GB2188518B - Data transmission systems - Google Patents

Data transmission systems

Info

Publication number: GB2188518B
Authority: GB; United Kingdom
Prior art keywords: data transmission; transmission systems; systems; data; transmission
Prior art date: 1986-03-24
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.): Expired - Fee Related

Application number

GB8706005A

Other versions

GB2188518A (en

GB8706005D0 (en

Inventor

William Hodgkiss

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.)

GEC TELECOMMUNICATIONS Ltd

General Electric Co PLC

Original Assignee

GEC TELECOMMUNICATIONS Ltd

General Electric Co 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.)

1986-03-24

Filing date

1987-03-13

Publication date

1990-01-04

1986-03-24 Priority claimed from GB868607288A external-priority patent/GB8607288D0/en

1986-03-24 Priority claimed from GB868607292A external-priority patent/GB8607292D0/en

1987-01-09 Priority claimed from GB878700461A external-priority patent/GB8700461D0/en

1987-03-13 Application filed by GEC TELECOMMUNICATIONS Ltd, General Electric Co PLC filed Critical GEC TELECOMMUNICATIONS Ltd

1987-04-15 Publication of GB8706005D0 publication Critical patent/GB8706005D0/en

1987-09-30 Publication of GB2188518A publication Critical patent/GB2188518A/en

1990-01-04 Application granted granted Critical

1990-01-04 Publication of GB2188518B publication Critical patent/GB2188518B/en

2007-03-13 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/01—Equalisers

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

GB8706005A 1986-03-24 1987-03-13 Data transmission systems Expired - Fee Related GB2188518B (en)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
GB868607288A GB8607288D0 (en)	1986-03-24	1986-03-24	Data transmission systems
GB868607292A GB8607292D0 (en)	1986-03-24	1986-03-24	Data transmission systems
GB878700461A GB8700461D0 (en)	1987-01-09	1987-01-09	Data transmission systems

Publications (3)

Publication Number	Publication Date
GB8706005D0 GB8706005D0 (en)	1987-04-15
GB2188518A GB2188518A (en)	1987-09-30
GB2188518B true GB2188518B (en)	1990-01-04

Family

ID=27262969

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB8706005A Expired - Fee Related GB2188518B (en)	1986-03-24	1987-03-13	Data transmission systems

Country Status (1)

Country	Link
GB (1)	GB2188518B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4800576A (en) *	1987-03-04	1989-01-24	National Semiconductor Corporation	Convolution data recovery circuit
US4924492A (en) *	1988-03-22	1990-05-08	American Telephone And Telegraph Company	Method and apparatus for wideband transmission of digital signals between, for example, a telephone central office and customer premises
US5007047A (en) *	1988-12-02	1991-04-09	Codex Corporation	Adaptive rate control for echo cancelling modem

Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4525847A (en) *	1982-11-10	1985-06-25	Paradyne Corporation	QAM encoder
EP0169612A1 (en) *	1984-07-23	1986-01-29	Koninklijke Philips Electronics N.V.	Arrangement for generating an angle-modulated carrier signal of a constant amplitude in response to data signals
EP0194791A2 (en) *	1985-03-04	1986-09-17	Digital Equipment Corporation	Digitally implemented modulators
US4646326A (en) *	1983-10-20	1987-02-24	Motorola Inc.	QAM modulator circuit

1987
- 1987-03-13 GB GB8706005A patent/GB2188518B/en not_active Expired - Fee Related

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4525847A (en) *	1982-11-10	1985-06-25	Paradyne Corporation	QAM encoder
US4646326A (en) *	1983-10-20	1987-02-24	Motorola Inc.	QAM modulator circuit
EP0169612A1 (en) *	1984-07-23	1986-01-29	Koninklijke Philips Electronics N.V.	Arrangement for generating an angle-modulated carrier signal of a constant amplitude in response to data signals
EP0194791A2 (en) *	1985-03-04	1986-09-17	Digital Equipment Corporation	Digitally implemented modulators

Also Published As

Publication number	Publication date
GB2188518A (en)	1987-09-30
GB8706005D0 (en)	1987-04-15

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Legal Events

Date	Code	Title	Description
1990-02-07	732	Registration of transactions, instruments or events in the register (sect. 32/1977)
1993-11-10	PCNP	Patent ceased through non-payment of renewal fee	Effective date: 19930313