KR101522401B1 - Mobile Terminal for connection with external device, and method for changing screen image thereof - Google Patents

Abstract

A mobile terminal and a screen changing method which are docked and connected to an external device are disclosed. A method of changing a screen in a portable terminal includes receiving an undocking signal according to docking separation with an external device, outputting a warning message indicating that data may be lost due to docking separation, Updating the currently set value as system environment setting information of the portable terminal to a value corresponding to the display device information of the portable terminal, and displaying the value corresponding to the display device information of the portable terminal Transferring a configuration setting information change event notifying the change of the system configuration information to the executing application or re-starting the screen of the running application so that the screen layout to be displayed can be reconfigured.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a mobile terminal and a method for changing a screen,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable terminal and a driving method thereof, and more particularly, to a method of changing a screen based on display device information of an external device when the portable terminal is docked with an external device.

2. Description of the Related Art As semiconductor and wireless communication technologies are gradually developed, a mobile terminal has various additional functions such as a camera, MP3, Internet, game, etc. in addition to a basic phone call function. In recent years, smartphones having enhanced functions such as these have begun to be widely used. Accordingly, various application programs that can be used in smart phones are being developed.

However, since the portable terminal has to consider portability and mobility, there is a limit to the size of the terminal, and accordingly, the size, resolution, and speaker performance of the screen are also limited.

In the prior art, a device (a so-called docking station) capable of connecting a portable terminal to a notebook computer or a computer has been developed in order to utilize data stored in the portable terminal, sound file, content, etc. in a better use environment. Data, sound file, and contents stored in a portable terminal in a notebook computer or the like have been output and used with a larger screen and a speaker with a good performance.

However, such a method does not support the automatic change to the DPI value corresponding to the display device information of the docked external device while the portable terminal is being run-time. Accordingly, since the image signal corresponding to the DPI value of the display of the portable terminal is simply enlarged and outputted by the method of image scaling through the display screen of the external device docked and connected with the portable terminal, And the size can not be fully utilized.

KR 0313581 B1 Oct. 22, 2001

The present invention provides a portable terminal and a driving method thereof that can provide an optimal use environment when the portable terminal is docked and connected to an external device.

In addition, when a docking connection is established between a portable terminal and an external device, a screen image in which a DPI, a screen size, and a screen output basic direction are changed adaptively according to display device information of the external device is displayed on a display screen of an external device A method and an apparatus that can be output.

In addition, the present invention provides a portable terminal capable of reconfiguring a screen layout corresponding to display device information of a docked connected external device while the portable terminal is being run-time, and a screen changing method thereof.

According to an aspect of the present invention, a method of changing a screen in a mobile terminal that is docked and connected to an external device is disclosed.

A method of changing a screen in a portable terminal according to an exemplary embodiment of the present invention includes receiving a docking signal in accordance with docking separation with the external device, outputting a warning message indicating that data may be lost due to the docking separation Receiving a confirmation input for the warning message, updating the presently set value as the system configuration information of the portable terminal to a value corresponding to the display device information of the portable terminal, The environment setting information change event notifying the change of the system environment setting information to the running application so that the screen layout to be displayed may be reconfigured by reflecting the value corresponding to the display device information of the portable terminal, The running application And a step of re-driving the screen.

According to another aspect of the present invention, a portable terminal is docked and connected to an external device.

A portable terminal according to an embodiment of the present invention includes a docking interface unit; Docking agent; And an application framework, wherein when the docking signal is received due to the docking separation with the external device through the docking interface unit, the docking agent transmits a warning message indicating that data may be lost due to the docking separation And requests the application framework to update the value corresponding to the display device information of the portable terminal when the confirmation input for the warning message is received, A setting unit configured to update a value currently set as the setting information to a value corresponding to the display device information of the portable terminal and to display a screen layout to be displayed by reflecting an application running on the portable terminal, ) Be so, to drive the material passes the system configuration information, the configuration information change event to notify a change in the application in the execution or display of the application being run.

According to the embodiments of the present invention, it is possible to provide an optimal use environment when the portable terminal is docked and connected to an external device.

In addition, according to the embodiment of the present invention, when a docking connection is established between a portable terminal and an external device, a screen image in which DPI, screen size, basic direction of screen output, etc. are adaptively changed in accordance with display device information of the external device, Can be output through the display screen of FIG.

According to the embodiment of the present invention, the screen layout can be reconfigured according to the display device information of the docked external device while the mobile terminal is being run-time.

1 is an example of a block diagram of a portable terminal capable of executing a screen changing method according to an embodiment of the present invention.
2 is an example of a block diagram of a docking device.
3 is an example of an external perspective view of the docking device of Fig.
4 is a diagram illustrating a configuration of a docking interface unit;
5 and 6 are flowcharts for explaining a DPI changing method in a mobile terminal combined with a docking device according to an embodiment of the present invention.
7 is a view illustrating a display screen of a portable terminal to which a warning message is output;
8 is a diagram illustrating the architecture of an Android OS as an example of an operating system installed in a portable terminal.
9 is a diagram showing an example of a DPI determination table;
10 and 11 are diagrams for explaining a DPI changed screen layout according to an embodiment of the present invention;
12 is a view for explaining an exception handling method according to an embodiment of the screen changing method of the present invention.
13 is a view for explaining an exception handling method according to another embodiment related to the screen changing method of the present invention.

While the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and similarities. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. In addition, numerals used in the description of the present invention are merely an identifier for distinguishing one component from another.

Also, in this specification, when an element is referred to as being "connected" or "connected" with another element, the element may be directly connected or directly connected to the other element, It should be understood that, unless an opposite description is present, it may be connected or connected via another element in the middle.

In this specification, the portable terminal may include a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), navigation,

Hereinafter, the present invention will be described in detail with reference to the embodiments of the present invention with reference to the accompanying drawings. Various elements such as a DPI, a screen size, and a screen output basic direction exist as screen change elements that can be applied to the screen change method in the mobile terminal according to the present invention. However, for the sake of conciseness and convenience of explanation in the present specification, among the screen changing methods according to the embodiment of the present invention, mainly the DPI will be mainly described. However, those skilled in the art will appreciate that changes in the screen size and screen output basic direction can be handled in the same manner as in DPI change. It will also be appreciated by those skilled in the art that, at this time, the change of the screen size and the change of the screen output basic direction can be performed simultaneously with the DPI change.

[Description of FIG. 1]

FIG. 1 is an example of a block diagram of a mobile terminal in which a screen changing method according to an embodiment of the present invention can be executed. And FIG. 4 is a diagram illustrating a configuration of a docking interface unit.

Hereinafter, an example of a mobile terminal capable of executing the screen changing method of the present invention will be described with reference to FIG. 4, with reference to the block diagram of FIG.

Referring to FIG. 1, a mobile terminal 100 that is coupled with a docking device according to an embodiment of the present invention includes a wireless communication unit 110, an A / V input unit 120, a user input unit 130, a sensing unit An external storage unit 155, an image output unit 160, an audio output unit 165, a docking interface unit 170, a control unit 180, an image processing unit 140, an internal storage unit 150, And a power supply unit 190. The power supply unit 190 may include a battery for charging the terminal.

However, some of the components in FIG. 1 may not necessarily be necessary components necessary for the implementation of the present invention. Also, according to the embodiment, the mobile terminal 100 may include more components Of course it is possible.

Hereinafter, the components will be described in order.

The wireless communication unit 110 performs a wireless communication function between the portable terminal 100 and the wireless communication system or between the portable terminal 100 and another terminal. According to an embodiment of the present invention, the portable terminal 100 may be a mobile communication terminal, and in this case, the wireless communication unit 110 may include a mobile communication module. In addition, the wireless communication unit 100 may include a communication device such as a short-range wireless communication module, a wireless Internet module, a broadcast receiving module, a GPS receiving module, or the like depending on the type of portable terminal.

Also, although the mobile terminal 100 is exemplified as including a device for wireless communication such as a mobile phone or a smartphone, a mobile terminal docked with an external device according to the present invention must necessarily include a wireless communication device And may be a terminal including a wired communication device. In some cases, the terminal may not support the communication function.

The A / V input device 120 is for inputting audio signals and / or video signals, and may include a camera, a microphone, and the like.

The user input unit 130 is a user interface for receiving various commands from a user, and there is no particular limitation on the implementation method thereof. For example, the user input unit 130 may include a keypad input device and / or a touch input device such as a touch pad, a touch screen, and the like.

The sensing unit 135 includes various sensors such as an acceleration sensor, a proximity sensor, a contact sensor, and the like, thereby enabling the additional function / operation of the portable terminal 100 to be implemented.

The image processing unit 140 performs conversion / processing on image signals or data. Particularly, in the embodiment of the present invention, when the portable terminal 100 and the docking device 200 are docked, the image processing unit 140 performs image processing and signal conversion processing on the image data to be transmitted to the docking device 200 And so on.

The internal storage unit 150 and the external storage unit 155 are used as data storage locations of the portable terminal 100. The internal storage unit 150 may be implemented as a RAM, an SDRAM, a flash memory, or the like And the external storage unit 155 may be implemented as an SD card, a USB memory, or the like. Particularly, according to the embodiment of the present invention, the docking device 200 in the docked state can also function as the external storage unit 155. According to an embodiment of the present invention, the following data may be stored in the internal storage unit 150 and the external storage unit 155.

The video output device 160 may be implemented by a liquid crystal panel, AMOLED, or the like, and the audio output device 165 may include a speaker, a receiver, a buzzer, and the like.

The docking interface unit 170 outputs video data from the portable terminal 100 to the docking device 200 and audio signals and outputs the audio data to the portable terminal 100. [ 100 and the docking device 200. The interface for data input / 1, the docking interface unit 170 may include a video input / output interface 172, an audio input / output interface 174, a data input / output interface 176, and the like. Of course, fewer or more interfaces than the interfaces shown in FIG. 1 may be included according to an embodiment. For example, the docking interface 170 may not be provided with the audio input / output interface 174 according to the design. The docking interface unit 170 may include a power input terminal (not shown) functioning as a passageway for receiving power from the docking device 200 side to the portable terminal 100 while being docked with the docking device 200, ). In addition, it is apparent that the docking interface unit 170 may further include additional interfaces depending on the designing method.

A specific configuration example of the docking interface unit 170 is shown in FIG. 4, the docking interface unit 170 may include a high definition multimedia interface (HDMI) as an interface for video / audio input / output when docking with the docking device 200, An example in which a USB (Universal Serial Bus) standard is used as an interface for standard, data input / output is shown. In such a case, the docking interface unit 170 may be provided with a connector for supporting HDMI and USB, respectively. It should be noted that FIG. 4 is merely an example, and it is a matter of course that various interface configurations are possible, and other video / audio input / output interface methods and data input / output interface methods other than HDMI and USB can be used.

According to the embodiment of the present invention, by connecting with an electronic appliance or an electric appliance having an HDMI or USB terminal through the docking interface 170 provided in the portable terminal 100, / Audio can be output through the video output device and the audio output device of the above electronic appliances or appliances. That is, according to the embodiment of the present invention, the HDMI or USB terminal (not shown) of the docking interface unit 170 can be connected to a general electronic apparatus (for example, a TV, a monitor) It is possible to transmit the screen of the mobile terminal 100 to the corresponding electronic device through the Internet.

The controller 180 controls the overall operation of each component of the portable terminal 100 and the portable terminal 100. In particular, in an embodiment of the present invention, the controller 180 may include a docking agent 182 that performs an operation control function of the portable terminal 100 in accordance with the docking combination with the docking device 200. The docking agent 182 may be implemented as a software program. For example, the docking agent 182 may be implemented in the "application" layer of the OS hierarchical structure of FIG. 8 to implement the corresponding function. In order to execute a screen changing method at the time of docking connection with an external device (the docking device 200 is exemplified in this specification) according to an embodiment of the present invention, an application framework 184 "Application Framework" hierarchy in the structure) can perform certain functions.

An embodiment of the DPI changing method, particularly as a screen changing method in the mobile terminal 100 via the docking agent 182 and the application framework 184 when a docking connection with the docking device 200 is performed will be described below. 5 and Fig. 6, respectively. Prior to the description of FIGS. 5 and 6, for the sake of understanding, an example of the docking device 200 will be briefly described with reference to FIGS. 2 and 3. FIG.

[Description of FIG. 2]

Fig. 2 is an example of a block diagram of a docking device, and Fig. 3 is an example of an external perspective view of the docking device of Fig.

However, as described above, in applying the screen changing method of the present invention, the external device that is docked with the mobile terminal need not necessarily have the same configuration as the docking device 200 described later. That is, the screen changing method according to the embodiment of the present invention can be applied equally or similarly to a general electronic apparatus (for example, a TV, a monitor) having no configuration similar to that of the docking device 200 described later Of course.

Also, here, FIG. 3 illustrates an example of various appearance implementation designs for a docking device, and thus the docking device is not limited thereto.

Hereinafter, the case of Figs. 2 and 3 will be described.

2 and 3, the docking device 200 includes an image output device 210, an audio output device 220, a touch input device 230, a keypad input device 235, a signal processing unit 240, A docking interface unit 250, a storage unit 260, a docking management unit 270, and a power supply unit 280. Here, the video output device 210, the audio output device 220, the touch input device 230, the key pad input device 235, the storage device 260, and the power source 280 may be connected to the portable terminal 100, And the detailed description thereof will be omitted. Hereinafter, the docking interface unit 250 and the docking management unit 270 will be mainly described.

The docking interface unit 250 is physically docked with the docking interface unit 170 of the portable terminal 100 to thereby form a connector for establishing a docking connection relationship between the portable terminal 100 and the docking device 200 connector. The docking interface unit 250 may be in a pair relationship with the docking interface unit 170 of the portable terminal 100. In this case, Configuration (see FIG. 4 above).

That is, the docking interface unit 250 includes a video input / output interface 252 for receiving video data from the portable terminal 100 when docked, an audio input / output interface 254 for receiving audio signals, a portable terminal 100 And an interface 256 for inputting and outputting data. The docking interface unit 250 may further include a docking detection unit (not shown) for detecting a physical docking connection with the mobile terminal 100, a power output unit (or a power supply unit) functioning as a channel for supplying power to the mobile terminal 100 Terminal, not shown), and the like.

3, the docking interface unit 250 may include a terminal insertion unit 251 provided at a specific portion of the terminal insertion unit 251, . That is, according to the embodiment of the present invention, the docking connection between the docking device 200 and the portable terminal 100 is performed by docking the docking interface part 170 and the docking interface part 250 of the two devices, And inserting the mobile terminal 100 into the terminal insertion unit 251 of the device 200. [

3 illustrates a case where the portable terminal 100 is completely inserted into the terminal insertion portion 251. However, according to the design of the terminal insertion portion 251, a portion of the portable terminal 100 The docking interface 170 should be included in the physical docking connection. Although the docking device 200 having the pad type is illustrated in FIG. 3, it is needless to say that the docking device 200 may have a very wide variety of designs (for example, a notebook type rather than a pad type).

The docking management unit 270 generally controls the operation of the docking device 200 when the portable terminal 100 and the docking device 200 are docked. For this, the docking management unit 270 may include a connection setting unit 272, a display control module 274, and an input event processing unit 276 according to an embodiment.

The connection setting unit 272 activates the power state of the docking device 200 (for example, switches from the standby power state to the power-on state) upon the first detection of the docking connection with the portable terminal 100 Can play a role. Further, the connection setting unit 272 can establish a host-device connection with the mobile terminal 100 in the docked state.

Accordingly, in the docking state, the docking device 200 can provide the user with the same working environment as the user working environment (video and audio output environment / data input / output environment, etc.) in the mobile terminal 100.

That is, in the docking state, the screen image of the mobile terminal 100 is output to the screen of the docking device 200. To this end, the docking manager 270 may include a display control module 274. The display control module 274 turns on the screen output of the video output device 210 under the control of the docking management unit 270 and controls the display output of the docking combination received from the portable terminal 100, It is possible to output data on the screen image of the mobile terminal 100 through the image output device 210. [

When an input event (e.g., a touch input event) is received from the input device (refer to reference numerals 230 and 235 in Fig. 4) of the docking device 200 in the docking state, the input event processing unit 276, And generates and transmits an event signal used for controlling the operation of the portable terminal 100 to the portable terminal 100 in accordance with the received input event.

According to an embodiment of the present invention, the docking device 200 may be a kind of dummy that does not operate in stand alone mode (i.e., can not perform any operation / function useful for the user) Device. In the above configuration, the docking device 200 can be equipped with the minimum possible functions (i.e., display control, touch input control, and the like) and minimum hardware configuration so that the existing tablet PC / pad / The same work environment as that of the first embodiment can be realized, and there is an advantage that a lower cost product can be used.

Of course, in another embodiment of the present invention, the docking device 200 may be implemented as a device that can be independently driven by mounting its own OS (referred to as an OS that enables a standalone operation) . For example, when the portable terminal 100 is separated from the portable terminal 100, it can be implemented as an electronic frame, a moving picture / MP3 player, and a docking operation. In such a case, the hardware specification will be required to be higher than the above-described type (a type that can not operate independently).

The portable terminal 100 and the docking device 200 have been described as two devices that are docked according to the embodiment of the present invention. Hereinafter, with reference to FIG. 5 and FIG. 6, The DPI changing method among the screen changing methods in the mobile terminal will be mainly described.

Especially, the case where the portable terminal and the external device (i.e., the docking device) are docked and connected by the physical coupling between the docking interface has been mainly described. However, in the present specification, the term "docking connection" means a docking connection using an intermediary intermediate device, a specific connection cable (for example, an HDMI cable ). In some cases, it is clear that docking according to the wireless connection method (also called wireless docking) may be possible instead of physical connection. Hereinafter, for the sake of convenience and concentration of the description of the present invention, the case where the physical docking coupling is performed will be described with reference to FIG.

5 and 6 are flowcharts for explaining a DPI changing method in a mobile terminal combined with a docking device according to an embodiment of the present invention. Here, FIG. 5 shows an example of a DPI changing method in a portable terminal when a docking connection is made with an external device, and FIG. 6 shows an example of a DPI re-changing method when the docking connection is disconnected (released).

9 is a diagram illustrating an example of a DPI determination table. FIG. 10 and FIG. 11 are views showing an example of an embodiment of the present invention Fig. 8 is a diagram for explaining a DPI-changed screen layout according to Fig. Hereinafter, with reference to FIG. 5 and FIG. 6, a description will be made of a DPI changing method in a portable terminal docked and connected to an external device according to an embodiment of the present invention, with reference to FIGS.

[Description of FIG. 5]

In step S510, the docking agent 182 mounted on the mobile terminal 100 detects a docking connection with the external device.

Here, the following method can be used to detect whether or not a docking connection is established. For example, the docking agent 182 may detect a docking connection with an external device upon receipt of an H / W-like HPD signal through the HOT PLUG DETECT terminal (see FIG. 4) of the HDMI interface. As another example, the docking agent 182 may detect a docking connection through communication with the external device via USB net or ADB (Android Debug Bridge) according to a docking connection with an external device. That is, the docking agent 182 receives a predetermined docking detection signal during a docking connection between the portable terminal and the external device through the H / W scheme or the specific communication scheme as described above, Can be detected.

In this case, the docking agent 182 may control the screen output of the display of the portable terminal 100 to turn off or switch the portable terminal 100 to the sleep mode. When the docking agent 182 is connected by docking, the display path can be controlled (switched) so that an image is output only through the display screen of the docking device without outputting the image through the display screen of the portable terminal.

Thereafter, in step S520, the docking agent 182 receives the display device information (included) mounted on the docking device from the docked external device (hereinafter, referred to as a docking device) to identify the display device specification of the docking device can do.

For example, the display device information may include information on a screen resolution and a screen size. For example, extended display identification data (EDID) contains information on the manufacturer name, product type, EDID version, screen size, luminance, pixel, resolution, etc. The docking agent 182 receives the EDID information, The display device information of the device can be confirmed.

5, the display device information is received from the docking device. However, even if the mobile terminal 100 does not receive the EDID information as described above, it is possible to display the display device information on the display device such as the DPI information, the screen resolution, A method of acquiring information directly may be used. For example, the portable terminal 100 receives or recognizes the device identification information (hereinafter, referred to as a docking device ID) of the docking device 200 and acquires display device information of the device docked and connected thereto That is, confirmation or estimation). To this end, the storage medium in the portable terminal 100 may have associated display device information mapped and stored for each ID of the group of candidate devices capable of being docked with the portable terminal 100. At this time, the mapping information may be managed by the docking agent 182 of the portable terminal 100.

In the manner as described above, when the display device information of the docking device is obtained, in step S530, the docking agent 182 acquires the DPI value corresponding to the received (acquired) display device information.

Here, as a method of acquiring the DPI value corresponding to the display device information of the docking device, the following method can be used. That is, the docking agent 182 determines the DPI value corresponding to the display device of the docking device by referring to the DPI determination table (see FIG. 9) in which DPI values applicable to each screen resolution and screen size are mapped in advance This is an example.

Here, FIG. 9 is a table illustrating the DPI specification required by the Android OS. Referring to FIG. 9, there are a small screen (a screen size is about 3 inches or less), a normal screen (a screen size is about 3 to 4 inches, for example, a smartphone screen size) 7 inch), Extra Large screen (screen size about 7 inches or more), and the screen resolution class.

Accordingly, the docking agent 182 can determine a suitable DPI value for the display device of the docked connected external device by using the DPI determination table as shown in FIG. For example, assume that the mobile terminal 100 has a screen resolution of 800 × 1280 and a screen size of Normal screen, and the docking device has a screen resolution of 800 × 1280 and a screen size of an extra large screen.

9, the DPI suitable for the display device of the portable terminal 100 becomes XHDPI (Extra high DPI) corresponding to 640 × 960, which is a screen resolution close to 800 × 1280 in the Normal screen. 9, the DPI suitable for the display device of the docking device is MDPI (medium DPI) corresponding to 800 × 1280 on the Extra Large screen. In other words, when the screen image of the mobile terminal 100 is distributed to the display screen of the docking device through the docking connection with the docking device, the screen image according to the DPI value suitable for the mobile terminal is displayed on the display device of the docking device It is necessary to spray the reconstructed screen image according to the correct DPI value.

Accordingly, when the portable terminal 100 does not have a docking connection with an external device, the method of changing the DPI in the portable terminal 100 according to an embodiment of the present invention is to change the DPI according to the XHDPI value suitable for the display device of the portable terminal 100 The display image is output through the display device of the docking device, and when the docking connection is established, the screen image is reconstructed according to the MDPI value suitable for the display device included in the docking device, and the reconstructed screen image is transmitted to the docking device via the docking interface . To this end, the docking agent 182 determines the DPI value for the display device of the docked connected external device by referring to the DPI determination table as shown in the table of FIG.

In step S520 and step S530 of FIG. 5, the display device information of the docking device is checked first, and then the display device information of the docking device is displayed using the DPI mapping table as illustrated in FIG. The DPI value is determined based on the case. However, a method of determining the DPI value for the display device of the docking device may be used in a different manner. For example, as described above, when the docking device 182 is docked, the docking agent 182 confirms or recognizes the device ID of the docking device, and then transmits the DPI value mapped to the docking device ID to the display device As shown in FIG. Hereinafter, for convenience and concentration of explanation, the description will be made centering on the case of step S520 and step S530 in FIG.

In step S540, it is determined whether the determined DPI value has a value different from the DPI value of the mobile terminal 100 itself (i.e., whether DPI change is necessary). According to the determination result of step S540, if it is not necessary to change the DPI value, the current screen image data may be transmitted to the docking device as it is (see step S575).

On the other hand, if the determined DPI value (i.e., the DPI value for the display device of the docking device) is different from the currently set DPI value (i.e., the DPI value preset for the display device of the portable terminal) 100 performs steps S550 to S570 for changing the DPI value.

The docking agent 182 requests the application framework 184 to change (update) the DPI value so that the application framework 184 can update the DPI value of the system of the portable terminal 100 Update (modify) the preset DPI value in the system configuration information to the DPI value determined in the previous step.

Then, in step S560, the application framework 184 delivers an environment setting information change event notifying the change of the system environment setting information to the running or execution requested applications. The preference information change event can be the android.intent.action.CONFIGURATION_CHANGED event for the Android OS. In addition, the application framework 184 allows an application that is being executed or requested to be executed through the portable terminal 100 to reconstruct a screen layout to be displayed by reflecting the updated DPI value.

At this time, at least one of the following methods may be used as a method of causing an application that is being executed or requested to execute to reconstruct the screen layout by reflecting the updated DPI value.

In the first method, if the DPI value of the system is changed in accordance with step S550, the application framework 184 directly accesses the user interface components or the activities related to the UI screen of each application in execution , The screen of the running applications can be re-executed to reflect the updated DPI value.

In a second manner, the application framework 184 invokes a configuration information change function (which may be an onConfigurationChanged () function in the case of an Android OS) to allow the running or executing requested application to reflect the updated DPI value by itself You can also redraw the App screen. However, it goes without saying that the detailed operation of the application framework according to the DPI change may be different for each OS.

In a third scheme, upon receiving a request to change the DPI value from the docking agent 182 in accordance with step S550, the application framework 184 obtains a list of currently running applications, The application UI screen can be configured according to the changed DPI value when the applications are re-executed (driven) by the user or by the system.

At this time, an application to be processed may be all applications currently running on the portable terminal 100, but may be applications other than a specific application. Here, a specific application to be excluded from the Process Kill process may be an application for which implementation of the present invention, such as a Call App, a Music App, or the docking agent program or the like, in which maintenance of service continuity is important, have. However, the specific application to be excluded from the Process Kill process may be changed or specified differently depending on the designer or user's choice.

Also, Process Kill process described above may have various modifications depending on the type of OS. For example, before executing a Process Kill in response to a request to change the DPI value, the application framework 184 may execute a particular test application in the foreground for a very short time (e.g., a few milliseconds) By switching an application that was in a state to a background state, the application can make an exception handling such as saving the current state.

If the screen layout to be displayed is configured (or reconfigured) by reflecting the updated DPI value in accordance with the previous step S560, the docking agent 182 updates the DPI value according to the screen layout reflecting the updated DPI value And the video data is transmitted to the docking device through the video input / output interface of the docking interface unit 170.

According to the DPI changing method as described above, when a portable terminal and an external device are connected by docking, a screen layout image according to a DPI value suitable for the display device of the docking device can be outputted through the display screen of the docking device .

An example screen for this is shown in Figs. 10 and 11. Fig. 10 and 11, screens that have been screen-laid out in accordance with HDPI in the portable terminal 100 (refer to the phone in FIG. 10 and FIG. 11) are connected to a docking device Pad) is configured for screen layout according to MDPI. Accordingly, it can be confirmed that the screen image output on the display screen of the docking device is not enlarged as it is on the screen image of the portable terminal 100, but more items are displayed according to the screen size of the docking device.

[Description of Fig. 6]

5, a case has been described in which the DPI is changed to match the display device of the docking device when the portable terminal and the docking device are connected by docking. Hereinafter, a description will be given of the flow of a case where the DPI is changed again to match the display device of the portable terminal when the above docking connection is separated (i.e., released). However, the case of FIG. 6 has a flow similar to that of FIG. 5, and a description overlapping with that of FIG. 5 will be omitted.

In step S610, the docking agent 182 receives the docking signal according to the docking separation with the external device.

In step S620, the docking agent 182 determines whether the specified application is running. Here, the designated application can be set in advance before the portable terminal is released.

In step S630, when the specified application is running, the docking agent 182 maintains the output state of the execution screen of the specified application.

For example, the designated application may be a telephony application. That is, when the mobile terminal is in the docking state with the external device, the mobile terminal is disconnected from the external device in order to receive the call, when the call is received and the telephone application is executed and the telephone application screen is output. Accordingly, the docking agent 182 receives the undocking signal due to the docking separation with the external device. If the docking agent 182 determines that the telephone application is running, Lt; / RTI >

In step S640, the docking agent 182 determines whether the execution of the specified application is terminated.

Upon execution of the designated application being terminated, the docking agent 182 outputs a warning message to the display screen of the mobile terminal in step S650, indicating that data may be lost due to docking separation. That is, when the docking connection is disconnected, the docking agent 182 maintains the output state of the application execution screen designated so that the user can use the designated application without outputting the warning message screen immediately following the docking separation.

For example, the warning message may be output as a pop-up composed of a phrase and an OK button as shown in FIG. 7 is a diagram illustrating a display screen of a portable terminal to which a warning message is output. Here, as shown in FIG. 7, the pop-up in which the warning message is output may occupy the entire screen of the portable terminal or occupy only a part of the screen of the portable terminal according to the implementation.

In the output state of the warning message, the docking agent 182 may block the input of the portable terminal 100. For example, the docking agent 182 may control the user input unit 130 of the portable terminal 100 to be deactivated in addition to the confirmation button on the warning message output screen.

At this time, when an input of a system button that can not control the interruption of input such as a home key occurs, the docking agent 182 instantaneously re-outputs a pop-up for outputting a warning message, You can always control the pop-ups to stay out of the way.

Then, in step S660, the docking agent 182 determines whether the warning message has been confirmed. For example, the user can check the warning message and click the OK button. Alternatively, the user may re-dock and disconnect the docked work after completing the data storage of the job in progress, and if the warning message is displayed, click the OK button. At this time, the docking agent 182 may control the pop-up for outputting the warning message to disappear according to the confirmation input.

In step S670, the docking agent 182 detects a docking connection with the external device in a state where no confirmation input is made.

Accordingly, in step 680, the docking agent 182 stops outputting the warning message. For example, the docking agent 182 may control the pop-up for outputting a warning message to disappear when the user connects the portable terminal and the external device again.

The docking agent 182 then proceeds to step S520 according to the detection of the docking connection with the external device. When the docking connection is established between the portable terminal and the docking device, as described above with reference to FIG. 5, Perform the procedure to change.

In this case, in step S540, the docking agent 182 may determine that the display device information of the external device is a redocking connection instead of the new docking connection, as the display device information currently set in the portable terminal matches. Accordingly, the docking agent 182 controls, in step S575, to transfer the current image data to the docking device.

When the user completes the data storage of the work in progress and then docks off, the process goes to step S610 and subsequent steps are performed.

That is, since the user separates the docking after completing the data storage of the work in progress, the docking agent 182 may output the warning message in step S650, and may perform the subsequent step in step S660 by receiving the confirmation input .

Thereafter, the docking agent 182 releases the docking connection mode in accordance with the docking separation in step S690. Here, the termination of the docking connection mode means to restore the system setting values and the control path that have been changed according to the docking connection.

As part of this process, in step S700, the docking agent 182 requests the application framework 184 to update the DPI value corresponding to the display device information of the portable terminal.

In step S710, the application framework 184 updates the DPI value currently set as the system environment setting information of the mobile terminal (i.e., the DPI value changed in accordance with the docking connection) with the DPI value . Accordingly, the screen layout of currently executing applications is reconstructed again by reflecting the DPI value corresponding to the display device information of the portable terminal. In this manner, the reconstructed screen image is output on the display screen of the mobile terminal in step S720.

In the above description, the DPI value is changed according to the docking connection and the docking with reference to the flowcharts of FIGS. 5 and 6. However, in addition to the DPI value change, the screen size change and the change Of course. The change of the screen size and the change of the screen output basic direction can be made by the system environment setting information changing method as described above.

If the portable terminal 100 has a screen resolution of 800 × 1280 and a screen size of Normal screen and the docking device has a screen resolution of 800 × 1280 and a screen size of Extra Large screen as in the foregoing example, Accordingly, the application framework 184 can change the screen size of the system configuration information to an Extra Large screen corresponding to the docking device.

10, the screen output directions of both the portable terminal and the docking device have both the "longitudinal direction (that is, the portrait direction)" and the "horizontal width direction (that is, the landscape direction)" However, the basic direction of the screen output of the portable terminal 100 and the docking device may be different according to the implementation. For example, in the case of a mobile phone or a smartphone, the longitudinal direction may be the basic direction of the screen output, and in the case of a notebook or a tablet PC, the lateral direction may be the basic direction of the screen output.

Therefore, in such a case, the docking agent 182 acquires information on the screen output basic direction of the display device of the docking device, based on screen resolution information, screen size information, docking device device identification information, and the like of the docking device, The application framework 184 may request the docking device to update the screen output basic direction if the screen output basic direction of the docking device does not match the existing screen output direction of the portable terminal. Accordingly, the application framework 184 not only updates the DPI value, but also updates the screen output basic direction, and then the screen layout of each application can be reconfigured by reflecting the change in the screen output basic direction as described above .

The DPI changing method when the docking connection between the portable terminal 100 and the docking device is performed has been described above. Hereinafter, in applying the DPI changing method according to the above-described embodiments, an exception handling method in a specific situation will be described. The exception handling method to be described later may be applied to a portable terminal in which the above-described DPI changing method is applied to a portable terminal, and the DPI value when the portable terminal operates in a stand- This is to solve the case. Here, a specific case requiring exception processing is exemplified as follows.

For example, this may be the case where a specific App requests display device information to the application framework 184 of the mobile terminal 100. [ In recent years, there are various electronic apparatuses having different screen sizes, DPIs, and screen resolutions of display apparatuses such as mobile phones, tablet PCs, notebooks, etc., and it is a general trend to provide an App or a screen that matches the display apparatus characteristics of each electronic apparatus .

For example, servers providing various applications distinguish applications for a Phone and an App for a Pad from each other, and also provide different interfaces for the applications to be provided according to terminals to which the terminals are connected. For example, when a user accesses a market through a mobile phone (generally, a user accesses through a market app installed in a mobile phone), an interface for downloading the application for Phone is displayed on the screen, The interface for downloading the Pad App is displayed on the screen.

Assuming the case of a specific application that operates differently according to the display device information of the portable terminal with the above-described reason (for example, the application for the Phone and the application for the Pad), when the present invention is applied, When the terminal is operated as a standalone terminal, an interface corresponding to the display device information of the portable terminal is displayed, and an interface corresponding to the display device information of the docking device is displayed in the docking connection state. It will be more natural. However, there is a case where the dynamic interface is not provided in real time according to the change of the display device information of the portable terminal according to the docking connection depending on the server. Various embodiments of an exception handling method applicable to a mobile terminal for smooth interoperation with such a server will be described.

[Description of FIG. 12 - Exception Handling Method 1]

12 is a view for explaining an exception handling method according to an embodiment of the screen changing method of the present invention.

According to the determination in step S1210, if the mobile terminal 100 is not in the docking connection state (the mobile terminal 100 operates as standalone), it is determined in step S1220 that the specific App is the display device information (in this example, screen size information and DPI information , The application framework 184 of the portable terminal 100 may pass the display device information of the portable terminal 100 to the specific application as in step S1230. This corresponds to a normal processing procedure that is not different from the existing processing method.

Otherwise, in the case of the docking connection according to the determination of step S1210, the DPI value will be changed to the DPI value corresponding to the display device of the docking device (refer to step S1240) by the method shown in FIG. 5 described above. In this state, when the specific App requests the display device information as in step S1250, the application framework 184 in step S1260 does not display the information corresponding to the display device of the docking device but the display device information of the mobile terminal 100 To the particular App.

12, the DPI information and the like among the system environment setting information of the mobile terminal 100 in the docking connection state are changed (updated) to the information corresponding to the display device of the docking device. However, (Which is information corresponding to the display device information of the docking device) set as the actual (current) system configuration information (that is, the information currently set Which is information corresponding to the display device information of the non-portable terminal) to the specific App.

To this end, the application framework 184 judges whether or not the application, which is the call requestor, is a predetermined application, when the API requesting display device information from any application is called. If the application is a specific application, And transmits the display device information of the mobile terminal, which is information, to the specific App. In this case, the specific App transmits the received display device information to the related server. Otherwise, if the application requesting the display device information does not correspond to a specific application, the application framework 184 may pass the information set in the actual system configuration information.

According to the exception handling method described above, the same display device information (that is, the display device information of the portable terminal, which is always the same information regardless of whether or not the connection is docked in this example) The problem of interface confusion as described above does not occur.

[Description of FIG. 13 - Exception Handling Method 2]

13 is a view for explaining an exception handling method according to another embodiment related to the screen changing method of the present invention.

As an exception processing method different from that shown in Fig. 12, in the case of the docking connection state as a result of the judgment in the step S1310 in Fig. 13, the DPI value of the docking device will be changed as in the step S1320. This is the same as step S1240 of FIG. 12 described above. Of course, even if the docking connection is not established, the same procedure as steps S1220 and S1230 of FIG. 12 described above can be performed.

In the docking connection state, when the specific application as described above is driven (see step S1230), the application framework 184 returns the DPI value to the DPI value corresponding to the display device of the portable terminal 100 (Step S1340). That is, in the exception processing method of this example, the DPI value is changed from the DPI value of the docking device to the DPI value of the mobile terminal 100 when the specific App is driven, despite the docking connection state.

According to such a re-change, the display device information of the mobile terminal 100 is always kept fixed at the time of execution of the specific App. That is, as shown in FIG. 12, the fixed information is handed over, whereas in FIG. 13, the DPI is actually changed when the specific application is run. Of course, even in the case of FIG. 13, when an App other than the predetermined specific App is driven, the DPI re-changing process as in the above-described step S1340 does not occur.

The DPI re-change process in the above-described step S1340 may be performed not only when the specific App is requested to be driven, but also when the specific App is switched to the background state and then switched back to the foreground state (see step S1330) ).

Thereafter, when the specific App is driven or is being driven, but switched to the background state, as in step S1350, the DPI value corresponding to the docking device may be changed again (see step S1355). It goes without saying that, if it is undocked (see step S1360), it may be restored to the DPI value of the mobile terminal (see step S1370).

Although two exception handling schemes have been described above in applying the DPI changing method of the present invention, other exception handling schemes may be used. 12 and 13 illustrate a case in which the DPI value is changed to the DPI value of the portable terminal 100 (in the case of FIG. 13) or the fixed information (in the case of FIG. 12) I have mostly explained how to pass it to the App. In addition to the above methods, more active exception handling methods may be used.

Alternatively, in the case of a server providing a dynamic interface in real time according to a change in display device information of a mobile terminal according to a docking connection, a method may be provided in which the specific App directly and immediately notifies the server of the change of the display device information.

As an example, application of the DPI change method of the present invention may be used by the application framework 184 every time a change is made to the DPI value (i.e., whenever a docking connection is made or undocked) A method of immediately notifying the information through the specific App or the server can be used.

As another example, when the specific App is driven (that is, connected to a server associated with the specific App) and / or when it is switched to foreground, information according to currently set system configuration information (i.e., The display device information) can be uploaded to the server through the specific App.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the following claims And changes may be made without departing from the spirit and scope of the invention.

Claims (33)

A screen changing method in a portable terminal docked to an external device,
Receiving a docking signal according to docking separation with the external device;
Outputting a warning message indicating that data may be lost according to the docking separation;
Receiving an acknowledgment input for the warning message;
Updating a currently set value as system environment setting information of the portable terminal to a value corresponding to display device information of the portable terminal; And
An environment setting information change event that notifies a change of the system environment setting information so that an application running on the mobile terminal can reconstruct a screen layout to be displayed by reflecting a value corresponding to display device information of the mobile terminal Transferring to the running application or re-starting the screen of the running application
, ≪ / RTI &
The step of outputting the warning message
Maintaining an output state of an execution screen of the designated application when a predetermined application is running; And
And outputting the warning message when the designated application is terminated.
delete The method according to claim 1,
The step of outputting the warning message and the step of receiving the confirmation input
Wherein the input signal of the portable terminal except for the confirmation input is interrupted.
The method of claim 3,
The step of outputting the warning message and the step of receiving the confirmation input
Wherein when the input of the button whose interruption of the input signal is uncontrolled occurs, the outputting state of the warning message is maintained by re-outputting the warning message.
The method according to claim 1,
Before the step of updating the currently set value as system environment setting information of the portable terminal to a value corresponding to the display device information of the portable terminal,
Receiving a docking detection signal according to a docking connection with the external device in a state in which no confirmation input for the warning message is made;
Stopping output of the warning message;
Determining that the re-docking connection is established when the display device information of the external device matches the display device information currently set in the portable terminal;
Controlling the image data to be transferred to the external device without updating the system environment setting information of the portable terminal;
Receiving a docking signal according to docking separation with the external device;
Outputting a warning message indicating that data may be lost according to the docking separation; And
Receiving a confirmation input for the warning message
The method of claim 1, further comprising:
The method according to claim 1,
A step of controlling the image corresponding to the reconfigured screen layout to be output through the display screen of the portable terminal by reflecting the value corresponding to the display device information of the portable terminal by the executing application
The method of claim 1, further comprising:
The method according to claim 1,
Receiving a docking detection signal according to a docking connection with the external device;
Acquiring display device information corresponding to a display device of the docked connected external device;
Updating a predetermined value in system environment setting information of the mobile terminal according to the acquired display device information; And
The application being executed or the application requested to be executed through the portable terminal is configured to display a screen layout to be displayed by reflecting the update of the system environment setting information, Transferring environment setting information change notification informing of a change of the system environment setting information, ii) re-driving the screen of the running application, and iii) executing at least one of the currently executed applications except for the predetermined application Step
The method of claim 1, further comprising:
8. The method of claim 7,
Wherein the display device information includes at least one of dots per inch (DPI), a screen size, a basic screen output direction, and a screen resolution.
8. The method of claim 7,
Controlling so that image data according to the reconfigured screen layout is transmitted to the external device so that an image according to the screen layout reconstructed by the executing application can be outputted through the display screen of the external device
The method of claim 1, further comprising:
8. The method of claim 7,
Wherein the step of acquiring display device information corresponding to the display device of the external device comprises:
Wherein a DPI value corresponding to a display device of the external device is determined by referring to a DPI determination table to which a DPI value applicable for each screen resolution and screen size is mapped in advance.
8. The method of claim 7,
Wherein acquiring the display device information corresponding to the display device of the docked connected external device comprises:
And acquiring a DPI value corresponding to a display device of the external device based on the device identification information received from the external device.
8. The method of claim 7,
Wherein execution of an application other than a pre-designated application among the currently executed applications is terminated,
Obtaining a list of currently running applications;
Executing a test application to convert an existing application running in the foreground into a background state; And
And terminating execution of applications other than the predetermined application among applications of the acquired list.
8. The method of claim 7,
Wherein at least one of DPI information, screen size information, and screen output basic direction information in the system environment setting information of the mobile terminal is updated to correspond to a display device of the docking device according to a docking connection, If there is a request, notifying the display device information of the mobile terminal to the specific application
The method of claim 1, further comprising:
8. The method of claim 7,
In a state in which at least one of DPI information, screen size information, and screen output basic direction information in the system environment setting information of the portable terminal is updated so as to correspond to the display device of the external device according to the docking connection, Changing the system configuration information to information corresponding to the display device of the mobile terminal
The method of claim 1, further comprising:
15. The method of claim 14,
In the docking connection state, when the specific application is terminated or switched to the background, at least one of DPI information, screen size information, and screen output basic direction information corresponds to the display device of the external device in the system configuration information Information
The method of claim 1, further comprising:
8. The method of claim 7,
Each time the at least one of the DPI information, the screen size information, and the screen output basic direction information in the system configuration information is changed, directly notifies the changed display device information to the server regarding the execution request or the application requested to be executed, Notifying the changed display device information to the specific application so that the display device information can be transmitted to the server
The method of claim 1, further comprising:
8. The method of claim 7,
When the specific application is executed or when the specific application is switched to the foreground, the display device information currently set as the system configuration information is directly notified to the server regarding the specific application, or the display device information And notifying the currently set display device information to the specific application so that the specific application can be delivered.
1. A portable terminal docked with an external device,
The portable terminal includes a docking interface unit; Docking agent; And an application framework,
Wherein the docking agent comprises:
And a controller for outputting a warning message indicating that data may be lost due to the docking separation when receiving a docking signal due to docking separation with the external device through the docking interface unit, Requesting the application framework to update the value corresponding to the display device information of the mobile terminal,
The application framework comprising:
Updating the currently set value as system environment setting information of the portable terminal to a value corresponding to display device information of the portable terminal,
An environment setting information change event that notifies a change of the system environment setting information so that an application running on the mobile terminal can reconstruct a screen layout to be displayed by reflecting a value corresponding to display device information of the mobile terminal To the running application or to re-start the running application's screen,
Wherein the docking agent maintains an output state of an execution screen of the specified application when a predetermined application is running, and outputs the warning message when the specified application is terminated.
delete 19. The method of claim 18,
Wherein the docking agent controls the input signal of the portable terminal except for the confirmation input to be blocked until the confirmation input is received after outputting the warning message.
21. The method of claim 20,
The docking agent re-outputs the warning message and maintains the output state of the warning message when an input of a button whose blocking of the input signal is uncontrolled occurs before receiving the confirmation input after outputting the warning message Wherein the portable terminal is a portable terminal.
19. The method of claim 18,
When a docking detection signal corresponding to a docking connection with the external device is received in a state in which the confirmation input for the warning message is not received,
If the docking agent stops outputting the warning message and determines that the display device information of the external device and the display device information set in the current portable terminal correspond to each other, Wherein the control unit controls the image data to be transferred to the external device without updating the information and outputs the warning message when receiving the docking signal according to the docking separation with the external device, And requests the application framework to update the value corresponding to the display device information of the mobile terminal.
19. The method of claim 18,
When a docking detection signal is received according to a docking connection with the external device,
Wherein the docking agent obtains display device information corresponding to a display device of the external device,
The application framework comprising:
The mobile terminal updates a predetermined value in the system environment setting information of the mobile terminal in accordance with the acquired display device information and displays an application running in the mobile terminal or an application requested to be executed in response to the update of the system environment setting information The method comprising the steps of: i) transferring an environment setting information change event notifying the application that the application is being executed or the application requested to be executed to be changed, ii) And iii) terminating execution of an application other than a pre-designated application among currently executed applications.
24. The method of claim 23,
Wherein the display device information includes at least one of a DPI (dots per inch), a screen size, a basic screen output direction, and a screen resolution.
24. The method of claim 23,
Wherein the docking agent determines a DPI value corresponding to display device information of the external device by referring to a DPI determination table to which a DPI value applicable according to a screen resolution and a screen size is mapped in advance.
24. The method of claim 23,
Wherein the docking agent comprises:
And controls the image data according to the reconfigured screen layout to be transmitted to the external device so that an image according to the screen layout reconstructed by the running application can be output through the display screen of the external device Terminal.
24. The method of claim 23,
Wherein the docking agent comprises:
And acquires a DPI value corresponding to the display device of the external device based on the device identification information received from the external device.
24. The method of claim 23,
Wherein execution termination of an application other than a predefined application among the currently executing applications is performed by the application framework,
A list of currently running applications is acquired and a test application is executed to switch an application currently running in the foreground into a background state and execution of applications other than the predefined application among the acquired list applications is terminated .
24. The method of claim 23,
Wherein at least one of DPI information, screen size information, and screen output basic direction information in the system environment setting information of the portable terminal is updated to correspond to a display device of the docking device according to a docking connection, , The application framework notifies the display device information of the portable terminal to the specific application.
24. The method of claim 23,
The application framework comprising:
In a state in which at least one of DPI information, screen size information, and screen output basic direction information in the system environment setting information of the portable terminal is updated so as to correspond to the display device of the external device according to the docking connection, The system configuration information is changed to information corresponding to the display device of the portable terminal.
31. The method of claim 30,
The application framework comprising:
In the docking connection state, when the specific application is terminated or switched to the background, at least one of DPI information, screen size information, and screen output basic direction information corresponds to the display device of the external device in the system configuration information To the information to be transmitted to the portable terminal.
24. The method of claim 23,
The application framework comprising:
The display device information is notified directly to the server regarding the specific application whenever at least one of DPI information, screen size information, and screen output basic direction information in the system configuration information is changed, And notifies the changed display device information to the specific application so that the information can be transmitted.
24. The method of claim 23,
The application framework comprising:
When the specific application is executed or when the specific application is switched to the foreground, the display device information currently set as the system configuration information is directly notified to the server regarding the specific application, or the display device information And notifies the currently set display device information to the specific application so that the specific application can be delivered.

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