JPS60149259A - Reduction system for transmission control procedure of facsimile equipment - Google Patents

Abstract

PURPOSE:To shorten the time required for control procedure by inhibiting the transmission of a transmission subscriber identification by setting a facsimile equipment. CONSTITUTION:A non-standard equipment signal NSF is used to a device G3 of a facsimile equipment according to a CCITT recommendation T30 to perform the mutual communication with a receiver of the remote side. When a non-standard equipment setting signal NSS containing the device identification information ID is transmitted instead of a transmission subscriber identification signal TS1. In case no signal NSF is detected and a digital identification signal DIS is detected instead, the signal TS1 and a digital instruction signal DCS are transmitted. Furthermore the information ID bit is added into the signal NSF to attain the permission and inhibition for setting of transmission of a called subscriber identification signal CSI. This can reduce the time for control procedure and ensure the effective transmission of information.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for reducing transmission control procedure time of a facsimile machine.

Description of the Prior Art Conventionally, as shown in Figure 1, the transmission control procedure for 03 aircraft in accordance with CCITT Recommendation T3o is that the calling party first makes a call, and the called party receives a ringer signal. , start receiving. After the call starts, the called side sends the called station verification signal C]4D, non-standard equipment signal, N8F, called subscriber identification signal C8I, and digital identification signal DI8 to the calling side. The calling side receives the called station verification signal (Non-standard equipment signal N, which starts transmitting after opening and confirming the JD, and subsequently receives the non-standard equipment signal N).
SF, the called subscriber identification signal CHI, and the digital identification signal DI8 are analyzed and the transmitted subscriber identification signal TRI, non-standard equipment setting signal N8S or digital command signal DC8 is determined.
, and then a training check signal TCP.

The called side (receiving side It, the above-mentioned checking check signal T)
If the CP is received normally without any errors, it sends out a reception confirmation signal CFR, and the calling party (sending side) detects this and sends the message MESB. After sending the message, if there is no JIA Yuzu to send next, the procedure end signal EO
After detecting the procedure end signal HOP, the receiving side sends a message confirmation signal M if the message has been received normally.
Send CP. The sending side receives the message confirmation signal MC.
The receiving side receives the disconnection signal DCN and ends the reception. Funk-similar communication is performed through the above procedure.

FIG. 2 shows the format of the control signal in binary code. The figure shows the non-standard equipment signal NSF, the called subscriber identification signal D8I, and the digital identification signal DI8. The same applies to control signals such as the confirmation signal CFR, procedure end signal EOP, message confirmation signal MCF, and disconnection signal DCN. What should be noted here is that a preamble consisting of a flag pattern of J'' is always added at the beginning of each control signal for about 1 second.For example, the transmission time of the reception confirmation signal CII'R frame is It is about 062 seconds, whereas the preamble is added for #8J1 second.On the other hand,
Various methods have been proposed for message transmission to shorten the transmission time. As a result, when comparing the message transmission time and the time required for control procedures, depending on the type of document, the time required for control procedures may be longer. The communication time of a facsimile is the sum of the message sending time and the time lost for control procedures, and conventional facsimile control procedures have the disadvantage that half or more than half of the communication time is spent on the control procedures. Was.

Purpose of the Invention The present invention has been made in view of the above-mentioned conventional circumstances.
Therefore, an object of the present invention is to provide a new control procedure that eliminates the above drawbacks and shortens the time required for the control procedure by identifying the non-standard equipment signal N8F or setting the device.

Structure of the Invention In order to achieve the above object, the transmission control procedure shortening method of the factor cutting device according to the present invention is structured as follows.

That is, according to CCITT Recommendation T30, non-standard equipment signal N
When the 03 machine using AF detects the non-standard equipment signal N8F that allows mutual communication with the other receiver, it does not send the transmitting subscriber identification signal TRI and the device W! A non-standard equipment setting signal NS8 containing identification information ID is sent, and a non-standard equipment signal N8F that is capable of mutual communication with the other receiver is not detected;
Digital Identification No. 411 1) When detecting I8, transmit subscriber identification signal TRI and digital command signal DO8. Furthermore, a device i1 identification information ID bit is added to the non-standard equipment signal NAP to enable transmission setting and transmission setting prohibition setting of the called subscriber identification signal C8I. Further, when detecting a non-standard equipment signal N8F that is capable of mutual communication with the other receiver and includes preamble transmission time reduction information, shortens the preamble time of the control signal transmitted after the detection of the non-standard equipment signal NSF, A non-standard equipment setting signal N88 containing preamble transmission time reduction information is transmitted. Then, when transmitting the non-standard equipment signal N8F, a preamble that includes preamble transmission time reduction information and complies with CCITT recommendation T30 is added.1. When the non-11A semi-equipment setting signal N88 containing the preamble transmission time reduction information is detected, the facsimile is A method for shortening the transmission control procedure is obtained, which aims to shorten the time required for the transmission control procedure of the device.

Next, a preferred embodiment of the present invention will be specifically explained with reference to the drawings. Fig. 3 is a flowchart showing an embodiment of the present invention. At the beginning, it waits for the digital identification signal DI8, and if the digital identification signal DI8 is not received, it branches to NO and goes through another 70-chart (not shown) including a timeout to the beginning of the flowchart as indicated by the dotted line. return. When digital identification signal DI8 is received, YE
Branch to the power of S and check whether the non-standard equipment signal N8F is received before receiving the digital identification signal DI8. If the non-standard equipment signal N8F is received after the digital identification signal DI8 is received and before the digital identification signal DIS is received, the compatibility of the non-standard equipment signal NSF is checked.The format of the 0 NSF frame is shown in FIG.

In the figure, reference number 1 indicates the country code, 2Fi mechanical code, 3 indicates the e & building code, 4F1 function, device identification information ID, etc., each of which is separated by n bytes. PIF in non-standard fil signal NSF
If fields 1 to 3 are matched, branch to YES,
A non-standard equipment setting signal NS8 containing more information is sent.

Digital identification signal DI8 reception non-standard equipment signal NSF
If NSF' is not received, or if codes 1 to 3 in the FIP field are not verified even if NSF' is received, a transmitting subscriber identification signal TRI and a digital command signal DC8 are sent.

5 is a diagram showing a part of the control procedure in the case of NSF compatibility in the flowchart of FIG. 3, and FIG. 6 is a diagram showing a part of the control procedure in the case of non-N8F compatibility in the flowchart of FIG. As a result, if there is non-standard equipment signal N8F:I compatibility, the identification information is provided by the non-standard equipment setting signal N88, and if there is no NSF compatibility, the identification information is provided by the transmitting subscriber identification signal T8I. By sending identification information, if there is N8F compatibility, that is,
The sending subscriber identification signal TRI can be omitted in communication within the company's own equipment, and the transmission time can be shortened by about 0.75 seconds.

Next, the flowchart shown in FIG. 7 will be explained. The figure is a flowchart showing whether or not there is communication with other models.
If there is no communication with other models, or if communication is only between immediate payment own devices, set to prohibit the transmission of the called subscriber identification signal Exit setting of user identification signal C8I is performed. The specific setting method is based on a tip switch inside the device. Figure 8 shows part of the control procedure for communication between in-house equipment using this setting. In this case, the other party is identified using the ID information set in the non-standard equipment signal NSF, and communication with other models is A part of the control procedure in this case is shown in FIG. 9. In this case, the called party can be identified using the called subscriber identification signal CHI. Therefore, in the case of communication only between own devices, the called subscriber identification signal number i C8I can be omitted, and the transmission time can be shortened by about 0.75 seconds.

Next, the flowcharts shown in FIGS. 10 and 11 will be explained. The flowchart in FIG. 10 shows that when the digital identification signal DI8 is received and the non-standard equipment signal N8F containing the preamble shortening information is detected, the preamble of the control signal to be transmitted thereafter is shortened and the preamble shortening information is not included. This indicates that the preamble of the control signal is not shortened when the non-standard equipment signal N8F is not detected.

When the non-standard equipment setting signal N88 containing the 11th v4Fi preamble shortening information is detected, the preamble of the control signal to be sent thereafter is shortened, and the non-standard equipment setting signal NSB containing the preamble shortening information is detected. When there is not,
This indicates that the control signal is not shortened. 1st v!
In the diagram of the control procedure of J, TSI%N88 (DC8
), CFR, EOP, MCF, and DCN preamble from 1 second to 0.4 seconds, it is possible to shorten the time required for the control procedure by 3 seconds for each pass.

Including the procedure shortening described above, it is possible to shorten the transmission control procedure by about 4.5 seconds in total.

It goes without saying that the above control can be easily realized by using a processor and its software.

Effects of the Invention As explained above, the present invention provides non-standard equipment signal NSF.
When the called subscriber identification signal TSI is identified, the sending of the subscriber identification signal TSI is prohibited and the response is made with only the non-standard equipment setting signal NSS, or the called subscriber identification signal C8I is
By adding preamble shortening information to the non-standard equipment signal N8F and the non-standard equipment setting signal NSS, it is easy to shorten the preamble time after the detection of the control signal. can be shortened.

[Brief explanation of the drawing]

Figure 1 is a diagram showing the transmission control procedure of the 03 aircraft in accordance with CCITT Recommendation T30, Figure 2 is a diagram showing the format of the control signal by binary code, Figure 3 is a flowchart showing one embodiment of the present invention, Figure 4 shows non-standard equipment signal NSF
Figure 5 is a diagram showing a frame format; Figure 5 is a diagram showing a part of the control procedure for the case of NSF compatibility in Figure 3; Figure 6 is a diagram showing a control procedure for the case of NSF compatibility in Figure 3. Figure 7 showing a part of
The figure is a flowchart showing whether there is communication with other models, @8
The figure shows a part of the control procedure between in-house equipment, Fig. 9 shows a part of the control procedure between other models, and Figs. 10 and 11 show other embodiments of the present invention. Ruru flowchart. 1...Country code, 2...Mechanical code, 3...
・Code including model, 4...function, ID, etc. Patent applicant Nippon Kanki Co., Ltd. Agent Patent attorney Kumagai Yutabu Tei O-! y-Joihaku 1 figure 2m M5 (1 scale C Shintuna 8 figure @9 (2) foil 10 (!1゜

Claims (4)

[Claims] (1) In accordance with CCITT Recommendation T30, when a non-standard equipment signal that allows mutual communication with the other receiver is detected in the 03 equipment that uses a non-standard equipment signal, it does not send a transmitting subscriber identification signal but includes equipment identification information. transmitting a non-standard equipment setting signal, and transmitting a transmitting subscriber identification signal and a digital command signal when a digital identification signal is detected without detecting a non-standard equipment signal capable of mutual communication with the receiver; A method for shortening transmission control procedures for facsimile machines. (2) Further characterized in that an equipment identification information bit is added to the non-standard equipment signal to enable transmission setting and transmission prohibition setting of the called subscriber identification signal.
The facsimile device transmission control procedure shortening method described in item 1). (3) In the G'3 machine using non-standard equipment signals according to CCITT recommendation T30, the mutual communication value with the receiving party 1-a is 0.
■When a non-standard equipment signal containing preamble transmission time reduction information is detected by the function, the preamble time of the control signal sent after the detection of the non-standard equipment signal is shortened, A transmission control procedure shortening method for facsimile machines whose characteristic is to send standard equipment setting signals. (4) When a non-standard equipment signal is sent, a preamble that includes preamble transmission time reduction information and complies with CCITT Recommendation T30 is added, and a non-standard equipment setting signal that includes the preamble transmission time reduction information is detected. 3. The transmission control procedure shortening method for a facsimile machine according to claim 3, further comprising: reducing the preamble time of the control signal sent after the detection of the non-standard equipment setting signal.