JPS5244106A - Multi-frequency signal receiver - Google Patents

Multi-frequency signal receiver

Info

Publication number
JPS5244106A
JPS5244106A JP50119741A JP11974175A JPS5244106A JP S5244106 A JPS5244106 A JP S5244106A JP 50119741 A JP50119741 A JP 50119741A JP 11974175 A JP11974175 A JP 11974175A JP S5244106 A JPS5244106 A JP S5244106A
Authority
JP
Japan
Prior art keywords
frequency signal
signal receiver
signal
frequency
maltiplier
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.)
Granted
Application number
JP50119741A
Other languages
Japanese (ja)
Other versions
JPS5918916B2 (en
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 JP50119741A priority Critical patent/JPS5918916B2/en
Priority to US05/729,255 priority patent/US4080516A/en
Publication of JPS5244106A publication Critical patent/JPS5244106A/en
Publication of JPS5918916B2 publication Critical patent/JPS5918916B2/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

Landscapes

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

Abstract

PURPOSE:Signal frequency BPF output detection circuit and maltiplier coefficient control circuit are added in order to decrease the channel number to be used. As a result, the usage coefficiency of digital filter for detection of frequency signal, etc. can be increased.
JP50119741A 1975-10-06 1975-10-06 multifrequency signal receiver Expired JPS5918916B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP50119741A JPS5918916B2 (en) 1975-10-06 1975-10-06 multifrequency signal receiver
US05/729,255 US4080516A (en) 1975-10-06 1976-10-04 Multi-frequency signal receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50119741A JPS5918916B2 (en) 1975-10-06 1975-10-06 multifrequency signal receiver

Publications (2)

Publication Number Publication Date
JPS5244106A true JPS5244106A (en) 1977-04-06
JPS5918916B2 JPS5918916B2 (en) 1984-05-01

Family

ID=14768972

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50119741A Expired JPS5918916B2 (en) 1975-10-06 1975-10-06 multifrequency signal receiver

Country Status (1)

Country Link
JP (1) JPS5918916B2 (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

Also Published As

Publication number Publication date
JPS5918916B2 (en) 1984-05-01

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