JP3313612B2 - A method of transmitting multiple pages in a facsimile machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method of transmitting a plurality of pages in a facsimile apparatus, and more particularly to a method of transmitting a plurality of pages in a facsimile apparatus performing communication in a group 3 mode.

[0002]

2. Description of the Related Art Conventionally, a facsimile apparatus generally extends a post message as a non-standard function during communication in a group 3 mode, sets the number of pages to be transmitted in the post message, and determines the page number of the post message. To notify the receiving terminal. In the communication of the conventional method shown in FIG. 3, the receiving terminal receives the post message (S32 to S33), and detects a missing page by comparing the number of FAX messages with the number of transmission pages notified in the post message. Then, an RTN response responds (S36).

For example, Japanese Patent Application Laid-Open No. 8-65439 of the prior art 1
In the “facsimile apparatus” of the publication, page number additional information indicating that page number information is added as a non-standard function is set in the non-standard function signal. The receiving-side facsimile apparatus compares the number of pages of the already received image data with the recognized page information to determine whether there is a missing page. Therefore, it can be determined whether the image data has been transmitted accurately.

Further, Japanese Patent Laid-Open Publication No.
No. 8 discloses a technique of always monitoring the number of transmitted pages in the G3 mode, and immediately retransmitting the missing page when a page missing occurs.

[0005]

However, the above-mentioned conventional example involves the following various problems. The first problem is that ITU-T Recommendation T. In the facsimile apparatus of No. 30, when performing transmission of a plurality of pages in the group 3 mode, a fax message of an intermediate or last page cannot be received, and a page missing may occur when only a post message is received.

The reason is that the receiving terminal receives only the post message without receiving the FAX message of the intermediate or last page, and if the received message is within T2 hours after transmitting the post message response of the previous page, the receiving terminal does Generally, it is determined to be a post message. In this case, the post message response is transmitted again and the procedure proceeds normally.

The second problem is that, in the facsimile apparatus according to the above-mentioned conventional example 1 or 2, the number of transmitted pages is expanded by expanding a post message as a method of detecting a missing page when a plurality of pages are transmitted. Is set. However, setting the number of transmission pages is a non-standard function, and therefore has a disadvantage of lacking versatility.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method of receiving a plurality of pages in a facsimile apparatus which detects a missing page when performing a plurality of pages in a standard manner.

[0009]

In order to achieve the above object, a method of transmitting a plurality of pages in a facsimile apparatus according to the present invention comprises a post message receiving step of receiving a post message at the time of receiving a FAX message in a group 3 mode. And post by the post message receiving process
After receiving the message, confirm the presence or absence of carrier detection and storage of the high-speed modem. If there is carrier detection and storage of the high-speed modem in the high-speed modem carrier detection and storage confirmation step, check whether a FAX message has been received. A FAX message reception presence / absence confirmation step of confirming the FAX message reception presence / absence confirmation step. If the result of the FAX message reception confirmation step is not received, a carrier detection / storage clearing step of clearing the carrier detection storage of the high-speed modem, High-speed modem in memory confirmation process
Carrier detection memory and FAX message
The result of the confirmation of the reception confirmation process has not been received
In the case of communication, it is determined that a page
(1) Carrier detection of high-speed modem by the detection memory clear process
After clearing the storage, there is a non-reception response step of responding that the FAX message could not be correctly received in the post message response, and the method is characterized by detecting a page missing and responding to the detection.

Furthermore, multiple message method of multiple pages in the facsimile apparatus includes a low speed modem carrier detector detecting the presence or absence of the low-speed modem carrier, slow model
In the detection of presence / absence of a modem carrier, the process proceeds to a post message receiving step if detected, and if not, a high speed modem carrier may be detected and a FAX message receiving process may be executed.

Furthermore, the method of transmitting a plurality of pages in the facsimile apparatus described above includes a T2 time elapse checking step of checking the elapse of a predetermined time T2 when no low-speed modem carrier is detected. Has a predetermined time T2
If a high-speed modem carrier is detected before the time elapses, a FAX message reception process is executed, and a predetermined time T
If no high-speed modem carrier is detected within the time period of 2, the subsequent processing may be interrupted.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a facsimile apparatus according to an embodiment of the present invention; Referring to FIGS. 1 and 2, there is shown an embodiment of a method for transmitting a plurality of pages in a facsimile apparatus of the present invention.

FIG. 1 shows a first embodiment of a method of transmitting a plurality of pages in a facsimile apparatus according to the present invention.
9 is a flowchart at the time of a FAX message receiving operation in the group 3 mode.

The method of transmitting a plurality of pages in the facsimile apparatus according to the present embodiment has a storage means for storing whether a high-speed modem detects a carrier and whether or not a FAX message is received during a FAX message receiving operation in the group 3 mode. ing.

Next, the operation of the first embodiment will be described with reference to FIG.
This will be described with reference to FIG. The method of transmitting a plurality of pages in the facsimile apparatus according to the present embodiment includes a step S
After receiving the post message of No. 11, it is confirmed whether or not carrier detection and storage of the high-speed modem are performed (S12).

If there is no carrier detection and storage of the high-speed modem at step S12, it is determined that a new page reception operation is not performed, and thereafter, the operation is performed on already received FAX messages. Step S12
If there is a carrier detection storage of the high-speed modem, it is determined that a new page receiving operation has been performed, and it is confirmed whether or not a FAX message has been received (S13). Step S1
If the FAX message has been received in step 3, the image quality of the newly received FAX message is checked (S14). If the image quality is good, the carrier detection memory of the high-speed modem is cleared to set the carrier undetected memory. (S15), normal reception is responded by a post message response (S17).

If the fax message has not been received in step S13, it is determined that the fax message of the new page has not been correctly received, and the carrier detection storage of the high-speed modem is cleared to set the carrier non-detection storage state (S1).
6) Respond that the FAX message could not be received correctly in the post message response (S18).

FIG. 2 shows a second embodiment of a method for transmitting a plurality of pages in a facsimile apparatus according to the present invention.
9 is a flowchart at the time of a FAX message receiving operation in the group 3 mode.

A method of transmitting a plurality of pages in a facsimile apparatus to which the second embodiment shown in FIG. 2 is applied is a method of detecting a carrier of a high-speed modem when detecting a carrier of a high-speed modem during a FAX message receiving operation in group 3 mode. (S213), and a storage unit (S215, S216, S217) for storing whether a FAX message has been received after the FAX message reception process.

Next, an operation example of the second embodiment will be described with reference to FIG.
This will be described with reference to FIG. Referring to FIG. 2, in the FAX message receiving operation in the group 3 mode, when the carrier of the high-speed modem is detected (S212), the fact that the carrier of the high-speed modem is detected is stored in a random access memory or the like ( S213), and proceeds to the FAX message receiving process (S214). At the end of the FAX message reception process due to the carrier detection cutoff of the high-speed modem, the presence or absence of the reception of the FAX message is confirmed (S215) and stored (S216, S217).

Detecting the carrier of the low-speed modem (S2
2) At the time of receiving the post message (S23), it is checked whether or not the high-speed modem detects the carrier (S24). If no carrier is detected by the high-speed modem in step S24,
Judging that a new page has not been received,
Thereafter, the operation is performed for the already received FAX message. If carrier detection by the high-speed modem is detected in step S24, it is determined that a new page reception operation has been performed, and it is confirmed whether a FAX message has been received (S2).
5).

If the FAX message has been received in step S25, the image quality of the newly received FAX message is checked (S26). If the image quality is good, the carrier detection storage of the high-speed modem is cleared and no carrier is detected. The storage state is set (S27), and the MCF is transmitted as a post message response to respond normal reception (S29).

If the fax message has not been received in step S25, it is determined that the fax message of the new page has not been correctly received, and the carrier detection storage of the high-speed modem is cleared to set the carrier non-detection storage state (S2).
8), send RTN in post message response and fax
It responds that the message could not be received correctly (S210). Step S21 is a processing entrance at the time of transmission of a fax message receiving operation. Step S
211 is ITU-T Recommendation T.211. This is the monitoring process for the T2 time specified in 30.

According to the above embodiment, the method of transmitting a plurality of pages in the facsimile apparatus stores the presence / absence of the carrier detection of the high-speed modem and the presence / absence of the reception of the FAX message when the FAX message is received in the group 3 mode. Thereafter, if the carrier detection of the high-speed modem is detected and the FAX message is not received at the time of receiving the post message, it is determined that a page is missing, and the fact that the FAX message could not be received is notified by the post message response. .

In the FAX message receiving operation in the group 3 mode, whether or not a new page receiving operation has been performed is stored depending on whether or not a carrier has been detected by the high-speed modem. Therefore, when a post message is received, it can be determined whether the message is a post message for the previous page or a post message for a new page.

Therefore, when the post message is received, if the FAX message is not received with the carrier detection of the high-speed modem, it can be determined that the FAX message of the new page has not been correctly received.

The above embodiment is an example of a preferred embodiment of the present invention, but the present invention is not limited to this, and various modifications can be made without departing from the gist of the present invention.

[0028]

As is apparent from the above description, the method of transmitting a plurality of pages in the facsimile apparatus of the present invention receives a post message at the time of receiving a FAX message in the group 3 mode, and performs a high speed operation after receiving the post message. The presence / absence of carrier detection of the modem and the presence / absence of FAX message reception are stored. In the carrier detection / FAX message reception presence / absence storage, if the high-speed modem detects the carrier and does not receive the FAX message, it is determined that a page has been missed.
A post message response notifies that the AX message could not be received.

Therefore, according to the above procedure, when a post message is received, the fax is detected with the carrier detected by the high-speed modem.
If no message has been received, F
By responding that the AX message could not be received correctly, the transmitting terminal can retransmit the page or interrupt the procedure. As a result, it is possible to prevent a missing page of a received page when a plurality of pages are transmitted.

The above-described function of preventing a page from being missed in a received page solves the problem within the standard procedure of the group 3 mode, and does not require a specific function for the transmitting terminal. That is, it can be realized by having a function only on the receiving terminal side. As a result, it is possible to prevent a page from being missed regardless of the function of the partner transmission terminal.

[Brief description of the drawings]

FIG. 1 is a flowchart illustrating a method of receiving a FAX message in a group 3 mode according to a first embodiment of a method of transmitting a plurality of pages in a facsimile apparatus according to the present invention.

FIG. 2 is a flowchart showing a second embodiment of a method for transmitting a plurality of pages in a facsimile apparatus according to the present invention, which is a FAX message receiving operation in a group 3 mode.

FIG. 3 is a flowchart of a conventional facsimile apparatus at the time of a FAX message receiving operation in a group 3 mode in a method of transmitting a plurality of pages.

[Explanation of symbols]

 S11 Post message reception S12 High-speed modem carrier detection storage? S13 Fax message received? S14 Good image quality? S15 Clear high-speed modem carrier detection storage S16 Clear high-speed modem carrier detection storage S17 Normal reception response S18 Non-reception response

Continuation of front page (72) Inventor Kazuki Miyazaki 1-403 Kosugi-cho, Nakahara-ku, Kawasaki-shi, Kanagawa Prefecture NEC Telecom System Corporation In-house (56) References JP-A-64-13867 (JP, A) JP-A-8-116421 (JP, A) JP-A-8-251382 (JP, A) JP-A-62-39964 (JP, A) JP-A-8-149268 (JP, A) JP-A-8-65439 (JP, A) A) (58) Field surveyed (Int. Cl. ⁷ , DB name) H04N 1/32 H04N 1/00 106

Claims (3)

(57) [Claims] 1. A post message receiving step of receiving a post message at the time of receiving a FAX message in a group 3 mode, and the post message receiving step is performed by the post message receiving step.
A high-speed modem carrier detection and storage confirming step of confirming whether or not the high-speed modem has carrier detection and storage after receiving the high-speed modem. a FAX message receiving existence confirmation step of confirming the presence or absence of the case FAX message receiving existence confirming step of confirming the result of the FAX message unreceived includes a carrier detection memory clearing step of clearing the carrier detection storage of high-speed modems, the High speed modem in high speed modem carrier detection memory check process
Carrier detection memory and the FAX message
FAX message is the result of the message reception confirmation process
If the page has not been received, it is determined that a page
The carrier detection memory clear process allows the high-speed modem
After clearing the rear detection memory, there is provided a non-reception response step of responding that the FAX message could not be correctly received in a post message response, and detecting a missing page and responding to the detection. A method of transmitting a plurality of pages in a facsimile machine. 2. The method of transmitting a plurality of pages in a facsimile apparatus, further comprising a low-speed modem carrier detection step of detecting the presence or absence of a low-speed modem carrier. 2. The method according to claim 1, further comprising the step of: proceeding to the post message receiving step, detecting a high-speed modem carrier and executing a FAX message receiving process if no detection is made. 3. The method of transmitting a plurality of pages in the facsimile apparatus, further comprising a step of checking a lapse of a predetermined time T2 when the low-speed modem carrier is not detected, If the high-speed modem carrier is detected within a predetermined time T2, the FAX message receiving process is executed.
3. The method according to claim 2, wherein if the high-speed modem carrier is not detected within the lapse of the predetermined time T2, the subsequent processing is interrupted.