Pixel Array Signal Reading for Color Mixing Reduction
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Solution Overview
Problem
Existing signal processing devices face challenges in efficiently reading pixel signals from arrays with different pixel configurations, leading to color mixing and reduced reading speed when rows of pixels with varying arrays are arranged at intervals of one line.
Innovation Solution
A signal processing device and method that includes a pixel array unit with first, second, third, and fourth pixels having different spectral sensitivity characteristics, arranged in a matrix form, and a pixel signal reading unit that reads and adds pixel signals from these pixels, optimizing their arrangement to improve reading efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If rows of pixels having different pixel arrays are arranged at intervals of one line, then the pixel array can be optimized for specific applications, but color mixing occurs and reading efficiency decreases
Solution Approach 1:
The pixel array is segmented into different types of pixels (first pixels, second pixels, third pixels, fourth pixels) with different spectral sensitivity characteristics, arranged in a matrix pattern where each pixel type is read separately through dedicated readout paths, preventing color mixing while maintaining configuration flexibility
2Adaptability or versatility
If rows of pixels having different pixel arrays are arranged at intervals of one line, then application-specific optimization is achieved, but reading speed must be increased to compensate for the complex arrangement
Solution Approach 1:
The readout process is segmented into parallel operations where multiple pixel types are read simultaneously through separate readout paths, effectively increasing reading speed while maintaining the optimized pixel array configuration
Solution Approach 2:
Multiple pixel signals are combined and read out in parallel through the pixel signal reading unit, which adds and reads signals from multiple pixels simultaneously, thereby increasing reading speed without compromising the benefits of the optimized pixel arrangement
3Reliability
If pixel signals are read individually from each pixel type, then color mixing is prevented, but reading time increases
Solution Approach 1:
The pixel signal reading unit combines multiple pixel signals into parallel readout operations, adding and reading signals from multiple pixels simultaneously, which maintains color accuracy while reducing total reading time
Solution Approach 2:
The reading process continues without idle time by simultaneously reading from multiple pixel types through parallel paths, ensuring that the reading operation is continuous and efficient while maintaining color separation accuracy
Data Source
AI summary
Provided is a signal processing device, including a pixel array unit configured to include first pixels, second pixels, third pixels, and fourth pixels which have different spectral sensitivity characteristics and are arranged in a matrix form; and a pixel signal reading unit configured to read pixel signals obtained from the plurality of pixels arranged in the pixel array unit. The first pixels are adjacent to the second pixels in a row direction and a column direction, the second pixels are arranged at a two-pixel pitch in the row direction and the column direction, the third pixels are adjacent to the second pixels in one diagonal direction, the fourth pixels are adjacent to the second pixels in the other diagonal direction, and the pixel signal reading unit adds and reads the pixel signals obtained from the plurality of first pixels.