Abstract:
An image reading apparatus connected with an information processing apparatus is provided. The image reading apparatus includes a specific parameter setting unit to set a parameter to be used in an image reading operation; an instruction receiving unit to receive input of an instruction to start reading of an image; a notification transmitting unit to transmit a read-start notification to the information processing apparatus; a parameter receiving unit to receive a parameter transmitted from the information processing apparatus in response to receipt of the read-start notification; and an image reading unit to read the image base on, at least with regard to the parameter set in the image reading apparatus, the parameter set by the specific parameter setting unit in place of the parameter transmitted from the information processing apparatus when the parameter transmitted from the information processing apparatus is received by the parameter receiving unit.

Description:
CROSS REFERENCE TO RELATED APPLICATION 
       [0001]    This application claims priority from Japanese Patent Application No. 2012-077010, filed on Mar. 29, 2012, the entire subject matter of which is incorporated herein by reference. 
       Background 
       [0002]    1. Technical Field 
         [0003]    An aspect of the present invention relates to an image reading apparatus having a function to transmit image data, which is generated by reading an image in accordance with a reading instruction, to an external information processing apparatus and a method to read the image. 
         [0004]    2. Related Art 
         [0005]    An image reading apparatus, e.g., a scanner, for reading an image is often connected with an information processing apparatus, e.g., a personal computer (PC), for example, by a USB cable and through a local area network (LAN), and image data generated based on the read image may be transmitted from the image reading apparatus to the PC via the connection. The image reading apparatus may be operated in accordance with a so-called push-scanning method, in which scanning is started according to an instruction inputted in the image reading apparatus via an operating panel, and image data representing the read image is transferred to the PC after the scanning is completed. 
         [0006]    More specifically, the push-scanning is generally conducted in a following sequence: When a button to activate the scanning behavior, which is arranged on the image reading apparatus, is touched or pressed, information (a scan-key event) to activate the scanning behavior is provided to the PC, and the PC activates a predetermined application program which deals with the scan-key event. The activated dealing application program processes the information and transmits a scan-start command and parameters to be used in the scanning to the image reading apparatus via a scanner driver program. The parameters to be used in the scanning behavior are information required by the image reading apparatus to read the image and may include configuration values for, for example, a reading resolution, a quantity of colors, brightness, and contrast to be used to reproduce the read image. The image reading apparatus receiving the scan-start command and the scanning parameters starts reading the image with reference to the settings indicated in the scanning parameters. When reading of the image is completed, image data which contains information representing the read image is transferred to the PC. 
         [0007]    Thus, in the conventional push-scanning method, the configuration values (i.e., the scanning parameters) are often set by default in the dealing application program installed in the PC or by a user in advance prior to reading, and the set scanning parameters are transmitted from the PC to the image reading apparatus. The image reading apparatus receiving the values thus conducts reading of the image by use of the transmitted scanning parameters. 
         [0008]    In such a conventional method, in which the scanning parameters are set in the PC via an input unit of the PC, once the scanning parameters are transferred to the image reading apparatus, it may be difficult to change the set scanning parameters in the image reading apparatus via an input unit of the image reading apparatus. Or, even though the scanning parameters can be changed in the PC, a user who is not familiar with operations in the PC may find it difficult to adjust the scanning parameters desirably via the PC. In consideration of the difficulty and inconvenience, an image reading apparatus, in which the scanning parameters can be set, rather than in PC, may be suggested. 
       SUMMARY 
       [0009]    However, concerning the push-scanning method, while it is widely recognized that the scanning parameters are set in the PC and transmitted to the image reading apparatus, in order to achieve the configuration, in which the scanning parameters are set in the image reading apparatus, it may require a wide range of modification in software programs in both the PC and the image reading apparatus. 
         [0010]    Moreover, the modification in software programs may undesirably increase an amount of data exchange between the image reading apparatus and the PC depending on mutual operability among the operating system, the scanner driver software in the PC, and the dealing application program. For example, the PC receiving the scan-key event from the image reading apparatus may request the image reading apparatus for the scanning parameters; the image reading apparatus may transmit the scanning parameters to the PC; the application program in the PC may obtain the scanning parameters transmitted from the image reading apparatus; the PC may recognize how the scanning would be conducted by use of the scanning parameters; the application program may once again return the scanning parameters to the image reading apparatus via the scanner driver software. Thus, redundant data exchange may be required, and an amount of data to be exchanged may be increased. In other words, communication efficiency may be lowered compared to the conventional push-scanning method. 
         [0011]    Moreover, some of the scanning parameters may be set rather easily in the PC than in the image reading apparatus, and it may not necessarily be convenient that all the scanning parameters are set collectively in the image reading apparatus. Thus, the user may not necessarily find the image reading apparatus, in which the scanning parameters can be set collectively, convenient. 
         [0012]    In consideration of the inconvenience, the present invention is advantageous in that an image reading apparatus with a push-scanning function, in which user&#39;s operability and convenience are improved, is provided. In particular, an image reading apparatus, in which parameters for reading an image can be configured without changing conventional procedures in an information processing apparatus or without changing a flow in communication with the information processing apparatus, is provided. 
         [0013]    According to an aspect of the present invention, an image reading apparatus configured to perform an image reading operation and configured to be connected with an information processing apparatus for mutual communication is provided. The information processing apparatus is configured to contain at least one parameter to be used in the image reading operation and configured to transmit the contained at least one parameter to the image reading apparatus when a read-start notification transmitted from the image reading apparatus is received. The image reading apparatus includes a specific parameter setting unit configured to set the at least one parameter to be used in the image reading operation in the image reading apparatus; an instruction receiving unit configured to receive input of a predetermined instruction to start reading of the image; a notification transmitting unit configured to transmit the read-start notification to the information processing apparatus when the input of the predetermined instruction is received by the instruction receiving unit; a parameter receiving unit configured to receive the at least one parameter, which is transmitted from the information processing apparatus in response to receipt of the read-start notification from the notification transmitting unit; and an image reading unit configured to read the image base on, at least with regard to the at least one parameter set in the image reading apparatus, the at least one parameter set by the specific parameter setting unit in place of the at least one parameter transmitted from the information processing apparatus when the at least one parameter transmitted from the information processing apparatus is received by the parameter receiving unit. 
         [0014]    According to another aspect of the present invention, a method to read an image by an image reading apparatus is provided. The image reading apparatus is configured to perform an image reading operation and configured to be connected with an information processing apparatus for mutual communication. The information processing apparatus is configured to contain at least one parameter to be used in the image reading operation and configured to transmit the contained at least one parameter to the image reading apparatus when a read-start notification transmitted from the image reading apparatus is received. The method includes setting the at least one parameter to be used in the image reading operation in the image reading apparatus; transmitting the read-start notification to the information processing apparatus when a predetermined instruction to start reading of the image is received in the image reading apparatus; reading the image base on, at least with regard to the at least one parameter set in the image reading apparatus, the at least one parameter set in the image reading apparatus in place of the at least one parameter transmitted from the information processing apparatus when the at least one parameter transmitted from the information processing apparatus is received. 
         [0015]    According to another aspect of the present invention, an image reading apparatus configured to perform an image reading operation and configured to be connected with an information processing apparatus for mutual communication is provided. The information processing apparatus is configured to contain at least one parameter to be used in the image reading operation and configured to transmit the contained at least one parameter to the image reading apparatus when a read-start notification transmitted from the image reading apparatus is received. The image reading apparatus includes an image reading unit configured to read an image in accordance with the at least one parameter; a specific parameter setting unit configured to set the at least one parameter to be used in the image reading operation in the image reading apparatus; an instruction receiving unit configured to receive input of a predetermined instruction to start reading of the image; and a control device. The control device is configured to transmit the read-start notification to the information processing apparatus when a predetermined instruction to start reading of the image is inputted by the user via the instruction receiving unit; receive the at least one parameter, which is transmitted from the information processing apparatus in response to receipt of the read-start notification transmitted by the control device; and read the image base on, at least with regard to the at least one parameter set in the image reading apparatus, the at least one parameter set by the specific parameter setting unit in place of the at least one parameter transmitted from the information processing apparatus when the at least one parameter transmitted from the information processing apparatus is received. 
         [0016]    According to another aspect of the present invention, an image reading system configured to perform an image reading operation in accordance with at least one reading parameter is provided. The image reading system includes an information processing apparatus configured to contain the at least one reading parameter to be used in the image reading operation; and an image reading apparatus connected with the information processing apparatus for mutual communication. The image reading apparatus includes a specific parameter setting unit configured to set the at least one parameter to be used in the image reading operation in the image reading apparatus; and a notification transmitting unit configured to transmit a read-start notification to the information processing apparatus when a predetermined instruction to read the image is inputted in the image reading apparatus. The information processing apparatus is configured to transmit the contained at least one reading parameter to the image reading apparatus in response to the read-start notification received from the image reading apparatus. The image reading apparatus further comprises a receiving unit configured to receive the at least one parameter, which is transmitted from the information processing apparatus in response to the read-start notification received from the notification transmitting unit; and an image reading unit configured to read the image base on, at least with regard to the at least one reading parameter set in the image reading apparatus, the at least one reading parameter set by the specific parameter setting unit in place of the at least one reading parameter transmitted from the information processing apparatus when the at least one reading parameter transmitted from the information processing apparatus is received by the receiving unit. 
     
    
     
       BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS 
         [0017]      FIG. 1  is a block diagram to illustrate an overall configuration of an image reading system according to an embodiment of the present invention. 
           [0018]      FIG. 2  is a ladder chart to illustrate flows of exchanges between a multifunction peripheral (MFP) and a PC when a push-scanning operation is conducted in the image reading system according to the embodiment of the present invention. 
           [0019]      FIGS. 3A-3H  are illustrative views of screens displayed on a touch-sensitive panel in the MFP when the push-scanning operation is conducted in the image reading system according to the embodiment of the present invention. 
           [0020]      FIG. 4  shows an illustrative view of a memory structure in a RAM of the MFP in the image reading system according to the embodiment of the present invention. 
           [0021]      FIG. 5  is a flowchart to illustrate a flow of in-MFP task processing steps to be executed in the MFP in the image reading system according to the embodiment of the present invention. 
           [0022]      FIG. 6  is a flowchart to illustrate a flow of destination PC selecting steps to be executed in the MFP in the image reading system according to the embodiment of the present invention. 
           [0023]      FIG. 7  is a flowchart to illustrate a flow of scanning configuration displaying steps to be executed in the MFP in the image reading system according to the embodiment of the present invention. 
           [0024]      FIG. 8  is a flowchart to illustrate a flow of push-scanning starting steps to be executed in the MFP in the image reading system according to the embodiment of the present invention. 
           [0025]      FIG. 9  is a flowchart to illustrate a flow of PC-set scanning task processing steps to be executed in the PC in the image reading system according to the embodiment of the present invention. 
       
    
    
     DETAILED DESCRIPTION 
       [0026]    Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. It is noted that various connections are set forth between elements in the following description. These connections in general, and unless specified otherwise, may be direct or indirect, and this specification is not intended to be limiting in this respect. 
         [0027]    An image reading system  1  according to the embodiment includes an MFP  2  and a plurality of PCs  3 ,  4 ,  5 , which are connected to communicate with one another via networks. In particular, the PC  3  and the PC  4  are connected with the MFP  10  via a network  6 , which is a wired local area network (LAN). It is to be noted that the network  6  may not necessarily a wired LAN but may be, for example, a wireless LAN. The PC  5  is connected with the MFP  10  via a universal serial bus (USB)  7 . 
         [0028]    The MFP  10  is a multi-functional device having a plurality of functions including an image reading function to read by scanning an image from an original medium, and a printing function to form an image on a recording medium such as a recording sheet and an OHP sheet. The MFP  10  is a network-enabled multi-functional device, of which functions can be shared with a plurality of users of the PCs  3 ,  4 ,  5 . 
         [0029]    The MFP  10  includes a CPU  11 , a ROM  12 , a RAM  13 , an operation/display unit  14 , a reader unit  16 , a printer unit  17 , a USB interface (I/F)  18 , and a LAN interface (I/F)  19 . 
         [0030]    The CPU  11  controls the unit components in the MFP  10  and executes various calculations according to programs and data stored in the ROM  12 . The programs in the ROM  12  include an in-MFP task processing program (see  FIG. 5 ) and a PC-set scanning task processing program (see  FIG. 9 ) to enable the image-reading function of the MFP  10 . The RAM  13  is a memory device, which can be accessed by the CPU  11 , and provides storage areas (see  FIG. 4 ) to be referred to when the image-reading function is used. 
         [0031]    The operation/display unit  14  includes a touch-sensitive panel  15 , which displays information concerning behaviors and configuration of the MFP  10 , and buttons (not shown), which are touched by a user to enter necessary instructions and information to manipulate the MFP  10 . 
         [0032]    The reader unit  16  includes an image sensor (not shown), by which an image appearing on an original medium is scanned, and generates image data representing the scanned image. The printer unit  17  prints an image on a recording medium. The USB interface  18  provides an interface between the MFP  10  and the PC  5  to exchange data there-between in accordance with a known USB standard. The LAN interface  19  is configured with a network interface card (NIC) to provide an interface between the MFP  10  with the PCs  3 ,  4 . 
         [0033]    A user using the MFP  10  may manipulate the operation/display unit  14  and select an operation mode (i.e., a function) of the MFP  10 . For example, the user may view a main menu screen (not shown) displayed on the touch-sensitive panel  15  and select a scanner mode, in which the image reading function of the MFP  10  is enabled, or a printer mode, in which the printing function of the MFP  10  is enabled, by touching (e.g., tapping on) a predetermined button or area assigned to the function in the operation/display unit  14 . When the user&#39;s selection is entered, the MFP  10  activates a predetermined processing flow to provide the selected function. 
         [0034]    When, for example, the scanner mode is selected, a screen to present more detailed operating options in the image reading function is displayed on the touch-sensitive panel  15 . 
         [0035]    The options include a push-scanning function. When the user selects to use the push-scanning function, an operation to provide the push-scanning function is activated. In particular, the in-MFP task processing flow, which will be described later with reference to  FIG. 5 , is activated, and scanning parameters to execute the push-scanning operation are set. 
         [0036]    The options in the scanning function include a pull-scanning operation, in which an instruction for scanning an image is inputted in the PC while the MFP  10  is not touched by a user. In order to enable both the push-scanning and pull-scanning operations, in the present embodiment, when the MFP  10  is powered on, the CPU  9  executes the PC-set scanning task processing flow shown in  FIG. 9 . Thereby, the MFP  10  can process either of the push-scanning or pull-scanning operation. When the push-scanning operation is activated, an image is read in the PC-set scanning task processing flow (see  FIG. 9 ) by use of scanning parameters set in the in-MFP task processing flow (see  FIG. 5 ). 
         [0037]    The PCs  3 ,  4 , and  5  are similarly in a known configuration, although the methods to be connected with the MFP  10  may be different. Each of the PCs  3 ,  4 ,  5  includes, although not shown, a CPU, a ROM, a RAM, a hard disk drive, a display unit including a liquid crystal display, an operation unit including a keyboard and a mouse, and communication interfaces. In the embodiment described below, unless otherwise noted by the reference signs, “the PC” refers to any one of the PCs  3 ,  4 ,  5 . 
         [0038]    In the hard disk drive of each PC  3 ,  4 ,  5 , various software programs are installed. The programs may include an operating system (OS), application programs such as word processing application, spreadsheet application, image processing application, and driver software such as printer driver, and scanner driver. The programs further include application programs which deal with the push-scanning event to enable the push-scanning operation. 
         [0039]    The application software dealing with the push-scanning event is programmed to set the scanning parameters for the push-scanning operation. When the application software is activated by a scan-key event notification, the application software transmits the set scanning parameters to the MFP  10 . After transmitting the scanning parameters, the application software receives image data transmitted from the MFP  10  and may modify the image data. The application software may be provided to the user by a manufacturer of the MFP  10  along with the MFP  10  or by other software provider, and various kinds of application software are available. 
         [0040]    In each of the PCs  3 ,  4 ,  5 , a known OS (e.g., Windows; registered trademark) is installed. Windows provides a function called Windows Imaging Acquisition (WIA). WIA is one of application programming interfaces (API) supported by the Windows, which enables communication with peripheral devices such as an image reading apparatus and a digital camera to obtain image data from the peripheral devices. 
         [0041]    Next, the push-scanning operation, which is executed in the image reading system  1  in the present embodiment, will be described in detail. The push-scanning operation in the present embodiment is, similarly to conventional push-scanning operations, conducted in accordance with the scanning parameters transmitted from the application program in the PC, which is notified of the scan-key event from the MFP  10 . Based on these behaviors of the MFP  10  and the PC, unlike the conventional push-scanning operation, some of the scanning parameters can be set in the MFP  10 . In particular, while items of the scanning parameters to be set and used in the push-scanning operation include configuration values concerning, for example, a quantity of colors, a resolution, contrast, brightness, and a scanning range, the parameters for the resolution and the quantity of colors may be MFP-configurable parameters, which can be set in the MFP  10 . In other words, the remainder of the configuration values is set in the PC. 
         [0042]    An overall sequence of the push-scanning operation will be described with reference to the ladder chart shown in  FIG. 2 . The ladder chart shown in  FIG. 2  is based on assumption that the resolution and the quantity of colors to be used in the push-scanning operation are set in the MFP  10 . 
         [0043]    When the push-scanning operation is activated, the items which are configurable in the MFP  10 , i.e., the resolution and the quantity of colors, are set by the user, who inputs the configuration values for the items via the touch-sensitive panel  15  of the MFP  10 . The values are entered through a color quantity selectable screen E displayed on the touch-sensitive panel  15  (see  FIG. 3E ) and a resolution selectable screen F displayed on the touch-sensitive panel  15  (see  FIG. 3F ). 
         [0044]    More specifically, when the push-scanning operation is activated, screens A-D shown in  FIGS. 3A-3D  are displayed on the touch-sensitive panel  15 , and when the user selects one of the options, the screens E and F are displayed to set the scanning parameters. However, detailed description of the screens  3 A- 3 F will be provided later. 
         [0045]    When the scanning parameters for the resolution and the quantity of colors are selected, the selected parameters are temporarily stored in the RAM  13 . In particular, the selected parameters are stored in an MFP-set scanning configuration memory  26  among storage areas  21 - 26  in the RAM  13  (see  FIG. 4 ) to be the MFP-configurable parameters. 
         [0046]    Thereafter, when the user touches (taps on) a scan-start key through a scan starter screen G (see  FIG. 3G ), the PC is notified of a scan-key event from the MFP  10 . More specifically, the PC is notified of a push-scanning event species, which indicates a scanning method, by receiving a notification of the scan-key event from the MFP  10 . The push-scanning event species is selected by the user via the scanning mode selectable screen A shown in  FIG. 3A , which is displayed prior to setting the resolution and the quantity of colors via the scanning configuration setting screen D shown in  FIG. 3D . The destination PC, which is to be notified of the scan-key event, is also selected by the user via a PC selectable screen B shown in  FIG. 3B  prior to setting the resolution and the quantity of colors via the resolution selectable screen F screen D. 
         [0047]    When the PC is notified of the scan-key event by the MFP  10 , the WIA in the PC recognizes the notification and activates a dealing application software, which is associated with the notified event (the push-scanning event species) to have the software to deal with the scan-key event. When activated, the dealing application software inquires of the WIA about the push-scanning event species, and the WIA responds to the inquiry. More specifically, the WIA informs the dealing application the push-scanning event species notified from the MFP  10  and that the MFP  10  is the cooperating device. 
         [0048]    With the information provided from the WIA, the dealing application software transmits a scan-start command to the MFP  10  along with scanning parameters set in the dealing application software. The MFP  10 , on the other hand, receives the scan-start command and the scanning parameters transmitted from the PC and examines whether the PC transmitted the scan-start command and the scanning parameters is consistent with the PC, to which MFP  10  transmitted the scan-key event earlier. 
         [0049]    If the two PCs are judged to be consistent (“judgment A”), the MFP  10  starts scanning an image by using the scanning parameters stored in the MFP-set scanning configuration memory  26  in the RAM  13 . More specifically, all of the scanning parameters transmitted from the PC to the MFP  10  are once stored in a PC scanning configuration memory  21  in the RAM  13  (see  FIG. 4 ). Yet, the resolution and the quantity of colors transmitted from the PC are replaced with by the resolution and the quantity of colors stored in the MFP-set scanning configuration memory  26 . Thereafter, scanning is conducted by use of the updated scanning parameters including the replacing resolution and quantity of colors. 
         [0050]    If the two PCs are judged to be different (“judgment B”), the MFP  10  transmits an error notification to the sender PC of the scan-start command. In this case, scanning for the scan-start command is not conducted. 
         [0051]    After scanning is completed, the MFP  10  transmits image data representing the read image to the PC. The PC receiving the image data transmitted from the MFP  10  forwards the image data to the dealing application software via the scanner driver. Thus, the dealing application software is enabled to process the image data. 
         [0052]    The memory structure of the RAM  13  will be described. As shown in  FIG. 4 , the RAM  13  is configured to have storage areas  21 - 26 , including memory areas and flag areas, which are to be referred to when the push-scanning operation is conducted. Among the plurality of storage areas  21 - 26 , a PC-set scanning configuration memory  21  is an area, in which the scanning parameters (e.g., the resolution, the quantity of colors, a scanning range, brightness, contrast, etc.) to be used in the scanning operation are stored. In other words, the scanning operation is conducted by use of the scanning parameters stored in the PC-set scanning configuration memory  21 . 
         [0053]    A process flag  22  is an area, in which a push-scanning start flag and an in-MFP setting flag are stored. The push-scanning start flag is set “on” when the MFP  10  notifies the PC of the scan-key event. The in-MFP setting flag indicates whether the configuration values concerning the resolution and the quantity of colors set in the MFP  10  are to be used or the configuration values concerning the resolution and the quantity of colors transmitted from the PC are to be used. 
         [0054]    A push-scanning event species memory  23  is an area, in which the push-scanning event species selected via the scanning mode selecting screen A (see  FIG. 3A ) displayed on the touch-sensitive panel  15 . 
         [0055]    A push-scanning connectable PC list memory  24  is an area, in which information concerning the PCs connected with the MFP  10  is stored. In particular, for each of the connected PCs, a connecting interface, a name, and IP addresses are stored. 
         [0056]    A push-scanning destination PC information memory  25  is an area, in which information of the PC to be used in the push-scanning operation among the PCs  3 ,  4 ,  5  is stored. In other words, a connecting interface, a name, and an IP address of the PC to which the image data is transferred from the MFP  10  are indicated. 
         [0057]    The MFP-set scanning configuration memory  26  is the area, in which the configuration values of the resolution and the quantity of colors selected by the user are stored when selection, that the resolution and the quantity of colors set in the MFP  10  are to be used, is made, and when the values for the resolution and the quantity of colors are inputted in the MFP  10  by the user. 
         [0058]    Next, an in-MFP task processing flow and a PC-set scanning task processing flow, which are executed by the CPU  11  of the MFP  10 , to provide the push-scanning function, will be described with reference to  FIGS. 5-9 . 
         [0059]    The in-MFP task processing flow will be described with reference to  FIG. 5 . As has been described above, in the MFP  10 , when the scanner mode is activated among the plurality of functions, and the push-scanning function is selected, the CPU  11  activates the in-MFP task processing flow. 
         [0060]    In the in-MFP task processing flow, in S 110 , the CPU  11  clears (deletes) information stored in the processing flag  22 , the push-scanning event species memory  23 , the push-scanning connectable PC memory  24 , the push-scanning destination PC information memory  25 , and the MFP-set scanning configuration memory  26  in the RAM  13 . 
         [0061]    In S 120 , the CPU  11  executes a scanning mode selectable flow. More specifically, the CPU  11  controls the touch-sensitive panel  15  to display the scanning mode selectable screen A (see  FIG. 3A ) to prompt the user to select one of a plurality of scanning modes, which are scan-to-image, scan-to file, scan-to-OCR. When the user taps on a desired scanning mode among the plurality of scanning modes presented in the scanning mode selectable screen A to enter the user&#39;s selection, the selected scanning mode is determined to be the push-scanning event species and stored in the push-scanning event species memory  23  in the RAM  13 . 
         [0062]    In S 130 , the CPU  11  executes a destination PC selecting flow, of which detailed steps are shown in  FIG. 6 . More specifically, as shown in  FIG. 6 , in S 310 , the CPU  11  obtains the information, i.e., connecting interfaces, names, and IP addresses, of the PCs connected with the MFP  10  and stores the obtained information in the push-scanning connectable PC memory  24 . In S 320 , the CPU  1  displays a PC selectable screen B (see  FIG. 3B ) on the touch-sensitive panel  15 . Thus, through the PC selectable screen B, the names of the PCs obtained in S 310  are presented, and the user is prompted to select one of the presented PC. 
         [0063]    In S 330 , the CPU  11  judges whether the touch-sensitive panel  15  with the PC selectable screen B being displayed is touched. If no touch on the touch-sensitive panel  15  is detected (S 330 : NO), the CPU  11  repeats S 330 . If the touch-sensitive panel  15  is touched (S 330 : YES), in  5340 , the CPU  11  determines which PC among the presented PCs has been selected to be the destination PC (i.e., a PC to which the image data is to be transferred after scanning) based on the location being touched. Thereafter, in S 350 , the CPU  11  obtains the information concerning the selected destination PC from the push-scanning connectable PC memory  24  and stores in the push-scanning destination PC information memory  25  in the RAM  13 . The flow returns to the in-MFP task processing flow ( FIG. 5 ). 
         [0064]    In S 140  in the in-MFP task processing flow, the CPU  11  displays a scanning configuration selectable screen C (see  FIG. 3C ) on the touch-sensitive panel  15 . Thereby, the user is prompted to select between options: that the resolution and the quantity of colors set in the PC are validated to be used; and that the resolution and the quantity of colors set in the MFP  10  via the touch-sensitive panel  10  are validated to be used. 
         [0065]    After displaying the scanning configuration selectable screen C, in S 150 , the CPU  11  judges whether the touch-sensitive panel  15  is touched by the user. If no touch on the touch-sensitive panel  15  is detected (S 150 : NO), the CPU  11  repeats S 150 . If the touch-sensitive panel  15  is touched (S 150 : YES), in S 160 , the CPU  11  judges which configuration values, between the values set in the PC and the values set in the MFP  10 , are selected by the user and determines the scanning parameters to be used. The flow proceeds to S 170 . 
         [0066]    In S 170 , the CPU  11  judges whether the option of using the scanning configuration set via the touch-sensitive panel  15  in the MFP  10  is selected based on the judgment made in S 160 . In S 170 , if the option of using the scanning configuration set in the MFP  10  (i.e., “Set in PC” in the scanning configuration selectable screen C) is not selected (S 170 : NO), the flow proceeds to S 200 . If the option of using the scanning configuration set via the touch-sensitive panel  15  in the MFP  10  (i.e., “Set in PC” in the scanning configuration selectable screen C) is selected (S 170 : YES), in S 180 , the CPU  11  sets the in-MFP setting flag in the processing flag  22  “on,” and in S 190 , the CPU  11  executes the scanning configuration displaying flow. 
         [0067]    Steps in the scanning configuration displaying flow are shown in  FIG. 7 . When the flow starts, in S 410 , the CPU  11  sets predetermined default values in the areas for the quantity of colors and the resolution in the MFP-set scanning configuration memory  26  in the RAM  13 . The default values are initially set in the MFP  10  in advance of activation of the in-MFP task processing flow. In S 420 , the CPU  11  displays a scanning configuration setting screen D (see  FIG. 3D ) on the touch-sensitive panel  15 . Thereby, the user is prompted to select one of the options to be set in the PC, between the quantity of colors and the resolution. 
         [0068]    After displaying the scanning configuration setting screen D, in S 430 , the CPU  11  judges whether the touch-sensitive panel  15  is touched by the user. If no touch on the touch-sensitive panel  15  is detected (S 430 : NO), the CPU  11  repeats S 430 . If the touch-sensitive panel  15  is touched (S 430 : YES), in S 440 , the CPU  11  determines which option button has been selected by the user based on the location being touched. Thereafter, in S 450 , the CPU  11  judges whether an “OK” button displayed on the scanning configuration setting screen D has been touched. If the “OK” button has been touched (S 450 : YES), the flow proceeds to S 200  (see  FIG. 5 ). If the “OK” button has not been touched (S 450 : NO), the flow proceeds to S 460 , and the CPU  11  judges whether the option “quantity of colors” has been selected by the user. 
         [0069]    In S 460 , if the option “quantity of colors” has been selected (S 460 : YES), in S 470 , the CPU  11  displays a color quantity selectable screen E (see  FIG. 3E ) on the touch-sensitive panel  15 . Thereby, the user is prompted select one of the options for the quantity of colors to be set in the scanning operation. In the present example, the options for the color quantity include, but not limited to, “multicolor” and “monochrome.” If the option “quantity of colors” has not been selected (S 460 : NO), the flow proceeds to S 510 . 
         [0070]    After displaying the color quantity selectable screen E, in S 480 , the CPU  11  judges whether the touch-sensitive panel  15  is touched by the user. If no touch on the touch-sensitive panel  15  is detected (S 480 : NO), the CPU  11  repeats S 480 . If the touch-sensitive panel  15  is touched (S 480 : YES), in S 490 , the CPU  11  determines the quantity of colors which has been selected by the user based on the location being touched. Thereafter, in S 500 , the CPU  11  sets the selected quantity of colors in the area for the quantity of colors in the MFP-set scanning configuration memory  26  in the RAM  13  based on the judgment made in S 490 . The flow returns to S 420 . 
         [0071]    Meanwhile, in S 460 , if the option “quantity of colors” has not been selected (S 460 : NO), but the option “resolution” has been selected, in S 510 , the CPU  11  displays a resolution selectable screen F (see  FIG. 3F ), in which a plurality of optional resolutions are presented on the touch-sensitive panel  15 . Thereby, the user is prompted to select one of the optional resolutions. In the present example, the optional resolutions include, but not limited to, 100 dpi, 200 dpi, 300 dpi, and 600 dpi. 
         [0072]    After displaying the resolution selectable screen F, in S 520 , the CPU  11  judges whether the touch-sensitive panel  15  is touched by the user. If no touch on the touch-sensitive panel  15  is detected (S 520 : NO), the CPU  11  repeats S 520 . If the touch-sensitive panel  15  is touched (S 520 : YES), in S 530 , the CPU  11  determines the value for the resolution which has been selected by the user based on the location being touched. Thereafter, in S 540 , the CPU  11  sets the selected resolution in the area for the resolution in the MFP-set scanning configuration memory  26  in the RAM  13  based on the judgment made in S 530 . The flow returns to S 420 . 
         [0073]    Through S 420 -S 450 , the CPU  11  displays the scanning configuration setting screen D (see  FIG. 3D ) on the touch-sensitive panel  15  in S 420 , and when the “OK” button is touched (S 450 : YES), the flow proceeds to S 200  (see  FIG. 5 ). In S 200 , the CPU  11  displays a scan starter display G (see FIG. G). Thereby, the user is prompted to select an option between “start scanning” and “cancel.” In S 210 , the CPU  11  judges whether the “start scanning” has been selected, and if the “start scanning” has not been selected (S 210 : NO), but the “cancel” has been selected, the CPU  11  terminates the in-MFP task processing flow. On the other hand, if the “start scanning” has been selected (S 210 : YES), in S 220 , a push-scanning starting flow is activated. 
         [0074]    Steps in the push-scanning starting flow are shown in  FIG. 8 . When the flow starts, as shown in  FIG. 8 , in S 610 , the CPU  11  obtains the push-scanning event species from the push-scanning event species memory  23  in the RAM  13  and transmits a notification of the scan-key event to the destination PC. In S 620 , the CPU  11  sets a push-scanning start flag in the processing flag  22  in the RAM  13 . In S 630 , the CPU displays a PC in-connection screen H (see  FIG. 3H ) on the touch-sensitive panel  15 . Thereby, the user is informed that the MFP  10  is communicating with the PC. 
         [0075]    After displaying the PC in-connection screen H, in S 640 , the CPU  11  judges whether a scan-start notification is received from a PC-scanning task flow (see  FIG. 9 ), which runs separately in parallel with the in-MFP task processing flow. If the scan-start notification has been received (S 640 : YES), the push-scanning starting flow ends, and accordingly, the in-MFP task processing flow in  FIG. 5  ends thereafter. When no scan-start notification has been received (S 640 : NO), in S 650 , the CPU  11  judges whether the connection between the MFP  10  and the destination PC has reached timeout, i.e., whether a predetermined length of time has elapsed after the transmission of the scan-key event without receiving the scan-start notification from the PC-set scanning task processing flow. 
         [0076]    In S 650 , if the CPU  11  determines that the connection has reached timeout (S 650 : YES), in S 690 , the push-scanning start flag in the RAM  13  is cleared, and in S 700 , the communication with the destination PC is terminated. Thus, the push-scanning starting flow ends thereat, and accordingly, the in-MFP task processing flow ends thereafter. 
         [0077]    Meanwhile, if the connection has not reached timeout yet (S 650 : NO), in S 660 , while the PC in-connection screen H is displayed on the touch-sensitive panel  15 , the CPU  11  judges whether the touch-sensitive panel  15  is touched by the user. In the PC in-connection screen H, a “cancel” button is displayed, and when the user taps on the cancel button to select canceling the push-scanning operation, the current push-scanning operation is aborted. Thus, in the steps S 660 -S 680 , the CPU  11  judges whether the “cancel” button has been selected. 
         [0078]    In particular, in S 660 , if the CPU  11  determines that the touch-sensitive panel  15  is touched by the user, in S 670 , the CPU  11  determines the button which has been selected by the user based on the location being touched. In S 680 , the CPU  11  judges whether the “cancel” button has been selected based on the judgment made in S 670 . If the “cancel” button has been selected (S 680 : YES), the flow proceeds to S 690 -S 700 , and the in-MFP task processing flow ends thereafter. 
         [0079]    Next, a PC-set scanning task processing flow, which is conducted upon activation of the MFP  10  (or the CPU  11 ), will be described with reference to  FIG. 9 . When the PC-set scanning task processing flow starts, in S 810 , the CPU  11  clears the scanning parameters stored in the PC-set scanning configuration memory  21 . In S 820 , the CPU  11  judges whether a scan-start command and scanning parameters have been received from an external PC, which is one of the PCs  2 ,  4 ,  5  connected with the MFP  10 . If no scan-start command or scanning parameters has been received (S 820 : NO), the CPU  11  repeats S 820 . If the scan-start command and the scanning parameters have been received (S 820 : YES), in S 830 , the CPU  11  sets the received scanning parameters in the predetermined areas in the PC-set scanning configuration memory  21  in the RAM  13 . 
         [0080]    In S 840 , the CPU  11  judges whether the push-scanning start flag is set in the processing flag  22  in the RAM  13 . If the push-scanning start flag is not set, while the scanning parameters have been received from an external PC even though the MFP  10  is not conducting a push-scanning operation, it is determined that the external PC conducted a pull-scanning operation. Therefore, the flow proceeds to S 910 , and a scanning operation is conducted. The scanning operation in S 910  includes reading the image by use of the scanning parameters stored in the PC-set scanning configuration memory  21  in the RAM  21  and transmitting image data generated based on the read image to the external PC. 
         [0081]    Meanwhile, in S 840 , if the push-scanning start flag is set in the processing flag  22  in the RAM  13  (S 840 : YES), in S 850 , the CPU  11  obtains information concerning the sender PC of the scan-start command received in S 820 . The information concerning the sender PC may be obtained, for example, based on header data, which is transmitted along with the scan-start command, to identify the sender PC. 
         [0082]    Following S 850 , in S 860 , the CPU  11  examines whether the sender PC obtained in S 850  and the destination PC stored in the push-scanning destination PC information memory  25  in the RAM  13  are consistent. In other words, consistency between the destination PC, to which the MFP  10  transmitted the scan-key event in S 610  ( FIG. 8 ), and the sender PC who transmitted the scan-start command thereafter, is examined 
         [0083]    In S 860 , if the sender PC obtained in S 850  and the destination PC stored in the push-scanning destination PC information memory  25  in the RAM  13  are not consistent (S 860 : NO), it is assumed that a user of a different PC, which is different from the destination PC, may have erroneously interposed a pull-scanning operation to interrupt the push-scanning operation. In this regard, the interruption by the pull-scanning operation by the different PC user should be denied; therefore, in S 920 , error information, which indicates that the MFP  10  is in use (i.e., the MFP  10  is currently occupied by the push-scanning operation) and that the interrupting scanning instruction should not be accepted, is transmitted to the external PC being the sender of the scan-start command. The flow returns to S 810 . 
         [0084]    Meanwhile, in S 860 , if the sender PC obtained in S 850  and the destination PC stored in the push-scanning destination PC information memory  25  in the RAM  13  are consistent (S 860 : YES), in S 870 , the CPU  11  judges whether the in-MFP setting flag is set in the processing flag  22  in the RAM  13 . In other words, it is judged whether the option “set in MFP”, which indicates that the resolution and the quantity of colors set in the MFP  10  are to be used, has been selected in the scanning configuration selectable screen C ( FIG. 3C ). 
         [0085]    In S 870 , if the in-MFP setting flag is not set (S 870 : NO), it is determined that the scanning parameters set in the PC, including the quantity of colors and the resolutions, are to be used for the push-scanning operation. Therefore, the flow proceeds to S 900 , and the CPU  11  notifies the separately running in-MFP task processing flow (see  FIG. 5 ) of start of the push-scanning operation. With the notification of the scan-stat, affirmative judgment is made in S 640  in the in-MFP task processing flow (see  FIG. 8 ). The flow proceeds to S 910 , and a scanning operation is conducted. In the scanning operation in S 910 , the image is read in accordance with the scanning parameters provided by the PC. 
         [0086]    Meanwhile, in S 870 , if the in-MFP setting flag is set (S 870 : YES), it is determined that the scanning parameters set in the MFP, i.e., the quantity of colors and the resolution, are to be used for the push-scanning operation. Therefore, in S 880 , the CPU  11  obtains the quantity of the colors from the MFP-set scanning configuration memory  26  in the RAM  13  and replaces the quantity of colors set in the PC-set scanning configuration memory  21  with the obtained quantity. Further, in S 890 , the CPU  11  obtains the resolution from the MFP-set scanning configuration memory  26  in the RAM  13  and replaces the resolution set in the PC-set scanning configuration memory  21  with the obtained resolution. 
         [0087]    Thus, the quantity of colors and the resolution set in the PC-set scanning configuration memory  21  are replaced with the configuration values set in the MFP  10  to process S 900 -S 910 . Therefore, when the push-scanning operation is conducted, the configuration values, including the quantity of colors and the resolutions which are set in the MFP  10 , are used. 
         [0088]    According to the image reading system  1  described above, while the basic configuration, in which the scanning parameters are transmitted from the PC to the MFP  10 , is maintained, the quantity of colors and the resolution are configurable in the MFP  10 . Further, the user of the MFP  10  can make selection, between the quantity of colors and the resolution having been set in the MFP  10  and the quantity of colors and the resolution having been set in the PC and transmitted, within the MFP  10 . Therefore, when the scanning parameters set in the MFP  10  are selected to be used, concerning the quantity of colors and the resolution, the configuration values set in the MFP  10  via the operation/display unit  14  are used. 
         [0089]    Thus, while the procedure to be conducted in the PC is maintained unchanged, and the communication procedures between the MFP  10  and the PC are maintained unchanged, a part of the scanning parameters, e.g., the quantity of colors and the resolution, can be set in the MFP  10 . Accordingly, usability for the user can be effectively improved. 
         [0090]    According to the image reading system  1  described above, the default value for the quantity of colors and the default value for the resolution are initially set. Therefore, if there is no preference for the user, the default values for the quantity of colors and the resolution are employed in the push-scanning operation; therefore, the user can effectively omit the procedure to set the scanning parameters. On the other hand, when the user has preferences concerning the quantity of colors and/or the resolution, the user can select to change the scanning parameters. Therefore, the push-scanning operation according to the user&#39;s preferred scanning parameters can be effectively provided. 
         [0091]    In the image reading system  1  described above, not all the scanning parameters can be set in the MFP  10 , but the scanning parameters which can be set in the MFP  10  are limited (e.g., the quantity of colors and the resolution). It is to be noted that all the scanning parameters may be similarly set in the MFP  10 , however, when all of the scanning parameters should be set in the MFP  10 , the data exchange between the MFP  10  and the PC would require more resources (e.g., memories, burden on the CPU  11 , etc.). 
         [0092]    Meanwhile, the MFP  10  is equipped with a smaller quantity of and smaller-sized input/output devices (e.g., operation buttons, keys, and the touch-sensitive panel  15 ) compared to those in the PCs. Therefore, when all the scanning parameters should be set in the MFP  10 , inputting all the necessary scanning parameters via those relatively difficult-to-manage input/output devices may cause inconvenience and may produce burden on the user. Thus, such configuration may not necessarily be welcomed by the user who is not familiar with the behaviors of the input/output devices in the MFP  10 . Rather, it may be convenient for the user when the modifiable scanning parameters, which can be modified or adjusted by the user in the MFP  10 , are limited. Even for an experienced user, and even when all the scanning parameters can be modified via the PC  10 , it may be easier to modify the configuration values in the PC when the detailed modification of the configuration values is required. Ultimately, the function of the MFP  10 , by which all the scanning parameters can be changed, may not be advantageously utilized. Therefore, as has been described in the above embodiment, with the scanning parameters which can be set in the MFP  10  being limited to a few items, the improved usability and convenience of the MFP  10  are provided to the user while increase of the resources is avoided. 
         [0093]    Further, according to the embodiment described above, even when the configuration values for the quantity of colors and the resolution are validly set in the MFP  10 , when the destination PC, to which the MFP  10  sends the scan-key event, and the sender PC, who sends the scan-start command to be received in the MFP  10  after sending the scan-key event, do not coincide with each other, the MFP  10  returns error information to the sender PC of the scan-start command. Thereby, an inconsistent scanning operation for the scan-start command is prevented from being conducted. Thus, the MFP  10  can provide a reliable scanning function. 
         [0094]    Although an example of carrying out the invention has been described, those skilled in the art will appreciate that there are numerous variations and permutations of the image reading apparatus that fall within the spirit and scope of the invention as set forth in the appended claims. It is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or act described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims. 
         [0095]    For example, the configuration values of the quantity of colors and the resolution may not always be changed in solely the MFP  10  but may be changed separately in the separated apparatuses. In other words, one of the quantity of colors and the resolution may be set in the MFP  10 , and the other may be set in the PC. 
         [0096]    More specifically, it is possible that the user is not keen to set in the MFP  10  all the scanning parameters which can be set in the MFP  10  but may be satisfied when solely a part of the scanning parameters can be set in the MFP  10  and the remainder of the scanning parameters should be set in the PC. In consideration of such possibility, the scanning parameters which can be set in the MFP  10  may be individually validated to be set in the MFP  10  or validated to be set in the PC.