JPH0390575U - - Google Patents
Info
- Publication number
- JPH0390575U JPH0390575U JP1989151329U JP15132989U JPH0390575U JP H0390575 U JPH0390575 U JP H0390575U JP 1989151329 U JP1989151329 U JP 1989151329U JP 15132989 U JP15132989 U JP 15132989U JP H0390575 U JPH0390575 U JP H0390575U
- Authority
- JP
- Japan
- Prior art keywords
- center device
- mhz
- polling
- frequency signal
- terminal devices
- 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
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims 2
- 230000005856 abnormality Effects 0.000 claims 1
- 238000012806 monitoring device Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989151329U JPH0733501Y2 (ja) | 1989-12-28 | 1989-12-28 | 片方向ｃａｔｖシステムの端末状態監視装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989151329U JPH0733501Y2 (ja) | 1989-12-28 | 1989-12-28 | 片方向ｃａｔｖシステムの端末状態監視装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0390575U true JPH0390575U (enExample) | 1991-09-13 |
| JPH0733501Y2 JPH0733501Y2 (ja) | 1995-07-31 |
Family
ID=31697635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989151329U Expired - Lifetime JPH0733501Y2 (ja) | 1989-12-28 | 1989-12-28 | 片方向ｃａｔｖシステムの端末状態監視装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0733501Y2 (enExample) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53132938A (en) * | 1977-04-25 | 1978-11-20 | Matsushita Electric Ind Co Ltd | Two-way data transmitter |
-
1989
- 1989-12-28 JP JP1989151329U patent/JPH0733501Y2/ja not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53132938A (en) * | 1977-04-25 | 1978-11-20 | Matsushita Electric Ind Co Ltd | Two-way data transmitter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0733501Y2 (ja) | 1995-07-31 |
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