DE2356955C3 - Frequenzdiskriminator mit digitalen, nicht rekursiven Filtern - Google Patents

Frequenzdiskriminator mit digitalen, nicht rekursiven Filtern

Info

Publication number
DE2356955C3
DE2356955C3 DE2356955A DE2356955A DE2356955C3 DE 2356955 C3 DE2356955 C3 DE 2356955C3 DE 2356955 A DE2356955 A DE 2356955A DE 2356955 A DE2356955 A DE 2356955A DE 2356955 C3 DE2356955 C3 DE 2356955C3
Authority
DE
Germany
Prior art keywords
frequency
filter
digital
adder
discriminator
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
DE2356955A
Other languages
German (de)
English (en)
Other versions
DE2356955B2 (de
DE2356955A1 (de
Inventor
Gardner Dulany Raleigh N.C. Jones jun.
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 DE2356955A1 publication Critical patent/DE2356955A1/de
Publication of DE2356955B2 publication Critical patent/DE2356955B2/de
Application granted granted Critical
Publication of DE2356955C3 publication Critical patent/DE2356955C3/de
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)
DE2356955A 1972-11-17 1973-11-15 Frequenzdiskriminator mit digitalen, nicht rekursiven Filtern Expired DE2356955C3 (de)

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 (3)

Publication Number Publication Date
DE2356955A1 DE2356955A1 (de) 1974-05-22
DE2356955B2 DE2356955B2 (de) 1981-03-26
DE2356955C3 true DE2356955C3 (de) 1981-11-26

Family

ID=23190909

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2356955A Expired DE2356955C3 (de) 1972-11-17 1973-11-15 Frequenzdiskriminator mit digitalen, nicht rekursiven Filtern

Country Status (7)

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

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
ATE56573T1 (de) * 1985-07-03 1990-09-15 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
JPS4983360A (enExample) 1974-08-10
GB1409681A (en) 1975-10-15
JPS558859B2 (enExample) 1980-03-06
CA992161A (en) 1976-06-29
DE2356955B2 (de) 1981-03-26
FR2207390A1 (enExample) 1974-06-14
US3803501A (en) 1974-04-09
FR2207390B1 (enExample) 1976-04-30
IT998646B (it) 1976-02-20
DE2356955A1 (de) 1974-05-22

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Legal Events

Date Code Title Description
OD Request for examination
C3 Grant after two publication steps (3rd publication)
8339 Ceased/non-payment of the annual fee