JP2013142919A - Display control device, information terminal device, integrated circuit, display control method, program, and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the visibility of attentional information after the change of a display layout.SOLUTION: A display control circuit 114 is provided with a display layout changing section 210 for changing a display layout of data to be displayed in accordance with a post-change display setting. When a reference position corresponding to a user operation is determined at the time of a display layout change, the display layout changing section 210 determines either a character or a character string displayed at the reference position as reference information, and changes the display layout such that the reference information is displayed in the reference position even after the display layout has been changed.

Description

  The present invention relates to a display control device, an information terminal device, an integrated circuit, a display control method, a program, and a recording medium that can control display of data on a display device.

  In recent years, book data is generated by converting the contents of a book into electronic data, and the book data is reproduced by an electronic book application so that the book data is displayed on a display such as a personal computer or a mobile phone and read. The use of electronic books is widespread. Accordingly, many electronic book terminals mainly used for electronic books are on the market.

  Reading text data with an electronic device with a display is not limited to electronic books, but is also routinely performed by e-mail, WEB browsing, etc. using a personal computer, a mobile phone, or the like. One advantage of reading characters on the display is that the font size (character size) can be changed.

  Therefore, most electronic book terminals have such a function of changing the font size, which can improve the problem that the characters are small and difficult to see. For this reason, electronic book terminals have come to be used by various users.

  In a general electronic book application, the reproduced book data is displayed in a display window serving as a display area.

  In many cases, the user can read book data in a favorite display style by changing the size of the display window and the font size displayed in the display window.

  The display format of the book data used in such an electronic book is roughly classified into “layout fixed type (also called non-reflow type)” and “reflow type”.

  The “layout fixed type” has a fixed book data display layout (arrangement of displayed information), and the display layout is fixed even when the display window size is changed or the display settings are changed, such as enlargement / reduction. This is a display format in which the relative position of each character in the display window does not change on the display.

  A typical data format that adopts this “fixed layout type” is PDF.

  On the other hand, in the “reflow type”, when the display setting is changed, such as changing the display window size or enlarging / reducing, the relative arrangement of each character in the display window is set so that the characters fit well in the display window. The display format changes on the display.

  For example, when displaying a Web page created by HTML, the arrangement of text data in the display window changes according to the size of the display window or the font size of the text data. is there.

  Patent Document 1 below discloses a technique for determining a layout of each element in a terminal device in accordance with a change in content display magnification.

  Typical examples of the data format adopting the “reflow type” include XML and HTML that are electronic book content formats, and XML and HTML that are displayed and browsed by a WEB browser.

  Here, the display difference between the “layout fixed type” and the “reflow type” will be specifically described with reference to the drawings.

  FIG. 34 shows a display example of book data before the display setting is changed by a conventional electronic book application. In the example shown in FIG. 34, book data for 4 rows and 12 columns is displayed in the display window 20. For example, it is assumed that the font size is increased without changing the window size in the display window 20 from the state in which the book data is displayed in this way.

  FIG. 35 shows a display example of book data after changing the display setting in a conventional electronic book application adopting a fixed layout type. FIG. 36 shows a display example of book data after changing display settings in a conventional electronic book application adopting a reflow type.

  As shown in FIGS. 35 and 36, in both the fixed layout type and the reflow type, book data for two rows and six columns is displayed in the display window 20 in accordance with the change in the font size.

  However, in the fixed layout type, the display layout of the book data is not changed, and the book data is enlarged as a whole, and a part thereof is displayed in the display window.

  For example, in the example shown in FIG. 35, the book data is displayed in a form in which the character string “Shun Nuru” on the first line and the character string “Normal” on the second line are missing. For this reason, the character string “Color is a smell” displayed on the first line in the display window 20 and the character string “My world” displayed on the second line are in accordance with the reading order. It is not continuous. That is, in the fixed layout type, the character string displayed in the display window is not continuous according to the reading order.

  Thus, the fixed layout type has a demerit that the continuity on the display of the text data is not ensured. Also, since multi-directional scrolling operations and page turning operations are necessary, there is a demerit that it takes time to continue reading the book data.

  On the other hand, in the reflow type, a character string of this number of characters is extracted from the book data in accordance with the number of characters that can fit in the display window, and this character string is displayed in an appropriate display layout in the display window. It is configured.

  For this reason, as shown in FIG. 36, “color is smelly odor” is displayed in the first line, and “scattering” is displayed in the second line. , It is continuous according to the reading order.

  Thus, the reflow type has an advantage that continuity in displaying text data is ensured. In addition, since the scrolling operation and the page turning operation need only be performed in one direction, there is also an advantage that the book data can be continuously read with a simple operation.

JP 2010-044628 A (released February 25, 2010)

  The reflow type display format has such merits, but the display layout is changed according to the change of the display setting as described above. For this reason, the user cannot easily grasp where the information he / she focused on before changing the display setting (hereinafter referred to as “attention information”) is displayed after the display layout is changed. .

  For example, attention information that was displayed in the center of the display area before the display setting was changed is displayed at the edge of the display area after being changed or moved out of the display area. Sometimes it becomes.

  As a result, each time the display layout changes, the user needs to search for attention information whose display position has been moved, and as a result, the user may not be able to find attention information. For this reason, the user cannot continue reading book data without feeling uncomfortable or uncomfortable.

  FIG. 37 is an image diagram showing an enlargement operation by a pinch-out operation on a conventional information terminal device and a change in display contents by the conventional information terminal device.

  In the example shown in FIG. 37 (a), the user has two fingers centered on the display position of the character “ra” in the character example “Please come from a friend” displayed on the display with respect to the information terminal device. The zooming operation is performed by a pinch-out operation.

  As a result, in the conventional information terminal device, as shown in FIG. 37 (b), the font size is enlarged and the display layout is changed accordingly. Different characters are displayed. In addition, the character “ra” is removed from the display area and is not displayed in the display area.

  For this reason, in order to continue reading the book data, the user has to perform a scrolling operation in order to search for the character “R”, and felt uncomfortable and uncomfortable.

  As described above, the conventional display method has a problem that can be said to be a factor that deteriorates the usability of the electronic book terminal and the electronic book application.

  The present invention has been made in view of the above problems, and an object of the present invention is to make it possible for a user to easily recognize attention information even after the display layout of text data is changed.

  In order to solve the above-described problem, a display control device according to the present invention includes a reference position determination unit that determines, as a reference position, a position on a display area where text data is displayed, according to a user operation. Display setting changing means for changing the display setting of the text data displayed in the display area; and display layout changing means for changing the display layout of the text data in accordance with the change of the display setting, When the reference position is determined at the time of changing the display layout, the display layout changing unit determines a character or a character string displayed at the reference position as reference information, and the reference layout is changed even after the display layout is changed. The display layout is changed so that information is displayed at the reference position.

  According to the present invention, the character or character string (that is, attention information) displayed at the designated reference position is displayed at this reference position even after the display layout is changed. Thereby, even after the layout is changed, the user can easily recognize the attention information without shifting the line of sight.

  In addition, since the reference position is determined based on the user operation, and the character or character string displayed at the reference position is determined as the reference information, the character or character string more appropriate as the attention information that the user has focused on Can be determined as reference information.

  In the display control apparatus, it is preferable that the display control device further includes a display form changing unit that makes a display form of the reference information different from other data.

  According to this configuration, the character or character string (that is, attention information) displayed at the designated reference position is displayed at the reference position even after the display layout is changed, and the display form is further changed. It will be different from other data. Thereby, even after the layout is changed, the user can more easily recognize the attention information.

  In the display control apparatus, when the user operation for designating one point on the touch panel is performed as the user operation for designating the reference position, the reference position determination unit determines the one point as the reference position. Is preferred.

  According to this configuration, since a certain point is clearly designated as the reference position by the user operation, it is possible to determine a character or a character string more appropriate as the attention information that the user has focused on as the reference information. For the user, the reference position can be designated by a simple operation such as designating only one point. Therefore, according to this configuration, it is possible to improve user operability when the user browses the text data.

  In the display control apparatus, when a user operation for simultaneously specifying two points on the touch panel is performed as a user operation for changing the display setting, the reference position determination unit is configured to include a line segment connecting the two points. It is preferable to determine a point as the reference position.

  According to this configuration, the user can change the display setting and specify the reference position in one action. In other words, the user can not only change the display setting but also specify the reference position by performing a display setting changing operation without being conscious of specifying the reference position. Therefore, according to this configuration, it is possible to improve user operability when the user browses the text data.

  In the display control device, the reference position determination unit may be configured to select the selected character or the character string when a part of the text data or the character string is selected before the display layout is changed. It is preferable to determine the display position as the reference position.

  According to this configuration, since the character or the character string designated by the user operation is substantially the reference information, the character or the character string more appropriate as the attention information that the user has focused on is determined as the reference information. Can do.

  In the display control apparatus, it is preferable that the reference position determination unit determines a center of a display position of the selected character or the character string as the reference position.

  According to this configuration, by setting the reference position as the center position of the character or the character string, it is possible to reduce the fluctuation of the reference position due to a change in font size or the like.

  In the display control apparatus, the display setting change unit may be configured to perform a user operation for changing the display setting when an enlargement or reduction operation is performed by moving the contact position on the touch panel. It is preferable to change the font size of the text data to a font size corresponding to the moving distance between the text data.

  According to this configuration, the user can change the font size of the text data to a desired one by adjusting the font size of the text data by an easy and intuitive operation such as adjusting the amount of movement of the contact position. Therefore, according to this configuration, it is possible to improve user operability when the user browses the text data.

  In the display control apparatus, the display setting change unit displays a plurality of font size candidates in the display area, and sets the font size of the text data to a font size selected by the user from the plurality of candidates. It is preferable to change.

  According to this configuration, the user can change the font size of the text data to a desired one by an easy and intuitive operation such as selecting a favorite font size from the displayed candidates. it can. Therefore, according to this configuration, it is possible to improve user operability when the user browses the text data.

  An information terminal apparatus according to the present invention includes the display control apparatus.

  According to the present invention, it is possible to provide an information terminal device having the same effects as the display control device.

  An integrated circuit according to the present invention includes the display control device.

  According to the present invention, it is possible to provide an integrated circuit having the same effects as the display control device.

  The display control method according to the present invention includes a reference position determination step for determining a position on the display area where text data is displayed as a reference position in accordance with a user operation, and the display control method displays the position in the display area. A display setting changing step for changing the display setting of the text data, and a display layout changing step for changing the display layout of the text data in response to the change of the display setting. In the display layout changing step, If the reference position is determined when the display layout is changed, the character or character string displayed at the reference position is determined as reference information, and the reference information remains at the reference position even after the display layout is changed. The display layout is changed so as to be displayed.

  According to the present invention, when any device executes the display control method, the same effect as the display control device can be obtained.

  The program according to the present invention is a program for causing a computer to function as the display control device, and causes the computer to function as each of the means included in the display control device.

  According to the present invention, when the computer executes the program, the same effects as those of the display control device can be obtained.

  A recording medium according to the present invention is a computer-readable recording medium in which the program is recorded.

  According to the present invention, the recording medium can provide the program that can achieve the same effects as the display control device.

  According to the display control device, the information terminal device, the integrated circuit, the display control method, the program, and the recording medium according to the present invention, a character or a character string (that is, attention information) displayed at the designated reference position is Even after the display layout is changed, the reference position is displayed. Thereby, even after the display layout is changed, the user can easily recognize the attention information without shifting the line of sight.

It is a figure which shows the external appearance of the information terminal device which concerns on embodiment. It is a block diagram which shows the structure of the information terminal device which concerns on embodiment. It is a block diagram which shows the structure of the display control function with which the information terminal device which concerns on embodiment is provided. It is a flowchart which shows the procedure of the display control process by the information terminal device which concerns on embodiment. It is a flowchart which shows the procedure of the layout change process by the information terminal device which concerns on embodiment. It is a figure which shows the relationship between the display area of a display, and a display window. It is a figure which shows the concept of the definition of the size of each cell by a some pixel. The example of a display of the book data by the information terminal device which concerns on embodiment is shown. It is a flowchart which shows the procedure of the expansion process by the information terminal device which concerns on embodiment. The example of a display of book data in the state in which the starting point of pinch out operation was designated is shown. The example of a display of book data in the state where the end point of pinch out operation was specified is shown. The example of a display of book data after a display layout is changed with expansion of a font size is shown. It is a figure which shows an example of a change of the character display information management table used for the layout change process by the information terminal device which concerns on embodiment. It is a figure which shows an example of a change of the character display information management table used for the layout change process by the information terminal device which concerns on embodiment. It is an image figure which shows the expansion operation by pinch out operation with respect to the information terminal device which concerns on embodiment, and the change of the display content by the information terminal device which concerns on embodiment. The example of a display of book data in the state in which the starting point of pinch-in operation was designated is shown. The example of a display of book data in the state in which the end point of pinch-in operation was designated is shown. The example of a display of book data after a display layout is changed with reduction of a font size is shown. It is a figure which shows the specific example of the change of the character display information management table accompanying the reduction process by the information terminal device which concerns on embodiment. It is a figure which shows the specific example of the change of the character display information management table accompanying the reduction process by the information terminal device which concerns on embodiment. The example of a display of book data after the prohibition process was further performed after the display layout change accompanying an expansion process is shown. It is a figure which shows an example about the handling of a new line after a display layout change. It is a figure which shows an example about the handling of a new line after a display layout change. It is a figure which shows an example about the handling of a new line after a display layout change. The modification of the enlargement operation and reduction operation of a font size is shown. The modification of the enlargement operation and reduction operation of a font size is shown. The modification of designation | designated operation of a reference position is shown. The further modification of designation | designated operation of a reference position is shown. The further modification of designation | designated operation of a reference position is shown. The relationship between each word contained in text data and its display position is shown. The further modification of designation | designated operation of a reference position is shown. The modification of the enlargement operation and reduction operation of a font size is shown. The modification of the enlargement operation and reduction operation of a font size is shown. The example of a display of the book data before the change of a display setting by the conventional electronic book application is shown. The example of a display of the book data after the display setting change in the conventional electronic book application which employ | adopted the layout fixed type | mold is shown. The example of a display of the book data after the display setting change in the conventional electronic book application which employ | adopted the reflow type is shown. It is an image figure which shows the expansion operation by pinch out operation with respect to the conventional information terminal device, and the change of the display content by the conventional information terminal device.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment)
(Outline of the information terminal device 100)
First, with reference to FIG. 1, the outline | summary of the information terminal device 100 which concerns on embodiment is demonstrated. FIG. 1 is a diagram illustrating an appearance of an information terminal device 100 according to the embodiment.

  An information terminal device 100 illustrated in FIG. 1 is an information terminal device that can use various applications. In particular, the information terminal device 100 is relatively small and easy to carry and incorporates a battery such as a lithium ion secondary battery. For this reason, the information terminal device 100 can be used outside the home by driving the battery without receiving supply of external power (AC power).

  The information terminal device 100 has an electronic book application installed therein and functions as an electronic book terminal. Thereby, the information terminal device 100 can display book data as display object data on the display 110, and can make this user read this book data. The book data mainly includes text data corresponding to the main text, but may include other data such as image data. The user can perform various operations such as turning pages and changing the font size by using the touch panel 106 and the operation buttons 107 provided in the information terminal device 100.

  The information terminal device 100 further includes a wireless communication module, which enables data communication such as downloading book data by accessing a communication network such as the Internet or a LAN.

  The information terminal device 100 according to the present embodiment employs a reflow type as an electronic book display format. As already described, the reflow type is a display format in which the display layout of display target data is changed in accordance with the change in font size or display window size.

  However, depending on the contents of the book data, it may be preferable to display in a fixed layout type in which the display layout is not changed. Therefore, the information terminal device 100 can display the book data in a fixed layout type according to the file format and settings of the book data.

(Configuration of information terminal device 100)
Next, the configuration of the information terminal device 100 according to the embodiment will be described with reference to FIG. FIG. 2 is a block diagram illustrating a configuration of the information terminal device 100 according to the embodiment.

  As shown in FIG. 2, the information terminal device 100 includes a processing circuit 102, a storage device 104, a touch panel 106, operation buttons 107, a trackball 105, a display driving circuit 108, a display 110, a wireless communication module 112, and a display control circuit 114. It has.

(Storage device 104)
The storage device 104 stores an OS (Operating System) program, various application programs, various control programs, various data, and the like. The data stored in the storage device 104 includes an electronic book application program for causing the information terminal device 100 to function as an electronic book terminal, and book data. The storage device 104 here is not limited to a device built in the information terminal device 100, such as a hard disk drive (HDD) or a solid state drive (SSD), but includes a removable device such as a memory card.

(Processing circuit 102)
The processing circuit 102 includes a processor such as a CPU and a memory such as a ROM and a RAM, and the processor executes programs stored in the memory and the storage device 104 to execute various applications. Control each unit of the information terminal device 100.

(Various input devices)
The trackball 105, the touch panel 106, and the operation buttons 107 are so-called input devices for the user to perform various information input operations and selection operations on the information terminal device 100. The touch panel 106 is provided so as to overlap the surface of the display panel included in the display 110. The operation buttons 107 and the trackball 105 are provided on the surface of the main body of the information terminal device 100. In addition to these, a key, a mouse, or the like may be employed as the input device. These input devices function as designation means for designating a reference position, which will be described later, and selection means for selecting an arbitrary character or character string.

(Display drive circuit 108 and display 110)
The display driving circuit 108 drives the display 110 according to the video signal supplied from the processing circuit 102. As a result, the display 110 displays an image corresponding to the execution result of the program executed by the processing circuit 102. The display 110 functions as display means for displaying book data. Although the information terminal device 100 of this embodiment employs a liquid crystal display as the display 110, an organic EL display or the like may be employed in addition to this.

(Wireless communication module 112)
The wireless communication module 112 controls wireless access to a communication network such as a LAN or the Internet. For example, the information terminal device 100 can perform data communication with a server or another terminal device on the communication network by connecting to the communication network by wireless communication. At that time, access to the communication network is controlled by the wireless communication module 112.

(Display control circuit 114)
The display control circuit 114 controls display of data on the display 110 (display contents, display position, display size, display color, font, etc.).

  For example, when an operation for changing the size of the display window on which the book data is displayed is performed, the display control circuit 114 changes the size of the display window according to the operation, and the display window after the change is displayed. It is displayed on the display 110.

  Further, when an operation for changing the font size of the book data is performed, the display control circuit 114 changes the font size of the book data in accordance with this operation, and the book data having the changed font size is displayed on the display 110. To display.

  When a display setting change that affects the display layout of the book data, such as a change in the size of the display window or a change in the font size, is made, the display control circuit 114 further changes the book according to the change. The data display layout can be changed.

  In particular, the display control circuit 114 according to the present embodiment displays the display layout when the display setting that affects the display layout of the book data is changed in a state where an arbitrary position of the display area of the display 110 is designated as the reference position. The display layout of the book data can be changed so that the character or the character string displayed at the reference position before the change is displayed at the reference position even after the display layout is changed.

  That is, according to the display 110 of the present embodiment, even if the display layout of the book data is changed, the display position of the reference information remains the reference position.

  Thereby, the information terminal device 100 of this embodiment can realize that the user can easily grasp the data that the user has focused on (that is, the attention information) even after the display layout is changed.

  Hereinafter, the display control function of the display control circuit 114 will be specifically described. In the present embodiment, the display control circuit 114 is realized by an integrated circuit (IC), but may be realized by other means.

(Configuration of display control function)
First, with reference to FIG. 3, the structure of the display control function with which the information terminal device 100 is provided is demonstrated. FIG. 3 is a block diagram illustrating a configuration of a display control function included in the information terminal device 100 according to the embodiment.

  As shown in FIG. 3, the display control circuit 114 includes a data display unit 202, a page change unit 204, a display form change unit 206, a display setting change unit 208, a display layout change unit 210, a reference position determination unit 212, and a storage unit. 214.

(Data display unit 202)
The data display unit 202 displays the book data on the display 110. For example, the data display unit 202 acquires book data from the storage device 104. The storage device 104 may store a plurality of book data. The data display unit 202 can display a list of the plurality of book data, allow the user to select arbitrary book data, and acquire the selected book data from the storage device 104.

  Then, the data display unit 202 causes the display 110 to display the acquired book data. Specifically, the data display unit 202 instructs the display driving circuit 108 to display the acquired book data on the display 110. At this time, the data display unit 202 also instructs an initial display layout. As a result, the book data is displayed on the display 110 in the default display layout.

  Since the number of characters that can be displayed on the display 110 is limited to the number corresponding to the size of the display window and the font size, a part (one page) of the acquired book data is generally displayed on the display 110. It becomes.

  As an initial display layout, book data is displayed in a predetermined font size, and a part of the character or character string (for example, the first character of the text, title) is arranged at a predetermined position. The display layout is applied.

(Page change unit 204)
When a page change operation is performed on the book data displayed on the display 110, the page change unit 204 performs a page change process according to the page change operation.

  For example, the page change process includes a process of advancing one page, a process of advancing a plurality of pages, a process of returning one page, a process of returning a plurality of pages, and the like.

  Specifically, when a page change operation is performed, the page change unit 204 extracts new one page of book data from the entire book data in accordance with the page change operation, and displays this on the display 110. The display drive circuit 108 is instructed to do so. As a result, the book data for one new page is displayed on the display 110, and as a result, the page is changed.

(Display mode changing unit 206)
The display form changing unit 206 changes the display form of the character or character string displayed at the designated reference position in the book data displayed on the display 110.

  For example, when an operation for designating an arbitrary position in the display area of the display 110 as a reference position is performed, the display form changing unit 206 displays a character or character string displayed at the reference position as a display form change target. Or a character string (hereinafter referred to as “change target character string”). The change target character string or the like that is the display form change target in this way can be the target of some processing (marking, copying, searching, etc.), for example. There are various units such as a character string to be changed such as a character unit, a word unit, a phrase unit, and a sentence unit.

  Then, the display form changing unit 206 changes the display form of the change target character string or the like. Specifically, the display form changing unit 206 instructs the display driving circuit 108 to change the display form such as the character string to be changed to a display form different from other character strings. As a result, the change target character string or the like is displayed on the display 110 in a display form different from other character strings.

  Examples of a method for changing the display form of the character string to be changed include a method of changing the character color, character thickness, background color, and font, adding an underline, and blinking. The method is not limited to this, and any method may be used as long as at least the character string to be changed can be distinguished from other character strings.

  For example, instead of changing the display form of the change target character string itself, the identification image such as an icon or a graphic is superimposed on the change target character string so that the change target character string etc. can be identified, It may be displayed to point or surround.

  Further, the display form of the character string other than the change target character string or the like may be changed instead of changing the display form of the change target character string or the like itself.

(Display setting change unit 208)
When the display setting change operation is performed on the book data displayed on the display 110, the display setting change unit 208 changes the display setting of the book data displayed on the display 110 according to the display setting change operation. change. Specifically, the display setting changing unit 208 instructs the display driving circuit 108 to display the book data displayed on the display 110 with the changed format setting. As a result, the book data is displayed on the display 110 with the changed display settings.

(Display layout changing unit 210)
If the display setting change by the display setting changing unit 208 affects the display layout of the book data, the display layout changing unit 210 changes the display layout of the book data. Specifically, the display layout changing unit 210 instructs the display drive circuit 108 to display the book data displayed on the display 110 in the changed display layout. As a result, the book data is displayed on the display 110 in the changed display layout.

  In particular, the display layout changing unit 210 changes the display layout before changing the display layout when the display setting affecting the display layout of the book data is changed in a state where an arbitrary position of the display area of the display 110 is designated as the reference position. The display layout of the book data can be changed so that the change target character string or the like displayed at the reference position is displayed at the reference position even after the display layout is changed.

  That is, the change target character string or the like displayed at the reference position becomes information serving as a reference for arrangement of other data. Therefore, in the following description, the change target character string or the like displayed at the reference position is indicated as “reference information”.

  In the present embodiment, the display setting change that affects the display layout of the book data includes enlargement / reduction of the font size of the book data and enlargement / reduction of the size of the display area. The arrangement of the characters included in the book data in the display area (the number of characters that can be arranged and the arrangement position) depends on the font size of the book data and the size of the display area. Therefore, when the font size of the book data or the size of the display area is changed, the arrangement of each character is changed, so that the display layout needs to be changed.

  Some display settings do not affect the display layout, such as simple font changes or character color changes. When such a display setting change is performed, the display layout changing unit 210 may not change the display layout of the book data. Hereinafter, the description will be made on the assumption that the change in the display setting affects the display layout (that is, the change in the size of the display area or the change in the font size).

(Reference position determination unit 212)
When two points on the touch panel 106 are simultaneously designated by a pinch-out operation or a pinch-in operation for enlarging or reducing the font size, the reference position determination unit 212 determines the midpoint of the line segment connecting the two points, Determine as the reference position.

  Thereby, in the information terminal device 100, by performing the display setting changing operation without performing the reference position specifying operation, the reference position can be specified and the display setting can be changed (enlargement or reduction of the font size) by one action. It is possible to do.

(Storage unit 214)
The storage unit 214 stores various conditions and various setting values for each unit of the display control circuit 114 to use for processing.

  For example, the storage unit 214 stores a display form to be applied to a change target character string or the like whose display form is to be changed.

  The storage unit 214 may be realized by a memory included in the display control circuit 114, or may be realized by a storage unit (for example, the storage device 104 shown in FIG. 1) provided outside the display control circuit 114.

(Display control processing procedure)
Next, with reference to FIG. 4, the procedure of the display control process by the information terminal device 100 will be described. FIG. 4 is a flowchart illustrating a procedure of display control processing by the information terminal device 100 according to the embodiment.

(Book data display process)
First, when the data display unit 202 acquires book data to be displayed from the storage device 104 (step S402), the book data acquired in step S402 is displayed on the display 110 under the control of the data display unit 202 (step S404). ). Thereafter, the information terminal device 100 waits for various operations by each input device while displaying the book data. As described below, when the information terminal device 100 detects that an operation has been performed, the information terminal device 100 performs display control processing according to the operation.

(Page change process)
When a page change operation is performed by the user and this page change operation is detected by the page change unit 204 (step S406: Yes), the page change unit 204 performs a page change process according to the detected page change operation. (Step S408). Then, the information terminal device 100 returns the process to step S406. On the other hand, when a page change operation is not detected (step S406: No), the information terminal device 100 advances the process to step S412.

(Display format change processing)
When the reference position specifying operation is performed by the user and the display form changing unit 206 detects this reference position specifying operation (step S412: Yes), the display form changing unit 206 determines the reference specified by the reference position specifying operation. The display form of the reference information displayed at the position is changed (step S414). And the information terminal device 100 advances a process to step S416. On the other hand, when a data change operation is not detected (step S412: No), the information terminal device 100 advances the process to step S416.

(Display setting change processing and layout change processing)
When the display setting change operation is performed by the user and this display setting change operation is detected by the display setting change unit 208 (step S416: Yes), the display setting change unit 208 responds to the detected display setting change operation. Then, the display setting of the book data is changed (step S418). Then, the display layout changing unit 210 performs a layout changing process (specifically described in FIG. 5 and subsequent figures) according to the display setting after the change in step S418 (step S420). Then, the information terminal device 100 returns the process to step S406.

(Specific procedure of layout change processing)
Next, with reference to FIG. 5, the procedure of the layout change process by the information terminal device 100 will be specifically described. FIG. 5 is a flowchart illustrating a procedure of layout change processing by the information terminal device 100 according to the embodiment. That is, FIG. 5 specifically explains the process of step S420 shown in FIG. In particular, a procedure for layout change processing accompanying font size enlargement / reduction processing will be described below. Therefore, the following description is based on the assumption that the reference position and the changed font size have been determined.

(1. Definition of cell matrix)
First, the display layout changing unit 210 defines a cell matrix according to the changed display settings (display area size and font size) (step S502).

  The cell matrix constitutes the display layout and defines the arrangement position of the text data in the display area. For example, as shown in FIG. 8, the cell matrix includes a plurality of cells arranged in a grid of H rows × W columns. Accordingly, a plurality of characters are arranged in a lattice pattern of H rows × W columns in the display area.

  The number of rows and columns of the cell matrix is determined by the font size (character size) and the display area size (vertical and horizontal lengths). Specifically, when the font size and the size of the display area are determined, the number of characters that can be accommodated in the display area is determined for each of the column direction and the row direction of the display area. The number of characters thus determined is the number of rows and columns of the cell matrix.

  Therefore, when either the font size or the display area size is changed, the display layout changing unit 210 changes the definition of the cell matrix each time.

(2. Determine standard information)
Next, the display layout changing unit 210 determines reference information (step S504). As already described, the display layout changing unit 210 determines a change target character string or the like arranged at the designated reference position as reference information. Here, the description will be continued below assuming that the character (one character) arranged at the designated reference position is determined as the reference information.

(3. Determine the location of the reference information)
Next, the display layout changing unit 210 determines the arrangement position (cell) of the reference information on the cell matrix defined in step S502 (step S506). As already described, the reference information is displayed at the reference position even after the display layout is changed.

  In the present embodiment, since each character is displayed in accordance with the cell matrix, the display layout changing unit 210 determines a cell to be a reference information arrangement position in the cell matrix defined in step S502. For example, the display layout changing unit 210 determines a cell that includes the designated reference position (pixel) as a cell that is a reference information placement position.

(4. Determine the location of other information)
Next, the display layout changing unit 210 determines an arrangement position (cell) of information other than the reference information on the cell matrix defined in step S502 (step S508). For example, the display layout changing unit 210 assigns a character subsequent to the reference information, one character per cell, to a cell behind the cell determined as the reference information arrangement position. In addition, a character preceding the reference information is assigned to each cell ahead of the cell determined as the reference information placement position, one character per cell. Thereby, characters are assigned to all cells of the cell matrix.

(5. Create a character display information management table)
Next, the display layout changing unit 210 creates a character display information management table in which character assignment is shown for each cell of the cell matrix defined in step S502 (step S510). The character display information management table shows correspondence between each character in the book data and the arrangement position on the display area of the display 110. For example, the character display information management table is stored in the storage unit 214.

  An example of the character display information management table is shown in FIG. The arrangement positions determined in steps S506 and S508 are managed by this character display information management table.

  In this embodiment, in order to improve work efficiency, such a character display information management table is created. However, it is not always necessary to create this character display information management table.

(6. Display book data)
Then, the display layout changing unit 210 instructs the display driving circuit 108 to display the book data in the changed display layout according to the character display information management table generated in step S510. Thereby, each character of book data is arranged and displayed on the determined arrangement position on display 110 (Step S512). At this time, naturally, the changed display setting (font size) is applied to the display setting of the book data. In particular, the reference information displayed at the designated reference position is again displayed at the reference position.

(Specific example of cell matrix definition method)
Next, a specific example of the cell matrix definition method will be described with reference to FIGS. FIG. 6 is a diagram showing the relationship between the display area of the display 110 (display panel) and the display window. FIG. 7 is a diagram illustrating the concept of defining the size of each cell by a plurality of pixels.

  As already described, when displaying the book data, the information terminal device 100 first defines a cell matrix and assigns each character of the book data to each cell of the cell matrix to determine the arrangement position of each character. In accordance with this determination, the book data is displayed.

  In FIG. 6, a display window 610 is displayed in the display area 600 of the display 110. The display window 610 is a display area defined in software and displayed in the display area 600, and the user can arbitrarily change its size.

  A general application is configured to display book data in the display window 610. Similarly, the electronic book application installed in the information terminal device 100 is configured to display book data in the display window 610. Therefore, in the description of the present embodiment, the display window 610 is a “display area” in which book data is displayed.

  However, in the case of full screen display, the display area of the display panel 600 and the display window 610 may be substantially equal. Further, the book data may be displayed in the display area of the display panel 600 without the concept of a display window. In this case, the display area of the display panel 600 may be substantially a “display area” in which book data is displayed.

  The display area 600 includes m (m is a natural number of 1 or more) pixels (pixels) in the Y-axis direction (horizontal direction in the figure), and n (n in the vertical direction in the figure). Is composed of pixels (pixels) having a natural number of 1 or more. That is, the display area 600 includes a plurality of (m × n) pixels arranged in a matrix of m columns × n rows.

  For example, when a VGA display is adopted as the display 110, the display area 600 includes a plurality of pixels arranged in a matrix of 640 columns × 480 rows.

  On the other hand, the display window 610 includes m ′ pixels (m ′ is a natural number of 1 or more) in the Y-axis direction (horizontal direction in the figure), and in the X-axis direction (vertical direction in the figure). It is configured to include n ′ pixels (n ′ is a natural number of 1 or more). That is, the display window 610 includes a plurality (m ′ × n ′) of pixels arranged in a matrix of m ′ columns × n ′ rows. Of course, m ′ and n ′ change according to the change in the size of the display window 610.

  Here, the pixel at the upper left corner of the display area 600 is the origin O, this pixel (1,1) is A, the pixel at the lower left corner (1, n) is B, the pixel at the lower right corner (m, n) is C, The pixel (m, 1) in the upper right corner is defined as D.

  Further, the upper left corner pixel (x ′, y ′) of the display window 610 is A ′, the lower left corner pixel (x ′ + m′−1, y ′ + n′−1) is B ′, and the lower right corner pixel (x '+ M'-1, y' + n'-1) is defined as C ', and the pixel (m, y') in the upper right corner is defined as D '.

  The above x ′ is a natural number of 1 ≦ x ′ ≦ (x ′ + m ′) ≦ m, and the above y ′ is a natural number of 1 ≦ y ′ ≦ (y ′ + n ′) ≦ n.

  Thus, in the information terminal device 100, the size of the display window 610 can be represented by the number of pixels. Therefore, the information terminal device 100 further represents the size (that is, cell size) necessary for displaying one character in the display window 610 by the number of pixels for each font size, so that the number of characters to be displayed in the display window (that is, the cell size). , The number of cells in the cell matrix) can be easily obtained.

  For example, the display window is composed of m ′ pixels × n ′ pixels, and the size of a cell necessary for displaying one character is Fh pixels × Fw pixels (Fh, Fw are as shown in FIG. 7). And the number of cells in the Y-axis direction (horizontal direction in the figure) (that is, the number of columns) W, and the cell matrix The number of cells (that is, the number of rows) H in the X-axis direction (vertical direction in the drawing) is obtained by the following equations (1) and (2).

  However, H ≦ n ′ / Fh <H + 1, and H is a natural number.

  However, W ≦ m ′ / Fw <W + 1, and W is a natural number.

  Here, ROUNDDOWN is a function, and ROUNDDOWN (a / b) means that in a value obtained by dividing the integer a by the integer b, the remainder is rounded down and rounded to an integer.

  The number L of characters that can be displayed in the display window is obtained by L = H × W.

  In the above description, the number of cells in the cell matrix has been described on the assumption that the cells are configured with no gaps in the cell matrix. The number of cells H and the number of cells W can be calculated by adding pixels of minutes.

  Similarly, the cell matrix and the number L of characters that can be displayed in the display window can be calculated by using the distance between the center points of adjacent cells (based on the pixel size) instead of the cell size. .

(Example of enlargement operation)
Next, an example of an enlargement operation for book data will be described.

  The information terminal device 100 includes a touch panel 106. The user can perform an enlargement operation and a reduction operation on the book data by performing a so-called pinch-in / pinch-out operation on the touch panel 106 with fingers. Specific examples thereof will be described below.

  Note that the touch panel 106 physically overlaps the display 110. Accordingly, in the following description, it is assumed that the coordinates of the touch panel 106 coincide with the coordinates of the pixel unit of the display at each position in the plane direction (xy direction).

  Further, the touch panel 106 can detect simultaneous contact (multi-touch) with a plurality of points by a finger and transmit the coordinates (address) of the pixels of the detected plurality of points to the display control circuit 114. . Thereby, the display control circuit 114 can detect a pinch-in / pinch-out operation.

  FIG. 8 shows a display example of book data by the information terminal device 100 according to the embodiment. FIG. 8 shows a state in which book data is displayed on the display 110. Specifically, a cell matrix of 17 rows and 26 columns is defined according to the character display information management table, and book data is displayed in a state of being arranged in 17 rows and 26 columns according to this cell matrix. Actually, the frame (ruled line) of the cell matrix is not displayed, but in the drawings of FIG. 8 and subsequent figures, this frame may be illustrated for easy understanding of the description (particularly, the display position of each character). Hereinafter, a process from when the book data is displayed as shown in FIG. 8 until the enlargement operation is performed by the pinch-out operation and the display layout of the book data is changed (hereinafter referred to as “enlargement process”). ) Will be described in detail.

  FIG. 9 is a flowchart illustrating a procedure of enlargement processing by the information terminal device 100 according to the embodiment. Hereinafter, each step of the flowchart shown in FIG. 9 will be specifically described.

(Step S902: Specify the start point of the pinch-out operation)
FIG. 10 shows a display example of book data in a state where the start point of the pinch-out operation is specified. First, as shown in FIG. 10, the user specifies the start points (start point 1 and start point 2) of the pinch out for the contact positions of the two fingers by bringing the two fingers into contact with the touch panel 106. Each start point is detected by the touch panel 106, and its address, start point 1 (TX ₁ , TY ₁ ), start point 2 (TX ₂ , TY ₂ ) is specified.

(Step S904: Specify the center point of two start points)
The reference position determination unit 212 of the display control circuit 114 uses the coordinates of the coordinates corresponding to the midpoint of the line segment connecting the start point 1 (TX ₁ , TY ₁ ) and the start point 2 (TX ₂ , TY ₂ ) as the center point (X _c , Y _c ), and the character displayed at the center point (X _c , Y _c ) is determined as reference information. That is, in this example, one character in the book data is determined as reference information.

For example, the reference position determination unit 212 obtains the average value of the coordinates of the two start points according to the following formulas (3) and (4), and calculates the average value as the center point (X _c , Y _c ).

In this example, the address of each start point is shown in pixel units, and the center point (X _c , Y _c ) is determined using the address of each start point. However, the address of each start point is determined in cell address units. In addition, the center point (X _c , Y _c ) may be determined using the addresses of these start points.

(Step S906: Automatic determination of reference position and reference information)
After calculating the center point (X _c , Y _c ), the reference position determination unit 212 determines the center point (X _c , Y _c ) as the reference position. In addition, the reference position determination unit 212 specifies the character displayed at the center point (X _c , Y _c ) by referring to the character display information management table, and determines the specified character as reference information. .

For example, if the coordinates of the pixel at the center of each cell are (X _i , Y _i ), the reference position determination unit 212 has the coordinates (X _i , Y _i ) closest to the center point (X _c , Y _c ). The character displayed in the cell can be specified as the reference information.

For example, the distance l between the address (X _i , Y _i ) and the center point (X _c , Y _c ) can be expressed by the following equation (5).

In the example shown in FIG. 10, the center point (X _c , Y _c ) overlaps the cell having the cell address (9, 14). Therefore, it can be said that the cell having the cell address (9, 14) is the cell closest to the center point (X _c , Y _c ). Therefore, the reference position determination unit 212 determines the character “ra” (unique address = “213”) displayed in the cell having the cell address (9, 14) as reference information.

  The method for selecting the character closest to the reference point is not limited to the above formula (5).

  In this example, the reference position determination unit 212 automatically determines the reference position. However, the user may designate the reference position by operating the input device before performing the enlargement operation. . In this case, the automatic determination process may be omitted, or the reference position may be determined again by the automatic determination process.

(Step S908: Change of display form)
The display form changing unit 206 changes the display form of the character determined as the reference information. In the example shown in FIG. 10, as an example of changing the display form, the reference information is underlined and the character color is changed to a preset color.

(Step S910: Specify the end point of the pinch out operation)
FIG. 11 shows a display example of book data in a state where the end point of the pinch-out operation is designated. As shown in FIG. 11, the user widens the interval between two fingers from the state shown in FIG. 10 (a state where two fingers are in contact with the touch panel 106), and determines the contact position of the two fingers thereafter. Designate as the end points (end point 1 and end point 2) of the pinch out. Each end point is detected by the touch panel 106, and its address, end point 1 (TX ₃ , TY ₃ ) and end point 2 (TX ₄ , TY ₄ ) are specified.

(Step S912: Determination of enlargement ratio)
The display layout changing unit 210 expands based on two start points (TX ₁ , TY ₁ ), (TX ₂ , TY ₂ ), two end points (TX ₃ , TY ₃ ), and (TX ₄ , TY ₄ ). Find the rate.

  For example, when the distance between the two start points is D1 and the distance between the two end points is D2, the display layout changing unit 210 can obtain the enlargement rate S by the enlargement operation by the following equation (6).

  If S> 1, enlargement is performed, if S = 1, equal magnification, and if S <1, reduction is performed. When S = 1 and the magnification is equal, the enlargement process described below need not be performed.

(Step S914: Change font size)
The display layout changing unit 210 changes the font size based on the obtained enlargement ratio S. For example, assuming that the font size before enlargement is f, the font size after enlargement is F, and the font size can be changed continuously, the display layout changing unit 210 sets the font size F after enlargement to the following formula: (7).

  In Equation 7, k is an arbitrary positive constant.

  When the font size F obtained by the above equation (7) does not exist, the display layout changing unit 210 uses the font size closest to the obtained font size F among the existing font sizes for subsequent processing. The font size is F.

(Step S916: Redefinition of cell matrix)
As the font size increases, the cell size of the cell matrix naturally increases, so the display layout changing unit 210 redefines the cell matrix and calculates the number of characters that can be displayed.

  The number of rows H of the cell matrix is obtained by the mathematical formula (1) already described. Further, the number of columns W of the cell matrix can be obtained by the mathematical formula (2) already described. The number of characters that can be displayed is obtained by multiplying the number of rows H by the number of columns W.

  That is, the number L of characters that can be displayed can be obtained by the following formula (8).

  In Equation 8 above, ● represents multiplication. W, H, and F are all integers.

  In the example shown in FIG. 12, as an example of the redefined cell matrix, the cell matrix is changed from 17 rows and 26 columns to 8 rows and 13 columns as the font size increases.

(Step S918: Determination of Arrangement Position of Reference Information)
The display layout changing unit 210 determines the arrangement position of the reference information in the redefined cell matrix. As already described, in the information terminal device 100, it is determined that the reference information is arranged at the reference position as the reference information arrangement rule. The display layout changing unit 210 determines the reference position determined in step S906 as the reference information layout position determined in step S906 according to the layout rule.

Here, the selected reference position (that is, the center point (X _c , Y _c )) may not be the center of the cell of the redefined cell matrix.

In this case, for example, if the coordinates of the pixel at the center of each cell in the redefined cell matrix are (X _i , Y _i ), the reference position determination unit 212 has the coordinates (X _i , Y _i ) as the center. A cell close to the point (X _c , Y _c ) is determined as a cell serving as a reference position (hereinafter referred to as “reference cell”).

  Then, the reference position determining unit 212 determines this reference cell as the reference information arrangement position determined in step S906.

  For example, in the example shown in FIG. 12, the selected reference position is not the same position as the center pixel of the cell having the cell address (5, 7), but within the cell region having the cell address (5, 7). Is included. Therefore, it can be said that the cell having the cell address (5, 7) is the cell whose center pixel is closest to the selected reference position. Therefore, the reference position determination unit 212 determines the cell having the cell address (5, 7) as the reference information arrangement position.

(Step S920: Regeneration of character display information management table)
The display layout changing unit 210 regenerates the character display information management table.

  For example, the display layout changing unit 210 first sets the character “5” determined as the reference information to the cell address (5, 7) of the arrangement position of the reference information determined as described above in the redefined cell matrix. ”(Unique address =“ 213 ”).

  Then, consecutive characters before and after the reference information are sequentially assigned to the other cell addresses, one character per cell until the 8 × 13 cell matrix is filled.

  Specifically, in the cell group ahead of the cell address (5, 7), the characters following the reference information are sequentially assigned, one character per cell, from the cell address (5, 7). In the rear cell group, characters following the reference information are sequentially assigned one character per cell.

  At this time, the order of the cells to which the characters are assigned may be any order, for example, the characters may be assigned sequentially from the cell closest to the address (5, 7), and the first character is displayed. Characters may be sequentially assigned in order from the cell (for example, the upper left corner cell for horizontal writing, and the upper right corner cell for vertical writing).

  Thereby, for example, as shown in FIG. 13, the character display information management table in which characters are assigned to each cell of the cell matrix of 17 rows and 26 columns is shown in FIG. A character is assigned to each cell of the cell matrix of the column.

  Note that if you do not consider prohibition processing such as not putting a punctuation mark “.” At the beginning, the number of columns and rows of the cell matrix and the location of the reference information are not required without using the character display information management table. If the address (in the above example, the cell address (5, 7)) and the reference information (one character) arranged at the reference position are determined, which character of the book data is for each cell constituting the cell matrix. It is easily determined whether it is arranged.

  For example, when assigning characters to each cell in the cell matrix, the cell in which the first character is displayed as the order (for example, the cell in the upper left corner for horizontal writing, the cell in the upper right corner for vertical writing) Assume that a method of sequentially assigning characters in order is adopted. For this reason, it is necessary to specify which character is displayed in the cell in which the first character is displayed.

Here, the cell in which the first character is displayed is N cells before the cell in which the reference information is arranged, the coordinates of the cell in which the reference information is arranged are (x _s , y _s ), and the origin O (display When the coordinates of the pixel in the upper left corner of the region are (X ₀ , Y ₀ ), N can be obtained by the following formula (9) in the case of vertical writing, and in the case of horizontal writing, the following formula (10 ).

  In the above formula (9), for example, it is assumed that solutions are obtained as in the following formulas (11) to (13).

  In this case, N obtained by the above equation (9) is “51”. Thereby, it can be seen that the cell in which the first character is displayed is the cell 51 cells before the cell in which the reference information is arranged. As will be described later, each character is assigned a unique ID of a serial number. In this case, a character assigned with a unique ID 51 that is less than the unique ID assigned to the reference information is the first character. It can be seen that the characters are displayed in the displayed cell.

  In the above formulas (9) and (10), N is obtained using the font size F (that is, the width of the character display area). Instead, the distance between the centers of the character display positions is used. However, N can be obtained similarly.

  For example, when the distance in the vertical direction is DH and the distance in the horizontal direction is DW, N can be obtained by the following formula (14) in the case of vertical writing, and in the case of horizontal writing, the following formula ( 15).

(Step S922: Redisplay of book data)
FIG. 12 shows a display example of book data after the display layout is changed in accordance with the enlargement of the font size.

  In accordance with the character display information management table, the display layout changing unit 210 instructs the display driving circuit 108 to display the book data in the changed display layout (in a state where each character is arranged at the position of the corresponding cell). Instruct. As a result, the book data is displayed on the display 110 in the display layout after the change.

  In the example shown in FIG. 12, the display layout of the book data displayed on the display 110 according to the cell matrix of 8 rows and 13 columns redefined by increasing the font size is 17 rows and 26 columns. To 8 rows and 13 columns. The arrangement of each character is in accordance with the regenerated character display information management table (see FIG. 14).

  As is clear from FIG. 12, the characters “R” displayed at the reference position before the display layout is changed are displayed at the reference position even after the display layout is changed. That is, the display layout after the change is a display layout as if the whole is enlarged while the position of the character “ra” is fixed. Thereby, even after the display layout is changed, the user can continue to read the book data from the focused character “R” without feeling uncomfortable.

(Specific example of character display information management table)
Next, a specific example of a character display information management table used for layout change processing by the information terminal device 100 will be described with reference to FIGS. 13 and 14. 13 and 14 are diagrams illustrating an example of a character display information management table used for layout change processing by the information terminal device 100 according to the embodiment.

  The character display information management table shown in FIG. 13 is the character display information management table when the characters of the book data are displayed in a state of being arranged in 17 rows × 26 columns as shown in FIG. Indicates the state.

  On the other hand, in the character display information management table shown in FIG. 14, as shown in FIG. 12, the book data shown in FIG. 8 is newly arranged in 8 rows × 13 columns as the font size increases. The state of the character display information management table when displayed is shown.

  As shown in FIGS. 13 and 14, a unique ID (unique address) is assigned to each character (text code) of the book data. A unique ID is also assigned to a blank (indicated by “□” in the figure), and a unique ID is also assigned to a control character such as a line feed.

  As the text code, a character code corresponding to a character set is used. Examples of the character set include ISO-2022-JP, EUC-JP, Shift_JIS, UTF-8, and UTF-16, and any of them may be used.

  As the unique address, a serial number from the first character is used, but any address may be used as long as the display order of the characters can be specified at least.

  A cell address (cell address) is assigned to each character to which a cell is assigned. In this example, the cell address is shown in the (x, y) format, where x indicates a row number and y indicates a column number. In particular, the top row is defined as the first row, and the leftmost column is defined as the first column. For example, as shown in FIG. 8, the cell address at the upper left corner to which the character “ni” is assigned is (1, 1) in the character display information management table shown in FIG.

  As can be seen by comparing FIG. 13 and FIG. 14, among the characters displayed before the display layout is changed, each of the characters to be displayed after the change of the display layout has a cell address of a new cell matrix. Is assigned.

  In particular, the character “ra” to which the cell address (9, 14) corresponding to the reference position is assigned before the display layout is changed is the cell address of the cell corresponding to the reference position even after the display layout is changed. (5, 7) is assigned.

  Note that a cell address is not assigned to each character that is not to be displayed after the display layout is changed. For this reason, in the example shown in FIG. 14, “***” is set in the cell address column. ing.

  As described above, as the display layout is changed as the font size increases, the character display information management table changes every moment.

  In the above example, the character display information management table indicates the display position of each character by the cell address. However, the present invention is not limited to this. For example, the center coordinates of the display position of each character (substantially, the cell The display position of each character may be shown in the coordinate system of the display 110, such as the same as the center coordinate).

  FIG. 15 is an image diagram illustrating an enlargement operation by a pinch-out operation on the information terminal device 100 according to the embodiment and a change in display content by the information terminal device 100 according to the embodiment.

  In the example shown in FIG. 15A, the user selects 2 characters from the information terminal device 100 centered on the display position of the character “ra” in the character example “Come from a friend” displayed on the display 110. Enlargement is performed by pinching out with one finger.

  Thus, in the information terminal device 100, the display position of the character “ra” is automatically determined as the reference position, and the character “ra” displayed at the reference position is determined as the reference information. Further, in the information terminal device 100, the enlargement rate by the enlargement operation is determined according to the amount of change in the interval between two fingers accompanying the enlargement operation.

  As a result, in the information terminal device 100, as shown in FIG. 15B, the font size is enlarged according to the determined enlargement rate, and the display layout is changed accordingly. The display position remains at the reference position.

  Thus, the user can continue to read the book data from the focused character “R” without feeling uncomfortable even after performing the enlargement operation.

  As described above, when the information terminal device 100 according to the present embodiment changes the display layout of the text data as the font size increases, the reference information is displayed at the reference position even after the display layout is changed. The display layout was changed. Thereby, the reference information is displayed at the reference position even after the display layout is changed. For this reason, even after the display layout is changed, the user can easily recognize the reference information without shifting the line of sight.

(Example of reduction operation)
Next, an example of a reduction operation for book data will be described.

  The reduction process is performed in the same procedure as the enlargement process shown in FIG. In the case of the reduction process, the processing content of each step of the flowchart shown in FIG. 9 is as follows.

(Step S902: Specify the start point of the pinch-in operation)
FIG. 16 shows a display example of book data in a state where the start point of the pinch-in operation is designated. First, as shown in FIG. 16, the user designates the pinch-in start points (start point 1 and start point 2) as the contact positions of the two fingers by touching the touch panel 106 with two fingers. Each start point is detected by the touch panel 106, and the start point 1 (TX ₁ , TY ₁ ) and the start point 2 (TX ₂ , TY ₂ ) are specified as addresses.

(Steps S904 to S908)
Step S904 (identifies the center point of the two start points), step S906 (automatic determination of the reference position and reference information), and step S908 (change of the display form) are the same as the enlargement process, and thus the description thereof is omitted.

(Step S910: Specify the end point of the pinch-in operation)
FIG. 17 shows a display example of book data in a state where the end point of the pinch-in operation is designated. As shown in FIG. 17, the user narrows the interval between two fingers from the state of FIG. 16 (a state where two fingers are in contact with the touch panel 106), and then determines the contact position of the two fingers. Designated as the pinch-in end points (end point 1 and end point 2). Each end point is detected by the touch panel 106, and its address, end point 1 (TX ₃ , TY ₃ ) and end point 2 (TX ₄ , TY ₄ ) are specified.

(Step S912 to Step S920)
Step S912 (determination of enlargement ratio), step S914 (change of font size), step S916 (redefinition of cell matrix, step S918 (determination of arrangement position of reference information), and step S920 (regeneration of character display information management table) ) Is the same as the enlargement process, and the description thereof is omitted.

(Step S922: Redisplay of book data)
FIG. 18 shows a display example of book data after the display layout is changed in accordance with the font size reduction.

  In accordance with the character display information management table, the display layout changing unit 210 instructs the display driving circuit 108 to display the book data in the changed display layout (in a state where each character is arranged at the position of the corresponding cell). Instruct. As a result, the book data is displayed on the display 110 in the display layout after the change.

  In the example shown in FIG. 18, the book data displayed on the display 110 has a display layout of 8 rows and 13 columns in accordance with the cell matrix of 17 rows and 26 columns redefined by reducing the font size. To 17 rows and 26 columns. The arrangement of each character is in accordance with the regenerated character display information management table (see FIG. 20).

  As is clear from FIG. 18, the characters “R” displayed at the reference position before the display layout is changed are displayed at the reference position even after the display layout is changed. That is, the display layout after the change is a display layout as if the whole is reduced while the position of the character “ra” is fixed. Thereby, even after the display layout is changed, the user can continue to read the book data from the focused character “R” without feeling uncomfortable.

(Specific example of changes in the character display information management table)
Next, with reference to FIG. 19 and FIG. 20, a specific example of a change in the character display information management table accompanying the reduction process by the information terminal device 100 will be described. 19 and 20 are diagrams illustrating specific examples of changes in the character display information management table accompanying the reduction process by the information terminal device 100 according to the embodiment.

  The character display information management table shown in FIG. 19 is the character display information management table when the characters of the book data are displayed in an array of 8 rows × 13 columns, as shown in FIG. Indicates the state.

  On the other hand, in the character display information management table shown in FIG. 20, as shown in FIG. 18, the book data shown in FIG. 16 is newly arranged in 17 rows × 26 columns as the font size is reduced. The state of the character display information management table when displayed is shown.

  As can be seen from a comparison between FIG. 19 and FIG. 20, each of the characters to be displayed after the change of the display layout, including the characters displayed before the change of the display layout, includes a cell address of a new cell matrix. Is assigned.

  In particular, the character “R”, which has been assigned the cell address (5, 7) corresponding to the reference position before the change of the display layout, has the cell address (9) corresponding to the reference position even after the change of the display layout. , 14).

  As described above, as the display layout is changed as the font size is reduced, the character display information management table changes every moment.

  Thus, when the information terminal device 100 according to the present embodiment changes the display layout of the text data as the font size is reduced, the reference information is displayed at the reference position even after the display layout is changed. The display layout was changed. Thereby, the reference information is displayed at the reference position even after the display layout is changed. For this reason, even after the display layout is changed, the user can easily recognize the reference information without shifting the line of sight.

(Modification)
Hereinafter, modifications of the present embodiment will be described.

(Modification 1)
As described in the embodiment, the character display information management table sequentially assigns characters to each cell of the cell matrix in accordance with the rule of 1 cell = 1 character with reference to the reference information and the reference position. Even automatic display position adjustment processing used in typical document software is not taken into consideration.

Therefore, in the information terminal device 100 of the embodiment, the display position adjustment processing as described in (1) to (3) below may be performed to adjust the display position of each character. In this case, the display position may be adjusted by changing the display position set in the character display information management table, and characters are actually displayed without changing the display position set in the character display information management table. When doing so, the display position may be adjusted.
(1) Line feed accompanying a line feed symbol.
(2) In consideration of small characters such as punctuation marks “.”, “Nya”, “yu”, “yo”, and other characters and the size of other characters, Adjustment by the size of the character represented by adjustment such as filling.
(3) Prohibited matters that punctuation marks ("," and "."), Closing brackets (for example, ")", """), etc. must not be at the beginning or end of a line, or avoid it For this reason, prohibition processing typified by adjusting the length of characters and stuffing.

  When the display position adjustment process is performed, the reference information may be arranged in a cell slightly shifted from the initially set reference position. However, such a shift is the reference position of the present invention. It shall be allowed within the range.

  FIG. 21 shows a display example of book data after the display layout is changed due to the enlargement process and after the prohibition process is further performed. For example, in the character display information management table, when characters are arranged in each cell simply according to the rule of 1 cell = 1 character, in the example shown in FIG. The reading is “.”.

  In this case, the display layout changing unit 210 performs a prohibition process, and, as shown in FIG. 21, the reading mark “.” Is added to the tenth column along with the character “ta” placed in the last cell of the tenth column. You may arrange in the last cell of.

  In this case, as shown in FIG. 21, each character of the character string following the punctuation mark “.” Is moved up one cell at a time, and the cell address after the carry in the character display information management table. Are assigned and displayed accordingly.

  At this time, the reference information “R” is also moved up by one from the cell address (5, 7) set as the reference position and rearranged at the cell address (4, 7). That is, the display position of the reference information “ra” is deviated from the reference position, but such a slight deviation should be regarded as within the allowable range.

  However, if it is not desired to cause this slight deviation, the reference information “ra” is arranged at the cell address (5, 7), for example, by adjusting the character spacing of the character string before the reference information “ra”. You may make it remain. For example, the number of characters in the ninth column is set to seven characters, and preferably the character spacing in the ninth column is further expanded, so that it is not necessary to carry out the first column to the eighth column. Can be left at cell address (5, 7).

  In the case of the reduction process, like the enlargement process, a prohibition process or the like may be performed, and the assignment of text data to the cells of the character display information management table may be changed as necessary.

  22 to 24 are diagrams illustrating an example of handling line breaks after changing the display layout. 22 to 24 show display examples of book data after the display layout is changed due to the enlargement of the font size. For the text data before the change of the display layout, the character string “I don't care”. And a line feed character between the character string “□ I am with my teacher”.

  In the example shown in FIG. 22, the line feed character is deleted. As a result, there is no line break between the character string “I don't want to use it” and the character string “□ I am with my teacher”.

  On the other hand, in the example shown in FIGS. 23 and 24, the line feed character is left as it is. As a result, a line break exists between the character string “I don't want to use it” and the character string “□ I am with my teacher”. 23 and 24, since the position of the reference information “to” is fixed to the reference position (display position in the figure), the tenth column includes three characters “□ I” (a space indicated by “□”). ) Only. The display form of the three characters in the tenth column may be any form. For example, in the example shown in FIG. 23, the three characters are displayed with the top aligned, and in the example shown in FIG. “□ I” and “GA” are displayed with both ends aligned. In addition to this, lower end alignment, uniform alignment, and the like can be employed.

  As in this example, it is only necessary that the reference information is displayed at the reference position even after the display layout is changed, and the handling of line breaks and the accompanying adjustment of the display position may be anything.

(Modification 2)
25 and 26 show modified examples of the font size enlargement operation and the reduction operation. In the embodiment, the example in which the font size enlargement operation and the reduction operation are performed by performing the pinch-in / pinch-out operation using the touch panel 106 has been described. However, the present invention is not limited to this, and various methods may be employed as the font size enlargement operation and the reduction operation.

  For example, as shown in FIG. 25, an operation for enlarging the book data by an operation of the slide bar 30 displayed on the display 110 or a font size selection operation from the dialog 31 displayed on the display as shown in FIG. It can also be configured to perform a reduction operation. In addition to this, various methods such as a tap operation using the touch panel 106, a click operation using the mouse, and a numerical value input operation indicating the enlargement / reduction ratio can be adopted as the operation for enlarging and reducing the font size.

  In the above example, the slide bar 30 and the dialog 31 are each illustrated alone, but may be displayed over the text data or displayed side by side.

(Modification 3)
(Modification of reference position designation operation)
FIG. 27 shows a modification of the reference position designation operation. In the embodiment, the example in which the reference position is designated by performing a pinch-in / pinch-out operation using the touch panel 106 has been described. However, the present invention is not limited to this, and various methods may be employed as the reference position designation operation.

  For example, as shown in FIG. 27, by touching an arbitrary position on the touch panel 106 with the stylus pen 32 or a finger, this contact position can be designated as the reference position.

  In this case, since the enlargement operation and the reduction operation are not performed at the same time, the enlargement operation and the reduction operation may be separately performed using the slide bar 30 shown in FIG. 25, the dialog 31 shown in FIG.

  In addition to this, various methods such as a tap operation using the touch panel 106 and a click operation using a mouse can be employed as the reference position specifying operation.

(Modification 4)
(Further modification of the reference position designation operation)
28 and 29 show a further modification of the reference position specifying operation.

  In FIG. 28A, an arbitrary character is selected by the user from the text data (Chinese horizontal writing) displayed on the display 110, and accordingly, the display position of this character is displayed by the reference position determination unit 212. Is automatically determined as the reference position.

  Thereby, in the information terminal device 100, the character displayed at the reference position is determined as the reference information. Further, in the information terminal device 100, the font size is enlarged. As a result, in the information terminal device 100, the font size is enlarged as shown in FIG. Although the display form of the character has been changed to underlined display, the display position of the character remains at the reference position.

  Similarly, in FIG. 29A, an arbitrary character “R” in text data (Japanese vertical writing) displayed on the display 110 is selected by the user, and thereby the reference position determination unit 212. Thus, the center of the display position of the character “RA” is automatically determined as the reference position.

  Thereby, in the information terminal device 100, the character “ra” displayed at the reference position is determined as the reference information. Further, in the information terminal device 100, the font size is enlarged. As a result, in the information terminal device 100, the font size is enlarged as shown in FIG. In addition, the display form of the character is changed to a white display, and the display position of the character “RA” is moved to the upper right corner (display position of the first character).

  As in this modification, the user may select an arbitrary character, and the display position of the selected character may be determined as the reference position. In this case, a predetermined position (coordinates) of the character display positions may be determined as the reference position. For example, as in the above modification, the center (center coordinate) of the character display positions may be determined as the reference position.

  Then, after changing the display layout, the character displayed at the reference position may be displayed at this reference position as in the example shown in FIG. 28B, as in the example shown in FIG. Alternatively, it may be displayed at the display position of the first character.

  Note that the display position of each character may be obtained in advance and set in the character display information management table, or may be obtained after a character is selected.

  Also according to this modification, the user can continue reading the book data from the focused character without feeling uncomfortable after performing the enlargement operation.

(Modification 5)
(Further modification of the reference position designation operation)
FIG. 30 shows the relationship between each word included in the text data and its display position. FIG. 31 shows a further modification of the reference position designation operation.

  In FIG. 30, “●” displayed overlapping each word indicates the center of the display position. In particular, FIG. 30 shows that the center of the display position is obtained for each word. This center can be represented by coordinates (x, y). For example, the center of the display position of each word is obtained in advance and managed by a character display information management table.

  On the other hand, in FIG. 31A, an arbitrary word “Rabbit” in the text data (English horizontal writing) displayed on the display 110 is selected by the user. The center of the display position of this word is automatically determined as the reference position. The center of the display position of the word “Rabbit” is obtained in advance as shown in FIG.

  Thereby, in the information terminal device 100, the word “Rabbit” displayed at the reference position is determined as the reference information. Furthermore, in the information terminal device 100, an operation for enlarging the font size is performed. As a result, in the information terminal device 100, the font size is increased as shown in FIG. Further, the display form of the word “Rabbit” is changed to a white display, and the display position of the word “Rabbit” is moved to the upper left corner (display position of the first character).

  As in this modification, the user may select an arbitrary character string, and the display position of the selected character string may be determined as the reference position. In this case, a predetermined position (coordinates) in the display position of the character string may be determined as the reference position. For example, as in the above modification, the center (center coordinate) of the display position of the character string may be determined as the reference position.

  Then, the character string displayed at the reference position may be displayed at the reference position after changing the display layout, or displayed at the display position of the first character as in the example shown in FIG. Also good.

  The display position of each character string may be obtained in advance and set in the character display information management table, or may be obtained after a character string is selected.

  Also according to this modification, the user can continue to read the book data from the focused character string “Rabbit” without feeling uncomfortable after performing the enlargement operation.

(Modification 6)
(Further modification of enlargement operation and reduction operation)
Hereinafter, further modifications of the font size enlarging operation and the reducing operation will be described. 32 and 33 show modifications of the font size enlargement operation and the reduction operation. In this example, a so-called double tap operation in which the touch panel is tapped twice with a finger, a stylus pen, or the like is used as the font size enlargement operation and reduction operation.

  For example, in FIG. 32A, an arbitrary character “thing” in the text data (Japanese horizontal writing) displayed on the display 110 is selected by the user. The center of the display position of this character “thing” (position indicated by a triangle in the figure) is automatically determined as the reference position.

  Thereby, in the information terminal device 100, the character “thing” displayed at the reference position is determined as the reference information. Furthermore, in the information terminal device 100, an operation for enlarging the font size by a double tap operation is performed. As a result, in the information terminal device 100, the font size is increased as shown in FIG. Accordingly, the display layout is changed, and the character color of the character “thing” is changed. However, the display position of the character “thing” is still the reference position.

  In this example, the font size is enlarged by the double tap operation because the enlargement / reduction mode of the information terminal device 100 is switched to the “enlargement mode”.

  In addition, if a double tap operation is further performed from the state shown in 32 (b), the information terminal device 100 performs further enlargement processing. Thus, the information terminal device 100 gradually increases the font size each time a double tap operation is performed. When the font size is the maximum, the font size may return to the minimum when a double tap operation is further performed. As a result, the information terminal device 100 can repeatedly perform the enlargement process by the double tap operation.

  On the other hand, in FIG. 33A, an arbitrary character “Den” in the text data (Japanese horizontal writing) displayed on the display 110 is selected by the user. The center of the display position of this character “Den” (position indicated by a triangle in the figure) is automatically determined as the reference position.

  Thus, in the information terminal device 100, the character “mother” displayed at the reference position is determined as the reference information. Furthermore, in the information terminal device 100, a font size reduction operation is performed by a double tap operation. As a result, in the information terminal device 100, the font size is reduced as shown in FIG. Accordingly, the display layout is changed, and the character color of the character “Den” is changed. However, the display position of the character “Den” is still the reference position.

  In this example, the font size is reduced by the double tap operation because the enlargement / reduction mode of the information terminal device 100 is switched to the “reduction mode”.

In addition, if a double tap operation is further performed from the state shown in 33 (b), the information terminal device 100 performs further reduction processing. Thus, the information terminal device 100 gradually reduces the font size each time a double tap operation is performed. When the font size is minimum, the font size may return to the maximum when a double tap operation is further performed. As a result, the information terminal device 100 can repeatedly perform the reduction process by the double tap operation.
(Program, storage medium, integrated circuit)
Each function of the information terminal device 100 described in the embodiment may be realized by hardware by a logic circuit formed on an integrated circuit (IC chip), or by software using a CPU (Central Processing Unit). It may be realized.

  For example, the information terminal device 100 includes a CPU that executes instructions of a program that realizes each function, a ROM (Read Only Memory) that stores the program, a RAM (Random Access Memory) that expands the program, the program, and various data. Are provided with various storage devices (recording media) such as a memory. Each function of the information terminal device 100 can be realized by the CPU reading the programs stored in the various storage devices and executing the programs.

  Examples of the recording medium include tapes such as magnetic tapes and cassette tapes, magnetic disks such as floppy (registered trademark) disks / hard disks, and disks including optical disks such as CD-ROM / MO / MD / DVD / CD-R. IC cards (including memory cards) / optical cards, semiconductor memories such as mask ROM / EPROM / EEPROM / flash ROM, PLD (Programmable logic device), FPGA (Field Programmable Gate Array), etc. Logic circuits or the like can be used.

  The program may be supplied to the information terminal device 100 via a communication network. The communication network only needs to be able to transmit at least the program to the information terminal device 100, and any type of communication network may be used. For example, the Internet, intranet, extranet, LAN, ISDN, VAN, CATV communication network, virtual private network, telephone line network, mobile communication network, satellite communication network, etc. can be used as the communication network. is there.

  Further, any kind of transmission medium for supplying the program to the information terminal apparatus 100 may be used. For example, a wired medium such as IEEE1394, USB, power line carrier, cable TV line, telephone line, ADSL (Asymmetric Digital Subscriber Line) line may be used as the transmission medium. As transmission media, infrared rays such as IrDA and remote control, Bluetooth (registered trademark), IEEE80211 wireless, HDR (High Data Rate), NFC (Near Field Communication), DLNA, cellular phone network, satellite line, terrestrial digital network You may use the thing by radio | wireless.

(Supplementary explanation)
The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope shown in the claims, and the embodiments can be obtained by appropriately combining technical means disclosed in different embodiments. The form is also included in the technical scope of the present invention.

(Application object of the present invention)
In the embodiment, an example in which the present invention is applied to an apparatus having an input device and a display has been described. However, the present invention is an apparatus in which a display is separate or an apparatus in which an input device is separate. Can also be applied.

  In the embodiment, an example in which the present invention is applied to an information terminal device has been described. However, the present invention can be applied to other devices as long as the device can control at least the display of text data on a display. Can be applied. For example, the present invention can be applied to a personal computer, a mobile phone, a smartphone, an electronic book terminal, a PDA, a television receiver, a car navigation device, and the like.

  In the embodiment, the book data is used as an example of the text data. However, the present invention is not limited to this, and the present invention can be applied to any data as long as it includes at least text data such as an e-mail and a web page. Can be applied.

(Reference position determination method)
In the embodiment, the example in which the character or the character string displayed at the midpoint of the line segment connecting the two start point positions of the pinch-in operation / pinch-out operation is determined as the reference information is not limited to this. The character or character string displayed at the midpoint of the line segment connecting the two end positions of the pinch out operation may be determined as the reference information.

(Timing to change the display format of the reference information)
In the embodiment, the display form of the reference information is changed before the display layout is changed. However, the present invention is not limited to this. For example, the display form of the reference information is changed before the display layout is changed. Instead, the display form of the reference information may be changed after the display layout is changed. In addition, the display form of the reference information may be different before and after the display layout is changed. In short, as long as it is possible to easily identify the reference information after changing the display layout, any change timing and change contents of the display form may be used.

(Omission of the function to change the display format of the reference information)
In the embodiment, the display control function included in the information terminal device 100 (display control circuit 114) includes a function of changing the display mode (color, underline, blinking, etc.) of the selected reference information. It is good also as a structure which is not included. Even when the display mode is not changed, the reference information is arranged at the reference position (that is, approximately the same position as before the display layout is changed) after the display layout is changed. Information can be easily grasped.

(Changing the display position of reference information)
In the embodiment, basically, the reference information is displayed at the reference position. In addition to this, for example, as illustrated in FIGS. 29 and 31, the reference information is displayed in the display position of the first character (for example, the cell in the upper left corner for horizontal writing and the cell in the upper right corner for vertical writing). ) May be displayed. Even in this case, the user can easily recognize the reference information. In particular, the reference information (attention information) often means that the user has read so far, and placing the reference information at the display position of the first character continuously displays the maximum amount of book data that can be read by the user. Can be said to be preferable.

(How to display book data after changing the display layout)
In the information terminal device 100 of the embodiment, any method may be used for displaying the book data after changing the display layout as long as the book data after changing the display layout is displayed as a result.

  For example, after assigning characters to all cells in the cell matrix, the book data may be displayed according to this assignment. Further, the characters assigned to the cells may be displayed sequentially from the cell to which the characters have been assigned.

  Alternatively, the characters may be displayed one by one sequentially from the display position of the first character toward the rear (the direction of the display position of the last character). First, after displaying the reference information in the cell corresponding to the reference position, the characters are displayed one character at a time sequentially from the reference position toward the front (in the direction of the display position of the first character) from the reference position. The characters may be displayed sequentially from the reference position toward the rear (in the direction of the display position of the last character) one character at a time.

  A plurality of characters may be displayed together. For example, all characters may be displayed together. Flickering can be reduced when a method of displaying all characters together is used.

  As a method for displaying a plurality of characters collectively, so-called double buffering can be employed. Double buffering is to write multiple characters one by one to the off-screen area, and after all the characters have been written, reflect the off-screen area to the on-screen area. It is a method to do. By displaying in this way, flicker can be reduced.

  In addition, when performing display adjustment processing such as prohibition processing, all characters may be displayed first, and then display adjustment processing may be performed later. It may be displayed. When the method of performing the display adjustment process first is adopted, the movement of the character string on the display can be reduced, so that the flicker can be reduced.

  When displaying one character at a time, the necessity of display adjustment processing may be determined for each character, and display adjustment processing may be performed whenever necessary. For example, if a new line character is assigned while displaying one character at a time, according to the rules for applying this new line character, if necessary (ie if applying a new line), the next character is And so on.

  The present invention is applicable to various display control devices, various information terminal devices, various integrated circuits, various computers, and the like that can control display of display target data.

DESCRIPTION OF SYMBOLS 100 Information terminal device 102 Processing circuit 104 Memory | storage device 105 Track ball 106 Touch panel 107 Operation button 108 Display drive circuit 110 Display (display device)
112 Wireless communication module 114 Display control circuit (display control device)
202 Data display part 204 Page change part 206 Display form change part (display form change means)
208 Display setting change section (display setting change means)
210 Display layout changing unit (display layout changing means)
212 Reference position determination unit (reference position determination means)
214 Storage unit

Claims (13)

Reference position determining means for determining, as a reference position, a part of the position on the display area where the text data is displayed, according to a user operation;
Display setting changing means for changing display settings of the text data displayed in the display area;
Display layout changing means for changing the display layout of the text data in accordance with the change of the display setting,
The display layout changing means includes
If the reference position is determined when the display layout is changed, the character or character string displayed at the reference position is determined as reference information, and the reference information remains at the reference position even after the display layout is changed. The display control apparatus, wherein the display layout is changed so as to be displayed. The display control apparatus according to claim 1, further comprising: a display form changing unit that makes the display form of the reference information different from other data. The reference position determining means includes
The display according to claim 1 or 2, wherein when a user operation for designating one point on a touch panel is performed as the user operation for designating the reference position, the one point is determined as the reference position. Control device. The reference position determining means includes
When a user operation for simultaneously specifying two points on the touch panel is performed as a user operation for changing the display setting, a midpoint of a line segment connecting the two points is determined as the reference position. The display control apparatus according to any one of claims 1 to 3. The reference position determining means includes
When some characters or character strings of the text data are selected before the display layout is changed, a display position of the selected characters or the character string is determined as the reference position. The display control apparatus according to any one of claims 1 to 4. The reference position determining means includes
The display control apparatus according to claim 5, wherein a center of a display position of the selected character or the character string is determined as the reference position. The display setting changing means includes
As a user operation for changing the display setting, when an enlargement or reduction operation is performed by moving the contact position on the touch panel, the font size according to the movement distance between the start point and the end point of the contact position, The display control device according to claim 1, wherein a font size of the text data is changed. The display setting changing means includes
The plurality of font size candidates are displayed in the display area, and the font size of the text data is changed to a font size selected by the user from the plurality of candidates. The display control apparatus according to any one of the above. An information terminal device comprising the display control device according to any one of claims 1 to 8. An integrated circuit comprising the display control device according to claim 1. A reference position determining step for determining, as a reference position, a part of the position on the display area where the text data is displayed, according to a user operation;
A display setting changing step for changing the display setting of the text data displayed in the display area;
A display layout changing step of changing a display layout of the text data in response to the change of the display setting,
In the display layout changing step,
If the reference position is determined when the display layout is changed, the character or character string displayed at the reference position is determined as reference information, and the reference information remains at the reference position even after the display layout is changed. The display control method, wherein the display layout is changed so as to be displayed.   A program for causing a computer to function as the display control device according to any one of claims 1 to 8, wherein the program causes the computer to function as each of the units included in the display control device.   A computer-readable recording medium in which the program according to claim 12 is recorded.

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