Mobile Terminal Display Control for Concurrent Video and Event Handling
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Solution Overview
Problem
Conventional mobile terminals with TV-out functions are inadequate for providing concurrent services and protecting user privacy when outputting video data to external display devices, as they obscure screen portions with event messages and potentially disclose personal information.
Innovation Solution
A display control method and apparatus in a mobile terminal that transmits video data to external devices, determines if events occur, and displays event processing screens on the mobile terminal, preventing public disclosure of personal information by keeping event details off the external display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If event message boxes are displayed on the external display device screen, then users can see event notifications, but the broadcast content is obscured and user privacy is compromised
Solution Approach 1:
The display system is segmented into two independent display paths: one for the external display device showing broadcast content, and another for the mobile terminal showing event notifications. This segmentation allows event messages to be displayed on the mobile terminal screen while the external display device continues to show the broadcast content without obscuration, thus resolving the contradiction between event notification visibility and content clarity.
Solution Approach 2:
The mobile terminal acts as an intermediary device that receives and displays event notifications separately from the external display device. Instead of displaying event messages directly on the external display device screen (which would obscure broadcast content), the system uses the mobile terminal as an intermediate display medium for notifications, allowing both broadcast content and event information to be visible simultaneously without interference.
2Device complexity
If the mobile terminal displays only one screen for the currently displayed service, then the display system is simple, but concurrent services cannot be provided
Solution Approach 1:
The display control system dynamically adjusts its behavior based on operational mode. In TV-out mode, the system dynamically switches to a dual-display configuration where the external display device shows broadcast content and the mobile terminal shows event notifications and other services. This dynamic adaptation allows the system to maintain simplicity during normal operation while enabling concurrent services when needed, resolving the contradiction between display system simplicity and concurrent service capability.
Data Source
AI summary
A mobile terminal and a method for a mobile terminal are provided. The mobile terminal includes a display unit, a controller to separate a main screen and a sub screen from video data, the main screen to be displayed on an external display device and the sub screen to be displayed on the display unit, and an interface to wirelessly transmit the main screen to the external display device for display while the sub screen is displayed on the display unit.