JPS627260A - Facsimile transmitter - Google Patents

Abstract

PURPOSE:To efficiently accomplish the transmission of a picture having different size by reading in a horizontal direction a picture information scanned and stored in a vertical direction in the titled transmitter which transmits stored picture information. CONSTITUTION:The size of an original is assumed to be an A5 size. The original is scanned by a read circuit 11 along a direction B, and the data is stored in a picture data accumulating circuit 12. When said storing is terminated, a vertical-horizontal converting circuit 13 reads sequentially the picture data stored in the circuit 12 in accordance with the storage address in the direction A of the circuit 12, and supplies it to an encoding circuit 14. In the circuit 14, an encoded data is generated based on an encoding algorithm, and the data thus generated is transmitted to a sequential communication control circuit 15. When the encoded data is thus transmitted, it virtually means that a half of an A4-size original is transmitted to a line. And, the interface to be on the line conforms to the CCITT requirement. Also, the data is encoded and transmitted efficiently.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a facsimile transmission device that enables communication between facsimile devices with different image sizes.

〔overview〕

The present invention temporarily stores image information generated by scanning a document image, and in a facsimile transmission device that transmits the stored image information, scans the image information in the vertical direction and reads out the stored image information in the horizontal direction. This makes it possible to efficiently transmit images of different sizes.

[Conventional technology]

As shown in FIG. 3, the conventional facsimile machine is comprised of a reading circuit 41, a self-image signal adding circuit 42, an encoding circuit 43, a communication control circuit 44, a call connection control circuit 45, and a device control circuit 46. FIG. 4 shows a data link procedure between devices, and the conventional technology will be explained based on this diagram.

The interface of a facsimile machine having a data compression means is determined based on the case of an A4 size machine recommended by the International Telegraph and Telephone Consultative Committee (hereinafter referred to as C, CITT). Therefore, if the paper size is different from A4 size, each device must independently determine the number of dots in the main scanning direction for each paper size, or the self-portrait signal must be set to match the number of dots for A4 size paper. Methods such as addition were used. That is, a device (hereinafter referred to as "device 1") that synthesizes an A5 size reproduced image from a facsimile machine (hereinafter referred to as "device 1") that handles A4 size original images.
It is called device 2. ), first make a call connection from device 1, and after the call connection is completed,
The calling procedure is carried out from the device 1. Thereafter, a CDCL signal is used to inform the device 1 that there are parameters for both A4 and A5 sizes. Device 2 sends an RDCLP signal to inform that the parameters of device 2 are A5 size. The device 1 understands that the device 2 has an A5 size document, further determines that an A5 size document can be sent when an A5 size document is set, and continues the procedure. Subsequently, information encoded using the old CD signal is sent out.

The number of dots per line of encoding specified by CCITT is 1728 dots as shown in FIG. The number of dots per line of an A5 size document is 1184.
Since it is a dot, the self-portrait signal addition circuit 42 adds a self-portrait signal of 272 dots to each of the left and right sides, making one line worth 1728 dots, and then the encoding circuit 43 performs MH encoding, for example, based on the MR method. Encoding is performed, and the encoded data is sent out on the line via a communication control circuit 44 and a call connection control circuit 45. In this way A5
Encoded data of paper size was being sent.

[Problem that the invention seeks to solve]

In such a conventional device, since the self-image signal is added to both the left and right sides and then encoded, there is a drawback that the amount of encoded data increases and the communication time becomes longer.

SUMMARY OF THE INVENTION An object of the present invention is to provide a facsimile transmitting device that can efficiently utilize communication time to solve these drawbacks.

[Means for solving problems]

The present invention is a facsimile transmitting apparatus equipped with a storage means for storing image information related to pixels of an image to be transmitted, and as means for solving the above-mentioned problems, the storage means comprises
writing means for storing image information of the pixel at an address numbered corresponding to the coordinates of the first orthogonal coordinate system that determines the position of the pixel; and reading means for reading out the stored image information based on the address numbered corresponding to the coordinates transformed by the second orthogonal coordinate system.

[Effect]

For example, image information generated by scanning an A4-sized document image over a half-sized area along the short side thereof is sequentially written into the storage means.

This is sequentially read out and transmitted along the long side of the A4 size. As a result, an A5 size original image is transmitted through an A5 size 4 size interface, reducing transmission time and increasing efficiency.

〔Example〕

Hereinafter, an apparatus according to an embodiment of the present invention will be explained based on FIG.

FIG. 1 is a block configuration diagram showing the configuration of an apparatus according to an embodiment of the present invention. FIG. 2 is a schematic diagram showing the original size converted by the apparatus of this embodiment. In this figure, (a) shows the input original size, and (b) shows the converted original size.

First, the configuration of this embodiment device will be explained based on FIG. This embodiment device includes a reading circuit 11 and an image data storage circuit 1 to which the output of the reading circuit 11 is connected to its input.
2, a vertical/horizontal conversion circuit 13 whose input is connected to the output of the image data storage circuit 12, an encoding circuit 14 whose input is connected to the output of the vertical/horizontal conversion circuit 13, and an encoding circuit. Communication control circuit 1 with 14 outputs connected to its inputs
5, a call connection control circuit 16 to which the output of the communication control circuit 15 is connected to its input, a reading circuit 11, an image data storage circuit 12, an aspect conversion circuit 13, an encoding circuit 14, a communication control circuit 15, and a call connection. and a device control circuit 17 connected to the control circuitry 6.

Next, the operation of this embodiment device will be explained based on FIGS. 1 and 2.

The AS size original shown in FIG. 2(a) is scanned by the reading circuit 11 along the direction B in FIG. 2(a) and stored in the image data storage circuit 12. After the storage is completed, the image data stored in the image data storage circuit 12 is sequentially read out by the vertical/horizontal conversion circuit 13 according to the storage address in the A direction of the image data storage circuit 12, and is supplied to the encoding circuit 14. . The encoding circuit 14 generates encoded data based on the encoding algorithm, and this data is sequentially sent to the communication control circuit 15. When encoded data is sent out in this way,
As shown in Figure 2 (b), half of the A4 size original has been sent to the line, and the interface to the line is CC.
Conforms to ITT recommendations and is wasteful (data is encoded and transmitted).

Although this embodiment of the apparatus has been described with respect to the relationship between A4 size originals and A5 size originals, the present invention can also be practiced with originals other than these sizes.

〔Effect of the invention〕

As explained above, the present invention eliminates the need to add unnecessary codes to encoded data by swapping the vertical and horizontal directions of images, and reduces communication time because the image code size does not need to be increased each time. It has the effect of

[Brief explanation of drawings]

FIG. 1 is a block configuration diagram showing the configuration of an apparatus according to an embodiment of the present invention. FIG. 2 is a schematic diagram showing image sizes before and after conversion performed by the apparatus according to the embodiment of the present invention. FIG. 3 is a block configuration diagram showing the configuration of a conventional device. FIG. 4 is a sequence diagram showing a data link procedure between conventional devices. FIG. 5 is a schematic diagram showing image sizes before and after conversion performed by a conventional device. 11.41... Reading circuit, 12... Image data storage circuit, 13... Vertical/horizontal conversion circuit, 14.43... Encoding circuit, 15.44... Communication control circuit, 16. 45・
...Call connection control circuit, 17.46...Device control circuit,
42...Self-portrait signal addition circuit. Configuration diagram of the embodiment 31 Figure 1 Collection t (Q) (b) ゛Image diagram used in the embodiment Figure 2, Configuration diagram of the conventional example 33 Loader link procedure diagram also Figure 4 Image diagram handled in the conventional example Figure 5

Claims (1)

[Claims] (1) In a facsimile transmission device equipped with a storage means for storing image information related to pixels of an image to be transmitted, the storage means is numbered in accordance with the coordinates of a first orthogonal coordinate system that determines the position of the pixel. a writing means for storing the image information of the pixel at the specified address; 1. A facsimile transmission device comprising: reading means for reading stored image information based on an address.