JPS6354096A - Cordless terminal electronic exchange system - Google Patents
Cordless terminal electronic exchange systemInfo
- Publication number
- JPS6354096A JPS6354096A JP61197617A JP19761786A JPS6354096A JP S6354096 A JPS6354096 A JP S6354096A JP 61197617 A JP61197617 A JP 61197617A JP 19761786 A JP19761786 A JP 19761786A JP S6354096 A JPS6354096 A JP S6354096A
- Authority
- JP
- Japan
- Prior art keywords
- code
- cordless
- terminal
- connection device
- codes
- 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
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 238000004891 communication Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000009792 diffusion process Methods 0.000 abstract 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は電子交換機にコードレス端末が収容されたコー
ドレス端末電子交換システムに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cordless terminal electronic switching system in which a cordless terminal is housed in an electronic switchboard.
従来、この種の電子交換システムにおいて、コードレス
端末の送信周波数および受信周波数は接続装置と一対一
に固定で対応していた。Conventionally, in this type of electronic switching system, the transmitting frequency and receiving frequency of the cordless terminal have been fixedly corresponded to the connecting device on a one-to-one basis.
上述した従来の電子交換システムは、コードレス端末ご
とに接続装置が必要であり、また送受信周波数チャンネ
ルも端末ごとにできるだけ重複しないよう配慮されてい
たため、多数のチャンネルが必要であり、不経済である
とともに１周波数資源を浪費するという欠点がある。The conventional electronic switching system described above requires a connection device for each cordless terminal, and care has been taken to avoid duplication of transmitting and receiving frequency channels for each terminal as much as possible, so a large number of channels are required, which is both uneconomical and This method has the disadvantage of wasting one frequency resource.
本発明のコードレス端末電子交換システムは、各コード
レス端末は、送信信号を端末ごとにあらかじめ定められ
た符号により拡散し、かつ受信信号を前記符号←より逆
拡散する手段を有し、またこれらコードレス端末を制御
する電子交換機側の接続装置は、送信信号を拡散する符
号および受信信号を逆拡散する符号を通信するコードレ
ス端末ごとに変え、該コードレス端末の前記符号に合わ
せる手段を有する。In the cordless terminal electronic switching system of the present invention, each cordless terminal has a means for spreading a transmitted signal by a predetermined code for each terminal, and despreading a received signal from the code ←, and The connection device on the electronic exchange side that controls the transmission has means for changing the code for spreading the transmitted signal and the code for despreading the received signal for each communicating cordless terminal, and matching the code to the code of the cordless terminal.
このように、接続装置の拡散、逆拡散符号をコードレス
端末のそれに合わせることより、接続装置−つに対して
複数のコードレス端末と通信が可能となる。In this way, by matching the spreading and despreading codes of the connecting device to those of the cordless terminal, it becomes possible for one connecting device to communicate with a plurality of cordless terminals.
次に、本発明の実施例について図面を参照して説明する
。Next, embodiments of the present invention will be described with reference to the drawings.
第１図は本発明のコードレス端末電子交換システムの一
実施例のブロック図である。FIG. 1 is a block diagram of one embodiment of the cordless terminal electronic switching system of the present invention.
接続装置４、時分割スイッチ２７、中央制御装置２日か
らなる電子交換機にコードレス端末１，２．３が収容さ
れている。The cordless terminals 1, 2.3 are housed in an electronic exchange consisting of a connection device 4, a time division switch 27 and a central control device 2.
コードレス端末１は送信アンテナ８、受信アンテナ９、
送信部５、受信部７および符号発生器６を有している。The cordless terminal 1 has a transmitting antenna 8, a receiving antenna 9,
It has a transmitter 5, a receiver 7, and a code generator 6.
同様に、コードレス端末２は送信アンテナ１３、受信ア
ンテナ１４、送信部１０、受信部１２および符号発生器
１１を有し、コードレス端末３は送信アンテナ１８、受
信アンテナ１９、送信部１５、受信部１７および符号発
生器１６を有している。電子交換機の接続装置２０は送
信アンテナ２３、受信アンテナ２４、送信部２０．符号
発生器２１、受信部２２、制御部２５およびハイブリッ
ド回路２Ｂを有している。Similarly, the cordless terminal 2 has a transmitting antenna 13, a receiving antenna 14, a transmitting section 10, a receiving section 12, and a code generator 11, and the cordless terminal 3 has a transmitting antenna 18, a receiving antenna 19, a transmitting section 15, and a receiving section 17. and a code generator 16. The connection device 20 of the electronic exchange includes a transmitting antenna 23, a receiving antenna 24, a transmitting section 20. It has a code generator 21, a receiving section 22, a control section 25, and a hybrid circuit 2B.
符号発生器６．１１．１６はコードレス端末１，２．３
ごとにあらかじめ定められた符号ＰＮ、 、 ＰＮ２．
ＰＮ３をそれぞれ有し、送信信号を符号ＰＮＩ、ＰＮ
２．ＰＮ３により拡散し、かつ受信信号を符号ＰＭ、、
ＰＮ、、、ｐＮ３により逆拡散する。一方、符号発生器
２１は、送信信号を拡散する符号および受信信号を逆拡
散する符号をコードレス端末１，２．３ごとに変え、コ
ードレス端末！、２．３の符号ＰＮ、 、ＰＮ２．ＰＮ
３に合わせる。Code generator 6.11.16 is connected to cordless terminal 1, 2.3
Predetermined codes PN, , PN2.
PN3 respectively, and transmit signals with codes PNI and PN
2. The received signal is spread by PN3, and the received signal is coded PM, .
It is counter-diffused by PN, , pN3. On the other hand, the code generator 21 changes the code for spreading the transmitted signal and the code for despreading the received signal for each cordless terminal 1, 2.3. , 2.3 code PN, , PN2. P.N.
Adjust to 3.
接続装置４とコードレス端末１が通信する場合、符号発
生器２１の符号は符号発生器６と同一の符号ＰＮ、が中
央制御装置２日より制御部２５を経由して決定される。When the connecting device 4 and the cordless terminal 1 communicate, the code of the code generator 21 is determined to be the same code PN as that of the code generator 6 from the central controller 2 via the control unit 25.
コードレス端末２と通信する場合は、符号発生器２１の
符号は符号発生器１１と同一のＰＮ２が、またコードレ
ス端末３の場合は、符号発生器２１の符号は符号発生器
１６と同一の符号ＰＨ２が中央制御装置２８より制御部
２５を経由して決定される。When communicating with the cordless terminal 2, the code of the code generator 21 is the same PN2 as the code generator 11, and in the case of the cordless terminal 3, the code of the code generator 21 is the same code PH2 as the code generator 16. is determined by the central controller 28 via the control section 25.
以上説明したように本発明は、接続装置の拡散、逆拡散
符号をコードレス端末のそれに合わせることにより、接
続装置１つに対して複数のコードレス端末と通信が可能
であり、また使用する周波数帯域は広がるが、同一周波
数帯でも、拡散、逆拡散符号が一致しなければ通信は不
可能であるため、接続装置が減り経済的であるばかりで
なく、秘話性も増すという効果がある。As explained above, the present invention allows one connection device to communicate with a plurality of cordless terminals by matching the spreading and despreading codes of the connection device to those of the cordless terminal, and the frequency band used is However, even in the same frequency band, communication is impossible unless the spreading and despreading codes match, which not only reduces the number of connecting devices and is economical, but also increases confidentiality.
第１図は本発明のコードレス端末電子交換システムの一
実施例のブロック図である。
１．２．３・・・・・・コードレス端末、４・・・・・
・接続装置、
５．１０．１５・・・・・・コードレス端末１，２．３
の送信部。
？、１２．１７・・・・・・コードレス端末１，２．３
の受信部、８．１３．１８・・・・・・コードレス端末
１，２．３の送信アンテナ、
９．１４．１９・・・・・・コードレス端末１，２．３
の受信アンテナ。
８．１１．１８・・・・・・コードレス端末１，２．３
の符号発生器、
２０・・・・・・接続装置４の送信部。
２１・・・・・・符号発生器、
２２・・・・・・接続装置４の受信部。
２３・・・・・・接続装置４の送信アンテナ、２４・・
・・・・接続装置４の受信アンテナ、２５・・・・・・
接続装置４の制御部。
２８・・・・・・ハイブリッド回路。
２７・・・・・・時分割スイッチ、
２日・・・・・・中央制御装置。FIG. 1 is a block diagram of one embodiment of the cordless terminal electronic switching system of the present invention. 1.2.3... Cordless terminal, 4...
・Connection device, 5.10.15... Cordless terminal 1, 2.3
transmitting section. ? , 12.17... Cordless terminal 1, 2.3
8.13.18...Transmission antenna of cordless terminal 1, 2.3, 9.14.19... Cordless terminal 1, 2.3
receiving antenna. 8.11.18... Cordless terminal 1, 2.3
code generator, 20...transmission section of the connection device 4; 21... Code generator, 22... Receiving section of the connecting device 4. 23... Transmission antenna of connection device 4, 24...
...Receiving antenna of connection device 4, 25...
A control unit of the connection device 4. 28...Hybrid circuit. 27...Time division switch, 2nd...Central control unit.
Claims (1)
末電子交換システムにおいて、 各コードレス端末は、送信信号を端末ごとにあらかじめ
定められた符号により拡散し、かつ受信信号を前記符号
により逆拡散する手段を有し、またこれらコードレス端
末を制御する電子交換機側の接続装置は、送信信号を拡
散する符号および受信信号を逆拡散する符号を通信する
コードレス端末ごとに変え、該コードレス端末の前記符
号に合わせる手段を有することを特徴とするコードレス
端末電子交換システム。[Claims] In a cordless terminal electronic switching system in which cordless terminals are housed in an electronic exchange, each cordless terminal spreads a transmitted signal using a predetermined code for each terminal, and inverts a received signal using the code. The connecting device on the electronic exchange side, which has means for spreading and also controls these cordless terminals, changes the code for spreading the transmitted signal and the code for despreading the received signal for each communicating cordless terminal. A cordless terminal electronic switching system, characterized in that it has means for matching the code.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61197617A JPS6354096A (en) | 1986-08-22 | 1986-08-22 | Cordless terminal electronic exchange system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61197617A JPS6354096A (en) | 1986-08-22 | 1986-08-22 | Cordless terminal electronic exchange system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6354096A true JPS6354096A (en) | 1988-03-08 |
Family
ID=16377455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61197617A Pending JPS6354096A (en) | 1986-08-22 | 1986-08-22 | Cordless terminal electronic exchange system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6354096A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5123043A (en) * | 1986-09-18 | 1992-06-16 | Sony Corporation | Radio communication method and system |
| JPH04360433A (en) * | 1991-06-07 | 1992-12-14 | Canon Inc | Telephone exchange |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5856290A (en) * | 1981-09-29 | 1983-04-02 | Nec Corp | Storage device |
| JPS61248698A (en) * | 1985-04-26 | 1986-11-05 | Hitachi Ltd | Exchange system using spread spectrum modulation |
-
1986
- 1986-08-22 JP JP61197617A patent/JPS6354096A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5856290A (en) * | 1981-09-29 | 1983-04-02 | Nec Corp | Storage device |
| JPS61248698A (en) * | 1985-04-26 | 1986-11-05 | Hitachi Ltd | Exchange system using spread spectrum modulation |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5123043A (en) * | 1986-09-18 | 1992-06-16 | Sony Corporation | Radio communication method and system |
| JPH04360433A (en) * | 1991-06-07 | 1992-12-14 | Canon Inc | Telephone exchange |
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