JP5211850B2 - Mobile phone and external display method of mobile phone - Google Patents

Description

  The present invention relates to a mobile phone capable of realizing external output display on a display screen and an external display method of the mobile phone.

  The display screen of a mobile phone has been improved in definition, and the amount of information that can be displayed on one screen has been improved. However, due to physical design limitations as a mobile phone, there is a restriction on increasing the screen size. However, it is desirable to secure a wider screen display area from the viewpoint of improving the ease of work performed using the mobile phone. For this reason, a method of displaying screen information of a mobile phone on an external display has been devised (see, for example, Patent Document 1 and Patent Document 2).

JP 2000-324544 A JP 2001-268180 A

  According to the methods disclosed in Patent Literature 1 and Patent Literature 2, the screen information of the mobile phone can be shown to the user in a state that is easier to see. However, the methods disclosed in Patent Literature 1 and Patent Literature 2 have a problem in that it is necessary to prepare an external display, which is expensive.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a mobile phone and an external display method for the mobile phone that can realize external output display on a display screen at low cost.

The mobile phone according to the present invention includes a display means, an external data interface means for communicating with another mobile phone, a CPU for performing processing according to a program, and a screen corresponding to the processing of the CPU on the display means. Screen data processing means, and card detection means for detecting whether or not the IC card in which the contractor information is recorded is attached to the own device , wherein the screen data processing means uses the external data as a normal mode. When another mobile phone is connected to the interface means, screen data for two screens is generated, and a first screen corresponding to the first screen data is displayed on the display means. a mode for outputting to the other mobile phone screen data via the external data interface unit, a second input from the external data interface means As the external screen data signal input mode for performing display based on surface data preferentially, the external data other when the portable phone is connected to the interface unit, a second screen received said external data interface means A mode in which a second screen corresponding to data is displayed on the display means, and the CPU and the screen data processing means are configured to switch the external mode from the normal mode when the mounting of the IC card cannot be detected. The screen data signal input mode is shifted to .

Further , in one configuration example of the mobile phone of the present invention, the external data interface means is connected to the other mobile phone only when the program activated by the CPU is compatible with external display display. It is characterized by detecting whether or not.

Further, one configuration example of the mobile phone of the present invention further includes key input means, a multiplexer connected to the key input means, the CPU, and the external data interface means. In the case of the mode, the key input signal input from the key input means is output to the CPU and the key input signal received by the external data interface means is output to the CPU. Is characterized in that the key input signal input from the key input means is output to the other mobile phone via the external data interface means.
Further, in one configuration example of the mobile phone according to the present invention, the screen data processing means may be configured such that when the other mobile phone is connected to the external data interface means in the external screen data signal input mode, The second screen corresponding to the screen data and the third screen corresponding to the processing of the CPU of the own apparatus are combined and displayed on the display means.

The mobile phone external display method according to the present invention includes a program execution step in which a CPU performs processing according to a program, and an external device detection in which an external data interface means detects whether another mobile phone is connected. A screen data processing step for causing the display means to display a screen corresponding to the processing of the CPU, and whether or not an IC card on which the contractor information is recorded is attached to the own device. A card detection step , wherein the screen data processing step generates, as a normal mode, screen data for two screens when another mobile phone is connected to the external data interface means, A first screen corresponding to the screen data is displayed on the display means, and the second screen data is displayed on the external data interface. A mode for outputting to the other mobile phone via the chair unit, a display based on the second screen data as the external screen data signal input mode for preferentially to the input from an external data interface means, said external data A mode in which a second screen corresponding to the second screen data received by the external data interface means is displayed on the display means when another mobile phone is connected to the interface means ; The CPU and the screen data processing means shift from the normal mode to the external screen data signal input mode when it is not possible to detect the mounting of the IC card .

Also , in one configuration example of the external display method of the mobile phone of the present invention, the external device detection step is performed only when the program activated by the CPU is compatible with external display display. It is characterized by detecting whether it is connected.

Further, according to one configuration example of the external display method of the mobile phone of the present invention, the multiplexer further outputs a key input signal input from a key input means to the CPU and outputs the external data interface in the normal mode. The key input signal received by the face means is output to the CPU, and in the case of the external screen data signal input mode, the key input signal input from the key input means is sent to the other portable terminal via the external data interface means. A key input signal switching control step for outputting to a telephone is provided.
Further, in one configuration example of the external display method of the mobile phone of the present invention, the screen data processing step is performed when another mobile phone is connected to the external data interface means in the external screen data signal input mode. The method includes a step of combining the second screen corresponding to the second screen data and the third screen corresponding to the processing of the CPU of the own apparatus and causing the display means to display the combined screen.

  According to the present invention, a user can introduce an external display device at a low cost. Mobile phones with a display are widely used, and new models are frequently released. Normally, when a new model is replaced, the old model cannot be used. However, if the function of the present invention is implemented in a mobile phone, the old model can be used as an external display device. Therefore, external output display can be realized at low cost without separately preparing an external display device.

[ Reference example ]
Hereinafter, reference examples of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a mobile phone according to a reference example of the present invention.
In FIG. 1, a mobile phone 100 is a terminal used by a user, and a mobile phone 120 functions as an external display device of the mobile phone 100.

The mobile phone 100 communicates with a CPU 101 that executes processing according to a program, a screen data processing unit 103 that displays a screen according to processing of the CPU 101 on a display described later, a display 104 that serves as a display unit, and an external device. An external data interface unit 105 is provided.
The cellular phone 120 has the same configuration as the cellular phone 100 and includes a CPU 121, a screen data processing unit 123, a display 124, and an external data interface unit 125.

  The components of the mobile phones 100 and 120 generally operate as follows. The screen data processing unit 103 of the mobile phone 100 performs processing of the first screen data to be displayed on the display 104 in accordance with the operating application program, and the operating application program supports the external display display and When the display device is in a usable state, the second screen data to be displayed on the external display device is processed.

  The external data interface unit 105 of the mobile phone 100 detects whether or not an external device such as an external display device is connected, and is sent from the screen data processing unit 103 when the external display device is connected. The second screen data thus received is output to an external device.

  The screen data processing unit 123 of the mobile phone 120 processes third screen data to be displayed on the display 124 according to the application program being operated, and receives data from an external device through the external data interface unit 125. If it is possible, the second screen data sent from the external data interface unit 125 is displayed on the display 124.

  The external data interface unit 125 of the mobile phone 120 communicates with an external device such as the mobile phone 100. When the mobile phone 100 is connected as an external device, the external data interface unit 125 is sent from the mobile phone 100. 2 screen data is received.

In this reference example , the cellular phones 100 and 120 operate as normal modes for performing cell detection, standby, voice communication, data communication, and the like as operation modes, and from the external data interface unit with the communication function with the network turned off. There are two external screen data signal input modes in which display based on input screen data is preferentially performed.

  When the mobile phone 120 is connected to the external data interface unit 105 in the normal mode, the screen data processing unit 103 of the mobile phone 100 generates screen data for two screens and responds to the first screen data. The first screen is displayed on the display 104, and the second screen data is output to the mobile phone 120 via the external data interface unit 105.

  On the other hand, when the mobile phone 100 is connected to the external data interface unit 125 in the external screen data signal input mode, the screen data processing unit 123 of the mobile phone 120 receives the second data received by the external data interface unit 125. A second screen corresponding to the screen data is displayed on the display 124.

As described above, in this reference example , an external display device can be introduced at a low cost. In other words, mobile phones with a display are widely used, and new models are frequently released. Normally, if you replace with a new model, you will not be able to use the old model. However, if the functions of this reference example are implemented in your mobile phone, the old model will be used as an external display device even if you replace it with a new model. Can be used. Therefore, external output display can be realized at low cost without separately preparing an external display device.

[ First Embodiment ]
Next, a first embodiment of the present invention will be described in detail with reference to the drawings. FIG. 2 is a block diagram showing the configuration of the mobile phone according to the first embodiment of the present invention. The same components as those in FIG. 1 are denoted by the same reference numerals. In the present embodiment, a reference example will be described more specifically.

  The cellular phone 100a includes a CPU 101 that executes processing according to a program, a ROM (Read Only Memory) 102 that stores programs and data of the CPU 101, a screen data processing unit 103, a display 104, and an external data interface unit 105. Communication between the UIM (User Identity Module) card 106, which is an IC card in which the contractor information is recorded, the UIM card detection unit 107 that detects whether the UIM card 106 is attached to the own device, and the network. A communication unit 108, an antenna 109, a RAM (Random Access Memory) 110, a camera 111, and a key input unit 112 are provided.

  The cellular phone 120a has the same configuration as the cellular phone 100a, and includes a CPU 121, a ROM 122, a screen data processing unit 123, a display 124, an external data interface unit 125, a UIM card detection unit 127, and a communication unit 128. An antenna 129, a RAM 130, a camera 131, and a key input unit 132.

  Each component of the cellular phones 100a and 120a operates as outlined below. The ROM 102 of the mobile phone 100a stores data such as image data and music data obtained by downloading from the network or shooting with the camera 111, a program for basic processing of the CPU 101, and an image viewer function. Application programs for realizing various functions such as a music player function, a mail function, and a game function are stored.

The CPU 101 executes processing according to the program stored in the ROM 102. The CPU 101 uses the RAM 110 for temporary data storage.
The UIM card 106 stores user data such as contractor information and a telephone directory.

The communication unit 108 performs baseband signal processing and RF (Radio frequency) signal processing in order to perform voice communication and data communication via a network. The antenna 109 transmits the RF signal output from the communication unit 108 and receives the RF signal transmitted from a network base station (not shown).
The UIM card detection unit 107 detects whether or not the UIM card 108 is attached to the mobile phone 100a. Only when the installation of the UIM card 106 is detected, the communication unit 108 operates.

  Similarly, the ROM 122 of the mobile phone 120a stores data such as image data and music data obtained by downloading from the network or shooting with the camera 131, a program for basic processing of the CPU 121, and Application programs for realizing various functions such as an image viewer function, a music player function, a mail function, and a game function are stored. The CPU 121 executes processing according to the program stored in the ROM 122. The CPU 121 uses the RAM 130 for temporary data storage.

The communication unit 128 performs baseband signal processing and RF signal processing to perform voice communication and data communication via a network. The antenna 129 transmits the RF signal output from the communication unit 128 and receives the RF signal transmitted from the network base station.
The UIM card detection unit 127 detects whether or not a UIM card is attached to the mobile phone 120a. In the present embodiment, a case where a UIM card is not attached to mobile phone 120a will be described. Therefore, since the installation of the UIM card cannot be detected, the communication unit 128 does not operate.

Next, the operation of the present embodiment of the present invention will be described in detail. FIG. 3 is a flowchart showing the operation of the mobile phones 100a and 120a.
For example, when the mobile phone 100a is turned on by the user operating the key input unit 112, the UIM card detection unit 107 detects whether or not a UIM card is attached (step S1). Here, the UIM card 106 is attached to the mobile phone 100a. When the UIM card detection unit 107 detects that the UIM card 106 is mounted (YES in step S1), the CPU 101 enables the communication unit 108 to operate as a normal mode and shifts to a cell detection or standby state. (Step S2).

  On the other hand, when the power of the mobile phone 120a is turned on by the operation of the key input unit 132 by the same user as the mobile phone 100a, the UIM card detection unit 127 detects whether or not the UIM card is attached (step S1). Here, the UIM card is not attached to the mobile phone 120a. When the installation of the UIM card cannot be detected (NO in step S1), CPU 121 disables communication unit 128, shifts to the external screen data signal input mode, and turns on external data interface unit 125 (step S7). .

  Next, the CPU 101 of the mobile phone 100a checks whether or not the program stored in the ROM 102 is compatible with the external display display (step S3). If the program is compatible with the external display display, the external device is connected. The external data interface unit 105 is caused to execute polling for detecting whether or not it is performed (step S4).

  Similarly, the CPU 121 of the mobile phone 120a checks whether or not the program stored in the ROM 122 is compatible with external display display (step S8), and if it is compatible with external display display, the external device is connected. The external data interface unit 125 is caused to execute polling for detecting whether or not it is performed (step S9).

  Note that the CPUs 101 and 121 preferably turn off the external data interface units 105 and 125 without performing polling when the running program does not support external display display.

  Here, when mobile phone 100a and mobile phone 120a are connected, external data interface unit 105 of mobile phone 100a detects the connection with external data interface unit 125 of mobile phone 120a (YES in step S4). Then, the CPU 101 and the screen data processing unit 103 are notified that the mobile phone 120a which is an external device is connected.

  On the other hand, the external data interface unit 125 of the mobile phone 120a detects the connection with the external data interface unit 105 of the mobile phone 100a (YES in step S9) and confirms that the mobile phone 100a as an external device is connected. The CPU 121 and the screen data processing unit 123 are notified.

  The physical connection between the external data interface unit 105 and the external data interface unit 125 may be a wired connection using a cable or an adapter, or a wireless module such as Bluetooth (registered trademark) is used. It may be a wireless connection. Either the connection between the external data interface unit 105 and the external data interface unit 125 or the power-on of the mobile phones 100a and 120a may be performed first.

  Next, the CPU 101 of the mobile phone 100 a that receives the notification from the external data interface unit 105 changes the screen data processing content of the screen data processing unit 103. In accordance with the control of the CPU 101, the screen data processing unit 103 changes the data processing for displaying only one screen on the display 104 that has been performed so far to the data processing for displaying two screens, and generates screen data for two screens. (Step S5). Then, the screen data processing unit 103 causes the display 104 to display a first screen corresponding to the first screen data for the display 104 and also causes the external data interface unit 105 to display the second screen data for the external display. Output (step S6). The external data interface unit 105 outputs the second screen data sent from the screen data processing unit 103 to the mobile phone 120a.

Upon receiving the notification from the external data interface unit 125, the CPU 121 of the mobile phone 120a controls the screen data processing unit 123 to wait for screen data from the mobile phone 100a.
When external data interface unit 125 receives the second screen data from external data interface unit 105 of mobile phone 100a (YES in step S10), external data interface unit 125 outputs the received second screen data to screen data processing unit 123. To do.

  The screen data processing unit 123 causes the display 124 to display a second screen corresponding to the second screen data sent from the external data interface unit 125 (step S11). As described above, in the external screen data signal input mode, the operation is performed so that display of the externally input screen data is performed with priority.

At this time, the CPU 121 and the screen data processing unit 123 may be configured to perform image quality adjustment such as brightness and hue of the display 124 according to settings from the user through the key input unit 132. Furthermore, the screen data processing unit 123 combines a third screen such as a menu screen for image quality adjustment setting according to the processing of the CPU 121 and the second screen sent from the external data interface unit 125. It may be displayed on the display 124.
Further, the mobile phone 100a and the mobile phone 120a may be forcibly switched from the normal mode to the external screen data signal input mode by a user's manual operation.

With the configuration as described above, the effects described in the reference example can be obtained in the present embodiment. In the present embodiment, the mobile phone can be used as an external display device by a simple method. The reason is that if the mobile phone is limited to use as an external display device, it is not necessary to wear a UIM card. Therefore, by detecting the presence or absence of the UIM card and switching the mode, the mobile phone can be instantly used as an external display device. This is because it can be used.

[ Second Embodiment ]
Next, the configuration of the second exemplary embodiment of the present invention will be described in detail with reference to FIG. FIG. 4 is a block diagram showing a configuration of a mobile phone according to the second embodiment of the present invention.
The mobile phone 100b of this embodiment is obtained by adding a multiplexer 113 to the mobile phone 100a of the first embodiment , and the mobile phone 120b is obtained by adding a multiplexer 133 to the mobile phone 120a. is there.

  The multiplexer 113 of the mobile phone 100b collectively outputs the key input signal from the key input unit 112 and the key input signal from the external data interface unit 105a to the CPU 101. That is, the multiplexer 113 outputs the key input signal to the CPU 101 when the key input unit 112 is operated by the user and a key input signal corresponding to the operation is output from the key input unit 112, and the external data interface. When a key input signal is output from the unit 105a, the key input signal is output to the CPU 101.

The external data interface unit 105a has the same function as that of the external data interface unit 105 of the first embodiment , and further receives a key input signal sent from the external data interface unit 125a of the cellular phone 120b by the multiplexer 113. The function to output to.

  On the other hand, the multiplexer 133 of the mobile phone 120b outputs a part of the key input signal from the key input unit 132 to the external data interface unit 125a instead of the CPU 121. The user can set which key input signal is output to the external data interface unit 125a. For example, the user operates the key input unit 132 to set to use the mobile phone 120b as an external input device. In accordance with this setting, the CPU 121 of the mobile phone 120b controls the multiplexer 133. Thereafter, a key input signal corresponding to a user operation is output from the key input unit 132 to the external data interface unit 125a through the multiplexer 133.

The external data interface unit 125a has the same function as the external data interface unit 125 of the first embodiment , and further has a function of outputting a key input signal sent from the multiplexer 133 to the mobile phone 100b.
Other operations are the same as those in the first embodiment .

  With the above configuration, the user using the mobile phone 100b can use the mobile phone 120b as an external display device and also as an external input device.

  Although the present invention has been described with reference to the above embodiment, the present invention is not limited to the above embodiment. The configuration and details of the present invention may be used by appropriately combining the above embodiments, and may be modified as appropriate within the scope of the claims of the present invention.

  The present invention can be applied to all applications that operate on a mobile phone. For example, the present invention can be applied to the use of a game using two screens, the use of referring to before and after a change when editing a photographed photograph, and the text creation work while referring to a document.

It is a block diagram which shows the structure of the mobile telephone which concerns on the reference example of this invention. It is a block diagram which shows the structure of the mobile telephone which concerns on the 1st Embodiment of this invention. It is a flowchart which shows operation | movement of the mobile telephone based on the 1st Embodiment of this invention. It is a block diagram which shows the structure of the mobile telephone which concerns on the 2nd Embodiment of this invention.

Explanation of symbols

  100, 120, 100a, 120a, 100b, 120b ... mobile phone, 101, 121 ... CPU, 102, 122 ... ROM, 103, 123 ... screen data processing unit, 104, 124 ... display, 105, 125, 105a, 125a ... External data interface unit, 106 ... UIM card, 107, 127 ... UIM card detection unit, 108, 128 ... communication unit, 109, 129 ... antenna, 110, 130 ... RAM, 111, 131 ... camera, 112, 132 ... key Input unit 113, 133... Multiplexer.

Claims (8)

Display means;
An external data interface means for communicating with other mobile phones;
A CPU that performs processing according to the program;
Screen data processing means for causing the display means to display a screen corresponding to the processing of the CPU ;
Card detecting means for detecting whether or not the IC card in which the contractor information is recorded is attached to the own device ,
The screen data processing means generates, as a normal mode , screen data for two screens when another mobile phone is connected to the external data interface means, and generates a screen data corresponding to the first screen data. A mode in which a first screen is displayed on the display means and second screen data is output to the other mobile phone via the external data interface means; and a second input from the external data interface means of the display based on the screen data as the external screen data signal input mode for preferentially, when said other mobile telephone to the external data interface means is connected, the second to the external data interface means receives A mode for causing the display means to display a second screen corresponding to the screen data ,
The mobile phone according to claim 1, wherein the CPU and the screen data processing unit shift from the normal mode to the external screen data signal input mode when the IC card cannot be attached . The mobile phone according to claim 1 , wherein
The external data interface means detects whether or not the other mobile phone is connected only when the program activated by the CPU is compatible with external display display. The mobile phone according to claim 1 , wherein
Furthermore, key input means,
The key input means, the CPU, and a multiplexer connected to the external data interface means,
In the normal mode, the multiplexer outputs a key input signal input from the key input means to the CPU and outputs a key input signal received by the external data interface means to the CPU. In the screen data signal input mode, the mobile phone characterized in that the key input signal input from the key input means is output to the other mobile phone via the external data interface means. The mobile phone according to claim 1 , wherein
The screen data processing means includes a second screen corresponding to the second screen data and the own device when another mobile phone is connected to the external data interface means in the external screen data signal input mode. A cellular phone characterized in that a third screen corresponding to the processing of the CPU is synthesized and displayed on the display means. A program execution step in which the CPU performs processing according to the program;
An external device detecting step in which the external data interface means detects whether another mobile phone is connected;
A screen data processing means for causing the display means to display a screen corresponding to the processing of the CPU ;
A card detection step for detecting whether or not an IC card in which the contractor information is recorded is attached to the own device ,
In the screen data processing step, as a normal mode , when another mobile phone is connected to the external data interface means, screen data for two screens is generated, and the first screen data corresponding to the first screen data is generated. A mode in which a first screen is displayed on the display means and second screen data is output to the other mobile phone via the external data interface means; and a second input from the external data interface means of the display based on the screen data as the external screen data signal input mode for preferentially, when said other mobile telephone to the external data interface means is connected, the second to the external data interface means receives A mode for causing the display means to display a second screen corresponding to the screen data ,
The external display method for a mobile phone, wherein the CPU and the screen data processing means shift from the normal mode to the external screen data signal input mode when the IC card cannot be attached . The external display method for a mobile phone according to claim 5 ,
The external device detecting step detects whether or not the other mobile phone is connected only when the program activated by the CPU is compatible with an external display display. Display method. The external display method for a mobile phone according to claim 5 ,
Further, in the normal mode, the multiplexer outputs a key input signal input from the key input means to the CPU and outputs a key input signal received by the external data interface means to the CPU. In the screen data signal input mode, a key input signal switching control step for outputting a key input signal input from the key input means to the other mobile phone via the external data interface means is provided. External display method for mobile phones. The external display method for a mobile phone according to claim 5 ,
In the screen data processing step, when another mobile phone is connected to the external data interface means in the external screen data signal input mode, the second screen corresponding to the second screen data and the own device An external display method for a mobile phone, comprising a step of combining the third screen corresponding to the processing of the CPU and causing the display means to display it.

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