JPS51112218A - Multifrequency signal receiver - Google Patents

Multifrequency signal receiver

Info

Publication number
JPS51112218A
JPS51112218A JP50036747A JP3674775A JPS51112218A JP S51112218 A JPS51112218 A JP S51112218A JP 50036747 A JP50036747 A JP 50036747A JP 3674775 A JP3674775 A JP 3674775A JP S51112218 A JPS51112218 A JP S51112218A
Authority
JP
Japan
Prior art keywords
signal receiver
multifrequency signal
multifrequency
versatility
employing
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.)
Pending
Application number
JP50036747A
Other languages
Japanese (ja)
Inventor
Hiroshi Kuwabara
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP50036747A priority Critical patent/JPS51112218A/en
Publication of JPS51112218A publication Critical patent/JPS51112218A/en
Pending 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

PURPOSE:To increase processing efficiency and versatility and obtain an economical receiver by employing a digital Fourier transformation circuit and utilizing it in a multiple structure.
JP50036747A 1975-03-28 1975-03-28 Multifrequency signal receiver Pending JPS51112218A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50036747A JPS51112218A (en) 1975-03-28 1975-03-28 Multifrequency signal receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50036747A JPS51112218A (en) 1975-03-28 1975-03-28 Multifrequency signal receiver

Publications (1)

Publication Number Publication Date
JPS51112218A true JPS51112218A (en) 1976-10-04

Family

ID=12478314

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50036747A Pending JPS51112218A (en) 1975-03-28 1975-03-28 Multifrequency signal receiver

Country Status (1)

Country Link
JP (1) JPS51112218A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55137788A (en) * 1979-02-22 1980-10-27 Northern Telecom Ltd Digital signal receiver for receiving pcm voice

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55137788A (en) * 1979-02-22 1980-10-27 Northern Telecom Ltd Digital signal receiver for receiving pcm voice

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