JPH06259596A - Image reader - Google Patents

Abstract

PURPOSE:To prevent the jump of data from occurring even when overlapped running occurs. CONSTITUTION:This reader is provided with a page turning mechanism 2 which turns the page of a bound book 1, a scanner part 3 which reads the image data of the page turned by the page turning mechanism 2, a first storage means 5 which stores the data read by the scanner part 3, a character recognizing means which recognizes the number of pages by reading a page number from a prescribed part from among the data stored in the first storage means 5, a second storage means 11 which stores the number of pages recognized by the character recognizing means, a decision means which decides the number of pages when it is not continuous number as the overlapped running. and a third storage means 12 which stores a decision result.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image reading apparatus for reading the data of each page by turning the pages of a bound book.

[0002]

2. Description of the Related Art A block diagram of a conventional image reading apparatus having a page turning mechanism is shown in FIG. Reference numeral 1 is a bound book, 2 is a page-turning mechanism, 3 is a line image sensor 4 for reading the image data by sweeping the contents of the book 1, and the data read by the line image sensor 4 is stored in a first storage means 5. The scanner unit 5 having the function of transmitting to the scanner unit 5 is a first storage unit for storing the contents obtained from the scanner unit 3. 6 is a central processing unit (hereinafter, CPU), 7 is an image processing device, and 8
Indicates a display device.

The operation of the above conventional image reading apparatus will be described below. First, the page of the book 1 is turned by the page turning mechanism 2. When the page is completely turned, the scanner unit 3 sweeps the contents of the page, transmits the data obtained from the line image sensor 4 to the first storage means 5, and stores the data in the first storage means 5.
Further, the CPU 6 sends the data in the first storage means 5 to the image processing device 7, and the image processing device 7 displays the data on the display device 8.
The data (contents described in the book) is drawn on.

As described above, the image reading apparatus having the page-turning mechanism 2 turns the bound book 1 while turning the page.
The contents can be digitized and it is very useful. However, the page turning mechanism 2 has an unavoidable error of heavy running. Overrun is an error of turning over two or more pages. Especially in the mechanism for turning over the pages of the bound book 1, various conditions (paper strain and environmental conditions (humidity, etc.)) are undefined. , It is almost impossible to develop a mechanism for page turning without heavy running.

[0005]

As described above, in the page-turning device, an overrun is an unavoidable error. However, the conventional page-turning device does not provide any measures against the overrun, and the overrun does not occur. There was a problem that data skipping occurred. Also, the user cannot know the page that caused the heavy running.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an image reading apparatus in which data skipping does not occur even if overrun occurs.

[0007]

SUMMARY OF THE INVENTION An image reading apparatus of the present invention is a page turning mechanism for turning pages of a bound book, a scanner section for reading image data of pages turned by the page turning mechanism, and this scanner section. The first storage means for storing the data read by, the character recognition means for recognizing the page number by reading the page number from a predetermined portion of the data of the storage means, and the number of pages recognized by the character recognition means. It has a second storage means for storing, a determination means for determining a double run when the number of pages is discontinuous, and a third storage means for storing the determination result.

[0008]

With the above-described structure, in the page-turning mechanism, even if an overrun occurs, the page is returned so that it can be read again and the contents of the bound book can be digitized in a complete form without skipping data.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of an image reading apparatus according to an embodiment of the present invention. In the figure, 1 is a book to be bound as a reading target, 2 is a page turning mechanism, 3 is a line image sensor 4 for sweeping the contents of the book, and is a first storage means 5 to a first storage means 5. The scanner unit 5 having a function of transmitting data is a first storage unit for storing the image data obtained by the scanner unit 3. Reference numeral 6 is a central processing unit (hereinafter referred to as CPU), 7 is an image processing device, and 8 is a display device. Further, 9 is a ROM storing a control program for performing an operation described later, 10 is a keyboard as an input means, 2a is controlled by the CPU 6 and a driving current is supplied to a driving motor (not shown) of the page turning mechanism 2. Is a driver that supplies.

FIG. 2 is a functional block diagram of the image reading apparatus in the above embodiment, where A is control means for controlling each element, 22 is a character for storing the number of pages in the range stored in the recognition range storage unit 23. The recognizing means 24 compares the number of pages Y recognized immediately before being stored in the second storage means 11 with the current number of pages Z recognized by the character recognizing means 22 to determine the number of pages Y.
And the number of pages Z are discontinuous, it is determined to be overrun, and if they are continuous, it is determined to be overrun. In the control means A, the character recognition means 22, and the determination means 24, the CPU 6 executes R.
It is realized by executing the control program in the OM 9.

The image reading apparatus of this embodiment has the above-mentioned structure, and its operation will be described below.

First, the control means A issues an operation command to the driver 2a, and the driver 2a supplies a drive current to the page turning mechanism 2. As a result, the page turning mechanism 2 turns the pages of the book 1. When the pages are completely turned, the contents of the pages are swept by the scanner unit 3, and the data obtained from the line image sensor 4 is stored in the first storage means 5.

Here, FIG. 5A is a perspective view showing a book 1 as a reading object, and FIG. 5B is a 95th view of the book 1.
9 is a diagram showing image data in the first storage means 5 when a double-page spread of page 96 and page 96 is read. Now, generally, the number of pages is attached to a fixed portion (usually, two portions per double spread) through one book 1. That is, in the data stored in the first storage means 5, the location (address) where the number of pages should be recognized can be made constant through one book 1. Therefore, the portion of the data in the first storage means 5 is extracted by the control means A, the page number itself is recognized using the character recognition means 22, and is stored in the second storage means 11.

However, since the number of pages given by the book 1 varies from place to place, every time the book to be read is exchanged, the user uses the input means 10 to set two start addresses 31, 32. Also, the horizontal length x and the vertical length y of the range to be recognized are specified, and when there is this input, the control means A causes the recognition range storage unit 23.
Input information is to be stored in. When this designation is made, the character recognition means 22 refers to the information of the recognition range storage part 23 among the data of the first storage means 5, and extracts the bitmap data from the designated addresses 31 and 32, Character recognition is performed and the resulting page number Z is returned to the control means A.

Next, the control means A causes the determination means 24 to
The recognized page number Z (95th page in FIG. 5) and the page number Y recognized immediately before it (stored in the second storage means 11, 94th page in FIG. 5) are passed. Then, the determination means 24
The difference (absolute value (Z−Y)) between these page number Z and page number Y is obtained. If this difference is 1, it is interpreted that the page turning is normal and there is no double running. On the other hand, if it is 2 or more, it is interpreted as an overrun and an error occurs (see FIG. 6).
The number of pages Y recognized immediately before by the control means A (9th page in FIG. 6).
(4 pages) and the control means A stores this page number Y in the third storage means 12. Then, when the series of processing for one page is completed, the control means A updates the number of pages in the second storage means 11 to the currently recognized number of pages Z.

Further, as shown in FIG. 1, the image reading apparatus of this embodiment stores the contents stored in the third storage means 12,
It has a means to display to the user. That is, bound book 1
When the reading operation of the contents of is completed regardless of whether there is heavy running,
The control means A sends the contents written in the third storage means 12 to the image processing device 7, and the image processing device 7 displays the contents on the display device 8 in a form that the user can recognize. By checking this content, the user can determine whether a double running error has occurred.

FIG. 3 is a block diagram of an image reading apparatus according to another embodiment of the present invention, and FIG. 4 is a functional block diagram thereof. In this embodiment, up to the pages stored in the third storage means 12, the auxiliary page turning mechanism 21 driven by the driver 21a is used to turn over the pages. The auxiliary page-turning mechanism 21 performs the page-turning operation in the direction opposite to the page-turning direction of the page-turning mechanism 2 by the number specified by the control means A.

The case where the page-turning mechanism 2 turns pages in ascending order will be described below. When it is determined by the determination means 24 that the running is overrun, the control means A reads the page Y (page 94 in FIG. 6) immediately before the overrun from the third storage means 12, and uses the auxiliary page turning mechanism 21. Page Y (94th in FIG. 6)
Back to page). In FIG. 6, Z = 99 and Y = 94. Here, in the turning operation by the page turning mechanism 2,
Pages 95 to 98 are skipped due to heavy running, and scanning by the line image sensor 4 is not performed during this period.

Therefore, the auxiliary page-turning mechanism 21 forcibly turns the page in the opposite direction to the page-turning direction of the page-turning mechanism 2 X (= (Z-Y + 1) / 2)) times. In FIG. 6, X =
3, the auxiliary page turning mechanism 21 turns the pages in descending order. Then, when the reverse turning operation of the auxiliary page turning mechanism 21 is completed, the image data read by the line image sensor 4 is performed on the page skipped by the heavy running while operating the page turning mechanism 2. As a result, it is possible to reduce the jump of data.

Even in the reverse turning operation of the auxiliary page turning mechanism 21, heavy running is inevitable, and there is a possibility that more than X sheets will be turned over, but that is not a problem. Because
If it is found by character recognition that the page has already been read (before page 93 in FIG. 6), the control means A ignores the data of the page that has been read and does not store this data in the storage element 51. Is.

[0022]

Since the image reading apparatus of the present invention is configured as described above, even if an overrun occurs, by returning the page and reading it again, as data of the contents of complete bookbinding without human intervention,
It can be captured as digitized data and data skipping can be avoided.

[Brief description of drawings]

FIG. 1 is a block diagram of an image reading apparatus according to an embodiment of the present invention.

FIG. 2 is a functional block diagram of an image reading apparatus according to an embodiment of the present invention.

FIG. 3 is a block diagram of an image reading apparatus according to another embodiment of the present invention.

FIG. 4 is a functional block diagram of an image reading apparatus according to another embodiment of the present invention.

FIG. 5A is a perspective view of a book as a reading target. FIG. 5B is a diagram showing an example of read image data of a book according to an embodiment of the present invention.

FIG. 6 is a diagram showing a state in which an overrun occurs for a book according to the present invention.

FIG. 7 is a block diagram of a conventional image reading device.

[Explanation of symbols]

 1 book 2 page turning mechanism 3 scanner section 5 first storage means 11 second storage means 12 third storage means 22 character recognition means 24 determination means

Claims (3)

[Claims] 1. A page turning mechanism for turning pages of a bound book, a scanner section for reading image data of pages turned by the page turning mechanism, and a first storage means for storing data read by the scanner section. A character recognition means for recognizing the number of pages by reading a page number from a predetermined portion of the data of the memory means; a second memory means for storing the number of pages recognized by the character recognition means; The image reading device is characterized in that it has a judging means for judging that the vehicle is overrun when the above is discontinuous and a third storing means for storing the result of the judgment. 2. The image reading apparatus according to claim 1, further comprising means for notifying a user of a page that has run over by referring to the third storage means. 3. With reference to the third storage means, when the page turning mechanism is turning the pages in ascending order, the page is overrun or less, and when the page is turning in descending order, the page is overrun, or the reverse. The image reading apparatus according to claim 1, further comprising an auxiliary page-turning mechanism for turning pages in a direction, and the page-turning mechanism is operated after the operation of the auxiliary page-turning mechanism.