JPS5632882A - Cathode-ray tube unit for picture display - Google Patents

Cathode-ray tube unit for picture display

Info

Publication number
JPS5632882A
JPS5632882A JP10835779A JP10835779A JPS5632882A JP S5632882 A JPS5632882 A JP S5632882A JP 10835779 A JP10835779 A JP 10835779A JP 10835779 A JP10835779 A JP 10835779A JP S5632882 A JPS5632882 A JP S5632882A
Authority
JP
Japan
Prior art keywords
cathode
ray tube
negative feedback
amount
picture display
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
JP10835779A
Other languages
Japanese (ja)
Inventor
Eizo Okubo
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP10835779A priority Critical patent/JPS5632882A/en
Publication of JPS5632882A publication Critical patent/JPS5632882A/en
Pending 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
    • H04N5/141—Beam current control means

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Receiver Circuits (AREA)

Abstract

PURPOSE:To suppress unevenness in display even as to large-screen display by compensating fluctuations of cathode-ray tube characteristics by detecting the amount of a cathode-ray tube beam and then by providing negative feedback to make the amount constant. CONSTITUTION:Resistor 8, diode 9, transistor 11, and variable resistor 7 constitute a negative feedback circuit. This negative feedback circuit operates to make constant a maximum value of a cathode current, i.e. beam current flowing through resistance 8 in the switch-on period of transistor 2. Therefore, even if the emission effect of cathode-ray tube 1 changes, the amount of the beam in the emission period can be stabilized to an initial value determined by resistance 7.
JP10835779A 1979-08-24 1979-08-24 Cathode-ray tube unit for picture display Pending JPS5632882A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10835779A JPS5632882A (en) 1979-08-24 1979-08-24 Cathode-ray tube unit for picture display

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10835779A JPS5632882A (en) 1979-08-24 1979-08-24 Cathode-ray tube unit for picture display

Publications (1)

Publication Number Publication Date
JPS5632882A true JPS5632882A (en) 1981-04-02

Family

ID=14482667

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10835779A Pending JPS5632882A (en) 1979-08-24 1979-08-24 Cathode-ray tube unit for picture display

Country Status (1)

Country Link
JP (1) JPS5632882A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60203127A (en) * 1984-03-28 1985-10-14 株式会社シマノ Fixing of reel seat to fishing rod

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60203127A (en) * 1984-03-28 1985-10-14 株式会社シマノ Fixing of reel seat to fishing rod
JPH0515409B2 (en) * 1984-03-28 1993-03-01 Shimano Kk

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