USB Display Control System for Multi-Display Compatibility

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Solution Overview

Problem

Conventional display control systems face compatibility issues due to non-universal graphic driver circuits and are inefficient when adjusting multiple displays simultaneously, as they rely on time-consuming and inconvenient control signal transmission through DDC interfaces like DisplayPort or HDMI.

Innovation Solution

Implementing a display control system that uses a USB interface for control signal transmission, featuring a display panel, a USB hub, and a display control circuit, allowing for stable and backward-compatible communication between electronic devices and displays, enabling simultaneous control of multiple displays through a networked USB interface.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If DDC interface (DisplayPort/HDMI) is used for control signal transmission, then display control function is achieved, but compatibility is poor and control of multiple displays is time-consuming

Engineering Contradiction:

ImprovecompatibilityVSAvoidtime for adjusting multiple displays

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The patent applies universality by using USB interface for display control, which is a standardized, widely compatible interface that can control multiple displays simultaneously. The USB hub in the display control circuit enables multi-device connectivity, allowing a single electronic device to control multiple displays through a unified interface standard, thereby improving both compatibility and efficiency.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Ease of operation

If graphic driver circuit with DDC interface is used, then display control is enabled, but hardware compatibility and firmware stability are poor due to frequent updates and non-universality

Engineering Contradiction:

Improveconvenience of display controlVSAvoidfirmware stability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent replaces the complex graphic driver circuit system with a simpler USB-based control system. By substituting the DDC interface mechanism with USB interface, the system leverages USB's mature, stable protocol and hardware, eliminating the need for frequent firmware updates and non-universal graphic driver circuits while maintaining ease of operation.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS12051356B2Display control system and display with universal serial bus (USB) control

Publication Date: 2024.07.30 REALTEK SEMICON CORP

AI summary

A display control system includes a display and an electronic device. The display includes a display panel, a USB hub, and a display control circuit. The USB hub receives a control signal in a first format through a USB interface. The display control circuit receives a control signal in a second format from the USB hub and controls the display panel according to the control signal in the second format. The electronic device includes an input device, a USB driver circuit, and a processor circuit. The input device generates an input signal. The USB driver circuit is electrically coupled to the USB hub of the display through the USB interface. The processor circuit generates an original control signal according to the input signal and controls the USB driver circuit to transmit the control signal in the first format through the USB interface.