Radiation Imaging Data Extraction via Dynamic Access Revocation
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Solution Overview
Problem
Radiation imaging apparatuses face prolonged downtime and reduced diagnosis efficiency due to difficulties in extracting log data when control units, such as CPUs, fail, as existing methods do not effectively address failures beyond power supply issues.
Innovation Solution
An information processing apparatus connected to a radiation imaging system, featuring a determination unit to identify abnormalities, a processing unit to revoke access authority, another control unit to regain access authority, and an output unit to extract and transmit radiation image data and log data from the storage unit, even in cases of control unit failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the control unit maintains access authority to the storage unit during normal operation, then data access efficiency is improved, but data security and prevention of unauthorized access deteriorate when the control unit fails
Solution Approach 1:
The access authority is made dynamic rather than static. The control unit's access authority to the storage unit is automatically revoked upon detection of failure, and can be selectively restored. This dynamic adjustment of access rights based on operational status resolves the contradiction by ensuring both efficient access during normal operation and security during failure states.
Solution Approach 2:
The system implements feedback mechanisms where the state of the control unit (normal or failed) is continuously monitored. Based on this feedback, the access authority is automatically adjusted - revoked when failure is detected and can be restored when appropriate. This feedback-driven approach ensures both efficiency and security requirements are met.
2Loss of time
If log data is automatically output when power supply fails, then maintenance response time is improved, but the ability to handle other types of failures (control unit, communication unit) deteriorates
Solution Approach 1:
The data output mechanism is designed to be universal, handling multiple types of failures (power supply, control unit, communication unit) rather than being specialized for only power supply failures. The system can output log data through multiple pathways (normal communication channel or alternative output methods), making it adaptable to various failure scenarios and maintaining versatility while improving response time.
Solution Approach 2:
The system prepares for potential failures in advance by having pre-configured data output capabilities. Log data can be output through alternative pathways before complete system failure occurs, ensuring that maintenance response time is improved while the system remains adaptable to different failure types.
3Ease of operation
If the control unit retains access authority after failure, then data extraction is simplified, but the risk of extracting corrupted or inconsistent data increases
Solution Approach 1:
The system applies partial action by selectively revoking access authority only when necessary (upon failure detection) while maintaining it during normal operation. This partial application of the revocation principle ensures data integrity is protected when needed without unnecessarily complicating normal data extraction operations, thus balancing simplicity and integrity requirements.
Data Source
AI summary
An information processing apparatus connected to an external connection unit of a radiation imaging apparatus including a storage unit and a control unit configured to access to the storage unit, comprises a determination unit that determines that an abnormality has occurred in the radiation imaging apparatus; a processing unit that, if determined that the abnormality has occurred, and the control unit has access authority to the storage unit, performs processing of revoking the access authority; another control unit that obtains the access authority in accordance with the processing of the processing unit and accesses the storage unit; and an output unit that outputs, to an external apparatus, any one of radiation image data captured by the radiation imaging apparatus and log data of the apparatus which are obtained from the storage unit via the other control unit.