JPH0321134A - Multiple address communication control system - Google Patents

Abstract

PURPOSE:To reduce the line holding rate of a master station, to distribute a line using rate (for communication cost) to the whole network station and to improve the efficiency of network operation by proving a multiple address communication function on a master station and slave stations. CONSTITUTION:In the case of executing the multiple address communication of the same image information from a facsimile equipment in the master station 1 to facsimile equipment in the slave stations 2 to 4, the station 1 specifies a destination station to be multiple-addressed and forms multiple address destination information. Then a destination selecting circuit 28 in the station 1 is driven, a call signal is sent to the station 2 to be the 1st destination station based upon the multiple address destination information, and after confirming the existence of the multiple address communication function from a function display signal returned from the station 2, the multiple address destination information, the image information, etc., are transmitted. The multiple address destination information, the image information, etc., are transmitted from the station 2 having the same constitution as that of the station 1 to the station, from the station 3 to the station 4 by the similar procedure to the station 1. Consequently, the line holding rate (for communication cost) of the station 1 can be reduced, the using rate of the line can be distributed to the whole network and the efficiency of the network operation can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a broadcast communication control system for transmitting the same image information to a plurality of stations.

(Example) Some conventional technology facsimiles have a broadcast messenger function that sends the same image information to multiple destinations (for example,
Fujitsu Technical Report 1 9 8-1\'OL, 35 No. 6, page 709 “High-speed digital facsimile F
A C O M F A X 2000/4000
series”).

In such broadcast communication, the master station (
3l) has multiple destination stations (slave stations (33) (34) (35)
), the same image information is repeatedly sent to.

(c) Problem to be solved by the invention 1 In the broadcast communication control system described in 2, the master station (31) always becomes the calling station and uses the line, so the line of the master station (31) is held. There is a problem that communication rates become high, communication for other purposes is restricted, and communication costs are also concentrated at the master station (31).

(2) ゛Means for solving the problem The present invention provides the same image information from the parent j13) from the first to the first]
(n is an integer greater than or equal to 2) in a broadcast communication control system in which the master station transmits information about at least a second to a first slave station to the first slave station. transmitting broadcast destination information and both information, while the first slave station includes information of at least third to first slave stations to the second slave station based on the received broadcast destination information. This is a broadcast communication control method characterized by transmitting broadcast destination information and image information.

(e) Effect When the same image information is transmitted to multiple destinations, the line holding rate of the master station is reduced, and the line usage rate (communication cost) is distributed across the network stations. Therefore, network operation efficiency can be improved.

(f) Example Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a conceptual diagram of the operation of the embodiment of the present invention, FIG. 2 is a block diagram of a facsimile machine of the embodiment of the present invention, FIG. 3 is a time chart showing the communication sequence of the embodiment of the present invention, and FIG. Figures (a) to (e) are diagrams showing examples of the structure of broadcast destination information.

In Fig. 1, (1) is the master station facsimile device, (2
)(3)(4) are slave station facsimile machines.Next, the master station facsimile machine will be explained with reference to FIG.

(20) is an original reading circuit that optically reads the transmitted original, converts the read black and white data into electrical signals, and outputs an image signal; (21) encodes the image signal supplied from the original reading circuit (20). (27) is a network control circuit (hereinafter referred to as NCU);
, (26) is a modulation/demodulation circuit connected to the NCU (27) and modulates the encoded signal sent to the telephone line and also demodulates the encoded signal received from the telephone line; (22) is the modulation/demodulation circuit (26) connected to the NCU (27); ) is a decoding circuit that decodes the encoded signal demodulated by the decoding circuit (23) and outputs an image signal.
(2) is a recording circuit that outputs a visible image based on the image signal supplied from (24), a microprocessor (hereinafter referred to as CPU) that controls each part; (25) is a memory circuit with a floppy disk, hard disk, IC memory, etc. that stores the transmitted and received information, and (28) is a memory circuit that stores the image information stored in the memory circuit (25) to which destination. Selection 3 4 This is a destination selection circuit for designation. In addition, slave station (2)
The structure of (3) and (4) is the same as that of the master station (1), so the explanation thereof will be omitted.

Now, in order to perform broadcast communication according to the present invention, first the master station (1)
In this step, the destination station to which the broadcast should be sent is specified and the broadcast destination information is edited as shown in FIG. 4(a).

Thereafter, when broadcast communication is started in the master station (1), processing is performed as shown in FIG. That is, the destination selection circuit (28) is driven based on the broadcast destination information, and a paging signal (101) is sent to the slave station (2), which is the first destination station. On the other hand, the facsimile device of slave station (2) is N C
Detecting the calling signal (101) by U (27),
The CPU (24) drives the modulation/demodulation circuit (26) and sends a function display signal (l02) for notifying the function of the slave station (2).
) is sent to the master station (1). After confirming that the slave station (2) has a broadcast communication function based on the received function display signal (102), the master station (1) performs communication control including broadcast destination information as shown in FIG. 4(b). A signal (103), an image signal (104) containing image information, and an image information end notification (105) are transmitted to the slave station (2). The slave station (2) stores the received broadcast destination information and image information in a memory circuit (25), while converting the image information into image information by a decoding circuit (22) and recording it in a recording circuit (23). do. After that, slave station (2)
sends a broadcast request acknowledgment signal (106) to the master station (1) and disconnects the line.

Next, the slave station (2) drives the destination selection circuit (28) based on the broadcast destination information received from the master station (1), and sends a paging signal (201) to the slave station (3), which is the second destination station. ) is sent. On the other hand, the facsimile device of slave station (3) is NCU (
27) detects the calling signal (201) and sends the CP
The modulation/demodulation circuit (26) is driven by U (24), and the slave station (
A function display signal (202) for function notification of step 3) is transmitted to the slave station (2). After confirming that the slave station (3) has a broadcast communication function from the received function display signal (202), the slave station (2) sends a communication including broadcast destination information as shown in FIG. 4(C). A control signal (203), an image signal (204), and an image information end notification (205) are transmitted to the slave station (3).

The slave station (3) stores the received broadcast destination information and image information in the memory circuit (25), while converting the image information into image information by the decoding circuit (22) and records it in the recording path (23). Turn muddy green. Thereafter, the slave station (3) sends an in-phase request acknowledgment signal (206) to the slave station (2) and disconnects the line.

Next, the r station (3) drives the destination selection circuit (28) based on the broadcast destination information received from the slave station (2), and sends a paging signal ( 301) is sent. On the other hand, the facsimile device of slave station (4) is NCU
(27) detects the calling signal (301) and C1
) U (24) drives the modulation/demodulation circuit (26), and the slave station (
A function display signal (302) for function notification of step 4) is transmitted to the slave station (3). After confirming that the slave station (4) has a broadcast communication function from the received function display signal (3 02 ), the slave station (3) transmits a communication including broadcast destination information as shown in FIG. 4(d). control signal (303), image signal (304),
and sends an image information end notification (305) to -r station (4).

The slave station (.1) stores the received broadcast destination information and image information in the memory circuit (25), and converts the image information into image information by the B converting circuit (22), and then outputs the image information to the recording circuit (25).
23). After that, the slave station (4) becomes the slave station (3)i:
1, sends a broadcast request acknowledgment signal (306) and disconnects the line.

A slave station (4), which is a terminal station of the Dowa destination station, uses a destination selection circuit (28) based on the broadcast destination information received from the slave station (3).
Drive the ring signal (IQl) to the master station (1)
'5 transmission, function display signal (402) from master station (1)
After confirming the above, the master station (
1) sends a communication result information acknowledgment signal (404) to the r station (4), then disconnects the line and creates a communication result report;
A series of broadcast communications control ends.

(G) Effects of the Invention As detailed in Section 12 below, the broadcast communication control system of the present invention has the following effects:
Since the master station does not become the calling station for all broadcast communications, the line congestion rate of the master station is reduced, and the line usage rate (communication cost) is distributed across the network stations, improving network operational efficiency. You can improve your performance.

[Brief explanation of the drawing]

FIG. 1 is a conceptual diagram of the operation of the embodiment of the present invention, FIG. 2 is a block 78 diagram of a facsimile machine of the embodiment of the present invention, and FIG. 3 is a time chart showing the communication sequence of the embodiment of the present invention. 4(a) to 4(e) are diagrams showing examples of the structure of broadcast destination information, and FIG. 5 is a conceptual diagram of a conventional °C servo. (]) Master station, (2) (3) (4), final station, (20
) 臘 Draft reading g circuit, (2l)...encoding circuit, (22)
Restoration circuit, (23)...recording circuit, (24)...C
PU, (26)・Modulation/demodulation circuit, (27)・NCTj,
(28)...Destination selection circuit.

Claims (1)

[Claims] 1. In a broadcast communication control system in which a master station transmits the same image information to first to nth slave stations (n is an integer of 2 or more), the master station transmits the same image information to the first to nth slave stations. The first slave station transmits broadcast destination information and image information including information of at least second to nth slave stations to the slave station, while the first slave station transmits broadcast destination information including information of at least second to nth slave stations, and the first slave station transmits broadcast destination information including information of at least second to nth slave stations, while the first slave station transmits broadcast destination information to the second slave station based on the received broadcast destination information. A broadcast communication control method characterized in that broadcast destination information and image information including information on at least third to nth slave stations are transmitted to a station.