JP5677686B2 - FAX transmission apparatus and FAX transmission program - Google Patents

Description

  The present invention relates to a transmission retry technique when FAX (facsimile) transmission fails.

The FAX standard has three types of transmission modes: G4 mode, super G3 mode, and G3 mode.
Super G3 mode and G3 mode can be used on both analog and PRI lines. The super G3 mode is faster than the G3 mode, and can transmit one A4-size original in 3 to 4 seconds, which is about twice as fast as the G3 mode. However, an error is likely to occur in the super G3 mode if the line quality is poor compared to the G3 mode. For this reason, when FAX transmission is performed in the super G3 mode, transmission failure tends to occur if the line quality is poor.
Note that poor line quality means a line that is prone to errors, such as noise.

  Japanese Patent Application Laid-Open No. H10-228667 describes that when transmission fails, transmission retry is performed at a reduced transmission speed.

JP 09-326911 A

When the line quality is poor, even if transmission retry is performed at a reduced transmission speed, transmission is not successful and transmission failure is often repeated.
An object of the present invention is to succeed in transmission without repeating transmission failure even when the line quality is poor.

The FAX transmission apparatus according to the present invention is:
A FAX transmission unit that performs FAX transmission;
A result receiving unit for receiving a result of FAX transmission performed by the FAX transmitting unit;
A transmission control unit configured to change a FAX transmission mode and cause the FAX transmission unit to perform FAX transmission again when a result received by the result reception unit indicates a transmission failure;

When the result indicates a transmission failure, the transmission control unit causes the FAX transmission unit to perform a FAX transmission again without changing the FAX transmission mode according to an error code indicating the cause of the transmission failure. And changing whether to make the FAX transmission unit perform FAX transmission again.

When the error code indicates that the cause of the transmission failure is due to the influence of the line, the transmission control unit changes the FAX transmission mode and causes the FAX transmission unit to perform FAX transmission again.

The transmission control unit changes the FAX transmission mode, and when the FAX transmission result indicates a transmission failure when the FAX transmission unit transmits the fax again, the transmission control unit decreases the transmission speed and sends the FAX transmission unit to the FAX transmission unit again. It is characterized by transmitting.

The transmission control unit changes the FAX transmission mode to the G3 mode when the FAX transmission unit performs the FAX transmission in the super G3 mode, and the result indicates a transmission failure, and sends the FAX transmission unit to the FAX transmission unit again. It is characterized by transmitting.

The FAX transmission program according to the present invention is:
FAX transmission processing for performing FAX transmission;
A result reception process for receiving a result of the FAX transmission performed in the FAX transmission process;
When the result received in the result reception process indicates a transmission failure, the FAX transmission mode is changed, and a transmission control process for performing FAX transmission again is executed by the computer.

  In the FAX transmission apparatus according to the present invention, when transmission fails, the transmission mode is changed and transmission retry is performed. Therefore, even if the line quality is poor, the possibility of successful transmission increases.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram of an overview of a FAX transmission apparatus according to a first embodiment. 1 is a configuration diagram of a FAX transmission apparatus 10 according to Embodiment 1. FIG. 3 is a flowchart showing the operation of the FAX transmission apparatus 10 according to the first embodiment. FIG. 3 is a diagram illustrating an example of a hardware configuration of the FAX transmission apparatus 10.

Embodiment 1 FIG.
FIG. 1 is an explanatory diagram of an outline of the FAX transmission apparatus 10 according to the first embodiment.
The FAX transmission apparatus 10 performs FAX transmission in the super G3 mode at normal times. However, if the result of FAX transmission is transmission failure, the transmission mode is changed from the super G3 mode to the G3 mode, and transmission retry is performed.
When the line quality is poor, transmission may not succeed even if transmission retry is performed many times in the super G3 mode. However, changing the transmission mode to the G3 mode and performing transmission retry increases the possibility of successful transmission.

FIG. 2 is a configuration diagram of the FAX transmission apparatus 10 according to the first embodiment.
The FAX transmission device 10 includes a FAX transmission unit 11, a result reception unit 12, and a transmission control unit 13.
Upon receiving a FAX transmission request, the FAX transmission unit 11 performs FAX transmission according to the transmission request. The FAX transmission request includes transmission data (image data), a destination, and the like, and the FAX transmission unit 11 sends the transmission data included in the FAX transmission request to the destination included in the FAX transmission request. Send.
The result receiving unit 12 receives a result of FAX transmission performed by the FAX transmitting unit 11. The result of FAX transmission is information transmitted by, for example, a FAX board. The result of FAX transmission includes information indicating transmission success or transmission failure and an error code indicating the cause in the case of transmission failure.
When the result of FAX transmission received by the result receiving unit 12 indicates transmission failure, the transmission control unit 13 causes the FAX transmitting unit 11 to perform a transmission retry according to the error code.

FIG. 3 is a flowchart showing the operation of the FAX transmitting apparatus 10 according to the first embodiment.
Upon receiving a FAX transmission request (S1), the FAX transmission unit 11 calls a destination FAX machine included in the FAX transmission request (S2). Then, the FAX transmission unit 11 transmits the transmission data to the transmission destination FAX machine in the super G3 mode (S3).
Thereafter, the result receiving unit 12 receives the result of FAX transmission (S4). Then, the transmission control unit 13 determines whether the result of FAX transmission is transmission success or transmission failure (S5). If the transmission is successful, the transmission control unit 13 updates the transmission history (S6) and ends the process. On the other hand, if the transmission is unsuccessful, the transmission control unit 13 determines an error code (S7).

The transmission control unit 13 divides processing into the following cases 1 to 3 according to an error code.
Case 1 is a case where the error code indicates that the transmission destination cannot receive transmission data. For example, Case 1 is a case where the error code indicates a hardware failure, insufficient capability of the FAX apparatus, and the transmission destination is not a FAX machine.
Case 2 is a case where the error code indicates that the transmission destination cannot temporarily receive transmission data. For example, Case 2 is a case where the error code indicates that the transmission destination is busy, a call timeout, and no response.
Case 3 is a case in which the error code indicates that the channel is affected, such as poor channel quality or unstable communication environment. For example, Case 3 is a case where the error code indicates a negotiation timeout, a negotiation error, a disconnection during transmission, or the like.

  In case 1, the transmission control unit 13 updates the transmission history without retrying transmission (S6), and ends the process. In the case 2, the transmission control unit 13 returns the process to S <b> 2 in the super G3 mode and causes the FAX transmission unit 11 to retry transmission. In case 3, the transmission control unit 13 changes the transmission mode from the super G3 mode to the G3 mode (S8), returns the process to S2, and causes the FAX transmission unit 11 to retry transmission.

  As described above, the FAX transmitting apparatus 10 according to the first embodiment performs transmission retry by changing the transmission mode from the super G3 mode to the G3 mode when transmission fails due to the influence of the line. Therefore, even if the line quality is poor, the possibility of successful transmission increases.

  The transmission control unit 13 sets a limit number of transmission retries in advance, and causes the FAX transmission unit 11 to retry transmission until the limit number is reached.

  Also, even if the transmission control unit 13 changes the transmission mode from the super G3 mode to the G3 mode and performs transmission retry, if transmission fails, the transmission speed is reduced and the FAX transmission unit 11 is instructed for the second time or later. Retry transmission. At this time, the transmission speed is lowered to a preset minimum speed. This increases the possibility of successful transmission.

  In the above description, FAX transmission is initially performed in the super G3 mode, and when transmission fails, the transmission is retried after changing to the G3 mode. However, FAX transmission may be initially performed in the G4 mode, and if transmission fails, the transmission may be retried after changing to the G3 mode. In this case, the same effect as described above can be obtained.

FIG. 4 is a diagram illustrating an example of a hardware configuration of the FAX transmission apparatus 10.
As illustrated in FIG. 4, the FAX transmission apparatus 10 includes a CPU 911 (also referred to as a central processing unit, a central processing unit, a processing unit, an arithmetic unit, a microprocessor, a microcomputer, and a processor) that executes a program. The CPU 911 is connected to the ROM 913, the RAM 914, the LCD 901 (Liquid Crystal Display), the keyboard 902 (K / B), the communication board 915, and the magnetic disk device 920 via the bus 912, and controls these hardware devices. Instead of the magnetic disk device 920 (fixed disk device), a storage device such as an optical disk device or a memory card read / write device may be used. The magnetic disk device 920 is connected via a predetermined fixed disk interface.

  An operating system 921 (OS), a window system 922, a program group 923, and a file group 924 are stored in the magnetic disk device 920 or the ROM 913. The programs in the program group 923 are executed by the CPU 911, the operating system 921, and the window system 922.

The program group 923 stores software, programs, and other programs that execute the functions described as “FAX transmission unit 11”, “result reception unit 12”, “transmission control unit 13”, and the like in the above description. . The program is read and executed by the CPU 911.
In the file group 924, information such as “transmission data”, data, signal values, variable values, and parameters in the above description are stored as items of “database”. The “database” is stored in a recording medium such as a disk or a memory. Information, data, signal values, variable values, and parameters stored in a storage medium such as a disk or memory are read out to the main memory or cache memory by the CPU 911 via a read / write circuit, and extracted, searched, referenced, compared, and calculated. Used for the operation of the CPU 911 such as calculation / processing / output / printing / display. Information, data, signal values, variable values, and parameters are temporarily stored in the main memory, cache memory, and buffer memory during the operation of the CPU 911 for extraction, search, reference, comparison, calculation, calculation, processing, output, printing, and display. Is remembered.

In the above description, the arrows in the flowchart mainly indicate input / output of data and signals, and the data and signal values are recorded in a memory of the RAM 914, other recording media such as an optical disk, and an IC chip. Data and signals are transmitted online by a bus 912, signal lines, cables, other transmission media, and radio waves.
In addition, what is described as “to part” in the above description may be “to circuit”, “to device”, “to device”, “to means”, and “to function”. It may be “step”, “˜procedure”, “˜processing”. In addition, what is described as “˜device” may be “˜circuit”, “˜device”, “˜means”, “˜function”, and “˜step”, “˜procedure”, “ ~ Process ". That is, what is described as “˜unit” may be realized by firmware stored in the ROM 913. Alternatively, only software, hardware such as elements, devices, substrates, and wirings, a combination of software and hardware, or a combination of firmware may be used. Firmware and software are stored in a recording medium such as ROM 913 as a program. The program is read by the CPU 911 and executed by the CPU 911. That is, the program causes a computer or the like to function as the “˜unit” described above. Alternatively, the computer or the like is caused to execute the procedures and methods of “to part” described above.

  10 FAX transmission device, 11 FAX transmission unit, 12 result reception unit, 13 transmission control unit.

Claims (2)

A FAX transmission unit that performs FAX transmission in Super G3 mode;
A result receiving unit for receiving a result of FAX transmission performed by the FAX transmitting unit;
Wherein when the result result received by the receiver is shows the transmission failure, if the cause of the transmission failure indicating an error code that is sent not capable of receiving transmitted data, to terminate the processing to the FAX transmission unit, transmission If the error code indicates that the destination of the transmission is temporarily unable to receive transmission data, the FAX transmission mode is retransmitted to the FAX transmission unit while the FAX transmission mode remains in the super G3 mode. If the error code indicates that it is due to the influence of the above, the FAX transmission mode is changed from the super G3 mode to the G3 mode, the FAX transmission unit is retransmitted by FAX , the FAX transmission mode is changed, and the FAX transmission unit is changed to If the result of FAX transmission in the case of FAX transmission again indicates transmission failure, the transmission speed is reduced and the FAX transmission unit FAX transmitting apparatus characterized by comprising a transmission control unit for FAX transmission again. FAX transmission processing for performing FAX transmission in Super G3 mode;
A result reception process for receiving a result of the FAX transmission performed in the FAX transmission process;
Wherein the result reception process when a result of the received shows the transmission failure, if the cause of the transmission failure indicating an error code that is sent not capable of receiving transmitted data, terminates the process, the cause of the transmission failure transmission When the error code indicates that the destination is temporarily unable to receive transmission data, when the FAX transmission mode remains in the super G3 mode, FAX transmission is performed again, and the error code indicates that the cause of the transmission failure is due to the influence of the line When the FAX transmission mode is changed from the super G3 mode to the G3 mode and the FAX transmission is performed again , and the FAX transmission mode is changed and the FAX transmission is performed again, the FAX transmission result indicates a transmission failure. the dropped, FAX transmission, characterized in that to execute a transmission control process for FAX transmission to the computer again Program.

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