AU1153188A - Transmission system - Google Patents

Transmission system

Info

Publication number: AU1153188A
Authority: AU; Australia
Prior art keywords: transmission system; transmission
Prior art date: 1987-01-13
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

AU11531/88A

Other versions

AU618522B2 (en

Inventor

John David Brownlie

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.)

British Telecommunications PLC

Original Assignee

British Telecommunications PLC

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.)

1987-01-13

Filing date

1988-01-13

Publication date

1988-08-10

1987-01-13 Priority claimed from GB878700669A external-priority patent/GB8700669D0/en

1988-01-13 Application filed by British Telecommunications PLC filed Critical British Telecommunications PLC

1988-08-10 Publication of AU1153188A publication Critical patent/AU1153188A/en

1992-01-02 Application granted granted Critical

1992-01-02 Publication of AU618522B2 publication Critical patent/AU618522B2/en

2008-01-13 Anticipated expiration legal-status Critical

Status Ceased legal-status Critical Current

Links

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
- H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers
- H04B3/235—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers combined with adaptive equaliser
- 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
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Computer Networks & Wireless Communication (AREA)
Bidirectional Digital Transmission (AREA)

AU11531/88A 1987-01-13 1988-01-13 Transmission system Ceased AU618522B2 (en)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
GB8700669		1987-01-13
GB878700669A GB8700669D0 (en)	1987-01-13	1987-01-13	Transmission system
CA000557809A CA1321414C (en)	1987-01-13	1988-02-01	Transmission system

Publications (2)

Publication Number	Publication Date
AU1153188A true AU1153188A (en)	1988-08-10
AU618522B2 AU618522B2 (en)	1992-01-02

Family

ID=25671687

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
AU11531/88A Ceased AU618522B2 (en)	1987-01-13	1988-01-13	Transmission system

Country Status (3)

Country	Link
AU (1)	AU618522B2 (en)
CA (1)	CA1321414C (en)
DE (1)	DE3885888T2 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3404219A (en) *	1964-05-20	1968-10-01	Army Usa	In-band break-in system
US4481622A (en) *	1982-04-01	1984-11-06	Anderson Jacobson, Inc.	High speed dial-up telephone circuit full duplex data transmission techniques
US4712235A (en) *	1984-11-19	1987-12-08	International Business Machines Corporation	Method and apparatus for improved control and time sharing of an echo canceller

1988
- 1988-01-13 AU AU11531/88A patent/AU618522B2/en not_active Ceased
- 1988-01-13 DE DE3885888T patent/DE3885888T2/en not_active Expired - Fee Related
- 1988-02-01 CA CA000557809A patent/CA1321414C/en not_active Expired - Fee Related

Also Published As

Publication number	Publication date
DE3885888D1 (en)	1994-01-05
CA1321414C (en)	1993-08-17
AU618522B2 (en)	1992-01-02
DE3885888T2 (en)	1994-07-07

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Legal Events

Date	Code	Title	Description
2000-08-17	MK14	Patent ceased section 143(a) (annual fees not paid) or expired