CN111326118A

CN111326118A - Device and method for setting display parameters and computer readable storage medium

Info

Publication number: CN111326118A
Application number: CN202010082847.4A
Authority: CN
Inventors: 薛峰; 匡文耀
Original assignee: Ireader Technology Co Ltd
Current assignee: Ireader Technology Co Ltd
Priority date: 2020-02-07
Filing date: 2020-02-07
Publication date: 2020-06-23
Anticipated expiration: 2040-02-07
Also published as: CN111326118B

Abstract

The present disclosure relates to an electronic reader, a method, and a computer-readable storage medium for setting display parameters, which can set contrast parameters and refresh parameters according to a ratio of characters to images of a scene of an executing application program or manually by a user, and store the contrast parameters and refresh parameters as parameter templates, and call the parameter templates when the application program is executed again, so as to provide more flexible settings and save operation time.

Description

Device and method for setting display parameters and computer readable storage medium

Technical Field

The present disclosure relates to the field of electronic reader display technology. More particularly, the present disclosure relates to an electronic reader, a method, and a computer-readable storage medium for setting display parameters.

Background

With the continuous development of the electronic paper industrialization, the electronic paper has been widely applied to different display fields, and the most representative product is an electronic reader. The electronic reader is widely used, and has the advantages of low power consumption, high contrast, no damage to eyes, convenience in carrying and the like. Besides the advantages of the electronic reader on hardware, the electronic reader continuously breaks through the application optimization function on software, for example, application optimization of a display screen is enhanced, and currently, common optimization options such as increasing font size and increasing font color are available.

However, the display updating speed of the electronic paper is slow, and the situations of smear, pause, flicker and the like also occur. In addition, most of the existing electronic readers are provided with open platforms, users can download third-party applications according to requirements, and data of some third-party applications are characters, some third-party applications are static images, and some third-party applications are dynamic images. Therefore, when integrating a plurality of applications into an electronic device equipped with electronic paper, it is difficult to display the plurality of applications normally based on the same display condition, which makes the electronic paper less adaptable.

Disclosure of Invention

To at least partially solve the technical problems mentioned in the background, aspects of the present disclosure provide an electronic reader, a method, and a computer-readable storage medium for setting display parameters.

In one aspect, the present disclosure provides an electronic reader including a processor, a first memory, a timing controller, a display driver, a display, and a second memory. The processor is used for executing one of a plurality of application programs; the first memory is used for storing a lookup table, and the lookup table is preset with driving waveforms; the time schedule controller is used for finding out a corresponding driving waveform from the lookup table according to a contrast parameter and a refreshing parameter set by the scene of the application program in execution; the display driver is used for converting the corresponding driving waveform into a control signal; the display is used for displaying the operation picture of the application program in execution according to the control signal; the second memory is used for storing the contrast parameter and the refresh parameter as parameter templates. When the executing application program is executed again, the time schedule controller calls the parameter template from the second memory.

In another aspect, the present disclosure provides a display parameter setting method of an electronic reader, wherein the electronic reader has a display component and carries a plurality of application programs, the method comprising: executing one of the plurality of applications; displaying an operation screen of the application program in execution on the display component; setting a contrast parameter according to the ratio of the characters and the images of the scene of the executing application program; setting a refreshing parameter according to the ratio of the characters to the images of the scene; and storing the contrast parameter and the refresh parameter as parameter templates. Wherein the parameter template is invoked when the executing application is executed again.

In yet another aspect, the present disclosure provides a display parameter setting method of an electronic reader, wherein the electronic reader has a display component and carries a plurality of application programs, the method comprising: receiving a start instruction to start one of the plurality of application programs; displaying an operation screen of the application program in execution on the display component; receiving the adjusted contrast parameter and the updated parameter; and storing the contrast parameter and the refresh parameter as parameter templates; wherein the parameter template is invoked when the executing application is executed again.

In yet another aspect, the present disclosure provides a computer readable storage medium having stored thereon computer program code for setting display parameters, which when executed by a processor, performs the aforementioned method.

The display parameter setting scheme disclosed by the invention not only can simplify the inconvenience of repeatedly adjusting the display parameters, but also can automatically generate the display parameters when different format data are switched or the current environment is changed, thereby providing more flexible setting and saving the operation time.

Drawings

The above and other objects, features and advantages of exemplary embodiments of the present disclosure will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. In the drawings, several embodiments of the disclosure are illustrated by way of example and not by way of limitation, and like or corresponding reference numerals indicate like or corresponding parts and in which:

FIG. 1 is a schematic diagram illustrating an electronic ink structure according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram illustrating an electrophoretic display device, according to an embodiment of the present disclosure;

FIG. 3 is a schematic diagram showing a display page of an electronic reader in accordance with an embodiment of the present disclosure;

FIG. 4 is a flow chart illustrating a display parameter setting method according to an embodiment of the present disclosure; and

fig. 5 is a flowchart illustrating a display parameter setting method according to another embodiment of the present disclosure.

Detailed Description

The technical scheme of the disclosure provides a display parameter setting method of an electronic reader on the whole. Different from the prior art, the display parameters are automatically identified and adjusted for different application programs, and the set display parameters are stored into the parameter template corresponding to the application program, so that the aim of simplifying the operation is fulfilled.

The electrophoretic display screen is a screen using electronic ink, also called electronic paper display technology, and the main structure of the electrophoretic display screen is as shown in fig. 1, and an electronic paper 100 includes a top transparent electrode layer 110, an electrophoretic layer 120, and a bottom electrode pixel layer 130. The electrophoretic layer 120 has a plurality of fine microcapsules 140, the microcapsules 140 have a transparent liquid 142 and a plurality of fine

electrophoretic particles

144, 146, the

electrophoretic particles

144, 146 are distributed in the transparent electrophoretic liquid 142 to form a suspension system, each

electrophoretic particle

144, 146 has a diameter of about 100 μm, and has a surface to which charges are easily adsorbed, and the particles capable of inducing charges can move under the action of an external electric field.

Specifically, the

electrophoretic particles

144, 146 are divided into negatively charged black particles 144 and positively charged white particles 146. When a positive voltage is applied to the bottom electrode pixel layer 130, the white particles 146 are repelled to move toward the top transparent electrode layer 110, and the black particles 144 are attracted to move toward the bottom electrode pixel layer 130, in which case the pixel appears white. Conversely, when a negative voltage is applied to the bottom electrode pixel layer 130, the white particles 146 are attracted to the bottom electrode pixel layer 130, and the black particles 144 are repelled to the top transparent electrode layer 110, so that the pixel appears black.

If positive and negative voltages are applied to different electrodes of the bottom electrode pixel layer 130, some of the white particles 146 and the black particles 144 will move toward the top transparent electrode layer 110, and the ratio of the white particles 146 and the black particles 144 floating up to the top transparent electrode layer 110 is adjusted by controlling the magnitude of the positive and negative voltages applied to the bottom electrode pixel layer 130, so as to realize gray scale display.

In the electrophoretic display panel with only two types of black and white particles, all the images are displayed in only two colors, i.e., black and white, so that for a color image, it is necessary to convert the color image into a black and white image, and usually, the color tone of the image is represented by the shade (i.e., gray scale) of the black and white image.

When displaying gray scales of an electrophoretic display screen, the particles need to be maintained at proper positions in the microcapsule space, and the voltage sequence for causing the electrophoretic motion of the black particles and the white particles is the driving waveform of the electronic paper. Optimization of the driving waveform directly affects the display effect of the electronic paper.

Fig. 2 is an apparatus schematic diagram illustrating an electronic reader 200 according to an embodiment of the present disclosure. Based on the application of the electrophoretic display screen, the electronic reader 200 converts image data to be displayed and transmits the converted image data to the display screen for display through a System On Chip (SOC). In this embodiment, the electronic reader 200 may be a mobile phone with an electronic ink screen, a computer terminal (such as a notebook computer), an electronic reading device, a smart watch, or other devices with an electronic ink screen.

As shown in fig. 2, the electronic reader 200 includes a system chip 210 and a display 220, wherein the system chip 210 includes a processor 211, a Timing Controller (TCON) 212, a display driver 213, a first memory 214 and a second memory 215.

Specifically, the Display driver 213 is an Electrophoretic Display driver (EPDC), and correspondingly, the Display 220 is an Electrophoretic Display (EPD).

The first Memory 214 may be a Random Access Memory (RAM), also called a main Memory, which is an internal Memory for directly exchanging data with the timing controller 212. The first memory 214 stores one or more Look-Up tables (LUTs) preset with driving waveforms of the display 220. When the processor 211 receives image data to be displayed, the image data is transmitted to the timing controller 212, and the timing controller 212 sets a contrast parameter and a refresh parameter according to a scene of an application program, and finds out a corresponding control parameter, that is, a driving waveform, through a lookup table. In some application scenarios, the contrast parameter and the refresh parameter are text-to-image ratios based on the currently open picture or data type of the executing application, or manually set by a user. Then, the display driver 213 converts the driving waveform into a control signal to drive the ink particles on the display 220 to move, so that the image data to be displayed can be imaged on the display 220.

Since the black and white particles in the display 220 are sensitive to temperature, the lower the temperature, the less active the particles, the longer it takes to move to the same position in the microcapsule at room temperature; the particles move faster when the temperature is higher, and the time required to move to the same location in the microcapsule is relatively shorter compared to the time required at normal temperature. To address this characteristic, the soc 210 is further provided with a temperature sensor 216 for collecting temperature data on the display 220, and the display 220 is driven by selecting an appropriate driving waveform according to the temperature detected by the temperature sensor 216.

In more detail, the temperature sensor 216 may be made of a diode, a thermistor, or other materials, but is not limited thereto. Taking a diode as an example, the temperature variation affects the current passing through the diode, and the timing controller 212 can obtain the temperature value by detecting the current passing through the diode.

High contrast is a major advantage of electronic readers. Generally, the contrast ratio is a ratio of black to white of a picture, that is, a gradation from black to white, and the larger the ratio, the more gradation, and thus the richer the visual performance, can be used as an index for evaluating the display performance of the electronic reader. The influence of the contrast on the visual effect is very critical, and the higher the contrast is, the clearer and more striking the image is and the more layering is displayed; and the contrast is low, so that the whole picture feels gray.

The frame refresh is another important index for evaluating the e-reader, but the higher the value of the frame refresh is, the better the value of the frame refresh is not always. If the refreshing is too complete, the response will be slow, the power consumption will be too high, and if the refreshing is too fast, the reading will be affected by the ghost.

When the timing controller 212 receives the feedback value from the temperature sensor 216, the appropriate driving waveform in the lookup table is found out by searching and comparing in accordance with the contrast and refresh mode required by the current frame, and the driving waveform is transmitted to the display driver 213, so as to control the display 220 to display the converted image.

The embodiments of the present disclosure further illustrate the technical content of the disclosed solution with contrast and refresh as the main setting conditions for application optimization, which will be exemplarily described below with reference to fig. 2 and 3.

FIG. 3 is a schematic diagram illustrating a display page of an electronic reader 300 according to an embodiment of the present disclosure. As shown in fig. 3, the e-reader 300 can present a display 310, the display 310 being for displaying all third party applications. The user may download various third party applications according to preferences, including a reading APP, a dictionary APP, a browser, a software tool, etc., this embodiment illustrates 9 applications: the first application to the ninth application.

The types of data provided by different third party applications may also vary, and may specifically include plain text novels, partial text or picture readouts, still image data such as a picture book or web album, and moving image data such as video, animation, etc. This embodiment does not limit the number and data types of third party applications.

The display parameter conditions required by the various data types are different, and particularly when the data to be displayed is dynamic image data such as video, animation, and the like, because the frame updating speed of the display 220 is slow, when the dynamic image data is pushed to the display 220, the phenomena of smear, flicker, or blocking often occur.

In order to enable different data to be displayed normally on the display 220, in the embodiment of the present disclosure, the data types of different third-party applications are analyzed, the final analysis result is stored as a template in the form of display parameters, and the template is stored in the second memory 215.

When the user selects a specific application by touch on the display screen 310, for example, the user clicks an icon of the first application 320, the processor 211 starts the application, the timing controller 212 transmits the driving waveform to the display driver 213, and the display driver 213 drives the display 220 to display an operation screen of the first application 320. As soon as an application is opened, a different application may present a different portal, such as a user login interface or home page, on the display 220.

The user may then select the type of data to be read. The timing controller 212 sets a contrast parameter according to a ratio of characters to images in a scene of the first application 320. The setting mode may be determined based on the currently opened frame or by the system recognizing the data type of the application, and if the first application 320 is an application dedicated to providing the comic data, the timing controller 212 classifies it as an application requiring a very high contrast. Alternatively, the timing controller 212 randomly extracts one or more data types from the application to determine the text-to-image ratio.

In this embodiment, if the data type belongs to dynamic image data, the ratio of the text to the image may be calculated by acquiring a current frame of the dynamic image data, or randomly acquiring one frame of data of the dynamic image data when the dynamic data is displayed.

In some scenarios, low contrast may be sufficient for data with large black and white contrast (e.g., plain text). However, if a static image (e.g., a color photograph) is desired to be rendered with a plurality of colors, the effect of high contrast on the image is relatively obvious, and more gray scales are helpful to completely reflect the color gradation especially after the timing controller 212 changes the color to the gray scale. The contrast has the greatest influence on the display effect of the dynamic image, the bright-dark conversion of the dynamic image is relatively fast, and the higher the contrast is, the easier the eyes of people can distinguish the conversion process, so that in some scenes with fast bright-dark conversion, the contrast is increased, which is beneficial to better presenting the details and the definition of the picture and the continuous action of a high-speed moving object.

Then, the timing controller 212 sets a refresh parameter according to a ratio of characters to images in the scene. The refresh parameters relate to a plurality of refresh modes, common refresh modes being as follows:

a2: the originally displayed gray scale content is presented in black and white two-pole gray scale, so that the time and power consumption brought by rendering the gray scale are reduced, and the refreshing speed is high. Generally applied in the case of pure text or text-to-image ratio greater than 1 (i.e. text is the majority).

GC: all pixels in the refresh area are output again, and before output, the refresh area is performed with a screen clearing operation, which can be subdivided into GC4, GC8, GC16, etc., which respectively represent that 4, 8 and 16 gray levels can be supported, the refresh rate is slowest, but the residual shadow is least. The GC refresh is also called full-screen refresh, i.e. the entire page is refreshed once, regardless of whether the front and rear gray levels of the same pixel change. Due to the fact that the electronic ink particles are completely rearranged in the page turning process, the screen can be obviously blacked. It is generally applied to the situation where the ratio of text to image is less than 1 (i.e. the image is a majority) and the situation is a pure static image.

GU: the pixels which are not subjected to the screen clearing operation before the data output and are changed from the last output are directly output, including GU8, GU16 and the like, which similarly support 8 kinds and 16 kinds of gray scales, respectively, and the refresh rate is slower than that of A2 but faster than that of GC. GU refreshing is also called partial refreshing, the speed is acceptable when the page is turned, and the page change is smooth. Although no obvious black screen phenomenon is observed visually, the afterimage is more and more serious after the pages are turned for many times. Generally in the context of dynamic images.

According to the above description, the local refreshing speed is ideal and does not affect reading, and the defects are that after the screen is refreshed for several times, a hidden visible ghost can appear, the page refreshed through the full screen is very clean, and the defects are that the refreshing speed is slow and the screen flashing phenomenon exists. Therefore, the timing controller 212 of this embodiment can be configured to use a partial refresh mode when reading, page turning is faster, but a ghost affects reading and then perform full-screen refresh. Specifically, the timing controller 212 may set that after the partial refresh is performed for 5 times, a full screen refresh operation is automatically performed once, or the full screen refresh is performed only when the chapter is over or the picture is browsed, and the partial refresh is mainly performed at other times, so as to avoid the reading experience being affected by the frequent full screen refresh.

Furthermore, when the display frame is dynamic data, the refresh rate of the current electrophoretic display cannot catch up with the playing rate of the dynamic data, so the refresh parameters can be specially adjusted for responding to the dynamic data. For example, the setting is based on a specific time interval, such as the refresh parameter setting is refreshed every 0.5 seconds, that is, the data of the next frame is displayed every 0.5 seconds, and the middle dynamic data is skipped and not displayed. For example, the data of the next frame is displayed every 60 frames, in other words, when the refresh parameter is 60 frames of data, it means that the 60 frames of dynamic data are used as a group of display frames, only the 1 st frame of dynamic data is captured for display, the middle (2 nd to 60 th frames) of dynamic data is filtered, the 61 st frame of dynamic data is displayed, and so on.

The dynamic filtering is performed to reduce the time and power consumption caused by updating the display screen for many times and reduce the problem of image sticking. However, if the refresh parameter value is set too high, the display screen is likely to be discontinuous, which affects the comfort of viewing. Therefore, the refreshing parameters of dynamic filtering can be set according to the type of the dynamic data, taking specific frame number data as an interval as an example, the dynamic data is a natural landscape picture with slowly changing scene, and the refreshing parameters can be set to 60-80 frame data; conversely, if the dynamic data is a motion competition picture with a fast scene change, the refresh parameter can be set to 40-60 frame data. The description herein of refresh parameters is exemplary only and not limiting. And are not intended to limit the scope of the present invention.

After the contrast parameters and the refresh parameters are set, the timing controller 212 stores the contrast parameters and the refresh parameters as parameter templates in the second memory 215. The next time the first application 320 is executed, the timing controller 212 will invoke the parameter template, which is sent directly to the display driver 213 to drive the display 220 to display the appropriate visual condition. Specifically, each third party application has its corresponding parameter template, and the timing controller 212 will automatically invoke the adapted parameter template the next time the application is executed again.

This embodiment may also have a default parameter template stored, and the timing controller 212 may automatically invoke the adapted parameter template based on the text-to-image ratio of its data when the application is executed. In more detail, when the user clicks an icon of one of the applications, the timing controller 212 searches whether there is a corresponding parameter template from the second memory 215 based on the type of data in the application. If no corresponding or suitable template is found, the parameter template is set by the aforementioned method or manually. If there is a corresponding or appropriate template, the timing controller 212 sends the settings in the parameter template to the display driver 213, so that the display 220 refreshes the screen with the appropriate parameters.

In other embodiments, the display parameter setting may also be implemented manually by the user. Based on the difference of personal reading habits, if the user is not satisfied with the automatically generated display parameter result, manual fine adjustment can be performed, that is, the contrast parameter and the refresh parameter are dynamically adjusted at any time according to the current use environment when the application program is started or executed. When the user selects the manual operation, the display 220 displays a setting optimization menu provided by the operating system, and the display mode may be a table or other format, which is not limited in this embodiment.

After the user adjusts the desired settings by setting the optimization menu, the timing controller 212 receives the new contrast parameters and refresh parameters and sends these parameters to the display driver 213, so that the screen on the display 220 is adjusted accordingly. Further, the timing controller 212 stores the changed parameter template in the second memory 215 for later use when executing the same application program. In some application scenarios, the user may manually set a specific ambient environment and store the same as a corresponding parameter template, for example: when the device is used outdoors, the contrast is adjusted to be high, or the full-screen refresh mode which consumes the most power is turned off under the condition that the power supply is exhausted quickly. However, if these settings are only temporary, the user may choose not to store manually changed display parameters.

Fig. 4 is a flowchart illustrating a display parameter setting method according to an embodiment of the present disclosure, which may be implemented by the electronic reader 200 of fig. 2.

At step 401, the method 400 executes one of a plurality of applications, which may be applications provided by a plurality of different third parties, wherein the plurality of applications provide a variety of types of data, such as: including text and/or image data, wherein the image may be subdivided into still image data or moving image data. The user selects the data to be read by clicking on an icon of one of the applications to open the application.

At step 402, the method 400 displays an operation screen of an executing application on a display component, which may be the display 220 of FIG. 2.

At step 403, the method 400 sets a contrast parameter according to a ratio of text to image in the scene. When the ratio of the characters to the images of the application program is determined, the currently opened picture can be used as a determination page of the display parameter, or the data type of the application program is identified by the system, or one or more data in the application program is randomly extracted as a reference for determining the ratio of the characters to the images. In addition, the user can also select the page to be judged by himself, such as double-clicking the screen or informing the system in other modes to carry out contrast optimization, so that the system can judge the image and text of the current read page to automatically adjust the contrast. Specifically, when the data to be displayed is dynamic image data, the ratio of the text to the image can be calculated by acquiring the current frame or acquiring one frame of data of the dynamic image data in a random manner.

At step 404, the method 400 sets refresh parameters based on the ratio of text to image in the scene. The embodiment can support refresh modes such as A2, GC, GU, etc., and will not be described in detail. Similarly, the partial refresh rate is ideal and does not affect reading, but has the disadvantage that after several screen swipes, a hidden visible afterimage appears. The page refreshed through the full screen is very clean, and the defects are that the refreshing speed is slow and the screen flashing phenomenon exists. Therefore, in this step, it can be further set that a local refresh mode is used during reading, the page turning is faster, and after the local refresh is performed several times, for example, 5 times, a full screen refresh operation is automatically performed once. Or the full screen refreshing is carried out when the chapters are finished or the pictures are browsed, and the local refreshing is mainly carried out at other times so as to avoid the influence of the frequent full screen refreshing on the reading experience.

At step 405, the method 400 stores the aforementioned contrast parameters and refresh parameters as parameter templates. When the application is executed again, these parameter templates are invoked.

Fig. 5 is a flowchart illustrating a display parameter setting method according to another embodiment of the present disclosure, which may be implemented by the electronic reader 200 of fig. 2.

At step 501, the method 500 accepts a start instruction from a user to launch a particular application. Specifically, the user may select the data to be read by clicking on an icon of one of the applications to open the application.

At step 502, the method 500 searches for a corresponding parameter template by determining the type of the application, for example, calling a parameter template that has been set for the application before, or calling a preset parameter template according to the data characteristics of the application.

At step 503, the method 500 displays an operation screen on the display component according to the settings in the parameter template.

At step 504, adjusted contrast parameters and refresh parameters are received. In more detail, based on the difference of the individual reading habits or the change of the current environment, if the display parameters in step 503 are not satisfactory, the manual fine adjustment may be further performed, in this step, the user clicks and opens the setting optimization menu, after the method 500 receives the signal, the setting optimization menu is displayed for the user to adjust the contrast or refresh mode, and the system receives the adjusted contrast parameters and refresh parameters.

At step 505, a parameter template is stored, i.e., the adjusted contrast parameter and refresh parameter are stored and overwritten on the original contrast parameter and refresh parameter. When the executing application is executed again, the updated parameter template is invoked.

Through the manual adjustment mode, the user can adjust the required parameters by oneself, and the flexibility of the electronic reader in setting is effectively improved.

The present disclosure also discloses a computer-readable storage medium comprising a computer program for setting display parameters, which when executed by a processor may perform the method described in fig. 4 and 5.

In summary, the display parameter setting scheme disclosed herein not only can simplify the inconvenience of repeatedly adjusting display parameters, but also can automatically generate display parameters when different format data is switched or the current environment changes, thereby providing a more convenient setting manner.

It should be understood that the terms "first," "second," "third," and "fourth," etc. in the claims, description, and drawings of the present disclosure are used to distinguish between different objects and are not used to describe a particular order. The terms "comprises" and "comprising," when used in the specification and claims of this disclosure, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It is also to be understood that the terminology used in the description of the disclosure herein is for the purpose of describing particular embodiments only, and is not intended to be limiting of the disclosure. As used in the specification and claims of this disclosure, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should be further understood that the term "and/or" as used in the specification and claims of this disclosure refers to any and all possible combinations of one or more of the associated listed items and includes such combinations.

The foregoing detailed description of the embodiments of the present disclosure has been presented for purposes of illustration and description and is intended to be exemplary only and is not intended to be exhaustive or to limit the invention to the precise forms disclosed. Meanwhile, a person skilled in the art should, according to the idea of the present disclosure, change or modify the embodiments and applications of the present disclosure. In view of the above, this description should not be taken as limiting the present disclosure.

Claims

1. An electronic reader, comprising:

a processor for executing one of a plurality of application programs;

the first memory is used for storing a lookup table, and the lookup table is preset with a driving waveform;

the time schedule controller is used for finding out a corresponding driving waveform from the lookup table according to a contrast parameter and a refreshing parameter set by the scene of the application program in execution;

a display driver for converting the corresponding driving waveform into a control signal;

the display is used for displaying an operation picture of the application program in execution according to the control signal; and

the second memory is used for storing the contrast parameter and the refreshing parameter as parameter templates;

wherein, when the executing application program is executed again, the parameter template is called by the time schedule controller from the second memory.

2. The electronic reader of claim 1, wherein the contrast parameter and the refresh parameter are text-to-image ratios based on a currently open screen or a data type of the executing application, or are manually set by a user.

3. The electronic reader according to claim 2, wherein when the scene is moving image data, the timing controller obtains a current frame of the moving image data or randomly obtains a frame data of the moving image data to calculate the ratio.

4. The electronic reader according to claim 2, wherein when said scene is moving image data, said refresh parameter is set at intervals of a number of frames of said moving image data.

5. The electronic reader of claim 1, wherein the refresh parameters include the following patterns: black and white two-pole gray scale mode, full screen mode and local mode.

6. The electronic reader of claim 5, wherein the refresh parameter is the black and white two-pole gray scale when the timing controller determines that the scene is plain text or the ratio is greater than 1.

7. The electronic reader of claim 5, wherein the refresh parameter is the full screen mode when the timing controller determines that the scene is the ratio less than 1, a static image, or a chapter end.

8. The electronic reader according to claim 5, wherein the refresh parameter is the local mode when the timing controller judges that the scene is a moving image.

9. A method for setting display parameters of an electronic reader, wherein the electronic reader has a display component and carries a plurality of application programs, the method comprising:

receiving a start instruction to start one of the plurality of application programs;

displaying an operation screen of the application program in execution on the display component;

receiving the adjusted contrast parameter and the updated parameter; and

storing the contrast parameter and the refreshing parameter as parameter templates;

wherein the parameter template is invoked when the executing application is executed again.

10. A computer-readable storage medium having stored thereon computer program code for setting display parameters, which when executed by a processor performs the method according to any of the claims 9.