JPH03195176A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To prevent picture data from being erased and a recording sheet from being wasted by dividing one transmission original into two parts, and to realize the received original practically same as the transmitted original by suitably thinning out white lines from the picture data when the transmitting original is larger than the recording sheet in a prescribed size. CONSTITUTION:A means 3 is provided to decode a compressed code based on the received transmitting original to the picture data, and a means 9 is provided to suitably thin out the white lines from the picture data when the transmitted original is larger than the recording sheet in the prescribed size. Then, a means 6 is provided to output the picture data thinning out the white line to the recording sheet and to obtain the received original. In such a way, the white lines are suitably thinned out from the picture data. Thus, even when the transmitted original is larger than the recording sheet, the received original is made practically same as the transmitted original.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a facsimile machine, and more particularly to a facsimile machine that uses recording paper of a predetermined size.

(B) Conventional technology Most conventional facsimile machines use thermal roll paper as recording paper, but due to the future demand for higher quality facsimile documents, cut sheets of plain paper, that is, sheets of predetermined size, are used. It is expected that the demand for facsimiles using recording paper will continue to increase. In a facsimile machine that uses roll paper, even when receiving a long original to be sent, it is possible to directly output image data onto the roll paper. However, facsimile machines that use recording paper of a predetermined size require various processes.

In a conventional facsimile machine that uses recording paper of a predetermined size, the following three processes are performed when a transmission document that is slightly longer than the recording paper of a predetermined size is received.

(1) Since the image data of the long bone protrudes from the recording paper of a predetermined size, it is discarded as is.

(2) Cut the image data by a predetermined size of recording paper, record the long bone image data on the next page, and output.

(3) Reduce the entire image so that it fits on recording paper of a predetermined size (Japanese Unexamined Patent Publication No. 102160/1983).

(c) Problems to be solved by the invention The above three processes have the following problems.

In the process (1), a part of the image data that was originally sent by the existing transmitting side is lost. Furthermore, there is no way for the sending side to know the circumstances of the disappearance, and if necessary, it is necessary to wait for contact from the receiving side through human intervention and resend the image data of the lost portion. Furthermore, depending on the transmitted document, the receiving side may not be able to determine whether the received document has lost image data or whether it originally did.

In the process (2), one original to be sent is divided into two originals to be received, which not only consumes extra recording paper but also makes the received originals difficult to read.

In process (3), problems in (1) and (2) are resolved, but because the reduction process is performed, the received document may be smaller than the transmitted document, and small parts may be crushed and difficult to see. There is.

(d) Means for Solving the Problems The present invention provides a means for decoding a compression code based on a received transmission document into image data, and a means for decoding a compression code based on a received transmission document into image data, This facsimile apparatus is characterized by comprising means for appropriately thinning out mill lines from data, and means for outputting image data from which white lines have been thinned out onto the recording paper to obtain a received document.

(e) Function A typical manuscript has a top margin, a bottom margin, a space between lines, etc.
Noting that the mortar lines are usually continuous, the apparatus of the present invention thins out the white lines from the image data as appropriate. The received original document obtained by outputting the image data with the die lines thinned out on recording paper is substantially equivalent to the transmitted original document, even if the transmitted original document is larger than the recording paper.

(F) Examples Hereinafter, the present invention will be described in detail based on drawings showing examples thereof.

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 an image reading device (2), an encoding/decoding circuit (3), a communication control circuit (4), a recording device (5), an image memory (6), and a storage circuit (described later). 7), key operation display panel (8), thinning processing circuit (
9) etc.

The image reading device (2) is constituted by a scanner using, for example, a -dimensional line sensor, and its maximum readable size is defined by the effective width of the line sensor.

This image reading device (2) outputs read image data (dot data) to an image memory (6).

The encoding/decoding circuit (3) compresses and encodes the image data obtained as dot data, for example, line by line, for transmission, or decodes the image data with a compression code based on the received transmission document. become

The image memory (6) is composed of a hard disk or the like, and stores the image data read by the image reading device (2), and also stores the image data decoded by the encoding/decoding circuit (3). Remember.

The storage circuit (7) stores character codes such as various communication management information sent from the main control circuit (1) or management information in broadcast communication for each facsimile communication.

The communication control circuit (4) controls the input and output of signals to and from the communication line (10).

The recording device (6) is composed of, for example, a laser printer, a thermal printer, etc., and a printing element scans in a main scanning direction and moves recording paper in a direction perpendicular to this, that is, in a sub-scanning direction.

The key operation display panel (8) includes keys operated by the operator and a display panel for providing various information to the operator.

When the compression code based on the received transmission document is completely decoded into image data in the encoding/decoding circuit (3), the thinning processing circuit (9) thins out the data of a predetermined size to be used. Compare the size of the output image (transmission original) obtained by outputting the recording paper and the image data to the recording device (6), and if the output image is thicker, thin out the white lines from the image data as appropriate. .

The receiving operation in the facsimile machine having such a configuration will be explained with reference to the flowchart shown in FIG.

The main control circuit (1) decodes the compressed code received by the communication control circuit (4) into image data line by line in the encoding/decoding circuit (3), and stores this in the image memory ( S
l).

The main control circuit (1) determines whether the decoded image data is the own line (S2), and if it is a white line, the position of that line is stored in the thinning processing circuit (9) (S3).

The main control circuit (1) determines whether or not the decoded image data is the final line (S4), and if it is not the final line, it transitions to Sl, and if it is the final line, it transitions to S5.

The size of the output image obtained by outputting the image data decoded by the thinning processing circuit (9) to the recording device (6);
The main control circuit (1) compares recording sheets of a predetermined size set in the recording device (6), and based on the comparison result, determines whether thinning processing is necessary and possible (S5). If necessary and possible, thinning processing circuit (9)
A white line is appropriately selected from the positions of the mortar lines stored in (S6).

It is desirable that this mortar line selection process be performed based on the continuous ratio of white lines, etc. The received document obtained based on the continuous ratio is substantially equivalent to the transmitted document. In addition, it is also possible to perform processing such as selecting only the top margin or the bottom margin.

Based on the result in S6, the main control circuit (1) thins out the selected mill line and reads image data from the image memory (6) (S7), outputs this to recording paper by the recording device (5), A received manuscript is obtained (S8).

In addition, in S5, whether thinning processing is not necessary (that is, the recording paper of the predetermined size is larger than the transmitted document),
Or, if thinning processing is impossible (that is, the size of the output image obtained by outputting image data with die lines thinned out according to predetermined rules is larger than the recording paper of a predetermined size), conventional techniques Perform the processing described in .

(G) As described in detail, according to the present invention, problems that occurred in the conventional processing of somewhat long transmission documents, such as loss of image data and two sheets of one transmission document, can be solved. It is possible to eliminate the waste of recording paper and the difficulty in viewing due to division, and also to eliminate image deterioration that may occur due to reduction processing, and it is possible to obtain a received original that is substantially the same as the transmitted original.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a facsimile machine according to an embodiment of the present invention, and FIG. 2 is a flow diagram for explaining the operation of the facsimile machine according to an embodiment of the present invention. (1)...Main control circuit, (2)...Image reading device,
(3)...Code A (-Decoding circuit, (4)...Communication control circuit, (5)...Recording device, (6)...Image memory, (7)...Storage Circuit, (8)... Key operation display panel, (9)... Thinning processing circuit, (10)...
・Communication line.

Claims (1)

[Claims] 1. A means for decoding a compression code based on a received transmission document into image data, and when the transmission document is larger than a recording paper of a predetermined size,
A facsimile apparatus comprising: means for appropriately thinning white lines from the image data; and means for outputting the image data from which the white lines have been thinned out onto the recording paper to obtain a received document. 2. The facsimile apparatus according to claim 1, wherein white lines are thinned out from the image data based on a continuous ratio of white lines.