JPS5776938A - Interphone - Google Patents
InterphoneInfo
- Publication number
- JPS5776938A JPS5776938A JP15364180A JP15364180A JPS5776938A JP S5776938 A JPS5776938 A JP S5776938A JP 15364180 A JP15364180 A JP 15364180A JP 15364180 A JP15364180 A JP 15364180A JP S5776938 A JPS5776938 A JP S5776938A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- transmission
- reception
- speaker
- microphone
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- 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 |
---|---|---|---|
JP15364180A JPS5776938A (en) | 1980-10-30 | 1980-10-30 | Interphone |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15364180A JPS5776938A (en) | 1980-10-30 | 1980-10-30 | Interphone |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5776938A true JPS5776938A (en) | 1982-05-14 |
JPH0124391B2 JPH0124391B2 (ja) | 1989-05-11 |
Family
ID=15566954
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15364180A Granted JPS5776938A (en) | 1980-10-30 | 1980-10-30 | Interphone |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5776938A (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60113566A (ja) * | 1983-11-25 | 1985-06-20 | Pioneer Electronic Corp | Fm搬送波型インタ−ホン |
JPS62154839A (ja) * | 1985-12-26 | 1987-07-09 | Toa Tokushu Denki Kk | 会議電話装置 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5469307A (en) * | 1977-11-14 | 1979-06-04 | Toa Electric Co Ltd | Loudspeaking telephone set |
-
1980
- 1980-10-30 JP JP15364180A patent/JPS5776938A/ja active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5469307A (en) * | 1977-11-14 | 1979-06-04 | Toa Electric Co Ltd | Loudspeaking telephone set |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60113566A (ja) * | 1983-11-25 | 1985-06-20 | Pioneer Electronic Corp | Fm搬送波型インタ−ホン |
JPS62154839A (ja) * | 1985-12-26 | 1987-07-09 | Toa Tokushu Denki Kk | 会議電話装置 |
Also Published As
Publication number | Publication date |
---|---|
JPH0124391B2 (ja) | 1989-05-11 |
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