CH206315A - Signal receiver in a carrier wave telephony system. - Google Patents

Signal receiver in a carrier wave telephony system.

Info

Publication number
CH206315A
CH206315A CH206315DA CH206315A CH 206315 A CH206315 A CH 206315A CH 206315D A CH206315D A CH 206315DA CH 206315 A CH206315 A CH 206315A
Authority
CH
Switzerland
Prior art keywords
carrier wave
signal receiver
telephony system
wave telephony
receiver
Prior art date
Application number
Other languages
German (de)
Inventor
N. V. Philips' Gloeilampenfabrieken
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Publication of CH206315A publication Critical patent/CH206315A/en

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
    • H04Q1/442—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies
    • H04Q1/4423—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies using one signalling frequency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/14—Arrangements providing for calling or supervisory signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Noise Elimination (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Near-Field Transmission Systems (AREA)
CH206315D 1937-12-27 1938-12-24 Signal receiver in a carrier wave telephony system. CH206315A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP2125D DE1080615B (en) 1937-12-27 1937-12-27 Signal receiver for carrier wave telephony systems

Publications (1)

Publication Number Publication Date
CH206315A true CH206315A (en) 1939-07-31

Family

ID=7357758

Family Applications (1)

Application Number Title Priority Date Filing Date
CH206315D CH206315A (en) 1937-12-27 1938-12-24 Signal receiver in a carrier wave telephony system.

Country Status (7)

Country Link
US (1) US2210957A (en)
BE (3) BE431842A (en)
CH (1) CH206315A (en)
DE (2) DE1080615B (en)
FR (2) FR848015A (en)
GB (3) GB523067A (en)
NL (1) NL52757C (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2564378A (en) * 1946-05-06 1951-08-14 Punch Engineering Pty Ltd Carrier system signaling circuits
BE482215A (en) * 1947-04-29
NL72570C (en) * 1949-09-02
US2721979A (en) * 1950-07-07 1955-10-25 Westinghouse Air Brake Co Switching and control means for carrier signaling and communication equipments
NL102595C (en) * 1956-04-26

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT91298B (en) * 1915-12-01 1923-02-10 Western Electric Co Ltd Device for simultaneous telegraphing and telephoning with or without wire.
US1484405A (en) * 1920-01-12 1924-02-19 Western Electric Co Signaling system
DE497115C (en) * 1928-12-29 1930-05-02 Lorenz Akt Ges C Arrangement for achieving high selectivity of electrical receiving devices
AT140823B (en) * 1932-12-22 1935-02-25 Siemens Ag Multiple transmission system with carrier currents, especially for cable lines.
GB460428A (en) * 1935-08-24 1937-01-27 Philips Nv Improvements in or relating to the transmission of ringing signals in carrier frequency telephony systems

Also Published As

Publication number Publication date
GB523068A (en) 1940-07-04
GB504711A (en) 1939-04-28
FR848016A (en) 1939-10-20
DE753441C (en) 1944-08-03
NL52757C (en)
BE431842A (en)
BE431843A (en)
DE1080615B (en) 1960-04-28
GB523067A (en) 1940-07-04
FR848015A (en) 1939-10-20
US2210957A (en) 1940-08-13
BE431870A (en)

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