Lithography Electronics Module Access Modes for Secure Diagnostics
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Solution Overview
Problem
Lithography apparatuses face risks of damage and unauthorized access due to improper use of programmable software components, which can lead to system component damage and inadvertent disclosure of technical know-how.
Innovation Solution
Implement a software component with multiple operation modes, including a default mode for normal operation and a service mode for diagnostics and reparameterizations, with authentication required for the service mode to prevent unauthorized access and ensure system integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If programmable software components are used to configure and operate the lithography apparatus, then flexibility and adaptability are improved, but the risk of system damage and unauthorized access increases
Solution Approach 1:
The software component is segmented into different access levels or modes of operation. A first set of software functionalities is accessible to authorized users for normal operation, while a second set of software functionalities requiring higher authorization is restricted. This segmentation allows the system to maintain flexibility for configuration while preventing unauthorized access that could cause damage.
Solution Approach 2:
An authentication mechanism acts as an intermediary between users and the software functionalities. The authentication unit verifies user credentials before allowing access to different sets of software functionalities, thereby mediating between the desire for flexible configuration and the need to prevent system damage.
2Ease of repair
If programmable software components are used for diagnostics and optimization, then system maintenance capability is improved, but the risk of unauthorized disclosure of technical know-how increases
Solution Approach 1:
The software functionalities are segmented into different accessible sets based on user authorization levels. Diagnostics and optimization functions are placed in a restricted second set that requires higher authorization, preventing unauthorized disclosure of technical information while maintaining the ability to perform maintenance when properly authorized.
3Ease of operation
If access to all software functionalities is granted to users, then ease of operation is improved, but the risk of improper use and system damage increases
Solution Approach 1:
Access to software functionalities is segmented into multiple levels. A first set of functionalities is available to authorized users for normal operation, while a second set requiring higher authorization contains more powerful functions. This segmentation maintains ease of operation for authorized tasks while preventing harmful effects from unauthorized use.
Solution Approach 2:
The authentication unit provides feedback by verifying user credentials and controlling access based on authorization levels. This feedback mechanism ensures that users can operate the system easily within their authorized scope while preventing improper use that could cause damage.
Data Source
AI summary
A system includes a lithography apparatus with a number N of electronics modules for a number of actuator/sensor devices of the lithography apparatus, where N≥1. The electronics module comprises a software component with a plurality of software functionalities. The software component is operable in a plurality of different modes of operation, which comprise a default mode and a service mode. A first set of the software functionalities, which is formed as a subset, can be executed in the default mode. A second set of the software functionalities, which is larger than the first set, can be executed in the service mode.