Display Device Connector Role Switching for Signal Collision
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Solution Overview
Problem
Existing display devices require separate cables for image signals and power, leading to inconvenience in installation and use, as simultaneous supply of different types of image signals and power through a single connector can cause collisions.
Innovation Solution
A display device with multiple connectors that includes control units to process image and power signals, a power management unit to measure and distribute power, and a display unit that receives and displays signals from either connector, allowing for real-time adjustment of power and image signal roles to prevent collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple types of power and image signals are supplied through a single connector, then cable convenience is improved, but signal collision problems occur
Solution Approach 1:
The patent implements dynamic role assignment where connectors can switch between power supply mode and image signal transmission mode in real-time. The control unit dynamically determines the role of each connector based on current operational needs, allowing the system to adapt between different signal types without physical cable changes, thus preventing signal collision while maintaining cable convenience.
Solution Approach 2:
The system performs preliminary role determination before actual signal transmission. The control unit pre-assigns roles to connectors based on detected signal types and operational requirements, ensuring that power and image signals are routed through appropriate channels before collision can occur, thereby maintaining both convenience and reliability.
2Reliability
If separate cables are used for image signals and power, then signal collision is prevented, but installation convenience deteriorates
Solution Approach 1:
The patent makes connectors universal by enabling them to handle multiple functions - both power supply and image signal transmission - within a single connector interface. The control unit manages the multi-functionality by dynamically assigning roles, allowing one connector to serve different purposes at different times, thus eliminating the need for separate cables while preventing signal collision through intelligent management.
3Reliability
If real-time role adjustment is implemented, then signal collision is prevented, but device complexity increases
Solution Approach 1:
The control unit implements self-service by autonomously determining the role of each connector based on detected signal types and operational requirements. The system automatically switches between power supply mode and image signal transmission mode without requiring complex external control mechanisms, thereby preventing signal collision while minimizing the increase in device complexity through intelligent self-management.
Data Source
AI summary
A display device includes a first connector which receives a first image signal and first driving power, a second connector which receives a second image signal and second driving power, a first control unit which processes the first image signal and the first driving power, a second control unit which processes the second image signal and the second driving power, a power management unit which receives the first and second driving powers from the first control unit and the second control unit, measures the first and second driving powers, and provides information about the first driving power and information about the second driving power to the first and second control units, and a display unit which receives one of the first and second image signals from one of the first and second control units and displays one of the first and second image signals.