CH437439A - Tonfrequentes Tastwahlverfahren - Google Patents

Tonfrequentes Tastwahlverfahren

Info

Publication number
CH437439A
CH437439A CH1702665A CH1702665A CH437439A CH 437439 A CH437439 A CH 437439A CH 1702665 A CH1702665 A CH 1702665A CH 1702665 A CH1702665 A CH 1702665A CH 437439 A CH437439 A CH 437439A
Authority
CH
Switzerland
Prior art keywords
tone
dialing method
touch dialing
frequency touch
frequency
Prior art date
Application number
CH1702665A
Other languages
English (en)
Inventor
Baade Otto
Gasser Lorenz
Original Assignee
Int Standard Electric Corp
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 Int Standard Electric Corp filed Critical Int Standard Electric Corp
Publication of CH437439A publication Critical patent/CH437439A/de

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
    • B21C37/047—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire of fine wires
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/62—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for providing a predistortion of the signal in the transmitter and corresponding correction in the receiver, e.g. for improving the signal/noise ratio
    • H04B1/64—Volume compression or expansion arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0008—Selecting arrangements using relay selectors in the switching stages
    • H04Q3/0012—Selecting arrangements using relay selectors in the switching stages in which the relays are arranged in a matrix configuration

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mechanical Engineering (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
CH1702665A 1964-12-15 1965-12-09 Tonfrequentes Tastwahlverfahren CH437439A (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DEST23083A DE1232214B (de) 1964-12-15 1964-12-15 Tonfrequentes Tastwahlverfahren fuer Fernmelde-, insbesondere Fernsprechanlagen
DE1232213 1964-12-15
DEST23082A DE1232213B (de) 1964-12-15 1964-12-15 Tonfrequentes Tastwahlverfahren fuer Fernmelde-, insbesondere Fernsprechanlagen
DEST23097A DE1236026B (de) 1964-12-15 1964-12-17 Wahlaufnahmeeinrichtung fuer Tastwahl-codezeichen, die aus einem Gleichstrom-Vorbereitungszeichen und einer sprachsicheren tonfrequenten Zeichenfrequenzkombination gebildet sind
DEST23111A DE1232215B (de) 1964-12-15 1964-12-19 Tonfrequentes Tastwahlverfahren in Fernmelde-, insbesondere Fernsprechanlagen

Publications (1)

Publication Number Publication Date
CH437439A true CH437439A (de) 1967-06-15

Family

ID=27509827

Family Applications (5)

Application Number Title Priority Date Filing Date
CH1702565A CH444239A (de) 1964-12-15 1965-12-09 Tonfrequentes Tastwahlverfahren
CH1702665A CH437439A (de) 1964-12-15 1965-12-09 Tonfrequentes Tastwahlverfahren
CH1715665A CH454967A (de) 1964-12-15 1965-12-13 Wahlaufnahmeverfahren für Tastwahlcodezeichen, die aus einem Gleichstrom-Schlüsselzeichen und einer sprachsicheren tonfrequenten Signalfrequenzkombination gebildet sind, und Einrichtung zur Durchführung des Verfahrens
CH1715765A CH444240A (de) 1964-12-15 1965-12-13 Tonfrequentes Tastwahlverfahren
CH797566A CH454067A (de) 1964-12-15 1966-06-02 Verfahren zum Vermindern des Querschnittes einer Mehrzahl von Elementen und dessen Erzeugnis

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CH1702565A CH444239A (de) 1964-12-15 1965-12-09 Tonfrequentes Tastwahlverfahren

Family Applications After (3)

Application Number Title Priority Date Filing Date
CH1715665A CH454967A (de) 1964-12-15 1965-12-13 Wahlaufnahmeverfahren für Tastwahlcodezeichen, die aus einem Gleichstrom-Schlüsselzeichen und einer sprachsicheren tonfrequenten Signalfrequenzkombination gebildet sind, und Einrichtung zur Durchführung des Verfahrens
CH1715765A CH444240A (de) 1964-12-15 1965-12-13 Tonfrequentes Tastwahlverfahren
CH797566A CH454067A (de) 1964-12-15 1966-06-02 Verfahren zum Vermindern des Querschnittes einer Mehrzahl von Elementen und dessen Erzeugnis

Country Status (8)

Country Link
US (1) US3482051A (de)
AT (1) AT277329B (de)
BE (4) BE673759A (de)
CH (5) CH444239A (de)
DE (4) DE1232214B (de)
FR (1) FR1459635A (de)
NL (4) NL6516301A (de)
SE (1) SE331301B (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3911223A (en) * 1971-12-02 1975-10-07 Siemens Ag Circuit arrangement for subscriber stations in telecommunications installations, especially telephone installations with auxiliary data traffic

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2332912A (en) * 1942-05-01 1943-10-26 Bell Telephone Labor Inc Telephone system
FR81782E (de) * 1961-06-19 1964-01-31
US3319011A (en) * 1964-05-11 1967-05-09 Bell Telephone Labor Inc Multifrequency signal receiver circuit

Also Published As

Publication number Publication date
DE1232214B (de) 1967-01-12
BE673897A (de) 1966-06-17
CH444239A (de) 1967-09-30
NL6516307A (de) 1966-06-20
BE673759A (de) 1966-06-15
SE331301B (de) 1970-12-21
FR1459635A (fr) 1966-11-18
NL6516306A (de) 1966-06-20
CH454067A (de) 1968-04-15
US3482051A (en) 1969-12-02
CH444240A (de) 1967-09-30
NL6516300A (de) 1966-06-16
DE1236026B (de) 1967-03-09
BE673896A (de) 1966-06-17
DE1232213B (de) 1967-01-12
NL6516301A (de) 1966-06-16
AT277329B (de) 1969-12-29
DE1232215B (de) 1967-01-12
BE673760A (de) 1966-06-15
CH454967A (de) 1968-04-30

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