Microcontroller Qi Modulation Processing for Accurate, Low-Resource Charging

The patent segments the modulation signal processing function into two parts: a hardware module for resource-intensive tasks (PWM generation, FSK/ASK modulation, timing control) and software for high-level protocol management. This segmentation allows the hardware to handle time-critical operations with dedicated resources while the software maintains flexibility for protocol adaptation, thereby resolving the contradiction between resource consumption and protocol adaptability.

The patent introduces a hardware module as an intermediary between the microcontroller software and the PWM output timer/ADC. This hardware intermediary handles the resource-intensive modulation signal processing, freeing software resources while maintaining protocol flexibility through configurable hardware parameters. The hardware module acts as a mediator that bridges the gap between software flexibility and hardware efficiency.

The patent segments the processing function so that time-critical modulation operations (PWM generation, frequency adjustment, ADC triggering) are handled by hardware with dedicated timing resources, while software handles higher-level protocol logic. This segmentation isolates precision-critical operations from software interruption variability, improving measurement precision while preserving protocol flexibility through software configurability.

The patent replaces software-based timing and modulation control with a dedicated hardware module that uses hardware timers and PWM generators. This substitution eliminates the sensitivity to software interruption times, as hardware timers run independently of software execution flow, thereby improving processing accuracy while the software retains protocol flexibility through parameter configuration.

The patent designs the hardware module to be multi-functional, supporting both FSK and ASK modulation modes, multiple PWM frequencies, and various ADC sampling configurations through configurable parameters. This universality allows a single hardware module to replace what would otherwise require multiple dedicated circuits, reducing overall device complexity while maintaining low resource consumption through efficient hardware utilization.

The patent employs parameter-based configuration to control hardware module behavior, allowing dynamic adjustment of modulation type, frequency, sampling rate, and protocol parameters without changing the hardware architecture. This parameter-driven approach enables a fixed hardware design to adapt to different protocols and requirements, reducing device complexity while maintaining resource efficiency.

The patent implements a self-service architecture where the modulation signal processing hardware module uses the microcontroller's existing PWM output timer and ADC resources without requiring external dedicated hardware. By making the system self-sufficient using integrated resources, the patent eliminates the need for expensive external modulation circuits and components, reducing manufacturing cost while maintaining charging performance through efficient resource utilization.

The patent makes the hardware module universal by supporting multiple modulation modes (FSK, ASK) and protocols through parameter configuration, allowing a single low-cost hardware design to replace multiple specialized circuits. This universality reduces the need for expensive protocol-specific hardware, lowering manufacturing costs while maintaining reliable wireless charging functionality across different standards.