Wireless Device Screen Mirroring Picture Quality Adaptation
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Solution Overview
Problem
The screen mirroring function in wireless devices does not support picture quality settings during the Miracast connection process, leading to potential deterioration in video quality when transmitting and receiving video signals.
Innovation Solution
A wireless device that provides a screen sharing service checks for picture quality setting support from an external device and transmits video signals with set quality settings when supported, allowing for optimal video display without distortion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If screen mirroring is implemented without picture quality setting support checking, then device compatibility is improved, but video quality deteriorates
Solution Approach 1:
The patent applies preliminary action by checking picture quality setting support during the connection establishment phase before video transmission begins. The source device sends a capability inquiry message to the sink device, and based on the response, determines whether to perform picture quality processing on the video signal. This advance checking prevents quality deterioration by preparing the appropriate transmission mode before the actual video stream starts.
2Manufacturing precision
If picture quality processing is performed on video signal, then video quality is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamics by making the picture quality processing capability dynamic and adaptive. The source device adjusts its video processing behavior based on real-time capability detection of the sink device. When the sink device supports picture quality settings, the source device performs appropriate processing; when it doesn't support, the source device transmits without additional processing. This dynamic adaptation optimizes video quality while avoiding unnecessary processing complexity.
Data Source
AI summary
A wireless device for providing a screen sharing service with an external apparatus according to an embodiment of the present invention comprises: a wireless communication unit for receiving an image signal corresponding to a source image that the external apparatus is displaying: a display unit for displaying a mirroring image on the basis of the image signal; and a processor for controlling the display unit and the wireless communication unit. The processor can receive, from the external apparatus, a first message inquiring about support for an image quality setting function for the image being displayed by the external apparatus, and transmit a second message to the external apparatus in response to the first message, wherein the second message includes a response to the inquiry about whether the image setting function is supported.