JP2014204187A - Communication terminal, image forming device, control method thereof, program, and communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a communication terminal, an image forming device, its control method, a program, and a communication system that shorten time necessary to establish communication between the communication terminal and the image forming device while restraining the amount of power consumption at the image forming device.SOLUTION: A communication terminal 300 obtains data indicating whether or not an image forming device is operating in a low power consumption state of operating at power smaller than predetermined power from the image forming device by communicating with the image forming device by a first communication method, obtains radio information to communicate by a second communication method from the image forming device if the obtained data indicates that the image forming device is operating in the low power consumption state, and transfers authentication data to make the image forming device authenticate the communication terminal to the image forming device once the radio information is obtained by radio information acquisition means.

Description

  The present invention relates to a communication terminal, an image forming apparatus, a control method thereof, a program, and a communication system.

  The image forming apparatus is provided with an authentication function for controlling whether or not the user can use the image forming apparatus. One method is to use an RFID (Radio Frequency IDentification) tag.

  In this method, information is read from an approaching RFID tag in an image forming apparatus including a tag reader / writer, and authentication is performed based on the information.

  On the other hand, in recent years, a technology called NFC (Near Field Communication), which is one of short-range wireless communication means compatible with RFID, has begun to be implemented in communication terminals such as smartphones and tablet PCs.

  The NFC specification defines three functions. The first is a reader / writer function, which can perform the same operation as the previous tag reader / writer. The second is a card emulation function, which can perform the same operation as the previous RFID tag. The third is a peer-to-peer function, which allows various data transmission / reception via NFC.

  A reader / writer is mounted on the NFC function-equipped communication terminal, and by using the reader / writer, data can be read from or written to the RFID card or the NFC card.

  Therefore, it is possible to realize a function equivalent to user authentication using an RFID tag by writing authentication data from an NFC function-equipped communication terminal to an NFC card emulation block provided in the image forming apparatus.

  In recent years, when image data stored in a communication terminal is printed by an image forming apparatus, wireless communication such as Bluetooth (registered trademark) or IEEE802.11a / b / g / n is used to eliminate the troublesomeness caused by cable connection. It is becoming connected by communication.

  With this wireless connection, you no longer have to grope into the back of the device or worry about where to connect.

  On the other hand, the connection between the communication terminal and the image forming apparatus that has been clearly shown in the form of a wired connection is lost. Therefore, there is a problem that it is difficult to select a terminal that is desired to be connected from a large number of wireless communication terminals, particularly when there are many wireless communication terminals that can be communication targets.

  Therefore, there is a communication means having directivity separately from the wireless communication means. First, after receiving the wireless communication ID using the directivity communication means, the communication partner is explicitly changed by switching from directional communication to wireless communication. A method for realizing wireless communication connection while specifying is proposed (see, for example, Patent Document 1).

  The IrDA (Infrared Data Association) standard is used as a communication means having directivity in Patent Document 1, but one of the features of NFC is the size of the NFC communication antenna or a component disposed near the antenna. However, the physical distance at which communication can be established is about 10 cm.

  Therefore, it is possible to explicitly indicate a device to be connected in the same manner as IrDA by using short-range wireless communication such as NFC.

  Therefore, an information processing device has been proposed that establishes wireless communication such as a wireless LAN with a communication terminal after transferring the device ID to a communication terminal using a contactless ID card equipped with short-range wireless communication (for example, a patent). Reference 2).

JP 2001-156723 A JP 2007-267370 A

  However, the above-described conventional technology does not consider the power control of the apparatus. In recent years, as environmental awareness has increased, in image forming apparatuses such as copiers, when the apparatus has not been used for a predetermined time, the apparatus is shifted to a low power consumption state to save power. .

  In that case, the controller that controls the apparatus also stops power supply except for a part of the network I / F unit or the like, but in this low power consumption state, the controller generally completes startup from power-on. It takes several seconds to several tens of seconds.

  Therefore, in order to immediately start wireless communication with a communication terminal, it is necessary to always turn on the controller unit that controls communication, and the device cannot be shifted to a low power consumption state. There is a problem that power is wasted.

  An object of the present invention is to provide a communication terminal, an image forming apparatus, a control method thereof, and a communication terminal that reduce the time required to establish communication between the communication terminal and the image forming apparatus while suppressing power consumption of the image forming apparatus. It is to provide a program and a communication system.

  In order to achieve the above object, a communication terminal according to claim 1 is a communication terminal capable of communicating with an image forming apparatus using a first communication method and a second communication method, which are two different wireless communication methods, and the image forming apparatus Data indicating whether or not the image forming apparatus is operating in a low power consumption state in which the image forming apparatus operates with a power smaller than a predetermined power by communicating with the apparatus using the first communication method. And when the data acquired by the data acquisition unit indicates that the image forming apparatus is operating in a low power consumption state, the second communication is performed from the image forming apparatus. Wireless information acquisition means for acquiring wireless information for communication by the method, and when the wireless information is acquired by the wireless information acquisition means, the communication terminal is made to authenticate the image forming apparatus. Characterized by the authentication data, further comprising a transfer means for transferring to the image forming apparatus.

  According to the present invention, a communication terminal, an image forming apparatus, a control method thereof, and a communication terminal that reduce the time required to establish communication between the communication terminal and the image forming apparatus while suppressing power consumption of the image forming apparatus, and A program and a communication system can be provided.

It is a figure which shows schematic structure of the communication system which concerns on embodiment of this invention. It is a figure which shows schematic structure of the image forming apparatus in FIG. It is a figure which shows schematic structure of the communication terminal in FIG. It is a flowchart which shows the procedure of the wireless connection process performed by CPU and MP in FIG. It is a flowchart which shows the procedure of the wireless connection process performed by CPU in FIG. FIG. 6 is a sequence diagram illustrating the wireless connection process described with reference to FIGS.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a diagram showing a schematic configuration of a communication system 10 according to an embodiment of the present invention.

  In FIG. 1, the communication system 10 includes an image forming apparatus 100, a computer terminal 200, a communication terminal 300, and a wireless LAN access point 400.

  The image forming apparatus 100 has a copy function, a print function, and a scan function, and also has an authentication function for a user who uses these functions. In user authentication, an authentication card (not shown) in which user ID information is recorded is used.

  The image forming apparatus 100 receives the ID information of the user included in the authentication card through the NFC communication 600, and performs user authentication based on an authentication database (not shown) stored in the image forming apparatus 100.

  For this authentication, a server (not shown) that stores ID information of the user who performs the authentication process may be separately prepared, and the authentication process may be performed via the local area network 500.

  The computer terminal 200 can transmit a print job to the image forming apparatus 100 and can refer to data digitized by the image forming apparatus 100.

  The communication terminal 300 is a portable information processing terminal having an NFC communication function, a wireless LAN communication function, and the like, and corresponds to a smartphone, a tablet PC, or the like. The NFC communication is the first communication method, and the wireless LAN communication is the second communication method.

  The communication terminal 300 can communicate with the image forming apparatus 100 through the NFC communication 600, and information transmitted / received includes an IP address, user ID information, and the like.

  Further, the communication terminal 300 can print the image data by transmitting the image data stored in the communication terminal 300 to the image forming apparatus 100 by the wireless LAN communication 700.

  The wireless LAN access point 400 has a function that enables communication between a communication terminal 300 having a wireless LAN interface and the devices connected to the local area network 500.

  As described above, the image forming apparatus 100 and the communication terminal 300 can communicate by NFC communication and wireless LAN communication which are two different wireless communication methods.

  Although the communication system 10 of FIG. 1 has a system configuration using a wireless LAN, other wireless communication technology such as Bluetooth (registered trademark) may be used.

  The local area network 500 is a network realized by Ethernet (registered trademark) or the like, and the image forming apparatus 100, the computer terminal 200, and the wireless LAN access point 400 can communicate with each other via the local area network 500.

  FIG. 2 is a diagram showing a schematic configuration of the image forming apparatus 100 in FIG.

  2, the image forming apparatus 100 includes a controller 101, a scanner unit 102, a printer unit 103, an operation unit 108, a power supply control unit 117, an NFC 110, and a power supply unit 116.

  Among these, the scanner unit 102 is an image input device, and the printer unit 103 is an image output device. The operation unit 108 inputs and outputs information between the image forming apparatus 100 and the user.

  The controller 101 performs control of image processing and image forming operation. The controller 101 includes a CPU 104, a RAM 105, a ROM 106, a network interface 109, and an HDD 107.

  The CPU 104 is a central processing unit that controls the entire image forming apparatus 100. The RAM 105 is a work memory for temporarily storing data used for calculation by the CPU 104.

  The ROM 106 stores a program used to start the image forming apparatus 100 and is mainly used when starting the image forming apparatus 100. The HDD 107 is a hard disk drive that stores software related to the control of the image forming apparatus 100, various settings, saved documents, and the like.

  The network interface 109 is an interface with the local area network 500.

  The NFC 110 includes an NFC communication unit 111, an antenna 113, an MP 114, and a work memory 115.

  The MP 114 controls the NFC 110 by communicating with the CPU 104. The work memory 115 is used as a work area for the MP 114.

  The NFC communication unit 111 performs NFC communication with an external device by an antenna 113 that transmits and receives radio waves generated by NFC communication. The NFC communication unit 111 is a storage unit for storing data exchanged by the NFC communication 600, and is a FIFO memory. A buffer 112 is provided.

  The memory capacity of the buffer 112 described above has only a minimum necessary capacity for performing NFC communication. Also, the work memory 115 has only a capacity necessary for the MP 114 to operate.

  The power supply unit 116 generates DC power from commercial power and supplies power to each unit such as the controller 101, the scanner unit 102, the printer unit 103, and the NFC 110 of the image forming apparatus 100.

  The power supply control unit 117 outputs an on / off control signal to the power supply unit 116. The power supply unit 116 includes switches that can control on / off of the DC power supplied to each unit in accordance with an on / off control signal.

  Image forming apparatus 100 according to the present embodiment can be shifted to a low power consumption state. The transition to the low power consumption state is performed when the image forming apparatus 100 is not used for a predetermined period of time or when a condition for transition to the low power consumption state such as an instruction from the user is satisfied using the operation unit 108.

  This low power consumption state is a normal operation in which power is supplied from the power supply unit 116 to the controller 101, the scanner unit 102, the printer unit 103, the operation unit 108, the power supply control unit 117, and the NFC 110. The state where the electric power is smaller than the electric power in the state is shown.

  As an example, in this embodiment, a state in which power is supplied only to the network interface 109 and the power supply control unit 117 is a low power consumption state.

  That is, no power is supplied to the controller 101, the scanner unit 102, and the printer unit 103 except the network interface 109.

  In addition, a state where the power supply is stopped only in the operation unit 108 and the scanner unit 102 or a plurality of low power consumption states with different power consumption may be provided. When a plurality of low power consumption states are provided, control is performed in which the power supply of each unit is sequentially turned off after a predetermined time has elapsed.

  FIG. 3 is a diagram showing a schematic configuration of the communication terminal 300 in FIG.

  In FIG. 3, the communication terminal 300 includes a CPU 301, a RAM 302, an operation unit 304, a camera 305, a flash ROM 303, a wireless LAN interface 306, and an NFC control unit 307, which are connected via a system bus 309.

  The CPU 301 is a central processing unit that controls the entire communication terminal 300. A RAM 302 is a work memory for temporarily storing data used for calculation by the CPU 301.

  The flash ROM 303 stores programs used by the CPU 301 and various data. The operation unit 304 inputs and outputs information between the user and the communication terminal 300, and is configured by an LCD and a touch panel.

  The camera 305 captures still images and moving images. The wireless LAN interface 306 is an interface for transmitting / receiving data to / from an external device via the wireless LAN communication 700.

  The NFC control unit 307 performs control for performing NFC communication. The antenna 308 is an antenna for connecting to the NFC control unit 307 and performing NFC communication, and performs transmission and reception of radio waves generated by NFC communication with an external device.

  FIG. 4 is a flowchart showing a procedure of wireless connection processing executed by the CPU 104 and the MP 114 in FIG.

  Further, the process in FIG. 4 is executed when the transition condition to the low power consumption state is satisfied.

  In FIG. 4, when the condition for shifting to the low power consumption state is satisfied, the CPU 104 turns on the sleep flag and stores it in the buffer 112, and stores the wireless information in the work memory 115 (step S401). This step S401 corresponds to data storage means.

  This sleep flag is data indicating whether or not the image forming apparatus 100 is operating in the low power consumption state, and indicates whether or not the image forming apparatus 100 is in the low power consumption state. Otherwise, off. The wireless information is information for communicating by wireless LAN communication, and is information such as an IP address and an SSID for connecting the image forming apparatus 100 and the communication terminal 300 by the wireless LAN access point 400.

  Next, in the image forming apparatus 100, the power supply from the power supply unit 116 is partly interrupted by the on / off control signal from the power supply control unit 117, and shifts to the low power consumption state (step S402). At this time, since the power supply to the CPU 104 is stopped, the processing of the NFC 110 in the low power consumption state is executed by the MP 114 instead of the CPU 104.

  The NFC communication unit 111 of the image forming apparatus 100 stands by while alternately switching between the reader / writer function and the card emulation function, and waits for the user to hold the NFC communication device and establish NFC communication.

  Here, the NFC control unit 307 included in the communication terminal 300 serves as a reader / writer function, and the authentication card serves as a card emulation function. Therefore, the NFC 110 can determine whether the authentication card is held up or the communication terminal 300 is held up according to the established communication.

  The NFC communication unit 111 determines whether communication has been established with the reader / writer function (step S404).

  As a result of the determination in step S404, when communication is established with the reader / writer function (YES in step S404), the MP 114 can identify the device held over as an authentication card. Therefore, while issuing a return request signal to the power supply control unit 117 (step S405), the ID information of the authentication card is acquired (step S406), and the process proceeds to step S411.

  On the other hand, as a result of the determination in step S404, if communication is not established with the reader / writer function (NO in step S404), the NFC communication unit 111 determines whether communication is established with the card emulation function (step S407). ). Steps S404 and 407 correspond to a determination unit that determines whether the communication partner communicated by NFC communication is the communication terminal 300 or the authentication card when operating in the low power consumption state.

  If the result of determination in step S407 is that communication has not been established with the card emulation function (NO in step S407), processing returns to step S404.

  As a result of the determination in step S407, when communication is established by the card emulation function (YES in step S407), the MP 114 can specify that the device held over is the communication terminal 300.

  At the same time as the communication is established, the MP 114 issues a return request signal to the power supply control unit 117 in order to return the image forming apparatus 100 from the low power consumption state (step S408). Further, when the sleep flag ON is acquired by the communication terminal 300 (step S409) and the MP 114 receives this from the NFC communication unit 111, the MP 114 stores the wireless information stored in the work memory 115 in the buffer 112 (step S410). ). This step S410 corresponds to the wireless information storage means.

  At this time, the CPU 301 of the communication terminal 300 acquires the wireless information stored in the buffer 112 through NFC communication, and then writes the ID information stored in the flash ROM 303 into the buffer 112 through NFC communication.

  When the image forming apparatus 100 returns from the low power consumption state (step S411), the processing of the NFC 110 is executed by the CPU 104 instead of the MP 114.

  Then, the CPU 104 acquires data in the buffer 112 (step S412). Next, it is determined whether or not ID information has been acquired from the buffer 112 (step S413).

  When the ID information is acquired as a result of the determination in step S413 (YES in step S413), the CPU 104 performs user authentication based on an authentication database (not shown) stored in the HDD 107.

  Then, it is determined whether or not the user authentication result is OK (step S414). If the user authentication result is OK (YES in step S414), a login process is performed (step S415), and the process proceeds to step S416. Steps S414 and 415 correspond to authentication means. When the communication terminal 300 is authenticated in this way, the image forming apparatus 100 communicates with the communication terminal 300 via a wireless LAN.

  On the other hand, when the user authentication result is not OK (NO in step S414), the process proceeds to step S416.

  Returning to step S413, if the ID information is not acquired as a result of the determination in step S413 (NO in step S413), the sleep flag off is stored in the buffer 112 (step S416), and this process is terminated.

  FIG. 5 is a flowchart showing a procedure of wireless connection processing executed by the CPU 301 in FIG.

  The wireless connection process in FIG. 5 is based on the premise that an application for user authentication and wireless setting is prepared in advance in the communication terminal 300 and the user instructs execution of this application. This wireless connection process is a process after the communication terminal 300 is held over the NFC 110 of the image forming apparatus 100 by the user.

  When the NFC control unit 307 establishes NFC communication (YES in step S501), the NFC control unit 307 acquires the sleep flag stored in the buffer 112 of the image forming apparatus 100 through NFC communication (step S502). This step S502 corresponds to data acquisition means.

  Next, it is determined whether or not the acquired sleep flag is on (step S503). As a result of the determination in step S503, if the read sleep flag is OFF instead of ON (NO in step S503), authentication and wireless setting are performed because the CPU 104 of the image forming apparatus 100 is in an activated state (step S504). The process ends.

  Specifically, in step S504, first, wireless information is requested to the CPU 104 while transferring ID information by NFC communication. When the CPU 104 writes wireless information in the buffer 112 in response to the request, the wireless information is acquired by NFC communication, the wireless setting of the communication terminal 300 is performed, and the wireless connection with the image forming apparatus 100 is completed. As described above, when it is not indicated that the operation is in the low power consumption state, the authentication data is transferred and the wireless information is acquired.

  As a result of the determination in step S503, if the read sleep flag is ON (YES in step S503), the wireless information stored in the buffer 112 is acquired by NFC communication (step S505). This step S505 corresponds to wireless information acquisition means.

  Next, the ID information stored in the flash ROM 303 of the communication terminal 300 is transferred to the buffer 112 by transferring by NFC communication (step S506), and this process is terminated. This step S506 corresponds to the transfer means. Thereafter, when the communication terminal 300 is authenticated by the image forming apparatus 100 using the transferred authentication data, the image forming apparatus 100 communicates with the image forming apparatus 100 by wireless LAN communication.

  In the above-described processing, the wireless information is acquired first, but this is because the size of the buffer 112 of the NFC 110 is generally only about 64 bytes, and the communication terminal 300 first writes the ID information into the buffer 112. This is because the wireless information stored in the buffer 112 may be erased. Thus, the storage capacity of the buffer 112 is a capacity that cannot store authentication data and wireless information simultaneously.

  Further, the above-described processing is based on the premise that the user instructs execution of the application. However, this processing may be made available to other applications and may be executed by other applications.

  FIG. 6 is a sequence diagram illustrating the wireless connection process described with reference to FIGS.

  6 is executed when the condition for shifting to the low power consumption state is satisfied, as in FIG.

  When the condition for shifting to the low power consumption state is satisfied, the controller 101 turns on the sleep flag and stores it in the buffer 112, and stores the wireless information in the work memory 115 (step S601).

  Next, the controller 101 issues a request signal for shifting to the low power consumption state to the power control unit 117 (step S602). As a result, the image forming apparatus 100 shifts to a low power consumption state. At this time, the controller 101 is turned off except for the network interface 109.

  Next, when the communication terminal 300 is held over the NFC 110 by the user, the communication terminal 300 issues an NFC communication request signal to the NFC 110 (Step S603) and receives an NFC communication response signal (Step S604). NFC communication is established.

  When the NFC communication is established, the NFC 110 issues a return request signal from the low power consumption state to the power control unit 117 (step S605), and power supply to the controller 101 is started.

  Further, the communication terminal 300 reads the sleep flag ON by NFC communication (step S606), and confirms whether the image forming apparatus 100 is in a low power consumption state.

  When the communication terminal 300 reads the sleep flag, the NFC 110 writes the wireless information in the buffer 112 so that the wireless information can be transmitted by NFC.

  Next, the communication terminal 300 acquires wireless information stored in the buffer 112 by NFC communication (step S607), writes ID information to the buffer 112 by NFC communication (step S608), and performs wireless setting.

  When the controller 101 receives the return request signal from the low power consumption state and completes the activation after several seconds to several tens of seconds, the controller 101 first acquires data stored in the buffer 112 of the NFC 110 (step S609).

  In this case, since the ID information is written in the buffer by the communication terminal 300, the controller 101 acquires the ID information and performs user authentication.

  When the user authentication is completed, the controller 101 turns off the sleep flag and stores it in the buffer 112 to indicate that it has been activated (step S610).

  Thus, wireless setting of the communication terminal 300 and user authentication of the controller are completed, and wireless communication between the image forming apparatus 100 and the communication terminal 300 is established.

  According to the embodiment described above, the time required to establish communication between the communication terminal and the image forming apparatus can be reduced. Specifically, in the past, it took time until the image forming apparatus returned to the normal state in order to establish communication. However, since the return to the normal state and the exchange of the authentication data can be performed in parallel, Time can be reduced.

(Other embodiments)
The present invention is also realized by executing the following processing. That is, software (program) that realizes the functions of the above-described embodiments is supplied to a system or apparatus via a network or various storage media, and a computer (or CPU, MPU, etc.) of the system or apparatus reads the program code. It is a process to be executed. In this case, the program and the storage medium storing the program constitute the present invention.

DESCRIPTION OF SYMBOLS 10 Communication system 100 Image forming apparatus 300 Communication terminal 101 Controller 104,301 CPU
105,302 RAM
106 ROM
110 NFC
111 NFC communication unit 112 Buffer 114 MP
115 Work Memory 116 Power Supply Unit 117 Power Supply Control Unit 303 Flash ROM
307 NFC controller

Claims (11)

A communication terminal capable of communicating with an image forming apparatus using a first communication method and a second communication method, which are two different wireless communication methods,
Whether or not the image forming apparatus is operating in a low power consumption state in which the image forming apparatus operates with a power smaller than a predetermined power by communicating with the image forming apparatus using the first communication method. Data acquisition means for acquiring data indicating
If the data acquired by the data acquisition means indicates that the image forming apparatus is operating in a low power consumption state, wireless information for communicating from the image forming apparatus by the second communication method Wireless information acquisition means for acquiring
And a transfer means for transferring authentication data for authenticating the communication terminal to the image forming apparatus when the wireless information is acquired by the wireless information acquiring means. Terminal.   When the data acquired by the data acquisition means does not indicate that the image forming apparatus is operating in a low power consumption state, the authentication data is transferred by the transfer means and the wireless information acquisition is performed. The communication terminal according to claim 1, wherein the wireless information is acquired by means.   3. The apparatus according to claim 1, wherein when the communication terminal is authenticated by the image forming apparatus based on the authentication data transferred by the transfer unit, the image forming apparatus communicates with the image forming apparatus using the second communication method. Communication terminal. An image forming apparatus capable of communicating with a communication terminal using a first communication method and a second communication method, which are two different wireless communication methods,
Data indicating that the image forming apparatus is operating in a low power consumption state is acquired as data acquired by the communication terminal when the image forming apparatus operates in a low power consumption state where the image forming apparatus operates at a power lower than a predetermined power. Data storage means for storing in the storage unit;
A discriminating means for discriminating whether a communication partner communicating with the first communication method is the communication terminal or an authentication card when operating in the low power consumption state;
When the determining unit determines that the communication partner is the communication terminal and the data stored in the storage unit by the data storage unit is acquired by the communication terminal, the storage unit stores the data in the second communication method. Wireless information storage means for storing wireless information for communication;
When returning from the low power consumption state to a normal state that operates with the predetermined power, the communication terminal transferred from the communication terminal to the storage unit and stored in the storage unit is authenticated to the image forming apparatus. An image forming apparatus comprising: authentication means for authenticating the communication terminal using authentication data for causing   The image forming apparatus according to claim 4, wherein when the communication terminal is authenticated by the authentication unit, the image forming apparatus communicates with the communication terminal by the second communication method.   6. The image forming apparatus according to claim 4, wherein a storage capacity of the storage unit is a capacity that cannot store the authentication data and the wireless information simultaneously. A method for controlling a communication terminal capable of communicating with an image forming apparatus using a first communication method and a second communication method, which are two different wireless communication methods,
Whether or not the image forming apparatus is operating in a low power consumption state in which the image forming apparatus operates with a power smaller than a predetermined power by communicating with the image forming apparatus using the first communication method. A data acquisition step for acquiring data indicating
If the data acquired by the data acquisition step indicates that the image forming apparatus is operating in a low power consumption state, wireless information for communicating from the image forming apparatus by the second communication method Wireless information acquisition step for acquiring,
A transfer step of transferring authentication data for causing the image forming apparatus to authenticate the communication terminal to the image forming apparatus when the wireless information is acquired by the wireless information acquiring step. Method. A method for controlling an image forming apparatus capable of communicating with a communication terminal using a first communication method and a second communication method, which are two different wireless communication methods,
Data indicating that the image forming apparatus is operating in a low power consumption state is acquired as data acquired by the communication terminal when the image forming apparatus operates in a low power consumption state where the image forming apparatus operates at a power lower than a predetermined power. A data storage step for storing in the storage unit;
A determination step of determining whether a communication partner communicated by the first communication method is the communication terminal or the authentication card when operating in the low power consumption state;
When the determination step determines that the communication partner is the communication terminal and the data stored in the storage unit by the data storage step is acquired by the communication terminal, the second communication method is stored in the storage unit. A wireless information storing step for storing wireless information for communication;
When returning from the low power consumption state to a normal state that operates with the predetermined power, the communication terminal transferred from the communication terminal to the storage unit and stored in the storage unit is authenticated to the image forming apparatus. An authentication step of authenticating the communication terminal using authentication data for causing the communication terminal to perform authentication. A program for causing a computer to execute a control method of a communication terminal capable of communicating with an image forming apparatus using a first communication method and a second communication method, which are two different wireless communication methods,
The control method is:
Whether or not the image forming apparatus is operating in a low power consumption state in which the image forming apparatus operates with a power smaller than a predetermined power by communicating with the image forming apparatus using the first communication method. A data acquisition step for acquiring data indicating
If the data acquired by the data acquisition step indicates that the image forming apparatus is operating in a low power consumption state, wireless information for communicating from the image forming apparatus by the second communication method Wireless information acquisition step for acquiring,
A transfer step of transferring authentication data for causing the image forming apparatus to authenticate the communication terminal to the image forming apparatus when the wireless information is acquired by the wireless information acquiring step; . A program for causing a computer to execute a control method for an image forming apparatus capable of communicating with a communication terminal by using a first communication method and a second communication method, which are two different wireless communication methods,
The control method is:
Data indicating that the image forming apparatus is operating in a low power consumption state is acquired as data acquired by the communication terminal when the image forming apparatus operates in a low power consumption state where the image forming apparatus operates at a power lower than a predetermined power. A data storage step for storing in the storage unit;
A determination step of determining whether a communication partner communicated by the first communication method is the communication terminal or the authentication card when operating in the low power consumption state;
When the determination step determines that the communication partner is the communication terminal and the data stored in the storage unit by the data storage step is acquired by the communication terminal, the second communication method is stored in the storage unit. A wireless information storing step for storing wireless information for communication;
When returning from the low power consumption state to a normal state that operates with the predetermined power, the communication terminal transferred from the communication terminal to the storage unit and stored in the storage unit is authenticated to the image forming apparatus. An authentication step of authenticating the communication terminal using authentication data for causing the communication terminal to perform authentication. A communication system including an image forming apparatus and a communication terminal capable of communicating with two different wireless communication methods, a first communication method and a second communication method,
The image forming apparatus includes:
Data indicating that the image forming apparatus is operating in a low power consumption state is acquired as data acquired by the communication terminal when the image forming apparatus operates in a low power consumption state where the image forming apparatus operates at a power lower than a predetermined power. Data storage means for storing in the storage unit;
A discriminating means for discriminating whether a communication partner communicating with the first communication method is the communication terminal or an authentication card when operating in the low power consumption state;
When the determining unit determines that the communication partner is the communication terminal and the data stored in the storage unit by the data storage unit is acquired by the communication terminal, the storage unit stores the data in the second communication method. Wireless information storage means for storing wireless information for communication;
When returning from the low power consumption state to the normal state that operates with the predetermined power, authentication data transferred from the communication terminal to the storage unit for authenticating the communication terminal to the image forming apparatus is used. Authentication means for authenticating the communication terminal;
Communication means for communicating with the communication terminal by the second communication method when the communication terminal is authenticated by the authentication means;
The communication terminal is
Data acquisition means for acquiring the data from the image forming apparatus by communicating with the image forming apparatus by the first communication method;
If the data acquired by the data acquisition means indicates that the image forming apparatus is operating in a low power consumption state, wireless information acquisition means for acquiring the wireless information from the image forming apparatus;
And a transfer means for transferring authentication data for authenticating the communication terminal to the image forming apparatus when the wireless information is acquired by the wireless information acquiring means. system.

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