JPS5693464A - Multifrequency generator - Google Patents

Multifrequency generator

Info

Publication number
JPS5693464A
JPS5693464A JP17392480A JP17392480A JPS5693464A JP S5693464 A JPS5693464 A JP S5693464A JP 17392480 A JP17392480 A JP 17392480A JP 17392480 A JP17392480 A JP 17392480A JP S5693464 A JPS5693464 A JP S5693464A
Authority
JP
Japan
Prior art keywords
multifrequency generator
multifrequency
generator
Prior art date
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
JP17392480A
Other languages
English (en)
Japanese (ja)
Inventor
Kuupaa Deibuisu Pooru
Geen Jiyakuson Reimondo
Jiyon Nahasu Jiyosefu
Haabuei Neruson Deeru
Gan Ongu Deuitsuto
Arubaato Uitsutoman Buraian
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of JPS5693464A publication Critical patent/JPS5693464A/ja
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/50—Devices which can set up and transmit only one digit at a time by generating or selecting currents of predetermined frequencies or combinations of frequencies
    • H04M1/505—Devices which can set up and transmit only one digit at a time by generating or selecting currents of predetermined frequencies or combinations of frequencies signals generated in digital form

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Electronic Switches (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Telephonic Communication Services (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
JP17392480A 1979-12-13 1980-12-11 Multifrequency generator Pending JPS5693464A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/103,403 US4352958A (en) 1979-12-13 1979-12-13 Electronically-switched multifrequency generator with transducer control

Publications (1)

Publication Number Publication Date
JPS5693464A true JPS5693464A (en) 1981-07-29

Family

ID=22294988

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17392480A Pending JPS5693464A (en) 1979-12-13 1980-12-11 Multifrequency generator

Country Status (9)

Country Link
US (1) US4352958A (OSRAM)
JP (1) JPS5693464A (OSRAM)
AU (1) AU536750B2 (OSRAM)
CA (1) CA1159974A (OSRAM)
CH (1) CH651987A5 (OSRAM)
DE (1) DE3046262A1 (OSRAM)
FR (1) FR2471705A1 (OSRAM)
GB (1) GB2066622B (OSRAM)
NL (1) NL8006767A (OSRAM)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4567325A (en) * 1983-12-30 1986-01-28 At&T Technologies Inc. Controller for a coin telephone set
US6931124B1 (en) * 2000-01-13 2005-08-16 Acoustic Technology, Inc. Soft mute circuit
KR101000340B1 (ko) * 2009-07-06 2010-12-13 한국과학기술원 Ｐｍｏｓ 다이오드 모듈, ｎｍｏｓ 다이오드 모듈 및 이를 이용하는 정류회로

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52144904A (en) * 1975-09-29 1977-12-02 Mostek Corp Signal generator

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2027475A1 (OSRAM) * 1968-12-31 1970-09-25 Gabr Saad
NL7402574A (nl) * 1974-02-26 1975-08-28 Philips Nv Schakeling voor een toondruktoetskeuzetelefoon- toestel.
US4132871A (en) * 1977-06-22 1979-01-02 Fairchild Camera And Instrument Corporation Digitally synthesized multi-frequency signal generator
US4196318A (en) * 1978-09-29 1980-04-01 Bell Telephone Laboratories, Incorporated Electronically-switched multifrequency generator for providing tone signaling

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52144904A (en) * 1975-09-29 1977-12-02 Mostek Corp Signal generator

Also Published As

Publication number Publication date
FR2471705A1 (fr) 1981-06-19
AU6502280A (en) 1981-06-18
CA1159974A (en) 1984-01-03
CH651987A5 (de) 1985-10-15
DE3046262C2 (OSRAM) 1987-12-03
GB2066622A (en) 1981-07-08
GB2066622B (en) 1984-03-21
AU536750B2 (en) 1984-05-24
DE3046262A1 (de) 1981-09-17
FR2471705B1 (OSRAM) 1984-01-13
US4352958A (en) 1982-10-05
NL8006767A (nl) 1981-07-16

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