JP3957693B2 - Multi-window display type portable terminal device - Google Patents

Description

  The present invention relates to a mobile terminal device such as a mobile phone and a PHS, and more particularly to a multi-window display type mobile terminal device having functions other than a telephone function such as a camera, a schedule book, and a calculator.

  Conventionally, mobile terminal devices such as mobile phones, PHS, and PDAs have been mainly single-function devices such as telephone calls, but with the recent advancement of IT technology, the number of multifunctional devices has increased, and calculators and schedule books have increased. In addition to the above, a camera function has appeared, and since it is possible to connect to the Internet, information stored outside can be easily used in addition to sending and receiving mail.

  The main unit of the apparatus, a rotating shaft unit equipped with a video camera, a video display unit equipped with a touch panel, and a flip unit equipped with a CCD camera, the rotating shaft unit rotates the apparatus main body unit and the flip unit relative to each other. There is disclosed a portable terminal that includes an opening / closing shaft that can be connected and a rotation shaft that rotates the flip portion in the horizontal direction, and can be used as a video camera with a monitor when the flip portion is opened and rotated in the horizontal direction (patent) Reference 1).

  By displaying different contents on the two displays even if an incoming call is received during the mail creation operation, the user continues the mail composition operation while making a call, and immediately sends the created mail after the call ends. There has been disclosed a mobile phone capable of executing two functions that can be performed in parallel (see Patent Document 2). In addition, in a mobile terminal device that has a mail editing function and can display two or more screens, if there is an incoming call while editing a mail, the mail editing function is maintained and information about the incoming call is displayed on a separate screen from the mail editing screen. A portable terminal device having a display control means is disclosed (see Patent Document 3).

  When the foldable main body casing has an outer surface and an inner surface, display means and an open / close detection means for detecting the open / closed state of the housing, and based on the detection result of the open / close detection means, the inner surface is opened. A foldable portable terminal is disclosed that displays on the display means and displays on the outer display means when the casing is closed (see Patent Document 4).

In addition, a setting screen for making settings related to calls, emails, and cameras is displayed in a multi-window on the LCD monitor, and the color of each window displayed in the multi-window varies depending on the setting screen. By enabling the input keys to be lit in multiple colors and making the lighting color of each input key the same as the color of the active window, a mobile phone that allows the user to recognize the current settings and operations at a glance It is disclosed (see Patent Document 5).
JP 2001-169166 A JP 2002-171317 A JP 2002-344777 A JP 2003-78596 A JP 2003-283635 A

  Although the portable terminal described in Patent Document 1 has a plurality of functions, it has a single display screen and needs to be switched and displayed each time. The mobile phone described in Patent Document 2 has two displays, but the two displays are provided side by side, and one display is assigned a display related to a call, and other displays are used for user operations. Since other display processes according to the assignment are assigned, two or more application screens other than a call cannot be displayed at the same time. In the portable terminal device described in Patent Document 3, two screens are displayed, but one screen is used for mail editing, the other screen is used for displaying information related to incoming calls, and two or more application screens other than calls. Cannot be displayed simultaneously, and the two screens cannot be switched. In the foldable portable terminal described in Patent Document 4, display means are provided on the outer surface and the inner surface of the housing, but only the display device is switched in response to opening and closing of the housing, and two or more application screens can be displayed simultaneously. It cannot be displayed. Since the mobile phone described in Patent Document 5 performs multi-window display on one small screen by switching the screen, two or more application screens cannot be displayed simultaneously.

  An object of the present invention is to provide a multi-window display type portable terminal device that can simultaneously use two applications on a small screen such as a cellular phone without placing a burden on the user.

The multi-window display portable terminal device of the present invention is
An input means having a character input key and a control input key, a display device that performs multi-window display using two display screens simultaneously using two display screens, and an input operation by the input means is one of the two applications Active screen switching means for switching to be effective for each, two virtual screens corresponding to two applications, each output to one of the two display screens, and according to a predetermined input of the virtual screen A memory having a virtual screen management means for selecting an output destination and an active screen is provided . In the first aspect, two display screens are provided back to back in the display device. Display a virtual screen on the display screen displayed on the side where the key is provided. Is switched by switching the output destination by the virtual screen management means, and the display screen displayed on the surface of the display device on which the input key is provided is selected as the active screen by the virtual screen management means. In the second aspect, two display screens are provided on the front and back of the display device, the display device has a rotation unit capable of rotating the display device by at least 180 degrees, and input keys of the display device are provided. Switching the virtual screen to the display screen displayed on the side surface is performed by switching the output destination by the virtual screen management means or by rotating the display device by 180 degrees, and the side on which the input key of the display device is provided The display screen displayed on the screen is selected as the active screen by the virtual screen management means. .

  It has means for communication with the outside, and when the active screen is switched from the active screen to another screen by the active screen switching means, the call is put on hold and the active screen switching means is active. There may be provided means for canceling the call hold setting when the screen is switched from the other screen to the active screen.

  A first housing having a first display screen and a second display screen respectively corresponding to two applications, a second housing having an input key and a display switching button, and a first housing; The first rotation axis for folding the second casing toward the surface on which the input key is arranged is orthogonal to the first rotation axis capable of rotating the upper casing at least 180 degrees on the first rotation axis. A biaxial rotating unit having a second rotating shaft, an open / close detection sensor for detecting a folded state, a rotation detecting sensor for detecting a rotating state of the second rotating shaft, a wireless communication unit for controlling communication with the outside, Select two virtual screens corresponding to two applications, each output to one of the two display screens, and a virtual screen output destination according to predetermined inputs from the display switch button, open / close detection sensor, and rotation detection sensor And It may be a mobile phone with a memory having a virtual screen management means for selecting a revertive screen.

  Since the present invention has the above-described configuration, the operation burden when the user uses two applications simultaneously is reduced.

The present invention has the following effects. That is,
The first effect is that the application can be started individually by the multi-window display on the first display screen and the second display screen, so two applications can be displayed simultaneously, such as searching for the arrival time of a train with a browser while composing an email. It can be used.

  The second effect is that switching between the two applications is easy because the display can be switched between the first display screen and the second display screen by simply rotating the upper housing or pressing the changeover switch. It is.

  The third effect is that a wide display area can be secured even in a casing having a small surface area by arranging two screens back to back, and therefore a wide screen display area can be secured even in a small casing.

  Next, an embodiment of a multi-window display portable terminal device to which the present invention is applied will be described in detail with reference to the drawings. FIG. 1 is a schematic perspective view showing a state in which the folding mobile phone according to the embodiment of the present invention is opened and the first display screen is directed to the same surface as the input key, and FIG. 2 is a diagram of the embodiment of the present invention. FIG. 3 is a schematic perspective view showing a state in which the upper casing of the folding mobile phone is rotated around the second rotation axis, and FIG. 3 is the same as the input key when the upper casing of the mobile phone is rotated. FIG. 4 is a schematic perspective view showing a state facing the surface, and FIG. 4 is a schematic view showing a state in which the first display screen of the foldable mobile phone according to the embodiment of the present invention is folded on the lower housing. FIG. 5 is a schematic perspective view showing a configuration of a two-axis rotating unit of a foldable mobile phone, FIG. 5A is a connection relationship between the two-axis rotating unit and a housing, and FIG. FIG. 6 is a schematic partial plan view showing a wiring connection structure in the shaft rotation unit, and FIG. Is a block diagram of a form of folding cellular phone, FIG. 7 is a schematic block diagram illustrating a multi-window display of the embodiment of the present invention. Here, the portable terminal device is described as a foldable mobile phone, but the present invention is not limited to this, and the present invention is widely applied to portable terminal devices having a display screen.

  As shown in FIGS. 1 to 5, the foldable mobile phone according to the embodiment of the present invention is provided with a first display screen 11 and a second display screen 12 on both surfaces of the upper housing 10, respectively. 10 and the lower housing 20 are folded together by providing a first rotating shaft 31 similar to a conventional folding mobile phone used for folding, and a second rotating shaft 32 orthogonal to the first rotating shaft 31. Each of the image display units can be reversed by rotating the housing 10 by 180 degrees, and even when the housing is folded during reception standby, the one image display unit can be made visible. Yes.

  As shown in FIGS. 1 to 5, the foldable mobile phone 1 according to the first embodiment of the present invention has an upper housing 10 and a lower housing 20, and an end portion and a lower portion of the upper housing 10. The end of the housing 20 is connected to be opened and closed by a biaxial rotating unit 30 and the upper housing 10 is independently rotatable. A first display screen 11, a second display screen 12 and a speaker 13 for displaying images are provided on both sides of the upper housing 10, and an antenna 14 is provided on the upper portion of the upper housing 10. On one side of the lower housing 20, an input key 21 and a microphone 25 are provided, and on the side, a display switching button 24 capable of switching display contents between the first display screen 11 and the second display screen 12 is provided. A rotation detection sensor 22 that detects rotation of the upper housing 10 and an open / close detection sensor 23 that detects opening and closing of the upper housing 10 are provided inside. The open / close detection sensor 23 may be a reed switch of the lower housing 20 that is sensitive to the magnetic force of a magnet (not shown) embedded in the upper housing 10 when approaching.

  As shown in FIG. 5A, the biaxial rotating unit 30 used for connecting the upper housing 10 and the lower housing 20 includes an upper housing 10 that performs screen display and a lower housing 20 that performs key operations. The first rotating shaft 31 that opens and closes both housings and the second rotating shaft 32 that rotates perpendicularly to the first rotating shaft 31 and rotates the upper housing 10 around the first rotating shaft 31. Further, the upper housing 10 is rotatable. The electrical connection between the upper housing 10 and the lower housing 20 is the conventional folding cellular phone in the portion of the rotating structure in which the upper housing 10 and the lower housing 20 are folded around the first rotation shaft 31. As shown in FIG. 5B, the flexible cable 122 is used to pass the inside of the cylinder of the lower housing 20 and connect to the relay board 125 in the biaxial rotating unit 30 to enable the folding operation. Yes. In the portion of the structure in which the image display unit of the upper housing 10 is rotated 360 degrees around the second rotation shaft 32, it is fixed on the second rotation shaft 32 of the two-axis rotation unit 30 as shown in FIG. The conductive portion 127 arranged in a ring around the cylindrical portion 126 is connected to the substrate in the lower housing by the flexible cable 122 via the relay substrate 125 by the internal wiring of the cylindrical portion 126, and the upper portion On the housing side, the elastic contact portion 123 in contact with the conductive portion 127 is connected to the first display screen 11 and the second display screen 12 in the upper housing via the relay substrate 124. The rotation detection of the rotation detection sensor 22 can also be performed using this mechanism.

  Next, the operation of the multi-window display type portable terminal device of the present invention will be described with reference to the block diagram of FIG. The mobile phone 1 includes a first display screen 11, a second display screen 12, a speaker 13, an antenna 14, an input key 21 provided on the lower housing 20, an open / close detection sensor 22, and a rotation detection sensor. 23, a display switching button 24, a microphone 25, a CPU 41 provided inside the lower housing 20, a key switch input circuit 42 for transmitting input information from the input key 21, a memory 43, and a wireless unit 44.

  The wireless unit 44 is connected to the speaker 13, the antenna 14, and the microphone 25 to control communication with the outside. The CPU 41 is a central processing unit for performing overall control, and receives information from the key switch input circuit 42, the open / close detection sensor 22, the rotation detection sensor 23, and the display switching button 24, and exchanges information with the memory 21. Then, a predetermined screen is output to the first display screen 11 and the second display screen 12.

  The memory 43 is a non-volatile memory that stores programs and various setting information, and a volatile memory that temporarily stores information read from the non-volatile memory, calculation results, screen data created for output, etc. It consists of. FIG. 7 shows a configuration in the volatile memory which is a characteristic part of the embodiment of the present invention. The memory 43 includes a first virtual screen management area 61 and a second virtual screen management area 62, and a first virtual screen 63 and a second virtual screen 64, and the first virtual screen 63 and the second virtual screen. 64 has a role of an output buffer to the first display screen 11 and the second display screen 12.

  In each of the virtual screen management areas 61 and 62, the virtual screens 63 and 64 are associated with the two display screens 11 and 12 and the logical screens are associated with each other by the display switching signal 51 input via the CPU 41. At the same time, the management information about the processing table when the input event of various keys such as numeric keys and menu keys occurs is recorded.

  The first display screen 11 and the second display screen 12 in FIG. 7 correspond to the first display screen 11 and the second display screen 12 in FIG. 1, and are display devices arranged back to back in the upper housing 10. Here, the first logical screen and the second logical screen are defined for easy explanation. The first display screen 11 and the second display screen 12 are individual physical display devices and rotate with respect to the lower casing 20, whereas the first logical screen is an inner screen when the casing is closed. That is, when it is opened, it is the surface on the same side as the surface on which the input key 21 of the lower housing 20 is disposed, and the second logical screen is a screen on the outside. Accordingly, the relative relationship between the display screen and the logical screen is changed by the rotation of the upper housing 10 on the second rotation shaft 32 by the two-axis rotation unit 30. Here, the first logical screen, that is, the surface on the same side as the input key 21 of the lower housing 20 in the opened state is a variety of inputs such as data keys used for inputting numbers and characters and menu keys used for selecting functions. It is assumed that the operation by the key 21 is effective, and the surface of the first display screen 1 and the second display screen 2 facing the same side as the various keys of the lower housing, that is, the first logical screen is active. It becomes a screen.

  The open / close detection sensor 22 generates a case open / close detection signal of the foldable mobile phone 1. The rotation detection sensor 23 detects the rotation of the upper housing 10 around the second rotation shaft 32 of the two-axis rotation unit 30 and generates a display switching signal for the first display screen 11 and the second display screen 12. The display switching button 24 is a button for switching display contents of the first display screen 11 and the second display screen 12 to each other at the same position, and is arranged at a position where it can be pressed even in a folded state. In other words, the display screen on the side operated by the input key 21 is switched by rotating the upper housing 10 by 180 degrees, so that the screen currently displayed on the first display screen 11 is physically displayed as the second display, for example. It is possible to switch to the screen currently displayed on the screen 12, and by pressing the display switching button 24, only the screen content currently displayed on the first display screen 11 is electrically electrically connected to the second display screen. 12 can be switched to the screen content displayed in FIG. The input key 21 is composed of a button switch group including a numeric key used for inputting numbers and characters, a control key used for function selection, and the like, and the key switch input circuit 42 sends input information from the input key 21 to the CPU 41. Output.

  FIG. 8 is a flowchart showing the flow of the display switching process in the interrupt process using the multi-window according to the embodiment of the present invention. Of course, there are various ways of implementing the present invention, and the method shown in the flowchart of FIG. 8 is merely an example.

  To make it easier to understand the content, when a mobile phone user is creating a new mail on the first logical screen, the time when the train on which he / she is currently traveling arrives at the target station by connecting to the Internet The processing operation for checking is added as a specific example in the description of the flowchart.

  As a premise, the first display screen 11 is displayed on the first logical screen which is the active screen, and the mail creation screen is displayed on the first display screen 11 by the output of the mail creation screen data of the first virtual screen 63. The second display screen 12 is displayed on the second logical screen, and the menu selection screen is displayed by outputting the data of the menu selection screen of the second virtual screen 64 to the second display screen 12. It shall be.

  When the display switching button 24 on the side of the casing is pressed while the mail creation screen is active, an interrupt process is activated by a signal from the button, and the following display switching process is performed.

  In FIG. 8, the output of the first virtual screen 63 has been output to the first display screen 11 so far as a mail creation screen, and the output of the second virtual screen 63 has been output to the second display screen 12 for menu selection. When the display switching button 24 is pressed on the assumption that the first virtual screen 63 is active and is the first logical screen (step S11Y), the output destinations in the virtual screen management areas 61 and 62 are first displayed. The display screen is switched, and the output destination of the mail creation screen of the first virtual screen 63 is changed from the first display screen 11 to the second display screen 12 in the first virtual screen management area 61 of FIG. In the area 62, the output destination of the menu selection screen of the second virtual screen 64 is changed from the second display screen 12 to the first display screen 11 (step S12), and the process proceeds to step S14.

  The interruption process is also performed by rotating the upper housing 10 by 180 degrees. As shown in FIG. 5, the foldable mobile phone according to the present invention includes a biaxial rotating unit 30 that couples the upper casing 10 and the lower casing 20 at the center of the casing, and the first rotation for opening and closing the casing. The upper casing 10 can be rotated around the second rotation shaft 32 by hand by the second rotation shaft 32 that intersects the shaft 31 perpendicularly. As a result, when the upper casing 10 having the first display screen 11 and the second display screen 12 is rotated, the logic signal is inverted every time the rotation detection sensor 22 installed near the biaxial rotation unit 30 rotates 180 degrees. Will occur. The CPU 41 activates the interrupt process by the displacement of the logic signal from the rotation detection sensor 23 (step S13Y).

  If the display switching button 24 is not pressed in step S11, the process proceeds to step S13 (step S11N). If the rotation detection sensor 23 detects the rotation of the upper housing 10 by 180 degrees, the process proceeds to step S14 (step S13Y), and the rotation detection sensor 23 If the rotation of the upper housing 10 is not detected (step S13N), the process returns to step S11 and repeats the operation.

  When the rotation detection sensor 23 detects the rotation of the upper housing 10, the first display screen 11 that has been the output destination of the first virtual screen 63 of the mail creation screen so far physically moves to the second logical screen side. Since the second display screen 12 that is the output destination of the second virtual screen 64 of the menu selection screen physically moves to the first logical screen side, the displayed screen is the same as the output switched in step S12. . In any case, the active screen is not switched before proceeding to step S14.

  In step S14, if the active screen is in a call (step S14Y), call holding is set and displayed on the screen, or a melody is played, and the process proceeds to step S18 (step S15), as in this specific example. If the active screen is not in a call (step S14N), the process proceeds to step S16. If the inactive screen is in a call hold (step S16Y), the call hold setting is canceled and the process proceeds to step S18 (step S17). If the inactive screen is not on hold as in the specific example, the process directly proceeds to step S18 (step S16N).

  In step S18, the active screen in the virtual screen management areas 61 and 62 is switched to a screen that is newly displayed on the first logical screen, in this example, the first display screen 11 whose display is switched by the display switching button, or the upper part. The second virtual screen 64 that is the image output source to the second display screen 12 after the rotation of the housing is changed to active, and the process proceeds to step S19.

  In step S19, the open / close detection sensor 22 detects the open / closed state of the housing. When the housing is open as in this example (step S19N), the active screen data, in this example, the second virtual screen 64 is displayed. Transfer of data to the first logical screen is started (step S20), and interrupt processing is completed by starting transfer of inactive screen data, in this example, data of the first virtual screen 63 to the second logical screen. (Step S21). If the casing is closed (step S19Y), transfer of inactive screen data, in this example, data of the first virtual screen 64 to the second logical screen is started (step S22). If the process is not finished, the process returns to step S11 to repeat the operation (step S23N). If the process is finished (S23Y), the process is finished.

  FIG. 9 shows the above operation as a screen transition of the display screen. First, when the display switching button 24 is pressed while the active screen of the first display screen 11 is the mail creation screen 71, the screen is switched to the menu selection screen 72 by the procedure of the display switching process in steps S12, S18, and S20, and then the active screen is activated. You can select a browser from the menu item and connect to the Internet. After confirming the arrival time of the train on the display screen 73 searched via the Internet, pressing the display switching button 24 again causes the active screen to be sent from the train arrival time confirmation screen 73 by the procedure of the display switching process in steps S12, S18 and S20. The creation screen 71 can be returned.

  Next, the processing operation of steps S14 to S17 when the display switching button is pressed during a call with the other party will be described with reference to FIGS.

  In FIG. 8, when the display switching button 24 is pressed during a call with the other party, the CPU 41 confirms that the active screen switched in step S14 is the busy screen through the display switching process in step S12. After discrimination (step 14Y), call hold setting is set (step S15). When returning to the call again, the display switching button 24 is pressed again to return the call screen to the active screen through the display switching process in step S12, and the active screen switched in step S12 indicates that the call is on hold. After the CPU 41 determines (step 16Y), the call hold setting is canceled (step S17).

  With this operation, for example, when it is desired to check the schedule of the day with a schedule book provided in the mobile phone during a call with the other party, the display switching button 24 is pressed during the call, so that the steps S12, S18, and S20 are performed. The active screen is switched from the in-call screen 81 to the menu selection screen 82 by the procedure of the display switching process, and at the same time, the call hold setting can be set. After that, a schedule book is selected from the menu selection items that have become active, and after confirming today's schedule on the display screen 83, the display switching button 24 is pressed again to activate the active screen through the procedure of the display switching process in steps S12, S18, and S20. Is switched from the confirmation screen 83 of the schedule book to the in-call screen 81, and the call hold setting is canceled in step S17.

  During a call on the active screen, when the call screen 81 is switched to the menu selection screen 82, the call is automatically set to hold, so that it is possible to clearly indicate that the call is on hold by sending a hold sound to the other party. The schedule book function can be used on the active screen without making the other party uncomfortable due to noise or the like.

  The above is the operation when the housing is in the open state, but when the CPU determines that the housing is in the closed state in step S19 of FIG. 8 (step S19Y), only the data on the inactive screen is displayed. 2 is transferred to the logical screen (step S22). This screen can be switched to other virtual screen data by pressing the display switching button 24. That is, any screen can be viewed even when the housing is folded. No screen display is performed on the inner first logical screen.

  In the embodiments to which the present invention can be applied so far, the case of switching the screen of the multi-window display using two screens as an example of a foldable mobile phone has been described. However, the present invention is not limited to a foldable mobile phone. This is equally applicable to any portable terminal device such as a PDA or a PDA, and is a portable terminal device in which two display screens are displayed on the same surface instead of being provided on both sides of the housing. However, if there are two screens and devices necessary for display switching such as buttons, switches, sensors, and jog dials, the multi-window display screen switching of the present invention is applicable.

  Since the application can be started individually by the multi-window display of the first display screen and the second display screen, two applications can be displayed and used simultaneously, and many applications can be performed.

  As one application example, a touch panel can be used as an input device that generates a display switching signal. For example, when a user of a mobile phone is creating a new mail on the active screen and wants to check the meaning of words in the dictionary installed in the mobile phone, a display switching signal is generated by touching a specific part of the mail creation screen with a finger. The dictionary can be selected and used from the menu selection screen displayed by switching. After using the dictionary, the user can return the active screen from the dictionary screen to the mail creation screen by touching a specific portion with a finger again.

It is a typical perspective view which shows the state which opened the folding type mobile telephone of embodiment of this invention, and orient | assigned the 1st display screen to the same surface as an input key. It is a typical perspective view which shows the state which rotates the upper housing | casing of the foldable mobile telephone of embodiment of this invention centering on a 2nd rotating shaft. It is a typical perspective view which shows the state which rotated the upper housing | casing of the mobile telephone and faced the 2nd display screen to the same surface as the input key. It is a typical perspective view which shows the state which folded the 1st display screen of the folding type mobile telephone of embodiment of this invention on the lower housing | casing toward the outer side. It is a schematic diagram which shows the structure of the biaxial rotation unit of a folding-type mobile phone. (A) is a typical perspective view which shows the connection relation of a biaxial rotating unit and a housing | casing. (B) is a typical partial top view which shows the wiring connection structure in a biaxial rotating unit. It is a block block diagram of the foldable mobile phone of the embodiment of the present invention. It is a typical block diagram for demonstrating the multiwindow display of embodiment of this invention. It is a flowchart showing the flow of the display switching process in the interruption process using the multi-window according to the embodiment of the present invention. It is a transition diagram of a screen displayed on an active screen when display switching is performed during a non-call in one embodiment of the present invention. FIG. 6 is a transition diagram of screens displayed on an active screen when display switching is performed during a call in an embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mobile phone 10 Upper housing | casing 11 1st display screen 12 2nd display screen 13 Speaker 14 Antenna 20 Lower housing | casing 21 Input key 22 Rotation detection sensor 23 Opening / closing detection sensor 24 Display switching button 25 Microphone 30 2 axis | shaft rotation unit 31 1st Rotating shaft 32 Second rotating shaft 41 CPU
42 Key switch input circuit 43 Memory 44 Radio section 51 Display switching signal 61 First virtual screen management area 62 Second virtual screen management area 63 First virtual screen 64 Second virtual screen 71 Mail creation screen 72, 82 Menu selection screen 73 Train Arrival time confirmation screen 81 In-call screen 83 Schedule screen 122 Flexible cable 123 Elastic contact portion 124, 125 Relay board 126 Cylindrical portion 127 Conductive portion S11-S23 Steps

Claims (5)

An input means having a character input key and a control input key;
A display device that performs multi-window display that can use two applications simultaneously using two display screens;
Active screen switching means for switching so that the input operation by the input means is effective for one of the two applications;
Two virtual screens corresponding to the two applications, each output to one of the two display screens, and a virtual screen for selecting an output destination of the virtual screen and selecting an active screen according to a predetermined input And a memory having management means,
In the display device, the two display screens are provided on the back and back of each other, and the output of the virtual screen to the display screen displayed on the surface of the display device where the input keys are provided is provided. Switching is performed by switching the output destination by the virtual screen management means, and the display screen displayed on the surface of the display device where the input keys are provided is the active screen by the virtual screen management means. Ru is selected as, multi-window display type portable terminal device. An input means having a character input key and a control input key;
A display device that performs multi-window display that can use two applications simultaneously using two display screens;
Active screen switching means for switching so that the input operation by the input means is effective for one of the two applications;
Two virtual screens corresponding to the two applications, each output to one of the two display screens, and a virtual screen for selecting an output destination of the virtual screen and selecting an active screen according to a predetermined input And a memory having management means,
Said two of said display screen at a display device is provided on the front and back with back to back with each other, before SL has a rotation unit which can rotate at least 180 degrees display device, provided with the input keys of the display device The switching of the virtual screen to the display screen displayed on the surface of the display side is performed by switching the output destination by the virtual screen management means or by rotating the display device by 180 degrees, and the display device the display screen displayed on the surface of the side which is provided with an input key, Ru is selected as the active screen by the virtual screen management unit, multi-window display type portable terminal device. The multi-window display type portable terminal device according to claim 1, further comprising means for communicating with the outside. When the active screen is switched from the active screen to another screen by the active screen switching unit, the active screen is switched from the other screen to the active screen. The multi-window display type portable terminal device according to claim 3 , further comprising means for canceling the call hold setting when the screen is switched. A first case in which a first display screen and a second display screen respectively corresponding to two applications are arranged on both sides;
A second housing having an input key and a display switching button;
A first rotation shaft for folding the first housing toward a surface of the second housing on which the input key is disposed, and the upper housing is rotated at least 180 degrees on the first rotation shaft. A biaxial rotating unit having a second rotating shaft orthogonal to the first rotating shaft capable of:
An open / close detection sensor for detecting the folded state;
A rotation detection sensor for detecting a rotation state of the second rotation shaft;
A wireless communication unit for controlling communication with the outside;
Two virtual screens corresponding to the two applications, each output to one of the two display screens, and the virtual screen according to predetermined inputs from the display switching button, open / close detection sensor, and rotation detection sensor The multi-window display portable terminal according to any one of claims 2 to 4 , wherein the portable terminal comprises a memory having a virtual screen management means for selecting an output destination and an active screen. apparatus.

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