JPS5937744A - Annunciator of radio telephone set - Google Patents

Annunciator of radio telephone set

Info

Publication number
JPS5937744A
JPS5937744A JP57148666A JP14866682A JPS5937744A JP S5937744 A JPS5937744 A JP S5937744A JP 57148666 A JP57148666 A JP 57148666A JP 14866682 A JP14866682 A JP 14866682A JP S5937744 A JPS5937744 A JP S5937744A
Authority
JP
Japan
Prior art keywords
circuit
signal
output
slave
communication
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
Application number
JP57148666A
Other languages
Japanese (ja)
Other versions
JPH029494B2 (en
Inventor
Isao Otawara
大田原 勲夫
Mitsuo Mori
森 光雄
Taketoshi Ishikawa
石川 健敏
Yasuo Komatsu
小松 康夫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokyo Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
Original Assignee
Tokyo Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tokyo Sanyo Electric Co Ltd, Sanyo Electric Co Ltd, Sanyo Denki Co Ltd filed Critical Tokyo Sanyo Electric Co Ltd
Priority to JP57148666A priority Critical patent/JPS5937744A/en
Publication of JPS5937744A publication Critical patent/JPS5937744A/en
Publication of JPH029494B2 publication Critical patent/JPH029494B2/ja
Granted legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02Terminal devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE:To know that another slave equipments is in communication at a look, to prevent a transmitting circuit from being operated by mistake, and to prevent the generation of radio interference, by operating annunciating circuits of respective slave equipments while some slave equipment is in communication with a master equipment. CONSTITUTION:The master equipment is connected to a telephone circuit and radio communication between the master equipment and plural slave equipments each provided with a receiving circuit 9 and a transmitting circuit 8 is performed. The circuit 9 of every slave equipment is provided with an IF signal detecting circuit 29 and a voice output control circuit 28 which amplifies a call signal selectively. Further, a circuit monitoring circuit 36 which monitors output signals of both circuits 28 and 29 is provided. The annunciating circuit 32 consisting of a transistor 30 and a light emitting diode 31 is provided on the output side of the circuit 36 and the annunciating circuit 32 is controlled by the output of the circuit 36. Then the output of the circuit 36 goes to a level H by the output of the circuit 28 in communication of some slave equipment to radiate the diode 31, thus annunciating the state that other slave equipments are in communication. Consequently, erroneous operation of the circuit 8 by a hook switch 35 is eliminated to prevent radio interference.

Description

【発明の詳細な説明】 (イ)産業上の利用分野 本発明は電話回線に接続された親機と複数の子機間を無
線で信号の授受を行う無線電話機の報知装置に関する。
DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a notification device for a radio telephone that wirelessly transmits and receives signals between a base unit connected to a telephone line and a plurality of slave units.

(ロ)背景技術 最近電話回線に接続された親機より離れたところにある
子機とでもって、無線で電話することができるようにし
た無線電話機において、利用効率を高めるため1つの親
機に対して複数の子機を設けることが行なわれている。
(B) Background Art Recently, in wireless telephones that have been made possible to make wireless calls by connecting a base unit to a base unit connected to a telephone line and a slave unit located at a distance, in order to increase usage efficiency, one base unit has been connected to the base unit. For this purpose, a plurality of slave units are provided.

ところで前記親機と子機とに夫々送信回路及び受信回路
を設け、送信回路では搬送波を呼出し信号、あるいはダ
イヤル信号、又は送受話信号で変調し電波を送信し、受
信回路では前記搬送波を受信し復調してもとの信号にす
ることにより交信を行なっているが、前記各子機から送
信される搬送波の周波数は同一にしている。斯るものに
おいてはある子機が交信中に他の子機を使用し搬送波を
送信させると同一周波数(co −cbannel )
混信が生じ、正常な電話通信を妨げる。
By the way, the base unit and the slave unit are each provided with a transmitting circuit and a receiving circuit, and the transmitting circuit modulates a carrier wave with a calling signal, dial signal, or transmitting/receiving signal and transmits the radio wave, and the receiving circuit receives the carrier wave. Communication is carried out by demodulating the signal into the original signal, but the frequencies of the carrier waves transmitted from each slave device are the same. In such a device, if one handset uses another handset to transmit a carrier wave during communication, the same frequency (co-cbannel)
Interference occurs and prevents normal telephone communication.

(ハ)問題点を解決するための手段 本発明はそこで一子機が使用中であるとき、他の子機に
そのことを報知し、混信が起るのを防止した無線電話機
の報知装置を提供するものであ・る。
(c) Means for solving the problem The present invention provides a notification device for a radio telephone that notifies other handsets when one handset is in use and prevents interference from occurring. This is what we provide.

に) 実施イクリ 以下本発明を図面に従って説明をすると、第1図におい
て(1)は宵1話回線(Ll)(Lt)  に接続され
た親機で、電、諸口m<r、υ(L2)との結合を行う
ためのインターフェイス部(2)、電話回線(Ll)(
L2)  よりの呼出し信号及び受話信号にて搬送波を
変調する送信回路(3)、子444 (5a)(5b)
・・・より送信された電、波を復調し、ダイヤル信号及
び受話信号を抽出する受信回路(4)と、前記電波を送
受信するアンテナ(6)(7)とを有する。前記子機(
5a)(5b)・・・は親機(1)と同様に送信回路(
6)、受信回路(9)及びアンテナQQI(II)を有
する。前記イタ1機(1)より子機(5a)(5b)・
・・に送信される搬送波の周波数はf、で、又各子機(
5a)(5b)・・・より親機(1)に送信される搬送
波の周波数f2は全て同一周波数である。
The present invention will be explained below with reference to the drawings. In Fig. 1, (1) is a base unit connected to the evening 1st talk line (Ll) (Lt), ), an interface section (2) for coupling with the telephone line (Ll) (
L2) A transmitting circuit (3) that modulates the carrier wave with a calling signal and a receiving signal from the terminal 444 (5a) (5b)
. . . It has a receiving circuit (4) that demodulates the radio waves transmitted from the radio waves and extracts dial signals and reception signals, and antennas (6) and (7) that transmit and receive the radio waves. The handset (
5a) (5b)... are transmitter circuits (similar to the base unit (1)).
6), a receiving circuit (9) and an antenna QQI (II). Child units (5a) (5b) from the above-mentioned Ita 1 unit (1).
The frequency of the carrier wave transmitted to ... is f, and each slave device (
5a) (5b)... The frequencies f2 of the carrier waves transmitted to the parent device (1) are all the same frequency.

第2図は前記子機(5a)(5b)・・・のブロック図
を示したもので、送信回路(5)はマイクロホン021
.該マイクロホン02)よりの音声信号を増幅する低周
波増幅回路(131,搬送波発振回路Q4)で発生され
た搬送波を前記音声信号でFM変調するFM変調回路(
15)、該FM変調回路(1h1に接続された逓倍回路
(]61、及び高周波出力回路aηよりなり、さらにI
”M変調回路(15)にはダイヤル発振部(国からのダ
イヤル信号が加えられる。又受信回路(旬は高周波増幅
回路+11. 該高周波増幅回路01よりの畠周波信号
と局部発振信号(21J)よりの局部発振信号を混合し
、中間周波信号を発生する混合回路G101前記中間周
波信号を増幅する中間周波増幅回路(22)、前記増幅
された中間周波G4号より受話信号及び呼出し信号を検
出する検波回路C2(至)、前記検波回路(231に接
続された低周波増幅回路c24)、該低周波増幅回路シ
4)中の呼出し信号を増幅する選択増幅回路c7載呼出
し信号にて増幅度が制御される音声出力回路(26)、
スピーカ(2’/J及び、前記呼出し信号を増幅する音
声出力コントロール回路!2+(とまりなる。さらに子
機(5a)(5b)・・・には受信回路(」の中間周波
(i号検出回路tzi+よりの信号と前記音声出力コン
トロール回路(層よりの呼出し信号とで制御される回線
監視回路C仰及び該回線監視回路(至)よりの出力信号
で制御されるトランジスタ((lO及び発光ダイオード
01;よりなる報知回路021.を備える、前記回線監
視回路(イ))はノア回路缶とインバータG・1)とよ
りなる。
FIG. 2 shows a block diagram of the handsets (5a), (5b), etc., and the transmitting circuit (5) is connected to the microphone 021.
.. an FM modulation circuit (131, carrier wave oscillation circuit Q4) that amplifies the voice signal from the microphone 02) and FM-modulates a carrier wave generated by the voice signal;
15), the FM modulation circuit (consists of a multiplier circuit (]61 connected to 1h1, and a high frequency output circuit aη, and further includes an I
The M modulation circuit (15) receives a dial oscillator (a dial signal from the country) and a receiver circuit (a high frequency amplifier circuit + 11). a mixing circuit G101 that mixes local oscillation signals from the above and generates an intermediate frequency signal, an intermediate frequency amplification circuit (22) that amplifies the intermediate frequency signal, and detects a receiving signal and a calling signal from the amplified intermediate frequency signal G4; The amplification degree is determined by the detection circuit C2 (to), the detection circuit (low frequency amplifier circuit c24 connected to 231), and the call signal in the selective amplifier circuit c7 that amplifies the call signal in the low frequency amplifier circuit C4). a controlled audio output circuit (26);
The speaker (2'/J and the audio output control circuit that amplifies the calling signal!2+ The line monitoring circuit C is controlled by the signal from the tzi+ and the calling signal from the audio output control circuit (layer), and the transistor ((lO and light emitting diode 01) is controlled by the output signal from the line monitoring circuit (to). The line monitoring circuit (a) includes a notification circuit 021 consisting of a Noah circuit and an inverter G.1).

次に本発明の動作について説明する2、待機状態ではフ
ックスイッチ0ωC351は図示の状態にあり、受4M
回路(」のみが動作状態にある。断る状態で、市1話回
線(Ll)(L2)  を介して相手方からの呼出し信
号が親機(1)に供給されると、その呼出し信号は親機
(1)の送信回路(3)で搬送波を変調し、搬送波f。
Next, the operation of the present invention will be explained 2. In the standby state, the hook switch 0ωC351 is in the state shown in the figure, and the hook switch 0ωC351 is in the state shown in the figure.
Only the circuit (") is in operation. When a call signal from the other party is supplied to the base unit (1) via the city 1 line (Ll) (L2) in the declining state, the call signal is sent to the base unit. The transmitting circuit (3) in (1) modulates the carrier wave, and generates the carrier wave f.

とともに送信される。前HC)搬送波f1  は子機(
5a)(5)))・・・の受信回路恨)に加えられ、高
周波増幅回路0市で増幅される。その徒混合回路(2]
)で局部発振信号と混合され中間周波信号に変換され、
中間周波増幅回路(2■で増幅され、さらに検波回路(
ハ)で音声信号にされ、その音声信号は低周波増幅回路
c24で増幅された後、音声出力回路12eを介してス
ピーカ(27)に供給されスピーカQυを駆動する。そ
れによって子機(5a)(5b)・・・の保持者は電話
がかかってきたことを知る。然る後フックスイッチ01
卸ωの接片(35a)(35a)を接点(35b)(3
51))より接点(35c)(35c)に切換えると、
送信回路(川も動作状態にされる。従ってマイクロホン
02)に向って話しを行うと、その話し声は電気信号に
変換され低周波増幅回路(13)で増幅され、搬送波発
振回路(14)で発振された搬送波f2 をFM変調回
路011)でFM変調し、逓倍回路(L[i)で逓倍し
、高周波出力回路aηを通しアンテナ叫より送信する。
Sent with The carrier wave f1 (previous HC) is the slave unit (
5a) (5))) ... is added to the receiving circuit) and amplified by the high frequency amplification circuit 0. The mixed circuit (2)
) is mixed with the local oscillation signal and converted to an intermediate frequency signal,
The intermediate frequency amplification circuit (2) is amplified, and the detection circuit (
C), the audio signal is amplified by the low frequency amplifier circuit c24, and then supplied to the speaker (27) via the audio output circuit 12e to drive the speaker Qυ. As a result, the holders of the handsets (5a, 5b), etc. know that there is a call. After that, hook switch 01
Connect the contact piece (35a) (35a) of wholesale ω to the contact point (35b) (3
51)) to contact (35c) (35c),
When you speak into the transmitting circuit (the river is also activated. Therefore, microphone 02), the speaking voice is converted into an electrical signal, amplified by the low frequency amplifier circuit (13), and oscillated by the carrier wave oscillation circuit (14). The resulting carrier wave f2 is FM modulated by an FM modulation circuit 011), multiplied by a multiplier circuit (L[i), and transmitted from an antenna through a high frequency output circuit aη.

送信された搬送波 f、は親機(1)に受信され、その
受信回路(4)で周波数変換、検波等によってもとの音
声信号にされ、増幅後型諸口1%! (LIXL2) 
 を介し相手方に伝送される。このようにして電話回線
に接続された親機に遠隔地から無線で電話することがで
きる。
The transmitted carrier wave f is received by the base unit (1), and converted into the original audio signal by frequency conversion, detection, etc. in the receiving circuit (4), and after amplification, the original audio signal is 1%! (LIXL2)
is transmitted to the other party via. In this way, it is possible to make a wireless call from a remote location to a base unit connected to a telephone line.

前記は相手方から呼出し信号が送信された場合について
説明したが、子機から相手方に電話することもできる。
Although the case where a calling signal is transmitted from the other party has been described above, it is also possible to call the other party from the handset.

その場合は先ずフックスイッチ(1’、+101の接片
(35a)(35a)を接点(35c)(35c)に切
換え、送話回路(6)を動作状態にする。そしてダイヤ
ル発振部08)よりダイヤル信号を送ると、I” M変
調回路(I5)で搬送波をFM変調し、前述と同様増幅
等された後アンテナ(10)より送信される。その搬送
波は親機(1)で音声信号に再生されダイヤル信号を抽
出し、電話回路(LIXL2)  を介して相手方に伝
達される。
In that case, first switch the contacts (35a) (35a) of the hook switch (1', +101) to the contacts (35c) (35c) to put the transmitter circuit (6) into operation. When a dial signal is sent, the carrier wave is FM modulated in the I''M modulation circuit (I5), and after being amplified as described above, it is transmitted from the antenna (10).The carrier wave is converted into an audio signal by the base unit (1). The reproduced dial signal is extracted and transmitted to the other party via the telephone circuit (LIXL2).

ところで、1つの子機を使って交信しているとき、他の
子機の送信回路(6)を動作状態にすると、搬送波f、
が発振されすでに交信している子機妃妨害を与えること
になる。そこで−子機を使用し親機と交信しているとき
、他の子機にそのことを知らせるようにしている。即ち
子機の受信回路(切の中間周波信号の出力は呼出し信号
及び受話信号のいずれかが受信されているときローレベ
ルと/、4つ、又音声出力コントロール回路(28)の
出力は呼出し信号があるときのみローレベルになるよう
にしている。今受信回路(切に呼出し16号も受話信号
も受信されていない待機状態にあるとき、中間周波&号
検出回路いり及び音声コントロール回路(2R)の出力
はイスれもハイレベルであるので、回線監視回路06)
の出力はローレベルであり、トランジスタC3(1)は
オフされ発光ダイオード(31)は発光されない。相手
方からの呼出し信号が受信されると、中間周波信号検出
回路C稍及び音声出力コントロール回路(28)の出力
はともにローレベルにt「るが、回線監視回路α・)の
出力は依然ローレベルであるので、このときも発光ダイ
オード61)は発光されない。次に一子機を動作させ交
信を始めると、麹機(1)から送信される搬送波f、は
受話信号で変調されているので、中間周波信号検出回路
Q1の出力はローレベルに保持されるが、音声出力コン
トロール回路(281の出力は呼出し信号がないため、
ハイレベルとなる。従って回線監視回路(ト)の出力は
ハイレベルに転換されろ。
By the way, when communicating using one handset, if the transmitting circuit (6) of another handset is activated, the carrier wave f,
oscillates and interferes with the handset that is already communicating. Therefore, when a handset is used to communicate with a base unit, other handsets are notified of this fact. That is, the output of the intermediate frequency signal of the receiver circuit (off) is low level when either the calling signal or the receiving signal is received, and the output of the audio output control circuit (28) is the calling signal. When the current receiving circuit is in a standby state where neither the call number 16 nor the receiving signal is received, the intermediate frequency signal detection circuit and voice control circuit (2R) Since the output of is at high level, the line monitoring circuit 06)
The output of the transistor C3 (1) is turned off and the light emitting diode (31) does not emit light. When a calling signal from the other party is received, the outputs of the intermediate frequency signal detection circuit C and the audio output control circuit (28) both go to low level, but the output of the line monitoring circuit α remains at low level. Therefore, the light emitting diode 61) does not emit light at this time either.Next, when the first child unit is operated and communication begins, the carrier wave f transmitted from the koji machine (1) is modulated by the reception signal, so The output of the intermediate frequency signal detection circuit Q1 is held at a low level, but the output of the audio output control circuit (281) does not have a calling signal, so
Becomes a high level. Therefore, the output of the line monitoring circuit (g) should be switched to high level.

するとトランジスタ弼をオンし、それにより発光ダイオ
ードC(1)を発光させ子機が交信中であることを報知
する。
Then, the transistor 2 is turned on, causing the light-emitting diode C(1) to emit light to notify that the slave device is communicating.

餠)効果 本発明の無線電話機の報知回路はト述した如く、親機と
複数の子機とを無線で交信するものにおいて、−子機が
親機と交信中、子機の報知回路を動作させるようにした
ので、他の子機が交信中であることが一目で分り、誤っ
て送信回路を動作させ混信を起すということがない。
餠)Effect As mentioned above, the notification circuit of the wireless telephone of the present invention is one that communicates wirelessly between a base unit and a plurality of slave units, and when the slave unit is communicating with the base unit, the notification circuit of the slave unit is operated. As a result, it can be seen at a glance that other slave units are communicating, and there is no possibility of erroneously activating the transmitter circuit and causing interference.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の無線電話様の全体のブロック図、第2
図は本発明の要部回路図である。 (9)・・・受信回路、 C281・・・音声出力コン
トロール回路、 (29)・・・中間周波信号検出回路
、 (’(+1・・・発光ダイオード、 (3(9・・
・回線監視回路。
Fig. 1 is an overall block diagram of a wireless telephone according to the present invention;
The figure is a circuit diagram of the main part of the present invention. (9)...Reception circuit, C281...Audio output control circuit, (29)...Intermediate frequency signal detection circuit, ('(+1...Light emitting diode, (3(9...)
・Line monitoring circuit.

Claims (1)

【特許請求の範囲】[Claims] (1)電話回線罠接続された親機及び、該親機と離間し
て存在する複数の子機とに夫々送信回路及び受信回路を
設け、送信回路より呼出し信号又は受話信号等の音声信
号で変調した搬送波を送信し、受信回路で前記搬送波を
復調し音声信号を再生するものにおいて、前記子機の受
信回路に中間周波信号を検出する中間周波信号検出回路
と、呼出し信号を選択増幅する音声出力コントロール回
路と、前記中間周波信号検出回路、及び音声出力コノト
ロール回路との出力信号を監視する回線監視回路と、親
機と他の子機とが交信時に前記回線監視回路の出力信号
にて動作される報知回路とを設けた無線電話機の報知装
置。
(1) A transmitting circuit and a receiving circuit are provided for the base unit connected to the telephone line trap and the multiple slave units located apart from the base unit, respectively, and the transmitting circuit transmits audio signals such as a calling signal or an answering signal. In the apparatus for transmitting a modulated carrier wave and demodulating the carrier wave in a receiving circuit to reproduce an audio signal, the receiving circuit of the handset includes an intermediate frequency signal detection circuit for detecting an intermediate frequency signal, and an audio signal for selectively amplifying a calling signal. an output control circuit, a line monitoring circuit that monitors the output signals of the intermediate frequency signal detection circuit, and the audio output control circuit; and a line monitoring circuit that operates based on the output signal of the line monitoring circuit when the base unit and other slave units communicate. A notification device for a radio telephone equipped with a notification circuit.
JP57148666A 1982-08-26 1982-08-26 Annunciator of radio telephone set Granted JPS5937744A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57148666A JPS5937744A (en) 1982-08-26 1982-08-26 Annunciator of radio telephone set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57148666A JPS5937744A (en) 1982-08-26 1982-08-26 Annunciator of radio telephone set

Publications (2)

Publication Number Publication Date
JPS5937744A true JPS5937744A (en) 1984-03-01
JPH029494B2 JPH029494B2 (en) 1990-03-02

Family

ID=15457898

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57148666A Granted JPS5937744A (en) 1982-08-26 1982-08-26 Annunciator of radio telephone set

Country Status (1)

Country Link
JP (1) JPS5937744A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6335341U (en) * 1986-08-26 1988-03-07

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04126670U (en) * 1991-05-10 1992-11-18 村田機械株式会社 connector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6335341U (en) * 1986-08-26 1988-03-07

Also Published As

Publication number Publication date
JPH029494B2 (en) 1990-03-02

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