WO2001039515A3 - I2c opto-isolator circuit - Google Patents

I2c opto-isolator circuit Download PDF

Info

Publication number
WO2001039515A3
WO2001039515A3 PCT/US2000/041694 US0041694W WO0139515A3 WO 2001039515 A3 WO2001039515 A3 WO 2001039515A3 US 0041694 W US0041694 W US 0041694W WO 0139515 A3 WO0139515 A3 WO 0139515A3
Authority
WO
WIPO (PCT)
Prior art keywords
opto
buffer
receiving
isolator
data
Prior art date
Application number
PCT/US2000/041694
Other languages
French (fr)
Other versions
WO2001039515A2 (en
Inventor
Parviz Ghaseminejad
Original Assignee
Powersmart Inc
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 Powersmart Inc filed Critical Powersmart Inc
Priority to EP00992226A priority Critical patent/EP1230683A4/en
Priority to AU39679/01A priority patent/AU3967901A/en
Priority to KR1020027004937A priority patent/KR20020041463A/en
Priority to MXPA02002773A priority patent/MXPA02002773A/en
Priority to JP2001540535A priority patent/JP2003530685A/en
Publication of WO2001039515A2 publication Critical patent/WO2001039515A2/en
Publication of WO2001039515A3 publication Critical patent/WO2001039515A3/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/32—Non-reciprocal transmission devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/20—Repeater circuits; Relay circuits
    • H04L25/26—Circuits with optical sensing means, i.e. using opto-couplers for isolation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/80—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water
    • H04B10/801—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water using optical interconnects, e.g. light coupled isolators, circuit board interconnections
    • H04B10/802—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water using optical interconnects, e.g. light coupled isolators, circuit board interconnections for isolation, e.g. using optocouplers

Abstract

An opto-isolator circuit (100) for providing isolation between a bi-directional, I2C transmission line and a pair of single-direction transmission lines (32, 34). The opto-isolator circuit (100) includes a bi-directional port (102) for receiving data from, and providing data to, the bi-directional transmission line. The circuit further includes an output path that has (i) a first buffer (108) for receiving outgoing data from the bi-directional port (102), (ii) a first opto-isolator (110) for receiving the outgoing data from an output of the first buffer (108), and (iii) a second buffer (112) for receiving the outgoing data from an output of the first opto-isolator (110) and providing the outgoing data to an output port (104). The circuit also includes an input path, that has (i) a third buffer (114) for receiving incoming data from an input port (106), (ii) a second opto-isolator (116) for receiving the incoming data from an output of the third buffer (114), and (iii) a fourth buffer (118) for receiving the incoming data from an output of the second opto-isolator (116). The fourth buffer (118) provides the incoming data to the bi-directional port (102) such that characteristics of the incoming data are compatible with I2C characteristics.
PCT/US2000/041694 1999-10-28 2000-10-27 I2c opto-isolator circuit WO2001039515A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP00992226A EP1230683A4 (en) 1999-10-28 2000-10-27 I2c opto-isolator circuit
AU39679/01A AU3967901A (en) 1999-10-28 2000-10-27 I2c opto-isolator circuit
KR1020027004937A KR20020041463A (en) 1999-10-28 2000-10-27 I2c opto-isolator circuit
MXPA02002773A MXPA02002773A (en) 1999-10-28 2000-10-27 I2C OPTOminus;ISOLATOR CIRCUIT.
JP2001540535A JP2003530685A (en) 1999-10-28 2000-10-27 I2C optical isolator circuit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US16231499P 1999-10-28 1999-10-28
US60/162,314 1999-10-28

Publications (2)

Publication Number Publication Date
WO2001039515A2 WO2001039515A2 (en) 2001-05-31
WO2001039515A3 true WO2001039515A3 (en) 2001-10-25

Family

ID=22585110

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/041694 WO2001039515A2 (en) 1999-10-28 2000-10-27 I2c opto-isolator circuit

Country Status (7)

Country Link
EP (1) EP1230683A4 (en)
JP (1) JP2003530685A (en)
KR (1) KR20020041463A (en)
AU (1) AU3967901A (en)
MX (1) MXPA02002773A (en)
TW (1) TW548998B (en)
WO (1) WO2001039515A2 (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100654763B1 (en) * 2004-06-24 2006-12-08 공상혁 Mouse pad for computer
WO2006051458A1 (en) * 2004-11-10 2006-05-18 Koninklijke Philips Electronics N.V. Method of an device for performing bi-directional transmission using a single-wire
CN101820314B (en) * 2009-02-27 2013-07-10 深圳拓邦股份有限公司 Single-line bidirectional communication optical coupling isolation circuit
JP2011108036A (en) * 2009-11-18 2011-06-02 Panasonic Electric Works Co Ltd Digital input circuit
TWI419607B (en) * 2010-06-14 2013-12-11 E Sun Prec Ind Co Ltd Signal transmission circuit
US11539392B2 (en) 2012-07-30 2022-12-27 Photonic Systems, Inc. Same-aperture any-frequency simultaneous transmit and receive communication system
US10374656B2 (en) 2012-07-30 2019-08-06 Photonic Systems, Inc. Same-aperture any-frequency simultaneous transmit and receive communication system
US9935680B2 (en) 2012-07-30 2018-04-03 Photonic Systems, Inc. Same-aperture any-frequency simultaneous transmit and receive communication system
US9966584B2 (en) 2013-03-11 2018-05-08 Atieva, Inc. Bus bar for battery packs
US9514086B2 (en) 2013-03-13 2016-12-06 Atieva, Inc. Configuration switch for a broadcast bus
US9229889B2 (en) * 2013-03-13 2016-01-05 Atieva, Inc. Dual voltage communication bus
US10089274B2 (en) 2013-03-13 2018-10-02 Atieva, Inc. Dual voltage communication bus
US9946675B2 (en) 2013-03-13 2018-04-17 Atieva, Inc. Fault-tolerant loop for a communication bus
US9041454B2 (en) 2013-03-15 2015-05-26 Atieva, Inc. Bias circuit for a switched capacitor level shifter
US9175993B2 (en) 2013-09-26 2015-11-03 Rosemount Inc. Industrial process field device with low power optical isolator
US9228869B2 (en) 2013-09-26 2016-01-05 Rosemount Inc. Industrial process variable transmitter with isolated power scavenging intrinsically safe pulse output circuitry
US10075246B2 (en) 2013-09-26 2018-09-11 Micro Motion, Inc. Optical isolator mounted in printed circuit board recess
US10158432B2 (en) 2015-10-22 2018-12-18 Photonic Systems, Inc. RF signal separation and suppression system and method
US10623986B2 (en) 2015-10-22 2020-04-14 Photonic Systems, Inc. RF signal separation and suppression system and method
KR101945425B1 (en) * 2015-11-27 2019-02-07 주식회사 엘지화학 Apparatus for monitoring the status of battery pack in parallel

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4282604A (en) * 1979-04-04 1981-08-04 Jefferson William T Optical isolation circuit for bidirectional communication lines
US5323014A (en) * 1993-03-01 1994-06-21 Aeg Transportation Systems, Inc. Optocoupler built-in self test for applications requiring isolation
US5406091A (en) * 1993-05-27 1995-04-11 Ford Motor Company Communication network optical isolation circuit
US5438210A (en) * 1993-10-22 1995-08-01 Worley; Eugene R. Optical isolation connections using integrated circuit techniques

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2600476A1 (en) * 1986-06-19 1987-12-24 Hewlett Packard France Sa Device for connection between a data network and a plurality of terminal clusters

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4282604A (en) * 1979-04-04 1981-08-04 Jefferson William T Optical isolation circuit for bidirectional communication lines
US5323014A (en) * 1993-03-01 1994-06-21 Aeg Transportation Systems, Inc. Optocoupler built-in self test for applications requiring isolation
US5406091A (en) * 1993-05-27 1995-04-11 Ford Motor Company Communication network optical isolation circuit
US5438210A (en) * 1993-10-22 1995-08-01 Worley; Eugene R. Optical isolation connections using integrated circuit techniques

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1230683A4 *

Also Published As

Publication number Publication date
WO2001039515A2 (en) 2001-05-31
EP1230683A4 (en) 2006-05-17
KR20020041463A (en) 2002-06-01
EP1230683A2 (en) 2002-08-14
MXPA02002773A (en) 2003-01-28
TW548998B (en) 2003-08-21
AU3967901A (en) 2001-06-04
JP2003530685A (en) 2003-10-14

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