Dual-mode DisplayPort Signal Packetization for Legacy Interface Compatibility
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Solution Overview
Problem
Existing systems do not effectively enable Dual-mode DisplayPort devices to operate over various link mediums and communication protocols, particularly when interfacing with legacy DVI and HDMI devices, and lack a substitute method for timing control without dedicated wires.
Innovation Solution
The system packetizes and communicates Dual-mode signals, including Display Data Channel (DDC), Hot Plug Detect (HPD), and Cable Adapter Detect (CA_DET), over various link mediums, using dual simplex communication links, allowing these signals to coexist with foreign device information and accommodate transmission delays, without requiring changes to existing devices or adapters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If DisplayPort Dual-mode signals are transmitted over traditional dedicated wires, then timing control is achieved, but device complexity increases and adaptability to various link mediums is reduced
Solution Approach 1:
The patent applies universality by enabling the DisplayPort Dual-mode signals to traverse diverse link mediums (optical, electrical, wireless) through a unified packetization approach. The system uses a common communication protocol that can handle multiple link types without requiring separate dedicated wire infrastructure for each medium, thus reducing device complexity while maintaining adaptability.
Solution Approach 2:
The patent introduces packetization as an intermediary mechanism between the DisplayPort Dual-mode signals and the various link mediums. This packetization layer acts as a mediator that translates timing control requirements into packet-based communication, allowing signals to be transmitted over optical links, wireless channels, or electrical connections without direct wire-to-wire timing synchronization.
2Adaptability or versatility
If Dual-mode signals are packetized and transmitted over shared link mediums, then adaptability to foreign devices is improved, but data integrity and transmission reliability may be compromised
Solution Approach 1:
The patent applies segmentation by dividing the DisplayPort Dual-mode signals into discrete packets that can be independently transmitted over shared link mediums. This packetization allows the signals to be segmented, transmitted through various media including optical links and wireless channels, and reassembled at the destination, maintaining data integrity while enabling connectivity with foreign devices.
Solution Approach 2:
The patent implements feedback mechanisms within the packetized communication system to ensure data integrity. The system includes acknowledgment packets and error checking protocols that allow receiving devices to confirm successful reception and request retransmission if necessary, thereby maintaining reliability even when using shared link mediums with potential interference.
3Adaptability or versatility
If transmission distance is increased beyond traditional DisplayPort limits, then system versatility is improved, but signal degradation and timing accuracy deteriorate
Solution Approach 1:
The patent replaces the traditional mechanical wire-based timing synchronization system with a packetized communication system that can operate over optical links and wireless channels. This substitution allows signals to be transmitted over much longer distances without the signal degradation and timing accuracy issues inherent in traditional copper wire connections, as optical and wireless transmissions can maintain synchronization through protocol-based timing control.
Data Source
AI summary
A system and method for communicating DVI (digital visual interface) and HDMI (high-definition multimedia interface) information is provided. The system includes a local unit operable to produce a downstream request packet in reaction to received DVI or HDMI information from a video source device and to transmit the request packet to a remote unit via a first simplex channel of a communications link. The remote unit operates to produce an upstream reply packet in reaction to received DVI or HDMI information by the remote unit from a video sink device and to transmit the reply packet to the local unit via a communications link. The system allows greater distances and allows various communications mediums to be used between the source and sink, and can communicate DVI and HDMI information and other information via a variety of different communications links.