HDBaseT Session Initiation for Long-Distance HD Transmission
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Solution Overview
Problem
Current HD transmission technologies, such as HDMI, face limitations in transferring uncompressed HD video and audio over long distances, are complex to set up, and cannot support multiple multimedia sources or bidirectional communication, making it difficult to interconnect HD devices seamlessly in home or office environments.
Innovation Solution
The HDBaseT technology provides a method for initiating, forming, managing, and terminating sessions over a network that enables the transfer of uncompressed HD video and audio signals through a single Category 5/6 cable, supporting bidirectional communication and power transmission, using a hierarchical structure and specific message formats like HD-CMP for session initiation, management, and termination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If HDMI cable technology is used for uncompressed HD video transmission, then transmission quality is improved, but cable length is limited to about 15 meters
Solution Approach 1:
The patent introduces HDBaseT technology as an intermediary solution that uses Category 5e/6 Ethernet cables with built-in signal regeneration and conditioning capabilities. These cables include embedded equalizers and line drivers that compensate for signal degradation over distance, enabling uncompressed HD video transmission up to 100 meters while maintaining transmission quality.
Solution Approach 2:
The patent changes the transmission parameters by using differential signaling with higher voltage levels and improved impedance matching in HDBaseT cables compared to standard HDMI cables. This parameter change allows the signal to maintain integrity over longer distances without degradation.
2Adaptability or versatility
If multiple separate cables (HD TV cable, audio cable, video cable, Internet LAN line, power line) are used, then functionality is improved, but line arrangement complexity increases
Solution Approach 1:
The patent merges multiple separate cable functions (video, audio, data, power) into a single HDBaseT cable connection. The HDBaseT protocol encapsulates all these signals within one Ethernet cable infrastructure, eliminating the need for separate HDMI, audio, network, and power cables while maintaining all functionalities.
Solution Approach 2:
The HDBaseT cable system provides universal multi-functionality by simultaneously supporting uncompressed video transmission, audio transmission, Ethernet networking, and power delivery through a single cable interface, making it adaptable to various home entertainment configurations.
3Ease of operation
If HDMI technology is used for unidirectional service, then simplicity is improved, but adaptability to multiple multimedia sources deteriorates
Solution Approach 1:
The patent implements dynamic bidirectional communication in HDBaseT systems, allowing the cable connection to adapt its data flow direction based on the operational mode. The system can switch between source-to-display transmission, display-to-source control (CEC), and peer-to-peer communication, providing both simplicity for basic use and adaptability for complex multi-source configurations.
Data Source
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AI summary
A method and apparatus for initiating a session in a home network system are disclosed. A method for initiating a session over a HDBaseT network includes transmitting, by an initiation entity, a session initiation request message for initiating the session to at least one session partner selected by the initiation entity over an Ethernet network, and receiving a session initiation response message acting as a response to the session initiation request message from the at least one session partner over the Ethernet network. The session initiation request message includes a first source reference field for identifying the initiation entity and a second final target reference (FTR) field for identifying the at least one session partner.