JPS55151750A - Index signal generation in beam index type color television - Google Patents
Index signal generation in beam index type color televisionInfo
- Publication number
- JPS55151750A JPS55151750A JP6001379A JP6001379A JPS55151750A JP S55151750 A JPS55151750 A JP S55151750A JP 6001379 A JP6001379 A JP 6001379A JP 6001379 A JP6001379 A JP 6001379A JP S55151750 A JPS55151750 A JP S55151750A
- Authority
- JP
- Japan
- Prior art keywords
- index
- fluorescent stripes
- frequency
- scanning
- fluorescent
- 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.)
- Granted
Links
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Abstract
PURPOSE: To obtain index signals free of cross modulation by making scanning by modulation of electron beam with a high-frequency signal having a fixed frequency.
CONSTITUTION: On the surface of a fluorescent screen 2 provided with the repeatedly coated tricolor (red, green, and blue) fluorescent stripes 21, 22 and 23 between which the nonluminous substance 24 of graphite, etc., is interposed, the aluminum metal back 25 is evenly deposited and the metal back 25 is further coated in striped form with index fluorescent stripes 3 over the whole scanning face. The index fluorescent stripes 3 are provided at an integral multiple pitch on the basis of one triplet pitch of the tricolor fluorescent stripes 21, 22 and 23. Thus, electron beam from an electron gun is modulated by a high-frequency signal of a sufficiently high frequency for scanning, whereby permitting the generation of frequency component having no phase difference in signals from the index fluores cent strips 3.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6001379A JPS55151750A (en) | 1979-05-15 | 1979-05-15 | Index signal generation in beam index type color television |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6001379A JPS55151750A (en) | 1979-05-15 | 1979-05-15 | Index signal generation in beam index type color television |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55151750A true JPS55151750A (en) | 1980-11-26 |
JPS6232873B2 JPS6232873B2 (en) | 1987-07-17 |
Family
ID=13129750
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6001379A Granted JPS55151750A (en) | 1979-05-15 | 1979-05-15 | Index signal generation in beam index type color television |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55151750A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5372523A (en) * | 1976-12-10 | 1978-06-28 | Matsushita Electric Ind Co Ltd | Color video display electron tube and color video display unit |
-
1979
- 1979-05-15 JP JP6001379A patent/JPS55151750A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5372523A (en) * | 1976-12-10 | 1978-06-28 | Matsushita Electric Ind Co Ltd | Color video display electron tube and color video display unit |
Also Published As
Publication number | Publication date |
---|---|
JPS6232873B2 (en) | 1987-07-17 |
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