FR1290500A - Voice frequency signal discriminator - Google Patents

Voice frequency signal discriminator

Info

Publication number
FR1290500A
FR1290500A FR860767A FR860767A FR1290500A FR 1290500 A FR1290500 A FR 1290500A FR 860767 A FR860767 A FR 860767A FR 860767 A FR860767 A FR 860767A FR 1290500 A FR1290500 A FR 1290500A
Authority
FR
France
Prior art keywords
frequency signal
voice frequency
signal discriminator
discriminator
voice
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
FR860767A
Other languages
French (fr)
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to FR860767A priority Critical patent/FR1290500A/en
Application granted granted Critical
Publication of FR1290500A publication Critical patent/FR1290500A/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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
FR860767A 1960-05-09 1961-05-04 Voice frequency signal discriminator Expired FR1290500A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR860767A FR1290500A (en) 1960-05-09 1961-05-04 Voice frequency signal discriminator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2385060 1960-05-09
FR860767A FR1290500A (en) 1960-05-09 1961-05-04 Voice frequency signal discriminator

Publications (1)

Publication Number Publication Date
FR1290500A true FR1290500A (en) 1962-04-13

Family

ID=26190378

Family Applications (1)

Application Number Title Priority Date Filing Date
FR860767A Expired FR1290500A (en) 1960-05-09 1961-05-04 Voice frequency signal discriminator

Country Status (1)

Country Link
FR (1) FR1290500A (en)

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