CN114863882A - Refreshing method and device of electronic ink screen - Google Patents
Refreshing method and device of electronic ink screen Download PDFInfo
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3433—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
- G09G3/344—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices based on particles moving in a fluid or in a gas, e.g. electrophoretic devices
Abstract
The invention discloses a refreshing method and a refreshing device for an electronic ink screen. Wherein, the method comprises the following steps: acquiring brightness parameters of pixel points of the electronic ink screen in a display picture, wherein the brightness parameters comprise a first brightness parameter of the pixel points in a previous frame of the display picture and a second brightness parameter of the pixel points in a current display picture; determining a target pixel point with a preset variation trend in the electronic ink screen according to the first brightness parameter and the second brightness parameter, wherein the preset variation trend is that the target pixel point is changed from dark to bright; and determining whether to control the refreshing of the electronic ink screen or not according to the attribute information of the target pixel point. The invention solves the technical problem that the display effect of the electronic ink screen is poor due to inaccurate actual refreshing of the electronic ink screen in the prior art.
Description
Technical Field
The invention relates to the technical field of display, in particular to a refreshing method and device of an electronic ink screen.
Background
The electronic ink screen is used as an electronic reader display screen, and has the advantages of low power consumption, good display effect, eye protection and the like. The electronic ink screen mainly comprises a fine positively charged white capsule and a negatively charged black capsule, the black and white capsule can be controlled to move through an electric field to realize ink screen display, when an external electric field changes, the black and white capsule moves under the action of the electric field to realize the change of display images on the display screen, for example, when the black capsule moves to the top, the white capsule moves to the bottom, and the current pixel points are black; on the contrary, the pixel points are white, and the gray scale is realized by setting different quantity ratios of black and white capsules. However, when the black-and-white capsule moves under the control of the electric field, there is a phenomenon that a moving potential difference occurs with a certain probability in the process of changing the picture from black to white, that is, the black capsule does not move to a specified position point, which causes the occurrence of an afterimage, when the image "E" is changed to the image "a", the image with the afterimage as shown in fig. 1b appears, and the image "E" does not disappear completely, which causes the afterimage of the image "E" to still exist on the ink screen.
For the problem of residual shadows on the ink screen, the ink screen is refreshed mainly by calling a full-brushing mode through a counting or timing method in the industry at present, namely, when a page is updated to preset times or the page display reaches preset time, the ink screen is actively and fully brushed once to complete the removal of the residual shadows. However, in the method for removing the afterimages, the refresh frequency is mechanically refreshed according to the page update times or the display time, which results in advanced refresh or delayed refresh in actual use, for example, refresh is performed under the condition that the ink screen has no obvious afterimages, or the afterimages have seriously affected the current use but have not been refreshed, and the user experience is poor.
Aiming at the technical problem that the display effect of the electronic ink screen is not good due to inaccurate actual refreshing of the electronic ink screen in the prior art, an effective solution is not provided at present.
Disclosure of Invention
The embodiment of the invention provides a method and a device for refreshing an electronic ink screen, which are used for at least solving the technical problem that the display effect of the electronic ink screen is poor due to inaccurate actual refreshing of the electronic ink screen in the prior art.
According to an aspect of an embodiment of the present invention, there is provided a method for refreshing an electronic ink screen, including: acquiring brightness parameters of pixel points of the electronic ink screen in a display picture, wherein the brightness parameters comprise a first brightness parameter of the pixel points in a previous frame of the display picture and a second brightness parameter of the pixel points in a current display picture; determining a target pixel point with a preset variation trend in the electronic ink screen according to the first brightness parameter and the second brightness parameter, wherein the preset variation trend is that the target pixel point is changed from dark to light; and determining whether to control the refreshing of the electronic ink screen or not according to the attribute information of the target pixel point.
Further, acquiring brightness parameters of pixel points of the electronic ink screen in a display picture, including: acquiring RGB data of pixel points in a display picture; dividing the pixel points into corresponding brightness levels according to the RGB data; and determining the brightness level of the pixel point as the brightness parameter of the pixel point.
Further, determining a target pixel point with a preset variation trend in the electronic ink screen according to the first brightness parameter and the second brightness parameter, including: under the condition that the difference between the second brightness parameter and the first brightness parameter of any pixel point is greater than or equal to a first preset value, determining that the pixel point has a preset variation trend; and determining pixel points with a preset variation trend as target pixel points.
Further, the attribute information of the target pixel point includes: the quantity of the target pixel points, whether the electronic ink screen is controlled to refresh according to the determination of the attribute information of the target pixel points or not, comprises the following steps: under the condition that the number of the target pixel points is larger than or equal to a second preset value, controlling the electronic ink screen to refresh; and under the condition that the number of the target pixel points is smaller than a second preset value, the electronic ink screen is forbidden to refresh.
Further, the attribute information of the target pixel point includes: the pixel area that consecutive target pixel constitutes, whether control electronic ink screen according to the determination of the attribute information of target pixel refreshes, include: under the condition that the pixel area formed by the connected target pixel points is larger than or equal to a third preset value, the electronic ink screen is controlled to be refreshed; and under the condition that the pixel area formed by the connected target pixel points is smaller than a third preset value, the electronic ink screen is forbidden to refresh.
According to another aspect of the embodiments of the present invention, there is also provided a refreshing apparatus of an electronic ink screen, including: the system comprises an acquisition module, a display module and a display module, wherein the acquisition module is used for acquiring the brightness parameters of pixel points in a display picture of the electronic ink screen, and the brightness parameters comprise a first brightness parameter of the pixel points in a previous frame of the display picture and a second brightness parameter of the pixel points in a current display picture; the determining module is used for determining a target pixel point with a preset variation trend in the electronic ink screen according to the first brightness parameter and the second brightness parameter, wherein the preset variation trend is changed from dark to bright; and the refreshing module is used for determining whether to control the electronic ink screen to refresh or not according to the attribute information of the target pixel point.
Further, the attribute information of the target pixel point includes: the quantity of target pixel point, above-mentioned module of refreshing includes: the quantity judgment submodule is used for controlling the electronic ink screen to be refreshed under the condition that the quantity of the target pixel points is greater than or equal to a second preset value; and under the condition that the number of the target pixel points is smaller than a second preset value, the electronic ink screen is forbidden to refresh.
Further, the attribute information of the target pixel point includes: the pixel area that the target pixel that links to each other constitutes, above-mentioned module of refreshing includes: the area judgment submodule is used for controlling the electronic ink screen to be refreshed under the condition that the pixel area formed by the connected target pixel points is larger than or equal to a third preset value; and under the condition that the pixel area formed by the connected target pixel points is smaller than a third preset value, the electronic ink screen is forbidden to refresh.
According to another aspect of the embodiments of the present invention, there is also provided a computer storage medium including: the computer storage medium stores a plurality of instructions adapted to be loaded by the processor and to perform the method steps of any of the above.
According to another aspect of the embodiments of the present invention, there is also provided an electronic reader, including: a processor and a memory; wherein the memory stores a computer program adapted to be loaded by the processor and to perform the method steps of any of the above.
In the embodiment of the invention, a first brightness parameter of a frame of display picture on each pixel point on the electronic ink screen and a second brightness parameter of a current display picture are obtained, the first brightness parameter and the second brightness parameter are compared to obtain a brightness change trend, a target pixel point is screened out according to the brightness change trend, and the electronic ink screen is controlled to refresh when the attribute information of the target pixel point meets a certain condition. Whether the brightness of the corresponding pixel point of the current display page and the previous frame of display page changes from dark to bright or not is used as a refreshing condition, so that the ghost is eliminated more accurately, the user experience is improved, and the technical problem that the display effect of an electronic ink screen is not good due to inaccurate actual refreshing of the electronic ink screen in the prior art is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1a is a schematic illustration of an ink screen display image;
FIG. 1b is a schematic illustration of an ink screen display image with afterimage;
FIG. 2a is a flow chart of an ink screen refresh method according to the prior art;
FIG. 2b is a flow chart of an ink screen refresh method according to the prior art;
FIG. 3 is a flow chart of a method for refreshing an electronic ink screen according to an embodiment of the present invention;
FIG. 4 is a flow chart of a method for refreshing an electronic ink screen according to an embodiment of the present invention;
FIG. 5a is a diagram illustrating that the number of target pixels reaches the refresh condition according to an embodiment of the present invention;
FIG. 5b is a diagram illustrating an area of a target pixel reaching a refresh condition according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a refreshing apparatus for an electronic ink screen according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of an electronic reader in accordance with an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
For the problem of residual shadows on the ink screen, the ink screen is refreshed mainly by calling a full-brushing mode through a counting or timing method in the industry at present. Fig. 2a is a flowchart of an ink screen refreshing method in the prior art, as shown in fig. 2a, in step S201, a counter in a controller is set to a counting mode during an ink screen page display process; step S202, when the page is refreshed (namely the change of the screen image), a counter +1 is set; step S203, judging whether the number of times of refreshing the page reaches a threshold value (namely the set maximum refreshing number of times); if the determination result is yes, the step S204 is entered to invoke the full-brush mode to perform refresh to remove the ghost. FIG. 2b is a flowchart of another ink screen refreshing method in the prior art, as shown in FIG. 2b, in step S205, a timer in a controller is set to a timing mode during the ink screen page display process; step S206, starting timing from the page display; step S207, determining whether the display time of the page reaches a threshold (i.e., a set maximum time); if the judgment result is yes, the step S208 is entered to actively perform a full-brushing on the ink screen for one time, and the removal of the residual shadow is completed. However, in the two methods for removing the afterimages, the refresh frequency is mechanically refreshed according to the page update times or the display time, leading to advanced refresh or delayed refresh in practical use, and the user experience is poor.
The invention provides the following embodiments to at least solve the technical problem that the display effect of an electronic ink screen is poor due to inaccurate actual refreshing of the electronic ink screen in the prior art.
Example 1
In accordance with an embodiment of the present invention, there is provided an embodiment of a method for refreshing an electronic ink screen, where the steps illustrated in the flowchart of the figure may be performed in a computer system, such as a set of computer-executable instructions, and where a logical order is illustrated in the flowchart, in some cases the steps illustrated or described may be performed in an order different than that illustrated herein.
Fig. 3 is a refreshing method of an electronic ink screen according to an embodiment of the present invention, as shown in fig. 3, the method including the steps of:
step S301, obtaining brightness parameters of pixel points of the electronic ink screen in a display picture, wherein the brightness parameters comprise a first brightness parameter of the pixel points in a previous frame of the display picture and a second brightness parameter of the pixel points in a current display picture.
Specifically, the luminance parameter may be RGB data or other data calculated based on the RGB data.
The brightness parameters obtained in the above steps may be brightness parameters of all pixel points in the display picture. For example, for an electronic ink screen with a resolution of 1872 × 1404, each frame of the electronic ink screen includes 1872 × 1404 pixels. The pixel points comprise all pixel points in the electronic ink screen, and each pixel point corresponds to a first brightness parameter in a last frame of display picture and a second brightness parameter in a current display picture.
Step S302, determining a target pixel point with a preset variation trend in the electronic ink screen according to the first brightness parameter and the second brightness parameter, wherein the preset variation trend is that the target pixel point is changed from dark to bright.
The target pixel points are pixel points with residual shadows. After the last frame of display picture of the electronic ink screen is changed into the current picture, the first brightness parameter of each pixel point is changed into the second brightness parameter, and three change states may exist: the first brightness parameter is greater than the second brightness parameter (i.e. bright to dark); the first luminance parameter is equal to the second luminance parameter (i.e. no change); the first luminance parameter is smaller than the second luminance parameter (i.e. brighter by dark). Because the ghost appears in the process that the pixel points turn bright from dark, the black image in the previous frame of picture is still partially displayed in the current display picture due to the moving potential difference of the black capsule, therefore, the pixel points which possibly appear with the ghost can be screened out according to the change trend of turning bright from dark, and in the change of the multi-frame display picture, the ghost appearing at the pixel points is determined when the number of times of turning bright from dark is accumulated to a certain degree, namely the target pixel points.
In an alternative embodiment, in N frames of display images that change continuously, the luminance parameter Z1(x, y) of any pixel point in the first frame of display image and the luminance parameter Z2(x, y) of the pixel point in the second frame of display image are obtained, if Z2(x, y) is greater than Z1(x, y), 1 is added to the weight of the pixel point, and the weight K2 of the current display image is K1+1, where K1 is the weight of the pixel point in the first frame of display image. When the display picture is changed to a third frame, obtaining a brightness parameter Z3(x, y) of the pixel point on the display picture of the third frame, and if Z3(x, y) is greater than Z2(x, y), adding 1 to the weight of the pixel point again, wherein the weight K3 is equal to K1+1+ 1; if Z3(x, y) is less than or equal to Z2(x, y), the weight of the pixel is not changed, and by analogy, each frame of picture is changed, the weight is added by 1 or not changed according to the brightness parameter, and the higher the weight is, the higher the possibility that the pixel has residual shadows is. When the weighted value of the pixel point reaches a threshold value, the current pixel point is determined to be a target pixel point, namely the pixel point has a residual shadow.
And step S303, determining whether to control the electronic ink screen to refresh according to the attribute information of the target pixel point.
Because the single pixel point has the afterimage on the electronic ink screen, the actual user experience cannot be influenced, and the full brushing is required only when the attribute information of the target pixel point meets a certain condition along with the refreshing of each frame of display picture.
The attribute information can be that the number of target pixel points reaches a threshold value, or the area of the target pixel points on the electronic ink screen reaches the threshold value, or the proportion of the target pixel points to the total pixel points reaches the threshold value, and the like.
In this embodiment, a first brightness parameter of a display frame on each pixel point on the electronic ink screen and a second brightness parameter of a current display frame are obtained, the first brightness parameter and the second brightness parameter are compared to obtain a brightness change trend, a target pixel point is screened out according to the brightness change trend, and the electronic ink screen is controlled to refresh when attribute information of the target pixel point meets a certain condition. Whether the brightness of the corresponding pixel point of the current display page and the previous frame of display page changes from dark to bright or not is used as a refreshing condition, so that the ghost is eliminated more accurately, the user experience is improved, and the technical problem that the display effect of an electronic ink screen is not good due to inaccurate actual refreshing of the electronic ink screen in the prior art is solved.
As an alternative embodiment, acquiring the brightness parameter of a pixel point of the electronic ink screen in the display frame includes: acquiring RGB data of pixel points in a display picture; dividing the pixel points into corresponding brightness levels according to the RGB data; and determining the brightness level of the pixel point as the brightness parameter of the pixel point.
Since each pixel is composed of three colors, i.e., R (Red), G (Green), and B (Blue), R, G, B data of each pixel needs to be obtained and converted into RGB brightness levels of the pixel.
In an alternative embodiment, the RGB luminance levels of the pixel points may be converted into YUV luminance levels Y by the following formula:
Wr+Wg+Wb＝1；
luminance level Y ═ 16+219 (Wr × (w × R + Wg × G + Wb × B)/255;
the values of Wr, Wg, and Wb in the above equation may be determined according to any one of three criteria, and the value of the luminance level Y may be calculated by selecting one of the criteria and substituting the selected criterion into the above calculation equation of the luminance level Y.
BT601 standard: 0.587Wb (0.114);
BT709 standard: wr-0.2126 Wg-0.7152 Wb-0.0722;
the BT2020 standard: wr-0.2627 Wg-0.678 Wb-0.0593;
wherein Wr is a coefficient corresponding to R data of a pixel point, Wg is a coefficient corresponding to G data of the pixel point, and Wb is a coefficient corresponding to B data of the pixel point; BT601 is the ITU-R BT601 standard (color video digitization standard) promulgated by the International telecommunication Union, radio communication sector (ITU-R); BT709 is ITU-R BT709 standard (parameter values of the high definition television standard used in programming and international program exchanges) published by the International telecommunication Union, radio communication sector (ITU-R); BT2020 is the ITU-R BT2020 standard (parameter values for ultra high definition television system programming and international exchanges) promulgated by the international telecommunications union radio sector (ITU-R).
The brightness level Y is an RGB brightness level having 256 levels, and the larger the value is, the brighter it is; smaller values indicate darker. In an alternative embodiment, the luminance level Y obtained by the above calculation may be converted into one of 16 gray scale levels by using the conversion relation table of RGB luminance levels and EINK gray scale levels shown in table 1 for 256 RGB luminance levels.
TABLE 1
| Y luminance | EINK-Brightness rating |
| 0～15 | 0 |
| 16～31 | 1 |
| 32～37 | 2 |
| 38～15 | 3 |
| …… | …… |
| 208～223 | 13 |
| 224～239 | 14 |
| 240～255 | 15 |
According to the above steps, the brightness parameter of the pixel point can be determined to be one of 16 gray scale levels. For example, if the brightness level of the pixel on the previous frame of display screen is 12 and the brightness level of the current display screen is 14, it is determined that the brightness variation trend of the pixel is changed from dark to bright.
As an alternative embodiment, determining a target pixel point having a preset variation trend in the electronic ink screen according to the first brightness parameter and the second brightness parameter includes: under the condition that the difference between the second brightness parameter and the first brightness parameter of any pixel point is greater than or equal to a first preset value, determining that the pixel point has a preset variation trend; and determining pixel points with a preset variation trend as target pixel points.
The first preset value can be determined according to the number of times of changing from dark to bright when the afterimage appears on the pixel point, namely, the pixel point appears the afterimage after changing from dark to bright when the pixel point is in the change process of a multi-frame picture.
And when the difference between the second brightness parameter and the first brightness parameter of the pixel is greater than or equal to the first preset value, determining the pixel as a target pixel, namely determining that the pixel has a residual image. For example, the first preset value may be 5, in N frames of display images that continuously change, the luminance level Z1(x, y) of a certain pixel in the first frame of display image is obtained to be 5, and the luminance level Z2(x, y) of the pixel in the second frame of display image is obtained to be 7, when the display image changes to the third frame, the luminance level Z3(x, y) of the pixel in the third frame of display image is obtained to be 10, at this time, when Z3(x, y) subtracts Z1(x, y) to be 5, it is determined that the difference between the luminance parameters of the pixel is greater than the first preset value, and the pixel has a preset change trend of changing from dark to bright and is determined as a target pixel.
As an optional embodiment, the attribute information of the target pixel point includes: the quantity of the target pixel points, whether the electronic ink screen is controlled to be refreshed or not according to the determination of the attribute information of the target pixel points comprises the following steps: under the condition that the number of the target pixel points is larger than or equal to a second preset value, controlling the electronic ink screen to refresh; and under the condition that the number of the target pixel points is smaller than a second preset value, the electronic ink screen is forbidden to refresh.
The second preset value is determined according to the number of the allowed discrete target pixel points, and when the number of the target pixel points of the electronic ink screen reaches the value, more pixel points which show that the ghost image appears on the electronic ink screen affect the experience of a user and need to be refreshed. Fig. 5a is a schematic diagram illustrating the distribution of discrete target pixels on the electronic ink screen, and as shown in fig. 5a, the completely black pixels are target pixels having afterimages and are discretely distributed on the electronic ink screen. With the refreshing of each frame of display image, if the number of discrete target pixel points is more and more, the current display image needs to be refreshed to eliminate the residual image when the number is greater than or equal to the second preset value.
As an optional embodiment, the attribute information of the target pixel point includes: the pixel area that consecutive target pixel constitutes, whether control electronic ink screen according to the determination of the attribute information of target pixel refreshes, include: under the condition that the pixel area formed by the connected target pixel points is larger than or equal to a third preset value, the electronic ink screen is controlled to be refreshed; and under the condition that the pixel area formed by the connected target pixel points is smaller than a third preset value, the electronic ink screen is forbidden to refresh.
The third preset value is determined according to the pixel area surrounded by the allowed connected target pixel points, and when the pixel area formed by the connected target pixel points on the electronic ink screen reaches the value, the image area representing the occurrence of the ghost on the electronic ink screen is large, so that the user experience is influenced, and the refreshing is needed. Fig. 5b is a schematic diagram of pixel areas formed by target pixel points connected on the ink screen, and as shown in fig. 5b, the completely black pixel points are target pixel points where the ghost exists, and the completely black pixel points are connected to enclose a specific area, and when the area of the specific area reaches a third preset value, the current display frame needs to be refreshed to eliminate the ghost.
It should be noted that, as long as one of the conditions is satisfied, the refresh of the electronic ink screen can be controlled by using the number of the target pixel points as the full-brush judgment condition and using the pixel area formed by the connected target pixel points as the full-brush judgment condition.
Fig. 4 is a flowchart of a refreshing method of an electronic ink screen according to an embodiment of the present invention, as shown in fig. 4, the method includes the following steps:
in step S401, a frame page is obtained.
Step S402, extracting pixel points from the page.
Step S403, extracting the brightness information of each pixel point.
Step S404, dividing the brightness grade according to the brightness information of each pixel point to one of 16 gray scale grades.
Step S405, judging whether the brightness information of each pixel point is extracted completely, and entering step S406 if the brightness information extraction of all the pixel points of the page is completed; if not, returning to the step S402, and repeating the steps of extracting the pixel points and the brightness information thereof.
Step S406, comparing the brightness information of each pixel point with the brightness information of the pixel point in the previous frame one by one, and determining a threshold point, wherein the threshold point is the target pixel point; the process proceeds to steps S407 and S408, respectively, according to the condition satisfied by the threshold point.
Step S407, judging whether the area of the threshold point reaches a refreshing condition, if so, entering step S409, controlling the ink screen to execute full-brushing, and removing the image ghost; if not, returning to step S401, obtaining the next frame page, repeating the steps of extracting the brightness information of the pixel points, comparing and determining the threshold point.
Step S408, judging whether the number of the threshold points reaches a refreshing condition, if so, entering step S409, controlling the ink screen to execute full-refreshing, and removing the image ghost; if not, returning to step S401, obtaining the next frame page, repeating the steps of extracting the brightness information of the pixel points, comparing and determining the threshold point.
Step S407 and step S408 are two parallel condition determination flows, and if one of them is satisfied, the process proceeds to step S409 to perform full brushing.
According to the steps, whether the brightness of the pixel points corresponding to the current display page and the last display page is changed from black to white is used as a reference condition, and when the times of changing the pixel points from black to white are accumulated to a certain degree and reach a certain number or area, the pixel points are used as a basis for refreshing the page, so that the page is fully refreshed at a correct time point, the accuracy of the page refreshing opportunity is improved, errors or invalid refreshing is reduced, the ghost of an electronic ink screen is effectively removed, and the user experience is improved.
Example 2
According to an embodiment of the present application, an embodiment of a refreshing apparatus for an electronic ink screen is provided. Fig. 6 is a schematic diagram of a refreshing apparatus for an electronic ink screen according to an embodiment of the present invention, as shown in fig. 6, the apparatus includes: the acquiring module 61 is configured to acquire brightness parameters of pixels in a display image of the electronic ink screen, where the brightness parameters include a first brightness parameter of a pixel in a previous frame of the display image and a second brightness parameter of a pixel in a current display image; the determining module 62 is configured to determine, according to the first brightness parameter and the second brightness parameter, a target pixel point having a preset variation trend in the electronic ink screen, where the preset variation trend is changed from dark to bright; and the refreshing module 63 is configured to determine whether to control the electronic ink screen to refresh according to the attribute information of the target pixel point.
The implementation obtains a first brightness parameter of a frame of display picture on each pixel point on the electronic ink screen and a second brightness parameter of a current display picture, compares the first brightness parameter with the second brightness parameter to obtain a brightness change trend, screens out a target pixel point according to the brightness change trend, and controls the electronic ink screen to refresh when the attribute information of the target pixel point meets a certain condition. Whether the brightness of the corresponding pixel point of the current display page and the previous frame of display page changes from dark to bright is used as a refreshing condition, so that the ghost can be eliminated more accurately, the user experience is improved, and the technical problem that the display effect of an electronic ink screen is not good due to inaccurate actual refreshing of the electronic ink screen in the prior art is solved.
As an optional embodiment, the obtaining module includes: the data acquisition submodule is used for acquiring RGB data of pixel points in a display picture; the grade division submodule is used for dividing the pixel points to corresponding brightness grades according to the RGB data; and the grade determining submodule is used for determining the brightness grade of the pixel point as the brightness parameter of the pixel point.
As an alternative embodiment, the determining module includes: the parameter calculation submodule is used for determining that the pixel point has a preset variation trend under the condition that the difference between the second brightness parameter and the first brightness parameter of any pixel point is greater than or equal to a first preset value; and the target pixel point determining submodule is used for determining pixel points with preset variation trends as target pixel points.
As an optional embodiment, the attribute information of the target pixel point includes: the quantity of target pixel points refreshes the module, includes: the quantity judgment submodule is used for controlling the electronic ink screen to be refreshed under the condition that the quantity of the target pixel points is greater than or equal to a second preset value; and under the condition that the number of the target pixel points is smaller than a second preset value, the electronic ink screen is forbidden to refresh.
As an optional embodiment, the attribute information of the target pixel point includes: the pixel area that continuous target pixel constitutes refreshes the module, includes: the area judgment submodule is used for controlling the electronic ink screen to be refreshed under the condition that the pixel area formed by the connected target pixel points is larger than or equal to a third preset value; and under the condition that the pixel area formed by the connected target pixel points is smaller than a third preset value, the electronic ink screen is forbidden to refresh.
The apparatus in this implementation also includes means for performing the other method steps in example 1.
Example 3
According to an embodiment of the present application, there is provided a computer storage medium including: the computer storage medium stores a plurality of instructions adapted to be loaded by the processor and to perform the method steps of any of the above. In the implementation, a first brightness parameter of a frame of display picture on each pixel point on the electronic ink screen and a second brightness parameter of a current display picture are obtained, a brightness change trend is obtained by comparing the first brightness parameter and the second brightness parameter, a target pixel point is screened out according to the brightness change trend, and the electronic ink screen is controlled to refresh when attribute information of the target pixel point meets certain conditions. Whether the brightness of the corresponding pixel point of the current display page and the previous frame of display page changes from dark to bright is used as a refreshing condition, so that the ghost can be eliminated more accurately, the user experience is improved, and the technical problem that the display effect of an electronic ink screen is not good due to inaccurate actual refreshing of the electronic ink screen in the prior art is solved.
Example 4
According to an embodiment of the present application, there is provided an electronic reader including: a processor and a memory; wherein the memory stores a computer program adapted to be loaded by the processor and to perform the method steps of any of the embodiment 1.
Fig. 7 is a schematic structural diagram of an electronic reader according to an embodiment of the present application, where the electronic reader includes the main body and the touch frame, and in combination with fig. 7, the electronic reader 1000 may include: at least one processor 1001, at least one network interface 1004, a user interface 1003, memory 1005, at least one communication bus 1002.
Wherein a communication bus 1002 is used to enable connective communication between these components.
The user interface 1003 may include an electronic ink screen, and the optional user interface 1003 may also include a standard wired interface or a wireless interface.
The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface), among others.
The Memory 1005 may include a Random Access Memory (RAM) or a Read-Only Memory (Read-Only Memory). Optionally, the memory 1005 includes a non-transitory computer-readable medium. The memory 1005 may be used to store an instruction, a program, code, a set of codes, or a set of instructions. The memory 1005 may include a stored program area and a stored data area, wherein the stored program area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playing function, an image playing function, etc.), instructions for implementing the various method embodiments described above, and the like; the storage data area may store data and the like referred to in the above respective method embodiments. The memory 1005 may optionally be at least one memory device located remotely from the processor 1001. As shown in fig. 7, a memory 1005, which is a kind of computer storage medium, may include therein an operating system, a network communication module, a user interface module, and an operating application of the e-reader.
In the electronic reader 1000 shown in fig. 7, the user interface 1003 is mainly used for providing an input interface for a user to obtain data input by the user; and the processor 1001 may be configured to call an operation application of the electronic reader stored in the memory 1005 and specifically perform any one of the operations of embodiment 1.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A refreshing method of an electronic ink screen is characterized by comprising the following steps:
acquiring brightness parameters of pixel points of the electronic ink screen in a display picture, wherein the brightness parameters comprise a first brightness parameter of the pixel points in a previous frame of the display picture and a second brightness parameter of the pixel points in a current display picture;
determining a target pixel point with a preset variation trend in the electronic ink screen according to the first brightness parameter and the second brightness parameter, wherein the preset variation trend is changed from dark to bright;
and determining whether to control the electronic ink screen to refresh according to the attribute information of the target pixel point.
2. The method of claim 1, wherein obtaining the brightness parameter of the pixel point of the electronic ink screen in the display frame comprises:
acquiring RGB data of pixel points in the display picture;
dividing the pixel points to corresponding brightness levels according to the RGB data;
and determining the brightness level of the pixel point as the brightness parameter of the pixel point.
3. The method of claim 1, wherein determining a target pixel point with a preset variation trend in the electronic ink screen according to the first brightness parameter and the second brightness parameter comprises:
under the condition that the difference between the second brightness parameter and the first brightness parameter of any pixel point is larger than or equal to a first preset value, determining that the pixel point has the preset variation trend;
and determining the pixel points with the preset variation trend as the target pixel points.
4. The method of claim 1, wherein the attribute information of the target pixel point comprises: the quantity of the target pixel points, whether the electronic ink screen is controlled to be refreshed or not according to the determination of the attribute information of the target pixel points, comprises the following steps:
under the condition that the number of the target pixel points is larger than or equal to a second preset value, controlling the electronic ink screen to be refreshed;
and under the condition that the number of the target pixel points is smaller than the second preset value, forbidding the electronic ink screen from refreshing.
5. The method of claim 1, wherein the attribute information of the target pixel point comprises: the pixel area formed by the connected target pixel points is determined whether to control the electronic ink screen to refresh according to the attribute information of the target pixel points, and the method comprises the following steps:
under the condition that the pixel area formed by the connected target pixel points is larger than or equal to a third preset value, the electronic ink screen is controlled to be refreshed;
and under the condition that the pixel area formed by the connected target pixel points is smaller than the third preset value, the electronic ink screen is forbidden to refresh.
6. A refreshing device of an electronic ink screen is characterized by comprising:
the acquisition module is used for acquiring the brightness parameters of the pixels in the display picture of the electronic ink screen, wherein the brightness parameters comprise a first brightness parameter of the pixels in the previous frame of display picture and a second brightness parameter of the pixels in the current display picture;
the determining module is used for determining a target pixel point with a preset variation trend in the electronic ink screen according to the first brightness parameter and the second brightness parameter, wherein the preset variation trend is changed from dark to bright;
and the refreshing module is used for determining whether to control the electronic ink screen to refresh according to the attribute information of the target pixel point.
7. The apparatus of claim 6, wherein the attribute information of the target pixel point comprises: the number of the target pixel points and the refreshing module comprise:
the quantity judgment submodule is used for controlling the electronic ink screen to be refreshed under the condition that the quantity of the target pixel points is greater than or equal to a second preset value; and forbidding the electronic ink screen from refreshing under the condition that the number of the target pixel points is less than the second preset value.
8. The apparatus of claim 6, wherein the attribute information of the target pixel point comprises: the refresh module comprises:
the area judgment submodule is used for controlling the electronic ink screen to be refreshed under the condition that the pixel area formed by the connected target pixel points is larger than or equal to a third preset value; and under the condition that the pixel area formed by the connected target pixel points is smaller than the third preset value, the electronic ink screen is forbidden to refresh.
9. A computer storage medium, characterized in that it stores a plurality of instructions adapted to be loaded by a processor and to perform the method steps of any of claims 1 to 5.
10. An electronic reader, comprising: a processor and a memory; wherein the memory stores a computer program adapted to be loaded by the processor and to perform the method steps of any of claims 1 to 5.
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