Adaptive Video System Adjusting Parameters by User Position
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Solution Overview
Problem
Current video systems, such as LCD televisions, preset video and audio parameters based on a fixed user distance and position, leading to suboptimal viewing experiences when users are at different distances or angles, with limited user control over complex parameter adjustments and no consideration for multiple viewers.
Innovation Solution
A system that allows users to input their distance and position relative to the TV using a remote control, enabling automatic adjustments of video and audio parameters, including PIP window size and zoom, based on predefined rules stored in the TV's memory, to enhance user satisfaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If video parameters are preset for a fixed distance, then video quality is optimized for that specific distance, but video quality deteriorates when viewed from other distances
Solution Approach 1:
The patent implements dynamic adjustment of video parameters based on the user's distance from the television. The system automatically detects or receives input about the user's position and dynamically modifies parameters such as brightness, contrast, sharpness, and gamma to optimize viewing quality at each distance, transforming the static preset system into an adaptive dynamic one.
Solution Approach 2:
The patent changes multiple video parameters simultaneously based on viewing distance: brightness is adjusted to compensate for perceived luminance changes, contrast is modified to maintain image differentiation, sharpness is tuned for optimal detail perception, and gamma is corrected to preserve tonal relationships. This coordinated parameter adjustment resolves the contradiction by adapting the system to different viewing conditions.
2Adaptability or versatility
If video parameters are adjusted manually by the user, then customization is possible, but the complexity of adjustments makes it difficult for users to make optimal changes
Solution Approach 1:
The patent enables the television system to automatically perform the complex task of parameter adjustment without requiring user expertise. The system self-adjusts multiple interrelated video parameters based on the user's distance and position, eliminating the need for users to understand the complex relationships between brightness, contrast, sharpness, and gamma settings.
Solution Approach 2:
The system incorporates feedback mechanisms where the user's position information is continuously monitored, and the video parameters are automatically adjusted in response. This closed-loop approach ensures optimal viewing conditions are maintained without requiring manual intervention, resolving the contradiction between customization and ease of operation.
3Device complexity
If the system considers only perpendicular distance to the television, then the control mechanism remains simple, but user positioning (left, right, angled views) is not accounted for
Solution Approach 1:
The patent extends the control mechanism from one-dimensional distance measurement to two-dimensional spatial positioning by incorporating angular information. The system now considers not only how far the user is from the television but also from what angle (left, right, above, below), adding a dimensional aspect to the control parameters that enables comprehensive coverage of all viewing positions.
4Adaptability or versatility
If the system supports multiple users, then user coverage is improved, but the distance determination method becomes more complex and less accurate
Solution Approach 1:
The patent segments the viewing environment into multiple user zones or positions, with each zone having predetermined optimal parameter settings. Instead of attempting to precisely measure and track multiple moving users, the system divides the space around the television into discrete segments and assigns specific parameter configurations to each segment, simplifying the control mechanism while maintaining adaptability for multiple users.
Data Source
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AI summary
The present invention relates to a method of increasing the quality of video and audio as perceived by user/users according to the distance(s) and/or position(s) of such user/users relative to a video system, particularly to an LCD television, being watched, and can be used in all video systems.