Unified LOM Subsystem Integrating PoE Controller
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Solution Overview
Problem
Integrating Power over Ethernet (PoE) functionality into conventional personal computing devices requires extensive hardware and software modifications, posing challenges in accessing and managing PoE subsystems effectively.
Innovation Solution
A unified Local Area Network-On-Motherboard (LOM) subsystem that combines the functionality of a powered device controller with the LAN-On-Motherboard, allowing for seamless integration of PoE into personal computing devices by managing operational parameters and power requirements using existing software drivers and APIs, eliminating the need for new drivers and interfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If PoE functionality is integrated into conventional personal computing devices using separate PD controller and LOM, then PoE capability is achieved, but device complexity and software modification requirements increase
Solution Approach 1:
The patent combines the PD controller and LOM into a unified LOM subsystem that integrates powered device functionality with local area network functionality. This merging eliminates the need for separate hardware components and reduces software complexity by using existing software drivers and APIs that the unified LOM can access through standard interfaces, thereby achieving PoE capability without extensive modifications to conventional personal computing devices
2Adaptability or versatility
If separate PD controller and LOM are used, then PoE functionality is implemented, but software driver and API complexity increases
Solution Approach 1:
The unified LOM subsystem provides multiple functions including both network communication and power management capabilities through a single interface. This universal design allows the system to operate with existing software drivers and APIs without requiring separate software stacks for PoE control, thereby maintaining ease of operation while achieving PoE functionality
3Productivity
If unified LOM subsystem is used, then integration efficiency is improved, but hardware architecture must be restructured
Solution Approach 1:
The unified LOM subsystem merges previously separate PD controller and LOM components into a single integrated unit. This consolidation improves integration efficiency by reducing the number of components and interfaces, while the internal architecture of the unified LOM handles the complexity of power and data path management, thereby achieving better productivity without proportionally increasing overall device complexity
Data Source
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AI summary
A Power-over-Ethernet (PoE) communication system dynamically provides power and data communications over a communications link. In a computing environment made up of one or more personal computing devices (PCD) and/or one or more powered devices (PD), power source equipment (PSE) determines an allocated amount of power to be supplied to each device. The personal computing devices include a unified LAN-On-Motherboard (LOM) that combines the functionality of a powered device (PD) controller of a conventional PD and a LOM of a conventional personal computing device into a single unified subsystem. This allows the personal computing devices to use the existing hardware architecture and software architecture, such as software drivers and Access Protocol Interfaces (API), with few modifications to implement PoE. Further, the personal computing devices provide the power source equipment with access to some of the operational parameters, such as the voltage and the current of the personal computing device, using a communication via the data link layer, also referred to as layer two in the Open System Interconnection (OSI) networking model. Additionally, the power source equipment may dynamically manage the power requirements for the personal computing devices using the data link layer.