[go: up one dir, main page]

FR866862A - Electrical communication system - Google Patents

Electrical communication system

Info

Publication number
FR866862A
FR866862A FR866862DA FR866862A FR 866862 A FR866862 A FR 866862A FR 866862D A FR866862D A FR 866862DA FR 866862 A FR866862 A FR 866862A
Authority
FR
France
Prior art keywords
communication system
electrical communication
electrical
communication
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
Other languages
French (fr)
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.)
Electrical Research Products Inc
Original Assignee
Electrical Research Products 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 Electrical Research Products Inc filed Critical Electrical Research Products Inc
Application granted granted Critical
Publication of FR866862A publication Critical patent/FR866862A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/22—Automatic control in amplifiers having discharge tubes
    • 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
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/08—Amplitude regulation arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Relay Systems (AREA)
FR866862D 1939-07-08 1940-08-24 Electrical communication system Expired FR866862A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US283369A US2207711A (en) 1939-07-08 1939-07-08 Convoy current timing arrangement

Publications (1)

Publication Number Publication Date
FR866862A true FR866862A (en) 1941-09-15

Family

ID=23085714

Family Applications (1)

Application Number Title Priority Date Filing Date
FR866862D Expired FR866862A (en) 1939-07-08 1940-08-24 Electrical communication system

Country Status (3)

Country Link
US (1) US2207711A (en)
FR (1) FR866862A (en)
NL (1) NL62781C (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3213200A (en) * 1960-02-25 1965-10-19 Joseph H Vogelman Multiple-service communication system
US3200201A (en) * 1961-12-29 1965-08-10 Bell Telephone Labor Inc Interpolation signaling
US3310631A (en) * 1963-06-03 1967-03-21 Itt Communication system for the selective transmission of speech and data
US3303285A (en) * 1963-05-29 1967-02-07 Itt Communication system for the selective transmission of speech and data
US3304372A (en) * 1963-06-28 1967-02-14 Ibm Voice-data multiplexing system for transmitting data during pauses in the voice signals
US3311704A (en) * 1963-06-28 1967-03-28 Ibm Voice-data multiplexing system for transmitting data during pauses in the voice signals

Also Published As

Publication number Publication date
NL62781C (en)
US2207711A (en) 1940-07-16

Similar Documents

Publication Publication Date Title
FR853355A (en) Multiple phone system
CH227860A (en) Insulated electric cable.
BE444713A (en) Electrical signaling system
FR856152A (en) Telephone system
FR858001A (en) Electrical communication system
FR866862A (en) Electrical communication system
FR951376A (en) Telephone system
CH232790A (en) Electric telecommunication system.
FR853308A (en) Multiple phone system
FR937957A (en) Radio-printer system
CH237887A (en) Telecommunications installation.
CH219021A (en) Electric telecommunication system.
FR841940A (en) Electrical communication systems
FR848214A (en) Electrical communication systems
FR865888A (en) Multiple telegraph system
FR837587A (en) Secret telecommunications system
DK59300C (en) Electrical Signaling System.
FR860550A (en) Electrical connection device
FR856679A (en) Electrical communications system
FR886911A (en) Electric transmission system
FR874482A (en) Electrical coupling system
FR865515A (en) Electrical communication cables
FR869497A (en) Electrical signaling system
FR856889A (en) Telecommunication system
FR853572A (en) Telecommunication system