Dynamic EDID Output for Power-Aware Display Resolution
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Solution Overview
Problem
Conventional techniques for connecting external display devices to mobile devices fail to efficiently manage power consumption while transmitting image data, particularly when using battery power, leading to reduced device longevity and suboptimal image quality.
Innovation Solution
The implementation of a display device that outputs extended display identification data (EDID) based on the power source condition, switching between high and low power-consumption modes to adjust image resolution and frame rate accordingly, using a controller to detect power sources and manage EDID output via HDMI interfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the display device outputs high-resolution image data with high frame rate, then image quality is improved, but power consumption increases
Solution Approach 1:
The display device dynamically switches between high-resolution EDID and low-resolution EDID based on power source conditions. When AC power is detected, the device outputs high-resolution image data with high frame rate for optimal image quality. When battery power is detected, the device switches to low-resolution EDID to reduce power consumption, thereby resolving the contradiction between image quality and power consumption through adaptive dynamic adjustment.
Solution Approach 2:
The invention changes the resolution parameter by outputting different EDID data (first EDID for high resolution, second EDID for low resolution) based on power source conditions. This parameter change allows the display device to adapt its image output characteristics to match available power resources, effectively managing the trade-off between image quality and power consumption.
2Manufacturing precision
If the display device maintains high power consumption mode, then image quality is preserved, but battery life decreases
Solution Approach 1:
The display device implements dynamic power management by continuously monitoring power source conditions and adjusting EDID output accordingly. When battery power is detected, the device automatically switches to low-resolution mode, which significantly reduces power consumption and extends battery life. This dynamic adaptation ensures that image quality is maintained only when necessary (AC power available), while battery life is preserved when portable operation is required.
3Use of energy by moving object
If the display device switches EDID based on power source conditions, then power saving is achieved, but device complexity increases
Solution Approach 1:
The display device performs self-service power management by automatically detecting power source conditions and selecting appropriate EDID modes without requiring user intervention. The controller monitors power source status and autonomously switches between high-resolution and low-resolution EDID output, simplifying the user experience while achieving effective power savings. This self-service approach minimizes the perceived complexity for users while implementing sophisticated power management internally.
Data Source
AI summary
According to an embodiment, an electronic device is configured to output extended display identification data (EDID) to another electronic device, and to receive image data corresponding to the EDID from the other electronic device. The electronic device includes a memory and a controller. The memory is configured to store therein a plurality of distinct types of EDID. The controller is configured to detect a condition of a power source supplied to the electronic device, and to select an EDID corresponding to the condition.