Wireless Video Compression Format Selection for UHD Displays
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Solution Overview
Problem
The high resolution and bandwidth requirements for streaming lossless video over wireless communication networks often exceed the transmission capabilities of current wireless connections, making it challenging to display high-definition video from wireless devices on external displays like TVs without significant bandwidth or processing power constraints.
Innovation Solution
The method involves determining the resolution and connection speed of both the wireless device and display, selecting an appropriate video compression format such as raw, distributed source coded, or high-efficiency video coded, and transmitting the video stream in that format using protocols like IEEE 802.11, to optimize bandwidth usage and maintain video quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If lossless video is transmitted over wireless network, then video quality is maintained, but bandwidth requirements exceed transmission capabilities
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting video compression parameters (such as bitrate, resolution, and compression format) based on the available wireless connection speed. The system determines the connection speed between the transmitting device and wireless display, then selects appropriate video compression settings from multiple options to optimize the balance between video quality and bandwidth consumption, enabling lossless or near-lossless video transmission within wireless bandwidth constraints.
2Measurement precision
If high resolution video is displayed on ultra-high definition display, then display quality is improved, but connection speed requirements increase
Solution Approach 1:
The patent implements dynamics by making the video transmission system adaptive to changing connection conditions. The system continuously monitors the wireless connection speed and dynamically adjusts the video stream parameters (resolution, compression format, bitrate) to match the current connection capabilities. This allows the system to maintain high-resolution video output on ultra-high definition displays while adapting to varying wireless connection speeds, preventing bandwidth overflow and ensuring smooth transmission.
3Quantity of substance
If video compression is applied, then bandwidth usage is reduced, but video quality may be compromised
Solution Approach 1:
The patent applies partial or excessive action by providing multiple video compression format options (such as raw video, distributed source coded video, and high-efficiency video coded video) with varying compression levels. The system selects the appropriate compression format based on the available bandwidth and connection speed, allowing for partial compression when bandwidth is limited while maintaining higher quality formats when bandwidth is abundant. This approach enables flexible bandwidth management without permanently sacrificing video quality.
Data Source
AI summary
Methods, devices, and computer program products for using raw bitstreams and lossless distributed source coded (DSC) video to optimize video performance in wireless dock with ultra-high definition displays. In one aspect, a method of transmitting a video stream from a transmitting device to a wireless video display is described. The method includes determining a resolution of the wireless video display and a native resolution of a video stream, as well as a connection speed between the transmitting device and the wireless video display. Based on this information, the method selects a video compression format, choosing between raw video, DSC video, and high-efficiency video coded video. The method further transmits the video stream in the selected video compression format from the transmitting device to the wireless video display.