WO2001039515A3 - I2c opto-isolator circuit - Google Patents

I2c opto-isolator circuit Download PDF

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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
Grant status
Application
Patent type
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

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/02Details ; Arrangements for supplying electrical power along data transmission lines
    • H04L25/20Repeater circuits; Relay circuits
    • H04L25/26Circuits with optical sensing means, i.e. using opto-couplers for isolation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/80Optical 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
    • H04B10/801Optical 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
    • H04B10/802Optical 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 WO2001039515A3 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US16231499 true 1999-10-28 1999-10-28
US60/162,314 1999-10-28

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
AU3967901A AU3967901A (en) 1999-10-28 2000-10-27 I2c opto-isolator circuit
KR20027004937A KR20020041463A (en) 1999-10-28 2000-10-27 I2c opto-isolator circuit
EP20000992226 EP1230683A4 (en) 1999-10-28 2000-10-27 I2c opto-isolator circuit
JP2001540535A JP2003530685A (en) 1999-10-28 2000-10-27 I2c optical isolator circuit
MXPA02002773A MXPA02002773A (en) 1999-10-28 2000-10-27 I2C OPTOminus;ISOLATOR CIRCUIT.

Publications (2)

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

Family

ID=22585110

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/041694 WO2001039515A3 (en) 1999-10-28 2000-10-27 I2c opto-isolator circuit

Country Status (4)

Country Link
EP (1) EP1230683A4 (en)
JP (1) JP2003530685A (en)
KR (1) KR20020041463A (en)
WO (1) WO2001039515A3 (en)

Families Citing this family (15)

* 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
CN100567618C (en) * 2004-11-10 2009-12-09 皇家飞利浦电子股份有限公司 Method and 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
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
US9946675B2 (en) 2013-03-13 2018-04-17 Atieva, Inc. Fault-tolerant loop for a communication bus
US10089274B2 (en) 2013-03-13 2018-10-02 Atieva, Inc. Dual voltage communication bus
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
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
US10075246B2 (en) 2013-09-26 2018-09-11 Micro Motion, Inc. Optical isolator mounted in printed circuit board recess
US9228869B2 (en) 2013-09-26 2016-01-05 Rosemount Inc. Industrial process variable transmitter with isolated power scavenging intrinsically safe pulse output circuitry
US10158432B2 (en) 2015-10-22 2018-12-18 Photonic Systems, Inc. RF signal separation and suppression system and method

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 Type
EP1230683A4 (en) 2006-05-17 application
EP1230683A2 (en) 2002-08-14 application
KR20020041463A (en) 2002-06-01 application
JP2003530685A (en) 2003-10-14 application
WO2001039515A2 (en) 2001-05-31 application

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