GB1507638A - Receiver for synchronous data signals - Google Patents

Receiver for synchronous data signals

Info

Publication number
GB1507638A
GB1507638A GB48091/76A GB4809176A GB1507638A GB 1507638 A GB1507638 A GB 1507638A GB 48091/76 A GB48091/76 A GB 48091/76A GB 4809176 A GB4809176 A GB 4809176A GB 1507638 A GB1507638 A GB 1507638A
Authority
GB
United Kingdom
Prior art keywords
data
circuit
clock
phase
comparators
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
GB48091/76A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries Ltd
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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1507638A publication Critical patent/GB1507638A/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
    • H04L27/10—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
    • H04L27/152—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using controlled oscillators, e.g. PLL arrangements
    • 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
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
    • H04L7/027—Speed or phase control by the received code signals, the signals containing no special synchronisation information extracting the synchronising or clock signal from the received signal spectrum, e.g. by using a resonant or bandpass circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

1507638 APC systems PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 18 Nov 1976 [21 Nov 1975] 48091/76 Heading H3A In a synchronous data receiver for receiving FSK or vestigial sideband with suppressed carrier modulated binary data signals, an arrangement for synchronizing a local clock 7 with the received data and suitable for symbol regeneration or synchronous demodulation comprises a non-linear circuit 4 e.g. a squarer, a phase lock loop adapted for avoiding large phase fluctuations caused by a long series of identical symbols in the input data and including the clock 7, phase comparators 11, 12 connected to receive the data via 4 and via a circuit 19, signals which are different in frequency but related to the clock and a circuit 20 which combines the detector outputs to form a control signal for the clock. When echo modulation is used and the data components received by the comparators 11, 12 are integral multiples of the basic symbol rate, the circuit 19 may be as in Fig. 3 (not shown). In an embodiment the signal is switched between f c and ¢f c by the data and the squaring circuit 4 produces therefrom 2f c and f c . The oscillator operates at 2f c and is divided by 2 at 21 so that one or other of the phase comparators provides a reference signal when data is unchanging.
GB48091/76A 1975-11-21 1976-11-18 Receiver for synchronous data signals Expired GB1507638A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7513610A NL7513610A (en) 1975-11-21 1975-11-21 RECEIVER FOR SYNCHRONOUS SIGNALS WITH DOUBLE PHASE-LOCKED LOOP.

Publications (1)

Publication Number Publication Date
GB1507638A true GB1507638A (en) 1978-04-19

Family

ID=19824895

Family Applications (1)

Application Number Title Priority Date Filing Date
GB48091/76A Expired GB1507638A (en) 1975-11-21 1976-11-18 Receiver for synchronous data signals

Country Status (8)

Country Link
JP (1) JPS5264260A (en)
AU (1) AU507254B2 (en)
CA (1) CA1066782A (en)
DE (1) DE2651043C3 (en)
FR (1) FR2332660A1 (en)
GB (1) GB1507638A (en)
NL (1) NL7513610A (en)
SE (1) SE410693B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107037487A (en) * 2016-02-04 2017-08-11 中石化石油工程技术服务有限公司 Electromagnetism synchronized measurement system between a kind of well

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2823343B1 (en) * 1978-05-29 1979-08-16 Siemens Ag Method and arrangement for clock signal recovery in digital signal transmission
FR2441298A1 (en) * 1978-11-07 1980-06-06 Cit Alcatel RHYTHM RECOVERY DEVICE
JPS55165648A (en) * 1979-06-12 1980-12-24 Nec Corp Method of sorting and inspecting semiconductor device
ZA805414B (en) * 1979-09-14 1981-08-26 Plessey Overseas Arrangements for data timing recovery from distorted signals for use in adaptive modems with multi-level coding
JP2804755B2 (en) * 1986-09-01 1998-09-30 株式会社日立製作所 FSK signal demodulation circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107037487A (en) * 2016-02-04 2017-08-11 中石化石油工程技术服务有限公司 Electromagnetism synchronized measurement system between a kind of well
CN107037487B (en) * 2016-02-04 2023-06-20 中国石油化工集团有限公司 Interwell electromagnetic synchronous measurement system

Also Published As

Publication number Publication date
CA1066782A (en) 1979-11-20
FR2332660A1 (en) 1977-06-17
DE2651043C3 (en) 1981-07-30
DE2651043A1 (en) 1977-05-26
NL7513610A (en) 1977-05-24
SE410693B (en) 1979-10-22
AU1976376A (en) 1978-05-25
AU507254B2 (en) 1980-02-07
SE7612875L (en) 1977-05-22
JPS5264260A (en) 1977-05-27
DE2651043B2 (en) 1980-09-11

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Legal Events

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