GB1214514A - Digital demodulator - Google Patents

Digital demodulator

Info

Publication number
GB1214514A
GB1214514A GB05626/68A GB1562668A GB1214514A GB 1214514 A GB1214514 A GB 1214514A GB 05626/68 A GB05626/68 A GB 05626/68A GB 1562668 A GB1562668 A GB 1562668A GB 1214514 A GB1214514 A GB 1214514A
Authority
GB
United Kingdom
Prior art keywords
converter
output
fed
circuit
divider
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
GB05626/68A
Other languages
English (en)
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 GB1214514A publication Critical patent/GB1214514A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Superheterodyne Receivers (AREA)
GB05626/68A 1967-07-19 1968-04-01 Digital demodulator Expired GB1214514A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US65441267A 1967-07-19 1967-07-19

Publications (1)

Publication Number Publication Date
GB1214514A true GB1214514A (en) 1970-12-02

Family

ID=24624737

Family Applications (1)

Application Number Title Priority Date Filing Date
GB05626/68A Expired GB1214514A (en) 1967-07-19 1968-04-01 Digital demodulator

Country Status (4)

Country Link
US (1) US3609555A (enExample)
DE (1) DE1616439B1 (enExample)
FR (1) FR1558731A (enExample)
GB (1) GB1214514A (enExample)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983000783A1 (en) * 1981-08-25 1983-03-03 Tavkoezlesi Kutato Intezet Circuit for the suppression of the carrier
GB2184304A (en) * 1985-12-12 1987-06-17 Rank Taylor Hobson Ltd Frequency measurement
US4707666A (en) * 1985-07-27 1987-11-17 Deutsche Itt Industries Gmbh Frequency demodulator circuit with zero-crossing counter

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2203223B1 (enExample) * 1972-10-17 1976-06-04 Anvar
FR2219570B1 (enExample) * 1973-02-22 1976-09-10 Dassault Electronique
US3971988A (en) * 1975-03-06 1976-07-27 Bell Telephone Laboratories, Incorporated AM/FM receiver using spectral parameter estimators
US4278998A (en) * 1980-02-13 1981-07-14 Itt Industries, Inc. Sound channel circuit for frequency-modulated signals
DE3007907A1 (de) * 1980-03-01 1981-09-17 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Digitaler empfaenger
US4525862A (en) * 1980-07-02 1985-06-25 Motorola, Inc. Transform modulation system
US4499426A (en) * 1980-07-02 1985-02-12 Motorola, Inc. Baseband discriminator for frequency or transform modulation
GB2094079A (en) * 1981-02-20 1982-09-08 Philips Electronic Associated Fm demodulator
DE3212054A1 (de) * 1982-04-01 1983-10-06 Blaupunkt Werke Gmbh Digitaler demodulator
GB2149244B (en) * 1983-10-29 1987-01-21 Standard Telephones Cables Ltd Digital demodulator arrangement for quadrature signals
US4541105A (en) * 1984-03-23 1985-09-10 Sundstrand Data Control, Inc. Counting apparatus and method for frequency sampling
US4605903A (en) * 1985-11-07 1986-08-12 Motorola, Inc. FSK demodulator with high noise immunity digital phase detector
US5668836A (en) * 1994-12-29 1997-09-16 Motorola, Inc. Split frequency band signal digitizer and method
US6459333B1 (en) * 2001-02-05 2002-10-01 Motorola, Inc. Differentiate and divide FM demodulator

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983000783A1 (en) * 1981-08-25 1983-03-03 Tavkoezlesi Kutato Intezet Circuit for the suppression of the carrier
US4707666A (en) * 1985-07-27 1987-11-17 Deutsche Itt Industries Gmbh Frequency demodulator circuit with zero-crossing counter
GB2184304A (en) * 1985-12-12 1987-06-17 Rank Taylor Hobson Ltd Frequency measurement
US4807164A (en) * 1985-12-12 1989-02-21 Rank Taylor Hobson Limited Apparatus for measuring and controlling velocity
GB2184304B (en) * 1985-12-12 1989-10-11 Rank Taylor Hobson Ltd Velocity measuring apparatus

Also Published As

Publication number Publication date
US3609555A (en) 1971-09-28
FR1558731A (enExample) 1969-02-28
DE1616439B1 (de) 1970-11-26

Similar Documents

Publication Publication Date Title
GB1214514A (en) Digital demodulator
GB1530602A (en) Demodulator for fm signals
GB987235A (en) Radio altimeters
US3835396A (en) Device for changing frequency of constant amplitude square waves
GB1088151A (en) Digital to phase analog converter
GB1075017A (en) Improvements in fm/am converters
GB1124276A (en) Angle modulated wave demodulating circuits
US3482171A (en) Bidirectional electronic phase shifter
GB1301504A (enExample)
GB1083838A (en) Apparatus for combining arithmetically two numbers
GB1518188A (en) Method and device for determining the phase position between signals
JPS5694435A (en) Multiplying circuit
GB1283910A (en) Colour expansion circuit for a colour television system
GB1462891A (en) Digital filter
US3162758A (en) System for determining the quotient of two amplitude modulated signals
GB1349640A (en) Device for processing a frequency-modulated wave
GB1047531A (en) Receiver and communication system including such a receiver
JPS567527A (en) High speed frequency division circuit
JPS6488274A (en) Gps receiver
GB1036948A (en) Improvements in or relating to adjustable frequency dividers
GB1195188A (en) Improvements in or relating to Phase Measuring Circuit Arrangements.
GB1296665A (enExample)
GB709409A (en) Electronic multiplying apparatus
GB1019725A (en) Generation of the group pilot frequencies in carrier frequency systems
GB709410A (en) A register or accumulator for electronic computing apparatus

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee