CA998178A - Pcm tone receiver using digital spectrum analysis - Google Patents

Pcm tone receiver using digital spectrum analysis

Info

Publication number
CA998178A
CA998178A CA171,515A CA171515A CA998178A CA 998178 A CA998178 A CA 998178A CA 171515 A CA171515 A CA 171515A CA 998178 A CA998178 A CA 998178A
Authority
CA
Canada
Prior art keywords
spectrum analysis
digital spectrum
tone receiver
pcm tone
pcm
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
CA171,515A
Other languages
English (en)
Other versions
CA171515S (en
Inventor
Jeffrey P. Mills
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.)
GTE Automatic Electric Laboratories Inc
Original Assignee
GTE Automatic Electric Laboratories Inc
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 Laboratories Inc filed Critical GTE Automatic Electric Laboratories Inc
Application granted granted Critical
Publication of CA998178A publication Critical patent/CA998178A/en
Expired legal-status Critical Current

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)
CA171,515A 1972-06-01 1973-05-16 Pcm tone receiver using digital spectrum analysis Expired CA998178A (en)

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
CA998178A true CA998178A (en) 1976-10-05

Family

ID=26946891

Family Applications (1)

Application Number Title Priority Date Filing Date
CA171,515A Expired CA998178A (en) 1972-06-01 1973-05-16 Pcm tone receiver using digital spectrum analysis

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
IT987914B (it) 1975-03-20

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