JPH1032720A - Facsimile equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide facsimile(FAX) equipment with which the images of a joint binary image group(JBIG) are transmitted at high speed while omitting a protocol between pages. SOLUTION: At the time of transmission, the FAX equipment encodes transmission image data through the JBIG system and when these image data are encoded for one page, the presence/absence of the next page is checked. When there is the next page, the presence/absence of a mode change is checked. When there is no mode change, a multipage signal(MPS) is set to the comment marker of the binary image data(BID) of a JBIG image and image data are transmitted just for one page. When there is the mode change, an end-of-message(EOM) signal to which the mode information of line density or encoding system as the contents of the mode change is added behind is set to the comment marker and the image data are transmitted just for one page. When there is no next page any more, the operation of a scanner is stopped/a SAF memory is closed and FAX transmission is finished by an ordinary FAX communication procedure (steps S12-S20).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a facsimile apparatus, and more particularly, to a facsimile apparatus for transmitting a JBIG image at a high speed without a protocol between pages.

[0002]

2. Description of the Related Art Conventionally, in a facsimile apparatus, at the time of transmission, image data of a document read by a scanner is encoded and decoded by an encoding / decoding unit using an MH (Modified Huffman) encoding method and an MR (Modulated Relative element address de).
signate) coding method or MMR (Modified M
R) The data is compressed and coded by a standard coding method for binary facsimile such as a coding method, and then temporarily stored in an image memory, output to a line, and transmitted to a partner facsimile apparatus. Further, at the time of reception, the facsimile apparatus receives coded image data sent via a line, temporarily stores the coded image data in an image memory, and then performs coding / coding.
The image data is decoded into the original image data by the decoding unit, and is recorded and output on the recording paper by the plotter.

In such a facsimile machine,
Conventionally, only binary image data, that is, black-and-white binary image data, has been handled. Recently, however, with the development of a recording method, one pixel can be recorded with a plurality of gradations. Also in the data transmission method, it is necessary to transmit multi-tone image data.

However, a multi-tone image has an extremely large amount of data as compared with a case where a binary image is handled, and if data is encoded and transmitted using a conventional encoding method,
Communication time is reduced, and communication costs are increased. For example, when comparing the data amount of a black-and-white binary image and the data amount of a black-and-white 256-tone image, the number of bits required for one pixel is 1 bit for a binary image, and 8 bits for a 256-tone image. Therefore, as a whole, the 256 gradation image has a data amount eight times as large as the binary image. The fact that the amount of data is large means that the amount of data to be processed is correspondingly large and the processing time is increased, and communication devices such as facsimile apparatuses have a serious problem that the communication time is increased.

As one method of reducing the transmission time, there is a method of efficiently encoding a multi-tone image so as to reduce the amount of data to be transmitted, and a multi-tone image (including a color image). For example, there is a JBIG (Joint Binary Image Group) system standardized by ITU-T (formerly CCITT) and ISO (International Organization for Standardization), and the JBIG system is basically , The image is decomposed into binary bit planes and Q
The encoding is performed using a binary arithmetic encoding method called M-coder.

As a device for encoding and transmitting image data by the encoding method using the JBIG system, there is, for example, an image transmitting device described in Japanese Patent Application Laid-Open No. Hei 7-297978. The read image data is encoded by a JBIG encoding unit and temporarily stored in a code buffer. The arithmetic control unit calculates a threshold of the amount of data in the code buffer required at the start of communication from the transmission speed, and when the threshold amount of code data is accumulated in the code buffer, the data is transmitted by the transmission unit.

Therefore, in the conventional image transmitting apparatus, when transmitting multi-page (multiple-page) image data in the facsimile G3 mode, the multi-page
Each time a page is transmitted, the transmission of image data is temporarily terminated, the protocol is redone, and then the image data is transmitted.

[0008]

However, in such a conventional facsimile apparatus, when multi-page coded data encoded by the JBIG system is transmitted in a multi-page mode in the facsimile G3 mode, one page is transmitted. Every time the transmission of the image data is terminated, the protocol is redone, and then the image data is transmitted again. Therefore, the protocol must be redone for each page. 300bp
Since communication is performed using a slow modem called s, there is a problem that the communication time is rather long.

Therefore, the first aspect of the present invention provides a JBIG
When there is no change in the communication mode during communication during transmission of the image data encoded by the G3 facsimile communication procedure during communication, a multi-page signal is added to the comment marker of the JBIG encoding method and transmitted, so that the data is transmitted between pages. It is an object of the present invention to provide a facsimile apparatus that can continuously transmit image data without exchanging protocols and transmit high-quality image data at high speed.

According to a second aspect of the present invention, when image data encoded by the JBIG system is transmitted by the G3 facsimile communication procedure and a communication mode is changed during communication, a message end signal is added to a comment marker of the JBIG encoding system. When the mode is changed between pages, the image data is transmitted continuously without exchanging the protocol between the pages. It is an object of the present invention to provide a facsimile apparatus capable of transmitting data at high speed.

According to a third aspect of the present invention, when image data encoded by the JBIG method is transmitted by the G3 facsimile communication procedure, a non-standard function identification signal transmitted first from the receiving side is stored, and communication is performed during communication. When there is a mode change, a message end signal is added to the comment marker of the JBIG encoding system and transmitted, and based on the standard function identification signal, a range of functions that may be changed on the receiving side is set. By changing the mode of
Even when the mode is changed between pages, the image data is transmitted continuously without transmitting and receiving the protocol between the pages, and the transmission is performed in an appropriate mode, so that even higher quality image data can be transmitted. It is an object of the present invention to provide a facsimile apparatus capable of transmitting at high speed.

[0012]

According to a first aspect of the present invention, there is provided a facsimile apparatus for compressing an image of a transmission original into a JBIG image and performing facsimile transmission according to a predetermined G3 facsimile communication procedure. If there is no mode change during transmission during multi-page transmission of the image data of the transmitted original document, the multi-page signal is inserted into the comment marker of the binary image data of the compressed JBIG image and transmitted, thereby achieving the above object. Have achieved.

According to the above configuration, when image data encoded by the JBIG method is transmitted by the G3 facsimile communication procedure, if there is no change in the communication mode during communication, the J
Since the multi-page signal is added to the comment marker of the BIG encoding method and transmitted, image data can be transmitted continuously without exchanging protocols between pages, and high-quality image data can be transmitted at high speed. Can be sent.

According to a second aspect of the present invention, there is provided a facsimile apparatus which compresses an image of a transmission original into a JBIG image to generate a predetermined G
A facsimile apparatus for performing facsimile transmission according to a three-facsimile communication procedure, wherein, when multi-page transmission of image data of a plurality of pages of a transmission original is performed, if there is a mode change during transmission, the compressed JBIG image 2 The object is achieved by inserting a message end signal and mode information indicating the content of the changed mode into the comment marker of the value image data and transmitting the message.

According to the above configuration, when image data encoded by the JBIG system is transmitted by the G3 facsimile communication procedure, if there is a change in the communication mode during the communication, the J
Since the message end signal and the changed mode information are added to the comment marker of the BIG encoding method and transmitted, even if the mode is changed between pages, the image data can be transferred without performing protocol exchange between pages. Continuous transmission is possible, and high-quality image data can be transmitted at high speed.

In this case, for example, as described in claim 3, in the facsimile transmission, a called terminal identification signal transmitted first from a destination is stored, and when the mode is changed, the called terminal is identified. The changed mode setting may be performed within the range of the function of the other party specified by the identification signal.

According to the above configuration, when image data encoded by the JBIG method is transmitted by the G3 facsimile communication procedure, the non-standard function identification signal transmitted first from the receiving side is stored, and the communication mode is set during communication. When there is a change, a message end signal is added to the comment marker of the JBIG encoding method and transmitted, and based on the standard function identification signal, a mode within a range of functions that the receiving side may change is set. Since changes are made, even if there is a mode change between pages, image data can be transmitted continuously without transmitting and receiving protocols between pages, and transmission can be performed in an appropriate mode. Thus, image data of even higher quality can be transmitted at high speed.

[0018]

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 5 are views showing a facsimile apparatus to which an embodiment of the facsimile apparatus according to the present invention is applied.

FIG. 1 is a circuit block diagram of a facsimile apparatus 1 according to the present invention.
(Central Processing Unit) 2, ROM (Read Only)
Memory) 3, RAM (Random Access Memory) 4, modem 5, network control unit 6, scanner 7, encoding / decoding unit 8,
An image memory 9, a plotter 10, an operation display unit 11, and the like are provided, and the above units are connected by a bus 12.

The ROM 3 stores various control programs such as a basic control processing program as the facsimile machine 1 and a JBIG communication control processing program to be described later, and system data and data necessary for executing these control programs. Various data are stored.

The RAM 4 is used as a work memory of the CPU 2 and has a line buffer for temporarily storing image data, and temporarily stores various data and encoded image data.

The CPU 2 controls each unit of the facsimile machine 1 while using the RAM 4 as a work memory based on a program in the ROM 3 to execute processing as the facsimile machine 1 and to execute JBIG communication control processing and the like to be described later. Execute various processes.

The modem 5 modulates the transmission signal of the G3 communication into a form suitable for transmission on the line, and demodulates the modulation signal sent from the line.

The network control unit 6 is connected to, for example, a line L, for example, a general public line.
In accordance with the three communication protocols, image data transmission and reception and control signal transmission / reception are performed, and automatic call origination / reception processing is performed.

The scanner 7 is, for example, a CCD (Charge C).
An image scanner using an Oupled Device is used. The scanner 7 operates under the control of the CPU 2, scans a document, reads an image of the document at a predetermined resolution, and outputs the read image data of the document to the line buffer of the RAM 4.

The encoding / decoding unit 8 has an encoding / decoding function of an ordinary binary facsimile standard encoding system such as MH system, MR system and MMR system, and a JBIG encoding system. Transmission image data, image memory 9
Encoding and decoding of the stored image data and the received image data.

The image memory 9 is composed of a hard disk or a RAM, and mainly stores transmission image data and reception image data encoded by the encoding / decoding section 8 in file units.

As the plotter 10, for example, a thermal recording device using a thermal element or an electrophotographic recording device is used. The plotter 10 prints an image of received image data or an image read by the scanner 7 on recording paper. In addition to recording and outputting, various kinds of information notified from the facsimile machine 1 to the operator, for example, predetermined reports (management report, transmission result report, reception result report, etc.) are recorded and output on recording paper.

The operation display unit 11 includes various operation keys such as a numeric keypad, a start key, a stop key, and a function key. The operation display unit 11 includes a display. Various commands such as a transmission operation are input from the operation keys. In addition, the command content input from the operation keys and various information to be notified to the operator from the facsimile machine 1 are displayed and output.

The JBIG system is an MH coding system,
Image data can be compressed at a higher compression ratio than standard binary facsimile standard encoding methods such as R encoding method and MMR encoding method, and image data with a large amount of information such as halftone images can be efficiently processed. And high-speed communication is possible. The JBIG compressed image has a configuration as shown in FIG. 2, and the entire image is a binary image (BIE: Bi-lev).
el image entity). Binary image body (BI
E) is a binary image header (BIH).
der) and binary image data (BID: Bi-level image dat)
a) as its constituent elements, and the binary image header (BI
H) is fixed at 20 bytes, and describes parameters that define the image data. As shown in FIG. 2, the binary image data (BID) is (Float)
Maker) and a stripe data body (SDE: Stripe d)
ata entity), and a plurality of stripes are continuous. A stripe data body (SDE) is a protected stripe coded d (PSCD).
ata), an ESC (Escape) code, and a termination marker.

The binary image data (BID) includes
Although the ITU-T (formerly CCITT) and ISO (International Organization for Standardization) recommendations define several types, in the present embodiment, comment markers are used. As shown in FIG. 2, the comment marker is composed of an ESC (Escape) code, a comment (COMMENT), and byte-length and variable-length private data (user data).
This private data has a variable length, and by designating it as a byte length, private data having a different data length can be appropriately added.

ITU-U recommendation T. 85, the interpretation of the information (private data) transferred by the comment marker depends on the implementation. In the facsimile apparatus 1, the comment marker
When there is no mode change when transmitting multi-page JBIG image data, as shown in FIG.
A PS signal (multi-page signal) is added, and when there is a mode change, an EOM signal (message end signal) is added and transmitted as shown in FIG. Then, when there is a mode change, as shown in FIG. 3B, after the EOM signal, the contents of the mode change, such as the line density, the encoding method, the paper width, the paper length, and the I / O rate, are further added. Mode information is added. Numerical values described below each part in FIGS. 2 and 3 represent the number of bytes. Therefore, the private portion of the comment marker at the time of the MPS signal is 1 byte, and the private portion of the comment marker at the time of the EOM signal is 3 bytes.

When the facsimile apparatus 1 reads the image data of the original with the scanner 7 at the time of transmission, the facsimile apparatus 1 transfers the image data read by the scanner 7 line by line to the line buffer on the RAM 4 and transfers it to the line buffer for one line. Then, the data is transferred from the line buffer to the encoding / decoding unit 8 and encoded by the encoding / decoding unit 8 in the JBIG system. The facsimile apparatus 1 uses the JB
The image data encoded by the IG method is transferred to the ECM buffer secured on the image memory 9, transferred from the ECM buffer to the modem 5, modulated by the modem 5, and transmitted via the network control unit 6. . Also, the facsimile machine 1
The image data read in advance by the scanner 7 is encoded by the encoding / decoding unit 8 using a predetermined normal encoding method other than the JBIG method, and stored in the SAF memory area of the image memory 9. , The image data is read from the SAF memory area, temporarily decoded into raw data by the encoding / decoding unit 8, and transferred to the line buffer of the RAM 4.
Thereafter, the data is encoded by the encoding / decoding unit 8 line by line in accordance with the encoding method of the other party's facsimile apparatus, and transmitted as described above.

At the time of reception, the facsimile apparatus 1 demodulates the image data received via the modem 6 with the modem 5 and stores the demodulated data in the ECM buffer of the image memory 9.
The data is sequentially transferred from the buffer to the encoding / decoding unit 8 and decoded by the encoding / decoding unit 8. The facsimile machine 1
The image data decoded by the encoding / decoding unit 8 is stored in the RAM 4
When one page of image data is expanded in the page memory secured above, and one page of image data is expanded in the page memory, the image data is sequentially transferred to the plotter 10 and
To record the image on the recording paper.

Next, the operation will be described. The facsimile apparatus 1 includes an encoding / decoding unit 8 of the JBIG system. When transmitting multi-page image data, the information is used as a comment marker of the JBIG image depending on whether or not there is a mode change in the middle. The feature is that image data is continuously transmitted without adding and transmitting and exchanging protocols between pages.

Hereinafter, this JBIG communication control process will be described with reference to FIG.
This will be described based on the flowcharts of FIG.

First, the processing at the time of transmission will be described with reference to FIGS. Facsimile machine 1 on the transmitting side
As shown in FIG. 4, when a predetermined transmission operation is performed on the operation display unit 8 and a start key is pressed, the CPU 2
A call is made to the destination specified by the network control unit 6 (step S
1) Call the other party's facsimile machine, and send the NSF signal (called terminal identification signal) or DSF transmitted from the other party.
Receiving the IS signal (digital identification signal) (step S
2) The called terminal identification information of the received NSF signal is stored in RAM
4 (step S3).

Next, the CPU 2 analyzes the NSF signal, and can transmit image data by the JBIG method, and can transmit a multi-page by a comment marker (hereinafter referred to as transmission by the present method). Then, it is checked whether a bit indicating that transmission by this method is possible is set in the NSF signal (step S4), and if transmission by this method is not possible, transmission processing in normal mode is performed (step S5).

In step S4, when transmission by this method is possible, the CPU 2 performs training after transmitting an NSS signal (non-standard function setting signal) (step S4).
6) When the training is successful and a CFR signal (reception preparation confirmation signal) is received (step S7), the scanner 7
When sending image data of a document set in
When the scanner 7 is started to read the image data of the original and start the transfer to the line buffer of the RAM 4 as described above, or when the image data in the image memory 9 is transmitted, the SAF of the image memory 9 is used. Open the memory, that is, sequentially read out the image data of the transmission file from the SAF memory area of the image memory 9 and
The transfer of the AM4 to the line buffer is started (step S8). Next, the CPU 2 creates a binary image header (BIH) of the JBIG system (step S9), and transfers the image data from the line buffer to the encoding / decoding unit 8 when the line buffer of the RAM 4 is full. Then, the encoding / decoding unit 8 encodes the image data according to the JBIG encoding method (step S10).

The CPU 2 sequentially performs the above-described processing, and when the reading of one page by the scanner 7 is completed or the reading of one page from the SAF memory of the image memory 9 is completed, the JBIG of the one page is completed. It is checked whether encoding is completed (step S11), and JBI for one page is checked.
When the G encoding is completed, it is checked whether there is a next page as shown in FIG. 5 (step S12). If there is a next page in step S12, the CPU 2 checks whether there is a mode change (step S13), and if there is no mode change, as shown in FIG.
M is added to the comment marker of the binary image data (BID) of the image.
The PS signal (multi-page signal) is set, the image data for the one page is transmitted, and the process returns to step S8 in FIG. 4 (step S14).

The CPU 2 reads the image data of the next page by the scanner 7 or the SAF memory of the image memory 9 in the same manner as described above, and similarly encodes the image data by the encoding / decoding unit 8 in the JBIG encoding system. When the encoding is completed, it is checked whether there is a next page (step S12), and if there is a next page, it is checked whether there is a mode change (step S13).

In step S13, if there is a mode change,
As shown in FIG. 3B, the CPU 2 adds the line density, the encoding method, the paper width, the paper length, and the I / O to the comment marker of the binary image data (BID) of the JBIG image. E with mode information such as O rate added at the end
Set the OM signal (message end signal)
The image data for the page is transmitted, and the process returns to step S8 in FIG. 4 (step S15). In this case, when setting the mode information such as the line density, the encoding method, the paper width, the paper length, and the I / O rate, which are the contents of the mode change, the above step S
In step 3, based on the called terminal identification information of the NSF signal stored in the RAM 4, the mode content is set within a range not exceeding the function of the partner facsimile machine.

Thereafter, the CPU 2 reads the image data of the next page by the scanner 7 or from the SAF memory of the image memory 9 in the same manner as described above, and encodes the image data by the encoding / decoding unit 8 in the JBIG encoding method. (Steps S8 to S11). When the encoding is completed, it is checked whether there is a next page (Step S12). When there is a next page, the CPU 2 sets the MPS signal or the EOM signal in the comment marker according to the presence or absence of the mode change, and returns to step S8 in FIG. 4 (steps S13, S14, S15).

In step S12, when there is no next page, the CPU 2 stops the operation of the scanner 7, or
Close (close) the SAF memory of the image memory 9
(Step S16), an EOP signal (procedure end signal) is transmitted (Step S17). Then, from the receiving side, the MCF
When a signal (message confirmation signal) is received (step S
18) When it is determined that the transmission of the image data has been properly completed, the DCN signal (disconnection command signal) is transmitted (step S).
19), release the line and end the process (step S)
20).

Next, the processing at the time of reception will be described with reference to FIGS. In the facsimile apparatus 1, when there is an incoming call (step P1), the CPU 2 controls the network control unit 6 to transmit an NSF signal and a DIS signal (step P2), and an NSS signal / DCS signal (digital command signal). To perform training (step P
3). When the training is successful, the CPU 2
A signal (reception preparation confirmation signal) is transmitted to start driving the plotter 10 and enter a reception mode for image data (step P5).

Thereafter, when entering the image data receiving mode, the CPU 2 firstly transmits the JBIG transmitted first.
The binary image header (BIH) of the system is analyzed (step P
6), set the decoding mode of the encoding / decoding unit 8 according to the contents, and perform JBIG decoding (step P
7). The CPU 2 sequentially stores the decoded image data in a page memory secured on the RAM 4 and checks whether the decoding of one page is completed (Step P8). When the decoding of one page is completed in Step P8, Then, as shown in FIG. 7, it is checked whether there is a comment marker (step P9).

If there is a comment marker in step P9, CPU 2 checks whether the comment marker is an EOM signal (step P10), and if not, checks whether it is an MPS signal (step P1).
1). In step P11, if there is no MPS signal, C
PU2 performs another process (step P12), and the MPS
In the case of a signal, it is determined that there is no mode change, and the process returns to step P5 in FIG. 6 to operate the plotter 10 and perform the same processing as described above for the next page (steps P5 to P5).
Step P10).

In step P10, the comment marker is set to EO
In the case of the M signal, the CPU 2 determines that there is a mode change, resets the mode according to the content of the mode information of the comment marker (step P13), and causes the plotter 10 to perform a page break operation. (Step P14),
Returning to step P5 of FIG. 6, the image data of the next page is processed in the same manner as described above (steps P5 to P5).
10).

The same processing as the above-mentioned steps P5 to P14 is sequentially performed. If there is no comment marker in step P9, the CPU 2 determines that there is no next page, and
A post message after the image data is received (step P15), and after the operation of the plotter 10 is completed (step P16), an MCF signal is transmitted (step P17).
Thereafter, when a DCN signal is received (step P18),
The line is released, and the process ends (step P19).

As described above, according to the present embodiment, JB
When image data encoded by the IG method is transmitted by the G3 facsimile communication procedure and there is no change in the communication mode during communication, a multi-page signal (MPS signal) is added to the comment marker of the JBIG encoding method and transmitted. , Without exchanging protocols between pages,
Image data can be transmitted continuously, and high-quality image data can be transmitted at high speed.

When image data encoded by the JBIG method is transmitted by the G3 facsimile communication procedure and the communication mode is changed during communication, a message end signal (EOM signal) is added to the comment marker of the JBIG method. Even if there is a mode change between pages, image data can be transmitted continuously without exchanging protocols between pages,
High-quality image data can be transmitted at high speed.

Further, when the image data encoded by the JBIG method is transmitted by the G3 facsimile communication procedure, a called terminal identification information signal transmitted from the receiving side is stored,
If there is a change in communication mode during communication, JBIG
Since the message end signal is added to the comment marker of the encoding method and transmitted, and the mode change within the range of the function of the receiving side is performed based on the called terminal identification information signal, the mode change between pages is performed. Even in some cases, image data can be transmitted continuously without exchanging protocols between pages, and transmission in an appropriate mode can be performed. Can be sent to

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.

For example, in the above embodiment, G3
The present invention is applied to the case where facsimile communication is performed by the facsimile communication procedure, but is not limited to facsimile communication by the G3 facsimile communication procedure. That is, in the facsimile communication according to the G3 facsimile communication procedure, the effect is remarkable because the protocol is performed using a slow modem of 300 bps, but the same can be applied to the facsimile communication according to the G4 facsimile communication procedure. .

[0056]

According to the facsimile apparatus of the first aspect of the present invention, the image data encoded by the JBIG system is converted to the G3 format.
At the time of transmission by the facsimile communication procedure, if there is no change in the communication mode during the communication, the multi-page signal is added to the comment marker of the JBIG encoding method and transmitted, so that the protocol is not exchanged between pages.
Image data can be transmitted continuously, and high-quality image data can be transmitted at high speed.

According to the facsimile apparatus of the second aspect of the present invention, when image data encoded by the JBIG system is transmitted by the G3 facsimile communication procedure, if there is a change in the communication mode during the communication, the comment of the JBIG encoding system is used. Since the message is sent with the message end signal and the changed mode information added to the marker, even if there is a mode change between pages, image data must be transmitted continuously without exchanging protocols between pages. And high-quality image data can be transmitted at high speed.

According to the facsimile apparatus of the third aspect of the present invention, when image data encoded by the JBIG method is transmitted by the G3 facsimile communication procedure, the non-standard function identification signal transmitted first from the receiving side is stored. When there is a change in the communication mode during communication, a message end signal is added to the comment marker of the JBIG encoding method and transmitted, and based on the standard function identification signal,
Since the mode change within the range of functions that may be changed on the receiving side, even if there is a mode change between pages, without exchanging protocols between pages,
Image data can be transmitted continuously,
Transmission can be performed in an appropriate mode, and higher-quality image data can be transmitted at high speed.

[Brief description of the drawings]

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

FIG. 2 is a diagram showing a configuration of a binary image body of a JBIG image.

FIGS. 3A and 3B are diagrams showing detailed configurations when there is no mode change of the comment marker in FIG. 2 (a) and when there is a mode change (b).

FIG. 4 is a JBI at the time of transmission by the facsimile apparatus of FIG. 1;
9 is a flowchart illustrating G communication control processing.

FIG. 5 is a JBI at the time of reception by the facsimile apparatus of FIG. 1;
9 is a flowchart illustrating G communication control processing.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Facsimile apparatus 2 CPU 3 ROM 4 RAM 5 Modem 6 Network control part 7 Scanner 8 Encoding / decoding part 9 Image memory 10 Plotter 11 Operation display part 12 Bus

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] November 19, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

[Brief description of the drawings]

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

FIG. 2 is a diagram showing a configuration of a binary image body of a JBIG image.

FIGS. 3A and 3B are diagrams showing detailed configurations when there is no mode change of the comment marker in FIG. 2 (a) and when there is a mode change (b).

FIG. 4 is a JBI at the time of transmission by the facsimile apparatus of FIG. 1;
9 is a flowchart illustrating G communication control processing.

FIG. 5 is a flowchart showing processing subsequent to the JBIG communication control processing at the time of transmission in FIG. 4;

FIG. 6 is a JBI at the time of reception by the facsimile apparatus of FIG. 1;
9 is a flowchart illustrating G communication control processing.

FIG. 7 is a flowchart showing a process subsequent to the JBIG communication control process at the time of reception in FIG. 6;

[Description of Signs] 1 Facsimile machine 2 CPU 3 ROM 4 RAM 5 Modem 6 Network control unit 7 Scanner 8 Encoding / decoding unit 9 Image memory 10 Plotter 11 Operation display unit 12 Bus

Claims (3)

[Claims] 1. A facsimile apparatus for compressing an image of a transmission original into a JBIG image and facsimile transmitting the JBIG image according to a predetermined G3 facsimile communication procedure. If there is no mode change, the compressed JBIG image 2
A facsimile apparatus wherein a multi-page signal is inserted into a comment marker of value image data and transmitted. 2. A facsimile apparatus for compressing an image of a transmission original into a JBIG image and performing facsimile transmission according to a predetermined G3 facsimile communication procedure. When there is a mode change, a message end signal and mode information indicating the content of the changed mode are inserted into a comment marker of the binary image data of the compressed JBIG image and transmitted when the mode is changed. Facsimile machine. 3. In the facsimile transmission, a called terminal identification signal transmitted first from a destination is stored,
3. The facsimile apparatus according to claim 2, wherein, when the mode is changed, the mode after the change is set within a range of the function of the destination specified by the called terminal identification signal.