JP2005223655A - Data telecommunication system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a data telecommunication system which raises the reliability to the regulation of a FAX transmission based on the content of a transmitting document which is transmitted by a FAX. <P>SOLUTION: If the transmitting document is read by the FAX function of a composite machine 11, OCR data is read in the transmission document by the character recognition of the OCR function of the composite machine 11. This OCR data is compared with transmission inhibiting data stored and cumulated in an inhibiting DB 14 in a collating server 13 transmitted through a transmitting DB 12, and a transmittable frequency is calculated. When it is judged that the FAX transmission of the transmission document can be performed based on this transmittable frequency, the FAX transmission is performed by the composite machine 11. On the other hand, when it is judged that the FAX transmission of the transmission document cannot be performed based on this transmittable frequency, the performance of the FAX transmission by the composite machine 11 is stopped through a control signal. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a data communication system that performs character recognition of a transmission document transmitted by FAX.

In a conventional data communication system, a transmission document transmitted by facsimile (referred to as “FAX” in this application) is recognized by an optical character reader (referred to as “OCR” in this application). There is one that creates information data by reading and processing the information data (see, for example, Patent Document 1).
JP 2003-289410 A

  In this regard, in the FAX, a transmission document that has been decomposed into pixels is converted into an electrical signal and transmitted. Therefore, the contents of the transmission document cannot be grasped. It was impossible to restrict transmission. On the other hand, in the OCR, since the character of the transmission document restored by FAX is recognized, it is possible to grasp the content of the transmission document based on the characters constituting the transmission document. If there is a lot of text or if the transmitted document is handwritten, erroneous recognition of characters is likely to occur. Therefore, even if you try to restrict FAX transmission according to the contents of the transmitted document, the reliability of the restriction Was remarkably scarce.

  Therefore, the present invention has been made in view of the above-described points, and provides a data communication system with improved reliability against the restriction of FAX transmission based on the content of a transmission document transmitted by FAX. The task is to do.

  In order to solve this problem, the invention according to claim 1 is a data communication system (for example, data communication systems 1A to 1D), and has a reading unit (for example, a multifunction peripheral) having both a FAX function and an OCR function. 11), an accumulating unit (for example, prohibition DB 14) in which transmission prohibition data is registered, and an approval unit (for example, collation server 13) for determining whether or not FAX transmission is possible are connected to each other, and the reading unit (for example, When a transmission document is FAX-transmitted by the FAX function of the multifunction machine 11), text data recognized from the transmission document by the OCR function of the reading means (for example, the multifunction machine 11) is converted into the approval means (for example, collation). And the approval means (for example, the collation server 13) transmits the transmission permission obtained by comparing the transmission prohibition data and the text data. Based on the frequency, determining whether the FAX transmission of the transmission document is characterized.

  It should be noted that the “transmission document” that is the object of FAX transmission may be all subject to OCR function character recognition, or part of the content may be subject to OCR function character recognition. Alternatively, all of the contents may not be the object of character recognition of the OCR function.

  The invention according to claim 2 is the data communication system (for example, the data communication systems 1A to 1D) according to claim 1, wherein the approval means (for example, the verification server 13) The transmission possibility number is calculated on the basis of the collation degree or the number determined to be the transmission prohibition data.

  Note that the “degree of collation with respect to transmission prohibited data” matches all or part of the character string arrangement pattern of transmission prohibited data among character strings of text data that are sequentially extracted with the same number of characters as transmission prohibited data. The percentage of agreement about what to do. The “number determined to be transmission-prohibited data” refers to the number of character strings having the matching degree of 100%.

  The invention according to claim 3 is the data communication system (for example, the data communication systems 1A to 1D) according to claim 1 or 2, and is connected to the approval means (for example, the verification server 13). An approval terminal (for example, the approval terminal 33), and the approval means (for example, the collation server 13) transmits the transmittable frequency to the approval terminal (for example, the approval terminal 33). It is characterized in that the determination of whether or not FAX transmission is possible is left to the determination at the approval terminal (for example, the approval terminal 33).

  According to a fourth aspect of the present invention, there is provided a data communication system (for example, the data communication systems 1A to 1D) according to any one of the first to third aspects, wherein the approval means (for example, a verification server). 13) is characterized in that when the FAX transmission of the document is disabled, the FAX data to that effect is transmitted to the reading means (for example, the multifunction machine 11).

  That is, in the data communication system of the present invention, the text data is read from the transmission document transmitted by FAX with the character recognition of the OCR function, and the text data is compared with the transmission prohibition data based on the transmittable frequency. It is determined whether the transmission document can be faxed. Therefore, the misrecognition in the OCR function is corrected by the transmittable frequency used in this determination. Therefore, in the data communication system of the present invention, since the reliability of the FAX transmission is restricted based on the content of the transmission document transmitted by FAX, the reliability is enhanced. Information can be prevented from leaking outside.

  In this regard, the transmission possibility number used when determining whether or not the transmission document can be faxed is calculated based on, for example, the degree of collation with respect to the transmission prohibition data or the number determined to be transmission prohibition data. High reliability is ensured by calculation.

  Also, at this time, if the decision of whether or not to send a transmission document by FAX is left to a user who can confirm the transmission possibility level at the approval terminal, the adverse effects that may occur due to being performed automatically and formally are obviated. Can be prevented.

  Further, when it is determined that FAX transmission of a transmission document is impossible, if a notification to that effect is returned by FAX data, it is possible to contribute to the convenience of a person who has attempted to FAX transmission of the transmission document.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a configuration diagram of a data communication system according to the first embodiment. As shown in FIG. 1, the data communication system 1A of the first embodiment includes a multifunction machine 11, a transmission database (referred to as “transmission DB” in this application) 12, a verification server 13, a prohibition database (this application). In this example, 14 is described as “prohibited DB”) and the like are connected by a local area network.

  In this respect, the multi-function device 11 has at least both functions of FAX and OCR, and further, a receiving terminal 34 (having a FAX function) possessed by each of a large number of recipients 24 via a telephone line or the like. Connected. Accordingly, in the multi-function device 11, when the sender 22 transmits the transmission document by FAX using the FAX function, when the FAX transmission destination is designated by the FAX number and the transmission document is read by the FAX function, the transmission document is displayed. Document FAX data is generated by converting the image data into pixels into electrical signals. However, FAX transmission is not performed to the receiving terminal 34 of the recipient 24 specified by the FAX number, and the pending state in which the document FAX data and the FAX number are stored in association with each other is maintained. On the other hand, the OCR function works, and the OCR data converted into text data is created by recognizing characters of the transmitted document. Then, this OCR data is transmitted to the transmission DB 12.

Note that the transmission document that is the object of FAX transmission may be printed or handwritten.
In addition, only characters / symbols that are recognized by the OCR function may be written, or characters may be recognized by the OCR function in addition to the characters / symbols recognized by the OCR function. No graphic or the like may be written, or only a graphic or the like that is not recognized by the OCR function may be written.

  The transmission DB 12 stores and accumulates OCR data received from the multifunction machine 11, and the OCR data is automatically transmitted to the verification server 13.

The verification server 13 is connected to the approval terminal 33 of the approver 23 via a local area network.
The function of the verification server 13 will be described later.

The prohibition DB 14 is connected to the registration terminal 31 of the registrant 21 via a local area network. In this regard, the registrant 21 can store / accumulate important keywords, characters / symbols, and the like that should not be leaked to the outside by FAX transmission from the registration terminal 31 to the prohibition database 14 as transmission prohibition data. In the prohibition DB 14, the transmission prohibition data is transmitted to the verification server 13 in response to a request from the verification server 13.
The registration terminal 31 connected to the prohibition DB 14 and the registrant 21 who operates the registration terminal 31 may be one or plural.

  Next, the function of the verification server 13 will be described with reference to FIG. FIG. 2 is a flowchart showing the function of the verification server 13. As shown in FIG. 2, in the collation server 13, first, in step (hereinafter referred to as “S”) 11, OCR data is received from the transmission DB 12 and transmission prohibition data is received from the prohibition DB 14.

  In S12, the collation server 13 compares the OCR data and the transmission prohibition data, and the collation degree obtained thereby is calculated as the transmittable frequency. Specifically, for example, when “new product A” is received as the transmission prohibition data, if “new product A” is included in a part of the character string of the OCR data, the transmission possible frequency (matching degree) ) Is 100%, and when “new product Δ” is included in a part of the character string of the OCR data, the transmittable frequency (verification degree) is 75%.

  In S13, the collation server 13 determines whether or not FAX transmission is possible based on the transmittable frequency. However, here, it is determined whether or not FAX transmission is possible by the approver 23 that transmits the transmittable frequency as transmittable frequency data from the verification server 13 to the approval terminal 33 and recognizes the transmittable frequency via the approval terminal 33. Is judged. And the result of the judgment which the approver 23 made is transmitted to the collation server 13 from the approval terminal 33 as approval result data.

  At this time, when it is determined that FAX transmission is possible (S13: YES), the process proceeds to S14, and a control signal for performing FAX transmission is transmitted from the collation server 13 to the multi-function device 11, thereby , FAX transmission is executed. In other words, the multifunction device 11 is released from the hold state when this control signal is received from the verification server 13, and the document FAX data is faxed to the receiving terminal 34 of the receiver 24 designated by the fax number. The

  On the other hand, when it is determined that the FAX transmission is not possible (S13: NO), the process proceeds to S15, and a control signal indicating that the FAX transmission is not performed is transmitted from the verification server 13 to the multi-function peripheral 11. The FAX transmission is rejected. That is, the multifunction device 11 is released from the hold state when the control signal is received from the verification server 13. At this time, the document FAX is sent to the receiving terminal 34 of the receiver 24 specified by the FAX number. Data is never sent by fax. The FAX transmission is printed and discharged as a notification document together with a part of the cover page of the document FAX data, and this notification document is used as a clue to a part of the cover page of the document FAX data printed there. To the sender 22.

  As described above in detail, in the data communication system 1 </ b> A according to the first embodiment, in order for the sender 22 to send a transmission document to the receiver 24 by FAX, the transmission document is read by the FAX function of the multifunction machine 11. While the FAX transmission pending state is maintained, the OCR data converted into text data is read from the transmission document by the character recognition of the OCR function of the multifunction machine 11. Then, the OCR data is compared with the transmission prohibition data stored and accumulated in the prohibition DB 14 in the verification server 13 transmitted via the transmission DB 12 (S12).

  At this time, the collation server 13 calculates the collation degree obtained by comparing the OCR data and the transmission prohibition data as the transmittable frequency. For example, in the case where a “new product A” that is transmission prohibition data is described in a transmission document to be FAX-transmitted, it is described in the transmission document by character recognition of the OCR function of the multifunction machine 11. If “New Product A” is correctly recognized as “New Product A” and is included as “New Product A” in a part of the character string of the OCR data, the transmittable frequency (matching degree) is 100. %. On the other hand, due to the character recognition of the OCR function of the multifunction device 11, “new product A” described in the transmission document is erroneously recognized as “new product △”, and “new” When it is included as “Product Δ”, the transmittable frequency (verification level) is 75%.

  This transmittable frequency is transmitted as transmittable frequency data from the verification server 13 to the approval terminal 33, and is used as a judgment material when the approver 23 determines whether the transmission document can be faxed. If the approver 23 determines that the transmission document can be faxed (S13: YES), approval result data indicating the determination content is transmitted from the approval terminal 33 to the verification server 13. . Thereafter, a control signal for performing FAX transmission is transmitted from the verification server 13 to the multi-function device 11 (S14). With this as a trigger, the multi-function device 11 executes FAX transmission.

  On the other hand, when the approver 23 determines that FAX transmission of the transmission document is not possible (S13: NO), approval result data indicating the determination content is transmitted from the approval terminal 33 to the verification server 13. Thereafter, a control signal indicating that the FAX transmission is not performed is transmitted from the verification server 13 to the multi-function device 11 (S15). With this as a trigger, the execution of the FAX transmission by the multi-function device 11 is stopped. The notification document is printed and ejected from 11, and the notification document is delivered to the sender 22, thereby informing the sender 22 that execution of FAX transmission by the multifunction machine 11 has been stopped.

  Therefore, in the data communication system 1A of the first embodiment, even if there is a misrecognition when the transmission document to be faxed is converted to OCR data by the OCR function of the multifunction machine 11, the collation server 13 By comparing the OCR data with the transmission prohibition data, the transmission possibility level is calculated, and based on the transmission possibility level, whether or not the FAX transmission of the transmission document is determined is determined. The adverse effect of erroneous recognition upon determination by the verification server 13 is reduced. Therefore, in the data communication system 1A according to the first embodiment, since the FAX transmission is restricted based on the content of the transmission document transmitted by FAX, the reliability is increased. Therefore, it is possible to prevent important information from being leaked outside.

  In this respect, in the data communication system 1A according to the first embodiment, the collation obtained by comparing the OCR data and the transmission prohibition data with respect to the transmittable frequency used when determining whether or not the FAX transmission of the transmission document is possible. It is calculated with a degree, thereby ensuring a high degree of reliability.

  Further, in the data communication system 1A of the first embodiment, the approval terminal 33 decides whether or not the FAX transmission of the transmission document can be performed, and the approval terminal 33 can confirm the transmission possibility frequency. It is possible to prevent problems that may occur due to being performed automatically and formally.

  In the data communication system 1A according to the first embodiment, when it is determined that FAX transmission of a transmission document is impossible, the MFP 11 indicates that the FAX transmission is rejected on the cover page of the document FAX data. A notification document is printed and discharged together with a part, and this notification document is delivered to the sender 22 using a part of the cover page of the document FAX data printed there as a clue. This can contribute to the convenience of the sender 22 who has tried.

In addition, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the meaning.
For example, in the data communication system 1A of the first embodiment shown in FIG. 1, when it is determined that FAX transmission of a transmission document is possible (S13: YES in FIG. 2), control for performing FAX transmission. A signal is transmitted from the verification server 13 to the multi-function device 11 (S14 in FIG. 2), and triggered by this, the multi-function device 11 executes FAX transmission. In this respect, the configuration shown in FIG. As in the data communication system 1B of the second embodiment, the FAX transmission may be performed directly from the verification server 13 without going through the multifunction machine 11.

However, for this purpose, as in the data communication system 1B of the second embodiment of FIG. 3, a series of data of FAX number, OCR data, and document FAX data is associated with the transmission DB 12 from the multifunction machine 11. Further, the FAX number, the OCR data, and a series of data of the document FAX data are transmitted from the transmission DB 12 to the collation server 13 in association with each other. If it is determined that the transmission document can be faxed (S13: YES in FIG. 2), the document fax data is faxed to the receiving terminal 34 of the receiver 24 designated by the fax number. (S14 in FIG. 2).
On the other hand, when it is determined that FAX transmission of the transmission document is not possible (S13: NO in FIG. 2), a notification document in which the FAX transmission is rejected is described together with a part of the cover page of the document FAX data. Is created by the collation server 13, and the FAX data of this notification document is transmitted from the collation server 13 to the multi-function device 11 as pass / fail FAX data. Then, the multifunction machine 11 prints / discharges the notification document based on the availability FAX data, and the notification document has a part of the cover page of the document FAX data printed there as a clue to the sender 22. Delivered to. Note that this notification document is triggered by the fact that a control signal indicating that FAX transmission is not performed is transmitted from the verification server 13 to the multifunction device 11 as in the data communication system 1A of the first embodiment. 11 may be created.

  In the data communication system 1B of the second embodiment shown in FIG. 3, document FAX data, which is a document of OCR data used when calculating the transmittable frequency (collation degree), is transmitted to the collation server 13. Therefore, all or part of the document FAX data or OCR data specifying the character string that is the target of the transmittable frequency (collation degree) is transmitted from the collation server 13 to the approval terminal 33, and these data are transmitted to the approval terminal. If the monitor display is performed at 33, the approver 23 becomes a suitable judgment material when determining whether or not the transmission document can be faxed.

  Further, in the data communication system 1A of the first embodiment shown in FIG. 1, when it is determined that FAX transmission of a transmission document is not possible (S13: NO in FIG. 2), control for not performing FAX transmission. A signal is transmitted from the verification server 13 to the multi-function device 11 (S15 in FIG. 2). With this as a trigger, the FAX transmission by the multi-function device 11 is stopped, and a notification document is printed and discharged from the multi-function device 11. The notification document is delivered to the sender 22 to notify the sender 22 that execution of FAX transmission by the multi-function peripheral 11 has been cancelled. This point is shown in FIG. As in the data communication system 1 </ b> C of the third embodiment, the sender 22 may be informed by the e-mail that execution of FAX transmission by the multifunction machine 11 has been stopped.

However, for this purpose, as in the data communication system 1C of the third embodiment of FIG. 4, the verification server 13 is connected to the receiving terminals 32 that each of the multiple senders 22 has. Further, the sender 11 of the sender 22 who is going to perform FAX transmission of the transmission document is input to the multifunction device 11, and the sender ID and a series of data of OCR data are sent from the multifunction device 11 to the transmission DB 12. Are transmitted in association with each other, and the sender ID and the series of data of the OCR data are also transmitted from the transmission DB 12 to the verification server 13 in association with each other. If it is determined that FAX transmission of the transmission document is possible (S13 in FIG. 2: YES), a control signal for performing FAX transmission is transmitted from the verification server 13 to the multifunction machine 11 (S14 in FIG. 2). ), Triggered by this, the MFP 11 executes FAX transmission.
On the other hand, if it is determined that FAX transmission of the transmission document is not possible (S13: NO in FIG. 2), a notification document indicating that this FAX transmission has been rejected is created by the verification server 13, and further, the verification server 13 From the mail addresses stored and stored in the mail, and those identified by the sender ID, and based on the mail address, the notification document is received by the sender 22 from the verification server 13 as the notification mail data. 32.

  Further, in the data communication system 1A according to the first embodiment shown in FIG. 1, when it is determined that FAX transmission of a transmission document is possible (S13: YES in FIG. 2), control for performing FAX transmission. When the signal is transmitted from the verification server 13 to the multifunction device 11 (S14 in FIG. 2), the multifunction device 11 performs FAX transmission on the basis of this, and when it is determined that FAX transmission of the transmission document is not possible ( In S13 of FIG. 2, a control signal indicating that the FAX transmission is not performed is transmitted from the collation server 13 to the multifunction device 11 (S15 of FIG. 2), and triggered by this, the FAX transmission by the multifunction device 11 is performed. Execution is canceled, and further, a notification document is printed and discharged from the multifunction device 11, and this notification document is delivered to the sender 22, whereby the FAX transmission by the multifunction device 11 is canceled. The sender 22 is notified of this, but in this respect, the verification server 13 does not pass through the multi-function device 11 as in the data communication system 1D of the fourth embodiment whose configuration is shown in FIG. Fax transmission may be executed directly, and the sender 22 may be notified by e-mail that execution of FAX transmission by the multifunction machine 11 has been cancelled.

However, for this purpose, as in the data communication system 1D of the fourth embodiment in FIG. 5, the verification server 13 is connected to the receiving terminals 32 that each of the multiple senders 22 has. Further, the sender 11 of the sender 22 who is going to perform FAX transmission of the transmission document is input to the multifunction device 11, and the sender ID, FAX number, and OCR data are sent from the multifunction device 11 to the transmission DB 12. And a series of data of the document FAX data are transmitted in association with each other, and further, the sender ID, the FAX number, the OCR data, and the series of the document FAX data are also transmitted from the transmission DB 12 to the collation server 13. Data is associated and transmitted. If it is determined that the transmission document can be faxed (S13: YES in FIG. 2), the document fax data is faxed to the receiving terminal 34 of the receiver 24 designated by the fax number. (S14 in FIG. 2).
On the other hand, if it is determined that FAX transmission of the transmission document is not possible (S13: NO in FIG. 2), a notification document indicating that this FAX transmission has been rejected is created by the verification server 13, and further, the verification server 13 From the mail addresses stored and stored in the mail, and those identified by the sender ID, and based on the mail address, the notification document is received by the sender 22 from the verification server 13 as the notification mail data. 32.

  Further, in the data communication system 1D of the fourth embodiment shown in FIG. 5, document FAX data, which is a document of OCR data used when calculating the transmittable frequency (collation degree), is transmitted to the collation server 13. Therefore, all or part of the document FAX data or OCR data specifying the character string that is the target of the transmittable frequency (collation degree) is transmitted from the collation server 13 to the approval terminal 33, and these data are transmitted to the approval terminal. If the monitor display is performed at 33, the approver 23 becomes a suitable judgment material when determining whether or not the transmission document can be faxed.

In the data communication system 1A of the first embodiment, the data communication system 1B of the second embodiment, the data communication system 1C of the third embodiment, and the data communication system 1D of the fourth embodiment, transmission is performed. The number of possible transmissions used when determining whether or not a document can be faxed is calculated based on the degree of collation with respect to the transmission-prohibited data. You may calculate based on the similarity etc. with respect to prohibition data.
That is, for example, in a case where a plurality of “new product A” as transmission prohibition data is described in a transmission document to be FAX-transmitted, the transmission document is recognized by character recognition of the OCR function of the multifunction machine 11. When all or a part of the “new product A” described in 1 is correctly recognized as “new product A” and one or more “new product A” is included in the OCR data If the number of possible transmissions is calculated based on the number of “new product A” in the OCR data, it is possible to prevent the leakage of important information to the outside with high reliability.
Further, for example, in a case where a plurality of “new product A” as transmission prohibition data is described in a transmission document that is a target of FAX transmission, the transmission document is recognized by character recognition of the OCR function of the multifunction machine 11. Even if the character string “New Product A” described in the above is correctly recognized as “New Product A” and “New Product A” is included in the OCR data, it will be described in the transmission document. OCR calculated by pattern matching even when the character string of “New Product A” is erroneously recognized as “New Product A” and “New Product △” is included in the OCR data If the transmittable frequency is calculated based on the similarity of “new product A” in the data, it is possible to prevent leakage of important information to the outside with a high degree of reliability.

  In the data communication system 1A of the first embodiment, the data communication system 1B of the second embodiment, the data communication system 1C of the third embodiment, and the data communication system 1D of the fourth embodiment, transmission is performed. When determining whether a document can be faxed, the approval terminal 33 determines whether the document can be faxed by transmitting the transmittable frequency as transmittable frequency data from the verification server 13 to the approval terminal 33. It is left to the approver 23 who can confirm the transmittable frequency. In this regard, if it is possible to prevent the harmful effects that may occur due to automatic and formally performed via the transmittable frequency, transmission is possible. Depending on whether or not the frequency exceeds a certain value, the collation server 13 may automatically determine whether the transmission document can be faxed.

  In the data communication system 1A of the first embodiment, the data communication system 1B of the second embodiment, the data communication system 1C of the third embodiment, and the data communication system 1D of the fourth embodiment, Although the transmission DB 12 and the prohibition DB 14 are provided outside the verification server 13, the transmission DB 12 and the prohibition DB 14 may be provided in the verification server 13.

  The data communication system 1A according to the first embodiment, the data communication system 1B according to the second embodiment, the data communication system 1C according to the third embodiment, and the data communication system 1D according to the fourth embodiment are combined. Each connection of the machine 11, the transmission DB 12, the verification server 13, the prohibition DB 14, the registration terminal 31, the transmission terminal 32, and the approval terminal 33 may be made through a local area network or may be made through the Web.

  The present invention can be applied to a technique for restricting FAX transmission based on the content of a transmission document transmitted by FAX.

It is a block diagram of the data communication system by one embodiment of this invention. It is the flowchart figure which showed the function of the collation server in the data communication system by one embodiment of this invention. It is a block diagram of the data communication system by one embodiment of this invention. It is a block diagram of the data communication system by one embodiment of this invention. It is a block diagram of the data communication system by one embodiment of this invention.

Explanation of symbols

1A to 1D Data communication system 11 Multifunction device 12 Transmission DB
13 Verification server 1 Approval terminal

Claims (4)

Reading means having both a FAX function and an OCR function;
A storage means in which transmission prohibition data is registered;
Approval means for determining whether or not to allow FAX transmission are connected to each other,
When the transmission document is FAX-transmitted by the FAX function of the reading unit, text data recognized from the transmission document by the OCR function of the reading unit is transmitted to the approval unit, and the approval unit prohibits the transmission. A data communication system, comprising: determining whether or not the transmission document can be faxed based on a transmission possibility degree obtained by comparing data and the text data. A data communication system according to claim 1,
The data communication system, wherein the approving means calculates the transmittable frequency on the basis of a degree of collation with respect to the transmission prohibited data or a number determined as the transmission prohibited data. A data communication system according to claim 1 or claim 2,
An approval terminal connected to the approval means;
A data communication system according to claim 1, wherein the approval unit sends the transmission frequency to the approval terminal, thereby entrusting the determination at the approval terminal to determine whether the transmission document can be faxed. A data communication system according to any one of claims 1 to 3,
A data communication system, wherein when the approval unit disables FAX transmission of the document, the approval unit transmits FAX data to that effect to the reading unit.

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