CN112382240A - Backlight control method and device, electronic equipment and readable storage medium - Google Patents
Backlight control method and device, electronic equipment and readable storage medium Download PDFInfo
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- CN112382240A CN112382240A CN202011191034.5A CN202011191034A CN112382240A CN 112382240 A CN112382240 A CN 112382240A CN 202011191034 A CN202011191034 A CN 202011191034A CN 112382240 A CN112382240 A CN 112382240A
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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
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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Abstract
The application provides a backlight control method, a backlight control device, an electronic device and a readable storage medium, wherein the method comprises the following steps: acquiring a first duration of time that a backlight duty ratio corresponding to a current backlight partition is greater than a preset maximum threshold; and when the first duration is longer than a first time threshold, reducing the maximum backlight duty ratio of the current backlight partition according to the preset maximum threshold, and when the scene switching of the display screen is detected, restoring the maximum backlight duty ratio of each backlight partition of the display screen to a configuration value corresponding to the current display state of the display screen, so that the service life of the lamp tube can be delayed, and the display quality can be ensured under the condition of controlling the cost.
Description
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a backlight control method and apparatus, an electronic device, and a computer-readable storage medium.
Background
With the development of display technology, backlight modulation technology is usually adopted to control the brightness of the backlight source, and the lighting effect of the backlight source directly affects the visual effect of the display.
When lighting for a long time, the temperature of the light source can rise linearly, so that the temperature of the display equipment rises, the service life of the lamp tube is influenced, and the cost of the display equipment is improved by adding a heat dissipation device.
Disclosure of Invention
The embodiment of the application provides a backlight control method and device, electronic equipment and a computer readable storage medium, an additional heat dissipation device is not needed, balance is achieved between display quality and heat dissipation, the service life of a lamp tube is delayed, and the display quality is guaranteed under the condition of controlling cost.
A method of backlight control, the method comprising:
acquiring a first duration of time that a backlight duty ratio corresponding to a current backlight partition is greater than a preset maximum threshold;
when the first duration is greater than a first time threshold, reducing the maximum backlight duty ratio of the current backlight partition according to the preset maximum threshold;
and when the scene switching of the display screen is detected, restoring the maximum backlight duty ratio of each backlight partition of the display screen to a configuration value corresponding to the current display state of the display screen.
A backlight control apparatus comprising:
the backlight control device comprises an acquisition module, a display module and a control module, wherein the acquisition module is used for acquiring a first duration time that a backlight duty ratio corresponding to a current backlight partition is greater than a preset maximum threshold value;
a decreasing module, configured to decrease a maximum backlight duty ratio of the current backlight partition according to the preset maximum threshold when the first duration is greater than a first time threshold;
and the recovery module is used for recovering the maximum backlight duty ratio of each backlight partition of the display screen to a configuration value corresponding to the current display state of the display screen when the scene switching of the display screen is detected.
An electronic device comprising a memory and a processor, the memory having stored therein a computer program that, when executed by the processor, causes the processor to perform the steps of:
acquiring a first duration of time that a backlight duty ratio corresponding to a current backlight partition is greater than a preset maximum threshold;
when the first duration is greater than a first time threshold, reducing the maximum backlight duty ratio of the current backlight partition according to the preset maximum threshold;
and when the scene switching of the display screen is detected, restoring the maximum backlight duty ratio of each backlight partition of the display screen to a configuration value corresponding to the current display state of the display screen.
A computer-readable storage medium, on which a computer program is stored which, when executed by a processor, carries out the steps of:
acquiring a first duration of time that a backlight duty ratio corresponding to a current backlight partition is greater than a preset maximum threshold;
when the first duration is greater than a first time threshold, reducing the maximum backlight duty ratio of the current backlight partition according to the preset maximum threshold;
and when the scene switching of the display screen is detected, restoring the maximum backlight duty ratio of each backlight partition of the display screen to a configuration value corresponding to the current display state of the display screen.
According to the backlight control method, the backlight control device, the electronic equipment and the readable storage medium, the first duration time that the backlight duty ratio corresponding to the current backlight partition is greater than the preset maximum threshold value is obtained; when the first duration is longer than a first time threshold, reducing the maximum backlight duty ratio of the current backlight partition according to a preset maximum threshold; when the scene switching of the display screen is detected, the maximum backlight duty ratio of each backlight subarea of the display screen is restored to the configuration value corresponding to the current display state of the display screen, and the maximum backlight duty ratio of the current backlight subarea can be automatically reduced when the backlight duty ratio is continuously larger than the preset maximum threshold value, so that the brightness is reduced, the temperature of the lamp tube is reduced, the service life of the lamp tube is prolonged, the display of the picture is not influenced by the previous adjustment of the maximum backlight duty ratio of the current backlight subarea when the scene switching occurs, the display quality of the picture when the scene switching occurs is ensured, no additional heat dissipation device is needed, the balance between the display quality and the heat dissipation is achieved, and the display quality is ensured under the condition of controlling the cost.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a diagram of an exemplary backlight control method;
FIG. 2 is a flow diagram of a backlight control method in one embodiment;
FIG. 3 is a flow chart of a backlight control method in another embodiment;
FIG. 4 is a flow diagram illustrating backlight control by first level logic in one embodiment;
FIG. 5 is a flow diagram illustrating backlight control by second level logic in an exemplary embodiment;
FIG. 6 is a table illustrating the maximum duty value distribution corresponding to the current backlight partition when different display window ratios are used in one embodiment;
FIG. 7 is a block diagram showing the structure of a backlight control device according to an embodiment;
fig. 8 is a schematic diagram of an internal structure of an electronic device in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It will be understood that the terms "first," "second," and the like as used herein may be used herein to describe various data, but the data is not limited by these terms. These terms are only used to distinguish one datum from another. For example, a first duration may be referred to as a second duration, and similarly, a second duration may be referred to as a first duration, without departing from the scope of the present application. The first duration and the second duration are both durations, but they are not the same duration.
Fig. 1 is a schematic diagram of an application environment of a backlight control method in an embodiment. As shown in fig. 1, the application environment includes a display screen 102, where the display screen 102 includes a plurality of backlight partitions, each backlight partition includes at least one backlight source, and adjusting backlight brightness of different backlight partitions is implemented by adjusting backlight duty ratio of each backlight partition. The display screen 102 may be, but is not limited to, display screens of various televisions, personal computers, notebook computers, smart phones, tablet computers, and portable wearable devices. According to different display frames of the display screen, each backlight partition has a corresponding backlight duty ratio, a first duration time that the backlight duty ratio corresponding to the current backlight partition is larger than a preset maximum threshold value is obtained, when the first duration time is larger than the first time threshold value, the maximum backlight duty ratio of the current backlight partition is reduced according to the preset maximum threshold value, and when the scene switching of the display screen is detected, the maximum backlight duty ratio of each backlight partition of the display screen is recovered to a configuration value corresponding to the current display state of the display screen.
FIG. 2 is a flow chart of a backlight control method in one embodiment. The backlight control method in the present embodiment is described by taking the display screen 102 in fig. 1 as an example. The method comprises the following steps:
The duty ratio of the backlight duty refers to the proportion of the power-on time to the total time in one pulse cycle, for example, the pulse width is 1 μ s, and the duty ratio of the pulse sequence in the signal period of 4 μ s is 0.25. In one embodiment, the display screen includes 210 backlight sections, each backlight section including 2 lamps.
Specifically, the duty ratio of the backlight is adjusted by taking the backlight partition as a unit, the preset maximum threshold value may be different according to the property of the lamp, and in one embodiment, the preset maximum threshold value is 60% when a single lamp exceeds 60% of duty and the time exceeds 5 minutes, which may cause the risk of burning out the lamp. Wherein the first duration may be counted by a counter. In one embodiment, different maximum backlight duty ratios are allocated to the backlight partitions according to display window duty ratios of the display screen, for example, when the window duty ratios are greater than a first preset window threshold, the backlight partitions maintain a first preset maximum backlight duty ratio unchanged, and when the window duty ratios are less than a second preset window threshold, the backlight partitions maintain a second preset maximum backlight duty ratio unchanged, wherein the first preset window threshold is greater than the second preset window threshold, and the first preset maximum backlight duty ratio is less than the second preset maximum backlight duty ratio. When the window duty ratio is between the second preset window threshold value and the first preset window threshold value, the maximum backlight duty ratio corresponding to the backlight partition is reduced along with the increase of the window duty ratio. In one embodiment, the first preset window threshold is 70%, the second preset window threshold is 15%, the first preset maximum backlight duty cycle is 40%, and the second preset maximum backlight duty cycle is 100%. When the window occupation ratio is less than 15%, the maximum backlight duty ratio corresponding to the backlight partition is 100%, and when the window occupation ratio is greater than 15% and less than 70%, the maximum backlight duty ratio corresponding to the backlight partition is continuously reduced along with the continuous increase of the window until the window occupation ratio is greater than or equal to 70%, the maximum backlight duty ratio corresponding to the backlight partition is kept unchanged by 40%.
And 204, when the first duration is greater than the first time threshold, reducing the maximum backlight duty ratio of the current backlight partition according to a preset maximum threshold.
In one embodiment, the first time threshold is an empirical value obtained by statistics of video content and human eye characteristics, for example, the first duration is 40S, a frame is maintained in a current state for generally not more than 40 seconds in a conventional case, for example, a sun is currently played, brightness corresponding to the sun is a maximum value, and if a lamp tube of a backlight partition corresponding to a sun position exceeds 40 seconds, the maximum backlight duty cycle of the backlight partition at the position needs to be reduced, so that the brightness is reduced, and the temperature of the lamp tube is reduced.
Specifically, the maximum backlight duty of the current backlight partition is decreased according to the preset maximum threshold, and the maximum backlight duty of the current backlight partition may be gradually decreased to be equal to or less than the preset maximum threshold. The gradual reduction algorithm can be customized, for example, the acceleration can be customized to gradually reduce the maximum backlight duty ratio of the current backlight partition, and the maximum backlight duty ratio of the current backlight partition can also be gradually reduced at a constant speed, wherein the reduction speed can be determined by fixedly reducing the preset frame number by a preset amplitude.
And step 206, when the scene switching of the display screen is detected, restoring the maximum backlight duty ratio of each backlight partition of the display screen to a configuration value corresponding to the current display state of the display screen.
Specifically, the scene switching means that the display content of the display screen has changed in a scene, the scene switching can be detected by detecting that the amplitude of the change of the display content exceeds a preset threshold, and whether the scene switching occurs can be determined by detecting the ratio of the lamps having changed in a preset gray scale. The current display state of the display screen can be determined according to a configuration strategy of the maximum backlight duty ratio, if the configuration strategy is to determine the maximum backlight duty ratio of each backlight partition according to the window size, the current display state of the display screen is the display window duty ratio determined according to the current display picture of the display screen, if the current display picture is the display window duty ratio corresponding to the moon is 20%, and the current display picture is the display window duty ratio corresponding to the stars is 10%. When the configuration strategy is that the maximum backlight duty ratio of each backlight partition is changed according to other display parameters, the current display state of the display screen can be other display parameters, such as the size of an interested area. The maximum backlight duty ratio of each backlight partition of the display screen is restored to the configuration value corresponding to the current display state of the display screen, so that when scene switching occurs, the display of the picture is not influenced by the previous adjustment of the maximum backlight duty ratio of the current backlight partition, and the display quality of the picture when the scene switching occurs is ensured.
In the backlight control method in the embodiment, a first duration time that a backlight duty ratio corresponding to a current backlight partition is greater than a preset maximum threshold value is obtained; when the first duration is longer than a first time threshold, reducing the maximum backlight duty ratio of the current backlight partition according to a preset maximum threshold; when the scene switching of the display screen is detected, the maximum backlight duty ratio of each backlight subarea of the display screen is restored to the configuration value corresponding to the current display state of the display screen, and the maximum backlight duty ratio of the current backlight subarea can be automatically reduced when the backlight duty ratio is continuously larger than the preset maximum threshold value, so that the brightness is reduced, the temperature of the lamp tube is reduced, the service life of the lamp tube is prolonged, the display of the picture is not influenced by the previous adjustment of the maximum backlight duty ratio of the current backlight subarea when the scene switching occurs, the display quality of the picture when the scene switching occurs is ensured, no additional heat dissipation device is needed, the balance between the display quality and the heat dissipation is achieved, and the display quality is ensured under the condition of controlling the cost.
In one embodiment, step 202 comprises: counting the first duration time through a first timer corresponding to the current backlight partition, clearing the first timer when the maximum backlight duty ratio of the current backlight partition is reduced according to a preset maximum threshold value, and clearing the first timer when the scene of the display screen is switched.
Specifically, each backlight partition has a corresponding first timer for counting a first duration, and when the first duration is greater than a first time threshold, the maximum backlight duty cycle of the current backlight partition is reduced according to a preset maximum threshold, and the first timer is cleared. In one embodiment, when the maximum backlight duty ratio of the current backlight partition is reduced to be equal to or less than the preset maximum threshold, the timing triggering function of the first timer is restarted, so that the timing function of the first timer can be triggered when the backlight duty ratio corresponding to the next current backlight partition is greater than the preset maximum threshold. And when the maximum backlight duty ratio of the current backlight partition is gradually reduced, the timing trigger function of the first timer is closed, and in the adjustment process, although the backlight duty ratio corresponding to the current backlight partition is larger than the preset maximum threshold value, the adjustment is started, and the timing function of the first timer is not required to be started. When scenes of the display screen are switched, the maximum backlight duty ratio of each backlight partition of the display screen is restored to a configuration value corresponding to the current display state of the display screen, at the moment, the first timer is cleared, and when the backlight duty ratio corresponding to the current backlight partition of the next time is larger than a preset maximum threshold value, the first timer restarts timing.
In this embodiment, when the maximum backlight duty cycle of the current backlight partition is adjusted or the display screen scene is switched, the first timer is cleared, so that the first timer can work normally, the timing is accurate, and when the condition is met, the first timer is automatically cleared to intelligently count the time.
In one embodiment, as shown in fig. 3, the backlight control method further includes:
and 302, counting a second duration time that the backlight duty ratio corresponding to the current backlight partition is greater than a preset maximum threshold value through a second timer corresponding to the current backlight partition.
Specifically, each backlight partition has a corresponding second timer, the timing rule of the second timer is different from that of the first timer, and the second timer cannot be cleared when the scene of the display screen is switched.
And 304, when the second duration is greater than a second time threshold, reducing the maximum backlight duty ratio of the current backlight partition according to a preset maximum threshold, and clearing a second timer, wherein the second time threshold is greater than the first time threshold.
The second time threshold value can be self-defined, and is larger than the first time threshold value. In one embodiment, the second time threshold is a critical value of the lamp tube risk of burning out, for example, if a single lamp tube exceeds 60% duty and the time exceeds 5 minutes to risk burning out, the second time threshold may be set to 5 minutes.
Specifically, when the second duration is greater than the second time threshold, the maximum backlight duty of the current backlight partition is decreased according to the preset maximum threshold, and the maximum backlight duty of the current backlight partition may be gradually decreased to be equal to or less than the preset maximum threshold. The gradual reduction algorithm can be customized, for example, the acceleration can be customized to gradually reduce the maximum backlight duty ratio of the current backlight partition, and the maximum backlight duty ratio of the current backlight partition can also be gradually reduced at a constant speed, wherein the reduction speed can be determined by fixedly reducing the preset frame number by a preset amplitude. And simultaneously resetting the second timer. Because the second timer cannot be cleared when the scene of the display screen is switched, if the scene of the display screen is switched all the time and the timing time of the second timer reaches the second time threshold, for example, 5 minutes, the duty is reduced, and the maximum backlight duty ratio of the current backlight partition is reduced.
In the backlight control method in this embodiment, through the auxiliary effect of the second timer, when the display screen is switched all the time, and the duration that the backlight duty ratio is greater than the preset maximum threshold cannot be counted by zero clearing of the first timer, the counting can also be performed by the second timer, so that when the second time threshold is reached, the maximum backlight duty ratio of the current backlight partition is automatically reduced, the lamp tube is protected, and the service life of the lamp tube is delayed.
In one embodiment, reducing the maximum backlight duty cycle of the current backlight partition according to the preset maximum threshold comprises: and gradually reducing the corresponding maximum backlight duty ratio of the current backlight partition according to the display image frame period until the maximum backlight duty ratio of the current backlight partition is equal to or less than a preset maximum threshold value.
Specifically, the period of the display image frame may be customized, for example, the period of the display image frame is set to 4 frames, the gradually-decreasing amplitude in each period of the display image frame may also be customized, for example, the gradually-decreasing amplitude in each time may be set to 1% duty, then 1% duty is decreased in each 4 frames, the maximum backlight duty of the current backlight partition is smoothly decreased in each period of the display image frame, until the maximum backlight duty of the current backlight partition is equal to or less than the preset maximum threshold, the backlight partition may be stopped, and the specific stopping condition may be customized.
In the backlight control method in this embodiment, the maximum backlight duty ratio of the current backlight partition is stably reduced in each display image frame period, so that the heat of the lamp tube can be gradually reduced, and the brightness of the display image frame does not change suddenly, thereby achieving balance between the display quality and the heat dissipation, delaying the service life of the lamp tube, and ensuring the display quality under the condition of controlling the cost.
In one embodiment, after reducing the maximum backlight duty ratio of the current backlight partition according to the preset maximum threshold, the method further includes: acquiring a third duration time that the backlight duty ratio corresponding to the current backlight partition is smaller than a preset maximum threshold value; and when the third duration is greater than the third time threshold, increasing the maximum backlight duty ratio of the current backlight partition.
The third duration that the backlight duty ratio corresponding to the current backlight partition is smaller than the preset maximum threshold may be counted by setting a counter, and the third time threshold may be self-defined, and in one embodiment, the third time threshold is equal to the second time threshold and is 5 minutes.
Specifically, when the third duration that the backlight duty ratio corresponding to the current backlight partition is smaller than the preset maximum threshold exceeds the third time threshold, the lamp tube dissipates heat, and the maximum backlight duty ratio of the current backlight partition can be increased to return to the initial value or return to the configuration value corresponding to the current display state of the display screen. The maximum backlight duty ratio of the current backlight partition can be gradually increased according to a self-defined algorithm, for example, the maximum backlight duty ratio of the current backlight partition can be gradually increased by self-defined acceleration, or the maximum backlight duty ratio of the current backlight partition can be gradually increased at a constant speed, wherein the increasing speed can be determined by fixedly increasing the preset frame number by a preset amplitude.
In the backlight control method in this embodiment, after the lamp tube is cooled, the maximum backlight duty ratio of the current backlight partition is increased, so that the maximum brightness allowed by the lamp tube is increased without being easily perceived, and the lamp tube can reach the maximum brightness of a screen designed and manufactured according to a specific standard, thereby not only preventing the lamp tube from being burned out due to overheating, but also reaching the maximum display brightness of the display screen as much as possible.
In one embodiment, step 206 includes: determining the corresponding current display window ratio according to the current display picture of the display screen; and determining corresponding configuration values for the maximum backlight duty ratio of each backlight partition of the display screen based on the current display window duty ratio.
The current display window ratio is determined according to the brightness of the current display picture, a target backlight partition corresponding to a display area exceeding a preset brightness threshold value can be counted, the current display window ratio is obtained according to the proportion of the target backlight partition to all backlight partitions, and the larger the area with the brightness exceeding the preset brightness threshold value is, the larger the corresponding current display window ratio is.
Specifically, when the current display window duty ratio is different, different configuration values are determined for the maximum backlight duty ratio of each backlight partition of the display screen. The maximum backlight duty determines the maximum brightness that can be displayed by the backlight partition, and in one embodiment, when the current display window duty is less than a second preset window threshold, a higher maximum backlight duty may be set, for example, the maximum backlight duty is 100%. When the current display window duty ratio is between the second preset window threshold value and the first preset window threshold value, the maximum backlight duty ratio corresponding to the backlight partition is continuously reduced along with the continuous increase of the window, and the maximum backlight duty ratio corresponding to the backlight partition is kept unchanged until the window duty ratio is greater than or equal to the first preset window threshold value. As the window is continuously increased, the number of the lamps with the brightness exceeding the preset brightness threshold value in the display screen is increased, the heat productivity of the lamps is increased, and at the moment, the maximum backlight duty ratio corresponding to the backlight partition needs to be reduced, so that the heat of the lamps is reduced, and the lamps are protected.
The backlight control method in the embodiment can determine the corresponding configuration value for the maximum backlight duty ratio of each backlight partition of the display screen through the current display window ratio, thereby achieving dynamic configuration, flexibly conforming to the characteristics of human eyes, and protecting the lamp tube.
In one embodiment, the backlight control method further comprises: and when the display brightness change corresponding to the backlight partition with the preset proportion in the display screen exceeds a brightness change threshold value, judging that the scene switching of the display screen occurs.
Specifically, the statistical condition of the display brightness change corresponding to the backlight partition with the preset proportion in the display screen can be obtained through a gray histogram algorithm, and when the display brightness change corresponding to the backlight partition with the preset proportion in the display screen exceeds a brightness change threshold value, for example, when more than 10% of the lamps have more than 1 gray change, the scene switching of the display screen is judged.
In the backlight control method in the embodiment, the scene switching of the display screen is judged by the fact that the display brightness change corresponding to the backlight partition with the preset proportion exceeds the brightness change threshold value, and the method is efficient and convenient.
In a specific embodiment, as shown in fig. 4 and fig. 5, a flow chart of a backlight control method in an embodiment is shown. The display screen comprises 210 backlight partitions, each backlight partition comprises 2 lamps, when the duty of a single lamp exceeds 60%, the lamp is burnt out in 5 minutes, and the lamp is protected by respective operation processing of 2 layers of logics, wherein the specific process comprises the following steps:
1. as shown in fig. 4, the first layer logic takes a single backlight partition as a unit, and each backlight partition has 3 parameters, which are:
a. after being processed by the 40% power allocation algorithm, the duty value of the current backlight partition is input, as shown in fig. 6, when the 40% power allocation algorithm is in different display window ratios, the maximum duty value allocation table corresponding to the current backlight partition determines the actual duty value of each backlight partition according to the maximum duty value corresponding to the current backlight partition.
b. Duration of lamp tube exceeding 60% duty value
c. Maximum duty value allowed for lamp tube
According to the conditions of the parameters a and b, determining the value of the parameter c in real time to adjust the brightness of the lamp tube; the duration that the duty ratio of the backlight corresponding to the current backlight partition exceeds 60% duty is counted through the first timer, and when the duration exceeds 40 seconds, the maximum duty value allowed by the lamp of the current backlight partition is slowly reduced, so that the lamp can be protected from actually exceeding the duty range specified by hardware, and the duty range is required to be 60% in the embodiment. When the backlight duty ratio corresponding to the current backlight partition does not exceed 60% duty for a period of time, the timing trigger function of the parameter b is recovered, and the maximum duty allowed by the parameter c is also recovered to the initial value or recovered to the corresponding configuration value according to the current display state of the display screen.
When more than 10% of the lamps have more than 1 gray level change, namely, the picture has larger scene switching, the parameters a, b and c are reset, the first timer is cleared, the maximum backlight duty ratio of each backlight partition of the display screen is restored to the configuration value corresponding to the current display state of the display screen, the brightness is reset to the maximum immediately after the scene switching is realized, and the display image quality after the scene switching is ensured.
2. As shown in fig. 5, the second layer of logic uses a single backlight partition as a unit, and each backlight partition has 3 parameters, which are:
a. the duty value of the current backlight subarea is input after the logical processing of the first layer of the front lamp tube protection
b. Duration of lamp tube exceeding 60% duty value
c. Maximum duty value allowed for lamp tube
And counting the duration that the duty ratio of the backlight corresponding to the current backlight partition exceeds 60% duty by using a second timer, wherein the second timer does not need to be cleared when a larger scene is switched in the picture, and when the duration exceeds 5 minutes, the maximum duty value which can be reached by the lamp tube of the current backlight partition is slowly reduced until the actual duty of the lamp tube does not exceed 60% duty. When the backlight duty ratio corresponding to the current backlight partition does not exceed 60% duty for a period of time, the lamp tube dissipates heat, the timing trigger function of the parameter b is recovered, the maximum duty allowed by the parameter c is also recovered to an initial value, or the maximum duty is recovered to a corresponding configuration value according to the current display state of the display screen, and the display brightness is increased. When the second timer counts that the duration time of the backlight duty ratio corresponding to the current backlight partition exceeding 60% duty exceeds 5 minutes, the reset operation may also be performed on each parameter, and then the step of continuously counting the duration time of the backlight duty ratio corresponding to the current backlight partition exceeding 60% duty is returned, and if the duration time of the backlight duty ratio corresponding to the current backlight partition exceeding 60% duty does not exceed 5 minutes, the first-layer logic portion may be entered.
In this embodiment, the maximum backlight duty ratio of the current backlight partition can be automatically reduced by the two-layer logic when the backlight duty ratio is continuously greater than the preset maximum threshold value, so as to imperceptibly reduce the maximum brightness allowed to be displayed, achieve the purpose of cooling the lamp tube, delay the service life of the lamp tube, when scene switching occurs, the display of the picture is not influenced by the maximum backlight duty ratio of the current backlight subarea adjusted before, the display quality of the picture when the scene switching occurs is ensured, after the lamp tube is cooled, the allowable maximum brightness can be increased without being easily perceived, so that the lamp tube can reach the maximum brightness of a screen designed and manufactured according to a specific standard, the lamp tube is protected from being burnt by overheating, the aim of the maximum display brightness of the screen can be fulfilled as much as possible, no additional heat dissipation device is required to be added, balance is achieved between display quality and heat dissipation, and display quality is guaranteed under the condition of controlling cost.
It should be understood that although the various steps in the flow charts of fig. 2-5 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 2-5 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternating with other steps or at least some of the sub-steps or stages of other steps.
Fig. 7 is a block diagram of a backlight control device according to an embodiment. As shown in fig. 7, a backlight control apparatus includes an obtaining module 402, a reducing module 404, and a restoring module 406, wherein:
an obtaining module 402, configured to obtain a first duration that a backlight duty ratio corresponding to a current backlight partition is greater than a preset maximum threshold.
A reducing module 404, configured to reduce the maximum backlight duty ratio of the current backlight partition according to a preset maximum threshold when the first duration is greater than the first time threshold.
The restoring module 406 is configured to restore the maximum backlight duty ratio of each backlight partition of the display screen to a configuration value corresponding to the current display state of the display screen when detecting that the scene of the display screen is switched.
In the backlight control device in this embodiment, a first duration that a backlight duty ratio corresponding to a current backlight partition is greater than a preset maximum threshold is obtained; when the first duration is longer than a first time threshold, reducing the maximum backlight duty ratio of the current backlight partition according to a preset maximum threshold; when the scene switching of the display screen is detected, the maximum backlight duty ratio of each backlight subarea of the display screen is restored to the configuration value corresponding to the current display state of the display screen, and the maximum backlight duty ratio of the current backlight subarea can be automatically reduced when the backlight duty ratio is continuously larger than the preset maximum threshold value, so that the brightness is reduced, the temperature of the lamp tube is reduced, the service life of the lamp tube is prolonged, the display of the picture is not influenced by the previous adjustment of the maximum backlight duty ratio of the current backlight subarea when the scene switching occurs, the display quality of the picture when the scene switching occurs is ensured, no additional heat dissipation device is needed, the balance between the display quality and the heat dissipation is achieved, and the display quality is ensured under the condition of controlling the cost.
In one embodiment, the obtaining module 402 is further configured to count the first duration by a first timer corresponding to the current backlight partition.
The device still includes:
the zero clearing module 408 is configured to zero the first timer when the maximum backlight duty ratio of the current backlight partition is decreased according to the preset maximum threshold, and zero the first timer when the display screen scene is switched.
The backlight control device in this embodiment clears the first timer when the maximum backlight duty ratio of the current backlight partition is adjusted or the display screen scene is switched, so that the first timer can work normally, the timing is accurate, and the first timer is automatically cleared when the conditions are met, so that the time is intelligently counted.
In one embodiment, the apparatus further comprises:
the adjusting module 410 is configured to count, by using a second timer corresponding to the current backlight partition, a second duration that the backlight duty ratio corresponding to the current backlight partition is greater than a preset maximum threshold, and when the second duration is greater than the second time threshold, reduce the maximum backlight duty ratio of the current backlight partition according to the preset maximum threshold, and clear the second timer, where the second time threshold is greater than the first time threshold.
The backlight control device in this embodiment switches scenes all the time on the display screen through the auxiliary action of the second timer, and when the first timer is cleared and cannot count the duration time that the backlight duty ratio is greater than the preset maximum threshold value, the backlight control device can also count through the second timer, so that when the second time threshold value is reached, the maximum backlight duty ratio of the current backlight partition is automatically reduced, the lamp tube is protected, and the service life of the lamp tube is delayed.
In one embodiment, the decreasing module 404 or the adjusting module 410 is further configured to gradually decrease the corresponding maximum backlight duty ratio for the current backlight partition according to the display image frame period until the maximum backlight duty ratio of the current backlight partition is equal to or less than the preset maximum threshold.
The backlight control device in this embodiment can gradually reduce the heat of the lamp tube by steadily reducing the maximum backlight duty ratio of the current backlight partition within each display image frame period, and simultaneously, the brightness of the display image frame does not suddenly change, thereby achieving balance between the display quality and the heat dissipation, delaying the service life of the lamp tube, and ensuring the display quality under the condition of controlling the cost.
In one embodiment, the apparatus further comprises:
the increasing module 412 is configured to obtain a third duration that the backlight duty ratio corresponding to the current backlight partition is smaller than a preset maximum threshold, and increase the maximum backlight duty ratio of the current backlight partition when the third duration is larger than the third time threshold.
The backlight control device in this embodiment increases the maximum brightness allowed by the lamp tube imperceptibly by increasing the maximum backlight duty ratio of the current backlight partition after the lamp tube is cooled, so that the lamp tube can reach the maximum brightness of the screen designed and manufactured according to a specific standard, thereby not only protecting the lamp tube from being burned out due to overheating, but also reaching the maximum display brightness of the display screen as much as possible.
In an embodiment, the restoring module 406 is further configured to determine a corresponding current display window ratio according to a current display image of the display screen, and determine a corresponding configuration value for a maximum backlight duty ratio of each backlight partition of the display screen based on the current display window ratio.
The backlight control device in the embodiment can determine the corresponding configuration value for the maximum backlight duty ratio of each backlight partition of the display screen through the current display window ratio, thereby achieving dynamic configuration, flexibly conforming to the characteristics of human eyes, and protecting the lamp tube.
In one embodiment, the apparatus further comprises:
the determining module 414 is configured to determine that a scene switching occurs in the display screen when a display brightness change corresponding to a backlight partition with a preset ratio in the display screen exceeds a brightness change threshold.
The backlight control device in the embodiment judges that the scene switching of the display screen occurs by the fact that the display brightness change corresponding to the backlight partition with the preset proportion exceeds the brightness change threshold value, and is efficient and convenient.
The division of each module in the backlight control device is merely for illustration, and in other embodiments, the backlight control device may be divided into different modules as needed to complete all or part of the functions of the backlight control device.
For specific limitations of the backlight control device, reference may be made to the above limitations of the backlight control method, which are not described herein again. The modules in the backlight control device can be wholly or partially implemented by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
Fig. 8 is a schematic diagram of an internal structure of an electronic device in one embodiment. As shown in fig. 8, the electronic device includes a processor and a memory connected by a system bus. Wherein, the processor is used for providing calculation and control capability and supporting the operation of the whole electronic equipment. The memory may include a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The computer program can be executed by a processor for implementing a backlight control method provided in the following embodiments. The internal memory provides a cached execution environment for the operating system computer programs in the non-volatile storage medium. The electronic device may be any electronic device including a display screen, such as a mobile phone, a television, a tablet computer, a PDA (Personal Digital Assistant), a Point of Sales (POS), a vehicle-mounted computer, and a wearable device.
The implementation of each module in the backlight control device provided in the embodiments of the present application may be in the form of a computer program. The computer program may be run on a terminal or a server. Program modules constituted by such computer programs may be stored on the memory of the electronic device. Which when executed by a processor, performs the steps of the method described in the embodiments of the present application.
The embodiment of the application also provides a computer readable storage medium. One or more non-transitory computer-readable storage media containing computer-executable instructions that, when executed by one or more processors, cause the processors to perform the steps of the backlight control method.
A computer program product comprising instructions which, when run on a computer, cause the computer to perform a backlight control method.
Any reference to memory, storage, database, or other medium used herein may include non-volatile and/or volatile memory. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM), which acts as external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), synchronous Link (Synchlink) DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and bus dynamic RAM (RDRAM).
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A backlight control method, the method comprising:
acquiring a first duration of time that a backlight duty ratio corresponding to a current backlight partition is greater than a preset maximum threshold;
when the first duration is greater than a first time threshold, reducing the maximum backlight duty ratio of the current backlight partition according to the preset maximum threshold;
and when the scene switching of the display screen is detected, restoring the maximum backlight duty ratio of each backlight partition of the display screen to a configuration value corresponding to the current display state of the display screen.
2. The method of claim 1, wherein obtaining the first duration that the backlight duty cycle corresponding to the current backlight partition is greater than the preset maximum threshold comprises:
counting the first duration time through a first timer corresponding to the current backlight partition;
the method further comprises the following steps:
when the maximum backlight duty ratio of the current backlight partition is reduced according to the preset maximum threshold value, resetting the first timer;
and when the scene of the display screen is switched, clearing the first timer.
3. The method of claim 2, further comprising:
counting a second duration time that the backlight duty ratio corresponding to the current backlight partition is larger than a preset maximum threshold value through a second timer corresponding to the current backlight partition;
and when the second duration is greater than a second time threshold, reducing the maximum backlight duty ratio of the current backlight partition according to the preset maximum threshold, and clearing the second timer to zero, wherein the second time threshold is greater than the first time threshold.
4. The method of any of claims 1 to 3, wherein the reducing the maximum backlight duty cycle of the current backlight partition according to the preset maximum threshold value comprises:
and gradually reducing the corresponding maximum backlight duty ratio of the current backlight partition according to the display image frame period until the maximum backlight duty ratio of the current backlight partition is equal to or less than the preset maximum threshold value.
5. The method according to any of claims 1 to 3, wherein after reducing the maximum backlight duty cycle of the current backlight partition according to the preset maximum threshold, further comprising:
acquiring a third duration time that the backlight duty ratio corresponding to the current backlight partition is smaller than a preset maximum threshold value;
increasing a maximum backlight duty cycle of the current backlight partition when the third duration is greater than a third time threshold.
6. The method of claim 1, wherein restoring the maximum backlight duty cycle of each backlight partition of the display screen to the configuration value corresponding to the current display state of the display screen comprises:
determining the corresponding current display window ratio according to the current display picture of the display screen;
and determining corresponding configuration values for the maximum backlight duty ratio of each backlight partition of the display screen based on the current display window duty ratio.
7. The method of claim 1, further comprising:
and when the display brightness change corresponding to the backlight partition with the preset proportion in the display screen exceeds a brightness change threshold value, judging that the scene switching of the display screen occurs.
8. A backlight control apparatus, comprising:
the backlight control device comprises an acquisition module, a display module and a control module, wherein the acquisition module is used for acquiring a first duration time that a backlight duty ratio corresponding to a current backlight partition is greater than a preset maximum threshold value;
a decreasing module, configured to decrease a maximum backlight duty ratio of the current backlight partition according to the preset maximum threshold when the first duration is greater than a first time threshold;
and the recovery module is used for recovering the maximum backlight duty ratio of each backlight partition of the display screen to a configuration value corresponding to the current display state of the display screen when the scene switching of the display screen is detected.
9. An electronic device comprising a memory and a processor, the memory having stored thereon a computer program, wherein the computer program, when executed by the processor, causes the processor to perform the steps of the method according to any of claims 1 to 7.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 7.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011191034.5A CN112382240A (en) | 2020-10-30 | 2020-10-30 | Backlight control method and device, electronic equipment and readable storage medium |
| PCT/CN2021/123190 WO2022089191A1 (en) | 2020-10-30 | 2021-10-12 | Backlight control method and apparatus, and electronic device, and computer readable storage medium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011191034.5A CN112382240A (en) | 2020-10-30 | 2020-10-30 | Backlight control method and device, electronic equipment and readable storage medium |
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| CN112382240A true CN112382240A (en) | 2021-02-19 |
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| WO (1) | WO2022089191A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114420040A (en) * | 2021-11-17 | 2022-04-29 | 高创(苏州)电子有限公司 | Control method and device of display panel, electronic equipment and storage medium |
| WO2022089191A1 (en) * | 2020-10-30 | 2022-05-05 | Oppo广东移动通信有限公司 | Backlight control method and apparatus, and electronic device, and computer readable storage medium |
| CN115346492A (en) * | 2021-05-13 | 2022-11-15 | 广州视源电子科技股份有限公司 | Power generation power adjustment method, display device, storage medium, and computer device |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1400488A (en) * | 2001-07-27 | 2003-03-05 | 恩益禧三菱电机视讯有限公司 | Liquid crystal device |
| CN1842923A (en) * | 2004-07-12 | 2006-10-04 | 索尼株式会社 | Drive device for back light unit and drive method therefor |
| CN101546537A (en) * | 2008-03-28 | 2009-09-30 | 北京京东方光电科技有限公司 | Drive method, compensation processor and drive device of liquid crystal display device |
| CN102004505A (en) * | 2010-11-03 | 2011-04-06 | 中航华东光电有限公司 | Low-temperature heating control module and method for liquid crystal display |
| CN102090150A (en) * | 2008-08-08 | 2011-06-08 | 夏普株式会社 | Backlight and display device using the same |
| CN102347014A (en) * | 2011-10-25 | 2012-02-08 | 中兴通讯股份有限公司 | Method and device for adjusting backlight brightness of display panel |
| CN103634976A (en) * | 2012-08-29 | 2014-03-12 | 深圳富泰宏精密工业有限公司 | Backlight module control circuit |
| CN103810986A (en) * | 2012-11-12 | 2014-05-21 | 三星显示有限公司 | Method of driving light source, light source apparatus for performing the method and display apparatus having the light source apparatus |
| CN105280147A (en) * | 2015-10-15 | 2016-01-27 | 珠海格力电器股份有限公司 | Control method and control system of display |
| CN106385744A (en) * | 2016-05-23 | 2017-02-08 | 孔东灿 | Light-emitting diode luminosity control system |
| CN106448570A (en) * | 2016-09-14 | 2017-02-22 | 深圳创维－Rgb电子有限公司 | High-power area dimming control method, control device and television |
| CN108364614A (en) * | 2018-02-08 | 2018-08-03 | 深圳创维－Rgb电子有限公司 | LED excess temperature protection methods, terminal and computer readable storage medium |
| CN109256095A (en) * | 2018-10-24 | 2019-01-22 | 深圳创维－Rgb电子有限公司 | LED current guard method, display and storage medium |
| CN109643526A (en) * | 2016-09-12 | 2019-04-16 | 夏普株式会社 | Control device and the liquid crystal display device for having the control device |
| CN110349544A (en) * | 2019-07-31 | 2019-10-18 | 惠州市德赛西威汽车电子股份有限公司 | A kind of anti-abnormal sound backlight driving method based on low duty ratio input |
| CN110415657A (en) * | 2018-04-26 | 2019-11-05 | 夏普株式会社 | Liquid crystal display device |
| CN111091788A (en) * | 2018-10-24 | 2020-05-01 | 三星电子株式会社 | Display device and driving method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105788562B (en) * | 2014-12-24 | 2018-05-08 | Tcl集团股份有限公司 | The brightness control method and system of a kind of display device |
| CN112382240A (en) * | 2020-10-30 | 2021-02-19 | Oppo广东移动通信有限公司 | Backlight control method and device, electronic equipment and readable storage medium |
-
2020
- 2020-10-30 CN CN202011191034.5A patent/CN112382240A/en active Pending
-
2021
- 2021-10-12 WO PCT/CN2021/123190 patent/WO2022089191A1/en active Application Filing
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1400488A (en) * | 2001-07-27 | 2003-03-05 | 恩益禧三菱电机视讯有限公司 | Liquid crystal device |
| CN1842923A (en) * | 2004-07-12 | 2006-10-04 | 索尼株式会社 | Drive device for back light unit and drive method therefor |
| CN101546537A (en) * | 2008-03-28 | 2009-09-30 | 北京京东方光电科技有限公司 | Drive method, compensation processor and drive device of liquid crystal display device |
| CN102090150A (en) * | 2008-08-08 | 2011-06-08 | 夏普株式会社 | Backlight and display device using the same |
| CN102004505A (en) * | 2010-11-03 | 2011-04-06 | 中航华东光电有限公司 | Low-temperature heating control module and method for liquid crystal display |
| CN102347014A (en) * | 2011-10-25 | 2012-02-08 | 中兴通讯股份有限公司 | Method and device for adjusting backlight brightness of display panel |
| CN103634976A (en) * | 2012-08-29 | 2014-03-12 | 深圳富泰宏精密工业有限公司 | Backlight module control circuit |
| CN103810986A (en) * | 2012-11-12 | 2014-05-21 | 三星显示有限公司 | Method of driving light source, light source apparatus for performing the method and display apparatus having the light source apparatus |
| CN105280147A (en) * | 2015-10-15 | 2016-01-27 | 珠海格力电器股份有限公司 | Control method and control system of display |
| CN106385744A (en) * | 2016-05-23 | 2017-02-08 | 孔东灿 | Light-emitting diode luminosity control system |
| CN109643526A (en) * | 2016-09-12 | 2019-04-16 | 夏普株式会社 | Control device and the liquid crystal display device for having the control device |
| CN106448570A (en) * | 2016-09-14 | 2017-02-22 | 深圳创维－Rgb电子有限公司 | High-power area dimming control method, control device and television |
| CN108364614A (en) * | 2018-02-08 | 2018-08-03 | 深圳创维－Rgb电子有限公司 | LED excess temperature protection methods, terminal and computer readable storage medium |
| CN110415657A (en) * | 2018-04-26 | 2019-11-05 | 夏普株式会社 | Liquid crystal display device |
| CN109256095A (en) * | 2018-10-24 | 2019-01-22 | 深圳创维－Rgb电子有限公司 | LED current guard method, display and storage medium |
| CN111091788A (en) * | 2018-10-24 | 2020-05-01 | 三星电子株式会社 | Display device and driving method thereof |
| CN110349544A (en) * | 2019-07-31 | 2019-10-18 | 惠州市德赛西威汽车电子股份有限公司 | A kind of anti-abnormal sound backlight driving method based on low duty ratio input |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022089191A1 (en) * | 2020-10-30 | 2022-05-05 | Oppo广东移动通信有限公司 | Backlight control method and apparatus, and electronic device, and computer readable storage medium |
| CN115346492A (en) * | 2021-05-13 | 2022-11-15 | 广州视源电子科技股份有限公司 | Power generation power adjustment method, display device, storage medium, and computer device |
| CN114420040A (en) * | 2021-11-17 | 2022-04-29 | 高创(苏州)电子有限公司 | Control method and device of display panel, electronic equipment and storage medium |
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| Publication number | Publication date |
|---|---|
| WO2022089191A1 (en) | 2022-05-05 |
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