Patent Publication Number: US-10778863-B2

Title: Operation input system, electronic device and mobile terminal

Description:
This non-provisional application claims priority under 35 U.S.C. § 119(a) on Patent Application No. 2013-266463 filed in JAPAN on Dec. 25, 2013, the entire contents of which are hereby incorporated herein by reference. 
     FIELD OF THE INVENTION 
     The present invention relates to an operation input system, electronic device, a mobile terminal and an operation input method, and, more specifically, relates to an operation input system which links electronic device such as an image forming apparatus with a mobile terminal to enable operation input using the mobile terminal, electronic device, a mobile terminal and an operation input method. 
     BACKGROUND OF THE INVENTION 
     An MFP (Multi-Function Peripheral: digital multi-function peripheral), which is one of image forming apparatuses, is provided with a plurality of functions such as a printer function, a copying function, a facsimile function and a scanner function. Such an image forming apparatus commonly has a liquid crystal display provided with a touch panel function and receives operation input from a user. Moreover, some of these image forming apparatuses are provided with a preview display function for displaying a print image (print preview image) on a screen of the liquid crystal display before printing image data. By using this preview display function, the user is able to confirm a printed matter of the image data on the screen before actually performing print output, and, in addition, is able to perform editing and the like on the screen in a case where the print image on the screen is different from desired one. 
       FIG. 13A  through  FIG. 13E  are diagrams explaining a preview display function in a conventional image forming apparatus. In the diagrams,  100 ,  101 ,  102 ,  103  and  104  denote a preview screen, an edit button, a screen of various edit menus, an OK button and a footer, respectively. When a user performs a predetermined operation for the image forming apparatus, the image forming apparatus causes a touch panel screen thereof to display the preview screen  100 . Then, a print preview image of image data is displayed on this preview screen  100 . 
     First, the user sees the preview screen  100  to select a page to be edited ( FIG. 13A , S 101 ). Here, “Page 1” is selected by a touch operation of the user. Next, when the user presses (touches) the edit button  101  displayed on the preview screen  100  ( FIG. 13B , S 102 ), the image forming apparatus switches the touch panel screen and displays the screen of various edit menus  102  on the touch panel screen ( FIG. 13C , S 103 ). In this screen of various edit menus  102 , edit items, for example, such as double-side setting, page aggregation, punch setting, header setting, blank sheet skip, book printing, footer setting, background pattern setting, and staple are displayed so as to be selectable by the user. 
     Then, when the user selects a desired edit item from the screen of various edit menus  102  at S 103  above and further presses the OK button  103 , edited content of the this edit item is reflected in the print preview image ( FIG. 13D , S 104 ). Here, the “footer setting” is selected by the touch operation of the user, and a date is able to be inserted in a footer. 
     Then, the image forming apparatus switches the touch panel screen to display the preview screen  100  on the touch panel screen again, but the edited content at S 104  above is reflected in the preview screen  100 . That is, in the case of this example, the date is inserted in the footer  104  of the “Page 1” in the preview screen  100  ( FIG. 13E , S 105 ). Note that, in a case where editing is performed also for other “Page 2”, “Page 3”, . . . , processing from S 101  is performed repeatedly. 
     On the other hand, an electronic blackboard which enables handwriting input by a finger of a user or a stylus by using a large-sized liquid crystal display and a touch panel has been put into practical use. 
       FIG. 14A  through  FIG. 14D  are diagrams explaining a handwriting input function in a conventional electronic blackboard. In the diagrams,  110 ,  111 ,  112  and  113  denote a handwriting input screen, various setting change buttons, a various setting change screen and a handwriting input image, respectively. When a user performs a predetermined operation for the electronic blackboard, the electronic blackboard causes the handwriting input screen  110  to display the various setting change button  111 . Note that, this handwriting input screen  110  allows a touch operation, and is able to recognize a coordinate and a trace input by a finger of the user or a stylus to display as a handwriting input image. 
     First, when the user presses (touches) the various setting change button  111  displayed on the handwriting input screen  110  ( FIG. 14A , S 111 ), the electronic blackboard displays the various setting change screen  112  on the handwriting input screen  110  ( FIG. 14B , S 112 ). In this various setting change screen  112 , for example, “stylus type”, “stylus size”, “stylus color” and the like are displayed so as to be selectable by the user. With the “stylus type”, a shape of a stylus tip is able to be set as a round shape, a square shape, a triangular shape or the like. With the “stylus size”, a size of the stylus is able to be set as thick, normal, thin or the like. With the “stylus color”, a color of the stylus is able to be set as black, red, green or the like. 
     Then, when the user selects desired setting from the various setting change screen  112  at S 112  above and thereafter presses the various setting change button  111  to close the various setting change screen  112  ( FIG. 14C , S 113 ), the electronic blackboard reflects the setting selected by the user at S 112  in the handwriting input image  113  by the finger of the user or the stylus ( FIG. 14D , S 114 ). For example, in a case where setting of the stylus is set as “round shape, thick, red color”, the handwriting input image  113  input by the user to the handwriting input screen  110  by the finger or the stylus is displayed so as to be “round shape, thick, red color”. 
     However, for the operation input explained in  FIG. 13A  through  FIG. 13E  and  FIG. 14A  through  FIG. 14D  above, screen transition occurs a plurality of times, and there is a problem that user convenience is poor. Moreover, each time the number of functions increases, hierarchy becomes deeper, and the number of times of operations increases until the user reaches a required function, so that there is a problem that a burden on the user is large, as well. 
     Against this, technologies by which electronic device such as an image forming apparatus or an electronic blackboard is linked with a mobile terminal such as a smart phone to improve user convenience are variously proposed. For example, in Japanese Laid-Open Patent Publication No. 2012-89161, a system composed of an image forming apparatus, a server and a mobile terminal is described. According to this, when the mobile terminal is held over the server, the server performs user authentication, and generates menu information corresponding to an execution state of the image forming apparatus to transmit to the mobile terminal. The mobile terminal performs selection of a desired service and a set value from among the menu information acquired from the server, and is held over the server again. The server acquires selection response information from the mobile terminal, and controls the image forming apparatus so as to execute the service designated by this information. 
     However, by the invention described in Japanese Laid-Open Patent Publication No. 2012-89161 above, the image forming apparatus is able to be controlled corresponding to operation input from the mobile terminal, but, due to necessity of being through the server, a user is not able to know how content input from the mobile terminal is being reflected in the image forming apparatus. 
     SUMMARY OF THE INVENTION 
     The present invention has been made in view of circumstances as described above, and aims to provide an operation input system which links electronic device such as an image forming apparatus with a mobile terminal and eliminates screen transition of the electronic device so that a user is able to perform various operation input while confirming operation content from the mobile terminal on a screen of the electronic device, electronic device, a mobile terminal and an operation input method. 
     An object of the present invention is to provide an operation input system, comprising an electronic device having a display portion and a mobile terminal capable of near distance wireless communication with the electronic device, wherein the electronic device is provided with a transmitting portion which, when proximity of the mobile terminal is detected in a state of displaying a specific screen on the display portion, transmits operation input information associated with the specific screen in advance to the mobile terminal, the mobile terminal is provided with a display portion which displays an operation input screen based on the operation input information transmitted from the electronic device, and a transmitting portion which transmits operation content instructed by a user from the operation input screen to the electronic device, and the electronic device is provided with an updating portion which updates the specific screen in accordance with the operation content transmitted from the mobile terminal. 
     Another object of the present invention is to provide the operation input system, wherein when connection of the near distance wireless communication with the mobile terminal is established, the electronic device establishes connection of other wireless communication capable of longer-distance wireless communication than the near distance wireless communication with the mobile terminal. 
     Another object of the present invention is to provide the operation input system, wherein as the operation input information, the transmitting portion of the electronic device transmits ID information of an operation input item associated with the specific screen in advance to the mobile terminal, the mobile terminal is provided with a storage portion in which operation input screen information associated with the ID information of the operation input item is stored, and the display portion of the mobile terminal displays the operation input screen in accordance with the operation input screen information stored in the storage portion. 
     Another object of the present invention is to provide the operation input system, wherein as the operation input information, the transmitting portion of the electronic device transmits operation input screen information including ID information of an operation input item associated with the specific screen in advance to the mobile terminal, and the display portion of the mobile terminal displays the operation input screen in accordance with the operation input screen information. 
     Another object of the present invention is to provide the operation input system, wherein the operation input item is set by the user in advance. 
     Another object of the present invention is to provide the operation input system, wherein in a case where the electronic device is an image forming apparatus, the specific screen is a preview screen, and the operation input item is an item concerning editing of a print preview image displayed on the preview screen. 
     Another object of the present invention is to provide the operation input system, wherein in a case where the electronic device is an electronic blackboard, the specific screen is a handwriting input screen, and the operation input item is an item concerning editing of a handwriting input image displayed on the handwriting input screen. 
     Another object of the present invention is to provide an electronic device having a display portion and capable of near distance wireless communication with a mobile terminal, wherein the electronic device is provided with a transmitting portion which, when proximity of the mobile terminal is detected in a state of displaying a specific screen on the display portion, transmits operation input information associated with the specific screen in advance to the mobile terminal, a receiving portion which receives operation content instructed by a user for the operation input information from the mobile terminal, and an updating portion which updates the specific screen in accordance with the operation content received by the receiving portion. 
     Another object of the present invention is to provide a mobile terminal capable of near distance wireless communication with an electronic device having a display portion, wherein the mobile terminal is provided with a receiving portion which, when coming close to the electronic device in a state of having a specific screen displayed on the display portion, receives ID information of an operation input item associated with the specific screen in advance from the electronic device, a storage portion which stores operation input screen information associated with the ID information of the operation input item, a display portion which displays an operation input screen in accordance with the operation input screen information stored by the storage portion, and a transmitting portion which transmits operation content instructed by a user from the operation input screen to the electronic device, and causes the specific screen of the electronic device to be updated in accordance with the operation content transmitted by the transmitting portion. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a diagram showing an exemplary configuration of an operation input system according to the present invention; 
         FIG. 2  is a block diagram showing an exemplary configuration of an operation input system according to a first embodiment of the present invention; 
         FIG. 3A  and  FIG. 3B  are flowcharts explaining exemplary processing of an image forming apparatus shown in  FIG. 2 ; 
         FIG. 4  is a flowchart explaining exemplary processing of a mobile terminal shown in  FIG. 2 ; 
         FIG. 5A  through  FIG. 5C  are diagrams showing one example of screen transition; 
         FIG. 6  is a diagram showing one example of a possible and impossible combination table; 
         FIG. 7  is a flowchart explaining exemplary processing of an image forming apparatus according to a second embodiment of the present invention; 
         FIG. 8  is a diagram showing one example of a WiFi pairing setting screen displayed on the image forming apparatus; 
         FIG. 9  is a block diagram showing an exemplary configuration of an operation input system according to a third embodiment of the present invention; 
         FIG. 10A  through  FIG. 10C  are diagrams explaining exemplary processing of the operation input system according to the third embodiment of the present invention; 
         FIG. 11A  through  FIG. 11C  are diagrams explaining another exemplary processing of the operation input system according to the third embodiment of the present invention; 
         FIG. 12A  through  FIG. 12D  are diagrams explaining still another exemplary processing of the operation input system according to the third embodiment of the present invention; 
         FIG. 13A  through  FIG. 13E  are diagrams explaining a preview display function in a conventional image forming apparatus; and 
         FIG. 14A  through  FIG. 14D  are diagrams explaining a handwriting input function in a conventional electronic blackboard. 
     
    
    
     PREFERRED EMBODIMENTS OF THE INVENTION 
     Description will hereinafter be given for preferred embodiments according to an operation input system, electronic device, a mobile terminal and an operation input method of the present invention with reference to accompanying drawings. 
       FIG. 1  is a diagram showing an exemplary configuration of an operation input system according to the present invention, and  1  denotes electronic device and  2  denotes a mobile terminal in the diagram. The electronic device  1  has a display portion such as a liquid crystal display and is able to be exemplified, for example, as an image forming apparatus and an electronic blackboard explained in  FIG. 13A  through  FIG. 13E  and  FIG. 14A  through  FIG. 14D  above, and the like. In addition, the mobile terminal  2  may be a tablet terminal, for example, including a smart phone and a mobile phone. The electronic device  1  and the mobile terminal  2  are able to be connected with each other by near distance wireless communication (also referred to as short distance wireless communication), for example, such as NFC (Near Field Communication). 
     First Embodiment 
       FIG. 2  is a block diagram showing an exemplary configuration of an operation input system according to a first embodiment of the present invention. The system of this example is composed of an image forming apparatus  1   a  which is one example of the electronic device  1  and the mobile terminal  2  capable of near distance wireless communication with the image forming apparatus  1   a . The image forming apparatus  1   a  is able to be exemplified as an MFP (digital multi-function peripheral) having a plurality of functions such as a printer function, a copying function, a facsimile function and a scanner function, but may be a printer or a copier having a single function. 
     The image forming apparatus  1   a  is provided with a document reading portion  11   a  which optically reads a document image to input image data, an image forming portion  12   a  which forms an image based on the image data, an image processing portion  13   a  which applies various image processing to the image data, an operation display portion  14   a  which has a touch panel, a control portion  15   a  composed of a CPU controlling operations of the image forming apparatus  1   a , a memory and the like, a storage portion  16   a  such as a hard disk or a semiconductor memory, an operation input portion  17   a  which includes a numeric key pad and various operation keys, a wireless LAN (Local Area Network)-I/F (interface)  18   a  which performs wireless LAN communication such as WiFi with the mobile terminal  2 , and a near distance wireless communication portion  19   a  which performs near distance wireless communication such as NFC with the mobile terminal  2 . 
     The mobile terminal  2  is provided with a near distance wireless communication portion  21  which performs near distance wireless communication such as NFC with the image forming apparatus  1   a , a storage portion  22  such as a semiconductor memory, a wireless LAN-I/F  23  which performs wireless LAN communication such as WiFi with the image forming apparatus  1   a , a control portion  24  composed of a CPU controlling operations of the mobile terminal  2 , a memory and the like, an operation display portion  25  which has a touch panel, and a photographing portion  26  composed of an imaging element such as a CCD (Charge Coupled Device). 
     In the present embodiment, the image forming apparatus is linked with the mobile terminal and screen transition of the image forming apparatus is eliminated so that a user is able to perform various operation input while confirming operation content from the mobile terminal on a screen of the image forming apparatus. For such a configuration, the image forming apparatus  1   a  is provided with a transmitting portion which, when proximity of the mobile terminal  2  is detected in a state of displaying a specific screen on the operation display portion  14   a  (corresponding to a display portion of the electronic device of the present invention), transmits operation input information associated with the specific screen in advance to the mobile terminal  2 . This transmitting portion corresponds to a transmitting portion of the electronic device of the present invention and is realized by the control portion  15   a  and the near distance wireless communication portion  19   a  of the image forming apparatus  1   a . More specifically, when the user holds the mobile terminal  2  over the operation display portion  14   a  of the image forming apparatus  1   a , the near distance wireless communication portion  19   a  of the image forming apparatus  1   a  detects proximity of the mobile terminal  2 , and the near distance wireless communication portion  19   a  of the image forming apparatus  1   a  and the near distance wireless communication portion  21  of the mobile terminal  2  have a communication protocol, for example, based on NFC established therebetween to be connected so as to allow communication with each other. 
     Moreover, examples of the specific screen displayed on the operation display portion  14   a  of the image forming apparatus  1   a  include preview screens shown in  FIG. 13A  through  FIG. 13E  above. Further, the operation input information transmitted from the image forming apparatus  1   a  to the mobile terminal  2  is ID information of an operation input item associated with a preview screen in advance or operation input screen information including the ID information of the operation input item associated with the preview screen in advance. As the operation input item, edit items such as double-side setting, page aggregation, punch setting, header setting, blank sheet skip, book printing, footer setting, background pattern setting and staple may be set as they are as shown in  FIG. 13A  through  FIG. 13E , or only the edit item which is frequently used by the user among these edit items may be set selectively. Specifically, for example, only double-side setting, header setting and footer setting are associated with the preview screen in advance. In addition, the ID information of the operation input items is information for discriminating these operation input items and notifying operation content according to the operation input items (such as operation code information). The image forming apparatus  1   a  is controlled so as to execute the operation content notified with this ID information. Moreover, the operation input screen information in this example is screen data for displaying the above-described operation input items on the screen. 
     The mobile terminal  2  is provided with a receiving portion which receives, when coming close to the image forming apparatus  1   a  in a state of having a preview screen displayed on the operation display portion  14   a , operation input information associated with a preview screen in advance from the image forming apparatus  1   a , a display portion which displays an operation input screen based on the received operation input information, and a transmitting portion which transmits operation content (that is, ID information) instructed by the user from the operation input screen to the image forming apparatus  1   a . Note that, this display portion corresponds to a display portion of the mobile terminal of the present invention and is realized by the operation display portion  25  of the mobile terminal  2 . Moreover, the receiving portion and the transmitting portion correspond to a receiving portion and a transmitting portion of the mobile terminal of the present invention, and are realized by the control portion  24  and the near distance wireless communication portion  21  of the mobile terminal  2 . Here, as a method for displaying the operation input screen on the operation display portion  25  of the mobile terminal  2 , two different methods are considered according to content of the operation input information transmitted from the image forming apparatus  1   a.    
     First, as a first method, description will be given for a case where the operation input information is ID information of an operation input item. In this case, the mobile terminal  2  is provided with a storage portion in which operation input screen information associated with the ID information of the operation input item is stored, and the operation display portion  25  displays an operation input screen in accordance with the operation input screen information stored by this storage portion. Note that, this storage portion corresponds to a storage portion of the mobile terminal of the present invention and is realized by the storage portion  22  of the mobile terminal  2 . That is, according to the first method, the image forming apparatus  1   a  transmits the ID information of the operation input item associated with the preview screen in advance to the mobile terminal  2 . The operation input screen information is stored in the storage portion  22  of the mobile terminal  2  in association with the ID information of the operation input item, and the operation display portion  25  displays an operation input screen as shown in  FIG. 5B  described below in accordance with the operation input screen information stored in the storage portion  22 . 
     Further, as a second method, description will be given for a case where operation input information is operation input screen information including ID information of an operation input item. In this case, the operation display portion  25  of the mobile terminal  2  displays an operation input screen in accordance with the operation input screen information received from the image forming apparatus  1   a . That is, according to the second method, the operation input screen information including the ID information of the operation input item associated with the preview screen in advance is stored in the storage portion  16   a  of the image forming apparatus  1   a , and this operation input screen information is transmitted to the mobile terminal  2 . Then, the operation display portion  25  of the mobile terminal  2  displays the operation input screen in accordance with the operation input screen information from the image forming apparatus  1   a . Note that, when a screen resolution of the mobile terminal  2  is not known in the image forming apparatus  1   a  side, the image forming apparatus  1   a  may obtain the screen resolution of the mobile terminal  2  when being connected to the mobile terminal  2  through near distance wireless communication so as to be able to convert the operation input screen information as appropriate according to this screen resolution. 
     Furthermore, the image forming apparatus  1   a  is provided with a receiving portion which receives the operation content (ID information) instructed by the user from the mobile terminal  2  and an updating portion which updates the preview screen in accordance with the received operation content. Note that, this receiving portion corresponds to a receiving portion of the electronic device of the present invention and is realized by the control portion  15   a  and the near distance wireless communication portion  19   a  of the image forming apparatus  1   a . Moreover, the updating portion corresponds to an updating portion of the electronic device of the present invention and is realized as one function of the control portion  15   a  of the image forming apparatus  1   a . Description will be given below for a specific example of the operation input method according to the operation input system above based on  FIG. 3A  and  FIG. 3B  to  FIG. 6 . 
       FIG. 3A  and  FIG. 3B  are flowcharts explaining exemplary processing of the image forming apparatus  1   a  shown in  FIG. 2 .  FIG. 4  is a flowchart explaining exemplary processing of the mobile terminal  2  shown in  FIG. 2 . In  FIG. 3A , first, the image forming apparatus  1   a  displays a preview screen  141   a  shown in  FIG. 5A  on the operation display portion  14   a  according to predetermined operation input by the user (step S 1 ). In an example of  FIG. 5A , “Page 1”, “Page 2”, “Page 3”, . . . are displayed as print preview images. Then, when the mobile terminal  2  comes close to the image forming apparatus  1   a  in a state where the preview screen  141   a  is displayed, the image forming apparatus  1   a  judges whether or not connection of near distance wireless communication with the mobile terminal  2  is established (step S 2 ). 
     Next, when judging that connection of near distance wireless communication with the mobile terminal  2  is established at step S 2  above (in the case of YES), the image forming apparatus  1   a  judges whether or not there is a transmission request of operation input information from the mobile terminal  2  (step S 3 ). On the other hand, when it is judged that connection of near distance wireless communication with the mobile terminal  2  is not established at step S 2  above (in the case of NO), the procedure shifts to a standby state at step S 2 . When judging that there is a transmission request of the operation input information from the mobile terminal  2  at step S 3  above (in the case of YES), the image forming apparatus  1   a  then transmits the operation input information associated with the preview screen  141   a  in advance to the mobile terminal  2  (step S 4 ), and further transmits a possible and impossible combination table of the operation input information shown in  FIG. 6  to the mobile terminal  2  (step S 5 ). In this example, ID information of the edit items which are set in advance by the user, here, double-side setting, header setting and footer setting concerning editing of a print preview image is transmitted as the operation input information. On the other hand, when it is judged that there is no transmission request of the operation input information from the mobile terminal  2  at step S 3  above (in the case of NO), the procedure shifts to a standby state at step S 3 . 
     In the mobile terminal  2 , operation input screen information associated with the ID Information of double-side setting, header setting and footer setting, which is transmitted from the image forming apparatus  1   a , is stored, and an operation input screen is displayed on the operation display portion  25  in accordance with this operation input screen information. A screen of various edit menus which is one example of this operation input screen is shown in  FIG. 5B . That is, edit items composed of double-side setting, header setting and footer setting are displayed so as to be selectable by the user on the screen of various edit menus  251  of  FIG. 5B . 
     Here, the possible and impossible combination table of  FIG. 6  will be explained. This possible and impossible combination table is for judging whether or not combination is allowed among a plurality of edit items displayed on the screen of various edit menus  251  of  FIG. 5B . An example of  FIG. 6  is a table configuration when the edit items included in a screen of various edit menus  102  shown in  FIG. 13A  through  FIG. 13E  above are targeted, in which items which are allowed to be combined are set as “1” and items which are not allowed to be combined are set as “0” for each edit item of page aggregation, book printing, blank sheet skip, background pattern setting, . . . . For example, in the case of page aggregation, book printing is not allowed to be combined, and blank sheet skip and background pattern setting are allowed to be combined. That is, when it is assumed that page aggregation, book printing, blank sheet skip and background pattern setting are displayed on the screen of various edit menus  251  of  FIG. 5B , if the user selects page aggregation, combination with book printing is not allowed to be selected, and combination with blank sheet skip and background pattern setting are allowed to be selected. 
     Then, in a processing flow of  FIG. 3B , the image forming apparatus  1   a  judges whether or not separation of the mobile terminal  2  is detected (step S 6 ), and when separation of the mobile terminal  2  is detected, that is, it is judged that the mobile terminal  2  is outside a range of near distance wireless communication (in the case of YES), near distance wireless communication is interrupted once, so that while the preview screen  141   a  is being displayed, whether or not the mobile terminal  2  is held over the preview screen  141   a  again and connection of near distance wireless communication with the mobile terminal  2  is established is judged (step S 7 ). On the other hand, at step S 6 , when separation of the mobile terminal  2  is not detected, that is, it is judged that the mobile terminal  2  is within the range of near distance wireless communication (in the case of NO), the procedure shifts to step S 8  while the preview screen  141   a  is being displayed. When judging that connection of near distance wireless communication with the mobile terminal  2  is established at step S 7  above (in the case of YES), the image forming apparatus  1   a  then judges whether or not there is a reflecting request of operation content from the mobile terminal  2  (step S 8 ). On the other hand, when it is judged that connection of near distance wireless communication with the mobile terminal  2  is not established at step S 7  above (in the case of No), the procedure shifts to a standby state at step S 7 . 
     When judging that there is a reflecting request of operation content from the mobile terminal  2  at step S 8  above (in the case of YES), the image forming apparatus  1   a  then receives operation content selected and set by the mobile terminal  2  from the mobile terminal  2  (step S 9 ). In the example of  FIG. 5B , footer setting is selected and set by the user, and “footer/date” is received as the operation content. On the other hand, when it is judged that there is no reflecting request of operation content from the mobile terminal  2  at step S 8  above (in the case of NO), the procedure shifts to a standby state at step S 8 . 
     The image forming apparatus  1   a  then updates the preview screen  141   a  of the operation display portion  14   a  shown in  FIG. 5A  based on the operation content received at step S 9 , that is, “footer/date” designated on the screen of various edit menus  251  of  FIG. 5B  (step S 10 ). Specifically, the user selects one to be edited by a touch operation from among the print preview images “Page 1”, “Page 2”, “Page 3”, . . . displayed on the preview screen  141   a . For example, as shown in  FIG. 5C , when “Page 1” is selected by the user, a date is automatically inserted in a footer  142   a  of this “Page 1”. Note that, if there is a page which is desired to be edited other than “Page 1”, when the user touches the corresponding page on the preview screen  141   a , the same content is reflected immediately. 
     Then, the image forming apparatus  1   a  judges whether or not other operation content is received from the mobile terminal  2  (step S 11 ), and if judging that other operation content is received (in the case of YES), repeats processing after returning to step S 10 , and if not (in the case of NO), the procedure ends as it is. In this manner, when there are a plurality of operation content selected and set by the mobile terminal  2 , each time operation content is received from the mobile terminal  2 , the preview screen  141   a  is updated. 
     Next, a processing flow of the mobile terminal  2  will be explained based on  FIG. 4 . First, as shown in  FIG. 5A , in a state where the preview screen  141   a  is displayed on the operation display portion  14   a  of the image forming apparatus  1   a , the mobile terminal  2  is held over the preview screen  141   a . At this time, the mobile terminal  2  judges whether or not connection of near distance wireless communication with the image forming apparatus  1   a  is established (step S 21 ). 
     When judging that connection of near distance wireless communication with the image forming apparatus  1   a  is established at step S 21  above (in the case of YES), the mobile terminal  2  requests the image forming apparatus  1   a  to transmit operation input information (step S 22 ). The mobile terminal  2  then receives the operation input information associated with the preview screen  141   a  in advance from the image forming apparatus  1   a  (step S 23 ), and further receives a possible and impossible combination table of the operation input information shown in  FIG. 6  from the image forming apparatus  1   a  (step S 24 ). In this example, in the same manner as the processing flow of  FIG. 3A  and  FIG. 3B , ID information of the edit items which are set in advance by the user, here, double-side setting, header setting and footer setting concerning editing of a print preview image is received as the operation input information. On the other hand, when it is judged that connection of near distance wireless communication with the image forming apparatus  1   a  is not established at step S 21  above (in the case of NO), the procedure shifts to a standby state at step S 21 . 
     When receiving the ID information of double-side setting, header setting and footer setting from the image forming apparatus  1   a , the mobile terminal  2  displays an operation input screen on the operation display portion  25  in accordance with operation input screen information stored in the storage portion  22  (step S 25 ). The screen of various edit menus  251  which is one example of this operation input screen is as shown in  FIG. 5B . That is, operation input items (edit items) composed of double-side setting, header setting and footer setting are displayed so as to be selectable by the user on the screen of various edit menus  251  of  FIG. 5B . 
     The mobile terminal  2  judges whether or not the operation input item is selected by the user from the screen of various edit menus  251  displayed on the operation display portion  25  (step S 26 ), and when judging that the operation input item is selected (in the case of YES), judges whether or not there is an item which is not able to be combined with the selected operation input item by referring to the possible and impossible combination table of  FIG. 6  (step S 27 ). On the other hand, when it is judged that the operation input item is not selected at step S 26  (in the case of NO), the procedure shifts to a standby state at step S 26 . 
     When judging that there is an item which is not able to be combined with the operation input item selected above at step S 27  (in the case of YES), the mobile terminal  2  turns the item which is not able to be combined into a selection disabled state, for example, such as gray out display or non-display on the screen of various edit menus  251  (step S 28 ). On the other hand, when it is judged that there is no item which is not able to be combined with the selected operation input item at step S 27  (in the case of NO), the procedure shifts to step S 29 . 
     The mobile terminal  2  judges whether or not there is selection of other operation input item by the user (step S 29 ), and when judging that there is selection of other operation input item (in the case of YES), repeats processing after returning to step S 27 . On the other hand, when it is judged that there is no selection of other operation input item at step S 29  (in the case of NO), the image forming apparatus  1   a  is requested to reflect the operation content selected and set in the screen of various edit menus  251  of  FIG. 5B  and the operation content is transmitted to the image forming apparatus  1   a  (step S 30 ). Note that, after the mobile terminal  2  receives the operation input information and the possible and impossible combination table from the image forming apparatus  1   a  at step S 23  and step S 24 , the mobile terminal  2  may be separated from the image forming apparatus  1   a . That is, the screen of various edit menus  251  of the mobile terminal  2  may be operated in a state where the user separates the mobile terminal  2  from the image forming apparatus  1   a . In this case, when the mobile terminal  2  is caused to come close to the preview screen  141   a  of the image forming apparatus  1   a  again, the mobile terminal  2  and the image forming apparatus  1   a  are connected through near distance wireless communication. The image forming apparatus  1   a  is then requested to reflect the operation content from the mobile terminal  2  and the above-described operation content is transmitted to the image forming apparatus  1   a.    
     In this manner, according to the present embodiment, the image forming apparatus is linked with the mobile terminal and screen transition of the image forming apparatus is eliminated, so that various operation input is able to be performed while confirming operation content from the mobile terminal on a screen of the image forming apparatus. 
     Second Embodiment 
     Though near distance wireless communication such as NFC is used for wireless communication of the image forming apparatus  1   a  and the mobile terminal  2  in the first embodiment described above, other wireless communication capable of longer-distance wireless communication than this near distance wireless communication may be used. For example, WiFi which is a kind of wireless LAN, Bluetooth (registered trademark, same applies below) suitable for wireless communication of about several meters, and the like are applicable. In the exemplary configuration of  FIG. 2 , the image forming apparatus  1   a  and the mobile terminal  2  are respectively provided with the wireless LAN-I/F  18   a  and the wireless LAN-I/F  23  and capable of wireless communication by wireless LAN (WiFi). 
       FIG. 7  is a flowchart explaining exemplary processing of the image forming apparatus  1   a  according to a second embodiment of the present invention.  FIG. 8  is a diagram showing one example of a WiFi pairing setting screen displayed on the image forming apparatus  1   a . First, the user displays the WiFi pairing setting screen of  FIG. 8  on the operation display portion  14   a  of the image forming apparatus  1   a  in advance, and sets whether to make WiFi pairing valid or invalid when connection of near distance wireless communication between the image forming apparatus  1   a  and the mobile terminal  2  is established. In this example, WiFi pairing is set to be valid. 
     In  FIG. 7 , the image forming apparatus  1   a  displays the preview screen  141   a  shown in  FIG. 5A  on the operation display portion  14   a  according to predetermined operation input by the user (step S 31 ). In the example of  FIG. 5A , “Page 1”, “Page 2”, “Page 3”, . . . are displayed as print preview images. Then, when the mobile terminal  2  is caused to come close to the preview screen  141   a  in a state where the preview screen  141   a  is displayed, the image forming apparatus  1   a  judges whether or not connection of near distance wireless communication with the mobile terminal  2  is established (step S 32 ). 
     When judging that connection of near distance wireless communication with the mobile terminal  2  is established at step S 32  above (in the case of YES), the image forming apparatus  1   a  refers to the WiFi pairing setting of  FIG. 8 , and because it is set to be “valid” here, executes wireless LAN pairing (step S 33 ). On the other hand, when it is judged that connection of near distance wireless communication with the mobile terminal  2  is not established at step S 32  above (in the case of NO), the procedure shifts to a standby state at step S 32 . 
     The image forming apparatus  1   a  judges whether or not connection of wireless LAN with the mobile terminal  2  is established (step S 34 ). When it is judged that connection of wireless LAN with the mobile terminal  2  is established (in the case of YES), the near distance wireless communication with the mobile terminal  2  is finished (step S 35 ). On the other hand, when it is judged that connection of wireless LAN with the mobile terminal  2  is not established at step S 34  (in the case of NO), the procedure shifts to a standby state at step S 34 . 
     The image forming apparatus  1   a  judges whether or not there is a transmission request of operation input information from the mobile terminal  2  through wireless LAN (step S 36 ), and when judging that there is a transmission request of operation input information from the mobile terminal  2  (in the case of YES), transmits the operation input information associated with the preview screen  141   a  in advance to the mobile terminal  2  (step S 37 ), and further transmits the possible and impossible combination table of the operation input information shown in  FIG. 6  to the mobile terminal  2  (step S 38 ). In this example, ID information of the edit items which are set in advance by the user, here, double-side setting, header setting and footer setting concerning editing of a print preview image is transmitted as the operation input information. On the other hand, when it is judged that there is no transmission request of the operation input information from the mobile terminal  2  at step S 36  above (in the case of NO), the procedure shifts to a standby state at step S 36 . 
     Though the same content explained in the first embodiment described above is applied for the mobile terminal  2 , when ID information of double-side setting, header setting and footer setting and the possible and impossible combination table ( FIG. 6 ) are received from the image forming apparatus  1   a  through wireless LAN, an operation input screen is displayed on the operation display portion  25  in accordance with operation input screen information stored in the storage portion  22 . The screen of various edit menus  251  which is one example of this operation input screen is as shown in  FIG. 5B . That is, edit items composed of double-side setting, header setting and footer setting are displayed so as to be selectable by the user on the screen of various edit menus  251  of  FIG. 5B . Further, since it is also the same as to the possible and impossible combination table of  FIG. 6 , the description is omitted here. 
     The image forming apparatus  1   a  judges whether or not there is a reflecting request of operation content from the mobile terminal  2  through wireless LAN (step S 39 ), and when judging that there is a reflecting request of operation content from the mobile terminal  2  (in the case of YES), receives the operation content selected and set by the mobile terminal  2  from the mobile terminal  2  (step S 40 ). In the example of  FIG. 5B , footer setting is selected and set by the user, and “footer/date” is received as the operation content. The image forming apparatus  1   a  then updates the preview screen  141   a  of the operation display portion  14   a  shown in  FIG. 5A  as shown in  FIG. 5C  based on the operation content received at step S 40 , that is, “footer/date” designated on the screen of various edit menus  251  of  FIG. 5B  (step S 41 ). On the other hand, when it is judged that there is no reflecting request of operation content from the mobile terminal  2  at step S 39  above (in the case of NO), the procedure shifts to a standby state at step S 39 . 
     Then, the image forming apparatus  1   a  judges whether or not other operation content is received from the mobile terminal  2  (step S 42 ), and if judging that other operation content is received (in the case of YES), repeats processing after returning to step S 41 , and if not (in the case of NO), the procedure ends as it is. In this manner, when there are a plurality of operation content selected and set by the mobile terminal  2 , each time operation content is received from the mobile terminal  2 , the preview screen  141   a  is updated. 
     In this manner, according to the present embodiment, in addition to the effect by the first embodiment, since the image forming apparatus and the mobile terminal are connected through wireless LAN, it is not necessary to hold over the mobile terminal for each operation input and it is possible to perform operation input even from a place relatively away from the image forming apparatus. 
     Third Embodiment 
     Though description has been given by exemplifying the image forming apparatus as the electronic device  1  of  FIG. 1  in the first and second embodiments described above, the embodiment of the electronic device  1  is not limited to the image forming apparatus and may be an electronic blackboard which allows performing handwriting input by a finger of the user or a stylus. 
       FIG. 9  is a block diagram showing an exemplary configuration of an operation input system according to a third embodiment of the present invention. The system of this example is composed of an electronic blackboard  1   b  which is one example of the electronic device  1  and a mobile terminal  2  capable of near distance wireless communication with the electronic blackboard  1   b.    
     The electronic blackboard  1   b  is provided with a storage portion  11   b  such as such as a hard disk or a semiconductor memory, a near distance wireless communication portion  12   b  which performs near distance wireless communication such as NFC with the mobile terminal  2 , an operation display portion  13   b  which has a touch panel, a control portion  14   b  composed of a CPU controlling operations of the electronic blackboard  1   b , a memory and the like, an operation input portion  15   b  which includes a numeric key pad and various operation keys, and a wireless LAN-I/F (interface)  16   b  which performs wireless LAN communication such as WiFi with the mobile terminal  2 . 
     The mobile terminal  2  is provided with a near distance wireless communication portion  21 , a storage portion  22 , a wireless LAN-I/F  23 , a control portion  24 , an operation display portion  25 , and a photographing portion  26  in the same manner as the exemplary configuration of  FIG. 2 . 
     In the present embodiment, the electronic blackboard is linked with the mobile terminal and screen transition of the electronic blackboard is eliminated so that a user is able to perform various operation input while confirming operation content from the mobile terminal on a screen of the electronic blackboard. For such a configuration, the electronic blackboard  1   b  is provided with a transmitting portion which, when proximity of the mobile terminal  2  is detected in a state of having a specific screen displayed on the operation display portion  13   b  (corresponding to a display portion of the electronic device of the present invention), transmits operation input information associated with the specific screen in advance to the mobile terminal  2 . This transmitting portion corresponds to a transmitting portion of the electronic device of the present invention and is realized by the control portion  14   b  and the near distance wireless communication portion  12   b  of the electronic blackboard  1   b . More specifically, when the user holds the mobile terminal  2  over the operation display portion  13   b  of the electronic blackboard  1   b , the near distance wireless communication portion  12   b  of the electronic blackboard  1   b  detects proximity of the mobile terminal  2 , and the near distance wireless communication portion  12   b  of the electronic blackboard  1   b  and the near distance wireless communication portion  21  of the mobile terminal  2  have a communication protocol based on, for example, NFC established therebetween to be connected so as to allow communication with each other. 
     Moreover, examples of the specific screen displayed on the operation display portion  13   b  of the electronic blackboard  1   b  include handwriting input screens shown in  FIG. 14A  through  FIG. 14D  above. Further, the operation input information transmitted from the electronic blackboard  1   b  to the mobile terminal  2  is ID information of an operation input item associated with a handwriting input screen in advance or operation input screen information including the ID information of the operation input item associated with the handwriting input screen in advance. As the operation input item, edit items such as a type, a size and a color of a stylus may be set as they are as shown in  FIG. 14A  through  FIG. 14D , or only the edit item which is frequently used by the user among these edit items may be set selectively. Specifically, for example, only a stylus color is associated with the handwriting input screen in advance. In addition, the ID information of the operation input items is information for discriminating these operation input items and notifying operation content according to the operation input items. The electronic blackboard  1   b  is controlled so as to execute the operation content notified with this ID information. Moreover, the operation input screen information is information of a size, arrangement and the like for displaying the above-described operation input items on a screen as icons. 
     The mobile terminal  2  is provided with a receiving portion which, when coming close to the electronic blackboard  1   b  in a state of having a screen displayed on the operation display portion  13   b , receives operation input information associated with the handwriting input screen in advance from the electronic blackboard  1   b , a display portion which displays an operation input screen based on the received operation input information, and a transmitting portion which transmits operation content (that is, ID information) instructed by the user from the operation input screen to the electronic blackboard  1   b . Note that, this display portion corresponds to a display portion of the mobile terminal of the present invention and is realized by the operation display portion  25  of the mobile terminal  2 . Moreover, the receiving portion and the transmitting portion correspond to a receiving portion and a transmitting portion of the mobile terminal of the present invention, and are realized by the control portion  24  and the near distance wireless communication portion  21  of the mobile terminal  2 . Here, as a method for displaying the operation input screen on the operation display portion  25  of the mobile terminal  2 , in the same manner as the case of the first embodiment, two different methods are considered according to content of the operation input information transmitted from the electronic blackboard  1   b , but repetitive description is omitted here. 
     Furthermore, the electronic blackboard  1   b  is provided with a receiving portion which receives the operation content (ID information) instructed by the user from the mobile terminal  2  and an updating portion which updates the handwriting input screen in accordance with the received operation content. Note that, this receiving portion corresponds to a receiving portion of the electronic device of the present invention and is realized by the control portion  14   b  and the near distance wireless communication portion  12   b  of the electronic blackboard  1   b . Moreover, the updating portion corresponds to an updating portion of the electronic device of the present invention and is realized as one function of the control portion  14   b  of the electronic blackboard  1   b . Note that, also in the present embodiment, wireless communication such as wireless LAN (WiFi) or Bluetooth may be used instead of near distance wireless communication. Though a basic processing flow of an operation input method when the electronic blackboard  1   b  is applied is the same as the case of the image forming apparatus  1   a , description will be given for some specific examples based on  FIG. 10A  through  FIG. 10C  to  FIG. 12A  through  FIG. 12D . 
       FIG. 10A  through  FIG. 10C  are diagrams explaining exemplary processing of the operation input system according to the third embodiment of the present invention. First, the electronic blackboard  1   b  displays a handwriting input screen  131   b  as shown in  FIG. 10A , that is, the handwriting input screen  131   b  including a handwriting input image  132   b  on the operation display portion  13   b  according to predetermined operation input by the user. When detecting proximity of the mobile terminal  2  in a state where the handwriting input image  132   b  is displayed on the handwriting input screen  131   b , the electronic blackboard  1   b  then transmits operation input information associated with the handwriting input screen  131   b  in advance to the mobile terminal  2 . In this example, ID information of the edit item which is set in advance by the user, here, a stylus color concerning editing of a handwriting input image is transmitted as the operation input information. 
     In the mobile terminal  2 , operation input screen information associated with the ID Information of the stylus color, which is transmitted from the electronic blackboard  1   b , is stored, and the operation input screen is displayed on the operation display portion  25  in accordance with this operation input screen information. A stylus color edit screen which is one example of this operation input screen is shown in  FIG. 10B . That is, black, red and green are displayed as the stylus color so as to be selectable by the user on the stylus color edit screen  252  of  FIG. 10B . The mobile terminal  2  transmits operation content selected and set by the user for this stylus color edit screen  252  to the electronic blackboard  1   b.    
     The electronic blackboard  1   b  receives the operation content selected and set by the mobile terminal  2  from the mobile terminal  2 . In the example of  FIG. 10B , the stylus color “red” is selected and set by the user, and “stylus color/red” is received as this operation content. The electronic blackboard  1   b  then updates the handwriting input screen  131   b  of the operation display portion  13   b  shown in  FIG. 10A  based on the operation content received from the mobile terminal  2 , that is, “stylus color/red” designated on the stylus color edit screen  252  of  FIG. 10B . Specifically, for example, as shown in  FIG. 10C , a stylus color of the handwriting input image  133   b  which is input by handwriting to the handwriting input screen  131   b  is changed to “red”. Note that, a stylus color of the handwriting input image  132   b  which has been already displayed may be also changed with the same content. 
       FIG. 11A  through  FIG. 11C  are diagrams explaining another exemplary processing of the operation input system according to the third embodiment of the present invention. First, the electronic blackboard  1   b  displays the handwriting input screen  131   b  as shown in  FIG. 11A , that is, the handwriting input screen  131   b  including a transmission destination address input field  134   b  on the operation display portion  13   b  according to predetermined operation input by the user. Note that, handwriting input is made invalid in a state where the transmission destination address input field  134   b  is displayed. When detecting proximity of the mobile terminal  2  in a state where the transmission destination address input field  134   b  is displayed on the handwriting input screen  131   b , the electronic blackboard  1   b  then transmits operation input information associated with the handwriting input screen  131   b  in advance to the mobile terminal  2 . In this example, ID information corresponding to the transmission destination address input field  134   b  is transmitted as the operation input information. 
     In the mobile terminal  2 , operation input screen information associated with the ID Information of the transmission destination address input field, which is transmitted from the electronic blackboard  1   b , is stored, and the operation input screen is displayed on the operation display portion  25  in accordance with this operation input screen information. A transmission destination address input screen which is one example of this operation input screen is shown in  FIG. 11B . That is, the transmission destination address input screen  253  of  FIG. 11B  includes a transmission destination address input field  253   a  and a virtual keyboard  253   b . Note that, the virtual keyboard  253   b  is originally mounted on the mobile terminal  2  and is displayed in cooperation with display of the transmission destination address input field  253   a . The user inputs desired address information (here, abc . . . ) by a touch operation for this virtual keyboard  253   b . The content of this operation input is reflected and displayed in the transmission destination address input field  253   a . For example, when a predetermined transmission button (not shown) is pressed by the user, the mobile terminal  2  then transmits operation content input from the transmission destination address input screen  253  to the electronic blackboard  1   b.    
     The electronic blackboard  1   b  receives the operation content input by the mobile terminal  2  from the mobile terminal  2 . In the example of  FIG. 11B , “abc . . . ” is input by the user as a transmission destination address, and “abc . . . ” is received as this operation content. Then, the electronic blackboard  1   b  updates the handwriting input screen  131   b  of the operation display portion  13   b  shown in  FIG. 11A  based on the operation content received from the mobile terminal  2 , that is, “abc . . . ” designated on the transmission destination address input screen  253  of  FIG. 11B . Specifically, for example, as shown in  FIG. 11C , the operation content “abc . . . ” is automatically reflected in the transmission destination address input field  134   b  of the handwriting input screen  131   b.    
       FIG. 12A  through  FIG. 12D  are diagrams explaining still another exemplary processing of the operation input system according to the third embodiment of the present invention. First, the electronic blackboard  1   b  displays the handwriting input screen  131   b  as shown in  FIG. 12A , that is, the handwriting input screen  131   b  including the handwriting input image  132   b  on the operation display portion  13   b  according to predetermined operation input by the user. When detecting proximity of the mobile terminal  2  in a state where the handwriting input image  132   b  is displayed on the handwriting input screen  131   b , the electronic blackboard  1   b  then transmits operation input information associated with the handwriting input screen  131   b  in advance to the mobile terminal  2 . In this example, a page list including the handwriting input image  132   b , that is, a page list including handwriting input images P 1  to P 4  with the handwriting input image  132   b  as P 1  is transmitted as the operation input information. 
     In the mobile terminal  2 , operation input screen information associated with the page list transmitted from the electronic blackboard  1   b  is stored, and the operation input screen is displayed on the operation display portion  25  in accordance with this operation input screen information. A page list screen which is one example of this operation input screen is shown in  FIG. 12B . That is, the handwriting input images P 1  to P 4  are displayed so as to be selectable by the user on the page list screen  254  of  FIG. 12B . The mobile terminal  2  transmits operation content selected by the user for this page list screen  254  to the electronic blackboard  1   b . Here, “P 4 ” corresponding to the handwriting input image P 4  is transmitted as shown in  FIG. 12C . 
     The electronic blackboard  1   b  receives the operation content selected by the mobile terminal  2  from the mobile terminal  2 . In the example of  FIG. 12C , the handwriting input image P 4  is selected by the user and “P 4 ” is received as this operation content. Then, the electronic blackboard  1   b  updates the handwriting input screen  131   b  of the operation display portion  13   b  shown in  FIG. 12A  based on the operation content received from the mobile terminal  2 , that is, “P 4 ” designated on the page list screen  254  of  FIG. 12C . Specifically, for example, as shown in  FIG. 12D , the handwriting input image  132   b  (P 1 ) displayed on the handwriting input screen  131   b  is switched to the handwriting input image  135   b  (P 4 ). 
     In this manner, according to the present embodiment, the electronic blackboard is linked with the mobile terminal and screen transition of the electronic blackboard is eliminated so that various operation input is able to be performed while confirming operation content from the mobile terminal on a screen of the electronic blackboard. 
     As above, though description has been given by exemplifying the operation input system, the electronic device, the mobile terminal and the operation input method as each embodiment of the present invention, the present invention may have a form as a program for causing a computer to execute this operation input method or a form as a computer readable recording medium having this program recorded therein. 
     As the above-described recording medium, specifically, a CD-ROM (-R/-RW), a magneto-optical disk, an HD (hard disk), a DVD-ROM (-R/-RW-RAM), an FD (flexible disk), a flash memory, a memory card, a memory stick, other various ROMs and RAMs and the like are able to be assumed, and realizing of this method is facilitated by recoding the program for causing the computer to execute the operation input method of the present invention described above in these recording mediums for distribution. In addition, the operation input method according to the present invention is able to be executed by mounting the recording medium as described above in an information processing apparatus such as a computer to read the program by the information processing apparatus or by storing this program in the recording medium provided in the information processing apparatus to read as necessary. 
     Further, according to the present invention, the electronic device such as the image forming apparatus is linked with the mobile terminal and screen transition of the electronic device is eliminated so that various operation input is able to be performed while confirming operation content from the mobile terminal on a screen of the electronic device.