CA995760A - Carrier detection circuit - Google Patents

Carrier detection circuit

Info

Publication number
CA995760A
CA995760A CA151,425A CA151425A CA995760A CA 995760 A CA995760 A CA 995760A CA 151425 A CA151425 A CA 151425A CA 995760 A CA995760 A CA 995760A
Authority
CA
Canada
Prior art keywords
detection circuit
carrier detection
carrier
circuit
detection
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
CA151,425A
Other languages
English (en)
Other versions
CA151425S (en
Inventor
Robert M. Tink
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.)
NCR Voyix Corp
Original Assignee
NCR 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 NCR Corp filed Critical NCR Corp
Application granted granted Critical
Publication of CA995760A publication Critical patent/CA995760A/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
    • H04L1/206—Arrangements for detecting or preventing errors in the information received using signal quality detector for modulated signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Communication Control (AREA)
CA151,425A 1971-09-16 1972-09-11 Carrier detection circuit Expired CA995760A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US18116671A 1971-09-16 1971-09-16

Publications (1)

Publication Number Publication Date
CA995760A true CA995760A (en) 1976-08-24

Family

ID=22663161

Family Applications (1)

Application Number Title Priority Date Filing Date
CA151,425A Expired CA995760A (en) 1971-09-16 1972-09-11 Carrier detection circuit

Country Status (7)

Country Link
US (1) US3711777A (OSRAM)
JP (1) JPS4838962A (OSRAM)
CA (1) CA995760A (OSRAM)
ES (1) ES406588A1 (OSRAM)
FR (1) FR2154076A5 (OSRAM)
GB (1) GB1355160A (OSRAM)
NL (1) NL7212561A (OSRAM)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3766479A (en) * 1971-10-04 1973-10-16 Ncr Carrier detection circuit
US3882272A (en) * 1973-12-21 1975-05-06 Xerox Corp Carrier detector
US4009356A (en) * 1974-01-31 1977-02-22 Milgo Electronic Corporation Data modems having data drop-out and data echo protection
DE2905471B1 (de) * 1979-02-13 1980-02-21 Siemens Ag System zum Empfang frequenzmodulierter digitaler Nachrichtensignale
DE2628997C3 (de) * 1976-06-28 1978-11-30 Siemens Ag, 1000 Berlin Und 8000 Muenchen System zum Empfang frequenzmodulierter digitaler Nachrichtensignale
US4528678A (en) * 1983-07-05 1985-07-09 Westinghouse Electric Corp. Nonlinear noise reduction apparatus with memory
USRE37141E1 (en) 1984-09-10 2001-04-17 Spectrum Information Technologies, Inc. Cellular telephone data communication system and method
US4697281A (en) 1986-03-14 1987-09-29 Spectrum Cellular Communications Corporation, Inc. Cellular telephone data communication system and method
ATE121954T1 (de) * 1988-08-24 1995-05-15 Marvin J Slepian Endoluminale dichtung mit bisdegradierbaren polymeren.
US4972457A (en) 1989-01-19 1990-11-20 Spectrum Information Technologies, Inc. Portable hybrid communication system and methods
USRE38645E1 (en) 1989-01-19 2004-11-02 Mlr, Llc Portable hybrid communication system and methods
US5127041A (en) * 1990-06-01 1992-06-30 Spectrum Information Technologies, Inc. System and method for interfacing computers to diverse telephone networks
US5249218A (en) * 1992-04-06 1993-09-28 Spectrum Information Technologies, Inc. Programmable universal interface system
US5530737A (en) * 1993-03-22 1996-06-25 Phonex Corporation Secure access telephone extension system and method
US5743633A (en) * 1995-12-27 1998-04-28 Physical Optics Corporation Bar code illuminator

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3628058A (en) * 1970-02-24 1971-12-14 Motorola Inc Integrated dual time constant squelch circuit
US3654555A (en) * 1970-08-19 1972-04-04 Motorola Inc Carrier and tone squelch circuit with elimination of noise at end of transmission

Also Published As

Publication number Publication date
ES406588A1 (es) 1975-10-01
NL7212561A (OSRAM) 1973-03-20
FR2154076A5 (OSRAM) 1973-05-04
DE2244653B2 (de) 1977-02-10
GB1355160A (en) 1974-06-05
US3711777A (en) 1973-01-16
DE2244653A1 (de) 1973-03-22
JPS4838962A (OSRAM) 1973-06-08

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