JP2002185685A - Communication terminal equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide communication terminal equipment for preventing any line from being uselessly disconnected even in normal G3 facsimile communication or facsimile communication using the Internet. SOLUTION: At the time of performing facsimile communication, the destination is inputted (ST1), and whether or not the destination is the destination of the Internet is decided (ST2), and when this is not the destination of the Internet, a detection signal waiting time t1 of normal G3 facsimile is set in a timer T (ST3), and when this is the destination of the Internet, a time t2 larger than the time t1 is set in the timer T (ST4), and after the connection and negotiation instruction transmission (ST5, ST6), response reception check is continued until the time-up of the timer T is detected (ST7, ST8).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a communication terminal such as an Internet facsimile machine.

[0002]

2. Description of the Related Art In recent years, Internet facsimile apparatuses for transmitting image data to the other party via the Internet have become widespread. This type of Internet facsimile apparatus can perform G3 facsimile communication via a telephone line in addition to transmission via the Internet.

[0003]

Generally, facsimile communication is performed by exchanging a procedure signal. When a signal is not detected within a predetermined time-up, the procedure signal is detected as a communication failure and the line is disconnected. .

In an Internet facsimile apparatus, when facsimile communication is performed via the Internet, the communication according to the above facsimile procedure passes.
Since the delay is large, the time often increases, and there is a problem that the line is disconnected.

The present invention has been made in view of the above problems, and provides a communication terminal device in which a line is not unnecessarily disconnected in normal G3 facsimile communication or facsimile communication using the Internet. It is intended to be.

[0006]

A communication terminal device according to the present invention comprises: a document reading unit, an image recording unit, a circuit connection unit,
Means for performing communication via the first network or the second network, so that the detection waiting time of the communication procedure signal is made different between when passing through the first line and when passing through the second line. .

Here, the first line network is, for example, a telephone line, and the second line network is, for example, the Internet.

In this communication terminal apparatus, for example, a communication procedure using a telephone line is changed so that the detection wait time of a communication procedure signal is changed depending on whether the communication terminal apparatus passes through a first network or a second network. Since the detection wait time of the communication procedure signal by the Internet is set longer than the signal detection wait time, it is possible to set an appropriate detection wait time that matches the delay characteristics of the line network used.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail with reference to embodiments. FIG. 1 is a schematic diagram showing a device configuration of a network facsimile system in which the present invention is implemented. Here, the Internet facsimile system includes a facsimile machine 21 on the transmitting side, a destination of a facsimile transmitted from the facsimile machine 21 specified by a telephone number, and facsimile data transmitted as a G3 facsimile over the telephone line 22. 23, a gateway 24 for sending facsimile data to the Internet 25 when the destination is specified by a mail address, and a gateway 26 on the destination side
From the gateway 26 via the telephone line 27,
And a facsimile device 28 for receiving facsimile data.

FIG. 2 is a block diagram showing a schematic configuration of the Internet facsimile apparatus 21 of the present invention. This Internet facsimile machine 21 is an MPU
(Control unit) 1, ROM 2, RAM 3, image memory (DR
AM) 4, an operation panel (operation unit) 5, a display unit 6 for displaying various data and the like, a bus 7, an NCU 8, a modem 9, a scanner 10, a printer (output unit) 11, and a CODEC 12. Here, a storage unit is constituted by the ROM 2, the RAM 3, and the image memory 4, and the NCU 8, the modem 9, the CODEC 1
2 constitutes a communication unit.

The MPU 1 controls each unit constituting the device 21, receives data from an external information source through a communication unit, stores the data in a storage unit, and displays the data stored in the storage unit on a display unit 6. It has a function to make Further, it has a function of switching the detection waiting time of the communication procedure signal to a different value depending on whether communication is performed via the telephone line 14 or the Internet 15. The ROM 2 stores a program for controlling the device 21. RA
M3 temporarily stores data and the like. Image memory 4
Temporarily stores received image data and image data read by the scanner 10. The operation panel 5 allows the user to send a fax
This is for instructing transmission / reception, printing, and the like.

The NCU 8 has a function of controlling connection with a telephone line (PSTN) 14 and detecting transmission and reception of a dial signal corresponding to a telephone number (including a FAX number) of a destination. . The modem 9 is an ITU-
Recommendation T. 30 based on a facsimile transmission control procedure according to V.30. 17, V.I. 27ter, V.I. Modulation and demodulation of transmission / reception data according to 29 or the like. Scanner 10
Reads image data of an original when performing FAX transmission and copying. The printer 11 records received image data and image data of a document read by the scanner 10 in a copy operation on a recording sheet. The CODEC 12 encodes (reads) the read image data by MH, MR, MMR, or the like in order to transmit the image data, and decodes (decodes) the received image data.

In this embodiment, the facsimile apparatus is connected to the facsimile gateway via the Internet, and the facsimile data is transmitted to the facsimile gateway apparatus through the PSTN 14 by the first instruction.
U-TT. A facsimile machine that can be transmitted in accordance with a G3 facsimile procedure conforming to the G.30 protocol, or can be instructed to transmit the data in real time to the Internet facsimile machine via the Internet by a second instruction. The subsequent response reception wait timer value is used for the first communication instruction, the first timer value is used, and for the second communication instruction, the second timer value is used.

Here, referring to the flow chart shown in FIG.
The setting of the communication procedure signal waiting time of the facsimile apparatus and the connection and release processing of the line will be described.

When the operation starts, first, at step ST
At 1, the destination is entered. Next, step ST
Move to 2. In step ST2, the input
Determines whether the destination is an Internet FAX destination
You. Here, if the destination is a telephone number, use PSTN
G3 facsimile, and the destination is an email address
If it is transmitted via the Internet. Addressed to
If the destination is a telephone number, the process proceeds to step ST3.
On the other hand, if the destination is an email address,
If it is a net fax, the process proceeds to step ST4.
You. In step ST3, the G3 facsimile communication
T corresponding to the detection waiting time of the communication procedure signal ₁The timer
T is set, and then the process proceeds to step ST5. Step
In step ST4, t₁Greater time t_TwoThe timer
Set to T. This time t_TwoIs slow on the Internet
It is set to a value that takes into account the rolling characteristics. Then,
The process proceeds to step ST5. In step ST5, the line
Connecting. After the connection, the process proceeds to step ST6.

In step ST6, a negotiation command is transmitted to the other party. Next, the process proceeds to step ST7. In step ST7, it is determined whether or not the timer T has expired. If the timer T has not expired, the process proceeds to step ST8. On the other hand, if the timer T has expired, the process proceeds to step ST.
Go to step 13.

In step ST8, it is determined whether or not a response has been received from the other party. If there is a response before the timer T times out, the process proceeds to step ST9. If there is no response, the process returns to step ST7, and the processing of steps ST7 and ST8 is repeated until the timer T times out or there is a response. In step ST9, an image signal is transmitted, and the process proceeds to step ST10.

In step ST10, a post command is transmitted, and the process proceeds to step ST11. Step ST
At 11, it is determined whether or not the timer T has expired. If the timer T has not expired, the process proceeds to step ST12. On the other hand, if the timer T has expired, the process proceeds to step ST13.

In step ST12, it is determined whether or not a response has been received. Step ST1 responds in a state where the timer T has not timed out or until there is a next response.
1. The process of ST12 is repeated. If there is a response in step ST12, the process proceeds to step ST14.

In step ST13, while the negotiation command is transmitted, no response is received until the timer T expires or until the timer T expires after transmitting the post instruction. Here, communication error processing is performed. Next, step ST1
Move to 4. In step ST14, the communication error processing in step ST13 and step ST1
In response to the response in step 2, the line connection is released, and the process ends.

[0021]

According to the present invention, the first line network or the second
Means for performing communication via the network, and the communication procedure signal detection waiting time is made different between when passing through the first line and when passing through the second line. In addition, it is possible to set an appropriate detection waiting time, and it is possible to prevent unnecessarily disconnection of a line even in facsimile communication using the Internet.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a device configuration of a network facsimile system in which the present invention is implemented.

FIG. 2 is a block diagram showing a configuration of a facsimile apparatus of the system.

FIG. 3 is a flowchart illustrating a process of setting a detection waiting time of a communication procedure signal of the facsimile apparatus and a process of connecting / disconnecting a line.

[Explanation of symbols]

 1 MPU 2 ROM 3 RAM 4 Image memory 5 Operation panel 6 Display unit 7 Bus 8 NCU 9 Modem 10 Scanner 11 Printer 12 CODEC 14 Telephone line 21, 23, 28 Facsimile device 22, 27 Telephone line 24, 26 Gateway 25 Internet

Claims (2)

[Claims] An original reading unit, an image recording unit, a circuit connection unit, and means for performing communication via a first network or a second network, and a communication procedure signal detection waiting time is provided. The first
A communication terminal device which is different between when passing through a line and when passing through a second line. 2. The communication terminal device according to claim 1, wherein said first network is a telephone line, and said second network is the Internet.