Display Device Video Mirroring Rotation Control
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Solution Overview
Problem
Display devices face challenges in maintaining video quality during screen mirroring, particularly when switching between landscape and portrait modes, as they often cannot crop or provide appropriate resolution without degrading video output.
Innovation Solution
A display device with a communication unit and control unit that rotates and maps video data based on the screen mode, ensuring high-quality video output by adjusting video data received from external devices to match the display device's screen size and orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the display device outputs video data without rotation or cropping, then the device complexity is reduced, but the video quality deteriorates when screen mode does not match video orientation
Solution Approach 1:
The control unit performs preliminary rotation or cropping of video data before output to match the screen mode. By preparing the video data in advance according to the display orientation (landscape or portrait), the system ensures high video quality without adding complex real-time processing during playback.
2Manufacturing precision
If the display device rotates video data to match screen mode, then video quality is maintained, but the processing time increases
Solution Approach 1:
The control unit determines the screen mode and rotates or crops video data before output. By performing the rotation operation in advance based on the detected screen orientation, the system minimizes processing delays during actual video playback while maintaining high video quality.
3Adaptability or versatility
If the display device supports both landscape and portrait modes with proper video rotation, then the adaptability improves, but the device complexity increases
Solution Approach 1:
The control unit dynamically adjusts video processing operations based on the detected screen mode. When the screen is in landscape mode, video data is processed accordingly; when in portrait mode, different processing is applied. This dynamic adaptation allows the device to support multiple screen orientations without requiring separate hardware for each mode.
Solution Approach 2:
The control unit acts as an intermediary between the video data and the display unit. It receives video data, determines the appropriate processing based on screen mode, and outputs the processed video to the display unit. This intermediary approach simplifies the overall system architecture by centralizing the decision-making logic in one component.
Data Source
AI summary
The present disclosure is a display device comprises a communication unit configured to communicate with an external device, a display unit, a control unit configured to receive video data from the external device through the communication unit, and output mirrored video data through the display unit based on whether the video data is rotated and a screen mode of the display device.