CN112965678A - Display, device, storage medium and method based on electronic ink screen - Google Patents
Display, device, storage medium and method based on electronic ink screen Download PDFInfo
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- CN112965678A CN112965678A CN202110289767.0A CN202110289767A CN112965678A CN 112965678 A CN112965678 A CN 112965678A CN 202110289767 A CN202110289767 A CN 202110289767A CN 112965678 A CN112965678 A CN 112965678A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1407—General aspects irrespective of display type, e.g. determination of decimal point position, display with fixed or driving decimal point, suppression of non-significant zeros
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T11/00—2D [Two Dimensional] image generation
- G06T11/001—Texturing; Colouring; Generation of texture or colour
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T11/00—2D [Two Dimensional] image generation
- G06T11/60—Editing figures and text; Combining figures or text
Abstract
The embodiment of the application discloses a display, a device, a storage medium and a method based on an electronic ink screen. According to the technical scheme, the original picture data are read from the video input end, then the gray scale conversion is carried out to obtain the data to be displayed, the data to be displayed are added into the gray scale picture queue, the data to be displayed, which need to be processed, in the gray scale picture queue are read, the data to be displayed are converted into the target picture data after the image processing, the target picture data are further converted into the target waveform data needed by the driving of the electronic ink screen and are displayed on the electronic ink screen, the screen refreshing speed is effectively improved, the display speed of the picture data is improved, the display quality is effectively guaranteed, and the user experience is optimized.
Description
Technical Field
The embodiment of the application relates to the technical field of display, in particular to a display, a device, a storage medium and a method based on an electronic ink screen.
Background
The electronic ink screen technology utilizes the electrophoresis technology to realize the display of pictures, and the display effect of the screen is very close to that of the traditional paper, so the screen is also called as 'electronic paper'.
Electronic ink is generally made of a thin film composed of a plurality of microcapsules, in which pigment particles having different charges are suspended, and in an initial state, when an electric field in a certain direction is applied, the corresponding pigment particles are pushed to the top, and the microcapsules show different colors, and the microcapsules having different colors constitute various characters and patterns.
However, due to the characteristics of the electronic ink screen, the screen refresh speed is slow, and the electronic ink screen is generally used for reading scenes with more static pictures, and is difficult to meet the requirement of devices such as computers and the like on the response speed of the display.
Disclosure of Invention
The embodiment of the application provides a display, a device, a storage medium and a method based on an electronic ink screen, so as to improve the display speed of picture data.
In a first aspect, an embodiment of the present application provides a display method based on an electronic ink screen, including:
acquiring original picture data provided by a video input end, carrying out gray level conversion on the original picture data to obtain data to be displayed, and adding the data to be displayed into a gray level picture queue;
acquiring the data to be displayed from the gray scale picture queue, carrying out image processing on the display data to obtain target picture data, and converting the target picture data into target waveform data required by driving of an electronic ink screen;
and driving the electronic ink screen to display the picture according to the target waveform data.
Further, the acquiring original picture data provided by a video input end, performing gray scale conversion on the original picture data to obtain data to be displayed, and adding the data to be displayed into a gray scale picture queue includes:
acquiring original picture data provided by a video input end in real time according to a set or dynamically determined picture extraction frequency;
and carrying out graying processing on the original picture data so as to convert the original picture data into data to be displayed and adding the data to be displayed into a gray scale picture queue.
Further, the image processing the display data to obtain target picture data includes:
and converting the data to be displayed through an image processing algorithm so as to convert the data to be displayed into target picture data.
Further, the image processing algorithm is determined based on a screen refresh mode of the electronic ink screen, and the refresh time corresponding to the screen refresh mode is within 250 ms.
Further, the driving the electronic ink screen to display the image according to the target waveform data includes:
and sending the target waveform data to a time sequence control circuit, and driving the electronic ink screen to display a picture according to the target waveform data through the time sequence control circuit and a power supply control circuit, wherein the time sequence control circuit is connected to the electronic ink screen, and the power supply control circuit is connected to the time sequence control circuit and the electronic ink screen.
In a second aspect, an embodiment of the present application provides a display device based on an electronic ink screen, including a grayscale conversion module, a target conversion module, and a picture display module, where:
the gray scale conversion module is used for acquiring original picture data provided by a video input end, carrying out gray scale conversion on the original picture data to obtain data to be displayed and adding the data to be displayed into a gray scale picture queue;
the target conversion module is used for acquiring the data to be displayed from the gray scale picture queue, carrying out image processing on the display data to obtain target picture data and converting the target picture data into target waveform data required by the driving of the electronic ink screen;
and the picture display module is used for driving the electronic ink screen to display pictures according to the target waveform data.
Further, the grayscale conversion module is specifically configured to:
acquiring original picture data provided by a video input end in real time according to a set or dynamically determined picture extraction frequency;
and carrying out graying processing on the original picture data so as to convert the original picture data into data to be displayed and adding the data to be displayed into a gray scale picture queue.
Further, when the target conversion module performs image processing on the display data to obtain target picture data, the method specifically includes:
and converting the data to be displayed through an image processing algorithm so as to convert the data to be displayed into target picture data.
Further, the image processing algorithm is determined based on a screen refresh mode of the electronic ink screen, and the refresh time corresponding to the screen refresh mode is within 250 ms.
Further, the screen display module is specifically configured to:
and sending the target waveform data to a time sequence control circuit, and driving the electronic ink screen to display a picture according to the target waveform data through the time sequence control circuit and a power supply control circuit, wherein the time sequence control circuit is connected to the electronic ink screen, and the power supply control circuit is connected to the time sequence control circuit and the electronic ink screen.
In a third aspect, an embodiment of the present application provides a display based on an electronic ink screen, including a video data reading module, a color grayscale conversion module, a frame data image conversion and processing module, a grayscale frame queue, a screen display driving module, a timing control circuit, a power control circuit, and an electronic ink screen, where the video data reading module is connected to the color grayscale conversion module, the color grayscale conversion module is connected to the grayscale frame queue, the grayscale frame queue is connected to the screen display driving module, the screen display driving module is connected to the frame data image conversion and processing module and the timing control circuit, the timing control circuit is connected to the electronic ink screen, and the power control circuit is connected to the timing control circuit and the electronic ink screen, where:
the video data reading module is used for acquiring original picture data from a video input end and sending the original picture data to the color gray scale conversion module;
the color gray scale conversion module is used for carrying out gray scale conversion on the original picture data to obtain data to be displayed and adding the data to be displayed into the gray scale picture queue;
the image data image conversion and processing module is used for acquiring the data to be displayed from the screen display driving module, carrying out image processing on the display data to obtain target image data and providing the target image data to the screen display driving module;
the screen display driving module is used for acquiring the data to be displayed from the gray scale picture queue, sending the data to the picture data image conversion and processing module, acquiring target picture data from the picture data image conversion and processing module, and converting the target picture data into target waveform data required by electronic ink screen driving;
and the time sequence control circuit and the power supply control circuit are used for driving the electronic ink screen to display pictures according to the target waveform data.
Further, the video data reading module is specifically configured to obtain, in real time, original picture data provided by a video input end according to a set or dynamically determined picture extraction frequency, and send the original picture data to the color grayscale conversion module.
In a fourth aspect, embodiments of the present application provide a storage medium containing computer-executable instructions for performing the electronic ink screen-based display method according to the first aspect when executed by a computer processor.
According to the method and the device, the original picture data are read from the video input end, then the gray scale conversion is carried out to obtain the data to be displayed, the data to be displayed are added into the gray scale picture queue, the data to be displayed needing to be processed in the gray scale picture queue are read, the data to be displayed are converted into the target picture data after image processing, the target picture data are further converted into the target waveform data needed by the driving of the electronic ink screen and are displayed on the electronic ink screen, the screen refreshing speed is effectively improved, the display speed of the picture data is improved, the display quality is effectively guaranteed, and the user experience is optimized.
Drawings
Fig. 1 is a flowchart of a display method based on an electronic ink screen according to an embodiment of the present disclosure;
FIG. 2 is a flowchart of another electronic ink screen-based display method provided by an embodiment of the present application;
FIG. 3 is a diagram of original picture data provided by an embodiment of the present application;
fig. 4 is a schematic diagram of data to be displayed according to an embodiment of the present application;
FIG. 5 is a diagram of target screen data provided by an embodiment of the present application;
FIG. 6 is a schematic diagram of a display effect of an electronic ink screen in a document editing scene according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a display device based on an electronic ink screen according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a display based on an electronic ink screen according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, specific embodiments of the present application will be described in detail with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some but not all of the relevant portions of the present application are shown in the drawings. Before discussing exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart may describe the operations (or steps) as a sequential process, many of the operations can be performed in parallel, concurrently or simultaneously. In addition, the order of the operations may be re-arranged. The process may be terminated when its operations are completed, but may have additional steps not included in the figure. The processes may correspond to methods, functions, procedures, subroutines, and the like.
Fig. 1 is a flowchart illustrating a display method based on an electronic ink screen according to an embodiment of the present disclosure, where the display method based on an electronic ink screen according to an embodiment of the present disclosure may be performed by an electronic ink screen-based display device, and the electronic ink screen-based display device may be implemented in hardware and/or software and integrated in an electronic ink screen-based display.
The following description will be given taking an example in which the display device based on the electronic ink screen performs the display method based on the electronic ink screen. Referring to fig. 1, the display method based on the electronic ink screen includes:
s101: the method comprises the steps of obtaining original picture data provided by a video input end, carrying out gray scale conversion on the original picture data to obtain data to be displayed, and adding the data to be displayed into a gray scale picture queue.
The original image data provided by the embodiment is provided by a video input terminal, wherein the video input terminal may be a computer, a game machine, a mobile phone, etc., and the original image data provided by the video input terminal is color image data (for example, RGB format data).
For example, after the original picture data provided by the video input terminal is obtained, the original picture data is subjected to gray scale conversion to obtain data to be displayed, which is expressed by gray scale, and the data to be displayed, which is obtained by gray scale conversion, is sequentially added to the gray scale picture queue.
S102: and acquiring the data to be displayed from the gray scale picture queue, carrying out image processing on the display data to obtain target picture data, and converting the target picture data into target waveform data required by driving of the electronic ink screen.
Illustratively, to-be-displayed data to be displayed is acquired from a gray-scale picture queue according to a certain algorithm, and the acquired to-be-displayed data is subjected to image processing to obtain target picture data. The algorithm for acquiring the data to be displayed from the gray scale image queue is not limited in the present application, and the data to be displayed may be acquired from the gray scale image queue according to a set frequency or interval to perform image processing, or all the data to be displayed may be acquired from the gray scale image queue to perform image processing.
The picture data format of the target picture data is determined according to a screen refresh mode of the electronic ink screen, wherein the screen refresh mode can be an A2 refresh mode or a (shorter time) mode supported by other electronic ink screens. Preferably, the refresh time of the screen refresh mode is within 250 ms. Taking the a2 refresh mode as an example, the format of the picture data corresponding to the corresponding target picture data is a black-and-white picture format, and when image processing is performed on the display data, the data to be displayed is processed into the target picture data corresponding to the gray scale level black/white. The gray level of the target picture data is determined according to a specific screen refresh mode.
Further, target picture data is converted into target waveform data required by driving of the electronic ink screen based on a waveform file of the electronic ink screen. It can be understood that the waveform and timing required for displaying pixels on the electronic ink screen, for example, the waveform and timing required for displaying white, are provided in the waveform file, and the target waveform data required for displaying the target picture data on the electronic ink screen can be correspondingly obtained according to the waveform file.
S103: and driving the electronic ink screen to display the picture according to the target waveform data.
Illustratively, according to a screen refreshing mode corresponding to the target data format, performing screen refreshing on the electronic ink screen, and driving the electronic ink screen to perform picture display by the target waveform data. For example, the electronic ink screen is controlled to display the data to be displayed according to the determined screen refreshing mode through the time sequence control circuit and the power supply control circuit.
The method comprises the steps of reading original picture data from a video input end, then carrying out gray scale conversion to obtain data to be displayed, adding the data to be displayed into a gray scale picture queue, reading the data to be displayed needing to be processed in the gray scale picture queue, converting the data to be displayed into target picture data after image processing, further converting the target picture data into target waveform data needed by driving of an electronic ink screen, and displaying the target waveform data on the electronic ink screen. In addition, the scheme firstly carries out gray level processing on the original picture data and then adds the obtained data to be displayed into the gray level picture queue, thereby effectively reducing the size of the cache data in the gray level picture queue and being beneficial to accelerating the subsequent data processing speed.
On the basis of the foregoing embodiment, fig. 2 is a flowchart of another display method based on an electronic ink screen according to an embodiment of the present application, where the display method based on the electronic ink screen is an embodiment of the display method based on the electronic ink screen. Referring to fig. 2, the display method based on the electronic ink screen includes:
s201: and acquiring original picture data provided by the video input end in real time according to the set or dynamically determined picture extraction frequency.
The video input end provided by the embodiment generates video stream data in real time according to original picture data corresponding to a picture required to be displayed, and provides the video stream data to the display device based on the electronic ink screen.
Specifically, the original picture data is extracted from the video stream data provided by the video input end in real time based on the picture extraction frequency set by the display refresh frequency of the electronic ink screen or dynamically determined based on the signal frequency of the video input end.
For the set picture extraction frequency, the original picture data which needs to be processed and displayed can be selected in a mode of extracting the original picture data, the situation that the display response time of the electronic ink screen is too long due to too much picture data which needs to be processed is reduced, and the display effect is optimized.
It is understood that the frame rate may be determined according to the screen refresh mode of the electronic ink screen, or may be dynamically adjusted according to the signal frequency of the video input terminal (i.e., the frame rate is dynamically determined). When the original picture data is extracted from the video input end based on the dynamically determined picture extraction frequency, the picture conversion and processing module (for example, a color gray scale conversion module and a picture data image conversion and processing module provided by a display based on an electronic ink screen) has enough capacity to process more data, for example, when the signal frequency of the video input end is 60Hz, the picture extraction frequency is dynamically set to 60Hz, all data can be processed in the subsequent graying processing of the original picture and format conversion of data to be displayed, and only when the electronic ink screen is finally refreshed, the proper processed picture data can be selected to be refreshed based on the refresh frequency of the electronic ink screen.
For example, assuming that the update frequency of the original picture data provided by the video input end is 60Hz, the picture extraction frequency can be set to 60 frames/second at most, and after the original picture data is processed, assuming that the refresh time corresponding to the screen refresh mode is less than 0.25 second (for example, the refresh time corresponding to the a2 refresh mode is within 0.25 s), the target waveform data is extracted at the frequency of 4 frames per second (or the target waveform data is obtained by first extracting the target picture data and converting the target picture data) and is displayed on the electronic ink screen in a refreshing manner.
S202: and carrying out graying processing on the original picture data so as to convert the original picture data into data to be displayed and adding the data to be displayed into a gray scale picture queue.
Specifically, after the original picture data provided by the video input end is obtained, the original picture data is subjected to graying processing in sequence according to the acquisition sequence of the original picture data, so that the original picture data in the color format is converted into the data to be displayed in the gray scale format.
Further, the data to be displayed are sequentially added to the gray scale picture queue according to the generation sequence of the data to be displayed. The maximum length of the gray scale picture queue is determined by the size of a gray scale picture corresponding to data to be displayed, the size of a chip memory of the electronic ink screen, the processing speed of the chip and the refreshing frequency of the screen.
Fig. 3 is a schematic diagram of original picture data provided in an embodiment of the present application, and it can be understood that, in an actual situation, a picture corresponding to the original picture data is a color picture, and fig. 3 is a schematic diagram of a grayscale picture. The video stream data provided by the video input end can be directly displayed on the color display, the gray processing of the original picture data in the video stream data is not needed, and the color picture corresponding to the original picture data is directly displayed on the color display.
Fig. 4 is a schematic diagram of data to be displayed according to an embodiment of the present application, which is described by taking an example of converting color image data into image data of 256 gray scales, and obtaining the data to be displayed of 256 gray scales shown in fig. 4 after performing gray scale conversion on the original image data provided in fig. 3.
The gray scale level corresponding to the data to be displayed obtained by performing graying processing on the original picture data may be 16 gray scale, 32 gray scale, 64 gray scale, 256 gray scale, or the like, or a higher gray scale, which is not limited in the present application.
S203: and extracting the data to be displayed to be processed from the gray scale picture queue, and converting the data to be displayed through an image processing algorithm so as to convert the data to be displayed into target picture data.
And sequentially reading the data to be displayed to be processed from the gray-scale picture queue according to the first-in first-out sequence, and determining the picture data format of the data to be displayed. Specifically, the image data format reflects the gray level corresponding to the data to be displayed.
Further, the data to be displayed is converted through an image processing algorithm so as to convert the data to be displayed into target picture data. Illustratively, the image processing algorithm provided by the present embodiment is determined based on the screen refresh mode of the electronic ink screen. In one possible embodiment, the screen refresh mode corresponds to a refresh time within 250 ms.
Wherein the image processing algorithm is determined based on the set screen refresh mode of the electronic ink screen. In this embodiment, an a2 refresh mode is taken as an example of a screen refresh mode, a refresh area corresponding to the a2 refresh mode is a partial screen, the grayscale level is B/W (i.e., two colors, i.e., black and white), the flicker degree and the afterimage degree are both low when the screen is refreshed, and the corresponding refresh time is within 0.25 seconds, then a picture corresponding to the target data format of this embodiment is a black and white picture, and a corresponding image processing algorithm is used to convert the grayscale picture of the data to be displayed into the black and white picture. For example, the image processing algorithm may be an existing processing algorithm such as a dithering algorithm, and the present solution is not limited. In other embodiments, the screen refresh mode may also be a DU refresh mode, a GC16 refresh mode, a GU refresh mode, or the like. The dithering algorithm may be a random dithering algorithm or an ordered dithering algorithm, which is not limited in the present application. The scheme effectively solves the problems of color compression and color distortion after compression by using an image processing algorithm (such as a dithering algorithm) and compensates the condition of display quality reduction caused by the improvement of the refreshing speed.
Illustratively, the gray scale levels and refresh times corresponding to different screen refresh modes (the present solution is not limited to the following screen refresh modes) are shown in the following table, and the corresponding screen refresh mode can be set according to the requirement for the refresh time.
| Screen refresh mode | Refreshing an area | Grey scale level | Degree of flicker | Degree of afterimage | Refresh time |
| DU | Partial screen | 16→B/W | Does not flicker | Is low in | <0.5 second |
| GC16 | Whole screen | 16 | Height of | Is low in | <1 second |
| GU | Partial screen | 16 | Is low in | Is low in | <1 second |
| A2 | Partial screen | B/W | Is low in | In | <0.25 second |
In a possible embodiment, the screen refresh mode is dynamically determined according to the data type corresponding to the data to be displayed, the corresponding data type is recorded in the original picture data, correspondingly, the corresponding data type is also recorded in the data to be displayed obtained after the gray level conversion, and different data types correspond to different screen refresh modes. Illustratively, after data to be displayed are obtained, a data type in the data to be displayed is extracted, a corresponding screen refresh mode is determined according to the data type, if the screen refresh mode is consistent with a previous screen refresh mode, the previous screen refresh mode is maintained, and if the screen refresh mode is inconsistent with the previous screen refresh mode, a new screen refresh mode is switched.
For example, for a data type with a high requirement on the display effect of the electronic screen and a low requirement on the refresh time, a screen refresh mode with a high gray scale and a long refresh time may be set, while for a data type with a low requirement on the display effect of the electronic screen and a high requirement on the refresh time, a screen refresh mode with a low gray scale and a short refresh time may be set.
Fig. 5 is a schematic diagram of target picture data provided in an embodiment of the present application, and fig. 5 shows target picture data obtained by performing image processing (taking dithering algorithm processing as an example) on data to be displayed as shown in fig. 4, and fig. 4 is converted from a picture represented by 256 gray levels into a picture represented by black and white pixels in fig. 5. For example, in this embodiment, an example of obtaining 256-gray-scale data to be displayed by gray processing is described, a picture corresponding to target picture data is set to be a black-and-white picture, that is, a gray level is B/W, after format conversion is performed on the 256-gray-scale data to be displayed by a dithering algorithm, the target picture data with the gray level of B/W is obtained, and at this time, a picture corresponding to the target picture data is a picture with two black and white color levels.
S204: and converting the target picture data into target waveform data required by the driving of the electronic ink screen.
Converting target picture data into target waveform data required by driving of the electronic ink screen based on the waveform file of the electronic ink screen
S205: and sending the target waveform data to a time sequence control circuit, and driving the electronic ink screen to display the picture according to the target waveform data through the time sequence control circuit and the power supply control circuit.
The time sequence control circuit is connected to the electronic ink screen, and the power supply control circuit is connected to the time sequence control circuit and the electronic ink screen.
The time sequence control circuit and the power supply control circuit are used for driving the electronic ink screen to display pictures according to the target waveform data. Specifically, the power control circuit is used for providing driving voltage for the electronic ink display screen, the time sequence control circuit is used for providing control signals for controlling the generation and the removal of the driving voltage for the power control circuit, and the time sequence control circuit is also used for providing driving signals for driving the electronic ink display screen according to a screen refreshing mode of the electronic ink display screen.
Fig. 6 is a schematic diagram of a display effect of an electronic ink screen in a document editing scene provided in an embodiment of the present application, and it is assumed that the display effect is as shown in fig. 6 when the electronic ink screen is used for displaying in a document editing scene or the like. For example, under the scenes that the requirements on character display time are high and the requirements on display quality are low, such as document editing and the like, the screen is refreshed based on an A2 refresh mode, the corresponding gray level is B/W, the screen refreshing time is within 0.25 second, and the requirement on the display response speed of a video input end of a computer and the like on an electronic ink screen can be met.
The method comprises the steps of reading original picture data from a video input end, then carrying out gray scale conversion to obtain data to be displayed, adding the data to be displayed into a gray scale picture queue, reading the data to be displayed needing to be processed in the gray scale picture queue, converting the data to be displayed into target picture data after image processing, further converting the target picture data into target waveform data needed by driving of an electronic ink screen, and displaying the target waveform data on the electronic ink screen. And extracting original picture data according to a set or dynamically determined picture extraction frequency, reducing the processing amount of the picture data, shortening the picture display time of the electronic ink screen, selecting a faster refreshing mode (such as an A2 refreshing mode) on the electronic ink screen in order to adapt to the requirement of the electronic ink screen on the response time, improving the screen refreshing speed by adjusting and optimizing each link of a display flow, and compensating the situation of display quality reduction caused by the improvement of the refreshing speed by an image processing algorithm (such as a dithering algorithm), so that the electronic ink screen can be used as a computer display and achieve better user experience.
Fig. 7 is a schematic structural diagram of a display device based on an electronic ink screen according to an embodiment of the present application. Referring to fig. 7, the electronic ink screen-based display device includes a gray scale conversion module 31, an object conversion module 32, and a screen display module 33.
The gray scale conversion module 31 is configured to obtain original picture data provided by a video input end, perform gray scale conversion on the original picture data to obtain data to be displayed, and add the data to be displayed into a gray scale picture queue; the target conversion module 32 is configured to obtain the data to be displayed from the grayscale picture queue, perform image processing on the display data to obtain target picture data, and convert the target picture data into target waveform data required by driving of an electronic ink screen; and the image display module 33 is configured to drive the electronic ink screen to display an image according to the target waveform data.
The method comprises the steps of reading original picture data from a video input end, then carrying out gray scale conversion to obtain data to be displayed, adding the data to be displayed into a gray scale picture queue, reading the data to be displayed needing to be processed in the gray scale picture queue, converting the data to be displayed into target picture data after image processing, further converting the target picture data into target waveform data needed by driving of an electronic ink screen, and displaying the target waveform data on the electronic ink screen.
In one possible embodiment, the grayscale conversion module 31 is specifically configured to:
acquiring original picture data provided by a video input end in real time according to a set or dynamically determined picture extraction frequency;
and carrying out graying processing on the original picture data so as to convert the original picture data into data to be displayed and adding the data to be displayed into a gray scale picture queue.
In a possible embodiment, when the target conversion module 32 performs image processing on the display data to obtain target screen data, the method specifically includes:
and converting the data to be displayed through an image processing algorithm so as to convert the data to be displayed into target picture data.
In one possible embodiment, the image processing algorithm is determined based on a screen refresh mode of the electronic ink screen, and a refresh time corresponding to the screen refresh mode is within 250 ms.
In a possible embodiment, the screen display module 33 is specifically configured to:
and sending the target waveform data to a time sequence control circuit, and driving the electronic ink screen to display a picture according to the target waveform data through the time sequence control circuit and a power supply control circuit, wherein the time sequence control circuit is connected to the electronic ink screen, and the power supply control circuit is connected to the time sequence control circuit and the electronic ink screen.
Fig. 8 is a schematic structural diagram of a display based on an electronic ink screen according to an embodiment of the present application. Referring to fig. 8, the electronic ink screen 47 based display includes a video data reading module 48, a color grayscale conversion module 41, a frame data image conversion and processing module 42, a grayscale frame queue 43, a screen display driving module 44, a timing control circuit 45, a power control circuit 46 and an electronic ink screen 47.
The video data reading module 48 is connected to the color grayscale conversion module 41, the color grayscale conversion module 41 is connected to the grayscale image queue 43, the grayscale image queue 43 is connected to the screen display driving module 44, the screen display driving module 44 is connected to the image data image conversion and processing module 42 (bi-directionally connected) and the timing control circuit 45, the timing control circuit 45 is connected to the electronic ink screen 47, and the power control circuit 46 is connected to the timing control circuit 45 and the electronic ink screen 47. The grayscale frame queue 43 is further connected to an internal storage module 49 for storing data to be displayed.
Further, the video data reading module 48 is configured to obtain original picture data from the video input end and send the original picture data to the color grayscale conversion module 41, and specifically, the video data reading module 48 is configured to obtain the original picture data provided by the video input end in real time according to the set or dynamically determined picture extraction frequency and send the original picture data to the color grayscale conversion module. The color grayscale conversion module 41 is configured to obtain original image data from the video data reading module 48, perform grayscale conversion on the original image data to obtain data to be displayed, and add the data to be displayed into the grayscale image queue 43.
Further, the image data and image conversion and processing module 42 is configured to obtain data to be displayed from the screen display driving module 44, perform image processing on the display data to obtain target image data, and provide the target image data to the screen display driving module 44. The screen display driving module 44 is configured to obtain data to be displayed from the grayscale picture queue 43 and send the data to the picture data image conversion and processing module 42; the screen display driver module 44 is also configured to obtain target picture data from the picture data image conversion and processing module 42 and convert the target picture data into target waveform data required for driving the electronic ink screen 47.
In this embodiment, the screen display driving module 44 obtains data to be displayed from the grayscale picture queue 43 and sends the data to the picture data image conversion and processing module 42, and the picture data image conversion and processing module 42 performs image processing on the display data to obtain target picture data and sends the target picture data to the screen display driving module 44. The screen display driving module 44 further converts the target picture data into target waveform data required for driving the electronic ink screen 47, and sends the target waveform data to the timing control circuit 45.
The timing control circuit 45 and the power control circuit 46 are used for driving the electronic ink screen 47 to display images according to the target waveform data. Specifically, the power control circuit 46 is specifically configured to provide a driving voltage to the electronic ink panel 47, and the timing control circuit 45 is specifically configured to provide a control signal for controlling generation of the driving voltage to the power control circuit 46 and provide the driving signal to the electronic ink panel 47 according to the determined screen refresh mode.
Specifically, the color grayscale conversion module 41 provided in this embodiment is specifically configured to obtain, in real time, original picture data provided by a video input end according to a set or dynamically determined picture extraction frequency; the original picture data is subjected to graying processing to convert the original picture data into data to be displayed, and the data to be displayed is added to the grayscale picture queue 43.
Further, the image data image conversion and processing module 42 performs conversion processing on the data to be displayed through an image processing algorithm (for example, a dithering algorithm) to convert the data to be displayed into target image data.
Further, the image processing algorithm is determined based on a screen refresh mode of the electronic ink screen, and the refresh time corresponding to the screen refresh mode is within 250 ms. For example, the screen refresh mode is the a2 refresh mode, or other modes supported by eink for a short period of time.
Further, the power control circuit 46 is specifically configured to provide a driving voltage to the electronic ink display panel 47, the timing control circuit 45 is configured to provide a control signal for controlling generation and removal of the driving voltage to the power control circuit 46, and the timing control circuit 45 is further configured to provide a driving signal for driving the electronic ink panel 47 to the electronic ink panel 47 in a screen refresh mode of the electronic ink panel 47, so that the electronic ink panel 47 displays a picture corresponding to the target picture data.
The maximum length of the gray-scale frame queue 43 is determined by the size of the gray-scale image corresponding to the data to be displayed, the size of the chip memory of the electronic ink screen 47, the processing speed of the chip, and the screen refresh frequency. Due to the high throughput and high real-time performance of the color-to-gray conversion, a dedicated image processing module may be designed as the color gray conversion module 41, and multiple concurrent image conversion processes may be provided. In order to meet the real-time requirement of converting the data to be displayed into the target data format, a dedicated image processing module may also be designed as the picture data image conversion and processing module 42, and multiple concurrent conversion processes may be provided. It is understood that the color gray scale conversion module 41 and the image data image conversion and processing module 42 can be independent or combined into one image data processing module to provide more processing functions and faster processing speed.
In one possible embodiment, the screen display driver module 44 determines the screen refresh mode before sending the data to be displayed to the image data conversion and processing module 42, and determines the corresponding image processing algorithm according to the screen refresh mode. The screen refreshing mode is determined according to the data type corresponding to the data to be displayed, the corresponding data type is recorded in the original image data, the corresponding data type is also recorded in the data to be displayed obtained after the gray level conversion, and different data types correspond to different screen refreshing modes. Illustratively, the screen display driving module 44 extracts a data type in the data to be displayed, and determines a corresponding screen refresh mode according to the data type, if the screen refresh mode is consistent with a previous screen refresh mode, the previous screen refresh mode is maintained, and if the screen refresh mode is inconsistent with the previous screen refresh mode, the screen display driving module switches to a new screen refresh mode.
For example, for a data type with a high requirement on the display effect of the electronic screen and a low requirement on the refresh time, a screen refresh mode with a high gray scale and a long refresh time may be set, while for a data type with a low requirement on the display effect of the electronic screen and a high requirement on the refresh time, a screen refresh mode with a low gray scale and a short refresh time may be set.
Illustratively, the screen display driving module 44 extracts data to be displayed from the grayscale picture queue 43, extracts a data type of the data to be displayed, determines a corresponding screen refresh mode according to the data type, and determines a corresponding target data format according to the screen refresh mode.
The original picture data are read from the video input end, then the gray scale conversion is carried out to obtain the data to be displayed, the data to be displayed are added into the gray scale picture queue 43, the data to be displayed which needs to be processed in the gray scale picture queue 43 are read, the data to be displayed are converted into the target picture data after the image processing, the target picture data are further converted into the target waveform data which is needed by the driving of the electronic ink screen and are displayed on the electronic ink screen 47, the screen refreshing speed is effectively improved, the display speed of the picture data is improved, the display quality is effectively guaranteed, and the user experience is optimized. And extracting the original picture data according to the set or dynamically determined picture extraction frequency, reducing the processing amount of the picture data, shortening the picture display time of the electronic ink screen 47, selecting a faster refreshing mode (for example, an A2 refreshing mode) on the electronic ink screen 47 in order to adapt to the requirement of the electronic ink screen 47 on the response time, improving the screen refreshing speed by adjusting and optimizing each link of the display flow, and compensating the situation of display quality reduction caused by the improvement of the refreshing speed by an algorithm, so that the electronic ink screen 47 can be used as a computer display and achieve better user experience.
Embodiments of the present application further provide a storage medium containing computer-executable instructions, which when executed by a computer processor, are configured to perform the electronic ink screen-based display method provided in the above embodiments, where the electronic ink screen-based display method includes: acquiring original picture data provided by a video input end, carrying out gray level conversion on the original picture data to obtain data to be displayed, and adding the data to be displayed into a gray level picture queue; acquiring the data to be displayed from the gray scale picture queue, carrying out image processing on the display data to obtain target picture data, and converting the target picture data into target waveform data required by driving of an electronic ink screen; and driving the electronic ink screen to display the picture according to the target waveform data.
Storage medium-any of various types of memory devices or storage devices. In order to ensure high-speed access to the gray-scale picture queue data, the storage medium provided by the embodiment adopts a volatile random access memory. The term "storage medium" is intended to include: mounting media such as CD-ROM, floppy disk, or tape devices; computer system memory or random access memory such as DRAM, DDR RAM, SRAM, EDO RAM, Lanbas (Rambus) RAM, etc.; non-volatile memory such as flash memory, magnetic media (e.g., hard disk or optical storage); registers or other similar types of memory elements, etc. The storage medium may also include other types of memory or combinations thereof. In addition, the storage medium may be located in a first computer system in which the program is executed, or may be located in a different second computer system connected to the first computer system through a network (such as the internet). The second computer system may provide program instructions to the first computer for execution. The term "storage medium" may include two or more storage media that may reside in different locations, such as in different computer systems that are connected by a network. The storage medium may store program instructions (e.g., embodied as a computer program) that are executable by one or more processors.
Of course, the storage medium provided in the embodiments of the present application contains computer-executable instructions, and the computer-executable instructions are not limited to the display method based on the electronic ink screen described above, and may also perform related operations in the display method based on the electronic ink screen provided in any embodiment of the present application.
The display device, the apparatus and the storage medium based on the electronic ink screen provided in the foregoing embodiments may perform the display method based on the electronic ink screen provided in any embodiment of the present application, and reference may be made to the display method based on the electronic ink screen provided in any embodiment of the present application without detailed technical details described in the foregoing embodiments.
The foregoing is considered as illustrative of the preferred embodiments of the invention and the technical principles employed. The present application is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present application has been described in more detail with reference to the above embodiments, the present application is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present application, and the scope of the present application is determined by the scope of the claims.
Claims (10)
1. A display method based on an electronic ink screen is characterized by comprising the following steps:
acquiring original picture data provided by a video input end, carrying out gray level conversion on the original picture data to obtain data to be displayed, and adding the data to be displayed into a gray level picture queue;
acquiring the data to be displayed from the gray scale picture queue, carrying out image processing on the display data to obtain target picture data, and converting the target picture data into target waveform data required by driving of an electronic ink screen;
and driving the electronic ink screen to display the picture according to the target waveform data.
2. The electronic ink screen-based display method according to claim 1, wherein the acquiring original picture data provided by a video input end, performing gray scale conversion on the original picture data to obtain data to be displayed, and adding the data to be displayed into a gray scale picture queue comprises:
acquiring original picture data provided by a video input end in real time according to a set or dynamically determined picture extraction frequency;
and carrying out graying processing on the original picture data so as to convert the original picture data into data to be displayed and adding the data to be displayed into a gray scale picture queue.
3. The electronic ink screen-based display method according to claim 1, wherein the image processing the display data to obtain target picture data comprises:
and converting the data to be displayed through an image processing algorithm so as to convert the data to be displayed into target picture data.
4. The electronic ink screen-based display method according to claim 3, wherein the image processing algorithm is determined based on a screen refresh mode of the electronic ink screen, and a refresh time corresponding to the screen refresh mode is within 250 ms.
5. The method for displaying on the basis of the electronic ink screen according to claim 1, wherein the driving the electronic ink screen to display the image according to the target waveform data includes:
and sending the target waveform data to a time sequence control circuit, and driving the electronic ink screen to display a picture according to the target waveform data through the time sequence control circuit and a power supply control circuit, wherein the time sequence control circuit is connected to the electronic ink screen, and the power supply control circuit is connected to the time sequence control circuit and the electronic ink screen.
6. The display device based on the electronic ink screen is characterized by comprising a gray scale conversion module, a target conversion module and a picture display module, wherein:
the gray scale conversion module is used for acquiring original picture data provided by a video input end, carrying out gray scale conversion on the original picture data to obtain data to be displayed and adding the data to be displayed into a gray scale picture queue;
the target conversion module is used for acquiring the data to be displayed from the gray scale picture queue, carrying out image processing on the display data to obtain target picture data and converting the target picture data into target waveform data required by the driving of the electronic ink screen;
and the picture display module is used for driving the electronic ink screen to display pictures according to the target waveform data.
7. The electronic ink screen-based display device of claim 6, wherein the grayscale conversion module is specifically configured to:
acquiring original picture data provided by a video input end in real time according to a set or dynamically determined picture extraction frequency;
and carrying out graying processing on the original picture data so as to convert the original picture data into data to be displayed and adding the data to be displayed into a gray scale picture queue.
8. The utility model provides a display based on electronic ink screen, its characterized in that, includes video data reading module, colored grey scale conversion module, picture data image conversion and processing module, grey scale picture queue, screen display drive module, sequential control circuit, power control circuit and electronic ink screen, video data reading module connect in colored grey scale conversion module, colored grey scale conversion module connect in grey scale picture queue, grey scale picture queue connects in screen display drive module, screen display drive module connect in picture data image conversion and processing module with sequential control circuit, sequential control circuit connect in electronic ink screen, power control circuit connect in sequential control circuit with electronic ink screen, wherein:
the video data reading module is used for acquiring original picture data from a video input end and sending the original picture data to the color gray scale conversion module;
the color gray scale conversion module is used for carrying out gray scale conversion on the original picture data to obtain data to be displayed and adding the data to be displayed into the gray scale picture queue;
the image data image conversion and processing module is used for acquiring the data to be displayed from the screen display driving module, carrying out image processing on the display data to obtain target image data and providing the target image data to the screen display driving module;
the screen display driving module is used for acquiring the data to be displayed from the gray scale picture queue, sending the data to the picture data image conversion and processing module, acquiring target picture data from the picture data image conversion and processing module, and converting the target picture data into target waveform data required by electronic ink screen driving;
and the time sequence control circuit and the power supply control circuit are used for driving the electronic ink screen to display pictures according to the target waveform data.
9. The electronic ink screen-based display of claim 8, wherein the video data reading module is specifically configured to obtain original picture data provided by the video input terminal in real time according to a set or dynamically determined picture extraction frequency, and send the original picture data to the color grayscale conversion module.
10. A storage medium containing computer-executable instructions for performing the electronic ink screen-based display method of any one of claims 1 to 5 when executed by a computer processor.
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Application publication date: 20210615 |