Wireless Display Layer Segmentation for Selective Sink Rendering
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional wireless display systems transmit a single stream of encoded composite pictures, leading to delayed response times during encoding and inability to selectively display specific content layers on sink devices, such as smartwatches, without significant processing power.
Innovation Solution
The system transmits a transport stream comprising multiple sub-streams, each representing a display content layer, allowing sink devices to selectively output specific layers and enabling layer-specific encryption for rights management, using still image compression techniques like PNG for efficient data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single stream of encoded composite pictures is transmitted, then the system structure is simple, but the response time is delayed due to encoding overhead
Solution Approach 1:
The patent segments the composite display content into multiple independent layers, where each layer is encoded separately. This allows the sink device to selectively decode and display only the necessary layers, significantly reducing the encoding and decoding time required compared to processing a single composite stream, while maintaining a relatively simple system structure.
2Loss of energy
If a single stream of encoded composite pictures is transmitted, then transmission overhead is reduced, but selective display of specific content layers on sink devices is not possible
Solution Approach 1:
The patent segments the display content into multiple layers that can be independently transmitted and selectively displayed. This enables sink devices with limited processing power to receive the segmented layers and choose to display only the necessary ones, achieving both efficient transmission and adaptive content selection.
Solution Approach 2:
The patent enables dynamic control over which layers are displayed on sink devices. The system can adaptively select and transmit specific layers based on the capabilities and needs of different sink devices, allowing a single source device to efficiently serve multiple types of displays with varying processing powers.
3Adaptability or versatility
If multiple sub-streams are transmitted for each display content layer, then selective content display and layer-specific encryption are enabled, but data transmission overhead increases
Solution Approach 1:
The patent segments content into layers with independent encoding, allowing selective transmission and decryption of only necessary layers. This reduces the effective data transmission volume compared to sending complete composite streams to all devices, as each sink device receives and processes only the layers it needs.
Solution Approach 2:
The patent applies different encryption and compression qualities to different layers based on their specific requirements. Critical layers can have higher security and quality, while less important layers use lighter encryption and compression, optimizing the overall data transmission efficiency while maintaining necessary security and display quality.
Data Source
AI summary
A source device of a wireless display system composites display content of a plurality of layers to form composite display content. The source device may output the composite display content for display. Furthermore, the source device may generate a transport stream comprising a plurality of sub-streams. Each respective sub-stream of the plurality of sub-streams comprises data representing the display content of a respective layer of the plurality of layers. The source device may wirelessly transmit the transport stream to one or more sink devices for display by the one or more sink devices.