Wireless Display System Using H.264 Compression
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Solution Overview
Problem
Current multi-display technologies face challenges in supporting high-quality, real-time video transmission due to limited bandwidth, leading to degraded screen quality and increased computational load, especially when using IEEE802.11 wireless technology, and existing solutions for USB/PCIe to VGA/DVI/Displayport conversion are not mature.
Innovation Solution
A display system comprising a data transmitting apparatus in a computer that collects and encodes screen and audio data, and a data receiving apparatus that decodes and converts the data into VGA/DVI format, using compression and decompression algorithms, and supports multi-session functionality, with the ability to transmit via USB/PCIe or UWB, utilizing low-cost embedded CPU, FPGA, or chip for efficient data processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If IEEE802.11 wireless technology is used for video transmission, then wireless display functionality is achieved, but bandwidth is limited causing degraded screen quality and color distortion
Solution Approach 1:
The patent changes the transmission parameter from uncompressed video data to compressed video data using H.264 encoding. This parameter change enables high-quality video transmission over wireless IEEE802.11 bandwidth by reducing the data volume while maintaining visual quality, thus resolving the contradiction between wireless adaptability and screen quality.
Solution Approach 2:
The patent introduces an intermediary compression mechanism (H.264 encoder/decoder) between the video source and the wireless transmission channel. This intermediary processes the video data to optimize it for transmission over the limited bandwidth channel, enabling quality preservation without requiring increased bandwidth.
2Productivity
If deeply lossy compression scheme is employed to overcome bandwidth limits, then video transmission is enabled, but screen quality is degraded and image cannot synchronize with original
Solution Approach 1:
The patent changes the compression parameter from lossy to lossless (H.264), which maintains image quality while enabling wireless transmission. This parameter change allows the system to achieve both productivity (video transmission capability) and manufacturing precision (image quality synchronization).
3Adaptability or versatility
If wireless video transmission is implemented, then remote display is achieved, but computational load increases affecting system performance
Solution Approach 1:
The patent introduces compression algorithms (H.264 encoder/decoder) as intermediaries that handle the computational burden of video processing. By offloading the compression tasks to dedicated hardware modules, the system achieves remote display functionality while minimizing the impact on overall system performance.
4Device complexity
If USB docking station is used for interface integration, then interface complexity is reduced, but no mature solution exists for USB/PCIe to VGA/DVI/Displayport conversion
Solution Approach 1:
The patent introduces a video conversion module as an intermediary component that bridges the USB/PCIe interface and VGA/DVI/Displayport interfaces. This module handles the complex signal conversion tasks, allowing the docking station to maintain simple USB interfaces while supporting multiple display output formats through the intermediary conversion hardware.
Data Source
AI summary
A display system and method are disclosed. The system comprises a data transmitting apparatus built in a computer and a data receiving apparatus connected to a remote VGA/DVI display device, in which the data transmitting apparatus comprises a collecting unit for collecting screen data and/or audio data in video signals and a local control unit for encoding said screen data and/or audio data and transmitting said encoded screen data and/or audio data; the data receiving apparatus comprises a remote control unit for controlling the reception of said screen data and/or audio data and decoding it, a buffer unit for controlling the audio/video data decoded by the remote control unit to be placed into a memory for buffering, and an output unit for converting the buffered screen data and/or audio data into a format supported by the VGA/DVI display device and/or audio format.