CN114691008A

CN114691008A - Handwritten note display method of ink screen device, ink screen device and storage medium

Info

Publication number: CN114691008A
Application number: CN202011466838.1A
Authority: CN
Inventors: 程超
Original assignee: Zhangyue Technology Co Ltd
Current assignee: Zhangyue Technology Co Ltd
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2022-07-01

Abstract

The invention discloses a handwritten note display method of ink screen equipment, the ink screen equipment and a storage medium. Wherein, the method comprises the following steps: identifying the note color selected by a user in a first gray scale refreshing mode; judging whether the note color can be displayed in a second gray scale refreshing mode; the gray scale of the first gray scale refreshing mode is higher than that of the second gray scale refreshing mode; and if the note color can be displayed in the second gray scale refreshing mode, responding to the note drawing operation of the user, and refreshing the page by adopting the second gray scale refreshing mode to display the handwritten note drawn by the note color. By adopting the scheme, on the premise of ensuring normal display of the note color selected by the user, the handwriting operation of the user is responded in time, the handwriting speed is increased, the occurrence of the phenomenon that the handwritten note does not follow the pen is reduced, and therefore the user experience is improved.

Description

Handwritten note display method of ink screen device, ink screen device and storage medium

Technical Field

The invention relates to the technical field of information display, in particular to a handwritten note display method of ink screen equipment, the ink screen equipment and a storage medium.

Background

The ink screen device refers to an electronic device using an electronic ink screen (E-ink). The display effect of the electronic ink screen is higher in similarity with paper materials, the defect of light reflection of the traditional liquid crystal display can be avoided, good visual experience can be provided for users, and therefore the electronic ink screen has more applications in electronic book reading and the like.

Many ink screen devices also support handwriting functionality, whereby a user can write content on the screen via a corresponding medium (e.g., an electromagnetic pen, etc.). In order to provide rich handwritten note colors for users, the ink screen device adopts a 16-gray scale refreshing mode. However, the refresh rate of the 16-gray level refresh mode is slow, so that the user cannot respond to the handwriting drawing operation in time, and the disadvantages of slow handwriting speed and no pen following of the handwritten note occur.

Disclosure of Invention

In view of the above, the present invention has been made to provide a handwritten note display method of an ink screen apparatus, and a storage medium that overcome or at least partially solve the above problems.

According to an aspect of the present invention, there is provided a handwritten note display method of an ink screen device, including:

identifying the note color selected by a user in a first gray scale refreshing mode;

judging whether the note color can be displayed in a second gray scale refreshing mode; the gray scale of the first gray scale refreshing mode is higher than that of the second gray scale refreshing mode;

and if the note color can be displayed in the second gray scale refreshing mode, responding to the note drawing operation of the user, and refreshing the page by adopting the second gray scale refreshing mode to display the handwritten note drawn by the note color.

According to another aspect of the present invention, there is provided an ink screen apparatus including: the ink screen, the electromagnetic plate, the processor, the memory, the communication interface and the communication bus are communicated with each other through the communication bus;

the electromagnetic plate is used for detecting handwriting operation instructions generated on the ink screen by the electromagnetic pen,

the memory is configured to store at least one executable instruction that causes the processor to:

and if the note color can be displayed in a second gray scale refreshing mode, responding to the note drawing operation of a user, and refreshing a page by adopting the second gray scale refreshing mode to display the handwritten note drawn by the note color.

According to still another aspect of the present invention, a computer storage medium is provided, where at least one executable instruction is stored in the storage medium, and the executable instruction causes a processor to perform an operation corresponding to the handwritten note display method of the ink screen device.

The invention discloses a handwritten note display method of ink screen equipment, the ink screen equipment and a storage medium. Firstly, identifying the note color selected by a user in a first gray scale refreshing mode; further judging whether the note color can be displayed in a second gray scale refreshing mode; wherein the first gray scale is higher than the second gray scale; and if the note color can be displayed in the second gray scale refreshing mode, responding to the note drawing operation of the user, and refreshing the page by adopting the second gray scale refreshing mode to display the handwritten note drawn by the note color. By adopting the scheme, on the premise of ensuring normal display of the note color selected by the user, the handwriting operation of the user is responded in time, the handwriting speed is increased, the occurrence of the phenomenon that the handwritten note does not follow the pen is reduced, and therefore the user experience is improved.

The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

FIG. 1 is a flowchart illustrating a handwritten note display method of an ink screen device according to an embodiment of the present invention;

FIG. 2 is a flowchart illustrating a handwritten note display method of an ink screen device according to a second embodiment of the present invention;

FIG. 3 is a flowchart illustrating a handwritten note display method of an ink screen device according to a third embodiment of the present invention;

fig. 4 shows a schematic structural diagram of an ink screen device according to a fifth embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

Example one

Fig. 1 is a flowchart illustrating a handwritten note display method of an ink screen device according to an embodiment of the present invention. The handwritten note display method provided by the embodiment is applied to ink screen equipment, the ink screen equipment can be a reader, a mobile phone terminal with an ink screen, a computer, wearable equipment and the like, and the specific type of the ink screen equipment is not limited by the embodiment.

The ink screen device generally supports a plurality of gray scale refresh modes, such as a 16 gray scale refresh mode, an 8 gray scale refresh mode, a4 gray scale refresh mode, and a2 gray scale refresh mode. Wherein, the higher the gray scale of the refresh mode, the more colors can be provided, but the slower the corresponding refresh speed. In order to provide a user with diversified note colors, the ink screen device defaults to a high gray scale refresh mode. However, the refresh rate of the high gray scale refresh mode is slow, the slow handwriting rate is easy to occur in the handwriting scene, and the phenomenon that the handwriting notes do not follow the pen is easy to occur. In order to solve the technical disadvantage, in the embodiment, through the following steps S110 to S130, on the premise of ensuring normal display of the note color selected by the user, the handwriting speed is increased, and the occurrence of the phenomenon that the handwritten note does not follow the pen is reduced.

As shown in fig. 1, the method comprises the steps of:

step S110: and identifying the note color selected by the user in the first gray scale refreshing mode.

The first gray scale refreshing mode is a high gray scale refreshing mode, and more note color options can be provided for a user in the first gray scale refreshing mode. Taking the first gray scale refresh mode as a 16 gray scale refresh mode as an example, if the ink screen device is a black-and-white ink screen device, the 16 gray scale refresh mode can provide 16 note color options for the user; if the ink screen device is a color ink screen device, then a 16 gray level refresh mode can be provided for the user 16³(4096) A note color option.

When the first gray scale refreshing mode provides more note color options for the user, in order to improve the display effect, common note color options can be displayed in a note color selection page firstly, and all note color options are displayed in a color palette mode after receiving the triggering operation of the user for checking more color options; alternatively, all note color options may be displayed directly in a color palette. This embodiment is not limited to this.

And monitoring the note color selection operation of the user, and identifying the note color selected by the user, wherein the note color is the note color in the first gray scale refreshing mode. The specific note color selection operation is not limited in this embodiment, and may be, for example, a click operation, a preset gesture operation, a voice control operation, and the like.

Step S120: judging whether the note color can be displayed in a second gray scale refreshing mode; if yes, go to step S130; the gray scale of the first gray scale refreshing mode is higher than that of the second gray scale refreshing mode.

The second gray scale refresh mode is specifically a low gray scale refresh mode having a higher refresh rate than the first gray scale refresh mode.

After the note color selected by the user is identified, whether the note color can be displayed in a second gray scale refreshing mode lower than the first gray scale refreshing mode is further judged. If the note color can be displayed in the second grayscale refresh mode, further performing step S130; if the note color cannot be displayed in the second gray scale refreshing mode, refreshing is carried out by adopting the original refreshing mode, namely responding to the note drawing operation of a user, and page refreshing is carried out by adopting the first gray scale refreshing mode so as to display the handwritten note drawn by the note color.

Step S130: and responding to the note drawing operation of the user, and refreshing the page by adopting a second gray level refreshing mode so as to display the handwritten note drawn by the note color.

If the note color can be displayed in the second gray scale refreshing mode, the refreshing mode can be switched from the first gray scale refreshing mode to the second gray scale refreshing mode, so that the refreshing speed is improved. Specifically, in response to a note drawing operation of the user, a second grayscale refresh mode is employed for page refresh to display a handwritten note drawn in a note color.

Therefore, in the embodiment, firstly, the note color selected by the user in the high gray scale refresh mode is identified, whether the note color can be displayed in the low gray scale refresh mode is further judged, if the note color can be displayed in the low gray scale refresh mode, the refresh mode is switched from the high gray scale refresh mode to the low gray scale refresh mode, and the handwritten note drawn by the note color selected by the user is displayed. By adopting the scheme, on the premise of ensuring normal display of the note color selected by the user, the handwriting operation of the user is responded in time, the handwriting speed is increased, the occurrence of the phenomenon that the handwritten note does not follow the pen is reduced, and therefore the user experience is improved.

Example two

Fig. 2 is a flowchart illustrating a handwritten note display method of an ink screen device according to a second embodiment of the present invention. In this embodiment, on the basis of the first embodiment, a low grayscale refresh mode capable of displaying a note color selected by a user is further accurately identified, and the note color is ensured to be normally displayed in the low grayscale refresh mode.

As shown in fig. 2, the method includes:

step S210: and identifying the note color selected by the user in the first gray scale refreshing mode.

Step S220: and calculating a first gray scale value of the note color in a first gray scale refreshing mode.

The first gray scale refresh mode can provide a plurality of note color options, each note color option corresponds to one or more gray scale values in the first gray scale refresh mode, so that the gray scale value of the note color in the first gray scale refresh mode can be obtained, and the gray scale value is the first gray scale value.

In practical application scenarios, the ink screen device can be divided into a black-and-white ink screen device and a color ink screen device. The types of the ink screen devices are different, and the first gray-scale value is obtained in different manners.

In the black-and-white ink screen apparatus, each note color corresponds to one gray scale value, and for example, eight colors of black, first gray, second gray, third gray, fourth gray, fifth gray, sixth gray, and white are provided in the 8 gray scale refresh mode. The eight colors correspond to gray scale values 0, 1, 2, 3, 4, 5, 6, and 7 in the 8-gray scale refresh mode, respectively. Therefore, in the black-and-white ink screen device, the first gray scale value corresponding to the note color selected by the user can be calculated according to the mapping relationship between the color and the gray scale value in the first gray scale refresh mode, and in the black-and-white ink screen device, the first gray scale value corresponding to the note color selected by the user is single.

In the color ink screen device, because the color ink screen is formed by covering a color filter film on a black-white ink screen, three adjacent pixels on the color filter film are sequentially coated with three colors of red, green and blue, and the three adjacent pixels of red, green and blue form a pixel unit. Thus, in a color ink screen device, one note color corresponds to three gray scale values. In other words, the first gray scale values of the note colors in the first gray scale refresh mode are multiple. In a specific implementation process, the RGB values of the note color are first obtained, and then three color components of the RGB values are obtained, that is, a red component, a green component, and a blue component are extracted respectively. And acquiring a gray value of each color component (wherein the gray value range is 0-255), and further determining a first gray value in a first gray scale refreshing mode corresponding to the gray value according to the mapping relation between the gray value and the gray value in the first gray scale refreshing mode.

For example, the mapping relationship between the gray-level values and the gray-level values in the 16-gray-level refresh mode is shown in table 1a and table 1b (in the actual implementation process, a person skilled in the art can configure the mapping relationship between the gray-level values and the gray-level values according to actual requirements, which is not limited in this embodiment). In tables 1a and 1b, 16 gray scale values in the 16 gray scale refresh mode correspond to 16 gray scale values of 0-255, respectively, so that a pixel point in the 16 gray scale refresh mode can correspond to 16 gray scale values, and in the color ink screen device, three adjacent rgb pixels form a pixel unit, so that the 16 gray scale refresh mode can provide 16 gray scale values³And (5) writing colors. If the note color is orange, and the RGB value is (255, 136, 17), the first gray scale value corresponding to the note color is 15, 8, 1; if the note color is purple and the RGB value is (136, 0, 136), the first gray level corresponding to the note color is 8, 0, 8.

TABLE 1a

Grey scale value	0	17	34	51	68	85	102	119
									Gray scale value	0	1	2	3	4	5	6	7

TABLE 1b

Grey scale value	136	153	170	187	204	221	238	255
									Gray scale value	8	9	10	11	12	13	14	15

Step S230: judging whether a second gray scale value corresponding to the first gray scale value exists in a second gray scale refreshing mode according to the mapping relation among the gray scale values in different gray scale refreshing modes; if yes, go to step S240; if not, go to step S250.

In this embodiment, mapping relationships between gray scale values in different gray scale refresh modes are pre-established, and the colors displayed on the page by the gray scale values having the corresponding relationships are the same. The mapping relationship among the gray scale values of the 16 gray scale refresh mode, the 8 gray scale refresh mode, the 4 gray scale refresh mode and the 2 gray scale refresh mode is shown in the following table 2. As can be seen from table 2, the gray scale value 0 of the 16 gray scale refresh mode corresponds to the gray scale value 0 of the 8 gray scale refresh mode, the 4 gray scale refresh mode and the 2 gray scale refresh mode, respectively; gray scale value 2 for the 16 gray scale refresh mode corresponds to gray scale value 1 for the 8 gray scale refresh mode, and so on.

TABLE 2

16 Gray level Refresh mode	8 Gray level Refresh mode	4 Gray level Refresh mode	2 Gray level Refresh mode
				0	0	0	0
1
				2	1
3
				4	2
5		1
				6	3
7
				8	4
9
				10		2
11	5
				12
13	6
				14
15	7	3	1

According to the mapping relation between the gray-scale values in different gray-scale refreshing modes, whether the gray-scale value corresponding to the first gray-scale value exists in the second gray-scale refreshing mode can be accurately and quickly judged. And the gray scale value in the second gray scale refreshing mode corresponding to the first gray scale value is a second gray scale value.

In a specific implementation process, the types of the ink screen devices are different, and a difference also exists in a manner of judging whether a second gray scale value corresponding to the first gray scale value exists in the second gray scale refresh mode.

In the black-and-white ink screen, if the first gray scale value is single, it is determined whether a second gray scale value corresponding to the single first gray scale value exists in the second gray scale refresh mode according to a mapping relationship between gray scale values in different gray scale refresh modes, and if so, step S240 is executed. For example, if the first gray scale refresh mode is the 16 gray scale refresh mode and the first gray scale value is 8, it can be known from table 2 that the gray scale value 4 in the 8 gray scale refresh mode corresponds to the first gray scale value 8 in the 16 gray scale refresh mode, so as to determine that the second gray scale value corresponding to the single first gray scale value exists in the 8 gray scale refresh mode, and the second gray scale value is the gray scale value 4 in the 8 gray scale refresh mode.

In the color ink screen device, if the first gray scale values are multiple, it is determined whether a second gray scale value corresponding to the first gray scale value exists in the second gray scale refresh mode for each first gray scale value. If the second gray scale value corresponding to each of the first gray scale values exists in the second gray scale refresh mode, step S240 is performed. In other words, if each first gray level value can find the corresponding second gray level value from the same second gray level refresh mode, step S240 is executed. Still taking the first gray scale refresh mode as the 16 gray scale refresh mode as an example, if the first gray scale value corresponding to the note color orange obtained in step S220 is 15, 8, 1, and the 8 gray scale refresh mode only has the gray scale values corresponding to the first gray scale value 15 and the first gray scale value 8, but does not have the gray scale value corresponding to the first gray scale value 1, it is determined that the note color orange cannot be displayed in the 8 gray scale refresh mode, thus it is determined that the second gray scale value corresponding to the first gray scale value does not exist in the 8 gray scale refresh mode. If the first gray scale value corresponding to the purple color of the note is 8, 0, 8, which is obtained in step S220. And the 8 gray scale refreshing mode has second gray scale values 4, 0 and 4 corresponding to the first gray scale values 8, 0 and 8, so that the second gray scale values corresponding to the first gray scale values exist in the 8 gray scale refreshing mode, namely, the purple color of the note can be displayed in the 8 gray scale refreshing mode.

Step S240: and responding to the note drawing operation of the user, drawing the handwritten note by using a second gray scale value, and refreshing the page by adopting a second gray scale refreshing mode.

And if a second gray scale value corresponding to the first gray scale value exists in the second gray scale refreshing mode, indicating that the note color can be displayed in the second gray scale refreshing mode, so that the page refreshing is carried out by adopting the second gray scale refreshing mode in response to the note drawing operation of the user. In addition, in this embodiment, the handwritten note is specifically drawn by using the second gray scale value, and since the second gray scale value belongs to the second gray scale refresh mode, the second gray scale value can be accurately displayed in the second gray scale refresh mode, and the second gray scale value corresponds to the first gray scale value, so that the display effect is consistent, thereby enabling the note color to adapt to the second gray scale refresh mode, and ensuring accurate display of the note color in the second refresh mode.

In the black-and-white ink screen equipment, in response to the note drawing operation of a user, the handwritten note is drawn in a second gray scale value corresponding to the single first gray scale value, and the page refreshing is carried out in a second gray scale refreshing mode. And in the color ink screen equipment, if the second gray-scale values are multiple, responding to the note drawing operation of the user, drawing the handwritten notes by the second gray-scale values corresponding to each first gray-scale value, and refreshing the page by adopting a second gray-scale refreshing mode.

In a specific implementation process, this step can be specifically realized through the following steps S241 to S243.

And S241, identifying a drawing area according to the note drawing operation of the user, and taking the second gray-scale value as the gray-scale value corresponding to the drawing area.

In the process of drawing the note of the user, the note drawing operation of the user is monitored, and the drawing position of the note is identified according to the note drawing operation of the user. And further identifying a drawing area of the note according to the set note width. And taking the second gray scale value as the gray scale value corresponding to the filled drawing area.

In the black-and-white ink screen device, if the second gray scale value is single, the gray scale value corresponding to each pixel in the drawing area is the single second gray scale value; in the color ink screen device, the second gray scale values are multiple, and the gray scale values of multiple pixels contained in one pixel unit in the drawing area respectively correspond to the multiple second gray scale values. For example, if the second gray-scale value is 0, 2, 1, the gray-scale values of the three pixels of one pixel unit in the drawing area are 0, 2, 1, respectively.

And S242, generating image data of the image to be displayed based on the drawing area and the gray-scale value corresponding to the drawing area.

In the image data generation process of the image to be displayed, at least one of the following two ways may be adopted:

the method comprises the steps of obtaining image data of a previous frame of image to be displayed, and generating the image data of the image to be displayed according to the image data of the previous frame of image to be displayed, a drawing area and a gray-scale value corresponding to the drawing area. In this way, the image to be displayed is a display page of the entire ink screen device after being refreshed.

The image to be displayed in the previous frame is the image displayed after the last page refresh, and is also the image displayed in the current ink screen device. And correcting the previous frame of image to be displayed through the drawing area and the gray-scale value corresponding to the drawing area, so as to obtain the current corresponding image to be displayed.

And in the second mode, the image to be displayed is generated only according to the drawing area and the gray-scale value corresponding to the drawing area. In this way, the image to be displayed is a portion of the display page of the refreshed ink screen device. Specifically, the updated display page is a portion that changes from the current display page.

And S243, looking up a table to obtain a driving waveform of the image to be displayed, and driving the ink screen to display the image to be displayed according to the driving waveform.

After the image to be displayed is obtained, the driving waveform corresponding to the gray value of each pixel is searched in the LUT according to the gray value corresponding to each pixel in the image to be displayed. The ink capsules at the corresponding pixel positions on the ink screen can be driven according to the driving waveforms, so that black and white particles in the ink capsules move at different distances to form corresponding colors.

Specifically, if the image data of the image to be displayed is generated according to the image data of the previous frame of image to be displayed, the drawing area and the gray-scale value corresponding to the drawing area, the ink screen is driven to display the image to be displayed in a global refreshing mode. This kind of mode can effectively avoid the screen ghost, promotes the display effect.

And if the image data of the image to be displayed is generated according to the drawing area and the gray-scale value corresponding to the drawing area, driving the ink screen to display the image to be displayed in a local refreshing mode. The mode can greatly improve the refreshing efficiency and effectively reduce the screen flashing phenomenon.

Step S250: and responding to the note drawing operation of the user, and refreshing the page by adopting a first gray scale refreshing mode to display the handwritten note drawn by the note color.

Therefore, the first gray scale value of the note color in the first gray scale refreshing mode is calculated, and whether the second gray scale value corresponding to the first gray scale value exists in the second gray scale refreshing mode is judged according to the mapping relation among the gray scale values in different gray scale refreshing modes, so that whether the note color can be displayed in the second gray scale refreshing mode can be accurately and quickly judged; and further drawing the handwritten note by using the second gray scale value after determining that the note color can be displayed in the second gray scale refreshing mode, and refreshing the page by using the second gray scale refreshing mode, so that the note color can be matched with the second gray scale refreshing mode, and the accurate display of the note color in the second refreshing mode is ensured.

EXAMPLE III

FIG. 3 is a flowchart illustrating a handwritten note display method of an ink screen device according to a third embodiment of the present invention. Compared with the first embodiment, the first embodiment further adopts a refresh mode with the fastest refresh speed to refresh under the condition of ensuring normal display of note colors, so that the handwriting rate is further improved, and the note following effect is improved.

As shown in fig. 3, the method includes:

step S310: and identifying the note color selected by the user in the first gray scale refreshing mode.

Step S320: judging whether the note color can be displayed in a second gray scale refreshing mode; if yes, go to step S330;

in this embodiment, the note color selected in the first grayscale refresh mode is matched with a plurality of different second grayscale refresh modes. It is further determined whether each of the second grayscale refresh modes is capable of displaying the note color.

The specific determination process may refer to the description of the corresponding part in the first embodiment and/or the second embodiment, which is not described herein again.

Step S330: judging whether a plurality of second gray scale refreshing modes capable of displaying note colors are available; if yes, go to step S340; if not, go to step S350.

Step S340: and identifying a target second gray scale refreshing mode with the minimum gray scale from the plurality of second gray scale refreshing modes, and responding to the note drawing operation of the user and refreshing the page by adopting the target second gray scale refreshing mode.

If the note color can be displayed in a plurality of second gray scale refreshing modes, a refreshing mode with the highest refreshing speed is screened from the plurality of second gray scale refreshing modes, namely, a second gray scale refreshing mode with the smallest gray scale is identified, the second gray scale refreshing mode with the smallest gray scale in the plurality of second gray scale refreshing modes is a target second gray scale refreshing mode, and finally, the target second gray scale refreshing mode is adopted for page refreshing.

Step S350: and responding to the note drawing operation of the user, and refreshing the page by adopting the second gray scale refreshing mode.

In another embodiment, steps S320-S350 may be replaced by: s320, selecting a second gray scale refreshing mode with the minimum gray scale in the current set from the set to be compared, judging whether the note color can be displayed in the second gray scale refreshing mode, and deleting the second gray scale refreshing mode from the set to be compared; s330, if the note color can be displayed in the second gray scale refreshing mode, responding to the note drawing operation of the user, and refreshing the page by adopting the second gray scale refreshing mode; s340, if the note color cannot be displayed in the second grayscale refresh mode, then S320 is further performed.

Therefore, the embodiment further adopts the refresh mode with the fastest refresh speed to refresh under the condition of ensuring normal display of note colors, so that the handwriting rate is further improved, and the note tracing effect is improved.

Example four

According to a fourth embodiment of the present invention, a non-volatile computer storage medium is provided, where the computer storage medium stores at least one executable instruction, and the computer executable instruction may execute the handwritten note display method of the ink screen device in any of the above-mentioned method embodiments.

The executable instructions may be specifically configured to cause the processor to:

In an alternative embodiment, the executable instructions may be specifically configured to cause the processor to:

calculating a first gray scale value of the note color in the first gray scale refreshing mode;

and judging whether a second gray scale value corresponding to the first gray scale value exists in a second gray scale refreshing mode according to the mapping relation among the gray scale values in different gray scale refreshing modes.

and if a second gray value corresponding to the first gray value exists in the second gray level refreshing mode, responding to a note drawing operation of a user, drawing a handwritten note by using the second gray value, and refreshing a page by using the second gray level refreshing mode.

identifying a drawing area according to the note drawing operation of a user, and taking the second gray value as a gray value corresponding to the drawing area;

generating image data of an image to be displayed based on the drawing area and the gray-scale value corresponding to the drawing area;

looking up a table to obtain a driving waveform of the image to be displayed;

and driving an ink screen to display the image to be displayed according to the driving waveform.

if the ink screen equipment is color ink screen equipment, the first gray scale values are multiple;

for each first gray scale value, judging whether a second gray scale value corresponding to the first gray scale value exists in a second gray scale refreshing mode;

and if the second gray-scale value corresponding to each first gray-scale value exists in the second gray-scale refreshing mode, responding to the note drawing operation of the user, drawing the handwritten note by using the second gray-scale value corresponding to each first gray-scale value, and refreshing the page by adopting the second gray-scale refreshing mode.

if the ink screen equipment is black ink screen equipment, the first gray scale value is single;

judging whether a second gray scale value corresponding to the single first gray scale value exists in a second gray scale refreshing mode;

and if the second gray value corresponding to the single first gray value exists in the second gray level refreshing mode, responding to the note drawing operation of the user, drawing the handwritten note by using the second gray value corresponding to the single first gray value, and refreshing the page by adopting the second gray level refreshing mode.

if the note color can be displayed in a plurality of second gray scale refreshing modes;

identifying a target second gray scale refresh mode having a minimum gray scale from among the plurality of second gray scale refresh modes;

and responding to the note drawing operation of the user, and refreshing the page by adopting the target second gray level refreshing mode.

and if the note color cannot be displayed in the second gray scale refreshing mode, responding to the note drawing operation of a user, and refreshing a page by adopting the first gray scale refreshing mode to display the handwritten note drawn by the note color.

EXAMPLE five

Fig. 4 shows a schematic structural diagram of an ink screen device according to a fifth embodiment of the present invention. As shown in fig. 4, the ink screen apparatus 400 may include: an ink screen 401, a magnetic plate 402, a processor 403, a memory 404, a communication Interface 405, and a communication bus 406. If the ink-screen device is a color ink-screen device, the ink-screen device 400 may further include a color filter (not shown).

Wherein: the ink screen 401, the electromagnetic board 402, the processor 403, the memory 404 and the communication interface 405 are in communication with each other via a communication bus 406. The electromagnetic board 402 is used to detect a handwriting operation instruction generated on the ink screen 501.

A communication interface 405 for communicating with network elements of other devices, such as clients or other servers. The processor 403 is configured to execute the program 407, and may specifically execute relevant steps in the embodiment of the handwritten note display method of the ink screen device.

In particular, the program 407 may include program code that includes computer operating instructions.

The processor 403 may be a central processing unit CPU, or an Application Specific Integrated Circuit (ASIC), or one or more Integrated circuits configured to implement an embodiment of the invention. The ink screen device comprises one or more processors, which can be the same type of processor, such as one or more CPUs; or may be different types of processors such as one or more CPUs and one or more ASICs.

The memory 404 stores a program 407. The memory 404 may comprise high-speed RAM memory, and may also include non-volatile memory (non-volatile memory), such as at least one disk memory.

The program 407 may specifically be configured to cause the processor 403 to perform the following operations:

In an alternative embodiment, the program 407 is specifically configured to cause the processor 403 to perform the following operations:

looking up a table to obtain a driving waveform of the image to be displayed;

and if a second gray value corresponding to each first gray value exists in the second gray value refreshing mode, responding to a note drawing operation of a user, drawing a handwritten note by using the second gray value corresponding to each first gray value, and refreshing the page by adopting the second gray value refreshing mode.

if the note color can be displayed in a plurality of second gray scale refresh modes;

identifying a target second gray scale refresh mode having a minimum gray scale from the plurality of second gray scale refresh modes;

The algorithms or displays presented herein are not inherently related to any particular computer, virtual system, or other apparatus. Various general purpose systems may also be used with the teachings herein. The required structure for constructing such a system will be apparent from the description above. In addition, embodiments of the present invention are not directed to any particular programming language. It is appreciated that a variety of programming languages may be used to implement the teachings of the present invention as described herein, and any descriptions of specific languages are provided above to disclose the best mode of the invention.

In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the embodiments of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the invention and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: rather, the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.

Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components in the embodiments may be combined into one module or unit or component, and furthermore, may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.

Furthermore, those skilled in the art will appreciate that while some embodiments herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination.

The various component embodiments of the invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that a microprocessor or Digital Signal Processor (DSP) may be used in practice to implement some or all of the functionality of some or all of the components according to embodiments of the present invention. The present invention may also be embodied as apparatus or device programs (e.g., computer programs and computer program products) for performing a portion or all of the methods described herein. Such programs implementing the present invention may be stored on computer-readable media or may be in the form of one or more signals. Such a signal may be downloaded from an internet website or provided on a carrier signal or in any other form.

It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names. The steps in the above embodiments should not be construed as limiting the order of execution unless specified otherwise.

The invention discloses: A1. a handwritten note display method of an ink screen device comprises the following steps:

A2. The method of A1, wherein the determining whether the note color is displayable in a second grayscale refresh mode further comprises:

A3. The method of a2, wherein, if the note color can be displayed in a second grayscale refresh mode, responding to a note drawing operation of a user, and performing page refresh in the second grayscale refresh mode further comprises:

A4. The method of a3, wherein the drawing the handwritten note at the second grayscale value in response to a note drawing operation by the user, and performing page refresh in the second grayscale refresh mode further comprises:

looking up a table to obtain a driving waveform of the image to be displayed;

A5. The method according to a3, wherein if the ink-screen device is a color ink-screen device, the first gray scale value is plural;

the determining whether a second gray scale value corresponding to the first gray scale value exists in a second gray scale refresh mode further includes: for each first gray scale value, judging whether a second gray scale value corresponding to the first gray scale value exists in a second gray scale refreshing mode;

if a second gray value corresponding to the first gray value exists in the second gray level refresh mode, responding to a note drawing operation of a user, drawing a handwritten note by using the second gray value, and performing page refresh by using the second gray level refresh mode further comprises: and if a second gray value corresponding to each first gray value exists in the second gray value refreshing mode, responding to a note drawing operation of a user, drawing a handwritten note by using the second gray value corresponding to each first gray value, and refreshing the page by adopting the second gray value refreshing mode.

A6. The method of a3, wherein the first grayscale value is single if the ink-screen device is a black ink-screen device;

the determining whether a second gray scale value corresponding to the first gray scale value exists in a second gray scale refresh mode further includes: judging whether a second gray scale value corresponding to the single first gray scale value exists in a second gray scale refreshing mode;

if a second gray value corresponding to the first gray value exists in the second gray level refresh mode, responding to a note drawing operation of a user, drawing a handwritten note by using the second gray value, and performing page refresh by using the second gray level refresh mode further comprises: and if the second gray value corresponding to the single first gray value exists in the second gray level refreshing mode, responding to the note drawing operation of the user, drawing the handwritten note by using the second gray value corresponding to the single first gray value, and refreshing the page by adopting the second gray level refreshing mode.

A7. The method of any of a1-a6, wherein if the note color is displayable in a plurality of second grayscale refresh modes;

the method further comprises the following steps: identifying a target second gray scale refresh mode having a smallest gray scale from the plurality of second gray scale refresh modes;

the responding to the note drawing operation of the user, the refreshing the page by adopting the second gray scale refreshing mode further comprises: and responding to the note drawing operation of the user, and refreshing the page by adopting the target second gray level refreshing mode.

A8. The method of any one of a1-a7, wherein the method further comprises:

The invention also discloses: B9. an ink screen apparatus, comprising: the ink screen, the electromagnetic plate, the processor, the memory, the communication interface and the communication bus are communicated with each other through the communication bus;

the electromagnetic plate is used for detecting a handwriting operation instruction generated on the ink screen by the electromagnetic pen,

B10. The ink screen device of B9, wherein the executable instructions cause the processor to:

B11. The ink screen device of B10, wherein the executable instructions cause the processor to:

and if a second gray value corresponding to the first gray value exists in the second gray value refreshing mode, responding to the note drawing operation of the user, drawing the handwritten note by using the second gray value, and refreshing the page by using the second gray value refreshing mode.

B12. The ink screen device of B11, wherein the executable instructions cause the processor to:

according to the note drawing operation of a user, identifying a drawing area, and taking the second gray value as a gray value corresponding to the drawing area;

looking up a table to obtain a driving waveform of the image to be displayed;

B13. The ink screen device of B11, wherein the executable instructions cause the processor to:

B14. The ink screen device of B11, wherein the executable instructions cause the processor to:

B15. The ink screen apparatus of any one of B9-B14, wherein the executable instructions cause the processor to:

identifying a target second gray scale refresh mode having a smallest gray scale from the plurality of second gray scale refresh modes;

B16. The ink screen apparatus of any one of B9-B15, wherein the executable instructions cause the processor to:

The invention also discloses: C17. a computer storage medium having stored therein at least one executable instruction for causing a processor to perform operations corresponding to the handwritten note display method of an ink screen device as described in any of a 1-A8.

Claims

1. A handwritten note display method of an ink screen device comprises the following steps:

2. The method of claim 1, wherein the determining whether the note color is displayable in a second grayscale refresh mode further comprises:

3. The method of claim 2, wherein the performing a page refresh in the second grayscale refresh mode in response to a note drawing operation by a user if the note color can be displayed in the second grayscale refresh mode further comprises:

4. The method of claim 3, wherein said drawing handwritten notes at the second grayscale value in response to a note drawing operation by a user and page refreshing in the second grayscale refresh mode further comprises:

looking up a table to obtain a driving waveform of the image to be displayed;

5. The method of claim 3, wherein if the ink-screen device is a color ink-screen device, the first gray scale value is plural;

if a second gray value corresponding to the first gray value exists in the second gray level refresh mode, responding to a note drawing operation of a user, drawing a handwritten note by using the second gray value, and performing page refresh by using the second gray level refresh mode further comprises: and if the second gray-scale value corresponding to each first gray-scale value exists in the second gray-scale refreshing mode, responding to the note drawing operation of the user, drawing the handwritten note by using the second gray-scale value corresponding to each first gray-scale value, and refreshing the page by adopting the second gray-scale refreshing mode.

6. The method of claim 3, wherein the first gray scale value is single if the ink-screen device is a black ink-screen device;

the determining whether a second gray scale value corresponding to the first gray scale value exists in a second gray scale refresh mode further includes: judging whether a second gray scale value corresponding to the single first gray scale value exists in a second gray scale refreshing mode or not;

7. The method of any of claims 1-6, wherein if the note color can be displayed in a plurality of second grayscale refresh modes;

8. The method according to any one of claims 1-7, wherein the method further comprises:

9. An ink screen apparatus, comprising: the ink screen, the electromagnetic plate, the processor, the memory, the communication interface and the communication bus are communicated with each other through the communication bus;

10. A computer storage medium having stored therein at least one executable instruction for causing a processor to perform operations corresponding to the handwritten note display method of an ink screen device of any one of claims 1-8.