JPH0626428B2 - Communication system shortened - Google Patents
Communication system shortenedInfo
- Publication number
- JPH0626428B2 JPH0626428B2 JP61029054A JP2905486A JPH0626428B2 JP H0626428 B2 JPH0626428 B2 JP H0626428B2 JP 61029054 A JP61029054 A JP 61029054A JP 2905486 A JP2905486 A JP 2905486A JP H0626428 B2 JPH0626428 B2 JP H0626428B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- transmitted
- communication system
- station
- shortened
- 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〕 本発明はファクシミリ通信方式に関し，特にCCITT勧告
Ｔ３０の短縮通信方式に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a facsimile communication system, and more particularly to a shortened communication system of CCITT Recommendation T30.
従来，この種のファクシミリ通信方式では，第３図に示
すように送信側はディジタル命令信号(DIS)あるいは非
標準設備設定信号(NSS)の後にトレーニング・チェック
(TCF)信号を送出する。これらの信号を受信した受信側
は，画信号を受信可能な状態であることを確認すると受
信確認信号(CFR)を送出する。そしてこの信号を受信し
た送信側は，画信号を送信し始める。Conventionally, in this type of facsimile communication system, as shown in FIG. 3, the sending side performs a training check after a digital command signal (DIS) or a non-standard equipment setting signal (NSS).
(TCF) signal is transmitted. Upon receiving these signals, the receiving side sends out a reception confirmation signal (CFR) when it confirms that the image signal can be received. Then, the transmitting side that receives this signal starts transmitting the image signal.
このように従来のファクシミリ通信方式では，トレーニ
ング・チェック信号を送出し，これに対する受信確認信
号(CFR)を交換した後に初めて画信号の伝送に移る。こ
れらトレーニング・チェック信号及び受信確認信号に要
する時間は２．５秒程度である。この時間長は，ファク
シミリ通信の高速度にともない無視できない値になって
おり，１通信単位の所要時間が長くなり，回線保留時間
にむだを発生するという欠点がある。As described above, in the conventional facsimile communication system, the training check signal is sent out, and after the reception confirmation signal (CFR) is exchanged, the image signal transmission is started. The time required for the training check signal and the reception confirmation signal is about 2.5 seconds. This time length is a value that cannot be ignored due to the high speed of the facsimile communication, and the time required for one communication unit becomes long, resulting in a waste of the line hold time.
本発明の目的はこのような欠点を解消することにある。An object of the present invention is to eliminate such drawbacks.
本発明によるファクシミリ短縮通信方式においては，送
信局側は受信側より受信した非標準設備信号(NSF)によ
り受信局が本短縮通信能力を有することを確認し，非標
準設備設定信号(NSS)により本短縮通信を実行すること
を指示すると，従来のトレーニング・チェック信号(TC
F)の送出を省略してただちに画信号の送出を開始するよ
うにしたことを特徴とする。In the facsimile shortening communication system according to the present invention, the transmitting station side confirms that the receiving station has the shortened communication capability by the non-standard equipment signal (NSF) received from the receiving side, and confirms by the non-standard equipment setting signal (NSS). When the instruction to execute this shortened communication is issued, the conventional training check signal (TC
The feature is that the sending of F) is omitted and the sending of the image signal is started immediately.
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図は本発明の第１実施例を示す制御シーケンス図で
ある。第１図において，受信局は送信局から起呼をかけ
られると，初期識別信号としてNSF信号，CSI信号，DIS
信号を送信局に送出し，被呼局がファクシミリ装置であ
ることを示すと同時に，NSF信号を利用してその能力を
送信局に伝達する。続いて，受信局から伝達された能力
を判定して，受信局が本発明の適用可能なあらかじめ定
められた短縮通信能力を有することを確認すると，送信
局は着信命令信号としてTSI信号，NSS信号を受信局に対
し送出して受信局に本発明による短縮通信方式実行を指
示し，所定時間の間隔をあけて画信号を所定ライン数分
だけ送出する。FIG. 1 is a control sequence diagram showing the first embodiment of the present invention. In Fig. 1, when the receiving station is called by the transmitting station, NSF signal, CSI signal, DIS as initial identification signal
A signal is sent to the transmitting station to indicate that the called station is a facsimile machine, and at the same time, the NSF signal is used to convey its capability to the transmitting station. Subsequently, the capability transmitted from the receiving station is determined, and if it is confirmed that the receiving station has a predetermined shortened communication capability to which the present invention is applicable, the transmitting station determines that the transmitting station receives the TSI signal and the NSS signal. Is sent to the receiving station to instruct the receiving station to execute the shortened communication system according to the present invention, and the image signals are transmitted for a predetermined number of lines at predetermined time intervals.
着信命令信号により指示された受信局は，ただちに画信
号の受信に移り，所定ライン数分の画信号が正確に受信
できたことを確認すると，送信局に対し受信確認信号を
送出する。この後は，従来のCCITT勧告による手順を実
行する。The receiving station instructed by the incoming command signal immediately shifts to the reception of the image signal, and when it confirms that the image signals for the predetermined number of lines have been correctly received, it sends a reception confirmation signal to the transmitting station. After that, the procedure according to the conventional CCITT recommendation is executed.
第２図は本発明の第２の実施例を示す制御シーケンス図
である。第２図において，受信局は送信局から起呼をか
けられると，初期識別信号としてNSF信号，CSI信号，DI
S信号を送信局に送出し，被呼局の能力を送信局に伝達
する。続いて，受信局から伝達された能力を判定して，
受信局が本発明による第２の実施例の適用可能なあらか
じめ定められた短縮通信能力を有することを確認する
と，送信局は着信命令信号としてTSI信号，NSS信号を受
信局に対し送出して受信局に本発明による第２の実施例
の短縮通信方式実行を指示し，所定時間の間隔をあけて
画信号を送出し始める。この画信号は所定バイト数ごと
にHDLC（ハイレベル伝送制御手順）などによりフォーマ
ット化されており，エラーチェックできる。FIG. 2 is a control sequence diagram showing a second embodiment of the present invention. In Fig. 2, when the receiving station is called by the transmitting station, the initial identification signal is NSF signal, CSI signal, DI.
The S signal is sent to the transmitting station, and the capability of the called station is transmitted to the transmitting station. Then, determine the ability transmitted from the receiving station,
When it is confirmed that the receiving station has the predetermined shortened communication capability applicable to the second embodiment of the present invention, the transmitting station sends TSI signals and NSS signals as incoming command signals to the receiving station for reception. The station is instructed to execute the shortened communication system according to the second embodiment of the present invention, and the image signals are started to be transmitted at a predetermined time interval. This image signal is formatted by HDLC (high-level transmission control procedure) for each predetermined number of bytes, and error checking is possible.
画信号を受信した受信局は，エラーチェックを行ない，
エラーがなければトーンなどの信号により全二重に送信
局へ受信確認を通信する。この受信確認信号を受信した
送信局は以降の画信号送信を続行する。The receiving station that received the image signal performs error check,
If there is no error, the reception confirmation is communicated to the transmitting station in full duplex by a signal such as a tone. The transmitting station that has received this reception confirmation signal continues the subsequent image signal transmission.
以上説明したように本発明は，トレーニング信号及び受
信確認信号の送出を省略することにより，この間の所要
時間が短縮され，従って１通信単位の所要時間が短縮で
きるという効果がある。As described above, according to the present invention, by omitting the transmission of the training signal and the reception confirmation signal, there is an effect that the required time during this period can be shortened and therefore the required time for one communication unit can be shortened.
第１図は，本発明の第１実施例のシーケンス図，第２図
は，本発明の第２の実施例のシーケンス図，第３図は，
従来の制御シーケンスの一例を示す図である。 図中，NSRは非標準設備信号，CSIは被呼局識別信号，DS
Iはディジタル命令信号，TSIは送信局識別信号，NSSは
非標準設備設定信号，CFRは受信確認信号，TCFはトレー
ニング・チェック信号。FIG. 1 is a sequence diagram of the first embodiment of the present invention, FIG. 2 is a sequence diagram of the second embodiment of the present invention, and FIG.
It is a figure which shows an example of the conventional control sequence. In the figure, NSR is non-standard equipment signal, CSI is called station identification signal, DS
I is a digital command signal, TSI is a transmitter identification signal, NSS is a non-standard equipment setting signal, CFR is a reception confirmation signal, and TCF is a training check signal.
Claims (1)
て、受信側の通信能力に応じてディジタル命令信号ある
いは非標準設備設定信号を受信側へ送信した後、トレー
ニング・チェック信号（ＴＣＦ）を送出せずにただちに
所定ライン数の画信号を送出し、受信側では該所定ライ
ン数の画信号を受信できたことを確認すると受信確認信
号を送信側へ送信し、この後送信側は残りの画信号を送
出することを特徴とするファクシミリ短縮通信方式。1. In a digital facsimile communication system, after a digital command signal or a non-standard equipment setting signal is transmitted to the receiving side according to the communication capability of the receiving side, the training check signal (TCF) is not immediately sent out and predetermined. When the image signal of the number of lines is transmitted and the receiving side confirms that the image signal of the predetermined number of lines has been received, the reception confirmation signal is transmitted to the transmitting side, and then the transmitting side transmits the remaining image signals. Facsimile shortening communication method characterized by.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61029054A JPH0626428B2 (en) | 1986-02-14 | 1986-02-14 | Communication system shortened |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61029054A JPH0626428B2 (en) | 1986-02-14 | 1986-02-14 | Communication system shortened |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62188551A JPS62188551A (en) | 1987-08-18 |
| JPH0626428B2 true JPH0626428B2 (en) | 1994-04-06 |
Family
ID=12265660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61029054A Expired - Lifetime JPH0626428B2 (en) | 1986-02-14 | 1986-02-14 | Communication system shortened |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0626428B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01135181A (en) * | 1987-11-20 | 1989-05-26 | Ricoh Co Ltd | Facsimile equipment |
| JP2845516B2 (en) * | 1989-10-11 | 1999-01-13 | コニカ株式会社 | Communication device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6130169A (en) * | 1984-07-21 | 1986-02-12 | Nec Corp | Communication system of nonstandard communication mode |
-
1986
- 1986-02-14 JP JP61029054A patent/JPH0626428B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62188551A (en) | 1987-08-18 |
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