Power Line Communication Circuit High-Speed Mode Switching
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Solution Overview
Problem
Current power line communication (PLC) technologies face limitations in achieving high-speed data transfer due to speed constraints, which hinders fast firmware updates and other high-bandwidth applications, particularly in wearable device charging systems.
Innovation Solution
An electronic device equipped with a power line communication circuit that includes a power line switch and a pull-up resistance, controlled by a processor to switch between low-speed and high-speed communication modes by blocking electrical coupling and connecting the POGO output node to a power supply voltage or ground voltage, enabling faster data transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If traditional power line communication is used, then communication stability is maintained, but data transfer speed is limited
Solution Approach 1:
The patent implements dynamic switching between low-speed and high-speed communication modes based on operational requirements. The power line switch dynamically reconfigures the circuit topology by connecting or disconnecting the pull-up resistance, enabling the system to adapt its communication speed according to the task at hand (e.g., firmware updates require high speed while general communication maintains stability).
Solution Approach 2:
The invention changes the electrical parameters of the communication circuit by altering the circuit topology through the power line switch. When switching to high-speed mode, the pull-up resistance is disconnected, changing the voltage levels and signal characteristics to enable faster data transmission. This parameter change allows the same physical infrastructure to support multiple speed tiers.
2Productivity
If high-speed communication mode is activated, then data transfer speed increases significantly, but circuit configuration complexity increases
Solution Approach 1:
The communication circuit is segmented into distinct operational modes with clear separation between low-speed and high-speed configurations. The power line switch creates distinct circuit paths: in low-speed mode, the pull-up resistance is connected forming a standard PLC circuit; in high-speed mode, the pull-up resistance is disconnected creating a different topology. This segmentation allows each mode to be optimized independently while maintaining overall system coherence.
Solution Approach 2:
The power line switch acts as an intermediary element that mediates between the two communication modes. It is a simple, passive component that physically reconfigures the circuit without requiring complex control logic or additional active elements. The switch provides a clean, binary state transition between modes, simplifying the overall system architecture despite enabling high-speed operation.
Data Source
AI summary
An electronic device includes a power line communication circuit configured to perform power line communication with an external device, the power line communication circuit including: a power line switch provided between a regulator output node and a POGO output node; and a pull-up resistance provided between the POGO output node and a power supply voltage; and a processor configured to control the power line communication circuit, wherein the processor is further configured to: based on receiving a start signal instructing an initiation of high-speed communication, turn off the power line switch to block an electrical coupling between the regulator output node and the POGO output node, and perform the high-speed communication with the external device by connecting coupling the POGO output node to the power supply voltage through the pull-up resistance or connecting coupling the POGO output node to a ground voltage, based on according to output data.