JPS569075B2 - - Google Patents

Info

Publication number
JPS569075B2
JPS569075B2 JP9457375A JP9457375A JPS569075B2 JP S569075 B2 JPS569075 B2 JP S569075B2 JP 9457375 A JP9457375 A JP 9457375A JP 9457375 A JP9457375 A JP 9457375A JP S569075 B2 JPS569075 B2 JP S569075B2
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
JP9457375A
Other languages
Japanese (ja)
Other versions
JPS5234608A (en
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
Priority to JP50094573A priority Critical patent/JPS5234608A/en
Publication of JPS5234608A publication Critical patent/JPS5234608A/en
Publication of JPS569075B2 publication Critical patent/JPS569075B2/ja
Granted 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
    • H04Q1/453—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
JP50094573A 1975-08-01 1975-08-01 Multifrequency signal receiving system Granted JPS5234608A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50094573A JPS5234608A (en) 1975-08-01 1975-08-01 Multifrequency signal receiving system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50094573A JPS5234608A (en) 1975-08-01 1975-08-01 Multifrequency signal receiving system

Publications (2)

Publication Number Publication Date
JPS5234608A JPS5234608A (en) 1977-03-16
JPS569075B2 true JPS569075B2 (en) 1981-02-27

Family

ID=14114032

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50094573A Granted JPS5234608A (en) 1975-08-01 1975-08-01 Multifrequency signal receiving system

Country Status (1)

Country Link
JP (1) JPS5234608A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58162073U (en) * 1982-04-22 1983-10-28 株式会社精工舎 Dial mounting structure for watches, etc.

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS546404A (en) * 1977-06-17 1979-01-18 Nippon Telegr & Teleph Corp <Ntt> Multi-frequency signal mixer with control circuit for signal transmission time-length
JPS5828995B2 (en) * 1977-12-28 1983-06-20 富士通株式会社 Multi-frequency signal detection method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3795775A (en) * 1972-10-16 1974-03-05 Microsystems Int Ltd Dual tone receiver
JPS507883A (en) * 1973-05-23 1975-01-27
US3875347A (en) * 1973-10-01 1975-04-01 Gte Automatic Electric Lab Inc Multifrequency signal receiver

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3795775A (en) * 1972-10-16 1974-03-05 Microsystems Int Ltd Dual tone receiver
JPS507883A (en) * 1973-05-23 1975-01-27
US3875347A (en) * 1973-10-01 1975-04-01 Gte Automatic Electric Lab Inc Multifrequency signal receiver

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58162073U (en) * 1982-04-22 1983-10-28 株式会社精工舎 Dial mounting structure for watches, etc.

Also Published As

Publication number Publication date
JPS5234608A (en) 1977-03-16

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