CN113037268B - Method and device for adjusting key touch threshold - Google Patents

Abstract

The disclosure discloses a method and a device for adjusting a key touch threshold, and relates to the field of key control. The method comprises the following steps: judging whether the capacitance value of the key to be regulated is recorded as a first capacitance value or not according to the number of the effective keys, the touched effective time of the key to be regulated, the updated lower limit value of the capacitance threshold and the average value of the noise capacitance; and when the number of the recorded first capacitance values of the keys to be adjusted is larger than a first number threshold value, adjusting the touch threshold value of the keys to be adjusted according to the average value of the recorded first capacitance values of the keys to be adjusted. According to the method for adjusting the touch threshold of the key, the accuracy of calculation of the touch threshold is improved, the sensitivity of the touch key is ensured to be kept at a proper level all the time, and the touch threshold can be adjusted when the capacitance value of the touch key is small, so that the key can be operated normally.

Description

Method and device for adjusting key touch threshold

Technical Field

The present disclosure relates to the field of key control, and in particular to a method and device for adjusting a key touch threshold.

Background technique

Touch buttons are increasingly widely used, and the sensitivity of touch buttons directly affects the application of buttons. In related technologies, the capacitance value of each button is recorded and the number of times the button is touched is counted. When the number of times the button is touched reaches a set number, it is determined whether there is abnormal data in the data. If there is abnormal data, the abnormal data is deleted and the capacitance value is re-obtained to make up for the touch capacitance value of the set number of times until there is no abnormal data, and the average capacitance value of the button of the set number of times is calculated to obtain the touch capacitance value threshold.

In the related art, when recording the capacitance value of each touch button, the consideration is not comprehensive enough, which will lead to the touch threshold finally calculated to be not ideal, and still affect the sensitivity of the button.

Summary of the invention

A technical problem to be solved by the present disclosure is to provide a method and device for adjusting a key touch threshold, which can improve the accuracy of touch threshold calculation and ensure that the touch key sensitivity is always maintained at an appropriate level.

According to one aspect of the present disclosure, a method for adjusting a key touch threshold is proposed, comprising: judging whether to record a capacitance value of a key to be adjusted as a first capacitance value according to the number of valid keys, the effective touch time of the key to be adjusted, a capacitance threshold update lower limit value, and a noise capacitance average value; and adjusting the touch threshold of the key to be adjusted according to the average value of the recorded first capacitance values of the key to be adjusted when the number of recorded first capacitance values of the key to be adjusted is greater than a first numerical threshold.

In some embodiments, determining whether to record the capacitance value of the key to be adjusted as the first capacitance value includes: when the key to be adjusted is a valid key, and the effective touch time is less than the effective duration, and the number of valid keys within the same time is less than or equal to a second numerical threshold, recording the capacitance value of the key to be adjusted as the first capacitance value; when the key to be adjusted is an invalid key, but the capacitance value of the key to be adjusted is greater than the capacitance threshold update lower limit value, recording the capacitance value of the key to be adjusted as the first capacitance value; and when the key to be adjusted is an invalid key, and the capacitance value of the key to be adjusted is less than or equal to the threshold update lower limit value, if it is detected that the capacitance value of the key to be adjusted is greater than the first multiple of the average value of the noise capacitance for a number greater than the number threshold, then recording the capacitance value of the key to be adjusted as the first capacitance value.

In some embodiments, when the capacitance value of the key to be adjusted is less than the noise capacitance threshold and less than the second multiple of the noise capacitance average value, the capacitance value of the key to be adjusted is recorded as the second capacitance value, wherein the second multiple is less than the first multiple, and the noise capacitance threshold is less than the threshold update lower limit value; and the average value of the second capacitance values of the key to be adjusted recorded multiple times is calculated to obtain the noise capacitance average value.

In some embodiments, when the capacitance value of the key to be adjusted is greater than the effective capacitance threshold, the key to be adjusted is determined to be a valid key.

In some embodiments, adjusting the touch threshold of the key to be adjusted according to the recorded average value of the first capacitance value of the key to be adjusted includes: taking the capacitance value obtained by removing the second multiple of the average value of the noise capacitance from the average value of the first capacitance value of the key to be adjusted as the touch threshold of the key to be adjusted.

In some embodiments, adjusting the touch threshold of the key to be adjusted according to the recorded average value of the first capacitance value of the key to be adjusted includes: multiplying the average value of the first capacitance value of the key to be adjusted by the noise impact factor coefficient, and obtaining the capacitance value as the touch threshold of the key to be adjusted, wherein the noise impact factor coefficient is less than 1.

According to another aspect of the present disclosure, a device for adjusting a key touch threshold is also proposed, comprising: a capacitance value recording unit, configured to determine whether the capacitance value of the key to be adjusted is recorded as a first capacitance value based on the number of valid keys, the effective touch time of the key to be adjusted, the capacitance threshold update lower limit value and the noise capacitance average value; and a touch threshold adjustment unit, configured to adjust the touch threshold of the key to be adjusted according to the average value of the recorded first capacitance values of the key to be adjusted when the number of recorded first capacitance values of the key to be adjusted is greater than a first number threshold.

In some embodiments, the capacitance value recording unit is configured to record the capacitance value of the key to be adjusted as the first capacitance value when the key to be adjusted is a valid key, the effective touch time is less than the effective duration, and the number of valid keys within the same time is less than or equal to a second numerical threshold; to record the capacitance value of the key to be adjusted as the first capacitance value when the key to be adjusted is an invalid key, but the capacitance value of the key to be adjusted is greater than the capacitance threshold update lower limit value; and to record the capacitance value of the key to be adjusted as the first capacitance value when the key to be adjusted is an invalid key, and the capacitance value of the key to be adjusted is less than or equal to the threshold update lower limit value, if it is detected that the capacitance value of the key to be adjusted is greater than the first multiple of the average value of the noise capacitance for a number greater than the number threshold.

In some embodiments, the noise capacitance average value adjustment unit is configured to calculate the average value of the second capacitance values of the key to be adjusted that are recorded multiple times to obtain the noise capacitance average value, wherein the capacitance value recording unit is also configured to record the capacitance value of the key to be adjusted as the second capacitance value when the capacitance value of the key to be adjusted is less than the noise capacitance threshold and less than the second multiple of the noise capacitance average value, wherein the second multiple is less than the first multiple, and the noise capacitance threshold is less than the threshold update lower limit value.

According to another aspect of the present disclosure, a device for adjusting a key touch threshold is also proposed, comprising: a memory; and a processor coupled to the memory, wherein the processor is configured to execute the above method for adjusting the key touch threshold based on instructions stored in the memory.

According to another aspect of the present disclosure, a non-transitory computer-readable storage medium is also provided, on which computer program instructions are stored, and when the instructions are executed by a processor, the above-mentioned method for adjusting the key touch threshold is implemented.

In the disclosed embodiments, by optimizing the touch threshold adjustment method of the key, the accuracy of the touch threshold calculation is improved to ensure that the sensitivity of the touch key is always maintained at an appropriate level, and the touch threshold can be adjusted even when the capacitance value of the touch key is very small, so that the key can operate normally.

Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

The present disclosure may be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

FIG. 1 is a schematic flow chart of some embodiments of the method for adjusting a key touch threshold according to the present disclosure.

FIG. 2 is a schematic flow chart of other embodiments of the method for adjusting a key touch threshold according to the present disclosure.

FIG. 3 is a schematic diagram of the structure of some embodiments of the device for adjusting a key touch threshold according to the present disclosure.

FIG. 4 is a schematic diagram of the structure of other embodiments of the device for adjusting a key touch threshold according to the present disclosure.

FIG. 5 is a schematic diagram of the structure of other embodiments of the device for adjusting a key touch threshold according to the present disclosure.

Detailed ways

Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless otherwise specifically stated.

At the same time, it should be understood that for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present disclosure, its application, or uses.

Technologies, methods, and apparatus known to ordinary technicians in the relevant field may not be discussed in detail, but where appropriate, such technologies, methods, and apparatus should be considered part of the authorization specification.

In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values.

It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

In order to make the objectives, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

When using touch buttons, users usually press harder and harder when they long press the buttons, causing the capacitance value of the buttons to increase. If the capacitance value of the buttons at this time is recorded, the final calculated touch threshold will be too high, resulting in a lower sensitivity of the buttons. If the capacitance values of multiple buttons change at the same time, it means that the button operation is not normal. For example, when the user is wiping the button panel, if the capacitance value of the buttons is recorded at this time, the calculated threshold value is not the threshold value obtained when the user presses the buttons normally, resulting in the adjusted button sensitivity not being the appropriate sensitivity.

In addition, in the related art, the difference between the capacitance value of a key and the average value is normal data only when it is within the preset difference range, otherwise it will not be recorded. However, the "preset difference" is fixed and cannot be adjusted automatically, and in order to prevent malfunctions, the "preset difference" is generally not set very small. This will result in extreme situations, such as when the touch key board is not firmly attached to the panel and there is a large gap, the capacitance value will change less when the key is pressed, and the "preset difference" will not be reached, so the threshold will not be adjusted, resulting in complete failure of the key.

FIG. 1 is a schematic flow chart of some embodiments of the method for adjusting a key touch threshold according to the present disclosure.

In step 110, it is determined whether the capacitance value of the key to be adjusted is recorded as the first capacitance value according to the number of valid keys, the effective touch time of the key to be adjusted, the capacitance threshold update lower limit value and the noise capacitance average value.

In this step, not every time the capacitance value of the key to be adjusted is detected, the capacitance value is recorded as the first capacitance value. The first capacitance threshold is a parameter for subsequently calculating the touch threshold of the key. The key to be adjusted is a touch key.

In some embodiments, when the key to be adjusted is a valid key, and the effective touch time is less than the effective duration, and the number of valid keys in the same time is less than or equal to the second numerical threshold, the capacitance value of the key to be adjusted is recorded as the first capacitance value.

When a human body or other conductive object approaches the touch key, the capacitance value of the key will change. In some embodiments, the capacitance value C of each key is detected at predetermined intervals, and when the capacitance value C of the key is greater than the effective capacitance threshold Cy, the key is determined to be a valid key, that is, the key is effectively touched. When there are multiple keys, the number of valid keys N and the duration T of the valid keys in the same time are recorded. When the number of valid keys in the same time is greater than the second threshold number, for example, greater than 1 or 2, it means that it is not a normal key operation, and therefore, the capacitance value at this time is not used as a parameter for the subsequent calculation of the touch threshold of the key. When the effective time of the key being touched is greater than the effective duration, for example, greater than 1 second, it means that the user presses the key for a long time, and the capacitance value of the key will become larger and larger. Therefore, the capacitance value at this time is not used as a parameter for the subsequent calculation of the touch threshold of the key.

In some embodiments, when the key to be adjusted is an invalid key but the capacitance value of the key to be adjusted is greater than the capacitance threshold update lower limit value, the capacitance value of the key to be adjusted is recorded as the first capacitance value.

If the capacitance value of the key is too small, it may be a slight change in the capacitance value of the key caused by noise or abnormal operation in a short period of time. Therefore, it is necessary to use the capacitance value C of the key to be adjusted as a parameter for subsequent calculation of the touch threshold of the key only when it is greater than the capacitance threshold update lower limit value Cj.

In some embodiments, when the key to be adjusted is an invalid key and the capacitance value of the key to be adjusted is less than or equal to the threshold update lower limit value, if it is detected that the capacitance value of the key to be adjusted is greater than the first multiple of the average value of the noise capacitance for a number greater than the number threshold, the capacitance value of the key to be adjusted is recorded as the first capacitance value.

When the capacitance value of the key is relatively small, for example, less than the capacitance threshold update lower limit value Cj, if the capacitance value is detected to be greater than 1+K times the noise capacitance average value Cn for multiple times, it may be due to reasons such as a gap between the key plate and the panel that causes the key capacitance value to become smaller. At this time, the capacitance value can be used as a parameter for subsequent calculation of the key touch threshold.

In step 120, when the number of recorded first capacitance values of the key to be adjusted is greater than a first numerical threshold, the touch threshold of the key to be adjusted is adjusted according to an average value of the recorded first capacitance values of the key to be adjusted.

In some embodiments, when the number of recorded first capacitance values of the key to be adjusted reaches a preset number, the touch threshold of the key to be adjusted is calculated.

In some embodiments, the capacitance value obtained by removing the second multiple of the average value of the noise capacitance from the average value of the first capacitance value of the key to be adjusted is used as the touch threshold of the key to be adjusted, and the second multiple is smaller than the first multiple. The touch threshold is smaller than the average capacitance value of the key, and since the detected capacitance value accumulates the noise value, the touch threshold can be determined by subtracting the noise value.

In some embodiments, the capacitance value obtained by multiplying the average value of the first capacitance value of the key to be adjusted by the noise impact factor coefficient is used as the touch threshold of the key to be adjusted, wherein the noise impact factor coefficient is less than 1. The noise impact factor coefficient is set to 0.5-0.8, for example, to reduce the impact of noise on the touch threshold.

In the above embodiment, by optimizing the adjustment method of the touch threshold of the key, the accuracy of the touch threshold calculation is improved, ensuring that the sensitivity of the touch key is always maintained at an appropriate level, and the touch threshold can be adjusted even when the capacitance value of the touch key is very small, so that the key can operate normally.

In other embodiments of the present disclosure, when the capacitance value of the key to be adjusted is less than the noise capacitance threshold and less than the second multiple of the noise capacitance average value, the capacitance value of the key to be adjusted is recorded as the second capacitance value, wherein the second multiple is less than the first multiple, and the noise capacitance threshold is less than the threshold update lower limit value; the average value of the second capacitance values of the key to be adjusted recorded multiple times is calculated to obtain the noise capacitance average value.

When there is no object near the button, the capacitance value C of the button may also change due to power fluctuations, device parameter fluctuations, environmental changes or other reasons. This capacitance value is called the noise capacitance value, and the capacitance value C may be negative. In some embodiments, when the capacitance value C of the button to be adjusted is greater than 0, less than the noise capacitance threshold Ci, and less than K times the noise capacitance average value Cn, the capacitance value is recorded as a parameter for subsequent calculation of the noise capacitance average value. The value of K is, for example, 1.5 to 2, that is, the capacitance value C is included in the calculation of the noise capacitance value only when the capacitance value C of the button is less than 1.5 to 2 times the noise capacitance average value.

In some embodiments, the noise capacitance average value Cn is calculated using the formula Cn=∑Cm/m, where Cm is the second capacitance value recorded for the mth time. In some embodiments, the maximum value of m is 100. When the recorded second capacitance values exceed 100, the second capacitance values recorded earlier are eliminated to update the calculated noise capacitance average value. Those skilled in the art should understand that the maximum value of m can be set according to actual conditions.

In the above embodiment, the average value of the noise capacitance can be dynamically adjusted, and then when the capacitance value of the key is small, it is determined whether to record the capacitance value of the key based on the size of the capacitance value of the key and the average value of the noise capacitance. When the capacitance value of the key is small, while avoiding false operation of the key caused by noise, the threshold can also be adjusted so that the key can respond normally.

FIG. 2 is a schematic flow chart of other embodiments of the method for adjusting a key touch threshold according to the present disclosure.

In step 210, the number N of valid keys and the effective time T of each key being touched are recorded.

In some embodiments, each key has a corresponding effective capacitance threshold Cy, and the capacitance value C of each key is detected periodically, for example, the capacitance value C of each key is detected every 10 ms. When the capacitance value of the key reaches the effective capacitance threshold Cy, the key is recorded as a valid key.

In step 220 , it is determined whether the key to be adjusted is a valid key. If so, step 230 is executed; otherwise, step 270 is executed.

In step 230 , it is determined whether the number N of valid keys in the same time is greater than 0 and less than or equal to 2. If so, step 240 is executed; otherwise, step 260 is executed.

In this step, the number threshold is set to 2. For linkage keys or combination keys, two keys may be touched at the same time. Those skilled in the art should understand that if there is no combination key, the number threshold should be set to 1. If there is a combination key, but the number of combination keys is 3, the number threshold should be set to 3.

In step 240 , it is determined whether the effective time T of the key to be adjusted being touched is less than or equal to 1 second. If so, step 250 is executed; otherwise, step 260 is executed.

At step 250 , the capacitance value is recorded as a first capacitance value.

In step 260, the capacitance value is not recorded.

When users press a button for a long time, they usually press harder and harder, which causes the button capacitance value to increase. If the button capacitance value is recorded at this time, the final calculated threshold value will be too high, resulting in a lower sensitivity for the next button press by the user. In addition, if the capacitance values of multiple buttons change at the same time, it means that it is not a normal button operation. It is possible that the user is wiping the button panel. If the button capacitance value is recorded at this time, the calculated threshold value is not the threshold value obtained when the user presses the button normally, resulting in the adjusted button sensitivity not being the appropriate sensitivity. Therefore, when the number of valid buttons is greater than 2, or the effective time T of the button being touched is greater than 1 second, the capacitance value is not recorded.

In step 270 , it is determined whether the capacitance value C of the key to be adjusted is greater than the capacitance threshold update lower limit value Cj. If so, step 250 is executed; otherwise, step 280 is executed.

Effective capacitance threshold Cy> capacitance threshold update lower limit Cj> noise capacitance threshold Ci.

A capacitance value that is too small may be a slight change in the capacitance of the button caused by noise or abnormal operation in a short period of time, and cannot be considered a normal capacitance value. Therefore, when there is no valid button, the capacitance value is recorded and included in the calculation of the touch threshold only when the capacitance value of the button to be adjusted is greater than a certain value Cj.

In step 280 , it is determined whether the capacitance value C of the key to be adjusted is greater than 1+K times of the average value Cn of the noise capacitance after k checks. If so, step 250 is executed; otherwise, step 260 is executed.

When the key capacitance value is relatively small, it may also be caused by a gap between the key plate and the panel. In this case, when the capacitance value is detected to be greater than 1+K times the average value of the noise capacitance Cn for multiple times, it is considered to be a normal user key operation, so the capacitance value will also be recorded to update the threshold so that the user's key operation can be responded to in this case.

In step 290 , it is determined whether the number of recorded first capacitance values reaches a predetermined number. If so, step 2100 is executed; otherwise, step 210 is continued to be executed.

In step 2100, the touch threshold of the key is calculated.

In some embodiments, the touch threshold Cq is calculated using the formula Cq=∑Cp/p-Cn*K, where Cp is the first capacitance value recorded for the pth time. In some embodiments, the maximum value of p is 100. When the first capacitance value recorded exceeds a predetermined number, the earliest recorded first capacitance threshold is removed to update the calculated touch threshold.

In the above embodiment, the records of capacitance values when there are multiple valid keys or when the duration of a valid key press exceeds 1 second can be eliminated to avoid the situation where the new threshold calculated from the capacitance values recorded in these cases is not an appropriate threshold; in addition, when the key capacitance value is small, while avoiding key misoperation caused by noise, the threshold can also be automatically adjusted so that the key can respond normally, so that the sensitivity of the touch key is always maintained at an appropriate level.

3 is a schematic diagram of the structure of some embodiments of the device for adjusting the key touch threshold of the present disclosure. The device includes a capacitance value recording unit 310 and a touch threshold adjustment unit 320.

The capacitance value recording unit 310 is configured to determine whether to record the capacitance value of the key to be adjusted as the first capacitance value according to the number of valid keys, the effective touch time of the key to be adjusted, the capacitance threshold update lower limit value and the noise capacitance average value.

In some embodiments, the capacitance value recording unit 310 is configured to record the capacitance value of the key to be adjusted as the first capacitance value when the key to be adjusted is a valid key, the effective touch time is less than the effective duration, and the number of valid keys within the same time is less than or equal to a second numerical threshold; to record the capacitance value of the key to be adjusted as the first capacitance value when the key to be adjusted is an invalid key, but the capacitance value of the key to be adjusted is greater than the capacitance threshold update lower limit value; and to record the capacitance value of the key to be adjusted as the first capacitance value when the key to be adjusted is an invalid key, and the capacitance value of the key to be adjusted is less than or equal to the threshold update lower limit value, if it is detected that the capacitance value of the key to be adjusted is greater than the first multiple of the average value of the noise capacitance for a number greater than the number threshold.

In some embodiments, when the capacitance value of the key to be adjusted is greater than the effective capacitance threshold, the key to be adjusted is determined to be a valid key.

The touch threshold adjustment unit 320 is configured to adjust the touch threshold of the key to be adjusted according to the average value of the recorded first capacitance values of the key to be adjusted when the number of the recorded first capacitance values of the key to be adjusted is greater than a first numerical threshold.

In some embodiments, the touch threshold adjustment unit 320 is configured to use the capacitance value obtained by removing the second multiple of the average value of the noise capacitance from the average value of the first capacitance value of the key to be adjusted as the touch threshold of the key to be adjusted.

In some embodiments, the touch threshold adjustment unit 320 is configured to obtain a capacitance value by multiplying the average value of the first capacitance value of the key to be adjusted by the noise impact factor coefficient as the touch threshold of the key to be adjusted, wherein the noise impact factor coefficient is less than 1.

In the above embodiment, by optimizing the adjustment method of the touch threshold of the key, it is ensured that the sensitivity of the touch key is always maintained at an appropriate level, and the touch threshold can be adjusted even when the capacitance value of the touch key is very small, so that the key can operate normally.

Fig. 4 is a schematic diagram of the structure of some other embodiments of the device for adjusting the key touch threshold of the present disclosure. The device also includes a noise capacitance average value adjustment unit 410.

The capacitance value recording unit 310 is also configured to record the capacitance value of the key to be adjusted as a second capacitance value when the capacitance value of the key to be adjusted is less than the noise capacitance threshold and less than the second multiple of the noise capacitance average value, wherein the second multiple is less than the first multiple, and the noise capacitance threshold is less than the threshold update lower limit value.

The noise capacitance average value adjustment unit 410 is configured to calculate the average value of the second capacitance values of the key to be adjusted that are recorded multiple times to obtain the noise capacitance average value.

In the above embodiment, the average value of the noise capacitance can be dynamically adjusted, and then when the capacitance value of the key is small, it is determined whether to record the capacitance value of the key based on the size of the capacitance value of the key and the average value of the noise capacitance. When the capacitance value of the key is small, while avoiding false operation of the key caused by noise, the threshold can also be adjusted so that the key can respond normally.

FIG5 is a schematic diagram of the structure of some other embodiments of the device for adjusting the key touch threshold of the present disclosure. The device 500 includes a memory 510 and a processor 520. Among them: the memory 510 can be a disk, a flash memory or any other non-volatile storage medium. The memory 510 is used to store the instructions in the embodiments corresponding to FIGS. 1 and 2. The processor 520 is coupled to the memory 510 and can be implemented as one or more integrated circuits, such as a microprocessor or a microcontroller. The processor 520 is used to execute the instructions stored in the memory.

In some embodiments, the processor 520 is coupled to the memory 510 via a BUS 530. The device 500 can also be connected to an external storage device 550 via a storage interface 540 to call external data, and can also be connected to a network or another computer system (not shown) via a network interface 560, which will not be described in detail here.

In this embodiment, the memory stores data instructions, and the processor processes the instructions, thereby solving the problem of unreasonable or incomplete adjustment of existing touch thresholds, which leads to insensitive or malfunctioning keys.

In other embodiments, a computer-readable storage medium stores computer program instructions, which, when executed by a processor, implement the steps of the method in the corresponding embodiments of Figures 1 and 2. It should be understood by those skilled in the art that the embodiments of the present disclosure can be provided as methods, devices, or computer program products. Therefore, the present disclosure can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present disclosure can take the form of a computer program product implemented on one or more computer-usable non-transient storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

The present disclosure is described with reference to the flowcharts and/or block diagrams of the methods, devices (systems) and computer program products according to the embodiments of the present disclosure. It should be understood that each process and/or box in the flowchart and/or block diagram and the combination of the processes and/or boxes in the flowchart and/or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for implementing the functions specified in one process or multiple processes in the flowchart and/or one box or multiple boxes in the block diagram.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device that implements the functions specified in one or more processes in the flowchart and/or one or more boxes in the block diagram.

These computer program instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and/or one or more boxes in the block diagram.

So far, the present disclosure has been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims (9)

1. A method of adjusting a key touch threshold, comprising:

When the key to be regulated is an effective key, and the effective time of the key to be regulated is less than the effective duration time, and the number of the effective keys in the same time is less than or equal to a second number threshold value, recording the capacitance value of the key to be regulated as a first capacitance value;

recording the capacitance value of the key to be regulated as a first capacitance value under the condition that the key to be regulated is an invalid key and the capacitance value of the key to be regulated is larger than the updated lower limit value of the capacitance threshold;

When the to-be-adjusted key is an invalid key and the capacitance value of the to-be-adjusted key is smaller than or equal to the threshold updating lower limit value, if the times that the capacitance value of the to-be-adjusted key is larger than the first times of the noise capacitance average value is detected to be larger than the times threshold value, recording that the capacitance value of the to-be-adjusted key is the first capacitance value; and

When the recorded number of the first capacitance values of the keys to be adjusted is larger than a first number threshold, adjusting the touch threshold of the keys to be adjusted according to the recorded average value of the first capacitance values of the keys to be adjusted.

2. The method of claim 1, further comprising:

When the capacitance value of the key to be adjusted is smaller than a noise capacitance threshold value and is smaller than a second multiple of the average value of the noise capacitance, recording the capacitance value of the key to be adjusted as a second capacitance value, wherein the second multiple is smaller than the first multiple, and the noise capacitance threshold value is smaller than the threshold updating lower limit value; and

And carrying out average value calculation on the second capacitance value of the key to be regulated recorded for multiple times to obtain the noise capacitance average value.

3. The method according to claim 1 or 2, wherein,

And when the capacitance value of the key to be regulated is larger than the effective capacitance threshold value, determining that the key to be regulated is an effective key.

4. The method of claim 2, wherein adjusting the touch threshold of the key to be adjusted according to the recorded average value of the first capacitance values of the key to be adjusted comprises:

and removing the average value of the first capacitance values of the keys to be adjusted, and taking the capacitance value obtained after the second multiple of the average value of the noise capacitance as the touch threshold value of the keys to be adjusted.

5. The method according to claim 1 or 2, wherein adjusting the touch threshold of the key to be adjusted according to the recorded average value of the first capacitance values of the key to be adjusted comprises:

And multiplying the average value of the first capacitance values of the keys to be regulated by a noise influence factor coefficient to obtain a capacitance value which is used as a touch threshold value of the keys to be regulated, wherein the noise influence factor coefficient is smaller than 1.

6. An apparatus for adjusting a key touch threshold, comprising:

The capacitance value recording unit is configured to record the capacitance value of the key to be regulated as a first capacitance value under the condition that the key to be regulated is an effective key, the effective time of the key to be regulated is smaller than the effective duration time, and the number of the effective keys in the same time is smaller than or equal to a second number threshold value; recording the capacitance value of the key to be regulated as a first capacitance value under the condition that the key to be regulated is an invalid key and the capacitance value of the key to be regulated is larger than the updated lower limit value of the capacitance threshold; and recording the capacitance value of the key to be regulated as a first capacitance value if the number of times that the capacitance value of the key to be regulated is detected to be larger than the first multiple of the average value of the noise capacitance is larger than a threshold value of times under the condition that the key to be regulated is an invalid key and the capacitance value of the key to be regulated is smaller than or equal to the lower limit value of the threshold value update; and

And the touch threshold adjusting unit is configured to adjust the touch threshold of the key to be adjusted according to the average value of the recorded first capacitance values of the key to be adjusted when the recorded first capacitance values of the key to be adjusted are larger than a first number threshold.

7. The apparatus of claim 6, further comprising:

A noise capacitance average value adjusting unit configured to perform average value calculation on the second capacitance values of the key to be adjusted recorded for a plurality of times to obtain the noise capacitance average value,

The capacitance value recording unit is further configured to record the capacitance value of the key to be adjusted as a second capacitance value when the capacitance value of the key to be adjusted is smaller than a noise capacitance threshold value and smaller than a second multiple of the average value of the noise capacitance, wherein the second multiple is smaller than the first multiple, and the noise capacitance threshold value is smaller than the threshold updating lower limit value.

8. An apparatus for adjusting a key touch threshold, comprising:

A memory; and

A processor coupled to the memory, the processor configured to perform the method of adjusting a key touch threshold of any of claims 1-5 based on instructions stored in the memory.

9. A non-transitory computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the method of adjusting a key touch threshold of any of claims 1 to 5.