HDMI Repeater Power Switching for Signal Integrity
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Solution Overview
Problem
In digital image systems using HDMI or DVI formats, the transmission of digital image data is disrupted when the external power supply of the transmission/reception reinforcement device drops or is interrupted, limiting the system's ability to maintain smooth data transmission over longer distances.
Innovation Solution
Incorporating a power-supply switching unit within the transmission/reception reinforcement device that switches to an internal power supply when the external power supply falls below a predetermined voltage, ensuring continuous operation by using either external or internal power depending on availability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the transmission distance is extended beyond 10m, then the coverage area is improved, but the transmission reliability deteriorates due to signal degradation and power supply dependency
Solution Approach 1:
A repeater is introduced as an intermediary device between the host device and display device to regenerate and retransmit signals. The repeater includes signal regeneration units that restore degraded digital image signals and audio signals, ensuring reliable transmission over extended distances beyond the standard 10m limitation
Solution Approach 2:
The repeater is equipped with both external power supply terminals and internal power supply (battery) in advance. The system monitors external power supply status and automatically switches to internal power supply when external power is unavailable, cushioning against power supply interruptions before they affect transmission reliability
2Stability of the object's composition
If an external power supply is used for the repeater, then the operation stability is improved, but the system complexity increases due to power supply management
Solution Approach 1:
The external power supply system and internal power supply system are merged into a unified power management architecture. The power supply switching unit automatically selects between external and internal power sources based on availability, eliminating the need for manual intervention and reducing operational complexity despite having dual power sources
Solution Approach 2:
The power supply switching unit autonomously monitors external power supply status and performs automatic switching between power sources without user intervention. The system self-manages the complexity of dual power supply coordination, reducing the burden on users while maintaining operational stability
Data Source
AI summary
A digital image system which transmits digital image data, and more particularly, to a digital image system in a high definition multimedia interface (HDMI) format or a digital visual interface (DVI) format.