JPS62216575A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To improve the effective use of a sheet paper by detecting the rate of the black information of a picture signal, deciding that a picture signal line is effective when the rate is at a constant value or above, and recording a next page only when it remains at the constant value or above at the time of completing the receiving. CONSTITUTION:The device is equipped with a black information detecting circuit 61 to detect the rate of black information in respective scanning lines stored in a buffer memory 60 and decide that it is decided to be an effective picture signal line when the black information remains at a constant value or above, a counting means to count the number of above-mentioned effective picture signal lines and a means to detect the number of picture signal lines remaining at the memory 60. At the time of completing the recording of respective pages, the prescribed value or above of the picture signal line remaining at the memory 60 exists and the constant value or above of the effective picture signal line remains, the remaining picture signal lines are recorded into the recording paper of the next page, and when the remaining picture signal line are less than the prescribed value and the effective picture signal lines are less than the constant value, the remaining picture signal lines are abolished.

Description

[Detailed Description of the Invention] [Objective of the Invention 1 (Industrial Application Field) The present invention relates to a facsimile machine, and more particularly, relates to recording control of a facsimile machine that uses sheet paper cut into a standard size as recording paper. .

(Prior Art) Generally, roll paper is used as recording paper for facsimile machines, and the recording paper is automatically cut according to the size of an input original or a transmitted original. Recently, however, with the spread of facsimile machines, there has been a strong desire to use plain paper as recording paper, and laser beam printers and thermal transfer printers have come to be used as the recording section of facsimile machines. However, the recording paper used in this case is different from conventional roll paper;
Similar to 1, there are many sheets of paper cut into standard sizes in advance.

On the other hand, facsimile machines use a real-time scanning method as a reading method, and the length of the original is usually not determined until the reading of the original is completed.

Therefore, when the image signal of a document read using the real-time scan method is recorded and output on a recording section using sheet paper, if the image signal exceeds the specified size, a method has been adopted in which the image signal is recorded on the next page. ing.

(Problems to be Solved by the Invention) However, since the document is made of paper, its shape expands depending on environmental conditions, and the reading length of the facsimile machine itself in the DJ scanning direction also varies slightly. Therefore, when using sheet paper, if there is an expansion or contraction in the noise of the original received from the other party's facsimile machine, or if there is expansion or contraction in the noise of the original read by the reading unit, the original will be Despite the fact that it was a page, there was a problem that the records were placed on two pages. This can be solved by stopping the recording operation if the received facsimile image signal exceeds the recording range of the sheet paper, but on the other hand, if the original is truly longer than the recording range of the sheet paper, Another problem arises in that recording will be forcibly stopped if the

The present invention was made to solve these problems, and only when the length of the document is truly longer than the recording range of the sheet paper, it is recorded on the next page, making effective use of the sheet paper. It is an object of the present invention to provide a facsimile device that can perform the following functions.

[Structure of the Invention] (Means for Solving the Problem) The present invention detects the proportion of black information in a facsimile image signal stored in a buffer memory in units of scanning lines, and detects the proportion of black information in a facsimile image signal stored in a buffer memory, and detects the proportion of black information when the proportion of black information exceeds a certain value. If so, a counting means for counting the scanning line as an effective image signal line and a means for detecting the number of facsimile image signal lines remaining in the buffer memory are provided, and the number of facsimile image signal lines remaining in the buffer memory is provided at the end of each page recording. When the number of facsimile image signal lines exceeds a predetermined value 83 and when the effective image signal line remains at a predetermined value or more, the remaining facsimile image signal line is recorded on the recording paper of the next page, and the facsimile image remaining in the buffer memory is recorded. If the signal line is less than a predetermined value and the effective image signal line is less than a certain value, the remaining facsimile image signal line is discarded.

(For fr) The proportion of black information in the received facsimile image signal is detected in units of scanning lines. As a result, if the ratio of black information is above a certain value, the scanning line is determined to be a valid image signal line and is recorded on the recording paper. Then, at the end of reception, the effective image signal line is equal to or higher than a certain value (for example, 1 m
If the length of the document remains (approximately 500 yen), it is recorded on the next page, and if it is less than a certain value, it is discarded as it is assumed that the document has expanded or contracted or there has been a reading error in the reading section.

Therefore, only when the length of the document is truly longer than the recording range of the sheet paper is recorded on the next page.

(Embodiment) FIG. 1 is a block diagram showing an embodiment of the present invention, in which a transmission section 111 transmits and receives facsimile image signals between the main control section 1 and the other party's facsimile device via a circuit 4m2.
1 copy 3, a scanner 4 that reads the original image, a printer 5 that records the original image read by the scanner 4 or an image received from the other party's facsimile machine, and a signal of the original image read by the scanner 4. It is comprised of an image signal processing section 6 that encodes and transmits the image signal to the line 15i12 via the transmission control section 3, and also decodes the image signal received from the line 2 and transfers it to the printer 5.

Of these, the image signal processing section 6 includes a buffer memory 60 that temporarily stores image signals of scanning lines of about 10 mm in J3 in the WJ scanning direction of the original, and detects the proportion of black information in each scanning line. A black information detection circuit 61 is provided, which determines that the scanning line is a valid image signal line when black information exists, for example, 5% or more.

FIG. 2 is a flowchart showing the operation of the image signal processing section 6 when transmitting a facsimile image signal to the printer 5, in which the input line counts the number of input lines of the facsimile image signal received from the scanner 4 or the other party's facsimile device. an output line number counter that counts the number of output lines of the facsimile image signal transferred to the printer 5; an image signal line number counter that counts the number of lines of the facsimile image signal temporarily stored in the buffer memory 60; A valid line number counter that counts the number of valid image signal lines in which 5% or more of black information exists in the facsimile image signal is reset in an initial state such as when the power is turned on.

Further, an effective line check flag for inspecting an effective image signal line is turned on, and a recording start flag for starting recording is turned off (step 10).
.

Next, when there is an image signal input request from the transmission control IL1 section 3 or the scanner 4, the image signal is stored line by line in the buffer memory 60, and in parallel with the storage operation, the proportion of black information is is counted by the black information detection circuit 61. (Steps 11, 12). Thereafter, the input line number counter and the image signal line number counter are counted up by "1" (step 13).

Next, it is determined whether or not the reception of image signals for one page has been completed. The proportion of black information in the image signal is detected (steps 14→16→17).

As a result, if the ratio of black information is 5% or more (step 18), it is determined that the image signal stored in the buffer 1 memory 6o corresponds to an effective double image signal line, and the effective line number counter is counted up. (Step 19).

Next, it is determined whether the recording start flag is on or not (step 20), but since this flag is turned on when both signals of the specified line or higher are stored in the buffer 1 memory 60, is off. Therefore, once the effective line number counter has been counted up, the image signal line number counter is next checked (step 21), and if the count value is equal to or greater than the specified value (step 22), it is stored in the buffer memory 60. A recording start flag is turned on in order to record image signals of a prescribed number of lines.

At the same time, the valid line check flag is turned off (step 23).

Next, the image signal is read line by line from the buffer memory 60 and sequentially transferred to the printer 5, and an output line number counter is incremented each time the transfer operation is performed. Furthermore, the image signal line number counter is counted down (step 24).

Next, if the recording operation for one page has not been completed (step 25), it is determined whether the KJi image signal input request is valid (step 27), and a new image signal input request is made. The process returns to step 12 on the right side and a new image signal is stored in the buffer memory 6o. This also applies when the count value of the image signal line counter is not equal to or greater than the specified value.

However, if there is no new image signal input request, it is then determined whether the recording start flag image is on (step 28), and if it is on, the image signal output state for one page continues. Therefore, until there is no image signal in the buffer memory 60, that is, until the count value of the image signal line number counter reaches "0", it is read line by line and transferred to the printer 5 (step 31). .32.
33).

On the other hand, when the output of image signals for one page is completed, the recording start flag is turned off and the output line number counter is also reset (step 25.2G).

If there is no new image signal input request, it is determined whether the count value of the effective line number counter is greater than or equal to a specified value (steps 27, 28, and 29).

As a result, if the count value of the effective line number counter is greater than or equal to the specified value, the recording start flag is turned on (step 3).
0), all valid image signals remaining in the buffer memory 60 are read out and transferred to the printer 5 (step 30).
~33).

In summary, each time an image signal is received, it is stored in the buffer memory 60, and when the number of stored lines reaches a specified value or more, it is transferred to the printer 5. At the time of displaying the line, the percentage of black picture signal is checked, and if it contains 5% or more of black information, it is counted as a valid picture signal line. If the remaining number of effective lines is equal to or greater than the specified value at the stage when one page's worth of output is completed, the recording start flag is turned on again, and the effective image signal remaining in the buffer memory 60 is read out. It is recorded on the next page of recording paper.

However, if the number of remaining lines of valid image signals is less than the specified value, the process returns to the initial state and the image signals in the buffer 1 memory are erased.

[Effects of the Invention] As explained above, according to the present invention, the ratio of black information to an image signal input or received when the original size exceeds a specified value and is less than a predetermined length is reduced. The scanning line is inspected for each scanning line, and the scanning line containing black information equal to or greater than a certain value is considered an effective scanning line, and only when the number of effective scanning lines is equal to or greater than the specified value, it is recorded on the next page. By doing so, unnecessary portions due to elongation of the document or elongation during the reading operation are not recorded, and unnecessary waste of recording paper can be prevented.

Conversely, if an image signal exceeding the specified value is input, it is always printed on the next page, so that anything other than the elongation of the document or elongation due to reading error will be correctly recorded on the next page.

In general, by using means for detecting the ratio of black information, recording can be stopped when all received image signals are white/n-signal, thereby preventing wasted performance on recording paper. can.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a flowchart 1-1 showing facsimile image signal transfer processing.
It is. DESCRIPTION OF SYMBOLS 1... Main control part, 2... Line, 3... Transmission control part, 4... Scanner, 5... Printer, 6... Image signal processing part, 60... Buffer memory, 61...Black information detection circuit. Figure 1

Claims (1)

[Scope of Claims] A facsimile device that stores a facsimile image signal received from a destination facsimile device or a reading unit in a buffer memory, and then transfers it to a recording unit and records it on recording paper line by line, comprising: a counting means for detecting the ratio of black information of the image signal in units of scanning lines, and counting the scanning line as a valid image signal line if the ratio of the black information is equal to or higher than a certain value; and a facsimile image remaining in the buffer memory. means for detecting the number of signal lines, and when the number of facsimile image signal lines remaining in the buffer memory exceeds a predetermined value at the end of each page recording, and when the number of valid image signal lines remains above a predetermined value, the remaining facsimile image signal lines are detected. Record the facsimile image signal line on the next page of recording paper,
A facsimile apparatus characterized in that if the number of facsimile image signal lines remaining in the buffer memory is less than a predetermined value and the number of effective image signal lines is less than a certain value, the remaining facsimile image signal lines are discarded.