CN110136654B - Dimming backlight partition dimming control method, intelligent terminal and storage medium - Google Patents
Dimming backlight partition dimming control method, intelligent terminal and storage medium Download PDFInfo
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- CN110136654B CN110136654B CN201910267167.7A CN201910267167A CN110136654B CN 110136654 B CN110136654 B CN 110136654B CN 201910267167 A CN201910267167 A CN 201910267167A CN 110136654 B CN110136654 B CN 110136654B
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
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Abstract
The invention provides a partitioned dimming control method for dimming backlight, an intelligent terminal and a storage medium, wherein the partitioned dimming control method for dimming backlight is used for regulating and controlling the brightness of a backlight source of the intelligent terminal in a partitioned mode and comprises the steps that image partition information and brightness information corresponding to the image partition information are obtained by an intelligent terminal main board SOC, and the image partition information and the brightness information are sent to an FPGA; the FPGA receives and analyzes image partition information and brightness information, generates partition control signals according to the image partition information and the brightness information, and simultaneously sends the partition control signals to the driving chip; and the driving chip receives the partition control signal and drives and controls the partition brightness of the image according to the partition control signal. Display frames and brightness information are obtained through the intelligent terminal mainboard SOC, and the driving chips corresponding to the dimming backlight partitions are controlled in a unified mode through the FPGA, so that the dimming efficiency and the dimming effect of the dimming backlight partitions are improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a dimming backlight partition dimming control method, an intelligent terminal and a storage medium.
Background
With the development of science and technology, electronic products (such as intelligent terminals) are increasingly applied to the lives of people; while some intelligent terminals (such as displays and televisions) with image display functions pursue image display effects (such as brightness and color) more and more; in some schemes, in order to achieve a display effect of a high-quality image picture, a batch of intelligent terminals having a dimming function are created, that is, area adjustment of a display picture is achieved, and area control is performed on image brightness or color in different areas.
However, most of the existing driving schemes for the partition control of the dimming backlight are in a point-to-point driving manner, and when the number of partitions is increased, the number of corresponding channels and the number of driving chips are increased, so that the dimming efficiency and the dimming effect are deteriorated.
Therefore, the prior art has defects and needs to be improved and developed.
Disclosure of Invention
The present invention provides a dimming control method for a dimming backlight partition, an intelligent terminal and a storage medium, aiming at solving the problem of poor dimming efficiency and dimming effect of the dimming backlight partition in multiple partitions in the prior art.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a dimming backlight partition dimming control method is used for partition regulation and control of the brightness of a backlight source of an intelligent terminal and particularly comprises the following steps:
the method comprises the steps that image partition information and brightness information corresponding to the image partition information are obtained by an intelligent terminal main board SOC, and the image partition information and the brightness information are sent to an FPGA;
the FPGA receives and analyzes the image partition information and the brightness information, generates a partition control signal according to the image partition information and the brightness information, and simultaneously sends the partition control signal to a driving chip;
and the driving chip receives the partition control signal and controls the partition brightness of the image according to the partition control signal.
Further, the intelligent terminal mainboard SOC acquires image partition information and brightness information corresponding to the image partition information, and sends the image partition information and the brightness information to the FPGA, and the method further includes the steps of:
the intelligent terminal mainboard SOC obtains a display picture and divides the display picture into a row matrix and a column matrix;
and storing the row and column matrix as image partition information corresponding to the image partition.
Further, the intelligent terminal motherboard SOC obtains a display screen, and divides the display screen into a matrix of rows and columns, specifically including:
the intelligent terminal mainboard SOC obtains a display picture, and the backlight LED lamps are divided into (X, Y) matrixes according to the display picture, wherein X is row number information which is a positive integer, and Y is column number information which is a positive integer; the LED lamps in the same row number information are connected in a common anode mode, the LED lamps in Z rows in different row number information and same column number information are connected in a common cathode mode, Z is a positive integer, and Z is larger than or equal to 1 and smaller than or equal to 0.5X.
Further, the intelligent terminal mainboard SOC acquires image partition information and brightness information corresponding to the image partition information, and sends the image partition information and the brightness information to the FPGA, specifically including:
the intelligent terminal main board SOC reads image partition information and acquires brightness information corresponding to the image partition information;
and the intelligent terminal mainboard SOC sends the acquired image partition information and the acquired brightness information to the FPGA through the SPI information.
Further, the FPGA receives and analyzes the image partition information and the luminance information, and generates a partition control signal to the driver chip according to the image partition information and the luminance information, and the method specifically includes:
the FPGA receives the SPI information, and analyzes the SPI information into image partition information and partition brightness information corresponding to the image partition information;
the FPGA generates a partition control signal according to the partition brightness information and sends the partition control signal to a driving chip, wherein the partition control signal comprises a partition brightness signal and a partition brightness periodic signal.
Further, the driving chip receives the partition control signal and controls the brightness of the image partition according to the control signal, which specifically includes:
the driving chip receives the partition control signal and controls the conduction of the anode of the LED lamp with the row number information X =1 according to the partition control signal;
when the anode of the LED lamp with the row number information X =1 is conducted with a 1/Z partition brightness periodic signal, the driving chip controls the anode of the LED lamp with the row number information X =2 to be conducted;
by analogy, when anodes of the LEDs with the row number information X = N-1 conduct 1/Z divisional luminance periodic signals, the driving chip controls the anodes of the LED lamps with the row number information X = N to conduct, where N is a positive integer and N > 1.
The invention adopts another technical scheme for solving the technical problem as follows:
a smart terminal comprising a processor, and a memory coupled to the processor, the memory storing a dimmed backlight zone dimming control program that when executed by the processor performs the steps of:
the method comprises the steps that image partition information and brightness information corresponding to the image partition information are obtained by an intelligent terminal main board SOC, and the image partition information and the brightness information are sent to an FPGA;
the FPGA receives and analyzes the image partition information and the brightness information, generates a partition control signal according to the image partition information and the brightness information, and simultaneously sends the partition control signal to a driving chip;
the driving chip receives the partition control signal and controls the partition brightness of the image according to the partition control signal;
the processor is configured to invoke the dimming backlight zone dimming control program instruction.
Further, when the dimming backlight partition dimming control program is executed by the processor, the following steps are also implemented:
the intelligent terminal mainboard SOC obtains a display picture and divides the display picture into a row matrix and a column matrix;
storing the row and column matrix as image partition information corresponding to the image partition;
the intelligent terminal mainboard SOC obtains a display picture, and the backlight LED lamps are divided into (X, Y) matrixes according to the display picture, wherein X is row number information which is a positive integer, and Y is column number information which is a positive integer; the LED lamps in the same row number information are connected in a common anode mode, the LED lamps in Z rows in different row number information and same column number information are connected in a common cathode mode, Z is a positive integer, and Z is larger than or equal to 1 and smaller than or equal to 0.5X.
Further, when the dimming backlight partition dimming control program is executed by the processor, the following steps are also implemented:
the intelligent terminal main board SOC reads image partition information and acquires brightness information corresponding to the image partition information;
the intelligent terminal mainboard SOC sends the acquired image partition information and the acquired brightness information to the FPGA through the SPI information;
the FPGA receives the SPI information, and analyzes the SPI information into image partition information and partition brightness information corresponding to the image partition information;
the FPGA generates a partition control signal according to the partition brightness information and sends the partition control signal to a driving chip, wherein the partition control signal comprises a partition brightness signal and a partition brightness periodic signal;
the driving chip receives the partition control signal and controls the conduction of the anode of the LED lamp with the row number information X =1 according to the partition control signal;
when the anode of the LED lamp with the row number information X =1 is conducted with a 1/Z partition brightness periodic signal, the driving chip controls the anode of the LED lamp with the row number information X =2 to be conducted;
by analogy, when anodes of the LEDs with the row number information X = N-1 conduct 1/Z divisional luminance periodic signals, the driving chip controls the anodes of the LED lamps with the row number information X = N to conduct, where N is a positive integer and N > 1.
The invention adopts another technical scheme for solving the technical problem as follows:
a storage medium, wherein the storage medium stores a computer program executable for implementing the dimming backlight zone dimming control method as claimed in any one of the above.
The invention provides a partitioned dimming control method for dimming backlight, an intelligent terminal and a storage medium, wherein the partitioned dimming control method for dimming backlight is used for regulating and controlling the brightness of a backlight source of the intelligent terminal in a partitioned mode and comprises the steps of obtaining image partition information and brightness information corresponding to the image partition information by an intelligent terminal main board SOC, and sending the image partition information and the brightness information to an FPGA; the FPGA receives and analyzes the image partition information and the brightness information, generates a partition control signal according to the image partition information and the brightness information, and simultaneously sends the partition control signal to a driving chip; and the driving chip receives the partition control signal and controls the partition brightness of the image according to the partition control signal. According to the invention, the display picture and the brightness information are obtained through the SOC of the intelligent terminal mainboard, and the driving chips corresponding to the dimming backlight partitions are uniformly controlled by the FPGA, so that the dimming efficiency of the dimming backlight of the intelligent terminal is effectively improved, the dimming effect is improved, and the debugging cost and the material cost of the dimming backlight intelligent terminal are effectively reduced.
Drawings
Fig. 1 is a flowchart of a sectional dimming control method for dimming backlight according to a preferred embodiment of the present invention.
Fig. 2 is a schematic diagram of the connection relationship of the LED lamp circuit in the dimming backlight of the present invention.
Fig. 3 is a timing diagram of driving the LED lamp in the dimming backlight of the present invention.
Fig. 4 is a functional block diagram of the intelligent terminal in the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a flowchart of a method for controlling partitioned dimming of a dimming backlight according to the present invention. As shown in fig. 1, a dimming backlight zone dimming control method according to an embodiment of the present invention includes the following steps:
s12, the intelligent terminal mainboard SOC obtains image partition information and brightness information corresponding to the image partition information, and sends the image partition information and the brightness information to the FPGA.
The invention aims at the design and development of an intelligent terminal with a multi-partition dimming backlight display function, and the intelligent terminal with the multi-partition dimming backlight display function is provided with a main board SOC (main board main chip) and an FPGA (field programmable gate array). Specifically, the intelligent terminal main board SOC is configured to control dimming of backlight of each partition of the intelligent terminal; further, the intelligent terminal main board SOC and the FPGA are in signal communication through the SPI (serial peripheral interface); namely, the intelligent terminal main board SOC communicates with the FPGA through an SPI signal; after receiving and analyzing the SIP signal, the FPGA generates a partition control signal according to the analyzed SPI signal and sends the partition control signal to a driving chip, and the driving chip controls the backlight brightness of each partition according to the partition control signal.
Further, the step S121 specifically includes:
step S121, reading image partition information by the intelligent terminal mainboard SOC, and acquiring brightness information corresponding to the image partition information;
and S122, sending the acquired image partition information and the acquired brightness information to the FPGA through the SPI information by the intelligent terminal mainboard SOC.
The intelligent terminal equipment reads image partition information through the main board SOC, acquires brightness information corresponding to the image partition information, completes identification and storage of the image partition information at the main board SOC stage, and performs corresponding mapping on the image partition information and the brightness information; and the mapped image partition information and the mapped brightness information are sent to the FPGA in an SPI information mode through the SPI. And then promoted the efficiency of adjusting luminance that intelligent terminal adjusted luminance was shaded, promoted the effect of adjusting luminance, effectively reduced the intelligent terminal's that adjusts luminance in a poor light debugging cost and material cost.
Preferably, the step S12 is preceded by a step S11, and the step S11 includes:
s111, the intelligent terminal main board SOC obtains a display picture, and the display picture is divided into a row matrix and a column matrix;
and step S112, storing the row and column matrix as image partition information corresponding to the image partition.
It can be understood that when the intelligent terminal main board SOC obtains the image partition, a display picture is obtained in advance, the display picture is divided into a row matrix and a column matrix, and then information corresponding to the row matrix and the column matrix is stored as image partition information corresponding to the image partition; therefore, the informationization of a display picture is realized, the information transmission between the intelligent terminal mainboard SOC and the FPGA is facilitated, and the dimming efficiency of the intelligent terminal dimming backlight is improved.
Further, step S111 specifically includes:
the intelligent terminal mainboard SOC obtains a display picture, and the backlight LED lamps are divided into (X, Y) matrixes according to the display picture, wherein X is row number information which is a positive integer, and Y is column number information which is a positive integer; the LED lamps in the same row number information are connected in a common anode mode, the LED lamps in Z rows in different row number information and same column number information are connected in a common cathode mode, Z is a positive integer, and Z is larger than or equal to 1 and smaller than or equal to 0.5X.
The dimming backlight includes a plurality of LED lamps, and the divisional dimming in the present application refers to divisional dimming of the display screen, that is, dimming of a plurality of image divisions, that is, divisional driving of the LED lamps of the dimming backlight to control the brightness, thereby implementing divisional dimming.
It can be understood that the main board SOC of the intelligent terminal divides the LED lamps of the dimming backlight according to the display image obtained by the LED lamps, and further divides the LED lamps into (X, Y) matrices, where X, Y and Z are only a code, which is mainly used to better explain the present invention, but not to limit the present invention; it is emphasized that the LED lamps in the (X, Y) matrix of the dimming backlight partition LED lamps can share the cathode with the LED lamps in different columns and rows, and Z can be any positive integer less than 0.5, such as 1, 2, etc. Meanwhile, when the dimming is controlled in a same-driving dimming backlight partition mode, the number of the common-cathode LED lamps in the same column and different rows is preferably the same Z value, and therefore the dimming efficiency of the dimming backlight partition mode is greatly improved.
Further, step S13 is further included after step S12, and step S13 specifically includes:
step S131, the FPGA receives the SPI information and analyzes the SPI information into image partition information and partition brightness information corresponding to the image partition information;
step S131, the FPGA generates a partition control signal according to the partition brightness information and sends the partition control signal to a driving chip, wherein the partition control signal comprises a partition brightness signal and a partition brightness periodic signal.
It is understood that the SPI information includes image partition information, and luminance information corresponding to the image partition information; the intelligent terminal mainboard SOC can be understood to map the image partition information and the brightness information correspondingly and send the mapped image partition information and the mapped brightness information to the FPGA in the form of SPI information; and then reduced FPGA's information processing volume, and then promoted the subregion efficiency of adjusting luminance in a poor light.
Meanwhile, the FPGA generates partition control signals corresponding to each dimming backlight partition according to the SPI information, and the partition control signals comprise partition brightness signals and partition brightness periodic signals, namely, the mainboard SOC realizes driving control of each partition driving chip through the FPGA. It should be noted that the partition brightness signal is the brightness of each partition LED lamp, and the partition brightness period signal is the dwell time of a single frame of a corresponding display frame; furthermore, the time corresponding to the partition brightness periodic signal corresponds to the staying time of a single frame of the picture; furthermore, the time corresponding to the divisional brightness period signal corresponds to half of the dwell time of a single frame of the picture.
Preferably, the step S13 is followed by a step S14, and the step S14 specifically includes:
step S141, the driving chip receives the partition control signal and controls the conduction of the LED lamp anode with the row number information X =1 according to the partition control signal;
step S142, when the anode of the LED lamp with the row number information X =1 conducts a 1/Z divisional luminance periodic signal, the driving chip controls the anode of the LED lamp with the row number information X =2 to conduct;
step S143, by analogy, when anodes of the LEDs with the row number information X = N-1 conduct 1/Z divisional luminance periodic signals, the driving chip controls anodes of the LED lamps with the row number information X = N to conduct, where N is a positive integer and N > 1.
It can be understood that when the anodes of the dimming backlight LED lamps in row 1 are turned on, all the LED lamps in row 1 start to operate, and the dimming backlight LED lamps corresponding to row 1 display different brightness according to their respective brightness information; when the 1/Z cycle of the line 1 is conducted, the anode of the line 2 is conducted, all the LED lamps of the line 2 start to work, and the dimming backlight LED lamps corresponding to the line 2 display different brightness according to the brightness information of the dimming backlight LED lamps; in the same way, the dimming backlight subarea LED lamps are scanned and displayed until the anodes of all the LED lamps are conducted to subarea brightness period information; at this time, the dwell time corresponding to one frame of the image, i.e. the frequency of the divisional scanning of the dimming backlight, corresponds to the frame frequency of the display image.
Referring to fig. 3 and 4, in an embodiment, the number Z of rows of the LED lamps having the same cathode in the same row and different rows in the dimming backlight partition is 4, and each 4 LED lamps having the same row and different rows in the dimming backlight partition have the same cathode; the number of the zones in the dimming light-distinguishing zone is 2000, wherein each LED lamp is a zone; it should be noted that the SOC model of the intelligent terminal support board in this embodiment is a hua hai si V811 chip, and the driving chip is preferably an iwatt7038 chip; when dimming control is performed by the dimming backlight partition control method, the intelligent terminal main board SOC obtains a display picture, and partitions the dimming backlight into (40, 50) matrixes, namely, the intelligent terminal main board SOC is partitioned into 40 rows, 50 columns of LED lamps are arranged in each row, and the intelligent terminal main board SOC stores the (40, 50) matrixes as image partition information corresponding to the image partitions.
When the intelligent terminal is controlled, the intelligent terminal mainboard SOC sends image partition information and brightness information from the FPGA as SPI information; after the SPI information is acquired by the FPGA, the SPI information is analyzed, a partition control signal is generated according to the analyzed SPI information, and the partition control signal is sent to a driving chip.
After receiving the partition control signal, the driving chip controls the conduction of the anodes of the dimming backlight LED lamps in the 1 st row, all the LED lamps in the 1 st row start working, and the dimming backlight LED lamps corresponding to the 1 st row display different brightness according to respective brightness information; when the line 1 is conducted for 1/4 periods, the anodes of the line 2 are conducted, all the LED lamps of the line 2 start to work, and the dimming backlight LED lamps corresponding to the line 2 display different brightness according to the brightness information of the dimming backlight LED lamps; in the same way, the dimming backlight subarea LED lamps are scanned and displayed until the anodes of all the LED lamps are conducted to subarea brightness period information; at this time, the dwell time corresponding to one frame of the image, i.e. the frequency of the divisional scanning of the dimming backlight, corresponds to the frame frequency of the display image.
As shown in fig. 4, an embodiment of the present invention further provides an intelligent terminal. The intelligent terminal comprises a processor 10 and a memory 20 connected with the processor 10, wherein the memory 20 stores a dimming backlight zone dimming control program, and the dimming backlight zone dimming control program realizes the following steps when executed by the processor 10:
the method comprises the steps that image partition information and brightness information corresponding to the image partition information are obtained by an intelligent terminal main board SOC, and the image partition information and the brightness information are sent to an FPGA;
the FPGA receives and analyzes the image partition information and the brightness information, generates a partition control signal according to the image partition information and the brightness information, and simultaneously sends the partition control signal to a driving chip;
the driving chip receives the partition control signal and controls the partition brightness of the image according to the partition control signal;
the processor is used for calling the dimming backlight partition dimming control program instruction;
the processor 10 is configured to invoke the dimming backlight partitioning dimming control program instruction; as described above.
When the dimming backlight partition dimming control program is executed by the processor 10, the following steps are also implemented:
the intelligent terminal mainboard SOC obtains a display picture and divides the display picture into a row matrix and a column matrix;
storing the row and column matrix as image partition information corresponding to the image partition;
the intelligent terminal mainboard SOC obtains a display picture, and the backlight LED lamps are divided into (X, Y) matrixes according to the display picture, wherein X is row number information which is a positive integer, and Y is column number information which is a positive integer; the LED lamps in the same row number information are connected in a common anode mode, the LED lamps in Z rows in different row number information and same column number information are connected in a common cathode mode, Z is a positive integer and is more than or equal to 1 and less than or equal to 0.5X; as described above.
When the dimming backlight partition dimming control program is executed by the processor 10, the following steps are also implemented:
the intelligent terminal main board SOC reads image partition information and acquires brightness information corresponding to the image partition information;
the intelligent terminal mainboard SOC sends the acquired image partition information and the acquired brightness information to the FPGA through the SPI information;
the FPGA receives the SPI information, and analyzes the SPI information into image partition information and partition brightness information corresponding to the image partition information;
the FPGA generates a partition control signal according to the partition brightness information and sends the partition control signal to a driving chip, wherein the partition control signal comprises a partition brightness signal and a partition brightness periodic signal;
the driving chip receives the partition control signal and controls the conduction of the anode of the LED lamp with the row number information X =1 according to the partition control signal;
when the anode of the LED lamp with the row number information X =1 is conducted with a 1/Z partition brightness periodic signal, the driving chip controls the anode of the LED lamp with the row number information X =2 to be conducted;
by analogy, when anodes such as LEDs with the row number information X = N-1 conduct 1/Z partition brightness periodic signals, the driving chip controls anodes of LED lamps with the row number information X = N to conduct, wherein N is a positive integer and is greater than 1; as described above.
Embodiments of the present invention further provide a storage medium, where the storage medium stores a computer program, where the computer program can be executed to implement the dimming backlight partition dimming control method as described above; as described above.
In summary, the dimming backlight partition dimming control method, the intelligent terminal and the storage medium provided by the present invention are used for partition regulation and control of the backlight brightness of the intelligent terminal, and the dimming backlight partition dimming control method includes acquiring image partition information and brightness information corresponding to the image partition information by an intelligent terminal motherboard SOC, and sending the image partition information and the brightness information to an FPGA; the FPGA receives and analyzes the image partition information and the brightness information, generates a partition control signal according to the image partition information and the brightness information, and simultaneously sends the partition control signal to a driving chip; and the driving chip receives the partition control signal and controls the partition brightness of the image according to the partition control signal. According to the invention, the display picture and the brightness information are obtained through the SOC of the intelligent terminal mainboard, and the driving chips corresponding to the dimming backlight partitions are uniformly controlled by the FPGA, so that the dimming efficiency of the dimming backlight of the intelligent terminal is effectively improved, the dimming effect is improved, and the debugging cost and the material cost of the dimming backlight intelligent terminal are effectively reduced.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (7)
1. A dimming backlight partition dimming control method is used for partition regulation and control of the brightness of a backlight source of an intelligent terminal and is characterized by comprising the following steps:
the method comprises the steps that image partition information and brightness information corresponding to the image partition information are obtained by an intelligent terminal main board SOC, and the image partition information and the brightness information are sent to an FPGA;
the FPGA receives and analyzes the image partition information and the brightness information, generates a partition control signal according to the image partition information and the brightness information, and simultaneously sends the partition control signal to a driving chip;
the driving chip receives the partition control signal and controls the partition brightness of the image according to the partition control signal; the intelligent terminal mainboard SOC obtains image partition information and brightness information corresponding to the image partition information, and sends the image partition information and the brightness information to the FPGA, and the intelligent terminal mainboard SOC also comprises the following steps:
the intelligent terminal mainboard SOC obtains a display picture and divides the display picture into a row matrix and a column matrix;
storing the row and column matrix as image partition information corresponding to the image partition;
the intelligent terminal mainboard SOC obtains a display frame, divides the display frame into a row matrix and a column matrix, and specifically comprises:
the intelligent terminal mainboard SOC obtains a display picture, and the backlight LED lamps are divided into (X, Y) matrixes according to the display picture, wherein X is row number information which is a positive integer, and Y is column number information which is a positive integer; the LED lamps in the same row number information are connected in a common anode mode, the LED lamps in Z rows in different row number information and same column number information are connected in a common cathode mode, Z is a positive integer and is more than or equal to 1 and less than or equal to 0.5X;
LED lamps in a (X, Y) matrix of dimming backlight partition LED lamps share cathodes with LED lamps in the same column and different rows; when the same driving dimming backlight is used for controlling dimming in a partition mode, the number of the common cathode LED lamps in the same column and different rows is the same Z value.
2. The method according to claim 1, wherein the intelligent terminal motherboard SOC obtains image partition information and luminance information corresponding to the image partition information, and sends the image partition information and the luminance information to the FPGA, and specifically comprises:
the intelligent terminal main board SOC reads image partition information and acquires brightness information corresponding to the image partition information;
and the intelligent terminal mainboard SOC sends the acquired image partition information and the acquired brightness information to the FPGA through the SPI information.
3. The method according to claim 2, wherein the FPGA receives and analyzes the image partition information and the luminance information, and generates the partition control signal to the driving chip according to the image partition information and the luminance information, and specifically comprises:
the FPGA receives the SPI information, and analyzes the SPI information into image partition information and partition brightness information corresponding to the image partition information;
the FPGA generates a partition control signal according to the partition brightness information and sends the partition control signal to a driving chip, wherein the partition control signal comprises a partition brightness signal and a partition brightness periodic signal.
4. The method according to claim 3, wherein the driving chip receives the partition control signal and controls the brightness of the control partition according to the control signal, specifically comprising:
the driving chip receives the partition control signal and controls the conduction of the anode of the LED lamp with the row number information X being 1 according to the partition control signal;
when the anode of the LED lamp with the row number information X being 1 is conducted with a 1/Z partition brightness periodic signal, the driving chip controls the anode of the LED lamp with the row number information X being 2 to be conducted;
by analogy, when the anode of the LED lamp with the row number information X ═ N-1 conducts the 1/Z divisional brightness period signal, the driving chip controls the anode of the LED lamp with the row number information X ═ N to conduct, where N is a positive integer, and N > 1.
5. An intelligent terminal, comprising a processor, and a memory connected to the processor, wherein the memory stores a dimming backlight zone dimming control program, and the dimming backlight zone dimming control program, when executed by the processor, implements the steps of:
the method comprises the steps that image partition information and brightness information corresponding to the image partition information are obtained by an intelligent terminal main board SOC, and the image partition information and the brightness information are sent to an FPGA;
the FPGA receives and analyzes the image partition information and the brightness information, generates a partition control signal according to the image partition information and the brightness information, and simultaneously sends the partition control signal to a driving chip;
the driving chip receives the partition control signal and controls the partition brightness of the image according to the partition control signal;
the processor is used for calling the dimming backlight partition dimming control program;
the intelligent terminal mainboard SOC obtains a display picture and divides the display picture into a row matrix and a column matrix;
storing the row and column matrix as image partition information corresponding to the image partition;
the intelligent terminal mainboard SOC obtains a display picture, and the backlight LED lamps are divided into (X, Y) matrixes according to the display picture, wherein X is row number information which is a positive integer, and Y is column number information which is a positive integer; the LED lamps in the same row number information are connected in a common anode mode, the LED lamps in Z rows in different row number information and same column number information are connected in a common cathode mode, Z is a positive integer and is more than or equal to 1 and less than or equal to 0.5X;
LED lamps in a (X, Y) matrix of dimming backlight partition LED lamps share cathodes with LED lamps in the same column and different rows; when the same driving dimming backlight is used for controlling dimming in a partition mode, the number of the common cathode LED lamps in the same column and different rows is the same Z value.
6. The intelligent terminal of claim 5, wherein the dimming backlight zone dimming control program, when executed by the processor, further implements the steps of:
the intelligent terminal main board SOC reads image partition information and acquires brightness information corresponding to the image partition information;
the intelligent terminal mainboard SOC sends the acquired image partition information and the acquired brightness information to the FPGA through the SPI information;
the FPGA receives the SPI information, and analyzes the SPI information into image partition information and partition brightness information corresponding to the image partition information;
the FPGA generates a partition control signal according to the partition brightness information and sends the partition control signal to a driving chip, wherein the partition control signal comprises a partition brightness signal and a partition brightness periodic signal;
the driving chip receives the partition control signal and controls the conduction of the anode of the LED lamp with the row number information X being 1 according to the partition control signal;
when the anode of the LED lamp with the row number information X being 1 is conducted with a 1/Z partition brightness periodic signal, the driving chip controls the anode of the LED lamp with the row number information X being 2 to be conducted;
by analogy, when the anode of the LED lamp with the row number information X ═ N-1 conducts the 1/Z divisional brightness period signal, the driving chip controls the anode of the LED lamp with the row number information X ═ N to conduct, where N is a positive integer, and N > 1.
7. A storage medium, characterized in that the storage medium stores a computer program executable for implementing the dimming backlight zone dimming control method according to any one of claims 1-4.
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| CN112530377A (en) * | 2020-12-08 | 2021-03-19 | 康佳集团股份有限公司 | Backlight display control chip and display device |
| CN112540779B (en) * | 2020-12-08 | 2024-10-11 | 深圳创维－Rgb电子有限公司 | Local dimming method for display device, display device and storage medium |
| CN112863419B (en) * | 2021-01-27 | 2022-12-23 | 重庆惠科金渝光电科技有限公司 | Display device driving method, display device, and computer-readable storage medium |
| CN113053329B (en) * | 2021-03-26 | 2022-10-14 | 深圳前海骁客影像科技设计有限公司 | Backlight control system |
| CN115225838B (en) * | 2021-04-19 | 2025-01-24 | 西安青松光电技术有限公司 | FPGA-based control device, method and display equipment |
| CN114267304B (en) * | 2021-12-30 | 2023-01-20 | 合肥瑞识智能科技有限公司 | Mini-LED backlight module and driving method thereof |
| CN114827510B (en) * | 2022-04-25 | 2025-04-08 | 深圳创维－Rgb电子有限公司 | Method, device, equipment and computer storage medium for picture matrix backlight |
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| US9208730B2 (en) * | 2011-05-13 | 2015-12-08 | Samsung Display Co., Ltd. | Optimization of light source drive values in backlight systems |
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