CN117539360A - Photosensitive identification circuit, photosensitive positioning method and display device - Google Patents
Photosensitive identification circuit, photosensitive positioning method and display device Download PDFInfo
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- CN117539360A CN117539360A CN202210920366.5A CN202210920366A CN117539360A CN 117539360 A CN117539360 A CN 117539360A CN 202210920366 A CN202210920366 A CN 202210920366A CN 117539360 A CN117539360 A CN 117539360A
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000003993 interaction Effects 0.000 claims abstract description 88
- 230000002452 interceptive effect Effects 0.000 claims description 111
- 238000005286 illumination Methods 0.000 claims description 13
- 238000010586 diagram Methods 0.000 description 6
- 239000011159 matrix material Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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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
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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
Abstract
The embodiment of the application discloses a photosensitive identification circuit, a photosensitive positioning method and a display device. The method comprises the steps of obtaining a plurality of photosensitive signal intensities detected by a plurality of photosensitive units corresponding to the photosensitive identification circuit; determining a target photosensitive unit from the plurality of photosensitive units according to the plurality of photosensitive signal intensities; and determining the coordinates of the target photosensitive unit on the display screen, and determining a first interaction control device according to the coordinates. The time delay of human-computer interaction of the user through the display screen is reduced.
Description
Technical Field
The application relates to the technical field of photosensitive positioning, in particular to a photosensitive identification circuit, a photosensitive positioning method and a display device.
Background
When a user performs man-machine interaction through a display device (such as an intelligent television, a notebook computer and the like), a photosensitive positioning technology is particularly important, and particularly when the user uses a liquid crystal screen to perform man-machine interaction games, accurate and rapid positioning is required.
Conventional display devices typically rely on a separate FPGA chip in achieving the photo-alignment. When the FPGA chip uniformly acquires light spots on a display screen of the display device, each photosensitive identification circuit acquires photosensitive signals, gathers and analyzes the photosensitive signals, calculates coordinate information of the light spots, and transmits the calculated coordinate information to the main control chip. And the system chip executes corresponding interaction actions according to the coordinate information. In the process of uniformly acquiring the photosensitive signals and calculating the coordinate information by the FPGA chip, the photosensitive signals are acquired through an I2C interface and the like, so that the transmission time is required, and in the process of uniformly calculating the coordinate information of the light spots by the FPGA chip according to the photosensitive signals, a large amount of calculation time is also required, so that the time delay exists when the system chip executes the interaction action.
Disclosure of Invention
The embodiment of the application provides a photosensitive identification circuit, a photosensitive positioning method and a display device, which can reduce the time delay when a user performs man-machine interaction through a display screen.
In a first aspect, an embodiment of the present application provides a photosensitive identification circuit, including a processing unit, where the processing unit is configured to:
acquiring a plurality of photosensitive signal intensities detected by a plurality of photosensitive units corresponding to the photosensitive identification circuit;
determining a target photosensitive unit from the plurality of photosensitive units according to the plurality of photosensitive signal intensities;
and determining the coordinates of the target photosensitive unit on the display screen, and determining a first interaction control position according to the coordinates.
In a second aspect, embodiments of the present application provide a display device including a photosensitive identification circuit as claimed in any one of claims 1 to 7; the display device also comprises a main processing chip, wherein the main processing chip is connected with the photosensitive identification circuit;
the main processing chip is used for: and receiving the interactive control position sent by the photosensitive identification circuit, and executing interactive control operation based on the interactive control position.
In a third aspect, an embodiment of the present application provides a photosensitive positioning method, applied to a photosensitive identification circuit, where the method includes:
acquiring a plurality of photosensitive signal intensities detected by a plurality of photosensitive units corresponding to the photosensitive identification circuit;
determining a target photosensitive unit from the plurality of photosensitive units according to the plurality of photosensitive signal intensities;
and determining the coordinates of the target photosensitive unit on the display screen, and determining a first interaction control position according to the coordinates.
According to the technical scheme, after the photosensitive recognition circuit obtains the multi-photosensitive signal intensity of the corresponding photosensitive unit, the target photosensitive unit is determined according to the multi-photosensitive signal intensity, and then the first interactive control position is determined according to the coordinates of the target photosensitive unit on the display screen, so that the interactive control position of the control operation on the display screen can be determined through the photosensitive recognition circuit without being determined through an external chip, the photosensitive recognition circuit is prevented from sending the photosensitive signal to the external chip, the process of determining the interactive control position of the control operation through the external chip is avoided, the time consumed by the external chip for uniformly calculating the interactive control position of the control operation according to the photosensitive signal is saved, the speed for determining the first interactive control position is improved, and the time delay of the system chip for executing the interactive control operation according to the first interactive control position is further reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a photosensitive positioning method provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of a display device according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a preset distance provided in an embodiment of the present application;
FIG. 4 is a schematic block diagram of a photosensitive identification circuit according to an embodiment of the present disclosure;
FIG. 5 is a schematic diagram of a spot provided in an embodiment of the present application;
FIG. 6 is a schematic diagram of parallel connection of photosensitive identification circuits provided in an embodiment of the present application;
fig. 7 is a schematic layout diagram of a semiconductor light emitting diode and a photosensitive unit according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
The embodiment of the application provides a photosensitive identification circuit, a photosensitive positioning method and a display device. The display device includes, but is not limited to, a computer, a notebook, a tablet, a smart phone, and a television, and the display screen of the display device may be a liquid crystal display screen.
The following will describe in detail. The following description of the embodiments is not intended to limit the preferred embodiments.
The present embodiment describes the angle of a photosensitive recognition circuit, which may be integrated in a display device in particular.
As shown in fig. 1, a specific flow of the photosensitive positioning method provided in the embodiment of the present application may be as follows:
101. and acquiring a plurality of photosensitive signal intensities detected by a plurality of photosensitive units corresponding to the photosensitive identification circuit.
Referring to fig. 2, the display device 10 in fig. 2 includes a photosensitive unit 11, a photosensitive recognition circuit 12, a main processing chip 13, a photosensitive passage 14, and a display screen 15 arranged in an array. The main processing chip 13 starts the photosensitive identification circuit 12, and when the photosensitive identification circuit 12 scans the photosensitive unit 11, the current detected by the photosensitive channel 14 is obtained, and the current intensity is determined as the photosensitive signal intensity of the photosensitive unit 11.
Illustratively, in the display device 10 of the present application, one or more of the photosensitive identification circuits 12 may be provided, wherein the number of the photosensitive identification circuits 12 may be determined according to the number of the photosensitive cells 11. For example, if 200 photosensitive cells 11 exist in the display screen 15, the 200 photosensitive cells 11 are uniformly distributed in the display screen 15 according to a matrix arrangement manner (e.g., 20×10), and the 200 photosensitive cells 11 are divided into 4 areas (a area, B area, C area, D area), and each area is formed by a matrix arrangement manner of 5×10. 4 photosensitive identification circuits 12 may be respectively provided, and each area corresponding to the plurality of photosensitive cells 11 is determined for each area to be identified by each photosensitive identification circuit 12. For example, the photosensitive cell 11 in the a region is recognized by the photosensitive recognition circuit a, the photosensitive cell 11 in the B region is recognized by the photosensitive recognition circuit B, the photosensitive cell 11 in the C region is recognized by the photosensitive recognition circuit C, and the photosensitive cell 11 in the D region is recognized by the photosensitive recognition circuit D. After the display device 10 starts the photosensitive identification circuit 12, the photosensitive identification circuit 12 acquires a plurality of photosensitive signal intensities of a corresponding plurality of photosensitive units 11. If there are 30 photosensitive cells 11 in the display device 10, 1 or 2 photosensitive recognition circuits 12 may be provided in the display device 10 to acquire the signal intensity of the photosensitive cells 11. It is understood that the matrix arrangement is one of the arrangements of the photosensitive cells 11, and the arrangement of the photosensitive cells 11 is not limited in this application.
It will be appreciated that the display screen 15 of the display device 10 of the present application has the function of displaying characters, images and graphics, and at the same time, can detect an external light source, and perform corresponding interactive control operations according to the position of the external light source in the display screen 15. For example, the display screen 15 is exemplified by an LED display screen, an image can be displayed by a display manner of a semiconductor light emitting diode 16 in the LED display screen, and when a laser pen is irradiated on the LED display screen, an interactive control position is determined by a light sensing unit 11 in the LED display screen, and an interactive control operation is performed. The arrangement of the photosensitive unit 11 and the semiconductor light emitting diode 16 can be as shown in fig. 7.
102. And determining a target photosensitive unit from the photosensitive units according to the photosensitive signal intensities.
The target photosensitive unit is a photosensitive unit where a control center of a control operation in the display screen 15 is located. The control operation in the present application includes an illumination control operation using infrared rays or the like, and a touch control operation of directly clicking the display screen 15 or the like by hand.
In this embodiment, the target photosensitive cell may be determined from among the plurality of photosensitive cells 11 according to various manners.
For example, after scanning to obtain the photosensitive signal intensities of the plurality of photosensitive units 11, the photosensitive recognition circuit 12 determines that the photosensitive unit 11 with the signal intensity greater than the preset threshold is a candidate photosensitive unit, determines a signal intensity extremum in the candidate photosensitive unit, determines whether the photosensitive unit 11 corresponding to the signal intensity extremum is a photosensitive unit 11 in an adjacent row or an adjacent column if the plurality of signal intensity extremum exists, determines that two target photosensitive units currently exist if the two photosensitive units do not exist, and determines that the photosensitive unit 11 corresponding to the maximum value or the minimum value of the photosensitive signal intensity is a target photosensitive unit if the two photosensitive units currently exist.
The photosensitive unit 11 generates a corresponding photosensitive signal according to the received illumination intensity, and the stronger the illumination intensity is, the larger the photosensitive signal intensity is. For example, when a light source (for example, infrared rays) irradiates a certain area on the display screen 15, a spot is formed in the area, and the signal intensity value generated by the photosensitive unit 11 at the position where the light is strongest in the spot is maximum, whereby the position of the illumination type control operation in the display screen 15 can be determined from the signal intensity maximum value of the photosensitive unit 11. Similarly, when a touch operation is received on the display screen 15, for example, when the user clicks the display screen 15 by hand, the clicked position on the display screen 15 is blocked by the user by hand, the illumination at the position is minimum, and the signal intensity generated by the photosensitive unit 11 is minimum, so that the position of the touch control operation on the display screen 15 can be determined by the minimum value of the photosensitive signal. That is, the position of the control operation in the display screen 15 may be determined from the signal intensity extremum (signal intensity maximum value and signal intensity minimum value) in the present application.
It is determined whether or not the photosensitive cells 11 of the adjacent row or the adjacent column are the photosensitive cells 11 corresponding to the photosensitive signal intensity extremum among the candidate photosensitive cells, but one way is given in the present embodiment, which can determine the range of finding the photosensitive signal intensity extremum according to the control area and the arrangement distance between the photosensitive cells 11. For example, when the control operation is performed in the display screen 15 in which the control area is large or the arrangement distance of the photosensitive units 11 is small, if there are photosensitive signals acquired by three or more consecutive photosensitive units 11 as the photosensitive signals of the same control operation, the photosensitive unit 11 corresponding to the extreme value of the intensity of the photosensitive signal is determined as the target photosensitive unit among the three photosensitive units 11. It will be appreciated that the preset threshold may be obtained by a worker through experimentation in the practice of the present application, and the present embodiment is not limited thereto.
Illustratively, when the display screen 15 is currently up to a control area, the photosensitive unit 11 corresponding to the extreme value of the photosensitive signal intensity is determined as the target photosensitive unit.
103. And determining the coordinates of the target photosensitive unit on the display screen, and determining a first interaction control position according to the coordinates.
In this embodiment, the coordinates of the target photosensitive cells on the display screen 15 may be determined in a determinant of the target photosensitive cells in their corresponding matrix.
Illustratively, the four photosensitive-recognition circuits 12 in fig. 2 are referred to as a photosensitive-recognition circuit a, a photosensitive-recognition circuit B, a photosensitive-recognition circuit C, and a photosensitive-recognition circuit D, respectively, from left to right. The photosensitive identification circuit A scans the photosensitive units 11 in the 1 st to 5 th columns to acquire the photosensitive signal intensity of the photosensitive units 11; the photosensitive identification circuit B scans the photosensitive units 11 in the 6 th to 10 th columns to acquire the photosensitive signal intensity of the photosensitive units 11; the photosensitive identification circuit C scans the photosensitive units 11 in the 11 th to 15 th columns to acquire the photosensitive signal intensity of the photosensitive units 11; the photosensitive recognition circuit D scans the photosensitive cells 11 of the 16 th to 20 th columns to acquire the photosensitive signal intensity of the photosensitive cells 11.
After the photosensitive identification circuit a determines that the target photosensitive unit is the third photosensitive unit 11 in the second row, the coordinate of the target photosensitive unit is determined to be a23, and the first interaction control position is further determined according to the coordinate a 23.
Alternatively, in this embodiment, it is also possible to establish a coordinate system for the origin of coordinates at the center point of the display screen 15, determine each coordinate in the coordinate system where each photosensitive unit 11 is located, and store the coordinate and the rank number of its corresponding photosensitive unit 11 in the photosensitive identification circuit 12 correspondingly. Thus, after the line number of the target photosensitive cell is determined by the photosensitive identification circuit 12, the coordinates thereof on the display screen 15 can be obtained.
In this embodiment, when the obtained target photosensitive unit is one, the coordinates of the target photosensitive unit are directly determined to be the first interactive control position.
By the photosensitive positioning method in this embodiment, after the photosensitive recognition circuit 12 obtains the multiple photosensitive signal intensities of the corresponding photosensitive units 11, the target photosensitive unit is determined according to the multiple photosensitive signal intensities, and then the first interactive control position is determined by the coordinates of the target photosensitive unit on the display screen 15, so that the interactive control position of the control operation on the display screen 15 can be determined by the photosensitive recognition circuit 12 without being determined by an external chip, the process that the photosensitive recognition circuit 12 sends the photosensitive signal to the external chip and determines the interactive control position of the control operation by the external chip is reduced, the time consumed by the external chip for uniformly calculating the interactive control position of the control operation according to the photosensitive signal is saved, the efficiency of determining the first interactive control position is improved, and the time delay of the system chip for executing the interactive control operation according to the first interactive control position is further reduced.
The method described in the previous examples is further described below.
In the following embodiment, determining a target photosensitive unit from among the plurality of photosensitive units 11 based on the plurality of photosensitive signal intensities, includes:
and determining a signal intensity extremum in the plurality of photosensitive signal intensities, and determining a photosensitive unit 11 corresponding to the signal intensity extremum as a target photosensitive unit, wherein the distance between any two target photosensitive units is larger than a preset distance.
In this embodiment, the signal strength extremum includes a signal strength maximum and a signal strength minimum. In the present embodiment, when the control operation is an illumination type control operation, the photosensitive unit 11 corresponding to the maximum value of the photosensitive signal intensity, which is determined to be the signal intensity, among the plurality of photosensitive units 11 is the target photosensitive unit; when the control operation is a touch control operation, the photosensitive unit 11 corresponding to the minimum value of the photosensitive signal intensity is determined as the target photosensitive unit from among the plurality of photosensitive units 11.
The preset distance is the minimum diameter of the spot formed on the display screen 15 by the control operation of the user. Wherein the diameter can be determined according to the type of the control operation, for example, when the received control operation is an illumination type, the preset distance is determined to be 0.5 cm; when the received control operation is a touch control operation, the preset distance is determined to be 1 cm. By setting the distance between the target photosensitive units to be greater than the preset distance, the problem that the two photosensitive units 11 of the same control operation are determined to be the target photosensitive units and the display device 10 performs different interactive control operations is avoided, the accuracy of determining the interactive control position by the photosensitive identification circuit 12 is improved, and the accuracy of performing the interactive control operation by the display device 10 is further improved.
In some embodiments, determining a signal intensity extremum of the plurality of photosensitive signal intensities, determining the photosensitive unit 11 corresponding to the signal intensity extremum as the target photosensitive unit includes:
determining a traversing interval according to the preset distance, and traversing the plurality of photosensitive signal intensities according to lines based on the traversing interval;
for each target traversal interval, if a signal intensity extremum exists in the target traversal interval, taking a first photosensitive unit corresponding to the signal intensity extremum as a candidate photosensitive unit, and acquiring a recorded target photosensitive unit;
judging whether the distance between the candidate photosensitive unit and the target photosensitive unit is greater than the preset distance;
if not, determining the photosensitive units 11 with signal intensity extremum in the candidate photosensitive units and the target photosensitive units, and updating the target photosensitive units according to the determined photosensitive units 11;
if yes, the first photosensitive unit is recorded as a new target photosensitive unit.
Referring to fig. 3, in the present embodiment, the photosensitive-recognition circuit 12 determines a traversal section according to a preset distance.
Illustratively, the photosensitive identification circuit 12 traverses the plurality of photosensitive signal intensities of the corresponding areas line by line according to the traversing intervals, acquires a signal intensity extremum in each target traversing interval when traversing the photosensitive signal intensities each time, and takes the first photosensitive unit corresponding to the signal intensity extremum as a candidate photosensitive unit, acquires the distance between the first photosensitive unit and the target photosensitive unit already recorded, and determines whether the distance is larger than a preset distance. If the distance between the candidate photosensitive unit and the target photosensitive unit is larger than the preset distance, determining that the photosensitive signals of the candidate unit and the photosensitive unit are generated under different control operations, and recording the first photosensitive unit as a new target photosensitive unit; if the distance between the candidate photosensitive unit and the target photosensitive unit is smaller than or equal to the preset distance, determining that the candidate photosensitive unit and the target photosensitive unit are light spots generated under the same control operation, and combining the light spots, determining a photosensitive signal intensity extremum of the target photosensitive unit and the candidate photosensitive unit, and updating the target photosensitive unit according to the photosensitive signal intensity extremum.
Specifically, when the control operation is an illumination type control operation, the photosensitive unit having the largest photosensitive signal intensity value among the target photosensitive unit and the candidate photosensitive unit is determined as the target photosensitive unit. For example, when it is determined that the photosensitive signal intensity of the target photosensitive unit is smaller than the signal intensity of the candidate photosensitive unit, the target photosensitive unit is updated to the candidate photosensitive unit. When the control operation is a touch control operation, determining the photosensitive unit with the minimum photosensitive signal intensity value in the target photosensitive unit and the candidate photosensitive unit as the target photosensitive unit. For example, when it is determined that the photosensitive signal intensity of the target photosensitive unit is greater than the signal intensity of the candidate photosensitive unit, the candidate photosensitive unit is updated to be the target photosensitive unit.
In this embodiment, the photosensitive recognition circuit 12 determines the intensity of the scanning photosensitive signal in the traversal interval with a preset distance, uses the first photosensitive unit corresponding to the extremum of the intensity of the signal as the candidate photosensitive unit, and updates the target photosensitive unit according to the extremum of the intensity of the signal in the target photosensitive unit and the determined candidate photosensitive unit when the recorded distance between the target photosensitive unit and the candidate photosensitive unit is less than or equal to the preset distance; and recording the first photosensitive signal as a new target photosensitive unit when the recorded distance between the target photosensitive unit and the candidate photosensitive unit is greater than the preset distance. The target photosensitive unit is obtained by determining the intensity of the scanning photosensitive signal in the traversing interval according to the preset distance, and the accuracy of the determined target photosensitive unit is improved.
In some embodiments, after determining the coordinates of the target light sensing unit on the display screen 15 and determining the first interactive control position according to the coordinates, the method further comprises:
receiving a second interaction control position sent by a previous-stage light sensing identification circuit 12 connected with the light sensing identification circuit 12, and the light sensing signal intensity at the second interaction control position;
calculating the distance between the second interaction control position and the first interaction control position;
when the distance is smaller than or equal to a preset distance, determining a third interaction control position according to the photosensitive signal intensity at the first interaction control position and the photosensitive signal intensity at the second interaction control position, and sending the third interaction control position to a next chip connected with the photosensitive identification circuit 12;
and when the distance is larger than the preset distance, the first interaction control position and the second interaction control position are sent to the next chip.
Referring to fig. 4, in the present embodiment, the photosensitive identification circuit 12 of the display device 10 includes a scan control module 401 for controlling scanning the corresponding photosensitive unit 11, and a voltage detection module 402 for detecting the photosensitive signal generated by the photosensitive unit 11 and sending the photosensitive signal to a signal conversion module 403. When the main processing chip 13 determines that the control operation exists on the display screen 15, the photosensitive recognition circuit 12 is started to collect the photosensitive signal intensity of the photosensitive unit 11. Wherein, when the photosensitive identification circuit 12 is started, the power module 407 sends a reference voltage to the signal conversion module 403. The signal conversion module 403 converts the electrical signal into a digital signal according to the reference voltage, and sends the intensity of the photosensitive signal of the photosensitive unit 11 converted into the digital signal to the coordinate calculation module 404. The coordinate calculation module 404 obtains the second interaction control position determined by the previous-stage photosensitive identification circuit 12 through the previous-stage coordinate input module 405, determines the first interaction control position according to the strength of the photosensitive signal and the second interaction control position sent by the previous-stage photosensitive identification circuit 12, and outputs the first interaction control position through the position output module 406.
The coordinate calculation module 404, the pre-stage coordinate input module 405 and the interactive control position output module are added in the photosensitive identification circuit 12, so that the interactive control position of the display device 10 can be controlled and operated in the photosensitive identification circuit 12, the interactive control position can be determined without an external chip, and the speed of determining the interactive control position is improved.
For example, referring to fig. 5, in this application, there may be multiple light spots in the display screen 15, for example, a light spot a located in the same area, a light spot B located across areas, and there may be multiple light spots (for example, a light spot C and a light spot D) located in the same area, where the light spot B generated by the display screen 15 is located in different areas, and the interactive control position of the control operation needs to be determined jointly by different photosensitive identification circuits 12.
For example, an intermediate position of the first interactive control position and the second interactive control position may also be determined as the third interactive control position.
Illustratively, after the photosensitive recognition circuit 12 determines the first interactive control position, the second interactive control position of the previous photosensitive recognition circuit 12 and the photosensitive signal intensity of the second interactive control position are obtained, the distance between the first interactive control position and the second interactive control position is obtained, and when the distance is smaller than or equal to the preset distance, the first interactive control position and the second interactive control position are determined to be the interactive control position of the same control operation, and the updating is required. Further, it is necessary to acquire the photosensitive signal intensity of the photosensitive unit 11 corresponding to the first interactive control position and the signal intensity extremum of the photosensitive unit 11 corresponding to the second interactive control position, and determine the third interactive control position. Specifically, the signal strength extremum is determined according to the type of control operation.
For example, when the control operation is an illumination type control operation, it is determined that the distance between the first interactive control position and the second interactive control position is smaller than or equal to the preset distance, and when it is further acquired that the signal intensity of the first interactive control position is determined to be greater than the signal intensity of the candidate photosensitive unit, then the coordinates of the photosensitive unit 11, where the third interactive control position is the first interactive control position, are determined.
In the present embodiment, the photosensitive recognition circuit 12 determines the maximum photosensitive signal intensity of the photosensitive signal intensity at the first interactive control position and the photosensitive signal intensity at the second interactive control position, and determines the coordinates of the photosensitive unit 11 corresponding to the maximum signal intensity as the third interactive control position. The accurate determination of the interactive control position is realized.
In an exemplary embodiment, when the distance is greater than the preset distance, the first control position and the second control position are determined to be interaction control positions of different control operations, and then the first interaction control position and the second interaction control position are sent to a next chip.
Alternatively, in the present embodiment, the next chip may be the main processing chip 13 or the photosensitive recognition circuit 12 connected in parallel with the current photosensitive recognition circuit.
In this embodiment, when the photosensitive identification circuit 12 determines the first interactive control position, the second interactive control position obtained by the photosensitive identification circuit 12 at the previous stage is obtained at the same time, and the third interactive control position sent to the photosensitive identification circuit 12 at the next stage is determined according to the first interactive control position and the second interactive control position. The photosensitive recognition circuit 12 can acquire the second interaction control position of the previous stage, further determine the third interaction control position which is required to be output to the next stage chip, and accurately and quickly determine the third interaction control position.
Accordingly, embodiments of the present application also provide a photosensitive identification circuit 12, including a processing unit, where the processing unit is configured to:
acquiring a plurality of photosensitive signal intensities detected by a plurality of photosensitive units 11 corresponding to the photosensitive identification circuit 12;
determining a target photosensitive unit from the plurality of photosensitive units 11 according to the plurality of photosensitive signal intensities;
the coordinates of the target light sensing unit on the display screen 15 are determined and the first interactive control position is determined based on the coordinates.
Wherein the processing unit is further configured to:
and determining a signal intensity extremum in the plurality of photosensitive signal intensities, and determining a photosensitive unit 11 corresponding to the signal intensity extremum as a target photosensitive unit, wherein the distance between any two target photosensitive units is larger than a preset distance.
Wherein the processing unit is further configured to:
determining a traversing interval according to the preset distance, and traversing the plurality of photosensitive signal intensities according to lines based on the traversing interval;
for each target traversal interval, if a signal intensity extremum exists in the target traversal interval, taking a first photosensitive unit 11 corresponding to the signal intensity extremum as a candidate photosensitive unit, and acquiring a recorded target photosensitive unit;
judging whether the distance between the candidate photosensitive unit and the target photosensitive unit is greater than the preset distance;
if not, determining the photosensitive unit 11 with larger photosensitive signal intensity in the candidate photosensitive unit and the target photosensitive unit, and updating the target photosensitive unit according to the determined photosensitive unit 11;
if yes, the first photosensitive unit 11 is recorded as a new target photosensitive unit.
Wherein, processing unit is used for:
when the control operation is an illumination control operation, determining a signal intensity maximum value in the plurality of photosensitive signal intensities;
and when the control operation is a touch control operation, determining a signal intensity minimum value in the plurality of photosensitive signal intensities.
Wherein, processing unit is used for:
receiving a second interaction control position sent by a previous-stage light sensing identification circuit 12 connected with the light sensing identification circuit 12, and the light sensing signal intensity at the second interaction control position;
calculating the distance between the second interaction control position and the first interaction control position;
when the distance is smaller than or equal to a preset distance, determining a third interaction control position according to the photosensitive signal intensity at the first interaction control position and the photosensitive signal intensity at the second interaction control position, and sending the third interaction control position to a next chip connected with the photosensitive identification circuit 12;
and when the distance is larger than the preset distance, the first interaction control position and the second interaction control position are sent to the next chip.
Wherein, processing unit is used for:
determining a signal strength extremum of the light sensing signal strength at the first interactive control location and the light sensing signal strength at the second interactive control location;
and determining the coordinates of the photosensitive unit 11 corresponding to the signal intensity extremum as a third interaction control position.
Wherein the next chip in the processing unit is the next photosensitive identification circuit 12 or the main processing chip 13.
Accordingly, embodiments of the present application also provide a display device 10 including a photosensitive identification circuit 12 as described above; the display device 10 further comprises a main processing chip 13, wherein the main processing chip 13 is connected with the photosensitive identification circuit 12;
the main processing chip 13 is configured to: the interactive control position transmitted by the photosensitive recognition circuit 12 is received, and an interactive control operation is performed based on the interactive control position.
In this embodiment, after the main processing chip 13 acquires the interactive control position sent by the photosensitive identification circuit 12, a corresponding interactive control operation is performed.
The main processing chip 13 may be connected to the plurality of photosensitive identification circuits 12 through a SPI (Serial Peripheral Interface) interface.
After receiving the plurality of interactive control positions, the main processing chip 13 performs corresponding interactive control operations.
For example, upon determining that the interactive control location is the location of the "login" option in the page, login is performed.
The plurality of photosensitive identification circuits 12 are arranged, the plurality of photosensitive identification circuits 12 are connected in series, and the last stage of photosensitive identification circuit 12 is connected with the main processing chip 13;
the main processing chip 13 is configured to: the interactive control position transmitted by the final stage photosensitive recognition circuit 12 is received, and an interactive control operation is performed based on the interactive control position.
Referring to fig. 2, in the present embodiment, a plurality of photosensitive identification circuits 12 are connected in series, thereby forming a multi-layered photosensitive identification circuit 12. It will be appreciated that in this embodiment, the upper stage and the lower stage are relative to the connection position of the current photosensitive identification circuit 12 in the series. For example, the photosensitive-recognition circuit B is a photosensitive-recognition circuit of the next stage with respect to the photosensitive-recognition circuit a, but is a photosensitive-recognition circuit of the previous stage with respect to the photosensitive-recognition circuit C.
Illustratively, in the present embodiment, the photosensitive recognition circuit a may not be provided with the front-stage input coordinate module.
In this embodiment, the main processing chip 13 directly determines the interactive control position through the photosensitive identification circuit 12 without calculating the photosensitive signal of the photosensitive unit 11, so that the speed of the main processing chip 13 executing the corresponding interactive control operation based on the interactive control position is increased.
Wherein, the photosensitive identification circuits 12 are plural, and the plural photosensitive identification circuits 12 are connected in parallel to the main processing chip 13;
the main processing chip 13 is configured to:
receiving a plurality of interactive control positions transmitted by the plurality of photosensitive identification circuits 12;
for each two interactive control positions of the plurality of interactive control positions, calculating a distance between the two interactive control positions;
when the distance is smaller than or equal to a preset distance, determining an interaction control position of the photosensitive signal intensity extremum in the two interaction control positions corresponding to the distance as a target interaction control position;
when the distance is larger than the preset distance, determining two interaction control positions corresponding to the distance as target interaction control positions;
and executing interactive control operation based on the target interactive control position.
Referring to fig. 6, in the present embodiment, a plurality of photosensitive-recognition circuits 12 are connected in parallel.
Illustratively, when the photosensitive-recognition circuits 12 are connected in parallel, the photosensitive-recognition circuits 12 are divided into a photosensitive-recognition circuit a, a photosensitive-recognition circuit B, a photosensitive-recognition circuit C, and a photosensitive-recognition circuit D in this order from left to right. After receiving the first interaction control position of the photosensitive identification circuit a, the second interaction control position of the photosensitive identification circuit B, the third interaction control position of the photosensitive identification circuit C, and the fourth interaction control position of the photosensitive identification circuit D, the main processing chip 13 determines the distance between the interaction control positions. For example, when it is determined that the distance between the first interactive control position and the second interactive control position is less than or equal to the preset distance, it is determined that the first interactive control position and the second interactive control position are interactive control positions of the same control operation, and updating is required. When the control operation is an illumination control operation and it is determined that the photosensitive signal intensity of the first interactive control position is greater than the photosensitive signal intensity of the candidate photosensitive unit, then the coordinates of the photosensitive unit 11 whose target interactive control position is the first interactive control position are determined.
Similarly, the third interaction control position of the photosensitive identification circuit C and the fourth interaction control position of the photosensitive identification circuit D are determined to be interaction control positions of the same control operation. It is further determined to perform 2 interactive control actions.
In the present application, the main processing chip 13 obtains the control positions determined by the plurality of photosensitive identification circuits 12 in a parallel manner, and can primarily determine the interactive control positions in each photosensitive identification circuit 12, further determine the target interactive control positions in the main processing chip 13 according to the comparison result of the distances between the plurality of interactive control positions and the preset distance, and execute the interactive operation based on the target interactive control positions.
The specific implementation of each operation above may be referred to the previous embodiments, and will not be described herein.
The above describes in detail a photosensitive identification circuit, a photosensitive positioning method and a display device provided in the embodiments of the present application, and specific examples are applied herein to illustrate the principles and embodiments of the present application, where the above description of the embodiments is only for helping to understand the method and core ideas of the present application; meanwhile, those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, and the present description should not be construed as limiting the present application in view of the above.
Claims (17)
1. A photosensitive identification circuit, comprising a processing unit for:
acquiring a plurality of photosensitive signal intensities detected by a plurality of photosensitive units corresponding to the photosensitive identification circuit;
determining a target photosensitive unit from the plurality of photosensitive units according to the plurality of photosensitive signal intensities;
and determining the coordinates of the target photosensitive unit on the display screen, and determining a first interaction control position according to the coordinates.
2. The photosensitive identification circuit of claim 1, wherein the processing unit is configured to:
determining a signal intensity extremum in the plurality of photosensitive signal intensities, and determining a photosensitive unit corresponding to the signal intensity extremum as a target photosensitive unit, wherein the distance between any two target photosensitive units is larger than a preset distance.
3. The photosensitive identification circuit of claim 2, wherein the processing unit is configured to:
determining a traversing interval according to the preset distance, and traversing the plurality of photosensitive signal intensities according to lines based on the traversing interval;
for each target traversal interval, if a signal intensity extremum exists in the target traversal interval, taking a first photosensitive unit corresponding to the signal intensity extremum as a candidate photosensitive unit, and acquiring a recorded target photosensitive unit;
judging whether the distance between the candidate photosensitive unit and the target photosensitive unit is greater than the preset distance;
if not, determining the photosensitive unit with larger photosensitive signal intensity in the candidate photosensitive unit and the target photosensitive unit, and updating the target photosensitive unit according to the determined photosensitive unit;
if yes, the first photosensitive unit is recorded as a new target photosensitive unit.
4. The photosensitive identification circuit of claim 2, wherein the processing unit is configured to:
when the control operation is an illumination control operation, determining a signal intensity maximum value in the plurality of photosensitive signal intensities;
and when the control operation is a touch control operation, determining a signal intensity minimum value in the plurality of photosensitive signal intensities.
5. The photosensitive identification circuit of claim 1, wherein the processing unit is configured to:
receiving a second interaction control position sent by a previous-stage photosensitive identification circuit connected with the photosensitive identification circuit, and the strength of a photosensitive signal at the second interaction control position;
calculating the distance between the second interaction control position and the first interaction control position;
when the distance is smaller than or equal to a preset distance, a third interaction control position is determined according to the photosensitive signal intensity at the first interaction control position and the photosensitive signal intensity at the second interaction control position, and the third interaction control position is sent to a next chip connected with the photosensitive identification circuit;
and when the distance is larger than the preset distance, the first interaction control position and the second interaction control position are sent to the next chip.
6. The photosensitive identification circuit of claim 5, wherein the processing unit is configured to:
determining a signal strength extremum of the light sensing signal strength at the first interactive control location and the light sensing signal strength at the second interactive control location;
and determining the coordinates of the photosensitive unit corresponding to the signal intensity extremum as a third interaction control position.
7. The photosensitive identification circuit of claim 6, wherein the next chip is a next-stage photosensitive identification circuit or a main processing chip.
8. A display device comprising the photosensitive identification circuit according to any one of claims 1 to 7; the display device also comprises a main processing chip, wherein the main processing chip is connected with the photosensitive identification circuit;
the main processing chip is used for: and receiving the interactive control position sent by the photosensitive identification circuit, and executing interactive control operation based on the interactive control position.
9. The display device of claim 8, wherein a plurality of said photosensitive identification circuits are connected in series, a final stage photosensitive identification circuit being connected to said main processing chip;
the main processing chip is used for: and receiving the interaction control position sent by the final-stage photosensitive identification circuit, and executing interaction control operation based on the interaction control position.
10. The display device of claim 8, wherein there are a plurality of said photosensitive identification circuits, a plurality of said photosensitive identification circuits being connected in parallel to said main processing chip;
the main processing chip is used for:
receiving a plurality of interaction control positions sent by the plurality of photosensitive identification circuits;
for each two interactive control positions of the plurality of interactive control positions, calculating a distance between the two interactive control positions;
when the distance is smaller than or equal to a preset distance, determining the interaction control position with the largest photosensitive signal intensity in the two interaction control positions corresponding to the distance as a target interaction control position;
when the distance is larger than the preset distance, determining two interaction control positions corresponding to the distance as target interaction control positions;
and executing interactive control operation based on the target interactive control position.
11. A photosensitive positioning method, applied to a photosensitive identification circuit, comprising:
acquiring a plurality of photosensitive signal intensities detected by a plurality of photosensitive units corresponding to the photosensitive identification circuit;
determining a target photosensitive unit from the plurality of photosensitive units according to the plurality of photosensitive signal intensities;
and determining the coordinates of the target photosensitive unit on the display screen, and determining a first interaction control position according to the coordinates.
12. The method of claim 11, wherein determining a target photosensitive unit from the plurality of photosensitive units based on the plurality of photosensitive signal strengths, comprises:
determining a signal intensity extremum in the plurality of photosensitive signal intensities, and determining a photosensitive unit corresponding to the signal intensity extremum as a target photosensitive unit, wherein the distance between any two target photosensitive units is larger than a preset distance.
13. The method of claim 12, wherein determining a signal strength extremum of the plurality of photosensitive signal strengths, determining a photosensitive cell to which the signal strength extremum corresponds as a target photosensitive cell, comprises:
determining a traversing interval according to the preset distance, and traversing the plurality of photosensitive signal intensities according to lines based on the traversing interval;
for each target traversal interval, if a signal intensity extremum exists in the target traversal interval, taking a first photosensitive unit corresponding to the signal intensity extremum as a candidate photosensitive unit, and acquiring a recorded target photosensitive unit;
judging whether the distance between the candidate photosensitive unit and the target photosensitive unit is greater than the preset distance;
if not, determining the photosensitive units with signal intensity extremum in the candidate photosensitive units and the target photosensitive units, and updating the target photosensitive units according to the determined photosensitive units;
if yes, the first photosensitive unit is recorded as a new target photosensitive unit.
14. The method of claim 12, wherein said determining a signal intensity extremum of said plurality of photosensitive signal intensities comprises:
when the control operation is an illumination control operation, determining a signal intensity maximum value in the plurality of photosensitive signal intensities;
and when the control operation is a touch control operation, determining a signal intensity minimum value in the plurality of photosensitive signal intensities.
15. The method according to any one of claims 11 to 14, wherein after determining coordinates of the target light sensing unit on the display screen and determining the first interactive control position according to the coordinates, the method further comprises:
receiving a second interaction control position sent by a previous-stage photosensitive identification circuit connected with the photosensitive identification circuit, and the strength of a photosensitive signal at the second interaction control position;
calculating the distance between the second interaction control position and the first interaction control position;
when the distance is smaller than or equal to a preset distance, a third interaction control position is determined according to the photosensitive signal intensity at the first interaction control position and the photosensitive signal intensity at the second interaction control position, and the third interaction control position is sent to a next chip connected with the photosensitive identification circuit;
and when the distance is larger than the preset distance, the first interaction control position and the second interaction control position are sent to the next chip.
16. The method of claim 15, wherein the determining a third interactive control location based on the intensity of the photosensitive signal at the first interactive control location and the intensity of the photosensitive signal at the second interactive control location comprises:
determining a signal strength extremum of the light sensing signal strength at the first interactive control location and the light sensing signal strength at the second interactive control location;
and determining the coordinates of the photosensitive unit corresponding to the signal intensity extremum as a third interaction control position.
17. The method of claim 15, wherein the next level chip is a next level photosensitive identification circuit or a main processing chip.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210920366.5A CN117539360A (en) | 2022-08-02 | 2022-08-02 | Photosensitive identification circuit, photosensitive positioning method and display device |
| PCT/CN2023/081149 WO2024027158A1 (en) | 2022-08-02 | 2023-03-13 | Photosensitive recognition circuit, photosensitive positioning method, and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210920366.5A CN117539360A (en) | 2022-08-02 | 2022-08-02 | Photosensitive identification circuit, photosensitive positioning method and display device |
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| CN117539360A true CN117539360A (en) | 2024-02-09 |
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| CN202210920366.5A Pending CN117539360A (en) | 2022-08-02 | 2022-08-02 | Photosensitive identification circuit, photosensitive positioning method and display device |
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| CN (1) | CN117539360A (en) |
| WO (1) | WO2024027158A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010146506A (en) * | 2008-12-22 | 2010-07-01 | Sharp Corp | Input device, method for controlling input device, program for controlling input device, computer-readable recording medium, and information terminal device |
| CN101751188B (en) * | 2010-01-27 | 2012-04-25 | 汕头超声显示器（二厂）有限公司 | Display device of built-in sensitive device |
| CN102279656B (en) * | 2010-06-10 | 2014-01-22 | 鼎亿数码科技(上海)有限公司 | Laser plane positioning system and implementation method thereof |
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