CN111128082B - Backlight adjusting method, display and storage medium - Google Patents
Backlight adjusting method, display and storage medium Download PDFInfo
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- CN111128082B CN111128082B CN201911425901.4A CN201911425901A CN111128082B CN 111128082 B CN111128082 B CN 111128082B CN 201911425901 A CN201911425901 A CN 201911425901A CN 111128082 B CN111128082 B CN 111128082B
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- 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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Abstract
The invention discloses a backlight adjusting method, a display and a storage medium. The method comprises the steps of detecting whether the current operation is the operation of entering a homepage, or the operation of switching between information sources, switching an information channel in the information source or switching from the homepage to the information source; if the current time is the same as the current time, acquiring an image or video refreshing frequency corresponding to the homepage; if the current channel is the same as the target channel, inserting a black field with a preset frame number, and acquiring an image or video refreshing frequency corresponding to a switched target information source or target channel; and setting backlight parameters according to the acquired image or video refreshing frequency, and adjusting the backlight according to the backlight parameters. When the homepage is accessed, the backlight parameters are set according to the image or video refreshing frequency corresponding to the homepage and backlight adjustment is carried out, and when the information sources are switched, the channels in the information sources are switched or the homepage is switched to the information sources, black field insertion processing is carried out on the target information sources or the target channels, so that the light transmittance during switching is reduced, flickering caused by poor image backlight brightness is effectively avoided, and the user experience of products is improved.
Description
Technical Field
The invention relates to the technical field of liquid crystal display, in particular to a backlight adjusting method, a display and a storage medium.
Background
With the development of television sets, backlight technology is continuously advanced and updated. Among them, Local Dimming (Local backlight adjustment) technology has been widely used in display products because it can improve contrast, improve image quality, and save energy consumption to a certain extent.
The principle of Local Dimming applied to a liquid crystal display is that, generally, when a System on Chip (SoC) transmits an image or a video, a luminance value corresponding to the image or the video and data such as an image or a video frequency are also transmitted to a Local Dimming driver board through an SPI interface, and the Local Dimming driver board analyzes the data and then performs backlight adjustment according to the data.
Since the Local Dimming driving board takes time to receive data, process data, and transmit data, a picture and a corresponding backlight are differentiated by at least one frame. When the image or video frequency changes, a new image or video and related parameters are often received first, and then the backlight is calculated and adjusted according to the parameters. When a new image or video is received, the image is already cut into the new image or video, the SPI interface also transmits the brightness of the new image or video, but the used backlight parameters are still calculated according to the parameters of the old image or video, and the resulting brightness difference causes image flicker.
Disclosure of Invention
The invention mainly aims to provide a backlight adjusting method, backlight adjusting equipment and a storage medium, and aims to solve the technical problem that a liquid crystal display with Local Dimming in the prior art flickers pictures when images or videos with different frequencies are switched.
To achieve the above object, the present invention provides a backlight adjusting method, comprising the steps of:
detecting whether the current operation is an operation of entering a homepage, or an operation of switching between information sources, switching an information channel in the information source or switching from the homepage to the information source;
when the current operation is an operation of entering a homepage, acquiring an image or video refreshing frequency corresponding to the homepage;
when the current operation is switching between information sources, switching an information source internal channel or switching from a homepage to an information source, inserting a black field with a preset frame number, and acquiring an image or video refreshing frequency corresponding to a switched target information source or a target channel;
and setting backlight parameters according to the acquired image or video refreshing frequency, and adjusting the backlight according to the backlight parameters.
Preferably, the step of setting the backlight parameter according to the acquired image or video refresh frequency includes:
calculating backlight frequency according to the obtained image or video refreshing frequency;
calculating the backlight brightness according to the obtained image or video refreshing frequency;
and setting backlight parameters according to the backlight frequency and the backlight brightness.
Preferably, the step of calculating a backlight frequency according to the acquired image or video refresh frequency includes:
and multiplying the acquired image or video refreshing frequency by a positive integer to obtain the backlight frequency.
Preferably, the backlight brightness is calculated from said acquired image or video refresh frequency by the following formula,
Backlight＝Value*f*Reg；
wherein Value is the brightness Value of the image or video corresponding to the obtained image or video refresh frequency, f is the obtained image or video refresh frequency, and Reg is the Value of the correction register.
Preferably, the step of inserting a preset number of frames of black fields includes:
and replacing the black field with the preset frame number with the play data of the previous preset frame number of the target information source or the target channel.
Preferably, the step of acquiring an image or video refresh frequency corresponding to the homepage when the current operation is an operation of entering the homepage includes:
judging whether a history record of switching from the information source to the homepage exists when the current operation is the operation of entering the homepage;
when the history record does not exist, acquiring the image or video refreshing frequency of the homepage;
and when the history record exists, acquiring the image or video refreshing frequency of the information source before the homepage is accessed.
Further, to achieve the above object, the present invention also provides a display comprising: a memory, a processor and a backlight adjusting program stored on the memory and executable on the processor, the backlight adjusting program being configured to implement the steps of the backlight adjusting method.
In addition, to achieve the above object, the present invention further provides a storage medium having a backlight adjusting program stored thereon, wherein the backlight adjusting program, when executed by a processor, implements the steps of the backlight adjusting method.
The method comprises the steps of detecting whether the current operation is the operation of entering a homepage, or the operation of switching between information sources, switching an information channel in the information source or switching from the homepage to the information source; when the current operation is an operation of entering a homepage, acquiring an image or video refreshing frequency corresponding to the homepage; when the current operation is switching between information sources, switching an information source internal channel or switching from a homepage to an information source, inserting a black field with a preset frame number, and acquiring an image or video refreshing frequency corresponding to a switched target information source or a target channel; and setting backlight parameters according to the acquired image or video refreshing frequency, and adjusting the backlight according to the backlight parameters. When the homepage is accessed, the backlight parameters are set according to the image or video refreshing frequency corresponding to the homepage and backlight adjustment is carried out, and when the information sources are switched, the channels in the information sources are switched or the homepage is switched to the information sources, black field insertion processing is carried out on the target information sources or the target channels, so that the light transmittance during switching is reduced, flickering caused by poor image backlight brightness is effectively avoided, and the user experience of products is improved.
Drawings
FIG. 1 is a schematic diagram of a display structure of a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating a backlight adjusting method according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating a backlight adjusting method according to another embodiment of the invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic diagram of a display structure of a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the display may include: a processor 1001, such as a CPU, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration shown in fig. 1 does not constitute a limitation of the display, and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a kind of computer storage medium, may include therein an operating system, a network communication module, a user interface module, and a backlight adjusting program.
In the display shown in fig. 1, the network interface 1004 is mainly used for data communication with an external network; the user interface 1003 is mainly used for receiving input instructions of a user; the display calls a backlight adjustment program stored in the memory 1005 by the processor 1001 and performs the following operations:
detecting whether the current operation is an operation of entering a homepage, or an operation of switching between information sources, switching an information channel in the information source or switching from the homepage to the information source;
when the current operation is an operation of entering a homepage, acquiring an image or video refreshing frequency corresponding to the homepage;
when the current operation is switching between information sources, switching an information source internal channel or switching from a homepage to an information source, inserting a black field with a preset frame number, and acquiring an image or video refreshing frequency corresponding to a switched target information source or a target channel;
and setting backlight parameters according to the acquired image or video refreshing frequency, and adjusting the backlight according to the backlight parameters.
Further, the processor 1001 may call the backlight adjusting program stored in the memory 1005, and further perform the following operations:
calculating backlight frequency according to the obtained image or video refreshing frequency;
calculating the backlight brightness according to the obtained image or video refreshing frequency;
and setting backlight parameters according to the backlight frequency and the backlight brightness.
Further, the processor 1001 may call the backlight adjusting program stored in the memory 1005, and further perform the following operations:
and multiplying the acquired image or video refreshing frequency by a positive integer to obtain the backlight frequency.
Further, the processor 1001 may call the backlight adjusting program stored in the memory 1005, and further perform the following operations:
calculating the backlight brightness according to the acquired image or video refresh frequency by the following formula,
Backlight＝Value*f*Reg；
wherein Value is the brightness Value of the image or video corresponding to the obtained image or video refresh frequency, f is the obtained image or video refresh frequency, and Reg is the Value of the correction register.
Further, the processor 1001 may call the backlight adjusting program stored in the memory 1005, and further perform the following operations:
and replacing the black field with the preset frame number with the play data of the previous preset frame number of the target information source or the target channel.
Further, the processor 1001 may call the backlight adjusting program stored in the memory 1005, and further perform the following operations:
judging whether a history record of switching from the information source to the homepage exists when the current operation is the operation of entering the homepage;
when the history record does not exist, acquiring the image or video refreshing frequency of the homepage;
and when the history record exists, acquiring the image or video refreshing frequency of the information source before the homepage is accessed.
The embodiment detects whether the current operation is the operation of entering the homepage, or the operation of switching between information sources, switching an information channel in the information source or switching from the homepage to the information source; when the current operation is an operation of entering a homepage, acquiring an image or video refreshing frequency corresponding to the homepage; when the current operation is switching between information sources, switching an information source internal channel or switching from a homepage to an information source, inserting a black field with a preset frame number, and acquiring an image or video refreshing frequency corresponding to a switched target information source or a target channel; and setting backlight parameters according to the acquired image or video refreshing frequency, and adjusting the backlight according to the backlight parameters. When the homepage is accessed, the backlight parameters are set according to the image or video refreshing frequency corresponding to the homepage and backlight adjustment is carried out, and when the information sources are switched, the channels in the information sources are switched or the homepage is switched to the information sources, black field insertion processing is carried out on the target information sources or the target channels, so that the light transmittance during switching is reduced, flickering caused by poor image backlight brightness is effectively avoided, and the user experience of products is improved.
Based on the hardware structure, the embodiment of the backlight adjusting method is provided.
Referring to fig. 2, fig. 2 is a flowchart illustrating a backlight adjusting method according to an embodiment of the invention.
In one embodiment, the backlight adjusting method comprises the following steps:
s10: detecting whether the current operation is an operation of entering a homepage, or an operation of switching between information sources, switching an information channel in the information source or switching from the homepage to the information source;
it should be understood that the home page refers to the first page viewed when the user visits a website, and the operation may be a gesture operation, a touch operation, or a voice operation, which is not limited in this embodiment. The source refers to a signal source of the display, such as an HDMI1 signal (a signal of a first HDMI interface of the liquid crystal display), an HDMI2 signal, an HDMI3 signal, a VGA signal, or a USB signal, which is not limited in this embodiment.
When the system is just started to enter a homepage, other information sources are switched to the homepage, the information sources are switched, channels in the information sources are switched or the homepage is switched to the information sources, the image or video frequency changes, and by detecting whether the operation is performed or not, backlight adjustment is performed to avoid flicker when the operation is detected.
S20: when the current operation is an operation of entering a homepage, acquiring an image or video refreshing frequency corresponding to the homepage;
it should be understood that the image or video refresh frequency includes an image refresh frequency or a video refresh frequency, the image refresh frequency refers to a refresh frequency corresponding to a static image, and the video refresh frequency refers to a refresh frequency corresponding to a dynamic image.
Specifically, when the current operation is an operation of entering a homepage, judging whether a history record of switching from a source to the homepage exists; when the history record does not exist, acquiring the image or video refreshing frequency of the homepage; and when the history record exists, acquiring the image or video refreshing frequency of the information source before the homepage is accessed.
It is easy to understand that the system is not first entered into the homepage when there is a history of switching from the source to the homepage, and that the system is first entered into the homepage when there is no history of switching from the source to the homepage. Backlight adjustment with different strategies can be carried out according to actual conditions.
When the history record does not exist, the system firstly enters the homepage, and the default image or video refreshing frequency of the homepage can be used as the image or video refreshing frequency corresponding to the homepage; when the history record exists, the system returns to the homepage from other information sources, the image or video refreshing frequency under the information source needs to be stored and set as the image refreshing frequency corresponding to the homepage, and therefore when the homepage is switched from the information source, all relevant parameters calculated by the backlight brightness can be kept unchanged, and flicker caused by poor image backlight brightness is avoided.
The embodiment effectively avoids flicker caused by backlight brightness difference when the system enters the homepage for the first time or is switched from the information source to the homepage, and improves product defects.
S30: when the current operation is switching between information sources, switching an information source internal channel or switching from a homepage to an information source, inserting a black field with a preset frame number, and acquiring an image or video refreshing frequency corresponding to a switched target information source or a target channel;
it should be noted that, since the Local Dimming driving board takes time to receive data, process data and transmit data, there is at least one frame difference between the picture and the corresponding backlight. When a video stream with the same frequency is played normally, the difference of one frame cannot be perceived by a viewer due to short time, but when the frequency of an image or video changes, the picture flickers due to the brightness difference, so the embodiment detects the operation of switching between information sources, switching an information channel in the information source or switching from a homepage to the information source so as to judge whether the frequency of the image or video changes.
When the system enters the information source from a homepage, switches between the information sources or switches channels in the information source, because the image or video refreshing frequency of the information source cannot be changed randomly, in this case, the play data of the preset frame number in front of the switched target information source or target channel is replaced by a black field, the light transmittance is extremely low, and the impact of the backlight brightness difference on human eyes is reduced to be invisible.
In one embodiment, the predetermined number of frames is two frames. In a specific implementation, the Local Dimming driver board needs to receive a frame of image to analyze the corresponding image or video refresh frequency, and on the basis, a frame of calculation is performed to obtain the backlight frequency and the backlight brightness, and then the backlight is adjusted. Therefore, the black field is used at the positions of the two frames, so that the impact of the flicker of the picture caused by the brightness difference of the two frames on human eyes can be avoided.
S40: and setting backlight parameters according to the acquired image or video refreshing frequency, and adjusting the backlight according to the backlight parameters.
It should be understood that when the obtained image or video refresh frequency is the image or video refresh frequency corresponding to the homepage, the backlight parameter is set according to the image or video refresh frequency corresponding to the homepage and the backlight adjustment is performed; and when the acquired image or video refreshing frequency is the image or video refreshing frequency corresponding to the target information source or the target channel, setting backlight parameters according to the image or video refreshing frequency corresponding to the target information source or the target channel and carrying out backlight adjustment.
The embodiment detects whether the current operation is the operation of entering the homepage, or the operation of switching between information sources, switching channels in the information sources or switching from the homepage to the information sources; when the current operation is an operation of entering a homepage, acquiring an image or video refreshing frequency corresponding to the homepage; when the current operation is switching between information sources, switching an information source internal channel or switching from a homepage to an information source, inserting a black field with a preset frame number, and acquiring an image or video refreshing frequency corresponding to a switched target information source or a target channel; and setting backlight parameters according to the acquired image or video refreshing frequency, and adjusting the backlight according to the backlight parameters. When the homepage is accessed, the backlight parameters are set according to the image or video refreshing frequency corresponding to the homepage and backlight adjustment is carried out, and when the information sources are switched, the channels in the information sources are switched or the homepage is switched to the information sources, black field insertion processing is carried out on the target information sources or the target channels, so that the light transmittance during switching is reduced, flickering caused by poor image backlight brightness is effectively avoided, and the user experience of products is improved.
Further, referring to fig. 3, fig. 3 is a flowchart illustrating a backlight adjusting method according to another embodiment of the present invention. In this embodiment, step S40 includes the following steps:
s41: calculating backlight frequency according to the obtained image or video refreshing frequency;
s42: calculating the backlight brightness according to the obtained image or video refreshing frequency;
s43: and setting backlight parameters according to the backlight frequency and the backlight brightness, and adjusting the backlight according to the backlight parameters.
Specifically, the backlight frequency is obtained by multiplying the acquired image or video refresh frequency by a positive integer. The backlight frequency is adjusted to be the same as the image or video refreshing frequency or in integral multiple relation, so that the risk of backlight flicker can be effectively reduced.
Taking the image refresh frequency under the homepage as 60Hz as an example, in order to reduce the backlight flicker, the backlight frequency of the homepage can be set to 60Hz, 120Hz or 180Hz, and then the video refresh frequency of the video stream played by HDMI1 is 50Hz as an example, and the backlight frequency can be set to 50Hz, 100Hz or 150Hz when the HDMI1 is played.
The calculation formula of the backlight brightness may specifically be:
Backlight＝Value*f*Reg；
wherein Value is the brightness Value of the image or video corresponding to the obtained image or video refresh frequency, f is the obtained image or video refresh frequency, and Reg is the Value of the correction register. The value of the correction register is the value read from the modification register that is related to the image or video refresh rate being acquired.
In a specific implementation, the image or video refresh frequency and the backlight frequency in the current state need to be stored and updated in real time for reading when switching the source or the homepage.
Taking the image refresh frequency under the current homepage as 50Hz, the backlight frequency of the homepage as 100Hz, the video refresh frequency of the video stream played by HDMI1 as 60Hz, and the backlight frequency when playing the video stream as 120Hz, when playing is switched from the homepage to HDMI1, because the driving board needs to analyze the video refresh frequency corresponding to the video when receiving the video played by HDMI1, and meanwhile, correct backlight brightness and backlight frequency can be sent after calculation on the basis, when receiving the image played by HDMI1, the picture is switched to the video played by HDMI1, the SPI interface also transmits new video brightness and video refresh frequency, and at this time, the driving board does not obtain new backlight frequency, and the backlight brightness is still calculated according to the image frequency of the original homepage, so that the generated brightness difference causes flicker. And in the time of receiving the video played by the HDMI1 and calculating the new backlight brightness and backlight frequency, black field insertion processing is carried out, so that the impact of brightness difference on human eyes can be reduced to be invisible, and the problem of picture flicker is solved.
The embodiment calculates the backlight frequency according to the acquired image or video refreshing frequency; calculating the backlight brightness according to the obtained image or video refreshing frequency; and setting backlight parameters according to the backlight frequency and the backlight brightness. The backlight brightness and the backlight frequency are calculated through the obtained image or video refreshing frequency, so that the accuracy and the efficiency of backlight adjustment are improved, and the product quality is improved.
In addition, an embodiment of the present invention further provides a storage medium, where the storage medium stores a backlight adjustment program, and the backlight adjustment program, when executed by a processor, implements the following operations:
the current operation is the operation of entering a homepage, or the operation of switching between information sources, switching channels in the information sources or switching from the homepage to the information sources;
when the current operation is an operation of entering a homepage, acquiring an image or video refreshing frequency corresponding to the homepage;
when the current operation is switching between information sources, switching an information source internal channel or switching from a homepage to an information source, inserting a black field with a preset frame number, and acquiring an image or video refreshing frequency corresponding to a switched target information source or a target channel;
and setting backlight parameters according to the acquired image or video refreshing frequency, and adjusting the backlight according to the backlight parameters.
Further, the backlight adjusting program when executed by the processor further implements the following operations:
calculating backlight frequency according to the obtained image or video refreshing frequency;
calculating the backlight brightness according to the obtained image or video refreshing frequency;
and setting backlight parameters according to the backlight frequency and the backlight brightness.
Further, the backlight adjusting program when executed by the processor further implements the following operations:
and multiplying the acquired image or video refreshing frequency by a positive integer to obtain the backlight frequency.
Further, the backlight adjusting program when executed by the processor further implements the following operations:
and multiplying the image refreshing frequency by a positive integer to obtain the backlight frequency.
Further, the backlight adjusting program when executed by the processor further implements the following operations:
calculating the backlight brightness according to the acquired image or video refresh frequency by the following formula,
Backlight＝Value*f*Reg；
wherein Value is the brightness Value of the image or video corresponding to the obtained image or video refresh frequency, f is the obtained image or video refresh frequency, and Reg is the Value of the correction register.
Further, the backlight adjusting program when executed by the processor further implements the following operations:
and replacing the black field with the preset frame number with the play data of the previous preset frame number of the target information source or the target channel.
Further, the backlight adjusting program when executed by the processor further implements the following operations:
judging whether a history record of switching from the information source to the homepage exists when the current operation is the operation of entering the homepage;
when the history record does not exist, acquiring the image or video refreshing frequency of the homepage;
and when the history record exists, acquiring the image or video refreshing frequency of the information source before the homepage is accessed.
The specific embodiment of the computer-readable storage medium of the present invention is substantially the same as the embodiments of the backlight adjusting method described above, and is not described herein again.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A backlight adjustment method, characterized in that the backlight adjustment method comprises the steps of:
detecting whether the current operation is an operation of entering a homepage, or an operation of switching between information sources, switching an information channel in the information source or switching from the homepage to the information source;
when the current operation is an operation of entering a homepage, acquiring an image or video refreshing frequency corresponding to the homepage; the image or video refreshing frequency comprises an image refreshing frequency or a video refreshing frequency, wherein the image refreshing frequency refers to a refreshing frequency corresponding to a static image, and the video refreshing frequency refers to a refreshing frequency corresponding to a dynamic image;
when the current operation is switching between information sources, switching an information source internal channel or switching from a homepage to an information source, inserting a black field with a preset frame number, and acquiring an image or video refreshing frequency corresponding to a switched target information source or a target channel;
and setting backlight parameters according to the acquired image or video refreshing frequency, and adjusting the backlight according to the backlight parameters.
2. The backlight adjustment method of claim 1, wherein the step of setting the backlight parameters according to the acquired image or video refresh frequency comprises:
calculating backlight frequency according to the obtained image or video refreshing frequency;
calculating the backlight brightness according to the obtained image or video refreshing frequency;
and setting backlight parameters according to the backlight frequency and the backlight brightness.
3. The backlight adjustment method of claim 2, wherein the step of calculating a backlight frequency from the acquired image or video refresh frequency comprises:
and multiplying the acquired image or video refreshing frequency by a positive integer to obtain the backlight frequency.
4. The backlight adjustment method of claim 2, wherein the backlight brightness is calculated from the acquired image or video refresh frequency by the following formula,
Backlight＝Value*f*Reg；
wherein Value is the brightness Value of the image or video corresponding to the obtained image or video refresh frequency, f is the obtained image or video refresh frequency, and Reg is the Value of the correction register.
5. The backlight adjusting method of any one of claims 1 to 4, wherein the step of inserting a preset number of frames of black fields comprises:
and replacing the black field with the preset frame number with the play data of the previous preset frame number of the target information source or the target channel.
6. The backlight adjustment method of any one of claims 1 to 4, wherein the preset number of frames is two frames.
7. The backlight adjustment method according to any one of claims 1 to 4, wherein the step of acquiring an image or video refresh frequency corresponding to the homepage when the current operation is an operation of entering the homepage comprises:
judging whether a history record of switching from the information source to the homepage exists when the current operation is the operation of entering the homepage;
when the history record does not exist, acquiring the image or video refreshing frequency of the homepage;
and when the history record exists, acquiring the image or video refreshing frequency of the information source before the homepage is accessed.
8. A display, characterized in that the display comprises: memory, a processor and a backlight adjustment program stored on the memory and executable on the processor, the backlight adjustment program being configured to implement the steps of the backlight adjustment method as claimed in any one of claims 1 to 7.
9. A storage medium having a backlight adjustment program stored thereon, which when executed by a processor implements the steps of the backlight adjustment method according to any one of claims 1 to 7.
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