JPS61182372A - Digital recorder - Google Patents

Abstract

PURPOSE:To attain directly partial position change of picture information on an original and generation of a secret document by providing a transfer order designating means. CONSTITUTION:A memory (ROM) 23 inputs an address signal 221 for write operation outputted from a counter 22 to an address input terminal, converts it properly and outputs a different address signal 231 from the signal 221 and is a transfer order designation means of a picture signal. Thus, the position of the picture information 2 on the original 1 is changed and a copying picture 4 is recorded on copying paper 5.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a digital recording apparatus that reads image information on a document and obtains a copy image corresponding to the image information as a digital signal.

"Conventional technology".

In general, a copying machine is used to make a copy of an original as it is, or to make a copy that has been enlarged or reduced at an appropriate reduction ratio.

On the other hand, when creating a document that includes a mixture of documents and drawings, for example, a copy of the drawing is cut and pasted into the document that has been typed in a predetermined layout, and the composition or layout is reconsidered. There are many things.

Such cutting and pasting work involves copying drawings and the like many times, or cutting and pasting and then making further copies.

``Problems to be Solved by the Invention'' However, such work is extremely complicated, and repeated copying may lead to deterioration in image quality.

Using a so-called word processor, documents and drawings can be freely moved and reedited on the display. However, devices that have the ability to process a mixture of text and image data are extremely expensive and not common. Moreover, there is a drawback that the data input work is not always easy.

Separately, when storing confidential documents, various methods have been developed to color originals and text in special colors to prevent unauthorized copying.

However, if such a method is made public, a method to overcome this problem and perform copying will also be devised.

The present invention has been made with attention to the above points, and its first object is to provide a digital recording device that can obtain a copied image by partially exchanging the position of image information on a document.
The purpose of

Further, the present invention provides, by such partial position exchange,
Copied images whose meanings cannot be read as they are are obtained, and since copying conditions can be set specifically for each copying machine, the image information on the original cannot be reproduced unless it is copied with the copying machine that made the copy. A second object is to provide a digital recording device.

"Means for Solving the Problems" The digital recording device of the present invention includes an image reading section that optically reads image information on a document pixel by pixel and converts it into an electrical image signal, and a It consists of an image signal processing section that stores and transfers the information, and a recording section that uses the image signals transferred from the image signal processing section to record a copy image on copy paper that corresponds to the image information on the original. In the image signal processing section, the image signal processing section is provided with transfer order designating means for changing the transfer order of the image signals so that one part of the copy image and another part are recorded with their positions exchanged.

For example, a memory for storing image signals is provided in the image signal processing section. Then, the transfer order specifying means outputs an address signal for writing an image signal to this memory. During the image signal read operation, an address signal different from the address signal output during the write operation is supplied.

That is, part of the write operation address signal is exchanged in order and position, and is used as the read operation address signal.

"Operation" As a result, the digital recording apparatus of the present invention allows the image information 2 on the original 1 to exchange positions as shown by the arrow 3, for example, as shown in FIG. 14(A). Diagram (B)
As shown in FIG. 2, a copy image 4 is recorded on copy paper 5.

In this way, the ability to exchange partial positions of image information on a document using a digital recording device not only diversifies the uses of the digital recording device, but also enables the exchange of partial positions of image information on a document as shown in FIG. image information 2 is copied using this digital recording device, and the first copied image 4. The image information 2 on the original is discarded and saved. Since this copy image 41 has been partially exchanged in position, its meaning is unclear as it is, and it can be kept confidential even if someone sees it. This copy image 4. When you actually use the data, copy it again using this digital recording device. As a result, a copy image 42 is obtained, and image information on the original document can be restored.

"First Embodiment" (Block Description) FIG. 1 is a block diagram showing a first embodiment of the digital recording apparatus of the present invention.

This digital recording device includes an image reading section 11, an image signal processing section 12, and a recording section 13.

As shown in the figure, the image reading unit 11 forms an image of the image information 2 on the original 1 on the reading surface of a solid-state image sensor 11z made of an image line sensor or the like using an optical system 118 made of a lens or the like. This is a device that optically reads image information pixel by pixel and converts it into an electrical image signal. The solid-state image sensor fiz sequentially reads the image information 2 pixel by pixel in the direction of arrow 113 (main scanning direction). During this reading operation, the document l is transported at a predetermined speed in the direction of arrow 11.0 (sub-scanning direction). Therefore,
After the solid-state image sensor 112 finishes reading one line, the next line to be read is the line immediately below and adjacent to that line. Then, the same reading operation is repeated to finish reading the entire image information on the document. Image signal 1 read and photoelectrically converted in this way
41 is serially outputted from the image reading section 11 one pixel at a time. This image reading section is generally well known for use in digital recording devices.

The recording unit 13 serially receives the image signal 142 transferred from the image signal processing unit 12 one line at a time, stores it in the shift register driver 131, and outputs the image signal 142 from the thermal head 13. This is a device that performs recording corresponding to the image signal. The recording operation by the thermal head 13□ is
, line by line at once, and at the same time, the copy paper 5 is transported in the direction of arrow 133 (sub-scanning direction). thus,
Copy image 4 corresponding to image information 2 on original 1 is on copy paper 5
recorded above. Such a recording section also has a configuration well known from facsimile machines and the like.

The image signal processing section includes two line buffers 21.21, which can store image signals for one line in address order. ．． 2L
It is equipped with This line buffer 211.212
The address signal 22 . for the write operation is sent from the counter 22 . and an address signal 23 . for read operation from the memory 23 . is supplied. Selector 2 is provided at the input end and output side of the line buffer, respectively.
4.25 is inserted, and address signals 221 and 2
Selectors 26I and 262 are also inserted into the transmission path of 31.

When one line buffer 21 is performing a write operation, these selectors select the other line buffer 21 . The two line buffers 211121z can be connected to the image reading section 11 or the recording section 13, and the supply of necessary address signals can be selected so that write operations and read operations can be repeated alternately, such as when the line buffers 211121z perform read operations. The selection operation is controlled by a timing control circuit (not shown).

The memory (ROM) 23 is composed of a storage element such as a random access memory or a read-only memory, and inputs an address signal 221 for write operation output from the counter 22 to its address input terminal. ,
As will be explained later, the address signal 23+ is converted as appropriate and a different address signal 23+ is output. This is the means for specifying the transfer order of image signals in the present invention.

(Write Operation) FIG. 2 shows one line buffer 21 of the image signal processing section 12 shown in FIG. is a main part block diagram for explaining an operation when a write operation is performed. In the figure, all blocks that are not directly related to this operation are omitted.

When the image signal processing unit 14 for one line is output from the image reading unit 11, the counter 22 counts up in ascending order from, for example, “1” in synchronization with this, and outputs the address signal 22.
．． Output. This address signal 22. In response to this supply, the line buffer 21+ stores one line worth of image signals 141 in this address order.

Line buffer 21. While performing the above write operation, the line buffer 21□ in FIG. 1 is performing a read operation. Then, line buffer 21. When the write operation is completed, the selectors 24, 25, 26+, 2
6z are switched all at once, and the line buffers 21.
performs a read operation, and the line buffer 21. is in a state where it performs a write operation.

(Reading operation) FIG. 3 shows the line buffer 21. FIG. 3 is a block diagram of main parts when the device is performing a read operation.

During a read operation, when the counter 22 counts up from, for example, "1" in ascending order and outputs an address signal 22+, the memory 23 receives an address signal 22+ that has a one-to-one correspondence and has a different content. Signal 23.
Output. Upon receiving this address signal 231, the line buffer 21 sequentially sends the image signals 14, .
is output to the recording section 13.

The contents of the memory 23 are as shown in FIG. 4, for example. In the figure, numbers are shown in decimal notation for convenience.

In this example, the address and data content match almost all the numbers, but data "5" is written to address "2" and data "2" is written to address "5". .

That is, the memory 23 stores "1", "2", "3'"
When the address signal 22. is input as ``'..., ``9''..., in response, ``2'' and ``5'' are input.
An address signal is generated and output with the contents of `` and `` having their positions exchanged. Of course, not only one set but two or more sets of data may have their positions exchanged with each other.

(Operation of Apparatus) FIG. 5 shows an example of an image signal exchange operation when a write operation and a read operation are performed using the memory in which the data shown in FIG. 4 has been written.

The part corresponding to the second pixel of the image signal 141 inputted to the image signal processing section is outputted as the image signal 142.
It is replaced with the part corresponding to the fifth pixel.

FIG. 6 shows that the image signal processing section 12 (FIG. 1) operates in this way.
It shows the relationship between image information 2 on a document and a copy image 4 obtained when the transfer order of image signals is changed.

In the case of this figure, an example is shown in which image signals corresponding to the pixels at the positions of the broken line arrow 30 and the solid line arrow 31 of the image information 2 on the original document are exchanged.

In this figure, it is assumed that the size and position of the pixel match the thickness and position of the vertical line 32.

Further, FIG. 7 shows an example in which such position exchange is performed in units of four pixels. When such an IJ hook-level exchange is performed, for example, when handling image information that includes a character consisting of 4 pixels vertically and 4 pixels horizontally, the position of the character will be exchanged as shown in Figure 8. be exposed. In this case, the characters must be accurately included in each matrix, but this is fully possible when handling image information on a document in which characters are arranged in an orderly manner vertically and horizontally, such as a typed document.

In Figure 9, the image signal for one line is divided into two at the center,
This shows a case where the image signals corresponding to the left and right pixels are exchanged as shown by the arrows. In this case, as shown in FIG. 1O, the image information 2 on the original and the copied image 4 are reversed left and right, and a so-called mirror image is obtained.

FIG. 15 shows the first copy image 4. After that, this copy image 4I is used as a manuscript, and the same process is performed to create a second copy image 42.
Show where you got it.

4. Copied images with the same content as the image information on the manuscript by copying twice in total. It can be seen that the following can be obtained. In this case, it is necessary to accurately align the paper, etc. for copying work. However, in the case of a document that is typed vertically and horizontally in an orderly manner with wide character and line spacing, a slight positional shift has little effect.

"Second Embodiment" FIG. 11 shows another embodiment of the present invention, in which the line buffer 21 . Alternatively, instead of 212, a page memory 40 capable of storing image signals for one page is used.

As address signals for this page memory 40, the outputs of the counter 41, the counter 42, or the memory 43 are used regularly. The selector 44 is for switching between the write operation and the read operation explained in FIG. The signal output from the counter 41 is supplied to the lower bits 46 of the page memory. The signal output from the memory 43 is then supplied to the upper pit 47 of the page memory 40. At this time, the procedure for exchanging the output signal of the counter 42 with the memory 43 is the same as that described in FIG. 3.

The image signal processing section having such a configuration receives the image signal 14. for each line. When input, the counter 42 counts up one line at a time from "l", and the counter 41 counts up image signals corresponding to one life in order from "1" and clears them to zero immediately before inputting the next line. Repeat. When the image signals for one page are stored in this way, the write operation is switched to the read operation.

In the read operation, as explained in FIG. 4, an address signal in which part of the output of the counter 42 is exchanged is supplied from the memory 43 to the lower bits 47.

In this case, the address signals supplied by the memory 43 are for exchanging the positions of the lines. Therefore, for example, the first
As shown in FIG. 2, the line indicated by the broken arrow 30 (black horizontal line) is exchanged with the line indicated by the solid arrow 31 (white horizontal line) and copied.

Of course, it is also possible to adopt the method shown in FIG. 7 or FIG. 9 for this embodiment.

"Third Embodiment" FIG. 13 shows a further development of the embodiment shown in FIG. 11.

Here, the upper bit 4 of the address of the page memory 40
A counter 42 and a memory 43 that supply the lower pit 46 and a counter 52 and a memory 53 that supply the lower pit 46 are provided.

These memories 43.53 are also combined with counters 52.42 and selectors 54.44, and operate in the same manner as shown in FIG.

In this way, the upper bit 47 that controls the line order and the 1
If means for specifying the transfer order of image signals is provided in both of the lower pits 46 that control the order of image signals in a line, for example, as shown in FIG. A copy image 4 can be obtained in which the part is replaced with another part.

Note that both the embodiment shown in FIG. 11 and this embodiment use a page memory, but this page memory can be replaced with a memory whose address space is reduced by parallel-to-serial conversion and its peripheral circuits, if necessary. Can be done.

"Modified Example" The digital recording device of the present invention is not limited to the above embodiment.

For example, as shown in FIG. 16, a memory 61 with various contents
64 are inserted in parallel between the counter 65 and the selector 66, and the selection of this memory is instructed from the operation panel 67, whereby various copy modes can be selected simply by pressing the switch 68.

In this example, the inversion shown in Fig. 10 (copying a mirror image by 1 frame), the row exchange shown in Fig. 12, the column exchange shown in Fig. 6, and the combination of these are used to create a secret document, etc. The operation panel was configured so that the special copy mode to be used could be selected.

For changes to lines or examples to be replaced, or for requests for copying in a variety of ways, a keyboard is provided for that purpose,
It may also be possible to allow the ROM to be replaced. If this ROM has unique contents for each copying machine, it will be impossible to restore a secret document as shown in FIG. 15 using other copying machines.

Also, use a micro combination instead of a counter! .

The memory may be used in combination with random access memory to serve a wide variety of copying requests.

Further, if the counters of the embodiments described above can be switched between two modes, count-up and count-down, mirror image copying, etc. can be performed without using a memory.

Furthermore, in the above embodiments, the address signal is processed during the read operation to change the transfer order of the image signals.
It goes without saying that the same effect can be obtained even if the address signal is processed during the write operation.

"Effects of the Invention" As explained above, according to the digital recording device of the present invention, it is possible to directly exchange partial positions of image information on a document and create a secret document, and the use of a copying machine can be improved. It can be enlarged and the work of creating various documents can be facilitated. By setting a unique copy mode for each copying machine, it is possible to strictly control the creation and restoration of secret documents.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a first embodiment of the digital recording device of the present invention, FIG. 2 is a block diagram showing the main parts for explaining the writing operation, and FIG. 3 is the main part for explaining the reading operation. Fig. 4 is an explanatory diagram showing the contents of the memory, Fig. 5 is an explanatory diagram showing an example of the image signal exchange operation, and Fig. 6 is an explanatory diagram showing the image information on the original and copying at this time. FIG. 7 is an explanatory diagram showing another example of the image signal exchange operation; FIG. 8 is a plan view showing the relationship between the image information on the original document and the copied image; and FIG. 9 is a plan view showing the relationship between images. 10 is an explanatory diagram showing another example of the image signal exchange operation, FIG. 10 is a plan view showing the relationship between the image information on the original document and the copied image, and FIG. FIG. 12 is a plan view showing the relationship between the image information on the original document and the copied image, and FIG. 13 is a block diagram of the main part showing the second embodiment of the present invention, and FIG. 13 is a third embodiment of the digital recording apparatus of the present invention FIG. 14 is a plan view showing the relationship between the image information on the original and the copied image, and FIG. 15 is an explanation showing how to create a confidential document using the digital recording device of the present invention. figure,
FIG. 16 is a block diagram of the main parts showing a modification of the digital recording device of the present invention. 2... Image information on the original, 4... Copied image, 11... ... Image reading section, 12 ... Image signal processing section, 13 ... Recording section, 23 ... Transfer order designation means. Applicant: Fuji Xerox Co., Ltd. Reason
Patent Attorney Ume Yu Yamauchi 1st
Figure 2 Figure 4 Figure 6 Figure 7 Figure 8 Figure 10 Figure 12 Figure 13 Figure 14 Figure 16

Claims (1)

[Claims] 1. An image reading unit that optically reads image information on a document pixel by pixel and converts it into an electrical image signal, and an image signal that performs processing to store and transfer this image signal. The image signal processing section comprises a processing section and a recording section that records a copy image corresponding to the image information on the document onto copy paper using the image signal transferred from the image signal processing section. . A digital recording apparatus, further comprising transfer order designating means for changing the transfer order of the image signals so that one part of the copy image and the other part are recorded with their positions exchanged. 2. The image signal processing section is provided with a memory for storing image signals, and the transfer order specifying means supplies an address signal different from the address signal supplied during the image signal write operation to this memory during the read operation. A digital recording device according to claim 1, characterized in that it provides a digital recording device.