CA2010478A1 - Spread-spectrum identification signal for communications systems - Google Patents

Spread-spectrum identification signal for communications systems

Info

Publication number
CA2010478A1
CA2010478A1 CA2010478A CA2010478A CA2010478A1 CA 2010478 A1 CA2010478 A1 CA 2010478A1 CA 2010478 A CA2010478 A CA 2010478A CA 2010478 A CA2010478 A CA 2010478A CA 2010478 A1 CA2010478 A1 CA 2010478A1
Authority
CA
Canada
Prior art keywords
spread
identification signal
communications systems
signal
communications
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.)
Granted
Application number
CA2010478A
Other languages
French (fr)
Other versions
CA2010478C (en
Inventor
Jean-Jacques Werner
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.)
AT&T Corp
Original Assignee
American Telephone and Telegraph Co 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 American Telephone and Telegraph Co Inc filed Critical American Telephone and Telegraph Co Inc
Publication of CA2010478A1 publication Critical patent/CA2010478A1/en
Application granted granted Critical
Publication of CA2010478C publication Critical patent/CA2010478C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69Spread spectrum techniques
    • H04B1/707Spread spectrum techniques using direct sequence modulation

Abstract

Abstract of the Disclosure A spread-spectrum signal which conveys identifying information for an associated information signal is superimposed on the associated signal and transmitted therewith. Such identifying information distinguishes between voice and data information signals and between different types of data information signals.
Such identification can be used for a variety of purposes within a communications network, such as facility and equipment selection, equipment disablement and bypass, setting communications parameters, e.g.. speed, and inhibiting communications upon fault detection.
CA002010478A 1989-03-31 1990-02-20 Spread-spectrum identification signal for communications systems Expired - Fee Related CA2010478C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US331,933 1981-12-17
US07/331,933 US4943973A (en) 1989-03-31 1989-03-31 Spread-spectrum identification signal for communications system

Publications (2)

Publication Number Publication Date
CA2010478A1 true CA2010478A1 (en) 1990-09-30
CA2010478C CA2010478C (en) 1994-08-02

Family

ID=23295977

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002010478A Expired - Fee Related CA2010478C (en) 1989-03-31 1990-02-20 Spread-spectrum identification signal for communications systems

Country Status (5)

Country Link
US (1) US4943973A (en)
EP (1) EP0390417B1 (en)
JP (1) JPH02288522A (en)
CA (1) CA2010478C (en)
DE (1) DE69020606T2 (en)

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Also Published As

Publication number Publication date
JPH02288522A (en) 1990-11-28
EP0390417B1 (en) 1995-07-05
US4943973A (en) 1990-07-24
CA2010478C (en) 1994-08-02
DE69020606D1 (en) 1995-08-10
EP0390417A3 (en) 1992-10-14
DE69020606T2 (en) 1996-03-21
EP0390417A2 (en) 1990-10-03

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