Mobile Display Calibration Fixture Using Camera-Guided Positioning
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Solution Overview
Problem
Current methods for calibrating electronic display screens require bulky and impractical equipment, generating large data sets, and involve lengthy processing times, making them unsuitable for widespread or field use.
Innovation Solution
A mobile device-based calibration system using a fixture with suction cups, motors, and image sensors to capture images of the display screen, utilizing machine learning for calibration and eliminating the need for spectrometers and colorimeters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If laboratory spectrometers or colorimeters are used to calibrate electronic display screens, then measurement precision is improved, but device complexity and portability are worsened
Solution Approach 1:
The patent uses a mobile device camera to capture images of the display screen, creating a digital copy of the visual output. This camera-based approach replaces the need for complex spectrometers and colorimeters, achieving color calibration through image analysis rather than direct optical measurement. The camera captures RGB values that are then processed to determine color accuracy, effectively copying the visual information needed for calibration.
Solution Approach 2:
The patent replaces mechanical/optical measurement systems (spectrometers, colorimeters) with an electronic image capture system. Instead of using specialized optical instruments to measure light properties, the system uses a standard mobile device camera to capture images, which are then analyzed computationally to extract color information. This substitution eliminates the need for bulky laboratory equipment while maintaining calibration capability.
2Measurement precision
If laboratory spectrometers or colorimeters are used for calibration, then measurement precision is improved, but ease of operation and field use are worsened
Solution Approach 1:
The patent makes the mobile device itself the calibration instrument, giving it multi-functionality. The same mobile device that displays content can also measure and calibrate its own display or other displays using its built-in camera. This universal approach eliminates the need for separate specialized calibration equipment, making the system easy to operate and deploy in various field settings.
Solution Approach 2:
The mobile device performs self-calibration by using its own camera to capture and analyze images of its display screen. The system automatically processes the captured images, compares measured colors against reference values, and adjusts calibration parameters without requiring external laboratory equipment or expert intervention. This self-service capability enables easy field deployment.
3Measurement precision
If traditional calibration methods are used, then measurement precision is improved, but productivity and calibration time are worsened
Solution Approach 1:
The patent implements automated periodic calibration by capturing multiple images at different positions on the display screen and processing them systematically. The system can perform calibration repeatedly and quickly, capturing images at regular intervals across the screen surface and automatically computing average color values. This periodic, automated approach significantly reduces calibration time compared to manual methods while maintaining precision.
Solution Approach 2:
The patent introduces computational processing as an intermediary between image capture and calibration results. Instead of direct manual measurement, the system uses software algorithms to automatically analyze captured images, extract color information, compare against reference values, and determine calibration adjustments. This computational intermediary streamlines the process, enabling rapid automated calibration while maintaining measurement accuracy.
4Productivity
If automated image capture and processing is implemented, then productivity is improved, but device complexity is worsened
Solution Approach 1:
The patent employs a dynamic, adjustable fixture arm that can move to different positions on the display screen to capture images at multiple locations. The arm is designed to be manually adjustable rather than fully automated, allowing the user to position it at different points on the screen as needed. This dynamic positioning capability enables comprehensive calibration across the entire display surface while keeping the mechanical complexity manageable through manual operation.
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
Enables rapid and efficient calibration of electronic display screens, reducing the calibration time from several hours to just a few minutes, and allows for portable and practical calibration in various settings.
Implementation Method 1
The fixture may include two or more suction cups configured to secure the fixture to the display screen
Data Source
AI summary
A fixture that is configured to hold a mobile device for calibrating an electronic display screen includes an adjustable arm, a controller including a processor, one or more motors, one or more suction cups configured to attach the fixture to the electronic display screen, one or more brackets, attached to the arm, to hold the mobile device such that the camera of the mobile device points towards the electronic display screen. The processor of the controller is configured to receive one or more signals from the mobile device to move the adjustable arm to point the camera of the mobile device towards a point on the electronic display screen, and in response to receiving the signals from the mobile device, send one or more signals to the motors to move the adjustable arm to point the camera of the mobile device towards the point on the electronic display screen.