Mobile Display Color Calibration via Embedded Sensors
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Solution Overview
Problem
Computing systems, such as laptops and mobile devices, often display incorrect colors over time, leading to issues like displaying pink instead of red, due to uncalibrated screens and varying ambient conditions.
Innovation Solution
A system that includes sensors for measuring color, ambient light, and temperature, which activate a calibration process when the lid is closed, using data from these sensors to calibrate the display to ensure accurate color representation, even when the device is closed, and optionally notify the user of the need for recalibration based on environmental changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the display is used continuously without calibration, then the device operates without interruption, but color accuracy deteriorates over time
Solution Approach 1:
The system performs display calibration in advance by closing the lid for a predetermined period, allowing sensors to measure and adjust color accuracy before the display is used again. This preliminary calibration action ensures color accuracy is restored without interrupting overall device productivity.
Solution Approach 2:
The display calibration system is self-service in that it automatically triggers when the lid is closed, using onboard sensors to measure display characteristics and adjust color accuracy without requiring external calibration equipment or user intervention. The system serves itself by utilizing the closed-lid state for calibration purposes.
2Measurement precision
If sensors are added for calibration, then color accuracy is improved, but device complexity increases
Solution Approach 1:
The sensor system serves multiple functions: it measures display color characteristics for calibration, detects ambient light conditions, and monitors temperature. By making the sensing system multi-functional, the patent reduces overall device complexity while achieving accurate color calibration through a single integrated sensor array.
Solution Approach 2:
The patent combines color measurement sensors, ambient light sensors, and temperature sensors into a single integrated calibration system that operates during the closed-lid state. This merging of functions into one cohesive system reduces the complexity that would arise from separate calibration and environmental monitoring systems.
3Measurement precision
If calibration is performed during operation, then color accuracy is maintained, but device availability is reduced
Solution Approach 1:
The system performs calibration periodically when the lid is closed, rather than continuously during operation. This periodic action during natural closed-lid states (when the device would otherwise be idle or portable) maintains color accuracy without reducing device availability during active use periods.
Solution Approach 2:
The calibration process maintains continuity of useful action by utilizing the closed-lid state, which is a natural idle or portable state for the device. During this time, the display is not being viewed anyway, so calibration occurs without interrupting the useful action of display viewing, thereby maintaining both color accuracy and device availability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively maintains accurate color display by calibrating the screen based on real-time measurements, ensuring that colors are correctly represented, matching those in external devices like photographs or HDTV broadcasts, and alerts the user when recalibration is necessary.
Implementation Method 1
a color sensor of a set of sensors may be used to scan a visual element, representing a display image
Implementation Method 2
An ambient light sensor of the set of sensors may be used to measure ambient light
Implementation Method 3
A temperature sensor may be used to measure temperature, and the measured temperature may be taken into account during calibration
Data Source
AI summary
Device, system, and method for display calibration. For example, an apparatus includes: one or more color sensors, embedded within a body of a mobile device, to measure one or more color attributes of a visual element displayed by a display unit of the mobile device when a lid of the mobile device is in a closed position; and a color calibrator to calibrate one or more parameters of the display unit based on the one or more color attributes measured by the one or more color sensors.