Projection Unit Distance Sensor Image Quality Adjustment
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Solution Overview
Problem
Portable and mobile projection units face challenges in maintaining image quality due to variable distances between the projection unit, screen, and user, which existing technologies cannot effectively address.
Innovation Solution
An electronic device equipped with a projection unit, sensors, memory, and processing circuitry that adjusts parameters such as contrast, sharpness, and brightness of the projected image based on real-time distance measurements and user visual acuity, ensuring optimal image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a portable or mobile projection unit is used to enable free location projection, then the adaptability of the projection unit is improved, but the image quality deteriorates due to variable distances between the projection unit, screen, and user
Solution Approach 1:
The system dynamically adjusts image parameters (brightness, contrast, sharpness, color) in real-time based on detected distances between the projection unit, screen, and user. This dynamic adaptation allows the projection unit to maintain optimal image quality across varying locations and viewing conditions, resolving the contradiction between location flexibility and image quality consistency
Solution Approach 2:
The system employs sensors to continuously measure distances and uses this feedback information to automatically adjust image parameters. This closed-loop control mechanism ensures that image quality is maintained at optimal levels regardless of changes in projection distance or user position, addressing the quality degradation issue while preserving portability benefits
2Adaptability or versatility
If the distance between the projection unit and screen varies, then the adaptability is improved, but the brightness and size of the projected image change, resulting in image quality degradation
Solution Approach 1:
The system changes multiple image parameters simultaneously (brightness, contrast, sharpness, color temperature) based on the detected projection distance and user position. By adjusting these parameters in coordination, the system compensates for distance-related quality variations and maintains consistent image quality across different projection scenarios
3Manufacturing precision
If prior art technology for fixed-location projection units is applied, then the image quality can be improved based on predefined viewing distance, but it cannot be applied to portable projection units with variable viewing distances
Solution Approach 1:
The system creates a universal image quality adjustment mechanism that works for both fixed and portable projection units. By using distance sensors and automated parameter adjustment, the system provides the benefits of fixed-location precision imaging while maintaining the location flexibility of portable devices, making the solution applicable across different projection unit types
4Adaptability or versatility
If zooming, keystone correction, or lens shift functions are used to adjust image size and shape, then the adaptability to location changes is improved, but the image quality degradation due to location change is not compensated
Solution Approach 1:
The system merges multiple adjustment functions (zoom, keystone, lens shift) with additional parameter adjustments (brightness, contrast, sharpness, color). This combined approach not only adjusts image geometry to fit different locations but also simultaneously compensates for quality degradation, providing comprehensive adaptation to varying projection conditions
Data Source
AI summary
An electronic device and a controlling method thereof are provided. For example, the electronic device may include: a projection unit including a projector, at least one sensor, a memory configured to store at least one instruction, and at least one processor, individually and/or collectively, configured to execute the at least one instruction, and at least one processor, individually and/or collectively, is configured to: obtain information regarding a first distance between the electronic device and a screen through the at least one sensor, obtain information regarding a second distance between the electronic device and a user through the at least one sensor, obtain information regarding a third distance between the user and the screen based on the information regarding the first distance and the information regarding the second distance, adjust at least one parameter related to a quality of a projected image based on the information regarding the first distance, the information regarding the third distance and information regarding visual acuity of the user, and control the projection unit to emit light corresponding to the image based on the adjusted at least one parameter.