X-ray Detector Gate Driver Multi-Pulse Initialization
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Solution Overview
Problem
Current X-ray detectors require lengthy initialization times due to repeated gate scanning, which affects their efficiency in removing image lag and increasing the overall image cycle time.
Innovation Solution
The X-ray detector employs a method where multiple gate pulses are supplied to each gate line during each gate scan, allowing for efficient initialization of photodiodes and reduced scrubbing time while maintaining image lag removal efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If repeated gate scanning is performed to initialize photodiodes, then image lag removal efficiency is improved, but initialization time increases
Solution Approach 1:
The patent applies periodic action by using multiple gate pulses within each gate scan period during the scrubbing phase. Instead of using a single gate pulse, the system delivers a series of periodic gate pulses to each gate line, which accelerates the initialization of photodiodes and improves image lag removal efficiency while controlling the total initialization time.
Solution Approach 2:
The patent changes the parameter of gate pulse frequency by supplying multiple gate pulses during each gate scan. This parameter change increases the rate at which photodiodes are initialized, thereby reducing the overall initialization time while maintaining effective image lag removal.
2Speed
If multiple gate pulses are supplied during each gate scan, then initialization speed is improved, but power consumption increases
Solution Approach 1:
The patent uses periodic gate pulses during the scrubbing phase to accelerate initialization. By concentrating multiple pulses within compressed time windows during non-imaging periods, the system achieves faster initialization speed while limiting power consumption impact to periods when no X-ray imaging is occurring.
Solution Approach 2:
The patent performs preliminary initialization actions by supplying multiple gate pulses during the scrubbing period before actual X-ray imaging begins. This preliminary action prepares the photodiodes in advance, allowing the system to achieve fast initialization without increasing power consumption during the critical imaging phases.
3Loss of time
If multiple gate pulses are supplied during each gate scan, then scrubbing time is reduced, but device complexity increases
Solution Approach 1:
The gate driver is designed to generate periodic gate pulses during the scrubbing phase by controlling pulse generation based on a scrubbing enable signal. This periodic pulse generation mechanism reduces scrubbing time while maintaining manageable device complexity through systematic control logic.
Solution Approach 2:
The gate driver dynamically adjusts its operation mode based on the scrubbing enable signal, switching between single-pulse mode during normal imaging and multi-pulse periodic mode during scrubbing. This dynamic behavior reduces scrubbing time while keeping the device complexity adaptable rather than permanently increased.
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 significantly reduces the initialization time of X-ray detectors and minimizes the burden on the power unit and read out integrated circuit, while maintaining effective image lag removal, thereby enhancing the efficiency of the X-ray detection process.
Implementation Method 1
a photodiode configured to generate an electrical detection signal corresponding to incident light
Data Source
AI summary
An X-ray detector is disclosed. According to one aspect, the X-ray detector includes a plurality of light sensing pixels each including a photodiode for generating an electrical detection signal corresponding to incident light and a switching device for transmitting the detection signal. The X-ray detector additionally includes a gate driver for supplying a gate pulse to the switching device via a plurality of gate lines. The gate pulse may be configured to turn on the switching device. The X-ray detector also includes a read out integrated circuit for reading out the detection signal from the plurality of light sensing pixels. During a scrubbing period, in which gate scanning is performed at least once to initialize the photodiodes of the plurality of light sensing pixels, a plurality of gate pulses are supplied to each gate line during each gate scan.