JPS5937767A - Facsimile multiple address transmitter - Google Patents

Abstract

PURPOSE:To eliminate easily information which is written on an original in an optional color and need not be transmitted, by inserting a color filter or half- mirror in the optical path between the original surface and a photodetection sensor. CONSTITUTION:An illumination lamp 14 is turned on for facsimile signal transmission and the color filter 2 which allows light in the same color with unnecessary information on the original surface 1 is interposed between the lamp 14 and a CCD 4. In this case, the filter 2 may be interposed between the lamp 14 and original surface 1. A picture in the same color with the color filter 2 in a picture formed on the CCD 4 decreases in the relative color extent between a picture part and a nonpicture part. For this purpose, the threshold value of a detected signal is set properly to remove only the picture information in the same color with the color filter 2 from an image-formed figure. Further, the optical path is branched by the half-mirror to obtain contents of pieces information of the original by colors.

Description

[Detailed description of the invention] The present invention relates to a facsimile circular transmission device.

In general, in facsimile circular transmission, one and the same document is transmitted to an unspecified number of recipients either sequentially or simultaneously, but in doing so, some of the contents of the document may be deleted depending on the destination, or new documents may be deleted. Adding content has not been possible with conventional facsimile transmission devices. For this purpose, the original must be replaced, which reduces the merits of a multicast transmission system. In addition, so-called intelligent facsimiles that have a function to edit the contents of a document can change the contents of the same document for each destination, but it is difficult to do so in combination with a computer with complicated software or software functions. In order to do this, the equipment inevitably requires a lot of labor, and the cost and effort required to operate it becomes enormous.

The present invention has been made in view of the above points, and its purpose is to remove unnecessary information written in an arbitrary color from a document to be sent, and to easily select the content of the information to be sent based on the same document. The purpose of this method is to make it possible to transmit originals with different contents to different recipients, either sequentially or simultaneously.

Further, by using the device of the present invention, the effects described later can be expected in a general facsimile transmission device.

In general, manuscripts sent by facsimile often contain disturbing information that is better not to be read, such as cross lines, outline lines, or notes for entry. Although notes and annotations were still written on the manuscript, it was often inconvenient to reproduce them on the received manuscript. In such cases, the conventional method has been to use the spectral sensitivity characteristics of the reading sensor to separate the image information from other image information. A light blue color is generally used as the so-called dropout collar for this purpose, but in general, this dropout collar is not a color that the light receiving sensor is intentionally made with that function in mind. Since it is a secondary derivative of the sensor's original characteristics, its function is often insufficient. By the way, if the blue color is relatively dark, or if the document itself does not have great shading, the dropout color function will not work. This function is important; for example, in a general facsimile machine, the received and reproduced original is displayed in a digital format that does not produce halftones. , the received image will be solid black and very difficult to see. Furthermore, high-speed facsimiles that compress information by encoding have the disadvantage that the time required to transmit unnecessary information increases. Furthermore, the dropout colors that have been intentionally used in the past are usually light-toned colors, so the colors that can be used for graph paper or manuscript paper with grooves are limited, or there are annotations that do not need to be sent. There were drawbacks such as the necessity to prepare a special writing implement for writing, and the color of the writing implements being generally difficult to see with the human eye.

The gist of the present invention is to provide a document reading device that focuses light from the surface of a document to be read onto a light-receiving sensor using an imaging lens to read an image of the document surface. A color filter corresponding to the color of the unnecessary information contained in the document surface can be inserted into the optical system path leading up to the document surface, and the insertion of the filter can be appropriately controlled using means such as an electric motor, or a no-f mirror can be inserted. The present invention provides a facsimile and a communication device that reads a document and removes a part of the document content written in an arbitrary color using the document reading device, which is characterized by having an optical path branched by a method such as the above.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a schematic cross-sectional view of an embodiment of the document reading device according to the present invention, and FIG. 2(a) is a schematic perspective view of a mechanism for switching the color filter of the color filter section shown in FIG. , FIG. 2(b) is a schematic perspective view of another mechanism corresponding to FIG. 2(a). Furthermore, Figure 3 shows how to install multiple reading systems with color filters and branch their optical paths using a half mirror to extract the color-specific information content of a document without controlling the insertion of color filters. This is what I did. Further, FIG. 9 is a schematic circuit diagram when the reading apparatus of FIGS. 1 and 3 is used to remove contents of an arbitrary color original and send out a circular. It should be noted that the same parts in each figure will be described with the same reference numerals.

In the figure, an imaging lens 3 is disposed on the right side of the document surface l of the document reading device, and an optical image of a charge-coupled element ('C, C0D), etc., which is a light receiving sensor, is further to the right of this lens 3. The element q for converting the image into an electrical signal corresponding to the image is provided as in the conventional case. That is, an imaging lens 3 images the reflected light from the document surface l to be read that reflects light from the document illumination lamp/g, and focuses the image on the charge-coupled device g. The elements disposed between the charge-coupled device 1 and the charge coupled device DA are the same as those of the conventional device. In the first illustrated example,
A color filter section is disposed between the document surface l and the imaging lens 3. This color filter unit is for lens 3.
and the charge-coupled device, or between the document illumination lamp and the document. Further, this color filter is designed so that its color can be changed by a motor 7. Still, the position of the reading system 1 including the lens 3 and the charge-coupled device can be controlled with respect to the sub-scanning direction of the document by the left motor 1.

This color filter part is shown in Figure 2 (a) and Figure 2 (b).
We will further explain using . First, the color filter unit Y shown in FIG. 2(a) is provided with a plurality of color filters of arbitrary colors that can be switched to suitable positions around the circular rotary plate S. A gear g is attached to the periphery of the rotating plate S.
A is engraved.

A hole is bored in the center of the rotary plate 3, into which a rotary plate mounting shaft holder fixed at a suitable position inside the facsimile machine is inserted, and the rotary plate S is attached to the shaft 9. . A rotary gear g that meshes with a gear ga on the peripheral edge of the rotary plate S to rotate the rotary plate S is connected to a color filter switching rotary motor 7 supported at a suitable position on the wall of the facsimile via a rod 7a. connected. In FIG. 2(b), the groove 10 of the grooved slide guide IO is fixedly mounted at a suitable position inside the facsimile machine.
A frame/l in which a plurality of color filters of arbitrary colors are fitted in suitable positions is inserted into a so that it can slide freely in the vertical direction,
With this color filter attachment, a gear 12 is carved in the upper end portion of a protruding piece from which one end of the side frame // in the sliding direction protrudes. The frame // is slid up and down by a motor 7 via a gear 13. By appropriately controlling the rotation of the motor, it becomes possible to switch the color filter B of any desired color. The above-mentioned figures 2(a) and 2(b) are rotary type, respectively.
This figure shows an example of a mechanism for switching the sliding color filter B, which may be a manual type or one using other means such as an electric motor or an electromagnet. Many other mechanisms may be considered, such as the simplest sliding method, in which a prepared plate-shaped color filter is manually inserted and removed from the outside of the facsimile housing.

Further, FIG. 3 has essentially the same function as FIG. 7, but the light reflected from the surface of the original l is 17
The optical path is branched into a plurality of optical path systems through a half mirror, and a color filter unit, an imaging lens 3. A reading system with a load coupling element q is installed. This mechanism requires a reading system having color filters corresponding to the number of colors in order to remove the information content of the document, but no longer requires a mechanism for replacing filters.

FIG. 9 is a block diagram of the basic configuration of an embodiment of a facsimile broadcast sending device using the reading system of FIG.
The pixel information obtained by the charge-coupled device gate is sent to the threshold setting circuit 1.
9, the document information with unnecessary color content is removed and stored in the memo IJ 2 / via the control circuit 20. At this time, for one same document, the reading system is scanned by the motor 15 in the sub-scanning direction without changing the filter, and the pixel information for one document is stored in the memo IJ, ! / is stored in /. Next, the filter is replaced by a filter of another color using the motor 7, and the pixel information corresponding to the color of the filter is set to a threshold while performing sub-scanning from the beginning of the document using the motor 13 in the same way without changing the document position. While being removed by the circuit iq, the pixel information is stored as another image in a memory area other than the previous one via the control circuit 20. After repeating the same operation a number of times corresponding to the number of colors to be deleted from the original content, the control circuit 20 connects the line to the line of the sending destination, and the pixel information for several subsheets of memory is stored. The information is transmitted sequentially or simultaneously to multiple destinations through network controllers and modems. In addition, in Figure 9, the first
Although this embodiment uses the reading device shown in the figure, the reading device shown in FIG. 3 can be used in the same way by slightly changing the block diagram. ′-! FIG. 9 shows an embodiment, and in addition, hardware or software,
Many other forms of notification device are possible. Also,
The device of the present invention can be used not only as a communication device but also as a general single communication type facsimile transmission device, in which case the memory for storing pixel information is not necessarily necessary and can be used as a simple buffer. It can be replaced. Further, the motor 7 for replacing the filter is not necessarily necessary, and manual replacement operation is also possible. Still, in the sub-scanning direction, instead of scanning the reading system l, the document l
There is basically no change even if the original is scanned, but in this case, it is necessary to manually or automatically set the same original at the beginning of the sub-scanning every time the color filter is replaced. In addition, in the explanation of the figures above, color filters are prepared for each color of information that does not need to be transmitted, and a threshold value is set each time. Figure 1 shows the three types of filters red, green, and blue, and Figure 3 shows the filters corresponding to the same three colors and the three types of branched filters. By simply installing a reading system and calculating the signals obtained from the reading system, it is theoretically possible to sort out the color-based contents of an almost infinite number of colored documents.

The operation of this embodiment configured as described above will be explained below.

In FIG. 1, when sending a facsimile signal, illumination lamp /4 is turned on, and a color filter that transmits light of the same color as the unnecessary information contained on document surface l is passed from the document illumination lamp /g through document l to CCDq. If a filter is inserted between the document CCDs, the light reflected from the document surface L will pass through the color filter, and if a filter is inserted between the document CCDs, the light reflected from the document surface will pass through the color filter. Since the illumination light passes through the above filter, among the images formed on the charge-coupled device q, for an image of the same color as the color filter, the relative color of the part where the image exists and the part where the image does not exist is The intensity of the degree decreases. Therefore, by appropriately setting the threshold value of the detected signal, it is possible to remove only the image information of the same color as the color filter from the image formation diagram.

Now, by preparing several colors of color filters and replacing them one by one or a combination of multiple filters in the optical path alternately in the color filter section, unnecessary image information of any color can be removed from the original image. It can be removed. The present invention can also be applied to a so-called digital copying machine, which has a document reading section essentially similar to a facsimile machine and scans an electrophotographic photoreceptor by modulating a laser beam based on the document reading signal. . However, as a filter,
For example, in addition to replacing solid objects such as colored glass or plastic, you can attach a transparent box-like object as a color filter section and fill it with colored liquids or gases such as water or oil. Another possible method is to put water in the tank and replace the liquid or gas. This can be applied not only to the color filter of the present invention but also to all color filters for other uses.

As explained above, according to the present invention, there is an effect that unnecessary information written in an arbitrary color and not required to be transmitted can be easily removed from a document. As a result, when adding content that does not need to be sent to a manuscript, it is possible to use a certain dark arbitrary color, and for that reason, it is possible to make the transmitted manuscript easier to see, or in the case of a received manuscript, it is possible to use the same color as other necessary information. Since the unnecessary information that should be reproduced is not reproduced, it becomes much easier to see, and advanced facsimile machines that compress information by encoding have ripple effects such as shortening the time it takes to send out unnecessary information. Additionally, in the past, it was difficult to send and receive documents that were written in dropout colors and needed to be sent, as figures and characters were missing, but it is possible to use color filters other than dropout colors. Additionally, it also has the effect of making it possible to perform reliable transmission and reception.

[Brief explanation of the drawing]

FIG. 1 is a schematic cross-sectional view of an embodiment of the document reading device according to the present invention, and FIG. 2(a) is a schematic perspective view of a mechanism for switching the color filter of the color filter section shown in FIG. , FIG. 2(b) is a schematic perspective view of another mechanism corresponding to FIG. 2(a). FIG. 3 is a schematic cross-sectional view of an embodiment of a document reading device having a mechanism other than that of FIG. 1, and FIG. 9 is a system block diagram of an embodiment of a notification device using the reading device of the present invention. l...Document surface...Color filter section 3...Lens q...Light receiving sensor (charge coupled device) Left...Rotary plate B...Color filter 7...Motor g... Rotating gear ga...Gear 9...Shaft 10...Guide//...Frame 12...Gear/3...Gear 1g...Lamp/S...Motor l... Reading system 17...Half mirror 1g...Motor control circuit section 19...Threshold value setting circuit section 20...Control circuit 21...Memory 22...Network control and modem group Fig. 1 Fig. 2 (a)

Claims (1)

[Claims] In a facsimile circular transmission device that images light from the surface of a document to be read onto a light-receiving sensor using an imaging lens, reads the image of the document surface, and transmits the image, the image is transmitted from the document illumination lamp through the document surface to the light-receiving sensor. It is possible to insert a color filter corresponding to the color of the unnecessary information contained in the document surface into the optical system path leading to the document surface, or the optical path is divided into multiple reading optical paths and each optical path has a different color. A facsimile circular transmission device characterized by disposing color filters.