JPS5517537B2 - - Google Patents

Info

Publication number
JPS5517537B2
JPS5517537B2 JP7715473A JP7715473A JPS5517537B2 JP S5517537 B2 JPS5517537 B2 JP S5517537B2 JP 7715473 A JP7715473 A JP 7715473A JP 7715473 A JP7715473 A JP 7715473A JP S5517537 B2 JPS5517537 B2 JP S5517537B2
Authority
JP
Japan
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
JP7715473A
Other languages
Japanese (ja)
Other versions
JPS4946808A (cg-RX-API-DMAC7.html
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 JPS4946808A publication Critical patent/JPS4946808A/ja
Publication of JPS5517537B2 publication Critical patent/JPS5517537B2/ja
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/22—Arrangements affording multiple use of the transmission path using time-division multiplexing
    • H04L5/24—Arrangements affording multiple use of the transmission path using time-division multiplexing with start-stop synchronous converters
    • H04L5/245—Arrangements affording multiple use of the transmission path using time-division multiplexing with start-stop synchronous converters with a number of discharge tubes or semiconductor elements which successively connect the different channels to the transmission channels
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Time-Division Multiplex Systems (AREA)
JP7715473A 1972-08-07 1973-07-10 Expired JPS5517537B2 (cg-RX-API-DMAC7.html)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US27832472A 1972-08-07 1972-08-07

Publications (2)

Publication Number Publication Date
JPS4946808A JPS4946808A (cg-RX-API-DMAC7.html) 1974-05-07
JPS5517537B2 true JPS5517537B2 (cg-RX-API-DMAC7.html) 1980-05-12

Family

ID=23064556

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7715473A Expired JPS5517537B2 (cg-RX-API-DMAC7.html) 1972-08-07 1973-07-10

Country Status (7)

Country Link
US (1) US3773981A (cg-RX-API-DMAC7.html)
JP (1) JPS5517537B2 (cg-RX-API-DMAC7.html)
CA (1) CA1010543A (cg-RX-API-DMAC7.html)
DE (1) DE2334566C2 (cg-RX-API-DMAC7.html)
FR (1) FR2195880B1 (cg-RX-API-DMAC7.html)
GB (1) GB1383168A (cg-RX-API-DMAC7.html)
IT (1) IT992576B (cg-RX-API-DMAC7.html)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3870826A (en) * 1973-12-21 1975-03-11 Bell Telephone Labor Inc Tone control system for a time division switching system
US3931480A (en) * 1974-09-04 1976-01-06 Gte Sylvania Incorporated Time compression receiver
US4108038A (en) * 1975-04-04 1978-08-22 Nippon Gakki Seizo Kabushiki Kaisha Time shared tone keying system in electronic musical instrument
US4185172A (en) 1976-12-17 1980-01-22 Cselt - Centro Studi E Laboratori Telecomunicazioni S.P.A. Method of and means for detecting digitized multi frequency-coded signals
IT1072242B (it) * 1976-12-17 1985-04-10 Cselt Centro Studi Lab Telecom Procedimento e dispositivo per il riconoscimento di segnali telefonici in codice multifrequenza convertiti in forma numerica
JPS6017279B2 (ja) * 1978-12-06 1985-05-01 株式会社日立製作所 多周波信号受信装置
US4908825A (en) * 1988-04-08 1990-03-13 Northern Telecom Limited Memory organization and output sequencer for a signal processor
US6931076B2 (en) * 2002-12-31 2005-08-16 Intel Corporation Signal detector

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3466397A (en) * 1965-12-14 1969-09-09 Bell Telephone Labor Inc Character at a time data multiplexing system
DE1287643B (cg-RX-API-DMAC7.html) * 1966-09-17 1969-01-23
DE1537817B1 (de) * 1967-08-22 1970-02-26 Siemens Ag Schaltungsanordnung zur Aufnahme und Verarbeitung von Schaltkennzeichen in Fernmelde-,insbesondere Fernsprechvermittlungsanlagen
DE1791135C3 (de) * 1968-09-20 1978-10-05 Telefunken Patentverwertungsgesellschaft Mbh, 7900 Ulm Nachrichtenübertragungssystem unter Anwendung eines Zeit- oder Frequenzmultiplex-Verfahrens
US3578919A (en) * 1968-12-30 1971-05-18 Bell Telephone Labor Inc Time compression tone detector
US3603725A (en) * 1970-01-15 1971-09-07 Bell Telephone Labor Inc Conditional replenishment video system with reduced buffer memory delay

Also Published As

Publication number Publication date
JPS4946808A (cg-RX-API-DMAC7.html) 1974-05-07
FR2195880B1 (cg-RX-API-DMAC7.html) 1978-04-28
FR2195880A1 (cg-RX-API-DMAC7.html) 1974-03-08
IT992576B (it) 1975-09-30
CA1010543A (en) 1977-05-17
GB1383168A (en) 1975-02-05
DE2334566C2 (de) 1982-06-03
US3773981A (en) 1973-11-20
DE2334566A1 (de) 1974-02-21

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