JP7079118B2 - Code readers and programs - Google Patents

Description

Embodiments of the present invention relate to code readers and programs.

Conventionally, there is a code reading device that scans a bar code attached to a product with a laser scanner or the like, reads the code information contained in the bar code, and outputs the code information to a POS (Point Of Sales) terminal or the like. In code reading, there are cases where the barcode is misread due to the print quality and dirt of the barcode, wrinkles on the package, etc. If the misread code outputs incorrect product information, the cashier will rescan the barcode again. And the code needs to be read again. As a conventional technique relating to code misreading, for example, a technique of associating a misread code with an original code and outputting the original code when the code corresponding to the misread code is read is disclosed.

By the way, in recent years, an image scanner that extracts an imaging region of a code symbol from an captured image, decodes the code symbol from the image, and reads code information such as a product code or a discount code has become widespread. Such a scanner (reading device) captures an image captured according to the frame rate, that is, a frame image, extracts an image area of a code symbol such as a barcode or a two-dimensional code from the captured frame image, and extracts the code symbol. Is decoded. Even in such an image scanner, when a misread code is read, the cashier needs to retry reading the code by holding the product over the image pickup unit or changing the way of holding the product, and the misreading is performed. Is still desired to be reduced. Against this background, it has been desired to develop a technique that can reduce the trouble of re-reading the code.

An object to be solved by the present invention is to provide a code reading device and a program that can easily save the trouble of code rereading.

The code reading device of the embodiment includes an image capturing means, a code reading means, a first output means, a rereading means, a counting means, a second output means, and a number of times output means. The image capturing means captures the captured image captured by the imaging means. The code reading means reads the code related to the product from the captured image. The first output means must store the code read by the code reading means as the misread code based on the misread information storage means that stores the code misread in the past in reading the code related to the product as the misread code. For example, the code read by the code reading means is output as a registration target. If the code read by the code reading means is stored as the misreading code in the misreading information storage means, the re-reading means captures a new captured image by the image capturing means and incorporates the new captured image into the new captured image. On the other hand, the code is read again. The counting means counts the number of times the code is read from different captured images. When the rereading means repeatedly reads the same code as the misread code read in the previous reading even if the rereading means repeatedly reads the code a predetermined number of times, the second output means repeatedly reads the code. Output as a registration target. When the second output means outputs the same code as the misread code, the number output means also outputs the read count .

FIG. 1 is an external perspective view of the POS system according to the embodiment. FIG. 2 is a block diagram showing a hardware configuration of a POS terminal and a scanner included in a POS system. FIG. 3 is a block diagram showing a functional configuration of a program executed by a POS terminal and a functional configuration of a program of the present embodiment executed by a scanner. FIG. 4 is a flowchart showing a procedure example of the misread information registration process executed by the POS terminal. FIG. 5 is a flowchart showing an example of a reading process executed by the scanner.

FIG. 1 is an external perspective view of the POS system 100. As shown in FIG. 1, the POS system 100 includes a scanner 101 that reads information about a product, and a POS terminal 10 that registers and setstles the product for each transaction. Hereinafter, an example in which the scanner 101 is applied as the code reading device according to the present embodiment will be described. In the following, similar configurations shown in a plurality of drawings may be designated with the same reference numerals, and duplicate description thereof may be omitted.

The POS terminal 10 is mounted and used on the upper surface of the drawer 21 on the checkout table 41. The drawer 21 is controlled by the POS terminal 10 for opening operation. A keyboard 22 that is pressed by an operator (clerk) is arranged on the upper surface of the POS terminal 10. A store clerk display 23 that displays information toward the operator is provided behind the keyboard 22 when viewed from the operator who operates the keyboard 22. A touch panel 26 is laminated on the display surface of the clerk display 23. Further, in the POS terminal 10, a printer 66 for printing receipts and journals is provided behind the keyboard 22. A customer display 24 is held on the upper part of the housing of the printer 66 by a rotatable shaft. The customer display 24 can change the orientation of the display surface by rotating the holding shaft with respect to the housing.

A horizontally long table-shaped counter table 151 is arranged and used so as to form an L-shape with the check-out table 41. The upper surface of the counter stand 151 is a load receiving surface 152. The consignment surface 152 has a space for placing a shopping cart 153a for the customer to put the product to be purchased and a shopping cart 153b for putting the product after the sales registration.

A thin rectangular housing 102 of the scanner 101 is provided vertically on the load receiving surface 152. An operation display unit 104 is attached to the upper part of the housing 102. The operation display unit 104 includes a store clerk display 106 on which the touch panel 105 is laminated on the surface. A keyboard 107 is provided to the right of the clerk display 106. A card reading groove 108 of a card reader is provided on the right side of the keyboard 107. A customer display 109 for providing information to the customer is installed on the back side of the operation display unit 104 when viewed from the operator.

Further, a reading window 103 for the image pickup unit 12 (see FIG. 2) is provided below the operation display unit 104 and in front of the housing 102. The image pickup unit 12 captures an image in the image pickup region in front of the reading window 103 through the reading window 103.

The shopping cart 153a brought in by the customer contains the products to be purchased. The operator of the scanner 101 picks up the products one by one from the shopping cart 153a, holds them in the reading window 103, and captures an image (frame image) of the products by the image pickup unit 12. The scanner 101 identifies a product by applying general object recognition (object recognition) to the image area of the product included in the captured image. Alternatively, the scanner 101 decodes a code symbol such as a barcode or a two-dimensional code included in the captured image, and reads information about the product such as the product code encoded in the code symbol.

When the scanner 101 reads the product code, the product information corresponding to the product code is read from the product master file 641 (see FIG. 2), displayed on the clerk display 106, and output to the POS terminal 10 as information to be registered. do. After confirming that the information is displayed on the clerk display 106, the operator moves the read (after information registration) product from the shopping cart 153a to the shopping cart 153b.

Next, the hardware configuration of the POS system 100 will be described.

FIG. 2 is a block diagram showing a hardware configuration of a POS terminal 10 and a scanner 101 included in the POS system 100. First, the configuration on the POS terminal 10 side will be described.

The POS terminal 10 includes a CPU (Central Processing Unit) 61, a ROM (Read Only Memory) 62, and a RAM (Random Access Memory) 63 as a control unit 60 of a microcomputer configuration. Further, the drawer 21, the keyboard 22, the clerk display 23, the touch panel 26, and the customer display 24 are connected to the CPU 61 via various buses and interfaces. The CPU 61 controls each of these parts.

Further, an HDD (Hard Disk Drive) 64, a communication I / F (Interface) 25, a connection I / F65, and a printer 66 are connected to the CPU 61. The control unit 60 controls data communication with the store computer SC via the communication I / F 25. The connection I / F 65 is connected to the connection I / F 175 and the connection I / F 176 of the scanner 101. The CPU 61 of the POS terminal 10 and the control unit 160 of the scanner 101 communicate with each other via the connection I / F65 and the connection I / F175.

The HDD 64 stores the product master file 641 and the misread information file 642 in addition to the program for performing the misread information registration process (see FIG. 4). The control unit 60 downloads the product master file 641 from the store computer SC at a predetermined timing such as before the store opens, and updates the product master file 641 every business day.

The product master file 641 stores information such as the product name, unit price, and classification of the product in association with the product code for identifying the product. Further, the product master file 641 stores a captured image (reference image) of the product as reference data used for object recognition. Even if the product master file 641 stores the feature amount extracted from the reference image, that is, the data indicating the color information, the surface shape, the texture of the surface, etc. of the reference image as the reference data for object recognition. good.

The misread information file 642 is a data file in which information misread in the past by a reading process of reading information about a product from a captured image by a scanner 101 is stored as misread information. As an example of misread information, a misread code is registered as a code misread in the past in the reading process of decoding the code symbol in which the product code is encoded and reading the product code.

The administrator of the POS system 100 collects the actual data of the misreading that occurred during the actual business and the misreading that occurred in the reading test as misreading information, and performs the registration process of the misreading information described later together with FIG. 4, and collects the data. The misread information is registered in the misread information file 642.

As the misread information to be registered in the misread information file 642, only the misread code (misread code) may be registered. Alternatively, the misread information file 642 may be registered as misread information in association with the misread code and the correct answer code, which is the original code that should be read if it is not misread. In the misread information file 642, the correct answer code may not be registered in all the misread codes, and it is sufficient that the misread code and the correct answer code are associated with at least a part of the misread information.

Next, the configuration on the scanner 101 side will be described.

The scanner 101 includes a control unit 160 having a microcomputer configuration in which a CPU 161, a ROM 162, and a RAM 163 are connected by a bus. The ROM 162 stores various programs executed by the CPU 161. The lighting unit 11, the image pickup unit 12, the audio output unit 165, the connection I / F 175, the connection I / F 176, and the like are connected to the CPU 161 via various buses and I / Fs. The control unit 160 connects to the POS terminal 10 via the connection I / F 175, and mutually performs data communication with the control unit 60 of the POS terminal 10.

The voice output unit 165 is a voice circuit, a speaker, or the like for generating a preset warning sound or the like. For example, the lighting unit 11 is configured by arranging a plurality of LEDs (Light Emitting Diodes) in a line, and emits a pulse in response to a light emission control signal to illuminate the image pickup area of the image pickup unit 12. The configuration of the illumination unit 11 is not particularly limited, and may be configured by a light emitting element other than the LED.

The image pickup unit 12 is an image pickup device including an image sensor (also referred to as an image pickup element) such as a CCD (Charge Coupled Device) or CMOS (Complementary Metal-Oxide Semiconductor) and an optical element such as a lens. The image pickup unit 12 sequentially reads an image taken at a frame rate (the number of frames read per second) based on the image pickup control signal, that is, a frame image into the RAM 163.

Further, the operation display unit 104 for the clerk and the customer display 109 (both also see FIG. 1) are connected to the CPU 161 via the connection I / F175 and the connection I / F176. The operation display unit 104 for the clerk and the customer display 109 are connected to the CPU 61 of the POS terminal 10 via the connection I / F 176 and the connection I / F 65 of the POS terminal 10. The clerk operation display unit 104 includes a keyboard 107, a clerk display 106, and a touch panel 105 (both also see FIG. 1) arranged on the clerk display 106.

The clerk display 106 is composed of, for example, a liquid crystal display, and has a structure in which the touch panel 105 is laminated on the liquid crystal surface. As the customer display 109, a liquid crystal display, a line indicator capable of displaying a plurality of lines, or the like can be used. The control unit 160 of the scanner 101 receives operation inputs on the keyboard 107 and the touch panel 105. Further, the control unit 160 controls the display operation of the store clerk display 106 and the customer display 109. The control unit 60 of the POS terminal 10 may accept the operation input on the keyboard 107 and the touch panel 105, and directly transmit and output the display data to the clerk display 106 and the customer display 109.

Next, the functional configuration of the program executed by the control unit 60 of the POS terminal 10 and the program of the present embodiment executed by the control unit 160 of the scanner 101 will be described.

FIG. 3 is a block diagram showing a functional configuration of a program executed by the POS terminal 10 and a functional configuration of a program of the present embodiment executed by the scanner 101. In the control unit 60 of the POS terminal 10, the CPU (processor) 61 (see FIG. 2) reads the program from the HDD 64 and loads it on the main storage device. As a result, as shown in FIG. 3, the control unit 60 generates the misread information registration unit 601 and the sales registration unit 602 on the main storage device.

Further, in the control unit 160 of the scanner 101, the CPU (processor) 161 (see FIG. 2) reads the program according to the present embodiment from the ROM 162 and loads it on the main storage device. As a result, as shown in FIG. 3, the control unit 160 generates the misread information reading unit 1601, the image capturing unit 1602, the code reading unit 1603, and the code output unit 1604 on the main storage device.

First, the functions of each unit of the control unit 60 of the POS terminal 10 will be described.

The misread information registration unit 601 registers misread information in the misread information file 642 based on an input operation from the keyboard 22, the touch panel 26 (both see FIGS. 1 and 2) and the like. The misread information registration unit 601 may receive misread information from the store computer SC via the communication I / F 25 and register the received misread information in the misread information file 642. An example of the procedure for misreading information registration processing will be described later together with FIG.

The sales registration unit 602 reads the product information, the product price, etc. of the product to be sold from the product master file 641 based on the information received from the scanner 101, and registers the product as sales data. That is, when the sales registration unit 602 receives the product code from the scanner 101, the sales registration unit 602 reads the product information such as the product name and the product price corresponding to the product code from the product master file 641 of the HDD 64 and registers the product as sales data. ..

Further, when the scanner 101 finishes scanning all the products for one transaction, the sales registration unit 602 calculates the total amount for one transaction, accepts the input of the deposit from the customer, and calculates the change amount. A tightening process is performed in which the change amount is displayed on the clerk display 23 and the customer display 24.

Next, the functions of each unit of the control unit 160 of the scanner 101 will be described.

The misread information reading unit 1601 reads the misread information file 642 from the POS terminal 10 when the scanner 101 is started, and writes it on the RAM 163.

The image capture unit 1602 captures the captured image captured by the image pickup unit 12 (see FIG. 2).

The code reading unit 1603 reads the code related to the product from the captured image. As an example of a code related to a product, read the product code that identifies the product.

Further, if the code read from the captured image is stored as a misread code in the misread information file 642, the code reading unit 1603 (rereading means) captures a new captured image of another frame by the image capturing unit 1602. The code is re-read for the new captured image. That is, if the product code read by the code reading unit 1603 is stored as a misreading code in the misreading information file 642, the code reading unit 1603 rereads the product code for a new captured image.

Further, the code reading unit 1603 (counting means) counts the number of readings, which is the number of times the code is read from different captured images. That is, the code reading unit 1603 counts the number of attempts to read the code without outputting the code.

If the code read by the code reading unit 1603 is not stored as an erroneous reading code in the misread information file 642, the code output unit 1604 (first output means) uses the code read by the code reading unit 1603 as information to be sold and registered. Output to the POS terminal 10. That is, if the product code read by the code reading unit 1603 is not stored as a misread code in the misread information file 642, the code output unit 1604 outputs the product code to the POS terminal 10 as a registration target.

Further, the code output unit 1604 (second output means) outputs the same code as the code determined to be stored as a misread code in the previous reading even if the code reading unit 1603 repeats reading the code a predetermined number of times. In the case of repeated reading, the repeatedly read code is output to the POS terminal 10 as information to be registered for sale. That is, even if the code reading unit 1603 repeatedly reads the product code a predetermined number of times, the code output unit 1604 repeatedly reads the same product code as the misread code read in the previous reading. The code is output to the POS terminal 10 as a registration target.

The code output unit 1604 (number output means) may output the same code as the misread code to the POS terminal 10 together with the number of readings counted by the code reading unit 1603.

Further, in the code output unit 1604 (third output means), the code read by the code reading unit 1603 is misread as correct code corresponding to the same misread code as the code read in the previous reading. If it is stored in the file 642, the correct answer code is output to the POS terminal 10 as information to be registered for sale.

Next, an operation example of the POS terminal 10 and an operation example of the scanner 101 will be described.

FIG. 4 is a flowchart showing a procedure example of the misread information registration process executed by the POS terminal 10. When the GUI for registering misread information is activated in the POS terminal 10, the misread information registration unit 601 accepts the input of the misread code via the keyboard 22 and the touch panel 26 (step S1). If there is a correct answer code (step S2: Yes), the misread information registration unit 601 further accepts the input of the correct answer code (step S3). Then, the misread information registration unit 601 pairs the misread code and the correct answer code and registers them in the misread information file 642 as misread information (step S4). On the other hand, if there is no correct answer code (step S2: No), the misread information registration unit 601 registers only the misread code as misread information in the misread information file 642 (step S6), and proceeds to step S5. When the operation of the end button such as GUI is accepted and the end of the registration process is instructed (step S5: Yes), the process is ended and the process returns to the initial screen or the registration screen. Step S5: If No, the process returns to step S1.

FIG. 5 is a flowchart showing a procedure example of the reading process executed by the scanner 101. Here, an example in which a barcode is applied as a code symbol will be described.

In the scanner 101, the misread information reading unit 1601 reads the misread information file 642 from the HDD 64 of the POS terminal 10 and writes it to the RAM 163 (step S21).

Next, the image capture unit 1602 outputs an image pickup on signal to the image pickup unit 12 to start the image pickup operation, and starts a process of capturing the image capture image for each frame onto the RAM 163 (step S22). The code reading unit 1603 binarizes the captured image of one frame captured on the RAM 163 and determines whether or not a data area corresponding to the barcode exists in the binarized data (step S23). While the barcode is not detected (step S23: No), the process returns to step S23 and waits for the barcode to be detected.

When a data area corresponding to a barcode is detected in the captured image (step S23: Yes), the code reading unit 1603 decodes the detected barcode and reads the code data (step S24). The code data includes a check digit as well as a product code that identifies the product. The code reading unit 1603 determines whether or not the decoding is successful based on the check digit (step S25).

If the decoding fails from the check digit (step S25: No), the process returns to step S23 and the barcode detection is continued using the new frame image. If it is determined that the decoding is successful based on the check digit (step S25: Yes), the code output unit 1604 checks whether the decoded product code is registered in the misread information file 642 as a misread code. (Step S26).

If the decoded product code is not stored in the misread information file 642 as a misread code (step S27: No), the code output unit 1604 outputs the product code to the POS terminal 10 as a registration target (step S28), and steps. Move to S29.

On the other hand, when the decoded product code is stored in the misread information file 642 as a misread code (step S27: Yes), the code reading unit 1603 counts the number of readings n (step S30). If it is the first reading, the number of readings n is 1. The number of readings n is the number of times the code is read without outputting the code.

If the number of readings n is 2 or more (step S31: Yes), the code output unit 1604
In the misread information file 642, it is determined whether or not the correct answer code is associated with the misread code collated in step S26 (step S32). When the correct answer code is associated (step S32: Yes), the code output unit 1604 matches the product code decoded in step S24 with the correct answer code corresponding to the misread code matched in the collation in step S26. It is determined whether or not to do so (step S33). If the product code matches the correct answer code (step S33: Yes), the code output unit 1604 outputs the correct answer code to the POS terminal 10 as a registration target (step S34), and proceeds to step S29. In the case of step S31: No, step S32: No and step S33: No, the process proceeds to step S35.

In step S35, the code output unit 1604 determines whether the number of readings n has reached a predetermined threshold value N. When the number of readings n becomes the threshold value N and the code is repeatedly read again without outputting the code N times continuously (step S35: Yes), the code output unit 1604 registers the code read N times continuously. It is output to the POS terminal 10 as a target (step S36), and the process proceeds to step S29. When the number of readings n is less than the threshold value N (step S35: No), the process returns to step S23 and the subsequent processing is continued.

When the scanning screen displayed on the clerk display 106 of the scanner 101 or the operation for declaring the end of reading is input from the keyboard 107 or the like and the scanning of one transaction is completed (step S29: Yes), the code reading unit 1603 reads. The number of times n, the read image data, and the like are cleared from the work memory on the RAM 163 (step S37), and the reading process of one transaction is completed. Step S29: If No, the process returns to step S23.

The program executed by the scanner 101 of the present embodiment is provided by being incorporated in ROM 162 (see FIG. 2) in advance. The program executed by the scanner 101 of the present embodiment is a file in an installable format or an executable format and is read by a computer such as a CD-ROM, a flexible disk (FD), a CD-R, or a DVD (Digital Versatile Disk). It may be configured to be recorded and provided on a possible recording medium.

Further, the program executed by the scanner 101 of the present embodiment may be stored on a computer connected to a network such as the Internet and provided by downloading via the network. Further, the program executed by the scanner 101 of the present embodiment may be configured to be provided or distributed via a network such as the Internet.

Further, the program executed by the POS terminal 10 is provided by being incorporated in the HDD 64 (see FIG. 2) in advance. The program executed by the POS terminal 10 is a file in an installable format or an executable format and can be read by a computer such as a CD-ROM, a flexible disk (FD), a CD-R, or a DVD (Digital Versatile Disk). It may be configured to be recorded on a medium and provided.

Further, the program executed by the POS terminal 10 may be stored on a computer connected to a network such as the Internet and provided by downloading via the network. Further, the program executed by the program executed by the POS terminal 10 may be provided or distributed via a network such as the Internet.

Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

(Application to discount code)
For example, in the above, the example in which the product code is applied as the information about the product is shown, but the discount code indicating the discount content is applied as the information about the product, and the discount code can also be collated with the misread code. good.

That is, in the misread information file 642, the code misread in the past in the process of reading the discount code may be registered as the misread code. The discount code reading process is to perform character recognition and pattern recognition on the image of the discount display, read the information indicating the discount content, and generate the discount code indicating the discount content. This is the process of reading the code. As the discount display, a label printed in advance in a predetermined format such as a discount label may be read, or handwritten characters and marks may be read by character recognition or pattern recognition.

In this case, the code reading unit 1603 of the scanner 101 performs the above-mentioned discount code reading process. If the discount code read by the code reading unit 1603 is not stored as a misreading code in the misread information file 642, the code output unit 1604 (first output means) registers the discount code as the product code to be registered. It may be output in association with. Further, if the discount code read by the code reading unit 1603 is stored as a misreading code in the misreading information file 642, the code reading unit 1603 (rereading means) can read the discount code for a new captured image. All you have to do is read it. Further, when the code output unit 1604 (second output means) repeatedly reads the same discount code as the misread code read in the previous reading even if the code reading unit 1603 repeatedly reads the discount code a predetermined number of times. The discount code that has been repeatedly read may be set as the registration target, and may be output in association with the product code that is the registration target.

Then, on the POS terminal 10 side, when the product code and the discount code are associated with each other and transmitted from the scanner 101, the sales registration unit 602 reads the product information from the product master file 641 as described above. The discount information indicated by the discount code may be applied to register the sales data to which the discount is applied. The product code and the discount code may be associated with each other on the POS terminal 10 side.

As described above, according to the above embodiment, when the code registered as the misreading code in the misreading information file 642 is read, the reading is repeated a plurality of times and then output as the registration target. That is, when the same code as the code with a record of misreading is read, the same code is read multiple times by re-reading it multiple times, and when the reading accuracy is certain, it is output as a registration target. Will be. By doing so, it is possible to provide a code reading device and a program that can easily save the trouble of code rereading.

10 POS terminal 101 Scanner 160 Control unit 642 Misread information file 1601 Misread information reading unit 1602 Image import unit 1603 Code reader 1604 Code output unit

Japanese Unexamined Patent Publication No. 6-259591

Claims (5)

Image capture means that captures the captured image captured by the image pickup means, and
A code reading means for reading a code related to a product from the captured image,
Based on the misread information storage means that stores the code misread in the past in reading the code related to the product as the misread code, if the code read by the code reading means is not stored as the misread code, the code reading means. The first output means that outputs the code read by
If the code read by the code reading means is stored as the misreading code in the misreading information storage means, a new captured image is captured by the image capturing means, and the code is rewritten for the new captured image. A re-reading means for reading and
A counting means for counting the number of times a code is read from different captured images, and
Even if the re-reading means repeatedly reads the code a predetermined number of times, if the same code as the misread code read in the previous reading is repeatedly read, the repeatedly read code is output as a registration target. Output means and
When the second output means outputs the same code as the misread code, the number of times output means for outputting the number of times of reading together, and the number of times output means.
A code reader equipped with. The misread information storage means stores at least a part of the misread codes in association with a correct answer code that should be read if it is not misread.
The code reader is
If the code read by the rereading means is stored in the misreading information storage means as the correct answer code corresponding to the same misreading code as the code read by the code reading means, the correct answer code is used. The code reading device according to claim 1, further comprising a third output means for outputting the above. The misreading information storage means stores the misreading code read as a result of the misreading regarding the misreading generated by reading the code symbol in which the product code specifying the product is encoded.
The code reading means detects an image of a code symbol from the captured image, decodes the code symbol, and reads the product code.
If the product code read by the code reading means is not stored as the misread code in the misread information storage means, the first output means outputs the product code as a registration target.
If the product code read by the code reading means is stored as the misreading code in the misreading information storage means, the rereading means rereads the product code for the new captured image.
The second output means is repeatedly read when the rereading means repeatedly reads the same product code as the misread code read in the previous reading even if the product code is repeatedly read a predetermined number of times. Output the product code as a registration target,
The code reader according to claim 1 or 2 . The misread information storage means stores the code misread in the past in the process of reading the information indicating the discount content from the image of the discount display and generating the discount code indicating the discount content as the misread code.
The code reading means detects an image of a discount display from the captured image, reads information indicating the discount content from the image, and generates a discount code indicating the discount, thereby discounting from the captured image. Read the code,
If the discount code read by the code reading means is not stored as the misread code in the misread information storage means, the first output means transfers the discount code to the product code to be registered. Output in association with each other
If the discount code read by the code reading means is stored as the misread code in the misread information storage means, the rereading means rereads the discount code for the new captured image. Do,
The second output means repeatedly reads the same discount code as the misread code read in the previous reading even if the rereading means repeatedly reads the discount code a predetermined number of times. The code reading device according to claim 3 , wherein the discount code is output in association with the product code to be registered. The computer that controls the code reader,
Image capture means that captures the captured image captured by the image pickup means, and
A code reading means for reading a code related to a product from the captured image,
Based on the misread information storage means that stores the code misread in the past in reading the code related to the product as the misread code, if the code read by the code reading means is not stored as the misread code, the code reading means. The first output means that outputs the code read by
If the code read by the code reading means is stored as the misreading code in the misreading information storage means, a new captured image is captured by the image capturing means, and the code is rewritten for the new captured image. A re-reading means for reading and
A counting means for counting the number of times a code is read from different captured images, and
Even if the re-reading means repeatedly reads the code a predetermined number of times, if the same code as the misread code read in the previous reading is repeatedly read, the repeatedly read code is output as a registration target. Output means and
When the second output means outputs the same code as the misread code, the number of times output means for outputting the number of times of reading together, and the number of times output means.
A program to make it work.

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