Wireless USB Power Notification to Prevent Data Corruption
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless USB systems face data corruption risks due to unexpected disconnections of client devices from host devices during data transfers, primarily caused by variations in the client's power supply leading to power failures.
Innovation Solution
The client device monitors its power supply and sends a low power notification to the host when its remaining capacity falls below a threshold, allowing the host to close the wireless connection before the power is exhausted, thereby preventing data corruption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the client device uses its own power supply in wireless USB systems, then the device can operate independently without wired power connection, but the system becomes vulnerable to power supply variations causing unexpected disconnections and data corruption
Solution Approach 1:
The host device performs preliminary actions by monitoring the client device's power supply status through notifications and proactively closing the wireless connection before power exhaustion occurs. This prevents unexpected disconnections and data corruption by acting in advance based on power status information.
Solution Approach 2:
The system implements feedback mechanisms where the client device sends power supply status notifications to the host device. The host device uses this feedback information to monitor power levels and take appropriate actions to maintain reliable data transfers throughout the connection lifecycle.
2Reliability
If the host device continuously polls client devices for power status, then the host can maintain awareness of power levels, but this increases system complexity and communication overhead
Solution Approach 1:
Instead of the host device polling client devices for power status (traditional approach), the invention inverts the approach by having client devices actively notify the host device of their power status. This reduces host device complexity and communication overhead while maintaining reliable power status awareness.
3Productivity
If the wireless connection remains open during low power conditions, then data transfer can continue, but the risk of unexpected disconnection and data corruption increases
Solution Approach 1:
The host device applies preliminary anti-action by closing the wireless connection in advance when low power conditions are detected through notifications. This prevents the harmful effect of unexpected disconnection and data corruption that would occur if the connection remained open during critical low power states.
Data Source
AI summary
There is provided a system for reducing the risk of data corruption occurring in wireless systems, by reducing the risk of an un-expected disconnection occurring between a client device (20; 52, 54, 56) and a host device (20; 50). The client device monitors its own power supply, and when the client device determines that its power supply capacity is almost exhausted, the client device sends a low power notification (5; 55) to the host device. The host device receives the low power notification, and in response closes the wireless connection to the client device, thereby preventing an unexpected disconnection from occurring when the clients power supply is finally exhausted.