JP2014045382A - Portable telephone - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable telephone capable of adjusting the volume of a received voice without separating a thin casing away from an ear during telephone conversation.SOLUTION: A portable telephone comprises: an off-hook detection unit 101 that detects off-hook operation; a face area determination unit 102 that determines a face contact area 22 on a touch panel 11 on the basis of output of the touch panel 11 after the off-hook operation; a contact area determination unit 104 that determines a contact area 24 comprising continuous areas on the basis of the output of the touch panel 11 after the determination of the face contact area 22; an overlap determination unit 105 that determines whether or not the contact area 24 is overlapped with the face contact area 22; and a received voice volume adjustment unit 106 that performs adjustment of the volume of the received voice on the basis of the contact area 24 that is determined not to be overlapped with the face contact area 22 by the overlap determination unit 105.

Description

  The present invention relates to a mobile phone, and more particularly to an improvement of a mobile phone in which a touch panel and a speaker for outputting a received sound are provided on the front surface of a thin casing.

  Some conventional mobile phones include a push-type operation key or a pressure sensor for volume adjustment. In such a cellular phone, the volume of the received sound can be adjusted during a call by operating the operation keys and the pressure sensor. However, if the operation key or pressure sensor is placed on the front of the same terminal housing as the receiving speaker, the ear is pressed against the front of the terminal housing during a call. Difficult to operate. For this reason, in order to adjust the volume of the received sound by operating the operation key or the pressure sensor, the terminal housing has to be kept away from the ear, and there is a problem that the call is interrupted. In addition, when the operation key or the pressure sensor is arranged on the side surface of the terminal housing, there is a problem that the manufacturing cost increases.

  Recently, a mobile phone that can adjust the volume of a received sound during a call by a touch operation on the touch panel has been proposed (for example, Patent Document 1). The mobile phone described in Patent Document 1 displays a volume adjustment soft key on the touch panel, and adjusts the volume of the received sound based on a touch operation on the soft key. According to such a mobile phone, the volume of the received sound can be adjusted without providing a push-down operation key or pressure sensor for adjusting the volume. However, since it is necessary to perform a touch operation on the soft keys on the touch panel, to adjust the volume of the received sound by the touch operation, the terminal housing must be kept away from the ear, and the call is interrupted. It was inevitable.

JP 2012-95286 A

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a mobile phone that can adjust the volume of received sound without keeping the thin casing away from the ear during a call. In particular, an object of the present invention is to provide a mobile phone that can adjust the volume of a received sound by a touch operation on a touch panel. It is another object of the present invention to provide a mobile phone that can prevent the volume of the received sound from being erroneously adjusted when a part of the face contacts the touch panel during a call.

  Another object of the present invention is to provide a mobile phone capable of adjusting the volume of received sound without suppressing an increase in power consumption during a call and without keeping the thin casing away from the ear.

  A mobile phone according to a first aspect of the present invention is a mobile phone in which a touch panel and a speaker for outputting a reception sound are provided on the front surface of a thin housing, and includes an off-hook detection means for detecting an off-hook operation, Face area determination means for determining a face contact area on the touch panel based on the output of the touch panel, and a contact area for determining a contact area consisting of a continuous area based on the output of the touch panel after the determination of the face contact area Based on the determination means, the overlap determination means for determining whether or not the contact area overlaps with the face contact area, and the contact area determined as not overlapping with the face contact area by the overlap determination means Receiving sound volume adjusting means for adjusting the volume of the received sound.

  In this cellular phone, since the touch panel and the speaker for outputting the received sound are provided on the same surface of the thin housing, if the ear is brought close to the speaker during reception, a part of the face comes into contact with the touch panel. . The face contact area on the touch panel can be determined by the output of the touch panel after the off-hook operation. Therefore, if a contact area consisting of continuous areas is determined after determination of the face contact area, it is determined whether or not it overlaps with the face contact area, and the contact area determined not to overlap with the face contact area is used. Then, the volume of the received sound is adjusted.

  According to such a configuration, the above-mentioned contact area can be formed by touching a part on the touch panel that is not in contact with the face with a finger, and it is possible to receive a call without keeping the thin casing away from the ear during a call. The sound volume can be adjusted. In particular, the volume of the received sound can be adjusted by a touch operation on the touch panel. Also, since the volume of the received sound is adjusted by determining whether or not the contact area overlaps with the face contact area, the volume of the received sound may be incorrect if a part of the face touches the touch panel during a call. It is possible to prevent the adjustment.

  A mobile phone according to a second aspect of the present invention includes, in addition to the above configuration, a face area update unit that updates the face contact area with the contact area determined to overlap with the face contact area by the overlap determination unit. Configured.

  According to such a configuration, even if the contact state between the face and the touch panel has changed after the determination of the face contact area, the face contact area is correctly identified. Can be prevented.

  In addition to the above configuration, the mobile phone according to a third aspect of the present invention includes touch panel mode switching means for switching the operation mode of the touch panel to a power saving mode in which the resolution of the touch position is lower than the normal mode after the determination of the face contact area. The received sound volume adjusting means is configured to adjust the volume of the received sound based on the contact area determined after switching to the power saving mode.

  According to such a configuration, the operation mode of the touch panel can be switched to the power saving mode in which the power consumption is reduced by lowering the resolution of the contact position compared to the normal mode, thereby suppressing an increase in power consumption during a call. However, the volume of the received sound can be adjusted without moving the thin casing away from the ear. Also, since the volume adjustment is performed according to whether or not the contact area consisting of the continuous area overlaps the face contact area, the volume of the received sound is appropriately adjusted even in the operation mode with a low resolution of the contact position. be able to.

  In addition to the above configuration, the mobile phone according to the fourth aspect of the present invention is configured such that the received sound volume adjusting means adjusts the volume of the received sound based on the area of the contact area. According to such a configuration, the volume of the received sound can be adjusted by a simple method of touching the touch panel with one or more fingers.

  In the mobile phone according to the fifth aspect of the present invention, in addition to the above-described configuration, the reception volume adjustment unit is configured to receive the reception when the area of one or more continuous regions determined as the contact region is equal to or greater than a first threshold. Volume adjustment for increasing the volume of the sound is performed, and when the area of the one or more continuous regions is equal to or smaller than a second threshold that is smaller than the first threshold, the volume adjustment for decreasing the volume of the received sound is performed. Alternatively, when the area of the two or more continuous regions is larger than the second threshold and less than the first threshold, the volume level of the received sound is maintained as it is.

  According to such a configuration, the volume of the received sound can be increased or the volume of the received sound can be decreased by a simple method of touching the touch panel with one or more fingers. In addition, with respect to the area of the contact area that is determined not to overlap with the face contact area, an erroneous adjustment of the received sound volume due to an erroneous touch is prevented by providing a volume adjustment dead zone that maintains the current volume level as it is. Can do.

  A mobile phone according to a sixth aspect of the present invention includes, in addition to the above configuration, a proximity sensor that detects that a user's face has approached the touch panel, and the face contact area determination unit detects the approach of the face by the proximity sensor. It is configured to determine the contact area at the time of being the face contact area. According to such a configuration, the contact area between the user's face and the touch panel can be correctly determined.

  In the mobile phone according to the present invention, the volume of the received sound can be adjusted without keeping the thin casing away from the ear during a call. In particular, the volume of the received sound can be adjusted by a touch operation on the touch panel. Also, since the volume of the received sound is adjusted by determining whether or not the contact area overlaps with the face contact area, the volume of the received sound may be incorrect if a part of the face touches the touch panel during a call. It is possible to prevent the adjustment.

  Further, in the mobile phone according to the present invention, the operation mode of the touch panel can be switched to the power saving mode in which the power consumption is reduced by lowering the resolution of the contact position as compared with the normal mode. While being suppressed, the volume of the received sound can be adjusted.

It is the perspective view which showed one structural example of the mobile telephone 1 by embodiment of this invention. It is explanatory drawing which showed typically an example of the usage condition of the mobile telephone 1 of FIG. 1, and the mode at the time of reception is shown. FIG. 2 is a diagram showing an example of an operation at the time of a call in the mobile phone 1 of FIG. 1 and shows a face contact area 22 on the touch panel 11. FIG. 2 is a diagram showing an example of an operation during a call in the mobile phone 1 of FIG. 1, and shows contact areas 23 and 24 determined after the face contact area 22 is determined. It is the figure which showed an example of the operation | movement at the time of the telephone call in the mobile telephone 1 of FIG. 1, and the mode of the touch operation | movement with the finger | toe 4 for adjusting the volume of a received sound is shown. FIG. 2 is a block diagram illustrating an example of a functional configuration in the mobile phone 1 of FIG. 1. It is the block diagram which showed the structural example of CPU30 of FIG. 7 is a flowchart showing an example of an operation during a call in the mobile phone 1 of FIG.

<Mobile phone 1>
FIG. 1 is a perspective view showing an example of the configuration of a mobile phone 1 according to an embodiment of the present invention. The mobile phone 1 includes a touch panel 11 and a speaker 12 for receiving received sound output provided on the front surface of a thin housing 10. It is shown. The mobile phone 1 is a terminal device having a size that can be held by one hand, and includes a thin housing 10, a touch panel 11, a speaker 12 for receiving a received sound, a proximity sensor 13, and a transmitter for inputting a transmitted sound. Microphone 14 and operation keys 15a to 15c.

  The thin casing 10 is a terminal casing having a thin and vertically long rectangular parallelepiped shape. The touch panel 11, the speaker 12, the proximity sensor 13, the microphone 14, and the operation keys 15 a to 15 c are disposed on the same main surface of the thin housing 10. The speaker 12 is a sound output device for outputting a received sound. The microphone 14 is a voice input device for inputting a transmission sound.

  The touch panel 11 includes a touch panel display having a rectangular display screen and a touch panel sensor that detects a touch operation on the display screen. For example, an LCD (Liquid Crystal Display) is used for the touch panel display, and a planar detection element capable of multipoint detection by a capacitive method is used for the touch panel sensor.

  The proximity sensor 13 is a face detection unit for detecting that the user's face has approached the touch panel 11. For example, the proximity sensor 13 is a capacitance type sensor that detects a change in capacitance when the face approaches.

  The operation keys 15a to 15c are physical keys to which various functions are assigned in advance, and the assigned functions are executed by a user's pressing operation. For example, the operation key 15a is a return key for returning to the previous screen. The operation key 15b is a home key for displaying a home screen. The operation key 15c is a menu key for displaying a menu screen.

  The speaker 12 and the proximity sensor 13 are disposed between the touch panel 11 and the upper end of the thin casing 10, and the microphone 14 and the operation keys 15 a to 15 c are disposed between the touch panel 11 and the lower end of the thin casing 10. Yes. That is, the speaker 12 and the microphone 14 are arranged on opposite sides of the touch panel 11.

  In the mobile phone 1, the volume of the received sound can be adjusted without moving the thin casing 10 away from the ear during a call. In particular, the volume of the received sound can be adjusted by a simple touch operation such as touching the touch panel 11 with a finger.

  FIG. 2 is an explanatory diagram schematically showing an example of a usage mode of the mobile phone 1 of FIG. 1, and shows a state during reception. During reception, the ear 2 a is pressed against the speaker 12 of the mobile phone 1 while holding the mobile phone 1 with one hand 3. At this time, since the touch panel 11 and the speaker 12 are provided on the same surface of the thin casing 10, a part of the user's face 2 comes into contact with the touch panel 11. For example, the ear 2a, chin, and cheek come into contact with the touch panel 11.

  On the other hand, since the microphone 14 is disposed on the opposite side of the speaker 12 with respect to the longitudinal direction of the thin casing 10, the face 2 is close to the position of the mouth 2 b and on the touch panel 11 near the microphone 14. There will be an area that is not in contact with. By touching a part on the touch panel 11 that is not in contact with the face 2 with a finger, the volume of the received sound during a call is adjusted.

<Face contact area 22>
FIG. 3 is a diagram showing an example of an operation at the time of a call in the mobile phone 1 of FIG. 1, and the face contact area 22 on the touch panel 11 is shown. The face contact area 22 is a contact area between the face 2 and the touch panel 11 and is determined based on the output of the touch panel 11 after the off-hook operation.

  The off-hook operation is a call operation when making a call by designating a destination or a response operation when receiving a call, and includes a predetermined touch operation on the touch panel 11. The face contact area 22 consists of one continuous area. For example, the contact area when the proximity sensor 13 detects the approach of the face 2 is determined as the face contact area 22.

  In the mobile phone 1, the operation mode of the touch panel 11 is switched between the normal mode and the power saving mode based on the detection result by the proximity sensor 13. The power saving mode is an operation mode in which the power consumption is reduced as compared with the normal mode by lowering the resolution of the contact position and the resolution of the contact time. By setting the operation mode of the touch panel 11 to the power saving mode, power consumption can be suppressed, noise can be reduced, and erroneous adjustment of the reception volume can be suppressed.

  For example, in the normal mode, the resolution of the contact position is about the same as the screen resolution of the touch panel display, and the scan driving speed is about 60 Hz. On the other hand, in the power saving mode, the resolution of the contact position is about the size of a finger, for example, about 5 mm square, and the scan driving speed is about 5 Hz.

  In the power saving mode, the detection surface of the touch panel sensor is divided into a large number of detection areas 21 that are coarser than those in the normal mode, and the contact position is detected in units of detection areas 21. The face contact area 22 is a continuous area composed of two or more adjacent detection areas 21. In this example, rectangular detection areas 21 are arranged in a matrix of 6 rows and 13 columns.

<Contact areas 23, 24>
FIG. 4 is a diagram showing an example of an operation during a call in the mobile phone 1 of FIG. 1, and shows contact areas 23 and 24 determined after the face contact area 22 is determined. (A) in the figure shows a contact area 23 that overlaps with the face contact area 22, and (b) shows a contact area 24 that does not overlap with the face contact area 22.

  The contact areas 23 and 24 are both continuous areas, and are determined based on the output of the touch panel 11 after determining the face contact area 22. A part of the contact area 23 overlaps with the face contact area 22. Such a contact area 23 is formed when the contact state between the face 2 and the touch panel 11 changes after the determination of the face contact area 22. Therefore, the contact area 23 is determined as a new face contact area, and the face contact area 22 is updated by the contact area 23.

  On the other hand, the contact area 24 does not overlap with the face contact area 22 and is an area isolated from the face contact area 22. Such a contact area 24 is formed by touching a part on the touch panel 11 that is not in contact with the face 2 with a finger. Therefore, if the contact area 24 is determined, it is determined that a touch operation for volume adjustment has been performed, and the volume of the received sound is adjusted based on the contact area 24.

  FIG. 5 is a diagram showing an example of an operation at the time of a call in the mobile phone 1 of FIG. 1, and shows a touch operation with the finger 4 for adjusting the volume of the received sound. (A) in the figure shows a case where the touch panel 11 is touched with two fingers 4, and (b) shows a case where the touch panel 11 is touched with one finger 4.

  The volume adjustment of the received sound when the ear 2a is pressed against the speaker 12 is based on the areas of the contact areas 24a to 24c formed by touching a part on the touch panel 11 that is not in contact with the face 2 with a finger. Done.

  The contact areas 24 a and 24 b are formed by touching the touch panel 11 with two fingers 4, respectively. The areas of the contact regions 24a and 24b are represented by the number of detection areas 21 selected by the contact of the finger 4, and both are two. On the other hand, the contact area 24c is formed by touching the touch panel 11 with one finger 4, and the area of the contact area 24c is two.

  Specifically, when the area of one or more continuous regions determined as the contact region 24 is equal to or greater than the determination threshold Th1, volume adjustment is performed to increase the volume of the received sound. On the other hand, when the area of one or more continuous regions determined as the contact region 24 is equal to or smaller than the determination threshold Th2 that is smaller than the determination threshold Th1, volume adjustment is performed to lower the volume of the received sound. When the area of one or more continuous regions determined as the contact region 24 is larger than the determination threshold Th2 and less than the determination threshold Th1, the volume level of the received sound is maintained as it is.

  Therefore, for example, by setting the determination threshold value Th1 = 4 and the determination threshold value Th2 = 2 in advance, in the case of (a) in the figure, the total area of the contact areas 24a, 24b is four. Volume adjustment is performed to increase the sound volume. On the other hand, in the case of (b) in the figure, since the area of the contact region 24c is two, the volume adjustment for lowering the volume of the received sound is performed.

  FIG. 6 is a block diagram showing an example of a functional configuration in the mobile phone 1 of FIG. The cellular phone 1 includes a touch panel sensor 11a, a touch panel display 11b, a speaker 12, a proximity sensor 13, a microphone 14, a CPU 30, a cellular communication unit 31, an audio processing unit 32, a display control unit 33, and a memory 34.

  The touch panel 11 includes a touch panel sensor 11a and a touch panel display 11b. The touch panel sensor 11 a is an operation detection unit that detects a touch operation on the display screen, and outputs a detection signal to the CPU 30. The touch panel display 11b is a display unit having a display screen.

  The CPU 30 is a main control unit that controls each device. The cellular communication unit 31 is a wireless unit that communicates with a base station and performs communication and transmission / reception of electronic mails with other communication terminals via a mobile communication network. The voice processing unit 32 performs input / output processing of a voice signal, processes the received voice input from the CPU 30 and outputs it to the speaker 12, and processes the transmitted voice collected by the microphone 14 and inputs it to the CPU 30. To do.

  The display control unit 33 controls the touch panel display 11b to display a home screen or a menu screen. The memory 34 holds a control program for the CPU 30 and received data.

<CPU 30>
FIG. 7 is a block diagram showing a configuration example of the CPU 30 in FIG. The CPU 30 includes an off-hook detection unit 101, a face region determination unit 102, a region information storage unit 103, a contact region determination unit 104, a duplication determination unit 105, a received sound volume adjustment unit 106, a face region update unit 107, and a touch panel mode switching unit 108. Composed.

  The off-hook detection unit 101 detects an off-hook operation based on the detection signal from the touch panel sensor 11 a and generates a communication control signal for controlling the cellular communication unit 31. The face area determination unit 102 determines the face contact area 22 based on the detection signal of the touch panel sensor 11a after the off-hook operation. Specifically, the contact area when the proximity sensor 13 detects the approach of the face is determined as the face contact area 22. The area information storage unit 103 holds area information indicating the position of the face contact area 22.

  The contact area determination unit 104 determines the contact area 24 based on the detection signal of the touch panel sensor 11a after the determination of the face contact area 22. For example, as the contact area 24, one or more continuous areas are repeatedly determined at regular intervals. The overlap determination unit 105 determines whether or not the contact area 24 overlaps with the face contact area 22, and outputs the determination result to the received sound volume adjustment unit 106 and the face area update unit 107.

  The received sound volume adjustment unit 106 generates a volume control signal for adjusting the volume of the received sound based on the contact area 24 that is determined not to overlap the face contact area 22 by the overlap determination unit 105, and performs voice processing. To the unit 32. Specifically, when the area of one or more continuous regions determined as the contact region 24 is equal to or greater than the determination threshold Th1, volume adjustment is performed to increase the volume of the received sound.

  Further, when the area of one or more continuous regions determined as the contact region 24 is equal to or less than the determination threshold Th2, volume adjustment is performed to reduce the volume of the received sound. When the area of one or more continuous regions determined as the contact region 24 is larger than the determination threshold Th2 and less than the determination threshold Th1, the volume level of the received sound is maintained as it is.

  The face area update unit 107 rewrites the area information in the area information storage unit 103 so as to update the face contact area 22 with the contact area 24 determined to be overlapped with the face contact area 22 by the overlap determination unit 105.

  The touch panel mode switching unit 108 generates a touch panel control signal for switching the operation mode of the touch panel 11 between the normal mode and the power saving mode based on the detection signal of the proximity sensor 13.

  Specifically, after the proximity of the face 2 is detected by the proximity sensor 13 and the face contact area 22 is determined, the operation mode of the touch panel 11 is switched from the normal mode to the power saving mode. When the proximity sensor 13 detects that the face 2 has moved away from the touch panel 11, the operation mode is switched from the power saving mode to the normal mode.

  In the power saving mode, the operation of turning off the screen display is performed along with the reduction of the resolution of the contact position and the reduction of the scan driving speed. The screen display off operation is performed by stopping display output or turning off the backlight. The received sound volume adjustment unit 106 adjusts the volume of the received sound based on the contact area 24 determined after switching to the power saving mode.

  Steps S101 to S111 in FIG. 8 are flowcharts showing an example of an operation during a call in the mobile phone 1 in FIG. First, if the proximity sensor 13 detects the approach of the face 2 (step S101), the face area determination unit 102 determines the face contact area 22 based on the detection signal of the touch panel sensor 11a (step S102). After determining the face contact area 22, the touch panel mode switching unit 108 switches the operation mode of the touch panel 11 to the power saving mode (step S103).

  Next, after the transition to the power saving mode, the contact area determination unit 104 maintains the state in which the face 2 is detected, and if the proximity sensor 13 does not detect that the face 2 has moved away from the touch panel 11, The contact area 24 is determined based on the detection signal of the sensor 11a (steps S104 and S105).

  If the contact area 24 does not overlap the face contact area 22, the received sound volume adjustment unit 106 calculates the area of the contact area 24, adjusts the received sound volume according to the area, and performs the processing procedure of step S 104. (Steps S106 to S108). On the other hand, if the contact area 24 overlaps with the face contact area 22, the face area update unit 107 updates the face contact area 22 with the contact area 24, and proceeds to the processing procedure of step S104 (steps S106 and S109). ).

  If the proximity sensor 13 detects that the face 2 has moved away from the touch panel 11 after shifting to the power saving mode, the touch panel mode switching unit 108 switches the operation mode to the normal mode (steps S104 and S110). The processing procedure after step S101 is repeated until the end of the call is instructed, and when the end of the call is instructed, this process ends (step S111).

  According to the present embodiment, the contact region 24 can be formed by touching a part on the touch panel 11 that is not in contact with the face 2 with the finger 4, and the thin casing 10 is removed from the ear 2 a during a call. The volume of the received sound can be adjusted without moving away. In particular, the volume of the received sound can be adjusted by a touch operation on the touch panel 11. Further, since it is determined whether or not the contact area 24 overlaps with the face contact area 22 and the volume of the received sound is adjusted, when a part of the face 2 touches the touch panel 11 during a call, It is possible to prevent the volume from being adjusted by mistake.

  In addition, even if the contact state between the face 2 and the touch panel 11 changes after the determination of the face contact area 22, the face contact area 22 is correctly identified, so that erroneous adjustment of the received sound volume is effectively prevented. be able to.

  Moreover, since the operation mode of the touch panel 11 can be switched to the power saving mode in which the power consumption is reduced by lowering the resolution of the contact position and the resolution of the contact time compared to the normal mode, the increase in power consumption during a call is suppressed. However, the volume of the received sound can be adjusted without moving the thin casing 10 away from the ear 2a. Further, since the volume adjustment is performed according to whether or not the contact area 24 formed of the continuous area overlaps with the face contact area 22, even if the operation mode has a low contact position resolution or contact time resolution, the received sound Can be adjusted appropriately.

  In the present embodiment, the example in which the contact area when the proximity sensor 13 detects the approach of the face is determined as the face contact area 22 has been described, but the present invention provides a method for determining the face contact area 22. However, the present invention is not limited to this. That is, the present invention also includes a configuration in which the face contact area 22 is determined based on the contact area detected when an off-hook operation is detected or until a predetermined time elapses after the call is established. Is included. For example, a contact area whose area exceeds a certain value may be determined as the face contact area 22.

  In the present embodiment, an example in which the proximity sensor 13 is used to detect the approach of the face 2 has been described, but the present invention does not limit the method of detecting the approach of the face 2 to this. For example, the proximity sensor 13 may not be provided, and the configuration may be such that it is determined whether or not the user's face 2 has approached the touch panel 11 based on a detection result in a specific region on the touch panel 11.

  In the present embodiment, an example in which the operation mode of the touch panel 11 is switched between the normal mode and the power saving mode based on the detection signal of the proximity sensor 13 has been described. The present invention can also be applied to a configuration that maintains the normal mode regardless of whether or not the approach of the face 2 is detected.

  In the present embodiment, an example in which the volume of the received sound is adjusted according to the area of the contact area 24 that does not overlap with the face contact area 22 has been described. However, the present invention overlaps with the face contact area 22. A configuration in which the volume of the received sound is adjusted according to the shape of the contact area 24 that is not included is also included. For example, the configuration may be such that the volume of the received sound is increased if the contact area 24 is vertically long or horizontally long, and the volume of the received sound is decreased if the contact area 24 is square.

  Further, in the present embodiment, an example in which the volume of the received sound is adjusted by touching the touch panel 11 without moving the thin casing 10 away from the ear 2a during a call has been described. However, the present invention can also be applied to a configuration in which various functions during a call are executed by the touch operation on the touch panel 11 without moving the speaker 12 of the thin casing 10 away from the ear 2a. For example, the present invention can be applied to a configuration in which an on-hook function for terminating a call is executed by a touch operation on the touch panel 11.

DESCRIPTION OF SYMBOLS 1 Cellular phone 10 Thin housing | casing 11 Touch panel 12 Speaker 13 for receiving sound output Proximity sensor 14 Microphone 21 for transmitting sound input Detection area 22 Face contact area 23, 24, 24a-24c Contact area 30 CPU
31 Cellular communication unit 32 Audio processing unit 101 Off-hook detection unit 102 Face region determination unit 103 Region information storage unit 104 Contact region determination unit 105 Duplicate determination unit 106 Received sound volume adjustment unit 107 Face region update unit 108 Touch panel mode switching unit 2 Face 2a Ear 3 hands 4 fingers

Claims (6)

In a mobile phone in which a touch panel and a speaker for receiving sound output are provided on the front surface of a thin casing,
Off-hook detection means for detecting off-hook operation;
Face area determination means for determining a face contact area on the touch panel based on the output of the touch panel after the off-hook operation;
Contact area determination means for determining a contact area consisting of continuous areas based on the output of the touch panel after the determination of the face contact area;
Overlap determination means for determining whether or not the contact area overlaps with the face contact area;
A mobile phone comprising: a received sound volume adjusting means for adjusting a received sound volume based on the contact area determined not to overlap with the face contact area by the overlap determining means.   2. The mobile phone according to claim 1, further comprising face area update means for updating the face contact area with the contact area determined to overlap with the face contact area by the overlap determining means. Touch panel mode switching means for switching the operation mode of the touch panel to a power saving mode in which the resolution of the touch position is lower than the normal mode after determining the face contact area;
3. The mobile phone according to claim 1, wherein the reception volume adjustment unit adjusts the volume of the reception sound based on the contact area determined after switching to the power saving mode.   The mobile phone according to any one of claims 1 to 3, wherein the received sound volume adjusting means adjusts the volume of the received sound based on an area of the contact area.   The received sound volume adjusting means adjusts the sound volume to increase the volume of the received sound when the area of one or more continuous regions determined as the contact region is equal to or larger than a first threshold, and When the area of the continuous region is less than or equal to the second threshold value smaller than the first threshold value, volume adjustment is performed to lower the volume of the received sound, and the area of the one or more continuous regions is greater than the second threshold value. 5. The mobile phone according to claim 4, wherein the volume level of the received sound is maintained as it is when it is less than the first threshold value. A proximity sensor that detects that the user's face has approached the touch panel;
The mobile phone according to any one of claims 1 to 5, wherein the face area determination means determines a contact area when a proximity of a face is detected by the proximity sensor as the face contact area.

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