 described later).Therefore, the kind of revisal pattern is as long as rationally adjust corresponding to the capacity of revisal pattern storage part 39.
If then be generally less than or equal to 1 gray scale because the brightness disproportionation amount of mottled inequality is scaled gray-scale value, so must spatially selecting configuration, the revisal pattern carries out the pixel of positive 1 gray scale or negative 1 tone correcting (adjusting the revisal pixel).Here, so-called brightness disproportionation amount is moving average poor of the brightness value of each pixel of extracting of brightness data extracting part 13 and this each pixel.
Use so-called dithering less than or equal to the revisal of 1 gray scale.So-called dithering is for the image processing method with few more gray scales of gray scale simulation ground performance.In the correction method of the mottled inequality in the present embodiment, because revisal is less than or equal to the inequality of 1 gray scale, so 1 gray scale was divided into for 16 stages, carry out revisal less than or equal to 1 gray scale with 1/16 gray scale unit.Particularly, as dither matrix, use the matrix that distributes 1～16 value to each piece (mass) of shown in Figure 19 4 * 4.For example, wanting to reduce in the situation of 5/16 grey gray scale of measuring, needing only the revisal of from 1 to 5 corresponding pixel of dither matrix shown in Figure 19 being carried out negative 1 gray scale.
The pixel of color display panel has R (red), G (green), B (indigo plant), but in the present embodiment, as shown in figure 19, to R, G, the B dither matrix difference that makes respectively of all kinds.Thus, sparse configuration revisal pixel is carried out uneven revisal better spatially.
Like this, in the present embodiment, use 4 * 4 dither matrixs, carry out revisal less than or equal to 1 gray scale with 1/16 gray scale unit.Therefore, the base unit of revisal is the zone of 4 pixels * 4 pixels.
In the present embodiment, use above-mentioned 4 * 4 dither matrixs, generate to be used for the basic revisal pattern of 4 pixels of the mottled inequality of revisal * 4 pixels.Figure 20 represents to use the basic revisal pattern of 4 pixels that above-mentioned dither matrix makes * 4 pixels.Among Figure 20, the pixel beyond white (pixel that represents with oblique line etc.) is the adjustment revisal pixel that improves 1 gray scale or reduce by 1 gray scale.In addition, dither matrix is stored among the drive control part 22b of display device 20, drive control part 22b calculates basic revisal pattern according to dither matrix, and the basic pattern that perhaps will use dither matrix to calculate in advance is stored in the revisal pattern storage part 39 of drive control part 22b outfit.
In the present embodiment, for each of bright mottled inequality and dark mottled inequality, 4 basic revisal patterns are stored in the revisal pattern storage part (basic revisal pattern storage part) 39, spatial dispersion handling part 33 is selected the basic revisal pattern corresponding to the deviate (standard deviation of brightness disproportionation amount) of the brightness disproportionation amount in each brightness disproportionation zone, determines to adjust the revisal pixel.
For example, if the moving average (reasonable brightness value) of the brightness value of establishing each pixel that the brightness data extracting part 13 of certain display panel extracts and this each pixel poor, be that the deviate (standard deviation of brightness disproportionation amount) of brightness disproportionation amount is 3, be 10 to the reasonable brightness value of the view data of benchmark gray-scale value with difference A to the reasonable brightness value of the view data that is higher than benchmark gray-scale value 1 gray scale, the deviate σ of the brightness disproportionation amount after then gray scale converts is 0.3.
Use this value, to dark mottled inequality, begin to select in order the basic revisal pattern of 4 pixels * 4 pixels corresponding to 0.5 σ, 1.0 σ, 1.5 σ, 2.0 σ from weak revisal.Namely, in the situation that Figure 20, as the basic revisal pattern of above-mentioned 44 pixels * 4 pixels, select near gray scale 0.15 (0.5 * 0.3) basic 02, near gray scale 0.30 (1.0 * 0.3) basic 05, near gray scale 0.45 (1.5 * 0.3) basic 07, near basic 10 of gray scale 0.60 (2.0 * 0.3).Afterwards, in the zone of the applicable basic revisal pattern of selecting, carry out revisal, improving 1 gray scale corresponding to the gray-scale value of the pixel of white pixel in addition in the basic revisal pattern.
In the explanation afterwards, if the basic revisal pattern corresponding to 4 pixels of 0.5 σ * 4 pixels is the A1 pattern, basic revisal pattern corresponding to 4 pixels of 1.0 σ * 4 pixels is the B1 pattern, basic revisal pattern corresponding to 4 pixels of 1.5 σ * 4 pixels is the C1 pattern, is the D1 pattern corresponding to the basic revisal pattern of 4 pixels of 2.0 σ * 4 pixels.Here, illustrate that mainly above-mentioned A1 pattern, B1 pattern, C1 pattern and D1 pattern correspond respectively to the situation of 0.5 σ, 1.0 σ, 1.5 σ and 2.0 σ, but be not limited to this, basic revisal pattern can rationally be adjusted corresponding to the degree of brightness disproportionation.For example, also can use pattern corresponding to 1.2 σ, 1.6 σ, 2.0 σ and 2.4 σ as A1 pattern, B1 pattern, C1 pattern and D1 pattern.
To the basic revisal pattern of 44 pixels of bright mottled inequality * 4 pixels can by with obtain corresponding to the same method of 3 basic revisal method of pattern selections of dark mottled inequality.Therefore, from 16 basic revisal patterns shown in Figure 20, select 4 basic revisal patterns corresponding to the brightness disproportionation amount deviate of bright mottled inequality, in the zone of the applicable basic revisal pattern of selecting, carry out revisal, reducing by 1 gray scale corresponding to the gray-scale value of the pixel of white pixel in addition in the basic revisal pattern.In the explanation of back, 4 basic revisal patterns establishing corresponding to bright mottled inequality are respectively A2 pattern, B2 pattern, C2 pattern and D2 pattern.
In the present embodiment, for the revisal zone corresponding to dark mottled inequality, carry out revisal with the pattern after 4 basic revisal combinations of patterns that make above-mentioned A1 pattern～D1 pattern, for the revisal zone corresponding to bright mottled inequality, usefulness makes the pattern after above-mentioned A2 pattern～D2 combinations of patterns carry out revisal.
Particularly, mottled inequality is the brightness disproportionation amount maximum of its central part usually, and far away apart from the center, then the brightness disproportionation amount is less.Therefore, in the present embodiment, make 4 basic revisal combinations of patterns, so that more near the central part in revisal zone, revisal intensity is stronger.Figure 21 illustrates the example of the revisal pattern that 4 basic revisal patterns of combination obtain.Here, the A among Figure 21 is corresponding to A1 pattern and A2 pattern, and B is corresponding to B1 pattern and B2 pattern, and C is corresponding to C1 pattern and C2 pattern, and D is corresponding to D1 pattern and D2 pattern.That is, the A among Figure 21, B, C, D hold respectively the size of 4 pixels * 4 pixels.In addition, make O among Figure 21 all the time corresponding to the basic oo among Figure 20.That is, the partial pixel corresponding to O among Figure 21 is not carried out revisal.For example, as long as corresponding to the size in the revisal zone corresponding with mottled inequality, any that select pattern 1～pattern 4 shown in Figure 21 gets final product.Example shown in Figure 21 is an example of revisal pattern, and the combined method of basic revisal pattern is not limited to this, can rationally adjust corresponding to the size of mottled inequality or shape etc.
Like this, will be for the revisal pattern magnitude (or size and shape) of the mottled inequality of the revisal form corresponding with the collocation method of 4 basic revisal patterns by preparation, degree (deviate of brightness disproportionation amount in the mottled inequality) corresponding to the brightness disproportionation of display panel is come 4 basic revisal patterns of choose reasonable, selection is corresponding to the revisal pattern of the size (or size and shape) in the revisal zone corresponding with mottled inequality, the reasonably mottled inequality of revisal.
In addition, according to said method, owing to can carry out the revisal of mottled inequality by few revisal pattern and the basic revisal pattern of usage quantity, so can make the memory capacity of revisal data store 31b and revisal pattern storage part 39 considerably less.
In the present embodiment, brightness disproportionation test section 15b selects the revisal pattern of the size of the revisal area size with the most approaching brightness disproportionation zone corresponding to actual display panel from revisal pattern shown in Figure 21, and will be suitable for the revisal pattern position (or the position in revisal zone), revisal pattern the pattern sequence number and represent dark mottled inequality or the information of bright mottled inequality is delivered to revisal data generating unit 16b.
Revisal data generating unit 16b is to bright mottled inequality and the dark mottled basic revisal pattern of not selecting respectively corresponding to A, B, C, D in the revisal pattern.
Like this, revisal data generating unit 16b except the pattern sequence number of the position (or the position in each revisal zone) of the applicable revisal pattern that sends from brightness disproportionation test section 15b, revisal pattern and represent dark mottled inequality or the information of bright mottled inequality, also generate bright mottled inequality and the dark mottled revisal data that do not illustrate respectively corresponding to the basic revisal pattern of A, B, C, D in the revisal pattern.
Particularly, in the situation of the display device of 360 pixels * 480 pixels, the natural number less than or equal to 360 can be by 9 records, and the natural number less than or equal to 480 also can be by 9 records, so (a) positional information can by amounting to 18 records, can be come assigned address with the precision of pixel unit.With regard to which kind of revisal is provided to this position, at first, can also provide with 1 revisal of recording and narrating (b) and providing bright inequality the revisal (in the situation of only carrying out one of bright uneven revisal or dark uneven revisal, can omit this position) of dark inequality.And, because as long as specify (c) from 4 basic revisal patterns, which to be selected, so can record and narrate by 2.As a result, by specifying the configuration of 1 basic revisal pattern, can amount to 21 and record and narrate.If the basic pattern of spot inequality is configured in 100 positions in the display frame, then can 2100 record and narrate.
Perhaps, also can come the uneven revisal of represent light and dark uneven revisal by its number, at this moment, above-mentioned (b) provides the position of the revisal that the revisal of bright inequality also provides dark inequality to omit.
For example, the revisal of considering bright inequality exists the revisal of 70 positions, dark inequality to have the situation at 30 positions.The number of this revisal is owing to showing (with regard to showing at what position number with, as long as each type of display device is rationally determined) with 7 respectively, so can record and narrate by 14 altogether.In addition, because (a) which positional information (c) selects record and narrate by 2 from 4 basic revisal patterns by 18 records, so 1 position of configuration of basic revisal pattern can be with 20, according to pixels unit specifies.Therefore, because there are 70 positions in the revisal of bright inequality, so record and narrate by amounting to 20 * 70=1400 position.In addition, the 1401st later revisal data as dark inequality, there are 30 positions in the revisal of dark inequality, so recorded and narrated by 20 * 30=600 position.As a result, can record and narrate the revisal data with the 1400+600+7+7=2014 position by the method.
And, also can adopt and consider on picture, rationally to cut apart each the Region specification revisal pattern arrangement number after cutting apart by this and the method for coordinate.
That is, in the situation of the display device of 360 pixels * 480 pixels, as long as consider display frame is divided into 48 in the zone of 60 pixels * 60 pixels, get final product by the applicable above-mentioned data description method in each zone respectively.
For example, establish the revisal of 8 dark inequalities of per 1 regional maximum configured and the revisal of bright inequality (this higher limit is as long as rationally determine each type of display device).At this moment, bright inequality, dark not respectively can with each 3, amount to 6 and record and narrate number.Therefore, for example by the revisal data initial 6 record and narrate in 60 pixels that should be configured in the display frame upper right side * 60 pixel regions, the number (for example 1) of the revisal pattern of the number (for example 5) of the revisal pattern of bright inequality and dark inequality.At this moment, owing to can show by 6 less than or equal to 60 natural number, so (a) positional information can be recorded and narrated by 12.In addition, (c) which from 4 basic revisal patterns, selects can be by 2 records.Therefore, 1 uneven revisal pattern of configuration can be recorded and narrated by 14.The revisal pattern that can be by the revisal pattern of bright inequality then 70 at 5 positions, dark inequality be 1 position then 14 amount to the 6+70+14=90 position, record and narrate the uneven revisal pattern arrangement method to initial 60 pixels * 60 pixel regions.
That is, by 3 initial quantity of specifying the bright uneven revisal pattern that comprises in 60 initial pixels * 60 pixel regions, by 3 following quantity of specifying the dark uneven revisal pattern that comprises in 60 initial pixels * 60 pixel regions.Afterwards, if bright uneven revisal pattern is appointed as n, dark uneven revisal pattern is appointed as m, (14 * n) allocation position and kinds (one of 4 revisal patterns) of recording and narrating bright uneven revisal pattern, more following (14 * m) allocation position and kinds of recording and narrating dark uneven revisal pattern below then distinguishing.After the position after these, namely the (3+3+14 * n+14 * m+1) is the record of the correction method of next 60 pixel * 60 pixel regions after the position.In the method, make bright uneven revisal, dark uneven revisal that the situation at 100 positions be arranged together if consider, then display frame is divided into 48 zones, to the numbers of each zone by 6 appointment revisal patterns, in addition, per 1 position is by 14 positional information and kinds of specifying the revisal pattern, so can record and narrate correction method by 6 * 48+14 * 100=1688 position.
In addition, in the said method, when not comprising the revisal pattern in certain 60 pixel * 60 pixel regions, these regional revisal data are recorded and narrated and are ［ 000000 ］.In the regional continuous situation without revisal, can be by should it being recorded and narrated ［ 000000 ］ continuous quantity ground arrangement.This is to be similar to the method for recording and narrating the method for of no help main track pixel group among Figure 15 with ［ 0 ］.Here, the also method of applicable Figure 17.That is, also can adopt use ［ 000000 ］ numerical digit afterwards to specify continuously several method of of no help positive region.Brightness disproportionation concentrate on display frame privileged site, exist in the display frame type of the many tendencies of the continuous change of of no help positive region, also can further cut down data volume by adopting the method.
Basic revisal pattern is held width in the scope that is positioned in the display frame, so-called configuration positional information at that time be central coordinate or sit up straight mark wait, by the reference coordinate of the rule decision of reasonable setting.Therefore, so-called above-mentioned of no help positive region means and does not comprise the said reference coordinate in this zone, may not mean not comprise fully in this zone and adjust the revisal pixel.Under the different situations, the basic revisal pattern that configures in the neighboring region extends to of no help positive region, sometimes also comprises in the of no help positive region to adjust the revisal pixel.
Like this, revisal information becomes revisal data by 0/1 binary signal that consists of by revisal data generating unit 16b, outputs to the drive control part 22b of display device 20b.
Figure 18 is the formation block diagram of the drive control part 22b that is equipped with among the expression display device 20b.As shown in the drawing, drive control part 22b possesses revisal data store 31b, lsb decoder 32b, spatial dispersion handling part 33b, the time 34b of dispersion treatment section, addition process section 35, the 1st latchs section 36, the 2nd and latchs section 37, D/A transformation component 38 and revisal pattern storage part 39.Form the view data correcting section by spatial dispersion handling part 33b, the time 34b of dispersion treatment section and addition process section 35.The basic revisal pattern that in advance storage of revisal pattern storage part 39 is shown in Figure 20 and revisal pattern shown in Figure 21.
Revisal data store 31b is storage nonvolatile memory from the revisal data of revisal data creating device 10b input when checking display device 20b.To be stored in wherein according to the revisal data that said method is recorded and narrated as binary signal.
When lsb decoder 32b will be shown in the display panel 21 in display device 20b corresponding to the image of view data, read the revisal data of storing among the revisal data store 31b, decode after these revisal data, be made as tone correcting information, output to spatial dispersion handling part 33b.
Spatial dispersion handling part 33b sets the position of the adjustment revisal pixel in the uneven zone of each gray scale according to the revisal data from lsb decoder 32b input, and the tone correcting information output that will represent this setting result is to the time 34b of dispersion treatment section.
Particularly, spatial dispersion handling part 33b is according to the tone correcting information from lsb decoder 32b input, detect revisal pattern and basic revisal pattern, from revisal pattern storage part 39, extract revisal pattern and basic revisal pattern corresponding to this testing result, determine thus to adjust the revisal pixel.
The time 34b of dispersion treatment section is according to the revisal data from spatial dispersion handling part 33b input, in above-mentioned each piece of change ground setting per specified time limit (in the present embodiment as per 1 frame), adjust the position of revisal pixel, and will represent that this setting result's revisal information output arrives addition process section 35.
For example also can as shown in figure 22, by the applicable position of every frame deviation configuration pattern, press the position of per 1 frame change and adjustment revisal pixel.
In addition, spatial dispersion handling part 33b also can be opposite with the order of the time 34b of dispersion treatment section.That is, also can constitute the input revisal data from lsb decoder 32b to the time 34b of dispersion treatment section, the input revisal data from the time 34b of dispersion treatment section to spatial dispersion handling part 33b.
Addition process section 35, the 1st latchs section 36, the 2nd, and to latch function and the embodiment 1 of section 37 and D/A transformation component 38 much the same.
As mentioned above, revisal data creating device 10b according to present embodiment makes the whole pixels that are shown in display panel 21 corresponding to the inspection of same grayscale with the image of view data, this display frame of making a video recording, from camera data, extract brightness data, and from the brightness data that extracts, extract mottled brightness disproportionation.Afterwards, generation is detected by brightness disproportionation test section 15b, be applicable to the revisal data that consist of corresponding to the dark mottled inequality of position, the pattern sequence number (revisal pattern-information, revisal pattern identification information) of revisal pattern, the expression of the revisal pattern in the revisal zone in each brightness disproportionation zone or the pattern sequence number of the information of bright mottled inequality and basic revisal pattern (basic revisal pattern-information, basic pattern identification information), is stored among the revisal data store 31b that display device 20b is equipped with.Above-mentioned basic revisal pattern generates according to the deviate of brightness disproportionation amount.
Afterwards, display device 20b is when making image corresponding to view data be shown in the display panel 21, according to the revisal data of storing among the revisal data store 31b, in the revisal pattern of from revisal pattern storage part 39, storing and the basic revisal pattern, select rational revisal pattern and basic revisal pattern, revisal is corresponding to the brightness disproportionation in the revisal zone in brightness disproportionation zone.Here, above-mentioned basic revisal pattern is owing to generating according to the deviate of brightness disproportionation amount, so can generate the basic revisal pattern consistent with the degree of the brightness disproportionation amount of display panel.
Therefore, the revisal brightness disproportionation can prevent more reasonably that brightness disproportionation is by visual recognition accurately.
In addition, in the present embodiment, make the change in location of the adjustment revisal pixel in each brightness disproportionation zone by per specified time limit (every frame).That is, make adjustment revisal pixel space and temporally dispersion in the brightness disproportionation zone.
Image when the brightness value of whole pixels that thus, can be by making this brightness disproportionation zone changes without exception with the brightness value less than 1 gray scale that is equivalent to view data is near the image of visual recognition.Therefore, can prevent more reasonably that brightness disproportionation is by visual recognition.
In addition, in the present embodiment, come carrying out revisal with the regional corresponding revisal zone that produces mottled brightness disproportionation with respectively 4 kinds of basic revisal patterns of bright mottled inequality and dark mottled inequality.Thus, owing to only comprising the information of the bright mottled inequality of positional information (or positional information of the position of applicable revisal pattern), revisal pattern sequence number, expression corresponding to the revisal zone in each brightness disproportionation zone or dark mottled inequality in the revisal data and representing that 4 parameters of the information of basic revisal pattern get final product, so can reduce the data volume of revisal data, reduce the memory capacity of the revisal data store 31b requirement that is equipped with among the display device 20b.
［ embodiment 3 ］
An again embodiment of the present invention is described.For convenience of explanation, to embodiment 1,2 in parts with the same function of the parts of explanation add the symbol identical with it, and the description thereof will be omitted.
The formation of revisal strip brightness disproportionation has been described in the embodiment 1, the formation of the mottled brightness disproportionation of revisal has been described in the embodiment 2, and the configuration example when revisal strip brightness disproportionation and mottled brightness disproportionation both sides are described in the present embodiment.
Figure 23 is that expression is according to the revisal data creating device 10c of present embodiment and the formation block diagram of display device 20c.As shown in the drawing, revisal data creating device 10c also possesses mobile horizontal homogenizing handling part 14b, brightness disproportionation test section 15b and revisal data generating unit 16b except the formation of the revisal data creating device 10 of embodiment 1.In addition, display device 20b possesses display panel 21 and drive control part 22b.Thus, the revisal data generating unit 16 of revisal data creating device 10c generates the revisal data that are used for revisal strip brightness disproportionation, output to the drive control part 22c of display device 20c, revisal data generating unit 16b generates the revisal data that are used for the mottled brightness disproportionation of revisal, outputs to the drive control part 22c of display device 20c.The generation method of these each revisal data and embodiment 1,2 the same.
Figure 24 is the formation block diagram of the drive control part 22c that is equipped with among the display device 20c of expression according to present embodiment.As shown in the drawing, the drive control part 22 of drive control part 22c in embodiment 1, also possess revisal data store 31b, lsb decoder 32b, spatial dispersion handling part 33b, the time 34b of dispersion treatment section and revisal pattern storage part 39.By revisal data store 31, lsb decoder 32, spatial dispersion handling part 33 and the time dispersion treatment section 34 be configured for the 1st correcting section of revisal strip brightness disproportionation, be configured for the 2nd correcting section of the mottled brightness disproportionation of revisal by revisal data store 31b, lsb decoder 32b, spatial dispersion handling part 33b, the time 34b of dispersion treatment section and revisal pattern storage part 39.
Addition process section 35 bases are from the revisal data that are used for revisal strip brightness disproportionation of time dispersion treatment section 34 inputs and the revisal data that are used for the mottled brightness disproportionation of revisal of inputting from the time 34b of dispersion treatment section, revisal view data.
As with regard to the pixel of adjusting the revisal pixel selection, the maximum revisal amount of gray-scale value 1 gray scale can be set as with regard to the revisal data that are used for revisal strip brightness disproportionation and the revisal data both sides that are used for the mottled brightness disproportionation of revisal, also 2 gray scales can be set as.For example, in the situation of the adjustment revisal pixel in the zone corresponding with bright strip brightness disproportionation zone and bright mottled brightness disproportionation zone, the gray-scale value of this adjustment revisal pixel 2 gray scales can be reduced, also 1 gray scale can be only reduced.
In the present embodiment, by above-mentioned formation, can become to be difficult to visual recognition to strip brightness disproportionation and mottled brightness disproportionation both sides revisal is brightness disproportionation.
In addition, in the present embodiment, be provided for respectively the handling part (revisal data store 31, lsb decoder 32, spatial dispersion handling part 33 and time dispersion treatment section 34) of revisal strip brightness disproportionation and be used for the handling part (revisal data store 31b, lsb decoder 32b, spatial dispersion handling part 33b, the time 34b of dispersion treatment section and revisal pattern storage part 39) of the mottled brightness disproportionation of revisal.
With regard to the description method of revisal data, can record and narrate with the method for embodiment 1 the revisal data of the revisal that relates to the strip brightness disproportionation, record and narrate the revisal data of the revisal that relates to mottled brightness disproportionation with the method for embodiment 2.
Namely, for being recorded and narrated, the revisal information of strip brightness disproportionation is the revisal data, as long as resolving brightness disproportionation, when its multistage is divided into groups, consideration is cut apart display frame by each line pixel group that extends along the uneven direction of strip, and each line pixel group is recorded and narrated (a), and whether to carry out revisal, (b) be that dark uneven revisal or the revisal of bright inequality, (c) which revisal intensity grouping get final product.Only carrying out in the situation of one of the revisal of dark inequality or revisal of bright inequality, also can omit the information that relates to (b).Utilize the method, the data volume that can lack is recorded and narrated revisal information.
In addition, for being recorded and narrated, the revisal information of mottled brightness disproportionation is the revisal data, as long as separately basic revisal pattern is stored in the form, providing the revisal that the revisal of bright inequality also provides dark inequality (in the situation of one of the revisal of only carrying out bright inequality or dark uneven revisal, can omit this position), (c) to select which information to record and narrate from the basic revisal pattern of form by (a) at the basic revisal pattern of which position configuration in the display frame, (b) gets final product.
That is, relate to the record of revisal data of strip brightness disproportionation revisal by each of the line pixel group of virtual dividing display frame being specified whether revisal, the line pixel group of revisal is recorded and narrated its correction method.Relative therewith, the record that relates to the revisal data of mottled brightness disproportionation revisal takes the zone of revisal is specified separately the description method of its position and correction method.Like this, in the revisal and mottled brightness disproportionation revisal of strip brightness disproportionation, by changing respectively the revisal description method, be the record of the collocation method of basic revisal pattern if the former is the record that comprises the correction method that includes the unmatchful information of cutting apart each regional revisal of rear display frame, the latter, can reduce the data volume of whole revisal data.Two data both can be stored in respectively in the zone of determining of revisal data store 31, and the information that also can clip the border of specifying two data is come Coutinuous store.
With regard to the former information, may not record and narrate the correction method to the display frame Zone Full, for example, because even if the outer part of display frame has brightness disproportionation also unobvious, so can not carry out the revisal of outer part, at this moment, the revisal data that relate to outer part become not to be needed yet.As long as after cutting apart at least the display frame scope of easy visual recognition inequality, be set with unmatchful this each regional revisal and correction method and get final product.
［ embodiment 4 ］
Another embodiment of the invention is described.In the present embodiment, mainly illustrate the transmission type liquid crystal display device that is equipped with in the mobile model device such as portable phone, namely according in the display device that is shown by the existing RGB view data of all kinds of 6 bit tables, the revisal direction is parallel to the strip of source electrode line (data line) the bearing of trend example when uneven.But applicable object of the present invention is not limited to this.
Fig. 2 is that expression is according to the revisal data creating device 10 of present embodiment and the formation block diagram of display device 20.As shown in the drawing, revisal data creating device 10 possesses the data of demonstration generating unit 11, image pickup part 12, brightness data extracting part 13, mobile horizontal homogenizing handling part 14, brightness disproportionation test section 15 and revisal data generating unit 16.In addition, display device 20 possesses display panel 21 and drive control part 22.
Show when data generating unit 11 has or not brightness disproportionation in checking display panel 21, generate the demonstration data that are shown in this display panel, and output to the drive control part 22 of display panel 21.Usually, brightness disproportionation easy visual recognition when the image of middle gray carries out evenly showing with same grayscale comprehensively.Therefore, in the present embodiment, show that data generating unit 11 is uneven for sensed luminance, generate the view data that is used for showing in whole pixels of display panel the same grayscale image of middle gray, namely check and use view data.
Image pickup part 12 shootings show corresponding to by the display surface of the inspection that shows 11 generations of data generating unit with the display panel 21 of the image of view data, obtain camera data.As image pickup part 12, such as using ccd video camera etc.
Brightness data extracting part 13 extracts brightness data from the camera data that image pickup part 12 is obtained.
Pixel set corresponding to the zone of the source electrode line of above-mentioned display frame the zone of the Rack of source electrode line bearing of trend (or be parallel to) in the brightness data that mobile horizontal homogenizing handling part 14 extracts with regard to brightness data extracting part 13 is the line pixel group, calculate the average brightness of each pixel that comprises in this line pixel group, as the brightness value of this line pixel group.In addition, mobile horizontal homogenizing handling part 14 is carried out the mobile horizontal homogenizing of calculating moving average and is processed, and the brightness value of each pixel that namely comprises in the outer peripheral areas (for example perpendicular direction is in the zone of the 3mm width of this line pixel group bearing of trend centered by this line pixel group) with the specialized range that comprises this line pixel group comes the brightness value of above-mentioned each the line pixel group of equalization.
The solid line of Fig. 3 is the curve of the brightness value of brightness data that expression is extracted according to brightness data extracting part 13 each line pixel group of calculating, and dotted line is the curve of moving average of the brightness value of above-mentioned each the line pixel group of expression.Above-mentioned moving average is for the mild brightness disproportionation such as the brightness disproportionation removing backlight and cause and extract and be recognized as easily that uneven local luminance is uneven to be obtained, and expression does not have the brightness of uneven state.The solid line of Fig. 4 is illustrated in the mean value (mean value of the brightness of display frame integral body) that adds panel luminance from the brightness value of each line pixel group of Fig. 3 in the value that deducts after the above-mentioned moving average, and remove the curve of the brightness value of each the line pixel group after the brightness disproportionation impact of the smooth variation such as brightness disproportionation that backlight causes, dotted line is the curve of the mean value of expression panel luminance.Transverse axis in these each curves represents the position of each line pixel group, and the longitudinal axis represents the brightness value (mean value of brightness value that belongs to the pixel of each line pixel group) of each line pixel group.
Brightness value and its moving average of each line pixel group that brightness disproportionation test section 15 extracts from camera data according to brightness data extracting part 13 detect the zone that produces brightness disproportionation.
Particularly, the brightness value of each line pixel group and its moving average is poor in the brightness data that the brightness data extracting part 13 of calculating brightness disproportionation test section 15 extracts from camera data, the absolute value of the difference that detection is calculated is the zone more than or equal to the set formation of the line pixel group of defined threshold, as brightness disproportionation (brightness disproportionation zone).That is, the reasonable brightness value the when moving average of the brightness value of each line pixel group is considered as this each line pixel group and does not generate brightness disproportionation is compared with the brightness value of each line pixel group, detects thus the zone that produces brightness disproportionation.Thus, can remove the impact etc. of backlight after, rationally sensed luminance is uneven.
Namely, in transmission type liquid crystal display device, although usually in order to possess diffuser plate etc. to the display panel uniform irradiation from the irradiation light of backlight, but owing to being difficult to complete homogenising, so sometimes corresponding to the relative relative position of backlight, in the brightness from the irradiation light of backlight, produce deviation.But, because the Luminance Distribution that the relative position of relative backlight causes more gently changes (with reference to the inclination angle of the dotted line part among Fig. 3) at the wide region that spreads all over display panel, so seldom visual recognition is brightness disproportionation.That is, what human eye was recognized as brightness disproportionation is the large situation of brightness localized variation, brightness the space with large cycle continually varying situation under, almost illegible is uneven.Therefore, the luminance difference visual recognition that the Luminance Distribution from the irradiation light of backlight is caused seldom being arranged is brightness disproportionation.
On the other hand, the brightness value that will not produce the reasonable zone of brightness disproportionation if do not consider the impact of backlight is considered as steady state value in the Zone Full of display frame, then sometimes will be not visual recognition be that the zone of brightness disproportionation is detected and is brightness disproportionation, or be that the zone of brightness disproportionation is detected and is reasonable zone with visual recognition.That is, do not generate brightness value (rationally brightness value) difference corresponding to the position on the display panel in the reasonable zone of brightness disproportionation.
Therefore, in the present embodiment, the brightness data that 14 pairs of brightness data extracting part of mobile horizontal homogenizing handling part 13 extract is implemented the mobile horizontal homogenizing and is processed, and the brightness value (rationally brightness value) the when moving average of the brightness value of each line pixel group is considered as this each line pixel group for reasonable zone.Thus, can remove the impact from the Luminance Distribution of the irradiation light of backlight, and easily visual recognition is brightness disproportionation, rationally and easily detects with the difference zone jumpy of the brightness of neighboring region and be brightness disproportionation.
If the scope (perpendicular direction is in the scope of the bearing of trend of line pixel group) of equalization was much wider than the width in strip brightness disproportionation zone during the mobile horizontal homogenizing was processed, then preferably is set as in this scope everybody and is set up from the difference of the brightness value of the irradiation light of backlight relatively and the scope that the deviation of the reasonable brightness value of brightness value is enough little in the brightness disproportionation zone.Particularly, in the situation of the display panel about the hundreds of pixels that in the mobile devices such as portable phone, are equipped with * hundreds of pixels, preferably be set as more than or equal to 1mm, less than or equal to the scope of 5mm.In the present embodiment, use the display panel 21 of 360 pixels * 480 pixels, establishing above-mentioned scope is 3mm.
The information of the brightness disproportionation that revisal data generating unit 16 detects according to brightness disproportionation test section 15 generates and is used for being difficult to the revisal data that visual recognition is brightness disproportionation, after the revisal data that generate are implemented compression and processed, outputs to drive control part 22.In the situation of difference less than the stipulated standard value of the peak value of the brightness value of the line pixel group that also can in the brightness disproportionation zone, comprise and reasonable brightness value, be considered as not existing the brightness disproportionation of strip, do not make the revisal data.
In the present embodiment, as mentioned above, use according to showing the display device 20 that RGB view data of all kinds shows with 6.In this low gray scale panel, only by regulate merely the gray scale of display image data according to the testing result of brightness disproportionation, rationally revisal brightness disproportionation sometimes.If this be because the panel of 6 gray scales of minimum value of deviation of luminance values that is recognized as brightness disproportionation then less than the brightness value that is equivalent to 1 gray scale in the display image data, if for example as wanting the dark brightness disproportionation of revisal, revisal to become data are improved 1 gray scale, then revisal amount is excessive, visual recognition is bright brightness disproportionation, or opposite, if as wanting the bright brightness disproportionation of revisal, revisal to become data are reduced by 1 gray scale, then visual recognition is dark brightness disproportionation.
Therefore, revisal data generating unit 16 generates the revisal data, even if the luminance deviation that is used for relatively reasonable brightness value also is difficult to the brightness disproportionation that this luminance deviation of visual recognition causes less than the brightness value that is equivalent to view data 1 gray scale.
Fig. 5 is the key diagram for the generation method of explanation revisal pattern.Particularly, Fig. 5 is expression to each pixel curve of the mean value of the brightness value of each line pixel group of being drawn into corresponding to the camera data of the display panel 21 of the image state of these each gray-scale values with view data, according to the shooting demonstration of display gray shade value 9,10,11 inspection and panel luminance respectively.Among Fig. 5, the processing the same with Fig. 4 implemented in expression, and the brightness value of each the line pixel group of the brightness disproportionation of removing the smooth variation such as brightness disproportionation that backlight causes after affecting.
The absolute value of poor (the brightness disproportionation amount) of the brightness value of relatively reasonable brightness value is brightness disproportionation in the brightness data that brightness disproportionation test section 15 will extract from camera data for the part more than or equal to defined threshold detects.Particularly, be to be bright inequality on the occasion of, absolute value for the part more than or equal to threshold value detects with above-mentioned difference, be that negative value, absolute value are dark inequality for the part more than or equal to threshold value detects with above-mentioned difference.In the example of Fig. 5, it is bright brightness disproportionation that the part shown in C1, the C2 is detected, and the part shown in D1, the D2 is detected be dark brightness disproportionation.
The value of each brightness disproportionation part of then, revisal data generating unit 16 detections is poor with reasonable brightness value.In the example of Fig. 5, brightness disproportionation C1, C2, D1, D2 are detected respectively poor c1, c2, d1, d2.
In addition, reasonable part brightness value and the benchmark gray-scale value that compares that revisal data generating unit 16 detects the view data of the difference A of reasonable part brightness value and the reasonable part brightness value of the view data of relative datum gray-scale value of view data of high 1 gray scale of benchmark gray-scale value that compares and relative datum gray-scale value hangs down the difference B of reasonable part brightness value of the view data of 1 gray scale.
Afterwards, 16 couples of bright brightness disproportionation C1, C2 of revisal data generating unit calculate respectively above-mentioned poor c1, the c2 of this brightness disproportionation and ratio c1/B, the c2/B of above-mentioned poor B, and dark brightness disproportionation D1, D2 are calculated respectively above-mentioned poor d1, the d2 of this brightness disproportionation and ratio d1/A, the d2/A of above-mentioned poor A.
To bright brightness disproportionation above-mentioned than (c1/B, c2/B etc.) be less than or equal to 1 situation under, revisal data generating unit 16 generates the revisal data, and being used for will be to the pixel that belongs to the line pixel group corresponding with bright brightness disproportionation, reduce by 1 gray scale corresponding to the display image data to the pixel (adjusting the revisal pixel) of the ratio of the above-mentioned ratio of this brightness disproportionation.
In addition, in the situation that above-mentionedly surpass 1 than (c1/B, c2/B etc.), revisal data generating unit 16 generates the revisal data, be used for only to reduce the display image data of the pixel that belongs to the line pixel group corresponding with bright brightness disproportionation the gray-scale value corresponding to the integral part of above-mentioned ratio, and be used for and reduce again 1 gray scale to the display image data of the pixel (adjusting the revisal pixel) of the ratio corresponding with the fraction part of above-mentioned ratio.
Fig. 6 (b) is the expression position that generates bright brightness disproportionation and the curve that concerns an example to the value of the above-mentioned ratio of this each brightness disproportionation.
In addition, in the situation that above-mentionedly surpass 1 than (c1/B, c2/B etc.), revisal data generating unit 16 also can be made the revisal data, use divided by above-mentioned than the time result of division for less than or equal to 1 severals n 2 or more divided by above-mentioned ratio, will be to the display image data reduction n gray scale of the pixel (adjustment revisal pixel) of the ratio corresponding with this result of division.For example, in the situation in the brightness disproportionation zone that belongs to revisal intensity 5 shown in Fig. 6 (b), being considered as above-mentioned ratio is 1.25 (=5/4), calculate with n=2 divided by value (5/4 ÷ 2=5/8) afterwards, corresponding to this result of division, the ratio with 5 pixels in 8 pixels reduces by 2 gray scales.
In addition, to dark brightness disproportionation above-mentioned than (d1/A, d2/A etc.) be less than or equal to 1 situation under, revisal data generating unit 16 generates the revisal data, and being used for will be to the pixel that belongs to the line pixel group corresponding with dark brightness disproportionation, improve 1 gray scale with display image data to the above-mentioned pixel than corresponding ratio of this brightness disproportionation.
In addition, in the situation that above-mentionedly surpass 1 than (d1/A, d2/A etc.), revisal data generating unit 16 generates the revisal data, be used for only to improve the display image data of the pixel that belongs to the line pixel group corresponding with dark brightness disproportionation the gray-scale value corresponding to the integral part of above-mentioned ratio, and be used for and improve again 1 gray scale to the display image data of the pixel (adjusting the revisal pixel) of the ratio corresponding with the fraction part of above-mentioned ratio.
In the situation that above-mentionedly surpass 1 than (d1/A, d2/A etc.), revisal data generating unit 16 also can be made the revisal data, use divided by above-mentioned than the time result of division for less than or equal to 1 several n 2 or more divided by above-mentioned ratio, will be to the display image data raising n gray scale of the pixel of the ratio corresponding with this result of division.
Therefore, for example in the situation that above-mentioned ratio is less than or equal to 1, for the brightness disproportionation zone large to poor (with the deviation of reasonable brightness value) of reasonable brightness value, the pixel ratio of revisal display image data 1 gray scale becomes large (it is close that the pixel of revisal display image data 1 gray scale becomes), for the brightness disproportionation zone less to the difference of reasonable brightness value, the pixel ratio of revisal display image data 1 gray scale diminish (pixel of revisal display image data 1 gray scale become dredge).Fig. 7 is that the above-mentioned ratio in the expression revisal data is the key diagram less than or equal to the pixel example of gray scale 1 gray scale of 1 o'clock revisal display image data.
For example, in the situation that c1/B=1/3, generate revisal data (expression is to the view data of the ratio of the adjustment revisal pixel of the whole pixel counts on the source electrode line that is connected in the revisal object), be used for only will reducing to the view data of the pixel on the source electrode line corresponding with display image data brightness disproportionation C1 to 1 pixel the ground revisal of 1 gray scale along the bearing of trend of source electrode line by per 3 pixels.In addition, in the situation that d1/A=1/3 generates the revisal data, be used for only will improving to the view data of the pixel on the source electrode line corresponding with display image data brightness disproportionation D1 to 1 pixel the ground revisal of 1 gray scale along the bearing of trend of source electrode line by per 3 pixels.
In addition, in above-mentioned example, illustrate that the value of establishing ci/B or dj/A is the situation of identical value with the ratio of adjusting the revisal pixel, but be not limited to this, for example also can be according to the ratio of adjusting the revisal pixel with the value behind the predetermined augmenting factor on duty to ci/B or dj/A.In addition, also can set above-mentioned augmenting factor corresponding to the gray-scale value of display image data.For example, as mentioned above, brightness disproportionation under middle gray easily by visual recognition, in the situation that approaches black and white demonstration, be difficult to by visual recognition, therefore, also the above-mentioned augmenting factor under the middle gray can be set greatlyr than the above-mentioned augmenting factor that approaches under the black and white gray scale.
Revisal data generating unit 16 also can be corresponding to the value of above-mentioned ratio, each brightness disproportionation zone of dividing into groups.By carrying out grouping, compare with the situation of each brightness disproportionation zone being made corresponding to the revisal data of the value of above-mentioned ratio, can reduce the data size of revisal data, so can reduce the capacity that the revisal data store 31 (with reference to Figure 13 described later) of display device 20 outfits requires.That is, even if in the little situation of the capacity of revisal data store 31, also can rationally store the revisal data.
When bright brightness disproportionation is carried out above-mentioned grouping, 16 pairs of each pixels of revisal data generating unit (or each pixel group) are calculated the brightness disproportionation amount, the brightness value of each pixel in the brightness data that namely from camera data, extracts (or each gathers each pixel group of each pixel to a plurality of pixels) and the reasonable brightness value of this each pixel (or this each pixel group) poor, calculate the deviate (standard deviation of brightness disproportionation amount) of this brightness disproportionation amount, with to the difference B of the reasonable brightness value of the view data of benchmark gray-scale value and the reasonable brightness value of the view data of low 1 gray scale of the contrast benchmark gray-scale value deviate divided by the brightness disproportionation amount of calculating, deviate (standard deviation of the brightness disproportionation amount after gray scale converts) σ according to the brightness disproportionation amount after the gray scale conversion like this carries out the grouping in each brightness disproportionation zone.
Particularly, according to the brightness value in each brightness disproportionation zone of extracting the resulting camera data of display frame of inspection with the image demonstration of view data that makes from shooting corresponding to the benchmark gray-scale value, with difference ci corresponding to the reasonable brightness value of this inspections usefulness view data; To the reasonable brightness value of the view data of benchmark gray-scale value and the difference B of the reasonable brightness value of the view data of low 1 gray scale of contrast benchmark gray-scale value; The deviate σ of the above-mentioned brightness disproportionation amount after converting with gray scale divides into groups.For example, the as described below grouping.
Revisal intensity 1 ci/B is more than or equal to 0.25 σ, less than 0.75 σ
Revisal intensity 2 ci/B are more than or equal to 0.75 σ, less than 1.25 σ
Revisal intensity 3 ci/B are more than or equal to 1.25 σ, less than 1.75 σ
Revisal intensity 4 ci/B are more than or equal to 1.75 σ, less than 2.25 σ
Revisal intensity 5 ci/B are more than or equal to 2.25 σ
The strip brightness disproportionation of display panel differs widely in each display panel.That is, above-mentioned σ is large in the display panel that the brightness disproportionation degree is large (being the obvious panel of brightness disproportionation), and above-mentioned σ is little in the display panel that the brightness disproportionation degree is little (being that brightness disproportionation is difficult to by the panel of visual recognition).Therefore, above-mentioned σ also can be used for having or not in the judgement of strip brightness disproportionation.That is, if above-mentioned σ is less than or equal to setting, then can be judged as without the strip brightness disproportionation.
By take will be as mentioned above the deviate, σ of the brightness disproportionation amount of gray scale when converting as benchmark divide into groups (for example being grouped into the grouping of 5 kinds of degree), the panel both sides that the panel that the brightness disproportionation degree is large and brightness disproportionation degree are little all can divide into groups well.
Deviate, σ that Fig. 6 (b) expression is calculated as mentioned above, the brightness disproportionation amount when gray scale converts are the grouping example of 0.5 display panel.Because the zone of revisal intensity 1 is more than or equal to 0.25 σ, less than 0.75 σ, so be revisal intensity 1 with the brightness disproportionation territorial classification of above-mentioned ratio more than or equal to 0.125, less than 0.375.Equally, be revisal intensity 2 with the brightness disproportionation territorial classification of above-mentioned ratio more than or equal to 0.375, less than 0.625, be revisal intensity 3 with the brightness disproportionation territorial classification of above-mentioned ratio more than or equal to 0.625, less than 0.875, being revisal intensity 4 with the brightness disproportionation territorial classification of above-mentioned ratio more than or equal to 0.875, less than 1.125, is revisal intensity 5 with above-mentioned ratio more than or equal to 1.125 brightness disproportionation territorial classification.
In addition, for the brightness disproportionation of revisal intensity 1 zone, be considered as above-mentioned ratio and be the median of its grouping, namely 0.25, making reduces gray-scale value with the ratio of 1 pixel in 4 pixels revisal data of 1 gray scale.For example, in the position corresponding to the ck shown in Fig. 6 (b), the value of ck/B is 0.19, so be categorized as revisal intensity 1, makes the revisal data that gray-scale value reduced by 1 gray scale with the ratio of 1 pixel in 4 pixels.
In addition, for the brightness disproportionation zone of revisal intensity 2, being considered as above-mentioned ratio is 0.5, makes the revisal data that gray-scale value reduced by 1 gray scale with the ratio of 1 pixel in 2 pixels.For example, in the position corresponding to the cn shown in Fig. 6 (b), the value of cn/B is 0.44, so be categorized as revisal intensity 2, makes the revisal data that gray-scale value reduced by 1 gray scale with the ratio of 1 pixel in 2 pixels.
In addition, for the brightness disproportionation zone of revisal intensity 3, being considered as above-mentioned ratio is 0.75, makes the revisal data that gray-scale value reduced by 1 gray scale with the ratio of 3 pixels in 4 pixels.For example, in the position corresponding to the cl shown in Fig. 6 (b), the value of cl/B is 0.80, so be categorized as revisal intensity 3, makes the revisal data that gray-scale value reduced by 1 gray scale with the ratio of 3 pixels in 4 pixels.
In addition, for the brightness disproportionation zone of revisal intensity 4, being considered as above-mentioned ratio is 1, each pixel is made the revisal data that gray-scale value reduced by 1 gray scale.
In addition, for the brightness disproportionation of revisal intensity 5 zone, being considered as above-mentioned ratio is 1.25, makes gray-scale value with each pixel and reduces by 1 gray scale, the pixel of 1 pixel ratio in 4 pixels is reduced gray-scale value the revisal data of 1 gray scale (2 gray scales altogether descend) more again.For example, in the position corresponding to the cm shown in Fig. 6 (b), the value of cm/B is 1.29, so be categorized as revisal intensity 5, when being produced on gray-scale value with each pixel and reducing by 1 gray scale, with the ratio of 1 pixel in 4 pixels gray-scale value is reduced again the revisal data of 1 gray scale.
As mentioned above, by grouping brightness disproportionation zone, can be to the applicable identical revisal data in brightness disproportionation zone of same packets, so can reduce the kind of revisal data.Therefore, can reduce the capacity of the revisal data of storage usefulness in the revisal data store 31 that is equipped with in the drive control part 22 of display device 20.
Like this, above-mentioned revisal data are for example by consisting of corresponding to the source electrode line (positional information in revisal zone) of brightness disproportionation and grouping information to this source electrode line.
In addition, in the above description, revisal data generating unit 16 only the pixel in the brightness disproportionation zone that detects as the revisal object, but be not limited to this, the pixel that also can comprise the zone of brightness disproportionation zone and its outer peripheral areas (for example scope apart from about brightness disproportionation several pixels of zone or the number mm) is the revisal object.That is, both can with the brightness disproportionation zone as the revisal zone, also can will comprise the zone of brightness disproportionation zone and its outer peripheral areas as the revisal zone.Like this, by in the revisal zone, comprising outer peripheral areas, can blur the profile in brightness disproportionation zone, more be difficult to visual recognition brightness disproportionation zone.
In addition, the whole brightness disproportionations zone that may not revisal detects, also part brightness disproportionation zone in the brightness disproportionation zone that detects of revisal only.For example, also can corresponding to the size in brightness disproportionation zone or apart from the degree of the reasonable deviation of brightness value etc., only extract the brightness disproportionation zone of easy visual recognition and come revisal.
In addition, the making that revisal data generating unit 16 also can be calculated respectively above-mentioned revisal data to R (Red), G (Green), each secondary image element of B (Blue).
Also can generate the revisal data to 1 look among R, G, the B (for example G), it is common to its allochromatic colour.Because in most cases the strip brightness disproportionation recurs in the zone of specialized range, even if so will be applicable to the revisal data that 1 look among R, G, the B generates the secondary image element of its adjacent allochromatic colour, with R, G, the B situation that generates separately respectively the revisal data of all kinds are compared, the degree of image quality is also substantially constant.In addition, by to R, G, the common revisal data of B use of all kinds, with the situation of the independent revisal data of these generations of all kinds is compared, can reduce in the display device 20 described later the revisal data store 31 desired memory capacity that are used for storage revisal data that are equipped with.
Afterwards, the revisal data of 16 pairs of generations of revisal data generating unit are implemented compression and are processed, and will compresss the drive control part 22 that revisal data after the processing output to display device 20.The size of the revisal data after the method that compression is processed and the compression without particular limitation of, as long as rationally set corresponding to the memory capacity of the revisal data store 31 that is equipped with in the display device 20 etc.For example, can compress processing with existing known methods such as run-length codings.In run-length coding, for example the revisal data before compression are 0010000000011 ... situation under, the data behind the coding become ［ 0,2 ］ ［ 1,1 ］ ［ 0,8 ］ ［ 1,2 ］.Perhaps, also can omit 0 value, show as ［ 2 ］ ［ 1,1 ］ ［ 8 ］ ［ 1,2 ］.
By compression revisal data like this, although the method for also processing based on compression, for example the considerably less memory capacity of 1kbit degree is stored having for example revisal data of the display device of the display panel of 360 pixels * 480 pixels.Therefore, can be with the dummy section of the existing storer that is equipped with in these display device as revisal data store 31.
Figure 13 is the formation block diagram of the drive control part 22 of outfit in the expression display device 20.As shown in the drawing, drive control part 22 possesses revisal data store 31, lsb decoder 32, spatial dispersion handling part 33, time dispersion treatment section 34, addition process section 35, the 1st latchs section 36, the 2nd and latchs section 37 and D/A transformation component 38.By spatial dispersion handling part 33, time dispersion treatment section 34 and addition process section 35 form the view data correcting section.
Revisal data store 31 is storage nonvolatile memories from the revisal data of revisal data creating device 10 inputs when checking display device 20.In the present embodiment, the revisal data after storage is processed by the 10 enforcement compressions of revisal data creating device in revisal data store 31.
When lsb decoder 32 will be shown in the display panel 21 corresponding to the image of display image data, read the revisal data of storage in the revisal data store 31 in display device 20, decode after these revisal data, output to spatial dispersion handling part 33.Memory capacity in revisal data store 31 has in the situation of enough and to spare, and revisal data generating unit 16 can not be stored in the revisal data in the revisal data store 31 compressively yet, at this moment, can omit lsb decoder 32 yet.
Spatial dispersion handling part 33 is according to the revisal data from lsb decoder 32 inputs, set corresponding to adjusting the position of revisal pixel in each source electrode line in brightness disproportionation zone, and the revisal data that will represent this setting result outputs to time dispersion treatment section 34.Particularly, determine will be from the source electrode line end the pixel of which pixel be made as adjust revisal pixel (off-set value) in, be set as adjustment revisal pixel with this pixel with apart from the pixel of the every predetermined distance of this pixel.
In a plurality of source electrode lines of adjacency, produce in the situation of brightness disproportionation, also can set the position of respectively adjusting the revisal pixel, make the position of adjusting in these each source electrode lines on the revisal pixel source electrode line bearing of trend each other different between the source electrode line of adjacency, and disperse.Figure 14 is the key diagram of expression revisal data one example at this moment.
Time, dispersion treatment section 34 was according to the revisal data from 33 inputs of spatial dispersion handling part, with the position of adjustment revisal pixel in each source electrode line of change ground setting per specified time limit (for example per 1 frame), and will represent that this setting result's revisal data output to addition process section 35.Fig. 1 is that expression is by the key diagram of revisal data one example of time dispersion treatment section 34 settings.In the example shown in this figure, time, dispersion treatment section 34 adjusted the constant mode of ratio (adjusting revisal pixel spacing each other) of revisal pixel with maintenance, and the position (off-set value) of adjusting the revisal pixel is changed along the source electrode line bearing of trend by per 1 frame.
In addition, spatial dispersion handling part 33 also can be opposite with time dispersion treatment section 34 order.That is, also can constitute from lsb decoder 32 to time dispersion treatment section 34 input revisal data, dispersion treatment section 34 inputs the revisal data to spatial dispersion handling part 33 from the time.
Addition process section 35 is by adding in the display image data that is input to display device 20 from the revisal data of time dispersion treatment section 34 input, the revisal display image data, and the display image data after the revisal is outputed to the 1st latch section 36.That is, in each pixel in the display image data by the adjustment revisal pixel of revisal data representation, carry out the revisal of gray-value variation 1 gray scale (corresponding to the revisal data, improving at least or reduce by 1 gray scale) that makes at least display image data and process.
Particularly, be regional less than or equal to 1 brightness disproportionation to above-mentioned ratio, make gray-value variation 1 gray scale of adjusting the revisal pixel, and to other not revisals of pixel.In addition, above-mentioned ratio surpassed 1 brightness disproportionation zone, when the gray-scale value that makes this each pixel only changes gray-scale value corresponding to the integral part of above-mentioned ratio, make again gray-value variation 1 gray scale of adjusting the revisal pixel.Perhaps, surpass 1 brightness disproportionation zone for above-mentioned ratio, also can make the gray-scale value of adjusting the revisal pixel only change gray-scale value corresponding to the said n value, and to other not revisals of pixel.
The 1st to latch section 36 synchronous with the sampling pulse that generates according to clock signal, and the display image data after the revisal of addition process section 35 outputs of sampling successively latchs the view data corresponding to 1 line (1 gate line).The 2nd latchs section 37 latchs by the 1st view data that latchs 1 line that section 36 latchs again.
D/A transformation component (digital-to-analog transformation component) 38 will be transformed to simulating signal by the 2nd view data that latchs 1 line that section 37 latchs, with the timing output of regulation each source electrode line to display panel 21.
Display panel 21 possesses a plurality of gate lines (scan signal line) and a plurality of source electrode lines (data signal line), in each the rectangular zone that is made of these gate lines and source electrode line differentiation pixel (all not shown) is set respectively.
Each pixel is made of with the transistor AND gate pixel capacitance switch, and pixel capacitance consists of (all not shown) by liquid crystal capacitance and the auxiliary capacitor that adds in case of necessity.Switch is connected on the gate line with transistorized grid, and source electrode is connected on the source electrode line, and drain electrode is connected on the electrode of pixel capacitance.Another electrode of pixel capacitance is connected on the common common electrode lines of whole pixels.
Thus, if select gate line by gate drivers (not shown), then be connected in the switch transistor turns of each pixel on the selecteed gate line, synchronous with it, the voltage that will put on from the D/A transformation component 38 of drive control part 22 on each source electrode line puts on the corresponding pixel capacitance.
Between the selecting period of gate line, stop, switch with transistor be truncated during, the voltage when pixel capacitance continue to keep this to block.The transmitance of liquid crystal or reflectivity change by the voltage that puts on the liquid crystal capacitance, so by selecting gate line, apply voltage corresponding to view data to source electrode line, can make the show state of pixel be matched with view data and change.
As mentioned above, revisal data creating device 10 according to present embodiment makes the whole pixels that are shown in display panel 21 corresponding to the inspection of same grayscale with the image of view data, this display frame of making a video recording, from camera data, extract brightness data, and from the brightness data that extracts, extract the brightness disproportionation of strip.Afterwards, generation comprise each brightness disproportionation zone positional information, with the revisal data of grouping information in these each brightness disproportionation zones of dividing into groups according to the brightness disproportionation amount deviate in each brightness disproportionation zone, be stored in the revisal data store 31 that display device 20 is equipped with.
Afterwards, display device 20 according to positional information and the grouping information in each brightness disproportionation zone in the revisal data of storage in the revisal data store 31, is carried out the revisal of brightness disproportionation when making image corresponding to display image data be shown in the display panel 21.
Like this, by each brightness disproportionation zone of dividing into groups, can reduce the capacity of revisal data, so even if in the little situation of the capacity of revisal data store 31, also can reasonably store the revisal data.
Figure 15 be expression according to shooting show corresponding to do not carry out the resulting brightness data of camera data with the display panel 21 of the state of the image of view data of inspection that revisal processes, with show according to shooting corresponding to implementing inspection that revisal the processes curve with the brightness data of the resulting brightness data of camera data of the display panel 21 of the image of view data.Transverse axis represents the position of each line pixel group, and the longitudinal axis represents the brightness value (mean value of brightness value that belongs to the pixel of above-mentioned each line pixel group) of each line pixel group.From these curves as can be known, by the correction method according to present embodiment, can not come the revisal view data by visual recognition ground mode with the brightness disproportionation of strip.
In addition, in the present embodiment, make the change in location of adjusting the revisal pixel by per 1 frame.That is, make position space and the temporally dispersion in the brightness disproportionation zone of adjusting the revisal pixel.
Thus, can prevent more reasonably that brightness disproportionation is by visual recognition.
In the present embodiment, in the revisal data store 31 that display device 20 is equipped with, information and the grouping information of pre-stored expression brightness disproportionation regional location, the spatial dispersion handling part 33 that display device 20 is equipped with and the time dispersion treatment section 34 determine when the image that shows corresponding to display image data, make the locational space of the adjustment revisal pixel in the brightness disproportionation zone and disperse temporally.Thus, can reduce the data size of revisal data, reduce the memory capacity that revisal data store 31 requires.
In the present embodiment, the situation of the strip brightness disproportionation that revisal is parallel with the source electrode line bearing of trend has been described, but has been not limited to this, but the also revisal strip brightness disproportionation parallel with the gate line bearing of trend.At this moment, for example as long as according to the brightness data that extracts from camera data, detection is corresponding to the mean value of the brightness value of the line pixel group of each gate line bearing of trend, this testing result is carried out the mobile horizontal homogenizing in the direction vertical with the line pixel group to be processed, according to these results, the detection of carrying out brightness disproportionation gets final product.In addition, as long as the testing result revisal view data according to brightness disproportionation, to select pixel corresponding to every predetermined distance in the gate line in brightness disproportionation zone as adjusting the revisal pixel, make the gray-scale value of the adjustment revisal pixel of selecting change at least 1 gray scale and get final product.
In addition, in the present embodiment, when calculating in each brightness disproportionation zone rationally during the deviation of luminance values of brightness value, the moving average of the brightness value of line pixel group is considered as reasonable brightness value, calculates the deviation of above-mentioned brightness value.Thus, even if such as reasonable brightness value based on the situation different corresponding to the position in the display frame from the Luminance Distribution of the irradiation light of backlight etc. under, also can be easily and reasonably calculate the extent of deviation of the brightness value of relatively reasonable brightness value in each brightness disproportionation zone.For example in situation about knowing in advance corresponding to the reasonable brightness value of the position in the display frame, also can calculate according to this reasonable brightness value the deviation of brightness value in each brightness disproportionation zone.
［ embodiment 5 ］
Another embodiment of the invention is described.For convenience of explanation, to embodiment 4 in the parts of explanation have the identical symbol of the additional and embodiment of the parts of the same function 4, and the description thereof will be omitted.
The formation of revisal strip inequality has been described, the configuration example when the local mottled inequality of revisal (mottled inequality) is described in the present embodiment in the embodiment 4.
Figure 16 is that expression is according to the revisal data creating device 10b of present embodiment and the formation block diagram of display device 20b.As shown in the drawing, revisal data creating device 10b possesses mobile horizontal homogenizing handling part 14b, brightness disproportionation test section 15b and revisal data generating unit 16b, replaces mobile horizontal homogenizing handling part 14, brightness disproportionation test section 15 and the revisal data generating unit 16 of the revisal data creating device in the embodiment 4.In addition, display device 20b possesses display panel 21 and drive control part 22b.The function and the embodiment 4 that show data generating unit 11, image pickup part 12 and brightness data extracting part 13 are much the same.
Show that data generating unit 11 makes corresponding to same gray scale (benchmark gray-scale value.For example gray-scale value 10) the image of view data be shown in the Zone Full of display panel 21, mobile horizontal homogenizing handling part 14b carries out the mobile horizontal homogenizing processing that the brightness value of each pixel is replaced into the brightness value mean value of each pixel that comprises in the piece of the given size centered by this each pixel to the brightness data that brightness data extracting part 13 is drawn into from the camera data of image pickup part 12 these images of shooting.Below, the brightness value of each pixel after the mobile horizontal homogenizing processed is called moving average.
In addition, the afore mentioned rules size is much wider than the width in mottled brightness disproportionation zone, preferably is set as in this given size everybody and is set up from brightness value in the uneven zone of difference relative brightness of the brightness value of the irradiation light of backlight apart from the reasonable much smaller scope of deviation of brightness value.Particularly, in the situation of the display panel of the hundreds of pixels that in the mobile devices such as portable phone, are equipped with * hundreds of pixel degree, preferably be set as the scope of 2mm * 2mm～10mm * 10mm.In the present embodiment, use the display panel 21 of 360 pixels * 480 pixels, establishing above-mentioned scope is 5mm * 5mm.Longitudinal length in the afore mentioned rules size may not be identical with lateral length.
Poor (the brightness disproportionation amount) of the brightness value of each pixel that the brightness data extracting part 13 of calculating brightness disproportionation test section 15b extracts and the moving average of this each pixel, and the absolute value that detects this difference is more than or equal to the zone more than the continuous pixels specified quantity of defined threshold, as mottled brightness disproportionation.
In addition, afore mentioned rules quantity is as long as rationally set to prevent that brightness disproportionation is by visual recognition corresponding to the size of display device or purposes etc.
Revisal data generating unit 16b is according to the testing result of brightness disproportionation test section 15b, generate the revisal data that are used for being difficult to the mottled brightness disproportionation of visual recognition, and the revisal data that generate are implemented compression process, output to the drive control part 22b that display device 20b is equipped with.
The correction method of mottled inequality in the present embodiment is described here.The mottled inequality of supposing in the present embodiment be when in display panel, showing even image than around seem bright bright mottled inequality with than around seem dark dark mottled inequality.
The concept map of the correction method of the mottled inequality shown in Figure 17 in the present embodiment.
In the present embodiment, as the correction method of mottled inequality, adopt following method, namely as shown in figure 17, to bright mottled inequality and the dark mottled 4 kinds of revisal patterns that only do not use respectively, be applicable to occur the part of mottled inequality, make thus mottled inequality unobvious.The revisal pattern that uses in the revisal of mottled inequality in the situation that present embodiment be not made as respectively 4 kinds to light and shade is mottled, but be not limited to this.The kind of revisal pattern is more, then can carry out better uneven revisal, but the memory capacity of storage increases in the revisal pattern storage part 39 that display device 20b is equipped with (with reference to Figure 18 described later).Therefore, the kind of revisal pattern is as long as rationally adjust corresponding to the capacity of revisal pattern storage part 39.
If then be generally less than or equal to 1 gray scale because the brightness disproportionation amount of mottled inequality is scaled gray-scale value, so must spatially selecting configuration, the revisal pattern carries out the pixel of positive 1 gray scale or negative 1 tone correcting (adjusting the revisal pixel).Here, so-called brightness disproportionation amount is moving average poor of the brightness value of each pixel of extracting of brightness data extracting part 13 and this each pixel.
Use so-called dithering less than or equal to the revisal of 1 gray scale.So-called dithering is for the image processing method with few more gray scales of gray scale simulation ground performance.In the correction method of the mottled inequality in the present embodiment, because revisal is less than or equal to the inequality of 1 gray scale, so 1 gray scale was divided into for 16 stages, carry out revisal less than or equal to 1 gray scale with 1/16 gray scale unit.Particularly, as dither matrix, use the matrix that distributes 1～16 value to each piece (mass) of shown in Figure 19 4 * 4.For example, wanting to reduce in the situation of 5/16 grey gray scale of measuring, needing only the revisal of from 1 to 5 corresponding pixel of dither matrix shown in Figure 19 being carried out negative 1 gray scale.
The pixel of color display panel has R (red), G (green), B (indigo plant), but in the present embodiment, as shown in figure 19, to R, G, the B dither matrix difference that makes respectively of all kinds.Thus, sparse configuration revisal pixel is carried out uneven revisal better spatially.
Like this, in the present embodiment, use 4 * 4 dither matrixs, carry out revisal less than or equal to 1 gray scale with 1/16 gray scale unit.Therefore, the base unit of revisal is the zone of 4 pixels * 4 pixels.
In the present embodiment, use above-mentioned 4 * 4 dither matrixs, generate to be used for the basic revisal pattern of 4 pixels of the mottled inequality of revisal * 4 pixels.Figure 20 represents to use the basic revisal pattern of 4 pixels that above-mentioned dither matrix makes * 4 pixels.Among Figure 20, the pixel beyond white (pixel that represents with oblique line etc.) is the adjustment revisal pixel that improves 1 gray scale or reduce by 1 gray scale.In addition, dither matrix is stored among the drive control part 22b of display device 20, drive control part 22b calculates basic revisal pattern according to dither matrix, and the basic pattern that perhaps will use dither matrix to calculate in advance is stored in the revisal pattern storage part 39 of drive control part 22b outfit.
In the present embodiment, for bright mottled inequality and dark mottled inequality each, 4 basic revisal patterns are stored in the revisal pattern storage part (basic revisal pattern storage part) 39, the basic revisal pattern that spatial dispersion handling part 33 is selected corresponding to the brightness disproportionation amount deviate (standard deviation of brightness disproportionation amount) in each brightness disproportionation zone determines to adjust the revisal pixel.
For example, if the moving average (reasonable brightness value) of the brightness value of establishing each pixel that the brightness data extracting part 13 of certain display panel extracts and this each pixel poor, be that the deviate (standard deviation of brightness disproportionation amount) of brightness disproportionation amount is 3, be 10 to the reasonable brightness value of the view data of benchmark gray-scale value with difference A to the reasonable brightness value of the view data that is higher than benchmark gray-scale value 1 gray scale, the deviate σ of the brightness disproportionation amount after then gray scale converts is 0.3.
Use this value, to dark mottled inequality, begin to select in order the basic revisal pattern of 4 pixels * 4 pixels corresponding to 0.5 σ, 1.0 σ, 1.5 σ, 2.0 σ from weak revisal.Namely, in the situation that Figure 20, as the basic revisal pattern of above-mentioned 44 pixels * 4 pixels, select near gray scale 0.15 (0.5 * 0.3) basic 02, near gray scale 0.30 (1.0 * 0.3) basic 05, near gray scale 0.45 (1.5 * 0.3) basic 07, near basic 10 of gray scale 0.60 (2.0 * 0.3).Afterwards, in the zone of the applicable basic revisal pattern of selecting, carry out revisal, improving 1 gray scale corresponding to the gray-scale value of the pixel of white pixel in addition in the basic revisal pattern.
In the explanation afterwards, if the basic revisal pattern corresponding to 4 pixels of 0.5 σ * 4 pixels is the A1 pattern, basic revisal pattern corresponding to 4 pixels of 1.0 σ * 4 pixels is the B1 pattern, basic revisal pattern corresponding to 4 pixels of 1.5 σ * 4 pixels is the C1 pattern, is the D1 pattern corresponding to the basic revisal pattern of 4 pixels of 2.0 σ * 4 pixels.Here, illustrate that mainly above-mentioned A1 pattern, B1 pattern, C1 pattern and D1 pattern correspond respectively to the situation of 0.5 σ, 1.0 σ, 1.5 σ and 2.0 σ, but be not limited to this, basic revisal pattern can rationally be adjusted corresponding to the degree of brightness disproportionation.For example, also can use pattern corresponding to 1.2 σ, 1.6 σ, 2.0 σ and 2.4 σ as A1 pattern, B1 pattern, C1 pattern and D1 pattern.
To the basic revisal pattern of 44 pixels of bright mottled inequality * 4 pixels can by with obtain corresponding to the same method of 3 basic revisal method of pattern selections of dark mottled inequality.Therefore, from 16 basic revisal patterns shown in Figure 20, select 4 basic revisal patterns corresponding to the brightness disproportionation amount deviate of bright mottled inequality, in the zone of the applicable basic revisal pattern of selecting, carry out revisal, reducing by 1 gray scale corresponding to the gray-scale value of the pixel of white pixel in addition in the basic revisal pattern.In the explanation of back, 4 basic revisal patterns establishing corresponding to bright mottled inequality are respectively A2 pattern, B2 pattern, C2 pattern and D2 pattern.
In the present embodiment, for the revisal zone corresponding to dark mottled inequality, carry out revisal with the pattern after 4 basic revisal combinations of patterns that make above-mentioned A1 pattern～D1 pattern, for the revisal zone corresponding to bright mottled inequality, usefulness makes the pattern after above-mentioned A2 pattern～D2 combinations of patterns carry out revisal.
Particularly, mottled inequality is the brightness disproportionation amount maximum of its central part usually, and far away apart from the center, then the brightness disproportionation amount is less.Therefore, in the present embodiment, make 4 basic revisal combinations of patterns, so that more near the central part in revisal zone, revisal intensity is stronger.Figure 21 illustrates the example of the revisal pattern that 4 basic revisal patterns of combination obtain.Here, the A among Figure 21 is corresponding to A1 pattern and A2 pattern, and B is corresponding to B1 pattern and B2 pattern, and C is corresponding to C1 pattern and C2 pattern, and D is corresponding to D1 pattern and D2 pattern.That is, the A among Figure 21, B, C, D hold respectively the size of 4 pixels * 4 pixels.In addition, make O among Figure 21 all the time corresponding to basic 00 among Figure 20.That is, the partial pixel corresponding to O among Figure 21 is not carried out revisal.For example, as long as corresponding to the size in the revisal zone corresponding with mottled inequality, any gets final product to select pattern 1～pattern shown in Figure 21 4.Example shown in Figure 21 is an example of revisal pattern, and the combined method of basic revisal pattern is not limited to this, can rationally adjust corresponding to the size of mottled inequality or shape etc.
Like this, will be for the revisal pattern magnitude (or size and shape) of the mottled inequality of the revisal form corresponding with the collocation method of 4 basic revisal patterns by preparation, degree (deviate of brightness disproportionation amount in the mottled inequality) corresponding to the brightness disproportionation of display panel is come 4 basic revisal patterns of choose reasonable, selection is corresponding to the revisal pattern of the size (or size and shape) in the revisal zone corresponding with mottled inequality, the reasonably mottled inequality of revisal.
In addition, according to said method, but because few revisal pattern and the basic revisal pattern of usage quantity carries out the revisal of mottled inequality, so can make the memory capacity of revisal data store 31b and revisal pattern storage part 39 considerably less.
In the present embodiment, brightness disproportionation test section 15b selects the revisal pattern of the size of the revisal area size with the most approaching brightness disproportionation zone corresponding to actual display panel from revisal pattern shown in Figure 21, and will be suitable for the revisal pattern position (or the position in revisal zone), revisal pattern the pattern sequence number and represent dark mottled inequality or the information of bright mottled inequality is delivered to revisal data generating unit 16b.
Revisal data generating unit 16b is to bright mottled inequality and the dark mottled basic revisal pattern of not selecting respectively corresponding to A, B, C, D in the revisal pattern.
Like this, revisal data generating unit 16b except the pattern sequence number of the position (or the position in each revisal zone) of the applicable revisal pattern that sends from brightness disproportionation test section 15b, revisal pattern and represent dark mottled inequality or the information of bright mottled inequality, also generate bright mottled inequality and the dark mottled revisal data that do not illustrate respectively corresponding to the basic revisal pattern of A, B, C, D in the revisal pattern.
Afterwards, revisal data generating unit 16b implements compression to the revisal data that generate and processes, and will compress the drive control part 22b that revisal data after the processing output to display device 20b.The size of the revisal data after the method that compression is processed and the compression without particular limitation of, as long as rationally set corresponding to the memory capacity of the revisal data store 31b that is equipped with among the display device 20b etc.
Figure 18 is the formation block diagram of the drive control part 22b that is equipped with among the expression display device 20b.As shown in the drawing, drive control part 22b possesses revisal data store 31b, lsb decoder 32b, spatial dispersion handling part 33b, the time 34b of dispersion treatment section, addition process section 35, the 1st latchs section 36, the 2nd and latchs section 37, D/A transformation component 38 and revisal pattern storage part 39.Form the view data correcting section by spatial dispersion handling part 33b, the time 34b of dispersion treatment section and addition process section 35.The basic revisal pattern that in advance storage of revisal pattern storage part 39 is shown in Figure 20 and revisal pattern shown in Figure 21.
Revisal data store 31b is storage nonvolatile memory from the revisal data of revisal data creating device 10b input when checking display device 20b.In the present embodiment, will implement to compress the revisal data of processing by revisal data creating device 10b and be stored in revisal data store 31b.
When lsb decoder 32b will be shown in the display panel 21 corresponding to the image of view data, read the revisal data of storing among the revisal data store 31b in display device 20b, after these revisal data of decoding, output to spatial dispersion handling part 33b.Memory capacity at revisal data store 31b has in the situation of enough and to spare, and revisal data generating unit 16b can not be stored in the revisal data among the revisal data store 31b compressively yet, at this moment, can omit lsb decoder 32b yet.
Spatial dispersion handling part 33b sets the position of the adjustment revisal pixel in the uneven zone of each gray scale, and will represent that this setting result's revisal data output to the time 34b of dispersion treatment section according to the revisal data from lsb decoder 32b input.
Particularly, spatial dispersion handling part 33b is according to the revisal data from lsb decoder 32b input, detect revisal pattern and basic revisal pattern, from revisal pattern storage part 39, extract revisal pattern and basic revisal pattern corresponding to this testing result, determine thus to adjust the revisal pixel.
The time 34b of dispersion treatment section is according to the revisal data from spatial dispersion handling part 33b input, by the position of adjustment revisal pixel in above-mentioned each piece of change ground setting per specified time limit (being per 1 frame in the present embodiment), and will represent that this setting result's revisal data output to addition process section 35.
For example also can as shown in figure 22, by the applicable position by every frame deviation ground configuration pattern, press the position of per 1 frame change and adjustment revisal pixel.
In addition, spatial dispersion handling part 33b also can be opposite with the order of the time 34b of dispersion treatment section.That is, also can constitute the input revisal data from lsb decoder 32b to the time 34b of dispersion treatment section, the input revisal data from the time 34b of dispersion treatment section to spatial dispersion handling part 33b.
Addition process section 35, the 1st latchs section 36, the 2nd, and to latch function and the embodiment 4 of section 37 and D/A transformation component 38 much the same.
As mentioned above, revisal data creating device 10b according to present embodiment makes the whole pixels that are shown in display panel 21 corresponding to the inspection of same grayscale with the image of view data, this display frame of making a video recording, from camera data, extract brightness data, and from the brightness data that extracts, extract mottled brightness disproportionation.Afterwards, generation is detected by brightness disproportionation test section 15b, be applicable to the revisal data that consist of corresponding to the dark mottled inequality of position, the pattern sequence number (revisal pattern-information, revisal pattern identification information) of revisal pattern, the expression of the revisal pattern in the revisal zone in each brightness disproportionation zone or the pattern sequence number of the information of bright mottled inequality and basic revisal pattern (basic revisal pattern-information, basic pattern identification information), is stored among the revisal data store 31b that display device 20b is equipped with.Above-mentioned basic revisal pattern generates according to the deviate of brightness disproportionation amount.
Afterwards, display device 20b is when making image corresponding to view data be shown in the display panel 21, according to the revisal data of storing among the revisal data store 31b, in the revisal pattern of from revisal pattern storage part 39, storing and the basic revisal pattern, select rational revisal pattern and basic revisal pattern, revisal is corresponding to the brightness disproportionation in the revisal zone in brightness disproportionation zone.Here, above-mentioned basic revisal pattern is owing to generating according to the deviate of brightness disproportionation amount, so can generate the basic revisal pattern consistent with the degree of the brightness disproportionation amount of display panel.
Therefore, the revisal brightness disproportionation can prevent more reasonably that brightness disproportionation is by visual recognition accurately.
In addition, in the present embodiment, make the change in location of the adjustment revisal pixel in each brightness disproportionation zone by per specified time limit (every frame).That is, make adjustment revisal pixel space and temporally dispersion in the brightness disproportionation zone.
Image when the brightness value of whole pixels that thus, can be by making this brightness disproportionation zone changes without exception with the brightness value less than 1 gray scale that is equivalent to view data is near the image of visual recognition.Therefore, can prevent more reasonably that brightness disproportionation is by visual recognition.
In addition, in the present embodiment, with bright mottled inequality and dark mottled not respectively 4 kinds of basic revisal patterns come carrying out revisal with the regional corresponding revisal zone that produces mottled brightness disproportionation.Thus, owing to only comprising the information of the bright mottled inequality of positional information (or positional information of the position of applicable revisal pattern), revisal pattern sequence number, expression corresponding to the revisal zone in each brightness disproportionation zone or dark mottled inequality in the revisal data and representing that 4 parameters of the information of basic revisal pattern get final product, so can reduce the data volume of revisal data, reduce the memory capacity of the revisal data store 31b requirement that is equipped with among the display device 20b.
［ embodiment 6 ］
Another embodiment of the invention is described.For convenience of explanation, to embodiment 4,5 in parts with the same function of the parts of explanation add the symbol identical with it, and the description thereof will be omitted.
The formation of revisal strip brightness disproportionation has been described in the embodiment 4, the formation of the mottled brightness disproportionation of revisal has been described in the embodiment 5, and the configuration example when revisal strip brightness disproportionation and mottled brightness disproportionation both sides are described in the present embodiment.
Figure 23 is that expression is according to the revisal data creating device 10c of present embodiment and the formation block diagram of display device 20c.As shown in the drawing, revisal data creating device 10c also possesses mobile horizontal homogenizing handling part 14b, brightness disproportionation test section 15b and revisal data generating unit 16b except the formation of the revisal data creating device 10 of embodiment 4.In addition, display device 20c possesses display panel 21 and drive control part 22c.Thus, the revisal data generating unit 16 of revisal data creating device 10c generates the revisal data that are used for revisal strip brightness disproportionation, output to the drive control part 22c of display device 20c, revisal data generating unit 16b generates the revisal data that are used for the mottled brightness disproportionation of revisal, outputs to the drive control part 22c of display device 20c.The generation method of these each revisal data and embodiment 4,5 the same.
Figure 24 is the formation block diagram of the drive control part 22c that is equipped with among the display device 20c of expression according to present embodiment.As shown in the drawing, the drive control part 22 of drive control part 22c in embodiment 4, also possess revisal data store 31b, lsb decoder 32b, spatial dispersion handling part 33b, the time 34b of dispersion treatment section and revisal pattern storage part 39.By revisal data store 31, lsb decoder 32, spatial dispersion handling part 33 and the time dispersion treatment section 34 be configured for the 1st correcting section of revisal strip brightness disproportionation, be configured for the 2nd correcting section of the mottled brightness disproportionation of revisal by revisal data store 31b, lsb decoder 32b, spatial dispersion handling part 33b, the time 34b of dispersion treatment section and revisal pattern storage part 39.
Addition process section 35 bases are from the revisal data that are used for revisal strip brightness disproportionation of time dispersion treatment section 34 inputs and the revisal data that are used for the mottled brightness disproportionation of revisal of inputting from the time 34b of dispersion treatment section, revisal view data.
As with regard to the pixel of adjusting the revisal pixel selection, the maximum revisal amount of gray-scale value 1 gray scale can be set as with regard to the revisal data that are used for revisal strip brightness disproportionation and the revisal data both sides that are used for the mottled brightness disproportionation of revisal, also 2 gray scales can be set as.For example, in the situation of the adjustment revisal pixel in the zone corresponding with bright strip brightness disproportionation zone and bright mottled brightness disproportionation zone, the gray-scale value of this adjustment revisal pixel 2 gray scales can be reduced, also 1 gray scale can be only reduced.
In the present embodiment, by above-mentioned formation, can become to be difficult to visual recognition to strip brightness disproportionation and mottled brightness disproportionation both sides revisal is brightness disproportionation.
In addition, in the present embodiment, be provided for respectively the handling part (revisal data store 31, lsb decoder 32, spatial dispersion handling part 33 and time dispersion treatment section 34) of revisal strip brightness disproportionation and be used for the handling part (revisal data store 31b, lsb decoder 32b, spatial dispersion handling part 33b, the time 34b of dispersion treatment section and revisal pattern storage part 39) of the mottled brightness disproportionation of revisal.Thus, even if for example in the revisal data compression method that the is used for revisal strip brightness disproportionation situation different with the revisal data compression method that is used for the mottled brightness disproportionation of revisal, also can efficiently carry out the revisal processing based on these two revisal data.
In addition, in the respective embodiments described above, revisal data creating device 10,10b, 10c and display device 20,20b, 20c are equipped with separately, but are not limited to this, also can constitute partly or entirely being provided among display device 20,20b, the 20c revisal data creating device 10,10b, 10c.Also each one except image pickup part 12 among revisal data creating device 10,10b, the 10c can be arranged among display device 20,20b, the 20c revisal data creating device 10,10b, the 10c that arrange in the camera data input and display device 20 that will be obtained by the display frame of image pickup part 12 shooting display panels 21,20b, the 20c.
In addition, in the respective embodiments described above, each one that is equipped with among revisal data creating device 10,10b, 10c or driving control device 22,22b, the 22c (each piece) also can be realized by software with processors such as CPU.At this moment, these each pieces possess the CPU (central processing unit) that carries out the control program command (CP command) that realizes each function, the ROM (read only memory) of storage said procedure, the memory storages (recording medium) such as RAM (random access memory), storage said procedure and various data storage devices of expansion said procedure etc.In addition, purpose of the present invention also can followingly realize, be about to computer-readable recording and realize the software of above-mentioned functions, be that the recording medium of the program code (execute form program, intermediate code program, source program) of the control program of above-mentioned each piece offers revisal data creating device 10,10b, 10c or driving control device 22,22b, 22c, its computing machine (or CPU or MPU) is read and the program code of executive logging in recording medium.
As above-mentioned recording medium, such as using the band classes such as tape or cartridge tape, comprising the semiconductor memory class such as the card class such as dish class, IC-card (comprising storage card)/light-card of the CDs such as the disk such as soft (registered trademark) dish/hard disk or CD-ROM/MO/MD/DVD/CD-R or mask ROM/EPROM/EEPROM/ flash ROM or the logical circuit classes such as PLD (Programmable logic device) or FPGA (Field Programmable Gate Array) etc.
In addition, revisal data creating device 10,10b, 10c or driving control device 22,22b, 22c also can consist of with communication network with being connected, provide the said procedure code through communication network.As this communication network, without particular limitation of, such as utilizing the Internet, in-house network, extranets, LAN, ISDN, VAN, CATV communication network, Virtual Private Network (virtual private network), telephone wire road network, mobile communicating net, satellite communication link etc.In addition, as the transmission medium that consists of communication network, without particular limitation of, for example both can IEEE1394, USB, electric wire is propagated, wired TV circuit, telephone wire, ADSL (Asymetric Digital Subscriber Line) circuits etc. are wired, also can IrDA or the infrared ray such as remote control, Bluetooth (registered trademark), IEEE802.11 is wireless, HDR (High Data Rate), NFC (Near Field Communication), DLNA (Digital Living Network Alliance), the portable phone net, satellite circuit, the wireless utilizations such as ground wave digital network.The present invention can also realize the said procedure code with the form electric transmission specific implementation, that imbed the computer data signal in the standing wave.
In addition, each piece of revisal data creating device 10,10b, 10c or driving control device 22,22b, 22c is not limited to realize with software, also can be consisted of by hardware logic blocks, also can make the operating part hardware of processing and the arithmetic unit combination of carrying out the software that carries out this hardware controls or all the other processing.
In addition, in the respective embodiments described above, the situation that the present invention is applicable to liquid crystal indicator is described, but applicable object of the present invention is not limited to this, such as also applicable to display device such as plasma scope, OLED display.
In addition, the present invention also can followingly show.
That is, display device of the present invention also can also comprise the revisal information corresponding to revisal content above-mentioned grouping information, that represent each grouping in above-mentioned revisal data.
Particularly, display device of the present invention also can possess for the display frame that shows corresponding to the image of display image data; The drive control part of show state with each pixel of the above-mentioned display frame of control, wherein, for when demonstration in the above-mentioned display frame is used the image of view data corresponding to inspection, the display brightness value from be at least a portion brightness disproportionation zone in the brightness disproportionation zone corresponding to above-mentioned inspection with the zone of the different image of the reasonable brightness value of view data, the revisal data that use is made of view data according to above-mentioned inspection, poor with corresponding to the reasonable brightness value of this display image data of brightness value when reducing to show the image corresponding to above-mentioned display image data, above-mentioned revisal data are used for the data that the above-mentioned display image data of revisal is the pixel that comprises in the revisal zone corresponding to the zone in above-mentioned at least a portion brightness disproportionation zone or the zone that comprises this brightness disproportionation zone and its outer peripheral areas, possesses the view data correcting section, when making image corresponding to above-mentioned display image data be shown in the above-mentioned display frame, the above-mentioned display image data of revisal, so that the gray-value variation of at least a portion pixel in the pixel that comprises in the above-mentioned revisal zone, the deviate and grouping information and the revisal information that comprise the brightness disproportionation amount in the above-mentioned revisal data, the deviate of this brightness disproportionation amount be each pixel when being shown in the above-mentioned display frame corresponding to above-mentioned inspection with the image of view data brightness value or with each pixel by a plurality of pixels each brightness value that is divided into each pixel group with corresponding to poor with the reasonable brightness value of this each pixel of view data or this each pixel group of above-mentioned inspection, this grouping information is the degree according to the brightness disproportionation in each brightness disproportionation zone, will be corresponding to the information of the revisal group areas in each brightness disproportionation zone, this revisal information is corresponding to this grouping information, the information that represents the revisal content of each grouping, above-mentioned view data correcting section is according to the group result to this each revisal zone, determine to make in above-mentioned each revisal zone the pixel of gray-value variation, the show state of above-mentioned each pixel of above-mentioned drive control part control is to show corresponding to the image by the display image data after the revisal of above-mentioned view data correcting section.
According to above-mentioned formation, the view data correcting section is for when demonstration in the display frame is used the image of view data corresponding to inspection, the display brightness value from be at least a portion brightness disproportionation zone in the brightness disproportionation zone corresponding to this inspection with the zone of the different image of the reasonable brightness value of view data, according to the revisal data of above-mentioned inspection with the view data making, poor with corresponding to the reasonable brightness value of this display image data of brightness value when reducing to show the image corresponding to display image data, above-mentioned revisal data are used for the data that the revisal display image data is the pixel that comprises in the revisal zone corresponding to the zone in above-mentioned at least a portion brightness disproportionation zone or the zone that comprises this brightness disproportionation zone and its outer peripheral areas, when making image corresponding to display image data be shown in the above-mentioned display frame, according to the revisal data, the revisal display image data is so that the gray-value variation of at least a portion pixel in the pixel that comprises in the revisal zone.In addition, the deviate and grouping information and the revisal information that comprise the brightness disproportionation amount in the above-mentioned revisal data, the deviate of this brightness disproportionation amount be each pixel when being shown in the above-mentioned display frame corresponding to above-mentioned inspection with the image of view data brightness value or with each pixel by a plurality of pixels each brightness value that is divided into each pixel group with corresponding to poor with the reasonable brightness value of this each pixel of view data or this each pixel group of above-mentioned inspection, this grouping information is the degree according to the brightness disproportionation in each brightness disproportionation zone, will be corresponding to the information of the revisal group areas in each brightness disproportionation zone, this revisal information is corresponding to this grouping information, the information that represents the revisal content of each grouping, the view data correcting section determines to make in above-mentioned each revisal zone the pixel of gray-value variation according to the group result to this each revisal zone.
Like this, by the revisal zone of dividing into groups according to the deviate of brightness disproportionation amount, decide the pixel of revisal gray-scale value corresponding to group result, the situation of the pixel of each revisal zone revisal gray-scale value is compared corresponding to the brightness disproportionation amount in each revisal zone with not dividing into groups to come computing, can be cut down the data volume of revisal data.And, in the revisal data, except grouping information, also comprise the revisal information corresponding to revisal content this grouping information, that represent each grouping.Therefore, by now wait in advance regulation revisal information such as the bit table by ［ 0 ］, ［ 1 ］, compare with the situation of each revisal zone being set respectively the content of revisal gray-scale value, can further cut down the data volume of revisal data.Therefore, for example can reduce the memory capacity when making the revisal data be stored in the regulation storage part, can use the few nonvolatile memory of memory capacity to be used as this storage part.
In addition, for example comprise in revisal information in the situation of the information that represents whether revisal, if not revisal then needn't represent other information of revisal content, the result can diminish the data volume of whole revisal data.That is, by above-mentioned formation, reach the effect of the data volume that can cut down the revisal data.
In addition, the brightness disproportionation amount differs widely in each display frame, but by dividing into groups according to the deviate of brightness disproportionation amount, even if the brightness disproportionation amount is different in each display frame, also can be corresponding to divide into groups each revisal zone in each display frame of the brightness disproportionation amount of each display frame.Therefore, can be according to the brightness disproportionation degree of each display frame, the local brightness disproportionation that occurs in the rationally revisal display frame.
In addition, display device of the present invention also can also comprise the coordinate information of the coordinate of the above-mentioned basic revisal pattern of expression configuration in above-mentioned revisal data.
Particularly, display device of the present invention also can possess for the display frame that shows corresponding to the image of display image data; The drive control part of show state with each pixel of the above-mentioned display frame of control, wherein, for when demonstration in the above-mentioned display frame is used the image of view data corresponding to inspection, the display brightness value from be at least a portion brightness disproportionation zone in the brightness disproportionation zone corresponding to above-mentioned inspection with the zone of the different image of the reasonable brightness value of view data, the revisal data that use is made of view data according to above-mentioned inspection, poor with corresponding to the reasonable brightness value of this display image data of brightness value when reducing to show the image corresponding to above-mentioned display image data, above-mentioned revisal data are used for the data that the above-mentioned display image data of revisal is the pixel that comprises in the revisal zone corresponding to the zone in above-mentioned at least part of brightness disproportionation zone or the zone that comprises this brightness disproportionation zone and its outer peripheral areas, possesses the view data correcting section, when making image corresponding to above-mentioned display image data be shown in the above-mentioned display frame, the above-mentioned display image data of revisal, so that the gray-value variation of at least a portion pixel in the pixel that comprises in the above-mentioned revisal zone, comprise basic revisal pattern-information in the above-mentioned revisal data, expression has been scheduled to make one or more basic revisal patterns of the gray-value variation of which pixel in the pixel that comprises in the zone of given size; With the coordinate information of the coordinate that represents the above-mentioned basic revisal pattern of configuration, above-mentioned view data correcting section is by making above-mentioned basic revisal pattern combination with one another decide the pixel that makes gray-value variation in above-mentioned each revisal zone.
According to above-mentioned formation, by in the revisal data, comprising basic revisal pattern-information, this basic revisal pattern-information has represented to be scheduled to make one or more basic revisal patterns of the gray-value variation of which pixel in the pixel that comprises in the zone of given size, determine to make accordingly the pixel of gray-value variation, with do not come computing corresponding to the brightness disproportionation amount in each revisal zone the situation of the pixel of each revisal zone revisal gray-scale value to be compared with basic revisal pattern, can cut down the data volume of revisal data.In addition, by selecting the basic revisal pattern corresponding to the brightness disproportionation amount deviate in each revisal zone, can come the local brightness disproportionation that occurs in the reasonable revisal display frame corresponding to the brightness disproportionation amount.In addition, in the revisal data, except basic revisal pattern-information, also comprise coordinate information, expression is divided into each the coordinate of the above-mentioned basic revisal pattern of configuration of a plurality of zones, this zone after cutting apart with above-mentioned display frame.Therefore, owing to by display frame being divided into a plurality of zones, can cut down thus the data volume of the revisal data of specific its coordinate, so can further cut down the data volume of revisal data.
In addition, display device of the present invention also can be above-mentioned basic revisal pattern set the pixel count that makes the pixel of gray-value variation corresponding to the deviate of brightness disproportionation amount, the deviate of this brightness disproportionation amount be each pixel when being shown in the above-mentioned display frame corresponding to above-mentioned inspection with the image of view data brightness value or with each pixel by a plurality of pixels poor with corresponding to the reasonable brightness value of this each pixel of above-mentioned inspection usefulness view data or this each pixel group of each brightness value that is divided into each pixel group.
According to above-mentioned formation, make the basic revisal pattern of the pixel count of gray-value variation by the deviate with set basis brightness disproportionation amount, even if the brightness disproportionation amount is different in each display frame, also can come each revisal in each display frame of reasonable revisal regional corresponding to the brightness disproportionation degree of each display frame.
In addition, display device of the present invention also afore mentioned rules be of a size of 4 pixels * 4 pixels.
According to above-mentioned formation, owing to can between 1 pixel-～6 pixel, set the pixel of revisal gray-scale value in the pixel that comprises in the basic revisal pattern, so can be in appearance come the revisal revisal regional with 1/16 middle gray of 1 gray scale.Therefore, but precision revisal brightness disproportionation very well.
In addition, display device of the present invention also can constitute the basic revisal pattern storage part that possesses the multiple above-mentioned basic revisal pattern of storage, in above-mentioned revisal data, as above-mentioned basic revisal pattern-information, comprise expression and use the basic revisal pattern identification information of which basic revisal pattern in the basic revisal pattern of storing in the above-mentioned basic revisal pattern storage part, above-mentioned view data correcting section is read the basic revisal pattern corresponding to above-mentioned basic revisal pattern identification information from above-mentioned basic revisal pattern storage part.
According to above-mentioned formation, compare with the formation that the view data correcting section is calculated basic revisal pattern by computing, but the formation of simplified image data correcting section.
In addition, display device of the present invention also can constitute possesses revisal pattern storage part, store the revisal pattern of the above-mentioned basic revisal pattern of multiple expression combined method each other, comprise the revisal pattern-information that each expression of above-mentioned revisal zone is used which revisal pattern in the revisal pattern of storing in the above-mentioned revisal pattern storage part in the above-mentioned revisal data, above-mentioned view data correcting section is read each the revisal zone that comprises in the above-mentioned revisal data from above-mentioned revisal pattern storage part, revisal pattern corresponding to above-mentioned revisal pattern-information, by making above-mentioned basic revisal pattern combination with one another according to the revisal pattern of reading, determine to make in each revisal zone the pixel of gray-value variation.
According to above-mentioned formation, do not use the revisal pattern with the view data correcting section and the formation of the combination of the basic revisal pattern of each revisal region-operation is compared, but the formation of simplified image data correcting section.
In addition, display device of the present invention also can constitute the different a plurality of above-mentioned basic revisal pattern of pixel count that above-mentioned basic revisal pattern-information represents to make gray-value variation, above-mentioned view data correcting section makes each basic revisal combinations of patterns, to use the many basic revisal patterns of pixel count that more make gray-value variation the closer to the central part in above-mentioned revisal zone.
Usually, the brightness disproportionation amount of its central part of brightness disproportionation is maximum, and decentering is far away, and the brightness disproportionation amount is less.Therefore, according to above-mentioned formation, because the large position of brightness disproportionation amount in the revisal zone, more can increase the revisal amount of gray-scale value, so revisal brightness disproportionation more reasonably.
In addition, whether display device of the present invention also can above-mentioned revisal information comprises expression carries out the revisal of revisal and wants no information and revisal half-tone information, and it is to improve the revisal of gray-scale value of this at least a portion pixel or the revisal of reduction that the revisal half-tone information represents the pixel group that carries out revisal.
According to above-mentioned formation, comprise revisal in the revisal information and want no information and revisal half-tone information.Therefore, mix with the pixel group that does not carry out revisal in the situation about existing at the pixel group that carries out revisal, do not need the revisal half-tone information to the pixel group that does not carry out revisal, the result can further cut down the data volume of revisal data.Therefore, can reduce the memory capacity of revisal data store, can use the few nonvolatile memory of memory capacity to be used as the revisal data store.
In addition, when the revisal that display device of the present invention also can be worked as the revisal of the gray-scale value that improves pixel or reduction is carried out in the pixel group of adjacency continuously, above-mentioned revisal half-tone information only offers the pixel group that carries out at first revisal in the pixel group of above-mentioned adjacency, and other pixel groups carry out revisal with reference to this revisal half-tone information.
According to above-mentioned formation, above-mentioned revisal half-tone information only offers the pixel group that carries out at first revisal in the pixel group of above-mentioned adjacency, to carry out other pixel groups of revisal with reference to this revisal half-tone information, needn't provide above-mentioned revisal half-tone information.
Therefore, can further cut down the data volume of revisal data, can reduce the memory capacity of revisal data store, can use the few nonvolatile memory of memory capacity to be used as the revisal data store.
In addition, display device of the present invention also can be worked as the pixel group consecutive hours that does not carry out revisal, offers to comprise continuously several information of pixel group that expression do not carry out revisal in the above-mentioned revisal information of the initial pixel group that does not carry out revisal.
According to above-mentioned formation, in the above-mentioned revisal information that offers the initial pixel group that does not carry out revisal, comprise the continuous several information of pixel group that revisal is not carried out in expression.That is, needn't to its pixel group of continuing provide expression do not carry out revisal without revisal information.
Therefore, can further cut down the data volume of revisal data, can reduce the memory capacity of revisal data store, can use the few nonvolatile memory of memory capacity to be used as the revisal data store.
In addition, in the situation more than above-mentioned formation is especially continuous without the pixel group of revisal in display frame, consist of very effective data-reduction method.
In addition, display device of the present invention also can be divided into a plurality of zones with above-mentioned display frame, and each provides above-mentioned coordinate information to this zone of cutting apart.
In the above-described configuration, in the revisal data, except above-mentioned basic revisal pattern-information, also comprise coordinate information, expression is divided into each the coordinate of the above-mentioned basic revisal pattern of configuration of a plurality of zones, this zone after cutting apart with above-mentioned display frame.Therefore, the memory capacity when being stored in the revisal data in the regulation storage part is reduced, can use the few nonvolatile memory of memory capacity to be used as this storage part.
In addition, brightness disproportionation correction method of the present invention also can also comprise the revisal information corresponding to revisal content above-mentioned grouping information, that represent each grouping in above-mentioned revisal data.
Particularly, brightness disproportionation correction method of the present invention is the brightness disproportionation correction method of the display frame brightness disproportionation in a kind of revisal display device also, above-mentioned display device possesses for the above-mentioned display frame that shows corresponding to the image of display image data, wherein, comprise revisal data storage operation, for when demonstration in the above-mentioned display frame is used the image of view data corresponding to inspection, the display brightness value from be at least a portion brightness disproportionation zone in the brightness disproportionation zone corresponding to above-mentioned inspection with the zone of the different image of the reasonable brightness value of view data, the revisal data that storage is made of view data according to above-mentioned inspection, poor with corresponding to the reasonable brightness value of this display image data of brightness value when reducing to show the image corresponding to above-mentioned display image data, above-mentioned revisal data are used for the data that the above-mentioned display image data of revisal is the pixel that comprises in the revisal zone corresponding to the zone in above-mentioned at least a portion brightness disproportionation zone or the zone that comprises this brightness disproportionation zone and its outer peripheral areas; View data revisal operation, when making image corresponding to above-mentioned display image data be shown in the above-mentioned display frame, according to the above-mentioned display image data of above-mentioned revisal data revisal, so that the gray-value variation of at least part of pixel in the pixel that comprises in the above-mentioned revisal zone; Control operation with driving, the show state of above-mentioned each pixel of control, to show corresponding to the image by the display image data after the revisal of above-mentioned view data revisal operation, the deviate and grouping information and the revisal information that comprise the brightness disproportionation amount in the above-mentioned revisal data, the deviate of this brightness disproportionation amount be each pixel when being shown in the above-mentioned display frame corresponding to above-mentioned inspection with the image of view data brightness value or with each pixel by a plurality of pixels each brightness value that is divided into each pixel group with corresponding to poor with the reasonable brightness value of this each pixel of view data or this each pixel group of above-mentioned inspection, this grouping information is the degree according to the brightness disproportionation in each brightness disproportionation zone, will be corresponding to the information of the revisal group areas in each brightness disproportionation zone, this revisal information is corresponding to this grouping information, the information that represents the revisal content of each grouping, in the above-mentioned view data revisal operation, according to the group result to this each revisal zone, determine to make in above-mentioned each revisal zone the pixel of gray-value variation.
According to said method, by the revisal zone of dividing into groups according to the deviate of brightness disproportionation amount, decide the pixel of revisal gray-scale value corresponding to group result, with the brightness disproportionation amount of not dividing into groups to set corresponding to each revisal zone the situation of the pixel of each revisal zone revisal gray-scale value is compared, can be cut down the data volume of revisal data.Therefore, for example can reduce the memory capacity when making the revisal data be stored in the regulation storage part, can use the few nonvolatile memory of memory capacity to be used as this storage part.
In addition, the brightness disproportionation amount differs widely in each display frame, but by dividing into groups according to the deviate of brightness disproportionation amount, even if the brightness disproportionation amount is different in each display frame, also can be according to divide into groups each revisal zone in each display frame of the brightness disproportionation amount of each display frame.Therefore, can be according to the brightness disproportionation degree of each display frame, the local brightness disproportionation that occurs in the rationally revisal display frame.
In addition, brightness disproportionation correction method of the present invention also can also comprise coordinate information in above-mentioned revisal data, and expression is divided into a plurality of zones with above-mentioned display frame, coordinate each zone after this is cut apart, the above-mentioned basic revisal pattern of configuration.
Particularly, brightness disproportionation correction method of the present invention is the brightness disproportionation correction method of the display frame brightness disproportionation in a kind of revisal display device also, above-mentioned display device possesses for the above-mentioned display frame that shows corresponding to the image of display image data, wherein, comprise revisal data storage operation, for when demonstration in the above-mentioned display frame is used the image of view data corresponding to inspection, the display brightness value from be at least a portion brightness disproportionation zone in the brightness disproportionation zone corresponding to above-mentioned inspection with the zone of the different image of the reasonable brightness value of view data, the revisal data that storage is made of view data according to above-mentioned inspection, poor with corresponding to the reasonable brightness value of this display image data of brightness value when reducing to show the image corresponding to above-mentioned display image data, above-mentioned revisal data are used for the data that the above-mentioned display image data of revisal is the pixel that comprises in the revisal zone corresponding to the zone in above-mentioned at least a portion brightness disproportionation zone or the zone that comprises this brightness disproportionation zone and its outer peripheral areas; View data revisal operation, when making image corresponding to above-mentioned display image data be shown in the above-mentioned display frame, according to the revisal data of storing in the above-mentioned revisal data storage operation, the above-mentioned display image data of revisal is so that the gray-value variation of at least a portion pixel in the pixel that comprises in the above-mentioned revisal zone; Control operation with driving, the show state of above-mentioned each pixel of control, to show corresponding to the image by the display image data after the revisal of above-mentioned view data revisal operation, comprise basic revisal pattern-information in the above-mentioned revisal data, be used for specific one or more basic revisal patterns of being scheduled to make the gray-value variation of which pixel of pixel that comprises in the zone of given size; And coordinate information, expression is divided into above-mentioned display frame on the coordinate of the above-mentioned basic revisal pattern of configuration in a plurality of zones, this each zone after cutting apart, in above-mentioned view data revisal operation, decide the pixel that makes gray-value variation in above-mentioned each revisal zone by making by the specific above-mentioned basic revisal pattern combination with one another of above-mentioned basic revisal pattern-information.
According to said method, by in the revisal data, comprising basic revisal pattern-information, this basic revisal pattern-information has represented to be scheduled to make one or more basic revisal patterns of the gray-value variation of which pixel in the pixel that comprises in the zone of given size, determine to make accordingly the pixel of gray-value variation, with do not come computing corresponding to the brightness disproportionation amount in each revisal zone the situation of the pixel of each revisal zone revisal gray-scale value to be compared with basic revisal pattern, can cut down the data volume of revisal data.In addition, by selecting the basic revisal pattern corresponding to the brightness disproportionation amount deviate in each revisal zone, can come the local brightness disproportionation that occurs in the reasonable revisal display frame according to the brightness disproportionation amount.
In addition, revisal data creating device of the present invention also can be made the above-mentioned revisal data in the above-mentioned display device, wherein, possesses the brightness disproportionation test section, calculate with show corresponding to check with the above-mentioned display frame of the state of the image of view data make a video recording each pixel in the camera data that obtains brightness value or with each pixel by a plurality of pixels poor with corresponding to the reasonable brightness value of above-mentioned inspection usefulness view data of each brightness value that is divided into each pixel group, the zone that detection is made of for the set more than or equal to the pixel of predetermined threshold or pixel group the above-mentioned extent of calculating is as the brightness disproportionation zone; With revisal data generating unit, for at least a portion brightness disproportionation zone in the above-mentioned brightness disproportionation zone, according to above-mentioned inspection view data, make the revisal data, poor with corresponding to the reasonable brightness value of this display image data of brightness value when reducing to show the image corresponding to above-mentioned display image data, above-mentioned revisal data are used for the data that the above-mentioned display image data of revisal is the pixel that comprises in the revisal zone corresponding to the zone in above-mentioned at least a portion brightness disproportionation zone or the zone that comprises this brightness disproportionation zone and its outer peripheral areas, above-mentioned revisal data generating unit comprises deviate and the grouping information of brightness disproportionation amount in above-mentioned revisal data, the deviate of this brightness disproportionation amount be each pixel when being shown in the above-mentioned display frame corresponding to above-mentioned inspection with the image of view data brightness value or with each pixel by a plurality of pixels each brightness value that is divided into each pixel group with corresponding to poor with the reasonable brightness value of this each pixel of view data or this each pixel group of above-mentioned inspection, this grouping information is the degree according to the brightness disproportionation in each brightness disproportionation zone, will be corresponding to the revisal group areas in each brightness disproportionation zone.
In addition, revisal data making method of the present invention also can be made the above-mentioned revisal data in the above-mentioned display device, wherein, comprises and makes corresponding to checking that image with view data is shown in the operation in the above-mentioned display frame; Obtain the operation of camera data with showing to make a video recording with the above-mentioned display frame of the state of the image of view data corresponding to above-mentioned inspection; Brightness disproportionation detects operation, calculate each pixel in the above-mentioned camera data brightness value or with each pixel by a plurality of pixels each brightness value that is divided into each pixel group with corresponding to poor with the reasonable brightness value of view data of above-mentioned inspection, the zone that detection is made of for the set more than or equal to the pixel of predetermined threshold or pixel group the above-mentioned extent of calculating is as the brightness disproportionation zone; Generate operation with the revisal data, for at least a portion brightness disproportionation zone in the above-mentioned brightness disproportionation zone, according to above-mentioned inspection view data, make the revisal data, poor with corresponding to the reasonable brightness value of this display image data of brightness value when reducing to show the image corresponding to above-mentioned display image data, above-mentioned revisal data are used for the data that the above-mentioned display image data of revisal is the pixel that comprises in the revisal zone corresponding to the zone in above-mentioned at least part of brightness disproportionation zone or the zone that comprises this brightness disproportionation zone and its outer peripheral areas, above-mentioned revisal data generate in the operation, the deviate and the grouping information that in above-mentioned revisal data, comprise the brightness disproportionation amount, the deviate of this brightness disproportionation amount be each pixel when being shown in the above-mentioned display frame corresponding to above-mentioned inspection with the image of view data brightness value or with each pixel by a plurality of pixels each brightness value that is divided into each pixel group with corresponding to poor with the reasonable brightness value of this each pixel of view data or this each pixel group of above-mentioned inspection, this grouping information is the degree according to the brightness disproportionation in each brightness disproportionation zone, will be corresponding to the revisal group areas in each brightness disproportionation zone.
According to above-mentioned revisal data creating device and revisal data making method, owing to can make the revisal data that comprise grouping information, can come reasonable revisal brightness disproportionation with above-mentioned revisal data in the display device.In addition, compare with the situation of using the revisal data that do not comprise grouping information, owing to needn't in the revisal data, comprise after each revisal zone being considered the brightness disproportionation amount in each revisal zone for display device, setting the condition of the pixel of revisal gray-scale value, so can reduce the data size of revisal data.Therefore, the memory capacity when being stored in the revisal data in the regulation storage part is reduced, can use the few nonvolatile memory of memory capacity to be used as this storage part.
In addition, revisal data creating device of the present invention also can be made the above-mentioned revisal data in the above-mentioned display device, wherein, possesses the brightness disproportionation test section, calculate with show corresponding to check with the above-mentioned display frame of the state of the image of view data make a video recording each pixel in the camera data that obtains brightness value or with each pixel by a plurality of pixels poor with corresponding to the reasonable brightness value of above-mentioned inspection usefulness view data of each brightness value that is divided into each pixel group, the zone that detection is made of for the set more than or equal to the pixel of predetermined threshold or pixel group the above-mentioned extent of calculating is as the brightness disproportionation zone; With revisal data generating unit, for at least a portion brightness disproportionation zone in the above-mentioned brightness disproportionation zone, according to above-mentioned inspection view data, make the revisal data, poor with corresponding to the reasonable brightness value of this display image data of brightness value when reducing to show the image corresponding to above-mentioned display image data, above-mentioned revisal data are used for the data that the above-mentioned display image data of revisal is the pixel that comprises in the revisal zone corresponding to the zone in above-mentioned at least part of brightness disproportionation zone or the zone that comprises this brightness disproportionation zone and its outer peripheral areas, above-mentioned revisal data generating unit comprises basic revisal pattern-information in above-mentioned revisal data, be used for specific one or more basic revisal patterns of being scheduled to make the gray-value variation of which pixel of pixel that comprises in the zone of given size.
In addition, revisal data making method of the present invention also can be made the above-mentioned revisal data in the above-mentioned display device, wherein, comprises and makes corresponding to checking that image with view data is shown in the operation in the above-mentioned display frame; Obtain the operation of camera data with showing to make a video recording with the above-mentioned display frame of the state of the image of view data corresponding to above-mentioned inspection; Brightness disproportionation detects operation, calculate each pixel in the above-mentioned camera data brightness value or with each pixel by a plurality of pixels each brightness value that is divided into each pixel group with corresponding to poor with the reasonable brightness value of view data of above-mentioned inspection, the zone that detection is made of for the set more than or equal to the pixel of predetermined threshold or pixel group the above-mentioned extent of calculating is as the brightness disproportionation zone; Generate operation with the revisal data, for at least a portion brightness disproportionation zone in the above-mentioned brightness disproportionation zone, according to above-mentioned inspection view data, make the revisal data, poor with corresponding to the reasonable brightness value of this display image data of brightness value when reducing to show the image corresponding to above-mentioned display image data, above-mentioned revisal data are used for the data that the above-mentioned display image data of revisal is the pixel that comprises in the revisal zone corresponding to the zone in above-mentioned at least a portion brightness disproportionation zone or the zone that comprises this brightness disproportionation zone and its outer peripheral areas, above-mentioned revisal data generate in the operation, in above-mentioned revisal data, comprise basic revisal pattern-information, be used for specific one or more basic revisal patterns of being scheduled to make the gray-value variation of which pixel of pixel that comprises in the zone of given size.
According to above-mentioned revisal data creating device and revisal data making method, owing to can make the revisal data that comprise basic revisal pattern-information, this basic revisal pattern-information is used for specific one or more basic revisal patterns of being scheduled to make the gray-value variation of which pixel of pixel that comprises in the zone of given size, so can use basic revisal pattern, in display device, come reasonable revisal brightness disproportionation with above-mentioned revisal data.In addition, by using basic revisal pattern, because needn't in the revisal data, comprise after each revisal zone being considered the brightness disproportionation amount in each revisal zone for display device, the condition of the pixel of computing revisal gray-scale value, so can reduce the data size of revisal data.Therefore, the memory capacity when being stored in the revisal data in the regulation storage part is reduced, can use the few nonvolatile memory of memory capacity to be used as this storage part.
In addition, revisal data creating device of the present invention also can be made the above-mentioned revisal data in the above-mentioned display device, wherein, possesses the brightness disproportionation test section, calculate with show corresponding to check with the above-mentioned display frame of the state of the image of view data make a video recording each pixel in the camera data that obtains brightness value or with each pixel by a plurality of pixels poor with corresponding to the reasonable brightness value of above-mentioned inspection usefulness view data of each brightness value that is divided into each pixel group, the zone that detection is made of for the set more than or equal to the pixel of predetermined threshold or pixel group the above-mentioned extent of calculating is as the brightness disproportionation zone; With revisal data generating unit, for at least a portion brightness disproportionation zone in the above-mentioned brightness disproportionation zone, according to above-mentioned inspection view data, make the revisal data, poor with corresponding to the reasonable brightness value of this display image data of brightness value when reducing to show the image corresponding to above-mentioned display image data, above-mentioned revisal data are used for the data that the above-mentioned display image data of revisal is the pixel that comprises in the revisal zone corresponding to the zone in above-mentioned at least part of brightness disproportionation zone or the zone that comprises this brightness disproportionation zone and its outer peripheral areas, above-mentioned revisal data generating unit comprises deviate and grouping information and the revisal information of brightness disproportionation amount in above-mentioned revisal data, the deviate of this brightness disproportionation amount be each pixel when being shown in the above-mentioned display frame corresponding to above-mentioned inspection with the image of view data brightness value or with each pixel by a plurality of pixels each brightness value that is divided into each pixel group with corresponding to poor with the reasonable brightness value of this each pixel of view data or this each pixel group of above-mentioned inspection, this grouping information is the degree according to the brightness disproportionation in each brightness disproportionation zone, will be corresponding to the information of the revisal group areas in each brightness disproportionation zone, this revisal information is corresponding to this grouping information, the information that represents the revisal content of each grouping.
In addition, revisal data making method of the present invention also can be made the above-mentioned revisal data in the above-mentioned display device, wherein, comprises and makes corresponding to checking that image with view data is shown in the operation in the above-mentioned display frame; Obtain the operation of camera data with showing to make a video recording with the above-mentioned display frame of the state of the image of view data corresponding to above-mentioned inspection; Brightness disproportionation detects operation, calculate each pixel in the above-mentioned camera data brightness value or with each pixel by a plurality of pixels each brightness value that is divided into each pixel group with corresponding to poor with the reasonable brightness value of view data of above-mentioned inspection, the zone that detection is made of for the set more than or equal to the pixel of predetermined threshold or pixel group the above-mentioned extent of calculating is as the brightness disproportionation zone; Generate operation with the revisal data, for at least a portion brightness disproportionation zone in the above-mentioned brightness disproportionation zone, according to above-mentioned inspection view data, make the revisal data, poor with corresponding to the reasonable brightness value of this display image data of brightness value when reducing to show the image corresponding to above-mentioned display image data, above-mentioned revisal data are used for the data that the above-mentioned display image data of revisal is the pixel that comprises in the revisal zone corresponding to the zone in above-mentioned at least part of brightness disproportionation zone or the zone that comprises this brightness disproportionation zone and its outer peripheral areas, above-mentioned revisal data generate in the operation, the deviate and grouping information and the revisal information that in above-mentioned revisal data, comprise the brightness disproportionation amount, the deviate of this brightness disproportionation amount be each pixel when being shown in the above-mentioned display frame corresponding to above-mentioned inspection with the image of view data brightness value or with each pixel by a plurality of pixels each brightness value that is divided into each pixel group with corresponding to poor with the reasonable brightness value of this each pixel of view data or this each pixel group of above-mentioned inspection, this grouping information is the degree according to the brightness disproportionation in each brightness disproportionation zone, will be corresponding to the information of the revisal group areas in each brightness disproportionation zone, this revisal information is corresponding to this grouping information, the information that represents the revisal content of each grouping.
According to above-mentioned revisal data creating device and revisal data making method, owing to can make the revisal data that comprise grouping information, can come reasonable revisal brightness disproportionation with above-mentioned revisal data in the display device.In addition, compare with the situation of using the revisal data that do not comprise grouping information, owing to needn't in the revisal data, comprise after each revisal zone being considered the brightness disproportionation amount in each revisal zone for display device, setting the condition of the pixel of revisal gray-scale value, so can reduce the data size of revisal data.In addition, in the revisal data, except grouping information, also comprise the revisal information corresponding to revisal content this grouping information, that represent each grouping.Therefore, by now wait in advance regulation revisal information such as the bit table by ［ 0 ］, ［ 1 ］, compare with the situation of each revisal zone being set respectively the content of revisal gray-scale value, can further cut down the data volume of revisal data.Therefore, for example can reduce the memory capacity when making the revisal data be stored in the regulation storage part, can use the few nonvolatile memory of memory capacity to be used as this storage part.
In addition, revisal data creating device of the present invention also can be made the above-mentioned revisal data in the above-mentioned display device, wherein, possesses the brightness disproportionation test section, calculate with show corresponding to check with the above-mentioned display frame of the state of the image of view data make a video recording each pixel in the camera data that obtains brightness value or with each pixel by a plurality of pixels poor with corresponding to the reasonable brightness value of above-mentioned inspection usefulness view data of each brightness value that is divided into each pixel group, the zone that detection is made of for the set more than or equal to the pixel of predetermined threshold or pixel group the above-mentioned extent of calculating is as the brightness disproportionation zone; With revisal data generating unit, for at least part of brightness disproportionation zone in the above-mentioned brightness disproportionation zone, according to above-mentioned inspection view data, make the revisal data, poor with corresponding to the reasonable brightness value of this display image data of brightness value when reducing to show the image corresponding to above-mentioned display image data, above-mentioned revisal data are used for the data that the above-mentioned display image data of revisal is the pixel that comprises in the revisal zone corresponding to the zone in above-mentioned at least part of brightness disproportionation zone or the zone that comprises this brightness disproportionation zone and its outer peripheral areas, above-mentioned revisal data generating unit comprises basic revisal pattern-information in above-mentioned revisal data, be used for specific one or more basic revisal patterns of being scheduled to make the gray-value variation of which pixel of pixel that comprises in the zone of given size; Coordinate information with the coordinate that represents the above-mentioned basic revisal pattern of configuration.
In addition, revisal data making method of the present invention also can be made the above-mentioned revisal data in the above-mentioned display device, wherein, comprises and makes corresponding to checking that image with view data is shown in the operation in the above-mentioned display frame; Obtain the operation of camera data with showing to make a video recording with the above-mentioned display frame of the state of the image of view data corresponding to above-mentioned inspection; Brightness disproportionation detects operation, calculate each pixel in the above-mentioned camera data brightness value or with each pixel by a plurality of pixels each brightness value that is divided into each pixel group with corresponding to poor with the reasonable brightness value of view data of above-mentioned inspection, the zone that detection is made of for the set more than or equal to the pixel of predetermined threshold or pixel group the above-mentioned extent of calculating is as the brightness disproportionation zone; Generate operation with the revisal data, for at least a portion brightness disproportionation zone in the above-mentioned brightness disproportionation zone, according to above-mentioned inspection view data, make the revisal data, poor with corresponding to the reasonable brightness value of this display image data of brightness value when reducing to show the image corresponding to above-mentioned display image data, above-mentioned revisal data are used for the data that the above-mentioned display image data of revisal is the pixel that comprises in the revisal zone corresponding to the zone in above-mentioned at least a portion brightness disproportionation zone or the zone that comprises this brightness disproportionation zone and its outer peripheral areas, above-mentioned revisal data generate in the operation, in above-mentioned revisal data, comprise basic revisal pattern-information, be used for specific one or more basic revisal patterns of being scheduled to make the gray-value variation of which pixel of pixel that comprises in the zone of given size; Coordinate information with the coordinate that represents the above-mentioned basic revisal pattern of configuration.
According to above-mentioned revisal data creating device and revisal data making method, owing to can make the revisal data that comprise basic revisal pattern-information, this basic revisal pattern-information is used for specific one or more basic revisal patterns of being scheduled to make the gray-value variation of which pixel of pixel that comprises in the zone of given size, so can use basic revisal pattern, in display device, come reasonable revisal brightness disproportionation with above-mentioned revisal data.In addition, by using basic revisal pattern, because needn't in the revisal data, comprise after each revisal zone being considered the brightness disproportionation amount in each revisal zone for display device, the condition of the pixel of computing revisal gray-scale value, so can reduce the data size of revisal data.In addition, in the revisal data, except basic revisal pattern-information, also comprise coordinate information, expression is divided into each the coordinate of the above-mentioned basic revisal pattern of configuration of a plurality of zones, this zone after cutting apart with above-mentioned display frame.Therefore, the memory capacity when being stored in the revisal data in the regulation storage part is reduced, can use the few nonvolatile memory of memory capacity to be used as this storage part.
In addition, in one of above-mentioned display device, above-mentioned brightness disproportionation correction method, above-mentioned revisal data creating device and above-mentioned revisal data making method, above-mentioned reasonable brightness value is to show corresponding to above-mentioned inspection with the make a video recording moving average of brightness value of the camera data that obtains of the above-mentioned display frame of the state of the image of view data.
In addition, above-mentioned moving average is in order to remove the mild brightness disproportionation such as the brightness disproportionation that causes because of backlight and to extract and easily obtained for the local luminance of inequality is uneven by visual recognition, and expression does not have the brightness of uneven state.
The remarks item
The invention is not restricted to the respective embodiments described above, in the scope shown in the claim, can carry out various changes, even if the embodiment that obtains after the disclosed technological means reasonable combination respectively also is contained in the technical scope of the present invention.
Utilizability on the industry
The present invention is applicable to various display device such as liquid crystal indicator, plasma scope, OLED display and these display device are made the revisal data creating device of revisal data.

Claims (16)

1. a display device possesses for the display frame that shows corresponding to the image of display image data; The drive control part of show state with each pixel of the above-mentioned display frame of control is characterized in that:
For when demonstration in the above-mentioned display frame is used the image of view data corresponding to inspection, the display brightness value from be at least a portion brightness disproportionation zone in the brightness disproportionation zone corresponding to above-mentioned inspection with the zone of the different image of the reasonable brightness value of view data, using according to being used for the above-mentioned display image data of revisal is the revisal data that the above-mentioned inspection of the data of the pixel that comprises in the revisal zone is made of view data corresponding to the zone in above-mentioned at least a portion brightness disproportionation zone or the zone that comprises this brightness disproportionation zone and its outer peripheral areas, so that the brightness value when showing corresponding to the image of above-mentioned display image data reduces with difference corresponding to the reasonable brightness value of this display image data
Possess the view data correcting section, when making image corresponding to above-mentioned display image data be shown in the above-mentioned display frame, the above-mentioned display image data of revisal, so that the gray-value variation of at least a portion pixel in the pixel that comprises in the above-mentioned revisal zone,
Comprise basic revisal pattern-information in the above-mentioned revisal data, this basic revisal pattern-information has represented to be scheduled to make the information of one or more basic revisal patterns of the gray-value variation of which pixel in the pixel that comprises in the zone of given size,
Above-mentioned view data correcting section is by making above-mentioned basic revisal pattern combination with one another decide the pixel that makes gray-value variation in above-mentioned each revisal zone.
2. display device according to claim 1 is characterized in that:
Above-mentioned reasonable brightness value is to show corresponding to above-mentioned inspection with the make a video recording moving average of brightness value of resulting camera data of the above-mentioned display frame of the state of the image of view data.
3. display device according to claim 2 is characterized in that:
The coordinate information that also comprises the coordinate of the above-mentioned basic revisal pattern of expression configuration in the above-mentioned revisal data.
4. described display device one of according to claim 1～3 is characterized in that:
Be set with the pixel count that makes the pixel of gray-value variation according to the deviate of brightness disproportionation amount in the above-mentioned basic revisal pattern, the deviate of this brightness disproportionation amount be make the brightness value of each pixel when being shown in the above-mentioned display frame corresponding to above-mentioned inspection with the image of view data or by a plurality of pixels each brightness value that each pixel segmentation is become each pixel group with corresponding to poor with the reasonable brightness value of this each pixel of view data or this each pixel group of above-mentioned inspection.
5. described display device one of according to claim 1～3 is characterized in that:
The afore mentioned rules size is 4 pixels * 4 pixels.
6. described display device one of according to claim 1～3 is characterized in that:
Possess: basic revisal pattern storage part, store multiple above-mentioned basic revisal pattern,
In above-mentioned revisal data, as above-mentioned basic revisal pattern-information, comprise the basic revisal pattern identification information which basic revisal pattern in the basic revisal pattern of storing in the above-mentioned basic revisal pattern storage part is used in expression,
Above-mentioned view data correcting section is read basic revisal pattern corresponding to above-mentioned basic revisal pattern identification information from above-mentioned basic revisal pattern storage part.
7. described display device one of according to claim 1～3 is characterized in that:
Possess: revisal pattern storage part, store the revisal pattern of the above-mentioned basic revisal pattern of multiple expression combined method each other,
Comprise the revisal pattern-information that uses which revisal pattern in the revisal pattern of storing in the above-mentioned revisal pattern storage part by above-mentioned each revisal region representation in the above-mentioned revisal data,
Above-mentioned view data correcting section from above-mentioned revisal pattern storage part, read to each the revisal zone that comprises in the above-mentioned revisal data, corresponding to the revisal pattern of above-mentioned revisal pattern-information, by making above-mentioned basic revisal pattern combination with one another according to the revisal pattern of reading, determine to make in each revisal zone the pixel of gray-value variation.
8. described display device one of according to claim 1～3 is characterized in that:
Above-mentioned basic revisal pattern-information represents to make the different a plurality of above-mentioned basic revisal pattern of pixel count of gray-value variation,
Above-mentioned view data correcting section makes each basic revisal combinations of patterns, in order to use the many basic revisal patterns of pixel count that more make gray-value variation the closer to the central part in above-mentioned revisal zone.
9. display device according to claim 3 is characterized in that:
Above-mentioned display frame is divided into a plurality of zones, and the zone that this is cut apart by each provides above-mentioned coordinate information.
10. the brightness disproportionation correction method of the display frame brightness disproportionation in the revisal display device, above-mentioned display device possesses for the above-mentioned display frame that shows corresponding to the image of display image data, it is characterized in that, comprises:
Revisal data storage operation, for when demonstration in the above-mentioned display frame is used the image of view data corresponding to inspection, the display brightness value from be at least a portion brightness disproportionation zone in the brightness disproportionation zone corresponding to above-mentioned inspection with the zone of the different image of the reasonable brightness value of view data, storage is the revisal data that the above-mentioned inspection of the data of the pixel that comprises in the revisal zone is made of view data corresponding to the zone in above-mentioned at least a portion brightness disproportionation zone or the zone that comprises this brightness disproportionation zone and its outer peripheral areas according to being used for the above-mentioned display image data of revisal, so that the brightness value when showing corresponding to the image of above-mentioned display image data reduces with difference corresponding to the reasonable brightness value of this display image data;
View data revisal operation, when making image corresponding to above-mentioned display image data be shown in the above-mentioned display frame, the above-mentioned display image data of revisal is so that the gray-value variation of at least a portion pixel in the pixel that comprises in the above-mentioned revisal zone; And
Drive the control operation, the show state of above-mentioned each pixel of control, showing corresponding to the image by the display image data after the revisal of above-mentioned view data revisal operation,
Comprise basic revisal pattern-information in the above-mentioned revisal data, this basic revisal pattern-information has represented to be scheduled to make the information of one or more basic revisal patterns of the gray-value variation of which pixel in the pixel that comprises in the zone of given size,
In above-mentioned view data revisal operation, decide the pixel that makes gray-value variation in above-mentioned each revisal zone by making by the specific above-mentioned basic revisal pattern combination with one another of above-mentioned basic revisal pattern-information.
11. brightness disproportionation correction method according to claim 10 is characterized in that:
Above-mentioned reasonable brightness value is to show corresponding to above-mentioned inspection with the make a video recording moving average of brightness value of resulting camera data of the above-mentioned display frame of the state of the image of view data.
12. according to claim 10 or 11 described brightness disproportionation correction methods, it is characterized in that:
Also comprise coordinate information in the above-mentioned revisal data, this coordinate information represents above-mentioned display frame is divided into each the coordinate of the above-mentioned basic revisal pattern of configuration of a plurality of zones, this zone after cutting apart.
13. a revisal data creating device is made the above-mentioned revisal data in claim 1 or the 2 described display device, it is characterized in that possessing:
The brightness disproportionation test section, calculate with show corresponding to check with the above-mentioned display frame of the state of the image of view data make a video recording each pixel in the resulting camera data brightness value or with each pixel by a plurality of pixels poor with corresponding to the reasonable brightness value of above-mentioned inspection usefulness view data of each brightness value that is divided into each pixel group, the zone that detection is made of for the set more than or equal to the pixel of predetermined threshold or pixel group the above-mentioned extent of calculating is as the brightness disproportionation zone; And
Revisal data generating unit, for the zone of at least a portion brightness disproportionation in above-mentioned brightness disproportionation zone, according to above-mentioned inspection view data, make the revisal data, brightness value when reducing to show the image corresponding to above-mentioned display image data is poor with the reasonable brightness value corresponding to this display image data, above-mentioned revisal data are used for the data that the above-mentioned display image data of revisal is the pixel that comprises in the revisal zone corresponding to the zone in above-mentioned at least a portion brightness disproportionation zone or the zone that comprises this brightness disproportionation zone and its outer peripheral areas
Above-mentioned revisal data generating unit makes above-mentioned revisal data comprise basic revisal pattern-information, and this basic revisal pattern-information is one or more basic revisal patterns of being scheduled to make the gray-value variation of which pixel of pixel that comprises in the zone of given size for specific.
14. a revisal data making method is made the above-mentioned revisal data in claim 1 or the 2 described display device, it is characterized in that, comprises:
Make corresponding to checking that image with view data is shown in the operation in the above-mentioned display frame;
Obtain the operation of camera data with showing to make a video recording with the above-mentioned display frame of the state of the image of view data corresponding to above-mentioned inspection;
Brightness disproportionation detects operation, calculate each pixel in the above-mentioned camera data brightness value or with each pixel by a plurality of pixels each brightness value that is divided into each pixel group with corresponding to poor with the reasonable brightness value of view data of above-mentioned inspection, the zone that detection is made of for the set more than or equal to the pixel of predetermined threshold or pixel group the above-mentioned extent of calculating is as the brightness disproportionation zone; And
The revisal data generate operation, for at least a portion brightness disproportionation zone in above-mentioned brightness disproportionation zone, according to above-mentioned inspection view data, make the revisal data, brightness value when reducing to show the image corresponding to above-mentioned display image data is poor with the reasonable brightness value corresponding to this display image data, above-mentioned revisal data are used for the data that the above-mentioned display image data of revisal is the pixel that comprises in the revisal zone corresponding to the zone in above-mentioned at least a portion brightness disproportionation zone or the zone that comprises this brightness disproportionation zone and its outer peripheral areas
Above-mentioned revisal data generate in the operation, make above-mentioned revisal data comprise basic revisal pattern-information, are used for specific one or more basic revisal patterns of being scheduled to make the gray-value variation of which pixel of pixel that comprises in the zone of given size.
15. a revisal data creating device is made the above-mentioned revisal data in claim 3 or the 9 described display device, it is characterized in that possessing:
The brightness disproportionation test section, calculate with show corresponding to check with the above-mentioned display frame of the state of the image of view data make a video recording each pixel in the resulting camera data brightness value or with each pixel by a plurality of pixels poor with corresponding to the reasonable brightness value of above-mentioned inspection usefulness view data of each brightness value that is divided into each pixel group, the zone that detection is made of for the set more than or equal to the pixel of predetermined threshold or pixel group the above-mentioned extent of calculating is as the brightness disproportionation zone; With
Revisal data generating unit, for at least a portion brightness disproportionation zone in above-mentioned brightness disproportionation zone, according to above-mentioned inspection view data, make the revisal data, brightness value when reducing to show the image corresponding to above-mentioned display image data is poor with the reasonable brightness value corresponding to this display image data, above-mentioned revisal data are used for the data that the above-mentioned display image data of revisal is the pixel that comprises in the revisal zone corresponding to the zone in above-mentioned at least a portion brightness disproportionation zone or the zone that comprises this brightness disproportionation zone and its outer peripheral areas
Above-mentioned revisal data generating unit makes above-mentioned revisal data comprise basic revisal pattern-information, is used for specific one or more basic revisal patterns of being scheduled to make the gray-value variation of which pixel of pixel that comprises in the zone of given size; Coordinate information with the coordinate that represents the above-mentioned basic revisal pattern of configuration.
16. a revisal data making method is made the above-mentioned revisal data in claim 3 or the 9 described display device, it is characterized in that, comprises:
Make corresponding to checking that image with view data is shown in the operation in the above-mentioned display frame;
Obtain the operation of camera data with showing to make a video recording with the above-mentioned display frame of the state of the image of view data corresponding to above-mentioned inspection;
Brightness disproportionation detects operation, calculate each pixel in the above-mentioned camera data brightness value or with each pixel by a plurality of pixels each brightness value that is divided into each pixel group with corresponding to poor with the reasonable brightness value of view data of above-mentioned inspection, the zone that detection is made of for the set more than or equal to the pixel of predetermined threshold or pixel group the above-mentioned extent of calculating is as the brightness disproportionation zone; With
The revisal data generate operation, for at least a portion brightness disproportionation zone in above-mentioned brightness disproportionation zone, according to above-mentioned inspection view data, make the revisal data, brightness value when reducing to show the image corresponding to above-mentioned display image data is poor with the reasonable brightness value corresponding to this display image data, above-mentioned revisal data are used for the data that the above-mentioned display image data of revisal is the pixel that comprises in the revisal zone corresponding to the zone in above-mentioned at least part of brightness disproportionation zone or the zone that comprises this brightness disproportionation zone and its outer peripheral areas
Above-mentioned revisal data generate in the operation, make above-mentioned revisal data comprise basic revisal pattern-information, are used for specific one or more basic revisal patterns of being scheduled to make the gray-value variation of which pixel of pixel that comprises in the zone of given size; Coordinate information with the coordinate that represents the above-mentioned basic revisal pattern of configuration.
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