Impedance Matching Circuit Control for Mobile Device Docking
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Solution Overview
Problem
Integrated circuit chips in mobile devices face challenges with impedance matching, leading to signal reflection at high speeds due to mismatching, which results in high current consumption and the need for deactivation in battery-driven devices to conserve power.
Innovation Solution
An impedance matching circuit in integrated circuit chips is activated or deactivated based on docking with an external device or the availability of external power, ensuring efficient signal transmission and reduced power consumption by adapting to the power source.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the impedance matching circuit is activated to ensure stable signal transmission at high speed, then signal transmission reliability is improved, but current consumption increases
Solution Approach 1:
The impedance matching circuit is designed to dynamically change its state based on operating conditions. The control circuit activates the impedance matching circuit only when high-speed signal transmission is required (such as during docking operations), and deactivates it during normal operations to reduce current consumption, thus resolving the contradiction between reliability and energy usage.
Solution Approach 2:
The system changes the impedance matching parameter state based on operational mode. By detecting docking status and power source conditions, the control circuit adjusts the impedance matching circuit's activation state, transitioning between matched and unmatched impedance states to optimize both signal reliability and power consumption according to current operational requirements.
2Use of energy by moving object
If the impedance matching circuit is deactivated to reduce current consumption in battery-driven devices, then energy efficiency is improved, but signal transmission stability deteriorates
Solution Approach 1:
The impedance matching circuit transitions from a static deactivated state to a dynamically controlled state. The control circuit monitors docking status and power source conditions, activating the impedance matching circuit only when both conditions indicate high-speed transmission is needed, thus maintaining energy efficiency while ensuring signal stability when required.
Solution Approach 2:
The control circuit performs preliminary detection of docking status and power source conditions before activating the impedance matching circuit. This preliminary action ensures that the impedance matching circuit is activated only when truly necessary, preventing unnecessary current consumption while maintaining signal transmission stability when high-speed operations are initiated.
Data Source
AI summary
A mobile device includes a docking unit for docking with an external device, and an integrated circuit chip including an impedance matching circuit for impedance matching of an internal bus outside of the integrated circuit chip, wherein activation or deactivation of the impedance matching circuit is determined based on whether the docking unit is docked.