Gaze Detection Power Management for Electronic Devices
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Solution Overview
Problem
Conventional portable electronic devices face challenges in conserving power, often turning off displays at inappropriate times or leaving them on unnecessarily, which affects battery life and user interaction.
Innovation Solution
Incorporating gaze detection capabilities using sensors like cameras to determine user attention, allowing the device to switch between active and standby modes, adjusting display brightness and power consumption accordingly, and using additional sensors to optimize power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If display screens are turned off to conserve power, then battery life is extended, but user interaction capability is reduced
Solution Approach 1:
The system uses gaze detection sensors to continuously monitor user attention and provides feedback to the power management system. When the sensor detects that the user is looking at the device, the display is activated or maintained at higher brightness. When the user looks away, the display is dimmed or turned off. This closed-loop feedback mechanism ensures the display is only active when needed, extending battery life while maintaining user interaction capability.
Solution Approach 2:
The display power state is made dynamic rather than static. The system transitions between multiple power states (fully on, dimmed, off) based on real-time gaze detection. This dynamic adjustment allows the display to adapt its power consumption level to actual usage conditions, resolving the contradiction between power conservation and user interaction readiness.
2Ease of operation
If display screens are kept on to maintain user interaction, then ease of operation is improved, but power consumption increases
Solution Approach 1:
Instead of keeping the display continuously on, the system uses periodic gaze detection to determine when activation is needed. The gaze detection sensor periodically checks for user attention, and the display is activated only during periods when user presence is detected. This periodic activation pattern maintains user interaction capability while significantly reducing overall power consumption compared to continuous operation.
3Volume of moving object
If miniaturization is applied to reduce device size, then portability is improved, but battery capacity is reduced
Solution Approach 1:
The system changes the operational parameters of the display and other components based on detected usage conditions. By using gaze detection to trigger different power consumption levels, the device can extend effective battery life beyond what would be available from the miniaturized battery alone. This parameter adjustment allows the device to maintain small form factor while achieving acceptable battery life through intelligent power management.
Data Source
AI summary
An electronic device may have gaze detection capabilities that allow the device to detect when a user is looking at the device. The electronic device may implement a power management scheme using the results of gaze detection operations. When the device detects that the user has looked away from the device, the device may dim a display screen and may perform other suitable actions. The device may pause a video playback operation when the device detects that the user has looked away from the device. The device may resume the video playback operation when the device detects that the user is looking towards the device. Gaze detector circuitry may be powered down when sensor data indicates that gazed detection readings will not be reliable or are not needed.