FR847974A - Perfectionnements aux systèmes transmetteurs de signaux de télévision ou autres - Google Patents

Perfectionnements aux systèmes transmetteurs de signaux de télévision ou autres

Info

Publication number
FR847974A
FR847974A FR847974DA FR847974A FR 847974 A FR847974 A FR 847974A FR 847974D A FR847974D A FR 847974DA FR 847974 A FR847974 A FR 847974A
Authority
FR
France
Prior art keywords
television
signals
transmitting systems
transmitting
systems
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 FR847974A publication Critical patent/FR847974A/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
    • 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
    • H04N5/165—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level to maintain the black level constant

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
FR847974D 1937-12-24 1938-12-23 Perfectionnements aux systèmes transmetteurs de signaux de télévision ou autres Expired FR847974A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB35791/37A GB508377A (en) 1937-12-24 1937-12-24 Improvements in or relating to television or other signal transmission systems

Publications (1)

Publication Number Publication Date
FR847974A true FR847974A (fr) 1939-10-19

Family

ID=10381590

Family Applications (1)

Application Number Title Priority Date Filing Date
FR847974D Expired FR847974A (fr) 1937-12-24 1938-12-23 Perfectionnements aux systèmes transmetteurs de signaux de télévision ou autres

Country Status (4)

Country Link
US (1) US2244240A (fr)
DE (1) DE888563C (fr)
FR (1) FR847974A (fr)
GB (2) GB508377A (fr)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2445040A (en) * 1943-05-13 1948-07-13 Rca Corp Dark spot corrector
IT454467A (fr) * 1944-12-26
US2543037A (en) * 1946-01-07 1951-02-27 Farnsworth Res Corp Television receiver
US2548436A (en) * 1946-01-25 1951-04-10 Hazeltine Corp Television receiver background control circuit
US2550178A (en) * 1946-11-21 1951-04-24 Rca Corp Direct current reinsertion circuit for television systems
US2525106A (en) * 1946-11-21 1950-10-10 Rca Corp Electronic keyer for direct current restoration
US2554317A (en) * 1946-12-18 1951-05-22 Rca Corp Clamp circuit
US2546338A (en) * 1947-05-13 1951-03-27 Du Mont Allen B Lab Inc Circuit for minimizing transients during switching between two video channels
US2539454A (en) * 1947-10-02 1951-01-30 Farnsworth Television & Radio Picture signal mixer circuit
BE486285A (fr) * 1947-12-13
GB688200A (en) * 1948-07-15 1953-03-04 Emi Ltd Improvements relating to television transmitting systems
AT29106B (de) * 1948-08-10 1907-07-10 Alois Dichtl Verfahren zur Herstellung eines Vertilgungsmittels für Ratten, Mäuse u. dgl.
NL150569B (nl) * 1948-12-18 Bestobell Establishment Condenspot met door een bimetaal bestuurde klep.
US2609443A (en) * 1948-12-29 1952-09-02 Rca Corp Keyed automatic gain control
GB666289A (en) * 1949-05-19 1952-02-06 Emi Ltd Improvements in or relating to television transmission systems
NL82256C (fr) * 1950-11-09
NL174245B (nl) * 1951-12-05 Saint Gobain Inrichting voor het harden van vooraf gebogen glasplaten.
US2828356A (en) * 1951-12-07 1958-03-25 Rca Corp Clamped synchronizing signal separator
GB777803A (en) * 1953-01-15 1957-06-26 Pye Ltd Improvements in or relating to television receivers
GB753424A (en) * 1953-09-08 1956-07-25 Standard Telephones Cables Ltd An arrangement for suppressing the direct current component in television signals
US3259760A (en) * 1963-11-07 1966-07-05 Massachusetts Inst Technology Peak holding circuit
US3492594A (en) * 1966-07-11 1970-01-27 Cohu Electronics Inc D.c. restorer amplifier circuit

Also Published As

Publication number Publication date
DE888563C (de) 1953-09-03
US2244240A (en) 1941-06-03
GB508377A (en) 1939-06-26
GB512109A (en) 1939-08-29

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