JPH05122505A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To easily display received images without executing complicated image conversion processing or the like on the reception side by setting the reduced size or the segmented size of transmitted image data corresponding to the resolution and display size of a display device at the transmitting destination. CONSTITUTION:In the case of transmitting images, the image data in a routine paper size read by a reading part 13 are segmented into the reduced size or the prescribed size. The reduction of the images is executed at an image processing part 15 by reading image data stored in an image memory 16. When segmenting the images, the images in the memory 16 are read only for a specified part and stored again in the memory 16. Thus, by transmitting the respective converted image data, they can be easily displayed without executing the processing such as reduction or the like in case of displaying the data at the display device on the reception side and displayed in a state corresponding to the display size.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile machine having a display device.

[0002]

2. Description of the Related Art Conventionally, in order to avoid wasteful consumption of recording paper, received image data is temporarily displayed on a display device,
2. Description of the Related Art There is provided a facsimile apparatus that allows a user to print out only necessary received image data by allowing a user to select whether or not to output by a printer.

[0003]

By the way, recently,
Facsimile devices are becoming widespread not only in offices of companies and various organizations but also in general households. Therefore, in the case of performing the image display as described above, if the image is displayed by the TV receiver in the home, it is not necessary to provide a large screen for image display on the facsimile device side, which is advantageous in cost. is there. However, as compared with the resolution generally handled by a facsimile machine, the resolution of various displays is low, and there is no compatibility between the text on the facsimile communication and the text displayed on the display, and processing such as reduction / enlargement is required. There are problems such as deterioration and complication of processing.

The present invention transmits image data based on the resolution and paper size used for normal facsimile communication to a facsimile device that handles low resolution image data for displaying on a display device, or vice versa. When transmitting from a facsimile machine that handles data to a facsimile machine that handles image data of normal resolution and paper size, image data compatibility is realized with a simple configuration.
It is another object of the present invention to provide a facsimile device that can easily search on the screen when the transmitted and received image data is displayed.

[0005]

SUMMARY OF THE INVENTION The present invention is a facsimile apparatus having a reduction means for reducing image data and an image cutout means for cutting out a part of the image data. The image data reduced to a predetermined size is converted into a plurality of image data obtained by cutting out a part of the transmission image data, and both image data are transmitted. Therefore, by setting the reduced size and the cutout size according to the resolution and display size of the display device of the transmission destination, the reception image can be easily displayed without performing complicated image conversion processing on the reception side. ..

[0006] It should be noted that if the image data that has been reduced or cut out and converted is added with pixels for which the number of pixels is less than the number of pixels of the size of the transmission paper, the data can be transmitted by normal facsimile communication without any trouble. You can

On the other hand, when transmitting from a facsimile machine which handles low resolution image data for a display device to a facsimile machine which handles image data of normal resolution and paper size, the number of pixels of the transmission paper size of the image data is used. Pixels corresponding to the insufficient number of pixels are added and transmitted. Then, at this time, a pixel pattern indicating the right end or the lower end of the image data is added. With this, the range of the received image data can be easily specified on the receiving side, and particularly when the received image is displayed on the display device and scrolled to be searched, the range can be easily searched.

Further, when the transmitting side has a means for notifying the receiving side of the length of the image data to be displayed in the main scanning direction, the transmitting side transmits the image without adding the insufficient pixels to the right end of the transmitted image.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram for explaining an embodiment of the present invention.

In the figure, the control unit 11 includes a CPU and an RO.
It includes M, RAM, clock IC, I / O, CGROM, etc., and controls the operation of the entire device and manages data.

The operation unit 12 has various operation keys and a display unit, and receives and displays a key input by an operator. The reading unit 13 reads a document and converts it into an electric signal, and the recording unit 14 outputs an image on a recording sheet.

The image processing unit 15 encodes the image data read by the reading unit 13 into a compression code, decodes the received compressed image data into raw image data, and further enlarges or reduces the image. ..

The image memory 16 stores read raw image data, encoded compressed image data, received compressed image data, decoded raw image data and the like.

The communication control unit 17 is composed of a line interface, a telephone circuit, etc., and performs transmission / reception of image data and communication control data and control of incoming / outgoing calls.

The display device 18 is an image display unit composed of an LCD or the like, and reads out the image read by the reading unit 13 or the image received from the line from the image memory 16 and displays the image.

First, in the present embodiment, the image data is transferred from a facsimile apparatus which handles image data based on resolution and paper size used in normal facsimile communication to a facsimile apparatus which handles low resolution image data to be displayed on a display device. An example of transmission will be described.

FIG. 2 shows the reading unit 13 when transmitting an image.
3 shows an example of an image of a standard paper size read in step 1. In this embodiment, this image data is converted as shown in FIG. First, (3-1) of FIG. 3 shows a state in which an original of a standard paper size is reduced to a predetermined size,
(3-2) to (3-5) of FIG. 3 show a state in which a standard paper size document is cut into a predetermined size and divided into four.

Here, the image reduction is performed by reading out the image data stored in the image memory 16 and using the image processing section 15. However, this method is omitted because there are various known techniques.

On the other hand, as a method for cutting out an image, for example, the image shown in FIG.
It can be executed by storing it again in.

FIG. 4 is a flow chart showing this operation. First, the read address of the image memory 16 is set corresponding to the cutout portion (S1), and the read operation of that portion is started (S2). Then, when this reading is completed (S3), the process returns and the process of the next part is performed if necessary.

Next, referring to FIG. 5, the arrow marks indicating the right end and the lower end and white image data are added to the images shown in (3-1) and (3-2) of FIG. The image has been converted into the image.

In this processing, for example, the reduced image data is read out and stored again in the fixed size area of the image memory 16 in the arrangement as shown in FIG. 6, and the arrow mark and the white pixel data are stored in the margin. To store and. As shown in the figure, in this embodiment, the main scanning length of the standard paper size is reduced or cut to about 1/2, and a margin portion having substantially the same size is formed on the right side of the converted image. There is.

By transmitting the converted image data as described above, it is possible to easily display the image on the display device on the receiving side without performing processing such as reduction. For example, as shown in FIG. 7, the image is displayed in a state adapted to the display size. Therefore, even if the transmission side is converted and transmitted as shown in FIG. 5, the search for the right end and the lower end becomes very easy, the received image can be easily specified on the screen, and the reduced image or the equal-sized divided image is obtained. Thus, the content of the received image can be grasped.

When the communication protocol has a specific mode, the number of bits in the main scanning direction to be transmitted is transmitted to the receiving side, so that it is possible to transmit without adding a mark or a margin. .. So if you do this,
The burden of transmitting marks and margins is reduced, and communication costs can be reduced.

Next, as another embodiment of the present invention, an example of transmission from a facsimile machine handling low resolution image data for display to a facsimile machine handling normal resolution and paper size image data will be described. .. The configuration of the device is the same as that shown in FIG.

FIG. 8 shows the above-mentioned reading unit 13 when an image is transmitted.
An example of an image in which arrow marks indicating the right end and the lower end are added to the image data read in step 1 to add a margin and the image data is converted into a standard paper size is shown. For example, when the reading unit 13 is composed of a handy scanner, an electronic camera, or the like, the effective range to be read is often smaller than the standard paper size. Therefore, when it is displayed on the display device, it can be displayed as it is because the number of display pixels of the display device is small. On the contrary, according to the CCITT recommendation, the read image data cannot be directly encoded and transmitted, and conventionally, the image data is enlarged and transmitted as shown in FIG. However, when the image is enlarged and sent in this way,
As shown in FIG. 10, when a display is also connected to the receiving side, the receiving side cannot see the entire image unless the receiving image is reduced. Therefore, by transmitting the image converted as shown in FIG. 8, it is possible to perform display suitable for the display as shown in FIG. 11 without reducing the size on the receiving side. Moreover,
With the arrow marks indicating the right end and the bottom end, the range of the entire image can be easily recognized.

FIG. 12 shows the state of the transmission image stored in the image memory 16. As shown in the drawing, the read image data is stored in a state in which a portion that is insufficient with respect to the number of main scanning pixels of the standard size paper is left open. Next, the white pixel data and the mark data are written in the empty area to form transmission data.

FIG. 13 is a flow chart showing the operation from reading to transmission as described above.

First, the image is read by the reading unit 13, and the read image data is stored in the image memory 15 as described with reference to FIG. 12 (S11). Thereafter, white pixel data or the like is added to form transmission data (S12), which is encoded into a compression code (S13) and then transmitted (S1).
4).

Although it is possible to add only the white pixel data without using the above-mentioned arrow mark, in this case, the white pixel data may be added when the compression code is encoded.

When the communication protocol has a specific mode, the number of bits in the main scanning direction to be transmitted is transmitted to the receiving side, so that it is possible to transmit without adding marks or margins. .. So if you do this,
The burden of transmitting marks and margins is reduced, and communication costs can be reduced.

[0032]

As described above, according to the present invention, by setting the reduction size and the cutout size of the transmission image data according to the resolution and the display size of the display device of the transmission destination, a complicated image can be displayed on the receiving side. The received image can be easily displayed without performing conversion processing or the like.

Further, when image data suitable for the display device is transmitted, by enlarging the image data by adding pixels for which the number of pixels is insufficient to the number of pixels of the transmission paper size of the image data. You can easily send without doing. Further, in this case, the range of the received image data can be easily specified on the receiving side by adding the pixel pattern indicating the right end or the lower end of the image data. In particular, this received image is displayed on the display device. You can easily search when scrolling.

[Brief description of drawings]

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

FIG. 2 is a schematic diagram showing an example of a read image in the above embodiment.

FIG. 3 is a schematic diagram showing an example of a converted image in the above embodiment.

FIG. 4 is a flowchart showing an image cutting operation in the above embodiment.

FIG. 5 is a schematic diagram showing a state in which arrow marks indicating the right end and the lower end and white image data are added to the converted image in the above embodiment.

FIG. 6 is a schematic diagram showing a state in the image memory in the above embodiment.

FIG. 7 is a schematic diagram showing a display example of an image in the above embodiment.

FIG. 8 is a schematic diagram showing an image conversion operation in another embodiment of the present invention.

FIG. 9 is a schematic diagram showing a conventional enlarged image.

FIG. 10 is a block diagram showing an outline of a communication system in the other embodiment.

FIG. 11 is a schematic diagram showing a display example of an image in the other embodiment.

FIG. 12 is a schematic diagram showing a state in the image memory in the other embodiment.

FIG. 13 is a flowchart showing the operation of the other embodiment.

[Explanation of symbols]

 11 ... Control part, 12 ... Operation part, 13 ... Reading part, 14 ... Recording part, 15 ... Image processing part, 16 ... Image memory, 17 ... Communication control part, 18 ... Display device.

Claims (6)

[Claims] 1. A facsimile apparatus having reduction means for reducing image data and image cutting means for cutting out a part of the image data, wherein an image obtained by reducing one page of transmission image data to a predetermined size. A facsimile machine, characterized by converting data and a plurality of image data obtained by cutting out a part of the image data for transmission and transmitting both image data. 2. The facsimile apparatus according to claim 1, wherein the size of the image data to be converted is the display size of the display device. 3. The facsimile apparatus according to claim 1, wherein the converted image data is added with pixels for which the number of pixels is insufficient for the number of pixels of the transmission paper size. 4. A facsimile apparatus having means for adding and encoding pixels by adding pixels for the number of pixels of the transmission paper size, which is insufficient for the number of main scanning pixels of image data having the resolution of the display device. And a white pixel is added to the pixel pattern indicating the right end of the image data. 5. The facsimile apparatus according to claim 4, wherein a pixel pattern indicating the lower end of the image data is added. 6. The method according to claim 4, further comprising means for notifying the receiving side of the length of the image data to be displayed in the main scanning direction, and coding by the response of the receiving side without adding any insufficient pixels to the right end of the transmitted image, A facsimile device characterized by transmitting.