JP2001144879A - Communication terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a communication terminal capable of reliably executing communications by eliminating a communication fault even when communications are not possible like a conventional example in communications with an opposite party. SOLUTION: A facsimile machine 20 has a shortened dial table 7d in a RAM 7 for previously storing telephone numbers being a plurality of pieces of destination information by each shortened number and communication conditions including a busy sound pattern, a communication sequence pattern, a calling sound pattern and a signal sending level which are respectively set in accordance with each destination information. A main control part 1 automatically set- changes the set communication condition in accordance with a communication fault state in communications with the facsimile machine of an opposite party in accordance with a prescribed procedure (a step S8 in Fig. 6, steps S14, S20 in Fig. 7 and a step S35 in Fig. 8).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication terminal apparatus such as a facsimile apparatus having a communication condition changing function for automatically changing the setting of communication conditions.

[0002]

2. Description of the Related Art In recent years, the line quality of domestic communication lines has been remarkably improved, and facsimile machines can normally communicate with the other party in most cases without causing communication errors.

[0003]

However, especially in facsimile communication with foreign countries, there is a problem that the communication line bandwidth, noise, and the signal of the exchange are different depending on the communication partner, and there is a problem that communication may not be possible. Was.

[0004] An object of the present invention is to solve the above-mentioned problems, and even in the case where communication with the other party cannot be performed as in the conventional example, a communication failure can be resolved and communication can be performed more reliably. A communication terminal device is provided.

[0005]

According to a first aspect of the present invention, there is provided a communication terminal device, comprising: storage means for storing a plurality of pieces of destination information and communication conditions set corresponding to each piece of the destination information;
And a change unit configured to automatically change the set communication condition according to a predetermined procedure according to a communication failure state during communication with the communication terminal device of the other party.

According to a second aspect of the present invention, there is provided the communication terminal device according to the first aspect, wherein the communication condition is:
It is characterized in that it is a condition for detecting a signal transmitted from the exchange on the communication terminal device side of the other party.

Further, a communication terminal device according to a third aspect of the present invention,
2. The communication terminal device according to claim 1, wherein the communication condition is at least one of a transmission timing and a detection time for a communication procedure signal.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

<Embodiment> FIG. 1 is a block diagram showing a configuration of a facsimile apparatus 20 having a communication condition changing function according to an embodiment of the present invention. In the facsimile apparatus 20 of this embodiment, for each abbreviated number, a telephone number that is a plurality of pieces of destination information, a busy tone pattern, a communication procedure pattern, and a ring tone pattern that are respectively set corresponding to each piece of the destination information. The abbreviated dial table 7d for storing communication conditions including the signal transmission level in the RAM 7 is stored in the RAM 7, and the main control unit 1 of the facsimile apparatus 20 performs the above-described operation according to the communication failure state during the communication with the facsimile apparatus of the other party. It is characterized in that the set communication conditions are automatically changed according to a predetermined procedure (step S8 in FIG. 6, steps S14 and S20 in FIG. 7, and step S35 in FIG. 8).

Here, the communication conditions for which the setting can be changed are as follows. (1) Busy tone (busy tone) pattern, (2) Ringing tone (ringback tone; RBT) pattern, (3)
The communication procedure pattern, specifically, (a) a standby time from detection of a CFR signal to transmission of image data (that is, transmission timing of image data), and (b) a setting time of a detection timer of an MCF signal ( In other words, it is the detection time of the CFR signal.) And (4) signal transmission level.
The signals (1) and (2) are conditions for detecting a signal transmitted from the exchange on the communication terminal apparatus side of the other party.

[0011] The above communication failure situation is specifically as follows. (1) Busy sound cannot be detected (N in step S4 in FIG. 6)
O), (2) Ringing tone cannot be detected (NO in step S32 in FIG. 8), (3) MCF signal cannot be detected, and time is up in a predetermined time (NO in step S18 in FIG. 7 and YES in step S19). , And (4) CRF signal cannot be detected (NO in step S13 in FIG. 7).

In FIG. 1, a facsimile machine 20 comprises
It has a facsimile communication function such as a conventional G3 system and a communication condition changing function. The main control unit 1 is specifically composed of a CPU, is connected to the following hardware units via a bus 13, controls them, and executes various software functions to be described later. The image reading unit 2 reads an original with a scanner using a CCD or the like, and outputs dot image data converted to binary black and white. The image recording unit 3 is a printer device of an electrophotographic system or the like, and prints out and records image data received from another facsimile device by facsimile communication as a hard copy. The display unit 4 is a display device such as a liquid crystal display (LCD) or a CRT display, and displays an operation state of the facsimile machine 20, and displays image data of a document to be transmitted and received image data. .

An operation unit 5 includes character keys, dial numeric keys, and dial keys necessary for operating the facsimile machine 20.
It has speed dial keys, one-touch dial keys, and various function keys. In addition, by making the above-mentioned display unit 4 a touch panel type, this operation unit 5
A part or all of the various keys may be substituted.

The ROM 6 stores in advance various software programs necessary for the operation of the facsimile machine 20 and executed by the main control unit 1, wherein the programs are transmitted at least as shown in FIG. 6 to FIG. Includes processing program. The RAM 7 is composed of an SRAM, a flash memory, or the like, and is used as a working area of the main control unit 1 and stores temporary data generated when a program is executed. When a flash memory is used as the RAM 7, even if the power is cut off due to a power failure, a movement of the apparatus, or the like, the contents of the data are not lost. The image memory 8 is composed of a DRAM or the like, and stores image data to be transmitted or received image data. Note that the RAM 7 and the image memory 8 may be constituted by a hard disk memory.

The fax modem 10 is connected to a public telephone line L
And demodulates the data of the outgoing telephone number information received as the FSK signal and outputs it to the main control unit 1. NCU (Network control circuit: Networ
k Control Unit) 11 is a hardware circuit that performs closing and opening operations such as a DC loop of the analog public telephone line L and has an automatic dial function. The fax modem 10 is connected to the public telephone line L as necessary. Connecting.
Here, the NCU 11 detects an ID receiving terminal activation signal and a normal telephone call signal in the outgoing telephone number notification service, and transmits a primary response signal and a secondary response signal in the outgoing telephone number notification service as necessary. can do. The NCU 11 is connected to a predetermined terminal adapter and DSU (Digital Service Unit: Digital Service Unit).
Unit) may be connected to a digital line of the baseband transmission system (for example, an ISDN line).

The facsimile apparatus 20 of the present embodiment configured as described above has a communication condition changing function in addition to the normal G3 facsimile communication function or the like. In the facsimile communication function, dot image data read by the image reading unit 2 is encoded by software according to an encoding system such as MH, MR, MMR or the like defined in the standard of facsimile communication, and then the other party's facsimile apparatus. On the other hand, the encoded data received from the other party's facsimile machine is also decoded into image data by software and output from the image recording unit 3 as a hard copy. The image memory 8 stores the image data as needed, and outputs the stored image data as needed.

FIG. 2 is a diagram showing an example of the busy tone pattern table 7a in the RAM 7 of FIG. As shown in FIG. 2, the busy tone pattern table 7a is input and stored in advance to define the range of the make-up rate of the busy tone and the frequency range of the busy tone for each pattern number. I have. When changing the busy tone pattern, the pattern is changed, for example, in ascending order of pattern numbers.

FIG. 3 is a diagram showing an example of the communication procedure pattern table 7b in the RAM 7 of FIG. As shown in FIG. 3, a standby time from the detection of a CFR signal to transmission of image data and a set time of a detection timer of an MCF signal are previously input and stored in the communication procedure pattern table 7b for each pattern number. ing. When the communication procedure pattern is changed, the pattern is changed, for example, in ascending order of the pattern number.

FIG. 4 is a diagram showing an example of a ringing tone pattern table 7c in the RAM 7 of FIG. As shown in FIG. 4, the busy tone pattern table 7c is input and stored in advance for each pattern number in order to define a range of a make-up rate of a ringing tone and a range of a ringing frequency. When changing the ringing tone pattern, for example, the pattern numbers are changed in ascending order.

FIG. 5 is a diagram showing an example of the speed dial table 7d in the RAM 7 of FIG. As shown in FIG. 5, this abbreviated dial table 7d stores, for each abbreviated number,
Communication conditions including a telephone number, which is a plurality of pieces of destination information, a busy tone pattern number, a communication procedure pattern number, a ringing tone pattern number, and a signal transmission level, which are respectively set corresponding to each piece of the destination information, are set. The information is previously input and stored using the operation unit 5. As will be described later in detail, data other than the telephone number is automatically rewritten and changed as necessary according to the communication state of facsimile communication.

FIGS. 6 and 7 are flow charts showing the transmission processing executed by the main control section 1 of the facsimile apparatus of FIG. In FIG. 6, first, in step S1, an abbreviated number of a destination is input using the operation unit 5, a call is made to the destination in step S2, and then, in step S3.
It is determined whether or not the DIS signal has been detected. If YES in step S3, step S1 in FIG.
On the other hand, if NO, the process proceeds to step S4.

Then, it is determined in step S4 whether or not a busy tone is detected. If YES, step S9 is performed.
On the other hand, if NO, the process proceeds to step S4A. In step S4A, after executing the ringing tone detection process, which is a subroutine of FIG. 8, it is determined in step S5 whether a predetermined time has elapsed (for example, 35 seconds of the T1 timer) and the time has elapsed. If the answer is NO, the process proceeds to step S3.
Next, in step S6, it is determined whether or not there is a busy tone pattern to be changed. If YES, step S8
After changing the busy tone pattern to another pattern, the process proceeds to step S9. On the other hand, if NO in step S6, the line is opened in step S7, and then step S7A
Then, a predetermined non-delivery report is printed using the image recording unit 3, and the transmission process is completed.

Further, in step S9, the line is released. In step S10, it is determined whether or not the dial is the fifth time. If the answer is NO, the process waits for a redial interval of 3 minutes, and returns to step S2 to re-call the same destination. I do. On the other hand, if YES in step S10, step S7A
Then, a predetermined non-delivery report is printed using the image recording unit 3, and the transmission process is completed.

In step S12 of FIG. 7, the DCS
A signal, a training signal, and a TCF signal are transmitted, and it is determined whether a CFR signal is detected in step S13. If YES, the process proceeds to step S15 while N
In the case of O, the process proceeds to step S14. In step S14, the signal transmission level is increased by 1 dB from the current level. Here, the maximum limit is -8 dBm. Step S
After the process in step 14, the process returns to step S9 in FIG. In step S15, the process waits for the standby time of the communication procedure pattern set in the speed dial table 7d.
In step S17, an original is read and the image data is transmitted, and in step S17, an EOP signal is transmitted.

Next, in step S18, it is determined whether or not the MCF signal has been detected. If the determination is NO, it is determined in step S19 whether or not the time has expired by the MCF signal detection timer. It returns to step S18. Here, if YES is determined in the step S19, the communication procedure pattern is changed to another pattern in a step S20, and then, the process returns to the step S9 in FIG. If YES in step S18, step S
After the line is released in step 21, it is determined in step S22 whether the transmission condition is changed and the transmission is OK. If YES, the speed dial table 7d is overwritten with the changed condition in step S23. Rewrite and end the transmission processing. On the other hand, if NO in step S22
, The transmission process is terminated.

FIG. 8 is a flowchart showing a ringing tone detection process (step S4A) which is a subroutine of FIG. In FIG. 8, first, at step S31, the RBT
The flag is reset to 0, and then it is determined whether or not a ringing tone is detected in step S32. If YES, the process proceeds to step S33, whereas if NO, the process proceeds to step S3.
Proceed to 4. In step S33, the RBT flag is reset to 1 and the process returns to step S32. On the other hand, step S3
If NO in step 2, it is determined whether the RBT flag is 1 in step S34. If NO, the ringing pattern is changed to another pattern in step S35, and the process returns to step S32. On the other hand, in step S34, YE
In the case of S, the process returns to the original routine.

As described above, according to the present embodiment, the facsimile machine 20 sets the telephone number, which is a plurality of destination information, for each abbreviated number, and the busy line, which is set corresponding to each destination information. The RAM 7 has a shortened dial table 7d in which communication conditions including a sound pattern, a communication procedure pattern, a ringing tone pattern, and a signal transmission level are stored in advance, and the main control unit 1 of the facsimile apparatus 20 communicates with the other facsimile apparatus. The communication conditions set above are automatically changed according to a predetermined procedure according to the communication failure state during the communication (step S8 in FIG. 6, steps S14 and S20 in FIG. 7, and step S35 in FIG. 8). Therefore,
Automatically learning individually according to the communication failure situation during communication with the other party's facsimile machine, and it is possible to make detailed settings for communication conditions, so that communication failures can be resolved, and communication with the other party's facsimile machine can be done. Communication can be performed reliably.

The communication condition is, for example, a condition for detecting a signal transmitted from the exchange on the other party's facsimile machine side, whereby the signal from the exchange on the other party can be reliably detected. Since the sound and the ringing tone can be reliably detected and the call can be abandoned, the communication procedure is efficient.

Further, the communication condition is at least one of the transmission timing and the detection time for the communication procedure signal, whereby the transmission timing and the detection time can be automatically adjusted. Can communicate.

<Modification> In the above embodiment, an example of the facsimile machine 20 has been described. However, the present invention is not limited to this, and is connected to a public network such as a public telephone network or a public digital network. For example, the present invention can be applied to a communication terminal device including a telephone, a data communication device, and the like.

[0031]

As described above in detail, according to the communication terminal device of the first aspect of the present invention, a storage for storing a plurality of destination information and communication conditions set corresponding to each destination information. Means for changing the set communication conditions automatically in accordance with a predetermined procedure according to a communication failure state during communication with the communication terminal apparatus of the other party.
Therefore, it is possible to perform automatic learning individually according to the communication failure situation during communication with the communication terminal device of the other party and make detailed settings for the communication conditions. It is possible to reliably perform communication with the communication terminal device.

According to the communication terminal device of the present invention, in the communication terminal device of the first aspect, the communication condition is a detection condition of a signal transmitted from the exchange on the communication terminal device side of the other party. is there. Therefore, it is possible to reliably detect the signal from the exchange of the other party, and for example, it is possible to reliably detect the busy tone or the ringing tone and abandon the call, so that the efficiency of the communication procedure is high.

Further, according to the communication terminal device described in claim 3, in the communication terminal device described in claim 1, the communication condition is at least one of a transmission timing and a detection time relating to a communication procedure signal. Therefore, since the transmission timing and the detection time can be automatically adjusted, it is possible to reliably communicate with the communication terminal device of the other party.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a facsimile apparatus 20 having a communication condition changing function according to an embodiment of the present invention.

FIG. 2 is a diagram showing an example of a busy tone pattern table 7a in a RAM 7 of FIG.

FIG. 3 is a diagram showing an example of a communication procedure pattern table 7b in a RAM 7 of FIG.

FIG. 4 is a diagram showing an example of a ringing tone pattern table 7c in a RAM 7 of FIG.

FIG. 5 is an abbreviated dial table 7 in the RAM 7 of FIG.
It is a figure showing an example of d.

FIG. 6 is a flowchart showing a first part of a transmission process executed by the main control unit 1 of the facsimile machine of FIG.

FIG. 7 is a flowchart showing a second part of the transmission process executed by the main control unit 1 of the facsimile machine of FIG.

FIG. 8 is a flowchart showing a ringing tone detection process (step S4A) which is a subroutine of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Main control part, 6 ... ROM, 7 ... RAM, 7a ... Busy tone pattern table, 7b ... Communication procedure pattern table, 7c ... Ring tone pattern table, 7d ... Abbreviated dial table, 10 ... Fax modem, 11 ... NCU , 13 ... bus, 20 ... facsimile machine, L ... public telephone line.

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) H04N 1/32 H04L 13/00 311 F term (reference) 5C075 CD26 CD27 CE04 CE12 FF90 5K034 AA06 CC04 DD01 EE12 HH01 HH02 HH63 5K035 BB01 DD01 EE04 FF04 5K036 AA15 BB11 DD11 DD48 EE01 5K101 KK01 LL01 PP06 TT01 TT08 UU12 VV04

Claims (3)

[Claims] 1. A storage means for storing a plurality of pieces of destination information and communication conditions set corresponding to each piece of destination information, and said setting according to a communication failure state during communication with a destination communication terminal apparatus. And a changing means for automatically changing the set communication condition according to a predetermined procedure. 2. The communication terminal device according to claim 1, wherein the communication condition is a condition for detecting a signal transmitted from an exchange on the communication terminal device side of the other party. 3. The communication terminal device according to claim 1, wherein the communication condition is at least one of a transmission timing and a detection time for a communication procedure signal.