Bit Drift Correction in Endoscope Image Data Transmission
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Solution Overview
Problem
Conventional endoscope systems face challenges in maintaining accurate bit synchronization and signal quality during image data transmission, particularly due to bit drift issues, which can lead to improper synchronization between the image pickup apparatus and the endoscope signal processing unit.
Innovation Solution
An image data transmission system that includes a bit drift amount detecting section to identify bit drift and a bit shifting section to correct it, ensuring accurate bit alignment and enhanced signal quality by converting serial data into parallel data and performing bit shifting based on detected drift amounts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If serial data is transmitted from the image pickup apparatus to the endoscope signal processing apparatus, then data transmission efficiency is improved, but bit drift occurs leading to synchronization errors
Solution Approach 1:
The patent implements a feedback mechanism where the endoscope signal processing apparatus detects bit drift in received serial data and sends correction information back to the image pickup apparatus. The bit drift amount detecting section continuously monitors synchronization status and adjusts the serial data transmission timing based on detected drift, creating a closed-loop control system that maintains synchronization accuracy while preserving high-speed serial transmission benefits.
Solution Approach 2:
The patent dynamically adjusts transmission parameters to compensate for bit drift. The system changes the timing and phase of serial data transmission based on detected drift amounts, modifying transmission characteristics in real-time to maintain synchronization. This parameter adjustment allows the system to adapt to varying transmission conditions without reducing data rate.
2Measurement precision
If bit drift correction processing is performed continuously, then synchronization accuracy is improved, but power consumption increases
Solution Approach 1:
The patent implements periodic bit drift detection and correction instead of continuous processing. The bit drift amount detecting section operates at specific intervals or triggered by synchronization signals, rather than continuously analyzing every data bit. This periodic approach maintains adequate synchronization accuracy while significantly reducing the computational load and power consumption compared to continuous correction processing.
3Manufacturing precision
If serial/parallel conversion is performed for correction processing, then bit alignment accuracy is improved, but device complexity increases
Solution Approach 1:
The patent divides the bit drift correction function into separate modular sections: a bit drift amount detecting section that identifies synchronization errors, and a bit shifting section that performs the actual correction. This segmentation allows each module to be optimized independently and simplifies the overall system architecture compared to a monolithic conversion processing unit.
Solution Approach 2:
The patent introduces a dedicated bit drift amount detecting section as an intermediary between the serial data reception and parallel conversion stages. This intermediary component analyzes synchronization status and provides correction information without requiring full serial-to-parallel conversion for every correction operation, reducing the complexity burden of continuous conversion processing.
Data Source
AI summary
An image data receiving apparatus includes: a first receiving section that receives a first signal including serial data according to image data; a second receiving section that receives a second signal including serial data that is different from the serial data included in the first signal; a first conversion section that converts the serial data included in the first signal into parallel data and outputs the parallel data; a second conversion section that converts the serial data included in the second signal into parallel data and outputs the parallel data; a bit drift amount detecting section that obtains information indicating a degree of drift of the parallel data outputted from the second conversion section from a predetermined bit pattern; and a bit shifting section that shifts the parallel data outputted from the first conversion section according to the information obtained by the bit drift amount detecting section.