JP2014099089A - Display control device, display control method, and display control program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase convenience of input operation when information is roughly displayed on a screen of a touch panel.SOLUTION: A display control device for controlling a screen displayed on a display unit which has a touch panel function for accepting an input by touch operation includes: specified position detection means for detecting a position which is specified by touch operation on the screen; selected item detection means for detecting selected items included in a predetermined range centering on the specified position; and enlarged display means for, on the basis of the number of selected items detected by the selected item detection means, enlarging and displaying a predetermined area centering on the specified position.

Description

  The present invention relates to a display control device, a display control method, and a display control program.

  In recent years, various electronic devices such as smartphones, tablet terminals, PCs (Personal Computers), digital cameras, multifunction devices, game machines, and vending machines are equipped with touch panels, and touch panels are used for input from users. It has become common. Depending on the screen size and resolution of the touch panel and the displayed content (for example, the configuration of the Web page), information such as characters and images may be displayed in a small size. For this reason, for example, when a link on a Web page is touched with a finger, the display of the link is small, and there is a case where a user's intended location cannot be touched. In particular, when links are displayed in a dense manner, it is possible to make a remarkable selection.

  Therefore, a technique for enlarging and displaying a certain part by performing a specific operation such as a pinch operation or a simple touch operation on the touch panel is generally known. As a result, since characters and the like are enlarged, it is easy for the user to select a link and the like.

  However, each time the character is small and it is difficult to select a link, the user must perform a pinch operation or the like, or the user unintentionally enlarges it unnecessarily. Therefore, there is a problem that the user takes time to grasp a specific operation and is forced to perform a specific operation one by one, which impairs user convenience.

  On the other hand, in Patent Document 1, for the purpose of further improving the convenience of the touch operation on the touch panel, “in response to a specific touch operation for instructing an enlarged display being performed intentionally, A technique for executing an enlarged display of a peripheral region at the position is described. Thereby, when a specific touch operation is performed in a certain window, an enlarged display in a certain window is executed, so that an erroneous operation in which the user unintentionally enlarges the display can be avoided.

  However, in the technique described in Patent Document 1, the user has to grasp a specific operation for enlarging display, or has to perform a specific operation every time for enlarging display. Problems that impair user convenience cannot be solved.

  Therefore, the present invention has been made in view of the above points, and an object of the present invention is to improve the convenience of an input operation when information is displayed on a screen of a touch panel in a complicated manner.

  In order to solve the above problem, the display control device is a display control device that controls a screen displayed on a display unit having a touch panel function that receives an input by a touch operation, and is a position specified by the touch operation on the screen. A designated position detecting means for detecting the selected item, a selected item detecting means for detecting a selected item included in a predetermined range centered on the designated position, and the number of the selected items detected by the selected item detecting means. And an enlarged display means for enlarging and displaying a predetermined area centered on the designated position.

  According to the embodiment of the present invention, it is possible to improve the convenience of the input operation when information is displayed on the screen of the touch panel in a complicated manner.

It is a figure which shows an example for demonstrating the schematic characteristic of embodiment of this invention. 1 is a diagram illustrating an example of a hardware configuration of an image forming apparatus according to an embodiment of the present invention. It is a figure which shows an example of the hardware constitutions of the operation panel in embodiment of this invention. 1 is a diagram illustrating an example of a functional configuration of an image forming apparatus in an embodiment of the present invention. It is a figure which shows an example for demonstrating the designated position in embodiment of this invention. It is a figure which shows an example for demonstrating the selection item in embodiment of this invention. It is a figure which shows an example of the detection method of the selection item in embodiment of this invention. It is a figure which shows an example of the information memorize | stored in the enlarged display determination threshold value memory | storage means in embodiment of this invention. It is a figure which shows an example of the information memorize | stored in the enlarged display information storage means in embodiment of this invention. It is a figure which shows an example of the method of producing | generating the screen by which the predetermined area | region was expanded and displayed in embodiment of this invention. FIG. 6 is a flowchart illustrating an example of a processing procedure related to display control of the image forming apparatus according to the embodiment of the present invention. It is a figure which shows an example of the information memorize | stored in the display capability memory | storage means in the 1st modification of embodiment of this invention. It is a figure which shows an example of the information memorize | stored in the target font size memory | storage means in the 1st modification of embodiment of this invention. FIG. 10 is a flowchart illustrating an example of a processing procedure related to display control of the image forming apparatus according to the first modification of the embodiment of the present invention. It is a figure which shows an example of the screen in which the predetermined area | region was expanded and displayed in the 2nd modification of embodiment of this invention.

  Hereinafter, embodiments of the present invention (hereinafter referred to as “embodiments”) will be described with reference to the drawings.

[Outline of Embodiment of the Present Invention]
FIG. 1 is a diagram illustrating an example for explaining schematic features of an embodiment of the present invention.

  As shown in FIG. 1A, for example, a screen 901 described in an HTML (Hyper Text Markup Language) format is displayed on a display unit 21 having a touch panel function included in an image forming apparatus or the like. The screen 901 includes, for example, text data 902 and a hyperlink data (hyperlink data) group 903 including link destination information such as a URL (Uniform Resource Locator) associated with another site or the like. In the hyperlink data group 903, for example, a plurality of links such as “hyperlink A” and “hyperlink B” are displayed. Here, the user tries to specify a link destination to be referred to in the hyperlink data group 903 by a touch operation. For example, the size of the screen 901 or the size of the displayed character is small, or the finger is moved to the mouse cursor or the like. In comparison with this, it is difficult to specify a detailed portion, so that it is difficult for the user to touch the intended link, and it is easy to select by mistake.

  Therefore, according to the display control method in the image forming apparatus (an example of the display control apparatus) according to the embodiment of the present invention, it is determined whether or not the links are dense around the position touched by the user on the screen 901, When the area is dense, the area around the touched position can be enlarged and displayed. Specifically, when the user designates the screen 901 by a touch operation, the number of links included in a predetermined range 904 centered on the touched position is counted. Next, it is determined whether or not the number of links included in the predetermined range 904 is greater than or equal to a predetermined number. When the number of links included in the predetermined range 904 is equal to or greater than the predetermined number, as illustrated in FIG. 1B, an enlarged area in which the predetermined area centered on the position touched by the user is enlarged. 905b is displayed superimposed on the screen 901. Thereby, since the user can touch the enlarged character (link), it becomes easy to select the intended link without an erroneous operation.

  In the embodiment of the present invention, touching a display unit 21 with a finger or pen from a non-contact state is referred to as touch. The link in the embodiment of the present invention is data including a hyperlink, and is an example of a selection item that is an item that can be selected by the user. The selected items include not only text data but also buttons, image data, and the like that trigger an event. In addition, the “predetermined range” in the embodiment of the present invention refers to, for example, a circular range centered on the position of the screen touched by the user. Further, the “predetermined area” in the embodiment of the present invention refers to, for example, a rectangular area centered on the position of the screen touched by the user to be enlarged and displayed. Note that the shapes of the “predetermined range” and the “predetermined region” are not limited to the above, and may be circular or rectangular. As described above, the image forming apparatus according to the embodiment of the present invention is an example of a display control apparatus that controls the screen displayed on the display unit 21. The display control device is not limited to the image forming device, and includes electronic devices such as a smartphone, a tablet terminal, a PC, and a digital camera. The language in which the screen displayed on the display unit 21 is described is not limited to HTML, but may be a language such as DHTML (Dynamic HTML) or XML (Extensible Markup Language).

[Hardware configuration]
A hardware configuration of an operation panel having an image forming apparatus and a touch panel provided with and controlled by an operation panel according to an embodiment of the present invention will be described with reference to FIGS.

<Image forming apparatus>
FIG. 2 is a diagram illustrating an example of a hardware configuration of the image forming apparatus 100 according to the embodiment of the present invention.

  The image forming apparatus 100 according to the embodiment of the present invention includes a display unit 21, a storage medium I / F 22, a controller 23, a data communication I / F 24, an HDD (Hard Disk Drive) 209, a scanner 25, and a plotter 26. Are connected to each other by a bus.

  The display unit 21 is an operation panel of a touch panel, and includes an input device 201 and a display device 202. The input device 201 includes a touch panel and the like, and inputs each operation signal to the image forming apparatus 100. Used for. The display device 202 is configured by a display or the like and displays, for example, various types of information related to the image forming operation. The data communication I / F 24 includes an interface device 208, and is an interface that connects the image forming apparatus 100 to a data transmission path such as a network. The HDD 209 stores various data such as received document data and read image data handled by the image forming apparatus 100. Also, the HDD 209 manages these various data by a predetermined file system or DB (Data Base).

  The various data stored in the HDD 209 includes electronic data recorded by an external device such as a smartphone or a digital camera. In such a case, it is provided to the image forming apparatus 100 by a recording medium 204 such as an SD card, or uploaded via a network or the like that is a data transmission path. The recording medium 204 is set in the drive device 203 included in the storage medium I / F 22, and various data is stored in the HDD 209 from the recording medium 204 via the drive device 203.

  The controller 23 includes a ROM 205, a RAM 206, and a CPU 207, and the ROM 205 stores programs executed when the image forming apparatus 100 is activated and various data. The RAM 206 temporarily stores various programs and data read from the ROM 205 and the HDD 209. Further, the CPU 207 executes a program temporarily stored in the RAM 206. Further, the CPU 207 controls the display unit 21. For example, when the print data is received via the data communication I / F 24, the controller 23 executes a program (PDL parser) that can interpret a PDL (Page Description Language) read from the ROM 205 onto the RAM 206 by the CPU 207. Then, the print data is interpreted to generate a bitmap image.

  The scanner 25 has an image reading device 210 and optically reads a document placed on a reading surface and generates image data. The plotter 26 has a printing device 211, and prints a bitmap image on a recording sheet by, for example, an electrophotographic process method.

  As described above, in the image forming apparatus 100 according to the embodiment of the present invention, a plurality of functions such as a copy, a printer, a facsimile, and a scanner are realized by the above hardware configuration.

<Display section>
FIG. 3 is a diagram illustrating an example of a hardware configuration of the display unit 21 included in the image forming apparatus 100 according to the embodiment of the present invention.

  As shown in FIG. 3, a dedicated CPU 1 independent of the CPU 207 on the controller 23 which is a main body control board is mounted on the control board P of the display unit 21.

  The display unit 21 and the controller 23 are connected by communication means 10 such as synchronous serial, and are configured to be capable of bidirectional data communication such as control commands (for example, drawing commands) and key input information. The dedicated CPU 1 of the display unit 21 is connected to a ROM 2 storing a control program for the display unit 21 and a RAM 3 used as a work area.

  In addition, an LCD controller 4 for controlling an LCD (Liquid Crystal Display) module 6, a touch panel 7 disposed on the LCD module 6, a driver 9 for a key substrate 8, and the like are connected.

  Furthermore, it is possible to read / write data from / to an SDRAM (Synchronous DRAM) 5 called a video RAM, which is called VRAM for short, which stores display pixel data to the LCD module 6 via the LCD controller 4. It is also possible to control the backlight of the key switch, LED (Light Emitting Diode) 8 and LCD module 6 on the key board 8.

  The LCD controller 4 performs a refresh process of the SDRAM 5 and a display data transfer (display signal output) from the SDRAM 5 to the LCD module 6. The output 11 of this signal can be suppressed by setting in the internal register.

  The LCD controller 4 also has a touch panel I / F function. When the touch panel 7 is pressed, the LCD controller 4 interrupts the dedicated CPU 1.

  In addition, on each control board, connecting means for an external recording medium (such as a flash memory) such as an IC (Integrated Circuit) card is added, so that data can be read from the external recording medium. Yes. Although the card slot has been described as the connection means, the present invention is not limited to this as long as the program and data can be read from the external recording medium. Whether or not an IC card is installed in the card slot can be confirmed at the input port.

  As described above, the controller 23 of the image forming apparatus 100 according to the embodiment of the present invention controls the screen displayed on the operation unit 21 with the above hardware configuration.

[Function configuration]
FIG. 4 is a diagram illustrating an example of a functional configuration of the image forming apparatus 100 according to the embodiment of the present invention. Each function is realized by the CPU 207 (FIG. 2) executing a program and cooperating with hardware.

  The image forming apparatus 100 includes a designated position detection unit 101, a selected item detection unit 102, an enlarged display unit 103, an enlarged display determination threshold storage unit 107, an enlarged display information storage unit 108, and the like. Of the above functions, the controller 23 includes designated position detection means 101, selected item detection means 102, and enlarged display means 103. The enlarged display unit 103 includes an enlarged display determination unit 104, an enlarged display screen generation unit 105, and an enlarged display release unit 106.

  The input position detection unit 101 detects a position (hereinafter referred to as “specified position”) designated by a user's touch operation on the screen displayed on the display unit 21 that is a touch panel. The designated position is expressed as coordinates using pixel units (px) as shown in FIG.

  FIG. 5 is a diagram illustrating an example for explaining the designated position in the embodiment of the present invention. As shown in FIG. 5, the designated position is a coordinate (x) where the upper left end of the display unit 21 is the origin, the width (width) direction of the display unit 21 is the x axis, and the height direction is the y axis. , Y). For example, when the number of pixels of the display unit 21 is 1280 × 720 (px), the coordinates that can be taken by the designated position are 0 ≦ x ≦ 1280 and 0 ≦ y ≦ 720.

  Returning to FIG.

  The selected item detection unit 102 detects a selected item such as a link that exists within a predetermined range from the designated position on the screen of the display unit 21. A method for detecting the selected item will be described with reference to FIGS. 6 and 7.

  FIG. 6 is a diagram illustrating an example for explaining a selection item in the embodiment of the present invention.

  FIG. 7 is a diagram illustrating an example of a selection item detection method according to the embodiment of the present invention.

  In the example of FIG. 6, a character “hyperlink A” including hyperlink information is displayed on the screen of the display unit 21 that is a touch panel. The number of pixels of the display unit 21 is, for example, 1280 × 720 (px). The character “hyperlink A” is displayed at the position of the coordinates (640, 360) in pixel units (px) by the code described in the HTML source 911. As described above, the position of the selected item and the designated position are expressed using the same coordinate axis in pixel units (px) on the screen of the display unit 21. Note that the HTML source 911 for designating the position of the selected item is not limited to the description method of FIG.

  In the example of FIG. 7, the designated position by the user's touch operation on the screen of the display unit 21 is (730, 450), and the character “hyperlink A” is located at (640, 360). In the example of FIG. 7, the characters “hyperlink A”, “hyperlink B”,..., “Hyperlink J” displayed on the screen of the display unit 21 are selection items (links). When the user touches the screen, a selection item included in a predetermined range 904 that is a circle centered on the designated position (730, 450) is detected. The radius of the predetermined range 904 is 100 px in the example of FIG. 7, but can be arbitrarily changed according to the number of pixels of the display unit 21, the size of characters, and the like. Further, the predetermined range 904 is not limited to a circle but may be a rectangle or the like, for example.

  Returning to FIG.

  The selected item detection unit 102 detects a selected item (link) included in a predetermined range 904 centered on the designated position by the method described above. In addition, the number of selection items included in the predetermined range 904 is specified by this detection process. When the selected item detecting unit 102 detects the selected item, the selected item detecting unit 102 notifies the enlarged display determining unit 104 of the designated position (coordinates) and the number of selected items.

  The enlarged display determination unit 104 displays an enlarged display of a predetermined area centered on the specified position based on the number of selected items notified from the selected item detection unit 102 and the threshold value stored in the enlarged display determination threshold value storage unit 107. It is determined whether or not. The enlarged display determination unit 104 determines to execute enlarged display when the notified number of selection items is equal to or greater than a threshold value. On the other hand, the enlarged display determination unit 104 determines that the enlarged display is not performed when the notified number of selection items is not equal to or greater than the threshold value. When the enlarged display determination unit 104 determines to execute the enlarged display, the enlarged display determination unit 104 notifies the enlarged display screen generation unit 105 of the determination result.

  The enlarged display determination threshold storage unit 107 stores, for example, a threshold (enlarged display determination threshold) for determining whether or not to enlarge and display a predetermined area centered on the specified position, using the RAM 206, the HDD 209, or the like.

  FIG. 8 is a diagram illustrating an example of information stored in the enlarged display determination threshold storage unit 107 in the embodiment of the present invention. In the example of FIG. 8, “enlarged display determination threshold” is stored as “3”, and when the number of selected items is 3 or more, it indicates that the enlarged display is performed. Information stored in the enlarged display determination threshold storage unit 107 is set in advance by a user or the like.

  Returning to FIG.

  The enlarged display information storage unit 108 stores information used by the enlarged display screen generation unit 105 to enlarge and display a predetermined area.

  FIG. 9 is a diagram showing an example of information stored in the enlarged display information storage unit 108 in the embodiment of the present invention. As shown in FIG. 9, the enlarged display information storage means 108 stores “area (width)” and “area (height)”, “enlargement magnification”, “character color”, and “character format” in units of pixels. Is stored. “Area (width)” and “Area (height)” are parameters for designating a predetermined area to be enlarged and displayed in units of pixels. The predetermined area in the example of FIG. 9 is a rectangular area having a width 420 × height 220 with the center as the designated position. “Enlargement magnification” is a magnification for enlarging one side of a predetermined area. Since the enlargement magnification in the example of FIG. 9 is “2.0” times, the size of the enlarged predetermined region is 840 width × height 440. “Character color” and “character format” are parameters for changing the representation method of the selected item located closest to the specified position among the selected items included in the enlarged predetermined area. “Character color” is a value used when changing the character color of the selected item (link) closest to the specified position when a predetermined area is enlarged. “Character format” is a value used to change the character format of the selected item (link) closest to the specified position when a predetermined area is enlarged. In the “character format”, for example, information for changing to bold or italic is set. “Character color” and “character format” are information for making it easier for the user to select and select the selected item. Information stored in the enlarged display information storage unit 108 is set in advance by a user or the like.

  Returning to FIG.

  When the enlarged display screen generating unit 105 receives the determination result of executing the enlarged display from the enlarged display determining unit 104, the predetermined area centered on the specified position is enlarged based on the information stored in the enlarged display information storage unit 108. Generate the displayed screen. Then, the enlarged display screen generation means 105 displays the generated screen on the display unit 21 (display device 202). The generation processing of the enlarged display screen of a predetermined area by the enlarged display screen generation means 105 will be described with reference to FIG.

  FIG. 10 is a diagram illustrating an example of a method for generating a screen in which a predetermined area is enlarged and displayed in the embodiment of the present invention.

  In the example of FIG. 10A, (730, 450) is designated by the user's touch operation on the screen of the display unit 21. Here, the selected item (link) closest to the designated position (730, 450) is the character “hyperlink E”. A predetermined area 905a centered on the designated position is displayed on the screen. The predetermined area 905 a is generated by the enlarged display screen generation unit 105 based on “area (width)” and “area (height)” that define the size of the predetermined area 905 a stored in the enlarged display information storage unit 108. It is specified.

  In the example of FIG. 10B, an enlarged area 905b obtained by enlarging the predetermined area 905a designated in FIG. 10A is displayed on the screen. The enlarged area 905b obtained by enlarging the predetermined area 905a is enlarged by the enlarged display screen generation means 105 based on the “magnification ratio”, “character color”, and “character format” stored in the enlarged display information storage means 108. Is displayed. Here, when the information shown in FIG. 9, for example, is set for “enlargement magnification”, “character color”, and “character format”, the size (one side) of the predetermined area 905a as shown in FIG. Is doubled, and a screen on which an enlarged area 905b in which the color and format of the character “hyperlink E” closest to the designated position is changed is displayed is generated.

  Returning to FIG.

  The enlarged display releasing means 106 releases the enlargement of the predetermined area 905a. When the enlarged display canceling unit 106 detects a touch operation of the display unit 21 (input device 201) by the user, the enlarged display canceling unit 106 deletes (closes) the predetermined area displayed in an enlarged manner. When the selected item (link) included in the predetermined enlarged area is touched, the enlarged display canceling unit 106 is enlarged and displayed when the selected item is executed (for example, the page is moved to the link destination). The predetermined area is erased. Alternatively, when the enlarged predetermined area is displayed and a touch operation outside the area is detected, the enlarged display canceling unit 106 erases the enlarged predetermined area. Alternatively, the enlarged display canceling unit 106 erases a predetermined area displayed in an enlarged manner when a touch operation on the screen by the user for a certain time (for example, 20 seconds) is not detected.

[Processing procedure]
Next, a processing procedure related to display control executed in the image forming apparatus 100 after the user touches the display unit 21 in the embodiment of the present invention will be described.

  FIG. 11 is a flowchart illustrating an example of a processing procedure related to display control of the image forming apparatus 100 according to the embodiment of the present invention. In the initial state of FIG. 11, a screen described in the HTML format is displayed on the display unit 21. And it is a state when the screen of the display part 21 is touched by the user.

  S11: The designated position detecting means 101 detects the designated position designated by the user's touch operation on the screen of the display unit 21. The designated position detection unit 101 notifies the selected item detection unit 102 of the detected designated position (coordinates).

  S12: The selected item detecting means 102 detects a selected item included in a predetermined range centered on the designated position. Then, the selected item detecting unit 102 notifies the enlarged display determining unit 104 of the designated position and the number of detected selected items.

  S13: The enlarged display determination unit 104 determines whether the notified number of selection items is equal to or greater than the threshold stored in the enlarged display determination threshold storage unit 107.

  If the number of selected items is not equal to or greater than the threshold value (NO), the process is terminated and the screen of the display unit 21 is displayed as it is.

  On the other hand, when the number of selected items is greater than or equal to the threshold (YES), the enlarged display determination unit 104 notifies the enlarged display screen generation unit 105 of the determination result and the specified position.

  S14: When the number of selected items is equal to or greater than the threshold (YES in step S13), the enlarged display screen generation unit 105 specifies a predetermined area centered on the specified position on the screen of the display unit 21. The predetermined area is designated based on “area (width)” and “area (height)” stored in the enlarged display information storage means 108.

  S15: The enlarged display screen generation means 105 enlarges the predetermined area based on the “magnification” stored in the enlarged display information storage means 108 after the predetermined area is specified, and the enlarged predetermined area is displayed. A screen (enlarged display screen) is generated. It should be noted that the character color and format of the selected item closest to the specified position included in the enlarged predetermined area are the “character color” and “character format” stored in the enlarged display information storage unit 108. Will be changed.

  S16: The enlarged display screen generation means 105 displays the generated enlarged display screen on the display unit 21 (display device 202). Then, the enlarged display screen generation unit 105 notifies the enlarged display release unit 106 that the enlarged display screen has been displayed.

  S17: When the display of the enlarged display screen is notified, the enlarged display releasing means 106 determines whether or not a touch operation is detected within a predetermined time (for example, 20 seconds) on the screen.

  Here, when the touch operation is not detected within a predetermined time (NO), the process of step S20 is executed.

  On the other hand, when a touch operation is detected within a predetermined time (YES), the process of step S18 is executed.

  S18: When the enlarged display canceling means 106 detects a touch operation within a predetermined time (YES in step S17), it is determined whether or not the touched position is a selected item in the predetermined area displayed in an enlarged manner. .

  Here, when the touched position is not the selected item in the predetermined area enlarged and displayed (NO), the process of step S20 is executed.

  On the other hand, if the touched position is a selected item in a predetermined area where the touched position is enlarged (YES), the process of step S19 is executed.

  S19: If the touched position is a selected item in a predetermined area in which the touched position is enlarged (YES in step S18), the touched selected item is executed. When the selected item is, for example, a link, the page moves to a linked page.

  S20: When a touch operation is not detected within a predetermined time (NO in step S17), or when the touched position is not a selected item in the predetermined area enlarged (NO in step S18), enlarged display The canceling means 106 erases the predetermined area displayed in an enlarged manner.

  According to the processing procedure described above, the image forming apparatus 100 according to the embodiment of the present invention has a certain number or more of selection items within a predetermined range centered on a position (designated position) touched by the user on the screen of the display unit 21. In this case, it is possible to display a screen in which a predetermined area centered on the designated position is enlarged.

  As described above, according to the embodiment of the present invention, when the selection items (links and the like) are dense on the screen of the touch panel and it is difficult to touch the selection item intended by the user, the image forming apparatus 100 is specially selected by the user. The selected item can be enlarged and displayed in a size that is easy for the user to see and touch without requiring a simple operation.

  As a result, it is possible to avoid selecting (touching) a selection item that is not the selection item intended by the user by mistake, and it is possible to easily select the selection item and to improve the operability of the user using the touch panel.

[First Modification]
In the first modification of the embodiment of the present invention, the magnification at which a predetermined area is enlarged and displayed is changed based on the display capability of the display unit 21 and the size of the characters displayed on the screen of the display unit 21. Here, the display capability of the display unit 21 is the number of pixels of the display unit 21 and the size (screen size) of the display unit 21.

  The image forming apparatus 100 according to the first modification further includes a display capability storage unit 109 that stores the display capability of the display unit 21 and a target font size storage that stores a target value of the font size that is displayed when the display is enlarged. Means 110.

  FIG. 12 is a diagram illustrating an example of information stored in the display capability storage unit 109 according to the first modification of the embodiment of the present invention. As shown in FIG. 12, the display capability storage unit 109 stores the “width w (px)” and “height h (px)” of the display unit 21 expressed in pixels and the diagonal line of the display unit 21. “Screen size n (inch)” is stored. In the example of FIG. 12, the number of pixels of the display unit 21 is width w “1280” × height h “720”, and the screen size n is “5.0” inch.

  FIG. 13 is a diagram illustrating an example of information stored in the target font size storage unit 110 according to the first modification of the embodiment of the present invention. As shown in FIG. 13, “target font size t (inch)” is stored in the target font size storage unit 110, and the size of characters included in the predetermined area when the predetermined area is enlarged and displayed. Is scaled to expand to this target font size. In the example of FIG. 13, the target font size is “0.3” (inch), but the target font size is a parameter that can be arbitrarily changed. In the example of FIG. 13, the unit of the target font size is inch (inch). However, the unit is not limited to inch. For example, pixel (px), point (pt), centimeter (cm), millimeter (mm), etc. Also good.

  Next, the processing procedure of the image forming apparatus 100 in the first modification will be described with reference to FIG.

  FIG. 14 is a flowchart illustrating an example of a processing procedure of the image forming apparatus according to the first modification of the embodiment of the present invention. In FIG. 14, the same steps as those shown in FIG. 11 are given the same step numbers, and detailed description thereof is omitted. Hereinafter, the difference from FIG. 11 will be mainly described.

  S12a: After detection of the designated position by the user's touch operation (S11), the selected item included in the predetermined range is detected by the selected item detecting means 102. At this time, in the first modification, the selected item detecting unit 102 acquires the font size of the selected item included in the predetermined range. Note that the font size of the selected item can be specified in units of pixels (px), inches (inch), points (pt), centimeters (cm), or millimeters (mm) when described in the HTML format. Here, for example, the font size of the selected item is specified in units of pixels (px). Further, when a plurality of selected items are detected and the font sizes are not all the same, the minimum font size is acquired. Note that the font size acquired when a plurality of selected items is detected is not limited to the minimum font size, and may be an average value of all font sizes, for example.

  S14a: When a predetermined area to be enlarged is specified (S14), in the first modification, the magnification (magnification) for enlarging the predetermined area is determined by the enlarged display screen generation means 105. . The enlargement magnification is determined by the following procedure.

  (Procedure 1) The enlarged display screen generation means 105 reads “width w (px)”, “height h (px)”, and “screen size n (inch)” from the display capability storage means 109, and reads the read value “ Based on “w”, “h”, and “n”, the inch per inch (inch / px) is calculated by the following formula 1.

（手順２）次に、図１４に示されるステップＳ１２ａにおいて取得されたフォントサイズを「ｆ」（ｐｘ）とすると、拡大表示をする前のフォントサイズは、

(Procedure 2) Next, assuming that the font size acquired in step S12a shown in FIG. 14 is “f” (px), the font size before the enlarged display is

として算出される。

Is calculated as

  (Procedure 3) Then, the enlarged display screen generation means 105 reads out the target font size “t” (inch) displayed when the enlarged display is performed from the target font size storage means 110, and enlarges the magnification by the following formula 3. Is calculated.

上述した（手順１）〜（手順３）により、所定の領域を拡大する倍率を算出する。

The magnification for enlarging the predetermined area is calculated by the above-described (Procedure 1) to (Procedure 3).

  As described above, according to the first modification of the embodiment of the present invention, the magnification for enlarging the predetermined area can be changed based on the display capability of the display unit 21 and the size of the characters displayed on the display unit 21. That is, small characters are enlarged at a high magnification so as to have a target font size, and large characters are enlarged at a low magnification.

  As a result, the size is adjusted to the size of the character that is easy for the user to see and touch without depending on the size of the character before being enlarged and displayed, so that a certain level of operability can always be ensured.

[Second Modification]
In the second modification of the embodiment of the present invention, selection items included in a screen on which a predetermined area is enlarged and displayed are displayed as a list as shown in FIG.

  FIG. 15 is a diagram showing an example of a screen on which a predetermined area is enlarged and displayed in the second modification of the embodiment of the present invention.

  FIG. 15A shows that the vicinity of “hyperlink E” displayed on the screen of the display unit 21 is touched and a predetermined area 905 a is designated.

  FIG. 15B shows a screen in which the predetermined area 905 a is enlarged and displayed on the display unit 21. In the second modification, the selection items (links) included in the enlarged screen 905b of a predetermined area are displayed as a list as shown in FIG. 15B. In the example of FIG. 15B, the list is generated in order from the links closest to the touched designated position. The list of links included in the list may be rearranged in alphabetical order, for example, or may be displayed as it is without being rearranged.

  As described above, according to the second modification of the present invention, it is possible to rearrange and display the selected items that are enlarged and displayed as a list.

  As a result, the user can more easily see the selected item that he / she wishes to touch, and the user can reduce the time and trouble of searching for the selected item that the user wants to touch.

[Other variations]
In the embodiment of the present invention, the touch operation in which the designated position is detected is a single touch on the screen. However, the touch operation in which the designated position is detected is not limited to this. The designated position may be detected when touched or when the touch time (time when the finger is touching the screen) is equal to or longer than a predetermined time.

  In the embodiment of the present invention, the display unit 21 has a hardware configuration included in the image forming apparatus 100 which is an example of the display control device. However, the display unit 21 is not limited to the configuration included in the display control device. The unit 21 and the display control device may be configured as different hardware cases.

  Although the embodiments of the present invention have been described in detail above, the present invention is not limited to such specific embodiments, and various modifications are possible within the scope of the gist of the present invention described in the claims. Can be changed.

21 display unit 23 controller 100 image forming apparatus 101 designated position detecting means 102 selected item detecting means 103 enlarged display means 104 enlarged display determining means 105 enlarged display screen generating means 106 enlarged display releasing means 107 enlarged display determination threshold storage means 108 enlarged display information Storage means 201 Input device 202 Display device

JP 2012-043452 A

Claims (9)

A display control device for controlling a screen displayed on a display unit having a touch panel function for receiving an input by a touch operation,
Designated position detecting means for detecting a position designated by a touch operation on the screen;
A selected item detecting means for detecting a selected item included in a predetermined range centered on the designated position;
A display control apparatus comprising: an enlarged display unit that enlarges and displays a predetermined area centered on the designated position based on the number of the selected items detected by the selected item detection unit. The enlarged display means includes
When the number of the selection items detected by the selection item detecting means is a predetermined number or more, the predetermined area is enlarged and when the number of the selection items is not the predetermined number or more, the predetermined area is displayed. The display control device according to claim 1, wherein the display control device is not enlarged. The enlarged display means includes
The display control apparatus according to claim 1, wherein, among the selection items included in the predetermined area that is enlarged and displayed, the display method of the selection item that is closest to the designated position is changed and displayed. The display control device includes:
A target character size storage means for storing a target character size defining a size of a character included in the predetermined area after the enlarged display;
The enlarged display means includes
4. The magnification when displaying the predetermined area in an enlarged manner is changed based on the display capability of the display unit, the size of the character displayed on the screen, and the target character size. 5. The display control apparatus according to 1. The enlarged display means includes
The display control apparatus according to claim 1, wherein the selection items included in the predetermined area are listed, and the predetermined area is enlarged and displayed.   The display control apparatus according to claim 1, wherein the predetermined area enlarged and displayed by the enlargement display unit is displayed so as to be superimposed on the screen.   The display control apparatus according to claim 1, wherein the selection item is a hyperlink. A display control method for controlling a screen displayed on a display unit having a touch panel function for receiving an input by a touch operation,
A designated position detecting step for detecting a position designated by a touch operation on the screen;
A selection item detection step of detecting a selection item included in a predetermined range centered on the specified position;
A display control method comprising: an enlargement display step of enlarging and displaying a predetermined area centered on the designated position based on the number of the selection items detected by the selection item detection means. A display control program executed in a display control device for controlling a screen displayed on a display unit having a touch panel function for receiving an input by a touch operation,
The display control device;
Designated position detecting means for detecting a position designated by a touch operation on the screen;
A selection item detecting means for detecting a selection item included in a predetermined range centered on the specified position;
A display control program for functioning as an enlarged display means for enlarging and displaying a predetermined area centered on the designated position based on the number of the selected items detected by the selected item detecting means.

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