JPH11122448A - Communication terminal equipment and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a communication terminal equipment capable of making communication by freely designating the main scanning width of picture data, and a recording medium. SOLUTION: At the time of communicating picture data including plural documents with the different number of width dots and the different number of lines, numerical information related with the number of width dots and the number of lines of each document is designated by an NSS(non-standard setup) signal prior to a DCS(digital command signal) signal. Also, at the time of this communication, when picture data are MMR(modified-modified read) encoded, and the number of width dots of the previous line is larger than those of the following line, white dots are virtually used as reference lines for the short part of the previous line.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a communication terminal device having a communication function such as facsimile communication and a recording medium storing a program for causing a computer to execute the operation of the communication terminal device.

[0002]

2. Description of the Related Art Generally, in a facsimile machine,
ITU-T (International Telecommunication Union-Telecommunication Standardization Sector:
International Telecommunication Union-Telecommun
Communication Standardization Sector), a communication procedure signal defined in the T series recommendation for telematic services, for example, a digital command (DCS: Di
(Gital Command Signal) signal, image data is communicated in a state where a predetermined standard size, that is, a standard main scanning width based on one of the A4, B4, and A3 sizes is specified in advance. When receiving the image data, the received received image data is decoded and displayed and recorded based on the standard main scanning width.

[0003]

However, recently, a facsimile modem is attached to a computer, and image data is transmitted from the computer to the facsimile apparatus. On this computer, a manuscript of any size can be created based on the intention of the creator. Here, when image data created on the computer is transmitted by facsimile as it is,
Lines that do not match the standard main scanning width may be included in the image data. Such image data is treated as an error in the facsimile machine on the receiving side, and there is a problem that accurate display recording of the received image data becomes impossible.

In order to solve this problem, white data is added to the end of each line for lines less than the fixed main scanning width, and lines exceeding the fixed main scanning width are reduced to reduce the entire image data. It is necessary to transmit in a state where the main scanning width is set to the fixed main scanning width. As described above, during communication of image data, there is a problem that extra processing is required to make the main scanning width of the image data equal to the standard main scanning width, which is troublesome.

[0005] The present invention has been made by paying attention to such problems existing in the prior art. An object of the present invention is to provide a communication terminal device and a recording medium which can communicate by freely specifying a main scanning width of image data.

[0006]

According to a first aspect of the present invention, there is provided a communication terminal apparatus for performing facsimile communication by specifying a main scanning width by a communication procedure signal. Control means is provided for performing communication in a state in which numerical information relating to the main scanning width is designated by a predetermined procedure signal, and for controlling received image data to be decoded based on the numerical information.

According to a second aspect of the present invention, in the communication terminal device according to the first aspect, the control means performs communication in a state where numerical information relating to the number of sub-scanning lines is designated by a predetermined procedure signal. , The received image data is controlled to be decoded based on the numerical information on the number of sub-scanning lines.

According to a third aspect of the present invention, in the communication terminal device according to the first or second aspect, the control means includes:
When communicating image data composed of a plurality of blocks having different main scanning widths through a two-dimensional code, when performing two-dimensional encoding or decoding of a line having a main scanning width larger than the previous line, a lack of the previous line is required. Is controlled to be referred to as a white dot.

According to a fourth aspect of the present invention, there is provided a recording medium recording a program for causing a computer to execute the operation of the communication terminal device according to any one of the first to third aspects. Things.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment) A first embodiment in which the communication terminal device of the present invention is embodied in a facsimile machine will be described below with reference to FIGS.

As shown in FIG. 1, a central processing unit (CP)
U) 21 controls the operation of each part of the facsimile machine. The read only memory (ROM) 22 stores various control programs necessary for the operation of the facsimile machine. The random access memory (RAM) 23 temporarily stores control programs read from a recording medium 26 to be described later via the recording medium reading unit 25, data obtained by executing the control programs, and the like. The CPU 21, the ROM 22, and the RAM 23 constitute control means capable of setting an error retransmission function (ECM) procedure.

The document reading section 24 reads an image on a document placed on a document placing plate or the like at the time of facsimile communication or the like, and outputs black and white binary image data to the CPU 2.
Output to 1. The recording medium reading unit 25 reads recording data from the recording medium 26 and outputs the data to the CPU 21. The recording data of the recording medium 26 includes various control programs necessary for the operation of the facsimile apparatus, original image data recorded by a recording device (not shown), and the like.

The image memory 27 temporarily stores received image data received by facsimile communication, read image data read by the document reading unit 24 or the recording medium reading unit 25, and the like. The image memory 27 includes a read image data storage area 27a for storing read image data, an encoded data storage area 27b for storing encoded image data, and an image data storage area 27 for storing decoded image data.
It has various regions such as c. The recording unit 28 records the received image data or the read image data on recording paper.

The display unit 29 includes a liquid crystal display panel, a light emitting diode, and the like.
Various kinds of information such as the operation state of the device are displayed, such as “device abnormality”. The operation unit 30 is provided with various operation keys such as a start key and a numeric keypad, and operates these operation keys to start and stop the apparatus and set a predetermined mode.

The telephone line L1 is connected to a CP via a modem 31 and a network control unit (NCU) 32.
It is connected to U21. The modem 31 modulates and demodulates transmission and reception data. The NCU 32 has a function of controlling the closing and opening of each telephone line L1, and a function of detecting transmission and reception of dial pulses corresponding to the fax number of the other party.

When receiving facsimile communication according to the ECM procedure, the CPU 21 divides image data into blocks each having a predetermined data amount (64 kbytes), and divides each block into predetermined frames (256 frames). They are received one by one in order. CPU2
When an error due to line noise or the like is present in the image data of one block, a partial page request (PPR) signal designating the frame number of the error location is returned to the transmitter side. Requesting retransmission of the image data.

When transmitting the read image data under the ECM setting based on the control program stored in the ROM 22, the CPU 21 modifies the black and white binary image data as a two-dimensional code. Encode into a read (MMR) code. Also,
When receiving the received image data composed of the MMR code,
The received image data is decoded into image data.

As shown in FIGS. 2 and 3, when a document to be transmitted includes a plurality of documents (three in this case) as blocks having different main scanning widths, the main document of each document is transmitted. Table data T1 for storing the number of width dots as numerical information on the scanning width and the number of sub-scanning lines as numerical information on the number of sub-scanning lines are stored. Here, documents # 1 and # 2
Are shorter than the standard A4 size main scanning width. Document # 3
Are those whose main scanning width matches the standard A4 size main scanning width.

When reading the transmission document by the document reading unit 24 or the recording medium reading unit 25, the number of width dots and the number of lines of each document are automatically calculated based on the read image data. , Are stored in the table data T1. That is, the facsimile apparatus of this embodiment can freely specify the main scanning width of the image data to be transmitted. (Hereinafter, this function is referred to as a "free width setting function.") When transmitting image data including a plurality of documents having different width dot numbers and line numbers as shown in FIG. The MMR coding method is selected depending on whether or not the communication terminal device has the same free width setting function.

When transmitting data to a communication terminal device capable of setting the free width setting function, the CPU 21 first sets each document # in the table data T1 as shown in FIG.
The number of width dots and the number of lines of # 1 to # 3 are converted into a digital command signal (DCS: Digital Command Signa
Prior to l), it is transmitted in a facsimile information field (FIF) of a non-standard facility set-up (NSS) signal as a predetermined procedure signal. In the FIF of the NSS signal, information on the number of dots in the width and information on the number of lines are alternately stored in order from document # 1.

Then, as shown in FIG.
21 encodes the image data by MMR according to the following method. That is, the CPU 21 first performs MMR encoding on the document # 1 sequentially for each line. Here, since the next document # 2 has a larger number of dot widths than the document # 1, the last line of the document # 1, which is a reference line of the first line of the document # 2, has a shortage of data at the end thereof. Has occurred. Therefore, the CPU 2
1 assumes that there is a white dot in the missing part,
The first line of document # 2 is MMR-encoded. Then, the CPU 21 sequentially performs MMR encoding of the document # 2 for each line.

Next, the CPU 21 sets the document # 2
Document # 3 having a larger width dot number is sequentially subjected to MMR encoding for each line in the same manner as document # 2.
The MMR-encoded image data is 64 kbytes.
The data is sequentially transmitted every e.

On the other hand, when transmitting the free width setting function to a communication terminal device that cannot set the free width setting function, as shown in FIG. A main scanning width of a fixed size (here, A4) capable of accommodating # 3 is designated by a DCS signal as a designated width dot number corresponding to the designated main scanning width. Then, when the number of width dots of each line is less than the designated number of dots, the CPU 21 adds a white dot to the end of each line and performs MMR encoding in order to make it equal to the designated main scanning width. The MMR encoded image data is 1
It is transmitted sequentially for each page.

As shown in FIG. 4, upon receiving image data, prior to the DCS signal, the NSS in which the number of width dots and the number of lines of a plurality of documents are stored in the FIF.
When a signal is detected, the CPU 21 stores the number of width dots and the number of lines of each document in table data T1 shown in FIG. Then, the table data T1
, The MMR-encoded received image data is decoded into image data in order from document # 1.

For example, when each document of the received image data has a configuration as shown in FIG. 2, FIG.
Are decoded into image data as shown in FIG. That is,
The CPU 21 first determines the number of width dots of document # 1, 8
The image data for 381 lines is decoded into image data every 64 dots. Next, since document # 2 has a larger number of dots in width than document # 1, CPU 21
In a state where a white dot is imagined in a deficient portion on the end side of the last line of the document # 1, the first line of the document # 2 having a width dot number of 1296 dots is decoded using the last line as a reference line.

Next, the CPU 21 decodes the image data of 761 lines obtained by subtracting the head line for every 1296 dots as each line of the document # 2. further,
The remaining 1728 dots in the main scanning direction and 1143 in the sub scanning direction
The image data for the line is sequentially decoded as document # 2 as each line of document # 3 having a larger number of dots in width than document # 2.

On the other hand, if the NSS signal is not detected, or if the NSS signal does not contain numerical information relating to the document structure of the image data, the CPU 21
Decodes the received image data based on the number of dots of a specified size of a fixed size specified by the DCS signal.

Next, a case in which the facsimile apparatus configured as described above performs a transmission operation by facsimile communication will be described with reference to the flowcharts of FIGS. Note that this flowchart corresponds to the ROM 22
Under the control of the CPU 21 based on the control program stored in the storage medium and the control program read from the recording medium 26 by the recording medium reading unit 25.

When the fax number of the other party is input using the numeric keypad or the like of the operation unit 30, a dial pulse corresponding to the fax number is transmitted from the NCU 32 to call the communication terminal apparatus of the other party (S1). ). In response to the call, the other party's communication terminal device (here, a receiver)
From the called terminal identification (CED)
ication) signal, followed by a non-standard function identification (NSF: No
n-Standard Facilities signal and digital identification (D
It waits for an IS (Digital Identifiacation Signal) signal to be transmitted (S2). When the NSF signal is detected in S2, it is determined based on the NSF signal whether or not the receiver is a device capable of setting the free width setting function (S3).

If it is determined in step S3 that the receiver can receive image data having a free width other than the standard size, a free width transmission process (S4) shown in FIG. 6 is executed.
On the other hand, when it is determined that the receiver cannot receive image data having a free width other than the standard size, the standard width transmission process (S5) shown in FIG. 7 is executed. When the entire amount of the read image data is transmitted by the free width transmission processing or the fixed width transmission processing, the procedure ends (EOP: End of Procedure).
s) A signal is transmitted (S6), and the transmission process ends.

When the free-width transmission process is selected in S3, first, as shown in FIG.
Numerical information on the number of width dots and the number of lines of each document is read from the table data T1 stored in the storage 23 (S11). Then, the number of width dots and the number of lines of each document are stored in the NSS signal,
It is transmitted together with the DCS signal set in the M procedure (S
12).

Next, one line of the read image data is read from the read image data storage area 27a of the image memory 27 (S13), MMR encoded (S14), and the encoded data storage area of the image memory 27 is read. 27b (S15). Then, the encoded data storage area 27b
Then, it is determined whether or not there is untransmitted image data of an amount of 64 kbytes or more (S16).

If it is determined in step S16 that the amount of untransmitted image data is equal to or larger than 64 kbytes, then the process proceeds to step S16.
Image data for 4 kbytes is transmitted (S17). Next, it is determined whether all the lines of one document have been MMR-encoded (S18). On the other hand, if it is determined in S16 that the amount of untransmitted image data has not reached 64 kbytes, the process proceeds to S18 bypassing S17.

If it is determined in step S18 that the MMR encoding of all the lines of one document has not been completed, the process returns to step S13 to read the next one line of the read image data. Then, the processes of S13 to S18 are repeated until the MMR encoding of all lines of one document is completed.

On the other hand, if it is determined in S18 that the MMR encoding of all lines of one document has been completed, it is determined whether or not the next document exists (S19). When it is determined in S19 that the next document exists, it is determined whether the number of width dots of the next document exceeds the number of width dots of the previous document (S20). In this S20, when it is determined that the number of width dots of the next document is equal to or less than the number of width dots of the previous document,
Returning to S13, the next one line of the read image data is read. Then, the processes of S13 to S18 are repeated until the MMR encoding of all lines of the document is completed.

On the other hand, if it is determined in step S20 that the number of width dots of the next document exceeds the number of width dots of the previous document, the shortage of the number of width dots at the end of the last line of the previous document is determined. Then, a white dot is imagined (S21). Next, returning to S13,
The first line of the next document is read.
Then, in S14, this top line is subjected to MMR encoding with reference to the last line of the previous document in which a white dot is imagined as a missing portion. Thereafter, S13 to S1 until MMR encoding of all lines of the document is completed.
Step 8 is repeated.

If it is determined in S19 that there is no next document, all documents are
The encoded data storage area 2 is assumed to have been MR encoded.
It is determined whether or not untransmitted image data exists in 7b (S22). If it is determined in S22 that there is untransmitted image data, the remaining image data is transmitted (S23), and the free width transmission process ends. On the other hand, S
If it is determined in step 22 that there is no untransmitted image data, the free-width transmission process ends.

When the fixed width transmission process is selected in S3, first, as shown in FIG.
The maximum number of width dots among the number of width dots of each document is read from the table data T1 stored in the storage device 23 (S26). Then, the designated width dot number and the ECM procedure corresponding to the standard size larger than this maximum width dot number are designated and transmitted by the DCS signal (S27).

Next, one line of the read image data is read from the read image data storage area 27a of the image memory 27 (S28), and the number of width dots of the line is set to the specified width dot number designated by the DCS. It is determined whether it is less than (S29). In this S29, when it is determined that the number of dots of the line is less than the designated number of dots,
White dots are added to the insufficiency on the end side of the line so that the line has the designated number of dots (S30).
MR encoding is performed (S31). On the other hand, in S29,
If it is determined that the width dot number of the line matches the designated width dot number, the process bypasses S30 and proceeds to S31.
Is subjected to MMR encoding.

The encoded image data is temporarily stored in the encoded data storage area 27b of the image memory 27 (S32). Then, in the encoded data storage area 27b,
It is determined whether there is untransmitted image data of 64 kbytes or more (S33). In S33, if it is determined that the untransmitted image data is equal to or more than 64 kbytes, the image data of 64 kbytes is transmitted (S33).
34). Next, it is determined whether or not all the lines have been MMR-encoded (S35).

On the other hand, if it is determined in step S33 that the untransmitted image data has not reached 64 kbytes, the process returns to step S28, where one line of read image data is read, and all lines are subjected to MMR encoding. Until S28
Steps S35 to S35 are repeated.

If it is determined in S35 that the MMR encoding of all lines has been completed, it is determined whether or not untransmitted image data exists in the encoded data storage area 27b (S36). If it is determined in S36 that there is untransmitted image data, the remaining image data is transmitted (S37), and the fixed width transmission process ends.
On the other hand, if it is determined in S36 that there is no untransmitted image data, the fixed-width transmission process ends.

Next, a case in which the facsimile apparatus configured as described above performs a receiving operation by facsimile communication will be described with reference to the flowcharts of FIGS. Note that this flowchart is described in the ROM 2
2 and under the control of the CPU 21 based on the control program read from the recording medium 26 by the recording medium reading unit 25.

Now, the communication terminal device of the other party (here,
When a calling bell signal is received from the exchange due to the calling of the (transmitter) (S41), an NSF signal containing information on the free width setting function and the like and a DIS signal containing information on the ECM procedure setting and the like are output. It is sent (S42). Next, in response to the DIS signal, detection of a DCS signal transmitted from the transmitter is awaited (S43). When the DCS signal is detected in S43, it is determined whether or not the NSS signal sent along with the DCS signal contains numerical information on the number of width dots and the number of lines of each document other than the standard size. (S44).

In S44, when the numerical information is stored in the NSS signal, and it is determined that the transmitted image data has a free width, a free width receiving process (S45) shown in FIG. 9 is executed. You. On the other hand, if it is determined that the numerical information is not included in the NSS signal and the transmitted image data has a fixed width, a fixed width reception process (S46) shown in FIG. 10 is executed. If the NSS signal is not detected, the transmitted image data is regarded as having a fixed width, and the fixed width receiving process (S
46) is executed.

When the entire amount of the received image data is received by the free width reception processing or the fixed width reception processing, a message confirmation (MCF: Message Confirmation S) is performed.
ignal) signal is transmitted (S47), and the receiving process ends.

When the free-width reception process is selected in S44, first, as shown in FIG. 9, numerical information on the number of width dots and the number of lines of each document in the NSS signal is stored in the RAM 23. Is stored in a predetermined location of the table data T1 stored in the table (S51). Then, the counts of the number of width dots and the number of lines of each document are set (S52). Subsequently, when the MMR encoded image data is received, it is temporarily stored in the encoded data storage area 27b of the image memory 27 (S53).

Next, one line of the received image data is set in accordance with the number of width dots of the document including the one line.
The data is read from the encoded data storage area 27b and decoded into image data (S54). When this image data is set in the image data storage area 27c of the image memory 27 (S55), it is determined whether or not decoding of all lines of one document has been completed (S56).

If it is determined in S56 that decoding of all lines of one document has not been completed,
Returning to S54, the next one line of the received image data is read. Then, the processing of S54 to S56 is repeated until the decoding of all the lines of one document is completed.

On the other hand, if it is determined in S56 that decoding of all the lines of one document has been completed, it is determined whether or not the next document exists (S57). If it is determined in S57 that the next document exists, it is determined whether or not the number of width dots of the next document exceeds the number of width dots of the previous document (S58). In this S58,
If it is determined that the number of width dots of the next document is equal to or smaller than the number of width dots of the previous document,
4, the next one line of the received image data is read. Then, the processing of S54 to S56 is repeated until decoding of all the lines of the document is completed.

On the other hand, if it is determined in step S58 that the number of width dots of the next document exceeds the number of width dots of the previous document, the shortage of the number of width dots at the end of the last line of the previous document is determined. Then, a white dot is imagined (S59). Next, returning to S54,
The first line of the next document is read.
Then, in S59, the top line is decoded from the MMR code with reference to the last line of the previous document in which a white dot is imagined as a missing portion. Thereafter, S54 to S56 until the decoding of all the lines of the document is completed.
Is repeated.

If it is determined in S57 that there is no next document, it is determined that all documents have been decrypted, and the free width receiving process ends. If the fixed width transmission process is selected in S44, the designated width dot number corresponding to the fixed size specified by the DCS signal is stored in the RAM 23 (S6).
Along with 1), the count of the designated width dot number is set (S62). When the MMR encoded image data is received, it is temporarily stored in the encoded data storage area 27b of the image memory 27 (S63).

Next, one line of the received image data is read out from the encoded data storage area 27b in accordance with the designated width dot number and decoded into image data (S6).
4). When this image data is set in the image data storage area 27c of the image memory 27 (S65),
It is determined whether or not decoding of all lines of the received image data has been completed (S66).

If it is determined in step S66 that decoding of all lines has not been completed, the process returns to step S64 to read the next one line of the received image data. Until decoding of all lines is completed, S64 to S66
Is repeated. On the other hand, if it is determined in S66 that decoding of all lines has been completed, the fixed-width reception process ends.

According to the first embodiment configured as described above, the following effects can be obtained. In the first embodiment, communication is performed in a state where the number of width dots of image data is designated as numerical information on the main scanning width in the NSS signal. Also, received image data is decoded based on the numerical information contained in the NSS signal from the transmitter. Therefore, the image data can be communicated by setting the number of width dots of the image data to any size other than the A4, B4, or A3 size. Therefore, it is possible to easily cope with image data of a number of dots of a width other than the standard size created by a computer, for example.

In the first embodiment, communication is performed with the number of lines of image data in the sub-scanning direction specified in the NSS signal as numerical information on the number of sub-scanning lines, similarly to the number of width dots. It has become. For this reason, for example, even in the case of image data in which one page includes a plurality of documents each having a different number of width dots and a different number of lines, the communication can be performed as it is without aligning the end of each line. Can be offered.

In the first embodiment, in order to communicate image data composed of a plurality of documents having different numbers of width dots, a line having a larger number of dots than the previous line is decoded from the MMR code or the MMR code. In such a case, the missing portion on the end side of the previous line is virtually referred to as a white dot. Therefore, encoding and decoding of image data can be performed without adding white dots to the insufficiency in order to align the end of each line. Therefore, it is possible to suppress the consumption of the encoded data storage area 27b of the image memory 27 and the increase in the data capacity during communication. In addition, when encoding and decoding image data, the load on the CPU 21 can be reduced, and the processing can be performed quickly.

In the first embodiment, if the other device does not have a free width setting function when transmitting image data having a width dot number other than the standard size, the DCS signal is used. , Specify a standard size that can support documents with the maximum number of dots in width. Then, a white dot is added to a part of the image data where the number of dots in the width is insufficient, and each line is MMR-encoded and transmitted. For this reason, image data having a width dot number other than the standard size can be transmitted regardless of the presence / absence of the free width setting function of the partner device.

(Second Embodiment) FIGS. 11 to 15 show a second embodiment in which the communication terminal device of the present invention is embodied in a computer operated by a control program read from a recording medium. It will be described based on.

As shown in FIG. 11, the computer is a CP
U21, ROM22, RAM23, recording medium reading unit 25
And an image memory 27. Further, the CPU 21 includes an image scanner 3 for reading image data of a document or the like.
6. A printer 37 as recording means for recording received image data and the like on recording paper, a display 38 as a display unit for displaying messages and image data, and a keyboard 39 as an operation unit for inputting various data are connected. Have been.

Further, a telephone line L 1 is connected to the CPU 21 via a fax modem 40. Then, the facsimile communication of the non-ECM procedure is performed between the facsimile modem 40 and the other communication terminal device via the telephone line L1.

Further, in the second embodiment, as shown in FIG. 12, in the transmission procedure for performing facsimile communication, the DCS signal is not used, and the setting conditions necessary for image data communication are all NSS. The signal is stored in the FIF of the signal. That is, in addition to the number of width dots and the number of lines of each of the documents # 1 to # 3 when transmitting to the partner machine capable of setting the free width setting function, the NSS signal includes, for example, T4 operation, communication speed, Information on linear density, maximum recording width, maximum recording length, encoding method, and the like is stored.

Then, as shown in FIG.
Transmits two-dimensionally coded image data including a document having a width dot number other than the standard size according to the following method. That is, the CPU 21 first sets the document # 1
Is encoded into a modified Huffman (MH) code. Then, using the head line as a reference line, each line of the document # 1 is sequentially encoded into a modified read (MR) code which is a two-dimensional code.

Next, for documents # 2 and # 3, the head line is first encoded into an MH code, as in document # 1. Then, each line of each document is encoded into an MR code using the first line as a reference line. Then, the MH and MR encoded image data are sequentially transmitted for each page.

Further, image data including a document having a width dot number other than the standard size as shown in FIG. 13 is transferred from a partner machine capable of setting the free width setting function to numerical information of the width dot number and the line number of each document. If the received image data is received together with the received image data, the received image data is decoded in reverse to the above-described transmission operation. That is, first, the head line of each MH-coded document is decoded based on the number of width dots of the document. The following lines of each MR-encoded document are sequentially decoded using the decoded first line as a reference line.

Next, the case of transmitting facsimile communication in the computer of the second embodiment will be described with reference to the flowchart shown in FIG.
Note that this flowchart is read from the recording medium 26 by the recording medium reading unit 25 to the CPU 21 and is stored in the RAM 2.
CPU 3 based on the control program stored in CPU 3
It progresses under the control of. In addition, in the flowchart shown in FIG. 14, portions corresponding to the flowchart of the transmission operation of the first embodiment shown in FIG. 5 are omitted.

Also in the second embodiment, first, FIG.
The processing similar to S1 to S3 in the flowchart shown in FIG. Then, as shown in FIG. 14, when it is determined in S3 that the receiver can receive the free-width image data, S11 to S13 of the free-width transmission process of the first embodiment shown in FIG. The processing similar to the processing of is performed in S71 to S73.

Next, it is determined whether or not the read line is the head line of each document (S74). If it is determined in S74 that the line is the first line, the image data of the line is MH-coded (S75). On the other hand, if it is determined that the line is not the first line, the image data of that line is
It is encoded (S76). Then, the encoded image data is temporarily stored in the encoded data storage area 27b of the image memory 27 (S77).

Subsequently, it is determined whether the encoding of the image data for one page is completed (S78). If it is determined in S78 that the encoding of the image data for one page has not been completed, the process returns to S73, and the processing of S73 to S78 in which the encoding of one page is completed is repeated. If it is determined in S78 that the encoding for one page has been completed, the encoded image data is transmitted (S79), and the process proceeds to S6 in the flowchart shown in FIG.
Then, the EOP signal is transmitted, and the transmission operation ends.

If it is determined in step S3 that the receiver cannot receive free-width image data, the process proceeds to step S80, which is the same as step S26 in the fixed-width transmission process of the first embodiment shown in FIG. The processing is executed. Then, an NSS signal specifying a standard size equal to or larger than the maximum number of width dots in the number of width dots of each document is transmitted (S81). Next, the processes of S82 to S84 similar to the processes of S28 to S30 of the fixed width transmission process of the first embodiment shown in FIG. 7 are executed, and the process shifts to S74. Then, after determining whether the line is the first line, the line is encoded into an MH code or an MR code (S75, S75).
76) Thereafter, the same processing as the transmission of the image data of the free width is performed.

Next, a case where the computer of the second embodiment performs a receiving operation of facsimile communication will be described with reference to a flowchart shown in FIG. This flowchart is based on the recording medium reading unit 25.
Is read from the recording medium 26 to the CPU 21 by the
CPU based on the control program stored in M23
It proceeds under the control of 21. In addition, in the flowchart shown in FIG. 15, portions corresponding to the flowchart of the receiving operation of the first embodiment shown in FIG. 8 are omitted.

Also in the second embodiment, the processes of S41 and S42 in the flowchart shown in FIG. 8 are performed. Then, as shown in FIG. 15, detection of the NSS signal transmitted from the transmitter is awaited (S86). When the NSS signal is detected, it is determined whether or not the NSS signal contains numerical information on the number of width dots and the number of lines of each document other than the standard size (S87).

In step S87, when the numerical information is stored in the NSS signal, and it is determined that the image data to be transmitted has a free width, the process proceeds to step S87 in the first embodiment shown in FIG. Processing similar to the processing of S51 to S53 of the free width receiving processing is executed in S88 to S90.

On the other hand, if it is determined in S87 that the numerical information is not included in the NSS signal and that the transmitted image data has a fixed width, the image data is reduced to the fixed size specified by the NSS. The corresponding designated width dot number is RA
It is stored in M23 (S91). Then, S62 and S6 of the fixed width receiving process of the first embodiment shown in FIG.
The same processing as the processing of No. 3 is executed in S92 and S90.

Next, one line of the received image data is read from the encoded data storage area 27b (S9).
3) It is determined whether the line is the head line of each document (S94). If it is determined in S94 that the line is the first line of each document, the line is decoded to image data, assuming that the line is encoded by the MH code (S95). on the other hand,
If it is determined that the line is not the head line of each document, it is determined that the line has been encoded into the MR code and decoded into image data (S9).
6).

Then, the decoded image data is set in the image data storage area of the image memory 27 (S97). Subsequently, it is determined whether or not the decoding of the image data for one page is completed (S98), and the processes of S93 to S98 are repeated until the decoding of one page is completed.
When the decoding of one page is completed, the flow shifts to S47 in the flowchart of FIG. 8, the MCF signal is transmitted, and the receiving process ends.

According to the second embodiment configured as described above, the following effects can be obtained. In the second embodiment, when communicating image data composed of a plurality of documents having different width dot numbers via a two-dimensional code, first, the first line of each document is set to the MH.
It is coded or decoded as a code. Then, the next line and subsequent lines of each document are encoded or decoded as an MR code. For this reason, even if the number of width dots of a document having image data is smaller than the specified number of width dots specified by the NSS signal, an extra white dot is not added to a portion where the number of width dots is insufficient. The image data can be communicated as it is.
Therefore, it is possible to reduce the data capacity during communication and the consumption of the image memory 27.

Further, since the head line of each document is always the MH code, it is possible to easily distinguish each document and control the code processing. Further, it is not necessary to compare the number of width dots between the preceding and succeeding documents, so that the load on the CPU 21 when encoding and decoding image data can be reduced. In addition, since the two-dimensional code to be used is the MR code, it is possible to easily cope with the case where, for example, the partner device cannot set the ECM procedure. (Modification) Each of the above embodiments can be modified and embodied as follows. And even in the case of such a configuration, it is possible to obtain substantially the same effects as those of the above embodiments.

In the facsimile apparatus of the first embodiment, when the partner machine cannot set the ECM procedure,
The image data encoding and decoding method according to the second embodiment may be adopted. Conversely, in the facsimile apparatus of the second embodiment, if the partner machine can set the ECM procedure, the image data encoding and decoding method of the first embodiment may be adopted. Good.

In the facsimile apparatus of the first embodiment, in the free width transmission processing shown in FIG. 6 and the free width reception processing shown in FIG. May be virtualized. Further, the insufficient portion of the number of width dots may be divided into two, and white dots may be imagined at the start end and the end.

In the facsimile apparatus of the first embodiment, S30 of the fixed width transmission process shown in FIG. 7, and S84 of the transmission operation shown in FIG. 14 in the second embodiment.
Then, a white dot may be added to the insufficient portion on the starting end side of the line. Further, a white dot may be added to the start and end portions by dividing the insufficient portion of the number of width dots into two.

In each of the above embodiments, an example is shown in which communication is performed by storing numerical information relating to the number of width dots, the number of lines, and the like of each document in an NSS signal.
The communication may be performed by being stored as an option in the CS signal FIF. In this case, the DCS signal is a predetermined procedure signal.

FIG. 3 shows an example in which the number of width dots of each of the documents # 1 to # 3 of the image data sequentially increases.
The present invention is not limited to such an arrangement order of each document, and it is needless to say that the present invention can be applied to image data in which a document having a large width dot number is followed by a document having a small width dot number. . For example, in FIG. 3, document # 1 and document # 2
Consider the image data in which the arrangement of the image data is changed. Here, when the head line of the next document # 1 having a smaller number of dots than the document # 2 is decoded from the MMR code or the MMR code, the document # 1
In the last line of No. 2, pixels corresponding to the end pixels for the number of width dots of document # 1 are referred to as the last pixels.

Incidentally, in this specification, the recording medium 2
The reference numeral 6 may be any device capable of recording a computer program, such as a readable semiconductor storage device, a recording medium of a magnetic storage device, and a recording medium of a magneto-optical storage device. Specifically, it includes a semiconductor ROM, a floppy disk, a hard disk, an optical disk, a magneto-optical disk, a phase change disk, a magnetic tape, and the like.

The following technical ideas can be extracted from the above embodiments. (1) When communicating image data having a main scanning width different from a predetermined fixed size via a two-dimensional code,
3. The communication terminal device according to claim 1, wherein a head line of the image data is encoded or decoded as a modified Huffman code, and control is performed so as to encode or decode the next line or less as a modified read code.

(2) The control means encodes or decodes a head line of each block as a modified Huffman code when communicating image data composed of a plurality of blocks having different main scanning widths via a two-dimensional code. And controlling so as to encode or decode the following line as a modified read code.
A communication terminal device according to claim 1.

In such a configuration, even if the main scanning width of a block having image data is smaller than the designated main scanning width, an extra white dot is not added to the insufficient portion of the main scanning width. The image data can be communicated as it is. Therefore, it is possible to reduce the data capacity and the consumption of the image memory during communication.

Further, each block of the encoded image data can be easily distinguished, and the control of the decoding process becomes easy. Furthermore, there is no need to compare the main scanning width between the preceding and following blocks, and the load on the control means when encoding and decoding image data can be reduced. In addition, even if the other terminal is a communication terminal device in which the ECN procedure cannot be set, it can be easily handled.

(3) When transmitting image data to a communication terminal device that does not have a function of decoding image data that has been two-dimensionally encoded based on the numerical information about the main scanning width, In the case where image data including a line having a larger main scanning width is two-dimensionally encoded, control is performed such that white dots are added to a deficient portion of a line having a smaller main scanning width. Item (2). The communication terminal device according to any one of items (2).

With this configuration, it is possible to transmit image data of a main scanning width other than the standard size created by a computer, for example, to a communication terminal device having no free width setting function.

[0091]

As described in detail above, the present invention has the following excellent effects. According to the first aspect of the present invention, image data can be communicated by setting the main scanning width of image data to any size other than the standard size. Therefore, it is possible to easily cope with image data of a main scanning width other than the standard size created by a computer, for example.

According to the invention described in claim 2, according to claim 1
In addition to the effects of the invention described in above, for example, even in the case of image data in which a plurality of blocks having different main scanning widths and different numbers of sub-scanning lines exist on one page, the ends of the lines are aligned. The communication can be provided as it is without any change.

According to the invention set forth in claim 3, according to claim 1
Alternatively, in addition to the effect of the invention described in 2, the encoding and decoding of image data can be performed without adding white dots to the insufficiency in order to align the end of each line. Therefore, it is possible to suppress the consumption of the image memory and the increase in the data capacity at the time of communication. Further, at the time of encoding and decoding of image data, the load on the control means can be reduced, and the processing can be performed quickly.

According to the invention set forth in claim 4, according to claim 1,
In addition to the effects of the invention described in any one of (1) to (3), the computer can cause the computer to operate the communication terminal device that can freely specify the main scanning width of the image data and perform communication.

[Brief description of the drawings]

FIG. 1 is a block diagram of a circuit configuration of a facsimile apparatus according to a first embodiment.

FIG. 2 is an explanatory diagram relating to table data for storing numerical information of each document.

FIG. 3 (a) is a diagram showing a state in which the apparatus can be set with a free width.
FIG. 3B is an explanatory diagram relating to encoding and decoding processing of image data in communication with the device whose free width cannot be set.

FIG. 4 is an explanatory diagram relating to numerical information of each document specified in the predetermined procedure signal.

FIG. 5 is a flowchart relating to a transmission operation of the facsimile apparatus of FIG. 1;

FIG. 6 is a flowchart relating to a free width transmission process of FIG. 5;

FIG. 7 is a flowchart relating to a fixed width transmission process of FIG. 5;

FIG. 8 is a flowchart relating to a receiving operation of the facsimile apparatus of FIG. 1;

FIG. 9 is a flowchart relating to a free width receiving process of FIG. 8;

FIG. 10 is a flowchart relating to the fixed-width reception processing of FIG. 8;

FIG. 11 is an exemplary block diagram of a circuit configuration of a computer according to a second embodiment;

FIG. 12 is an explanatory diagram relating to numerical information of each document specified in the predetermined procedure signal.

FIG. 13 is an explanatory diagram relating to encoding and decoding processing of image data in communication with the device capable of setting a free width.

FIG. 14 is a flowchart regarding the transmission operation of the computer in FIG. 11;

FIG. 15 is a flowchart regarding a receiving operation of the computer of FIG. 11;

[Explanation of symbols]

21 CPU constituting control means, 22 ROM constituting control means, 23 RAM constituting control means, 26
…recoding media.

Claims (4)

[Claims] In a communication terminal device which performs facsimile communication by designating a main scanning width by a communication procedure signal, communication is performed in a state where numerical information on the main scanning width is designated by a predetermined procedure signal. A communication terminal device provided with control means for controlling to decode received image data based on the numerical information. 2. The control means communicates in a state where numerical information relating to the number of sub-scanning lines is designated by a predetermined procedure signal, and decodes received image data based on the numerical information relating to the number of sub-scanning lines. The communication terminal device according to claim 1, wherein the communication terminal device controls the communication terminal device to perform the communication. 3. When communicating image data composed of a plurality of blocks having different main scanning widths through a two-dimensional code, the control means performs two-dimensional encoding or coding on a line having a main scanning width larger than a previous line. The communication terminal device according to claim 1, wherein, when decoding, control is performed such that an insufficient portion of the previous line is referred to as a white dot. 4. The computer according to claim 1, wherein
A recording medium on which a program for executing the operation of the communication terminal device according to any one of the claims is recorded.