JP2013019932A - Image processing device, display control method, and display control program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To notify a user whether a display surface is needed to be cleaned, while displaying an image.SOLUTION: An MFP includes: an LCD for displaying an image; a touch panel provided on the LCD to detect a position specified in the display surface; an instruction detection part 51 for detecting an instruction operation when the position detected by the touch panel satisfies a first detection condition; a use counting part 53 for counting the number of uses; a wipe-off operation detection part 59 for detecting wipe-off operation when the position detected by the touch panel satisfies a second detection condition; a wipe-off operation counting part 61 for counting the number of wipe-off operations; and a mode switching part 55 for setting the LCD to a normal display mode or a cleaning mode different in image display condition from the normal display mode, on the basis of the number of instructions and the number of wipe-off operations.

Description

  The present invention relates to an image processing apparatus, a display control method, and a display control program, and more particularly to an image processing apparatus using a soft keyboard, a display control method and a display control program executed by the image processing apparatus.

  In recent years, in an image forming apparatus represented by a multifunction peripheral (MFP), a soft keyboard in which a display and a touch panel are combined is used as a user interface. The user can input an operation by pointing a button displayed on the screen, which is convenient. On the other hand, since the display surface is touched with a finger, dirt may adhere to the touch panel, and the touch panel needs to be cleaned. In Japanese Patent Application Laid-Open No. 2010-32679, an electronic device includes an LCD, a touch panel, an input detection unit that detects an operation of the touch panel and various hard switches, and a display control unit that controls display on the LCD. When the display control unit receives an instruction to start the screen cleaning mode via the input detection unit, an electronic device is described in which a plurality of images having different colors are sequentially switched and displayed on the LCD.

However, in the conventional electronic device, in order to switch to the cleaning mode, the user must input an instruction to switch to the cleaning mode. In addition, when a user who gives an instruction to switch to the cleaning mode leaves the place, other users cannot always recognize the cleaning mode from the LCD display, and a white image is displayed. If it is displayed, it may be mistaken for a failure, or if a black image is displayed, it may be mistaken for a sleep mode.
JP 2010-32679 A

  The present invention has been made to solve the above-described problems, and one of the objects of the present invention is to notify a user whether or not the display surface needs to be cleaned in a state where an image is displayed. An image processing apparatus is provided.

  Another object of the present invention is to provide a display control method capable of notifying the user whether or not the display surface needs to be cleaned while displaying an image.

  Another object of the present invention is to provide a display control program capable of notifying a user whether or not the display surface needs to be cleaned in a state where an image is displayed.

  In order to achieve the above-described object, according to one aspect of the present invention, an image processing apparatus includes a display unit that displays an image, a position that is provided on the display unit, and is superposed on the display unit. And when the position detected by the detection means satisfies the first detection condition, the instruction detection means for detecting the instruction operation and the instruction operation detected by the instruction detection means, A use count counting unit that counts the number of times the detection unit is used, a wiping operation detection unit that detects a wiping operation when the position detected by the detection unit satisfies the second detection condition, and a wiping operation detection unit In response to the detection of the wiping operation, the number of wiping operation counting means for counting the number of wiping operations for wiping the display surface of the display means, and the counted finger Based on the number of times and the counted number of wiping operations, the mode switching means for setting the display mode of the display means to one of the normal mode and the cleaning mode in which the display mode of the image displayed on the display means is different from the normal mode; Is provided.

  According to this aspect, when the indicated position is detected on the display surface, the instruction operation is detected and the instruction operation is detected when the detected position satisfies the first detection condition. When the number of times used is counted and the indicated position is detected, the wiping operation is detected and the wiping operation is detected when the detected position satisfies the second detection condition. Accordingly, the number of wiping operations is counted, and based on the number of instructions and the number of wiping operations, the display mode is set to either the normal mode or the cleaning mode in which the image display mode is different from the normal mode. The Since the display mode is set based on the number of instructions and the number of wiping operations, the cleaning time can be notified to the user. Moreover, since the display mode of an image differs in normal mode and cleaning mode, a display mode can be notified to a user from the difference in a display mode. As a result, it is possible to provide an image processing apparatus capable of notifying the user whether or not the display surface needs to be cleaned while displaying an image.

  Preferably, the instruction detection unit detects an instruction operation and counts the number of times of use when one or more positions continuously detected by the detection unit are within one divided area of the plurality of divided areas obtained by dividing the display surface. The means counts the number of instructions for each of the plurality of divided areas in response to detection of the instruction by the instruction detection means, and the mode switching means determines that the number of instructions counted for each of the plurality of divided areas is the first switching condition. When the condition is satisfied, the display mode is switched from the normal mode to the cleaning mode.

  Preferably, the wiping operation detection means detects the wiping operation when the plurality of positions detected continuously by the detection means are in two or more adjacent divided areas among the divided areas obtained by dividing the display surface. The wiping operation counting means counts the number of wiping operations for each of the plurality of divided areas in response to the wiping operation detected by the wiping operation detecting means, and the mode switching means is counted for each of the plurality of divided areas. When the number of wiping operations satisfies the second switching condition, the display mode is switched from the cleaning mode to the normal mode.

  Preferably, the apparatus further includes a history storage unit that stores a history including a position where the detected wiping operation is detected on the display surface of the display unit in response to the wiping operation being detected by the wiping operation detection unit.

  Preferably, while the display mode is set to the cleaning mode, the brightness of the operation screen displayed on the display unit is different from the brightness of the operation screen displayed on the display unit while the normal mode is set. Display control means is further provided.

  According to this aspect, the brightness of the displayed operation screen differs between the normal mode and the cleaning mode, so the display mode can be notified to the user from the difference in brightness.

  Preferably, the instruction detection unit detects an instruction operation and counts the number of times of use when one or more positions continuously detected by the detection unit are within one divided area of the plurality of divided areas obtained by dividing the display surface. The means counts the number of instructions for each of the plurality of divided areas in response to detection of the instruction by the instruction detection means, and the mode switching means determines that the number of instructions counted for each of the plurality of divided areas is the first switching condition. If the display mode is satisfied, the display mode is switched from the normal mode to the cleaning mode, and the display control means includes a brightness determination means for partially determining the brightness of the operation screen based on the number of instructions counted for each of the plurality of divided areas. Including.

  According to this aspect, since the brightness varies depending on the number of instructions in each of the plurality of divided areas obtained by dividing the display surface, the number of instructions can be notified to the user for each of the plurality of divided areas.

  Preferably, the wiping operation detection means detects the wiping operation when the plurality of positions detected continuously by the detection means are in two or more adjacent divided areas among the divided areas obtained by dividing the display surface. The wiping operation counting means counts the number of wiping operations for each of the plurality of divided areas in response to the wiping operation detected by the wiping operation detecting means, and the mode switching means is counted for each of the plurality of divided areas. When the number of wiping operations satisfies the second switching condition, the display mode is switched from the cleaning mode to the normal mode, and the display control means performs a plurality of brightness determination means based on the number of wiping operations counted for each of the plurality of divided areas. Further, brightness change means for changing the brightness determined for each of the divided areas is further included.

  According to this aspect, since the brightness varies depending on the number of wiping operations in each of the plurality of divided areas obtained by dividing the display surface, the number of wiping operations can be notified to the user for each of the plurality of divided areas.

  Preferably, it further includes brightness detection means for detecting external brightness, and the brightness determination means includes correction means for correcting the brightness of the operation screen based on the detected external brightness.

  According to this aspect, it is possible to display an easy-to-see screen corresponding to environmental changes.

  Preferably, when the display mode is switched from the cleaning mode to the normal mode, reset means for resetting the number of instructions and the number of wiping operations counted for each of the plurality of divided areas is further provided.

  According to another aspect of the present invention, a display control method includes a display unit that displays an image, a detection unit that is provided so as to be superimposed on the display unit, and that detects a position indicated on the display surface of the display unit. A display control method executed by an image processing apparatus including: a step of detecting an instruction operation and a step of detecting an instruction operation when the position detected by the detection unit satisfies the first detection condition; A step of counting the number of times the detecting means has been used in response to detection of an instruction; a step of detecting a wiping operation when the position detected by the detecting means satisfies the second detection condition; In response to the detection of the wiping operation in the step of detecting the operation, the step of counting the number of wiping operations for wiping the display surface of the display means is counted. Based on the number of times indicated and the counted number of wiping operations, the step of setting the display mode of the display means to either the normal mode or the cleaning mode in which the display mode of the image displayed on the display means is different from the normal mode. Including.

  If this aspect is followed, the display control method which can notify a user whether the display surface needs to be cleaned in the state which displayed the image can be provided.

  According to still another aspect of the present invention, a display control program includes a display unit that displays an image, a detection unit that is provided so as to be superimposed on the display unit, and that detects a position indicated on the display surface of the display unit. A display control program that is executed by a computer that controls the image processing apparatus, the step of detecting an instruction operation when the position detected by the detection means satisfies the first detection condition, and the instruction operation And detecting the wiping operation when the position detected by the detection means satisfies the second detection condition in response to the detection of the instruction in the step of detecting And the number of wiping operations to wipe the display surface of the display means in response to detecting the wiping operation in the step of detecting the wiping operation Based on the counting step, the counted number of instructions and the counted number of wiping operations, the display mode of the display means is either the normal mode or the normal mode, which is different from the cleaning mode in which the display mode of the image displayed on the display means is different. And causing the computer to execute the step of setting up.

  If this aspect is followed, the display control program which can notify a user whether the display surface needs to be cleaned in the state which displayed the image can be provided.

1 is a perspective view showing an external appearance of an MFP in the present embodiment. 2 is a block diagram illustrating an outline of a hardware configuration of an MFP. FIG. It is a top view of an operation panel. FIG. 3 is a block diagram illustrating an example of functions of a CPU included in an MFP. It is a figure which shows an example of a level table. (A) is a figure which shows an example of the reduction level of each divided area divided | segmented into multiple, (B) is a figure which shows the wiping operation frequency | count of each divided area divided | segmented into multiple, (C) is multiple It is a figure which shows an example of the reduction level after the wiping operation of each division area divided | segmented into. It is a flowchart which shows an example of the flow of a display mode switching process. It is a flowchart which shows an example of the flow of a display mode change process.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same parts are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

  FIG. 1 is a perspective view showing the appearance of the MFP according to the present embodiment. FIG. 2 is a block diagram showing an outline of the hardware configuration of the MFP. 1 and 2, MFP 100 functioning as an image processing apparatus includes a main circuit 110, a document reading unit 130 for reading a document, and an automatic document transport device for transporting a document to document reading unit 130. 120, an image forming unit 140 for forming an image on a sheet or the like based on image data output by the document reading unit 130 reading the document, and a paper feeding unit 150 for supplying the image forming unit 140 with a sheet. And an operation panel 160 as a user interface.

  The main circuit 110 includes a CPU 111, a communication interface (I / F) unit 112, a ROM 113, a RAM 114, a hard disk drive (HDD) 115 as a mass storage device, a facsimile unit 116, an external storage device 117, including. CPU 111 is connected to automatic document feeder 120, document reading unit 130, image forming unit 140, sheet feeding unit 150, and operation panel 160, and controls the entire MFP 100.

  The automatic document feeder 120 automatically conveys a plurality of documents set on the document feeding tray one by one to a predetermined document reading position set on the platen glass of the document reading unit 130, and reads the document. The document whose document image is read by the unit 130 is discharged onto a document discharge tray. The document reading unit 130 includes a light source that irradiates light to the document conveyed to the document reading position and a photoelectric conversion element that receives light reflected from the document, and scans a document image corresponding to the size of the document. The photoelectric conversion element converts the received light into image data that is an electrical signal and outputs the image data to the image forming unit 140. The paper feed unit 150 conveys the paper stored in the paper feed tray to the image forming unit 140.

  The image forming unit 140 forms an image by a well-known electrophotographic method, and the image data after data processing is obtained by performing various data processing such as shading correction on the image data input from the document reading unit 130. Alternatively, an image is formed on a sheet conveyed by the sheet feeding unit 150 based on image data received from the outside.

  The facsimile unit 116 is connected to the public switched telephone network (PSTN) and transmits facsimile data to the PSTN or receives facsimile data from the PSTN. The facsimile unit 116 converts the received facsimile data into print data that can be printed by the image forming unit 140 and outputs the print data to the image forming unit 140. As a result, the image forming unit 140 forms an image on a sheet of facsimile data received by the facsimile unit 116. The facsimile unit 116 can also store the received facsimile data in the HDD 115. Further, the facsimile unit 116 converts the image data of the original image read by the original reading unit 130 or the data stored in the HDD 115 into facsimile data, and transmits the facsimile data to the facsimile apparatus connected to the PSTN.

  Communication I / F unit 112 is an interface for connecting MFP 100 to a network. The communication I / F unit 112 communicates with other computers or image forming apparatuses connected to the network using a communication protocol such as TCP (Transmission Control Protocol) or FTP (File Transfer Protocol). Note that the network to which the communication I / F unit 112 is connected may be wired or wireless. The network is not limited to a LAN, and may be a wide area network (WAN), a public switched telephone network (PSTN), the Internet, or the like.

  The ROM 113 stores a program executed by the CPU 111 or data necessary for executing the program. The RAM 114 is used as a work area when the CPU 111 executes a program. Further, the RAM 114 temporarily stores the read images continuously sent from the document reading unit 130.

  The operation panel 160 includes a liquid crystal display (LCD) 165, a display control unit 161 that controls display on the LCD 165, a VRAM (Video RAM) 163, a touch panel 169, a hard key unit 170, a touch panel 169, and a hard key unit. An input control unit 167 that controls 170, a brightness sensor 175, and an LED (Light Emitting Diode) 177 are included. LCD 165, hard key unit 170, brightness sensor 175, and LED 177 are provided on the upper surface of MFP 100.

  The display control unit 161 is connected to the CPU 111, the VRAM 163, and the LCD 165. The VRAM 163 is used as a work area for the display control unit 161 and temporarily stores an image to be displayed on the LCD 165. The display control unit 161 is controlled by the CPU 111 to control the LCD 165 and cause the LCD 165 to display an image stored in the VRAM 163.

  The hard key unit 170 includes a hard key including at least a start key. The hard key is connected to the input control unit 167 and outputs an ON signal to the input control unit 167 while being pressed by the user, and outputs an OFF signal to the input control unit 167 while not being pressed by the user.

  The touch panel 169 is provided on the upper surface or the lower surface of the LCD 165, and outputs the coordinates of the position pressed by the user to the input control unit 167. The touch panel 169 detects a position designated by the user with a finger or the like, and outputs the coordinates of the detected position to the input control unit 167. Touch panel 169 is preferably the same size or larger than the display surface of LCD 165. Since the touch panel 169 is provided so as to overlap with the LCD 165, the touch panel 169 outputs the coordinates of the position designated by the user on the display surface of the LCD 165 to the input control unit 167 when the user indicates the display surface of the LCD 165. As the touch panel, for example, a resistive film method, a surface acoustic wave method, an infrared method, an electromagnetic induction method, and a capacitance method can be used, and the method is not limited.

  When there is a hard key that outputs an ON signal in the hard key unit 170, the input control unit 167 outputs identification information of the hard key that outputs the ON signal to the CPU 111. Further, when the touch panel 169 detects the position designated by the user, the input control unit 167 outputs the coordinates output from the touch panel 169 to the CPU 111.

  The brightness sensor 175 is a photoelectric conversion element such as a CCD (Charge Coupled Devices), detects the amount of light incident from the outside, and outputs the detected light amount to the CPU 111. The LED 177 is controlled by the CPU 111 and is lit or blinked when the display mode is the cleaning mode, and is turned off when the display mode is the normal mode. Instead of the LED 177, a lamp such as a light bulb may be used.

  The external storage device 117 is controlled by the CPU 111, and a CD-ROM (Compact Disk Read Only Memory) 118 or a semiconductor memory is mounted.

  FIG. 3 is a plan view of the operation panel 160. Referring to FIG. 3, operation panel 160 includes an LCD 165, a touch panel 169 provided to overlap LCD 165, a brightness sensor 175 disposed at the upper right of LCD 165, and an LED 177 disposed at the upper left of LCD 165, A hard key unit 170 in which a plurality of hard keys are arranged on the right side and the lower side of the LCD 165. Hard key portion 170 includes a start key 171.

  FIG. 4 is a block diagram illustrating an example of functions of a CPU included in the MFP. The functions shown in FIG. 4 are functions realized by CPU 111 when CPU 111 provided in MFP 100 executes a program stored in ROM 113, HDD 115, or CD-ROM 118. Referring to FIG. 4, CPU 111 includes an instruction detection unit 51 that detects an instruction to the touch panel 169 by a user, a usage count unit 53 that counts the number of times the touch panel 169 is used, and a mode switching unit 55 that switches a display mode. A display mode control unit 57 that controls the display mode of an image displayed on the LCD 160, a wiping operation detection unit 59 that detects an operation of wiping the touch panel 169 by the user, and a wiping operation count unit that counts the number of wiping operations 61, a reset unit 63, a history storage unit 65 that stores a history of wiping operations in the HDD 115, and a brightness detection unit 67.

  The instruction detection unit 51 detects an instruction operation in which the user instructs the display surface of the touch panel 169 or the LCD 165 when the output of the touch panel 169 is input and the coordinates input from the touch panel 169 satisfy the first detection condition. When the user designates the display surface of touch panel 169 or LCD 165, touch panel 169 outputs the coordinates of the designated position on the display surface. The touch panel 169 outputs the coordinates of the designated position at predetermined time intervals. The time for the user to specify the display surface varies depending on the user. Touch panel 169 outputs the coordinates of the designated position while the display surface is designated. In other words, while the user designates the display surface, the touch panel 169 outputs a plurality of coordinates continuously, but when the user stops instructing the display surface, the touch panel 169 stops outputting the coordinates.

  The instruction detection unit 51 receives one or more coordinates that the touch panel 169 continuously outputs while the display surface is instructed. If the user indicates the same position, one or more coordinates that are continuously received are the same. In this embodiment, in order to detect an operation instructed by the user, any one of a plurality of coordinates included in one divided area of the divided areas obtained by dividing the display surface of LCD 165 is indicated. Is one instruction operation even when a plurality of coordinates are different. The size of the plurality of divided regions may be, for example, a size equal to or smaller than the smallest button among a plurality of types of buttons displayed on the LCD 165.

  The first detection condition is that one or more positions continuously detected by the touch panel 169 exist in one divided area of the plurality of divided areas obtained by dividing the display surface of the LCD 165. That is, if one or more coordinates continuously input from the touch panel 169 are included in one divided area among a plurality of divided areas obtained by dividing the display surface of the LCD 169, the instruction detecting unit 51 performs an instruction operation by the user. Judge. However, the instruction detection unit 51 does not determine that the instruction operation is performed by the user if one or more coordinates from the touch panel 169 are included in two or more different divided areas among the plurality of divided areas obtained by dividing the display surface of the LCD 169. . When detecting an instruction operation by the user, the instruction detection unit 51 uses any one of one or more coordinates continuously input from the touch panel 169 as information for specifying the instruction operation. Output to.

  The wiping operation detection unit 59 detects a wiping operation in which the user wipes the display surface of the touch panel 169 or the LCD 165 when the output of the touch panel 169 is input and the coordinates input from the touch panel 169 satisfy the first detection condition. The wiping operation detection unit 59 receives a plurality of coordinates that the touch panel 169 continuously outputs while the display surface is instructed. The second detection condition is that a plurality of positions continuously detected by the touch panel 169 are present in two or more divided areas of the plurality of divided areas obtained by dividing the display surface of the LCD 165. That is, the wiping operation detection unit 59 may wipe the user's wipe if a plurality of coordinates continuously input from the touch panel 169 are included in two or more divided areas of the divided areas obtained by dividing the display surface of the LCD 169. Judge as operation. However, the wiping operation detection unit 59 determines that the wiping operation is performed by the user if a plurality of coordinates continuously input from the touch panel 169 are included in one divided area among the plurality of divided areas obtained by dividing the display surface of the LCD 169. do not do. When detecting the wiping operation by the user, the wiping operation detection unit 59 uses a plurality of coordinate sets continuously input from the touch panel 169 as information for specifying the wiping operation, the wiping operation count unit 61 and the history storage unit. Output to 65.

  The use count unit 53 counts the number of uses for each of a plurality of divided areas obtained by dividing the display surface of the LCD 169 each time coordinates are input as information for specifying an instruction operation from the instruction detection unit 51. Specifically, the usage count unit 53 corresponds to each of a plurality of divided areas obtained by dividing the display surface of the LCD 169, and includes an instruction number counter for counting the number of usages, and the display surface of the LCD 169 is divided. The instruction operation counter corresponding to the divided area to which the coordinates input from the instruction detection unit 51 belong is incremented among the plurality of divided areas. The usage number counting unit 53 outputs the count value of the instruction operation number counter for each of the plurality of divided areas obtained by dividing the display surface of the LCD 169 to the mode switching unit 55 and the display mode control unit 57.

  The wiping operation count counter 61 receives a plurality of coordinates on which the wiping operation detected by the wiping operation detector 59 has been performed. The wiping operation frequency counting unit 61 counts the number of wiping operations for each of a plurality of divided areas obtained by dividing the display surface of the LCD 169 every time a plurality of coordinate sets are input from the wiping operation detection unit 59. Specifically, the wiping operation number counting unit 61 corresponds to each of a plurality of divided areas obtained by dividing the display surface of the LCD 169, and includes a wiping operation number counter for counting wiping operations. Among a plurality of divided areas, a plurality of divided areas to which each of a plurality of coordinate sets input from the wiping operation detection unit 59 belongs are specified, and a wiping operation number counter corresponding to each of the specified plurality of divided areas is incremented. . Here, the increment of the wiping operation counter for one divided area is “1” for a plurality of sets of coordinates. More specifically, even when there are a plurality of coordinates included in the same divided area among the plurality of coordinates, the increment of the wiping operation counter corresponding to the divided area is “1”. The wiping operation number counting unit 61 outputs the count value of the wiping operation number counter for each of a plurality of divided areas obtained by dividing the display surface of the LCD 169 to the mode switching unit 55 and the display mode control unit 57.

  The mode switching unit 55 receives the use count value for each of the plurality of divided areas from the use count counter 53 and receives the wiping operation count value for each of the plurality of divided areas from the wiping operation count counter 61. The mode switching unit 55 switches the display mode of the LCD 165 based on the use count value and the wiping operation count count value for each of the plurality of divided areas. The display mode includes a normal mode and a cleaning mode. The display mode of the image displayed on the LCD 165 is different between the normal mode and the display mode. Here, the image displayed on LCD 165 in the cleaning mode has lower brightness than the image displayed on LCD 165 in the normal mode.

  When the display mode is the normal mode, the mode switching unit 55 switches the display mode to the cleaning mode when the maximum use count value for each of the plurality of divided areas exceeds the threshold value T1.

  In addition, when the display mode is the cleaning mode, the mode switching unit 55 determines the threshold value T (i) in which the wiping operation count value of the divided area is determined based on the use count value in all the divided areas. At this point, the display mode is switched to the normal mode. When switching the display mode, the mode switching unit 55 outputs the display mode after switching to the display mode control unit 57. However, the threshold value T (i) indicates a threshold value in the i-th divided region among the plurality of divided regions, and a larger value is set as the use count value is larger. For example, if the use count value of the i-th divided area is 0, the threshold value T (i) is set to “0”, and if the use count count value of the i-th divided area is greater than 0 and less than 10. The threshold value T (i) is set to “2” if the threshold value T (i) is set to “1” and the use count value of the i-th divided region is greater than 10 and less than 20. The threshold value T (i) is set to “3” if the use count value of the divided area is greater than 20 and 30 or less, and the threshold is set if the use count value of the i-th divided area is greater than 30 and 40 or less. The value T (i) is set to “4”, and the threshold value T (i) is set to “5” if the use count value of the i-th divided area is larger than 40.

  Further, the mode switching unit 55 outputs a reset signal to the reset unit 63 when the display mode is switched from the cleaning mode to the normal mode.

  A threshold value T (i) corresponding to the use count value is determined for each of the plurality of divided areas, and the second switching condition in which the mode switching unit 55 switches the display mode from the cleaning mode to the normal mode is set in all the divided areas. The wiping operation count value of the divided area is equal to or greater than a threshold value T (i) determined based on the use count value. For this reason, since the number of wiping operations can be made different between the large divided area and the small divided area, the user can efficiently perform the wiping operation.

  Further, the second switching condition in which the mode switching unit 55 switches the display mode from the cleaning mode to the normal mode is divided, and the usage count value for each of the plurality of divided areas counted by the usage count unit 53 is divided by the wiping operation count value. The value obtained may be used as the cleaning count value, and the maximum cleaning count value may be equal to or less than the threshold value T2.

  The mode switching unit 55 turns on or blinks the LED 177 while the display mode is switched to the cleaning mode, and turns off the LED 177 while the display mode is the normal mode. Thereby, the display mode can be notified to the user based on the difference in the light emission state of the LED 177.

  When the reset signal is input from the mode switching unit 55, the reset unit 63 resets the use count value for each of the plurality of divided areas counted by the use count unit 53 to “0” and the wiping operation count counter The wiping operation count value for each of the plurality of divided areas counted by 61 is reset to “0”. Further, when a reset signal is input from the mode switching unit 55, the reset unit 63 outputs an erasure instruction to the history storage unit 65.

  The history storage unit 65 stores, in the HDD 115, history information in which a plurality of coordinate sets input from the wiping operation detection unit 59 are associated with time. Further, when an erasure instruction is input from the reset unit 63, the history storage unit 65 erases the history information stored in the HDD 115 from the HDD 115.

  The brightness detection unit 67 is connected to the brightness sensor 175, and outputs the light amount output from the brightness sensor 175 to the display mode control unit 57.

  The display mode control unit 57 receives the display mode from the mode switching unit 55, receives the use count value for each of the plurality of divided areas from the use count counting unit 53, and the wiping operation count counter 61 for each of the plurality of divided areas. The count value of the number of wiping operations is input. The display mode control unit 57 controls the display mode of the image displayed on the LCD 165. Here, the display mode control unit 57 controls the brightness of the image as the display mode of the image. When the normal mode is input as the display mode from the mode switching unit 55, the display mode control unit 57 does not change the brightness of the image displayed on the LCD 165. Specifically, the image is displayed with a predetermined brightness. When the cleaning mode is input as the display mode from the mode switching unit 55, the display mode control unit 57 lowers the brightness of the image displayed on the LCD 165 as compared with the normal mode.

  The display mode control unit 57 includes a lightness determination unit 71 and a lightness change unit 73. When the display mode is the cleaning mode, the lightness determination unit 71 determines the lightness reduction rate for each of the plurality of divided regions based on the use frequency count value for each of the plurality of divided regions input from the use number counting unit 53. To do. The larger the use count value, the greater the lightness reduction rate. Here, a case will be described as an example where the lightness determination unit 71 uses a level table in which a plurality of reduction levels are set according to the use count value and the ratio of reducing the lightness according to the reduction level is determined.

  FIG. 5 is a diagram illustrating an example of the level table. Referring to FIG. 5, the level table associates the use count value with a reduction level and a reduction rate. Specifically, if the use count value N1 is 0, the reduction level is classified into the 0th level, and the reduction rate of the 0th level is set to 0%. If the use count value N1 is greater than 0 and less than or equal to 10, the reduction level is classified as the first level, and the reduction rate of the first level is set to 10%. If the use count value N1 is greater than 10 and less than or equal to 20, the reduction level is classified as the second level, and the reduction rate of the second level is set to 20%. If the use count value N1 is greater than 20 and 30 or less, the reduction level is classified into the third level, and the reduction rate of the third level is set to 30%. If the usage count value N1 is greater than 30 and less than or equal to 40, the reduction level is classified into the fourth level, and the reduction rate of the fourth level is set to 40%. If the use count value N1 is larger than 40, the reduction level is classified into the fifth level, and the reduction rate of the fifth level is set to 50%.

  The reduction level is determined by the use count value N1 for each of the plurality of divided regions, similarly to the threshold value T (i) described above. For this reason, the reduction level preferably corresponds to the threshold value T (i). Here, the threshold value T (i) corresponds to 0 for the reduction level 0, the threshold value T (i) corresponds to 1 for the reduction level 1, and the threshold value T (i) corresponds to 2 for the reduction level 2. The threshold level T (i) corresponds to 3 for the reduction level 3, the threshold value T (i) corresponds to 4 for the reduction level 4, and the threshold value T (i) corresponds to 5 for the reduction level 5. .

  Returning to FIG. 4, the lightness determination unit 71 determines a reduction level associated with the use count value by the level table for each of the plurality of divided regions. The brightness determination unit 71 outputs, to the display control unit 161, the reduction rate associated with the determined reduction level by the level table for each of the plurality of divided regions, and displays it on the display control unit 161 until then. An image in which the brightness is lowered by the reduction rate determined for each of the plurality of divided areas is displayed. For example, if the reduction rate of a certain divided area is 10%, an image with a lightness of 90% is displayed as the image of that divided area.

  Since the lightness determination unit 71 assigns a reduction level to each of the plurality of divided regions based on the use count value, the reduction rate may be different for each of the plurality of divided regions. The greater the number of times the user points the touch panel 169 with the finger, the higher the possibility that the user is soiled. Further, since the content (shape, hue, and saturation) of the image displayed on the LCD 165 does not change, only the brightness changes, so that the user can be notified of the failure mode. In particular, an image is not displayed on the LCD 165 in the sleep mode, and an image may not be displayed on the LCD 165 at the time of failure, or a white image or an image different from the operation screen may be displayed. Since the image with the reduced brightness of the operation screen image displayed is displayed, an image different from the image displayed on the LCD 165 in the sleep mode or failure can be displayed. For this reason, it can notify a user that it is cleaning mode.

  Further, the lightness determination unit 71 receives the light amount from the brightness detection unit 67. The lightness determination unit 71 determines a lightness correction amount based on the amount of light input from the brightness detection unit 67. For example, a correction table in which the light amount and the correction amount are associated is prepared in advance, and the correction amount associated with the light amount input from the brightness detection unit 67 is determined. The correction table is associated with a correction amount that increases the lightness as the amount of light increases. The brightness determination unit 71 outputs the determined correction amount to the display control unit 161, and causes the display control unit to display an image obtained by correcting the brightness of the entire image displayed so far by the correction amount.

  The lightness changing unit 73 receives a reduction level for each of the plurality of divided regions from the lightness determining unit 71, and receives a wiping operation frequency count value for each of the plurality of divided regions from the wiping operation number counting unit 61. The brightness changing unit 73 decreases the reduction level in proportion to the operation count value for each of the plurality of divided regions. Specifically, if the reduction level of a certain divided area is the fifth level and the wiping operation count value is “1”, the reduction level is lowered to the reduction level 4 and if the wiping operation count count is “2”. The reduction level is lowered to reduction level 3, and if the wiping operation count value is “3”, the reduction level is reduced to reduction level 2, and if the wiping operation count value is “4”, the reduction level is reduced to level 1. If the wiping operation count value is “5” or more, the reduction level is lowered to the reduction level 0. Further, if the reduction level of a certain divided area is the third level and the wiping operation count value is “1”, the reduction level is lowered to the reduction level 2, and if the wiping operation count value is “2”, the reduction level is set. The level is lowered to reduction level 1, and if the wiping operation count value is “3” or more, the reduction level is lowered to reduction level 0.

  The lightness changing unit 73 reduces the reduction level determined by the lightness determining unit 71 based on the count value of the number of wiping operations for each of the plurality of divided regions. Therefore, each time the user performs the wiping operation, The reduction level of the divided area is reduced, and the brightness gradually returns to the original brightness. For this reason, it is possible to notify the user of the divided area where the wiping operation has been performed by a change in brightness. In addition, the user can see the image displayed on the LCD 165 to determine a divided area having a lower brightness than other divided areas, and can know that a wiping operation is necessary.

  FIG. 6A is a diagram illustrating an example of the reduction level of each of the divided regions divided into a plurality of regions. Referring to FIG. 6A, one divided region is indicated by one frame, a divided region indicated by thin line hatching indicates the first reduction level, and a divided region indicated by thick line hatching is the second one. This indicates a reduction level. The divided area indicated by the bold hatching is displayed with a lower brightness than the divided area indicated by the thin hatching, so that it is possible to notify the user that there is a high possibility that the area is dirty due to the difference in brightness. . In addition, since the divided areas that are neither thick-line hatched nor thin-line hatched are displayed with higher brightness than the hatched divided areas, it is unlikely that they are stained due to the difference in brightness. Users can be notified.

  FIG. 6B shows the number of wiping operations for each of the divided areas divided into a plurality. Here, the divided area where the number of wiping operations is one is indicated by hatching with a horizontal line. FIG. 6C is a diagram illustrating an example of a reduction level after the wiping operation for each of the divided regions divided into a plurality of regions. In the reduction level shown in FIG. 6A, the reduction level is shown when one wiping operation is performed on the divided areas shown in FIG. 6B. For the divided area where the wiping operation has been performed, the divided area which has been the first reduction level is changed to the reduction level 0, and the divided area which has been the second reduction level is changed to the first reduction level. For this reason, it is possible to notify the user of the divided areas that require further wiping operation by the difference in brightness.

  FIG. 7 is a flowchart illustrating an example of the flow of the display mode switching process. The display mode switching process is a process executed by CPU 111 when CPU 111 provided in MFP 100 executes a program stored in ROM 113, HDD 115, or CD-ROM 118.

  Referring to FIG. 7, CPU 111 sets the display mode to the normal mode (step S01). In the next step S02, it is determined whether or not the indicated position has been detected. If coordinates are input from touch panel 169, it is determined that the designated position has been detected. The process waits until the designated position is detected (NO in step S02). When the designated position is detected, the process proceeds to step S03.

  In step S03, “1” is set to the variable n. The variable n is a variable for specifying any of the plurality of divided regions. In the next step S04, a divided area including the designated position detected in step S02 is specified as the first area among the plurality of divided areas. In the next step S05, as in step S02, it is determined whether or not the indicated position has been detected. If the designated position is detected, the process proceeds to step S06; otherwise, the process proceeds to step S09. When the process proceeds to step S06, the designated position is detected continuously by the touch panel 169.

  In step S06, a divided region including the designated position detected in step S05 is specified from among the plurality of divided regions. In step S07, it is determined whether or not the divided area specified in step S06 is the same as the nth area. If n = 1, it is determined whether or not it is the same as the first area specified in step S04. If the divided area identified in step S06 is the same as the nth area, the process returns to step S05. If not, the process proceeds to step S08. When the variable n is “1”, the process returns to step S05 when the coordinates in the first area are continuously detected as the designated position.

  If the designated position is not detected in step S05, the process proceeds to step S10. The process proceeds to step S <b> 10 when the coordinates continuously input from the touch panel 169 are not input, and when the user stops the operation of instructing the touch panel 169.

  In step S10, the process branches depending on the value of the variable n. If variable n is “1”, the process proceeds to step S11. If variable n is not “1”, the process proceeds to step S15. When the variable n is “1”, an instruction operation by the user is detected, and when the variable n is other than “1”, a wiping operation by the user is detected.

  In step S11, the number of uses corresponding to the first area is incremented. In step S12, a threshold value T (i) for the first region is set. The threshold value T (i) indicates the threshold value T (i) corresponding to the i-th divided area that is the first area. The threshold value T (i) is determined by the number of uses. Here, if the number of uses is 0, the threshold T (i) is set to “0”, and if the number of uses is greater than 0 and less than or equal to 10, the threshold T (i) is set to “1”. If the number of times is greater than 10 and less than or equal to 20, the threshold value T (i) is set to “2”. If the number of times of use is greater than 20 and less than or equal to 30, the threshold value T (i) is set to “3”. If the number of times is greater than 30 and less than or equal to 40, the threshold value T (i) is set to “4”, and if the use count value is greater than 40, the threshold value T (i) is set to “5”.

  In the next step S13, history information including the indication position detected in step S02 and the time at that time is stored in the HDD 115.

  In the next step S14, it is determined whether or not the maximum value of the number of uses corresponding to each of the plurality of divided areas is equal to or greater than the threshold value T1. If the maximum value of the number of uses is greater than or equal to threshold value T1, the process proceeds to step S14. If not, step S15 is skipped and the process proceeds to step S21. In step S15, the display mode is set to the cleaning mode, and the process proceeds to step S21. At this time, the LED 177 is turned on or blinked. Here, an example has been described in which the display mode is switched to the cleaning mode when the maximum number of times of use becomes equal to or greater than the threshold value T1, but the average value of the number of times of use corresponding to each of the plurality of divided regions It is good also as a trigger which switches display mode to cleaning mode by comparing with.

  The process proceeds to step S16 when a first area to an nth area, which are two or more different divided areas among a plurality of divided areas obtained by dividing the display surface of touch panel 169 or LCD 165, are designated. In step S16, the number of wiping operations corresponding to each of the first area to the nth area is incremented. In step S17, it is determined whether or not the display mode is set to the cleaning mode. If the display mode is set to the cleaning mode, the process proceeds to step S18; otherwise, the process proceeds to step S21.

  In step S18, it is determined whether or not the number of wiping operations is equal to or greater than a threshold value T (i) corresponding to the divided area in all the divided areas. The threshold value T (i) indicates the threshold value T (i) corresponding to the i-th divided region, and is a value set in step S12. A plurality of divided areas are selected in order, the number of wiping operations corresponding to the i-th divided area is compared with a threshold value T (i) corresponding to the i-th divided area, and the wiping operation is performed for each divided area. It is determined whether or not the number of times is equal to or greater than a threshold value T (i). If the number of wiping operations is greater than or equal to threshold value T (i) in all of the plurality of divided areas, the process proceeds to step S19. If not, the process proceeds to step S21.

  In step S19, the display mode is switched to the normal mode, and the process proceeds to step S18. In this case, the LED 177 is turned off. In step S18, the number of uses and the number of wiping operations for each of the plurality of divided areas are reset to “0”, the history information stored in HDD 115 is deleted, and the process proceeds to step S21.

  In step S21, it is determined whether or not the power is turned off. If MFP 100 is turned off, the process ends. If not, the process returns to step S02.

  FIG. 8 is a flowchart illustrating an example of the flow of the display mode changing process. The display mode changing process is a process executed by CPU 111 when CPU 111 provided in MFP 100 executes a program stored in ROM 113, HDD 115, or CD-ROM 118.

  Referring to FIG. 8, CPU 111 obtains a screen to be displayed on LCD 165 (step S31). In the next step S32, the process is branched depending on the display mode. If the display mode is set to the cleaning mode, the process proceeds to step S33; otherwise, the process proceeds to step S44.

  In step S44, the screen acquired in step S31 is output to the display control unit 161 and displayed on the LCD 165. Thereafter, the process returns to step S31. The screen output to the display control unit 161 is a screen after being corrected with a correction amount determined based on the amount of light detected by the brightness sensor 175.

  In step S33, the screen acquired in step S31 is divided into a plurality of divided areas. The divided areas to be divided at this point are the same as the divided areas obtained by dividing the display surface of the touch panel 169 or the LCD 165 into a plurality in the display mode switching process. In the next step S34, one of the plurality of divided regions is selected as a processing target. Then, the number of uses corresponding to the selected divided area is acquired (step S35).

  In the next step S36, a reduction level is determined based on the number of uses acquired in step S35. The reduction level corresponding to the number of times of use is determined with reference to the level table stored in advance in HDD 110 and shown in FIG. In the next step S37, the number of wiping times corresponding to the divided area selected in step S34 is acquired. Then, the reduction level is changed from the acquired number of wiping operations (step S38). The reduction level is reduced by one with respect to the number of wiping operations performed once. Specifically, if the reduction level is the fifth level and the number of wiping operations is “1”, the level is reduced to a reduction level 4; if the number of wiping operations is “2”, the level is reduced to a reduction level 3; If the number of wiping operations is “4”, the level is reduced to a reduction level 1, and if the number of wiping operations is “5” or more, the level is reduced to a reduction level 0. Further, if the reduction level of a certain divided area is the third level and the number of wiping operations is “1”, the level is reduced to the reduction level 2, and if the number of wiping operations is “2”, the level is reduced to the reduction level 1 and the number of wiping operations is If is 3 or more, the reduction level is reduced to zero.

  In the next step S39, the brightness of the divided area selected as the processing target in step S34 is changed. A reduction rate determined in step S36 and associated with the reduction level changed in step S38 by the level table is determined, and the brightness of the image of the divided region selected in step S34 is changed.

  In the next step S40, a correction amount is acquired. A correction amount is determined based on the light amount detected by the brightness sensor 175. In step S41, the brightness of the divided area whose brightness has been changed in step S39 is corrected with the determined correction amount.

  In the next step S42, it is determined whether or not there is a divided area that is not selected as a processing target among the plurality of divided areas. If there is a divided area not yet selected as a processing target, the process returns to step S34. If not, the process proceeds to step S43. In step S43, the screen with the corrected brightness is output to the display control unit 161 and displayed on the LCD 165.

  As described above, MFP 100 according to the present embodiment detects an instruction operation when one or more positions continuously detected by touch panel 169 are within one divided area of a plurality of divided areas obtained by dividing the display surface. When the number of instructions is counted for each of the plurality of divided areas, and the plurality of positions continuously detected by the touch panel 169 are within two or more adjacent divided areas among the plurality of divided areas obtained by dividing the display surface, The wiping operation is detected, the number of wiping operations is counted for each of the plurality of divided areas, and based on the number of instructions and the number of wiping operations, the display mode is different from the normal mode and the cleaning mode in which the display mode of the image differs Switch to one. The display mode is switched based on the number of instructions and the number of wiping operations, and the display mode of the image is different between the normal mode and the cleaning mode. For this reason, the cleaning time can be automatically notified to the user, and the display mode can be notified to the user from the difference in display mode. Since only the display mode is changed in a state where an image is displayed, it can be different from the display at the time of sleep mode and failure.

  While the display mode is set to the cleaning mode, the brightness of the operation screen displayed on the LCD 165 is set lower than the brightness of the operation screen displayed on the LCD 165 while the normal mode is set. Therefore, the display mode can be notified to the user from the difference in brightness.

  Moreover, since the brightness of the operation screen is partially determined based on the number of instructions counted for each of the plurality of divided areas, the number of instructions can be notified to the user for each of the plurality of divided areas. The greater the number of instructions, the higher the possibility of contamination, so that the user can be notified of the portion that is likely to be dirty with a difference in brightness.

  Further, since the brightness of the operation screen is partially changed based on the number of wiping operations counted for each of the plurality of divided areas, the user can be notified of the number of wiping operations for each of the plurality of divided areas. The user can be notified of the divided areas where the wiping operation has not been performed and the divided areas where the wiping operation has been performed, with the difference in brightness.

  Furthermore, since the brightness of the operation screen is corrected based on the amount of light detected by the brightness sensor 175, an easy-to-see operation screen can be displayed in response to environmental changes.

  In this embodiment, as an example of changing the display mode of an image, an example in which the brightness of the screen is partially changed is shown. However, the amount of light of the backlight of the LCD 165 may be partially changed. Good.

  In the above-described embodiment, MFP 100 has been described as an example of an image processing apparatus. However, a display control method that causes MFP 100 to execute the display mode switching process shown in FIGS. It goes without saying that the invention can be specified as a display control program for causing the CPU 111 to control the above.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

<Appendix>
(1) The image forming apparatus according to any one of claims 1 to 9, further comprising a light emitting unit that is provided separately from the display unit and emits light to notify the display mode.
(2) The image forming apparatus according to any one of claims 1 to 9, further comprising a sound output unit that is provided separately from the display unit and outputs a sound to notify the display mode.

100 MFP, 51 Instruction detection unit, 53 Usage count unit, 55 Mode switching unit, 57 Display mode control unit, 59 Operation detection unit, 61 Operation frequency count unit, 63 Reset unit, 65 History storage unit, 67 Brightness detection unit 71 brightness determination unit, 73 brightness change unit, 110 main circuit, 111 CPU, 112 communication I / F unit, 113 ROM, 114 RAM, 115 HDD, 116 facsimile unit, 117 external storage device, 120 automatic document feeder, 130 Document reading unit, 140 Image forming unit, 150 Paper feeding unit, 160 Operation panel, 161 Display control unit, 163 VRAM, 165 LCD, 167 Input control unit, 169 Touch panel, 170 Hard key unit, 171 Start key, 175 Brightness sensor .

Claims (11)

Display means for displaying an image;
A detection unit provided to be superimposed on the display unit, and detecting a position indicated on a display surface of the display unit;
Instruction detecting means for detecting an instruction operation when a position detected by the detecting means satisfies a first detection condition;
A use frequency counting unit that counts the number of times the detection unit is used in response to an instruction operation being detected by the instruction detection unit;
A wiping operation detecting means for detecting a wiping operation when the position detected by the detecting means satisfies a second detection condition;
In response to the wiping operation being detected by the wiping operation detecting means, the number of wiping operation times counting means for counting the number of wiping operations for wiping the display surface of the display means,
Based on the counted number of instructions and the counted number of wiping operations, the display mode of the display means is either the normal mode or the normal mode, which is different from the cleaning mode in which the display mode of the image displayed on the display means is different. An image processing apparatus comprising: The instruction detection unit detects an instruction operation when one or more positions continuously detected by the detection unit are within one divided region of the plurality of divided regions obtained by dividing the display surface,
The number-of-uses counting unit counts the number of instructions for each of the plurality of divided regions in response to detection of an instruction by the instruction detection unit
The image processing apparatus according to claim 1, wherein the mode switching unit switches the display mode from the normal mode to the cleaning mode when the number of instructions counted for each of the plurality of divided regions satisfies a first switching condition. The wiping operation detecting means detects a wiping operation when a plurality of positions continuously detected by the detecting means are in two or more adjacent divided areas among a plurality of divided areas obtained by dividing the display surface,
The wiping operation counting means counts the number of wiping operations for each of the plurality of divided areas in response to the wiping operation being detected by the wiping operation detecting means.
The image processing apparatus according to claim 2, wherein the mode switching unit switches the display mode from the cleaning mode to the normal mode when the number of wiping operations counted for each of the plurality of divided regions satisfies a second switching condition.   A history storage means for storing a history including a position where the detected wiping operation is detected on the display surface of the display means in response to the wiping operation being detected by the wiping operation detecting means. The image processing apparatus according to claim 3.   While the display mode is set to the cleaning mode, the brightness of the operation screen displayed on the display means is different from the brightness of the operation screen displayed on the display means while the normal mode is set. The image processing apparatus according to claim 1, further comprising display control means. The instruction detection unit detects an instruction operation when one or more positions continuously detected by the detection unit are within one divided region of the plurality of divided regions obtained by dividing the display surface,
The number-of-uses counting unit counts the number of instructions for each of the plurality of divided regions in response to detection of an instruction by the instruction detection unit
The mode switching means switches the display mode from the normal mode to the cleaning mode when the number of instructions counted for each of the plurality of divided regions satisfies the first switching condition,
The image processing apparatus according to claim 5, wherein the display control unit includes a lightness determination unit that partially determines the lightness of the operation screen based on the number of instructions counted for each of the plurality of divided regions. The wiping operation detecting means detects a wiping operation when a plurality of positions continuously detected by the detecting means are in two or more adjacent divided areas among a plurality of divided areas obtained by dividing the display surface,
The wiping operation counting means counts the number of wiping operations for each of the plurality of divided areas in response to the wiping operation being detected by the wiping operation detecting means.
The mode switching means switches the display mode from the cleaning mode to the normal mode when the number of wiping operations counted for each of the plurality of divided regions satisfies the second switching condition,
The display control means further includes brightness changing means for changing the brightness determined for each of the plurality of divided areas by the brightness determination means based on the number of wiping operations counted for each of the plurality of divided areas. The image processing apparatus according to claim 6. It further comprises a brightness detection means for detecting external brightness,
The image processing apparatus according to claim 6, wherein the brightness determination unit includes a correction unit that corrects the brightness of the operation screen based on the detected external brightness.   The image according to any one of claims 1 to 8, further comprising reset means for resetting the number of instructions and the number of wiping operations counted for each of the plurality of divided areas when the display mode is switched from the cleaning mode to the normal mode. Processing equipment. Display means for displaying an image;
A display control method executed by an image processing apparatus comprising: a detection unit that is provided so as to be superimposed on the display unit and detects a position indicated on a display surface of the display unit;
Detecting a pointing operation when a position detected by the detection means satisfies a first detection condition;
Counting the number of times the detection means is used in response to detecting an instruction in the step of detecting the instruction operation;
A step of detecting a wiping operation when the position detected by the detection means satisfies a second detection condition;
Counting the number of wiping operations to wipe the display surface of the display means in response to the wiping operation being detected in the step of detecting the wiping operation;
Based on the counted number of instructions and the counted number of wiping operations, the display mode of the display means is either the normal mode or the normal mode, which is different from the cleaning mode in which the display mode of the image displayed on the display means is different. A display control method comprising the steps of: Display means for displaying an image;
A display control program executed by a computer for controlling the image processing apparatus, the detection means being provided to be superimposed on the display means, and detecting a position indicated on the display surface of the display means,
Detecting a pointing operation when a position detected by the detection means satisfies a first detection condition;
Counting the number of times the detection means is used in response to detecting an instruction in the step of detecting the instruction operation;
A step of detecting a wiping operation when the position detected by the detection means satisfies a second detection condition;
Counting the number of wiping operations to wipe the display surface of the display means in response to the wiping operation being detected in the step of detecting the wiping operation;
Based on the counted number of instructions and the counted number of wiping operations, the display mode of the display means is either the normal mode or the normal mode, which is different from the cleaning mode in which the display mode of the image displayed on the display means is different. A display control program for causing the computer to execute the step of setting the above.

Images