JPS6229256A - Facsimile communication system - Google Patents

Abstract

PURPOSE:To reduce communication time and to prevent reversing of a page number of starting the transmittion of received picture information to a recep tion side equipment from a store and forward equipment when one unit of picture information is received. CONSTITUTION:When the 1st page of transmission data transferred from a terminal equipment 10 is stored, the store and forward device 12 controls an exchange 11 of the down station, an exchanger 19 of a communication opposite party and a line are connected to send the transmission data added with control information including a system serial number, a page number and final page information to a store and forward equipment 20 at each page. When the trans mission data of the final page are received to the store and forward equipment 20, an operation control section 14 discriminates whether or not no missing number exists in the page number of control information stored in a storage section 17 and has the continuity and when the continuity exists, a file of facsim ile picture information stored in a storage section 16 is rearranged in the order of pages. When the arrangement of the file is finished, facsimile picture informa tion is transferred to a destination facsimile terminal equipment 21 in the unit of pages via the exchange 19.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a facsimile communication M system for a facsimile network that uses a storage device to transmit data.

[Technical Background of the Invention] Conventional methods generally include a message exchange method and a variable length packet exchange method.

In the message exchange method, one page of one message is the unit of management, and all the messages for one communication are stored and then transferred to the other party, and the variable length packet exchange method is Both signals were divided into variable-length packets of several bytes, and these packets were transferred to the communication partner as a unit of management.

[Problems with the background art] However, in the message exchange method, there is a problem that if the number of pages for one communication is large, it takes a long time to transfer it to the communication partner's terminal. ,
There is a problem in that the order of packets is reversed when transferred to the communication partner's terminal due to packet delays due to differences in transit routes and retransmission.

[Object of the Invention] The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a facsimile communication method that shortens communication time even for communication with a large number of true numbers and prevents reversal of page numbers. With the goal.

[At Essentials of the Invention] The present invention provides a method for receiving at least one unit of image information without waiting for a storage device interposed between facsimile devices to receive all image information for one communication from a sending device. At this time, the above objective is achieved by starting the transmission of the received image information to the receiving device.

[Embodiments of the Invention] Examples of the present invention will be described in detail based on the drawings of FIGS. 1 to 5.

FIG. 1 is an example of a functional configuration diagram of a storage device according to the present invention, in which facsimile transmission data received from a facsimile terminal 10 (described later) is controlled by an arithmetic control unit 14 via a communication control unit 13 of a storage device 12. Among the above transmission data, facsimile image information passes through the internal bus 15 and is stored in the storage section 16.
is accumulated in

Further, among the transmission data, control information including information such as the system serial number, page number, and last page is similarly stored in the storage section 17 via the internal bus 15. When transmitting the transmission data to the communication partner, the arithmetic control section 14 determines the storage device 20 of the communication partner, which will be described later, based on the control information stored in the storage section 17. Then, the calculation control unit 14 stores v51 along with the control information shown in FIG.
The facsimile image information stored in 6 is sent to communication control unit 1.
8 to the communication partner storage device 20 in page units.

FIG. 3 is a system configuration diagram of the present invention using the storage device described above, and FIG. 4 is a diagram showing its control procedure.

Information such as the calling terminal number and destination number is sent from the facsimile terminal 10 via the exchange 11 to the storage section! 12, the storage device transfers the system serial number information to the terminal 10,
Notifies storage preparation completion.

When the first page of the transmission data transferred from the terminal 10 is accumulated, the storage device 10 controls the exchange 11 of its own station, connects the line with one of the communication partner exchanges, and stores the system serial number information in the storage device 20. Transmission data to which control information including page number information and final page information is added is transmitted for each page. In response to a bit error between storage devices that occurs at this time, the transmitted data is retransmitted using the facsimile ill 111 procedure, and in response to a failure during communication (line disconnection), retransmission is performed page by page. Furthermore, in the case where data is transmitted through multiple stages of storage devices, since the destination of the central line storage device is not the own station, transmission data is simply transferred page by page to the target storage device.

and a destination storage device 20 having the functions shown in FIG.
When the last page of transmission data is received, the storage device 20 operates based on the flowchart shown in FIG. In other words,
When reception of the final page is confirmed in step 101, the process proceeds to step 102, and the arithmetic control unit 14 determines whether the page numbers of the control information stored in the storage unit 17 have no missing numbers and are continuous. If there is a missing number, the process advances to step 103 and waits temporarily until the missing transmission data is received.

If it is determined in step 102 that there are no missing numbers and there is continuity, the process proceeds to step 104 and the files of facsimile image information stored in the storage section 16 are rearranged in page order.

When the file arrangement is completed, in step 105 the exchange v
The facsimile image information is transferred page by page to the destination facsimile terminal 21 via j, 19. When the transfer is completed, this process ends, and the accumulated ¥A cod waits until the next communication begins.

According to the embodiment of the present invention, the transmitted data is arranged in page order in the storage device on the receiving side, so that reversal of page numbers can be prevented. Therefore, even when searching for a manuscript, it is possible to specify a page, and there is an effect that unnecessary pages do not need to be output.

[Effects of the Invention] As explained above, the present invention allows the storage device interposed between the facsimile machines 5 to store at least one unit of image information without waiting for all the image information for one communication to be received from the sending device. When information is received, the transmission of the received image information to the receiving device is started, so the delay time for one communication due to relay transmission and reception is the time equivalent to one page of communication for each relay between storage devices. The communication time can be shortened by simply adding .

[Brief explanation of the drawing]

FIG. 1 is an example of a functional configuration diagram of the storage device of the present invention, FIG. 2 is a diagram showing control information of the present invention, and the third ti! ! 1 is a system configuration diagram of the present invention, FIG. 4 is a diagram showing the control procedure of FIG. 3, and FIG. 5 is a diagram showing a flowchart of the N8% device on the receiving side. 10.21...Facsimile terminal, 11.19...Switching machine, 12.20...Storage device,
13.18... Communication control unit, 14... Arithmetic control unit,
15...Internal bus, 16...Storage section, 17...Storage section.

Claims (2)

[Claims] (1) In a facsimile communication system for a storage device that is interposed between facsimile devices and uses a predetermined amount of image information as one unit and performs relay transmission and reception of image information for one communication made up of multiple units for each unit, the sending side device When at least one unit of image information is received, the transmission of the received image information to the receiving device is started, without waiting for all the image information for one communication to be received. facsimile communication method for storage devices. (2) A facsimile communication system for a storage device according to claim (1), wherein the predetermined amount of image information is an amount of image information corresponding to the length of image information on one document.