JPS63204383A - Reader - Google Patents

Abstract

PURPOSE:To prevent the picture of an original from being fetched with a dislocation in rotation of a large angle to produce an unreading or an erroneous reading generated by providing a first and a second original detecting sensors with a prescribed distance spaced therebetween in the vicinity of an original abutting part. CONSTITUTION:The original detecting sensors 20, 21 are respectively disposed in the vicinity of the original abutting part 14 and the prescribed distance is provided between both the sensors 20, 21. When the dislocation in the rotation of the original 2 is smaller than the angle theta2 of the dislocation in the rotation by which the picture of a camera 11 can be recognized, the original 2 is detected by both the sensors 20, 21, a reading start signal is outputted by an AND circuit 22, the picture is fetched by the camera 11 and a character is recognized by a reading part 10. When the dislocation in the rotation of the original 2 is large, either one of the sensors 20, 21 cannot detect the original 2, nor outputted the reading start signal. Thereby, the unreading and the erroneous reading are not generated due to the dislocation in the rotation of the original but the reading ratio of the original is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a reading device that reads information written on a manuscript.

(Prior Art) FIG. 4 shows a conventional reading device used in newspaper companies and the like.

This reading device 1 is a device that, when a manuscript containing an article or the like is set on a kanji printer or the like, reads a search number written on the manuscript corresponding to the article, and sends this number to a host computer. .

Reference numeral 2 denotes a document set in the reading device 1, and the document 2 has an article 3 and a search number 4 corresponding to the article 3 written thereon (FIG. 5).

This document 2 is inserted between the table 5 and the guide plate 6 of the apparatus 1, and the search number 4 is positioned in the reading window 7 provided on the guide plate 6, and then set in the apparatus 1. A document 2 set in the apparatus 1 is detected by a photosensor 9 provided in the apparatus main body 8. Then, a reading start signal is output from the photosensor 9 to the reading section (character recognition unit) 10, the search number 4 is read by the camera 11, the image from the camera 11 is taken into the reading section 10, and the character is recognized. The results are sent to the host computer 12 (Figure 6). Reference numeral 13 denotes a light that illuminates the reading window 7.

By the way, in the device 1 described above, an abutting portion 14 is provided between the table 5 and the guide plate 6 (FIG. 7), and when the original 2 is inserted between the table 5 and the guide plate 6, the original 2 is When the end surface 15 abuts against the abutting surface 16 of the abutting portion 14, the original document 2 is set at a predetermined position in the mounting B1, and the sensor 9 detects the set document 2. In addition, the screen 17 captured by the camera 11 is expressed in X-Y coordinates, and the search number 4 is expressed in χ-y coordinates (the character string of search number 4 is expressed in y
If it is expressed as @dosuru), the direction of the X axis of the screen 17 is the same as that of the abutment surface 16, and if the end surface 15 of the document 2 is correctly abutted against the abutment surface 16, the Y axis of the screen 17 is
The configuration is such that the axes match the y-axes and search number 4 can be correctly recognized. However, the area of the sensor 9 that detects the document 2 is not a point but a certain range, and the detection position also varies, so the sensor 9 detects the document 2 as shown in FIG.
Substantially, the document 2 is detected at a position a certain distance S away from the abutting surface 16. Therefore, only the corners of the original 2 abut against the abutment surface 16, and the original 2
In some cases, the sensor 9 detects the document 2 with the end surface 15 of the document 2 tilted by a certain angle θ1 from the abutting surface 16, and a reading start signal is output. In such a case, the eighth
As shown in the figure, the χ-y coordinate of search number 4 has rotated by an angle θ1 with respect to the X-Y coordinate of the screen 17, and if the angle θ1 is large, the It may become impossible to detect the character string in the image with search number 4 or cut out each character block (unreadable), or "1 (
1) Characters such as ゛ and "/ (slash)", which have different meanings depending on the angle, were misread.

Although the parallel deviation of the document 2 with respect to the camera screen 17 does not significantly affect the reading rate of characters, this type of rotational deviation leads to a decrease in the reading rate, as described above. This type of device 1 is configured to start reading when the sensor 9 detects the original 2, and it depends on whether the operator inserts the original 2 straight or not in order to prevent the reading rate from decreasing due to rotational deviation. It turns out. However, this cannot prevent a decrease in the reading rate due to the rotational shift when a high reading rate is required.

On the other hand, there is a method of correcting the rotational deviation 0 using software, but this method has a problem in that the processing time increases dramatically because the rotation correction is performed on a large amount of information called an image.

(Problems to be Solved by the Invention) As described above, in conventional reading devices, images may be captured and recognized with the document rotationally misaligned with respect to the camera screen. I couldn't get the rate.

The present invention has been made in view of these conventional drawbacks, and it is an object of the present invention to provide a reading device in which an image of a document is not captured in a state where an angular rotational deviation large enough to cause unreading or misreading occurs. purpose.

[Structure of the Invention] (Means for Solving the Problems) In the reading device of the present invention, the first and second sensors are placed at a predetermined distance near the abutting portion against which the end surface of the document is abutted. When the first and second sensors detect the document, an AND circuit outputs a reading start signal.

(Function) In this reading device, when the rotational positional deviation of the original is large, either the first or second sensor will not detect the original, and the reading start signal will not be output. Therefore, the rotational positional deviation of the document can be made large enough to prevent unreading or misreading.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to FIGS. 1 to 3.

In the figure, 1A is a reading Ml, and 2 is a document.

As in the conventional example, the original 2 is inserted between the table 5 and the guide plate 6 of the apparatus 1A, the search number 4 is positioned in the reading window 7 provided in the guide plate 6, and the document 2 is set in the apparatus @1A.

20 and 21 are photosensors that detect the original 2 set in the apparatus 1A. As shown in FIG. 3, the sensor (first sensor) 20 and sensor (second sensor) 21 are
They are respectively arranged near the abutting portion 14 . Further, a predetermined distance is provided between both sensors 20 and 21. Then, as shown in FIG. 1, both sensors 20 and 21
If detected, the AND circuit 22 outputs a reading start signal to the reading section 10.

Next, the operation of the reading device 1A will be explained.

As in manuscript 2 shown by the dashed line in Fig. 3, the angle θ is large.
If the original 2 is set with a rotational deviation of 1, either the sensor 20 or the sensor 21 cannot detect the original 2.

Therefore, since the reading start signal is not output from the AND circuit 22, the reading of the original 2 will not be started in a state where a rotational deviation is so large that the image of the camera 11 cannot be recognized and processed.

Further, if the rotational deviation of the original 2 is smaller than the angle θ2 of the rotational deviation at which the image of the camera 11 can be recognized and processed, the third
As shown in the document 2 shown by the solid line in the figure, the document 2 has both sensors 20.
21. Therefore, the AND circuit 22 outputs a reading start signal, and the camera 11 captures an image and the reading section 10 performs character recognition processing.

At this time, since the rotational deviation of the original 2 is small, misreading or misreading will not occur due to the rotational deviation of the original 2.

[Effects of the Invention] As explained above, in the reading device of the present invention, when a document is set, the reading start signal is not output when the rotational position shift of the document is large, and only when there is no or small rotational shift. A reading start signal is output. Therefore, unreading or misreading due to rotational positional deviation of the original does not occur, and the reading rate of the original is improved.

[Brief explanation of the drawing]

1 to 3 are diagrams for explaining the present invention in detail,
FIG. 1 is a block diagram for explaining reading of a document, FIG. 2 is a perspective view of the reading device, and FIG. 3 is a diagram for explaining rotational positional deviation of the document. 4 to 8 are diagrams explaining a conventional example, in which FIG. 4 is a perspective view of a reading device, FIG. 5 is a perspective view of a document, FIG. 6 is a block diagram explaining reading of a document, and FIG. This figure is a diagram for explaining the rotational positional deviation of the original, and FIG. 8 is a diagram for explaining the relationship between the rotational positional deviation of the original and the screen. 1A...Reading device 2...Document 14...Abutment portion 15...End surface (of the document) 16...
Abutment surface 20...first sensor 21...
Second sensor 22...And circuit agent Patent attorney Nori Chika Ken Yudo Sanno - Figure 1 Figure 2 Figure 3 Figure 4 Figure 5! iin Figure 6

Claims (1)

[Claims] In a reading device that uses a sensor to detect a document set with an end surface abutted against an abutment portion and outputs a reading start signal to start reading the document, a first sensor provided near the abutment portion; and a second sensor provided near the abutting portion at a predetermined distance from the first sensor, and output a reading start signal when the first and second sensors detect the document. A reading device characterized by comprising an AND circuit that outputs.