JPH0955841A - Flat bed scanner type facsimile equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically and quickly execute a retransmission processing by performing the read operation of a set original document again when the image data of the original are not normally transmitted. SOLUTION: The image data of the original document set at a read position are transmitted through a communication channel L by a facsimile control part 2. At the time of receiving a negative response signal (RTN) from a reception side, by a command from a signal processing part 1, and image read part 4 performs the read operation of the set original again. Then, without performing an operation from a key operation part 6, the image data are automatically retransmitted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flatbed scanner type facsimile apparatus configured to read and scan a document set at a predetermined reading position.

[0002]

2. Description of the Related Art Recently, an ADF has been used in a facsimile machine.
Those having an (automatic document feeding) function are widely spread. According to this facsimile apparatus, since the document can be automatically fed, the labor can be saved and the facsimile can be quickly transmitted. However, the ADF function cannot be used to directly send the image data of a thick original such as a book. Therefore, the original is set at a preset reading position, and then scanning is performed to read the image data. A flatbed scanner type facsimile apparatus for transmitting is preferably used.

The operation of these facsimile machines is as shown in FIG. 4, and although the image data (PIX) is transmitted, normal data cannot be transmitted due to noise on the line, and the response is RTN (return). If the signal is a training negative signal), the processing ends abnormally, and in this case, a message indicating an abnormal image quality of the transmitted image is displayed to prompt retransmission.

[0004]

However, in the above-mentioned conventional facsimile apparatus, when the image data cannot be transmitted and is retransmitted, the facsimile apparatus having the ADF function needs to send the original again to be read. On the other hand, in the flatbed scanner type facsimile machine, the original remains set at the reading position, so it can be retransmitted by re-reading it.However, after confirming the message, key operation is performed or the call is issued again. It was necessary to make a resend and resend.

Therefore, according to the present invention, when the image data of the original document cannot be transmitted normally, the original document that has been set is read and scanned again, so that the resending process can be executed automatically and quickly. It is an object to provide a facsimile machine.

[0006]

A flatbed scanner type facsimile apparatus according to claim 1 proposed for achieving the above object transmits image data of a document set at a predetermined reading position. After that, when a negative response signal is received from the receiving side, the set original is read and scanned again, and the image data is retransmitted. This is convenient because it is possible to automatically retransmit without key operation or the like. As the negative response signal, RTN (retraining negative signal) or the like of the facsimile communication procedure signal is used.

A flatbed scanner type facsimile apparatus according to a second aspect of the present invention has a full-duplex modem, and while transmitting image data of an original document set at a predetermined reading position, When a negative response signal is received from the receiving side, the set document is read and scanned again, and the image data is retransmitted. Since the full-duplex modem is used here, bidirectional facsimile communication is possible at the same time, and the original can be read again from the beginning and retransmitted even during transmission.

A flatbed scanner type facsimile apparatus according to a third aspect of the present invention is the flatbed scanner type facsimile apparatus according to the first or second aspect of the present invention.
When the number of times the image data of the document set at the reading position is retransmitted exceeds a predetermined number of times, the communication speed is reduced and the image data retransmission is continued. Here, the predetermined number of times is set in advance to three times or the like, and when the number of retransmissions exceeds the predetermined number of times, the transmitter side performs a fallback of the modem to reduce the error occurrence rate in the subsequent communication. To ensure that the transmission ends normally. The transmission may be terminated by disconnecting the line instead of decreasing the communication speed.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an example of the internal configuration of a flatbed scanner type facsimile apparatus F according to the present invention. The facsimile apparatus F includes a modem for the signal processing section 1 including a CPU and the like, and a facsimile communication control section 2 and RO for communicating with an external facsimile apparatus or the like via a communication line L.
An image reading section 4 for reading and scanning a document set in advance at a reading position, including a storage section 3 configured by M3a and RAM3b, a movable reading means, and a printout for printing an image on a recording sheet. The unit 5, a key operation unit 6 including various operation keys, a display unit 7 including a liquid crystal display, and the like are connected.

Of the above-mentioned units, the facsimile communication control unit 2 includes a circuit for mutual transmission of protocol signals,
A line control unit and the like for controlling line connection with the communication line L are provided. Next, the basic operation of the facsimile apparatus F according to the present invention will be described with reference to FIG.

In the facsimile apparatus F of the present invention, real-time transmission is performed, and after the original is set at a predetermined reading position on the contact glass surface, the key operation unit 6 is operated to set the telephone number of the other party. Enter and instruct to start transmission. Then, a handshake is performed with the receiving side to read and scan the document and at the same time transmit image data (1) to (8). On the other hand, when the negative response signal (RTN) is received from the receiving side (9), the set original is read and scanned again, and the image data is retransmitted (10) to (13). As a result, the image data can be automatically retransmitted without any operation after receiving the negative acknowledgment signal.

This operation was performed when the facsimile communication control unit 2 was equipped with a modem for performing half-duplex communication. In the facsimile apparatus F of the present invention, the facsimile communication control unit 2 is equipped with a full-duplex modem. In this case, since bidirectional communication is possible at the same time, a negative response signal can be received even during transmission. At this time, when a negative response signal is received from the receiving side, the set original is read and scanned again from the beginning, and the image data is retransmitted. According to this, retransmission can be executed even during transmission, so that the entire communication time can be shortened as compared with the case of the half-duplex communication.

As described above, when the negative response signal is received from the receiving side, the image data is retransmitted. When the number of times of retransmission exceeds the predetermined number of times (for example, 3 times) set in advance in the RAM 3b or the like. , Reduce the communication speed and retransmit the image data. This reduces the probability that an error will occur in the image data to be transmitted, and reduces the negative response signal received from the receiving side.

To change the communication speed, the current speed may be gradually reduced. However, if a negative response signal is received even during retransmission immediately after the communication speed is reduced, the communication speed may be immediately reduced to the next stage,
The method is not limited. Next, the operation described above will be described using the flowchart shown in steps 100 to 107 of FIG.

In this figure, reading scanning of a document (step 1
02) and image data transmission (step 103) are shown separately, but strictly speaking, data conversion and transmission are repeated every several lines of reading scanning, and the image data of the set original is received. Have been sent to. When the number of retransmissions exceeds a predetermined number, the modem fallback is performed (steps 105 and 106), but the communication line L
May be disconnected to end the transmission process (step 1
07).

[0016]

As can be understood from the above description, according to the flatbed scanner type facsimile apparatus according to the first to third aspects of the present invention, the negative response signal is received for the transmitted image data. At this time, the set original can be read and scanned as it is and automatically retransmitted. Further, when retransmitting, there is no need to perform a key operation or the like, and it is not necessary to send and receive a protocol signal before retransmitting, so that the time required for retransmitting can be shortened as compared with a conventional facsimile apparatus.

In particular, according to the second aspect, since it is possible to shift to the retransmission processing even during the transmission of the image data for one page, the communication time is shortened and the communication charge associated therewith can be saved. Further, according to claim 3, when the normal transmission is not possible even if the retransmission is performed several times, the transmission is continued after the communication speed is lowered, so that the possibility of the normal transmission is increased, and the retransmission is wastefully repeated. Can be prevented.

[Brief description of drawings]

FIG. 1 is a block diagram showing an example of an internal configuration of a flatbed scanner type facsimile apparatus of the present invention.

FIG. 2 is a diagram illustrating an example of a basic operation of the flatbed scanner type facsimile apparatus of the present invention.

FIG. 3 is a flowchart showing an example of a basic operation procedure of the flatbed scanner type facsimile apparatus of the present invention.

FIG. 4 is a diagram illustrating an example of a basic operation of a conventional facsimile apparatus.

[Explanation of symbols]

 F: Flatbed scanner type facsimile device 1 ... Signal processing unit 2 ... Facsimile communication control unit 3 ... Storage unit 4 ... Image reading unit 5 ... Print output unit 6 ... Key Operation unit 7 ... Display unit L ... Communication line

Claims (3)

[Claims] 1. When a negative response signal is received from the receiving side after transmitting image data of a document set at a predetermined reading position, the set document is read and scanned again to obtain the image. A flatbed scanner type facsimile machine that retransmits data. 2. A flatbed scanner type facsimile apparatus having a full-duplex modem, wherein a receiving side receives an image from an image data of an original document set at a predetermined reading position. A flatbed scanner type facsimile apparatus characterized in that when a negative response signal is received, the set original is read again and scanned, and the image data is retransmitted. 3. The flatbed scanner type facsimile apparatus according to claim 1, wherein when the number of times of retransmitting the image data of the document set at the reading position exceeds a predetermined number, the communication speed is lowered. A flatbed scanner type facsimile machine characterized by continuously retransmitting image data.