USB Type-C DisplayPort Alternate Mode Connector Orientation Detection

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing USB TYPE-C devices face hardware and software burdens due to the need for dedicated pins and complex firmware to control multiplexers and Power Distribution (PD) controllers, especially in scenarios involving remote daughter cards or long cables.

Innovation Solution

A device determines the DISPLAYPORT mode and orientation of a USB TYPE-C connector plug, allowing a multiplexer to automatically multiplex DISPLAYPORT transmissions based on the plug orientation, thereby reducing the hardware and software burdens on PD controllers and multiplexers.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a PD controller is used to control the multiplexer through a control interface or configuration pins, then the USB TYPE-C device can successfully perform operations, but hardware and software burdens increase

Engineering Contradiction:

Improveoperation successVSAvoidhardware and software burden

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent extracts the detection function from the PD controller by introducing a separate detection device that autonomously determines DISPLAYPORT mode and connector orientation. This removes the burden of control interface firmware and configuration pin management from the PD controller, reducing hardware and software complexity while maintaining operational reliability.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces a detection device as an intermediary component that sits between the connector and the multiplexer/PD controller. This detection device automatically determines operational parameters and provides this information to the multiplexer, eliminating the need for complex control interfaces and configuration pin negotiations between the PD controller and multiplexer.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If dedicated pins are made available for the control interface on both the PD controller and the multiplexer, then control functionality is enabled, but hardware complexity and cabling requirements increase

Engineering Contradiction:

Improvecontrol functionalityVSAvoiddedicated pins and cabling

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The detection device performs multiple functions: it detects DISPLAYPORT mode, determines connector orientation, and provides this information to the multiplexer. By consolidating these detection and control functions into a single multi-functional component, the patent eliminates the need for separate dedicated control pins and configuration pins on both the PD controller and multiplexer, reducing hardware complexity and cabling requirements.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If long cabling is used to connect the PD controller and the multiplexer in remote daughter cards or cables, then connectivity is achieved, but cost and efficiency decrease

Engineering Contradiction:

Improveremote connectivityVSAvoidcost and efficiency

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The patent segments the system into independent functional modules: a detection device that autonomously determines operational parameters, and a multiplexer that uses this information to configure signal routing. This segmentation allows each module to operate independently with minimal interconnection requirements, eliminating the need for long cabling between remote components while maintaining adaptability for remote daughter cards and cable configurations.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS20250181543A1Detection of displayport alternate mode communication and connector plug orientation without use of a power distribution controller

Publication Date: 2025.06.05 TEXAS INSTRUMENTS INC

AI summary

This disclosure generally relates to USB TYPE-C, and, in particular, DISPLAYPORT Alternate Mode communication in a USB TYPE-C environment. In one embodiment, a device determines a DISPLAYPORT mode and determines an orientation of a USB TYPE-C connector plug. A multiplexer multiplexes a DISPLAYPORT transmission based in part on the determined orientation of the USB TYPE-C connector plug.