Wireless Uncompressed Video Transmission via Dual-Channel Segmentation
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Solution Overview
Problem
Current wireless technologies lack the capability to efficiently transmit uncompressed high definition video data due to bandwidth limitations and interference issues, leading to reduced picture quality from compression and decompression processes.
Innovation Solution
A method and system for wireless communication of uncompressed audiovisual data using a coordinator device that manages connection control information and minimizes control message exchanges, employing a high-rate channel for video transmission and a low-rate channel for control signals, with beamforming technology to support multi-Gbps bandwidth and error correction mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If uncompressed HD video is transmitted over wireless channels, then video quality is maintained, but bandwidth requirements increase significantly
Solution Approach 1:
The patent segments the wireless communication into two distinct channels: a high-rate channel for transmitting uncompressed video data and a low-rate channel for control signals. This segmentation allows the video transmission to utilize the full bandwidth capacity for data while control overhead uses minimal bandwidth, resolving the contradiction between maintaining video quality and managing bandwidth consumption.
2Measurement precision
If more control messages are exchanged for connection control, then connection accuracy improves, but network throughput decreases
Solution Approach 1:
The patent extracts control signal transmission from the main video data channel and places it on a separate low-rate channel. This extraction allows connection control messages to be exchanged accurately without consuming bandwidth from the high-rate video channel, thereby maintaining both connection accuracy and network throughput for video data.
Solution Approach 2:
The patent introduces a coordinator device as an intermediary that manages connection control between devices. The coordinator handles authentication, connection establishment, and control message routing, reducing the number of direct control exchanges between video devices and minimizing overhead on the network.
3Ease of operation
If wireless technologies are used for HD video transmission, then cable-free connectivity is achieved, but interference issues arise
Solution Approach 1:
The coordinator device acts as a central intermediary that manages wireless connections and implements error correction mechanisms. It coordinates transmission timing, handles retransmissions, and manages error correction codes, thereby maintaining signal reliability while preserving wireless connectivity benefits.
4Productivity
If compression is applied to reduce bandwidth, then transmission efficiency improves, but picture quality deteriorates
Solution Approach 1:
The patent segments the communication channels so that uncompressed video data transmitted over the high-rate channel achieves both high transmission efficiency (utilizing full bandwidth capacity) and high picture quality (no compression artifacts), while control overhead is handled separately on the low-rate channel.
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AI summary
A system and method for wireless communication of uncompressed audiovisual data are disclosed. One embodiment of the system includes a first device and a second device wirelessly connectable to each other. The first device is configured to transmit a connection control information request from the first device to the second device, wherein the connection control information request includes a request for connection control information of the second device. The connection control information includes at least one of association information, wireless video area network (WVAN) information, device capability information, audio video (A/V) format capability information, bandwidth information, A/V stream start, stop or pause command information, and device control information. The request further includes connection control information of the first device. The second device is configured to transmit a connection control information response from the second device to the first device. The connection control information response includes the connection control information of the second device.