Patent Publication Number: US-2022217242-A1

Title: Apparatus, method of controlling the same, and storage medium

Description:
BACKGROUND OF THE INVENTION 
     Field of the Invention 
     The present invention relates to a processing technique that processes a job received via a communication unit. 
     Description of the Related Art 
     In recent years, in the Bluetooth (registered trademark) Core Specification V4.0, a very low power consumption wireless communication standard called Bluetooth Low Energy (hereinafter referred to as BLE) has been established. In BLE, extended operation using a battery such as a button battery is envisioned. In BLE, a new child node notifies its own existence to a parent node by intermittently broadcasting an advertisement packet. A child node can control the timing of advertisement packet broadcasting and the timing of reception of packets from a parent node, and power consumption is significantly reduced by entering a sleep state during other times. 
     In a case where a parent node is a mobile terminal such as a smart phone and a child node is an image processing apparatus such as a printer, the mobile terminal becomes a central and the image processing apparatus becomes a peripheral. The image processing apparatus, by an advertising communication scheme, broadcasts advertisement packets intermittently, and the mobile terminal can recognize the existence of the image processing apparatus by acquiring the advertisement packets. 
     Here, when the mobile terminal acquires an advertisement packet, it can establish a connection with the image processing apparatus, query the capabilities of the image processing apparatus, and execute a function that the image processing apparatus has. For example, in a case where the image processing apparatus has a print function, and is in a state in which it can execute a job, the mobile terminal can establish a connection with the image processing apparatus, and issue a print job to the image processing apparatus. 
     However, even in a state in which the image processing apparatus cannot execute printing, the image processing apparatus cannot broadcast an advertisement packet while the connection is established between the mobile terminal and the image processing apparatus. For this reason, there is a problem in that while a mobile terminal is in communication with an image processing apparatus, a user of another mobile terminal cannot recognize the existence of the image processing apparatus. 
     SUMMARY OF THE INVENTION 
     The present invention is conceived in view of the foregoing problem, and provides a technique by which it is possible to improve efficiency of usage of a system that implements processing between a plurality of apparatuses. 
     According to one aspect of the present invention, there is provided an apparatus that executes a job, the apparatus comprises: a broadcast unit configured to broadcast a wireless signal prior to establishing a connection by wireless communication with an external apparatus, wherein the wireless signal includes information relating to the apparatus, by which it can be identified whether execution of a job by the apparatus is possible, in a predetermined packet. 
     Further features of the present invention will become apparent from the following description of exemplary embodiments (with reference to the attached drawings). 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a view for illustrating a configuration of MFPs and a mobile terminal. 
         FIGS. 2A and 2B  are perspective views of an MFP. 
         FIG. 3A  is a block diagram for illustrating a control configuration of the MFP. 
         FIG. 3B  is a block diagram for illustrating a control configuration of the mobile terminal. 
         FIG. 4  is a block diagram for illustrating a detailed configuration of a BLE unit. 
         FIGS. 5A to 5C  are views for illustrating timing of broadcasting of advertisement packets. 
         FIGS. 6A to 6D  are views for illustrating a detailed configuration of an advertisement packet. 
         FIG. 7  is a view for illustrating a processing sequence between the mobile terminal and the MFP. 
         FIGS. 8A and 8B  are views for illustrating an example of displaying by a display unit of the MFP. 
         FIG. 9  is a view for illustrating a flow for when advertising is performed. 
     
    
    
     DESCRIPTION OF THE EMBODIMENTS 
     Embodiments of the present invention will be described hereinafter in detail, with reference to the accompanying drawings. Note that the embodiments below do not limit the present invention according to the scope of the claims, and the means for solving in the present invention is not limited to requiring a combination of all features explained in the present embodiment. For identical elements identical reference numerals are given, and detailed explanation therefor is omitted. 
     First Embodiment 
       FIG. 1  is a pattern diagram illustrating an image processing apparatus, and a surrounding environment thereof. 
     In the present embodiment, explanation is given for a system including the image processing apparatus and a terminal device. Exemplary explanation is given using a Multifunction Printer (MFP) as an example of an image processing apparatus in the present embodiment. An MFP  200  is an MFP of an ink-jet method that has a plurality of functions such as a print function, a scanner function (reading function), a copy function, a fax function, or the like. Note that the print method that the MFP  200  uses is not limited to the ink-jet method, and it is possible to use another print method such as a laser beam method. Also, the image processing apparatus is not limited to this, and may have only a print function, may have only a scanner function, and may comprise other functions. 
     The MFP  200  operates as a BLE peripheral which is one short-range wireless communication specification. Also, the MFP  200  can transmit an advertising signal to its periphery without making a network connection with a particular terminal. 
     A mobile terminal  30 , which is a terminal device, operates as a central which is a BLE central node. The mobile terminal  30 , for example, is a terminal that can be carried, and can transmit to the MFP  200  a print job. The mobile terminal  30  may be an information processing apparatus that handles a file that is a printing target such as a cellular phone, a digital camera, a smart phone or the like, but the mobile terminal  30  is not limited to these. The mobile terminal  30 , if positioned within a signal area  20  which is an effective communication range of the MFP  200 , can receive an advertising signal (an advertisement packet) from the MFP  200 . Accordingly, the mobile terminal  30  is able to receive advertising signals of a plurality of the MFP  200  if within the effective communication ranges of a plurality of the MFP  200  (in the case of  FIG. 1, 2  of the MFP  200 ). Also, as a characteristic of BLE, because the MFP  200  can receive a signal strength of an advertising signal that the MFP  200  transmitted, a central can identify an approximate distance to a peripheral. 
     Note that the signal area  20 , which is an effective communication range is a range over which the MFP  200  can communicate, is a communication range in which short-range wireless communication which is of a shorter communication range than that of long-range wireless communication such as Wireless Local Area Network (WLAN) (a shorter communication range than a predetermined distance) is realized. Also, it can be said that the MFP  200  and the mobile terminal  30  function as communication apparatuses, meaning that the apparatuses communicate with each other. 
       FIGS. 2A and 2B  are views for illustrating an outer appearance of the MFP  200 , and in particular,  FIG. 2A  is a perspective view of the MFP  200 , and  FIG. 2B  is a top view of the MFP  200 . 
     An original platen  201  is a transparent base comprised of glass or the like, and is used when an original is placed on it and read by the scanner. An original lid  202  is a lid for making it so that scanning light does not escape to the outside when performing reading by the scanner. A printing sheet insertion port  203  is an insertion port for setting sheets of various sizes as a recording medium. The sheet set in the printing sheet insertion port  203  is conveyed to the printing unit one sheet at a time, a desired print is performed thereon, and it is discharged from a printing sheet discharging port  204 . Also, the MFP  200  comprises a first cassette  209  and a second cassette  210  as other print sheet supply units. For example, if A3 sheets are set in the first cassette  209 , and A4 sheets are set in the second cassette  210 , a user can execute print jobs whose print sizes are A3 and A4 without changing the sheets of the MFP  200 . 
     On an upper portion of the original lid  202 , an operation display unit  205  and an Near Field Communication (NFC) unit  206  are arranged. The operation display unit  205  has a display unit for displaying images, operation menus or the like, 4-direction keys used for cursor movement on the display unit, buttons, and a console unit for executing other various functions. Also, the operation display unit  205  may be comprised by a touch panel. 
     The NFC unit  206  is a unit for performing short-range wireless communication, and is in a location at which a terminal with which the short-range wireless communication is performed is actually caused to approach. The NFC unit  206  can perform communication by a terminal having an NFC communication function being caused to approach within a predetermined distance (approximately 10 cm). A WLAN antenna  207  is an antenna for communicating by WLAN. A BT antenna  208  is an antenna for communicating by Bluetooth and BLE. 
       FIG. 3A  is a block diagram for illustrating a control configuration of the MFP  200 . 
     The MFP  200  comprises a main board  301  for performing main control of the apparatus, a WLAN unit  316  for performing WLAN communication, an NFC unit  317  for performing NFC communication, and a BLE unit  318  for performing Bluetooth communication and BLE communication. 
     In the main board  301 , a Central Processing Unit (CPU)  302  is a system control unit that controls the MFP  200  on the whole. A Read Only Memory (ROM)  303  stores various programs such as control programs that the CPU  302  executes, an embedded operating system (OS) program, or the like. In the present embodiment, software control such as scheduling, task switching or the like is performed under the management of the embedded OS stored in the ROM  303  for control programs stored in the ROM  303 . A Random Access Memory (RAM)  304  is configured by an SRAM (static RAM) memory or the like, and in addition to storing program control variables, setting values that a user registers, and various data such as management data of the MFP  200 , various work buffer regions are arranged. 
     A non-volatile memory  305  is configured by a memory such as a flash memory, and holds data that is stored even when a power source is turned off. Specifically, in this data there is user data such as a FAX telephone number, a communication history, network information, or the like, a list of mobile terminals connected to in the past, and setting information of the MFP  200  such as menu items of a print mode, and inkjet printhead correction information or the like. An image memory  306  is configured by a memory such as a DRAM (dynamic RAM), and stores various data such as image data received via each communication unit, image data processed by an encoding/decoding processing unit  312 , or the like. 
     Note that a memory configuration comprising the various foregoing memories is not limited to this, and it is possible to configure as appropriate the number, characteristics, storage capacities or the like of these in accordance with purpose and objectives. 
     A data conversion unit  307  performs processing such as analysis of page description language (the PDL) data, or the like, conversion from image data to print data, or the like. A reading control unit  308  optically reads an original in accordance with a reading unit  310  configured by a CIS image sensor (e.g., a contact image sensor) or the like, and outputs image data. Specifically, an original is optically read by the reading unit  310 , various image processing such as binarization processing or halftone processing is applied via an image processing control unit (not shown) to an image signal converted into electronic image data, and high definition image data is outputted. 
     An operation unit  309  and a display unit  311  correspond to the operation display unit  205  of  FIG. 2B . The encoding/decoding processing unit  312  performs various processing such as encoding/decoding processing, resizing processing or the like of image data (the JPEG, PNG, or the like) processed by the MFP  200 . A sheet feeding unit  313  holds sheets for printing, and supplies sheets to a printing unit  315 . Here, the sheet feeding unit  313  collectively refers to a plurality of sheet feeding units such as the printing sheet insertion port  203 , the first cassette  209 , and the second cassette  210  of  FIG. 2A . By control from a printing control unit  314 , it is possible to perform sheet feeding from the sheet feeding unit  313  to the printing unit  315 . Also, by the printing control unit  314 , it is possible to control what sheet feeding unit of the plurality of sheet feeding units to perform sheet feeding from. 
     The printing control unit  314  converts image data that is the target of the printing into high definition image data by applying various image processing such as smoothing processing, print density correction processing, and color correction via the image processing control unit (not shown), and outputs to the printing unit  315 . Also, the printing control unit  314  periodically reads various information such as a status of the printing unit  315 , and updates information in the RAM  304 . Specifically, it updates, for example, remaining amounts of ink tanks, print head states, or the like. 
     In the MFP  200  there are the WLAN unit  316 , the NFC unit  317  and the BLE unit  318  as communication units for wireless communication, and it is possible to perform wireless communication in accordance with 3 types of communication specifications (WLAN, NFC, and BLE). Specifically, the WLAN unit  316 , the NFC unit  317 , and the BLE unit  318  are units for realizing communication in compliance with WLAN, NFC and BLE specifications respectively. The BLE unit  318  is a unit that used for both classical Bluetooth and BLE. The WLAN unit  316 , the NFC unit  317 , and the BLE unit  318  are communication units for performing data communication with other devices such as mobile terminals. These communication units convert data into packets and perform packet transmission to other devices. Meanwhile, these communication units convert packets from other external devices into data and transmit the data to the CPU  302 . 
     The WLAN unit  316 , the NFC unit  317 , and the BLE unit  318  are connected to a system bus  322  via bus cables  319 ,  320  and  321  respectively. 
     Note that the foregoing various components  303 - 318  are connected to each other via the system bus  322  which the CPU  302  manages. 
       FIG. 3B  is a block diagram for illustrating a control configuration of the mobile terminal  30 . 
     The mobile terminal  30  comprises a main board  701  for performing main control of the apparatus, a WLAN unit  716  for performing WLAN communication, an NFC unit  717  for performing NFC communication, and a BLE unit  718  for performing classical Bluetooth communication and BLE communication. 
     In the main board  701 , a CPU  702  is a system control unit that controls the mobile terminal  30  on the whole. A ROM  703  stores various programs such as control programs that the CPU  702  executes, an embedded operating system (OS) program, or the like. In the present embodiment, software control such as scheduling, task switching or the like is performed under the management of the embedded OS stored in the ROM  703  for control programs stored in the ROM  703 . A RAM  704  is configured by an SRAM (static RAM) memory or the like, and in addition to storing program control variables, setting values that the user registers, and various data such as management data of the mobile terminal  30 , various work buffer regions are arranged. 
     A non-volatile memory  705  is configured by a memory such as a flash memory, and holds data that is stored even when a power source is turned off. Specifically in such data there is a communication history, user data such as network information, a list of MFPs connected to in the past, and setting information of the mobile terminal  30  such as menu items of a communication mode or the like. An image memory  706  is configured by a memory such as a DRAM (Dynamic RAM), and stores various data such as image data received via each communication unit, image data processed by an encoding/decoding processing unit  712 , or the like. 
     Note that a memory configuration comprising the various foregoing memories is not limited to this, and it is possible to configure as appropriate the number, characteristics, storage capacities or the like of these in accordance with purpose and objectives. 
     A data conversion unit  707  performs processing for data analysis, conversion from image data to job data, or the like. 
     An operation unit  709  is configured by a touch panel, keys, buttons or the like for performing operations on the mobile terminal  30 . A display unit  711  is configuring by an LCD, for example. The encoding/decoding processing unit  712  performs various processing such as encoding/decoding processing, resizing processing or the like of image data (the JPEG, PNG, or the like) processed by the mobile terminal  30 . 
     In the mobile terminal  30  there are the WLAN unit  716 , the NFC unit  717  and the BLE unit  718  as communication units for wireless communication, and it is possible to perform wireless communication in accordance with 3 types of communication specifications (WLAN, NFC, and BLE). Specifically, the WLAN unit  716 , the NFC unit  717 , and the BLE unit  718  are units for realizing communication in compliance with WLAN, NFC and BLE specifications respectively. The BLE unit  318  is a unit that used for both classical Bluetooth and BLE. The WLAN unit  716 , the NFC unit  717 , and the BLE unit  718  are communication units for performing data communication with other devices such MFPs. These communication units convert data into packets and perform packet transmission to other devices. Meanwhile, these communication units convert packets from other external devices into data and transmit the data to the CPU  702 . 
     The WLAN unit  716 , the NFC unit  717 , and the BLE unit  718  are connected to a system bus  722  via bus cables  719 ,  720  and  721  respectively. 
     Note that the various foregoing components  703 - 718  are connected to each other via the system bus  722  which the CPU  702  manages. 
       FIG. 4  is a block diagram for illustrating a detailed configuration of the BLE unit  318  and the BLE unit  718 . Below explanation is given with the BLE unit  318  as an example. 
     Data is transmitted/received between the main board  301  and a microcomputer  403  via the bus cable  321 . By attaching an independent sensor in addition to the bus cable  321  it is possible to transmit/receive data by control other than that of the main board  301 . In the BLE unit  318 , an ADC  402  (Analog-to-Digital Converter) and the microcomputer  403  are connected to the bus cable  321 . 
     A sensor  401  is a device for converting a physical amount of a measurement target into an electrical signal. In the present embodiment, as the sensor  401 , there is a monitoring sensor or a motion sensor for identifying that there is a person in the periphery of the MFP  200 , for example, and a temperature sensor for monitoring the temperature of the MFP  200 . 
     The ADC  402  is analog/digital conversion circuit that converts an analog signal output from the sensor  401  into a digital signal that the microcomputer  403  can process. The microcomputer  403  is a microprocessor that performs wireless communication processing. In the microcomputer  403 , a RAM and a flash memory are comprised. A wireless communication circuit  404  is configured by a device such as a wireless communication chip, a crystal oscillator, an inductor, a condenser, or the like, and performs transmission and reception of data by wireless communication. An operation switch  405  is a switch for turning on and turning off the power of the BLE unit  318 , and the operation switch  405  sends a broadcasting signal by selecting ON. Note that a power of the BLE unit  318  ordinarily operates in cooperation with a power source of the MFP  200 . In a case where a problem occurs in a power supply system of the MFP  200 , it is possible to broadcast independently from the operation of the MFP  200  by turning on the operation switch  405  intentionally by a user operation. A battery  406  is a storage battery such as a button battery. A main body power source  408  is a power source supplied from the main board  301 . A power source circuit  407  is a circuit for performing processing such as a voltage adjustment for efficiently supplying a power from the battery  406 . 
     In this way, the MFP  200  has power sources of 2 systems: the battery  406  and the main body power source  408 . With this, even if the MFP  200  cannot be activated for some reason, or if the power source of the main board  301  is turned off by a power saving function of the main body of the MFP  200 , it is possible to broadcast (i.e., a multi-destination transmission) the advertising signal from the NFC unit  317 . Also, in the BLE unit  318  a non-volatile memory  410  is installed, and by moving information such as operation information, setting information or the like that is stored in the RAM  304  of the main board  301 , it is possible to perform communication alone using this information as necessary. 
       FIGS. 5A to 5C  are views for illustrating an advertising signal that the BLE unit  318  broadcasts to its periphery. 
       FIG. 5A  illustrates a normal advertising signal of the MFP  200 . Tx  508  represents a transmission section of the advertising signal, and by causing transmission circuit to operate, a predetermined packet (e.g., an advertisement packet) explained with  FIGS. 6A to 6D  is transmitted. Rx  509  represents a standby section for waiting for a response from a communication partner (for example, the mobile terminal  30 ) to the advertising signal. Specifically, in the Rx  509 , by turning the power source of a reception circuit on, a state in which reception of a response from a communication partner is possible is switched into. Then, after a predetermined amount of time has elapsed, that is outside of the standby section of the Rx  509 , by turning off the power source of the reception circuit, a state in which a response cannot be received is switched to. One channel A  505  is formed by the Tx  508  and the Rx  509 , and an advertising time  501  is defined by the Tx  508  and the Rx  509  in the channel A  505 . Continuing from the channel A  505 , a channel B  506  and a channel C  507  of similar configuration are comprised. Also, Tx and Rx are repeated by the number of the determined channels. For example, in the BLE standard, channels  37 ,  38  and  39  are allocated for advertisement packet channels, and in the present embodiment, the channel A  505 , the channel B  506 , and the channel C  507  correspond to these channels. 
     An Active section  502  is a section in which transmission and reception is performed by Tx and Rx. A power-saving section  503  is a section in which transmission and reception is not performed by Tx and Rx. The longer the power-saving section  503  is, the more power consumption of the BLE unit  318  can be suppressed. In this way, a predetermined interval from broadcasting the advertising signal until broadcasting the next advertising signal after waiting for a corresponding response for a predetermined amount of time (i.e., the Active section  502  in  FIG. 5A ) is called an advertising interval  504 .  FIG. 5B  and  FIG. 5C  are explained later. 
       FIGS. 6A to 6D  are views for illustrating a detailed configuration of an advertisement packet. 
     The BLE unit  318  performs an initialization process when it enters a power on state, and after that enters an advertising state for transmitting/receiving advertisement packets. When the advertising state is entered, the BLE unit  318  transmits an advertisement packet illustrated in  FIG. 6A  to the periphery in a settable interval (i.e., predetermined interval). The advertisement packet is configured by a 2 byte header  601 , and a payload  602 . The header  601  is a region for storing a type of the packet, information of the size of the payload  602 , or the like. The payload  602  is a region that can store information of the apparatus transmitting the advertising signal, and a predetermined size is allocated for it. In the payload  602 , other than the device name and installation profile information, information relating to the MFP  200  such as the transmission power (a Tx Power  608 ) is stored. In the present embodiment, it is assumed that identifying information by which it can be identified whether the job execution by the image processing apparatus is possible is included. As the identifying information, there is capability information  605 , setting information  606 , and error information  607  which are explained later. In the present embodiment, in the payload  602 , an MFP name  603 , connection-to-MFP information  604 , a NEXT Flag  627 , and the Tx Power  608  are stored. 
     In the payload  602 , a name for identifying an MFP is stored in the MFP name  603 . Information such as a character string for being able to identify an MFP in an office uniquely, for example, is set as this name. The connection-to-MFP information  604  is information for the mobile terminal  30  to perform a connection to the MFP  200  after having received the advertisement packet. If in compliance with a specification of BLE, a protocol data unit (PDU) described in the BLE 4.0 specification is information is for making a connection to the MFP  200 . By transmitting/receiving protocol data PDUs, the mobile terminal  30  is able to perform data communication after establishing a connection with the MFP  200 . Also, establishing a connection other than one for BLE is possible, and for example, by setting information for connecting to the WLAN unit  316  as information for performing a connection to the MFP  200 , the mobile terminal  30  can make a connection with the MFP  200  by WLAN. 
     The Tx Power  608  is information indicating a signal strength of Tx. The MFP  200  can identify a propagation loss from information of the Tx Power  608  and the received signal strength of the received packet, and can make an estimation of the distance to the BLE wireless device from this identified propagation loss. For the capability information  605 , the setting information  606 , and the error information  607  which is state information of the MFP  200 , explanation is given later in detail using  FIG. 6B ,  FIG. 6C  and  FIG. 6D  respectively. 
     Next, using  FIG. 6B , a detailed configuration of the capability information  605  is explained. The capability information  605  is capability information for a job that the MFP  200  can execute. The mobile terminal  30 , when it receives an advertisement packet that the image processing apparatus broadcasted, can identify what kind of functions the MFP  200  has without establishing a connection with the MFP  200  by receiving the capability information  605 . 
     In the present embodiment, as the capability information  605 , there is maker information (hereinafter referred to as a maker  609 ), model number information (hereinafter referred to as a model number  610 ), color information (hereinafter referred to as a color  611 ), and number of inks information (hereinafter referred to as a number of inks  612 ). Also, as the capability information  605  there is supported sheet size information (hereinafter referred to as supported sheet sizes  613 ), information of supported sheet types (hereinafter referred to as supported sheet types  614 ), and information as to whether double-sided printing is possible (hereinafter referred to as double-sided supported  615 ). 
     In the maker  609 , a maker identification (ID) provided for each maker is stored. In the model number  610 , an ID by which a product model of the MFP  200  can be identified uniquely is stored. In the color  611  a flag indicating whether it is a color printer or a monochrome printer is stored. In the number of inks  612  a bit is allocated for each recording material ink color, and the inks that can be mounted can be represented. That is, it is possible to identify the number of inks. For the supported sheet sizes  613 , a bit is allocated for each sheet size, and it is possible to represent the sheet sizes that can be set. For the supported sheet types  614 , a bit is allocated for each sheet type, and it is possible to represent the sheet types that can be set. In the double-sided supported  615  a flag indicating whether or not double-sided printing is possible is stored. In this way, because it is possible to identify the function of the MFP  200  by the capability information  605 , the mobile terminal  30  can determine whether a job for which execution is scheduled can be executed by that MFP. 
     Next, using  FIG. 6C , a detailed configuration of the setting information  606  is explained. The setting information  606  is information set currently in the MFP  200 . The mobile terminal  30 , by receiving the setting information  606 , can identify a current setting state of the MFP  200  without establishing a connection with the MFP  200 . 
     In the present embodiment, as the setting information  606  there is information of a sheet size of the first cassette (hereinafter referred to as the first cassette sheet size  616 ), and information of a sheet size of the second cassette (hereinafter referred to as the second cassette sheet size  617 ). Also, as the setting information  606  there is information of a sheet type of the first cassette (hereinafter referred to as the first cassette sheet type  618 ), and information of a sheet type of the second cassette (hereinafter referred to as the second cassette sheet type  619 ). Furthermore, as the setting information  606  there is information of a priority cassette (hereinafter referred to as a priority cassette  620 ), information of a print mode (hereinafter referred to as a print mode  621 ), and information of a printing speed (hereinafter referred to as a printing speed  622 ). 
     In the first cassette sheet size  616  and the second cassette sheet size  617 , setting values indicating the sizes of sheets set in the first cassette and the second cassette are stored. These setting values are similar to the bits allocated in the supported sheet sizes  613 . In the first cassette sheet type  618  and the second cassette sheet type  619 , setting values indicating the sheet types of sheets set in the first cassette and the second cassette are stored. These setting values are similar to the bits allocated in the supported sheet types  614 . 
     In the priority cassette  620 , a value indicating the cassette that is used preferentially out of the first cassette and the second cassette is stored. In the case where “1” is stored, the first cassette is used preferentially, and in the case where “2” is stored, the second cassette is used preferentially. For the print mode  621 , a value indicating the default print mode is stored. In this value, values indicating various print modes such as “beautiful”, “normal”, and “fast” can be set. For the printing speed  622 , the printing speed in the current print settings is stored. For example, in a case where printing is performed in beautiful mode with A4 sheet size and with normal paper, the estimated number of sheets that can be printed in 1 minute is stored. Note that the printing speed itself may be stored. 
     In this way, the mobile terminal  30  can identify the current setting information of the MFP  200  and notify the user, and therefore can cue to find an MFP that the user desires. Also, the mobile terminal  30  can identify in advance in a case where the MFP has a desired function but the current settings are different, and notify this. Accordingly, a user can recognize that settings should be changed on the operation unit  709  of the MFP in advance, and the possibility that printing is performed with the wrong settings can be prevented is raised. 
     Next, using  FIG. 6D , a detailed configuration of the error information  607  is explained. The error information  607  is information of an error that occurred in the MFP  200 . The mobile terminal  30 , by receiving the error information  607 , can identify that an error occurred on the MFP without establishing a connection with the MFP  200 , and can notify the user. 
     As the error information  607  there is information of a job status (hereinafter referred to as a job status  623 ), information of a job error (hereinafter referred to as a job error  624 ), information of a recoverable error (hereinafter referred to as a recoverable error  625 ), and information of a fatal error (hereinafter referred to as a fatal error  626 ). 
     In the job status  623 , information such as a status of a job that the MFP  200  received is stored. For example, the number of received jobs, the number of received pages, and the number of users that exist in the vicinity of the MFP  200  are stored. By identifying the number of received jobs and the number of received pages, the mobile terminal  30  can estimate (identify) approximately what the waiting time will be in a case where a job is transmitted. Also, for the number of users that exist in the vicinity of the MFP  200 , the number of mobile terminals in the vicinity of the MFP  200  can be estimated (identified) by broadcasting an advertisement packet and counting the number of responses thereto. Note that the number of users may be simply the number of mobile terminals that return responses or may be the number of mobile terminals within a predetermined distance. 
     In the job error  624 , a value indicating content of an error that occurred when a job is received and executed is stored. In the present embodiment, as the job error, it is possible to identify a sheet size mismatch, a sheet type mismatch, an image decoding error, a packet error, a color mismatch, an imposition error, unsupported processing, or other (errors other than the foregoing). An error often occurs in a case where, for example, the job is incorrect, or setting information of the transmitted job and setting information of the MFP  200  do not match. In other words, often these can be cancelled by re-transmitting an appropriate job from the mobile terminal  30 , or by changing a setting of the MFP  200 . In the present embodiment, the bits allocated for each job error can be notified if a plurality of errors occurred. The mobile terminal  30  can identify a job error of the MFP  200  based on the job error  624  and notify the user, and therefore the user can determine whether to use that MFP after cancelling the error, or whether to use another MFP. 
     In the recoverable error  625 , a value indicating an error for which maintenance of the MFP  200  by the user is necessary among the errors that occur on the MFP  200  is stored. In the recoverable error  625 , a value indicating an error is allocated in each bit similarly to the job error  624 . In the present embodiment, as the recoverable error it is possible to identify a conveying unit paper jam, a sheet feeding unit paper jam, sheet tray full, discharging port closed, cover open, an ink outage, ink remaining amount low, and other errors for which maintenance by a user is necessary. By the recoverable error  625 , in not only the mobile terminal  30  of the user that transmitted the job, but also in the mobile terminal  30  of users in the periphery, errors can be identified, and therefore it is possible to enhance the maintainability of the MFP  200 . 
     In the fatal error  626 , a value indicating an error for which maintenance of the MFP  200  by a user is difficult among the errors that occur on the MFP  200  is stored. An error for which maintenance is difficult is an error for which it is necessary to contact a service center, for example, and which cannot be caused to be recovered from by an ordinary user. In the present embodiment, as the fatal error, a waste ink tank full, a printing unit high temperature error, a power source error, and other errors for which maintenance is difficult can be identified. The mobile terminal  30  can identify and notify that a fatal error occurred on the MFP  200  based on the fatal error. For example, the MFP can notify to the mobile terminal  30  that is executing a job that it is not a usage target. 
     Here, Tx transmits when broadcasting an advertising signal, but in the present embodiment, if an error occurs on the MFP  200 , the power source of the reception circuit is kept off, and a response from a communication partner to the advertising signal is not awaited. Specifically, as illustrated in  FIG. 5C , the Rx  509  is eliminated in each channel (channel A-channel C), and only a Tx  512 , a Tx  513 , and a Tx  514  are executed. With this, while configuration is such that the mobile terminal  30  can identify that the MFP  200  cannot execute printing, it is possible to suppress the power consumption of the MFP  200 , and realize power saving. That is, it is possible to reduce the power for turning on the power source of the reception circuit. In the present embodiment, if the fatal error  626  is in the error information  607 , Rx is not executed. This is because there is no meaning in receiving a response from the mobile terminal  30  in a case where a fatal error occurs even considering from the side of management of the MFP  200 . Note that in cases of the job error  624 , the recoverable error  625  or the like, and not just the fatal error  626 , configuration may be taken so as to not execute Rx because a job cannot be executed until the error is cancelled. 
     In this way, the mobile terminal  30  can identify a current state of the MFP  200  by receiving an advertisement packet in which information of the capability information  605 , the setting information  606 , the error information  607  or the like of the MFP  200  is stored. 
     Note that the configurations illustrated in  FIGS. 5A to 5C  are only examples, and it is possible to store arbitrary data in an advertisement packet and broadcast it outside of the content illustrated in  FIGS. 5A to 5C . For example, it is possible to arrange the NEXT Flag  627  illustrated in  FIG. 6A . The NEXT Flag  627  represents broadcasting information that could not be fully stored in the advertisement packet of this time in a subsequent advertisement packet. Also, information such as a bit that represents a mode for transmitting an arbitrary character string, or the like, and not just that of a predetermined format may be the arranged. 
       FIG. 7  is a view for illustrating a processing sequence between the mobile terminal  30  and the MFP  200  from advertising to job reception to job completion. 
     In  FIG. 7 , the mobile terminal  30  is an initiator that stands by for an advertisement packet from an advertiser in the periphery. Here, the MFP  200  is an advertiser that executes an advertising event of transmitting an advertisement packet in the advertising interval  504 . Here, the set of the Tx  508  and the Rx  509  illustrated in  FIG. 5A  correspond to advertising (step S 701 -step S 703 ). By the mobile terminal  30  receiving the advertisement packet ( FIG. 6A ) from the MFP  200 , the mobile terminal  30  can identify capabilities and an error state of the MFP  200 . 
     If one of the MFP  200  that is suitable for executing the job exists, the mobile terminal  30  transmits CONNECT_REQ which is a request for transitioning to a connection event for making a network connection (step S 704 ). When the MFP  200  receives CONNECT_REQ, it makes preparations to transition to the connection event. By the BLE unit  318  and the BLE unit  718  notifying LE Connection Complete to the main board  301  and the main board  701  respectively, the mobile terminal  30  and the MFP  200  change to master and slave respectively (step S 705  and step S 706 ). 
     After transitioning to the connection event, the slave MFP  200  establishes a connection with the mobile terminal  30  which is the master. Note that in the BLE standard, the master can form a star-type topology with slaves [1: many]. 
     The MFP  200 , after changing to slave, does not broadcast advertisement packets to the mobile terminal  30 . For this reason, mobile terminals in the periphery other than the mobile terminal  30  that established the connection with the MFP  200  cannot identify information regarding the MFP  200  via advertising. In contrast to this, in the present embodiment, the mobile terminal  30 , by receiving an advertisement packet, can identify capabilities and an error state of the MFP  200  prior to establishing a connection with the MFP  200 . Accordingly, it is possible to suppress the mobile terminal  30  establishing a connection with an MFP  200  that cannot execute the job, and it is possible for other terminal devices to identify via advertising information relating to the MFP  200 . 
     In the mobile terminal  30 , the main board  701  transmits job data of a print job to the BLE unit  718  (step S 707 ). For the job data here, a print job main body in which image data is embedded may be transmitted, and information of a pointer to a print job may be notified. The BLE unit  718  of the mobile terminal  30  transmits job data of a print job to the BLE unit  318  (step S 708 ). Note, in this embodiment, if pointer information (job information) is transmitted, job data of the print job is transmitted to the BLE unit  318  thereafter, but limitation is not made to this. Configuration may be taken such that the print job main body is transmitted by communication means other than BLE, and configuration may be taken such that, for example, it is transmitted using the WLAN unit  316  which can communicate in a wider range than BLE. In the present embodiment, the print job main body or pointer information is transmitted as information relating to the job. 
     In the MFP  200 , the BLE unit  318  transmits to the main board  301  received job data (step S 709 ). The main board  301  notifies job completion to the BLE unit  318  when it receives the job data (step S 710 ). The timing of notification of job completion may be after the operation of the job completes, or may be the timing at which the reception of job data ends, or may be the timing at which the pointer to the job is notified. Note that if the pointer to the job is notified, for example, the actual data of the job may be obtained using the WLAN unit  316 . 
     In the MFP  200 , the BLE unit  318  notifies the received job completion to the BLE unit  718  of the mobile terminal  30  (step S 711 ). The BLE unit  718  notifies the received job completion to the main board  701  (step S 712 ). 
     After that, the mobile terminal  30  and the MFP  200  respectively return to initiator and advertiser, and the MFP  200  resumes advertising (step S 713 ). 
     As explained using the sequence of  FIG. 7 , when the connection event is transitioned to, the advertiser ceases to be able to broadcast advertisement packets. For this reason, the less the connection event occurs, the more mobile terminals in the periphery other than the mobile terminal  30  that established the connection event with the advertiser can receive advertisement packets from the advertiser. Compared to cases in which information relating to the MFP  200  is received after transitioning to the connection event as is conventional, it is possible to notify information relating to the MFP  200  to the mobile terminal only with an advertisement packet broadcast before the connection event. Accordingly, the MFP  200  and the mobile terminal  30  respectively can suppress electric power consumption due to the establishment of the connection in cases where the print job cannot be executed, and the number of steps for cancellation after connecting can be reduced. Also, if there exists a plurality of the mobile terminal  30  in the effective communication range of the MFP  200 , it is possible for all of the mobile terminals  30  in the effective communication range to identify a state of the MFP  200  without establishing a connection with the MFP  200 . 
     Using  FIGS. 8A and 8B , explanation is given of an example of transmitting a job after searching for the MFP  200  from the mobile terminal  30 .  FIGS. 8A and 8B  are an example of display screens displayed in the display unit  311  of the mobile terminal  30 . 
     The mobile terminal  30 , for power consumption reduction, is not put in a state in which it can receive BLE advertisement packets continuously. If a user is trying to print, that is if the user is trying to transmit a print job from the mobile terminal  30 , the user activates a predetermined application on the mobile terminal  30 . The predetermined application displays an application screen illustrated in  FIG. 8A  on the display unit  311 . This predetermined application has a function of searching for an MFP meeting a desired condition. In the present embodiment, the application screen that the application displays on the mobile terminal  30  has check-boxes for a print mode (“color”), sheet size (“A4 size or greater”), and printing speed (“15 PPM or greater” (the number of sheets that can be printed in one minute)) as conditions for searching for the MFP. 
     For example, in the case where a print job is an A4 size and there are a large number of sheets, the user instructs the search after having checked the check-boxes for “A4 size or greater” and printing speed of “15 PPM or greater”. With this, the BLE unit  718  of the mobile terminal  30  activates, and a state in which advertisement packets in the periphery can be received is set. 
     Then, the mobile terminal  30  identifies the state of the MFP  200  in the periphery based on the capability information  605 , the setting information  606 , and the error information  607  when it receives an advertisement packet. Then, as is illustrated in  FIG. 8B , a notification screen indicating that MFPs were found is displayed in the display unit  311 . Here, the found MFP names, respective statuses, approximate distances from the mobile terminal  30 , and a connection button  801  for instructing a connection in a case where the MFP  200  is connected are displayed. In this way, in the present embodiment, the mobile terminal  30  can confirm states of a plurality of the MFP  200  by the advertisement packets. 
     The CPU  702  of the mobile terminal  30 , as described above, can identify a state of the found MFPs by analyzing the received advertisement packets. The mobile terminal  30  may be configured to cause the display as illustrated in  FIG. 8B  to change based on the identified results. For example, because the printer A has a paper jam error, it cannot execute a print job even if it is connected to, and so configuration is such that the connection button  801  is not displayed. Note that the connection button  801  may be grayed out, or displayed so that it cannot be selected. 
     By pressing the connection button  801 , it is possible to execute a print job by transitioning to a sequence from step S 704  of  FIG. 7 . In this way, the mobile terminal  30  that executes the print job can transmit a print job having filtered out the MFPs that satisfy the condition from out of the MFPs in the periphery. Because the connection event is not transitioned to when filtering out the MFPs that satisfy the condition from out of the MFPs in the periphery, the reception of advertisement packets by other mobile terminals is not impeded. 
       FIG. 9  is a flowchart for illustrating advertisement packet transmission processing. Note that processing that this flowchart illustrates is realized by the CPU  302  of the MFP  200  reading and executing a program stored in the ROM  303 . 
     In step S 902 , the CPU  302  performs preparation for broadcasting an advertisement packet. Here, data necessary for generating the payload  602  is obtained from the main board  301 . When the advertisement packet is generated, the CPU  302 , in step S 903 , broadcasts the advertisement packet via the BLE unit  318 . 
     In step S 904 , the CPU  302  determines whether or not there is an error in the MFP  200 . This error is the job error  624 , the recoverable error  625 , or the fatal error  626  of  FIG. 6D , for example. If the result of the determination is that there is an error (YES in step S 904 ), the CPU  302 , in step S 905 , determines whether or not the error that occurs is an error for which there is a possibility that it will be cancelled by notifying the user. In the case in which the job error  624  or the recoverable error  625  occur, there is a possibility that the user will perform a recovery operation if the content thereof is notified. Accordingly, in the case of these errors, it is determined that the error has a possibility of being cancelled by notification of the user. On the other hand, in the case where the fatal error  626  occurs, it is determined that the error does not have the possibility of being cancelled by notification of the user because the user cannot resolve the error. 
     If the result of the determination is that the error has the possibility of being cancelled by notification of the user (YES in step S 905 ), the CPU  302 , in step S 906 , executes the Rx  509  as in  FIG. 5A . Meanwhile, if the result of the determination is that the error does not has the possibility of being cancelled by notification of the user (NO in step S 905 ), the CPU  302 , in step S 907 , does not execute the Rx  509  as in  FIG. 5C . In other words, the execution of the Rx  509  is prohibited. By controlling in this way, it is possible to suppress the power consumption by omitting Rx when an error that the user cannot resolve occurs. Also, it is possible to explicitly notify the user that the MFP cannot be used. 
     In step S 908 , the CPU  302  determines whether or not there is data that does not fit in the advertisement packet of this time. If there is data that does not fit in the advertisement packet (YES in step S 908 ), the processing returns to step S 902 , and the CPU  302  transmits a subsequent advertisement packet using the NEXT Flag  627 . Specifically, as is illustrated in  FIG. 5B , as the advertisement packet, transmission is divided over Tx  1  ( 510 ) and Tx  2  ( 511 ) which are consecutive and are associated by the NEXT Flag  627 . By configuring in this way, even in the case of additional information, advertising is performed divided over a plurality of times, and the influence on mobile terminals in the periphery is low compared to in the case where the connection event is performed. 
     Meanwhile, if the data does not fit in the advertisement packet (NO in step S 908 ), the CPU  302 , in step S 909 , determines whether or not there is an advertising interrupt instruction. If there is no interrupt instruction (NO in step S 909 ), the processing returns to step S 903 . On the other hand, if there is an interrupt instruction (YES in step S 909 ), processing terminates. 
     As explained above, by the first embodiment, the mobile terminal  30 , by receiving an advertisement packet, can identify capabilities and an error state of the MFP  200  prior to establishing a connection with the MFP  200 . Accordingly, it is possible to suppress the mobile terminal  30  establishing of a connection with one of the MFP  200  that cannot execute the job, and it is possible for other terminal devices to identify via advertising information relating to the MFP  200 . With this it is possible to suppress the mobile terminal establishing unnecessary connections to image processing apparatuses, and it is possible to make the time in which the mobile terminal establishes a connection with the image processing apparatus shorter. For this reason, when a plurality of mobile terminal users are using an image processing apparatus, the existence of the image processing apparatus becomes easier to recognize. 
     Second Embodiment 
     In the second embodiment, explanation is given for an example in which the power source that drives the BLE unit  318  is switched. When an event such as an error occurs in the MFP  200 , there are cases in which the power source cannot be input. At that time, if the BLE unit  318  is operating in the main body power source  408 , an advertisement packet cannot be broadcast. In the present embodiment, if an event such as an error occurs and the power source cannot be input, the battery  406  is switched to so that it is possible to broadcast advertisement packets. The BLE unit  318  may be implemented to be able to run for several months by a button battery in order to have very low power consumption. By configuring in this way, even if the power source is not input to the MFP  200 , a state of the MFP  200  can be notified to the mobile terminal  30 . Also, configuration may be taken such that a battery is driven so as to inactivate the power source of the main board  301  or the main body power source  408  for power saving and not just in cases of errors. 
     Here, for the determination to switch to the battery  406 , for example when the microcomputer  403  of the BLE unit  318  monitors a state of the MFP  200 , the power source is switched from the main body power source  408  to the battery  406  if a predetermined event occurs. 
     Other Embodiments 
     In the above described embodiments, as information of the image processing apparatus, it is assumed that capability information, setting information, and error information is included as an advertisement packet, but limitation is not made to this, and it is possible to configure to have one or more of these pieces of information. Also, it is possible to have other information. For example, if advertisement packets only include the capability information, a mobile apparatus can identify an image processing apparatus that does not have a capability for executing a print job. 
     Also, in the above described embodiments, explanation was given for an example of a print job as a job that is a processing target, but limitation is not made to this. For example, the MFP  200  may function as a network scanner, an Internet facsimile or the like. For this reason, it is possible to broadcast advertisement packets including information related to these functions (capability information or the like), and to receive various types of jobs such as scan jobs. 
     In the above described embodiment, if a particular error occurs, the reception circuit power source is kept off, and a response from a communication partner to an advertising signal is not awaited, but limitation is not made to this. In other words, configuration may be taken such that the reception circuit is on in the standby section even if a particular error occurs. 
     Embodiment(s) of the present invention can also be realized by a computer of a system or apparatus that reads out and executes computer executable instructions (e.g., one or more programs) recorded on a storage medium (which may also be referred to more fully as a ‘non-transitory computer-readable storage medium’) to perform the functions of one or more of the above-described embodiment(s) and/or that includes one or more circuits (e.g., application specific integrated circuit (ASIC)) for performing the functions of one or more of the above-described embodiment(s), and by a method performed by the computer of the system or apparatus by, for example, reading out and executing the computer executable instructions from the storage medium to perform the functions of one or more of the above-described embodiment(s) and/or controlling the one or more circuits to perform the functions of one or more of the above-described embodiment(s). The computer may comprise one or more processors (e.g., central processing unit (CPU), micro processing unit (MPU)) and may include a network of separate computers or separate processors to read out and execute the computer executable instructions. The computer executable instructions may be provided to the computer, for example, from a network or the storage medium. The storage medium may include, for example, one or more of a hard disk, a random-access memory (RAM), a read only memory (ROM), a storage of distributed computing systems, an optical disk (such as a compact disc (CD), digital versatile disc (DVD), or Blu-ray Disc (BD)™), a flash memory device, a memory card, and the like. 
     While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. The scope of the following claims is to be accorded the broadest interpretation so as to encompass all such modifications and equivalent structures and functions. 
     This application claims the benefit of Japanese Patent Application No. 2015-026970, filed Feb. 13, 2015, which is hereby incorporated by reference herein in its entirety.