CN112562602A - Backlight control data processing method, display device and storage medium - Google Patents
Backlight control data processing method, display device and storage medium Download PDFInfo
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- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
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- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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Abstract
The invention discloses a data processing method for backlight control, display equipment and a storage medium, wherein the method comprises the following steps: generating a first backlight data signal according to a current image sent by a second chip, and receiving a second backlight data signal generated and sent by the second chip according to the current image, wherein the processing digits of the first chip and the second chip are different; and respectively converting the second backlight data signal and the first backlight data signal into corresponding backlight levels, and selecting one of the two backlight levels as a backlight control signal. The invention can select proper backlight control signals from the backlight data signals generated by the two chips, and avoids the phenomenon that black blocks are displayed in a backlight area due to insufficient processing bits of the chips and inaccurate sent backlight control signals.
Description
Technical Field
The present invention relates to the field of backlight control, and in particular, to a data processing method for backlight control, a display device, and a storage medium.
Background
In the existing display device, an SOC chip and an FRC chip are usually arranged, the SOC chip can linearly output backlight data of a current frame image to the FRC chip through an SPI protocol, and the FRC chip sends a corresponding backlight control signal to a backlight driving module after receiving the backlight data. At present, the processing bit number of the FRC chip is generally 6 bits, that is, the data range of the backlight control signal sent to the backlight driving module is 0 to 63, and the backlight driving module can generally adjust the backlight stage number to be 4096 stages, corresponding to the backlight stage number to be 0 to 4095, wherein when the backlight stage number is 0, the backlight output is 0, and the display is a black screen.
The range of the backlight control signal output by the 6-bit FRC chip is 0-63, the range of the backlight stage number corresponding to the backlight driving module is 0-4095, and the backlight stage number corresponding to each bit in the backlight control signal is 64. Namely, when the range of the backlight stage number is 0-63, the backlight control signal output by the corresponding FRC chip is 0; when the range of the backlight stage number is 64-127, the backlight control signal output by the corresponding FRC chip is 1; by analogy, when the range of the backlight stage number is 4032-4095, the backlight control signal output by the corresponding FRC chip is 64.
After the SOC chip determines that the backlight level is 0-63 according to the current frame image and outputs the backlight level to the FRC chip, the control signals generated after the processing of the FRC chip are all 0. When the number of backlight stages to be displayed in the frame image is 1-63, the backlight output of the backlight driving module is 0, that is, the backlight brightness control signal received by the backlight driving module is inaccurate due to insufficient processing digits of the FRC chip.
Disclosure of Invention
The invention mainly aims to provide a data processing method for backlight control, a display device and a storage medium, and aims to solve the problem that a backlight control signal is inaccurate due to insufficient processing digits of a backlight control chip.
In order to achieve the above object, the present invention provides a data processing method for backlight control, applied to a first chip, the method comprising the steps of:
generating a first backlight data signal according to a current image sent by a second chip, and receiving a second backlight data signal generated and sent by the second chip according to the current image, wherein the processing digits of the first chip and the second chip are different;
and respectively converting the second backlight data signal and the first backlight data signal into corresponding backlight levels, and selecting one of the two backlight levels as a backlight control signal.
Optionally, the number of processing bits of the first chip is smaller than the number of processing bits of the second chip; the step of converting the second backlight data signal and the first backlight data signal into corresponding backlight levels respectively, and selecting one of the two backlight levels as a backlight control signal includes:
converting the first backlight data signal into a first backlight progression and converting the second backlight data signal into a second backlight progression;
and comparing the second backlight progression with a preset black block threshold progression, and selecting the second backlight progression or the first backlight progression as the backlight control signal based on the comparison result.
Optionally, the step of selecting the second backlight level or the first backlight level as the backlight control signal based on the comparison result comprises:
if the comparison result shows that the second backlight progression is greater than or equal to the black block threshold progression, the backlight control signal is the first backlight progression;
and if the comparison result shows that the second backlight progression is smaller than the black block threshold progression, the backlight control signal is the second backlight progression.
Optionally, the number of processing bits of the second chip is 10 bits, and the number of processing bits of the first chip is 6 bits.
Optionally, the step of converting the second backlight data signal into a second backlight progression comprises:
converting the second backlight data signal with the data range of 0-1023 into a second backlight stage number with the data range of 0-4095;
the step of converting the first backlight data signal into a first backlight progression comprises:
and converting the first backlight data signal with the data range of 0-63 into a first backlight stage with the data range of 0-4095.
Optionally, the black block threshold number of levels is greater than or equal to 64.
Optionally, after the step of selecting one of the two backlight levels as the backlight control signal, the method further includes:
and sending the backlight control signal to a backlight driving module so that the backlight driving module adjusts backlight according to the backlight control signal.
Optionally, the step of receiving a second backlight data signal generated and sent by the second chip according to the current image includes:
receiving a second backlight data signal generated and sent by a second chip according to the frame rate of the current image;
the step of sending the backlight control signal to a backlight driving module includes:
and acquiring the actual frame rate of the backlight driving module, modulating the backlight control signal according to the actual frame rate, and then sending the modulated backlight control signal to the backlight driving module.
Further, to achieve the above object, the present invention also provides a display device including a memory, a processor, and a backlight-controlled data processing program stored on the memory and executable on the processor, wherein: the data processing program of the backlight control, when executed by the processor, implements the steps of the data processing method of the backlight control as described above.
Further, to achieve the above object, the present invention also provides a computer readable storage medium having stored thereon a data processing program for backlight control, which when executed by a processor, implements the steps of the data processing method for backlight control as described above.
According to the data processing method, the display device and the storage medium for backlight control provided by the embodiment of the invention, the current frame image can be processed through the Local dimming modules in the first chip and the second chip so as to respectively obtain the first backlight data signal and the second backlight data signal. When the first chip acquires the first backlight data signal and the second backlight data signal, the first chip can respectively convert the first backlight data signal and the second backlight data signal into corresponding backlight levels, and one of the two backlight levels is selected as a backlight control signal. Due to the fact that the processing digits of the two chips are different, when the backlight progression corresponding to one chip is 0 order, the backlight progression corresponding to the other chip is selected, so that the corresponding frame image can be provided with backlight when being displayed on the display device, and the frame image is prevented from being displayed as a black block in a backlight area due to the fact that the backlight is not output due to insufficient processing digits of the chips and inaccuracy of the sent backlight control signal.
Drawings
FIG. 1 is a schematic diagram of an apparatus in a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating a data processing method for backlight control according to a first embodiment of the present invention;
FIG. 3 is a flowchart illustrating a data processing method for backlight control according to a second embodiment of the present invention;
FIG. 4 is a flowchart illustrating a data processing method for backlight control according to a third embodiment of the present invention;
FIG. 5 is a flowchart illustrating a fifth embodiment of a data processing method for backlight control according to the present invention;
fig. 6 is a flowchart illustrating a data processing method for backlight control according to a sixth embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, fig. 1 is a schematic device structure diagram of a hardware operating environment according to an embodiment of the present invention.
The terminal of the embodiment of the invention is a display device, and the display device can be a PC, a smart phone, a tablet personal computer, an electronic book reader, an MP3(Moving Picture Experts Group Audio Layer III, motion Picture Experts compression standard Audio Layer 3) player, an MP4(Moving Picture Experts Group Audio Layer IV, motion Picture Experts compression standard Audio Layer 4) player, a portable computer and other intelligent devices with display functions.
As shown in fig. 1, the display apparatus may include: a processor 1001, such as a CPU, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
Optionally, the display device may further include a camera, a Radio Frequency (RF) circuit, a sensor, an audio circuit, a WiFi module, and the like. Such as light sensors, motion sensors, and other sensors. Specifically, the light sensor may include an ambient light sensor that adjusts the brightness of the display screen based on the ambient light level and a proximity sensor that turns off the display screen and/or backlight when the hardware device is moved to the ear. As one of the motion sensors, the gravity acceleration sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when the motion sensor is stationary, and can be used for applications (such as horizontal and vertical screen switching, related games, magnetometer attitude calibration) for recognizing the attitude of hardware equipment, and related functions (such as pedometer and tapping) for vibration recognition; of course, the hardware device may also be configured with other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, and so on, which are not described herein again.
Those skilled in the art will appreciate that the display device configuration shown in fig. 1 does not constitute a limitation of the display device and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a kind of computer storage medium, may include therein an operating system, a network communication module, a user interface module, and a data processing program for backlight control.
In the display device shown in fig. 1, the network interface 1004 is mainly used for connecting to a backend server and performing data communication with the backend server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; and the processor 1001 may be configured to call a data processing program for backlight control stored in the memory 1005, and perform the following operations:
generating a first backlight data signal according to a current image sent by a second chip, and receiving a second backlight data signal generated and sent by the second chip according to the current image, wherein the processing digits of the first chip and the second chip are different;
and respectively converting the second backlight data signal and the first backlight data signal into corresponding backlight levels, and selecting one of the two backlight levels as a backlight control signal.
Further, the processor 1001 may call a data processing program of backlight control stored in the memory 1005, and also perform the following operations:
converting the first backlight data signal into a first backlight progression and converting the second backlight data signal into a second backlight progression;
and comparing the second backlight progression with a preset black block threshold progression, and selecting the second backlight progression or the first backlight progression as the backlight control signal based on the comparison result.
Further, the processor 1001 may call a data processing program of backlight control stored in the memory 1005, and also perform the following operations:
if the comparison result shows that the second backlight progression is greater than or equal to the black block threshold progression, the backlight control signal is the first backlight progression;
and if the comparison result shows that the second backlight progression is smaller than the black block threshold progression, the backlight control signal is the second backlight progression.
Further, the processor 1001 may call a data processing program of backlight control stored in the memory 1005, and also perform the following operations:
and sending the backlight control signal to a backlight driving module so that the backlight driving module adjusts backlight according to the backlight control signal.
Further, the processor 1001 may call a data processing program of backlight control stored in the memory 1005, and also perform the following operations:
receiving a second backlight data signal generated and sent by a second chip according to the frame rate of the current image;
and acquiring the actual frame rate of the backlight driving module, modulating the backlight control signal according to the actual frame rate, and then sending the modulated backlight control signal to the backlight driving module.
The specific embodiment of the present invention applied to the display device is substantially the same as the following embodiments of the data processing method applied to the backlight control, and will not be described herein again.
Referring to fig. 2, fig. 2 is a flowchart illustrating a data processing method for backlight control according to a first embodiment of the present invention, wherein the data processing method for backlight control includes the following steps:
step S10, generating a first backlight data signal according to a current image sent by a second chip, and receiving a second backlight data signal generated and sent by the second chip according to the current image, wherein the processing digits of the first chip and the second chip are different;
in this embodiment, the display device includes a first chip, a second chip, and a backlight driving module. The first chip is connected with the second chip, and the second chip is connected with the backlight driving module. The first chip and the second chip are provided with hardware modules capable of realizing the Local dimming regional backlight adjustment function, and the backlight driving module can adjust the backlight output size. The first Chip is an FRC (Frame Rate Conversion) Chip of the display device, and the second Chip is an SoC (System on Chip) of the display device. The SoC chip and the FRC chip, and the FRC chip and the backlight driving module may communicate with each other through a Serial Peripheral Interface (SPI).
When the display device operates normally, the first chip may generate a first backlight data signal corresponding to the current frame image according to the current frame image, and send the current frame image and the first backlight data signal to the second chip. The second chip can also generate a second backlight data signal corresponding to the current frame image according to the current frame image, and receive the first backlight data signal output by the first chip in real time.
Since the chip processing bits of the first chip and the second chip are different, the accuracy of the first backlight data signal generated by the first chip and the accuracy of the second backlight data signal generated by the second chip are different for the same frame of image. For example, when the backlight driving module can adjust the size of 4096-step backlight, if the processing bit number of the chip is 6bit, the accuracy of the backlight data signal output by the chip is 4096/2664; if the processing bit number of the chip is 10 bits, the precision of the backlight data signal output by the chip is 4096/210＝4。
Step S20, converting the second backlight data signal and the first backlight data signal into corresponding backlight levels, and selecting one of the two backlight levels as a backlight control signal.
After the first chip generates the first backlight data signal and receives the second backlight data signal, the first backlight data signal and the second backlight data signal can be respectively converted into corresponding backlight levels, and because the first backlight data signal and the second backlight data signal have different precisions, after the first backlight data signal and the second backlight data signal are respectively converted into two backlight levels, the backlight level corresponding to the chip with higher processing digit is more accurate than the backlight level corresponding to the chip with lower processing digit.
When the two backlight levels are not 0, both the two backlight levels can be used as backlight control signals, and the difference is that the backlight level of the chip with higher processing digit controls the backlight size generated by the backlight driving module to be more accurate. When the two backlight levels are both 0, the backlight control signal can also be used, at this time, no matter which backlight level is selected, the backlight size output by the backlight driving module is 0, and the backlight area on the display device is displayed as a black block.
Since the accuracy of the two backlight levels is not the same, there will be a case where one of the backlight levels is 0 and the other is not 0. And the chip corresponding to the backlight level 0 is the chip with lower processing digit. For example, when the number of backlight stages corresponding to an image of a current frame is 63 stages, for a chip with a processing bit number of 6 bits, since the 63 stages are lower than the minimum precision 64, the backlight data signal output by the chip is 0, and the corresponding backlight stage is 0 stages, and the backlight area is displayed as a black block in the frame image because the backlight output is 0. For the chip with 10bit processing number, since the minimum precision is 4, the backlight data signal output by the chip is 15, and the signal is converted into the corresponding backlight stage number of 60 steps, which is closer to the backlight stage number of 63 steps corresponding to the frame image.
The first chip may select one of the first backlight data signal and the second backlight data signal as the backlight control signal according to a numerical value of two backlight levels after converting the first backlight data signal and the second backlight data signal into corresponding backlight levels, respectively. When one of the two backlight levels has a value of 0, the other backlight level is selected as the backlight control signal to prevent the backlight from being erroneously output as zero and displayed as a black block in the backlight area when the current frame image should display the backlight.
In this embodiment, a current frame image can be processed by Local dimming modules in the first chip and the second chip to obtain a first backlight data signal and a second backlight data signal, respectively. When the first chip acquires the first backlight data signal and the second backlight data signal, the first chip can respectively convert the first backlight data signal and the second backlight data signal into corresponding backlight levels, and one of the two backlight levels is selected as a backlight control signal. Due to the fact that the processing digits of the two chips are different, when the backlight progression corresponding to one chip is 0 order, the backlight progression corresponding to the other chip is selected, so that the corresponding frame image can be provided with backlight when being displayed on the display device, and the frame image is prevented from being displayed as a black block in a backlight area due to the fact that the backlight is not output due to insufficient processing digits of the chips and inaccuracy of the sent backlight control signal.
Further, referring to fig. 3, fig. 3 is a schematic flowchart of a data processing method for backlight control according to a second embodiment of the present invention, based on the embodiment shown in fig. 2, the processing bit number of the first chip is smaller than the processing bit number of the second chip; in the step S20, the step of converting the second backlight data signal and the first backlight data signal into corresponding backlight levels respectively, and the step of selecting one of the two backlight levels as the backlight control signal includes:
step S21, converting the first backlight data signal into a first backlight level, and converting the second backlight data signal into a second backlight level;
step S22, comparing the second backlight progression with a preset black block threshold progression, and selecting the second backlight progression or the first backlight progression as the backlight control signal based on the comparison result.
In this embodiment, the number of processing bits of the first chip is smaller than that of the second chip. The first chip may convert the first backlight data signal into a first backlight progression and convert the second backlight data signal into a second backlight progression. The processing digit of the first chip is low, and the accuracy of the first backlight grade obtained after the first backlight data signal is converted is also low.
The second chip is internally preset with black block threshold level numbers. When the backlight level corresponding to one frame image is higher than or equal to the black block threshold level, the first backlight data signal generated by the first chip is greater than zero. That is, the black block threshold level is higher than the precision value of the first backlight data signal. And when the backlight level corresponding to one frame image is lower than the black block threshold level, the first backlight data signal generated by the first chip is zero. That is, at this time, although the backlight level corresponding to the frame image is not zero, the generated first backlight data signal is converted into the first backlight level and becomes 0 level due to the insufficient number of bits processed by the first chip.
After comparing the second backlight progression with the preset black block threshold progression, the first chip may determine whether the first backlight data signal is zero according to a comparison result between the second backlight progression and the preset black block threshold progression, where a zero first backlight data signal indicates that the corresponding first backlight progression is unavailable, and the second backlight progression should be used as the backlight control signal.
Further, referring to fig. 4, fig. 4 is a flowchart illustrating a data processing method for backlight control according to a third embodiment of the present invention, based on the embodiment shown in fig. 3, the step S22 of comparing the second backlight level with a preset black block threshold level, and selecting the second backlight level or the first backlight level as the backlight control signal based on the comparison result includes:
step S221, comparing the second backlight progression with a preset black block threshold progression;
step S222, if the comparison result indicates that the second backlight level is greater than or equal to the black block threshold level, the backlight control signal is the first backlight level;
in step S223, if the comparison result indicates that the second backlight progression is smaller than the black block threshold progression, the backlight control signal is the second backlight progression.
In this embodiment, the first chip may compare the second backlight level with a preset black block threshold level. If the second backlight level is greater than or equal to the black block threshold level, it indicates that the first backlight data signal is not zero, and the first backlight level is available, and at this time, the first chip may use the first backlight level as the backlight control signal. If the second backlight progression is smaller than the black block threshold progression, it indicates that the first backlight data signal and the first backlight progression are both zero, and the first backlight progression is unavailable, and the first chip needs to use the second backlight progression as the backlight control signal.
In the fourth embodiment, the number of processing bits of the first chip is set to 6 bits, and the number of processing bits of the second chip is set to 10 bits. The data range of the first backlight data signal generated by the first chip is 0-63, and the precision is 64. The data range of the second backlight data signal generated by the second chip is 0-1023, and the precision is 4. The product of the value of the first backlight data signal and the corresponding precision value is the first backlight stage number; the product of the value of the second backlight data signal and the corresponding precision value is the second backlight stage number. And the data range of the first backlight stage and the second backlight stage is 0-4095.
It can be understood that the data range of the backlight data signals generated by the first chip and the second chip does not reach 0-4095. In fact, when the first backlight data signal is at the maximum value 63, the maximum value of the first backlight stage is 63 × 64 — 4032. Similarly, when the second backlight data signal has a maximum value of 1023, the maximum value of the second backlight level is 1023 × 4 — 4092. Namely, the range of the first backlight progression is 0-4032, and the precision is 64; the range of the second backlight level is 0-4092, and the precision is 4.
When the first chip generates the first backlight data signal according to a certain frame image, if the actual backlight level number corresponding to the frame image is in the range of 0-63 orders, the accuracy unit of the first chip is 64 due to insufficient processing digits, so that for the frame image with the actual backlight level number of 0-63 orders, the generated first backlight data signal and the first backlight level number are both zero. For the frame image with the actual backlight level of 0-63 orders, the first backlight data signal generated by the first chip is an unavailable signal. Thus, the black block threshold number of levels may be set to greater than or equal to 64.
When the black block threshold level is 64, if a second backlight level corresponding to the second backlight data signal is less than 64, the actual backlight level of the frame image is 0-63, and at this time, the first chip may use the second backlight level obtained by converting the second backlight data signal as the backlight control signal because the first backlight data signal is unavailable.
When the black block threshold level is greater than 64, if a second backlight level corresponding to the second backlight data signal is less than 64, the actual backlight level of the frame image is between 0 level and the black block threshold level, and at the moment, if the second backlight level is 0-63 levels, the first backlight data signal is unavailable and the second backlight data signal is available; and if the second backlight stage number is 63-order black block threshold stage number, the first backlight data signal and the second backlight data signal are both available signals. That is, when the black block threshold number is greater than 64, the second backlight data signal is always available if the second backlight number is less than the black block threshold number.
Further, referring to fig. 5, fig. 5 is a flowchart illustrating a fifth embodiment of the data processing method for backlight control according to the present invention, and based on the embodiment shown in fig. 2, after the step S20 of converting the second backlight data signal and the first backlight data signal into corresponding backlight levels respectively, and selecting one of the two backlight levels as the backlight control signal, the method further includes:
step S30, sending the backlight control signal to a backlight driving module, so that the backlight driving module adjusts the backlight according to the backlight control signal.
In this embodiment, the first chip may transmit the backlight control signal to the backlight driving module of the display device after selecting one of the first backlight stage and the second backlight stage as the backlight control signal. The backlight driving module can adjust the backlight of the display device according to the backlight control signal when the display device displays the current frame image, so that the displayed frame image corresponds to the backlight brightness, and black blocks are avoided.
Further, referring to fig. 6, fig. 6 is a flowchart illustrating a sixth embodiment of the data processing method for backlight control according to the present invention, based on the embodiment shown in fig. 5, the step S10 of generating a first backlight data signal according to a current image sent by a second chip, and receiving a second backlight data signal generated and sent by the second chip according to the current image includes:
step S11, generating a first backlight data signal according to the current image sent by the second chip;
step S12, receiving a second backlight data signal generated and sent by the second chip according to the frame rate of the current image;
in the step S30, the step of sending the backlight control signal to a backlight driving module to enable the backlight driving module to adjust backlight according to the backlight control signal includes:
step S31, obtaining an actual frame rate of the backlight driving module, modulating the backlight control signal according to the actual frame rate, and sending the modulated backlight control signal to the backlight driving module, so that the backlight driving module adjusts backlight according to the backlight control signal.
In this embodiment, the display device may be a high refresh rate display screen. When the image data captured by the second chip is the low frame rate image data, the first chip also needs to perform frame rate conversion on the low frame rate image data so that the display device displays the image picture with the high frame rate. After the first chip obtains the image data sent by the second chip, the original frame rate of the image can be determined, and the actual frame rate of the backlight driving module is obtained, wherein the actual frame rate of the backlight driving module is higher than the original frame rate of the image data.
It can be understood that the signal frequency of the first backlight data signal generated by the first chip is consistent with the actual frame rate of the backlight driving module, and the signal frequency of the second backlight data signal generated by the second chip is consistent with the original frame rate of the image. If the first chip determines that the first backlight progression obtained after the first backlight data conversion is used as the backlight control signal, the first chip may directly send the first backlight progression to the backlight driving module because the frequency of the first backlight progression is also consistent with the actual frame rate of the backlight driving module.
If the first chip determines that the second backlight level corresponding to the second backlight data is used as the backlight control signal, the second backlight level needs to be modulated to generate the backlight control signal consistent with the actual frame rate because the frequency of the second backlight level is consistent with the original frame rate of the image and is inconsistent with the actual frame rate of the light driving module, and then the backlight control signal is sent to the backlight driving module. For example, when the original frame rate of the image is 60Hz and the actual frame rate of the backlight driving module is 120Hz, and when the first chip determines the second backlight progression as the backlight control signal, if the second backlight progression is directly sent to the backlight driving module, the backlight control signal received by the backlight driving module is 60Hz, and the refresh rate of 120Hz cannot be satisfied. Therefore, the first chip needs to repeat the second backlight stage, and sends the second backlight stage to the backlight driving module twice, so that the backlight driving module can receive the backlight control signal of 120Hz actually.
Furthermore, the present invention also provides a computer readable storage medium having a data processing program for backlight control stored thereon. The computer-readable storage medium may be the Memory 20 in the terminal of fig. 1, and may also be at least one of a ROM (Read-Only Memory)/RAM (Random Access Memory), a magnetic disk, and an optical disk, and the computer-readable storage medium includes several instructions for causing a display device with a processor to execute the backlight-controlled data processing method according to the embodiments of the present invention.
It is to be understood that throughout the description of the present specification, reference to the term "one embodiment", "another embodiment", "other embodiments", or "second through nth embodiments", etc., is intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A data processing method for backlight control is applied to a first chip, and is characterized by comprising the following steps:
generating a first backlight data signal according to a current image sent by a second chip, and receiving a second backlight data signal generated and sent by the second chip according to the current image, wherein the processing digits of the first chip and the second chip are different;
and respectively converting the second backlight data signal and the first backlight data signal into corresponding backlight levels, and selecting one of the two backlight levels as a backlight control signal.
2. The backlight-controlled data processing method according to claim 1, wherein the number of processing bits of the first chip is smaller than the number of processing bits of the second chip; the step of converting the second backlight data signal and the first backlight data signal into corresponding backlight levels respectively, and selecting one of the two backlight levels as a backlight control signal includes:
converting the first backlight data signal into a first backlight progression and converting the second backlight data signal into a second backlight progression;
and comparing the second backlight progression with a preset black block threshold progression, and selecting the second backlight progression or the first backlight progression as the backlight control signal based on the comparison result.
3. The backlight-controlled data processing method of claim 2, wherein the step of selecting the second backlight level or the first backlight level as the backlight control signal based on the comparison result comprises:
if the comparison result shows that the second backlight progression is greater than or equal to the black block threshold progression, the backlight control signal is the first backlight progression;
and if the comparison result shows that the second backlight progression is smaller than the black block threshold progression, the backlight control signal is the second backlight progression.
4. The backlight-controlled data processing method according to claim 3, wherein the number of processing bits of the second chip is 10 bits, and the number of processing bits of the first chip is 6 bits.
5. The backlight-controlled data processing method of claim 4, wherein the step of converting the second backlight data signal into a second backlight progression comprises:
converting the second backlight data signal with the data range of 0-1023 into a second backlight stage number with the data range of 0-4095;
the step of converting the first backlight data signal into a first backlight progression comprises:
and converting the first backlight data signal with the data range of 0-63 into a first backlight stage with the data range of 0-4095.
6. The backlight-controlled data processing method according to claim 5, wherein the black block threshold level number is greater than or equal to 64.
7. The backlight-controlled data processing method according to any of claims 1 to 6, wherein after the step of selecting one of two backlight levels as the backlight control signal, further comprising:
and sending the backlight control signal to a backlight driving module so that the backlight driving module adjusts backlight according to the backlight control signal.
8. The backlight-controlled data processing method according to claim 7, wherein the step of receiving a second backlight data signal generated and transmitted by the second chip according to the current image comprises:
receiving a second backlight data signal generated and sent by a second chip according to the frame rate of the current image;
the step of sending the backlight control signal to a backlight driving module includes:
and acquiring the actual frame rate of the backlight driving module, modulating the backlight control signal according to the actual frame rate, and then sending the modulated backlight control signal to the backlight driving module.
9. A display device comprising a memory, a processor and a backlight-controlled data processing program stored on the memory and executable on the processor, wherein: the backlight-controlled data processing program when executed by the processor implements the steps of the backlight-controlled data processing method of any one of claims 1 to 8.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a backlight-controlled data processing program which, when executed by a processor, implements the steps of the backlight-controlled data processing method according to any one of claims 1 to 8.
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