JPH0759106B2 - Cordless phone - Google Patents
Cordless phoneInfo
- Publication number
- JPH0759106B2 JPH0759106B2 JP61151718A JP15171886A JPH0759106B2 JP H0759106 B2 JPH0759106 B2 JP H0759106B2 JP 61151718 A JP61151718 A JP 61151718A JP 15171886 A JP15171886 A JP 15171886A JP H0759106 B2 JPH0759106 B2 JP H0759106B2
- Authority
- JP
- Japan
- Prior art keywords
- slave
- unit
- signal
- electric field
- master unit
- 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.)
- Expired - Lifetime
Links
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明はコードレス電話機に関し、特に１台の親機を複
数台の子機で共用するコードレス電話機に関する。The present invention relates to a cordless telephone, and more particularly to a cordless telephone in which one master unit is shared by a plurality of slave units.
従来、コードレス電話機は、第４図に示すように、電話
線路11に繋がる交換機１に加入者線12を介して接続した
親機２と、この親機２に無線接続した子機３とで構成し
ている。即ち、親機２と子機３とを無線接続することに
より、親機２を通して子機３を加入者線12及び交換機１
に接続し、図外の電話機との通話を可能としている。Conventionally, as shown in FIG. 4, a cordless telephone is composed of a base unit 2 connected to an exchange 1 connected to a telephone line 11 via a subscriber line 12, and a handset 3 wirelessly connected to the base unit 2. is doing. That is, by wirelessly connecting the master unit 2 and the slave unit 3, the slave unit 3 is connected to the subscriber line 12 and the exchange 1 through the master unit 2.
It is possible to talk with a telephone (not shown) by connecting to.
上述した従来のコードレス電話機では、親機２と子機３
とを１対１で無線接続しているため、１台の電話に親機
用及び子機用と２台の無線機が必要となるのにもかかわ
らず、使用できる子機は１台のみである。このため、複
数台の子機を必要とする場合には、これに対応させて親
機及び加入者線を増設しなければならならず、設備が困
難になるとともに、経済的に有効ではない。In the above-mentioned conventional cordless telephone, the base unit 2 and the handset 3
Since 1 and 1 are wirelessly connected to each other, one phone requires two wireless devices, one for the master device and one for the slave device, but only one slave device can be used. is there. For this reason, when a plurality of slave units are required, it is necessary to add a master unit and a subscriber line in correspondence with this, which makes equipment difficult and is not economically effective.
また、無線機のコストは電話機全体に対してかなりのウ
ェートを占めるため、親機，子機が１対１の組合わせで
は、無線化に要するコストを一人の加入者が負担するこ
とになり得策ではない。Moreover, since the cost of the wireless device occupies a considerable weight with respect to the entire telephone set, if the combination of the master device and the slave device is one-to-one, one subscriber will bear the cost required for wireless communication, which is a good idea. is not.
本発明のコードレス電話機は、以上の問題に鑑み、１台
の親機に対して複数台の子機を使用可能とし、これによ
り設備の容易化を図りかつ経済的な硬化を高めるもので
ある。In view of the above problems, the cordless telephone of the present invention enables a plurality of child devices to be used with respect to one parent device, thereby facilitating equipment and improving economical curing.
本発明のコードレス電話機は、１台の親機と、夫々異な
る個別選択信号を有する複数台の子機とを対応させて無
線接続し、この親機は個別選択信号を時間的にずらせて
順次送信可能に構成するとともに、この個別選択信号に
応動して送信される夫々の子機の個別選択信号を受信
し、かつこの信号の電界強度を比較して電界の強い子機
との接続を行うように構成している。The cordless telephone of the present invention wirelessly connects one master unit to a plurality of slave units each having a different individual selection signal, and the master unit sequentially transmits the individual selection signals by shifting them in time. It is configured to be capable of receiving the individual selection signal of each slave unit transmitted in response to this individual selection signal, and comparing the electric field strength of this signal to establish a connection with a slave unit having a strong electric field. Is configured.
次に、本発明を図面を参照して説明する。 Next, the present invention will be described with reference to the drawings.
第１図は本発明の一実施例を示す構成図であり、電話線
路11には交換機１を接続し、これには加入者線12を介し
て親機２を接続している。この交換機１は電話局の局用
交換機またはPABXいずれでもよく、電話線路11を介して
図外の上位交換機に接続している。そして、前記親機２
及びこれに対応して配設した複数台の子機3a〜3nには夫
々無線送受信機を配設し、親機２とこれら子機3a〜3nを
夫々個別に無線接続できるように構成している。FIG. 1 is a block diagram showing an embodiment of the present invention, in which a telephone line 11 is connected to an exchange 1 and a subscriber line 12 is connected to a main unit 2. This exchange 1 may be either a central office exchange of a telephone office or a PABX, and is connected to a host exchange (not shown) via a telephone line 11. And the base unit 2
Also, a plurality of slave units 3a to 3n arranged correspondingly are provided with wireless transceivers, respectively, so that the master unit 2 and these slave units 3a to 3n can be individually wirelessly connected. There is.
前記子機3a〜3nは夫々異なる個別選択信号（以下、ID信
号と言う）が予め与えられており、親機２はこれら子機
に対して共通なID信号を送出するとともに、これら子機
からのID信号を受信する機能を有している。そして、こ
の受信によりID信号を確認し、親機と子機との無線接続
を行うことができる。即ち、親機は子機のID信号を順次
時間をずらせて送信し、この信号に応動して子機から送
信される子機のID信号が含まれた電波を受信し、かつ検
出してその強さを比較し、１番電界の強い子機に対して
ベル鳴動信号を送出し、この子機に対して着信があった
ことを知らしめる。Different individual selection signals (hereinafter referred to as ID signals) are given to the slave units 3a to 3n in advance, and the master unit 2 sends a common ID signal to these slave units, It has the function of receiving the ID signal. Then, by this reception, the ID signal can be confirmed and wireless connection between the master unit and the slave unit can be performed. That is, the master transmits the ID signals of the slaves sequentially with a time shift, receives the radio wave including the ID signal of the slave transmitted from the slaves in response to this signal, and detects and detects the radio wave. The strengths are compared, and a bell ringing signal is sent to the child machine having the strongest electric field to notify the child machine that there is an incoming call.
前記親機２は、第２図に示すように、加入者線12を通し
た交換機１との送受信信号，音声信号を２−４線変換回
路22にて送信音声増幅器23,受信音声増幅器25に分岐さ
せる。21は交換機１からの呼出信号を検出する検出器で
ある。送信音声増幅器23の出力信号は無線送信器24にて
変調され、無線信号として送信される。26は無線受信機
で、ここで受信された電波は復調され、復調された音声
帯域信号は受信音声増幅器25にて増幅される。送信機2
4,受信機26は局部発振器28にて定められた無線チャネル
に整えられる。29はデュプレクサでアンテナ30に接続さ
れる。27は制御回路で、子機3a〜3nとの間のID信号の送
受信を制御するとともに、他の回路に対する種々の制御
を行う。As shown in FIG. 2, the master unit 2 sends a transmission / reception signal and a voice signal to / from the exchange 1 through the subscriber line 12 to a transmission voice amplifier 23 and a reception voice amplifier 25 by a 2-4 line conversion circuit 22. Branch. Reference numeral 21 is a detector for detecting a calling signal from the exchange 1. The output signal of the transmission voice amplifier 23 is modulated by the wireless transmitter 24 and transmitted as a wireless signal. A radio receiver 26 demodulates the radio waves received here, and the demodulated voice band signal is amplified by the reception voice amplifier 25. Transmitter 2
4. The receiver 26 is arranged on the radio channel defined by the local oscillator 28. A duplexer 29 is connected to the antenna 30. A control circuit 27 controls transmission / reception of ID signals to / from the slaves 3a to 3n, and performs various controls on other circuits.
この構成によれば、第３図に示すように、検出器21にて
検出された交換器１から呼出信号Ａを受けると、送信機
24は起動されて送信電波Ｂを送出する。これにより子機
3a〜3nが起動されるが、この際子機の起動の順序とし
て、例えば図示のように送信電界ＣをID1，ID2……IDn
と送信し、この信号によって選択的に起動された子機か
らの受信電界Ｄを比較し、一番強い電界を有する子機を
選択する。この場合では、ID1信号を持つ子機の電界が
一番強いとして、以後ID1信号にて変調されたベル鳴動
信号Ｅを送出し、この子機のみベルを鳴動させる。他の
子機は、自己のID信号を受信後適当なタイミングで復旧
する。According to this configuration, as shown in FIG. 3, when the ringing signal A is received from the exchange 1 detected by the detector 21, the transmitter
24 is activated and sends out a transmission radio wave B. This makes the child machine
3a to 3n are activated. At this time, as the activation order of the slave unit, for example, the transmission electric field C is set to ID 1 , ID 2 ... ID n as shown in the figure.
Then, the received electric field D from the slave unit selectively activated by this signal is compared, and the slave unit having the strongest electric field is selected. In this case, assuming that the electric field of the slave unit having the ID 1 signal is the strongest, the bell ringing signal E modulated by the ID 1 signal is transmitted thereafter, and only the slave unit rings the bell. Other slave units recover at appropriate timing after receiving their own ID signals.
このようにして、親機２は複数台の子機3a〜3nから１台
を選択することになり、もし受信電界が同じときには予
めID1〜IDn信号の中に優先順位を設定しておき、優先順
位の高い子機を選択する方法がある。優先順位のつけ方
としては、いばん良く使用される可能性のある子機を高
く、使用頻度の低い子機を低くしてもよい。また、この
優先順位を親機において手動により切替えるようにして
おくことも可能である。更に、使用者が優先順位を手動
にて設定する代わりに、自動的に親機の中で判定させる
ことも可能である。In this way, the master unit 2 selects one unit from the plurality of slave units 3a to 3n, and if the received electric field is the same, the priority order is set in advance in the ID 1 to ID n signals. , There is a method of selecting a child device having a high priority. As a method of prioritizing, a child machine that is most likely to be used may be high and a child machine that is rarely used may be low. It is also possible to manually switch the priority order in the master unit. Further, instead of the user manually setting the priority order, it is also possible to have the master unit automatically determine the priority order.
以上説明したように本発明は、１台の親機に異なる個別
選択信号を有する複数台の子機を対応させて両者を無線
接続するとともに、これら子機同志の電波干渉を起こす
ことなく子機の中から１台を選択して親機と接続使用す
ることができるので、複数台の子機に対して複数台の親
機を設ける必要がなく、設備の容易化を図るともに、コ
ストの低減を達成でき経済的にも有利になる。As described above, according to the present invention, one master unit is associated with a plurality of slave units having different individual selection signals to wirelessly connect the slave units to each other, and the slave units do not cause radio wave interference between the slave units. It is possible to select and use one of the main units to connect to the main unit, so there is no need to provide multiple main units for multiple slave units, which simplifies equipment and reduces costs. And can be economically advantageous.
第１図は本発明の一実施例の構成図、第２図は親機の回
路構成図、第３図は信号のタイムチャート図、第４図は
従来の構成図である。 １…交換機、２…親機、3,3a〜3n…子機、11…電話線
路、12…加入者線、21…呼出信号検出器、22…２−４線
変換回路、23…送信音声増幅器、24…無線送信機、25…
受信音声増幅器、26…無線受信機、27…制御回路、28…
局部発振器、29…デュプレクサ、30…アンテナ。FIG. 1 is a configuration diagram of an embodiment of the present invention, FIG. 2 is a circuit configuration diagram of a master unit, FIG. 3 is a signal time chart diagram, and FIG. 4 is a conventional configuration diagram. DESCRIPTION OF SYMBOLS 1 ... Exchange, 2 ... Master, 3, 3a-3n ... Slave, 11 ... Telephone line, 12 ... Subscriber line, 21 ... Ring signal detector, 22 ... 2-4 line conversion circuit, 23 ... Transmission voice amplifier , 24… wireless transmitter, 25…
Receiving voice amplifier, 26 ... Wireless receiver, 27 ... Control circuit, 28 ...
Local oscillator, 29 ... Duplexer, 30 ... Antenna.
Claims (2)
有する複数台の子機とを対応させて無線接続し、前記親
機は個別選択信号を時間的にずらせて順次送信可能に構
成するとともに、この個別選択信号に応動して送信され
る夫々の子機の個別選択信号を受信し、かつこの信号の
電界強度を比較して電界の強い子機との接続を行うよう
に構成したことを特徴とするコードレス電話機。1. A master unit and a plurality of slave units each having a different individual selection signal are wirelessly connected to each other, and the master unit is capable of sequentially shifting the individual selection signals by shifting in time. In addition to the configuration, it is configured to receive the individual selection signal of each slave unit that is transmitted in response to this individual selection signal, compare the electric field strength of this signal, and connect to the slave unit with a strong electric field. A cordless telephone characterized by the above.
しておき、各子機からの電界強度が等しい場合には優先
順位に従って子機を選択してなる特許請求の範囲第１項
記載のコードレス電話機。2. A master unit is set with a priority order corresponding to each slave unit, and when the electric field strength from each slave unit is equal, the slave units are selected according to the priority order. The cordless telephone set forth in item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61151718A JPH0759106B2 (en) | 1986-06-30 | 1986-06-30 | Cordless phone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61151718A JPH0759106B2 (en) | 1986-06-30 | 1986-06-30 | Cordless phone |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS639239A JPS639239A (en) | 1988-01-14 |
| JPH0759106B2 true JPH0759106B2 (en) | 1995-06-21 |
Family
ID=15524764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61151718A Expired - Lifetime JPH0759106B2 (en) | 1986-06-30 | 1986-06-30 | Cordless phone |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0759106B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4450663B2 (en) * | 2004-04-06 | 2010-04-14 | 三菱電機株式会社 | Wireless communication type automatic meter reading system |
| JP4983005B2 (en) | 2005-04-12 | 2012-07-25 | 富士通株式会社 | Electronic device, priority connection device, priority connection method, and priority connection program |
-
1986
- 1986-06-30 JP JP61151718A patent/JPH0759106B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS639239A (en) | 1988-01-14 |
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