KR19980083056A - Fax data transmission method - Google Patents

Abstract

The present invention relates to a facsimile data transmission method, and more particularly to a facsimile data transmission method that can be controlled to transmit and receive clearer image data.

This facsimile data transmission method comprises: a first step of transmitting a part of an original; Transmitting a signal for changing the resolution; A third step of monitoring whether there is a response from the receiver to the resolution change signal sent out in the second step; A fourth step of performing a resolution change operation when there is a resolution change request from the receiving side in the third step; And a fifth step of retransmitting a part of the original transmitted in the first step at the changed resolution.

Description

Fax data transmission method

1 is a block diagram showing the configuration of a general facsimile.

2 is a flowchart illustrating a data transmission method of a conventional facsimile.

3 is a method of transmitting facsimile data according to the present invention.

(A) is a flowchart showing an operation process of a transmitting side,

(B) is a flowchart showing an operation process according to the response of the receiving side.

* Explanation of symbols for main parts of drawings *

1: Memory 2: ROM

3: DTMF Modem 4: Network Control Device

5: reading unit 6: voice unit

7: central processing unit 8: key input unit

9: printer

The present invention relates to a facsimile data transmission method, and more particularly to a facsimile data transmission method that can be controlled to transmit and receive clearer image data.

A facsimile system (hereinafter referred to as a 'facsimile') refers to a device that reads a document to be transmitted as an image signal, converts it into an electrical signal, and transmits it.

When the communication line is connected between the sending and receiving facsimile, the facsimile determines the communication method necessary for the data transmission of the facsimile, such as data rate and resolution of the sending and receiving facsimile. The data transmission is made by the method.

These facsimile machines are currently available in various types depending on the function being implemented. In particular, when the size of the built-in memory is large, the memory polling function is used for the convenience of the user.

In the memory polling function, when a document is sent, the recipient's telephone number and the original are stored in the memory once, and the sending side fax continuously monitors the reception state of the receiving side fax without a user's command. When data transmission is possible, the data stored in the memory can be transmitted to the designated receiving side fax. Therefore, after the user enters the scanning and receiving phone numbers of the document, the user can automatically send the document without monitoring the fax's data transmission status, so that other tasks can be performed simultaneously while the data is being sent. do. In addition, the memory polling function may be sequentially transmitted from a place where data reception is possible by designating several receiving stations.

The following describes a method of transmitting data of a facsimile according to a conventional memory polling function.

1 is a block diagram showing the configuration of a general facsimile.

The configuration shows a central processing unit 7 that controls the entire system and has a built-in DRAM controller, and DTMF (Dual Tone) for performing modulation / demodulation operation of image data and detecting a tone input from an external input. Mult-Frequency) includes a modem 3, and a ROM 2 for programming and storing data necessary for facsimile transmission of software and data for driving the system.

And a network control unit (NCU) 4 for connecting the system to an external telephone line via the DTMF modem 3, and a dock for reading image data from a paper loaded for sending facsimile data. And a memory unit 1 for temporarily storing the data read from the reading unit 5 before performing the transmission function or temporarily storing the received data.

In addition, a key input unit 8 for inputting a key signal by a user's selection and a printer unit 9 for printing received data or data for copying on paper are included.

The following describes the data transmission method of the conventional facsimile according to the above configuration in detail.

2 is a flowchart illustrating operations of data transmission of a conventional facsimile.

First, the user mounts an original to be transmitted in a state in which the reading unit 5 can read it, and sets memory polling (step 101). This memory polling function has been described above, but when the data is to be transmitted, the document to be transmitted and the telephone number of the receiving side fax are stored in the memory, and the data receiving state of the receiving side can be determined without the user's command. Refers to a function that can automatically perform a transfer.

Therefore, before and after step 101, the receiving side fax telephone number input process is included.

After the polling function is set in step 101, the CPU 7 determines whether the document to be transmitted is mounted in the reading unit 5 (step 102). When the original is mounted, the central processing unit 7 scans the loaded original through the reading unit 5 and stores it in the memory unit 1.

If the original is not mounted in step 102, an error indicating that the original is not mounted is displayed (step 110).

When data to be transmitted to the memory unit 1 is completely stored, the central processing unit 7 arbitrarily determines a communication method for transmission of the data stored in the memory unit 1. That is, the central processing unit 7 selects and sets the data transmission resolution and the contrast (step 103).

After performing the above process, the central processing unit 7 completes the data transmission preparation according to the polling function, and checks whether the reception of the current data is possible in the receiving fax. In other words, the telephone number of the receiving side fax is dialed to check whether a ring signal is detected (step 104).

When a ring signal is detected in step 104, it is checked again in step 105 whether the detected ring signal is a ring signal detected from a receiving side during data transmission by a polling function, and when the ring signal is detected by a polling function. The original stored in the memory unit 1 is transmitted to the receiving side facsimile (step 106). The data transfer by the above step is carried out at the resolution determined in step 103, and when the burning of data stored in the memory unit 1 is completed, the system is terminated.

If the ring signal is detected in step 104, if it is not a ring signal according to a polling function, it is determined as a ring signal according to data transmission from the outside, and the CPU 7 enters a standby state for receiving data ( Step 109).

Steps 107 and 108 refer to an operation process performed by performing a general function in a general facsimile function set other than the polling function.

As described above, when the conventional fax detects a ring from the receiving side fax, the conventional fax transmits the data stored in the memory unit 1 at an arbitrary resolution and ends.

Therefore, in the conventional data transmission method according to the polling function, since there is no method of confirming the status of some sinodine data on the receiving side unless the data receiving state checking operation is performed by a telephone call with the receiving side, For example, if the data was not good after receiving the data, the user had to make a phone call and request retransmission at the changed resolution.

In other words, the data transmission method according to the conventional polling function has a problem that the transmitting side cannot confirm the state of the transmitted data and the receiving side has to request retransmission when the data receiving state is bad.

Accordingly, an object of the present invention is to provide a facsimile data transmission method capable of controlling a change in resolution from a receiving side and receiving high quality data when transmitting data according to a polling function.

According to an aspect of the present invention, there is provided a data transmission method of a facsimile comprising: a first step of transmitting a part of an original; Transmitting a signal for changing the resolution; A third step of monitoring whether there is a response from the receiver to the resolution change signal sent out in the second step; A fourth step of performing a resolution change operation when there is a resolution change request from the receiving side in the third step; And a fifth step of retransmitting a part of the original transmitted in the first step at the changed resolution.

In the data transmission method of the facsimile according to the present invention, when data transmission is performed by a polling function, the resolution can be changed by external control.

This is when the service for the resolution change is sent from the sender, the receiver requests the resolution change as a service request response. Then, the transmitting side may increase the image quality of the transmitted facsimile data by resending the data at the changed resolution according to the resolution change request of the receiving side.

Hereinafter, a method of transmitting facsimile data according to the present invention will be described in detail with reference to the accompanying drawings.

First, the hardware configuration of the system will be described prior to the description of the present invention.

Referring to FIG. 1, which shows the configuration of a general facsimile, the configuration is illustrated by a central processing unit 7, which controls the entire system and has a DRAM controller, and modulates and demodulates image data from an external input. DTMF (Dual Tone Multe-Frequency) modem (3) which detects the input tone, and ROM (2) which programs and stores data necessary for facsimile transmission of software and data for driving the system. Include.

And a network control unit (NCU) 4 for connecting the system to an external telephone line via the DTMF modem 3, and a dock for reading image data from a paper loaded for sending facsimile data. And a memory unit 1 for temporarily storing the data read from the reading unit 5 before performing the transmission function or temporarily storing the received data.

In addition, a key input unit 8 for inputting a key signal according to the user's selection and a printer unit 9 for printing received data or data for copying on paper are included.

The following describes a method of transmitting facsimile data according to the polling function of the present invention.

3 is a flowchart illustrating a method of transmitting a data of a facsimile according to the present invention. (A) shows an operation process of a transmitting side, and (B) shows an operation process according to a response of a receiving side.

And since the facsimile data transmission method according to the polling function of the present invention is a process for data transmission from the facsimile of the transmitting side to the receiving side, the flow chart of (a) will be mainly described, and the response of the receiving side shown in (b) is described above. In the middle of explaining the process of (a), we will explain it as necessary.

First, the user sets a memory polling function before performing data transmission (step 201). In this case, the CPU 7 reads and executes the memory polling function programmed in the ROM 2 by a user's command.

When the memory polling function is set in step 201, the user inputs the telephone number of the receiving party through the key input unit 8 and mounts the original to be transmitted by the reading unit 5.

Then, the central processing unit 7 sets an external control function so as to control the resolution change in accordance with the resolution change request function on the receiving side (step 202).

After performing step 202, the central processing unit 7 controls the reading unit 5 to read data, and the reading unit 5 reads image data from the loaded document. The read image data is stored in the memory unit 1 (step 203).

When the preparation operation of the data transmission using the memory polling function is completed by performing step 203, the CPU 7 checks whether the reception of the current data is possible in the receiving fax. In other words, the telephone number of the receiving side fax is dialed to check whether a ring signal is detected (step 204).

In this case, the receiving side facsimile is dialed, and when data can be received, the ring is sent to the transmitting side to inform that data can be received (step 300 and step 301).

If the ring signal is not detected in step 204, the system redials by a predetermined time until the ring signal is detected. If the ring signal is detected, the detected ring signal is transmitted to the data transmission request from the receiving side fax. In step 205, an operation of checking whether the ring signal is transmitted is performed.

If it is not the ring signal by the polling function in step 205, the normal facsimile data reception mode is performed (step 206).

If it is determined in step 205 that the ring signal is detected by the polling function, in step 203, one page of the read data is converted to an arbitrary resolution and transmitted through the DTMF modem 3 as a standard mode (step 207). step).

Data transmitted through the DTMF modem 3 is received at the receiving side facsimile via a telephone line and printing is performed at a printer in the system (step 302).

After the one-page amount of data is transmitted in step 207, the CPU 7 transmits a call request signal PRI_Q together with a signal indicating that the transmission of one page is completed (step 208).

The call request signal transmitted in step 208 is detected by the receiving side facsimile (step 303). After acknowledging the call request signal, the receiving side facsimile user determines the data state of the received one page. If it is determined that retransmission is necessary because the state of the received data is not good, the receiving side fax transmits a signal (PIP: Procedual Interrupt Positive) in response to the call request sent out in step 208 (step 304).

Next, the central processing unit 7 monitors whether the call request response signal is received after the one page data transmission in step 207 (step 209), and if the call request response signal is not transmitted by the receiving side fax. In step 207, the original data is judged to be in good condition, and data of the original remaining at the resolution which was performed at the time of sending out the first page data of step 207 is continuously sent (step 210).

If the signal in response to the call request is detected in step 209, the CPU 7 recognizes that the state of the transmitted data is not good, and the CPU 7 returns to a resolution higher than the resolution that was performed during data transmission in step 207. The service for change is sent (step 211).

At this time, the receiving side transmits the resolution of the data to be received according to the service transmitted from the transmitting side (step 305), and the sending side facsimile is changed to the resolution sent by the receiving side and the change of the resolution in accordance with the change of the resolution. In operation 212, an additional function change required for transmission is performed.

After changing the resolution, after performing step 212, data retransmission from page 1 is again performed at the changed resolution (step 213).

At this time, the receiving side facsimile receives the data transmitted at the resolution changed in step 213 (step 306).

After performing step 213, the process returns to step 207 to repeat the process of changing the resolution by external control.

During the repetition of the resolution change process by the external control, the central processing unit 7 monitors whether or not the resolution change operation is performed in accordance with the information input from the receiving side, and if there is no resolution change operation, the data continuously at the current resolution. (Step 214).

When the data transmission in step 214 is completed, the system ends after deleting data stored in the memory unit 1 (step 215).

As described above, in the facsimile data transmission method according to the present invention, when the facsimile data transmission by the polling function is not clear, when the received data is not clear, the receiving side may request control by changing the resolution from the transmitting side to the clearing level. It is possible to eliminate paper waste caused by poor original printing, and also to receive clear data on the receiving side.

Claims (2)

Transmitting a portion of the original; Transmitting a signal for changing the resolution; A third step of monitoring whether there is a response from the receiver to the resolution change signal sent out in the second step; A fourth step of performing a resolution change operation when there is a resolution change request from the receiving side in the third step; And a fifth step of retransmitting a portion of the original transmitted in the first step at the changed resolution. The method of claim 1, And transmitting the remaining part of the original at the current resolution when there is no resolution change request at the receiving end in the third step.