Driving signal adjusting method and device, equipment and storage medium

Abstract

The invention provides a driving signal adjustment method and device, equipment and a storage medium, and relates to the technical field of LED driving. In the driving signal adjusting device, the acquisition end of a signal acquisition circuit is connected with a target driving object for outputting a driving signal, and the output end of the signal acquisition circuit is connected with the input end of a compensation signal generating circuit; the signal acquisition circuit acquires a power supply signal of a target driving object and transmits the power supply signal to the compensation signal generation circuit; the compensation signal generation circuit obtains the power supply signal and generates a compensation signal for adjusting the first signal according to the change of the power supply signal. According to the embodiment of the invention, the driving signal of the driving object can be adjusted according to the power supply change of the driving object, the influence of power supply difference is eliminated, and the display effect of an LED is improved.

Description

Technical Field

[0001] The present application relates to the field of LED driving technology, and more specifically, to a driving signal adjustment method, device, equipment and storage medium. Background Art

[0002] As a new generation of light source, LED has the advantages of environmental protection and energy saving, and is widely used in the fields of lighting, landscaping and decoration. In actual use, the complex environment of lighting, decoration or landscaping, as well as the improvement of human eye's awareness of green health, have new requirements for LED light sources, especially the control of brightness generated by LED light sources. The human eye visual system is not equally sensitive to all brightness areas. In areas with higher brightness, the human eye visual system will be saturated after being stimulated by light, that is, a brightness saturation area is formed in this brightness area. The sensitivity of the human eye to the brightness level and the recognition rate of grayscale in the brightness saturation area will be greatly reduced, and even produce disgust, which will cause light pollution and consume extra energy. Therefore, it is necessary to control the LED light source.

[0003] In order to effectively control the display effect of the LED light source, the driving object connected to the LED light source adopts PWM (Pulsewidth Modulation) to adjust the brightness of the LED light source to obtain a higher grayscale display effect and keep the brightness of each LED light source consistent. However, in actual use, due to the influence of line damage, power supply differences, equipment aging, etc., the power supply of the driving object will be different from the expectation, which will cause the driving signal used to drive the LED light source to emit light to deviate, affecting the display effect of the LED light source. Summary of the invention

[0004] The embodiments of the present application provide a driving signal adjustment method, device, equipment and storage medium, which can solve the problem that the driving signal is deviated due to the existing power supply difference. To achieve this purpose, the embodiments of the present application provide the following solutions.

[0005] According to one aspect of an embodiment of the present application, a driving signal adjustment device is provided, comprising: a signal acquisition circuit and a compensation signal generation circuit respectively connected to a target driving object, wherein an acquisition end of the signal acquisition circuit is connected to the target driving object outputting the driving signal, and an output end of the signal acquisition circuit is connected to an input end of the compensation signal generation circuit;

[0006] The signal acquisition circuit is used to acquire a power supply signal of the target drive object and transmit the power supply signal to the compensation signal generation circuit, wherein the power supply signal includes at least one of a voltage signal and a current signal;

[0007] The compensation signal generating circuit is used to obtain the power supply signal, and generate a compensation signal for adjusting a first signal according to a change of the power supply signal. The first signal is related to the drive signal and includes at least one of a reference current signal and a pulse width modulation signal.

[0008] In a possible implementation, the compensation signal generating circuit includes a first signal conversion module and a first compensation signal generating module, wherein the first signal conversion module is connected to the signal acquisition circuit and converts the power supply signal output by the signal acquisition circuit from an analog signal to a digital signal;

[0009] The first compensation signal generating module receives the converted power supply signal, and generates a compensation signal for adjusting a reference current according to a deviation between the power supply signal and a preset signal.

[0010] In one possible implementation, the compensation signal generating circuit also includes a second signal conversion module, the input end of the second signal conversion module is connected to the signal acquisition circuit, and the output end is connected to the intermediate compensation circuit in the target drive object for processing the pulse width modulation signal, so as to convert the power supply signal into a compensation signal for adjusting the pulse width modulation signal.

[0011] According to one aspect of the present application, a driving signal adjustment method is provided, which is used in the driving signal adjustment device as described above, comprising:

[0012] Collecting a power supply signal of a target driving object, wherein the power supply signal includes at least one of a voltage signal and a current signal;

[0013] A compensation signal for adjusting a first signal is generated according to a change of the power supply signal, wherein the first signal is related to the drive signal and includes at least one of a reference current signal and a pulse width modulation signal.

[0014] In a possible implementation, collecting the power supply signal of the target driving object includes:

[0015] The target drive object is connected to an internal circuit to obtain an actual supply voltage inside the target drive object.

[0016] In a possible implementation, generating a compensation signal for adjusting the electrical signal according to a change of the power supply signal includes:

[0017] Acquire a first voltage signal value corresponding to the actual power supply voltage and a second voltage signal difference of a drive object related to the target drive object, and determine a deviation between the first voltage signal value and the second voltage signal value;

[0018] If the deviation exceeds a preset range, a compensation signal for adjusting a reference current is generated according to the deviation.

[0019] In a possible implementation, generating a compensation signal for adjusting a reference current according to the deviation includes:

[0020] Current gain information corresponding to the deviation is obtained, and a current gain level corresponding to the reference current is adjusted based on the current gain information.

[0021] In a possible implementation, the first signal includes a pulse width modulation signal, and generating a compensation signal for adjusting the electrical signal according to a change of the power supply signal includes:

[0022] The actual supply voltage is converted into a voltage signal or a current signal for adjusting the pulse width modulation signal, so as to adjust the pulse width or timing of the pulse width modulation signal through the voltage signal or the current signal.

[0023] According to one aspect of an embodiment of the present application, a display driving device is provided, which includes a driving object and a driving signal adjustment device as described above, wherein the driving object is connected to an LED, and the driving signal adjustment device is connected to the driving object, and the driving object outputs a driving signal for driving the LED to emit light according to a compensation signal output by the driving signal adjustment device.

[0024] According to one aspect of the present application, 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 of the method described above are implemented.

[0025] According to one aspect of the present application, an electronic device is provided, including a memory, a processor, and a computer program stored in the memory, wherein the processor executes the computer program to implement the steps of the method described above.

[0026] The beneficial effects of the technical solution provided by the embodiment of the present application are:

[0027] On the one hand, the present application provides a driving signal adjustment device, specifically, the device includes a signal acquisition circuit and a compensation signal generating circuit respectively connected to a target driving object, the acquisition end of the signal acquisition circuit is connected to the target driving object outputting the driving signal, and the output end of the signal acquisition circuit is connected to the input end of the compensation signal generating circuit, the signal acquisition circuit is used to acquire the power supply signal of the target driving object, and transmit the power supply signal to the compensation signal generating circuit, the compensation signal generating circuit generates a compensation signal for adjusting a first signal related to the driving signal according to the change of the power supply signal. The embodiment of the present application acquires the power supply signal of the target driving object through the signal acquisition circuit, transmits the power supply signal to the compensation signal generating circuit, the compensation signal generating circuit generates a compensation signal for adjusting the first signal according to the change of the power supply signal, and adjusts the driving signal according to the change of the first signal. The embodiment of the present application can adjust the driving signal of the driving object according to the change of the power supply of the driving object, eliminate the influence of the power supply difference, and thus improve the display effect of the LED.

[0028] On the other hand, the present application provides a driving signal adjustment method, specifically, collecting the power supply signal of the target driving object, and generating a compensation signal for adjusting the first signal related to the driving signal according to the change of the power supply signal. The embodiment of the present application collects the power supply signal of the target driving object, and adjusts the first signal related to the driving signal according to the change of the power supply signal, so as to adjust the driving signal accordingly according to the power supply change of the target object, eliminate the influence of the power supply difference on the luminous effect, and thus ensure the consistency of the driving signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in describing the embodiments of the present application.

[0030] Figure 1 A structural diagram of a drive signal adjustment device provided in an embodiment of the present application;

[0031] Figure 2 A circuit diagram of a driving object provided in an embodiment of the present application;

[0032] Figure 3 A waveform diagram of a PWM signal corresponding to a driving object provided in an embodiment of the present application;

[0033] Figure 4 A logic block diagram of the drive signal compensation provided in the embodiment of the present application;

[0034] Figure 5 A schematic diagram of signal transmission of a drive signal adjustment device provided in an embodiment of the present application;

[0035] Figure 6A partial circuit diagram of a second signal conversion module in a drive signal adjustment device provided in an embodiment of the present application;

[0036] Figure 7 A flow chart of a driving signal adjustment method provided in an embodiment of the present application;

[0037] Figure 8 A structural diagram of a display driver device provided in an embodiment of the present application;

[0038] Fig. 9 A structural diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0039] The embodiments of the present application are described below in conjunction with the drawings in the present application. It should be understood that the implementation methods described below in conjunction with the drawings are exemplary descriptions for explaining the technical solutions of the embodiments of the present application and do not constitute a limitation on the technical solutions of the embodiments of the present application.

[0040] It will be understood by those skilled in the art that, unless specifically stated, the singular forms "one", "said", and "the" used herein may also include plural forms. It should be further understood that the terms "including" and "comprising" used in the embodiments of the present application refer to that the corresponding features can be implemented as the presented features, information, data, steps, operations, elements and / or components, but do not exclude the implementation as other features, information, data, steps, operations, elements, components and / or combinations thereof supported by the technical field. It should be understood that when we say that an element is "connected" or "coupled" to another element, the one element may be directly connected or coupled to the other element, or it may refer to that the one element and the other element establish a connection relationship through an intermediate element. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The term "and / or" used herein indicates at least one of the items defined by the term, for example, "A and / or B" indicates that it is implemented as "A", or is implemented as "A", or is implemented as "A and B".

[0041] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0042] The following describes several exemplary embodiments to illustrate the technical solutions of the embodiments of the present invention and the technical effects produced by the technical solutions of the present invention. It should be noted that the following embodiments can refer to, draw on or combine with each other, and the same terms, similar features and similar implementation steps in different embodiments will not be described repeatedly.

[0043] The drive signal adjustment method, device, equipment and storage medium provided in the present application are intended to solve at least one technical problem existing in the prior art.

[0044] In an embodiment of the present application, a driving signal adjustment device is provided, such as Figure 1-Figure 6 As shown, the drive signal adjustment device can be connected to the target drive object, or can be set in the target drive object and connected to a module in the target drive object for outputting a drive signal, and a compensation signal is input to the module to adjust the drive signal output by the module.

[0045] Optionally, the target driven object is connected to an LED, and the LED emits light according to a driving signal output by the target driven object.

[0046] In one embodiment, Figure 2 As shown, the module for outputting the driving signal in the driving object is an OUT module, and the OUT module can be a constant current driving circuit. The constant current driving circuit includes an operational amplifier AMP0, a field effect transistor M1, a field effect transistor M2, and a field effect transistor M3. And the LED driven by the constant current driving object can be LED1, the anode of LED1 can be connected to the drain of the field effect transistor M3, the cathode is connected to the drain of the field effect transistor M2, the source of the field effect transistor M3 is connected to the power supply voltage VDD, the gate of the field effect transistor M3 receives the control signal EN-LOW that controls the operation of the constant current driving circuit, and the source of the field effect transistor M2 is connected to the inverting input terminal of the operational amplifier AMP0. The source of the field effect transistor M2 is connected to the mirror current source iRef. The gate of the field effect transistor M1 is connected to the pulse width modulation signal PWM-EN. The source of the field effect transistor M1 is grounded, and the drain is connected to the gate of the field effect transistor M2 and the output terminal of the operational amplifier AMP0. The non-inverting input terminal of the operational amplifier is connected to the reference voltage VDS. The drain of the field effect transistor M2 is the OUT port. The pulse width modulation signal PWM-EN received by the field effect transistor M1 is used to adjust the light emitted by the multi-LED1.

[0047] Figure 2 The waveform of the PWM signal received by the constant current drive circuit is as follows: Figure 3 As shown, VF is the voltage across the LED after the LED is working; VOUT is the voltage at the OUT port after the constant current drive circuit drives the LED to work (i.e., the field effect transistor M2 is turned on and the LED emits light) (VOUT=VDD-VF); ΔV: the voltage drop at the OUT port before and after the constant current drive circuit drives the LED to work (△V=V1-VOUT); V1 is the voltage at the OUT port before the constant current drive circuit drives the LED to work.

[0048] Optionally, V1=n*VDD, where n represents the correlation between V1 and VDD. The relationship between V1 and VDD in the constant current drive circuit is determined by the circuit structure. If it is a resistor string voltage division relationship, it can be expressed as V1=n*VDD. R1, R2 represent resistance).

[0049] Optionally, if the power supply difference is a power supply voltage difference, the principle of causing the power supply voltage is as follows:

[0050] The actual voltage drop △V of the OUT port is inversely proportional to VDD. The lower the supply voltage VDD, the greater the voltage drop △V of the OUT port. The voltage drop △V of the OUT port is achieved by the constant current drive circuit charging and discharging the port parasitic capacitance to complete the port opening action. Therefore, according to U*C=I*t (U: capacitor charging and discharging point, voltage drop across the two ends; C: capacitor value; I: current size of capacitor charging and discharging; t: time required for capacitor charging and discharging to reach stability), the dynamic response time of the OUT port opening (the field effect transistor and the mirror current source IREF are turned on, and there will be a pull-down action on the OUT port, corresponding to Figure 3 The process of ΔV before turning on and in the middle of the PWM period) is t f Indicates dynamic response time;

[0051] The influence of VDD change on the dynamic response time of turn-on is: VF, C, and I are constants determined by the application solution and the function settings of the driver object. The final impact is that the lower the supply voltage VDD, the longer the dynamic response time of the OUT port.

[0052] Because the actual lighting time of the LED of the OUT port is t_open = t_PWM-t f Therefore, the lower the power supply voltage VDD is, the shorter the actual on time of the LED connected to the OUT port will be, resulting in a dimmer display problem of the LED brightness.

[0053] To solve this problem, the present application provides a driving signal display device. Optionally, the driving signal adjustment device includes: a signal acquisition circuit and a compensation signal generation circuit respectively connected to the target driving object, the acquisition end of the signal acquisition circuit is connected to the target driving object that outputs the driving signal, and the output end of the signal acquisition circuit is connected to the input end of the compensation signal generation circuit; the signal acquisition circuit is used to acquire the power supply signal of the target driving object and transmit the power supply signal to the compensation signal generation circuit, the power supply signal includes at least one of a voltage signal and a current signal; the compensation signal generation circuit is used to obtain the power supply signal, and generate a compensation signal for adjusting the first signal according to the change of the power supply signal, the first signal is related to the driving signal, and includes at least one of a reference current signal and a pulse width modulation signal.

[0054] Optionally, the adjustment of the first signal through the compensation signal includes adjusting the working state of the target driving object and the electrical parameters of the first signal (such as voltage, current, timing, pulse width and other parameters), and the drive signal is adjusted through these adjustment methods to eliminate the impact of power supply differences.

[0055] Optionally, to improve the accuracy of the power supply signal, the signal acquisition circuit is connected to an internal circuit of the target driven object to obtain an actual power supply voltage of the target driven object.

[0056] In one embodiment, the signal acquisition circuit includes a plurality of resistors connected in series, and the signal acquisition circuit acquires a power supply voltage or a power supply current generated by an external power supply supplying power to a target driving object, and outputs a power supply signal representing the power supply voltage or the power supply current to the compensation signal generation circuit based on the acquisition result. The power supply signal can be processed by an analog circuit or a digital circuit, and the compensation signal generation circuit generates a compensation signal according to the power supply signal.

[0057] Optionally, the compensation signal generating circuit includes a first signal conversion module and a first compensation signal generating module. The first signal conversion module is connected to the signal acquisition circuit to convert the power supply signal output by the signal acquisition circuit from an analog signal to a digital signal. The first compensation signal generating module receives the converted power supply signal and generates a compensation signal for adjusting a reference current according to a deviation between the power supply signal and a preset signal.

[0058] In one embodiment, the power supply signal output by the signal acquisition circuit is an analog signal, and the first signal conversion circuit may be an analog-to-digital converter, which converts the analog signal into a digital signal. The first compensation signal generation circuit is a digital logic circuit, which performs logic processing on the digital signal output by the analog-to-digital converter to obtain a compensation signal for adjusting the reference current.

[0059] Optionally, due to the difference in power supply, the luminous effects of different LEDs deviate. The first compensation signal generating module obtains the digital signal output by the first signal conversion module, compares the difference between the digital signal and the digital signal output by the first signal conversion module in other drive signal adjustment devices, and generates a compensation signal for adjusting the current gain gear corresponding to the reference current according to the difference after the difference reaches a preset limit (such as exceeding a preset range). The compensation signal is given to the reference current module of the target drive object (such as the mirror current source of the input reference current), and the reference current module adjusts the current gain gear according to the compensation signal and outputs the corresponding reference current.

[0060] In one embodiment, the current gain of the reference current module uses 6 bits, a total of 64 levels, and the current gain level is adjusted according to the compensation signal. Specifically, the reference current module receives the compensation signal and adjusts the level corresponding to the current current gain range with the minimum step to complete the coarse adjustment of the drive signal.

[0061] Optionally, the compensation signal generating circuit also includes a second signal conversion module, the input end of the second signal conversion module is connected to the signal acquisition circuit, and the output end is connected to the intermediate compensation circuit in the target drive object for processing the pulse width modulation signal, so as to convert the power supply signal into a compensation signal for adjusting the pulse width modulation signal.

[0062] In one embodiment, the intermediate compensation circuit includes an intermediate module and a delay module, and processes the received compensation signal through the principle of capacitor charge and discharge delay. The second signal conversion module converts the power supply signal into an analog usable voltage / current signal; the PWM signal given to the target drive object by the PWM signal generation module is adjusted through the intermediate compensation circuit to complete the fine adjustment of the drive signal.

[0063] In one embodiment, the second signal conversion module includes an operational amplifier AMP1, a resistor R3, a resistor R4, a field effect transistor M4, a field effect transistor M5 and a field effect transistor M6. The in-phase input terminal of the operational amplifier AMP2 is connected to the signal acquisition circuit, the inverting input terminal is connected to the first end of the resistor R3 and the source of the field effect transistor M4, and the output terminal of the operational amplifier AMP2 is connected to the gate of the field effect transistor M4. The drain of the field effect transistor M4 is connected to the drain of the field effect transistor M5, the gate of the field effect transistor M5, and the gate of the field effect transistor M6, and the source of the field effect transistor M5 and the source of the field effect transistor M6 are connected to the power supply voltage VDD. Among them, the first end of the resistor R3 can be used as a bias current port Ibias, the gate of the field effect transistor M5 can be used as a bias voltage port Vbias, and the drain of the field effect transistor M6 can be used as a bias current port ibias. The compensation signal can be transmitted to the intermediate compensation circuit through the bias voltage port or the bias current port.

[0064] The drive signal adjustment device of the present application collects the power supply signal of the target drive object through the signal acquisition circuit, transmits the power supply signal to the compensation signal generation circuit, and the compensation signal generation circuit generates a compensation signal for adjusting the first signal according to the change of the power supply signal, and adjusts the drive signal according to the change of the first signal. The embodiment of the present application can adjust the drive signal of the drive object according to the change of the power supply of the drive object, eliminate the influence of the power supply difference, and thus improve the display effect of the LED.

[0065] According to one aspect of the present application, the present application also proposes a driving signal adjustment method, such as Figure 7 As shown, the driving signal adjustment method is used in the driving signal adjustment device described in the above embodiment, and the driving signal adjustment method includes:

[0066] S101: Collecting a power supply signal of a target driving object.

[0067] Optionally, the power supply signal includes at least one of a voltage signal and a current signal. The drive signal adjustment device can collect the actual power supply voltage or the actual power supply current of the target drive object, and then output a voltage signal representing the actual power supply voltage or a current signal representing the actual power supply current.

[0068] Optionally, collecting the power supply signal of the target driven object includes: connecting to the internal circuit of the target driven object to obtain the actual power supply voltage inside the target driven object. The accurate actual power supply voltage is obtained by connecting to the internal circuit of the target driven object. In this way, the loss caused by the line transmission from the external power supply to the target driven object is avoided from affecting the power supply signal collection.

[0069] Optionally, the signal acquisition circuit may also be connected to a port of the target drive object for outputting current power supply voltage information or power supply current information, and acquire the power supply signal according to the information output by the port.

[0070] S102: Generate a compensation signal for adjusting the first signal according to a change of the power supply signal.

[0071] Optionally, the first signal is related to the driving signal, and includes at least one of a reference current signal and a pulse width modulation signal.

[0072] Optionally, when the power supply signal is a voltage signal, the compensation signal generating circuit adjusts the reference current according to the difference in power supply signals of different driving objects, and thus generates a compensation signal for adjusting the electrical signal according to the change in the power supply signal, including: obtaining a first voltage signal value corresponding to the actual power supply voltage and a second voltage signal difference of the driving object related to the target driving object, and determining the deviation between the first voltage signal value and the second voltage signal value; if the deviation exceeds a preset range, generating a compensation signal for adjusting the reference current according to the deviation.

[0073] In one embodiment, information of a driving object related to a target driving object may be preset, and after obtaining a power supply signal corresponding to the target driving object, the power supply signal corresponding to the related driving object is queried, and the queried power supply signal is used as a signal to be compared, and it is detected whether the signal value of the power supply signal corresponding to the target driving object and the signal value of the signal to be compared are consistent (such as whether the deviation of the signal value is within a preset range). If so, a compensation signal for adjusting the reference current is not generated, and if not, a compensation signal for adjusting the reference current is generated according to the deviation.

[0074] Optionally, the compensation signal may be current gain information corresponding to the reference current signal. Generating a compensation signal for adjusting the reference current according to the deviation includes: acquiring current gain information corresponding to the deviation, and adjusting the current gain level corresponding to the reference current based on the current gain information.

[0075] In one embodiment, a reference current is outputted through a reference current module, the reference current module receives a compensation signal, current gain information is obtained through the compensation signal, and the current gain level for adjusting the reference current is adjusted according to the current gain information. The current gain information may be the current gain level corresponding to the reference current, or may be information about the current gain level that needs to be increased or decreased.

[0076] Optionally, the first signal includes a pulse width modulation signal, and a compensation signal for adjusting the electrical signal is generated according to the change of the power supply signal, including: converting the actual power supply voltage into a voltage signal or a current signal for adjusting the pulse width modulation signal, so as to adjust the pulse width or timing of the pulse width modulation signal through the voltage signal or the current signal.

[0077] Optionally, the method of adjusting the driving signal by the reference current and the method of adjusting the pulse width modulation signal can be used separately or in combination. When the LED product driven by the driving object is a display screen or other display device composed of multiple LEDs, the driving signal adjustment method of the present application can effectively adjust the display brightness of each LED, thereby improving the consistency of the display effect of the display device.

[0078] According to one aspect of the present application, the present application also provides a display driving device, such as Figure 8 As shown, the display driving device includes a driving object and a driving signal adjustment device, wherein the driving object is connected to the LED, the driving signal adjustment device is connected to the driving object, and the driving object outputs a driving signal for driving the LED to emit light according to a compensation signal output by the driving signal adjustment device.

[0079] Optionally, it includes: a signal acquisition circuit and a compensation signal generating circuit respectively connected to a target driving object, wherein an acquisition end of the signal acquisition circuit is connected to a target driving object outputting a driving signal, and an output end of the signal acquisition circuit is connected to an input end of the compensation signal generating circuit; the signal acquisition circuit is used to acquire a power supply signal of the target driving object and transmit the power supply signal to the compensation signal generating circuit, wherein the power supply signal includes at least one of a voltage signal and a current signal; the compensation signal generating circuit is used to obtain the power supply signal and generate a compensation signal for adjusting a first signal according to a change of the power supply signal, wherein the first signal is related to the driving signal and includes at least one of a reference current signal and a pulse width modulation signal.

[0080] Optionally, the compensation signal generating circuit includes a first signal conversion module and a first compensation signal generating module, wherein the first signal conversion module is connected to the signal acquisition circuit to convert the power supply signal output by the signal acquisition circuit from an analog signal to a digital signal;

[0081] The first compensation signal generating module receives the converted power supply signal, and generates a compensation signal for adjusting a reference current according to a deviation between the power supply signal and a preset signal.

[0082] Optionally, the compensation signal generating circuit also includes a second signal conversion module, the input end of the second signal conversion module is connected to the signal acquisition circuit, and the output end is connected to an intermediate compensation circuit in the target drive object for processing a pulse width modulation signal, so as to convert the power supply signal into a compensation signal for adjusting the pulse width modulation signal.

[0083] Optionally, the collecting the power supply signal of the target driving object includes:

[0084] The target drive object is connected to an internal circuit to obtain an actual supply voltage inside the target drive object.

[0085] Optionally, a compensation signal for adjusting the electrical signal is generated according to the change of the power supply signal, including: obtaining a first voltage signal value corresponding to the actual power supply voltage and a second voltage signal difference of a driving object related to the target driving object, and determining a deviation between the first voltage signal value and the second voltage signal value; if the deviation exceeds a preset range, generating a compensation signal for adjusting the reference current according to the deviation.

[0086] Optionally, generating a compensation signal for adjusting a reference current according to the deviation includes:

[0087] Current gain information corresponding to the deviation is obtained, and a current gain level corresponding to the reference current is adjusted based on the current gain information.

[0088] Optionally, the first signal includes a pulse width modulation signal, and the compensation signal for adjusting the electrical signal generated according to the change of the power supply signal includes: converting the actual power supply voltage into a voltage signal or a current signal for adjusting the pulse width modulation signal, so as to adjust the pulse width or timing of the pulse width modulation signal through the voltage signal or the current signal.

[0089] In an optional embodiment, an electronic device is provided, such as Fig. 9 As shown, Fig. 9The electronic device 4000 shown includes: a processor 4001 and a memory 4003. The processor 4001 and the memory 4003 are connected, such as through a bus 4002. Optionally, the electronic device 4000 may also include a transceiver 4004, which may be used for data interaction between the electronic device and other electronic devices, such as data transmission and / or data reception. It should be noted that in actual applications, the transceiver 4004 is not limited to one, and the structure of the electronic device 4000 does not constitute a limitation on the embodiments of the present application.

[0090] Processor 4001 may be a CPU (Central Processing Unit), a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. Processor 4001 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.

[0091] The bus 4002 may include a path to transmit information between the above components. The bus 4002 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus. The bus 4002 may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, only one thick line is used in the figure, but it does not mean that there is only one bus or one type of bus.

[0092] Memory 4003 can be ROM (Read Only Memory) or other types of static storage devices that can store static information and instructions, RAM (Random Access Memory) or other types of dynamic storage devices that can store information and instructions, or it can be EEPROM (Electrically Erasable Programmable Read Only Memory), CD-ROM (Compact Disc Read Only Memory) or other optical disk storage, optical disk storage (including compressed optical disk, laser disc, optical disk, digital versatile disc, Blu-ray disc, etc.), magnetic disk storage medium, other magnetic storage devices or any other medium that can be used to carry or store computer programs and can be read by a computer, without limitation here.

[0093] The memory 4003 is used to store the computer program for executing the embodiment of the present application, and the execution is controlled by the processor 4001. The processor 4001 is used to execute the computer program stored in the memory 4003 to implement the steps shown in the above method embodiment.

[0094] Among them, the electronic device can be any electronic product that can interact with an object, such as a personal computer, a tablet computer, a smart phone, a personal digital assistant (PDA), a game console, an interactive network television (IPTV), a smart wearable device, etc.

[0095] The electronic device may also include a network device and / or an object device, wherein the network device includes, but is not limited to, a single network server, a server group consisting of multiple network servers, or a cloud consisting of a large number of hosts or network servers based on cloud computing.

[0096] The network where the electronic device is located includes but is not limited to the Internet, a wide area network, a metropolitan area network, a local area network, a virtual private network (Virtual Private Network, VPN), etc.

[0097] An embodiment of the present application provides a computer storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps and corresponding contents of the aforementioned method embodiment can be implemented.

[0098] The terms "first", "second", "third", "fourth", "1", "2", etc. (if any) in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that shown or described in the drawings.

[0099] It should be understood that, although each operation step is indicated by arrows in the flowchart of the embodiment of the present application, the implementation order of these steps is not limited to the order indicated by the arrows. Unless clearly stated herein, in some implementation scenarios of the embodiment of the present application, the implementation steps in each flowchart can be performed in other orders according to demand. In addition, some or all of the steps in each flowchart may include multiple sub-steps or multiple stages based on actual implementation scenarios. Some or all of these sub-steps or stages may be executed at the same time, and each sub-step or stage in these sub-steps or stages may also be executed at different times respectively. In different scenarios of execution time, the execution order of these sub-steps or stages may be flexibly configured according to demand, and the embodiment of the present application does not limit this.

[0100] The above is only an optional implementation method for some implementation scenarios of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the technical concept of the solution of the present application, other similar implementation methods based on the technical ideas of the present application are also within the protection scope of the embodiments of the present application.

Claims

1. A drive signal adjustment device, It is characterized in that include: A signal acquisition circuit and a compensation signal generating circuit respectively connected to a target driving object, wherein an acquisition end of the signal acquisition circuit is connected to the target driving object outputting a driving signal, and an output end of the signal acquisition circuit is connected to an input end of the compensation signal generating circuit; The signal acquisition circuit is used to acquire a power supply signal of the target drive object and transmit the power supply signal to the compensation signal generation circuit, wherein the power supply signal includes at least one of a voltage signal and a current signal; The compensation signal generating circuit is used to obtain the power supply signal, and generate a compensation signal for adjusting a first signal according to a change of the power supply signal. The first signal is related to the drive signal and includes at least one of a reference current signal and a pulse width modulation signal.

2. The drive signal adjustment device according to claim 1, It is characterized in that The compensation signal generating circuit comprises a first signal conversion module and a first compensation signal generating module, wherein the first signal conversion module is connected to the signal acquisition circuit and converts the power supply signal output by the signal acquisition circuit from an analog signal to a digital signal; The first compensation signal generating module receives the converted power supply signal, and generates a compensation signal for adjusting a reference current according to a deviation between the power supply signal and a preset signal.

3. The drive signal adjustment device according to claim 1, It is characterized in that The compensation signal generating circuit also includes a second signal conversion module, the input end of the second signal conversion module is connected to the signal acquisition circuit, and the output end is connected to the intermediate compensation circuit in the target drive object for processing the pulse width modulation signal, so as to convert the power supply signal into a compensation signal for adjusting the pulse width modulation signal.

4. A driving signal adjustment method, It is characterized in that The drive signal adjustment device according to any one of claims 1 to 3 comprises: Collecting a power supply signal of a target driving object, wherein the power supply signal includes at least one of a voltage signal and a current signal; A compensation signal for adjusting a first signal is generated according to a change of the power supply signal, wherein the first signal is related to the drive signal and includes at least one of a reference current signal and a pulse width modulation signal.

5. The driving signal adjustment method according to claim 4, It is characterized in that The collecting of the power supply signal of the target driving object includes: The target drive object is connected to an internal circuit of the target drive object to obtain an actual supply voltage inside the target drive object.

6. The driving signal adjustment method according to claim 5, It is characterized in that Generating a compensation signal for adjusting the electric signal according to the change of the power supply signal comprises: Acquire a first voltage signal value corresponding to the actual power supply voltage and a second voltage signal difference of a drive object related to the target drive object, and determine a deviation between the first voltage signal value and the second voltage signal value; If the deviation exceeds a preset range, a compensation signal for adjusting a reference current is generated according to the deviation.

7. The driving signal adjustment method according to claim 6, It is characterized in that Generating a compensation signal for adjusting a reference current according to the deviation comprises: Current gain information corresponding to the deviation is obtained, and a current gain level corresponding to the reference current is adjusted based on the current gain information.

8. The driving signal adjustment method according to claim 5, It is characterized in that The first signal includes a pulse width modulation signal, and the generating of a compensation signal for adjusting the electrical signal according to a change of the power supply signal includes: The actual supply voltage is converted into a voltage signal or a current signal for adjusting the pulse width modulation signal, so as to adjust the pulse width or timing of the pulse width modulation signal through the voltage signal or the current signal.

9. A display driver device, It is characterized in that The display driving device includes a driving object and a driving signal adjustment device as described in any one of claims 1 to 3, wherein the driving object is connected to the LED, and the driving signal adjustment device is connected to the driving object, and the driving object outputs a driving signal for driving the LED to emit light according to a compensation signal output by the driving signal adjustment device.

10. A computer-readable storage medium having a computer program stored thereon, It is characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 4 to 8 are implemented.

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