JPS4421056B1 - - Google Patents

Info

Publication number
JPS4421056B1
JPS4421056B1 JP2866167A JP2866167A JPS4421056B1 JP S4421056 B1 JPS4421056 B1 JP S4421056B1 JP 2866167 A JP2866167 A JP 2866167A JP 2866167 A JP2866167 A JP 2866167A JP S4421056 B1 JPS4421056 B1 JP S4421056B1
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.)
Pending
Application number
JP2866167A
Other languages
Japanese (ja)
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
Priority to US54816466 priority Critical patent/US3443159A/en
Application filed filed Critical
Priority to JP2866167A priority patent/JPS4421056B1/ja
Publication of JPS4421056B1 publication Critical patent/JPS4421056B1/ja
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0061—Details of emergency protective circuit arrangements concerning transmission of signals
    • H02H1/0084—Details of emergency protective circuit arrangements concerning transmission of signals by means of pilot wires or a telephone network; watching of these wires
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
    • H02H7/262—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of switching or blocking orders
JP2866167A 1966-05-06 1967-05-06 Pending JPS4421056B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US54816466 US3443159A (en) 1966-05-06 1966-05-06 Frequency shift relaying apparatus
JP2866167A JPS4421056B1 (en) 1966-05-06 1967-05-06

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US54816466 US3443159A (en) 1966-05-06 1966-05-06 Frequency shift relaying apparatus
JP2866167A JPS4421056B1 (en) 1966-05-06 1967-05-06

Publications (1)

Publication Number Publication Date
JPS4421056B1 true JPS4421056B1 (en) 1969-09-09

Family

ID=52823392

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2866167A Pending JPS4421056B1 (en) 1966-05-06 1967-05-06

Country Status (2)

Country Link
US (1) US3443159A (en)
JP (1) JPS4421056B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3643160A (en) * 1970-03-19 1972-02-15 Westinghouse Electric Corp Three-frequency relaying system
US4056838A (en) * 1976-09-20 1977-11-01 Westinghouse Electric Corporation In-band signal-to-noise ratio monitor for an FSK relaying system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3117305A (en) * 1960-12-02 1964-01-07 Goldberg Bernard Frequency shift transmission system
FR1342808A (en) * 1962-08-23 1963-11-15 Electricite De France Improvements in power line signal transmission systems
US3353102A (en) * 1963-12-26 1967-11-14 Bell Telephone Labor Inc Frequency shift receiver with noise frequency detection
US3384822A (en) * 1964-03-21 1968-05-21 Nippon Electric Co Frequency-shift-keying phase-modulation code transmission system

Also Published As

Publication number Publication date
US3443159A (en) 1969-05-06

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