NL7205132A - - Google Patents

Info

Publication number
NL7205132A
NL7205132A NL7205132A NL7205132A NL7205132A NL 7205132 A NL7205132 A NL 7205132A NL 7205132 A NL7205132 A NL 7205132A NL 7205132 A NL7205132 A NL 7205132A NL 7205132 A NL7205132 A NL 7205132A
Authority
NL
Netherlands
Application number
NL7205132A
Other versions
NL154386B (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 NL7205132A priority Critical patent/NL154386B/en
Priority to DE19732318172 priority patent/DE2318172C3/en
Priority to SE7305320A priority patent/SE380701B/en
Priority to FR7313951A priority patent/FR2180901B1/fr
Priority to IT4949273A priority patent/IT980245B/en
Publication of NL7205132A publication Critical patent/NL7205132A/xx
Publication of NL154386B publication Critical patent/NL154386B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/12—Arrangements providing for calling or supervisory signals
    • 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
    • H04Q1/457—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals
    • H04Q1/4575—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals which are transmitted in digital form

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
NL7205132A 1972-04-17 1972-04-17 SIGNALING SYSTEM. NL154386B (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NL7205132A NL154386B (en) 1972-04-17 1972-04-17 SIGNALING SYSTEM.
DE19732318172 DE2318172C3 (en) 1972-04-17 1973-04-11 Method for generating digitized code characters when dialing multiple frequency codes in telecommunications, in particular telephone systems
SE7305320A SE380701B (en) 1972-04-17 1973-04-13 SYSTEM FOR DIGITALIZING AN MFC SIGNAL.
FR7313951A FR2180901B1 (en) 1972-04-17 1973-04-17
IT4949273A IT980245B (en) 1972-04-17 1973-04-17 TELEPHONE SIGNALING SYSTEM

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7205132A NL154386B (en) 1972-04-17 1972-04-17 SIGNALING SYSTEM.

Publications (2)

Publication Number Publication Date
NL7205132A true NL7205132A (en) 1973-10-19
NL154386B NL154386B (en) 1977-08-15

Family

ID=19815859

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7205132A NL154386B (en) 1972-04-17 1972-04-17 SIGNALING SYSTEM.

Country Status (5)

Country Link
DE (1) DE2318172C3 (en)
FR (1) FR2180901B1 (en)
IT (1) IT980245B (en)
NL (1) NL154386B (en)
SE (1) SE380701B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL177169B (en) * 1978-09-08 1985-03-01 Nederlanden Staat APPARATUS FOR DETERMINING THE PRESENCE OF ONE OR MORE OF A NUMBER OF FREQUENCIES IN PULSE CODE MODULATED SIGNALS.
AT374325B (en) * 1980-04-18 1984-04-10 Siemens Ag Oesterreich DEVICE FOR GENERATING TWO ELECTRIC VIBRATIONS OF DIFFERENT FREQUENCIES, IN PARTICULAR FOR GENERATING CODE-CHARACTERS FOR MULTI-FREQUENCY CODE SELECTION
US4620294A (en) * 1983-09-09 1986-10-28 Cts Corporation Digital signal processor modem
US4599583A (en) * 1983-11-19 1986-07-08 Fujitsu Limited Mixed dual frequency generating system
DE4408323C2 (en) * 1994-03-11 1999-03-11 Siemens Ag Method for generating a digital sinusoidal signal with a predetermined sampling rate and circuit arrangement for carrying out the method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL267387A (en) * 1960-08-23

Also Published As

Publication number Publication date
DE2318172B2 (en) 1975-02-20
FR2180901B1 (en) 1979-03-30
DE2318172A1 (en) 1973-10-25
NL154386B (en) 1977-08-15
DE2318172C3 (en) 1975-09-25
SE380701B (en) 1975-11-10
IT980245B (en) 1974-09-30
FR2180901A1 (en) 1973-11-30

Similar Documents

Publication Publication Date Title
JPS48103140A (en)
FR2180901B1 (en)
JPS4910510U (en)
JPS5146519B2 (en)
JPS4928070A (en)
JPS4936717U (en)
DE2213964C3 (en)
JPS539878Y2 (en)
JPS528984B2 (en)
JPS4929195A (en)
JPS4942625A (en)
JPS4910637U (en)
JPS48108400U (en)
JPS4963344U (en)
JPS4946092A (en)
JPS5016928Y2 (en)
JPS5550774Y2 (en)
JPS5123569B2 (en)
JPS4949833U (en)
JPS49107309U (en)
FR2204764A1 (en)
JPS4927019U (en)
JPS4913290U (en)
CH578538A5 (en)
DD101924A1 (en)

Legal Events

Date Code Title Description
V1 Lapsed because of non-payment of the annual fee
NL80 Abbreviated name of patent owner mentioned of already nullified patent

Owner name: P T T