JP6418191B2 - Display input device, information processing device - Google Patents

Description

  The present invention relates to a display input device and an information processing device including the display input device.

  An information processing apparatus such as a printer may include an operation detection unit such as a touch panel that can detect an operation on a display surface of a display unit. For example, the operation detection unit detects a user operation on the display surface based on a change in capacitance on the display surface.

  Further, an information processing apparatus capable of setting an operation invalid area on a display surface is known as a conventional technique (see Patent Document 1). According to this prior art, the user can operate the display surface with another finger while placing the finger in the operation invalid area. Therefore, the operation burden on the user who operates the display surface is reduced.

International Publication No. 2010/090033

  However, the above-described conventional technology cannot be applied to an information processing apparatus including a so-called single touch operation detection unit that cannot detect simultaneous operations at a plurality of positions on the display surface.

  An object of the present invention is to provide a display input device capable of reducing an operation burden on a user who operates a display surface, even when including an operation detection unit that cannot detect simultaneous operations on a plurality of locations on the display surface, and It is to provide an information processing apparatus.

  A display input device according to one aspect of the present invention includes a display unit, an operation detection unit, and a covering unit. The display unit has a display surface. The operation detection unit detects a user operation on the display surface based on a change in capacitance on the display surface. The covering portion is provided so as to be movable between a first position extended to the inner side of the display surface and a second position retracted outward from an outer peripheral edge of the display surface, and the display surface at the first position. Cover a part of.

  An information processing apparatus according to another aspect of the present invention includes a display input device. The display input device includes a display unit, an operation detection unit, and a covering unit. The display unit has a display surface. The operation detection unit detects a user operation on the display surface based on a change in capacitance on the display surface. The covering portion is provided so as to be movable between a first position extended to the inner side of the display surface and a second position retracted outward from an outer peripheral edge of the display surface, and the display surface at the first position. Cover a part of.

  ADVANTAGE OF THE INVENTION According to this invention, even if it is a case where the operation detection part which cannot detect simultaneous operation to several places of a display surface is provided, it is possible to reduce the operation burden of the user who operates a display surface.

FIG. 1 is a diagram showing a configuration of an image processing apparatus according to an embodiment of the present invention. FIG. 2 is a block diagram showing a system configuration of the image processing apparatus according to the embodiment of the present invention. FIG. 3 is a diagram illustrating a configuration of the operation display unit of the image processing apparatus according to the embodiment of the present invention. FIG. 4 is a diagram illustrating a configuration of the operation display unit of the image processing apparatus according to the embodiment of the present invention. FIG. 5 is a diagram illustrating a configuration of the operation display unit of the image processing apparatus according to the embodiment of the present invention. FIG. 6 is a diagram showing the configuration of the operation display unit of the image processing apparatus according to the embodiment of the present invention. FIG. 7 is a flowchart illustrating an example of the operation detection process executed by the image processing apparatus according to the embodiment of the present invention. FIG. 8 is a diagram illustrating a configuration of an operation display unit of an image processing apparatus according to another embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The following embodiment is an example embodying the present invention, and does not limit the technical scope of the present invention.

[Schematic Configuration of Image Processing Apparatus 10]
First, a schematic configuration of an image processing apparatus 10 according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. Here, FIG. 1 is a schematic cross-sectional view showing the configuration of the image processing apparatus 10. In the following, the vertical direction of the paper in FIG. 1 is defined as the vertical direction D1 of the image processing apparatus 10, the horizontal direction of the paper is defined as the front-rear direction D2 of the image processing apparatus 10, and the depth direction of the paper is defined as the horizontal direction D3 of the image processing apparatus 10. To explain.

  The image processing apparatus 10 is a multifunction machine having a plurality of functions such as a facsimile function and a copy function, as well as a scan function for reading image data from a document and a print function for forming an image based on the image data. Here, the image processing apparatus 10 is an example of an information processing apparatus according to the present invention. The present invention is applicable to information processing apparatuses such as a scanner apparatus, a printer apparatus, a facsimile apparatus, a copier, a personal computer, and a car navigation apparatus.

  As shown in FIGS. 1 and 2, the image processing apparatus 10 includes an ADF (automatic document feeder) 1, an image reading unit 2, an image forming unit 3, a paper feeding unit 4, a control unit 5, and an operation display unit 6. Is provided.

  The ADF 1 includes a document setting unit, a plurality of conveyance rollers, a document pressing unit, and a paper discharge unit, and conveys a document read by the image reading unit 2. The image reading unit 2 includes a document table, a light source, a plurality of mirrors, an optical lens, and a CCD, and can read image data from the document.

  The image forming unit 3 can form a color or monochrome image by electrophotography based on image data read by the image reading unit 2 or image data input from an external information processing apparatus. Specifically, the image forming unit 3 includes a plurality of image forming units corresponding to C (cyan), M (magenta), Y (yellow), and K (black), an optical scanning device, an intermediate transfer belt, and a secondary transfer. A roller, a fixing device, and a paper discharge tray are provided. The sheet feeding unit 4 supplies sheets to the image forming unit 3. In the image forming unit 3, a color or monochrome image is formed on the sheet supplied from the paper feeding unit 4, and the sheet after image formation is discharged to the paper discharge tray. Note that the image forming unit 3 may form an image by another image forming method such as an ink jet method.

  The control unit 5 includes control devices such as a CPU, ROM, RAM, and EEPROM (registered trademark) (not shown). The CPU is a processor that executes various arithmetic processes. The ROM is a non-volatile storage unit in which information such as a control program for causing the CPU to execute various processes is stored in advance. The RAM is a volatile storage unit, and the EEPROM is a non-volatile storage unit. The RAM and the EEPROM are used as a temporary storage memory (working area) for various processes executed by the CPU. In the control unit 5, various control programs stored in advance in the ROM are executed by the CPU. As a result, the image processing apparatus 10 is comprehensively controlled by the control unit 5. The control unit 5 may be an electronic circuit such as an integrated circuit (ASIC), and is a control unit provided separately from the main control unit that comprehensively controls the image processing apparatus 10. May be.

[Configuration of Operation Display Unit 6]
Next, the configuration of the operation display unit 6 will be described with reference to FIGS. Here, FIG. 3 is a schematic plan view showing the configuration of the operation display unit 6. 4 is a cross-sectional view taken along arrow IV-IV in FIG. FIG. 5 is a view showing a state in which the covering portion 63 is extended to the inside of the display surface 611. 6 is a cross-sectional view taken along arrow VI-VI in FIG. 4 and 6, the description of the sheet-like member 632 housed inside the reel 631 is omitted.

  The operation display unit 6 is a user interface in the image processing apparatus 10. As shown in FIG. 1, the operation display unit 6 is provided on the front side in the front-rear direction D <b> 2 from the image reading unit 2 in the upper part of the housing of the image processing apparatus 10.

  2 to 4, the operation display unit 6 includes a display unit 61, a touch sensor 62, a covering unit 63, a first movement detection unit 64, and a second movement detection unit 65. Further, the operation display unit 6 includes power keys and hard keys (not shown) such as a start key.

  The display unit 61 displays various types of information according to control instructions from the control unit 5. For example, the display unit 61 is a liquid crystal display. As shown in FIGS. 3 and 4, the display unit 61 has a display surface 611. Various screens such as operation screens used for user operations are displayed on the display surface 611. For example, the display surface 611 has a rectangular shape.

  For example, as shown in FIG. 3, the operation display unit 6 has an attitude in which the display surface 611 is perpendicular to the vertical direction D1 and the longitudinal direction of the display surface 611 is parallel to the horizontal direction D3. Is provided. In the image processing apparatus 10, the operation display unit 6 may be rotatably supported by a rotation axis parallel to the left-right direction D3, and the attitude of the operation display unit 6 may be adjustable.

  The outer periphery of the display surface 611 is surrounded by the frame 6 </ b> A of the operation display unit 6. For example, the frame 6A is made of resin. For example, as shown in FIG. 3, the frame 6A is formed such that the front side in the front-rear direction D2 is wider in the front-rear direction D2 than the rear side.

  The touch sensor 62 can detect a change in capacitance on the display surface 611. As shown in FIG. 4, the touch sensor 62 is provided on the lower side of the display surface 611 in the vertical direction D1.

  The touch sensor 62 can simultaneously detect capacitance changes at a plurality of locations on the display surface 611. That is, the image processing apparatus 10 can detect a user's multi-touch operation using the touch sensor 62. The image processing apparatus 10 can also detect a single touch operation of the user using the touch sensor 62.

  Here, the multi-touch operation is an operation performed on the display surface 611 by the user using two fingers. For example, the multi-touch operation includes a pinch-out operation and a pinch-in operation. The pinch-out operation is an operation in which a user brings two fingers into contact with the display surface 611 and moves the fingers in a direction away from each other on the display surface 611. In addition, the pinch-in operation is an operation in which the user brings two fingers into contact with the display surface 611 and moves the fingers in a direction approaching each other on the display surface 611. The pinch-out operation and the pinch-in operation are only examples of the multi-touch operation. The multi-touch operation may include other operations different from the pinch-out operation and the pinch-in operation.

  The single touch operation is an operation performed on the display surface 611 by the user using one finger. For example, the single touch operation includes a tap operation and a swipe operation. The tap operation is an operation in which the user makes one finger contact the display surface 611. In addition, the swipe operation is an operation in which the user touches the display surface 611 with one finger and moves the finger on the display surface 611. The tap operation and the swipe operation are only examples of the single touch operation. The single touch operation may include another operation different from the tap operation and the swipe operation.

  For example, the touch sensor 62 includes a plurality of electrodes arranged in a matrix form below the display surface 611. The touch sensor 62 detects a change in capacitance generated in the electrode when a human body such as a finger approaches the electrode. For example, an AC voltage is applied to the electrode from a power source (not shown). The touch sensor 62 detects a change in capacitance of the electrode based on the presence or absence of a current flowing through a capacitor formed between the human body and the electrode when the human body approaches the electrode. The touch sensor 62 outputs an electrical signal indicating a change in capacitance at each of the electrodes. The electrical signal output from the touch sensor 62 is used to detect a user operation by the control unit 5.

  Note that a method different from the method described above may be used as a method for detecting a change in capacitance on the display surface 611 by the touch sensor 62. Further, the touch sensor 62 may be able to detect a change in capacitance at only one place on the display surface 611. In this case, the image processing apparatus 10 can detect only the single touch operation of the user using the touch sensor 62.

  Incidentally, an information processing apparatus capable of setting an operation invalid area on the display surface 611 is known as a conventional technique. According to this prior art, the user can operate the display surface 611 with another finger while placing the finger in the operation invalid area. Therefore, the operation burden on the user who operates the display surface 611 is reduced.

  However, in the above-described conventional technology, when the user operates the display surface 611 using another finger while the finger is placed in the operation invalid area, the operation is detected as the multi-touch operation. Therefore, the above-described conventional technology cannot be applied to an information processing apparatus including the touch sensor 62 that supports only the single touch operation. In the detection process of the multi-touch operation using the touch sensor 62, a calculation process that is more complicated than the detection process of the single touch operation may be performed in the control unit 5. Therefore, when the above-described conventional technology is applied to an information processing apparatus including the touch sensor 62 corresponding to the multi-touch operation, the opportunity for detecting the multi-touch operation increases and the processing load of the control unit 5 increases. There are things to do.

  On the other hand, in the image processing apparatus 10 according to the embodiment of the present invention, as will be described below, even when the touch sensor 62 supports only the single touch operation, the user who operates the display surface 611 can operate. It is possible to reduce the operation burden. In the image processing apparatus 10 according to the embodiment of the present invention, when the touch sensor 62 supports the multi-touch operation, the operation burden on the user who operates the display surface 611 is reduced and the processing load on the control unit 5 is reduced. Can be reduced.

  The covering portion 63 can cover a part of the display surface 611. Specifically, as shown in FIGS. 3 and 4, the covering portion 63 includes a reel 631 and a sheet-like member 632.

  The reel 631 can wind up the sheet-like member 632. For example, as shown in FIGS. 3 and 4, the reel 631 is formed in a substantially cylindrical shape that is long along the left-right direction D <b> 3 of the image processing apparatus 10. As shown in FIG. 4, the reel 631 has a hole 631A formed along the left-right direction D3. Further, the reel 631 has a cylindrical winding portion 631B provided to be rotatable around the hole 631A. The winding unit 631 </ b> B can wind up the sheet-like member 632 extended along the front-rear direction D <b> 2 using a winding spring (not shown). The reel 631 may have a lock mechanism that fixes the sheet-like member 632 in an extended state against the urging force of the take-up spring of the take-up portion 631B.

  The sheet-like member 632 is a belt-like member that is long in the front-rear direction D <b> 2 of the image processing apparatus 10. For example, the sheet-like member 632 is formed of an insulator. One end portion of the sheet-like member 632 in the longitudinal direction is fixed to the outer peripheral surface of the winding portion 631B. Further, as shown in FIGS. 3 and 4, a claw portion 632 </ b> A is provided at the other end portion in the longitudinal direction of the sheet-like member 632.

  For example, as illustrated in FIG. 3, the sheet-like member 632 is disposed at the second position P <b> 2 that is retracted outward from the outer peripheral edge of the display surface 611 in the state of being wound around the reel 631. Further, the sheet-like member 632 is arranged at the first position P1 extended to the inner side of the display surface 611 as shown in FIG. 5 by being pulled out from the reel 631 to the rear side in the front-rear direction D2. The Thereby, a partial region of the display surface 611 is covered by the sheet-like member 632 that extends to the inside of the display surface 611 along the front-rear direction D2. Further, the user can arrange the sheet-like member 632 at an arbitrary position in the front-rear direction D2 of the display surface 611 by adjusting the amount of the sheet-like member 632 drawn from the reel 631 along the front-rear direction D2. It is. That is, in the covering portion 63, the sheet-like member 632 is movable along the front-rear direction D2 passing through the first position P1 and the second position P2. Note that the user can easily pull out the sheet-like member 632 from the reel 631 by using the claw portion 632A. Further, the sheet-like member 632 pulled out from the reel 631 is taken up by the take-up spring of the take-up portion 631B (see FIG. 4). Here, the front-rear direction D2 is an example of the first direction in the present invention.

  As shown in FIG. 6, in the image processing apparatus 10, when the user operates the display surface 611 using another finger with a finger F such as a thumb placed on the sheet-like member 632, the sheet-like member 632. The sheet-like member 632 inhibits the change in electrostatic capacity on the display surface 611 due to the finger F placed on the sheet. Note that the sheet-like member 632 may contact the display surface 611 in a state where the finger F is placed.

  Accordingly, in the image processing apparatus 10, when the user operates the display surface 611 using another finger while the finger is placed on the sheet-like member 632, the operation is detected as the single touch operation. Therefore, even when the touch sensor 62 supports only the single touch operation, it is possible to reduce the operation burden on the user who operates the display surface 611. Further, when the touch sensor 62 supports the multi-touch operation, it is possible to reduce the operation load on the user who operates the display surface 611 and reduce the processing load on the control unit 5.

  Here, in the image processing apparatus 10, the reel 631 is provided to be movable along the left-right direction D3. Specifically, as shown in FIG. 3, a groove 6B is formed along the left-right direction D3 on the front side in the front-rear direction D2 of the frame 6A. For example, as shown in FIG. 4, the groove 6 </ b> B is formed in a curved shape along the shape of the bottom of the reel 631.

  As shown in FIGS. 3 and 4, the groove 6 </ b> B is provided with a rod-like support member 6 </ b> C extending along the left-right direction D <b> 3 of the image processing apparatus 10. The support member 6C supports the reel 631 so as to be slidable along the left-right direction D3. For example, the support member 6C is formed of a resistor having electric resistance. For example, the support member 6C is formed of a metal such as steel. Specifically, as shown in FIG. 4, the reel 631 is supported by the support member 6C so as to be slidable in the left-right direction D3 when the support member 6C is inserted through the hole 631A. Thereby, the user can arrange the sheet-like member 632 at an arbitrary position in the left-right direction D3 on the display surface 611. Here, the left-right direction D3 is an example of the second direction in the present invention. The support member 6C is an example of a support portion in the present invention.

  4, in the image processing apparatus 10, a bush 631C is provided between the peripheral surface of the hole 631A of the reel 631 and the peripheral surface of the support member 6C. The bush 631C increases the sliding resistance with the support member 6C when the reel 631 is slid along the left-right direction D3. This restricts the movement of the reel 631 along the left-right direction D3. Therefore, the movement of the finger placed on the sheet-like member 632 is restricted, and the operability in the operation using other fingers is improved. Here, the bush 631C is an example of a movement restricting portion in the present invention. Note that the sliding resistance between the reel 631 and the support member 6C is set to an appropriate value in consideration of the balance between the improvement of operability due to the restriction of the movement of the reel 631 and the ease of movement of the reel 631. Good. Further, the bush 631C may be formed of an appropriate material having a set sliding resistance.

  In the image processing apparatus 10, a latch mechanism that temporarily stops the movement of the reel 631 along the left-right direction D3 at predetermined intervals instead of the bush 631C is formed between the reel 631 and the groove 6B or the support member 6C. It may be provided between them. Here, the latch mechanism is another example of the movement restricting portion in the present invention.

  Further, in the image processing apparatus 10, the groove 6B may not be provided in the frame 6A. For example, the frame 6A may have a pair of protrusions that protrude forward from the front corners in the front-rear direction D2, and the support member 6C may be supported by each of the protrusions.

  In the image processing apparatus 10, the support member 6C may not be provided on the frame 6A. For example, the reel 631 may be slidably supported along the left-right direction D3 by the groove 6B. Here, the groove portion 6B is another example of the support portion in the present invention.

  Further, in the image processing apparatus 10, the reel 631 may be fixedly disposed at a predetermined position in the left-right direction D3 of the frame 6A. Further, the length of the reel 631 and the sheet-like member 632 in the left-right direction D3 may exceed the length of the display surface 611 in the left-right direction D3.

  The first movement detection unit 64 detects the amount of movement of the sheet-like member 632 in the front-rear direction D2. For example, the first movement detection unit 64 detects the amount of movement of the sheet-like member 632 from the second position P2. For example, as shown in FIG. 3, the reel 631 has a variable resistor 631D. The variable resistor 631D is connected to the winding unit 631B, and the resistance value changes according to the rotation amount of the winding unit 631B. For example, the first movement detection unit 64 is an electric circuit that outputs an electric signal corresponding to the resistance value of the variable resistor 631D.

  For example, as shown in FIG. 4, a first electrode 6D and a second electrode 6E are provided on the front side surface in the front-rear direction D2 of the groove 6B. The first electrode 6D and the second electrode 6E are elongated along the left-right direction D3. The first electrode 6D and the second electrode 6E are electrically connected to a pair of electrodes (not shown) provided on the reel 631. The pair of electrodes is electrically connected to a variable resistor 631D (see FIG. 3). The first movement detection unit 64 outputs an electrical signal corresponding to the resistance value of the variable resistor 631D electrically connected via the first electrode 6D and the second electrode 6E.

  The second movement detection unit 65 detects the amount of movement of the reel 631 in the left-right direction D3. For example, the second movement detection unit 65 detects the amount of movement of the reel 631 from the third position P3 (see FIG. 3) where the left end of the support member 6C in the left-right direction D3 is disposed. For example, the second movement detection unit 65 supports the distance corresponding to the distance from the third position P3 to the fourth position P4 (see FIG. 3) where the left end of the reel 631 in the left-right direction D3 contacts the support member 6C. It is an electric circuit that outputs an electric signal corresponding to the resistance value of the member 6C.

  For example, as shown in FIG. 4, the third electrode 6F is provided on the front side surface in the front-rear direction D2 of the groove 6B. The third electrode 6F is elongated along the left-right direction D3. The third electrode 6F is electrically connected to an electrode (not shown) provided on the reel 631. The electrode is electrically connected to the support member 6C at the fourth position P4. In addition, the second movement detection unit 65 is electrically connected to the support member 6C at the third position P3. The second movement detection unit 65 outputs an electrical signal corresponding to a resistance value corresponding to the distance from the third position P3 to the fourth position P4 of the support member 6C electrically connected via the third electrode 6F. .

  The electrical signals output from the first movement detection unit 64 and the second movement detection unit 65 are used by the control unit 5 to detect the covering region covered with the covering unit 63 on the display surface 611.

  On the other hand, the ROM of the control unit 5 stores in advance an operation detection program for causing the CPU to execute an operation detection process (see the flowchart of FIG. 7) described later. The operation detection program is recorded on a computer-readable recording medium such as a CD, a DVD, or a flash memory, and is read from the recording medium and installed in a storage unit such as the EEPROM of the control unit 5. It may be.

  Then, as shown in FIG. 2, the control unit 5 includes a first display processing unit 51, a region detection unit 52, a second display processing unit 53, an operation detection unit 54, a process execution unit 55, and a notification processing unit 56. Including. Specifically, the control unit 5 executes the operation detection program stored in the ROM using the CPU. Thereby, the control unit 5 functions as the first display processing unit 51, the region detection unit 52, the second display processing unit 53, the operation detection unit 54, the process execution unit 55, and the notification processing unit 56. Here, a device including the control unit 5 and the operation display unit 6 is an example of a display input device in the present invention.

  The first display processing unit 51 displays an operation screen used for a user operation on the display surface 611. For example, the first display processing unit 51 displays the operation screen on the display surface 611 when the power of the image processing apparatus 10 is turned on or when the operation mode of the image processing apparatus 10 shifts from the sleep mode to the normal mode. Display. For example, a plurality of operation icons and a background image are displayed on the operation screen.

  The area detection unit 52 detects a covered area covered with the covering part 63 on the display surface 611. For example, the region detection unit 52 detects the covering region based on electrical signals output from the first movement detection unit 64 and the second movement detection unit 65.

  The second display processing unit 53 displays an operation invalid area R1 (see FIG. 5) in a predetermined range including the outer peripheral area of the covering area on the display surface 611 so as to be distinguishable from other areas. Specifically, the second display processing unit 53 specifies the operation invalid region R1 based on the covered region detected by the region detection unit 52. For example, the operation invalid area R1 is an area within a predetermined distance range from the outer peripheral area of the covering area. The operation invalid area R1 may be an area that does not include the covered area. The specific distance may be arbitrarily set according to a user operation on the operation display unit 6. Here, the second display processing unit 53 is an example of the display processing unit in the present invention.

  For example, when the operation screen is displayed on the display surface 611, the second display processing unit 53 changes the display of the specified operation invalid area R1 to a translucent display. Note that the second display processing unit 53 may execute a blurring process or a mosaic process on the specified operation invalid area R1. In addition, the second display processing unit 53 may change the display color of the specified operation invalid area R1. Further, the second display processing unit 53 may perform a filling process on the specified operation invalid area R1. Further, the second display processing unit 53 may turn off the display of the specified operation invalid area R1.

  The operation detection unit 54 detects a user operation on the display surface 611 based on a change in capacitance on the display surface 611. Specifically, the operation detection unit 54 detects a user operation on the display surface 611 based on an electrical signal output from the touch sensor 62.

  For example, the operation detection unit 54 detects the multi-touch operation including the pinch-out operation and the pinch-in operation based on a change in capacitance on the display surface 611. Further, the operation detection unit 54 detects the single touch operation including the tap operation and the swipe operation based on a change in capacitance on the display surface 611.

  Further, the operation detection unit 54 does not detect a user operation in the operation invalid area R1.

  The process execution unit 55 executes a process according to the user operation detected by the operation detection unit 54.

  For example, the process execution unit 55 executes a process corresponding to the operated operation icon when the tap operation on any one of the plurality of operation icons displayed on the operation screen is detected. To do. In addition, when the swipe operation on the operation screen is detected, the process execution unit 55 displays the operation screen displayed on the display surface 611 as another operation screen in which the displayed operation icon and background image are different. Execute the process to change to.

  Further, the process execution unit 55 executes a process of enlarging an image included in the operation screen displayed on the display surface 611 when the pinch-out operation for the operation screen is detected. Further, the process execution unit 55 executes a process of reducing an image included in the operation screen displayed on the display surface 611 when the pinch-in operation on the operation screen is detected.

  The operation detection unit 54 may detect a user operation in the operation invalid region R1 detected by the region detection unit 52. In this case, even when the user operation detected by the operation detection unit 54 is performed in the operation invalid region R1, the process execution unit 55 does not execute the process according to the user operation. Good.

  When the change in capacitance is detected in the operation invalid region R1, the notification processing unit 56 notifies that fact. Specifically, the notification processing unit 56 detects a change in capacitance in the operation invalid region R <b> 1 based on the electrical signal output from the touch sensor 62.

  For example, the notification processing unit 56 changes the display mode of the operation invalid region R1 when a change in capacitance is detected in the operation invalid region R1. For example, the notification processing unit 56 blinks the display of the operation invalid region R1 when a change in capacitance is detected in the operation invalid region R1.

  Note that the notification processing unit 56 may cause the display surface 611 to display a message indicating that an operation has been detected in the operation invalid region R1 when a change in capacitance is detected in the operation invalid region R1. Further, the notification processing unit 56 may sound a preset warning sound when a change in capacitance is detected in the operation invalid region R1. Further, when the operation display unit 6 includes a vibration unit that vibrates the display surface 611, the notification processing unit 56 uses the vibration unit to display the display surface when a change in capacitance is detected in the operation invalid region R1. 611 may be vibrated.

[Operation detection processing]
Hereinafter, an example of the procedure of the operation detection process executed by the control unit 5 in the image processing apparatus 10 will be described with reference to FIG. Here, steps S1, S2,... Represent processing procedure (step) numbers executed by the control unit 5. For example, the operation detection process is executed when the power of the image processing apparatus 10 is turned on or when the operation mode shifts from the sleep mode to the normal mode.

<Step S1>
First, in step S <b> 1, the control unit 5 displays the operation screen used for user operation on the display surface 611. Here, the process of step S <b> 1 is executed by the first display processing unit 51 of the control unit 5.

<Step S2>
In step S <b> 2, the control unit 5 determines whether a part of the display surface 611 is covered with the covering unit 63. For example, the controller 5 determines whether or not the sheet-like member 632 has moved from the second position P <b> 2 based on the electrical signal output from the first movement detector 64, i.e., part of the display surface 611 is covered by the cover 63. Determine if it is covered.

  In addition, when the process of step S2 is performed after the process of steps S3 and S4 described below is performed, the control unit 5 determines whether or not the range of the covering area on the display surface 611 has been changed by the user. to decide.

  Here, if the control part 5 judges that a part of display surface 611 was covered with the coating | coated part 63 (Yes side of S2), it will transfer a process to step S3. Moreover, if a part of display surface 611 is not covered with the coating | coated part 63 (No side of S2), the control part 5 will transfer a process to step S5.

<Step S3>
In step S <b> 3, the control unit 5 detects the covering region on the display surface 611. For example, the control unit 5 detects the covering region based on electrical signals output from the first movement detection unit 64 and the second movement detection unit 65. Here, the process of step S <b> 3 is executed by the region detection unit 52 of the control unit 5.

<Step S4>
In step S4, the control unit 5 changes the display mode of the operation invalid area R1 on the operation screen. Specifically, the control unit 5 specifies the operation invalid area R1 based on the covered area detected in step S3. In addition, the control unit 5 changes the display of the specified operation invalid area R1 to a translucent display. Here, the process of step S <b> 4 is executed by the second display processing unit 53 of the control unit 5. Accordingly, the user can perform an operation while avoiding the operation invalid area R1 on the display surface 611, and a useless operation to the operation invalid area R1 by the user is avoided.

<Step S5>
In step S5, the control unit 5 determines whether or not the capacitance on the display surface 611 has changed. Specifically, the control unit 5 determines whether or not the capacitance on the display surface 611 has changed based on the electrical signal output from the touch sensor 62.

  Here, if the control part 5 judges that the electrostatic capacitance in the display surface 611 has changed (Yes side of S5), it will transfer a process to step S6. Moreover, if the electrostatic capacitance in the display surface 611 is not changing (No side of S5), the control part 5 will transfer a process to step S9.

<Step S6>
In step S6, the control unit 5 determines whether or not the change in capacitance detected in step S5 is in the operation invalid region R1.

  If the control unit 5 determines that the change in capacitance detected in step S5 is in the operation invalid region R1 (Yes in S6), the process proceeds to step S61. If the change in capacitance detected in step S5 is not in the operation invalid region R1 (No side in S6), the control unit 5 shifts the process to step S7.

<Step S7>
In step S <b> 7, the control unit 5 detects a user operation on the display surface 611 based on the change in capacitance detected in step S <b> 5. For example, the control unit 5 detects the multi-touch operation and the single touch operation based on a change in capacitance on the display surface 611. Here, the process of step S <b> 7 is executed by the operation detection unit 54 of the control unit 5.

<Step S8>
In step S8, the control unit 5 executes a process according to the user operation detected in step S7. For example, the control unit 5 executes processing corresponding to the operated operation icon when the tap operation on any one of the plurality of operation icons displayed on the operation screen is detected. . Here, the process of step S <b> 8 is executed by the process execution unit 55 of the control unit 5.

  On the other hand, in the operation detection process, when it is determined in step S6 that the change in capacitance is in the operation invalid area R1, the process in step S7 is not executed. Thereby, the occurrence of an erroneous operation due to the contact between the user's finger placed on the sheet-like member 632 and the display surface 611 is suppressed.

  In addition, the process of step S6 may be performed after execution of the process of step S7. In this case, in step S6, it is determined whether or not the user operation detected in step S7 is performed in the operation invalid area R1.

<Step S61>
In step S61, the control unit 5 notifies that a change in capacitance has been detected in the operation invalid region R1. For example, the control unit 5 blinks the display of the operation invalid area R1. Here, the process of step S <b> 61 is performed by the notification processing unit 56 of the control unit 5. As a result, the user can recognize that the finger placed on the sheet-like member 632 is in contact with the display surface 611 and prompt the user to return the finger to the sheet-like member 632. Therefore, the occurrence of an erroneous operation due to the contact between the user's finger placed on the sheet-like member 632 and the display surface 611 is further suppressed. Further, since the contact state between the user's finger and the display surface 611 is resolved early, the high load state of the control unit 5 resulting from the execution of the detection process of the multi-touch operation is resolved early.

<Step S9>
In step S <b> 9, the control unit 5 determines whether or not a user operation for ending the display of the operation screen displayed on the display surface 611 has been performed. For example, when the power of the image processing apparatus 10 is shut off, or when a user operation that instructs the operation display unit 6 to shift from the normal mode to the sleep mode is performed, the control unit 5 performs the operation. It is determined that the user's operation to end the screen display has been performed.

  Here, when the control unit 5 determines that the user's operation to end the display of the operation screen has been performed (Yes in S9), the control unit 5 ends the operation detection process. If the user's operation to end the display of the operation screen has not been performed (No side of S9), the control unit 5 shifts the process to step S2 and displays the operation screen. Until the operation is performed, the user waits for a change in the range of the covering region or a change in the capacitance on the display surface 611.

  As described above, in the image processing apparatus 10, the operation display unit 6 is provided with the covering unit 63 that covers a part of the display surface 611. Thus, the user can operate the display surface 611 using another finger while the finger is placed on the covering portion 63. Therefore, even when the touch sensor 62 supports only the single touch operation, it is possible to reduce the operation burden on the user who operates the display surface 611. Further, when the touch sensor 62 supports the multi-touch operation, it is possible to reduce the operation load on the user who operates the display surface 611 and reduce the processing load on the control unit 5.

  In the image processing apparatus 10, the reel 631 may not be provided on the frame 6A. For example, as illustrated in FIG. 8, an accommodation portion 6G that accommodates the sheet-like member 632 may be provided in the frame 6A. In this case, the sheet-like member 632 is another example of the covering portion in the present invention.

1 ADF
2 image reading unit 3 image forming unit 4 paper feeding unit 5 control unit 6 operation display unit 10 image processing device 51 first display processing unit 52 region detection unit 53 second display processing unit 54 operation detection unit 55 process execution unit 56 notification process Unit 61 display unit 611 display surface 62 touch sensor 63 covering unit 631 reel 632 sheet-like member 64 first movement detection unit 65 second movement detection unit

Claims (10)

A display unit having a display surface;
An operation detection unit that detects a user operation on the display surface based on a change in capacitance on the display surface;
Provided between a first position extended from a position outside the outer peripheral edge of the display surface to the inner side of the display surface and a second position retracted outward from the outer peripheral edge of the display surface; A covering portion covering a part of the display surface at a first position;
A display input device comprising:   The said coating | coated part is provided so that a movement is possible along the 2nd direction perpendicular | vertical to the 1st direction which passes the said 1st position and the said 2nd position, and parallel to the said display surface. Display input device. The display surface is rectangular,
The second direction is parallel to one side of the display surface,
3. The display according to claim 2, wherein the display input device further includes a support portion that extends along the second direction on an outer periphery of the display surface and supports the covering portion so as to be slidable in the second direction. Input device.   The display input device according to claim 2, further comprising a movement restriction unit capable of restricting movement of the covering unit along the second direction.   The covering portion includes a reel and a sheet-like member wound around the reel, and the sheet-like member is disposed at the first position by being pulled out from the reel, and is wound around the reel. The display input device according to claim 1, which is disposed at the second position.   The display input device according to claim 1, wherein a part or all of the covering portion is formed of an insulator. An area detecting unit for detecting a covering area covered with the covering part on the display surface;
The display input device according to claim 1, wherein the operation detection unit does not detect a user operation in an operation invalid area in a predetermined range including an outer peripheral area of the covering area.   The display input device according to claim 7, further comprising a display processing unit that displays the operation invalid area on the display surface so as to be distinguishable from other areas.   The display input device according to claim 7 or 8, further comprising a notification processing unit that notifies that change in capacitance is detected in the operation invalid region. An information processing apparatus comprising the display input device according to claim 1.

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