JP7139780B2 - Automatic ticket gate, code validity determination system, code validity determination method, and program - Google Patents

Description

The present invention relates to an automatic ticket gate, a code validity determination system, a code validity determination method, and a program capable of determining the validity of a code acquired from a display screen of a terminal device.

Conventionally, there has been proposed an automatic ticket gate that reads a code such as a QR code (registered trademark) displayed on the screen of a terminal device and processes the read code as a pass such as a passenger ticket (for example, Patent Document 1). . Passing ticket information that can be read by the reading unit of the automatic ticket gate is recorded in the code. Such automatic ticket gates are provided at railway ticket gates, airport boarding gates, facility entrances, and the like.

For example, automatic ticket gates installed at railway ticket gates are configured to acquire ticket information (passing ticket information) by optically reading a code placed on the reading surface of the reading unit, so magnetic tickets are used. A ticket conveying mechanism required for automatic ticket gates to be processed is no longer required. For this reason, an automatic ticket gate that performs ticket gate processing based on a read code can reduce the size and cost of the automatic ticket gate body as compared with an automatic ticket gate that processes magnetic tickets.

JP 2015-176313 A

In general, a code such as a QR code electronically displayed on the screen of a terminal device is likely to be duplicated. Therefore, a malicious user or a third party can easily forge the QR code as a ticket by duplicating the QR code displayed on the terminal device owned by the user. In addition, conventional automatic ticket gates cannot write information such as entry records and exit records into codes such as QR codes. Therefore, it is possible that used code may be used multiple times. In order to prevent such unauthorized use, for example, a verification system that performs a process of verifying the code read by the automatic ticket gate with the entry/exit record information in the server device and determines whether or not the code is valid. need to build. However, such a collation system requires storage and management of user IDs and a huge amount of codes, and also requires time for collation processing.

SUMMARY OF THE INVENTION An object of the present invention is to prevent unauthorized use of a code displayed on a display screen of a terminal device as a pass ticket, and an automatic ticket gate capable of realizing the validity of the code to be used with a simple configuration. , a code validity determination system, a code validity determination method, and a program.

An automatic ticket gate according to one aspect of the present invention includes a code acquisition section, a change information detection section, and a validity determination section. The code acquisition unit acquires a predetermined code from the display screen of the terminal device. The change information detection unit detects a change in change information that changes over time included in the display screen. The validity determination section determines that the code read by the code reading section is valid on condition that the change information detection section detects a change in the change information. Here, the code is a one-dimensional code such as a bar code, or a two-dimensional code such as a QR code, in which information on a ticket such as a passenger ticket is recorded.

Since the present invention is configured in this manner, the automatic ticket gate can determine the acquired code as a valid code when the change information detection unit detects a change in the change information, If no change in the change information is detected, the acquired code can be determined as an invalid code. As a result, even if a duplicated code obtained by duplicating a code such as a QR code is used in an automatic ticket gate, the duplicated code is determined to be invalid, thereby preventing unauthorized use of the duplicated code in the automatic ticket gate.

The change information is, for example, a partial code assigned to a part of the code. In this case, the change information detection section detects a change in the partial code.

Thereby, the change information detecting section can detect the temporal change of the partial code by comparing the read results before and after the change of the partial code.

The change information is displayed, for example, in an area other than the code display area on the display screen. In this case, the change information detection section detects a change in the change information in the other area. The change information is, for example, an image whose form, display position, or color changes over time.

Accordingly, the change information detection unit can detect a change over time in the other area by comparing the read results (read images) before and after the change in the other area.

Note that the change information may be time information indicating the current time. That is, it is preferable that the ever-changing time information is incorporated in the partial code, which is a part of the code. Alternatively, the time information may be displayed in the other area.

The change information detection unit detects a change in the change information by continuously reading the display screen and comparing a plurality of read data.

This makes it possible to reliably detect changes in the change information on the display screen.

Further, the automatic ticket gate of the present invention further includes a passage control section that controls passage of the user based on the determination result of the validity determination section. The passage control unit permits the passage of the user when the validity determination unit determines that the passage is valid. Further, when the code obtained by the code obtaining unit is determined to be invalid by the validity determining unit because the change information detecting unit does not detect a change in the change information, the traffic control unit Prohibit the passage of users.

As a result, it is possible to reliably stop the passage of a user who uses an illegal code at the automatic ticket gate.

A code validity determination system according to another embodiment of the present invention includes a change information display processing unit, a code acquisition unit, a change information detection unit, and a validity determination unit. The change information display processing unit displays change information that changes over time together with a predetermined code on the display screen of the terminal device. The code acquisition unit acquires the code from the display screen of the terminal device. The change information detection unit detects a change in the change information included in the display screen. The validity determination unit determines that the code acquired by the code acquisition unit is valid on condition that a change in the change information is detected by the change information detection unit.

A code validity determination method according to another aspect of the present invention includes a code acquisition step, a change information detection step, and a validity determination step. The code obtaining step obtains a predetermined code from the display screen of the terminal device. The change information detection step detects changes in change information that changes over time included in the display screen. The validity determination step determines that the code acquired by the code acquisition step is valid on condition that a change in the change information is detected by the change information detection step.

Further, the present invention can also be regarded as a program for causing a computer to execute each step of the code validity determination method, or a computer-readable recording medium in which such a program is non-temporarily recorded.

According to the present invention, in order to prevent unauthorized use of the code displayed on the display screen of the terminal device as a pass, it is possible to realize the validity of the code to be used with a simple configuration.

FIG. 1 is a diagram showing a network configuration of a station service system including automatic ticket gates according to an embodiment of the present invention. FIG. 2 is a block diagram showing the configuration of an automatic ticket gate according to an embodiment of the present invention. FIG. 3 is a perspective view showing an example of an automatic ticket gate according to an embodiment of the present invention. FIG. 4 is a block diagram showing the configuration of a user terminal that constitutes the code validity system according to the embodiment of the present invention. FIG. 5 is a diagram showing an example of display information displayed on the display screen of the user terminal. FIG. 6 is a flow chart showing an example of code validity determination processing executed by the automatic ticket gate according to the embodiment of the present invention. FIG. 7 is a diagram showing a first modified example of display information displayed on the display screen of the user terminal. FIG. 8 is a diagram showing a second modified example of display information displayed on the display screen of the user terminal.

Hereinafter, embodiments of the present invention will be described with reference to the drawings as appropriate. It should be noted that the embodiment described below is merely an example that embodies the present invention, and does not limit the technical scope of the present invention.

[Station service system 100]
FIG. 1 is a network diagram showing a station service system 100 including an automatic ticket gate 1 according to an embodiment of the present invention. As shown in FIG. 1, the station service system 100 includes an automatic ticket gate 1, a station server 2, a center device 3, and a user terminal 4 (an example of the terminal device of the present invention). Although one station 8 is shown in FIG. 1 , the station service system 100 may be configured to include a plurality of stations 8 . Station service equipment such as a plurality of automatic ticket gates 1, a station server 2, a ticket vending machine (not shown), a fare adjustment machine (not shown), and a station staff terminal (not shown) used by station staff are installed at the station 8. ing. These station service devices are communicably connected to the station server 2 via a network N1 such as a LAN. Also, the station server 2 of the station 8 is communicably connected to the center device 3, which is a server device managed by a railway operator (railway company), via a network N2 such as a dedicated line or a public line.

In this embodiment, in the station service system 100 configured as described above, the code according to the embodiment of the present invention is operated by the automatic ticket gate 1 installed in the station 8 and the user terminal 4 carried by the user. A validity determination system 9 is configured. That is, the code validity determination system 9 is composed of the automatic ticket gate 1 and the user terminal 4 .

The automatic ticket gate 1 is installed at the ticket gate of the station 8. As shown in FIG. 3, the automatic ticket gate 1 may be used as a set with an automatic ticket gate 1A for entry and an automatic ticket gate 1B for exit facing each other so as to form a ticket gate passage 6 therebetween. On the other hand, the automatic ticket gate 1A is an automatic ticket gate for admission that performs ticket gate processing (entrance ticket gate processing) for users who enter the ticket gate from the ticket gate along the advancing direction (direction of arrow D10) at the time of entrance. play a role as The other automatic ticket gate 1B performs ticket examination processing (exit ticket examination processing) for the user exiting from the ticket gate to the outside of the ticket gate along the traveling direction (direction of arrow D11) at the time of exit. It plays a role as an automatic ticket gate for exiting.

The automatic ticket gate 1 may be the automatic ticket gate 1A or the automatic ticket gate 1B used as a single unit to perform the ticket examination process for users traveling in one direction. In this case, the automatic ticket gate 1 is used as an automatic ticket gate for entry when a QR code reader 17 (see FIG. 3), which will be described later, is arranged outside the ticket gate. Further, the automatic ticket gate 1 is used as an exit automatic ticket gate when the QR code reading unit 17 is installed inside the ticket gate.

Specific configurations of the automatic ticket gate 1, the station server 2, the center device 3, and the user terminal 4 that constitute the station service system 100 will be described below.

[Automatic ticket gate 1]
FIG. 2 is a block diagram showing the configuration of the automatic ticket gate 1, and FIG. 3 is a perspective view showing the appearance of the automatic ticket gate 1. As shown in FIG. The automatic ticket gate 1 is installed at the ticket gate of the station 8, and performs ticket examination processing for users who pass through the ticket gate. As shown in FIG. 3, the automatic ticket gate 1 includes an automatic ticket gate 1A and an automatic ticket gate 1B which are installed facing each other. In this embodiment, the automatic ticket gate 1 receives a QR code 55 (see FIG. 5), which is a two-dimensional code, from the user terminal 4 owned by the user who is going to pass through the ticket gate passage 6 (see FIG. 3). to get as The QR code as a ticket is hereinafter referred to as a QR ticket 55 . QR ticket 55 is an example of the code of the present invention. When the automatic ticket gate 1 determines that the acquired QR ticket 55 is valid, it performs ticket inspection processing based on the ticket information included in the QR ticket 55, and determines that the acquired QR ticket 55 is invalid. When determined, the gate 15 is closed to prohibit the passage of the user through the ticket gate passage 6.例文帳に追加

Here, the QR ticket 55 is a QR code, which is a two-dimensional code consisting of a binary dot pattern in which ticket information is recorded, and is issued by a railway operator as a ticket. Specifically, when a conventionally well-known ticket purchase application installed in the user terminal 4 of the user who uses the railway transmits a ticket issuance request together with the ID of the user to the center device 3, the railway operator The managing center device 3 issues a QR ticket 55 according to the content of the request. The ticket information includes an ID indicating the user, a station name code indicating the boarding station, the issue date and time of issuing the QR ticket 55, the issue type of the QR ticket 55, the fare from the boarding station to the alighting station (price), the issue number of the QR ticket 55, and the like. In the embodiment, a QR code is exemplified as an example of the code of the present invention. good too.

As shown in FIGS. 2 and 3, the automatic ticket gate 1 includes a control unit 11, a storage unit 12, a display unit 13, a communication unit 14, a gate 15, and an IC card reading unit 16 (see FIG. 3). , and a QR code reader 17 , which are provided in the housing 10 (see FIG. 3 ) of the automatic ticket gate 1 .

The storage unit 12 is a non-volatile storage medium such as an HDD or SSD that stores various information. The storage unit 12 stores a control program for causing the control unit 11 to execute various kinds of processing such as various control processing and code validity determination processing (to be described later) executed by the automatic ticket gate 1, and various data used in the aforementioned various processing. is stored. Further, the storage unit 12 stores ticket issuing information transmitted from the station server 2 to the automatic ticket gate 1 . This ticket issue information is information used for collating the ticket information of the QR ticket 55 presented by the user at the time of the entrance ticket gate processing, and is transmitted from the center device 3 via the station server 2 .

The display unit 13 displays messages to users passing through the ticket gate passage 6 in accordance with instructions from the control unit 11 . The display unit 13 has, for example, a liquid crystal panel. As shown in FIG. 3 , the display unit 13 is arranged on the upper surface of the housing 10 of the automatic ticket gate 1 . Specifically, the display unit 13 is arranged on the upper surface of the housing 10 on the front side in the direction of travel of the user (the direction of the arrow D10 or the arrow D11) in the ticket gate passage 6 (see FIG. 3). In this embodiment, the display unit 13 is arranged at substantially the same position as the gate 15 used for entry or exit, or at the front side of the gate 15 in the traveling direction. When the user is permitted to pass, the display unit 13 displays a message indicating that the user is permitted to pass. When the user is not permitted to pass, the display unit 13 displays a message indicating that the user is not allowed to pass (prohibited). When the automatic ticket gate 1 is used for entry, the display unit 13 may display, for example, a message indicating that the fare is insufficient.

The communication unit 14 connects the automatic ticket gate 1 to the network N1 by wire or wirelessly, and performs data communication according to a predetermined communication protocol with an external device such as the station server 2 via the network N1. Communication interface.

The gate 15 is installed in the vicinity of the exit on the forward side in the direction of travel in the ticket gate passage 6 of the automatic ticket gate 1 . The gate 15 is, for example, a door that can be opened and closed. When the gate 15 is opened, the user can pass through the ticket gate passage 6 of the automatic ticket gate 1, and when the gate 15 is closed, the user can pass through the ticket gate passage 6 of the automatic ticket gate 1. becomes impossible. The gate 15 is not limited to a physical door, and may be a door represented by a stereoscopic image using a hologram, for example. Alternatively, the gate 15 may be a voice gate that permits or prohibits passage of the user by voice.

The QR code reading unit 17 is provided on the upper surface of the housing 10 on the front side in the traveling direction of the gate 15 provided near the exit. An IC card reader 16 is provided at the end of the housing 10 on the front side in the traveling direction, and the QR code reading section 17 is located on the reading surface of the IC card reading section 16 on the front side in the traveling direction. is provided. The QR code reading unit 17 picks up a screen image 51 (see FIG. 5) including a QR ticket (QR code) 55 displayed on the display screen 50 (see FIG. 5) of the user terminal 4 and converts it into digital image data. It includes an imaging unit 171 such as a digital camera that outputs as (read data). The image capturing unit 171 continuously captures (reads) the display screen 50 held over the reading surface of the QR code reading unit 17, and image data of a plurality of screen images 51 obtained by each image capturing (hereinafter simply referred to as “screen image”). image 51”) is transmitted to the control unit 11. The screen image 51 includes not only the QR ticket 55 but also change information 56, which will be described later. In the control unit 11 , the ticket information acquisition unit 111 acquires the QR ticket 55 from the screen image 51 sent from the QR code reading unit 17 and identifies the ticket information included in the QR ticket 55 .

Note that the imaging unit 171 may capture an image of the entire area of the display screen 50 as the screen image 51 .

In the present embodiment, a configuration is exemplified in which the imaging unit 171 captures a plurality of screen images 51 in a predetermined time from when the display screen 50 is held over the reading surface until the display screen 50 leaves the reading surface. , the invention is not limited to this configuration. For example, the imaging unit 171 may capture a moving image for the predetermined time. Whether or not the display screen 50 is held over the reading surface and whether or not the display screen 50 is separated from the reading surface can be determined based on a change in the amount of light incident on the imaging unit 171. be.

A plurality of screen images 51 (see FIG. 5) captured by the QR code reading unit 17 are used for detection processing by the change determination processing unit 112 (see FIG. 2) of the control unit 11. FIG.

The automatic ticket gate 1 is provided with an IC card reader 16 (see FIG. 3). It is also possible to pass through the automatic ticket gate 1. In this embodiment, description of the configuration of the IC card reader 16 and the IC card reading process is omitted.

The control section 11 controls the operation of each section of the automatic ticket gate 1 . The control unit 11 has control devices such as a CPU, ROM, and RAM. The ROM is a non-volatile storage medium in which control programs such as BIOS and OS for causing the CPU to execute various processes are stored in advance. The RAM is a volatile or non-volatile storage medium that stores various information, and is used as a temporary storage memory (work area) for various processes executed by the CPU. The control unit 11 controls the automatic ticket gate 1 by causing the CPU to execute various control programs pre-stored in the ROM or storage unit 12 .

As shown in FIG. 2, the control unit 11 includes a ticket information acquisition unit 111, a change determination processing unit 112 (an example of the change information detection unit of the present invention), an effectiveness determination processing unit 113 (effectiveness determination unit of the present invention). example), a traffic control unit 114 (an example of the traffic control unit of the present invention), and various processing units such as a gate processing unit 115 . The ticket information acquisition unit 111 and the QR code reading unit 17 described above are examples of the code acquisition unit of the present invention.

The control unit 11 functions as the various processing units by executing various types of processing according to the control program by the CPU. In other words, the CPU executes a program corresponding to the code validity determination process described later according to the present embodiment, thereby obtaining the ticket information acquisition unit 111, the change determination processing unit 112, the validity determination processing unit 113, the It functions as processing units such as the control unit 114 and the gate processing unit 115 . Also, part or all of the processing units included in the control unit 11 may be configured by electronic circuits. The control program may be a program for causing a plurality of processors to function as the various processing units. The control unit 11 or the CPU is an example of a computer that executes a program corresponding to code validity determination processing.

The ticket information acquisition unit 111 acquires the QR ticket 55 from the screen image 51 sent from the QR code reading unit 17 and acquires the ticket information recorded on the QR ticket 55 . The ticket information acquisition unit 111 extracts three clipped symbols (finder patterns) included in the QR code 55 from the screen image 51, and identifies the rectangular area identified by each symbol as the QR code image.

The change determination processing unit 112 detects changes in change information 56 (see FIG. 5), which will be described later, included in the plurality of screen images sent from the QR code reading unit 17 . For example, when the change information 56 is time information indicating the current time (hour, minute, second) displayed on the display screen 50 as shown in FIG. By comparing the plurality of screen images 51 obtained, it is determined whether or not the display contents of the change information 56 on the screen images 51 have changed over time. Here, the change information 56 is character information in which the current time, which changes every moment, is represented by numbers. Specifically, when the position information of the area 52 in which the change information 56 is displayed in the screen image 51 is registered in advance in the storage unit 12 of the automatic ticket gate 1, the change determination processing unit 112 selects a plurality of screen images. 51, the image of the area 52 is extracted, and the density of each pixel of each extracted image is compared. Then, when there is a pixel having a density difference equal to or greater than a predetermined threshold value, the change determination processing unit 112 determines that the change information 56 has changed. On the other hand, when it is determined that there is no pixel having the density difference, it is determined that the change information 56 has not changed.

When the change information 56 displayed on the display screen 50 is time information representing hours, minutes, and seconds by numbers, the predetermined time imaged by the imaging unit 171 should be at least one second or longer. desired. On the other hand, the current time displayed on the display screen 50 may be displayed in units of milliseconds, in seconds or less (time for measuring the elapsed time of one second). In this case, the change determination processing unit 112 can detect changes in the change information 56 with high accuracy if the predetermined time for which the image is captured by the image capturing unit 171 is at least 1/1000 of a second. can.

In addition, even if the change information 56 is not time information represented by numbers but is displayed in an analog format by the hour hand, the minute hand, and the second hand, the change determination processing unit 112 determines whether the change information 56 changes by the above-described method. can be detected. Note that the change information 56 may display the elapsed time after the QR ticket (QR code) 55 described later is displayed on the display screen 50 in units of milliseconds.

Here, the change determination processing unit 112 is not limited to the processing example described above. For example, if the position information of the area 52 where the change information 56 is displayed is not registered in the storage unit 12, the density of each pixel of each of the plurality of screen images 51 is compared to detect the change of the change information 56. may Further, the change determination processing unit 112 acquires character information included in the screen images 51 by performing OCR processing on a plurality of screen images 51, and compares the acquired character information to detect changes in the change information 56. can be anything.

The validity determination processing unit 113 determines that the QR ticket (QR code) 55 acquired by the ticket information acquisition unit 111 is valid on condition that the change determination processing unit 112 detects a change in the change information 56. do. In other words, the QR ticket 55 acquired by the ticket information acquiring unit 111 is not an invalid QR code (hereinafter referred to as an "unauthorized code") such as an illegally duplicated QR code or a used QR code. I judge.

By the way, in general, the QR code displayed on the display screen 50 of the user terminal 4 or the like can be easily duplicated. Therefore, a malicious user or a third party can easily forge the QR code as a ticket by duplicating the QR code displayed on the user terminal 4 possessed by the user. In this case, there is a possibility that the QR ticket is used by a person with bad intentions before it is used by a user with good intentions, or that a used code is used multiple times. On the other hand, in this embodiment, since the change determination processing unit 112 and the validity determination processing unit 113 are provided, it is possible to determine whether the QR ticket (code) 55 used in the automatic ticket gate 1 is valid or invalid. can be determined. As a result, unauthorized use using the unauthorized code can be prevented.

When the validity determination processing unit 113 determines that the QR train ticket 55 is valid, the control unit 11 executes ticket examination processing based on the ticket information included in the QR train ticket 55 .

The passage control unit 114 controls the passage of the user using the automatic ticket gate 1 based on the determination result of the validity determination processing unit 113 . Specifically, the passage control unit 114 permits the user to pass through the ticket gate passage 6 when it is determined that the QR ticket 55 is valid. Also, when the QR ticket 55 is determined to be invalid because the change determination processing unit 112 does not detect any change in the change information 56, the user is prohibited from passing through the ticket gate passage 6.例文帳に追加

The gate processing unit 115 controls the operation (opening/closing operation) of the gate 15 . For example, when the user is permitted to pass through the ticket gate passage 6 , the gate processing unit 115 opens the gate 15 . On the other hand, when the passage of the user through the ticket gate passage 6 is prohibited, the gate processing unit 115 closes the gate 15 .

[Station server 2]
The station server 2 is a server device installed in a station office or the like, and manages station service equipment such as the automatic ticket gate 1 belonging to the station 8 . The station server 2 is connected to the networks N1 and N2 by wire or wirelessly, performs data communication with the station service equipment such as the automatic ticket gate 1 through the network N1 according to a predetermined communication protocol, and communicates with the network N2. Data communication is executed with the center device 3 via the network. The ticket issuing information transmitted from the center device 3 is transmitted to all the automatic ticket gates 1 belonging to the station 8 and stored in the storage section 12 of the automatic ticket gates 1 .

[Center device 3]
The center device 3 is a central monitoring device managed by a railway operator that operates a railway business including stations 8, and station service equipment such as station servers 2 and automatic ticket gates 1 for all stations 8 operated by the railway operator. to manage. The center device 3 is wirelessly connected to the network N2, and performs data communication with the station server 2 and the user terminal 4 via the network N2 according to a predetermined communication protocol.

When the center device 3 receives a user ID and a ticket issuance request sent from a ticket purchase application running on the user terminal 4, the center device 3 generates a QR ticket containing the ticket information corresponding to the content of the request. (QR code) 55 is issued and transmitted to the user terminal 4 . In addition, the center device 3 generates ticket issue information necessary for matching with the QR ticket 55 presented by the user at the time of the entrance ticket gate processing, and transmits it to all the station servers 2 under the control of the center device 3 .

[User terminal 4]
FIG. 4 is a block diagram showing the configuration of the user terminal 4. As shown in FIG. FIG. 5 is a diagram showing an example of information displayed on the display screen 50 of the display unit 43 of the user terminal 4. As shown in FIG.

As shown in FIG. 4, the user terminal 4 includes a control section 41, an operation input section 42, a display section 43, a storage section 44, a communication section 46, and the like. The user terminal 4 is a mobile terminal possessed by a railroad user, such as a smart phone, a mobile phone, or a tablet terminal.

The communication unit 46 is a communication interface for wirelessly connecting the user terminal 4 to the network N2 and executing data communication according to a predetermined communication protocol with an external device such as the center device 3 via the network N2. is.

The operation input unit 42 is a user interface such as a mouse, keyboard, or touch panel that receives user operations. The user operates the operation input unit 42 when operating the ticket purchase application installed in the user terminal 4 or when displaying the issued QR ticket (QR code) 55. , enter the given instructions and information.

The display unit 43 is a display device such as a liquid crystal display or an organic EL display that displays various information. As shown in FIG. 5, the display screen 50 of the display unit 43 displays a QR ticket 55 necessary for using the railway and change information 56 as time information indicating the current time. In other words, when the QR ticket 55 is displayed on the display screen 50, the change information 56 (time information) is always displayed on the screen. In this embodiment, the change information 56 is displayed in another area 52 different from the display area of the QR ticket 55 on the display screen 50 . Here, the area 52 is arranged adjacent to the lower side of the QR ticket 55 on the display screen 50 .

The storage unit 44 is a non-volatile storage medium such as a flash memory that stores various information. The storage unit 44 stores various information such as a control program for causing the control unit 41 to execute various processes, the ticket purchase application program, and the issued QR train ticket 55 .

The control unit 41 has control devices such as a CPU, ROM, and RAM. The CPU is a processor that executes various kinds of arithmetic processing. The ROM is a non-volatile storage unit in which control programs such as BIOS and OS for causing the CPU to execute various processes are stored in advance. The RAM is a volatile or non-volatile storage unit that stores various types of information, and is used as a temporary storage memory (work area) for various processes executed by the CPU. The control unit 41 controls the user terminal 4 by causing the CPU to execute various control programs pre-stored in the ROM or storage unit 44 .

As shown in FIG. 4, the control unit 41 includes various processing units such as a purchase processing unit 411, a change information acquisition processing unit 412, and a display processing unit 413 (an example of the change information display processing unit of the present invention).

The control unit 41 functions as the various processing units by executing various types of processing according to the control program by the CPU. Also, part or all of the processing units included in the control unit 41 may be configured by electronic circuits. The control program may be a program for causing a plurality of processors to function as the various processing units.

The purchase processing unit 411 is implemented by the CPU executing the ticket purchase application program. The purchase processing unit 411 is a processing unit that functions on the user terminal 4 by installing the ticket purchase application on the user terminal 4 . When the ticket purchase application is activated on the user terminal 4 and the registered user ID and password are entered on the login screen, the ticket purchase screen is displayed. The user inputs ticket information including boarding station, alighting station, fare, etc. on the ticket purchase screen, and then confirms the issue request, and the information is sent to the center device 3 . After that, a QR ticket (QR code) 55 in which the ticket information is recorded is sent from the center device 3 by performing appropriate settlement processing. This QR ticket 55 is stored in the storage unit 44 so that display processing by the display processing unit 413 is possible.

The change information acquisition processing unit 412 performs processing for acquiring change information 56 displayed on the display screen 50 . Specifically, the time information (hour, minute, second) displayed by the clock function incorporated in the user terminal 4 is acquired as the change information 56 .

The display processing unit 413 performs processing for displaying the QR ticket 55 stored in the storage unit 44 and the change information 56 acquired by the change information acquisition processing unit 412 on the same display screen 50 . That is, the display processing unit 413 displays the change information 56 together with the QR ticket 55 on the display screen 50 of the display unit 43 of the user terminal 4 . In addition, when the QR ticket 55 is not displayed on the display screen 50, there is no need to display the change information 56 on the display screen 50. FIG.

[Code validity determination process]
Hereinafter, the code validity determination method of the present invention will be described together with an example of the code validity determination process executed by the control unit 11 of the automatic ticket gate 1, using the flowchart of FIG. In FIG. 5, S11, S12, . . . indicate processing procedure numbers (step numbers). The following code validity determination processing is performed when the display screen 50 of the user terminal 4 is held over the reading surface of the QR code reading unit 17 when the user enters the ticket gate passage 6 of the automatic ticket gate 1. done.

<Steps S11 to S12>
When the display screen 50 is held over the reading surface of the QR code reading unit 17, the control unit 11 continuously captures the display screen 50 to obtain a plurality of screen images 51 including the QR ticket 55. Data is acquired (S11). That is, the control unit 11 acquires the QR ticket 55 from the display screen 50 . Here, step S11 is an example of the code acquisition step of the present invention. After that, in step S12, the control unit 11 determines whether the acquired screen image 51 includes the QR ticket 55 or not. When the QR train ticket 55 and the change information 56 are properly displayed on the display screen 50, the screen image 51 also includes the QR train ticket 55. It is determined that the QR ticket 55 is included. If the screen image 51 is not displayed on the display screen 50, or if the screen image 51 cannot be captured well, the QR ticket 55 cannot be specified in the screen image 51. In this case, The control unit 11 determines that the screen image 51 does not include the QR ticket 55 . If it is determined in step S12 that the QR train ticket 55 is not included, the control unit 11 performs error processing to display a reading error message on the display unit 13 in the next step S20. The processing after step S11 is repeated.

<Steps S13 to S14>
When it is determined in step S12 that the QR ticket 55 is included, the control unit 11 determines whether or not the acquired screen image 51 includes change information 56 in the next step S13. Here, if it is determined that the screen image 51 does not contain the change information 56, the error processing of step S20 is performed, and then the processing from step S11 is repeated. On the other hand, when it is determined in step S12 that the change information 56 is included in the screen image 51, the control unit 11 extracts the image of the area 52 of the plurality of screen images 51 continuously captured, and extracts the image. The densities of each pixel of each image obtained are compared (S14).

<Step S15>
In the next step S15, the control section 11 determines whether or not the change information 56 has changed based on the comparison result in step S14. Here, step S15 is an example of the change information detection step of the present invention. Specifically, the control unit 11 determines that the change information 56 has changed when a pixel having a density difference equal to or greater than a predetermined threshold value exists among the compared pixels, and determines that the pixel exists. If not, it is determined that the change information 56 has not changed.

<Steps S16 to S17>
When it is determined in step S15 that the change information 56 has changed, the control unit 11 recognizes that the acquired QR ticket 55 is unused and properly issued. That is, the acquired QR ticket 55 is recognized as valid, not as the fraudulent code. Here, steps S16 and S17 are an example of the validity determination step of the present invention. In this case, the controller 11 opens the gate 15 near the exit of the ticket gate passage 6 (S16). Then, a message indicating that it is possible to pass is displayed on the display unit 13 (S17).

<Steps S18 to S19>
On the other hand, when it is determined in step S15 that the change information 56 has not changed, the control section 11 recognizes that the acquired QR ticket 55 is the illegal code. Since passage using such an illegal code should not be permitted, in this case, the control unit 11 closes the gate 15 near the exit of the ticket gate passage 6 (S18), and the display unit 13 indicates that passage is prohibited (prohibited). A message indicating that is displayed (S19). As a result, it is possible to reliably stop unauthorized users who use the unauthorized code from passing through.

As described above, in the automatic ticket gate 1 according to the present embodiment, the code validity determination process described above is performed. Therefore, when it is determined that the change information 56 has changed, the acquired QR ticket 55 is It can be determined that the code is valid, and if no change in the change information 56 is detected, the acquired QR ticket 55 can be determined as an invalid code. As a result, even if the illegal code obtained by duplicating the QR code as a ticket is used in the automatic ticket gate 1, the illegal code is determined to be invalid. Unauthorized use using Further, in this embodiment, when determining whether the QR ticket 55 is valid or not, there is no need to perform authentication processing for authenticating whether or not it has already been used with the center device 3. The validity of the QR ticket 55 can be determined only by updating the ticket purchase application of the user terminal 4 and the operation program of the automatic ticket gate 1 without constructing an authentication system for performing .

In addition, since the change information 56 described above is time information indicating the current time, it is possible to use the clock function incorporated in the user terminal 4, without performing the process of generating the change information 56. Change information 56 can be obtained.

In the above-described embodiment, the screen image 51 is continuously read by the QR code reading unit 17, and the QR ticket 55 is acquired by the ticket information acquisition unit 111 of the control unit 11. The present invention is not limited to this processing example. For example, the function of the ticket information acquisition section 111 may be provided in the QR code reading section 17 .

Further, in the above-described embodiment, the configuration in which the change information 56 is displayed in the area 52 different from the display area of the QR ticket 55 on the display screen 50 was exemplified, but the present invention is not limited to this example. For example, instead of the change information 56 described above, change information 56A shown in FIG. 7 can be applied. Here, the change information 56A is a partial code assigned to a part of the QR ticket (QR code) 55 (that is, a part of the QR ticket 55), and the binary is a dot pattern. In this case, in the QR train ticket 55, the variation information 56A is a portion not used as the ticket information, and a very small portion with respect to the size of the QR train ticket 55 is assigned. It is preferable that the size of the portion concerned is a size that makes it difficult for the user to easily grasp that the change has occurred. When using such change information 56A, the change determination processing unit 112 detects that the form of the change information 56A has changed. That is, it is determined whether or not the form of the change information 56A has changed over time. Further, the change information acquisition processing unit 412 of the user terminal 4 performs processing to change the information in the area indicated by reference numeral 53 into a form indicating different information every predetermined time (for example, 0.1 second). For example, the change information acquisition processing unit 412 changes the form shown in the main part VIIA of FIG. 7 to the form shown in the main part VIIB of FIG. At least two patterns are sufficient for the form to be changed, and, for example, three or more patterns are preferable. The predetermined time is shorter than the time the user holds the display screen 50 over the QR code reader 17 to read the QR ticket 55. It may be the time at which the change information 56 changes during reading).

Note that the binary dot pattern indicated by the change information 56A described above does not have to indicate specific information. It is sufficient that the form of the dot pattern changes with the lapse of time every predetermined time. On the other hand, the binary dot pattern indicated by the change information 56A may have specific information. For example, the dot pattern indicated by the change information 56A may be time information indicating the current time, or information indicating the elapsed time since the QR ticket (QR code) 55 was displayed on the display screen 50 . In this case, the change information acquisition processing unit 412 acquires time information and elapsed time (hours, minutes, seconds, milliseconds) displayed by the clock function incorporated in the user terminal 4, and responds to the change. It is preferable that the change information 56A is generated by changing the dot pattern by changing the dot pattern.

It is also possible to apply change information 56B shown in FIG. 8 instead of the change information 56 described above. Here, the change information 56B is displayed in the area 52 and is an image (moving image) that changes with the passage of time. In the example shown in FIG. 8, an icon image of a train that moves leftward within the area 52 with the passage of time is shown. When such change information 56B is used, the change determination processing unit 112 detects that the position (display position) of the change information 56B has changed. That is, it is determined whether or not the position of the change information 56A has changed over time. Further, the change information acquisition processing unit 412 of the user terminal 4 performs processing to change the position of the change information 56A every predetermined time (for example, 0.1 second). Note that the train icon image is merely an example, and the shape of the image is not limited. As the change information 56B, it is also possible to apply an image whose shape changes over time, an image whose color changes over time, etc., in addition to the image whose position changes within the region 52 .

1: Automatic ticket gate 2: Station server 3: Center device 4: User terminal 8: Station 9: Code validity determination system 11: Control unit 12: Storage unit 13: Display unit 14: Communication unit 15: Gate 17: QR Code reading unit 50 : Display screen 51 : Screen image 52 : Area 55 : QR code (QR ticket)
56, 56A, 56B: change information 100: station service system 111: ticket information acquisition unit 112: change determination processing unit 113: validity determination processing unit 114: traffic control unit 115: gate processing unit 171: imaging unit 411: purchase Processing unit 412: change information acquisition processing unit 413: display processing unit

Claims (7)

a code acquisition unit that acquires an information code containing predetermined information from a display screen of a terminal device;
A change determination processing unit that determines whether or not a form of a partial code assigned to a partial area not used as an information recording area in the information code acquired by the code acquisition unit has changed over time. When,
and a validity determination unit that determines that the information code acquired by the code acquisition unit is valid when the change determination processing unit determines that the form of the partial code has changed. 2. The automatic ticket gate according to claim 1 , wherein said partial code is information different from said information and is time information indicating current time. The code acquisition unit continuously reads the screen image of the display screen including the information code,
2. The change determination processing unit determines whether or not the partial code has changed over time by comparing a plurality of the screen images continuously read by the code acquisition unit. Automatic ticket gate according to 2 . Further comprising a passage control unit that controls the passage of users based on the determination result of the validity determination unit,
The validity determination unit determines that the information code is invalid when the change determination processing unit determines that the form of the partial code has not changed,
The traffic control unit
When the validity determination unit determines that the information code is valid, the user is allowed to pass, and when the validity determination unit determines that the information code is invalid, the user is prohibited from passing. The automatic ticket gate according to any one of claims 1 to 3 . Change information for displaying an information code containing predetermined information on the display screen of a terminal device, and a partial code whose form changes over time in a part of the information code that is not used as the information recording area. a display processing unit;
a code acquisition unit that acquires the information code from the display screen of the terminal device;
a change determination processing unit that determines whether the form of the partial code included in the information code acquired by the code acquisition unit has changed over time;
a validity determination unit that determines that the information code acquired by the code acquisition unit is valid when the change determination processing unit determines that the form of the partial code has changed. . a code acquisition step of acquiring an information code containing predetermined information from the display screen of the terminal device;
a change determination step of determining whether or not a form of a partial code assigned to a partial area not used as an information recording area in the information code acquired by the code acquisition step has changed over time; ,
a validity determination step of determining validity of the information code acquired by the code acquisition step when the change determination step determines that the form of the partial code has changed; and a code validity determination step executed by a computer . judgment method. A program for causing a computer to execute each step of the code validity determination method according to claim 6 .

Images