Multipurpose Connector Multiplexing Headset to HDMI via Switch
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Solution Overview
Problem
Handheld electronic devices face challenges in accommodating high-definition video interfaces due to size constraints and increased manufacturing costs associated with high-density HDMI connectors, which are not efficiently utilized on these devices.
Innovation Solution
A multipurpose connector that multiplexes a headset interface into a high-definition video/audio interface using a headset connector, selecting switch, and high-definition video/audio transceiver, allowing for the transmission of high-definition video and audio signals over a single pair of differential transmission lines, thereby reducing the physical size and interface count on handheld devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a Type C HDMI connector is used to achieve high-definition video transmission on handheld devices, then the transmission capability is improved, but the manufacturing precision requirement increases and reliability decreases due to high-density wiring
Solution Approach 1:
The patent applies universality by making the differential transmission lines serve multiple functions: they can transmit high-definition video/audio signals when connected to external displays, and transmit audio signals when connected to headsets. This allows a single interface structure to support both HDMI and headset functions, eliminating the need for separate dedicated interfaces for each function.
Solution Approach 2:
The patent applies dynamics by implementing a switching mechanism that dynamically changes the connection configuration based on the type of device connected. The switch can dynamically route the differential transmission lines to different destinations (HDMI transceiver or audio output module), allowing the system to adapt its behavior based on whether a display device or headset is detected.
2Adaptability or versatility
If more interfaces are added to handheld devices to support high-definition video output, then the functionality is improved, but the device size increases and manufacturing cost increases
Solution Approach 1:
The patent applies universality by designing the headset connector and differential transmission lines to serve dual purposes: supporting both traditional audio headset connections and high-definition video output connections. This multi-functional design eliminates the need for adding separate physical interfaces for HDMI output, thereby avoiding increased device size.
Solution Approach 2:
The patent applies merging by combining the headset interface functionality with the HDMI interface functionality into a single physical connector and transmission path. The headset connector, differential transmission lines, and switching mechanism are merged to create a unified interface that can handle both audio-only and video/audio signals, reducing the total number of interfaces required.
3Adaptability or versatility
If a Type C HDMI connector is used, then the high-definition video transmission is achieved, but the number of pluggable times decreases due to high-density wiring
Solution Approach 1:
The patent applies segmentation by separating the video transmission path and audio transmission path into different configurable routes using switches. The differential transmission lines are segmented into multiple possible destinations (HDMI transceiver or audio output module), allowing the system to route signals differently based on connection type. This reduces the complexity and density of wiring required in any single configuration.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables a compact high-definition video/audio interface on handheld devices without increasing the number of interfaces, improving manufacturing efficiency and reducing costs while maintaining high-definition video and audio transmission capabilities.
Implementation Method 1
The TMDS technology is a technology for transmitting signals by using a voltage difference between two pins (that is, differential transmission)
Data Source
AI summary
The present invention provides a multipurpose connector for multiplexing a headset interface into a high-definition video/audio input interface and a handheld device including the multipurpose connector. The multipurpose connector includes a headset connector, a selecting switch, a high-definition video/audio transceiver, and an audio output module. The headset connector includes a first audio terminal and a second audio terminal. The audio output module is configured to output an audio signal of the headset. The selecting switch includes first and second lines. When the selecting switch communicates with the first line, the first audio terminal and the second audio terminal are coupled to a pair of differential transmission lines respectively, and the pair of differential transmission lines is configured to transmit high-definition video/audio data output by the high-definition video/audio transceiver. When the selecting switch communicates with the second line, the first audio terminal is coupled to the audio output module.