DE960825C - Two diode circuit for obtaining a negative-going video mixture and the black control in television equipment for negative modulation - Google Patents

Two diode circuit for obtaining a negative-going video mixture and the black control in television equipment for negative modulation

Info

Publication number
DE960825C
DE960825C DE1952K0013689 DEK0013689A DE960825C DE 960825 C DE960825 C DE 960825C DE 1952K0013689 DE1952K0013689 DE 1952K0013689 DE K0013689 A DEK0013689 A DE K0013689A DE 960825 C DE960825 C DE 960825C
Authority
DE
Grant status
Grant
Patent type
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
DE1952K0013689
Other languages
German (de)
Inventor
Dr Rer Nat Hans-Werner Paehr
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.)
INTERESSENGEMEINSCHAFT fur RUNDFUNKSCHUTZRECHTE GmbH (IGR)
RUNDFUNKSCHUTZRECHTE EV
Original Assignee
INTERESSENGEMEINSCHAFT FUER RUNDFUNKSCHUTZRECHTE G.M.B.H. (IGR)
RUNDFUNKSCHUTZRECHTE EV
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
Grant date

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/14Picture signal circuitry for video frequency region
    • H04N5/16Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level
    • H04N5/165Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level to maintain the black level constant
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/44Receiver circuitry
    • H04N5/52Automatic gain control
    • H04N5/53Keyed automatic gain control
DE1952K0013689 1952-03-29 1952-03-29 Two diode circuit for obtaining a negative-going video mixture and the black control in television equipment for negative modulation Expired DE960825C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1952K0013689 DE960825C (en) 1952-03-29 1952-03-29 Two diode circuit for obtaining a negative-going video mixture and the black control in television equipment for negative modulation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1952K0013689 DE960825C (en) 1952-03-29 1952-03-29 Two diode circuit for obtaining a negative-going video mixture and the black control in television equipment for negative modulation

Publications (1)

Publication Number Publication Date
DE960825C true DE960825C (en) 1957-03-28

Family

ID=7214126

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1952K0013689 Expired DE960825C (en) 1952-03-29 1952-03-29 Two diode circuit for obtaining a negative-going video mixture and the black control in television equipment for negative modulation

Country Status (1)

Country Link
DE (1) DE960825C (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2529428A (en) * 1947-03-01 1950-11-07 Philco Corp Automatic gain control system
FR976427A (en) * 1947-12-13 1951-03-19 Hazeltine Corp Device for stabilization of television signals

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2529428A (en) * 1947-03-01 1950-11-07 Philco Corp Automatic gain control system
FR976427A (en) * 1947-12-13 1951-03-19 Hazeltine Corp Device for stabilization of television signals

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