JPS5488024A - Driving system for pickup tube - Google Patents
Driving system for pickup tubeInfo
- Publication number
- JPS5488024A JPS5488024A JP15680377A JP15680377A JPS5488024A JP S5488024 A JPS5488024 A JP S5488024A JP 15680377 A JP15680377 A JP 15680377A JP 15680377 A JP15680377 A JP 15680377A JP S5488024 A JPS5488024 A JP S5488024A
- Authority
- JP
- Japan
- Prior art keywords
- speed scanning
- low
- speed
- voltage source
- time
- 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
Abstract
PURPOSE: To enhance the quality for both pictures at the NS and SS time by securing the different target voltage for the pickup tube at the reading time of the NS (general high-speed scanning) signal and at the SS (lower-speed scanning than NS).
CONSTITUTION: Pickup tube 1 containing photoelectric element RP and picture element CP carries out both the high-speed and low-speed scanning via change- over switch 2. Voltage source ETNS is the target voltage source which is applied between the target and the cathode at the general high-speed scanning time; while voltage source ETSS is the target voltage source which is applied between the target and the cathode at the low-speed scanning time respectively. And ETNS> ETSS>O is satisfied. Thus, the target voltage can be made different between the high-speed and low-speed scanning via switch 2, with no increment of the dark current at the low-speed scanning time. In this way, both the S/N and the picture quality can be enhanced for the output signal at the low-speed scanning time.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15680377A JPS5488024A (en) | 1977-12-26 | 1977-12-26 | Driving system for pickup tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15680377A JPS5488024A (en) | 1977-12-26 | 1977-12-26 | Driving system for pickup tube |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5488024A true JPS5488024A (en) | 1979-07-12 |
Family
ID=15635655
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15680377A Pending JPS5488024A (en) | 1977-12-26 | 1977-12-26 | Driving system for pickup tube |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5488024A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02195781A (en) * | 1989-01-25 | 1990-08-02 | Hitachi Medical Corp | Image input device |
-
1977
- 1977-12-26 JP JP15680377A patent/JPS5488024A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02195781A (en) * | 1989-01-25 | 1990-08-02 | Hitachi Medical Corp | Image input device |
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