WO2016149941A1

WO2016149941A1 - Drawing pen, electronic device and drawing method

Info

Publication number: WO2016149941A1
Application number: PCT/CN2015/075133
Authority: WO
Inventors: 陈磊
Original assignee: 华为技术有限公司
Priority date: 2015-03-26
Filing date: 2015-03-26
Publication date: 2016-09-29
Also published as: CN106471446B; CN106471446A

Abstract

A drawing pen, an electronic device and a drawing method. The drawing pen (110) comprises: a pen head (210), a housing (220), at least three pressure sensors (230), a processor (240) and a transceiver (250). The pen head (210) is half buried within the housing (220), the at least three pressure sensors (230) are fixed inside the housing (220), and the angle between the vertical lines of any two adjacent pressure sensors (230) to a central line of the pen head (210) is greater than 180^o. The at least three pressure sensors (230) are arranged around the pen head (210) in the drawing pen (110), pressure data collected by the pressure sensors is obtained, and drawing data required for drawing is sent to an electronic device (120) according to the obtained pressure data, so that the electronic device (120) draws an image according to the drawing data. Since the frequency with which the drawing pen (110) obtains the pressure data is not limited by the screen refresh rate of the electronic device (120), said frequency may be far higher than 60Hz, significantly improving the accuracy and drawing efficiency with which the electronic device draws an image.

Description

Drawing pen, electronic device and drawing method

Technical field

Embodiments of the present invention relate to the field of computer graphics, and in particular, to a drawing pen, an electronic device, and a drawing method.

Background technique

With the continuous development of electronic technology, the functions of portable electronic devices are becoming more and more powerful. For example, the user can directly draw an image on the touch screen of the electronic device with a finger or a stylus.

In the existing solution, the principle that the user directly performs image drawing on the touch screen is as follows: when the electronic device is in the image drawing state, the touch screen controller collects the contact information of the user on the touch screen, and reports the contact information collected successively to the electronic device. The processor of the device, the processor sequentially connects the coordinate points corresponding to the contact information reported by the touch screen controller in sequence through the lines, that is, the image drawn by the user on the touch screen can be obtained.

In the above existing solution, the frequency of reporting the contact information by the touch screen controller is limited by the refresh frequency of the touch screen, that is, each time the touch screen is refreshed, the touch screen controller can only report the contact information corresponding to one touch point, and the touch screen is The refresh frequency is mostly 60 Hz, which causes the accuracy of the image drawn by the electronic device to be low, and the drawing effect is poor.

Summary of the invention

In order to solve the problem that the frequency of the touch screen controller reporting the contact information in the prior art is limited by the refresh frequency of the touch screen, the accuracy of the drawing of the electronic device is low, and the drawing effect is poor, the embodiment of the present invention provides a drawing pen, Electronic equipment and drawing methods.

In a first aspect, a drawing pen is provided, the drawing pen comprising: a pen head, a casing, at least three pressure sensors, a processor, and a transceiver;

The pen tip is semi-buried in the outer casing, the at least three pressure sensors are fixed inside the outer casing, and an angle between any two adjacent pressure sensors to a vertical line of a center line of the pen tip Less than 180°;

The processor is electrically connected to the at least three pressure sensors and the transceiver, respectively;

The processor is configured to acquire pressure data collected by the at least three pressure sensors according to a preset sampling frequency;

The processor is further configured to control, according to the acquired pressure data, the transceiver to send drawing data to the electronic device, so that the electronic device draws an image according to the drawing data.

In a first possible implementation manner of the first aspect, the housing is provided with a holding identifier for indicating a gripping manner of holding the painting pen.

In a second possible implementation manner of the first aspect, the preset sampling frequency is greater than 60 Hz.

In conjunction with the first aspect, the first possible implementation of the first aspect, or the second possible implementation of the first aspect, in a third possible implementation of the first aspect, the drawing data is the pressure data.

In conjunction with the first aspect, the first possible implementation of the first aspect, or the second possible implementation of the first aspect, in a fourth possible implementation of the first aspect, the mapping data is N-1 intermediate The coordinates of the point, N ≥ 2;

The processor is further configured to acquire coordinates of the N-1 intermediate points according to the pressure data by:

The processor controls the transceiver to receive first and second coordinates acquired and transmitted by the electronic device in real time, where the first coordinate and the second coordinate are drawings of the pen tip on the electronic device The coordinates of the two points that the region passes through;

The processor according to the first coordinate, the second coordinate, and the first N-1 group of N sets of pressure data sequentially acquired within a time period in which the first coordinate and the second coordinate are received The pressure data calculates coordinates of the N-1 intermediate points that the pen tip sequentially passes between the first coordinate and the second coordinate.

In conjunction with the fourth possible implementation of the first aspect, in a fifth possible implementation of the first aspect, the at least three pressure sensors are included in each of the first N-1 sets of pressure data The two largest pressure values collected and the respective directions of the two pressure values;

The processor is specifically configured to calculate coordinates of the N-1 intermediate points that the pen tip sequentially passes between the first coordinate and the second coordinate by:

The processor calculates a linear distance L between the first coordinate and the second coordinate and a connection direction a from the first coordinate to the second coordinate;

Calculating the ith group according to the two pressure values included in the i-th group pressure data of the pre-N-1 group pressure data and the respective pressure values of the two pressure values included in the ith group pressure data When the pressure data is, the moving direction b of the writing head;

Calculating an angle γ between the connecting direction a and the moving direction b;

Calculating, according to the linear distance L and the angle γ, a distance L _i , L _i = L* cos γ / N of the movement of the tip between collecting the i-th group pressure data to collecting the (i+1)-th pressure data;

Calculating coordinates of the i-th intermediate point according to coordinates of the i-1th intermediate point, the moving direction b of the writing head, and the distance L _{i of the} moving of the writing head;

Wherein, 1≤i≤N-1; when i=1, the coordinates of the i-1th intermediate point are the first coordinates.

In conjunction with the fifth possible implementation of the first aspect, in a sixth possible implementation manner of the first aspect, the processor is further configured to calculate, according to the two pressure values included in the i-th group of pressure data The drawing strength of the i-th group of pressure data;

The processor is further configured to control, by the transceiver, the drawing strength corresponding to the first N-1 group pressure data when the transceiver is collected to the electronic device.

In a second aspect, an electronic device is provided, the electronic device comprising: a processor, a memory, and a transceiver; wherein the memory is for storing a plurality of instructions, the instructions being configured to be executed by the processor ;

The processor is configured to control the transceiver to receive drawing data sent by a drawing pen;

The processor is configured to draw an image according to the drawing data.

In a first possible implementation manner of the second aspect, the drawing data is pressure data collected by at least three pressure sensors in the drawing pen; when the processor draws an image according to the drawing data, the specific Used for:

Obtaining a first coordinate and a second coordinate, where the first coordinate and the second coordinate are coordinates of two points that the pen tip of the drawing pen passes in the drawing area of the electronic device; according to the first coordinate And the second coordinate and the first N-1 of the N sets of pressure data sequentially acquired by the drawing pen within a time period in which the coordinate acquiring unit acquires the first coordinate and the second coordinate Group pressure data, calculating coordinates of N-1 intermediate points sequentially passing between the first coordinate and the second coordinate, N≥2; drawing the first coordinate, the N-1 The coordinates of the intermediate points and the coordinate images between the two coordinate points corresponding to each of the second coordinates.

In conjunction with the first possible implementation of the second aspect, in a second possible implementation of the second aspect, the at least three pressure sensors are included in each of the first N-1 sets of pressure data The two largest pressure values collected and the respective directions of the two pressure values;

The processor calculates the pen tip sequentially between the first coordinate and the second coordinate When the coordinates of N-1 intermediate points have passed, they are specifically used to:

Calculating a linear distance L between the first coordinate and the second coordinate and a connection direction a from the first coordinate to the second coordinate; according to the front N-1 group pressure data The pressure value included in the ith group pressure data and the direction of the two pressure values included in the ith group pressure data, and calculating the moving direction b of the pen tip when collecting the ith group pressure data; Calculating an angle γ between the connection direction a and the moving direction b; calculating the pressure data of the i-th group to collect the pressure data of the (i+1)th group according to the linear distance L and the angle γ The distance L _i , L _i = L * cos γ / N between the movements of the writing head; calculating the i-th according to the coordinates of the i-1th intermediate point, the moving direction b of the writing head, and the distance L _{i of the} movement of the writing head The coordinates of the intermediate point;

In conjunction with the second possible implementation of the second aspect, in a third possible implementation of the second aspect, the processor is further configured to calculate, according to the two pressure values included in the i-th group pressure data Drawing force of the drawing pen when collecting the i-th group pressure data;

The processor is further configured to separately set two adjacent coordinate points of each group according to respective drawing strengths when the drawing pen collects each group of pressure data in the first N-1 group pressure data An image attribute of the connected image, the image attribute including at least one of a connection color and a connection thickness.

In a fourth possible implementation manner of the second aspect, the drawing data is coordinates of N-1 intermediate points between the first coordinate and the second coordinate; the first coordinate and the second coordinate are Describe the coordinates of two points that the pen head passes in the drawing area of the electronic device;

The processor is configured to draw an image according to the drawing data by:

The processor draws a line image between the first coordinate, the coordinates of the N-1 intermediate points, and the coordinate points corresponding to the second coordinates, and the adjacent two coordinate points of each group.

In conjunction with the fourth possible implementation of the second aspect, in a fifth possible implementation manner of the second aspect, the processor is further configured to control the transceiver to receive the pen sent by the pen Corresponding drawing force when collecting each group of pressure data in the front N-1 group pressure data;

In a third aspect, a drawing method is provided for use in a drawing pen, the method comprising:

Obtaining pressure data collected by at least three pressure sensors in the drawing pen according to a preset sampling frequency;

And controlling, according to the acquired pressure data, the transceiver in the drawing pen to send drawing data to the electronic device, so that the electronic device draws an image according to the drawing data.

In a first possible implementation of the third aspect, the drawing data is the pressure data.

In a second possible implementation manner of the third aspect, the drawing data is a coordinate of N-1 intermediate points, and N≥2; and the transmitting and receiving in the drawing pen is controlled according to the acquired pressure data. The device sends the drawing data to the electronic device, including:

Controlling, by the transceiver, a first coordinate and a second coordinate that are acquired and sent by the electronic device in real time, where the first coordinate and the second coordinate are successively passed by the pen tip in a drawing area of the electronic device The coordinates of two points;

Calculating the first N-1 group pressure data according to the first coordinate, the second coordinate, and the N sets of pressure data sequentially acquired within a time period in which the first coordinate and the second coordinate are received Describe the coordinates of the N-1 intermediate points that the pen head sequentially passes between the first coordinate and the second coordinate, N≥2;

Controlling the transceiver to transmit coordinates of the N-1 intermediate points to the electronic device.

With reference to the second possible implementation manner of the third aspect, in a third possible implementation manner of the third aspect, the at least three pressure sensors are included in each of the first N-1 group pressure data The two largest pressure values collected and the respective directions of the two pressure values; the according to the first coordinate, the second coordinate, and the receiving of the first coordinate and the second coordinate The first N-1 group pressure data in the N sets of pressure data sequentially acquired within the time period is calculated by calculating the N-1 intermediate points of the pen head sequentially passing between the first coordinate and the second coordinate Coordinates, including:

In conjunction with the third possible implementation of the third aspect, in a fourth possible implementation manner of the third aspect, the method further includes:

Calculating a drawing strength when collecting the i-th group pressure data according to the two pressure values included in the i-th group pressure data;

And controlling, by the transceiver, the drawing strength corresponding to each group of pressure data in the first N-1 group pressure data to be sent to the electronic device.

In a fourth aspect, a drawing method is provided for use in an electronic device, the method comprising:

Receiving drawing data sent by the drawing pen;

An image is drawn based on the drawing data.

In a first possible implementation manner of the fourth aspect, the drawing data is pressure data collected by at least three pressure sensors in the drawing pen;

The drawing an image according to the drawing data specifically includes:

Obtaining a first coordinate and a second coordinate, where the first coordinate and the second coordinate are coordinates of two points that the pen tip of the drawing pen passes successively in the drawing area of the electronic device;

Determining the first N- of the N sets of pressure data sequentially acquired by the drawing pen according to the first coordinate, the second coordinate, and the time period during which the first coordinate and the second coordinate are acquired a set of pressure data, calculating the coordinates of the N-1 intermediate points that the pen tip passes between the first coordinate and the second coordinate, N≥2;

And drawing a line image of the first coordinate, the coordinates of the N-1 intermediate points, and the coordinate points corresponding to the second coordinates, and the adjacent two coordinate points of each group.

With reference to the first possible implementation manner of the fourth aspect, in a second possible implementation manner of the fourth aspect, the at least three pressure sensors are included in each group of the first N-1 group pressure data The two largest pressure values collected and the respective directions of the two pressure values; the calculating the N-1 intermediate points of the pen tip passing between the first coordinate and the second coordinate Coordinates, including:

In conjunction with the second possible implementation of the fourth aspect, in a third possible implementation manner of the fourth aspect, the method further includes:

Calculating a drawing strength of the drawing pen when collecting the i-th group pressure data according to two pressure values included in the i-th group pressure data;

And respectively setting an image of the connection image between the two adjacent coordinate points of each group according to the drawing strength corresponding to each group of pressure data in the first N-1 group pressure data of the drawing pen An attribute, the image attribute including at least one of a connection color and a connection thickness.

In a fourth possible implementation manner of the fourth aspect, the drawing data is a coordinate of N-1 intermediate points between the first coordinate and the second coordinate; the first coordinate and the second coordinate are Describe the coordinates of two points that the pen head passes in the drawing area of the electronic device;

The drawing an image according to the drawing data comprises:

In conjunction with the fourth possible implementation of the fourth aspect, in a fifth possible implementation manner of the fourth aspect, the method further includes:

Receiving, by the drawing pen, the drawing strength corresponding to each group of pressure data in the first N-1 group pressure data sent by the drawing pen;

The beneficial effects of the technical solutions provided by the embodiments of the present invention are:

Obtaining pressure data collected by the pressure sensor by setting at least three pressure sensors around the pen head in the drawing pen, and sending drawing data required for drawing to the electronic device according to the acquired pressure data, so that the electronic device draws according to the drawing data The image, because the frequency of the pressure data acquired by the pen is not limited by the screen refresh rate of the electronic device, can be much higher than 60 Hz, which can greatly improve the accuracy and drawing effect of the image drawn by the electronic device.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in light of the inventive work.

1 is a schematic diagram of an implementation environment involved in a drawing method provided by some embodiments of the present invention;

2 is a structural diagram of a drawing pen provided by an embodiment of the present invention;

3 is a structural diagram of a drawing pen according to another embodiment of the present invention;

4 is a schematic diagram of coordinate determination of an intermediate point according to another embodiment of the present invention;

FIG. 5 is a block diagram of an electronic device according to an embodiment of the present invention; FIG.

FIG. 6 is a block diagram of a drawing apparatus according to an embodiment of the present invention; FIG.

FIG. 7 is a flowchart of a method for drawing a method according to an embodiment of the present invention; FIG.

FIG. 8 is a flowchart of a method for drawing a method according to an embodiment of the present invention; FIG.

FIG. 9 is a flowchart of a method for drawing a method according to another embodiment of the present invention; FIG.

FIG. 10 is a flowchart of a method for drawing a method according to another embodiment of the present invention.

detailed description

The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

Please refer to FIG. 1 , which is a schematic diagram showing an implementation environment involved in a drawing method provided by some embodiments of the present invention. As shown in FIG. 1, the implementation environment includes a drawing pen 110 and an electronic device 120.

The electronic device 120 may be a device such as a smart phone, a tablet computer, or an e-book reader. The drawing pen 110 and the electronic device 120 are connected by wire or wirelessly.

According to various embodiments of the present invention, a pressure sensor is disposed in the drawing pen, and the drawing pen collects pressure data received by the pressure sensor during the drawing process according to a certain sampling frequency, and calculates the drawing pen according to the pressure value and direction in the pressure data. The electronic device draws an image according to the calculation result each time the movement data and the drawing force are collected. The calculation process may be completed by a drawing pen, or may be completed by an electronic device, or may be completed by a drawing pen and an electronic device respectively. part of it. The higher the sampling frequency of the drawing pen, the closer the image drawn by the electronic device is to the moving trajectory of the drawing pen, and the sampling frequency of the drawing pen is not affected by the screen refresh rate of the electronic device, and therefore, the embodiments of the present invention are The solution can greatly improve the drawing compared to the scheme of drawing directly in the touch screen. effect.

Please refer to FIG. 2, which shows a structural diagram of a drawing pen provided by an embodiment of the present invention. The drawing pen may be the drawing pen 110 in the drawing system shown in Fig. 1, wherein the left half of Fig. 2 is a longitudinal sectional view of the drawing pen, and the right half is a longitudinal sectional view of the writing head and the pressure sensor portion. As shown in FIG. 2, the pen can include: a pen tip 210, a housing 220, at least three pressure sensors 230, a processor 240, and a transceiver 250;

The pen tip 210 is half buried in the outer casing 220, and the at least three pressure sensors 230 are fixed inside the outer casing 220, and any two adjacent pressure sensors are between the vertical lines of the center line of the pen tip 210. The angle α is less than 180°;

The processor 240 is electrically connected to the at least three pressure sensors 230 and the transceiver 250 respectively;

The processor 240 is configured to acquire pressure data collected by the at least three pressure sensors 230 according to a preset sampling frequency;

The processor 240 is further configured to control, according to the acquired pressure data, the transceiver 250 to send drawing data to the electronic device, so that the electronic device draws an image according to the drawing data.

In summary, the drawing pen provided by the embodiment of the present invention acquires pressure data collected by the pressure sensor by setting at least three pressure sensors around the pen head in the drawing pen, and sends a drawing to the electronic device according to the acquired pressure data. The required drawing data, so that the electronic device draws an image according to the drawing data, because the frequency of the pressure data acquired by the drawing pen is not limited by the screen refresh rate of the electronic device, and can be much higher than 60 Hz, which can greatly improve the drawing of the image by the electronic device. Precision and rendering effects.

Based on the above-described drawing pen shown in FIG. 2, please refer to FIG. 3, which shows a structural diagram of a drawing pen according to another embodiment of the present invention. The drawing pen may be the drawing pen 110 in the drawing system shown in Fig. 1, wherein the left half of Fig. 3 is a longitudinal sectional view of the drawing pen, and the right half is a longitudinal sectional view of the writing head and the pressure sensor portion. As shown in FIG. 3, the pen can include: a pen tip 210, a housing 220, at least three pressure sensors 230, a processor 240, and a transceiver 250;

The connection relationship between the pen tip 210, the outer casing 220, the at least three pressure sensors 230, the processor 240, and the transceiver 250 and the operation steps performed by the processor 20 are the same as those of the drawing pen shown in FIG. 2 above. The description in an embodiment is not described herein again.

Optionally, the housing 220 is provided with a holding identifier 221, and the holding identifier 221 is used to refer to Show the grip form of the drawing pen.

In order to ensure that the direction of the pressure sensed by the pressure sensor is known, the user can be instructed to hold the pen with a fixed hand grip form, for example, by adding a groove to the brush to inform the user of the manner of holding the object, thereby ensuring The grip form of the user and the corresponding direction of the sensor are the same every time the user holds the pen.

Optionally, the preset sampling frequency is greater than 60 Hz.

Since the frequency at which the pen obtains pressure data is not limited by the screen refresh rate of the electronic device, the sampling frequency can theoretically be set very high, for example, the sampling frequency can be set to 1000 Hz.

Optionally, the drawing data is a coordinate of N-1 intermediate points, and N≥2; the processor is further configured to acquire coordinates of the N-1 intermediate points according to the pressure data by: :

The processor 240 controls the transceiver to receive the first coordinate and the second coordinate acquired and sent by the electronic device in real time, where the first coordinate and the second coordinate are the writing head of the electronic device in the electronic device. The coordinates of the two points in the drawing area.

The drawing area of the electronic device may be a designated area in the touch screen of the electronic device, or the drawing area may also be a drawing area in the drawing board associated with the electronic device. During the sliding of the pen tip of the drawing pen in the drawing area, the touch screen or the drawing board can report the contact information to the electronic device, and the electronic device can acquire the coordinates of the two points that the pen tip slides in the drawing area, the electronic device. Each time a coordinate is acquired, the coordinates to be acquired are sent to the drawing pen in real time.

The processor 240 according to the first coordinate, the second coordinate, and the first N-1 of the N sets of pressure data sequentially acquired within a time period in which the first coordinate and the second coordinate are received The group pressure data is used to calculate coordinates of N-1 intermediate points that the pen tip sequentially passes between the first coordinate and the second coordinate.

Optionally, each set of pressure data in the front N-1 group pressure data includes a maximum of two pressure values collected by the at least three pressure sensors and a direction of each of the two pressure values.

Among them, when three pressure sensors collect pressure data, only two pressure sensors can collect effective pressure values, and the two effective pressure values must be the two largest of the pressure values collected by the three pressure sensors. The value, even if only one pressure sensor collects the pressure value is not 0, the other two pressure sensors collect the pressure value is 0, it can be considered that one of the two largest values is 0, in the default user according to In the case of the indicated fixed grip style to hold the pen, only the three pressure sensors in the pen need to be numbered separately, that is, the direction of the effective pressure value can be known. Correspondingly, each set of pressure data acquired by the processor contains two effective pressures. The force value and the direction of the two effective pressure values.

Each time the pen receives a new coordinate, that is, the first N-1 group of pressure data collected by the four pressure sensors from the time the last coordinate is received to the time the new coordinate is received, according to the two coordinates and the The pre-N-1 group pressure data, that is, the coordinates of N-1 intermediate points between the two coordinates can be determined in turn from the previous coordinate. The drawing pen sends the coordinates of the determined N-1 intermediate points to the electronic device, and the electronic device can draw a sliding track between the two coordinates of the writing head.

Optionally, the processor 340 is configured to calculate coordinates of the N-1 intermediate points that the pen tip sequentially passes between the first coordinate and the second coordinate by:

Calculating the ith group pressure according to the two pressure values included in the i-th group pressure data of the pre-N-1 group pressure data and the respective pressure values of the two pressure values included in the ith group pressure data Data, the direction of movement of the pen head b;

Wherein, 1≤i≤N; when i=1, the coordinates of the i-1th intermediate point are the first coordinates.

Please refer to FIG. 4 , which is a schematic diagram of coordinate determination of an intermediate point according to another embodiment of the present invention; taking the first coordinate as the coordinate A and the second coordinate as the coordinate B, where the coordinate B is newly received. Coordinate, coordinate A is the last received coordinate, and the drawing pen determines the coordinates of the intermediate point according to the two coordinates and the first N-1 group pressure data among the N sets of pressure data acquired between the received two coordinates, the method Can be as follows:

1) Calculate the linear distance L between the coordinate A and the coordinate B, and the connection direction a from the coordinate A to the coordinate B;

2) It is assumed that the connection distance between the adjacent two intermediate points of each group is equal on the line connecting the coordinate A and the coordinate B, and the first set of pressure data is obtained when the writing head is at the coordinate A, and the Nth group is obtained. When the pressure data is in the coordinate B, there are N-1 intermediate points between the coordinate A and the coordinate B. Among the coordinate A, the coordinate B and the N-1 intermediate points, the connection between the adjacent two points in each group is The projection distance on the line between the coordinate A and the coordinate B is L/N.

It should be noted that there is a certain time difference between the acquisition of a coordinate from the electronic device and the receipt of the coordinate by the drawing pen. In order to ensure the accuracy of the drawing, the average value of the time difference may be measured in advance, and the average value of the time difference is estimated. The relationship between the sampling periods of the drawing pen acquisition pressure data determines the pressure data corresponding to the received coordinates based on the relationship between the average value and the sampling period. For example, suppose the average value of the time difference is approximately equal to three sampling periods. That is, when the drawing pen receives the coordinate A, the drawing pen has collected three sets of pressure data after the electronic device acquires the coordinate A. At this time, the drawing pen can The coordinate A is determined as the coordinates of the point through which the pen tip passes when collecting the fourth group of pressure data in the existing pressure data, and the same set of pressure data corresponding to the coordinate B can also be determined.

3) When determining the coordinates of the first intermediate point, it can be calculated from the coordinate A according to the two pressure values included in the first group pressure data and the two pressure values included in the first group pressure data. The movement direction b _{1 of the} writing head in the first group of pressure data; the angle γ ₁ between the connection direction a and the moving direction b ₁ is calculated; the movement of the writing head between the collection of the first group of pressure data and the acquisition of the second group of pressure data is calculated. The distance L ₁ = L * cos γ ₁ / N; the coordinates of the first intermediate point are calculated from the coordinates A, the moving directions b ₁ and L _{1 of the} writing head.

4) When determining the coordinates of the i-th intermediate point, starting from the i-1th intermediate point, the two pressure values included in the i-th group pressure data and the two pressure values included in the i-th group pressure data are respectively direction, is calculated in the acquisition of pressure data group i B _i of the moving direction of the tip; gamma] _i the angle between the direction of a connection is calculated and the movement direction B _i; i-th group in the acquisition of calculating pressure data to the acquisition of the i + 1 The distance of the movement of the pen between the group pressure data is L _i = L * cos γ _i / N; the coordinates of the i-th intermediate point are calculated from the coordinates A, the moving directions b _i and L _{i of the} pen tip. Where 2 ≤ i ≤ N-1.

It should be noted that the solution shown in the embodiment of the present invention is described by taking as an example assuming that the connection distance between the adjacent two intermediate points of each group is equal on the connecting line between the coordinate A and the coordinate B. In practical applications, there may be other methods of calculating the coordinates of the intermediate point based on the pressure data. For example, it can be assumed that the distance between each two intermediate points is equal.

Optionally, the processor 340 is further configured to calculate a drawing strength when collecting the i-th group pressure data according to the two pressure values included in the i-th group pressure data;

The processor 340 is further configured to control, by the transceiver, the drawing strength corresponding to the first N-1 group of pressure data to be sent to the electronic device.

In the embodiment of the present invention, the drawing pen can also calculate the drawing strength when collecting each set of pressure data according to the value of the pressure data. Specifically, for example, if the two pressure values in the i-th group pressure data are F1 and F2, respectively, The drawing velocity F can be obtained by the following formula:

When the electronic device receives the drawing strength, the thickness of the line between the i-1th intermediate point and the ith intermediate point or the depth of the color may be determined according to the drawing strength.

Optionally, the drawing data is the pressure data.

In the solution shown in the embodiment of the present invention, the step of determining the coordinates of the N-1 intermediate points and the drawing force may also be performed by the electronic device, and the pen only sends the acquired pressure data to the electronic device in real time.

It should be noted that the foregoing embodiment of the present invention is described by taking only three pressure sensors as an example. Preferably, the number of pressure sensors can also be increased to improve accuracy and reliability. For example, four pressure sensors can be set, and The pressure sensors are distributed around the tip of the pen in a cross shape; or, in practical applications, in order to avoid the inability of the pen to work due to a partial pressure sensor failure, the pen can also be set with 6, 8, or 12 pressures. Sensors, etc.; alternatively, multiple sensor assemblies can be provided in the pen, each sensor component containing at least three pressure sensors, and when the pressure sensor of one sensor component fails, other sensor components can be used to collect pressure data. The embodiment of the present invention does not limit the number of pressure sensors, as long as the collected pressure data can satisfy the calculation of the moving direction of the writing head and the drawing strength.

In addition, the drawing pen provided by the embodiment of the present invention further calculates the drawing strength when collecting each group of pressure data according to the pressure value in the pressure data, and sends the drawing strength when collecting each group of pressure data to the electronic device, The electronic device determines the thickness and color of the line according to the drawing strength, thereby further improving the drawing effect of the image.

Please refer to FIG. 5, which shows a block diagram of an electronic device according to an embodiment of the present invention. The drawing pen may be the electronic device 120 in the drawing system shown in FIG. 1, and the electronic device may be a device such as a smart phone, a tablet computer, an e-book reader, or a personal computer. The electronic device can include a bus 501, and a processor 502, a memory 503, and a transceiver 504 coupled to the bus. The memory 503 is configured to store a plurality of instructions, the instructions being configured to be executed by the processor 502;

The processor 502 is configured to control the transceiver 504 to receive drawing data sent by a drawing pen;

The processor 502 is configured to draw an image according to the drawing data.

Optionally, the drawing data is pressure data collected by at least three pressure sensors in the drawing pen; when the image is drawn according to the drawing data, the processor 502 is specifically configured to:

Optionally, each set of pressure data of the first N-1 group pressure data includes a maximum two pressure values collected by the at least three pressure sensors and a direction of each of the two pressure values;

The processor 502 is specifically configured to: when calculating the coordinates of the N-1 intermediate points that the pen tip passes between the first coordinate and the second coordinate;

The method for determining the coordinates of the intermediate point between the two coordinates according to the pressure data is similar to the method for determining the coordinates of the intermediate point by the drawing pen in the embodiment shown in FIG. 3. For details, please refer to the corresponding part of FIG. Description, no longer repeat here.

It should be noted that, in the solution shown in the embodiment of the present invention, the pressure data is sent to the electronic device by the drawing pen, wherein there is a time difference between the collection of the pressure data from the drawing pen and the receipt of the pressure data by the electronic device, that is, the electronic device acquires When the first coordinate or the second coordinate is reached, the pressure data corresponding to the acquired coordinates has not been received yet, so the average value of the time difference is also equal to three For example, the sample cycle is different from the description in the embodiment shown in FIG. 4, when the pressure data corresponding to the coordinates collected by the electronic device is determined, the electronic device may acquire the third group after the coordinate A is acquired. The pressure data is determined as the pressure data corresponding to the coordinate A. Similarly, the third group of pressure data received after the acquisition of the coordinate B may be determined as the pressure data corresponding to the coordinate B.

Optionally, the processor 502 is further configured to calculate, according to the two pressure values included in the i-th group pressure data, a drawing strength of the drawing pen when collecting the i-th group pressure data;

The processor 502 is further configured to separately set two adjacent coordinates of each group according to respective drawing strengths when the drawing pen collects each group of pressure data in the first N-1 group pressure data. An image attribute of the connected image between the points, the image attribute including at least one of a connection color and a connection thickness.

The method for calculating the drawing strength of the drawing pen when collecting each group of pressure data according to the pressure value included in the pressure data is similar to the method for calculating the drawing strength by the drawing pen in the corresponding embodiment of FIG. 3, and details are not described herein. .

Optionally, the drawing data is coordinates of N-1 intermediate points between the first coordinate and the second coordinate; the first coordinate and the second coordinate are the pen tip in the electronic device a coordinate of two points passing through the drawing area; the processor 502 is configured to acquire and control the transceiver 504 to send the first coordinate and the second coordinate to the drawing pen in real time;

The processor 502 is configured to draw an image according to the drawing data by:

The processor 502 draws a line image of the first coordinate, the coordinates of the N-1 intermediate points, and the coordinate points corresponding to the second coordinate, and the adjacent two coordinate points of each group .

Optionally, the processor 502 is further configured to control the transceiver 504 to receive the pen sent by the pen, and the pens respectively collect the pressure data of each group in the first N-1 group of pressure data. Corresponding drawing strength;

The method for determining the coordinates of the intermediate point between the two coordinates according to the pressure data, and the specific steps of the method for calculating the drawing strength of the drawing pen when collecting each set of pressure data, please refer to the embodiment shown in FIG. 3 . The description in the description will not be repeated here.

In summary, the electronic device provided by the embodiment of the present invention is disposed around the writing head in the drawing pen. The at least three pressure sensors are disposed, and the electronic device receives the drawing data sent by the drawing pen according to the pressure data collected by the four pressure sensors, and the image is drawn according to the screen refresh rate of the electronic device. Far above 60Hz, it can greatly improve the accuracy and rendering effect of the image drawn by electronic devices.

In addition, the electronic device provided by the embodiment of the present invention further calculates the drawing strength when collecting each set of pressure data according to the pressure value in the pressure data, or obtains the drawing strength calculated by the drawing pen, and determines the thickness of the line according to the drawing strength. And color, further improving the image rendering effect.

Please refer to FIG. 6, which shows a block diagram of a drawing apparatus provided by an embodiment of the present invention. The drawing device can be used in the electronic device 120 of the drawing system as shown in FIG. The drawing device can include:

a drawing data receiving module 601, configured to receive drawing data sent by the drawing pen;

The image drawing module 602 is configured to draw an image according to the drawing data.

Optionally, the drawing data is pressure data collected by at least three pressure sensors in the drawing pen; when the image drawing module draws an image according to the drawing data, specifically:

And according to the first coordinate, the second coordinate, and the time period in which the coordinate acquiring unit acquires the first coordinate and the second coordinate, the pen sets sequentially acquire N sets of pressure data. The first N-1 group pressure data in the middle, calculating the coordinates of the N-1 intermediate points that the pen head sequentially passes between the first coordinate and the second coordinate, N≥2;

The image drawing module is specifically configured to: when calculating coordinates of the N-1 intermediate points that the pen tip passes between the first coordinate and the second coordinate;

Optionally, the image drawing module 602 is further configured to calculate, according to the two pressure values included in the i-th group pressure data, a drawing strength of the drawing pen when collecting the i-th group pressure data;

The image drawing module 602 is further configured to separately set two adjacent groups according to respective drawing strengths when the drawing pen collects each group of pressure data in the first N-1 group pressure data. An image attribute of a line image between coordinate points, the image attribute including at least one of a connection color and a connection thickness.

Optionally, the drawing data is coordinates of N-1 intermediate points between the first coordinate and the second coordinate; the first coordinate and the second coordinate are drawings of the pen tip on the electronic device The coordinates of the two points that the region passes through;

The image drawing module 602 is configured to draw an image according to the drawing data by:

The image drawing module 602 is configured to draw the coordinates of the first coordinate, the coordinates of the N-1 intermediate points, and the corresponding coordinate points of the second coordinate, between two adjacent coordinate points of each group Wired image.

Optionally, the device further includes: a drawing strength receiving module 603 and an attribute setting module 604:

The drawing strength receiving module 603 is configured to receive, according to the drawing pen, the drawing strength corresponding to each group of pressure data in the first N-1 group pressure data sent by the drawing pen;

The attribute setting module 604 is configured to separately set two adjacent coordinates of each group according to respective drawing strengths when the drawing pen collects each group of pressure data in the first N-1 group pressure data. An image attribute of the connected image between the points, the image attribute including at least one of a connection color and a connection thickness.

Wherein, the drawing pen determines the coordinates of the intermediate point between the two coordinates according to the pressure data, For the specific steps of the method for calculating the drawing strength when collecting each set of pressure data, please refer to the description in the embodiment shown in FIG. 3, and details are not described herein again.

In summary, the drawing apparatus provided by the embodiment of the present invention provides at least three pressure sensors around the writing head in the drawing pen, and the electronic device receives the drawing data sent by the drawing pen according to the pressure data collected by the four pressure sensors. Image drawing, because the frequency of the pressure data obtained by the pen is not limited by the screen refresh rate of the electronic device, it can be much higher than 60 Hz, which can greatly improve the accuracy and drawing effect of the image drawn by the electronic device.

In addition, the drawing device provided by the embodiment of the present invention further calculates the drawing strength when collecting each set of pressure data according to the pressure value in the pressure data, or obtains the drawing strength calculated by the drawing pen, and determines the thickness of the line according to the drawing strength. And color, further improving the image rendering effect.

Please refer to FIG. 7, which is a flowchart of a method for drawing a method according to an embodiment of the present invention. This drawing method can be used in the drawing pen 110 of the drawing system shown in FIG. The drawing method can include:

Step 701: Acquire pressure data collected by at least three pressure sensors in the drawing pen according to a preset sampling frequency.

Step 702: Control, according to the acquired pressure data, the transceiver in the drawing pen to send drawing data to the electronic device, so that the electronic device draws an image according to the drawing data.

In summary, the drawing method provided by the embodiment of the present invention acquires pressure data collected by the pressure sensor by setting at least three pressure sensors around the pen head in the drawing pen, and sends a drawing to the electronic device according to the acquired pressure data. The required drawing data, so that the electronic device draws an image according to the drawing data, because the frequency of the pressure data acquired by the drawing pen is not limited by the screen refresh rate of the electronic device, and can be much higher than 60 Hz, which can greatly improve the drawing of the image by the electronic device. Precision and rendering effects.

Please refer to FIG. 8 , which is a flowchart of a method for drawing a method according to an embodiment of the present invention. The drawing method can be used in the electronic device 120 of the drawing system as shown in FIG. The drawing method can include:

Step 801: Receive drawing data sent by the drawing pen, where the drawing data is that the drawing pen acquires pressure data collected by at least three pressure sensors in the drawing pen according to a preset sampling frequency, and sends the pressure data according to the pressure data.

Step 802, drawing an image according to the drawing data.

In summary, the drawing method provided by the embodiment of the present invention provides at least three pressure sensors around the writing head in the drawing pen, and the electronic device receives the drawing data sent by the drawing pen according to the pressure data collected by the four pressure sensors. Image drawing, because the frequency of the pressure data obtained by the pen is not limited by the screen refresh rate of the electronic device, it can be much higher than 60 Hz, which can greatly improve the accuracy and drawing effect of the image drawn by the electronic device.

Please refer to FIG. 9, which is a flowchart of a method for drawing a method according to another embodiment of the present invention. This drawing method can be used in the drawing system as shown in FIG. The step of calculating the coordinates of the intermediate point and drawing the velocity is performed by a pen, and the drawing method may include:

Step 901: The drawing pen acquires pressure data collected by at least three pressure sensors in the drawing pen according to a preset sampling frequency.

Step 902: The pen control transceiver receives the first coordinate and the second coordinate acquired and transmitted by the electronic device in real time.

The first coordinate and the second coordinate are coordinates of two points that the pen tip passes through in the drawing area of the electronic device.

Step 903: The pen is calculated according to the first coordinate, the second coordinate, and the first N-1 group pressure data in the N sets of pressure data sequentially acquired within the time period in which the first coordinate and the second coordinate are received. The coordinates of the N-1 intermediate points that the pen head passes between the first coordinate and the second coordinate, N≥2.

Specifically, each of the pressure data of the first N-1 group pressure data includes the maximum two pressure values collected by the at least three pressure sensors and the respective directions of the two pressure values; a linear distance L between a coordinate and the second coordinate and a connection direction a from the first coordinate to the second coordinate; according to the i-th group pressure data in the front N-1 group pressure data Calculating the moving direction b of the pen head when collecting the i-th group pressure data by calculating the direction of the two pressure values and the two pressure values included in the i-th group pressure data; calculating the connecting direction a and the moving direction b The angle γ between the two; according to the straight line distance L and the angle γ, calculate the distance L _i , L _i = L * cos γ of the movement of the tip between the acquisition of the i-th group pressure data to the acquisition of the i+1th group of pressure data /N; calculating the coordinates of the i-th intermediate point according to the coordinates of the i-1th intermediate point, the moving direction b of the writing head, and the distance L _{i of the} moving of the writing head;

Step 904, the pen controls the transceiver to transmit the coordinates of the N-1 intermediate points to the electronic device.

Step 905: The electronic device draws a line image of the first coordinate, the coordinates of the N-1 intermediate points, and the coordinate points corresponding to the second coordinates, and the adjacent two coordinate points of each group.

Step 906: The drawing pen controls the transceiver to send the corresponding drawing strength to the electronic device when collecting the pressure data of each group in the previous N-1 group pressure data.

Specifically, the drawing pen can calculate the drawing strength when collecting the i-th group pressure data according to the two pressure values included in the i-th group pressure data.

Step 907: The electronic device respectively sets a connection image between the two adjacent coordinate points of each group according to the drawing strength corresponding to each group of pressure data in the first N-1 group pressure data. Image attribute, the image attribute includes at least one of a connection color and a connection thickness.

In summary, the drawing method provided by the embodiment of the present invention acquires pressure data collected by the pressure sensor by setting at least three pressure sensors around the pen head in the drawing pen, and according to the acquired pressure data and the electronic device. Two coordinate points are calculated, and each intermediate point between the two coordinate points is calculated, and the electronic device draws an image according to the coordinates of the two coordinate points and each intermediate point, because the frequency of the pressure data acquired by the drawing pen is not affected by the screen of the electronic device The refresh rate limit can be much higher than 60 Hz, which can greatly improve the accuracy and drawing effect of the image drawn by the electronic device.

In addition, in the drawing method provided by the embodiment of the present invention, the drawing pen further calculates the drawing strength when collecting each group of pressure data according to the pressure value in the pressure data, and sends the drawing strength when collecting each group of pressure data to the electronic device. The electronic device determines the thickness and color of the line according to the drawing strength, thereby further improving the drawing effect of the image.

Please refer to FIG. 10, which is a flowchart of a method for drawing a method according to another embodiment of the present invention. This drawing method can be used in the drawing system as shown in FIG. The step of calculating the coordinates of the intermediate point and drawing the velocity is performed by an electronic device, and the drawing method may include:

In step 1001, the drawing pen acquires pressure data collected by at least three pressure sensors in the drawing pen according to a preset sampling frequency.

In step 1002, the pen control transceiver transmits the pressure data to the electronic device.

Step 1003: The electronic device acquires the first coordinate and the second coordinate.

Wherein the first coordinate and the second coordinate are the writing head of the drawing pen in a drawing area of the electronic device The coordinates of the two points passing through the domain.

Step 1004: The electronic device sequentially obtains the first N- of the N sets of pressure data according to the first coordinate, the second coordinate, and the time period during which the first coordinate and the second coordinate are acquired. A set of pressure data is used to calculate the coordinates of the N-1 intermediate points that the pen head passes between the first coordinate and the second coordinate, N≥2.

Specifically, each of the pressure data of the first N-1 group pressure data includes the maximum two pressure values collected by the at least three pressure sensors and the respective directions of the two pressure values. The electronic device calculates a linear distance L between the first coordinate and the second coordinate and a connection direction a from the first coordinate to the second coordinate; according to the i-th in the front N-1 group pressure data The two pressure values included in the group pressure data and the respective directions of the two pressure values included in the pressure data of the i-th group are calculated, and the moving direction b of the writing head is calculated when the pressure data of the i-th group is collected; calculating the connecting direction a And an angle γ between the movement direction b; calculating a distance L _i , L of the movement of the tip between the collection of the i-th group pressure data to the acquisition of the (i+1)th group of pressure data according to the linear distance L and the angle γ _i = L * cos γ / N; calculating the coordinates of the i-th intermediate point according to the coordinates of the i-1th intermediate point, the moving direction b of the writing head, and the distance L _{i of the} moving of the writing head;

Step 1005: The electronic device draws the first coordinate, the coordinates of the N-1 intermediate points, and the connection image between the two adjacent coordinate points in the coordinate points corresponding to the second coordinate.

Step 1006: The electronic device calculates, according to the pre-N-1 group pressure data, corresponding drawing strengths when the pens collect the pressure data of each group in the pre-N-1 group pressure data.

Specifically, the electronic device may calculate the drawing strength of the pen when collecting the i-th group pressure data according to the two pressure values included in the i-th group pressure data.

Step 1007: The electronic device separately sets a connection image between the two adjacent coordinate points of each group according to the drawing strength corresponding to each group of pressure data in the first N-1 group pressure data. Image attribute, the image attribute includes at least one of a connection color and a connection thickness.

In addition, the drawing method provided by the embodiment of the present invention further calculates the drawing strength when collecting each set of pressure data according to the pressure value in the pressure data, or obtains the drawing strength calculated by the drawing pen, and determines the thickness of the line according to the drawing strength. And color, further improving the image rendering effect.

A person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium. The storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalents, improvements, etc., which are within the spirit and scope of the present invention, should be included in the protection of the present invention. Within the scope.

Claims

A drawing pen, comprising: a pen head, a casing, at least three pressure sensors, a processor, and a transceiver;

The pen tip is semi-buried in the outer casing, the at least three pressure sensors are fixed inside the outer casing, and an angle between any two adjacent pressure sensors to a vertical line of a center line of the pen tip Less than 180°;

The processor is electrically connected to the at least three pressure sensors and the transceiver, respectively;

The processor is configured to acquire pressure data collected by the at least three pressure sensors according to a preset sampling frequency;

The processor is further configured to control, according to the acquired pressure data, the transceiver to send drawing data to the electronic device, so that the electronic device draws an image according to the drawing data.
The drawing pen according to claim 1, wherein the outer casing is provided with a gripping indicator for indicating a gripping style of holding the painting pen.
The drawing pen of claim 1 wherein said predetermined sampling frequency is greater than 60 Hz.
A drawing pen according to any one of claims 1 to 3, wherein said drawing data is said pressure data.
The drawing pen according to any one of claims 1 to 3, wherein the drawing data is a coordinate of N-1 intermediate points, N≥2;

The processor is further configured to acquire coordinates of the N-1 intermediate points according to the pressure data by:

The processor controls the transceiver to receive first and second coordinates acquired and transmitted by the electronic device in real time, where the first coordinate and the second coordinate are the drawing area of the pen tip in the electronic device The coordinates of the two points passed successively;

The processor according to the first coordinate, the second coordinate, and the first N-1 group of N sets of pressure data sequentially acquired within a time period in which the first coordinate and the second coordinate are received The pressure data calculates coordinates of the N-1 intermediate points that the pen tip sequentially passes between the first coordinate and the second coordinate.
The drawing pen according to claim 5, wherein each of the first N-1 sets of pressure data includes a maximum of two pressure values collected by the at least three pressure sensors and Describe the respective directions of the two pressure values;

The processor is specifically configured to calculate coordinates of the N-1 intermediate points that the pen tip sequentially passes between the first coordinate and the second coordinate by:

The processor calculates a linear distance L between the first coordinate and the second coordinate and a connection direction a from the first coordinate to the second coordinate;

Calculating the ith group pressure according to the two pressure values included in the i-th group pressure data of the pre-N-1 group pressure data and the respective pressure values of the two pressure values included in the ith group pressure data Data, the direction of movement of the pen head b;

Calculating an angle γ between the connecting direction a and the moving direction b;

Calculating, according to the linear distance L and the angle γ, a distance L i , L i = L* cos γ / N of the movement of the tip between collecting the i-th group pressure data to collecting the (i+1)-th pressure data;

Calculating coordinates of the i-th intermediate point according to coordinates of the i-1th intermediate point, the moving direction b of the writing head, and the distance L i of the moving of the writing head;

Wherein, 1≤i≤N-1; when i=1, the coordinates of the i-1th intermediate point are the first coordinates.
A drawing pen according to claim 6, wherein

The processor is further configured to calculate a drawing strength when collecting the i-th group pressure data according to the two pressure values included in the i-th group pressure data;

The processor is further configured to control, by the transceiver, the drawing strength corresponding to the first N-1 group pressure data when the transceiver is collected to the electronic device.
An electronic device, comprising: a processor, a memory, and a transceiver; wherein the memory is for storing a plurality of instructions, the instructions being configured to be executed by the processor;

The processor is configured to control the transceiver to receive drawing data sent by a drawing pen;

The processor is configured to draw an image according to the drawing data.
The electronic device according to claim 8, wherein the drawing data is pressure data collected by at least three pressure sensors of the drawing pen; when the processor draws an image according to the drawing data, Specifically used for:

Obtaining a first coordinate and a second coordinate, where the first coordinate and the second coordinate are coordinates of two points that the pen tip of the drawing pen passes in the drawing area of the electronic device; according to the first coordinate And the second coordinate and the first N-1 group pressure data in the N sets of pressure data sequentially acquired by the drawing pen within a time period in which the first coordinate and the second coordinate are acquired, and the calculation unit Describe the coordinates of the N-1 intermediate points that the pen head passes between the first coordinate and the second coordinate, N≥2;

And drawing a line image between the first coordinate, the coordinates of the N-1 intermediate points, and two adjacent coordinate points of each of the coordinate points corresponding to the second coordinates.
The electronic device according to claim 9, wherein each of the first N-1 sets of pressure data includes a maximum of two pressure values collected by the at least three pressure sensors and Describe the respective directions of the two pressure values;

The processor is specifically configured to: when calculating coordinates of the N-1 intermediate points that the pen tip passes between the first coordinate and the second coordinate;

Calculating a linear distance L between the first coordinate and the second coordinate and a connection direction a from the first coordinate to the second coordinate;

Calculating the ith group pressure according to the two pressure values included in the i-th group pressure data of the pre-N-1 group pressure data and the respective pressure values of the two pressure values included in the ith group pressure data Data, the direction of movement of the pen head b;

Calculating an angle γ between the connecting direction a and the moving direction b;

Calculating, according to the linear distance L and the angle γ, a distance L i , L i = L* cos γ / N of the movement of the tip between collecting the i-th group pressure data to collecting the (i+1)-th pressure data;

Calculating coordinates of the i-th intermediate point according to coordinates of the i-1th intermediate point, the moving direction b of the writing head, and the distance L i of the moving of the writing head;

Wherein, 1≤i≤N-1; when i=1, the coordinates of the i-1th intermediate point are the first coordinates.
The electronic device according to claim 10, characterized in that

The processor is further configured to calculate, according to the two pressure values included in the i-th group pressure data, a drawing strength of the drawing pen when collecting the i-th group pressure data;

The processor is further configured to separately set two adjacent coordinate points of each group according to respective drawing strengths when the drawing pen collects each group of pressure data in the first N-1 group pressure data An image attribute of the connected image, the image attribute including at least one of a connection color and a connection thickness.
The electronic device according to claim 8, wherein the drawing data is coordinates of N-1 intermediate points between the first coordinate and the second coordinate; the first coordinate and the second coordinate are a coordinate of two points that the pen tip passes in the drawing area of the electronic device;

The processor is configured to draw an image according to the drawing data by:

The processor draws a line image between the first coordinate, the coordinates of the N-1 intermediate points, and the adjacent two coordinate points of each of the coordinate points corresponding to the second coordinate.
The electronic device according to claim 12, wherein

The processor is further configured to control, by the transceiver, a drawing strength corresponding to each group of pressure data sent by the drawing pen when collecting the pressure data of the first N-1 group of pressure data;

The processor is further configured to separately set two adjacent coordinate points of each group according to respective drawing strengths when the drawing pen collects each group of pressure data in the first N-1 group pressure data An image attribute of the connected image, the image attribute including at least one of a connection color and a connection thickness.
A drawing method, which is used in a drawing pen, the method comprising:

Obtaining pressure data collected by at least three pressure sensors in the drawing pen according to a preset sampling frequency;

And controlling, according to the acquired pressure data, the transceiver in the drawing pen to send drawing data to the electronic device, so that the electronic device draws an image according to the drawing data.
The method of claim 14 wherein said mapping data is said pressure data.
The method according to claim 14, wherein the drawing data is a coordinate of N-1 intermediate points, N≥2; and the transmitting and receiving in the drawing pen is controlled according to the acquired pressure data. The device sends the drawing data to the electronic device, including:

Controlling, by the transceiver, a first coordinate and a second coordinate that are acquired and sent by the electronic device in real time, where the first coordinate and the second coordinate are successively passed by the pen tip in a drawing area of the electronic device The coordinates of two points;

Calculating based on the first coordinate, the second coordinate, and the first N-1 group pressure data in the N sets of pressure data sequentially acquired within a time period in which the first coordinate and the second coordinate are received a coordinate of the N-1 intermediate points sequentially passed between the first coordinate and the second coordinate;

Controlling the transceiver to transmit coordinates of the N-1 intermediate points to the electronic device.
The method according to claim 16, wherein each of said first N-1 sets of pressure data includes a maximum of two pressure values collected by said at least three pressure sensors and said The respective directions of the two pressure values; the calculating the coordinates of the N-1 intermediate points that the pen head sequentially passes between the first coordinate and the second coordinate, specifically including:

Calculating a linear distance L between the first coordinate and the second coordinate and a connection direction a from the first coordinate to the second coordinate;

Calculating the ith group pressure according to the two pressure values included in the i-th group pressure data of the pre-N-1 group pressure data and the respective pressure values of the two pressure values included in the ith group pressure data Data, the direction of movement of the pen head b;

Calculating an angle γ between the connecting direction a and the moving direction b;

Calculating, according to the linear distance L and the angle γ, a distance L i , L i = L* cos γ / N of the movement of the tip between collecting the i-th group pressure data to collecting the (i+1)-th pressure data;

Calculating coordinates of the i-th intermediate point according to coordinates of the i-1th intermediate point, the moving direction b of the writing head, and the distance L i of the moving of the writing head;

Wherein, 1≤i≤N-1; when i=1, the coordinates of the i-1th intermediate point are the first coordinates.
The method of claim 17, wherein the method further comprises:

Calculating a drawing strength when collecting the i-th group pressure data according to the two pressure values included in the i-th group pressure data;

And controlling, by the transceiver, the drawing strength corresponding to each group of pressure data in the first N-1 group pressure data to be sent to the electronic device.
A drawing method, characterized in that, in an electronic device, the method comprises:

Receiving drawing data sent by the drawing pen;

An image is drawn based on the drawing data.
The method according to claim 19, wherein said drawing data is pressure data collected by at least three pressure sensors in said drawing pen;

The drawing an image according to the drawing data specifically includes:

Obtaining a first coordinate and a second coordinate, where the first coordinate and the second coordinate are coordinates of two points that the pen tip of the drawing pen passes successively in the drawing area of the electronic device;

Determining the first N- of the N sets of pressure data sequentially acquired by the drawing pen according to the first coordinate, the second coordinate, and the time period during which the first coordinate and the second coordinate are acquired a set of pressure data, calculating the coordinates of the N-1 intermediate points that the pen tip passes between the first coordinate and the second coordinate, N≥2;

And drawing a line image of the first coordinate, the coordinates of the N-1 intermediate points, and the coordinate points corresponding to the second coordinates, and the adjacent two coordinate points of each group.
The method according to claim 20, wherein each of said first N-1 sets of pressure data includes a maximum of two pressure values collected by said at least three pressure sensors and said The respective directions of the two pressure values; the calculating the coordinates of the N-1 intermediate points that the pen tip passes in sequence between the first coordinate and the second coordinate, specifically including:

Calculating a linear distance L between the first coordinate and the second coordinate and a connection direction a from the first coordinate to the second coordinate;

Calculating the ith group pressure according to the two pressure values included in the i-th group pressure data of the pre-N-1 group pressure data and the respective pressure values of the two pressure values included in the ith group pressure data Data, the direction of movement of the pen head b;

Calculating an angle γ between the connecting direction a and the moving direction b;

Calculating, according to the linear distance L and the angle γ, a distance L i , L i = L* cos γ / N of the movement of the tip between collecting the i-th group pressure data to collecting the (i+1)-th pressure data;

Calculating coordinates of the i-th intermediate point according to coordinates of the i-1th intermediate point, the moving direction b of the writing head, and the distance L i of the moving of the writing head;

Wherein, 1≤i≤N-1; when i=1, the coordinates of the i-1th intermediate point are the first coordinates.
The method of claim 21, wherein the method further comprises:

Calculating a drawing strength of the drawing pen when collecting the i-th group pressure data according to two pressure values included in the i-th group pressure data;

And respectively setting an image of the connection image between the two adjacent coordinate points of each group according to the drawing strength corresponding to each group of pressure data in the first N-1 group pressure data of the drawing pen An attribute, the image attribute including at least one of a connection color and a connection thickness.
The method according to claim 19, wherein said drawing data is coordinates of N-1 intermediate points between the first coordinate and the second coordinate; said first coordinate and said second coordinate being Describe the coordinates of two points that the pen head passes in the drawing area of the electronic device;

The drawing an image according to the drawing data comprises:

And drawing a line image of the first coordinate, the coordinates of the N-1 intermediate points, and the coordinate points corresponding to the second coordinates, and the adjacent two coordinate points of each group.
The method of claim 23, wherein the method further comprises:

Receiving, by the drawing pen, the drawing strength corresponding to each group of pressure data in the first N-1 group pressure data sent by the drawing pen;

And respectively setting an image of the connection image between the two adjacent coordinate points of each group according to the drawing strength corresponding to each group of pressure data in the first N-1 group pressure data of the drawing pen An attribute, the image attribute including at least one of a connection color and a connection thickness.