JPS58154953A - Facsimile code converting system - Google Patents

Abstract

PURPOSE:To attain the communication from a data terminal to a facsimile terminal, by converting flexibly character information transmitted from the data terminal into facsimile information possible for the transmission to the facsimile terminal. CONSTITUTION:A facsimile code converting section FG adopts the microprogram system for high speed processing, allowing to process a lot of processings such as conversion from character information DI into facsimile information FI with a simple logic in high speed. Further, a conversion control section CN uses a microprocessor, which shares functions being sophisticated comparatively but less amount of processing and being subject to the effect due to external conditions, multiplex processing function for the preparation of the next processing during the execution of the section FG and addition of service items through the rewrite of programs incorporated in a storage section CN2, allowing to increase the processing ability and the flexibility of the functions.

Description

DETAILED DESCRIPTION OF THE INVENTION +81 Technical Field of the Invention The present invention relates to a facsimile code conversion system, and particularly to a facsimile code conversion system in a communication system connecting a data terminal and a facsimile terminal.

(bl Conventional technology and problems Functions and protocols of data terminals used for data communication (transmission speed, transmission control procedure, character codes used,
There are many different types of facsimile terminals used for facsimile communication (paper type, density, facsimile encoding method, transmission control procedure, etc.). do.

In conventional data communication systems or facsimile communication systems, communication was only possible between terminals of the same model and using the same protocol. However, in the future, it is assumed that communication will be required not only between arbitrary data terminals and facsimile terminals, but also between data terminals and facsimile terminals, or between facsimile terminals and combiators. In such a case, for example, it may be considered to convert character information sent from a digital terminal into facsimile information using a general-purpose information processing device and send it to a facsimile terminal, but general-purpose information processing devices often do not perform this type of conversion. This method is uneconomical as it requires a processing time of

(C1 Purpose of the Invention The purpose of the present invention is to eliminate the drawbacks of the conventional data communication system and facsimile communication system as described above, and to flexibly convert character information transmitted from a data terminal into facsimile information that can be transmitted to a facsimile terminal. By doing so, it is possible to communicate from a data terminal to a facsimile terminal.

+d) Structure of the Invention The purpose of this invention is to transfer character information and facsimile information to and from a main storage device in a communication system that connects a data terminal and a facsimile terminal based on a command sent from a central processing unit of the communication system. a transfer control unit to
a conversion control unit that stores the character information and facsimile information transferred by the transfer control unit and controls conversion of the character information into facsimile information; and a conversion control unit that stores a predetermined amount of character information under the control of the conversion control unit. Device (a) Comprised of a Facsimile Code Conversion Unit for Conversion into Facsimile Information Embodiment of the Invention An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing an example of a communication system to which the present invention is applied, FIG. 2 is a diagram showing an example of the configuration of the message communication system in FIG.
FIG. 4 is a diagram showing an example of an information transfer process between the central processing unit and the media conversion device in FIGS. 2 and 3; 5 is a diagram showing an example of conversion control information in FIG. 4, FIG. 6 is a diagram showing an example of character information in FIG. 4, and FIG. 7 is a diagram showing an example of original image information. , FIG. 8 is a diagram showing an example of the facsimile information in FIG. 4. Note that the same reference numerals indicate the same objects throughout the figures. In FIG. 1, the network NW accommodates a data terminal DT and a facsimile terminal FT, and is also equipped with a message communication system MCS. The message communication system MCS has a configuration as shown in FIG. 2, and has a plurality of data terminals D accommodated in the network NW.
The character information DI transmitted from T is converted into facsimile information FT.
It has a function of converting the data into a fax number and then transmitting it to a plurality of facsimile terminals FT. Data terminal DT is facsimile terminal F
When transmitting information to T, network NW
The message communication system MCS is connected to the message communication system MCS via the Message Communication System MCS, and the character information DI to be transmitted is sent to the message communication system MCS along with the necessary transmission control information. The message communication system MCS, under the control of the line control unit ILCT,
The character information DI and the transmission control information sent from the data terminal DT are sequentially stored on the memory MEM. Note that if there is a large amount of character information DI, or if conversion to facsimile information FI is not performed immediately, the character information DI is further stored on the disk DK. Data terminal D
When all the character information DI transmitted from T is stored, the central processing unit CC performs conversion control to convert the character information DI into facsimile information Fl based on instructions from the data terminal DT or attributes of the facsimile terminal FT. Create information PR. As shown in FIG. 5, the conversion control information PR includes paper size Ds, lJIA density LD, and character size CS1.
Facsimile encoding method 2 KP.

It includes character space CSP, line space LSP, cue space line number LSPN, and line start space SSPN. After creating the conversion control information PR, the central processing unit cc sends the media conversion device McE via the channel DCH.
sends a set parameter command SPc and conversion control information PR to (Figure 4), and sends a set parameter command SPc and conversion control information PR from the media conversion device MCE to
When a completion report IR indicating the completion of reception is returned, the central processing unit CC sends a write command WRC and character information DI to the media conversion device MCE. Note that the media conversion device MCE converts the character information DI for one page into a predetermined amount (for example, 1
line) and converts it into facsimile information FI. Further, the last line of the page is notified by sending a write command WRC with one specific bit (modified bit) changed to a logical value 1. Also, the central processing unit cc
After sending the write command WRC, sends a follow-up command RDC to the media conversion device MCH in order to extract the converted facsimile information Fl. The media conversion device MCE that received the continuous command RDC converts the received character information D.
When the facsimile information 11FI converted from I reaches a predetermined amount (for example, 1 kilobyte), it is sequentially stored in the memory MEM via the channel DC), and the character information D for one page is stored sequentially in the memory MEM.
When the conversion of I is completed, the central processing unit WCC is notified to that effect. The central processing unit cC that received the notification stores the memory ME.
Send the facsimile information FI stored in M to the facsimile terminal FT. As shown in FIG. 3, the media converting device MCE is composed of a transfer control section 1F, a conversion control section CN, and a facsimile code conversion section FC. The transfer control unit IF controls the interface between the input/output coupling unit IF1 that controls transmission and reception with the channel DCH, sequence control of transmission and reception with the channel DCH, analysis of commands sent from the central processing unit CC, and conversion control unit CN. a common control unit IF2 to perform the control operations, and a storage unit IF having microprograms and buffers necessary for the control operations of the common control unit IF2.
3, and a bus control unit IF4 that matches the interface between the bus of the conversion control unit CN and the common control unit IF2. Transfer. The conversion control unit CN is a common control unit CNI that operates according to the programs built in the storage units CN2 and CN3.
and the program/character information DI/facsimile information F
The transfer control unit IF is composed of a storage unit CN2 that stores conversion control information PR, etc., and a storage unit CN3 that stores basic programs and data such as initial settings of the common control unit CNI and initial loading of programs. Character information DI and facsimile information F transferred by
1, and controls the conversion operation from character information DI to facsimile information Fl performed by the facsimile code conversion unit FC. The facsimile code conversion unit FG is a conversion control unit C.
A bus control section FG1 that matches the interface between the N bus and the common control section FG2, a storage section FG3 that temporarily stores the microprogram/character information DI and facsimile information FI necessary for the common control section FG2, and a storage section FG3 that temporarily stores the necessary microprogram/character information DI and facsimile information FI; D
a storage unit FG5 that stores a character pattern corresponding to I;
a storage unit FG4 that stores a facsimile code based on a predetermined facsimile encoding method corresponding to the original picture information FPI;
Interface control and character information D with the common control unit CNI according to the microprogram built in the storage unit FG3
Common control unit FG2 that generates original picture information FP'l from I, converts original picture information FPI to facsimile information Fl, etc.
Under the control of the conversion control unit CN, the character information DI is converted into a predetermined amount (for example, one line) of addressed facsimile information Fl. As described above, the sent parameter command SPC transmitted from the central processing unit OC via the channel DCH is analyzed by the common control section IF2 of the transfer control section IF, and the conversion control information PR is temporarily stored in the storage section IF3. The common control unit IF2 stores the conversion control information PR in the storage unit CN2 of the conversion control unit CN via the bus control unit IF4.
After storing it in a specific address of CN, the common control unit CN
-1 will be notified accordingly. After the common control unit CNI saves the conversion control information PR to another address, the common control unit CNI
Sends a transfer completion signal to F. The transfer control unit IF that has received the transfer completion signal sends a completion report IR to the channel DCH.

As a result, the write command WRC sent by channel DCH
The transfer control unit IF that has received the character information DI from the channel DCH sequentially stores the character information DI from the specified address on the storage unit CH2. At this time, the transfer control unit IF transfers the common control unit C
Nl checks whether the buffer has been secured on the storage unit CN2, and if it has been secured, the character information DI on the storage unit IFa is
is transferred to the buffer. When the buffer becomes full, the common control unit CNI is notified of this fact. The common control unit CNI analyzes the character information DI stored in the storage unit CN2 for one byte and gives an instruction to convert the character information DI to facsimile information FI to the facsimile code conversion unit FG in one step.

Note that the conversion control information PR is stored at a specific address on the storage unit CN2.
Set. At the start of the page, the common control section C
The NI refers to the conversion control information PR stored in the storage unit CN2, sets the conversion instruction information together with the cue space creation instruction and the cue space line number LSPN, and transmits it to the facsimile code conversion unit FC. The conversion instruction information transmitted to the facsimile code conversion unit FC includes the conversion control information PR, instruction information for creating a cue space or end-of-page space, the number of converted characters per line, and conversion target character information DI. and facsimile information F after conversion
Address information on the storage unit CH2 that stores I is further added. The facsimile code conversion unit FG converts the cue space into facsimile information Fl, and then the storage unit FG
3, and the buffer is occupied by facsimile information Fl, or one line or one
When the conversion process for one page is completed, it is transferred to the storage unit CN2 under the control of the common control unit FG2, and when the conversion process is completed, a completion notification is sent to the common control unit CNI. The common control unit CNI that received the notification of completion updates one new line of character information D.
The conversion instruction of I is transmitted to the facsimile code conversion unit FG together with the conversion instruction information. Assuming that one line to be converted is a character string AB..., the character information DI transmitted from the conversion control unit CN to the facsimile code conversion iFG is illustrated in FIG. In addition, Figure 6 shows each character of the above character string as JI.
This is an example expressed using 2 bytes in accordance with SC6226. The facsimile code conversion unit FG is a conversion control unit CN.
Based on the conversion instruction information received from the character information DI, the character pattern corresponding to the character information DI is extracted from the storage unit FG5, and original image information F for one line without band pressure lines as shown in FIG.
A PI is created and stored in the storage unit FG3. In Figure 7, the line starting space is 41! element, font size 16x
This is an example in which the standard size is 16 pixels, the space between characters is 2 pixels, and the paper size is A4. Furthermore, the facsimile code conversion unit FC converts the original image information F stored in the storage unit FG3.
The PI is converted into facsimile information Fl based on the facsimile encoding method KP specified in the conversion instruction information. That is, the number of consecutive white pixels or black pixels constituting each I1 pixel string of the original picture information FPI is counted, and the facsimile code corresponding to the number of pixels is extracted from the storage unit FG4, and the facsimile code as shown in FIG. Create the information Fl and store it in the storage section FG.
Store in buffer 3. Note that FIG. 8 shows the topmost pixel column of the original picture information FPI shown in FIG. 7 as a one-dimensional MH (
This is an example of encoding using the Modified Huffman (Modified Huffman) encoding method, and EOL is the final instruction (
000000000001). Thereafter, each pixel column is converted in the same way, and a total of 200 pixels are converted, including 166 pixels shown in FIG. When the processing is completed, the facsimile code conversion unit FC transfers the facsimile information Fl in the storage unit FG3 and the storage information (the number of bytes of the facsimile information Fl in the storage method) of the facsimile information Fl buffer in the storage unit CN2 to the storage unit. The data is transferred to CN2 and a completion notification is sent to the conversion control unit CN. When the facsimile information Fl buffer allocated on the storage unit CH2 becomes full during conversion from the original image information FPJ to facsimile information Fl, the facsimile code conversion unit FG notifies the conversion control unit CN accordingly.

The conversion control unit CN detects that the buffer is occupied by the converted facsimile information F or that the processing for one page has been completed, and transfers the memory M to the transfer control unit IP.
Transfer instructions to EM.

The conversion control unit CN repeats the transfer in units of a fixed amount (for example, 1 kilobyte), and when the conversion and transfer for one page is completed, it notifies the central processing unit cc of this fact.

As is clear from the above description, according to this embodiment, the facsimile code conversion unit FG employs a microprogram method to speed up processing, and also converts character information DI to facsimile information Fl using simple logic. A microprocessor is used in the force conversion control unit CN to handle relatively sophisticated functions that require a small amount of processing, as well as functions that are easily affected by external conditions. By doing so, the facsimile code converter FC
It has a multi-processing function that prepares for the next process while the process is being executed, and it is possible to add service items by rewriting the program built into the memory unit CN2, thereby achieving both improved processing power and functional flexibility. do.

Furthermore, the conversion control unit CN interrupts the processing of the text information DI when an emergency process such as creating network failure information to be sent to the facsimile terminal FT occurs during the processing of the text information DI. The emergency process can be executed easily without having to do anything.

Note that the drawing is merely one embodiment of the present invention; for example, the configuration of the message communication system MC3 is not limited to that shown in the drawing, and the media conversion device MCE can directly communicate with the bus without going through the channel DCH. Although many other modifications may be considered, such as connecting to, the effects of the present invention remain unchanged in any case. Furthermore, the communication system to which the present invention is directed is not limited to that shown in the drawings; for example, when a facsimile terminal FT is used as an input/output device for an electronic computer or an electronic exchange, the communication system is not limited to the one shown in the figure. Numerous other variations can be considered, such as direct connection to the channel DCH or the media converter MCE, but the effects of the present invention do not change in either case.

(Kozue) According to the present invention, in the communication system, by flexibly converting character information transmitted from a data terminal into facsimile information that can be transmitted to a facsimile terminal, communication from a data terminal to a facsimile terminal is possible. It is possible to realize a facsimile code conversion system that enables this.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an example of a communication system to which the present invention is applied, FIG. 2 is a diagram showing a configuration example of the message communication system in FIG. 1, and FIG. 3 is a configuration example of the media conversion device in FIG. 2. FIG. 4 is a diagram showing an example of the information transfer process between the central processing unit and the media conversion device in FIGS. 2 and 3, and FIG. 5 is a diagram showing the conversion control information in FIG. 4. FIG. 6 is a diagram showing an example of character information in FIG. 4, FIG. 7 is a diagram showing an example of original image information, and FIG. 8 is a diagram showing an example of facsimile information in FIG. 4. be. In the figure, DT is a data terminal, FT is a facsimile terminal, NW is a network, MC3 is a message communication system, CC is a central processing unit, MEM is a memory, DCH is a channel, MCE is a media conversion device, LCT is a line control device, and DK is a disk, IF is a transfer control section, CN is a conversion control section, FG is a facsimile code conversion section, IFI is an input/output coupling section, IF2, CNI and FG2 are a common control section, IF3, CN2, CN3, FG3, FG4 and FG
5 is a storage unit, IF4 and FGI are path control units, SPC
is set parameter command, PR is conversion control information, W
RC is a write command, DI is character information, RDC is a continuous command, Fl is facsimile information, FPI is original image information,
PCI is facsimile code conversion control information, C8P is character space, LSP is line space, DS is paper size,
LD is linear density, C8 is character size, KP is facsimile encoding method, LSPN is number of cue space lines, 5S
PN indicates line start space. η Kunmi month 1 + proof 11! ] 4th cause C5P: Character spacing - SP tsp: Breakthrough space DS: Kishi IS゛ID; Condition density C5: Character 14 Number 5 SPN
: Hit 1i/l to Himata - big laugh 5 Enichi 1 Tsumugi 7 Figure 7 6 5 φ 3 2 7 0 Figure 8

Claims (1)

[Claims] In a communication system that connects a data terminal and a facsimile terminal, a transfer control unit that transfers character information and facsimile information to and from a main storage device based on a command sent from a central processing unit of the communication system; a conversion control unit that stores the character information and facsimile information transferred by the unit and controls conversion of the character information into facsimile information; and a conversion control unit that converts a predetermined amount of character information into facsimile information under the control of the conversion control unit. 1. A facsimile code conversion system comprising: a facsimile code conversion unit for converting facsimile codes;