JPH01168146A - Telephone set - Google Patents
Telephone setInfo
- Publication number
- JPH01168146A JPH01168146A JP32530787A JP32530787A JPH01168146A JP H01168146 A JPH01168146 A JP H01168146A JP 32530787 A JP32530787 A JP 32530787A JP 32530787 A JP32530787 A JP 32530787A JP H01168146 A JPH01168146 A JP H01168146A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- selection signal
- transmission
- 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
- 238000004891 communication Methods 0.000 claims description 16
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 abstract description 8
- 230000008054 signal transmission Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 101710170231 Antimicrobial peptide 2 Proteins 0.000 description 1
- AVKUERGKIZMTKX-NJBDSQKTSA-N ampicillin Chemical compound C1([C@@H](N)C(=O)N[C@H]2[C@H]3SC([C@@H](N3C2=O)C(O)=O)(C)C)=CC=CC=C1 AVKUERGKIZMTKX-NJBDSQKTSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、電話機、特にその回路構成に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a telephone, particularly its circuit configuration.
従来、プッシュボタン方式の選択信号（以下ＰＢ信号と
いう）を送出することか可能な電話機は、（１）通話回
路を介して、あるいは、（２）選択（３号送出回路から
直接回線に対してＰＢ倍信号送出するものであった。通
常、この種の電話機においては、ＰＢ倍信号通話回路に
含まれる受話回路を通して、受話器あるいはスピーカに
よって、発呼者に音波によって表示するといった方法が
とられていた。Conventionally, telephones capable of transmitting push-button selection signals (hereinafter referred to as PB signals) have been able to transmit (1) via a communication circuit, or (2) directly from the selection (No. 3 transmission circuit to the line). Normally, this type of telephone uses a method in which a sound wave is displayed to the caller through the receiver circuit included in the PB double signal communication circuit, using the handset or speaker. Ta.
しかしながら、従来の電話機にあっては、一般にＰＢ倍
信号、音声信号と比較し大振幅であるために、受話回路
の能力をこえ、出力波形がひずみ、非常に耳障わすな音
波が発呼者に伝わるといった難点があり、前記（２）の
場合その現象が特に顕著であった。また、前記（１）の
場合においても通話時とＰＢ信号送出時の電話機のイン
ピーダンスが変化するものであっては、通話回路の２線
−４線変換回路の不平衡性が増大し、上記現象が顕著で
あるという問題点かあった。However, in conventional telephones, the PB multiplied signal generally has a large amplitude compared to the voice signal, which exceeds the ability of the receiving circuit, distorts the output waveform, and sends very harsh sound waves to the caller. This phenomenon was particularly noticeable in the case of (2) above. In addition, even in the case of (1) above, if the impedance of the telephone changes during a call and when sending out a PB signal, the unbalance of the 2-wire to 4-wire conversion circuit of the call circuit increases, causing the above-mentioned phenomenon. There was a problem in that it was noticeable.
この発明は、このような問題点を解決するためになされ
たもので、通話時の受話利得と、選択信号送出中の受話
利得を切り換える切り換え装置を有したことにより、Ｐ
Ｂ信号の発呼者への表示を安定かつ高品質に行える電話
機を提供することを目的としている。The present invention was made to solve these problems, and by having a switching device that switches the listening gain during a call and the listening gain while transmitting a selection signal, it is possible to
It is an object of the present invention to provide a telephone that can display a B signal to a caller in a stable and high quality manner.
このため、この発明において、通話時の受話利得とＰＢ
信号送出時の受話利得を切り換える通話回路を備えるこ
とによりＰＲ信号送出時のＰＢ信号音の発呼者への表示
を、安定かつ高品質に行なうことにより、前記の目的を
達しようとするものである。Therefore, in this invention, the receiving gain during a call and the PB
The above objective is achieved by providing a communication circuit that switches the receiving gain when transmitting a signal, thereby displaying the PB signal tone to the caller in a stable and high quality manner when transmitting a PR signal. be.
以上のような構成により、この発明による電話機は、通
話時の受話利得とＰＢ信号送出時の受話利得を切り換え
ることにより、ＰＢ信号の発呼者への表示を安定かつ品
質良く行なえる。With the above configuration, the telephone set according to the present invention can display a PB signal to the caller stably and with good quality by switching between the receiving gain during a call and the receiving gain when transmitting a PB signal.
以下に、この発明の−・実施例を図に基づいて説明する
。Embodiments of the present invention will be described below with reference to the drawings.
第１図はこの発明の一実施例に係る電話機を示すブロッ
ク構成図、第２図は同主要部分を示す構成図である。FIG. 1 is a block diagram showing a telephone set according to an embodiment of the present invention, and FIG. 2 is a diagram showing the main parts thereof.
図において、１は不図示の回線に接続する端子く・
Ｌｌ、２は同端子Ｌ２．３はこれらの端子Ｌ１１、Ｌ２
２に接続し、オンフッタ状態のときに、被呼を話者に伝
えることを目的とした呼出信号表示回路、４はこの呼出
信号表示回路３を接続した端子り、１．ｉ子り、２間に
極性反転があった場合でも、後述の通話回路６１選択信
号送出回路８その他の回路を安定に作動するために付加
した整流回路、５は前記回線と通話回路６゜選択信号送
出回路８その他の回路側をオフフッタ時に接続するフッ
クスイッチ、６はこのフックスイッチ５と接続した通話
回路で、この通話回路６は通話４行なうことを目的とし
、２線−４線変換回路部分を含有して構成してあり、７
はこの通話回路６と接続し通話を行なうための送受話器
、８はこの送受話器７を接続した通信回路６と前記フッ
クスイッチ５に接続し選択信号の送出を目的とじＰＢ信
号を送出可能である選択信号送出回路、９はこの選択信
号送出回路８に接続し希望する選択信号を選択するため
のキーボードである。In the figure, 1 is a terminal connected to a line (not shown). 2 is the terminal L2. 3 is the terminal L1, L2.
2, a ringing signal display circuit for the purpose of informing the speaker of the call when in the on-footer state; 4 is a terminal to which this ringing signal display circuit 3 is connected; 1. 5 is a rectifier circuit added to stably operate the communication circuit 61 selection signal sending circuit 8 and other circuits described later even if there is a polarity reversal between 2 and 5. A hook switch 6 connects the signal sending circuit 8 and other circuits when off-footer, and 6 is a communication circuit connected to this hook switch 5. This communication circuit 6 is intended for making 4 calls, and is a 2-wire to 4-wire conversion circuit part. It is composed of 7
8 is a handset connected to this telephone circuit 6 for making a telephone call, and 8 is connected to the communication circuit 6 to which this handset 7 is connected and the hook switch 5, and is capable of sending out a PB signal for the purpose of sending out a selection signal. A selection signal sending circuit 9 is a keyboard connected to this selection signal sending circuit 8 for selecting a desired selection signal.
１０は通話時の２線−４線変換回路部分２０に接続され
、回線その他のインピーダンスを補償する平衡回路バラ
ンシングネットワークＢＮＩ、１１はＰＢ送出時、同し
くインピーダンスを補償するバランシングネットワーク
ＢＮ２．１２は通話回路６からみた選択信号送出回路８
側のインピーダンス２゜ＩＡい １３は通話回路６から
みた回線側インピーダンスＺＬ、１４は通話回路６自体
のインピーダンスＺＩＣ１１５は音声もしくはＰＢ信号
を回線に送出するための送話アンプ、１６は音声その他
の信号を話者に伝えるための受話アンプ、１７は通話時
送話アンプ入力とマイクＭＩＣ２２を接続し、ＰＢ信号
送出時、送話アンプ入力と選択信号送出回路のＰＢ比出
力接続するスイッチＳＷ１．１８は通話時に断、ＰＢ送
出時に接となり、ＰＢ送出時の受話アンプ利得を下げる
ことを目的とするスイッチＳＷ２．１９は２線−４線変
換回路に通話時ＢＮＩを選択し、ＰＢ送出時、ＢＮ２を
選択しそれぞれ接続するスイッチＳＷ３．２０は１０〜
１１゜１５〜１９よりなる２線−４線変換回路部分、２
１は電気信号を音波に変換し出力するスピーカＳＰＩ、
２２は音波を電機信号に変換するマイクＭＩＣＩである
。10 is a balanced circuit balancing network BNI which is connected to the 2-wire to 4-wire conversion circuit section 20 during a call and compensates for the impedance of the line and other components; 11 is a balancing network BN which also compensates for impedance during PB transmission; Selection signal sending circuit 8 seen from circuit 6
13 is the line side impedance ZL as seen from the communication circuit 6, 14 is the impedance of the communication circuit 6 itself, ZIC115 is the transmitting amplifier for sending voice or PB signals to the line, and 16 is the voice and other signals. A receiving amplifier 17 connects the transmitting amplifier input to the microphone MIC22 during a call, and a switch SW1.18 connects the transmitting amplifier input and the PB ratio output of the selection signal sending circuit when transmitting a PB signal. Switch SW2.19, which is disconnected during a call and connected when sending out a PB, is intended to lower the receiver amplifier gain when sending out a PB, selects BNI during a call in the 2-wire to 4-wire conversion circuit, and selects BN2 when sending out a PB. Switch SW3.20 to select and connect respectively is 10~
11° 2-wire to 4-wire conversion circuit part consisting of 15 to 19, 2
1 is a speaker SPI that converts electrical signals into sound waves and outputs them;
22 is a microphone MICI that converts sound waves into electrical signals.
前記受話アンプ１６中、Ｒ３〜Ｒ９は受話利得、または
オフセットを決定する抵抗でありＡＭＰＩ、ＡＭＰ２は
オペアンプである。In the receiver amplifier 16, R3 to R9 are resistors that determine the receiver gain or offset, and AMPI and AMP2 are operational amplifiers.
Ｒ１，Ｒ２はインピーダンス１２〜１４を補償するため
、ＢＮＩ １０．ＢＮ２ １ １ のインピーダン
ス１２〜１４に対するインピーダンスの比率を決定する
ものであり、通常ＢＮＩ、８Ｎ２のインピーダンスをそ
れぞれＺＲＮＩ ＋ ＺＲＮ２ とするとＲ＋ ／
Ｒ２＝ ＺＲＮＩまたはＺ ＢＮ２ ／ （ｚ ＩＣ／
／Ｚ Ｌ、／／ Ｚ ｏ＋Ａｂ）とすることにより、２
線−４線変換を達成するものである。ここに、Ｚ ＋ｃ
／／Ｚ Ｌ／／ Ｚ ＤＩＡＬは並列に接続したインピ
ーダンスＺ ＩＣ＋ ｚＬ ＋ ＺＤＩ＾しの合成
インピーダンスを示す。R1 and R2 compensate for impedances 12 to 14, so BNI 10. It determines the ratio of impedance to impedances 12 to 14 of BN2 1 1. Normally, if the impedances of BNI and 8N2 are ZRNI + ZRN2, then R+ /
R2= ZRNI or Z BN2 / (z IC/
/Z L, //Z o+Ab), 2
This achieves line-to-four line conversion. Here, Z +c
//Z L // Z DIAL indicates a composite impedance of impedances Z IC + zL + ZDI^ connected in parallel.
選択信号送出回路８に付加しである信号ＭＵＴＥは、Ｐ
Ｂ送出時とそれ以外の場合とでは、状態が変化し、１７
〜１９のＳＷｔ〜ＳＷ３を制御するものである。The signal MUTE added to the selection signal sending circuit 8 is P
The state changes between when B is sent and in other cases, and 17
~19 SWt~SW3 are controlled.
通話回路６における入出力端子ＶＬ、Ｇは第１図に示す
ようにそれぞれ選択信号送出回路８および回線側へと接
続されるものであり、第２図におけるＶ、、、Ｇと同じ
ものであるが、第２図においては、２線−４線変換回路
部分２０の概要を理解しやすくするため、それぞれの等
価的インピーダンスである２、、 、 ２．、ＡＬが接
続されているように、表示しである。The input/output terminals VL and G in the communication circuit 6 are connected to the selection signal sending circuit 8 and the line side, respectively, as shown in FIG. 1, and are the same as V, ..., G in FIG. 2. However, in FIG. 2, in order to make it easier to understand the outline of the 2-wire to 4-wire conversion circuit section 20, the respective equivalent impedances are 2, , 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, and 2 are shown in FIG. , AL are connected.
上記構成において、通話時その他オフフック時で、ＰＢ
送出時以外の状態の場合、選択信号送出回路８の信号Ｍ
ＵＴＥが、ＳＷＩ〜ＳＷ３を制御し、マイクＭＩＣＩ
２２を送話アンプ１５に接続し、送話アンプ１５にマ
イクＭＩＣＩ２２の出力を人力させ音声を回線に送出す
るとを可能にし、ＳＷ２を開放することにより、ＡＭＰ
２部分の利得をｖ。ｕｔ／ｖＩＮ＝Ｒ９／Ｒ７（ここで
Ｖ。ｕｔは出力電圧、ＶＨＨは入力端子）とし、ＳＷ３
を制御しＢＮＩとブリッジを持続させる。In the above configuration, during a call or other off-hook time, the PB
In the case of a state other than the time of sending, the signal M of the selection signal sending circuit 8
The UTE controls SWI to SW3, and the microphone MICI
22 to the transmitting amplifier 15, allowing the transmitting amplifier 15 to manually output the microphone MICI 22 and transmit the audio to the line, and by opening SW2, the AMP
The gain of the two parts is v. ut/vIN=R9/R7 (here, V. ut is the output voltage, VHH is the input terminal), and SW3
Control and maintain BNI and bridge.
つぎに、発呼者が、キーボード９を押下した場合、選択
信号送出回路８のＰＢ比出力らＰＲ信号が送出され、ま
た、ＳＷＩを制御するとこによって、ＰＢ倍信号送話ア
ンプ１５を通して回線に送出せしめ、ＳＷ２を制御する
ことにより受話利得を電圧でＲ８／ （Ｒａ ＋Ｒ９）
に減少させ、ＳＷ３を制御することにより、ＢＮ２とブ
リッジを接続させるものである。−数的に通信回路６１
選択信号送出回路８は能動素子で構成される場合が多く
、そのため、通話時とＰＢ送出時では、Ｚ、ｃおよびＺ
ＤＩＡＬが変化する場合か応々にしてみうけられるが
、それに合わせてＢＮｌ、ＢＮ２を選択するということ
により、２ｆｉ−４線変換の安定性を確保するものであ
る。Next, when the calling party presses the keyboard 9, a PR signal is sent from the PB ratio output of the selection signal sending circuit 8, and by controlling the SWI, the PB double signal is sent to the line through the PB double signal sending amplifier 15. By controlling SW2, the receiving gain is set to R8/(Ra +R9) in voltage.
By controlling SW3, BN2 and the bridge are connected. - Numerically communication circuit 61
The selection signal sending circuit 8 is often composed of active elements, so during a call and when sending a PB, Z, c, and Z
This may occur depending on the case where DIAL changes, but by selecting BN1 and BN2 accordingly, stability of 2fi-4 line conversion is ensured.
この発明の一実施例によりば、プッシュボタン方式の選
択信号を送出することが可能で、その送出中、プッシュ
ボタン信号を受話器により確認することが可能な電話機
であって、通話時の受話利得とＰＢ低信号送出時受話利
得を切り換え可能な切り換え装置である２線−４線変換
部分２０を有したことにより、ＰＢ低信号送出時ＰＢ倍
信号発呼者への表示を、安定、かつ高品質に行える電話
機を提供しつる。According to an embodiment of the present invention, there is provided a telephone capable of transmitting a push-button type selection signal, and during transmission, the push-button signal can be confirmed by a handset, and the receiving gain during a call is By having the 2-wire to 4-wire conversion section 20, which is a switching device that can switch the receiving gain when transmitting a low PB signal, the display of the PB double signal to the caller when transmitting a low PB signal is stable and of high quality. Provides a phone that can be used.
また、プッシュボタン方式の選択信号を送出することか
可能で、通話回路の２線−４線変換回路を含む電話機で
、通話時と選択信号送出時で、その平衡回路の定数部分
であるＢＮＩとＢＮ２を切り換えることを可能とするこ
とにより、ＰＢ低信号送出時ＰＢ倍信号発呼者への表示
を安定、かつ品質良く行なうことができる。In addition, it is possible to send a push-button type selection signal, and with a telephone that includes a 2-wire to 4-wire conversion circuit for the communication circuit, the BNI, which is the constant part of the balanced circuit, is By making it possible to switch BN2, it is possible to display a PB double signal to the caller stably and with good quality when a PB low signal is sent.
以上に説明してきたように、この発明によれば、ＰＢ送
出時と、それ以外の通話時などのオフフッタ時とでの受
話利得を切り換え可能な切り換え装置を有したことによ
り、ＰＢ（２号の発呼者への音波による表示を安定、か
つ高品質に行うことを達成できる電話機を提供しつると
いう効果を有する。As explained above, according to the present invention, by having a switching device that can switch the reception gain between PB transmission and off-footer during other calls, PB (No. 2) This has the effect of providing a telephone that can stably and high-quality display sound waves to a caller.
第１図はこの発明の一実施例に係る電話機を示すブロッ
ク構成図、第２図は同主要部分を示す構成図である。
図中、６は通話回路、７は送受話器、８は選択信号送出
回路、９はキーボード、１０はＢＮＩ、１１はＢＮ２．
１２はＺ。ＩＡＬ、１４はＺＩＣｔ１５は送話アンプ、
１６は受話アンプ、１７はＳＷｔ、１８はＳＷ２．１９
はＳＷ３．２０は２線−４線変換回路部分である。
なお、各図中、同一符号は同一部分または相当部分を示
す。FIG. 1 is a block diagram showing a telephone set according to an embodiment of the present invention, and FIG. 2 is a diagram showing the main parts thereof. In the figure, 6 is a communication circuit, 7 is a handset, 8 is a selection signal sending circuit, 9 is a keyboard, 10 is a BNI, 11 is a BN2.
12 is Z. IAL, 14 is ZICt15 is a transmitting amplifier,
16 is the receiver amplifier, 17 is SWt, 18 is SW2.19
SW3.20 is the 2-wire to 4-wire conversion circuit part. In each figure, the same reference numerals indicate the same or equivalent parts.
Claims (2)
送出中、プッシュボタン信号を、受話器により確認可能
な電話機であって、通話時の受話利得と選択信号送出中
の受話利得を切り換えることが可能である通話回路を備
えたことを特徴とする電話機。(1) A telephone that can send out a push-button selection signal, and while it is being sent, the push-button signal can be confirmed by the handset, and it is possible to switch between the listening gain during a call and the listening gain while sending the selection signal. A telephone characterized by being equipped with a telephone communication circuit.
時と選択信号送出時で、その平衡回路の定数を切り換え
可能であることを特徴とする特許請求の範囲第１項記載
の電話機。(2) The communication circuit is a 2-wire to 4-wire conversion circuit, and the constant of the balance circuit can be switched between during a communication and when sending out a selection signal. telephone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32530787A JPH01168146A (en) | 1987-12-24 | 1987-12-24 | Telephone set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32530787A JPH01168146A (en) | 1987-12-24 | 1987-12-24 | Telephone set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01168146A true JPH01168146A (en) | 1989-07-03 |
Family
ID=18175357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32530787A Pending JPH01168146A (en) | 1987-12-24 | 1987-12-24 | Telephone set |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01168146A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0378353A (en) * | 1989-08-21 | 1991-04-03 | Toshiba Corp | Telephone terminal equipment |
| JPH0453422A (en) * | 1990-06-19 | 1992-02-21 | Tsunoda Tekko Kk | Running-type moving machine having tree-transplanter and transplanting method of tree |
| JPH04135425A (en) * | 1990-09-28 | 1992-05-08 | Yoneo Tsunoda | Mobile prime mover with tree transplanter and method for transplanting and executing tree |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61354B2 (en) * | 1976-02-26 | 1986-01-08 | Rasutenbaagu Burateinyuumu Mainzu Ltd | |
| JPS61225953A (en) * | 1985-03-29 | 1986-10-07 | Nippon Telegr & Teleph Corp <Ntt> | Telephone set |
-
1987
- 1987-12-24 JP JP32530787A patent/JPH01168146A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61354B2 (en) * | 1976-02-26 | 1986-01-08 | Rasutenbaagu Burateinyuumu Mainzu Ltd | |
| JPS61225953A (en) * | 1985-03-29 | 1986-10-07 | Nippon Telegr & Teleph Corp <Ntt> | Telephone set |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0378353A (en) * | 1989-08-21 | 1991-04-03 | Toshiba Corp | Telephone terminal equipment |
| JPH0453422A (en) * | 1990-06-19 | 1992-02-21 | Tsunoda Tekko Kk | Running-type moving machine having tree-transplanter and transplanting method of tree |
| JPH04135425A (en) * | 1990-09-28 | 1992-05-08 | Yoneo Tsunoda | Mobile prime mover with tree transplanter and method for transplanting and executing tree |
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