Media Converter for Thin-Profile Mobile Devices via Short-Reach Ethernet
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Solution Overview
Problem
Mobile computing devices with low-profile form factors face challenges in network connectivity due to the impracticality of conventional RJ-45 Ethernet ports, which are costly and require extensive circuitry for long-distance connections, and alternative protocol conversions introduce latency issues.
Innovation Solution
A media converter device with a low-profile Ethernet physical layer for mobile devices and a conventional RJ-45 Ethernet physical layer for network devices, using a bridge device to transfer traffic without protocol conversion, enabling cost-effective and latency-free Ethernet connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional RJ-45 Ethernet ports are used in mobile computing devices, then network connectivity is achieved, but the device profile becomes bulky and cost increases
Solution Approach 1:
The Ethernet connectivity function is segmented into a separate media converter device that connects to the mobile computing device via a low-profile port. This separates the bulky RJ-45 interface from the mobile device while maintaining Ethernet functionality through the media converter's conventional RJ-45 port.
Solution Approach 2:
A media converter device serves as an intermediary between the mobile computing device and the network infrastructure. It translates between the low-profile Ethernet interface of the mobile device and the conventional RJ-45 Ethernet standard used in networks, enabling connectivity without requiring the mobile device to have a bulky port.
2Ease of operation
If conventional RJ-45 Ethernet ports with long-distance circuitry are used, then network connectivity is achieved, but device cost and complexity increase
Solution Approach 1:
The mobile computing device is equipped with only the minimal circuitry required for short-reach, low-profile Ethernet connectivity. The media converter handles the more complex long-distance Ethernet circuitry and protocol requirements, allowing the mobile device to have simplified local quality while maintaining full Ethernet functionality through the converter.
3Ease of operation
If protocol conversion is used to enable Ethernet in low-profile devices, then connectivity is achieved, but latency increases
Solution Approach 1:
The media converter maintains Ethernet protocol homogeneity throughout the connection, using Ethernet physical layer devices on both the low-profile interface side and the RJ-45 interface side. This avoids protocol conversion entirely, allowing data to traverse the media converter at line rate without the latency penalties associated with protocol translation.
Data Source
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AI summary
A media converter to enable Ethernet in thin-profile mobile devices. The media converter can be designed to interface with a thin-profile mobile device via a short-reach Ethernet link and to interface with a network device via a conventional Ethernet link. Protocol conversion is therefore obviated, while accommodating a low-profile Ethernet port in the mobile device.