JPS634228B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to an optical reading device, and particularly to a method for checking the optical system of an optical reading device used as a voting ticket refund device. Generally, a voting ticket refund device or the like is constructed as shown in FIG. In Figure 1, voting ticket 1 is operator console 2
The ticket is inserted through the insertion slot and transported by the ticket transport control section 3. The character data on the voting ticket is first read by the reading section 4, and the read character data is stored in the reproduced image storage memory 6 via the recognition control section 5.
The character comparison circuit 7 reads the data of the area of the character to be recognized from the reproduced image storage memory 6 and compares it with the character mask of the voting ticket prepared in advance to recognize the read character.Recognition control unit - main control central processing unit via the main control unit 9 and interface unit 10.
The voting ticket is sent to the CPU, where it is determined whether or not the voting ticket is a winning ticket, and the result is again displayed on the display section 11 via the main control section 9. On the other hand, the voting ticket whose information has been read by the reading section 4 is processed by the discarded ticket processing section 12 and stored in the stacker 13. In the voting ticket payout device configured as shown in FIG. 1, the optical system is formed as shown in FIG. 2. In FIG. 2, a voting ticket inserted through an insertion slot 20 is sent by a conveying motor 21 via a photo 22 to a reading section consisting of a photo line sensor 23, a lens 24, and a lamp 25. When the voting ticket passes the photo 22, reading by the photo line sensor 23 is started. In the case of such an optical system, if the adjustment is out of order, the recognition rate will decrease as follows. (a) Reading position (position of photo 22), sensor 2
If the mounting positions in the X and Y directions of 3 are not accurate, the read characters will protrude from the predetermined character area and cannot be recognized. (b) If there is a skew when installing the sensor, the read characters will be skewed and cannot be recognized because the read characters and the character mask are compared one-to-one. (c) If the magnification and conveyance speed are not accurate, the read characters will be of different sizes and cannot be recognized because the read characters and the character mask are compared on a one-to-one basis. Conventionally, the adjustment of the optical system has been confirmed by reading the voting ticket and observing the output waveform of the photo sensor with a synchronizer, or displaying the read data as an image on the synchronizer screen. However, this method requires a special tester to display the read data as an image on the synchronized screen, and it is not possible to accurately judge the adjustment results because the test is performed visually. SUMMARY OF THE INVENTION An object of the present invention is to provide a method for checking the optical system of an optical information reading device, which can quickly and accurately check the adjustment without requiring a special tester. According to the present invention, in an optical information reading device that optically reads information recorded on a paper sheet inserted through an insertion slot, a mark is written to indicate the center of a line and column area of information recorded on the paper sheet. An optical information reading device characterized in that an optical system is checked by reading a test chart, recognizing the position of the mark written on the test chart in a test mode, and printing the result on a receipt. A method for checking the optical system is proposed. Examples of the method according to the present invention will be described in detail below. In the present invention, to check the adjustment of the optical system, instead of reading the voting ticket, the test chart is read and the mark on the test chart is recognized in the test mode. A test chart of the sheet of paper with information printed on it is shown in Figure 4. In Fig. 4, 31 indicates a mark indicating the center of the character area of 1 to 9 digits, and 32 indicates a mark of 1 to 5 characters.
Shows a mark indicating the center of the character area of the line. FIG. 5 shows an image obtained by reading the test chart in FIG. 4 with an optical system. In FIG. , 35 indicates the reading center of the image in the first digit of the third row. Next, the recognition processing in the test mode is shown in the following table.

【table】

[Table] FIG. 6 shows an example in which the deviation of the read image shown in FIG. 5 is printed on a receipt based on the above-mentioned table. 7th
The figure shows a block diagram of a device for calculating printing data for the receipt shown in FIG. In FIG. 7, the reading section 4 reads the test chart and the read image is stored in the reproduced image storage memory 6. The stored images are stored in a horizontal projection register 42a and a vertical projection register 42b by a command from a centering circuit 43 via a horizontal projection circuit 41a and a vertical projection circuit 41b, respectively. Next, registers 42a and 42b
The contents of are input to the centering circuit 43, where the centers of the read image C _31x , C _31y ; C _11x , C _11y , C _51x , C _51y ; C _19x , C _19y , are determined. Here, C _31x is the 1st in the 3rd row.
The center of the image in the x direction of the digit, C _31y is the third row,
Center of the image in the y direction of the first digit, C _11x ,
The same applies to C _11y ,... On the other hand, the recognition control unit 5 stores the center positions AC _31x and AC 31y of the area in the x and y directions in the first digit of the third row, and these values are the center values C 31x and AC _31y obtained by the centering circuit 43, _respectively . Subtraction circuit 4 with C _31y ,...
4, and the subtraction circuit 44 uses the following algorithm to obtain the values N _RX , N _RY , N _SX ,
N _SY , N _D and N _SP can be determined. N _RX = C _31x −AC _31x N _RY = AC _31y −C _31y N _SX = C _51x −C _11x N _SY = C _11y −C _19y N _D = C _51y −C _11y N _SP = C _19x −C _11x 7th Horizontal/vertical projection circuit 41 in the circuit shown in the figure
a, 41b, horizontal and vertical projection registers 42a, 42
b. The operations of the centering circuit 43 and the subtraction circuit 44 can be performed by only partially changing the recognition program, so it is possible to quickly and accurately check the adjustment of the optical system without using a special tester. Therefore, the present invention can be applied to a voting ticket refund device, etc., and its effects are extremely large.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an example of a voting ticket processing device as an example of an optical information reading device, FIG. 2 is a diagram showing the configuration of an optical system in the device of FIG. 1, and FIG. An example of a voting ticket used in the device,
FIG. 4 is a test chart used in the method according to the present invention, FIG. 5 is a read image of the test chart in FIG. 4, FIG. 6 is an example of printing a receipt in test mode, and FIG. 7 is a method according to the present invention. 1 is an example of an apparatus for carrying out the following. In the figure, 30 is a test chart, 31 is 1
~A mark indicating the center of the 9-digit character area,
32 is a mark indicating the center of the 1st to 5th line character area, 41a and 41b are horizontal and vertical projection circuits, 4
2a and 42b are horizontal and vertical projection registers, 43 is a centering circuit, and 44 is a subtraction circuit.

Claims (1)

[Claims] 1. In an optical information reading device that optically reads information recorded on a paper sheet inserted through an insertion slot,
By reading a test chart on which a mark indicating the center of the row and digit area of the information recorded on the sheet of paper is written, recognizing the position of the mark written on the test chart, and displaying the result. A method for checking an optical system of an optical information reading device, the method comprising checking the optical system.