CN112860109A - Touch input device and method, electronic equipment and readable storage medium - Google Patents
Touch input device and method, electronic equipment and readable storage medium Download PDFInfo
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03547—Touch pads, in which fingers can move on a surface
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0484—Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range
- G06F3/04847—Interaction techniques to control parameter settings, e.g. interaction with sliders or dials
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
- G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
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Abstract
The invention discloses a touch input device, a touch input method, electronic equipment and a readable storage medium. Wherein, the device includes: a touch panel; the input part is arranged on the touch panel and used for providing an effective input area and a peripheral input area; the detection part is arranged on the touch panel and is used for detecting an input track signal of the input part; and the control part is used for acquiring a coordinate position corresponding to the last input track signal as a current coordinate position according to the input track signal detected by the detection part, acquiring a previous coordinate position adjacent to the current coordinate position when the current coordinate position is positioned in the peripheral input area, and determining a compensation input track according to the current coordinate position and the previous coordinate position. By implementing the method and the device, the problem that the handwriting is lost at the edge of the touch panel is solved, the difference between the handwriting presented by the display screen and the actual handwriting is further reduced, the effect of restoring the actual handwriting is achieved, and the accuracy of the displayed handwriting is also ensured.
Description
Technical Field
The invention relates to the technical field of intelligent handwriting input, in particular to a touch input device, a touch input method, electronic equipment and a readable storage medium.
Background
With the rapid development of electronic touch technology, most electronic products in the market include electronic touch screens to ensure the beauty and lightness of the electronic products, and individual electronic products can also use the electronic touch screens as protection screens. The user can input request information to the electronic product through the electronic touch screen and complete display on a self-set display screen or an external display screen.
However, the surface of the electronic product, such as a tablet computer, a label screen, a drawing screen, or the like, is a whole touch panel, and when the touch pen writes on the touch panel, the pen tip easily gets out of the effective area of the touch panel. Especially, when the writing speed of the stylus is high, the last detection point of the writing handwriting is likely to be out of the boundary of the effective area and cannot be detected; or the writing signal of the stylus pen is detected at the boundary critical point of the effective area, but the coordinate data of the writing handwriting is judged to be invalid due to data abnormity caused by the writing speed of the stylus pen, the boundary energy distribution of the effective area and the like. Therefore, when the existing touch pen quickly writes to the edge or the outer part of the edge of the touch panel, the writing displayed on the display screen can be finished at a certain distance from the edge of the display screen, so that the writing displayed on the display screen is lost, and the writing displayed on the display screen is different from the actual writing.
Disclosure of Invention
Embodiments of the present invention provide a touch input device, a touch input method, an electronic device, and a readable storage medium to solve the problem of missing input tracks at the edge of the touch input device during writing.
According to a first aspect, an embodiment of the present invention provides a touch input device, including: a touch panel; an input section provided at the touch panel for providing an effective input area and a peripheral input area; the detection part is arranged on the touch panel and is used for detecting an input track signal of the input part; and the control part is used for acquiring a coordinate position corresponding to the last input track signal as a current coordinate position according to the input track signal detected by the detection part, acquiring a previous coordinate position adjacent to the current coordinate position when the current coordinate position is positioned in the peripheral input area, and determining a compensation input track according to the current coordinate position and the previous coordinate position.
The touch input device provided by the embodiment of the invention comprises: the touch panel comprises a touch panel, an input part, a detection part and a control part, wherein the input part is arranged on the touch panel to provide an effective input area and a peripheral input area, the detection part is arranged on the touch panel to detect a track signal input by the input part, the control part can detect the input track signal according to the detection part to obtain a coordinate position corresponding to the last input track signal as a current coordinate position, and when the current coordinate position is positioned in the peripheral input area, the control part can obtain a former coordinate position adjacent to the current coordinate position, and determine a compensation input track according to the current coordinate position and the former coordinate position. The writing handwriting corresponding to the track signal input by the input part can reach the edge of the touch panel through the compensation handwriting, so that the problem that the writing handwriting is lost at the edge of the touch panel is solved, the difference between the writing handwriting presented by the display screen and the actual handwriting is further reduced, and the effect of restoring the actual handwriting is achieved, and the accuracy of the displayed writing handwriting is also guaranteed.
With reference to the first implementation manner of the first aspect, in a second implementation manner of the first aspect, the determining a compensated coordinate position according to the current coordinate position and the previous coordinate position includes: predicting a next coordinate position adjacent to the current coordinate position based on the current coordinate position and the previous coordinate position; judging whether the next coordinate position exceeds the boundary of the peripheral input area of the input part; determining the compensated coordinate position based on the current coordinate position and the next coordinate position or based on the current coordinate position and the previous coordinate position when the next coordinate position exceeds a boundary of a peripheral input area of the input part, the compensated coordinate position being on the boundary of the peripheral input area.
The touch input device provided by the embodiment of the invention predicts the next coordinate position adjacent to the current coordinate position based on the current coordinate position and the previous coordinate position, judges whether the next coordinate position exceeds the boundary of the peripheral input area, and determines the compensation coordinate position based on the current coordinate position and the next coordinate position or based on the current position coordinate and the previous coordinate position when the next coordinate position exceeds the boundary of the peripheral input area, wherein the compensation coordinate position is positioned on the boundary of the peripheral input area. The device solves the problem that the handwriting is lost at the edge of the touch panel by determining the compensation coordinate position at the edge of the touch panel, realizes that the handwriting can be completely displayed at the edge of the touch panel, and ensures the maximum similarity between the handwriting and the actual handwriting.
With reference to the second implementation manner of the first aspect, in a third implementation manner of the first aspect, the determining the compensated coordinate position includes: determining an intersection point of the connecting line and the boundary of the peripheral input area by using the connecting line of the current coordinate position and the next coordinate position, and taking the intersection point as the compensation coordinate position; or, based on the current coordinate position and the previous coordinate position, determining a vertical coordinate or a horizontal coordinate of the boundary of the peripheral input area as a vertical coordinate or a horizontal coordinate of the compensated coordinate position; and determining the abscissa or ordinate corresponding to the compensation coordinate position by using the current coordinate position and the previous coordinate position.
According to the touch input device provided by the embodiment of the invention, the intersection point of the connecting line and the boundary of the peripheral input area is determined by utilizing the connecting line of the current coordinate position and the next coordinate position, and the determined intersection point is used as the compensation coordinate position, so that the running directions of the compensation handwriting coordinate point and the last handwriting coordinate point are consistent, and the accuracy of the determined compensation coordinate point is ensured. The vertical coordinate or the horizontal coordinate of the compensation coordinate position is determined by utilizing a coordinate system corresponding to the display screen of the electronic equipment, the horizontal coordinate or the vertical coordinate of the compensation coordinate position is determined by utilizing the current coordinate position and the previous coordinate position, and the compensation coordinate position is further determined. Therefore, the compensation coordinate position is quickly determined, the compensation handwriting can be quickly generated, the display handwriting can be synchronously displayed on the display screen when the handwriting is finished, and the use experience of a user is improved.
With reference to the second implementation manner of the first aspect, in a fourth implementation manner of the first aspect, the determining a compensated coordinate position according to the current coordinate position and the previous coordinate position further includes: determining the next coordinate position as the compensated coordinate position when the next coordinate position does not exceed a boundary of a peripheral input area of the input part.
According to the touch input device provided by the embodiment of the invention, when the next coordinate position does not exceed the boundary of the peripheral input area, the next coordinate position is determined as the compensation coordinate position, so that the consistency of the displayed handwriting and the actual handwriting is ensured.
With reference to any one of the first to fourth embodiments of the first aspect, in a fifth embodiment of the first aspect, the determining the compensated input trajectory based on the compensated coordinate position and the current coordinate position includes: and connecting the compensation coordinate position with the current coordinate position to generate the compensation input track.
According to the touch input device provided by the embodiment of the invention, the compensation handwriting is generated by connecting the compensation coordinate position with the current coordinate position. When the compensation coordinate position is located in the peripheral input area, the compensation coordinate position is connected with the current coordinate position to enable the display handwriting to reach the edge of the display screen, so that the problem that the display handwriting cannot reach the edge of the display screen to cause large difference between the display handwriting and the actual handwriting is solved, and the accuracy of the display handwriting is ensured; when the compensation coordinate position does not exceed the boundary of the peripheral input area, the current coordinate position is connected with the compensation coordinate position, so that the consistency of the displayed handwriting and the actual handwriting is ensured, the problem that the displayed handwriting is inconsistent with the actual handwriting is avoided, and the accuracy of the displayed handwriting is ensured.
With reference to the fifth implementation manner of the first aspect, in a sixth implementation manner of the first aspect, the predicting a next coordinate position adjacent to the current coordinate position based on the current coordinate position and the previous coordinate position includes: acquiring a sampling time interval of an input track signal of the input part; predicting the next coordinate position based on the current coordinate position, the previous coordinate position, and the sampling time interval.
According to the touch input device provided by the embodiment of the invention, the handwriting coordinate position is obtained by adopting the time interval, and the next coordinate position is predicted based on the time interval, the current coordinate position and the previous coordinate position, so that the prediction accuracy of the next coordinate position is ensured.
With reference to the sixth implementation manner of the first aspect, in the seventh implementation manner of the first aspect, the predicting the next coordinate position based on the last coordinate position, the previous coordinate position and the sampling time interval includes: determining the writing speed of the input track by using the current coordinate position, the previous coordinate position and the sampling time interval; predicting the next coordinate position using the writing speed, the current coordinate position, and the sampling time interval.
According to the touch input device provided by the embodiment of the invention, the handwriting coordinate position is obtained by adopting the time interval, the writing speed is determined based on the time interval, the current coordinate position and the previous coordinate position, and the next coordinate position is predicted by utilizing the writing speed, the current coordinate position and the time interval, so that the prediction accuracy of the next coordinate position is ensured.
According to a second aspect, an embodiment of the present invention provides a touch input method, which is applied to the touch input device according to the first aspect or any implementation manner of the first aspect, and includes the following steps: acquiring the last coordinate position corresponding to the input track signal; taking the last coordinate position as a current coordinate position; judging whether the current coordinate position is located in a peripheral input area of the touch input device; and when the current coordinate position is located in the peripheral input area, determining a compensation input track according to the current coordinate position and the previous coordinate position adjacent to the current coordinate position.
According to the touch input method provided by the embodiment of the invention, the coordinate position corresponding to the last input track signal is obtained as the current coordinate position by obtaining the input track signal, the previous coordinate position adjacent to the current coordinate position is obtained when the current coordinate position is located in the peripheral input area, and the compensation input track is determined according to the current coordinate position and the previous coordinate position. The display handwriting corresponding to the track signal input by the input part can reach the edge of the display screen of the electronic equipment by the compensation handwriting, so that the problem that the difference between the display handwriting and the actual handwriting is large due to the fact that the display handwriting cannot reach the edge of the display screen of the electronic equipment is solved, the difference between the display handwriting of the display screen and the actual handwriting is further reduced, and the accuracy of the display handwriting is guaranteed.
According to a third aspect, an embodiment of the present invention provides an electronic device, including: the touch input device of the first aspect or any embodiment of the first aspect; and the display screen is used for displaying the input track detected by the touch input device.
According to a fourth aspect, the present invention provides a computer-readable storage medium, which stores computer instructions for causing a computer to execute the touch input method according to the second aspect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a functional block diagram of a touch input device according to an embodiment of the present invention;
fig. 2 is a flowchart of a touch input method performed by the control section according to an embodiment of the present invention;
fig. 3 is another flowchart of a touch input method performed by the control portion according to an embodiment of the invention;
FIG. 4 is a schematic diagram of compensating input handwriting according to an embodiment of the invention;
FIG. 5 is another schematic diagram of compensating input handwriting according to an embodiment of the invention;
fig. 6 is a flowchart of a touch input method according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
When a user writes on the touch input device through a touch pen, if the writing speed of the touch pen is high, the last coordinate position in the actual input track is likely to be beyond the edge of the touch panel of the touch input device and cannot be detected; or the input track signal of the touch pen is detected at the marginal position of the edge of the touch panel, but the coordinate data of the input track is judged to be invalid due to data abnormity caused by the movement speed of the touch pen, the energy distribution of the edge of the touch panel and the like. Therefore, in the existing touch input device, when the stylus quickly writes to the edge or the outer part of the edge of the touch panel, the input track ends at a certain distance from the edge of the touch panel, that is, the input track at the edge of the touch panel is lost during display, so that the display handwriting presented by the display screen is different from the actual input track.
Based on the technical scheme, the missing display handwriting on the display screen is generated by determining the coordinate position of the missing input track, namely the compensation coordinate position, at the boundary of the touch panel and connecting the last coordinate position of the input handwriting with the compensation coordinate position, namely the compensation handwriting is generated, so that the input handwriting at the edge of the touch panel can be completely displayed, the problem that the display handwriting is missing at the edge of the display screen is solved, the actual input track is restored to the maximum extent, and the difference between the display handwriting and the actual input track is reduced.
According to an embodiment of the present invention, an embodiment of a touch input device is provided, as shown in fig. 1, the touch input device includes: a touch panel 11, an input unit 12, a detection unit 13, and a control unit 14. The input unit 12 is disposed on the touch panel 11, and the input unit 12 is mainly used for providing an effective input area and a peripheral input area for a user; the detection part 13 is arranged on the touch panel 11 and is used for detecting an input track signal of the input part; the control unit 14 can determine whether the compensation input trajectory needs to be generated according to the input trajectory signal detected by the detection unit 13.
Specifically, the peripheral input region of the input part 12 is a boundary region of the input part, for example, the boundary region of the input part 12 has a width of 5-15mm, i.e., the outer side of the boundary region (i.e., the boundary of the peripheral input region) is 5-10mm, or 10-15mm, or 5-15mm away from the inner side (i.e., the boundary of the effective input region), which is not particularly limited herein. Wherein the effective input area is a writing area of the input section 12 excluding the border area. When the stylus pen writes in the effective input area of the input part 12, the problem that the actual writing handwriting of the stylus pen cannot be completely displayed does not occur, and the touch input device can normally record writing data; however, when the stylus pen writes in the peripheral input area of the input portion 12, the actual writing trace may not be displayed, so that the input trace signal of the input portion 12 needs to be detected by the detection portion 13 to determine whether the input trace (actual writing trace) exceeds the effective input area, and when the input trace is detected to exceed the effective input area, the control portion 14 may perform the steps shown in fig. 2:
and S11, acquiring the coordinate position corresponding to the last input track signal as the current coordinate position.
With the input unit 12 as a two-dimensional coordinate system, the detection unit 13 collects the coordinate position of the input trace of the primary stylus on the input unit 12 at each sampling time interval (the sampling time interval is the time interval between the detection of two adjacent input trace signals by the detection unit, which will be described in detail later). The coordinate position corresponding to the last input track signal is the last coordinate position that can be displayed on the display screen in the input track collected by the detection unit 13. The input portion 12 may be rectangular, circular, or other shapes, and is not limited in particular. In one embodiment, taking the rectangular input unit 12 shown in fig. 4 as an example, the lower left corner of the input unit 12 is taken as the origin (0, 0) of the two-dimensional coordinate system, and if the sampling time interval is t, the coordinate position corresponding to the input track of the stylus pen on the input unit 12 is collected once every time interval t, for example, (x0, y0), (x1, y1), (x2, y2) … … (xn, yn), and (xn, yn) is the coordinate position corresponding to the last input track signal on the input unit 12, that is, the current coordinate position.
And S12, acquiring the previous coordinate position adjacent to the current coordinate position, and determining the compensation input track according to the current coordinate position and the compensation coordinate position.
The control unit 14 calculates a compensation coordinate position according to the current coordinate position of the input trajectory signal detected by the detection unit 13 and the previous coordinate position adjacent to the current coordinate position, and connects the compensation coordinate position calculated by the calculation with the current coordinate position to obtain a connection line, which is the compensation input trajectory.
With continued reference to fig. 1, the touch input device provided in the embodiment of the present invention includes: the touch panel 11, the input unit 12, the detection unit 13, and the control unit 14, wherein the input unit 12 is disposed on the touch panel 11 to provide an effective input area and a peripheral input area, the detection unit 13 is disposed on the touch panel 11 to detect a track signal input by the input unit 12, and the control unit 14 can obtain a coordinate position corresponding to a last input track signal as a current coordinate position according to the input track signal detected by the detection unit 13, obtain a previous coordinate position adjacent to the current coordinate position when the current coordinate position is in the peripheral input area, and determine a compensation input track according to the current coordinate position and the previous coordinate position. The compensation input track is a missing part when the handwriting is displayed on the edge of the display screen, and the compensation input track corresponds to the missing handwriting in the display handwriting of the display screen. That is, the display handwriting corresponding to the track signal input by the input part 12 can be completely displayed at the edge of the display screen by the compensation handwriting, so that the problem that the display handwriting is different from the actual writing handwriting due to the deletion of the display handwriting at the edge of the display screen is solved, the difference between the display handwriting and the actual writing handwriting is reduced, the actual writing handwriting is restored, and the accuracy of the display handwriting is ensured.
As an alternative embodiment, as shown in fig. 3, the step S12 executed by the control part 14 may include the following steps:
and S121, determining a compensation coordinate position according to the current coordinate position and the previous coordinate position.
If the current coordinate position falls within the coordinate range of the peripheral input area, the input trace (i.e., the actual writing trace) representing the stylus may cross the writing boundary of the input portion, i.e., the input trace of the stylus may cross the peripheral input area. At this time, in order to ensure that the input trace of the stylus pen can be completely displayed on the display screen even at the boundary of the peripheral input area when the input trace of the stylus pen crosses the peripheral input area, the compensation coordinate position needs to be calculated to generate the compensation input handwriting, that is, the missing coordinate position needs to be calculated and predicted to generate the missing display handwriting on the display screen. Specifically, in one embodiment, when it is determined that the current coordinate position falls within the coordinate range of the peripheral input area and the sampling time interval is small, it may be considered that a straight line is between two adjacent handwriting coordinate positions, a straight line may be determined according to the current coordinate position and a previous coordinate position corresponding to the current coordinate position, and then an intersection point of the straight line and the boundary of the peripheral input area may be determined, where the intersection point is the compensation coordinate position. Of course, other methods may be used to determine the compensated coordinate position, as long as it is ensured that the compensated coordinate position is determined according to the current coordinate position and the previous coordinate position corresponding to the current coordinate position.
And S122, determining a compensation input track based on the compensation coordinate position and the current coordinate position.
After the compensation coordinate position is determined, the compensation coordinate position is connected with the current coordinate position, so that a connection line between the compensation coordinate position and the current coordinate position can be obtained, and the connection line is used as the compensation input handwriting.
As an alternative embodiment, step S121 executed by the control unit 14 may include the steps of:
(1) based on the current coordinate position and the previous coordinate position, a next coordinate position adjacent to the current coordinate position is predicted.
A distance between the current coordinate position and the previous coordinate position may be determined based on the current coordinate position and the previous coordinate position. Since the sampling time intervals are consistent and the sampling time intervals are short, the movement speed and the movement direction of the stylus pen can be considered to be unchanged in one sampling time interval, that is, the input speed and the input direction of the input track are unchanged in one sampling time interval, the distance between the next coordinate position and the current coordinate position can be determined by the distance between the current coordinate position and the previous coordinate position, the sampling time interval and the movement speed, and the distance between the next coordinate position and the current coordinate position and the distance between the current coordinate position and the previous coordinate position can be known to be equal. And based on the characteristics of equal movement distance and same movement direction, the next coordinate position corresponding to the current coordinate position can be predicted.
(2) It is determined whether the next coordinate position is beyond the boundary of the peripheral input area of the input section.
Comparing the obtained next coordinate position with the coordinate data corresponding to the boundary of the peripheral input area of the input unit 12, judging whether the next coordinate position is located outside the boundary of the peripheral input area, if so, executing the step (3), otherwise, executing the step (4).
(3) Determining a compensated coordinate position based on the current coordinate position and a next coordinate position or based on the current coordinate position and a previous coordinate position, the compensated coordinate position being on a boundary of the peripheral input area.
When the next coordinate position is located outside the boundary of the peripheral input area, it can be determined that the input trajectory of the stylus has crossed the boundary of the peripheral input area, and at this time, a compensated coordinate position is determined on the boundary of the peripheral input area to ensure that the input trajectory of the stylus can be completely displayed on the edge of the display screen.
Specifically, the step (3) may include the steps of:
(31) and determining an intersection point of the connecting line and the boundary of the peripheral input area by using the connecting line of the current coordinate position and the next coordinate position, and taking the intersection point as a compensation coordinate position.
A straight line y ═ f (x) can be determined from the current coordinate position and the predicted next coordinate position, and there is an intersection between the straight line and the boundary of the peripheral input area because the next coordinate position has exceeded the boundary of the peripheral input area. The intersection of the straight line and the boundary of the peripheral input region may be determined from the functional expression of the straight line and the boundary of the peripheral input region. As shown in FIG. 4, if the current coordinate position is (x)n，yn) The next coordinate position is (x)n+1，yn+1) Is determined by the two-dimensional coordinate system of (a). The current coordinate position (x)n，yn) With the next coordinate position (x)n+1，yn+1) The connection may result in a straight line Y ═ f (X), and the functional expression of the boundary of the peripheral input region is X ═ Xm, Y ═ 0, where Xm ∈ R. The coordinates of the intersection a can be determined from the functional expression of the straight line y ═ f (x) and the boundary of the peripheral input area. Of course, in the peripheral input region having another shape, the intersection of the straight line y ═ f (x) and the peripheral input region may be determined in accordance with the functional expression of the boundary between the peripheral input regions.
(32) And determining the intersection point as a compensation coordinate position. And taking the intersection point of the connecting line of the current coordinate position and the next coordinate position and the boundary of the peripheral input area as a compensation coordinate position. For example, point a shown in fig. 4 is the compensated coordinate position.
Optionally, the step (3) may include the steps of:
(31) based on the current coordinate position and the previous coordinate position, determining the ordinate or abscissa of the boundary of the peripheral input area as the ordinate or abscissa of the compensated coordinate position.
The input unit is a two-dimensional coordinate system, and the ordinate or abscissa corresponding to the compensated coordinate position can be specified based on the compensated coordinate position being located on the boundary of the peripheral input region. Taking the rectangular input section shown in fig. 4 as an example, if the stylus pen moves out from below or above the boundary of the peripheral input region, the ordinate of the compensated coordinate position can be determined to be 0 or a constant C1(C1 > 0); if the stylus is moved out from the left or right of the boundary of the peripheral input region, it may be determined that the abscissa of the compensated coordinate position is 0 or a constant C2(C2 > 0).
For example, when the stylus is moving beyond the boundary of the peripheral input area, the intersection D of the compensated writing with the boundary of the peripheral input area may be determined as a compensated coordinate location, where the ordinate of the compensated coordinate location D is C1. When the stylus pen is beyond the left side of the boundary of the peripheral input area, the intersection point E of the compensation handwriting and the boundary of the peripheral input area can be determined as a compensation coordinate position, wherein the abscissa of the compensation coordinate position E is 0.
(32) And determining the abscissa or ordinate corresponding to the compensation coordinate position by using the current coordinate position and the previous coordinate position.
If the current coordinate position is (x'n，y’n) The former coordinate position is (x'n-1，y’n-1) And the compensation coordinate position is (x ", C1), a relational expression among the current coordinate position, the previous coordinate position and the compensation coordinate position can be obtained:
when the ordinate of the compensated coordinate position is determined to be C1, the abscissa x ″ of the compensated coordinate position can be obtained according to the above expression, and further the compensated coordinate position (x ″, C1) can be obtained, and it is known that C1 is Ym.
If the current coordinate position is (x) "n，y”n) The former coordinate position is (x) "n-1，y”n-1) And the compensation coordinate position is (0, y), a relational expression among the current coordinate position, the previous coordinate position and the compensation coordinate position can be obtained:
when the abscissa of the compensated coordinate position is determined to be 0, the ordinate y ″ of the compensated coordinate position can be obtained according to the above expression, and thus the compensated coordinate position (0, y') can be obtained.
(4) When the next coordinate position does not exceed the boundary of the peripheral input area of the input portion, the next coordinate position is determined as the compensated coordinate position.
And when the next coordinate position does not exceed the boundary of the peripheral input area, connecting the current coordinate position and the next coordinate position to generate the compensation handwriting by taking the predicted next coordinate position as the compensation coordinate position so as to enable the displayed handwriting to be consistent with the actual handwriting. For example, taking the rectangular input unit shown in FIG. 5 as an example, the next coordinate position (x'n+1，y’n+1) When the boundary of the peripheral input area is not exceeded, the current coordinate position is set to be (x)n，yn) And the next coordinate position (x'n+1，y’n+1) And connecting to generate the compensated handwriting L.
As an optional implementation manner, the determining the compensated coordinate position based on the current coordinate position and the previous coordinate position in step (3) above may further include: and determining the intersection point of the extension line of the connection line and the boundary of the peripheral input area by using the extension line of the connection line of the current coordinate position and the previous coordinate position, and taking the intersection point as a compensation coordinate position.
According to the touch input device provided by the embodiment, when the next coordinate position exceeds the boundary of the peripheral input area, the compensation coordinate position located at the edge of the touch panel is determined, so that the problem that writing handwriting is lost at the edge of the touch panel is solved, namely the problem that display handwriting (handwriting corresponding to writing on a display screen) cannot be completely displayed at the edge of the display screen is solved, the display handwriting can be completely displayed at the edge of the display screen, and the maximum similarity between the display handwriting and actual writing handwriting is ensured; and when the next coordinate position does not exceed the boundary of the peripheral input area, determining the next coordinate position as a compensation coordinate position, thereby ensuring the consistency of the displayed handwriting and the actual written handwriting.
By using the connecting line of the current coordinate position and the next coordinate position, the intersection point of the connecting line and the boundary of the peripheral input area is determined, and the determined intersection point is used as the compensation coordinate position, so that the running direction of the coordinate position corresponding to the compensation handwriting is consistent with the running direction of the current coordinate position (the last handwriting coordinate point) and the accuracy of the determined compensation coordinate position is ensured. The method comprises the steps of determining the ordinate or abscissa of a compensation coordinate position by using a coordinate system corresponding to an input part of the touch input device, determining the abscissa or ordinate of the compensation coordinate position by using a current coordinate position and a previous coordinate position, and further determining the compensation coordinate position, or determining the intersection point of the extension line of a connecting line of the current coordinate position and the previous coordinate position and the boundary of a peripheral input area by using the extension line of the connecting line, wherein the determined intersection point is used as the compensation coordinate position, and the accuracy of the determined compensation coordinate position is also ensured. Therefore, the compensation coordinate position is determined quickly, the compensation handwriting can be generated quickly, the compensation handwriting can be displayed on the display screen synchronously when actual writing is finished (namely the actual writing handwriting is finished), and the use experience of a user is improved.
As an optional implementation manner, the step (1) of predicting a next coordinate position adjacent to the current coordinate position based on the current coordinate position and a previous coordinate position may include the following steps:
(11) a sampling time interval of an input trace signal of an input unit is acquired.
The sampling time interval is a time interval between the detection of two adjacent input track signals by the detection section. The sampling time interval t may be 1ms, or 0.5ms, or may be other time interval values, which are not specifically limited herein and can be determined by one skilled in the art according to actual needs. The sampling time interval is usually preset, and when the detection part of the touch input device detects that the touch pen writes on the input part, the input track signal of the touch pen is sampled and detected according to the sampling time interval, and the handwriting coordinate position corresponding to each sampling time point is obtained.
(12) The next coordinate position is predicted based on the current coordinate position, the previous coordinate position, and the sampling time interval.
The distance between the two coordinate positions can be determined according to the current coordinate position and the previous coordinate position, the change of the movement speed of the touch pen can be ignored based on the consistent sampling time interval and the short sampling time interval, and then the next coordinate position can be predicted based on the current coordinate position, the previous coordinate position and the handwriting sampling time interval.
Specifically, the step (12) may include the steps of:
(121) and determining the writing speed of the input track by using the current coordinate position, the previous coordinate position and the sampling time interval.
The writing speed is the movement speed of the stylus. The distance D1 between the two coordinate locations may be determined based on the current coordinate location (i.e., the last written coordinate point) and the previous coordinate location (i.e., the previous written coordinate point adjacent to the last written coordinate point). According to the sampling time interval t between the current coordinate position and the previous coordinate position, the movement speed v of the stylus is D1/t, that is, the writing speed v is D1/t, which is obtained by combining the distance D1.
(122) The next coordinate position is predicted using the writing speed, the current coordinate position, and the sampling time interval.
The distance D2 of the movement of the stylus in the next sampling time interval, i.e. the distance between the current coordinate position and the next coordinate position, can be determined according to the writing speed and the sampling time interval, i.e. D2. Because the handwriting sampling time interval is short, the movement direction of the stylus is considered to be unchanged, the movement direction is the direction from the previous coordinate position to the current coordinate position, and then on the basis of the current coordinate position, the movement distance D2 is added along the movement direction, and the next coordinate position can be determined.
Of course, since the sampling time interval is fixed, it can be considered that the moving speed of the stylus between the current coordinate position and the predicted next coordinate position is the same as the moving speed from the previous coordinate position to the current coordinate position, and thus the distance between the current coordinate position and the previous coordinate position is equal to the distance between the current coordinate position and the next coordinate position. Thus, in one embodiment, to quickly determine the next coordinate position, only the distance D1 between the current coordinate position and the previous coordinate position may be calculated, and the next coordinate position may be obtained by adding the distance D1 to the current coordinate along the direction of movement from the previous coordinate to the current coordinate.
According to the touch input device provided by the embodiment of the invention, the time interval is adopted to obtain the coordinate position of the handwriting, and the next coordinate position is predicted based on the time interval, the current coordinate position and the previous coordinate position, so that the prediction accuracy of the next coordinate position is ensured; the coordinate position of the handwriting is obtained by adopting the time interval, the writing speed is determined based on the time interval, the current coordinate position and the previous coordinate position, and then the next coordinate position is predicted by utilizing the writing speed, the current coordinate position and the time interval, or the next coordinate position is predicted by utilizing the distance between the current coordinate position and the previous coordinate position, so that the prediction accuracy of the next coordinate position is ensured.
There is also provided, in accordance with an embodiment of the present invention, a touch input method, it should be noted that the steps illustrated in the flowchart of the accompanying drawings may be performed in a computer system such as a set of computer-executable instructions, and that, although a logical order is illustrated in the flowchart, in some cases, the steps illustrated or described may be performed in an order different than here.
In this embodiment, a touch input method is provided, which can be used in a touch input device, such as a touch computer, a tablet computer, a drawing board, an electromagnetic screen, and the like, and fig. 6 is a flowchart of the touch input method according to the embodiment of the present invention, as shown in fig. 6, the flowchart includes the following steps:
and S21, acquiring the last coordinate position corresponding to the input track signal, and taking the last coordinate position as the current coordinate position. For a detailed description, refer to the corresponding related description of the above embodiments, which is not repeated herein.
And S22, judging whether the current coordinate position is located in the peripheral input area of the touch input device. For a detailed description, refer to the corresponding related description of the above embodiments, which is not repeated herein.
And S23, if the current coordinate position is in the peripheral input area, determining a compensation input track according to the current coordinate position and the previous coordinate position adjacent to the current coordinate position. For a detailed description, refer to the corresponding related description of the above embodiments, which is not repeated herein.
According to the touch input method provided by the embodiment of the invention, the coordinate position corresponding to the last input track signal is obtained as the current coordinate position by obtaining the input track signal, the previous coordinate position adjacent to the current coordinate position is obtained when the current coordinate position is located in the peripheral input area, and the compensation input track is determined according to the current coordinate position and the previous coordinate position. The display handwriting corresponding to the track signal input by the input part can be completely presented at the edge of the display screen by the compensation handwriting, so that the problem that the display handwriting is different from the actual writing handwriting due to the missing of the display handwriting at the edge of the display screen is solved, the difference between the display handwriting presented by the display screen and the actual handwriting is further reduced, and the accuracy of the display handwriting is ensured.
The embodiment of the invention also provides electronic equipment which is provided with the touch input device and the display screen. The display screen may be a display screen of the touch input device, for example, the touch panel 11 has a display screen function and is reused as the display screen; or may be an external display screen communicatively connected to the touch input device, such as an electronic computer (with a display screen) communicatively connected to the touch input device, etc., which are merely examples and are not intended to limit the present invention.
The embodiment of the invention also provides a non-transitory computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions can execute the processing method of the touch input method in any method embodiment. The storage medium may be a magnetic Disk, an optical Disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a Flash Memory (Flash Memory), a Hard Disk (Hard Disk Drive, abbreviated as HDD), a Solid State Drive (SSD), or the like; the storage medium may also comprise a combination of memories of the kind described above.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (11)
1. A touch input device, comprising:
a touch panel;
an input section provided at the touch panel for providing an effective input area and a peripheral input area;
the detection part is arranged on the touch panel and is used for detecting an input track signal of the input part;
and the control part is used for acquiring a coordinate position corresponding to the last input track signal as a current coordinate position according to the input track signal detected by the detection part, acquiring a previous coordinate position adjacent to the current coordinate position when the current coordinate position is positioned in the peripheral input area, and determining a compensation input track according to the current coordinate position and the previous coordinate position.
2. The touch input device of claim 1, wherein determining a compensated input trajectory from the current coordinate position and the previous coordinate position comprises:
determining a compensation coordinate position according to the current coordinate position and the previous coordinate position;
determining the compensated input trajectory based on the compensated coordinate position and the current coordinate position.
3. The touch input device of claim 2, wherein determining a compensated coordinate position from the current coordinate position and the previous coordinate position comprises:
predicting a next coordinate position adjacent to the current coordinate position based on the current coordinate position and the previous coordinate position;
judging whether the next coordinate position exceeds the boundary of the peripheral input area of the input part;
determining the compensated coordinate position based on the current coordinate position and the next coordinate position or based on the current coordinate position and the previous coordinate position when the next coordinate position exceeds a boundary of a peripheral input area of the input part, the compensated coordinate position being on the boundary of the peripheral input area.
4. The touch input device of claim 3, wherein the determining the compensated coordinate position comprises:
determining an intersection point of the connecting line and the boundary of the peripheral input area by using the connecting line of the current coordinate position and the next coordinate position, and taking the intersection point as the compensation coordinate position;
or the like, or, alternatively,
determining a vertical coordinate or a horizontal coordinate of a boundary of the peripheral input area as a vertical coordinate or a horizontal coordinate of the compensated coordinate position based on the current coordinate position and the previous coordinate position;
and determining the abscissa or ordinate corresponding to the compensation coordinate position by using the current coordinate position and the previous coordinate position.
5. The touch input device of claim 3, wherein determining a compensated coordinate position based on the current coordinate position and the previous coordinate position further comprises:
determining the next coordinate position as the compensated coordinate position when the next coordinate position does not exceed a boundary of a peripheral input area of the input part.
6. The touch input device of any one of claims 2-5, wherein determining the compensated input trajectory based on the compensated coordinate position and the current coordinate position comprises:
and connecting the compensation coordinate position with the current coordinate position to generate the compensation input track.
7. The touch input device of claim 6, wherein predicting a next coordinate position adjacent to the current coordinate position based on the current coordinate position and the previous coordinate position comprises:
acquiring a sampling time interval of an input track signal of the input part;
predicting the next coordinate position based on the current coordinate position, the previous coordinate position, and the sampling time interval.
8. The touch input device of claim 7, wherein predicting the next coordinate location based on the last coordinate location, the previous coordinate location, and the sampling time interval comprises:
determining the writing speed of the input track by using the current coordinate position, the previous coordinate position and the sampling time interval;
predicting the next coordinate position using the writing speed, the current coordinate position, and the sampling time interval.
9. A touch input method applied to the touch input device of any one of claims 1-8, comprising:
acquiring a last coordinate position corresponding to an input track signal, and taking the last coordinate position as a current coordinate position;
judging whether the current coordinate position is located in a peripheral input area of the touch input device;
and when the current coordinate position is located in the peripheral input area, determining a compensation input track according to the current coordinate position and the previous coordinate position adjacent to the current coordinate position.
10. An electronic device, comprising:
the touch input device of any one of claims 1-8;
and the display screen is used for displaying the input track detected by the touch input device.
11. A computer-readable storage medium storing computer instructions for causing a computer to execute the touch input method of claim 9.
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