GB1252948A - - Google Patents

Info

Publication number
GB1252948A
GB1252948A GB1252948DA GB1252948A GB 1252948 A GB1252948 A GB 1252948A GB 1252948D A GB1252948D A GB 1252948DA GB 1252948 A GB1252948 A GB 1252948A
Authority
GB
United Kingdom
Prior art keywords
detector
phase
phase difference
line
frequency
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
Other languages
English (en)
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 filed Critical
Publication of GB1252948A publication Critical patent/GB1252948A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/20—Frequency-division multiplex systems in which at least one carrier is angle-modulated

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
GB1252948D 1968-06-29 1969-06-24 Expired GB1252948A (US07534539-20090519-C00280.png)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP4546768 1968-06-29
JP8439068 1968-11-19

Publications (1)

Publication Number Publication Date
GB1252948A true GB1252948A (US07534539-20090519-C00280.png) 1971-11-10

Family

ID=26385463

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1252948D Expired GB1252948A (US07534539-20090519-C00280.png) 1968-06-29 1969-06-24

Country Status (2)

Country Link
US (1) US3737578A (US07534539-20090519-C00280.png)
GB (1) GB1252948A (US07534539-20090519-C00280.png)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE792086A (fr) * 1971-12-03 1973-05-29 Centre Nat Etd Spatiales Dispositif de decommutation, notamment pour une liaison avec unengin spatial
US3859459A (en) * 1973-02-16 1975-01-07 Exxon Research Engineering Co FM demodulator circuit for a facsimile system
US3984777A (en) * 1973-04-20 1976-10-05 Nippon Electric Company, Ltd. Carrier wave reproducer device for use in the reception of a multi-phase phase-modulated wave
CH582977A5 (US07534539-20090519-C00280.png) * 1974-08-22 1976-12-15 Centre Electron Horloger
US4011407A (en) * 1976-02-26 1977-03-08 Rca Corporation Narrow-band eight-phase modem
US4215427A (en) * 1978-02-27 1980-07-29 Sangamo Weston, Inc. Carrier tracking apparatus and method for a logging-while-drilling system
FR2440660A1 (fr) * 1978-10-31 1980-05-30 Thomson Csf Repeteur hertzien numerique a regeneration et reseau de transmission comportant de tels repeteurs
US4334312A (en) * 1979-08-10 1982-06-08 Nippon Electric Co., Ltd. Phase synchronizing circuit for use in multi-level, multi-phase, superposition-modulated signal transmission system
US4355404A (en) * 1980-05-27 1982-10-19 Communications Satellite Corporation Carrier recovery network for QPSK modems employing synchronized oscillators
US5126998A (en) * 1990-05-16 1992-06-30 U.V. Satellite Resources, Inc. Method and apparatus for transmitting and receiving a carrier signal which is simultaneously frequency and phase modulated
US5606581A (en) * 1994-03-17 1997-02-25 Myers; Glen A. Method and apparatus for the cancellation of interference in electrical systems

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2369663A (en) * 1942-02-28 1945-02-20 Bell Telephone Labor Inc Synchronizing system
US3065427A (en) * 1958-08-29 1962-11-20 Texas Instruments Inc Phase sensitive detector
US3196369A (en) * 1960-08-05 1965-07-20 Bosch Arma Corp Diode modulator with distortionreducing circuit
US3353101A (en) * 1960-12-28 1967-11-14 Kokusai Denshin Denwa Co Ltd Demodulation apparatus for phasemodulated telegraphic code
US3100871A (en) * 1961-01-03 1963-08-13 Motorola Inc Single sideband receiver having squelch and phase-locked detection means
US3518680A (en) * 1967-10-02 1970-06-30 North American Rockwell Carrier phase lock apparatus using correlation between received quadrature phase components

Also Published As

Publication number Publication date
US3737578A (en) 1973-06-05
DE1930980B2 (de) 1977-01-13
DE1930980A1 (de) 1970-04-23

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees