CN114327099B - Operation method of touch screen sensor - Google Patents
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Abstract
The embodiment of the invention relates to an operation method of a touch screen sensor, which comprises the following steps: detecting movement of the stylus relative to the sensor surface; judging whether the touch control pen is contacted with the surface of the sensor or not; if the touch is in contact, detecting the relative position of the touch pen relative to the surface of the sensor, and determining the position coordinate value of the touch pen; extracting an indication mark in a memory, and determining whether the indication mark is a first mark; if not, extracting the initial value and the floating value of the pen pressure in the memory; detecting a pen pressure value of a current touch pen, and judging whether the pen pressure value is in a pen pressure floating range of the touch pen; if so, determining whether the indication mark is a second mark; if so, extracting a time threshold value in the memory, and judging whether the time elapsed from the initial position to the current position of the touch pen exceeds the time threshold value; if the time threshold is exceeded, setting a third flag and updating the indication flag in the memory; setting the position coordinate value as the current coordinate value of the touch control pen, and transmitting the current coordinate value.
Description
Technical Field
The invention relates to the technical field of sensor equipment, in particular to an operation method of a touch screen sensor.
Background
With the continuous development of science and technology, various touch electronic devices are increasingly applied to the work and daily life of people, and great convenience is brought to the work and daily life of people. The touch screen and the touch pen are important components of the touch electronic equipment, and the touch electronic equipment realizes touch operation and image display through the touch screen. The touch sensor is an important structure for realizing interaction between the touch screen and the touch pen, and is used for identifying the relative movement of the touch pen on the surface of the sensor and displaying through the touch display screen.
To obtain a better use effect, the writing feeling of the user on the touch screen by using the stylus is more and more similar to that of the handwriting on paper, which requires more sensitive interaction between the stylus and the touch screen. When the stylus writes on the touch screen, circuitry in the sensor surface detects the relative position of the stylus on the sensor surface at preset time intervals, and transmits the coordinate values of the position of the stylus on the sensor surface within the preset time intervals. The position coordinate values are generally transmitted to specific application software, coordinate values are analyzed through the application software, and finally the coordinate values are displayed on a touch display screen in the form of images, for example, when people input characters, corresponding handwriting is displayed on the touch display screen; when a user selects an application icon or interface and other operations on the electronic device by using the stylus, the touch sensor sends action information of the application icon or interface, and corresponding feedback actions are made through interpretation of application software.
For different application scenarios, feedback of touch screen interaction has different requirements, so that application software can be programmed and designed into different interaction modes according to different use purposes. For example, the application software may be programmed to resolve a single tap of the stylus on the touch sensor surface into a jump in object selection or cursor focus, similar to a button click on a computer mouse; when the stylus makes a double-click on the surface of the touch sensor and the touch sensor detects two-time clicking, the application software can analyze the double-click action into an action of initiating a selection object or other programming actions, and can further analyze the action of the touch sensor surface according to the subsequently detected stylus, for example, the action of dragging icons or text information formed by moving after the double-click, or the application software can analyze the double-click action into a program opening action.
However, due to limitations of science and technology, interactions between the stylus and the touch screen cannot be performed completely according to the user's will. When using a stylus to make an input with a touch screen, there is often a tendency for the tip of the stylus to inadvertently slide over the surface of the touch screen when the stylus initially touches the surface, especially when using a smooth touch screen. Furthermore, accidental sliding of the stylus is more likely to occur when the touch screen is used in unstable conditions, such as when the electronic device is held in a hand or placed on a laptop. Obviously, the feedback action caused by the accidental sliding is mostly not wanted by the user, and also brings a plurality of inconveniences to the user, such as moving the folder into another folder, deleting the icon, and the like.
Therefore, in order to solve the above problems, an operation method of the touch sensor needs to be designed to solve the problem of recognition and judgment of accidental sliding of the touch pen on the touch screen, so as to provide better use experience for users.
Disclosure of Invention
The invention aims at solving the problems in the prior art and provides an operation method of a touch screen sensor, which avoids interaction action formed by accidental sliding of a touch pen on the surface of the touch screen as far as possible and timely feeds back.
To achieve the above object, the present invention provides an operation method of a touch screen sensor, the operation method including:
detecting movement of the stylus relative to the sensor surface;
judging whether the touch pen is in contact with the sensor surface according to the activity of the touch pen relative to the sensor surface;
if the touch pen is contacted with the sensor surface, detecting the relative position of the touch pen relative to the sensor surface, and determining a position coordinate value of the touch pen according to the relative position;
extracting an indication mark in a memory, and determining whether the indication mark is a first mark;
extracting a pen pressure initial value and a pen pressure floating value in the memory if the indication mark is not the first mark;
detecting a current pen pressure value of the touch pen, and judging whether the pen pressure value is in a pen pressure floating range of the touch pen according to the pen pressure initial value and the pen pressure floating value;
if the pen pressure value is within the pen pressure floating range, determining whether the indication mark is a second mark;
if the indication mark is the second mark, extracting a preset time threshold value in the memory, and judging whether the time from the initial position to the current position of the touch pen exceeds the time threshold value or not;
if the time threshold is exceeded, setting a third flag and updating the indicator in the memory;
setting the position coordinate value as the current coordinate value of the stylus and transmitting the current coordinate value.
Preferably, after said determining whether said stylus is in contact with said sensor surface based on said activity of said stylus relative to said sensor surface, said method of operation further comprises:
if the stylus is not in contact with the sensor surface, the first flag is set and the indicator in the memory is updated.
Preferably, after the extracting the indicator in the memory and determining whether the indicator is the first indicator, the operation method further includes:
if the indication flag is the first flag, setting the second flag and updating the indication flag in the memory;
setting the position coordinate value as the current coordinate value of the stylus and transmitting the current coordinate value.
Preferably, after the determining whether the pen pressure value is within the pen pressure floating range of the stylus according to the pen pressure initial value and the pen pressure floating value, the operation method further includes:
if the pen pressure value is not in the pen pressure floating range, changing the position coordinate value;
setting the changed position coordinate value as the current coordinate value, and transmitting the current coordinate value.
Preferably, if the pen pressure value is within the pen pressure floating range, determining whether the indication mark is a second mark specifically includes:
if the pen pressure value is in the pen pressure floating range, updating the pen pressure initial value in the memory according to the pen pressure value;
determining whether the indicator is the second flag.
Preferably, after determining whether the indication flag is a second flag if the pen pressure value is within the pen pressure floating range, the operation method further includes:
if the indication mark is not the second mark, setting the position coordinate value as the current coordinate value, and transmitting the current coordinate value.
Preferably, the operation method further comprises:
receiving identification information sent by the touch pen;
extracting material properties of a pen point of the touch control pen from the identification information;
determining the friction characteristic of the touch pen according to the material property of the pen point;
setting the corresponding time threshold according to the friction characteristic and storing the time threshold in the memory.
Further preferably, the operation method further includes:
and setting the corresponding pen pressure floating value according to the friction characteristic, and storing the pen pressure floating value in the memory.
Preferably, after extracting a time threshold preset in the memory if the indication flag is the second flag, and determining whether the time elapsed from the initial position to the current position of the stylus exceeds the time threshold, the operation method further includes:
if the time threshold is not exceeded, changing the position coordinate value;
setting the changed position coordinate value as the current coordinate value, and transmitting the current coordinate value.
Preferably, before the detecting the movement of the stylus relative to the sensor surface, the operating method further comprises:
detecting the inclination angle and the initial pen pressure value of the touch pen;
determining the initial value of the pen pressure of the touch control pen according to the inclination angle and the initial pen pressure value;
and storing the initial value of the pen pressure in the memory.
According to the operation method of the touch screen sensor, provided by the embodiment of the invention, the double judgment mode of the pen pressure floating value and the time threshold is adopted, so that the interaction action formed by accidental sliding of the touch pen on the surface of the touch screen is avoided as far as possible, meanwhile, the touch sensor still detects the position of the touch pen at preset time intervals and outputs corresponding coordinate values according to specific conditions, so that the touch sensor responds to the relative action of the touch pen at any time and timely feeds back, the problem of delay period does not exist, and better use experience can be provided for a user.
Drawings
Fig. 1 is a flowchart illustrating an operation method of a touch screen sensor according to an embodiment of the present invention.
Detailed Description
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
The embodiment of the invention relates to an operation method of a touch screen sensor, which is characterized in that a pen pressure floating value and a time threshold value are selected to make double judgment on whether the action of a touch control pen is accidental sliding, so that interactive feedback of non-user willingness is reduced, detection of the touch control pen is timely performed, and the problem of delay period caused by judgment on accidental sliding is solved.
Fig. 1 is a flowchart illustrating an operation method of a touch screen sensor according to an embodiment of the present invention. The following describes an operation method of the touch screen sensor according to the embodiment of the present invention with reference to fig. 1.
Step 101, detecting the tilt angle and the initial pen pressure value of the stylus.
In one particular process, when a user uses a stylus to make an input on a touch screen of an electronic device, if the stylus is not standing on a touch sensor surface but is inclined at an angle, electrodes in the stylus may form a specific object area on the touch sensor surface, for example, the object area formed when the stylus stands on the touch sensor surface is circular, and the object area formed when the stylus is inclined at an angle to the touch sensor surface is irregularly elliptical.
Since the pen pressure formed when the user initially touches the touch screen with the stylus is not necessarily the pen pressure value at the habitual tilt angle, and the pen pressure values formed by different styluses are also different, it is also necessary to detect the initial pen pressure value of the stylus.
That is, after the stylus starts to be used, on the one hand, an initial pen pressure value needs to be detected by the stylus itself and transmitted to a controller of the touch sensor, and on the other hand, an inclination angle formed between the stylus and the touch screen surface needs to be detected by an object area formed on the touch sensor.
Step 102, determining the initial value of the pen pressure of the touch pen according to the inclination angle and the initial pen pressure value.
In a specific process, the larger the tilt angle between the stylus and the touch screen, the smaller the pen pressure value, and therefore, the initial pen pressure value of the stylus needs to be determined according to the initial pen pressure value and the tilt angle. Specifically, when the inclination angle is large, it may be necessary to reduce the initial pen pressure value, and the reduced initial pen pressure value is used as the initial pen pressure value.
That is, the magnitude of the initial pen pressure value is changed accordingly using the tilt angle measured in step 101, and the changed initial pen pressure value is taken as the initial pen pressure value.
Step 103, storing the initial value of the pen pressure in a memory.
In a specific process, the controller of the touch sensor stores the initial value of the pen pressure set in the step 102 in the memory for later accidental sliding judgment.
Because the friction characteristics of each touch pen and the wrist force of each pen used by a user are different, the initial value of the pen pressure is required to be reset according to actual conditions before each use, and the initial value of the pen pressure in the memory is required to be updated.
Step 104, detecting an activity of the stylus with respect to the sensor surface.
In a specific process, when the stylus starts to approach the touch screen and signals the touch sensor, the touch sensor needs to detect the relative movement of the stylus with respect to the sensor surface at preset time intervals, and make corresponding feedback according to the movement made by the stylus.
Step 105, determining whether the stylus is in contact with the sensor surface according to the activity of the stylus relative to the sensor surface.
In a specific process, the sensor reports the activity of the stylus to the controller of the touch sensor in real time, and the controller judges the hovering distance and the contact condition between the stylus and the touch screen. It is particularly noted that the controller will analyze the transmitted activity of the stylus in real time and determine whether the stylus is in contact with the sensor surface, so as to control the next step of sensor action according to the determined result.
If the stylus is in contact with the sensor surface, indicating that interaction between the stylus and the sensor is occurring, then step 106 is entered; if the stylus is not in contact with the sensor surface, step 115 is entered.
In step 115, the first flag is set and the indicator in the memory is updated.
In a specific process, the contact condition is divided into four different conditions of non-contact, initial contact, second contact and continuous contact, and the contact condition of this time needs to be judged according to the contact condition of the last time, so that in order to conveniently identify the detection result of the last time, the controller sets different marks according to the detection result and stores the marks in the memory.
Specifically, when the fact that the touch pen is not contacted with the surface of the sensor is detected, a first mark is set, the indication mark in the memory is updated, namely the original indication mark in the memory is deleted, and then the first mark is used as the indication mark to be stored, so that when the touch pen contacts the surface of the sensor next time, the fact that the touch is initial contact can be recognized through the first mark; when the initial contact is detected, setting a second mark and updating the indication mark in the memory; when a second contact is detected, a third flag is set and the indicator in the memory is updated.
That is, to facilitate recognition of an initial contact, therefore, when the stylus is not in contact with the sensor surface, it is necessary to make a first flag setting for this non-contact and update the indication flag in the reservoir.
Step 116, whether the power is turned off.
In a specific process, after the indication mark is set, the controller needs to determine whether the power of the touch screen is turned off. In the determination processing of step 116, when it is determined that the power is not turned off, the processing from step 104 is repeated, and when it is determined that the power is turned off, the processing proceeds to step 117.
Step 117, the process ends.
In a specific procedure, when it is determined in the determination processing of step 116 that the power supply is turned off, the controller controls the power supply circuit to stop the preset end processing such as the power supply from the power supply to each portion, thereby ending the detection of the movement of the stylus pen with respect to the sensor surface.
When the stylus is in contact with the sensor surface, step 106 is entered.
And 106, detecting the relative position of the stylus relative to the sensor surface, and determining the position coordinate value of the stylus according to the relative position.
In a specific process, when it is determined in the determination of step 106 that the stylus is in contact with the sensor surface, in order to avoid the problem of delay period caused by the determination of accidental sliding, the relative position of the stylus with respect to the sensor surface is further detected, and the position coordinate value of the stylus is determined according to the relative position.
In step 107, the indicator in the memory is extracted, and it is determined whether the indicator is the first indicator.
In a specific process, after determining the contact between the stylus and the sensor surface, the controller needs to determine the contact number, so that the indication mark in the memory needs to be extracted, and the indication mark is used as the basis for determination.
First, it is determined whether the contact is an initial contact, and if the contact is an initial contact, that is, the last time there is no contact, the indication flag should be a first flag, and if the contact is not an initial contact, the indication flag is not a first flag. Thus, if the indicator flag is a first flag, indicating that the contact is an initial contact, step 118 is entered; if the indication flag is not the first flag, indicating that it is not an initial contact, step 108 is entered.
Step 108, extracting the initial value and the floating value of the pen pressure in the memory.
In a specific process, when not the initial contact, it is necessary to determine whether the contact is a contact due to unexpected sliding. When the operation method of the touch screen sensor provided by the embodiment of the invention judges unexpected sliding, the operation method is firstly judged through the change of the pen pressure value, and if the pen pressure value is quite unstable and the pen pressure value floats greatly, the unexpected sliding is most likely to be caused.
Therefore, the judgment basis of the pen pressure floating needs to be extracted, namely, the initial pen pressure value stored in the memory in step 103 and the pen pressure floating value set and stored in the memory.
Step 109, detecting the voltage value of the current stylus, and judging whether the voltage value is within the voltage floating range of the stylus according to the voltage initial value and the voltage floating value.
In a specific process, according to the initial value of the pen pressure and the floating value of the pen pressure extracted in step 108, a floating range of the pen pressure value is calculated, the current pen pressure value of the touch pen is detected, and then whether the current pen pressure value is within a specified floating range is judged according to the floating range calculated by the initial value of the pen pressure and the floating value of the pen pressure.
If the pen pressure value is within the pen pressure floating range, which indicates that there is no unexpected sliding in the contact, further judgment is needed, and step 110 is entered; if the pen pressure value is not within the pen pressure float range, indicating that there is unexpected slippage with this contact, step 119 is entered.
Step 119, change the position coordinate value.
In a specific process, when there is unexpected sliding, the position coordinate value measured at this time needs to be changed according to the position coordinate value at the last time. For example, the position coordinate value at this time may be changed to the position coordinate value of the last contact.
Step 120, the modified position coordinate value is set as the current coordinate value, and the current coordinate value is transmitted.
In a specific process, the changed position coordinate value is set as the current coordinate value, and is transmitted to a controller of the touch sensor for subsequent processing.
And after step 120 is performed, returning to step 105, determining the activity of the stylus relative to the sensor surface again, and detecting at predetermined time intervals until the power-off end processing.
Next, analysis is performed on the case where the pen pressure value is within the pen pressure floating range. When the pen pressure value is within the pen pressure floating range, step 110 is entered from step 109.
Step 110, updating the initial value of the pen pressure in the memory according to the pen pressure value.
In a specific process, the user may decrease the wrist force with the increase of the use time of the stylus, or change the pen pressure in a small range due to other reasons, so as to ensure the accuracy of pen pressure judgment, and update the initial pen pressure value in the memory along with the current pen pressure value.
Step 111, it is determined whether the indication flag is a second flag.
In a specific process, after determining that the contact is not the initial contact, it is necessary to further determine whether the contact is the second contact. If the indicator flag is a second flag, indicating a second contact, then step 112 is entered; if the indicator flag is not the second flag, illustrated as continuous contact, step 114 is entered.
In the case of the second contact, the routine proceeds to step 112, where a determination of a time threshold is entered.
Step 112, extracting a preset time threshold in the memory, and judging whether the time elapsed from the initial position to the current position of the stylus exceeds the time threshold.
In a specific process, when accidental sliding occurs, the movement time of the stylus is relatively short, i.e. instantaneous sliding occurs. Therefore, it is also necessary to judge whether there is unexpected slip by the time interval elapsed by the action.
If the time threshold is not exceeded, indicating that there is a possibility of unexpected slip, step 119 is entered for further processing in which unexpected slip is present; if the time threshold is exceeded, it is indicated that there is no unexpected slip and this time the second contact, step 113 is entered.
Step 113, setting a third flag and updating the indication flag in the memory.
In a specific procedure, to facilitate the identification of the next time there is a continuous contact, it is necessary to set a third flag and update the indicator in the memory, and then go to step 114.
Step 114, setting the position coordinate value as the current coordinate value of the stylus and transmitting the current coordinate value.
In a specific process, when no unexpected sliding exists, the position coordinate value measured at this time is set as the current coordinate value of the touch pen, and then the current coordinate value is transmitted to a controller of the touch sensor for further processing. Meanwhile, after step 114 is performed, the process returns to step 105, the activity of the stylus pen relative to the sensor surface is determined again, and detection is performed at predetermined time intervals until the power-off end process.
When the indication flag is the first flag, step 118 is entered.
The following describes a processing step when the contact is an initial contact, and the process proceeds from the discrimination step 107 to step 118.
Step 118, the second flag is set and the indicator in the memory is updated.
In a specific process, when the initial contact is determined, a second mark needs to be set and the indication mark in the memory is updated, so that the next contact condition determination is convenient. And proceeds to step 114 after step 118 is performed.
Step 114 is entered directly from decision step 111 when the indicator is neither the first nor the second indicator, i.e. when it is determined that the indicator is not the second indicator.
In addition, since the friction characteristics of the touch pens are different, different time thresholds and pen pressure floating values need to be set for different touch pens. Specifically, receiving identification information sent by a touch pen; extracting material properties of a pen point of the touch control pen in the identification information; determining the friction characteristic of the touch pen according to the material property of the pen point; the corresponding time threshold is set according to the friction characteristic and stored in the memory, and the corresponding pen pressure floating value is set according to the friction characteristic and stored in the memory.
According to the operation method of the touch screen sensor, provided by the embodiment of the invention, the double judgment mode of the pen pressure floating value and the time threshold is adopted, so that the interaction action formed by accidental sliding of the touch pen on the surface of the touch screen is avoided as far as possible, meanwhile, the touch sensor still detects the position of the touch pen at preset time intervals and outputs corresponding coordinate values according to specific conditions, so that the touch sensor responds to the relative action of the touch pen at any time and timely feeds back, the problem of delay period does not exist, and better use experience can be provided for a user.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative elements and steps are described above generally in terms of function in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware, in a software module executed by a processor, or in a combination of the two. The software modules may be disposed in Random Access Memory (RAM), memory, read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (8)
1. A method of operating a touch screen sensor, the method comprising:
detecting movement of the stylus relative to the sensor surface;
judging whether the touch pen is in contact with the sensor surface according to the activity of the touch pen relative to the sensor surface;
if the touch pen is contacted with the sensor surface, detecting the relative position of the touch pen relative to the sensor surface, and determining a position coordinate value of the touch pen according to the relative position;
extracting an indication mark in a memory, and determining whether the indication mark is a first mark;
extracting a pen pressure initial value and a pen pressure floating value in the memory if the indication mark is not the first mark;
detecting a current pen pressure value of the touch pen, and judging whether the pen pressure value is in a pen pressure floating range of the touch pen according to the pen pressure initial value and the pen pressure floating value;
if the pen pressure value is within the pen pressure floating range, determining whether the indication mark is a second mark;
if the indication mark is the second mark, extracting a preset time threshold value in the memory, and judging whether the time from the initial position to the current position of the touch pen exceeds the time threshold value or not;
if the time threshold is exceeded, setting a third flag and updating the indicator in the memory;
setting the position coordinate value as the current coordinate value of the touch control pen, and transmitting the current coordinate value;
the operation method further comprises the following steps:
receiving identification information sent by the touch pen;
extracting material properties of a pen point of the touch control pen from the identification information;
determining the friction characteristic of the touch pen according to the material property of the pen point;
setting the corresponding time threshold according to the friction characteristic and storing the time threshold in the memory;
the operation method further comprises the following steps:
and setting the corresponding pen pressure floating value according to the friction characteristic, and storing the pen pressure floating value in the memory.
2. The method of operation of a touch screen sensor of claim 1, wherein after said determining whether the stylus is in contact with the sensor surface based on the activity of the stylus relative to the sensor surface, the method of operation further comprises:
if the stylus is not in contact with the sensor surface, the first flag is set and the indicator in the memory is updated.
3. The method of operation of a touch screen sensor of claim 1, wherein after the retrieving the indication flag in the memory and determining whether the indication flag is a first flag, the method of operation further comprises:
if the indication flag is the first flag, setting the second flag and updating the indication flag in the memory;
setting the position coordinate value as the current coordinate value of the stylus and transmitting the current coordinate value.
4. The operation method of a touch screen sensor according to claim 1, wherein after said determining whether the pen pressure value is within a pen pressure floating range of the touch pen according to the pen pressure initial value and the pen pressure floating value, the operation method further comprises:
if the pen pressure value is not in the pen pressure floating range, changing the position coordinate value;
setting the changed position coordinate value as the current coordinate value, and transmitting the current coordinate value.
5. The method of claim 1, wherein determining whether the indicator is a second indicator if the pen pressure value is within the pen pressure float range comprises:
if the pen pressure value is in the pen pressure floating range, updating the pen pressure initial value in the memory according to the pen pressure value;
determining whether the indicator is the second flag.
6. The method of operation of a touch screen sensor of claim 1, wherein after said determining if said indicator is a second indicator if said pen pressure value is within said pen pressure float range, said method of operation further comprises:
if the indication mark is not the second mark, setting the position coordinate value as the current coordinate value, and transmitting the current coordinate value.
7. The operation method of a touch screen sensor according to claim 1, wherein after extracting a time threshold preset in the memory if the indication flag is the second flag, judging whether or not the time elapsed from an initial position to a current position of the stylus exceeds the time threshold, the operation method further comprises:
if the time threshold is not exceeded, changing the position coordinate value;
setting the changed position coordinate value as the current coordinate value, and transmitting the current coordinate value.
8. The method of operation of a touch screen sensor of claim 1, wherein prior to said detecting stylus activity with respect to a sensor surface, the method of operation further comprises:
detecting the inclination angle and the initial pen pressure value of the touch pen;
determining the initial value of the pen pressure of the touch control pen according to the inclination angle and the initial pen pressure value;
and storing the initial value of the pen pressure in the memory.
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