Wireless Display Transmission Format Adaptation
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Solution Overview
Problem
There is a need for efficient transmission of display frames over wireless channels to enable communication devices to transmit and receive display content to larger screens like televisions, requiring real-time or near real-time processing and reduced latency.
Innovation Solution
A method for wirelessly transmitting content from a source device to a sink device, involving determining data types, selecting appropriate transmission formats such as screencasting, GPU encoding, or GPU processing with media streaming, and adapting based on latency, image/video quality, and power consumption to optimize transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If display frames are transmitted over wireless channels in real-time, then the transmission speed and responsiveness are improved, but the bandwidth consumption and power usage increase
Solution Approach 1:
The system dynamically adapts transmission parameters including format selection (screencasting, GPU encoding, or media streaming), resolution, and frame rate based on current wireless channel conditions and power availability. This allows the system to optimize between transmission speed and power consumption in real-time rather than using fixed parameters
Solution Approach 2:
The patent changes multiple transmission parameters including data format type, encoding method, and quality settings based on detected channel conditions and power state. When power is limited or channel quality degrades, the system transitions to more efficient formats with lower bandwidth and power requirements
2Adaptability or versatility
If multiple transmission formats are supported for different data types, then the adaptability and quality are improved, but the device complexity increases
Solution Approach 1:
The system segments the display content into different data types (graphics, video, mixed) and applies appropriate transmission formats to each segment. This allows specialized handling of different content types without requiring the entire system to support all formats simultaneously, reducing overall complexity
Solution Approach 2:
The system implements a universal transmission framework that can handle multiple data types and formats through a single adaptive architecture. Rather than separate dedicated paths for each format, one multi-functional system selects and applies the appropriate format based on content type and conditions
3Loss of time
If latency is reduced for real-time transmission, then the responsiveness is improved, but the transmission reliability and error rate worsen
Solution Approach 1:
The system applies error correction and reliability measures selectively based on the importance of the content and current channel conditions. For less critical content or when latency is paramount, fewer error correction measures are applied. For critical content or poor channel conditions, enhanced error protection is applied, balancing latency and reliability requirements
Data Source
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AI summary
Methods and devices for wirelessly transmitting content from a source device to a sink device are disclosed. The method comprises: identifying one or more data types associated with a display frame displayed on the source device; selecting a transmission format for the display frame in accordance with the one or more identified data types, wherein the transmission format is selected from the group consisting of screencasting, graphics processing unit (GPU) processing, or GPU processing with media streaming; and sending visual information representing the display frame in the transmission selected transmission format to the sink device.. One or a combination of latency, image/video quality, and power consumption associated with the wireless transmission may be used to adapt the wireless transmission.