X-Ray Detection Substrate Timing Correction for Split-Screen Artifacts
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Solution Overview
Problem
Existing X-ray digital photography detection technologies face a split-screen problem due to random row interruptions during exposure, leading to inconsistent gray scale differences between image segments.
Innovation Solution
A detection substrate with an automatic exposure detection unit, control unit, gate driving unit, and data reading unit, which adjusts driving timing to fix row integration times and uses a pre-stored compensation value to correct gray scale differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If row scanning is interrupted randomly during exposure, then exposure timing flexibility is improved, but gray scale consistency between image segments deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-calculating and pre-storing compensation values for different row interruption positions before actual imaging. When a row is interrupted during exposure, the system retrieves the corresponding pre-prepared compensation value to correct gray scale inconsistencies, eliminating the need for complex real-time calculations and ensuring consistent gray scale across image segments.
2Manufacturing precision
If extensive pre-correction work is performed to fix gray scale differences, then image quality is improved, but imaging wait time increases
Solution Approach 1:
The patent performs the correction work in advance by pre-calculating compensation values for all possible row interruption positions and storing them in memory. During actual imaging, the system only needs to retrieve the appropriate pre-computed value based on the interruption position, dramatically reducing processing time while maintaining high image quality.
Solution Approach 2:
The patent creates a copy of compensation data in the form of pre-stored values that represent correction factors for different interruption scenarios. Instead of performing complex corrections on the actual image data in real-time, the system uses these pre-prepared compensation copies to quickly adjust gray scale values, significantly reducing imaging wait time.
3Manufacturing precision
If real-time gray scale correction is performed during imaging, then image consistency is improved, but processing complexity increases
Solution Approach 1:
The patent resolves processing complexity by moving the computationally intensive correction calculations to a preliminary stage. Compensation values for all possible row interruption positions are pre-calculated and stored. During real-time imaging, the system simply retrieves the appropriate pre-computed value and applies it, maintaining image consistency while minimizing processing complexity.
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
Ensures consistent gray scale values across the entire image, eliminating the need for extensive pre-correction work and reducing imaging wait times.
Implementation Method 1
X-ray digital photography detection technology uses Flat Panel Detector (FPD), whose pixel size can be less than 0.1 mm
Data Source
AI summary
The detection substrate comprises an automatic exposure detection unit, a control unit, a gate driving unit, and a data reading unit, wherein the automatic exposure detection unit is configured to send a first notification signal to the control unit when detecting that exposure is started; the control unit is configured to output, in a scanning time period, a first signal and a second signal to the gate driving unit, output the first signal to the end of the current frame when the first notification signal is received; the gate driving unit is configured to control the starting sequence of a plurality of detection units according to the first signal and the second signal in the scanning time period; and the data reading unit is configured to read data of a data line according to a data reading signal in the scanning time period.