Wireless Video Display System with UWB Location Tracking
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Solution Overview
Problem
Current wireless video display systems cannot support high-resolution, full-rate refresh requirements for applications like PC monitors due to limitations in data transmission rates and indoor location tracking capabilities, especially with the use of narrowband wireless technologies.
Innovation Solution
A system that uses multiple transceivers and a computing device to derive the location of user interactions by transmitting and receiving location signals, allowing the modification of video content based on user position and orientation, utilizing ultra-wideband radio technology to split high-rate video streams into sub-streams for wireless transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If narrowband wireless technology is used for video transmission, then the system is simpler to implement, but the data transmission rate is insufficient for high-resolution displays
Solution Approach 1:
The patent divides the high-rate video data stream into multiple lower-rate sub-streams that can be transmitted simultaneously over narrowband wireless channels. Each sub-stream is assigned to a different transceiver or time slot, allowing the system to achieve the required aggregate data rate while maintaining compatibility with narrowband wireless technology constraints.
2Productivity
If multiple data streams are transmitted using co-located piconets, then the compound data rate increases, but the system complexity and interference management become more difficult
Solution Approach 1:
The patent merges multiple data streams into a unified transmission framework using a single synchronized clock reference. All transceivers operate under centralized coordination, sharing common timing and synchronization signals, which reduces the complexity of managing multiple independent piconets while maintaining high compound data rates.
3Device complexity
If wireless video transmission is implemented without location tracking, then the system is simpler, but user-aware interactions and positioning capabilities are lost
Solution Approach 1:
The patent makes the transceiver system multi-functional by enabling it to perform both video data transmission and location tracking using the same hardware infrastructure. The transceivers simultaneously handle video sub-stream transmission and exchange location signals, allowing the system to provide both high-rate video delivery and precise indoor positioning without adding separate dedicated tracking hardware.
4Productivity
If high-resolution video signals are transmitted over narrowband wireless channels, then bandwidth is limited, but the patent achieves full-rate refresh by using multiple transceivers with synchronized clocks
Solution Approach 1:
The patent implements a feedback mechanism where the computing device monitors the synchronization status of multiple transceivers and dynamically adjusts timing parameters to maintain synchronized operation. This feedback loop ensures that all transceivers remain coordinated, enabling reliable high-resolution video transmission at full refresh rates despite the complexity of managing multiple synchronized devices.
Data Source
AI summary
The present invention relates to a method and system for displaying a video signal in dependence on a user interaction. The system comprises a display for receiving the video signal, at least one transmitter for transmitting location signals, and at least three transceivers for receiving the location signals from the transmitter and for transmitting modified location signals. The geometric locations of the at least three transceivers are known to a computing device. The computing device is then able to derive a transmit location of the location signals based on the received modified location signals, wherein the computing device is adapted to modify the content of the video signal in response to the derived transmit location in dependence on the user interaction.