Single LED Status Indication for Network Devices
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Solution Overview
Problem
Network-enabled devices face challenges in efficiently conveying multiple operational states due to limited space and the need for minimalist designs, as conventional methods rely on separate LEDs for network and device states, which are often binary and lack brightness control, making it difficult to integrate multiple indicators in compact devices.
Innovation Solution
The CPU or microcontroller controls a single status LED using pulse-width modulation (PWM) or digital-to-analog output lines to simultaneously indicate both network and device states through varying brightness and patterns, allowing for a combined indication of operational dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If separate LEDs are used for network and device states, then clear status indication is achieved, but device size and component count increase
Solution Approach 1:
The patent combines separate network status LED and device state LED into a single unified LED that can indicate both types of status information. The controller multiplexes the LED by controlling brightness levels and blinking patterns to differentiate between network status (link status, speed, duplex) and device state (power, network activity, error conditions), thereby reducing component count while maintaining clear status indication.
Solution Approach 2:
The single LED is designed to perform multiple functions: indicating network status (connection state, speed, duplex mode), device state (power status, network activity, errors), and providing visual feedback for both wired and wireless network modes. This multi-functional approach eliminates the need for separate dedicated LEDs for each status type.
2Ease of manufacture
If binary LED control is used, then implementation simplicity is maintained, but information conveyance capability is limited
Solution Approach 1:
The patent extends LED control beyond simple binary on/off states by introducing variable brightness levels and dynamic blinking patterns. The controller adjusts the LED's brightness and temporal characteristics to encode different status information, such as using different blink rates for different error conditions or varying brightness to indicate network speed and duplex mode, thereby conveying rich information while maintaining relatively simple PWM-based control implementation.
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
This approach reduces device size, cost, and complexity by enabling the simultaneous display of multiple operational states on a single LED, enhancing user information without increasing component count or design complexity.
Implementation Method 1
a first light indicator, such as a light-emitting diode (LED), or a first set of light indicators
Data Source
AI summary
A network-enabled device is provided. The provided network-enabled device includes at least one light indicator, and an electronic circuit capable of controlling brightness of said light indicator and driving said light indicator in a manner that allows simultaneous indication of at least a first dimension and a second dimension of said network-enabled device's operational state on said at least one light indicator using at least a first method and a second method of status indication. The present invention reduces the size, cost, and complexity—both internal and aesthetic—of network-enabled devices by combining the functions of the network LED (or a set thereof) and the device LED (or a set thereof) in a single status LED (or a set thereof).