CN116704962A

CN116704962A - Backlight partition control system based on FPGA

Info

Publication number: CN116704962A
Application number: CN202310757965.4A
Authority: CN
Inventors: 刘园; 曾省金; 梁杰
Original assignee: Shenzhen Xinhuiquan Technology Co ltd
Current assignee: Shenzhen Xinhuiquan Technology Co ltd
Priority date: 2023-06-26
Filing date: 2023-06-26
Publication date: 2023-09-05

Abstract

The invention relates to the technical field of embedded systems, and discloses a backlight partition control system based on an FPGA, wherein the control system comprises: the FPGA chip is a programmable logic device; the backlight module is a backlight source of the display screen; the control algorithm module is responsible for calculating the brightness setting of each backlight partition according to the input signals and the environment data; the input interface module receives the control signal and the environmental data; an output interface module in communication with the backlight module; the logic design module realizes the function of controlling backlight partition; the programming configuration module burns the written logic codes into the FPGA chip and configures the logic codes; the power module is used for providing required power voltage and current for the FPGA chip and the backlight module; the invention has the beneficial effects of flexibility, configurability, high integration, instantaneity, responsiveness, energy conservation, expandability and simplified and accelerated hardware design, and provides better control and use experience for display equipment and users.

Description

Backlight partition control system based on FPGA

Technical Field

The invention relates to the technical field of embedded systems, in particular to a backlight partition control system based on an FPGA.

Background

The backlight partition control system based on the FPGA is a control system for display equipment, and the optimization and individuation of the display effect are realized by adjusting the brightness of backlight and controlling the backlight partition. Backlight partition control systems are widely used in electronic products such as liquid crystal displays, televisions and the like, and can provide better visual experience and energy efficiency.

Conventional backlight control systems use dedicated control chips or microcontrollers to implement brightness adjustment and zone control. These controllers typically have fixed functionality and limited flexibility and cannot meet the needs of personalized and diversified displays. In addition, they may require additional external circuitry to connect the various partitions, adding to the complexity of design and routing.

Currently, the existing controller generally has fixed functions and settings, so that the personalized requirements of different scenes and applications are difficult to meet, and the control strategy for adjusting and changing the backlight partition may need to redesign a hardware circuit, so that the flexibility of the control system is limited, and the use requirements of people are difficult to meet.

Disclosure of Invention

The invention provides a backlight partition control system based on an FPGA, which is used for solving the technical problems in the background technology.

The invention provides the following technical scheme: an FPGA-based backlight partition control system, the control system comprising:

the FPGA chip is a programmable logic device and has high flexibility and programmability;

the backlight module is a backlight source of the display screen;

the control algorithm module is responsible for calculating the brightness setting of each backlight partition according to the input signals and the environment data;

the input interface module, the FPGA system can include various input interfaces, is used for receiving control signals and environmental data;

the output interface module selects a proper output interface protocol to communicate with the backlight module, so that the FPGA chip is ensured to support the selected output interface;

the logic design module is used for writing FPGA logic codes by using a hardware description language to realize a backlight partition control function;

the programming configuration module uses an FPGA development tool to burn the written logic codes into an FPGA chip and configure the logic codes;

and the power supply module is used for designing a proper power supply management circuit to provide required power supply voltage and current for the FPGA chip and the backlight module.

Preferably, the design and characteristics of the backlight module are customized according to the requirements and application requirements of the display screen, including:

The brightness range is enough for the backlight module to meet the brightness requirements of the display screen in different environments;

uniformity, the backlight module provides uniform brightness distribution to ensure uniform brightness of images on the display screen;

the backlight module supports the dimming function so as to adjust the brightness of the backlight according to the requirement;

the energy-saving performance is achieved, and the backlight module has high energy efficiency so as to reduce energy consumption and heat generation;

the backlight module has longer service life and stable performance so as to ensure reliable operation of the display screen.

Preferably, the control algorithm module is responsible for calculating the brightness setting of each backlight partition according to the input signal and the environmental data, and the control algorithm comprises:

an image content adjusting algorithm for adjusting the backlight partition according to the real-time image content so as to improve the contrast and the display quality;

the ambient light sensing algorithm detects ambient brightness by utilizing a photosensitive sensor and other ambient sensors, and automatically adjusts the backlight according to the ambient brightness;

and a user setting algorithm for providing a user interface and an interface, wherein the user manually adjusts the brightness setting of the backlight partition to meet personal preference.

Preferably, the input interface module includes:

the analog input interface is used for receiving analog signals and comprises an analog-to-digital conversion (ADC) module, converting the analog signals into digital signals through the ADC module and transmitting the digital signals to the FPGA chip for processing;

the digital input interface is used for receiving the digital signals and transmitting the digital signals to the FPGA chip for processing;

the communication interface is used for communicating with other devices and systems and comprises a serial interface, a control interface and a control interface, wherein the serial interface is used for receiving control signals and environment data, and the communication interface exchanges data with external devices, sensors, computers and other embedded systems;

and the user interface is used for interacting with a user to receive input commands, setting parameters and displaying system states of the user.

Preferably, the output interface module is configured to communicate with a backlight module, and includes:

PWM (pulse width modulation) output, which is a method of controlling a level by adjusting the width of a pulse;

I2C (two-wire serial bus) output, I2C is a common serial communication protocol, and is suitable for communication with various external devices;

SPI (serial peripheral interface) output, SPI is a rapid serial communication protocol for data exchange with external devices;

UART (universal asynchronous receiver transmitter) output, a commonly used serial communication protocol, is used for data transmission with computers and other devices.

Preferably, the logic design module comprises the following design steps:

s1: determining a backlight partition control function: the functional requirements of the backlight partition control system need to be clarified;

s2: designing backlight partition control logic: according to the function requirement, writing logic codes by using a hardware description language to realize the control logic of the backlight partition;

s3: realizing a brightness adjustment algorithm: according to the design of the control algorithm module, the brightness adjustment algorithm is realized as a logic code;

s4: connecting an input interface module and an output interface module: connecting an input interface module and an output interface module with the backlight partition control logic;

s5: simulation and debugging: after the writing of the hardware description language is completed, simulation and debugging are carried out to verify the correctness and the functionality of the logic design;

s6: and (3) synthesis and realization: and integrating and realizing the logic codes, and burning the logic codes into an FPGA chip.

Preferably, the operation steps of the programming configuration module are as follows:

s1: writing logic codes: writing logic codes by using a hardware description language to realize a backlight partition control function;

S2: FPGA development tool selection: selecting a proper FPGA chip and a development tool;

s3: and (3) synthesis and realization: using the synthesis and realization functions in the FPGA development tool, converting the logic codes into a low-level logic netlist which can be understood by the FPGA chip, and mapping the logic codes to programmable logic units and internal connection resources of the FPGA chip;

s5: generating a bit stream file: after the integration and implementation are completed, the FPGA development tool generates a bit stream (bitstream) file;

s5: and connecting an FPGA chip: connecting the FPGA chip with a computer or a programming tool;

s6: burning a bit stream file: using the programming function of the FPGA development tool, burning the generated bit stream file into an FPGA chip;

s7: configuration verification: after the burning is completed, configuration verification is performed to ensure that the FPGA chip is correctly configured.

Preferably, the power module plays a key role in the backlight partition control system based on the FPGA, and the requirements of the power module are as follows:

and (3) power supply demand analysis: analyzing power supply requirements of the FPGA chip and the backlight module, including working voltage and current requirements;

stability of supply voltage: in order to ensure the normal operation of the FPGA chip and the backlight module, the power supply voltage should have good stability;

Power supply current capacity: selecting proper power supply current capacity according to the maximum working current requirements of the FPGA chip and the backlight module;

power supply filtering and decoupling capacitance: to reduce noise and interference in the power supply, power supply filter capacitors and decoupling capacitors are used;

and (3) power protection: in order to ensure the safety and reliability of the system, the power module comprises a power overvoltage protection mechanism, an overcurrent protection mechanism and a short-circuit protection mechanism;

PCB layout and power distribution: in PCB design, power supply lines and power planes are rationally laid out to reduce power supply noise and interference.

Preferably, the control system further comprises an integrated test module and a performance optimization module;

the integrated test module is used for performing system-level integrated test after hardware design and FPGA programming are completed, and verifying the functions and performances of the backlight partition control system;

the testing steps of the integrated testing module are as follows:

s1: determining a test target: the aim and the requirement of the integrated test are clear;

s2: writing a test case: writing test cases according to the test targets, and covering various aspects and functions of the system;

s3: constructing a testing environment: preparing a test environment, including connecting an FPGA system with a backlight module and preparing proper input signals and environment data;

S4: executing the test case: executing the test cases one by one according to the test plan;

s5: recording and analyzing the test results: recording key data and results in the test process;

s6: troubleshooting and repair: problems or faults are found in the test, and the faults are removed and repaired;

s7: repeating the test and verification: after the problem is repaired, the test case is rerun to verify the repair effect.

Preferably, the performance optimization module performs performance optimization on the system according to actual application requirements;

the performance optimization module comprises:

logic optimization: the FPGA logic codes are optimized, so that the use of logic resources and path delay are reduced, and the performance of the system is improved;

parallel processing: the parallel computing capability of the FPGA is utilized to decompose the task into a plurality of parallel subtasks, and the subtasks are executed simultaneously in different clock cycles, so that the processing speed of the system is increased;

memory optimization: for data needing to be stored in a large amount, adopting a proper memory structure and algorithm to improve the efficiency and throughput of memory access;

timing constraint optimization: through optimizing time sequence constraint, the FPGA chip can better meet the time sequence requirement, reduce path delay and improve clock frequency;

Resource sharing and multiplexing: the resource sharing and multiplexing characteristics of the FPGA are reasonably utilized, so that the use amount of resources is reduced;

data stream optimization: the throughput and the efficiency of the data stream are improved by optimizing the transmission and the processing modes of the data stream;

parallel communication interface: an appropriate parallel communication interface protocol is selected to increase the speed and efficiency of communication with the backlight module.

The invention has the following beneficial effects:

(1) Flexibility and configurability: the FPGA chip has programmability, can realize different backlight partition control functions according to specific requirements, and can be easily adapted to different backlight partition layouts and control requirements through programming and configuration.

(2) High integration and reliability: the FPGA chip can integrate a plurality of modules and functions, realizes each component part of the backlight partition control system, reduces the complexity of hardware and the number of components, and improves the reliability of the system.

(3) Real-time and responsiveness: by using the FPGA chip to carry out hardware logic design and programming, the backlight partition control system can realize real-time backlight brightness adjustment and control and has the characteristics of quick response and high accuracy.

(4) Flexible backlight control: the programmability of the FPGA chip enables the control of backlight subareas to be more flexible, the brightness of each subarea can be adjusted according to different requirements, and diversified backlight effects and display effects are realized.

(5) Energy saving and power consumption optimization: by optimizing logic design, memory access, parallel processing and other technologies, the backlight partition control system can realize energy conservation and power consumption optimization, improve the energy efficiency of the system, prolong the service life of a battery or reduce the energy consumption.

(6) System performance and scalability: through performance optimization and logic design optimization, the backlight partition control system can realize high-performance backlight control, provide high-quality user experience, and meanwhile, the FPGA-based system has expandability, and more backlight partitions or other functional modules can be added as required.

(7) Simplification and acceleration of hardware design: the FPGA chip can simplify the hardware design process, reduce the number and complexity of components on a circuit board, and in addition, the programmability and parallel computing capability of the FPGA chip can accelerate the development process and shorten the time of product marketing.

In general, the FPGA-based backlight partition control system has the beneficial effects of flexibility, configurability, high integration, instantaneity, responsiveness, energy conservation, expandability and simplified acceleration hardware design, and provides better control and use experience for display equipment and users.

Drawings

FIG. 1 is a schematic flow diagram of a control system according to the present invention;

FIG. 2 is a schematic diagram of a backlight module according to the present invention;

FIG. 3 is a schematic diagram of a control algorithm module according to the present invention;

FIG. 4 is a schematic diagram of an input interface module according to the present invention;

FIG. 5 is a schematic diagram of an output interface module according to the present invention;

FIG. 6 is a schematic diagram of a logic design module according to the present invention;

FIG. 7 is a schematic diagram of a programming configuration module of the present invention;

FIG. 8 is a schematic diagram of a power module according to the present invention;

FIG. 9 is a schematic diagram of an integrated test module according to the present invention;

FIG. 10 is a schematic diagram of a performance optimization module according to the present invention.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Examples

Referring to fig. 1-10, an FPGA-based backlight partition control system, the control system includes:

the FPGA chip is a programmable logic device and has high flexibility and programmability; consists of a large number of logic units (logic gates) and programmable internal connection wires, and can be programmed and configured according to the requirements of designers; the programmability, flexibility and parallel processing capability of the FPGA chip make the FPGA chip an important tool in various application fields, and in the backlight partition control system, the programmability of the FPGA chip enables the FPGA chip to realize control logic of backlight partition according to requirements, and provides high-performance and real-time processing capability.

The backlight module is a backlight source of the display screen; the design and characteristics of the backlight module are customized according to the requirements and application requirements of the display screen, and the design and characteristics comprise:

the backlight module has enough brightness range to meet the brightness requirements of the display screen in different environments, so that the display screen can still have enough visibility in bright outdoor environments, and meanwhile, the glare problem caused by too high brightness is avoided in low-illumination environments.

The uniformity, the backlight module provides uniform brightness distribution to ensure uniform brightness of the image on the display screen, which is very important for the viewing experience of the display screen, and avoids the problem of image quality caused by uneven brightness or too fast brightness decay.

The dimming function is supported by the backlight module, so that the brightness of the backlight can be adjusted according to the requirement, a user can adjust the brightness level of the display screen according to the ambient lighting condition or personal preference, and a more comfortable and satisfactory display effect is provided.

The backlight module has higher energy efficiency to reduce energy consumption and heat generation, which has positive effects on prolonging the service time of the display screen, reducing the energy cost and reducing the heat emission, and is more important for mobile equipment and portable display screens.

The backlight module has long service life and stable performance, and the display screen usually needs to run continuously for a long time, so the backlight module should have durability and stable performance to ensure reliable running of the display screen, which is critical for reducing maintenance and replacement cost, improving user satisfaction and prolonging the service life of the display screen.

By designing the backlight module meeting the display screen requirements and application demands, good brightness range, brightness uniformity, dimming function, energy saving performance, long service life and reliability can be realized, thereby providing high-quality display effect and user experience.

The control algorithm module is responsible for calculating the brightness setting of each backlight partition according to the input signals and the environment data; the control algorithm comprises the following steps:

the image content adjusting algorithm adjusts the backlight subareas according to the real-time image content so as to improve the contrast and the display quality, and can automatically adjust the brightness of the backlight subareas according to the brightness requirements of different areas in the image, so that the image can show good visual effects in different scenes.

The ambient light sensing algorithm utilizes a photosensitive sensor and other ambient sensors to detect ambient brightness and automatically adjusts backlight according to the ambient brightness, so that the display screen can adaptively adjust backlight brightness according to brightness changes of surrounding environments, and consistency and visibility of display effects are ensured.

The user sets the algorithm, provides user interface and interface, the user adjusts the brightness setting of the backlight subarea manually to meet personal preference, the user can adjust the backlight brightness according to own preference and vision requirement, and more comfortable and satisfactory display effect is obtained.

The application of the control algorithm module can improve the display quality, adapt to environmental changes and meet personalized requirements, thereby providing better visual effect and user experience.

The input interface module, the FPGA system can include various input interfaces, is used for receiving control signals and environmental data; the input interface module includes:

the analog input interface is used for receiving analog signals, comprises an analog-to-digital conversion (ADC) module, converts the analog signals into digital signals through the ADC module, and transmits the digital signals to the FPGA chip for processing, so that signals from an analog sensor or external equipment, such as brightness information of an ambient light sensor, can be received, and intelligent adjustment of backlight partition is realized.

The digital input interface is used for receiving the digital signals and transmitting the digital signals to the FPGA chip for processing, so that the signals from the digital sensor, the digital interface device or other digital sources, such as ambient temperature, humidity and other data, can be received for analysis and backlight adjustment in the control algorithm.

The communication interface is used for communicating with other devices and systems and comprises a serial interface for receiving control signals and environment data, the communication interface exchanges data with external devices, sensors, computers and other embedded systems, and the control signals and the environment data can be received through communication protocols such as the serial interface, so that information transmission and cooperative control among the systems are realized, and further higher-level backlight partition control and integration are realized.

The user interface is used for interacting with a user to receive input commands, setting parameters and display system states of the user, and the user can conveniently adjust brightness setting of the backlight subarea and select different display modes or operation modes through the user interface, so that a more visual and operable mode is provided for customizing and controlling the backlight system.

The application of the input interface module can realize the effects of real-time data acquisition (an analog input interface and a digital input interface can acquire real-time environment data and control signals, so that the system can make corresponding backlight adjustment according to the latest input information), multi-device interconnection (a communication interface allows data exchange with external devices and the system, realizes linkage and cooperative control with other devices, provides richer backlight control functions) and user customization (a user interface enables a user to customize the brightness setting and display modes of backlight partitions in an interactive mode, and meets the requirements and preferences of different users), thereby improving the functions and the flexibility of the backlight partition control system.

The output interface module selects a proper output interface protocol to communicate with the backlight module, so that the FPGA chip is ensured to support the selected output interface; the output interface module is used for communicating with the backlight module, and comprises:

PWM (pulse width modulation) output, which is a method of controlling a level by adjusting the width of a pulse; in the backlight partition control system, the level is controlled by adjusting the width of the pulse, and the FPGA chip can generate PWM signals for adjusting the brightness of each backlight partition.

I2C (two-wire serial bus) output, I2C is a common serial communication protocol, and is suitable for communication with various external devices; in the backlight partition control system, by using the I2C output interface, the FPGA chip can send brightness setting and control signals to the backlight module, so that reliable communication with the backlight module is realized.

SPI (serial peripheral interface) output, SPI is a rapid serial communication protocol for data exchange with external devices; in the backlight partition control system, through an SPI output interface, an FPGA chip can transmit brightness setting and control signals, and high-speed communication is carried out with a backlight module, so that quick backlight control is realized.

UART (universal asynchronous receiver transmitter) output, UART is a commonly used serial communication protocol for data transmission with computers and other devices; in the backlight partition control system, through a UART output interface, an FPGA chip can send brightness setting and control signals, and perform reliable data exchange with a backlight module and other devices to realize communication between systems.

The flexibility (the compatibility of the FPGA chip and the backlight module can be ensured by selecting a proper output interface protocol, so that the system has greater flexibility and expandability), the accurate control (PWM output and other serial communication protocols can provide accurate backlight control, the brightness setting of each backlight partition can meet the requirements and realize better display effect), the rapid communication (high-speed serial communication protocols such as SPI and UART can realize rapid data transmission, the timeliness and accuracy of backlight control signals are ensured) and the interaction with external equipment (the data exchange with other external equipment can be realized by the communication interface protocol, and the integration and linkage control of the system are realized), and the function and the performance of the backlight partition control system are improved.

The logic design module is used for writing FPGA logic codes by using a hardware description language to realize a backlight partition control function; the design steps of the logic design module are as follows:

s1: determining a backlight partition control function: the functional requirements of the backlight partition control system need to be clarified; by specifying functional requirements, it is possible to ensure that the logic design meets system requirements and provides the required control capabilities.

S2: designing backlight partition control logic: according to functional requirements, logic code is written using a hardware description language (e.g., verilog or VHDL) to implement control logic for backlight partitions, and the logic design module will determine how to calculate the brightness settings for each backlight partition based on the input signals and the environmental data.

S3: realizing a brightness adjustment algorithm: according to the design of the control algorithm module, the brightness adjustment algorithm is realized as a logic code; this includes adjusting backlight partitioning based on real-time image content, automatically adjusting backlight using ambient light sensing algorithms, manually adjusting in response to user settings, and so forth.

S4: connecting an input interface module and an output interface module: connecting an input interface module and an output interface module with the backlight partition control logic; this ensures that the input signal and the ambient data can be passed to the logic module and the brightness setting is transmitted to the backlight module.

S5: simulation and debugging: after the writing of the hardware description language is completed, simulation and debugging are carried out to verify the correctness and the functionality of the logic design; through simulation testing, the expected behavior of the logic design can be verified, and necessary adjustments and corrections can be made.

S6: and (3) synthesis and realization: and integrating and realizing the logic codes, and burning the logic codes into an FPGA chip. The synthesis process converts the logic code into the actual hardware configuration and generates a bit stream file that can be configured to the FPGA chip. Through the implementation process, the logic design is converted into a hardware circuit that can run on the FPGA.

The logic design module through the steps has the following advantages:

the system functions are realized: the logic design module ensures that the backlight partition control system achieves the required functions, such as adjusting backlight brightness according to input signals and environment data, automatically adjusting backlight, responding to user settings and the like;

hardware programmability: the programmable logic characteristics of the FPGA chip enable the logic design module to have high flexibility and customizable, and can meet different application requirements;

accurate control and regulation: the logic design module can accurately calculate the brightness setting of each backlight partition according to an algorithm and input signals, and accurate backlight control and adjustment are realized;

Optimizing system performance: through the logic design module, the performance of the system can be optimized according to the actual application requirements, such as reducing power consumption, improving response speed and the like.

The programming configuration module uses an FPGA development tool to burn the written logic codes into an FPGA chip and configure the logic codes; the operation steps of the programming configuration module are as follows:

s1: writing logic codes: writing logic codes by using a hardware description language to realize a backlight partition control function; the logic code should include backlight partition control logic and the required input/output interfaces.

S2: FPGA development tool selection: selecting a proper FPGA chip and a development tool; common FPGA development tools include Xilinx Vivado, altera quatus, etc.

s5: generating a bit stream file: after the integration and implementation are completed, the FPGA development tool generates a bit stream (bitstream) file; wherein the bitstream file is a binary file containing configuration information describing how the logic netlist is configured onto the FPGA chip.

S5: and connecting an FPGA chip: connecting the FPGA chip with a computer or a programming tool; connection is typically made using an interface such as JTAG (Joint Test Action Group) or USB.

S6: burning a bit stream file: using the programming function of the FPGA development tool, burning the generated bit stream file into an FPGA chip; the programming process transmits the bit stream file to a non-volatile memory (e.g., configuration memory) of the FPGA chip to enable configuration of the FPGA chip.

S7: configuration verification: after the burning is completed, performing configuration verification to ensure that the FPGA chip is correctly configured; the correctness of the configuration can be verified by reading the status register of the FPGA chip, checking the output signal or performing a functional verification.

The programming configuration module realizes the process of programming the logic design into the FPGA chip and configuring the logic design, and has the following advantages:

the system functions are realized: by burning the logic codes to the FPGA chip, the function of the backlight partition control system is realized.

Flexibility and reconfigurability: the characteristics of the FPGA chip enable the logic design to be flexibly adjusted and modified so as to meet different requirements, and the reconfiguration of the system can be realized by re-burning the bit stream file.

Configuration verification and debugging: the configuration verification process ensures that the FPGA chip has been properly configured and can be further debugged and verified to ensure the correctness and performance of the system.

Development efficiency is improved: the FPGA development tool and the programming function are used, so that the development and deployment process of logic design is simplified, and the development efficiency is improved.

The power module is used for designing a proper power management circuit to provide required power voltage and current for the FPGA chip and the backlight module; the power module plays a key role in the backlight partition control system based on the FPGA, and the requirements of the power module are as follows:

and (3) power supply demand analysis: analyzing power supply requirements of the FPGA chip and the backlight module, including working voltage and current requirements; by accurately analyzing the power supply requirements, appropriate power supply voltages and currents can be selected to meet the stability and reliability requirements of the system.

Stability of supply voltage: in order to ensure the normal operation of the FPGA chip and the backlight module, the power supply voltage should have good stability; the stable power supply voltage can prevent unstable or unexpected problems in the working process of the system and provide stable power support.

Power supply current capacity: selecting proper power supply current capacity according to the maximum working current requirements of the FPGA chip and the backlight module; ensuring that the power module can provide enough current supply to meet the requirements of the system and prevent the system from being failed or unstable due to insufficient current.

Power supply filtering and decoupling capacitance: to reduce noise and interference in the power supply, power supply filter capacitors and decoupling capacitors are used; the capacitors can filter high-frequency noise in the power supply, provide stable power supply for the FPGA chip and the backlight module, and improve the anti-interference performance of the system.

And (3) power protection: in order to ensure the safety and reliability of the system, the power module comprises a power overvoltage protection mechanism, an overcurrent protection mechanism and a short-circuit protection mechanism; the protection mechanisms can timely detect and respond to abnormal conditions, and prevent damage to systems and equipment caused by overvoltage, overcurrent or short circuit of a power supply.

PCB layout and power distribution: in the design of the PCB, the power supply circuit and the power supply plane are reasonably arranged to reduce power supply noise and interference; good PCB layout and power distribution can reduce impedance, inductance and noise sensitivity of power lines, and improve stability and anti-interference capability of the system.

By concealing the above required power supply module, the following advantages are achieved:

system stability and reliability: the stable supply voltage and current supply can ensure the normal operation of the FPGA chip and the backlight module, and improve the stability and reliability of the system.

Anti-interference performance: the power supply filtering and decoupling capacitor can reduce noise and interference in the power supply, improve the anti-interference performance of the system and ensure the accuracy and reliability of signals.

System security: the power protection mechanism can effectively protect the system and the equipment from damage caused by overvoltage, overcurrent, short circuit and other problems of the power supply, and improves the safety and the stability of the system.

Optimizing the power supply layout: the reasonable PCB layout and power distribution can reduce the impedance and noise sensitivity of the power circuit, reduce the power noise and interference, and improve the performance and reliability of the system.

The control system also comprises an integrated test module and a performance optimization module;

the testing steps of the integrated testing module are as follows:

s1: determining a test target: the aim and the requirement of the integrated test are clear; the range, function and performance indicators of the test are determined to ensure the comprehensiveness and accuracy of the test.

S2: writing a test case: writing test cases according to the test targets, and covering various aspects and functions of the system; test cases should include various scenarios and boundary conditions to verify the behavior and response of the system under different conditions.

S3: constructing a testing environment: preparing a test environment, including connecting an FPGA system with a backlight module and preparing proper input signals and environment data; the test environment is ensured to be similar to the actual application environment, so that a real test result is obtained.

S4: executing the test case: executing the test cases one by one according to the test plan; each functional module of the system is tested, including input interfaces, output interfaces, control logic, etc., to verify that the function and performance of the system are in compliance with expectations.

S5: recording and analyzing the test results: recording key data and results in the test process; the test results are analyzed and compared to evaluate the performance and stability of the system and to find possible problems or room for improvement.

S6: troubleshooting and repair: problems or faults are found in the test, and the faults are removed and repaired; by locating the root cause of the problem, the necessary modifications and adjustments are made to ensure that the system is functioning properly.

S7: repeating the test and verification: after the problem is repaired, the test case is rerun to verify the repairing effect; the test steps are repeated until the functionality and performance of the system are expected and stability and reliability of the system in each case are ensured.

Through carrying out integrated test module, have following advantage:

and (3) functional verification: by executing the test cases, whether each functional module of the system works according to expectations is verified, and the system is ensured to meet requirements and specifications.

Performance evaluation: by recording and analyzing the test results, the performance indexes of the system, such as response time, throughput and the like, are evaluated to ensure that the system can meet the requirements in practical application.

Troubleshooting and repair: by finding and solving the problems, the stability and reliability of the system are improved, and the probability of fault occurrence is reduced.

Optimizing and improving: through repeated tests and verification, potential problems and improvement space of the system are found, the design and performance of the system are optimized, and the overall quality is improved.

The performance optimization module is used for optimizing the performance of the system according to actual application requirements; the performance optimization module comprises:

logic optimization: the FPGA logic codes are optimized, so that the use of logic resources and path delay are reduced, and the performance of the system is improved; the optimized logic design can enable the system to work at a higher clock frequency, and the resources of the FPGA chip can be utilized more effectively.

Parallel processing: the parallel computing capability of the FPGA is utilized to decompose the task into a plurality of parallel subtasks, and the subtasks are executed simultaneously in different clock cycles, so that the processing speed of the system is increased; by parallel processing, a plurality of data or tasks can be processed simultaneously, and the throughput and response speed of the system are improved.

Memory optimization: for data needing to be stored in a large amount, adopting a proper memory structure and algorithm to improve the efficiency and throughput of memory access; optimizing the access mode of the memory can reduce access delay and improve the efficiency of data reading and writing.

Timing constraint optimization: through optimizing time sequence constraint, the FPGA chip can better meet the time sequence requirement, reduce path delay and improve clock frequency; optimizing timing constraints can improve the transmission speed and stability of signals, thereby improving the performance and reliability of the system.

Resource sharing and multiplexing: the resource sharing and multiplexing characteristics of the FPGA are reasonably utilized, so that the use amount of resources is reduced; by sharing and multiplexing resources, the consumption of logical resources can be reduced and the efficiency and capacity utilization of the system can be improved.

Data stream optimization: the throughput and the efficiency of the data stream are improved by optimizing the transmission and the processing modes of the data stream; optimizing the data flow may reduce delays in data transmission and enable data to flow in a smoother manner in the system, thereby improving performance of the system.

Parallel communication interface: selecting proper parallel communication interface protocol to raise communication speed and efficiency with back light module; by adopting the high-speed parallel communication interface, the rapid and reliable data transmission can be realized, and the response speed and the communication efficiency of the system are improved.

By implementing the performance optimization module, the method has the following advantages:

improving the system performance: the processing capacity, throughput and response speed of the system are improved through optimizing logic, parallel processing, memory access and other aspects, and the performance requirements of practical application are met.

And (3) reducing power consumption: by optimizing logic design and resource utilization, power consumption is reduced, energy efficiency of the system is improved, battery life is prolonged or energy consumption is reduced.

Reliability is improved: by optimizing time sequence constraint, data flow, communication interface and other aspects, the stability and reliability of the system are improved, and errors and faults are reduced.

Improving design maintainability: by optimizing logic codes, resource allocation, data flow design and the like, the structure and design of the system are simplified, and the maintainability and expandability of the system are improved.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the scope of the invention.

Claims

1. An FPGA-based backlight partition control system, wherein the control system comprises:

the backlight module is a backlight source of the display screen;

2. The FPGA-based backlight partition control system of claim 1, wherein: the design and characteristics of the backlight module are customized according to the requirements and application demands of the display screen, and the backlight module comprises:

3. The FPGA-based backlight partition control system of claim 1, wherein: the control algorithm module is responsible for calculating the brightness setting of each backlight partition according to the input signals and the environment data, and the control algorithm comprises:

4. The FPGA-based backlight partition control system of claim 1, wherein: the input interface module includes:

5. The FPGA-based backlight partition control system of claim 1, wherein: the output interface module is used for communicating with the backlight module, and comprises:

6. The FPGA-based backlight partition control system of claim 1, wherein: the design steps of the logic design module are as follows:

7. The FPGA-based backlight partition control system of claim 1, wherein: the operation steps of the programming configuration module are as follows:

8. The FPGA-based backlight partition control system of claim 1, wherein: the power module plays a key role in a backlight partition control system based on an FPGA, and the requirements of the power module are as follows:

9. The FPGA-based backlight partition control system of claim 1, wherein: the control system also comprises an integrated test module and a performance optimization module;

the testing steps of the integrated testing module are as follows:

10. The FPGA-based backlight partition control system of claim 9, wherein: the performance optimization module is used for optimizing the performance of the system according to actual application requirements;

the performance optimization module comprises: