JP5094559B2 - Wireless communication terminal and wireless communication method - Google Patents

Description

  The present invention relates to a wireless communication terminal and a wireless communication method capable of reducing electromagnetic waves absorbed by a human body and receiving electromagnetic waves satisfactorily.

  As is well known, a card-type terminal main body and a terminal main body provided as a wireless communication terminal that is attached to a mobile terminal typified by a notebook computer or a portable information terminal and communicates while moving or at a destination. Some include a movable antenna unit configured to change the attitude with respect to the terminal main body unit. That is, the attitude of the movable antenna unit is changed, and the polarization level of the radio wave (electromagnetic wave) is adjusted for the movable antenna unit to improve the radio wave reception level.

  This type of wireless communication terminal has a SAR (Specific Absorption Rate) related to radio waves radiated by a movable antenna unit at a use position assumed for a mobile terminal to be attached (for example, on a thigh in a notebook computer). ) Is mechanically (for example, a stopper) limited so that the movable range of the movable antenna portion does not exceed the regulation value. Note that SAR refers to the amount of energy that electromagnetic waves are absorbed into a human tissue of unit mass per unit time.

Moreover, in the following Patent Document 1, the following mobile phone is disclosed as a mobile phone that allows the operator to maintain the correct holding posture of the mobile phone. This cellular phone has a contact pressure detecting means for detecting the state of a call and a non-call, an inclination angle detecting means for detecting a case inclination angle with respect to the vertical axis of the handset during a call, and a case inclination angle is preset. Warning means for warning when the inclination angle is out of range. That is, when the housing inclination angle deviates from the inclination angle range set as the correct holding posture, the operator is warned to recognize that the mobile phone is in the wrong holding posture, and the housing inclination angle Is to be within the tilt angle range.
JP 2002-208992 A

  However, the conventional techniques have the following problems.

  That is, in the technology that mechanically limits the movable range of the movable antenna unit, it is limited to improve the reception level by matching the movable antenna unit to the polarization direction of the electromagnetic wave, so that the improvement of call quality is also limited. There's a problem.

  In addition, when the wireless communication terminal is made to correspond to different mobile terminals (for example, a notebook personal computer and a portable information terminal), the movable range of the movable antenna unit according to the assumed use position of each mobile terminal and the mounting position of the movable antenna unit. There is a problem that the movable range is excessively limited.

  In addition, when different SAR regulation values are set in a plurality of countries, it is necessary to manufacture a configuration having mechanical restrictions such as stoppers according to the regulation values of each country. There is a problem that management costs are lost.

  Further, in the mobile phone described in the above-mentioned Patent Document 1, since only a warning is given when the housing inclination angle is outside the preset inclination angle range, when the operator continues using the mobile phone as it is, There is a problem that the regulation value of the determined SAR is exceeded.

  The present invention has been made in view of the above-described circumstances, and can improve communication quality without restricting the movable range of the movable antenna unit, and can prevent the SAR from exceeding the regulation value and can be produced. It is an object to provide a wireless communication terminal and a wireless communication method capable of improving performance and manageability.

  The present invention employs the following means in order to solve the above problems.

  That is, the present invention provides, as a first solving means related to a wireless communication terminal, a terminal main body formed in a card shape and attached to an information device, and the terminal main body provided rotatably on the terminal main body. A wireless communication terminal including a movable antenna unit configured to change a posture with respect to a posture detection unit that detects a posture of the movable antenna unit, and the movable antenna unit based on a detection value of the posture detection unit And a control unit for controlling the transmission output value.

  Further, as a second solving means relating to the wireless communication terminal, in the first solving means relating to the wireless communication terminal, the control unit may be configured to determine an angle formed by the movable antenna part with respect to a horizontal plane and / or the horizontal plane. A means is employed in which the attitude of the movable antenna unit is specified by a set reference line and an angle formed by the movable antenna projected onto the horizontal plane.

  Further, as a third solving means related to the wireless communication terminal, in the second solving means related to the wireless communication terminal, a means that the posture detection unit is an inclination angle sensor provided in the movable antenna unit. adopt.

  Further, as a fourth solving means related to the wireless communication terminal, in any one of the first to third solving means related to the wireless communication terminal, a storage unit and a transmission output of the movable antenna unit stored in the storage unit A transmission output table indicating a relationship between the value and the attitude of the movable antenna unit, and the control unit determines the transmission output value of the movable antenna unit based on the detection value of the attitude detection unit and the transmission output table. A means of controlling is adopted.

  Further, as a fifth solving means relating to the wireless communication terminal, in the fourth solving means relating to the wireless communication terminal, the storage section includes a plurality of the transmission output tables, and the control section serves as a communication partner. A means of selecting one of the plurality of transmission output tables based on the electromagnetic wave received from the base station is employed.

  In addition, as a first solving means related to the wireless communication method, a movable antenna portion configured to change a posture with respect to the terminal main body portion in advance is provided in a terminal main body portion formed in a card shape and attached to an information device, A means is adopted in which the transmission output value of the movable antenna unit is changed based on the attitude of the movable antenna.

  Further, as a second solving means related to the wireless communication method, in the first solving means related to the wireless communication method, the attitude of the movable antenna unit is defined as an angle formed by the movable antenna unit with respect to a horizontal plane and / or The step of specifying by the reference line set on the horizontal plane and the angle formed by the movable antenna projected on the horizontal plane is adopted.

  Further, as a third solving means related to the wireless communication method, in the first or second solving means related to the wireless communication method, the transmission output value of the movable antenna unit prepared in advance and the attitude of the movable antenna unit A means of changing the transmission output value based on the relationship is adopted.

As a sixth means for solving a wireless communication terminal, a wireless terminal including a movable terminal main body formed on a USB connector via a hinge and attached to an information device, and an antenna unit integrated with the terminal main body. A communication terminal, a posture detection unit for detecting a posture of the movable terminal main body,
A means is employed in which the transmission output value of the antenna unit is controlled based on the detection value of the attitude detection unit.

  Further, as a seventh solving means of the wireless communication terminal, the control unit projects the angle formed by the terminal main body with respect to the horizontal plane and / or the reference line set on the horizontal plane and the horizontal plane. A means of specifying the attitude of the terminal main body according to the angle formed by the terminal main body is adopted.

  Further, as an eighth solving means of the wireless communication terminal, the posture detection unit employs an inclination angle sensor provided in the terminal main body.

  Further, as a ninth means for solving the wireless communication terminal, comprising a storage unit, and a transmission output table indicating the relationship between the transmission output value of the antenna unit stored in the storage unit and the attitude of the movable terminal body unit, The control unit employs means for controlling a transmission output value of the antenna unit based on a detection value of the attitude detection unit and the transmission output table.

  Further, as a tenth solving means of the wireless communication terminal, the storage unit includes a plurality of transmission output tables, and the control unit transmits the plurality of transmissions based on electromagnetic waves received from a base station serving as a communication partner. A means of selecting one of the output tables is adopted.

  In addition, as a fourth means for solving the wireless communication method, an antenna unit formed integrally with the movable terminal main body unit is provided in the movable terminal main unit unit formed on the USB connector via the hinge and attached to the information device. The method of changing the transmission output value of the antenna unit based on the attitude of the movable terminal main body is adopted.

  Further, as a fifth solving means according to the wireless communication method, the attitude of the movable terminal main body is determined by an angle formed by the movable terminal main body with respect to a horizontal plane and / or a reference line set on the horizontal plane and the horizontal plane. A means of including a step of specifying by an angle formed by the movable terminal main body projected above is adopted.

As a sixth solution for the wireless communication method,
A means of changing the transmission output value based on the relationship between the transmission output value of the antenna section prepared in advance and the attitude of the movable terminal main body section is adopted.

  According to the present invention, the transmission output value of the movable antenna unit is controlled based on the attitude of the movable antenna. Therefore, when the attitude of the movable antenna unit is changed, the transmission output value is controlled according to the attitude. As a result, it is possible to improve the reception level by adjusting the movable antenna unit in the polarization direction without limiting the movable range of the movable antenna unit, and no matter where the operator moves the movable antenna unit. The SAR can be prevented from exceeding the regulation value. Therefore, it is possible to improve communication quality and prevent the SAR from exceeding the regulation value, and improve productivity and manageability.

  Moreover, since the transmission output value of the movable antenna unit is changed based on the attitude of the movable antenna unit, the movable antenna unit can be moved to improve the reception level in accordance with the polarization direction. It is possible to change the transmission output value according to the attitude so that the SAR does not exceed the regulation value.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is an external perspective view showing a wireless communication terminal A in an embodiment of the present invention. This wireless communication terminal A corresponds to a wireless communication network in country X and country Y that has established SAR regulation values and country Z that has not established SAR regulation values. Note that the SAR limits for country X and country Y are different.

  As shown in FIG. 1, the wireless communication terminal A includes a terminal main body 1 that is mounted in a card slot b1 of a notebook computer B, and a movable antenna unit that receives radio waves from the base station and transmits radio waves to the base station. 2 and the biaxial hinge part 3 which joins these terminal main-body parts 1 and the movable antenna part 2 so that relative rotation is possible.

  The terminal main body 1 is configured such that a printed circuit board unit (not shown) is accommodated in a housing formed in a card shape (rectangular plate shape). An external terminal (not shown) for electrically connecting the notebook personal computer B and the printed circuit board unit is provided on one end face 1a side of the two end faces in the longitudinal direction of the terminal main body 1. A mounting ball portion 1c (see FIG. 2) formed in a substantially spherical shape protrudes from the other end surface 1b in the longitudinal direction of the terminal main body portion 1.

  FIG. 2 is an enlarged cross-sectional view of a main part of the wireless communication terminal A.

  As shown in FIG. 2, the movable antenna portion 2 is configured such that an antenna conductor 2b is accommodated in a box-shaped housing 2a formed in a rod shape. The box-shaped housing 2a houses the tilt angle sensor 14 in the housing, and the tilt angle sensor 14 will be described later.

  A tongue piece 2f protruding in the longitudinal direction of the box-shaped housing 2a is formed on the base end portion 2d located on the opposite side of the distal end portion 2c of the box-shaped housing 2a. A through hole 2e is formed so as to be orthogonal to the longitudinal direction of the housing 2a.

  The biaxial hinge part 3 is comprised from the substantially cylindrical connection member 3a, the tongue piece 2f, the attachment pin 3b, and the attachment ball | bowl part 1c.

  The connecting member 3a is formed in a substantially cylindrical shape, and is formed with a mounting ball hole 3d formed in a substantially spherical shape on one end surface 3c and a counter mounting portion 3f formed on the other end surface 3e side. Is. The opposing mounting portion 3f is formed so as to connect a cylindrical central axis from a part of the peripheral surface of the connecting member 3a and further cut into a straight line to the other part of the peripheral surface located in the extending direction. The inner wall surfaces 3g and 3h facing each other across the center axis of the cylinder are molded so as to be parallel.

  The connecting member 3 a is attached so that the mounting ball 1 c of the terminal body 1 is fitted in the mounting ball hole 3 d and the one end surface 3 c is in contact with the other end surface 1 b of the terminal body 1. With such a configuration, the connection member 3a is stationary due to friction between the mounting ball hole 3d forming surface and the mounting ball portion 1c when no external force is applied, but when an appropriate external force is applied, the connection member 3a is stationary. It can be rotated around the central axis of the cylinder 3a.

  The mounting pin 3b is fixed to the inner wall surfaces 3g and 3h so as to be perpendicular to each other, and penetrates the through hole 2e of the tongue piece 2f and is fitted to the through hole 2e. With such a configuration, the movable antenna portion 2 is stationary due to friction between the formation surface of the through hole 2e and the mounting pin 3b when no external force is applied, but when the appropriate external force is applied, the mounting pin 3b is fixed. It is possible to rotate around the central axis.

  That is, the biaxial hinge part 3 joins the terminal main body part 1 and the antenna part 2 so that relative rotation is possible around two orthogonal axes, and the posture of the movable antenna part 2 with respect to the terminal main body part 3 is three-dimensionally. It is configured to be changeable.

  FIG. 3 is a block diagram showing a system configuration of the wireless communication terminal A.

  As illustrated in FIG. 3, the wireless communication terminal A includes the above-described movable antenna unit 2, modem unit 11, storage unit 13, tilt angle sensor 14, and control unit 15.

  The modem unit 11 modulates the transmission data of the notebook personal computer B and supplies the transmission signal to the movable antenna unit 2. Also, the modem unit 11 performs demodulation processing and restores the received signal received by the movable antenna unit 2. The received data is supplied to the notebook computer B. Further, the modem unit 11 inputs information referred to by the control unit 15, for example, operation information such as reception timing and reception frequency, to the control unit 15.

The storage unit 13 stores data for controlling the operation of the wireless communication terminal A. For example, data related to BCH (Broadcast Channel) received from a base station serving as a communication partner (data related to a base station ID or reception) Frequency).

  The control unit 15 also includes a maximum transmission output table T (T1, T2) indicating the relationship between the maximum transmission output value W of the movable antenna unit 2 and the attitude of the movable antenna unit 2 with respect to the terminal main body unit 1, and the wireless communication terminal A. A table selection table t indicating the relationship between the frequency related to the BCH received from the base station serving as the communication partner and the maximum transmission output table T is stored.

  FIG. 7 is an external perspective view showing the wireless communication terminal C in the embodiment of the present invention. This wireless communication terminal A corresponds to a wireless communication network in country X and country Y that has established SAR regulation values and country Z that has not established SAR regulation values. Note that the SAR limits for country X and country Y are different.

  As shown in FIG. 7, the wireless communication terminal C includes a terminal main body 1 that is mounted in the USB slot b2 of the notebook computer B, and an antenna unit 23 that receives radio waves from the base station and transmits radio waves to the base station. And the biaxial hinge part 22 which joins these movable terminal main-body parts 20 and the antenna part 23 so that relative rotation is possible.

  The movable terminal main body 20 is configured such that a printed circuit board unit (not shown) is accommodated in a housing formed in a card shape (rectangular plate shape). An external terminal (not shown) for electrically connecting the notebook personal computer B and the printed circuit board unit is provided on one end face 1a side of the two end faces in the longitudinal direction of the movable terminal body 20. .

  FIG. 8 is a block diagram showing a system configuration of the wireless communication terminal C.

  As illustrated in FIG. 8, the wireless communication terminal A includes the antenna unit 23, the modem unit 11, the storage unit 13, the tilt angle sensor 14, and the control unit 15 described above.

  The modem 11 performs modulation processing on the transmission data of the notebook personal computer B and supplies the transmission signal to the movable antenna unit 2, and performs demodulation processing on the received signal received by the antenna unit 23 and restores it. The received data is supplied to the notebook computer B. Further, the modem unit 11 inputs information referred to by the control unit 15, for example, operation information such as reception timing and reception frequency, to the control unit 15.

The storage unit 13 stores data for controlling the operation of the wireless communication terminal A. For example, data related to a BCH (Broadcast Channel) received from a base station serving as a communication partner (data related to a base station ID or reception) Frequency).

  The control unit 15 also includes a maximum transmission output table T (T1, T2) indicating the relationship between the maximum transmission output value W of the movable antenna unit 2 and the attitude of the movable antenna unit 2 with respect to the terminal main body unit 1, and the wireless communication terminal A. A table selection table t indicating the relationship between the frequency related to the BCH received from the base station serving as the communication partner and the maximum transmission output table T is stored.

  FIG. 4 is a diagram showing the maximum transmission output table T (T1, T2) stored in the storage unit 13, and FIG. 4A is a diagram showing the maximum transmission output table T1 corresponding to country X. FIG. 4B is a diagram showing a maximum transmission output table T2 corresponding to Y country.

  The maximum transmission output table T defines a maximum transmission output value W corresponding to each posture of the movable antenna unit 2. Here, the maximum transmission output value W is defined so that the SAR to the operator does not exceed the regulation value according to each posture of the movable antenna unit 2.

  Specifically, a pseudo human body model (phantom) imitating an operator is used, and a notebook computer B equipped with a wireless communication terminal A is placed on the thigh of the human body model. The SAR in each posture is evaluated, and the maximum transmission output value W of each of the maximum transmission output tables T1 and T2 is specified so that the SAR regulation value determined in the X country and the Y country from the SAR is not exceeded. .

  The reason why the SAR is determined by placing the notebook computer B on the thigh of the human body model is that it is generally assumed that the notebook computer is placed on the operator's thigh and used. .

  As shown in FIG. 1, the attitude of the movable antenna portion 2 of the maximum transmission output table T is an attachment ball formed on the other end surface 1b of the terminal main body 1 when the longitudinal direction of the wireless communication terminal A overlaps the horizontal direction. Using the virtual reference line q provided extending in the protruding direction of the part 1c (longitudinal direction of the wireless communication terminal A) and the virtual horizontal plane Q having the virtual reference line q, the following is specified. Yes.

  That is, the angle formed by the projection line r and the virtual reference line q projected from the movable antenna unit 2 with respect to the virtual horizontal plane Q is defined as the antenna direction angle α, and the position where the projection line r and the virtual reference line q overlap is defined. It is expressed as 0 degree to 359 degrees counterclockwise as viewed from above.

  Further, an angle formed by the movable antenna unit 2 with respect to the virtual horizontal plane Q is defined as an antenna angle β, the angle on the virtual horizontal plane Q is set to 0 degree, and when the movable antenna unit 2 is vertically upward, 90 degrees, When it is vertically downward, it is expressed as -90 degrees.

  In this way, the attitude of the movable antenna unit 2 is specified by the antenna direction angle α and the antenna angle β, and the maximum transmission output table T is shown in FIG. A maximum transmission output value W corresponding to the antenna angle β is defined and configured.

  FIG. 5 is a diagram showing a table selection table t indicating the relationship between the frequency related to the BCH received from the base station that is the communication partner of the wireless communication terminal A and the maximum transmission output table T.

  That is, in the X country, the Y country, and the Z country, the frequency used for the BCH of the base station in each country is associated with the maximum transmission output table T corresponding to the country. In Z country, the SAR regulation value is not defined, but in order to improve safety, the maximum transmission output table T2 corresponding to the SAR regulation in Y country is related to the BCH frequency of the base station in Z country. ing.

  Returning to FIG. 3, the tilt angle sensor (posture detection unit) 14 detects the posture of the antenna unit 2 with respect to the terminal main body unit 1.

  As shown in FIG. 2, the inclination angle sensor 14 has a square plate shape that is relatively small and thin, and is formed on the inner wall surface of the casing on the base end 2d side in the box-shaped casing 2a. The lead wire (not shown) is connected to a printed circuit board unit provided inside the terminal body 1.

  The inclination angle sensor 14 is of a piezoresistive type, and when the weight part included in the sensor element is displaced by an external force, the flexible part supporting the weight part is deformed, and this deformation is applied to the piezo provided in the flexible part. The resistance element senses and outputs a detection signal corresponding to each deformation. That is, since the weight portion is displaced according to each posture of the movable antenna portion 2, in other words, the antenna direction angle α and the antenna angle β, a detection signal corresponding to the displacement is output from the piezoelectric element to the printed circuit board unit. It has become so.

  Returning to FIG. 3 again, the control unit 15 collectively controls the processing operations of the wireless communication terminal A.

  For example, the control unit 15 supplies a control signal to the modulation / demodulation unit 11 based on various operation information supplied from the modulation / demodulation unit 11 to control transmission timing and transmission frequency. Further, based on the BCH received from the base station as the communication partner, the base station ID of the base station is recognized, and the reception frequency and the reception timing are measured and corrected.

  Further, the control unit 15 selects the maximum transmission output table T corresponding to the X country, the Y country, and the Z country based on the BCH frequency received from the base station and the table selection table t.

  Further, the control unit 15 adjusts the transmission output of the modem unit 11 based on the received signal level and the control information from the base station included in the received signal. At this time, based on the detection signal output from the tilt angle sensor 14, the maximum transmission output table T of the storage unit 13 is referred to, and the maximum transmission output value W obtained as a result of this reference is used as the upper limit to limit the transmission output. I do.

  The control unit 15 is supplied with control information such as suspend and return instructions from the notebook personal computer B, while operating information such as received signal quality, used channel, communication speed, etc., as well as maximum transmission output to the notebook personal computer B. Supply the restricted state.

  Next, a wireless communication method using the wireless communication terminal A will be described using the flowchart shown in FIG. In the following description, a case where wireless communication is performed by moving from X country to Y country will be described.

  First, when the wireless communication terminal A is attached to the notebook computer B, power is supplied from the notebook computer B to the wireless communication terminal A, and the wireless communication terminal A is activated (step S1). Note that the notebook computer B is used on the operator's thigh, and the reception level of the movable antenna unit 2 is displayed on the monitor of the notebook computer B.

  Next, the wireless communication terminal A receives BCH from a nearby base station (step S2). For example, the BCH is received from the base station in country X, and accordingly, the control unit 15 recognizes the base station ID of the base station and measures and corrects the reception frequency and reception timing.

  Next, the control unit 15 refers to the table selection table t and determines which maximum transmission output table T the frequency related to the received BCH is associated with (step S3). For example, when BCH having a frequency of 1789612500 Hz is received from the base station, it is determined that it is related to the maximum transmission output table T1 corresponding to country X.

  Next, the control unit 15 selects the maximum transmission output table T determined with reference to the table selection table t (step S4). For example, the maximum transmission output table T1 corresponding to country X is selected based on the above determination.

  Next, the operator changes the attitude of the movable antenna unit 2 in order to improve the reception level in accordance with the polarization direction of the radio wave transmitted from the base station (step S5). For example, the reception level is improved by changing from an attitude in which the antenna direction angle α is 0 degrees and the antenna angle β is 90 degrees to an attitude in which the antenna direction angle α is 10 degrees and the antenna angle β is 10 degrees.

  Next, the control unit 15 refers to the maximum transmission output table T, and the maximum corresponding to the attitude of the movable antenna unit 2 indicated by the detection signal output from the tilt angle sensor 14 accommodated and fixed in the movable antenna unit 2. The transmission output value W is determined (step S6). For example, when the antenna direction angle α is changed to an attitude of 10 degrees and the antenna angle β is changed to 10 degrees, the maximum transmission output value W is determined to be 19 dBm with reference to the maximum transmission output table T1.

  Next, the control unit 15 sets the maximum transmission output value W determined with reference to the maximum transmission output table T (step S7). For example, when the antenna direction angle α is 0 degree and the antenna angle β is 90 degrees, the maximum transmission output value is changed when the antenna direction angle α is 10 degrees and the antenna angle β is 10 degrees. Set W from 27 dBm to 19 dBm.

  Next, the transmission output of the modem 11 is adjusted based on the received signal level, the control information from the base station included in the received signal and the maximum transmission output value W, and the base station and the notebook Wireless communication is performed with the personal computer B (step S8). At this time, the transmission output does not exceed the maximum transmission output value W, and the SAR also does not exceed the SAR regulation value defined in the X country.

  Next, in order to move from country X to country Y, the notebook computer B and the wireless communication terminal A are turned off, and the wireless communication between the base station in country X and the notebook computer B is terminated (step S9).

  After moving to country Y, the wireless communication terminal A is activated in the same manner as described above (step S1), and after receiving BCH from the base station in country Y (step S2), the control unit 15 refers to the table selection table t. It is determined that the frequency related to the received BCH is associated with the maximum transmission output table T2 (step S3).

Based on this determination, the maximum transmission output table T2 is selected (step S10).
In the same manner as described above, when the attitude of the movable antenna unit 2 is changed (step S5), the maximum transmission output table T2 corresponding to the detection signal of the tilt angle sensor 14 is referred to (step S6), and the maximum transmission output is obtained. A value W is determined (step S7), and wireless communication is performed between the base station in Y country and the notebook personal computer B while adjusting the transmission output of the modem 11 with the maximum transmission output value W as an upper limit (step S8). ). Also in this case, the transmission output does not exceed the maximum transmission output value W, and the SAR also does not exceed the SAR regulation value defined in Y country.

  Even when wireless communication is performed with a base station in country Z, it is determined that the frequency related to the received BCH is related to the maximum transmission output table T2 in the same manner as described above (step S3), The maximum transmission output table T2 is selected (step S11).

  As described above, according to the wireless communication terminal A, since the maximum transmission output value W of the movable antenna unit 2 is set based on the attitude of the movable antenna unit 2, the maximum is obtained in accordance with the change of the attitude of the movable antenna unit 2. The transmission output value W is changed. Further, the maximum transmission output value W is defined to be a value that does not exceed the SAR regulation value defined in each country in each posture of the movable antenna unit 2. Accordingly, it is possible to improve the reception level by adjusting the movable antenna unit in the polarization direction without restricting the movable range of the movable antenna unit 2 and also to what position the operator moves the movable antenna unit 2. May not exceed the prescribed SAR. Therefore, it is possible to improve communication quality and prevent the SAR from exceeding the regulation value.

  Moreover, since the control part 15 specifies the attitude | position of the movable antenna part 2 with the antenna direction angle (alpha) and the antenna angle (beta), it can specify the attitude | position of the movable antenna part 2 easily.

  In addition, since the tilt angle sensor 14 is provided inside the box-shaped housing 2a, the movable antenna unit 2 can be made compact and the antenna direction angle α and the antenna angle β can be accurately measured.

  In addition, since the maximum transmission output table T is provided, it is easy to refer to the maximum transmission output value W based on the detection signal of the tilt angle sensor 14.

  In addition, since the maximum transmission output table T (T1, T2) corresponding to the X country and the Y country is provided, the transmission output value can be changed according to the SAR regulation value defined in the X country and the Y country. Thereby, it is not necessary to change and manufacture mechanical structures, such as the movable hinge part 3, for every country, and it becomes possible to reduce manufacturing cost and management cost.

  The operation processing procedure shown in the above embodiment, various shapes and combinations of the constituent members, and the like are examples, and various changes can be made based on design requirements and the like without departing from the gist of the present invention.

  For example, in the above-described embodiment, the case where the wireless communication terminal A is attached only to the notebook computer B has been described. However, the wireless communication terminal A may be adapted to different information devices other than the notebook computer B. For example, when the wireless communication terminal A is attached to the portable information terminal, the SAR of the operator (human body model) is evaluated at the assumed use position, and the attitude of the movable antenna unit 2 and the maximum transmission output value are based on this. If the relationship with W is stored as a new maximum transmission output table, the wireless communication terminal A can correspond to the portable information terminal and the notebook computer B. At this time, as a method of distinguishing the information device mounted when selecting the maximum transmission output table, a method of distinguishing by the operation signal supplied from the information device to the control unit 15 can be considered.

  In the above-described embodiment, the maximum transmission output table T is selected at the frequency used for the BCH. However, the country code is included in the base station ID notified by the BCH, and the country code and the maximum transmission output table T are included. May be related.

  In the above-described embodiment, the case where the movable antenna unit 2 has two movable axes has been described. However, the present invention may be applied to a structure in which the movable shaft is configured as one axis. In this case, the attitude of the movable antenna unit can be specified using either the antenna direction angle α or the antenna angle β.

  In the above-described embodiment, the wireless communication terminal A corresponding to the X country, the Y country, and the Z country has been described. However, it is needless to say that the wireless communication terminal A can correspond to a larger number of countries.

1 is an external perspective view showing a wireless communication terminal A in an embodiment of the present invention. In embodiment of this invention, it is a principal part expanded sectional view of the radio | wireless communication terminal A. FIG. 1 is a block diagram showing a system configuration of a wireless communication terminal A in an embodiment of the present invention. FIG. 4 is a diagram showing a maximum transmission output table T (T1, T2) stored in the storage unit 13 in the embodiment of the present invention, and FIG. 4A is a diagram showing a maximum transmission output table T1 corresponding to country X. FIG. 4B shows a maximum transmission output table T2 corresponding to Y country. In the embodiment of the present invention, it is a diagram showing a table selection table t showing the relationship between the frequency related to the BCH received from the base station as the communication partner of the wireless communication terminal A and the maximum transmission output table T. In the embodiment of the present invention, the processing of the part (main part) related to the present invention is extracted from various processes executed by the control unit 14 based on the control program. 1 is an external perspective view showing a wireless communication terminal C in an embodiment of the present invention. 1 is a block diagram showing a system configuration of a wireless communication terminal C in an embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Terminal main-body part 1a ... One end surface 1b ... Other end surface 1c ... Mounting ball part 2 ... Movable antenna part 2a ... Box-shaped housing | casing 2b ... Antenna conductor 2c ... Tip part 2d ... Base end part 2e ... Through-hole 2f ... Tongue piece DESCRIPTION OF SYMBOLS 3 ... Biaxial hinge part 3a ... Connection member 3b ... Mounting pin 3c ... One end surface 3d ... Mounting ball hole 3e ... Other end surface 3f ... Opposite mounting part 3g ... Inner wall surface 11 ... Modulation / demodulation part 13 ... Memory | storage part 14 ... Inclination angle sensor ( (Attitude detection unit)
DESCRIPTION OF SYMBOLS 15 ... Control part 20 ... Movable terminal main-body part 21 ... USB connector 22 ... Hinge 23 ... Antenna part A ... Wireless communication terminal C ... Wireless communication terminal B ... Laptop PC b1 ... Card slot b2 ... USB slot Q ... Virtual horizontal plane (horizontal plane)
T (T1, T2) ... Maximum transmission output table (transmission output table)
q ... Virtual reference line (reference line)
r ... projection line t ... table selection table α ... antenna direction angle β ... antenna angle

Claims (10)

A wireless communication terminal comprising a terminal main body formed in a card shape and attached to an information device, and a movable antenna provided rotatably on the terminal main body and configured to change a posture with respect to the terminal main body Because
An attitude detection unit that detects an attitude of the movable antenna unit;
A storage unit for storing a plurality of transmission output tables indicating the relationship between the transmission output value of the movable antenna unit and the attitude of the movable antenna unit;
And a control unit for controlling the transmission output value of the movable antenna unit on the basis of the detected value of the posture detection section and the one of the plurality of transmission output table,
The control unit receives broadcast information received from a base station serving as a communication partner, specifies an area corresponding to a reception frequency of the broadcast information, selects the transmission output table of the specified area, and transmits the transmission A wireless communication terminal that controls an output value .   The control unit is configured such that the movable antenna unit has an angle formed with respect to a horizontal plane and / or a reference line set on the horizontal plane and an angle formed with the movable antenna projected onto the horizontal plane. The wireless communication terminal according to claim 1, wherein the posture is specified.   The wireless communication terminal according to claim 2, wherein the posture detection unit is an inclination angle sensor provided in the movable antenna unit. Provided with a movable antenna portion that is configured in advance so that the posture with respect to the terminal body portion can be changed in the terminal body portion that is formed in a card type and is attached to the information device
A change step of changing the transmission output value of the movable antenna unit based on the attitude of the movable antenna and one transmission output table selected from a plurality of transmission output tables stored in the storage unit ;
The transmission output table selected in the changing step specifies an area corresponding to a reception frequency of broadcast information received from a base station that is a communication partner, and the transmission output table of the specified area is selected. A wireless communication method characterized by the above. Identifying the attitude of the movable antenna unit by an angle formed by the movable antenna unit with respect to a horizontal plane and / or a reference line set on the horizontal plane and an angle formed by the movable antenna projected on the horizontal plane. The wireless communication method according to claim 4 , further comprising: A wireless communication terminal comprising a movable terminal main body formed on a USB connector via a hinge and attached to an information device, and an antenna unit provided integrally with the terminal main body,
An attitude detection unit for detecting the attitude of the movable terminal main body;
A storage unit for storing a plurality of transmission output tables indicating the relationship between the transmission output value of the antenna unit and the attitude of the movable terminal body unit;
And a control unit for controlling the transmission output value of the antenna unit based on the detected value of the posture detection section and the one of the plurality of transmission output table,
The control unit receives broadcast information received from a base station serving as a communication partner, specifies an area corresponding to a reception frequency of the broadcast information, selects the transmission output table of the specified area, and transmits the transmission A wireless communication terminal that controls an output value . The control unit includes the terminal main body according to an angle formed by the movable terminal main body with respect to a horizontal plane and / or an angle formed by a reference line set on the horizontal plane and the terminal main body projected on the horizontal plane. The wireless communication terminal according to claim 6 , wherein the posture of the wireless communication terminal is specified. The wireless communication terminal according to claim 7 , wherein the posture detection unit is an inclination angle sensor provided in the movable terminal main body. Provided with an antenna part formed integrally with the movable terminal main body part on the movable terminal main body part formed through a hinge on the USB connector and mounted on the information device,
A change step of changing the transmission output value of the antenna unit based on the attitude of the movable terminal main body and one transmission output table selected from a plurality of transmission output tables stored in the storage unit ;
The transmission output table selected in the changing step specifies an area corresponding to a reception frequency of broadcast information received from a base station that is a communication partner, and the transmission output table of the specified area is selected. A wireless communication method characterized by the above. The angle formed by the movable terminal main body with respect to the horizontal plane and / or the angle formed by the movable terminal main body projected on the horizontal plane and the reference line set on the horizontal plane. The wireless communication method according to claim 9 , further comprising a step of specifying by: