IT987914B - Ricevitore di segnali a frequenza vocale modulati ad impulsi codifi cati usando l analisi numerica dello spettro - Google Patents

Ricevitore di segnali a frequenza vocale modulati ad impulsi codifi cati usando l analisi numerica dello spettro

Info

Publication number
IT987914B
IT987914B IT24616/73A IT2461673A IT987914B IT 987914 B IT987914 B IT 987914B IT 24616/73 A IT24616/73 A IT 24616/73A IT 2461673 A IT2461673 A IT 2461673A IT 987914 B IT987914 B IT 987914B
Authority
IT
Italy
Prior art keywords
frequency signal
signal receiver
spectrum analysis
voice frequency
pulse modulated
Prior art date
Application number
IT24616/73A
Other languages
English (en)
Original Assignee
Gte Automatic Electric Labora
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 Gte Automatic Electric Labora filed Critical Gte Automatic Electric Labora
Application granted granted Critical
Publication of IT987914B publication Critical patent/IT987914B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
    • H04Q1/457—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals
    • H04Q1/4575—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals which are transmitted in digital form
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/12—Arrangements providing for calling or supervisory signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
IT24616/73A 1972-06-01 1973-05-25 Ricevitore di segnali a frequenza vocale modulati ad impulsi codifi cati usando l analisi numerica dello spettro IT987914B (it)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US25879972A 1972-06-01 1972-06-01
US309020A US3863030A (en) 1972-06-01 1972-11-24 Pcm tone receiver using digital spectrum analysis

Publications (1)

Publication Number Publication Date
IT987914B true IT987914B (it) 1975-03-20

Family

ID=26946891

Family Applications (1)

Application Number Title Priority Date Filing Date
IT24616/73A IT987914B (it) 1972-06-01 1973-05-25 Ricevitore di segnali a frequenza vocale modulati ad impulsi codifi cati usando l analisi numerica dello spettro

Country Status (3)

Country Link
US (1) US3863030A (it)
CA (1) CA998178A (it)
IT (1) IT987914B (it)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7316990A (nl) * 1973-12-12 1975-06-16 Philips Nv Mfc-ontvanger voor digitale signaalverwerking.
JPS5548752B2 (it) * 1974-05-17 1980-12-08
FR2287811A1 (fr) * 1974-10-08 1976-05-07 Cit Alcatel Regulateur de niveau de type numerique
FR2299769A1 (fr) * 1975-01-31 1976-08-27 Telecommunications Sa Procede d'application
GB1538995A (en) * 1976-03-10 1979-01-24 Chestel Inc Time division multiplexed pabx communication switching system
US4245325A (en) * 1978-02-24 1981-01-13 Nippon Telegraph And Telephone Public Corporation Digital multifrequency signalling receiver
CA1111531A (en) * 1979-02-22 1981-10-27 Jackylene K. Hood Digital signalling receiver for receiving pcm tones
US4203008A (en) * 1979-02-26 1980-05-13 Northern Telecom Limited Digital signalling receiver for receiving PCM tones
NL7903346A (nl) * 1979-04-27 1980-10-29 Bell Telephone Mfg Digitaal signaleringsstelsel.
US4277650A (en) * 1979-07-02 1981-07-07 Northern Telecom Limited Single frequency tone receiver
US4354248A (en) * 1979-11-28 1982-10-12 Motorola, Inc. Programmable multifrequency tone receiver
US4399536A (en) * 1981-10-02 1983-08-16 Bell Telephone Laboratories, Incorporated Convolution filter arrangement for digital multifrequency receiver
CA1216380A (en) * 1984-11-09 1987-01-06 Gordon J. Reesor Digital tone detector
US4709344A (en) * 1985-10-02 1987-11-24 Motorola, Inc. Programmable multifrequency digital tone receiver
US4838259A (en) * 1986-01-27 1989-06-13 Advanced Pulmonary Technologies, Inc. Multi-frequency jet ventilation technique and apparatus
CA1290083C (en) * 1987-06-10 1991-10-01 Grass Valley Group, Inc. (The) Analog "blue" signal detector
US5262957A (en) * 1990-11-09 1993-11-16 Global Communications, Inc. Inexpensive portable RF spectrum analyzer with calibration features

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3548107A (en) * 1968-04-30 1970-12-15 Webb James E Signal processing apparatus for multiplex transmission
US3544723A (en) * 1968-11-29 1970-12-01 Bell Telephone Labor Inc Tone detector
US3578919A (en) * 1968-12-30 1971-05-18 Bell Telephone Labor Inc Time compression tone detector
US3710028A (en) * 1970-11-10 1973-01-09 Gte Automatic Electric Lab Inc Detector for digitally transmitted multifrequency tones as utilized for signaling in a pulse code modulated telephone system

Also Published As

Publication number Publication date
US3863030A (en) 1975-01-28
CA998178A (en) 1976-10-05

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