JP2011204093A - Optical information verification machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical information verification machine that reduces the time for verifying a plurality of displayed information codes.SOLUTION: On a display surface 13 of a paper sheet 12, the code types of information codes C1a-C1c to be verified and a label format code C1o including a display position to the display surface 13 as specific information are displayed at specific positions on the display surface 13. Then, the information codes C1a-C1c included in a captured image are verified on the basis of the specific information obtained by decoding the label format code C1o included in the captured image.

Description

  The present invention relates to an optical information verifier for verifying a plurality of information codes displayed on a display surface of a display medium.

  Conventionally, as a technique related to an optical information verifier that verifies a plurality of information codes displayed on a display surface of a display medium, a printing apparatus shown in Patent Document 1 below is known. This printing apparatus 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 determined information code is 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 as shown in Patent Document 1 or Patent Document 2 described above, when verifying an unspecified number of information codes displayed on the display surface of the display medium, which position of the captured image obtained by imaging the display surface Since it is unknown whether the type information code is displayed, it takes time to specify the information code included in the captured image. Therefore, 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 capable of shortening the verification time of a plurality of displayed information codes.

  In order to achieve the above object, in the optical information verifier according to claim 1 according to the claims, the imaging means for imaging a plurality of information codes displayed on the display surface of the display medium, and the imaging by the imaging means A verification unit that verifies a display state of each information code included in the captured image, and includes a decoding unit that can decode the information code included in the captured image, On the display medium, a specific code including at least one of a code type of another information code and a display position with respect to the display surface as specific information is displayed at a specific position with respect to the display surface, and the verification is performed. The means is obtained by decoding the other information code included in the captured image by decoding the specific code included in the captured image by the decoding unit. Based on the constant information, and wherein the verifying.

  The invention of claim 2 is the optical information verifier according to claim 1, wherein the specific number for specifying the specific information of the display medium and the specific information specified by the specific number are: Storage means stored in association with each other, the specific code includes only the specific number, and the verification unit includes the other information code included in the captured image included in the captured image. Verification is performed based on the specific information stored in the storage unit in association with the specific number obtained by decoding the specific code by the decoding unit.

  According to a third aspect of the present invention, in the optical information verifier according to the second aspect, the verification unit stores the specific information corresponding to the specific number obtained by decoding the specific code in the storage unit. If not, the other information code included in the captured image is verified without being based on the specific information, and the specific information acquired at the time of the verification is associated with the specific number of the specific code. And stored in the storage means.

  According to a fourth aspect of the present invention, in the optical information verifier according to the first aspect, the specific code further includes at least one of data scheduled to be included in the other information code and the number of digits of the data. And a collating unit that collates a decoding result obtained by decoding the other information code by the decoding unit based on the collation information obtained by decoding the specific code by the decoding unit. To do.

  A fifth aspect of the present invention is the optical information verifier according to the fourth aspect, wherein a specific number for specifying the specific information of the display medium, the specific information specified by the specific number, and the verification Storage means for storing information in association with each other, wherein the specific code includes only the specific number, and the verification means uses the other information code included in the captured image as the captured image. The specific code included in the code is verified based on the specific information associated with the specific number obtained by decoding by the decoding means and stored in the storage means. The decoding result obtained by decoding the other information code is associated with the specific number obtained by decoding the specific code by the decoding means. And wherein the matching on the basis of the verification information stored in the storage means Te.

  In the first aspect of the invention, the display medium displays a specific code including at least one of the code type of another information code and the display position with respect to the display surface as specific information at a specific position with respect to the display surface. Has been. The other information code included in the captured image is verified by the verification unit based on the specific information obtained by decoding the specific code included in the captured image by the decoding unit.

Thereby, even when verifying an unspecified number of other information codes, by decoding the specific code, at least one of the code type of the other information code and the display position with respect to the display surface is specified information. Therefore, the verification target is clarified by this specific information, and the time required for verification can be shortened.
Therefore, it is possible to shorten the verification time for a large number of unspecified information codes.

  In the invention of claim 2, the specific number for specifying the specific information of the display medium and the specific information specified by the specific number are stored in association with the storage means. The specific code includes only a specific number. The other information code included in the captured image is verified based on the specific information stored in the storage unit in association with the specific number obtained from the specific code included in the captured image.

  As described above, even when only a specific number is included in the specific code, the verification target is clarified by the specific information stored in advance in the storage means and the verification time is shortened, so that the amount of information necessary for the specific code can be reduced. it can.

  In the invention of claim 3, when the specific information corresponding to the specific number obtained by decoding the specific code is not stored in the storage means, the other information code included in the captured image is based on the specific information. Without being verified by the verification means. And the specific information acquired at the time of this verification is linked | related with the specific number of the said specific code, and is memorize | stored in a memory | storage means.

  As a result, when an information code in which specific information is not stored in advance is verified, the specific information acquired at the time of verification is stored in association with the specific number. The verification time can be shortened by using the specific information stored in association with the read.

  In the invention of claim 4, in addition to the specific information, the specific code further includes at least one of data scheduled to be included in another information code and the number of digits of the data as collation information. Then, the collating unit collates the decoding result obtained by decoding the other information code by the decoding unit based on the collation information obtained by decoding the specific code by the decoding unit.

  As a result, the decoding results obtained by decoding other information codes are collated based on the collation information, so that the verification time for each information code can be shortened and the collation can be performed smoothly.

  In the invention of claim 5, a specific number for specifying the specific information of the display medium, and specific information and collation information specified by the specific number are stored in association with the storage means. The specific code includes only a specific number. Then, the other information code included in the captured image is verified based on the specific information stored in the storage unit in association with the specific number obtained from the specific code included in the captured image. Furthermore, the decoding results obtained by decoding other information codes are collated based on the collation information stored in the storage means in association with the specific number obtained by decoding the specific code.

  As described above, even when only a specific number is included in the specific code, the verification target is clarified by the specific information stored in advance in the storage means, the verification time is shortened, and the verification work is performed by the verification information stored in the storage means. Is smoothly implemented, the amount of information necessary for the specific code can be reduced.

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 where each information code in 1st Embodiment was displayed. It is explanatory drawing which shows the specific information contained in the label format code of FIG. It is a block diagram which shows the electrical structure of the optical information verification machine of FIG. It is a flowchart which illustrates the flow of the verification process implemented in a control part in 1st Embodiment. It is explanatory drawing which illustrates the display surface where each information code in the modification of 1st Embodiment was displayed. It is explanatory drawing which shows the specific information contained in the label format code of FIG. It is explanatory drawing which illustrates the display surface where each information code in 2nd Embodiment was displayed. It is a flowchart which illustrates the flow of the verification process implemented in a control part in 2nd Embodiment. It is explanatory drawing which shows the specific information contained in a label format code in 3rd Embodiment. It is a flowchart which illustrates the flow of the verification process implemented in a control part in 3rd Embodiment. It is a flowchart which illustrates the flow of the verification process implemented in a control part in 4th Embodiment.

[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 paper 12 according to the first embodiment. FIG. 2 is an explanatory diagram illustrating the display surface 13 on which each information code is displayed in the first embodiment. FIG. 3 is an explanatory diagram showing specific information included in the label format code C1o of FIG. FIG. 4 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 images information codes such as a plurality of one-dimensional codes and two-dimensional codes displayed on a display medium as one image, and each information code included in the captured image. It is a verification machine for verifying automatically. Here, verification refers to whether or not the display state of each information code displayed on the display surface is correct, for example, whether or not the ratio of black to white and the vertical / horizontal ratio is correct. To do. In the first embodiment, as shown in FIGS. 1 and 2, three information codes C1a to C1c printed (displayed) on the display surface 13 of the paper 12 as a display medium by the printer 11 are to be verified, A plurality of sheets 12 are printed by the printer 11, and each of these sheets 12 is sequentially sent to the optical information verifier 20 to be verified each time.

  Here, the information code displayed on the display surface 13 of the paper 12 will be described. As shown in FIG. 2, the display surface 13 of the paper 12 has a label format code in addition to the information codes C1a to C1c to be verified. C1o is printed at a specific position (upper right in FIG. 2). The label format code C1o includes the format number exemplified in FIG. 3, the code type of each information code displayed on the display surface 13, and the display position with respect to the display surface 13 as specific information. That is, according to the decoding result obtained by decoding the label format code C1o on the display surface 13, the code types and display positions of the other information codes C1a to C1c printed on the display surface 13 are specified. The identification information of the information code C1a shown in FIG. 2 corresponds to the code type and display position (upper left coordinates and lower right coordinates) of the code 1 shown in FIG. 3, and the identification information of the information code C1b shown in FIG. The specific information of the information code C1c shown in FIG. 2 corresponds to the code type and display position of the code 3 shown in FIG. The label format code C1o and the format number correspond to an example of “specific code” and “specific number” described in the claims.

  As shown in FIG. 4, the optical information verifier 20 mainly includes an imaging unit 22 including a camera (not illustrated) that captures an image, an input unit 23 including an input key (not illustrated), and a storage unit 24 that stores information. And a display unit 25 including a liquid crystal display, and a control unit 21 for controlling them. The captured image captured by the imaging unit 22, the information data processed by the control unit 21, a program for performing verification processing, and the like are configured to be stored in the storage unit 24. Accordingly, the optical information verification machine 20 is configured as an apparatus capable of performing verification processing for imaging and verifying each information code printed on the display surface 13 of the paper 12. 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 the drawings. FIG. 5 is a flowchart illustrating the flow of the verification process performed by the control unit 21 in the first embodiment.
First, after the power is turned on and a predetermined initial setting is made, when the paper 12 to be verified is placed at a predetermined position with respect to the imaging unit 22 of the optical information verification machine 20, step S101 in FIG. The imaging process is performed, and the display surface 13 of the paper 12 including the information codes C1a to C1c and the label format code C1o is acquired by the imaging unit 22 as one captured image.

  Next, in step S103, the label format code C1o is decoded. In this process, a known decoding process is performed on the label format code C1o included in the captured image captured in step S101. Since the label format code C1o is printed at a specific position on the display surface 13 as described above, the time required for the decoding process is shortened compared to the case where the position of the label format code C1o is not clear. can do. The control unit 21 that executes Step S103 corresponds to an example of “decoding means” recited in the claims.

  Subsequently, specific information acquisition processing is performed in step S105. Based on the decoding result of the label format code C1o, the specific information shown in FIG. 3, that is, the code type of each information code, the display position with respect to the display surface 13, and the format number And are acquired. When the specific information is acquired in this way, in step S107, verification processing is individually performed on the first information code (C1a in FIG. 2 and code 1 in FIG. 3). In this process, the information code C1a is specified for the image corresponding to the display position of the acquired code 1 in the captured image, and the display is performed based on the code type and the like for the specified information code C1a. It is verified whether the state is the correct state. If the verification result of the information code C1a is good, it is determined No in step S109 in order to verify the next information code C1b, and the information code C1a and the information code C1c are the information code C1a. The same verification process is performed in step S107. In addition, when the verification result in step S107 is not favorable, the fact is notified by a liquid crystal display. The control unit 21 that executes Step S107 corresponds to an example of an “imaging unit” recited in the claims.

  Thus, when verification of each information code C1a-C1c is complete | finished, it determines with Yes in step S109, and is the format number acquired in step S105 memorize | stored in the memory | storage part 24 in step S111? It is determined whether or not. If the format No is not stored in the storage unit 24, it is determined No in step S111, and the storage process is performed in step S113. In this storage process, the format number acquired in step S105, the code type of each information code C1a to C1c, and the display position on the display surface 13 are associated with each other and stored in the storage unit 24 to verify the paper 12 Processing ends. On the other hand, if the format number is stored in the storage unit 24, it is determined Yes in step S111, and the verification process for the paper 12 is completed.

  As described above, in the optical information verifier 20 according to the first embodiment, the display surface 13 of the paper 12 has the code type of each information code C1a to C1c to be verified and the display position with respect to the display surface 13. Is included in the specific position with respect to the display surface 13. Each information code C1a to C1c included in the captured image is verified based on specific information obtained by decoding the label format code C1o included in the captured image.

Thereby, even when a large number of unspecified information codes are verified, by decoding the label format code C1o, the code type of each information code and the display position on the display surface 13 are specified as the specific information. This specific information makes it possible to clarify the verification target and shorten the time required for verification. Even if the sheets 12 are successively sent as continuous sheets and the display contents thereof are different, the time required for verification can be surely shortened.
Therefore, it is possible to shorten the verification time for a large number of unspecified information codes. Depending on the verification target, the label format code may include only the code type of each information code as specific information, or may include only the display position of each information code on the display surface 13.

FIG. 6 is an explanatory diagram illustrating a display surface on which each information code is displayed in the modification of the first embodiment. FIG. 7 is an explanatory diagram showing specific information included in the label format code of FIG.
As a modification of the first embodiment, when the information codes C2a and C2b displayed on the display surface 13 of the paper 12 shown in FIG. First, when the label format code C2o displayed at a specific position with respect to the display surface 13 in the captured image is decoded, specific information (code type and display) of each information code C2a and C2b illustrated in FIG. Position) is obtained. The verification time can be shortened by identifying and verifying each information code C2a, C2b in the captured image based on this specific information. The position of the label format code C2o with respect to the display surface 13 in this modification and the position of the label format code C1o with respect to the display surface 13 in the first embodiment are both set to a specific position on the display surface 13 (upper right in the figure). Therefore, even when various label format codes are decoded, the position of the label format code is easily specified, so that the time required for the verification process can be reduced.

[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 an explanatory view illustrating the display surface 13 on which the information codes C1a to C1c are displayed in the second embodiment. FIG. 9 is a flowchart illustrating the flow of the verification process performed by the control unit 21 in the second embodiment.

  In the optical information verifier 20 according to the second embodiment, only the format number is included in the label format code C3o, and the storage unit 24 has the format number and the specific information specified by the format number in advance. The point stored in association is different from the optical information verifier according to the first embodiment. 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, since only the format number is included in the label format code C3o, the amount of information necessary for the label format code is small. Therefore, as illustrated in FIG. The code is adopted. Further, the storage unit 24 stores in advance the format No and the specific information specified by the format No, that is, the code type of each information code and the display position on the display surface 13 in association with each other.

Hereinafter, the verification process by the control unit 21 in the second embodiment will be described with reference to the flowchart of FIG.
Similar to the verification process in the first embodiment, when the imaging process is performed in step S201 of FIG. 9 and the decoding process of the label format code C3o is performed in step S203, the format number is acquired. Next, in step S205, it is determined whether or not the format No acquired in step S203 is stored in the storage unit 24.

  Here, when the format No acquired in step S203 is stored in the storage unit 24 (Yes in S205), the specific information reading process is performed in step S207, and the storage unit is associated with the format No. The specific information (code type and display position) stored in 24 is read out. Subsequently, individual verification processing is performed in step S209. Based on the specific information read in step S207, verification processing of each information code displayed on the display surface 13 is performed individually as in the first embodiment. To be implemented.

  On the other hand, when the format No acquired in step S203 is not stored in the storage unit 24 (No in S205), specific information for specifying each information code displayed on the display surface 13 cannot be acquired. In step S213, image analysis processing is performed. In this process, a region that is recognized as an information code is extracted by analyzing all the regions corresponding to the display surface 13 of the captured image captured in step S201. Then, in step S215, individual verification processing is performed, and verification processing is performed without being based on the specific information as described above, assuming that any information code exists in the region extracted in step S213.

  When the individual verification process is completed (Yes in S217), a storage process is performed in step S219. In this process, the code type of each information code acquired and used in the individual verification process in step S215 and the display position with respect to the display surface 13 are associated with the format No acquired in step S203 as specific information, and the storage unit 24.

  As described above, in the optical information verifier 20 according to the second embodiment, the format No. for specifying the specific information on the display surface 13 and the specific information specified by the format No. It is stored in association with the storage unit 24. The label format code C1o includes only the format number. The information codes C1a to C1c included in the captured image are verified based on the specific information stored in the storage unit 24 in association with the format No obtained from the label format code C3o included in the captured image. Is done.

  Thus, even when only the format number is included in the label format code C3o, the verification target is clarified by the specific information stored in advance in the storage unit 24 and the verification time is shortened. Therefore, the amount of information necessary for the label format code C3o Can be reduced.

  Further, in the optical information verifier 20 according to the second embodiment, when the specific information corresponding to the format No obtained by decoding the label format code C3o is not stored in the storage unit 24, the captured image is displayed. Each of the information codes C1a to C1c included in is verified without being based on the specific information. And the specific information acquired at the time of this verification is linked | related with the said format No, and is memorize | stored in the memory | storage part 24. FIG.

  Thereby, when the information code in which the specific information is not stored is verified, the specific information acquired at the time of verification is stored in association with the format No. Therefore, the label format code including the format No is included next. The verification time can be shortened by using the specific information stored in association with C3o being read.

[Third Embodiment]
Next, an optical information verifier according to a third embodiment of the present invention will be described with reference to FIGS. FIG. 10 is an explanatory diagram showing specific information included in the label format code C4o in the third embodiment. FIG. 11 is a flowchart illustrating the flow of the verification process performed by the control unit in the third embodiment.

  In the optical information verifier 20 according to the third embodiment, verification processing of the information codes C1a to C1c is performed based on the specific information included in the label format code C4o, and the verification information included in the label format code C4o Is different from the optical information verifier according to the first embodiment in that collation processing of the information codes C1a to C1c is performed based on the first embodiment. 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.

  As shown in FIG. 10, in the third embodiment, the label format code C4o includes the format number, the code type of each information code, the specific information as the display position on the display surface 13, and the information code. Data to be recorded and collation information such as the number of digits of the data. In the verification process of the third embodiment, by using this verification information, a verification process for confirming data consistency is performed on the information code subjected to the individual verification process. Note that the collation information may include black / white reversal information and front / back information, as shown in the information of code 2 in FIG.

Hereinafter, the verification process by the control unit 21 in the third embodiment will be described with reference to the flowchart of FIG.
Similar to the verification process in the first embodiment, when the imaging process is performed in step S301 in FIG. 11, the label format code C4o is decoded in step S303. Next, information acquisition processing is performed in step S305, and the format No, specific information (code type and display position of each information code), and collation information (planned data of each information code and the number of data digits) are acquired. Is done.

  When the specific information and the collation information are acquired in this way, after the individual verification process is performed on the first information code C1a in step S307, the information code subjected to the verification process is decoded in step S309. Processing is done. Subsequently, individual collation processing is performed in step S311, and the data obtained from the decoding result and the number of data digits thereof, the planned data of the information code obtained as collation information in step S305, and the number of data digits thereof are obtained. Verification is done. If the verification result and collation result for the information code are good, it is determined No in step S313 to verify and collate the next information code, and the second and subsequent information codes are individually verified as described above. Processing and individual verification processing are performed. In addition, when the said verification result or collation result is not favorable, that is notified by a liquid crystal display etc.

  Thus, when the verification and verification of each information code is completed, it is determined Yes in step S313, and whether or not the format number acquired in step S305 is stored in the storage unit 24 in step S315. Is determined. If the format No is not stored in the storage unit 24, it is determined No in step S315, and the storage process is performed in step S317. In this storage process, the format number acquired in step S305, the specific information, and the collation information are associated with each other and stored in the storage unit 24, and the verification process for the paper 12 ends. On the other hand, if the format No is stored in the storage unit 24, it is determined Yes in step S315, and the verification process for the paper 12 ends.

  As described above, in the optical information verifier 20 according to the third embodiment, the label format code C4o includes, in addition to the specific information, data to be included in each information code C1a to C1c and its data The number of digits of data is included as collation information. The decoding results obtained by decoding the information codes C1a to C1c are collated based on the collation information obtained by decoding the label format code C4o.

  As a result, the decoding results obtained by decoding the information codes C1a to C1c are collated based on the collation information, so that the verification time for the information codes C1a to C1c can be shortened and the collation work can be performed smoothly. . Depending on the verification target, the label format code may include only the scheduled data of each information code as the verification information, or may include only the number of data digits.

[Fourth Embodiment]
Next, an optical information verifier according to a fourth embodiment of the present invention will be described with reference to FIGS. FIG. 12 is a flowchart illustrating the flow of the verification process performed by the control unit 21 in the fourth embodiment.

  In the optical information verifier 20 according to the fourth embodiment, only the format number is included in the label format code, and the storage unit 24 previously stores the format No and the specific information and collation information specified by the format No. Is stored in association with the optical information verifier according to the second embodiment. Therefore, substantially the same components as those of the optical information verifier of the second embodiment described above are denoted by the same reference numerals, and description thereof is omitted.

  In the fourth embodiment, since only the format number is included in the label format code, the amount of information necessary for the label format code is small. Therefore, as in the second embodiment, the label format code C3o A code is employed (see FIG. 8). In addition, the storage unit 24 stores in advance a format No, specific information (code type and display position) specified by the format No, and collation information (planned data and the number of data digits) in association with each other. Yes.

Hereinafter, the verification process by the control unit 21 in the fourth embodiment will be described with reference to the flowchart of FIG.
Similarly to the verification process in the second embodiment, when the imaging process is performed in step S401 in FIG. 12 and the label format code C3o is decoded in step S403, the format number is acquired. Next, in step S405, it is determined whether or not the format number acquired in step S403 is stored in the storage unit 24.

  Here, when the format number acquired in step S403 is stored in the storage unit 24 (Yes in S405), an information reading process is performed in step S407, and the storage unit 24 is associated with the format No. The specific information (code type and display position) and collation information (scheduled data and the number of data digits) stored in are read out. Subsequently, after individual verification processing is performed on the first information code in step S409, decoding processing is performed on the information code subjected to this verification processing in step S411. Subsequently, individual collation processing is performed in step S413, and collation of the data acquired from the decoding result and the number of data digits with the scheduled data of the information code read out in step S407 and the number of data digits is performed. Made. If the verification result and the verification result for the information code are good, it is determined No in step S415 to verify and verify the next information code, and the second and subsequent information codes are individually verified as described above. Processing and individual verification processing are performed.

  On the other hand, when the format No acquired in step S403 is not stored in the storage unit 24 (No in S405), specific information for specifying each information code displayed on the display surface 13 cannot be acquired. Similar to the second embodiment, after image analysis processing is performed in step S417, individual verification processing is performed in step S419 without being based on the specific information. When the individual verification process ends (Yes in S421), a storage process is performed in step S423, and the code type of each information code acquired and used in the individual verification process in step S419 and the display position on the display surface 13 are determined. The specific information is stored in the storage unit 24 in association with the format No acquired in step S403.

  If the verification information cannot be acquired because the format number acquired in step S403 is not stored in the storage unit 24, the verification process ends without performing the above-described verification process. In this case, the data obtained by decoding each information code acquired and used in the individual verification processing in step S419 and the number of data digits may be stored in the storage unit 24 in association with the format No as the collation information. Good.

  As described above, in the optical information verifier 20 according to the fourth embodiment, the format No, the specific information specified by the format No, and the collation information are stored in association with the storage unit 24. ing. The label format code C3o includes only the format number. Each information code C1a to C1c included in the captured image is verified based on the specific information stored in the storage unit 24 in association with the format No obtained from the label format code C3o included in the captured image. The Further, the decoding results obtained by decoding the information codes C1a to C1c are collated based on the collation information stored in the storage unit 24 in association with the format No obtained by decoding the label format code C3o.

  As described above, even when only the format No is included in the label format code C3o, the verification target is clarified by the specific information stored in advance in the storage unit 24, the verification time is shortened, and the verification stored in the storage unit 24 is performed. Since the collation operation is smoothly performed using information, the amount of information necessary for the label format code C3o can be reduced.

The present invention is not limited to the above embodiments, and may be embodied as follows. Even in this case, the same operations and effects as those of the above embodiments can be obtained.
(1) The verification target of the optical information verification machine 20 is not limited to each information code printed on the display surface of the paper, but includes, for example, each information code displayed on the display surface of a display medium such as a liquid crystal screen. May be.

(2) The specific information described above is not limited to the code type of each information code and the display position on the display surface 13, but may be information that is effective for the verification process, such as the cell size and the bar width. Moreover, the combination of these information may be sufficient.

(3) The collation information described above is not limited to the data scheduled to be included in each information code and the number of digits of the data, but is information useful for collation processing such as cell size, bar width, code version, etc. Also good. Moreover, the combination of these information may be sufficient.

12 ... paper (display medium)
DESCRIPTION OF SYMBOLS 13 ... Display surface 20 ... Optical information verification machine 21 ... Control part 22 ... Imaging part (imaging means)
24 ... Storage unit C1o, C2o, C3o, C4o ... Label format code (specific code)
C1a to C1c, C2a to C2c ... Information code

Claims (5)

Imaging means for imaging a plurality of information codes displayed on the display surface of the display medium;
Verification means for verifying a display state of each information code included in the captured image captured by the imaging means;
An optical information verification machine comprising:
A decoding means capable of decoding the information code included in the captured image;
On the display medium, a specific code including at least one of a code type of another information code and a display position with respect to the display surface is displayed at a specific position with respect to the display surface,
The verification unit verifies the other information code included in the captured image based on the specific information obtained by decoding the specific code included in the captured image by the decoding unit. Optical information verification machine. A storage unit for storing a specific number for specifying the specific information of the display medium and the specific information specified by the specific number;
The specific code includes only the specific number,
The verification unit associates the other information code included in the captured image with the specific number obtained by decoding the specific code included in the captured image by the decoding unit and stores the information code in the storage unit. The optical information verifier according to claim 1, wherein verification is performed based on the stored specific information. The verification means, when the specific information corresponding to the specific number obtained by decoding the specific code is not stored in the storage means, the other information code included in the captured image, Verify without specific information,
3. The optical information verifier according to claim 2, wherein the specific information acquired at the time of verification is stored in the storage unit in association with the specific number of the specific code. The specific code further includes at least one of data scheduled to be included in the other information code and the number of digits of the data as collation information,
2. A collating unit that collates a decoding result obtained by decoding the other information code by the decoding unit based on the collation information obtained by decoding the specific code by the decoding unit. Optical information verifier described in 1. A storage unit for storing a specific number for specifying the specific information of the display medium, the specific information specified by the specific number, and the collation information;
The specific code includes only the specific number,
The verification unit associates the other information code included in the captured image with the specific number obtained by decoding the specific code included in the captured image by the decoding unit and stores the information code in the storage unit. Verification based on the stored specific information,
The collating means stores a decoding result obtained by decoding the other information code by the decoding means in association with the specific number obtained by decoding the specific code by the decoding means and stored in the storage means. 5. The optical information verifier according to claim 4, wherein collation is performed based on the collation information.

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