JP2012161986A - Optical information verifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical information verifier capable of shortening the verification time of information code displayed on a display surface of a display medium.SOLUTION: Feeding speed V at which a print label 12 to be verified is continuously fed is decelerated from verification time feeding speed Vo (or in a stopped state). Based on the picked-up image by the image pickup processing, the specified information of the information code (bar code B) displayed on a display surface 13 of the print label 12 is specified, and stored in a storage unit 24. Each display state of the information code included in the picked-up image in which the image of each display surface 13 is picked up for the print label 12 to each print label 12 to be continuously fed at the verification time feeding speed Vo is verified based on the specified information stored in the storage unit 24.

Description

  The present invention relates to an optical information verifier that verifies an information code displayed on a display surface of a display medium.

  2. Description of the Related Art Conventionally, as a technique related to an optical information verifier that verifies an information code displayed on a display surface of a display medium, a printing apparatus shown in Patent Document 1 below is known. This printing device generates bit data of all information codes to be printed in the work area, determines whether the information code is in the print area according to the number of dots of the information code, and the like. The information code determined to be replaced with black data. As a result, the information code that exceeds the print area is blacked out and printed, which facilitates visual confirmation of the print area over.

  Further, the barcode printer shown in the following Patent Document 2 is provided with a barcode verification device for verifying a printed barcode label, and the barcode width data and the like of the barcode printed by this barcode verification device is obtained. Then, it is verified whether the barcode is out of the standard based on the bar width data or the like.

JP 2003-154709 A Japanese Patent Laid-Open No. 02-225074

  By the way, in the configuration shown in Patent Document 1 or Patent Document 2 described above, when verifying the information code displayed on the display surface of the display medium, which type of information code is located at which position of the captured image obtained by capturing the display surface. Since it is unknown whether or not is displayed, the information code must be searched for all the display surfaces in order to specify the information code included in the captured image, which takes time. In particular, when verifying an unspecified number of information codes, there is a problem that the verification time becomes long.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an optical information verifier that can shorten the verification time of an information code displayed on a display surface of a display medium. It is to provide.

  In order to achieve the above object, in the optical information verifier according to claim 1, the information displayed on the display surfaces of the plurality of display media continuously sent at a predetermined speed. An optical information verifier comprising: an imaging unit that captures a code for each display medium; and a verification unit that verifies a display state of the information code included in a captured image captured by the imaging unit. Based on an image, a specifying unit that can specify at least one of a code type of an information code displayed on the display surface and a display position on the display surface as specific information, and the specification specified by the specifying unit Storage means for storing information, and control means capable of controlling the predetermined speed, wherein the control means is configured to specify the specific information based on the captured image by the specifying means. The predetermined speed at the time of specifying is decelerated or stopped from a state where the specific information is not specified, and the verification means is included in the captured image based on the specific information stored in the storage means The display state of the information code is verified.

  A second aspect of the present invention is the optical information verifier according to the first aspect, wherein the storage unit stores a plurality of the specific information, and the verification unit stores the plurality of specifics stored in the storage unit. When the verification of the display state of the information code included in the captured image based on one of the information fails, the information on which the verification fails based on the other one of the plurality of specific information The code display state is verified.

  According to a third aspect of the present invention, in the optical information verifier according to the second aspect, when the specifying unit fails to verify a display state of the information code included in the captured image based on the specific information by the verifying unit. The specific information is newly updated based on a captured image in which the verification has failed or a newly captured image in a state where the predetermined speed is decelerated or stopped by the control unit from a state where the specific information is not specified. The newly specified specification information is further stored in the storage means.

  According to a fourth aspect of the present invention, in the optical information verifier according to the second or third aspect, the storage unit prioritizes the plurality of specific information according to a priority condition relating to a preset verification. Predetermined information for determining the order is added and stored, and the verification unit includes the information code included in the captured image based on one of the plurality of specific information stored in the storage unit. When the verification of the display state fails, based on the specific information having the high priority according to the predetermined information among the plurality of specific information excluding the one specific information, The display state is verified.

  According to a fifth aspect of the present invention, in the optical information verifier according to the first aspect, the identification unit fails to verify the display state of the information code included in the captured image based on the specific information by the verification unit. The specific information based on a captured image in which the verification has failed or a newly captured image in a state where the predetermined speed is decelerated or stopped by the control unit from a state where the specific information is not specified. When the specific information is specified by the specifying means, the specific information is overwritten and stored in the storage means, and the verification means is stored with the specific information overwritten in the storage means. Then, the display state of the information code included in the captured image is verified based on the specific information.

  In the first aspect of the invention, the predetermined speed at which the display medium to be verified is continuously sent is decelerated from the state where the specific information is not specified by the control means or is stopped, and the imaging means picks up the image. Based on the captured image, the identification information of the information code displayed on the display surface of the display medium is identified by the identifying unit and stored in the storage unit. Then, for each of a plurality of display media sent continuously at a predetermined speed, each display state of the information code included in the captured image obtained by capturing each display surface for each display medium is stored in the storage unit. Based on the specified information, verification is performed by the verification means.

As described above, when the specifying unit specifies at least one of the code type of the information code displayed on the display surface and the display position with respect to the display surface as the specific information, the predetermined speed is reduced. Since it is in a stopped state, the time for specifying the target information code is secured, and the specific information can be specified reliably. When a display medium having the same display pattern as the display medium of the specified information code is continuously sent, the information displayed on the display surface can be obtained by using the specific information at the time of verification by the verification means. The information code in which at least one of the code type of the code and the display position on the display surface is specified is continuously verified. For this reason, the verification target is clarified, and when the display medium is continuously sent at a predetermined speed that is higher than the specifying time by the specifying means, that is, the time taken for verification for one display medium. Even if it becomes shorter, it can be verified quickly and reliably. In particular, the specific information can be specified by the optical information verifier alone without receiving a specific instruction from the user via a terminal or the like.
Therefore, it is possible to suitably learn (specify and store) the specific information and shorten the verification time of the information code displayed on the display surface of the display medium.

  In the invention of claim 2, when verification based on one of the plurality of specific information stored in the storage means fails by the verification means, based on the other one of the plurality of specific information, The display state of the information code for which this verification has failed is verified. In this way, by storing a plurality of specific information such as specific information that is highly likely to be verified in the storage means in advance, even if verification based on one specific information fails, other specific information is immediately available. Based on the verification. Thereby, even when the display medium continuously sent becomes a plurality of types of display patterns, the verification time of the information code can be surely shortened.

  In the invention of claim 3, when the verification based on the specific information fails by the verification means, the verification is verified by the specifying means in a state where the predetermined speed is decelerated from the state where the specific information is not specified or stopped by the control means. Specific information is newly specified based on the failed captured image or a newly captured image, and is further stored in the storage unit.

  As described above, when verification based on one specific information fails, specific information is newly specified based on a captured image that has failed verification or a newly captured image. Therefore, the specific information is stored in the storage unit in advance. Even when a display medium having an undisplayed display pattern is continuously sent, specific information corresponding to the display pattern is specified and stored. This eliminates the need to previously specify and store specific information corresponding to a plurality of types of display patterns in advance, and thus can shorten the verification time of the information code more reliably.

  In the invention of claim 4, when the verification based on one of the plurality of specific information stored in the storage means fails by the verification means, the predetermined specific information excluding the one specific information is predetermined. Based on the specific information having a high priority according to the information, the display state of the information code for which the verification has failed is verified. As a result, even if verification based on one specific information fails, verification based on other specific information having high priority is performed, so that the display media that are continuously sent include a plurality of types of display patterns. Even in this case, the verification time of the information code can be shortened more reliably.

  In the invention of claim 5, when the verification based on the specific information fails by the verification means, the captured image failed to be verified in the state where the predetermined speed is decelerated from the state where the specific information is not specified by the control means or in the stopped state. Alternatively, the specifying information is specified by the specifying unit based on the newly picked up image. When the specific information is specified by the specifying means as described above, the specific information is overwritten and stored in the storage means, and the display state of the information code included in the captured image is verified by the verification means based on the specific information. Is done. In this way, even if only the latest specific information is always stored in the storage means, the verification target becomes clear, so that the verification time of the information code can be shortened.

It is explanatory drawing which shows roughly the relationship between the optical information verification machine which concerns on 1st Embodiment, and a paper. It is explanatory drawing which illustrates the display surface of each printing label sent continuously. It is a block diagram which shows the electrical structure of the optical information verification machine of FIG. It is explanatory drawing which illustrates the specific information which specifies the barcode displayed on the display surface of FIG. It is a flowchart which illustrates the flow of the verification process implemented in a control part in 1st Embodiment. It is a flowchart which illustrates the subroutine of the specific information setting process of FIG. It is explanatory drawing which illustrates the printed label in which the some information code in the modification of 1st Embodiment was displayed on the display surface. It is a flowchart which illustrates the flow of the verification process implemented in a control part in 2nd Embodiment. It is a flowchart which illustrates the subroutine of the specific information setting process of FIG.

[First Embodiment]
Hereinafter, a first embodiment in which an optical information verifier according to the present invention is embodied will be described with reference to the drawings. FIG. 1 is an explanatory diagram schematically showing the relationship between the optical information verifier 20 and the print label 12 according to the first embodiment. FIG. 2 is an explanatory view illustrating the display surface 13 of each print label 12 sent continuously. FIG. 3 is a block diagram showing an electrical configuration of the optical information verifier 20 of FIG.

  The optical information verifier 20 according to the first embodiment is a verifier for automatically verifying, for each display medium, information codes respectively displayed on the display surfaces of a plurality of display media sent continuously. It is. Here, verification refers to whether or not the display state of the information code displayed on the display surface is correct, for example, whether or not the ratio of black to white and the ratio of vertical and horizontal are correct. That means.

  In the first embodiment, as shown in FIGS. 1 and 2, the barcode B printed (displayed) on the display surface 13 of each print label 12 continuously printed by the label printer 11 is a verification target. is there. The optical information verifier 20 automatically verifies each printed label 12 that is continuously printed and sent by the label printer 11. The label printer 11 can adjust the speed at which each printed label 12 is continuously fed to the optical information verifier 20 (hereinafter referred to as the “feed speed V”) in accordance with the speed control signal received from the optical information verifier 20. It is configured. In addition, a partition line 12a is provided between the print label 12 and another adjacent print label 12, and the other is adjacent to the print label 12 by detecting the partition line 12a. The print label 12 is distinguished.

  As shown in FIG. 3, the optical information verifier 20 mainly stores an imaging unit 22 including a camera (not shown) that captures an image, an input unit 23 including an input key (not shown), and predetermined information. A storage unit 24, a display unit 25 including a liquid crystal display, and a control unit 21 for controlling these in an integrated manner are provided. The control unit 21 is configured to be able to transmit a speed control signal for controlling the feeding speed V to the label printer 11. The storage unit 24 is a semiconductor memory or the like, and the storage unit 24 includes a captured image captured by the imaging unit 22, information data processed by the control unit 21, a program for performing verification processing, and a later-described specific Information is stored.

  Accordingly, the optical information verification machine 20 is configured as an apparatus capable of performing verification processing for imaging and verifying the barcode B printed on the display surface 13 of each print label 12 that is continuously sent. Is done. The imaging unit 22 and the storage unit 24 correspond to an example of “imaging unit” and “storage unit” recited in the claims.

  Next, verification processing by the control unit 21 in the first embodiment will be described with reference to FIGS. FIG. 4 is an explanatory diagram illustrating specific information for specifying the barcode B displayed on the display surface 13 of FIG. FIG. 5 is a flowchart illustrating the flow of the verification process performed by the control unit 21 in the first embodiment. FIG. 6 is a flowchart illustrating the specific information setting process subroutine of FIG.

  In the verification process in the present embodiment, the barcode B printed on the display surface 13 of each print label 12 that is continuously sent at a predetermined feeding speed (hereinafter referred to as the feeding speed Vo at the time of verification) at the time of verification. Is verified based on specific information for specifying the barcode B with respect to the display surface 13. Thereby, the verification target with respect to the display surface 13 becomes clear, and verification time can be shortened compared with the case where the display state of the information code which is the verification target is unknown. The verification delivery speed Vo may correspond to an example of a “predetermined speed” recited in the claims.

  Here, in this embodiment, as specific information, as illustrated in FIG. 4, the code type of the information code to be verified (Bar code in FIG. 4) and the display position of this information code on the display surface 13 (FIG. 4). The upper left coordinates: 110, 230 and the lower right coordinates: 170, 250) are employed.

Hereinafter, the verification processing in the present embodiment will be described in detail using the flowcharts shown in FIGS. 5 and 6.
First, after the power is turned on and a predetermined initial setting is made, the leading print label 12 among the plurality of print labels 12 to be verified is up to a predetermined position with respect to the imaging unit 22 of the optical information verifier 20. When the image is sent, an imaging process is performed in step S101 in FIG. 5, and the display surface 13 of the print label 12 including the barcode B is acquired as a captured image by the imaging unit 22.

  Next, in step S103, it is determined whether or not the specific information is stored in the storage unit 24. If the specific information is not stored in the storage unit 24, it is determined No in step S103, and a specific information setting process subroutine is executed in step S200. In the specific information setting process subroutine, first, a deceleration signal output process is performed in step S201 of FIG. In this process, a deceleration signal (speed control signal) for decelerating the feeding speed V from the feeding speed Vo at the time of verification is output to the label printer 11. Note that the control unit 21 that executes the specific information setting process may correspond to an example of “specific means” and “control means” recited in the claims.

  When receiving the deceleration signal, the label printer 11 decelerates the speed at which each print label 12 is sent. As a result, the feeding speed V at which the printing labels 12 are continuously fed is decelerated from the feeding speed Vo at the time of verification. The reason for reducing the feeding speed V in this way is that the specific information is specified for the barcode B with respect to the display surface 13 of the print label 12 to be verified at the present time until the next print label 12 is sent. This is to ensure the time for this. For this reason, you may make it the stop state which stops feeding of each printing label 12, not only reducing the sending speed V. FIG.

  As described above, when the feeding speed V is decelerated, reading processing is performed in step S203. In this process, the process for optically reading the information code is performed for the entire area corresponding to the display surface 13 on the captured image captured in step 101. When the information code is read in the area corresponding to the display surface 13, it is determined as Yes in step S205 as a successful reading.

  Next, in step S207, specific information overwriting processing is performed. In this process, the code type of the information code read in step S203 and the display position of the information code on the display surface 13 are overwritten and stored in the storage unit 24 as specific information. At this stage, since the specific information is not stored in the storage unit 24, it is simply stored without being overwritten.

  In step S209, an acceleration signal output process is performed. In this process, a speed increasing signal (speed control signal) for returning the slowed feeding speed V to the feeding speed Vo at the time of verification is output to the label printer 11. When the label printer 11 receives the speed increase signal, the label printer 11 increases the speed at which each print label 12 is sent back to the verification feed speed Vo. As a result, the feeding speed V at which the print labels 12 are continuously sent is returned to the feeding speed Vo at the time of verification.

  If there is no readable information code in the area corresponding to the display surface 13 with respect to the captured image captured in step 101, it is determined No in step S205 as a reading failure. In this case, since the information code to be verified is not displayed on the display surface 13 or is unreadable, a stop signal output process is performed in step S211, and each print label 12 is output to the label printer 11. A stop signal (speed control signal) for stopping the feeding is output. Then, the verification process including the specific information setting process ends.

  When receiving the stop signal, the label printer 11 stops sending the print labels 12. In step S213, warning processing is performed, and information indicating that the information code to be verified is not displayed on the display surface 13 or is unreadable is displayed on the display unit 25. As a result, the administrator (user) of the optical information verification machine 20 is notified of the state where the verification is impossible, and is prompted to take action to restart the verification. In this warning process, a beep sound or the like may be used to notify a state that cannot be verified.

  When the acceleration signal output process is performed in step S209 as described above and the specific information setting process subroutine is completed, the specific information reading process is performed in step S105 of FIG. In this process, the specific information overwritten in step S207 is read from the storage unit 24. In step S107, a verification process based on the specific information is performed, and an information code displayed on the display surface 13 for the captured image captured in step S101 based on the specific information read as described above. Is verified. At this stage, verification is successful because the information code in which the specific information is set becomes the verification target, and it is determined Yes in step S109. The control unit 21 that executes the verification process based on the specific information can correspond to an example of a “verification unit” described in the claims.

  Since the verification of the predetermined number of print labels 12 has not been completed, if it is determined No in step S111, the process from step S101 is performed again, and is sent next to the print label 12 verified this time. The coming print label 12 is imaged, and processing for verifying the captured image is performed. At this stage, the print label 12 is sent by the label printer 11 at the verification delivery speed Vo. And since specific information is memorize | stored in the memory | storage part 24 as mentioned above, it determines with Yes in step S103.

  In step S107, based on the specific information read in step S105 as described above, verification of the information code displayed on the display surface 13 is performed on the captured image captured in step S101. . When the printed label 12 on which the barcode B corresponding to the specific information is displayed on the display surface 13 is sent, the code type and the display position are clear, so that verification can be performed in a short time. Can do. For this reason, it is possible to set the verification feeding speed Vo as a relatively high speed as the feeding speed V at which each printing label 12 is continuously sent. Therefore, it is necessary to continuously verify a plurality of printing labels 12. Total verification time can be shortened. If the verification is successful (Yes in S109) and verification of the planned number of print labels 12 is not completed (No in Step S111), the print label 12 sent next to the print label 12 that has been successfully verified. In contrast, the processing from step S101 is repeated.

  If the print label 12 on which the information code of the display pattern different from the barcode B when the specific information is set is sent during the repetition processing from step S101, the verification processing in step S107 fails. Therefore, it is determined No in step S109. In this case, the subroutine of the specific information setting process in step S200 described above is executed, and the process after step S201 is performed on the information code displayed on the display surface 13 of the print label 12 for which the verification process has failed, The specific information is specified and the storage unit 24 is overwritten in a state where the speed V is decelerated from the delivery speed Vo at the time of verification. Then, the processing after step S105 is performed, and verification is performed based on the specific information newly overwritten in the storage unit 24.

  As described above, in the optical information verification machine 20 according to the present embodiment, the feeding speed V at which the print labels 12 to be verified are continuously sent is reduced from the feeding speed Vo at the time of verification ( (In the stop state), the specific information of the information code (barcode B) displayed on the display surface 13 of the print label 12 is specified and stored in the storage unit 24 based on the captured image captured by the imaging process. Remembered. For each print label 12 that is continuously sent at the verification delivery speed Vo, the display state of each information code included in the captured image obtained by capturing each display surface 13 for each print label 12 is: The verification is performed based on the specific information stored in the storage unit 24.

As described above, when specifying the code type of the information code displayed on the display surface 13 and the display position with respect to the display surface as specific information, the feeding speed Vo at the time of verification is reduced (becomes a stopped state). Therefore, the time for specifying the target information code is secured, and the specifying information can be specified with certainty. When the print label 12 having the same display pattern as the print label 12 of the specified information code is continuously sent, the information displayed on the display surface 13 is used by using the specific information at the time of verification. The information code in which the code type of the code and the display position on the display surface 13 are specified is continuously verified. For this reason, the verification target is clarified, and when the print label 12 is continuously sent at the verification input speed Vo, which is faster than the specific time for specifying the specific information, that is, one print label 12. Even when the time required for verification is shortened, verification can be performed quickly and reliably. In particular, the specific information can be specified by the optical information verifier alone without receiving a specific instruction from the user via a terminal or the like.
Therefore, it is possible to preferably learn (specify and store) the specific information and shorten the verification time of the information code displayed on the display surface 13 of the print label 12.

FIG. 7 is an explanatory diagram illustrating the display surface 13 on which the information code in the modification of the first embodiment is displayed.
As a modified example of the first embodiment, the specific information is not limited to the case where one information code is displayed on the display surface 13 of the print label 12, but as illustrated in FIG. The information codes C1 to C4 may be set even when displayed at predetermined positions on the display surface 13, respectively. As described above, even when a plurality of types of information codes C1 to C4 are displayed on the display surface 13, the verification time of each print label 12 can be shortened by setting specific information corresponding thereto. .

[Second Embodiment]
Next, an optical information verifier according to a second embodiment of the present invention will be described with reference to FIGS. FIG. 8 is a flowchart illustrating the flow of the verification process performed by the control unit 21 in the second embodiment. FIG. 9 is a flowchart illustrating the specific information setting processing subroutine of FIG.

  In the optical information verifier 20 according to the second embodiment, a plurality of pieces of specific information are stored in the storage unit 24. In the verification process described above, the flowcharts of FIGS. 8 and 9 are used instead of the flowcharts of FIGS. The difference between the optical information verifier according to the first embodiment and the optical information verifier according to the first embodiment is that the calculation processing is based on the above. Therefore, substantially the same components as those of the optical information verifier of the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.

  In the second embodiment, the plurality of specific information and the predetermined information attached to determine the priority according to the priority condition regarding the verification set in advance for the plurality of specific information are stored in the storage unit. 24. Here, the priority is, for example, the verification frequency, and is set such that the higher the verification frequency, the higher the priority. And when reading specific information from the memory | storage part 24, specific information with high priority is selected and read out among several specific information memorize | stored in the memory | storage part 24. FIG. Note that the priority order is not limited to the above-described verification frequency, and may be information such as a stored date, or may be a priority order obtained by combining the conditions.

Hereinafter, the verification process by the control unit 21 in the second embodiment will be described with reference to the flowcharts of FIGS. 8 and 9.
Similar to the verification process in the first embodiment, if the verification has failed and it is determined No in step S109 in FIG. 8, a subroutine for the specific information setting process is executed in step S200a. In the specific information setting processing subroutine, the processing subsequent to step S201 in FIG. 9 is performed in the same manner as in the first embodiment, and the display surface 13 is displayed in a state where the feeding speed V is decelerated from the feeding speed Vo at the time of verification. If the information code is read in the area corresponding to, it is determined as Yes in step S205 as successful reading.

  In step S207a, specific information addition storage processing is performed. In this process, for the information code that failed to be verified based on the specific information as described above, the code type and the display position of the information code on the display surface 13 are further added to the storage unit 24 and stored as specific information. The Subsequently, an acceleration signal output process is performed in step S209, and the specific information setting process ends.

  Then, in step S105a in FIG. 8, a specific information selection process is performed. In this process, as described above, the specific information having a high priority is selected and read out from the plurality of specific information stored in the storage unit 24. Specifically, specific information with a high verification frequency is selected and read, except for specific information that has failed verification. In step S107, verification of the information code displayed on the display surface 13 is performed on the captured image captured in step S101 based on the specific information thus selected and read. Become.

  As described above, in the optical information verifier 20 according to the present embodiment, when verification based on the specific information fails, the feeding speed V is reduced from the feeding speed Vo at the time of verification (or in a stopped state). ), Specific information is newly specified based on the captured image for which verification has failed, and is further stored in the storage unit 24.

  In this way, if the verification based on the one specific information fails, the specific information is newly specified based on the captured image for which the verification has failed, so printing of the display pattern in which the specific information is not stored in advance in the storage unit 24 Even when the labels 12 are continuously sent, the specific information corresponding to the display pattern is specified and stored. This eliminates the need to previously specify and store specific information corresponding to a plurality of types of display patterns in advance, and thus can shorten the verification time of the information code more reliably. Note that the specific information is not limited to newly specified based on the captured image for which verification has failed, but specific information may be newly specified based on the newly captured image.

  Further, when verification based on one of the plurality of specific information stored in the storage unit 24 fails, based on the specific information having a high priority among the plurality of specific information excluding the one specific information, The display state of the information code for which this verification has failed is verified. As a result, even if verification based on one specific information fails, verification based on other specific information having high priority is performed. Even in the case of a pattern, the verification time of the information code can be shortened more reliably.

  In addition, when a plurality of specific information is stored in the storage unit 24, when verification based on one of the plurality of specific information stored in the storage unit 24 fails (No in S109), in step S200a The display state of the information code for which this verification has failed may be verified based on the other one of the plurality of specific information already stored in the storage unit 24 without newly setting specific information. In this way, by storing a plurality of specific information such as specific information that is highly likely to be verified in the storage unit 24 in advance, even if verification based on one specific information fails, another specific information is immediately obtained. Information-based verification is performed. Thereby, even when the print label 12 sent continuously becomes a plurality of types of display patterns, the verification time of the information code can be surely shortened.

In addition, this invention is not limited to the said embodiment, You may actualize as follows.
(1) The verification target described above is not limited to the plurality of print labels 12, but may be a plurality of display media that are continuously sent, such as continuous paper.

(2) The specific information described above is not limited to the code type of the information code to be verified and the display position of the information code on the display surface 13, but is any one of the code type and the display position on the display surface 13, for example. However, other information for specifying the information code may be used.

11. Label printer 12 ... Print label (display medium)
DESCRIPTION OF SYMBOLS 13 ... Display surface 20 ... Optical information verification machine 21 ... Control part 22 ... Imaging part (imaging means)
24 ... Storage unit B ... Bar code (information code)
C1 to C4 ... Information code V ... Feeding speed Vo ... Sending speed during verification (predetermined speed)

Claims (5)

Imaging means for imaging for each display medium the information codes respectively displayed on the display surfaces of the plurality of display media sent continuously at a predetermined speed;
Verification means for verifying a display state of the information code included in the captured image captured by the imaging means;
An optical information verification machine comprising:
Identification means capable of identifying as identification information at least one of the code type of the information code displayed on the display surface and the display position on the display surface based on the captured image;
Storage means for storing the specific information specified by the specifying means;
Control means capable of controlling the predetermined speed;
With
The control means is configured to decelerate or stop the predetermined speed when specifying the specific information based on the captured image by the specifying means from a state where the specific information is not specified,
The verification unit verifies a display state of the information code included in the captured image based on the specific information stored in the storage unit. The storage means stores a plurality of the specific information,
The verification means includes
When verification of the display state of the information code included in the captured image based on one of the plurality of specific information stored in the storage unit fails, another one of the plurality of specific information The optical information verifier according to claim 1, wherein a display state of the information code in which the verification has failed is verified based on the information. The specifying means is:
When the verification unit fails to verify the display state of the information code included in the captured image based on the specific information, the control unit decelerates the predetermined speed from a state in which the specific information is not specified. In the stopped state, the identification information is newly specified based on a captured image in which the verification has failed or a newly captured image,
The optical information verifier according to claim 2, wherein the newly specified specific information is further stored in the storage unit. In the storage means, predetermined information for determining a priority order according to a priority condition regarding a preset verification is added to the plurality of specific information and stored.
The verification means includes
When verification of the display state of the information code included in the captured image based on one of the plurality of specific information stored in the storage unit fails, the plurality of specific information excluding the one specific information 4. The optical information according to claim 2, wherein the display state of the information code for which the verification has failed is verified based on the specific information having a high priority according to the predetermined information. Verification machine. The specifying means is:
When the verification unit fails to verify the display state of the information code included in the captured image based on the specific information, the control unit decelerates the predetermined speed from a state in which the specific information is not specified. Or specifying the specific information based on a captured image in which the verification has failed or a newly captured image,
In the storage unit, when the specific information is specified by the specifying unit, the specific information is overwritten and stored,
The verification unit verifies a display state of the information code included in the captured image based on the specific information when the specific information is overwritten and stored in the storage unit. Optical information verifier described in 1.

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