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HK30288A - Electronic telephone on a chip - Google Patents

Electronic telephone on a chip

Info

Publication number
HK30288A
HK30288A HK30288A HK30288A HK30288A HK 30288 A HK30288 A HK 30288A HK 30288 A HK30288 A HK 30288A HK 30288 A HK30288 A HK 30288A HK 30288 A HK30288 A HK 30288A
Authority
HK
Hong Kong
Prior art keywords
chip
electronic telephone
telephone
electronic
Prior art date
Application number
HK30288A
Inventor
Jerry Lee Norris
Original Assignee
Texas Instruments 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 Texas Instruments Inc filed Critical Texas Instruments Inc
Publication of HK30288A publication Critical patent/HK30288A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/738—Interface circuits for coupling substations to external telephone lines

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Electronic Switches (AREA)
  • Telephone Function (AREA)
HK30288A 1978-11-20 1988-04-28 Electronic telephone on a chip HK30288A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US96254878A 1978-11-20 1978-11-20

Publications (1)

Publication Number Publication Date
HK30288A true HK30288A (en) 1988-05-06

Family

ID=25506049

Family Applications (1)

Application Number Title Priority Date Filing Date
HK30288A HK30288A (en) 1978-11-20 1988-04-28 Electronic telephone on a chip

Country Status (4)

Country Link
JP (1) JPS5574254A (en)
DE (1) DE2946815A1 (en)
GB (1) GB2037128B (en)
HK (1) HK30288A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8103419A (en) * 1981-04-01 1982-11-01 Philips Nv LINE TEST CIRCUIT FOR A SUBSCRIBER PHONE.
FR2532133A1 (en) * 1982-08-17 1984-02-24 Labo Cent Telecommunicat CIRCUIT OF RINGER FOR TELEPHONE STATION, REALIZABLE IN INTEGRATED CIRCUIT
DE3370427D1 (en) * 1983-08-18 1987-04-23 Itt Telephone ringing circuit realisable as an integrated circuit
CH668521A5 (en) * 1983-10-18 1988-12-30 Siemens Ag Albis CIRCUIT ARRANGEMENT FOR A TELEPHONE.
DE3504243A1 (en) * 1985-02-08 1986-08-14 Philips Patentverwaltung Gmbh, 2000 Hamburg METHOD AND CIRCUIT ARRANGEMENT FOR GENERATING AN ACOUSTIC CALL SIGNAL IN SUBSCRIBER TERMINALS OF TELECOMMUNICATION SYSTEMS

Also Published As

Publication number Publication date
GB2037128B (en) 1983-04-13
GB2037128A (en) 1980-07-02
DE2946815A1 (en) 1980-05-29
JPS5574254A (en) 1980-06-04

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Legal Events

Date Code Title Description
PE Patent expired