JPH01144777A - Facsimile receiver - Google Patents

Abstract

PURPOSE:To shorten the transmission time and to reduce a waste of recording paper by providing plural means each of which two-page components of a recording image signal corresponding to A6 size are stored in and recording four pages of documents having A6 size as one page having A4 size at the time of receiving documents having A6 size. CONSTITUTION:An image information memory includes plural memory means 61 and 62 each of which two-page components or more of the recording image signal corresponding to ISO A6 size are stored in, and a means 8 is provided which temporarily stores four pages of documents in memory means 61 and 62 at the time of receiving documents having ISO A6 size and records stored contents of memory means 61 and 62 as one page having ISO A4 size. That is, four pages having A6 size are temporarily stored in plural memory means 61 and 62, each of which two-page components or more of the recording image signal corresponding to ISO A6 size are stored in, at the time of receiving documents having ISO A6 size and are recorded as one page having ISO A4 size. Thus, the image signal is transmitted without adding a redundant white signal to shorten the transmission time, and a waste of recording paper is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is applied to a facsimile receiver of a facsimile machine. In particular, the present invention relates to an image signal processing method for a facsimile receiver that is a standard 63 machine that complies with CCI TT, T, 30, T, 4 recommendations, and that displays the ability to receive documents of ISOA6 size.

〔overview〕

The present invention provides a facsimile receiver with a plurality of means for accumulating two pages of recording image signals equivalent to 6 size, so that when a document corresponding to 6 size is received, up to 4 pages of the document corresponding to A6 size are stored in A4. By recording as one page corresponding to the size, it is possible to transmit without adding redundant white signals, shortening transmission time and reducing waste of recording paper.

[Conventional technology]

FIG. 4 is an explanatory diagram of image signal processing in a conventional facsimile receiver. In FIG. 4, W indicates a white signal portion, and the diagonally shaded portion indicates an effective screen corresponding to 6-size.

Conventionally, facsimile receivers are capable of transmitting documents that are equivalent to ISOAG size, even if the other party's machine is
A6 to be designated as a standard G3 machine with A4 size recording capability according to CCI TTST, 30, T, 4 recommendation.
Even when transmitting a document of the same size, the main scanning length on the transmission path is set to 1.728 dots/line. For this reason, for 864 dots/line, which is the main scanning length equivalent to A6 size, as shown in Figure 4(a), 43 dots/line at both ends.
Forcibly transmit two dots at a time as white, or as shown in Figure 4 (C), align the effective screen equivalent to A6 size to the left or right and force the remaining half of the scanning lines to be white. I was trying to transmit it as.

[Problem that the invention seeks to solve]

However, with such conventional facsimile machines, A6
When sending a document of the same size as in Figure 4 (a), (
As is clear from b) and (c), a redundant white signal unrelated to the image information is added and sent onto the transmission path.

For this reason, ■ Transmission time increases by the amount of white signals; ■ Standard 63 machines on the receiving side receive redundant white signals on receiving recording paper equivalent to A4 size. Therefore, about 50% of the information is invalid, and the receiving recording paper is not used effectively.

The present invention solves the above-mentioned drawbacks, and aims to provide a facsimile receiver that can transmit without adding redundant white signals, has a short transmission time, and wastes less recording paper.

[Means for solving problems]

The present invention includes a decoding section that decodes an input encoded image signal and outputs a recorded image signal, an image information memory that temporarily stores this recorded image signal, and a recording section that records the output of this image information memory. In the facsimile receiver equipped with
ISO
If you receive a document equivalent to A6 size,
The present invention further comprises means for controlling the decoding section, the memory means, and the recording section so as to temporarily store up to the page in the memory means and record the stored contents of the memory means as one page corresponding to ISOA4 size. Features.

[Effect]

With multiple memory means that store two or more pages of recording image signals equivalent to ISOAB size, when an ISOA6 size original is received, up to four pages equivalent to A6 size are temporarily stored and recorded as one page equivalent to ISOA4 size. do. This allows transmission without adding redundant white signals, shortens transmission time, and reduces waste of recording paper.

〔Example〕

Embodiments of the present invention will be described with reference to the drawings. 1st
The figure is a block diagram of a facsimile receiver according to an embodiment of the present invention. In FIG. 1, the facsimile receiver includes a network control section 2 that inputs facsimile information modulated from outside the figure through an input terminal 1, a demodulation section 3 that demodulates the output of the network control section 2, and a demodulation section 3 that demodulates the output of the network control section 2. a decoding section 4 that decodes the output of the decoding section 4; a changeover switch 5 that inputs recorded image information output from the decoding section 4;
An image information memory 61 capable of storing recorded image signals equivalent to OA6 size and an IS connected to the other output of the changeover switch 5.
An image information memory 6 □ that can store recorded image signals equivalent to OA6 size, and a changeover switch 7 whose one input is connected to the output of the image information memory 61 and the other input is connected to the output of the image information memory 6 □. , a recording section 8 for recording the output of the changeover switch 7, a decoding section 4, a changeover switch 5.7, an image information memory 6, . 6□ and the recording section 8, and the image information memo 176, . 62, and a main control section 10 that controls the network control section 2, the demodulation section 3, the decoding section 4, and the image information memory control section 9.

Here, the feature of the present invention is that the image information memory 61
．． 6.degree., a changeover switch 5.7 and an image information memory control section 9, which are controlling means.

The operation of the facsimile receiver having such a configuration will be explained. FIG. 2 is an explanatory diagram of image signal processing in the facsimile receiver of the present invention. FIG. 3 is a flowchart showing the operation of the facsimile receiver of the present invention.

Figure 2 (a) shows the case where the received manuscript is one page (Figure 2, etc.)
Figure 2 (C) shows the case where the received original has 2 pages, Figure 2 (C) shows the case where the received original has 3 pages, and Figure 2 (d) shows the case where the received original has 4 pages.
In each case, received image information for 1 to 4 pages corresponding to A6 size is recorded as a main scanning length corresponding to A4 size. On the other hand, the sub-scanning length is A
This example shows the most standard case in which the long side of 6 sizes is resolved with a resolution of 3.85 lines/mm, and therefore 572 lines/long side of A6 size and 1.144
Line/A4 size long side.

Further, if there are more than four pages of received originals, processing is performed using a combination of the processing shown in FIGS. 2(a) to 2(d). For example, in the case of 23 pages of received originals, see Figure 2 (
Five received images shown in d) and one received image shown in FIG. 2(C) are obtained.

Next, details of the recording image signal processing method according to the present invention will be explained with reference to the flowchart of FIG. Note that the processing method shown in FIG. 3 corresponds to the screen shown in FIG. 2 and the block configuration diagram shown in FIG.

The flowchart in FIG. 3 mainly shows the operation of the control section of the image information memory when receiving one communication. First, an index indicating the number of received manuscript pages is set to 0 (■).

Next, since i=0, if the presence or absence of the first page of the received document has been confirmed (■), then 1 to 864 dots corresponding to the main scanning length of 6 sizes are stored in the image information memory while receiving. 61
and write all the recorded image signals of one page of A6 size (
If the resolution is 3.85 lines/mm, write 572 lines/A6 size (long side) (■).

Next, if there is no received document for the second page (■), write all white signals to the image information memory 6.0865 to 1.728 dots (■), and then read the recorded image signal from the image information memory 61. , transfer to recording unit 8 and record (■)
. The received image in this case is as shown in FIG. 2(a).

On the other hand, if there is a received document for the second page (■), the recording image signal for the second page is written into the image information memory 610865-1.728 dots (■). Next, check the presence or absence of the third page of the received document (■), and if there is not, read out the recorded image signals of the first page and the recorded image signals of the second page stored in the image information memory 61 at the same time. The data is transferred to the recording unit 8 and recorded (■). In this case, the received image is the second
The result is as shown in Figure (b).

Furthermore, the third or fourth page of the received original is written to the image information memory 6 □ and stored as one page of A size equivalent to four pages of A6 size.
Continuously read out □, transfer it to the recording section 8, and record it (■
~■). The received image in this case is shown in Figure 2 (C) or (d).
It becomes as shown in .

If the received manuscript has more than 4 pages, (0), ■,
(2) Exactly the same process is executed repeatedly.

〔Effect of the invention〕

As described above, the present invention has the excellent effect of being able to transmit without adding redundant white signals, shortening transmission time, and reducing waste of recording paper.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a facsimile receiver according to an embodiment of the present invention. FIG. 2 is an explanatory diagram of image signal processing of the facsimile receiver of the present invention. FIG. 3 is a flowchart showing the operation of the facsimile receiver of the present invention. FIG. 4 is an explanatory diagram of image signal processing in a conventional facsimile receiver. DESCRIPTION OF SYMBOLS 1... Input terminal, 2... Network control section, 3... Demodulation section, 4... Decoding section, 5.7... Changeover switch, 6.
．． 62... Image information memory, 8... Recording section, 9...
Image information memory control section, 10... main control section.

Claims (1)

[Claims] (1) A decoding unit that decodes an input encoded image signal and outputs a recorded image signal, an image information memory that temporarily stores this recorded image signal, and a recording unit that records the output of this image information memory. In the facsimile receiver equipped with the above-mentioned facsimile receiver, the image information memory includes a plurality of memory means for storing two or more pages of recorded image signals equivalent to ISOA6 size;
The decoding unit and the memory are configured to temporarily store up to four pages of the original in the memory means when a document corresponding to the size is received, and record the stored contents of the memory means as one page corresponding to the ISOA4 size. Means and means for controlling the recording section