NL70278C - - Google Patents

Info

Publication number
NL70278C
NL70278C NL70278DA NL70278C NL 70278 C NL70278 C NL 70278C NL 70278D A NL70278D A NL 70278DA NL 70278 C NL70278 C NL 70278C
Authority
NL
Netherlands
Application number
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 of NL70278C publication Critical patent/NL70278C/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/57—Control of contrast or brightness
    • 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)
  • Television Receiver Circuits (AREA)
NL70278D 1939-05-31 NL70278C (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US276594A US2269540A (en) 1939-05-31 1939-05-31 Television signal-translating system

Publications (1)

Publication Number Publication Date
NL70278C true NL70278C (xx)

Family

ID=23057291

Family Applications (1)

Application Number Title Priority Date Filing Date
NL70278D NL70278C (xx) 1939-05-31

Country Status (3)

Country Link
US (1) US2269540A (xx)
FR (1) FR864885A (xx)
NL (1) NL70278C (xx)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2550960A (en) * 1947-05-21 1951-05-01 Hazeltine Research Inc Television receiver contrast and brightness control
NL80731C (xx) * 1952-02-21
US2910550A (en) * 1956-04-27 1959-10-27 Bell Telephone Labor Inc Wide-range automatic gain control
US2983787A (en) * 1958-10-24 1961-05-09 Gen Electric Automatic gain control system for a television receiver

Also Published As

Publication number Publication date
FR864885A (fr) 1941-05-07
US2269540A (en) 1942-01-13

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