JPH0822536A - Electronic filing system - Google Patents

Abstract

PURPOSE:To efficiently register picture information of a double side document in a short time. CONSTITUTION:A double side picture reader 1 reads picture information on the front face and the rear face of the document by the control of a CPU 11 and outputs picture information on the front race to a system main body part 3 and stores that on the rear face in an internal buffer memory 10 having one-page capacity. The system main body part 3 temporarily stores picture information on the front race, which is outputted from the double side picture reader 1, in an internal buffer memory 16 by the control of a CPU 14 and compresses it by a data compression/expansion processing part 17 and stores it in a CPU bus memory us and registers it in a picture storage part 2 and reads picture information on the rear face, which is stored in the buffer memory 10 in the double side picture reader 1, into the internal buffer memory 16 and compresses it in the same manner and registers it in the picture storage part 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double-sided image reading apparatus which conveys an original and reads images on its front and back sides, and an image storage section for registering and holding the read image information.
The present invention relates to an electronic filing system including a system main body that controls the registration of image information read by a double-sided image reading device in an image storage unit.

[0002]

2. Description of the Related Art In recent years, system main bodies such as workstations and personal computers, image reading devices such as scanners, image storage devices such as magneto-optical disk devices, floppy disk devices and hard disk devices, and C
An electronic filing system including an image display device such as an RT display and an LCD display is widely used.

Such an electronic filing system is
The image of the original is read by the image reading device and converted into an image signal, and the image information based on the image signal is output to the system main unit. The system main unit compresses the image information and outputs it to the image storage device. The device stores the image information received from the system main body in a recording medium such as a magneto-optical disk and registers it.

The image information registered in the image storage device can be reproduced and re-recorded by the read / write control process of the system main body. Therefore, it is possible to register image information such as a document, retrieve and read out the information at any time, display it on a display device, or print out on paper by a printing device.

When the electronic filing system is equipped with an automatic document feeder (abbreviated as "ADF") in the image reading device, a plurality of documents can be automatically fed to the image reading device. That is, the images of a plurality of originals can be continuously read by repeatedly and continuously operating the paper feed processing, the image reading processing, and the paper discharge processing of the originals set on the ADF. it can.

Therefore, when the image information of a plurality of originals is automatically registered, a plurality of originals to be registered are set in the ADF, and the respective originals are sequentially conveyed to the image reading device,
When the image reading device reads the image information of each original document and outputs the image information to the system main body, the system main body can sequentially output the respective image information to the image storage device to be registered.

However, since the above-described image reading apparatus can read only one side of an image in one image reading operation, the images of a two-sided original having information written on both sides are printed in order of front and back (page number). In the case of registration in the order), after the image on the front side of one original has been read, the operator must reverse the front and back of the original and set it again, and then read the image on the back side. Therefore, when registering the image information of many double-sided originals,
It took a very complicated work, and it took time to register the image information.

Therefore, conventionally, when registering the image information of a double-sided original, first, the images on the front surface of each original are continuously read, and then the images on the back surface of each original are continuously read to read the front page. A device capable of alternately rearranging images and images of pages on the back side and registering them in page order, and registering the images on the front and back sides of a document in the correct page order (for example, Japanese Patent Laid-Open No. Hei 2).
-140878 and Japanese Patent Application Laid-Open No. 4-257978) are proposed.

[0009]

However, in the above-described conventional apparatus, after the images on the entire front surface of a plurality of originals have been read, the originals are inverted and the images on the back surface of each original are read continuously. Therefore, when registering multiple documents in succession, the work of reversing the original must be performed for each document, which complicates the operation of the operator, and the time required to register image information of multiple documents. There was a problem that it took.

Further, since it is possible to read only the image on one side of the document at one time (conveyed once), it takes time to read each image on both sides of a large number of documents, and it takes time to register the image of the document. There was also the problem that it took time. Further, since it is necessary to perform a process of rearranging the front side image and the back side image alternately, there is also a problem that it takes time to register the image information of one document.

The present invention has been made in view of the above points, and an object thereof is to enable image information of a double-sided original to be registered efficiently in a short time.

[0012]

In order to achieve the above-mentioned object, the present invention provides a double-sided image reading device which conveys a document and reads images on the front and back sides thereof, and image information read by the double-sided image reading device. An electronic filing system comprising: an image storage unit that is registered and held; and a system main body unit that controls registration of image information read by the double-sided image reading device in the image storage unit. A buffer memory having a capacity capable of storing at least one page of image information of a document is provided in the system main body.

Means for outputting image information of one side of the document to the system main body and storing the image information of the other side in an internal buffer memory when the image of the document is read by the double-sided image reading apparatus. The image data of one side output from the double-sided image reading device is temporarily stored in an internal buffer memory in the system main body section, data is compressed, and is registered in the image storage section. It is preferable to provide a means for reading the image information of the other surface stored in the buffer memory in the image reading device into the internal buffer memory, compressing the data, and registering the data in the image storage unit.

Further, the above-mentioned double-sided image reading device is provided with a buffer memory having a capacity capable of storing image information for three pages of an original, and image information on the front and back of the original is read and stored in the internal buffer memory. A means for reading out the image information from the buffer memory and outputting the image information to the system main body is provided, and the system main body stores the image information of the front surface and the back surface of the document output from the double-sided image reading device in the internal buffer memory. A means for registering the image in the image storage unit after sequentially storing and compressing the data may be provided.

Furthermore, it is preferable that the double-sided image reading device has means for providing an empty area in the buffer memory when outputting the image information stored in the internal buffer memory to the system main body.

Further, when an error occurs when the image information is registered in the image storage unit in the system main body unit, the image information that cannot be stored is read again from the buffer memory of the double-sided image reading apparatus. Should be provided.

[0017]

The electronic filing system according to the present invention is
A double-sided image reading apparatus that conveys a document and reads images on the front and back sides of the document, and a system main unit that controls the registration of the read image information in the image storage unit, each have at least one page of image information of the document. Since a buffer memory with a capacity to store the data is provided, the double-sided image reading device reads the images on the front and back sides of the original in one conveyance of the original, and the image information on one side is stored in the buffer memory in the system body. The image information of the other side can be stored and stored in the buffer memory in the double-sided image reading apparatus.

Therefore, the operator can read the images on the front and back sides of a plurality of originals in a short time without reversing the originals, and the system main body section can sequentially register the respective image information in the image storage section. Images on both sides of a document can be automatically and efficiently registered in a short time.

Further, the double-sided image reading device outputs the image information of one side of the original to the system main body when reading the image of the original, stores the image information of the other side in the internal buffer memory, and stores the image information in the system. The main unit temporarily stores the image information of one side output from the double-sided image reading device in an internal buffer memory, compresses the data, and registers it in the image storage unit. By reading the image information of the other side stored in the memory into the internal buffer memory, compressing the data, and registering it in the image storage unit, each image of the front and back sides of the original read by the double-sided image reading device can be read. Information can be sequentially compressed by the system main unit and registered in the image storage unit. Therefore, the images on both sides of the original can be automatically registered in a short time and efficiently while saving the storage capacity.

Further, the double-sided image reading apparatus is provided with a buffer memory having a capacity capable of storing image information for three pages of the original, and the image information of the front and back of the original is read and stored in the internal buffer memory. The image information is read from the buffer memory and output to the system main unit,
In the case of the above, if the system main body stores the image information of the front side and the back side of the document output from the double-sided image reading device in the internal buffer memory sequentially and compresses the data, and then registers it in the image storage unit. Similarly, the respective image information of the front surface and the back surface of the original read by the double-sided image reading apparatus can be sequentially compressed by the system main unit and registered in the image storage unit.

In addition, since the image information can be held in the double-sided image reading apparatus until the image information read from the original is registered, the held image information is reused at the registration error and the data is re-read. It can be compressed and registered.

Furthermore, when the double-sided image reading device outputs the image information stored in the internal buffer memory to the system main body, if the buffer memory is provided with an empty area, the read image information can be managed. It becomes easier, and the image information of the newly read next original can be stored in the empty area. Therefore, the memory area of the buffer memory of the double-sided image reading device can be effectively utilized.

If an error occurs when the image information is registered in the image storage unit, the system main unit reads the image information that could not be stored again from the buffer memory of the double-sided image reading apparatus. It is not necessary to read the image of the original again at the time of registration error, the image information read once can be reused, and the image information that cannot be stored can be re-compressed and registered.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an electronic filing system which is an embodiment of the present invention. This electronic filing system is a double-sided image reading apparatus 1 such as a double-sided scanner that conveys an original and reads images on the front and back sides of the original almost simultaneously, and the double-sided image reading apparatus 1 thereof.
An image storage unit 2 which is a magneto-optical disk storage device for registering and holding image information read by the system, and a system body unit 3 for controlling registration of the image information read by the double-sided image reading device 1 in the image storage unit 2. Consists of.

In addition, the system body 3 includes a keyboard 4 as an input device and a pointing device 5 such as a mouse.
A display device 6 such as a CRT or LCD is connected to a printer 7, which is a printing device such as a laser printer, an inkjet printer, or a dot printer.

The double-sided image reading apparatus 1 is internally provided with a light source and a line image sensor (CC
In addition to the image reading means (not shown) such as D), a buffer memory 10 and a CPU 11 are provided, and the buffer memory 10 is a memory having a capacity capable of storing image information for one page of a document.

The CPU 11 is a microcomputer which controls the double-sided image reading apparatus 1 and
When reading an image of a document, it serves as a means for outputting the image information of one side of the document to the system body 3 and storing the image information of the other side in the internal buffer memory 10.

The image storage unit 2 includes a magneto-optical disk 12 which is a recording medium for recording image information and the like therein, and a magneto-optical disk drive 13 which controls writing and reading of image information and the like to and from the magneto-optical disk 12. The image information read by the double-sided image reading device 1 is registered and held in the magneto-optical disk 12.

The system main body 3 is internally provided with a CPU 14,
A CPU bus memory 15, a buffer memory 16, a data compression / expansion processing unit 17, a CPU bus 18, and an image bus 19 are provided.

The CPU 14 is a microcomputer, and controls the system body 3 and the double-sided image reading apparatus 1
The registration control of the image information read by the image storage unit 2 is controlled, and the image information of one side output from the double-sided image reading apparatus 1 is temporarily stored in the internal buffer memory 16 and data compression is performed. A unit for registering in the image storage unit 2 after reading the image information of the other face stored in the buffer memory 10 in the double-sided image reading device 1 into the internal buffer memory 16 after data registration in the unit 2 Fulfill the function of.

The CPU bus memory 15 is a memory for storing the image information which is data-compressed by the data compression / expansion processing section 17. The buffer memory 16 is a memory having a capacity capable of storing image information for one page of a document, and stores the image information output from the double-sided image reading apparatus 1 and the image information expanded by the data compression / expansion processing unit 17. It is a memory for storing.

The data compression / expansion processing unit 17 performs data compression processing on the image information stored in the buffer memory 16 based on a predetermined method and data expansion of the image information stored on the CPU bus memory 15.

The CPU bus 18 is a communication line for exchanging data among the CPU 14, the CPU bus memory 15, the data compression / expansion unit 17, the keyboard 4, the pointing device 5, and the magneto-optical disk drive 13.
The image bus 19 includes a CPU 11 and a buffer memory 1
6, a data compression / decompression unit 17, a display device 6, and a communication line for exchanging data among the printer 7.

Next, a registration process of image information in this electronic filing system will be described. FIG. 2 is an explanatory diagram showing a process of successively reading and registering image information on both sides of a plurality of originals. The double-sided image reading device 1
Scan the image on the front side (first page) and the image on the back side (second page) of the first document, and step (indicated by "S" in the figure)
In step 1, the image information of the surface is output to the system main body 3. At the same time as step 1, step 2 stores backside image information in the internal buffer memory 10.

The system body 3 is a double-sided image reading device 1.
The image information of the front side (first page) of the first original output from the first original is stored in the buffer memory 16 via the image bus 19, and the first original stored in the buffer memory 16 by the data compression / expansion unit 17 in step 3. The image information of the front side (first page) of the eye is stored in the CPU bus memory 15 after data compression, and in step 4, the back side of the first document stored in the buffer memory 10 of the double-sided image reading apparatus 1 (2
The image information of the (page) is read and stored in the buffer memory 16 via the image bus 19.

Further, in step 5, CPU bus memory 1
The image information of the front side (first page) of the first document, which is data-compressed and stored in 5, is output to the image storage section 2 through the CPU bus 18, and in step 6, the buffer memory 1
The image information of the back side (second page) of the first original stored in 6 is stored in the CPU bus memory 15 after data compression, and the data-compressed first original stored in the CPU bus memory 15 in step 7. The image information on the back surface (second page) of the above is output to the image storage unit 2 via the CPU bus 18.

The image storage unit 2 is the system main unit 3
The image data of the front side (first page) and the back side (second page) of the first document, which is data-compressed and sequentially output from the above, is output by the magneto-optical disk drive 13 to the magneto-optical disk 12.
Please write to and register.

On the other hand, in the double-sided image reading apparatus 1, when the image information of the back side (second page) of the first document stored in the internal buffer memory 10 is read by the system body unit 3, the front side (3) of the second document is read. Page image) and back side (4
The reading of the image of the (page) is started, and in step 8, the image information of the surface is output to the system main body 3. Further, at the same time as step 3 and step 9, the back side image information is stored in the internal buffer memory 10.

The system body 3 is a double-sided image reading device 1.
The image information of the front surface (third page) of the second original output from the first original is stored in the buffer memory 16 via the image bus 19, and the second original stored in the buffer memory 16 by the data compression / expansion unit 17 in step 10. The image information on the front surface (third page) of the eye is stored in the CPU bus memory 15 after data compression, and in step 11, the double-sided image reading apparatus 1
Image data of the back side (4th page) of the second document stored in the buffer memory 10 of
9 to store in the buffer memory 16.

Further, in step 12, the image information of the data-compressed front surface (third page) of the second document stored in the CPU bus memory 15 is output to the image storage section 2 via the CPU bus 18, The image information of the back side (4th page) of the second original stored in the buffer memory 16 in step 13 is compressed and then stored in the CPU bus memory 15, and in step 14, the data stored in the CPU bus memory 15 is compressed. The image information of the back surface (4th page) of the second document thus produced is output to the image storage unit 2 via the CPU bus 18.

Then, the image storage unit 2 outputs each image information of the front side (third page) and back side (fourth page) of the data-compressed second document sequentially output from the system main body section 3 to the magneto-optical disk drive. Magneto-optical disk 12 by 13
Write in to register and hold. In this way, the above process is repeated for all the originals set in the double-sided image reading apparatus 1.

In the electronic filing system of this embodiment, each image on the front surface and the back surface of a document is read by the double-sided image reading device 1 at a time, and the image information of each image information is sequentially compressed by the system main unit 3 to be stored in the image storage unit 2. The image of each page of a document composed of a plurality of double-sided originals can be automatically and efficiently registered in a short time.

Next, another embodiment of the present invention will be described. The configuration of the electronic filing system of this embodiment is the same as the configuration of the electronic filing system shown in FIG. 1, but its internal function is slightly different.

In the electronic filing system of this embodiment, the buffer memory 10 inside the double-sided image reading apparatus 1 has a capacity capable of storing image information for three pages of a document, and C
The PU 11 reads the image information of the front and back sides of the document and stores the image information in the internal buffer memory 10, reads the image information from the buffer memory 10 and outputs the image information to the system main unit 3, and stores it in the internal buffer memory 10. When the generated image information is output to the system main body 3, the buffer memory 10 functions as a means for providing an empty area.

Further, the CPU 14 of the system main body 3 is
A means for sequentially storing in the internal buffer memory 16 the image information of the front surface and the back surface output from the double-sided image reading device 1 and compressing the data, and then registering the image information in the image storage unit 2. When an error occurs during the operation, it serves as a means for rereading the image information that could not be stored from the buffer memory 10 of the double-sided image reading apparatus 1.

Next, the registration processing of image information in the electronic filing system of the embodiment will be described. FIG. 3 is an explanatory diagram showing a process of successively reading and registering image information on both sides of a plurality of originals. Here, since the buffer memory 10 inside the double-sided image reading apparatus 1 stores image information for three pages of a document, three storage areas 10a, 10 having a memory capacity for one page, respectively.
It is divided into b and 10c.

The double-sided image reading apparatus 1 reads the image of the front side (first page) and the image of the back side (second page) of the first document, and at step (indicated by "S" in the figure) 21, the image of the front side is read. Information storage area 1 of internal buffer memory 10
0a and outputs it to the system body 3. At the same time as step 21, the back side image information is transferred to the storage area 10 of the internal buffer memory 10 in step 22.
Store in b.

Then, 1 stored in the storage area 10a
Manage the image information on the front side (first page) of the manuscript number 1
Then, the image information of the back side (second page) of the first document stored in the storage area 10b is managed as the management number 2. At this point, the storage area 10c is still an empty area.

The system body 3 is a double-sided image reading device 1.
When the image information of the front side (first page) of the first original output from the first original is stored in the buffer memory 16 via the image bus 19, the first original stored in the buffer memory 16 by the data compression / expansion unit 17 in step 23. After compressing the image information on the surface of the eye (first page), the CPU
Stored in the bus memory 15.

Then, in step 24, the compressed data of the image information of the front surface (first page) of the first document stored in the CPU bus memory 15 is output to the image storage unit 2, and the magneto-optical disk of the image storage unit 2 is output. The drive 13 writes the compressed data in the magneto-optical disk 12, registers and stores it.

If there is no error in writing the compressed data, the system main unit 3 will read the double-sided image reading apparatus 1
To read the image information of the back side (second page) of the first document.

The double-sided image reading device 1 reads out the image information of the back side (second page) of the first document stored in the storage area 10b of the buffer memory 10 in step 25, outputs the image information to the system main unit 3, and outputs the image information to the buffer. The image information on the front surface (first page) of the first document in the storage area 10a of the memory 10 is excluded from the management target and is set as a free area. That is,
An empty area is provided in the buffer memory 10 when the image information is output to the system main body 3.

The system main unit 3 is the double-sided image reading device 1.
The image information of the back side (second page) of the first original read from the first original is stored in the buffer memory 16 via the image bus 19, and in step 26, the first original stored in the buffer memory 16 by the data compression / expansion unit 17. The image information of the back surface (second page) of the above is compressed and then stored in the CPU bus memory 15.

Then, in step 27, the image information of the back side (second page) of the first original of the compressed data stored in the CPU bus memory 15 is output to the image storage unit 2, and the magneto-optical disk of the image storage unit 2 is output. The drive 13 writes the compressed data in the magneto-optical disk 12, registers and stores it.

The double-sided image reading apparatus 1 outputs the image information of the back side (second page) of the first document to the system main body 3 and then the front side (third page) and back side (fourth page) of the second document. Each image information of the above is read, and the image information of the surface is read in step 28 in the storage area 1 of the internal buffer memory 10.
0a and outputs it to the system body 3.

At the same time as step 28, step 29
The image information on the back side is stored in the storage area 10c of the internal buffer memory 10. Here, the storage area 10b has already been stored.
The image information of the back side (second page) of the first document stored in is stored as management number 1, and the image information of the front side (third page) of the second document newly stored in storage area 10a is stored as management number 2. The image information of the back side (the fourth page) of the second document stored in the storage area 10c is managed as the management number 3.

The system body 3 is a double-sided image reading device 1.
When the image information of the front surface (third page) of the second original output from the first original is stored in the buffer memory 16 via the image bus 19, the second original stored in the buffer memory 16 by the data compression / expansion unit 17 in step 30. After compressing the image information on the surface of the eye (page 3), the CPU
Stored in the bus memory 15.

Then, in step 31, the compressed data of the image information of the front surface (third page) of the second document stored in the CPU bus memory 15 is output to the image storage unit 2, and the magneto-optical disk of the image storage unit 2 is output. The drive 13 writes the compressed data in the magneto-optical disk 12, registers and stores it.

If there is no error in the writing of the compressed data, the system main unit 3 will read the double-sided image reading apparatus 1
The image information of the back side (4th page) of the second document is read.

The double-sided image reading apparatus 1 reads out the image information of the back side (the fourth page) of the second document stored in the storage area 10c of the buffer memory 10 in step 32, outputs the image information to the system main body section 3, and outputs it to the buffer. The image information on the back surface (second page) of the first document in the storage area 10b of the memory 10 is excluded from the management target and is set as an empty area. That is,
An empty area is provided in the buffer memory 10 when the image information is output to the system main body 3.

The system main body 3 is the double-sided image reading device 1.
The image information of the back side (fourth page) of the second original read from the first original is stored in the buffer memory 16 via the image bus 19, and the second original stored in the buffer memory 16 by the data compression / expansion unit 17 in step 33. The image information on the back surface (4th page) of the above is compressed and then stored in the CPU bus memory 15.

Then, in step 34, the image information of the back side (the fourth page) of the second original of the compressed data stored in the CPU bus memory 15 is output to the image storage section 2, and the magneto-optical disk of the image storage section 2 is output. The drive 13 writes the compressed data in the magneto-optical disk 12, registers and stores it.

In this way, the above process is repeated for all the originals set in the double-sided image reading apparatus 1.

In this way, at least two pages of image information of the original are output to the system main unit 3 in the buffer memory 10 in the double-sided image reading apparatus 1 in the first-in first-out method for each original, and when the image information is output. Since an empty area is provided in the buffer memory 10, it becomes easy to manage the image information read from the document, and the necessary minimum timing can be held. That is, the image information read from the original can be held until the image information is registered in the image storage unit 2.

Therefore, when an image information writing error occurs, it is not necessary for the operator to reset the original document, there is no need to read the original image again, and the image information once read can be effectively reused. it can. Further, since the double-sided image reading device 1 may be provided with a buffer memory having a minimum necessary capacity, the buffer memory can be effectively used and the cost of the device can be reduced.

Next, an error recovery process when registering image information in the electronic filing system of this embodiment will be described. FIG. 4 is an explanatory diagram showing an error recovery process when an image information registration error occurs in the process shown in FIG.

When an error occurs in step (indicated by "S" in the figure) 27, the system main body section 3, that is,
If a write error (registration error) occurs when the compressed data of the image information of the back side (the second page) of the first document is written in the magneto-optical disk 12 in the image storage unit 2, the internal buffer memory 16 already stores the error. Although the image information of the front surface (third page) of the second document is stored, step 35
Then, the image information of the back side (second page) of the first document is read again from the storage area 10b of the buffer memory 10 of the double-sided image reading apparatus 1 and is overwritten and stored in the internal buffer memory 16.

On the other hand, in the double-sided image reading apparatus 1, step 2
At the end of 8 and 29, the image information of the back side (the second page) of the first original is still stored in the storage area 10b of the buffer memory 10 and is managed by the management number 1. The image information on the back surface (second page) of the is read and output to the system main body 3.

After that, the system main body unit 3 proceeds to step 3
In 6 the buffer memory 1 by the data compression / decompression unit 17
The image information of the back side (second page) of the first document stored in 6 is stored in the CPU bus memory 15 after data compression, and in step 37, the back side of the first document (page 2) stored in the CPU bus memory 15 is stored. The compressed data of the image information of the eye) is output to the image storage unit 2, and the magneto-optical disk drive 13 of the image storage unit 2 outputs the compressed data to the magneto-optical disk 1.
Write to 2.

FIG. 5 is an explanatory diagram showing error recovery continuation processing when an error occurs again by the error recovery processing shown in FIG. In step 37 of the error recovery processing described above, the back side of the first original (second page) again
When the registration error occurs, the image information of the front surface (third page) of the second original has already been stored in the internal buffer memory 16, but in step 39 the back surface of the first original (second page). Image information is read again from the storage area 10b of the buffer memory 10 of the double-sided image reading apparatus 1 and is overwritten and stored in the internal buffer memory 16.

On the other hand, the double-sided image reading apparatus 1 is still in the storage area 10b of the buffer memory 10 in the back side (2
Since the image information of the first page is stored and managed by the management number 1, the image information of the back side (second page) of the first document is read out and output to the system main unit 3 in step 39.

After that, the system main unit 3 proceeds to step 4
0 means buffer memory 1 by data compression / decompression unit 17
The image information of the back side (second page) of the first document stored in 6 is stored in the CPU bus memory 15 after data compression, and in step 41, the back side of the first document (page 2) stored in the CPU bus memory 15 is stored. The compressed data of the image information of the eye) is output to the image storage unit 2, and the magneto-optical disk drive 13 of the image storage unit 2 outputs the compressed data to the magneto-optical disk 1.
Write to 2.

If no error occurs in the writing of the compressed data, the image information of the front surface (third page) of the second document is read again from the double-sided image reading apparatus 1 and the image information registration processing is continued. To do. The double-sided image reading device 1 also continues the output of image information and the reading process of the image of the document.

In this way, when the writing of the compressed data by the image storage unit 2 becomes an error again, the system main unit 3 reads the image information again from the double-sided image reading apparatus 1 and compresses the data, and again stores the image. An error recovery process for registering image information to be output to the unit 2 is performed.

In this way, the image information can be held in the buffer memory 10 in the double-sided image reading apparatus 1 until the image information read from the original is registered in the image storage unit 2, and a registration error occurs. If the error occurs, the re-registration of the image information can be repeatedly performed without causing the operator to reset the document and without reading the image of the document again. Therefore, it is possible to effectively reuse the image information once read from the original,
Image information can be registered efficiently and in a short time.

In the electronic filing system according to the embodiment of the present invention described above, the double-sided image reading device 1 reads each image on the front surface and the back surface of the original at one time by one conveyance of the original, and sequentially reads the respective image information. Since the data can be compressed by the unit 3 and registered in the image storage unit 2, the image of each page of a document composed of a plurality of double-sided originals can be automatically and efficiently registered in a short time.

When reading images on both sides of the original,
The reading start of the front side and the back side may be slightly shifted,
If the front side is read after the front side is read, the process of reading image information, storing it in the buffer memory, and outputting it from the buffer memory can be performed more smoothly.

If registration is not possible even after performing the above-described error recovery process a predetermined number of times, the registration process is interrupted so that the error recovery process is not needlessly repeated, and the image information registration process is performed. Will not stagnate.

Further, the above-mentioned image storage section 2 may be provided in the system main body section 3, or a separate device may be connected to the system main body section 3. Furthermore, in the above-described embodiment, the case where the image storage unit 2 is the magneto-optical disk device has been described, but the same operation can be performed by using another storage device such as a hard disk device or a floppy disk device.

[0080]

As described above, according to the electronic filing system of the present invention, it is possible to efficiently register the image information of the front and back sides of a double-sided original in the order of pages in a short time. Further, the buffer memory for storing the image information of the front surface and the back surface of the double-sided original can be effectively used with the minimum storage capacity. Further, the re-registration process at the registration error of the image information can be efficiently performed in a short time.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an electronic filing system that is an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a process of continuously reading and registering image information on both sides of a plurality of originals by the electronic filing system of this embodiment.

FIG. 3 is an explanatory diagram showing a registration process of image information in the electronic filing system of another embodiment of the present invention.

FIG. 4 is an explanatory diagram showing an error recovery process at the time of registering image information in the electronic filing system of another embodiment of the present invention.

5 is an explanatory diagram showing an error recovery continuation process when an error occurs again by the error recovery process shown in FIG.

[Explanation of symbols]

 1: Double-sided image reading device 2: Image storage unit 3: System main unit 4: Keyboard 5: Pointing device 6: Display device 7: Printer 10: Buffer memory 11, 14: CPU 12: Magneto-optical disk 15: CPU bus memory 13 : Magneto-optical disk drive 17: Data compression / expansion processing unit 16: Buffer memory 18: CPU bus 19: Image bus

Claims (5)

[Claims] 1. A double-sided image reading device that conveys a document and reads images on the front and back sides thereof, an image storage unit that registers and holds image information read by the double-sided image reading device, and the double-sided image reading device. In an electronic filing system including a system main body that controls registration of image information read by the image storage unit, in the double-sided image reading device and the system main body,
An electronic filing system characterized in that a buffer memory having a capacity capable of storing at least one page of image information of each original is provided. 2. The electronic filing system according to claim 1, wherein the double-sided image reading device outputs image information of one side of the document to the system main body unit when the image of the document is read, and an image of the other side of the document is output. A means for storing information in an internal buffer memory is provided, and the image information of one side output from the double-sided image reading device is temporarily stored in an internal buffer memory in the system main body section and data is compressed, A unit for reading the image information of the other side stored in the buffer memory in the double-sided image reading device into the internal buffer memory, compressing the data, and registering the image information in the image storing unit. An electronic filing system characterized by being provided. 3. The electronic filing system according to claim 2, wherein the double-sided image reading device is provided with a buffer memory having a capacity capable of storing image information for three pages of a document, and image information of a front side and a back side of the document is stored. A means for reading and storing in an internal buffer memory, reading the image information from the buffer memory and outputting to the system main body section is provided, and the system main body section has a front surface of a document output from the double-sided image reading device. An electronic filing system comprising means for storing image information on the back side in an internal buffer memory in sequence, compressing the data, and then registering the information in the image storage section. 4. The electronic filing system according to claim 3, wherein when the image information stored in the internal buffer memory is output to the system main body unit, the double-sided image reading device has an empty area in the buffer memory. An electronic filing system comprising: 5. The electronic filing system according to claim 3 or 4, wherein when an error occurs when registering image information in the image storage unit in the system main body, the image information that cannot be stored is stored in the image storage unit. An electronic filing system comprising means for rereading from a buffer memory of a double-sided image reading device.