Programmable Power Supply Access Levels for Secure Parameter Control
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Solution Overview
Problem
Existing programmable power supply devices lack a fine-granular protection mechanism to adapt to different manufacturing stages, leading to either excessive or insufficient flexibility and risks of system destruction due to inappropriate parameter settings.
Innovation Solution
Implementing multiple programmability levels with hierarchical access restrictions, where each level defines specific access permissions, and using a password or marker mechanism to transition between levels, ensuring authorized changes and tracking unauthorized access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple programmability levels with hierarchical access restrictions are implemented, then security and control over parameter modifications are improved, but device complexity increases
Solution Approach 1:
The programmability control is segmented into multiple hierarchical levels (first programmability level, second programmability level, etc.), where each level has specific access restrictions. This segmentation allows fine-grained control over parameter modifications at different manufacturing stages, improving security without requiring a completely complex monolithic control system.
Solution Approach 2:
The system performs preliminary actions by pre-configuring access restrictions and password requirements at each programmability level before actual parameter modifications occur. This preliminary setup of security measures allows the system to maintain reliability while managing complexity through structured advance preparation.
2Manufacturing precision
If fine-granular protection mechanism is implemented, then manufacturing precision and control are improved, but ease of operation deteriorates
Solution Approach 1:
The programmability control mechanism is made dynamic by allowing transitions between different programmability levels through password authentication. This dynamic structure enables the system to adapt its level of restriction based on the current manufacturing stage and authorization, maintaining manufacturing precision while improving ease of operation through flexible level switching.
Solution Approach 2:
The system changes the parameter of programmability restriction level based on authentication and manufacturing stage. By dynamically adjusting the restriction parameter, the system achieves precise control over parameter modifications while maintaining ease of operation through automated level management and password-based transitions.
3Reliability
If password or marker mechanism is used to transition between levels, then reliability is improved, but device complexity increases
Solution Approach 1:
Password and marker mechanisms serve as intermediaries between different programmability levels. These intermediaries provide reliable authorization control by mediating transitions between levels without requiring direct complex verification logic in the main control path, thus improving reliability while managing complexity through the intermediary authentication layer.
Data Source
AI summary
The invention involves a programmable power supply device with configurable restrictions to the programmability of the power supply device, wherein the programmable power supply device comprises a number of freeze/programmability levels, each freeze/programmability defining a dedicated access restriction to the programmability of the power supply device.