Medical Observation Apparatus Memory Abnormality Handling
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Solution Overview
Problem
The medical observation apparatus described in JP 2010-51531 A is prone to image signal abnormalities due to memory unit issues, such as writing/reading errors and transmission errors, which can disrupt continuous observation of a subject.
Innovation Solution
The apparatus includes an abnormality detection unit that identifies memory unit issues and switches between the original image signal and a signal processed by a thinning-out unit to ensure continuous observation, using a selector and selection controller to choose between the memory unit and thinning-out processing unit outputs based on detected abnormalities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the memory unit is used to temporarily store image signals, then the image quality and observation continuity are improved, but the system becomes vulnerable to memory abnormalities that can disrupt observation
Solution Approach 1:
The system divides the image signal processing into two separate paths: one through the memory unit and another through the thinning-out processing unit. This segmentation allows the system to isolate memory-related abnormalities and switch to the alternative path when needed, preventing memory issues from disrupting overall observation continuity.
Solution Approach 2:
The system changes the processing parameters of the image signal by applying thinning-out processing (reducing pixel density) as an alternative to standard memory storage. This parameter change creates a different processing mode that can be activated when memory abnormalities occur, maintaining observation functionality under degraded conditions.
2Reliability
If thinning-out processing is performed on image signals, then the system can operate as a backup when memory fails, but the image resolution and quality are reduced
Solution Approach 1:
The system dynamically adjusts the processing mode based on real-time memory status. When memory is functioning normally, full-resolution processing is used; when memory abnormalities are detected, the system switches to thinning-out processing. This dynamic adaptation maintains system availability while minimizing image quality degradation.
Solution Approach 2:
The thinning-out processing acts as a disposable backup solution - it sacrifices image quality but ensures system continuity. Rather than relying on the expensive and vulnerable memory unit, the system has a simpler, lower-quality processing path that can be activated when needed, ensuring availability at the cost of resolution.
3Reliability
If an abnormality detection and switching system is implemented, then the observation continuity is maintained during memory failures, but the device complexity increases
Solution Approach 1:
The abnormality detection unit continuously monitors memory status and provides feedback to the selection controller. This feedback mechanism enables automatic switching between processing paths based on real-time memory health, maintaining observation continuity without requiring complex manual intervention or overly sophisticated control systems.
Solution Approach 2:
The selection controller acts as an intermediary component that manages the switching between memory-based processing and thinning-out processing. This single intermediary element coordinates the abnormality detection and processing path selection, preventing the need for multiple complex control mechanisms while ensuring reliable observation continuity.
Data Source
AI summary
A medical observation apparatus includes: an imaging unit configured to capture a subject image and output an image signal; a memory unit configured to temporarily store and output the image signal; an abnormality detection unit configured to detect an abnormality in the memory unit; a thinning-out processing unit provided in parallel with the memory unit and configured to perform thinning-out processing on the image signal; a first selector configured to select and output one of the image signals output from the memory unit and from the thinning-out processing unit; an image processing unit configured to perform image processing on the image signal; and a first selection controller configured to control the first selector such that the first selector selects the image signal output from the memory unit when no abnormality is detected and selects the image signal output from the thinning-out processing unit when an abnormality is detected.