GB2188518B - Data transmission systems - Google Patents

Data transmission systems

Info

Publication number
GB2188518B
GB2188518B GB8706005A GB8706005A GB2188518B GB 2188518 B GB2188518 B GB 2188518B GB 8706005 A GB8706005 A GB 8706005A GB 8706005 A GB8706005 A GB 8706005A GB 2188518 B GB2188518 B GB 2188518B
Authority
GB
United Kingdom
Prior art keywords
data transmission
transmission systems
systems
data
transmission
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.)
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.)
Filing date
Publication date
Priority claimed from GB868607292A external-priority patent/GB8607292D0/en
Priority claimed from GB868607288A external-priority patent/GB8607288D0/en
Priority claimed from GB878700461A external-priority patent/GB8700461D0/en
Application filed by GEC TELECOMMUNICATIONS Ltd, General Electric Co PLC filed Critical GEC TELECOMMUNICATIONS Ltd
Publication of GB8706005D0 publication Critical patent/GB8706005D0/en
Publication of GB2188518A publication Critical patent/GB2188518A/en
Application granted granted Critical
Publication of GB2188518B publication Critical patent/GB2188518B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
GB868607292A GB8607292D0 (en) 1986-03-24 1986-03-24 Data transmission systems
GB868607288A GB8607288D0 (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

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
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930313