Bi-directional Wireless Peripheral Power Management
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Solution Overview
Problem
Conventional wireless peripheral devices experience unnecessary power consumption due to undefined preset times for entering stand-by and power off modes, leading to reduced user satisfaction and battery life.
Innovation Solution
A bi-directional communication wireless peripheral device employs a power management apparatus with operational modes (initial, working, stand-by, and power off) and a wireless communication protocol to establish and maintain a link with the host, entering a power off mode when the link is broken, thereby reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If preset times T1 and T2 are defined too short for entering stand-by and power off modes, then power consumption is reduced, but the user may feel that the operation of the wireless peripheral device is not sensitive
Solution Approach 1:
The patent implements dynamic time adjustment where the preset times T1 and T2 are not fixed but are dynamically modified based on the operational state of the wireless link. When the wireless link is active, the device maintains longer timeout periods to ensure responsive operation. When the wireless link is lost or inactive, the device automatically shortens these timeout periods to minimize power consumption. This dynamic adaptation resolves the contradiction by allowing the system to optimize between responsiveness and power savings based on real-time conditions.
2Ease of operation
If preset times T1 and T2 are defined too long for entering stand-by and power off modes, then operation sensitivity is improved, but large power is consumed
Solution Approach 1:
The system dynamically adjusts the preset times T1 and T2 based on wireless link status. When the wireless link is lost, the device automatically reduces these timeout values, allowing it to transition to power-saving modes more quickly. This prevents the device from consuming large amounts of power while waiting for operations that cannot be received due to the lost link, thus resolving the contradiction between operation sensitivity and power consumption.
Solution Approach 2:
The patent employs feedback mechanisms where the device continuously monitors the wireless link status and uses this information to adjust its power management strategy. When link loss is detected, the system receives feedback that triggers a reconfiguration of the timeout parameters, reducing them to appropriate values that balance operational responsiveness with power conservation needs.
3Use of energy by moving object
If the wireless peripheral device enters power off mode immediately when communication link is lost, then power consumption is reduced, but the device requires faster response to re-establish communication
Solution Approach 1:
The patent implements a preliminary action by establishing monitoring mechanisms that detect wireless link loss conditions before they result in complete communication failure. Upon detecting link loss, the device proactively transitions to power-saving modes and adjusts its wake-up parameters in advance, ensuring it can quickly re-establish communication when the link is restored. This preliminary response resolves the contradiction by preparing the device to balance power savings with communication reliability.
Solution Approach 2:
The system dynamically adjusts its power management behavior based on the duration and characteristics of the link loss. For temporary link interruptions, the device may maintain a lighter sleep state with faster wake-up capability. For prolonged link loss, it transitions to deeper power-saving modes. This dynamic adaptation allows the device to optimize between power consumption and communication reliability based on real-time link conditions.
Data Source
AI summary
A power saving method of a bi-directional communication wireless peripheral device includes providing a wireless communication protocol between a host and the bi-directional communication wireless peripheral device; establishing a bi-directional communication wireless link between the host and the bi-directional communication wireless peripheral device through the wireless communication protocol; and enter a power off mode when the bi-directional communication wireless link does not exist.