JP2952983B2 - Facsimile communication method - Google Patents

Description

Description: BACKGROUND OF THE INVENTION The present invention relates to a facsimile communication system. More specifically, the present invention relates to a facsimile capable of compressing code data such as arbitrary character data and transmitting the same as image data. It relates to a communication system.

(Prior art) Conventionally, code data such as telephone numbers and caller names are CC
Only 20 characters could be sent according to the ITT standard.

(Problems to be solved by the invention) However, the source name, source address, telephone number,
There is a request to send information such as a fax number, the company name of the other party, the name of the other party, and various other comments, such as {urgently, please return and call}. In such a case, there is a problem that the sender has to write the above information on a cover or the like and read and send it as image information together with the document.

According to the present invention, the error correction code is added to the code data, the data length is adjusted so that the image data can be sent in the same form as the image data sent by a normal facsimile apparatus, and the data is added to the image data and sent. An object of the present invention is to provide a facsimile communication method that solves the problem.

(Means for Solving the Problems) A facsimile communication method according to the present invention is a facsimile communication method in a facsimile apparatus including a compression / expansion means for compressing / expanding information and an error detection / correction means capable of detecting and correcting an error during communication. The character code data constituting the message is compressed in the same manner as the image data, and the compressed data is added to the compressed image data and transmitted.

Also, an error correction code for error detection and correction is attached to each character code data constituting the message,
The character code data with the error correction code is compressed in the same manner as the image data, the compressed data is added to the compressed image data and transmitted, and the character code data with the reception compression error correction code is the same as the reception compression image data. It is also possible to decompress the character code data and decode the decompressed character code data.

(Operation) In the facsimile communication system of the present invention configured as described above, the character code data of each character constituting the message information is compressed in the same manner as the image data, and the compressed character code data is added to the compressed image data. Sent. Therefore, by inputting the character code data of each character constituting the message information, the trouble of handwriting the message information can be omitted, the data amount can be reduced as compared with sending the image information, the communication time is short, and the communication line usage fee is low. Can be cheaper.

Attach an error correction code to each character code data constituting the message, compress and decompress the character code data with the error correction code in the same manner as the image data,
The same operation is performed when the compressed data is added to the compressed image data and transmitted, the character code data with the received compression error correction code is decompressed, and the decompressed character code data is decoded. , An error correction code is added to the character code data, which is decoded when received, an error is detected in response to the error correction code, and the detected error bit is corrected.

(Examples) Hereinafter, the present invention will be described with reference to examples.

FIG. 1 is a block diagram showing a configuration of an embodiment to which the method of the present invention is applied.

Reference numeral 10 denotes a facsimile apparatus main body. The facsimile apparatus body 10 includes, for example, a control unit 11 including a microcomputer, a facsimile modem 12, an image reading unit 13,
An operation keyboard 14, a document presence / absence detector 15 for detecting the presence / absence of a document inserted into the image reading unit 13, and a printer 16 are provided for transmitting and receiving image signals.

A facsimile modem (hereinafter simply referred to as a modem) 12 demodulates a signal received from a telephone line and modulates a transmission signal. The image reading unit 13 reads a document image, sends an image signal to the control unit 11, and the document image output from the control unit 11 is modulated by the modem 12 and output.

The operation keyboard 14 has a numeric keypad 14 for dialing and the like.
1. A start key 142 for instructing transmission start, a one-touch key 143 for one-touch dialing, and a cover page creation instruction key 144 for automatically creating and adding a cover page are provided. Note that, in practice, the operation keyboard 14 is provided with alphabet instruction keys, function keys, and the like to reduce the number of keys on the operation keyboard 14. To 144 are provided independently.

The printer 16 is, for example, a printer including a thermal printer.

The control unit 11 controls transmission and reception in accordance with a predetermined transmission procedure and reception procedure according to the CCITT recommendation, a controller 111 that performs control to perform transmission, compression of transmission data, and a compression and decompression unit 115 that decompresses received data, An RA which stores the transmitted image information which is read by the image reading unit 13 at the time of transmission and is binarized, and which stores the expanded received image information
M112 and a cyclic code encoder 113 for adding an error correction code for error detection and correction to character data forming a cover page described later, and decoding of expanded character data with an error correction code for error detection And a decoder 114 for performing correction.

At the time of transmission, the image information stored in the RAM 112 is read out, and the data is compressed by the compression unit of the compression / decompression unit 115.
The compressed transmission data is modulated by the modem 12 and transmitted. At the time of reception, the received image information is demodulated by the modem 12, the data is decompressed in the decompression unit of the compression / decompression unit 115, the decompressed reception data is stored in the RAM 112, and the stored data is sequentially read and supplied to the printer 16. Record. These are the same as in a normal facsimile machine.

Further, a cyclic code encoder 113 for adding an error correction code for error detection and correction to character data forming a cover page to be described later and decoding of expanded character data with an error correction code to detect and correct errors Is provided.

On the other hand, reference numeral 20 denotes a cover page information creating device. The cover page information creation device 20 includes a central processing unit (CPU) 21,
Character generator 22, a program for creating cover page information, title text of cover page (for example,
ROM 23 storing character selection data for COVER PAGE, character selection data for a plurality of comment contents (eg, URGENT, etc.), and character selection data for selecting an invariant character of a cover page, for example, a character with a dashed line or a solid underline. Character selection data for the name of the communication destination corresponding to each one-touch dial, character selection data for the telephone number (FAX) of the communication destination, character selection data for the name of the transmission source, and telephone number of the transmission source (FAX) An EEPROM 24 in which character selection data for is stored.

Here, the reason why the EFPROM 24 is used is that the user of the facsimile apparatus can store and change the one-touch dialing at the time of registration or the like.

Also, the name of the recipient can be input using the alphabet instruction key and used as data in the cover page.

The cover page information creating device 20 further includes a RAM 25 for storing character selection data and other data for a dial (FAX) other than one-touch, a ROM 23,
There is provided a RAM 26 in which character data stored in the EFPROM 24 and the RAM 25 is stored at an address corresponding to a position on the cover page.

The CPU 21 receives the information from the control unit 11, and converts the predetermined character selection data stored in the EEPROM 24, the ROM 23 and the RAM 23 into R according to the program stored in the ROM 23.
An error correction code for error detection and correction is added to the selection data stored in the AM 26 and stored in the RAM 26 by the encoder 113, and the character selection data to which the error correction code is added is sent to the RAM 112 as N-line image data. Store and RA
The data stored in the M112 is read, and compressed and transmitted by the compression unit of the compression / decompression unit 115 in the same manner as the image data and transmitted.

The operation of the embodiment of the present invention configured as described above will be described with reference to the flowchart of FIG.

In order to perform transmission by the facsimile machine 10, for example, when dialing by pressing the one-touch key 143 is made, the information dialed is temporarily stored in the dialed information area of RAM 25 (Step S _1). Wait for the start key 142 is pressed following the step S ₁ (step
S _2). When the start key 142 is pressed, whether a cover page generation instruction key 144 is pressed is checked (step S _3). When the cover page generation instruction key 144 is judged not to be pressed at the step S _3, that is, when the cover page creation is not instructed, read the conventional case as well as the original image, the image data read transmission is performed (step S _10).

When the cover page generation instruction key 144 is judged to have been pressed in step S _3, that is, when the cover page creation is instructed, for destination names registered for one-touch keys 143 dialed Character selection data, phone number (FAX) of the other party
, Character selection data for the name of the caller, and character selection data for the telephone number (FAX) of the caller are read from the EEPROM 24 and stored at predetermined addresses of the RAM 26 and stored in the ROM 23, respectively. character selection data for the title text of the cover page, character selection data for the contents of the comment, and invariant character selection data in the cover page is read out and stored in a predetermined address of the RAM 26 (step S _4).

Then indicated destination telephone number (FAX) is dialed in step S ₁ (step S _5).

Following step S _5, it is sequentially read out each of the character selection data stored in the RAM 26, the encoder 11
Is stored in the transmission character information is added RAM112 with an error correction code is added at 3 (step S _6).
Character selection data and transmission number information stored in the RAM112 is read out, the data length by methods such as zero-filled so that the N lines of image data are combined (step S _7). Subsequently compressed like regular image data in the compression section of the compression and decompression unit 115 (Step S _8), with the information that is added N lines in a non-standard function setting signal (NSS), after modulation It is transmitted by being added to the preceding image data (step S _9). Here, if there is a means for correcting an error in image data such as ECC, it is not necessary to add an error correction code.

Following step S ₉ document image is read, made the transmission of the read image data, (step S _10), the line to the transmission of the image data transmission of all original images is loaded facsimile apparatus is completed (Step
S _11).

On the called side that has received the above transmission, the received data is demodulated, and the NSS recognizes that character data is included in the data of the N line. With this recognition, N lines are extracted from the received data. The N lines extracted here are data corresponding to the character selection data.

The extracted data is decompressed by the decompression unit of the compression / decompression unit 115 in the same manner as the decompression of the image data.
The data is supplied to the decoder 114, decoded, and subjected to error correction. Here, when the error cannot be corrected, the same processing as the normal communication error is performed. A character corresponding to the selected data is read from the character generator 22 in accordance with the decoded character selection data, developed into image information in the RAM 112, and recorded by the printer 16.
An example of this recording is as shown in FIG.

Further, the subsequently transmitted image data is also demodulated, decompressed and recorded by the printer 16.

(Effects of the Invention) As described above, according to the present invention, each character code data constituting a message is compressed in the same manner as image data, and the compressed data is added to the compressed image data and transmitted. An error correction code for error detection and correction is attached to each character code data constituting the message, the character code data with the error correction code is compressed in the same manner as the image data, and the compressed data is compressed. Since the character code data with the received compressed error correction code is expanded by the same method as the received compressed image data, and the expanded character code data is decoded, the sender's address and telephone number are added. Information such as fax, fax number, destination company name, destination name, and other comments The data amount is small, and transmission can be performed more easily with a small amount of information. In addition, the communication time can be shortened, and the communication line usage fee can be reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment to which the method of the present invention is applied. FIG. 2 is a flowchart for explaining the operation of one embodiment of the present invention. FIG. 3 is a schematic diagram showing a cover page printed by a facsimile apparatus that has received cover page information transmitted according to an embodiment of the present invention. 10 facsimile machine body, 11 control unit, 14 operation keyboard, 20 cover page information creation device, 22
... Character generator, 113 ... Encoder, 114 ... Decoder, 115 ... Compression / decompression unit, 141 ... Numeric keypad, 142 ...
… Start key, 143 …… One touch key, 144 …… Cover page creation instruction key.

Claims (2)

(57) [Claims] 1. A facsimile communication system in a facsimile apparatus comprising a compression / expansion means for compressing / expanding information and an error detection / correction means capable of detecting or correcting an error during communication, wherein each character code data constituting a message is transmitted. A facsimile communication method characterized by compressing in the same manner as image data, adding the compressed data to compressed image data, and transmitting the compressed image data. 2. A facsimile communication system in a facsimile apparatus having a compression / expansion means for compressing / expanding information, wherein each character code data constituting a message is provided with an error correction code for error detection and correction. The character code data with the correction code is compressed in the same method as the image data, the compressed data is added to the compressed image data and transmitted, and the character code data with the reception compression error correction code is transmitted in the same method as the reception compression image data. A facsimile communication method characterized in that the character code data is decompressed and decoded.