WO1995027353A3 - Simultaneous transmission of high and low speed signals - Google Patents

Simultaneous transmission of high and low speed signals Download PDF

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Publication number
WO1995027353A3
WO1995027353A3 PCT/US1995/003529 US9503529W WO9527353A3 WO 1995027353 A3 WO1995027353 A3 WO 1995027353A3 US 9503529 W US9503529 W US 9503529W WO 9527353 A3 WO9527353 A3 WO 9527353A3
Authority
WO
WIPO (PCT)
Prior art keywords
signal
communication
units
differential
twisted pair
Prior art date
Application number
PCT/US1995/003529
Other languages
French (fr)
Other versions
WO1995027353A2 (en
Inventor
Roger W. Van Brunt
Florin A. Oprescu
Original Assignee
Apple Computer, 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 Apple Computer, Inc. filed Critical Apple Computer, Inc.
Priority to AU21044/95A priority Critical patent/AU2104495A/en
Publication of WO1995027353A2 publication Critical patent/WO1995027353A2/en
Publication of WO1995027353A3 publication Critical patent/WO1995027353A3/en

Links

Classifications

    • 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
    • H04L25/0264—Arrangements for coupling to transmission lines
    • H04L25/028—Arrangements specific to the transmitter end
    • 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
    • H04L25/0264—Arrangements for coupling to transmission lines
    • H04L25/0272—Arrangements for coupling to multiple lines, e.g. for differential transmission
    • H04L25/0276—Arrangements for coupling common mode signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/20—Arrangements affording multiple use of the transmission path using different combinations of lines, e.g. phantom working

Abstract

A mechanism and method for efficiently communicating information regarding particular communication rate ('speed signal') between two or more communication stations (of a communication network). The transmitter operates on the IEEE P 1394 High Performance Serial Bus to supply both differential and common mode signaling required by the IEEE standard for exemplary data transfer rates of 100 and 200 Mbit transmission. The present invention includes a transmission circuit that may operate in a differential signal mode and simultaneously in a common signal mode both utilizing a twisted pair cable. Data may be transmitted on the twisted pair at small differential signals. Information regarding the signal speed between two coupled units may be simultaneously transmitted using variations in the common mode voltage over the twisted pair. Communication may be initiated at a slower communication rate and then upgraded as appropriate for the two units. The present invention allows an efficient single circuit mechanism for communication units to transmit differential data and also to signal the use of a high speed communication rate with a common mode voltage. The present invention is especially useful within networks having units of varying versions and signal transfer rates.
PCT/US1995/003529 1994-03-29 1995-03-21 Simultaneous transmission of high and low speed signals WO1995027353A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU21044/95A AU2104495A (en) 1994-03-29 1995-03-21 Circuit and method for twisted pair current source driver

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/219,728 US5485488A (en) 1994-03-29 1994-03-29 Circuit and method for twisted pair current source driver
US08/219,728 1994-03-29

Publications (2)

Publication Number Publication Date
WO1995027353A2 WO1995027353A2 (en) 1995-10-12
WO1995027353A3 true WO1995027353A3 (en) 1995-10-26

Family

ID=22820536

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1995/003529 WO1995027353A2 (en) 1994-03-29 1995-03-21 Simultaneous transmission of high and low speed signals

Country Status (3)

Country Link
US (1) US5485488A (en)
AU (1) AU2104495A (en)
WO (1) WO1995027353A2 (en)

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US8565418B2 (en) 2010-05-13 2013-10-22 Huawei Technologies Co., Ltd. Method, device and system for extending channels

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US6188271B1 (en) * 1998-07-13 2001-02-13 Minhui Wang Fail safe bias system for a tri-state bus
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US6718415B1 (en) 1999-05-14 2004-04-06 Acqis Technology, Inc. Computer system and method including console housing multiple computer modules having independent processing units, mass storage devices, and graphics controllers
US6388591B1 (en) 1999-09-24 2002-05-14 Oak Technology, Inc. Apparatus and method for receiving data serially for use with an advanced technology attachment packet interface (atapi)
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US7542474B2 (en) * 2001-02-26 2009-06-02 Sony Corporation Method of and apparatus for providing isochronous services over switched ethernet including a home network wall plate having a combined IEEE 1394 and ethernet modified hub
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US20020172290A1 (en) * 2001-05-18 2002-11-21 Chorpenning Jack S. Method and system for transmitting signals between a high speed serial bus and a coaxial cable
US7702293B2 (en) * 2001-11-02 2010-04-20 Nokia Corporation Multi-mode I/O circuitry supporting low interference signaling schemes for high speed digital interfaces
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8565418B2 (en) 2010-05-13 2013-10-22 Huawei Technologies Co., Ltd. Method, device and system for extending channels

Also Published As

Publication number Publication date
AU2104495A (en) 1995-10-23
WO1995027353A2 (en) 1995-10-12
US5485488A (en) 1996-01-16

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