CH201132A - Receiving device for telephony systems for amplifying speech streams and for receiving signal streams. - Google Patents

Receiving device for telephony systems for amplifying speech streams and for receiving signal streams.

Info

Publication number
CH201132A
CH201132A CH201132DA CH201132A CH 201132 A CH201132 A CH 201132A CH 201132D A CH201132D A CH 201132DA CH 201132 A CH201132 A CH 201132A
Authority
CH
Switzerland
Prior art keywords
streams
telephony systems
receiving
receiving device
receiving signal
Prior art date
Application number
Other languages
German (de)
Inventor
Gloeilampenfabrieken N Philips
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 CH201132A publication Critical patent/CH201132A/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
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency
    • H04Q1/4465—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency the same frequency being used for all signalling information, e.g. A.C. nr.9 system

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Amplifiers (AREA)
CH201132D 1937-01-29 1938-01-27 Receiving device for telephony systems for amplifying speech streams and for receiving signal streams. CH201132A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201132X 1937-01-29

Publications (1)

Publication Number Publication Date
CH201132A true CH201132A (en) 1938-11-15

Family

ID=5764685

Family Applications (1)

Application Number Title Priority Date Filing Date
CH201132D CH201132A (en) 1937-01-29 1938-01-27 Receiving device for telephony systems for amplifying speech streams and for receiving signal streams.

Country Status (4)

Country Link
US (1) US2251958A (en)
CH (1) CH201132A (en)
FR (1) FR832795A (en)
GB (1) GB487488A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR963277A (en) * 1947-02-21 1950-07-05
DE1063220B (en) * 1954-12-16 1959-08-13 Sueddeutsche Telefon App Kabel Tonrufempfaenger or converter for tone selection or tone control purposes for radio systems with selective call systems, in particular for radio networks with mobile radio systems
SG137753A1 (en) * 2006-05-24 2007-12-28 Inventio Ag Elevator with frictional drive

Also Published As

Publication number Publication date
FR832795A (en) 1938-10-03
US2251958A (en) 1941-08-12
GB487488A (en) 1938-06-21

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