JP2010204891A - Content display terminal and content display control program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a content display terminal and a content display control program displaying pages before and after the current page while keeping the current page displayed. <P>SOLUTION: The content display terminal has a rectangular touch display area, where content of pages on both sides are displayed. The display area is divided into a polygonal second region including one corner of the display area, a third region formed by folding the second region, and a first region other than the second and third regions. An image on the top side of a page selected in advance is displayed in the first region, an image on the top side of a page N is displayed in the second region, and an image on the rear side of a page N-1 is displayed in the third region. The pages displayed in the second and third regions are sequentially and continuously changed by touch operation. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a content display terminal and a content display control program, and more particularly to a content display terminal capable of turning pages of content by a touch operation and a content display control program operating on the content display device.

  In recent years, thin display terminals such as electronic paper and electronic books have been developed, and an increasing number of users browse contents such as documents and books using the display terminals. In such a display terminal (hereinafter referred to as a content display terminal), it is possible to start / stop page switching (hereinafter referred to as page turning) by clicking a specific button or place.

  However, with paper media, the size and speed of page turning can be adjusted freely with the sensation of a finger or hand, but the method of clicking a specific button or location above allows you to quickly turn the page you want to turn. I can't find it. In view of this, there is a need for a method for enabling a page turning operation in a content display terminal in the same manner as a conventional paper medium.

  As a technique for improving the operability of turning pages, for example, the following Patent Document 1 discloses a thin display terminal including a plurality of operation switches having pressure sensors provided around a display unit using a plastic conductive light emitting element. Is disclosed, and a method of changing the page turning speed by touching a pressure sensor provided in the periphery is described.

  Further, Patent Document 2 below discloses a pen-input personal portable terminal that includes an early page turning means, a half-page turning means, and a memo discard gesture means. It describes a method for enabling turning and half-page turning.

  Further, in Patent Document 3 below, at least one of the contact pressure and contact area of the finger that has contacted the display unit and the finger input detection means for detecting the contact position of the finger, and at least the detected finger contact pressure and contact area The page turning input determining means for determining the presence of page turning input based on the moving direction of one finger and the image information of the page currently output on the display unit when it is determined that the page turning input has been made. A portable information device including a page image update means for updating image information on any one of the front and rear pages is disclosed, and the page turning is determined based on the pressure or area of the finger in contact with the display unit and the contact position / movement direction. A method for determining presence and speed is described.

  Further, in Patent Document 4 below, a page turning instruction unit for a user to issue a page turning instruction, a page turning position instructed by the page turning instruction unit, and a predetermined reference point or reference line, A distance calculation unit for calculating the distance of the page, a page turning speed calculation unit for calculating a page turning speed based on the distance information generated by the distance calculation unit, and contents to be displayed on each page of the electronic book. An accumulated page information accumulating unit, a page turning control unit for sequentially outputting the contents accumulated in the page information accumulating unit at the page turning rate calculated by the page turning rate calculating unit, and the page turning control. An electronic book display terminal comprising: a display unit for displaying the content output from the display unit; and a page turning according to a distance from a certain reference point / line Method of changing the speed is described.

  Further, in Patent Document 5 below, means for detecting at least one of the direction of bending, the amount of bending and the duration of bending applied to the display unit, the direction of bending detected, the amount of bending and An information device comprising: means for determining whether or not a page turning input is made based on at least one of bending durations, and updating information output to a display unit when it is determined that page turning input is present A method of turning pages corresponding to the amount of physical bending of electronic paper is described.

JP 2002-373045 A JP 9-44336 A JP 2000-163193 A JP 7-56935 A JP 2004-318123 A

  However, the conventional page turning is a method of switching the currently displayed page to the designated page when the page turning is instructed while a certain page is displayed. In this method, a certain page is displayed. There was a problem that the contents of the pages before and after that could not be confirmed.

  The techniques described in each of the above patent documents all improve the operability of page turning, but can be executed by specifying the page turning speed and shape with a single pen operation. Since the speed of the sheet cannot be accelerated or decelerated or the page turning shape cannot be changed, there is a problem that the page turning operation cannot be performed in the same manner as a paper medium.

  The present invention has been made in view of the above problems, and its main purpose is a content display terminal and content capable of displaying the contents of the previous and subsequent pages without changing the currently displayed page. To provide a display control program.

  Another object of the present invention is to provide a content display terminal and a content display control program capable of specifying the page turning speed and shape with a single pen operation.

  In order to achieve the above object, the present invention provides a content display terminal that includes a rectangular display area that can be touch-operated, and that displays contents each having a front surface and a back surface in each display area. A storage unit for storing; and a control unit for controlling display of the content, wherein the control unit includes the display area as a polygonal second region including one corner of the display area; The second region is divided into a third region that is folded with a side opposite to the corner as an axis of line symmetry, and the first region other than the second region and the third region, and An image of the surface of a page pre-selected from all pages (X page) is displayed in the area 1 and the surface of the page of N (N is an integer of 1 or more and X or less) is displayed in the second area. The image is displayed and the third An image of the back side of the page N-1 (X when N is 1) is displayed in the area, and the pages displayed in the second area and the third area are sequentially successively displayed by the touch operation. To switch.

  In addition, the present invention is a content display control program that operates on a content display terminal that includes a rectangular display area that can be touch-operated, and that displays content in which each page has a front surface and a back surface. The content display terminal is folded with the display area as a polygonal second region including one corner of the display area and the second region as a line-symmetric axis on the side facing the corner. A page preliminarily selected from all pages (X pages) divided into a third area, a first area other than the second area and the third area, and the first area. The surface image of N (N is an integer greater than or equal to 1 and less than or equal to X) is displayed in the second area, and N−1 (N is 1) is displayed in the third area. X) display the image on the back of the page Allowed, by the touch operation, sequentially page displayed in the second region and the third region so that they appear as a control unit, which continuously switch.

  The content display terminal and the content display control program of the present invention have the following effects.

  The main effect of the present invention is that the contents of the previous and subsequent pages can be displayed without changing the currently displayed page.

  The reason is that the control unit (content display control program) of the content display terminal includes a first area that is a display area, a second area that is a polygon including one corner of the display area, and a second area. The image is divided into a third region that is folded at a side opposite to the corner, an image of the surface of a preselected page is displayed in the first region, and N (N is 1 or more) is displayed in the second region. Integer) Displays the image on the front side of the page, displays the image on the back side of page N-1 in the third area, and the first area when a touch operation is performed in a predetermined area in the display area This is because control is performed to sequentially and continuously switch the pages displayed in the second area and the third area without changing the page displayed on the screen.

  Another advantage of the present invention is that the page turning speed and shape can be specified with a single pen operation.

  The reason is that the control unit (content display control program) of the content display terminal determines the length, direction, and trajectory of the trajectory based on the touch start position / time and the touch end position / time in a predetermined area in the display area. This is because control is performed to calculate / determine / change the speed (time interval) for switching pages and the shape of the second region based on the calculated time.

It is a block diagram which shows the structure of the content display terminal which concerns on one Example of this invention. It is a top view which shows the turning start area in the display part / input part of the content display terminal which concerns on one Example of this invention. It is a top view which shows each image display area in the display part / input part of the content display terminal which concerns on one Example of this invention. It is a figure explaining the method of page turning based on one Example of this invention. It is a figure which defines the pen touch in the page turning which concerns on one Example of this invention. It is a figure which shows an example of the page turning based on one Example of this invention. It is a figure which shows the other example of the page turning based on one Example of this invention. It is a figure which shows the other example of the page turning based on one Example of this invention. It is a figure which shows the example of a change of the page turning speed which concerns on one Example of this invention. It is a figure which shows the example of a change of the page turning shape which concerns on one Example of this invention. It is a flowchart figure which shows the flow of the page turning process which concerns on one Example of this invention. It is a flowchart figure which shows the flow of the image display in the page turning process which concerns on one Example of this invention.

  As shown in the background art, various methods have been proposed for enabling a content display terminal to be operated in the same manner as a conventional paper medium. However, since all of the display contents are changed in response to the page turning operation in the conventional method, an operation such as checking the contents of the previous and next pages by turning only the edge of the page while displaying a specific page is performed. I could not.

  In addition, the conventional method requires a plurality of operations to instruct how to turn the page, and can be executed by specifying the page turning speed and shape with a single pen operation or adding the page turning speed. There was a problem that it was not possible to slow down or change the page turning shape.

  Therefore, in the present embodiment, the display is controlled so that the contents of the previous and subsequent pages can be confirmed without changing the currently displayed page, and the page turning speed and shape can be achieved with a single pen operation. Can be specified.

  Specifically, in a content display terminal including a touch panel that can be operated by pen touch or finger touch on the screen, the display area is a first area (current page image display area), and the upper right and lower right of the display area. , A polygon (preferably a triangle) second area (turned page image display area) including either the upper left or lower left corner, and a side opposite to the turned page image display area as the axis of line symmetry The image is divided into a third area (back image display area) that is folded, and the first area displays an image of the front surface of the page selected in advance from all pages (page X), and the second area. Displays an image of the front side of the page N (N is an integer not less than 1 and not more than X), and displays an image of the back side of the page N-1 (X when N is 1) in the third area. A predetermined touch operation was performed in the area The case, without changing the page displayed in the first area, the page displayed in the second region and the third region successively performs control to continuously switch back and forth on page.

  Further, when a predetermined touch operation is performed in a predetermined area, the length of the trajectory, the direction, and the time for drawing the trajectory are calculated based on the touch start position / time and the touch end position / time, Based on these, control is performed to determine / change the speed of switching pages (time interval) and the shape of the second region.

  In order to describe the above-described embodiment of the present invention in more detail, a content display terminal and a content display control program according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a block diagram showing the configuration of the content display terminal of this embodiment. 2 and 3 are diagrams for explaining each area of the display unit (input unit), and FIG. 4 is a diagram for explaining a page turning method according to the present embodiment. FIGS. 5 to 10 are diagrams showing specific examples of page turning, and FIGS. 11 and 12 are flowcharts showing the procedure of page turning according to the present embodiment.

  In this specification, each content page is composed of a front surface and a back surface. In other words, a page in this specification corresponds to one paper medium.

  As shown in FIG. 1, a content display terminal 10 of this embodiment includes a CPU (Central Processing Unit) 11, a ROM (Read Only Memory) 12, a RAM (Random Access Memory) 13, a display unit 14, an input unit 15, and the like. It is configured.

  The CPU 11 controls the operation of each unit.

  The ROM 12 stores various programs such as a program that functions as the main control unit 12 a, and these programs are executed by the CPU 11. The main control unit 12a has a function of causing the display unit 14 to display an image of each page of the content. When the page turning is instructed, the main display unit 12a does not change the currently displayed page, and one corner of the display unit 14 is displayed. Control is performed so that images on the front and back of the previous and subsequent pages are sequentially displayed in a region including the region and a region obtained by folding the region. Also, a trajectory is obtained based on the touch start position / time and the touch end position / time, and the page turning speed (time interval) and shape are determined / changed from the length, direction, and time of drawing the trajectory. Control. The control of the main control unit 12a may be executed as a program (content display control program) or may be executed as hardware.

  The RAM 13 stores various data and includes a page data storage unit 13a, a control information storage unit 13b, and the like. The page data storage unit stores an image of each page of the acquired content. The control information storage unit stores setting information for controlling the operation of the content display terminal 10.

  The display unit 14 includes a liquid crystal display (LCD), an organic EL (electroluminescence) display, and the like, and displays an image of the front or back surface of each page.

  The input unit 15 is a pressure-sensitive touch panel in which transparent electrodes are arranged in a grid pattern on the display unit 14. The input unit 15 detects XY coordinates of a force point pressed by a finger or a touch pen as a voltage value, and a detected position The signal is output to the CPU 11 as an operation signal.

  FIG. 1 shows a basic configuration of the content display terminal 10 according to the present embodiment, and the configuration can be appropriately changed as long as an arbitrary page of content composed of a plurality of pages can be displayed. For example, an HDD (Hard Disk Drive) for storing contents may be provided, or a communication unit including a NIC (Network Interface Card), a modem, or the like, and a LAN (Local Area Network) or WAN (Wide Area Network) may be provided. ) Etc. may be made available via a network.

  In addition, the content display terminal 10 according to the present embodiment may be a device (for example, an electronic paper, an electronic book, or an electronic notebook) for displaying a content page, or a device (for example, an image forming apparatus) having other functions. (MFP: Multi Function Peripheral), cellular phone, PDA (Personal Digital Assistants), computer terminal) may be provided with the function as the main control unit 12a.

  FIG. 2 is a diagram illustrating an example of an overview configuration of the content display terminal 10 according to the present embodiment. Here, the content display terminal 10 is an electronic paper, and a touch panel (display unit 14 / input unit 15) that accepts an image display of each page and an input operation from a touch pen or a finger is provided on the front surface of the content display terminal 10. It has been.

  The entire surface of the display unit 14 / input unit 15 is called a display area 20, and an area including an arbitrary corner of the display area 20 is called a turning start area 21. In the following, it is assumed that the turning start area 21 is on the upper right, but may be upper left, lower right, and lower left. In this case, the processing described below may be considered as being bilaterally symmetric or vertically symmetric. Further, an area including an arbitrary side of the display area 20 may be used as the turning start area 21. In that case, an arbitrary point on the side may be considered as an origin of the following processing.

  FIG. 3 shows a display example when the Nth page is displayed and the first page turning is performed in the display of the content including the X page, and FIG. 4 is a table when the page turning is sequentially performed. An example is shown.

  The current page image display area 22 displays an image of the front surface of the Nth page, and the back surface image display area 23 displays an image of a portion corresponding to that area of the back surface of the Nth page (upper left of the back surface of the Nth page). In the turning page image display area 24, an image of a portion corresponding to that area on the surface of the (N + 1) th page (upper right image on the surface of the (N + 1) th page) is displayed.

  At this time, when the second page turning is performed, as shown in FIG. 4A, the image in the current page image display area 22 (the image on the front surface of page N) is not changed, and the back image display area 23 is displayed. , The screen on the back side of the (N + 1) th page is displayed, and the front page image of the (N + 2) th page is displayed in the turning page image display area 24. Similarly, when page turning is performed M times from page N, the image in the current page image display area 22 (the image on the front side of page N) does not change, and the back screen display area 23 has the N + M−1th page. An image of the back side is displayed, and an image of the front side of the (N + M) th page is displayed in the turning page image display area 24.

  When the page turning operation is finished and the page L to be displayed is determined, the front page image of the Lth page is displayed in the current page image display area 22, and the back image display area 23 and the page turning page image display area 24 are displayed. The image corresponding to the area of the image on the surface of the Lth page is stopped or displayed. That is, the image of the surface of the Lth page is displayed on the entire display area 20.

  Here, comparing the concept of page turning according to the present embodiment with the concept of conventional page turning, the concept of conventional page turning is a concept of completely turning a booklet page by page as shown in FIG. The current page image display area 22, the back image display area 23, and the turning page image display area 24 are linked so that the pages are sequentially switched.

  For example, the N page front image is displayed in the current page image display area 22, the N page back image is displayed in the back image display area 23, and the (N + 1) page front image is displayed in the turning page image display area 24. When the second page turning is performed in this state, the front image of the (N + 1) th page is displayed in the current page image display area 22, the back screen of the (N + 1) th page is displayed in the back image display area 23, and the (N + 2) page is displayed in the turning page image display area 24. An image of the surface of the eye was displayed.

  This method is effective in usage patterns in which each page of content is browsed in order, but when checking what is written on the previous or previous page while browsing the current page. Inconvenient.

  On the other hand, the page turning concept of the present embodiment is a concept of turning only the corners of the booklet one page at a time as shown in FIG. 4B. The page of the current page image display area 22 is not changed, and the back image The display area 23 and the turning page image display area 24 are interlocked so that the pages are sequentially switched. That is, the concept of page turning (page turning of a page) and the conventional page turning of this embodiment are completely different.

  The image displayed in the back image display area 23 may be displayed as if the corner of the paper medium is actually folded (that is, tilted with respect to the image in the current page image display area 22). In order to simplify the process, the image may be displayed in the same direction as the image in the current page image display area 22.

  Also, in this embodiment, assuming that the page is turned with the front side facing up, the contents each page is composed of the front side and the back side are displayed in the current page image display area 22 and the turning page image display area 24. Although the image of the front side of the page is displayed and the image of the back side of the page is displayed in the back side image display area 23, the front side and the back side of the page are distinguished for convenience, and the front side and the back side may be reversed.

  Hereinafter, the page turning instruction operation will be described in detail.

  FIG. 5 shows a page turning operation by a pen touch or a finger touch (hereinafter referred to as a pen touch). One page turning operation starts with touching the screen, and ends when the pen or finger is moved on the screen while being touched, and is removed from the screen. The pen touch start position is Pon, the time is Ton, the pen touch end position is Poff, and the time is Toff. A line defined by the start position and the end position is called a pen trajectory. The length Plen of the pen locus is the distance between Pon and Poff, and the time (touch time) Tdraw for drawing the locus is obtained by Toff-Ton. In addition, an angle formed by the vertical direction of the display area 20 and the locus of the pen is defined as Pd.

[Start page turning]
When the pen trajectory is determined by the pen touch operation in the state where the page turning is not performed and the image of the Nth page is displayed on the entire surface of the display area 20, the main control unit 12a (content display control program) It is determined whether the pen touch start position is within the page turning start area 21. If the pen touch start position is within the page turning start area 21, the following page turning process is started. When not in the turning start area 21, other normal input processing is performed.

  In the page turning, the speed (time interval) and shape (shape and size) of the page turning are determined based on the pen trajectory, and the speed determined here is detected until the next pen trajectory is detected. The page turning is automatically repeated according to the shape. When the page to be turned is the last page of the content, the page turning operation is continued by returning to the first page, or the page turning operation is ended.

(1) Page turning speed After the turning process of one page, the interval until the next page is automatically turned is defined as the page turning time interval Tinc, and this time interval is defined as the page turning start time. This is determined based on the time Tdraw at which the pen trajectory is drawn.

  For example, when the page turning time interval Tinc = Tdraw (seconds) × 1.2, if Tdraw is 0.5 seconds, the page turning time interval Tinc is 0.6 seconds. Note that the page turning time interval need not simply be proportional to Tdraw, and Tinc may be calculated from Tdraw by an arbitrary calculation. Alternatively, it may be determined by calculation from the relationship between Tdraw and Plen. For example, if Tinc = x ÷ (Plen / Traw) (x is an arbitrary constant), the page turning time interval can be determined in proportion to the pen moving speed when the pen trajectory is drawn.

(2) Page turning shape The page turning shape is calculated based on the pen trajectory when starting the page turning. Specifically, as shown in FIG. 6, a line having a certain length L1 from the zero point to the angle Pd of the pen locus from the corner of the display unit 14 with the turning start area 21 as the origin (0 point). The point obtained by subtracting the minute Line1 is defined as M. L1 is arbitrarily calculated from the length of Plen. For example, L1 = Plen × 3. A straight line perpendicular to the line segment Line1 and the point M is referred to as Line2, and points where Line2 intersects with the peripheral edge of the display area 20 are defined as N1 and N2. Further, a point that is line-symmetric with respect to the 0-point Line 2 is N3.

  A figure formed by N1, N2, and 0 points is used as a turning page image display area 24. Further, a figure obtained by folding the turning page image display area 24 with Line 2 is defined as a back image display area 23. At this time, as shown in FIG. 7A, when the back image display area 23 protrudes from the display area 20, only the area that fits in the display area 20 may be set as the back image display area 23.

  Thus, depending on the position of Line 2 calculated from the length and direction of the trajectory, the turning page image display area 24 and the back image display area 23 are triangular (see FIG. 6) or polygon (see FIG. ))).

  In order to express the thickness of the turned pages, a line segment connecting N1 and N3 and a line segment connecting N3 and N2 are proportional to the number of pages turned, as shown in FIG. 7B. You may change the thickness.

  In addition, if the pen trajectory is created from the state where the pen stays for a certain time at the start position of the page trajectory, it is determined that the operation is to turn a large number of pages at once, and the number of pages to be turned one time May be an arbitrary plurality of pages.

  Also, as shown in FIG. 8, when the display area 20 has the layout of the entire page, the outside of the page layout is set as the turning start area 21, the start position of the pen locus is outside the page layout, and the end position is the page layout. May be determined as an operation of turning a large number of pages at a time.

[Change speed while turning pages]
When a new pen trajectory is detected during the page turning operation, the page turning speed / shape is changed or the page turning is ended.

  For example, as shown in FIG. 9, when the start position of a new pen locus detected during the page turning operation is the turning page image display area 24, the coordinates of the start position Pon and the end position Poff are obtained, If the direction from the start to the end of the trajectory is close to 0 point, the page turning speed is reduced (the page turning time interval is increased), and if the direction is away from 0 point, the page turning speed is increased. Move forward (reduce the page turning time interval).

  This speed addition / subtraction can be performed according to the length of the trajectory or how far (closer) the zero point is. The addition / subtraction may be performed based on the time when the locus is drawn, the pen moving speed when the locus is drawn, or the pen pressure. If the speed is negative as a result of the speed subtraction, the page is turned in the reverse direction.

  For example, the M page is turned from the N page, the back image of the N + M−1 page is displayed in the back image display area 23, and the front image of the N + M page is displayed in the flip page image display area 24. In this state, when page turning in the reverse direction is performed once, M is decremented by 1. Therefore, the back side image display area 23 displays the back side image of the (N + M−2) th page, and the turning page image display. In the area 24, an image of the surface of the (N + M−1) th page is displayed.

  Note that instead of addition / subtraction, the page turning speed can be set directly according to the calculation based on either the length of the trajectory, the time to draw the trajectory, the pen moving speed at the time of drawing the trajectory, or any combination. You may decide. In this case, if the direction from the start to the end of the pen trajectory is close to the 0 point, the page turning operation is performed. If the direction is away from the 0 point, the reverse page turning operation is performed. .

  In addition, when the start position of the new pen locus detected during the page turning operation is the back image display area 23, the start position of the new pen locus is the page turning image display area 24. The same processing may be performed.

  When the start position of the new pen locus detected during the page turning operation is the page turning image display area 24, the page turning operation is performed. You may make it perform the operation | movement which turns a page.

[Change shape during page turning]
When the start position of the new pen locus detected during the page turning operation is the back surface image display area 23, the page turning shape is changed based on the pen locus.

  FIG. 10 shows how the page turning shape is changed. Here, as shown in FIG. 10 (a), two straight lines LL1 and LL2 are drawn at intervals of an angle of 0 ° to 30 °, and the respective regions of the back surface image display region 23 divided by them are respectively represented as: A1 area, A2 area, and A3 area.

  As shown in FIG. 10B, when the start position of the new pen trajectory is the A1 area, the straight line LL3 connecting the pen trajectory start position and N2 and the pen trajectory end position and N2 are connected. An angle at which the straight line LL4 intersects is defined as d0. At this time, as shown in FIG. 10C, the page turning shape is calculated using a figure obtained by rotating the back image display area 23 at an angle d 0 around the point N 2 as a new back image display area 23. Here, the point after rotation of N1 is N1 ', and the point after rotation of N3 is N3'. In the case where the back image display area 23 is another polygon, the rotation calculation may be similarly performed on each vertex. If d0 is negative, the back image display area 23 may be rotated in the reverse direction.

  When the start position of the new pen locus is the A3 area, the straight line connecting the start position of the pen locus and N1 is LL3, and the straight line connecting the end position of the pen locus and N1 is LL4. Can be done.

  Further, as shown in FIG. 10D, when the start position of the new pen locus is the A2 area, the distance from the start position of the pen locus to the zero point and the end position of the pen locus is 0. The difference in distance to the point is set to w0. At this time, as shown in FIG. 10E, the page turning shape is calculated using a figure (similar figure) obtained by translating the back image display area 23 by a distance of w0 from the 0 point as a new back image display area 23. . In the case where the back image display area 23 is another polygonal shape, the parallel movement may be performed similarly for each vertex. If w0 is negative, the back image display area 23 may be translated in the reverse direction.

[End page turning (select page)]
If the distance between the start position and the end position is less than a certain value in the new pen trajectory detected during the page turning operation, it is determined that the page has been selected, and the page traversal is completed and the pen trajectory is confirmed. Assuming that the page displayed in the turning page image display area 24 is selected, the page turning operation is terminated, the page is displayed in the current page image display area 22, and the turning page image display area 24 and The display of the back image display area 23 is stopped.

  The selection of the page may be determined when the pen is continuously touched for a certain time at the end position. Alternatively, it may be determined that the page is selected when the page turning speed becomes smaller than a certain value due to the speed change during the page turning described above.

  The selection of the page may be determined when there is a pen touch that starts the current page image display area 22. Alternatively, in a new pen locus, the start position may be the current page image display area 22 and the end position may be the turning page image display area 24 or the back image display area 23.

  Next, the page turning procedure based on the above method will be described with reference to the flowcharts of FIGS. The following processing is executed by the main control unit 12a (content display control program).

  First, the content is read from the page data storage unit 13a (S101), and the first page image of the content is displayed on the display unit 14 (S102). Then, the external event is monitored (S103), and when the external event is detected, the type of the external event is determined (S104).

  When the external event is the detection of the pen locus, the start position / time and the end position / time of the pen touch are specified to calculate the pen locus (S105), and then it is determined whether the page turning operation is being performed (S106). .

  If the page turning operation is not in progress, it is determined whether the pen touch start position is the page turning start area 21 (S107). If it is not the page turning start area 21, normal input processing is performed (S111), and the process returns to step S103. .

  If it is the page turning start area 21, the page turning speed is calculated based on the time (Tdraw) for drawing the trajectory (S108), and then the page based on the length (Plen) and the angle (Pd) of the trajectory. The shape of the turning is calculated, and the current page image display area 22, the back image display area 23, and the turning page image display area 24 are determined (S109). Then, the page turning is started based on the calculated page turning speed and shape, and the page turning timer monitoring is started (S110).

  Then, returning to step S103, the external event is monitored, and if the external event is a timer interrupt at the page turning interval, is the turning page (the page currently displayed in the turning page image display area 24) the last page? (S119), if it is not the last page, the page is turned to the next page (S120), if it is the last page, the page is turned to page 1 (S121), the image is displayed (S122), and the process returns to step S103. .

  In the image display in S122, as shown in FIG. 12, a portion corresponding to the current page image display area 22 is extracted from the current page image and displayed (S201), and it is determined whether the page turning operation is in progress (S201). S202). Since the page turning operation is being performed here, a portion corresponding to the back image display area 23 is extracted from the back image of the page of the turning page -1 (the last page when the turning page is the first page), and if necessary. Then, the extracted image is rotated and displayed in accordance with the orientation of the back image display area 23 (S203), and the portion corresponding to the turning page image display area 24 is extracted from the front image of the turning page and displayed (S204). . Note that the processing such as image extraction and rotation is a general image processing, and a description thereof will be omitted.

  Returning to FIG. 11, if the page turning operation is being performed in step S106, it is determined whether the pen touch start position is the turning page image display area 24 (S112). If it is not the turning page image display area 24, normal input processing is performed. (S111), and the process returns to step S103.

  If it is the turning page image display area 24, after calculating the turning speed based on the time (Tdraw) for drawing the trajectory (S113), it is determined whether the page is selected (S114). The page turning speed is changed to the speed calculated in S113, and the page turning timer monitoring interval is changed (S115), and the process returns to S103.

  If it is page selection, the page turning is ended (S116), the turning page is set as the selected page (S117), the image of the selected page is displayed (S118), and the process returns to step S103.

  In the display of the image in S118, as shown in FIG. 12, the image of the selected page is displayed on the entire display area 20 (S201), and it is determined whether the page turning operation is being performed (S202). Here, since the page turning operation is not being performed, the image display in the back image display area 23 and the image display in the turning page image display area 24 are not performed.

  Thus, in the present embodiment, the display area 20 is divided into the current page image display area 22, the back image display area 23, and the turning page image display area 24, and the display contents of the current page image display area 22 are not changed. Since the display contents of the back image display area 23 and the turning page image display area 24 are sequentially and continuously changed, it is possible to check the contents of the pages before and after browsing the contents of the specific page.

  Further, based on the touch start position / time and the touch end position / time, the length of the trajectory, the direction, the time for drawing the trajectory are calculated, and the page turning speed and shape are determined / changed based on the calculated time. The page turning can be controlled easily and reliably with a single operation, and an operation with the same feeling as a paper medium can be realized.

  In addition, this invention is not limited to the said Example, Unless it deviates from the meaning of this invention, it can change suitably. For example, in the above embodiment, the front page (or back side) image of each page is displayed in the current page image display area 22, but the back side image of a predetermined page is displayed on the left side of the current page image display area 22. It is good also as a structure by which it displays, and the image of the surface of the next page is displayed on the right side (namely, it displays in a double spread form). In that case, the page may be turned on the page on the right side, the page may be turned on the page on the left side, or the page is turned on the pages on both sides. You may be able to.

  The present invention is applicable to a display terminal having a function for displaying content and a touch panel function, and a content display control program for controlling display of content on the display terminal.

10 Display terminal 11 CPU
12 ROM
12a Main control unit 13 RAM
13a Page data storage unit 13b Control information storage unit 14 Display unit 15 Input unit 20 Display area 21 Turning start area 22 Current page image display area 23 Back image display area 24 Turning page image display area 25 Non-display area

Claims (10)

In a content display terminal that includes a rectangular display area that can be touch-operated, and that displays content that includes a front surface and a back surface of each page.
A storage unit that stores the content; and a control unit that controls display of the content.
The controller is
The display area includes a polygonal second region including one corner of the display area, a third region in which the second region is folded with a side facing the corner as an axis of line symmetry, Dividing into a second region and a first region other than the third region;
In the first area, display the image of the surface of the page preselected from all pages (X page),
In the second area, display an image of the surface of N (N is an integer not less than 1 and not more than X) page,
In the third area, display an image of the back side of page N-1 (when N is 1),
The content display terminal, wherein pages displayed in the second area and the third area are sequentially and sequentially switched by the touch operation. The controller is
When the touch operation is performed in a predetermined area of the display area,
The content display terminal according to claim 1, wherein a page switching speed and a shape of the second region are determined based on a touch start position and time and a touch end position and time. The controller is
Based on the touch start position and time and the touch end position and time, the length, direction, and time of drawing the locus of the touch are calculated, and the time of drawing the locus and / or the length of the locus. 3. The content display terminal according to claim 2, wherein the page switching speed is determined based on the length of the trajectory, and the shape of the second area is determined based on the length and direction of the trajectory. The controller is
When the touch operation is performed in a predetermined area of the display area during the page switching operation,
The page switching speed is changed based on the direction of the trajectory, the time when the trajectory is drawn and / or the length of the trajectory, and the second region is changed based on the length and direction of the trajectory. The content display terminal according to claim 3, wherein the shape of the content is changed. The controller is
5. The content display terminal according to claim 4, wherein the page feed direction is changed according to whether the direction of the trajectory is a direction toward a peripheral portion or a center portion of the display area. A content display control program that operates on a content display terminal that includes a rectangular display area that can be touch-operated, and that displays content that includes a front surface and a back surface of each page.
The content display terminal;
The display area includes a polygonal second region including one corner of the display area, a third region in which the second region is folded with a side facing the corner as an axis of line symmetry, Dividing into a second region and a first region other than the third region;
In the first area, display the image of the surface of the page preselected from all pages (X page),
In the second area, display an image of the surface of N (N is an integer not less than 1 and not more than X) page,
In the third area, display an image of the back side of page N-1 (when N is 1),
A content display control program that functions as a control unit that sequentially and continuously switches pages displayed in the second area and the third area by the touch operation. The controller is
When the touch operation is performed in a predetermined area of the display area,
The content display control program according to claim 6, wherein a page switching speed and a shape of the second area are determined based on a touch start position and time and a touch end position and time. The controller is
Based on the touch start position and time and the touch end position and time, the length, direction, and time of drawing the locus of the touch are calculated, and the time of drawing the locus and / or the length of the locus. The content display control program according to claim 7, wherein the page switching speed is determined based on the length of the trajectory, and the shape of the second area is determined based on the length and direction of the trajectory. . The controller is
When the touch operation is performed in a predetermined area of the display area during the page switching operation,
The page switching speed is changed based on the direction of the trajectory, the time when the trajectory is drawn and / or the length of the trajectory, and the second region is changed based on the length and direction of the trajectory. The content display control program according to claim 8, wherein the shape is changed. The controller is
10. The content display control program according to claim 9, wherein the page feed direction is changed according to whether the direction of the locus is a direction toward a peripheral edge or a center of the display area.

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