JP2577790B2 - Data communication device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention includes a data communication device, particularly, a storage unit in which identification information of a broadcast destination is stored in advance, and a relay broadcast request station simply issues a relay broadcast instruction. The present invention relates to a data communication device that broadcasts received data to a pre-registered broadcast destination upon receiving a signal.

2. Description of the Related Art Conventionally, in an image communication apparatus such as a facsimile apparatus, a broadcast function of transmitting the same image information to a plurality of partner stations has been known. There is also known a relay broadcasting system in which this broadcasting function is combined with a relay function, and a relay station receiving an instruction from a requesting station broadcasts to a previously registered broadcasting destination.

[Problem to be Solved by the Invention] In the above-mentioned conventional relay broadcast system, transmission is unconditionally performed to all registered broadcast destinations. For this reason, if a relay request station in a relay station is registered as a broadcast destination, transmission is performed to all registered broadcast destinations. There was a problem that transmission was performed.

 An object of the present invention is to solve the above problems.

[Means for Solving the Problems] In order to solve the above problems, in the present invention, a receiving means for receiving data, a storage means for storing identification information of a broadcast destination in advance, and Transmitting means for transmitting the data received by the receiving means; means for receiving a relay broadcast instruction signal from the relay broadcast requesting station and identification information of the relay broadcast requesting station; and responding to the relay broadcast instruction signal. Control means for causing the transmission means to execute broadcast transmission for the broadcast destination stored in the storage means, wherein the control means receives information on the broadcast destination from the relay broadcast request station The received data is broadcasted in accordance with the identification information of the broadcast destination in the storage means, and whether the identification information of the relay broadcast request station exists in the identification information of the broadcast destination in the storage means Or not, Of prohibited broadcast transmission to the relay broadcast request station according to the identification,
A configuration is adopted in which the broadcast is transmitted to a destination excluding the relay broadcast request station from the broadcast destination of the storage means.

[Operation] According to the above configuration, when a relay broadcast request is received, it is determined whether or not the identification information of the pre-registered broadcast destination in the storage means includes the identification information of the relay broadcast requesting station. If the broadcast destination of the storage means includes the relay broadcast request station, the broadcast transmission to the relay broadcast request station is prohibited, and the broadcast transmission is performed to the other broadcast destinations. It is.

EXAMPLES Hereinafter, the present invention will be described in detail based on examples shown in the drawings. FIG. 1 shows a basic configuration of a facsimile apparatus operating as a relay station according to an embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes a main control unit for controlling the operation of the entire apparatus, which comprises a microprocessor, a ROM (program memory) 1a, a RAM 1b for a work area, and the like. The following circuit members are connected to the main control unit 1, and the main control unit 1 controls each circuit according to a program described later. The RAM 1b is used as an image memory for storing image data to be transmitted / received or broadcast in addition to the work area of the main control unit 1.

First, reference numeral 2 denotes a reading unit including a CCD image sensor and a document conveying mechanism, and reference numeral 3 denotes a recording unit including a thermal printer or a laser printer.

Reference numeral 4 denotes a communication control unit including a modem, an NCU (network control device), a call signal detection circuit, a dialing circuit, etc., reference numeral 5 denotes a telephone, reference numeral 6 denotes a communication line (telephone line in this embodiment), and reference numeral 7 Denotes an operation input unit including a keyboard and the like, and 8 denotes a display unit including an LCD, an LED, and the like. The communication control unit 4 has a function of outputting at least a known automatic transmission / reception and a corresponding dial signal to the line 6 based on the telephone number data input from the main control unit 1.

In this embodiment, the main control unit 1 has a request office telephone number memory.
20 is connected.
It is composed of a rewritable memory such as M or EEPROM, and is capable of registering, for example, up to 10 telephone numbers of transmitting stations that may make a relay request. As shown in FIG. 2A, the storage format of the request office telephone number memory 20 is composed of fields f01 to 10 each having a byte number in which telephone number data of about 10 to several tens of digits can be registered.

In this embodiment, the telephone number registered in the requesting station telephone number memory 20 indicates that the station is a partner station that can make a relay request to the apparatus, and at the same time, there is a relay request from that station. Moreover, if the station is included in the partner station to be relayed, it is used to prevent unnecessary transmission to the station.

Another memory 30 connected to the main control unit 1
Can register, for example, a maximum of 99 telephone numbers of partner stations to which images should be relayed in response to a relay request. Similarly to the request station telephone number memory 20, the broadcast destination telephone number memory 30 has fields g01 to 99 each having a byte number in which about 10 to several tens of digits of telephone number data can be registered as shown in FIG. Be composed.

Request office telephone number memory 20, broadcast destination telephone number memory
It is assumed that the telephone number data stored in 30 is input through a predetermined registration operation from the operation input unit 7.

Next, the operation in the above configuration will be described with reference to FIG. 3 and FIG. FIGS. 3 and 4 show the flow of a reception and broadcast transmission control program executed by the main control unit 1, respectively. The procedure shown in each figure is microcoded and stored in the ROM 1a.

In the case of performing image reception, a pre-communication procedure in steps S1 to S3 and S11 in FIG.

That is, in step S1, DSS connected to an NSS (non-standard device setting) signal, a TSI (transmitter station identification) signal, etc.
A CS (digital command) signal is received, and subsequently, in step S2, training and a TCF (training check) signal are received. The reception of the procedure signal is performed via the communication control unit 4.

In step S3, the quality of the reception result of the TCF signal is determined. If the result is not good, an FTT (train failure) signal is transmitted in step S11, and the process returns to step S1.

On the other hand, if the training result is good in step S3, it is received in steps S4 to S10 (NSS, TSI
And) determine the operation mode according to the content of the DCS signal. It is assumed that the relay request is made using a predetermined facsimile information field of the NSS signal as in the conventional case.

First, in step S4, it is determined whether there is a relay request. That is, when the NSS signal is not received, and when the relay request is not received by the NSS signal, step S10
Then, the CFR signal is transmitted and normal reception is performed. If a relay request has been received by the NSS signal, the process proceeds to step S5.

In step S5, it is determined whether or not a TSI signal has been received. If no TSI information has been received, the telephone number of the transmitting station is unknown if there is no TSI information. In step S9, a DCN (disconnect command) signal is transmitted and the relay request is rejected I do.

If a TSI signal is received in step S5, steps S6 and S
At 7, the validity of the requesting station is determined. Here, first, T
It is determined whether the telephone number of the transmitting station (relay requesting station) identified by the SI signal is registered in the requesting station telephone number memory 20. It is determined whether or not the telephone number of the transmitting station is registered in the requesting station telephone number memory 20, and if it is not registered, the relay is refused because it is a partner without the relay request right,
In step S9, a DCN signal is transmitted to disconnect the line.

Note that the above telephone number collation is performed by comparing the telephone number data in the TSI signal with each field fn in the requesting station telephone number memory 20.
Is performed by collating the telephone number data of
This is performed only on the numeral part excluding the collation data space. In reality, it is not always necessary to collate all digits of the telephone number, and collation of only the lower six digits is sufficient.

If the same telephone number as that in the TSI signal is registered in step S6, the process proceeds to step S7, and it is determined whether at least one valid data is registered in the broadcast destination telephone number memory 30. . If there is no valid data, the relay is rejected, and a DCN signal is transmitted in step S9 to disconnect the line. If there is valid data, the telephone number of the relay requester is stored in the work area of the RAM 1b in the main control unit 1, and in step S8, a CFR (reception standard confirmation) signal is transmitted to receive the relay, and the relay is received. The image is received by the image memory.

If the relay request is accepted according to the above procedure, the fourth
Relay broadcast transmission is performed according to the procedure shown in the figure. At this stage, the image data to be relayed is in RAM1b, and the telephone number of the requesting station is RAM
1b, the telephone number of the other station to be broadcasted is stored in the broadcast destination telephone number memory 30.

First, in step S40, the content of a counter N for counting the number of broadcast destinations and controlling the broadcast destinations is set to n = 1, and preparations for starting broadcast are made.

Next, according to the contents of the counter N, the data of the field gn of the broadcast destination telephone number memory 30 is referred to. If not registered, the process proceeds to step S44, where the contents of the counter N is set to n = n + 1. If data is registered in the field gn of the broadcast destination telephone number memory 30, the data is read out, and step S42 is executed.
In step 1, check with the telephone number of the relay requester stored in RAM1b
Proceed to S44.

In step S42, if the relay request source does not match the broadcast destination, the process proceeds to step S43, and a call is made based on the data read from the broadcast destination telephone number memory 30, and the relay stored in the RAM 1b is performed. Send the requested image. When the transmission is completed, the process proceeds to step S44, where the count value n of the counter N is set to n = n + 1. In step S45, it is determined whether or not the value of n has exceeded the maximum value (here, 99), and whether or not the broadcast processing has been performed up to the final destination. If not, the flow returns to step S41 to continue the broadcast operation. .

According to the above embodiment, the partner station having the right to make a relay request is stored in the requesting station telephone number memory 20, and the relay request is accepted only from the stored partner station. At the time of relay transmission, if there is a station that has requested the relay of the image information among the other stations to be relayed, the broadcast to that station is not performed, so that image transmission to the transmission source can be prohibited, There is an excellent effect that unnecessary communication cost and processing time are not consumed.

In the above embodiment, there is only one group of relay broadcast destinations, and broadcast is performed to the same destination regardless of which relay request station is requested. By adding information to be associated with one broadcast group for each relay request source, a more advanced relay broadcast system can be realized. In this case, the request office telephone number memory 20 or the broadcast destination telephone number memory
It is conceivable to store ID information indicating a group together with the telephone number in 30 and select a partner station to relay and transmit based on this ID information.

Further, in the above embodiment, the telephone number of the broadcast destination is directly input by the operation input unit 7 and the broadcast destination telephone number memory 30 is stored.
Although all the digits of the telephone number are stored in the storage unit, a method of storing only the code indicating the correspondence with the telephone number, such as one-touch dialing or abbreviated dialing, as the information of the telephone number broadcasting destination of the partner station may be used. In this case, the required memory capacity of the broadcast destination telephone number memory 30 can be reduced.

In the above description, it is assumed that a telephone line is used. However, it is needless to say that similar control can be performed with other lines using a selection number corresponding to a telephone number.

[Effects of the Invention] As is apparent from the above, according to the present invention, when a relay broadcast request is received, the identification information of the relay broadcast request station registered in advance in the storage unit is stored in the storage unit. If the broadcast destination of the storage means includes a broadcast requesting station, the broadcast transmission to the relay requesting station is prohibited, and other broadcasts are prohibited. Adopting a configuration that broadcasts to the broadcast destination, it prevents unnecessary communication that also broadcasts to the relay broadcast requesting station, and prevents wasteful communication cost and processing time from being wasted. Furthermore, since the identification information of the broadcast destination is registered in the storage means in advance, the communication with the relay broadcast request station can be performed at high speed without receiving the information of the broadcast destination from the relay broadcast request station. And once registered, the broadcast can be performed easily afterwards. effective.

[Brief description of the drawings]

FIG. 1 is a block diagram of a facsimile apparatus embodying the present invention, FIG. 2 (A) is an explanatory view showing the configuration of a telephone number memory of a relay request station in this embodiment, and FIG. 2 (B) is a broadcast. FIG. 3 is an explanatory diagram showing a configuration of a destination telephone number memory, FIG. 3 is a flowchart showing a receiving operation of a relay station, and FIG. 4 is a flowchart showing an operation procedure when broadcasting a relay image. DESCRIPTION OF SYMBOLS 1 ... Main control part, 2 ... Reading part 3 ... Storage part, 4 ... Communication control part 5 ... Telephone 7 ... Operation input part, 8 ... Display part 20 ... Request station telephone number memory 30 ... … Broadcast destination phone number memory

Claims (1)

(57) [Claims] 1. A receiving means for receiving data, a storage means for storing identification information of a broadcast destination in advance, a transmitting means for transmitting data received by the receiving means in a broadcast mode, a relay broadcast request Means for receiving a relay broadcast instruction signal and identification information of the relay broadcast requesting station from a station; and responding to the relay broadcast instruction signal, transmitting the broadcast destination to the broadcast destination stored in the storage means. Control means for executing a broadcast transmission, the control means does not receive the information of the broadcast destination from the relay broadcast requesting station, the received data according to the identification information of the broadcast destination of the storage means And whether or not the identification information of the relay broadcast requesting station is present in the identification information of the broadcast destination in the storage means, and broadcast to the relay broadcasting requesting station according to the identification. Information transmission is prohibited and the Data communication apparatus, characterized in that to broadcast transmission from the broadcast destination of stages to a destination other than the relay broadcast request station.