JP5955129B2 - Wireless terminal apparatus and communication control method - Google Patents

Description

  The present invention relates to a wireless terminal device and a communication control method capable of transitioning to a power saving state.

  Conventionally, a wireless terminal device including a touch screen display such as a smartphone or a tablet terminal is known. These wireless terminal devices tend to require a lot of power for application execution, display, communication, and the like as their functions increase, and thus reduce convenience for users, especially in portable wireless terminal devices. There is a need to reduce power consumption without any problems.

  Under such circumstances, a technique for reducing power consumption in a wireless terminal device has been proposed (see, for example, Patent Document 1). In addition, depending on the setting, the wireless terminal device may be provided with a function for the device body to transition to a power-saving sleep state when the screen is turned off.

JP 2009-49875 A

  By the way, for example, when the wireless terminal device is connected to WiMAX (registered trademark) (active state or idle state), even if the screen is turned off, the wireless terminal device maintains the connection or searches when the session is disconnected. .

  However, when the screen is turned off, no user operation is performed until the screen is turned on again, so that there is a low possibility that new data communication will occur. Therefore, there is a risk that power is consumed unnecessarily.

  An object of this invention is to provide the radio | wireless terminal apparatus and communication control method which can reduce power consumption, suppressing the fall of convenience.

The wireless terminal device according to the present invention disconnects a communication session by the predetermined wireless communication system in a state where the communication unit that performs wireless communication by the predetermined wireless communication system, the display unit, and the display unit are powered on. If a control unit that over the first hour performing a search of said predetermined wireless communication system, wherein the control unit includes a power supply of the display unit and in the oFF state, by the predetermined wireless communication system When a communication session by the predetermined radio communication system is disconnected in a state where data communication is not performed, the search for the predetermined radio communication system is performed for a second time shorter than the first time. Features.

The wireless terminal device according to the present invention disconnects a communication session by the predetermined wireless communication system in a state where the communication unit that performs wireless communication by the predetermined wireless communication system, the display unit, and the display unit are powered on. A control unit that searches for the predetermined radio communication system, and the control unit is in a state in which communication by the predetermined radio communication system is performed in a state where the power of the display unit is off When a transition is made to a state in which communication by the predetermined wireless communication system is not performed, the search for the predetermined wireless communication system is not performed.

The wireless terminal device according to the present invention disconnects a communication session by the predetermined wireless communication system in a state where the communication unit that performs wireless communication by the predetermined wireless communication system, the display unit, and the display unit are powered on. A control unit that searches for the predetermined wireless communication system for a predetermined time , and the control unit is in a state where data communication is not performed when the power of the display unit is off. In the case of shifting, the predetermined time is shortened.

  Moreover, in the radio | wireless terminal apparatus which concerns on this invention, when the power supply of the said display part changes from the OFF state to the ON state, it is preferable to return the said control part to the time before shortening the said predetermined time.

The wireless terminal device according to the present invention disconnects a communication session by the predetermined wireless communication system in a state where the communication unit that performs wireless communication by the predetermined wireless communication system, the display unit, and the display unit are powered on. A control unit that searches for the predetermined radio communication system, and the control unit performs communication by the predetermined radio communication system in a state where the power of the display unit is off. When the communication session with a wireless communication system is disconnected, and wherein the disabling search of the predetermined wireless communication system.

In the wireless terminal device according to the present invention, when the communication session is disconnected while data communication is being performed in the predetermined wireless communication system in a state where the power of the display unit is off, It is preferable to search for the predetermined wireless communication system over an hour.

Further, the program according to the present invention is a program for controlling a wireless terminal device including a communication unit that performs wireless communication by a predetermined wireless communication system and a display unit, and the display unit is powered on. If the communication session by the predetermined wireless communication system is disconnected, the function intends line searching of the predetermined wireless communication system over a first time, the power of the display unit and in the oFF state, the predetermined in a state in which communication by the wireless communication system is not being performed, when the communication session by the predetermined wireless communication system is disconnected, the search of the predetermined wireless communication system over a shorter second time than the first time And a function to perform .
Further, the program according to the present invention is a program for controlling a wireless terminal device including a communication unit that performs wireless communication by a predetermined wireless communication system and a display unit, and the display unit is powered on. When a communication session by the predetermined wireless communication system is disconnected, communication by the predetermined wireless communication system is performed in a state in which the search for the predetermined wireless communication system is performed and the display unit is turned off. And a function for prohibiting a search for the predetermined wireless communication system when a transition is made from the current state to a state where communication by the predetermined wireless communication system is not performed.
The program according to the present invention is
A program for controlling a wireless terminal device including a communication unit that performs wireless communication by a predetermined wireless communication system and a display unit, wherein the communication session is performed by the predetermined wireless communication system when the display unit is powered on Is disconnected, the function of searching for the predetermined wireless communication system over a predetermined period of time, and the predetermined unit when the display unit is turned off and data communication is not performed. And a function of shortening time.

  According to the present invention, the wireless terminal device can reduce power consumption while suppressing a decrease in convenience.

FIG. 1 is a perspective view illustrating an appearance of a smartphone according to the embodiment. FIG. 2 is a front view illustrating an appearance of the smartphone according to the embodiment. FIG. 4 is a rear view illustrating an appearance of the smartphone according to the embodiment. FIG. 4 is a block diagram illustrating a configuration of the smartphone according to the embodiment. FIG. 5 is a block diagram illustrating detailed functions of the communication unit and the controller according to the embodiment. FIG. 6 is a diagram illustrating a state transition pattern according to the embodiment in time series. FIG. 7 is a flowchart illustrating a process related to the change of the time value in the smartphone according to the embodiment. FIG. 8 is a flowchart illustrating processing related to transition of the communication processing unit in the smartphone according to the embodiment.

  Embodiments for carrying out the present invention will be described in detail with reference to the drawings. Hereinafter, a smartphone will be described as an example of a wireless terminal device.

  The external appearance of the smartphone 1 according to the embodiment will be described with reference to FIGS. 1 to 3. As shown in FIGS. 1 to 3, the smartphone 1 has a housing 20. The housing 20 includes a front face 1A, a back face 1B, and side faces 1C1 to 1C4. The front face 1 </ b> A is the front of the housing 20. The back face 1 </ b> B is the back surface of the housing 20. The side faces 1C1 to 1C4 are side surfaces that connect the front face 1A and the back face 1B. Hereinafter, the side faces 1C1 to 1C4 may be collectively referred to as the side face 1C without specifying which face.

  The smartphone 1 includes a touch screen display 2, buttons 3A to 3C, an illuminance sensor 4, a proximity sensor 5, a receiver 7, a microphone 8, and a camera 12 on the front face 1A. The smartphone 1 has a camera 13 on the back face 1B. The smartphone 1 has buttons 3D to 3F and an external interface 14 on the side face 1C. Hereinafter, the buttons 3A to 3F may be collectively referred to as the button 3 without specifying which button.

  The touch screen display 2 includes a display 2A and a touch screen 2B. The display 2A includes a display device such as a liquid crystal display (Liquid Crystal Display), an organic EL panel (Organic Electro-Luminescence panel), or an inorganic EL panel (Inorganic Electro-Luminescence panel). The display 2A displays characters, images, symbols, graphics, and the like.

  The touch screen 2B detects contact of a finger, a stylus pen, or the like with respect to the touch screen display 2. The touch screen 2B can detect a position where a plurality of fingers, a stylus pen, or the like is in contact with the touch screen display 2.

  The detection method of the touch screen 2B may be any method such as a capacitance method, a resistive film method, a surface acoustic wave method (or an ultrasonic method), an infrared method, an electromagnetic induction method, and a load detection method. Hereinafter, for the sake of simplicity of explanation, a finger that the touch screen 2B detects contact with the touch screen display 2 or a stylus pen or the like may be simply referred to as “finger”.

  The smartphone 1 determines the type of gesture based on the contact, contact position, contact time, or number of contacts detected by the touch screen 2B. The gesture is an operation performed on the touch screen display 2. The gesture discriminated by the smartphone 1 includes touch, long touch, release, swipe, tap, double tap, long tap, drag, flick, pinch in, pinch out, and the like.

  A touch is a gesture in which a finger contacts the touch screen display 2 (for example, a surface). The smartphone 1 determines a gesture in which a finger contacts the touch screen display 2 as a touch. The long touch is a gesture in which a finger contacts the touch screen display 2 for a predetermined time or more. The smartphone 1 determines a gesture in which a finger contacts the touch screen display 2 for a predetermined time or more as a long touch.

  A release is a gesture in which a finger leaves the touch screen display 2. The smartphone 1 determines a gesture in which a finger leaves the touch screen display 2 as a release. The swipe is a gesture that moves while the finger is in contact with the touch screen display 2. The smartphone 1 determines a gesture that moves while the finger is in contact with the touch screen display 2 as a swipe.

  A tap is a gesture for releasing following a touch. The smartphone 1 determines a gesture for releasing following a touch as a tap. The double tap is a gesture in which a gesture for releasing following a touch is continued twice. The smartphone 1 determines a gesture in which a gesture for releasing following a touch is continued twice as a double tap.

  A long tap is a gesture for releasing following a long touch. The smartphone 1 determines a gesture for releasing following a long touch as a long tap. The drag is a gesture for performing a swipe from an area where a movable object is displayed. The smartphone 1 determines, as a drag, a gesture for performing a swipe starting from an area where a movable object is displayed.

  The flick is a gesture that is released while the finger moves at high speed in one direction following the touch. The smartphone 1 determines, as a flick, a gesture that is released while the finger moves in one direction at high speed following the touch. Flick: Up flick that moves your finger up the screen, Down flick that moves your finger down the screen, Right flick that moves your finger right in the screen, Left flick that moves your finger left in the screen Etc.

  Pinch-in is a gesture that swipes in a direction in which a plurality of fingers approach each other. The smartphone 1 determines, as a pinch-in, a gesture that swipes in a direction in which a plurality of fingers approach each other. Pinch-out is a gesture that swipes a plurality of fingers away from each other. The smartphone 1 determines a gesture of swiping in a direction in which a plurality of fingers move away from each other as a pinch out.

  The smartphone 1 operates according to these gestures that are determined via the touch screen 2B. Therefore, operability that is intuitive and easy to use for the user is realized. The operation performed by the smartphone 1 according to the determined gesture differs depending on the screen displayed on the touch screen display 2.

  FIG. 4 is a block diagram illustrating the configuration of the smartphone 1. The smartphone 1 includes a touch screen display 2, a button 3, an illuminance sensor 4, a proximity sensor 5, a communication unit 6, a receiver 7, a microphone 8, a storage 9, a controller 10, and cameras 12 and 13. , An external interface 14, an acceleration sensor 15, an orientation sensor 16, and a rotation detection sensor 17.

  As described above, the touch screen display 2 includes the display 2A and the touch screen 2B. The display 2A displays characters, images, symbols, graphics, or the like. The touch screen 2B detects a gesture.

  The button 3 is operated by the user. The button 3 includes buttons 3A to 3F. The controller 10 detects an operation on the button by cooperating with the button 3. The operation on the button is, for example, click, double click, push, and multi-push.

  For example, the buttons 3A to 3C are a home button, a back button, or a menu button. For example, the button 3D is a power on / off button of the smartphone 1. The button 3D may also serve as a sleep / sleep release button. For example, the buttons 3E and 3F are volume buttons.

  The illuminance sensor 4 detects illuminance. For example, the illuminance is light intensity, brightness, luminance, or the like. The illuminance sensor 4 is used for adjusting the luminance of the display 2A, for example.

  The proximity sensor 5 detects the presence of a nearby object without contact. The proximity sensor 5 detects that the touch screen display 2 is brought close to the face, for example.

  The communication unit 6 communicates wirelessly. The communication method performed by the communication unit 6 is a wireless communication standard. For example, wireless communication standards include cellular phone communication standards such as 2G, 3G, and 4G. For example, communication standards for cellular phones include LTE (Long Term Evolution), W-CDMA, CDMA2000, PDC, GSM (registered trademark), PHS (Personal Handy-phone System), and the like. Examples of wireless communication standards include WiMAX (Worldwide Interoperability for Microwave Access), IEEE802.11, Bluetooth (registered trademark), IrDA, NFC (Near Field Communication), and the like. The communication unit 6 may support one or more of the communication standards described above.

  The receiver 7 outputs the audio signal transmitted from the controller 10 as audio. The microphone 8 converts the voice of the user or the like into a voice signal and transmits it to the controller 10. The smartphone 1 may further include a speaker in addition to the receiver 7. The smartphone 1 may further include a speaker instead of the receiver 7.

  The storage 9 stores programs and data. The storage 9 is also used as a work area for temporarily storing the processing result of the controller 10. The storage 9 may include any storage device such as a semiconductor storage device and a magnetic storage device. The storage 9 may include a plurality of types of storage devices. The storage 9 may include a combination of a portable storage medium such as a memory card and a storage medium reading device.

  The programs stored in the storage 9 include an application executed in the foreground or the background and a control program that supports the operation of the application. For example, the application displays a predetermined screen on the display 2A, and causes the controller 10 to execute processing according to the gesture detected by the touch screen 2B. The control program is, for example, an OS. The application and the control program may be installed in the storage 9 via wireless communication by the communication unit 6 or a storage medium.

  The storage 9 stores, for example, a control program 9A, a mail application 9B, a browser application 9C, and setting data 9Z. The mail application 9B provides an electronic mail function for creating, transmitting, receiving, and displaying an electronic mail. The browser application 9C provides a WEB browsing function for displaying a WEB page. The table 9D stores various tables such as a key assignment table. The arrangement pattern database 9E stores arrangement patterns such as icons displayed on the display 2A. The setting data 9Z provides various setting functions related to the operation of the smartphone 1.

  The control program 9A provides functions related to various controls for operating the smartphone 1. The control program 9A realizes a call by controlling the communication unit 6, the receiver 7, the microphone 8, and the like, for example. The function provided by the control program 9A includes a function of performing various controls such as changing information displayed on the display 2A according to a gesture detected via the touch screen 2B. Note that the functions provided by the control program 9A may be used in combination with functions provided by other programs such as the mail application 9B.

  The controller 10 is, for example, a CPU (Central Processing Unit). The controller 10 may be an integrated circuit such as a SoC (System-on-a-chip) in which other components such as the communication unit 6 are integrated. The controller 10 controls various operations of the smartphone 1 to realize various functions.

  Specifically, the controller 10 executes instructions included in the program stored in the storage 9 while referring to the data stored in the storage 9 as necessary, and the display 2A, the communication unit 6 and the like. Various functions are realized by controlling. The controller 10 may change the control according to detection results of various detection units such as the touch screen 2B, the button 3, and the acceleration sensor 15.

  For example, by executing the control program 9A, the controller 10 executes various controls such as changing information displayed on the display 2A according to a gesture detected via the touch screen 2B.

  The camera 12 is an in-camera that captures an object facing the front face 1A. The camera 13 is an out camera that captures an object facing the back face 1B.

  The external interface 14 is a terminal to which another device is connected. The external interface 14 may be a general-purpose terminal such as a universal serial bus (USB), a high-definition multimedia interface (HDMI), a light peak (thunderbolt), and an earphone microphone connector. The external interface 14 may be a dedicated terminal such as a dock connector. Devices connected to the external interface 14 include, for example, an external storage, a speaker, and a communication device.

  The acceleration sensor 15 detects the direction and magnitude of acceleration acting on the smartphone 1. The direction sensor 16 detects the direction of geomagnetism. The rotation detection sensor 17 detects the rotation of the smartphone 1. The detection results of the acceleration sensor 15, the azimuth sensor 16, and the rotation detection sensor 17 are used in combination in order to detect changes in the position and orientation of the smartphone 1.

  The smartphone 1 configured as described above can reduce power consumption. The configuration will be specifically described below.

FIG. 5 is a block diagram illustrating detailed functions of the communication unit 6 and the controller 10 (control unit) in the smartphone 1.
Note that the smartphone 1 is a wireless communication system that performs data communication, such as WiFi specified by IEEE 802.11, WiMAX specified by IEEE 802.16e (IEEE 802.16-2004), and a 3G wireless communication system (for example, CDMA2000_1xEVDO, W-CDMA, etc., hereinafter referred to as 3G system).

  The communication unit 6 includes a communication processing unit 61A corresponding to WiFi, a wireless unit 62A and an antenna 63A, a communication processing unit 61B (communication unit) corresponding to WiMAX, a wireless unit 62B and an antenna 63B, and communication processing corresponding to the 3G system. A unit 61C, a radio unit 62C, and an antenna 63C.

The communication processing units 61 (A, B, and C) control the corresponding wireless units 62 (A, B, and C), respectively, and control state transitions such as connection and disconnection to the wireless communication system.
The radio units 62 (A, B, and C) demodulate signals received from the corresponding antennas 63 (A, B, and C), supply the processed signals to the communication processing unit 61, and perform communication processing. The signal supplied from the unit 61 is modulated and transmitted from the antenna 63 to the external device.

The controller 10 performs predetermined control on the communication processing unit 61 (A, B, and C), and instructs state transition for power saving.
Specifically, when the data communication session in WiMAX is disconnected (lost), the controller 10 controls the communication processing unit 61B to search for a WiMAX base station over the timer value stored in the storage 9. I do. The timer value stored in the storage 9 is set to a first time (for example, 5 seconds or 50 seconds) when the power of the touch screen display 2 is on.

  The controller 10 controls the communication processing unit 61B to control the timer value stored in the storage 9 when the WiMAX session is disconnected (becomes out-of-service state) while the power of the touch screen display 2 is on. It searches for WiMAX base stations over (first time) and attempts to establish a session (communication connection). If the controller 10 succeeds in establishing a session, the controller 10 continues data communication in WiMAX. When the session establishment fails, the controller 10 displays on the touch screen display 2 that WiMAX communication is out of service.

When the controller 10 detects that data communication is not performed in WiMAX when the power of the touch screen display 2 is off, the controller 10 sets the timer value stored in the storage 9 to a second time shorter than the first time. (For example, 5 seconds or 0 seconds).
Here, the controller 10 also stores the data in the storage 9 even when the data communication is performed in WiMAX and the data communication is not performed in a state where the power of the touch screen display 2 is off. The timer value set is set to the second time.

When the touch screen display 2 is turned off and the data communication session in WiMAX is disconnected when data communication is not performed in WiMAX, the controller 10 controls the communication processing unit 61B to store the data. 9 searches for a WiMAX base station over the timer value (second time) stored in 9, and attempts to establish a session.
On the other hand, when the power of the touch screen display 2 is off and the data communication session in WiMAX is disconnected while data communication is being performed in WiMAX, the controller 10 controls the communication processing unit 61B to store the data. 9 searches for a WiMAX base station over the timer value (first time) stored in 9, and attempts to establish a session.

  When the session cannot be established by the search, the controller 10 shifts the communication processing unit 61B to a mode in which the search is not performed (for example, the communication processing unit 61B is in a shutdown state). This mode is preferably one that does not listen (receive a message from the base station). What does not listen means what does not have a listening interval, a listening window, etc., for example.

  Thereby, for example, the smartphone 1 lost WiMAX because the radio wave condition temporarily deteriorated. However, if the radio wave situation has improved in a short time and data communication is possible continuously, the WiMAX can be performed by the first time. A search is performed and the communication processing unit 61B is not shifted to a mode in which no search is performed. In addition, when data communication is not performed in WiMAX in a state where the power of the touch screen display 2 is off, the user of the smartphone 1 does not use communication by WiMAX. In this case, the smartphone 1 can suppress repeated establishment of a session and disconnection of a session in WiMAX by setting the timer value to a second time shorter than the first time. Therefore, the smartphone 1 can reduce power consumption while suppressing a decrease in convenience.

  In addition, when the timer value stored in the storage 9 is the second time, when the controller 10 detects that the power of the touch screen display 2 has changed from the off state to the on state, the controller 10 stores the storage value in the storage 9. The timer value being set is returned to the time before the second time, that is, the first time. Similarly, when the controller 10 detects that data communication in WiMAX has been performed when the timer value stored in the storage 9 is the second time, the controller 10 changes the timer value stored in the storage 9 to the first value. Set to 1 hour.

  By doing in this way, even after the timer value is set to the second time, the controller 10 is in a state where the power of the touch screen display 2 is turned on or data communication is performed. And the timer value can be set to the first time.

  In the above description, when the data communication session in WiMAX is disconnected when the power of the touch screen display 2 is off and data communication is not performed in WiMAX, the controller 10 causes the communication processing unit 61B to be disconnected. Control and attempt to establish a session for the second time, but is not limited to this.

  When the touch screen display 2 is powered off and the data communication session in WiMAX is disconnected in a state where data communication is not performed in WiMAX, the controller 10 does not attempt to establish a session, and does not attempt to establish a session. May be shifted to a mode in which no search is performed.

  In such a configuration, the controller 10 sets the timer value stored in the storage 9 to 0 when it detects that data communication is not performed in WiMAX when the power of the touch screen display 2 is off. That is, the time for trying to establish a session is invalidated. In addition, the controller 10 is stored in the storage 9 when the touch screen display 2 is turned off, and when the data communication is performed in WiMAX, the data communication is not performed. The timer value is 0, that is, the time for trying to establish a session is invalid (session establishment trial is invalid).

  By doing in this way, the smartphone 1 omits the process for re-establishing the session when data communication is not performed in the first wireless communication system in a state where the power of the touch screen display 2 is off. Therefore, power consumption can be further reduced.

FIG. 6 is a diagram illustrating a state transition pattern of the communication processing unit 61B in time series.
In the pattern shown in FIG. 6A, before time t2, the communication processing unit 61B holds a data communication session in WiMAX, and the active mode (IEEE802.16-2004) defined in IEEE802.16e (IEEE802.16-2004). Data communication).

  When the power of the touch screen display 2 is turned off at time t1, the controller 10 starts determining whether data communication in WiMAX is in the idle mode. At time t1, since data communication in WiMAX is in the active mode, the controller 10 does not change the timer value.

  At time t2, in response to the data communication in WiMAX changing from the active mode to the idle mode, the controller 10 detects that the data communication in WiMAX has changed from the active mode to the idle mode. The controller 10 changes the timer value stored in the storage 9 from the first time to the second time. When communication in WiMAX is disconnected in this state, the controller 10 controls the communication processing unit 61B to search for a WiMAX base station over the second time.

  When the power of the touch screen display 2 is turned on at time t3, the controller 10 changes the timer value stored in the storage 9 from the second time to the first time. In this state, when communication in WiMAX is disconnected, the controller 10 controls the communication processing unit 61B to search for a WiMAX base station for the first time.

  In the pattern shown in FIG. 6B, at time t10, data communication in WiMAX changes from the active mode to the idle mode.

  When the power of the touch screen display 2 is turned off at time t11, the controller 10 starts determining whether or not data communication in WiMAX is in the idle mode. At time t11, since data communication in WiMAX is in the idle mode, the controller 10 changes the timer value stored in the storage 9 from the first time to the second time. When communication in WiMAX is disconnected in this state, the controller 10 controls the communication processing unit 61B to search for a WiMAX base station over the second time.

  When the power of the touch screen display 2 is turned on at time t12, the controller 10 changes the timer value stored in the storage 9 from the second time to the first time. In this state, when communication in WiMAX is disconnected, the controller 10 controls the communication processing unit 61B to search for a WiMAX base station for the first time.

  FIG. 7 is a flowchart illustrating a process related to the change of the time value in the smartphone 1. This process is executed when communication is connected in WiMAX.

  In step S1, the controller 10 determines whether or not the touch screen display 2 is powered off. If this determination is YES, the controller 10 proceeds to step S2, and if this determination is NO, the controller 10 proceeds to step S5.

  In step S2, the controller 10 determines whether or not the WiMAX data communication session is in the idle mode. If this determination is YES, the process proceeds to step S3, and if the determination is NO, the process proceeds to step S5.

  In step S3, the controller 10 determines whether or not the time value stored in the storage 9 is the first time. If this determination is YES, the controller 10 moves the process to step S4. If this determination is NO, the controller 10 ends the process of this flowchart.

In step S4, the controller 10 sets the time value stored in the storage 9 to the second time.
In step S5, the controller 10 determines whether or not the time value stored in the storage 9 is the second time. If this determination is YES, the controller 10 moves the process to step S6. If this determination is NO, the controller 10 ends the process of this flowchart.
In step S6, the controller 10 sets the time value stored in the storage 9 to the first time.

FIG. 8 is a flowchart illustrating a process related to the transition of the communication processing unit 61B in the smartphone 1.
In step S11, the controller 10 determines whether or not the WiMAX communication in the communication processing unit 61B is disconnected. If this determination is YES, the controller 10 moves the process to step S12, and if this determination is NO, the controller 10 re-executes step S11.

  In step S <b> 12, the controller 10 controls the communication processing unit 61 </ b> B to search for a WiMAX base station based on the time value stored in the storage 9. The time value is set to either the first time or the second time in the process shown in FIG.

  In step S13, the controller 10 determines whether or not communication connection has been established in the communication processing unit 61B. When this determination is YES, the controller 10 moves the process to step S11, and when this determination is NO, the controller 10 moves the process to step S14.

  In step S14, the controller 10 determines whether or not the touch screen display 2 is off. If this determination is YES, the controller 10 proceeds to step S15, and if this determination is NO, the controller 10 proceeds to step S16.

  In step S15, the controller 10 shifts the communication processing unit 61B to a mode in which no search is performed. When this process ends, the controller 10 ends the process of this flowchart.

  In step S <b> 16, the controller 10 displays on the touch screen display 2 that WiMAX communication is out of the communication range. Thereafter, the controller 10 moves the process to step S12.

  As described above, according to the present embodiment, the smartphone 1 searches the WiMAX for the first time when the data communication session in the WiMAX is disconnected by the controller 10 while the touch screen display 2 is powered on. . In addition, when the data communication session in WiMAX is disconnected by the controller 10 in a state where data communication is not performed in WiMAX while the power of the touch screen display 2 is off, the smartphone 1 is more than the first time. A WiMAX search is performed over a short second time, and if a session cannot be established by the search, the communication processing unit 61B is shifted to a mode in which no search is performed.

  Thereby, the smart phone 1 can suppress that a session is established again after a session is cut | disconnected, and can reduce power consumption. In addition, since the smartphone 1 searches for WiMAX in the second time when the power of the touch screen display 2 is off and data communication is not performed in WiMAX, it is possible to suppress a decrease in convenience. . Therefore, the smartphone 1 can reduce power consumption while suppressing a decrease in convenience.

  As mentioned above, although embodiment of this invention was described, this invention is not restricted to embodiment mentioned above. Further, the effects described in the embodiments of the present invention only list the most preferable effects resulting from the present invention, and the effects of the present invention are not limited to those described in the above-described embodiments. Absent.

The configuration of the smartphone 1 shown in FIGS. 4 and 5 is an example, and may be changed as appropriate within a range not impairing the gist of the present invention.
For example, the display unit is the touch screen display 2 having a detection function by the touch screen 2B, but may be a display device having no detection function.
Further, the communication processing unit 61 has been described as corresponding to the WiFi, WiMAX, and 3G systems. However, the communication processing unit 61 is not limited to this, and may be another wireless communication system, and may support four or more wireless communication systems. It may be.

4 may be downloaded from another device through wireless communication by the communication unit 6. 4 may be stored in a storage medium that can be read by a reading device included in the storage 9. 4 is stored in a storage medium such as a CD, a DVD, or a Blu-ray that can be read by a reader connected to the external interface 14. May be.
Each program shown in FIG. 4 may be divided into a plurality of modules or may be combined with other programs.

  Moreover, although the above-mentioned embodiment demonstrated a smart phone as an example of a wireless terminal device, a wireless terminal device is not limited to a smart phone. For example, the wireless terminal device may be a mobile phone, a portable personal computer, a digital camera, a media player, an electronic book reader, a portable electronic device such as a navigator or a game machine, or a communication-dedicated module specialized for a communication function. The wireless terminal device may be a stationary electronic device such as a desktop personal computer or a television receiver.

1 Smartphone (wireless terminal device)
2 Touch screen display (display unit)
6 Communication unit 10 Controller (control unit)
61B Communication processing unit (communication unit)

Claims (9)

A communication unit for performing wireless communication by a predetermined wireless communication system;
A display unit;
A control unit that searches for the predetermined wireless communication system over a first time when a communication session by the predetermined wireless communication system is disconnected in a state where the power of the display unit is on,
When the communication session by the predetermined wireless communication system is disconnected in a state where the power of the display unit is off and data communication by the predetermined wireless communication system is not performed, A wireless terminal device that searches for the predetermined wireless communication system over a second time shorter than the first time. A communication unit for performing wireless communication by a predetermined wireless communication system;
A display unit;
A control unit that searches for the predetermined radio communication system when a communication session by the predetermined radio communication system is disconnected in a state where the power of the display unit is on,
Wherein, in the state of power supply of the display unit is turned off, when the communication by the predetermined said predetermined wireless communication system from a state in which the wireless communication system by the communication is being performed is shifted to a state of not being performed, the A wireless terminal device that does not search for a predetermined wireless communication system. A communication unit for performing wireless communication by a predetermined wireless communication system;
A display unit;
A control unit that searches for the predetermined wireless communication system for a predetermined time when a communication session by the predetermined wireless communication system is disconnected in a state where the power of the display unit is on,
The said control part is a radio | wireless terminal apparatus which shortens the said predetermined time, when it transfers to the state in which data communication is not performed in the state in which the power supply of the said display part is OFF. When the power of the display unit transitions from an off state to an on state, the control unit returns to the time before shortening the predetermined time.
The wireless terminal device according to claim 3. A communication unit for performing wireless communication by a predetermined wireless communication system;
A display unit;
A control unit that searches for the predetermined radio communication system when a communication session by the predetermined radio communication system is disconnected in a state where the power of the display unit is on,
Wherein, in the power off condition of the display unit, communication by said predetermined wireless communication system is performed, the communication session by the predetermined wireless communication system is disconnected, the predetermined wireless communication system A wireless terminal device that invalidates the search. Wherein, in the power off condition of the display unit, when a communication session in a state where data communication in the predetermined wireless communication system is being performed is disconnected, the predetermined wireless communication system over a first time Search for
The radio | wireless terminal apparatus of any one of Claim 1 to 5. A program for controlling a wireless terminal device including a communication unit that performs wireless communication using a predetermined wireless communication system, and a display unit,
In power-on state of the display unit, and wherein when the communication session by the predetermined wireless communication system is disconnected, the line intends function searches for the predetermined wireless communication system over a first time,
When the communication session by the predetermined wireless communication system is disconnected in a state where the power of the display unit is off and communication by the predetermined wireless communication system is not performed, the time is shorter than the first time. And a function of searching for the predetermined wireless communication system over a second time . A program for controlling a wireless terminal device including a communication unit that performs wireless communication using a predetermined wireless communication system, and a display unit,
A function of performing a search for the predetermined wireless communication system when a communication session by the predetermined wireless communication system is disconnected in a state where the power of the display unit is on;
When the display unit is turned off and a transition is made from a state in which communication by the predetermined wireless communication system is performed to a state in which communication by the predetermined wireless communication system is not performed, the predetermined wireless communication system And a function for prohibiting the search of the program. A program for controlling a wireless terminal device including a communication unit that performs wireless communication using a predetermined wireless communication system, and a display unit,
A function of searching for the predetermined wireless communication system for a predetermined time when a communication session by the predetermined wireless communication system is disconnected in a state where the power of the display unit is on;
A program having a function of shortening the predetermined time when the display unit is turned off and the state shifts to a state where data communication is not performed.

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