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A METHOD OF TROUBLESHOOTING USING MONO-COLOR LED

IP.com Disclosure Number: IPCOM000238502D
Publication Date: 2014-Aug-29
Document File: 5 page(s) / 119K

Publishing Venue

The IP.com Prior Art Database

Related People

Ben Wu: AUTHOR [+3]

Abstract

A solution is presented herein that replaces multiple LEDs with one LED, and uses numeric codes transmitted over the LEDs by a suitable modulation scheme to replace multiple LEDs and increase the amount of information that can be conveyed. These codes are then read by an application that converts these codes to a message for the operator or user.

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A METHOD OF TROUBLESHOOTING USING MONO-COLOR LED

AUTHORS:

Ben Wu

Congde Luo

Yong Yang

CISCO SYSTEMS, INC.

ABSTRACT

    A solution is presented herein that replaces multiple LEDs with one LED, and uses numeric codes transmitted over the LEDs by a suitable modulation scheme to replace multiple LEDs and increase the amount of information that can be conveyed. These codes are then read by an application that converts these codes to a message for the operator or user.

DETAILED DESCRIPTION

    There is a challenge to improve the level of diagnostic information that can be signaled by a device, while reducing the Bill of Materials (BoM) required to support this signaling. Currently, the light emitting diode (LED) is the main way a set-top box (STB) conveys diagnostic messages for some conditions. Unfortunately, a single LED can only convey limited information, and it can be difficult to understand the information it is attempting to convey. As a result, one solution is to use multiple LEDs in order to convey the status of a device.

    Another problem exists when a device fails or encounters a technical issue. The user troubleshoots the cause of the issue by interpreting blinking LEDs and then checking a user manual or reference source. This is prone for errors, time-consuming and inconvenient, and also very limited in the information it can provide.

    Presented herein is a solution that replaces multiple LEDs with one LED, and uses numeric codes transmitted by the LEDs via a suitable modulation scheme to replace multiple LEDs and increase the amount of information that can be conveyed. These codes

Copyright 2014 Cisco Systems, Inc.

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are then read by an application that converts them to a useful message for the operator or user.

    By controlling the power on or off, the LED has two states, light and dark, which can correspond to 1 and 0, respectively. If a camera of a smartphone or other user device captures these two states, one mono-color LED can convey an appreciable number of bits data per second according to the frames per second (capture rate) of the camera. Other means of signaling the data of LEDs are equally applicable. By capturing by the LED blinking with a camera, faster and more complex patterns can be used that would not be detectable by a human eye.

    These techniques reuse the extreme cost-effectiveness of legacy mono-colo...