FR2234717A1 - Group propagation-time corrector - is used in data transmission lines and adjusts whilst data is present - Google Patents

Group propagation-time corrector - is used in data transmission lines and adjusts whilst data is present

Info

Publication number
FR2234717A1
FR2234717A1 FR7322712A FR7322712A FR2234717A1 FR 2234717 A1 FR2234717 A1 FR 2234717A1 FR 7322712 A FR7322712 A FR 7322712A FR 7322712 A FR7322712 A FR 7322712A FR 2234717 A1 FR2234717 A1 FR 2234717A1
Authority
FR
France
Prior art keywords
data
adjusts
group propagation
transmission lines
present
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.)
Withdrawn
Application number
FR7322712A
Other languages
French (fr)
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.)
Telecommunications Radioelectriques et Telephoniques SA TRT
Original Assignee
Telecommunications Radioelectriques et Telephoniques SA TRT
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 Telecommunications Radioelectriques et Telephoniques SA TRT filed Critical Telecommunications Radioelectriques et Telephoniques SA TRT
Priority to FR7322712A priority Critical patent/FR2234717A1/en
Publication of FR2234717A1 publication Critical patent/FR2234717A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/04—Control of transmission; Equalising
    • H04B3/14—Control of transmission; Equalising characterised by the equalising network used
    • H04B3/141—Control of transmission; Equalising characterised by the equalising network used using multiequalisers, e.g. bump, cosine, Bode

Abstract

Transmission line equalisers can have the disadvantage that they have frequency dependant elements or are insufficiently accurate. Also, these methods involve test signals that are incompatible with the presence of data signals. This equaliser for group propagation-time can be permanently adjusted in the presence of data. It has two equaliser networks whose outputs are the inverse of the extreme limits of the required equalisation. A quantitive sampling circuit at the output, varies the required characteristics by appropriate combination of the two networks. The combining amplifiers use Field Effect Transistors and the quantitive analysis signal is in the form of pulses originating from a slaved clock generator.
FR7322712A 1973-06-21 1973-06-21 Group propagation-time corrector - is used in data transmission lines and adjusts whilst data is present Withdrawn FR2234717A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7322712A FR2234717A1 (en) 1973-06-21 1973-06-21 Group propagation-time corrector - is used in data transmission lines and adjusts whilst data is present

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7322712A FR2234717A1 (en) 1973-06-21 1973-06-21 Group propagation-time corrector - is used in data transmission lines and adjusts whilst data is present

Publications (1)

Publication Number Publication Date
FR2234717A1 true FR2234717A1 (en) 1975-01-17

Family

ID=9121353

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7322712A Withdrawn FR2234717A1 (en) 1973-06-21 1973-06-21 Group propagation-time corrector - is used in data transmission lines and adjusts whilst data is present

Country Status (1)

Country Link
FR (1) FR2234717A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4506237A (en) * 1982-11-30 1985-03-19 Rockwell International Corporation Adjustable slope equalizer
EP0149794A1 (en) * 1984-01-20 1985-07-31 Siemens Aktiengesellschaft Adjustable delay equalizer
EP0149793A1 (en) * 1984-01-20 1985-07-31 Siemens Aktiengesellschaft Delay equalizer with continuously or stepwise adjustable delay characteristics
EP0257526A2 (en) * 1986-08-18 1988-03-02 Fujitsu Limited Amplitude equalizer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4506237A (en) * 1982-11-30 1985-03-19 Rockwell International Corporation Adjustable slope equalizer
EP0149794A1 (en) * 1984-01-20 1985-07-31 Siemens Aktiengesellschaft Adjustable delay equalizer
EP0149793A1 (en) * 1984-01-20 1985-07-31 Siemens Aktiengesellschaft Delay equalizer with continuously or stepwise adjustable delay characteristics
EP0257526A2 (en) * 1986-08-18 1988-03-02 Fujitsu Limited Amplitude equalizer
EP0257526A3 (en) * 1986-08-18 1989-11-15 Fujitsu Limited Amplitude equalizer

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Legal Events

Date Code Title Description
ST Notification of lapse