Backlight brightness adjustment method, device, television and storage medium

Abstract

The present application discloses a backlight brightness adjustment method, apparatus, television set and storage medium. The backlight brightness adjustment method is applied to a constant current driving unit and includes the following steps: receiving backlight brightness data sent by a main board; if it is determined that the current is in the brightness automatic adjustment mode, determining a current amplitude corresponding to the backlight lamp according to the backlight brightness data and a preset current setting value; and adjusting the brightness of the backlight lamp based on the current amplitude and the backlight brightness data. The present application solves the technical problem of poor picture display effect after adjusting the brightness of the backlight lamp.

Description

Technical Field

[0001] The present application relates to the field of television technology, and in particular to a backlight brightness adjustment method, device, television, and storage medium. Background Art

[0002] HDR (High-Dynamic Range) can provide more dynamic range and image details than ordinary images, and is generally used in TV display products and photo and video shooting and production. At present, HDR function algorithms are all applied to the motherboard SOC (System on Chip) end, and the constant current drive scheme only performs simple SPI (Serial Peripheral Interface) signal transmission, that is, it changes synchronously with the SPI data sent by the SOC, and cannot actively adjust the channel current. The prior art is that the MCU sets the current parameter configured by the constant current driver IC (integrated circuit) to the maximum value, and then changes the SPI data through the motherboard SOC end to achieve the conditions for the current required for different windows. Although this method can achieve the adjustment of the current size of different windows, it will increase the calculation burden of the motherboard. When the motherboard SPI data changes too much, the current of each channel will change too much, and then flickering is likely to occur, affecting the display effect of the picture. Summary of the invention

[0003] The main purpose of the present application is to provide a backlight brightness adjustment method, device, television and storage medium, aiming to solve the technical problem of poor picture display effect after adjusting the backlight brightness.

[0004] To achieve the above object, the present application provides a backlight brightness adjustment method, which is applied to a television set and includes the following steps:

[0005] Receive backlight brightness data sent by the mainboard;

[0006] If it is determined that the current is currently in the automatic brightness adjustment mode, then determining the current amplitude corresponding to the backlight according to the backlight brightness data and the preset current setting value;

[0007] The brightness of the backlight is adjusted based on the current amplitude and the backlight brightness data.

[0008] The present application also provides a backlight brightness adjustment device, the backlight brightness adjustment device comprising:

[0009] A receiving module, used for receiving backlight brightness data sent by the mainboard;

[0010] A current amplitude determination module, configured to determine the current amplitude corresponding to the backlight lamp according to the backlight brightness data and a preset current setting value if it is determined that the current is in the automatic brightness adjustment mode;

[0011] A backlight lamp brightness adjustment module, configured to adjust the brightness of the backlight lamp based on the current amplitude and the backlight brightness data.

[0012] This application also provides a television set, which is a physical device. The television set includes: a memory, a processor, and a program of the backlight lamp brightness adjustment method stored on the memory and executable on the processor. When the program of the backlight lamp brightness adjustment method is executed by the processor, the steps of the backlight lamp brightness adjustment method as described above can be implemented.

[0013] Optionally, the television set further includes a main board, a backlight lamp, and a power supply, wherein,

[0014] The main board is configured to send backlight brightness data and a backlight control signal to the constant current driving unit for the constant current driving unit to adjust the brightness of the backlight lamp based on the backlight brightness data and the backlight control signal.

[0015] This application also provides a storage medium, which is a computer-readable storage medium. A program for implementing the backlight lamp brightness adjustment method is stored on the computer-readable storage medium. When the program of the backlight lamp brightness adjustment method is executed by a processor, the steps of the backlight lamp brightness adjustment method as described above are implemented.

[0016] This application also provides a computer program product, including a computer program. When the computer program is executed by a processor, the steps of the backlight lamp brightness adjustment method as described above are implemented.

[0017] The present application provides a method and device for adjusting the brightness of a backlight, a television set, and a storage medium. The method for adjusting the brightness of the backlight is applied to a constant current driving unit. By receiving the backlight brightness data sent by the main board, if it is determined that the current is in the automatic brightness adjustment mode, the current amplitude corresponding to the backlight is determined according to the backlight brightness data and a preset current setting value, realizing the dynamic adjustment of the current amplitude based on the backlight brightness data. Furthermore, by adjusting the brightness of the backlight based on the current amplitude and the backlight brightness data, the auxiliary control of the process of adjusting the brightness of the backlight based on the backlight brightness data in the constant current driving unit is realized. Compared with the method of adjusting a fixed maximum current based on SPI data, the present application does not require the main board to calculate and process the SPI data during the switching process of different windows and different scene pictures. Only the required backlight brightness data under the corresponding picture needs to be read. When the SPI data mutates, the constant current driving unit can smooth the current mutation that may be caused by the SPI data mutation through the current amplitude, avoiding the flicker phenomenon caused by the fluctuation of the SPI data, optimizing the picture display effect, and overcoming the technical problem of poor picture display effect after adjusting the brightness of the backlight. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings herein are incorporated into and constitute a part of this specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 Schematic diagram of the terminal structure of the hardware operating environment related to the method for adjusting the brightness of the backlight in an embodiment of the present application;

[0021] Figure 2 Schematic diagram of the terminal structure of the hardware operating environment related to the method for adjusting the brightness of the backlight in another embodiment of the present application;

[0022] Figure 3 Schematic flowchart of an embodiment of the method for adjusting the brightness of the backlight in the present application;

[0023] Figure 4 Schematic flowchart of another embodiment of the method for adjusting the brightness of the backlight in the present application;

[0024] Figure 5 Schematic diagram of the structure of the device for adjusting the brightness of the backlight in an embodiment of the present application.

[0025] The realization of the purpose, functional features, and advantages of this application will be further described with reference to the accompanying drawings in combination with the embodiments. Detailed implementation manners

[0026] To make the above objects, features, and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0027] As Figure 1 shown, Figure 1 is a schematic diagram of the terminal structure of the hardware operating environment involved in the embodiment solution of the present invention.

[0028] The terminal in the embodiment of the present invention is a television.

[0029] As Figure 1 shown, the terminal may include: a processor 1001, such as a CPU, an MCU, etc., a network interface 1004, a user interface 1003, a memory 1005, and a communication bus 1002. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display) and an input unit such as a keyboard (Keyboard). Optionally, the user interface 1003 may further include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a WI-FI interface). The memory 1005 may be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0030] Optionally, the terminal may further include a camera, an RF (Radio Frequency) circuit, sensors, an audio circuit, a WiFi module, etc. Among them, the sensors such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor. Among them, the ambient light sensor can adjust the brightness of the display screen according to the brightness of the ambient light, and the proximity sensor can turn off the display screen and / or the backlight when the mobile terminal is moved to the ear. As a kind of motion sensor, the gravity acceleration sensor can detect the magnitude of the acceleration in each direction (generally three axes). When stationary, it can detect the magnitude and direction of gravity, and can be used for applications that identify the posture of the mobile terminal (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc.; of course, the mobile terminal can also be configured with other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, etc., which will not be elaborated here.

[0031] Optionally, referring to Figure 2 , in another embodiment of the terminal structure of the hardware operating environment involved in the embodiment of the present invention, the television includes a constant current driving unit 100, a main board 200, a backlight 300, and a power supply 400. Among them, the constant current driving unit 100 includes a processor, a memory, and a constant current driving IC. The processor is an MCU. The memory is not shown in the figure. The memory may include an application program for adjusting the backlight brightness. The MCU can be used to call the application program for adjusting the backlight brightness stored in the memory 1005 and execute the steps of the backlight brightness adjustment method described below. The main board 200 includes at least an SOC, and may also include a TCON (Timing Contoller) and a power amplifier, etc. The SOC sends backlight brightness data and a backlight control signal to the MCU for the MCU to adjust the brightness of the backlight 300 based on the backlight brightness data and the backlight control signal. The power supply 400 may include a transformer, a feedback current, an LLC circuit (resonant circuit), a PFC (Power Factor Correction) circuit, a rectification circuit, an EMI (Electromagnetic Interference) circuit, a power input, etc.

[0032] Those skilled in the art can understand that Figure 1 and Figure 2 the terminal structures shown in

[0033] do not constitute a limitation on the terminal, and may include more or fewer components than shown in the figure, or combine certain components, or have different component arrangements. Figure 1As shown, the memory 1005, which is a computer storage medium, may include an operating system, a network communication module, a user interface module, and a backlight brightness adjustment application program.

[0034] In Figure 1 In the terminal shown, the network interface 1004 is mainly used to connect to the background server for data communication with the background server; the user interface 1003 is mainly used to connect to the client (user side) for data communication with the client; and the processor 1001 can be used to call the backlight brightness adjustment application program stored in the memory 1005 and perform the following operations:

[0035] Receive the backlight brightness data sent by the main board;

[0036] If it is determined that the current is in the brightness automatic adjustment mode, then according to the backlight brightness data and a preset current setting value, determine the current amplitude corresponding to the backlight;

[0037] Adjust the brightness of the backlight based on the current amplitude and the backlight brightness data.

[0038] Further, the processor 1001 can call the backlight brightness adjustment application program stored in the memory 1005 and also perform the following operations:

[0039] If it is determined that the current is in the brightness automatic adjustment mode, then determine the total backlight brightness value according to the backlight brightness data;

[0040] If the total backlight brightness value is less than a preset brightness data threshold, then increase and adjust the preset current setting value according to the total backlight brightness value and the brightness data threshold to obtain the current amplitude corresponding to the backlight.

[0041] Further, the processor 1001 can call the backlight brightness adjustment application program stored in the memory 1005 and also perform the following operations:

[0042] Determine the ratio of the total backlight brightness value to the brightness data threshold as the gain coefficient;

[0043] Increase and adjust the preset current setting value according to the gain coefficient to obtain the current amplitude corresponding to the backlight.

[0044] Further, the processor 1001 can call the backlight brightness adjustment application program stored in the memory 1005 and also perform the following operations:

[0045] If the total backlight brightness value is greater than or equal to the preset brightness data threshold, then determine the preset current setting value as the current amplitude corresponding to the backlight.

[0046] Further, the processor 1001 may call the backlight brightness adjustment application program stored in the memory 1005 and further perform the following operations:

[0047] Determine whether there is target brightness data less than the preset brightness lower limit in the backlight brightness data;

[0048] If it is determined that there is target brightness data less than the preset brightness lower limit in the backlight brightness data, determine the target backlight corresponding to the target brightness data, adjust the brightness of the target backlight based on the preset current setting value and the target backlight brightness data, and adjust the brightness of other backlights except the target backlight based on the current amplitude and the backlight brightness data.

[0049] Further, the processor 1001 may call the backlight brightness adjustment application program stored in the memory 1005 and further perform the following operations:

[0050] If it is determined that the current is not in the brightness automatic adjustment mode, adjust the brightness of the backlight based on the preset current setting value.

[0051] An embodiment of the present application provides a backlight brightness adjustment method. In the first embodiment of the backlight brightness adjustment method of the present application, refer to Figure 3 , the backlight brightness adjustment method is applied to a constant current driving unit, and includes the following steps:

[0052] Step S10, receive the backlight brightness data sent by the main board;

[0053] In this embodiment, it should be noted that the backlight brightness adjustment method is applicable to an LED display based on the Localdimming (zone dimming) technology. The backlight brightness adjustment method is applied to a constant current driving unit, and the constant current driving unit is an LED (light-emitting diode) constant current driving chip. Since an LED is a semiconductor device with sensitive characteristics and has a negative temperature characteristic, it is necessary to stabilize its working state and protect it during application, thus generating the concept of driving. The constant current driving unit and the main board transmit backlight brightness data through SPI signals. The backlight brightness data is SPI data, which is the ratio of the current value required for the current frame to the maximum current value, and is used to adjust the brightness of the backlight by adjusting the current value required for the current frame. The MCU in the constant current driving unit configures the current amplitude for the constant current driving IC, and then determines the actual current value in the constant current driving IC based on the backlight brightness data and the configured current amplitude, so as to realize the adjustment of the brightness of the backlight.

[0054] Specifically, receive the SPI data sent by the SOC in the main board, and parse the backlight brightness data from the SPI data. It is easy to understand that the backlight brightness data corresponds to the brightness adjustment channel of the backlight. That is, if the backlight is adjusted by the brightness of more than one brightness adjustment channel, there will also be multiple pieces of backlight brightness data.

[0055] Step S20, if it is determined that the current is in the brightness automatic adjustment mode, then determine the current amplitude corresponding to the backlight according to the backlight brightness data and the preset current setting value;

[0056] In this embodiment, specifically, obtain the switch control signal of the brightness automatic adjustment mode sent by the main board, and judge whether the current is in the brightness automatic adjustment mode according to the switch control signal of the brightness automatic adjustment mode. If the control signal for turning on the brightness automatic adjustment mode is recognized, it is determined that the current is in the brightness automatic adjustment mode. Then, according to the backlight brightness data and the preset current setting value, determine the current amplitude configured in the constant current driving IC for the constant current driving IC to adjust the brightness of the backlight based on the current amplitude. Among them, the preset current setting value is the initial setting value of the current amplitude, which can be set according to the actual situation and power threshold, etc. This embodiment does not limit this. The current amplitude can be greater than or less than the preset current setting value. For example, if the backlight brightness data is too large and there is a risk of over-power, the risk of over-power can be avoided by reducing the current amplitude. If the backlight brightness data is too small, it may cause a sudden change in current, resulting in the picture suddenly changing from a larger brightness to a smaller brightness, presenting a flickering phenomenon. Then, the current amplitude can be increased to increase the picture brightness and avoid the flickering phenomenon. For example, the backlight brightness data of the previous frame is 100%, and the backlight brightness data of the next frame is 20%. If the current amplitude is fixed at 100 mA, the backlight current of the previous frame is 100 mA, and the backlight current of the next frame is 20 mA, and the current changes suddenly, and the brightness also changes suddenly. However, if the current amplitude of the previous frame is fixed at 100 mA and the current amplitude of the next frame is 300 mA, the backlight current of the previous frame is 100 mA, and the backlight current of the next frame is 60 mA. Compared with the fixed current amplitude, the change in current is smaller, and the change in brightness is also smaller.

[0057] The brightness automatic adjustment mode is a mode for automatically adjusting the brightness of the backlight. In an implementable manner, the brightness automatic adjustment mode can be the HDR mode, or the switch control signal of the brightness automatic adjustment mode can be associated with the switch control signal of the HDR mode. If the control signal for turning on the HDR mode is recognized, the brightness automatic adjustment mode is automatically turned on to generate a control signal for turning on the brightness automatic adjustment mode. If the control signal for turning off the HDR mode is recognized, the brightness automatic adjustment mode is automatically turned off to generate a control signal for turning off the brightness automatic adjustment mode.

[0058] It should be noted that the method for determining the current amplitude corresponding to the backlight lamp according to the backlight brightness data and the preset current setting value can adjust the preset current setting value according to the magnitude relationship between the sum of the backlight brightness data and the preset data threshold to obtain the current amplitude corresponding to the backlight lamp, or can adjust the preset current setting value according to the sum of the backlight brightness data of some channels and the preset data threshold to obtain the current amplitude corresponding to the backlight lamp, or can adjust the preset current setting value according to the magnitude relationship between the backlight brightness data of a certain channel and the preset data threshold to obtain the current amplitude corresponding to the backlight lamp. The preset data threshold can be determined according to the actual situation, and this embodiment does not limit this.

[0059] If a control signal for turning off the brightness automatic adjustment mode is recognized, it is determined that the current is not in the brightness automatic adjustment mode, and then it is determined that the current is not in the brightness automatic adjustment mode, and then the brightness of the backlight lamp does not need to be adjusted.

[0060] Optionally, after the step of receiving the backlight brightness data sent by the main board, it further includes:

[0061] If it is determined that the current is not in the brightness automatic adjustment mode, the brightness of the backlight lamp is adjusted based on the preset current setting value.

[0062] In this embodiment, specifically, a switch control signal for the brightness automatic adjustment mode sent by the main board is obtained, and it is judged whether the current is in the brightness automatic adjustment mode according to the switch control signal for the brightness automatic adjustment mode. If a control signal for turning off the brightness automatic adjustment mode is recognized, the brightness of the backlight lamp is adjusted based on the preset current setting value.

[0063] Step S30, adjusting the brightness of the backlight lamp based on the current amplitude and the backlight brightness data.

[0064] In this embodiment, specifically, the MCU sends the current amplitude and the backlight brightness data to the constant current driving IC, so that the constant current driving IC calculates and determines the actual current value based on the backlight brightness data and the current amplitude, and adjusts the brightness of the backlight lamp based on the actual current value.

[0065] Optionally, the step of adjusting the brightness of the backlight lamp based on the current amplitude and the backlight brightness data includes:

[0066] Step S31, judging whether there is target brightness data less than the preset brightness lower limit in the backlight brightness data;

[0067] Step S32: If it is determined that there is target brightness data in the backlight brightness data that is less than the preset brightness lower limit, determine the target backlight corresponding to the target brightness data, adjust the brightness of the target backlight based on the preset current setting value and the target backlight brightness data, and adjust the brightness of the other backlights except the target backlight based on the current amplitude and the backlight brightness data.

[0068] In this embodiment, specifically, a relatively small brightness lower limit is preset, and the backlight brightness data is compared with the brightness lower limit one by one to determine whether there is target brightness data in the backlight brightness data that is less than the preset brightness lower limit. If there is no target brightness data in the backlight brightness data that is less than the preset brightness lower limit, the MCU sends the current amplitude and the backlight brightness data to the constant current driving IC for the constant current driving IC to calculate and determine the actual current value based on the backlight brightness data and the current amplitude, and adjust the brightness of the backlight based on the actual current value; if there is target brightness data in the backlight brightness data that is less than the preset brightness lower limit, determine the target backlight corresponding to the target brightness data, and the MCU sends the preset current setting value and the target backlight brightness data to the constant current driving IC for the constant current driving IC to calculate and determine the actual current value of the target backlight based on the preset current setting value and the target backlight brightness data, and adjust the brightness of the target backlight based on the actual current value of the target backlight, and send the current amplitude and the backlight brightness data to the constant current driving IC for the constant current driving IC to calculate and determine the actual current values of the other backlights except the target backlight based on the current amplitude and the backlight brightness data, and adjust the brightness of the other backlights except the target backlight based on the actual current values of the other backlights except the target backlight. Among them, the brightness lower limit can be determined according to actual needs, big data or actual test results, etc., and this embodiment does not limit this.

[0069] In this embodiment, different brightness adjustments are made for different bright areas in the picture. For the darker areas where the backlight brightness data is less than the preset brightness lower limit, no brightness increase processing is performed. For the brighter areas where the backlight brightness data is greater than the preset brightness lower limit, brightness increase processing is performed, which can increase the contrast between the dark and bright parts in the picture.

[0070] In this embodiment, the backlight brightness adjustment method is applied to a constant current driving unit. By receiving the backlight brightness data sent by the main board, if it is determined that the current is in the brightness automatic adjustment mode, then according to the backlight brightness data and a preset current setting value, the current amplitude corresponding to the backlight is determined, realizing the dynamic adjustment of the current amplitude based on the backlight brightness data. Furthermore, by adjusting the brightness of the backlight based on the current amplitude and the backlight brightness data, the auxiliary control of the process of adjusting the backlight brightness based on the backlight brightness data in the constant current driving unit is realized. Compared with the method of adjusting a fixed maximum current value based on SPI data, in this application, the main board does not need to calculate and process the SPI data during the switching process of different windows and different scene pictures. It only needs to read out the required backlight brightness data for the corresponding picture. The MCU in the constant current driving unit configures the current amplitude for the constant current driving IC, and then determines the actual current value in the constant current driving IC based on the backlight brightness data and the configured current amplitude to realize the adjustment of the backlight brightness. Among them, the backlight brightness is jointly determined by the backlight brightness data and the current amplitude. The backlight brightness data is regulated by the main board. If the backlight brightness data changes greatly while the current amplitude remains fixed, it will cause a large change in the actual current value in the constant current driving IC, resulting in a flickering phenomenon. However, in this application, the backlight brightness data is further monitored in the constant current driving unit and associated with the current amplitude. The sudden change of the backlight brightness data is restricted and adjusted through the current amplitude. Furthermore, when the SPI data changes suddenly, the sudden change of the current that may be caused by the sudden change of the SPI data can be smoothed in the constant current driving unit through the current amplitude, avoiding the influence of the sudden change of the backlight brightness data on the backlight brightness and preventing the flickering phenomenon, optimizing the picture display effect, and overcoming the technical problem of poor picture display effect after adjusting the backlight brightness.

[0071] Further, in another embodiment of the backlight brightness adjustment method of this application, referring to Figure 4 , the step of, if it is determined that the current is in the brightness automatic adjustment mode, then determining the current amplitude corresponding to the backlight according to the backlight brightness data and a preset current setting value includes:

[0072] Step S21, if it is determined that the current is in the brightness automatic adjustment mode, then determine the total backlight brightness value according to the backlight brightness data;

[0073] In this embodiment, specifically, obtain the switch control signal of the automatic brightness adjustment mode sent by the main board, and determine whether the current is in the automatic brightness adjustment mode according to the switch control signal of the automatic brightness adjustment mode. If the control signal for turning on the automatic brightness adjustment mode is recognized, it is determined that the current is in the automatic brightness adjustment mode. Then, sum up the backlight brightness data corresponding to all brightness adjustment channels to obtain the total backlight brightness value. For example, if the current display screen is adjusted through n brightness adjustment channels, there are n backlight brightness data DATA, and the total backlight brightness value S = DATA(1) +... + DATA(n).

[0074] Step S22, if the total backlight brightness value is less than the preset brightness data threshold, then increase and adjust the preset current setting value according to the total backlight brightness value and the brightness data threshold to obtain the current amplitude corresponding to the backlight lamp.

[0075] In this embodiment, specifically, compare the total backlight brightness value with the preset brightness data threshold to determine whether the total backlight brightness value is less than the preset brightness data threshold. If the total backlight brightness value is less than the preset brightness data threshold, then increase and adjust the preset current setting value according to the numerical relationship between the total backlight brightness value and the brightness data threshold to obtain the current amplitude corresponding to the backlight lamp. If the total backlight brightness value is less than the preset brightness data threshold, it is not necessary to adjust the brightness of the backlight lamp. Among them, the numerical relationship between the total backlight brightness value and the brightness data threshold can be the ratio of the total backlight brightness value to the brightness data threshold, the difference between the total backlight brightness value and the brightness data threshold, the functional relationship between the total backlight brightness value and the brightness data threshold, etc. The preset brightness data threshold can be determined according to the actual situation, big data, actual test results, etc. This embodiment does not limit this. In an implementable manner, the preset brightness data threshold is the sum of the single-channel brightness data thresholds of each channel. For example, if the current display screen is adjusted through n brightness adjustment channels, there are n single-channel brightness data thresholds DATA1, and the brightness data threshold S1 = DATA1(1) +... + DATA1(n).

[0076] Optionally, the step of increasing and adjusting the preset current setting value according to the total backlight brightness value and the brightness data threshold to obtain the current amplitude corresponding to the backlight lamp includes:

[0077] Step S221, determine the ratio of the total backlight brightness value to the brightness data threshold as the gain coefficient;

[0078] Step S222, increase and adjust the preset current setting value according to the gain coefficient to obtain the current amplitude corresponding to the backlight lamp.

[0079] In this embodiment, specifically, calculate the ratio of the total backlight brightness value to the brightness data threshold, determine the ratio of the total backlight brightness value to the brightness data threshold as the gain coefficient, and multiply the preset current setting value by the gain coefficient to obtain the current amplitude corresponding to the backlight lamp after the increase adjustment. The current amplitude is greater than the preset current setting value. Therefore, based on the current amplitude and the brightness of the backlight lamp after the adjustment of the backlight brightness data, the brightness of the backlight lamp is greater than that based on the preset current setting value and the backlight brightness data. Therefore, the overall brightness of the backlight lamp can be controlled within a larger brightness range while avoiding the risk of over-power. For example, if the total backlight brightness value is X1, and the preset current setting value I0 is the maximum current amplitude without the risk of over-power, then X1 is preset as the brightness data threshold. Since the picture has light and dark areas, when the total backlight brightness value is X2 (X2 is less than X1), the product of X2 and I0 is less than the product of X1 and I0, so there is no risk of over-power. If the current amplitude is increased to I0 * X2 / X1, the brightness of the backlight lamp can be maximally increased while ensuring no risk of over-power.

[0080] Optionally, after the step of determining the total backlight brightness value according to the backlight brightness data, the following is further included:

[0081] Step S23, if the total backlight brightness value is greater than or equal to the preset brightness data threshold, determine the preset current setting value as the current amplitude corresponding to the backlight lamp.

[0082] In this embodiment, specifically, compare the total backlight brightness value with the preset brightness data threshold, determine whether the total backlight brightness value is less than the preset brightness data threshold. If the total backlight brightness value is greater than or equal to the preset brightness data threshold, determine the preset current setting value as the current amplitude corresponding to the backlight lamp.

[0083] In this embodiment, the increased adjusted current amplitude is greater than the preset current setting value. Therefore, the brightness of the backlight lamp adjusted based on the current amplitude and the backlight brightness data is greater than the brightness of the backlight lamp adjusted based on the preset current setting value and the backlight brightness data. Therefore, the overall brightness of the backlight lamp can be controlled within a larger brightness range without exceeding the power of turning off the brightness automatic adjustment mode. This not only increases the current and improves the screen brightness but also avoids the flickering phenomenon caused by SPI data fluctuations, optimizing the screen display effect. The method for adjusting the brightness of the backlight lamp through the constant current driving unit has a small amount of calculation and is simple. It can complete the backlight brightness adjustment and refresh within each frame data cycle, alleviating the calculation burden of the main board. At the same time, it ensures that there is no sudden change in the backlight current, realizes smooth switching of the screen, and overcomes the technical problem of poor screen display effect after adjusting the brightness of the backlight lamp.

[0084] Further, an embodiment of the present application also provides a backlight lamp brightness adjustment device. Referring to Figure 5 , the backlight lamp brightness adjustment device is applied to a backlight lamp brightness adjustment device, and the backlight lamp brightness adjustment device includes:

[0085] A receiving module 10 for receiving backlight brightness data sent by the main board;

[0086] A current amplitude determination module 20 for determining the current amplitude corresponding to the backlight lamp according to the backlight brightness data and a preset current setting value if it is determined that the current is in the brightness automatic adjustment mode;

[0087] A backlight lamp brightness adjustment module 30 for adjusting the brightness of the backlight lamp based on the current amplitude and the backlight brightness data.

[0088] Optionally, the current amplitude determination module 20 is further configured to:

[0089] Determine the total backlight brightness value according to the backlight brightness data if it is determined that the current is in the brightness automatic adjustment mode;

[0090] If the total backlight brightness value is less than a preset brightness data threshold, increase and adjust the preset current setting value according to the total backlight brightness value and the brightness data threshold to obtain the current amplitude corresponding to the backlight lamp.

[0091] Optionally, the current amplitude determination module 20 is further configured to:

[0092] Determine the ratio of the total backlight brightness value to the brightness data threshold as the gain coefficient;

[0093] Increase and adjust the preset current setting value according to the gain coefficient to obtain the current amplitude corresponding to the backlight lamp.

[0094] Optionally, the current amplitude determining module 20 is further configured to:

[0095] If the total backlight brightness value is greater than or equal to a preset brightness data threshold, determine a preset current setting value as the current amplitude corresponding to the backlight lamp.

[0096] Optionally, the backlight lamp brightness adjusting module 30 is further configured to:

[0097] Determine whether there is target brightness data less than a preset brightness lower limit in the backlight brightness data;

[0098] If it is determined that there is target brightness data less than a preset brightness lower limit in the backlight brightness data, determine the target backlight lamp corresponding to the target brightness data, adjust the brightness of the target backlight lamp based on a preset current setting value and the target backlight brightness data, and adjust the brightness of other backlight lamps except the target backlight lamp based on the current amplitude and the backlight brightness data.

[0099] Optionally, the backlight lamp brightness adjusting module 30 is further configured to:

[0100] If it is determined that the current is not in the brightness automatic adjustment mode, adjust the brightness of the backlight lamp based on a preset current setting value.

[0101] The backlight lamp brightness adjusting device provided by the present invention adopts the backlight lamp brightness adjusting method in the above embodiment, and solves the technical problem of poor picture display effect after adjusting the brightness of the backlight lamp. Compared with the prior art, the beneficial effects of the backlight lamp brightness adjusting device provided by the embodiments of the present invention are the same as those of the backlight lamp brightness adjusting method provided by the above embodiment, and other technical features in the backlight lamp brightness adjusting device are the same as those disclosed in the method of the above embodiment, and will not be elaborated herein.

[0102] Further, the present application also provides a computer program product, including a computer program, and when the computer program is executed by a processor, the steps of the backlight lamp brightness adjusting method as described above are implemented.

[0103] The computer program product provided by the present application solves the technical problem of poor picture display effect after adjusting the brightness of the backlight lamp. Compared with the prior art, the beneficial effects of the computer program product provided by the embodiments of the present invention are the same as those of the backlight lamp brightness adjusting method provided by the above embodiment, and will not be elaborated herein.

[0104] The above are only the preferred embodiments of the present application, which do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be similarly included within the patent scope of the present application.

Claims

1. A backlight brightness adjustment method, characterized in that, the backlight brightness adjustment method is applied to a constant current drive unit, and includes the following steps: Receiving backlight brightness data sent by the main board; If it is determined that the current is in the brightness automatic adjustment mode, then according to the backlight brightness data and a preset current setting value, determining the current amplitude corresponding to the backlight; Adjusting the brightness of the backlight based on the current amplitude and the backlight brightness data; The step of if it is determined that the current is in the brightness automatic adjustment mode, then according to the backlight brightness data and a preset current setting value, determining the current amplitude corresponding to the backlight includes: If it is determined that the current is in the brightness automatic adjustment mode, then determining the total backlight brightness value according to the backlight brightness data; If the total backlight brightness value is less than a preset brightness data threshold, then increasing and adjusting the preset current setting value according to the total backlight brightness value and the brightness data threshold to obtain the current amplitude corresponding to the backlight; If the total backlight brightness value is greater than or equal to the preset brightness data threshold, then determining the preset current setting value as the current amplitude corresponding to the backlight.

2. The backlight brightness adjustment method according to claim 1, characterized in that, the step of increasing and adjusting the preset current setting value according to the total backlight brightness value and the brightness data threshold to obtain the current amplitude corresponding to the backlight includes: Determining the ratio of the total backlight brightness value to the brightness data threshold as the gain coefficient; Increasing and adjusting the preset current setting value according to the gain coefficient to obtain the current amplitude corresponding to the backlight.

3. The backlight brightness adjustment method according to claim 1, characterized in that, the step of adjusting the brightness of the backlight based on the current amplitude and the backlight brightness data includes: Judging whether there is target brightness data less than a preset brightness lower limit in the backlight brightness data; If it is determined that there is target brightness data less than the preset brightness lower limit in the backlight brightness data, then determining the target backlight corresponding to the target brightness data, adjusting the brightness of the target backlight based on the preset current setting value and the target backlight brightness data, and adjusting the brightness of other backlights except the target backlight based on the current amplitude and the backlight brightness data.

4. The backlight brightness adjustment method according to claim 1, characterized in that, after the step of receiving the backlight brightness data sent by the main board, it further includes: If it is determined that the current is not in the brightness automatic adjustment mode, then adjusting the brightness of the backlight based on the preset current setting value.

5. A backlight brightness adjustment device, characterized in that, the backlight brightness adjustment device includes: A receiving module, configured to receive backlight brightness data sent by the main board; A current amplitude determination module, configured to if it is determined that the current is in the brightness automatic adjustment mode, then determine the current amplitude corresponding to the backlight according to the backlight brightness data and a preset current setting value; A backlight brightness adjustment module, configured to adjust the brightness of the backlight based on the current amplitude and the backlight brightness data; The current amplitude determination module is further configured to: If it is determined that the current is in the automatic brightness adjustment mode, determine the total backlight brightness according to the backlight brightness data; If the total backlight brightness is less than a preset brightness data threshold, increase and adjust a preset current setting value according to the total backlight brightness and the brightness data threshold to obtain the current amplitude corresponding to the backlight; If the total backlight brightness is greater than or equal to the preset brightness data threshold, determine the preset current setting value as the current amplitude corresponding to the backlight.

6. A television set, Characterized in that The television set includes a constant current driving unit, and the constant current driving unit includes: At least one processor; and A memory communicatively connected to the at least one processor; wherein The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the steps of the backlight brightness adjustment method according to any one of claims 1 to 4.

7. The television set according to claim 6, Characterized in that The television set further includes a main board, a backlight, and a power supply, wherein The main board is configured to send backlight brightness data and a backlight control signal to the constant current driving unit for the constant current driving unit to adjust the brightness of the backlight based on the backlight brightness data and the backlight control signal.

8. A storage medium, Characterized in that The storage medium is a computer-readable storage medium, and a program for implementing the backlight brightness adjustment method is stored on the computer-readable storage medium. The program for implementing the backlight brightness adjustment method is executed by a processor to implement the steps of the backlight brightness adjustment method according to any one of claims 1 to 4.

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