JPH0752903B2 - Data communication device - Google Patents

Description

The present invention relates to a data communication device for performing data communication of image data, character code data, and the like.

[Prior Art] Conventionally, an apparatus of this type, for example, a facsimile apparatus has been configured such that all image data transmitted is unconditionally recorded and output without rejecting image reception.

[Problems to be Solved by the Invention] Therefore, since images such as unnecessary advertisements are unconditionally received,
There is a disadvantage that the recording paper is wasted. Further, the line is in use while receiving an image of an unnecessary advertisement or the like, and there is a problem that important information cannot be received when needed.

On the other hand, conventionally, in a facsimile apparatus, a configuration is known in which the telephone numbers of a plurality of communication partners are stored. Although such a configuration is provided to simplify the work of inputting the telephone number of the other party at the time of image transmission, for example, an input unit such as a keyboard for inputting a desired telephone number to an input key called a one-touch key or the like. Enter from to register,
Thereafter, the one-touch key is operated to call the partner station using the registered telephone number. The above functions have the effect of simplifying the operation at the time of image transmission and reducing transmission errors. However, there is also a problem that the registered telephone number is not used at all when transmitting an image, especially in a period other than the calling operation.

[Means for Solving Problems] In order to solve the above problems, in the present invention, it is discriminated whether or not there is an incoming call from a calling station registered in advance, and a predetermined communication procedure is performed according to the discrimination result. When receiving a communication request from a calling station that is not registered in advance, a data communication device that performs data communication based on the procedure sends a procedure signal for calling the operator to the calling station, and The operator is called and the control means for switching from the data communication mode to the call mode in which the caller and the callee can talk is employed.

[Operation] With the above configuration, it is possible to reject data communication that does not meet predetermined conditions such as unnecessary advertisements, reduce unnecessary consumption of recording paper, and obtain important information without delay. Will be possible. When a communication request is received from a calling station that is not registered in advance, the operator is called, the call mode is entered, and a call is made between the calling and called operators. It is possible for the side to decide whether to carry out the intended data communication. Therefore, if the condition setting is incorrect, or communication from a new customer can be performed without omission.

[Examples] Hereinafter, the present invention will be described in detail based on examples shown in the drawings.

FIG. 1 is a block diagram showing an embodiment of a facsimile apparatus according to the present invention. In the figure, reference numeral 7 is for connecting a line terminal to use a telephone network for data communication and for controlling connection of a switching network, It is an NCU (network control unit: network control unit) for switching the connection between the telephone 7A and a facsimile machine below the modem 6 or for maintaining a loop. A telephone 7A is connected to the NCU 7 for line control or for making a call. A modem 6 is connected to the NCU 7 in order to modulate / demodulate and input / output a procedure signal or an image signal to / from the line. Since the input / output signal line on the NCU7 side of the modem 6 transmits serial data, there is one line or parallel data between the modem 6 and the CPU5 (central processing unit) which is composed of a microcomputer element for controlling the operation of the entire device. Are connected by an 8-bit (8) data bus for inputting and outputting.

The CPU 5 is composed of a microcomputer element and the like, and is similarly connected to the two memories 3 and 4 by an 8-bit data bus. An operation unit 1 having a keyboard composed of a numeric keypad or the like is connected to the data bus via a keyboard control unit 2. The keyboard control unit 2 and the operation unit 1 are connected by a 10-bit signal line.

The numeric keypad of the operation unit 1 has keys "0" to "9", and when any one of these keys is pressed, a signal is sent to the detection unit of the keyboard control unit 2 via a 10-bit signal line. To be The 10-bit detection signal is converted into binary data by the conversion unit of the keyboard control unit 2 and sent to the 8-bit data bus. The numeric keypad of the operation unit 1 is used to input a telephone number, and the CPU 5 outputs the telephone number (or ID number etc.) output by the conversion unit of the keyboard control unit 2.
The numerical data corresponding to is stored in the memory 3. The telephone number thus stored in the memory 3 is used not only for the call control by the one-touch key described above but also for the reception control described later.

On the other hand, the memory 4 is used for temporary storage of image data or procedure signals to be transmitted and received.
An area for storing the telephone number sent from the calling side as described later is secured in a part of the area. Of the memories 3 and 4, the memory 3 is composed of a nonvolatile memory element such as an EEPROM, and the memory 4 is composed of a random access memory or the like.

Although not shown in FIG. 1, it goes without saying that an image reading unit, an image recording unit, and the like are provided in addition to these, as in the conventional facsimile apparatus.

Next, the operation of the above configuration will be described.

2 and 3 show the communication operation in the configuration of FIG. 1, FIG. 2 is the control procedure of the CPU 5 of FIG. 1, and FIG. 3 is the calling side and called side corresponding to this. It shows the signals sent and received between the devices of CCITT Recommendation T30.
Signal based on the above).

In FIG. 2, the flows having the same numbers are continuous in that part. The procedure of FIG. 2 is stored in a program storage means such as a ROM (read only memory) not shown.

When the device (called side) of FIG. 1 is called by a ring tone as indicated by reference numeral 30 in FIG. 3, this ring signal is detected by the tonal signal detecting means provided in the NCU 7 and corresponds thereto. Then, the CPU 5 turns on the power of the device.

Subsequently, in step S1 of FIG. 2, the CPU 5 of FIG. 1 sends a CED (callee identification) signal via the modem 6 (third part).
(Figure 31). Subsequently, in step S2, the CPU 5 transmits the three connected signals, that is, NSF (standard device), CSI (callee identification) and DIS (digital identification) signals. (FIG. 3, reference numeral 32). Signal transmission in step S2 is step
Calling side NSS (standard device setting), TSI (calling station identification), DCS (digital command) that responds to the above signals in S3
The process is repeated until the reception of the signal is confirmed.

When the NSS, TSI and DCS signals (reference numeral 33 in FIG. 3) on the calling side are transmitted, the routine proceeds to the detection routine indicated by reference numeral A in FIGS. 2 and 3. That is, in step S4 of FIG. 2, in order to compare the telephone numbers registered in the memory 3 with the telephone numbers of the calling stations without omission, the number (registered number) of telephone numbers already registered in the memory 3 is counted. Set to.

Then, in step S5, the received TSI signal is stored in the memory 4. Then, this number and the telephone number in the memory 3 are compared step by step in steps S6 to S10.

That is, in step S6, it is determined whether or not the comparison work is completed by detecting whether or not the counter is 0. If the counter is not 0, that is, if there are still telephone numbers to be compared. Is the step
In step S8, the first telephone number is read from the memory 3 and is compared with the telephone number of the calling station included in the TSI signal in the memory 4 in step S8. Then, in step S9, the counter is decremented by 1, and in step S10, the collation result of step S8 is determined. If the numbers do not match in step S10, the process returns to step S6 and the above operation is repeated.

If no telephone number match is found even after repeating steps S6 to S10 until the counter reaches 0, step S11
To send a DCN (disconnect command) signal (reference numeral 40 in Fig. 3)
Then, the line is released in step S12, and the operation ends in step S13.

On the other hand, if the telephone number included in the TSI signal matches one of the numbers stored in the memory 3, step S14
And proceed to receive training and TCF (training check) signals (reference numeral 34 in FIG. 3). Step S1
In step 4, it is judged in step S15 whether the training signal of the calling side can be correctly received and whether the check using the TCF signal has been normally performed, and the process proceeds to step S17 or step S15 'depending on the result.

In step S17, the CFR signal (reference numeral 35 in FIG. 3) is transmitted, and in step S18, the image signal of the calling side connected with the training signal at the head is received (reference numeral 36 in FIG. 3). On the other hand, if the training is not normally performed, the FTT (training failure) signal is transmitted in step S15 ', and subsequently in step S16, the calling side again waits for the NSS, TSI, DCS signals to be transmitted. If step S16 is positive,
Returning to the procedure of steps S14 and S15 again, a known fallback process is performed in which training is performed again by performing control such as lowering the transmission rate.

When the image reception ends in step S18, the process proceeds to step S19, and it is determined whether or not the RTC (control return) signal on the transmission side is received. When the RTC signal is not received, the process returns to step S18 and the reception of the image data of one page is repeated. When the reception of one page is completed and the RTC signal is transmitted, the process proceeds to step S20 and waits for the procedure signal by the binary signal of the calling side.

When it is confirmed in step S21 that the signal received in step S20 is an MPS (multi-page) signal indicating that there is a subsequent page, the process proceeds to step S24, and the MCF signal is transmitted in step S24. Then step S18
Then, the control returns to the step (1) to receive the image data of the subsequent page. In step S22, it is determined whether the signal received in step S20 is an EOM signal. When step S22 is affirmed, the NCF signal is transmitted in step S23, and the reception of the NSS, TSI and DCS signals of the calling side is waited in step S25. When the signal is received in step S25, the training operation in step S14 is performed again.

When step S22 is denied, it is considered that the EOP signal (reference numeral 37 in FIG. 3) is transmitted from the calling side,
In S26, the SCF signal (reference numeral 38 in FIG. 3) is transmitted to the calling side. Then, in step S27, the DCN signal (the third
When it receives this signal, it transmits a DCN signal (reference numeral 40 in FIG. 3) to open the line and terminates the receiving operation in step S29.

According to the above configuration, since it is possible to reject the image transmission from the calling station that does not match the telephone number (or ID number) registered in the memory 3 in advance and terminate the communication, it is possible to eliminate an advertisement or the like. It is possible to prevent waste of the recording paper without receiving image information, and to obtain important information without delay. In addition, the transmission of important image information is not hindered by the reception of advertisements and the like.

In the above embodiment, when the registered telephone number and the telephone number of the calling side do not match, the line is unconditionally disconnected and the communication ends, but as shown in FIGS. 4 and 5. By performing such a procedure, it is possible to cause the operators of the calling side and the called side (this apparatus) to make a call and determine whether to transmit / receive an image.

FIG. 4 replaces the routine shown by the symbol A in FIG. 2, and is denoted by the symbol A'here. The procedure not shown in FIG. 4 is exactly the same as that in FIG.

The steps S4 to S10 in FIG. 4 are exactly the same as the steps S4 to S10 in FIG. 2, except that the step S6 is affirmed, that is, the registered telephone number and the telephone number of the calling side are different. This is the process when there is no match. Figure 5 is also third
The same reference numerals as those in the figure are used, and in particular, the portions 34 to 38 in FIG. 3 are shown by blocks with the reference numeral B.

In the procedure of FIG. 4, the counter becomes 0 in step S6,
If a phone number (or ID number) mismatch is confirmed,
In step S30, the PIP signal (reference numeral 50 in FIG. 5) is transmitted to the calling side. When this signal is sent, a pseudo level sound is generated in the calling facsimile machine as in the conventional case.
An operator call is made. On the other hand, a pseudo-bell sound is also generated in step S31 on the side of this apparatus, and the operator on this side is also called by this.

Then, in step S32, the caller and the callee have a call, and it is determined whether or not the caller performs the intended image transmission / reception. When the call ends, step S3
In 3 the line is manually opened using the telephone and the operation ends in step S34. When it is decided to receive the image data that the calling side is trying to send, the calling side operator performs the sending operation again, and sends the image data to the device side.

In the above, an example in which a call mode is entered in the case of a mismatch of telephone numbers or ID numbers, and the line is disconnected when the call ends, in this case, the telephone number of the calling side is registered in the memory 3. If you do not do this, the phone numbers will not match again and communication will be disabled. Therefore, a mode in which the above telephone numbers are compared to determine whether to perform reception,
It is advisable to use a switch to switch between the conventional unconditional reception mode. Alternatively, a method may be considered in which the line is not disconnected even when the call mode ends, and transmission / reception is manually restored.

[Effect] As is apparent from the above description, according to the present invention, data communication is automatically performed in response to a data communication request from a calling station registered in advance, and a calling station not registered in advance. When a data communication request is received from the device, a procedure signal for calling the operator is sent to the calling station, and the operator of the own machine is called to switch from the data communication mode to the call mode. , Can reject useless information such as unintended advertisements, and sends a procedure signal for calling the operator to the calling station in response to a data communication request from a calling station that is not registered. By doing so, both the calling station and its own device can be automatically switched from the data communication mode to the call mode. It is possible to provide an excellent data communication device capable of performing data communication by an al operation and not losing a business opportunity such as a call from a new customer.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a facsimile apparatus according to the present invention, FIG. 2 is a flowchart diagram showing an example of a control procedure in the configuration of FIG. 1, and FIG. 3 is a communication operation according to the procedure of FIG. FIG. 4 is a flow chart showing a different control example in the configuration of FIG. 1, and FIG.
The figure is an explanatory view showing the communication operation according to the procedure of FIG. 1 ... Operation part, 2 ... Keyboard control part 3, 4 ... Memory, 5 ... CPU 6 ... Modem, 7 ... NUC 7A ... Telephone

Claims (2)

[Claims] 1. A data communication device for identifying whether or not an incoming call is from a calling station registered in advance, and performing data communication based on a predetermined communication procedure according to the identification result. When a communication request is received from the station, the procedure signal for calling the operator is sent to the calling station, the operator of the own machine is called, and the calling side and the called side are called from the data communication mode. A data communication device comprising a control means for switching to a call mode in which an operator talks. 2. The data communication apparatus according to claim 1, further comprising means for selecting an operation mode for determining whether or not the data communication is possible and an operation mode for performing unconditional communication.