FR742835A - - Google Patents

Info

Publication number
FR742835A
FR742835A FR742835DA FR742835A FR 742835 A FR742835 A FR 742835A FR 742835D A FR742835D A FR 742835DA FR 742835 A FR742835 A FR 742835A
Authority
FR
France
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)
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.)
Publication date
Application granted granted Critical
Publication of FR742835A publication Critical patent/FR742835A/fr
Priority claimed from US99023A external-priority patent/US2274709A/en
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
    • H04N5/165—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)
  • Transforming Light Signals Into Electric Signals (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Lasers (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Solid State Image Pick-Up Elements (AREA)
  • Measurement Of Radiation (AREA)
  • Picture Signal Circuits (AREA)
FR742835D 1931-09-16 Expired FR742835A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US563016A US2274686A (en) 1931-09-16 1931-09-16 Electro-optical system
US99023A US2274709A (en) 1936-09-02 1936-09-02 Electro-optical image production

Publications (1)

Publication Number Publication Date
FR742835A true FR742835A (en) 1933-03-17

Family

ID=26795407

Family Applications (2)

Application Number Title Priority Date Filing Date
FR742835D Expired FR742835A (en) 1931-09-16
FR48747D Expired FR48747E (en) 1931-09-16 1937-08-28 Electro-optical imaging systems with device for reducing image distortion

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR48747D Expired FR48747E (en) 1931-09-16 1937-08-28 Electro-optical imaging systems with device for reducing image distortion

Country Status (4)

Country Link
US (1) US2274686A (en)
DE (1) DE628663C (en)
FR (2) FR48747E (en)
GB (2) GB406672A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE882416C (en) * 1934-09-18 1953-07-09 Emi Ltd Circuit arrangement for reintroducing the direct current component into electrical signals
DE919236C (en) * 1933-03-01 1954-10-18 Rca Corp Circuit arrangement for re-introducing the average brightness in Braun television receiving tubes

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE401713A (en) * 1933-02-28
BE402568A (en) * 1933-04-13
DE753789C (en) * 1935-03-09 1952-11-17 Siemens & Halske A G Circuit arrangement for influencing the settling and decay times of an electrical circuit
DE741785C (en) * 1937-11-29 1943-11-17 Fernseh Gmbh Method for the transmission of television pictures whose brightness range is less than the available modulation range
US2476349A (en) * 1944-09-04 1949-07-19 Hartford Nat Bank & Trust Comp Phase or frequency modulation system
US2705740A (en) * 1949-12-14 1955-04-05 Zenith Radio Corp Subscription type signalling system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE919236C (en) * 1933-03-01 1954-10-18 Rca Corp Circuit arrangement for re-introducing the average brightness in Braun television receiving tubes
DE882416C (en) * 1934-09-18 1953-07-09 Emi Ltd Circuit arrangement for reintroducing the direct current component into electrical signals

Also Published As

Publication number Publication date
FR48747E (en) 1938-06-21
GB406672A (en) 1934-02-28
DE628663C (en) 1936-04-08
GB483451A (en) 1938-04-20
US2274686A (en) 1942-03-03

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