CN114387930B - Data display system, method, device, equipment and readable storage medium - Google Patents

Data display system, method, device, equipment and readable storage medium Download PDF

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CN114387930B
CN114387930B CN202210210188.7A CN202210210188A CN114387930B CN 114387930 B CN114387930 B CN 114387930B CN 202210210188 A CN202210210188 A CN 202210210188A CN 114387930 B CN114387930 B CN 114387930B
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data
displayed
electronic ink
ink screen
display
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CN114387930A (en
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潘峥韵
朱增
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ONYX INTERNATIONAL Inc
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ONYX INTERNATIONAL Inc
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3433—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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0252—Improving the response speed

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  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
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Abstract

The application provides a data display system, a method, a device, equipment and a readable storage medium, which can receive a display instruction comprising data to be displayed; calculating the frame rate of data to be displayed; determining a refresh mode of the data to be displayed based on the frame rate; thereby controlling the operating voltage of the electronic ink screen to display the data to be displayed with reference to the refresh mode. The electronic ink screen corresponding to different refresh modes has different operation voltages and paths for adjusting gray scale, and thus, the driving speeds are different. The operating voltage of the electronic ink bag of each pixel point of the electronic ink screen for displaying the data to be displayed is controlled according to the data refreshing mode, the defect that the electronic ink screen is driven by adopting a fixed mode is overcome, the operating voltage in the electronic ink bag of each pixel point in the electronic ink screen can be determined efficiently according to the data refreshing mode to be displayed, the driving time of the electronic ink screen is shortened, and the driving speed of the electronic ink screen is improved.

Description

Data display system, method, device, equipment and readable storage medium
Technical Field
The present application relates to the field of data processing technologies, and in particular, to a data display system, method, apparatus, device, and readable storage medium.
Background
With the rapid development of the mobile internet, the development of the electronic ink screen technology is better and better, the electronic ink screen displays data by using an electrophoresis technology, and the display effect of the electronic ink screen is very close to that of the traditional paper, so the electronic ink screen is also called as 'electronic paper'.
The electronic ink screen generates different magnetic fields by applying different operating voltages to Thin Film Transistors (TFTs) in the screen, so that charged pigment particles in an electronic ink bag corresponding to each pixel point in the electronic ink screen are controlled to be adsorbed at the bottom or the top of the capsule to achieve the effect of displaying different colors, but the process of controlling the pigment particles to be adsorbed at the bottom or the top of the capsule through the magnetic fields is a physical process, so that certain waiting time is needed, and in addition, a plurality of intermediate processes are possibly needed in the process of changing the electronic ink bag in the electronic ink screen from one color to another color, and certain time is also needed.
Therefore, how to increase the driving speed of the electronic ink screen to achieve better data display is a constant concern.
Disclosure of Invention
In view of the above, a data display system, method, apparatus, device and readable storage medium are provided to solve the technical defect of time consumption of displaying data on an electronic ink screen in the prior art.
A data display system, comprising:
a programmable logic device FPGA, a controller and an electronic ink screen, wherein the FPGA is respectively connected with the controller and the electronic ink screen,
the controller is used for receiving a display instruction sent by a user and sending the display instruction to the FPGA;
the FPGA is used for calculating the frame rate of the data to be displayed when the display instruction comprises the data to be displayed, and determining the refresh mode of the data to be displayed based on the frame rate; controlling the operating voltage of the electronic ink screen to display the data to be displayed based on the refreshing mode;
or the like, or, alternatively,
the FPGA is used for determining an updating strategy of the data to be displayed based on pixel data difference information between current frame picture data displayed in the electronic ink screen at the current moment and next frame picture data of the current frame picture data in the data to be displayed when the display instruction comprises the data to be displayed, and controlling the operating voltage of the electronic ink screen so as to display the data to be displayed according to the updating strategy.
Preferably, the process of determining the refresh mode of the data to be displayed by the FPGA based on the frame rate includes:
judging the size relation between the frame rate of the data to be displayed and a preset first threshold value and a preset second threshold value, wherein the preset first threshold value is smaller than the preset second threshold value;
if the frame rate of the data to be displayed is not greater than a preset first threshold, determining that the refresh mode of the data to be displayed is a global refresh mode;
if the frame rate of the data to be displayed exceeds a preset first threshold and is not greater than a preset second threshold, determining that the refresh mode of the data to be displayed is a local refresh mode;
and if the frame rate of the data to be displayed exceeds a preset second threshold, determining that the refresh mode of the data to be displayed is a quick refresh mode.
Preferably, the process of controlling the operating voltage of the electronic ink screen to display the data to be displayed by the FPGA based on the refresh mode includes:
and the FPGA applies different operating voltages to the electronic ink bag of each pixel point of the electronic ink screen for displaying the data to be displayed based on the refreshing mode of the data to be displayed so as to display the data to be displayed.
Preferably, the process of determining, by the FPGA, an update policy of the data to be displayed based on pixel data difference information between current frame picture data displayed in the electronic ink screen at a current moment and next frame picture data of the current frame picture data in the data to be displayed, and controlling an operating voltage of the electronic ink screen to display the data to be displayed according to the update policy includes:
determining current frame picture data displayed in the electronic ink screen at the current moment and next frame picture data of the current frame picture data in the data to be displayed;
determining a difference rate of pixel data of the current frame picture data and the next frame picture data;
judging whether the difference rate is smaller than a preset third threshold value or not;
if the difference rate is greater than or equal to a preset third threshold, updating the current frame of picture data displayed in the electronic ink screen into the next frame of picture data, and controlling the operating voltage of the electronic ink screen to display the data to be displayed;
and if the difference rate is smaller than a preset third threshold value, starting a timer, stopping the process of determining the difference rate before the timer finishes timing, and after the timer finishes timing, updating the current frame of picture data displayed in the electronic ink screen into the next frame of picture data, and controlling the operating voltage of the electronic ink screen to display the data to be displayed.
Preferably, if the display instruction includes display attribute information of the data to be displayed but does not include the data to be displayed, the FPGA is further configured to generate target data to be displayed corresponding to the display attribute information of the data to be displayed based on the display instruction;
calculating the frame rate of the target data, and determining the refresh mode of the target data based on the frame rate of the target data; controlling an operating voltage of the electronic ink screen to display the target data based on a refresh mode of the target;
or the like, or, alternatively,
and determining an updating strategy of the target data based on pixel data difference information between the current frame picture data displayed in the electronic ink screen at the current moment and the next frame picture data of the current frame picture data in the target data, and controlling the operating voltage of the electronic ink screen to display the target data according to the updating strategy.
A data display method is applied to an FPGA in a data display system, the system also comprises a controller and an electronic ink screen, the FPGA is respectively connected with the controller and the electronic ink screen, and the method comprises the following steps:
receiving a display instruction sent by the controller;
if the display instruction comprises data to be displayed, calculating the frame rate of the data to be displayed, and determining the refresh mode of the data to be displayed based on the frame rate; controlling the operating voltage of an electronic ink screen used for displaying the data to be displayed to display the data to be displayed based on the refreshing mode;
or the like, or a combination thereof,
if the display instruction comprises the data to be displayed, determining an updating strategy of the data to be displayed based on pixel data difference information between current frame picture data displayed in the electronic ink screen at the current moment and next frame picture data of the current frame picture data in the data to be displayed, and controlling the operating voltage of the electronic ink screen for displaying the data to be displayed so as to display the data to be displayed according to the updating strategy.
Preferably, the determining a refresh mode of the data to be displayed based on the frame rate includes:
judging the size relation between the frame rate of the data to be displayed and a preset first threshold value and a preset second threshold value, wherein the preset first threshold value is smaller than the preset second threshold value;
if the frame rate of the data to be displayed is not greater than a preset first threshold, determining that the refresh mode of the data to be displayed is a global refresh mode;
if the frame rate of the data to be displayed exceeds a preset first threshold and is not greater than a preset second threshold, determining that the refresh mode of the data to be displayed is a local refresh mode;
and if the frame rate of the data to be displayed exceeds a preset second threshold, determining that the refresh mode of the data to be displayed is a quick refresh mode.
A data display device comprising:
the instruction receiving unit is used for receiving a display instruction sent by the controller;
the first voltage control unit is used for calculating the frame rate of the data to be displayed when the display instruction comprises the data to be displayed, and determining the refresh mode of the data to be displayed based on the frame rate; controlling the operating voltage of an electronic ink screen used for displaying the data to be displayed to display the data to be displayed based on the refreshing mode;
and the second voltage control unit is used for determining an updating strategy of the data to be displayed based on pixel data difference information between the current frame picture data displayed in the electronic ink screen at the current moment and the next frame picture data of the current frame picture data in the data to be displayed when the display instruction comprises the data to be displayed, and controlling the operating voltage of the electronic ink screen for displaying the data to be displayed so as to display the data to be displayed according to the updating strategy.
A data display device, comprising: one or more processors, and a memory;
the memory has stored therein computer readable instructions which, when executed by the one or more processors, implement the steps of the data display system and data display method as previously described.
A readable storage medium having stored therein computer readable instructions, which, when executed by one or more processors, cause the one or more processors to carry out the steps of the data display method as introduced above.
According to the technical scheme, after the FPGA receives the display instruction sent by the controller, the FPGA is further utilized to judge whether the display instruction comprises data to be displayed; if the FPGA determines that the display instruction comprises data to be displayed, the FPGA can be used for directly calculating the frame rate of the data to be displayed; so that the FPGA can determine the refresh mode of the data to be displayed based on the frame rate of the data to be displayed; after determining the refresh mode of the data to be displayed, the FPGA may control the operating voltage of the electronic ink screen for displaying the data to be displayed to display the data to be displayed with reference to the refresh mode of the data to be displayed. In addition, in the present application, the FPGA may further determine an update policy of the data to be displayed based on pixel data difference information between current frame picture data displayed in the electronic ink screen at a current moment and next frame picture data of the current frame picture data in the data to be displayed, and control an operating voltage of the electronic ink screen for displaying the data to be displayed so as to display the data to be displayed according to the update policy.
The operating voltage applied to the electronic ink screen and the paths for adjusting the gray scale of the electronic ink screen are different for different refresh modes, so that the driving speed is different. Therefore, the operating voltage of the electronic ink bag of each pixel point of the electronic ink screen for displaying the data to be displayed is controlled according to the refreshing mode of the data to be displayed, the defect that the electronic ink screen is driven by adopting a fixed mode is overcome, the operating voltage in the electronic ink bag of each pixel point in the electronic ink screen can be determined efficiently according to the refreshing mode of the data to be displayed, the driving time of the electronic ink screen is shortened, and the driving speed of the electronic ink screen is improved. Secondly, determining an updating strategy of the data to be displayed according to pixel data difference information between the current frame picture data displayed in the electronic ink screen at the current moment and the next frame picture data of the current frame picture data in the data to be displayed, and determining different updating strategies according to different difference conditions between the current frame picture data and the next frame picture data of the current frame picture data in the data to be displayed, so that the driving and calculating time of equipment can be effectively reduced, and the driving speed of the electronic ink screen and the data display efficiency are also improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without any creative efforts.
Fig. 1 is a schematic diagram of a data display system according to an embodiment of the present disclosure;
fig. 2 is a flowchart of a method for implementing data display according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a data display device according to an example of the present application;
fig. 4 is a block diagram of a hardware structure of a data display device disclosed in an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.
In view of the fact that most electronic ink screen manufacturers often provide a Waveform file while providing an electronic ink screen at present, the Waveform file defines a specific intermediate process required by color change of each pixel point in the electronic ink screen. When a user drives the electronic ink screen, the user needs to determine which intermediate processes need to be passed through according to the Waveform file, the color currently displayed by each pixel point of the electronic ink screen and the target color to be displayed, and different operating voltages are applied to the electronic ink bag of each pixel point of the electronic ink screen in the intermediate processes. Because of the complexity of electronic ink screen driving, the electronic ink screen is generally driven by a dedicated electronic ink screen Display Controller (EPDC), which includes a data management module with a memory and a cache, and a screen timing control circuit, so that the driving of the electronic ink screen is greatly simplified, and the development time of the electronic ink screen device is saved. However, the EPDC display controller is generally integrated on the main board SOC of the device, or a dedicated chip provided by a third party manufacturer is used, so that the interface and function of the EPDC display controller are relatively fixed, and the updating frequency is slow, which cannot meet the new requirement of the electronic ink screen that the application scene is changing day by day.
However, the connection ports of the electronic ink screen generally have multiple modes, such as MIPI DSI mode and LVDS mode. The MIPI DSI mode has two modes of a command mode and a video mode. LVDS mode only supports video mode. The interface and function of the EPDC display controller are fixed, and the compatibility is poor.
Therefore, the applicant of the present application has studied a data display scheme, which aims to solve the problems of time consumption of driving of an electronic ink screen and poor compatibility of a display controller. The data display method can be realized by adopting a programmable logic device FPGA. Compared with the method that the EPDC display controller is used for controlling to drive the electronic ink screen, the method and the device have the advantages that the programmable logic device FPGA is used for processing the data to be displayed, the FPGA can be better compatible with the electronic ink screens and the controllers of different types of interfaces, and the cost of data display is effectively reduced.
An alternative system architecture that can implement data display according to the embodiment of the present application is described below with reference to fig. 1. As shown in fig. 1, the system architecture may include: a programmable logic device FPGA10, a controller 20 and an electronic ink screen 30.
Wherein, the FPGA10 is respectively connected with the controller 20 and the electronic ink screen 30,
the controller 20 may be configured to receive a display instruction sent by a user, and send the display instruction to the FPGA10;
the FPGA10 may be configured to calculate a frame rate of the data to be displayed when the display instruction includes the data to be displayed, and determine a refresh mode of the data to be displayed based on the frame rate; the operating voltage of the electronic ink screen 30 can be controlled to display the data to be displayed based on the refresh mode;
or the like, or, alternatively,
the FPGA10 may be configured to, when the display instruction includes data to be displayed, determine an update policy of the data to be displayed based on pixel data difference information between current frame picture data displayed in the electronic ink screen at a current moment and next frame picture data of the current frame picture data in the data to be displayed, and control an operating voltage of the electronic ink screen 30 to display the data to be displayed according to the update policy.
As can be seen from the above technical solutions, in the embodiment of the present application, a data display system composed of the FPGA10, the controller 20, and the electronic ink screen 30 may be used to determine a refresh mode of data to be displayed according to a frame rate of the data to be displayed, and control an operating voltage of the electronic ink screen 30 based on the refresh mode of the data to be displayed, so as to display the data to be displayed. Or the update policy of the data to be displayed may be determined according to the pixel data difference information between the current frame picture data displayed in the electronic ink screen 30 at the current moment and the next frame picture data of the current frame picture data in the data to be displayed, and correspondingly, the operation voltages applied to the electronic ink screen 30 may also be different, so that the update policy of the data to be displayed is determined based on the pixel data difference information between the current frame picture data displayed in the electronic ink screen 30 at the current moment and the next frame picture data of the current frame picture data in the data to be displayed, and the operation voltage of the electronic ink screen 30 may be well controlled according to the display requirement of the data to be displayed, so as to display the data to be displayed. The driving speed of the electronic ink screen 30 and the efficiency of data display are better improved.
As can be seen from the above description, the FPGA10 may be configured to calculate a frame rate of the data to be displayed when the display instruction includes the data to be displayed, and determine a refresh mode of the data to be displayed based on the frame rate.
Based on this, next, with reference to fig. 2, a process of determining a refresh mode of the data to be displayed by the FPGA10 based on the frame rate is described, which may include the following steps:
step S101, judging the size relation between the frame rate of the data to be displayed and a preset first threshold value and a preset second threshold value.
Specifically, due to the characteristics of the electronic ink screen, if the global refresh mode with the best display effect is adopted, the refresh rate of the data becomes lower, but the display effect of the data is the best; when the local refresh mode with a higher speed is adopted, the refresh rate of the data can be greatly improved, the local refresh mode can better deal with the data with a higher update frequency, but in the local refresh mode, the display effect of the data is slightly worse than that in the global refresh mode. And the maximum frame rate supported by each refresh mode is different. Therefore, after determining the frame rate of the data to be displayed, the FPGA10 may further determine a size relationship between the frame rate of the data to be displayed and a preset first threshold and a preset second threshold. Wherein the preset first threshold is smaller than a preset second threshold. In order to determine the refresh mode of the data to be displayed.
If the frame rate of the data to be displayed is not greater than the preset first threshold, which indicates that the update frame rate of the data to be displayed is small, the update speed is slow, and the quality requirement on the display picture of the data is high, step S102 may be executed; if the frame rate of the data to be displayed exceeds a preset first threshold and is not greater than a preset second threshold, step S103 may be executed; if the frame rate of the data to be displayed exceeds the preset second threshold, step S104 may be executed.
Step S102, determining that the refresh mode of the data to be displayed is a global refresh mode.
Specifically, if the frame rate of the data to be displayed is not greater than a preset first threshold, it indicates that the number of frames refreshed per second of the data to be displayed is low, and the refresh rate of the data to be displayed is low, it may be determined that the refresh mode of the data to be displayed is the global refresh mode. When the frame rate of the data to be displayed is lower than a preset first threshold, a global refresh mode is selected to better match the frame rate of the data to be displayed, and the display effect of the data to be displayed is improved.
After the refresh mode of the data to be displayed is determined to be the global refresh mode, the operating voltage and the gray level of the electronic ink bag of each pixel point of the electronic ink screen 30 can be directly reset to the initial state, and then the operating voltage and the gray level of the electronic ink bag of each pixel point of the electronic ink screen 30 are controlled and driven according to the data to be displayed, so that the display effect of the data to be displayed is improved.
Step S103, determining that the refresh mode of the data to be displayed is a local refresh mode.
Specifically, if the frame rate of the data to be displayed exceeds a preset first threshold and is not greater than a preset second threshold, it indicates that the number of frames refreshed by the data to be displayed per second is higher, and the refresh rate of the data to be displayed is higher, it may be determined that the refresh mode of the data to be displayed is the local refresh mode. When the frame rate of the data to be displayed exceeds a preset first threshold and is not greater than a preset second threshold, the frame rate of the data to be displayed can be better matched by selecting a local refresh mode, and the refresh rate of the data to be displayed is improved.
After the refresh mode of the data to be displayed is determined to be the partial refresh mode, the operation voltage and the gray level of the electronic ink bag of each pixel point of the electronic ink screen are not reset, and the operation voltage and the gray level of the electronic ink bag of each current pixel point of the electronic ink screen 30 can be directly and correspondingly adjusted according to the new pixel data, so that the refresh speed of the electronic ink screen 30 is increased.
And step S104, determining that the refresh mode of the data to be displayed is a quick refresh mode.
Specifically, if the frame rate of the data to be displayed exceeds a preset second threshold, it indicates that the refresh rate of the data to be displayed is very high, and the selection of the local refresh mode does not adapt to the display requirement of the data to be displayed. A faster refresh mode needs to be employed to display the data to be displayed. Therefore, if the frame rate of the data to be displayed exceeds a preset second threshold, it may be determined that the refresh mode of the data to be displayed is the fast refresh mode. Wherein the fast refresh mode comprises a DU refresh mode and an A2 refresh mode. And when the refresh mode of the data to be displayed is determined to be the fast refresh mode, the data to be displayed can be switched to one of the DU refresh mode and the A2 refresh mode at will.
Generally, the electronic ink screen generally has 255-level gray scale, and when it is determined that the refresh mode of the data to be displayed is the fast refresh mode, the operating voltage and the gray scale of the electronic ink capsule of each current pixel of the electronic ink screen 30 are driven, and meanwhile, the gray scale parameter of each current pixel of the electronic ink screen 30 is subjected to binarization processing, that is, the gray scale parameter of each current pixel of the electronic ink screen 30 is set to be switched only between 0/1, wherein the display effect with the gray scale parameter of 0/1 is non-black, that is, white, so as to achieve faster display speed.
For example, the preset first threshold may be set to 10 frames per second and the preset second threshold may be set to 25 frames per second.
When the frame rate of the data to be displayed is not more than 10 frames per second, a global refresh mode can be adopted;
when the frame rate of the data to be displayed is more than 10 frames per second and not more than 25 frames per second, a local refreshing mode can be adopted;
when the frame rate of the data to be displayed is greater than 25 frames per second, a fast refresh mode may be employed.
As can be seen from the foregoing technical solutions, in the embodiments of the present application, the refresh mode of the data to be displayed may be determined according to the frame rate of the data to be displayed, so as to better display the data. The display layering sense and the flicker sense of the data to be displayed can be effectively reduced, and the display speed and the display quality of the electronic ink screen 30 can be improved.
As can be seen from the above description, when the display instruction includes data to be displayed, after determining the refresh mode of the data to be displayed, the FPGA10 may control the operating voltage of the electronic ink screen 30 to display the data to be displayed based on the refresh mode of the data to be displayed, and the process may include:
the FPGA10 applies different operating voltages to the electronic ink bags of the pixels of the electronic ink screen 30 for displaying the data to be displayed based on the refresh mode of the data to be displayed, so as to display the data to be displayed.
Specifically, the operating voltages of 30 pixels on the electronic ink screen are different due to different refresh modes. Therefore, after determining the refresh mode of the data to be displayed, the FPGA10 may apply different operating voltages to the electronic ink capsules of each pixel point of the electronic ink screen 30 for displaying the data to be displayed based on the refresh mode of the data to be displayed, so as to display the data to be displayed.
As can be seen from the above technical solutions, the FPGA10 may apply different operating voltages to the electronic ink bags of the pixels of the electronic ink screen 30 for displaying the data to be displayed based on the refresh mode of the data to be displayed, so as to display the data to be displayed. The display layering sense and the flicker sense of the data to be displayed can be effectively reduced, and the display speed and the display quality of the electronic ink screen 30 can be improved.
As can be seen from the above description, when the display instruction includes data to be displayed, the FPGA10 according to the embodiment of the present application may further determine an update policy of the data to be displayed based on pixel data difference information between current frame picture data displayed in the electronic ink screen at the current moment and next frame picture data of the current frame picture data in the data to be displayed, and control an operating voltage of the electronic ink screen 30, so as to display the data to be displayed according to the update policy.
The process is described next and may include the following steps:
step S11, the FPGA10 determines the current frame image data displayed in the electronic ink screen at the current time and the next frame image data of the current frame image data in the data to be displayed.
Specifically, after receiving the data to be displayed sent by the controller 20, the FPGA10 may determine the current frame picture data displayed in the electronic ink screen 30 at the current time and the next frame picture data of the current frame picture data in the data to be displayed, so that the difference rate between the pixel data of the current frame picture data and the pixel data of the next frame picture data may be determined according to the current frame picture data displayed in the electronic ink screen 30 at the current time and the next frame picture data of the current frame picture data in the data to be displayed.
Step S12, the FPGA10 determines a difference rate of pixel data of the current frame image data and the next frame image data.
Specifically, after the FPGA10 determines the current frame of image data displayed in the electronic ink screen 30 at the current moment and the next frame of image data of the current frame of image data in the data to be displayed, the difference rate between the pixel data of the current frame of image data and the pixel data of the next frame of image data may be further determined. So that the update strategy of the data to be displayed can be determined according to the difference rate of the pixel data of the current frame picture data and the next frame picture data.
The determining process of the difference rate of the pixel data of the current frame of picture data and the next frame of picture data may be to calculate the total pixel number of the electronic ink screen according to the width and the height of the electronic ink screen, after the total pixel number of the electronic ink screen is obtained, compare the current frame of picture data of the data to be displayed with each pixel of the next frame of picture data at the same pixel point position, and when it is detected that the difference exists between the current frame of picture data of the data to be displayed and the pixel data of the next frame of picture data at the same pixel point position, determine the difference rate of the pixel data of the current frame of picture data and the next frame of picture data according to the pixel comparison result.
In the practical application process, the parallel computing capability of the FPGA10 can be utilized to compare the difference data of each pixel point in the electronic ink screen 30 at one time in the same time, so as to determine the difference rate of the pixel data of the current frame of image data and the next frame of image data at the highest speed.
Step S13, the FPGA10 determines whether the difference rate is smaller than a preset third threshold.
Specifically, after determining the difference rate between the pixel data of the current frame picture data and the pixel data of the next frame picture data, the FPGA10 may further determine whether the difference rate is smaller than a preset third threshold. If the difference rate is greater than or equal to a preset third threshold, step S14 may be executed; if the difference rate is smaller than the preset third threshold, step S15 may be executed.
Wherein the preset third threshold may be set with reference to the total number of pixels of the electronic ink screen 30.
For example, the preset third threshold may be set to 3%, that is, when the difference rate between the pixel data of the current frame picture data and the pixel data of the next frame picture data is less than 3%, the current frame picture data of the electronic ink screen 30 may be considered to have a small change, and the next frame picture data does not need to be updated to the electronic ink screen 30.
Step S14, the FPGA10 updates the current frame image data displayed in the electronic ink screen 30 to the next frame image data, and controls the operating voltage of the electronic ink screen 30 to display the data to be displayed.
Specifically, if the difference rate is greater than or equal to a preset third threshold, it indicates that the difference between the pixel data of the current frame of image data in the electronic ink screen 30 and the pixel data of the next frame of image data is large, the data change is large, and the current frame of image data in the electronic ink screen 30 needs to be updated, and then the FPGA10 may update the current frame of image data displayed in the electronic ink screen 30 to the next frame of image data, and control the operating voltage of each pixel point of the electronic ink screen 30 to display the data to be displayed.
Step S15, the FPGA10 starts a timer, stops the process of determining the difference rate before the timer finishes timing, and executes a step of updating the current frame image data displayed in the electronic ink screen 30 to the next frame image data and controlling the operating voltage of the electronic ink screen 30 to display the data to be displayed after the timer finishes timing.
Specifically, if the difference rate is smaller than the preset third threshold, it indicates that the difference between the pixel data of the current frame of image data and the pixel data of the next frame of image data in the electronic ink screen 30 is small, the data change is small, and the updating of the current frame of image data of the electronic ink screen 30 may be suspended. The FPGA10 may start a timer and stop the process of determining the rate of difference before the timer expires.
It is understood that after the FPGA10 starts the timer, before the timer expires, the FPGA10 does not calculate the difference rate between the pixel data of the current frame picture data and the pixel data of the next frame picture data of the electronic ink screen 30 any more, and suspends the updating of the current frame picture data displayed in the electronic ink screen 30 to the next frame picture data. The calculation pressure of the device is effectively reduced, and the driving time for the electronic ink screen 30 to display the data to be displayed is reduced.
Particularly, in order to ensure the display effect of the data to be displayed, the FPGA10 may further continue to update the current frame of picture data displayed in the electronic ink screen 30 to the next frame of picture data after the timer finishes counting, and control the operating voltage of the electronic ink screen 30 to display the data to be displayed.
As can be seen from the above technical solution, in the embodiment of the application, the FPGA10 may determine an update policy of the data to be displayed based on pixel data difference information between current frame picture data displayed in the electronic ink screen 30 at the current moment and next frame picture data of the current frame picture data in the data to be displayed, and control an operating voltage of an electronic ink sac at each pixel point of the electronic ink screen 30, so as to display the data to be displayed according to the update policy. The driving time of the electronic ink screen 30 can be effectively reduced, and the processing speed of data display can be improved.
In an actual application process, when the display instruction received by the controller 20 includes the display attribute information of the data to be displayed but does not include the data to be displayed, the FPGA10 may be further configured to generate target data to be displayed corresponding to the display attribute information of the data to be displayed based on the display instruction.
Specifically, when the display instruction includes the display attribute information of the data to be displayed but does not include the data to be displayed, the FPGA10 may generate the target data to be displayed corresponding to the display attribute information of the data to be displayed according to the attribute information, such as the target display text, the display color, and the like, of the data to be displayed in the display command.
For example, in the operation process of the device, when the FPGA10 receives a display instruction including display attribute information of data to be displayed but not including the data to be displayed, the display attribute information in the display instruction may be read, and may further switch to enter a handwriting mode, and simultaneously send parameters of the handwriting mode to the electronic ink screen 30, where the parameters may include but are not limited to: pen width, pen touch color, pen touch type; the handwriting input command of the user may be collected, the input path point coordinates of the user may be combined with the obtained designated handwriting parameters to construct a handwriting trajectory path corresponding to the handwriting input command of the user, and the handwriting trajectory path may be converted into data to be displayed and stored in a register, so as to be sent to the electronic ink screen 30 to display the constructed data to be displayed.
For example, taking an example that a display instruction is a line with a line width of 3 pixels and a color of black drawn at a position from (0,0) to (0, 50) on a screen, a process of generating target data to be displayed corresponding to display attribute information of the data to be displayed based on the display instruction may include the following steps:
(1) Switching the input mode to a handwriting input mode;
(2) Read the required parameters from the display command: starting point, end point, line width and color and line type;
(3) According to the length and the width of the electronic ink screen 30, single-frame display data is constructed according to the parameters.
For example, if the size of the electronic ink screen 30 is 1920 × 1080, the original position of the electronic ink screen 30 may be set as a starting point, the vertical direction is 3 lines ahead, 50 black pixels are filled in the horizontal direction, and the rest of the pixels are filled as transparent pixels.
When the display instruction received by the FPGA10 includes both the data to be displayed and the display attribute information of the display data to be constructed, the display instruction can be further switched into a handwriting mode, and then the handwriting display instruction can be converted into the data a to be displayed; and comparing the data B to be displayed included in the display instruction with the data A to be displayed pixel by pixel, and processing the overlapped part of the two groups of display data of the data A to be displayed and the data B to be displayed to avoid invalid operation.
Here, since the input mode has been currently switched to the handwriting input mode, the priority of the data a to be displayed may be set higher than that of the data B to be displayed.
For example, when the transparency of the data a to be displayed is 0, the pixel data of the corresponding pixel point in the data B to be displayed may be replaced with the pixel data of the corresponding pixel point in the data a to be displayed; when the transparency of the data a to be displayed is not 0, the pixel data of the corresponding pixel point of the data a to be displayed and the pixel data of the corresponding pixel point of the data B to be displayed can be subjected to fusion calculation. And after comparison operation, data C to be finally displayed on the electronic ink screen can be obtained.
As can be seen from the foregoing technical solutions, in the present application, when the display instruction received by the controller 20 includes the display attribute information of the data to be displayed but does not include the data to be displayed, the FPGA10 may be further configured to generate, based on the display instruction, target data to be displayed corresponding to the display attribute information of the data to be displayed. So that the data to be displayed can be efficiently generated and processed in accordance with the display instruction.
After the FPGA10 generates the target data, the FPGA10 may further control an operating voltage of the electronic ink screen 30 to display the target data based on a frame rate of the target data and a refresh mode of the target data.
Next, a process of controlling the operating voltage of the electronic ink screen 30 to display the target data by the FPGA10 based on the frame rate of the target data and the refresh mode of the target data will be described in detail, which may include the following steps:
step S21, the FPGA10 calculates a frame rate of the target data.
Step S22, the FPGA10 determines a refresh mode of the target data based on the frame rate of the target data.
Step S23, the FPGA10 controls the operating voltage of the electronic ink screen 30 based on the refresh mode of the target to display the target data.
Further optionally, after the FPGA10 generates the target data, the FPGA10 may further determine an update policy of the target data based on pixel data difference information between current frame picture data displayed in the electronic ink screen at the current moment and next frame picture data of the current frame picture data in the target data, and control an operating voltage of the electronic ink screen 30 to display the target data according to the update policy.
As can be seen from the above technical solution, in the present application, when the display instruction includes the display attribute information of the data to be displayed but does not include the data to be displayed, the FPGA10 may be used to generate the target data to be displayed corresponding to the display attribute information of the data to be displayed, and according to the frame rate of the target data or the pixel data difference information between the current frame picture data displayed in the electronic ink screen 30 at the current time and the next frame picture data of the current frame picture data in the target data, the operating voltage of the electronic ink sac of each pixel point of the electronic ink screen 30 is controlled to display the target data. The updating strategy of the data to be displayed is determined according to the pixel data difference information between the current frame picture data displayed in the electronic ink screen at the current moment and the next frame picture data of the current frame picture data in the data to be displayed, different updating strategies can be determined according to different difference conditions between the current frame picture data and the next frame picture data of the current frame picture data in the data to be displayed, the driving and calculating time of equipment can be effectively reduced, and the driving speed of the electronic ink screen and the data display efficiency are also improved.
Next, from the perspective of the FPGA10, two implementation manners of the optional data display method provided in the embodiment of the present application are introduced:
in the first kind of the method, the first,
step S201, receiving a display instruction sent by the controller.
Specifically, the FPGA10 may receive display instructions sent by the controller 20.
Step S202, judging whether the display instruction comprises data to be displayed.
Specifically, after receiving the display instruction sent by the controller 20, the FPGA10 may further determine whether the display instruction includes data to be displayed, and if so, execute step S203.
Step S203, calculating a frame rate of the data to be displayed.
Specifically, after determining that the data to be displayed includes data to be displayed, the FPGA10 may calculate a frame rate of the data to be displayed. After the frame rate of the data to be displayed is determined, the refresh mode of the data displayed on the electronic ink screen 30 can be dynamically switched according to the frame rate of the data to be displayed; an interface capable of dynamically switching between a high power consumption mode and a low power consumption mode is also supported in connection; the current display scene is detected or the corresponding power consumption mode is switched according to the setting of a user, so that the computing capability of the equipment and the data display speed are improved.
The frame rate calculation mode of the data to be displayed is as follows: the frame rate of the data to be displayed is equal to the total frame number of the data to be displayed divided by the display time of the data to be displayed, and the unit of the frame rate is frames per second.
After the data to be displayed is obtained, the frame rate of the data to be displayed can be obtained by dividing the total frame number of the data to be displayed by the total display time of the data to be displayed. For use in determining a refresh mode for data to be displayed.
And step S204, determining the refresh mode of the data to be displayed based on the frame rate.
Specifically, the maximum frame rate supported by each refresh mode is typically provided by the supplier of the electronic ink screen. Accordingly, after determining the frame rate of the data to be displayed, the refresh mode of the data to be displayed may be determined based on the frame rate of the data to be displayed.
The above descriptions of steps S101 to S104 may be referred to for determining the refresh mode of the data to be displayed based on the frame rate of the data to be displayed.
Step S205, based on the refresh mode, controlling an operating voltage of the electronic ink screen for displaying the data to be displayed to display the data to be displayed.
Specifically, as can be seen from the above description, the electronic ink screen generally applies different operating voltages to the TFTs to generate different magnetic fields, so as to control the charged pigment particles in the electronic ink capsules to be adsorbed at the bottom or top of the capsules, thereby achieving the effect of displaying different colors. The data display effect corresponding to each refresh mode is different, and the operating voltage applied to the electronic ink bag of each pixel of the electronic ink screen 30 for displaying data is different according to the different display effects; different operating voltages are applied to the electronic ink screen to generate different magnetic fields, so that the charged pigment particles in the electronic ink bag are controlled to be adsorbed at the bottom or the top of the capsule, and different display effects are achieved. Therefore, after the refresh mode of the data to be displayed is determined, the operating voltage of the electronic ink screen 30 for displaying the data to be displayed may be controlled according to the refresh mode of the data to be displayed to display the data to be displayed.
In the second type of the above-mentioned systems,
in step S201, a display instruction is received.
Step S202, judging whether the display instruction comprises data to be displayed.
Specifically, if the display instruction is determined to include the data to be displayed, step S206 is executed.
Step S206, determining an update policy of the data to be displayed based on pixel data difference information between the current frame of image data displayed in the electronic ink screen at the current moment and the next frame of image data of the current frame of image data in the data to be displayed.
Step S207, controlling an operating voltage of the electronic ink screen for displaying the data to be displayed to display the data to be displayed according to the update policy.
It can be seen from the above technical solution that, since the operating voltage and the path for adjusting the gray scale of the electronic ink screen corresponding to different refresh modes are different, the driving speed thereof will also be different. Therefore, according to the refresh mode of the data to be displayed, the operation voltage of the electronic ink bag of each pixel point of the electronic ink screen for displaying the data to be displayed is controlled, the defect that the electronic ink screen is driven by adopting a fixed mode is overcome, the operation voltage in the electronic ink bag of each pixel point in the electronic ink screen can be determined efficiently according to the refresh mode of the data to be displayed, the driving time of the electronic ink screen is shortened, and the driving speed of the electronic ink screen is improved.
Further, due to the conventional display architecture, the electronic ink screen is driven depending on the EPDC display controller, and the corresponding refresh mode can be pre-selected only according to the user's input or the system according to the possible display contents. The data display method can be realized by adopting the FPGA integrated circuit module. The FPGA10 has strong operation performance, and can calculate the frame rate of the data to be displayed in a very short time and dynamically change the corresponding refresh mode according to the frame rate of the data to be displayed. Compared with the EPDC display controller for controlling to drive the electronic ink screen, the FPGA10 is adopted to be better compatible with the electronic ink screen and the controller of the interfaces of different types, and can combine the data to be displayed to carry out various transformation processing according to the different input data, and directly transmit the processed data to be displayed to the electronic ink screen, thereby reducing the working pressure of the equipment mainboard, and the electronic ink screen equipment can provide better display effect while improving the operational capability.
Secondly, the updating strategy of the data to be displayed can be determined according to the pixel data difference information between the current frame picture data displayed in the electronic ink screen at the current moment and the next frame picture data of the current frame picture data in the data to be displayed, different updating strategies can be determined according to different difference conditions between the current frame picture data and the next frame picture data of the current frame picture data in the data to be displayed, the driving and calculating time of equipment can be effectively reduced, and the driving speed of the electronic ink screen and the data display efficiency are also improved.
As can be seen from the above description, in the embodiment of the present application, the refresh mode of the data to be displayed may be determined based on the frame rate of the data to be displayed. Next, the process is described, which may include the following steps:
step S301, judging the size relationship between the frame rate of the data to be displayed and a preset first threshold and a preset second threshold, wherein the preset first threshold is smaller than the preset second threshold.
Step S302, if the frame rate of the data to be displayed is not greater than a preset first threshold, determining that the refresh mode of the data to be displayed is a global refresh mode.
Step S303, if the frame rate of the data to be displayed exceeds a preset first threshold and is not greater than a preset second threshold, determining that the refresh mode of the data to be displayed is a local refresh mode.
Step S304, if the frame rate of the data to be displayed exceeds a preset second threshold, determining that the refresh mode of the data to be displayed is a fast refresh mode.
The steps S301 to S304 can refer to the descriptions of the steps S101 to S104, and are not described herein again.
As can be seen from the foregoing technical solutions, in the embodiments of the present application, the refresh mode of the data to be displayed may be determined according to the frame rate of the data to be displayed, so as to better display the data. The display layering sense and the flicker sense of the data to be displayed can be effectively reduced, and the display speed and the display quality of the electronic ink screen 30 can be improved.
The data display device provided by the embodiment of the present application is described below, and the data display device described below and the data display method described above may be referred to correspondingly.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a data display device according to an embodiment of the present disclosure.
As shown in fig. 3, the data display apparatus may include:
an instruction receiving unit 101, configured to receive a display instruction sent by the controller;
the first voltage control unit 102 is configured to calculate a frame rate of data to be displayed when the display instruction includes the data to be displayed, and determine a refresh mode of the data to be displayed based on the frame rate; controlling the operating voltage of an electronic ink screen used for displaying the data to be displayed to display the data to be displayed based on the refreshing mode;
a second voltage control unit 103, configured to, when the display instruction includes data to be displayed, determine an update policy of the data to be displayed based on pixel data difference information between current frame picture data displayed in the electronic ink screen at a current moment and next frame picture data of the current frame picture data in the data to be displayed, and control an operating voltage of the electronic ink screen used to display the data to be displayed so as to display the data to be displayed according to the update policy.
As can be seen from the foregoing technical solutions, the apparatus according to the embodiment of the present application may utilize the instruction receiving unit 101 to receive a display instruction; when the display instruction includes data to be displayed, and when the display instruction includes data to be displayed, a first voltage control unit may be used to calculate a frame rate of the data to be displayed, and determine a refresh mode of the data to be displayed based on the frame rate; and controlling the operating voltage of the electronic ink screen for displaying the data to be displayed to display the data to be displayed based on the refreshing mode. Besides, the second voltage control unit 103 may be further configured to determine an update policy of the data to be displayed based on pixel data difference information between current frame picture data displayed in the electronic ink screen at the current moment and next frame picture data of the current frame picture data in the data to be displayed, and control an operating voltage of the electronic ink screen for displaying the data to be displayed to display the data to be displayed according to the update policy.
Because the operating voltage and the path for adjusting the gray scale of the electronic ink screen corresponding to different refresh modes are different, and the operating voltage and the path for adjusting the gray scale of the electronic ink screen are different, and the driving speed of the electronic ink screen is also different, the operating voltage of the electronic ink bag of each pixel point of the electronic ink screen for displaying the data to be displayed is controlled according to the refresh mode of the data to be displayed, the defect that the electronic ink screen is driven by adopting a fixed mode is overcome, the operating voltage in the electronic ink bag of each pixel point in the electronic ink screen can be efficiently determined according to the refresh mode of the data to be displayed, the driving time of the electronic ink screen is shortened, and the driving speed of the electronic ink screen is improved. And secondly, determining an updating strategy of the data to be displayed according to pixel data difference information between the current frame picture data displayed in the electronic ink screen at the current moment and the next frame picture data of the current frame picture data in the data to be displayed, and determining different updating strategies according to different difference conditions between the current frame picture data and the next frame picture data of the current frame picture data in the data to be displayed, so that the driving and calculating time of equipment can be effectively reduced, and the driving speed of the electronic ink screen and the data display efficiency are improved.
Further optionally, the determining, by the first voltage control unit 102, an execution process of a refresh mode of the data to be displayed based on the frame rate may include:
judging the size relation between the frame rate of the data to be displayed and a preset first threshold value and a preset second threshold value, wherein the preset first threshold value is smaller than the preset second threshold value;
if the frame rate of the data to be displayed is not greater than a preset first threshold, determining that the refresh mode of the data to be displayed is a global refresh mode;
if the frame rate of the data to be displayed exceeds a preset first threshold and is not greater than a preset second threshold, determining that the refresh mode of the data to be displayed is a local refresh mode;
and if the frame rate of the data to be displayed exceeds a preset second threshold, determining that the refresh mode of the data to be displayed is a quick refresh mode.
Further optionally, the executing process of the first voltage control unit 102 controlling the operating voltage of the electronic ink screen to display the data to be displayed based on the refresh mode may include:
the FPGA10 applies different operating voltages to the electronic ink bags of the respective pixel points of the electronic ink screen for displaying the data to be displayed based on the refresh mode of the data to be displayed, so as to display the data to be displayed.
Further optionally, the second voltage control unit 103 determines an update policy of the data to be displayed based on pixel data difference information between a current frame of picture data displayed in the electronic ink screen at the current moment and a next frame of picture data of the current frame of picture data in the data to be displayed, and controls the operating voltage of the electronic ink screen to display the execution process of the data to be displayed according to the update policy, and may include:
determining current frame picture data displayed in the electronic ink screen at the current moment and next frame picture data of the current frame picture data in the data to be displayed;
determining a difference rate of pixel data of the current frame picture data and the next frame picture data;
judging whether the difference rate is smaller than a preset third threshold value or not;
if the difference rate is greater than or equal to a preset third threshold, updating the current frame of picture data displayed in the electronic ink screen into the next frame of picture data, and controlling the operating voltage of the electronic ink screen to display the data to be displayed;
and if the difference rate is smaller than a preset third threshold value, starting a timer, stopping the process of determining the difference rate before the timer finishes timing, and after the timer finishes timing, updating the current frame image data displayed in the electronic ink screen into the next frame image data, and controlling the operating voltage of the electronic ink screen to display the data to be displayed.
Further optionally, the data display device may further include:
the data generating unit is used for generating target data to be displayed corresponding to the display attribute information of the data to be displayed based on the display instruction when the display instruction comprises the display attribute information of the data to be displayed but does not comprise the data to be displayed;
the third voltage control unit is used for calculating the frame rate of the target data and determining the refresh mode of the target data based on the frame rate of the target data; controlling an operating voltage of the electronic ink screen to display the target data based on a refresh mode of the target;
or the like, or, alternatively,
the electronic ink screen updating method comprises the steps of determining an updating strategy of target data based on pixel data difference information between current frame picture data displayed in the electronic ink screen at the current moment and next frame picture data of the current frame picture data in the target data, and controlling operating voltage of the electronic ink screen to display the target data according to the updating strategy.
The specific processing flow of each unit included in the data display device may refer to the related description of the data display method, and is not described herein again.
The data display device provided by the embodiment of the application can be applied to an electronic ink screen reader. Optionally, fig. 4 shows a block diagram of a hardware structure of a data display device, and referring to fig. 4, the hardware structure of the data display device may include: at least one processor 1, at least one communication interface 2, at least one memory 3 and at least one communication bus 4.
In the embodiment of the present application, the number of the processor 1, the communication interface 2, the memory 3, and the communication bus 4 is at least one, and the processor 1, the communication interface 2, and the memory 3 complete mutual communication through the communication bus 4.
The processor 1 may be a central processing unit CPU, or an Application Specific Integrated Circuit ASIC (Application Specific Integrated Circuit), or one or more Integrated circuits configured to implement the embodiments of the present Application, etc.;
the memory 3 may include a high-speed RAM memory, and may further include a non-volatile memory (non-volatile memory) or the like, such as at least one disk memory;
wherein the memory stores a program and the processor can call the program stored in the memory, the program for: and realizing each processing flow in the terminal data display scheme.
Embodiments of the present application further provide a readable storage medium, where the storage medium may store a program adapted to be executed by a processor, where the program is configured to: and realizing each processing flow of the terminal in the data display scheme.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. The various embodiments may be combined with each other. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. A data display system, comprising:
a programmable logic device FPGA, a controller and an electronic ink screen, wherein the FPGA is respectively connected with the controller and the electronic ink screen,
the controller is used for receiving a display instruction sent by a user and sending the display instruction to the FPGA;
the FPGA is used for calculating the frame rate of the data to be displayed when the display instruction comprises the data to be displayed, and determining the refresh mode of the data to be displayed based on the frame rate; controlling the operating voltage of the electronic ink screen to display the data to be displayed based on the refreshing mode; determining current frame picture data displayed in the electronic ink screen at the current moment and next frame picture data of the current frame picture data in the data to be displayed; determining a difference rate of pixel data of the current frame picture data and the next frame picture data; judging whether the difference rate is smaller than a preset third threshold value or not; if the difference rate is greater than or equal to a preset third threshold, updating the current frame of picture data displayed in the electronic ink screen into the next frame of picture data, and controlling the operating voltage of the electronic ink screen to display the data to be displayed; and if the difference rate is smaller than a preset third threshold value, starting a timer, stopping the process of determining the difference rate before the timer finishes timing, and after the timer finishes timing, updating the current frame image data displayed in the electronic ink screen into the next frame image data, and controlling the operating voltage of the electronic ink screen to display the data to be displayed.
2. The data display system of claim 1, wherein the FPGA is configured to determine a refresh mode of the data to be displayed based on the frame rate, and comprises:
judging the size relation between the frame rate of the data to be displayed and a preset first threshold value and a preset second threshold value, wherein the preset first threshold value is smaller than the preset second threshold value;
if the frame rate of the data to be displayed is not greater than a preset first threshold, determining that the refresh mode of the data to be displayed is a global refresh mode;
if the frame rate of the data to be displayed exceeds a preset first threshold and is not greater than a preset second threshold, determining that the refresh mode of the data to be displayed is a local refresh mode;
and if the frame rate of the data to be displayed exceeds a preset second threshold, determining that the refresh mode of the data to be displayed is a quick refresh mode.
3. The data display system of claim 1, wherein the FPGA controls the operating voltage of the electronic ink screen to display the data to be displayed based on the refresh mode, comprising:
and the FPGA applies different operating voltages to the electronic ink bag of each pixel point of the electronic ink screen for displaying the data to be displayed based on the refreshing mode of the data to be displayed so as to display the data to be displayed.
4. The data display system according to any one of claims 1 to 3, wherein if the display instruction includes display attribute information of the data to be displayed but does not include the data to be displayed, the FPGA is further configured to generate target data to be displayed corresponding to the display attribute information of the data to be displayed based on the display instruction;
calculating the frame rate of the target data, and determining the refresh mode of the target data based on the frame rate of the target data; controlling an operating voltage of the electronic ink screen to display the target data based on a refresh mode of the target;
or the like, or, alternatively,
and determining an updating strategy of the target data based on pixel data difference information between the current frame picture data displayed in the electronic ink screen at the current moment and the next frame picture data of the current frame picture data in the target data, and controlling the operating voltage of the electronic ink screen to display the target data according to the updating strategy.
5. A data display method is characterized in that the method is applied to an FPGA in a data display system, the system also comprises a controller and an electronic ink screen, the FPGA is respectively connected with the controller and the electronic ink screen, and the method comprises the following steps:
receiving a display instruction sent by the controller;
if the display instruction comprises data to be displayed, calculating the frame rate of the data to be displayed, and determining the refresh mode of the data to be displayed based on the frame rate; controlling the operating voltage of an electronic ink screen used for displaying the data to be displayed to display the data to be displayed based on the refreshing mode; determining current frame picture data displayed in the electronic ink screen at the current moment and next frame picture data of the current frame picture data in the data to be displayed; determining the difference rate of the pixel data of the current frame image data and the next frame image data; judging whether the difference rate is smaller than a preset third threshold value or not; if the difference rate is greater than or equal to a preset third threshold, updating the current frame of picture data displayed in the electronic ink screen into the next frame of picture data, and controlling the operating voltage of the electronic ink screen to display the data to be displayed; and if the difference rate is smaller than a preset third threshold value, starting a timer, stopping the process of determining the difference rate before the timer finishes timing, and after the timer finishes timing, updating the current frame of picture data displayed in the electronic ink screen into the next frame of picture data, and controlling the operating voltage of the electronic ink screen to display the data to be displayed.
6. The data display method of claim 5, wherein the determining the refresh mode of the data to be displayed based on the frame rate comprises:
judging the size relation between the frame rate of the data to be displayed and a preset first threshold value and a preset second threshold value, wherein the preset first threshold value is smaller than the preset second threshold value;
if the frame rate of the data to be displayed is not greater than a preset first threshold, determining that the refresh mode of the data to be displayed is a global refresh mode;
if the frame rate of the data to be displayed exceeds a preset first threshold and is not greater than a preset second threshold, determining that the refresh mode of the data to be displayed is a local refresh mode;
and if the frame rate of the data to be displayed exceeds a preset second threshold, determining that the refresh mode of the data to be displayed is a quick refresh mode.
7. The utility model provides a data display device which characterized in that, is applied to the FPGA in the data display system, and this system still includes controller and electron ink screen, FPGA respectively with the controller reaches electron ink screen connection, the device includes:
the instruction receiving unit is used for receiving a display instruction sent by the controller;
the first voltage control unit is used for calculating the frame rate of the data to be displayed when the display instruction comprises the data to be displayed, and determining the refresh mode of the data to be displayed based on the frame rate; controlling the operating voltage of an electronic ink screen used for displaying the data to be displayed to display the data to be displayed based on the refreshing mode; determining current frame picture data displayed in the electronic ink screen at the current moment and next frame picture data of the current frame picture data in the data to be displayed; determining a difference rate of pixel data of the current frame picture data and the next frame picture data; judging whether the difference rate is smaller than a preset third threshold value or not; if the difference rate is greater than or equal to a preset third threshold, updating the current frame of picture data displayed in the electronic ink screen into the next frame of picture data, and controlling the operating voltage of the electronic ink screen to display the data to be displayed; and if the difference rate is smaller than a preset third threshold value, starting a timer, stopping the process of determining the difference rate before the timer finishes timing, and after the timer finishes timing, updating the current frame of picture data displayed in the electronic ink screen into the next frame of picture data, and controlling the operating voltage of the electronic ink screen to display the data to be displayed.
8. A data display device, comprising: one or more processors, and a memory;
the memory has stored therein computer readable instructions which, when executed by the one or more processors, carry out the steps of the data display system of any one of claims 1 to 4 and the steps of the data display method of claim 5 or 6.
9. A readable storage medium, characterized by: the readable storage medium has stored therein computer-readable instructions, which, when executed by one or more processors, cause the one or more processors to carry out the steps of the data display method according to claim 5 or 6.
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