Display input device and information processing apparatus

Abstract

To provide a display input device and an information processor for preventing any erroneous operation while reducing the operation labor of a user who operates a display surface.SOLUTION: An image processing apparatus includes a display part 61 having a display surface, a finger rest part 63 provided movably on the display surface with a user's finger placed thereon, a position detection part 66 for detecting the position of the finger rest part 63, and an operation detection part 53 for detecting a user's operation on the display surface on the basis of the user's operation of pressing the finger rest part 63.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a display input device and an information processing device equipped with the display input device. [Background technology]

[0002] An information processing device such as a printer may include a touch panel that can detect operations on a display surface of a display unit. For example, the information processing device may detect a user's operations on the display surface based on a change in capacitance on the display surface.

[0003] Furthermore, an information processing device capable of setting an operation invalid area on a display surface is known as a conventional technology (see Patent Document 1). This conventional technology allows a user to operate the display surface with other fingers while placing a finger on the operation invalid area. This reduces the operational burden on the user operating the display surface. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] International Publication No. 2010 / 090033 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the above-mentioned conventional technology, because the invalid operation area is fixed, there is a possibility that the finger may move out of the invalid operation area depending on the usage situation. For example, when touching a certain location on the display surface, the thumb can be placed in the invalid operation area and the index finger can touch appropriately, but when touching another location on the display surface with the index finger, the thumb may move out of the invalid operation area. If the thumb moves out of the invalid operation area, it may cause erroneous operation, such as detecting the position of the thumb.

[0006] An object of the present invention is to provide a display input device and an information processing device that can reduce the operational burden on a user who operates a display screen and prevent operational errors. [Means for solving the problem]

[0007] A display input device according to one aspect of the present invention includes a display unit, a finger rest unit, a position detection unit, and an operation detection unit. The display unit has a display surface. The finger rest unit is provided so as to be movable on the display surface with a user's finger placed thereon. The position detection unit detects the position of the finger rest unit. The operation detection unit detects an operation by the user on the display surface based on the user pressing down on the finger rest unit.

[0008] An information processing device according to another aspect of the present invention includes the display input device. [Effects of the Invention]

[0009] According to the present invention, it is possible to provide a display input device and an information processing device that can reduce the operational burden on a user who operates a display screen and prevent erroneous operations. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a diagram showing the configuration of an image processing apparatus according to an embodiment of the present invention. [Figure 2] FIG. 2 is a block diagram showing the system configuration of an image processing apparatus according to an embodiment of the present invention. [Figure 3] FIG. 3 is a diagram showing the configuration of the operation display unit of the image processing apparatus according to the embodiment of the present invention. [Figure 4] FIG. 4 is a diagram showing the configuration of the operation display unit of the image processing apparatus according to the embodiment of the present invention. [Figure 5] FIG. 5 is a diagram showing the configuration of the operation display unit of the image processing apparatus according to the embodiment of the present invention. [Figure 6] FIG. 6 is a diagram showing the configuration of a finger rest unit of the image processing device according to the embodiment of the present invention. [Figure 7] FIG. 7 is a diagram showing the configuration of a finger rest unit of an image processing device according to an embodiment of the present invention. [Figure 8] FIG. 8 is a diagram showing a specific example of a pinch operation in the image processing device according to the embodiment of the present invention. [Figure 9] FIG. 9 is a diagram showing a specific example of a pinch operation in the image processing device according to the embodiment of the present invention. [Figure 10] FIG. 10 is a flowchart showing an example of an operation detection process executed by the image processing device according to the embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. Note that the following embodiment is an example of the present invention, and does not limit the technical scope of the present invention.

[0012] [Schematic configuration of image processing device 10] First, a schematic configuration of an image processing device 10 according to an embodiment of the present invention will be described with reference to Figures 1 and 2. Figure 1 is a cross-sectional view showing the configuration of the image processing device 10. In the following description, the up-down direction on the paper surface of Figure 1 is defined as the up-down direction D1 of the image processing device 10, the left-right direction on the paper surface is defined as the front-rear direction D2 of the image processing device 10, and the depth direction on the paper surface is defined as the left-right direction D3 of the image processing device 10.

[0013] The image processing device 10 is a multifunction device that has multiple functions, such as a scanning function for reading image data from an original, a printing function for forming an image based on the image data, a facsimile function, and a copy function. The image processing device 10 is an example of an information processing device according to the present invention. The present invention is applicable to information processing devices such as scanners, printers, facsimile machines, copy machines, personal computers, and car navigation systems.

[0014] As shown in FIGS. 1 and 2, the image processing device 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, an operation display unit 6, and a storage unit 7.

[0015] The ADF 1 includes a document setting section, multiple transport rollers, a document holder, and a paper discharge section, and transports documents to be read by the image reading section 2. The image reading section 2 includes a document table, a light source, multiple mirrors, an optical lens, and a CCD, and is capable of reading image data from documents.

[0016] The image forming unit 3 is capable of forming 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 device. 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, a secondary transfer roller, a fixing device, and a paper output tray. The paper feed 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 feed unit 4, and the sheet after image formation is output to the paper output tray. Note that the image forming unit 3 may also form images by other image forming methods, such as an inkjet method.

[0017] The control unit 5 includes control devices such as a CPU, ROM, RAM, and EEPROM (registered trademark), all of which are not shown. The CPU is a processor that executes various types of arithmetic processing. The ROM is a non-volatile storage unit that pre-stores information such as control programs for causing the CPU to execute various processes. The RAM is a volatile storage unit, and the EEPROM is a non-volatile storage unit. The RAM and EEPROM are used as temporary storage memories (work areas) for the various processes executed by the CPU. In the control unit 5, the CPU executes various control programs pre-stored in the ROM. This allows the control unit 5 to comprehensively control the image processing device 10. The control unit 5 may be configured with electronic circuits such as an integrated circuit (ASIC), or may be a control unit provided separately from a main control unit that comprehensively controls the image processing device 10.

[0018] The storage unit 7 is a nonvolatile storage device, such as a nonvolatile memory such as a flash memory or an EEPROM (registered trademark), a solid state drive (SSD), or a hard disk drive (HDD).

[0019] [Configuration of operation display unit 6] Next, the configuration of the operation and display unit 6 will be described with reference to Figures 1 to 9. Figures 3 to 5 are schematic plan views showing the configuration of the operation and display unit 6.

[0020] The operation display unit 6 is a user interface in the image processing device 10. As shown in Fig. 1, the operation display unit 6 is provided on the upper part of the housing of the image processing device 10, forward of the image reading unit 2 in the front-rear direction D2.

[0021] 2 to 4, the operation display unit 6 includes a display unit 61, a touch sensor 62, a finger rest unit 63, a holding unit 64, a frame unit 65, a position detection unit 66, and a pinch operation unit 67. The operation display unit 6 also includes hard keys (not shown) such as a power key and a start key.

[0022] The display unit 61 displays various types of information in response to control instructions from the control unit 5. For example, the display unit 61 is a liquid crystal display. As shown in FIGS. 3 to 5, the display unit 61 has a display surface 611. On the display surface 611, various screens such as an operation screen used for user operations are displayed. For example, the display surface 611 is rectangular.

[0023] 3, the operation display unit 6 is provided in the image processing device 10 in an orientation in which the display surface 611 is perpendicular to the up-down direction D1 and the longitudinal direction of the display surface 611 is parallel to the left-right direction D3. Note that in the image processing device 10, the operation display unit 6 may be rotatably supported by a rotation axis parallel to the left-right direction D3, and the orientation of the operation display unit 6 may be adjustable.

[0024] The outer periphery of the display surface 611 is surrounded by a frame 6A of the operation display unit 6. For example, the frame 6A is formed of resin. For example, as shown in FIG. 3, the frame 6A is formed so that the front side in the front-rear direction D2 is wider than the rear side in the front-rear direction D2.

[0025] Touch sensor 62 is capable of detecting a change in capacitance on display surface 611. Touch sensor 62 is provided below display surface 611 in the up-down direction D1. Note that touch sensor 62 may also be provided above the liquid crystal panel.

[0026] That is, the image processing device 10 can detect a touch operation on the display surface 611 by the user using the touch sensor 62.

[0027] For example, the touch sensor 62 has a plurality of electrodes arranged in a matrix below the display surface 611. The touch sensor 62 detects a change in capacitance that occurs in the electrodes when a human body, such as a finger, approaches the electrodes. For example, an AC voltage is applied to the electrodes from a power source (not shown). The touch sensor 62 detects a change in capacitance in the electrodes based on the presence or absence of a current flowing through a capacitor formed between the human body and the electrodes when the human body approaches the electrodes. The touch sensor 62 then outputs an electrical signal that indicates the change in capacitance in each of the electrodes. The electrical signal output from the touch sensor 62 is used by the control unit 5 to detect a user operation.

[0028] The method of detecting the change in capacitance on the display surface 611 by the touch sensor 62 may be different from the method described above.

[0029] Incidentally, an information processing device capable of setting an operation invalid area on the display surface 611 is known as a conventional technology. According to this conventional technology, the user can operate the display surface 611 with other fingers while placing a finger on the operation invalid area. This reduces the operational burden on the user who operates the display surface 611.

[0030] However, in the above-mentioned conventional technology, because the invalid operation area is fixed, there are cases where the finger moves out of the invalid operation area depending on the usage situation. For example, when touching a certain location on the display surface 611, the thumb can be placed in the invalid operation area and the index finger can touch appropriately, but when touching another location on the display surface 611 with the index finger, the thumb may move out of the invalid operation area. If the thumb moves out of the invalid operation area, it may cause erroneous operations, such as detecting the position of the thumb.

[0031] In contrast to this, the image processing device 10 according to the embodiment of the present invention can reduce the operational burden on the user who operates the display surface 611 while preventing operational errors, as will be described below.

[0032] The finger rest 63 is a movable body that can move in the front-to-back direction D2 and the left-to-right direction D3 on the display surface 611, and has a configuration that allows a user's finger to be placed thereon. That is, the finger rest 63 is provided so as to be movable on the display surface 611 with the user's finger placed thereon. Note that the finger rest 63 may be smaller than a human finger. The shape of the finger rest 63 may be any of an ellipse, a circle, a rectangle, and a polygon.

[0033] The holding portion 64 is a holding member that movably holds the finger rest portion 63. The holding portion 64 includes a first holding portion 64a extending in the left-right direction D3 and a second holding portion 64b extending in the front-rear direction D2. The first holding portion 64a and the second holding portion 64b are movably fixed to a frame portion 65 provided along the frame 6A. The frame portion 65 may be provided inside the frame 6A (see FIG. 3, etc.) or on the upper surface of the frame 6A. As shown in FIG. 6, the holding portion 64 is disposed above the touch sensor 62 with a gap therebetween.

[0034] The first retaining portion 64a has a left end attached to the left frame of the frame portion 65 and a right end attached to the right frame of the frame portion 65, and is movable in the front-to-rear direction D2 relative to the frame portion 65 (see FIG. 3). The second retaining portion 64b has a front end attached to the front frame of the frame portion 65 and a rear end attached to the rear frame of the frame portion 65, and is movable in the left-to-right direction D3 relative to the frame portion 65 (see FIG. 3). The method of connecting the retaining portion 64 and the frame portion 65 is not limited, and well-known methods can be applied. In this way, the first retaining portion 64a and the second retaining portion 64b are provided so as to be movable independently relative to the frame portion 65.

[0035] The finger rest 63 is provided at the intersection of the first holding portion 64a and the second holding portion 64b. Specifically, the first holding portion 64a is inserted into a through-hole that penetrates the finger rest 63 in the left-right direction D3, and the second holding portion 64b is inserted into a through-hole that penetrates the finger rest 63 in the front-rear direction D2. This allows the finger rest 63 to move in the front-rear direction D2 and the left-right direction D3 at the intersection of the first holding portion 64a and the second holding portion 64b (see FIG. 4).

[0036] For example, as shown in FIG. 4, the user can place a finger on the placement portion 63a (see FIG. 6) of the finger placement portion 63 and move the finger placement portion 63 in the front-to-back direction D2 and the left-to-right direction D3 on the display surface 611.

[0037] The position detection unit 66 detects the position of the finger rest unit 63. Specifically, as shown in FIG. 5, the first holding unit 64a is connected to a Y-position detection unit 66y, and the second holding unit 64b is connected to an X-position detection unit 66x. The Y-position detection unit 66y detects the position of the first holding unit 64a in the front-rear direction D2 (Y position, Y coordinate). The Y-position detection unit 66y includes, for example, a sensor capable of detecting the left end of the first holding unit 64a, and detects the Y-position of the first holding unit 64a based on the detection result of the sensor. The X-position detection unit 66x detects the position of the second holding unit 64b in the left-right direction D3 (X position, X coordinate). The X-position detection unit 66x includes, for example, a sensor capable of detecting the front end of the second holding unit 64b, and detects the X-position of the second holding unit 64b based on the detection result of the sensor.

[0038] The position detection unit 66 identifies the position (X coordinate, Y coordinate) of the finger rest unit 63 based on the detection results (X position and Y position) of the X position detection unit 66x and the Y position detection unit 66y. The position detection unit 66 outputs the detected position information of the finger rest unit 63 to the control unit 5. The position detection unit 66 outputs the position information to the control unit 5 in real time in accordance with the movement of the finger rest unit 63.

[0039] An operation detection program for causing the CPU to execute an operation detection process (see FIG. 10) described below is stored in advance in the ROM of the control unit 5. The operation detection program may be recorded on a computer-readable recording medium such as a CD, DVD, or flash memory, and may be read from the recording medium and installed in a storage unit such as the EEPROM of the control unit 5.

[0040] 2, the control unit 5 includes a display processing unit 51, a setting processing unit 52, an operation detection unit 53, and a process execution unit 54. Specifically, the control unit 5 uses the CPU to execute the operation detection program stored in the ROM. As a result, the control unit 5 functions as the display processing unit 51, the setting processing unit 52, the operation detection unit 53, and the process execution unit 54. Here, a device including the control unit 5 and the operation display unit 6 is an example of a display input device according to the present invention.

[0041] The display processing unit 51 displays an operation screen used for user operations on the display surface 611. For example, when the image processing device 10 is powered on or when the operation mode of the image processing device 10 transitions from sleep mode to normal mode, the display processing unit 51 displays the operation screen on the display surface 611. For example, a plurality of operation icons and a background image are displayed on the operation screen.

[0042] The setting processing unit 52 sets a detection area for detecting a user's operation (touch operation) on the display surface 611. Specifically, the setting processing unit 52 sets the detection area based on position information of the finger rest unit 63 output from the position detection unit 66. For example, as shown in FIG. 5, when the setting processing unit 52 acquires the position P0 (X position and Y position) of the finger rest unit 63, the setting processing unit 52 sets a predetermined range centered on the position P0 as the detection area A1. In the example shown in FIG. 5, the setting processing unit 52 sets the detection area A1 to an area that has a shape corresponding to the shape of the finger rest unit 63 and is slightly larger than the finger rest unit 63. In another embodiment, the setting processing unit 52 may set the detection area A1 to an area the same size as the finger rest unit 63 or an area smaller than the finger rest unit 63. Furthermore, the setting processing unit 52 sets the area of ​​the display surface 611 excluding the detection area A1 as an invalid area A2 in which the user's operation (touch operation) is not detected.

[0043] The operation detection unit 53 detects a user operation (touch operation) on the display surface 611 based on an operation of the user pressing the finger rest portion 63. For example, the operation detection unit 53 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 53 detects a user operation in the detection area A1 of the display surface 611 based on an electrical signal output from the touch sensor 62. Furthermore, the operation detection unit 53 detects touch operations such as tapping and swiping based on the change in capacitance on the display surface 611.

[0044] As shown in FIG. 6, the finger rest 63 includes a rest 63a on which a user places a finger, a space 63b disposed on the upper side of the main body of the finger rest 63, and a conductive portion 63c disposed on the lower side of the main body. The finger rest 63 is made of an elastic material such as rubber and is deformable when pressed down with a finger. The conductive portion 63c is made of an elastic material such as rubber and is conductive. With the above configuration, as shown in FIG. 7, for example, when a user presses down on the finger rest 63 with their finger, the space 63b is compressed, bringing the finger closer to the conductive portion 63c. This changes the capacitance between the finger and the touch sensor 62. The main body of the finger rest 63 may be made of a transparent material. This allows the user to see the display content displayed below the finger rest 63.

[0045] The operation detection unit 53 detects a user operation on the display surface 611 when the user presses the finger rest portion 63 in the detection area A1. For example, the operation detection unit 53 detects an operation in which the user presses the finger rest portion 63 as the touch operation based on the change in capacitance. The operation detection unit 53 also detects the position (X position and Y position) of the finger rest portion 63 when the change in capacitance is detected as the user's operation position. On the display surface 611, the user places a finger on the placement portion 63a of the finger rest portion 63, moves the finger rest portion 63 to a desired position, and presses the finger rest portion 63. The operation detection unit 53 detects the position where the user presses the finger rest portion 63. Furthermore, for example, if the user does not place a finger on the finger rest portion 63 but directly touches the display surface 611, the operation detection unit 53 determines that the touch operation is on the invalid area A2 and does not detect the touch operation.

[0046] The process execution unit 54 executes a process according to the user's operation detected by the operation detection unit 53.

[0047] For example, when the tap operation on any one of the operation icons displayed on the operation screen is detected, the process executing unit 54 executes a process corresponding to the operated operation icon. Also, when the swipe operation on the operation screen is detected, the process executing unit 54 executes a process of changing the operation screen displayed on the display surface 611 to another operation screen having different operation icons and a different background image.

[0048] Here, the operation display unit 6 is provided with a pinch operation unit 67. As shown in FIG. 3, for example, the pinch operation unit 67 is arranged on the front side of the display surface 611 with a predetermined width in the left-right direction D3. The position detection unit 66 detects a touch operation on the pinch operation unit 67. For example, as shown in FIG. 8, when a user touches the pinch operation unit 67 with a finger Fa, the position detection unit 66 detects the touch operation of the finger Fa. Also, as shown in FIG. 9, when a user places and moves a finger Fb on the finger rest unit 63 while touching the pinch operation unit 67 with a finger Fa, the position detection unit 66 detects a position P1 where the movement of the finger rest unit 63 starts (the position of the finger rest unit 63 when the finger Fa touches the pinch operation unit 67) and a position P2 where the movement of the finger rest unit 63 ends.

[0049] In this case, the operation detection unit 53 detects a pinch out operation on the operation screen. When the pinch out operation on the operation screen is detected, the processing execution unit 54 executes processing to enlarge the image of the pinch area Pa defined by the position P1 and the position P2 among the images included in the operation screen displayed on the display surface 611.

[0050] When the user places one finger Fa on the pinch operation section 67 and then places another finger Fb on the finger rest section 63 and moves the finger rest section 63 in the opposite direction to the movement direction during the pinch out operation (see FIGS. 8 and 9), the operation detection section 53 detects a pinch in operation on the operation screen. When the pinch in operation on the operation screen is detected, the processing execution section 54 executes processing to reduce the image included in the operation screen displayed on the display surface 611.

[0051] In this way, in the image processing device 10, a pinch operation section 67 that is touched with the user's first finger is arranged near the display surface 611, and the display information of the pinch area Pa that is defined by the position P1 (first position) when the user touches the pinch operation section 67 with the first finger and the position P2 (second position) to which the user moves the finger rest section 63 with the second finger may be enlarged or reduced.

[0052] In another embodiment, the operation detection unit 53 may detect a user operation in the invalid area A2 excluding the detection area A1 set by the setting processing unit 52. In this case, the processing execution unit 54 may not execute processing in response to the user operation when the user operation detected by the operation detection unit 53 is performed in the invalid area A2. In other words, the processing execution unit 54 may invalidate the user operation on the display surface 611 when the user presses down on the finger rest section 63 in the invalid area A2 excluding the detection area A1.

[0053] [Operation detection process] 10, an example of the procedure of the operation detection process executed by the control unit 5 in the image processing device 10 will be described. Here, steps S1, S2, etc. represent the numbers of the processing procedures (steps) executed by the control unit 5. For example, the operation detection process is executed when the image processing device 10 is powered on or when the operation mode transitions from the sleep mode to the normal mode.

[0054] <Step S1> First, in step S1, the control unit 5 displays on the display surface 611 the operation screen used for user operations.

[0055] <Step S2> In step S2, the control unit 5 determines whether or not the position of the finger rest unit 63 has been acquired. For example, as shown in Fig. 5, the control unit 5 acquires the position of the finger rest unit 63 from the operation display unit 6, the position being specified based on the Y position (Y coordinate) of the first holding unit 64a in the front-rear direction D2 detected by the Y position detection unit 66y and the X position (X coordinate) of the second holding unit 64b in the left-right direction D3 detected by the X position detection unit 66x. If the control unit 5 acquires the position of the finger rest unit 63 (S2: Yes), the control unit 5 proceeds to step S3. On the other hand, if the control unit 5 has not acquired the position of the finger rest unit 63 (S2: No), the control unit 5 proceeds to step S8.

[0056] <Step S3> In step S3, the control unit 5 sets a detection area A1. For example, as shown in Fig. 5, when the control unit 5 acquires the position P0 (X position and Y position) of the finger rest unit 63, the control unit 5 sets a predetermined range centered on the position P0 as the detection area A1. The control unit 5 also sets the range of the display surface 611 excluding the detection area A1 as an invalid area A2. The control unit 5 updates the detection area A1 and the invalid area A2 in real time according to the position of the finger rest unit 63.

[0057] <Step S4> In step S4, the control unit 5 determines whether the capacitance on the display surface 611 has changed. Specifically, the control unit 5 determines whether the capacitance on the display surface 611 has changed based on the electrical signal output from the touch sensor 62. For example, as shown in FIG. 7, when the user presses the finger rest portion 63 from top to bottom with their finger, the space 63b is compressed and the finger approaches the conductive portion 63c. As a result, the control unit 5 detects a change in the capacitance between the finger and the touch sensor 62.

[0058] If the control unit 5 determines that the capacitance on the display surface 611 has changed (S4: Yes), the control unit 5 shifts the process to step S5. On the other hand, if the control unit 5 determines that the capacitance on the display surface 611 has not changed (S4: No), the control unit 5 shifts the process to step S8.

[0059] <Step S5> In step S5, the control unit 5 determines whether the change in capacitance detected in step S4 is in the detection area A1. If the control unit 5 determines that the change in capacitance is in the detection area A1 (S5: Yes), the control unit 5 proceeds to step S6. On the other hand, if the change in capacitance is not in the detection area A1 (S5: No), that is, if the control unit 5 determines that the change in capacitance is in the invalid area A2, the control unit 5 proceeds to step S8.

[0060] <Step S6> In step S6, the control unit 5 detects a user operation on the display surface 611 based on the change in capacitance detected in step S4. For example, the control unit 5 detects a touch operation (tap operation, swipe operation, etc.) based on the change in capacitance on the display surface 611. The control unit 5 also detects the position (X position and Y position) of the finger rest unit 63 when the change in capacitance is detected as the user's operation position.

[0061] <Step S7> In step S7, the control unit 5 executes a process corresponding to the user's operation (operation position) detected in step S6. For example, when the control unit 5 detects the tap operation on any one of the operation icons displayed on the operation screen that corresponds to the operation position, the control unit 5 executes a process corresponding to the operated operation icon.

[0062] On the other hand, if it is determined in step S5 that the change in capacitance is in the invalid area A2 (S5: No), the control unit 5 does not execute the process on the operation screen.

[0063] <Step S8> In step S8, the control unit 5 determines whether or not a user operation has been performed to terminate the display of the operation screen displayed on the display surface 611. For example, when the power supply to the image processing device 10 is cut off or when a user operation is performed on the operation display unit 6 to instruct a transition from the normal mode to the sleep mode, the control unit 5 determines that a user operation to terminate the display of the operation screen has been performed.

[0064] When the control unit 5 determines that a user operation to end the display of the operation screen has been performed (S8: Yes), it ends the operation detection process. On the other hand, when a user operation to end the display of the operation screen has not been performed (S8: No), the control unit 5 shifts the process to step S2 and waits for a movement of the finger rest unit 63 by the user or a change in capacitance on the display surface 611 until a user operation to end the display of the operation screen is performed.

[0065] In this way, the image processing device 10 includes a display unit 61 having a display surface 611, a finger rest unit 63 that is movable on the display surface 611 with the user's finger placed on it, a position detection unit 66 that detects the position of the finger rest unit 63, and an operation detection unit 53 that detects the user's operation on the display surface 611 based on the user's operation of pressing the finger rest unit 63.

[0066] According to the above configuration, the position where the user moves and presses the finger rest section 63 is detected as the user's touch operation, and the position where the user touches the display surface 611 other than the finger rest section 63 is not detected. This allows the user to, for example, fix their finger on an area other than the finger rest section 63 (invalid area A2) and move the finger rest section 63 to perform a touch operation at any position, thereby reducing the operational burden on the user and preventing erroneous operations.

[0067] The present invention is not limited to the above-described embodiment. For example, the operation display unit 6 may detect a user's operation using a resistive film method. For example, in the resistive film method, a gap is formed between the finger rest 63 and the touch sensor 62, and the position detection unit 66 detects a touch operation (operation position) when the user presses the finger rest 63 and the conductive portion 63c of the finger rest 63 comes into contact with the touch sensor 62.

[0068] [Disclosure Note] The following is a summary of the disclosure extracted from the above-described embodiment. Note that the configurations and processing functions described in the following supplementary notes can be selected and combined as desired.

[0069] <Appendix 1> a display unit having a display surface; a finger rest portion that is provided so as to be movable on the display surface with a user's finger placed thereon; a position detection unit that detects the position of the finger rest; an operation detection unit that detects an operation by the user on the display surface based on an operation of the user pressing the finger rest unit; A display input device comprising:

[0070] <Appendix 2> a setting processing unit that sets a range according to the position of the finger rest unit as a detection area; the operation detection unit detects an operation of the user on the display surface when the user presses the finger rest portion in the detection area. 2. The display and input device of claim 1.

[0071] <Appendix 3> When the user presses the finger rest in an area other than the detection area, the user's operation on the display surface is invalidated. 3. A display and input device as described in Appendix 2.

[0072] <Appendix 4> the finger rest is held by a first holding part that is movable in a first direction on the display surface and a second holding part that is movable in a second direction on the display surface, and is movable on the display surface in response to a movement operation by the user, the position detection unit detects the position of the finger rest unit based on the positions of the first holding unit and the second holding unit. 4. A display input device according to any one of Supplementary notes 1 to 3.

[0073] <Appendix 5> the finger rest includes a rest portion on which the user places his / her finger, a space provided below the rest portion within the finger rest, and a conductive portion provided below the space within the finger rest, the operation detection unit detects the operation of the user based on a change in capacitance between the display surface and the finger when the user presses the finger. 5. A display input device according to any one of Supplementary notes 1 to 4.

[0074] <Appendix 6> The conductive portion is formed of conductive rubber. 6. The display and input device of claim 5.

[0075] <Appendix 7> the operation detection unit does not detect an operation by the user on the display surface when the user performs an operation of touching the display surface in an area excluding the detection area; 3. A display and input device as described in Appendix 2.

[0076] <Appendix 8> A gap is formed between the finger rest and the touch sensor. A display input device according to any one of appendices 1 to 7.

[0077] <Appendix 9> a pinch operation unit that is touched by the user's other finger is disposed near the display surface; enlarging or reducing the display information in an area defined by a first position when the user touches the pinch operation unit with another finger and a second position to which the user moves the finger rest unit with the other finger; A display input device according to any one of Supplementary notes 1 to 8.

[0078] <Appendix 10> An information processing device comprising the display input device according to any one of Supplementary Notes 1 to 9. [Explanation of symbols]

[0079] 10: Image processing device 1: ADF (automatic document feeder) 2: Image reading unit 3: Image forming unit 4:Paper feed section 5: Control section 6:Operation display section 6A: Frame 7: Storage section 51: Display processing unit 52: Setting processing section 53: Operation detection unit 54: Processing execution unit 61:Display section 62: Touch sensor 63: Finger rest 63a: Placement section 63b: Space 63c: Conductive part 64: Holding part 64a: 1st holding part 64b: Second holding part 65: Frame 66: Position detection unit 66x: X position detection unit 66y: Y position detection section 67: Pinch operation section 611:Display surface A1: Detection area A2: Invalid area Pa: Pinch region

Claims

1. a display unit having a display surface; a finger rest portion that is provided so as to be movable on the display surface with a user's finger placed thereon; a position detection unit that detects the position of the finger rest; an operation detection unit that detects an operation by the user on the display surface based on an operation of the user pressing the finger rest unit; A display input device comprising:

2. a setting processing unit that sets a range according to the position of the finger rest unit as a detection area; the operation detection unit detects an operation of the user on the display surface when the user presses the finger rest portion in the detection area. The display input device according to claim 1 .

3. When the user presses the finger rest in an area other than the detection area, the user's operation on the display surface is invalidated. The display input device according to claim 2 .

4. the finger rest is held by a first holding portion that is movable in a first direction on the display surface and a second holding portion that is movable in a second direction on the display surface, and is movable on the display surface in response to a movement operation by the user, the position detection unit detects the position of the finger rest unit based on the positions of the first holding unit and the second holding unit. The display input device according to claim 1 .

5. the finger rest includes a rest portion on which the user places his / her finger, a space provided below the rest portion within the finger rest, and a conductive portion provided below the space within the finger rest, the operation detection unit detects the operation of the user based on a change in capacitance between the display surface and the finger when the user presses the finger. The display input device according to claim 1 .

6. The conductive portion is formed of conductive rubber. The display input device according to claim 5 .

7. the operation detection unit does not detect the user's operation on the display surface when the user performs an operation of touching the display surface in an area excluding the detection area; The display input device according to claim 2 .

8. A gap is formed between the finger rest and the touch sensor. The display input device according to claim 1 .

9. a pinch operation unit that is touched by the user's other finger is disposed near the display surface; enlarging or reducing the display information in an area defined by a first position when the user touches the pinch operation unit with another finger and a second position to which the user moves the finger rest unit with the other finger; The display input device according to claim 1 .

10. An information processing device comprising the display input device according to any one of claims 1 to 9.

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