JPS6398273A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To prevent the useless holding of a telephone line in occurring abnormality in communication by counting the quantity of image signals, and automatically stopping the communication at the time when the counted value exceeds a reference value prescribed beforehand. CONSTITUTION:In an receiving operation, a decoding part 5 decodes signals in the unit of scanning line, at the same time supplies a signal to a counter 2 at every segment of a scanning line, and the counter 2 counts the signals. In a decision part 3, the reference value for the total number of scanning lines of a reception image in one communication is set preliminarily, and the part 3 compares the counted value with the reference value, and decides it as an abnormal communication when the counted value exceeds the reference value, and informs a equipment control part 4 of the abnormality. Receiving this abnormality information, the control part 4 stops reception action, and releases a telephone line. In a transmission action, a coding part 6 encodes as well as supplies the segmenting signal of a scanning line to the counter 2. The actions thereafter are the same as those for the reception.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to facsimile devices.

[Conventional technology]

In conventional facsimile machines, when transmitting, the image signal read from the document is encoded in units of scanning lines and sent out sequentially, and when receiving, the input encoded image signal is encoded every scanning line and recorded sequentially. As such, the amount of image signals was not measured.

[Problem that the invention seeks to solve]

The conventional facsimile machines mentioned above are not configured to measure the amount of image signals, so even if an abnormality occurs in the sending operation of the device or an abnormality occurs in the recipient's device during reception, the image signals cannot be sent. Otherwise, the telephone line will continue to be received, and the telephone line will continue to be connected even though there is a communication error unless the operator performs an interruption process.

[Means for solving problems]

The facsimile apparatus of the present invention includes a counter that counts the amount of image signals, and a determination section that compares the counted value with a preset reference value and determines that the comparison result is abnormal when the counted value exceeds the reference value. It consists of:

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram of one embodiment of the present invention.

In Fig. 1, 1 is a modem that modulates and demodulates encoded image signals at a predetermined transmission rate, 2 is a counter that counts the amount of image signals, and 3 is a comparison between a preset reference value and the counted value of counter 2. A determining section detects an abnormality based on the result, 4 is a device control section for transmission and reception, 5 is a decoding section, 6 is an encoding section, 7 is a recording section, and 8 is a reading section. Note that the solid lines between each block shown in Figure 1 are signal lines, and the solid lines between each block are signal lines.
The dashed dotted line indicates the control signal line.

First, the reception operation of this embodiment will be explained.

In Figure 1, the encoded image signal is transmitted from the telephone line to the modem 1.
The signal is input to the modem 1, demodulated by the modem 1, decoded by the decoding section 5, and recorded by the recording section 7 as a recording section.

At this time, the decoding unit 5 decodes each scanning line and at the same time supplies a signal for each segment of one scanning line to the counter 2,
The counter 2 counts signals at the intervals of one scanning line.

The total number of scanning lines of one received image is set in advance in the determination unit 3 as a reference value, and the determination unit 3 compares the counted value and the reference value, and when the counted value becomes larger than the reference value, it starts communication. It is determined that there is an abnormality, and the device control unit 4 is notified of the abnormality.

Upon receiving the abnormality notification from the determination unit 3, the device control unit 4 stops the reception operation and opens the telephone line.

The counter 2 clears the count value when it finishes receiving one message and receives the communication procedure signal.

Next, the transmission operation of this embodiment will be explained.

The image signal read by the reading section 8 is encoded in units of scanning lines by the encoding section 6, modulated by the modem 1, and sent onto the telephone line.

At this time, the encoding unit 6 supplies a signal delimiting one scanning line to the counter 2 at the same time as encoding.

Similarly to the reception operation described above, when the determination unit 3 detects that the count value exceeds the reference value, the determination unit 3 determines that the reading unit 7 is abnormal, determines that there is a communication abnormality, and notifies the device control unit 4. .

Upon receiving the communication abnormality notification, the device control unit 4 stops the transmission operation and automatically opens the line.

Note that the counter 2 is cleared when the reading unit 7 finishes reading the original.

As explained above, in this embodiment, the number of scanning lines is used to measure the amount of image signals, but this value may be any value that can be used to determine that there is a communication abnormality in the length of the transmitted document and the length of the received record. The present invention can be applied even if the number of bits is

〔Effect of the invention〕

As explained above, the present invention counts the amount of image signals during transmission and reception, determines whether or not there is a communication abnormality based on the counted value, and automatically starts the transmission or reception operation immediately when it is determined that there is a communication abnormality. By interrupting the telephone line, it is possible to prevent the telephone line from continuing to be held due to abnormal transmission or reception of image signals, which has the effect of improving line utilization efficiency.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of one embodiment of the present invention. 1...modem, 2...counter, 3.
...Judgment unit, 4...Device control section, 5...
...Decoding section, 6... Encoding section, 7...
. . . Recording section, 8 . . . Reading section.

Claims (1)

[Claims] The method further includes: a counter that counts the amount of the image signal; and a determining unit that compares the counted value of the counter with a preset reference value and determines that the counted value is abnormal when the comparison result exceeds the reference value. A facsimile machine with special features.