JPS57162886A - Automatic beam quantity control circuit - Google Patents

Automatic beam quantity control circuit

Info

Publication number
JPS57162886A
JPS57162886A JP56048716A JP4871681A JPS57162886A JP S57162886 A JPS57162886 A JP S57162886A JP 56048716 A JP56048716 A JP 56048716A JP 4871681 A JP4871681 A JP 4871681A JP S57162886 A JPS57162886 A JP S57162886A
Authority
JP
Japan
Prior art keywords
control circuit
current
quantity control
voltage corresponding
automatic beam
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.)
Pending
Application number
JP56048716A
Other languages
Japanese (ja)
Inventor
Kunio Imai
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.)
Hitachi Denshi KK
Original Assignee
Hitachi Denshi KK
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 Hitachi Denshi KK filed Critical Hitachi Denshi KK
Priority to JP56048716A priority Critical patent/JPS57162886A/en
Publication of JPS57162886A publication Critical patent/JPS57162886A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/40—Circuit details for pick-up tubes
    • H04N23/41—Beam current control

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To control a beam current to an optimum value, by supplying the difference of a voltage corresponding to a signal current and a cathode current to a grid of an image pickup tube. CONSTITUTION:A target 101 of an image pickup tube 1 is grounded via an equivalent resistor 2 generating a voltage corresponding to a signal current and connected to a differential amplifier 3 via an attenuator 4. A cathode 103 is grounded via a resistor 5 generating a voltage corresponding to a cathode current and connected to an amplifier 3. The output terminal of the amplifier 3 is connected to a grid 102.
JP56048716A 1981-03-31 1981-03-31 Automatic beam quantity control circuit Pending JPS57162886A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56048716A JPS57162886A (en) 1981-03-31 1981-03-31 Automatic beam quantity control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56048716A JPS57162886A (en) 1981-03-31 1981-03-31 Automatic beam quantity control circuit

Publications (1)

Publication Number Publication Date
JPS57162886A true JPS57162886A (en) 1982-10-06

Family

ID=12811019

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56048716A Pending JPS57162886A (en) 1981-03-31 1981-03-31 Automatic beam quantity control circuit

Country Status (1)

Country Link
JP (1) JPS57162886A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986001961A1 (en) * 1984-09-14 1986-03-27 Sony Corporation Device for controlling beam current of a tv camera device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986001961A1 (en) * 1984-09-14 1986-03-27 Sony Corporation Device for controlling beam current of a tv camera device

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