JPH01204549A - Modulator/demodulator - Google Patents

Modulator/demodulator

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Publication number
JPH01204549A
JPH01204549A JP63029345A JP2934588A JPH01204549A JP H01204549 A JPH01204549 A JP H01204549A JP 63029345 A JP63029345 A JP 63029345A JP 2934588 A JP2934588 A JP 2934588A JP H01204549 A JPH01204549 A JP H01204549A
Authority
JP
Japan
Prior art keywords
power supply
circuit
relay
signal
power
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
JP63029345A
Other languages
Japanese (ja)
Inventor
Yoshinori Yasuda
安田 佳則
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP63029345A priority Critical patent/JPH01204549A/en
Publication of JPH01204549A publication Critical patent/JPH01204549A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To allow the modulator/demodulator to cope with either of incoming/ outgoing call at any time by only energizing standby power source by activating a relay through the reception of a signal from a telephone circuit or a control command from a personal computer so as to apply the power of a power supply device. CONSTITUTION:The standby power supply 13 is energized always to a memory 9 and a power supply control section 20. Moreover, a relay 12 is provided in the power supply control section 20 to control the power supply 8, a relay contact 14 is operated to control the application/interruption of a power supply (Vcc1) from the power supply 8. Furthermore, the relay 12 is driven at a driving circuit 11 by an output signal from a latch circuit 10. Then the relay 12 is energized by receiving a negative CI signal from the telephone circuit or a control command from a personal computer to apply the power supply Vcc1 of the power supply 8. Thus, either of incoming/outgoing call is coped with at any time by having only to energize the standby power supply device.

Description

【発明の詳細な説明】 [産業上の利用分野] この発明は、電話回線やP B X (private
 branch exchange )とパーソナルコ
ンピュータや各種のデータ通信機(以下、総称してパソ
コンという)との間に接続して、データ通信を行う変復
調装置(モデム)に関するものである。
[Detailed Description of the Invention] [Industrial Application Field] This invention is applicable to telephone lines and private
The present invention relates to a modulation/demodulation device (modem) that is connected between a branch exchange (branch exchange) and a personal computer or various data communication devices (hereinafter collectively referred to as a personal computer) to perform data communication.

[従来の技術] 従来のこの種の装置としては第3図に示すものがあった
。第3図は従来の変復調装置の構成を示すブロック図で
、−において(1)はCI検出器で、電話回線からの着
信を自動検出する。(2)は絶縁トランスで、電話回線
と電気的な直流分離を行う。
[Prior Art] A conventional device of this type is shown in FIG. FIG. 3 is a block diagram showing the configuration of a conventional modulation/demodulation device, where (1) at - is a CI detector that automatically detects incoming calls from a telephone line. (2) is an isolation transformer, which electrically isolates direct current from the telephone line.

(3)は変調/復調回路で、電話回線で伝送するのに適
した形態の信号と、ディジタル回路で処理するのに適し
た形態の信号との間の相互変換を行っている。(4)は
制御処理回路で、変調/復調回路(3)やデータの発着
信を制御している。(5)はインタフェース(I F 
) 、(6)はパソコン、(7)は電源スイッチ、(8
)は電源装置で、各回路への給電を行っている。
(3) is a modulation/demodulation circuit that performs mutual conversion between a signal in a form suitable for transmission over a telephone line and a signal in a form suitable for processing by a digital circuit. (4) is a control processing circuit that controls the modulation/demodulation circuit (3) and the sending and receiving of data. (5) is the interface (IF
), (6) is the computer, (7) is the power switch, (8
) is the power supply device, which supplies power to each circuit.

電源スイッチ(7)により電源が投入され、準備が整っ
た後、「着信」即ち電話回線からの呼び出しがあると、
CI検出器(1)は自動的にこの呼び出し信号を検出し
、制御処理回路(4)へ薯信号を出力する。制御処理回
路(4)ではCI信号(CI信号の存在するとき論理「
L」となる信号)を受信すると「着信」があったことを
知って変調/復調回路<3)を駆動させ、絶縁1−ラン
ス(2)を介して呼び出しの相手側(以下、発呼側と記
す)にアンサ−トーンを発信する。変調/復調回路(3
)は発呼側からのキャリア信号及びデータの到来を待ち
、これを受信してディジタル信号に変調し、このデータ
を制御処理回路(4)へ逐次転送する。
After the power is turned on by the power switch (7) and preparations are completed, when there is an "incoming call", that is, a call from the telephone line,
The CI detector (1) automatically detects this call signal and outputs a signal to the control processing circuit (4). In the control processing circuit (4), the CI signal (when the CI signal exists, the logic "
When it receives a signal that becomes "L", it knows that there is an "incoming call" and drives the modulation/demodulation circuit <3), and connects the other party of the call (hereinafter referred to as the calling party) via the insulation lance (2). (denoted as ) sends an answer tone. Modulation/demodulation circuit (3
) waits for the carrier signal and data from the calling side, receives them, modulates them into digital signals, and sequentially transfers this data to the control processing circuit (4).

この転送されたデータは、インタフェース(5)を介し
てパソコン(6)へ送出される。
This transferred data is sent to the personal computer (6) via the interface (5).

一方、パソコン(6)からデータを電話回線に転送する
場合は、インタフェース(5)を介して必要なデータ及
び制御指令を制御処理回路(4)へ送出し、発呼動作を
行った後、相手の応答を得てデータ通信を開始する。従
って「着信」、「発信」何れの場合にも装置の電源スイ
ッチ(7)が投入されており、電源装置(8)が各回路
すべてに給電している必要がある。
On the other hand, when transferring data from a personal computer (6) to a telephone line, the necessary data and control commands are sent to the control processing circuit (4) via the interface (5), and after making a call, the other party data communication begins upon receiving a response. Therefore, in both cases of "incoming" and "outgoing" calls, the power switch (7) of the device must be turned on, and the power supply device (8) must be supplying power to all the circuits.

[発明が解決しようとする課題] 上記のような従来の変復調装置では以上のように構成さ
れているので、発呼側からの呼び出しに対応するなめ、
或は何時でもデータの送信を行えるようにするために、
各回路に常に電源を通電して待機状態にしておかねばな
らないという問題点があった。
[Problems to be Solved by the Invention] Since the conventional modem device as described above is configured as described above, in order to respond to a call from the calling side,
Or to be able to send data at any time,
There was a problem in that each circuit had to be constantly energized and kept in a standby state.

この発明はかかる問題点を解決するためになされたもの
で、必要最小限の回路だけに通電しておくだけで、何時
でも「着信」、「発信」何れの場合にも応じられる変復
調装置を得ることを目的としている。
This invention was made to solve this problem, and provides a modulation/demodulation device that can respond to both "incoming" and "outgoing" calls at any time by simply energizing only the minimum necessary circuits. The purpose is to

[課題を解決するための手段] この発明にかかる変復調装置は、スタンバイ電源と、こ
のスタンバイ電源により駆動されるラッチ回路とドライ
ブ回路とリレーとで構成された電源制御部とを設け、電
話回線からのCI信号やパソコンからの制御指令を受け
て上記リレーを動作させ、電源装置の電源を投入するこ
ととした。
[Means for Solving the Problems] A modulation/demodulation device according to the present invention is provided with a standby power supply, and a power supply control section configured with a latch circuit, a drive circuit, and a relay driven by the standby power supply, The relay was operated in response to the CI signal and the control command from the personal computer, and the power to the power supply device was turned on.

[作用] この発明においては、電話回線からのCI信号やパソコ
ンからの制御指令を受けてリレーを動作させ、電源装置
の電源を投入することとしたので、スタンバイ電源を通
電しておくだけで、何時でも「着信」、「発信」何れの
場合にも応じることができる。
[Function] In this invention, the relay is operated in response to the CI signal from the telephone line and the control command from the personal computer, and the power to the power supply device is turned on. You can respond to both incoming and outgoing calls at any time.

[実施例コ 以下、この発明の実施例を図について説明する。[Example code] Embodiments of the present invention will be described below with reference to the drawings.

第1図はこの発明による変復調装置の構成を示すブロッ
ク図、第2図は第1図に示す装置における各種信号のタ
イムチャートである。各図において第3図と同一符号は
同−又は相当部分を示し、〈9〉はメモリで、受信した
データや、発信すべきデータをパソコン〈6)から受信
して、−時的に記憶しておくためのものである。<10
)はラッチ回路で、CI信号やSET信号を受けこの信
号をラッチするためのものである。(11)はドライブ
回路、(12)はリレー(LY)、(13)はスタンバ
イ電源装置、(14)はリレー接点(1y ) 、(2
0)は電源制御部である。
FIG. 1 is a block diagram showing the configuration of a modulation/demodulation device according to the present invention, and FIG. 2 is a time chart of various signals in the device shown in FIG. In each figure, the same reference numerals as in Figure 3 indicate the same or equivalent parts, and 〈9〉 is a memory that receives received data or data to be transmitted from the personal computer 〈6) and stores it temporarily. It is for keeping. <10
) is a latch circuit that receives a CI signal or a SET signal and latches this signal. (11) is the drive circuit, (12) is the relay (LY), (13) is the standby power supply, (14) is the relay contact (1y), (2
0) is a power supply control section.

スタンバイ電源装置(13)は常にメモリ(9)及び電
源制御部(20)へ電源を供給している。またリレー(
12)は電源制御部(20)内に設置され、電源装置(
8)を制御するためのものであり、リレー接点(14)
を動作させて電源装置(8)からの電源(Vccl )
の入断を制御している。なおリレー(12)はラッチ回
路(10)からの出力信号によりドライブ回路(11)
で駆動される。
The standby power supply device (13) always supplies power to the memory (9) and the power control unit (20). Also, the relay (
12) is installed in the power supply control section (20), and is connected to the power supply device (
8), and the relay contact (14)
to operate the power supply (Vccl) from the power supply (8).
It controls the on/off of the The relay (12) is connected to the drive circuit (11) by the output signal from the latch circuit (10).
is driven by.

次に、データの着信時の動作について説明する。Next, the operation when data is received will be explained.

今、仮にパソコン(6)の電源がrOFF、で電源スイ
ッチ(7)が「開」、即ち電源装置(8)からは電源(
Vccl )が出力されてない時に、発呼側からの呼び
出しがあり、CI検出器(1)がこの着信を知らせる呼
び出し信号を検出した場合、この呼び出し信号と同期し
たCI信号を、制御処回路(4)と電源制御部〈20)
とへそれぞれ出力する。このCI信号は御処理回路(4
)では、電源装置(8)から給電されてないので、その
まま無効となる。
Now, suppose that the power of the personal computer (6) is OFF, and the power switch (7) is "open", that is, the power supply (8) is not connected to the power supply (8).
When there is a call from the calling side and the CI detector (1) detects a call signal notifying the arrival of the call when Vccl) is not output, the control processing circuit ( 4) and power supply control section <20)
Output to and respectively. This CI signal is transmitted to the control processing circuit (4
), the power is not supplied from the power supply device (8), so it becomes invalid as is.

一方、電源制御部(20)へ入力されたCI信号は、電
源制御部(20)内のラッチ回路(10)のトリガ信号
として、ラッチ回路(10)を駆動する。即ち、第2図
で示すようにCI信号の最初の立ち上がりでラッチ回路
(10)をトリガすることにより、ラッチ回路出力信号
が発生する。このラッチ回路出力信号がドライブ回路(
11)に送出され、ドライブ回路(11)を動作させリ
レー(12)をドライブする。リレー(12)が駆動さ
れることにより、リレー接点(14)がa側からb側へ
切り換わり、電源装置(8)へ外部からのA C100
’Vが通電され、電源装置(8)から電力(Vccl)
が出力される。以上のタイミングを第2図に示す。
On the other hand, the CI signal input to the power supply control section (20) drives the latch circuit (10) as a trigger signal for the latch circuit (10) in the power supply control section (20). That is, as shown in FIG. 2, by triggering the latch circuit (10) at the first rising edge of the CI signal, a latch circuit output signal is generated. This latch circuit output signal is transmitted to the drive circuit (
11) to operate the drive circuit (11) and drive the relay (12). By driving the relay (12), the relay contact (14) switches from the a side to the b side, and the power supply device (8) receives AC100 from the outside.
'V is energized and the power (Vccl) from the power supply (8)
is output. The above timing is shown in FIG.

電力(Vccl )が出力されることにより、従来の変
復調器としての各回路が動作を開始し、制御処理回路(
4)では次の第2番目のCI信号を得て、発呼側からの
呼び出゛しがあったことを変調/復調回路(3)に知ら
せると同時に、電話回線の直流回路を閉じるように網制
御装置(NCU、図示せず)に指示を出す。この直流回
路が閉じられると、変調/復調回路(3)は発呼側ヘア
ンサートーン信号を発し、発呼側からの応答キャリア信
号を待ち、このキャリア信号を検出し、キャリア信号に
続いて送られてくるデータを順次復調して制御処回路(
4)へ転送する。
By outputting electric power (Vccl), each circuit as a conventional modem starts operating, and the control processing circuit (
In step 4), the second CI signal is obtained to notify the modulation/demodulation circuit (3) that there is a call from the calling side, and at the same time close the DC circuit of the telephone line. An instruction is issued to a network control unit (NCU, not shown). When this DC circuit is closed, the modulation/demodulation circuit (3) emits a calling side hair sir tone signal, waits for a response carrier signal from the calling side, detects this carrier signal, and sends a signal following the carrier signal. The received data is sequentially demodulated and sent to the control processing circuit (
Transfer to 4).

ここで制御処理回路(4)はこの復調したデータをパソ
コン(6)へ転送すべく転送要求信号を出すが、この転
送要求信号に対する応答がない場合には、パソコン(6
)には電源が通電されてないことを知り、順次受信して
いるデータをメモリ(9)に記憶する。すべてのデータ
が記憶され、発呼側からの送信終了を示すコードを受信
すると、制御処理回路(4)はラッチ回路(10)へR
ESET信号を送り、ラッチ回路(10)がリセットさ
れ、リレー接点(14)は再びb側からa側に切り換わ
り、電源装置(8)への電源の入力を断ち、Vcclの
出力が停止され着信前の状態に戻る。
Here, the control processing circuit (4) issues a transfer request signal to transfer the demodulated data to the personal computer (6), but if there is no response to this transfer request signal, the personal computer (6)
) is aware that the power is not turned on, and sequentially stores the received data in the memory (9). When all the data is stored and a code indicating the end of transmission is received from the calling side, the control processing circuit (4) sends R to the latch circuit (10).
The ESET signal is sent, the latch circuit (10) is reset, the relay contact (14) is switched from the B side to the A side again, the input of power to the power supply device (8) is cut off, the output of Vccl is stopped, and the incoming call is stopped. Return to previous state.

次に、発信時における動作について説明する。Next, the operation at the time of making a call will be explained.

発信すべきデータと制御指令データをパソコン(6)か
らインタフェース(5)を介して入力する。これらのデ
ータが入力されると制御処理回路(4)はメモリ(9)
に、これらのデータの記憶を命するとともに、ラッチ回
路(10)に対しSET信号を出力する。スタンバイ電
源装置(13)は常に通電されているので、メモリ(9
)は常に動作状態にあり、入力されたデータは制御処理
回路(4)の指令下でメモリ(9)に記憶された後は、
パソコン(6)の電源や、この装置の電源スイッチ(7
)が遮断されたとしても記憶されたまま保持されており
、またラッチ回路(10)はSET信号によりCI信号
が入力したのと同じ働きを行い、指令データを解析して
、もしデータを直ぐに発信する必要がなければ、RES
ET信号を発して処理を終了し、直ぐに発信する必要が
あるデータであれば、リレー(12)をドライブさせて
メモリ(9)に記憶された発信データを目的の相手に伝
送し、データの伝送が終了すると着信時と同様にRES
ET信号を出力して一連の処理を終了する。
Data to be transmitted and control command data are input from the personal computer (6) via the interface (5). When these data are input, the control processing circuit (4) transfers the data to the memory (9).
Then, it commands storage of these data and outputs a SET signal to the latch circuit (10). Since the standby power supply (13) is always energized, the memory (9)
) is always in operation, and after the input data is stored in the memory (9) under the command of the control processing circuit (4),
Connect the power to your computer (6) or the power switch (7) to this device.
) is memorized and held even if the CI signal is cut off, and the latch circuit (10) performs the same function as when the CI signal is input by the SET signal, analyzes the command data, and transmits the data immediately. If there is no need to do so, RES
If the data needs to be sent immediately after issuing an ET signal and completing the processing, the relay (12) is driven to transmit the outgoing data stored in the memory (9) to the intended party, and the data is transmitted. When the call is finished, the RES will be displayed in the same way as when receiving
The ET signal is output and the series of processing ends.

なお上記実施例では、リレー接点(14)をA C10
0■と電源装置(8)との間に設けているが、電源装置
(8)の出力であるVcc 1に接続して出力系を直接
制御してもよく、また制御系にリレー(12)を用いて
いるが、最近の半導体技術を用いても同様に実施できる
In the above embodiment, the relay contact (14) is A C10.
0■ and the power supply (8), but it may be connected to Vcc 1, which is the output of the power supply (8), to directly control the output system, or a relay (12) may be connected to the output of the power supply (8). is used, but it can be similarly implemented using recent semiconductor technology.

[発明の効果] この発明は以上説明したとおり、電話回線からのCI信
号やパソコンからの制御指令を受けてリレーを動作させ
、電源装置の電源を投入することとしたので、スタンバ
イ電源を通電しておくだけで、何時でも「着信」、「発
信」何れの場合にも応じることができるので、必要最小
限の電源でシステムを駆動させることができ、常時シス
テム全体に給電しておく必要がなくなり、夜間の無人運
転が可能となり、またデータ送信においては、相手が通
話中の場合であっても待機させ、通話が終了したときに
自動的にデータの送信を行える等の効果がある。
[Effects of the Invention] As explained above, this invention operates a relay in response to a CI signal from a telephone line or a control command from a personal computer and turns on the power to the power supply, so it is possible to turn on the standby power. You can respond to both incoming and outgoing calls at any time just by keeping the power on, so you can run the system with the minimum amount of power required, eliminating the need to constantly power the entire system. , unmanned operation at night is possible, and in data transmission, it is possible to keep the other party on standby even when the other party is on a call, and automatically transmit data when the call ends.

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

第1図はこの発明による変復調装置の構成を示すブロッ
ク図、第2図は第1図に示す装置における各種信号のタ
イムチャ゛−ト、第3図は従来の変復調装置の構成を示
すブロック図。 (1)はCI検出器、(2)は絶縁トランス、(3)は
変調/復調回路、(4)は制御処理回路、(5)はイン
タフェース(、I F ) 、(6)はパソコン、(7
)は電源スイッチ、(8)は電源装置、(9)はメモリ
、(10)はラッチ回路、(11)はドライブ回路、(
12)はリレー、(13)はスタンバイ電源装置、(1
4)はリレー接点、(20)は電源制御部。 なお、各図中同一符号は同−又は相当部分を示すものと
する。
FIG. 1 is a block diagram showing the configuration of a modulation/demodulation device according to the present invention, FIG. 2 is a time chart of various signals in the device shown in FIG. 1, and FIG. 3 is a block diagram showing the configuration of a conventional modulation/demodulation device. (1) is a CI detector, (2) is an isolation transformer, (3) is a modulation/demodulation circuit, (4) is a control processing circuit, (5) is an interface (, I F ), (6) is a personal computer, ( 7
) is the power switch, (8) is the power supply device, (9) is the memory, (10) is the latch circuit, (11) is the drive circuit, (
12) is a relay, (13) is a standby power supply, (1
4) is a relay contact, and (20) is a power supply control section. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

【特許請求の範囲】 電話回線やPBX(private branch e
xchange)とパーソナルコンピュータや各種のデ
ータ通信機器との間に接続され、上記電話回線やPBX
からの着信を自動的に検出するCI検出器と、全体を制
御する制御処理回路と、全体の回路に給電を行う電源ス
イッチを持つ電源装置とを有する変復調装置において、 上記電源装置とは別に設けられたスタンバイ電源装置と
、 このスタンバイ電源装置から常に給電されているラッチ
回路とドライブ回路とリレーとで構成された電源制御部
とを備え、 上記電話回線やPBXからの着信や上記パーソナルコン
ピュータからの制御指令を受けて上記制御処理回路が上
記電源制御部にSET信号を発し、このSET信号を上
記ラッチ回路がラッチし、上記リレーを上記ドライブ回
路で駆動させ、上記電源スイッチを動作させ、上記電源
装置の電源を投入してデータの転送を行い、 このデータの転送が終了したときには上記制御処理回路
が上記電源制御部にRESET信号を発し、このRES
ET信号を上記ラッチ回路がラッチし、上記リレーを上
記ドライブ回路で駆動させ、上記電源スイッチを動作さ
せ、上記電源装置の電源を遮断することを特徴とする変
復調装置。
[Claims] Telephone lines and PBX (private branch
xchange) and personal computers and various data communication devices, and is connected to the above telephone line and PBX.
In a modem device that has a CI detector that automatically detects incoming calls from a computer, a control processing circuit that controls the entire circuit, and a power supply device that has a power switch that supplies power to the entire circuit, It is equipped with a standby power supply device, which is equipped with a standby power supply device, and a power supply control unit consisting of a latch circuit, a drive circuit, and a relay, which are always supplied with power from the standby power supply device. In response to the control command, the control processing circuit issues a SET signal to the power supply control section, the SET signal is latched by the latch circuit, the relay is driven by the drive circuit, the power switch is operated, and the power supply is switched on. The device is powered on and data is transferred, and when the data transfer is completed, the control processing circuit issues a RESET signal to the power supply control section, and this RES
A modulation/demodulation device characterized in that the ET signal is latched by the latch circuit, the relay is driven by the drive circuit, the power switch is operated, and the power of the power supply device is cut off.
JP63029345A 1988-02-10 1988-02-10 Modulator/demodulator Pending JPH01204549A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63029345A JPH01204549A (en) 1988-02-10 1988-02-10 Modulator/demodulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63029345A JPH01204549A (en) 1988-02-10 1988-02-10 Modulator/demodulator

Publications (1)

Publication Number Publication Date
JPH01204549A true JPH01204549A (en) 1989-08-17

Family

ID=12273639

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63029345A Pending JPH01204549A (en) 1988-02-10 1988-02-10 Modulator/demodulator

Country Status (1)

Country Link
JP (1) JPH01204549A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07154445A (en) * 1993-11-29 1995-06-16 Nec Corp Power source controller for data communication equipment
JPH07154446A (en) * 1993-12-01 1995-06-16 Nec Corp Power consumption reducing circuit
WO1995027342A1 (en) * 1994-04-04 1995-10-12 Motorola, Inc. A method of power conservation
JP2011217423A (en) * 1997-07-30 2011-10-27 Wi-Lan Inc Power conservation for pots and modulated data transmission

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07154445A (en) * 1993-11-29 1995-06-16 Nec Corp Power source controller for data communication equipment
JPH07154446A (en) * 1993-12-01 1995-06-16 Nec Corp Power consumption reducing circuit
WO1995027342A1 (en) * 1994-04-04 1995-10-12 Motorola, Inc. A method of power conservation
US5524021A (en) * 1994-04-04 1996-06-04 Motorola, Inc. Method of power conservation
JP2011217423A (en) * 1997-07-30 2011-10-27 Wi-Lan Inc Power conservation for pots and modulated data transmission
JP2014225927A (en) * 1997-07-30 2014-12-04 ウィ−ラン・インコーポレイテッドWI−LAN Inc. Power conservation for pots and modulated data transmission

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