JPH0321164A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To make it unnecessary for an operator to monitor the transmission of a terminating facsimile equipment (FAX) up to its end by informing abnormality without executing operator's operation when the picture quality of decoded image data is defective. CONSTITUTION:When a normal line is decided by a picture quality checking circuit 7 or when the number of error lines does not exceed a fixed value even if an error in a line is decided, the processing of the succeeding line is executed without generating any trouble. However, when an error line is decided and the number of error lines exceeds the fixed value, the picture is decided as defective picture quality. ln this case, an abnormality informing message forming circuit 8 allocates the telephone number of a terminating FAX, its own station name, its own station number, time and the destination to the prescribed positions of an abnormality informing message to form an abnormality informing message. The formed abnormality informing message is compressed and coded by a data compressing/extending circuit 3 and sent to the terminating FAX by a communication control circuit 4.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Application of Industry-L The present invention relates to a facsimile apparatus that temporarily stores received image data in a code memo.

(Example) Conventional technology In general, in 63 facsimile machines, if the signal is not correctly decoded by the receiving device, the received image quality deteriorates, which is undesirable. Therefore, every time a signal for -line is decoded, a detection circuit is provided to detect whether or not one line has been decoded normally. The value is set to P! When the value reaches L, the receiving device sends an R T N (R
ive) The signal is sent to the transmitting side device, and the transmitting measuring device that receives the R T N signal is configured to warn of retransmission of the document by lighting a poor communication lamp or the like.

In addition, in the G1 facsimile machine K, the transmitter's C
I) E. ,' C I) If the image quality is poor for P B, the receiving device sends an R D P B N signal to indicate that the page could not be correctly received. The system is being ordered to notify the side equipment. This type of technology is detailed in, for example, Japanese Patent Laid-Open No. 52-9312 and Japanese Patent Laid-Open No. 53-83513. At the decoding facsimile machine, the line is already disconnected at the time the image data is decoded, so if the image quality is poor, operator action is required to notify the other party's facsimile machine. .

(2) Means for Solving the Problems The present invention provides a facsimile machine that stores received image data in a code memory and later decodes the image data in a data compression/expansion circuit. an image quality check circuit that determines whether the image quality is good or defective; and an abnormality notification text creation circuit that creates an abnormality notification text, and when the image quality check circuit determines that the image quality is poor, The facsimile apparatus is characterized in that the abnormality notification text created by the user is compressed and encoded by the decoder compression/expansion circuit and sent to the other party's facsimile machine.

(E) Effect According to the present invention, create an abnormality notification message l! 1] If the received image data is determined to have poor image quality when it is later decoded,
It is possible to notify the other party's facsimile machine that the received image data is defective without any intervention by an operator.

(1) Embodiment FIG. 1 is a block diagram showing a circuit groove of a facsimile apparatus according to the present invention.

In FIG. 1, (1) is a main control circuit that controls the entire apparatus of the present invention, and specifically utilizes a microprocessor. This main control circuit (1) includes a reading circuit (2), a data compression/expansion circuit (3), and a communication control channel (4), which will be described later.
), recording circuit (5), code memory (6), image quality check circuit (7), abnormality notification text creation circuit (8), etc.

The reading circuit (2) is constituted by a scanner using, for example, a one-dimensional line sensor, and its maximum readable size is determined by the effective width of the line sensor. The document image information read by this reading circuit (2) is transferred 3 4 to a data compression/expansion circuit (3).

The data compression/expansion circuit (3) compresses and encodes image data obtained as dot data, for example, line by line, for transmission, or decodes received image data (compression code).

The code memory (6) is composed of a hard disk, an f-sk, etc.
Accumulate the received image data.

The communication control circuit (4) controls the input and output of signals to and from the communication line (9).

The recording circuit (5) includes, for example, a laser printer, a thermal printer, etc., and a printing element scans in the main scanning direction and moves the recording paper in a direction perpendicular to this, that is, in a sub-scanning direction.

The image quality check circuit (7) checks the image quality of the image data decoded by the data compression/expansion circuit (3).

The abnormality notification text creation circuit (8) has a text developed into image data in advance as shown in FIG. 3, and information such as destination, sender, time, etc. is developed into image data at predetermined positions of this text. Then, as shown in FIG. 2, the created abnormality notification text is compressed and encoded by the data compression/expansion section (3), and sent to the other party's facsimile machine from the communication control circuit (4).

In such a circuit-purchased facsimile device, when image data received from the other party's facsimile device is decoded, the image quality of the decoded image data is poor.
This will be explained according to the flowchart in the figure.

When you start receiving, the other party's facsimile machine (sender)
The reception of image data (compressed code) is started from , and this image data is stored in the code memory (6) via the communication control circuit (4).

At the end of reception, it is assumed that the image data has been received correctly, and a normal reception signal (for example, G3 FAX
So, MCF. In G4FAX, RDEP, etc.) is sent to the other party's facsimile machine. As a result, the communication itself ends normally.

Thereafter, the image data stored in the code memory (6) is decoded line by line by the data compression/expansion circuit (3), and the decoded line of both image data is recorded by the recording circuit (5). Further, if the circuit (5) described in 1-1 is not usable during copying, it is not recorded.

Next, an image quality check circuit (7) checks the image quality of one line of image data. In this embodiment, when the number of erroneous lines exceeds a certain value, the image quality is changed by determining that the image quality is poor.

I-L determined to be a normal line by the image quality check circuit (7)
If the number of incorrect lines does not reach a fixed value, there is no problem and the process moves on to the next line, but it is judged as an incorrect line and the line is judged to be an incorrect line. If the number of erroneous lines is constant (IIi or more - 12), it is determined that the image quality is poor.

In this case, the abnormality notification circuit (8) is the phone number of the other party's facsimile machine (for example, in the TSI for G3 FAX,
In G4FAX, the I)TE address part of the network layer or the session reference information of the session layer, or obtained from layer 2 of the D channel when using an ISDN network), own station name and own station number (main control (obtained from within the circuit (1)), one time (obtained the image stored in the code memory (6) overnight), and the destination (obtained from the communication system all circuit (1)). As shown in FIG. 3, it is applied to a predetermined position of the abnormality notification text, and the abnormality notification text is written as f1: as shown in FIG.

The data compression/decompression circuit (3)
The data is compressed and encoded by the communication control circuit (4) and sent to the downstream facsimile machine.

(G) Effects of the Invention As is clear from the above description, the present invention stores received image data in a code memory and later restores the image data in a data compression/expansion channel. If the image quality of decoded image data is poor in facsimile machines, which are becoming increasingly popular, it is possible to notify an abnormality without operator operation.

Furthermore, the abnormality notification remains as a hard copy on the other party's facsimile device. There is no need for an operator to monitor the transmission end at the other party's facsimile machine.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a block diagram showing an embodiment of the present invention, 7 8 Figs. It is a flow diagram. (1)・Control circuit, (2)・Reading circuit, (3)・
・・Data compression/expansion circuit, (4)・Communication control circuit, (5)
・Recording circuit. (6) Code memory, (7) Image quality check circuit, (8) Abnormality notification text creation circuit.

Claims (1)

[Claims] (1) In a facsimile machine that stores received image data in a code memory and later decodes the image data in a data compression/expansion circuit, an image quality check circuit that determines whether the image quality of the decoded image data is good or bad. and an abnormality notification text creation circuit that creates an abnormality notification text, and when the image quality check circuit determines that the image quality is poor, the abnormality notification text created by the abnormality notification text creation circuit is compressed into data. A facsimile device that compresses and encodes the data in an expansion circuit and sends it to the other party's facsimile device.