CN107122089B - Touch operation judgment method and device for capacitive touch product - Google Patents
Touch operation judgment method and device for capacitive touch product Download PDFInfo
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
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- 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
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Abstract
The invention discloses a touch operation judgment method and device for a capacitive touch product, and belongs to the technical field of touch control. The method comprises the following steps: when the touch key surface deforms, judging whether the deformation amount of the touch key surface is larger than the deformation threshold value or not, wherein the deformation threshold value is determined based on the current moment volume of the touch product; and when the deformation amount of the surface of the touch key is not larger than the deformation threshold, not responding to touch operation, and otherwise, responding to touch operation. The touch control response method and the touch control response device can distinguish deformation generated by touch operation of a user from deformation caused by vibration interference, and the anti-interference performance and the accuracy of the touch control response method are improved. The method is used for responding to touch operation.
Description
Technical Field
The present invention relates to the field of touch technologies, and in particular, to a method and an apparatus for determining a touch operation in a capacitive touch product.
Background
With the development of science and technology, touch products are increasingly used in daily life of people, and meanwhile, people pay more attention to touch operation response of the touch products.
In the prior art, a capacitive touch product includes a System on Chip (SoC), a touch Chip and a touch key, where when a touch operation is performed on the touch key, the touch key deforms to a certain extent, so that a capacitance value of the touch key changes, the touch Chip can send the change of the capacitance value to the System on Chip in an electric signal manner, and the System on Chip sends a corresponding control signal to the touch Chip according to the electric signal to control the touch Chip to respond to the touch operation.
However, when the capacitive touch product is interfered by vibration, the touch key is also deformed, and since the touch operation on the surface of the touch key is not determined in the existing touch response method, the deformation caused by the vibration interference is also considered to be caused by the touch operation of the user, and then the touch chip generates a response according to the deformation caused by the vibration interference, and then a response error occurs, for example, when the volume of the capacitive touch product is suddenly changed, the capacitive touch product vibrates, and then a response error occurs. Therefore, the existing touch response method is poor in anti-interference performance and low in accuracy.
Disclosure of Invention
In order to solve the problem of low touch response accuracy caused by factors such as sound interference of a loudspeaker, abnormal vibration outside the touch device and the like in a touch product in the conventional touch response method, the embodiment of the invention provides a touch operation judgment method and device for a capacitive touch product. The technical scheme is as follows:
in a first aspect, a method for determining a touch operation in a capacitive touch product is provided, including:
when the touch key surface deforms, judging whether the deformation amount of the touch key surface is larger than the deformation threshold value or not, wherein the deformation threshold value is determined based on the current moment volume of the touch product;
and when the deformation amount of the surface of the touch key is not larger than the deformation threshold, not responding to touch operation, and otherwise, responding to touch operation.
Optionally, the determining whether the deformation amount of the surface of the touch key is greater than the deformation threshold includes:
comparing the deformation quantity of the surface of the touch key with the deformation quantity of the adjacent area of the touch key;
and when the difference value between the deformation amount of the touch key surface and the deformation amount of the adjacent area is larger than a threshold value, comparing the deformation amount of the touch key surface with the deformation threshold value.
Optionally, the deformation threshold is determined based on the current volume of the touch product, and specifically includes:
acquiring the current moment volume of the touch product, and determining the deformation quantity caused by the current moment volume;
determining an additional deformation quantity, wherein the additional deformation quantity comprises at least one of a deformation quantity corresponding to accompanying sound power, a deformation quantity corresponding to a sound effect mode and a deformation quantity corresponding to a design error of a touch key;
and determining the deformation threshold according to the deformation quantity caused by the volume at the current moment and the additional deformation quantity.
Optionally, the determining the deformation threshold according to the deformation amount caused by the volume at the current time and the additional deformation amount includes:
determining a deformation coefficient for reflecting the sensitivity of the touch key to the volume;
determining the product of the deformation coefficient and the deformation quantity caused by the volume at the current moment;
determining a sum of the product and the additional deformation amount as the deformation threshold.
Optionally, the number of the adjacent regions is two, the two adjacent regions are arranged on two sides of the touch key along a specified direction, and the shape of each adjacent region is identical to that of the touch key.
Optionally, a gap distance between the adjacent area and the touch key is greater than twice a width of the touch key, and the width of the touch key is a maximum size of the touch key in a specified direction.
In a second aspect, a touch operation determination method for a capacitive touch product is provided, including:
when the surface of the touch key deforms, comparing the deformation quantity of the surface of the touch key with the deformation quantity of the adjacent area of the touch key;
and when the difference value between the deformation amount of the surface of the touch key and the deformation amount of the adjacent area is not larger than the threshold value, not responding to touch operation, and otherwise, responding to touch operation.
In a third aspect, a touch operation determination apparatus for use in a capacitive touch product is provided, including:
the judging module is used for judging whether the deformation amount of the touch key surface is larger than the deformation threshold value when the touch key surface deforms, wherein the deformation threshold value is determined based on the current time volume of the touch product;
and the processing module is used for not responding to the touch operation when the deformation amount of the surface of the touch key is not larger than the deformation threshold value, and otherwise, responding to the touch operation.
Optionally, the determining module includes:
the first comparison submodule is used for comparing the deformation quantity of the surface of the touch key with the deformation quantity of the adjacent area of the touch key;
and the second comparison submodule is used for comparing the deformation amount of the touch key surface with the deformation threshold when the difference value between the deformation amount of the touch key surface and the deformation amount of the adjacent area is greater than the threshold.
In a fourth aspect, a touch operation determination apparatus for use in a capacitive touch product is provided, including:
the comparison module is used for comparing the deformation quantity of the surface of the touch key with the deformation quantity of the adjacent area of the touch key when the surface of the touch key deforms;
and the processing module is used for not responding to the touch operation when the difference value between the deformation quantity of the surface of the touch key and the deformation quantity of the adjacent area is not larger than a threshold value, and otherwise, responding to the touch operation.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
according to the touch operation judgment method and device for the capacitive touch product provided by the embodiment of the invention, when the surface of the touch key deforms, whether the deformation amount of the surface of the touch key is larger than the deformation threshold value or not is judged, and when the deformation amount of the surface of the touch key is not larger than the deformation threshold value, the touch operation is not responded, so that the deformation generated by the touch operation of a user and the deformation caused by vibration interference can be distinguished, the response to the deformation generated by the surface of the touch key due to the vibration interference is avoided to a certain extent, the probability of response errors is reduced, and the anti-interference performance and the accuracy of the touch response method are improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart of a touch operation determination method for a capacitive touch product according to an embodiment of the present invention;
fig. 2 is a flowchart of another touch operation determination method for a capacitive touch product according to an embodiment of the present invention;
fig. 3 is a flowchart of another touch operation determination method for a capacitive touch product according to an embodiment of the present invention;
fig. 4 is a schematic view of a television with a touch key according to an embodiment of the present invention;
fig. 5-1 is a schematic diagram of deformation amounts of a touch key 0 and a touch key 1 according to an embodiment of the invention;
fig. 5-2 is a schematic diagram of deformation amounts of another touch key 0 and another touch key 1 according to an embodiment of the present invention;
fig. 6 is a flowchart of a method for determining a deformation threshold based on a current-time volume of the touch product according to an embodiment of the present invention;
fig. 7-1 is a partially cut enlarged view of the touch key 1 in fig. 4;
fig. 7-2 is a flowchart of a method for determining a deformation threshold according to a deformation amount caused by the volume at the current time and an additional deformation amount according to an embodiment of the present invention;
fig. 8-1 is a schematic structural diagram of a touch operation determination device for use in a capacitive touch product according to an embodiment of the present invention;
fig. 8-2 is a schematic structural diagram of a determining module according to an embodiment of the present invention;
fig. 8-3 is a schematic structural diagram of another touch operation determination device for use in a capacitive touch product according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of another touch operation determination device for use in a capacitive touch product according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
An embodiment of the present invention provides a method for determining a touch operation in a capacitive touch product, as shown in fig. 1, the method may include:
Wherein the deformation threshold is determined based on the current time volume of the touch product.
And 102, when the deformation amount of the surface of the touch key is not larger than the deformation threshold, not responding to the touch operation, otherwise, responding to the touch operation.
It should be noted that, when the capacitive touch product responds to a touch operation, the capacitive touch product responds according to a capacitance change on the surface of the touch key, but the capacitance change on the surface of the touch key is represented by a deformation amount on the surface of the touch key, so the essence of determining whether to perform the touch response is mainly to determine whether the surface of the touch key is deformed, and when the deformation amount on the surface of the touch key is not greater than a deformation threshold, the deformation is considered to be caused by vibration interference, and the occurrence of a response error can be avoided by prohibiting the touch response on the surface of the touch key, so that the influence of the vibration interference on the touch response method is shielded, and the anti-interference performance of the touch response method is further improved.
In summary, according to the touch operation determination method for the capacitive touch product provided by the embodiment of the invention, when the surface of the touch key deforms, by determining whether the deformation amount of the surface of the touch key is greater than the deformation threshold value, and when the deformation amount of the surface of the touch key is not greater than the deformation threshold value, the touch operation is not responded, so that the deformation generated by the touch operation of the user and the deformation caused by vibration interference can be distinguished, the response to the deformation generated by the surface of the touch key due to the vibration interference is avoided to a certain extent, the probability of response errors is reduced, and the anti-interference performance and the accuracy of the touch response method are improved.
Fig. 2 is another touch operation determination method for a capacitive touch product according to an embodiment of the present invention, as shown in fig. 2, the method may include:
And step 202, when the difference value between the deformation amount of the surface of the touch key and the deformation amount of the adjacent area is not larger than the threshold value, not responding to the touch operation, and otherwise, responding to the touch operation.
In summary, according to the touch operation determination method for the capacitive touch product provided in the embodiment of the present invention, when the surface of the touch key deforms, the deformation amount of the surface of the touch key is compared with the deformation amount of the adjacent area of the touch key, and when the difference between the deformation amount of the surface of the touch key and the deformation amount of the adjacent area is not greater than the threshold, the touch operation is not responded, so that the deformation caused by the touch operation of the user and the deformation caused by the vibration interference can be distinguished, the response to the deformation caused by the vibration interference on the surface of the touch key is avoided to a certain extent, the probability of occurrence of a response error is reduced, and the anti-interference performance and the accuracy of the touch response method are improved.
Fig. 3 is a further touch operation determination method for a capacitive touch product, which may be applied to a capacitive touch product capable of generating sound, and in the embodiment of the present invention, an implementation process of the method is described by taking an example that the method is applied to a television with touch keys, when the method is applied to other capacitive touch products (e.g., some medical display products or other commercial display products, etc.), implementation of the method in the touch product may refer to a process implemented on the television, as shown in fig. 3, and the method may include:
The realization of the touch control effect in the capacitive touch control product depends on the cooperation among the system-on-chip, the touch control chip and the touch control keys in the capacitive touch control product, wherein the touch control chip is used for detecting whether the surface of the touch control keys is deformed or not, when the deformation of the surface of the touch control keys is detected, the touch control chip feeds back the condition to the system-on-chip in the form of an electric signal, the system-on-chip judges whether touch control response needs to be carried out on the deformation or not according to the received electric signal, and when the touch control response needs to be carried out on the deformation, the system-on-chip sends a corresponding control signal to the touch control chip so as to. The method for detecting whether the surface of the touch key deforms by the touch chip may be a common method such as an optical interference method, and the embodiment of the invention is not particularly limited thereto.
When deformation of the surface of the touch key is detected, further judgment needs to be performed according to the deformation so as to determine whether to respond to the deformation, that is, step 302 is executed, when it is detected that no deformation of the surface of the touch key occurs, it is indicated that no touch operation occurs on the touch key, and no touch response is needed, the action is ended, or whether deformation occurs on the surface of the touch key is continuously detected until deformation occurs on the surface of the touch key is detected.
The adjacent area may be other touch keys adjacent to the touch key, may also be an area without a key function adjacent to the touch key, and may also be other touch keys adjacent to the touch key and an area without a key function at the same time. The two adjacent regions can be arranged on two sides of the touch key along the designated direction, the shape of each adjacent region is identical to that of the touch key, the distance of the gap between each adjacent region and the touch key is larger than twice of the width of the touch key, and the width of the touch key is the maximum size of the touch key in the designated direction. The designated direction may be a horizontal direction or a vertical direction, or the designated direction may also be another direction preset when the touch key is produced, which is not specifically limited in the embodiments of the present invention. For example, fig. 4 is a schematic diagram of a television with a touch key 1 installed thereon, as shown in fig. 4, one touch key 0 is respectively disposed on two sides of the touch key 1, the size of the touch key 0 is the same as that of the touch key 1, and the gap between the touch key 0 and the touch key 1 is equal to the diameter of the touch key 1, that is, in fig. 4, two touch keys 0 adjacent to the touch key 1 are disposed in adjacent areas, and the two touch keys 0 are disposed on two sides of the touch key 1 along a horizontal direction.
Generally, since the speakers are only disposed at certain positions of the touch product, the interference factors such as the volume, the accompanying sound power, the sound effect mode and the design error can only affect a small local range of the touch product, for example: only a single touch key or a single key and a small area around the key can be affected, so that the surface of the key is deformed. However, in the actual use process of the touch product, the touch product is not only affected by the interference factors such as the volume, the accompanying sound power, the sound effect mode and the design error, but also affected by other interference factors, and the other interference factors can affect the touch product in a large range, so that the touch product is deformed, and the deformation amplitudes are almost the same. For example: the shaking of the table can cause the whole touch product to vibrate, so that a plurality of positions and even the whole touch product deform, and the deformation amplitudes of the plurality of positions are the same. Therefore, before comparing the deformation amount of the surface of the touch key with the deformation threshold, the deformation amount of the surface of the touch key and the deformation amount of the adjacent area of the touch key can be compared to preliminarily eliminate the influence of other interference factors on the touch key.
Specifically, when comparing the deformation amount of the touch key surface with the deformation amount of the adjacent area of the touch key, if the difference between the deformation amount of the touch key surface and the deformation amount of the adjacent area of the touch key is greater than the preset difference, it may be determined that the deformation of the touch key surface is not caused by other interference factors, at this time, the deformation amount of the touch key surface is compared with the deformation threshold to determine whether the deformation of the touch key surface is caused by at least one of the volume, the accompanying sound power, the sound effect mode and the design error of the touch key, i.e. step 303 and step 304 are executed, for example, referring to fig. 5-1, the heights of the arcs above the touch key 0 and the touch key 1 respectively represent the deformation amounts generated on the surfaces of the touch key 0 and the touch key 1, and the height between two dotted lines in the figure represents the preset deformation amount difference, as can be seen from the figure, the difference between the deformation amount of the surface of the touch key 1 and the deformation amount of the surface of the touch key 0 is obviously greater than the preset difference, it can be determined that the deformation of the surface of the touch key is not caused by other interference factors; if the difference between the deformation amount of the surface of the touch key and the deformation amount of the adjacent area of the touch key is not greater than the preset difference, it can be considered that the deformation of the surface of the touch key is caused by other interference factors, and then the touch response to the deformation is not required to be performed, for example, as shown in fig. 5-2, if the deformation amount of the surface of the touch key 1 is almost the same as the deformation amount of the surface of the touch key 0, it can be determined that the deformation of the surface of the touch key is caused by other interference factors, and then the touch response to the deformation is prohibited.
For example, with continuing reference to fig. 5-1, the heights of the arcs above the touch key 0 and the touch key 1 respectively represent the deformation amounts of the surfaces of the touch key 0 and the touch key 1, and assuming that the deformation amount of the surface of the touch key 1 is 1.5 μm, the deformation amount of the surface of the touch key 0 is 0.5 μm, the threshold (i.e., the preset difference) is 0.2 μm, and the difference between the deformation amount of the surface of the touch key 1 and the deformation amount of the surface of the touch key 0 is 1.5 μm-0.5 μm-1 μm, since 1 μm >0.2 μm, it can be determined that the deformation of the surface of the touch key 1 is not caused by some other interference factors, and it is necessary to compare the deformation amount of the surface of the touch key 1 with the deformation threshold, and determine whether to respond to the deformation according to the comparison result.
It should be noted that the number of the adjacent regions, the distance between each adjacent region and the touch key, and the preset difference may be set according to actual situations, for example: the distance of the gap between each adjacent area and the touch key may be 2 to 6 times the width of the touch key, or the distance of the gap may also be appropriately adjusted to be less than 2 times or greater than 6 times the width of the touch key according to actual conditions, which is not specifically limited in the embodiment of the present invention.
And step 303, when the difference value between the deformation amount of the touch key surface and the deformation amount of the adjacent area is larger than the threshold value, determining a deformation threshold value based on the current time volume of the touch product.
Optionally, the deformation threshold may be reflected by not only the current time volume, but also factors such as an accompanying sound power, a sound effect mode, and a design error of the touch key, as shown in fig. 6, a process of determining the deformation threshold based on the current time volume of the touch product may include:
The volume is a main interference factor causing deformation of the surface of the touch key in the capacitive touch product capable of generating sound, and is also an interference factor causing frequent deformation of the surface of the touch key, so that the amount of deformation caused by the volume needs to be determined.
When the touch product is manufactured, a technician can debug the touch product to enable the touch product to emit sounds with different sizes, wherein the sounds are represented as the volume of the touch product, and when the touch product emits the sounds with different sizes, the technician can detect and record deformation generated on the surface of the touch key caused by the technician, store the corresponding relation formed by the volume and the deformation caused by the volume in a preset position of the touch product, and when the corresponding deformation is required to be determined according to the volume at the current moment, query the corresponding relation in the preset position to obtain the corresponding deformation.
For example, referring to table 1, the correspondence relationship between the sound volume and the amount of deformation may be referred to, and as shown in table 1, when the sound volume is 10 decibels (english: db), the amount of deformation caused by the correspondence relationship is 0.1 micrometers (english: μm), and when the sound volume is 20db, the amount of deformation caused by the correspondence relationship is 0.4 μm.
TABLE 1
The capacitive touch product can make sound and the volume of the sound made by the capacitive touch product is realized by controlling a loudspeaker in the touch product through the system on chip, so that the system on chip can obtain the volume at the current moment. And after the system on chip acquires the volume at the current moment, the system on chip can search in the corresponding relation table of the volume and the deformation quantity according to the volume so as to determine the deformation quantity caused by the volume at the current moment.
For example, referring to fig. 4, a surface portion of an area within a dashed line frame is a metal mesh enclosure, the metal mesh enclosure is a portion of a television housing, a speaker (not shown) and a touch chip are disposed inside the television, the positions of the metal mesh enclosure and the touch chip can correspond to the position of the metal mesh enclosure (for example, orthographic projections of the metal mesh enclosure and the touch chip on a plane on which the metal mesh enclosure is located are located on the metal mesh enclosure, as shown by a dashed circle in fig. 4, the position in the figure is only a schematic position and is not limited, and the touch chip can be disposed at any position of the metal mesh enclosure in practical application), fig. 7-1 is a partially cut enlarged view of the touch key 1 in fig. 4, an electrode plate 110 facing the metal mesh enclosure is disposed on a surface of the touch chip on a side close to the metal mesh enclosure, the electrode plate 110 and the metal mesh enclosure 120 facing the electrode plate form, in the television shown in fig. 4, the speaker emits sound through the metal mesh, the sound emitting direction is forward, when the user touches the touch key 1, the surface of the touch key is deformed, and at the time when the deformation of the surface of the touch key is detected, the volume of the television at the current time is 20db, and the deformation caused by the volume can be determined to be 0.4 μm by looking up the corresponding relationship shown in table 1.
Besides the volume, other interference factors may also deform the touch key surface, such as: the method comprises the following steps of (1) interfering factors such as the accompanying sound power of a touch product, the sound effect mode used by the touch product, and the design error of a touch key, wherein different sound effect modes are represented by different sound generation sections, for example: the stereo surround sound effect and the 3D sound effect may correspond to different sound frequency bands. The amount of deformation occurring on the surface of the touch key due to at least one of the accompanying sound power, the sound effect mode, and the design error of the touch key may be collectively referred to as an additional amount of deformation.
When a technician debugs a touch product, deformation quantity generated on the surface of a touch key of the touch product in different accompanying sound powers and different sound effect modes is recorded, the relation between the different accompanying sound powers and the deformation quantity can be expressed as a nonlinear curve, the corresponding relation between the accompanying sound powers and the deformation quantity can be obtained by performing analog-to-digital conversion on the nonlinear curve and sampling, the corresponding relation between the sound frequency bands and the deformation quantity corresponding to the different sound effect modes can also be expressed as a nonlinear curve, the corresponding relation between the sound frequency bands and the deformation quantity corresponding to the sound effect modes can be obtained by performing analog-to-digital conversion on the nonlinear curve and sampling, and the corresponding relation between the accompanying sound powers, the sound frequency bands and the deformation quantity can be stored in preset positions of the touch product, when the corresponding deformation quantity is determined according to the accompanying sound power and/or the pronunciation frequency band, the corresponding relation can be inquired in the preset position to obtain the corresponding deformation quantity.
For example, the correspondence relationship between the sound power and the amount of deformation may refer to table 2, and as shown in table 2, when the sound power is 8 watts (english: W), the amount of deformation caused by the sound power is 0.1 μm, and when the sound power is 10W, the amount of deformation caused by the sound power is 0.15 μm.
TABLE 2
For example, referring to table 3, the correspondence relationship between the sound frequency band corresponding to the sound effect mode and the deformation amount may be referred to, as shown in table 3, when the sound frequency band corresponding to the sound effect mode is 50 hertz (english: Hz), the deformation amount caused by the sound frequency band is 0.05 μm, and when the sound frequency band corresponding to the sound effect mode is 200Hz, the deformation amount caused by the sound frequency band corresponding to the sound effect mode is 0.1 μm.
TABLE 3
The design error of the touch key is determined by the production process, the design errors of touch products produced on the same production line are basically the same, and the deformation quantity generated on the surface of the touch key is basically the same, namely for the touch products of the same type produced in the same batch, the design error of the touch key enables the deformation quantity generated on the surface of the touch product to be basically the same, and the deformation value is fixed, so that a technician can detect the deformation value and store the deformation value in a preset position of the touch product when debugging the touch product, and can directly extract the deformation value in the preset position when determining the deformation value. For example, touch products produced on different production lines can generate deformation on the surface of the touch key of +/-0.04 μm, + -0.08 μm, +/-0.1 μm and the like.
And 3033, determining a deformation threshold according to the deformation quantity caused by the volume at the current moment and the additional deformation quantity.
Alternatively, as shown in fig. 7-2, the deformation threshold is determined according to the deformation caused by the volume at the current time and the additional deformation, and the determination formula is as follows:
L0＝AX+W。
wherein, X is a deformation amount caused by the volume at the current moment, a is a deformation coefficient for reflecting the sensitivity of the touch key to the volume, W is the sum of all the additional deformation amounts, and L0 is a deformation threshold.
Specifically, the process of determining the deformation threshold may include:
and step 3033a, determining a deformation coefficient for reflecting the sensitivity of the touch key to the volume.
The deformation coefficient reflecting the sensitivity of the touch key to the volume is mainly determined by the material of the touch key, and the coefficient can be tested and stored in a system on chip when a technician debugs and can be directly called when the deformation coefficient is used, or can be obtained by sampling and calculating for many times in the detection process. Optionally, for different touch key materials and different manufacturing processes, the sensitivity of the touch key to the volume is different, and the value range of the deformation coefficient reflecting the sensitivity is (0, 1).
And step 3033b, determining the product of the deformation coefficient and the deformation quantity caused by the volume at the current moment.
For example, assuming that the volume of the acquired television at the current time is 20db, the deformation amount caused by the volume is 0.4 μm, and the deformation coefficient of the sensitivity of the touch key of the television to the volume is 0.1, the product of the deformation coefficient and the deformation amount caused by the volume at the current time is 0.1 × 0.4 — 0.04 μm.
For example, assuming that the product of the deformation coefficient and the deformation caused by the current time volume is 0.04 μm, the accompanying sound power of the television is 10W, the sound frequency band corresponding to the sound effect mode of the television is 200Hz, the touch key is arranged on the metal mesh cover of the television to make the deformation generated by the touch key be 0.08 μm, by looking up tables 2 and 3, the distortion corresponding to the accompanying sound power of 10W is 0.3 μm, the distortion corresponding to the sound frequency band of 200Hz is 0.1 μm, the additional distortion includes the distortion corresponding to the accompanying sound power, the distortion corresponding to the sound effect mode and the distortion corresponding to the design error of the touch key, the sum of all additional deformation amounts is 0.48 μm +0.1 μm +0.08 μm, the sum of the product and the additional deformation amount is 0.04 μm +0.48 μm, which is 0.52 μm, i.e. the deformation threshold of the touch key is 0.52 μm.
And step 304, comparing whether the deformation amount of the surface of the touch key is larger than a deformation threshold value.
Because the deformation threshold is determined according to the vibration interference factors such as the volume, the sound effect mode, the design error of the touch key and the like, when the deformation amount of the surface of the touch key is not greater than the deformation threshold, it can be determined that the factor causing the deformation of the surface of the touch key is vibration interference, and is not a touch operation triggered by a user, the touch operation is not responded, that is, the touch response to the deformation caused by the surface of the touch key is prohibited, that is, step 305 is executed, when the deformation amount of the surface of the touch key is greater than the deformation threshold, it can be determined that the factor causing the deformation of the surface of the touch key is the touch operation triggered by the user, and the touch operation can be responded, that is, the touch response to the deformation caused by the surface of the touch key is.
It should be noted that, when the housing of the touch product is made of metal, the touch key and the housing made of metal are of an integral structure, and the sound emitting direction of the speaker is forward, since the volume, the accompanying sound power and the sound effect mode are the most frequent factors affecting the touch key, and the design error of the touch key is an unavoidable factor, comparing whether the deformation amount of the surface of the touch key is greater than the deformation threshold determined according to the volume, the accompanying sound power, the sound effect mode and the design error of the touch key, can distinguish the deformation generated by the touch operation of the user and the deformation caused by the vibration interference according to the comparison result, and determine whether to perform touch response on the deformation of the surface of the touch key, and can reduce the probability of occurrence of response errors to the greatest extent. In addition, in the process of judging whether the deformation of the surface of the touch key is generated by the touch operation triggered by the user, other interference factors are eliminated, and when the deformation is determined not to be caused by other interference factors, the deformation of the surface of the touch key is compared with whether the deformation is larger than a deformation threshold value, so that the deformation generated by the touch operation of the user and the deformation caused by vibration interference can be further distinguished, the interference resistance and the accuracy of the touch response method are further improved, meanwhile, the touch response is forbidden when the deformation is determined to be caused by other interference factors, the judgment process can be shortened, and the user experience can be further improved.
It should be further noted that steps 3031 to 3033 may also be performed between step 301 and step 302, that is, after deformation of the touch key surface is detected, a deformation threshold is determined according to the volume, the sound effect mode and the design error of the touch key, and then steps 302 and 304 are sequentially performed, that is, the deformation amount of the touch key surface is compared with the deformation amount of the adjacent area of the touch key, and when the difference between the deformation amount of the touch key surface and the deformation amount of the adjacent area is greater than the threshold, whether the deformation amount of the touch key surface is greater than the deformation threshold determined in step 303 is compared. Alternatively, step 302 may be optionally not executed, that is, after the deformation of the surface of the touch key is detected, a deformation threshold is determined according to the volume, the sound effect mode, and the design error of the touch key, and then, whether the deformation amount of the surface of the touch key is greater than the deformation threshold determined in step 303 is compared.
And 305, when the deformation amount of the surface of the touch key is not larger than the deformation threshold, not responding to the touch operation.
For example, assuming that the deformation amount of the touch key surface is 0.5 μm, and the determined deformation threshold is 0.52 μm, since 0.5 μm <0.52 μm, it can be determined that the factor for deforming the touch key surface is vibration interference, and is not a touch operation triggered by a user, the touch operation is not responded, that is, the touch response to the deformation of the touch key surface is prohibited.
And step 306, responding to the touch operation when the deformation amount of the surface of the touch key is larger than the deformation threshold value.
When the deformation amount of the surface of the touch key is larger than the deformation threshold, it can be considered that the deformation amount is generated by the touch key touched by the user, and then the touch operation is responded, that is, the touch response is performed on the deformation generated on the surface of the touch key, so as to realize the corresponding touch function.
In practical application, the deformation amount of the surface of the touch key may be compared with a deformation threshold, when the deformation amount of the surface of the touch key is greater than the deformation threshold, the deformation amount of the surface of the touch key is compared with the deformation amount of the adjacent region of the touch key, and when the difference between the deformation amount of the surface of the touch key and the deformation amount of the adjacent region is not greater than the threshold, the touch operation is not responded, that is, the touch response to the deformation of the surface of the touch key is prohibited, so as to avoid response errors, and further improve the anti-interference performance of the touch response method.
It should be noted that the method for performing a touch response based on the deformation amount in steps 301 to 306 may also be implemented indirectly by performing a touch response by measuring the capacitance value of the touch key, for example, the process of detecting whether the surface of the touch key deforms in step 301 may include: detecting whether a capacitance value corresponding to the touch key changes, determining that the surface of the touch key deforms when the capacitance value corresponding to the touch key changes, and determining that the surface of the touch key does not deform when the capacitance value corresponding to the touch key does not change; in step 304, when the touch key surface is deformed, the process of comparing whether the deformation amount of the touch key surface is greater than the deformation threshold may include: when the surface of the touch key deforms, comparing whether the capacitance variation corresponding to the touch key is larger than a capacitance variation threshold value or not, and when the capacitance variation corresponding to the touch key is larger than the capacitance variation threshold value, determining that the deformation of the surface of the touch key is larger than the deformation threshold value; and when the capacitance variation corresponding to the touch key is not greater than the capacitance variation threshold, determining that the deformation of the surface of the touch key is not greater than the deformation threshold. In the process of executing the above steps, the amount of deformation and the capacitance value may be converted according to a relationship between the amount of deformation and the capacitance value, where the relationship between the amount of deformation and the capacitance value is: c is 1 × 2 × S/D, where C is a capacitance value, 1 is an air dielectric constant, 2 is a dielectric constant of the touch key, S is a facing area of two electrode plates in the touch key, and D is a distance between the two electrode plates after deformation, that is, a deformation amount of the surface of the touch key.
In summary, in the touch operation determination method for a capacitive touch product according to the embodiments of the present invention, by comparing the deformation amount of the surface of the touch key with the deformation amount of the adjacent area of the touch key, when the difference between the deformation amount of the surface of the touch key and the deformation amount of the adjacent area is not greater than the threshold, it is determined whether the deformation amount of the surface of the touch key is greater than the deformation threshold, and when the deformation amount of the surface of the touch key is not greater than the deformation threshold, the touch operation is not responded, so that the deformation caused by the touch operation and the deformation caused by the vibration interference of the user can be distinguished, the response to the deformation caused by the vibration interference of the surface of the touch key is avoided to a certain extent, the probability of the occurrence of the response error is reduced, the interference resistance and the accuracy of the touch response method are improved, and the user does not worry about whether the, the question of the user on the television quality is reduced, and the user experience is further improved.
It should be noted that, the order of the steps of the touch operation determination method for a capacitive touch product according to the embodiments of the present invention may be appropriately adjusted, and the steps may also be increased or decreased according to the circumstances, and any method that can be easily changed within the technical scope disclosed in the present invention by those skilled in the art should be included in the protection scope of the present invention, and therefore, no further description is given.
An embodiment of the present invention provides a touch operation determining device 800 for use in a capacitive touch product, as shown in fig. 8-1, the device 800 may include:
the determining module 801 is configured to determine whether a deformation amount of the surface of the touch key is greater than a deformation threshold, where the deformation threshold is determined based on a current volume of the touch product.
The processing module 802 is configured to not respond to the touch operation when the deformation amount of the touch key surface is not greater than the deformation threshold, and otherwise, respond to the touch operation.
In summary, according to the touch operation determination device for a capacitive touch product provided in the embodiments of the present invention, when the surface of the touch key deforms, the determination module determines whether the deformation amount of the surface of the touch key is greater than the deformation threshold, and when the deformation amount of the surface of the touch key is not greater than the deformation threshold, the processing module does not respond to the touch operation, so as to distinguish the deformation generated by the touch operation of the user from the deformation caused by the vibration interference, thereby avoiding the response generated by the deformation generated by the vibration interference on the surface of the touch key to a certain extent, reducing the probability of response errors, and improving the anti-interference performance and accuracy of the touch response method.
Alternatively, as shown in fig. 8-2, the determining module 801 may include:
the first comparing sub-module 8011 is configured to compare the deformation amount of the touch key surface with the deformation amount of the adjacent area of the touch key.
The second comparing sub-module 8012 is configured to compare the deformation amount of the touch key surface with a deformation threshold when a difference between the deformation amount of the touch key surface and the deformation amount of the adjacent area is greater than the threshold.
Optionally, as shown in fig. 8-3, the apparatus 800 may further include:
the obtaining module 803 is configured to obtain the volume at the current time, and determine a deformation amount caused by the volume.
The first determining module 804 is configured to determine an additional deformation amount, where the additional deformation amount includes at least one of a deformation amount corresponding to an accompanying sound power, a deformation amount corresponding to a sound effect mode, and a deformation amount corresponding to a design error of a touch key.
A second determining module 805, configured to determine a deformation threshold according to the deformation amount caused by the volume and the additional deformation amount.
Optionally, the second determining module 805 may be specifically configured to:
and determining a deformation coefficient for reflecting the sensitivity of the touch key to the volume.
The product of the coefficient and the amount of deformation caused by the volume is determined.
The sum of the additional deformation quantities is determined.
Determining a sum of the product and the sum as a deformation threshold.
Optionally, the number of the adjacent regions is two, the two adjacent regions are arranged on two sides of the touch key along the designated direction, and the shape of each adjacent region is identical to that of the touch key.
Optionally, a gap distance between the adjacent area and the touch key is greater than twice a width of the touch key, and the width of the touch key is a maximum size of the touch key in the designated direction.
Optionally, the touch operation determination device for the capacitive touch product may further include a metal mesh enclosure, wherein the touch key is located on the metal mesh enclosure, and the touch key and the metal mesh enclosure are integrated.
In summary, in the touch operation determination apparatus for a capacitive touch product according to the embodiments of the present invention, when the surface of the touch key is deformed, the first comparison sub-module compares the deformation amount of the surface of the touch key with the deformation amount of the adjacent area of the touch key, and the second comparison sub-module compares whether the deformation amount of the surface of the touch key is greater than the deformation threshold when the difference between the deformation amount of the surface of the touch key and the deformation amount of the adjacent area is not greater than the deformation threshold, and when the deformation amount of the surface of the touch key is not greater than the deformation threshold, the processing module does not respond to the touch operation, so as to distinguish the deformation caused by the deformation and the vibration interference of the touch operation of the user, avoid the response to the deformation of the surface of the touch key due to the vibration interference to a certain extent, reduce the probability of occurrence of response errors, and improve the anti-interference performance and the, therefore, a user does not need to worry about whether the touch product has a response error or not when using the touch screen, the question of the user on the television quality is reduced, and the user experience is further improved.
An embodiment of the present invention provides a touch operation determining device 900 for use in a capacitive touch product, as shown in fig. 9, the device 900 may include:
the comparing module 901 is configured to compare the deformation amount of the touch key surface with the deformation amount of the adjacent area of the touch key when the touch key surface deforms.
The processing module 902 is configured to not respond to the touch operation when a difference between a deformation amount of the touch key surface and a deformation amount of an adjacent area is not greater than a threshold, and otherwise, respond to the touch operation.
In summary, according to the touch operation determination apparatus for a capacitive touch product provided in the embodiments of the present invention, when the surface of the touch key deforms, the deformation amount of the surface of the touch key is compared with the deformation amount of the adjacent region of the touch key by the comparison module, and when the difference between the deformation amount of the surface of the touch key and the deformation amount of the adjacent region is not greater than the threshold, the processing module does not respond to the touch operation, so that the deformation caused by the deformation and the vibration interference generated by the touch operation of the user can be distinguished, the deformation caused by the vibration interference on the surface of the touch key is prevented from being responded to a certain extent, the probability of occurrence of response errors is reduced, and the anti-interference performance and the accuracy of the touch response method are improved.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described apparatuses, modules and sub-modules may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A touch operation judgment method for a capacitive touch product is characterized by comprising the following steps:
acquiring the current moment volume of the touch product;
determining the deformation quantity caused by the volume at the current moment according to the corresponding relation between the pre-stored volume and the deformation quantity caused by the volume;
determining an additional deformation quantity, wherein the additional deformation quantity comprises at least one of a deformation quantity corresponding to accompanying sound power, a deformation quantity corresponding to a sound effect mode and a deformation quantity corresponding to a design error of a touch key;
determining a deformation threshold according to the deformation quantity caused by the volume at the current moment and the additional deformation quantity;
when the surface of the touch key deforms, judging whether the deformation amount of the surface of the touch key is larger than the deformation threshold value;
and when the deformation amount of the surface of the touch key is not larger than the deformation threshold, not responding to touch operation, and otherwise, responding to touch operation.
2. The method of claim 1, wherein the determining whether the deformation amount of the touch key surface is greater than the deformation threshold value comprises:
comparing the deformation quantity of the surface of the touch key with the deformation quantity of the adjacent area of the touch key;
and when the difference value between the deformation amount of the touch key surface and the deformation amount of the adjacent area is larger than a threshold value, comparing the deformation amount of the touch key surface with the deformation threshold value.
3. The method according to claim 1, wherein the determining the deformation threshold according to the deformation quantity caused by the volume at the current moment and the additional deformation quantity comprises:
determining a deformation coefficient for reflecting the sensitivity of the touch key to the volume;
determining the product of the deformation coefficient and the deformation quantity caused by the volume at the current moment;
determining a sum of the product and the additional deformation amount as the deformation threshold.
4. The method according to claim 2, wherein the number of the adjacent regions is two, the two adjacent regions are arranged on two sides of the touch key along a specified direction, and the shape of each adjacent region is identical to the shape of the touch key.
5. The method of claim 4, wherein a gap distance between the adjacent area and the touch key is greater than twice a width of the touch key, and the width of the touch key is a maximum dimension of the touch key in a specified direction.
6. A touch operation judgment device for a capacitive touch product is characterized by comprising:
the acquisition module is used for acquiring the volume at the current moment and determining the deformation quantity caused by the volume at the current moment according to the corresponding relation between the pre-stored volume and the deformation quantity caused by the volume;
the first determining module is used for determining an additional deformation quantity, wherein the additional deformation quantity comprises at least one of a deformation quantity corresponding to accompanying sound power, a deformation quantity corresponding to a sound effect mode and a deformation quantity corresponding to a design error of a touch key;
the second determining module is used for determining a deformation threshold according to the deformation quantity caused by the volume and the additional deformation quantity;
the judging module is used for judging whether the deformation amount of the surface of the touch key is larger than the deformation threshold value or not when the surface of the touch key deforms;
and the processing module is used for not responding to the touch operation when the deformation amount of the surface of the touch key is not larger than the deformation threshold value, and otherwise, responding to the touch operation.
7. The apparatus of claim 6, wherein the determining module comprises:
the first comparison submodule is used for comparing the deformation quantity of the surface of the touch key with the deformation quantity of the adjacent area of the touch key;
and the second comparison submodule is used for comparing the deformation amount of the touch key surface with the deformation threshold when the difference value between the deformation amount of the touch key surface and the deformation amount of the adjacent area is greater than the threshold.
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| CN103677452A (en) * | 2012-08-30 | 2014-03-26 | 华为终端有限公司 | Capacitive touch screen calibration method and capacitive touch device |
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| CN106301325A (en) * | 2016-08-11 | 2017-01-04 | 青岛海信电器股份有限公司 | The touch identification method of capacitance type touch key and device |
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| CN103677452A (en) * | 2012-08-30 | 2014-03-26 | 华为终端有限公司 | Capacitive touch screen calibration method and capacitive touch device |
| CN205540679U (en) * | 2016-01-27 | 2016-08-31 | 深圳纽迪瑞科技开发有限公司 | Pressure touch devices and have this pressure touch devices's terminal equipment |
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