Integrated Display Panel Human Presence Detection for Power Saving
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Solution Overview
Problem
Computing devices consume excessive energy when a user steps away or is no longer present, leading to wasteful energy consumption.
Innovation Solution
Integrate a human presence sensor (HPS) directly into the display panel, allowing it to communicate directly with the display SoC to adjust power states without host OS intervention, enabling efficient power management by detecting user presence or absence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the display panel remains in high power state to ensure immediate responsiveness to user interaction, then user experience is improved, but energy consumption increases
Solution Approach 1:
The display panel dynamically adjusts its power state based on real-time human presence detection. When a user is detected, the panel transitions to a high power state for immediate responsiveness. When no user is present, it transitions to a low power state to conserve energy, thus resolving the contradiction between responsiveness and energy consumption.
Solution Approach 2:
The system incorporates human presence sensors that provide continuous feedback about user presence to the power management controller. This feedback loop enables the display panel to automatically adjust its power state, ensuring high responsiveness when needed while minimizing energy consumption when the user is absent.
2Productivity
If human presence detection is integrated into the display panel, then power management efficiency is improved, but device complexity increases
Solution Approach 1:
The human presence detection functionality is merged directly into the display panel structure, combining multiple functions (display and presence detection) into a single integrated unit. This integration improves power management efficiency by enabling direct communication between the sensor and display SoC, while the modular integration approach minimizes the increase in overall device complexity.
Solution Approach 2:
The display panel is designed with multi-functionality, serving both as a display device and as a human presence detection system. The display SoC handles both display control and presence detection processing, reducing the need for separate dedicated components and thereby improving power management efficiency without proportionally increasing device complexity.
3Speed
If the display panel uses integrated human presence sensor, then communication speed is improved, but manufacturing complexity increases
Solution Approach 1:
The human presence sensor and display components are merged into a single integrated panel structure with shared communication interfaces. This integration enables direct, high-speed communication between the sensor and display SoC without requiring separate communication channels, thus improving communication speed while simplifying the manufacturing process through unified production.
Data Source
AI summary
Methods, apparatus, systems and articles of manufacture are disclosed for display panel human presence detection. An example display device includes a sensor to generate a detection signal based on whether a human is detected, and logic circuitry to generate a control signal to cause an adjustment of a power state of the display device based on the detection signal.