KR940008795B1 - Fax control method of image data scan for computer fax system - Google Patents

Abstract

The method for delivering the scanned data of the facsimile to the computer directly without additional modem or peripheral devices comprises the steps of: a) checking the manuscript setting after receiving the scanning request signal from the PC; b) storing the scanned image of the line buffer, which is coded to the facsimile format, into a FIFO buffer; c) checking the page end and continuing the above processes if the next manuscript is present , otherwise providing the file end signal to the PC; and e) stopping after receiving the file end signal.

Description

Facsimile Control Method for Scanning Image Data in Computer-Facsimile Access System

1 is a schematic block diagram of one embodiment of a computer-facsimile connection system to which the present invention is applied.

2 is a flowchart of a main program execution of the present invention.

(A), (b), and (c) of FIG. 3 are flowcharts for performing an interrupt routine in the present invention.

* Explanation of symbols for main parts of the drawings

10: facsimile device 11: facsimile control unit

12: image scanning unit 13: modem and network control unit

14: serial connection 15: image recording unit

16: RS232C connection 20: Computer

21: computer main control part 22: main memory part

23: hard disk 24: keyboard

25 monitor 26 RS232C connection

30: phone

The present invention relates to a facsimile control method for scanning image data in a computer-facsimile connection system in which a facsimile is connected to a computer and the facsimile is used as an image data scanning device.

In the conventional case, an expensive image scanner was attached to a computer (hereinafter simply referred to as a PC) to perform image data input processing. In this case, a separate recording device which is expensive to read data read from the image scanner There was a problem that can not be output without.

In addition, a conventional computer-facsimile system (hereinafter, simply referred to as PC-FAX) includes a modem for facsimile communication and a peripheral circuit thereof, and performs image scanning on an external separate facsimile device and then transmits image data through a communication modem. Receiving and performing an image scanning function required a very cumbersome process.

In the case of scanning image data using a separate image scanner in a conventional PC-FAX, the data can be stored in a PC memory or transferred to an external counterpart fax only after converting the data into a facsimile format using a separate utility. It was.

The present invention has been devised to eliminate such problems, so that the PC-FAX can provide the scanned data directly to the PC side in facsimile format without a separate modem and peripheral circuit while FAX performs the original transmission and reception function. It is an object of the present invention to provide a facsimile-side control method for scanning image data in a computer-facsimile connection system.

The present invention provides a modem and network control means connected to a public communication network for transmitting and receiving images with an external facsimile, an image scanning means for reading an image of a set original, and the modem and network control means and an image. A facsimile control means connected to the scanning means for controlling input and output of image data, a facsimile device connected to the facsimile control means and having a serial connection means for connecting to a computer and a first RS232C connection means, and an external device. Connected to the second RS232C connecting means for connection, main memory means composed of ROM and RAM, a hard disk, a keyboard and monitor as input / output devices, and the second RS232C connecting means hard disk keyboard monitor and main memory means. In a system connected to a computer equipped with a computer main control means for performing control A method of controlling a facsimile side for scanning image data of a first data, the method comprising: when a facsimile detects a scan request signal from a PC while executing a program, determining whether to set a document to be scanned and transmitting a scan ready signal to the PC side; step ; A second step of receiving a scan mode from a PC within a predetermined time period and transmitting a mode recognition signal to the PC side; A third step of repeating the operation of coding the scanned one-line image in facsimile format and storing it in the FIFO when the scan operation is completed one line by a predetermined time; A fourth step of transmitting a page end signal to the PC side when the original of the next page to be scanned is set, receiving a page end recognition signal from the PC side within a predetermined time, and then repeating from the second step; And a fifth step of receiving a file end recognition signal from the PC side within a predetermined time and ending the execution after transmitting the file end signal to the PC side if the original of the next page to be scanned is not set after performing the third step. It is characterized by being carried out.

Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.

1 is a block diagram of a hardware configuration of a computer-facsimile connection system to which the present invention is applied. In FIG. 10, a facsimile apparatus, 11 a facsimile control unit, 12 an image scanning unit, 13 a modem and a network control unit, 14 is a serial connection, 15 is an image recording unit, 16 is an RS232C connection, 20 is a computer (PC), 21 is a computer main controller, 22 is main memory, 23 is a hard disk, 24 is a keyboard, 25 is a monitor, and 26 is RS232C connection, 30 represents the phone respectively.

As shown in the figure, a PC-FAX system to which the present invention is applied is connected to a public communication network for transmission and reception of an external facsimile, and a modem and a network having a relay for selecting and switching facsimile mode and telephone mode therein. A control unit 13, an image scanning unit 12 for reading an image of a set original, a facsimile control unit 11 connected to the modem, network control unit and image scanning unit to control input and output of image data, and It is configured to connect the facsimile apparatus 10 which is connected to the facsimile control part and which has a serial connection part 14 and RS232C connection part 16 which connects a facsimile with a PC to the PC 20 which is already widely used. The PC is connected to an external device with an RS232C connection section 26, a main memory section 22 composed of ROM and RAM, a hard disk 23 as auxiliary memory, and an input / output device. And a computer main controller 21 which is connected to the RS232C connection unit, the hard disk, the keyboard, the monitor, and the main memory unit to perform overall control. (Registered trademark) It is preferable to configure a PC of a compatible model.

2 is a flowchart of a main program execution of the present invention applied and executed in the system as shown in FIG.

When the PC 20 sends a scan request signal while the facsimile 10 is waiting for program execution 41, the facsimile detects this (42) and searches whether the document to be scanned is set (43). If the original is not set, send abbot signal and scan error processing (44), if the original is set, send the scan ready signal to the PC side (45), and the timer time (time) before accepting the scan mode. Set 1) (46).

Then, it is determined whether or not an abort signal from the PC side and a scan mode are received during the set time of the timer (47, 48, 49). If no signal is detected within the time 1, the abort signal is transmitted. (44) Returning to the facsimile standby program, if an abort signal is received from the PC side, the process immediately returns to the initial standby program performing step 41, and if the scan mode is received, transmits a mode recognition signal to the PC side (50), After setting the scan flag (51), a new time (time 2) of the timer is set (52).

Then, the one-line scan completion signal and the scan flag ON state are detected during the set time 2 (53, 54, 55). If the one-line scan completion signal is detected (54), the image of the scanned line buffer is scanned. Coding the data into facsimile format data and storing the coded data in a FIFO (First-In First-Out) buffer (56). When coding of the scanned image is completed in this way (57), after the scan completion flag is cleared (58), the following line processing is repeated from the time 2 set process 52 described above. However, if the scan flag is turned OFF or no signal is detected within the above time 2, it is determined whether the original of the next page to be scanned is set (59), and if it is set, the end-of-page signal is sent to the PC. (60) A new time (time 3) of the timer is set (61). Then, it is determined whether a page end recognition signal has been received from the PC for the set time (time 3) (62, 63). If it is not received within the time 3, the abbot signal is transmitted to the PC (68). When the page end recognition signal sent from the PC side is received, the next page original is repeatedly scanned from the time 1 set process 46. However, if the original of the next page to be scanned is not set (59), the file end signal is transmitted to the PC side (64), and then a new time (time 4) of the timer is set (65). Then, it is determined whether a page end signal has been received from the PC for the set time (time 4) (66, 67). If it is not received within the time 4, the abbot signal is transmitted to the PC (68). If the end-of-page signal sent from the PC side is received within the time, the execution ends.

(A), (b), and (c) of FIG. 3 are flowcharts for performing an interrupt routine in the present invention, (a) is an interrupt routine (SYS? INT) for starting a scan, and (b) shows an actual scan operation. An interrupt routine (DMA_INT) to execute. (C) is an interrupt routine (INTTX) that transfers the contents of the FIFO buffer to the PC.

First, look at the execution of the scan start interrupt routine (SYS＿INT).

It is determined whether the scan flag and the scan complete flag are set (71, 72). If only the scan flag is set and the scan complete flag is not set, the scan start bit is set (73), and the scan execution interrupt routine (DMA INT) Enable (74) to perform the actual scan operation, and then determine if the scan operation of one page has been completed (75) and if it is completed, clear the set scan flag (76) and return.

Looking at the execution of the scan execution interrupt routine (DMA_INT), after scanning one byte of image data (81), it is determined whether or not the scan is completed (82). Thus, after the scan is completed, the scan start bit is cleared (83), the scan completion flag is set (84), and the scan execution interrupt (DMA_INT) is disabled (85). However, if the scan is not completed (82), the scanned data is stored in the line buffer (86) and returned.

The buffer contents transfer interrupt routine INTTX transfers the contents of the FIFO buffer stored in the main program execution process 56 to the PC side (91).

Accordingly, the present invention as described above, in the computer-facsimile system, by encoding the fax directly scanned image in the fax format without a separate circuit or utility to the PC side, by implementing a scan function of the PC-FAX hardware configuration And the effect of making it possible to quickly and easily perform image data transmission and reception with an external facsimile.

Claims (4)

A modem and network control means 13 connected to a public communication network for image transmission and reception with an external facsimile, image scanning means 12 for reading an image of a set original, and the modem and network control means and image scanning means. A facsimile control means (11) connected to control input and output of image data, a serial connection means (14) and a first RS232C connection means (16) connected to said facsimile control means and connected to a computer (PC); A facsimile device 10, a second RS232C connecting means 26 for connecting to an external device, a main memory means 22 composed of ROM and RAM, a hard disk 23, a keyboard as an input / output device ( 24) and a monitor 25 and a computer 20 having computer main control means 21 connected to the second RS232C connecting means hard disk keyboard monitor and main memory means for performing overall control. In the facsimile control method for scanning image data, when the scan request signal from the PC 20 is detected during the program execution of the facsimile, it is determined whether or not the original to be scanned is set and a scan ready signal is sent to the PC side. First step of transmitting; A second step of receiving a scan mode from a PC within a predetermined time period and transmitting a mode recognition signal to the PC side; A third step of repeating the operation of coding the scanned line buffer image in a facsimile format and storing it in the FIFO buffer when the scan operation is completed one line within a predetermined time; A fourth step of transmitting a page end signal to the PC side when the original of the next page to be scanned is set, receiving a page end recognition signal from the PC side within a predetermined time, and then repeating from the second step; And a fifth step of receiving a file end recognition signal from the PC side within a predetermined time and ending the execution after transmitting the file end signal to the PC side if the original of the next page to be scanned is not set after performing the third step. And a facsimile-side control method for scanning image data in a computer-facsimile connection system. The method of claim 1, wherein the interrupt routine (SYS_INT) for starting a scan operation in the third step comprises: determining whether to set a scan flag and a scan complete flag; A seventh step of setting a scan start bit and enabling a scan execution interrupt (DMA_INT) when only the scan flag is set; And an eighth step of determining whether or not the one-page scan is completed and clearing the set scan flag and resetting it. The facsimile-side control method for image data scanning in a computer-facsimile connection system is performed. 3. The method of claim 2, wherein the scan performing interrupt (DMA_INT) enabled in the seventh step comprises: a nineth step of scanning an image of one byte; A tenth step of determining whether the scan is completed after performing the ninth step; And if the scan is completed, save the scanned data to the line buffer, if not, clear the scan start bit, set the scan complete flag, and disable the scan execution interrupt being performed. A facsimile-side control method for scanning image data in a computer-facsimile connection system. The computer program according to claim 3, further comprising a buffer content transfer interrupt routine (INTTX) performed by the twelfth step of transferring the data of the FIFO line buffer stored in the third step to the PC side. A facsimile control method for scanning image data in a facsimile connection system.