JP2016134805A - Information processing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain higher antenna communication performance than standard radio quality with a simple structure.SOLUTION: When radio quality of an antenna (ANT) deteriorates, a radio quality comparison unit (22) compares the present radio quality with radio quality when the antenna (ANT) has another position and a shape. If the latter is higher, an antenna control unit (24) changes the present position and the shape of the antenna (ANT) to the other position and the shape.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an information processing apparatus, for example, an information processing apparatus including an antenna for wireless communication.

  An information processing apparatus having a wireless communication function transmits and receives wireless signals using an antenna. The radio quality (received signal level, transmitted signal level) of the antenna provided in the information processing apparatus can be deteriorated due to various causes.

  For example, the antenna is often arranged in the frame of the information processing apparatus so as not to hinder the user from viewing the screen. However, the frame of the information processing apparatus may be covered by a user's hand holding the information processing apparatus. In this case, the wireless quality of the antenna may be deteriorated.

  Therefore, an information processing apparatus that includes a plurality of antennas and performs wireless communication using an antenna with higher wireless quality has been developed. For example, the portable information terminal (information processing apparatus) described in Patent Literature 1 switches the antenna used for wireless communication according to the information display direction on the portable information terminal.

Japanese Patent Laying-Open No. 2005-303856 (released on October 27, 2005) Japanese Patent No. 3664721 (published on June 12, 2003) Japanese Patent No. 4814223 (released on October 12, 2006)

  However, an information processing apparatus including a plurality of antennas has a complicated configuration of a circuit connected to the antenna as compared with an information processing apparatus including a single antenna. Occupies a large area.

  Further, even when the information processing apparatus includes a plurality of antennas, there is a possibility that the radio quality of all the antennas is deteriorated at the same time. For example, when a user's hand having an information processing apparatus covers all antennas, the radio quality of all antennas deteriorates simultaneously. In such a case, even if the antenna to be used is switched, the radio quality of the antenna is not sufficiently improved.

  The present invention has been made in view of the above problems, and an object thereof is to provide an information processing apparatus capable of improving the radio quality of an antenna with a simple configuration.

  In order to solve the above-described problem, an information processing apparatus according to one embodiment of the present invention includes an antenna including a plurality of conductor elements, and provides conduction and non-conduction between the plurality of conductor elements. An information processing apparatus in which at least one of the position and shape of the antenna changes by switching with a switching element provided between the first wireless quality and the second wireless quality. When the radio quality judgment unit judges whether the radio quality is high or the second radio quality is higher than the first radio quality, the antenna indicates the second radio quality. And an antenna state changing unit for changing the state.

  According to one embodiment of the present invention, there is an effect that the communication performance of an antenna can be made higher than a reference wireless quality with a simple configuration.

1 is a block diagram illustrating a configuration of a portable information terminal according to Embodiment 1. FIG. 3 is a schematic diagram illustrating a configuration of an antenna pattern unit included in the portable information terminal according to Embodiment 1. FIG. It is a figure which shows the relationship between the position where the side of the portable information terminal which concerns on Embodiment 1 was touched, and the change of the position of the antenna in the antenna pattern part with which the said portable information terminal was equipped. (A) and (b) are the figures which show the change of the position or shape of the antenna in the antenna pattern with which the portable information terminal which concerns on Embodiment 1 was equipped. 4 is a flowchart illustrating a flow of antenna state change processing executed by a control unit included in the portable information terminal according to the first embodiment. 10 is a flowchart showing a flow of antenna state change processing according to the second embodiment. (A) and (b) are the figures which show the example of the change of the position of the antenna by the antenna mode change process which concerns on Embodiment 2. FIG. It is a figure which shows an example of the lookup table memorize | stored in the memory | storage part of the portable information terminal which concerns on Embodiment 3. FIG.

Embodiment 1
Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS.

(Configuration of portable information terminal 1)
A configuration of a portable information terminal 1 (information processing apparatus) (hereinafter abbreviated as a terminal 1) according to the present embodiment will be described with reference to FIG. FIG. 1 is a block diagram showing the configuration of the terminal 1. The terminal 1 can perform wireless communication with an external device or the like using the antenna ANT (see FIGS. 2 and 3). As illustrated in FIG. 1, the terminal 1 includes an antenna pattern unit 10, a control unit 20, a power supply unit 30, a storage unit 40, a touch sensor 50, and a wireless communication unit 60.

  The power supply unit 30 supplies power to each unit of the terminal 1 (at least the antenna pattern unit 10, the control unit 20, the storage unit 40, the touch sensor 50, and the wireless communication unit 60).

  In the storage unit 40, information related to radio quality (described later) calculated by the radio quality calculation unit 21 of the control unit 20 is stored as radio quality information.

  The touch sensor 50 is disposed so as to substantially overlap the antenna pattern portion 10 (or antenna ANT) on the surface on which the antenna pattern portion 10 (or antenna ANT) is disposed (see FIG. 3).

  The wireless communication unit 60 communicates with an external wireless communication device using the antenna pattern unit 10 (or the antenna ANT).

  The antenna pattern unit 10 and the control unit 20 will be described below.

(Antenna pattern part 10)
FIG. 2 is a schematic diagram illustrating the configuration of the antenna pattern unit 10. As shown in FIG. 2, the antenna pattern unit 10 includes a plurality of conductor elements 11 (conductor elements) and a plurality of switching elements 12. In the antenna pattern portion 10, the plurality of conductor elements 11 are arranged in a square lattice pattern. Switching elements 12 are respectively disposed between adjacent conductor elements 11. The switching element 12 operates so as to switch between conduction / non-conduction of the adjacent conductor element 11. The operation of the switching element 12 is controlled by the control unit 20. As the configuration of such an antenna pattern unit 10, for example, the configuration of the antenna described in Patent Document 2 can be applied. The conductor elements 11 may be arranged in a pattern other than a square lattice (for example, a triangular lattice, a rectangular lattice, or a hexagonal lattice).

  The antenna pattern unit 10 is disposed on the side surface of the terminal 1 (see FIG. 3). However, the antenna pattern unit 10 may be disposed on the screen (or the frame) or may be disposed on the back surface.

  The conductor constituting the conductor element 11 may be a metal or indium tin oxide (ITO). In the latter configuration, since the conductor element 11 is transparent, the antenna pattern portion 10 is also almost transparent. Therefore, even when the antenna pattern unit 10 is arranged on the screen of the terminal 1, the user can visually recognize the video displayed on the screen without being interrupted by the antenna pattern unit 10. Therefore, in the latter configuration, the antenna pattern unit 10 may be disposed anywhere on the terminal 1. As a method for arranging the antenna pattern unit 10 on the screen, for example, the method described in Patent Document 3 can be applied.

  In FIG. 2, the conductor element 11 is a square, but may have other shapes (for example, a triangle or a rectangle). Further, it is not necessary that all the conductor elements 11 included in the antenna pattern portion 10 have the same shape. For example, some of the conductor elements 11 may have a square, while the remaining conductor elements 11 may have a rectangle. Furthermore, in the antenna pattern portion 10, the conductor elements 11 may be arranged in a rectangular lattice shape, a triangular lattice shape, or a hexagonal lattice shape instead of a square lattice shape.

  The switching element 12 may be a switching transistor, a surface PIN (SPIN) device, or an RF-MEMS (Radio Frequency-Micro Electro Mechanical System) transistor.

  As shown in FIG. 2, in the antenna pattern portion 10, an antenna ANT is formed by conducting a plurality of conductor elements 11 via switching elements 12. The isolated conductor element 11, that is, the conductor element 11 that is not electrically connected to the adjacent conductor element 11, does not form the antenna ANT. The state (position and shape) of the antenna ANT is determined depending on which of the plurality of conductor elements 11 are conductive.

  The antenna ANT receives a radio signal transmitted from an external device. The antenna ANT transmits a radio signal by being supplied with a signal output from the radio communication unit 60.

(Control unit 20)
As shown in FIG. 1, the control unit 20 includes a radio quality calculation unit 21, a radio quality comparison unit 22 (radio quality determination unit), an antenna mode determination unit 23, and an antenna control unit 24 (antenna mode change unit). Yes. The control unit 20 executes an antenna state change process α described later.

  The radio quality calculation unit 21 acquires information indicating the reception signal level and transmission signal level of the radio signal from the radio communication unit 60. Then, the radio quality calculation unit 21 calculates the reception quality of the antenna ANT from the reception signal level and the transmission quality of the antenna ANT from the transmission signal level. Then, the wireless quality of the antenna (ANT) is calculated using the information indicating the reception quality and the information indicating the transmission quality. The radio quality calculation unit 21 outputs information indicating the calculated radio quality (radio quality information) to the radio quality comparison unit 22 and stores it in a predetermined storage area of the storage unit 40. Here, the radio quality may be the strength of the received signal. Further, a wireless quality calculation formula may be defined so that the higher the reception signal level (or reception signal strength) and the transmission signal level (or transmission signal strength), the higher the radio quality of the antenna (ANT). .

  The wireless quality comparison unit 22 uses the wireless quality information input from the wireless quality calculation unit 21 to determine whether or not the wireless quality has deteriorated (deteriorated). More specifically, the wireless quality comparison unit 22 determines whether or not the wireless quality calculated by the wireless quality calculation unit 21 is lower than the previously calculated wireless quality (reference value). The radio quality comparison unit 22 outputs a determination result indicating whether or not the radio quality has deteriorated to the antenna state determination unit 23.

  When the determination result that the wireless quality is deteriorated is input from the wireless quality comparison unit 22, the antenna state determination unit 23 changes the state (position and shape) of the antenna ANT from the first mode to the second mode. Decide to change to. At this time, the antenna mode determination unit 23 may determine to change the mode of the antenna ANT according to the algorithm (second embodiment) or may determine to change to another predetermined mode. Good (Embodiment 3). Alternatively, when the touch sensor 50 detects a touch and the wireless quality is low, the antenna state determination unit 23 determines the position (and shape) of the antenna ANT based on the position where the touch is detected. May be determined to be changed. In the present embodiment, the last configuration will be described.

  The antenna control unit 24 changes the current first mode of the antenna ANT to the second mode notified from the antenna mode determination unit 23. Specifically, the antenna control unit 24 switches conduction / non-conduction between the plurality of conductor elements 11 by controlling the switching element 12. Thereby, since the combination of the conductive element 11 that is conducted changes, the state of the antenna ANT formed by the conductive element 11 that is conducted also changes.

  An example in which the antenna control unit 24 changes the position of the antenna ANT will be described with reference to FIGS. 3 and 4A and 4B. FIG. 3 is a diagram illustrating a relationship between a position where the user U touches the terminal 1 and a change in the position of the antenna ANT. 4A and 4B are diagrams showing changes in the position (and shape) of the antenna ANT in the antenna pattern section 10, respectively.

  As shown in FIG. 3, it is assumed that the antenna ANT initially exists in the vicinity of the position where the user's finger U touches the terminal 1. Since the finger U overlaps a part of the antenna ANT, the antenna ANT cannot efficiently transmit and receive a radio signal. Therefore, the wireless quality of the antenna ANT may be lower than the wireless quality when the user's finger U does not touch the terminal 1 (or when the finger U does not overlap the antenna ANT).

  When the wireless quality is deteriorated, the antenna state determination unit 23 first acquires information (touch position information) indicating the position where the touch is detected from the touch sensor 50. Next, the antenna state determination unit 23 selects a position (for example, a lower position in the antenna pattern unit 10 in FIG. 3) away from the position where the touch is detected in the antenna pattern unit 10.

  As shown to (a) of FIG. 4, the antenna control part 24 switches conduction | electrical_connection / non-conduction of the some conductor element 11 with which the antenna pattern part 10 was provided. Thereby, as shown in FIG. 3, the antenna ANT moves to a position away from the finger U (that is, a position selected by the antenna mode determination unit 23).

  In FIG. 4A, only the position of the antenna ANT is changed. However, the antenna control unit 24 may change at least one of the position and shape of the antenna ANT.

  In FIG. 4B, conduction / non-conduction of the conductor element 11 is switched so that the shape of the antenna ANT changes. The directivity, gain, impedance matching, etc. of the antenna ANT depend on the shape of the antenna ANT. Therefore, the radio quality of the antenna ANT may be improved by changing the shape of the antenna ANT.

  In the antenna mode changing process α described later, after the antenna control unit 24 changes the position (and shape) of the antenna ANT, the radio quality comparison unit 22 acquires the radio quality information from the radio quality calculation unit 21 again. To do. If the radio quality of the antenna ANT after the mode change exceeds the radio quality of the antenna ANT before the mode change, the antenna mode determination unit 23 determines the position (and shape) of the antenna ANT after the mode change. Decide to maintain. On the other hand, when the radio quality of the antenna ANT after the mode change does not exceed the radio quality of the antenna ANT before the mode change, the antenna mode determination unit 23 determines the position (and shape) of the antenna ANT after the mode change. Is returned to the position (and shape) of the antenna ANT before the mode change.

(Flow of antenna state change processing α)
The flow of the antenna mode change process α executed by the control unit 20 will be described with reference to FIG. FIG. 5 is a flowchart showing the flow of the antenna state changing process α. The antenna state change process α is started, for example, when the terminal 1 receives an incoming call. In the following, a flow in which the position a of the antenna ANT is changed to the position c will be described. However, in the same flow, at least one of the position and the shape of the antenna ANT may be changed.

  As shown in FIG. 5, in the antenna state change process α, first, the wireless quality calculation unit 21 calculates the wireless quality of the antenna ANT at the position a (S101). The wireless quality calculation result in S101 is hereinafter referred to as wireless quality A.

  The wireless quality calculation unit 21 measures the wireless quality of the antenna ANT at the position a again after a predetermined time has elapsed since the wireless quality A was obtained (S102). The wireless quality calculation result in S102 is hereinafter referred to as wireless quality B.

  Next, the radio quality comparison unit 22 determines whether or not the radio quality of the antenna ANT is deteriorated (that is, whether or not the radio quality B is lower than the radio quality A) (S103).

  If the radio quality of the antenna ANT has not deteriorated (No in S103), the antenna state determination unit 23 determines not to change the position a of the antenna ANT (S109), and the antenna state change process α returns to S101.

  On the other hand, when the wireless quality of the antenna ANT is deteriorated (Yes in S103), the antenna state determination unit 23 acquires touch position information from the touch sensor 50 (S104). And the antenna mode determination part 23 determines what kind of position the position a of the antenna ANT is changed based on the acquired touch position information. For example, the antenna state determination unit 23 may determine the position c after the change of the antenna ANT so that the position where the touch is detected does not overlap the antenna ANT.

  Next, the antenna control unit 24 changes the position a of the antenna ANT to another position c (S105). Thereafter, the wireless quality calculation unit 21 measures the wireless quality of the antenna ANT (S106). The wireless quality calculation result in S106 is hereinafter referred to as wireless quality C.

  Thereafter, the radio quality comparison unit 22 determines whether the radio quality C of the antenna ANT at the position c after the change exceeds the radio quality B of the antenna ANT at the position a before the change (S107).

  When the radio quality C exceeds the radio quality B (Yes in S107), the antenna state determination unit 23 determines to maintain the position c of the antenna ANT (S108). Then, the antenna state change process α returns to S101.

  On the other hand, when the radio quality C does not exceed the radio quality B (No in S107), the antenna control unit 24 returns the position c of the antenna ANT to the position a (S109). Then, the antenna state change process α returns to S101.

  It should be noted that the position c ′ is different from the position c, and the radio quality of the antenna ANT at the position c ′ may exceed the radio quality B of the antenna ANT at the position a. Also about ', you may perform the process of S105-S107. In this configuration, when the radio quality C of the antenna ANT at a certain position c ′ exceeds the radio quality B (Yes in S107), the antenna state determination unit 23 determines to maintain the position c ′ (S108). .

[Embodiment 2]
The following will describe another embodiment of the present invention with reference to FIG. For convenience of explanation, members having the same functions as those described in the embodiment are given the same reference numerals, and descriptions thereof are omitted.

  In the antenna state changing process α described in the first embodiment, the antenna control unit 24 changes the position (or shape) of the antenna ANT based on the position where the touch is detected. In the antenna mode change process β described in the present embodiment, the antenna control unit 24 changes the mode of the antenna ANT according to an algorithm.

  The above algorithm only needs to change at least one of the position and shape of the antenna ANT. For example, as shown in FIG. 4A, the algorithm may move the position of the conductive switching element 12 by a predetermined distance in a predetermined direction.

  According to the configuration of the present embodiment, the antenna control unit 24 changes the state of the antenna ANT regardless of the touch position information. The configuration of the present embodiment is effective when the cause of the deterioration of the radio quality of the antenna ANT is not the finger U touching the terminal 1. However, as described in a later-described modification, the antenna ANT may be changed using the touch position information together with the algorithm.

(Flow of antenna mode change processing β)
The flow of the antenna state change process β executed by the control unit 20 will be described with reference to FIGS. 6 and 7A and 7B. FIG. 6 is a flowchart showing the flow of the antenna mode changing process β. FIGS. 7A and 7B are other diagrams showing changes in the state of the antenna ANT in the antenna pattern section 10.

  S101 to S103 of the antenna state change process β are the same as S101 to S103 of the antenna state change process α. Therefore, in the following, the steps after S103 of the antenna state change process β will be described.

  If the radio quality of the antenna ANT has not deteriorated in S103 of the antenna state change process β (No in S103), the antenna state determination unit 23 determines not to change the state a of the antenna ANT (S210), and the antenna The state change process β returns to S101.

  On the other hand, if the radio quality of the antenna ANT is degraded in S103 of the antenna mode change process β (Yes in S103), the antenna control unit 24 changes the mode a of the antenna ANT to another mode (S204). .

  Thereafter, the wireless quality calculation unit 21 measures the wireless quality of the antenna ANT (S205).

  Here, in S205, the radio quality may be measured for one antenna ANT having a mode different from mode a, or the radio quality is measured for each of a plurality of antennas ANT having a mode different from mode a. May be.

  In the present embodiment, as shown in FIGS. 7A and 7B, it is assumed that the radio quality is measured for two antennas ANT having modes c1 and c2 different from the current mode a of the antenna ANT. In this case, according to the algorithm for moving the portion of the antenna ANT extending in the vertical direction in the horizontal direction (left and right) of the drawing, the antenna ANT is changed from the mode a shown in FIG. 2 to the mode shown in FIGS. It is changed to c1 and c2. First, the state a of the antenna ANT is changed to the state c1 shown in FIG. 7A (S204), and the radio quality of the antenna ANT having the state c1 is measured (S205). Thereafter, the state c1 of the antenna ANT is changed to the state c2 shown in FIG. 7B (S204), and the radio quality of the antenna ANT having the state c2 is measured (S205). Hereinafter, the measurement result of the radio quality of the antenna ANT having the mode c1 is referred to as radio quality C1, and the measurement result of the radio quality of the antenna ANT having the mode c2 is referred to as radio quality C2. Here, as can be seen from FIGS. 7A and 7B, the antenna ANT has a smaller area where the antenna ANT and the user U overlap in the case of having the mode c2 than in the case of having the mode c1. Therefore, the radio quality C2 is likely to be higher than the radio quality C1.

  Subsequently, the radio quality comparison unit 22 determines whether or not the radio quality C1 of the antenna ANT having the mode c1 after the change exceeds the radio quality B of the antenna ANT having the mode a before the change (S206). When the radio quality C1 exceeds the radio quality B (Yes in S206), the antenna control unit 24 changes the mode a of the antenna ANT to the mode c1 (S207). Then, the antenna state change process β returns to S101.

  On the other hand, when the radio quality C1 does not exceed the radio quality B (No in S206), the radio quality comparison unit 22 determines that the radio quality C2 of the antenna ANT having the mode c2 after the change is the antenna ANT having the mode a before the change. It is determined whether or not the wireless quality B exceeds (S208).

  When the radio quality C2 exceeds the radio quality B (Yes in S208), the antenna control unit 24 changes the mode a of the antenna ANT to the mode c2 (S209). Then, the antenna state change process β returns to S101.

  On the other hand, when the wireless quality C2 does not exceed the wireless quality B (No in S208), the antenna state determination unit 23 determines to maintain the state a of the antenna ANT (S210). Then, the antenna state change process β returns to S101.

(Modification)
In the present embodiment, in S204 to S206 of the antenna mode change process β, the radio quality C1 and C2 of the antenna ANT having the modes c1 and c2 determined according to the algorithm are compared with the radio quality B of the current antenna ANT. Explained.

  In this modification, when the position of the antenna ANT determined according to the algorithm overlaps with the position where the touch is detected (touch position), the current state of the antenna ANT is changed to the state determined according to the algorithm. It does not have to be. In other words, in the antenna state change process β according to the present modification, the antenna ANT is only in a state in which the position of the antenna ANT in the state is separated from the touch position among the states determined according to the algorithm. Be changed.

  In the present modification, the antenna state determination unit 23 acquires touch position information (information indicating a position where a touch is detected) from the touch sensor 50 before S204 of the antenna state change process β described above. Then, the antenna state determination unit 23 determines whether or not the antenna ANT at the position determined according to the algorithm does not overlap the position where the touch is detected.

  When the antenna ANT at the position determined according to the algorithm and the position where the touch is detected do not overlap, the antenna control unit 24 changes the mode a of the antenna ANT to the state determined according to the algorithm. (S204). Thereafter, the processes after S205 of the antenna state changing process β described above are executed.

  On the other hand, when the position of the antenna ANT having the state determined according to the algorithm and the position where the touch is detected overlap, the process after S204 of the antenna state change process β is not executed. Therefore, the antenna control unit 24 does not change the state a of the antenna ANT to the state determined according to the algorithm.

  Alternatively, when the position of the antenna ANT having the state determined according to the algorithm and the position where the touch is detected overlap, instead of the process after S204 of the antenna state change process β, the process after S105 of the antenna state change process α The same process may be executed.

[Embodiment 3]
Another embodiment of the present invention will be described below with reference to FIG. For convenience of explanation, members having the same functions as those described in the embodiment are given the same reference numerals, and descriptions thereof are omitted.

  In the second embodiment, in the antenna mode changing process β, the mode of the antenna ANT is changed according to the algorithm. In the present embodiment, the state (position and shape) of the antenna ANT is changed to a predetermined state (position and shape).

  In the present embodiment, a look-up table (mode information) (not shown) describing the mode (position and shape) of the antenna ANT is stored in advance in the storage unit 40 shown in FIG. The lookup table includes data defining one or more modes (for example, mode c1 and mode c2).

  In the look-up table, information related to the state a of the antenna ANT before the change of the state and information related to the states c3 to c5 of the antenna ANT after the change of the state may be associated with each other. In this configuration, the antenna mode determination unit 23 selects one of modes c3 to c5 (see FIG. 8) associated with the antenna mode a in the lookup table.

  Alternatively, in the lookup table, the (current) wireless communication method of the terminal 1 may be associated with information regarding the state of the antenna ANT suitable for the method. In this configuration, the antenna state determination unit 23 selects the state c of the antenna ANT according to the wireless communication method of the terminal 1 (for example, the frequency of the wireless signal, the communication method of the terminal 1).

  In the lookup table shown in FIG. 8, the frequency of the radio signal and the communication scheme of the terminal 1 are associated with information on the frequency and the modes c3 to c5 of the antenna ANT suitable for the communication scheme. The radio quality of the antenna ANT is greatly influenced by the frequency of the radio signal and the communication method of the terminal 1. Therefore, the antenna mode determination unit 23 selects an appropriate mode from the modes c3 to c5 so that the radio quality of the antenna ANT is improved as much as possible according to the frequency of the radio signal and the communication method of the terminal 1. . For example, when the communication method of the terminal 1 is “D”, the antenna state determination unit 23 selects the state c3 of the antenna ANT described at the top of FIG.

  In the antenna state changing process β according to the present embodiment, the antenna state determining unit 23 refers to the lookup table from the storage unit 40 in S204. Then, a mode different from the mode a of the antenna ANT is selected from the modes described in the referenced lookup table. Here, the antenna mode determination unit 23 may determine to change the mode a of the antenna ANT to a mode associated with the mode a in the lookup table. The antenna control unit 24 changes the antenna mode a to the mode determined by the antenna mode determination unit 23.

  Thereafter, in S205, the radio quality of the antenna ANT after the change of mode is measured again. Here, when the lookup table includes data defining a plurality of modes, in S205, the radio quality is measured for the antenna ANT having the plurality of modes. Since the flow after S206 of the antenna state changing process β according to the present embodiment is as described in the second embodiment, the description thereof is omitted in the present embodiment.

(Modification)
In a modification of the present embodiment, as in the modification of the second embodiment, the antenna ANT has a position determined in accordance with an algorithm, and the position of the antenna ANT in that state is separated from the touch position. It may be changed only in the manner.

  In the antenna state change process β according to this modification, when the position of the antenna ANT having the state determined based on the lookup table and the touch position overlap, the processes after S204 are not executed. Therefore, the position of the antenna ANT is not changed to a position that overlaps the touch position.

  Alternatively, when the position of the antenna ANT having the state determined based on the look-up table and the touch position overlap, instead of the process after S204 of the antenna state change process β, the process after S105 of the antenna state change process α Equivalent processing may be performed.

  In this modification, when the radio quality C1 of the antenna having the mode c1 (see FIG. 7A) exceeds the radio quality B, the radio quality of the antenna having the mode c2 (see FIG. 7B). Regardless of whether or not C2 exceeds the radio quality B, the antenna mode determination unit 23 immediately determines to change the mode a of the antenna ANT to the mode c1. Alternatively, the antenna mode determination unit 23 determines which radio quality is better compared to the radio quality C1 of the antenna ANT having the mode c1 and the radio quality C2 of the antenna ANT having the mode c2. Either the mode c1 or the mode c2 may be selected so that the wireless quality is improved. After the antenna mode determination unit 23 selects one of the mode c1 and the mode c2, the antenna control unit 24 changes the antenna mode a to the mode c1 or the mode c2 selected by the antenna mode determination unit 23.

[Example of software implementation]
The control unit 20 of the portable information terminal 1 may be realized by a logic circuit (hardware) formed in an integrated circuit (IC chip) or by software using a CPU (Central Processing Unit). Also good.

  In the latter case, the portable information terminal 1 includes a CPU that executes instructions of a program that is software that realizes each function, and a ROM (Read Only Memory) in which the program and various data are recorded so as to be readable by a computer (or CPU). ) Or a storage device (these are referred to as “recording media”), a RAM (Random Access Memory) for expanding the program, and the like. And the objective of this invention is achieved when a computer (or CPU) reads the said program from the said recording medium and runs it. As the recording medium, a “non-temporary tangible medium” such as a tape, a disk, a card, a semiconductor memory, a programmable logic circuit, or the like can be used. The program may be supplied to the computer via an arbitrary transmission medium (such as a communication network or a broadcast wave) that can transmit the program. The present invention can also be realized in the form of a data signal embedded in a carrier wave in which the program is embodied by electronic transmission.

  In the antenna state change process, the radio quality B (first quality) of the antenna ANT at the same position a after a predetermined time has elapsed after the radio quality A of the antenna ANT at the position a is obtained. Radio quality) and radio quality A were compared, and then radio quality B and radio quality C (second radio quality) were compared. However, the present invention is not limited to this, and the wireless quality may be compared using a predetermined reference value (first wireless quality) instead of the wireless quality B. In this case, since the state of the antenna ANT is determined based on the result of the comparison between the predetermined reference value and the wireless quality, the antenna state change process may be performed more efficiently.

[Summary]
An information processing apparatus (portable information terminal 1) according to aspect 1 of the present invention includes an antenna (ANT) including a plurality of conductor elements (conductor elements 11), and includes conduction between the plurality of conductor elements. An information processing apparatus in which at least one of a position and a shape of the antenna is changed by switching non-conduction with a switching element (12) provided between the conductor elements, wherein the first wireless quality, A wireless quality determination unit (wireless quality comparison unit 22) that compares the two wireless qualities with each other and determines which is higher, and when the second wireless quality is higher than the first wireless quality, the wireless quality determination An antenna state changing unit (antenna control unit 24) that changes the state of the antenna to the state indicating the second wireless quality.

  According to said structure, when 2nd radio | wireless quality is higher than 1st radio | wireless quality, the aspect of an antenna is changed into the aspect which shows 2nd radio | wireless quality (at least one of the position and shape of an antenna is Be changed). Therefore, the antenna has a radio quality higher than at least the first radio quality.

  In the information processing apparatus according to aspect 2 of the present invention, in the aspect 1, the first wireless quality is wireless quality when the antenna has the current first aspect, and the second wireless quality is The wireless quality in the case where the antenna has the second mode after changing from the current mode may be used.

  According to the above configuration, when the radio quality of the antenna having another mode (second mode) different from the current mode (first mode) is higher than the current radio quality, The mode is changed to the second mode. Therefore, the radio quality of the antenna is improved from the current level.

  The information processing apparatus according to aspect 3 of the present invention further includes a touch sensor (50) provided to overlap the conductor element in the aspect 1 or 2, and the antenna state change unit is detected by the touch sensor. The position of the antenna in the second mode may be determined at a position away from the touched position.

  According to the above configuration, the antenna mode is changed to the second mode even when the antenna having the first mode is covered with an object to be touched, such as a user's finger. The antenna moves to a position away from the object. Therefore, the radio signal transmitted / received from the antenna is not obstructed by the object, which may improve the radio quality.

  In the information processing apparatus according to aspect 4 of the present invention, in any one of aspects 1 to 3, the conductor element of the antenna may be transparent.

  According to the above configuration, since the conductive element is transparent, even when the antenna is arranged on the screen of the information processing apparatus, the user can display the video displayed on the screen without being disturbed by the antenna. Can be visually recognized. Therefore, the antenna can be arranged at any position including the screen of the information processing apparatus.

  In the information processing apparatus according to aspect 5 of the present invention, in any one of the aspects 1 to 4, the second aspect is that at least a part of the antenna having the first aspect is moved a predetermined distance in a predetermined direction. It may be in the form.

  According to the above configuration, the second mode can be easily determined based on the first mode.

  In the information processing apparatus according to aspect 6 of the present invention, in any of the above aspects 1 to 4, the aspect indicating the second wireless quality is referred to aspect information including information on the aspect that the antenna can take, The mode selected from the modes that the antenna can take may be used.

  According to the above configuration, the mode of the antenna can be changed to any mode as long as the mode is described in the mode information.

  The information processing apparatus according to each aspect of the present invention may be realized by a computer. In this case, the information processing apparatus is operated by causing the computer to operate as each unit (limited to software elements) included in the information processing apparatus. A control program for an information processing apparatus realized by a computer and a computer-readable recording medium on which the control program is recorded also fall within the scope of the present invention.

  The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention. Furthermore, a new technical feature can be formed by combining the technical means disclosed in each embodiment.

  The present invention can be used for an information processing apparatus.

1 Portable information terminal (information processing device)
11 Conductor element (conductor element)
12 switching element 22 wireless quality comparison part (wireless quality judgment part)
24 Antenna control unit (antenna mode change unit)
50 touch sensor ANT antenna

Claims (6)

An antenna composed of a plurality of conductor elements, and switching between conduction and non-conduction between the plurality of conductor elements by a switching element provided between the conductor elements, so that at least the position and shape of the antenna One of the information processing devices changes,
A wireless quality determination unit that compares the first wireless quality with the second wireless quality and determines which is higher;
An antenna state changing unit that changes the antenna to a state indicating the second wireless quality when the wireless quality determining unit determines that the second wireless quality is higher than the first wireless quality. An information processing apparatus characterized by that. The first radio quality is radio quality when the antenna has the current first mode, and the second radio quality is second after the antenna is changed from the current first mode. The information processing apparatus according to claim 1, wherein the information processing apparatus has wireless quality in the case of having the following aspect. A touch sensor provided to overlap the conductor element;
The information processing apparatus according to claim 1, wherein the antenna state changing unit determines the position of the antenna in the second state at a position away from the position of the touch detected by the touch sensor. . The information processing apparatus according to claim 1, wherein the conductor element of the antenna is transparent. The second mode is a mode in which at least a part of the antenna having the first mode has been moved in a predetermined direction by a predetermined distance. 5. Information processing device. The mode indicating the second radio quality is a mode selected from modes that can be taken by the antenna with reference to mode information including information on modes that can be taken by the antenna. The information processing apparatus according to any one of 1 to 4.

Images