JPH0241530U - - Google Patents
Info
- Publication number
- JPH0241530U JPH0241530U JP11949588U JP11949588U JPH0241530U JP H0241530 U JPH0241530 U JP H0241530U JP 11949588 U JP11949588 U JP 11949588U JP 11949588 U JP11949588 U JP 11949588U JP H0241530 U JPH0241530 U JP H0241530U
- Authority
- JP
- Japan
- Prior art keywords
- noise reduction
- base station
- mobile station
- demodulated signal
- cordless telephone
- 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
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Noise Elimination (AREA)
Description
第１図は本考案による雑音低減装置を無線送受
信機の受信段に実施した回路構成図、第２図は第
１図の雑音低減回路の断続によるノイズレベル対
音声信号のデイエンフアシス周波数特性グラフで
ある。
２……ＦＭ検波器、３……雑音低減回路、４…
…音声増幅器、８……レベル検波器。
Fig. 1 is a circuit configuration diagram in which the noise reduction device according to the present invention is implemented in the reception stage of a wireless transmitter/receiver, and Fig. 2 is a graph of the noise level versus voice signal de-emphasis frequency characteristic due to the intermittent operation of the noise reduction circuit of Fig. 1. . 2...FM detector, 3...Noise reduction circuit, 4...
...Audio amplifier, 8...Level detector.
Claims (1)
える基地局と、移動可能の無線送受信機からなる
移動局との間を無線リンクを介して通話するよう
にしたコードレス電話装置において、上記基地局
及び上記移動局の受信機夫夫に中間周波段から取
出した受信信号を復調するＦＭ検波器と音声増幅
器との間に、上記復調信号の一部をレベル検波器
を介して聴感上の最大障害周波数が通過される雑
音低減回路を設けてなることを特徴とするコード
レス電話の雑音低減装置。 A cordless telephone device configured to communicate via a wireless link between a base station equipped with a connection device and a transceiver connected to a telephone line, and a mobile station comprising a movable radio transceiver, the base station and A part of the demodulated signal is sent to the receiver of the mobile station between the FM detector that demodulates the received signal taken out from the intermediate frequency stage and the audio amplifier, and then passes the part of the demodulated signal through a level detector to the maximum audible interference frequency. What is claimed is: 1. A noise reduction device for a cordless telephone, comprising a noise reduction circuit through which the noise is passed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11949588U JPH0241530U (en) | 1988-09-12 | 1988-09-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11949588U JPH0241530U (en) | 1988-09-12 | 1988-09-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0241530U true JPH0241530U (en) | 1990-03-22 |
Family
ID=31364778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11949588U Pending JPH0241530U (en) | 1988-09-12 | 1988-09-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0241530U (en) |
-
1988
- 1988-09-12 JP JP11949588U patent/JPH0241530U/ja active Pending
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