CN114816114A - Photosensitive touch interaction method - Google Patents
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- CN114816114A CN114816114A CN202210375057.4A CN202210375057A CN114816114A CN 114816114 A CN114816114 A CN 114816114A CN 202210375057 A CN202210375057 A CN 202210375057A CN 114816114 A CN114816114 A CN 114816114A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
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Abstract
The application discloses a photosensitive touch interaction method, and belongs to the technical field of display. The photosensitive touch interaction method is applied to a display module comprising a plurality of integrated modules, each integrated module is correspondingly provided with a plurality of pixel points and a photosensitive sensor, and the photosensitive touch interaction method comprises the following steps: monitoring output signals of all the photosensitive sensors of the display module in real time; and judging whether the display module generates touch interaction currently or not and carrying out corresponding touch interaction positioning according to the output signals of the photosensitive sensors. According to the technical scheme, the technical problems that in the prior art, when screen touch is realized on a large-size display screen, an extra touch system is adopted to realize the touch function of the corresponding display screen, the system structure of the display screen is complicated, the display effect of the display screen is influenced, and the touch delay is caused are effectively solved.
Description
Technical Field
The application relates to the technical field of display, in particular to a photosensitive touch interaction method.
Background
Currently, there are three mature methods for screen touch schemes of large-size LED display screens. The first method is to install an infrared frame outside the screen, detect the infrared light reflected by the touch point by using infrared geminate transistors, and calculate the accurate coordinate of the touch point, thereby completing the touch refresh. The method has the advantages of low cost, low delay and capability of quickly and accurately determining the coordinates of the touch point. However, the disadvantage is that the infrared geminate transistors are arranged at positions which need to keep a circle of frame on the screen, and frameless display cannot be realized. The second method is that a layer of metal grid is laid on the surface of the screen, silk threads of conductive metal such as copper and the like and oxides thereof are densely distributed on a conductive layer of a PET (polyethylene terephthalate) substrate to form a grid with a regular shape, and a signal transmission function is realized by sensing touch based on the attached conductive film. Its advantages are low cost, simple process, high yield, low sheet resistance and good curling performance; the disadvantage is that moire fringes may be generated, which are difficult to completely overcome. And thirdly, arranging a camera in front of the screen, spraying a layer of protective film on the surface of the screen, shooting touch point positions through the preset camera in front of the screen, and performing image processing to realize accurate positioning of the touch points of the screen. The positioning device has the advantages of high positioning precision and good screen integration effect; the method has the disadvantages that the delay is high, the placement position of the camera is selected and the touch system is debugged according to the field situation each time.
Therefore, in the above three schemes, the detection sensor for realizing the touch function is independent from the display screen, that is, the detection sensor is independent from the display screen structure, that is, the touch function of the corresponding display screen is realized by an additional touch system independent from the display screen structure. Although the advantages of low cost, low technical implementation difficulty, easy maintenance and the like can be brought, the complexity of the structure of the display screen is inevitably increased, and meanwhile, the display effect of the display screen is influenced and the defects of touch delay exist.
Disclosure of Invention
The present application mainly aims to provide a photosensitive touch interaction method, which aims to solve the technical problems that in the prior art, when a large-sized display screen is touched, an extra touch system is adopted to realize the touch function of the corresponding display screen, so that the system structure of the display screen becomes complicated, the display effect of the display screen is affected, and the defects of touch delay and the like exist.
In order to achieve the above object, the present application provides a photosensitive touch interaction method, which is applied to a display module including a plurality of integrated modules, each integrated module is correspondingly provided with a plurality of pixels and a photosensitive sensor, and the photosensitive touch interaction method includes the following steps: monitoring output signals of all the photosensitive sensors of the display module in real time; and judging whether the display module generates touch interaction currently or not and carrying out corresponding touch interaction positioning according to the output signals of the photosensitive sensors.
Optionally, the step of monitoring the real-time output signal of each photosensitive sensor of the display module specifically includes: and detecting whether the photosensitive sensors with the sudden changes of the output signals exist at present, and acquiring the positions and the number of the photosensitive sensors with the sudden changes of the output signals when the photosensitive sensors with the sudden changes of the output signals exist at present.
Optionally, the step of detecting whether the current photosensor with an abrupt change in output signal occurs specifically includes: and if the output signal of any one of the photosensitive sensors changes, detecting the corresponding signal change value of the photosensitive sensor, and judging that the corresponding photosensitive sensor has sudden change of the output signal currently when the signal change value is greater than a first preset threshold value.
Optionally, the step of determining whether the display module performs touch interaction and performs corresponding touch interaction positioning according to the output signal of each of the light-sensitive sensors specifically includes: if the number of the photosensitive sensors with the sudden change of the output signals is not larger than a second preset threshold value, judging that the display module does not have touch interaction currently; if the number of the photosensitive sensors with the sudden change of the output signals is only one, judging that touch interaction of a point touch form currently occurs on the display module, and executing a preset point touch interaction positioning method to perform corresponding touch interaction positioning; and if the number of the photosensitive sensors with the current sudden change of the output signals is larger than one but smaller than the second preset threshold value, judging that the touch interaction of the display module in a surface touch mode occurs currently, and executing a preset surface touch interaction positioning method to perform corresponding touch interaction positioning.
Optionally, the preset point-touch interactive positioning method includes the following steps: sequentially lightening each pixel point on the integrated module where the photosensitive sensor with the abrupt change of the output signal is positioned so as to obtain a light intensity signal output by the corresponding photosensitive sensor when each pixel point is lightened; and comparing and sequencing the corresponding light intensity signals when each pixel point is lightened, and judging the coordinate of the pixel point with the strongest light intensity signal when the pixel point is lightened as the coordinate of the touch point.
Optionally, the preset point-touch interactive positioning method includes the following steps: selecting four pixel points positioned at four peripheral corners on the integrated module where the photosensitive sensor with the suddenly changed output signal is positioned; the four pixel points are lightened in a time-sharing manner, so that a light intensity signal output by the corresponding photosensitive sensor when each pixel point is lightened is obtained; and solving the point deviation according to the corresponding light intensity signals when the four pixel points are lightened in a time-sharing manner, and calculating to obtain corresponding touch point coordinates.
Optionally, the preset point-touch interactive positioning method includes the following steps: refreshing a preset pattern on the integrated module where the photosensitive sensor with the sudden change of the output signal is located, and acquiring a light intensity signal output by the corresponding photosensitive sensor when the preset pattern is refreshed; and comparing the coordinates of the pixel points corresponding to the light intensity signals in a preset database to judge the coordinates as touch point coordinates.
Optionally, the method for establishing the preset database includes the following steps: and refreshing a preset pattern on each integrated module, and recording a light intensity signal output by the corresponding photosensitive sensor when a touch point is at each pixel point when the current integrated module is refreshed so as to establish the preset database.
Optionally, the preset point-touch interactive positioning method includes the following steps: each pixel point on the integrated module where the photosensitive sensor with the abrupt change of the output signal occurs is lightened in a time-sharing mode, so that whether the light intensity signal output by the corresponding photosensitive sensor is larger than a third preset threshold value or not is judged when each pixel point is lightened; and judging the coordinates of the pixel points of which the light intensity signals output by the corresponding photosensitive sensors are greater than a preset threshold value when the pixel points are lightened as the coordinates of the touch points.
Optionally, the preset surface-touch interactive positioning method includes the following steps: and calculating to obtain the contour of the touch surface according to the position of each photosensitive sensor with the sudden change of the current output signal and the intensity of the output signal, and judging the coordinates of the touch points according to the contour of the touch surface.
The application provides a sensitization touch-control interaction method, it is applied to the display module assembly including a plurality of integrated modules, and each integrated module corresponds and is provided with a plurality of pixel and a sensitization sensor for each integrated module can be regarded as a minimum resolution unit of display module assembly, realizes following sensitization touch-control interaction process: and firstly, monitoring the output signals of all the photosensitive sensors of the display module in real time. And judging whether the display module generates touch interaction currently or not and carrying out corresponding touch interaction positioning according to the output signals of the photosensitive sensors. The working principle is that pixel points on the integrated modules emit light to serve as detection light sources, when a touch object is close to one integrated module, the pixel points of the corresponding integrated modules emit light to irradiate the surface of the touch object to form corresponding reflection light, and meanwhile, after the light sensor of the corresponding integrated module detects the reflection light through the light guide through hole, an electric signal can be generated based on the light intensity of the reflection light to determine the position of the touch object, so that real-time touch interaction of the display module is realized. Therefore, the touch interaction of the display screen module is realized through the integrated packaging structure, the display effect of the display screen cannot be influenced while the system structure of the display module is effectively simplified, and the defect of touch delay does not exist. Therefore, the technical scheme can solve the technical problems that in the prior art, when the touch of the screen is realized by aiming at the large-size display screen, an extra touch system is adopted to realize the touch function of the corresponding display screen, the system structure of the display screen is complicated, and meanwhile, the display effect of the display screen is influenced and the touch delay is caused.
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In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a flowchart of a photosensitive touch interaction method according to an embodiment of the present disclosure.
Fig. 2 is a schematic cross-sectional structural diagram of an integrated module provided in an embodiment of the present application.
Fig. 3 is a detailed flowchart of step S120 of the photosensitive touch interaction method shown in fig. 1.
Fig. 4 is a first flowchart of a preset point-touch interaction positioning method according to an embodiment of the present disclosure.
Fig. 5 is a second flowchart of a preset point-touch interaction positioning method according to an embodiment of the present disclosure.
Fig. 6 is a third flowchart of a preset point-touch interaction positioning method according to an embodiment of the present disclosure.
Fig. 7 is a fourth flowchart of a preset point-touch interactive positioning method according to an embodiment of the present application.
Detailed Description
The following further describes embodiments of the present application with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present application, but the present application is not limited thereto. In addition, the technical features mentioned in the embodiments of the present application described below may be combined with each other as long as they do not conflict with each other.
In an embodiment, as shown in fig. 1, an embodiment of the present application provides a photosensitive touch interaction method, which may specifically include the following steps:
step S110: and monitoring the output signals of all the photosensitive sensors of the display module in real time.
Specifically, the photosensitive touch interaction method of the embodiment of the application is mainly applied to a display module including a plurality of integrated modules 100 as shown in fig. 2, the integrated modules 100 may be fixed on a module PCB of the display module in a matrix distribution, each integrated module 100 is correspondingly provided with a plurality of pixels 110 and a photosensitive sensor 120, and meanwhile, in the packaging structure of the integrated module 100, the photosensitive sensor 120 and the pixels 110 are not on one layer, but on the front surface and the back surface of the integrated substrate 130, so that the normal packaging of the pixels 110 is not affected by the volume problem of the photosensitive sensor 120. The plurality of pixels 110 may be distributed on the front surface of the integrated substrate 130 in a matrix for forming a display surface of a display module in the following, and the light sensor 120 may be fixed on the back surface of the integrated substrate 130 and located at the center of the back surface, so that the light sensor 120 may detect the light intensity at the front surface of the integrated substrate 130, the center of the integrated substrate 130 is further provided with a light guide through hole 131, and the light sensing surface of the light sensor 120 faces the light guide through hole 131. In order to make the light on the front surface of the integrated substrate 130 uniformly guided to the photosensitive surface of the photosensor 120, some light guide structures, such as light guide posts, may be disposed in the light guide through holes 131.
At this moment, when carrying out sensitization touch-control interaction to foretell display module assembly, need carry out real-time output signal monitoring to each sensitization sensor of display module assembly earlier, its specific process as follows: and detecting whether the photosensitive sensors with the sudden changes of the output signals exist at present, and acquiring the positions and the number of the photosensitive sensors with the sudden changes of the output signals when the photosensitive sensors with the sudden changes of the output signals exist at present.
Generally speaking, under the condition that there is no obvious sudden change of external ambient light, the output of the light sensor 120 fluctuates in a limited frequency band, because the signals received by the light sensor 120 are mostly weak signal streams, including light leakage inside the integrated module 100, external ambient light, and light reflection of an object at a certain distance in front of the screen, such light is characterized by diffuse reflection, the disorder of light is strong, only a small number of light sources will enter the light sensor, and cause the signal output of the light sensor 120, and further the fluctuation caused by such light will fall into a stable frequency band for a long time, that is, the output signal of the light sensor 120 will be stably transformed in this frequency band, which is bottom noise. For the display module of the present application, it is required to rely on the signal variation characteristics of each photosensor 120 to distinguish the touch signal from the interference signal. For the touch signal, the characteristic of the change brought by the touch signal is significantly different from other factors, which may be embodied in that the dynamic change amplitude of the touch signal is more abrupt compared to other changes, that is, the light sensor 120 has a point with an abrupt change in the time length, after which the output signal (specifically, the voltage value that can be output) of the light sensor 120 is significantly increased, which means that the touch signal appears, or is significantly decreased, which means that the touch signal disappears. Based on the characteristic, the display module can judge that the change condition comes from the touch signal.
For this reason, a specific process of detecting whether the light sensor having the abrupt change of the output signal is currently present may be as follows: and if the output signal of any photosensitive sensor changes, detecting the signal change value of the corresponding photosensitive sensor, and judging that the corresponding photosensitive sensor has sudden change of the output signal currently when the signal change value is greater than a first preset threshold value. Taking the output signal of the photo sensor 120 as the voltage value as an example, if the voltage value output by the photo sensor 120 suddenly increases and the increased amplitude is greater than the first preset threshold (the first preset threshold can be reasonably adjusted and set according to the actual detection precision), it can be determined that the corresponding photo sensor 120 has a sudden change of the output signal, and the number, the position, and the corresponding output signal value of the photo sensor 120 determined as the sudden change of the output signal can be used as the basis for subsequently determining whether the display module has touch interaction and performs corresponding touch interaction positioning currently.
Step S120: and judging whether the display module generates touch interaction currently or not and carrying out corresponding touch interaction positioning according to the output signals of the photosensitive sensors.
Specifically, in general, the output signal of the photosensor 120 may be suddenly changed due to direct light, in addition to the touch signal, in which case the direct light is usually caused by irradiating a lamp, direct sunlight, or the like on the screen, and there is no large change within several frames, so that it is possible to distinguish whether such sudden change occurs on multiple integrated modules. At this time, as shown in fig. 3, the process of executing the steps of "determining whether touch interaction occurs and performing corresponding touch interaction positioning on the display module according to the output signal of each photosensor" in the method is specifically as follows:
step S121: if the number of the photosensitive sensors with the sudden change of the output signals is not larger than a second preset threshold value, it is judged that the touch interaction does not occur in the display module currently.
Step S122: and if the number of the photosensitive sensors with the sudden change of the output signals is only one, judging that the touch interaction of the point touch form currently occurs in the display module, and executing a preset point touch interaction positioning method to perform corresponding touch interaction positioning.
Step S123: and if the number of the photosensitive sensors with the current sudden change of the output signals is larger than one but smaller than a second preset threshold value, judging that the touch interaction of the display module in a surface touch mode occurs currently, and executing a preset surface touch interaction positioning method to perform corresponding touch interaction positioning.
In the above method steps, it is also determined that the display module does not have touch interaction at present when the number of the photosensors with abrupt change of the output signals is greater than the second preset threshold, which is mainly used to eliminate the abrupt change of the output signals of the photosensors 120 caused by direct light, and the direct light is usually caused when the light is emitted from a lamp, direct sunlight, etc. and is generally caused when the light is emitted from a large area on the screen, so that the abrupt change of the output signals of the photosensors 120 is caused, and therefore, it is determined whether the abrupt change of the output signals of the photosensors 120 caused by direct light is caused by detecting whether the number of the photosensors with abrupt change of the output signals is greater than the second preset threshold (the second preset threshold can be reasonably adjusted and set according to actual detection accuracy).
In addition, the touch interaction mode can be quite abundant. Specifically, the touch pen with the reflecting surface can be used for clicking the screen to generate reflection at the clicking position, so that touch positioning is realized. The touch control positioning device can also be directly slid by fingers, and light reflects when the fingers are hit by the light, so that touch control positioning is realized. When the touch screen faces far touch, the light of the irradiated area can be sharply enhanced through laser irradiation, and therefore touch positioning is achieved. The touch interaction modes are divided according to the number of the photosensitive sensors affected by the touch interaction modes, and can be roughly divided into two touch interaction types, one is a touch interaction type in a point touch form, for example, the touch form of clicking a screen by the stylus and irradiating by laser is a touch form, the contact area of the touch interaction mode is small, and only the output signal of one sense sensor 120 is affected, so that when the number of the photosensitive sensors, which detect that the sudden change of the output signal currently occurs, is only one, the touch interaction in the point touch form currently occurs on the display module is judged, and meanwhile, the contact area of the touch interaction mode is small, and the possible contact position is only one pixel point 110 of the integrated module 100, so that the touch interaction mode needs to be further accurately positioned, namely, a preset point touch interaction positioning method is executed to perform corresponding touch interaction positioning. The other type is a surface touch type touch interaction type, such as the above-mentioned finger sliding touch type, which has a large contact area and affects the output signals of more than one sense sensor 120, but is different from the direct light, so that when the number of the photosensors detecting the sudden change of the output signal is greater than one but less than a second preset threshold, it can be determined that the surface touch type touch interaction currently occurs in the display module, and meanwhile, the contact area is large, touch location is usually performed across multiple integrated modules 100, meaning that the touch location in a single integrated module 100 has no meaning to the display module, and the touch surface profile is calculated only according to the positions and the output signal intensities of the photosensors 120 currently having sudden change of the output signal (the corresponding touch surface profile can be obtained by matching with a sawtooth-removing algorithm), the coordinates of the touch points can be judged according to the contour of the touch surface, and smooth surface touch type touch interaction is realized. Therefore, when the touch interaction of the display module in the surface touch form is judged to be currently generated, a preset surface touch interaction positioning method is executed (the specific process is that the outline of the touch surface is obtained by calculation according to the position of each photosensitive sensor with the sudden change of the output signal and the intensity of the output signal, and the coordinates of the touch point are judged according to the outline of the touch surface) so as to carry out corresponding touch interaction positioning.
The photosensitive touch interaction method provided by the embodiment of the application is applied to a display module comprising a plurality of integrated modules, and each integrated module is correspondingly provided with a plurality of pixel points and a photosensitive sensor, so that each integrated module can be used as a minimum resolution unit of the display module, and the following photosensitive touch interaction process is realized: and firstly, monitoring the output signals of all the photosensitive sensors of the display module in real time. And judging whether the display module generates touch interaction currently or not and carrying out corresponding touch interaction positioning according to the output signals of all the photosensitive sensors. The working principle is that pixel points on the integrated modules emit light to serve as detection light sources, when a touch object is close to one integrated module, the pixel points of the corresponding integrated modules emit light to irradiate the surface of the touch object to form corresponding reflection light, and meanwhile, after the light sensor of the corresponding integrated module detects the reflection light through the light guide through hole, an electric signal can be generated based on the light intensity of the reflection light to determine the position of the touch object, so that real-time touch interaction of the display module is realized. Therefore, the touch interaction of the display screen module is realized through the integrated packaging structure, the display effect of the display screen cannot be influenced while the system structure of the display module is effectively simplified, and the defect of touch delay does not exist.
In some examples, as shown in fig. 4, the preset point-touch interactive positioning method mentioned above may specifically include the following steps:
step S11: and sequentially lightening each pixel point on the integrated module where the photosensitive sensor with the sudden change of the output signal is positioned so as to obtain a light intensity signal output by the corresponding photosensitive sensor when each pixel point is lightened.
Specifically, when the touch profile of the point touch is moved to the integrated module 100, the main task of the point touch interaction positioning is to determine which pixel point 110 on the integrated module 100 is closer to the profile, so as to determine the coordinate of the pixel point 110 as the touch point coordinate. At this time, each pixel 110 on the integrated module 100 where the photosensor 120 with a sudden change in output signal occurs may be sequentially turned on to obtain the light intensity signal output by the corresponding photosensor 120 when each pixel 110 is turned on, that is, the light intensity signal output by the corresponding photosensor 120 is recorded once when each pixel 110 on the integrated module 100 is independently turned on.
Step S12: and comparing and sequencing the corresponding light intensity signals when each pixel point is lightened, and judging the coordinate of the pixel point with the strongest light intensity signal when the pixel point is lightened as the coordinate of the touch point.
Specifically, after the step "when each pixel point 110 is independently lighted is recorded and the light intensity signal output by the corresponding light sensor 120" is recorded, the corresponding light intensity signal when each pixel point is lighted can be compared and sorted, and the coordinate of the pixel point with the strongest light intensity signal when the pixel point is lighted is determined as the coordinate of the touch point, because the touched touch contour is closest to which pixel point 110, and the light intensity signal output by the corresponding light sensor 120 is strongest when the pixel point is independently lighted.
In some examples, as shown in fig. 5, the aforementioned predetermined point-touch interactive positioning method may further include the following steps:
step S21: and selecting four pixel points positioned at four peripheral corners on the integrated module where the photosensitive sensor with the suddenly changed output signal is positioned.
Specifically, when the touch profile of the point touch is moved to the integrated module 100, the main task of the point touch interaction positioning is to determine which pixel point 110 on the integrated module 100 is closer to the profile, so as to determine the coordinate of the pixel point 110 as the touch point coordinate. At this time, taking the number of the pixel points 110 on the integrated module 100 as 16 as an example, the integrated module can form a 4X4 matrix distribution, and when the point contacts are positioned in an interactive manner, four pixel points located at four peripheral corners on the integrated module 100 where the photosensor 120 with an abrupt change in output signal is located are selected, that is, four pixel points located at the upper left corner, the upper right corner, the lower left corner and the lower right corner on the 4X4 matrix distribution are selected.
Step S22: and (4) lightening the four pixel points in a time-sharing manner so as to obtain a light intensity signal output by the corresponding photosensitive sensor when each pixel point is lightened.
Specifically, after four pixel points of the upper left corner, the upper right corner, the lower left corner and the lower right corner in the 4X4 matrix distribution are selected through the steps of the method, the four pixel points can be lighted in a time division manner, so that the light intensity signal output by the corresponding photosensitive sensor when each pixel point is lighted is obtained. That is, when the upper-left pixel 110, the upper-right pixel 110, the lower-left pixel 110 and the lower-right pixel 110 on the integrated module 100 are independently turned on, the light intensity signals output by the corresponding photosensors 120 are respectively recorded once, so as to obtain four light intensity signals corresponding to the four pixels when the four pixels are respectively turned on.
Step S23: and solving the point deviation according to the corresponding light intensity signals when the four pixel points are lightened in a time-sharing manner, and calculating to obtain the corresponding touch point coordinates.
Specifically, after the four light intensity signals corresponding to the four pixel points respectively lighted are obtained through the steps of the method, the point deviation solution can be carried out according to the light intensity signals corresponding to the four pixel points lighted in a time-sharing mode, and the corresponding touch point coordinates are obtained through calculation. Specifically, the difference between the first light intensity signal and the fourth light intensity signal, and the difference between the second light intensity signal and the third light intensity signal are respectively obtained, and then the distance relationship between the real touch point and the four pixel points is determined according to the two differences (the determination is based on which pixel point 110 the real touch point is closer to, and when the real touch point is independently lighted, the light intensity signal output by the corresponding light sensor 120 is stronger), so as to calculate the corresponding touch point coordinate.
In some examples, as shown in fig. 6, the aforementioned predetermined point-touch interactive positioning method may further include the following steps:
step S31: and refreshing the preset pattern on the integrated module where the photosensitive sensor with the sudden change of the output signal is positioned, and acquiring a light intensity signal output by the corresponding photosensitive sensor when the preset pattern is refreshed.
Specifically, when the touch profile of the point touch is moved to the integrated module 100, the main task of the point touch interaction positioning is to determine which pixel point 110 on the integrated module 100 is closer to the profile, so as to determine the coordinate of the pixel point 110 as the touch point coordinate. At this time, we can first establish a preset database, and the establishment process is as follows: refreshing operation of a preset pattern is performed on each integrated module 100, and when the current integrated module 100 performs refreshing operation, a light intensity signal output by a corresponding photosensitive sensor when a touch point is at each pixel point is recorded, so as to establish a preset database. That is, when the plurality of pixels 110 of the integration module 100 display a predetermined pattern, each pixel 110 is touched in sequence, and the light intensity signal output by the corresponding photosensor is recorded, so as to form a one-to-one correspondence relationship between the pixels 110 (which can be specifically represented by coordinates of the corresponding pixels 110) and the light intensity signal (which is specifically a magnitude value of the light intensity signal) in the predetermined database. Therefore, when the preset point-contact interaction positioning method is executed, the refreshing operation of the preset pattern can be carried out on the integrated module where the photosensitive sensor with the sudden change of the output signal is located, and the light intensity signal output by the corresponding photosensitive sensor when the preset pattern is refreshed is obtained. The preset pattern is the same pattern as the preset pattern for establishing the preset database.
Step S32: and comparing the coordinates of the pixel points corresponding to the light intensity signals in a preset database to judge the coordinates as the coordinates of the touch points.
Specifically, based on the above expression, after the light intensity signal output by the corresponding photosensitive sensor is obtained by the above steps when the preset pattern is refreshed, the coordinates of the pixel point corresponding to the light intensity signal can be obtained by comparison in the preset database, so as to determine the coordinates of the touch point.
In some examples, as shown in fig. 7, the aforementioned predetermined point-touch interactive positioning method may further include the following steps:
step S41: and lightening each pixel point on the integrated module where the photosensitive sensor with the sudden change of the output signal occurs in a time-sharing manner so as to judge whether the light intensity signal output by the corresponding photosensitive sensor is greater than a third preset threshold value or not when each pixel point is lightened.
Specifically, when the touch profile of the point touch is moved to the integrated module 100, the main task of the point touch interaction positioning is to determine which pixel point 110 on the integrated module 100 is closer to the profile, so as to determine the coordinate of the pixel point 110 as the touch point coordinate. At this time, a third preset threshold may be set, and when a certain pixel 110 is independently lighted, and the light intensity signal of the corresponding photosensor 120 or exceeds the third preset threshold, it is determined that there is a touch signal, and the coordinate of the pixel 110 is the touch point coordinate. Therefore, the third preset threshold is set according to the magnitude of the light intensity signal output by the corresponding photosensitive sensor when the pixel point where the touch point is located is independently lighted. Therefore, when the preset point-touch interactive positioning method is executed, each pixel point on the integrated module where the photosensitive sensor with the sudden change of the output signal is located can be lightened in a time-sharing manner, so that whether the light intensity signal output by the corresponding photosensitive sensor is greater than a third preset threshold value or not when each pixel point is lightened is judged
Step S42: and judging the coordinates of the pixel points of which the light intensity signals output by the corresponding photosensitive sensors are greater than a third preset threshold value when the pixel points are lightened as the coordinates of the touch points.
Specifically, based on the above description, when a certain pixel 110 is independently turned on, and the light intensity signal of the corresponding light sensor 120 exceeds the third preset threshold, it is determined that there is a touch signal, and the coordinate of the pixel 110 is the touch point coordinate. Therefore, the coordinates of the pixel 110, which have the light intensity signal output by the corresponding light sensor greater than the third preset threshold when the pixel 110 is turned on, can be determined as the coordinates of the touch point.
In the preset point-touch interactive positioning method in the above example, further accurate positioning in the integrated module 110 can be achieved to perform corresponding touch interactive positioning, and those skilled in the art can select one point-touch interactive positioning for the display module in the embodiment of the present application to use.
The embodiments of the present application have been described in detail with reference to the accompanying drawings, but the present application is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made herein without departing from the principles and spirit of the application, and the scope of the application is to be accorded the full scope of the claims.
Claims (10)
1. A photosensitive touch interaction method is applied to a display module comprising a plurality of integrated modules, each integrated module is correspondingly provided with a plurality of pixel points and a photosensitive sensor, and the photosensitive touch interaction method comprises the following steps:
monitoring output signals of all the photosensitive sensors of the display module in real time;
and judging whether the display module generates touch interaction currently or not and carrying out corresponding touch interaction positioning according to the output signals of the photosensitive sensors.
2. The light-sensitive touch interaction method according to claim 1, wherein the step of monitoring the output signals of the light-sensitive sensors of the display module in real time specifically comprises:
and detecting whether the photosensitive sensors with the sudden changes of the output signals exist at present, and acquiring the positions and the number of the photosensitive sensors with the sudden changes of the output signals when the photosensitive sensors with the sudden changes of the output signals exist at present.
3. The light-sensitive touch interaction method according to claim 2, wherein the step of detecting whether the light-sensitive sensor with the suddenly changed output signal is present specifically comprises:
if the output signal of any one of the photosensitive sensors changes, detecting the corresponding signal change value of the photosensitive sensor, and judging that the corresponding photosensitive sensor has sudden change of the output signal when the signal change value is greater than a first preset threshold value.
4. The light-sensitive touch interaction method according to claim 2, wherein the step of determining whether the display module performs touch interaction and corresponding touch interaction positioning according to the output signal of each light-sensitive sensor specifically comprises:
if the number of the photosensitive sensors with the sudden change of the output signals is not larger than a second preset threshold value, judging that the display module does not have touch interaction currently;
if the number of the photosensitive sensors with the sudden change of the output signals is only one, judging that touch interaction of a point touch form currently occurs on the display module, and executing a preset point touch interaction positioning method to perform corresponding touch interaction positioning;
and if the number of the photosensitive sensors with the current sudden change of the output signals is larger than one but smaller than the second preset threshold value, judging that the touch interaction of the display module in a surface touch mode occurs currently, and executing a preset surface touch interaction positioning method to perform corresponding touch interaction positioning.
5. The light-sensitive touch interaction method according to claim 4, wherein the preset point-touch interaction positioning method comprises the following steps:
sequentially lightening each pixel point on the integrated module where the photosensitive sensor with the sudden change of the output signal is located to obtain a light intensity signal output by the corresponding photosensitive sensor when each pixel point is lightened;
and comparing and sequencing the corresponding light intensity signals when each pixel point is lightened, and judging the coordinate of the pixel point with the strongest light intensity signal when the pixel point is lightened as the coordinate of the touch point.
6. The light-sensitive touch interaction method according to claim 4, wherein the preset point-touch interaction positioning method comprises the following steps:
selecting four pixel points positioned at four peripheral corners on the integrated module where the photosensitive sensor with the suddenly changed output signal is positioned;
the four pixel points are lightened in a time-sharing manner, so that a light intensity signal output by the corresponding photosensitive sensor when each pixel point is lightened is obtained;
and solving the point deviation according to the corresponding light intensity signals when the four pixel points are lightened in a time-sharing manner, and calculating to obtain corresponding touch point coordinates.
7. The light-sensitive touch interaction method according to claim 4, wherein the preset point-touch interaction positioning method comprises the following steps:
refreshing a preset pattern on the integrated module where the photosensitive sensor with the sudden change of the output signal is located, and acquiring a light intensity signal output by the corresponding photosensitive sensor when the preset pattern is refreshed;
and comparing the coordinates of the pixel points corresponding to the light intensity signals in a preset database to judge the coordinates as touch point coordinates.
8. The light-sensitive touch interaction method according to claim 7, wherein the method for establishing the preset database comprises the following steps:
and refreshing a preset pattern on each integrated module, and recording a light intensity signal output by the corresponding photosensitive sensor when a touch point is at each pixel point when the current integrated module is refreshed so as to establish the preset database.
9. The light-sensitive touch interaction method according to claim 4, wherein the preset point-touch interaction positioning method comprises the following steps:
each pixel point on the integrated module where the photosensitive sensor with the sudden change of the output signal occurs is lightened in a time-sharing manner, so that whether the light intensity signal output by the corresponding photosensitive sensor is greater than a third preset threshold value or not is judged when each pixel point is lightened;
and judging the coordinates of the pixel points of which the light intensity signals output by the corresponding photosensitive sensors are greater than a preset threshold value when the pixel points are lightened as the coordinates of the touch points.
10. The light-sensitive touch interaction method according to claim 4, wherein the preset surface-sensitive interaction positioning method comprises the following steps:
and calculating to obtain the contour of the touch surface according to the position of each photosensitive sensor with the sudden change of the current output signal and the intensity of the output signal, and judging the coordinates of the touch points according to the contour of the touch surface.
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| CN202210375057.4A CN114816114A (en) | 2022-04-11 | 2022-04-11 | Photosensitive touch interaction method |
| PCT/CN2023/078359 WO2023197760A1 (en) | 2022-04-11 | 2023-02-27 | Integrated module, display module, and photosensitive touch-control interaction system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023197760A1 (en) * | 2022-04-11 | 2023-10-19 | 深圳市洲明科技股份有限公司 | Integrated module, display module, and photosensitive touch-control interaction system and method |
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| WO2023197760A1 (en) * | 2022-04-11 | 2023-10-19 | 深圳市洲明科技股份有限公司 | Integrated module, display module, and photosensitive touch-control interaction system and method |
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