Display Device Main Sub-Signal Circuit Luminance Separation
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Solution Overview
Problem
Existing display devices with liquid crystal panels for color video processing face inefficiencies due to high data processing loads and communication bottlenecks, as they require processing and inputting video signals for multiple colors, which increases the data load on signal processing circuits.
Innovation Solution
A display device configuration with a main signal processing circuit that generates and outputs luminance information based on RGB values, reducing the need for sub-signal processing circuits to process multiple color video signals, and instead using this information to drive color and luminance modulation sections, thereby reducing data input and improving processing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sub-signal processing circuits receive video signals for multiple colors from the main signal processing circuit, then the sub-signal processing circuits can perform comprehensive processing, but the amount of data input to each sub-signal processing circuit increases
Solution Approach 1:
The patent extracts and separates the luminance processing function from the color processing function. The main signal processing circuit calculates luminance information based on color video data and outputs it separately to sub-signal processing circuits. This allows sub-circuits to receive only the necessary color data for their specific color processing tasks rather than all color data, reducing data volume while maintaining processing capability.
Solution Approach 2:
The patent divides the signal processing system into distinct functional segments: a main signal processing circuit that handles color video data and luminance calculation, and multiple sub-signal processing circuits that handle color-specific processing. Each sub-circuit receives only the color video data relevant to its function along with shared luminance information, segmenting the data flow to reduce individual data loads.
2Productivity
If each sub-signal processing circuit processes color video data independently, then processing efficiency increases, but the data load on communication buses increases
Solution Approach 1:
The main signal processing circuit performs preliminary calculation of luminance information from color video data before distributing data to sub-circuits. By pre-computing and sharing this luminance data, the system reduces the need for sub-circuits to request or process redundant color data, thereby improving communication efficiency while maintaining independent processing capability.
Data Source
AI summary
A display device includes a main signal processing circuit to which color video data is input, and a plurality of sub-signal processing circuits to which video data for respective colors output by the main signal processing circuit are input. The main signal processing circuit generates information, which is used when each of the sub-signal processing circuits performs a predetermined process, based on information of a plurality of colors in the color video data input, and then outputs data representing the generated information to each of the sub-signal processing circuits together with the video data for the respective colors.