Relay Device Notification Filtering for Privacy Protection
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Solution Overview
Problem
Conventional technologies fail to prevent personal information from being displayed on an external display device when a video content from a mobile terminal is shown on a TV, allowing sensitive information to be visible to viewers during notifications such as calls or messages.
Innovation Solution
A relay device with a controller that obtains video signals and notification information from a mobile terminal, determines if the information includes personal data, and superimposes simplified notification information by deletion or replacement, preventing personal info from being displayed on the external screen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If notification information is displayed as is on the external display device, then the notification information is clearly visible to the user, but personal information may be seen by other viewers
Solution Approach 1:
The patent extracts personal information from notification information before displaying it on the external display device. The controller identifies and removes sensitive data elements (such as message content, caller ID, or notification details) while retaining non-sensitive portions for public display, thus preventing personal information exposure while maintaining notification visibility.
Solution Approach 2:
The patent applies different display qualities to different parts of the notification information. Sensitive portions are processed to remove or obscure personal information, while non-sensitive portions are displayed clearly. This allows the notification to remain visible and informative for the user while protecting personal data from being seen by others.
2Object-affected harmful factors
If personal information is removed from notification information, then privacy is protected, but the notification information becomes less informative
Solution Approach 1:
The patent selectively extracts only the personal information portions from notification data while preserving non-sensitive information. The controller analyzes the notification structure to identify which elements contain personal data and removes only those specific elements, leaving the rest of the notification intact and informative.
Solution Approach 2:
The patent applies information processing locally to different segments of the notification. Non-sensitive segments are displayed in full detail to maintain informativeness, while only the sensitive segments are modified or removed. This ensures the notification remains useful and informative while protecting privacy.
3Object-affected harmful factors
If the relay device processes notification information to remove personal data, then privacy is protected, but the device complexity increases
Solution Approach 1:
The patent implements self-service by leveraging the mobile terminal's existing notification processing capabilities. The relay device's controller receives pre-processed notification data from the mobile terminal that already contains identified personal information markers, reducing the complexity of analysis required. The system uses the mobile device's own metadata and structure to guide the filtering process.
Solution Approach 2:
The patent designs the controller to handle multiple types of notification information (messages, calls, alerts, etc.) through a unified processing approach. By creating a universal filtering mechanism that works across different notification formats and sources, the device complexity is minimized while maintaining comprehensive privacy protection across various notification types.
Data Source
AI summary
A relay device includes: a case which holds a mobile terminal, the mobile terminal being attachable to and detachable from the case; a first interface to which the mobile terminal held in the case is connected; a second interface with which the external display device is connected; and a controller housed in the case. The controller includes: an obtainer which obtains a video signal and first notification information from the mobile terminal via the first interface; and a superimposer which superimposes second notification information on the video signal based on the first notification information, and outputs the video signal on which the second notification information is superimposed to the external display device via the second interface. The second notification information is obtained by at least one of deletion or replacement of at least a portion of the first notification information.