Data Transfer Apparatus Dynamic USB Mode Switching
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Solution Overview
Problem
Conventional data transfer apparatuses, such as USB hubs, face challenges in reducing power consumption, especially when used with portable terminals and diverse host peers, as they often operate at unnecessarily high speeds, leading to increased power consumption and inefficiency across various applications.
Innovation Solution
A data transfer apparatus and system that dynamically switches between USB 3.0 and USB 2.0 communication modes based on network-side communication modes, using WiFi and WiGig, and stores negotiation information to avoid time-consuming re-negotiation during mode switching, allowing for efficient power management and broader application compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If data transfer apparatus operates at high speed (USB 3.0 mode), then data transfer rate is improved, but power consumption increases
Solution Approach 1:
The data transfer apparatus dynamically switches between USB 3.0 and USB 2.0 communication modes based on the network communication speed requirements. The communication mode is not fixed but adapts to changing conditions, allowing the system to operate at high speed when needed and low speed when power saving is prioritized, thus resolving the contradiction between transfer rate and power consumption
Solution Approach 2:
The invention changes the communication mode parameter (USB version) based on network communication conditions. By detecting the network communication speed and accordingly selecting USB 3.0 or USB 2.0 mode, the system adjusts its operational parameters to balance performance and power consumption requirements
2Use of energy by moving object
If communication mode switching is implemented, then power consumption is reduced, but communication mode switching time increases
Solution Approach 1:
The system performs preliminary detection of network communication speed before switching USB communication modes. By detecting the network communication conditions in advance and preparing for mode switching, the system minimizes the actual switching time and avoids abrupt transitions that would cause delays
Solution Approach 2:
The invention implements a feedback mechanism where the data transfer apparatus continuously monitors network communication speed and automatically adjusts USB communication mode accordingly. This closed-loop control ensures that mode switching occurs only when necessary and that the system responds efficiently to changing conditions, reducing unnecessary switching overhead
3Speed
If negotiation information is stored and reused, then switching speed is improved, but negotiation information storage requirement increases
Solution Approach 1:
The invention extracts and stores only the essential negotiation information needed for USB communication mode switching. By selectively storing only the critical parameters (such as negotiation results and mode settings) rather than complete communication protocols, the system achieves fast switching while minimizing storage requirements
Data Source
AI summary
A device apparatus carries out data transfer between a host-side device communication unit that supports a plurality of host-side communication modes and that communicates with a host apparatus and a device communication unit that supports a plurality of network-side communication modes respectively matching communication speeds of the plurality of host-side communication modes and that communicates with a communication device and switches a host-side communication mode that is used by the host-side device communication unit, in response to switching of a network-side communication mode that is used by the device communication unit.