Driving control method, driving circuit, display system and display device

Abstract

The invention relates to a driving control method, a driving circuit, a display system and a display device. The method comprises the following steps: acquiring target display data corresponding to a to-be-displayed sub-frame, and a first enabling control signal and a second enabling control signal corresponding to a constant current circuit in the driving circuit under the current display sub-frame; updating the first enabling control signal and the second enabling control signal according to target display data corresponding to the to-be-displayed sub-frame; and adjusting the on-off state of each circuit in the constant current circuit according to the updated first enabling control signal and the second enabling control signal, so that all or part of circuits in the constant current circuit enter or exit a low-power-consumption mode. Fine-grained power consumption management of the driving circuit at a subframe level is realized, the power consumption state of each circuit in the constant current circuit can be flexibly controlled on the premise of not influencing normal display, the energy efficiency utilization rate is effectively improved, and the overall power consumption is reduced.

Description

Technical Field

[0001] The present application relates to the field of display control technology, and in particular to a drive control method, a drive circuit, a display system, and a display device. Background Art

[0002] LED displays, due to their high brightness, wide viewing angle, and rich color expression, have become core display devices in industries such as industry, transportation, commercial advertising, information dissemination, and sporting events. These displays typically use independent controllers to send display data and control signals, while built-in driver circuits are responsible for buffering 1 to 2 frames of data and driving the corresponding LEDs based on this data. However, the driver circuits in related technologies suffer from energy waste in certain circumstances. Specifically, when all or some of the LEDs in a frame are off, the driver circuit no longer provides a constant current output to the LEDs, but remains in standby mode, causing the internal operating modules to continue consuming power and resulting in unnecessary energy loss.

[0003] Currently, no effective solution has been proposed to the energy waste problem of the driving circuit in the related art. Summary of the Invention

[0004] Based on this, it is necessary to provide a driving control method, a driving circuit, a display system and a display device to address the above technical problems.

[0005] In a first aspect, the present application provides a drive control method, the method comprising:

[0006] Acquire target display data corresponding to the subframe to be displayed, and a first enable control signal and a second enable control signal corresponding to the constant current circuit in the driving circuit in the current display subframe;

[0007] updating the first enable control signal and the second enable control signal according to the target display data corresponding to the subframe to be displayed;

[0008] According to the updated first enable control signal and the second enable control signal, the on / off state of each circuit in the constant current circuit is adjusted so that all or part of the circuits in the constant current circuit enter or exit the low power consumption mode.

[0009] In one embodiment, the target display data includes a plurality of sub-display data; the constant current circuit includes a constant current generating circuit and at least one constant current output circuit; and adjusting the on / off state of each circuit in the constant current circuit according to the updated first enable control signal and the second enable control signal includes:

[0010] If some of the sub-display data are zero, turning on the constant current generating circuit according to the updated first enable control signal;

[0011] According to the updated second enable control signal, the constant current output circuit corresponding to the sub-display data of zero is turned off, and the constant current output circuit corresponding to the sub-display data of non-zero is turned on.

[0012] In one embodiment, the target display data includes a plurality of sub-display data; the constant current circuit includes a constant current generating circuit and at least one constant current output circuit; and adjusting the on / off state of each circuit in the constant current circuit according to the updated first enable control signal and the second enable control signal includes:

[0013] If all of the sub-display data are zero, turning off the constant current generating circuit according to the updated first enable control signal, and / or turning off the constant current output circuit corresponding to all of the sub-display data according to the updated second enable control signal corresponding to all of the sub-display data;

[0014] If all the sub-display data are non-zero, the constant current generating circuit is turned on according to the updated first enable control signal, and the constant current output circuits corresponding to all the sub-display data are turned on according to the updated second enable control signal corresponding to all the sub-display data.

[0015] In one embodiment, updating the first enable control signal and the second enable control signal according to the target display data corresponding to the subframe to be displayed includes:

[0016] Determining a preset update time point according to the on-off reaction time of the constant current circuit and the display end time of the current display subframe;

[0017] Alternatively, a preset update time point is determined according to the on-off response time of the constant current circuit and the display start time of the subframe to be displayed;

[0018] The first enable control signal and the second enable control signal are updated at the preset update time point according to the target display data corresponding to the sub-frame to be displayed.

[0019] In one embodiment, the preset update time point includes a preset turn-on time point and a preset turn-off time point; the target display data includes a plurality of sub-display data; and updating the first enable control signal and the second enable control signal at the preset update time point according to the target display data corresponding to the sub-frame to be displayed includes:

[0020] If some of the sub-display data are zero, then at the preset off-time point, the second enable control signal corresponding to the sub-display data that is zero is updated to an invalid state, and at the preset on-time point, the first enable control signal is updated to a valid state, and the second enable control signal corresponding to the remaining non-zero sub-display data is updated to a valid state;

[0021] If all the sub-display data are zero, then at the preset shutdown time point, the first enable control signal is updated to an invalid state, and / or the second enable control signal corresponding to all the sub-display data is updated to an invalid state;

[0022] If all of the sub-display data are non-zero, then at the preset start-up time point, the first enable control signal and the second enable control signals corresponding to all of the sub-display data are updated to a valid state.

[0023] In one embodiment, the on-off reaction time includes an on-reaction time and an off-reaction time; and determining the preset update time point according to the on-off reaction time of the constant current circuit and the display end time of the current display subframe includes:

[0024] Obtaining a turn-on response time and a turn-off response time of the constant current circuit;

[0025] Taking the display end time of the current display subframe as a reference, the turn-on reaction time is shifted forward to obtain a preset turn-on time point;

[0026] The shutdown reaction time is shifted forward based on the display end time of the current display subframe to obtain a preset shutdown time point.

[0027] In one embodiment, the on-off reaction time includes a turn-on reaction time and a turn-off reaction time; and determining the preset update time point according to the on-off reaction time of the constant current circuit and the display start time of the subframe to be displayed includes:

[0028] Obtaining a turn-on response time and a turn-off response time of the constant current circuit;

[0029] Taking the display start time of the subframe to be displayed as a reference, the turn-on reaction time is shifted forward to obtain a preset turn-on time point;

[0030] The display start time of the sub-frame to be displayed is used as a reference, and the shutdown reaction time is moved forward to obtain a preset shutdown time point.

[0031] In a second aspect, the present application further provides a driving circuit, the driving circuit comprising a control circuit and a constant current circuit; the control circuit is connected to the constant current circuit;

[0032] The control circuit is used to execute the drive control method described in any one of the embodiments of the first aspect above.

[0033] In one embodiment, the constant current circuit includes a constant current generating circuit and at least one constant current output circuit; the constant current generating circuit is respectively connected to at least one constant current output circuit;

[0034] The constant current generating circuit is configured to switch an on-off state according to a first enabling control signal transmitted by the control circuit;

[0035] The constant current output circuit is used to switch the on-off state according to the second enable control signal transmitted by the control circuit.

[0036] In one embodiment, the driving circuit further includes a storage circuit; the storage circuit is connected to the control circuit;

[0037] The storage circuit is used to store target display data corresponding to each sub-frame to be displayed.

[0038] In a third aspect, the present application further provides a display system, comprising a main control terminal, an LED, and at least one driving circuit as described in any one of the embodiments of the second aspect above;

[0039] The main control end is in communication connection with the driving circuit; and the LED is connected with the driving circuit.

[0040] In a fourth aspect, the present application further provides a display device comprising a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the method described in any one of the embodiments of the first aspect when executing the computer program.

[0041] In a fifth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method described in any one of the embodiments of the first aspect above.

[0042] In a sixth aspect, the present application further provides a computer program product, comprising a computer program, which, when executed by a processor, implements the steps of the method described in any one of the embodiments of the first aspect above.

[0043] The above-mentioned drive control method, drive circuit, display system and display device obtain the target display data corresponding to the subframe to be displayed, and the first enable control signal and the second enable control signal corresponding to the constant current circuit in the drive circuit under the current display subframe; then, according to the target display data corresponding to the subframe to be displayed, the first enable control signal and the second enable control signal are updated; according to the updated first enable control signal and the second enable control signal, the on-off state of each circuit in the constant current circuit is adjusted so that all or part of the circuits in the constant current circuit enter or exit the low power consumption mode; thus, fine-grained power consumption management of the drive circuit at the subframe level is realized, and the power consumption state of each circuit in the constant current circuit can be flexibly controlled without affecting normal display, thereby effectively improving energy efficiency and reducing overall power consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments of the present application or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying any creative work.

[0045] Figure 1 is an overall structural diagram of a driving circuit in one embodiment;

[0046] Figure 2 1 is a flow chart of a drive control method according to an embodiment;

[0047] Figure 3 1 is a flow chart of the steps of updating the first enable control signal and the second enable control signal in one embodiment;

[0048] Figure 4 is an overall structural diagram of a driving circuit in a specific embodiment;

[0049] Figure 5 FIG. 1 is a diagram showing the internal structure of a display device in one embodiment. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0051] To reduce power consumption, traditional driver circuits enter a low-power mode during display frames in which all corresponding LEDs are off (i.e., the display data in that frame is all zero), thereby saving power. However, this method can only control the driver circuit's energy consumption on a "frame" basis, and low-power mode can only be triggered when all driven LEDs are off. In situations where only some LEDs are off, traditional methods cannot specifically shut down the corresponding modules within the driver circuit, making it difficult to achieve more refined energy-saving control. Based on this, the present application provides a driver control method.

[0052] In one embodiment, Figure 1 As shown, Figure 1 1 is an overall structural diagram of a driving circuit in an embodiment; the driving circuit includes a control circuit and a constant current circuit; wherein the control circuit is connected to the constant current circuit.

[0053] The control circuit may include, but is not limited to, a controller; the controller may be, for example, a microcontroller unit (MCU).

[0054] It should be noted that the control circuit includes multiple enable control terminals; the enable control terminal is used to output an enable control signal corresponding to the display requirements (including at least a first enable control signal and at least one second enable control signal), and transmit the enable control signal to each circuit in the constant current circuit to realize the on-off state control of each circuit in the constant current circuit.

[0055] The constant current circuit includes a constant current generating circuit and at least one constant current output circuit. The constant current generating circuit is configured to switch between on and off states according to a first enable control signal transmitted by the control circuit, and output a corresponding reference constant current to the constant current output circuit when the constant current generating circuit is on.

[0056] It can be understood that the reference constant current is a standard current provided by the constant current generating circuit and is used as a reference for the output current of the constant current output circuit.

[0057] Among them, the constant current output circuit is used to switch the on-off state according to the second enable control signal transmitted by the control circuit; and when the constant current output circuit is turned on, it outputs a corresponding driving constant current to the LED (not shown in the figure) connected to the constant current output circuit.

[0058] It can be understood that the driving constant current refers to the constant current used to supply the LED to ensure the stability of the LED's luminous brightness.

[0059] In one embodiment, Figure 2 As shown, Figure 2FIG. 1 is a flow chart of a drive control method in one embodiment; the drive control method in this embodiment, applied to the above-mentioned drive circuit, includes the following steps:

[0060] Step S201 : acquiring target display data corresponding to a sub-frame to be displayed, and a first enable control signal and a second enable control signal corresponding to a constant current circuit in a driving circuit in a current display sub-frame.

[0061] It should be noted that in the field of display technology, a display frame refers to a complete image display unit. Each display frame can be divided into multiple display sub-frames; each display sub-frame corresponds to a time segment in the image display process. It can also be understood that the display frame is a complete image unit, and the display sub-frame is one of the several segments that make up the display frame. For example, in a display frame with 8 display sub-frames, each display sub-frame may represent a grayscale value of a different weight, which is displayed in sequence and combined into a complete image. By dividing the display frame into multiple display sub-frames, more refined grayscale control can be achieved, laying the foundation for more refined power consumption management.

[0062] The "to-be-displayed subframe" refers to the next display subframe to be processed. The target display data includes multiple sub-display data; each sub-display data is used to control the lighting state and brightness level of a corresponding LED. The "currently displayed subframe" refers to the display subframe currently being processed.

[0063] The first enable control signal is used to control the on / off state of the constant current generating circuit in the constant current circuit, so that the constant current generating circuit enters or exits the low-power mode. The first enable control signal includes an active state and an inactive state. When the first enable control signal is in the active state, the constant current generating circuit is controlled to be in the on state, so that the constant current generating circuit exits the low-power mode (i.e., enters the working state). When the first enable control signal is in the inactive state, the constant current generating circuit is controlled to be in the off state, so that the constant current generating circuit enters the low-power mode.

[0064] It should be noted that the level state of the first enable control signal in the valid state is opposite to the level state corresponding to the first enable control signal in the invalid state. The specific level state needs to be determined according to the control requirements of the constant current generating circuit and is not specifically limited here; for example, if the valid state refers to the first enable control signal being in a low level state, the invalid state refers to the first enable control signal being in a high level state; if the valid state refers to the first enable control signal being in a high level state, the invalid state refers to the first enable control signal being in a low level state.

[0065] The second enable control signal is used to control the on / off state of the corresponding constant current output circuit in the constant current circuit, thereby causing the constant current output circuit to enter or exit a low-power mode. It will be understood that each constant current output circuit has a unique corresponding second enable control signal. The second enable control signal includes an active state and an inactive state. When the second enable control signal is active, the corresponding constant current output circuit is controlled to be in an on state, thereby causing the constant current output circuit to exit a low-power mode (i.e., enter an operating state). When the second enable control signal is in an inactive state, the constant current output circuit is controlled to be in an off state, thereby causing the constant current output circuit to enter a low-power mode.

[0066] It should be noted that the level state of the second enable control signal in the valid state is opposite to the level state corresponding to the second enable control signal in the invalid state. The specific level state needs to be determined according to the control requirements of the constant current output circuit and is not specifically limited here.

[0067] It should be noted that the “low power consumption mode” in this embodiment refers to shutting down the current loop of all or part of the constant current circuit so that the constant current circuit is no longer in a powered operation state without affecting the overall function.

[0068] In an exemplary embodiment, the driving circuit further includes a storage circuit configured to store target display data corresponding to each subframe to be displayed. The target display data corresponding to the subframe to be displayed may be obtained by reading the target display data corresponding to the subframe to be displayed from the storage circuit within a time window corresponding to the currently displayed subframe.

[0069] Step S202 : updating the first enable control signal and the second enable control signal according to the target display data corresponding to the sub-frame to be displayed.

[0070] It can be understood that for each subframe to be displayed, the control circuit needs to obtain and analyze the target display data of the subframe to be displayed in advance within the time window of the current display subframe, and determine the first enable control signal and the second enable control signal required based on this, thereby completing the pre-judgment and update of the first enable control signal and the second enable control signal, and ensuring that the constant current circuit can respond to the display requirements of the subframe to be displayed in a timely manner within the time window of the subframe to be displayed.

[0071] It should be noted that the aforementioned "updating" may include, but is not limited to, maintaining or switching states. The specific updating method is determined based on the target display data corresponding to the subframe to be displayed, and is not specifically limited herein. For example, taking updating the first enable control signal as an example, assuming that the first enable control signal corresponding to the constant current generating circuit is in an active state in the current display subframe, and based on the target display data corresponding to the subframe to be displayed, it is determined that the first enable control signal corresponding to the constant current generating circuit should also be in an active state in the subframe to be displayed, updating the first enable control signal means maintaining the active state of the first enable control signal.

[0072] Assuming that the first enable control signal corresponding to the constant current generating circuit is in a valid state in the current display sub-frame, based on the target display data corresponding to the sub-frame to be displayed, it is determined that the first enable control signal corresponding to the constant current generating circuit should be in an invalid state in the sub-frame to be displayed. At this time, updating the first enable control signal refers to switching the valid state of the first enable control signal to an invalid state.

[0073] Similarly, the method for updating the second enable control signal is similar in principle to the method for updating the first enable control signal, and will not be described in detail herein.

[0074] Step S203 , adjusting the on / off state of each circuit in the constant current circuit according to the updated first enable control signal and the second enable control signal, so that all or part of the circuits in the constant current circuit enter or exit the low power consumption mode.

[0075] It is understandable that multiple sub-display data in the target display data may be all or partially zero. Therefore, based on the target display data, the states of the first enable control signal and the second enable control signal are updated, and according to the updated first enable control signal and the second enable control signal, the constant current generating circuit and the constant current output circuit in the constant current circuit can be dynamically controlled accordingly, thereby realizing on-demand driving and energy-saving management.

[0076] In this embodiment, the target display data corresponding to the sub-frame to be displayed, and the first enable control signal and the second enable control signal corresponding to the constant current circuit in the driving circuit under the current display sub-frame are obtained; and then, the first enable control signal and the second enable control signal are updated according to the target display data corresponding to the sub-frame to be displayed; and the on-off state of each circuit in the constant current circuit is adjusted according to the updated first enable control signal and the second enable control signal, so that all or part of the circuits in the constant current circuit enter or exit the low power consumption mode; fine-grained power consumption management of the driving circuit at the sub-frame level is realized, and the power consumption state of each circuit in the constant current circuit can be flexibly controlled without affecting the normal display, thereby effectively improving energy efficiency and reducing overall power consumption.

[0077] In one embodiment, adjusting the on / off state of each circuit in the constant current circuit according to the updated first enable control signal and the second enable control signal includes the following steps:

[0078] Step 1: If some sub-display data are zero, the constant current generating circuit is turned on according to the updated first enable control signal.

[0079] Step 2: According to the updated second enable control signal, the constant current output circuit corresponding to the sub-display data of zero is turned off, and the constant current output circuit corresponding to the sub-display data of non-zero is turned on.

[0080] Wherein, if the sub-display data is zero, it means that the corresponding LED is not lit in the sub-frame to be displayed, and the grayscale value is 0. If the sub-display data is non-zero, it means that the corresponding LED is lit in the sub-frame to be displayed, and the grayscale value is not 0.

[0081] It should be noted that when a sub-display data in the target display data is zero, it means that the corresponding LED needs to be controlled not to light up, that is, to be in the off state, within the time window corresponding to the sub-frame to be displayed. At this time, if the constant current output circuit corresponding to the sub-display data still remains in a powered operating state, it will cause unnecessary static power consumption, which not only wastes energy, but may also cause the circuit to heat up, bringing potential overheating and damage risks to the LED.

[0082] Based on this, to avoid the above-mentioned problem, in this embodiment, when the control circuit identifies that some sub-display data in the target display data is zero, it is necessary to update the first enable control signal to a valid state at a preset update time point, update the second enable control signal corresponding to the sub-display data that is zero to an invalid state, and update the second enable control signal corresponding to the remaining non-zero sub-display data to a valid state; then, according to the updated first enable control signal, turn on the constant current generating circuit to ensure that the constant current generating circuit continues to provide the corresponding reference constant current to the constant current output circuit corresponding to the remaining non-zero sub-display data in the target display data; according to the updated second enable control signal corresponding to each sub-display data, turn off the constant current output circuit corresponding to the sub-display data that is zero, and turn on the constant current output circuit corresponding to the non-zero sub-display data, thereby avoiding unnecessary static power consumption.

[0083] The preset update time point is within the time window of the current display subframe. It should be noted that the preset update time point is related to the response delay characteristics of the constant current circuit and is not specifically limited here.

[0084] In this embodiment, when some sub-display data is zero and the remaining sub-display data is non-zero, the control circuit turns on the constant current generating circuit according to the updated first enable control signal to generate a reference constant current for the LEDs that need to be illuminated. Simultaneously, according to the updated second enable control signal, the constant current output circuit corresponding to the zero sub-display data is turned off to prevent energy waste caused by ineffective current flow, while the constant current output circuit corresponding to the non-zero sub-display data is turned on to ensure normal illumination of the corresponding LEDs. This control method ensures that only the circuits that actually need to operate are powered, while ensuring the display effect. This achieves local energy-saving control of the driver circuit, improves the overall energy efficiency of the driver circuit, reduces unnecessary heat generation, and extends the service life of the driver circuit and LEDs.

[0085] In one embodiment, adjusting the on / off state of each circuit in the constant current circuit according to the updated first enable control signal and the second enable control signal includes the following steps:

[0086] Step 1: If all sub-display data are zero, the constant current generating circuit is turned off according to the updated first enable control signal, and / or the constant current output circuit corresponding to all sub-display data is turned off according to the updated second enable control signal corresponding to all sub-display data.

[0087] It should be noted that when all sub-display data in the target display data is zero, it means that all LEDs need to be controlled not to light up, that is, in the off state, within the time window corresponding to the sub-frame to be displayed. At this time, if the constant current generating circuit and / or all constant current output circuits still remain in a powered operating state, it will cause a large amount of unnecessary static power consumption, and there will be serious problems of overheating and energy waste.

[0088] Based on this, in order to avoid the above problems, in this embodiment, when the control circuit recognizes that all sub-display data in the target display data are zero, it is necessary to update the first enable control signal to an invalid state at a preset update time point, and / or update the second enable control signal corresponding to all sub-display data to an invalid state; then, according to the updated first enable control signal, turn off the constant current generating circuit to ensure that the constant current generating circuit stops outputting the reference constant current; according to the updated second enable control signal corresponding to each sub-display data, turn off the constant current output circuit corresponding to all sub-display data to avoid unnecessary static power consumption.

[0089] Step 2: If all sub-display data are non-zero, the constant current generating circuit is turned on according to the updated first enable control signal, and the constant current output circuit corresponding to all sub-display data is turned on according to the updated second enable control signal corresponding to all sub-display data.

[0090] It should be noted that when all sub-display data in the target display data are non-zero, it means that all LEDs need to be controlled to light up within the time window corresponding to the sub-frame to be displayed. At this time, it is necessary to ensure that the constant current generating circuit and each constant current output circuit work normally.

[0091] Specifically, when the control circuit recognizes that all sub-display data in the target display data are non-zero, it is necessary to update the first enable control signal and the second enable control signal corresponding to all sub-display data to a valid state at a preset update time point; then, according to the updated first enable control signal, the constant current generating circuit is turned on to ensure that the constant current generating circuit generates a corresponding reference constant current; according to the updated second enable control signal corresponding to each sub-display data, the constant current output circuit corresponding to all sub-display data is turned on to ensure that each constant current output circuit can provide a stable driving constant current for the corresponding LED.

[0092] In this embodiment, according to the content of each sub-display data in the target display data, the on-off state of the constant current generating circuit and each constant current output circuit in the constant current circuit can be flexibly adjusted. Under the premise of ensuring the display quality, the energy consumption of the driving circuit is managed in a refined manner, thereby improving the energy-saving performance, thermal stability and operational reliability of the driving circuit.

[0093] In one embodiment, updating the first enable control signal and the second enable control signal according to target display data corresponding to the subframe to be displayed includes:

[0094] Step 1: Determine the preset update time point based on the on-off response time of the constant current circuit and the display end time of the current display subframe; or determine the preset update time point based on the on-off response time of the constant current circuit and the display start time of the subframe to be displayed.

[0095] The on-off response time of a constant current circuit includes both turn-on response time and turn-off response time. Turn-on response time refers to the time it takes for the constant current circuit to actually turn on and output a stable reference constant current. Turn-off response time refers to the time it takes for the constant current circuit to completely stop outputting the reference constant current and enter the cut-off state.

[0096] It should be noted that the on-off response time of the constant current circuit needs to be determined according to the actual constant current generating circuit and the performance of each constant current output circuit, and is not specifically limited here.

[0097] The preset update time points include preset turn-on time points and preset turn-off time points. The preset turn-on time points refer to signal update moments reserved for each circuit that needs to be turned on in the subframe to be displayed within the time window of the current display subframe. The preset turn-off time points refer to signal update moments reserved for each circuit that needs to be turned off in the subframe to be displayed within the time window of the current display subframe.

[0098] In an exemplary embodiment, a method for determining a preset update time point based on the on-off response time of the constant current circuit and the display end time of the current display subframe may include: obtaining the on-response time and off-response time of the constant current circuit; shifting the on-response time forward based on the display end time of the current display subframe to obtain a preset on-response time point; and shifting the off-response time forward based on the display end time of the current display subframe to obtain a preset off-response time point. For example, assuming the display end time of the current display subframe is T1, the on-response time of the constant current circuit is t1, and the off-response time is t2, then the preset on-response time point is T1-t1, and the preset off-response time point is T1-t2.

[0099] In another exemplary embodiment, a method for determining a preset update time point based on the on-off response time of the constant current circuit and the display start time of the subframe to be displayed may include: obtaining the on-response time and off-response time of the constant current circuit; shifting the on-response time forward based on the display start time of the subframe to be displayed to obtain the preset on-response time point; and shifting the off-response time forward based on the display start time of the subframe to be displayed to obtain the preset off-response time point. For example, assuming the display start time of the subframe to be displayed is T2, the on-response time of the constant current circuit is t1, and the off-response time is t2, then the preset on-response time point is T2-t1, and the preset off-response time point is T2-t2.

[0100] Step 2: updating the first enable control signal and the second enable control signal at a preset update time point according to the target display data corresponding to the sub-frame to be displayed.

[0101] It is understandable that, considering the turn-on response time and turn-off response time of the constant current circuit, the control circuit will perform the update operation in advance within a reasonable time before the end of the current display subframe. This can ensure that when the subframe to be displayed begins, the constant current circuit has completed the necessary on-off conversion, thereby avoiding driving abnormalities or energy waste due to signal delays.

[0102] In this embodiment, the response delay characteristics of the constant current circuit during the on-off switching process are fully considered, and a preset update time point is set based on this response performance. The control circuit updates the first enable control signal and the second enable control signal at this preset update time point within the time window of the current display subframe. In this way, it is possible to ensure that the constant current circuit has stably switched to the corresponding operating state when entering the subframe to be displayed, effectively avoiding problems such as drive delays, false lighting, or inefficient power consumption caused by delayed enable control signal updates, and effectively improving the timing control accuracy and display stability of the drive circuit.

[0103] In one embodiment, Figure 3 As shown, Figure 3 1 is a flow chart of the steps of updating the first enable control signal and the second enable control signal in one embodiment; updating the first enable control signal and the second enable control signal at a preset update time point according to target display data corresponding to a subframe to be displayed includes the following steps:

[0104] In step S301, if some sub-display data are zero, the second enable control signal corresponding to the zero sub-display data is updated to an invalid state at a preset turn-off time point, and the first enable control signal is updated to a valid state at a preset turn-on time point, and the second enable control signal corresponding to the remaining non-zero sub-display data is updated to a valid state.

[0105] Step S302 : If all sub-display data are zero, then at a preset shutdown time point, the first enable control signal is updated to an invalid state, and / or the second enable control signal corresponding to all sub-display data is updated to an invalid state.

[0106] Step S303 : If all sub-display data are non-zero, then at a preset start-up time point, the first enable control signal and the second enable control signal corresponding to all sub-display data are updated to a valid state.

[0107] The preset turn-on time point refers to the signal update moment reserved for each circuit that needs to be turned on in the subframe to be displayed within the time window of the current display subframe. The preset turn-off time point refers to the signal update moment reserved for each circuit that needs to be turned off in the subframe to be displayed within the time window of the current display subframe.

[0108] For example, Figure 4 Taking the driving circuit in as an example, the driving circuit includes a control circuit, a constant current generating circuit and n constant current output circuits. The first enable control signal is recorded as EN0, and the n second enable control signals corresponding to the n constant current output circuits are recorded as EN1-ENn respectively.

[0109] Assume that within the time window of the subframe to be displayed, it is necessary to control the LED 1 (not shown in the figure) corresponding to the output port OUT1 of the constant current output circuit 1 and the output port OUT2 of the constant current output circuit 2. 2 does not light up, and the LEDs corresponding to the other constant current output circuits (constant current output circuit 3 to constant current output circuit n) are all lit. At this time, it is necessary to update the second enable control signal EN1 and the second enable control signal EN2 to an invalid state at a preset turn-off time point to ensure that the constant current output circuit 1 and the constant current output circuit 2 are turned off within the time window of the sub-frame to be displayed. At the same time, at a preset turn-on time point, the first enable control signal EN0 is updated to a valid state to ensure that the constant current generating circuit is turned on within the time window of the sub-frame to be displayed, so as to provide a corresponding reference constant current for the constant current output circuit 3 to the constant current output circuit n; and at the preset turn-on time point, the remaining second enable control signals EN3 to the second enable control signal ENn are updated to a valid state to ensure that the constant current output circuit 3 to the constant current output circuit n are turned on within the time window of the sub-frame to be displayed, so that the constant current output circuit 3 to the constant current output circuit n provide corresponding driving constant currents to LED3 to LEDn (not shown in the figure) respectively according to the reference constant current.

[0110] Assuming that all LEDs need to be controlled not to light up within the time window of the subframe to be displayed, at this time, it is necessary to update the first enable control signal EN0 to an invalid state at a preset shutdown time point to ensure that the constant current generating circuit is turned off within the time window of the subframe to be displayed, and / or, update the second enable control signal EN1-the second enable control signal ENn to an invalid state to ensure that the constant current output circuit 1-the constant current output circuit n is turned off within the time window of the subframe to be displayed to avoid unnecessary static power consumption.

[0111] Assuming that all LEDs need to be controlled to light up within the time window of the subframe to be displayed, at this time, it is necessary to update the first enable control signal EN0 to a valid state at the preset shutdown time point to ensure that the constant current generating circuit is turned on within the time window of the subframe to be displayed, and update the second enable control signal EN1-the second enable control signal ENn to a valid state to ensure that the constant current output circuit 1-the constant current output circuit n is turned on within the time window of the subframe to be displayed, so as to ensure that the constant current generating circuit and then each constant current output circuit can work normally.

[0112] In this embodiment, the first enable control signal and the second enable control signal are updated based on the preset turn-off time point and the preset turn-on time point within the time window of the current display subframe, which can ensure that when entering the subframe to be displayed, the constant current circuit has stably switched to the corresponding working state, effectively avoiding the driving delay, false lighting or invalid power consumption caused by the delay in updating the enable control signal, and effectively improving the timing control accuracy and display stability of the driving circuit.

[0113] In one embodiment, see Figure 1 , the driving circuit includes a control circuit and a constant current circuit; the control circuit is connected to the constant current circuit;

[0114] A control circuit is used to execute the drive control method described in any one of the above embodiments.

[0115] Preferably, the constant current circuit includes a constant current generating circuit and at least one constant current output circuit; the constant current generating circuit is respectively connected to the at least one constant current output circuit;

[0116] a constant current generating circuit, configured to switch an on-off state according to a first enabling control signal transmitted by the control circuit;

[0117] The constant current output circuit is used to switch the on-off state according to the second enabling control signal transmitted by the control circuit.

[0118] It should be noted that the specific implementation of the on-off state switching of the constant current generating circuit and the constant current output circuit has been described in detail in the above embodiments and will not be repeated here.

[0119] Preferably, the driving circuit further includes a storage circuit (not shown in the figure); the storage circuit is connected to the control circuit; the storage circuit is used to store target display data corresponding to each sub-frame to be displayed.

[0120] In this embodiment, the driving circuit realizes fine-grained power consumption management of the driving circuit at the sub-frame level through the coordinated work of the control circuit and the constant current circuit. It can flexibly control the power consumption state of each circuit in the constant current circuit without affecting normal display, effectively improving energy efficiency and reducing overall power consumption.

[0121] In a specific embodiment, the constant current generating circuit includes a reference current generating circuit and a current mirror circuit; the reference current generating circuit is connected to the current mirror circuit; wherein the reference current generating circuit is used to generate an initial reference current based on a reference voltage; and the current mirror circuit is used to convert the initial reference current into a reference constant current.

[0122] It should be noted that the reference current generating circuit and the current mirror circuit may adopt circuits in the prior art and are not specifically limited here.

[0123] In a specific embodiment, the reference current generating circuit and the current mirror circuit both have corresponding enable control terminals. The first enable control signal may include a first enable signal and a second enable signal.

[0124] Among them, the enable control terminal of the reference current generating circuit is used to receive the first enable signal output by the control circuit, switch the on-off state according to the first enable signal, and generate an initial reference current when the reference current generating circuit is turned on.

[0125] Among them, the enable control terminal of the current mirror circuit is used to receive the second enable signal output by the control circuit, switch the on-off state according to the second enable signal, and convert the initial reference current into a reference constant current when the current mirror circuit is turned on.

[0126] It should be noted that since there are certain differences in the response delay characteristics corresponding to the reference current generating circuit and the current mirror circuit, it is necessary to separately determine the preset update time points (including the preset turn-on time point and the preset turn-off time point) corresponding to the reference current generating circuit and the current mirror circuit.

[0127] For example, if the turn-on response time of the reference current generating circuit is T11 and the turn-off response time is T12, the turn-on response time of the current mirror circuit is T21 and the turn-off response time is T22; for the turn-on response time, T11>T21 is usually present, and for the circuit turn-off response time, T12≈T22 is usually present.

[0128] Furthermore, assuming that the display end time of the current display subframe is T1, the preset turn-on time point corresponding to the reference current generating circuit can be determined to be T1-T11, and the preset turn-off time point is T1-T12; the preset turn-on time point corresponding to the current mirror circuit is T1-T21, and the preset turn-off time point is T1-T22.

[0129] Furthermore, based on the preset update time point of the reference current generating circuit, the state of the first enable signal is updated, and based on the preset update time point corresponding to the current mirror circuit, the state of the second enable signal is updated, ensuring that when entering the sub-frame to be displayed, the constant current generating circuit (the reference current generating circuit and the current mirror circuit) has stably switched to the corresponding working state.

[0130] In one embodiment, a display system is provided, comprising a main control terminal, an LED, and at least one driving circuit described in any one of the above embodiments;

[0131] The main control end is connected to the driving circuit for communication; the LED is connected to the driving circuit.

[0132] The main control terminal is used to transmit corresponding display data and control signals to the driving circuit according to display requirements, so that the driving circuit can drive and control the LED. The main control terminal can be, but is not limited to, an MCU and is not specifically limited here.

[0133] It can be understood that the LED is controlled by the driving circuit, and the driving circuit is controlled by the main control end.

[0134] In this embodiment, the display system implements fine-grained power consumption management at the sub-frame level, and can flexibly control the power consumption state of each circuit in the driving circuit without affecting normal display, effectively improving the energy efficiency utilization of the display system and reducing overall power consumption.

[0135] It should be understood that, although the various steps in the flowcharts involved in the various embodiments described above are displayed in sequence according to the instructions of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowcharts involved in the various embodiments described above can include multiple steps or multiple stages, and these steps or stages are not necessarily executed and completed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of steps or stages in other steps.

[0136] In an exemplary embodiment, a display device is provided. The display device may be a server, and its internal structure diagram may be as shown in FIG. Figure 5 As shown. The display device includes a processor, a memory, an input / output interface (Input / Output, abbreviated as I / O) and a communication interface. The processor, memory and input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. The processor of the display device is used to provide computing and control capabilities. The memory of the display device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and computer program in the non-volatile storage medium. The database of the display device is used to store drive control related data. The input / output interface of the display device is used to exchange information between the processor and an external device. The communication interface of the display device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a drive control method is implemented.

[0137] Those skilled in the art will understand that Figure 5 The structure shown in the figure is only a block diagram of a part of the structure related to the scheme of the present application, and does not constitute a limitation on the display device to which the scheme of the present application is applied. The specific display device may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0138] In one embodiment, a display device is further provided, including a memory and a processor. The memory stores a computer program, and the processor implements the steps in the above method embodiments when executing the computer program.

[0139] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.

[0140] In one embodiment, a computer program product is provided, including a computer program, which implements the steps in the above method embodiments when executed by a processor.

[0141] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0142] Those skilled in the art will understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. In particular, any reference to memory, database, or other media used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The databases involved in the various embodiments provided herein may include at least one of a relational database and a non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the various embodiments provided herein may be, but are not limited to, general-purpose processors, central processing units (CPUs), graphics processing units (GPUs), digital signal processors (DSPs), programmable logic devices (PLDs), quantum computing-based data processing logic devices, artificial intelligence (AI) processors, and the like.

[0143] The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0144] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A drive control method, characterized in that: The method comprises: Acquire target display data corresponding to the subframe to be displayed, and a first enable control signal and a second enable control signal corresponding to the constant current circuit in the driving circuit in the current display subframe; updating the first enable control signal and the second enable control signal according to the target display data corresponding to the subframe to be displayed; According to the updated first enable control signal and the second enable control signal, the on / off state of each circuit in the constant current circuit is adjusted so that all or part of the circuits in the constant current circuit enter or exit the low power consumption mode.

2. The method according to claim 1, characterized in that The target display data includes a plurality of sub-display data; the constant current circuit includes a constant current generating circuit and at least one constant current output circuit; and adjusting the on / off state of each circuit in the constant current circuit according to the updated first enable control signal and the second enable control signal includes: If some of the sub-display data are zero, turning on the constant current generating circuit according to the updated first enable control signal; According to the updated second enable control signal, the constant current output circuit corresponding to the sub-display data of zero is turned off, and the constant current output circuit corresponding to the sub-display data of non-zero is turned on.

3. The method according to claim 1, characterized in that The target display data includes a plurality of sub-display data; the constant current circuit includes a constant current generating circuit and at least one constant current output circuit; and adjusting the on / off state of each circuit in the constant current circuit according to the updated first enable control signal and the second enable control signal includes: If all of the sub-display data are zero, turning off the constant current generating circuit according to the updated first enable control signal, and / or turning off the constant current output circuit corresponding to all of the sub-display data according to the updated second enable control signal corresponding to all of the sub-display data; If all the sub-display data are non-zero, the constant current generating circuit is turned on according to the updated first enable control signal, and the constant current output circuits corresponding to all the sub-display data are turned on according to the updated second enable control signal corresponding to all the sub-display data.

4. The method according to claim 1, wherein The updating of the first enable control signal and the second enable control signal according to the target display data corresponding to the subframe to be displayed includes: Determining a preset update time point according to the on-off reaction time of the constant current circuit and the display end time of the current display subframe; Alternatively, a preset update time point is determined according to the on-off response time of the constant current circuit and the display start time of the subframe to be displayed; The first enable control signal and the second enable control signal are updated at the preset update time point according to the target display data corresponding to the sub-frame to be displayed.

5. The method according to claim 4, characterized in that The preset update time point includes a preset turn-on time point and a preset turn-off time point; the target display data includes a plurality of sub-display data; and updating the first enable control signal and the second enable control signal at the preset update time point according to the target display data corresponding to the sub-frame to be displayed includes: If some of the sub-display data are zero, then at the preset off-time point, the second enable control signal corresponding to the sub-display data that is zero is updated to an invalid state, and at the preset on-time point, the first enable control signal is updated to a valid state, and the second enable control signal corresponding to the remaining non-zero sub-display data is updated to a valid state; If all the sub-display data are zero, then at the preset shutdown time point, the first enable control signal is updated to an invalid state, and / or the second enable control signal corresponding to all the sub-display data is updated to an invalid state; If all of the sub-display data are non-zero, then at the preset start-up time point, the first enable control signal and the second enable control signals corresponding to all of the sub-display data are updated to a valid state.

6. The method according to claim 4 or claim 5, characterized in that The on-off reaction time includes an on-reaction time and an off-reaction time; and determining a preset update time point according to the on-off reaction time of the constant current circuit and the display end time of the current display subframe includes: Obtaining a turn-on response time and a turn-off response time of the constant current circuit; Taking the display end time of the current display subframe as a reference, the turn-on reaction time is shifted forward to obtain a preset turn-on time point; The shutdown reaction time is shifted forward based on the display end time of the current display subframe to obtain a preset shutdown time point.

7. The method according to claim 4 or claim 5, characterized in that The on-off reaction time includes an on-reaction time and an off-reaction time; and determining a preset update time point according to the on-off reaction time of the constant current circuit and the display start time of the subframe to be displayed includes: Obtaining a turn-on response time and a turn-off response time of the constant current circuit; Taking the display start time of the subframe to be displayed as a reference, the turn-on reaction time is shifted forward to obtain a preset turn-on time point; The display start time of the sub-frame to be displayed is used as a reference, and the shutdown reaction time is moved forward to obtain a preset shutdown time point.

8. A driving circuit, characterized in that: The driving circuit includes a control circuit and a constant current circuit; the control circuit is connected to the constant current circuit; The control circuit is used to execute the drive control method according to any one of claims 1 to 7.

9. The driving circuit according to claim 8, wherein: The constant current circuit includes a constant current generating circuit and at least one constant current output circuit; the constant current generating circuit is respectively connected to at least one constant current output circuit; The constant current generating circuit is configured to switch an on-off state according to a first enabling control signal transmitted by the control circuit; The constant current output circuit is used to switch the on-off state according to the second enable control signal transmitted by the control circuit.

10. The driving circuit according to claim 8, wherein: The driving circuit further includes a storage circuit; the storage circuit is connected to the control circuit; The storage circuit is used to store target display data corresponding to each sub-frame to be displayed.

11. A display system, characterized in that: The display system comprises a main control terminal, an LED, and at least one driving circuit according to any one of claims 8 to 10; The main control end is in communication connection with the driving circuit; the LED is connected with the driving circuit.

12. A display device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

13. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

14. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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