CN112102787B - Backlight brightness control method, equipment, vehicle and storage medium of liquid crystal display screen - Google Patents
Backlight brightness control method, equipment, vehicle and storage medium of liquid crystal display screen Download PDFInfo
- Publication number
- CN112102787B CN112102787B CN201910523083.5A CN201910523083A CN112102787B CN 112102787 B CN112102787 B CN 112102787B CN 201910523083 A CN201910523083 A CN 201910523083A CN 112102787 B CN112102787 B CN 112102787B
- Authority
- CN
- China
- Prior art keywords
- brightness
- gradient
- difference value
- ith
- change
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
- G09G3/3413—Details of control of colour illumination sources
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
- G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The application discloses a backlight brightness control method, equipment, a vehicle and a storage medium of a liquid crystal display screen, wherein the method comprises the following steps: acquiring target brightness, set time and current brightness corresponding to a current display page; calculating a brightness difference value according to the current brightness and the target brightness, and determining a gradient coefficient table corresponding to the brightness difference value according to the brightness difference value; calculating a plurality of gradient difference values according to the gradient coefficient table and the brightness difference value; and executing brightness change operation according to the gradient gradual change values and the set time. Therefore, the method eliminates the condition of visual discomfort caused by backlight switching, and has the advantage of improving the comfort and safety of driving.
Description
Technical Field
The application relates to the technical field of instrument display, in particular to a backlight brightness control method, equipment, a vehicle and a storage medium of a liquid crystal display.
Background
Along with the rapid development of the automobile industry and the high-speed development of the liquid crystal screen technology, the liquid crystal screen is superior to the code breaking screen in visual perception, data precision and the like, so that various instruments in the automobile are gradually replaced by the liquid crystal screen from the code breaking screen.
In general, when a control operation is performed on a liquid crystal display, a backlight is switched, and the control of the backlight is usually performed by configuring brightness levels in advance, so as to realize the switching of brightness of different levels, however, a flash screen with an instant brightness abrupt change easily occurs at the instant of the switching of brightness of different levels, which may cause transient inadaptation of vision of a driver, affect driving comfort, and even cause driving safety.
Disclosure of Invention
The embodiment of the application provides a backlight brightness control method, equipment, a vehicle and a storage medium of a liquid crystal display screen, which can realize gradual change switching of the backlight brightness of an instrument, can avoid the condition of visual discomfort caused by backlight switching, and improves the driving comfort and safety.
An embodiment of the present application provides a method for controlling backlight brightness of a liquid crystal display, where the method includes:
acquiring target brightness, set time and current brightness corresponding to a current display page;
calculating a brightness difference value according to the current brightness and the target brightness, and determining a gradient coefficient table corresponding to the brightness difference value according to the brightness difference value;
calculating a plurality of gradient difference values according to the gradient coefficient table and the brightness difference value;
and executing brightness change operation according to the gradient gradual change values and the set time.
The implementation of the embodiment of the application has the following beneficial effects:
it can be seen that, in the embodiment of the present application, by acquiring the target brightness, the set time, and the current brightness corresponding to the current display page, then calculating a brightness difference value according to the current brightness and the target brightness, determining a gradient coefficient table corresponding to the brightness difference value according to the brightness difference value, and determining a gradient coefficient to control a backlight change speed and a change trend, so as to realize backlight conversion under different scenes, and meet various requirements of users; then dividing the set time into a plurality of change time periods, calculating a plurality of gradient difference values according to the gradient coefficient table, the brightness difference values and the change time periods, realizing gradient change of brightness, enabling the brightness change to be more similar to the perception effect of human eyes on light, and improving the comfort of vision; according to the gradient difference values and the change time, brightness change operation is sequentially carried out, brightness change is achieved, when brightness change operation is carried out, the change time period is equally divided into a plurality of task time periods in each change time period, gradient brightness gradient difference values are calculated according to the plurality of task time periods and the gradient difference values, brightness change in the change time period is achieved according to the plurality of task time periods and the gradient difference values, backlight gradient switching is optimized, soft gradient of backlight is achieved, the situation of brightness mutation is avoided, meanwhile, the situation of visual discomfort caused by backlight switching is avoided, and driving comfort and safety are improved.
In a second aspect, an embodiment of the present application provides a backlight brightness control device of a liquid crystal display, where the device includes:
the acquisition unit is used for acquiring target brightness, set time and current brightness corresponding to the current display page;
the determining unit is used for calculating a brightness difference value according to the current brightness and the target brightness, and determining a gradient coefficient table corresponding to the brightness difference value according to the brightness difference value;
the calculating unit is used for calculating a plurality of gradient differences according to the gradient coefficient table and the brightness difference value;
and the execution unit is used for executing brightness change operation according to the gradient gradual change values and the set time.
The implementation of the embodiment of the application has the following beneficial effects:
it can be seen that the backlight brightness control device applied to the liquid crystal display screen described in the embodiments of the present application includes: the acquisition unit is used for acquiring target brightness, set time and current brightness corresponding to the current display page; the determining unit is used for calculating a brightness difference value according to the current brightness and the target brightness, determining a gradient coefficient table corresponding to the brightness difference value according to the brightness difference value, and controlling the change speed and the change trend of backlight conversion through the gradient coefficient table so as to meet various requirements of users; the computing unit is used for computing a plurality of gradient difference values according to the gradient coefficient table and the brightness difference value, dividing the set time into a plurality of change time periods, and controlling backlight change by determining the gradient difference value in each change time period to realize gradient change of brightness, so that the brightness change is more similar to the perception effect of human eyes on light, and the visual comfort is improved; an execution unit for executing brightness change operation according to the gradient difference values and the set time, sequentially executing brightness change operation according to the gradient difference values and the change time to realize gradient change of brightness, dividing the change time period into a plurality of task time periods by equally dividing each change time period into a plurality of task time periods when executing brightness change operation, the gradient brightness gradient difference value is calculated according to the task time periods and the gradient difference value, the brightness gradient change in the change time period is realized according to the task time periods and the gradient difference value, the backlight gradient switching is optimized, the condition of brightness mutation is avoided, the condition of visual discomfort caused by the backlight switching is further avoided, the attractiveness of an instrument display interface is improved, and the driving comfort and safety are improved.
A third aspect of the present embodiments discloses an electronic device comprising a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and configured to be processed by the processor, the programs comprising instructions for performing the steps in the method according to the first aspect.
A fourth aspect of the embodiments discloses a computer readable storage medium, characterized in that the computer readable storage medium stores a computer program comprising program instructions, which when executed by a processor, cause the processor to perform the method according to the first aspect.
A fifth aspect of an embodiment of the application discloses a vehicle, characterized in that the vehicle comprises an electronic device according to the third aspect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a backlight brightness control method applied to a liquid crystal display according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a backlight brightness control device 200 applied to a liquid crystal display according to an embodiment of the present application.
Fig. 3 is a schematic structural diagram of an electronic device 300 according to an embodiment of the present application.
Fig. 4 is a flow chart of a gradient difference value calculation method provided in an embodiment of the present application.
Fig. 5 is a flowchart of a gradient brightness gradual change value calculating method according to an embodiment of the present application.
Fig. 6 is a schematic diagram of connection between a computer readable storage medium and a processor according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The terms "first," "second," "third," and "fourth" and the like in the description and in the claims and drawings are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, result, or characteristic described in connection with the embodiment may be included in at least one embodiment of the invention. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
Referring to fig. 1, fig. 1 is a flowchart of a backlight brightness control method applied to a liquid crystal display according to an embodiment of the present application, and as shown in fig. 1, the method includes:
and 101, acquiring target brightness, set time and current brightness corresponding to a current display page.
Optionally, receiving an action command, obtaining the brightness of the current display page as the current brightness, determining the target display page and the brightness level corresponding to the target display page according to the action command, obtaining the mapping relation between the brightness level and the brightness data, determining the brightness data corresponding to the brightness level as the target brightness according to the mapping relation, and obtaining a preset setting time, wherein the setting time is used for determining the time for changing the current brightness into the target brightness.
And 102, calculating a brightness difference value according to the current brightness and the target brightness, and determining a gradient coefficient table corresponding to the brightness difference value according to the brightness difference value.
Optionally, after the current brightness and the high target brightness are obtained, a third formula is obtained, and the current brightness and the target brightness are used as input of the third formula to obtain a brightness difference value between the brightness difference value and the target brightness, where the third formula includes: luminance difference = target luminance-current luminance.
Further, the brightness difference value is obtained, whether the brightness difference value is larger than zero or not is judged, if the brightness difference value is larger than zero, the target brightness is determined to be larger than the current brightness, a gradient coefficient table corresponding to the brightness difference value is determined to be a first gradient coefficient table, if the brightness difference value is smaller than zero, the target brightness is determined to be smaller than the current brightness, and a gradient coefficient table corresponding to the brightness difference value is determined to be a second gradient coefficient table; wherein the first gradation coefficient table includes: the system comprises a plurality of setting time periods and a plurality of gradual change coefficients corresponding to the setting time periods, wherein the gradual change coefficients are used for determining specific values of brightness change in the setting time periods.
And 103, calculating a plurality of gradient values according to the gradient coefficient table and the brightness difference value.
Optionally, the gradient coefficient table is obtained from a database, the number N of gradient coefficients in the gradient coefficient table is counted, N gradient coefficients in the gradient coefficient table are sequentially obtained, wherein,N>0; performing a difference calculation cycle according to the brightness difference value x and the N gradient coefficients wi to obtain N gradient difference values, wherein the preset gradient coefficient w i The change of (2) is similar to the exponential gradual incremental change, and the brightness difference value x belongs to a natural number; wherein the interpolation computation cycle includes: obtaining the ith gradient coefficient w i Obtaining the (i+1) th gradient coefficient w i+1 The ith gradient coefficient w i And the (i+1) th gradient coefficient w i+1 Substituting a preset first formula to calculate an ith gradient gradual change value, and letting i=i+1, wherein 0<i is less than or equal to N, and the preset first formula comprises: c i =x*（w i+1 -w i ) 100; acquiring a set time, acquiring the number N of gradient coefficients, equally dividing the set time into N change time periods, and establishing a mapping relation between the N change time periods and the N gradient differences, wherein the N change time periods and the N gradient differences are in one-to-one correspondence, and determining that the mapping relation is a gradient mapping relation.
Optionally, determining a total number N of the plurality of gradient differences, where N >0; acquiring an ith gradient gradual change value corresponding to an ith change time period, wherein 0< i < N; executing brightness gradual change difference calculation according to the ith change time period and the ith gradient gradual change difference to obtain an ith gradient brightness gradual change difference; and changing the brightness according to the ith gradient brightness gradual change value in the ith change time period, so that i=i+1.
Wherein, the brightness gradual change difference value calculation includes: acquiring gradient mapping relation between gradient values and change time periods, acquiring one-to-one correspondence relation between N change time periods and N gradient values according to the gradient mapping relation, and acquiring an ith gradient value corresponding to the ith change time period, wherein N is>0，0<i is less than or equal to N; obtaining a preset dividing rule, dividing the ith change time period according to the dividing rule to obtain X task time periods, wherein the preset dividing rule can comprise: obtaining the total of the ith variation time periodAnd substituting the total time length t into a division formula to divide the total time length t into X task time periods, wherein the division formula can comprise: x=t/10, not defined herein; obtaining an ith gradient difference value, obtaining a preset second formula, substituting the ith gradient difference value and the X task time into the second formula to obtain an ith gradient brightness gradient difference value, wherein the second formula can comprise: m is m i ＝c i The preferred value of the total time period t is 1s, and the total time period t can also comprise: 2s, 3s, 5s, etc., are not limited herein.
It can be seen that, in the embodiment of the present application, by acquiring the target brightness, the set time, and the current brightness corresponding to the current display page, calculating the brightness difference value according to the current brightness and the target brightness, determining the gradient coefficient table corresponding to the brightness difference value according to the brightness difference value, calculating a plurality of gradient difference values according to the gradient coefficient table and the brightness difference value, and finally, when brightness change operation is executed according to the gradient values and the set time, the gradient brightness gradient values are calculated, so that the gradient switching of the backlight is optimized, the visual comfort is improved, the condition that the visual discomfort is caused by the switching of the backlight is avoided, and the driving comfort and safety are improved.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a backlight brightness control device 200 applied to a liquid crystal display according to an embodiment of the present application, and as shown in fig. 2, the backlight brightness control device 200 includes:
an obtaining unit 201, configured to obtain a target brightness, a set time, and a current brightness corresponding to a current display page;
a determining unit 202, configured to calculate a luminance difference value according to the current luminance and the target luminance, and determine a gradient coefficient table corresponding to the luminance difference value according to the luminance difference value;
a calculating unit 203, configured to calculate a plurality of gradient differences according to the gradient coefficient table and the brightness difference;
the execution unit 204 is configured to execute a brightness change operation according to the gradient differences and the set time.
In one possible example, the obtaining unit 201 is configured to obtain the target brightness, the set time, and the current brightness aspect corresponding to the current display page, where the obtaining unit is specifically configured to: receiving an action command, acquiring the brightness of a current display page as the current brightness, determining the brightness level corresponding to a target display page and the target display page according to the action command, acquiring the mapping relation between the brightness level and brightness data, determining the brightness data corresponding to the brightness level as the target brightness according to the mapping relation, and acquiring preset setting time, wherein the setting time is used for determining the time for changing the current brightness into the target brightness.
In one possible example, for calculating a luminance difference value according to the current luminance and the target luminance, and determining a gradient coefficient table corresponding to the luminance difference value according to the luminance difference value, the determining unit 202 is specifically configured to: after the current brightness and the high target brightness are obtained, a third formula is obtained, the current brightness and the target brightness are used as the input of the third formula, and the brightness difference value between the brightness difference value and the target brightness is obtained, wherein the third formula comprises: luminance difference = target luminance-current luminance; acquiring the brightness difference value, judging whether the brightness difference value is larger than zero, if so, determining that the target brightness is larger than the current brightness, determining that a gradient coefficient table corresponding to the brightness difference value is a first gradient coefficient table, if so, determining that the target brightness is smaller than the current brightness, and determining that the gradient coefficient table corresponding to the brightness difference value is a second gradient coefficient table; wherein the first gradation coefficient table includes: the system comprises a plurality of setting time periods and a plurality of gradual change coefficients corresponding to the setting time periods, wherein the gradual change coefficients are used for determining specific values of brightness change in the setting time periods.
In one possible example, the calculating unit 203 is specifically configured to, according to the gradient coefficient table and the brightness difference value, calculate a plurality of gradient difference values: acquiring N gradient coefficients w in the gradient coefficient table i Wherein N is>0，0<i is less than or equal to N; will beThe brightness difference value x and N gradient coefficients w i Substituting a preset first formula to calculate N gradient difference values c i Wherein the first formula comprises: c i ＝x*(w i+1 -w i ) 100; equally dividing the change time into N change time periods, and determining the N change time periods and N gradient gradual change values c i Is a gradual mapping of (a) to (b).
In one possible example, the execution unit 204 is configured to execute the brightness change operation according to the plurality of gradient differences and the set time, and the specific function is to: determining a total number N of the plurality of gradient differences, wherein N>0; obtaining an ith gradient gradual change value corresponding to an ith change time period, wherein 0<i<N; executing brightness gradual change difference calculation according to the ith change time period and the ith gradient gradual change difference to obtain an ith gradient brightness gradual change difference; changing the brightness according to the ith gradient brightness gradual change value in the ith change time period to ensure that i=i+1; wherein, the brightness gradual change difference value calculation includes: dividing the ith change time period to obtain X task time periods; obtaining the ith gradient difference value c i The ith gradient difference value c i Substituting the obtained value with the X task time periods into a preset second formula to calculate to obtain the ith gradient brightness gradual change difference value m i Wherein the second formula comprises: m is m i ＝c i /X。
It can be seen that the embodiments of the present application describe a backlight brightness control device applied to a liquid crystal display, where the device includes: the acquisition unit is used for acquiring target brightness, set time and current brightness corresponding to the current display page; the determining unit is used for calculating a brightness difference value according to the current brightness and the target brightness, and determining a gradient coefficient table corresponding to the brightness difference value according to the brightness difference value; the calculating unit is used for calculating a plurality of gradient differences according to the gradient coefficient table and the brightness difference value; an execution unit for executing brightness change operation according to the gradient difference values and the set time, calculating the gradient difference values according to the gradient coefficient table and the brightness difference value, the brightness change operation is carried out according to the gradient gradual change difference values, so that gradient gradual change of brightness is realized, the attractiveness of an instrument display interface is improved, and the driving safety and the driving comfort are improved.
Referring to fig. 3, fig. 3 is a schematic structural diagram of an electronic device 300 provided in an embodiment of the present application, where the vehicle control device 300 includes a processor, a communication interface, and one or more programs, where the one or more programs are stored in the memory and configured to be executed by the processor, and the programs include instructions for executing the following steps:
acquiring target brightness, set time and current brightness corresponding to a current display page;
calculating a brightness difference value according to the current brightness and the target brightness, and determining a gradient coefficient table corresponding to the brightness difference value according to the brightness difference value;
calculating a plurality of gradient difference values according to the gradient coefficient table and the brightness difference value;
and executing brightness change operation according to the gradient gradual change values and the set time.
It can be seen that, in the embodiment of the present application, the electronic device first obtains the target brightness, the set time, and the current brightness corresponding to the current display page; secondly, calculating a brightness difference value according to the current brightness and the target brightness, and determining a gradient coefficient table corresponding to the brightness difference value according to the brightness difference value; then, calculating a plurality of gradient differences according to the gradient coefficient table and the brightness difference value; and finally, executing brightness change operation according to the gradient gradual change values and the set time. Therefore, by implementing the embodiment of the application, gradual change switching of the backlight brightness of the instrument can be realized, the condition that the backlight switching causes visual discomfort is avoided, the driving comfort and safety are improved, and the user experience is improved.
Referring to fig. 4, fig. 4 is a flowchart of a gradient difference calculating method according to an embodiment of the present application, as shown in fig. 4, the method includes:
Optionally, receiving an action command, obtaining the brightness of the current display page as the current brightness, determining the target display page and the brightness level corresponding to the target display page according to the action command, obtaining the mapping relation between the brightness level and the brightness data, determining the brightness data corresponding to the brightness level as the target brightness according to the mapping relation, and obtaining a preset setting time, wherein the setting time is used for determining the time for changing the current brightness into the target brightness.
Further, the brightness difference value is obtained, whether the brightness difference value is larger than zero or not is judged, if the brightness difference value is larger than zero, the target brightness is determined to be larger than the current brightness, a gradient coefficient table corresponding to the brightness difference value is determined to be a first gradient coefficient table, if the brightness difference value is smaller than zero, the target brightness is determined to be smaller than the current brightness, and a gradient coefficient table corresponding to the brightness difference value is determined to be a second gradient coefficient table; wherein the first gradation coefficient table includes: the system comprises a plurality of setting time periods and a plurality of gradual change coefficients corresponding to the setting time periods, wherein the gradual change coefficients are used for determining specific values of brightness change in the setting time periods.
Optionally, the gradient coefficient table is obtained from a database, the number N of gradient coefficients in the gradient coefficient table is counted, and N gradient coefficients in the gradient coefficient table are sequentially obtained, wherein N is greater than 0.
Optionally, according to the brightness difference value x and N gradient coefficients w i Performing a difference calculation cycle to obtain N gradient difference values; wherein, the liquid crystal display device comprises a liquid crystal display device,the interpolation calculation cycle includes: obtaining the ith gradient coefficient w i Obtaining the (i+1) th gradient coefficient w i+1 The ith gradient coefficient w i And the (i+1) th gradient coefficient w i+1 Substituting a preset first formula to calculate an ith gradient gradual change value, and letting i=i+1, wherein 0<i is less than or equal to N, and the preset first formula comprises: c i ＝x*(w i+1 -w i )/100。
And 404, equally dividing the set time into N change time periods, and determining a gradual change mapping relation between the N change time periods and N gradient gradual change values.
Optionally, acquiring a set time, acquiring the number N of gradient coefficients, equally dividing the set time into N change time periods, and establishing a mapping relationship between the N change time periods and the N gradient difference values, where the N change time periods and the N gradient difference values are in one-to-one correspondence, and determining that the mapping relationship is a gradient mapping relationship.
It can be seen that by acquiring the gradient coefficient table, calculating a plurality of gradient differences according to the gradient coefficient table and the brightness difference, that is, by introducing a time factor, a linear gradient factor and a linear gradient control coefficient, realizing backlight gradient, simultaneously acquiring the number of gradient coefficients in the gradient coefficient table to divide the set time, and obtaining a plurality of change time periods, establishing a mapping relation between a plurality of gradient difference values and the plurality of change time periods, realizing quick searching of the gradient difference values during backlight gradient, simultaneously realizing exponential gradient increasing trend of backlight change so as to approach the perception effect of human eyes on light rays, and improving visual comfort.
Referring to fig. 5, fig. 5 is a flowchart of a gradient brightness gradient difference calculating method according to an embodiment of the present application, as shown in fig. 5, the method includes:
Optionally, a plurality of gradient difference values are obtained, the total number N of the gradient difference values is calculated, the gradient mapping relation between the gradient difference values and the change time periods is obtained, the one-to-one correspondence relation between the N change time periods and the N gradient difference values is obtained according to the gradient mapping relation, and the ith gradient difference value corresponding to the ith change time period is obtained, wherein N is more than 0, and 0 is less than or equal to N.
Optionally, a preset dividing rule is obtained, and the ith change time period is divided according to the dividing rule to obtain X task time periods, where the preset dividing rule may include: the method comprises the steps of obtaining total time length t of an ith change time period, substituting the total time length t into a division formula to divide the total time length t into X task time periods, wherein the division formula can comprise: x=t/10, and is not limited herein.
Optionally, obtaining an ith gradient difference value, obtaining a preset second formula, and substituting the ith gradient difference value and the X task times into the second formula to obtain an ith gradient brightness gradient difference value, where the second formula may include: m is m i ＝c i X is not limited herein.
It can be seen that by dividing the change time period into a plurality of task time periods and calculating the gradient brightness gradient difference value according to the plurality of task time periods and the gradient difference value, the change value of the brightness gradient is embodied, the brightness gradient is realized according to the task time period and the gradient brightness gradient difference value in the change time period, the visual comfort is improved, the condition of abrupt brightness change is avoided, and the driving safety and the driving comfort are improved.
Referring to fig. 6, fig. 6 is a schematic diagram illustrating connection between a computer readable storage medium 600 and a processor 601 according to an embodiment of the present application, as shown in fig. 6, the computer readable storage medium 600 includes a computer program 602, and the computer program 602 includes: the computer readable medium 600 is connected to the processor 601, and the computer readable medium 600 transmits the program instructions to the processor 601, and the processor 601 executes the program instructions to cause 602 to execute the backlight brightness control method applied to the liquid crystal display as described above.
The embodiment of the application also provides a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, and the computer program makes a computer execute part or all of the steps of any one of the backlight brightness control methods applied to a liquid crystal display screen as described in the embodiment of the method.
Embodiments of the present application also provide a computer program product comprising a non-transitory computer-readable storage medium storing a computer program operable to cause a computer to perform some or all of the steps of any one of the backlight brightness control methods applied to a liquid crystal display screen as set forth in the method embodiments above.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
In the several embodiments provided in this application, it should be understood that the disclosed apparatus may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, such as the division of the units, merely a logical function division, and there may be additional manners of dividing the actual implementation, such as multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, or may be in electrical or other forms.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units described above may be implemented either in hardware or in software program modules.
The foregoing is a description of embodiments of the present application, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the embodiments of the present application, and these improvements and modifications are also considered as the protection scope of the present application.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and additional implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order from that shown or discussed, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.
Logic and/or steps represented in the flowcharts or otherwise described herein, e.g., a ordered listing of executable instructions for performing logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). In addition, the computer readable medium may even be paper or other suitable medium on which the program is printed, as the program may be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.
It is to be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be performed in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for performing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
Those of ordinary skill in the art will appreciate that performing all or part of the steps carried by the above-described method may be accomplished by a program stored on a computer-readable storage medium, which when executed, comprises one or a combination of the steps of the method embodiments.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing module, or each unit may exist alone physically, or two or more units may be integrated in one module. The integrated modules described above may be implemented in hardware or in software functional modules. The integrated modules may also be stored in a computer readable storage medium if implemented as software functional modules and sold or used as a stand-alone product.
The above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, or the like. While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (11)
1. A method for controlling backlight brightness of a liquid crystal display, the method comprising:
acquiring target brightness, set time and current brightness corresponding to a current display page;
calculating a brightness difference value according to the current brightness and the target brightness, and determining a gradient coefficient table corresponding to the brightness difference value according to the brightness difference value;
calculating a plurality of gradient difference values according to the gradient coefficient table and the brightness difference value;
executing brightness change operation according to the gradient gradual change difference values and the set time; the calculating the gradient difference values according to the gradient coefficient table and the brightness difference value comprises the following steps:
acquiring N gradient coefficients w in the gradient coefficient table i Wherein N is more than 0, and i is more than 0 and less than or equal to N;
the brightness difference value x and N gradient coefficients w i Substituting a preset first formula to calculate N gradient difference values c i Wherein the first formula comprises: c i ＝x*(w i+1 -w i )/100；
Equally dividing the set time into N change time periods, and determining the N change time periods and N gradient gradual change values c i Is a gradual mapping of (a) to (b).
2. The method of claim 1, wherein performing the brightness change operation according to the plurality of gradient gradation values and the set time comprises:
determining the total number N of the gradient difference values, wherein N is more than 0;
obtaining an ith gradient gradual change value corresponding to an ith change time period, wherein i is more than 0 and less than N;
executing brightness gradual change difference calculation according to the ith change time period and the ith gradient gradual change difference to obtain an ith gradient brightness gradual change difference;
and changing the brightness according to the ith gradient brightness gradual change value in the ith change time period, so that i=i+1.
3. The method of claim 2, wherein performing a brightness gradation difference calculation from the i-th variation period and the i-th gradient gradation difference comprises:
dividing the ith change time period to obtain X task time periods;
obtaining the ith gradient difference value c i The ith gradient gradual change value c i Substituting the obtained value with the X task time periods into a preset second formula to calculate to obtain the ith gradient brightness gradual change difference value m i Wherein the second formula comprises: m is m i ＝c i /X。
4. The method of claim 1, wherein determining a gradient coefficient table corresponding to the luminance difference value according to the luminance difference value comprises:
and judging whether the brightness difference value is larger than zero, if the brightness difference value is larger than zero, determining that the gradient coefficient table corresponding to the brightness difference value is a first gradient coefficient table, and if the brightness difference value is smaller than zero, determining that the gradient coefficient table corresponding to the brightness difference value is a second gradient coefficient table.
5. A backlight brightness control apparatus for a liquid crystal display, the apparatus comprising:
the acquisition unit is used for acquiring target brightness, set time and current brightness corresponding to the current display page;
the determining unit is used for calculating a brightness difference value according to the current brightness and the target brightness, and determining a gradient coefficient table corresponding to the brightness difference value according to the brightness difference value;
the calculating unit is used for calculating a plurality of gradient differences according to the gradient coefficient table and the brightness difference value;
the execution unit is used for executing brightness change operation according to the gradient gradual change values and the set time; the computing unit is specifically configured to:
acquiring N gradient coefficients w in the gradient coefficient table i Wherein N is more than 0, and i is more than 0 and less than or equal to N;
the brightness difference value x and N gradient coefficients w i Substituting a preset first formula to calculate N gradient difference values c i Wherein the first formula comprises: c i ＝x*(w i+1 -w i )/100；
Equally dividing the set time into N change time periods, and determining the N change time periods and N gradient gradual change values c i Is a gradual mapping of (a) to (b).
6. The apparatus according to claim 5, wherein the execution unit is specifically configured to, in terms of performing the brightness change operation according to the plurality of gradient gradation values and the set time:
determining the total number N of the gradient difference values, wherein N is more than 0;
obtaining an ith gradient gradual change value corresponding to an ith change time period, wherein i is more than 0 and less than N;
executing brightness gradual change difference calculation according to the ith change time period and the ith gradient gradual change difference to obtain an ith gradient brightness gradual change difference;
and changing the brightness according to the ith gradient brightness gradual change value in the ith change time period, so that i=i+1.
7. The apparatus according to claim 5, wherein the execution unit is specifically configured to perform an aspect of the brightness change operation according to the plurality of gradient gradation values and the change time:
dividing the ith change time period to obtain X task time periods;
obtaining the ith gradient difference value c i The ith gradient gradual change value c i Substituting the obtained value with the X task time periods into a preset second formula to calculate to obtain the ith gradient brightness gradual change difference value m i Wherein the second formula comprises: m is m i ＝c i /X。
8. The apparatus according to claim 5, wherein the determining unit is specifically configured to determine, according to the luminance difference value, a gradient coefficient table aspect corresponding to the luminance difference value:
and judging whether the brightness difference value is larger than zero, if the brightness difference value is larger than zero, determining that the gradient coefficient table corresponding to the brightness difference value is a first gradient coefficient table, and if the brightness difference value is smaller than zero, determining that the gradient coefficient table corresponding to the brightness difference value is a second gradient coefficient table.
9. An electronic device comprising a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and configured to be processed by the processor, the programs comprising instructions for performing the steps of the method of any of claims 1-4.
10. A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program comprising program instructions which, when executed by a processor, cause the processor to perform the method of any of claims 1-4.
11. A vehicle, characterized in that it comprises an electronic device as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910523083.5A CN112102787B (en) | 2019-06-17 | 2019-06-17 | Backlight brightness control method, equipment, vehicle and storage medium of liquid crystal display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910523083.5A CN112102787B (en) | 2019-06-17 | 2019-06-17 | Backlight brightness control method, equipment, vehicle and storage medium of liquid crystal display screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112102787A CN112102787A (en) | 2020-12-18 |
| CN112102787B true CN112102787B (en) | 2023-05-09 |
Family
ID=73748657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910523083.5A Active CN112102787B (en) | 2019-06-17 | 2019-06-17 | Backlight brightness control method, equipment, vehicle and storage medium of liquid crystal display screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112102787B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113438458A (en) * | 2021-06-11 | 2021-09-24 | 屏丽科技(深圳)有限公司 | Method for optimizing initial brightness of time sequence color mixing liquid crystal projection |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109473067A (en) * | 2018-12-13 | 2019-03-15 | 青岛海信电器股份有限公司 | A kind of back light brightness regulating method, device and display equipment |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101546537B (en) * | 2008-03-28 | 2011-02-16 | 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 |
| CN103077684B (en) * | 2013-01-23 | 2015-09-16 | 京东方科技集团股份有限公司 | A kind of backlight adjusting method, device and display screen |
| CN106875914B (en) * | 2017-04-21 | 2019-07-23 | 武汉华星光电技术有限公司 | A kind of driving method and liquid crystal display of the gelatinization of LCD brightness dynamic analog |
| CN109064971B (en) * | 2018-08-24 | 2020-10-27 | 深圳市沃特沃德股份有限公司 | Method and device for adjusting backlight of OLED (organic light emitting diode) screen |
-
2019
- 2019-06-17 CN CN201910523083.5A patent/CN112102787B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109473067A (en) * | 2018-12-13 | 2019-03-15 | 青岛海信电器股份有限公司 | A kind of back light brightness regulating method, device and display equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112102787A (en) | 2020-12-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11076147B2 (en) | Stereoscopic display of objects | |
| CN106997744A (en) | The control method and control device of screen intensity | |
| CN107317853B (en) | Method, device and system for displaying dynamic effect of message popup window | |
| CN109241420B (en) | Application home page content recommendation method and device, computer equipment and storage medium | |
| CN107993616A (en) | A kind of method for displaying image and device | |
| CN112102787B (en) | Backlight brightness control method, equipment, vehicle and storage medium of liquid crystal display screen | |
| CN111935428A (en) | HUD image brightness adjusting system and implementation method | |
| CN106445308A (en) | Control method of split screens interface and terminals thereof | |
| CN106161976B (en) | Auto iris control method and device for protection and monitor field | |
| CN110648634B (en) | Backlight brightness determining and adjusting method and device, storage medium and electronic equipment | |
| CN105739936B (en) | A kind of user terminal control method and user terminal | |
| CN112233631B (en) | Automatic screen brightness adjusting device and method for all-solid tablet personal computer | |
| CN116181183B (en) | Vehicle window control method and device, vehicle and storage medium | |
| CN109324748B (en) | Equipment control method, electronic equipment and storage medium | |
| CN105678696A (en) | Image acquisition method and electronic equipment | |
| EP4159563A1 (en) | Hybrid vehicle torque control method and apparatus, storage medium, and electronic device | |
| CN112350908B (en) | Control method and device of intelligent household equipment | |
| CN111783444B (en) | Text vector generation method and device | |
| CN104461425A (en) | Screen content display adjusting method and device and terminal | |
| CN111950162B (en) | Modeling method and device and electronic equipment | |
| CN117881061A (en) | Light adjusting and controlling method and device, equipment and medium of operation shadowless lamp | |
| CN110174867B (en) | Power supply gear control system and method based on CANoe | |
| CN111988897B (en) | Dimming method and device of dimmer, storage medium and dimmer | |
| CN116674377A (en) | Method, device, equipment and storage medium for switching theme of vehicle-mounted instrument | |
| CN116935804A (en) | Screen backlight brightness adjusting method, device, equipment and medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |