FR2207390B1 - - Google Patents

Info

Publication number
FR2207390B1
FR2207390B1 FR7335258A FR7335258A FR2207390B1 FR 2207390 B1 FR2207390 B1 FR 2207390B1 FR 7335258 A FR7335258 A FR 7335258A FR 7335258 A FR7335258 A FR 7335258A FR 2207390 B1 FR2207390 B1 FR 2207390B1
Authority
FR
France
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
FR7335258A
Other versions
FR2207390A1 (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.)
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
Publication of FR2207390A1 publication Critical patent/FR2207390A1/fr
Application granted granted Critical
Publication of FR2207390B1 publication Critical patent/FR2207390B1/fr
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
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/14—Demodulator circuits; Receiver circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/14—Demodulator circuits; Receiver circuits
    • H04L27/144—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements
    • H04L27/148—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using filters, including PLL-type filters

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Complex Calculations (AREA)
  • Filters That Use Time-Delay Elements (AREA)
FR7335258A 1972-11-17 1973-09-27 Expired FR2207390B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00307716A US3803501A (en) 1972-11-17 1972-11-17 Frequency discriminator using digital non-recursive filters

Publications (2)

Publication Number Publication Date
FR2207390A1 FR2207390A1 (fr) 1974-06-14
FR2207390B1 true FR2207390B1 (fr) 1976-04-30

Family

ID=23190909

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7335258A Expired FR2207390B1 (fr) 1972-11-17 1973-09-27

Country Status (7)

Country Link
US (1) US3803501A (fr)
JP (1) JPS558859B2 (fr)
CA (1) CA992161A (fr)
DE (1) DE2356955C3 (fr)
FR (1) FR2207390B1 (fr)
GB (1) GB1409681A (fr)
IT (1) IT998646B (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4215425A (en) * 1978-02-27 1980-07-29 Sangamo Weston, Inc. Apparatus and method for filtering signals in a logging-while-drilling system
DE3121444A1 (de) * 1981-05-29 1982-12-16 Siemens AG, 1000 Berlin und 8000 München Verfahren und anordnung zum demodulieren von fsk-signalen
DE3212054A1 (de) * 1982-04-01 1983-10-06 Blaupunkt Werke Gmbh Digitaler demodulator
DE3438370C1 (de) * 1984-10-19 1986-04-03 ANT Nachrichtentechnik GmbH, 7150 Backnang Verfahren zur Demodulation eines frequenzmodulierten Datensignals
DE3517485A1 (de) * 1985-05-15 1986-11-20 Blaupunkt-Werke Gmbh, 3200 Hildesheim Demodulator fuer frequenzmodulierte signale in digitaler form
DE3674096D1 (de) * 1985-07-03 1990-10-18 Siemens Ag Digitale filterweiche, insbesondere fuer einen datenempfaenger.
JP2558655B2 (ja) * 1986-10-20 1996-11-27 松下電器産業株式会社 ディジタルｆｍ復調器
GB8703136D0 (en) * 1987-02-11 1987-03-18 Univ Cardiff Filtering electrical signals
GB8719849D0 (en) * 1987-08-21 1987-09-30 British Telecomm Fsk discriminator
US5119326A (en) * 1989-12-06 1992-06-02 Transwitch Corporation Waveshaping transversal filter and method utilizing the same for data transmission over coaxial cable
JP2581306B2 (ja) * 1990-11-24 1997-02-12 日本電気株式会社 ディジタル方式直交位相検波回路
FR2681197B1 (fr) * 1991-09-09 1993-10-29 France Telecom Discriminateur de frequence tronique.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3521042A (en) * 1967-07-19 1970-07-21 Ibm Simplified digital filter
US3689844A (en) * 1969-12-11 1972-09-05 Bell Telephone Labor Inc Digital filter receiver for frequency-shift data signals

Also Published As

Publication number Publication date
DE2356955B2 (de) 1981-03-26
US3803501A (en) 1974-04-09
JPS4983360A (fr) 1974-08-10
GB1409681A (en) 1975-10-15
CA992161A (en) 1976-06-29
JPS558859B2 (fr) 1980-03-06
DE2356955C3 (de) 1981-11-26
IT998646B (it) 1976-02-20
DE2356955A1 (de) 1974-05-22
FR2207390A1 (fr) 1974-06-14

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Legal Events

Date Code Title Description
ST Notification of lapse