JP2007179380A - Display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device capable of using a display area effectively in displaying windows. <P>SOLUTION: When either of a plurality of windows displayed in the display area is closed, the size of the remaining windows displayed in the display area is changed so that the entire display area is taken up by the remaining windows. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a display device, and more particularly to a display device including display means having a display area for displaying a window and display control means for displaying the window in the display area.

  By starting a plurality of application programs on the personal computer, a plurality of windows are displayed on the display screen of the personal computer. Various data corresponding to the application program are displayed in each window. The size of the window is enlarged or reduced according to the operation of an input unit such as a mouse.

  There has been proposed a method for automatically changing the size of a window when a certain condition is satisfied.

  Patent Document 1 describes that by enlarging one of two windows displayed on the screen, when the other window has an enlarged area, the other window is reduced. Yes.

In Patent Document 2, when a click operation is performed on a certain window in a state where a plurality of windows are opened on the screen, the window to be clicked is arranged on the uppermost layer, and other windows are displayed. It is described that the size of other windows is automatically adjusted so as not to be hidden by a new window arranged in the uppermost layer.
JP-A-9-106334 Japanese Patent Laid-Open No. 10-11259

  When one window is closed in a display area in which a plurality of windows are displayed, the display area portion occupied by the window can be used for displaying other windows. However, the conventional display device does not automatically adjust the size of the other window when one window is closed. For this reason, the display area corresponding to the closed window cannot be effectively used for displaying the window. In particular, it is a big problem that the display area cannot be used effectively in a portable terminal in which the limit of the display area size is severe.

  The present invention has been conceived in view of such circumstances, and an object of the present invention is to provide a display device that can effectively use a display area for displaying a window.

  In order to achieve the above object, according to an aspect of the present invention, a display device includes display means having a display area for displaying a window, and display control means for displaying the window in the display area, When the display control means closes any of the plurality of windows displayed in the display area, the display control means changes the size of the remaining window displayed in the display area, and the display area is changed by the remaining window. To make it all occupied.

  Preferably, the display device includes display means having a display area for displaying a window, and display control means for displaying the window in the display area, wherein the display control means displays the window in the display area. When any one of the plurality of windows is closed, the size of the remaining window displayed in the display area is changed so that the entire display area is occupied by the remaining window.

  Preferably, when the display control means opens a new window in the display area in a state where all of the display area is occupied by the window, the display control means changes the size of the already opened window and opens the already opened window. The display area is occupied by the open window and the new window.

  Preferably, the display control means sets the size of the newly opened window to be larger than the size of the already opened window.

  Preferably, the display device further includes a font size storage unit that stores a font size for each window size, and the display control unit is configured to change a font size of data to be displayed in the window when the window size is changed. To change.

  Preferably, the display device further includes a window pattern storage unit that stores an arrangement pattern of each window when the display area is divided into a plurality of windows, and the display control unit displays the display area in the display area. Arrangement pattern reading means for reading out the arrangement pattern of each window from the window pattern storage means according to the number of remaining windows displayed in the display area when closing any one of the three or more windows. Dividing means for dividing the display area by each window based on the arrangement pattern of each window read by the arrangement pattern reading means.

  Preferably, when the display control means opens a new window in the display area in a state where all of the display area is occupied by the window, the display control means includes a window to be displayed in the display area including the new window. An arrangement pattern reading unit that reads out the arrangement pattern of each window according to the number from the window pattern storage unit, and the display area is divided by each window based on the arrangement pattern of each window read by the arrangement pattern reading unit. Dividing means.

  Preferably, the display device has an application program storage means for storing a plurality of application programs, and a window size used for the application program is larger than a window size used for other application programs for each of the plurality of application programs. Priority order data storage means for storing priority order data indicating whether or not to perform, when the dividing means closes any of the three or more windows displayed in the display area, The display area is divided into each window based on the priority data of the application program corresponding to each of the remaining windows displayed in the display area and the arrangement pattern of each window read by the arrangement pattern reading means.

  According to the present invention, when closing any one of the plurality of windows displayed in the display area, the size of the remaining window displayed in the display area is changed, and the display area is changed by the remaining window. Will be occupied. As a result, the display area can be effectively used for window display.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, “communication” means transmission or reception or transmission / reception of various data including a call.

  FIG. 1 is a perspective view of the mobile phone 1. The mobile phone 1 mainly includes a first housing 2 and a second housing 4.

  A hinge portion 3 is attached to the first housing 2 so as to be rotatable about the axis A1 as a rotation axis. A second housing 4 is attached to the hinge portion 3 so as to be rotatable with respect to the hinge portion 3 about the axis A2 as a rotation axis.

  The first casing 2 is provided with a function button group 6 and an input button group 9 for the user to input information such as a telephone number on the main surface, and further a voice is provided to the microphone 11 (see FIG. 4). A microphone hole 11A is provided.

  The second housing 4 is provided with a substantially rectangular first display portion 14 and receiver hole 15 on the main surface thereof.

  FIG. 2 is a diagram illustrating a state in which the mobile phone 1 is folded. Compared with the state of FIG. 1, the cellular phone 1 is in a state in which the second housing 4 and the first housing 2 face each other when the hinge portion 3 is rotated along the axis A <b> 1. ing.

  FIG. 3 is a view showing the back surface of the mobile phone 1 in the state shown in FIG. On the side surface of the first housing 2, a shutter button 12 of the camera 18 (see FIG. 4) and a slot portion 38 for inserting an external memory 39 (see FIG. 4) are provided. 2 and FIG. 3, the state of the mobile phone 1 shown in FIG. 1 is referred to as “open state”.

  As shown in FIGS. 2 and 3, when the cellular phone 1 is folded, the main surfaces of the first housing 2 and the second housing 4 are in contact with each other.

  In particular, as shown in FIG. 3, on the back surface of the main surface of the first housing 2, the second display unit 20, the photographing lens 18A of the camera 18 (see FIG. 4), and the camera are used for photographing. A flash 19 and a speaker hole 21 are provided.

  FIG. 4 is a block diagram showing the configuration of the mobile phone 1. Referring to FIG. 4, the mobile phone 1 includes a control unit 10 that totally controls the operation of the mobile phone 1. The control unit 10 includes a CPU 101 (Central Processing Unit) that controls the mobile phone 1 based on a control program, a ROM (Read only memory) 102 that stores a control program in advance, and a RAM (Random) that temporarily stores the calculation results of the CPU 101. Access Memory) 103.

  Furthermore, the mobile phone 1 includes an antenna 30, a wireless communication unit 31 that performs wireless communication with the mobile phone base station via the antenna 30, an antenna 40, and a TV relay station that is received via the antenna 40 (see FIG. (Not shown) for demodulating a TV signal from a tuner 41 to produce a TV baseband signal, a speaker 22, a microphone 11, a camera 18 for taking a picture or video, a first display 14, and a second The display unit 20, the tilt detection unit 5, the direction detection unit 37, the function button group 6, the input button group 9, and the first casing 2 are incorporated in the first casing 2 to vibrate the first casing 2 when an incoming call is received. And an internal memory 107 for storing map information and other data, and a slot portion 38 for accommodating the external memory 39.

  The inclination detection unit 5 detects the degree of inclination (gravity vector) of the mobile phone 1. Specifically, the inclination detection unit 5 detects how much the mobile phone 1 is inclined with respect to the reference posture in the three-dimensional space. The inclination detection unit 5 is, for example, a triaxial acceleration sensor.

  The bearing detection unit 37 detects the bearing (geomagnetic vector). Specifically, the azimuth detecting unit 37 detects how much the mobile phone 1 is deviated from a predetermined direction. The direction detection unit 37 is, for example, a triaxial magnetic sensor.

  All the posture states of the mobile phone 1 including the absolute azimuth can be detected by the detection signals of the inclination detection unit 5 and the azimuth detection unit 37.

  The speaker 22 outputs a voice (such as a voice sent from the other party in a telephone call) received via the antenna 30 and a voice (a ringing tone or the like) based on the voice data stored in the ROM 102. The former sound is mainly output through the receiver hole 15, and the latter sound is mainly output through the speaker hole 21.

  FIG. 5 is a functional block diagram for explaining the display control function of the control unit 10. The control unit 10 includes a system control unit 111, a drawing unit 112, an application storage unit 113, a priority order storage unit 114, and a window data storage unit 115.

  The drawing unit 112 displays a window corresponding to the application program in the display area of the first display unit 14. When the drawing unit 112 closes any of the plurality of windows displayed in the display area, the drawing unit 112 changes the size of the remaining window displayed in the display area, and the remaining display window causes all of the display area to be displayed. It has a function to make it occupied. Furthermore, the drawing unit 112 changes the size of an already opened window when opening a new window in the display area in a state where the entire display area is occupied by the window, And a function of making the entire display area occupied by a new window.

  In the present embodiment, for ease of explanation, it is assumed that a maximum of three application programs are started simultaneously, and thereby a maximum of three windows are displayed. The number of application programs that can be activated simultaneously and the number of windows that can be displayed simultaneously are not limited to this. That is, the number of application programs that can be activated simultaneously and the number of windows that can be displayed simultaneously may be two or three or more.

  FIG. 5 shows a window pattern in which the display area is occupied by one window W1, a window pattern in which the display area is occupied by two windows W2 and W3, and a window in which the display area is occupied by three windows W4, W5 and W6. A pattern is shown. Each window pattern data 115 </ b> A is stored in the window data storage unit 115.

  W1 is a window pattern for full screen display. This is one type. The window height of W1 is H corresponding to the entire length of the display area for displaying the window.

  W2 and W3 are two-divided window patterns. W2 defines the size of the window displayed in the upper part of the display area, and W3 defines the size of the window displayed in the lower part of the display area. The sum of the window height h2 of W2 = aH / (a + b) and the window height h3 of W3 = bH / (a + b) is H. A plurality of types of patterns with different a and b are stored as a display pattern for two divisions composed of W2 and W3. For example, other combination data (not shown) such as (W21, W31) and (W22, W33) is stored in the window data storage unit 115 as combination data of W2 and W3.

  W4, W5, and W6 are display patterns for three divisions. W4 defines the size of the window displayed in the upper part of the display area, W5 defines the size of the window displayed in the middle part of the display area, and W6 defines the size of the window displayed in the lower part of the display area. The sum of W4 window height h4 = xH / (x + y + z), W5 window height h5 = yH / (x + y + z), and W6 window height h6 = zH / (x + y + z) is H. A plurality of types of patterns having different x, y, and z are stored as display patterns for three divisions composed of W4 to W6. For example, other combination data such as (W41, W51, W61), (W42, W52, W62), (W43, W53, W63) is stored in the window data storage unit 115 as combination data of W4, W5, and W6. Has been.

  In addition, an information display area for displaying a radio wave reception status, a charge amount, or an operation procedure is provided on any of the four screens of the first display unit 14, and a window is displayed on the other screen portions. May be secured as a display area. Alternatively, the entire screen may be secured as a display area for displaying a window.

  The window data storage unit 115 further stores a table 115B indicating the relationship between each window data and the font size. In this embodiment, the smaller the displayed window size, the smaller the font size of characters and the like displayed in the window. As shown in FIG. 5, font size data F1 is stored corresponding to W1. Font size data F21 is stored corresponding to W21. Font size data F22 is stored corresponding to W22. Font size data F31 is stored corresponding to W31. Font size data F32 is stored corresponding to W32. Font size data F41 is stored corresponding to W41. Font size data F42 is stored corresponding to W42. Font size data F43 is stored corresponding to W43. The relationship between W51 to W53 and W61 to W63 and font size data is also as shown in FIG.

  The system control unit 111 receives an application program start request and an end request. The application storage unit 113 stores a plurality of types of application programs such as mailers, browser software, and moving image playback software.

  The priority storage unit 114 stores a table 114A indicating the relationship between application types and priority data related to window sizes. An application with a higher priority indicated by the priority order data secures a larger window size than a window corresponding to another application program activated in parallel.

  For example, when one window is closed while three windows are open, the range of the remaining two windows that is expanded with respect to the space that is freed by closing the window has a high priority. The one window is wider than the lower priority window. Alternatively, only the window with the higher priority is expanded with respect to the space portion vacated by closing the window. As a result, for example, two windows that remain when one of the three windows is closed are a window corresponding to an application program for displaying a moving image and a window corresponding to an application program for displaying a memo. When the priority of the former is higher than that of the latter, a wider window size is secured for the former than for the latter.

  However, the newly activated application program is activated in a window having a size larger than any of the already activated application program windows, regardless of the priority order data. Therefore, a wide window area is secured for the application program having the highest necessity at that time among the plurality of running application programs.

  When the system control unit 111 receives an application program activation request, the system control unit 111 reads the application program corresponding to the request from the application storage unit 113 and performs activation control. Further, the system control unit 111 performs control to end the corresponding application program when receiving a request to end the application program. Furthermore, when the system control unit 111 receives a start request or end request for an application program, the system control unit 111 reads out the priority order data corresponding to the application program from the priority order storage unit 114 and indicates an application program to be started or ended And the priority order data are notified to the drawing unit 112.

  The drawing unit 112 manages a window displayed in the display area of the first display unit 14. The drawing unit 112 stores a management table 112A for managing a window pattern to be used, a window size, a font size for the window, an application number assigned to the window, and window priority data. The data in the management table 112A is updated based on the application number and priority data notified from the system control unit 111 when the application program is started and ended.

  FIG. 5 shows a management table 112A when the display area of the first display unit 14 is divided into two by two windows W2 and W3. More specifically, W2 has a window size of W21 and a font size of F21, and W3 has a window size of W31 and a font size of F31. Application program 1 with application number 1 corresponds to W2, and application program 2 with application number 2 corresponds to W3. Further, the priority order data corresponding to application number 1 is A, and the priority order data corresponding to application number 2 is B.

  For example, in this state, when the system control unit 111 notifies the application program corresponding to the application number 1 to end, the drawing unit 112 stores all the data of W2 corresponding to the application number 1 in the management table. Delete from 112A. Further, the drawing unit 112 shifts the application number and the priority order data among the data of W3 corresponding to the application number 2 to W1. Then, the font size F1 of W1 is read from the window data storage unit 115 and stored as the font size data of W1 in the management table 112A. The drawing unit 112 updates the display area based on the management table 112A updated in this way. As a result, the window of the application program 1 corresponding to the application number 1 is spread over the entire display area.

  Alternatively, when the system control unit 111 notifies that the application program 3 corresponding to the application number 3 is activated in the state of the management table 112A illustrated in FIG. 5, the drawing unit 112 sets the management table 112A as follows: Update to

  Application number 3 and priority data corresponding to application number 3 are stored in the corresponding area of W4. Application number 1 and priority data corresponding to application number 1 are stored in the corresponding area of W5. Application number 2 and priority data corresponding to application number 2 are stored in the area corresponding to W6. Delete data of W2 and W3.

  Thereby, the application program 3 to be newly activated is associated with W4. Also, the already started application programs 1 and 2 are associated with W5 and W6.

  Further, window sizes of W4, W5, and W6 are defined. At this time, the window size of W4 corresponding to the newly started application program 3 is set to the largest size regardless of the priority order data. For W5 and W6 corresponding to two application programs that are already running, which of the larger window sizes is determined by the priority order data. For example, if the priority of the application program 1 is higher than that of the application program 2, the window size is W4> W5> W6.

  Then, window data corresponding to such a relationship is selected from the table 115B and set in the window size portion of the management table 112A. Also, font size data corresponding to the set window data is selected from the table 115B and set in the font size portion of the management table 112A. The drawing unit 112 updates the display area based on the management table 112A updated in this way. As a result, the window W4 of the application program 3 is located at the upper stage of the display area, the window W5 of the application program 1 is located at the middle stage, and the window W6 of the application program 2 is located at the lower stage, and the entire display area is indicated by W4 to W6. Will be occupied.

  If the application program 1 is terminated in a state where the application programs 1 to 3 are activated as described above, the application number and the priority order data are W2 among the data of W4 corresponding to the application number 3 of the management table 112A. And the application number and priority data among the data of W6 corresponding to the application number 2 are shifted to W3. After that, all the data of W4 to W6 are deleted. Which of the window sizes W2 and W3 is increased depends on the priority data of W2 (in this case, the priority data of application program 3) and the priority data of W3 (in this case, the priority data of application program 2). Determined by. Further, window data corresponding to the determined window size is set, and font size data corresponding to the window data is set. As a result, the window W2 of the application program 3 is located in the upper part of the display area, the window W3 of the application program 2 is located in the lower part, and the entire display area is occupied by W2 and W3.

  The system control unit 111 and the drawing unit 112 are functions realized by the CPU 101 and the RAM 103 illustrated in FIG. The application storage unit 113, the priority order storage unit 114, and the window data storage unit 115 are functions realized by the ROM 102 illustrated in FIG.

  FIG. 6 is a diagram illustrating a specific example of a window displayed in the display area of the first display unit 14. FIG. 6A shows a state where a window 501 for displaying a television broadcast is displayed in the entire display area. The window 501 is divided into a TV screen area 501A and an operation guidance area 501B. In the operation guidance area 501B, for example, operation guidance indicating how to perform channel switching operation, volume operation, etc. using the function button group 6 of the mobile phone 1 is displayed.

  FIG. 6B shows the relationship between a window 502 and a window 501 that are newly displayed when a mail or other application program is started in the display state of FIG. 6A. The newly displayed window 502 is displayed in a larger size than the window 501. On the other hand, the size of the window 501 is reduced. Further, the display object itself in the TV screen display area 501A is also reduced and displayed. Further, the operation guidance area 501B is not visible on the screen of the first display unit 14. However, the operation guidance area 501B can be displayed on the screen by performing an operation of raising the scroll bar 501C upward.

  FIG. 6C shows the relationship between the window 503 newly displayed when another application program is started in the display state of FIG. 6B and the windows 502 and 503. The newly displayed window 503 is displayed in a larger size than the windows 501 and 502. On the other hand, the sizes of the windows 501 and 502 are reduced. Furthermore, the display objects themselves in the windows 501 and 502 are also reduced and displayed. Further, the operation guidance area 501B is not visible on the screen of the first display unit 14.

  Comparing FIG. 6B and FIG. 6C, the character in the window 502 of FIG. 6C is changed to a size smaller than the character in the window 502 of FIG. 6B. I understand that.

  When the window 503 is closed in the display state shown in FIG. 6C, for example, the state returns to the state shown in FIG. However, when the priority order data of the application program corresponding to the window 501 shows a higher priority order than the priority order data of the application program corresponding to the window 502, the size of the window 501 is larger than that of the window 502.

  When the window 502 is closed in the display state shown in FIG. 6B, the state returns to the state of FIG. Thus, when the window is open, the entire display area of the first display unit 14 is occupied by the window. When one of the plurality of windows is closed, the remaining windows are automatically expanded to the closed window portion.

  FIG. 7 is a diagram showing various specific examples of window patterns applicable as the present embodiment. (A-1) is a state in which the window 14A of the application program 1 is open. (A-2) is a state when the application program 2 is activated in that state. The window 14B of the application program 1 is located in the upper stage, and the window 14C of the application program 2 is located in the lower stage. (A-3) is a state when the application program 2 is terminated in this state. As a result of terminating the application program 2, it returns to the same state as (A-1).

  (B-1) is a state in which the window 14B of the application program 1 and the window 14C of the application program 2 are open. (B-2) is a state when the application program 3 is started in that state. The window 14D of the application program 1 is located in the upper stage, the window 14E of the application program 2 is located in the middle stage, and the window 14F of the application program 3 is located in the lower stage. (B-3) is a state when the application program 2 is terminated in this state. As a result of terminating the application program 2, it returns to the same state as (B-1).

  (C-1) is a state in which the windows of the application programs 1 to N are open. (C-2) is a state when the application program N + 1 is started in this state. (C-3) is a state when the application program N + 1 is terminated in this state. As a result of ending the application program N + 1, it returns to the same state as (C-1).

  (D-1) is a state in which the window 14X of the application program 1 and the window 14Y of the application program 2 are open. In this example, the direction in which the two windows divide the display area of the first display unit 14 is different from the other examples. (D-2) is a state when the application program 3 is activated in that state. The window 14Z of the application program 1 is located on the upper stage, the window 14X of the application program 2 is located on the left side of the lower stage, and the window 14Y of the application program 3 is located on the right side of the lower stage. (D-3) is a state when the application program 3 is terminated in this state. As a result of terminating the application program 3, it returns to the same state as (D-1).

  FIG. 8 is a flowchart for explaining the window processing procedure of the control unit 10 including the drawing unit 112 and the system control unit 111. The control described with reference to FIG. 5 is executed based on the flowchart described below.

  First, it is determined whether or not an application program activation request has been made (S1). If there is an activation request, an application program to be activated is specified (S2). Next, priority order data corresponding to the identified application program is read from the priority order storage unit 114 (see FIG. 5) (S3). Next, the management table 112A (see FIG. 5) is updated based on the newly started application program and the priority order data (S4). Specifically, data such as the number of windows, window size, and character size is updated. Subsequently, the display screen of the first display unit 14 is updated based on the updated management table 112A (S5). Next, a new application program is activated and displayed in a newly opened window (S6). Thereby, the process ends.

  If it is determined in S1 that there is no activation request, it is determined whether or not there is an application program termination request (S7). If it is determined that there is no termination request, the process ends. When it is determined that there is a termination request, an application program to be terminated is specified (S8). Next, the management table 112A (see FIG. 5) is updated based on the identified application program (S9). Specifically, data such as the number of windows, window size, and character size is updated. Next, the application program is terminated and displayed in the window of the application program to be terminated (S10). Subsequently, the display screen of the first display unit 14 is updated based on the updated management table 112A (S11). Thereby, the process ends.

  As described above, in the present embodiment, when the window is closed, the remaining windows are fully displayed in the display area. Therefore, the window can be viewed on a large screen as much as possible. As a result, the listability is also improved. In addition, by closing the window, it is possible to save the trouble of extending the remaining window to an empty space.

It is also possible to provide a generated program by coding the algorithm shown in FIG. Such a program can be recorded on a computer-readable recording medium and provided as a program product. Note that this type of recording medium is not limited to a CD-ROM, and may be a flexible disk attached to a computer, a CD-ROM, a memory card, or the like. Such a program can also be provided by downloading via a network.
In the above embodiment, one control unit 10 functions as the system control unit 111 and the drawing unit 112. However, the system control unit 111 and the drawing unit 112 may be configured by independent microcomputers.

  Moreover, in this Embodiment, the mobile telephone 1 was mentioned as an example of a display apparatus. However, this embodiment is not limited to this, and can also be applied to various display devices such as a display device of a personal computer and a portable terminal (such as a navigation device) that does not have a call function.

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

It is a perspective view of a mobile phone. It is a figure which shows the state by which the mobile telephone was folded. It is a figure which shows the back surface of a mobile telephone. It is a block diagram which shows the structure of a mobile telephone. It is a functional block diagram for demonstrating the display control function of a control part. It is a figure which shows the specific example of the window displayed on the display area of a 1st display part. It is a figure which shows the various specific examples of the window pattern applicable as this Embodiment. It is a flowchart for demonstrating the window processing procedure of a control part.

Explanation of symbols

  1 cellular phone, 10 control unit, 111 system control unit, 112 drawing unit, 113 application storage unit, 114 priority storage unit, 115 window data storage unit

Claims (7)

Display means having a display area for displaying a window;
Display control means for displaying a window in the display area,
When the display control means closes any of the plurality of windows displayed in the display area, the display control means changes the size of the remaining window displayed in the display area, and the display is performed by the remaining window. A display device that occupies the entire area.   When the display control means opens a new window in the display area in a state where the entire display area is occupied by the window, the display control means changes the size of the already opened window, and the already opened window. The display device according to claim 1, wherein the entire display area is occupied by a new window.   The display device according to claim 2, wherein the display control unit sets a size of a newly opened window to be larger than a size of an already opened window. Font size storage means for storing the font size for each window size;
The display device according to claim 1, wherein the display control unit changes a font size of data displayed in the window when the size of the window is changed. Further comprising window pattern storage means for storing the arrangement pattern of each window when dividing the display area by a plurality of windows according to the number of divisions;
The display control means includes
When one of the three or more windows displayed in the display area is closed, the arrangement pattern of each window corresponding to the number of remaining windows displayed in the display area is read from the window pattern storage means. Arrangement pattern reading means;
The display device according to claim 1, further comprising a dividing unit that divides the display area by each window based on the arrangement pattern of each window read by the arrangement pattern reading unit. The display control means includes
When a new window is opened in the display area in a state where the entire display area is occupied by the window, the arrangement pattern of each window according to the number of windows to be displayed in the display area including the new window Arrangement pattern reading means for reading from the window pattern storage means;
The display device according to claim 2, further comprising a dividing unit that divides the display area by each window based on the arrangement pattern of each window read by the arrangement pattern reading unit. Application program storage means for storing a plurality of application programs;
Priority data storage means for storing priority data indicating whether or not the size of the window used for the application program is made larger than the size of the window used for another application program for each of the plurality of application programs. ,
When the dividing means closes any of the three or more windows displayed in the display area, the priority data of the application program corresponding to each of the remaining windows displayed in the display area; The display device according to claim 5, wherein the display area is divided by each window based on the arrangement pattern of each window read by the arrangement pattern reading unit.

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