JP2016092451A - mobile phone - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mobile phone capable of performing normal voice communication in the same manner when a communication mode with higher speech quality is selected even when a communication mode with lower speech quality is selected.SOLUTION: An identification unit 16 finds out whether communication with a radio base station is voice communication by VoLTE or voice communication by CDMA. A notification unit 8 notifies a user that the user should not touch an antenna if the communication with the radio base station is voice communication by VoLTE.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a mobile phone, and more particularly to a mobile phone that can communicate with a communication method selected from two communication methods.

  2. Description of the Related Art Conventionally, a radio base station and a portable terminal that perform a voice call using a data communication method are known.

  For example, Patent Document 1 describes a radio base station and a portable terminal that comply with VoLTE (Voice Over Long Term Evolution), which performs voice communication using an LTE (Long Term Evolution) line.

JP 2014-75734 A

  When the mobile phone enables switching between voice communication using the data communication method and voice communication using the circuit switching method, one call quality may be lower than the other call quality.

  The user does not recognize whether the selected method is a method with high call quality or a method with low call quality. When a method with a low call quality is selected, it is desirable that the voice call be executed normally as in the case where a method with a high call quality is selected.

  Therefore, an object of the present invention is to provide a mobile phone that can normally execute a voice call even when a communication method having a lower call quality is selected as in the case where a method having a higher call quality is selected. Is to provide.

  In the mobile phone of one embodiment of the present invention, the communication between the antenna, the first communication method and the second communication method to perform a voice call, and the wireless base station communicate with each other. When the communication with the radio base station is a voice call based on the first communication method and an identification unit for identifying whether the voice call is based on the method or the voice communication based on the second communication method, the user uses an antenna. A notification unit that performs notification to prevent touching. The first communication method is a packet switching method, and the second communication method is a circuit switching method.

  According to one embodiment of the present invention, when a communication method having a lower call quality is selected, the call quality can be prevented from further deteriorating or the call quality can be improved.

It is a figure showing the structure of the mobile telephone of 1st Embodiment. It is a front view showing the external appearance of a mobile phone. It is a rear view showing the external appearance of a mobile phone. It is a flowchart showing the control procedure of the voice call in 1st Embodiment. (A) And (b) is a figure showing the example of the notification screen in 1st Embodiment. It is a flowchart showing the control procedure of the voice call in the modification 1 of 1st Embodiment. (A) And (b) is a figure showing the example of the notification screen in the modification 1 of 1st Embodiment. It is a flowchart showing the control procedure of the voice call in the modification 2 of 1st Embodiment. (A) And (b) is a figure showing the example of the notification screen in the modification 2 of 1st Embodiment. It is a figure showing the structure of the mobile telephone of 2nd Embodiment. (A)-(c) is a disassembled perspective view of the one part member incorporated in the housing | casing of a mobile telephone. It is a figure showing the position of the antenna arrange | positioned at a accommodating part. It is a flowchart showing the control procedure of the voice call in 2nd Embodiment. (A) And (b) is a figure showing the example of the notification screen in 2nd Embodiment. It is a flowchart showing the control procedure of the voice call in the modification 1 of 2nd Embodiment. (A) And (b) is a figure showing the example of the notification screen in the modification 1 of 2nd Embodiment. It is a flowchart showing the control procedure of the voice call in the modification 2 of 2nd Embodiment. (A) And (b) is a figure showing the example of the notification screen in the modification 2 of 2nd Embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
The mobile phone of this embodiment can switch between voice communication using the 3GPP (Third Generation Partnership Project) method and voice communication using the VoLTE method. In such a case, the following problems have conventionally occurred.

  Since the reception sensitivity of the VoLTE method is lower than the reception sensitivity of the 3GPP method, the call quality in the VoLTE is lower than the call quality in the 3GPP method.

  The user does not know whether the selected method is the 3GPP method or the VoLTE method. Even when the VoLTE method is selected, there may be a problem if the user operates the mobile phone in the same way as during a voice call using the 3GPP method. For example, if the user's hand touches the antenna, the voice call using the 3GPP method has little effect on the call quality, but the voice call using the VoLTE method deteriorates to such an extent that the voice call is disturbed. There is a case.

  In this embodiment, when using VoLTE communication with low reception sensitivity in a voice call, the position of the antenna is displayed so that the user does not touch the antenna, thereby avoiding the deterioration of the call quality.

FIG. 1 is a diagram illustrating a configuration of a mobile phone 1 according to the first embodiment.
As shown in FIG. 1, the mobile phone 1 includes an antenna 2, a wireless communication unit 3, a communication control unit 4, a microphone 5, an application execution unit 6, a touch panel 7, a notification unit 8, and a liquid crystal display 9. A proximity sensor 10, a hands-free control unit 11, a speaker 12, a receiver 13, and an identification unit 16. The communication control unit 4 includes a CDMA (Code Division Multiple Access) communication control unit 14, a VoLTE communication control unit 15, and a selection unit 18.

  The wireless communication unit 3 receives a VoLTE communication method or CDMA wireless signal from the wireless base station through the antenna 2 and transmits a VoLTE communication method or CDMA wireless signal to the wireless base station.

  Although only one antenna is illustrated in FIG. 1, the mobile phone 1 may include a plurality of antennas. The wireless communication unit 3 may switch the antenna to be used between communication using the CDMA method and communication using the VoLTE method. The wireless communication unit 3 may be separated into two modules for communication using the CDMA method and for communication using the VoLTE method.

A user's voice or the like is input to the microphone 5.
The application execution unit 6 executes various applications.

The touch panel 7 receives input from the user.
The liquid crystal display 9 displays an inquiry screen or a notification screen for the user.

  The proximity sensor 10 detects that an object, particularly a user's ear is approaching during a voice call.

  The hands-free control unit 11 controls on / off of the hands-free call based on a user setting instruction or the like.

  The speaker 12 outputs the received voice of the other party when hands-free is on. The speaker 12 outputs a telephone ringtone and various alarm sounds. The receiver 13 outputs the received voice of the other party when hands-free is off.

  The communication control unit 4 controls a voice call. The CDMA communication control unit 14 can transmit and receive signals with a CDMA wireless base station using a CDMA method when the mobile phone 1 is present in a CMDA cell that is a kind of 3GPP method. In a voice call using the CDMA system, communication is performed using a circuit switching system. The VoLTE communication control unit 15 can transmit and receive signals with the VoLTE wireless base station using the VoLTE method when the mobile phone 1 is present in the VoLTE cell. In the voice call of the VoLTE method, communication (data communication) by the packet switching method is performed. The selection unit 18 selects whether to make a voice call using the CDMA system or a voice call using the VoLTE system, based on the level of the signal transmitted using the CDMA system and the level of the signal transmitted using the VoLTE system. .

  Here, the VoLTE system is a system for performing a voice call using VoIP (Voice over Internet Protocol), which is a packet switching system, using an LTE network. The VoLTE radio base station is a base station capable of performing a voice call using VoIP, which is a packet switching system, among LTE radio base stations.

  The identification unit 16 identifies whether the communication with the radio base station is a voice call based on the VoLTE communication system or a voice call based on the CDMA system.

  The notification unit 8 performs a notification to prevent the user from touching the antenna 2 when the communication with the radio base station is a voice call based on the VoLTE method.

  In this specification, touching the antenna 2 includes that a user's hand is in direct contact with the antenna 2, indirect contact with the antenna 2, or covering the antenna 2.

  The case where the user's hand is in direct contact with the antenna 2 means that when part or all of the antenna 2 is outside the casing of the mobile phone 1, the user's finger is directly on part or all of the antenna 2. This is a case of contact.

  The case where the user's hand is in indirect contact with the antenna 2 means that when a part or all of the antenna 2 is inside the casing of the mobile phone 1, the user's finger is connected to the antenna 2 through the casing. This is a case of touching part or all.

  The case where the user's hand covers the antenna 2 means that the user's hand becomes an obstacle for signal transmission / reception by the antenna 2.

  FIG. 2 is a front view showing the appearance of the mobile phone 1. FIG. 3 is a rear view showing the appearance of the mobile phone 1.

  The mobile phone 1 has a housing 30 that serves as a main body. The housing 30 includes a front case 30a and a rear case 30b.

  The front case 30a is disposed on the side facing the user. A touch panel 7 and a liquid crystal display 9 are disposed on the front case 30a. Further, the microphone 5, the receiver 13, and the proximity sensor 10 are disposed in the front case 30a.

  The rear case 30b is disposed on the side facing the palm of the user. The speaker 12 is disposed in the rear case 30b.

FIG. 4 is a flowchart showing a voice call control procedure according to the first embodiment.
In step S101, when the communication control unit 4 detects an incoming voice call, the process proceeds to step S102.

  In step S102, the identification unit 16 detects whether the voice call whose incoming call has been detected is realized by data communication (that is, VoLTE communication) or other than data communication (that is, CDMA communication). If the voice call is realized by data communication, the process proceeds to step S103. If the voice call is realized by other than data communication, the process proceeds to step S104.

  In step S103, the notification unit 8 displays on the liquid crystal display 9 a screen indicating the position of the antenna 2 as shown in FIG. This is because the user may touch the antenna 2 in an attempt to hold the mobile phone 1.

  In step S104, when the request for voice call is responded with hands-free, the process proceeds to step S105. When the hands-free operation does not respond to the voice call request, the process proceeds to step S111.

  In step S105, the communication control unit 4 controls the voice call. When the voice call is realized by data communication, the VoLTE communication control unit 15 controls the voice call. When the voice call is realized by other than data communication, the CDMA communication control unit 14 controls the voice call.

  In step S <b> 106, when switching to hands-free off is instructed by a user operating a switch button, the process proceeds to step S <b> 107. If the user has not instructed switching to hands-off, the process proceeds to step S109.

  In step S107, the identification unit 16 detects whether or not the voice call being executed is realized by data communication (that is, VoLTE communication). If the voice call is realized by data communication, the process proceeds to step S108. If the voice call is realized by other than data communication, the process proceeds to step S109.

  In step S108, the notification unit 8 displays a screen indicating the position of the antenna 2 on the liquid crystal display 9 as shown in FIG. This is because the user may touch the antenna 2 when hands-free is turned off. Thereafter, the process proceeds to step S112.

  In step S <b> 109, the notification unit 8 deletes the screen indicating the position of the antenna 2 displayed on the liquid crystal display 9.

  In step S110, when the call is finished, the process is finished, and when the call is not finished, the process returns to step S105.

  In step S111, when a request for a voice call is responded with hands-off, the process proceeds to step S112. If the voice call request is not responded by hands-off, that is, if the voice call is not responded, the process ends.

  In step S112, the communication control unit 4 controls the voice call. When the voice call is realized by data communication, the VoLTE communication control unit 15 controls the voice call. When the voice call is realized by other than data communication, the CDMA communication control unit 14 controls the voice call.

  If the proximity sensor 10 no longer detects the proximity of the user's body due to the user moving the mobile phone 1 away from the ear in step S113, the process proceeds to step S114. When the proximity sensor 10 detects the contact of the user's body, the process proceeds to step S116.

  In step S114, the identification unit 16 detects whether the voice call being executed is realized by data communication or not by data communication. If the voice call is realized by data communication, the process proceeds to step S115. If the voice call is realized by other than data communication, the process proceeds to step S116.

  In step S115, the notification unit 8 displays a screen showing the position of the antenna 2 on the liquid crystal display 9 as shown in FIG. This is because the user may touch the antenna 2 when trying to operate the mobile phone 1.

  In step S <b> 116, the notification unit 8 erases the screen indicating the position of the antenna 2 displayed on the liquid crystal display 9.

  In step S117, if the call is terminated, the process is terminated. If the call is not terminated, the process returns to step S112.

  As described above, according to the present embodiment, when a voice call is realized by data communication, the user touches the antenna by displaying the position of the antenna used for the user so as to be understood. As a result, it is possible to avoid deterioration of the call quality.

[Modification 1 of the first embodiment]
In this modification, when using VoLTE communication with low reception sensitivity in a voice call, the user is warned not to touch the antenna, thereby avoiding deterioration in call quality.

  FIG. 6 is a flowchart showing a voice call control procedure in the first modification of the first embodiment.

The flowchart of FIG. 6 differs from the flowchart of FIG. 4 as follows.
In the flowchart of FIG. 6, steps S103, S108, and S115 in the flowchart of FIG. 4 are replaced with steps S203, S208, and S215.

  In steps S203, S208, and S214, the notification unit 8 displays a warning screen on the liquid crystal display 9 as shown in FIGS. 7A, 7B, and 7B so as not to touch the antenna. indicate.

  As described above, according to the present modification, when a voice call is realized by data communication, the user is warned not to touch the antenna, so that the call quality is deteriorated by the user touching the antenna. Can be avoided.

[Modification 2 of the first embodiment]
FIG. 8 is a flowchart showing a voice call control procedure in the second modification of the first embodiment.

  In step S601, when the user requests to make a voice call, the process proceeds to step S602.

  In step S602, the identification unit 16 is set by the communication control unit 4 so that the voice call is realized by data communication (that is, VoLTE communication), or is realized other than data communication (that is, CDMA communication). Detect if set to. If the voice call is set to be realized by data communication, the process proceeds to step S603. If the voice call is set to be realized by other than data communication, the process proceeds to step S604.

  In step S <b> 603, the notification unit 8 displays a screen indicating the position of the antenna 2 as illustrated in FIG. 9A on the liquid crystal display 9. This is because the user may touch the antenna 2 in an attempt to hold the mobile phone 1.

  If it is determined in step S604 that the other party has responded to the voice call request, the process proceeds to step S605. If the other party does not respond to the voice call request, the process ends.

  In step S605, when the user requests a call with hands-free on, the process proceeds to step S606. If no call request is requested due to hands-free, the process proceeds to step S612.

  In step S606, the communication control unit 4 controls the voice call. When the voice call is realized by data communication, the VoLTE communication control unit 15 controls the voice call. When the voice call is realized by other than data communication, the CDMA communication control unit 14 controls the voice call.

  If it is determined in step S607 that switching to the hands-free-off is instructed by a switching button operation by the user, the process proceeds to step S608. If the user has not instructed switching to hands-off, the process proceeds to step S610.

  In step S608, the identification unit 16 detects whether the voice call being executed is realized by data communication (that is, VoLTE communication). If the voice call is realized by data communication, the process proceeds to step S609. If the voice call is realized by other than data communication, the process proceeds to step S610.

  In step S609, the notification unit 8 displays on the liquid crystal display 9 a screen indicating the position of the antenna 2 as shown in FIG. This is because the user may touch the antenna 2 when hands-free is turned off. Thereafter, the process proceeds to step S613.

  In step S610, the notification unit 8 deletes the screen indicating the position of the antenna 2 displayed on the liquid crystal display 9.

  In step S611, if the call is terminated, the process ends. If the call is not terminated, the process returns to step S606.

  In step S612, when a call request is made with hands-off, the process proceeds to step S613. If no call request is requested due to hands-off, the process ends.

  In step S613, the communication control unit 4 controls the voice call. When the voice call is realized by data communication, the VoLTE communication control unit 15 controls the voice call. When the voice call is realized by other than data communication, the CDMA communication control unit 14 controls the voice call.

  In step S614, if the proximity sensor 10 no longer detects the proximity of the user's body due to the user moving the mobile phone 1 away from the ear, the process proceeds to step S615. When the proximity sensor 10 detects the contact of the user's body, the process proceeds to step S617.

  In step S615, the identification unit 16 detects whether the voice call being executed is realized by data communication or other than data communication. If the voice call is realized by data communication, the process proceeds to step S616. If the voice call is realized by other than data communication, the process proceeds to step S617.

  In step S616, the notification unit 8 displays a screen showing the position of the antenna 2 as shown in FIG. This is because the user may touch the antenna 2 when trying to operate the mobile phone 1.

  In step S617, the notification unit 8 deletes the screen indicating the position of the antenna 2 displayed on the liquid crystal display 9.

  In step S618, if the call is terminated, the process ends. If the call is not terminated, the process returns to step S613.

  As described above, according to the present modification, even when a voice call is requested (called), the voice call is realized by data communication in the same manner as when the voice call request of the first embodiment is received. In such a case, by displaying the position of the antenna used for the user so as to be known, it is possible to avoid deterioration of the call quality due to the user touching the antenna.

  In the same way as the first embodiment is modified to the second modification, the method of the first modification of the first embodiment describing the operation when a request for a voice call is received is changed to the voice call. It can also be transformed into an operation when a request (call) is made.

[Second Embodiment]
In this embodiment, when using VoLTE communication with low reception sensitivity in a voice call, when the electric field strength of the received signal is reduced, the user is touching the antenna or the position or orientation of the mobile phone is inappropriate. Warn the user.

FIG. 10 is a diagram illustrating the configuration of the mobile phone 51 according to the second embodiment.
The mobile phone 51 of FIG. 10 is different from the mobile phone 1 of FIG. 1 as follows.

  A mobile phone 51 in FIG. 10 includes an electric field strength detection unit 52 and a touch sensor 53. Further, the notification unit 58 included in the mobile phone 51 of FIG. 10 is different from the notification unit 8 included in the mobile phone 1 of FIG.

The electric field strength detection unit 52 detects the electric field strength of the received signal.
The touch sensor 53 detects the contact of the user's finger. The touch sensor 53 detects the touch of the user's finger, for example, by detecting a change in capacitance.

  The notification unit 58 notifies that the electric field strength of the received signal is low when the communication with the radio base station is voice communication based on the VoLTE method and the electric field strength of the detected received signal is equal to or lower than the threshold value.

  FIGS. 11A to 11C are exploded perspective views of some members built in the housing 30 of the mobile phone 51. FIG.

  The front case 30a and the rear case 30b are disposed such that the concave inner surfaces face each other, and are joined so that the outer peripheral edges thereof overlap each other.

  The circuit board 70 and the antenna 2 are arranged in an intermediate storage portion 30c between the front case 30a and the rear case 30b.

  A touch sensor 53 is provided on the rear case 30b. The touch sensor 53 is disposed in the vicinity of the antenna 2 in the horizontal direction. That is, when the mobile phone 51 is assembled by superimposing the front case 30a, the rear case 30b, and the storage unit 30c, as shown in FIG. 12, the antenna is directly below the position close to the touch sensor 53 in the horizontal direction. 2 is arranged.

  FIG. 13 is a flowchart showing a voice call control procedure according to the second embodiment.

  If an incoming voice call is detected by the communication control unit 4 in step S301, the process proceeds to step S302.

  In step S302, the identification unit 16 detects whether the voice call from which an incoming call has been detected is realized by data communication (that is, VoLTE communication) or other than data communication (that is, CDMA communication). If the voice call is realized by data communication, the process proceeds to step S303. If the voice call is realized by other than data communication, the process proceeds to step S305.

  In step S303, when the electric field strength of the received signal detected by the electric field strength detection unit 52 is equal to or less than the threshold value TH, the process proceeds to step S304, and when the electric field strength of the received signal exceeds the threshold value TH, the process proceeds to step S305. Proceed to

  In step S304, the notification unit 8 changes the screen for warning that the electric field strength is low as shown in FIG. 14A, that is, the electric field strength is low and the position where the mobile phone 51 is gripped, or the mobile phone 1 A warning screen for urging the user to change the position or orientation is displayed on the liquid crystal display 9. This is because the user may touch the antenna 2 in an attempt to hold the mobile phone 51.

  In step S305, when a request for a voice call is responded, the process proceeds to step S306.

  In step S306, the communication control unit 4 controls the voice call. When the voice call is realized by data communication, the VoLTE communication control unit 15 controls the voice call. When the voice call is realized by other than data communication, the CDMA communication control unit 14 controls the voice call.

  In step S307, the identification unit 16 detects whether the voice call being executed is realized by data communication or is not realized by data communication. If the voice call is realized by data communication, the process proceeds to step S308. If the voice call is realized by other than data communication, the process proceeds to step S310.

  In step S308, when the electric field strength of the received signal detected by the electric field strength detection unit 52 is equal to or less than the threshold value TH, the process proceeds to step S309, and when the electric field strength exceeds the threshold value TH, the process proceeds to step S310.

  In step S309, the notification unit 8 displays a screen for warning that the electric field strength is low as shown in FIG. This is because the user is touching the antenna 2 or the position or direction of the mobile phone 51 is not appropriate.

  In step S310, the notification unit 8 erases the screen that is displayed on the liquid crystal display 9 and warns that the electric field strength is low.

  In step S311, the process ends when the call ends, and the process returns to step S306 when the call does not end.

  As described above, according to the present embodiment, when a voice call is realized by data communication, a warning screen is displayed to the user when the electric field strength of the received signal decreases. As a result, the user is prompted to change the position held by the mobile phone or the user is prompted to change the position or orientation of the mobile phone, so that the call quality can be improved.

[Modification 1 of Second Embodiment]
In this modification, when it is detected that the user has touched the touch sensor provided in the vicinity of the antenna, there is a high possibility that the user is touching the antenna, so the user is warned.

  FIG. 15 is a flowchart showing a voice call control procedure in the first modification of the second embodiment.

  In step S401, when the communication control unit 4 detects an incoming voice call, the process proceeds to step S402.

  In step S402, the identification unit 16 detects whether the voice call whose incoming call has been detected is realized by data communication (that is, VoLTE communication) or other than data communication (that is, CDMA communication). If the voice call is realized by data communication, the process proceeds to step S403. If the voice call is realized by other than data communication, the process proceeds to step S405.

  In step S403, when the touch sensor 53 provided in the vicinity of the antenna 2 detects the touch of the user's hand, the process proceeds to step S404, and the process is performed when the touch sensor 53 does not detect the touch of the user's hand. Advances to step S405.

  In step S404, the notification unit 8 displays a warning screen on the liquid crystal display 9 so as not to touch the antenna 2 as shown in FIG. This is because the user is touching the antenna 2.

  In step S405, when the voice call request is responded, the process proceeds to step S406.

  In step S406, the communication control unit 4 controls the voice call. When the voice call is realized by data communication, the VoLTE communication control unit 15 controls the voice call. When the voice call is realized by other than data communication, the CDMA communication control unit 14 controls the voice call.

  In step S407, the identification unit 16 detects whether the ongoing voice call is realized by data communication or other than data communication. If the voice call is realized by data communication, the process proceeds to step S408. If the voice call is realized by other than data communication, the process proceeds to step S410.

  If the touch sensor 53 provided in the vicinity of the antenna 2 detects contact of the user's hand in step S408, the process proceeds to step S409, and if the touch sensor 53 does not detect contact of the user's hand, the process is performed. Advances to step S410.

  In step S409, the notification unit 8 displays a warning screen on the liquid crystal display 9 so as not to touch the antenna 2 as shown in FIG. This is because the user is touching the antenna 2.

  In step S <b> 410, the notification unit 8 erases the screen displayed on the liquid crystal display 9 that warns the user not to touch the antenna 2.

  In step S411, when the call is ended, the process is ended. When the call is not ended, the process returns to step S406.

As described above, according to the present modification, when a voice call is realized by data communication, a warning screen is displayed to the user when the touch sensor near the antenna detects contact of the user's hand. . As a result, the user is prompted to change the position held by the mobile phone, so that the call quality can be improved.
[Modification 2 of the second embodiment]
In this modification, when it is detected that the user has touched the touch sensor provided in the vicinity of the antenna, there is a high possibility that the user is touching the antenna, so the user is warned. Further, when it is not detected that the touch sensor is touched and the electric field strength of the received signal is reduced, the user is warned because the position or orientation of the mobile phone is inappropriate.

  FIG. 17 is a flowchart showing a voice call control procedure in the second modification of the second embodiment.

  In step S501, when the communication control unit 4 detects an incoming voice call, the process proceeds to step S502.

  In step S502, the identification unit 16 detects whether the voice call whose incoming call has been detected is realized by data communication (that is, VoLTE communication) or other than data communication (that is, CDMA communication). If the voice call is realized by data communication, the process proceeds to step S503. If the voice call is realized by other than data communication, the process proceeds to step S507.

  If the touch sensor 53 provided in the vicinity of the antenna 2 detects contact of the user's hand in step S503, the process proceeds to step S504, and if the touch sensor 53 does not detect contact of the user's hand, the process is performed. Advances to step S505.

  In step S504, the notification unit 8 displays a warning screen on the liquid crystal display 9 so as not to touch the antenna 2 as shown in FIG. This is because the user is touching the antenna 2.

  In step S505, when the electric field strength of the received signal detected by the electric field strength detection unit 52 is equal to or less than the threshold value TH, the process proceeds to step S506, and when the electric field strength exceeds the threshold value TH, the process proceeds to step S507.

  In step S506, the notification unit 8 displays a warning screen on the liquid crystal display 9 to change the position or orientation of the mobile phone 51 as shown in FIG. This is because the position or direction of the mobile phone 51 is not appropriate.

  In step S507, when a response to the voice call request is made, the process proceeds to step S508.

  In step S508, the communication control unit 4 controls the voice call. When the voice call is realized by data communication, the VoLTE communication control unit 15 controls the voice call. When the voice call is realized by other than data communication, the CDMA communication control unit 14 controls the voice call.

  In step S509, the identification unit 16 detects whether the ongoing voice call is realized by data communication or other than data communication. If the voice call is realized by data communication, the process proceeds to step S510. If the voice call is realized by other than data communication, the process proceeds to step S514.

  In step S510, when the touch sensor 53 provided in the vicinity of the antenna 2 detects contact of the user's hand, the process proceeds to step S511, and when the touch sensor 53 does not detect contact of the user's hand, the process is performed. Advances to step S512.

  In step S511, the notification unit 8 displays a warning screen on the liquid crystal display 9 so as not to touch the antenna 2 as shown in FIG. This is because the user is touching the antenna 2.

  In step S512, when the electric field strength of the received signal detected by the electric field strength detection unit 52 is equal to or lower than the threshold value TH, the process proceeds to step S513. When the electric field strength exceeds the threshold value TH, the process proceeds to step S514.

  In step S513, the notification unit 8 displays a warning screen on the liquid crystal display 9 so as to change the position or orientation of the mobile phone 51 as shown in FIG. This is because the position or direction of the mobile phone 51 is not appropriate.

  In step S514, the notification unit 8 deletes the screen displayed on the liquid crystal display 9 that warns the user not to touch the antenna 2 or the screen that warns the user to change the position or orientation of the mobile phone 51.

  In step S515, when the call is finished, the process is finished, and when the call is not finished, the process returns to step S508.

  As described above, according to the present modification, when a voice call is realized by data communication, a warning screen is displayed to the user when the touch sensor near the antenna detects contact of the user's hand. . As a result, the user is prompted to change the position held by the mobile phone, so that the call quality can be improved. Further, when the touch sensor in the vicinity of the antenna does not detect the touch of the user's hand and the electric field strength of the received signal is reduced, a warning screen is displayed to the user. As a result, the user is prompted to change the position or change of the mobile phone, so that the call quality can be improved.

[Modification 3 of the second embodiment]
The method of the second embodiment, the first modification, and the second modification describing the operation when a request for a voice call is received in the same manner as the first embodiment is modified to the second modification. It can be modified to an operation when a voice call is requested (called).

(Modification)
The present invention is not limited to the above embodiment, and includes, for example, the following modifications.

(1) Warning notification In the above embodiment, only when a voice call is realized by data communication, warnings such as displaying the antenna position, instructing not to touch the antenna, and changing the position or orientation of the mobile phone However, the present invention is not limited to this. Even when a voice call is realized by a method other than data communication (CDMA communication), the warning may be performed.

(2) Circuit switching method and data communication method In the above embodiment, CDMA communication has been described as an example of a circuit switching communication method. However, the present invention is not limited to this, and other circuit switching communication methods. May be used. Further, the voice call in the data communication system is not limited to the VoLTE system.

(3) Display of warning In the embodiment of the present invention, a warning display is included in the screen during an incoming call, outgoing call, or voice call. However, the present invention is not limited to this. A warning may be displayed as a pop-up on the screen during an incoming call, a call or a voice call.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  1, 51 mobile phone, 2 antenna, 3 wireless communication unit, 4 communication control unit, 5 microphone, 6 application execution unit, 7 touch panel, 8, 58 notification unit, 9 liquid crystal display, 10 proximity sensor, 11 hands-free control unit, 12 speakers, 13 receivers, 14 CDMA communication control units, 15 VoLTE communication control units, 16 identification units, 18 selection units, 52 electrolytic strength detection units, 53 touch sensors.

Claims (11)

An antenna,
A communication control unit for performing a voice call by switching between the first communication method and the second communication method;
An identification unit for identifying whether the communication with the radio base station is a voice call according to the first communication method or a voice call according to the second communication method;
In the case where the communication with the wireless base station is a voice call by the first communication method, a notification unit that performs notification to prevent the user from touching the antenna,
The mobile phone, wherein the first communication method is a packet switching method and the second communication method is a circuit switching method.   The mobile phone according to claim 1, wherein the notification unit displays the position of the antenna when the communication with the radio base station is a voice call by the first communication method.   The mobile phone according to claim 1, wherein the notification unit warns the user not to touch the antenna when the communication with the radio base station is a voice call based on the first communication method.   The mobile phone according to claim 1, wherein the notification unit performs the notification when an incoming call is received.   The mobile phone according to claim 1, wherein the notification unit performs the notification when a call is made.   The mobile phone according to claim 1, wherein the notification unit performs the notification when a hands-free call is switched off. Providing a proximity sensor that detects the proximity of an object,
The mobile phone according to claim 1, wherein the notification is made when a proximity is not detected by the proximity sensor in a voice call. An antenna,
A communication control unit for performing a voice call by switching between the first communication method and the second communication method;
An identification unit for identifying whether the communication with the radio base station is a voice call according to the first communication method or a voice call according to the second communication method;
An electric field strength specifying unit for determining the electric field strength of the signal received in the voice call;
A mobile phone comprising: a notification unit that notifies that the electric field strength of the received signal is low when the communication with the radio base station is a voice call according to the first communication method and the electric field strength is equal to or less than a threshold value . An antenna,
A touch sensor provided around the antenna;
A communication control unit for performing a voice call by switching between the first communication method and the second communication method;
An identification unit for identifying whether the communication with the radio base station is a voice call according to the first communication method or a voice call according to the second communication method;
A mobile phone comprising: a notification unit that warns the user not to touch the antenna when the communication with the wireless base station is a voice call according to the first communication method and the touch sensor detects contact of an object; phone. A mobile phone,
An antenna,
A communication control unit for performing a voice call by switching between the first communication method and the second communication method;
An identification unit for identifying whether the communication with the radio base station is a voice call according to the first communication method or a voice call according to the second communication method;
An electric field strength specifying unit for determining the electric field strength of the signal received in the voice call;
A touch sensor provided around the antenna;
And a notification unit,
When the communication with the radio base station is a voice call according to the first communication method, the electric field strength is equal to or lower than a threshold value, and the touch sensor detects contact of an object, the notification unit is connected to the antenna. Warn not to touch,
When the communication with the radio base station is a voice call according to the first communication method, the electric field strength is equal to or lower than a threshold value, and the touch sensor does not detect an object contact, the notification unit A mobile phone that warns you to change position or orientation.   The mobile phone according to claim 1, wherein the first communication method is a VoLTE method.

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