CN113823230B - Backlight control method and device, storage medium and display device - Google Patents
Backlight control method and device, storage medium and display device Download PDFInfo
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- CN113823230B CN113823230B CN202111112847.5A CN202111112847A CN113823230B CN 113823230 B CN113823230 B CN 113823230B CN 202111112847 A CN202111112847 A CN 202111112847A CN 113823230 B CN113823230 B CN 113823230B
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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
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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
- G09G2320/0247—Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes
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Abstract
The application discloses a backlight control method, a device, a storage medium and a display device, wherein when an image field frequency signal sent by a core is updated, a backlight field frequency signal is sent to a drive plate drive chip by a drive plate main control chip according to a historical sending period of the image field frequency signal before updating, and when the sending period of the image field frequency signal is updated, the backlight field frequency signal sent to the drive plate drive chip is adjusted by the drive plate main control chip according to the sending period of the image field frequency signal after updating of the core.
Description
Technical Field
The application relates to the technical field of display, in particular to a backlight control method, a backlight control device, a storage medium and display equipment.
Background
In recent years, display devices having an image display function, such as televisions, computers, and smart phones, have been widely used. When the display device displays pictures, the transmission cycle of the backlight field frequency signals sent by the drive board main control chip to the drive board driving chip is the transmission cycle of the image field frequency signals sent by the following machine core.
In the related art, when the transmission period of the image field frequency signal changes, the transmission period of the backlight field frequency signal sent by the drive board main control chip to the drive board drive chip changes correspondingly along with the change of the transmission period of the image field frequency signal sent by the movement, and the current data provided by the drive board drive chip to the backlight causes that the drive board drive chip cannot provide the current data adaptive to the updated transmission period of the backlight field frequency signal in time due to the delay of the current data provided by the drive board drive chip to cause the backlight to flicker, so that the display effect of the display picture of the display device is poor.
Disclosure of Invention
The embodiment of the application provides a backlight control method and device, a storage medium and a display device, which can improve the display effect of a display picture of the display device.
In a first aspect, an embodiment of the present application provides a backlight control method, which is applied to a display device, where the display device includes a movement, a drive board main control chip, and a drive board drive chip, and includes:
receiving, by the drive board main control chip, update indication information indicating an image field frequency signal sent by the movement, where the update indication information is used to indicate the movement to update a sending period of the image field frequency signal;
in the process that the core updates the sending period of the image field frequency signals, sending backlight field frequency signals to the drive board drive chip through the drive board main control chip according to the historical sending period of the image field frequency signals before the core is updated;
when the movement completes the updating of the sending period of the image field frequency signals, the backlight field frequency signals sent to the driving board driving chip are adjusted through the driving board main control chip according to the sending period of the image field frequency signals after the movement is updated.
In a second aspect, an embodiment of the present application further provides a backlight control device, which is applied to a display device, where the display device includes a movement, a driving board main control chip and a driving board driving chip, and includes:
the receiving module is used for receiving updating indication information which indicates the image field frequency signals and is sent by the machine core through the driving board main control chip, and the updating indication information is used for indicating the machine core to update the sending period of the image field frequency signals;
the sending module is used for sending a backlight field frequency signal to the driving board driving chip through the driving board main control chip according to the historical sending period of the image field frequency signal before the movement is updated in the process that the movement updates the sending period of the image field frequency signal;
and the synchronization module is used for adjusting and sending the backlight field frequency signal to the drive board drive chip through the drive board main control chip according to the sending period of the image field frequency signal after the updating of the core when the core completes the updating of the sending period of the image field frequency signal.
In a third aspect, embodiments of the present application further provide a computer-readable storage medium, on which a computer program is stored, and when the computer program runs on a processor, the computer program is enabled to execute the backlight control method provided in any embodiment of the present application.
In a fourth aspect, an embodiment of the present application further provides a display device, including a processor and a memory, where the memory has a computer program, and the processor is configured to execute the backlight control method according to any embodiment of the present application by calling the computer program.
According to the technical scheme, when the image field frequency signal sent by the movement is updated, the backlight field frequency signal is sent to the drive plate driving chip through the drive plate main control chip according to the historical sending period of the image field frequency signal before updating, and when the sending period of the image field frequency signal is updated, the backlight field frequency signal sent to the drive plate driving chip is adjusted through the drive plate main control chip according to the sending period of the image field frequency signal after updating of the movement, so that backlight flicker caused by the fact that the drive plate driving chip cannot timely provide current data for backlight adaptation due to the fact that the sending period of the backlight field frequency signal sent by the drive plate main control chip to the drive plate driving chip is immediately changed along with the change of the sending period of the backlight field frequency signal sent by the movement can be avoided when the image field frequency signal sent by the movement is updated, and therefore the display effect of a display picture of display equipment is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a first flowchart of a backlight control method according to an embodiment of the present disclosure.
Fig. 2 is a schematic working diagram of a movement, a driving board main control chip, and a driving board driving chip when a sending cycle of an image field frequency signal in a backlight control method provided in an embodiment of the present application is not updated.
Fig. 3 is a second flowchart of a backlight control method according to an embodiment of the present disclosure.
Fig. 4 is a timing diagram corresponding to an application scenario provided by the backlight control method according to the embodiment of the present application.
Fig. 5 is a schematic structural diagram of a backlight control device according to an embodiment of the present application.
Fig. 6 is a schematic structural diagram of a display device according to an embodiment of the present application.
Fig. 7 is a schematic structural diagram of a second display device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without inventive step, are within the scope of the present application.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The embodiment of the present application provides a backlight control method, where an execution main body of the backlight control method may be the backlight control device provided in the embodiment of the present application, or an electronic device integrated with the backlight control device, where the backlight control device may be implemented in a hardware or software manner. The electronic device may be a smart phone, a tablet computer, a palm computer, a notebook computer, or a desktop computer.
Referring to fig. 1, fig. 1 is a first flowchart illustrating a backlight control method according to an embodiment of the disclosure. The backlight control method can be applied to display equipment, the display equipment can comprise a movement, a drive board main control chip and a drive board drive chip, and the specific flow of the backlight control method can comprise the following steps:
101. and receiving update indication information of the indication image field frequency signal sent by the movement through the main control chip of the driving board, wherein the update indication information is used for indicating the sending period of the update image field frequency signal of the movement.
The image field frequency refers to the number of times of picture refreshing per second, i.e. the image refreshing rate, and the unit is hertz. The backlight field frequency refers to the number of backlight refreshes per second, i.e. the backlight refresh rate, in hertz. It is understood that the transmission period of the image field frequency signal is the inverse of the image refresh rate, and the transmission period of the backlight field frequency signal is the inverse of the backlight refresh rate.
In recent years, display devices having an image display function, such as televisions, computers, and smart phones, have been widely used. When the display device displays images, the transmission period of the backlight field frequency signals sent to the drive board drive chip by the drive board main control chip is the transmission period of the image field frequency signals sent by the following machine core. It should be noted that, the sending period of the backlight field frequency signal follows the sending period of the image field frequency signal, which means that the image field frequency signal generates a signal pulse at a certain time, the backlight field frequency signal generates a signal pulse at the certain time, and the time between two signal pulses is the sending period of the corresponding field frequency signal.
Referring to fig. 2, fig. 2 is a schematic working diagram of a movement, a driving board main control chip and a driving board driving chip when a transmission cycle of an image field frequency signal is not updated according to the backlight control method provided in the embodiment of the present application. When the display device displays images, the image field frequency signals and the corresponding image data are sent to the drive board main control chip through the movement, and after the drive board main control chip receives the image field frequency signals and the image data sent by the movement, the drive board main control chip sends the backlight field frequency signals corresponding to the image field frequency signals and synchronous with the image field frequency signals to the drive board driving chip and sends corresponding backlight current data according to the image data. Specifically, the method comprises the following steps:
the time sequence of the signals sent by the movement is as follows: sending out image field frequency signal 0- > sending out image data 0- > sending out image field frequency signal 1- > sending out image data 1- > sending out field frequency signal 2- > sending out image data 2; so as to circulate;
the corresponding signal time sequence of the main control chip of the drive board is as follows: receiving an image field frequency signal 0- > sending a backlight field frequency signal 0- > receiving image data 0- > sending backlight current data 0- > receiving an image field frequency signal 1- > sending a backlight field frequency signal 1- > receiving image data 1- > sending backlight current data 1- > receiving an image field frequency signal 2- > sending a backlight field frequency signal 2- > receiving image data 2- > sending backlight current data 2;
the driving board drives the chip response signal time sequence; receiving a backlight field frequency signal 0- > responding to the last frame current data- > receiving backlight current data- > receiving a backlight field frequency signal 1- > responding to the backlight current data 0- > receiving backlight current data 1- > receiving a backlight field frequency signal 2- > responding to the backlight current data 1- > receiving backlight current data 2;
the current data provided by the driving board driving chip to the backlight is obtained by the field frequency provided by the scanner core, and the scanning requires at least one frame time, so that the current data (including instantaneous current and duty ratio) of the previous frame can be displayed by the driving board driving chip obtaining the field frequency of each frame, namely, the field frequency signal and the current signal are delayed.
In the related art, when the transmission period of the image field frequency signal changes, the transmission period of the backlight field frequency signal sent by the drive board main control chip to the drive board drive chip changes correspondingly with the change of the transmission period of the image field frequency signal sent by the movement, and the current data provided by the drive board drive chip to the backlight has the delay, so that the drive board drive chip cannot provide the current data adaptive to the updated transmission period of the backlight field frequency signal in time, and the backlight flickers.
The embodiment of the application provides a backlight control method which can enable the backlight not to flicker when the sending period of the image field frequency signal sent by the movement is updated, so as to solve the problems.
In this embodiment of the application, when an image field frequency signal is to be updated, the core sends update indication information indicating the image field frequency signal to the drive board main control chip, the drive board main control chip receives the update indication information indicating the image field frequency signal sent by the core, and the update indication information is used for indicating a sending period of the core for updating the image field frequency signal.
102. And in the process of the sending period of the image field frequency signals updated by the movement, sending the backlight field frequency signals to the driving board driving chip by the driving board main control chip according to the historical sending period of the image field frequency signals before the movement is updated.
In the embodiment of the present application, when the image field frequency signal changes, the backlight field frequency signal does not immediately follow the change of the image field frequency signal, but deviates from the image field frequency signal. The backlight field frequency signal is separated from the image field frequency signal, that is, the image field frequency signal sent by the movement generates a signal pulse at a certain moment, and the backlight field frequency signal sent by the driving board main control chip to the driving board driving chip can generate the signal pulse according to the self condition instead of generating the signal pulse at the moment. Specifically, in the process of updating the sending period of the image field frequency signal by the movement in the embodiment of the present application, the driving board main control chip sends the backlight field frequency signal to the driving board driving chip according to the historical sending period of the image field frequency signal before the movement is updated, that is, the backlight field frequency signal keeps the original sending period unchanged.
103. When the machine core finishes the updating of the sending period of the image field frequency signals, the backlight field frequency signals sent to the driving board driving chip are adjusted through the driving board main control chip according to the sending period of the image field frequency signals after the machine core is updated.
It should be noted that, when the core completes updating the transmission period of the image field frequency signal, that is, the transmission period of the image field frequency signal is stabilized at a fixed transmission period. For example, before the video field frequency signal is not updated, the video field frequency is 60HZ, and the transmission period is 1/60s, and when the video field frequency is to be updated to 50HZ, that is, the transmission period is to be updated to 1/50s, the video field frequency is not directly updated to stable 50HZ, but an intermediate state field frequency exists, and a field frequency smaller than 60HZ and larger than 50HZ will occur in a short time, that is, a transmission period larger than 1/60s and smaller than 1/50s will occur in a short time. When the sending period of the image field frequency is stabilized at 1/50s, it can be said that the updating of the sending period of the image field frequency signal is completed.
In the embodiment of the application, when the movement completes the update of the sending period of the image field frequency signal, the driving board main control chip adjusts the backlight field frequency signal sent to the driving board driving chip according to the sending period of the image field frequency signal after the movement is updated, so that the sending period of the backlight field frequency signal follows the sending period of the image field frequency signal again.
In particular implementation, the present application is not limited by the execution sequence of the described steps, and some steps may be performed in other sequences or simultaneously without conflict.
It can be known from the above that, in the backlight control method provided in this embodiment, when an image field frequency signal sent by a movement is updated, a backlight field frequency signal is sent to a drive board drive chip by a drive board main control chip according to a historical sending period of the image field frequency signal before updating, and when the sending period of the image field frequency signal is updated, the backlight field frequency signal sent to the drive board drive chip is adjusted by the drive board main control chip according to a sending period of the image field frequency signal after updating of the movement, so that when the image field frequency signal sent by the movement is updated, the sending period of the backlight field frequency signal sent by the drive board main control chip to the drive board drive chip is immediately changed with the movement, so that the drive board drive chip cannot provide backlight-adaptive current data in time to cause backlight flicker. According to the method and the device, when the machine core completes the updating of the sending period of the image field frequency signal, the backlight field frequency signal is adjusted, the response time of the current data matched with the adjusted backlight is provided for the drive board driving chip, so that the current data matched with the backlight can be provided for the drive board driving chip all the time when the image field frequency signal is switched to the whole drive board driving chip, the backlight is enabled not to flicker, and therefore the display effect of the display picture of the display device can be improved.
The method according to the preceding embodiment is illustrated in further detail below by way of example.
Referring to fig. 3, fig. 3 is a second flow chart of a backlight control method according to an embodiment of the present disclosure. The backlight control method can be applied to display equipment, the display equipment can comprise a movement, a drive board main control chip and a drive board drive chip, and the specific flow of the backlight control method can also comprise the following steps:
201. and receiving updating indication information of the indication image field frequency signals sent by the machine core through the main control chip of the driving board, wherein the updating indication information is used for indicating the sending period of the updated image field frequency signals of the machine core.
The image field frequency refers to the number of times of picture refreshing per second, i.e. the image refreshing rate, and the unit is hertz. The backlight field frequency refers to the number of backlight refreshes per second, i.e. the backlight refresh rate, in hertz. It is understood that the transmission period of the image field frequency signal is the inverse of the image refresh rate, and the transmission period of the backlight field frequency signal is the inverse of the backlight refresh rate.
In this embodiment of the application, when an image field frequency signal is to be updated, the core sends update indication information indicating the image field frequency signal to the drive board main control chip, and the drive board main control chip receives the update indication information indicating the image field frequency signal sent by the core. The updating indication information is used for indicating the sending period of the image field frequency updating signal of the movement.
For example, when the current 1/60s transmission cycle is updated to the 1/50s transmission cycle in the next transmission cycle in the transmission cycle of the image field frequency signals, the core of the display device transmits update indication information indicating the image field frequency signals to the drive board main control chip within the current cycle time, and the drive board main control chip receives the update indication information indicating the image field frequency signals transmitted by the core.
202. And in the process of updating the sending period of the image field frequency signals of the movement, sending the backlight field frequency signals to the driving board driving chip by the driving board main control chip according to the historical sending period of the image field frequency signals before the movement is updated.
For example, the transmission period of the image field frequency signal and the transmission period of the backlight field frequency are both 1/60s. In the process of updating the image field frequency signal from the current 1/60s sending period to the 1/50s sending period, the sending period of the image field frequency signal can be a sending period which is more than 1/60s and less than 1/50s in a short time, and in the process, the backlight field frequency signal is sent to the driving board driving chip through the driving board main control chip according to the historical sending period of the image field frequency signal before the updating of the movement, so that the backlight field frequency signal keeps the original sending period 1/60s unchanged.
It should be noted that, at this time, the transmission period of the backlight field frequency signal remains unchanged, and the current data provided by the driving board driving chip to the backlight also remains unchanged, that is, the instantaneous current and the duty ratio both remain unchanged.
203. And when detecting that at least N sending periods exist in the sending period of the image field frequency signal as a target updating sending period, determining that the sending period of the image field frequency signal is updated by the movement, wherein N is a positive integer greater than 1.
Wherein, the update indication information carries the target update sending period of the image field frequency signal. For example, the image field frequency signal is updated from 1/60s to 1/50s, and the target update transmission period is 1/50s.
For example, referring to fig. 4, when n is 2, in the process of updating the image field frequency signal from the 1/60s transmission period to 1/50s, when it is detected that 2 transmission periods of the image field frequency signal are 1/50s, it can be determined that the transmission period of the image field frequency signal is stable, and the updating of the transmission period of the core to the image field frequency signal is completed.
204. When the movement completes the updating of the sending period of the image field frequency signal, the backlight field frequency signal sent to the driving board driving chip is adjusted through the driving board main control chip according to the sending period of the image field frequency signal after the movement is updated.
In this embodiment of the application, the start time of the nth transmission period is used as the update completion time when the core completes the transmission period of the image field frequency signal, and the end time of the nth transmission period is used as the target synchronization time when the backlight field frequency signal sent by the main control chip of the drive board to the drive board driving chip and the image field frequency signal updated by the core are synchronized.
Wherein, the update completion time is the time when the machine core completes the update of the sending period of the image field frequency signal. The target synchronization time is the time when the backlight field frequency signal follows the updated image field frequency signal after the sending period of the image field frequency signal is updated.
For example, referring to fig. 4, if n is 2, the update completion time is t1, and the target synchronization time is t2.
In this embodiment of the application, when the backlight field frequency signal sent to the driver board driving chip is adjusted by the driver board main control chip according to the sending period of the image field frequency signal after the updating of the movement, the method may include the following steps:
(1) Determining a compensation sending period required by synchronization of the backlight field frequency signal and the updated image field frequency signal according to the updating completion time, the target synchronization time and the historical sending period;
for example, referring to fig. 4, when the core completes updating the sending period of the image field frequency signal, the phase offset between the backlight field frequency signal and the updated image field frequency signal can be obtained to calculate the compensated sending period: the phase offset T3= T1-T2, the backoff transmission period is 1/T3s.
Wherein, T1 and T2 can be obtained by a system beat function.
(2) And adjusting the sending period of the backlight field frequency signal sent by the main control chip of the driving board to the driving chip of the driving board according to the compensation sending period.
For example, in the embodiment of the present application, a target time interval for sending the compensation sending period may be determined according to the update completion time, the target synchronization time, and the historical sending period, and in the target time interval, the driving board main control chip sends the backlight field frequency signal to the driving board driving chip according to the compensation sending period.
The target time interval corresponds to a time interval of phase offsets of the backlight field frequency signal and the updated image field frequency signal.
For example, referring to fig. 4, the target time interval is [ T3, T2], and in [ T3, T2], the driving board main control chip sends the backlight field frequency signal to the driving board driving chip according to the sending period of 1/T3s. For example, if T3 is measured to be equal to 1/55s, the driving board main control chip sends a backlight field frequency signal to the driving board driving chip according to a sending period of 1/55s within [ T3, T2 ].
In an embodiment, the compensation transmission period may be further decomposed into T4 and T5, that is, T3= T4+ T5, and in [ T3, T2], the driving board main control chip transmits the backlight field frequency signal to the driving board driving chip once according to the transmission period of 1/T4s, and then transmits the backlight field frequency signal to the driving board driving chip once according to the transmission period of 1/T5 s. Of course, there are many ways to compensate for the backlight field frequency signal.
It should be noted that, when the driving board main control chip sends the backlight field frequency signal to the driving board driving chip according to the compensation sending period, the current data provided by the driving board driving chip to the backlight is all adapted to the corresponding backlight field frequency signal.
In this embodiment of the application, after adjusting the transmission period of the backlight signal sent by the driving board main control chip to the driving board driving chip according to the compensation transmission period, the method may further include the following steps:
and at the target synchronization moment, sending a backlight field frequency signal to the drive board drive chip through the drive board main control chip according to the sending period of the image field frequency signal after the movement is updated.
Wherein, in the process of updating the sending period of the image field frequency signal and in the process of switching the sending period of the backlight field frequency signal to be synchronous with the sending period of the updated image field frequency signal, the image frames displayed by the display picture of the display device are repeatedly displayed in the same piece.
For example, referring to fig. 4, at time t2, the transmission period of the backlight field frequency signal follows the transmission period of the updated image field frequency signal.
In the embodiment of the present application, when the backlight field frequency signal is synchronized with the image field frequency signal, the backlight field frequency is M times of the image field frequency, and M is a positive integer, that is, the reciprocal of the transmission period of the backlight field frequency signal is M times of the reciprocal of the transmission period of the image field frequency signal.
As can be seen from the above, in the backlight control method provided in this embodiment of the application, when the image field frequency signal sent by the movement is updated, the driving board main control chip sends the backlight field frequency signal to the driving board driving chip according to the historical sending period of the image field frequency signal before updating, and when the sending period of the image field frequency signal is updated, the driving board main control chip adjusts the backlight field frequency signal sent to the driving board driving chip according to the sending period of the image field frequency signal after updating of the movement, so as to avoid backlight flicker caused by the fact that the driving board driving chip cannot timely provide the backlight-adapted current data due to the fact that the sending period of the backlight field frequency signal sent by the driving board main control chip to the driving board driving chip is immediately changed when the image field frequency signal sent by the movement is updated. According to the method and the device, when the machine core completes the updating of the sending period of the image field frequency signal, the backlight field frequency signal is adjusted, the response time of the current data matched with the adjusted backlight is provided for the drive board driving chip, so that the current data matched with the backlight can be provided for the drive board driving chip all the time when the image field frequency signal is switched to the whole drive board driving chip, the backlight is enabled not to flicker, and therefore the display effect of the display picture of the display device can be improved.
In one embodiment, a backlight control device is also provided. Referring to fig. 5, fig. 5 is a schematic structural diagram of a backlight control device 300 according to an embodiment of the present disclosure. The backlight control apparatus 300 is applied to a display device, and the backlight control apparatus 300 includes a receiving module 301, a sending module 302, and an adjusting module 303, as follows:
the receiving module 301 is configured to receive, through the drive board main control chip, update indication information indicating an image field frequency signal sent by the core, where the update indication information is used to indicate a sending period of the core update image field frequency signal;
a sending module 302, configured to send, by the driver board main control chip, a backlight field frequency signal to the driver board driver chip according to a historical sending period of an image field frequency signal before core update in a process of a sending period of a core update image field frequency signal;
and the adjusting module 303 is configured to adjust, by the drive board main control chip according to the transmission period of the image field frequency signal after the movement is updated, to send the backlight field frequency signal to the drive board drive chip when the movement completes the update of the transmission period of the image field frequency signal.
In one embodiment, the backlight control apparatus further includes a determination module. The determining module 304 may be configured to determine that the updating of the sending period of the image field frequency signal by the core is completed when it is detected that at least N sending periods exist as the target updating sending period of the image field frequency signal, where N is a positive integer greater than 1.
In an embodiment, the adjusting module 303 may be configured to determine, according to the update completion time, the target synchronization time, and the historical sending period, a compensation sending period required for synchronizing the backlight field frequency signal with the updated image field frequency signal; and adjusting the transmission period of the backlight field frequency signal transmitted to the driving chip of the driving board by the main control chip of the driving board according to the compensation transmission period.
In one embodiment, the adjusting module 303 may be configured to determine a target time interval of the transmission compensation transmission period according to the update completion time, the target synchronization time, and the historical transmission period; and in the target time interval, the driving board main control chip sends a backlight field frequency signal to the driving board driving chip according to the compensation sending period.
In an embodiment, after adjusting the transmission period of the backlight signal sent by the driver board main control chip to the driver board driving chip according to the compensation transmission period, the adjusting module 303 may be further configured to send the backlight field frequency signal to the driver board driving chip through the driver board main control chip according to the transmission period of the image field frequency signal after the core is updated at the target synchronization time.
It should be noted that the backlight control device provided in the embodiment of the present application and the backlight control method in the foregoing embodiments belong to the same concept, and any method provided in the embodiment of the backlight control method can be implemented by the backlight control device, and the specific implementation process thereof is described in detail in the embodiment of the backlight control method, and is not described herein again.
The embodiment of the application also provides a display device. The display device may be an electronic device such as a smartphone or a tablet computer. Referring to fig. 6, fig. 6 is a schematic structural diagram of a display device according to an embodiment of the present disclosure. The display device 400 includes a processor 401 and a memory 402. The processor 401 is electrically connected to the memory 402.
The processor 401 is a control center of the display apparatus 400, connects various parts of the entire display apparatus using various interfaces and lines, performs various functions of the display apparatus and processes data by running or calling a computer program stored in the memory 402 and calling data stored in the memory 402, thereby performing overall monitoring of the display apparatus.
In this embodiment, the processor 401 in the display device 400 loads instructions corresponding to one or more processes of the computer program into the memory 402 according to the following steps, and the processor 401 runs the computer program stored in the memory 402, so as to implement various functions:
receiving updating indication information of an indication image field frequency signal sent by the machine core through a main control chip of the driving board, wherein the updating indication information is used for indicating the sending period of the update image field frequency signal of the machine core;
in the process of sending a core update image field frequency signal, sending a backlight field frequency signal to a drive board drive chip through the drive board main control chip according to a historical sending period of the image field frequency signal before core update;
when the machine core finishes the updating of the sending period of the image field frequency signals, the backlight field frequency signals sent to the driving board driving chip are adjusted through the driving board main control chip according to the sending period of the image field frequency signals after the machine core is updated.
In an implementation manner, please refer to fig. 7, and fig. 7 is a second structural diagram of a display device according to an embodiment of the present disclosure. The display device 400 further includes: radio frequency circuit 403, display 404, control circuit 405, input unit 406, audio circuit 407, sensor 408, and power supply 409. The processor 401 is electrically connected to the radio frequency circuit 403, the display 404, the control circuit 405, the input unit 406, the audio circuit 407, the sensor 408, and the power source 409.
The radio frequency circuit 403 is used for transceiving radio frequency signals to communicate with a network device or other display device through wireless communication.
The display screen 404 may be used to display information entered by or provided to the user as well as various graphical user interfaces of the display device, which may be comprised of images, text, icons, video, and any combination thereof.
The control circuit 405 is electrically connected to the display screen 404, and is configured to control the display screen 404 to display information.
The input unit 406 may be used to receive input numbers, character information, or user characteristic information (e.g., fingerprint), and to generate keyboard, mouse, joystick, optical, or trackball signal inputs related to user settings and function control. The input unit 406 may include a fingerprint recognition module.
The audio circuit 407 may provide an audio interface between the user and the display device through a speaker, microphone. Wherein the audio circuit 407 comprises a microphone. The microphone is electrically connected to the processor 401. The microphone is used for receiving voice information input by a user.
The sensor 408 is used to collect external environmental information. The sensors 408 may include one or more of ambient light sensors, acceleration sensors, gyroscopes, etc.
The power supply 409 is used to supply power to the various components of the display device 400. In one embodiment, power source 409 may be logically coupled to processor 401 via a power management system, such that functions such as managing charging, discharging, and power consumption may be performed via the power management system.
Although not shown in the drawings, the display device 400 may further include a camera, a bluetooth module, and the like, which are not described in detail herein.
In this embodiment, the processor 401 in the display device 400 loads instructions corresponding to one or more processes of the computer program into the memory 402 according to the following steps, and the processor 401 runs the computer program stored in the memory 402, so as to implement various functions:
receiving updating indication information of an indication image field frequency signal sent by the machine core through a main control chip of the driving board, wherein the updating indication information is used for indicating the sending period of the update image field frequency signal of the machine core;
in the process of sending a core update image field frequency signal, sending a backlight field frequency signal to a drive board drive chip through the drive board main control chip according to a historical sending period of the image field frequency signal before core update;
when the movement completes the updating of the sending period of the image field frequency signal, the backlight field frequency signal sent to the driving board driving chip is adjusted through the driving board main control chip according to the sending period of the image field frequency signal after the movement is updated.
In an embodiment, the update indication information carries a target update sending period of the image field frequency signal, and before the processor 401 performs adjusting, by the drive board main control chip, the backlight field frequency signal sent to the drive board drive chip according to the sending period of the image field frequency signal after the movement is updated, the processor may further perform: and when detecting that at least N sending periods exist in the sending period of the image field frequency signal as a target updating sending period, determining that the sending period of the image field frequency signal is updated by the movement, wherein N is a positive integer greater than 1.
In one embodiment, taking a start time of an nth transmission period as an update completion time when the core completes a transmission period of the image field frequency signal, and taking an end time of the nth transmission period as a target synchronization time when the driver board main control chip sends the backlight field frequency signal to the driver board driving chip and the core updated image field frequency signal, when the processor 401 executes adjusting, by the driver board main control chip, the backlight field frequency signal sent to the driver board driving chip according to the transmission period of the core updated image field frequency signal, the processor may execute: determining a compensation sending period required by synchronization of the backlight field frequency signal and the updated image field frequency signal according to the updating completion time, the target synchronization time and the historical sending period; and adjusting the transmission period of the backlight field frequency signal transmitted to the driving chip of the driving board by the main control chip of the driving board according to the compensation transmission period.
In one embodiment, when performing adjusting the transmission period of the backlight signal sent by the driver board main control chip to the driver board driving chip according to the compensation transmission period, the processor 401 may perform: determining a target time interval of a transmission compensation transmission period according to the updating completion time, the target synchronization time and the historical transmission period; and in the target time interval, the driving board main control chip sends a backlight field frequency signal to the driving board driving chip according to the compensation sending period.
In one embodiment, after the processor 401 performs adjusting the transmission period of the backlight signal sent by the driver board main control chip to the driver board driving chip according to the compensation transmission period, the processor may further perform: and at the target synchronization moment, sending a backlight field frequency signal to the drive board drive chip through the drive board main control chip according to the sending period of the image field frequency signal after the movement is updated.
The embodiments of the present application further provide a computer-readable storage medium, in which a computer program is stored, and when the computer program runs on a processor, the computer executes the backlight control method according to any one of the embodiments.
It should be noted that, persons skilled in the art can understand that all or part of the steps in the various methods of the foregoing embodiments can be implemented by hardware related to instructions of a computer program, and the computer program can be stored in a computer-readable storage medium, which can include but is not limited to: read Only Memory (ROM), random Access Memory (RAM), magnetic or optical disks, and the like.
In addition, the terms "first", "second", and "third", etc. in this application are used to distinguish different objects, and are not used to describe a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or modules is not limited to only those steps or modules listed, but rather, some embodiments may include other steps or modules not listed or inherent to such process, method, article, or apparatus.
The backlight control method, the backlight control device, the storage medium and the display apparatus provided in the embodiments of the present application are described in detail above. The principle and the embodiment of the present application are explained by applying specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (8)
1. A backlight control method is applied to display equipment, wherein the display equipment comprises a movement, a drive board main control chip and a drive board drive chip, and the backlight control method is characterized by comprising the following steps:
receiving, by the drive board main control chip, update indication information indicating an image field frequency signal sent by the core, where the update indication information is used to indicate a sending period in which the core updates the image field frequency signal, and the update indication information carries a target update sending period of the image field frequency signal;
in the process that the core updates the sending period of the image field frequency signals, sending backlight field frequency signals to the drive board drive chip through the drive board main control chip according to the historical sending period of the image field frequency signals before the core is updated;
when detecting that at least N sending periods exist in the sending period of the image field frequency signal as the target updating sending period, determining that the sending period of the image field frequency signal is updated by the movement, wherein N is a positive integer greater than 1;
when the movement completes the updating of the sending period of the image field frequency signals, the backlight field frequency signals sent to the driving board driving chip are adjusted through the driving board main control chip according to the sending period of the image field frequency signals after the movement is updated.
2. The backlight control method according to claim 1, wherein a start time of an nth transmission cycle is used as an update completion time when the core completes a transmission cycle of the image field frequency signal, and an end time of the nth transmission cycle is used as a target synchronization time when a backlight field frequency signal sent by the driver board main control chip to the driver board driving chip and the image field frequency signal after the core is updated, and the backlight field frequency signal sent to the driver board driving chip is adjusted by the driver board main control chip according to the transmission cycle of the image field frequency signal after the core is updated, including:
determining a compensation sending period required by synchronization of a backlight field frequency signal and the updated image field frequency signal according to the updating completion time, the target synchronization time and the historical sending period;
and adjusting the sending period of the backlight field frequency signal sent by the driving board main control chip to the driving board driving chip according to the compensation sending period.
3. The backlight control method according to claim 2, wherein the adjusting the transmission period of the backlight signal sent by the driving board main control chip to the driving board driving chip according to the compensation transmission period comprises:
determining a target time interval for sending the compensation sending period according to the updating completion time, the target synchronization time and the historical sending period;
and in the target time interval, the driving board main control chip sends a backlight field frequency signal to the driving board driving chip according to the compensation sending period.
4. The backlight control method of claim 2, further comprising, after adjusting a transmission period of the backlight signal transmitted from the driver board main control chip to the driver board driving chip according to the backoff transmission period:
and at the target synchronization moment, sending a backlight field frequency signal to the drive board drive chip through the drive board main control chip according to the sending period of the image field frequency signal updated by the movement.
5. The backlight control method of claim 1, wherein when the backlight field frequency signal is synchronized with the image field frequency signal, a reciprocal of a transmission period of the backlight field frequency signal is M times the reciprocal of the transmission period of the image field frequency signal, M being a positive integer.
6. The utility model provides a controlling means is shaded, is applied to display device, display device includes core, drive plate main control chip and drive plate drive chip, its characterized in that includes:
the receiving module is used for receiving update indication information which indicates the image field frequency signals and is sent by the machine core through the drive board main control chip, wherein the update indication information is used for indicating the machine core to update the sending period of the image field frequency signals, and the update indication information carries the target update sending period of the image field frequency signals;
the sending module is used for sending a backlight field frequency signal to the driving board driving chip through the driving board main control chip according to the historical sending period of the image field frequency signal before the movement is updated in the process that the movement updates the sending period of the image field frequency signal;
the determining module is used for determining that the updating of the sending period of the image field frequency signal by the movement is completed when detecting that at least N sending periods exist in the sending period of the image field frequency signal as the target updating sending period, wherein N is a positive integer greater than 1;
and the adjusting module is used for adjusting the sending period of the image field frequency signals to send the backlight field frequency signals to the driving board driving chip through the driving board main control chip according to the sending period of the image field frequency signals after the updating of the movement when the movement completes the updating of the sending period of the image field frequency signals.
7. A computer-readable storage medium, on which a computer program is stored, which, when run on a processor, causes the computer to carry out the backlight control method according to any one of claims 1 to 5.
8. A display device comprising a processor and a memory, said memory storing a computer program, characterized in that said processor is adapted to perform the backlight control method according to any of claims 1 to 5 by invoking said computer program.
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