JP2001119588A - Facsimile terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a facsimile terminal that inserts dummy data to image data after compression so as to secure the secrecy of the image data efficiently at a low cost. SOLUTION: The facsimile terminal 1 once stores image data read by a scanner 9 to an image memory 5 or a hard disk 10 via an image input output control section 7 at transmission or directly transfers the image data to a communication/channel control section 6 and then faxes the data from the communication/channel control section 6 to receiver side. In this case, the facsimile terminal 1 uses the image input/output control section 7 to compress the image data of an original read by the scanner 9 according to a compression method decided in advance for communication such as the MMR method and then to transfer the compressed data to the image memory 5, the hard disk 10 or the communication/channel control section 6 and inserts prescribed dummy data to a prescribed position of the compressed image data, e.g. at the head position of the image data. Furthermore, a facsimile terminal at a receiver side eliminates the inserted dummy data before the received image data are expanded.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile apparatus, and more particularly, to a facsimile apparatus which inexpensively and efficiently secures image data.

[0002]

2. Description of the Related Art Facsimile machines have come to be used in various fields and at home with the spread thereof.
A conventional facsimile apparatus receives image information in response to an incoming call, regardless of the destination, when there is an incoming call,
Print out on recording paper.

[0003] However, in such a conventional facsimile machine, when an incoming call is received, image information is received regardless of the destination, so that an unnecessary incoming call such as a direct mail can be received. In addition, there is a problem that the received image information is recorded on the recording paper after receiving, and the recording paper is wasted.

Therefore, in order to reject unnecessary reception of direct mail or the like, a facsimile apparatus having a so-called closed area connection function has appeared. This facsimile apparatus has identification information of a destination, such as a telephone number and an ID.
A code or the like is stored in a memory in advance, and the identification information such as the telephone number of the other party transmitted from the other party at the time of the incoming call is compared with the identification information stored in the memory, and reception is permitted only when they match. This avoids erroneous calls and unnecessary incoming calls.

A conventional facsimile apparatus having such a closed area connection function conventionally uses a telephone number or the like as an identification number to identify the other party, and processes whether or not the connection is possible (Japanese Patent Laid-Open No. 05-1993). 268232, JP-A-5-2922
76, JP-A-7-123193, JP-A-9
-261440, etc.).

A facsimile mail apparatus disclosed in Japanese Patent Application Laid-Open No. 9-261440 extracts an image signal and a TSI signal from a received signal, analyzes a predetermined mark from the image signal, and subscribes from a combination of the analyzed marks. The subscriber number is detected, and the subscriber number stored in the subscriber table storing the telephone number of the facsimile terminal device corresponding to the subscriber number for which the service is to be permitted and the subscriber number in advance is added to the detected subscriber number. Corresponding phone number and TSI
By comparing the signal with the signal, an unspecified facsimile terminal device is selected, and transmission of the requested service is controlled.

That is, an identification number is obtained from a mark incorporated in an image signal to identify a destination.

[0008]

However, in such a conventional facsimile apparatus, the ID is provided on the premise that it has a closed area connection function in order to avoid erroneous transmission and unnecessary reception. It is necessary to plan how to register IDs and use IDs.

However, the ID is generally composed of a four-digit code and is a standardized function. Therefore, it is easy to make a coincidence or intentional reception, and the confidentiality of image data (image information) is high. In order to improve security such as the above, there was a need for improvement.

In the conventional closed connection function, the ID plan is important when it is difficult to view the information other than a specific destination in the group, but when there are a plurality of destinations, However, there is a problem that it is difficult to appropriately set the method of using the ID.

Therefore, according to the first aspect of the present invention, when a predetermined facsimile control procedure is executed with a partner facsimile apparatus, image data is compressed by a predetermined compression method, and then, when facsimile transmission is performed, the compressed data is used. By inserting and transmitting dummy data of a predetermined size at the head position of the image data, the image data can be appropriately reproduced by deleting the dummy data on the receiving side and then expanding the image data. If the data is expanded without deleting the dummy data, it will be impossible to reproduce the appropriate image data,
It is an object of the present invention to provide a facsimile apparatus capable of appropriately and inexpensively securing confidentiality of image data.

Another object of the present invention is to provide a facsimile apparatus capable of further improving the confidentiality of image data by appropriately changing the size of dummy data and inserting the dummy data.

According to a third aspect of the present invention, by appropriately changing the insertion position of the dummy data, the insertion position of the dummy data is appropriately set so that the transmission source can be recognized on the receiving side by TSI information or the like. An object of the present invention is to provide a facsimile machine which can further improve the confidentiality of image data and, when a plurality of persons share a facsimile machine, can recognize a transmission source so as to be more usable. And

According to a fourth aspect of the present invention, a predetermined facsimile control procedure is executed with a partner facsimile machine,
After the image is compressed by a predetermined compression method, when transmitting by facsimile, the insertion position is determined based on the terminal specifying information that specifies the facsimile device, and the predetermined insertion size of the compressed image data is determined at the determined insertion position. By inserting dummy data and transmitting facsimile, and transmitting terminal identification information by facsimile control procedure, the confidentiality of image data by inserting dummy data is further improved, and dummy data is appropriately deleted on the receiving side It is an object of the present invention to provide a facsimile apparatus that can reproduce image data and can secure the confidentiality of the image data more appropriately at low cost.

According to a fifth aspect of the present invention, a G3 facsimile control procedure is performed as a facsimile control procedure, and TSI is used as terminal identification information for determining a dummy data insertion position.
By using the information, regardless of the manufacturer of the facsimile machine, the dummy data must be deleted on the receiving side and then expanded to expand the image data so that the image data can be properly reproduced and the dummy data deleted. It is an object of the present invention to provide a facsimile apparatus which makes it impossible to reproduce appropriate image data when the image data is decompressed, and which can secure the confidentiality of the image data more inexpensively.

According to a sixth aspect of the present invention, a G3 facsimile control procedure is performed as a facsimile control procedure, and non-standard NSS information is used as terminal identification information for determining a dummy data insertion position. It is an object of the present invention to provide a facsimile apparatus capable of improving confidentiality.

According to a seventh aspect of the present invention, a G4 facsimile control procedure is performed as a facsimile control procedure, and a calling number or CIL information in a D channel is used as terminal identification information for determining a dummy data insertion position. It is an object of the present invention to provide a facsimile apparatus that can appropriately secure the confidentiality of image data even at the time of facsimile communication and can secure the confidentiality of image data appropriately at low cost.

According to the invention described in claim 8, a predetermined facsimile control procedure is executed between the other facsimile machine and
When receiving image data that has been compressed by a predetermined compression method and has dummy data of a predetermined size inserted at a predetermined position after compression, and decompresses the received image data to record and output the image data, Decompressing and then decompressing and recording and outputting ensure the confidentiality of the image data by inserting the dummy data, and properly delete the dummy data to reproduce the image data, making it more inexpensive and more appropriate. It is an object of the present invention to provide a facsimile apparatus that can secure the confidentiality of image data.

According to a ninth aspect of the present invention, a dummy data insertion position is determined based on terminal specifying information for specifying a transmitting-side facsimile apparatus acquired in a facsimile control procedure, and the dummy data is determined using the inserted position as a deletion position. By deleting the image data, the confidentiality of the image data by inserting the dummy data is further improved, and the dummy data can be more appropriately deleted so that the image data can be reproduced. It is an object of the present invention to provide a facsimile apparatus capable of ensuring confidentiality.

According to a tenth aspect of the present invention, a G3 facsimile control procedure is performed as a facsimile control procedure, and TSI information is used as terminal identification information for determining a position where dummy data to be deleted is inserted. Regardless, a facsimile machine that can appropriately reproduce image data by expanding the image data after deleting the dummy data on the receiving side, and that can secure the confidentiality of the image data inexpensively and appropriately. It is intended to provide.

According to an eleventh aspect of the present invention, the G3 facsimile control procedure is performed as a facsimile control procedure, and non-standard NSS information is used as terminal identification information for determining a position where dummy data to be deleted is inserted. It is an object of the present invention to provide a facsimile apparatus that can improve the confidentiality of data.

According to a twelfth aspect of the present invention, a G4 facsimile control procedure is performed as a facsimile control procedure, and a calling number or CIL information in a D channel is used as terminal identification information for determining a position where dummy data to be deleted is inserted. It is an object of the present invention to provide a facsimile apparatus that can appropriately secure the confidentiality of image data and can secure the confidentiality of image data appropriately at low cost even when performing facsimile communication using G4.

[0023]

According to a first aspect of the present invention, a facsimile apparatus executes a predetermined facsimile control procedure with a partner facsimile apparatus and compresses image data by a predetermined compression method. In a facsimile apparatus that performs facsimile transmission to a partner facsimile apparatus, the above-described object is achieved by inserting dummy data of a predetermined size at a head position of the compressed image data and facsimile transmitting the image data with the inserted dummy data. Have achieved.

According to the above configuration, after performing a predetermined facsimile control procedure with the other party's facsimile apparatus, compressing the image data by the predetermined compression method, and transmitting the facsimile, the head of the compressed image data is Since dummy data of a predetermined size is inserted at the position and transmitted, the image data can be properly reproduced by expanding the image data after deleting the dummy data on the receiving side, and deleting the dummy data. If the image data is decompressed without performing it, appropriate reproduction of the image data can be made impossible, and the confidentiality of the image data can be appropriately secured at low cost.

In this case, for example, as described in claim 2, the facsimile apparatus may insert the dummy data by appropriately changing the size of the dummy data.

According to the above configuration, since the size of the dummy data is appropriately changed and inserted, the confidentiality of the image data can be further improved.

Further, for example, as set forth in claim 3, the facsimile apparatus may appropriately change the insertion position of the dummy data.

According to the above configuration, since the insertion position of the dummy data is appropriately changed, the transmission source can be recognized by the TSI information or the like on the receiving side by appropriately setting the insertion position of the dummy data. In addition, the confidentiality of the image data can be further improved, and when a facsimile apparatus is shared by a plurality of persons, the transmission source can be recognized, so that the usability of the facsimile apparatus can be further improved.

According to a fourth aspect of the present invention, the facsimile apparatus executes a predetermined facsimile control procedure with a partner facsimile apparatus, compresses an image by a predetermined compression method, and transmits the image to the partner facsimile apparatus. In the facsimile device, the insertion position is determined based on the terminal specifying information that specifies the facsimile device, dummy data of a predetermined size is inserted into the determined insertion position of the compressed image data, and the dummy data is The above object is achieved by transmitting the inserted image data by facsimile and transmitting the terminal specifying information by the facsimile control procedure.

According to the above configuration, when a predetermined facsimile control procedure is executed with a partner facsimile apparatus, an image is compressed by a predetermined compression method, and then when facsimile transmission is performed, terminal specifying information for specifying the facsimile apparatus is used. The facsimile transmission is performed by inserting dummy data of a predetermined size into the determined insertion position of the compressed image data and transmitting the facsimile, and the terminal identification information is transmitted by the facsimile control procedure. The confidentiality of the image data by inserting the data can be further improved, and the dummy data can be appropriately deleted on the receiving side so that the image data can be reproduced. Data confidentiality can be ensured.

In this case, for example, as set forth in claim 5, the facsimile apparatus performs a G3 facsimile control procedure as the facsimile control procedure, and uses T.sub.T as terminal identification information for determining the insertion position of the dummy data.
It may use SI information.

According to the above configuration, the G3 facsimile control procedure is performed as the facsimile control procedure, and the TSI information is used as the terminal specifying information for determining the insertion position of the dummy data. Therefore, regardless of the manufacturer of the facsimile apparatus. In addition, the image data can be appropriately reproduced by decompressing the image data after the dummy data is deleted on the receiving side. Therefore, the confidentiality of the image data can be more appropriately and inexpensively secured.

For example, as set forth in claim 6, the facsimile apparatus performs a G3 facsimile control procedure as the facsimile control procedure, and uses non-standard information as terminal identification information for determining the insertion position of the dummy data. It may use NSS information.

According to the above configuration, the G3 facsimile control procedure is performed as the facsimile control procedure, and the non-standard N
Since the SS information is used, the confidentiality of the image data can be further improved.

Further, for example, as set forth in claim 7, the facsimile apparatus performs a G4 facsimile control procedure as the facsimile control procedure, and transmits the D-channel transmission information as terminal identification information for determining the insertion position of the dummy data. A number or CIL information may be used.

According to the above configuration, the G4 facsimile control procedure is performed as the facsimile control procedure, and the calling number or CIL information in the D channel is used as the terminal identification information for determining the insertion position of the dummy data.
Also in the case of facsimile communication using G4, the confidentiality of the image data can be appropriately secured, and the confidentiality of the image data can be appropriately secured at low cost.

The facsimile apparatus of the present invention executes a predetermined facsimile control procedure with a partner facsimile apparatus, receives image data compressed by a predetermined compression method, and receives the received image data. In the facsimile apparatus for recording and outputting after decompressing the received compressed image data, dummy data of a predetermined size is inserted at a predetermined position after the compression, and the dummy data is deleted from the image data. Later elongate,
The above object is achieved by recording and outputting.

According to the above configuration, a predetermined facsimile control procedure is executed with the other party's facsimile apparatus, the data is compressed by a predetermined compression method, and after compression, dummy data of a predetermined size is inserted into a predetermined position. When the received image data is received, the received image data is decompressed and then recorded and output, the dummy data is deleted from the image data and then decompressed and recorded and output, so that the confidentiality of the image data by inserting the dummy data is maintained. The image data can be reproduced by deleting the dummy data appropriately, and the confidentiality of the image data can be more appropriately and inexpensively secured.

In this case, for example, as set forth in claim 9, the facsimile apparatus determines the insertion position of the dummy data based on terminal specifying information for specifying the transmitting-side facsimile apparatus obtained in the facsimile control procedure. The dummy data may be determined and the insertion position is set as a deletion position to delete the dummy data.

According to the above configuration, the insertion position of the dummy data is determined based on the terminal specifying information for specifying the transmitting-side facsimile apparatus acquired in the facsimile control procedure, and the dummy data is deleted using the insertion position as the deletion position. Therefore, the confidentiality of the image data by inserting the dummy data can be further improved, and the dummy data can be more appropriately deleted so that the image data can be reproduced. Therefore, the confidentiality of the image data can be ensured.

For example, as set forth in claim 10, the facsimile apparatus performs a G3 facsimile control procedure as the facsimile control procedure, and uses TSI as terminal identification information for determining the insertion position of the dummy data to be deleted. Information may be used.

According to the above configuration, the G3 facsimile control procedure is performed as the facsimile control procedure, and the terminal identification information for determining the insertion position of the dummy data to be deleted is T
Since the SI information is used, the image data can be properly reproduced by deleting the dummy data on the receiving side and expanding the image data, regardless of the manufacturer of the facsimile machine. The confidentiality of the image data can be ensured.

Further, for example, as set forth in claim 11, the facsimile apparatus performs a G3 facsimile control procedure as the facsimile control procedure, and uses non-terminal identification information for determining an insertion position of the dummy data to be deleted. It may use standard NSS information.

According to the above configuration, the G3 facsimile control procedure is performed as the facsimile control procedure, and the non-standard NSS information is used as the terminal identification information for determining the insertion position of the dummy data to be deleted. Confidentiality can be improved.

Further, for example, as described in claim 12, the facsimile apparatus performs a G4 facsimile control procedure as the facsimile control procedure, and as terminal identification information for determining an insertion position of the dummy data to be deleted,
The calling number or CIL information in the D channel may be used.

According to the above configuration, the G4 facsimile control procedure is performed as the facsimile control procedure, and D is specified as terminal identification information for determining the insertion position of the dummy data to be deleted.
Since the calling number or the CIL information in the channel is used, even in the case of facsimile communication using G4, the confidentiality of the image data can be appropriately secured, and the confidentiality of the image data can be appropriately secured at low cost. Can be.

[0047]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. It should be noted that the embodiments described below are preferred embodiments of the present invention, and therefore, various technically preferable limitations are added. However, the scope of the present invention is not limited to the following description. The embodiments are not limited to these embodiments unless otherwise specified.

FIGS. 1 to 8 show a first embodiment of a facsimile apparatus of the present invention. FIG. 1 shows a facsimile apparatus 1 to which the first embodiment of the facsimile apparatus of the present invention is applied. 3 is a main circuit block diagram of FIG.

In FIG. 1, the facsimile apparatus 1 includes a main control unit 2, an operation control unit 3, a main memory 4, an image memory 5,
The system includes a communication / line control unit 6, an image input / output control unit 7, a plotter 8, a scanner 9, a hard disk (HD) 10, and the like.

The main memory 4 has a ROM (Read Only Memory).
y) and RAM (Random Access Memory)
The ROM 3 stores various programs such as a basic processing program of the facsimile machine 1 and a data protection control processing program which will be described later, and also stores various data and system data necessary for executing these various programs. Have been.

The RAM is used as a work memory of the main control unit 2 and controls various kinds of data necessary for controlling the facsimile apparatus 1, particularly, data protection control processing described later.
For example, dummy data used in the data protection control processing, insertion position data of the dummy data, and the like are stored.
In addition, in the RAM, automatic dial destination information such as a telephone number of a destination input from the operation display unit is registered in correspondence with automatic call dialing such as a one-touch key and abbreviated dial provided on the operation display unit. Is done.

The main control unit 2 mainly includes a CPU (Central Proc).
Based on a program in the ROM of the main memory 4, each unit of the facsimile machine 1 is controlled using the RAM of the main memory 4 as a work memory, and the basic processing as the facsimile machine 1 is executed. At the same time, a data protection control process described later is executed.

An operation display unit (not shown) is connected to the operation control unit 3, and the operation display unit is necessary for operating the facsimile apparatus 1 such as a ten-key, start key, function key, one-touch dial key, and speed dial key. In addition to various operation keys, a display (for example, a liquid crystal display) is provided, and various commands such as a transmission operation are input from the operation keys. Various information to be notified to the operator is displayed. In particular,
From the operation keys of the operation display unit, an insertion position designation operation for designating an insertion position of dummy data is performed in a data protection control process described later.

The image memory 5 is composed of a readable / writable memory such as a large-capacity RAM, and mainly stores image information for transmission and received image information. The image information in the image memory 5 is managed by the main control unit 2 and is read out at a predetermined time to perform transmission processing, recording processing on recording paper by the plotter 8, and the like.

The communication / line control unit 6 has a line L, for example, a PSTN (Public Switched Telephone Network) or an ISDN (Integrated Service).
s Digital Network (service digital network) is connected, and the communication / line control unit 6 automatically receives an incoming call from the line L and performs an automatic call processing to the line L. Further, the communication / line control unit 6 operates under the control of the main control unit 2 to exchange G3 and G4 facsimile control signals with a facsimile apparatus of the other party, and to execute a G3 and G4 facsimile communication procedure. . The communication / line control unit 6 transmits a facsimile control signal transmitted from the destination facsimile apparatus, for example, a TSI signal (transmission terminal identification signal) or a TTI (Transmitter Terminal Ide).
ntification) and other party information (terminal identification information) such as the other party's telephone number, and outputs it to the main control unit 2.

As shown in FIG. 2, the communication / line control section 6 has a built-in data compression section 11 and a modem 12, and the data compression section 12 includes the image memory 5, the hard disk 10, or the image input / output section. 7 is compressed by a compression method determined by communication, for example, MMR (Mo
dified MR: MR (Modufied Relative element addr
ess designate)) and compress (encode) it by the method and output it to the modem 12. The modem 12 operates under the control of the main control unit 2 and modulates a transmission signal such as a protocol signal and image data and demodulates a reception signal input from the line L.

Further, as shown in FIG. 3, the communication / line control unit 6 includes a data check unit 13, and the data check unit 13 compresses the data transmitted from the partner facsimile apparatus via the line L ( It checks whether the encoded image data has been normally received by the compression method determined on the communication, for example, the MMR method, and outputs the determination result to the main control unit 2.

A plotter 8 and a scanner 9 are connected to the image input / output control unit 7 and operate under the control of the main control unit 2 to control the operations of the plotter 8 and the scanner 9.

As the plotter 8, for example, a thermal recording device using a thermal element or an electrophotographic recording device is used, and an image is formed on recording paper based on received image data or image data read by the scanner 9. Record and output.

The scanner 9 is, for example, a CCD (Charge C).
An image scanner or the like using an Oupled Device is generally used, and is generally provided with an ADF (Automatic Document Feeder). The ADF feeds the set plurality of originals one by one to the original reading position of the scanner 9, and the scanner 9
The document conveyed from the ADF is scanned, and the image of the document is read at a predetermined resolution.

The hard disk 10 has a predetermined large capacity and stores registration information necessary for the operation of the facsimile machine 1, image data of a transmission original read by the scanner 9, received image data, and the like.

The image input / output control unit 7 includes a line buffer 14, a data compression unit 15, a data decompression unit 16, a line buffer 17, and the like as shown in FIGS. 4 and 5. As shown in FIG. The image data read by the scanner 9 is compressed by a data compression unit 15 by a predetermined compression method while synchronizing with the line buffer 14 and output to the image memory 5 or the hard disk 10 or the communication / line control unit 6. Further, as shown in FIG. 5, the image input / output control unit 7 expands (decodes) the image data input from the image memory 5 or the hard disk 10 or the communication / line control unit 6 by the data expansion unit 16, Line buffer 17
Output to the plotter 8 while synchronizing. Plotter 8
Prints an image on a recording paper based on image data expanded by the data expansion unit 16 and input via the line buffer 17.

Next, the operation of the present embodiment will be described. The facsimile apparatus 1 inserts predetermined dummy data into image data compressed by a predetermined compression method at the time of transmission, and deletes dummy data inserted into image data compressed by a predetermined compression method at the time of reception. The feature is that appropriate facsimile communication can be performed while image data is reproduced after that to secure communication secret at low cost.

That is, during facsimile communication, the facsimile apparatus 1 transmits data from the transmission side (TX) to the reception side (R) as shown in FIG.
X), and when the receiving side answers, the transmitting side sends a CNG signal to the receiving side, and the receiving side transmits a CED signal (called terminal identification signal), an NSF signal (non-standard function identification signal),
A CSI signal (called terminal identification signal) and a DIS signal (digital identification signal) are transmitted. On the transmitting side, NSS signal (non-standard function setting signal), TSI signal (transmitting terminal identification signal), D
After sequentially transmitting the CS signal (digital command signal) and executing the communication procedure of phase B, the procedure shifts to the procedure of phase C and further performs the TCF signal (training check), and the receiving side normally completes the training check. Then, a CFR signal (reception preparation confirmation signal) is transmitted.

When the transmitting side receives the CFR signal, it determines that the preparation for reception has been completed, starts transmitting PIX (image data), and thereafter performs facsimile communication using a normal G3 facsimile protocol.

When the facsimile machine 1 is on the transmission side, the scanner 9 sequentially reads the image of the original and temporarily stores it in the image memory 5 or the hard disk 10 via the image input / output control unit 7, or communication/
The image data is directly transferred to the line controller 6, and the communication / line controller 6 facsimile-transmits the image data to the receiving side.

At this time, the facsimile machine 1 on the transmitting side
4, the image input / output control unit 7 synchronizes the image data of the original read by the scanner 9 with the data compression unit 15 in the line buffer 14 as shown in FIG. The image memory 5 or the hard disk 10 is compressed after being compressed by a compression method determined on the communication (an optimal compression method taking into account the readability of reproduced data by inserting dummy data, which is an object of the present invention, for example, an MMR method). Alternatively, the image data is transferred to the communication / line control unit 6, and when the image data compressed by the data compression unit 15 is transferred,
At a position indicated by A in FIG. 4, a predetermined position of the image data, for example,
Predetermined dummy data is inserted at the head position of the image data. For example, if the data string of the image data is “P0, P1,
P2, P3, P4, P5, P6..., And the data string of the dummy data is “D0, D1, D2, D3”. When inserting the dummy data at the beginning of the image data, The data input to the data compression unit 15 is
"D0, D1, D2, D3, P0, P1, P2, P3,
P4, P5, P6 ... ".

The image input / output control unit 7 includes a data compression unit 15
, And transfers the image data with the dummy data inserted to the image memory 5 or the hard disk 10 or the communication / line control unit 6.

The facsimile apparatus 1 transfers the compressed image data read from the image memory 5 or the hard disk 10 and inserted with the dummy data to the communication / line control unit 6 at a predetermined time, or The image data that has been directly compressed and into which the dummy data has been inserted is transferred to the communication / line control unit 6, modulated by the modem 12 of the communication / line control unit 6, and then transmitted to the receiving side.

The receiving side is the facsimile machine 1
When the facsimile apparatus 1 on the receiving side has the data protection control processing function of the present embodiment and has the same configuration as that of (Decryption).

Now, assuming that the facsimile apparatus 1 is also installed on the receiving side, the facsimile apparatus 1 on the receiving side receives image data from the line L by the communication / line control unit 6 as shown in FIG. As described above, after the received image data is demodulated by the modem 12 of the communication / line control unit 6, the data check unit 13 checks whether the received image data is normally received by the compression method determined on the communication, and performs the main control. Part 2
Outputs the received image data to the image memory 5 or the hard disk 10 or the image input / output control unit 7 when the data check unit 13 determines that the received image data is normally received, and the data is not normally received. When the determination is made, the communication is terminated.

When the facsimile machine 1 on the receiving side receives the image data normally, it temporarily stores the received image data in the image memory 5 or the hard disk 10 as described above, and then controls the image input / output at a predetermined time. To the image input / output control unit 7 or directly from the communication / line control unit 6 to the image input / output control unit 7.

As shown in FIG. 5, the image input / output control section 7 first decompresses the received image data by the data decompression section 16 in accordance with the compression method of the image data.
The data is transferred to the plotter 8 while synchronizing with the plotter 8 at 7, and the plotter 8 records and outputs it on recording paper. At this time, under the control of the main control unit 2, the image input / output control unit 7
In other words, the dummy data is deleted from the image data input to the data decompression unit 16 at the position indicated by, that is, before being decompressed by the data decompression unit 16. Facsimile machine 1 on the receiving side
In order to delete dummy data, it is necessary to know the size (length) of the dummy data and the position in the image data where the dummy data is inserted. Can be notified by a facsimile control procedure between the transmission side and the reception side, or by setting in advance on the transmission side and the reception side.

Therefore, if the received data is expanded without deleting the dummy data on the receiving side, the image data cannot be properly reproduced. In particular, in the case of the MMR compression method, the dummy data is inserted. As a result, the expanded image is greatly disturbed, and the expanded image cannot be properly recognized on the receiving side. As a result, even when the image data is erroneously transmitted to the transmission destination, it is possible to prevent the reception side from seeing the image.

When the received data is decompressed after deleting the dummy data on the receiving side, the image data can be properly reproduced, and the appropriate facsimile image can be transmitted and received.

In the above embodiment, on the transmitting side, after the data is compressed by the data compression section 15 of the image input / output control section 7, dummy data is inserted by the image input / output control section 7. The insertion of data is not limited to the insertion position described above. For example, dummy data may be inserted at the position indicated by a in FIG. 2, that is, before the communication / line control unit 6 inputs the data to the modem 12. This way,
When the compression method compressed by the data compression unit 15 of the image input / output control unit 7 differs from the compression method set in advance on the communication, the data compression unit 11 of the communication / line control unit 6 re-compresses image data. After deleting the inserted dummy data, compressing the image data without performing the procedure of compressing the image data and inserting the dummy data again,
Dummy data can be inserted.

In the above embodiment, on the receiving side, the image input / output control unit 7 deletes the dummy data before the image data is expanded by the data expansion unit 16 of the image input / output control unit 7. However, the deletion position of the dummy data is not limited to this. For example, the position indicated by b in FIG. 3, that is, the image data modulated by the modem 12 of the communication / line control unit 6 is transferred to the data check unit 13. At this time, dummy data may be deleted from the compressed image data. By doing so, the data check in the data check unit 13 can be performed more appropriately.

Further, the size and insertion position of the dummy data may be set in advance, or the size of any dummy data determined based on an instruction input and operated on the operation display unit of the facsimile machine 1 on the transmission side. And any insertion position. However, when it is based on an instruction of an input operation in the facsimile apparatus on the transmitting side, it is necessary to notify the receiving side of the size and insertion position of the dummy data determined in the facsimile control procedure.

Then, the insertion position of the dummy data is set to TS
After the I or TTI header information, for example, 300
If it is set after the line, even if image data is recorded and output without deleting the dummy data, the TSI and T
For example, as shown in FIG. 7, the header information of the TI can be appropriately recorded and output. Further, assuming that the insertion position of the dummy data is the 15th or 30th line, as shown in FIG.
Only the source can be recorded and output on the recording paper in an appropriate state.

Therefore, in the conventional closed area connection, even when a plurality of persons share one facsimile apparatus 1 and an appropriate closed area connection cannot be performed, the facsimile apparatus 1 of the present embodiment can be used. The header information can be appropriately recorded and output, and the transmission source operator and transmission destination operator of the image data can be appropriately specified. As a result, it is possible to improve the usability of the facsimile apparatus 1 by appropriately performing recognition after erroneous transmission and recovering the facsimile transmission work while protecting image information.

FIG. 9 and FIG. 10 are views showing a second embodiment of the facsimile apparatus of the present invention.

This embodiment is applied to a facsimile apparatus similar to the facsimile apparatus of the first embodiment, and in the description of this embodiment, the first embodiment will be described.
The description will be made using the reference numerals used in the description of the embodiment as they are.

The facsimile apparatus 1 of the present embodiment
The position of inserting the dummy data into the compressed transmission image data and the position of deleting the dummy data from the reception image data are determined based on the terminal identification information (terminal identification information) of the three facsimile control procedure.

The facsimile apparatus 1 can use, for example, the TSI signal shown in the G3 facsimile protocol sequence diagram in FIG. 6 as the terminal identification information (terminal identification information) used to determine the insertion position of the dummy data. .

The method for determining the insertion position and the deletion position of the dummy data in the compressed image data using the TSI signal is set in advance in the facsimile machine 1 on the transmitting side and the facsimile machine 1 on the receiving side. The control unit 2 inserts dummy data into the insertion position determined by software, or inserts the dummy data into the insertion position determined by the image input / output control unit 7 or the communication / line control unit 6 from hardware.

[0086] When the dummy data is inserted for each predetermined bit of the compressed image data by using the TSI signal, the insertion position and the deletion position can be determined, for example, by the simplest method. The information is "123
4 ", add each digit in decimal (1 + 2 +
3 + 4 = 10), and the addition result “10” is used as a bit unit when dummy data is inserted for each bit into the compressed image data. For example, the bits of the compressed image data before the dummy data insertion are “P00 to P0f, P10 to P1f, P20” as shown in FIG.
... P2f... ", Dummy data DMY is inserted into the image data every" 10 "bits as shown in FIG. The insertion of the dummy data is performed by the main control unit 2 by software processing at the time A shown in FIG. 4 or at the time shown by a in FIG. 2 as in the first embodiment, or The image input / output control unit 7 or the communication / line control unit 6 performs the processing by hardware processing.

On the other hand, the facsimile machine 1 on the receiving side calculates the position where the dummy data is inserted from the terminal identification information (terminal specifying information) notified by the TSI signal from the facsimile machine 1 on the transmitting side in the same manner as described above. Then, the dummy data is deleted using the calculated insertion position of the dummy data as the deletion position. The deletion of the dummy data is performed by the main control unit 2 by software processing at the time indicated by B in FIG. 5 or at the time indicated by b in FIG. 3, as in the first embodiment. The image input / output control unit 7 or the communication / line control unit 6 performs the processing by hardware processing.

As described above, in the present embodiment, the G3 facsimile control procedure is performed as the facsimile control procedure.
TSI information is used as terminal identification information for determining the insertion position of the dummy data.

Therefore, regardless of the manufacturer of the facsimile machine 1, the image data can be appropriately reproduced by expanding the image data after deleting the dummy data on the receiving side, and the dummy data is deleted. If the image data is decompressed without proper reproduction of appropriate image data, it is possible to ensure the confidentiality of the image data more inexpensively and more appropriately.

In this embodiment, the insertion position and the deletion position of the dummy data are determined based on the TSI signal. However, the present invention is not limited to the TSI signal. For example, NSS which is a non-standard facsimile protocol is used. The same may be determined based on a signal (non-standard function setting signal).

In this way, the confidentiality of the image data can be further improved.

FIG. 11 is a diagram showing a third embodiment of the facsimile apparatus of the present invention.

This embodiment is applied to a facsimile apparatus similar to the facsimile apparatus of the first embodiment, and in the description of the present embodiment, the first embodiment will be described.
The description will be made using the reference numerals used in the description of the embodiment as they are.

The facsimile apparatus 1 according to the present embodiment
It is connected to the SDN network, and determines the position of inserting dummy data into the compressed transmission image data and the position of deleting the dummy data from the reception image data based on the terminal identification information (terminal identification information) of the G4 facsimile control procedure. I do.

That is, in the G4 facsimile control procedure, as shown in FIG.
A TUP (call setup request) is sent to the ISDN network, and the ISDN network returns a CALL PROC (call setup acceptance) to the transmission side and sends a SETUP request to the reception side. Upon receiving the call setup message SETUP, the ISDN network further sends a call setup acceptance message CALL PROC to the calling terminal.
Is sent.

Next, when the receiving side detects the arrival of the call setup message SETUP from the ISDN network, it checks the contents of the higher layer compatibility (HLC) set in the information element of the call setup message SETUP, When it is determined that communication is possible, a ringing tone is usually started to call the operator of the terminal itself. However, in this embodiment, since the facsimile apparatus 1 is used, the call connection procedure is immediately started, and the ISDN network is started. Call message AL
Send ERT. The ISDN sends the received call message ALERT to the calling terminal to notify that the call has started. Here, the call message ALERT is repeatedly transmitted at an appropriate period.

Next, the receiving side sends a call message CONN to the ISDN network, and the ISDN network sends a response message CONN to the transmitting side to notify that the receiving side has accepted the call. Further, the ISDN network sends a response confirmation message CONN ACK to the receiving side, confirms the response of the receiving side, and connects the line between the transmitting side and the receiving side. The above is the processing in the D channel.

Next, the processing shifts to the processing of the B channel, and the SA
A BM (Set Asynchronous Balanced Mode) command is transmitted from the transmission side to the reception side, and an operation request for the synchronous balanced mode is made. The reception side transmits a UA (Disconnected Mode) to notify the acceptance of the mode setting command. Upon receiving the UA, the transmitting side sends SQ (restart request), and upon receiving SF (restart confirmation) from the receiving side, sends out CR (CN) (call request: incoming request).
When CA (CC) (incoming call acceptance) is received from the receiving side, T
Send CR (connection request). The transmitting side sends a CSS (session start instruction) when a TCA (connection acceptance) is sent from the receiving side in response to the TCR, and sends an RSSP (session start confirmation) from the receiving side. , CDCL (Document Function List)
Thereafter, facsimile communication is performed according to the normal G4 facsimile control procedure.

Then, the facsimile machine 1 on the transmitting side
The terminal identification information (terminal identification information) can be performed by the calling number of SETUP, or the sender T
It is inserted into the CSS, which is CIL (Call Identification Line) information used as ID (Terminal Identification), and notified to the receiving side. The facsimile machine 1 on the transmission side determines the insertion position of the dummy data based on the terminal identification information, inserts the dummy data into the determined insertion position of the compressed image data, and transmits the data to the reception side. . The insertion of the dummy data is performed at the time point A shown in FIG. 4 or in the same manner as in the first embodiment.
At the point indicated by a in FIG. 2, the main control unit 2 performs the software processing, or the image input / output control unit 7 or the communication / line control unit 6 performs the hardware processing.

On the other hand, the facsimile machine 1 on the receiving side transmits the SETUP calling number or the CS of the CIL information from the transmitting side.
The dummy data insertion position is determined based on the terminal identification information notified in S, and the dummy data is deleted from the received image data using the dummy data insertion position as the dummy data deletion position. To stretch. This deletion of the dummy data is performed at the time indicated by B in FIG. 5 or by b in FIG. 3, as in the first embodiment.
At this point, the main control unit 2 performs the software processing, or the image input / output control unit 7 or the communication / line control unit 6 performs the hardware processing.

As described above, the facsimile apparatus 1 according to the present embodiment performs the G4 facsimile control procedure as the facsimile control procedure, and generates the terminal identification information (terminal identification information) for determining the insertion position of the dummy data in the D channel. Number or CIL information is used.

Therefore, even in the case of facsimile communication using G4, the confidentiality of the image data can be properly secured, and the confidentiality of the image data can be appropriately secured at low cost.

Although the invention made by the inventor has been specifically described based on the preferred embodiments, the invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the invention. It goes without saying that it is possible.

[0104]

According to the facsimile apparatus of the first aspect of the present invention, a predetermined facsimile control procedure is executed with the other party's facsimile apparatus, image data is compressed by a predetermined compression method, and then transmitted by facsimile. At the time of transmission, dummy data of a predetermined size is inserted and transmitted at the head position of the compressed image data, so that the dummy data is deleted on the receiving side and then the image data is expanded to reproduce the image data properly In addition, if the image data is expanded without deleting the dummy data, appropriate reproduction of the image data can be made impossible, and the confidentiality of the image data can be appropriately secured at low cost.

According to the facsimile apparatus of the present invention, since the size of the dummy data is appropriately changed and inserted, the secrecy of the image data can be further improved.

According to the facsimile apparatus of the third aspect of the present invention, since the insertion position of the dummy data is appropriately changed,
By appropriately setting the insertion position of the dummy data, the TSI
The source can be recognized on the receiving side by information and the like, so that the confidentiality of the image data can be further improved, and the source can be recognized when multiple people share the facsimile machine. Thus, the usability of the facsimile apparatus can be further improved.

According to the facsimile apparatus of the present invention, a predetermined facsimile control procedure is executed between the facsimile apparatus and a partner facsimile apparatus to compress an image by a predetermined compression method and then transmit the facsimile by facsimile. The insertion position is determined based on the terminal identification information that specifies the device, the dummy data of a predetermined size is inserted into the determined insertion position of the compressed image data, facsimile transmission is performed, and the terminal identification information is facsimile controlled. Since the transmission is performed according to the procedure, the secrecy of the image data by inserting the dummy data can be further improved, and the dummy data can be appropriately deleted on the receiving side so that the image data can be reproduced. The confidentiality of the image data can be ensured more appropriately.

According to the facsimile apparatus of the present invention, the G3 facsimile control procedure is performed as the facsimile control procedure, and the TSI information is used as the terminal specifying information for determining the insertion position of the dummy data. Regardless of the manufacturer, it is possible to properly reproduce the image data by deleting the dummy data on the receiving side and then expand the image data, and it is also appropriate to decompress the dummy data without deleting it Thus, it is possible to make it impossible to reproduce the image data, and it is possible to secure the confidentiality of the image data more inexpensively and more appropriately.

According to the facsimile apparatus of the present invention, the non-standard NSS information is used as the terminal specifying information for performing the G3 facsimile control procedure as the facsimile control procedure and determining the insertion position of the dummy data. Thus, the confidentiality of the image data can be further improved.

According to the facsimile apparatus of the present invention, a G4 facsimile control procedure is performed as a facsimile control procedure, and a calling number or CIL information in a D channel is used as terminal identification information for determining a dummy data insertion position. Therefore, even in the case of facsimile communication using G4, the confidentiality of the image data can be appropriately secured, and the confidentiality of the image data can be appropriately secured at low cost.

According to the facsimile apparatus of the present invention, a predetermined facsimile control procedure is executed between the facsimile apparatus and the other facsimile apparatus, the dummy data is compressed by a predetermined compression method, and a dummy having a predetermined size after the compression. When receiving image data in which data is inserted at a predetermined position and recording and outputting the received image data after decompressing, the dummy data is deleted from the image data and then decompressed and recorded and output. , Image data can be reproduced by appropriately deleting dummy data, and the confidentiality of image data can be more appropriately and inexpensively secured.

According to the facsimile apparatus of the ninth aspect, the insertion position of the dummy data is determined based on the terminal specifying information for specifying the transmitting-side facsimile apparatus obtained in the facsimile control procedure, and the insertion position is deleted. Since the dummy data is deleted as the position, the secrecy of the image data by inserting the dummy data can be further improved, and the image data can be reproduced by deleting the dummy data more appropriately. Thus, the confidentiality of the image data can be ensured more inexpensively and more appropriately.

According to the facsimile apparatus of the present invention, the G3 facsimile control procedure is performed as the facsimile control procedure, and the TSI information is used as the terminal identification information for determining the insertion position of the dummy data to be deleted. Regardless of the manufacturer of the facsimile machine, the image data can be properly reproduced by deleting the dummy data on the receiving side and then expanding the image data, thereby ensuring the confidentiality of the image data at low cost and appropriately. be able to.

According to the facsimile apparatus of the present invention, the G3 facsimile control procedure is performed as the facsimile control procedure, and the non-standard NSS information is used as the terminal identification information for determining the insertion position of the dummy data to be deleted. Therefore, the confidentiality of the image data can be further improved.

According to the facsimile apparatus of the twelfth aspect, the G4 facsimile control procedure is performed as a facsimile control procedure, and the calling number or CIL information in the D channel is used as terminal identification information for determining the insertion position of dummy data to be deleted. Therefore, even when performing facsimile communication with G4, the confidentiality of the image data can be appropriately secured, and the confidentiality of the image data can be appropriately secured at low cost.

[Brief description of the drawings]

FIG. 1 is a main part circuit block diagram of a facsimile apparatus to which a first embodiment of a facsimile apparatus of the present invention is applied.

FIG. 2 is a circuit block diagram of the communication / line control unit of the facsimile apparatus of FIG. 1 at the time of data transmission.

FIG. 3 is a circuit block diagram of the communication / line control unit of the facsimile apparatus of FIG. 1 when receiving data.

FIG. 4 is a circuit block diagram of the image input / output control unit of the facsimile apparatus of FIG. 1 when reading an image.

FIG. 5 is a circuit block diagram of the image input / output control unit of the facsimile apparatus of FIG. 1 when recording an image.

FIG. 6 is a protocol sequence diagram at the time of G3 communication by the facsimile apparatus of FIG. 1;

7 is a diagram showing an example of a recording state when dummy data is inserted after 300 lines of image data in the facsimile apparatus of FIG. 1 and recording and outputting without deleting the dummy data on the receiving side.

8 is a diagram showing an example of a recording state when dummy data is inserted into the 15th or 30th line of image data in the facsimile apparatus shown in FIG. 1 and recorded and output without deleting the dummy data on the receiving side.

FIG. 9 is a diagram showing an example of a bit configuration of compressed image data before dummy data is inserted in a facsimile apparatus to which a second embodiment of the facsimile apparatus of the present invention is applied.

10 is a diagram illustrating an example of a bit configuration of image data when dummy data is inserted into the image data of FIG. 9 every 10 bits.

FIG. 11 is a protocol sequence diagram at the time of G4 communication by the facsimile apparatus to which the third embodiment of the facsimile apparatus of the present invention is applied.

[Description of Signs] 1 facsimile machine 2 main control unit 3 operation control unit 4 main memory 5 image memory 6 communication / line control unit 7 image input / output control unit 8 plotter 9 scanner 10 hard disk 11 bus

Claims (12)

[Claims] 1. A facsimile apparatus which executes a predetermined facsimile control procedure with a partner facsimile apparatus, compresses image data by a predetermined compression method, and transmits the image data to the partner facsimile apparatus by facsimile. A facsimile apparatus characterized in that dummy data of a predetermined size is inserted at a head position of image data, and the image data with the inserted dummy data is transmitted by facsimile. 2. The facsimile apparatus according to claim 1, wherein said facsimile apparatus inserts said dummy data by appropriately changing its size. 3. The facsimile apparatus according to claim 1, wherein the insertion position of the dummy data is appropriately changed.
Or a facsimile apparatus according to claim 2. 4. A facsimile apparatus for executing a predetermined facsimile control procedure with a partner facsimile apparatus, compressing an image by a predetermined compression method, and transmitting the facsimile to the partner facsimile apparatus. Determine the insertion position based on the terminal identification information to be inserted, insert dummy data of a predetermined size at the determined insertion position of the compressed image data, facsimile transmit the image data with the dummy data inserted A facsimile apparatus for transmitting the terminal identification information in the facsimile control procedure. 5. The facsimile apparatus according to claim 4, wherein the facsimile apparatus performs a G3 facsimile control procedure as the facsimile control procedure, and uses TSI information as terminal identification information for determining the insertion position of the dummy data. Facsimile machine. 6. The facsimile apparatus according to claim 3, wherein a G3 facsimile control procedure is performed as the facsimile control procedure, and non-standard NSS information is used as terminal identification information for determining the insertion position of the dummy data. A facsimile apparatus according to claim 4. 7. The facsimile apparatus performs a G4 facsimile control procedure as the facsimile control procedure, and as terminal identification information for determining an insertion position of the dummy data,
5. The facsimile apparatus according to claim 4, wherein a calling number or CIL information in the D channel is used. 8. A facsimile apparatus that executes a predetermined facsimile control procedure with a partner facsimile apparatus, receives image data compressed by a predetermined compression method, decompresses the received image data, and records and outputs the decompressed image data. In the received compressed image data, dummy data of a predetermined size is inserted at a predetermined position after the compression,
A facsimile apparatus wherein the dummy data is deleted from the image data, decompressed, and recorded and output. 9. The facsimile apparatus determines an insertion position of the dummy data based on terminal identification information for identifying a facsimile device on the transmission side obtained in the facsimile control procedure, and sets the insertion position as a deletion position to the dummy data. The facsimile apparatus according to claim 7, wherein the data is deleted. 10. The facsimile apparatus performs a G3 facsimile control procedure as the facsimile control procedure.
9. The facsimile apparatus according to claim 8, wherein TSI information is used as terminal identification information for determining an insertion position of the dummy data to be deleted. 11. The facsimile apparatus performs a G3 facsimile control procedure as the facsimile control procedure.
9. The facsimile apparatus according to claim 8, wherein non-standard NSS information is used as terminal identification information for determining an insertion position of the dummy data to be deleted. 12. The facsimile apparatus performs a G4 facsimile control procedure as the facsimile control procedure, and uses a calling number or CIL information in a D channel as terminal identification information for determining the insertion position of the dummy data to be deleted. The facsimile apparatus according to claim 8, wherein