JPS5221720A - Omnidirectional observing devcice - Google Patents
Omnidirectional observing devciceInfo
- Publication number
- JPS5221720A JPS5221720A JP9796575A JP9796575A JPS5221720A JP S5221720 A JPS5221720 A JP S5221720A JP 9796575 A JP9796575 A JP 9796575A JP 9796575 A JP9796575 A JP 9796575A JP S5221720 A JPS5221720 A JP S5221720A
- Authority
- JP
- Japan
- Prior art keywords
- devcice
- omnidirectional
- observing
- scanning signal
- half frequency
- 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
Landscapes
- Closed-Circuit Television Systems (AREA)
Abstract
PURPOSE: Close observation all over the inside of tube made possible by circularly scanning a picture formed by a moving convex mirror along tube axis and by displaying it using horizontal scanning signal having a half frequency of circular scanning signal having a half frequency of circular scanning signal.
COPYRIGHT: (C)1977,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9796575A JPS5221720A (en) | 1975-08-11 | 1975-08-11 | Omnidirectional observing devcice |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9796575A JPS5221720A (en) | 1975-08-11 | 1975-08-11 | Omnidirectional observing devcice |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5221720A true JPS5221720A (en) | 1977-02-18 |
Family
ID=14206370
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9796575A Pending JPS5221720A (en) | 1975-08-11 | 1975-08-11 | Omnidirectional observing devcice |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5221720A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5139767A (en) * | 1981-06-22 | 1992-08-18 | Mitsui Toatsu Chemicals, Incorporated | Production method of goethite |
-
1975
- 1975-08-11 JP JP9796575A patent/JPS5221720A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5139767A (en) * | 1981-06-22 | 1992-08-18 | Mitsui Toatsu Chemicals, Incorporated | Production method of goethite |
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