JP2014127755A - Mobile terminal device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mobile terminal device capable of suppressing incorrect detection of a sensor.SOLUTION: A mobile phone 1 has: a cabinet 2 in which a display 3 is arranged in the front side; a radio wave transmission antenna 10 for detecting that the cabinet 2 is gripped; and a grip detection section 26 including an electric field detection antenna 11. The cabinet 2 has a cover 202, and the cover 202 has curved surface sections 202b, 202c in which the corner section is formed in a curved surface shape. The radio wave transmission antenna 10 is arranged to the curved surface section 202b of the cover 202, and the electric field detection antenna 11 is arranged to the curved surface section 202c of the cover 202.

Description

  The present invention relates to a mobile terminal device such as a mobile phone, a PDA (Personal Digital Assistant), a tablet PC (Tablet PC), and an electronic book terminal.

  2. Description of the Related Art Conventionally, a mobile phone is known in which a touch panel is provided on a display surface and various application programs (hereinafter simply referred to as “applications”) are executed based on a user's touch operation on the display surface. Such a mobile phone can be configured to perform control processing using various sensing technologies. For example, a sensor for detecting a gripping position on the user's mobile phone is disposed (see, for example, Patent Document 1).

JP 2010-154090 A

  In the above mobile phone, the sensor is arranged on the outer surface (side surface, back surface) of the mobile phone in order to detect that the user has gripped the mobile phone. As described above, when the sensor for detecting gripping on the mobile phone is arranged on the outer surface of the mobile phone, the sensor reacts to an object other than the human body and erroneously detects that the user has gripped the mobile phone. There is concern. For example, in the case of an electric field detection type sensor, there is a concern that a user may erroneously detect that a user has gripped a mobile phone because a conductive object other than a human body is interposed between the electric field generation unit and the electric field detection unit. .

  Then, an object of this invention is to provide the portable terminal device which can suppress the misdetection of a sensor.

  A mobile terminal device according to a main aspect of the present invention includes a front surface, a back surface, a housing having a plurality of side surfaces, a display unit provided on the front surface, and a grip detection unit for detecting that the housing is gripped. And comprising. In the mobile terminal device according to this aspect, a corner formed by the back surface and the first side surface of the casing is formed in a curved surface shape, and the grip detection unit is arranged in the corner.

  In the mobile terminal device according to this aspect, the casing may be configured to have a left side, a right side, an upper side, and a lower side. In this case, the grip detection unit may be configured to be arranged at the corner at an end portion on the lower side surface of at least one side surface of the right side surface and the left side surface.

  In the mobile terminal device according to this aspect, the grip detection unit may be configured to be disposed across the first side surface of the casing and the second side surface connected to the first side surface.

  In the mobile terminal device according to this aspect, a radio wave transmitting / receiving antenna that transmits and receives radio waves is disposed on the second side surface side of the housing, and the grip detection unit is configured to transmit the radio wave in a direction perpendicular to the second side surface. It can be set as the structure arrange | positioned in the range of the said 2nd side surface which does not overlap with a transmission / reception antenna.

In the mobile terminal device according to this aspect, the grip detection unit is arranged at the corner so as to be separated from a flat surface connected to the corner on the back by a predetermined interval in a direction perpendicular to the flat surface. It can be set as such.

  In the mobile terminal device according to this aspect, the housing may be configured to include a housing unit that houses the display unit and a cover that protects the housing unit from the outside. In this case, the grip detection unit includes a first antenna that transmits a radio wave, and a second antenna that detects an electric field generated by the radio wave transmitted by the first antenna, and the first antenna and the The second antenna may be configured to be attached to the cover.

  In such a configuration, the housing portion includes a screw for screwing a member disposed in the housing portion, and the screw disposed around the grip detection portion is a non-magnetic material. It can be configured.

  ADVANTAGE OF THE INVENTION According to this invention, the portable terminal device which can suppress the misdetection of a sensor can be provided.

  The effects and significance of the present invention will become more apparent from the following description of embodiments. However, the following embodiment is merely an example when the present invention is implemented, and the present invention is not limited to what is described in the following embodiment.

It is a figure which shows the structure of the mobile telephone based on Embodiment. It is a block diagram which shows the whole structure of the mobile telephone based on Embodiment. It is a figure which shows the structure of the mobile telephone based on Embodiment. It is a figure which shows the structure of the mobile telephone based on Embodiment. It is a figure which shows the structure of the mobile telephone based on Embodiment. It is a figure which shows the state which gripped the mobile telephone based on Embodiment. It is a figure which shows the structure of the mobile telephone based on the example of a change. It is a figure which shows the structure of the mobile telephone based on the example of a change. It is a figure which shows the structure of the mobile telephone based on the example of a change. It is a flowchart which shows an incoming call control process based on embodiment. It is a flowchart which shows an incoming call control process based on embodiment. It is a flowchart which shows an incoming call control process based on embodiment. It is a figure which shows the example of a screen display of the display of a mobile telephone based on Embodiment. It is a figure which shows the example of a screen display of the display of a mobile telephone based on Embodiment. 10 is a flowchart showing incoming call control processing according to a first modification. It is a figure which shows the example of a screen display of the display of a mobile telephone based on the example 1 of a change. 10 is a flowchart showing incoming call control processing according to a second modification. It is a figure which shows the example of a screen display of the display of a mobile telephone based on the example 2 of a change. 10 is a flowchart showing incoming call control processing according to a third modification. 10 is a flowchart showing incoming call control processing according to a modification example 4; It is a figure which shows the example of a screen display of the display of a mobile telephone based on the example 4 of a change.

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

  FIGS. 1A, 1B, and 1C are a front view, a rear view, and a right side view of the mobile phone 1, respectively. Hereinafter, for convenience of explanation, as shown in FIGS. 1A to 1C, the longitudinal direction of the cabinet 2 is defined as the vertical direction, and the short direction of the cabinet 2 is defined as the horizontal direction.

  As shown in FIG. 1, a mobile phone 1 includes a cabinet 2, a display 3, a front touch panel 4, a microphone 5, a telephone speaker 6, a back touch panel 7, an external speaker 8, a camera 9, and radio waves. A transmission antenna 10, electric field detection antennas 11 and 12, and a radio wave transmission / reception antenna 13 are provided.

  The cabinet 2 has a substantially rectangular outline when viewed from the front. A display 3 is arranged in front of the cabinet 2. Various images (screens) are displayed on the display 3. The display 3 is a liquid crystal display, for example. The display 3 may be another type of display such as an organic EL display. Further, a front touch panel 4 is disposed so as to cover the display 3. The front touch panel 4 has a feature of a transparent sheet. As the front touch panel 4, various types of touch panels such as a capacitance type, an ultrasonic type, a pressure-sensitive type, a resistance film type, and a light detection type can be used.

  Inside the cabinet 2, a microphone 5 is disposed at the lower end, and a call speaker 6 is disposed at the upper end. Audio is input to the microphone 5 through a microphone hole 5 a formed in the front of the cabinet 2. The microphone 5 generates an electrical signal corresponding to the input sound. The call speaker 6 outputs sound. The output sound is emitted to the outside through an output hole 6a formed in the front surface of the cabinet 2. During a call, the received voice received from the communication destination device (such as a mobile phone) is output from the call speaker 6, and the uttered voice uttered by the user is input to the microphone 5. In the present embodiment, “sound” includes voice (including spoken voice and received voice), notification sound, and the like.

  A recess 2a having a substantially rectangular outline is formed on the back surface of the cabinet 2, and a back touch panel 7 is disposed on the back surface of the recess 2a. Similar to the front touch panel 4, the back touch panel 7 is formed in a transparent sheet shape. As the back touch panel 7, various types of touch panels such as a capacitance type, an ultrasonic type, a pressure sensitive type, a resistance film type, and a light detection type can be used.

  An external speaker 8 is disposed inside the cabinet 2. An output hole 8 a corresponding to the external speaker 8 is formed on the back surface of the cabinet 2. The sound output from the external speaker 8 is emitted to the outside through the output hole 8a.

  A camera 9 is arranged inside the cabinet 2. A lens window 9 a is provided on the rear surface of the cabinet 2, and an image of the subject is taken into the camera 9 through the lens window 9 a.

Inside the cabinet 2, a radio wave transmitting antenna 10 is disposed at a position near the right side surface, and an electric field detection antenna 11 is disposed at a position near the left side surface. The radio wave transmitting antenna 10 generates a weak radio wave at the first cycle timing. The electric field generated by the radio wave transmitted from the radio wave transmission antenna 10 is not detected by the electric field detection antenna 11 when the right side surface and the left side surface of the cabinet 2 are not connected by a medium that conducts the electric field. When the user grips the left and right side surfaces of the cabinet 2, the gripped hand serves as a medium, and the electric field generated by the radio wave transmitted from the radio wave transmission antenna 10 is transmitted toward the electric field detection antenna 11. An electric field is detected. The electric field detection antenna 11 outputs a detection signal to the control unit 21 to be described later when an electric field is detected. The electric field detection antenna 11 may output the first detection signal to the control unit 21 while detecting electrolysis. The control unit 21 may determine that the electric field is detected while receiving the first detection signal. The electric field detection antenna 11 may output the second detection signal to the control unit 21 when detecting the electric field, and then output the third detection signal to the control unit 21 when the electric field is no longer detected. . The control unit 21
When the second detection signal is received, it may be determined that the electric field has been detected, and after that, when the third detection signal is received, it may be determined that the detection of the electric field has ended.

  Inside the cabinet 2, an electric field detection antenna 12 is disposed in the vicinity of the call speaker 6. The radio wave transmission antenna 10 generates a weak radio wave at a second cycle timing different from the first cycle timing. The electric field generated by the radio wave transmitted from the radio wave transmission antenna 10 is not detected by the electric field detection antenna 12 in a state where the upper end portion on the front side of the cabinet 2 and the right side surface are not connected by a medium that conducts the electric field. When the user grips the cabinet 2 and brings the call speaker 6 close to the user's ear, the electric field generated by the radio wave transmitted from the radio wave transmitting antenna 10 is generated by the human body from the hand to the ear. 12, and the electric field is detected by the electric field detection antenna 12. The electric field detection antenna 12 outputs a detection signal to the control unit 21 described later when an electric field is detected.

  FIG. 2 is a block diagram showing the overall configuration of the mobile phone 1. The mobile phone 1 includes a control unit 21, a storage unit 22, an image output unit 23, a front touch detection unit 24, a back touch detection unit 25, a grip detection unit 26, a proximity detection unit 27, and a voice input unit. 28, an audio output unit 29, an audio processing unit 30, an imaging unit 31, a key input unit 32, and a communication unit 33.

  The storage unit 22 includes a ROM, a RAM, an external memory, and the like. Various programs are stored in the storage unit 22. The programs stored in the storage unit 22 include various applications (for example, telephone, e-mail, phone book, map, game, schedule management, etc.) in addition to a control program for controlling each unit of the mobile phone 1. The program is stored in the storage unit 22 by the manufacturer when the mobile phone 1 is manufactured, and is also stored in the storage unit 22 by the user via a storage medium such as a communication network or a memory card.

  The storage unit 22 includes a working area (not shown) that stores data that is temporarily used or generated when the program is executed.

  The control unit 21 includes a CPU and the like. In accordance with the program, the control unit 21 is configured according to a program for each unit (control unit 21, storage unit 22, image output unit 23, front touch detection unit 24, back touch detection unit 25, and grip detection unit 26. The proximity detection unit 27, the audio input unit 28, the audio output unit 29, the audio processing unit 30, the photographing unit 31, the key input unit 32, the communication unit 33, and the like.

  The image output unit 23 includes the display 3 shown in FIG. The image output unit 23 displays an image (screen) on the display 3 based on the control signal and the image signal from the control unit 21.

  The front touch detection unit 24 includes the front touch panel 4 shown in FIG. The front touch detection unit 24 detects a touch operation by the user on the display 3 shown in FIG. That is, the front touch detection unit 24 detects a position (touch position) on the display 3 touched by a finger, and outputs a position signal corresponding to the detected touch position to the control unit 21. As a result, the user can feel as if the mobile phone 1 is being controlled by touching the display 3 with a finger.

The user can perform various touch operations by touching the display 3 with a finger. Examples of the touch operation include tap operation, flick operation, slide operation, and long tap operation. The tap operation is an operation of releasing the finger from the display 3 in a short time after bringing the finger into contact with the display 3. The flick operation is an operation of flipping the display 3 with a finger in an arbitrary direction. The slide operation is an operation of moving the display 3 in an arbitrary direction while keeping the finger in contact with the display 3. The flick operation and the slide operation are touch operations that involve movement of the touch position. The long tap operation is an operation of keeping the contact for a while after bringing the finger into contact with the display 3 and releasing the finger from the display 3.

  The touch operation will be described more specifically. For example, after the touch position on the display 3 is detected by the front touch detection unit 24, when the touch position is not detected within a predetermined first time, that is, when there is an operation of releasing the finger from the display 3, The control unit 21 determines that the touch operation is a tap operation. When the touch position on the display 3 is detected by the front touch detection unit 24 and the touch position is no longer detected after the touch position has moved by a predetermined first distance within a predetermined second time, the control unit 21 The touch operation is determined as a flick operation. When the touch position on the display 3 is detected by the front touch detection unit 24 and the touch position moves by a predetermined second distance or more, the control unit 21 determines that the touch operation is a slide operation. After the touch position on the display 3 is detected by the front touch detection unit 24, the control unit 21 performs the touch operation when the touch position is continuously detected for a predetermined third time or more, and then the touch position is not detected. It is determined as a long tap operation.

  The back touch detection unit 25 includes the back touch panel 7 shown in FIG. The back touch detection unit 25 detects, by the back touch panel 7, a user's touch operation on the recess 2a shown in FIG. That is, the back touch detection unit 25 detects a position (touch position) on the concave portion 2 a touched by a finger, and outputs a position signal corresponding to the detected touch position to the control unit 21.

  The user may be able to perform a touch operation similar to the touch operation on the front touch panel 4 by touching the recess 2a with a finger. Further, the user may control the operation of the mobile phone 1 through a touch operation on the back touch panel 7.

  The grip detection unit 26 includes the radio wave transmission antenna 10, the radio wave transmission circuit unit 10 a illustrated in FIG. 1, the electric field detection antenna 11 illustrated in FIG. 1, the electric field detection circuit unit 11 a, and the electric field detection control unit 14. The proximity detection unit 27 includes the radio wave transmission antenna 10, the radio wave transmission circuit unit 10 a illustrated in FIG. 1, the electric field detection antenna 12 illustrated in FIG. 1, the electric field detection circuit unit 12 a, and the electric field detection control unit 14. . The grip detection unit 26 and the proximity detection unit 27 share the radio wave transmission antenna 10 and the radio wave transmission circuit unit 10a by time division control.

  The electric field detection control unit 14 drives the radio wave transmission circuit unit 10 a according to a command from the control unit 21. The radio wave transmission circuit unit 10a includes a D / A conversion circuit, a pulse generation circuit, and the like, and transmits a radio wave for detecting the proximity of the user's ear and a signal for transmitting a radio wave for detecting the user's grip. Generate a signal for The radio wave transmission antenna 10 transmits a weak radio wave for detecting a user's grip at the first cycle timing in accordance with a signal from the radio wave transmission circuit unit 10a. The radio wave transmission antenna 10 transmits a weak radio wave for detecting the proximity of the user's ear at a second cycle timing different from the first cycle timing in accordance with a signal from the radio wave transmission circuit unit 10a. .

  When detecting the electric field, the electric field detection antenna 11 transmits a detection signal to the electric field detection circuit unit 11a. The electric field detection circuit unit 11a includes an A / D conversion circuit, a pulse generation circuit, and the like. The electric field detection circuit unit 11 a captures a detection signal at a timing corresponding to the first cycle timing and transmits the detection signal to the electric field detection control unit 14. When the electric field detection control unit 14 detects a detection signal from the electric field detection circuit unit 11a at a timing corresponding to the first cycle timing, the electric field detection control unit 14 outputs a detection signal that tells that the user's grip has been detected to the control unit 21.

  When the electric field detection antenna 12 detects an electric field, the electric field detection antenna 12 transmits a detection signal to the electric field detection circuit unit 12a. The electric field detection circuit unit 12a includes an A / D conversion circuit, a pulse generation circuit, and the like. The electric field detection circuit unit 12 a captures a detection signal at a timing corresponding to the second cycle timing, and transmits the detection signal to the electric field detection control unit 14. When the electric field detection control unit 14 detects a detection signal from the electric field detection circuit unit 12a at a timing corresponding to the second cycle timing, the electric field detection control unit 14 outputs a detection signal that reports that the proximity of the user's ear has been detected to the control unit 21.

  The voice input unit 28 includes the microphone 5 and the like. The voice input unit 28 outputs an electrical signal from the microphone 5 to the voice processing unit 30.

  The audio output unit 29 includes a call speaker 6 and an external speaker 8. The sound output unit 29 receives an electrical signal from the sound processing unit 30 and outputs sound (sound, notification sound, etc.) from the call speaker 6 or the external speaker 8.

  The audio processing unit 30 performs A / D conversion or the like on the electrical signal from the audio input unit 28 and outputs the converted digital audio signal to the control unit 21. The audio processing unit 30 performs decoding processing, D / A conversion, and the like on the digital audio signal from the control unit 21, and outputs the converted electric signal to the audio output unit 29.

  The imaging unit 31 includes the camera 9 including the CMOS image sensor shown in FIG. 1, an imaging control circuit, and the like. The imaging unit 31 performs various types of image processing on the image data of the image captured by the camera 9 and outputs the image data after the image processing to the control unit 21.

  The key input unit 32 responds to the pressed hard key when various hard keys (not shown) such as a power key for turning on the mobile phone 1 are pressed. The signal is output to the control unit 21.

  The communication unit 33 includes a circuit for converting a signal for performing a call or communication, the radio wave transmitting / receiving antenna 13 shown in FIG. The communication unit 33 converts a call or communication signal input from the control unit 21 into a radio signal, and the converted radio signal is transmitted to the base station or other communication device via the radio wave transmitting / receiving antenna 13. Send to the destination. Further, the communication unit 33 converts the radio signal received via the radio wave transmitting / receiving antenna 13 into a signal in a format that can be used by the control unit 21, and outputs the converted signal to the control unit 21.

  The mobile phone 1 according to the present embodiment has a control function corresponding to a grip operation on the mobile phone 1 by the user and a structure suitable for detecting a grip on the mobile phone 1 by the user.

<Structure>
First, a specific structural example of the mobile phone 1 suitable for detecting a grip will be described. In the present embodiment, only the structure related to the grip detection unit 26 will be described in detail, and detailed description of other structures will be omitted.

  FIG. 3A is a perspective view showing the main body 201 of the cabinet 2, and FIG. 3B is a perspective view showing the cover 202 of the cabinet 2.

  The cabinet 2 includes a main body portion 201 and a cover 202. The main body 201 has a circuit board 301 including the control unit 21 and the like shown in FIG. Curved surface portions 201 a and 201 d are formed on the left and right end portions of the back surface of the main body portion 201.

  A concave portion 201b is formed at the lower end of the curved surface portion 201a. An opening 201c is formed in the upper part of the recess 201b so that the contact spring 301a of the circuit board 301 faces the outside. Similarly, a recess 201e is formed at the lower end of the curved surface portion 201d. An opening 201f is formed in the upper part of the recess 201e so that the contact spring 301b of the circuit board 301 faces the outside. A recess 201g is formed in the lower portion of the main body 201. An opening 201h is formed at the left end of the recess 201g so that the terminal 301c of the circuit board 301 faces the outside.

  In the main body 201, a component such as a circuit board 301 and a rear frame are screwed to the front frame with a plurality of screws, screws 201i and 201j around the recess 201b, screws 201k around the recess 201e, 201l is arranged. The screws 201i to 201l are formed of a nonmagnetic member such as a resin material or Inconel.

  In addition, the main body 201 is provided with a camera 9, a battery, a recess for arranging antennas for various wireless communications, and hard keys such as a power key and a shutter button.

  The cover 202 has a bottom surface 202 a and a shape that covers the back surface of the main body 201. The cover 202 has a curved surface portion 202 b formed at a position facing the curved surface portion 201 a of the main body portion 201, and a curved surface portion 202 c formed at a position facing the curved surface portion 201 d of the main body portion 201. The lower edge portion 202d and the upper edge portion of the cover 202 have a rib shape that is one step higher than the bottom surface 202a.

  An FPC (Flexible Printed Circuits) 203 is attached to a position of the curved surface portion 202b facing the recess 201b. In the FPC 203, a circuit pattern of the electric field detection antenna 11 is arranged. A connection portion 203 a to the circuit board 301 is formed at the upper end of the FPC 203. A terminal 203b for electrically connecting the circuit pattern of the radio wave transmitting antenna 10 of the FPC 203 and the circuit board 301 via the contact spring 301a is formed in the connecting portion 203a.

  Similarly, the FPC 204 is affixed to the position of the curved surface portion 202b facing the concave portion 201e of the main body portion 201. The circuit pattern of the radio wave transmitting antenna 10 is arranged on the FPC 204. A connection portion 204 a to the circuit board 301 is formed at the upper end of the FPC 204. A terminal 204b for electrically connecting the circuit pattern of the electric field detection antenna 11 of the FPC 204 and the circuit board 301 via the contact spring 301b is formed in the connection portion 204a.

  On the bottom surface 202 a of the cover 202, a back touch panel 7, an antenna for various wireless communications, a rib for reinforcement, a nail for stopping the cover 202 on the main body 201, and the like are formed.

  FIG. 4A is a diagram illustrating a positional relationship between the FPCs 203 and 204 when the cover 202 is attached to the main body 201. 4B is a partially enlarged view around the FPC 204, and FIG. 4C is a partially enlarged view around the FPC 203. FIG. In FIG. 4A, the cover 202 is not shown for convenience.

With reference to FIG. 4A, when the cover 202 is attached, the FPC 203 is disposed at the position of the recess 201 b of the main body 201, and the FPC 204 is disposed at the position of the recess 201 e of the main body 201. At this time, the terminal 203b (see FIG. 3B) of the FPC 203 contacts the contact spring 301a (see FIG. 3A) of the circuit board 301. A terminal 204b (see FIG. 3B) of the FPC 204 abuts on a contact spring 301b (see FIG. 3A) of the circuit board 301. As a result, the circuit pattern of the radio wave transmitting antenna 10 disposed on the FPC 204 and the circuit board 301 and the circuit pattern of the electric field detection antenna 11 disposed on the FPC 203 and the circuit board 301 are electrically connected.

  FIG. 5A is a rear view of the mobile phone 1 seen through the cover 202.

  In the rear view, the FPC 204 provided with the radio wave transmitting antenna 10 is arranged at the lower right end portion of the mobile phone 1. The FPC 203 on which the electric field detection antenna 11 is arranged is arranged at the lower left end of the mobile phone 1. Since the screws 201i to 201l arranged in the vicinity of the FPCs 203 and 204 are made of a non-magnetic member, the influence on the electric field generated by the radio wave transmitted from the radio wave transmitting antenna 10 of the FPC 204 can be suppressed.

  FIG.5 (b) is a figure which shows the right end part periphery of AA sectional drawing of Fig.5 (a). FIG.5 (c) is a figure which shows the right end part periphery of AA sectional drawing of a comparative example.

  In the comparative example of FIG. 5C, curved portions 202b and 202c are not provided on the left and right ends of the cover 202 ′, but vertical corners are formed, and an FPC 204 ′ in which the radio wave transmitting antenna 10 is disposed on the bottom surface 202a is disposed. Has been. In this case, for example, when the mobile phone 1 is installed on a conductive flat surface such as a metal desk, the electric field generated by the radio wave transmitted from the radio wave transmitting antenna 10 is detected via the metal desk. There is a possibility that the control unit 21 may be erroneously detected when the user grips the mobile phone 1 by being transmitted to the antenna 11.

  In the present embodiment, as shown in FIG. 5B, the FPC 204 provided with the radio wave transmitting antenna 10 is attached to the curved surface portion 202c of the cover 202. The FPC 204 gradually moves away from a plane such as a desk. Therefore, compared to the comparative example, it is possible to suppress erroneous grip detection that may occur when the mobile phone 1 is installed on a conductive flat surface.

  Further, in the present embodiment, as shown in FIG. 5B, the FPC 204 provided with the radio wave transmitting antenna 10 is arranged such that the rear end portion is separated from the bottom surface 202a of the cover 202 by a predetermined distance C. Therefore, it is possible to further suppress erroneous grip detection that occurs during installation.

  Although not shown, the FPC 203 on which the electric field detection antenna 11 is disposed is also disposed on the curved surface portion 202b of the cover 202, and the rear end portion is separated from the bottom surface 202a of the cover 202 by a predetermined distance C, similarly to the FPC 204. Has been placed. Therefore, erroneous detection of the grip that occurs during installation can be suppressed.

  In this embodiment, the FPC 204 provided with the radio wave transmitting antenna 10 and the FPC 203 provided with the electric field detection antenna 11 are arranged at a predetermined distance C from the bottom surface 202a of the cover 202. It may be arranged so as to cover a part of the bottom surface 202a. Even in this case, since the FPCs 203 and 204 are disposed on the curved surface portions 202c and 202b, the distance from the bottom surface 202a of the cover 202 increases as the distance from the center of the mobile phone 1 increases. Therefore, it is possible to suppress erroneous grip detection that occurs during installation, as compared with the comparative example shown in FIG. In order to effectively prevent erroneous grip detection that occurs during installation, it is desirable that the FPCs 203 and 204 be arranged apart from the bottom surface 202a of the cover 202 by a predetermined distance C.

FIG. 6A is a front view showing a state where the user grips the mobile phone 1 with the right hand, and FIG.
b) is a rear view showing a state in which the user grips the mobile phone 1 with the right hand. 6C is a cross-sectional view of the periphery of the right end portion of the cellular phone 1 gripped by the user's right hand, and FIG. 6D is a right end portion of the comparative example in which the user grips the cellular phone 1 with the right hand. FIG.

  When the user grips the mobile phone 1, the FPC 204 including the radio wave transmitting antenna 10 contacts the base of the thumb of the right hand via the curved surface portion 202 b of the cover 202. Further, the FPC 203 including the electric field detection antenna 11 comes into contact with the vicinity of the second joint from the first joint of the little finger, ring finger, and middle finger of the right hand via the curved surface portion 202b of the cover 202.

  The electric field generated by the radio wave transmitted from the radio wave transmission antenna 10 is transmitted to the electric field detection antenna 11, and the electric field detection antenna 11 detects the electric field. Thereby, the detection signal which tells the control part 21 that the grip was detected is output.

  In the comparative example shown in FIG. 6D, since the curved surface portions 202b and 202c are not provided on the cover 202 ′ and a vertical corner is formed, the corner contacts the base of the thumb of the right hand of the user, and the cover 202 The back surface and side surface of 'do not contact the right hand, and a large gap is generated between the FPC 204 ′ including the radio wave transmitting antenna 10 and the right hand. On the other hand, in the present embodiment, since the cover 202 is provided with the curved surface portions 202b and 202c, the user can bring the right hand into contact with the cover 202 without a substantial gap. Accordingly, the user can bring the radio wave transmission antenna 10 and the electric field detection antenna 11 disposed on the curved surface portions 202c and 202b of the cover 202 closer to the right hand. Therefore, the clip detection unit 26 can properly detect the user's grip on the mobile phone 1.

  Also, a right-handed user usually grips the mobile phone 1 by touching the vicinity of the lower right corner of the mobile phone 1 near the base of the thumb of the right hand. Accordingly, as shown in FIG. 6A, by providing the radio wave transmission antenna 10 and the electric field detection antenna 11 at the lower end portion of the mobile phone 1, the user can more reliably place the radio wave transmission antenna 10 and the electric field detection antenna 11 on the right hand. Can approach. Thereby, a user's grip can be detected more appropriately.

  As described above, according to the present embodiment, since the radio wave transmission antenna 10 and the electric field detection antenna 11 of the grip detection unit 26 are arranged on the curved surface portions 202b and 202c of the cover 202, erroneous detection of grips that occurs during installation is prevented. be able to. Furthermore, the user's hand can be brought into contact with the cover 202 without a substantial gap, and the user's grip can be detected appropriately.

  Further, according to the present embodiment, the FPC 204 provided with the radio wave transmission antenna 10 and the FPC 203 provided with the electric field detection antenna 11 are arranged apart from the bottom surface 202a of the cover 202 by a predetermined distance C. Furthermore, it is possible to suppress erroneous grip detection that occurs during installation.

  In addition, according to the present embodiment, the radio wave transmission antenna 10 and the electric field detection antenna 11 are arranged at the lower end portion of the mobile phone 1 that is easily touched by a palm when the user grips the mobile phone 1. A user's grip can be detected appropriately.

  In addition, according to the present embodiment, the screws 201i to 201l arranged in the vicinity of the radio wave transmission antenna 10 and the electric field detection antenna 11 are made of a nonmagnetic member. The influence on the electric field generated by can be suppressed.

<Example of structural changes>
In the mobile phone 1 of the above embodiment, the FPCs 203 and 204 are respectively connected to the cover 20.
2, the FPC 203 is arranged so as to cover the curved surface portion 202c and the lower edge portion 202d of the cover 202, as shown in FIG. Is arranged so as to cover the curved surface portion 202b and the lower edge portion 202d of the cover 202.

  FIG. 7 is a diagram illustrating a positional relationship between the FPCs 203 and 204 when the cover 202 is attached to the main body 201. In FIG. 7, the cover 202 is not shown for convenience.

  Bending portions 203c and 204c are formed at the lower ends of the FPCs 203 and 204, respectively. The bent portions 203 c and 204 c are attached to the lower edge portion 202 d of the cover 202. Therefore, the radio wave transmission antenna 10 and the electric field detection antenna 11 are arranged not only on the curved surface portions 202b and 202c of the cover 202 but also on the left and right ends of the lower edge portion 202d.

  Here, as shown in FIG. 6A, when the user grips the mobile phone 1 with the right hand, the lower portion of the cover 202 is likely to come into contact with the palm of the right hand. Therefore, the grip of the user can be detected more reliably by arranging the radio wave transmission antenna 10 and the electric field detection antenna 11 so as to cover the lower edge portion 202d of the cover 202 as in this modified example.

  FIG. 8A is a rear view of the mobile phone 1 seen through the cover 202. FIG. 8B is a partially enlarged view of the vicinity of the lower left end portion of the mobile phone 1.

  In this modified example, the bent portions 203 c and 204 c of the FPCs 203 and 204 are arranged so as not to overlap the range of the long side L of the radio wave transmitting / receiving antenna 13. That is, there is a predetermined distance D between the left end portion of the radio wave transmitting / receiving antenna 13 and the bent portion 203 c of the FPC 203. Similarly, since there is a predetermined interval between the right end portion of the radio wave transmission / reception antenna 13 and the bent portion 204c of the FPC 204, the influence of the radio wave transmission antenna 10 and the electric field detection antenna 11 on the radio wave transmission / reception antenna 13 can be suppressed.

  Thus, with the configuration of this modification, it is possible to improve the sensitivity of detecting the user's grip without deteriorating the transmission / reception power of radio waves for making a call.

  In addition, the shape, arrangement | positioning, etc. of the radio wave transmission antenna 10 and the electric field detection antenna 11 of the said embodiment and modification are examples, and various other changes are possible.

  FIG. 9A is a schematic diagram showing the outer shape of the cabinet 2. FIGS. 9B and 9C are diagrams illustrating the boundary position of the curved surface portion of the cabinet 2. 9A to 9C show the X axis, the Y axis, and the Z axis along with the vertical and horizontal directions. The right direction corresponds to the X-axis positive direction, the upward direction corresponds to the Y-axis positive direction, and the rear direction corresponds to the Z-axis positive direction.

  In the cabinet 2, the corners of the XY plane and the XZ plane are curved surfaces. In order to explain an arrangement example of the radio wave transmission antenna 10 and the electric field detection antenna 11, for convenience, the side surface of the cabinet 2 where the radio wave transmission antenna 10 or the electric field detection antenna 11 is arranged is S1, the bottom surface of the cabinet 2 is S2, and the back surface of the cabinet 2 Is S3.

  Here, as shown in FIG. 9B, the boundary between the side surface S1 and the bottom surface S2 in the XY plane is the extension line in the X-axis direction of the cabinet 2 and the extension in the Y-axis direction among the perpendicular lines B1 of the tangent line A1 of the curved surface. A perpendicular line B1 passing through the line intersection P2 is defined as a point P1 where the curved surface intersects.

As shown in FIG. 9C, the boundary between the side surface S1 and the back surface S3 in the XZ plane is an extension line in the X-axis direction of the cabinet 2 and an extension line in the Z-axis direction among the perpendicular lines B2 of the tangent line A2 of the curved surface. A perpendicular line B2 passing through the intersection point P4 is a point P3 where the curved surface intersects.

  As described above, it is desirable that the radio wave transmission antenna 10 or the electric field detection antenna 11 is arranged so as to include at least the side surface S1 of the cabinet 2 formed in a curved shape.

  Further, the radio wave transmitting antenna 10 or the electric field detection antenna 11 is desirably arranged at a corner including the lower side surface S1 that is easily touched during gripping, and is further arranged so as to straddle the side surface S1 and the bottom surface S2. desirable. In this case, as shown in FIG. 8A, the bottom surface S2 is desirably arranged so as not to overlap the long side L of the radio wave transmitting / receiving antenna 13.

  Further, as shown in FIG. 6A, when the user grips the mobile phone 1 with the right hand, the back surface of the cover 202 also easily comes into contact with the palm of the right hand. Therefore, from the viewpoint of increasing the sensitivity for detecting the user's grip, the radio wave transmission antenna 10 and the electric field detection antenna 11 are arranged so as to cover the side surface S1 and the back surface S3, or the side surface S1, the bottom surface S2, and the back surface S3. desirable. In this case, as shown in FIG. 5 (b), the back surface S3 is more preferably disposed at a predetermined distance C from the bottom surface 202a of the cover 202 in order to suppress erroneous detection of the grip that occurs during installation. .

  As long as any one of the above conditions is satisfied, the location, size, shape, and the like of the radio wave transmission antenna 10 and the electric field detection antenna 11 can be changed as appropriate.

  For example, although the radio wave transmission antenna 10 and the electric field detection antenna 11 are affixed to the cover 202 in the above-described embodiments and modifications, they may be affixed to the main body 201 side.

  Further, in the above-described embodiment and modification, the radio wave transmission antenna 10 and the electric field detection antenna 11 are arranged at the lower part of the mobile phone 1, but may be arranged to include the upper part of the mobile phone 1.

  Moreover, in the said embodiment and modification, although the radio wave transmission antenna 10 was arrange | positioned on the right side for right-handed users, you may arrange | position on the left side for left-handed users.

  In the embodiment and the modification described above, the radio wave transmission antenna 10 and the electric field detection antenna 11 are arranged on the curved surface portions 202b and 202c of the cover 202, respectively, but either the radio wave transmission antenna 10 or the electric field detection antenna 11 is used. Only the curved surface portion 202b (202c) may be disposed.

  Moreover, in the said embodiment and modification, although the radio wave transmission antenna 10 and the electric field detection antenna 11 were used as the grip detection part 26, another sensor may be used. For example, a capacitive sensor (capacitive touch panel) may be used, or a pressure sensor, a heat detection sensor, or the like may be used. In addition, various sensors that can be arranged on the side surface S1 of the cabinet 2 formed in a curved shape can be used.

<Control processing>
Next, control processing using the grip detection unit 26 will be described. In the present embodiment, when there is an incoming call, control processing of various functions is performed according to detection signals from the grip detection unit 26 and the proximity detection unit 27.

  10 to 12 are flowcharts showing the incoming call control process. 10 to 12 is executed when an incoming call is received from another device to the communication unit 33.

  FIG. 13 and FIG. 14 are diagrams showing screen display examples of the display 3 of the mobile phone 1 during incoming call control.

  Referring to FIG. 10, when an incoming call is received from another device to communication unit 33, control unit 21 first activates proximity detection unit 27 (S101). As a result, the radio wave transmitting antenna 10 transmits a weak radio wave at a second cycle timing different from the first cycle timing of the grip detection unit 26. The grip detection unit 26 is activated in advance when the cellular phone 1 is activated, and the radio wave transmission antenna 10 transmits weak radio waves from the radio wave transmission antenna 10 at the first cycle timing.

  When the proximity detection unit 27 is activated, the control unit 21 determines whether or not the notification setting by the ring tone or the incoming call vibration is set (S102). The presence / absence of notification setting by ringtone or incoming call vibration is preset by the user using a setting application or the like.

  When the notification setting by the ring tone or the incoming call vibration is set (S102: YES), when the incoming call from another device is detected, the control unit 21 sounds the incoming call tone and the incoming call vibration according to the set content. Is started (S103). The control unit 21 determines whether or not the setting for displaying the incoming call screen immediately after the incoming call is made (S104). The presence / absence of display settings for the incoming call screen immediately after an incoming call is set in advance by the user using a setting application or the like.

  When the display setting of the incoming call screen immediately after the incoming call is not set (S104: NO), the control unit 21 makes the grip detection unit 26 in the state in which the display 3 is hidden as shown in the upper left diagram of FIG. It is determined whether or not the user's grip on the mobile phone 1 has been detected (S105). Specifically, the control unit 21 determines whether or not the electric field generated by the radio wave transmitted by the radio wave transmission antenna 10 of the grip detection unit 26 is detected by the electric field detection antenna 11. The non-display state of the display 3 may include a state where the backlight of the display 3 is turned off. Further, the non-display state of the display 3 may include a state where no image is displayed on the display 3. Further, the non-display state of the display 3 may include a state where no information is displayed on the display 3. In the present embodiment, hiding the display 3 may be referred to as ending the display on the display 3.

  When the grip detection unit 26 does not detect the user's grip (S105: NO), the control unit 21 returns the process to S105 unless the incoming call is disconnected (S106: NO), until the user's grip is detected. Repeat the process. When an incoming call from another device is disconnected (S106: YES), the control unit 21 proceeds to S124 in FIG. 11, stops the proximity detection unit 27, and ends the incoming call control process.

  When the grip detection unit 26 detects the user's grip (S105: YES), the control unit 21 stops the ringtone and the incoming vibration (S107). Then, the control unit 21 displays the incoming call screen R1 on the display 3 (S108). As a result, the incoming call screen R1 is displayed on the display 3 in a state where the ringtone and the incoming call vibration are stopped as shown in the upper center of FIG.

On the incoming call screen R1, a message indicating that a call is being received, the caller's telephone number, and the name corresponding to the telephone number registered in the storage unit 22 are displayed. The incoming call screen R1 includes a reception icon 111, a hold icon 112, and a disconnect icon 113. A function for responding to an incoming call is assigned to the reception icon 111. The hold icon 112 is assigned a function for responding to an incoming call and transmitting a voice, a melody, etc. to the caller that the user cannot answer the call. The disconnect icon 113 is assigned a function for disconnecting an incoming call.

  Returning to FIG. 10, when the incoming call screen R1 is displayed on the display 3, the control unit 21 advances the processing to S113 in FIG.

  When both the ring tone and the notification setting based on the incoming call vibration are not set (S102: NO), the user cannot recognize the incoming call, so the control unit 21 displays on the display 3 as shown in the lower left diagram of FIG. The incoming call screen R1 is displayed (S109).

  Similarly, when the display setting of the incoming call screen immediately after the incoming call is set (S104: YES), the control unit 21 displays the incoming call screen R1 on the display 3 as shown in the lower left diagram of FIG. 13 (S109). ).

  And the control part 21 determines whether the grip detection part 26 detected a user's grip in the state which displayed the incoming call screen R1 on the display 3 (S110).

  When the grip detection unit 26 does not detect the user's grip (S110: NO), the control unit 21 returns the processing to S110 unless the incoming call is disconnected (S111: NO) until the user's grip is detected. Repeat the process. When the incoming call from another device is disconnected (S111: YES), the control unit 21 proceeds to S124 in FIG. 11, stops the proximity detection unit 27, and ends the incoming call control process.

  When the grip detection unit 26 detects the user's grip (S110: YES), the control unit 21 stops the ringtone and the incoming vibration (S112). As a result, the incoming call screen R1 is displayed on the display 3 in a state where the ringtone and the incoming call vibration are stopped as shown in the upper center of FIG.

  Returning to FIG. 10, when the incoming call screen R1 is displayed on the display 3, the control unit 21 advances the processing to S113 in FIG.

  Referring to FIG. 11, control unit 21 determines whether or not grip detection unit 26 has detected that the user has released mobile phone 1 (S <b> 113). Specifically, the control unit 21 determines whether or not the electric field generated by the radio wave transmitted by the radio wave transmission antenna 10 of the grip detection unit 26 is no longer detected by the electric field detection antenna 11.

  When the grip detection unit 26 does not detect that the user has lifted the mobile phone 1 (S113: NO), that is, when the user grips the mobile phone 1, the control unit 21 includes the proximity detection unit. 27 determines whether or not it is detected that the object is approaching (S114). Specifically, the control unit 21 determines whether or not the electric field generated by the radio wave transmitted by the radio wave transmission antenna 10 of the proximity detection unit 27 is detected by the electric field detection antenna 12 arranged in the vicinity of the call speaker 6. To do.

  When the proximity detection unit 27 has not detected that the object is approaching (S114: NO), the control unit 21 determines whether or not a tap operation has been performed on the reception icon 111 (S115). When the tap operation is not performed on the reception icon 111 (S115: NO), the control unit 21 returns the process to S113 and repeats the determination processes of S113 to S115 unless the incoming call is disconnected (S116: NO). When an incoming call from another device is disconnected, or when a tap operation is performed on the disconnection icon 113 (S116: YES), the control unit 21 proceeds to S124 in FIG. Stop and end the incoming call control process.

  When the grip detection unit 26 detects that the user has lifted the mobile phone 1 (S113: YES), the control unit 21 hides the display 3 as shown in the lower center diagram of FIG. S117), the mobile phone 1 is set in the response hold state (S118). Specifically, the control unit 21 responds to the incoming call and notifies the caller of a voice, a melody, or the like indicating that the user cannot answer the call at present.

  And the control part 21 determines whether the grip detection part 26 detected the user's grip in the state which made the display 3 non-display (S119).

  When the grip detection unit 26 does not detect the user's grip (S119: NO), the control unit 21 returns the process to S119 unless the incoming call is disconnected (S120: NO) until the user's grip is detected. Repeat the process. If the incoming call from another device is disconnected (S120: YES), the control unit 21 proceeds to S124 in FIG. 11, stops the proximity detection unit 27, and ends the incoming call control process.

  When the grip detection unit 26 detects the user's grip (S119: YES), the control unit 21 displays the response hold screen H1 on the display 3 (S121). As a result, the response hold screen H1 is displayed on the display 3 in a state where the ring tone and the incoming call vibration are stopped as shown in the upper center of FIG.

  On the response hold screen H1, a message indicating that the response is on hold, the telephone number of the caller, the name corresponding to the telephone number registered in the storage unit 22, and the like are displayed. A call reception icon 111 and a disconnection icon 113 are displayed on the response hold screen H1.

  When the proximity detection unit 27 detects that an object is approaching (S114: YES) or when a tap operation is performed on the reception icon 111 (S115: YES), the control unit 21 displays the upper right of FIG. As shown in the figure, the display 3 is hidden (S122), and call processing is executed (S123).

  FIG. 12 is a flowchart showing the call control process.

  Referring to FIG. 12, first, the control unit 21 executes a call start process (S201). When the mobile phone 1 is not in the response hold state, the call start processing includes, for example, establishment of a communication network with a communication destination telephone, input / output processing of received voice, and the like. When the mobile phone 1 is in the response hold state, the call start process includes a response hold state release process, a received voice input / output process, and the like.

  The control unit 21 determines whether or not the proximity detection unit 27 has detected that the object has left (S202). Specifically, the control unit 21 determines whether or not the electric field generated by the radio wave transmitted by the radio wave transmission antenna 10 of the proximity detection unit 27 is no longer detected by the electric field detection antenna 12.

  When the proximity detection unit 27 has not detected that the object has been separated (S202: NO), the control unit 21 returns the process to S202, unless the incoming call is disconnected (S203: NO), and that the object has left. Repeat the process until it is detected. When the incoming call from another device is disconnected (S203: YES), the control unit 21 executes a call termination process (S204). The call termination processing includes, for example, disconnection of a communication network with a communication destination telephone. Then, the control unit 21 advances the processing to S124 in FIG. 11, stops the proximity detection unit 27, and ends the incoming call control processing.

When the proximity detection unit 27 detects that the object has left (S202: YES), the control unit 2
1 displays the call screen T1 on the display 3 (S205). As a result, the call screen T1 is displayed on the display 3 as shown in the lower right diagram of FIG.

  On the call screen T1, a caller's telephone number, a name corresponding to the telephone number registered in the storage unit 22, and the like are displayed. On the call screen T1, a hold icon 112, a disconnect icon 113, and a mute icon 114 are displayed. The mute icon 114 is assigned a function for blocking sound input to the microphone 5. When a tap operation is performed on the mute icon 114, the function of blocking sound input to the microphone 5 is enabled, and the mute icon 114 is highlighted. In this state, when the tap operation is further performed on the mute icon 114, the function of blocking the voice input to the microphone 5 is disabled, and the highlighted display of the mute icon 114 is released. Blocking the voice input means stopping the user's voice from being transmitted to the mobile phone of the call partner via the communication unit 33. Specifically, for example, the control unit 21 may interrupt the voice input by stopping the power supply to the voice input unit 28 and the microphone 5 and stopping the sound input from the microphone 5. Further, the control unit 21 may block the voice input by stopping the sound received by the microphone 5 from being output to the communication unit 33. The control unit 21 may block the voice input by stopping the process of transmitting the sound received by the microphone 5 via the communication unit 33. Returning to FIG. 12, when the call screen T1 is displayed on the display 3, the control unit 21 determines whether or not the proximity detection unit 27 has detected that an object is approaching (S206).

  When the proximity detection unit 27 has not detected that the object is approaching (S206: NO), the control unit 21 returns the process to S206 and returns to the object approaching unless the incoming call is disconnected (S207: NO). Repeat the process until it is detected. When an incoming call from another device is disconnected or when a tap operation is performed on the disconnection icon 113 (S207: YES), the control unit 21 executes a call end process (S204). Then, the control unit 21 advances the processing to S124 in FIG. 11, stops the proximity detection unit 27, and ends the incoming call control processing.

  When the proximity detection unit 27 detects that an object is approaching (S206: YES), the control unit 21 hides the display 3 as shown in the upper right diagram of FIG. 13 (S208), and the process is performed in S202. Return to. Thereafter, until the incoming call is disconnected (S203: YES, S207: YES), the control unit 21 repeats the call process while detecting whether or not an object is close.

  When the call is terminated and the communication network is disconnected (S203: YES, S207: YES), the control unit 21 executes a call termination process (S204). Then, the control unit 21 advances the processing to S124 in FIG. 11, stops the proximity detection unit 27, and ends the incoming call control processing.

  As described above, according to the present embodiment, after the mobile phone 1 is gripped, the call processing is automatically started only by the operation of bringing the mobile phone 1 close to the ear, so that the user can start the call smoothly. it can.

  Further, according to the present embodiment, when the mobile phone 1 is released after the mobile phone 1 is gripped, the response is automatically put on hold, so that the user can perform the response hold process smoothly. .

  Further, according to the present embodiment, when the cellular phone 1 is released after gripping the cellular phone 1, the display 3 is automatically hidden, so that power consumption can be suppressed.

Further, according to the present embodiment, the display 3 can be hidden in the state where the user immediately after the incoming call is not gripping the mobile phone 1, so that the caller information such as the telephone number and the name is not displayed. It can be prevented from being easily known to the three parties. In addition, when notification settings such as a ring tone and incoming vibration are set and the user can recognize the incoming call, the display 3 can be hidden, so that the power consumption can be reduced.

  In addition, according to the present embodiment, when the user grips the mobile phone 1 and brings the mobile phone 1 close to the ear, the display 3 is not displayed, so that the effect of further reducing power consumption is achieved. The

  In addition, according to the present embodiment, when the user grips the mobile phone 1, notification of ringtones, incoming call vibrations, and the like is automatically stopped. When starting, it is possible to prevent a ring tone from being notified at a short distance from the user's ear. Also, in situations where a ring tone or ringing vibration is not desired, such as in a train or a meeting, the user may stop the ringing tone or ringing vibration without disconnecting the incoming call by gripping the mobile phone 1. it can.

  Moreover, according to this Embodiment, since the grip detection part 26 and the proximity | contact detection part 27 are provided, it can be determined appropriately whether the user can talk. For example, when the control unit 21 does not determine whether or not the grip detection unit 26 has detected that the user has gripped, the user talks when the user grips the vicinity of the radio wave transmission antenna 10 and the vicinity of the electric field detection antenna 12. The control unit 21 erroneously detects that the user is in a call-capable state, but executes the call process (S123), even though the system is not in place. On the other hand, according to the present embodiment, the grip detection unit 26 first detects that the user has gripped, and then the proximity detection unit 27 detects whether the user has brought the mobile phone 1 close to the ear. It is possible to appropriately determine whether or not the user has a system for making a call.

  Furthermore, according to the present embodiment, when the user grips the mobile phone 1, the incoming call screen R1 is automatically displayed on the display 3. Therefore, the user performs an operation of pressing a button or the like for turning on the display 3. Can be omitted. Further, when the cellular phone 1 is moved away from the state in which the cellular phone 1 is close to the ear, the call screen T1 is automatically displayed on the display 3, so that the user performs an operation of pressing a button or the like for turning on the display 3. Can be omitted.

<Modification Example 1 of Control Processing>
In the above-described embodiment, in a state where the user is not gripping the mobile phone 1, the display 3 is not displayed to prevent the sender information from being easily leaked to a third party. On the other hand, in the first modification, the incoming call screen is displayed on the display 3, but security is enhanced by hiding the telephone number and name on the incoming call screen.

  FIG. 15 is a flowchart showing an incoming call control process according to the first modification. FIG. 15 is a partial modification of the flowchart of FIG. FIG. 16 is a diagram illustrating a screen display example of the display 3 of the mobile phone 1 at the time of incoming call control according to the first modification.

  Referring to FIG. 15, when control unit 21 starts ringing and ringing vibration according to the setting contents (S103), it is determined whether or not security is set for the incoming call screen immediately after the incoming call. Determine (S301). Note that the presence / absence of security settings for the incoming call screen immediately after an incoming call is set in advance by the user using a setting application or the like.

When the security setting is set for the incoming call screen immediately after the incoming call (S301: YES), the control unit 21 displays the incoming call screen R2 on the display 3 as shown in the upper left diagram of FIG. 16 (S302). If security settings are not set for the incoming call screen immediately after an incoming call (
S301: NO), the control unit 21 displays the incoming call screen R1 on the display 3 as shown in the lower left diagram of FIG. 16 (S109).

  On the incoming call screen R2, only a message indicating that the call is being received is displayed, and the telephone number of the caller and the name corresponding to the telephone number registered in the storage unit 22 are not displayed.

  When the grip detection unit 26 detects the user's grip (S105: YES), the control unit 21 stops the ringtone and the incoming vibration (S107). Then, the control unit 21 displays the incoming call screen R1 on the display 3 (S108). As a result, as shown in the center upper part of FIG. 16, the incoming call screen R1 is displayed on the display 3 in a state where the ring tone and the incoming call vibration are stopped.

  With the configuration of this modification, the telephone number, name, etc. are not displayed on the display 3 when the user immediately after receiving the call is not gripping the mobile phone 1, so that the sender's information is easily known to a third party. Can be prevented.

  Further, with the configuration according to the present modification example, it is possible to notify the user of an incoming call while improving security even in a situation where the ring tone and the incoming call vibration cannot be set.

<Example 2 of control processing change>
In the second modification, in addition to the control process of the above embodiment, a control process for automatically muting the microphone 5 in response to proximity detection is executed.

  FIG. 17 is a flowchart illustrating a call control process according to the second modification. FIG. 17 partially adds processing to the flowchart of FIG. FIG. 18 is a diagram illustrating a screen display example of the display 3 of the mobile phone 1 during incoming control according to the second modification.

  Referring to FIG. 17, when proximity detection unit 27 detects that an object has moved away (S202: YES), control unit 21 determines whether or not mute is set (S501). The presence / absence of mute setting is set in advance by the user using a setting application or the like.

  When the mute setting is made (S501: YES), the control unit 21 blocks the voice input to the microphone 5 (S502). Then, the control unit 21 displays the call screen T1 in a state where the mute icon 114 is emphasized as shown in the lower right diagram of FIG. 18 on the display 3 (S205). Note that when the user performs a tap operation on the mute icon 114, the control unit 21 releases the interruption of the voice input to the microphone 5.

  When the mute setting is not made (S501: NO), the control unit 21 does not block the sound input to the microphone 5 and the mute icon 114 is not emphasized as shown in the lower right diagram of FIG. The call screen T1 is displayed on the display 3 (S205).

  Returning to FIG. 12, when the call screen T1 is displayed on the display 3, the control unit 21 determines whether or not the proximity detection unit 27 has detected that an object is approaching (S206).

  When the proximity detection unit 27 detects that an object is approaching (S206: YES), the control unit 21 determines whether or not the voice input to the microphone 5 is blocked (S503).

When the voice input to the microphone 5 is blocked (S503: YES), the control unit 21 releases the block of the voice input to the microphone 5 (S504). Thereafter, the control unit 21 hides the display 3 (S208), and returns the process to S202.

  When the voice input to the microphone 5 is not blocked (S503: NO), the control unit 21 hides the display 3 as shown in the upper right diagram of FIG. 18 (S208), and returns the process to S202.

  Thereafter, until the incoming call is disconnected (S203: YES, S207: YES), the control unit 21 repeats the call process while detecting whether or not an object is close.

  According to the configuration of this modification example, when the user moves the mobile phone 1 away from the ear during a call, the voice input to the microphone 5 is automatically cut off, so the user can mute the icon 114 to cut off the voice input. It is possible to save the trouble of performing a tap operation on.

  Further, with the configuration of the present modification, the user can quickly cut off the voice input to the microphone 5 by moving the mobile phone 1 away from the ear during a call. Therefore, it is possible to prevent a conversation, a voice, or the like that is not desired to be transmitted to the destination.

<Modification Example 3 of Control Processing>
In the third modification, in addition to the control process of the above-described embodiment, a volume adjustment control process using the back touch panel 7 is executed.

  FIG. 19A and FIG. 19B are flowcharts showing call control processing according to the third modification. FIG. 19A and FIG. 19B partially add processing to the flowchart of FIG. FIG. 19C is a schematic diagram showing the back surface of the mobile phone 1, and FIG. 19D is a schematic diagram showing a situation during a call.

  In the call control process shown in FIG. 12, when the mobile phone 1 is close to the user's ear (S201, S203: NO), the control unit 21 determines whether or not a flick operation has been performed on the back touch panel 7. (S601). When the flick operation is performed on the back touch panel 7 (S601: YES), the control unit 21 adjusts the volume of the call speaker 6 according to the flick operation (S602).

  Similarly, when the mobile phone 1 is not close to the user's ear (S205, S207: NO), the control unit 21 determines whether or not a flick operation has been performed on the back touch panel 7 (S603). . When the flick operation is performed on the back touch panel 7 (S603: YES), the control unit 21 adjusts the volume of the call speaker 6 according to the flick operation (S604).

  For example, as shown in FIG. 19C, when an upward flick operation is performed on the back touch panel 7, the control unit 21 increases the volume of the call speaker 6 and performs a downward flick operation. Then, the volume of the call speaker 6 is reduced.

  If it is the structure of this modification, as shown in FIG.19 (c), the volume of the call speaker 6 can be adjusted by the flick operation of the back touch panel 7. FIG. Therefore, as shown in FIG. 19D, even when the mobile phone 1 is kept close to the ear, the user can easily adjust the volume of the call speaker 6.

In this modified example, when the flick operation in the vertical direction is performed on the back touch panel 7, the volume of the call speaker 6 is adjusted. In addition, the flick operation in the horizontal direction on the back touch panel 7 is performed. When is performed, the volume of the microphone 5 may be adjusted. Further, the operation on the back touch panel 7 may be a touch operation other than the flick operation.

<Example 4 of control change>
In the embodiment and the modification described above, the incoming call control process when the user does not grip the mobile phone 1 at the time of incoming call has been described. In the fourth modification, an incoming call control process when the user grips the mobile phone 1 at the time of incoming call will be described.

  FIG. 20 is a flowchart illustrating incoming call control processing according to the fourth modification. FIG. 20 is a partial change by combining the flowchart of FIG. 10, and only a part of the processing including the changed processing is shown. FIG. 21 is a diagram illustrating a screen display example of the display 3 of the mobile phone 1 at the time of incoming call control according to the fourth modification.

  Referring to FIG. 20, when an incoming call is received from another device to communication unit 33, first, control unit 21 activates proximity detection unit 27 (S101). Then, the control unit 21 determines whether or not the grip detection unit 26 has detected the user's grip on the mobile phone 1 at the time of the incoming call (S701).

  When the grip detection unit 26 does not detect the user's grip on the mobile phone 1 at the time of the incoming call (S701: NO), the control unit 21 proceeds to S102 in FIG. 10 and, similarly to the above embodiment, Depending on the grip status of the mobile phone 1, the display 3 is switched between display and non-display, ringing tone, ringing vibration, and other notification processes are turned on and off.

  When the grip detection unit 26 has detected a grip on the mobile phone 1 by the user at the time of the incoming call (S701: YES), the control unit 21 determines whether or not the notification setting by the ring tone or the incoming call vibration is set ( S702).

  When the notification setting by the ringtone or ringing vibration is set (S702: YES), the control unit 21 starts ringing of ringtone and ringing vibration according to the set content (S703). The control unit 21 displays the incoming call screen R1 on the display 3 (S704). As a result, as shown in the upper left diagram of FIG.

  When the notification setting by the ring tone or the incoming call vibration is not set (S702: NO), the control unit 21 displays the incoming call screen R1 on the display 3 (S704).

  After that, the control unit 21 advances the processing of FIG. 11 to S113, and performs processing such as call response and response hold according to the detection status of the grip detection unit 26 and the detection status of the proximity detection unit 27 as in the above embodiment. Run.

  With the configuration of this modified example, in the situation where the user is gripping and operating the mobile phone 1, the display 3 is not hidden, and notifications such as ringtones and incoming vibrations are not stopped. Can properly know that there was an incoming call while operating the mobile phone 1.

  In the above example, when the user switches to a call by bringing his ear close to the mobile phone 1 or operating the reception icon 111, the ring tone and the incoming call vibration are stopped. However, when a predetermined time (a time enough for the user to grasp the incoming call, for example, about several seconds) elapses after the incoming call, the ringtone or the like may be automatically stopped. The user can prevent the ringing tone or the like from being notified at a short distance of the ear by bringing the mobile phone close to the ear after the ringing tone or the like stops.

<Others>
While the embodiments and modifications of the present invention have been described above, the present invention is not limited to the above-described embodiments and the like, and the embodiments of the present invention are variously modified in addition to the above. Is possible.

  For example, in the above-described embodiment and modification, the incoming call control process is continued until the incoming call is disconnected, but the answering machine function may be executed when a predetermined time or more has elapsed. In this case, the control unit 21 starts the time counting process at the timing when the incoming call control process is started, and executes the answering machine function when the predetermined time is reached.

  The present invention is not limited to a mobile phone, and can be applied to various mobile terminal devices such as a PDA (Personal Digital Assistant), a tablet PC (Tablet PC), and an electronic book terminal.

  In addition, the embodiment of the present invention can be variously modified as appropriate within the scope of the technical idea shown in the claims.

2 cabinets
3 Display
10 Radio wave transmission antenna
11 Electric field detection antenna
13 Radio transmission / reception antenna
23 Display
26 Grip detector
201 Body
201i-201l screw
202 cover
202b, 202c Curved surface
S1 side
S2 Bottom
S3 back

Claims (7)

A housing having a front surface, a back surface, and a plurality of side surfaces;
A display unit provided on the front surface;
A grip detection unit for detecting that the housing has been gripped,
A corner formed by the back surface and the first side surface of the housing is formed into a curved shape,
The grip detection unit is arranged at the corner,
The portable terminal device characterized by the above-mentioned. The mobile terminal device according to claim 1,
The housing has a left side, a right side, an upper side and a lower side,
The grip detection unit is disposed at the corner at the lower side end of at least one side of the right side and the left side,
The portable terminal device characterized by the above-mentioned. The mobile terminal device according to claim 1 or 2,
The grip detection unit is disposed across the first side surface of the housing and the second side surface connected to the first side surface,
The portable terminal device characterized by the above-mentioned. The mobile terminal device according to claim 3.
A radio wave transmitting / receiving antenna for transmitting and receiving radio waves is disposed on the second side surface side of the housing,
The grip detection unit is arranged in a range of the second side surface that does not overlap the radio wave transmission / reception antenna in a direction perpendicular to the second side surface,
The portable terminal device characterized by the above-mentioned. In the portable terminal device according to any one of claims 1 to 4,
The grip detection unit is arranged at the corner so as to be separated from a flat surface connected to the corner on the back surface by a predetermined interval in a direction perpendicular to the flat surface.
The portable terminal device characterized by the above-mentioned. In the portable terminal device according to any one of claims 1 to 5,
The housing includes a storage unit that stores the display unit, and a cover that protects the storage unit from the outside.
The grip detection unit includes a first antenna that transmits radio waves, and a second antenna that detects an electric field generated by the radio waves transmitted by the first antenna,
The first antenna and the second antenna are attached to the cover,
The portable terminal device characterized by the above-mentioned. The terminal device according to claim 6,
The accommodating portion includes a screw for screwing a member disposed in the accommodating portion,
The screws arranged around the grip detection unit are non-magnetic materials.
The portable terminal device characterized by the above-mentioned.

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