CA984472A - Equalizers for use in phase-modulation transmission systems - Google Patents

Equalizers for use in phase-modulation transmission systems

Info

Publication number
CA984472A
CA984472A CA167,865A CA167865A CA984472A CA 984472 A CA984472 A CA 984472A CA 167865 A CA167865 A CA 167865A CA 984472 A CA984472 A CA 984472A
Authority
CA
Canada
Prior art keywords
equalizers
phase
transmission systems
modulation transmission
modulation
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
Application number
CA167,865A
Other languages
English (en)
Other versions
CA167865S (en
Inventor
Alex Lautier
Jean M. Pierret
Francis P. Maddens
Henri J. Nussbaumer
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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.)
Filing date
Publication date
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of CA984472A publication Critical patent/CA984472A/en
Expired 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)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Filters That Use Time-Delay Elements (AREA)
CA167,865A 1972-04-26 1973-03-28 Equalizers for use in phase-modulation transmission systems Expired CA984472A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7215578A FR2181593B1 (US06168776-20010102-C00041.png) 1972-04-26 1972-04-26

Publications (1)

Publication Number Publication Date
CA984472A true CA984472A (en) 1976-02-24

Family

ID=9097856

Family Applications (1)

Application Number Title Priority Date Filing Date
CA167,865A Expired CA984472A (en) 1972-04-26 1973-03-28 Equalizers for use in phase-modulation transmission systems

Country Status (7)

Country Link
US (1) US3843942A (US06168776-20010102-C00041.png)
JP (1) JPS5246764B2 (US06168776-20010102-C00041.png)
CA (1) CA984472A (US06168776-20010102-C00041.png)
DE (1) DE2317597C3 (US06168776-20010102-C00041.png)
FR (1) FR2181593B1 (US06168776-20010102-C00041.png)
GB (1) GB1424701A (US06168776-20010102-C00041.png)
IT (1) IT982635B (US06168776-20010102-C00041.png)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5432914A (en) * 1977-08-19 1979-03-10 Nec Corp Pass band-type automatic equalizer
JPS56166620A (en) * 1980-05-28 1981-12-21 Toshiba Corp Automatic equalizer
DE3202727A1 (de) * 1982-01-28 1983-08-04 AEG-Telefunken Nachrichtentechnik GmbH, 7150 Backnang Schaltungsanordnung zur adaptiven entzerrung von troposcatterstrecken im diversitybetrieb
US4635276A (en) * 1985-07-25 1987-01-06 At&T Bell Laboratories Asynchronous and non-data decision directed equalizer adjustment
US7376159B1 (en) 2002-01-03 2008-05-20 The Directv Group, Inc. Exploitation of null packets in packetized digital television systems
AU2003226029A1 (en) * 2002-03-29 2003-10-20 Ecolab, Inc. Method and apparatus for automatic pest trap report generation and for recording additional trap parameter data
US7286473B1 (en) 2002-07-10 2007-10-23 The Directv Group, Inc. Null packet replacement with bi-level scheduling
US7647221B2 (en) * 2003-04-30 2010-01-12 The Directv Group, Inc. Audio level control for compressed audio
US7912226B1 (en) * 2003-09-12 2011-03-22 The Directv Group, Inc. Automatic measurement of audio presence and level by direct processing of an MPEG data stream
US9729120B1 (en) 2011-07-13 2017-08-08 The Directv Group, Inc. System and method to monitor audio loudness and provide audio automatic gain control

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3283063A (en) * 1962-04-11 1966-11-01 Fujitsu Ltd Automatic equalizer system
US3550005A (en) * 1968-03-01 1970-12-22 Milgo Electronic Corp Equalization circuit
US3564457A (en) * 1968-07-18 1971-02-16 Bell Telephone Labor Inc Start up circuit for adaptive equalizer
DE2027544B2 (de) * 1970-06-04 1973-12-13 Siemens Ag, 1000 Berlin U. 8000 Muenchen Automatischer Entzerrer fur phasenmoduliert« Datensignale
US3743975A (en) * 1972-02-22 1973-07-03 Bell Telephone Labor Inc Adjustable equalizer control apparatus

Also Published As

Publication number Publication date
DE2317597B2 (de) 1980-07-03
US3843942A (en) 1974-10-22
DE2317597C3 (de) 1981-03-12
JPS4922804A (US06168776-20010102-C00041.png) 1974-02-28
JPS5246764B2 (US06168776-20010102-C00041.png) 1977-11-28
IT982635B (it) 1974-10-21
DE2317597A1 (de) 1973-11-15
FR2181593B1 (US06168776-20010102-C00041.png) 1974-10-18
GB1424701A (en) 1976-02-11
FR2181593A1 (US06168776-20010102-C00041.png) 1973-12-07

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