Screen Control Segmentation for Privacy Protection
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Solution Overview
Problem
When a user does not want a certain screen on an electronic device to display content, existing systems fail to prevent private information from being visible to others, leading to potential privacy breaches.
Innovation Solution
A control method and apparatus that allow a target application to send control information to cause a screen to enter a state where the operating system cannot control it, while remaining electrically connected to the processor, effectively preventing the screen from displaying content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the screen remains electrically connected to the processor for normal operation, then the screen can display content normally, but private information can be seen by others when the user does not want the screen to display content
Solution Approach 1:
The patent divides the screen control into two independent pathways: one controlled by the operating system for normal display operations, and another controlled by firmware for privacy protection. The firmware can independently control the screen's electrical connection state without OS involvement, allowing the screen to be segmented into OS-managed and firmware-managed control domains.
Solution Approach 2:
The firmware acts as an intermediary layer between the processor and the screen. It receives control instructions from the operating system and decides whether to forward them to the screen based on privacy protection requirements. This intermediary mechanism allows the system to maintain normal operation while preventing unauthorized display content.
2Ease of operation
If the operating system controls the screen for normal operation, then the screen can be managed by the OS, but the OS cannot prevent the screen from displaying content when privacy protection is needed
Solution Approach 1:
The control authority is segmented between the operating system and the firmware. The OS handles normal display control operations, while the firmware handles privacy protection decisions. This segmentation allows each component to operate within its designated domain without interfering with the other's functionality.
Solution Approach 2:
The patent adds a new dimension of control by introducing firmware-level intervention between the OS and the screen. Instead of the OS directly controlling the screen in a single-layer architecture, a second control dimension is added where the firmware can override or filter OS commands based on privacy requirements.
3Object-affected harmful factors
If the screen is completely disconnected from the processor to prevent content display, then privacy is protected, but the screen cannot remain electrically connected for normal operation
Solution Approach 1:
The screen's electrical connection state is made dynamic rather than static. The connection can be established or disconnected based on real-time privacy requirements and operational needs. The firmware dynamically adjusts the connection state by controlling whether control instructions are forwarded to the screen, allowing flexible switching between connected and disconnected states.
Solution Approach 2:
The patent extracts the privacy protection function from the normal operation control flow. By separating the privacy decision-making process into a distinct firmware layer, the system can extract and execute privacy protection actions independently without affecting the overall screen connection and normal operation capabilities.
Data Source
AI summary
A control method for controlling an electronic device includes sending first control information by a target application. The first control information is used to cause a first screen to enter a first state. In the first state, an operating system is not able to control the first screen, and the first screen remains electrically connected to a processor. The processor is configured to run the operating system.