KR960001508B1 - Method of setting communication situation in facsimile system - Google Patents

Abstract

registering the presence or absence of an error generation and a transmission speed of a modem as a communication state setting information; checking that a dialing telephone number corresponds to the communication state setting code, in response to a dialing; setting an error process request when the dialing telephone number corresponds to an error generation local code; and setting the transmission speed of the modem at a registered speed when the dialing telephone number corresponds to a line state error local code.

Description

How to Set Up Communication Status on Fax Systems

1 is a block diagram of a facsimile system to which the present invention is applied.

2 is a flowchart of a communication state registration function according to the present invention.

3 is a flowchart of a communication state setting function according to the present invention.

4 is a configuration diagram of communication state setting information for carrying out the present invention.

* Explanation of symbols for main parts of the drawings

10: central processing unit 20: memory unit

30: OPE 40: scanner

50: modem 60: NCU

70: printer 80: sensor

90: speaker

The present invention relates to a communication state setting method in a facsimile system, and more particularly, to a communication state setting method for automatically setting a communication state in advance in correspondence with a dialed telephone number.

In general, a communication error has frequently occurred due to instability of a communication line in a foreign system or a domestic communication in a facsimile system. That is, in case of overseas communication, a communication error occurs due to the existence of an echo due to long distance communication and a weakness of a communication line, and a communication error occurs due to a weakness of a communication line in domestic communication. At this time, the echo is a phenomenon that occurs when the state of the line, that is, the impedance matching of the line is incomplete. Impedance mismatch of these lines occurs frequently, especially during long distance calls. As a result of frequent retransmission and reception, there has been a problem of increasing the call charge as the line occupancy time becomes longer.

As a method of preventing the occurrence of an echo in the presence of the echo, there is a patent application No. 91-8351 filed in 1991 by the same applicant and the applicant. The above-mentioned patent application 91-8351 discloses whether there is an echo by transmitting or not echoing CNG (Calling tone) during the communication protocol (i.e., CCITT Recommendation T.30) before performing the communication. Detect. At this time, when the echo CNG is received after transmitting the CNG, it is determined that an echo has occurred, otherwise it is determined that there is no echo. If there is an echo, the echo is prevented from occurring by delaying a predetermined time when transmitting a signal in response to the reception from the other party. However, the patent application 91-8351 has a problem that should detect the presence or absence of echo every time.

Accordingly, in No. 91-12833 filed in 1991 by the same applicant as the applicant of the present application, the area of the telephone number to be dialed is automatically registered in advance such as the transmission speed, echo processing, etc. By changing the setting to, the inconvenience of the user setting manually is improved. At this time, by checking whether the first three digits of the dialed telephone number is "1", the domestic and overseas region is determined.

On the other hand, in Korea, service institution codes for international call services are set differently according to service organizations. For example, Korea Telecom is "1", and Dacom is "2". In addition, the communication conditions vary from country to country, and even in one country, the communication conditions may vary.

However, the patent application No. 91-12833 simply checks whether the first three digits of the dialing telephone number is "1" and decides whether it is a domestic or overseas region. There was a problem that can not be taken. In addition, there is a problem of little practicality by setting the communication status by simply divided into domestic and overseas regions.

Accordingly, an object of the present invention is to provide a communication state setting method that can improve the above-mentioned conventional problem.

Another object of the present invention is to provide a communication state setting method for registering a communication state for each country and region in the world in advance and automatically setting the communication state to a registered state corresponding to a dialed telephone number.

The present invention for achieving the above object is to register the presence of echo generation and the transmission speed of the modem as the communication state setting information corresponding to each unique communication state setting code included in the other party's telephone number, and dialing telephone in response to dialing Checking whether a number corresponds to the registered setting code; setting an echo processing request when the dialing telephone number corresponds to an echo generation area code; and dialing telephone number corresponds to a line status bad area code. And a process of setting a transmission rate of the modem to the registered transmission rate.

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

1 is a block diagram of a general facsimile to which the present invention is applied, and stores a central processing unit 10 for controlling the facsimile system according to a set program in general, and an operation program of the central processing unit 10. A memory unit 20 for storing data according to the execution of the program by the central processing unit 10, a key data having a plurality of keys, and applying key presses according to pressing of the keys to the central processing unit 10, The OPEN (Operating Pannel Equipment) 30 which displays the operation state under the control of (10), and converts the image of the original into binary information after scanning the state of the original, and then the central processing unit 10 And a modem 50 for modulating and outputting the output data of the central processing unit 10 into an analog signal and demodulating the received signal to the central processing unit 10. center A network control unit (NCU) 60 which forms a communication path between the telephone line and the modem 50 under the control of the controller 10, and prints information output from the central processing unit 10. A printer 70, a sensor unit 80 that detects a state of an original and a recording sheet and provides the central processing unit 10 to the central processing unit 10, and a speaker 90 that generates an alarm sound under the control of the central processing unit 10. It is composed of

2 is a flow chart of a line state registration function according to the present invention. The memory unit 20 uses the state of echo generation and the transmission speed of the modem as communication state setting information corresponding to each unique communication state setting code included in the other party's telephone number. Shows the process of registering to save.

3 is a flowchart of a line state setting function according to the present invention, in which a dialing check process checks whether a dialing phone number corresponds to a communication state setting code in response to dialing, and the dialing phone number is the communication in the dialing check process. An echo area inspection process for checking whether an echo generation area code is applied when the status setting code corresponds, and an echo processing setting process for setting an echo processing request when the echo area code corresponds to the echo generation area code, and the echo area A line state inspection process that checks whether a dialing telephone number corresponds to a bad line state area code when the echoing area code does not correspond to an echo occurrence area code during the inspection process, and the dialing telephone number If applicable, transfer speed of modem according to communication state setting information Transmission rate setting process, and to set as it has done in the process of the echo area check a transmission procedure for transmitting the document the dialed number does not correspond to the communication condition setting code by performing a communication procedure after completion of the transmission rate setting process.

4 is a configuration diagram of communication state setting information for carrying out the present invention, and comprises a communication state setting code and communication state setting information. The communication status setting code is composed of a service authority code, a country code, and a region code. The communication state setting information includes the presence or absence of an echo, the line state, and the modem transmission speed.

Hereinafter, an operation of a specific embodiment according to the present invention will be described in detail with reference to FIGS. 1 to 4.

First, in the facsimile as shown in FIG. 1, the user communicates whether there is an echo occurrence, the line state, and the transmission speed of the modem 50 by using a key on the OPE 30 corresponding to each unique communication state setting code included in the other party's telephone number. As the state setting information, it is stored and registered in the memory unit 20 as shown in FIG. Here, the communication state setting code corresponds to a dialed telephone number, and as shown in FIG. 4, a service institution code, a country code, and a region code. Therefore, the service organization code is "1", "2", "11", etc. as described above, the country code is the country code, the area code is the area code. The reason for this distinction is that, for example, when you call from Japan to Korea, you do not have an echo phenomenon, but when you call to Switzerland or Germany, you have to perform echo processing because there are many echoes. In addition, each country has its own line status, and each country has its own line status.

When the user presses the communication state setting key on the OPE 30 to register the communication state setting information as described above, the central processing unit 10 recognizes this in step 201 of FIG. Follow the steps. Here, the communication state setting key is set by, for example, pressing "function key" and any one numeric key together. In step (202)-(204), the central processing unit 10 inputs the communication state setting code and the communication state setting information as described above input by the user, and then corresponds to the communication state setting code. The setting information is stored in the setting area of the memory unit 20 as shown in FIG.

At this time, the communication state setting information is composed of the presence or absence of echo, line state, and modem transmission speed as shown in FIG.

The presence or absence of the echo in FIG. 4 is information confirmed by the same method as in the aforementioned patent application No. 91-8351, which indicates whether there is an echo for a service institution, a country, or a region according to a setting code, that is, a telephone number, in a corresponding communication state. Information to indicate.

In addition, the line status of FIG. 4 is information to be judged according to whether or not to receive RTN (Retrain negative) by the communication procedure recommended in CCITT Recommendation T.30. This is information indicating whether or not the local line state is bad. The RTN is a signal to be transmitted to the transmitting side when the receiving side does not satisfactorily receive the message. Typically, 10% or more of the number of horizontal scan lines of a received document transmits an RTN to a communication counterpart when an error occurs. In this case, since the line state is poor, the error is usually prevented by lowering the transmission speed of the modem 50 by one step. In this case, the modem 50 supports various transmission speeds, and transmits and receives with a communication counterpart at a transmission speed set by the control of the CPU 10.

In addition, the modem transmission speed of FIG. 4 is information indicating the transmission speed of the modem 50 in which no error occurs in accordance with the line state.

Thereafter, when the completion key is input, the central processing unit 10 ends in step 205, and if the completion key is not input, repeats steps 202 and 204 to set the next communication state setting code and communication state. The information is input and stored in the memory unit 20 as shown in FIG. Here, the completion key is set by pressing, for example, the "stop key".

As described above, when the user dials to send a document to a counterpart of a domestic or foreign country while the communication state is set and registered, the central processing unit 10 responds to this in step 301 of FIG. Check whether the dialing telephone number corresponds to the communication state setting code stored and registered in the memory unit 20 as shown in FIG. At this time, the central processing unit 10 checks whether the echo generation area code is detected in step 303 when the dialing telephone number corresponds to the communication status setting code. Set the echo processing request by setting. At this time, the echo processing request flag is set in the internal register of the central processing unit 10 or the memory unit 20. After performing the operation 305 in step 303 or after performing step 305, the central processing unit 10 checks whether the dialing telephone number corresponds to a bad line state area code in step 304. do. At this time, when the dialing telephone number corresponds to a poor line state area code, the CPU 10 sets the transmission rate of the modem 50 to the transmission rate according to the communication state setting information stored and stored in the memory unit 20. . Next, in step 307, the communication procedure according to CCITT Recommendation T.30 is performed, and after the original is transmitted and received through the modem 50 and the NCU 60, the procedure ends. At this time, when performing the communication procedure, the CPU 10 performs echo processing when the echo processing request flag is set. For example, as described in the above-mentioned patent application No. 91-8351, a predetermined time during signal transmission is performed. The delay prevents the occurrence of echoes. In addition, the transmission and reception of the original is made according to the transmission speed of the modem 50 set as described above.

On the other hand, the central processing unit 10 performs step 307 as it is when the dialing telephone number does not correspond to the communication state setting code in step 302. Therefore, in this case, the original is transmitted and received by performing the same communication procedure as in the normal case.

Therefore, the original can be sent in the optimum communication state. As described above, the present invention has the advantage of being able to transmit and receive an original in an optimal communication state by registering the communication state for each country and region in the world in advance and automatically setting the communication state to the registered state corresponding to the dialed telephone number. There is this.

Claims (5)

A method of setting a communication state in a facsimile system, the method comprising: registering an echo occurrence and a transmission speed of a modem as communication state setting information corresponding to each unique communication state setting code included in the other party's telephone number, and dialing in response to dialing. Checking whether a telephone number corresponds to the registered setting code; setting an echo processing request when the dialing telephone number corresponds to an echo generation area code; And setting the transmission rate of the modem to the registered transmission rate when applicable. The method of claim 1, wherein the communication state setting code is a service authority code, a country code, and a region code. A method for setting a communication state in a facsimile system having memory means for storing echo generation and modem transmission speed as communication state setting information corresponding to each unique communication state setting code included in the other party's telephone number. A dialing checking process for checking whether the dialing telephone number corresponds to the communication state setting code in response to the echo, and an echo for checking whether the dialing telephone number corresponds to the communication state setting code if the dialing telephone number corresponds to the communication state setting code An area processing process, an echo processing setting process for setting an echo processing request when the echo area code is generated in the echo region checking process, and the dialing telephone number corresponds to a line state bad area code after performing the echo processing setting process Line condition inspection process for inspecting If the dialing telephone number corresponding to the line state bad area code in the process, the communication state setting method comprising the transmission rate setting step of setting the transmission rate of the modem to the transmission rate according to the communication state setting information . The communication procedure according to claim 3, wherein in the echo region checking process, if the dialing telephone number does not correspond to the communication state setting code or if the echo processing request is set after performing the transmission rate setting process, echo processing is performed. And further comprising a transmission process for transmitting an original according to the set modem. 5. The method according to claim 3 or 4, wherein the communication state setting code is a service authority code, a country code, and a region code.