Security Screen Layer Control in Electronic Devices
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Solution Overview
Problem
Electronic devices face challenges in maintaining the security of their display screens, particularly when malware attempts to cover the security screen by displaying non-security data on top of security data, leading to a loss of the security screen's original functionality, and they struggle to display security data without a supported security operating system.
Innovation Solution
An electronic device with a display module, memory, composing module, and control module that identifies and controls the type of display data to position security data at the uppermost layer and adjust transparency, ensuring that security data is displayed stably and securely, even without a traditional security operating system, using hardware security functions like Trust Zone or separate security software.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If non-security data is displayed on the security screen, then the user interface functionality is enhanced, but the security screen's original security function is compromised
Solution Approach 1:
The patent segments the display into multiple independent layers: a security screen layer displaying security data and a non-security data layer displaying additional UI elements. The control module selectively controls the visibility and positioning of each layer, allowing non-security data to be displayed only in non-overlapping regions or when security data is not present, thus enhancing UI functionality while preserving security integrity.
2Adaptability or versatility
If security data is displayed without a security operating system, then device compatibility is improved, but the stability and security of data display is reduced
Solution Approach 1:
The patent introduces a control module as an intermediary component that manages the display of security data without requiring a full security operating system. This control module implements security protocols and data validation mechanisms, enabling security data to be displayed stably on general-purpose devices while maintaining security requirements, thus achieving both compatibility and reliability.
3Adaptability or versatility
If malware is allowed to display data on the security screen, then display flexibility is improved, but the security screen can be covered and loses its security function
Solution Approach 1:
The patent implements preliminary anti-action by having the control module validate and authenticate data before allowing it to be displayed on the security screen. The control module checks whether incoming data is authorized and prevents malware from displaying unauthorized content. This pre-emptive security measure maintains display flexibility for legitimate applications while blocking harmful factors before they can compromise the security screen.
Data Source
AI summary
A device and a method for controlling a security screen in an electronic device are provided. The electronic device includes a display module, a first memory having at least one display data stored therein, a composing module that composes a plurality of display layers each including at least one display data and displays the same on the display module, and a control module that controls at least one of the display module, the first memory, or the composing module, wherein the control module identifies a type of the at least one display data included in each of the plurality of display layers and controls the attributes of the plurality of display layers to display a display layer including security data, among the plurality of display layers, at the uppermost position when the identified display data is the security data.