CN111816115A - Method, circuit, device, medium and electronic equipment for adjusting color cast of display screen - Google Patents
Method, circuit, device, medium and electronic equipment for adjusting color cast of display screen Download PDFInfo
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- CN111816115A CN111816115A CN202010681714.9A CN202010681714A CN111816115A CN 111816115 A CN111816115 A CN 111816115A CN 202010681714 A CN202010681714 A CN 202010681714A CN 111816115 A CN111816115 A CN 111816115A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0242—Compensation of deficiencies in the appearance of colours
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Abstract
The embodiment of the application provides a method and a device for adjusting color cast of a display screen, a computer readable medium and electronic equipment. The method for adjusting the color cast of the display screen comprises the following steps: the method comprises the steps of obtaining corresponding temperatures of different positions of a display screen, measuring the color cast degree of the display screen based on the temperature difference, reducing the power consumption of a driving chip of a display screen lamp bead when the temperature difference is larger than a set threshold value, determining the current and current gain flowing through the display screen lamp bead when the driving chip controls the display screen lamp bead to display based on the set target brightness of the display screen after the power consumption of the driving chip is reduced, and finally controlling the current output by the driving chip to the display screen lamp bead according to the calculated current and current gain. According to the technical scheme, the temperature of the driving chip is reduced through the mode, the color cast degree of the display screen is relieved, the color cast state of the display screen can be balanced through the mode of adjusting the current, and the display effect of the display screen is improved.
Description
Technical Field
The present application relates to the field of computer technologies, and in particular, to a method and an apparatus for adjusting color cast of a display screen, a computer-readable medium, and an electronic device.
Background
The lamp pearl that present LED display screen used is by ruddiness, and blue is closed, and green chip constitutes, and in the LED display screen module use, the temperature can rise gradually to the display module middle part heat is concentrated, and the marginal part heat dissipation is very fast, leads to the module middle temperature high, and both sides temperature is low, and the temperature rise back of ruddiness chip, and the light decay is bigger than blue green light, has finally LED to the module middle white light blue or green, and both sides warm white phenomenon partially. This causes a display screen to be prone to color shift.
Disclosure of Invention
Embodiments of the present application provide a method, an apparatus, a computer-readable medium, and an electronic device for adjusting color cast of a display screen, so that the color cast degree of the display screen can be alleviated to at least a certain extent, and the display effect of the display screen is improved.
Other features and advantages of the present application will be apparent from the following detailed description, or may be learned by practice of the application.
According to an aspect of an embodiment of the present application, there is provided a method for adjusting color cast of a display screen, including: acquiring corresponding temperatures at different positions of a display screen; if the temperature difference between the temperatures is larger than a set threshold value, reducing the power consumption of a driving chip of the display screen lamp bead; after the power consumption of the driving chip is reduced, determining the current and the current gain corresponding to the target brightness when the driving chip controls the display screen lamp bead to display based on the set target brightness of the display screen; and controlling the current output by the driving chip to the display screen lamp bead based on the current corresponding to the target brightness and the current gain.
According to an aspect of the embodiments of the present application, there is provided a circuit for adjusting color cast of a display screen, including: the micro control unit is connected with a temperature detection unit and a voltage detection unit and is used for determining current and current gain corresponding to target brightness when the driving chip controls the display screen to display the lamp beads based on the set target brightness of the display screen; the voltage-controlled current source is connected with the micro control unit to output current for adjusting color cast; the row tubes are connected with the micro control unit, and each row tube is connected with the diodes of at least two channels and used for controlling the lamp beads of the display screen to display corresponding brightness; the driving chip is connected with the voltage-controlled current source and the row tube and used for outputting current corresponding to the target brightness to the display screen lamp bead corresponding to the row tube; the receiving card is connected with the micro control unit and used for transmitting gray signals, brightness signals and current gain signals between the micro control unit, the receiving card is also connected with the row tube and used for sending row selection signals to the row tube, and the receiving card is also connected with the potentiometer.
According to an aspect of the embodiments of the present application, there is provided an apparatus for adjusting color cast of a display screen, including: the acquisition unit is used for acquiring corresponding temperatures at different positions of the display screen; the power consumption unit is used for reducing the power consumption of a driving chip of the display screen lamp bead if the temperature difference between the temperatures is larger than a set threshold value; the determining unit is used for determining current and current gain corresponding to target brightness when the driving chip controls the display screen lamp bead to display based on the set target brightness of the display screen after the power consumption of the driving chip is reduced; and the control unit is used for controlling the current output by the driving chip to the display screen lamp bead based on the current corresponding to the target brightness and the current gain.
In some embodiments of the present application, based on the foregoing scheme, the driving chip is connected in series with a digital potentiometer; the power consumption unit is used for: and increasing the resistance of the digital potentiometer to reduce the power consumption of the driving chip.
In some embodiments of the present application, based on the foregoing scheme, the determining unit includes: the first determining unit is used for determining a current corresponding to the target brightness based on the target brightness and a circuit parameter; and the second determining unit is used for determining the current gain corresponding to the target brightness based on the circuit parameters.
In some embodiments of the present application, based on the foregoing scheme, the circuit parameters include a brightness coefficient, a temperature light decay coefficient, and the brightness utilization rate; the first determination unit includes: a third determination unit configured to determine a first parameter based on a product between the luminance coefficient, the temperature light attenuation coefficient, the luminance utilization rate, and the temperature; a fourth determining unit, configured to determine a current corresponding to the target brightness based on a quotient between the target brightness and the first parameter.
In some embodiments of the present application, based on the foregoing solution, the apparatus for adjusting color cast of a display screen further includes: the detection unit is used for detecting the current brightness of the display screen; and the fifth determining unit is used for re-determining the current for compensating the color cast of the display screen if the difference value between the current brightness and the target brightness is larger than a set threshold value.
According to an aspect of the embodiments of the present application, there is provided a computer readable medium, on which a computer program is stored, which when executed by a processor, implements the method for adjusting color cast of a display screen as described in the above embodiments.
According to an aspect of an embodiment of the present application, there is provided an electronic device including: one or more processors; a storage device for storing one or more programs which, when executed by the one or more processors, cause the one or more processors to implement a method of adjusting display screen color cast as described in the embodiments above.
According to an aspect of embodiments herein, there is provided a computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions to cause the computer device to perform the method for adjusting color cast of the display screen provided in the above-mentioned various alternative implementations.
In the technical scheme provided by some embodiments of the application, the temperatures corresponding to different positions of the display screen are obtained, the color cast degree of the display screen is measured based on the temperature difference, and then when the temperature difference is greater than a set threshold value, the power consumption of the driving chip of the display screen lamp bead is firstly reduced, after the power consumption of the driving chip is reduced, the current and the current gain flowing through the display screen lamp bead when the driving chip controls the display screen lamp bead to display are determined based on the set target brightness of the display screen, and finally the current and the current gain obtained by calculation are used for controlling the current output by the driving chip to the display screen lamp bead.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 illustrates a flow diagram of a method of adjusting display screen color cast according to one embodiment of the present application;
FIG. 2 schematically illustrates a current versus brightness graph according to an embodiment of the present application;
FIG. 3 schematically illustrates a flow chart for adjusting display screen color cast according to an embodiment of the present application;
FIG. 4 schematically illustrates a circuit diagram of a circuit for adjusting color cast of a display screen according to an embodiment of the present application;
FIG. 5 schematically illustrates a block diagram of an apparatus for adjusting color cast of a display screen according to an embodiment of the present application.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the subject matter of the present application can be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known methods, devices, implementations, or operations have not been shown or described in detail to avoid obscuring aspects of the application.
The block diagrams shown in the figures are functional entities only and do not necessarily correspond to physically separate entities. I.e. these functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor means and/or microcontroller means.
The flow charts shown in the drawings are merely illustrative and do not necessarily include all of the contents and operations/steps, nor do they necessarily have to be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.
The implementation details of the technical solution of the embodiment of the present application are set forth in detail below:
FIG. 1 shows a flow diagram of a method of adjusting display screen color cast according to one embodiment of the present application. Referring to fig. 1, the method for adjusting color cast of a display screen at least includes steps S110 to S140, which are described in detail as follows:
in step S110, the corresponding temperatures at different positions of the display screen are obtained.
In one embodiment of the present application, the temperature in the middle area may be higher than the temperature in the edge area due to heat dissipation problems of the display screen. In this embodiment, the temperature states of the display screen are determined by obtaining the temperatures corresponding to different positions of the display screen, and then whether color cast processing is to be performed is determined by the temperatures corresponding to the different positions.
The different positions in this embodiment may be positions different by a certain distance, or the like, or may be set positions, such as the center position of the display screen and the positions of the four corners of the display screen.
In step S120, if the temperature difference between the temperatures is greater than a set threshold, the power consumption of the driving chip of the display screen lamp bead is reduced.
In an embodiment of the application, for example, 2121 full-color LED lamp bead display is taken as an example, and an important reason for causing temperature rise of an LED display screen module is that a large number of LED lamp beads and their driver ICs are used, so that it is especially important to reduce power consumption of the driver ICs and the lamp beads, because most of the lamp beads are co-anode lamp beads, that is, anodes of the lamp beads share one power supply, generally, 5V power supply, and operating voltage of red lamp beads is about 2V, that is, the driver ICs have 3V voltage when turned on, and red current is large, and 2121 lamp bead current is about 10mA, that is, power of each channel of the IC is about 0.03W, corresponding to one driver IC with 16 common channels, total power consumption is about 0.48W, and total power consumption is about 0.24W when duty ratio is 50%; and the blue and green light operating voltage is about 3V, and driver IC has 2V voltage, and 2121 lamp pearl electric current is about 5mA, and every channel power is about 0.01W, and 16 passageway IC is about 0.16W, and the duty cycle is under 50%'s the condition, and the power consumption is 0.08W, is 1/3 of red light driver IC power consumption. Therefore, the red light chip of the lamp bead has the largest current and the lowest lighting effect, and is the main source of heating, so that the phenomenon of uneven heat dissipation is eliminated, and the color development deviation of the display screen is adjusted by taking the heating phenomenon of the red light lamp bead and the red light drive IC as the main reason.
In one embodiment of the present application, the driving chip is connected in series with a digital potentiometer; in step S120, if the temperature difference between the temperatures is greater than the set threshold, the process of reducing the power consumption of the driver chip of the display screen lamp bead includes the following steps:
and increasing the resistance of the digital potentiometer to reduce the power consumption of the driving chip.
In an embodiment of the present application, an important reason for causing the temperature of the LED display screen module to rise is that because of the driver ICs of the numerous LED lamp beads, it is especially important to reduce the power consumption of the driver ICs, the operating voltage of the chip of the red light lamp beads is about 1V lower than that of the chip of the blue-green light lamp beads, therefore, at the same voltage, the voltage of the red light driver ICs is higher, and the current of the red light chip is larger, which causes the power consumption of the red light driver ICs to be larger, therefore, a digital potentiometer is added to the channel of the red light driver ICs to bear part of the voltage of the driver ICs, and the heat dissipation power consumption of. Taking a 5V power supply as an example, the operating voltage of the red light lamp bead is about 2V, the current is 10mA, if the digital potentiometer is 100 ohms, the voltage shared by the digital potentiometer is 1V, the voltage shared by the driving IC is about 2V, the power consumption is reduced by one third, the power consumption of a single channel is reduced by 10mW, for 1 16 channel driving IC, the power consumption of about 160mW is reduced, and under the condition that the duty ratio is 50%, the total power consumption is reduced by about 80 mW. And when the lamp pearl was out of work, increased the resistance, also reduced the back pressure, prolonged the life of lamp pearl.
In step S130, after the power consumption of the driver chip is reduced, based on the set target brightness of the display screen, it is determined that the current and the current gain corresponding to the target brightness are obtained when the driver chip controls the display of the display screen bead.
In an embodiment of the application, after the power consumption of the driving chip is reduced, in a state of low power consumption of the driving chip, the output current of the driving chip is determined based on the circuit parameters, so that the display brightness of the display screen lamp bead is adjusted through the output current.
In an embodiment of the application, the process of determining the current and the current gain corresponding to the target brightness when the driving chip controls the display screen to display the lamp bead based on the set target brightness of the display screen in step S130 includes step S1301 and step S1302, which are described in detail as follows:
in step S1301, a current corresponding to the target brightness is determined based on the target brightness and the circuit parameter.
In an embodiment of the application, under a normal condition, preliminary adjustment of brightness and color coordinates of a display screen module needs to be realized by presetting a white balance resistor, generally, the ratio of red, green and blue brightness needs to meet 3:6:1, color cast phenomena can be caused by voltage and temperature, but in actual use, working voltages are basically consistent, color cast phenomena caused by voltage and main problems or color cast phenomena caused by uneven heat dissipation are rarely caused, and finally, a driving chip is required to achieve color cast compensation by adjusting current flowing through a lamp bead.
In one embodiment of the present application, the circuit parameters include a luminance coefficient, a temperature light decay coefficient, and the luminance utilization rate; determining a current corresponding to the target brightness based on the target brightness and the circuit parameter, including:
determining a first parameter based on a product between the brightness coefficient, the temperature light decay coefficient, the brightness utilization rate, and a temperature;
and determining the current corresponding to the target brightness based on the quotient between the target brightness and the first parameter.
In one embodiment of the application, the brightness coefficient is K, which is related to the dot spacing between the lamp beads and the number of line scans; the temperature light attenuation coefficient is S, the luminance utilization rate is E, the temperature is T, and the product of these data amounts is calculated as K × E × S × T, which is the first parameter.
Fig. 2 is a graph illustrating a relationship between current and brightness according to an embodiment of the present disclosure.
As shown in fig. 2, the relationship between the current 220 and the luminance parameter 210 is a function f (iout). In this embodiment, the relationship between the current of the lamp bead and the brightness is as follows:
LB＝k*f(Iout)*E*S*T
based on the quotient between the set target lightness LB and the first parameter, f (iout) can be determined; and then determining the output current Iout of the driving chip to the display screen lamp bead according to the relation between the current and the brightness, namely the output current of the driving chip to the display screen lamp bead, so as to directly adjust the driving chip based on the current and output the current corresponding to the target brightness.
In step S1302, a current gain corresponding to the target brightness is determined based on the circuit parameter.
In one embodiment of the present application, the relationship between the current of the driver chip and the current gain is:
Iout＝k*Iy*Igain
the Iout represents the output current of the driving chip to the display screen lamp bead; k represents a current fixed compensation coefficient; iy represents the output current of the voltage-controlled current source, namely the target current; igain represents the current gain of the target current.
In this embodiment, based on the lamp bead output current of the display screen, the target current and the current gain corresponding to the target brightness can be obtained through two methods: adopting the target current in the previous state, firstly adjusting the current gain, and if the current gain cannot reach the output current of the display screen to the lamp bead, continuously adjusting the target current output by the voltage-controlled current source; and the second method adopts the target current gain of the previous state to adjust the target current of the voltage-controlled current source, and if the target current cannot reach the output current of the display screen to the lamp bead, the current gain is continuously adjusted to obtain the output current of the display screen lamp bead.
In step S140, based on the current and the current gain corresponding to the target brightness, the current output by the driving chip to the display screen lamp bead is controlled.
In an embodiment of the application, after the voltage-controlled current source current and the current gain are obtained, the driving chip is controlled to output corresponding current to the display screen lamp bead so as to adjust the brightness of the display screen lamp bead.
In one embodiment of the application, the MCU outputs a voltage of 0-3.3V through the DAC module to adjust the output current of the voltage-controlled current source, so that the voltage is used for controlling the output of the current. The output current of the voltage-controlled current source and the current controlled by the current gain are shared to REXT pins of each driving chip to realize the precise adjustment and distribution of the current. The voltage-controlled current source can be in a circuit form built by integrating an operational amplifier.
Fig. 3 is a flowchart illustrating an adjustment of color cast of a display screen according to an embodiment of the disclosure.
As shown in fig. 3, in this embodiment, in step S1, the temperature and voltage of the display screen are collected first; calculating a temperature difference of the display screen in step S2; in step S3, it is checked whether the temperature difference exceeds a set temperature difference range; if yes, information of target brightness, current gain, light attenuation and the like of the display screen is obtained in step S4; adjusting the driving chip to output the digital potentiometer in step S5; calculating color cast compensation information based on the target brightness, light attenuation, and the like in step S6; adjusting a current gain based on the calculated color cast compensation information and outputting a corresponding current in step S7; detecting the current brightness of the display screen in step S8; in step S9, it is determined whether the current brightness exceeds the deviation set by the target brightness, and if the difference between the current brightness and the target brightness is greater than the set threshold, the current for compensating the color cast of the display screen is determined again.
FIG. 4 shows a circuit diagram of a circuit for adjusting color cast of a display screen according to one embodiment of the present application. Referring to fig. 4, the circuit for adjusting color cast of the display screen at least comprises the following components:
the micro control unit 410 is connected with a temperature detection unit and a voltage detection unit, and is used for determining current and current gain corresponding to target brightness when the driving chip 440 controls the display screen lamp bead to display based on the set target brightness of the display screen;
a voltage-controlled current source 420 connected to the micro control unit 410 to output a current for adjusting color shift;
the row tubes 430 are connected with the micro control unit 410, and each row tube 430 is connected with diodes of at least two channels and used for controlling the display screen lamp beads to display corresponding brightness;
the driving chip 440 is connected with the voltage-controlled current source 420 and the row tube 430, and is configured to output a current corresponding to the target brightness to a display screen lamp bead corresponding to the row tube 430;
the receiving card 450 is connected to the micro control unit 410, and is configured to transmit a gray signal, a luminance signal, and a current gain signal to the micro control unit 410, and the receiving card 450 is further connected to the row pipe 430, and is configured to send a row selection signal to the row pipe 430.
In one embodiment of the present application, the voltage-controlled current source 420 is connected to the driving chip 440 through a resistor; the row tube 430 is connected with the driving chip 440 through a resistor 460 of a potentiometer, and is used for reducing the power consumption of the driving chip 440 by increasing the resistance value of the resistor of the potentiometer.
Embodiments of the apparatus of the present application are described below, which may be used to perform the method for adjusting color cast of a display screen in the above embodiments of the present application. It will be appreciated that the apparatus may be a computer program (comprising program code) running on a computer device, for example an application software; the apparatus may be used to perform the corresponding steps in the methods provided by the embodiments of the present application. For details that are not disclosed in the embodiments of the apparatus of the present application, please refer to the embodiments of the method for adjusting color cast of a display screen described above in the present application.
FIG. 5 shows a block diagram of an apparatus for adjusting display screen color cast according to an embodiment of the present application.
Referring to fig. 5, an apparatus 500 for adjusting color cast of a display screen according to an embodiment of the present application includes: an obtaining unit 510, configured to obtain temperatures corresponding to different positions of a display screen; the power consumption unit 520 is used for reducing the power consumption of a driving chip of the display screen lamp bead if the temperature difference between the temperatures is larger than a set threshold value; a determining unit 530, configured to determine, based on a set target brightness of the display screen after reducing power consumption of the driver chip, a current and a current gain corresponding to the target brightness when the driver chip controls display of the display screen bead; and the control unit 540 is configured to control the current output by the driving chip to the display screen lamp bead based on the current and the current gain corresponding to the target brightness.
In some embodiments of the present application, based on the foregoing scheme, the driving chip is connected in series with a digital potentiometer; the power consumption unit 520 is configured to: and increasing the resistance of the digital potentiometer to reduce the power consumption of the driving chip.
In some embodiments of the present application, based on the foregoing scheme, the determining unit 530 includes: the first determining unit is used for determining a current corresponding to the target brightness based on the target brightness and a circuit parameter; and the second determining unit is used for determining the current gain corresponding to the target brightness based on the circuit parameters.
In some embodiments of the present application, based on the foregoing scheme, the circuit parameters include a brightness coefficient, a temperature light decay coefficient, and the brightness utilization rate; the first determination unit includes: a third determination unit configured to determine a first parameter based on a product between the luminance coefficient, the temperature light attenuation coefficient, the luminance utilization rate, and the temperature; a fourth determining unit, configured to determine a current corresponding to the target brightness based on a quotient between the target brightness and the first parameter.
In some embodiments of the present application, based on the foregoing solution, the apparatus 500 for adjusting color cast of a display screen further includes: the detection unit is used for detecting the current brightness of the display screen; and the fifth determining unit is used for re-determining the current for compensating the color cast of the display screen if the difference value between the current brightness and the target brightness is larger than a set threshold value.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. Each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams or flowchart illustration, and combinations of blocks in the block diagrams or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The units described in the embodiments of the present application may be implemented by software, or may be implemented by hardware, and the described units may also be disposed in a processor. Wherein the names of the elements do not in some way constitute a limitation on the elements themselves.
According to an aspect of the application, a computer program product or computer program is provided, comprising computer instructions, the computer instructions being stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions to cause the computer device to perform the method provided in the various alternative implementations described above.
As another aspect, the present application also provides a computer-readable medium, which may be contained in the electronic device described in the above embodiments; or may exist separately without being assembled into the electronic device. The computer readable medium carries one or more programs which, when executed by an electronic device, cause the electronic device to implement the method described in the above embodiments.
As another aspect, the present application further provides an electronic device, including: one or more processors; a storage device to store one or more programs that, when executed by the one or more processors, cause the one or more processors to implement the method of adjusting display screen color cast as described above.
It should be noted that although in the above detailed description several modules or units of the device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functionality of two or more modules or units described above may be embodied in one module or unit, according to embodiments of the application. Conversely, the features and functions of one module or unit described above may be further divided into embodiments by a plurality of modules or units.
Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware. Therefore, the technical solution according to the embodiments of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which can be a personal computer, a server, a touch terminal, or a network device, etc.) to execute the method according to the embodiments of the present application.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (10)
1. A method for adjusting color cast of a display screen, comprising:
acquiring corresponding temperatures at different positions of a display screen;
if the temperature difference between the temperatures is larger than a set threshold value, reducing the power consumption of a driving chip of the display screen lamp bead;
after the power consumption of the driving chip is reduced, determining the current and the current gain corresponding to the target brightness when the driving chip controls the display screen lamp bead to display based on the set target brightness of the display screen;
and controlling the current output by the driving chip to the display screen lamp bead based on the current corresponding to the target brightness and the current gain.
2. The method of claim 1, wherein the driver chip is connected in series with a digital potentiometer; reduce display screen lamp pearl's driver chip's consumption includes:
and increasing the resistance of the digital potentiometer to reduce the power consumption of the driving chip.
3. The method of claim 1, wherein determining a current and a current gain corresponding to a target brightness when the driving chip controls the display screen to display the lamp bead based on the set target brightness of the display screen comprises:
determining a current corresponding to the target brightness based on the target brightness and the circuit parameters;
and determining the current gain corresponding to the target brightness based on the circuit parameter.
4. The method of claim 3, wherein the circuit parameters include a luminance coefficient, a temperature light decay coefficient, the luminance utilization factor;
determining a current corresponding to the target brightness based on the target brightness and the circuit parameter, including:
determining a first parameter based on a product between the brightness coefficient, the temperature light decay coefficient, the brightness utilization rate, and a temperature;
and determining the current corresponding to the target brightness based on the quotient between the target brightness and the first parameter.
5. The method of claim 1, wherein after controlling the current output by the driver chip to the display screen lamp bead based on the current and the current gain corresponding to the target brightness, the method further comprises:
detecting the current brightness of the display screen;
and if the difference value between the current brightness and the target brightness is larger than a set threshold value, re-determining the current for compensating the color cast of the display screen.
6. A circuit for adjusting color cast of a display screen, comprising:
the micro control unit is connected with a temperature detection unit and a voltage detection unit and is used for determining current and current gain corresponding to target brightness when the driving chip controls the display screen to display the lamp beads based on the set target brightness of the display screen;
the voltage-controlled current source is connected with the micro control unit to output current for adjusting color cast;
the row tubes are connected with the micro control unit, and each row tube is connected with the diodes of at least two channels and used for controlling the lamp beads of the display screen to display corresponding brightness;
the driving chip is connected with the voltage-controlled current source and the row tube and used for outputting current corresponding to the target brightness to the display screen lamp bead corresponding to the row tube;
and the receiving card is connected with the micro control unit and used for transmitting the gray signal, the brightness signal and the current gain signal between the micro control unit, and the receiving card is also connected with the row tube and used for sending a row selection signal to the row tube.
7. The circuit for adjusting color cast of a display screen according to claim 6, comprising:
the row tube is connected with the driving chip through a resistor of a potentiometer and used for reducing the power consumption of the driving chip by increasing the resistance value of the resistor.
8. An apparatus for adjusting color cast of a display screen, comprising:
the acquisition unit is used for acquiring corresponding temperatures at different positions of the display screen;
the power consumption unit is used for reducing the power consumption of a driving chip of the display screen lamp bead if the temperature difference between the temperatures is larger than a set threshold value;
the determining unit is used for determining current and current gain corresponding to target brightness when the driving chip controls the display screen lamp bead to display based on the set target brightness of the display screen after the power consumption of the driving chip is reduced;
and the control unit is used for controlling the current output by the driving chip to the display screen lamp bead based on the current corresponding to the target brightness and the current gain.
9. A computer-readable medium, on which a computer program is stored which, when being executed by a processor, carries out the method of adjusting a color cast of a display screen according to any one of claims 1 to 5.
10. An electronic device, comprising:
one or more processors;
storage means for storing one or more programs which, when executed by the one or more processors, cause the one or more processors to carry out a method of adjusting display screen color cast according to any one of claims 1 to 5.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010681714.9A CN111816115A (en) | 2020-07-15 | 2020-07-15 | Method, circuit, device, medium and electronic equipment for adjusting color cast of display screen |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010681714.9A CN111816115A (en) | 2020-07-15 | 2020-07-15 | Method, circuit, device, medium and electronic equipment for adjusting color cast of display screen |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113724650A (en) * | 2021-09-03 | 2021-11-30 | 京东方科技集团股份有限公司 | Display panel, display device and temperature adjusting method |
| CN114783354A (en) * | 2022-03-29 | 2022-07-22 | 厦门凌阳华芯科技有限公司 | Color cast compensation method, architecture and medium |
| CN115394228A (en) * | 2022-08-19 | 2022-11-25 | 武汉天马微电子有限公司 | Voltage control method, device, equipment, medium and product |
| CN116312402A (en) * | 2023-05-17 | 2023-06-23 | 中科(深圳)无线半导体有限公司 | Mini LED backlight driving method |
-
2020
- 2020-07-15 CN CN202010681714.9A patent/CN111816115A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113724650A (en) * | 2021-09-03 | 2021-11-30 | 京东方科技集团股份有限公司 | Display panel, display device and temperature adjusting method |
| CN114783354A (en) * | 2022-03-29 | 2022-07-22 | 厦门凌阳华芯科技有限公司 | Color cast compensation method, architecture and medium |
| CN114783354B (en) * | 2022-03-29 | 2024-02-27 | 厦门凌阳华芯科技股份有限公司 | Color cast compensation method, architecture and medium |
| CN115394228A (en) * | 2022-08-19 | 2022-11-25 | 武汉天马微电子有限公司 | Voltage control method, device, equipment, medium and product |
| CN116312402A (en) * | 2023-05-17 | 2023-06-23 | 中科(深圳)无线半导体有限公司 | Mini LED backlight driving method |
| CN116312402B (en) * | 2023-05-17 | 2023-08-29 | 中科(深圳)无线半导体有限公司 | Mini LED backlight driving method |
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