WO2006081046A3 - Dual-mode detection of powered device in power over ethernet system - Google Patents

Dual-mode detection of powered device in power over ethernet system Download PDF

Info

Publication number
WO2006081046A3
WO2006081046A3 PCT/US2006/000343 US2006000343W WO2006081046A3 WO 2006081046 A3 WO2006081046 A3 WO 2006081046A3 US 2006000343 W US2006000343 W US 2006000343W WO 2006081046 A3 WO2006081046 A3 WO 2006081046A3
Authority
WO
WIPO (PCT)
Prior art keywords
powered device
dual
mode
power over
mode detection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2006/000343
Other languages
French (fr)
Other versions
WO2006081046A2 (en
Inventor
John Arthur Stineman
Jeffrey Lynn Heath
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Linear Technology LLC
Original Assignee
Linear Technology LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Linear Technology LLC filed Critical Linear Technology LLC
Priority to JP2007552156A priority Critical patent/JP4598084B2/en
Priority to EP06717528.1A priority patent/EP1842323B1/en
Priority to CN200680005472.XA priority patent/CN101124775B/en
Publication of WO2006081046A2 publication Critical patent/WO2006081046A2/en
Publication of WO2006081046A3 publication Critical patent/WO2006081046A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/44—Arrangements for feeding power to a repeater along the transmission line
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/35—Switches specially adapted for specific applications
    • H04L49/351—Switches specially adapted for specific applications for local area network [LAN], e.g. Ethernet switches
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/10—Current supply arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/12—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to underload or no-load

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)
  • Communication Control (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Power Sources (AREA)

Abstract

Novel circuitry and methodology for detecting a Powered Device (PD) in a system for providing power to the PD. PD detection circuitry detects the PD in a first mode by providing detection current to probe the PD, and in a second mode by providing detection voltage to probe the PD. A control circuit determines that the PD is a valid device if the PD is detected both in the first mode and in the second mode.
PCT/US2006/000343 2005-01-25 2006-01-09 Dual-mode detection of powered device in power over ethernet system Ceased WO2006081046A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2007552156A JP4598084B2 (en) 2005-01-25 2006-01-09 Dual-mode detection of power-receiving equipment in Power over Ethernet (registered trademark) system
EP06717528.1A EP1842323B1 (en) 2005-01-25 2006-01-09 Dual-mode detection of powered device in power over ethernet system
CN200680005472.XA CN101124775B (en) 2005-01-25 2006-01-09 Dual mode detection of powered devices in a power over ethernet system

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US64650905P 2005-01-25 2005-01-25
US60/646,509 2005-01-25
US11/252,624 2005-10-19
US11/252,624 US7613936B2 (en) 2005-01-25 2005-10-19 Dual-mode detection of powered device in power over ethernet system

Publications (2)

Publication Number Publication Date
WO2006081046A2 WO2006081046A2 (en) 2006-08-03
WO2006081046A3 true WO2006081046A3 (en) 2006-12-14

Family

ID=36696514

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/000343 Ceased WO2006081046A2 (en) 2005-01-25 2006-01-09 Dual-mode detection of powered device in power over ethernet system

Country Status (5)

Country Link
US (1) US7613936B2 (en)
EP (1) EP1842323B1 (en)
JP (1) JP4598084B2 (en)
KR (1) KR101214773B1 (en)
WO (1) WO2006081046A2 (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7711967B2 (en) 2006-01-17 2010-05-04 Broadcom Corporation Apparatus and method for multi-point detection in power-over ethernet detection mode
US7774628B2 (en) * 2006-05-25 2010-08-10 Foundry Networks, Inc. Enabling/disabling power-over-ethernet software subsystem in response to power supply status
US7631201B2 (en) 2006-05-25 2009-12-08 Foundry Networks, Inc. System software for managing power allocation to Ethernet ports in the absence of mutually exclusive detection and powering cycles in hardware
EP1903653B1 (en) * 2006-08-31 2018-09-26 Avago Technologies General IP (Singapore) Pte. Ltd. Over-voltage protection for power and data applications
US7557549B2 (en) * 2006-11-21 2009-07-07 Honeywell International Inc. Automatic output mode select for an actuator controller
US8250381B2 (en) 2007-03-30 2012-08-21 Brocade Communications Systems, Inc. Managing power allocation to ethernet ports in the absence of mutually exclusive detection and powering cycles in hardware
WO2008136028A1 (en) 2007-05-08 2008-11-13 Stmicroelectronics S.R.L. Method of discrimination of a device as powerable through a lan line and device for estimating electric parameters of a lan line
US8301922B2 (en) * 2009-07-31 2012-10-30 Broadcom Corporation System and method for policing bad powered devices in power over ethernet
AU2010326847A1 (en) * 2009-12-04 2012-06-21 Osram Ag A method for controlling the operation of an electronic converter, and a corresponding electronic converter, lighting system and software product
US9037876B2 (en) 2010-01-31 2015-05-19 Hewlett-Packard Development Company, L.P. Increasing leakage current of power source unit to adjust input resistance at network port for mitigating false detection as powered device
US20110219244A1 (en) * 2010-03-05 2011-09-08 Hsi-Mien Wu Power extracting system and a splitter
WO2012028979A1 (en) * 2010-09-02 2012-03-08 Koninklijke Philips Electronics N.V. Apparatus for powering an electrical consumer via a data connection.
TWI432740B (en) 2012-03-30 2014-04-01 Wistron Corp Test board, test system and test method for power over ethernet device
US9334063B2 (en) * 2012-09-10 2016-05-10 Rosemount Aerospace, Inc. Aircraft avionics tablet interface module
US9859951B2 (en) 2013-11-26 2018-01-02 Linear Technology Corporation Power over data lines detection and classification scheme
TWI584611B (en) * 2015-11-24 2017-05-21 九暘電子股份有限公司 Inspection device and method for powered devices in a Power over Ethernet system
CN113595745B (en) * 2016-10-13 2025-03-25 华为技术有限公司 Power supply equipment, Ethernet power supply method and device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1221783A1 (en) * 2001-01-08 2002-07-10 Alcatel Remote feeding device for a terminal in a telecommunications network , concentrator and repeater with such a device

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07301646A (en) * 1994-05-02 1995-11-14 Matsushita Electric Ind Co Ltd Printed circuit board inspection equipment
JP3383590B2 (en) * 1998-08-19 2003-03-04 沖電気工業株式会社 Power supply system for LAN compatible telephone terminals
US6473608B1 (en) * 1999-01-12 2002-10-29 Powerdsine Ltd. Structure cabling system
US6571181B1 (en) * 1999-08-11 2003-05-27 Broadcom Corporation System and method for detecting a device requiring power
FR2815215B1 (en) * 2000-10-05 2003-01-31 Cit Alcatel TERMINAL SUITABLE FOR LOCAL POWER SUPPLY AND TO BE REMOTE POWERED THROUGH A LINK CONNECTING TO A LOCAL AREA NETWORK
US6459275B1 (en) * 2001-02-28 2002-10-01 Avaya Technology Corp. Detection of devices on a local area network
JP2002290490A (en) * 2001-03-28 2002-10-04 Sony Corp Electronics
TW200501551A (en) * 2003-04-23 2005-01-01 Rohm Co Ltd Audio signal amplifier circuit and electronic apparatus having the same
US7849343B2 (en) * 2003-06-10 2010-12-07 Microsemi Corp. - Analog Mixed Signal Group Ltd. Pre-detection of powered devices
US7356588B2 (en) * 2003-12-16 2008-04-08 Linear Technology Corporation Circuits and methods for detecting the presence of a powered device in a powered network
US8074084B2 (en) * 2004-11-03 2011-12-06 Cisco Technology, Inc. Powered device classification in a wired data telecommunications network
US7248097B2 (en) * 2004-09-02 2007-07-24 Micrel, Inc. Voltage-activated, constant current sink circuit
US7599485B2 (en) * 2005-06-24 2009-10-06 Cisco Technology, Inc. Communications system employing single-pair identity circuit for remotely powered device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1221783A1 (en) * 2001-01-08 2002-07-10 Alcatel Remote feeding device for a terminal in a telecommunications network , concentrator and repeater with such a device

Also Published As

Publication number Publication date
US20060164775A1 (en) 2006-07-27
WO2006081046A2 (en) 2006-08-03
JP4598084B2 (en) 2010-12-15
KR20070101338A (en) 2007-10-16
KR101214773B1 (en) 2012-12-21
US7613936B2 (en) 2009-11-03
JP2008529352A (en) 2008-07-31
EP1842323B1 (en) 2015-03-18
EP1842323A2 (en) 2007-10-10

Similar Documents

Publication Publication Date Title
WO2006081046A3 (en) Dual-mode detection of powered device in power over ethernet system
WO2007089661A3 (en) Power sparing synchronous apparatus
WO2009002076A3 (en) Plug device
WO2007079008A3 (en) Methods and systems for detecting the hydration of sensors
EP2290467A3 (en) Phase detecting device, phase control device including the phase detecting device, and fuser control device including the phase control device
WO2011013906A3 (en) Dimming device for a lighting apparatus
WO2008021198A3 (en) Improved control circuit for multi-phase converter
WO2009135156A3 (en) Protection method, system and apparatus for a power converter
WO2010090870A3 (en) Method and apparatus for characterizing a circuit coupled to an ac line
WO2012086975A3 (en) Direct current/ direct current converter for reducing switching loss, wireless power receiver including direct current/ direct current converter
WO2012164915A3 (en) Detecting device and current sensor
MX2010008681A (en) Arrangement for controlling and testing a notification appliance circuit.
TW200834077A (en) Dual acceleration sensor system
WO2006098157A3 (en) Monitoring device for power supply system
WO2009151743A3 (en) Low loss input channel detection device for a direct current powered lighting system
JP2011023288A5 (en)
WO2006081043A3 (en) Distinguishing network interface card from short circuit condition in power over ethernet system
WO2005076915A3 (en) Methods and apparatuses for selectively disabling functionality of a device
TW200625771A (en) A DC to DC converter having linear mode and switch mode capabilities, a controller and a control method of said converter
EP2378621A3 (en) Apparatus and system for controlling power saving in a bidet
WO2007038556A3 (en) Optical receiver protection circuit
WO2006093733A3 (en) Methods and apparatus for monitoring electrical contacts
WO2009138907A3 (en) Detection of failures within lighting devices
WO2009028195A1 (en) Wireless communication device and wireless communication system
WO2009034831A1 (en) Ultraviolet sensor

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200680005472.X

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 2007552156

Country of ref document: JP

WWE Wipo information: entry into national phase

Ref document number: 2006717528

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 1020077019059

Country of ref document: KR