JPS5342608A - Speaker telephone set - Google Patents
Speaker telephone setInfo
- Publication number
- JPS5342608A JPS5342608A JP11754476A JP11754476A JPS5342608A JP S5342608 A JPS5342608 A JP S5342608A JP 11754476 A JP11754476 A JP 11754476A JP 11754476 A JP11754476 A JP 11754476A JP S5342608 A JPS5342608 A JP S5342608A
- Authority
- JP
- Japan
- Prior art keywords
- telephone set
- speaker telephone
- speaker
- cost
- reduce
- 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
- H04M9/10—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic with switching of direction of transmission by voice frequency
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
Abstract
PURPOSE:A delta circuit is used to utilize talking functions sufficiently even under the enviromental condition of intrusive noises, so that a simple circuit constitution can reduce its cost and obtain the high reliability.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11754476A JPS5342608A (en) | 1976-09-30 | 1976-09-30 | Speaker telephone set |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11754476A JPS5342608A (en) | 1976-09-30 | 1976-09-30 | Speaker telephone set |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5342608A true JPS5342608A (en) | 1978-04-18 |
JPS5745386B2 JPS5745386B2 (en) | 1982-09-27 |
Family
ID=14714418
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11754476A Granted JPS5342608A (en) | 1976-09-30 | 1976-09-30 | Speaker telephone set |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5342608A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5350609U (en) * | 1976-10-01 | 1978-04-28 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0741425Y2 (en) * | 1992-05-07 | 1995-09-27 | ポリマー化成株式会社 | Curtain box assembly |
-
1976
- 1976-09-30 JP JP11754476A patent/JPS5342608A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5350609U (en) * | 1976-10-01 | 1978-04-28 | ||
JPS5713634Y2 (en) * | 1976-10-01 | 1982-03-19 |
Also Published As
Publication number | Publication date |
---|---|
JPS5745386B2 (en) | 1982-09-27 |
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