JPS6368249U - - Google Patents
Info
- Publication number
- JPS6368249U JPS6368249U JP16240986U JP16240986U JPS6368249U JP S6368249 U JPS6368249 U JP S6368249U JP 16240986 U JP16240986 U JP 16240986U JP 16240986 U JP16240986 U JP 16240986U JP S6368249 U JPS6368249 U JP S6368249U
- Authority
- JP
- Japan
- Prior art keywords
- level
- circuit
- transmitting
- variable loss
- detection circuit
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Control Of Amplification And Gain Control (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Indicating And Signalling Devices For Elevators (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16240986U JPS6368249U (fr) | 1986-10-23 | 1986-10-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16240986U JPS6368249U (fr) | 1986-10-23 | 1986-10-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6368249U true JPS6368249U (fr) | 1988-05-09 |
Family
ID=31089640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16240986U Pending JPS6368249U (fr) | 1986-10-23 | 1986-10-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6368249U (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02183657A (ja) * | 1989-01-10 | 1990-07-18 | Hitachi Ltd | エレベーター通話装置通話制御方式 |
-
1986
- 1986-10-23 JP JP16240986U patent/JPS6368249U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02183657A (ja) * | 1989-01-10 | 1990-07-18 | Hitachi Ltd | エレベーター通話装置通話制御方式 |