JPS6442964A - Radio telephone set - Google Patents
Radio telephone setInfo
- Publication number
- JPS6442964A JPS6442964A JP62200317A JP20031787A JPS6442964A JP S6442964 A JPS6442964 A JP S6442964A JP 62200317 A JP62200317 A JP 62200317A JP 20031787 A JP20031787 A JP 20031787A JP S6442964 A JPS6442964 A JP S6442964A
- Authority
- JP
- Japan
- Prior art keywords
- level
- reception
- transmission
- circuit
- tone volume
- 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
Landscapes
- Transceivers (AREA)
Abstract
PURPOSE:To optimize talking quality by detecting a transmission level and a reception level and controlling them to optimize the level thereby obtaining a radio telephone system having optimum side tone volume and reception tone volume. CONSTITUTION:A transmission level means 31 detecting an output transmission level of a transmission circuit 17 and a reception level means 32 detecting an input reception level of a reception circuit 26 are provided. Moreover, a 1st variable level circuit 34 adjusting the transmission level is inserted in series with the transmission circuit 17 and a 2nd variable level circuit 35 adjusting the reception level is inserted in series with the reception circuit 26. When the 1st and 2nd variable level circuits 34, 35, a processing circuit 33 and a D/A converter 36 are controlled in response to each detection level of the transmission level detection means 31 and the reception level detection means 32. Thus, the transmission level and the reception level are detected respectively and they are controlled to be an optimum level and optimum side tone volume and reception tone volume are obtained to optimize the talking quality.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62200317A JPS6442964A (en) | 1987-08-10 | 1987-08-10 | Radio telephone set |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62200317A JPS6442964A (en) | 1987-08-10 | 1987-08-10 | Radio telephone set |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6442964A true JPS6442964A (en) | 1989-02-15 |
Family
ID=16422298
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62200317A Pending JPS6442964A (en) | 1987-08-10 | 1987-08-10 | Radio telephone set |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6442964A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0536951U (en) * | 1991-10-18 | 1993-05-18 | 株式会社ケンウツド | Cordless phone |
EP0776113A3 (en) * | 1995-11-24 | 1999-03-17 | Nokia Mobile Phones Ltd. | Telephone handset with a sidetone preventive circuit |
-
1987
- 1987-08-10 JP JP62200317A patent/JPS6442964A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0536951U (en) * | 1991-10-18 | 1993-05-18 | 株式会社ケンウツド | Cordless phone |
EP0776113A3 (en) * | 1995-11-24 | 1999-03-17 | Nokia Mobile Phones Ltd. | Telephone handset with a sidetone preventive circuit |
US5946391A (en) * | 1995-11-24 | 1999-08-31 | Nokia Mobile Phones Limited | Telephones with talker sidetone |
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