Dongle Module Multiplexing HDMI Signals Over Single Network Cable
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Solution Overview
Problem
Current matrix KVM switch and signal extender systems incur high costs due to the need for multiple network cables to transmit HDMI signals, making system installation inconvenient.
Innovation Solution
A system that transmits digital video differential signals, including HDMI, DVI, and DisplayPort, over a single network cable using dongle modules, console modules, local-end modules, and remote-end modules, which transform and synthesize signals to reduce the number of cables required.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If HDMI signal is transmitted via HDMI cable, then transmission quality is ensured, but system cost increases significantly
Solution Approach 1:
The patent combines multiple signal types (HDMI video, audio, keyboard, mouse, USB) into a single network cable transmission channel. The dongle module multiplexes these different signal types onto one Ethernet cable, eliminating the need for separate HDMI cables and reducing overall system cost while maintaining transmission quality through dedicated signal processing for each type.
Solution Approach 2:
The network cable is made universal by enabling it to carry multiple function types simultaneously - video transmission, audio transmission, and peripheral device control (keyboard, mouse, USB). This multi-functional approach replaces the need for specialized HDMI cables with a standard network cable that can handle all signal types through protocol multiplexing.
2Length of stationary object
If multiple network cables are used to transmit HDMI signal, then transmission distance is extended, but installation convenience deteriorates
Solution Approach 1:
The patent merges multiple signal streams (video, audio, control signals) into a single network cable connection. By using signal multiplexing technology, the system achieves extended transmission distance through the network cable's inherent capabilities while maintaining installation simplicity, as only one cable needs to be connected between the host and display device.
Solution Approach 2:
The dongle module acts as an intermediary device that interfaces between the host computer and the network cable. It converts various signal types into network-compatible formats, enabling long-distance transmission through standard Ethernet infrastructure while keeping the installation process simple and plug-and-play.
Data Source
AI summary
A dongle module including a digital video differential signal input terminal, a keyboard control signal I/O terminal, a mouse control signal I/O terminal, a processing unit, a transforming unit, a synthesizer unit and a signal I/O terminal is provided. The digital video differential input terminal receives a digital video differential signal, which includes multiple differential data signals, a differential clock signal and multiple low-frequency signals. The processing unit processes the low-frequency signal, a keyboard control signal and a mouse control signal to obtain a digital hybrid data. The transforming unit transforms the digital hybrid data into a differential hybrid signal. The synthesizer unit receives and composes the differential clock signal and the differential hybrid signal into a differential synthesized signal. The signal I/O terminal receives and outputs the differential data signals and the differential synthesized signal.