HDMI Type D Receptacle Dual Power Terminal Design
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Solution Overview
Problem
The HDMI standard's Type D connectors, used in mobile devices, have smaller dimensions and cannot accommodate large current power supply due to pin width limitations, making it difficult to receive power from stationary apparatuses while maintaining compatibility with existing connectors.
Innovation Solution
Incorporating a second power supply terminal with greater current capacity than the first, positioned on the end surface of a flat plate, which extends in the direction of plug insertion and has a wider width, ensuring a larger contact area and allowing for power reception or supply from external apparatuses without modifying the existing interface function.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If Type D connectors with smaller dimensions are used in mobile apparatuses, then the apparatus size is reduced and portability is improved, but the pin width becomes insufficient to accommodate large current power supply
Solution Approach 1:
The power supply function is segmented into two separate terminals: a first power supply terminal for small current (up to 55mA) and a second power supply terminal for large current. This segmentation allows the connector to support both low-power and high-power applications simultaneously, resolving the contradiction between small size and power capacity.
Solution Approach 2:
The second power supply terminal is positioned on the end surface of the flat plate, which is a different spatial dimension from the first power supply terminal located on the surface. This dimensional change allows the larger terminal to be accommodated without interfering with the compact surface layout, enabling large current capacity while maintaining small overall connector dimensions.
2Power
If a second power supply terminal with greater current capacity is added to the receptacle, then power supply capability is improved, but the device complexity increases
Solution Approach 1:
The receptacle is designed with multi-functionality to handle both small current (first power supply terminal) and large current (second power supply terminal) applications. By integrating both terminals into a single receptacle structure, the device achieves universal power supply capability without requiring separate connectors, thereby limiting the increase in device complexity.
Solution Approach 2:
The second power supply terminal is positioned on the end surface of the flat plate rather than on the main surface. This spatial arrangement in another dimension minimizes the increase in device complexity by efficiently utilizing available space without requiring significant structural modifications to the existing receptacle design.
3Area of moving object
If the second power supply terminal is positioned on the end surface with greater width, then the contact area is increased for better current reception, but the manufacturing precision requirements increase
Solution Approach 1:
The second power supply terminal is positioned on the end surface of the flat plate, utilizing the Z-dimension (thickness direction) rather than only the X-Y plane. This dimensional change increases the available area for the terminal while reducing the precision requirements for lateral positioning, as the terminal can extend along the thickness direction to achieve adequate contact area.
Data Source
AI summary
To extend an interface function. Provided is an electronic apparatus including: a receptacle configured to connect to a plug of a cable for connecting the electronic apparatus to an external apparatus. The receptacle includes a first power supply terminal, and a second power supply terminal having a greater current capacity than a current capacity of the first power supply terminal. For example, in the receptacle, the first power supply terminal is provided on a surface of a flat plate having a predetermined thickness, extends in a direction in which the plug is inserted, and has a first width, and the second power supply terminal is provided on an end surface of the flat plate, extends in the direction in which the plug is inserted, and has a width greater than the first width.