FR679605A - Système de contrôle du volume des transmissions - Google Patents

Système de contrôle du volume des transmissions

Info

Publication number
FR679605A
FR679605A FR679605DA FR679605A FR 679605 A FR679605 A FR 679605A FR 679605D A FR679605D A FR 679605DA FR 679605 A FR679605 A FR 679605A
Authority
FR
France
Prior art keywords
control system
volume control
transmission volume
transmission
volume
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
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.)
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 FR679605A publication Critical patent/FR679605A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/04—Control of transmission; Equalising
    • H04B3/06—Control of transmission; Equalising by the transmitted signal
FR679605D 1928-12-17 1929-07-31 Système de contrôle du volume des transmissions Expired FR679605A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US326597A US1811954A (en) 1928-12-17 1928-12-17 Transmission volume control

Publications (1)

Publication Number Publication Date
FR679605A true FR679605A (fr) 1930-04-15

Family

ID=23272900

Family Applications (1)

Application Number Title Priority Date Filing Date
FR679605D Expired FR679605A (fr) 1928-12-17 1929-07-31 Système de contrôle du volume des transmissions

Country Status (4)

Country Link
US (1) US1811954A (fr)
DE (1) DE577865C (fr)
FR (1) FR679605A (fr)
GB (1) GB334869A (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2666098A (en) * 1945-12-13 1954-01-12 John L Leonard Vacuum tube amplifier for measuring signals having a large variation in level
US2791743A (en) * 1949-10-11 1957-05-07 Nederlanden Staat Automatic volume control device
NL80093C (fr) * 1950-06-16
NL155159B (nl) * 1950-08-02 Philips Nv Schakelinrichting voor het onder bestuur van een stuurpuls verbinden van een bron van telecommunicatiesignalen met een belasting voor telecommunicatiesignalen.
US2813156A (en) * 1953-11-30 1957-11-12 Hoffman Electronics Corp Variable gain amplifier
US2856589A (en) * 1954-04-20 1958-10-14 Rca Corp Light-controlled waveguide attenuator
DE3226279A1 (de) * 1982-07-14 1984-01-19 Neumann Elektronik GmbH, 4330 Mülheim Anordnung zum ausgleich unterschiedlichen daempfungsverhaltens von fernmeldeleitungen

Also Published As

Publication number Publication date
US1811954A (en) 1931-06-30
DE577865C (de) 1933-06-06
GB334869A (en) 1930-09-10

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