Shared Display Projection Control for Privacy-Safe Screen Casting
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Solution Overview
Problem
When content is projected from a first electronic device to a second device during a sharing session, unintended third parties may access private information, such as chat messages or personal emails, due to the second device sharing its content with them.
Innovation Solution
The electronic device autonomously determines whether the second device's content is being shared with third parties and, if so, either withholds the projection or generates notifications to inform the user, allowing controlled sharing based on predefined approval lists.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If content is projected from a first electronic device to a second device during a sharing session, then the user can view content on a larger display, but unintended third parties may access private information due to the second device sharing its content with them
Solution Approach 1:
The system performs preliminary actions by checking the sharing status of the second device before allowing content projection. The controller determines whether the second device is currently sharing its display with third parties, and only permits projection when the sharing session is active and approved, preventing unintended access before it can occur
Solution Approach 2:
The system implements feedback mechanisms where the controller continuously monitors the sharing status of the second device and adjusts content projection accordingly. When the sharing session status changes, the system receives feedback and automatically modifies its behavior to maintain security while enabling legitimate viewing
2Reliability
If the system checks sharing status before every content projection, then privacy security is enhanced, but the complexity of the device increases
Solution Approach 1:
The second device autonomously determines and reports its own sharing status to the first device without requiring complex verification protocols. The controller uses straightforward status checks and simple conditional logic to decide whether to permit projection, maintaining low computational complexity while ensuring security
Solution Approach 2:
The system segments the content sharing functionality into distinct operational modes: approved sharing sessions where projection is permitted, and unapproved sessions where projection is blocked. This segmentation simplifies the control logic by creating clear decision boundaries rather than requiring complex continuous evaluation
Data Source
AI summary
An electronic device, computer program product, and method provide autonomous projecting of a selected content to a second display. The device is configured to, in response to a trigger to transmit first content of the electronic device to a connected second electronic device for presenting on a second display: (i) determine whether second display content is currently being shared with at least one third electronic device; and (ii) in response to determining that the second display content is currently being shared with at least one third electronic device: (a) withhold automatic rendering of the first content on the second display; and (b) generate and output a notification presented on at least the first display, the notification informing a user of at least one of the electronic device and the second electronic device that the content presented on the second display is being shared.