Luminance Range Detection Unit for Video Signal Reproduction
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Solution Overview
Problem
In video systems with selector devices between source and sink devices, luminance range information may be missing or inaccurate due to format or signal conversion, leading to potential inaccuracies in video signal reproduction.
Innovation Solution
An information processing system with a detection unit to identify the luminance range of input data and a conversion unit to adjust it accordingly, ensuring accurate video signal reproduction by detecting and converting the luminance range based on detected results.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a selector device is arranged between source and sink devices to connect multiple source devices, then device versatility is improved, but luminance range information accuracy deteriorates due to format conversion
Solution Approach 1:
The patent introduces a luminance range detection unit as an intermediary component between the selector device and sink device. This mediator independently detects the actual luminance range of the video signal, bypassing the unreliable InfoFrame information that passes through the selector device. The detection unit acts as a trusted intermediary that provides accurate luminance range data despite the presence of format conversions in the signal path.
2Ease of operation
If the sink device performs luminance method setting based on InfoFrame information, then ease of operation is improved, but video signal reproduction accuracy deteriorates when InfoFrame information is missing or inaccurate
Solution Approach 1:
The patent implements a feedback mechanism where the detection unit continuously monitors the actual luminance range of the input video signal and provides this information back to the luminance range conversion unit. This feedback loop ensures that the system automatically adjusts to the correct luminance range based on real signal characteristics rather than relying solely on potentially erroneous InfoFrame metadata, thus maintaining both automatic operation and high reliability.
Solution Approach 2:
The detection unit enables the system to self-correct luminance range information without external intervention. When the InfoFrame information is missing or inaccurate, the system automatically detects the correct luminance range from the actual video signal and adjusts accordingly, making the system self-sufficient and eliminating the need for manual configuration or external calibration.
Data Source
AI summary
The present technology relates to an information processing system and an information processing method which can detect a luminance range of video data and convert the luminance range into an appropriate luminance range. The information processing system according to an aspect of the present technology detects a luminance range of input data, and converts the luminance range of the input data on the basis of a detection result of the luminance range of the input data and outputs the luminance range. The present technology can be applied to a video wall, a TV, a display, and the like.