Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Control device and control method of LED (light-emitting diode) lamps of ports of Ethernet exchange

A technology of LED lamps and control devices, applied in lighting devices, lamp circuit layout, light sources, etc., can solve the problems of increasing costs and achieve the effect of reducing costs

Inactive Publication Date: 2015-04-01
PHICOMM (SHANGHAI) CO LTD
View PDF2 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If CPLD is used to control LED, it will increase the cost

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Control device and control method of LED (light-emitting diode) lamps of ports of Ethernet exchange
  • Control device and control method of LED (light-emitting diode) lamps of ports of Ethernet exchange
  • Control device and control method of LED (light-emitting diode) lamps of ports of Ethernet exchange

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] The present invention will be further elaborated below by describing a preferred specific embodiment in detail in conjunction with the accompanying drawings.

[0035] like figure 1 As shown, a control device of an Ethernet switch port LED light, the device includes: a CPU; several decoders 1, whose input terminals are connected to the IO ports of the CPU, and output high and low levels, the translator in this embodiment The model of the decoder is 74HC138; the input terminals of several groups of LED lights are respectively connected with the output terminals of the decoder 1; Control the display status of the LED light.

[0036] like figure 2 As shown, the IO port of the CPU includes the selection output port (IO0-IO2) and the on-off control port (IO3), and the input port of decoder 1 is respectively connected to the selection output port and the on-off control port of the CPU, namely The A0-A2 port of the CPU is connected to the IO0-IO2 port of the CPU, and the E3...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a control device and a control method of LED (light-emitting diode) lamps of ports of an Ethernet exchange. The device comprises a CPU (central processing unit), a plurality of decoders, and a plurality of groups LED lamps, wherein input ends of the decoders are connected with IO (input / output) ports of the CPU and output high and low levels; input ends of the LED lamps are connected with output ends of the decoders; and the CPU transmits an LED control instruction to the decoders to allow different ports of the decoders to output the high and low levels and control display states of the LED lamps. According to the device and the method, a CPLD (complex programmable logic device) is not required, the IO ports of the CPU are decreased, and the cost is lowered.

Description

technical field [0001] The invention relates to the field of communication indication, in particular to a control device and a control method for an LED light at an Ethernet switch port. Background technique [0002] Each port of an Ethernet switch generally has an LED light to indicate the working status of the port. The working status of the Ethernet port generally has Link / Active / Speed. If a switch has 48 ports, and each port has two LED lights, a total of 96 LED lights are needed. If you have 1 LED light per port, you need 48 LED lights. [0003] The existing switch LED control scheme has CPLD or CPU direct control. That is, each CPLD or CPU pin controls an LED to turn on or off or flash at different frequencies according to the port working status of the switch to indicate the working status of the port. [0004] In the existing technical solutions, if the CPU directly controls the LED on, off, and flickering, it needs to occupy a large number of IO ports of the CPU,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02
Inventor 王振
Owner PHICOMM (SHANGHAI) CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com