JPH0644799B2 - Equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to an improvement of a facsimile device.

2. Description of the Related Art Conventionally, in a facsimile apparatus, a width of a transmission document placed on a document table is designated by a document guide, and data of each line in the designated document width is read by a scanner unit and encoded and transmitted. I have to.

However, the reading and scanning are performed by the scanner unit even in the margins at both ends of the document, and it takes an unnecessary time to read the image information of the document.

In some cases, it is sometimes desired to send only a required portion of the original by facsimile, but in the conventional facsimile apparatus, the scanner unit cannot read only the required portion of the original.

Further, conventionally, as a means for transmitting only a necessary portion of a document by facsimile, image information for one page read by a scanner is temporarily stored in a buffer memory having a capacity for one page, and then specified in the memory. Only the data in the designated area is partially read, and the OR processing is performed to add white data to the portion outside the designated area in the one page so that the edited image information for one page is encoded and transmitted. .

However, if such a partial transmission means is used, it takes a lot of time for the editing work.

The present invention has been made in consideration of the above points, and the facsimile transmission of the image information of only the necessary portion of the manuscript is performed without any editing work of the partial transmission using the memory for one page. (EN) Provided is a facsimile device capable of being operated.

To achieve the object of the present invention, in a facsimile apparatus, a reading means for reading an original document line by line and outputting image information, and a line buffer for accumulating the image information for one line output from the reading means are provided. In a facsimile apparatus which has image data input to a line buffer and transmits the encoded image information to a partner apparatus, a detection unit that detects the document width of the document and a designation that specifies an effective reading width of the document in the main scanning direction. Means, the valid reading width designated by the designating means and the document width detected by the detecting means are compared to identify the invalid reading area, and the invalid reading area when the image information is stored in the line buffer. And a replacement means for replacing the image information in the portion corresponding to the above with white information, and replacing the image information in the invalid reading area with white information and accumulating in the line buffer,
The image information accumulated in the line buffer is encoded and transmitted to the partner device.

An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

In the facsimile apparatus according to the present invention, as shown in FIG. 1A, a document for designating the document width of the transmission document 2 placed on the document table 1 and for guiding the sub-scan feed of the transmission document 2 Guides 3 and 4 and original reading width adjusting claws 6 and 7 for designating the scanning width of the scanner unit 5 in the main scanning line direction (original width direction) of the transmitted original 2.
And are provided.

The original reading width adjusting claws 6 and 7 are slidably attached along a scale 8 having a scale on the outer wall of the scanner unit 5, as shown in FIG. One of the document guides 3 and 4 is fixed, and the other can be slid in the document width direction.

In such a case, when the document guide 4 is positioned so that both ends of the transmission document 2 placed on the document table 1 are sandwiched between the document guides 3 and 4, the position signal of the document guide 4 at that time is detected. Is given to a system controller (not shown) so that the original width of the transmission original 2 can be read. Further, when the original reading width adjusting claws 6 and 7 are set corresponding to the image areas in the main scanning line direction to be read in the transmission original 2 placed on the original table 1, the respective original reading width adjusting claws at that time are set. According to the set positions of 6 and 7, the scanning area of the transmission original 2 by the scanner unit 5 is determined by the system controller.

In FIG. 1, 9 indicates an operation panel portion and 10 indicates a document tray.

As shown in FIG. 2, the system controller positions the document guide 4 on the condition that the select key K1 in the partial transmission mode provided on the operation panel 9 is pressed, and the document width W of the document 2 to be transmitted is determined. When the operation area L to be read is detected by setting the original reading width adjusting claws 6 and 7, the non-reading at the start end portion of the main scanning line is performed based on the specified values W and L. The width of the region n1 and the non-read region n at the end portion
After the width of 2 is calculated, the scanner unit 5 is caused to read the image information in the scanning region L portion in each main scanning line. At that time, under the control of the system controller, at the same time, white data is put in each of the non-reading area n1 and the non-reading area n2, one line of data is created at the time of reading partial image information, and each one of the lines is created. After storing the created data of in the send buffer,
The data is encoded and transmitted to the destination through the ordinary transmitting means.

When data for each line is created, specifically, for a buffer memory having a capacity of one line, a white area is first written in the leading end memory area portion corresponding to the non-read area n1 via the memory controller. Data is written, then the data read by the scanner unit 5 is stored in the corresponding portion of the buffer memory, and the end corresponding to the non-read area n2 is finally made according to the end mark of the line data when read by the scanner unit 5. White data is stored in the memory area, and a line end mark is added at the end to create data for each line.

Then, if the received data is combined on the receiving side and recorded by the printer unit, as shown in FIG. 3, an image 11 in which only a necessary portion of the transmission document 2 is recorded can be obtained. it can.

When the width of the non-reading area n1 in the main scanning line is calculated on the basis of each value of W and L in the system controller, specifically, the center O of the original O of the original 2 is specified according to the original W of the specified original 2 to be transmitted. The position is calculated, and the distance d1 from the document center O to the setting position of the document reading width adjusting claw 6 is calculated, and then, n1 = (W / 2) -d1 is calculated. Similarly, when the non-reading area n2 is extended, the distance d2 between the original document center O and the set position of the original reading width adjusting claw 7 is calculated, and then n
1 = (W / 2) -d2.

Also, instead of using such a document reading width adjusting mechanism,
An original reading width adjusting function is provided inside, and by using a ten-key TK provided on the operation panel 9, for example, n1 and n
Each value of 2 may be directly key-inputted. In this case, it is desirable that the display unit D provided on the operation panel 9 is set to the interactive mode to display the respective key-input values of n1 and n2 so that the operator can confirm the values.

Effects As described above, in the facsimile apparatus according to the present invention, only the necessary image portion in each main scanning line is set as an effective reading area, and other unnecessary portions are replaced with white data at the time of reading, and each line is scanned. Data is created and encoded and transmitted. By taking a simple means, it is possible to efficiently transmit only the necessary part of the transmission document in a short time. Have

Furthermore, since unnecessary data is replaced with white data and data for each line is created and encoded and transmitted, it is possible to maintain compatibility with a conventional facsimile apparatus that performs encoding and decoding on a line-by-line basis. it can.

[Brief description of drawings]

1 (a) and 1 (b) are a plan view and a front view showing the external appearance of a facsimile apparatus according to an embodiment of the present invention, and FIG. 2 is a view showing an example of a partial transmission setting state in a transmission original, FIG. 3 is a diagram showing a recorded image on the receiving side. 1 ... Original table, 3,4 ... Original guide, 5 ... Scanner part, 6,7 ... Travel width adjustment claw, 8 ... Scale

Claims (1)

[Claims] 1. An image input to a line buffer, comprising a reading unit for reading an original document line by line and outputting image information, and a line buffer for accumulating the image information for one line output from the reading unit. In a facsimile device that encodes information and transmits it to a partner device, a detection unit that detects a document width of the document, a designation unit that designates an effective reading width in the main scanning direction in the document, and a designation unit are designated. The effective reading width is compared with the document width detected by the detecting means to identify the invalid reading area, and when the image information is stored in the line buffer, the image information of the portion corresponding to the invalid reading area is white. The image information in the invalid reading area is replaced with white information and accumulated in a line buffer, and the image information accumulated in the line buffer is encoded and sent to a partner device. Facsimile apparatus characterized by.