Context-Aware BIOS Interrupts for Secure User Presence Detection
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Solution Overview
Problem
Existing user presence detection (UPD) approaches lack context-based interrupt line protection, particularly for devices like cameras and biometric sensors, leading to potential security vulnerabilities and performance bottlenecks due to unauthorized user detection and compromised firmware.
Innovation Solution
Implementing a distributed BIOS with context-aware resource data and intelligent interrupt management to enhance user presence detection by decoupling BIOS components and managing interrupts based on user personas, ensuring secure and efficient system operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional user presence detection is implemented without context-based interrupt protection, then basic detection functionality is achieved, but security vulnerabilities and performance bottlenecks occur due to unauthorized detection and compromised firmware
Solution Approach 1:
The patent segments the interrupt handling system by creating separate interrupt vectors for different user personas and contexts. The BIOS is divided into modules that can independently manage interrupts based on the detected user persona, allowing secure isolation of detection functions while maintaining overall system security. This segmentation prevents unauthorized access to critical firmware routines.
Solution Approach 2:
The patent introduces an intermediary layer between the user presence detection hardware and the core BIOS firmware. This intermediary context-aware persona module acts as a mediator that validates and manages interrupt requests, filtering out unauthorized detection attempts before they reach critical system firmware, thus enhancing security without requiring complex changes to the core BIOS.
2Reliability
If distributed BIOS with context-aware persona operations is implemented, then secure user presence detection is achieved, but system complexity increases due to additional firmware components and interrupt management logic
Solution Approach 1:
The patent implements a universal context-aware persona module that can identify and manage multiple different user personas across various detection scenarios. This single multi-functional module handles different user contexts (authorized users, unauthorized users, different application scenarios) without requiring separate dedicated firmware components for each case, thereby reducing overall firmware complexity while maintaining security.
Solution Approach 2:
The patent introduces dynamic interrupt vector selection based on the detected user persona. The system dynamically adjusts which interrupt vectors are active and how interrupts are routed depending on the current user context. This dynamic approach allows the firmware structure to adapt to different scenarios without requiring static complex configurations for all possible cases, simplifying the overall firmware architecture.
3Productivity
If intelligent interrupt management is implemented based on user personas, then performance bottlenecks are reduced through optimized resource allocation, but processing overhead increases due to context-aware enumeration operations
Solution Approach 1:
The patent performs context-aware persona enumeration and interrupt vector setup in advance, during system initialization or when user profiles are first created. By pre-configuring the appropriate interrupt vectors and context parameters before they are needed during actual user presence detection, the system avoids time-consuming processing during critical detection moments, thus reducing processing overhead while maintaining productivity benefits.
Solution Approach 2:
The patent creates and caches context-aware persona data and interrupt vector configurations that can be rapidly copied and applied during user presence detection events. Instead of performing full context enumeration each time detection is needed, the system uses pre-generated persona profiles and interrupt mappings, significantly reducing processing time while maintaining the productivity advantages of context-based resource optimization.
Data Source
AI summary
A firmware management operation. The firmware management operation includes providing an information handling system with a distributed BIOS; identifying context aware resource data associated with the information handling system; performing a context aware persona operation using the context aware resource data associated with the information handling system; and, performing an intelligent interrupt management operation based upon the context aware persona enumeration operation.