JPH01167737U - - Google Patents
Info
- Publication number
- JPH01167737U JPH01167737U JP1988065258U JP6525888U JPH01167737U JP H01167737 U JPH01167737 U JP H01167737U JP 1988065258 U JP1988065258 U JP 1988065258U JP 6525888 U JP6525888 U JP 6525888U JP H01167737 U JPH01167737 U JP H01167737U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- speaker
- handset
- state
- amplifier circuit
- 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
- 238000010586 diagram Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
Landscapes
- Mobile Radio Communication Systems (AREA)
Description
第１図は本考案の無線電話の子機の放音装置の
一実施例を示した回路図、第２図は従来の無線電
話の子機に用いられていた放音装置に関する回路
図である。
主な図番の説明、３……第１増幅回路、４……
受話スピーカ、６……第１切換スイツチ、８……
第１スイツチングトランジスタ、１４……送信回
路、１５……呼出し用スピーカ。
Fig. 1 is a circuit diagram showing an embodiment of a sound emitting device for a handset of a wireless telephone according to the present invention, and Fig. 2 is a circuit diagram of a sound emitting device used in a conventional handset of a wireless telephone. . Explanation of main drawing numbers, 3...first amplifier circuit, 4...
Receiving speaker, 6...First changeover switch, 8...
First switching transistor, 14... Transmission circuit, 15... Calling speaker.
Claims (1)
無線電話の子機において、該子機を待機状態又は
、通話状態に切換える切換スイツチと、親機を介
し送信される呼出し信号及び通話信号を受信する
受信回路と、該受信回路で受信した呼出し信号及
び通話信号を増幅する増幅回路と、該増幅回路に
接続し、通話信号の放音動作を行なう受話スピー
カと、該受話スピーカを前記切換スイツチの通話
状態の切換えに対応して動作状態にさせるスイツ
チングトランジスタと、前記増幅回路に接続し、
前記受話スピーカより高インピーダンスを有する
と共に呼出し信号に対応する周波数帯域の信号の
放音動作を行なう呼出し用スピーカとよりなり、
前記切換スイツチが待機状態にある時には、前記
スイツチングトランジスタにより前記受話スピー
カを不動作状態にして、増幅回路の出力信号を呼
出し用スピーカに加え、放音させるようにし、ま
た、前記切換スイツチが通話状態にある時には、
前記スイツチングトランジスタにより前記受話ス
ピーカを動作状態にして、増幅回路の出力信号を
受話スピーカに加え、放音させるようにしたこと
を特徴とする無線電話の子機の放音装置。 A handset of a wireless telephone that is wirelessly connected to a base unit connected to a telephone line has a switch that switches the handset to a standby state or a talking state, and a switch that switches the handset to a standby state or a talking state, and a switch that switches the handset to a call signal and a call signal that are transmitted via the base unit. a receiving circuit for receiving a signal; an amplifier circuit for amplifying a calling signal and a call signal received by the receiving circuit; a receiver speaker connected to the amplifier circuit and configured to emit a sound for the call signal; a switching transistor that is brought into operation in response to switching of the call state of the switch, and a switching transistor connected to the amplifier circuit;
a calling speaker having a higher impedance than the receiving speaker and emitting a signal in a frequency band corresponding to the calling signal;
When the changeover switch is in the standby state, the switching transistor disables the receiving speaker and applies the output signal of the amplifier circuit to the calling speaker to emit sound. When in a state,
A sound emitting device for a handset of a wireless telephone, characterized in that the switching transistor puts the receiver speaker into an operating state, applies an output signal of an amplifier circuit to the receiver speaker, and emits sound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988065258U JPH0540602Y2 (en) | 1988-05-18 | 1988-05-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988065258U JPH0540602Y2 (en) | 1988-05-18 | 1988-05-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01167737U true JPH01167737U (en) | 1989-11-27 |
| JPH0540602Y2 JPH0540602Y2 (en) | 1993-10-14 |
Family
ID=31290697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988065258U Expired - Lifetime JPH0540602Y2 (en) | 1988-05-18 | 1988-05-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0540602Y2 (en) |
-
1988
- 1988-05-18 JP JP1988065258U patent/JPH0540602Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0540602Y2 (en) | 1993-10-14 |
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