JPS5640379A - Beam index type color television receiver - Google Patents
Beam index type color television receiverInfo
- Publication number
- JPS5640379A JPS5640379A JP11693679A JP11693679A JPS5640379A JP S5640379 A JPS5640379 A JP S5640379A JP 11693679 A JP11693679 A JP 11693679A JP 11693679 A JP11693679 A JP 11693679A JP S5640379 A JPS5640379 A JP S5640379A
- Authority
- JP
- Japan
- Prior art keywords
- output
- television receiver
- type color
- color television
- beam index
- 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
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/16—Picture reproducers using cathode ray tubes
- H04N9/22—Picture reproducers using cathode ray tubes using the same beam for more than one primary colour information
- H04N9/24—Picture reproducers using cathode ray tubes using the same beam for more than one primary colour information using means, integral with, or external to, the tube, for producing signal indicating instantaneous beam position
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Abstract
PURPOSE:To suppress generation of secondary electrons, by breaking the input of the video amplifier during existence of an over-scan part by the output of the monostable multivibrator which is triggerred by the trailing edge of the blanking signal. CONSTITUTION:The output signal of photo detector 21 is caused to pass through BPF22, phase shifter 23, and pulse shaping circuit 44 to obtain index pulse P1. When index pulse P1 cannot be obtained during existence of an over-scan part, the output of monostable multivibrator 46 which is triggerred by the trailing edge of blanking signal Bc becomes O automatically to turn off switch 27. Since FF47 is reset still, switch 26 is turned off. Consequently, the electron beam quantity is small, and generation of secondary electrons is suppressed to a minimum.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11693679A JPS5640379A (en) | 1979-09-12 | 1979-09-12 | Beam index type color television receiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11693679A JPS5640379A (en) | 1979-09-12 | 1979-09-12 | Beam index type color television receiver |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5640379A true JPS5640379A (en) | 1981-04-16 |
Family
ID=14699362
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11693679A Pending JPS5640379A (en) | 1979-09-12 | 1979-09-12 | Beam index type color television receiver |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5640379A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5389318A (en) * | 1977-01-17 | 1978-08-05 | Sanyo Electric Co Ltd | Index type color television receiver |
JPS54108524A (en) * | 1978-02-14 | 1979-08-25 | Toshiba Corp | Color synchronizer of beam index type picture receiver |
-
1979
- 1979-09-12 JP JP11693679A patent/JPS5640379A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5389318A (en) * | 1977-01-17 | 1978-08-05 | Sanyo Electric Co Ltd | Index type color television receiver |
JPS54108524A (en) * | 1978-02-14 | 1979-08-25 | Toshiba Corp | Color synchronizer of beam index type picture receiver |
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