Alternating Pixel Block Reading Direction for Image Discontinuity
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Solution Overview
Problem
Existing imaging apparatuses face issues with image discontinuity and crosstalk due to mismatched reading timings between adjacent pixel blocks, leading to poor image quality.
Innovation Solution
The proposed solution involves a reading unit that controls the reading order of pixels in a specific pattern, where one pixel group is read in a first direction and an adjacent group is read in an opposite direction, reducing crosstalk and discontinuity by minimizing the time difference between adjacent pixel readings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pixels are read in a conventional sequential order (e.g., row by row or column by column), then the reading process is simple, but the reading timings of pixels at the boundary between adjacent pixel blocks do not match, causing image discontinuity
Solution Approach 1:
The patent applies the inversion principle by changing the reading direction alternately for adjacent pixel blocks. Specifically, odd-numbered pixel blocks read from left to right while even-numbered pixel blocks read from right to left (or vice versa). This opposite reading direction ensures that pixels at the boundaries of adjacent blocks are read at matching timings, eliminating image discontinuity without requiring complex timing control mechanisms.
2Reliability
If pixels are read with large time intervals between adjacent pixels, then the reading circuit can be simplified, but crosstalk occurs due to remainder of reset in the signal processing unit
Solution Approach 1:
The patent implements continuous reading of adjacent pixels by maintaining a consistent reading sequence across pixel block boundaries. By using alternating reading directions, the system ensures that pixels adjacent to block boundaries are read consecutively without large time intervals, preventing crosstalk from reset remainders while maintaining high reading speed through continuous signal processing.
3Reliability
If different reading orders are used for different pixel blocks to reduce boundary discontinuity, then image quality improves, but the reading control becomes more complex
Solution Approach 1:
The patent segments the pixel array into multiple pixel blocks with alternating reading directions. Each block is independently controlled with a simple bidirectional reading pattern, but the overall system achieves improved image quality at boundaries. This segmentation approach distributes the complexity across multiple simple blocks rather than requiring complex control for the entire array, making the system both effective and manageable.
Data Source
AI summary
A first pixel group disposed in a first direction is read in the first direction. A second pixel group adjacent to the first pixel group is read in a second direction, which is opposite to the first direction.