CN113707101B - Mini LED backlight control method, device and related equipment - Google Patents

Mini LED backlight control method, device and related equipment Download PDF

Info

Publication number
CN113707101B
CN113707101B CN202110969298.7A CN202110969298A CN113707101B CN 113707101 B CN113707101 B CN 113707101B CN 202110969298 A CN202110969298 A CN 202110969298A CN 113707101 B CN113707101 B CN 113707101B
Authority
CN
China
Prior art keywords
original
brightness
data
target
information
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
Application number
CN202110969298.7A
Other languages
Chinese (zh)
Other versions
CN113707101A (en
Inventor
周建华
魏豪
袁选
蔡胜平
胡向峰
陈赞添
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Skyworth RGB Electronics Co Ltd
Original Assignee
Shenzhen Skyworth RGB Electronics Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shenzhen Skyworth RGB Electronics Co Ltd filed Critical Shenzhen Skyworth RGB Electronics Co Ltd
Priority to CN202110969298.7A priority Critical patent/CN113707101B/en
Publication of CN113707101A publication Critical patent/CN113707101A/en
Application granted granted Critical
Publication of CN113707101B publication Critical patent/CN113707101B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
    • G09G3/3426—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines the different display panel areas being distributed in two dimensions, e.g. matrix
    • 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

Abstract

The invention discloses a Mini LED backlight control method, a device and related equipment, wherein the method comprises the following steps: acquiring original brightness data, wherein the original brightness data comprises A pieces of original brightness information; interpolating based on adjacent original brightness information in the original brightness data and acquiring target brightness data, wherein the adjacent original brightness information is used for controlling the display brightness of adjacent positions in a Mini LED backlight area, the target brightness data comprises B pieces of target brightness information, and B is greater than A; the Mini LED backlight area is brightness controlled based on the target brightness data. Compared with the prior art, the method and the device have the advantages that the target brightness data containing more target brightness information are obtained based on the interpolation of the original brightness data, so that more sub-areas of the Mini LED backlight area can be independently controlled, the requirements of the Mini LED on the number of the sub-areas and the number of the brightness information of the sub-areas are met, and the display capability and the image quality are improved.

Description

Mini LED backlight control method, device and related equipment
Technical Field
The invention relates to the technical field of display control, in particular to a Mini LED backlight control method, a device and related equipment.
Background
With the development of scientific technology, especially the continuous progress of display technology, the requirements of people on the display performance of each display device (such as a television) are higher and higher. The advent of Mini LED technology has brought LED screens directly into an era comparable to OLED effects. In the Mini LED technology, a plurality of miniaturized LEDs are used as backlight sources, and each miniaturized LED can be independently controlled by matching with a television backlight area adjusting technology. When the number of the LEDs is small enough and the number of the LEDs is large enough, one miniaturized LED can be used as a backlight source of one pixel, and therefore display image quality is improved.
The Mini LED backlight area generally consists of thousands of LEDs, and each Mini LED can be controlled independently in an optimal state. Conventionally, for a Mini LED backlight area (for example, a backlight area of a television in which Mini LEDs are backlit), an image quality Chip or a main System On Chip (SOC) is generally used to divide the backlight area into sub-areas, luminance information for each sub-area is generated, and display luminance of the corresponding sub-area is controlled based on each luminance information. The problem in the prior art is that the processing capability of the image quality chip and the SOC is limited, the number of the divided sub-regions and the number of the correspondingly generated luminance information cannot meet the requirement of the current Mini LED on the number of the sub-regions and the number of the correspondingly generated luminance information, and the improvement of the display capability and the image quality is not facilitated.
Thus, there is a need for improvement and development of the prior art.
Disclosure of Invention
The invention mainly aims to provide a method, a device and related equipment for controlling a Mini LED backlight, and aims to solve the problems that in the prior art, an image quality chip or a main SOC divides a backlight area into sub-areas, when brightness information of each sub-area is generated, the processing capacity of the image quality chip and the SOC is limited, the number of the divided sub-areas and the number of the correspondingly generated brightness information cannot meet the requirements of the number of the current Mini LED sub-areas and the number of the corresponding brightness information, and the display capacity and the image quality are not favorably improved.
In order to achieve the above object, a first aspect of the present invention provides a method for controlling a Mini LED backlight, wherein the method comprises:
acquiring original brightness data, wherein the original brightness data comprises A pieces of original brightness information;
interpolating based on adjacent original brightness information in the original brightness data and acquiring target brightness data, wherein the adjacent original brightness information is used for controlling the display brightness of adjacent positions in a Mini LED backlight area, the target brightness data comprises B pieces of target brightness information, and B is greater than A;
and controlling the brightness of the Mini LED backlight area based on the target brightness data.
Optionally, the obtaining the original brightness data includes:
receiving brightness data to be processed sent by a system-level chip;
checking the brightness data to be processed to obtain a checking result;
when the verification result is that the data is correct, acquiring original brightness data based on the brightness data to be processed;
and when the verification result is that the data is incorrect, discarding the brightness data to be processed.
Optionally, the checking the luminance data to be processed to obtain the checking result includes:
calculating to obtain a target check code based on the received brightness data to be checked;
when the target check code is consistent with the received check code data, the check result is data correct;
and when the target check code is inconsistent with the received check code data, the check result is data incorrect.
Optionally, the interpolating based on the adjacent original luminance information in the original luminance data and obtaining the target luminance data includes:
dividing the Mini LED backlight area into A original sub-areas, wherein each original sub-area corresponds to one original brightness information;
and calculating the mean value of the original brightness information corresponding to the adjacent original subregions to be used as interpolated brightness information, and using the set of all the interpolated brightness information and all the original brightness information as target brightness data.
Optionally, the a original sub-regions include original sub-regions in Y rows and X columns, the calculating an average value of original luminance information corresponding to adjacent original sub-regions and using the average value as interpolated luminance information, and using a set of all the interpolated luminance information and all the original luminance information as target luminance data includes:
respectively calculating the mean value of original brightness information corresponding to two adjacent original subregions in each line and taking the mean value as interpolated brightness information, taking each interpolated brightness information and each original brightness information as target brightness information, acquiring a set of B pieces of target brightness information and taking the set of B pieces of target brightness information as the target brightness data;
wherein, A = X Y, B = X Y + (X-1) Y.
Optionally, the calculating an average of original luminance information corresponding to two adjacent original sub-regions in each line and using the average as interpolated luminance information, taking each piece of interpolated luminance information and each piece of original luminance information as target luminance information, and acquiring a set of B pieces of target luminance information and using the set as the target luminance data includes:
for each line, respectively acquiring the values Mji and Mki of the original brightness information corresponding to any two adjacent original subregions, and calculating the value (Mji + Mki)/2 of the interpolation brightness information corresponding to the two adjacent original subregions;
taking all of the X × Y pieces of original luminance information and all of the (X-1) × Y pieces of interpolated luminance information as target luminance information, acquiring B pieces of target luminance information, and taking a set of all of the target luminance information as the target luminance data;
wherein Mji is a value of original luminance information corresponding to an original sub-region in the ith row and the jth column, mki is a value of original luminance information corresponding to an original sub-region in the ith row and the kth column, and (Mji + Mki)/2 is a value of interpolated luminance information inserted between the jth column and the kth column in the ith row, k = j +1, Y ≧ i ≧ 1, (X-1) ≧ j ≧ 1.
Optionally, the performing brightness control on the Mini LED backlight area based on the target brightness data includes:
dividing the Mini LED backlight area into B target sub-areas based on the target brightness data;
and respectively controlling the brightness of the B target sub-areas based on the B target brightness information.
The second aspect of the present invention provides a Mini LED backlight control device, wherein the device comprises:
the data acquisition module is used for acquiring original brightness data, wherein the original brightness data comprises A pieces of original brightness information;
the interpolation module is used for carrying out interpolation based on adjacent original brightness information in the original brightness data and obtaining target brightness data, wherein the adjacent original brightness information is used for controlling the display brightness of adjacent positions in a Mini LED backlight area, the target brightness data comprises B pieces of target brightness information, and B is larger than A;
and the control module is used for carrying out brightness control on the Mini LED backlight area based on the target brightness data.
A third aspect of the present invention provides an intelligent terminal, where the intelligent terminal includes a memory, a processor, and a Mini LED backlight control program stored in the memory and executable on the processor, and the Mini LED backlight control program implements any one of the steps of the Mini LED backlight control method when executed by the processor.
A fourth aspect of the present invention provides a computer-readable storage medium, in which a Mini LED backlight control program is stored, and when being executed by a processor, the Mini LED backlight control program implements any one of the steps of the Mini LED backlight control method.
Therefore, the scheme of the invention obtains the original brightness data, wherein the original brightness data comprises A pieces of original brightness information; interpolating based on adjacent original brightness information in the original brightness data and acquiring target brightness data, wherein the adjacent original brightness information is used for controlling the display brightness of adjacent positions in a Mini LED backlight area, the target brightness data comprises B pieces of target brightness information, and B is greater than A; and controlling the brightness of the Mini LED backlight area based on the target brightness data. Compared with the scheme of controlling the display brightness of each sub-area directly based on the brightness information generated by the image quality chip or the main SOC in the prior art, the scheme of the invention performs interpolation based on the acquired original brightness data to acquire the target brightness data containing more target brightness information, and one target brightness information can be used for controlling the brightness of one sub-area. Therefore, based on the scheme of the invention, independent brightness control can be carried out on more sub-areas of the Mini LED backlight area, the requirement of the Mini LED on the number of the sub-areas and the number of the corresponding brightness information can be favorably met, and the display capability and the image quality can be favorably improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic flow chart of a method for controlling a Mini LED backlight according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating the step S100 in FIG. 1 according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating the step S102 in FIG. 2 according to an embodiment of the present invention;
FIG. 4 is a flowchart illustrating a detailed process of step S200 in FIG. 1 according to an embodiment of the present invention;
FIG. 5 is a flowchart illustrating the step S300 in FIG. 1 according to an embodiment of the present invention;
fig. 6 is a schematic diagram illustrating division of a Mini LED backlight area according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a Mini LED television backlight driving component module according to an embodiment of the present invention;
fig. 8 is a schematic diagram of a processing flow of an MCU in the prior art according to an embodiment of the present invention;
fig. 9 is a schematic diagram of interpolation division of a Mini LED backlight area according to an embodiment of the present invention;
fig. 10 is a schematic processing flow diagram of an MCU according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a Mini LED backlight control device according to an embodiment of the present invention;
fig. 12 is a schematic block diagram of an internal structure of an intelligent terminal according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
As used in this specification and the appended claims, the term "if" may be interpreted contextually as "when 8230that is," or "once" or "in response to a determination" or "in response to a detection". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings of the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and it will be appreciated by those skilled in the art that the present invention may be practiced without departing from the spirit and scope of the present invention, and therefore the present invention is not limited by the specific embodiments disclosed below.
In contemporary society, with the development of scientific technology, especially the continuous progress of display technology, the requirements of display performance of each display device (such as a television) are higher and higher. The advent of Mini LED technology has brought LED screens directly into an era comparable to OLED effects. In the Mini LED technology, thousands of miniaturized LEDs are used as backlight sources, and each miniaturized LED can be individually controlled by using a television backlight area adjustment (Local dimming) technology. When the LEDs are small enough and the number of the LEDs is large enough, one miniaturized LED can be used as the backlight source of one pixel in the backlight area to achieve infinite contrast, and therefore the display image quality of the equipment based on the Mini LED backlight is improved.
The Mini LED backlight area generally consists of thousands of LEDs, and each Mini LED can be controlled independently in an optimal state, which means that each LED lamp needs to be driven correspondingly and can display corresponding brightness according to the gray scale displayed on the screen. In the related art, for a Mini LED backlight area (for example, a backlight area of a television in which Mini LEDs are used as backlight), an image quality Chip or a main System On Chip (SOC) divides the backlight area into a plurality of sub-areas, generates luminance information of each sub-area, and transmits the luminance information to a backlight control circuit, and the backlight control circuit controls display luminance of LEDs corresponding to the corresponding sub-area according to each transmitted luminance information. Theoretically, the sub-regions of each display screen can correspond to the backlight one-to-one, and the more the sub-regions of the screen are divided, the better the image quality display effect is. Due to the occurrence of the Mini LED technology, the backlight may be composed of tens of thousands of LEDs and independent control is implemented, but the strongest processing capability of the current image quality chip or SOC can only implement division into 8 thousands of sub-regions, which cannot meet the requirements of the current ten thousands of sub-regions of the Mini LED, and cannot implement one-to-one corresponding control of the backlight of each pixel point between the ten thousands of Mini LEDs and the display screen. Limited by the processing capabilities of the SOC and the image quality chip, the display effect of the Mini LED technology is not really released. Meanwhile, the processing capacity of the current SOC or image quality chip cannot meet the requirement, and the control number of the partitions cannot achieve over ten thousand partitions, so that the control of over 1 ten thousand partitions can be rarely realized by the conventional mass production Mini LED television or other equipment based on Mini LED backlight, and the improvement of products such as the Mini LED television is influenced. Therefore, the conventional technology has a problem that the image quality chip and the SOC have limited processing capabilities, and the number of divided sub-regions and the number of luminance information generated correspondingly cannot meet the current requirement of the Mini LED on the number of sub-regions and the number of luminance information generated correspondingly, which is not favorable for improving the display capability and image quality of the Mini LED television (or other devices based on the Mini LED backlight).
In order to solve the problems in the prior art, embodiments of the present invention provide a method for controlling a Mini LED backlight, where in an embodiment of the present invention, original luminance data is obtained, where the original luminance data includes a pieces of original luminance information; interpolating based on adjacent original brightness information in the original brightness data and acquiring target brightness data, wherein the adjacent original brightness information is used for controlling the display brightness of adjacent positions in a Mini LED backlight area, the target brightness data comprises B pieces of target brightness information, and B is greater than A; and controlling the brightness of the Mini LED backlight area based on the target brightness data. Compared with the scheme of controlling the display brightness of each sub-area directly based on the brightness information generated by the image quality chip or the main SOC in the prior art, the scheme of the invention performs interpolation based on the acquired original brightness data to acquire the target brightness data containing more target brightness information, and one target brightness information can be used for controlling the brightness of one sub-area. Therefore, based on the scheme of the invention, independent brightness control can be carried out on more sub-areas of the Mini LED backlight area, the requirement of the Mini LED on the number of the sub-areas and the number of the corresponding brightness information can be favorably met, and the display capability and the image quality can be favorably improved.
Exemplary method
As shown in fig. 1, an embodiment of the present invention provides a method for controlling a Mini LED backlight, specifically, the method includes the following steps:
step S100, obtaining original luminance data, where the original luminance data includes a pieces of original luminance information.
The Mini LED backlight control method in the embodiment of the present invention may be used to control a backlight area of a television using a Mini LED as a backlight, that is, the Mini LED backlight area is a backlight area of a Mini LED television. Specifically, the raw luminance data may be luminance data generated by an image quality chip or SOC of the Mini LED television. The original luminance data includes a pieces of original luminance information, where a is an integer greater than 1, and the original luminance information is information for controlling display luminance of a corresponding region. The brightness information is generated according to the specific brightness of the screen to be displayed, and specifically, the original brightness information controls the current of the corresponding LED lamp according to the data size, for example, in this embodiment, the original brightness information is 8bit data, data 0xFF corresponds to the maximum current, and 0x00 corresponds to the minimum current. In actual use, other bits of data may also be used as the original luminance information, and is not limited in this respect.
Step S200, interpolation is carried out based on adjacent original brightness information in the original brightness data, and target brightness data are obtained, wherein the adjacent original brightness information is used for controlling display brightness of adjacent positions in a Mini LED backlight area, the target brightness data comprise B pieces of target brightness information, and B is larger than A.
Wherein B is an integer greater than A. The adjacent original luminance information is information for controlling display luminance of an adjacent backlight position in the original luminance data. For example, when the original luminance data is transmitted in the form of a matrix composed of luminance information corresponding to respective positions of the backlight area, the adjacent original luminance information may be at least two elements adjacent to each other in the left-right direction or in the up-down direction in the matrix. Specifically, interpolation is performed on adjacent original luminance information in the original luminance data to obtain luminance information obtained through the interpolation as interpolated luminance information, and the interpolated luminance information and the original luminance information are collectively used as target luminance information to obtain target luminance data. In this way, more luminance information (interpolated luminance information) is obtained by interpolation, and display control can be performed for more areas. Optionally, interpolation may be performed by interpolation methods such as a spline interpolation method and a mean interpolation method, and other interpolation methods may also be used, which are not specifically limited herein. Optionally, more target brightness information may be obtained by means of multiple times of interpolation.
Step S300, performing brightness control on the Mini LED backlight area based on the target brightness data.
Specifically, the target brightness information in the target brightness data not only includes the original brightness information, but also includes the interpolated brightness information obtained by interpolation, so that the number of the target brightness information is larger than that of the original brightness information, and therefore, the condition that the Mini LED backlight area is divided into more sub-areas for brightness control can be met, and the improvement of the brightness control capability of the Mini LED backlight area is facilitated.
As can be seen from the above, the Mini LED backlight control method provided by the embodiment of the present invention obtains original luminance data, where the original luminance data includes a pieces of original luminance information; interpolating based on adjacent original brightness information in the original brightness data and acquiring target brightness data, wherein the adjacent original brightness information is used for controlling the display brightness of adjacent positions in a Mini LED backlight area, the target brightness data comprises B pieces of target brightness information, and B is greater than A; and controlling the brightness of the Mini LED backlight area based on the target brightness data. Compared with the scheme of controlling the display brightness of each sub-area directly based on the brightness information generated by the image quality chip or the main SOC in the prior art, the scheme of the invention performs interpolation based on the acquired original brightness data to acquire the target brightness data containing more target brightness information, and one target brightness information can be used for controlling the brightness of one sub-area. Therefore, based on the scheme of the invention, independent brightness control can be carried out on more sub-areas of the Mini LED backlight area, the requirement of the Mini LED backlight on the number of the sub-areas and the number of the corresponding brightness information can be favorably met, and the display capability and the image quality can be favorably improved.
Specifically, in this embodiment, as shown in fig. 2, the step S100 includes:
step S101, receiving brightness data to be processed sent by the system-on-chip.
And S102, verifying the brightness data to be processed to obtain a verification result.
Step S103, when the verification result indicates that the data is correct, acquiring original luminance data based on the luminance data to be processed.
And step S104, discarding the brightness data to be processed when the verification result is that the data is incorrect.
In this embodiment, the SOC of the Mini LED television generates the luminance data to be processed to control the luminance of the backlight area of the Mini LED television. Specifically, the SOC generates corresponding luminance data to be processed according to the luminance of each region in the screen to be displayed. Optionally, the MCU receives the luminance data to be processed and checks the luminance data. Alternatively, the verification may be performed based on the format, length, type or number of the preset luminance data to be processed. For example, in an application scenario, the luminance data to be processed includes a plurality of luminance information, each luminance information is 8-bit data, and when all the data in the luminance data to be processed satisfy the condition of 8 bits, the data is correct and is used as a verification result, otherwise, the data is incorrect and is used as the verification result. When the check result is that the data is correct, the brightness data to be processed can be considered to meet the requirements, no error occurs in the transmission process, and the brightness data to be processed can be used as the original brightness data to be subjected to subsequent processing. Otherwise, when the verification result is that the data is incorrect, discarding the brightness data to be processed. Further, after discarding the brightness data to be processed, returning to re-receive the brightness data to be processed sent by the SOC until correct data which can be used as original brightness data is obtained.
In this embodiment, the luminance data to be processed includes luminance data to be checked and check code data, and as shown in fig. 3, the step S102 specifically includes:
step S1021, calculating and obtaining a target verification code based on the received luminance data to be verified.
In step S1022, when the target check code is consistent with the received check code data, the check result is data correctness.
Step S1023, when the target check code is not consistent with the received check code data, the check result is data incorrect.
Specifically, the luminance data to be processed comprises luminance data to be checked consisting of a number of luminance information to be checked and check code data, wherein each piece of luminance information to be checked is 8-bit data, the SOC calculates and obtains the check code data according to the generated luminance data to be checked after generating the luminance data to be checked, and adds the check code data to the tail of the luminance data to be processed and sends the check code data together. And after receiving the brightness data to be processed, the MCU performs the same calculation according to the received brightness data to be processed to obtain a target check code, compares the target check code obtained by calculation with the received check code data, and if the target check code and the received check code data are consistent, the brightness data to be processed is not mistaken in the data transmission process, and the data is correct, otherwise, the data is incorrect. In this embodiment, the check code data is generated by means of xor check, that is, the xor calculation is performed on the luminance data to be checked at both the receiving end and the transmitting end to obtain the corresponding target check code and check code data. In the actual use process, the corresponding check code may also be calculated and obtained based on other check algorithms or principles, for example, the cyclic redundancy check code is calculated and obtained, and the like, which is not limited specifically herein.
In an application scenario, the head of the luminance data to be processed further includes a head check parameter, and the head check parameter may be a preset fixed parameter, and is used to position the luminance data to be processed. Specifically, the header verification parameter may be a fixed parameter of one byte (i.e., 8 bits), and may be set to 0xAA, for example, so that when the receiving end detects the fixed parameter, it is known that the following luminance information to be verified is included, and thus, the corresponding verification code may be obtained by fast calculation according to the luminance information to be verified, so as to implement fast verification. In the actual use process, the specific length and the specific parameter value of the head calibration parameter may also be set and adjusted according to actual requirements, which is not specifically limited herein.
Specifically, in this embodiment, mean value interpolation is performed based on the original luminance data to obtain target luminance data. Specifically, in order to reduce the calculation amount and the calculation difficulty, a mean value interpolation method is selected, and the mean value obtained by calculation is only used as the interpolation.
Specifically, in this embodiment, as shown in fig. 4, the step S200 includes:
step S201, dividing the Mini LED backlight area into a number of original sub-areas, where each original sub-area corresponds to one original brightness information.
Step S202, calculating an average value of original luminance information corresponding to adjacent original sub-regions as interpolated luminance information, and using a set of all the interpolated luminance information and all the original luminance information as target luminance data.
In this embodiment, the SOC divides the Mini LED backlight area into a number of original sub-areas, and generates corresponding original luminance information for each original sub-area. Therefore, when performing the mean interpolation, the Mini LED backlight area is divided into a number of original sub-areas according to the corresponding original luminance information, and then the mean interpolation is performed based on the original luminance information corresponding to the adjacent original sub-areas. Optionally, each of the source sub-regions corresponds to at least 2 LEDs of the Mini LED backlight region, and the number of the LEDs corresponding to each of the source sub-regions may be the same or different, which is not specifically limited herein.
Specifically, in this embodiment, the a original sub-regions include original sub-regions in Y rows and X columns, and step S2012 includes: respectively calculating the average value of original brightness information corresponding to two adjacent original subregions in each line and taking the average value as interpolated brightness information, taking each interpolated brightness information and each original brightness information as target brightness information, acquiring a set of B pieces of target brightness information and taking the set of B pieces of target brightness information as the target brightness data; wherein, A = X Y, B = X Y + (X-1) Y.
Specifically, in this embodiment, the Mini LED backlight area is divided into Y rows and X columns, where the number of horizontal divisions is denoted as X and the number of vertical divisions is denoted as Y, and thus, the Mini LED backlight area is divided into X × Y original sub-areas. And respectively calculating the average value of the original brightness information corresponding to the left and right adjacent original subregions in each line, and obtaining X-1 pieces of interpolation brightness information for each line. And (X-1) Y pieces of interpolated brightness information can be obtained by sharing Y lines, and X + Y (X-1) Y pieces of target brightness information can be obtained by combining the (X-1) Y pieces of interpolated brightness information with the X + Y pieces of original brightness information.
Further, in this embodiment, for each line, values Mji and Mki of original luminance information corresponding to any two adjacent original sub-regions are respectively obtained, and a value (Mji + Mki)/2 of interpolated luminance information corresponding to the two adjacent original sub-regions is calculated; taking all of the X × Y pieces of original luminance information and all of the (X-1) × Y pieces of interpolated luminance information as target luminance information, acquiring B pieces of target luminance information, and taking a set of all of the target luminance information as the target luminance data; wherein Mji is a value of original luminance information corresponding to an original sub-region in the ith row and the jth column, mki is a value of original luminance information corresponding to an original sub-region in the ith row and the kth column, and (Mji + Mki)/2 is a value of interpolated luminance information inserted between the jth column and the kth column in the ith row, k = j +1, Y ≧ i ≧ 1, (X-1) ≧ j ≧ 1.
In the above scheme of this embodiment, one piece of interpolated luminance information is inserted between every two adjacent original sub-regions, and in the actual use process, a plurality of pieces of interpolated luminance information may also be inserted between every two adjacent original sub-regions, and the specific value of the interpolated luminance information may also be adjusted according to the actual requirement. For example, when two pieces of interpolated luminance information need to be inserted between the j-th column and the k-th column of the i-th row, the values of the two pieces of interpolated luminance information obtained by calculation may be Mji + (Mki-Mji)/3 and Mji +2 × (Mki-Mji)/3, and the specific interpolation number and the interpolation calculation mode may be set and adjusted according to actual requirements, which is not specifically limited herein. In this way, even if the SOC has a limited capability and the number of original luminance information that can be generated by the SOC is limited, more target luminance information can be obtained by the above method, and the backlight area can be doubled.
Optionally, in this embodiment, interpolation is performed in the horizontal direction (i.e., each row), interpolation may also be performed in the vertical direction (i.e., each column) in actual use, or multiple times of interpolation (for example, interpolation is performed in the horizontal direction first, and then interpolation is performed in the vertical direction based on interpolated data and original data) is performed to obtain more target luminance information. For example, in an application scenario, interpolation may be performed based on the average of the original luminance information corresponding to two original sub-regions adjacent to each other up and down in each column, and for each column, Y-1 pieces of interpolated luminance information may be obtained. And a total of X columns, then (Y-1) × X pieces of interpolation brightness information can be obtained, and combined with X × Y pieces of original brightness information, then X × Y + (Y-1) × X pieces of target brightness information can be obtained. Alternatively, other interpolation methods may be used, and are not specifically limited herein.
Specifically, in this embodiment, as shown in fig. 5, the step S300 includes:
step S301, dividing the Mini LED backlight area into B target sub-areas based on the target brightness data.
Step S302, controlling the brightness of the B target sub-regions based on the B target brightness information, respectively.
Specifically, the Mini LED backlight area is divided into B target sub-areas based on the interpolation mode and the target luminance data obtained by interpolation. When mean value interpolation is performed based on the original brightness information corresponding to the two adjacent original sub-regions in each line in the interpolation process, the two adjacent original sub-regions are divided again based on each two adjacent original sub-regions, each line is divided into 2X-1 sub-regions, and Y lines are shared in total, so that (2X-1) Y target sub-regions can be obtained and correspond to B target brightness information one by one. Optionally, each target sub-region corresponds to at least 1 LED of the Mini LED backlight region, and the number of the LEDs corresponding to each target sub-region may be the same or different, which is not specifically limited herein.
Optionally, when mean interpolation is performed based on the original luminance information corresponding to the two adjacent original sub-regions in each column in the interpolation process, the two adjacent original sub-regions are re-divided, each column is divided into 2Y-1 sub-regions, and X rows are shared, so that (2Y-1) × X target sub-regions can be obtained, and the target luminance information is in one-to-one correspondence with the B target luminance information. There may also be a method of dividing the target sub-region based on other interpolation manners, which is not specifically limited herein.
Furthermore, after B target sub-areas are divided, the target brightness information corresponding to each target sub-area is respectively sent to the LED driving part corresponding to the Mini LED in each target sub-area, and the corresponding Mini LED is driven to work according to the current magnitude corresponding to the target brightness information, so that the brightness control of the Mini LED in each target sub-area is realized.
Optionally, the brightness of each Mini LED lamp may be controlled directly, that is, the brightness of each Mini LED lamp is controlled according to the corresponding target brightness data.
Optionally, the original sub-regions may be directly divided based on the picture to be displayed, corresponding interpolation fitting calculation is performed to obtain target brightness data, then the target sub-regions are divided based on the target brightness data on the picture to be displayed, and then the brightness of the LED lamps corresponding to each target sub-region in the Mini LED backlight region is controlled. The specific area division and interpolation method is similar to the above description, and is not repeated here.
In this embodiment, the Mini LED backlight control method is further described based on a specific application scenario. Fig. 6 is a schematic diagram of dividing a Mini LED backlight area according to an embodiment of the present invention, as shown in fig. 6, a picture quality chip or a main SOC generally divides an entire screen into X × Y original sub-areas (the number of divisions in the horizontal direction is X, and the number of divisions in the vertical direction is Y), and obtains luminance information of each original sub-area (denoted as M, and a value corresponding to each original sub-area is denoted as MXY). Fig. 7 is a schematic diagram of a Mini LED television backlight driving component module according to an embodiment of the present invention, and fig. 8 is a schematic diagram of a processing flow of an MCU in the prior art according to an embodiment of the present invention. As shown in fig. 7 and 8, the SOC of the Mini LED tv transmits the luminance information (i.e., MXY) of each region as luminance data, and in the prior art, the MCU only receives and distributes the luminance information, and after receiving the luminance data, the MCU directly transmits each luminance information to the corresponding LED driving chip to control the luminance of the corresponding Mini LED, so that the luminance of a number of original sub-regions can only be controlled, where a = X Y. Fig. 9 is a schematic diagram of interpolation division performed on a Mini LED backlight area according to an embodiment of the present invention, and fig. 10 is a schematic diagram of a processing flow of an MCU according to an embodiment of the present invention. As shown in fig. 9 and 10, in the embodiment of the present invention, after receiving the luminance data to be processed, the MCU checks whether the luminance data to be processed is correct, and if not, discards the luminance data, and if correct, can be used as the original luminance data to perform the next interpolation fitting calculation. Specifically, in this embodiment, mean value interpolation is performed based on the original luminance information corresponding to the two original sub-regions adjacent to each other on the left and right in each row, and luminance data of a greater data region is fitted. As shown in fig. 9, for M11 and M21, the average value thereof (M11 + M21)/2 is calculated as the insertion luminance information of the corresponding insertion region. Specifically, in this embodiment, the LED driving chip controls the current of the corresponding Mini LED according to the data size corresponding to the luminance information, for example, 0xFF corresponds to the maximum current, and 0x00 corresponds to the minimum current, so that a corresponding intermediate current can be obtained by performing the average calculation. Further, all the inserted luminance information and the original luminance information are used as target luminance information, and target luminance data is obtained. In this embodiment, the MCU performs specific interpolation fitting calculation to obtain target luminance data, and then the MCU distributes the target luminance data to the corresponding LED driving chips to control the luminance of the corresponding Mini LEDs. In this embodiment, in the interpolation mode shown in fig. 9, the original luminance information of the original X × Y sub-regions may be calculated to obtain X × Y + (X-1) × Y target luminance information, so that the number of controllable sub-regions may be increased. Correspondingly, the Mini LED backlight area is divided into B target sub-areas (B = X × Y + (X-1) × Y, and B > a) as shown in fig. 9 based on the above target luminance data, so that luminance control can be performed on more areas. Further, interpolation fitting calculation can be performed based on other manners, for example, interpolation is performed on each vertical column, or multiple times of interpolation is performed, so that more interpolation luminance information (or target luminance information) is obtained, and the problem that the existing SOC resolution capability cannot be matched with the Mini LED backlight one by one is solved. By means of the interpolation scheme, even if the SOC capacity is limited, the backlight area can be controlled in a double mode. For example, in the case where the conventional SOC (or image quality chip) can process only the luminance information of up to 8000 sub-areas, 16000 or more target luminance information can be obtained by interpolation, thereby realizing individual control of 16000 or more sub-areas. Therefore, when the processing capacity of the SOC or the picture quality chip does not meet the requirement and the sub-area of the processing is insufficient, the backlight can also realize multiple control, so that the display equipment (such as a Mini LED backlight television) based on the Mini LED backlight achieves better display effect.
Exemplary device
As shown in fig. 11, corresponding to the Mini LED backlight control method, an embodiment of the present invention further provides a Mini LED backlight control device, where the Mini LED backlight control device includes:
the data obtaining module 410 is configured to obtain original luminance data, where the original luminance data includes a pieces of original luminance information.
The Mini LED backlight control device in the embodiment of the present invention may be configured to control a backlight area of a television using a Mini LED as a backlight, that is, the Mini LED backlight area is a backlight area of a Mini LED television. Specifically, the raw luminance data may be luminance data generated by an image quality chip or SOC of the Mini LED television. The original luminance data includes a pieces of original luminance information, where a is an integer greater than 1, and the original luminance information is information for controlling display luminance of a corresponding region. The brightness information is generated according to the specific brightness of the screen to be displayed, and specifically, the original brightness information controls the current of the corresponding LED lamp according to the data size, for example, in this embodiment, the original brightness information is 8bit data, data 0xFF corresponds to the maximum current, and 0x00 corresponds to the minimum current. In the actual use process, data with other bits may also be used as the original luminance information, and is not limited specifically herein.
An interpolation module 420, configured to perform interpolation based on adjacent original luminance information in the original luminance data and obtain target luminance data, where the adjacent original luminance information is used to control display luminance at an adjacent position in a Mini LED backlight area, and the target luminance data includes B pieces of target luminance information, where B is greater than a.
Wherein B is an integer greater than A. The adjacent original luminance information is information for controlling display luminance of an adjacent backlight position in the original luminance data. For example, when the original luminance data is transmitted in the form of a matrix composed of luminance information corresponding to respective positions of the backlight area, the adjacent original luminance information may be at least two elements adjacent to each other in the left-right direction or in the up-down direction in the matrix. Specifically, interpolation is performed on adjacent original luminance information in the original luminance data to obtain luminance information obtained through the interpolation as interpolated luminance information, and the interpolated luminance information and the original luminance information are collectively used as target luminance information to obtain target luminance data. In this way, more luminance information (interpolated luminance information) is obtained by interpolation, and display control can be performed for more areas. Optionally, interpolation may be performed by interpolation methods such as a spline interpolation method and a mean interpolation method, and other interpolation methods may also be used, which are not specifically limited herein. Optionally, more target brightness information may be obtained by means of multiple times of interpolation.
And a control module 430, configured to perform brightness control on the Mini LED backlight area based on the target brightness data.
Specifically, the target brightness information in the target brightness data not only includes the original brightness information, but also includes the interpolated brightness information obtained by interpolation, so that the number of the target brightness information is larger than that of the original brightness information, and therefore, the condition that the Mini LED backlight area is divided into more sub-areas for brightness control can be met, and the improvement of the brightness control capability of the Mini LED backlight area is facilitated.
As can be seen from the above, the Mini LED backlight control device provided in the embodiment of the present invention obtains original luminance data through the data obtaining module 410, where the original luminance data includes a pieces of original luminance information; interpolating by an interpolation module 420 based on adjacent original brightness information in the original brightness data and obtaining target brightness data, where the adjacent original brightness information is used to control display brightness at an adjacent position in a Mini LED backlight area, the target brightness data includes B pieces of target brightness information, and B is greater than a; the brightness of the Mini LED backlight area is controlled by the control module 430 based on the target brightness data. Compared with the scheme of controlling the display brightness of each sub-area directly based on the brightness information generated by the image quality chip or the main SOC in the prior art, the scheme of the invention performs interpolation based on the acquired original brightness data to acquire the target brightness data containing more target brightness information, and one target brightness information can be used for controlling the brightness of one sub-area. Therefore, based on the scheme of the invention, independent brightness control can be carried out on more sub-areas of the Mini LED backlight area, the requirement of the Mini LED backlight on the number of the sub-areas and the number of the corresponding brightness information can be favorably met, and the display capability and the image quality can be favorably improved.
Specifically, in this embodiment, the data obtaining module 410 is configured to: receiving brightness data to be processed sent by a system level chip; checking the brightness data to be processed to obtain a checking result; when the verification result is that the data is correct, acquiring original brightness data based on the brightness data to be processed; and when the verification result is that the data is incorrect, discarding the brightness data to be processed.
In this embodiment, the SOC of the Mini LED television generates the luminance data to be processed to control the luminance of the backlight area of the Mini LED television. Specifically, the SOC generates corresponding luminance data to be processed according to the luminance of each region in the screen to be displayed. Optionally, the MCU receives the luminance data to be processed and checks the luminance data. Alternatively, the verification may be performed based on the format, length, type or number of the preset luminance data to be processed. For example, in an application scenario, the luminance data to be processed includes a plurality of luminance information, each luminance information is 8-bit data, and when all the data in the luminance data to be processed satisfy the condition of 8 bits, the data is correct and is used as a verification result, otherwise, the data is incorrect and is used as the verification result. When the check result is that the data is correct, the brightness data to be processed can be considered to meet the requirements, no error occurs in the transmission process, and the brightness data to be processed can be used as the original brightness data to be processed for subsequent processing. Otherwise, when the verification result is that the data is incorrect, discarding the brightness data to be processed. Further, after discarding the luminance data to be processed, returning to re-receiving the luminance data to be processed sent by the SOC until obtaining correct data which can be used as original luminance data.
In this embodiment, the data obtaining module 410 may be specifically configured to: calculating to obtain a target check code based on the received brightness data to be checked; when the target check code is consistent with the received check code data, the check result is data correct; and when the target check code is inconsistent with the received check code data, the check result is incorrect data.
Specifically, the luminance data to be processed comprises luminance data to be checked consisting of a number of luminance information to be checked and check code data, wherein each piece of luminance information to be checked is 8-bit data, the SOC calculates and obtains the check code data according to the generated luminance data to be checked after generating the luminance data to be checked, and adds the check code data to the tail of the luminance data to be processed and sends the check code data together. And after receiving the brightness data to be processed, the MCU performs the same calculation according to the received brightness data to be processed to obtain a target check code, compares the target check code obtained by calculation with the received check code data, and if the target check code and the received check code data are consistent, the brightness data to be processed is judged to have no error in the data transmission process, the data is correct, otherwise, the data is judged to be incorrect. In this embodiment, the check code data is generated by means of xor check, that is, the target check code and the check code data are obtained by performing xor calculation on the luminance data to be checked at both the receiving end and the transmitting end. In an actual use process, the corresponding check code may also be calculated and obtained based on other check algorithms or principles, for example, the cyclic redundancy check code is calculated and obtained, which is not limited specifically herein.
In an application scenario, the head of the luminance data to be processed further includes a head check parameter, and the head check parameter may be a preset fixed parameter, and is used to position the luminance data to be processed. Specifically, the header check parameter may be a fixed parameter of one byte (i.e., 8 bits), and may be set to 0xAA, for example, so that when the receiving end detects the fixed parameter, it is known that the following luminance information to be checked includes a number of luminance information to be checked, and thus, the corresponding check code may be obtained by fast calculation according to the a number of luminance information to be checked, thereby implementing fast check. In the actual use process, the specific length and the specific parameter value of the head calibration parameter may also be set and adjusted according to actual requirements, which is not specifically limited herein.
Specifically, in this embodiment, the interpolation module 420 is configured to: and performing mean value interpolation based on the original brightness data to obtain target brightness data. Specifically, in order to reduce the calculation amount and the calculation difficulty, a mean value interpolation method is selected, and only the mean value obtained through calculation is used as the interpolation.
Specifically, in this embodiment, the interpolation module 420 is configured to: dividing the Mini LED backlight area into A original sub-areas, wherein each original sub-area corresponds to one original brightness information; and calculating the mean value of the original brightness information corresponding to the adjacent original subregions to be used as interpolated brightness information, and using the set of all the interpolated brightness information and all the original brightness information as target brightness data.
In this embodiment, the Mini LED backlight area may be divided into a number of original sub-areas by the SOC, and corresponding original luminance information is generated for each original sub-area. Therefore, when performing mean interpolation, the Mini LED backlight area is divided into a number of original sub-areas according to the corresponding original luminance information, and then mean interpolation is performed based on the original luminance information corresponding to the adjacent original sub-areas. Optionally, each of the source sub-regions corresponds to at least 2 LEDs of the Mini LED backlight region, and the number of the LEDs corresponding to each of the source sub-regions may be the same or different, which is not specifically limited herein.
Specifically, in this embodiment, the a original sub-regions include original sub-regions in Y rows and X columns, and the interpolation module 420 is specifically configured to: respectively calculating the mean value of original brightness information corresponding to two adjacent original subregions in each line and taking the mean value as interpolated brightness information, taking each interpolated brightness information and each original brightness information as target brightness information, acquiring a set of B pieces of target brightness information and taking the set of B pieces of target brightness information as the target brightness data; wherein, A = X Y, B = X Y + (X-1) Y.
Specifically, in this embodiment, the Mini LED backlight area is divided into Y rows and X columns, where the number of divisions in the horizontal direction is denoted as X, and the number of divisions in the vertical direction is denoted as Y, so that the Mini LED backlight area is divided into X × Y primitive sub-areas. And respectively calculating the average value of the original brightness information corresponding to the left and right adjacent original subregions in each line, and obtaining X-1 pieces of interpolation brightness information for each line. And (X-1) Y pieces of interpolated brightness information can be obtained by sharing Y lines, and X + Y (X-1) Y pieces of target brightness information can be obtained by combining the (X-1) Y pieces of interpolated brightness information with the X + Y pieces of original brightness information.
Further, in this embodiment, the interpolation module 420 may be further specifically configured to: for each row, respectively acquiring the values Mji and Mki of the original brightness information corresponding to any two adjacent original sub-regions, and calculating the value (Mji + Mki)/2 of the interpolated brightness information corresponding to the two adjacent original sub-regions; taking all of the X × Y pieces of original luminance information and all of the (X-1) × Y pieces of interpolated luminance information as target luminance information, acquiring B pieces of target luminance information, and taking a set of all of the target luminance information as the target luminance data; wherein Mji is a value of original luminance information corresponding to an original sub-region in the ith row and the jth column, mki is a value of original luminance information corresponding to an original sub-region in the ith row and the kth column, and (Mji + Mki)/2 is a value of interpolated luminance information inserted between the jth column and the kth column in the ith row, k = j +1, Y ≧ i ≧ 1, (X-1) ≧ j ≧ 1.
In the above scheme of this embodiment, one piece of interpolated luminance information is inserted between every two adjacent original sub-regions, and in the actual use process, a plurality of pieces of interpolated luminance information may also be inserted between every two adjacent original sub-regions, and the specific value of the interpolated luminance information may also be adjusted according to the actual requirement. For example, when two pieces of interpolated luminance information need to be inserted between the j-th column and the k-th column of the i-th row, the values of the two pieces of interpolated luminance information obtained by calculation may be Mji + (Mki-Mji)/3 and Mji +2 × (Mki-Mji)/3, and the specific interpolation number and the interpolation calculation mode may be set and adjusted according to actual requirements, which is not specifically limited herein. In this way, even if the SOC has a limited capability and the number of original luminance information that can be generated by the SOC is limited, more target luminance information can be obtained by the above method, and the backlight area can be doubled.
Optionally, in this embodiment, interpolation is performed in the horizontal direction (i.e., each row), interpolation may also be performed in the vertical direction (i.e., each column) in actual use, or multiple times of interpolation (for example, interpolation is performed in the horizontal direction first, and then interpolation is performed in the vertical direction based on interpolated data and original data) is performed to obtain more target luminance information. For example, in an application scenario, interpolation may be performed based on the average of the original luminance information corresponding to two original sub-regions adjacent to each other up and down in each column, and for each column, Y-1 pieces of interpolated luminance information may be obtained. And (Y-1) X pieces of interpolated brightness information can be obtained in total X columns, and X + Y (Y-1) X pieces of target brightness information can be obtained by combining the (Y-1) X pieces of interpolated brightness information with X Y pieces of original brightness information. Alternatively, other interpolation methods may be used, and are not specifically limited herein.
Specifically, in this embodiment, the control module 430 is configured to: dividing the Mini LED backlight area into B target sub-areas based on the target brightness data; and respectively controlling the brightness of the B target sub-areas based on the B target brightness information.
Specifically, the Mini LED backlight area is divided into B target sub-areas based on the interpolation method and the target luminance data obtained by interpolation. When mean value interpolation is performed based on the original brightness information corresponding to the two adjacent original sub-regions in each line in the interpolation process, the two adjacent original sub-regions are divided again based on each two adjacent original sub-regions, each line is divided into 2X-1 sub-regions, and Y lines are shared in total, so that (2X-1) Y target sub-regions can be obtained and correspond to B target brightness information one by one. Optionally, each target sub-region corresponds to at least 1 LED of the Mini LED backlight region, and the number of LEDs corresponding to each target sub-region may be the same or different, which is not specifically limited herein.
Optionally, when mean interpolation is performed based on the original luminance information corresponding to the two adjacent original sub-regions in each column in the interpolation process, the two adjacent original sub-regions are re-divided, each column is divided into 2Y-1 sub-regions, and X rows are shared, so that (2Y-1) × X target sub-regions can be obtained, and the target luminance information is in one-to-one correspondence with the B target luminance information. There may also be a method of dividing the target sub-region based on other interpolation manners, which is not specifically limited herein.
Furthermore, after B target sub-areas are divided, the target brightness information corresponding to each target sub-area is respectively sent to the LED driving part corresponding to the Mini LED in each target sub-area, and the corresponding Mini LED is driven to work according to the current magnitude corresponding to the target brightness information, so that the brightness control of the Mini LED in each target sub-area is realized.
Optionally, the brightness of each Mini LED lamp may be controlled independently, that is, the brightness of each Mini LED lamp is controlled according to the corresponding target brightness data.
Optionally, the original sub-regions may be directly divided based on the picture to be displayed, corresponding interpolation fitting calculation is performed to obtain target brightness data, then the target sub-regions are divided based on the picture to be displayed, and further, the brightness of the LED lamps corresponding to the target sub-regions in the Mini LED backlight region is controlled. The specific area division and interpolation method is similar to the above description, and is not repeated here.
Based on the above embodiment, the present invention further provides an intelligent terminal, and a schematic block diagram thereof may be as shown in fig. 12. The intelligent terminal comprises a processor, a memory, a network interface and a display screen which are connected through a system bus. Wherein, the processor of the intelligent terminal is used for providing calculation and control capability. The memory of the intelligent terminal comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a Mini LED backlight control program. The internal memory provides an environment for the operation of the operating system and the Mini LED backlight control program in the non-volatile storage medium. The network interface of the intelligent terminal is used for being connected and communicated with an external terminal through a network. The Mini LED backlight control program, when executed by a processor, implements the steps of any of the Mini LED backlight control methods described above. The display screen of the intelligent terminal can be a liquid crystal display screen or an electronic ink display screen.
It will be understood by those skilled in the art that the block diagram of fig. 12 is only a block diagram of a part of the structure related to the solution of the present invention, and does not constitute a limitation to the intelligent terminal to which the solution of the present invention is applied, and a specific intelligent terminal may include more or less components than those shown in the figure, or combine some components, or have different arrangements of components.
In one embodiment, an intelligent terminal is provided, where the intelligent terminal includes a memory, a processor, and a Mini LED backlight control program stored in the memory and executable on the processor, and when executed by the processor, the Mini LED backlight control program performs the following operations:
acquiring original brightness data, wherein the original brightness data comprises A pieces of original brightness information;
interpolating based on adjacent original brightness information in the original brightness data and acquiring target brightness data, wherein the adjacent original brightness information is used for controlling the display brightness of adjacent positions in a Mini LED backlight area, the target brightness data comprises B pieces of target brightness information, and B is greater than A;
and controlling the brightness of the Mini LED backlight area based on the target brightness data.
The embodiment of the invention also provides a computer readable storage medium, a Mini LED backlight control program is stored on the computer readable storage medium, and when the Mini LED backlight control program is executed by a processor, the steps of any one of the Mini LED backlight control methods provided by the embodiments of the invention are realized.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned functions may be distributed as different functional units and modules according to needs, that is, the internal structure of the apparatus may be divided into different functional units or modules to implement all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention. For the specific working processes of the units and modules in the system, reference may be made to the corresponding processes in the foregoing method embodiments, which are not described herein again.
In the above embodiments, the description of each embodiment has its own emphasis, and reference may be made to the related description of other embodiments for parts that are not described or recited in any embodiment.
Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the technical solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other ways. For example, the above-described embodiments of the apparatus/terminal device are merely illustrative, and for example, the division of the above modules or units is only one type of logical function division, and the actual implementation may be implemented by another division manner, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed.
The integrated modules/units described above, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow in the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments described above may be implemented. The computer program includes computer program code, and the computer program code may be in a source code form, an object code form, an executable file or some intermediate form. The computer readable medium may include: any entity or device capable of carrying the above-mentioned computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, read-Only Memory (ROM), random Access Memory (RAM), electrical carrier wave signal, telecommunication signal, software distribution medium, etc. It should be noted that the contents of the computer-readable storage medium can be increased or decreased as required by the legislation and patent practice in the jurisdiction.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art; the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein.

Claims (9)

1. A Mini LED backlight control method is characterized by comprising the following steps:
acquiring original brightness data, wherein the original brightness data comprises A pieces of original brightness information;
interpolating based on adjacent original brightness information in the original brightness data and acquiring target brightness data, wherein the adjacent original brightness information is used for controlling the display brightness of adjacent positions in a Mini LED backlight area, the target brightness data comprises B pieces of target brightness information, and B is greater than A;
performing brightness control on the Mini LED backlight area based on the target brightness data;
wherein, the interpolating and obtaining the target brightness data based on the adjacent original brightness information in the original brightness data includes:
dividing the Mini LED backlight area into A original sub-areas, wherein each original sub-area corresponds to one original brightness information;
and calculating the mean value of the original brightness information corresponding to the adjacent original sub-regions and taking the mean value as interpolated brightness information, and taking the set of all the interpolated brightness information and all the original brightness information as target brightness data.
2. The Mini LED backlight control method of claim 1, wherein the obtaining raw brightness data comprises:
receiving brightness data to be processed sent by a system level chip;
verifying the brightness data to be processed to obtain a verification result;
when the verification result is that the data is correct, acquiring original brightness data based on the brightness data to be processed;
and when the verification result is that the data is incorrect, discarding the brightness data to be processed.
3. The Mini LED backlight control method of claim 2, wherein the luminance data to be processed comprises luminance data to be checked and check code data, and the checking the luminance data to be processed to obtain the check result comprises:
calculating and obtaining a target check code based on the received brightness data to be checked;
when the target check code is consistent with the received check code data, the check result is data correct;
and when the target check code is inconsistent with the received check code data, the check result is incorrect data.
4. The Mini LED backlight control method of claim 1, wherein the A original sub-regions comprise Y rows and X columns of original sub-regions, the calculating the mean value of the original luminance information corresponding to the adjacent original sub-regions and using the mean value as the interpolated luminance information, and using the set of all the interpolated luminance information and all the original luminance information as the target luminance data comprises:
respectively calculating the mean value of original brightness information corresponding to two adjacent original subregions in each row and using the mean value as interpolated brightness information, using each interpolated brightness information and each original brightness information as target brightness information, acquiring a set of B pieces of target brightness information and using the set as target brightness data;
wherein, A = X Y, B = X Y + (X-1) Y.
5. The Mini LED backlight control method of claim 4, wherein the calculating of the mean value of the original luminance information corresponding to two adjacent original sub-regions in each row as the interpolated luminance information, the taking of each interpolated luminance information and each original luminance information as the target luminance information, and the obtaining of the set of B pieces of target luminance information as the target luminance data, respectively comprises:
for each row, respectively acquiring the values Mji and Mki of original brightness information corresponding to any two adjacent original sub-regions, and calculating the value (Mji + Mki)/2 of interpolated brightness information corresponding to the two adjacent original sub-regions;
all the X X Y original brightness information and all the (X-1) Y interpolation brightness information are used as target brightness information, B target brightness information is obtained, and a set of all the target brightness information is used as the target brightness data;
wherein Mji is the value of the original brightness information corresponding to the original sub-region of the ith row and the jth column, mki is the value of the original brightness information corresponding to the original sub-region of the ith row and the jth column, and (Mji + Mki)/2 is the value of the interpolated brightness information inserted between the jth column and the kth column of the ith row, k = j +1, Y ≧ i ≧ 1, (X-1) ≧ j ≧ 1.
6. The Mini LED backlight control method of claim 1, wherein the controlling the brightness of the Mini LED backlight area based on the target brightness data comprises:
dividing the Mini LED backlight area into B target sub-areas based on the target brightness data;
and respectively controlling the brightness of the B target sub-areas based on the B target brightness information.
7. A Mini LED backlight control device, characterized in that the device comprises:
the data acquisition module is used for acquiring original brightness data, wherein the original brightness data comprises A pieces of original brightness information;
the interpolation module is used for carrying out interpolation based on adjacent original brightness information in the original brightness data and obtaining target brightness data, wherein the adjacent original brightness information is used for controlling the display brightness of adjacent positions in a Mini LED backlight area, the target brightness data comprises B pieces of target brightness information, and B is larger than A;
the control module is used for carrying out brightness control on the Mini LED backlight area based on the target brightness data;
wherein, the interpolating and obtaining the target brightness data based on the adjacent original brightness information in the original brightness data includes:
dividing the Mini LED backlight area into A original sub-areas, wherein each original sub-area corresponds to one original brightness information;
and calculating the mean value of the original brightness information corresponding to the adjacent original sub-regions and taking the mean value as interpolated brightness information, and taking the set of all the interpolated brightness information and all the original brightness information as target brightness data.
8. An intelligent terminal, characterized in that the intelligent terminal comprises a memory, a processor and a Mini LED backlight control program stored on the memory and operable on the processor, wherein the Mini LED backlight control program when executed by the processor realizes the steps of the Mini LED backlight control method according to any one of claims 1 to 6.
9. A computer-readable storage medium, wherein a Mini LED backlight control program is stored thereon, and when executed by a processor, the Mini LED backlight control program performs the steps of the Mini LED backlight control method of any one of claims 1 to 6.
CN202110969298.7A 2021-08-23 2021-08-23 Mini LED backlight control method, device and related equipment Active CN113707101B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110969298.7A CN113707101B (en) 2021-08-23 2021-08-23 Mini LED backlight control method, device and related equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110969298.7A CN113707101B (en) 2021-08-23 2021-08-23 Mini LED backlight control method, device and related equipment

Publications (2)

Publication Number Publication Date
CN113707101A CN113707101A (en) 2021-11-26
CN113707101B true CN113707101B (en) 2022-11-04

Family

ID=78654095

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110969298.7A Active CN113707101B (en) 2021-08-23 2021-08-23 Mini LED backlight control method, device and related equipment

Country Status (1)

Country Link
CN (1) CN113707101B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114420053B (en) * 2021-12-01 2023-05-16 康佳集团股份有限公司 Backlight partition brightness control method and device, terminal equipment and storage medium

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105047145A (en) * 2015-09-14 2015-11-11 青岛海信电器股份有限公司 Backlight brightness control method, backlight brightness control device and display terminal

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011013458A (en) * 2009-07-02 2011-01-20 Panasonic Corp Liquid crystal display device
JP2011017910A (en) * 2009-07-09 2011-01-27 Panasonic Corp Liquid crystal display device
US9305495B2 (en) * 2011-02-23 2016-04-05 Panasonic Intellectual Property Management Co., Ltd. Display device and display method for estimating backlight luminance distribution
KR101992888B1 (en) * 2012-07-25 2019-06-25 엘지디스플레이 주식회사 Device for interpolating data and method for interpolating data
CN103514853B (en) * 2013-09-23 2015-10-28 西安交通大学 A kind of backlight smoothing method and device being applied to liquid crystal display dynamic light adjustment
JP6786235B2 (en) * 2015-08-26 2020-11-18 キヤノン株式会社 Image display device
CN107068072A (en) * 2017-06-01 2017-08-18 青岛海信电器股份有限公司 Backlight brightness control devices, image display device
CN110211540A (en) * 2019-05-30 2019-09-06 深圳创维－Rgb电子有限公司 A kind of multi-region method for controlling backlight thereof, device, terminal and storage medium
KR20210020387A (en) * 2019-08-14 2021-02-24 삼성전자주식회사 Electronic apparatus and control method thereof
CN111965907A (en) * 2020-08-26 2020-11-20 京东方科技集团股份有限公司 Display device and driving method thereof
CN113223465A (en) * 2021-04-16 2021-08-06 深圳创维－Rgb电子有限公司 Regional backlight demonstration method, device and storage medium

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105047145A (en) * 2015-09-14 2015-11-11 青岛海信电器股份有限公司 Backlight brightness control method, backlight brightness control device and display terminal

Also Published As

Publication number Publication date
CN113707101A (en) 2021-11-26

Similar Documents

Publication Publication Date Title
CN1093669C (en) A histogram equalization apparatus for contrast enhancement of moving image and method therefor
CN101847372B (en) Method and system for determining intensity arrangement of light source
CN109801586B (en) Display controller, display control method and system and display device
CN1910901A (en) Smart clipper for mobile displays
US20180350308A1 (en) Backlight luminance control device, backlight luminance control method and image display device
CN110149467B (en) Mobile telephone
CN113707101B (en) Mini LED backlight control method, device and related equipment
US9386190B2 (en) Method and device for compression of an image signal and corresponding decompression method and device
CN109309826B (en) Image color balancing method and device, terminal equipment and readable storage medium
CN101510962A (en) Method and apparatus for correcting lens shadow
CN1386256A (en) Method of and unit for displaying an image in sub-fields
CN115985238A (en) Data processing method, circuit and driving chip
US20240127733A1 (en) Method, apparatus, and device for driving display screen to display
CN113571023B (en) Backlight multi-partition brightness statistical method and device based on FPGA
CN1917035A (en) Method and apparatus of correcting color coordinate and display device including apparatus of correcting color coordinate
CN212724664U (en) Drive IC control device, display device, and electronic apparatus
CN115359751A (en) Gamma debugging method and device and computer readable storage medium
CN113870768B (en) Display compensation method and device
EP2026277B1 (en) Optimized data transmission system and method
CN111554243B (en) Brightness adjusting method and display device
CN110704006B (en) Multi-screen picture display method and device, terminal equipment and storage medium
CN109559671A (en) Display panel and its control method, control device and display equipment
US20230171373A1 (en) Multi-data transmission channel fusion apparatus and electronic device
CN111801724A (en) Video processing device, display device, video processing method, program, and recording medium
US20220138919A1 (en) Image processing device and image processing method

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