JPS60194628A - Radio telephone set - Google Patents

Radio telephone set

Info

Publication number
JPS60194628A
JPS60194628A JP59050515A JP5051584A JPS60194628A JP S60194628 A JPS60194628 A JP S60194628A JP 59050515 A JP59050515 A JP 59050515A JP 5051584 A JP5051584 A JP 5051584A JP S60194628 A JPS60194628 A JP S60194628A
Authority
JP
Japan
Prior art keywords
circuit
signal
slave
handset
receiving 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.)
Pending
Application number
JP59050515A
Other languages
Japanese (ja)
Inventor
Nobuyuki Takahashi
信幸 高橋
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 JP59050515A priority Critical patent/JPS60194628A/en
Priority to US06/711,300 priority patent/US4741019A/en
Publication of JPS60194628A publication Critical patent/JPS60194628A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/72Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/725Cordless telephones
    • H04M1/72502Cordless telephones with one base station connected to a single line
    • H04M1/72505Radio link set-up procedures
    • H04M1/72513On hold, intercom or transfer communication modes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/72Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/725Cordless telephones
    • H04M1/72502Cordless telephones with one base station connected to a single line
    • H04M1/72505Radio link set-up procedures

Landscapes

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

Abstract

PURPOSE:To monitor what state slave equipment is kept all the time by providing master equipment with a monitoring receiving circuit which is scanned so that the reception frequency is made coincident with the transmission frequency of each slave equipment successively, and receiving an information signal transmitted from each slave equipment by the monitoring receiving circuit. CONSTITUTION:The frequency division ratio of the program divider of a PLL41 is set with the signal of a control circuit 40 at each slave equipment, the reception frequency of a receiving circuit 31 and the carrier signal transmitted by a transmitting circuit 37 are set to characteristic values of each slave equipment, and the carrier signal is modulated with an information signal generated according to the state of the slave equipment. The master equipment 1, on the other hand, generates a code signal varying in sequence by the 1st DATA part 19 to vary the frequency division ratio of the program divider of the PLL7, so the monitoring receiving circuit 4 is tuned to the frequency of carrier signals of respective slave equipments successively. A received carrier signal is detected by the 1st detecting circuit 9 and information signals P1 and P2 are detected by the 2nd and the 3rd detecting circuits 10 and 11 and applied to a control circuit 3. The control circuit 13 monitors the states of all slave equipments all the time.

Description

【発明の詳細な説明】 (イ)産業上の利用分野 本発明は子機の状態を常時監視することができるように
した無線電話機に関する。
DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a radio telephone capable of constantly monitoring the status of a handset.

(ロ)従来技術 電話回線に接続された親機と、その親機と無線で交信し
電話通話を可能にした無線電話機は例えば実公昭47−
7649号公報に記載されている。
(b) Prior art Wireless telephones that made it possible to make phone calls by communicating with a base unit connected to a telephone line and the base unit wirelessly were, for example,
It is described in Publication No. 7649.

斯る無線電話機において送受信周波数を夫々異にする子
機が多数ある場合忙、親機が呼出し信号を受けたとき前
記子機の一つにその呼出し信号を転送する必要があるが
、その場合に待機状態にある子機に呼出し信号を転送し
なければならず、若し知らすに不動作されている子機に
呼出し信号を転送したときにはいつまでたっても通話が
開始されない。又最近無線電話機の機能の増加が望まれ
、−子機と他子機間とで内部通話が出来るようにしたも
のがある。この場合に子機間で自由に内部通話を行うと
混乱を生じるので、親機の許可をめてから内部通話出来
るようKすることがのぞましい。そのためには子機が内
部通話を希望しているか否か常時親機はチェックしてい
る必要がある。
When such a radio telephone has a large number of handsets with different transmitting and receiving frequencies, when the base unit receives a calling signal, it is necessary to transfer the calling signal to one of the handsets. A call signal must be transferred to a handset that is in a standby state, and if a call signal is transferred to a handset that is reportedly inactive, a call will not be started for any length of time. Recently, there has been a desire to increase the functionality of wireless telephones, and some are designed to allow internal calls between one handset and another handset. In this case, if internal calls are made freely between handsets, confusion will occur, so it is desirable to obtain permission from the base unit before pressing K to allow internal calls. To do this, the base unit must constantly check whether the slave unit wishes to make an internal call.

(ハ)発明の目的 本発明はそこで親機に受信周波数が各子機の送信周波数
に順次一致されるようにスキャンされるモニター用受信
回路を設け、各子機から送信される情報信号を前記モニ
ター用受信回路にて受信し、子機がどのような状態圧あ
るか常に監視出来るようにすることを目的とする。
(C) Purpose of the Invention The present invention provides a monitoring receiving circuit in the base unit that scans the reception frequency so that it sequentially matches the transmission frequency of each slave unit, and transmits the information signal transmitted from each slave unit to the The purpose is to be able to constantly monitor the state pressure of the handset by receiving it with a monitor receiving circuit.

に)発明の構成 本発明は電話回線に接続された親機と、夫々異なる送受
信周波数を有し前記親機と無線で通話可能にした複数の
子機を有するものにおいて、親機に各子機の送信周波数
に順次同調されるようにスキャンされるモニター用受信
回路、該モニター用受信回路で復調された子機の状態を
示す情報信号を検出する検出回路及び該検出回路で検出
された情報信号を識別するコントロール回路とを設け、
各子機に前記情報信号発生回路を設け、前記各子機の情
報信号発生回路から発生される情報信号を親機のモニタ
ー用受信回路で常時監視し、各子機の状態を識別するこ
とを特徴とする無線電話機に関する。
B) Structure of the Invention The present invention provides a device having a base unit connected to a telephone line and a plurality of slave units each having a different transmitting and receiving frequency and capable of communicating wirelessly with the base unit. a monitoring receiving circuit that is scanned to be sequentially tuned to the transmission frequency of the monitor, a detection circuit that detects an information signal indicating the status of the handset demodulated by the monitoring receiving circuit, and an information signal detected by the detection circuit. A control circuit is provided to identify the
Each slave unit is provided with the information signal generation circuit, and the information signal generated from the information signal generation circuit of each slave unit is constantly monitored by the monitor receiving circuit of the base unit to identify the status of each slave unit. This invention relates to a characteristic wireless telephone.

(ホ)実施例 以下本発明の無線電話機を図面に従って説明すると、(
Ωは電話回線(2)K接続された親機で、コントロール
回路(3)、モニター用受信回路(4)、通話用受信回
路(5)及び通話用送信回路(6)を有する。前記モニ
ター用受信回路(4)はコントロール回路(3)から出
力され周期的に変化されるコード信号り、、 D、。
(e) Examples The following describes the wireless telephone of the present invention according to the drawings.
Ω is a base unit connected to a telephone line (2)K, and has a control circuit (3), a monitor receiving circuit (4), a telephone receiving circuit (5), and a telephone transmitting circuit (6). The monitor receiving circuit (4) receives a code signal outputted from the control circuit (3) and changed periodically.

DI、 D4によりてP L L (7)のプログラム
ディバイダーの分局比が変化されるのに基づいて受信周
波数が順次変化され、後述する各子機からの情報信号P
r、Ptをスキャン受信し、又通話用受信回路(5)及
び通話用送信回路(6)はコントロール回路(3)より
指定されたコード信号DI、 Dt、 Ds−D4を発
生させ、PLL(8)のプログラムディバイダーの分局
比を変化し、希望する一子機と交信できるように送受信
周波数が設定される。前記親機(刀にはさらにモニター
用受信回路(4)より出力される各子機の搬送波信号、
及び情報信号を検出しコントロール回路(3)に加える
第1、第2、第3検出回路(9)(1(IH、コントロ
ール回路(3)よりのコントロール信号に基づいて呼出
し信号を発振する呼出し信号発振器aし各種符号信号を
発振する符号信号発振器Q31と、通話用受信回路(5
)及び通話用送信回路(6)と電話回線(2)とを結合
するハイブリットトランスαaとそれを閉結するリレー
a四とを有する。又コントロール回路(3)は第3図に
示すように、マイクロコンビエータで形成されており、
供給される各信号を処理し必要とする信号を出力する中
央処理ユニッH6)、前記中央処理ユニットα6)Vc
定められ手順に従って信号を供給するROM(17)、
中央処理ユニット(161よりの信号を随時記録し、そ
して出力するuAMQ飄中央処理ユニッH6)よりの信
号にもとづいて前記コード信号D+、Dt−Da、Da
を発生する第1、第2DATAsQ9(イ)、同じく中
央処理ユニッ)(161にて制御され各種信号を発生す
る符号信号制御部(23、リレー信号制御部(2)及び
呼出し信号制御部(財)を備える。前記データ信号D+
、Dt、 Da、 D4は第4図に示すように0. 0
. 0. 1から1. 0. 1.0まで周期的に変化
し各子機の−の送受信周波数にされるようにしている。
Based on the change in the division ratio of the program divider of PLL (7) by DI and D4, the receiving frequency is sequentially changed, and the information signal P from each child unit, which will be described later, is changed.
r, Pt are scanned and received, and the call receiving circuit (5) and the call transmitting circuit (6) generate code signals DI, Dt, and Ds-D4 specified by the control circuit (3), and the PLL (8 ) by changing the division ratio of the program divider, the transmitting/receiving frequency is set so that communication can be performed with the desired single slave device. The base unit (sword) further includes a carrier wave signal of each slave unit output from a monitor receiving circuit (4),
and first, second, and third detection circuits (9) (1 (IH), which detect information signals and apply them to the control circuit (3); a calling signal that oscillates a calling signal based on a control signal from the control circuit (3); Oscillator a: A code signal oscillator Q31 that oscillates various code signals, and a telephone reception circuit (5
), a hybrid transformer αa that connects the communication transmission circuit (6) and the telephone line (2), and a relay a4 that connects the hybrid transformer αa. In addition, the control circuit (3) is formed of a micro combinator, as shown in Figure 3.
a central processing unit H6) that processes each supplied signal and outputs a necessary signal; and the central processing unit α6) Vc.
ROM (17) for supplying signals according to defined procedures;
The code signals D+, Dt-Da, Da
The first and second DATAs Q9 (A), which are also central processing units (161), generate code signal control units (23, relay signal control units (2), and call signal control units (2), which generate various signals). The data signal D+
, Dt, Da, D4 are 0.0 as shown in FIG. 0
.. 0. 1 to 1. 0. The frequency is changed periodically up to 1.0, so that it becomes the - transmission/reception frequency of each slave unit.

第2図は夫々送受信周波を異にする複数ある子機の一つ
のブロック図で、アンテナ−に接続された受信回路0υ
、該受信回路01)で受信された信号を増幅する増幅回
路も3、マイクロホン(至)よりの音声信号を増幅する
増幅回路(財)、該増幅回路(財)で増幅された音声信
号及び符号信号発生回路Cl51からの符号信号をアン
テナ(至)より送信するための送信回路G7)と、キー
ボード(至)又は識別信号を検出する検出回路OIより
の信号にて制御される制御回路器、及び前記送信回路+
37+及び受信回路01)の送受信周波数を設定するP
LL(ADを備える。前記符号信号発生回路(至)は制
御回路(41よりの制御信号で制御され、そのときの子
機の状態に応じて第5図に示すような情報信号P、、 
P、を発生する。ここで待機状態とは受信回路0υは動
作状態にあるが、送信回路0nはオフされている状態で
、子機の電源は持ち運ぶため電池を用いているので電力
を消費する送信回路(371は不使用時には電源をオフ
にしており、又内部通話とは一子機から信子機へ交信す
ることを意味し、さら忙転送とは親機から一子機に交信
しているのを信子機に送ることを意味する。
Figure 2 is a block diagram of one of the multiple handsets, each with a different transmitting and receiving frequency, and the receiving circuit 0υ connected to the antenna.
, an amplifier circuit that amplifies the signal received by the receiving circuit 01), an amplifier circuit that amplifies the audio signal from the microphone (to), an audio signal amplified by the amplifier circuit, and a code. a transmission circuit G7) for transmitting the code signal from the signal generation circuit Cl51 from the antenna (to); a control circuit controlled by a signal from the keyboard (to) or the detection circuit OI for detecting the identification signal; Said transmitting circuit +
P to set the transmitting and receiving frequency of 37+ and receiving circuit 01)
LL (includes an AD). The code signal generation circuit (to) is controlled by a control signal from a control circuit (41), and generates information signals P, , , etc. as shown in FIG.
P, is generated. Here, the standby state means that the receiving circuit 0υ is in operation, but the transmitting circuit 0n is off, and the transmitting circuit (371 is not active) consumes power because the handset uses a battery to power the handset. When in use, the power is turned off, and an internal call means communication from one slave unit to a slave unit, and a busy transfer means that a communication from the base unit to the first slave unit is sent to the slave unit. It means that.

次に本発明の無線電話機の動作について説明する。Next, the operation of the wireless telephone according to the present invention will be explained.

各子機では制御回路(4(Iの信号によってPLL(4
υのプログラムディバイダーの分局比が予め定められた
値に設定され、受信回路ell)の受信周波数及び送信
回路c171より送信される搬送波信号の周波数は夫々
子機ごとによって定められた値にされ、且つ前記搬送波
信号は送信回路C37)で子機の状態によって発生され
る前記情報信号で変調され送信する。
Each slave unit uses a PLL (4) control circuit (4 (I) signal).
The division ratio of the program divider of υ is set to a predetermined value, the reception frequency of the reception circuit ell) and the frequency of the carrier signal transmitted from the transmission circuit c171 are set to values determined for each slave device, and The carrier wave signal is modulated by the information signal generated according to the status of the handset in a transmitting circuit C37) and is transmitted.

一方親機(刀では前述した如く、第1DATA部員から
順次変化するコード信号が発生されPLL(7)のプロ
グラムディバイダーの分局比を変えているので、モニタ
ー用受信回路(4)は第1子機の搬送波信号の周波数か
ら、第2、第3・・・子機の搬送波信号の周波数にと順
次同調されるように変えられる。従って各子機の送信回
路(37)が動作され、アンテナ(至)より搬送波信号
が送信されているのなら、その搬送波信号は順次親機(
刀のアンテナ(ハ)よりそ二ター受信回路(4)K受信
される。前記受信された搬送波信号は第1検出回路(9
)で検出され、又第2、第3検出回路QIQI)で情報
信号pm、 p、が検出されコントロール回路(3)に
加えられる。前記コントロール回路(3)では第1検出
回路(9)よりの搬送波信号と第2、第3検出回路(1
0)(olよりの情報信号P、、 P、はゲート回路C
21)でゲートされ中央処理ユニット(2)に加えられ
る。ここで情報信号は子機からの送信がなくても0又は
1の値をとるので、正しいデータとするため前記ゲート
回路ff1l)で情報信号と搬送波信号とをアンドゲー
トしている。前記コントロール回路(3)のRAM(l
には第6図に示すようなステータステーブルが設定され
ており、前記中央処理ユニツHf9から順次供給される
情報信号P、、 P、を前記ステータステーブルに常時
記録し書き換える。
On the other hand, in the case of the master unit (Kataru), as mentioned above, a code signal that changes sequentially is generated from the first DATA member and changes the division ratio of the program divider of the PLL (7), so the monitor receiving circuit (4) is connected to the first slave unit. The frequency of the carrier wave signal of the second, third, and so on handsets is sequentially tuned to the frequency of the carrier wave signal of the handset.Therefore, the transmitting circuit (37) of each handset is operated, and the antenna (from ), the carrier signal is transmitted sequentially to the base unit (
The signal is received from the sword's antenna (c) by the sword's receiving circuit (4). The received carrier wave signal is transmitted to a first detection circuit (9).
), and information signals pm, p, are detected by the second and third detection circuits (QIQI) and applied to the control circuit (3). In the control circuit (3), the carrier signal from the first detection circuit (9) and the second and third detection circuits (1
0) (Information signal P from ol, P is gate circuit C
21) and added to the central processing unit (2). Here, since the information signal takes a value of 0 or 1 even if there is no transmission from the slave device, the information signal and the carrier wave signal are AND gated in the gate circuit ff1l) to obtain correct data. RAM (l) of the control circuit (3)
A status table as shown in FIG. 6 is set in , and the information signals P, , P, sequentially supplied from the central processing unit Hf9 are constantly recorded and rewritten in the status table.

ここで第1DATA、部αηから発生されt前記コード
信号を順廻する様に設定することにより全ての子機の状
態が常時監視できる。従って若し電話回線(2)を経て
相手方よりの呼出し信号が到来したとき、呼出し信号検
出回路(イ)で前記呼出し信号を検出シコントロール回
路(3に加える。コントロール回路(3)では前記RA
 M(lのステータステーブルより0,0にされている
子機をチェノjする。若し第1子機が0,0であるとき
キーボード(ハ)を操作し第2DATAll(2Iより
のコード信号り、、 D、、 D、。
By setting the code signal generated from the first DATA section αη to rotate in sequence, the status of all slave units can be constantly monitored. Therefore, when a calling signal from the other party arrives via the telephone line (2), the calling signal detection circuit (a) applies the calling signal to the detection control circuit (3).
Check the handset that is set to 0,0 from the status table of M(l).If the first handset is set to 0,0, operate the keyboard (c) and change the code signal from 2DATAll (2I). ,, D,, D,.

D、をO,O,0,1にし、通信用受信回路(5)及び
通信用送信回路(6)の送受信周波数を第1子機の送受
信周波数に一致させる。さらに符号信号制御部(221
よりの信号で符号信号発振回路Q31を動作させ、予め
定められた第1子機を識別するための識別信号を発生さ
せ、前記通話用送信回路(6)に加え、搬送波信号を変
調しアンテナ(2樟より送信する。第1子機では受信回
路Gυが不使用状態であるときは何等反応しないが、若
し待機状態にあるなら受信され、受信された信号の中か
ら識別信号を検出回路CIIKて検出し制御回路(4G
に加える。制御回路0Iでは前記識別信号が加えられる
と、あらかじめキーボード(至)で設定された識別信号
と一致することを検出した上で、送信回路Gηを一時的
に動作させる。
D is set to O, O, 0, 1, and the transmission and reception frequencies of the communication receiving circuit (5) and the communication transmitting circuit (6) are made to match the transmission and reception frequency of the first slave device. Furthermore, the code signal control unit (221
The code signal oscillation circuit Q31 is operated with the signal from the above, and an identification signal for identifying a predetermined first handset is generated. The first slave unit does not react at all when the receiving circuit Gυ is not in use, but if it is in the standby state, it is received, and the detection circuit CIIK detects the identification signal from the received signals. detection control circuit (4G
Add to. When the identification signal is applied to the control circuit 0I, it detects that it matches the identification signal set in advance on the keyboard, and then temporarily operates the transmission circuit Gη.

このとき待機状態にあるので符号信号発生回路(至)か
ら発生される情報信号P、、 P、は0.OKされ、送
信回路Gηより送信される搬送波信号を変調する。
At this time, since it is in a standby state, the information signals P,, P, generated from the code signal generation circuit (to) are 0. If OK is received, the carrier wave signal transmitted from the transmitting circuit Gη is modulated.

前記搬送波信号はモニター用受信回路゛(4)で受信さ
れ第1、第2、第3検出回路(9)(11(111より
搬送波信号と情報信号P+、Ptを検出しコントロール
回路(3)に加える。前記情報信号Pr−PIは0,0
であることからRAMaIでもって第1子機が待機状態
にあるのを識別し、呼出し信号制御部(財)を制御し呼
出し信号発振回路a榎を動作させ、呼出し信号を発振さ
せる。その呼出し信号は通信用送信回路(6)で搬送波
信号を変調しアンテナ翰より送信される。第1子機の受
信回路Oυでは再び親機(刀からの搬送波信号を受信し
呼出し信号を復調する。その呼出し信号は増幅回路04
で増幅されスピーカ(4渇を駆動するので、第1子機の
所有者は電話がかかってきたのを知ることができる。そ
こで第1子機の所有者が切換スイッチを操作し待機状態
から通話状態にすると送信回路−が動作され、情報信号
P、、 PIで搬送波信号を変調し親機(刀に送信され
る。親機(刀ではモニター用受信回路(4)にて前記第
1子機の情報信号P、、 P、が復調され第1、第2、
第3検出回路(9)Ql(lυで検出され、コントロー
ル回路(3)に加えられ、核コントロール回路(3)か
らリレー制御信号を発生しリレーα暖を励磁し電話回線
を閉結し通話状態にし前記情報信号PI、Ptがとだえ
るまでこれを保持する。第1子機の所有者の音声信号は
通信用受信回路(5)で受信され復調された音声信号は
ハイブリットトランスα滲を通して電話回線に供給され
るとともに、相手方の音声信号は前記ハイブリットトラ
ンス(4)を通し通信用送信回路(6)に送られ、この
信号で搬送波信号を変調し子機に送信する。
The carrier wave signal is received by the monitor receiving circuit (4), and the carrier wave signal and information signals P+ and Pt are detected by the first, second, and third detection circuits (9) (11 (111), and sent to the control circuit (3). The information signal Pr-PI is 0,0.
Therefore, it is identified by RAMaI that the first handset is in a standby state, and the calling signal control unit is controlled to operate the calling signal oscillation circuit a to oscillate the calling signal. The calling signal modulates a carrier wave signal in a communication transmitting circuit (6) and is transmitted from an antenna. The receiving circuit Oυ of the first slave device receives the carrier wave signal from the parent device (sword) again and demodulates the calling signal.The calling signal is sent to the amplifier circuit 04.
Since the signal is amplified by the speaker and the speaker (4) is driven, the owner of the first handset can know that there is an incoming call.Therefore, the owner of the first handset operates the changeover switch and makes a call from standby mode. When it is in the state, the transmitting circuit is activated, modulating the carrier signal with the information signals P, PI, and transmitting it to the master unit (Kataru).In the master unit (Kataru, the monitor receiving circuit (4) The information signals P,, P, are demodulated into the first, second,
The third detection circuit (9) is detected by Ql (lυ), is added to the control circuit (3), generates a relay control signal from the nuclear control circuit (3), excites the relay α, and closes the telephone line to make a call. The information signals PI and Pt are held until they stop.The voice signal of the owner of the first handset is received by the communication receiving circuit (5), and the demodulated voice signal is sent to the telephone through the hybrid transformer α. At the same time as being supplied to the line, the voice signal of the other party is sent to the communication transmitting circuit (6) through the hybrid transformer (4), which modulates a carrier signal and transmits it to the handset.

このようにして子機から親機(υを通して相手方と電話
通話できる。
In this way, you can make phone calls from the slave unit to the other party through the base unit (υ).

又モニター用受信回路(4)にて各子機からの信号を受
信しモニターした結果、第2子機が第3子機と内部通話
していることを識別したとき、親機(刀は第3子機の状
態をRAMQIのステータステーブルから判断し、若し
、0,0であるのなら前述と同様に通信用受信回路(5
)及び通信用送信回路(6)の送受信周波数を第3子機
の送受信周波数と一致させる等して第3子機の状態を確
認する。若し第3子機が待機状態であることが確認され
たときは、親機(1)から第2子機に許可信号を送信す
る。すると第2子機の送受信周波数は第3子機の送受信
周波数に設定されるから、第2子機と第3子機との間で
通話できる。
In addition, as a result of receiving and monitoring signals from each handset in the monitor receiving circuit (4), when it is identified that the second handset is communicating internally with the third handset, the main phone (sword is the third handset) 3 The status of the handset is judged from the RAMQI status table, and if it is 0,0, the communication receiving circuit (5
) and the transmission/reception frequency of the communication transmitting circuit (6) to match the transmission/reception frequency of the third slave unit to check the status of the third slave unit. If it is confirmed that the third handset is in a standby state, a permission signal is transmitted from the base (1) to the second handset. Then, the transmission/reception frequency of the second handset is set to the transmission/reception frequency of the third handset, so that a call can be made between the second handset and the third handset.

若し第3子機がRAM(1枠のステータステーブルから
通話中等使用されることが識別されたときには、親機か
ら許可信号が送信されないので内部通話を行うことがで
きない。
If it is determined from the status table of RAM (1 frame) that the third handset is to be used for a call or the like, an internal call cannot be made because a permission signal is not sent from the base unit.

(へ)発明の効果 本発明の無線電話機は上述した如く、親機に各子機から
の搬送波信号を順次受信されるようにしたモニター用受
信回路を設け、各子機の状態に応じて発生される情報信
号を復調し、検出回路で検出しコントロール回路に供給
し子機の状態を識別するようにしたので、親機で子機の
状態が常時監視することができる。従って呼出し信号が
到来したときには待機状態にある子機に前記呼出し信号
を転送することができ、又各子機から発生される要求例
えば他子機との内部通話の要求に対しても迅速に応答で
きる。その上内部通話にあっては全ての子機の状態を監
視している親機が電話の可否を判断しているから、不用
意に混信妨害となるような゛電波を子機が発生すること
をさけることができる。
(F) Effects of the Invention As described above, the wireless telephone of the present invention is provided with a monitoring receiving circuit in the base unit so as to sequentially receive carrier wave signals from each slave unit, and generates signals according to the status of each slave unit. Since the information signal sent by the main unit is demodulated, detected by the detection circuit, and supplied to the control circuit to identify the status of the slave unit, the status of the slave unit can be constantly monitored by the base unit. Therefore, when a calling signal arrives, the calling signal can be transferred to the handset in standby mode, and requests generated from each handset, such as requests for internal calls with other handsets, can be quickly responded to. can. Furthermore, in the case of internal calls, the base unit monitors the status of all handsets and determines whether the call can be accepted or not, so the handsets may inadvertently generate radio waves that may cause interference. can be avoided.

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

第1図は本発明の無線電話機の親機のブロック図、第2
図は同じく本発明の無線電話機の子機のブロック図、第
3図は第1図の親機のコントロール回路のブロック図、
第4図は本発明に用いられたコード信号を示す図表、第
5図は同じく本発明に用いられた情報信号を示す図表、
第6図は本発明のRAMのステータステーブル図である
。 (1)・・・親機、 (2)・・・電話回線、 (3)
・・・コントロール回路、 (4)・・・モニター用受
信回路、 (5)・・・通信用受信回路、 (6)・・
・通信用送信回路、 (7)・・・PLL、(81・・
・PLL、 (9)・・・第1検出回路、QO)・・・
第2検出回路、 (11)・・・第3検出回路、01)
・・・受信回路、 c37)・・・送信回路、 (3叱
・・検出回路、(40・・・制御回路。 出願人 三洋電機株式会社 外1名 代理人 弁理士 佐 野 靜 夫 第1図 9.32図 30 ・二1〜4【4 第う図
FIG. 1 is a block diagram of the base unit of the wireless telephone of the present invention, and FIG.
FIG. 3 is a block diagram of the handset of the wireless telephone according to the present invention, FIG. 3 is a block diagram of the control circuit of the base device of FIG. 1,
FIG. 4 is a chart showing code signals used in the present invention, FIG. 5 is a chart showing information signals also used in the present invention,
FIG. 6 is a status table diagram of the RAM of the present invention. (1)...Base unit, (2)...Telephone line, (3)
...Control circuit, (4)...Monitor receiving circuit, (5)...Communication receiving circuit, (6)...
・Communication transmitting circuit, (7)...PLL, (81...
・PLL, (9)...first detection circuit, QO)...
Second detection circuit, (11)...Third detection circuit, 01)
...reception circuit, c37) ...transmission circuit, (3..detection circuit, (40..control circuit). Applicant: Sanyo Electric Co., Ltd. and one other representative Patent attorney: Yasuo Sano Figure 1 9.32Figure 30 ・21~4 [4 Figure U

Claims (1)

【特許請求の範囲】[Claims] (1)電話回線に接続された親機と、夫々異なる送受信
周波数を有し前記親機と無線で通話可能にした複数の子
機を有するものにおいて、親機に各子機の送信周波数に
順次同調)れるよ5にスキャンされるモニター用受信回
路、該モニター用受信回路で復鯛された子機の状態を示
す情報信号を検出する検出回路及び該検出回路で検出さ
れた情報信号を識別するコントロール回路とを設け、各
子機に前記情報信号発生回路を設け、前記各子機の情報
信号発生回路から発生される情報信号を親機のモニター
用受信回路で常時監視し、各子機の状態を識別すること
を特徴とする無線電話機。
(1) In a device that has a base unit connected to a telephone line and multiple handsets that each have different transmitting and receiving frequencies and can communicate wirelessly with the base unit, the base unit sequentially transmits the transmission frequency of each handset. A monitor receiving circuit that is scanned every time it is tuned), a detection circuit that detects an information signal indicating the status of the handset recovered by the monitor receiving circuit, and a detection circuit that identifies the information signal detected by the detection circuit. The information signal generation circuit is provided in each slave unit, and the information signal generated from the information signal generation circuit of each slave unit is constantly monitored by the monitor receiving circuit of the base unit. A wireless telephone characterized by state identification.
JP59050515A 1984-03-15 1984-03-15 Radio telephone set Pending JPS60194628A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP59050515A JPS60194628A (en) 1984-03-15 1984-03-15 Radio telephone set
US06/711,300 US4741019A (en) 1984-03-15 1985-03-13 Cordless telephone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59050515A JPS60194628A (en) 1984-03-15 1984-03-15 Radio telephone set

Publications (1)

Publication Number Publication Date
JPS60194628A true JPS60194628A (en) 1985-10-03

Family

ID=12861106

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59050515A Pending JPS60194628A (en) 1984-03-15 1984-03-15 Radio telephone set

Country Status (1)

Country Link
JP (1) JPS60194628A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0346248U (en) * 1989-09-11 1991-04-30

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5533332A (en) * 1978-08-30 1980-03-08 Nec Corp Subscriber's radio communication system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5533332A (en) * 1978-08-30 1980-03-08 Nec Corp Subscriber's radio communication system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0346248U (en) * 1989-09-11 1991-04-30

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