NL7704518A - AUTOMATIC EQUALIZATION DEVICE, OPERATING IN THE FREQUENCY DOMAIN USING THE DISCRETE FOURIER TRANSFORMATION. - Google Patents

AUTOMATIC EQUALIZATION DEVICE, OPERATING IN THE FREQUENCY DOMAIN USING THE DISCRETE FOURIER TRANSFORMATION.

Info

Publication number: NL7704518A
Authority: NL; Netherlands
Prior art keywords: operating; frequency domain; discrete fourier; fourier transformation; equalization device
Prior art date: 1976-07-19

Application number

NL7704518A

Other languages

Dutch (nl)

Original Assignee

Xerox Corp

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.)

1976-07-19

Filing date

1977-04-25

Publication date

1978-01-23

1976-07-19 Priority claimed from US05/706,702 external-priority patent/US4106103A/en

1976-07-19 Priority claimed from US05/706,703 external-priority patent/US4100604A/en

1977-04-25 Application filed by Xerox Corp filed Critical Xerox Corp

1978-01-23 Publication of NL7704518A publication Critical patent/NL7704518A/en

Links

230000009466 transformation Effects 0.000 title 1

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

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Filters That Use Time-Delay Elements (AREA)

NL7704518A 1976-07-19 1977-04-25 AUTOMATIC EQUALIZATION DEVICE, OPERATING IN THE FREQUENCY DOMAIN USING THE DISCRETE FOURIER TRANSFORMATION. NL7704518A (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
US05/706,702 US4106103A (en)	1976-07-19	1976-07-19	Derivation of discrete Fourier transform components of a time dependent signal
US05/706,703 US4100604A (en)	1976-07-19	1976-07-19	Frequency domain automatic equalizer utilizing the discrete Fourier transform

Publications (1)

Publication Number	Publication Date
NL7704518A true NL7704518A (en)	1978-01-23

Family

ID=27107739

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL7704518A NL7704518A (en)	1976-07-19	1977-04-25	AUTOMATIC EQUALIZATION DEVICE, OPERATING IN THE FREQUENCY DOMAIN USING THE DISCRETE FOURIER TRANSFORMATION.

Country Status (7)

Country	Link
JP (1)	JPS5325335A (en)
CA (1)	CA1087693A (en)
DE (1)	DE2729336A1 (en)
FR (1)	FR2359546A1 (en)
GB (1)	GB1585836A (en)
IT (1)	IT1086161B (en)
NL (1)	NL7704518A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5888915A (en) *	1981-11-20	1983-05-27	Hiroshi Miyagawa	Frequency sampling type automatic equalizer
JPS5888914A (en) *	1981-11-20	1983-05-27	Hiroshi Miyagawa	Automatic equalizer
US4813001A (en) *	1987-05-29	1989-03-14	Schlumberger Systems, Inc.	AC calibration method and device by determining transfer characteristics
CN114372491A (en) *	2021-12-31	2022-04-19	山东科讯信息科技有限公司	Fault identification method of rotating equipment and related equipment

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3292110A (en) *	1964-09-16	1966-12-13	Bell Telephone Labor Inc	Transversal equalizer for digital transmission systems wherein polarity of time-spaced portions of output signal controls corresponding multiplier setting
US3375473A (en) *	1965-07-15	1968-03-26	Bell Telephone Labor Inc	Automatic equalizer for analog channels having means for comparing two test pulses, one pulse traversing the transmission channel and equalizer
US3582879A (en) *	1969-04-25	1971-06-01	Computer Mode Corp	Communication channel equalization system and equalizer
US3614673A (en) *	1970-05-28	1971-10-19	Bunker Ramo	Technique for utilizing a single pulse to set the gains of a transversal filter
US3851162A (en) *	1973-04-18	1974-11-26	Nasa	Continuous fourier transform method and apparatus
US4027257A (en) *	1976-06-01	1977-05-31	Xerox Corporation	Frequency domain automatic equalizer having logic circuitry

1977
- 1977-03-31 CA CA275,215A patent/CA1087693A/en not_active Expired
- 1977-04-25 NL NL7704518A patent/NL7704518A/en not_active Application Discontinuation
- 1977-06-29 DE DE19772729336 patent/DE2729336A1/en active Granted
- 1977-07-12 JP JP8349677A patent/JPS5325335A/en active Pending
- 1977-07-18 IT IT2584477A patent/IT1086161B/en active
- 1977-07-18 GB GB3004777A patent/GB1585836A/en not_active Expired
- 1977-07-19 FR FR7722030A patent/FR2359546A1/en active Granted

Also Published As

Publication number	Publication date
DE2729336A1 (en)	1978-01-26
IT1086161B (en)	1985-05-28
GB1585836A (en)	1981-03-11
DE2729336C2 (en)	1988-08-11
JPS5325335A (en)	1978-03-09
FR2359546B1 (en)	1984-04-27
CA1087693A (en)	1980-10-14
FR2359546A1 (en)	1978-02-17

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Legal Events

Date	Code	Title
1984-06-01	BA	A request for search or an international-type search has been filed
1984-07-02	BB	A search report has been drawn up
1985-01-02	BV	The patent application has lapsed