JPH0328619Y2 - - Google Patents
Info
- Publication number
- JPH0328619Y2 JPH0328619Y2 JP8692288U JP8692288U JPH0328619Y2 JP H0328619 Y2 JPH0328619 Y2 JP H0328619Y2 JP 8692288 U JP8692288 U JP 8692288U JP 8692288 U JP8692288 U JP 8692288U JP H0328619 Y2 JPH0328619 Y2 JP H0328619Y2
- Authority
- JP
- Japan
- Prior art keywords
- switch
- tone signal
- intercom
- circuit
- signal
- 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
- 230000005540 biological transmission Effects 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 12
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 8
- 230000005236 sound signal Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Landscapes
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8692288U JPH0328619Y2 (en]) | 1988-06-30 | 1988-06-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8692288U JPH0328619Y2 (en]) | 1988-06-30 | 1988-06-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6418862U JPS6418862U (en]) | 1989-01-30 |
| JPH0328619Y2 true JPH0328619Y2 (en]) | 1991-06-19 |
Family
ID=31311562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8692288U Expired JPH0328619Y2 (en]) | 1988-06-30 | 1988-06-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0328619Y2 (en]) |
-
1988
- 1988-06-30 JP JP8692288U patent/JPH0328619Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6418862U (en]) | 1989-01-30 |
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