CN114898715A - Screen backlight control method, device, terminal and medium - Google Patents
Screen backlight control method, device, terminal and medium Download PDFInfo
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- CN114898715A CN114898715A CN202210468214.6A CN202210468214A CN114898715A CN 114898715 A CN114898715 A CN 114898715A CN 202210468214 A CN202210468214 A CN 202210468214A CN 114898715 A CN114898715 A CN 114898715A
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000004891 communication Methods 0.000 claims abstract description 7
- 238000004590 computer program Methods 0.000 claims description 13
- 230000001960 triggered effect Effects 0.000 claims description 12
- 230000007958 sleep Effects 0.000 claims description 9
- 230000009286 beneficial effect Effects 0.000 abstract description 6
- 230000005059 dormancy Effects 0.000 abstract description 3
- 230000008878 coupling Effects 0.000 abstract description 2
- 238000010168 coupling process Methods 0.000 abstract description 2
- 238000005859 coupling reaction Methods 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract 1
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- 238000010586 diagram Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 7
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- 230000004069 differentiation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000004438 eyesight Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
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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
- G09G3/34—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 by control of light from an independent source
- G09G3/3406—Control of illumination source
- G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
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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
- G09G2320/06—Adjustment of display parameters
- G09G2320/0613—The adjustment depending on the type of the information to be displayed
- G09G2320/062—Adjustment of illumination source parameters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention provides a screen backlight control method, a device, a terminal and a medium, wherein the method is applied to the terminal, the terminal controls backlight chips of at least two screens through a multi-channel communication interface, and the method comprises the following steps: receiving a backlight control instruction of a backlight chip of the screen; and transmitting the backlight control instruction to a backlight chip corresponding to the screen according to the screen identifier in the backlight control instruction, so that the backlight chip adjusts the screen parameters of the screen according to the backlight control instruction. The screen backlight control method is used for controlling the backlight brightness of a single screen and dormancy awakening, is beneficial to reducing energy consumption, and solves the problems that the backlight brightness of each screen is mutually influenced and the coupling is strong when a single-path controller controls multiple screens in the prior art.
Description
Technical Field
The invention relates to the field of multi-screen equipment, in particular to a screen backlight control method, a screen backlight control device, a screen backlight control terminal and a screen backlight control medium.
Background
The control of different screen backlight brightness and on-off screen has great practical value in the field of multi-screen. One design method of multi-screen equipment on the market is that a single-way controller controls multiple screens, but in the existing single-way controller control multi-screen scheme, each screen cannot be controlled independently, corresponding backlights can only have the same brightness or the backlight brightness of each screen can be influenced mutually according to an algorithm, the coupling is strong, so that the functions of backlight brightness, dormancy awakening and the like cannot be controlled independently, and then the problem of high power consumption of multi-screen equipment occurs. Multi-screen equipment realized by the existing single-path Mobile Industry Processor Interface (MIPI) and Display Serial bus Interface (DSI) cannot differentially control a single screen. Therefore, a screen backlight control method, apparatus, terminal and medium are needed to improve the above problems.
Disclosure of Invention
The invention aims to provide a screen backlight control method, a screen backlight control device, a screen backlight control terminal and a screen backlight control medium.
In a first aspect, an embodiment of the present invention provides a screen backlight control method, which is applied to a terminal, where the terminal controls backlight chips of at least two screens through a multi-channel communication interface, and the method includes: receiving a backlight control instruction of a backlight chip of the screen; and transmitting the backlight control instruction to a backlight chip corresponding to the screen according to the screen identifier in the backlight control instruction, so that the backlight chip adjusts the screen parameters of the screen according to the backlight control instruction.
The method has the beneficial effects that: and transmitting the backlight control instruction to a backlight chip of a corresponding screen according to the screen identifier in the backlight control instruction, and independently adjusting (manually or automatically) the backlight brightness of the multiple screens and independently controlling the dormancy awakening of the multiple screens (namely, the backlight brightness of different screens and the screen on-off control). The multi-screen differentiation control is realized by converting a single-path mobile industry processor interface and a display serial bus interface into a multi-path communication interface. For example, one wants to manually adjust one screen highlight, one screen highlight; or in a plurality of vehicle-mounted screens, due to different directions, the screen under strong light needs to be high-light, the screen in a dark place needs to be dark, and the like. In addition, dimming may also reduce power consumption for screens that do not require highlighting.
In a possible implementation scheme, the backlight control instruction is a backlight brightness adjustment instruction, or a backlight wake-up instruction, or a backlight sleep instruction.
In a possible implementation, transmitting the backlight control instruction to the backlight chip according to the screen identifier includes: when the backlight control instruction is a backlight brightness adjusting instruction manually triggered by a user, transmitting the screen parameters to a kernel driving layer through a frame layer according to the screen identification in the backlight control instruction; and the kernel driving layer controls a pulse width modulation signal by reading and writing a backlight chip register corresponding to the screen identifier so as to adjust the backlight brightness.
In a possible implementation, transmitting the backlight control instruction to the backlight chip according to the screen identifier includes: when the backlight control instruction is a backlight brightness adjustment instruction automatically triggered by a system, transmitting the screen parameters to an operation node of an abstract layer according to the screen identifier in the backlight control instruction; the operation node transmits the generated operation data to the kernel driving layer through the framework layer; the kernel driving layer controls the pulse width modulation signal by reading and writing the backlight control chip register so as to adjust the backlight brightness.
In one possible implementation, before receiving the backlight control instruction, the method further includes: setting the screen parameters corresponding to each screen in advance according to each screen identifier; and initializing each screen according to each screen identifier and each screen parameter corresponding to the screen identifier.
In a second aspect, an embodiment of the present invention provides a screen backlight control device, configured to implement the system according to any one of the first aspects, where the device is connected to backlight chips of at least two screens through a multi-channel communication interface, and the device includes: the receiving unit is used for receiving backlight control instructions of backlight chips of the at least two screens; and the control unit is used for transmitting the backlight control instruction to a backlight chip corresponding to the screen according to the screen identifier in the backlight control instruction so that the backlight chip adjusts the screen parameters of the screen according to the backlight control instruction.
In a possible implementation scheme, the backlight control instruction is a backlight brightness adjustment instruction, or the backlight control instruction is a backlight wake-up instruction, or the backlight control instruction is a backlight sleep instruction.
In a possible implementation scheme, the control unit transmits the backlight control instruction to a backlight chip of a corresponding screen according to the screen identifier in the backlight control instruction, and is specifically configured to: when the backlight control instruction is a backlight brightness adjusting instruction manually triggered by a user, transmitting the acquired screen parameters to a kernel driving layer through a frame layer according to the screen identification in the backlight control instruction; the kernel driving layer controls the pulse width modulation signal by reading and writing the backlight control chip register so as to adjust the backlight brightness.
In a possible implementation scheme, the control unit transmits the backlight control instruction to a backlight chip of a corresponding screen according to the screen identifier in the backlight control instruction, and is specifically configured to: when the backlight control instruction is a backlight brightness adjustment instruction automatically triggered by a system, transmitting the acquired screen parameters to an operation node of an abstract layer according to the screen identifier in the backlight control instruction; the operation node transmits the generated operation data to the kernel driving layer through the frame layer, and the kernel driving layer controls the pulse width modulation signal in a mode of reading and writing the backlight control chip register so as to adjust the backlight brightness.
In a possible implementation, before receiving the backlight control instruction of the backlight chip of the at least two screens, the control unit is further configured to: setting the screen parameters corresponding to each screen in advance according to the screen identification of each screen; and initializing each screen according to each screen identifier and each screen parameter corresponding to the screen identifier.
In a third aspect, an embodiment of the present invention provides a terminal, including a processor and a memory, where the memory is used to store one or more computer programs; the memory stores one or more computer programs that, when executed by the processor, enable the terminal to implement any of the possible designs of the first aspect described above.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements any one of the possible design methods of the first aspect.
As for the advantageous effects of the above second to fourth aspects, reference may be made to the description in the above first aspect.
Drawings
Fig. 1 is a control scenario of a vehicle-mounted screen according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating a screen backlight control method according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a first terminal according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a second terminal according to an embodiment of the present invention;
FIG. 5 is a flow chart of a manual control software provided by an embodiment of the present invention;
FIG. 6 is a flow chart of an automatic control software according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a control device according to an embodiment of the present invention.
The reference numbers in the figures:
111. a first screen; 112. a second screen; 113. a third screen; 120. a terminal;
310. an external trigger module; 320. a memory module; 330. switching the chip; 340. initializing a module;
510. a frame layer; 511. a display composition system; 512. a first display frame hardware abstraction layer; 520. an abstraction layer; 521. a second display frame hardware abstraction layer; 522. the content corresponds to a backlight control node; 530. a system database; 531. a library function; 540. a kernel driver layer;
701. a receiving unit; 702. a control unit.
Detailed Description
The technical solution in the embodiment of the present invention is described below with reference to the drawings in the embodiment of the present invention. In the description of the embodiments of the present invention, the terminology used in the following embodiments is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used in the specification of the present application and the appended claims, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, such as "one or more", unless the context clearly indicates otherwise. It should also be understood that in the following embodiments of the present application, "at least one", "one or more" means one or more than two (including two). The term "and/or" is used to describe the association relationship of the associated objects, and means that there may be three relationships; for example, a and/or B, may represent: a alone, both A and B, and B alone, where A, B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise. The term "coupled" includes both direct and indirect connections, unless otherwise noted. "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
Fig. 1 is a control scenario of a vehicle-mounted screen according to an embodiment of the present invention.
In view of the problems in the prior art, the present invention provides a screen backlight control method, in an application scenario of a vehicle-mounted multi-screen, as shown in fig. 1, a terminal 120 connects and controls backlight brightness of a first screen 111, a second screen 112, and a third screen 113, respectively.
In other embodiments, the terminal interfaces with multiple backlight partitions of one or more screens. The backlight source is divided into a plurality of areas by the backlight subareas, each area can be independently controlled, and the area light source is adjusted according to the brightness of a screen picture. The area of the picture with high brightness is brighter, and the area with low brightness is adjusted to be lower in brightness or the light source is directly turned off according to the picture, so that the screen is turned on.
It should be noted that the terminal may also be a control center in an intelligent home, such as a router or an intelligent sound box. The number of the screens connected with the terminal can be any positive integer greater than or equal to 2. The backlight brightness of the screen of the equipment in the intelligent home is controlled.
Based on the control scenario illustrated in fig. 1, fig. 2 is a schematic diagram of a screen backlight control method according to an embodiment of the present invention.
S201, receiving backlight control instructions under different scenes;
s202, the backlight control instruction is downloaded to a backlight node of a corresponding screen;
s203, transmitting the backlight parameters to the backlight chip of the corresponding screen;
and S204, adjusting the screen parameters of the screen.
In some embodiments, the backlight control instruction is a backlight brightness adjustment instruction, or the backlight control instruction is a backlight wake-up instruction, or the backlight control instruction is a backlight sleep instruction.
It is worth mentioning that, in some embodiments, before receiving the backlight control instruction of the backlight chip of the at least two screens, the method further comprises: setting the screen parameters corresponding to each screen in advance according to the screen identification of each screen; and initializing each screen according to each screen identifier and each screen parameter corresponding to the screen identifier. The screen driving chip reads backlight information from the memory and completes the initial brightness setting of the screen backlight by controlling the pulse width modulation signal.
Fig. 3 is a schematic diagram of a first terminal according to an embodiment of the present invention; fig. 4 is a schematic diagram of a second terminal according to an embodiment of the present invention.
As shown in fig. 3, the initialization module 340 is connected to an external trigger module 310, the external trigger module 310 is connected to a memory module 320, the memory module 320 is connected to a switch chip 330, the switch chip is connected to a plurality of LCD (Liquid Crystal Display) modules, and the LCD modules include a backlight chip and an LCD backlight bottom plate. The initialization module 340 initializes the ports of each screen and the external trigger module 310 monitors the port signal changes. When receiving a backlight brightness adjusting instruction, the backlight chip controls the LCD backlight bottom plate, and the backlight chip adjusts the backlight brightness of each screen according to the output of Pulse width modulation (pwm) controlled by parameters.
In other embodiments, as shown in fig. 4, when the external trigger module 310 receives the wake-up command, the power supply module performs a power-on operation. When the external trigger module 310 receives the sleep command, the power supply module performs a power-off operation to implement a sleep and wake-up process.
It is worth mentioning that the backlight control instruction includes a manner of manual triggering by a user and automatic triggering by a system. The manual trigger mode of the user comprises an action of touching the screen by the user or a brightness control bar signal. The system automatic triggering mode comprises an environment light signal and a content light signal. The content light signal includes screen display content information. The brightness bar control signal is generated by touch control of the screen. The content light signal is generated from the display content of the screen.
In some embodiments, the action of the user touching the screen generates the brightness bar control signal such that the screen backlight brightness is increased.
In other embodiments, the screen real content generates the content light signal such that the screen backlight brightness is increased.
The embodiment of the invention provides a screen backlight control system, which comprises a frame layer 510, an abstract layer 520, a kernel driving layer and a system database 530; the frame layer 510 is configured to receive a backlight control instruction of a backlight chip of the screen; the abstraction layer 520 is configured to transmit the backlight control instruction to a backlight chip corresponding to the screen according to the screen identifier in the backlight control instruction; the kernel driving layer is used for adjusting the screen parameters of the screen according to the backlight control instruction; the system database 530 is configured to call a library function 531, so that the kernel driver layer adjusts the screen parameters of the screen according to the library function 531.
Fig. 5 is a flowchart of manual control software according to an embodiment of the present invention.
In some embodiments, when the backlight control instruction is a backlight brightness adjustment instruction manually triggered by a user, the acquired screen parameters are transmitted to the kernel driver layer through the frame layer 510 according to a screen identifier in the backlight control instruction; and the kernel driving layer controls a pulse width modulation signal by reading and writing the backlight chip register corresponding to the screen identification so as to adjust the backlight brightness. This arrangement is beneficial for enhancing the user interaction experience.
In some embodiments, the framework layer 510 includes a display composition system 511 and a first display framework hardware abstraction layer 512. The abstraction layer 520 includes a second display frame hardware abstraction layer 521. The abstraction layer connects to a system database 530. The system database 530 includes a library function 531 for providing an operation function. The system database 530 is connected to a kernel driver layer 540. The kernel driving layer comprises a plurality of backlight nodes.
Fig. 6 is a flowchart of an automatic control software according to an embodiment of the present invention.
In other embodiments, when the backlight control instruction is a backlight brightness adjustment instruction automatically triggered by a system, the acquired screen parameters are transmitted to an operation node of an abstraction layer according to a screen identifier in the backlight control instruction; the operation node transmits the generated operation data to the kernel driving layer 540 through the frame layer 510, and the kernel driving layer 540 controls the pulse width modulation signal in a mode of reading and writing the backlight control chip register so as to adjust the backlight brightness. The arrangement is beneficial to automatically controlling the backlight of the screen to be at proper brightness, and is beneficial to the eyesight health of a user.
In some embodiments, the abstraction layer 520 further includes a content corresponding backlight control node 522.
It is worth mentioning that in some embodiments, the initializing each screen further includes: and selecting to set manual trigger of a user or automatic trigger of a system. The user manual trigger and the system automatic trigger may be freely set by the user as priorities.
It should be noted that, at the hardware level of the terminal, the adaptor chip 330 supports signal transmission with a plurality of backlight chips. Correspondingly, in the software level, the system database is connected with the kernel driver layer, and the library function can call a plurality of backlight nodes. This arrangement facilitates simultaneous separate control of backlight brightness, sleep and wake-up of multiple screens. The brightness adjustment of one screen does not affect other screens, thereby being beneficial to reducing unnecessary backlight and saving electric energy.
Fig. 7 is a schematic diagram of a control device according to an embodiment of the present invention.
As shown in fig. 7, an embodiment of the present invention provides a screen backlight control device, where the device is connected to backlight chips of at least two screens through a multi-channel communication interface, and the device includes: a receiving unit 701, configured to receive a backlight control instruction of the backlight chips of the at least two screens; a control unit 702, configured to transmit the backlight control instruction to a backlight chip corresponding to the screen according to the screen identifier in the backlight control instruction, so that the backlight chip adjusts the screen parameter of the screen according to the backlight control instruction.
In some embodiments, the backlight control instruction is a backlight brightness adjustment instruction, or the backlight control instruction is a backlight wake-up instruction, or the backlight control instruction is a backlight sleep instruction.
In some embodiments, the control unit 702 transmits the backlight control instruction to the backlight chip corresponding to the screen according to the screen identifier in the backlight control instruction, and is specifically configured to: when the backlight control instruction is a backlight brightness adjustment instruction manually triggered by a user, transmitting the acquired screen parameters to the kernel driving layer 540 through the frame layer 510 according to a screen identifier in the backlight control instruction; the kernel driver layer 540 controls the pwm signal by reading and writing the backlight control chip register to adjust the backlight brightness.
In some embodiments, the control unit 702 transmits the backlight control instruction to the backlight chip corresponding to the screen according to the screen identifier in the backlight control instruction, and is specifically configured to: when the backlight control instruction is a backlight brightness adjustment instruction automatically triggered by a system, transmitting the acquired screen parameters to an operation node of an abstract layer according to a screen identifier in the backlight control instruction; the operation node transmits the generated operation data to the kernel driver layer 540 through the framework layer 510; the kernel driver layer 540 controls the pwm signal by reading and writing the backlight control chip register to adjust the backlight brightness.
In some embodiments, before the receiving unit 701 receives the backlight control instruction of the backlight chips of the at least two screens, the control unit 702 is further configured to: setting the screen parameters corresponding to each screen in advance according to the screen identification of each screen; and initializing each screen according to each screen identifier and each screen parameter corresponding to the screen identifier.
An embodiment of the present invention provides a terminal, which includes a processor and a memory, where the memory is used to store one or more computer programs; the memory stores one or more computer programs that, when executed by the processor, enable the terminal to implement any of the possible designs of the first aspect described above.
An embodiment of the present invention provides a computer-readable storage medium, in which a computer program is stored, and when the computer program is executed by a processor, the computer program implements any one of the possible design methods of the first aspect.
Through the above description of the embodiments, it is clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the above described functions. For the specific working processes of the system, the apparatus and the unit described above, reference may be made to the corresponding processes in the foregoing method embodiments, and details are not described here again.
Each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present invention may be implemented in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) or a processor to execute all or part of the steps of the methods described in the embodiments of the present application, or all or part of the technical solutions. And the aforementioned storage medium includes: flash memory, removable hard drive, read only memory, random access memory, magnetic or optical disk, and the like.
Although the embodiments of the present invention have been described in detail hereinabove, it is apparent to those skilled in the art that various modifications and variations can be made to these embodiments. However, it is to be understood that such modifications and variations are within the scope and spirit of the present invention as set forth in the following claims. Moreover, the invention as described herein is capable of other embodiments and of being practiced or of being carried out in various ways.
Claims (12)
1. A screen backlight control method is applied to a terminal, and is characterized in that the terminal controls backlight chips of at least two screens through a multipath communication interface, and the method comprises the following steps:
receiving a backlight control instruction of a backlight chip of the screen;
and transmitting the backlight control instruction to a backlight chip corresponding to the screen according to the screen identifier in the backlight control instruction, so that the backlight chip adjusts the screen parameters of the screen according to the backlight control instruction.
2. The method according to claim 1, wherein the backlight control command is a backlight brightness adjustment command, a backlight wake-up command, or a backlight sleep command.
3. The method of claim 1, wherein transmitting the backlight control command to the backlight chip according to the screen identifier comprises: when the backlight control instruction is a backlight brightness adjusting instruction manually triggered by a user, transmitting the screen parameters to a kernel driving layer through a frame layer according to the screen identification in the backlight control instruction;
and the kernel driving layer controls a pulse width modulation signal by reading and writing a backlight chip register corresponding to the screen identifier so as to adjust the backlight brightness.
4. The method of claim 1, wherein transmitting the backlight control command to the backlight chip according to the screen identifier comprises: when the backlight control instruction is a backlight brightness adjustment instruction automatically triggered by a system, transmitting the screen parameters to an operation node of an abstract layer according to the screen identifier in the backlight control instruction;
the operation node transmits the generated operation data to the kernel driving layer through the framework layer; the kernel driving layer controls the pulse width modulation signal by reading and writing the backlight control chip register so as to adjust the backlight brightness.
5. The method of any of claims 1 to 4, wherein prior to receiving the backlight control instruction, the method further comprises: setting the screen parameters corresponding to each screen in advance according to each screen identifier;
and initializing each screen according to each screen identifier and each screen parameter corresponding to the screen identifier.
6. A screen backlight control device for implementing the method of any one of claims 1 to 5, the device being connected to backlight chips of at least two screens via a multiplex communication interface, the device comprising:
the receiving unit is used for receiving backlight control instructions of backlight chips of the at least two screens;
and the control unit is used for transmitting the backlight control instruction to a backlight chip of a corresponding screen according to the screen identifier in the backlight control instruction so that the backlight chip adjusts the screen parameters of the screen according to the backlight control instruction.
7. The apparatus according to claim 6, wherein the backlight control command is a backlight brightness adjustment command, or the backlight control command is a backlight wake-up command, or the backlight control command is a backlight sleep command.
8. The apparatus according to claim 6, wherein the control unit transmits the backlight control instruction to a backlight chip of a corresponding screen according to the screen identifier in the backlight control instruction, and is specifically configured to:
when the backlight control instruction is a backlight brightness adjusting instruction manually triggered by a user, transmitting the acquired screen parameters to a kernel driving layer through a frame layer according to the screen identification in the backlight control instruction;
the kernel driving layer controls the pulse width modulation signal by reading and writing the backlight control chip register so as to adjust the backlight brightness.
9. The apparatus according to claim 6, wherein the control unit transmits the backlight control instruction to a backlight chip of a corresponding screen according to the screen identifier in the backlight control instruction, and is specifically configured to: when the backlight control instruction is a backlight brightness adjustment instruction automatically triggered by a system, transmitting the acquired screen parameters to an operation node of an abstract layer according to the screen identifier in the backlight control instruction;
the operation node transmits the generated operation data to the kernel driving layer through the frame layer, and the kernel driving layer controls the pulse width modulation signal in a mode of reading and writing the backlight control chip register so as to adjust the backlight brightness.
10. The apparatus of claim 6, wherein the receiving unit, before receiving the backlight control instruction of the backlight chips of the at least two screens, the control unit is further configured to:
setting the screen parameters corresponding to each screen in advance according to the screen identification of each screen;
and initializing each screen according to each screen identifier and each screen parameter corresponding to the screen identifier.
11. A terminal, comprising a processor and a memory, wherein the memory is configured to store one or more computer programs; one or more computer programs stored in the memory that, when executed by the processor, enable the terminal to implement the method of any of claims 1 to 5.
12. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the method of any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210468214.6A CN114898715A (en) | 2022-04-29 | 2022-04-29 | Screen backlight control method, device, terminal and medium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210468214.6A CN114898715A (en) | 2022-04-29 | 2022-04-29 | Screen backlight control method, device, terminal and medium |
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| CN114898715A true CN114898715A (en) | 2022-08-12 |
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| CN202210468214.6A Pending CN114898715A (en) | 2022-04-29 | 2022-04-29 | Screen backlight control method, device, terminal and medium |
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