Multicast Wireless Display Protocol Using UWB
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless display technologies face limitations in transmitting signals to multiple display devices without cables, leading to complexity, increased processing load, and reduced reliability due to varying wireless channels, with no effective point-to-multipoint wireless solution available.
Innovation Solution
Implementing a multicast protocol for wireless transmission using Ultra-Wide Band (UWB) technology, which allows for concurrent projection of display content onto multiple devices, reducing complexity and enhancing robustness and reliability by managing channel differences through rate control and group division methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional TCP/IP protocol is adopted for wireless transmission, then wireless display can be achieved, but device complexity and processing load increase significantly
Solution Approach 1:
The patent extracts and removes the complex TCP/IP protocol stack from the wireless display system, replacing it with a simplified custom protocol designed specifically for display data transmission. This extraction eliminates unnecessary protocol layers and processing overhead while retaining the essential wireless transmission functionality.
Solution Approach 2:
The patent changes the protocol parameters by designing a lightweight custom protocol with simplified header structures and transmission mechanisms optimized for display data. This parameter change reduces processing complexity while maintaining reliable wireless display transmission.
2Adaptability or versatility
If multiple wireless display devices are connected, then display versatility improves, but channel uncertainty increases and system reliability decreases
Solution Approach 1:
The patent segments the wireless transmission system into distinct functional layers: a reliable unicast control channel for device management and a multicast data channel for display content. This segmentation allows independent optimization of each channel, maintaining reliability while supporting multiple devices.
Solution Approach 2:
The patent introduces a gateway device as an intermediary that manages multiple wireless display devices. The gateway handles channel adaptation, rate control, and device coordination, isolating the complexity of multi-device management from individual devices and maintaining system reliability.
3Reliability
If cable connection is used between computer and display device, then transmission stability is ensured, but mobility and application scenarios are limited
Solution Approach 1:
The patent replaces the mechanical cable connection system with a wireless transmission system using customized protocols. This substitution eliminates the physical constraints of cables while maintaining transmission stability through optimized wireless communication mechanisms and error handling.
4Ease of operation
If wireless transmission to multiple devices is implemented, then display convenience improves, but manufacturing cost increases
Solution Approach 1:
The patent designs a universal wireless display protocol and gateway architecture that can serve multiple display devices simultaneously with a single implementation. This multi-functionality reduces per-device manufacturing costs by sharing common protocol processing and management functions across multiple devices.
Data Source
AI summary
The present invention discloses a point-to-multipoint wireless display method comprising steps of establishing connection between a data processing device and multiple display devices, acquiring pixel data, generating pixel data packets and transmitting the pixel data packets over the air in a multicast manner at the data processing device side, receiving the multicast data packets over the air, unpacketizing the data packets in accordance with a multicast protocol and restoring the pixel data from the multicast data packets at the display device side, and performing display output according to the pixel data. Preferably, the transmitting rate at the data processing device side can be determined according to signal strength, and the display devices can be divided into several multicast groups.