Signal Processor for Simultaneous BT.2020 and BT.709 Color Gamut Output
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Solution Overview
Problem
Current imaging systems face challenges in achieving high multifunctionality for capturing color images, particularly in supporting diverse color gamuts like ITU-R BT. 2020 and BT. 709, which are essential for ultra-high definition televisions and other display standards.
Innovation Solution
The implementation of a signal processor with correction and conversion circuitry that generates and outputs image data with different color gamuts from the same input signals, utilizing a three-chip imaging unit with a wide color gamut prism to produce image data compatible with ITU-R BT. 2020 and BT. 709 standards simultaneously.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single imaging system is designed to support multiple color gamut standards (ITU-R BT. 2020 and BT. 709), then the adaptability and versatility of the system is improved, but the device complexity increases due to the need for multiple processing paths and conversion circuitries
Solution Approach 1:
The signal processing system is divided into separate processing paths - a first processing path for ITU-R BT. 2020 color gamut and a second processing path for ITU-R BT. 709 color gamut. Each path independently processes the input signal to produce output optimized for its specific color standard, thereby managing complexity through functional segmentation while maintaining multi-standard support
Solution Approach 2:
The imaging system is designed with multi-functional capability to simultaneously support multiple color gamut standards. By incorporating both first and second processing paths that can operate concurrently, the system achieves universality, allowing a single device to serve multiple display standards and applications without requiring separate dedicated systems
2Productivity
If image data with different color gamuts is generated from the same input signals using multiple conversion circuitries, then the productivity and output versatility are improved, but the manufacturing precision and signal processing accuracy may be compromised due to the complexity of maintaining consistent quality across multiple processing paths
Solution Approach 1:
The conversion process is segmented into dedicated first conversion circuitry for BT. 2020 and second conversion circuitry for BT. 709. Each conversion path is independently optimized for its target color standard, ensuring processing accuracy is maintained for each gamut type while enabling simultaneous multi-format output
Solution Approach 2:
Each processing path is tailored with specific conversion characteristics optimized for its target color gamut. The first conversion circuitry applies transformations suitable for BT. 2020 while the second applies those appropriate for BT. 709, ensuring locally optimized quality for each output stream rather than using a generic processing approach
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
This approach enhances the multifunctionality of imaging systems by enabling the simultaneous output of image data with ITU-R BT. 2020 and BT. 709 color gamuts, allowing for broader compatibility and utility across different display standards, including HD and 4K resolutions.
Implementation Method 1
input circuitry configured to receive light through a prism and generate a corresponding input signal
Data Source
AI summary
There is provided a signal processor including correction circuitry configured to correct a signal for each color input to the signal processor and to output the corrected signal for each color, first conversion circuitry configured to receive the corrected signal for each color, to perform first image processing on each corrected signal for each color, and to generate a first signal having a first color gamut for each color, second conversion circuitry configured to receive the corrected signal for each color, to perform second image processing on each corrected signal for each color, and to generate a second signal having a second color gamut for each color, where the signal processor outputs a first image data having a first color gamut and a second image data having a second color gamut from same corrected signals for each color.