WO2012008077A1 - Mobile terminal, display control method, and display control program - Google Patents

Mobile terminal, display control method, and display control program Download PDF

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Publication number
WO2012008077A1
WO2012008077A1 PCT/JP2011/002805 JP2011002805W WO2012008077A1 WO 2012008077 A1 WO2012008077 A1 WO 2012008077A1 JP 2011002805 W JP2011002805 W JP 2011002805W WO 2012008077 A1 WO2012008077 A1 WO 2012008077A1
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WO
WIPO (PCT)
Prior art keywords
hand
portable terminal
user
axis
display
Prior art date
Application number
PCT/JP2011/002805
Other languages
French (fr)
Japanese (ja)
Inventor
藤原　祐二
Original Assignee
パナソニック株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニック株式会社 filed Critical パナソニック株式会社
Publication of WO2012008077A1 publication Critical patent/WO2012008077A1/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1684—Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675
    • G06F1/1694—Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675 the I/O peripheral being a single or a set of motion sensors for pointer control or gesture input obtained by sensing movements of the portable computer
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0346—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of the device orientation or free movement in a 3D space, e.g. 3D mice, 6-DOF [six degrees of freedom] pointers using gyroscopes, accelerometers or tilt-sensors
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/038—Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2200/00—Indexing scheme relating to G06F1/04 - G06F1/32
    • G06F2200/16—Indexing scheme relating to G06F1/16 - G06F1/18
    • G06F2200/163—Indexing scheme relating to constructional details of the computer
    • G06F2200/1637—Sensing arrangement for detection of housing movement or orientation, e.g. for controlling scrolling or cursor movement on the display of an handheld computer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/0279—Improving the user comfort or ergonomics
    • H04M1/0281—Improving the user comfort or ergonomics for providing single handed use or left/right hand conversion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2250/00—Details of telephonic subscriber devices
    • H04M2250/12—Details of telephonic subscriber devices including a sensor for measuring a physical value, e.g. temperature or motion

Definitions

  • the present invention relates to a portable terminal, a display control method, and a display control program, and more particularly to a portable terminal capable of determining a hand with an acceleration sensor, a display control method, and a display control program.
  • Patent Document 1 discloses a technique for determining whether the operator's dominant hand is the right hand or the left hand based on the states of the dominant hand determination switch and the power switch. Further, Patent Document 2 discloses a portable terminal in which a touch sensor detects a touch of an operator's hand, and a holding hand is determined based on the detection result.
  • Patent Document 1 although the hand is determined using the dominant hand determination switch, the dominant hand determination switch can be operated with either hand, and effective means for preventing erroneous operation is not disclosed. In addition, since the switching is performed in combination with the power switch, when the user changes the portable terminal from right to left or from left to right, it is not possible to quickly switch the holding mode.
  • Patent Document 2 it is determined by the pressure sensor that the user holds the portable terminal with which hand, but in order to make a correct determination, depending on the position of the pressure sensor, the user's holding method or finger There is a restriction on the position to place the Furthermore, if the size of the portable terminal is larger than the user's hand, the method disclosed in Patent Document 2 is difficult to apply.
  • An object of the present invention is to provide a portable terminal, a display control method, and a display control program which can switch the display of the display unit according to the handle regardless of how the user holds or the position of a finger. It is.
  • the present invention comprises a display unit for displaying, a sensor unit for detecting the movement of the own terminal, and a hand determining unit for judging the hand based on the movement of the own terminal detected by the sensor unit; And a control unit configured to switch the display of the display unit to a display according to the hand based on the determination result of the determination unit.
  • the sensor unit is provided in a housing of the mobile terminal
  • the display unit is provided on a display surface constituting one surface of the housing of the mobile terminal
  • the holding hand judging unit is provided.
  • the sensor unit is configured of one three-axis acceleration sensor capable of detecting a gravitational acceleration.
  • the sensor unit is configured of two three-axis acceleration sensors provided at the centers of the side surfaces of the housing.
  • the sensor unit is configured by an acceleration sensor which can detect one angular velocity provided at the center between the side surfaces of the housing.
  • the holding hand determining unit detects a movement that returns in the reverse direction substantially the same trajectory as the first movement after detecting the first movement
  • the holding hand is the right hand.
  • the determination and the detection of the second movement when it is determined that the movement returning the trajectory substantially the same as the second movement in the opposite direction is detected, it is determined that the handle is the left hand.
  • the present invention also includes a detecting step of detecting the movement of the own terminal by the sensor unit, and a judging step of determining the holding hand based on the movement of the own terminal detected by the sensor unit by the holding hand judging unit;
  • a display control method comprising: a display switching step of displaying a display on the display unit of the portable terminal according to the hand based on the determination result of the hand determination unit.
  • the present invention also provides a display control program for executing the steps of the above display control method.
  • the portable terminal of the present invention it is possible to switch the display of the display portion according to the handle, without being restricted by the way of holding the user or the position of the finger.
  • Block diagram showing the configuration of the mobile terminal 100 according to the first embodiment The figure which explains the standard axis which defines the direction which is detected by sensor section 105 Diagram (1) explaining the movement of the mobile terminal 100 Diagram (2) explaining the movement of the mobile terminal 100 Switching control flow of the display unit 101 according to the first embodiment
  • a diagram for explaining an initial state of the mobile terminal 100 Block diagram showing configuration of portable terminal 300 according to Embodiment 2 Diagram (1) explaining the movement of the portable terminal 300 Diagram (2) explaining the movement of the mobile terminal 300 Switching Control Flow of Display Unit 101 in Second Embodiment
  • FIG. 1 is a block diagram showing the configuration of mobile terminal 100 according to the first embodiment.
  • a mobile terminal 100 according to the first embodiment includes a display unit 101 that displays various functions of the mobile terminal 100 and an operation unit that allows the user to operate various functions displayed on the display unit 101.
  • 103 a sensor unit 105, a control unit 107, a state management unit 109, and a handle determination unit 131.
  • the display unit 101 displays various functions of the mobile terminal 100.
  • the display unit 101 is configured to switch the direction, position, and size of the display screen as appropriate according to the user's hand (right hand or left hand) based on the control of the control unit 107 described later.
  • the sensor unit 105 is located substantially at the center of the housing 150 of the mobile terminal 100.
  • the sensor unit 105 detects (1) acceleration in the negative direction of the Z-axis and (2) change in the direction of gravity as viewed from the portable terminal 100 by an acceleration sensor built in the sensor unit 105. Then, the sensor unit 105 outputs the x, y, and z components of the gravitational acceleration as detected values to the holding hand determination unit 131.
  • the acceleration in the negative Z-axis direction can be reworded as an acceleration in a direction from the display surface 121 side of the housing 150 of the portable terminal 100 toward the back surface 127 side.
  • the holding hand determination unit 131 calculates the rotation angle of the mobile terminal 100 in a predetermined direction based on the time change of the detection value of the sensor unit 105. That is, the holding hand determination unit 131 calculates a rotation angle in a predetermined direction from (1) temporal change in acceleration in the negative Z-axis direction and (2) change in gravity direction viewed from the portable terminal 100. . More specifically, the holding hand determination unit 131 determines the rotation angle around the x axis (pitch angle), the rotation angle around the y axis (roll angle), and the rotation around the z axis as each component of the rotation angle in a predetermined direction. Calculate the angle (yaw angle).
  • rotational angle in a predetermined direction means that, when the user's handle is the right hand, the rotation axis Y1 is closer to the right side surface 123 than the center of the housing 150 of the portable terminal 100, and the portable terminal 100 is the user It is a rotation angle at the time of rotating by a predetermined angle in the roll angle minus direction centering on the rotation axis Y1 by the handle of. Furthermore, when the user holds the right hand, the negative roll angle direction about the rotation axis Y1 located on the right side 123 side of the center of the case 150 of the portable terminal 100 is the left side of the case 150 of the portable terminal 100
  • the surface 125 is a direction from the display surface 121 to the back surface 127 (see FIG. 3).
  • rotational angle in a predetermined direction means that the rotation axis Y1 is closer to the left side 125 than the center of the case 150 of the portable terminal 100, and the portable terminal 100 is the user. It is a rotation angle when rotating by a predetermined angle in the roll angle plus direction about the rotation axis Y1 by the handle.
  • the roll angle plus direction centered on the rotation axis Y1 located on the left side 125 side of the center of the casing 150 of the portable terminal 100 is the right side of the casing 150 of the portable terminal 100
  • the surface 123 is a direction from the display surface 121 side to the back surface 127 side.
  • rotational angle in a predetermined direction is used in the same meaning.
  • the portable terminal 100 rotates 90 degrees in the “roll angle minus direction”
  • vector G1 (a, b, c) of gravitational acceleration immediately after the start of rotation vector G2 (c, b, -a) (see FIG. 3) of gravitational acceleration immediately before the end of rotation, or G7 (-c) , B, a) (see FIG. 4) by a known calculation method.
  • the holding hand determination unit 131 compares the calculated rotation angle of the predetermined direction with the “determination reference of the rotation angle of the predetermined direction of the portable terminal 100 (hereinafter referred to as“ determination reference of the rotation angle ”), It is determined whether the user's handle is "right hand” or "left hand”.
  • FIG. 2 is a diagram for explaining a reference axis that defines the direction detected by the sensor unit 105
  • FIG. 3 is a diagram for explaining the movement of the portable terminal 100 for determining the user's hand (right hand in this figure).
  • FIG. 4 is a diagram (2) for explaining the movement of the portable terminal 100 for determining the handle of the user (the left hand in this figure).
  • an axis and a rotation angle which define the direction detected by the sensor unit 105 will be described.
  • the center of the sensor unit 105 (the center of the casing 150 of the portable terminal 100) as a center
  • the rotation angle around Z axis be the yaw angle
  • the rotation angle around Y axis be the roll angle
  • the rotation angle around X axis be the pitch angle. That is, the rotation angle in the predetermined direction of the portable terminal 100 detected by the sensor unit 105 can be defined by the rotation angle around each axis and the direction of the rotation angle.
  • the direction of the rotation angle around each axis is specified.
  • the pitch angle when the X axis plus direction is viewed from the X axis in the front, the clockwise direction is "pitch angle plus direction", and the X axis is viewed counterclockwise as the X axis plus direction is viewed in the front
  • the pitch angle is in the negative direction.
  • the roll angle with the Y axis positive direction centered on the Y axis, the clockwise direction is "roll angle plus direction", and the Y axis positive direction with the Y axis plus direction counterclockwise, "roll angle In the negative direction.
  • the Z axis plus direction is viewed in front about the Z axis, clockwise as “Yaw angle plus direction”, and the Z axis plus direction viewed in the Z axis plus direction, counterclockwise as "Yaw angle In the negative direction.
  • FIG. 3 is a diagram (1) for explaining the movement of the portable terminal 100 for determining the user's hand (the right hand in this figure).
  • the Y1 axis shown in FIG. 3 is an axis parallel to the above-mentioned Y axis. Since it is parallel to the Y axis, assuming a coordinate system in which the above-mentioned orthogonal coordinate system is translated, the rotation angle in a predetermined direction of the portable terminal 100 can be defined by the rotation angle around the same axis. Moreover, in FIG. 3, the gravity direction before rotation is the Z-axis minus direction. The reference axis of the rotation angle is shown at the upper left of FIG.
  • the Y1 axis shown in FIG. 3 is an axis in the front-rear direction of the portable terminal 100.
  • state 1 of the portable terminal 100 shown in FIG. 3 the user is looking at the display surface 121 from the Z-axis plus direction. Then, from the state where the user is looking at the display surface 121 from the Z-axis plus direction, the portable terminal 100 is rotated 90 degrees in the “roll angle minus direction” with the right hand (arrow P in the figure).
  • the “roll angle negative direction” centered on the rotation axis Y1 located on the right side surface 123 side of the center of the housing 150 of the portable terminal 100, the left side surface 125 of the housing 150 of the portable terminal 100 is the display surface 121 It is a direction from the side toward the back surface 127 side. That is, the state of the portable terminal 100 transitions from the state 1 to the state 2 rotated 90 degrees in the “roll angle minus direction”.
  • FIG. 4 is a diagram (2) for explaining the movement of the portable terminal 100 for determining the user's hand (the left hand in this figure). Elements in common with FIG. 3 are given the same reference numerals, and detailed descriptions thereof will be omitted.
  • the gravity direction is assumed to be the Z axis negative direction.
  • the reference axis of the rotation angle is shown at the upper left of FIG.
  • the Y1 axis shown in FIG. 4 is an axis in the front-rear direction of the portable terminal 100.
  • state 1 of the mobile terminal 100 shown in FIG. 4 the user is looking at the display surface 121 from the Z-axis plus direction. Then, from the state where the user is looking at the display surface 121 from the Z-axis plus direction, the portable terminal 100 is rotated 90 degrees in the “roll angle plus direction” with the left hand (arrow P1 in the figure).
  • the “roll angle plus direction” centered on the rotation axis Y1 located on the left side 125 side of the center of the case 150 of the portable terminal 100
  • the right side face 123 of the case 150 of the portable terminal 100 is the display surface 121 It is a direction from the side toward the back surface 127 side. That is, the state of the portable terminal 100 transitions from the state 1 to the state 4 rotated 90 degrees in the “roll angle plus direction”.
  • the sensor unit 105 changes (1) the change in acceleration in the Z-axis negative direction, 2) A change in the direction of gravity as viewed from the portable terminal 100 is detected, and the detection results are output to the hand determining unit 131 as detection values.
  • the holding hand determination unit 131 determines that the rotation angle in the predetermined direction of the portable terminal 100 calculated by the holding hand determination unit 131 is “the rotation angle in the predetermined direction of the portable terminal 100 held by the holding hand determination unit 131 It is the same as the determination criterion of the rotation angle when rotated 90 degrees in the “roll angle minus direction” based on the determination criterion (hereinafter referred to as “the determination criterion of the rotation angle”), and based on the detection value of the sensor unit 105 When it is determined that the sensor unit 105 detects a change in acceleration in the Z-axis negative direction, the holding hand determination unit 131 determines that the user's hand is the right hand.
  • the holding hand determination unit 131 is configured such that the rotation angle in the predetermined direction of the portable terminal 100 calculated by the holding hand determination unit 131 is “the rotation angle in the predetermined direction of the portable terminal 100 held by the holding hand determination unit 131 It is the same as the determination criterion of the rotation angle when rotated 90 degrees in the “roll angle plus direction” based on the determination criterion (hereinafter referred to as “determination criterion of the rotation angle”), and based on the detection value of the sensor unit 105 When it is determined that the sensor unit 105 detects a change in acceleration in the Z-axis negative direction, the holding hand determination unit 131 determines that the user's hand is the left hand. In addition, the holding hand determination unit 131 holds the determination reference of the rotation angle based on the rotation angle around each axis in advance in a storage element (not shown) as data.
  • the holding hand determination unit 131 outputs the determination result of the user's hand to the control unit 107.
  • the control unit 107 compares the determination result of the user's hand, which is input from the handle determination unit 131, with the information of the user's currently held hand. When the information on the current user's hand is different from the determination result of the user's hand input from the hand determination unit 131, the control unit 107 determines that the user's information on the current user's hand is held. Update based on the hand judgment result. When the information on the user's hand currently held is the same as the determination result of the user's hand input from the hand holding determination unit 131, the control unit 107 holds the user's current hand. Do not update the information of
  • control unit 107 controls the display unit 101 to change the direction, position, and size of the display screen of the display unit 101 based on the information of the current user's hand held.
  • the control unit 107 also controls various functions displayed on the display unit 101 based on the input from the operation unit 103.
  • the state management unit 109 manages information on the hand of the user of the mobile terminal 100 as information indicating the current state of the mobile terminal.
  • the information indicating the rotation angle in the predetermined direction of the portable terminal 100 is 90 degrees rotation in the “roll angle minus direction” when the holding hand is determined to be the right hand, and “rolling when the holding hand is determined to be the left hand It is a 90 degree rotation in the angle plus direction.
  • FIG. 5 is a switching control flow of the display unit 101.
  • step ST401 the sensor unit 105 detects (1) the acceleration in the negative direction of the Z-axis and (2) the change in the gravity direction as viewed from the portable terminal as a detection value of the sensor unit 105. Then, the process transitions to step ST403.
  • step ST403 the holding hand determination unit 131 determines a rotation angle in a predetermined direction (rotation angle around the x axis (pitch angle), rotation angle around the y axis (roll angle) from time change of the detection value of the sensor unit 105). And the rotation angle (yaw angle) about the z axis. Then, the user's hand is determined from the calculated rotation angle in the predetermined direction. Then, the process transitions to branch ST405.
  • the holding hand determination unit 131 determines whether the user's holding hand is the right hand. If it is determined that the user's hand is the right hand (in the case of Yes), the process transitions to step ST407, and if not (in the case of No), the process transitions to branch ST409.
  • step ST407 the holding hand determination unit 131 outputs the determination result (right hand) of the user's hand to the control unit 107. Then, the process transitions to branch ST411.
  • control unit 107 compares the determination result (right hand) of the user's hand with the information indicating the user's hand held by the state management unit 109, and determines whether they are different. If they are different (in the case of Yes), the process proceeds to step ST415. If they are the same (in the case of No), the process returns to step ST401.
  • control unit 107 updates information (left hand) indicating the user's hand held by state management unit 109 based on the determination result of the user's hand, and displays display unit 101 for the right hand. Switch to the screen.
  • the holding hand determination unit 131 determines whether the user's holding hand is the left hand. If it is determined that the user's hand is the left hand (in the case of Yes), the process proceeds to step ST413. If not (in the case of No), the process returns to step ST401.
  • step ST413 the holding hand determination unit 131 outputs the determination result (left hand) of the user's holding hand to the control unit 107. Then, the process transitions to branch ST417.
  • control unit 107 compares the determination result (left hand) of the user's hand with the information indicating the user's hand held by the state management unit 109, and determines whether they are different. When they are different (in the case of Yes), the process transitions to step ST419, and in the case of the same (in the case of No), the process returns to step ST401.
  • control unit 107 updates the information indicating the user's hand held by state management unit 109 based on the determination result of the user's hand, and switches display unit 101 to the display screen for the left hand. .
  • the portable terminal 100 according to the present embodiment is determined based on (1) acceleration in the negative Z-axis direction detected by the sensor unit 105 and (2) temporal change in the direction of gravity seen from the portable terminal. By calculating the rotation angle in the predetermined direction, it is possible to determine the user's hand (assuming one hand in the present embodiment). Therefore, portable terminal 100 according to the present embodiment can switch the display of display unit 101 according to the user's hand. Therefore, portable terminal 100 according to the present embodiment can perform convenient display for the user through the display unit 101 in accordance with the user's hand.
  • the three-axis acceleration sensor is provided in the housing 150. Therefore, at the time of detection, it is assumed that the palm of the user's right or left hand is facing the back of the portable terminal 100 and the user is looking at the display surface 121 from the Z-axis plus direction. There is no restriction on holding the portable terminal 100 by placing a finger on any part of the portable terminal 100. It is desirable that the sensor unit 105 be located near the center of the opposite side surface.
  • the palm of the user's right hand is facing the back of portable terminal 100, and the user is looking at display surface 121 from the Z-axis positive direction, as a normally assumed use state.
  • the portable terminal 100 is rotated 90 degrees in the “roll angle negative direction” from the state, the holding hand is determined to be the right hand.
  • the portable terminal 100 is rotated 90 degrees in the “roll angle minus direction” from the state where the user is looking at the display surface 121 from the Z axis plus direction. I can not let it go. That is, in the normally assumed use state, it is out of the range of the movable range of the left hand.
  • portable terminal 100 in the normally assumed use state, portable terminal 100 is 90 degrees in the “roll angle negative direction” from the state where the user is looking at display surface 121 from the Z axis positive direction. In the case of rotation, it is possible to reliably prevent an erroneous determination of the holding hand.
  • the palm of the left hand of the user is facing the back of the portable terminal 100, and the user is looking at the display surface 121 from the Z-axis plus direction.
  • the handle is determined to be the left hand.
  • the portable terminal 100 is rotated 90 degrees in the “roll angle plus direction” from the state where the user is looking at the display surface 121 from the Z axis plus direction. I can not let it go. That is, in the normally assumed use state, it is out of the range of the movable range of the right hand.
  • portable terminal 100 in a normally assumed use state, portable terminal 100 is 90 degrees in the “roll angle plus direction” from the state where the user is looking at display surface 121 from the Z axis plus direction. In the case of rotation, it is possible to reliably prevent an erroneous determination of the holding hand.
  • the portable terminal 100 according to the present embodiment is 90 degrees in the “roll angle minus direction”, it is determined that the user's hand is the right hand, but the present invention is not limited thereto.
  • the portable terminal 100 according to the present embodiment can set the rotation angle in the “roll angle minus direction” to a rotation angle larger than 90 degrees or 90 degrees or more. It may be determined that the hand is the right hand.
  • the portable terminal 100 according to the present embodiment is a user when the rotation angle of the “roll angle plus direction” is a rotation angle larger than 90 degrees or a rotation angle of 90 degrees or more. It may be determined that the holding hand of the is the left hand.
  • a rotation angle larger than a predetermined angle or a rotation angle larger than a predetermined angle may be used.
  • the initial state in the case of the present embodiment, the state 1) determines that the holding hand is against the user's intention
  • the mobile terminal 100 placed with the display surface 121 facing downward is held by the left hand and erroneous determination is made by the operation of pointing the display surface 121 to the user himself.
  • times in the "roll angle minus direction” etc. can be considered.
  • FIG. 6 is a diagram for explaining an initial state of the mobile terminal 100.
  • the present embodiment can be applied even if the state where only the angle ⁇ is rotated in the “roll angle minus direction” is the initial state as the state 3. That is, from the state 3 shown in FIG. 6 rotated from the state 1 shown in FIG. 3 by the angle ⁇ , the user rotates the mobile terminal 100 90 degrees in the “roll angle minus direction” with the right hand (see FIG. When transitioning to a state 5 in which the arrow S) and the “roll angle minus direction” are rotated 90 degrees, the mobile terminal 100 according to the present embodiment can determine that the user's hand is the right hand.
  • one 3-axis acceleration sensor capable of detecting the gravitational acceleration is built in the sensor unit 105, but the present invention is not limited to this.
  • a plurality of acceleration sensors may be incorporated depending on the type and arrangement of the acceleration sensors.
  • the position of the sensor unit 105 does not have to be the center of a straight line connecting opposing surfaces of the surfaces (side surfaces) perpendicular to the display surface 121 of the portable terminal 100.
  • the sensor unit 105 when the sensor unit 105 is located in the vicinity of the side surface of the portable terminal 100, there is a possibility that the value of acceleration detected in the negative direction of the Z axis is small and hardly detected.
  • the direction of gravitational acceleration is completely parallel to the Y axis shown in FIG. 2 or FIG. 3, or when it is weightless, there is a possibility that the sensor unit 105 can not detect it.
  • the sensor section 305 configured of two three-axis acceleration sensors 305A and 305B capable of detecting an acceleration instead of the configuration of the sensor section 105 is a display surface of the mobile terminal 300.
  • the faces (side faces) perpendicular to 321 one each is disposed in the vicinity of the opposing face (see FIG. 8).
  • FIG. 7 is a block diagram showing a configuration of mobile terminal 300 according to the second embodiment.
  • the portable terminal 300 according to the second embodiment includes a display unit 101 that displays various functions of the portable terminal 300 and an operation unit that allows the user to operate various functions displayed on the display unit 101.
  • a sensor unit 305 provided inside the housing 350 of the portable terminal 300 and configured of two three-axis acceleration sensors 305A and 305B capable of detecting acceleration, display of the display unit 101, and various functions of the portable terminal 300
  • a control unit 307 that controls, a state management unit 309, and a handle determination unit 331 are provided.
  • the display unit 101 displays various functions of the mobile terminal 300.
  • the display unit 101 is configured to appropriately change the direction, the position, and the size of the display screen according to the user's hand under the control of the control unit 307 described later.
  • the sensor unit 305 includes two three-axis acceleration sensors 305A and 305B capable of detecting an acceleration. Although the triaxial acceleration sensors 305A and 305B are used, in the present embodiment, changes in acceleration only in the Z-axis direction are used for determination.
  • the two three-axis acceleration sensors 305A and 305B are respectively disposed in the vicinity of the two opposing surfaces 323 and 325 of the surfaces (side surfaces) perpendicular to the display surface 321 of the portable terminal 300.
  • the 3-axis acceleration sensor 305A is disposed in the vicinity of the left side surface 325 of the housing 350 of the portable terminal 300
  • the 3-axis acceleration sensor 305B is disposed in the vicinity of the right side surface 323 of the housing 350 of the portable terminal 300.
  • the two three-axis acceleration sensors 305A and 305B that constitute the sensor unit 305 respectively detect the acceleration in the negative Z-axis direction, and output the detected acceleration to the holding hand determination unit 331.
  • the absolute value of the Z axis minus direction acceleration detected by the 3-axis acceleration sensor 305A is the absolute value of the Z axis minus direction acceleration detected by the 3-axis acceleration sensor 305B.
  • the absolute value of the Z-axis negative direction detected by the 3-axis acceleration sensor 305B is larger than the absolute value of the Z-axis negative direction detected by the 3-axis acceleration sensor 305A.
  • the sensor unit 305 may not be configured by a three-axis acceleration sensor.
  • the acceleration in the negative Z-axis direction can be reworded as an acceleration in a direction from the display surface 321 side of the housing 350 of the portable terminal 300 toward the back surface 327 side.
  • the holding hand determination unit 331 uses a known method based on the amount of movement of each 3-axis acceleration sensor and the difference thereof. Calculate the rotation angle of the direction of. More specifically, the holding hand determination unit 331 calculates a rotation angle (roll angle) around the y axis.
  • rotational angle in a predetermined direction means that, when the user's handle is the right hand, the rotation axis Y3 is on the right side 323 side of the center of the case 350 of the portable terminal 300 and the portable terminal 300 is the user
  • the roll angle is a rotation angle when rotating by a predetermined angle in the minus roll angle direction about the rotation axis Y3.
  • the negative roll angle direction about the rotation axis Y3 located on the right side 323 side of the center of the case 350 of the portable terminal 300 is the left side of the case 350 of the portable terminal 300
  • the surface 325 is a direction from the display surface 321 to the back surface 327 (see FIG. 8).
  • rotational angle in a predetermined direction means that the rotation axis Y3 is closer to the left side 325 than the center of the case 350 of the portable terminal 300, and the portable terminal 300 is the user. It is a rotation angle when rotating by a predetermined angle in the roll angle plus direction about the rotation axis Y3 by the handle.
  • the roll angle plus direction centered on the rotation axis Y3 located on the left side 325 side of the center of the case 350 of the portable terminal 300 is the right side of the case 350 of the portable terminal 300
  • the surface 323 is a direction from the display surface 321 side to the back surface 327 side.
  • rotational angle in a predetermined direction is used in the same meaning.
  • the acceleration sensors 305A and 305B are respectively disposed in the vicinity of two opposing surfaces 323 and 325 in the surface (side surface) perpendicular to the display surface 321 of the portable terminal 300. Therefore, it can be expected that the value of the acceleration in the negative Z-axis direction detected by any one of the acceleration sensors becomes small.
  • the portable terminal 300 according to the present embodiment is 90 in the “roll angle plus direction” as the rotation angle of the portable terminal 300 in the predetermined direction. The degree can be detected.
  • FIG. 8 is a diagram (1) for explaining the movement of the portable terminal 300 for determining the user's hand (the right hand in this figure).
  • FIG. 9 is a diagram (2) for explaining the movement of the portable terminal 300 for determining the user's hand (the left hand in this figure).
  • the axis defining the direction detected by the sensor unit 305 and the rotation angle are the same as in FIG. In other words, orthogonal to each other with three axes X, Y, and Z orthogonal to each other, with the direction perpendicular to the display surface 321 including the display unit 101 as the Z axis direction with the centers of the three axis acceleration sensors 305A and 305B as centers.
  • the rotation angle around Z axis be the yaw angle
  • the rotation angle around Y axis be the roll angle
  • the rotation angle around X axis be the pitch angle.
  • the movement amount of the mobile terminal 300 in the predetermined direction detected by the sensor unit 305 can be defined by the rotation angle around each axis and the direction of the rotation angle.
  • the Y3 axis shown in FIG. 8 is an axis parallel to the above-mentioned Y axis. Since it is parallel to the Y axis, assuming a coordinate system in which the above-described orthogonal coordinate system is translated, the movement amount of the portable terminal 300 in the predetermined direction can be defined at the same rotation angle around the axis.
  • the reference axis of the rotation angle is shown at the upper left of FIG.
  • the Y3 axis shown in FIG. 8 is an axis in the front-rear direction of the portable terminal 300.
  • FIG. 9 is a diagram (2) for explaining the movement of the portable terminal 300 for determining the handle of the user (the left hand in this figure). Elements in common with FIG. 8 are assigned the same reference numerals and detailed explanations thereof will be omitted.
  • the reference axis of the rotation angle is shown at the upper left of FIG.
  • the Y3 axis shown in FIG. 9 is an axis in the front-rear direction of the portable terminal 300.
  • state 1 of the portable terminal 300 shown in FIG. 9 the user is looking at the display surface 321 from the Z-axis plus direction. Then, from the state where the user is looking at the display surface 321 from the Z-axis plus direction, the portable terminal 300 is rotated 90 degrees in the “roll angle plus direction” with the left hand (arrow Q1 in the figure).
  • the left side surface 325 of the case 350 of the portable terminal 300 centered on the rotation axis Y3 located on the left side 325 side of the center of the case 350 of the portable terminal 300 is the display surface 321 It is a direction from the side to the back surface 327 side. That is, the state of the portable terminal 300 transitions from the state 1 to the state 4 rotated 90 degrees in the “roll angle plus direction”.
  • the sensor unit 305 moves in the Z axis negative direction based on the three-axis acceleration sensors 305A and 305B.
  • the change in acceleration is detected and output to the hand determining unit 331 as a detected value.
  • the portable terminal 300 when the portable terminal 300 rotates in the “roll angle negative direction”, it can be expected that the change in acceleration in the Z axis negative direction becomes small by the three-axis acceleration sensor 305B on the rotation axis Y1 side. Similarly, when the portable terminal 300 rotates in the “roll angle plus direction”, it can be expected that in the 3-axis acceleration sensor 305A on the rotation axis Y1 side, the change in acceleration in the Z-axis minus direction becomes smaller.
  • the holding hand determination unit 331 calculates the rotation angle of the mobile terminal 300 in the predetermined direction based on the detection value of the sensor unit 305 described above, and the user's hand is “right hand” from the calculated rotation angle in the predetermined direction. And “left hand” is determined.
  • the method for calculating the rotation angle (the direction of rotation and the angle thereof) of the mobile terminal 300 in the predetermined direction in the holding hand determination unit 331 is calculated from the acceleration in the Z-axis direction detected by each of the three-axis acceleration sensors 305A and 305B. It can be calculated by a known method based on the amount of movement and the difference thereof.
  • the holding hand determination unit 331 determines that the rotation angle in the predetermined direction of the portable terminal 300 calculated by the holding hand determination unit 331 is “the rotation angle in the predetermined direction of the portable terminal 300” held by the holding hand determination unit 331. It is the same as the determination criterion of the movement amount when rotated 90 degrees in the “roll angle minus direction” based on the determination criterion (hereinafter referred to as “determination criterion of rotation angle”), and based on the detection value of the sensor unit 305 When it is determined that the sensor unit 305 detects a change in acceleration in the Z-axis negative direction, the holding hand determination unit 331 determines that the user's hand is the right hand.
  • the holding hand determination unit 331 sets the rotation angle in the predetermined direction of the portable terminal 300 calculated by the holding hand determination unit 331 to “the rotation angle in the predetermined direction of the portable terminal 300” held by the holding hand determination unit 331. It is the same as the determination criterion of the rotation angle when rotated 90 degrees in the “roll angle plus direction” based on the determination criterion (hereinafter referred to as “determination criterion of the rotation angle”), and based on the detection value of the sensor unit 105 When it is determined that the sensor unit 105 detects a change in acceleration in the Z-axis negative direction, the holding hand determination unit 331 determines that the user's hand is the left hand. In addition, the holding hand determination unit 131 holds the determination reference of the rotation angle based on the rotation angle around each axis in advance in a storage element (not shown) as data.
  • the holding hand determination unit 331 outputs the determination result of the user's hand to the control unit 307.
  • the control unit 307 compares the determination result of the user's hand, which is input from the handle determination unit 331, with the information of the user's currently held hand. If the information on the current user's hand is different from the determination result of the user's hand input from the hand determination unit 331, the control unit 307 holds the information on the user's current hand held by the user. Update based on the hand judgment result. When the information on the user's hand currently held is the same as the determination result of the user's hand input from the hand holding determination unit 331, the control unit 307 holds the current user's hand. Do not update the information of
  • control unit 307 controls the display unit 101 to change the direction, the position, and the size of the display screen of the display unit 101 based on the information of the current user's hand held.
  • the control unit 307 also controls various functions displayed on the display unit 101 based on the input from the operation unit 103.
  • the state management unit 309 manages information on the hand of the user of the portable terminal 300 as information indicating the current state of the portable terminal.
  • the information indicating the rotation angle in the predetermined direction of the portable terminal 300 is 90 degrees rotation in the “roll angle minus direction” when the holding hand is determined to be the right hand, and “rolling when the holding hand is determined to be the left hand It is a 90 degree rotation in the angle plus direction.
  • FIG. 10 is a switching control flow of the display unit 101 according to the second embodiment.
  • step ST801 the sensor unit 305 detects x, y, z components (detection values) of the acceleration of the mobile terminal 300. That is, the sensor unit 305 detects x, y, and z components of the acceleration of the acceleration sensor 305A and x, y, and z components (detection values) of the acceleration of the acceleration sensor 305B. Then, the process transitions to step ST803.
  • step ST803 the holding hand determination unit 331 calculates a rotation angle in a predetermined direction based on the movement amount calculated from the acceleration in the Z-axis negative direction detected by each of the 3-axis acceleration sensors 305A and 305B and the difference thereof. Then, the process transitions to branch ST 805.
  • the holding hand determination unit 331 compares the calculated rotation angle in a predetermined direction with the determination criterion of the rotation angle, and determines whether the user's hand is the right hand. If it is determined that the user's hand is the right hand (in the case of Yes), the process proceeds to step ST807, and if not (in the case of No), the process proceeds to branch ST809.
  • step ST 807 the holding hand determination unit 331 outputs the determination result (right hand) of the user's hand to the control unit 307. Then, the process transitions to branch ST811.
  • control unit 307 compares the determination result (right hand) of the user's hand with the information indicating the user's hand held by the state management unit 309, and determines whether they are different. If they are different (in the case of Yes), the process proceeds to step ST815, and if they are the same (in the case of No), the process returns to step ST801.
  • control unit 307 updates information (left hand) indicating the user's hand held by state management unit 309 based on the determination result of the user's hand, and displays display unit 101 for the right hand. Switch to the screen.
  • the holding hand determination unit 331 determines whether the user's holding hand is the left hand. If it is determined that the user's hand is the left hand (in the case of Yes), the process proceeds to step ST813. If not (in the case of No), the process returns to step ST801.
  • step ST813 the holding hand determination unit 331 outputs the determination result (left hand) of the user's holding hand to the control unit 307. Then, the process transitions to branch ST 817.
  • step ST 817 the determination result (left hand) of the user's handle is compared with the information indicating the user's handle held by the state management unit 309, and it is determined whether or not they are different. If they are different (in the case of Yes), the process proceeds to step ST819. If they are the same (in the case of No), the process returns to step ST801.
  • control unit 307 updates the information indicating the user's handle held by state management unit 309 based on the determination result of the user's hand, and switches display unit 101 to the display screen for the left hand. .
  • the portable terminal 300 has x, y, z components of the acceleration detected by the sensor unit 305 (that is, x, y, z components of the acceleration of the acceleration sensor 305A, and x of the acceleration of the acceleration sensor 305B).
  • the rotation angle in a predetermined direction can be calculated by the y, z components), and the user's hand (assuming one hand in the present embodiment) can be determined. Therefore, portable terminal 300 according to the present embodiment can switch the display of display unit 101 according to the user's hand. Therefore, portable terminal 300 according to the present embodiment can perform convenient display for the user via display unit 101, in accordance with the user's handle.
  • the three-axis acceleration sensors 305A and 305B are provided in the housing 350. Therefore, at the time of detection, it is assumed that the palm of the user's right or left hand is directed to the back of portable terminal 300 and the user is looking at display surface 321 from the Z-axis plus direction. There is no restriction on holding the portable terminal 300 by placing a finger on any part of the portable terminal 300.
  • acceleration sensors 305A and 305B are respectively disposed in the vicinity of two opposing surfaces 323 and 325 in the surface (side surface) perpendicular to display surface 321 of portable terminal 300. . Therefore, it can be expected that the value of the acceleration in the negative direction of the Z axis detected by any one of the acceleration sensors will be small.
  • the palm of the user's right hand is facing the back of portable terminal 300 and the user is looking at display surface 321 from the Z-axis plus direction, as a normally assumed use state.
  • the portable terminal 300 is rotated 90 degrees in the “roll angle negative direction” from the state, the holding hand is determined to be the right hand.
  • the portable terminal 300 is rotated 90 degrees in the “roll angle minus direction” from the state where the user is looking at the display surface 321 from the Z axis plus direction. I can not let it go. That is, in the normally assumed use state, it is out of the range of the movable range of the left hand.
  • portable terminal 300 in a normally assumed use state, portable terminal 300 is 90 degrees in the “roll angle minus direction” from the state where the user is looking at display surface 321 from the Z axis plus direction. In the case of rotation, it is possible to reliably prevent an erroneous determination of the holding hand.
  • the palm of the left hand of the user is facing the back of the portable terminal 300, and the user is looking at the display surface 321 from the Z-axis plus direction.
  • the handle is determined to be the left hand.
  • the portable terminal 300 is rotated 90 degrees in the “roll angle plus direction” from the state where the user is looking at the display surface 321 from the Z axis plus direction. I can not let it go. That is, in the normally assumed use state, it is out of the range of the movable range of the right hand.
  • portable terminal 300 in a normally assumed use state, portable terminal 300 is 90 degrees in the “roll angle plus direction” from the state where the user is looking at display surface 321 from the Z axis plus direction. In the case of rotation, it is possible to reliably prevent an erroneous determination of the holding hand.
  • the mobile terminal 300 determines that the user's hand is the right hand, but the present invention is not limited thereto.
  • the portable terminal 300 according to the present embodiment is configured such that the rotation angle in the “roll angle minus direction” is greater than 90 degrees or 90 degrees or more. It may be determined that the hand is the right hand.
  • the portable terminal 300 according to the present embodiment is a user when the rotation angle of the “roll angle plus direction” is a rotation angle larger than 90 degrees or a rotation angle of 90 degrees or more. It may be determined that the holding hand of the is the left hand.
  • the rotation angle larger than the predetermined angle or the rotation angle larger than the predetermined angle may be used instead of setting the rotation angle larger than 90 degrees or the rotation angle larger than 90 degrees.
  • the mobile terminal 300 is not affected by the direction of gravity, and in any initial state, from the state where the user is looking at the display surface 321 from the Z-axis plus direction to the “roll angle minus direction”. Can be determined to be the right hand.
  • FIG. 11 is a block diagram showing the configuration of mobile terminal 500 according to the third embodiment.
  • the portable terminal 500 according to the third embodiment includes a display unit 101 for displaying various functions of the portable terminal 500, and an operation unit for the user to operate various functions displayed on the display unit 101. 103, a sensor unit 505 including an angular velocity sensor 505A that can detect an angular velocity, a control unit 507 that controls the display of the display unit 101 and various functions of the mobile terminal 500, a state management unit 509, and a handle determination unit 531; Equipped with
  • the display unit 101 displays various functions of the mobile terminal 500.
  • the display unit 101 is configured to appropriately change the direction, position, and size of the display screen according to the user's hand under the control of the control unit 507 described later.
  • the sensor unit 505 is configured of one angular velocity sensor 505A that can detect an angular velocity.
  • Angular velocity sensor 505A is provided substantially in the center between opposing surfaces 523 and 525 of the surfaces (side surfaces) perpendicular to display surface 521 of portable terminal 500, and is provided in housing 550 of portable terminal 500. .
  • the sensor unit 505 detects an angular velocity in a predetermined direction by the angular velocity sensor 505A.
  • the sensor unit 505 outputs the “angular velocity of the roll angle” to the hand determining unit 531 using the angular velocity in a predetermined direction as a detected value.
  • the position of the angular velocity sensor 505A may be approximately at the center between the surfaces 523 and 525 facing each other in the surface (side surface) perpendicular to the display surface 521 of the portable terminal 500.
  • FIG. 12 is a diagram (1) for explaining the movement of the portable terminal 500 for determining the user's hand (right hand in this figure), and FIG. 13 is for determining the user's hand (left hand in this figure) It is a figure (2) explaining the motion of the portable terminal 500 for doing.
  • the axis defining the direction detected by the sensor unit 505 and the rotation angle are the same as in FIG. That is, an orthogonal coordinate system including three axes X, Y, and Z orthogonal to each other is set, with the direction perpendicular to the display surface 521 including the display unit 101 as the Z axis direction around the center of the angular velocity sensor 505A.
  • the rotation angle around Z axis be the yaw angle
  • the rotation angle around Y axis be the roll angle
  • the rotation angle around X axis be the pitch angle. That is, the angular velocity in the predetermined direction detected by the sensor unit 505 can be defined by the angular velocity around each axis and the direction thereof.
  • the Y5 axis shown in FIG. 12 is an axis parallel to the above-mentioned Y axis. Since it is parallel to the Y axis, assuming a coordinate system in which the above-described orthogonal coordinate system is translated, an angular velocity in a predetermined direction can be defined at a similar rotation angle around the axis.
  • the reference axis of the rotation angle is shown at the upper left of FIG.
  • the Y5 axis illustrated in FIG. 12 is an axis in the front-rear direction of the portable terminal 500.
  • the surface 525 is a direction from the display surface 521 side to the back surface 527 side (see FIG. 12). That is, the state of the portable terminal 500 transitions from the state 1 to the state 2 rotated 90 degrees in the “roll angle minus direction”.
  • rotational angle in a predetermined direction means that the rotation axis Y5 is closer to the left side surface 525 than the center of the case 550 of the portable terminal 500, and the portable terminal 500 is the user. It is a rotation angle when rotating by a predetermined angle in the roll angle plus direction about the rotation axis Y5 by the handle.
  • the roll angle plus direction centering on the rotation axis Y5 on the left side 525 side of the center of the case 550 of the portable terminal 500 is the right side of the case 550 of the portable terminal 500.
  • the surface 523 is a direction from the display surface 521 side to the back surface 527 side.
  • rotational angle in a predetermined direction is used in the same meaning.
  • FIG. 13 is a diagram (2) for explaining the movement of the portable terminal 500 for determining the handle of the user (the left hand in this figure). Elements in common with FIG. 12 are assigned the same reference numerals and detailed explanations thereof will be omitted.
  • the reference axis of the rotation angle is shown at the upper left of FIG.
  • the Y5 axis illustrated in FIG. 13 is an axis in the front-rear direction of the portable terminal 500.
  • state 1 of the portable terminal 500 shown in FIG. 13 the user is looking at the display surface 521 from the Z-axis plus direction. Then, from the state where the user is looking at display surface 521 from the Z-axis plus direction, portable terminal 500 is rotated 90 degrees in the “roll angle plus direction” with the left hand (arrow R1 in the figure). That is, the state of the portable terminal 500 transitions from the state 1 to the state 4 rotated 90 degrees in the “roll angle plus direction”.
  • the sensor unit 505 When the state of the portable terminal 500 transitions from the state 1 to the state 2 (see FIG. 12) or the state 4 (see FIG. 13), the sensor unit 505 performs (1) Z axis negative direction based on detection by the angular velocity sensor 505A. (2) The angular velocity of the roll angle is detected, and the detection results are output to the holding hand determination unit 531 as detection values.
  • the acceleration in the negative Z-axis direction can be reworded as an acceleration in the direction from the display surface 521 side of the housing 550 of the portable terminal 500 toward the back surface 527 side.
  • the holding hand determination unit 531 calculates the rotation angle of the predetermined direction of the portable terminal 500 based on the detection value (angular velocity and its direction) of the sensor unit 505 described above, and the user calculates the rotation angle of the predetermined direction. It is determined whether the handle is "right hand” or "left hand”.
  • the method for calculating the rotation angle in the predetermined direction from the temporal change of the angular velocity detected by the sensor unit 505 as a detection value can be obtained by a known calculation method. Specifically, the rotation angle can be determined by integrating the angular velocity.
  • the holding hand determination unit 531 determines that the rotation angle in the predetermined direction of the portable terminal 500 calculated by the holding hand determination unit 531 is “the rotation angle in the predetermined direction of the portable terminal 500 held by the holding hand determination unit 531. This is the same as the determination criterion of the rotation angle when rotated 90 degrees in the “roll angle minus direction” based on the determination criterion (hereinafter referred to as “determination criterion of the rotation angle”), and based on the detection value of the sensor unit 505 When it is determined that the sensor unit 505 detects a change in acceleration in the Z-axis negative direction, the holding hand determining unit 531 determines that the user's holding hand is the right hand.
  • the holding hand determination unit 531 is configured such that the rotation angle in the predetermined direction of the portable terminal 500 calculated by the holding hand determination unit 531 is “the rotation angle in the predetermined direction of the portable terminal 500 held by the holding hand determination unit 531. This is the same as the determination criterion of the rotation angle when rotated 90 degrees in the “roll angle plus direction” based on the determination criterion (hereinafter referred to as “determination criterion of rotation angle”), and based on the detection value of the sensor unit 505 When it is determined that the sensor unit 505 detects a change in acceleration in the Z-axis negative direction, the holding hand determining unit 531 determines that the user's holding hand is the left hand. In addition, the holding hand determination unit 531 holds the determination reference of the rotation angle based on the rotation angle around each axis in advance in a storage element (not shown) as data.
  • the handle determination unit 531 outputs the determination result of the user's handle to the control unit 507.
  • the control unit 507 compares the determination result of the user's hand, which is input from the handle determination unit 531, with the information of the user's currently held hand. If the currently held information of the user's hand is different from the determination result of the user's hand input from the holding hand determination unit 531, the control unit 507 determines that the currently held user's hand information is It updates based on the determination result of the user's hand, and outputs the information of the user's hand currently held to the control unit 507. When the information on the user's hand currently held is the same as the determination result of the user's hand input from the hand determination unit 531, the control unit 507 holds the user's currently held hand Do not update the information of
  • the control unit 507 controls the display unit 101 to change the direction, the position, and the size of the display screen of the display unit 101 based on the information of the current user's hand held.
  • the control unit 507 also controls various functions displayed on the display unit 101 based on the input from the operation unit 103.
  • the state management unit 509 manages information on the hand of the user of the portable terminal 500 as information indicating the current state of the portable terminal.
  • the information indicating the rotation angle in the predetermined direction of the portable terminal 500 is 90 degrees rotation in the “roll angle minus direction” when the holding hand is determined to be the right hand, and “rolling when the holding hand is determined to be the left hand It is a 90 degree rotation in the angle plus direction.
  • FIG. 14 is a switching control flow of the display unit 101 according to the third embodiment.
  • step ST1101 the sensor unit 505 detects (1) a change in acceleration in the negative direction of the Z axis, and (2) an angular velocity of the roll angle. Then, the process transitions to step ST1103.
  • step ST1103 the holding hand determination unit 531 calculates a rotation angle in a predetermined direction based on the detection value of the sensor unit 505. Then, the process transitions to branch ST1105.
  • the holding hand determination unit 531 compares the calculated rotation angle in a predetermined direction with the determination criterion of the rotation angle, and determines whether the user's hand is the right hand. If it is determined that the user's hand is the right hand (in the case of Yes), the process proceeds to step ST1107. If not (in the case of No), the process proceeds to branch ST1109.
  • step ST1107 the holding hand determination unit 531 outputs the determination result (right hand) of the user's holding hand to the control unit 507. Then, the process transitions to branch ST1111.
  • control unit 507 compares the determination result (right hand) of the user's hand with the information indicating the user's hand held by the state management unit 509, and determines whether they are different. If they are different (in the case of Yes), the process proceeds to step ST1115. If they are the same (in the case of No), the process returns to step ST1101.
  • step ST1115 the control unit 507 updates the information indicating the user's hand held by the state management unit 509 based on the determination result of the user's hand, and switches the display unit 101 to the display screen for the right hand.
  • the holding hand determination unit 531 determines whether the user's holding hand is the left hand. If it is determined that the user's hand is the left hand (in the case of Yes), the process proceeds to step ST1113; otherwise (the case of No), the process returns to step ST1101.
  • step ST1113 the holding hand determination unit 531 outputs the determination result (left hand) of the user's holding hand to the control unit 507. Then, the process transitions to branch ST1117.
  • control unit 507 compares the determination result (left hand) of the user's hand with the information indicating the user's hand held by the state management unit 509, and determines whether they are different. If they are different (in the case of Yes), the process proceeds to step ST1119. If they are the same (in the case of No), the process returns to step ST1101.
  • step ST1119 the control unit 507 updates the information indicating the user's hand held by the state management unit 509 based on the determination result of the user's hand, and switches the display unit 101 to the display screen for the left hand.
  • the portable terminal 500 according to the present embodiment calculates the rotation angle in the predetermined direction by the angular velocity in the predetermined direction of the portable terminal 500 detected by the sensor unit 505, and the user holds the hand (in the present embodiment, one hand). Can be determined. Therefore, portable terminal 500 according to the present embodiment can switch the display of display unit 101 according to the user's hand. Therefore, portable terminal 500 according to the present embodiment can perform convenient display for the user through the display unit 101 in accordance with the user's hand. Furthermore, portable terminal 500 according to the present embodiment detects an angular velocity in a predetermined direction by using angular velocity sensor 505A provided in housing 550.
  • the palm of the user's right hand is facing the back of portable terminal 500, and the user is looking at display surface 521 from the Z-axis plus direction
  • the holding hand is determined to be the right hand.
  • the portable terminal 500 is rotated 90 degrees in the “roll angle minus direction” from the state where the user is looking at the display surface 521 from the Z axis plus direction. I can not let it go. That is, in the normally assumed use state, it is out of the range of the movable range of the left hand.
  • portable terminal 500 in a normally assumed use state, portable terminal 500 is 90 degrees in the “roll angle negative direction” from the state where the user is looking at display surface 521 from the Z axis positive direction. In the case of rotation, it is possible to reliably prevent an erroneous determination of the holding hand.
  • the palm of the left hand of the user is facing the back of the portable terminal 500, and the user is looking at the display surface 521 from the Z-axis plus direction.
  • the handle is determined to be the left hand.
  • portable terminal 500 in a normally assumed use state, when the right hand is the holding hand, the portable terminal 500 is rotated 90 degrees in the “roll angle plus direction” from the state where the user is looking at the display surface 521 from the Z axis plus direction. I can not let it go. That is, in the normally assumed use state, it is out of the range of the movable range of the right hand. Therefore, in portable terminal 500 according to the present embodiment, in a normally assumed use state, portable terminal 500 is 90 degrees in the “roll angle plus direction” from the state where the user is looking at display surface 521 from the Z axis plus direction. In the case of rotation, it is possible to reliably prevent an erroneous determination of the holding hand.
  • the mobile terminal 500 according to the present embodiment is 90 degrees in the “roll angle minus direction”, it is determined that the user's hand is the right hand, but the present invention is not limited thereto.
  • the portable terminal 500 according to the present embodiment is the right hand of the user's hand when the rotation angle in the “roll angle minus direction” is larger than 90 degrees. You may judge.
  • the portable terminal 500 according to the present embodiment is the left hand of the user's hand when the rotation angle in the “roll angle plus direction” is larger than 90 degrees. It may be determined that In this case, instead of setting the rotation angle larger than 90 degrees, the rotation angle larger than 90 degrees or the rotation angle larger than 90 degrees, or the rotation angle larger than the predetermined angle or the rotation angle larger than the predetermined angle It is also good.
  • the mobile terminal 500 placed with the display surface 521 facing downward is held by the left hand and erroneous determination is made by the operation of pointing the display surface 521 to the user itself It is possible that there is a case in which it is determined that the wheel moves inward and is rotated 90 degrees in the "roll angle minus direction".
  • mobile terminal 500 is not affected by the direction of gravity, and in any initial state, from the state where the user is looking at display surface 521 from the Z-axis positive direction, to portable terminal 500 in the “roll angle negative direction”. Can be determined to be the right hand.
  • Each function block employed in the description of each of the aforementioned embodiments may typically be implemented as an LSI constituted by an integrated circuit. These may be individually made into one chip, or may be made into one chip so as to include some or all. Although an LSI is used here, it may be called an IC, a system LSI, a super LSI, or an ultra LSI depending on the degree of integration.
  • the method of circuit integration is not limited to LSI's, and implementation using dedicated circuitry or general purpose processors is also possible.
  • a programmable field programmable gate array FPGA
  • a reconfigurable processor may be used which can reconfigure connection and setting of circuit cells in the LSI.
  • the portable terminal according to the present invention has an effect that it is possible to switch the display of the display portion according to the handle without being restricted by the way the user holds or the position of the finger, and as a portable telephone etc. It is useful.

Abstract

Disclosed is a mobile terminal which applicably switches the display of a display section in accordance with the hand that is holding the mobile terminal, without there being restrictions on the manner in which the user holds the mobile terminal or finger positions. The mobile terminal is provided with: a display section (101) for performing display; a sensor section (105) for detecting movement of the actual terminal; a holding-hand determination section (131) for determining, in accordance with the movement of the actual terminal detected by the sensor section (105), which hand is holding the mobile terminal; and a control section (107) for switching the display of the display section (101) to a display suitable for the hand holding the mobile device, in accordance with the determination result of the holding-hand determination section (131).

Description

携帯端末、表示制御方法、及び表示制御プログラムPortable terminal, display control method, and display control program
　本発明は、携帯端末、表示制御方法、及び表示制御プログラムに関し、特に加速度センサにより持ち手を判定することができる携帯端末、表示制御方法、及び表示制御プログラムに関する。 The present invention relates to a portable terminal, a display control method, and a display control program, and more particularly to a portable terminal capable of determining a hand with an acceleration sensor, a display control method, and a display control program.
　特許文献１では、利き手判定スイッチと電源スイッチとの状態に基づいて操作者の利き手が右手であるか左手であるかを判定する技術が開示されている。また、特許文献２では、感圧センサにより操作者の手の接触を検出し、その検出結果に基づき持ち手を判定している携帯端末が開示されている。 Patent Document 1 discloses a technique for determining whether the operator's dominant hand is the right hand or the left hand based on the states of the dominant hand determination switch and the power switch. Further, Patent Document 2 discloses a portable terminal in which a touch sensor detects a touch of an operator's hand, and a holding hand is determined based on the detection result.
日本国特許第４１０６８０７号明細書Japanese Patent No. 4106807 Specification 日本国特開２００７－１７９５０２号公報Japanese Patent Application Laid-Open No. 2007-179502
　しかし、特許文献１では、利き手判定スイッチを用いて持ち手を判定するが、利き手判定スイッチはどちらの手でも操作可能であり、誤操作を防止する有効な手段が開示されてない。また、電源スイッチとの併用により切り替えを行うため、右から左、もしくは左から右に携帯端末をユーザが持ち替えた際、迅速に持ち手モードを切り替えることができない。 However, in Patent Document 1, although the hand is determined using the dominant hand determination switch, the dominant hand determination switch can be operated with either hand, and effective means for preventing erroneous operation is not disclosed. In addition, since the switching is performed in combination with the power switch, when the user changes the portable terminal from right to left or from left to right, it is not possible to quickly switch the holding mode.
　また、特許文献２では、ユーザが携帯端末をどちらの手で持っているか感圧センサにより判定するが、正しい判定が行われるためには感圧センサの位置に応じて、ユーザの持ち方や指を置く位置に制約が生じてしまう。さらに、携帯端末の大きさが、ユーザの手より大きい場合、特許文献２で開示されている方法は適用することが難しい。 Further, in Patent Document 2, it is determined by the pressure sensor that the user holds the portable terminal with which hand, but in order to make a correct determination, depending on the position of the pressure sensor, the user's holding method or finger There is a restriction on the position to place the Furthermore, if the size of the portable terminal is larger than the user's hand, the method disclosed in Patent Document 2 is difficult to apply.
　本発明の目的は、ユーザの持ち方や指の位置に依存せず、持ち手に応じて適用的に表示部の表示を切り替えることができる携帯端末、表示制御方法、及び表示制御プログラムを提供することである。 An object of the present invention is to provide a portable terminal, a display control method, and a display control program which can switch the display of the display unit according to the handle regardless of how the user holds or the position of a finger. It is.
　本発明は、表示を行う表示部と、自端末の動きを検出するセンサ部と、前記センサ部の検出した前記自端末の動きに基づき、持ち手を判定する持ち手判定部と、前記持ち手判定部の判定結果に基づき、前記表示部の表示を持ち手に応じた表示に切り替える制御部と、を備える携帯端末を提供する。 The present invention comprises a display unit for displaying, a sensor unit for detecting the movement of the own terminal, and a hand determining unit for judging the hand based on the movement of the own terminal detected by the sensor unit; And a control unit configured to switch the display of the display unit to a display according to the hand based on the determination result of the determination unit.
　上記携帯端末では、前記センサ部は、当該携帯端末の筐体内に設けられ、前記表示部は、当該携帯端末の筐体の一の面を構成する表示面に設けられ、前記持ち手判定部は、当該携帯端末の筐体の前後方向を軸として、当該携帯端末の筐体の左側面が前記表示面側から前記表示面と対向する背面側に向かう向きに所定角度以上回転する第１の動きを検出した場合、前記持ち手が右手であると判定し、当該携帯端末の筐体の右側面が、前記表示面側から前記表示面と対向する背面側に向かう向きに所定角度以上回転する第２の動きを検出した場合、前記持ち手が左手であると判定する。 In the mobile terminal, the sensor unit is provided in a housing of the mobile terminal, the display unit is provided on a display surface constituting one surface of the housing of the mobile terminal, and the holding hand judging unit is provided. A first movement in which a left side surface of a casing of the portable terminal rotates from the display surface side toward a back surface facing the display surface by a predetermined angle or more, with the front-rear direction of the casing of the portable terminal as an axis And the right side surface of the case of the portable terminal rotates from the display surface side toward the back surface opposite to the display surface by a predetermined angle or more. When the movement of 2 is detected, it is determined that the handle is the left hand.
　上記携帯端末では、前記センサ部は、重力加速度を検出できる１つの３軸加速度センサで構成される。 In the portable terminal, the sensor unit is configured of one three-axis acceleration sensor capable of detecting a gravitational acceleration.
　上記携帯端末では、前記センサ部は、前記筐体の各側面の中央に設けられた２つの３軸加速度センサで構成される。 In the portable terminal, the sensor unit is configured of two three-axis acceleration sensors provided at the centers of the side surfaces of the housing.
　上記携帯端末では、前記センサ部は、前記筐体の側面の間の中央に設けられた１つの角速度を検出可能な加速度センサで構成される。 In the portable terminal, the sensor unit is configured by an acceleration sensor which can detect one angular velocity provided at the center between the side surfaces of the housing.
　上記携帯端末では、前記持ち手判定部は、前記第１の動きを検出した後、前記第１の動きとほぼ同じ軌道を逆方向に戻る動きを検出した場合、前記持ち手が右手であると判定し、前記第２の動きを検出した後、前記第２の動きとほぼ同じ軌道を逆方向に戻る動きを検出した場合、前記持ち手が左手であると判定する。 In the portable terminal, when the holding hand determining unit detects a movement that returns in the reverse direction substantially the same trajectory as the first movement after detecting the first movement, the holding hand is the right hand. After the determination and the detection of the second movement, when it is determined that the movement returning the trajectory substantially the same as the second movement in the opposite direction is detected, it is determined that the handle is the left hand.
　また、本発明は、センサ部により、自端末の動きを検出する検出ステップと、持ち手判定部により、前記センサ部の検出した前記自端末の動きに基づき、持ち手を判定する判定ステップと、前記持ち手判定部の判定結果に基づき、当該携帯端末の表示部の表示を前記持ち手に応じた表示にする表示切り替えステップと、を備える表示制御方法を提供する。　　　 The present invention also includes a detecting step of detecting the movement of the own terminal by the sensor unit, and a judging step of determining the holding hand based on the movement of the own terminal detected by the sensor unit by the holding hand judging unit; A display control method comprising: a display switching step of displaying a display on the display unit of the portable terminal according to the hand based on the determination result of the hand determination unit.
　また、本発明は、上記表示制御方法の各ステップを実行させるための表示制御プログラムを提供する。 The present invention also provides a display control program for executing the steps of the above display control method.
　本発明に係る携帯端末によれば、ユーザの持ち方や指の位置に制約を受けず、持ち手に応じて適用的に表示部の表示を切り替えることができる。 According to the portable terminal of the present invention, it is possible to switch the display of the display portion according to the handle, without being restricted by the way of holding the user or the position of the finger.
実施の形態１に係る携帯端末１００の構成を示すブロック図Block diagram showing the configuration of the mobile terminal 100 according to the first embodiment センサ部１０５により検出される方向を定義する基準軸を説明する図The figure which explains the standard axis which defines the direction which is detected by sensor section 105 携帯端末１００の動きを説明する図（１）Diagram (1) explaining the movement of the mobile terminal 100 携帯端末１００の動きを説明する図（２）Diagram (2) explaining the movement of the mobile terminal 100 実施の形態１における表示部１０１の切り替え制御フローSwitching control flow of the display unit 101 according to the first embodiment 携帯端末１００の初期状態を説明する図A diagram for explaining an initial state of the mobile terminal 100 実施の形態２に係る携帯端末３００の構成を示すブロック図Block diagram showing configuration of portable terminal 300 according to Embodiment 2 携帯端末３００の動きを説明する図（１）Diagram (1) explaining the movement of the portable terminal 300 携帯端末３００の動きを説明する図（２）Diagram (2) explaining the movement of the mobile terminal 300 実施の形態２における表示部１０１の切り替え制御フローSwitching Control Flow of Display Unit 101 in Second Embodiment 実施の形態３に係る携帯端末５００の構成を示すブロック図Block diagram showing configuration of portable terminal 500 according to Embodiment 3 携帯端末５００の動きを説明する図（１）Diagram (1) explaining the movement of the portable terminal 500 携帯端末５００の動きを説明する図（２）Diagram (2) explaining the movement of the portable terminal 500 実施の形態３における表示部１０１の切り替え制御フローSwitching control flow of display unit 101 in the third embodiment
　以下、本発明の実施の形態について、図面を参照して説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
（実施の形態１）
　図１は、実施の形態１に係る携帯端末１００の構成を示すブロック図である。図１に示すように、実施の形態１に係る携帯端末１００は、携帯端末１００の各種機能を表示する表示部１０１と、表示部１０１に表示された各種機能をユーザが操作するための操作部１０３と、センサ部１０５と、制御部１０７と、状態管理部１０９と、持ち手判定部１３１とを備える。 Embodiment 1
FIG. 1 is a block diagram showing the configuration of mobile terminal 100 according to the first embodiment. As shown in FIG. 1, a mobile terminal 100 according to the first embodiment includes a display unit 101 that displays various functions of the mobile terminal 100 and an operation unit that allows the user to operate various functions displayed on the display unit 101. And 103, a sensor unit 105, a control unit 107, a state management unit 109, and a handle determination unit 131.
　表示部１０１は、携帯端末１００の各種機能を表示する。また、表示部１０１は、後述する制御部１０７の制御に基づき、表示画面の方向、位置、及び大きさが、ユーザの持ち手（右手又は左手）に応じて適宜切り替わるよう構成されている。 The display unit 101 displays various functions of the mobile terminal 100. The display unit 101 is configured to switch the direction, position, and size of the display screen as appropriate according to the user's hand (right hand or left hand) based on the control of the control unit 107 described later.
　センサ部１０５は、携帯端末１００の筐体１５０のほぼ中心に位置する。本実施の形態１では、センサ部１０５には、重力加速度を検出できる３軸加速度センサが１つ内蔵されている例について説明する。センサ部１０５は、センサ部１０５に内蔵されている加速度センサにより、（１）Ｚ軸マイナス方向への加速度、（２）携帯端末１００から見た重力方向の変化を、検出する。そして、センサ部１０５は重力加速度のｘ、ｙ、ｚ成分を検出値として、持ち手判定部１３１へ出力する。なお、Ｚ軸マイナス方向への加速度とは、携帯端末１００の筐体１５０の表示面１２１側から背面１２７側に向かう方向への加速度と言い換えることができる。 The sensor unit 105 is located substantially at the center of the housing 150 of the mobile terminal 100. In the first embodiment, an example in which one three-axis acceleration sensor capable of detecting a gravitational acceleration is built in the sensor unit 105 will be described. The sensor unit 105 detects (1) acceleration in the negative direction of the Z-axis and (2) change in the direction of gravity as viewed from the portable terminal 100 by an acceleration sensor built in the sensor unit 105. Then, the sensor unit 105 outputs the x, y, and z components of the gravitational acceleration as detected values to the holding hand determination unit 131. The acceleration in the negative Z-axis direction can be reworded as an acceleration in a direction from the display surface 121 side of the housing 150 of the portable terminal 100 toward the back surface 127 side.
　持ち手判定部１３１は、センサ部１０５の検出値の時間変化に基づき、携帯端末１００の所定の向きの回転角を算出する。すなわち、持ち手判定部１３１は、検出された（１）Ｚ軸マイナス方向への加速度の時間変化、（２）携帯端末１００から見た重力方向の変化から、所定の向きの回転角を算出する。より詳細には、持ち手判定部１３１は、所定の向きの回転角の各成分として、ｘ軸周りの回転角（ピッチ角）、ｙ軸周りの回転角（ロール角）、ｚ軸周りの回転角（ヨー角）を算出する。 The holding hand determination unit 131 calculates the rotation angle of the mobile terminal 100 in a predetermined direction based on the time change of the detection value of the sensor unit 105. That is, the holding hand determination unit 131 calculates a rotation angle in a predetermined direction from (1) temporal change in acceleration in the negative Z-axis direction and (2) change in gravity direction viewed from the portable terminal 100. . More specifically, the holding hand determination unit 131 determines the rotation angle around the x axis (pitch angle), the rotation angle around the y axis (roll angle), and the rotation around the z axis as each component of the rotation angle in a predetermined direction. Calculate the angle (yaw angle).
　ここで、「所定の向きの回転角」とは、ユーザの持ち手が右手の場合、回転軸Ｙ１が携帯端末１００の筐体１５０の中央よりも右側面１２３側にあり、携帯端末１００がユーザの持ち手により、回転軸Ｙ１を中心としてロール角マイナス方向に所定の角度分回転した際の回転角である。さらに、ユーザの持ち手が右手の場合、携帯端末１００の筐体１５０の中央よりも右側面１２３側にある回転軸Ｙ１を中心としたロール角マイナス方向は、携帯端末１００の筐体１５０の左側面１２５が表示面１２１側から背面１２７側に向う方向である（図３参照）。 Here, “rotational angle in a predetermined direction” means that, when the user's handle is the right hand, the rotation axis Y1 is closer to the right side surface 123 than the center of the housing 150 of the portable terminal 100, and the portable terminal 100 is the user It is a rotation angle at the time of rotating by a predetermined angle in the roll angle minus direction centering on the rotation axis Y1 by the handle of. Furthermore, when the user holds the right hand, the negative roll angle direction about the rotation axis Y1 located on the right side 123 side of the center of the case 150 of the portable terminal 100 is the left side of the case 150 of the portable terminal 100 The surface 125 is a direction from the display surface 121 to the back surface 127 (see FIG. 3).
　なお、本実施の形態では、ユーザの持ち手が右手の場合について説明しているが、ユーザの持ち手が左手の場合、次のように言い換えることができる。つまり、ユーザの持ち手が左手の場合、「所定の向きの回転角」とは、回転軸Ｙ１が携帯端末１００の筐体１５０の中央よりも左側面１２５側にあり、携帯端末１００がユーザの持ち手により、回転軸Ｙ１を中心としてロール角プラス方向に所定の角度分回転した際の回転角である。さらに、ユーザの持ち手が左手の場合、携帯端末１００の筐体１５０の中央よりも左側面１２５側にある回転軸Ｙ１を中心としたロール角プラス方向は、携帯端末１００の筐体１５０の右側面１２３が表示面１２１側から背面１２７側に向う方向である。以下、本実施の形態において、「所定の向きの回転角」は、同じ意味で用いる。例えば、回転開始直後及び回転終了直前の重力加速度を各軸の成分（ｘ軸成分、ｙ軸成分、ｚ軸成分）で表現した場合、携帯端末１００が「ロール角マイナス方向」に９０度回転する本実施の形態では、回転開始直後の重力加速度のベクトルＧ１（ａ、ｂ、ｃ）、回転終了直前の重力加速度のベクトルＧ２（ｃ、ｂ、-ａ）（図３参照）又はＧ７（-ｃ、ｂ、ａ）（図４参照）から既知の算出方法で求めることができる。 In the present embodiment, the case where the user's handle is the right hand is described, but when the user's handle is the left hand, the following can be reworded. That is, when the user holds the left hand, “rotational angle in a predetermined direction” means that the rotation axis Y1 is closer to the left side 125 than the center of the case 150 of the portable terminal 100, and the portable terminal 100 is the user. It is a rotation angle when rotating by a predetermined angle in the roll angle plus direction about the rotation axis Y1 by the handle. Furthermore, when the user's handle is the left hand, the roll angle plus direction centered on the rotation axis Y1 located on the left side 125 side of the center of the casing 150 of the portable terminal 100 is the right side of the casing 150 of the portable terminal 100 The surface 123 is a direction from the display surface 121 side to the back surface 127 side. Hereinafter, in the present embodiment, “rotational angle in a predetermined direction” is used in the same meaning. For example, when the gravitational acceleration immediately after the start of rotation and immediately before the end of rotation is expressed by the components of each axis (x-axis component, y-axis component, z-axis component), the portable terminal 100 rotates 90 degrees in the “roll angle minus direction” In the present embodiment, vector G1 (a, b, c) of gravitational acceleration immediately after the start of rotation, vector G2 (c, b, -a) (see FIG. 3) of gravitational acceleration immediately before the end of rotation, or G7 (-c) , B, a) (see FIG. 4) by a known calculation method.
　そして、持ち手判定部１３１は、算出した所定の向きの回転角と「携帯端末１００の所定の向きの回転角の判定基準（以下、「回転角の判定基準」という）とを比較して、ユーザの持ち手が「右手」および「左手」のいずれであるかを判定する。 Then, the holding hand determination unit 131 compares the calculated rotation angle of the predetermined direction with the “determination reference of the rotation angle of the predetermined direction of the portable terminal 100 (hereinafter referred to as“ determination reference of the rotation angle ”), It is determined whether the user's handle is "right hand" or "left hand".
　ここで、図２、図３、図４を参照して、持ち手判定部１３１により算出される携帯端末１００の所定の向きの回転角について説明する。図２はセンサ部１０５により検出される方向を定義する基準軸を説明する図であり、図３はユーザの持ち手（本図では右手）を判定するための携帯端末１００の動きを説明する図（１）である。図４はユーザの持ち手（本図では左手）を判定するための携帯端末１００の動きを説明する図（２）である。 Here, with reference to FIG. 2, FIG. 3, and FIG. 4, the rotation angle in the predetermined direction of the portable terminal 100 calculated by the holding hand determination unit 131 will be described. FIG. 2 is a diagram for explaining a reference axis that defines the direction detected by the sensor unit 105, and FIG. 3 is a diagram for explaining the movement of the portable terminal 100 for determining the user's hand (right hand in this figure). (1). FIG. 4 is a diagram (2) for explaining the movement of the portable terminal 100 for determining the handle of the user (the left hand in this figure).
　図２を参照して、センサ部１０５により検出される方向を定義する軸と回転角について説明する。図２に示すように、センサ部１０５の中心（携帯端末１００の筐体１５０の中心）を中心として、表示部１０１を備える表示面１２１と垂直な方向をＺ軸方向として、互いに直交する３軸Ｘ、Ｙ、Ｚ軸で構成される直交座標系を設定する。各軸周りの回転角について、Ｚ軸周りの回転角をヨー角、Ｙ軸周りの回転角をロール角、Ｘ軸周りの回転角をピッチ角とする。つまり、センサ部１０５が検出する携帯端末１００の所定の向きの回転角とは、各軸周りの回転角及びその回転角の方向で規定することができる。 With reference to FIG. 2, an axis and a rotation angle which define the direction detected by the sensor unit 105 will be described. As shown in FIG. 2, with the center of the sensor unit 105 (the center of the casing 150 of the portable terminal 100) as a center, the three axes orthogonal to each other with the direction perpendicular to the display surface 121 including the display unit 101 as the Z-axis direction. Set up an orthogonal coordinate system composed of X, Y and Z axes. Regarding the rotation angle around each axis, let the rotation angle around Z axis be the yaw angle, the rotation angle around Y axis be the roll angle, and the rotation angle around X axis be the pitch angle. That is, the rotation angle in the predetermined direction of the portable terminal 100 detected by the sensor unit 105 can be defined by the rotation angle around each axis and the direction of the rotation angle.
　さらに、各軸周りの回転角の方向について規定する。まず、ピッチ角について、Ｘ軸を中心にＸ軸プラス方向を正面に見て時計回りを「ピッチ角プラス方向」とし、Ｘ軸を中心にＸ軸プラス方向を正面に見て反時計回りを「ピッチ角マイナス方向」とする。ロール角について、Ｙ軸を中心にＹ軸プラス方向を正面に見て時計回りを「ロール角プラス方向」とし、Ｙ軸を中心にＹ軸プラス方向を正面に見て反時計回りを「ロール角マイナス方向」とする。ヨー角について、Ｚ軸を中心にＺ軸プラス方向を正面に見て時計回りを「ヨー角プラス方向」とし、Ｚ軸を中心にＺ軸プラス方向を正面に見て反時計回りを「ヨー角マイナス方向」とする。 Furthermore, the direction of the rotation angle around each axis is specified. First, regarding the pitch angle, when the X axis plus direction is viewed from the X axis in the front, the clockwise direction is "pitch angle plus direction", and the X axis is viewed counterclockwise as the X axis plus direction is viewed in the front The pitch angle is in the negative direction. Regarding the roll angle, with the Y axis positive direction centered on the Y axis, the clockwise direction is "roll angle plus direction", and the Y axis positive direction with the Y axis plus direction counterclockwise, "roll angle In the negative direction. Regarding the yaw angle, the Z axis plus direction is viewed in front about the Z axis, clockwise as "Yaw angle plus direction", and the Z axis plus direction viewed in the Z axis plus direction, counterclockwise as "Yaw angle In the negative direction.
［携帯端末１００の動き１］
　図３は、ユーザの持ち手（本図では右手）を判定するための携帯端末１００の動きを説明する図（１）である。図３に示すＹ１軸は上述したＹ軸に平行な軸である。Ｙ軸に平行であるため、上述した直交座標系を平行移動した座標系を想定すれば、同様の軸周りの回転角で、携帯端末１００の所定の向きの回転角を規定できる。また、図３中、回転前の重力方向はＺ軸マイナス方向である。図３の左上に、回転角の基準軸を示す。なお、図３に示すＹ１軸は携帯端末１００の前後方向の軸である。 [Movement 1 of Mobile Terminal 100]
FIG. 3 is a diagram (1) for explaining the movement of the portable terminal 100 for determining the user's hand (the right hand in this figure). The Y1 axis shown in FIG. 3 is an axis parallel to the above-mentioned Y axis. Since it is parallel to the Y axis, assuming a coordinate system in which the above-mentioned orthogonal coordinate system is translated, the rotation angle in a predetermined direction of the portable terminal 100 can be defined by the rotation angle around the same axis. Moreover, in FIG. 3, the gravity direction before rotation is the Z-axis minus direction. The reference axis of the rotation angle is shown at the upper left of FIG. The Y1 axis shown in FIG. 3 is an axis in the front-rear direction of the portable terminal 100.
　図３に示す携帯端末１００の状態１では、ユーザがＺ軸プラス方向から表示面１２１を見ている状態である。そして、ユーザがＺ軸プラス方向から表示面１２１を見ている状態から、右手で「ロール角マイナス方向」に携帯端末１００を９０度回転する（図中、矢印Ｐ）。言い換えると、携帯端末１００の筐体１５０の中央よりも右側面１２３側にある回転軸Ｙ１を中心とした「ロール角マイナス方向」は、携帯端末１００の筐体１５０の左側面１２５が表示面１２１側から背面１２７側に向う方向である。つまり、携帯端末１００の状態は、状態１から「ロール角マイナス方向」に９０度回転した状態２へ遷移する。 In state 1 of the portable terminal 100 shown in FIG. 3, the user is looking at the display surface 121 from the Z-axis plus direction. Then, from the state where the user is looking at the display surface 121 from the Z-axis plus direction, the portable terminal 100 is rotated 90 degrees in the “roll angle minus direction” with the right hand (arrow P in the figure). In other words, in the “roll angle negative direction” centered on the rotation axis Y1 located on the right side surface 123 side of the center of the housing 150 of the portable terminal 100, the left side surface 125 of the housing 150 of the portable terminal 100 is the display surface 121 It is a direction from the side toward the back surface 127 side. That is, the state of the portable terminal 100 transitions from the state 1 to the state 2 rotated 90 degrees in the “roll angle minus direction”.
　図４は、ユーザの持ち手（本図では左手）を判定するための携帯端末１００の動きを説明する図（２）である。図３と共通する要素には同じ符号を付し、その詳細な説明を省略する。図４中、重力方向はＺ軸マイナス方向であるとする。図４の左上に、回転角の基準軸を示す。なお、図４に示すＹ１軸は携帯端末１００の前後方向の軸である。 FIG. 4 is a diagram (2) for explaining the movement of the portable terminal 100 for determining the user's hand (the left hand in this figure). Elements in common with FIG. 3 are given the same reference numerals, and detailed descriptions thereof will be omitted. In FIG. 4, the gravity direction is assumed to be the Z axis negative direction. The reference axis of the rotation angle is shown at the upper left of FIG. The Y1 axis shown in FIG. 4 is an axis in the front-rear direction of the portable terminal 100.
　図４に示す携帯端末１００の状態１では、ユーザがＺ軸プラス方向から表示面１２１を見ている状態である。そして、ユーザがＺ軸プラス方向から表示面１２１を見ている状態から、左手で「ロール角プラス方向」に携帯端末１００を９０度回転する（図中、矢印Ｐ１）。言い換えると、携帯端末１００の筐体１５０の中央よりも左側面１２５側にある回転軸Ｙ１を中心とした「ロール角プラス方向」は、携帯端末１００の筐体１５０の右側面１２３が表示面１２１側から背面１２７側に向う方向である。つまり、携帯端末１００の状態は、状態１から「ロール角プラス方向」に９０度回転した状態４へ遷移する。 In state 1 of the mobile terminal 100 shown in FIG. 4, the user is looking at the display surface 121 from the Z-axis plus direction. Then, from the state where the user is looking at the display surface 121 from the Z-axis plus direction, the portable terminal 100 is rotated 90 degrees in the “roll angle plus direction” with the left hand (arrow P1 in the figure). In other words, in the “roll angle plus direction” centered on the rotation axis Y1 located on the left side 125 side of the center of the case 150 of the portable terminal 100, the right side face 123 of the case 150 of the portable terminal 100 is the display surface 121 It is a direction from the side toward the back surface 127 side. That is, the state of the portable terminal 100 transitions from the state 1 to the state 4 rotated 90 degrees in the “roll angle plus direction”.
　携帯端末１００の状態が状態１から、状態２（図３参照）又は状態４（図４参照）へ遷移するとき、センサ部１０５は、（１）Ｚ軸マイナス方向への加速度の変化、及び（２）携帯端末１００から見た重力方向の変化を検出し、これらの検出結果を検出値として持ち手判定部１３１へ出力する。 When the state of the portable terminal 100 transitions from the state 1 to the state 2 (see FIG. 3) or the state 4 (see FIG. 4), the sensor unit 105 changes (1) the change in acceleration in the Z-axis negative direction, 2) A change in the direction of gravity as viewed from the portable terminal 100 is detected, and the detection results are output to the hand determining unit 131 as detection values.
　そして、持ち手判定部１３１は、持ち手判定部１３１で算出された携帯端末１００の所定の向きの回転角が、持ち手判定部１３１が保持する「携帯端末１００の所定の向きの回転角の判定基準（以下、「回転角の判定基準」という）に基づき、「ロール角マイナス方向」に９０度回転した場合の回転角の判定基準と同じであり、かつ、センサ部１０５の検出値に基づきセンサ部１０５がＺ軸マイナス方向への加速度の変化を検出していると判定する場合、持ち手判定部１３１は、ユーザの持ち手が右手であると判定する。 Then, the holding hand determination unit 131 determines that the rotation angle in the predetermined direction of the portable terminal 100 calculated by the holding hand determination unit 131 is “the rotation angle in the predetermined direction of the portable terminal 100 held by the holding hand determination unit 131 It is the same as the determination criterion of the rotation angle when rotated 90 degrees in the “roll angle minus direction” based on the determination criterion (hereinafter referred to as “the determination criterion of the rotation angle”), and based on the detection value of the sensor unit 105 When it is determined that the sensor unit 105 detects a change in acceleration in the Z-axis negative direction, the holding hand determination unit 131 determines that the user's hand is the right hand.
　また、持ち手判定部１３１は、持ち手判定部１３１で算出された携帯端末１００の所定の向きの回転角が、持ち手判定部１３１が保持する「携帯端末１００の所定の向きの回転角の判定基準（以下、「回転角の判定基準」という）に基づき、「ロール角プラス方向」に９０度回転した場合の回転角の判定基準と同じであり、かつ、センサ部１０５の検出値に基づきセンサ部１０５がＺ軸マイナス方向への加速度の変化を検出していると判定する場合、持ち手判定部１３１は、ユーザの持ち手が左手であると判定する。なお、持ち手判定部１３１は、あらかじめ各軸回りの回転角に基づく回転角の判定基準をデータとして図示しない記憶素子に保持している。 Further, the holding hand determination unit 131 is configured such that the rotation angle in the predetermined direction of the portable terminal 100 calculated by the holding hand determination unit 131 is “the rotation angle in the predetermined direction of the portable terminal 100 held by the holding hand determination unit 131 It is the same as the determination criterion of the rotation angle when rotated 90 degrees in the “roll angle plus direction” based on the determination criterion (hereinafter referred to as “determination criterion of the rotation angle”), and based on the detection value of the sensor unit 105 When it is determined that the sensor unit 105 detects a change in acceleration in the Z-axis negative direction, the holding hand determination unit 131 determines that the user's hand is the left hand. In addition, the holding hand determination unit 131 holds the determination reference of the rotation angle based on the rotation angle around each axis in advance in a storage element (not shown) as data.
　持ち手判定部１３１は、ユーザの持ち手の判定結果を、制御部１０７へ出力する。 The holding hand determination unit 131 outputs the determination result of the user's hand to the control unit 107.
　制御部１０７は、持ち手判定部１３１から入力されたユーザの持ち手の判定結果と、現在保持するユーザの持ち手の情報とを比較する。制御部１０７は、現在のユーザの持ち手の情報が持ち手判定部１３１から入力されたユーザの持ち手の判定結果と異なる場合、現在保持しているユーザの持ち手の情報を、ユーザの持ち手の判定結果に基づき更新する。なお、制御部１０７は、現在保持しているユーザの持ち手の情報が持ち手判定部１３１から入力されたユーザの持ち手の判定結果と同じである場合、現在保持しているユーザの持ち手の情報を更新しない。 The control unit 107 compares the determination result of the user's hand, which is input from the handle determination unit 131, with the information of the user's currently held hand. When the information on the current user's hand is different from the determination result of the user's hand input from the hand determination unit 131, the control unit 107 determines that the user's information on the current user's hand is held. Update based on the hand judgment result. When the information on the user's hand currently held is the same as the determination result of the user's hand input from the hand holding determination unit 131, the control unit 107 holds the user's current hand. Do not update the information of
　また、制御部１０７は、保持する現在のユーザの持ち手の情報に基づき、表示部１０１の表示画面の方向、位置、及び大きさを変更するよう表示部１０１を制御する。また、制御部１０７は、操作部１０３からの入力に基づき、表示部１０１に表示された各種機能を制御する。 Further, the control unit 107 controls the display unit 101 to change the direction, position, and size of the display screen of the display unit 101 based on the information of the current user's hand held. The control unit 107 also controls various functions displayed on the display unit 101 based on the input from the operation unit 103.
　状態管理部１０９は、携帯端末１００のユーザの持ち手の情報を、現在の携帯端末の状態を示す情報として管理する。携帯端末１００の所定の向きの回転角を示す情報は、持ち手が右手と判定された場合、「ロール角マイナス方向」に９０度回転であり、持ち手が左手と判定された場合、「ロール角プラス方向」に９０度回転である。 The state management unit 109 manages information on the hand of the user of the mobile terminal 100 as information indicating the current state of the mobile terminal. The information indicating the rotation angle in the predetermined direction of the portable terminal 100 is 90 degrees rotation in the “roll angle minus direction” when the holding hand is determined to be the right hand, and “rolling when the holding hand is determined to be the left hand It is a 90 degree rotation in the angle plus direction.
　次に、図５を参照して、本実施の形態に係る携帯端末１００における表示部１０１の切り替え制御について説明する。図５は、表示部１０１の切り替え制御フローである。 Next, switching control of the display unit 101 in the portable terminal 100 according to the present embodiment will be described with reference to FIG. FIG. 5 is a switching control flow of the display unit 101.
　ステップＳＴ４０１では、センサ部１０５が、（１）Ｚ軸マイナス方向への加速度、及び（２）携帯端末から見た重力方向の変化を、センサ部１０５の検出値として検出する。そして、ステップＳＴ４０３へ遷移する。 In step ST401, the sensor unit 105 detects (1) the acceleration in the negative direction of the Z-axis and (2) the change in the gravity direction as viewed from the portable terminal as a detection value of the sensor unit 105. Then, the process transitions to step ST403.
　ステップＳＴ４０３では、持ち手判定部１３１が、センサ部１０５の検出値の時間変化から、所定の向きの回転角（ｘ軸周りの回転角（ピッチ角）、ｙ軸周りの回転角（ロール角）、ｚ軸周りの回転角（ヨー角））を算出する。そして、算出した所定の向きの回転角からユーザの持ち手を判定する。そして、分岐ＳＴ４０５へ遷移する。 In step ST403, the holding hand determination unit 131 determines a rotation angle in a predetermined direction (rotation angle around the x axis (pitch angle), rotation angle around the y axis (roll angle) from time change of the detection value of the sensor unit 105). And the rotation angle (yaw angle) about the z axis. Then, the user's hand is determined from the calculated rotation angle in the predetermined direction. Then, the process transitions to branch ST405.
　分岐ＳＴ４０５では、持ち手判定部１３１が、ユーザの持ち手が右手であるかどうかを判定する。ユーザの持ち手が右手であると判定する場合（Ｙｅｓの場合）、ステップＳＴ４０７へ遷移し、そうでない場合（Ｎｏの場合）、分岐ＳＴ４０９へ遷移する。 In branch ST405, the holding hand determination unit 131 determines whether the user's holding hand is the right hand. If it is determined that the user's hand is the right hand (in the case of Yes), the process transitions to step ST407, and if not (in the case of No), the process transitions to branch ST409.
　ステップＳＴ４０７では、持ち手判定部１３１は、ユーザの持ち手の判定結果（右手）を制御部１０７へ出力する。そして、分岐ＳＴ４１１へ遷移する。 In step ST407, the holding hand determination unit 131 outputs the determination result (right hand) of the user's hand to the control unit 107. Then, the process transitions to branch ST411.
　分岐ＳＴ４１１では、制御部１０７が、ユーザの持ち手の判定結果（右手）を、状態管理部１０９が保持しているユーザの持ち手を示す情報と比較し、異なるかどうかを判定する。異なる場合（Ｙｅｓの場合）、ステップＳＴ４１５へ遷移し、同一の場合（Ｎｏの場合）はステップＳＴ４０１へ戻る。 In branch ST411, the control unit 107 compares the determination result (right hand) of the user's hand with the information indicating the user's hand held by the state management unit 109, and determines whether they are different. If they are different (in the case of Yes), the process proceeds to step ST415. If they are the same (in the case of No), the process returns to step ST401.
　ステップＳＴ４１５では、制御部１０７が、状態管理部１０９が保持しているユーザの持ち手を示す情報（左手）を、ユーザの持ち手の判定結果に基づき更新し、表示部１０１を右手用の表示画面に切り替える。 In step ST 415, control unit 107 updates information (left hand) indicating the user's hand held by state management unit 109 based on the determination result of the user's hand, and displays display unit 101 for the right hand. Switch to the screen.
　分岐ＳＴ４０９では、持ち手判定部１３１が、ユーザの持ち手が左手であるかどうかを判定する。ユーザの持ち手が左手であると判定する場合（Ｙｅｓの場合）、ステップＳＴ４１３へ遷移し、そうでない場合（Ｎｏの場合）、ステップＳＴ４０１へ戻る。 In branch ST409, the holding hand determination unit 131 determines whether the user's holding hand is the left hand. If it is determined that the user's hand is the left hand (in the case of Yes), the process proceeds to step ST413. If not (in the case of No), the process returns to step ST401.
　ステップＳＴ４１３では、持ち手判定部１３１は、ユーザの持ち手の判定結果（左手）を制御部１０７へ出力する。そして、分岐ＳＴ４１７へ遷移する。 In step ST413, the holding hand determination unit 131 outputs the determination result (left hand) of the user's holding hand to the control unit 107. Then, the process transitions to branch ST417.
　分岐ＳＴ４１７では、制御部１０７が、ユーザの持ち手の判定結果（左手）を、状態管理部１０９が保持しているユーザの持ち手を示す情報と比較し、異なるかどうかを判定する。異なる場合（Ｙｅｓの場合）、ステップＳＴ４１９へ遷移し、同一の場合（Ｎｏの場合）はステップＳＴ４０１へ戻る。 In branch ST417, the control unit 107 compares the determination result (left hand) of the user's hand with the information indicating the user's hand held by the state management unit 109, and determines whether they are different. When they are different (in the case of Yes), the process transitions to step ST419, and in the case of the same (in the case of No), the process returns to step ST401.
　ステップＳＴ４１９では、制御部１０７が、状態管理部１０９が保持しているユーザの持ち手を示す情報を、ユーザの持ち手の判定結果に基づき更新し、表示部１０１を左手用の表示画面に切り替える。 In step ST419, control unit 107 updates the information indicating the user's hand held by state management unit 109 based on the determination result of the user's hand, and switches display unit 101 to the display screen for the left hand. .
　本実施の形態に係る携帯端末１００は、センサ部１０５により検出される（１）Ｚ軸マイナス方向への加速度、及び（２）携帯端末から見た重力方向の変化の時間変化から、自端末の所定の向きの回転角を算出することにより、ユーザの持ち手（本実施の形態では片手を想定）を判定することができる。そのため、本実施の形態に係る携帯端末１００は、表示部１０１の表示をユーザの持ち手に応じて適用的に切り替えることができる。したがって、本実施の形態に係る携帯端末１００は、表示部１０１を介して、ユーザの持ち手に合わせて、ユーザにとって使い勝手の良い表示を行うことができる。 The portable terminal 100 according to the present embodiment is determined based on (1) acceleration in the negative Z-axis direction detected by the sensor unit 105 and (2) temporal change in the direction of gravity seen from the portable terminal. By calculating the rotation angle in the predetermined direction, it is possible to determine the user's hand (assuming one hand in the present embodiment). Therefore, portable terminal 100 according to the present embodiment can switch the display of display unit 101 according to the user's hand. Therefore, portable terminal 100 according to the present embodiment can perform convenient display for the user through the display unit 101 in accordance with the user's hand.
　さらに、本実施の形態に係る携帯端末１００では、３軸加速度センサを筐体１５０内に備えている。そのため、検出の際、通常想定される利用状態として、ユーザの右手又は左手の掌が携帯端末１００の背面に向き、かつユーザがＺ軸プラス方向から表示面１２１を見ている状態では、ユーザが携帯端末１００のどの部分に指を置いて携帯端末１００を把持しても制約を受けない。なお、センサ部１０５は対向する側面の中央付近に位置することが望ましい。 Furthermore, in the mobile terminal 100 according to the present embodiment, the three-axis acceleration sensor is provided in the housing 150. Therefore, at the time of detection, it is assumed that the palm of the user's right or left hand is facing the back of the portable terminal 100 and the user is looking at the display surface 121 from the Z-axis plus direction. There is no restriction on holding the portable terminal 100 by placing a finger on any part of the portable terminal 100. It is desirable that the sensor unit 105 be located near the center of the opposite side surface.
　さらに、本実施の形態に係る携帯端末１００では、通常想定される利用状態として、ユーザの右手の掌が携帯端末１００の背面に向き、かつユーザがＺ軸プラス方向から表示面１２１を見ている状態から「ロール角マイナス方向」に携帯端末１００を９０度回転させた場合、持ち手が右手と判定される。しかしながら、通常想定される利用状態では、左手が持ち手である場合には、ユーザがＺ軸プラス方向から表示面１２１を見ている状態から「ロール角マイナス方向」に携帯端末１００を９０度回転させることはできない。つまり、通常想定される利用状態では、左手の可動域の範囲外である。したがって、本実施の形態に係る携帯端末１００では、通常想定される利用状態において、ユーザがＺ軸プラス方向から表示面１２１を見ている状態から「ロール角マイナス方向」に携帯端末１００を９０度回転させた場合、持ち手の誤判定を確実に防止することができる。 Furthermore, in portable terminal 100 according to the present embodiment, the palm of the user's right hand is facing the back of portable terminal 100, and the user is looking at display surface 121 from the Z-axis positive direction, as a normally assumed use state. When the portable terminal 100 is rotated 90 degrees in the “roll angle negative direction” from the state, the holding hand is determined to be the right hand. However, in the normally assumed use state, when the left hand is the holding hand, the portable terminal 100 is rotated 90 degrees in the “roll angle minus direction” from the state where the user is looking at the display surface 121 from the Z axis plus direction. I can not let it go. That is, in the normally assumed use state, it is out of the range of the movable range of the left hand. Therefore, in portable terminal 100 according to the present embodiment, in the normally assumed use state, portable terminal 100 is 90 degrees in the “roll angle negative direction” from the state where the user is looking at display surface 121 from the Z axis positive direction. In the case of rotation, it is possible to reliably prevent an erroneous determination of the holding hand.
　同様に、通常想定される利用状態として、ユーザの左手の掌が携帯端末１００の背面に向き、かつユーザがＺ軸プラス方向から表示面１２１を見ている状態から「ロール角プラス方向」に携帯端末１００を９０度回転させた場合、持ち手が左手と判定される。しかしながら、通常想定される利用状態では、右手が持ち手である場合には、ユーザがＺ軸プラス方向から表示面１２１を見ている状態から「ロール角プラス方向」に携帯端末１００を９０度回転させることはできない。つまり、通常想定される利用状態では、右手の可動域の範囲外である。したがって、本実施の形態に係る携帯端末１００では、通常想定される利用状態において、ユーザがＺ軸プラス方向から表示面１２１を見ている状態から「ロール角プラス方向」に携帯端末１００を９０度回転させた場合、持ち手の誤判定を確実に防止することができる。 Similarly, as a normally assumed use state, the palm of the left hand of the user is facing the back of the portable terminal 100, and the user is looking at the display surface 121 from the Z-axis plus direction. When the terminal 100 is rotated 90 degrees, the handle is determined to be the left hand. However, in the normally assumed use state, when the right hand is the holding hand, the portable terminal 100 is rotated 90 degrees in the “roll angle plus direction” from the state where the user is looking at the display surface 121 from the Z axis plus direction. I can not let it go. That is, in the normally assumed use state, it is out of the range of the movable range of the right hand. Therefore, in portable terminal 100 according to the present embodiment, in a normally assumed use state, portable terminal 100 is 90 degrees in the “roll angle plus direction” from the state where the user is looking at display surface 121 from the Z axis plus direction. In the case of rotation, it is possible to reliably prevent an erroneous determination of the holding hand.
　なお、本実施の形態に係る携帯端末１００は、「ロール角マイナス方向」に９０度である場合、ユーザの持ち手を右手であると判定するが、これに限らない。例えば、誤判定を防止するために、本実施の形態に係る携帯端末１００は、「ロール角マイナス方向」の回転角を９０度よりも大きい回転角又は９０度以上の回転角の時に、ユーザの持ち手を右手であると判定しても良い。同様に、誤判定を防止するために、本実施の形態に係る携帯端末１００は、「ロール角プラス方向」の回転角を９０度よりも大きい回転角又は９０度以上の回転角の時に、ユーザの持ち手を左手であると判定しても良い。さらに、９０度よりも大きい回転角または９０度以上の回転角とする代わりに、所定角度よりも大きい回転角又は所定角度以上の回転角としてもよい。 When the portable terminal 100 according to the present embodiment is 90 degrees in the “roll angle minus direction”, it is determined that the user's hand is the right hand, but the present invention is not limited thereto. For example, in order to prevent an erroneous determination, the portable terminal 100 according to the present embodiment can set the rotation angle in the “roll angle minus direction” to a rotation angle larger than 90 degrees or 90 degrees or more. It may be determined that the hand is the right hand. Similarly, in order to prevent an erroneous determination, the portable terminal 100 according to the present embodiment is a user when the rotation angle of the “roll angle plus direction” is a rotation angle larger than 90 degrees or a rotation angle of 90 degrees or more. It may be determined that the holding hand of the is the left hand. Furthermore, instead of using a rotation angle larger than 90 degrees or a rotation angle larger than 90 degrees, a rotation angle larger than a predetermined angle or a rotation angle larger than a predetermined angle may be used.
［携帯端末１００の動き２］
　なお、図３の矢印Ｔで示すように、（３）携帯端末１００が状態２から再び状態１へ戻る、つまり、携帯端末１００が「ロール角マイナス方向」に９０度回転した後に、「ロール角プラス方向」に９０度回転した場合に、持ち手判定部１３１は、ユーザの持ち手が右手であると判定しても良い。同様に、図４の矢印Ｔ１で示すように、携帯端末１００が状態４から再び状態１へ戻る、つまり、携帯端末１００が「ロール角プラス方向」に９０度回転した後に、「ロール角マイナス方向」に９０度回転した場合に、持ち手判定部１３１は、ユーザの持ち手が左手であると判定しても良い。このように判定することで、（Ａ）初期状態（本実施の形態の場合、状態１）により、ユーザの意図に反する持ち手判定がなされてしまう場合、（Ｂ）ユーザが手に持っていない状態で意図せず持ち手モードが切り替わってしまうような場合などの誤判定を防止することができる。例えば、右手の場合、表示面１２１を下向きにして置いてある携帯端末１００を左手で持って、表示面１２１をユーザ自身に向ける動作による誤判定、携帯端末１００がユーザの所持する鞄の中で動いて「ロール角マイナス方向」に９０度回転したと誤判定される場合などが考えられる。 [Movement 2 of Mobile Terminal 100]
As indicated by an arrow T in FIG. 3, (3) the portable terminal 100 returns from the state 2 back to the state 1, that is, after the portable terminal 100 rotates 90 degrees in the “roll angle minus direction” When rotated by 90 degrees in the plus direction, the holding hand determination unit 131 may determine that the user's hand is the right hand. Similarly, as indicated by an arrow T1 in FIG. 4, the portable terminal 100 returns from the state 4 back to the state 1, that is, after the portable terminal 100 rotates 90 degrees in the "roll angle plus direction", the "roll angle minus direction When rotating by 90 degrees, the holding hand determination unit 131 may determine that the user's hand is the left hand. In this way, if (A) the initial state (in the case of the present embodiment, the state 1) determines that the holding hand is against the user's intention, (B) the user does not hold the hand. It is possible to prevent an erroneous determination such as when the hand mode is switched unintentionally in a state. For example, in the case of the right hand, the mobile terminal 100 placed with the display surface 121 facing downward is held by the left hand and erroneous determination is made by the operation of pointing the display surface 121 to the user himself. The case where it is judged that it moves and it is misjudged that it rotated 90 degree | times in the "roll angle minus direction" etc. can be considered.
　なお、本実施の形態では、図３を参照して説明したように、携帯端末１００の状態１では、重力方向がＺ軸マイナス方向の状態を携帯端末１００の初期状態として説明したが、これに限らない。図６は、携帯端末１００の初期状態を説明するための図である。例えば、図６に示すように、状態３として、「ロール角マイナス方向」に角度αだけ回転した状態が初期状態であっても、本実施の形態を適用することができる。つまり、携帯端末１００は、図３に示す状態１から角度αだけ回転した図６に示す状態３から、ユーザが右手で「ロール角マイナス方向」に携帯端末１００を９０度回転させることで（図中、矢印Ｓ）、「ロール角マイナス方向」に９０度回転した状態５へ遷移する場合、本実施の形態に係る携帯端末１００は、ユーザの持ち手を右手であると判定することができる。 In the present embodiment, as described with reference to FIG. 3, in the state 1 of the portable terminal 100, the state in which the gravity direction is the Z axis minus direction is described as the initial state of the portable terminal 100. Not exclusively. FIG. 6 is a diagram for explaining an initial state of the mobile terminal 100. As shown in FIG. For example, as shown in FIG. 6, the present embodiment can be applied even if the state where only the angle α is rotated in the “roll angle minus direction” is the initial state as the state 3. That is, from the state 3 shown in FIG. 6 rotated from the state 1 shown in FIG. 3 by the angle α, the user rotates the mobile terminal 100 90 degrees in the “roll angle minus direction” with the right hand (see FIG. When transitioning to a state 5 in which the arrow S) and the “roll angle minus direction” are rotated 90 degrees, the mobile terminal 100 according to the present embodiment can determine that the user's hand is the right hand.
　なお、本実施の形態では、センサ部１０５には、重力加速度を検出できる３軸加速度センサが１つ内蔵されているとして説明したが、これに限らない。加速度センサの種類や配置によって、複数個内蔵しても良い。 In the present embodiment, it is described that one 3-axis acceleration sensor capable of detecting the gravitational acceleration is built in the sensor unit 105, but the present invention is not limited to this. A plurality of acceleration sensors may be incorporated depending on the type and arrangement of the acceleration sensors.
（実施の形態２）
　ここで、センサ部１０５の位置は、携帯端末１００の表示面１２１と垂直な面（側面）のうち、対抗する面を結ぶ直線の中心である必要はない。しかしながら、例えば、センサ部１０５が携帯端末１００の側面付近に位置する場合、検出されるＺ軸マイナス方向への加速度の値が小さく、殆ど検出されない可能性が考えられる。また、重力加速度の向きが図２又は図３に示すＹ軸と完全に平行である場合、若しくは無重力である場合、センサ部１０５で検出できない可能性がある。 Second Embodiment
Here, the position of the sensor unit 105 does not have to be the center of a straight line connecting opposing surfaces of the surfaces (side surfaces) perpendicular to the display surface 121 of the portable terminal 100. However, for example, when the sensor unit 105 is located in the vicinity of the side surface of the portable terminal 100, there is a possibility that the value of acceleration detected in the negative direction of the Z axis is small and hardly detected. Also, when the direction of gravitational acceleration is completely parallel to the Y axis shown in FIG. 2 or FIG. 3, or when it is weightless, there is a possibility that the sensor unit 105 can not detect it.
　そこで、実施の形態２に係る携帯端末３００では、センサ部１０５の構成に代えて、加速度を検出できる２つの３軸加速度センサ３０５Ａ、３０５Ｂで構成されるセンサ部３０５を、携帯端末３００の表示面３２１と垂直な面（側面）のうち、対抗する面の近傍にそれぞれ１つずつ配置する（図８参照）。 Therefore, in the mobile terminal 300 according to the second embodiment, the sensor section 305 configured of two three- axis acceleration sensors 305A and 305B capable of detecting an acceleration instead of the configuration of the sensor section 105 is a display surface of the mobile terminal 300. Of the faces (side faces) perpendicular to 321, one each is disposed in the vicinity of the opposing face (see FIG. 8).
　図７は、実施の形態２に係る携帯端末３００の構成を示すブロック図である。図７に示すように、実施の形態２に係る携帯端末３００は、携帯端末３００の各種機能を表示する表示部１０１と、表示部１０１に表示された各種機能をユーザが操作するための操作部１０３と、携帯端末３００の筐体３５０内部に設けられ、加速度を検出できる２つの３軸加速度センサ３０５Ａ、３０５Ｂで構成されるセンサ部３０５と、表示部１０１の表示や携帯端末３００の各種機能を制御する制御部３０７と、状態管理部３０９と、持ち手判定部３３１と、を備える。 FIG. 7 is a block diagram showing a configuration of mobile terminal 300 according to the second embodiment. As shown in FIG. 7, the portable terminal 300 according to the second embodiment includes a display unit 101 that displays various functions of the portable terminal 300 and an operation unit that allows the user to operate various functions displayed on the display unit 101. 103, a sensor unit 305 provided inside the housing 350 of the portable terminal 300 and configured of two three- axis acceleration sensors 305A and 305B capable of detecting acceleration, display of the display unit 101, and various functions of the portable terminal 300 A control unit 307 that controls, a state management unit 309, and a handle determination unit 331 are provided.
　表示部１０１は、携帯端末３００の各種機能を表示する。また、表示部１０１は、後述する制御部３０７の制御に基づき、表示画面の方向、位置、及び大きさが、ユーザの持ち手に応じて適宜変わるよう構成されている。 The display unit 101 displays various functions of the mobile terminal 300. In addition, the display unit 101 is configured to appropriately change the direction, the position, and the size of the display screen according to the user's hand under the control of the control unit 307 described later.
　センサ部３０５は、加速度を検出できる２つの３軸加速度センサ３０５Ａ、３０５Ｂで構成される。３軸加速度センサ３０５Ａ、３０５Ｂであるが、本実施の形態では、Ｚ軸方向のみの加速度変化を判定に利用する。２つの３軸加速度センサ３０５Ａ、３０５Ｂは、携帯端末３００の表示面３２１と垂直な面（側面）のうち、対抗する２つの面３２３、３２５の近傍にそれぞれ配置される。３軸加速度センサ３０５Ａは、携帯端末３００の筐体３５０の左側面３２５近傍に配置され、３軸加速度センサ３０５Ｂは、携帯端末３００の筐体３５０の右側面３２３近傍に配置される。 The sensor unit 305 includes two three- axis acceleration sensors 305A and 305B capable of detecting an acceleration. Although the triaxial acceleration sensors 305A and 305B are used, in the present embodiment, changes in acceleration only in the Z-axis direction are used for determination. The two three- axis acceleration sensors 305A and 305B are respectively disposed in the vicinity of the two opposing surfaces 323 and 325 of the surfaces (side surfaces) perpendicular to the display surface 321 of the portable terminal 300. The 3-axis acceleration sensor 305A is disposed in the vicinity of the left side surface 325 of the housing 350 of the portable terminal 300, and the 3-axis acceleration sensor 305B is disposed in the vicinity of the right side surface 323 of the housing 350 of the portable terminal 300.
　センサ部３０５を構成する２つの３軸加速度センサ３０５Ａ、３０５Ｂは、それぞれ、Ｚ軸マイナス方向の加速度を検出し、検出値として、持ち手判定部３３１へ出力する。詳細は後述するが、ユーザの持ち手が右手の場合、３軸加速度センサ３０５Ａが検出するＺ軸マイナス方向の加速度の絶対値が３軸加速度センサ３０５Ｂが検出するＺ軸マイナス方向の加速度の絶対値よりも大きな値をとる。また、ユーザの持ち手が左手の場合、３軸加速度センサ３０５Ｂが検出するＺ軸マイナス方向の加速度の絶対値が３軸加速度センサ３０５Ａが検出するＺ軸マイナス方向の加速度の絶対値よりも大きな値をとる。なお、センサ部３０５は、３軸の加速度センサで構成されなくても良い。なお、Ｚ軸マイナス方向への加速度とは、携帯端末３００の筐体３５０の表示面３２１側から背面３２７側に向かう方向への加速度と言い換えることができる。 The two three- axis acceleration sensors 305A and 305B that constitute the sensor unit 305 respectively detect the acceleration in the negative Z-axis direction, and output the detected acceleration to the holding hand determination unit 331. Although the details will be described later, when the user's handle is the right hand, the absolute value of the Z axis minus direction acceleration detected by the 3-axis acceleration sensor 305A is the absolute value of the Z axis minus direction acceleration detected by the 3-axis acceleration sensor 305B. Takes a larger value than When the user's hand is the left hand, the absolute value of the Z-axis negative direction detected by the 3-axis acceleration sensor 305B is larger than the absolute value of the Z-axis negative direction detected by the 3-axis acceleration sensor 305A. Take The sensor unit 305 may not be configured by a three-axis acceleration sensor. The acceleration in the negative Z-axis direction can be reworded as an acceleration in a direction from the display surface 321 side of the housing 350 of the portable terminal 300 toward the back surface 327 side.
　そして、持ち手判定部３３１は、３軸加速度センサ３０５Ａ、３０５Ｂがそれぞれ検出したＺ軸マイナス方向の加速度から、各３軸加速度センサの移動量及びその差に基づき、公知の方法を用いて、所定の向きの回転角を算出する。より詳細には、持ち手判定部３３１は、ｙ軸周りの回転角（ロール角）を算出する。 Then, from the acceleration in the negative Z-axis direction detected by each of the 3- axis acceleration sensors 305A and 305B, the holding hand determination unit 331 uses a known method based on the amount of movement of each 3-axis acceleration sensor and the difference thereof. Calculate the rotation angle of the direction of. More specifically, the holding hand determination unit 331 calculates a rotation angle (roll angle) around the y axis.
　ここで、「所定の向きの回転角」とは、ユーザの持ち手が右手の場合、回転軸Ｙ３が携帯端末３００の筐体３５０の中央よりも右側面３２３側にあり、携帯端末３００がユーザの持ち手により、回転軸Ｙ３を中心としてロール角マイナス方向に所定の角度分回転した際の回転角である。さらに、ユーザの持ち手が右手の場合、携帯端末３００の筐体３５０の中央よりも右側面３２３側にある回転軸Ｙ３を中心としたロール角マイナス方向は、携帯端末３００の筐体３５０の左側面３２５が表示面３２１側から背面３２７側に向う方向である（図８参照）。 Here, “rotational angle in a predetermined direction” means that, when the user's handle is the right hand, the rotation axis Y3 is on the right side 323 side of the center of the case 350 of the portable terminal 300 and the portable terminal 300 is the user The roll angle is a rotation angle when rotating by a predetermined angle in the minus roll angle direction about the rotation axis Y3. Furthermore, when the user holds the right hand, the negative roll angle direction about the rotation axis Y3 located on the right side 323 side of the center of the case 350 of the portable terminal 300 is the left side of the case 350 of the portable terminal 300 The surface 325 is a direction from the display surface 321 to the back surface 327 (see FIG. 8).
　なお、本実施の形態では、ユーザの持ち手が右手の場合について説明しているが、ユーザの持ち手が左手の場合、次のように言い換えることができる。つまり、ユーザの持ち手が左手の場合、「所定の向きの回転角」とは、回転軸Ｙ３が携帯端末３００の筐体３５０の中央よりも左側面３２５側にあり、携帯端末３００がユーザの持ち手により、回転軸Ｙ３を中心としてロール角プラス方向に所定の角度分回転した際の回転角である。さらに、ユーザの持ち手が左手の場合、携帯端末３００の筐体３５０の中央よりも左側面３２５側にある回転軸Ｙ３を中心としたロール角プラス方向は、携帯端末３００の筐体３５０の右側面３２３が表示面３２１側から背面３２７側に向う方向である。以下、本実施の形態において、「所定の向きの回転角」は、同じ意味で用いる。 In the present embodiment, the case where the user's handle is the right hand is described, but when the user's handle is the left hand, the following can be reworded. That is, when the user holds the left hand, “rotational angle in a predetermined direction” means that the rotation axis Y3 is closer to the left side 325 than the center of the case 350 of the portable terminal 300, and the portable terminal 300 is the user. It is a rotation angle when rotating by a predetermined angle in the roll angle plus direction about the rotation axis Y3 by the handle. Furthermore, when the user's handle is the left hand, the roll angle plus direction centered on the rotation axis Y3 located on the left side 325 side of the center of the case 350 of the portable terminal 300 is the right side of the case 350 of the portable terminal 300 The surface 323 is a direction from the display surface 321 side to the back surface 327 side. Hereinafter, in the present embodiment, “rotational angle in a predetermined direction” is used in the same meaning.
　本実施の形態では、加速度センサ３０５Ａ、３０５Ｂが携帯端末３００の表示面３２１と垂直な面（側面）のうち、対抗する２つの面３２３、３２５の近傍にそれぞれ配置されている。そのため、いずれか一方の加速度センサが検出するＺ軸マイナス方向への加速度の値が小さくなることが期待できる。 In the present embodiment, the acceleration sensors 305A and 305B are respectively disposed in the vicinity of two opposing surfaces 323 and 325 in the surface (side surface) perpendicular to the display surface 321 of the portable terminal 300. Therefore, it can be expected that the value of the acceleration in the negative Z-axis direction detected by any one of the acceleration sensors becomes small.
　また、本実施の形態では、持ち手が左手の場合であっても、本実施の形態に係る携帯端末３００は、携帯端末３００の所定の向きの回転角として、「ロール角プラス方向」に９０度を検出することができる。 Further, in the present embodiment, even when the holding hand is the left hand, the portable terminal 300 according to the present embodiment is 90 in the “roll angle plus direction” as the rotation angle of the portable terminal 300 in the predetermined direction. The degree can be detected.
　ここで、図８、図９を参照して、センサ部３０５により検出される加速度のｘ、ｙ、ｚ成分などについて説明する。図８は、ユーザの持ち手（本図では右手）を判定するための携帯端末３００の動きを説明する図（１）である。図９は、ユーザの持ち手（本図では左手）を判定するための携帯端末３００の動きを説明する図（２）である。 Here, the x, y, z components of the acceleration detected by the sensor unit 305 will be described with reference to FIGS. 8 and 9. FIG. 8 is a diagram (1) for explaining the movement of the portable terminal 300 for determining the user's hand (the right hand in this figure). FIG. 9 is a diagram (2) for explaining the movement of the portable terminal 300 for determining the user's hand (the left hand in this figure).
　なお、図８、図９では、センサ部３０５により検出される方向を定義する軸と回転角については、図２と同様である。つまり、各３軸加速度センサ３０５Ａ、３０５Ｂの中心を中心として、表示部１０１を備える表示面３２１と垂直な方向をＺ軸方向として、互いに直交する３軸Ｘ、Ｙ、Ｚ軸で構成される直交座標系を設定する。各軸周りの回転角について、Ｚ軸周りの回転角をヨー角、Ｙ軸周りの回転角をロール角、Ｘ軸周りの回転角をピッチ角とする。センサ部３０５が検出する携帯端末３００の所定方向への移動量とは、各軸周りの回転角及びその回転角の方向で規定することができる。 In FIGS. 8 and 9, the axis defining the direction detected by the sensor unit 305 and the rotation angle are the same as in FIG. In other words, orthogonal to each other with three axes X, Y, and Z orthogonal to each other, with the direction perpendicular to the display surface 321 including the display unit 101 as the Z axis direction with the centers of the three axis acceleration sensors 305A and 305B as centers. Set coordinate system. Regarding the rotation angle around each axis, let the rotation angle around Z axis be the yaw angle, the rotation angle around Y axis be the roll angle, and the rotation angle around X axis be the pitch angle. The movement amount of the mobile terminal 300 in the predetermined direction detected by the sensor unit 305 can be defined by the rotation angle around each axis and the direction of the rotation angle.
　また、図８に示すＹ３軸は上述したＹ軸に平行な軸である。Ｙ軸に平行であるため、上述した直交座標系を平行移動した座標系を想定すれば、同様の軸周りの回転角で、携帯端末３００の所定方向への移動量を規定できる。図８の左上に、回転角の基準軸を示す。図８に示すＹ３軸は携帯端末３００の前後方向の軸である。 The Y3 axis shown in FIG. 8 is an axis parallel to the above-mentioned Y axis. Since it is parallel to the Y axis, assuming a coordinate system in which the above-described orthogonal coordinate system is translated, the movement amount of the portable terminal 300 in the predetermined direction can be defined at the same rotation angle around the axis. The reference axis of the rotation angle is shown at the upper left of FIG. The Y3 axis shown in FIG. 8 is an axis in the front-rear direction of the portable terminal 300.
［携帯端末３００の所定方向への動き１］
　図８に示す携帯端末３００の状態１では、ユーザがＺ軸プラス方向から表示面３２１を見ている状態である。そして、ユーザがＺ軸プラス方向から表示面３２１を見ている状態から、右手で「ロール角マイナス方向」に携帯端末３００を９０度回転する（図中、矢印Ｑ）。言い換えると、「ロール角マイナス方向」は、携帯端末３００の筐体３５０の中央よりも右側面３２３側にある回転軸Ｙ３を中心とした携帯端末３００の筐体３５０の左側面３２５が表示面３２１側から背面３２７側に向う方向である。つまり、携帯端末３００の状態は、状態１から「ロール角マイナス方向」に９０度回転した状態２へ遷移する。 [Motion 1 of Mobile Terminal 300 in a Specified Direction]
In state 1 of the portable terminal 300 shown in FIG. 8, the user is looking at the display surface 321 from the Z-axis plus direction. Then, from the state where the user is looking at the display surface 321 from the Z-axis plus direction, the portable terminal 300 is rotated 90 degrees in the “roll angle minus direction” with the right hand (arrow Q in the figure). In other words, in the “roll angle negative direction”, the left side surface 325 of the case 350 of the portable terminal 300 centered on the rotation axis Y3 located on the right side 323 side of the center of the case 350 of the portable terminal 300 is the display surface 321 It is a direction from the side to the back surface 327 side. That is, the state of the portable terminal 300 transitions from the state 1 to the state 2 rotated 90 degrees in the “roll angle minus direction”.
　図９は、ユーザの持ち手（本図では左手）を判定するための携帯端末３００の動きを説明するための図（２）である。図８と共通する要素には同じ符号を付し、その詳細な説明を省略する。図９の左上に、回転角の基準軸を示す。なお、図９に示すＹ３軸は携帯端末３００の前後方向の軸である。 FIG. 9 is a diagram (2) for explaining the movement of the portable terminal 300 for determining the handle of the user (the left hand in this figure). Elements in common with FIG. 8 are assigned the same reference numerals and detailed explanations thereof will be omitted. The reference axis of the rotation angle is shown at the upper left of FIG. The Y3 axis shown in FIG. 9 is an axis in the front-rear direction of the portable terminal 300.
　図９に示す携帯端末３００の状態１では、ユーザがＺ軸プラス方向から表示面３２１を見ている状態である。そして、ユーザがＺ軸プラス方向から表示面３２１を見ている状態から、左手で「ロール角プラス方向」に携帯端末３００を９０度回転する（図中、矢印Ｑ１）。言い換えると、「ロール角マイナス方向」は、携帯端末３００の筐体３５０の中央よりも左側面３２５側にある回転軸Ｙ３を中心とした携帯端末３００の筐体３５０の左側面３２５が表示面３２１側から背面３２７側に向う方向である。つまり、携帯端末３００の状態は、状態１から「ロール角プラス方向」に９０度回転した状態４へ遷移する。 In state 1 of the portable terminal 300 shown in FIG. 9, the user is looking at the display surface 321 from the Z-axis plus direction. Then, from the state where the user is looking at the display surface 321 from the Z-axis plus direction, the portable terminal 300 is rotated 90 degrees in the “roll angle plus direction” with the left hand (arrow Q1 in the figure). In other words, in the “roll angle negative direction”, the left side surface 325 of the case 350 of the portable terminal 300 centered on the rotation axis Y3 located on the left side 325 side of the center of the case 350 of the portable terminal 300 is the display surface 321 It is a direction from the side to the back surface 327 side. That is, the state of the portable terminal 300 transitions from the state 1 to the state 4 rotated 90 degrees in the “roll angle plus direction”.
　携帯端末３００の状態が状態１から、状態２（図８参照）又は状態４（図９参照）へ遷移するとき、センサ部３０５は、３軸加速度センサ３０５Ａ、３０５Ｂに基づき、Ｚ軸マイナス方向への加速度の変化を検出し、検出値として持ち手判定部３３１へ出力する。 When the state of the portable terminal 300 transitions from the state 1 to the state 2 (see FIG. 8) or the state 4 (see FIG. 9), the sensor unit 305 moves in the Z axis negative direction based on the three- axis acceleration sensors 305A and 305B. The change in acceleration is detected and output to the hand determining unit 331 as a detected value.
　本実施の形態の場合、「ロール角マイナス方向」に携帯端末３００が回転する場合、回転軸Ｙ１側の３軸加速度センサ３０５Ｂで、Ｚ軸マイナス方向への加速度の変化が小さくなることが期待できる。同様に、「ロール角プラス方向」に携帯端末３００が回転する場合、回転軸Ｙ１側の３軸加速度センサ３０５Ａでは、Ｚ軸マイナス方向への加速度の変化が小さくなることが期待できる。 In the case of the present embodiment, when the portable terminal 300 rotates in the “roll angle negative direction”, it can be expected that the change in acceleration in the Z axis negative direction becomes small by the three-axis acceleration sensor 305B on the rotation axis Y1 side. . Similarly, when the portable terminal 300 rotates in the “roll angle plus direction”, it can be expected that in the 3-axis acceleration sensor 305A on the rotation axis Y1 side, the change in acceleration in the Z-axis minus direction becomes smaller.
　持ち手判定部３３１は、上述したセンサ部３０５の検出値に基づき、携帯端末３００の所定の向きの回転角を算出し、算出した所定の向きの回転角から、ユーザの持ち手が「右手」および「左手」のいずれであるかを判定する。 The holding hand determination unit 331 calculates the rotation angle of the mobile terminal 300 in the predetermined direction based on the detection value of the sensor unit 305 described above, and the user's hand is “right hand” from the calculated rotation angle in the predetermined direction. And "left hand" is determined.
　持ち手判定部３３１において、携帯端末３００の所定の向きの回転角（回転の向きとその角度）を算出する方法は、３軸加速度センサ３０５Ａ、３０５Ｂのそれぞれが検出したＺ軸方向の加速度から算出する移動量及びその差に基づき、既知の方法で算出することができる。 The method for calculating the rotation angle (the direction of rotation and the angle thereof) of the mobile terminal 300 in the predetermined direction in the holding hand determination unit 331 is calculated from the acceleration in the Z-axis direction detected by each of the three- axis acceleration sensors 305A and 305B. It can be calculated by a known method based on the amount of movement and the difference thereof.
　そして、持ち手判定部３３１は、持ち手判定部３３１で算出された携帯端末３００の所定の向きの回転角が、持ち手判定部３３１が保持する「携帯端末３００の所定の向きの回転角の判定基準（以下、「回転角の判定基準」という）に基づき、「ロール角マイナス方向」に９０度回転した場合の移動量の判定基準と同じであり、かつ、センサ部３０５の検出値に基づきセンサ部３０５がＺ軸マイナス方向への加速度の変化を検出していると判定する場合、持ち手判定部３３１は、ユーザの持ち手が右手であると判定する。 Then, the holding hand determination unit 331 determines that the rotation angle in the predetermined direction of the portable terminal 300 calculated by the holding hand determination unit 331 is “the rotation angle in the predetermined direction of the portable terminal 300” held by the holding hand determination unit 331. It is the same as the determination criterion of the movement amount when rotated 90 degrees in the “roll angle minus direction” based on the determination criterion (hereinafter referred to as “determination criterion of rotation angle”), and based on the detection value of the sensor unit 305 When it is determined that the sensor unit 305 detects a change in acceleration in the Z-axis negative direction, the holding hand determination unit 331 determines that the user's hand is the right hand.
　また、持ち手判定部３３１は、持ち手判定部３３１で算出された携帯端末３００の所定の向きの回転角が、持ち手判定部３３１が保持する「携帯端末３００の所定の向きの回転角の判定基準（以下、「回転角の判定基準」という）に基づき、「ロール角プラス方向」に９０度回転した場合の回転角の判定基準と同じであり、かつ、センサ部１０５の検出値に基づきセンサ部１０５がＺ軸マイナス方向への加速度の変化を検出していると判定する場合、持ち手判定部３３１は、ユーザの持ち手が左手であると判定する。なお、持ち手判定部１３１は、あらかじめ各軸周りの回転角に基づく回転角の判定基準をデータとして図示しない記憶素子に保持している。 Further, the holding hand determination unit 331 sets the rotation angle in the predetermined direction of the portable terminal 300 calculated by the holding hand determination unit 331 to “the rotation angle in the predetermined direction of the portable terminal 300” held by the holding hand determination unit 331. It is the same as the determination criterion of the rotation angle when rotated 90 degrees in the “roll angle plus direction” based on the determination criterion (hereinafter referred to as “determination criterion of the rotation angle”), and based on the detection value of the sensor unit 105 When it is determined that the sensor unit 105 detects a change in acceleration in the Z-axis negative direction, the holding hand determination unit 331 determines that the user's hand is the left hand. In addition, the holding hand determination unit 131 holds the determination reference of the rotation angle based on the rotation angle around each axis in advance in a storage element (not shown) as data.
　持ち手判定部３３１は、ユーザの持ち手の判定結果を、制御部３０７へ出力する。 The holding hand determination unit 331 outputs the determination result of the user's hand to the control unit 307.
　制御部３０７は、持ち手判定部３３１から入力されたユーザの持ち手の判定結果と、現在保持するユーザの持ち手の情報とを比較する。制御部３０７は、現在のユーザの持ち手の情報が持ち手判定部３３１から入力されたユーザの持ち手の判定結果と異なる場合、現在保持しているユーザの持ち手の情報を、ユーザの持ち手の判定結果に基づき更新する。なお、制御部３０７は、現在保持しているユーザの持ち手の情報が持ち手判定部３３１から入力されたユーザの持ち手の判定結果と同じである場合、現在保持しているユーザの持ち手の情報を更新しない。 The control unit 307 compares the determination result of the user's hand, which is input from the handle determination unit 331, with the information of the user's currently held hand. If the information on the current user's hand is different from the determination result of the user's hand input from the hand determination unit 331, the control unit 307 holds the information on the user's current hand held by the user. Update based on the hand judgment result. When the information on the user's hand currently held is the same as the determination result of the user's hand input from the hand holding determination unit 331, the control unit 307 holds the current user's hand. Do not update the information of
　また、制御部３０７は、保持する現在のユーザの持ち手の情報に基づき、表示部１０１の表示画面の方向、位置、及び大きさを変更するよう表示部１０１を制御する。また、制御部３０７は、操作部１０３からの入力に基づき、表示部１０１に表示された各種機能を制御する。 Further, the control unit 307 controls the display unit 101 to change the direction, the position, and the size of the display screen of the display unit 101 based on the information of the current user's hand held. The control unit 307 also controls various functions displayed on the display unit 101 based on the input from the operation unit 103.
　また、状態管理部３０９は、携帯端末３００のユーザの持ち手の情報を現在の携帯端末の状態を示す情報として管理する。携帯端末３００の所定の向きの回転角を示す情報は、持ち手が右手と判定された場合、「ロール角マイナス方向」に９０度回転であり、持ち手が左手と判定された場合、「ロール角プラス方向」に９０度回転である。 In addition, the state management unit 309 manages information on the hand of the user of the portable terminal 300 as information indicating the current state of the portable terminal. The information indicating the rotation angle in the predetermined direction of the portable terminal 300 is 90 degrees rotation in the “roll angle minus direction” when the holding hand is determined to be the right hand, and “rolling when the holding hand is determined to be the left hand It is a 90 degree rotation in the angle plus direction.
　次に、図１０を参照して、本実施の形態に係る携帯端末３００における表示部１０１の切り替え制御について説明する。図１０は、実施の形態２における、表示部１０１の切り替え制御フローである。 Next, switching control of the display unit 101 in the portable terminal 300 according to the present embodiment will be described with reference to FIG. FIG. 10 is a switching control flow of the display unit 101 according to the second embodiment.
　ステップＳＴ８０１では、センサ部３０５が、携帯端末３００の加速度のｘ、ｙ、ｚ成分（検出値）を検出する。すなわち、センサ部３０５が、加速度センサ３０５Ａの加速度のｘ、ｙ、ｚ成分と、加速度センサ３０５Ｂの加速度のｘ、ｙ、ｚ成分（検出値）を検出する。そして、ステップＳＴ８０３へ遷移する。 In step ST801, the sensor unit 305 detects x, y, z components (detection values) of the acceleration of the mobile terminal 300. That is, the sensor unit 305 detects x, y, and z components of the acceleration of the acceleration sensor 305A and x, y, and z components (detection values) of the acceleration of the acceleration sensor 305B. Then, the process transitions to step ST803.
　ステップＳＴ８０３では、持ち手判定部３３１が、３軸加速度センサ３０５Ａ、３０５Ｂのそれぞれが検出したＺ軸マイナス方向の加速度から算出する移動量及びその差に基づき、所定の向きの回転角を算出する。そして、分岐ＳＴ８０５へ遷移する。 In step ST803, the holding hand determination unit 331 calculates a rotation angle in a predetermined direction based on the movement amount calculated from the acceleration in the Z-axis negative direction detected by each of the 3- axis acceleration sensors 305A and 305B and the difference thereof. Then, the process transitions to branch ST 805.
　分岐ＳＴ８０５では、持ち手判定部３３１が、算出された所定の向きの回転角と回転角の判定基準とを比較し、ユーザの持ち手が右手であるかどうかを判定する。ユーザの持ち手が右手であると判定する場合（Ｙｅｓの場合）、ステップＳＴ８０７へ遷移し、そうでない場合（Ｎｏの場合）、分岐ＳＴ８０９へ遷移する。 In branch ST805, the holding hand determination unit 331 compares the calculated rotation angle in a predetermined direction with the determination criterion of the rotation angle, and determines whether the user's hand is the right hand. If it is determined that the user's hand is the right hand (in the case of Yes), the process proceeds to step ST807, and if not (in the case of No), the process proceeds to branch ST809.
　ステップＳＴ８０７では、持ち手判定部３３１は、ユーザの持ち手の判定結果（右手）を制御部３０７へ出力する。そして、分岐ＳＴ８１１へ遷移する。 In step ST 807, the holding hand determination unit 331 outputs the determination result (right hand) of the user's hand to the control unit 307. Then, the process transitions to branch ST811.
　分岐ＳＴ８１１では、制御部３０７が、ユーザの持ち手の判定結果（右手）を、状態管理部３０９が保持しているユーザの持ち手を示す情報と比較し、異なるかどうかを判定する。異なる場合（Ｙｅｓの場合）、ステップＳＴ８１５へ遷移し、同一の場合（Ｎｏの場合）はステップＳＴ８０１へ戻る。 In branch ST811, the control unit 307 compares the determination result (right hand) of the user's hand with the information indicating the user's hand held by the state management unit 309, and determines whether they are different. If they are different (in the case of Yes), the process proceeds to step ST815, and if they are the same (in the case of No), the process returns to step ST801.
　ステップＳＴ８１５では、制御部３０７が、状態管理部３０９が保持しているユーザの持ち手を示す情報（左手）を、ユーザの持ち手の判定結果に基づき更新し、表示部１０１を右手用の表示画面に切り替える。 In step ST815, control unit 307 updates information (left hand) indicating the user's hand held by state management unit 309 based on the determination result of the user's hand, and displays display unit 101 for the right hand. Switch to the screen.
　分岐ＳＴ８０９では、持ち手判定部３３１が、ユーザの持ち手が左手であるかどうかを判定する。ユーザの持ち手が左手であると判定する場合（Ｙｅｓの場合）、ステップＳＴ８１３へ遷移し、そうでない場合（Ｎｏの場合）、ステップＳＴ８０１へ戻る。 In branch ST809, the holding hand determination unit 331 determines whether the user's holding hand is the left hand. If it is determined that the user's hand is the left hand (in the case of Yes), the process proceeds to step ST813. If not (in the case of No), the process returns to step ST801.
　ステップＳＴ８１３では、持ち手判定部３３１は、ユーザの持ち手の判定結果（左手）を制御部３０７へ出力する。そして、分岐ＳＴ８１７へ遷移する。 In step ST813, the holding hand determination unit 331 outputs the determination result (left hand) of the user's holding hand to the control unit 307. Then, the process transitions to branch ST 817.
　分岐ＳＴ８１７では、ユーザの持ち手の判定結果（左手）を、状態管理部３０９が保持しているユーザの持ち手を示す情報と比較し、異なるかどうかを判定する。異なる場合（Ｙｅｓの場合）、ステップＳＴ８１９へ遷移し、同一の場合（Ｎｏの場合）はステップＳＴ８０１へ戻る。 In branch ST 817, the determination result (left hand) of the user's handle is compared with the information indicating the user's handle held by the state management unit 309, and it is determined whether or not they are different. If they are different (in the case of Yes), the process proceeds to step ST819. If they are the same (in the case of No), the process returns to step ST801.
　ステップＳＴ８１９では、制御部３０７が、状態管理部３０９が保持しているユーザの持ち手を示す情報を、ユーザの持ち手の判定結果に基づき更新し、表示部１０１を左手用の表示画面に切り替える。 In step ST 819, control unit 307 updates the information indicating the user's handle held by state management unit 309 based on the determination result of the user's hand, and switches display unit 101 to the display screen for the left hand. .
　本実施の形態に係る携帯端末３００は、センサ部３０５により検出される加速度のｘ、ｙ、ｚ成分（すなわち、加速度センサ３０５Ａの加速度のｘ、ｙ、ｚ成分と、加速度センサ３０５Ｂの加速度のｘ、ｙ、ｚ成分）により所定の向きの回転角を算出し、ユーザの持ち手（本実施の形態では片手を想定）を判定することができる。そのため、本実施の形態に係る携帯端末３００は、表示部１０１の表示をユーザの持ち手に応じて適用的に切り替えることができる。したがって、本実施の形態に係る携帯端末３００は、表示部１０１を介して、ユーザの持ち手に合わせて、ユーザにとって使い勝手の良い表示を行うことができる。 The portable terminal 300 according to the present embodiment has x, y, z components of the acceleration detected by the sensor unit 305 (that is, x, y, z components of the acceleration of the acceleration sensor 305A, and x of the acceleration of the acceleration sensor 305B). The rotation angle in a predetermined direction can be calculated by the y, z components), and the user's hand (assuming one hand in the present embodiment) can be determined. Therefore, portable terminal 300 according to the present embodiment can switch the display of display unit 101 according to the user's hand. Therefore, portable terminal 300 according to the present embodiment can perform convenient display for the user via display unit 101, in accordance with the user's handle.
　さらに、本実施の形態に係る携帯端末３００では、３軸加速度センサ３０５Ａ、３０５Ｂを筐体３５０内に備えている。そのため、検出の際、通常想定される利用状態として、ユーザの右手又は左手の掌が携帯端末３００の背面に向き、かつユーザがＺ軸プラス方向から表示面３２１を見ている状態では、ユーザが携帯端末３００のどの部分に指を置いて携帯端末３００を把持しても制約を受けない。 Furthermore, in the portable terminal 300 according to the present embodiment, the three- axis acceleration sensors 305A and 305B are provided in the housing 350. Therefore, at the time of detection, it is assumed that the palm of the user's right or left hand is directed to the back of portable terminal 300 and the user is looking at display surface 321 from the Z-axis plus direction. There is no restriction on holding the portable terminal 300 by placing a finger on any part of the portable terminal 300.
　本実施の形態に係る携帯端末３００では、加速度センサ３０５Ａ、３０５Ｂが携帯端末３００の表示面３２１と垂直な面（側面）のうち、対抗する２つの面３２３、３２５の近傍にそれぞれ配置されている。そのため、いずれか一方の加速度センサで検出するＺ軸マイナス方向への加速度の値が小さくなることが期待できる。 In portable terminal 300 according to the present embodiment, acceleration sensors 305A and 305B are respectively disposed in the vicinity of two opposing surfaces 323 and 325 in the surface (side surface) perpendicular to display surface 321 of portable terminal 300. . Therefore, it can be expected that the value of the acceleration in the negative direction of the Z axis detected by any one of the acceleration sensors will be small.
　さらに、本実施の形態に係る携帯端末３００では、通常想定される利用状態として、ユーザの右手の掌が携帯端末３００の背面に向き、かつユーザがＺ軸プラス方向から表示面３２１を見ている状態から「ロール角マイナス方向」に携帯端末３００を９０度回転させた場合、持ち手が右手と判定される。しかしながら、通常想定される利用状態では、左手が持ち手である場合には、ユーザがＺ軸プラス方向から表示面３２１を見ている状態から「ロール角マイナス方向」に携帯端末３００を９０度回転させることはできない。つまり、通常想定される利用状態では、左手の可動域の範囲外である。したがって、本実施の形態に係る携帯端末３００では、通常想定される利用状態において、ユーザがＺ軸プラス方向から表示面３２１を見ている状態から「ロール角マイナス方向」に携帯端末３００を９０度回転させた場合、持ち手の誤判定を確実に防止することができる。 Furthermore, in portable terminal 300 according to the present embodiment, the palm of the user's right hand is facing the back of portable terminal 300 and the user is looking at display surface 321 from the Z-axis plus direction, as a normally assumed use state. When the portable terminal 300 is rotated 90 degrees in the “roll angle negative direction” from the state, the holding hand is determined to be the right hand. However, in the normally assumed use state, when the left hand is the holding hand, the portable terminal 300 is rotated 90 degrees in the “roll angle minus direction” from the state where the user is looking at the display surface 321 from the Z axis plus direction. I can not let it go. That is, in the normally assumed use state, it is out of the range of the movable range of the left hand. Therefore, in portable terminal 300 according to the present embodiment, in a normally assumed use state, portable terminal 300 is 90 degrees in the “roll angle minus direction” from the state where the user is looking at display surface 321 from the Z axis plus direction. In the case of rotation, it is possible to reliably prevent an erroneous determination of the holding hand.
　同様に、通常想定される利用状態として、ユーザの左手の掌が携帯端末３００の背面に向き、かつユーザがＺ軸プラス方向から表示面３２１を見ている状態から「ロール角プラス方向」に携帯端末３００を９０度回転させた場合、持ち手が左手と判定される。しかしながら、通常想定される利用状態では、右手が持ち手である場合には、ユーザがＺ軸プラス方向から表示面３２１を見ている状態から「ロール角プラス方向」に携帯端末３００を９０度回転させることはできない。つまり、通常想定される利用状態では、右手の可動域の範囲外である。したがって、本実施の形態に係る携帯端末３００では、通常想定される利用状態において、ユーザがＺ軸プラス方向から表示面３２１を見ている状態から「ロール角プラス方向」に携帯端末３００を９０度回転させた場合、持ち手の誤判定を確実に防止することができる。 Similarly, as a normally assumed use state, the palm of the left hand of the user is facing the back of the portable terminal 300, and the user is looking at the display surface 321 from the Z-axis plus direction. When the terminal 300 is rotated 90 degrees, the handle is determined to be the left hand. However, in the normally assumed use state, when the right hand is the holding hand, the portable terminal 300 is rotated 90 degrees in the “roll angle plus direction” from the state where the user is looking at the display surface 321 from the Z axis plus direction. I can not let it go. That is, in the normally assumed use state, it is out of the range of the movable range of the right hand. Therefore, in portable terminal 300 according to the present embodiment, in a normally assumed use state, portable terminal 300 is 90 degrees in the “roll angle plus direction” from the state where the user is looking at display surface 321 from the Z axis plus direction. In the case of rotation, it is possible to reliably prevent an erroneous determination of the holding hand.
　なお、本実施の形態に係る携帯端末３００は、「ロール角マイナス方向」に９０度である場合、ユーザの持ち手を右手であると判定するが、これに限らない。例えば、誤判定を防止するために、本実施の形態に係る携帯端末３００は、「ロール角マイナス方向」の回転角を９０度よりも大きい回転角または９０度以上の回転角の時に、ユーザの持ち手を右手であると判定しても良い。同様に、誤判定を防止するために、本実施の形態に係る携帯端末３００は、「ロール角プラス方向」の回転角を９０度よりも大きい回転角または９０度以上の回転角の時に、ユーザの持ち手を左手であると判定しても良い。さらに、９０度よりも大きい回転角または９０度以上の回転角とする代わりに、所定角度よりも大きい回転角または所定角度以上の回転角としてもよい。 In the case where the mobile terminal 300 according to the present embodiment is 90 degrees in the “roll angle minus direction”, the mobile terminal 300 determines that the user's hand is the right hand, but the present invention is not limited thereto. For example, in order to prevent an erroneous determination, the portable terminal 300 according to the present embodiment is configured such that the rotation angle in the “roll angle minus direction” is greater than 90 degrees or 90 degrees or more. It may be determined that the hand is the right hand. Similarly, in order to prevent an erroneous determination, the portable terminal 300 according to the present embodiment is a user when the rotation angle of the “roll angle plus direction” is a rotation angle larger than 90 degrees or a rotation angle of 90 degrees or more. It may be determined that the holding hand of the is the left hand. Furthermore, instead of setting the rotation angle larger than 90 degrees or the rotation angle larger than 90 degrees, the rotation angle larger than the predetermined angle or the rotation angle larger than the predetermined angle may be used.
［携帯端末３００の動き２］
　なお、持ち手判定部３３１は、図８の矢印Ｕで示すように、（３）携帯端末３００が状態２から再び状態１へ戻る、つまり、携帯端末３００が「ロール角マイナス方向」に９０度回転した後に、「ロール角プラス方向」に９０度回転した場合、持ち手判定部３３１は、ユーザの持ち手が右手であると判定しても良い。同様に、図９の矢印Ｕ１に示すように、携帯端末３００が状態４から再び状態１へ戻る、つまり、携帯端末３００が「ロール角プラス方向」に９０度回転した後に、「ロール角マイナス方向」に９０度回転した場合に、持ち手判定部３３１は、ユーザの持ち手が左手であると判定しても良い。このように判定することで、（Ａ）初期状態（本実施の形態の場合、状態１）により、ユーザの意図に反する持ち手判定がなされてしまう場合や、（Ｂ）ユーザが手に持っていない状態で意図せず持ち手モードが切り替わってしまうような場合などの誤判定を防止することができる。例えば、右手の場合、表示面３２１を下向きにして置いてある携帯端末３００を左手で持って、表示面３２１をユーザ自身に向ける動作による誤判定や、携帯端末３００が、ユーザの所持する鞄の中で動いて「ロール角マイナス方向」に９０度回転したと誤判定される場合が考えられる。 [Movement 2 of Mobile Terminal 300]
As indicated by the arrow U in FIG. 8, (3) the portable terminal 300 returns from the state 2 back to the state 1 again, that is, the portable terminal 300 is 90 degrees in the “roll angle minus direction”. After rotating, when rotating 90 degrees in the “roll angle plus direction”, the holding hand determination unit 331 may determine that the user's hand is the right hand. Similarly, as shown by arrow U1 in FIG. 9, the portable terminal 300 returns from the state 4 to the state 1 again, that is, after the portable terminal 300 is rotated 90 degrees in the "roll angle plus direction", the "roll angle minus direction When rotating by 90 degrees, the holding hand determination unit 331 may determine that the user's hand is the left hand. As a result of such determination, (A) the case where the hand is judged to be against the user's intention in the initial state (state 1 in the case of the present embodiment), or (B) the user holds the hand. It is possible to prevent an erroneous determination such as the case where the hand mode is switched unintentionally in the absence state. For example, in the case of the right hand, the mobile terminal 300 placed with the display surface 321 facing downward is held with the left hand, and erroneous determination is caused by the operation of pointing the display surface 321 to the user itself. It is possible that there is a case in which it is determined that the wheel moves inward and is rotated 90 degrees in the "roll angle minus direction".
　なお、本実施の形態では、重力方向の影響を受けず、いかなる初期状態であっても、ユーザがＺ軸プラス方向から表示面３２１を見ている状態から「ロール角マイナス方向」に携帯端末３００を９０度回転させた場合、持ち手が右手と判定することができる。 In the present embodiment, the mobile terminal 300 is not affected by the direction of gravity, and in any initial state, from the state where the user is looking at the display surface 321 from the Z-axis plus direction to the “roll angle minus direction”. Can be determined to be the right hand.
（実施の形態３）
　図１１は、実施の形態３に係る携帯端末５００の構成を示すブロック図である。図１１に示すように、実施の形態３に係る携帯端末５００は、携帯端末５００の各種機能を表示する表示部１０１と、表示部１０１に表示された各種機能をユーザが操作するための操作部１０３と、角速度を検出できる角速度センサ５０５Ａを備えるセンサ部５０５と、表示部１０１の表示や携帯端末５００の各種機能を制御する制御部５０７と、状態管理部５０９と、持ち手判定部５３１と、を備える。 Third Embodiment
FIG. 11 is a block diagram showing the configuration of mobile terminal 500 according to the third embodiment. As shown in FIG. 11, the portable terminal 500 according to the third embodiment includes a display unit 101 for displaying various functions of the portable terminal 500, and an operation unit for the user to operate various functions displayed on the display unit 101. 103, a sensor unit 505 including an angular velocity sensor 505A that can detect an angular velocity, a control unit 507 that controls the display of the display unit 101 and various functions of the mobile terminal 500, a state management unit 509, and a handle determination unit 531; Equipped with
　表示部１０１は、携帯端末５００の各種機能を表示する。また、表示部１０１は、後述する制御部５０７の制御に基づき、表示画面の方向、位置、及び大きさが、ユーザの持ち手に応じて適宜変わるよう構成されている。 The display unit 101 displays various functions of the mobile terminal 500. The display unit 101 is configured to appropriately change the direction, position, and size of the display screen according to the user's hand under the control of the control unit 507 described later.
　センサ部５０５は、角速度を検出できる１つの角速度センサ５０５Ａで構成される。角速度センサ５０５Ａは、携帯端末５００の表示面５２１と垂直な面（側面）のうち互いに対向する面５２３、５２５の間のほぼ中央に位置し、携帯端末５００の筐体５５０内に設けられている。センサ部５０５は、角速度センサ５０５Ａにより、所定の向きの角速度を検出する。センサ部５０５は所定の向きの角速度を検出値として、「ロール角の角速度」を持ち手判定部５３１へ出力する。なお、角速度センサ５０５Ａの位置は、携帯端末５００の表示面５２１と垂直な面（側面）のうち互いに対向する面５２３、５２５の間のほぼ中央に位置していれば良い。 The sensor unit 505 is configured of one angular velocity sensor 505A that can detect an angular velocity. Angular velocity sensor 505A is provided substantially in the center between opposing surfaces 523 and 525 of the surfaces (side surfaces) perpendicular to display surface 521 of portable terminal 500, and is provided in housing 550 of portable terminal 500. . The sensor unit 505 detects an angular velocity in a predetermined direction by the angular velocity sensor 505A. The sensor unit 505 outputs the “angular velocity of the roll angle” to the hand determining unit 531 using the angular velocity in a predetermined direction as a detected value. Note that the position of the angular velocity sensor 505A may be approximately at the center between the surfaces 523 and 525 facing each other in the surface (side surface) perpendicular to the display surface 521 of the portable terminal 500.
　ここで、図１２を参照して、センサ部５０５により検出される所定の向きの角速度について説明する。図１２は、ユーザの持ち手（本図では右手）を判定するための携帯端末５００の動きを説明する図（１）であり、図１３は、ユーザの持ち手（本図では左手）を判定するための携帯端末５００の動きを説明する図（２）である。 Here, with reference to FIG. 12, an angular velocity in a predetermined direction detected by the sensor unit 505 will be described. FIG. 12 is a diagram (1) for explaining the movement of the portable terminal 500 for determining the user's hand (right hand in this figure), and FIG. 13 is for determining the user's hand (left hand in this figure) It is a figure (2) explaining the motion of the portable terminal 500 for doing.
　なお、図１２、図１３では、センサ部５０５により検出される方向を定義する軸と回転角については、図２と同様である。つまり、角速度センサ５０５Ａの中心を中心として、表示部１０１を備える表示面５２１と垂直な方向をＺ軸方向とした、互いに直交する３軸Ｘ、Ｙ、Ｚ軸で構成される直交座標系を設定する。各軸周りの回転角について、Ｚ軸周りの回転角をヨー角、Ｙ軸周りの回転角をロール角、Ｘ軸周りの回転角をピッチ角とする。つまり、センサ部５０５が検出する所定の向きの角速度とは、各軸周りの角速度及びその向きで規定することができる。 In FIGS. 12 and 13, the axis defining the direction detected by the sensor unit 505 and the rotation angle are the same as in FIG. That is, an orthogonal coordinate system including three axes X, Y, and Z orthogonal to each other is set, with the direction perpendicular to the display surface 521 including the display unit 101 as the Z axis direction around the center of the angular velocity sensor 505A. Do. Regarding the rotation angle around each axis, let the rotation angle around Z axis be the yaw angle, the rotation angle around Y axis be the roll angle, and the rotation angle around X axis be the pitch angle. That is, the angular velocity in the predetermined direction detected by the sensor unit 505 can be defined by the angular velocity around each axis and the direction thereof.
　また、図１２に示すＹ５軸は上述したＹ軸に平行な軸である。Ｙ軸に平行であるため、上述した直交座標系を平行移動した座標系を想定すれば、同様の軸周りの回転角で、所定の向きの角速度を規定できる。図１２の左上に、回転角の基準軸を示す。図１２に示すＹ５軸は携帯端末５００の前後方向の軸である。 The Y5 axis shown in FIG. 12 is an axis parallel to the above-mentioned Y axis. Since it is parallel to the Y axis, assuming a coordinate system in which the above-described orthogonal coordinate system is translated, an angular velocity in a predetermined direction can be defined at a similar rotation angle around the axis. The reference axis of the rotation angle is shown at the upper left of FIG. The Y5 axis illustrated in FIG. 12 is an axis in the front-rear direction of the portable terminal 500.
［携帯端末５００の動き１］
　図１２に示す携帯端末５００の状態１では、ユーザがＺ軸プラス方向から表示面５２１を見ている状態である。そして、ユーザがＺ軸プラス方向から表示面５２１を見ている状態から、右手で「ロール角マイナス方向」に携帯端末５００を９０度回転する（図中、矢印Ｒ）。ここで、「所定の向きの回転角」とは、実施の形態１と同様、ユーザの持ち手が右手の場合、回転軸Ｙ５が携帯端末５００の筐体５５０の中央よりも右側面５２３側にあり、携帯端末５００がユーザの持ち手により、回転軸Ｙ５を中心としてロール角マイナス方向に所定の角度分回転した際の回転角である。さらに、ユーザの持ち手が右手の場合、携帯端末５００の筐体５５０の中央よりも右側面５２３側にある回転軸Ｙ５を中心としたロール角マイナス方向は、携帯端末５００の筐体５５０の左側面５２５が表示面５２１側から背面５２７側に向う方向である（図１２参照）。つまり、携帯端末５００の状態は、状態１から「ロール角マイナス方向」に９０度回転した状態２へ遷移する。
　なお、本実施の形態では、ユーザの持ち手が右手の場合について説明しているが、ユーザの持ち手が左手の場合、次のように言い換えることができる。つまり、ユーザの持ち手が左手の場合、「所定の向きの回転角」とは、回転軸Ｙ５が携帯端末５００の筐体５５０の中央よりも左側面５２５側にあり、携帯端末５００がユーザの持ち手により、回転軸Ｙ５を中心としてロール角プラス方向に所定の角度分回転した際の回転角である。さらに、ユーザの持ち手が左手の場合、携帯端末５００の筐体５５０の中央よりも左側面５２５側にある回転軸Ｙ５を中心としたロール角プラス方向は、携帯端末５００の筐体５５０の右側面５２３が表示面５２１側から背面５２７側に向う方向である。以下、本実施の形態において、「所定の向きの回転角」は、同じ意味で用いる。 [Movement 1 of Mobile Terminal 500]
In state 1 of the portable terminal 500 shown in FIG. 12, the user is looking at the display surface 521 from the Z-axis plus direction. Then, from the state where the user is looking at the display surface 521 from the Z-axis plus direction, the portable terminal 500 is rotated 90 degrees in the “roll angle minus direction” with the right hand (arrow R in the figure). Here, “rotational angle in a predetermined direction” means that the rotational axis Y5 is closer to the right side surface 523 than the center of the case 550 of the portable terminal 500 when the user's handle is the right hand, as in the first embodiment. This is a rotation angle when the portable terminal 500 is rotated by a predetermined angle in the minus roll angle direction about the rotation axis Y5 by the user's handle. Furthermore, when the user holds the right hand, the negative roll angle direction about the rotation axis Y5 on the right side 523 side of the center of the case 550 of the portable terminal 500 is the left side of the case 550 of the portable terminal 500. The surface 525 is a direction from the display surface 521 side to the back surface 527 side (see FIG. 12). That is, the state of the portable terminal 500 transitions from the state 1 to the state 2 rotated 90 degrees in the “roll angle minus direction”.
In the present embodiment, the case where the user's handle is the right hand is described, but when the user's handle is the left hand, the following can be reworded. That is, when the user holds the left hand, “rotational angle in a predetermined direction” means that the rotation axis Y5 is closer to the left side surface 525 than the center of the case 550 of the portable terminal 500, and the portable terminal 500 is the user. It is a rotation angle when rotating by a predetermined angle in the roll angle plus direction about the rotation axis Y5 by the handle. Furthermore, when the user holds the left hand, the roll angle plus direction centering on the rotation axis Y5 on the left side 525 side of the center of the case 550 of the portable terminal 500 is the right side of the case 550 of the portable terminal 500. The surface 523 is a direction from the display surface 521 side to the back surface 527 side. Hereinafter, in the present embodiment, “rotational angle in a predetermined direction” is used in the same meaning.
　図１３は、ユーザの持ち手（本図では左手）を判定するための携帯端末５００の動きを説明するための図（２）である。図１２と共通する要素には同じ符号を付し、その詳細な説明を省略する。図１３の左上に、回転角の基準軸を示す。なお、図１３に示すＹ５軸は携帯端末５００の前後方向の軸である。 FIG. 13 is a diagram (2) for explaining the movement of the portable terminal 500 for determining the handle of the user (the left hand in this figure). Elements in common with FIG. 12 are assigned the same reference numerals and detailed explanations thereof will be omitted. The reference axis of the rotation angle is shown at the upper left of FIG. The Y5 axis illustrated in FIG. 13 is an axis in the front-rear direction of the portable terminal 500.
　図１３に示す携帯端末５００の状態１では、ユーザがＺ軸プラス方向から表示面５２１を見ている状態である。そして、ユーザがＺ軸プラス方向から表示面５２１を見ている状態から、左手で「ロール角プラス方向」に携帯端末５００を９０度回転する（図中、矢印Ｒ１）。つまり、携帯端末５００の状態は、状態１から「ロール角プラス方向」に９０度回転した状態４へ遷移する。 In state 1 of the portable terminal 500 shown in FIG. 13, the user is looking at the display surface 521 from the Z-axis plus direction. Then, from the state where the user is looking at display surface 521 from the Z-axis plus direction, portable terminal 500 is rotated 90 degrees in the “roll angle plus direction” with the left hand (arrow R1 in the figure). That is, the state of the portable terminal 500 transitions from the state 1 to the state 4 rotated 90 degrees in the “roll angle plus direction”.
　携帯端末５００の状態が状態１から、状態２（図１２参照）又は状態４（図１３参照）へ遷移するとき、センサ部５０５は、角速度センサ５０５Ａの検出に基づき、（１）Ｚ軸マイナス方向への加速度の変化、及び（２）ロール角の角速度を検出し、これらの検出結果を検出値として持ち手判定部５３１へ出力する。なお、Ｚ軸マイナス方向への加速度とは、携帯端末５００の筐体５５０の表示面５２１側から背面５２７側に向かう方向への加速度と言い換えることができる。 When the state of the portable terminal 500 transitions from the state 1 to the state 2 (see FIG. 12) or the state 4 (see FIG. 13), the sensor unit 505 performs (1) Z axis negative direction based on detection by the angular velocity sensor 505A. (2) The angular velocity of the roll angle is detected, and the detection results are output to the holding hand determination unit 531 as detection values. The acceleration in the negative Z-axis direction can be reworded as an acceleration in the direction from the display surface 521 side of the housing 550 of the portable terminal 500 toward the back surface 527 side.
　持ち手判定部５３１は、上述したセンサ部５０５の検出値（角速度とその向き）に基づき、携帯端末５００の所定の向きの回転角を算出し、算出した所定の向きの回転角から、ユーザの持ち手が「右手」および「左手」のいずれであるかを判定する。 The holding hand determination unit 531 calculates the rotation angle of the predetermined direction of the portable terminal 500 based on the detection value (angular velocity and its direction) of the sensor unit 505 described above, and the user calculates the rotation angle of the predetermined direction. It is determined whether the handle is "right hand" or "left hand".
　持ち手判定部５３１は、センサ部５０５が検出値として検出する角速度の時間変化から、所定の向きの回転角を算出する方法は、既知の算出方法で求めることができる。具体的には、角速度を積分すれば、回転角を求めることができる。 The method for calculating the rotation angle in the predetermined direction from the temporal change of the angular velocity detected by the sensor unit 505 as a detection value can be obtained by a known calculation method. Specifically, the rotation angle can be determined by integrating the angular velocity.
　そして、持ち手判定部５３１は、持ち手判定部５３１で算出された携帯端末５００の所定の向きの回転角が、持ち手判定部５３１が保持する「携帯端末５００の所定の向きの回転角の判定基準（以下、「回転角の判定基準」という）に基づき、「ロール角マイナス方向」に９０度回転した場合の回転角の判定基準と同じであり、かつ、センサ部５０５の検出値に基づきセンサ部５０５がＺ軸マイナス方向への加速度の変化を検出していると判定する場合、持ち手判定部５３１は、ユーザの持ち手が右手であると判定する。 Then, the holding hand determination unit 531 determines that the rotation angle in the predetermined direction of the portable terminal 500 calculated by the holding hand determination unit 531 is “the rotation angle in the predetermined direction of the portable terminal 500 held by the holding hand determination unit 531. This is the same as the determination criterion of the rotation angle when rotated 90 degrees in the “roll angle minus direction” based on the determination criterion (hereinafter referred to as “determination criterion of the rotation angle”), and based on the detection value of the sensor unit 505 When it is determined that the sensor unit 505 detects a change in acceleration in the Z-axis negative direction, the holding hand determining unit 531 determines that the user's holding hand is the right hand.
　また、持ち手判定部５３１は、持ち手判定部５３１で算出された携帯端末５００の所定の向きの回転角が、持ち手判定部５３１が保持する「携帯端末５００の所定の向きの回転角の判定基準（以下、「回転角の判定基準」という）に基づき、「ロール角プラス方向」に９０度回転した場合の回転角の判定基準と同じであり、かつ、センサ部５０５の検出値に基づきセンサ部５０５がＺ軸マイナス方向への加速度の変化を検出していると判定する場合、持ち手判定部５３１は、ユーザの持ち手が左手であると判定する。なお、持ち手判定部５３１は、あらかじめ各軸周りの回転角に基づく回転角の判定基準をデータとして図示しない記憶素子に保持している。 Further, the holding hand determination unit 531 is configured such that the rotation angle in the predetermined direction of the portable terminal 500 calculated by the holding hand determination unit 531 is “the rotation angle in the predetermined direction of the portable terminal 500 held by the holding hand determination unit 531. This is the same as the determination criterion of the rotation angle when rotated 90 degrees in the “roll angle plus direction” based on the determination criterion (hereinafter referred to as “determination criterion of rotation angle”), and based on the detection value of the sensor unit 505 When it is determined that the sensor unit 505 detects a change in acceleration in the Z-axis negative direction, the holding hand determining unit 531 determines that the user's holding hand is the left hand. In addition, the holding hand determination unit 531 holds the determination reference of the rotation angle based on the rotation angle around each axis in advance in a storage element (not shown) as data.
　持ち手判定部５３１は、ユーザの持ち手の判定結果を制御部５０７へ出力する。 The handle determination unit 531 outputs the determination result of the user's handle to the control unit 507.
　制御部５０７は、持ち手判定部５３１から入力されたユーザの持ち手の判定結果と、現在保持しているユーザの持ち手の情報を比較する。制御部５０７は、現在保持しているユーザの持ち手の情報が持ち手判定部５３１から入力されたユーザの持ち手の判定結果と異なる場合、現在保持しているユーザの持ち手の情報を、ユーザの持ち手の判定結果に基づき更新し、現在保持しているユーザの持ち手の情報を制御部５０７へ出力する。なお、制御部５０７は、現在保持しているユーザの持ち手の情報が持ち手判定部５３１から入力されたユーザの持ち手の判定結果と同じである場合、現在保持しているユーザの持ち手の情報を更新しない。 The control unit 507 compares the determination result of the user's hand, which is input from the handle determination unit 531, with the information of the user's currently held hand. If the currently held information of the user's hand is different from the determination result of the user's hand input from the holding hand determination unit 531, the control unit 507 determines that the currently held user's hand information is It updates based on the determination result of the user's hand, and outputs the information of the user's hand currently held to the control unit 507. When the information on the user's hand currently held is the same as the determination result of the user's hand input from the hand determination unit 531, the control unit 507 holds the user's currently held hand Do not update the information of
　制御部５０７は、保持する現在のユーザの持ち手の情報に基づき、表示部１０１の表示画面の方向、位置、及び大きさを変更するよう表示部１０１を制御する。また、制御部５０７は、操作部１０３からの入力に基づき、表示部１０１に表示された各種機能を制御する。 The control unit 507 controls the display unit 101 to change the direction, the position, and the size of the display screen of the display unit 101 based on the information of the current user's hand held. The control unit 507 also controls various functions displayed on the display unit 101 based on the input from the operation unit 103.
　状態管理部５０９は、携帯端末５００のユーザの持ち手の情報を、現在の携帯端末の状態を示す情報として管理する。携帯端末５００の所定の向きの回転角を示す情報は、持ち手が右手と判定された場合、「ロール角マイナス方向」に９０度回転であり、持ち手が左手と判定された場合、「ロール角プラス方向」に９０度回転である。 The state management unit 509 manages information on the hand of the user of the portable terminal 500 as information indicating the current state of the portable terminal. The information indicating the rotation angle in the predetermined direction of the portable terminal 500 is 90 degrees rotation in the “roll angle minus direction” when the holding hand is determined to be the right hand, and “rolling when the holding hand is determined to be the left hand It is a 90 degree rotation in the angle plus direction.
　次に、図１４を参照して、本実施の形態に係る携帯端末５００における表示部１０１の切り替え制御について説明する。図１４は、実施の形態３における、表示部１０１の切り替え制御フローである。 Next, switching control of display unit 101 in portable terminal 500 according to the present embodiment will be described with reference to FIG. FIG. 14 is a switching control flow of the display unit 101 according to the third embodiment.
　ステップＳＴ１１０１では、センサ部５０５が、（１）Ｚ軸マイナス方向への加速度の変化、及び（２）ロール角の角速度を検出する。そして、ステップＳＴ１１０３へ遷移する。 In step ST1101, the sensor unit 505 detects (1) a change in acceleration in the negative direction of the Z axis, and (2) an angular velocity of the roll angle. Then, the process transitions to step ST1103.
　ステップＳＴ１１０３では、持ち手判定部５３１が、センサ部５０５の検出値に基づき、所定の向きの回転角を算出する。そして、分岐ＳＴ１１０５へ遷移する。 In step ST1103, the holding hand determination unit 531 calculates a rotation angle in a predetermined direction based on the detection value of the sensor unit 505. Then, the process transitions to branch ST1105.
　分岐ＳＴ１１０５では、持ち手判定部５３１が、算出した所定の向きの回転角と回転角の判定基準とを比較し、ユーザの持ち手が右手であるかどうかを判定する。ユーザの持ち手が右手であると判定する場合（Ｙｅｓの場合）、ステップＳＴ１１０７へ遷移し、そうでない場合（Ｎｏの場合）、分岐ＳＴ１１０９へ遷移する。 In branch ST1105, the holding hand determination unit 531 compares the calculated rotation angle in a predetermined direction with the determination criterion of the rotation angle, and determines whether the user's hand is the right hand. If it is determined that the user's hand is the right hand (in the case of Yes), the process proceeds to step ST1107. If not (in the case of No), the process proceeds to branch ST1109.
　ステップＳＴ１１０７では、持ち手判定部５３１は、ユーザの持ち手の判定結果（右手）を制御部５０７へ出力する。そして、分岐ＳＴ１１１１へ遷移する。 In step ST1107, the holding hand determination unit 531 outputs the determination result (right hand) of the user's holding hand to the control unit 507. Then, the process transitions to branch ST1111.
　分岐ＳＴ１１１１では、制御部５０７が、ユーザの持ち手の判定結果（右手）を、状態管理部５０９が保持しているユーザの持ち手を示す情報と比較し、異なるかどうかを判定する。異なる場合（Ｙｅｓの場合）、ステップＳＴ１１１５へ遷移し、同一の場合（Ｎｏの場合）はステップＳＴ１１０１へ戻る。 In branch ST1111, the control unit 507 compares the determination result (right hand) of the user's hand with the information indicating the user's hand held by the state management unit 509, and determines whether they are different. If they are different (in the case of Yes), the process proceeds to step ST1115. If they are the same (in the case of No), the process returns to step ST1101.
　ステップＳＴ１１１５では、制御部５０７が、状態管理部５０９が保持しているユーザの持ち手を示す情報をユーザの持ち手の判定結果に基づき更新し、表示部１０１を右手用の表示画面に切り替える。 In step ST1115, the control unit 507 updates the information indicating the user's hand held by the state management unit 509 based on the determination result of the user's hand, and switches the display unit 101 to the display screen for the right hand.
　分岐ＳＴ１１０９では、持ち手判定部５３１が、ユーザの持ち手が左手であるかどうかを判定する。ユーザの持ち手が左手であると判定する場合（Ｙｅｓの場合）、ステップＳＴ１１１３へ遷移し、そうでない場合（Ｎｏの場合）、ステップＳＴ１１０１へ戻る。 In branch ST1109, the holding hand determination unit 531 determines whether the user's holding hand is the left hand. If it is determined that the user's hand is the left hand (in the case of Yes), the process proceeds to step ST1113; otherwise (the case of No), the process returns to step ST1101.
　ステップＳＴ１１１３では、持ち手判定部５３１は、ユーザの持ち手の判定結果（左手）を制御部５０７へ出力する。そして、分岐ＳＴ１１１７へ遷移する。 In step ST1113, the holding hand determination unit 531 outputs the determination result (left hand) of the user's holding hand to the control unit 507. Then, the process transitions to branch ST1117.
　分岐ＳＴ１１１７では、制御部５０７が、ユーザの持ち手の判定結果（左手）を、状態管理部５０９が保持しているユーザの持ち手を示す情報と比較し、異なるかどうかを判定する。異なる場合（Ｙｅｓの場合）、ステップＳＴ１１１９へ遷移し、同一の場合（Ｎｏの場合）はステップＳＴ１１０１へ戻る。 In branch ST1117, the control unit 507 compares the determination result (left hand) of the user's hand with the information indicating the user's hand held by the state management unit 509, and determines whether they are different. If they are different (in the case of Yes), the process proceeds to step ST1119. If they are the same (in the case of No), the process returns to step ST1101.
　ステップＳＴ１１１９では、制御部５０７が、状態管理部５０９が保持しているユーザの持ち手を示す情報をユーザの持ち手の判定結果に基づき更新し、表示部１０１を左手用の表示画面に切り替える。 In step ST1119, the control unit 507 updates the information indicating the user's hand held by the state management unit 509 based on the determination result of the user's hand, and switches the display unit 101 to the display screen for the left hand.
　本実施の形態に係る携帯端末５００は、センサ部５０５により検出される携帯端末５００の所定の向きの角速度により、所定の向きの回転角を算出し、ユーザの持ち手（本実施の形態では片手を想定）を判定することができる。そのため、本実施の形態に係る携帯端末５００は、表示部１０１の表示をユーザの持ち手に応じて適用的に切り替えることができる。したがって、本実施の形態に係る携帯端末５００は、表示部１０１を介して、ユーザの持ち手に合わせて、ユーザにとって使い勝手の良い表示を行うことができる。さらに、本実施の形態に係る携帯端末５００は、筐体５５０内で備える角速度センサ５０５Ａにより所定の向きの角速度を検出する。そのため、検出の際、通常想定される利用状態として、ユーザの右手又は左手の掌が携帯端末５００の背面に向き、かつユーザがＺ軸プラス方向から表示面５２１を見ている状態では、ユーザが携帯端末５００のどの部分に指を置いて携帯端末５００を把持しても、角速度の検出に制約を受けない。 The portable terminal 500 according to the present embodiment calculates the rotation angle in the predetermined direction by the angular velocity in the predetermined direction of the portable terminal 500 detected by the sensor unit 505, and the user holds the hand (in the present embodiment, one hand). Can be determined. Therefore, portable terminal 500 according to the present embodiment can switch the display of display unit 101 according to the user's hand. Therefore, portable terminal 500 according to the present embodiment can perform convenient display for the user through the display unit 101 in accordance with the user's hand. Furthermore, portable terminal 500 according to the present embodiment detects an angular velocity in a predetermined direction by using angular velocity sensor 505A provided in housing 550. Therefore, at the time of detection, it is assumed that the palm of the user's right or left hand is directed to the back of portable terminal 500 and the user is looking at display surface 521 from the Z-axis plus direction. Regardless of where on the mobile terminal 500 the finger is placed to grip the mobile terminal 500, detection of the angular velocity is not restricted.
　さらに、本実施の形態に係る携帯端末５００では、通常想定される利用状態として、ユーザの右手の掌が携帯端末５００の背面に向き、かつユーザがＺ軸プラス方向から表示面５２１を見ている状態から「ロール角マイナス方向」に携帯端末５００を９０度回転させた場合、持ち手が右手と判定される。しかしながら、通常想定される利用状態では、左手が持ち手である場合には、ユーザがＺ軸プラス方向から表示面５２１を見ている状態から「ロール角マイナス方向」に携帯端末５００を９０度回転させることはできない。つまり、通常想定される利用状態では、左手の可動域の範囲外である。したがって、本実施の形態に係る携帯端末５００では、通常想定される利用状態において、ユーザがＺ軸プラス方向から表示面５２１を見ている状態から「ロール角マイナス方向」に携帯端末５００を９０度回転させた場合、持ち手の誤判定を確実に防止することができる。
　同様に、通常想定される利用状態として、ユーザの左手の掌が携帯端末５００の背面に向き、かつユーザがＺ軸プラス方向から表示面５２１を見ている状態から「ロール角プラス方向」に携帯端末５００を９０度回転させた場合、持ち手が左手と判定される。しかしながら、通常想定される利用状態では、右手が持ち手である場合には、ユーザがＺ軸プラス方向から表示面５２１を見ている状態から「ロール角プラス方向」に携帯端末５００を９０度回転させることはできない。つまり、通常想定される利用状態では、右手の可動域の範囲外である。したがって、本実施の形態に係る携帯端末５００では、通常想定される利用状態において、ユーザがＺ軸プラス方向から表示面５２１を見ている状態から「ロール角プラス方向」に携帯端末５００を９０度回転させた場合、持ち手の誤判定を確実に防止することができる。 Furthermore, in portable terminal 500 according to the present embodiment, the palm of the user's right hand is facing the back of portable terminal 500, and the user is looking at display surface 521 from the Z-axis plus direction When the portable terminal 500 is rotated 90 degrees in the “roll angle negative direction” from the state, the holding hand is determined to be the right hand. However, in the normally assumed use state, when the left hand is the holding hand, the portable terminal 500 is rotated 90 degrees in the “roll angle minus direction” from the state where the user is looking at the display surface 521 from the Z axis plus direction. I can not let it go. That is, in the normally assumed use state, it is out of the range of the movable range of the left hand. Therefore, in portable terminal 500 according to the present embodiment, in a normally assumed use state, portable terminal 500 is 90 degrees in the “roll angle negative direction” from the state where the user is looking at display surface 521 from the Z axis positive direction. In the case of rotation, it is possible to reliably prevent an erroneous determination of the holding hand.
Similarly, as a normally assumed use state, the palm of the left hand of the user is facing the back of the portable terminal 500, and the user is looking at the display surface 521 from the Z-axis plus direction. When the terminal 500 is rotated 90 degrees, the handle is determined to be the left hand. However, in the normally assumed use state, when the right hand is the holding hand, the portable terminal 500 is rotated 90 degrees in the “roll angle plus direction” from the state where the user is looking at the display surface 521 from the Z axis plus direction. I can not let it go. That is, in the normally assumed use state, it is out of the range of the movable range of the right hand. Therefore, in portable terminal 500 according to the present embodiment, in a normally assumed use state, portable terminal 500 is 90 degrees in the “roll angle plus direction” from the state where the user is looking at display surface 521 from the Z axis plus direction. In the case of rotation, it is possible to reliably prevent an erroneous determination of the holding hand.
　なお、本実施の形態に係る携帯端末５００は、「ロール角マイナス方向」に９０度である場合、ユーザの持ち手を右手であると判定するが、これに限らない。例えば、誤判定を防止するために、本実施の形態に係る携帯端末５００は、「ロール角マイナス方向」の回転角を９０度よりも大きい回転角の時に、ユーザの持ち手を右手であると判定しても良い。同様に、誤判定を防止するために、本実施の形態に係る携帯端末５００は、「ロール角プラス方向」の回転角を９０度よりも大きい回転角の時に、ユーザの持ち手を左手であると判定しても良い。また、この場合において、９０度よりも大きい回転角とする代わりに、９０度よりも大きい回転角または９０度以上の回転角としたり、所定角度よりも大きい回転角または所定角度以上の回転角としてもよい。 In the case where the mobile terminal 500 according to the present embodiment is 90 degrees in the “roll angle minus direction”, it is determined that the user's hand is the right hand, but the present invention is not limited thereto. For example, in order to prevent an erroneous determination, it is assumed that the portable terminal 500 according to the present embodiment is the right hand of the user's hand when the rotation angle in the “roll angle minus direction” is larger than 90 degrees. You may judge. Similarly, in order to prevent an erroneous determination, the portable terminal 500 according to the present embodiment is the left hand of the user's hand when the rotation angle in the “roll angle plus direction” is larger than 90 degrees. It may be determined that In this case, instead of setting the rotation angle larger than 90 degrees, the rotation angle larger than 90 degrees or the rotation angle larger than 90 degrees, or the rotation angle larger than the predetermined angle or the rotation angle larger than the predetermined angle It is also good.
［携帯端末５００の動き２］
　なお、持ち手判定部５３１は、図１２の矢印Ｗで示すように、（３）携帯端末５００が状態２から再び状態１へ戻る、つまり、携帯端末５００が「ロール角マイナス方向」に９０度回転した後に、「ロール角プラス方向」に９０度回転した場合に、持ち手判定部５３１は、ユーザの持ち手が右手であると判定しても良い。同様に、図１３の矢印Ｗ１に示すように、携帯端末５００が状態４から再び状態１へ戻る、つまり、携帯端末５００が「ロール角プラス方向」に９０度回転した後に、「ロール角マイナス方向」に９０度回転した場合に、持ち手判定部５３１は、ユーザの持ち手が左手であると判定しても良い。また、この場合において、９０度よりも大きい回転角とする代わりに、９０度よりも大きい回転角または９０度以上の回転角としたり、所定角度よりも大きい回転角または所定角度以上の回転角としてもよい。
　このように判定することで、（Ａ）初期状態（本実施の形態の場合、状態１）により、ユーザの意図に反する持ち手判定がなされてしまう場合や、（Ｂ）ユーザが手に持っていない状態で意図せず持ち手モードが切り替わってしまうような場合などの誤判定を防止することができる。例えば、右手の場合、表示面５２１を下向きにして置いてある携帯端末５００を左手で持って、表示面５２１をユーザ自身に向ける動作による誤判定や、携帯端末５００が、ユーザの所持する鞄の中で動いて「ロール角マイナス方向」に９０度回転したと誤判定される場合が考えられる。 [Movement 2 of Mobile Terminal 500]
As indicated by the arrow W in FIG. 12, (3) the portable terminal 500 returns from the state 2 back to the state 1 again, that is, the portable terminal 500 is 90 degrees in the "roll angle minus direction". When rotated by 90 degrees in the “roll angle plus direction” after rotation, the holding hand determination unit 531 may determine that the user's hand is the right hand. Similarly, as shown by arrow W1 in FIG. 13, portable terminal 500 returns from state 4 to state 1 again, that is, after portable terminal 500 is rotated by 90 degrees in the “roll angle plus direction”, “roll angle minus direction When rotating by 90 degrees, the holding hand determination unit 531 may determine that the user's hand is the left hand. In this case, instead of setting the rotation angle larger than 90 degrees, the rotation angle larger than 90 degrees or the rotation angle larger than 90 degrees, or the rotation angle larger than the predetermined angle or the rotation angle larger than the predetermined angle It is also good.
As a result of such determination, (A) the case where the hand is judged to be against the user's intention in the initial state (state 1 in the case of the present embodiment), or (B) the user holds the hand. It is possible to prevent an erroneous determination such as the case where the hand mode is switched unintentionally in the absence state. For example, in the case of the right hand, the mobile terminal 500 placed with the display surface 521 facing downward is held by the left hand and erroneous determination is made by the operation of pointing the display surface 521 to the user itself It is possible that there is a case in which it is determined that the wheel moves inward and is rotated 90 degrees in the "roll angle minus direction".
　なお、本実施の形態では、重力方向の影響を受けず、いかなる初期状態であっても、ユーザがＺ軸プラス方向から表示面５２１を見ている状態から「ロール角マイナス方向」に携帯端末５００を９０度回転させた場合、持ち手が右手と判定することができる。 In the present embodiment, mobile terminal 500 is not affected by the direction of gravity, and in any initial state, from the state where the user is looking at display surface 521 from the Z-axis positive direction, to portable terminal 500 in the “roll angle negative direction”. Can be determined to be the right hand.
　また、上記各実施の形態の説明に用いた各機能ブロックは、典型的には集積回路であるＬＳＩとして実現される。これらは個別に１チップ化されてもよいし、一部または全てを含むように１チップ化されてもよい。ここでは、ＬＳＩとしたが、集積度の違いにより、ＩＣ、システムＬＳＩ、スーパーＬＳＩ、ウルトラＬＳＩと呼称されることもある。 Each function block employed in the description of each of the aforementioned embodiments may typically be implemented as an LSI constituted by an integrated circuit. These may be individually made into one chip, or may be made into one chip so as to include some or all. Although an LSI is used here, it may be called an IC, a system LSI, a super LSI, or an ultra LSI depending on the degree of integration.
　また、集積回路化の手法はＬＳＩに限るものではなく、専用回路または汎用プロセッサで実現してもよい。ＬＳＩ製造後に、プログラムすることが可能なＦＰＧＡ（Ｆｉｅｌｄ　Ｐｒｏｇｒａｍｍａｂｌｅ　Ｇａｔｅ　Ａｒｒａｙ）や、ＬＳＩ内部の回路セルの接続や設定を再構成可能なリコンフィギュラブル・プロセッサーを利用してもよい。 Further, the method of circuit integration is not limited to LSI's, and implementation using dedicated circuitry or general purpose processors is also possible. After the LSI is manufactured, a programmable field programmable gate array (FPGA) may be used, or a reconfigurable processor may be used which can reconfigure connection and setting of circuit cells in the LSI.
　さらには、半導体技術の進歩または派生する別技術によりＬＳＩに置き換わる集積回路化の技術が登場すれば、当然、その技術を用いて機能ブロックの集積化を行ってもよい。バイオ技術の適用等が可能性としてありえる。 Furthermore, if integrated circuit technology comes out to replace LSI's as a result of the advancement of semiconductor technology or a derivative other technology, it is naturally also possible to carry out function block integration using this technology. The application of biotechnology etc. may be possible.
　本発明を詳細にまた特定の実施態様を参照して説明したが、本発明の精神と範囲を逸脱することなく様々な変更や修正を加えることができることは当業者にとって明らかである。 Although the invention has been described in detail and with reference to specific embodiments, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention.
　本出願は、２０１０年７月１４日出願の日本特許出願（特願２０１０－１５９８７８）、に基づくものであり、その内容はここに参照として取り込まれる。 This application is based on Japanese Patent Application (No. 2010-159878) filed on Jul. 14, 2010, the contents of which are incorporated herein by reference.
　本発明に係る携帯端末は、ユーザの持ち方や指の位置に制約を受けず、持ち手に応じて適用的に表示部の表示を切り替えることができる、という効果を有し、携帯電話機等として有用である。 The portable terminal according to the present invention has an effect that it is possible to switch the display of the display portion according to the handle without being restricted by the way the user holds or the position of the finger, and as a portable telephone etc. It is useful.
１００、３００、５００　　携帯端末
１０１　　　　　　　　　　表示部
１０３　　　　　　　　　　操作部
１０５、３０５、５０５　　センサ部
１０７、３０７、５０７　　制御部
１０９、３０９、５０９　　状態管理部
１２１、３２１、５２１　　表示面
１２３、３２３、５２３　　右側面
１２５、３２５、５２５　　左側面
１２７、３２７、５２７　　背面
１５０、３５０、５５０　　筐体
１３１、３３１、５３１　　持ち手判定部 100, 300, 500 mobile terminal 101 display unit 103 operation unit 105, 305, 505 sensor unit 107, 307, 507 control unit 109, 309, 509 state management unit 121, 321, 521 display surface 123, 323, 523 right side surface 125 , 325, 525 Left side surface 127, 327, 527 Rear surface 150, 350, 550 Housing 131, 331, 531 Holding hand judgment unit

Claims (8)

  1. 　表示を行う表示部と、
    　自端末の動きを検出するセンサ部と、
    　前記センサ部の検出した前記自端末の動きに基づき、持ち手を判定する持ち手判定部と、
    　前記持ち手判定部の判定結果に基づき、前記表示部の表示を持ち手に応じた表示に切り替える制御部と、
    　を備える携帯端末。     A display unit for displaying;
    A sensor unit that detects the movement of the own terminal;
    A handle determination unit that determines a handle based on the movement of the own terminal detected by the sensor unit;
    A control unit for switching the display of the display unit to a display according to the hand based on the determination result of the holding hand determination unit;
    Mobile terminal equipped with
  2. 　前記センサ部は、当該携帯端末の筐体内に設けられ、前記表示部は、当該携帯端末の筐体の一の面を構成する表示面に設けられ、
    　前記持ち手判定部は、
    　当該携帯端末の筐体の前後方向を軸として、当該携帯端末の筐体の左側面が前記表示面側から前記表示面と対向する背面側に向かう向きに所定角度以上回転する第１の動きを検出した場合、前記持ち手が右手であると判定し、
    　当該携帯端末の筐体の右側面が、前記表示面側から前記表示面と対向する背面側に向かう向きに所定角度以上回転する第２の動きを検出した場合、前記持ち手が左手であると判定する、
    　請求項１に記載の携帯端末。     The sensor unit is provided in a housing of the mobile terminal, and the display unit is provided on a display surface that constitutes one surface of the housing of the mobile terminal.
    The holding hand determination unit
    A first motion in which the left side surface of the casing of the portable terminal rotates from the display surface side toward the back side facing the display surface with a predetermined angle or more, with the longitudinal direction of the casing of the portable terminal as an axis If detected, it is determined that the handle is the right hand,
    When the right hand side surface of the casing of the portable terminal detects a second movement rotating from the display surface side toward the back side opposite to the display surface by a predetermined angle or more, the handle is the left hand judge,
    The portable terminal according to claim 1.
  3. 　前記センサ部は、重力加速度を検出できる１つの３軸加速度センサで構成される、
    　請求項２に記載の携帯端末。     The sensor unit is configured of one three-axis acceleration sensor capable of detecting a gravitational acceleration.
    The portable terminal according to claim 2.
  4. 　前記センサ部は、前記筐体の各側面の中央に設けられた２つの３軸加速度センサで構成される、
    　請求項２に記載の携帯端末。     The sensor unit is composed of two three-axis acceleration sensors provided at the center of each side surface of the housing.
    The portable terminal according to claim 2.
  5. 　前記センサ部は、前記筐体の側面の間の中央に設けられた１つの角速度を検出可能な加速度センサで構成される、
    　請求項２に記載の携帯端末。     The sensor unit is configured by an acceleration sensor that can detect one angular velocity provided at the center between the side surfaces of the housing.
    The portable terminal according to claim 2.
  6. 　前記持ち手判定部は、
    　前記第１の動きを検出した後、前記第１の動きとほぼ同じ軌道を逆方向に戻る動きを検出した場合、前記持ち手が右手であると判定し、
    　前記第２の動きを検出した後、前記第２の動きとほぼ同じ軌道を逆方向に戻る動きを検出した場合、前記持ち手が左手であると判定する、
    　請求項２から請求項５のいずれか１項に記載の携帯端末。     The holding hand determination unit
    After detecting the first movement, when detecting a movement that returns in the reverse direction substantially the same trajectory as the first movement, it is determined that the handle is the right hand,
    After detecting the second movement, when detecting a movement that returns in the reverse direction substantially the same trajectory as the second movement, it is determined that the handle is the left hand.
    The portable terminal according to any one of claims 2 to 5.
  7. 　センサ部により、自端末の動きを検出する検出ステップと
    　持ち手判定部により、前記センサ部の検出した前記自端末の動きに基づき、持ち手を判定する判定ステップと、
    　前記持ち手判定部の判定結果に基づき、当該携帯端末の表示部の表示を前記持ち手に応じた表示にする表示切り替えステップと、を備える表示制御方法。     A detection step of detecting the movement of the own terminal by the sensor unit; a judgment step of determining the holding hand based on the movement of the own terminal detected by the sensor unit;
    A display control method, comprising: a display switching step of displaying a display on a display unit of the portable terminal according to the hand on the basis of the judgment result of the hand holding judgment unit.
  8. 　コンピュータに、請求項７記載の各ステップを実行させるための表示制御プログラム。 The display control program for making a computer perform each step of Claim 7.
PCT/JP2011/002805 2010-07-14 2011-05-19 Mobile terminal, display control method, and display control program WO2012008077A1 (en)

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JP2014198164A (en) * 2013-03-29 2014-10-23 富士通株式会社 Measuring device, measurement region determination method, and program
JP6135257B2 (en) * 2013-04-04 2017-05-31 富士通株式会社 Terminal device and position detection program
JP6279275B2 (en) 2013-10-01 2018-02-14 シャープ株式会社 Mobile terminal and method for controlling mobile terminal
JP6384376B2 (en) * 2015-03-25 2018-09-05 沖電気工業株式会社 Information processing apparatus, program, portable terminal, and information processing system

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