FR855462A - Perfectionnements à la transmission des signaux électriques - Google Patents

Perfectionnements à la transmission des signaux électriques

Info

Publication number
FR855462A
FR855462A FR855462DA FR855462A FR 855462 A FR855462 A FR 855462A FR 855462D A FR855462D A FR 855462DA FR 855462 A FR855462 A FR 855462A
Authority
FR
France
Prior art keywords
transmission
electrical signals
signals
electrical
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries Ltd
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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Application granted granted Critical
Publication of FR855462A publication Critical patent/FR855462A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/16—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level
    • H04N5/18—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level by means of "clamp" circuit operated by switching circuit
    • H04N5/185—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level by means of "clamp" circuit operated by switching circuit for the black level
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/04—Modifications of control circuit to reduce distortion caused by control

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
  • Networks Using Active Elements (AREA)
FR855462D 1938-05-30 1939-05-30 Perfectionnements à la transmission des signaux électriques Expired FR855462A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB16084/38A GB515364A (en) 1938-05-30 1938-05-30 Improvements in or relating to the transmission of electrical signals

Publications (1)

Publication Number Publication Date
FR855462A true FR855462A (fr) 1940-05-11

Family

ID=10070884

Family Applications (1)

Application Number Title Priority Date Filing Date
FR855462D Expired FR855462A (fr) 1938-05-30 1939-05-30 Perfectionnements à la transmission des signaux électriques

Country Status (4)

Country Link
US (1) US2303909A (fr)
FR (1) FR855462A (fr)
GB (1) GB515364A (fr)
NL (1) NL69792C (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2548436A (en) * 1946-01-25 1951-04-10 Hazeltine Corp Television receiver background control circuit
US2525106A (en) * 1946-11-21 1950-10-10 Rca Corp Electronic keyer for direct current restoration
US2550178A (en) * 1946-11-21 1951-04-24 Rca Corp Direct current reinsertion circuit for television systems
US2529428A (en) * 1947-03-01 1950-11-07 Philco Corp Automatic gain control system
GB688200A (en) * 1948-07-15 1953-03-04 Emi Ltd Improvements relating to television transmitting systems
US2586193A (en) * 1948-08-19 1952-02-19 Rca Corp Keyed automatic gain control system
US2654799A (en) * 1948-08-26 1953-10-06 Rca Corp Keyed automatic gain control with keying pulse limiter
NL150569B (nl) * 1948-12-18 Bestobell Establishment Condenspot met door een bimetaal bestuurde klep.
US2589927A (en) * 1949-02-25 1952-03-18 Gen Precision Lab Inc Keyed automatic gain control and sync separator
US2559038A (en) * 1949-08-01 1951-07-03 Avco Mfg Corp Line pulse keyed automatic gain control circuit with control voltage delay

Also Published As

Publication number Publication date
GB515364A (en) 1939-12-04
NL69792C (fr)
US2303909A (en) 1942-12-01

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