Brightness adjusting circuit, brightness adjusting method and electronic equipment

Abstract

The invention discloses a brightness adjusting circuit, a brightness adjusting method and electronic equipment, and belongs to the technical field of display. The circuit comprises a system-on-chip and a time schedule controller. The system-on-chip is used for transmitting a brightness adjusting instruction to the time schedule controller; the time schedule controller is used for transmitting an audio closing instruction to the system-on-chip according to the brightness adjusting instruction, and is also used for controlling the pixel circuit to execute brightness adjustment based on the blank screen signal according to the brightness adjusting instruction, and generating a picture signal under the condition that the brightness adjustment is completed; the system-on-chip is also used for controlling the audio circuit to stop generating the audio signal according to the audio closing instruction; and controlling the audio circuit to generate an audio signal under the condition that the brightness adjustment is completed. Sound and picture synchronization of the electronic equipment can be guaranteed, and the use experience of a user is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of display technology, and in particular to a brightness adjustment circuit, a brightness adjustment method and an electronic device. Background Art

[0002] With the development of display technology, electronic devices based on technologies such as OLED (Organic Light-Emitting Diode) and LCD (Liquid Crystal Display) have emerged one after another. Generally, electronic devices are equipped with display screens and audio players, which display images through the display screen and play audio through the audio player. In the process of displaying images and playing audio by electronic devices, if the electronic devices perform brightness adjustment, the audio and image may be out of sync, affecting the user experience. Summary of the invention

[0003] The present application provides a brightness adjustment circuit, a brightness adjustment method and an electronic device, which can ensure the synchronization of sound and picture after brightness adjustment and improve the user experience. The technical solution includes the following contents.

[0004] In a first aspect, a brightness adjustment circuit is provided, the circuit comprising a system-level chip and a timing controller;

[0005] The system-level chip is used to transmit a brightness adjustment instruction to the timing controller;

[0006] The timing controller is used to transmit an audio off instruction to the system-level chip according to the brightness adjustment instruction, control the pixel circuit to perform brightness adjustment based on the black screen signal according to the brightness adjustment instruction, and generate a picture signal when the brightness adjustment is completed;

[0007] The system-level chip is also used to control the audio circuit to stop generating the audio signal according to the audio off instruction, and control the audio circuit to generate the audio signal when the brightness adjustment is completed.

[0008] In a possible implementation, the circuit further includes an integrated circuit bus, wherein the integrated circuit bus connects the system-level chip and the timing controller;

[0009] The integrated circuit bus is used to transmit the brightness adjustment instruction and the audio shut-off instruction.

[0010] In a possible implementation, the pixel circuit includes devices of multiple pixel points;

[0011] The timing controller is also used to collect the driving voltage of each device, generate an adjustment completion signal according to each driving voltage, and transmit the adjustment completion signal to the system-level chip, wherein the adjustment completion signal is used to indicate that the brightness adjustment is completed.

[0012] In a possible implementation, the circuit further includes an integrated circuit bus, wherein the integrated circuit bus connects the system-level chip and the timing controller;

[0013] The integrated circuit bus is used to transmit the adjustment completion signal.

[0014] In a possible implementation, the circuit further includes a signal line, wherein the signal line connects the system-level chip and the timing controller;

[0015] The signal line is used to transmit the adjustment completion signal.

[0016] In a possible implementation, the timing controller is further used to determine that the brightness adjustment is completed when the timing reaches a time threshold; the system-level chip includes a timer;

[0017] The system-level chip is further used to send a timing instruction to the timer;

[0018] The timer is used to execute timing according to the timing instruction, and transmit a timing completion signal to the system-level chip when the timing reaches the time threshold, wherein the timing completion signal is used to indicate that the brightness adjustment is completed.

[0019] In a possible implementation, the timing controller includes a memory, and the memory is used to store picture-related data;

[0020] The timing controller is also used to read the picture-related data from the memory when the electronic device is turned on, and control the pixel circuit to generate the picture signal according to the picture-related data.

[0021] In a possible implementation, the system-level chip is used to obtain the brightness adjustment instruction when any of the following occurs:

[0022] Turn on electronic devices;

[0023] The working time of the pixel circuit reaches a set time;

[0024] The user triggers the brightness adjustment control.

[0025] In a second aspect, a brightness adjustment method is provided, the method comprising:

[0026] Transmitting brightness adjustment instructions to the timing controller via the system-level chip;

[0027] Transmitting an audio off instruction to the system-level chip through the timing controller according to the brightness adjustment instruction, controlling the pixel circuit to perform brightness adjustment based on the black screen signal according to the brightness adjustment instruction, and generating a picture signal when the brightness adjustment is completed;

[0028] The system-level chip controls the audio circuit to stop generating the audio signal according to the audio shut-off instruction, and controls the audio circuit to generate the audio signal when the brightness adjustment is completed.

[0029] In a possible implementation manner, the system-on-chip and the timing controller are connected via an integrated circuit bus, and the integrated circuit bus is used to transmit the brightness adjustment instruction and the audio shutoff instruction.

[0030] In a possible implementation, the pixel circuit includes devices of multiple pixel points; and the method further includes:

[0031] The timing controller collects the driving voltage of each device, generates an adjustment completion signal according to each driving voltage, and transmits the adjustment completion signal to the system-level chip, wherein the adjustment completion signal is used to indicate that the brightness adjustment is completed.

[0032] In a possible implementation manner, the transmitting the adjustment completion signal to the system-level chip includes:

[0033] The adjustment completion signal is transmitted to the system-on-chip via an integrated circuit bus, and the integrated circuit bus connects the system-on-chip and the timing controller.

[0034] In a possible implementation manner, the transmitting the adjustment completion signal to the system-level chip includes:

[0035] The adjustment completion signal is transmitted to the system-on-chip via a signal line, and the signal line connects the system-on-chip and the timing controller.

[0036] In a possible implementation, the method further includes:

[0037] By means of the timing controller, when the timing reaches a time threshold, determining that the brightness adjustment is completed;

[0038] Sending a timing instruction to a timer through the system-on-chip, wherein the system-on-chip includes the timer;

[0039] The timer executes timing according to the timing instruction, and when the timing reaches the time threshold, transmits a timing completion signal to the system-level chip, wherein the timing completion signal is used to indicate that the brightness adjustment is completed.

[0040] In a possible implementation, the timing controller includes a memory, and the memory is used to store picture-related data; the method further includes:

[0041] Through the timing controller, when the electronic device is turned on, the picture-related data is read from the memory, and the pixel circuit is controlled to generate the picture signal according to the picture-related data.

[0042] In a possible implementation, the system-level chip is used to obtain the brightness adjustment instruction when any of the following occurs:

[0043] Turn on electronic devices;

[0044] The working time of the pixel circuit reaches a set time;

[0045] The user triggers the brightness adjustment control.

[0046] In a third aspect, an electronic device is provided, comprising the brightness adjustment circuit described in the first aspect and any possible implementation manner, wherein the brightness adjustment circuit is used to execute the brightness adjustment method described in the second aspect and any possible implementation manner.

[0047] In a fourth aspect, a computer-readable storage medium is provided, in which at least one computer program is stored. The at least one computer program is loaded and executed by a processor so that an electronic device implements the brightness adjustment method described in the second aspect and any possible implementation method.

[0048] In a fifth aspect, a computer program is also provided, wherein the computer program is at least one, and the at least one computer program is loaded and executed by a processor to enable the electronic device to implement the brightness adjustment method described in the second aspect and any possible implementation method.

[0049] In a sixth aspect, a computer program product is also provided, wherein at least one computer program is stored in the computer program product, and the at least one computer program is loaded and executed by a processor so that an electronic device can implement the brightness adjustment method described in the second aspect and any possible implementation method.

[0050] In a seventh aspect, a chip is further provided, the chip comprising the brightness adjustment circuit described in the first aspect and any possible implementation manner, the brightness adjustment circuit being used to execute the brightness adjustment method described in the second aspect and any possible implementation manner.

[0051] The technical solution provided by this application brings at least the following beneficial effects:

[0052] The brightness adjustment circuit provided by the present application, during the brightness adjustment period, the timing controller controls the pixel circuit to generate a black screen signal, and the system-level chip controls the audio circuit to stop generating an audio signal, so that the electronic device displays a black screen and does not play audio. After the brightness adjustment, the timing controller controls the pixel circuit to generate a picture signal, and the system-level chip controls the audio circuit to generate an audio signal, so that the electronic device displays the picture and plays audio. Therefore, the synchronization of audio and video of the electronic device can be guaranteed, and the user experience can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0054] Figure 1 is a structural schematic diagram of a brightness adjustment circuit provided in an embodiment of the present application;

[0055] Figure 2 is a schematic diagram of related signals during brightness adjustment provided by an embodiment of the present application;

[0056] Figure 3 is a structural schematic diagram of another brightness adjustment circuit provided in an embodiment of the present application;

[0057] Figure 4 is a structural schematic diagram of another brightness adjustment circuit provided in an embodiment of the present application;

[0058] Figure 5 is a structural schematic diagram of another brightness adjustment circuit provided in an embodiment of the present application;

[0059] Figure 6 This is a schematic diagram of brightness adjustment provided by an embodiment of the present application;

[0060] Figure 7 is a structural schematic diagram of another brightness adjustment circuit provided in an embodiment of the present application;

[0061] Figure 8 This is a data access schematic diagram provided by an embodiment of the present application;

[0062] Fig. 9 is a flow chart of a brightness adjustment method provided in an embodiment of the present application;

[0063] Fig.10 It is a structural diagram of a terminal device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0064] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0065] It should be noted that the terms "first", "second", etc. in this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0066] In the field of display technology, electronic devices are usually equipped with a display screen and an audio player, which displays images through the display screen and plays audio through the audio player. In the process of displaying images and playing audio by the electronic device, if the electronic device performs brightness adjustment, the sound and picture may be out of sync, affecting the user's experience. In this regard, an embodiment of the present application provides a brightness adjustment circuit, which can ensure that the sound and picture are synchronized after the brightness adjustment, thereby improving the user's experience.

[0067] like Figure 1 As shown, Figure 1 This is a schematic diagram of a brightness adjustment circuit provided in an embodiment of the present application. The brightness adjustment circuit is deployed in an electronic device, and the electronic device has a picture display function and an audio playback function. For example, the electronic device can be a terminal device equipped with a display screen and an audio player. The brightness adjustment circuit is used to adjust the brightness of the picture displayed on the display screen.

[0068] Optionally, the terminal device may be any electronic device product that can interact with a user through one or more methods such as a keyboard, a touchpad, a remote controller, voice interaction, or a handwriting device. For example, the terminal device may be a smart phone, a tablet computer, a laptop computer, a desktop computer, a smart speaker, a smart watch, a PC (Personal Computer), a mobile phone, a PDA (Personal Digital Assistant), a wearable device, a PPC (Pocket PC), a smart car machine, a smart TV, etc.

[0069] It should be understood that the terminal devices mentioned above are only examples, and other existing or future terminal devices, if applicable to the present application, should also be included in the scope of protection of the present application and are included here by reference.

[0070] In the embodiment of the present application, the brightness adjustment circuit includes a system on chip (SOC) 10 and a timing controller (TCON) 20, and the brightness adjustment circuit is connected to a pixel circuit 30 and an audio circuit 40. The system on chip 10 is connected to the audio circuit 40, and the timing controller 20 is connected to the pixel circuit 30.

[0071] exist Figure 1 In the structural drawings of the following embodiments, a black circle is used to mark the input end, and a white circle is used to mark the output end. Figure 1 As shown, the output end of the audio circuit 40 is connected to the input end of the system-level chip 10 ; the output end of the system-level chip 10 is connected to the input end of the timing controller 20 ; and the output end of the timing controller 20 is connected to the input end of the pixel circuit 30 .

[0072] Among them, the system-level chip 10 is used to transmit a brightness adjustment instruction to the timing controller 20; the timing controller 20 is used to transmit an audio off instruction to the system-level chip 10 according to the brightness adjustment instruction, control the pixel circuit to perform brightness adjustment based on the black screen signal according to the brightness adjustment instruction, and generate a picture signal when the brightness adjustment is completed; the system-level chip 10 is also used to control the audio circuit to stop generating an audio signal according to the audio off instruction, and control the audio circuit to generate an audio signal when the brightness adjustment is completed.

[0073] The brightness adjustment circuit is introduced in detail below.

[0074] Exemplarily, the system-on-chip 10 is used to obtain a brightness adjustment instruction and transmit the brightness adjustment instruction to the timing controller 20 .

[0075] The timing of generating the brightness adjustment instruction is not limited here. Exemplarily, the system-level chip is used to obtain the brightness adjustment instruction when any one of events 1 to 3 occurs.

[0076] Event 1, the electronic device is turned on. That is, at a certain moment when the electronic device is turned on, the system-on-chip 10 generates a brightness adjustment instruction.

[0077] Event 2, the working time of the pixel circuit reaches the set time. That is, the system-level chip 10 records the working time of the pixel circuit 30, and generates a brightness adjustment instruction when the working time reaches the set time. The set time can be a preset value, or the set time is a randomly generated value, for example, the set time is 4 hours. Optionally, the timing controller 20 is used to control the start and stop of the pixel circuit 30. Based on this, when the timing controller 20 controls the start of the pixel circuit 30, it sends pixel circuit start information to the system-level chip 10 to inform the system-level chip 10 that the pixel circuit 30 has been started through the pixel circuit start information. After receiving the start information, the system-level chip 10 records the working time of the pixel circuit 30 in real time.

[0078] Event 3: The user triggers the brightness adjustment control. The electronic device is equipped with a brightness adjustment control, or the display screen can display the brightness adjustment control, and the user can trigger the brightness adjustment control. The system-level chip 10 generates a brightness adjustment instruction based on the operation of triggering the brightness adjustment control.

[0079] In this example, the brightness adjustment instruction is used to adjust the brightness, including increasing the brightness of the screen, decreasing the brightness of the screen, adjusting the brightness of the screen to be consistent (i.e., brightness consistency adjustment), adjusting the brightness of a certain area in the screen, etc. Among them, adjusting the brightness of the area includes increasing the brightness of the area, decreasing the brightness of the area, adjusting the brightness of the area to be consistent, etc. The embodiment of the present application does not limit the area. For example, the area is the area where the logo is located, or the area is a fixed area in the screen, such as 50% of the area in the center of the screen.

[0080] like Figure 2 As shown, the signal "sense_cmd" represents the signal of the brightness adjustment instruction. Before the system-level chip 10 generates the brightness adjustment instruction, the signal "sense_cmd" is maintained at a low level (for example, 0). When the system-level chip 10 generates the brightness adjustment instruction, the signal "sense_cmd" becomes a high level (for example, 1), and the high level is maintained for several clock cycles (for example, one clock cycle). After that, the signal "sense_cmd" maintains a low level until the system-level chip 10 generates the next brightness adjustment instruction. After the system-level chip 10 generates the brightness adjustment instruction, it transmits the brightness adjustment instruction to the timing controller 20 so that the timing controller 20 obtains the brightness adjustment instruction.

[0081] The timing controller 20 is used to transmit an audio off instruction to the system-on-chip 10 according to the brightness adjustment instruction, so that the system-on-chip 10 obtains the audio off instruction. The audio off instruction is used to instruct to stop playing audio.

[0082] Alternatively, if Figure 3 As shown, the brightness adjustment circuit also includes an integrated circuit bus (Inter-Integrated Circuit, IIC) 50, which connects the system-level chip 10 and the timing controller 20. The integrated circuit bus 50 is used to transmit brightness adjustment instructions and audio off instructions. Figure 3 The audio circuit 40 and the pixel circuit 30 are omitted.

[0083] The integrated circuit bus 50 is a serial communication bus for transmitting data. In this example, the system-level chip 10 can transmit the brightness adjustment instruction to the timing controller 20 through the integrated circuit bus 50, and the timing controller 20 can transmit the audio off instruction to the system-level chip 10 through the integrated circuit bus 50. Since the audio off instruction is transmitted after the brightness adjustment instruction, the brightness adjustment instruction and the audio off instruction are transmitted successively through the same integrated circuit bus 50, which can reduce the wiring and ensure that the instructions are transmitted in an orderly and correct manner.

[0084] The system-on-chip 10 is further used to control the audio circuit 40 to stop generating audio signals according to the audio shut-off instruction.

[0085] In this example, the system-level chip 10 can control the audio circuit 40 to generate an audio signal. In this case, the audio player plays audio based on the audio signal. When the system-level chip 10 receives an audio off instruction, the audio circuit 40 is controlled to stop generating the audio signal. Since no audio signal is generated, the audio player cannot play the audio, resulting in the effect of stopping the audio playback. Figure 2 As shown, the signal "Voice_flag" indicates whether an audio signal is generated. Before the brightness is adjusted, the signal "Voice_flag" is maintained at a high level, indicating that an audio signal is generated. During the brightness adjustment, the signal "Voice_flag" is maintained at a low level, indicating that no audio signal is generated.

[0086] The timing controller 20 is also used to control the pixel circuit 30 to generate a black screen signal according to the brightness adjustment instruction, control the pixel circuit 30 to perform brightness adjustment based on the black screen signal, and control the pixel circuit 30 to generate a picture signal when the brightness adjustment is completed.

[0087] In this example, the timing controller 20 can control the pixel circuit 30 to generate a picture signal. In this case, the display screen displays the picture based on the picture signal. When the timing controller 20 receives a brightness adjustment instruction, it controls the pixel circuit 30 to generate a black screen signal. At this time, the display screen displays a black screen based on the black screen signal, resulting in the effect of stopping the display of the picture. Figure 2 As shown, the signal "G1", the signal "G2" and the signal "Data line" represent three signals generated by the pixel circuit 30, and these three signals together reflect the picture signal or the black screen signal. Before the brightness adjustment, the signal "G1", the signal "G2" and the signal "Data line" represent the picture signal. During the brightness adjustment, the signal "G1", the signal "G2" and the signal "Data line" represent the black screen signal.

[0088] The timing controller 20 is also used to control the pixel circuit 30 to perform brightness adjustment based on the black screen signal. The timing controller 20 can determine whether the brightness adjustment has been completed. If the timing controller 20 determines that the brightness adjustment is completed, the pixel circuit 30 is controlled to generate a picture signal. Figure 2 As shown, after the brightness is adjusted, the signal “ G1 ”, the signal “ G2 ” and the signal “Data line” represent the picture signal.

[0089] The system-level chip 10 is also used to control the audio circuit 40 to generate an audio signal when the brightness adjustment is completed. That is, the system-level chip 10 can also determine whether the brightness adjustment is completed. When the system-level chip 10 determines that the brightness adjustment is completed, the audio circuit 40 is controlled to generate an audio signal. Figure 2 As shown, after the brightness is adjusted, the signal "Voice_flag" maintains a high level, indicating that an audio signal is generated.

[0090] The embodiment of the present application does not limit the way in which the system-level chip 10 and the timing controller 20 determine that the brightness adjustment is completed. Exemplarily, after the pixel circuit 30 completes the brightness adjustment, an adjustment completion signal can be generated, and the adjustment completion signal is used to indicate that the brightness adjustment has been completed. The pixel circuit 30 sends an adjustment completion signal to the timing controller 20 to notify the timing controller 20 that the brightness adjustment has been completed through the adjustment completion signal. The timing controller 20 transmits the adjustment completion signal to the system-level chip 10 to notify the system-level chip 10 that the brightness adjustment has been completed through the adjustment completion signal.

[0091] Alternatively, the pixel circuit 30 includes devices of multiple pixel points. The timing controller 20 is also used to collect the driving voltage of each device, generate an adjustment completion signal according to each driving voltage, and transmit the adjustment completion signal to the system-level chip 10, where the adjustment completion signal is used to indicate that the brightness adjustment is completed.

[0092] The pixel circuit 30 includes devices of multiple pixel points, any of which may include but is not limited to any of the types such as LDE (Light-Emitting Diode), OLED (Organic Light-Emitting Diode), QLED (Quantum Dot Light Emitting Diodes), and Micro LED (MicroLight Emitting Diodes). It is understandable that the device type can be flexibly selected according to actual needs, and other existing or future device types, if applicable to the present application, should also be included in the scope of protection of the present application and are included here by reference. Applying a driving voltage at both ends of the device can make the device emit light. The brightness of the light emitted by the device is the brightness of the pixel point in the picture corresponding to the device. In general, the driving voltage is positively correlated with the brightness, that is, the greater the driving voltage of the device, the brighter the device emits.

[0093] In this example, each pixel of the display screen corresponds to a device. For example, if the display screen has 400×300 pixels, the pixel circuit has 400×300 devices. During the brightness adjustment process, the driving voltage of each device changes according to a certain rule. For example, for brightness consistency adjustment, the driving voltage of each device can be adjusted to a fixed value in order from top to bottom and from left to right, so that the brightness of each device is consistent. When the driving voltage of the last device is adjusted to a fixed value, the brightness consistency adjustment is completed.

[0094] During the brightness adjustment process, the timing controller 20 can collect the driving voltage of each device according to a certain time period. The time period is not limited here. For example, the time period is a preset value, or the time period is a randomly generated value, for example, the time period is 5 clock cycles. Figure 2 As shown, the signal "Sense line" represents the driving voltage of a device during brightness adjustment, and the signal "SMP" represents the driving voltage of a device collected according to a time period during brightness adjustment. Since each device corresponds to a signal "Sense line" and a signal "SMP", if the pixel circuit 30 includes M×N pixel points, there are M×N devices, M×N signals "Sense line" and M×N signals "SMP", and M and N are the same or different positive integers.

[0095] The timing controller 20 can determine whether the brightness adjustment is completed according to the collected driving voltages of each device. When the brightness adjustment is determined to be completed, the timing controller 20 generates an adjustment completion signal and transmits the adjustment completion signal to the system-level chip 10 to notify the system-level chip 10 that the brightness adjustment has been completed through the adjustment completion signal. Figure 2 As shown, before the brightness adjustment, the signal "ECD" maintains a high level, and during the brightness adjustment, the signal "ECD" maintains a low level. When the brightness adjustment is completed, the signal "ECD" becomes a high level, based on which the signal "ECD" can represent an adjustment completion signal.

[0096] The driving voltage of each device is collected by the timing controller 20, so as to realize real-time monitoring of the progress of brightness adjustment, so as to determine whether the brightness adjustment has been completed through each driving voltage. When the timing controller 20 determines that the brightness adjustment has been completed, the system-level chip 10 is notified of the completion of the brightness adjustment through the adjustment completion signal, so that the system-level chip 10 controls the audio circuit 40 to generate an audio signal, and the timing controller 20 controls the pixel circuit to generate a picture signal, so as to realize the synchronization of audio and picture.

[0097] In one possible implementation, Figure 3 As shown, the brightness adjustment circuit further includes an integrated circuit bus 50, and the integrated circuit bus 50 connects the system-on-chip 10 and the timing controller 20. The integrated circuit bus 50 is used to transmit an adjustment completion signal.

[0098] That is, when the timing controller 20 generates an adjustment completion signal, the adjustment completion signal is transmitted to the system-on-chip 10 via the integrated circuit bus 50. Figure 2 As shown, the signal "IIC_Read" represents the signal in the integrated circuit bus 50. Before and during the brightness adjustment, the signal "IIC_Read" is maintained at a low level, indicating that the integrated circuit bus 50 does not transmit a signal. After the brightness adjustment, the signal "IIC_Read" becomes a high level, indicating that the integrated circuit bus 50 transmits an adjustment completion signal. It should be noted that after the integrated circuit bus 50 transmits the adjustment completion signal, the signal "IIC_Read" is maintained at a low level.

[0099] Transmitting the adjustment completion signal through the integrated circuit bus 50 can reduce wiring. In addition, since the adjustment completion signal is transmitted after the brightness adjustment instruction and the audio off instruction, it can ensure that the instructions are transmitted in an orderly and correct manner.

[0100] In another possible implementation, Figure 4 As shown, the brightness adjustment circuit further includes a signal line 60, and the signal line 60 connects the system-level chip 10 and the timing controller 20. The signal line 60 is used to transmit an adjustment completion signal.

[0101] That is to say, when the timing controller 20 generates an adjustment completion signal, the adjustment completion signal is transmitted to the system-level chip 10 through the signal line 60. Among them, the signal line 60 may include at least one cable, and may also include an optical cable. For example, the signal line 60 is a transmission line composed of multiple cables. The adjustment completion signal is transmitted through the signal line 60, which ensures that the adjustment completion signal is isolated from other signals of the brightness adjustment circuit, and ensures that the system-level chip 10 can accurately receive the adjustment completion signal, thereby ensuring the synchronization of audio and video.

[0102] In another possible implementation, Figure 5 As shown, the timing controller 20 is also used to determine that the brightness adjustment is completed when the timing reaches the time threshold. The system-level chip 10 includes a timer 70. The system-level chip 10 is also used to send a timing instruction to the timer 70. The timer 70 is used to execute timing according to the timing instruction, and when the timing reaches the time threshold, transmit a timing completion signal to the system-level chip, and the timing completion signal is used to indicate that the brightness adjustment is completed.

[0103] In this example, the timing controller 20 has a timing control function and can control the pixel circuit 30 according to the clock cycle. Based on this, the timing controller 20 itself has a timing function and can increase the timing by 1 every other clock cycle. When the timing controller 20 obtains the brightness adjustment instruction, or when the timing controller 20 transmits the audio off instruction to the system-level chip 10, the timing controller 20 starts timing, and the timing increases by 1 every other clock cycle. If the timing reaches the time threshold, the timing controller 20 determines that the brightness adjustment is completed and controls the pixel circuit 30 to generate a picture signal.

[0104] On the other hand, the system-level chip 10 includes a timer 70. When the system-level chip 10 transmits a brightness adjustment instruction to the timing controller 20, or when the system-level chip 10 obtains an audio off instruction, the system-level chip 10 sends a timing instruction to the timer 70, and the timing instruction is used to indicate the start of timing. After receiving the timing instruction, the timer 70 starts timing, and the timing increases by 1 every clock cycle. If the timing reaches the time threshold, the timer 70 transmits a timing completion signal to the system-level chip 10, and the timing completion signal is used to indicate that the timing has been completed.

[0105] When the timing of the timing controller 20 reaches the time threshold, the timing controller 20 determines that the brightness adjustment is completed. Therefore, when the timing reaches the time threshold, the timing is completed, which is equivalent to the brightness adjustment being completed. Based on this, the timing completion signal can indicate that the brightness adjustment is completed.

[0106] After receiving the timing completion signal, the system-level chip 10 determines that the brightness adjustment is completed and can control the audio circuit 40 to generate an audio signal.

[0107] The time threshold is a value preset according to manual experience, for example, the time threshold is preset to 15 minutes according to manual experience. Alternatively, the timing controller 20 controls the pixel circuit 30 to perform at least one brightness adjustment, and the time taken for each brightness adjustment is counted, and the time threshold is not less than the maximum value of each counted time. For example, the time taken for the pixel circuit 30 to perform brightness adjustment five times is 5 minutes, 5.5 minutes, 7 minutes, 6 minutes and 8 minutes respectively, then the time threshold is not less than 8 minutes, for example, the time threshold is 10 minutes.

[0108] For the timer 70 and the timing controller 20, since the timing increases by 1 every other clock cycle, when the timing reaches the time threshold, it is equivalent to the number of clock cycles that have passed after the brightness adjustment starts to reach the time threshold. For example, assuming that one second is one clock cycle and the time threshold is 10 minutes, the time threshold is equivalent to 600 clock cycles. When 600 clock cycles have passed after the brightness adjustment starts to be executed, the timing reaches the time threshold. Optionally, the initial value of the timing is 0. After the brightness adjustment starts to be executed, the timing value increases by 1 for each clock cycle. Based on this, the timing value represents the number of clock cycles that have passed. When the value is equal to the time threshold, it is determined that the timing reaches the time threshold.

[0109] It should be noted that the timer 70 and the timing controller 20 start timing at the same time. That is, both the timer 70 and the timing controller 20 start timing when the timing controller 20 obtains the brightness adjustment instruction, or both the timer 70 and the timing controller 20 start timing when the system-level chip 10 obtains the audio off instruction, and so on. Timing by the timer 70 and the timing controller 20 to determine whether the brightness adjustment has been completed, on the one hand, realizes the non-multiplexing of the integrated circuit bus and reduces the transmission impact on other signals. On the other hand, it is realized that there is no need to deploy additional signal lines. Since the noise of the signal line will affect the integrated circuit bus, therefore, not introducing additional signal lines can reduce the impact on the signal transmitted by the integrated circuit bus.

[0110] Based on the above content, we can know that Figure 6As shown, in an embodiment of the present application, the electronic device displays a picture and plays audio. If the user triggers the brightness adjustment control, the system-level chip sends a brightness adjustment instruction to the timing controller. The timing controller controls the pixel circuit to generate a black screen signal based on the brightness adjustment instruction, and transmits an audio shutdown instruction to the system-level chip. The system-level chip controls the audio circuit to stop generating an audio signal based on the audio shutdown instruction. At this time, the electronic device displays a black screen and does not play audio. Then, the timing controller controls the pixel circuit to perform brightness adjustment based on the black screen signal. If the brightness adjustment is completed, the timing controller controls the pixel circuit to generate a picture signal, and the system-level chip controls the audio circuit to generate an audio signal. In this case, the electronic device displays a picture and plays audio.

[0111] In one possible implementation, Figure 7 As shown, the timing controller 20 includes a memory 80 for storing picture-related data. The timing controller 20 is also used to read the picture-related data from the memory 80 when the electronic device is turned on, and control the pixel circuit 30 to generate a picture signal according to the picture-related data.

[0112] The embodiment of the present application does not limit the type of the memory 80. Exemplarily, the memory 80 is at least one of EEPROM (Electrically Erasable Programmable Read Only Memory), RAM (Random Access Memory), semiconductor memory, etc.

[0113] The timing controller 20 is used to transmit the picture-related data to the memory 80, and the memory 80 is used to store the picture-related data. The picture-related data includes first data related to picture display and second data related to picture rendering. For example, the first data includes brightness data, and the second data includes status data of whether the picture rendering technology is enabled.

[0114] Optionally, the brightness data may be data after brightness adjustment. For example, after adjusting the brightness of the logo or the brightness of the picture, the timing controller 20 stores the adjusted brightness data in the memory 80. When the electronic device is turned on, the timing controller 20 reads the brightness data from the memory 80 and controls the pixel circuit 30 to generate a picture signal according to the brightness data.

[0115] In some cases, brightness data is data of an electronic device in a specific state, which includes a standby state and a working state. Generally, when the user has not operated the electronic device for a set time, for example, the user has not operated the electronic device for 30 minutes, or when the display screen of the electronic device has no signal input for a set time, for example, the display screen has not input a signal for 15 minutes, the electronic device is in standby state. If the electronic device is turned on and is not in standby state, the electronic device is in working state. When the state of the electronic device changes to a specific state, the timing controller 20 reads the brightness data from the memory 80 and controls the pixel circuit 30 to generate a picture signal according to the brightness data.

[0116] The picture rendering technology includes technologies such as high dynamic range (HDR) and standard dynamic range (SDR), and the status data can indicate whether HDR or SDR is enabled. When the electronic device is turned on, if the timing controller 20 determines that HDR is enabled according to the status data, the timing controller 20 controls the pixel circuit 30 to generate a picture signal according to the HDR rendering technology; if the timing controller 20 determines that HDR is not enabled or SDR is enabled according to the status data, the timing controller 20 controls the pixel circuit 30 to generate a picture signal according to the SDR rendering technology.

[0117] like Figure 8 As shown, the system-level chip sends an instruction to the timing controller. If the instruction is a specific instruction, the timing controller stores the picture-related data in the memory. For example, if the instruction is a brightness adjustment instruction, the timing controller stores the brightness data in the memory. For another example, if the instruction is a status instruction of whether the picture rendering technology such as HDR or SDR is enabled, the timing controller stores the status data in the memory. If the electronic device is not restarted, the timing controller immediately responds to the instruction and performs the operation corresponding to the instruction. For example, the timing controller controls the pixel circuit to perform brightness adjustment according to the brightness adjustment instruction, or the timing controller controls the pixel circuit to generate a picture signal according to the HDR enabling instruction according to the HDR technology, and so on. If the electronic device is restarted, the timing controller reads the stored data from the memory and performs the operation corresponding to the instruction based on the read data.

[0118] In this way, after the electronic device is turned on, the screen is directly displayed according to the last screen-related data, thereby improving the user experience. In addition, since the screen-related data is stored in the memory 80, the timing controller 20 can directly read the screen-related data from the memory 80, reducing the resources required for interaction and improving the interaction efficiency, thereby reducing the boot time and improving the user experience.

[0119] In actual applications, the memory 80 is also used to store other data, for example, the memory 80 is also used to store the number of brightness adjustments, the number of component modules (such as the system-level chip 10, the timing controller 20, the panel carrying the brightness adjustment circuit, etc.), the production date of the component, etc.

[0120] In the above-mentioned brightness adjustment circuit, on the one hand, the timing controller 20 controls the pixel circuit 30 to generate a black screen signal according to the brightness adjustment instruction, so that the electronic device displays a black screen during the brightness adjustment period. On the other hand, the timing controller 20 transmits an audio shutdown instruction to the system-level chip 10 according to the brightness adjustment instruction, so that the system-level chip 10 controls the audio circuit 40 to stop generating an audio signal according to the audio shutdown instruction, so that the electronic device does not play audio during the brightness adjustment period. When the brightness adjustment is completed, on the one hand, the pixel circuit 30 is controlled by the timing controller 20 to generate a picture signal, so that the electronic device displays a picture after the brightness adjustment. On the other hand, the audio circuit is controlled by the system-level chip 10 to generate an audio signal, so that the electronic device plays audio after the brightness adjustment.

[0121] Since the electronic device displays a black screen and does not play audio during brightness adjustment, and displays images and plays audio after brightness adjustment, the electronic device can ensure synchronization of audio and video of the electronic device, thereby improving the user experience.

[0122] The embodiment of the present application provides a brightness adjustment method, which can be applied to the above-mentioned computer system and is executed by an electronic device. Fig. 9 As shown, the method includes the following steps.

[0123] Step 901: transmitting a brightness adjustment instruction to a timing controller via the system-on-chip.

[0124] Step 902, transmitting an audio off instruction to the system-level chip through the timing controller according to the brightness adjustment instruction, controlling the pixel circuit to perform brightness adjustment based on the black screen signal according to the brightness adjustment instruction, and generating a picture signal when the brightness adjustment is completed.

[0125] Step 903 , the system-level chip controls the audio circuit to stop generating the audio signal according to the audio off instruction, and controls the audio circuit to generate the audio signal when the brightness adjustment is completed.

[0126] In a possible implementation, the system-on-chip and the timing controller are connected via an integrated circuit bus, and the integrated circuit bus is used to transmit brightness adjustment instructions and audio shut-off instructions.

[0127] In one possible implementation, the pixel circuit includes devices of multiple pixel points; the method also includes: collecting the driving voltage of each device through a timing controller, generating an adjustment completion signal according to each driving voltage, transmitting the adjustment completion signal to the system-level chip, and the adjustment completion signal is used to indicate the completion of brightness adjustment.

[0128] In a possible implementation, transmitting the adjustment completion signal to the system-on-chip includes: transmitting the adjustment completion signal to the system-on-chip via an integrated circuit bus, wherein the integrated circuit bus connects the system-on-chip and the timing controller.

[0129] In a possible implementation, transmitting the adjustment completion signal to the system-on-chip includes: transmitting the adjustment completion signal to the system-on-chip through a signal line, where the signal line connects the system-on-chip and the timing controller.

[0130] In a possible implementation, the method also includes: determining, through a timing controller, that brightness adjustment is completed when the timing reaches a time threshold; sending a timing instruction to a timer through a system-level chip, the system-level chip including a timer; executing timing according to the timing instruction through the timer, and transmitting a timing completion signal to the system-level chip when the timing reaches the time threshold, the timing completion signal being used to indicate that brightness adjustment is completed.

[0131] In a possible implementation, the timing controller includes a memory for storing picture-related data; the method further includes: reading the picture-related data from the memory through the timing controller when the electronic device is turned on, and controlling the pixel circuit to generate a picture signal according to the picture-related data.

[0132] In one possible implementation, the system-level chip is used to obtain a brightness adjustment instruction when any of the following occurs: the electronic device is turned on; the working time of the pixel circuit reaches a set time; the user triggers the brightness adjustment control.

[0133] It should be noted that the implementation methods of the above-mentioned method embodiments can be found in the description of the brightness adjustment circuit. The implementation principles of the two are similar and will not be repeated here. The information (including but not limited to user device information, user personal information, etc.), data (including but not limited to data for analysis, stored data, displayed data, etc.) and signals involved in this application are all authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data need to comply with relevant laws, regulations and standards in relevant regions.

[0134] In the above method, during the brightness adjustment period, the timing controller controls the pixel circuit to generate a black screen signal, and the system-level chip controls the audio circuit to stop generating an audio signal, so that the electronic device displays a black screen and does not play audio. After the brightness adjustment, the timing controller controls the pixel circuit to generate a picture signal, and the system-level chip controls the audio circuit to generate an audio signal, so that the electronic device displays the picture and plays audio. Therefore, the synchronization of audio and video of the electronic device can be guaranteed, improving the user experience.

[0135] Fig.10 The structure block diagram of a terminal device 1000 provided by an exemplary embodiment of the present application is shown. The terminal device 1000 includes: a processor 1001 and a memory 1002 .

[0136] The processor 1001 may include one or more processing cores, such as a 4-core processor, an 8-core processor, etc. The processor 1001 may be implemented in at least one hardware form of DSP (Digital Signal Processing), FPGA (Field-Programmable Gate Array), and PLA (Programmable Logic Array). The processor 1001 may also include a main processor and a coprocessor. The main processor is a processor for processing data in an awake state, also known as a CPU (Central Processing Unit); the coprocessor is a low-power processor for processing data in a standby state. In some embodiments, the processor 1001 may be integrated with a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content to be displayed on the display screen. In some embodiments, the processor 1001 may also include an AI (Artificial Intelligence) processor, which is used to process computing operations related to machine learning.

[0137] The memory 1002 may include one or more computer-readable storage media, which may be non-transitory. The memory 1002 may also include a high-speed random access memory, and a non-volatile memory, such as one or more disk storage devices, flash memory storage devices. In some embodiments, the non-transitory computer-readable storage medium in the memory 1002 is used to store at least one computer program, which is used to be executed by the processor 1001 to implement the brightness adjustment method provided in the method embodiment of the present application.

[0138] In some embodiments, the terminal device 1000 may further optionally include: a peripheral device interface 1003 and at least one peripheral device. The processor 1001, the memory 1002 and the peripheral device interface 1003 may be connected via a bus or a signal line. Each peripheral device may be connected to the peripheral device interface 1003 via a bus, a signal line or a circuit board. Specifically, the peripheral device includes: at least one of a radio frequency circuit 1004, a display screen 1005, a camera assembly 1006, an audio circuit 1007 and a power supply 1008.

[0139] The peripheral device interface 1003 may be used to connect at least one peripheral device related to I / O (Input / Output) to the processor 1001 and the memory 1002. In some embodiments, the processor 1001, the memory 1002, and the peripheral device interface 1003 are integrated on the same chip or circuit board; in some other embodiments, any one or two of the processor 1001, the memory 1002, and the peripheral device interface 1003 may be implemented on a separate chip or circuit board, which is not limited in this embodiment.

[0140] The radio frequency circuit 1004 is used to receive and transmit RF (Radio Frequency) signals, also known as electromagnetic signals. The radio frequency circuit 1004 communicates with the communication network and other communication devices through electromagnetic signals. The radio frequency circuit 1004 converts the electrical signal into an electromagnetic signal for transmission, or converts the received electromagnetic signal into an electrical signal. Optionally, the radio frequency circuit 1004 includes: an antenna system, an RF transceiver, one or more amplifiers, a tuner, an oscillator, a digital signal processor, a codec chipset, a user identity module card, etc. The radio frequency circuit 1004 can communicate with other terminals through at least one wireless communication protocol. The wireless communication protocol includes but is not limited to: the World Wide Web, a metropolitan area network, an intranet, various generations of mobile communication networks (2G, 3G, 4G and 5G), a wireless local area network and / or a WiFi (Wireless Fidelity) network. In some embodiments, the radio frequency circuit 1004 may also include circuits related to NFC (Near Field Communication), which is not limited in this application.

[0141] The display screen 1005 is used to display a UI (User Interface). The UI may include graphics, text, icons, videos, and any combination thereof. When the display screen 1005 is a touch display screen, the display screen 1005 also has the ability to collect touch signals on the surface or above the surface of the display screen 1005. The touch signal can be input to the processor 1001 as a control signal for processing. At this time, the display screen 1005 can also be used to provide virtual buttons and / or virtual keyboards, also known as soft buttons and / or soft keyboards. In some embodiments, the display screen 1005 can be one, arranged on the front panel of the terminal device 1000; in other embodiments, the display screen 1005 can be at least two, respectively arranged on different surfaces of the terminal device 1000 or in a folding design; in other embodiments, the display screen 1005 can be a flexible display screen, arranged on a curved surface or a folding surface of the terminal device 1000. Even, the display screen 1005 can also be arranged as a non-rectangular irregular figure, that is, a special-shaped screen. The display screen 1005 can be made of materials such as LCD (Liquid Crystal Display) and OLED (Organic Light-Emitting Diode).

[0142] The camera assembly 1006 is used to capture images or videos. Optionally, the camera assembly 1006 includes a front camera and a rear camera. Typically, the front camera is arranged on the front panel of the terminal, and the rear camera is arranged on the back of the terminal. In some embodiments, there are at least two rear cameras, which are any one of a main camera, a depth of field camera, a wide-angle camera, and a telephoto camera, so as to realize the fusion of the main camera and the depth of field camera to realize the background blur function, the fusion of the main camera and the wide-angle camera to realize the panoramic shooting and VR (Virtual Reality) shooting function or other fusion shooting functions. In some embodiments, the camera assembly 1006 may also include a flash. The flash can be a monochrome temperature flash or a dual-color temperature flash. A dual-color temperature flash refers to a combination of a warm light flash and a cold light flash, which can be used for light compensation at different color temperatures.

[0143] The audio circuit 1007 may include a microphone and a speaker. The microphone is used to collect sound waves from the user and the environment, and convert the sound waves into electrical signals and input them into the processor 1001 for processing, or input them into the radio frequency circuit 1004 to achieve voice communication. For the purpose of stereo acquisition or noise reduction, there may be multiple microphones, which are respectively arranged at different parts of the terminal device 1000. The microphone may also be an array microphone or an omnidirectional acquisition microphone. The speaker is used to convert the electrical signal from the processor 1001 or the radio frequency circuit 1004 into sound waves. The speaker may be a traditional film speaker or a piezoelectric ceramic speaker. When the speaker is a piezoelectric ceramic speaker, it can not only convert the electrical signal into sound waves audible to humans, but also convert the electrical signal into sound waves inaudible to humans for purposes such as ranging. In some embodiments, the audio circuit 1007 may also include a headphone jack.

[0144] The power supply 1008 is used to power various components in the terminal device 1000. The power supply 1008 can be an alternating current, a direct current, a disposable battery, or a rechargeable battery. When the power supply 1008 includes a rechargeable battery, the rechargeable battery can be a wired rechargeable battery or a wireless rechargeable battery. A wired rechargeable battery is a battery charged through a wired line, and a wireless rechargeable battery is a battery charged through a wireless coil. The rechargeable battery can also be used to support fast charging technology.

[0145] In some embodiments, the terminal device 1000 further includes one or more sensors 1009 . The one or more sensors 1009 include, but are not limited to: an acceleration sensor 1011 , a gyroscope sensor 1012 , a pressure sensor 1013 , an optical sensor 1014 , and a proximity sensor 1015 .

[0146] The acceleration sensor 1011 can detect the magnitude of acceleration on the three coordinate axes of the coordinate system established by the terminal device 1000. For example, the acceleration sensor 1011 can be used to detect the components of gravity acceleration on the three coordinate axes. The processor 1001 can control the display screen 1005 to display the user interface in a horizontal view or a vertical view according to the gravity acceleration signal collected by the acceleration sensor 1011. The acceleration sensor 1011 can also be used to collect game or user motion data.

[0147] The gyro sensor 1012 can detect the body direction and rotation angle of the terminal device 1000, and the gyro sensor 1012 can cooperate with the acceleration sensor 1011 to collect the user's 3D actions on the terminal device 1000. The processor 1001 can implement the following functions based on the data collected by the gyro sensor 1012: motion sensing (such as changing the UI according to the user's tilt operation), image stabilization during shooting, game control, and inertial navigation.

[0148] The pressure sensor 1013 can be set on the side frame of the terminal device 1000 and / or the lower layer of the display screen 1005. When the pressure sensor 1013 is set on the side frame of the terminal device 1000, the user's holding signal of the terminal device 1000 can be detected, and the processor 1001 performs left and right hand recognition or shortcut operations according to the holding signal collected by the pressure sensor 1013. When the pressure sensor 1013 is set on the lower layer of the display screen 1005, the processor 1001 controls the operability controls on the UI interface according to the user's pressure operation on the display screen 1005. The operability controls include at least one of a button control, a scroll bar control, an icon control, and a menu control.

[0149] The optical sensor 1014 is used to collect the ambient light intensity. In one embodiment, the processor 1001 can control the display brightness of the display screen 1005 according to the ambient light intensity collected by the optical sensor 1014. Specifically, when the ambient light intensity is high, the display brightness of the display screen 1005 is increased; when the ambient light intensity is low, the display brightness of the display screen 1005 is reduced. In another embodiment, the processor 1001 can also dynamically adjust the shooting parameters of the camera assembly 1006 according to the ambient light intensity collected by the optical sensor 1014.

[0150] The proximity sensor 1015, also called a distance sensor, is usually arranged on the front panel of the terminal device 1000. The proximity sensor 1015 is used to collect the distance between the user and the front of the terminal device 1000. In one embodiment, when the proximity sensor 1015 detects that the distance between the user and the front of the terminal device 1000 is gradually decreasing, the processor 1001 controls the display screen 1005 to switch from the screen-on state to the screen-off state; when the proximity sensor 1015 detects that the distance between the user and the front of the terminal device 1000 is gradually increasing, the processor 1001 controls the display screen 1005 to switch from the screen-off state to the screen-on state.

[0151] Those skilled in the art will understand that Fig.10 The structure shown in the figure does not constitute a limitation on the terminal device 1000, and may include more or fewer components than shown in the figure, or combine certain components, or adopt a different component arrangement.

[0152] In an exemplary embodiment, a computer-readable storage medium is further provided, in which at least one computer program is stored. The at least one computer program is loaded and executed by a processor to enable an electronic device to implement any of the above brightness adjustment methods.

[0153] Optionally, the computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a compact disc (CD-ROM), a magnetic tape, a floppy disk, an optical data storage device, etc.

[0154] In an exemplary embodiment, a computer program is further provided. The computer program is at least one, and the at least one computer program is loaded and executed by a processor to enable the electronic device to implement any of the above brightness adjustment methods.

[0155] In an exemplary embodiment, a computer program product is further provided. The computer program product stores at least one computer program. The at least one computer program is loaded and executed by a processor to enable an electronic device to implement any of the above brightness adjustment methods.

[0156] It should be understood that the "plurality" mentioned in this article refers to two or more. "And / or" describes the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0157] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0158] The above description is only an exemplary embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the principles of the present application shall be included in the protection scope of the present application.

Claims

1. A brightness adjustment circuit, characterized in that: The circuit includes a system-on-chip and a timing controller; The system-level chip is used to transmit a brightness adjustment instruction to the timing controller; The timing controller is used to transmit an audio off instruction to the system-level chip according to the brightness adjustment instruction, control the pixel circuit to perform brightness adjustment based on the black screen signal according to the brightness adjustment instruction, and generate a picture signal when the brightness adjustment is completed; The system-level chip is also used to control the audio circuit to stop generating the audio signal according to the audio off instruction, and control the audio circuit to generate the audio signal when the brightness adjustment is completed.

2. The circuit according to claim 1, characterized in that The circuit further comprises an integrated circuit bus, wherein the integrated circuit bus connects the system-on-chip and the timing controller; The integrated circuit bus is used to transmit the brightness adjustment instruction and the audio shut-off instruction.

3. The circuit according to claim 1, characterized in that The pixel circuit includes devices of multiple pixel points; The timing controller is also used to collect the driving voltage of each device, generate an adjustment completion signal according to each driving voltage, and transmit the adjustment completion signal to the system-level chip, wherein the adjustment completion signal is used to indicate that the brightness adjustment is completed.

4. The circuit according to claim 3, characterized in that The circuit further comprises an integrated circuit bus, wherein the integrated circuit bus connects the system-on-chip and the timing controller; The integrated circuit bus is used to transmit the adjustment completion signal.

5. The circuit according to claim 3, characterized in that The circuit further comprises a signal line, wherein the signal line connects the system-level chip and the timing controller; The signal line is used to transmit the adjustment completion signal.

6. The circuit according to claim 1, characterized in that The timing controller is further used to determine that the brightness adjustment is completed when the timing reaches a time threshold; the system-level chip includes a timer; The system-level chip is further used to send a timing instruction to the timer; The timer is used to execute timing according to the timing instruction, and transmit a timing completion signal to the system-level chip when the timing reaches the time threshold, wherein the timing completion signal is used to indicate that the brightness adjustment is completed.

7. The circuit according to any one of claims 1 to 6, characterized in that: The timing controller comprises a memory, and the memory is used to store picture-related data; The timing controller is also used to read the picture-related data from the memory when the electronic device is turned on, and control the pixel circuit to generate the picture signal according to the picture-related data.

8. The circuit according to any one of claims 1 to 6, characterized in that: The system-level chip is used to obtain the brightness adjustment instruction when any of the following occurs: Turn on electronic devices; The working time of the pixel circuit reaches a set time; The user triggers the brightness adjustment control.

9. A brightness adjustment method, characterized in that: The method comprises: Transmitting brightness adjustment instructions to the timing controller via the system-level chip; Transmitting an audio off instruction to the system-level chip through the timing controller according to the brightness adjustment instruction, controlling the pixel circuit to perform brightness adjustment based on the black screen signal according to the brightness adjustment instruction, and generating a picture signal when the brightness adjustment is completed; The system-level chip controls the audio circuit to stop generating the audio signal according to the audio shut-off instruction, and controls the audio circuit to generate the audio signal when the brightness adjustment is completed.

10. The method according to claim 9, characterized in that The pixel circuit includes a plurality of pixel devices; the method further includes: The timing controller collects the driving voltage of each device, generates an adjustment completion signal according to each driving voltage, and transmits the adjustment completion signal to the system-level chip, wherein the adjustment completion signal is used to indicate that the brightness adjustment is completed.

11. The method according to claim 9, characterized in that The method further comprises: By means of the timing controller, when the timing reaches a time threshold, determining that the brightness adjustment is completed; Sending a timing instruction to a timer through the system-on-chip, wherein the system-on-chip includes the timer; The timer executes timing according to the timing instruction, and when the timing reaches the time threshold, transmits a timing completion signal to the system-level chip, wherein the timing completion signal is used to indicate that the brightness adjustment is completed.

12. An electronic device, characterized in that: The electronic device comprises the brightness adjustment circuit as claimed in any one of claims 1 to 8, and the brightness adjustment circuit is used to execute the brightness adjustment method as claimed in any one of claims 9 to 11.

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