JPS641822Y2 - - Google Patents
Info
- Publication number
- JPS641822Y2 JPS641822Y2 JP9331184U JP9331184U JPS641822Y2 JP S641822 Y2 JPS641822 Y2 JP S641822Y2 JP 9331184 U JP9331184 U JP 9331184U JP 9331184 U JP9331184 U JP 9331184U JP S641822 Y2 JPS641822 Y2 JP S641822Y2
- Authority
- JP
- Japan
- Prior art keywords
- camera
- light
- incident
- shutter
- monitor
- 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.)
- Expired
Links
- 238000001514 detection method Methods 0.000 description 8
- 230000007257 malfunction Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 206010047571 Visual impairment Diseases 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
Landscapes
- Closed-Circuit Television Systems (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9331184U JPS619981U (ja) | 1984-06-22 | 1984-06-22 | テレビドアホン |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9331184U JPS619981U (ja) | 1984-06-22 | 1984-06-22 | テレビドアホン |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS619981U JPS619981U (ja) | 1986-01-21 |
| JPS641822Y2 true JPS641822Y2 (bg) | 1989-01-17 |
Family
ID=30650876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9331184U Granted JPS619981U (ja) | 1984-06-22 | 1984-06-22 | テレビドアホン |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS619981U (bg) |
-
1984
- 1984-06-22 JP JP9331184U patent/JPS619981U/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS619981U (ja) | 1986-01-21 |
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