JPH02120948U - - Google Patents
Info
- Publication number
- JPH02120948U JPH02120948U JP3064489U JP3064489U JPH02120948U JP H02120948 U JPH02120948 U JP H02120948U JP 3064489 U JP3064489 U JP 3064489U JP 3064489 U JP3064489 U JP 3064489U JP H02120948 U JPH02120948 U JP H02120948U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- control signal
- signal
- sine wave
- transmitting
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Mobile Radio Communication Systems (AREA)
Description
第１図は本考案のコードレス電話機の子機のゲ
インコントロール回路のブロツク図、第２図は同
じく本考案のコードレス電話機の親機のゲインコ
ントロール回路のブロツク図である。
３……受信回路、４……増幅回路、８……変調
回路、９……送信回路、１０……制御回路、１１
……スイツチ、１３……スピーチ回路、１６……
受信回路、２０……検出回路、２１……モデム、
２２……被制御回路。
FIG. 1 is a block diagram of a gain control circuit of a slave unit of a cordless telephone according to the present invention, and FIG. 2 is a block diagram of a gain control circuit of a base unit of a cordless telephone according to the present invention. 3... Receiving circuit, 4... Amplifying circuit, 8... Modulating circuit, 9... Transmitting circuit, 10... Control circuit, 11
...Switch, 13...Speech circuit, 16...
Receiving circuit, 20...detection circuit, 21...modem,
22...Controlled circuit.
Claims (1)
する親機と、前記送信回路及び受信回路と無線で
信号の授受を行なう受信回路及び送信回路を有す
る子機とを備える無線電話機において、子機にス
イツチ操作によつて多ビツトデイジタルのコント
ロール信号を発生する制御回路、前記多ビツトデ
イジタルのコントロール信号を正弦波のコントロ
ール信号に変換するモデム、前記正弦波に変換さ
れたコントロール信号にて搬送波信号を変調する
変調回路及び変調された搬送波信号を送信する送
信回路を設け、親機にスピーチ回路を介して電話
回線からの音声信号が加えられるリミツター回路
、搬送波信号を前記リミツター回路からの音声信
号にて変調する変調回路、変調された搬送波信号
を送信する送信回路、子機からの搬送波信号を受
信し前記正弦波のコントロール信号を復調する受
信回路、前記コントロール信号を検出する検出回
路、検出された正弦波のコントロール信号を多ビ
ツトデイジタルのコントロール信号に変換するモ
デム及びモデムからのコントロール信号にて制御
され前記リミツター回路の入力側に接続されたト
ランジスタを制御する被制御回路とを設けたコー
ドレス電話機のゲインコントロール回路。 A wireless telephone comprising a base unit connected to a telephone line and having a transmitting circuit and a receiving circuit, and a slave unit having a receiving circuit and a transmitting circuit that wirelessly exchange signals with the transmitting circuit and the receiving circuit. A control circuit that generates a multi-bit digital control signal by operation, a modem that converts the multi-bit digital control signal into a sine wave control signal, and a carrier signal that is modulated by the control signal converted to the sine wave. A modulation circuit and a transmission circuit for transmitting a modulated carrier wave signal are provided, a limiter circuit to which a voice signal from a telephone line is applied to the base unit via a speech circuit, and a carrier wave signal is modulated by the voice signal from the limiter circuit. a modulation circuit, a transmission circuit that transmits a modulated carrier signal, a reception circuit that receives a carrier signal from a slave unit and demodulates the sine wave control signal, a detection circuit that detects the control signal, and a detection circuit that detects the sine wave control signal. A gain control circuit for a cordless telephone comprising a modem that converts a control signal into a multi-bit digital control signal, and a controlled circuit that is controlled by the control signal from the modem and controls a transistor connected to the input side of the limiter circuit. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989030644U JP2569160Y2 (en) | 1989-03-16 | 1989-03-16 | Gain control circuit for cordless telephone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989030644U JP2569160Y2 (en) | 1989-03-16 | 1989-03-16 | Gain control circuit for cordless telephone |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02120948U true JPH02120948U (en) | 1990-10-01 |
| JP2569160Y2 JP2569160Y2 (en) | 1998-04-22 |
Family
ID=31255887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989030644U Expired - Fee Related JP2569160Y2 (en) | 1989-03-16 | 1989-03-16 | Gain control circuit for cordless telephone |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2569160Y2 (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 |
| WO2019221291A1 (en) * | 2018-05-18 | 2019-11-21 | ハジー技研株式会社 | Filling port opening/closing mechanism for check valve-equipped package |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6150429A (en) * | 1984-08-20 | 1986-03-12 | Toshiba Corp | Reception sound volume adjusting system of radiotelephone set |
-
1989
- 1989-03-16 JP JP1989030644U patent/JP2569160Y2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6150429A (en) * | 1984-08-20 | 1986-03-12 | Toshiba Corp | Reception sound volume adjusting system of radiotelephone set |
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 |
| WO2019221291A1 (en) * | 2018-05-18 | 2019-11-21 | ハジー技研株式会社 | Filling port opening/closing mechanism for check valve-equipped package |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2569160Y2 (en) | 1998-04-22 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |