JP5708389B2 - Reading apparatus and reading system - Google Patents

Description

  The present invention relates to a reading apparatus and a reading system.

  An information code such as a QR code (registered trademark) is currently used for various purposes, and in many cases, useful information or information that can be useful is recorded in the information code and provided to the user. For example, when an information code is attached to a coupon or gift certificate, a method of recording discount contents or monetary contents in the code is conceivable. When an information code is attached to a lottery ticket or the like, the number used for the lottery, etc. A method of recording in the code is considered. In this way, when using an information code, for example, in the case of a lottery ticket, the service provider can easily obtain a lottery number simply by reading the information code presented by the user, and confirming the winning etc. reliably and easily. Because it can be done, it can improve business efficiency.

  However, when such useful information or information that can be useful is recorded in an information code and used, forgery of the information code becomes a problem. For example, in the case of lottery tickets, there are concerns about unauthorized tampering such as changing the lottery ticket that was originally out of place, and even with coupon tickets etc., the recorded content has been changed to more advantageous content for the user. There are concerns about unauthorized tampering. If such unauthorized tampering is performed, there is a risk that the provider side may suffer an unexpected disadvantage. For this purpose or similar purposes, forgery of information codes should be prevented more reliably. Is strongly demanded.

JP 2007-293866 A Japanese Patent No. 3541731

  For example, Patent Documents 1 and 2 are provided as techniques for solving the problem of forgery as described above. The technique of Patent Document 1 is intended to prevent counterfeiting and unauthorized use of lottery tickets, etc., and special ink (transmits visible light and emits light of a specific wavelength so as to overlap on the QR code (registered trademark). A predetermined graphic pattern is formed by an ink that emits light of a predetermined wavelength when irradiated. If the lottery ticket is configured in this way, a general user cannot grasp that the special ink is applied on the QR code, and for example, the information code is counterfeited to be replaced with another information code. However, it can be discovered by irradiating light of a specific wavelength and confirming whether or not the special ink is applied.

  Further, in the technique of Patent Document 2, special ink (magnetic ink or ink that modulates a specific wavelength) is attached to an admission ticket or the like so as to overlap with a QR code (registered trademark) to form a predetermined graphic pattern. doing. The counterfeit determination device that reads this determines that the possibility of counterfeiting is high when the special ink is not applied to the predetermined position or when the occurrence of errors is concentrated at the predetermined position. In this way, even if counterfeiting is performed by replacing the legitimate information code with an illegal information code (information code without special ink), it is possible to check for the presence of special ink. Can be found. Moreover, even if complicated counterfeiting is performed such that paper with special ink is pasted on a predetermined area (position where special ink is to be applied) after being replaced with an illegal information code without special ink. , It is possible to detect the concentration of errors in the predetermined area and detect forgery.

  However, forgery of information codes may become more sophisticated in the future, and further ingenuity is required to prevent forgery. In particular, the information codes attached to various types of tickets that are currently offered have a general code structure, and the recorded data can be read freely, so it is essentially disclosed to third parties. Unnecessary data and data that should not be disclosed to a third party are easily read by a third party, which is undesirable in terms of security. In addition, when the forgery determination as in Patent Documents 1 and 2 does not function for some reason, there is a possibility that the data recorded in the information code is freely handled as a regular one. In order to prevent these problems, it is desirable to further enhance security.

  SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem. When an information code attached to a recording medium is forged, a reading apparatus and a reading system capable of finding the forgery with higher accuracy. The purpose is to provide.

In order to achieve the above object, the invention of claim 1 has a public area and a non-public area in which encrypted data encrypted based on an encryption key is recorded, and predetermined information is recorded in the public area. A reading apparatus capable of reading a recording medium to which a partially-disclosed code is attached and special ink is attached at a predetermined position, the imaging means capable of imaging the recording medium, and the encryption key A decryption key storage means capable of storing a decryption key corresponding to the information, a decryption means for decrypting at least the data in the public area when the partial private code is imaged by the imaging means, and a record in the public area Predetermined information detecting means for detecting the predetermined information, ink position detecting means for detecting a special ink forming position to which the special ink is applied on the recording medium, and ink position detecting Determining means for determining whether or not the special ink formation position detected by the step is a normal position, and the decoding means detects the predetermined information by the predetermined information detecting means, and the determining means When the special ink formation position is determined to be the regular position, the decryption result of the secret area is output on condition that the decryption key is stored in the decryption key storage means. Further, at least position information is recorded together with the predetermined information in the public area of the partially private code, and when the predetermined information is detected by the predetermined information detecting means, the determining means Based on the position information recorded in the open area, it is determined whether or not the special ink formation position is a normal position.

According to the first aspect of the present invention, when the information code attached to the recording medium is forged, the forgery can be found with higher accuracy, and the security function can be further enhanced. That is, the predetermined information recorded in the open area is detected by the predetermined information detecting means, the special ink formation position where the special ink is applied on the recording medium is determined to be the normal position, and the decryption key is stored in the storage means. Since the decryption result of the private area is output only when the information is stored, it is extremely difficult for a third party to read the information of the private area. For example, the data in the private area cannot be read unless the special ink is placed at the regular position, so that forgery itself is difficult, and even if the code itself is forged, the private area is not present unless there is a decryption key. since that can not be able to read the information, and thorough in terms of security.

Further, at least position information is recorded together with the predetermined information in the public area of the partially private code, and when the predetermined information is detected by the predetermined information detection means, the determination means records the position recorded in the public area. Based on the information, it is determined whether or not the special ink formation position is a normal position. According to this configuration, the special ink formation position can be freely changed on the recording medium. That is, since the authenticity of the recording medium can be determined if the position information is recorded in the public area so that the content matches the position to which the special ink is applied, the degree of freedom of layout in creating the recording medium (In particular, the degree of freedom of the code forming position) can be increased. In addition, the position for forming the special ink does not need to be fixed, and can be easily changed. Therefore, the security can be improved as compared with a configuration in which the special ink formation position cannot be changed.

According to the second aspect of the present invention, the location information and other secret data are recorded in the secret area of the partially secret code, and the decryption means detects the predetermined information by the predetermined information detection means. If the decryption key is stored in the decryption key storage means, the private area is decrypted to read the position information, and the judging means is based on the position information read from the private area by the decryption means. Determining whether the special ink formation position is a regular position, and the decoding means outputs other private data in the private area when the judgment means determines that the special ink formation position is the regular position To do. According to this configuration, the special ink formation position can be freely changed on the recording medium. That is, since the authenticity of the recording medium can be determined if the position information is recorded in the non-public area so that the content matches the position to which the special ink is applied, the layout can be freely set in creating the recording medium. The degree (in particular, the degree of freedom of the code forming position) can be increased. In addition, since the position for forming the special ink does not need to be fixed and can be easily changed, the security can be improved as compared with a configuration in which the special ink formation position cannot be changed. In particular, since the position information is recorded in the non-public area, the third party cannot acquire the position information based on the code contents, so that forgery itself becomes difficult. Furthermore, since it is extremely difficult to counterfeit such that the encrypted non-disclosure recording information corresponds to the position of the special ink and the non-disclosure recording content is changed, it is more advantageous for counterfeit prevention and counterfeit discrimination.

According to the invention of claim 3 , the recording medium is configured such that the special ink formation position and the partial secret code overlap a predetermined area, and the decoding unit is a part of the image captured by the imaging unit. Error occurrence position detection means for detecting an error occurrence position in an image of a private code, a first abnormal state in which a special ink formation position is not provided in a predetermined area in the private code, and an error occurrence position detection means An abnormality detecting means for detecting at least one of a second abnormal state in which the occurrence positions of errors detected by the first and second abnormal states are concentrated in a predetermined region, and at least one of the first abnormal state and the second abnormal state is detected by the abnormality detecting means. If any one of them is detected, at least one of processing for stopping output of the decryption result of the private area and processing for notifying an error is performed. According to this configuration, it is possible to more reliably find a forgery that replaces a genuine partially private code with an illegal information code (information code not attached with special ink). In addition, even if counterfeiting is performed such that paper with special ink is pasted to a predetermined area (position where special ink should be applied) after being replaced with an illegal information code without special ink attached, It is possible to detect forgery by reliably detecting errors concentrated in a predetermined area.

According to the invention of claim 4 , a host computer provided with predetermined information detecting means, decoding means, decoding key storage means, and judging means is provided outside the imaging means and ink position detecting means, and further, the imaging means Image data transmission means for transmitting the image data imaged at the host computer, and position data transmission means for transmitting the special ink formation position data detected by the ink position detection means to the host computer, In the host computer, the predetermined information detecting means detects the predetermined information recorded in the open area based on the data transmitted by the image data transmitting means, and the judging means is based on the data transmitted by the position data transmitting means. It is determined whether or not the special ink forming position is a regular position, and the decoding means is determined by the predetermined information detecting means. Te predetermined information is detected, if the special ink forming position is determined to normal position by the determination means, the decryption key to the decryption key storing means outputs the result of decoding geeklog condition that stored. According to this configuration, the imaging unit and the ink position detection unit can be separated from the configuration on the host computer side, and can be easily arranged at a position suitable for imaging and ink position detection. In addition, forgery can be reliably determined for the entire system.

According to the invention of claim 5, it is possible to realize a reading system having the same effect as that of claim 1.

FIG. 1 is an explanatory diagram schematically illustrating a reading system according to the first embodiment. FIG. 2 is a block diagram schematically showing the configuration of a reading apparatus that forms part of the reading system of FIG. FIG. 3 is an explanatory diagram schematically illustrating a lottery ticket used in the reading system of FIG. FIG. 4 is an explanatory diagram schematically illustrating a partially private code used in the reading system according to the first embodiment. 5A is an explanatory diagram illustrating the data configuration of the partially private code of FIG. 4, and FIG. 5B is an explanatory diagram illustrating the disclosed data recorded in the public area. (C) is explanatory drawing which illustrates the encryption data recorded on a non-public area | region. FIG. 6 is an explanatory diagram illustrating the data structure of the partially private code of FIG. FIG. 7 is an explanatory diagram conceptually illustrating the configuration in the memory of the reading apparatus according to the first embodiment. FIG. 8 is a flowchart illustrating the flow of reading processing performed by the reading apparatus according to the first embodiment. FIG. 9 is a flowchart illustrating the flow of a reading process performed by the reading apparatus according to the second embodiment. FIG. 10 is an explanatory diagram illustrating a data structure of a partially private code used in the reading system according to the second embodiment. FIG. 11 is a flowchart illustrating the flow of a reading process performed by the reading apparatus according to the third embodiment.

[First embodiment]
DESCRIPTION OF EXEMPLARY EMBODIMENTS A first embodiment that embodies a reading system according to the invention and a reading apparatus used therefor will be described below with reference to the drawings.
(Overall configuration of reading system)
First, the overall configuration of the reading system 1 will be described with reference to FIGS. FIG. 1 is an explanatory diagram schematically illustrating a reading system 1 according to the first embodiment. FIG. 2 is a block diagram schematically showing the configuration of a reading apparatus that forms part of the reading system of FIG. FIG. 3 is an explanatory diagram schematically illustrating a lottery ticket used in the reading system of FIG.

The reading device 30 shown in FIG. 1 is configured to read an information code printed on a lottery ticket 50 conveyed at a constant speed, and mainly includes an optical detection sensor 5, a camera 3, a host computer 2, and the like. The special ink detection unit 4 and the transport device 7 are provided. Also, the reading device 30 hosts image data transmission means for transmitting image data captured by the camera 3 to the host computer 2 and data detected by the special ink detection unit 4 (data of the special ink formation position, etc.). Position data transmission means for transmitting to the computer 2 is provided.
The reading device 30 may be configured as a single device in which the above-described elements are integrated, or may be configured with a plurality of devices.

  The conveyance device 7 is configured as a device that conveys the lottery ticket 50 in a predetermined direction at a constant speed. In the example of FIG. 1, a transfer roller 7 a that is rotated at a constant speed by a motor is included in the conveyance path of the lottery ticket 50. It is arranged at a plurality of positions along. The transport device 7 starts driving when receiving an instruction to start driving from a control circuit (not shown), and transports the lottery ticket 50 set at a predetermined position at a constant speed.

  The optical detection sensor 5 includes, for example, a light emitting element 5a and a light receiving element 5b that face each other. The light emitting element 5a is configured by a known element such as an LED, for example, and continuously emits light from a predetermined light emission start time (for example, when the driving of the transport device 7 is started by a control circuit not shown). Yes. In addition, the light receiving element 5b is opposed to the light emitting element 5a so that the light receiving surface faces the light emitting element 5a at a predetermined distance from the light emitting element 5a. Is generated and output to the host computer 2. The light emitting element 5a and the light receiving element 5b are arranged across the conveyance path of the lottery ticket 50, and when the lottery ticket 50 passes between the light emitting element 5a and the light receiving element 5b, the light from the light emitting element 5a is blocked. It is supposed to be. In this configuration, when there is no detected object (lottery ticket 50) between the light emitting element 5a and the light receiving element 5b, the light receiving element 5b receives the light from the light emitting element 5a and outputs a light reception signal, and the light emitting element 5a. When the detected object (lottery ticket 50) exists between the light receiving element 5b, the light from the light emitting element 5a does not reach the light receiving element 5b, and the light receiving signal is not output from the light receiving element 5b. Accordingly, the host computer 2 monitors the light reception signal from the light receiving element 5b output after the light emission of the light emitting element 5a is started, and detects the falling edge of the light reception signal, whereby the lottery ticket 50 is moved to the reference position (optical detection). The timing at which the position detected by the sensor 5 is reached can be grasped.

  Next, the camera 3 will be described. The camera 3 corresponds to an example of “imaging means” that images the lottery ticket 50 (recording medium), and includes, for example, a solid-state imaging device such as a CMOS image sensor or a CCD image sensor, a control circuit, a communication circuit, and the like. It is configured as a general-purpose camera and functions to capture information code C and generate image data. The camera 3 is configured to image the lottery ticket 50 at a predetermined timing when the lottery ticket 50 exists in the imaging area. When the lottery ticket 50 is imaged, data of the captured image is transmitted to the host computer 2. It is supposed to send.

  Next, the special ink detection unit 4 will be described. The special ink detection unit 4 includes a sensor that detects special ink applied to the lottery ticket 50, a control circuit, a communication circuit, and the like. For example, when magnetic ink is used as the special ink applied to the lottery ticket 50, the special ink detection unit 4 can be configured by a magnetic ink reader. In this case, a lottery that is configured to detect a change in magnetic flux by scanning with a sensor and a magnetic head of the special ink detection unit 4 (magnetic ink reading device) and is transported at a constant transport speed by the transport device 7 described above. With respect to the ticket 50, a change in magnetic flux is detected by a magnetic head whose position is fixed. When a change in magnetic flux is detected, the detection signal is output to the host computer 2. As shown in FIG. 3, the lottery ticket 50 has the longitudinal direction of the lottery ticket 50 as the movement direction, and the magnetic head is set at a predetermined position of the lottery ticket 50 according to the movement of the lottery ticket 50. It moves relatively along the inspection line Ln. The transport speed by the transport device 7 is constant, and is detected from the special ink detection unit 4 when the special ink detection unit 4 reaches the position (start position on the inspection line Ln in the special ink pattern In) P1. Since the signal is output, by measuring the time from when the optical detection sensor 5 detects the lottery ticket 50 until the special ink detection unit 4 outputs the detection signal, the front end P2 in the longitudinal direction is measured. To the position P1 can be grasped. Specifically, the optical detection sensor 5 draws the lottery ticket by the time T from when the optical detection sensor 5 detects the lottery ticket 50 until the special ink detection unit 4 outputs the detection signal and the conveyance speed V of the lottery ticket 50. The movement distance X1 of the position P1 from when the 50 is detected until the special ink detection unit 4 detects the special ink In (that is, until the position P1 reaches the position of the special ink detection unit 4) can be obtained. Since the movement distance X2 of the position P1 from the position where the optical detection sensor 5 detects the lottery ticket 50 until the position P2 reaches the special ink detection unit 4 can be stored as a known value, X1-X2 A distance Xa between the position P1 and the position P2 can be obtained, and this distance Xa can be a value indicating the position of the special ink In.

  In this example, the special ink detection unit 4 corresponds to an example of “ink position detection means” and functions to detect a special ink formation position to which special ink is applied in the lottery ticket 50 (recording medium). The transmission circuit of the special ink detection unit 4 corresponds to an example of “position data transmission unit”, and functions to transmit data of the special ink formation position detected by the ink position detection unit to the host computer 2.

  The “special ink formation position data” transmitted from the special ink detection unit 4 to the host computer 2 can be, for example, a signal (timing signal) indicating the timing at which the special ink detection unit 4 detects the position P1. . In this case, the host computer 2 can grasp the timing at which the optical detection sensor 5 detects the lottery ticket 50 and the timing at which the special ink detection unit 4 detects the position P1 of the special ink In. Based on this, it is possible to calculate the time T from when the optical detection sensor 5 detects the lottery ticket 50 until the special ink detection unit 4 detects the position P1 of the special ink In. The “special ink formation position data” transmitted from the special ink detection unit 4 to the host computer 2 is time data based on the timing at which the position P1 is detected (for example, when the optical detection sensor 5 detects the lottery ticket 50). , Time T data until the special ink detection unit 4 detects the position P1 of the special ink In). Alternatively, the distance Xa between the position P1 and the position P2 may be obtained from the time T, and the distance Xa may be transmitted to the host computer 2. In order to calculate the time T and the distance Xa by the special ink detection unit 4 in this way, the detection timing of the optical detection sensor 5 may be grasped by the special ink detection unit 4.

  Next, the host computer 2 will be described. FIG. 2 is a block diagram schematically showing the configuration of the reading device 30 according to the first embodiment. As shown in FIG. 2, the host computer 2 is configured as an information processing apparatus, and for example, a general-purpose personal computer is preferably used. The reading device 30 includes a control unit 31 including a CPU, a display unit 32 configured as a liquid crystal monitor, a storage unit 33 including a ROM, a RAM, an HDD, an operation unit 34 configured as a mouse, a keyboard, and the like, a communication A communication unit 35 or the like configured as an interface is provided, and is connected so that various information can be input from the camera 3, the special ink detection unit 4, and the optical detection sensor 5.

(Composition of lottery tickets)
Next, the lottery ticket 50 as a recording medium will be described.
FIG. 3 is a schematic diagram showing the lottery ticket 50 according to the first embodiment. As shown in FIG. 3, the lottery ticket 50 is configured in a longitudinal shape, and a part of the secret code C is printed in a predetermined area on one side thereof. In addition, a square special ink pattern In is formed of the above-described special ink so as to partially overlap the secret code C in the lottery ticket 50. In addition, a lottery number and other information are printed using characters in the area on the right side of the lottery ticket 50 (the area indicated by A in the figure). For example, data obtained by converting these pieces of character information into data are recorded in the two partially private codes C, and lottery number data is recorded in the private area of the partially private code C, for example. .

  Next, a partially private code will be described. FIG. 4 is an explanatory diagram schematically illustrating a partially private code C used in the reading system 1 according to the first embodiment. In FIG. 4, the specific cell configuration of the partially closed code C is omitted, but the configuration is the same as the known QR code (configuration in which light cells and dark cells are arranged in a matrix). Can do. As shown in FIG. 4, the partially private code C is encrypted with a public area Ca in which non-encrypted data (public data) that can be read without using an encryption key is recorded, and an encryption key. The private area Cb in which the encrypted data (private data) thus recorded is recorded and the error correction area in which the error correction code is recorded are provided. Furthermore, in the present embodiment, a cooperation identifier (predetermined information) described later is recorded in the public area Ca, and the lottery number information described above is recorded in the non-public area Cb.

  Next, the data structure will be described. 5A is an explanatory diagram illustrating the data configuration of the partially private code C in FIG. 4, and FIG. 5B is an explanatory diagram illustrating disclosed data recorded in the public area Ca. FIG. 5C is an explanatory diagram illustrating encrypted data recorded in the non-public area Cb. Some private areas are private areas (areas that can be read with the acquisition of the encryption key) Cb, and other areas are public areas (areas that can be read without using the encryption key) Ca. As a method for generating the code C and a specific configuration of the partially private code C to be generated, for example, the techniques disclosed in JP2009-9547A, JP2008-299422A, and the like can be suitably used. . FIG. 5A illustrates the data configuration of a partially private code C when the techniques of these publications are used, and among these, “disclosure code” includes each of the codes as shown in FIG. Disclosure data (each public data such as a unique ID and valid period data) is encoded in accordance with JIS basic specifications (JISX0510: 2004). The “secret code” is encoded according to JIS basic specifications (JISX0510: 2004) as shown in FIG. 5C (encrypted data obtained by encrypting each private data such as lottery number information). It is a thing.

  Note that the method for generating the partial private code C and the specific configuration of the partial private code C to be generated are not limited to this example, and the encrypted data is recorded in a partial area and is stored in another area. As long as it is a method capable of generating a two-dimensional code in which non-encrypted data is recorded, it may be generated by a method other than the method described in these publications.

  FIG. 6 is an explanatory diagram specifically illustrating the data structure of the partially private code C of FIG. As shown in FIG. 6, an identifier for detecting predetermined public data or special ink is recorded in the partially private code C as public area data, and further, the configuration follows the public area data. The identifier indicating the end of the data in the public area is recorded. Further, encrypted private data (such as lottery number information) is recorded in areas other than these. The public data portion includes information that can be freely read by the user and an indicator that indicates cooperation with the special ink. The indicator indicating the cooperation with the special ink is configured by, for example, numbers in a predetermined arrangement. Because of this configuration, the data in the public area (data up to the identifier at the end) can be decrypted without the decryption key. If there is no decryption key and decryption algorithm for decrypting the data, the decryption cannot be performed. It should be noted that the encryption of the secret data is performed, for example, by an information processing device (not shown) using an encryption key and an encryption algorithm corresponding to the decryption key and the decryption algorithm stored in the storage unit 33 of the reading device 30. Thus, the generation of a partly private code C is also performed by the information processing apparatus.

  FIG. 7 is an explanatory diagram conceptually illustrating the configuration in the storage unit 33 in the reading device 30 according to the first embodiment. In the present embodiment, when the reading device 30 decodes the data in the private area Cb in the partial private code C, the data is temporarily written in the non-access area in the storage unit 33 as shown in FIG. ing. In the example of FIG. 7, the storage unit 33 is provided with an access area that can be accessed by the user and a non-access area where access by the user is restricted. The area is an access area, and the part having an address number of 11h or later is an access area. FIG. 7 illustrates a case where lottery number information described later is recorded in the non-public area Cb, and decryption data (lottery number information, etc.) of the non-public area Cb is recorded in the non-access area. It has become.

  The “access area” in the present embodiment is an area that can be read from the outside by an external operation (for example, operation by the operation unit 34) for the reading device 30, and the “non-access area” is an external area for the reading device 30. It may be an area that cannot be accessed by an operation (for example, operation by the operation unit 34), or an area that can be accessed from the outside on the condition of a special command or special password (that is, know a special command or special password) May be an area that can be accessed only by a person.

(Code reading process)
Next, the code reading process will be described.
FIG. 8 is a flowchart illustrating the flow of a reading process performed by the reading device 30 according to the first embodiment. The code reading process shown in FIG. 8 is performed, for example, when a predetermined start condition is satisfied (for example, a lottery ticket 50 is inserted into a predetermined insertion slot (not shown), and insertion of the lottery ticket 50 is detected by a sensor not shown). And executed by the control unit 31 of the reading device 30. In this reading process, first, a process of imaging a two-dimensional code is performed (S1). Specifically, with the start of the reading process of FIG. 8, the lottery ticket 50 is sent out at a predetermined speed by the transport device 7, and the partially secret code C printed on the lottery ticket 50 is predetermined. This partially-disclosed code C is imaged by the camera 3 at the timing at which it is arranged at the imaging position (for example, the timing when a certain time has elapsed since it was detected by the optical detection sensor 5).

  The image data of the partially private code C imaged in this way is transmitted from the camera 3 to the host computer 2 and stored in the storage unit 33. In the present embodiment, the control circuit and the communication circuit provided in the camera 3 correspond to an example of “image data transmission unit”, and image data (specifically, image data captured by the camera 3 (imaging unit)). The image data generated by the solid-state imaging device provided in the camera 3) functions to be transmitted to the host computer 2.

In the process of S1, the image data transmitted to the host computer 2 in this way is analyzed, and the data in the public area of the partially private code C included in the image data (that is, unencrypted data) is publicly known. Decipher by the method. Specifically, for example, data recorded in a part of the private code C is read from the beginning to the end terminal, and the data in the area (public area) in between is decoded. In the partially private code C used in the reading system 1 according to the present invention, predetermined information (cooperation identifier (cooperation indicator)) and other disclosure codes are recorded in the public area. If the linkage indicator)) can be confirmed, it is determined that the code is a code to be read. Therefore, when such predetermined information (cooperation identifier (cooperation indicator)) is confirmed, the process proceeds to Yes in S2 and the specific processing after S3 is performed. On the other hand, if such predetermined information is not confirmed, it can be said that it is not a code to be read. In this case, the process proceeds to No in S2, and only the public area is decoded and output (S8). Exit.
In this example, the control unit 31 corresponds to an example of “predetermined information detection means” and functions to detect predetermined information (cooperation identifier (cooperation indicator)) stored in the public area Ca.

  After proceeding to Yes in S2, processing for determining whether or not special ink is detected within a predetermined time is performed (S3). As described above, the transport speed of the transport device 7 is constant, and when the special ink detection unit 4 reaches the position (start position on the inspection line Ln in the special ink pattern In) P1, this special ink detection unit. Since the detection signal is output from 4, the time from when the optical detection sensor 5 detects the lottery ticket 50 until the special ink detection unit 4 outputs the detection signal is measured in the longitudinal direction. The distance from the front end P2 to the position P1 can be grasped. When the special ink is in the normal position, the time from when the optical detection sensor 5 detects the lottery ticket 50 until the special ink detection unit 4 outputs the detection signal should be a predetermined value T1. Therefore, in the process of S3, whether or not the time T from when the optical detection sensor 5 detects the lottery ticket 50 until the special ink detection unit 4 outputs the detection signal is within a normal range close to the predetermined value T1. Judging. Specifically, a time range Ta to Tb (Ta ≦ T1 ≦ Tb) including the predetermined value T1 within the range is determined in advance, and in the process of S3, the optical detection sensor 5 detects the lottery ticket 50. It is determined whether or not the time T from when the special ink detection unit 4 outputs the detection signal to within the range of Ta to Tb.

In addition, the storage unit 33 records a regular value as a reference for the distance Xa as information on the “ink position”. In S3, the optical detection sensor 5 detects the lottery ticket 50 and then the special ink detection unit. Xa is obtained based on the time T until 4 outputs the detection signal, and it is also determined whether or not this Xa matches the “ink position” (normal value) recorded in the storage unit 33. When the time T is within the range of Ta to Tb (within the normal range) and the special ink formation position (position P1) is the normal position (that is, Xa matches the normal value recorded in the storage unit 33). In the case), the process proceeds to Yes in S3, and otherwise proceeds to No in S3. If the special ink is not detected, the time T is out of the range of Ta to Tb, or if the distance Xa does not match the normal value, only the reading process of the data in the public area Ca is performed (S8). Then, the reading process is terminated.
In this example, the control unit 31 corresponds to an example of “determination unit”, and functions to determine whether or not the special ink formation position (position P1) detected by the ink position detection unit is a normal position.

  When the process proceeds to Yes in S3, the private data Cb is read (S4). As described above, the encrypted data encrypted based on the encryption key is recorded in the private area Cb of the partially private code C. In S4, the decryption key corresponding to the encryption key is stored in the storage unit. In addition to reading from 33, the decrypted key is used to decrypt the encrypted data recorded in the private area Cb. Specifically, after the data code stored in the private area Cb (the secret code obtained by encoding the encrypted data) is decoded by a publicly known method, the decoded data is converted into the read decryption key (the private area). The Cb encryption data is decrypted using a decryption key). Note that there are various specific decryption methods for the non-public area Cb. For example, the same method as disclosed in JP2009-9547A and JP2008-299422A may be used, or other known methods may be used. Good.

In the present embodiment, the storage unit 33 corresponds to an example of a “decryption key storage unit” and can store a decryption key corresponding to the encryption key of the private area Cb.
Further, the control unit 31 corresponds to an example of “decoding means”, and functions to decode data in the public area Ca when the private code C is partially imaged by the camera 3 (imaging means). More specifically, when the predetermined information is detected by the predetermined information detecting means and the special ink forming position is determined to be the normal position by the determining means, the decoding key storage means stores the decoding key. It functions to output the decryption result of the private area Cb as a condition.

  In the subsequent process of S5, the non-public data (for example, lottery number data) decoded and read in the process of S4 is written in the non-access area Cb in the storage unit 33. Thereafter, the decrypted private data is output to an external device (for example, an external information processing device connected to the host computer 2) (S6). Then, after the process of S6, the secret data written in the non-access area Cb in the storage unit 33 is erased. In this example, since non-public data (lottery number data, etc.) is handled in the non-access area of the storage unit 33, a third party accesses this non-public data while recording the non-public data in the storage unit 33. Since the non-public data recorded in the storage unit 33 is erased after the communication processing in S6 is finished, a third party takes out the non-public data by some method after using the non-public data. Unauthorized use can be avoided.

(Main effects of the first embodiment)
According to the reading device 30 according to the first embodiment, when the information code C attached to the lottery ticket 50 (recording medium) is forged, the forgery can be found with higher accuracy, and the security function Can be further strengthened. That is, the predetermined information (cooperation identifier (cooperation indicator)) recorded in the open area Ca is detected by the predetermined information detection means, and the special ink formation position to which the special ink is applied in the lottery ticket 50 (recording medium) is the normal position. Since the decryption result of the private area Cb is output only when it is determined that there is a decryption key stored in the storage unit 33 (storage means), it is extremely possible for a third party to read the information in the private area Cb. It becomes difficult. For example, since the data in the non-public area Cb cannot be read unless the special ink is arranged at the regular position, it is difficult to forge itself, and even if the code itself is forged, it is private unless the decryption key exists. Since the information in the area Cb cannot be read, the security is ensured.

In the above configuration, a host computer provided with predetermined information detection means, decoding means, decoding key storage means, and determination means outside the camera 3 (imaging means) and special ink detection unit 4 (ink position detection means). 2, and further, an image data transmission unit that transmits image data captured by the camera 3 (imaging unit) to the host computer, and a special ink formation position detected by the special ink detection unit 4 (ink position detection unit). Position data transmitting means for transmitting the data to the host computer 2 is provided. Then, in the host computer 2, the predetermined information detection means detects the predetermined information (cooperation identifier (cooperation indicator)) recorded in the public area Ca based on the data transmitted by the image data transmission means. Based on the data transmitted by the position data transmission means, it is determined whether or not the special ink formation position is a normal position. The decoding means detects the predetermined information by the predetermined information detection means, and the determination means detects the special ink formation position. Is determined to be a normal position, the decryption result of the private area is output on the condition that the decryption key is stored in the decryption key storage means.
According to this configuration, the camera 3 (imaging unit) and the special ink detection unit 4 (ink position detection unit) can be separated from the configuration on the host computer 2 side, and can be easily arranged at a position suitable for imaging and ink position detection. Become. In addition, forgery can be reliably determined for the entire system.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. The second embodiment is different from the first embodiment only in the contents of the reading process, and is otherwise the same as the first embodiment. For example, since the hardware configuration is the same as that of the first embodiment, refer to FIG. 1 and FIG. The configuration of the partially private code C is different from the first embodiment only in specific data contents, and the other configuration, generation method, and decryption method are the same as those in the first embodiment. Therefore, only the code reading process will be described with reference to FIG.

(Code reading process)
A code reading process according to the second embodiment of the present invention will be described. FIG. 9 is a flowchart illustrating the flow of reading processing performed by the reading device 30 according to the second embodiment. FIG. 10 is an explanatory diagram illustrating the data structure of the partially private code C used in the reading system 1 according to the second embodiment. Also in the present embodiment, the reading process is started when a predetermined operation is performed in the reading device 30, and first, a process of capturing an image of the partially private code C is performed (S21). The process of S21 is the same as the process of S1 in FIG. Subsequently, the same processing (S22) as S2 of FIG. 8 is performed. When the process proceeds to Yes in S22, as in S3, the time T from when the optical detection sensor 5 detects the lottery ticket 50 until the special ink detection unit 4 outputs a detection signal is measured. It is determined whether T is within the above-described normal range Ta to Tb. If it has fallen (that is, if special ink has been detected within a predetermined time), the process proceeds to Yes in S23, and the determination process in S24 is performed.

In the process of S24, it is determined whether or not the special ink formation position P1 (FIG. 3) attached to the lottery ticket 50 is a regular position (S24). As shown in FIG. 10, a numerical value indicating position information (special ink formation position) is input to the public area Ca of the partially closed code C together with predetermined information (a cooperation indicator indicating “special ink detection”). . Then, when the predetermined information (cooperation indicator) is detected by the same predetermined information detecting means as in the first embodiment, whether the special ink formation position P1 is the normal position based on the position information recorded in the public area Ca. Judgment is made. Specifically, for example, a regular value serving as a reference for the distance Xa is recorded as information on “ink position”. In S24, the special ink detection unit 4 detects the lottery ticket 50 after the optical detection sensor 5 detects the lottery ticket 50. Xa is obtained based on the time T until the detection signal is output, and it is determined whether or not this Xa matches the “ink position” (normal value) recorded in the open area Ca. In the process of S24, when the calculated distance Xa matches the “ink position” (normal value) recorded in the public area Ca, that is, when it is determined that the special ink formation position P1 is the normal position. ,
In S24, the process proceeds to Yes, and the processes after S25 are performed. The processing from S25 to S28 is the same as the processing from S4 to S7 in FIG. On the other hand, if the calculated distance Xa does not coincide with the “ink position” (normal value) recorded in the open area Ca, that is, if it is determined that the special ink formation position P1 is not the normal position, in S24. The process proceeds to No, data reading processing in the public area Ca is performed (S29), and the code reading processing is terminated.

(Main effects of the second embodiment)
According to the reading device 30 according to the second embodiment, when the information code C attached to the recording medium is forged, the forgery can be found with higher accuracy, and the security function is further enhanced. be able to. That is, only when the predetermined information (indicator indicating cooperation with the special ink) is detected by the predetermined information detection unit and the special ink formation position where the special ink is applied on the recording medium is determined to be the normal position, the decoding key is used. Since the decryption is performed, the authenticity of the authenticity determination can be improved. For example, a forgery is performed in which a regular information code C is replaced with an information code C to which an illegal special ink is not applied, and then a complicated paper in which a paper with a special ink is pasted on a predetermined area is used. Even if counterfeiting is performed, the information code C is not read out. Further, since the encrypted data is recorded in the non-public area Cb, it cannot be freely read out like the data in the public area Ca just by determining that the special ink formation position is the regular position. More desirable. Therefore, forgery of the information code C by a third party itself becomes difficult, and further information confidentiality can be enhanced in confidentiality management.

  Moreover, according to the said structure, it becomes possible to change the design of the special ink formation position P1 freely in the lottery ticket 50 (recording medium). That is, since the authenticity of the recording medium can be determined if the position information is recorded in the public area Ca so that the content matches the position P1 to which the special ink has been applied, the layout for creating the recording medium can be determined. The degree of freedom (particularly the degree of freedom of the code formation position) can be increased. In addition, the position for forming the special ink does not need to be fixed, and can be easily changed. Therefore, the security can be improved as compared with a configuration in which the special ink formation position cannot be changed.

[Third embodiment]
Next, a third embodiment of the present invention will be described. The third embodiment is different from the first embodiment only in the contents of the reading process (that is, only the process shown in FIG. 8 is changed to the process shown in FIG. 11), and is otherwise the same as the first embodiment. For example, since the hardware configuration is the same as that of the first embodiment, refer to FIGS. 1 and 2 as appropriate. The configuration of the partially private code C is different from the first embodiment only in specific data contents, and the other configuration, generation method, and decryption method are the same as those in the first embodiment. Therefore, only the code reading process will be described with reference to FIG.

(Code reading process)
A code reading process according to the third embodiment of the present invention will be described. FIG. 11 is a flowchart illustrating the flow of a reading process performed by the reading device 30 according to the third embodiment. Also in the present embodiment, the reading process is started when a predetermined operation is performed in the reading device 30. First, similarly to S1 in FIG. 8, a process for imaging a partially-disclosed code C is performed (S31). Subsequently, a determination process (S32) similar to S2 of FIG. 8 or S22 of FIG. 9 is performed. When the process proceeds to Yes in S32, the same determination process (S33, S34) as S23 and S24 in FIG. 9 is performed. And when progressing to Yes in S34, it transfers to the process of S35.

  In the process of S35, it is determined whether or not error correction is concentrated at a specific position in the information code C (S35). In the present embodiment, in the lottery ticket 50 (recording medium), the position where the special ink In is applied (special ink formation position) and the part of the secret code C overlap with a predetermined area (for example, the specific areas AR1 and AR2). The positions of the specific areas AR1 and AR2 to which the special ink In is added in the information code C are determined in advance, and the position information of the specific areas AR1 and AR2 is stored in the storage unit 33. In the process of S35, the entire information code C is decoded and at the time of decoding, error correction is performed using a known error correction method, and the position where the error has occurred in the information code C is detected. Yes. When the information code C is decrypted in S35, the private area Cb is also provisionally decrypted using the decryption key stored in the storage unit 33. Then, if errors of a predetermined ratio (for example, 50%) or more are detected in each of the specific areas AR1 and AR2, it is assumed that “error correction is concentrated at a specific position in the code”. Proceed to Yes in S35. The subsequent processing (S36 to S39) when proceeding to Yes in S35 is the same as S4 to S7 in FIG. Moreover, the process of S40 is the same as that of S8 of FIG.

  In the present embodiment, the control unit 31 capable of decoding the information code C corresponds to an example of “decoding means”. The control unit 31 corresponds to an example of an “error occurrence position detection unit” and functions to detect an error occurrence position in an image of the partially private code C imaged by the camera 3 (imaging unit). . The control unit 31 that can perform the process of S35 corresponds to an example of an “abnormality detection unit”, and a first abnormal state in which a special ink formation position is not provided in a predetermined area in a part of the private code C (that is, , An abnormal state in which the time T is outside the range of the time range Ta to Tb), and the second abnormality in which the error occurrence positions detected by the error occurrence position detection means are concentrated in a predetermined area (specific area AR1 or AR2). Works to detect the condition. When at least one of the first abnormal state and the second abnormal state is detected by the abnormality detecting means (that is, when proceeding to No in S33 or proceeding to Yes in S35), in S40, You may make it perform the process which alert | reports an error.

(Main effects of the third embodiment)
The lottery ticket 5 (recording medium) used in the third embodiment is configured such that the special ink formation position and a part of the secret code overlap a predetermined area, and the decoding means is one imaged by the imaging means. An error occurrence position detecting means for detecting an error occurrence position in the image of the partial secret code C, a first abnormal state in which a special ink forming position is not provided in a predetermined area in the partially secret code C, and an error occurrence And an abnormality detecting means for detecting at least one of a second abnormal state in which the error occurrence positions detected by the position detecting means are concentrated in a predetermined area. When at least one of the first abnormal state and the second abnormal state is detected by the abnormality detection means, at least one of processing to stop outputting the decryption result of the private area and processing to notify an error is performed. . According to this configuration, it is possible to more reliably find a forgery that replaces a genuine partially private code with an illegal information code (information code not attached with special ink). In addition, even if counterfeiting is performed such that paper with special ink is pasted to a predetermined area (position where special ink should be applied) after being replaced with an illegal information code without special ink attached, It is possible to detect forgery by reliably detecting errors concentrated in a predetermined area.

[Other Embodiments]
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.

  In the above embodiment, the magnetic ink is used as the “special ink”, but a special ink other than the magnetic ink may be used. For example, an ink that is different from the ink of the information code C printed on the recording medium 50 and that modulates and reflects light of a predetermined wavelength may be used. In this case, the special ink detection unit 4 may be configured to irradiate light having a predetermined wavelength and to detect reflected light modulated by the special ink.

In the second embodiment, an example in which position information (information of “ink position” indicating a normal value of the distance Xa) is partially recorded in the public area Ca of the private code C has been described. It may be recorded in an encrypted state together with other private data in the private area Cb of the partial private code C.
In this case, in the process of FIG. 9, the process of S23 may be omitted and S24 and S25 may be changed, and when it is determined Yes in S22, the same process as S25, that is, the storage unit 33 (decryption key storage) Means) on the condition that the decryption key (the decryption key corresponding to the encryption key of the private area Cb) is stored, and the private area Cb is decrypted to obtain the positional information (a normal value serving as a reference for the distance Xa). After that, based on the position information, the same processing as S24, that is, whether or not the special ink formation position P1 (FIG. 3) attached to the lottery ticket 50 is a regular position. What is necessary is just to perform the process to judge. Then, when the special ink formation position P1 (FIG. 3) is determined to be the normal position, other secret data may be output.
In this case, the control unit 31 corresponds to an example of “decoding unit”, and when the predetermined information is detected by the predetermined information detection unit (that is, in the case of Yes in S22), the storage unit 33 (decoding key storage unit) It functions to decrypt the private area Cb and read the position information on the condition that the decryption key is stored.
The control unit 31 corresponds to an example of “determination unit”, and determines whether or not the special ink formation position P1 is a normal position based on the position information read by the decoding unit from the non-public area Cb. To work.
The control unit 31 corresponding to the “decoding unit” functions to output other non-public data of the non-public area Cb when the determination unit determines that the special ink formation position P1 is the normal position. .
According to such a configuration, the special ink formation position can be freely changed in the lottery ticket 50 (recording medium). That is, since the authenticity of the lottery ticket 50 (recording medium) can be determined if the position information is recorded in the non-public area Cb so that the content matches the position to which the special ink is applied, the recording medium is created. The degree of freedom in layout (especially the degree of freedom in code formation position) can be increased. In addition, since the position for forming the special ink does not need to be fixed and can be easily changed, the security can be improved as compared with a configuration in which the special ink formation position cannot be changed. In particular, since the position information is recorded in the non-public area Cb, a third party cannot acquire the position information based on the code contents, and thus forgery itself becomes difficult. Furthermore, since it is extremely difficult to counterfeit such that the encrypted non-disclosure recording information corresponds to the position of the special ink and the non-disclosure recording content is changed, it is more advantageous for counterfeit prevention and counterfeit discrimination.

DESCRIPTION OF SYMBOLS 1 ... Reading system 2 ... Host computer 3 ... Camera (imaging means)
4. Special ink detection unit (ink position detection means)
5 ... Optical detection sensor 30 ... Reading device 31 ... Control unit (decoding means, predetermined information detection means, judgment means)
32 ... Display unit 33 ... Storage unit (decryption key storage means)
34 ... operation part 35 ... communication part 50 ... lottery ticket (recording medium)
C ... Partially private code (information code)
Ca: Public area Cb: Private area

Claims (6)

A public area and a private area in which encrypted data encrypted based on the encryption key is recorded, and a partial private code in which predetermined information is recorded in the public area, and a special area A reading device capable of reading a recording medium in which ink is applied at a predetermined position,
Imaging means capable of imaging the recording medium;
Decryption key storage means capable of storing a decryption key corresponding to the encryption key;
A decoding means for decoding at least the data in the public area when the partially private code is imaged by the imaging means;
Predetermined information detecting means for detecting the predetermined information recorded in the public area;
Ink position detection means for detecting a special ink formation position to which the special ink is applied in the recording medium;
Determination means for determining whether or not the special ink formation position detected by the ink position detection means is a normal position;
With
The decryption means stores the decryption key in the decryption key storage means when the predetermined information is detected by the predetermined information detection means and the special ink formation position is determined to be the normal position by the determination means. The decryption result of the private area is output on condition that
In the public area of the partially private code, at least position information is recorded together with the predetermined information,
The determination means determines whether the special ink formation position is the regular position based on the position information recorded in the open area when the predetermined information is detected by the predetermined information detection means. A reading apparatus characterized by determining . A public area and a private area in which encrypted data encrypted based on the encryption key is recorded, and a partial private code in which predetermined information is recorded in the public area, and a special area A reading device capable of reading a recording medium in which ink is applied at a predetermined position,
Imaging means capable of imaging the recording medium;
Decryption key storage means capable of storing a decryption key corresponding to the encryption key;
A decoding means for decoding at least the data in the public area when the partially private code is imaged by the imaging means;
Predetermined information detecting means for detecting the predetermined information recorded in the public area;
Ink position detection means for detecting a special ink formation position to which the special ink is applied in the recording medium;
Determination means for determining whether or not the special ink formation position detected by the ink position detection means is a normal position;
With
The decryption means stores the decryption key in the decryption key storage means when the predetermined information is detected by the predetermined information detection means and the special ink formation position is determined to be the normal position by the determination means. The decryption result of the private area is output on condition that
Location information and other private data are recorded in the private area of the partially private code,
When the predetermined information is detected by the predetermined information detecting unit, the decoding unit decodes the non-public area on the condition that the decoding key is stored in the decoding key storage unit, and the position information Read
The determination unit determines whether the special ink formation position is the regular position based on the position information read from the non-public area by the decoding unit;
The reading device, wherein the decoding means outputs the other private data in the private area when the judgment means judges that the special ink formation position is the regular position . The recording medium is configured such that the special ink formation position and the partially private code overlap a predetermined area,
The decoding means is
An error occurrence position detecting means for detecting an error occurrence position in the image of the partially private code imaged by the imaging means;
The first abnormal state in which the special ink formation position is not provided in the predetermined area in the partially hidden code, and the error occurrence positions detected by the error occurrence position detecting means are concentrated in the predetermined area. An abnormality detection means for detecting at least one of the second abnormal states;
With
And at least one of a process for stopping output of a decryption result of the non-public area and a process for notifying an error when at least one of the first abnormal state and the second abnormal state is detected by the abnormality detection means. reading device according to claim 1 or claim 2, characterized in that either. A host computer provided with the predetermined information detection means, the decryption means, the decryption key storage means, and the determination means is provided outside the imaging means and the ink position detection means,
And image data transmission means for transmitting image data captured by the imaging means to the host computer;
Position data transmission means for transmitting data of the special ink formation position detected by the ink position detection means to the host computer;
Is provided,
In the host computer, the predetermined information detecting means detects the predetermined information recorded in the public area based on data transmitted by the image data transmitting means, and the judging means is determined by the position data transmitting means. the special ink forming position is determined whether or not the normal position on the basis of the transmitted data, said decoding means, the said predetermined information by a predetermined information detection means is detected, the special ink by the determining means The decryption result of the non-public area is output on the condition that the decryption key is stored in the decryption key storage means when the formation position is determined to be the regular position. The reading device according to claim 3 . A reading system comprising a recording medium to which an information code is attached and a reading device that reads the recording medium,
The recording medium has a public area and a private area in which encrypted data encrypted based on an encryption key is recorded, and a partially private code in which predetermined information is recorded in the public area Is attached as the information code, and special ink is attached at a predetermined position,
The reader is
Imaging means capable of imaging the recording medium;
Decryption key storage means capable of storing a decryption key corresponding to the encryption key;
A decoding means for decoding at least the data in the public area when the partially private code is imaged by the imaging means;
Predetermined information detecting means for detecting the predetermined information recorded in the public area;
Ink position detection means for detecting a special ink formation position to which the special ink is applied in the recording medium;
Determination means for determining whether or not the special ink formation position detected by the ink position detection means is a normal position;
With
The decryption means stores the decryption key in the decryption key storage means when the predetermined information is detected by the predetermined information detection means and the special ink formation position is determined to be the normal position by the determination means. The decryption result of the private area is output on condition that
In the public area of the partially private code, at least position information is recorded together with the predetermined information,
The determination means determines whether the special ink formation position is the regular position based on the position information recorded in the open area when the predetermined information is detected by the predetermined information detection means. A reading system for determining . A reading system comprising a recording medium to which an information code is attached and a reading device that reads the recording medium,
The recording medium has a public area and a private area in which encrypted data encrypted based on an encryption key is recorded, and a partially private code in which predetermined information is recorded in the public area Is attached as the information code, and special ink is attached at a predetermined position,
The reader is
Imaging means capable of imaging the recording medium;
Decryption key storage means capable of storing a decryption key corresponding to the encryption key;
A decoding means for decoding at least the data in the public area when the partially private code is imaged by the imaging means;
Predetermined information detecting means for detecting the predetermined information recorded in the public area;
Ink position detection means for detecting a special ink formation position to which the special ink is applied in the recording medium;
Determination means for determining whether or not the special ink formation position detected by the ink position detection means is a normal position;
With
The decryption means stores the decryption key in the decryption key storage means when the predetermined information is detected by the predetermined information detection means and the special ink formation position is determined to be the normal position by the determination means. The decryption result of the private area is output on condition that
Location information and other private data are recorded in the private area of the partially private code,
When the predetermined information is detected by the predetermined information detecting unit, the decoding unit decodes the non-public area on the condition that the decoding key is stored in the decoding key storage unit, and the position information Read
The determination unit determines whether the special ink formation position is the regular position based on the position information read from the non-public area by the decoding unit;
The reading system, wherein when the determination unit determines that the special ink formation position is the regular position, the decoding unit outputs the other non-public data in the non-public area .

Images