Display Parameter Adjustment for Sleep Hygiene
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Solution Overview
Problem
Prolonged exposure to bright electronic displays with high blue light emission, especially in the evening, disrupts the body's natural sleep-inducing hormone release, making it difficult for users to fall asleep due to the interference with the transition into a restful state.
Innovation Solution
An electronic device system that adjusts display parameters, such as brightness and color temperature, based on time conditions to maintain a display characteristic value within a predefined range, minimizing the impact on the user's physiological state, by utilizing a melanopic spectral efficiency function to compute suitable brightness and color temperature ranges that do not interfere with the release of soporific hormones.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the display brightness and color temperature are kept high to maintain visual alertness and viewing quality, then the display performance and user engagement are improved, but the release of soporific hormones is blocked and the user's transition into a restful state is compromised
Solution Approach 1:
The display parameters (brightness and color temperature) are dynamically adjusted based on the time of day. During daytime, higher brightness and cooler color temperatures maintain alertness, while in the evening, the system automatically reduces brightness and warms the color temperature to allow natural hormone release, thus resolving the contradiction between maintaining display performance and avoiding physiological disruption
Solution Approach 2:
The system changes the physical parameters of the display output by adjusting brightness levels and color temperature (in Kelvin) based on temporal context. This parameter adjustment ensures that the display remains effective for its intended purpose while minimizing harmful effects on the user's circadian rhythm and hormone release at appropriate times
2Ease of operation
If the display brightness is increased to improve visibility and reduce eye strain, then the viewing comfort is improved, but the difference between display brightness and ambient light increases which compounds the disruption to hormone release
Solution Approach 1:
The display brightness is dynamically adjusted not only based on time of day but also in response to ambient light conditions. The system monitors the environment and adapts the display output accordingly, maintaining optimal viewing comfort while preventing excessive brightness differentials that would compound hormonal disruption
Solution Approach 2:
The system employs feedback mechanisms by monitoring ambient light conditions and user interaction patterns to continuously adjust display parameters. This feedback loop ensures that brightness adjustments maintain viewing comfort while staying within physiological safety thresholds that allow natural hormone release
3Productivity
If the display is used late into the evening for work or entertainment, then the productivity and user engagement are maintained, but the user's ability to fall asleep is significantly impaired
Solution Approach 1:
The system performs preliminary action by proactively adjusting display parameters before the user experiences sleep difficulties. As evening approaches, the system automatically begins reducing brightness and warming color temperature in advance, allowing productivity to be maintained while preemptively preparing the physiological conditions for sleep
Solution Approach 2:
The display parameter adjustments follow a periodic pattern aligned with the circadian rhythm. The system applies different parameter sets during different periods of the day, with evening periods triggering automatic adjustments that maintain productivity during active hours while facilitating transition to sleep during wind-down periods
Data Source
AI summary
Parameters of a display may be adjusted in response to accessing a time value corresponding to an electronic device that includes the display. A brightness value of the display may be adjusted based on the time value to maintain a display characteristic value within a predefined range and below a threshold. The display characteristic value may be independently controllable by one of the brightness or the color temperature of the display. A set of red green blue (RGB) color values of the display may be adjusted independent of the adjustment to the brightness value to maintain the display characteristic value within the predefined range and below the threshold while maintaining the brightness value of the display. In some examples, the RGB color values of the display may be adjusted at approximately the same time as the adjustment of the set of RGB color values of the display is performed.