JP2016045611A - Display input device and electronic apparatus equipped with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display input device which prevents erroneous detection by a touch panel and allows continuation of proper operation even when a foreign matter is caught near a touch panel and causes an abnormal state to occur in which the touch panel is continuously pressed, and to provide an electronic apparatus comprising the same.SOLUTION: A display input device 40 comprises a display part 50 for displaying images and a touch panel 60 which is provided facing the display part 50 and detects a coordinate position touched by a user. It comprises switching means 92 which, when after an abnormal state is detected in which one coordinate position in the touch panel 60 has been continuously pressed, a coordinate position different from the coordinate position is detected for a fixed period of time, switches to a correction mode in which either selection buttons in the touch panel 60 are displayed larger than when it is in a normal mode or intervals between the selection buttons are made larger than when it is in the normal mode, and coordinate correction means 93 for correcting detected coordinates when the switching means 92 switches to the correction mode.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a display input device and an electronic apparatus including the same.

  For example, the user inputs various settings to a display input device (for example, an operation panel) of the image forming apparatus so that the job is executed with desired settings. The display input device may be provided with a touch panel. A display input device including a touch panel displays a setting screen, recognizes coordinates pressed by a user's touch using the touch panel, and accepts input.

  Here, the same coordinates on the touch panel have always been pressed from the time the power is turned on because of foreign matter (for example, staples or clips removed from the document) between the touch panel and the case. An abnormal condition may occur.

  Therefore, in the technique of Patent Document 1, a region where the contact operation is invalidated is provided on the outer peripheral portion of the touch panel so as not to be erroneously operated due to the biting of a foreign object.

JP 2010-277119 A

  In the technique of Patent Document 1, the same operation button and detection area as in normal times are used even when there is an abnormality in which a foreign object is caught. However, when the input coordinates are corrected, the resolution is halved, so the input coordinates are corrected. However, the problem of erroneous operation cannot be solved.

  The present invention provides a display input device and an electronic apparatus equipped with the display input device, which can continue the correct operation without erroneous detection of the touch panel even when a foreign object is caught in the periphery of the touch panel and the touch panel is constantly pressed. The purpose is to do.

  The present invention is a display input device that includes a display unit that displays an image and a touch panel that is provided for the display unit and detects coordinates touched by a user. After detecting an abnormal state that is always pressed, if the coordinates other than the above coordinates are detected for a certain period of time, the display of the selection button on the touch panel is displayed larger than the normal mode, or the display interval of the selection buttons is increased. The present invention relates to a display input device comprising: a switching unit that switches to a correction mode that is wider than a normal mode; and a coordinate correction unit that corrects detected coordinates along with switching of the correction mode by the switching unit.

  The present invention also relates to an electronic device comprising the display input device.

  According to the present invention, even when a foreign object is caught in the vicinity of the touch panel and the touch panel is constantly pressed, there is no false detection of the touch panel due to a decrease in resolution, and the operation can be continued correctly.

1 is a diagram for explaining an overall configuration of a printer according to an embodiment of the present invention. FIG. 2 is a block diagram illustrating a functional configuration of a printer. It is a figure which shows the display screen of normal mode. It is a figure which shows the display screen of correction | amendment mode. It is a figure which shows the display screen of another correction mode. It is a figure which shows the coordinate information of a display screen. It is a figure which shows the example of a correction | amendment of a coordinate. It is another figure which shows the example of a correction | amendment of a coordinate. It is a flowchart which shows an example of the flow of the coordinate correction | amendment on the display screen which concerns on one Embodiment of this invention.

Hereinafter, an embodiment of a printer including a display input device according to the present invention will be described with reference to the drawings. First, the overall configuration of the printer 1 will be described.
FIG. 1 is a diagram for explaining the overall configuration of the printer 1 according to the present embodiment.

The printer 1 includes a paper transport unit 10, an image forming unit 20, and a fixing unit 30.
The paper transport unit 10 includes a first feed roller 11, a second feed roller 12, a registration roller pair 13, a first roller pair 14, a second roller pair 15, and a paper discharge unit 16. In addition, the conveyance path L through which the paper T is conveyed includes a first conveyance path L1 from the first feeding roller 11 or the second feeding roller 12 to the image forming unit 20 (a transfer nip N described later), and the image forming unit 20 ( A second conveying path L2 from a transfer nip N), which will be described later, to the fixing unit 30, a third conveying path L3 from the fixing unit 30 to the paper discharge unit 16, and the paper T discharged from the fixing unit 30 are transferred to the registration roller pair 13. And a fourth transport path L4.

  The first feed roller 11 supplies the paper T (transfer material) stored in the paper feed cassette 17 to the first transport path L1. The second feed roller 12 supplies the paper T (transfer material) placed on the manual feed tray 18 to the first transport path L1. The registration roller pair 13 is formed on the photosensitive drum 21 by supplying the paper T that has been conveyed through the first conveyance path L <b> 1 to the transfer nip N formed between the photosensitive drum 21 and the transfer roller 28. In order to transfer the toner image onto the paper T, the transport of the paper T or the transport of the paper T is stopped.

  Further, the registration roller pair 13 performs skew (oblique feeding) correction of the paper T. The first roller pair 14 is provided in the third transport path L3 and transports the paper T discharged from the fixing unit 30 to the paper discharge unit 16 side. The second roller pair 15 carries the paper T transported to the paper discharge unit 16 side by the first roller pair 14 into the fourth transport path L4. The paper discharge unit 16 discharges the paper T on which the toner image is fixed to the outside of the printer 1. A paper discharge stacking unit 19 is formed outside the printer 1 in the paper discharge unit 16. In the paper discharge stacking unit 19, the paper T discharged from the paper discharge unit 16 is stacked and stacked.

  The image forming unit 20 is for forming a toner image, and includes a photosensitive drum 21, a charging unit 22, a laser scanner unit 23, a developing device 24, a static eliminator 25, a cleaning unit 26, and a toner. A cartridge 27 and a transfer roller 28 are provided.

  The photoconductor drum 21 functions as a photoconductor or an image carrier in order to form a toner image. Around the photosensitive drum 21, a charging unit 22, a laser scanner unit 23, a developing device 24, and a cleaning unit 26 are arranged in order from the upstream side to the downstream side along the rotation direction of the photosensitive drum 21. The The charging unit 22 charges the surface of the photosensitive drum 21. The laser scanner unit 23 is arranged away from the surface of the photosensitive drum 21 and scans and exposes the surface of the photosensitive drum 21 based on image data transmitted by an external device (for example, a personal computer) arranged outside. To do. As a result, the exposed portion of the charge is removed from the surface of the photosensitive drum 21 to form an electrostatic latent image.

  The developing device 24 forms a toner image by attaching toner to the electrostatic latent image formed on the surface of the photosensitive drum 21. The static eliminator 25 irradiates the surface of the photoconductor drum 21 with light, thereby neutralizing the surface of the photoconductor drum 21 after the transfer is performed (removing the charge). The cleaning unit 26 removes toner or the like remaining on the surface of the photosensitive drum 21 after the surface of the photosensitive drum 21 is neutralized by the static eliminator 25.

  The toner cartridge 27 stores toner supplied to the developing device 24. The toner cartridge 27 and the developing device 24 are connected by a toner supply path (not shown). The transfer roller 28 transfers the toner image formed on the surface of the photosensitive drum 21 onto the paper T by sandwiching the paper T with the photosensitive drum 21.

  The fixing unit 30 includes a heating rotator 31 and a pressure rotator 32. The heating rotator 31 and the pressure rotator 32 sandwich the paper T on which the toner image is transferred, melt and pressurize the toner, and fix the toner to the paper T.

  Next, a functional configuration of the printer 1 will be described. FIG. 2 is a block diagram illustrating a functional configuration of the printer 1.

  As shown in FIG. 2, the printer 1 includes the above-described components (the paper transport unit 10, the image forming unit 20, and the fixing unit 30). The printer 1 includes an operation panel unit 40, a communication unit 70, a storage unit 80, and a control unit 90 in addition to the above-described components. Note that the description of the components described with reference to FIG. 1 is omitted.

  The operation panel unit 40 (corresponding to a display input device) includes a display unit 50 and a touch panel 60.

  The display unit 50 is configured by a liquid crystal display panel having a display screen 100 (described later). As shown in FIG. 3, the display screen 100 includes a plurality of selection buttons 101 for operating the printer 1 (for example, a print start button, an enlargement / reduction setting button, an image quality setting button, a paper selection button, a duplex / division setting button). , Staple setting button, sort setting button, etc.) are displayed. In FIG. 3, various selection buttons 101 are indicated by A, B, C, D, E, and F for convenience. FIG. 3 shows the display screen 100 in the normal mode.

  The touch panel 60 is a transparent input device operated by a user (pressed or touched by a finger). The touch panel 60 is disposed on the display unit 50 (on the user side). When the user operates the selection button 101 via the touch panel 60 in a state where a print start button is displayed on the display screen 100 (see FIG. 3) of the display unit 50, the position of the operated selection button 101 is the coordinates of the touch panel 60. It is detected as information (described later) and transmitted to the control unit 90.

The communication unit 70 is connected to an external device (for example, a personal computer) installed outside the printer 1.
The storage unit 80 includes a hard disk, a semiconductor memory, and the like. The storage unit 80 stores image data supplied from the external device described above. The storage unit 80 stores a control program used in the printer 1 and data used by the control program.

  The control unit 90 controls the paper transport unit 10, the image forming unit 20, the fixing unit 30, the display unit 50, and the like.

  Here, an example of a function (operation) of the control unit 90 will be described by showing a case where a toner image is formed only on one side of the paper T. First, the control unit 90 temporarily stores in the storage unit 80 the image data input from the external device via the communication unit 70. The control unit 90 controls the paper transport unit 10, the image forming unit 20, and the fixing unit 30 in order to form a toner image on the paper T based on the image data temporarily stored in the storage unit 80. That is, the control unit 90 drives the first feed roller 11 or the second feed roller 12 to transport the paper T to the image forming unit 20.

  Further, the control unit 90 supplies data for forming a toner image generated based on the image data to the laser scanner unit 23, and electrostatically applies to the photosensitive drum 21 by the laser light emitted from the laser scanner unit 23. A latent image is formed. The controller 90 forms a toner image on the photosensitive drum 21 from the developing device 24 and transfers the toner image onto the paper T by the transfer roller 28. The control unit 90 controls the heating rotator 31 to be heated to a predetermined temperature so that the toner of the toner image transferred onto the paper T by the heating rotator 31 is melted and pressed against the heating rotator 31. The toner is fixed on the paper T by the pressure rotator 32. Further, the control unit 90 causes the paper transport unit 10 to discharge the paper T on which the toner image is fixed from the paper discharge unit 16.

  The control unit 90 includes a display control unit 91, a correction mode switching unit 92, and a coordinate correction unit 93.

  The correction mode switching unit 92 switches to the correction mode when detecting an abnormal state where the same coordinates on the display screen 100 are constantly pressed through the touch panel 60 and then detecting coordinates other than the coordinates for a predetermined time or longer ( (See FIGS. 4 and 5). FIG. 4 shows a correction mode in which the selection button 101a is displayed larger than the selection button 101 (see FIG. 3) on the display screen 100 in the normal mode. If the selection button 101 does not fit on one screen (see FIG. 4A), it is displayed on the second screen as shown in FIG. 4B. FIG. 5 shows another correction mode in which the display interval of the selection button 101 on the display screen 100 is wider than that in the normal mode (see FIG. 3).

  The coordinate correction unit 93 corrects the detected coordinates together with the correction mode switching by the correction mode switching unit 92.

  The display control unit 91 controls correction mode switching by the correction mode switching unit 92 and correction of detected coordinates by the coordinate correction unit 93. For example, the display control unit 91 measures the time from when a coordinate is pressed until the next coordinate is pressed.

Here, coordinate information detected by the touch panel 60 will be described. As shown in FIG. 6, when the user operates a button on the display screen 100 through the touch panel 60, coordinate information (X, Y) corresponding to the position of the operated button is detected. In a four-wire resistive touch panel, when two points are pressed, the midpoint is detected, and the input coordinates are corrected by the following formula. If the coordinates detected when a foreign object is caught are (X1, Y1), the current detected coordinates are (X2, Y2), and the corrected coordinates are (X, Y), correction is performed according to the following equation.
When X1> X2, X = X1- (X1-X2) × 2
When X1 ≦ X2, X = X1 + (X2−X1) × 2
When Y1> Y2 Y = Y1- (Y1-Y2) × 2
When Y1 ≦ Y2, Y = Y1 + (Y2−Y1) × 2

Hereinafter, specific examples of correcting the coordinates of the display screen 100 through the touch panel are shown in FIGS.
1. When X1> X2 and Y1> Y2 (see FIG. 7A)
When (X1, Y1) = (255, 200), (X2, Y2) = (200, 120) (X, Y) = (145, 40)

2. X1 ≦ X2, Y1> Y2 (see FIG. 7B)
When (X1, Y1) = (0, 200), (X2, Y2) = (100, 120) (X, Y) = (200, 40)

3. X1> X2, Y1 ≦ Y2 (see FIG. 8A)
When (X1, Y1) = (255, 20), (X2, Y2) = (200, 100) (X, Y) = (145, 180)

4). X1 ≦ X2, Y1 ≦ Y2 (see FIG. 8B)
When (X1, Y1) = (0, 20), (X2, Y2) = (100, 100) (X, Y) = (200, 180)

  Next, a flow of coordinate correction on the display screen 100 of the present embodiment will be described based on FIG. FIG. 9 is a flowchart illustrating an example of the flow of coordinate correction on the display screen 100.

  First, when the power supply of the printer 1 is activated (step S1), it is confirmed whether the touch panel is pressed (step S2). If the touch panel is not pressed, the process proceeds to step S3, where it is determined that the touch panel is normal, and the normal mode (see FIG. 3) is set.

  If the touch panel has been pressed, the process proceeds to step S4, and it is confirmed whether or not the same coordinates on the touch panel have been pressed for a predetermined time. For example, the display control unit 91 measures the time from when a coordinate is pressed until the next coordinate is pressed. Even if the same coordinates on the touch panel are pressed, the flow returns to step S2 if it is shorter than the predetermined time.

  If the same coordinates on the touch panel are kept pressed for a certain period of time, it is determined that a foreign object is caught at the coordinates, and the user is notified of the abnormal state of the touch panel. If it is detected that a foreign object is pinched and a coordinate other than the coordinates where the foreign object is pinched is detected, it is determined that the user has operated the touch panel, and the process proceeds to step S5 where the display screen display is corrected to the touch panel coordinates. Switch to mode. For example, as shown in FIG. 4, the display of the selection button 101a on the touch panel is made larger than the normal mode (see FIG. 3), or the display interval of the selection button 101 is set to the normal mode (see FIG. 5). (See FIG. 3).

Then, it progresses to step S6 and correction | amendment of the detection (input) coordinate of a touch panel is started. In a four-wire resistive touch panel, when two points are pressed, the midpoint is detected, and the input coordinates are corrected by the following formula. If the coordinates detected when a foreign object is caught are (X1, Y1), the current detected coordinates are (X2, Y2), and the corrected coordinates are (X, Y), correction is performed according to the following equation.
When X1> X2, X = X1- (X1-X2) × 2
When X1 ≦ X2, X = X1 + (X2−X1) × 2
When Y1> Y2 Y = Y1- (Y1-Y2) × 2
When Y1 ≦ Y2, Y = Y1 + (Y2−Y1) × 2

  When the input coordinates are corrected, the coordinates are doubled in the X and Y directions, and the resolution of the touch panel is deteriorated. In the present embodiment, in order to prevent erroneous detection due to a decrease in resolution, as shown in FIG. 4, the display of the selection button 101a on the touch panel is made larger than the normal mode (see FIG. 3) or shown in FIG. In this way, the display mode of the selection button 101 is switched to the correction mode in which the display interval is wider than the normal mode (see FIG. 3). For this reason, even when a foreign object is caught around the touch panel and the touch panel is constantly pressed, there is no false detection of the touch panel due to a decrease in resolution, and the operation can be continued correctly.

  Although the embodiment of the present invention has been described, the scope of the present invention is not limited to this, and various modifications can be made without departing from the spirit of the invention.

  The present invention can be used for a display input device or an electronic apparatus including the display input device, such as an image forming apparatus, a mobile phone, a smartphone, or a tablet.

1 Printer 40 Operation panel (display input device)
50 Display Unit 60 Touch Panel 92 Correction Mode Switching Unit 93 Coordinate Correction Unit 100 Display Screen 101 Selection Button

Claims (4)

A display for displaying an image;
A display input device provided for the display unit and provided with a touch panel for detecting coordinates touched by a user,
After detecting an abnormal state where the same coordinates on the touch panel are always pressed, if the coordinates other than the above coordinates are detected for a certain period of time, the display of the selection button on the touch panel is displayed larger than the normal mode or selected. Switching means for switching to a correction mode in which the display interval of the button is expanded from the normal mode;
Along with switching of the correction mode by the switching means, coordinate correction means for correcting the detected coordinates,
A display input device comprising: The display input device according to claim 1,
The coordinate correction means performs correction according to the following equation, where (X1, Y1) is an abnormal coordinate, (X2, Y2) is a current detected coordinate, and (X, Y) is a corrected coordinate. Display input device.
When X1> X2, X = X1- (X1-X2) × 2
When X1 ≦ X2, X = X1 + (X2−X1) × 2
When Y1> Y2 Y = Y1- (Y1-Y2) × 2
When Y1 ≦ Y2, Y = Y1 + (Y2−Y1) × 2 The display input device according to claim 1 or 2,
A display input device that informs a user of an abnormal state of a touch panel when the abnormal coordinates are detected.   An electronic apparatus comprising the display input device according to claim 1.

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