A control system based on small spacing Mini LED display driving

Abstract

The application relates to the technical field of LED display driving, in particular to a control system based on small-pitch MiniLED display driving, which comprises a clock conversion module, a clock comparison module, a cycle judgment module, a voltage drop control module and a driving control module.In the application, the frame output cycle of a tablet computer master control chip is subjected to characteristic dimension degradation scaling with a clock frequency multiplication constant to construct a single clock target, the coincidence deviation span of the target and a bottom layer driving clock is determined to determine whether the target falls into a tolerance interval, dynamic alignment of the driving clock to the master control frame output is realized, a beat fluctuation distribution sequence is constructed in combination with a clock cycle change span extracted in bus transmission configuration, a cycle extension boundary is accurately established, the boundary is positioned based on a voltage drop mapping diagram and a bias reduction target is obtained, surplus sections of a reference bias voltage are eliminated, time sequence redundancy between driving current supply and data refreshing is eliminated, and accurate synchronization of display control and tablet computer frame output is formed.

Description

Technical Field

[0001] This invention relates to the field of LED display driving technology, and in particular to a control system based on small-pitch MiniLED display driving. Background Technology

[0002] The LED display driver technology field mainly involves the current supply and lighting timing adjustment mechanism of semiconductor light-emitting device arrays, including row scanning circuits, column data driving circuits, grayscale control logic, and clock synchronization buses. It generates corresponding pulse width modulation duty cycle signals or constant current source reference voltages by parsing externally input video stream data, injecting precise driving currents row by row and column by column into the micro-light-emitting diode pixels on the display panel to construct images at the physical pixel level. The tablet computer control system refers to the underlying hardware architecture responsible for coordinating image rendering and transmission tasks between the tablet host and the screen. It focuses on converting frame buffer data generated by the operating system to the physical pixel array of the screen. The mainstream approach is for the central processing unit to send red, green, and blue primary color image data frames to the driver chip on the display panel side via a mobile industry processor interface. The shift register within the driver chip receives the external clock signal and shifts in digital row data row by row. Then, a latch maintains the digital level of the current row under the trigger of an enable pulse. Finally, a digital-to-analog conversion circuit outputs a specific analog voltage, which is directly applied to the cross-arranged source and gate conductive lines inside the display panel to provide a conductive path for the light-emitting devices.

[0003] In existing tablet computer display control technology, row scanning and column data driving rely on their own independent clock references. The clock cycle of each module is fixed and lacks a dynamic alignment mechanism with the tablet's main control frame output cycle. This results in the underlying driving clock cycle being difficult to accurately match the actual refresh requirements of the display panel when the tablet's frame output cycle fluctuates. This causes a deviation between the timing of the driving current injection and the arrival time of the image data, introducing additional cumulative errors in the pixel lighting timing and reducing the accuracy of grayscale control at the physical pixel level. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and propose a control system based on small-pitch MiniLED display driving.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a control system based on small-pitch MiniLED display driving includes: The clock conversion module obtains the frame output period of the tablet computer's main control chip, collects the clock multiplication constant in the memory, and performs feature dimension downgrading and scaling by fusing the frame output period of the main control chip and the clock multiplication constant to obtain a single clock target. The clock comparison module, based on the single clock target, collects the underlying driving clock cycle, extracts the overlap deviation span between the two, determines whether the underlying driving clock cycle falls within the target tolerance range based on the overlap deviation span, and constructs a clock overwrite instruction. The cycle determination module obtains the hardware communication bus transmission configuration of the tablet computer according to the clock overwrite instruction, collects the refresh cycle constant in the memory, extracts the clock cycle change span in the bus to construct the clock fluctuation distribution sequence, analyzes the fluctuation overflow situation, and establishes the cycle extension boundary. The pressure drop control module collects a preset pressure drop conversion constant to construct a pressure drop mapping map, locates the period extension boundary coordinates within the pressure drop mapping map, extracts the pressure drop conversion constant associated gradient, and obtains the bias reduction target. The drive control module acquires the reference bias voltage of the tablet computer, analyzes the surplus of the reference bias voltage of the tablet computer based on the bias reduction target, eliminates the surplus road segments and retains the suitable road segments, and generates a control record for driving the tablet computer for the small-pitch MiniLED display.

[0006] As a further aspect of the present invention, during the analysis of the fluctuation overflow situation, the peak node corresponding to the refresh cycle constant is extracted, and the deviation between the peak node and the clock cycle change span is compared.

[0007] As a further aspect of the present invention, the single clock target includes a reference frequency, a synchronization phase, and a timing tick; the clock overwrite instruction includes a register address, a trigger identifier, and a duty cycle parameter; the period extension boundary includes a delay threshold, a safety margin, and a spread spectrum range; the bias reduction target includes a compensation voltage value, a current attenuation amount, and a grayscale fine-tuning order; and the small-pitch MiniLED display driver tablet PC control record includes a tablet PC power consumption log, luminous efficiency data, and a pixel brightness list.

[0008] As a further aspect of the present invention, the clock conversion module includes: The period extraction submodule obtains the frame output period of the tablet computer's main control chip, extracts the level inversion amount within the frame output period of the tablet computer's main control chip, calibrates the waveform distribution coordinates for the preset test set corresponding to the level inversion amount, determines the deviation state of the waveform distribution coordinates from the oscillation node, and generates the frame output reference degree. The constant correlation submodule collects the clock frequency multiplication constant in the memory, combines it with the frame output reference degree, maps the clock frequency multiplication constant in the memory to extract the distributed constant weight vector, and correlates the distributed constant weight vector with the frame output reference degree to filter overlapping node segments to obtain the fused correlation quantity. The degradation scaling submodule performs degradation scaling based on the fusion correlation quantity to locate the extreme value boundary degree, projects the fusion correlation quantity into the extreme value boundary degree to divide the feature level interval, filters the median item within the feature level interval, and generates a single clock target.

[0009] As a further aspect of the present invention, the clock comparison module includes: The deviation extraction submodule collects the underlying driving clock cycle, compares the single clock target with the underlying driving clock cycle to extract time domain feature segments, matches the time domain feature segments to locate the coordinates of the phase coincidence intersection point of the two, performs difference mapping on the coordinates of the coincidence intersection point to generate the coincidence deviation span. The tolerance comparison submodule obtains the target tolerance interval boundary within the preset sample dataset, projects the overlap deviation span onto the target tolerance interval boundary to divide the boundary allowance, determines the corresponding falling node segment based on the boundary allowance, and generates the tolerance matching degree. The instruction construction submodule reads the driver overwrite protocol template in the tablet computer's storage medium, injects the tolerance matching degree into the driver overwrite protocol template to perform head and tail identifier additional encapsulation, extracts the associated payload bit sequence after the encapsulation operation, and constructs the clock overwrite instruction.

[0010] As a further aspect of the present invention, the period determination module includes: The sequence construction submodule obtains the tablet computer hardware communication bus transmission configuration according to the clock overwrite instruction, collects the refresh cycle constant in the memory, extracts the clock cycle change span in the tablet computer hardware communication bus transmission configuration, combines the clock cycle change span along the time reference axis to arrange normalized state points, and generates a beat fluctuation distribution sequence. The peak deviation submodule, based on the clock fluctuation distribution sequence, maps the refresh cycle constant in the memory to the clock fluctuation distribution sequence to extract the extreme peak nodes, and performs an absolute value difference operation between the extreme peak nodes and the clock cycle change span to obtain the fluctuation deviation span. The boundary establishment submodule receives the fluctuation overflow reference value in the preset test sample set based on the fluctuation deviation span, compares the fluctuation deviation span with the fluctuation overflow reference value to define the tolerance distribution extreme value term, multiplies the tolerance distribution extreme value term by the compensation multiplier to extract the incremental scale, and establishes the period extension boundary.

[0011] As a further aspect of the present invention, the voltage drop control module includes: The mapping construction submodule collects a preset voltage drop conversion constant and a reference voltage scale, and divides the preset voltage drop conversion constant and the reference voltage scale into a two-dimensional spatial array to divide the grid blocks. It then establishes a voltage drop feature mapping map by combining the boundary points of the grid blocks. The gradient extraction submodule projects the coordinates of the intersection center node of the periodic extension boundary into the pressure drop feature map, extracts the tangent value of the tangent along the tangent direction associated with the intersection center node coordinates, and generates the pressure drop associated gradient rate. The bias calculation submodule monitors the initial bias configuration constant within the solid-state storage medium, calculates the distributed bias quantization step size by combining the voltage drop-related gradient rate, and performs stepwise numerical reduction based on the distributed bias quantization step size and a decreasing iterative operation to obtain the bias reduction target.

[0012] As a further aspect of the present invention, the formula for calculating the distributed bias quantization step size is as follows: ; in, Represents the distribution bias quantization step size. This represents the initial bias configuration constant. Index identifiers representing different regions within a group of storage units. This represents the total number of regions divided within a group of storage cells. Representing the Normalized weighting coefficients for each region in the pressure drop distribution Representing the The measured pressure drop fluctuation amplitude of each region within the current iteration cycle. This represents the standard deviation of the measured pressure drop fluctuation amplitude across all regions within the current iteration period. This represents the average value of the measured pressure drop fluctuation amplitude across all regions within the current iteration period.

[0013] As a further aspect of the present invention, the drive control module includes: The voltage extraction submodule obtains the reference bias voltage of the tablet computer, extracts the corresponding surplus parameter by subtracting the reference bias voltage of the tablet computer from the value of the bias reduction target execution node, and defines the basic mapping span range by combining the unidirectional corresponding surplus parameter distribution to generate the bias associated voltage distribution segment. The surplus removal submodule extracts the preset fault tolerance fluctuation threshold limit, compares the bias associated voltage distribution segment with the fault tolerance fluctuation threshold limit to calibrate the surplus road segment node, removes the surplus road segment node and extracts the associated state retention item to obtain the retained and adapted road segment set. The recording generation submodule monitors the underlying communication instruction header protocol in the tablet computer register, injects the reserved adaptation segment set into the underlying communication instruction header protocol to perform bit-width overlapping encapsulation operation, combines and outputs a full-width overlapping encapsulation sequence, and generates a small-pitch MiniLED display driver tablet computer control record.

[0014] Compared with the prior art, the advantages and positive effects of the present invention are as follows: In this invention, a single clock target is constructed by downgrading and scaling the frame output period of the tablet computer's main control chip and the clock multiplication constant in terms of feature dimensions. The situation where the target falls within the tolerance range is determined based on the overlap deviation between the target and the underlying driving clock, thereby achieving dynamic alignment of the driving clock with the main control frame output. In addition, a clock cycle variation distribution sequence is constructed by combining the clock cycle variation range extracted from the bus transmission configuration, which can accurately establish the cycle extension boundary. Then, the boundary is located based on the voltage drop mapping map and the bias reduction target is obtained. The excess segments in the reference bias voltage are eliminated, thereby eliminating the timing redundancy between the driving current supply and data refresh, and making the display control and the tablet computer frame output precisely synchronized. Attached Figure Description

[0015] Figure 1 This is a system flowchart of the present invention; Figure 2 This is a flowchart of the clock conversion module of the present invention; Figure 3 This is a flowchart of the clock comparison module of the present invention; Figure 4 This is a flowchart of the period determination module of the present invention; Figure 5 This is a flowchart of the voltage drop control module of the present invention; Figure 6 This is a flowchart of the drive control module of the present invention. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0017] In the description of this invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, in the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0018] Please see Figure 1 A control system based on a small-pitch MiniLED display driver includes: The clock conversion module obtains the frame output period of the tablet computer's main control chip, collects the clock multiplication constant in the memory, and performs feature dimension downgrading and scaling by fusing the frame output period of the main control chip and the clock multiplication constant to obtain a single clock target. The clock comparison module, based on a single clock target, collects the underlying driving clock cycle, extracts the overlap deviation span between the two, determines whether the underlying driving clock cycle falls within the target tolerance range based on the overlap deviation span, and constructs clock overwrite instructions. The cycle judgment module obtains the hardware communication bus transmission configuration of the tablet computer according to the clock overwrite instruction, collects the refresh cycle constant in the memory, extracts the clock cycle change span in the bus to construct the beat fluctuation distribution sequence, extracts the peak node corresponding to the refresh cycle constant, compares the deviation between the peak node and the clock cycle change span to analyze the fluctuation overflow situation, and establishes the cycle extension boundary. The pressure drop control module collects preset pressure drop conversion constants to construct a pressure drop mapping map, locates the periodic extension boundary coordinates within the pressure drop mapping map, extracts the pressure drop conversion constant associated gradient, and obtains the offset reduction target. The drive control module acquires the reference bias voltage of the tablet computer, analyzes the surplus of the reference bias voltage of the tablet computer based on the bias reduction target, eliminates the surplus segments and retains the suitable segments, and generates a control record for the tablet computer driven by the small-pitch MiniLED display.

[0019] Single clock targets include reference frequency, synchronization phase, and timing tick; clock overwrite instructions include register address, trigger flag, and duty cycle parameter; cycle extension boundaries include delay threshold, safety margin, and spread spectrum range; bias reduction targets include compensation voltage value, current attenuation, and grayscale fine-tuning order; small-pitch MiniLED display driver tablet PC control records include tablet PC power consumption log, luminous efficiency data, and pixel brightness list.

[0020] Please see Figure 2 The clock conversion module includes: The period extraction submodule obtains the frame output period of the tablet computer's main control chip, extracts the level inversion amount within the frame output period of the tablet computer's main control chip, calibrates the waveform distribution coordinates for the preset test set corresponding to the level inversion amount, determines the deviation state of the waveform distribution coordinates from the oscillation node, and generates the frame output reference degree. The hardware timer directly reads the display output interface register of the tablet's main control chip via the internal bus. This process is the fundamental data detection hub for maintaining stable interactive operation of the entire tablet control system, directly affecting the accurate issuance of subsequent graphics rendering commands. The system captures the tablet's main control chip's frame output period value of 16.67ms. Using an integrated probe array, the clock pins of the main control chip are monitored synchronously, and the absolute number of level changes from low to high and from high to low within the 16.67ms time window is counted, recording a level transition of 8520 times. A preset set of 100 standard clock test sets in the internal read-only memory is called. The test set contains a mapping matrix between the ideal number of transitions and the nominal period. The level transition of 8520 and the period of 16.67 are projected onto a two-dimensional rectangular coordinate space, establishing the waveform distribution coordinates as (16.67, 8520). The default absolute coordinates of the oscillation node (0, 0) are extracted, and the Euclidean distance algorithm is used to calculate the length of the straight-line vector from (16.67, 8520) to the oscillation node (0, 0), determining the deviation distance value to be 8520.01. The deviation distance value is divided by the preset full-load operation threshold of 10000 to perform linear normalization calculation, generating a digitally quantized frame output reference degree of 0.852, which enhances the physical reliability of the reference calibration, thereby providing an extremely accurate time base reference for high-quality MiniLED display control and effectively suppressing the screen flicker problem when rendering complex scenes.

[0021] The constant correlation submodule collects the clock frequency multiplication constant in the memory, combines it with the frame output reference degree, maps the clock frequency multiplication constant in the memory to extract the distributed constant weight vector, correlates the distributed constant weight vector with the frame output reference degree to screen overlapping node segments, and obtains the fused correlation quantity. The microcontroller accesses the EEPROM solid-state storage area using the I2C communication protocol. In this level of tablet PC control logic, the motherboard microcontroller needs to perform deep collaborative scheduling of various underlying storage peripherals to ensure the safety and reliability of the clock distribution mechanism. It reads the clock multiplication constant in the memory at address 0x0A, obtaining a value of 12. It then retrieves the previously generated frame output reference degree of 0.852 to construct a 4x4 dimension underlying feature matrix. The memory clock multiplication constant of 12 is injected into this matrix as a scalar multiplier. A full-area numerical expansion is performed on the feature matrix to extract a one-dimensional distributed constant weight vector [1.2, 0.8, 1.5, 0.9] containing four elements. Each element in this distributed constant weight vector is multiplied by the frame output reference degree of 0.852 to obtain a mapping vector [1.022, 0.681, 1.278, 0.766]. Within a preset valid filtering window of [0.700, 1.200], boundary comparisons are performed on the elements of the mapped vector to filter out overlapping node segments that fall completely within the window, corresponding to values ​​of 1.022 and 0.766. The filtered values ​​are then summed to obtain a value of 1.788, generating a fusion correlation value of 1.788. This avoids waveform distortion caused by extreme frequency multiplication, effectively ensuring that the backlight matrix can obtain a clean, glitch-free driving signal in real time during high refresh rate dynamic screen switching in the MiniLED display control architecture.

[0022] The degradation and scaling submodule performs degradation and scaling based on the extreme value boundary degree of the fused correlation quantity. It projects the fused correlation quantity into the extreme value boundary degree to divide the feature level interval, filters the median term within the feature level interval, and generates a single clock target. The comparator loads the calculated fusion correlation value of 1.788 and locates the upper and lower limit settings in the memory control table. This is a crucial limiting step for achieving refined tablet computer control. Through a dynamic boundary constraint mechanism, it can effectively prevent the main control chip from crashing due to clock overload. It obtains the preset upper limit of 2.000 and lower limit of 1.000 to construct the extreme value boundary. It performs a degradation scaling operation on the fusion correlation value of 1.788, with the calculation formula being (1.788-1.000) / (2.000-1.000), and outputs a scaling value of 0.788. The scaling value of 0.788 is projected into five consecutive feature level intervals divided by the extreme value boundary with an equal interval of 0.200 steps. The interval endpoints are compared to confirm that 0.788 falls within the fourth interval [0.600, 0.800]. The wake-up cache array reads the five most recent historical clock scaling records within this feature level range, forming an array [0.650, 0.720, 0.750, 0.770, 0.790]. The array elements are sorted in ascending order, and the third value in the middle, 0.750, is directly extracted as the median, generating the final single clock target of 0.750. This eliminates the numerical offset error caused by single burst interference, providing an extremely smooth reference time base for the next level MiniLED display control unit, and comprehensively ensuring the absolute alignment requirements when multi-zone backlights are synchronously lit.

[0023] Please see Figure 3 The clock comparison module includes: The deviation extraction submodule collects the underlying driving clock cycle, compares the single clock target with the underlying driving clock cycle to extract time domain feature segments, matches the time domain feature segments to locate the coordinates of the phase overlap intersection point of the two, performs difference mapping on the coordinates of the overlap intersection point to generate the overlap deviation span. The driver monitoring interface intercepts the underlying driver clock cycle of the display panel via the SPI bus, measuring a real-valued feedback value of 0.745. This interface serves as the underlying bridge between the tablet's control center and the peripheral display module, constantly monitoring the timing health of the hardware panel. The digital signal processor is triggered to load a single clock target of 0.750 and the underlying driver clock cycle of 0.745, recording their timing fluctuation curves over 100 consecutive sampling points. A 10-microsecond time-domain feature segment containing the complete transition from peak to trough is extracted. A sliding window cross-correlation algorithm is used to multiply and integrate the two time-domain feature segments point-by-point, finding the relative displacement when the cross-correlation coefficient reaches its highest peak of 0.98. The coordinates of the intersection point corresponding to this displacement are located as (8.50, 0.748). The difference between the vertical component of this intersection point (0.748) and the single clock target (0.750) is calculated, yielding an absolute deviation of 0.002. By using a lookup table command, the absolute deviation of 0.002 is substituted into a preset 256-level nonlinear mapping table to obtain the amplification compensation amount of 15, generating a coincidence deviation span of 15. This enables the MiniLED display control module to have more ample dynamic response margin and signal fault tolerance redundancy when processing high-contrast complex grayscale images.

[0024] The tolerance comparison submodule obtains the target tolerance interval boundary within the preset sample dataset, projects the overlap deviation span onto the target tolerance interval boundary to divide the boundary allowance, determines the corresponding falling node segment based on the boundary allowance, and generates the tolerance matching degree. The tolerance analysis module loads the preset sample dataset completely from the flash memory medium and retrieves the hardware specification parameters for the current screen resolution. Since the advanced tablet control framework must be seamlessly compatible with display components of different sizes, the adaptive retrieval and matching of parameters here is particularly crucial. The target tolerance interval boundary is obtained as [10, 20]. The previously calculated overlap deviation span of 15 is directly projected into the target tolerance interval boundary [10, 20]. The overlap deviation span of 15 is used to perform difference calculations with the lower limit of the interval 10 and the upper limit of the interval 20, respectively, to obtain the distance to the lower limit margin 5 and the distance to the upper limit margin 5. These two values ​​are combined to divide the current state into the boundary allowable margin set (5, 5). Based on the characteristic that the two values ​​in the boundary allowable margin set are equal, it is determined that the current state perfectly falls into the center node segment of the interval. The quantization code 100 representing the center matching state is written to the register to generate the digital tolerance matching degree 100, thereby reducing the defects of local backlight block flicker and brightness imbalance caused by the underlying timing drift in MiniLED display control.

[0025] The instruction construction submodule reads the driver overwrite protocol template in the tablet computer's storage medium, injects the tolerance matching degree into the driver overwrite protocol template to perform first and last identifier additional encapsulation, extracts the associated payload bit sequence after the encapsulation operation, and constructs the clock overwrite instruction. As shown in Table 1, the protocol parser accurately reads the fixed-format driver overwrite protocol template from the eMMC storage medium inside the tablet PC. In the high-efficiency tablet PC control protocol stack, the targeted retrieval of the fixed-format template can significantly reduce the message parsing overhead of the central processing unit and greatly improve the real-time communication efficiency. The tolerance matching degree of 100 from the aforementioned operation output is extracted, converted to hexadecimal byte 0x64, and injected into the "payload to be written" area of ​​the driver overwrite protocol template, overwriting the initial value of the 3rd byte in Table 1. After the injection operation is completed, the protocol assembler forcibly reads the protocol start frame value 170 at position 0 and the protocol end frame value 204 at position 7 in Table 1, performs the head and tail identifier appending encapsulation action, and concatenates all 8 bytes into a continuous data stream. A mask extraction operation is performed on the data stream after the encapsulation operation, the parity bit is removed, and the fully associated payload bit sequence [170, 85, 4, 100, 0, 0, 0, 204] is separated. This array format is then directly sent to the underlying communication port, successfully constructing a clock overwrite instruction. This lays a solid physical communication foundation for building a low-latency MiniLED display control data link, ensuring perfect synchronization between the user's touch feedback and the screen response.

[0026] Table 1. Driver Overwrite Protocol Template Structure: ; Please see Figure 4 The periodicity determination module includes: The sequence construction submodule obtains the tablet computer hardware communication bus transmission configuration according to the clock overwrite instruction, collects the refresh cycle constant in the memory, extracts the clock cycle change span in the tablet computer hardware communication bus transmission configuration, combines the clock cycle change span along the time base axis to arrange the normalized state points, and generates the beat fluctuation distribution sequence. The bus listener, triggered by the clock overwrite instruction, retrieves the device tree node to obtain the tablet PC hardware communication bus transmission configuration parameter set, which includes a baud rate of 400000 and a bus width of 32. Dynamically capturing and verifying these core communication configuration parameters is a crucial preliminary step in modern tablet PC control strategies for achieving adaptive bus bandwidth allocation and congestion prevention scheduling. It accesses a specified address 0x2F in DDR memory and acquires the refresh cycle constant of 8 milliseconds. It then iterates through the 50 most recent transmission records in the tablet PC hardware communication bus transmission configuration, calculating the difference between the highest clock cycle of 12 milliseconds and the lowest clock cycle of 6 milliseconds, extracting a clock cycle variation span of 6 milliseconds. Dividing this clock cycle variation span of 6 milliseconds by the refresh cycle constant of 8 milliseconds yields a ratio of 0.75. Along the internal 1 MHz time reference axis, five equidistant normalized state points are arranged with an interval coefficient of 0.75 to form an array [0.00, 0.75, 1.50, 2.25, 3.00], generating a beat fluctuation distribution sequence. This achieves the stringent requirements of MiniLED display control for ultra-high frequency screen refresh rhythm, giving the entire device a smooth and tear-free visual presentation experience.

[0027] The peak deviation submodule, based on the clock fluctuation distribution sequence, maps the refresh cycle constant in the memory to the clock fluctuation distribution sequence to extract the extreme peak nodes. It then performs an absolute value difference operation on the extreme peak nodes and the clock cycle change span to obtain the fluctuation deviation span. The addressing controller loads the pre-calculated beat fluctuation distribution sequence [0.00, 0.75, 1.50, 2.25, 3.00]. Within the tablet PC control logic of this calculation step, the addressing controller is responsible for concretizing the abstract beat model data into actual physical address offsets in memory, guiding the precise delivery of data flow, and using the memory refresh cycle constant 8 as an additional shift factor to perform vector addition mapping with each element in the beat fluctuation distribution sequence to generate the mapping sequence [8.00, 8.75, 9.50, 10.25, 11.00]. A maximum value retrieval algorithm is executed within the mapping sequence, and the largest value at the end, 11.00, is extracted as the extreme peak node. The arithmetic logic unit is invoked to perform an absolute value difference operation between the extreme peak node value of 11.00 and the previously obtained clock cycle change span value of 6.00. The calculation formula is the absolute value (11.00-6.00), which directly yields the value 5.00. This results in the final fluctuation deviation span of 5.00, providing an extremely robust anti-crosstalk protection mechanism for the pixel-level synchronous driving of tens of thousands of tiny light-emitting diode beads in the MiniLED display control architecture.

[0028] The boundary establishment submodule receives the fluctuation overflow reference value in the preset test sample set based on the fluctuation deviation span, compares the fluctuation deviation span with the fluctuation overflow reference value to define the tolerance distribution extreme value term, multiplies the tolerance distribution extreme value term by the compensation multiplier to extract the incremental scale, and establishes the period extension boundary. The logic comparison gate reads the calculated fluctuation deviation span of 5.00 and receives the fluctuation overflow reference value of 3.50, which is fixed in the preset test sample set, via the internal bus. The highly integrated tablet PC's internal intelligent power management and various levels of bus arbitration networks all heavily rely on such reference values ​​for the rebalancing and allocation of computing resources. A numerical comparator is called to compare the fluctuation deviation span of 5.00 with the fluctuation overflow reference value of 3.50. Since 5.00 is greater than 3.50, the difference of 1.50 is calculated. This excess difference of 1.50 is defined as the extreme value of the tolerance distribution that needs to be suppressed. A preset hardware compensation factor of 1.20 is extracted from the power management chip register. The extreme value of the tolerance distribution, 1.50, is multiplied by the compensation factor of 1.20, and the product 1.80 is used as the increment scale. Using the standard zero point as the base point, the incremental scale 1.80 is extended in the positive direction, and the interval [0.00, 1.80] is defined in memory to establish the period extension boundary. This can provide a precise delay compensation buffer, reduce the probability of bus hang and restart when handling extreme overload refresh tasks, and ensure the stability of the global MiniLED display control logic under extreme overload conditions such as real-time playback of ultra-high brightness HDR video.

[0029] Please see Figure 5 The voltage drop control module includes: The mapping construction submodule collects the preset voltage drop conversion constant and the reference voltage scale, performs a two-dimensional spatial array arrangement of the preset voltage drop conversion constant and the reference voltage scale to divide the distribution grid blocks, and establishes a voltage drop feature mapping map by combining the boundary points of the distribution grid blocks; The voltage probe pin array reads the power control firmware, acquiring a preset voltage drop conversion constant of 25 and an array containing five discrete reference voltage scales [3.0, 3.1, 3.2, 3.3, 3.4]. In the highly compressed and extremely precise internal structure of a tablet computer control system, real-time voltage status detection across all time periods and domains is an indispensable hardware prerequisite for implementing precise power consumption constraints and overall thermal management mechanisms. The graphics processor uses the preset voltage drop conversion constant of 25 as the X-axis length and the length of the reference voltage scale array of 5 as the Y-axis height, performing a two-dimensional spatial array arrangement, dividing the video memory into a distributed grid block containing 125 independent squares. The coordinates of the extreme boundary points (0, 0), (25, 0), (0, 5), and (25, 5) at the four corners of the distributed grid block are extracted. The bilinear interpolation algorithm is called to fill the blank areas between the four corner points with continuously gradient grayscale blocks. A voltage drop feature map with 125 data anchor points is rendered in the memory buffer, which greatly releases the general computing power resources of the tablet processor, enabling the MiniLED display control center to make full use of this part of the redundant computing power cycle to execute more complex and delicate local dimming algorithms in parallel.

[0030] The gradient extraction submodule projects the periodic extension boundary within the pressure drop feature map to locate the coordinates of the intersection center node, extracts the tangent value of the tangent along the associated tangent direction of the intersection center node coordinates, and generates the pressure drop associated gradient rate. The vector extractor accesses the voltage drop feature map in the video memory, projects the previously calculated upper limit value of the period extension boundary interval, 1.80, onto the map as the horizontal axis, and, together with the default initial vertical axis of 2.50, accurately locates the intersection center node coordinates as (1.80, 2.50). Based on these intersection center node coordinates (1.80, 2.50), the tangent vector of the equipotential line at this coordinate point [1.00, 0.45] of the voltage drop feature map is extracted. The low-level operation of extracting vector tangent information along the associated tangent direction is a high-order hardware-level acceleration behavior within the entire macroscopic tablet computer control domain. It bypasses the lengthy general instruction set, which can significantly reduce the serial calculation burden of the kernel processor. By dividing the vertical axis component 0.45 by the horizontal axis component 1.00, the tangent function is performed to directly obtain the tangent value of 0.45. The tangent value of 0.45 is directly converted into a proportional control parameter, generating a voltage drop-related gradient rate of 0.45. This provides ample space for the underlying instruction scheduling and execution in MiniLED display control to handle high-frequency grayscale PWM dimming and backlight scanning on / off mechanisms.

[0031] The bias calculation submodule monitors the initial bias configuration constant within the solid-state storage medium and, combined with the voltage drop-related gradient rate, uses the following formula: ; Calculate the distributed bias quantization step size, and based on this step size, perform a step-by-step numerical reduction using a decreasing iterative operation to obtain the bias reduction target; where... Represents the distribution bias quantization step size. This represents the initial bias configuration constant. Index identifiers representing different regions within a group of storage units. This represents the total number of regions divided within a group of storage cells. Representing the Normalized weighting coefficients for each region in the pressure drop distribution Representing the The measured pressure drop fluctuation amplitude of each region within the current iteration cycle. This represents the standard deviation of the measured pressure drop fluctuation amplitude across all regions within the current iteration period. This represents the average value of the measured pressure drop fluctuation amplitude across all regions within the current iteration period; Monitor the NAND flash memory address segment within the solid-state storage medium and read the initial bias configuration constant. With a value of 50, in the harsh power control environment of a low-level tablet PC, the safe read voltage reference threshold of the NAND flash memory array is often deeply coupled with the initial bias configuration constant. Any slight fluctuation can induce data flipping errors. The screen panel is divided into four storage cell groups (…). (Equal to 4), normalization weighting coefficients are set according to the distance from the power supply chip. The values ​​are [0.4, 0.3, 0.2, 0.1]. The measured voltage drop fluctuation amplitudes in the four regions of the analog-to-digital converter are... The values ​​are [15, 12, 8, 5] millivolts. The microprocessor calculates the average value. The standard deviation is 10. It is 3.87. Combining this with the aforementioned gradient rate, the formula is: ; The input parameters are processed according to the formula: An accumulation operation is performed to calculate the denominator (0.4 x 15 + 0.3 x 12 + 0.2 x 8 + 0.1 x 5), which equals 11.7. The initial constant 50 divided by 11.7 gives 4.27. The standard deviation 3.87 in the square root term is calculated by dividing the square of the mean 10 by 1 and then taking the square root, resulting in 1.07. Multiplying 4.27 by 1.07 yields the distribution bias quantization step size. The value is 4.56. Loading this quantization step size of 4.56, an iterative decreasing operation is performed, subtracting 4.56 step-by-step from the baseline voltage drop of 20.00. After two reductions, the bias reduction target of 10.88 is obtained. The advantage of this formula lies in the introduction of dual constraints in the calculation of weighting coefficients and regional standard deviations. This optimization of the index enables the MiniLED display control logic to perform millivolt-level precise compensation for the degree of light emission attenuation in different areas of the display module's center and edges, solving the problems of edge light leakage and color unevenness in large-area pure color dark scenes under traditional backlight architectures.

[0032] Please see Figure 6 The drive control module includes: The voltage extraction submodule obtains the reference bias voltage of the tablet computer, extracts the corresponding surplus parameter by subtracting the reference bias voltage of the tablet computer from the value of the bias reduction target execution node, and defines the basic mapping span range by combining the unidirectional corresponding surplus parameter distribution to generate the bias-related voltage distribution segment. The voltage numerical control module obtains the reference bias voltage value of 15.00 for the power supply level output of the tablet computer. The target bias reduction value of 10.88, rigorously calculated in the previous steps, is retrieved. The arithmetic logic unit performs a one-way node value difference operation between the tablet computer's reference bias voltage of 15.00 and the bias reduction target of 10.88. This difference operation logic is an indispensable calculation step in the design of the safe main power supply loop of the tablet computer control framework, defining the effective power consumption safety boundary under full power operation of the motherboard, yielding a corresponding surplus parameter value of 4.12. The lower limit safety retention value of 2.00, which is stored in memory, is extracted. Combined with the calculated one-way corresponding surplus parameter of 4.12, a basic mapping span range with a lower limit of 2.00 and an upper limit of 4.12 is defined in the voltage register. Each millivolt voltage scale within the basic mapping span is memory-addressed to generate a bias-related voltage distribution segment [2.00, 4.12] for actual hardware control, thereby extending the lifespan of the physical components of the matrix driver IC in the MiniLED display control core area and ensuring the long-term reliable operation of the entire high-brightness display module under harsh conditions.

[0033] The surplus removal submodule extracts the preset fault tolerance fluctuation threshold limit, compares the bias associated voltage distribution segment with the fault tolerance fluctuation threshold limit to calibrate the surplus road segment node, removes the surplus road segment node and extracts the associated state retention item to obtain the retained and adapted road segment set. The state evaluator extracts the preset fault tolerance fluctuation threshold limit of 3.50 from the configuration document. As shown in Table 2, the state evaluator divides the bias-related voltage distribution segment [2.00, 4.12] into four test nodes, comparing the voltage values ​​of each node with the fault tolerance fluctuation threshold limit of 3.50. In the latest advanced tablet PC control white paper specification, a state evaluation loop with multiple verification nodes is forcibly established, which can effectively block and filter abnormal spike voltages in the power supply ripple from physically penetrating the extremely sensitive core audio-visual components of the motherboard. Through numerical comparison, it was found that the values ​​of node 3 (3.80) and node 4 (4.10) are greater than the threshold of 3.50, and these two points are marked as severely excessive surplus path nodes. The register erase instruction is activated, completely removing the data memory of the two surplus road segment nodes, Node 3 and Node 4. It forcibly extracts the remaining associated state retention items (Node 1 and Node 2) that meet the threshold condition and are less than 3.50, and aggregates them to generate a set of retained adaptive road segments [2.50, 3.20]. This purifies the current signal injected into the display panel, thereby ensuring the absolute purity of the signal and the linearity of the light emission when the high-precision MiniLED display control is adjusted and controlled at the microampere level in the extremely dark state.

[0034] Table 2: Fault Tolerance Fluctuation Analysis and Processing Table ; The recording generation submodule monitors the underlying communication instruction header protocol in the tablet computer register, injects the reserved adaptation road segment set into the underlying communication instruction header protocol to perform bit-width overlapping encapsulation operation, combines and outputs the full-bit-width overlapping encapsulation sequence, and generates the small-pitch MiniLED display driver tablet computer control record. The protocol merger utilizes an interrupt monitoring mechanism to continuously monitor the register space of the tablet PC controller, intercepting the header protocol of the underlying communication instructions transmitted on the internal bus. This header protocol occupies a fixed 16-bit width, with its initial content all zeros. This set of globally monitored and data frame interception actions, residing at the lowest level, essentially constitutes the first digital gate at the forefront of the entire tablet PC control communication link, aiming to implement underlying security defenses and instruction packet optimization. The previously purified set of reserved adaptation segments [2.50, 3.20] is extracted, and the voltage values ​​2.50 and 3.20 are amplified by a factor of 100 to convert them into integers 250 and 320. These integers are then converted into binary streams and forcibly injected into the lower 8 bits and higher 8 bits of the underlying communication instruction header protocol, performing an overlapping encapsulation operation with the bit widths joined end-to-end. After encapsulation, a 32-bit full-width overlapping encapsulation sequence containing start and end information is output. The cache stack pushes the encapsulated sequence into the transmit queue and sends packets out through the MIPI interface. This ultimately generates a small-pitch MiniLED display driver tablet control record that directly drives the screen to emit light, achieving seamless physical interaction between the bandwidth-intensive top-level MiniLED display control panel and the motherboard tablet control scheduling core. This ultimately gives the entire terminal product an extremely smooth and flagship-level operating experience in terms of touch and vision.

[0035] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments that can be applied to other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A control system based on small-pitch MiniLED display driving, characterized in that, include: The clock conversion module obtains the frame output period of the tablet computer's main control chip, collects the clock multiplication constant in the memory, and performs feature dimension downgrading and scaling by fusing the frame output period of the main control chip and the clock multiplication constant to obtain a single clock target. The clock comparison module, based on the single clock target, collects the underlying driving clock cycle, extracts the overlap deviation span between the two, determines whether the underlying driving clock cycle falls within the target tolerance range based on the overlap deviation span, and constructs a clock overwrite instruction. The cycle determination module obtains the hardware communication bus transmission configuration of the tablet computer according to the clock overwrite instruction, collects the refresh cycle constant in the memory, extracts the clock cycle change span in the bus to construct the clock fluctuation distribution sequence, analyzes the fluctuation overflow situation, and establishes the cycle extension boundary. The pressure drop control module collects a preset pressure drop conversion constant to construct a pressure drop mapping map, locates the period extension boundary coordinates within the pressure drop mapping map, extracts the pressure drop conversion constant associated gradient, and obtains the bias reduction target. The drive control module acquires the reference bias voltage of the tablet computer, analyzes the surplus of the reference bias voltage of the tablet computer based on the bias reduction target, eliminates the surplus road segments and retains the suitable road segments, and generates a control record for driving the tablet computer for the small-pitch MiniLED display.

2. The control system based on small-pitch MiniLED display driving according to claim 1, characterized in that: During the analysis of fluctuation overflow, the peak node corresponding to the refresh cycle constant is extracted, and the deviation of the peak node from the clock cycle change span is compared.

3. The control system based on small-pitch MiniLED display driving according to claim 1, characterized in that: The single clock target includes the reference frequency, synchronization phase, and timing tick; the clock overwrite instruction includes the register address, trigger identifier, and duty cycle parameter; the cycle extension boundary includes the delay threshold, safety margin, and spread spectrum range; the bias reduction target includes the compensation voltage value, current attenuation amount, and grayscale fine-tuning order. The control log for the small-pitch MiniLED display driver tablet includes tablet power consumption logs, luminous efficiency data, and pixel brightness list.

4. The control system based on small-pitch MiniLED display driving according to claim 1, characterized in that, The clock conversion module includes: The period extraction submodule obtains the frame output period of the tablet computer's main control chip, extracts the level inversion amount within the frame output period of the tablet computer's main control chip, calibrates the waveform distribution coordinates for the preset test set corresponding to the level inversion amount, determines the deviation state of the waveform distribution coordinates from the oscillation node, and generates the frame output reference degree. The constant correlation submodule collects the clock frequency multiplication constant in the memory, combines it with the frame output reference degree, maps the clock frequency multiplication constant in the memory to extract the distributed constant weight vector, and correlates the distributed constant weight vector with the frame output reference degree to filter overlapping node segments to obtain the fused correlation quantity. The degradation scaling submodule performs degradation scaling based on the fusion correlation quantity to locate the extreme value boundary degree, projects the fusion correlation quantity into the extreme value boundary degree to divide the feature level interval, filters the median item within the feature level interval, and generates a single clock target.

5. The control system based on small-pitch MiniLED display driving according to claim 1, characterized in that, The clock comparison module includes: The deviation extraction submodule collects the underlying driving clock cycle, compares the single clock target with the underlying driving clock cycle to extract time domain feature segments, matches the time domain feature segments to locate the coordinates of the phase coincidence intersection point of the two, performs difference mapping on the coordinates of the coincidence intersection point to generate the coincidence deviation span. The tolerance comparison submodule obtains the target tolerance interval boundary within the preset sample dataset, projects the overlap deviation span onto the target tolerance interval boundary to divide the boundary allowance, determines the corresponding falling node segment based on the boundary allowance, and generates the tolerance matching degree. The instruction construction submodule reads the driver overwrite protocol template in the tablet computer's storage medium, injects the tolerance matching degree into the driver overwrite protocol template to perform head and tail identifier additional encapsulation, extracts the associated payload bit sequence after the encapsulation operation, and constructs the clock overwrite instruction.

6. The control system based on small-pitch MiniLED display driving according to claim 1, characterized in that, The period determination module includes: The sequence construction submodule obtains the tablet computer hardware communication bus transmission configuration according to the clock overwrite instruction, collects the refresh cycle constant in the memory, extracts the clock cycle change span in the tablet computer hardware communication bus transmission configuration, combines the clock cycle change span along the time reference axis to arrange normalized state points, and generates a beat fluctuation distribution sequence. The peak deviation submodule, based on the clock fluctuation distribution sequence, maps the refresh cycle constant in the memory to the clock fluctuation distribution sequence to extract the extreme peak nodes, and performs an absolute value difference operation between the extreme peak nodes and the clock cycle change span to obtain the fluctuation deviation span. The boundary establishment submodule receives the fluctuation overflow reference value in the preset test sample set based on the fluctuation deviation span, compares the fluctuation deviation span with the fluctuation overflow reference value to define the tolerance distribution extreme value term, multiplies the tolerance distribution extreme value term by the compensation multiplier to extract the incremental scale, and establishes the period extension boundary.

7. The control system based on small-pitch MiniLED display driving according to claim 1, characterized in that, The voltage drop control module includes: The mapping construction submodule collects a preset voltage drop conversion constant and a reference voltage scale, and divides the preset voltage drop conversion constant and the reference voltage scale into a two-dimensional spatial array to divide the grid blocks. It then establishes a voltage drop feature mapping map by combining the boundary points of the grid blocks. The gradient extraction submodule projects the coordinates of the intersection center node of the periodic extension boundary into the pressure drop feature map, extracts the tangent value of the tangent along the tangent direction associated with the intersection center node coordinates, and generates the pressure drop associated gradient rate. The bias calculation submodule monitors the initial bias configuration constant within the solid-state storage medium, calculates the distributed bias quantization step size by combining the voltage drop-related gradient rate, and performs stepwise numerical reduction based on the distributed bias quantization step size and a decreasing iterative operation to obtain the bias reduction target.

8. The control system based on small-pitch MiniLED display driving according to claim 7, characterized in that, The formula for calculating the distributed bias quantization step size is: ； in, Represents the distribution bias quantization step size. This represents the initial bias configuration constant. Index identifiers representing different regions within a group of storage units. This represents the total number of regions divided within a group of storage cells. Representing the Normalized weighting coefficients for each region in the pressure drop distribution Representing the The measured pressure drop fluctuation amplitude of each region within the current iteration cycle. This represents the standard deviation of the measured pressure drop fluctuation amplitude across all regions within the current iteration period. This represents the average value of the measured pressure drop fluctuation amplitude across all regions within the current iteration period.

9. The control system based on small-pitch MiniLED display driving according to claim 1, characterized in that, The drive control module includes: The voltage extraction submodule obtains the reference bias voltage of the tablet computer, extracts the corresponding surplus parameter by subtracting the reference bias voltage of the tablet computer from the value of the bias reduction target execution node, and defines the basic mapping span range by combining the unidirectional corresponding surplus parameter distribution to generate the bias associated voltage distribution segment. The surplus removal submodule extracts the preset fault tolerance fluctuation threshold limit, compares the bias associated voltage distribution segment with the fault tolerance fluctuation threshold limit to calibrate the surplus road segment node, removes the surplus road segment node and extracts the associated state retention item to obtain the retained and adapted road segment set. The recording generation submodule monitors the underlying communication instruction header protocol in the tablet computer register, injects the reserved adaptation segment set into the underlying communication instruction header protocol to perform bit-width overlapping encapsulation operation, combines and outputs a full-width overlapping encapsulation sequence, and generates a small-pitch MiniLED display driver tablet computer control record.

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