GB627766A - Improved carrier wave telephone system - Google Patents

Improved carrier wave telephone system

Info

Publication number
GB627766A
GB627766A GB6242/47A GB624247A GB627766A GB 627766 A GB627766 A GB 627766A GB 6242/47 A GB6242/47 A GB 6242/47A GB 624247 A GB624247 A GB 624247A GB 627766 A GB627766 A GB 627766A
Authority
GB
United Kingdom
Prior art keywords
carrier
central office
subscriber
relay
operates
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.)
Expired
Application number
GB6242/47A
Other languages
English (en)
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 GB627766A publication Critical patent/GB627766A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C10/00—Adjustable resistors
    • H01C10/16—Adjustable resistors including plural resistive elements
    • H01C10/20—Contact structure or movable resistive elements being ganged
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5404—Methods of transmitting or receiving signals via power distribution lines
    • H04B2203/5416—Methods of transmitting or receiving signals via power distribution lines by adding signals to the wave form of the power source
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5429—Applications for powerline communications
    • H04B2203/5437—Wired telephone

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Telephonic Communication Services (AREA)
GB6242/47A 1946-03-09 1947-03-05 Improved carrier wave telephone system Expired GB627766A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US653254A US2481915A (en) 1946-03-09 1946-03-09 Power line carrier wave communication system

Publications (1)

Publication Number Publication Date
GB627766A true GB627766A (en) 1949-08-16

Family

ID=24620096

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6242/47A Expired GB627766A (en) 1946-03-09 1947-03-05 Improved carrier wave telephone system

Country Status (4)

Country Link
US (1) US2481915A (enrdf_load_stackoverflow)
FR (1) FR942635A (enrdf_load_stackoverflow)
GB (1) GB627766A (enrdf_load_stackoverflow)
NL (1) NL79209C (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2626319A (en) * 1949-01-14 1953-01-20 Westinghouse Electric Corp Multistation duplex system
US2744958A (en) * 1951-07-30 1956-05-08 Ellsworth A Hosmer Carrier telephone system
US3964048A (en) * 1974-01-28 1976-06-15 General Public Utilities Corporation Communicating over power network within a building or other user location
US3962547A (en) * 1975-05-27 1976-06-08 Westinghouse Electric Corporation Repeater coupler for power line communication systems
US5090052A (en) * 1989-05-18 1992-02-18 Tandy Corporation Telephone system with multiple extension telephones

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1705891A (en) * 1927-02-28 1929-03-19 Bell Telephone Labor Inc Power line signaling
US1773613A (en) * 1927-05-19 1930-08-19 Gen Electric High-frequency communication system
US2292222A (en) * 1939-12-28 1942-08-04 Elmer G Van Name Two-way radio communication system
US2289048A (en) * 1941-06-19 1942-07-07 Bell Telephone Labor Inc Power line carrier frequency telephone system
US2430471A (en) * 1946-05-31 1947-11-11 Bell Telephone Labor Inc Carrier current signaling system

Also Published As

Publication number Publication date
FR942635A (fr) 1949-02-14
US2481915A (en) 1949-09-13
NL79209C (enrdf_load_stackoverflow)

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