JPS5632882A - Cathode-ray tube unit for picture display - Google Patents
Cathode-ray tube unit for picture displayInfo
- 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
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.
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)
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 |
-
1979
- 1979-08-24 JP JP10835779A patent/JPS5632882A/en active Pending
Cited By (2)
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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