JP2005252539A - Portable terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable terminal that can be transited to a state that a display panel is folded toward the outside, and can appropriately display a screen and output a stereo sound without requiring operation for passing the terminal from one hand to the other. <P>SOLUTION: A portable telephone 1 comprises the display panel 5, a first case 2 in which three speakers A1-A3 for outputting a stereo sound are provided, a second case 3 having an operation panel 6, and a connection section 4 for foldably connecting the first case 2 to the second one 3. The portable telephone 1 can transit a first terminal state that the first and second cases 2, 3 are developed, and a second terminal state that the display panel 5 is folded toward the outside. Additionally, the portable telephone 1 has a state detection control unit 28 for detecting that the terminal is in which of the terminal states, and a speaker drive control unit 24 for driving the respective speakers A1-A3 based on the detected result of the terminal state. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a mobile terminal, and more particularly to an improvement of a mobile terminal such as a foldable mobile phone provided with three speakers for stereo sound output.

In recent years, mobile phones that receive TV (television) broadcasts and display images have been commercialized and have become a hot topic. In such a mobile phone, if sound can be output in stereo in accordance with the image display of a TV program or the like, stereo sound can be enjoyed together with video, which is convenient. Examples of conventional portable terminals capable of stereo audio output include those described in Patent Documents 1 and 2. The mobile terminals described in these documents perform control to switch the left and right channels in stereo sound for the screen display direction and multiple speakers depending on whether the display screen is in a portrait state or a landscape state. Yes.
JP 2003-78601 A JP 2003-244786 A

  In the conventional portable terminal as described above, in the case of a portable terminal that can be folded with the display panel facing outward, the display panel is folded outward with the operation panel and the display panel being unfolded toward the front. When the state is changed to the viewer state (called the viewer style state), the screen display is turned upside down (inverted state), and there is a problem that stereo sound is not output correctly. That is, the unfolded state and the viewer style state cannot be discriminated by identifying whether the display screen is in the vertically long state or the horizontally long state because the directions of the display panels differ from each other by 180 °. For this reason, switching of the screen display direction and switching of the left and right channels for each speaker cannot be performed correctly, and it is inconvenient because the portable terminal must be changed every time the viewer is changed from the expanded state to the viewer style state.

  The present invention has been made in view of the above circumstances, and is a portable terminal capable of transitioning to a state in which the display panel is folded outward. It aims at providing the portable terminal which can perform output appropriately. In particular, an object of the present invention is to provide a portable terminal capable of correctly switching the left and right channels for each speaker even when the state is changed from the expanded state to the viewer style state.

  Another object of the present invention is to provide a mobile terminal capable of appropriately performing screen display and stereo sound output and having improved operability at the time of incoming call. In particular, it is an object of the present invention to provide a portable terminal capable of making a call while maintaining the state even when an incoming call is received in the viewer style state without increasing the number of speakers.

  A portable terminal according to the present invention has a display panel, a first casing provided with three speakers for stereo sound output, a second casing having an operation panel, the first casing, A first terminal state in which the first casing and the second casing are unfolded, and a display panel that is folded toward the outside. A portable terminal capable of transitioning between two terminal states, a state detecting means for detecting which terminal state the portable terminal is in, and a speaker for driving each speaker based on the detection result of the terminal state Drive means.

  According to such a configuration, since each speaker is driven based on the detection result of whether the mobile terminal is in the first or second terminal state, stereo audio output is performed for each terminal state. Can be done appropriately. In particular, even if the display panel is shifted from the unfolded state to the folded state, the left and right channels can be correctly switched for each speaker. be able to.

  In the mobile terminal according to the present invention, in addition to the above-described configuration, the second casing has a microphone for transmission provided at an end opposite to the connecting portion, and each speaker is connected to the first casing. The body is arranged at the end opposite to the connecting portion and the end on the connecting portion side with the display panel sandwiched between the ends, and is also configured to be used as a speaker for reception.

  According to such a configuration, since each speaker is also used for reception, the speaker arranged at the end opposite to the connection portion can be used for reception in the first terminal state, and the connection portion The speaker arranged at the end on the side can be used for receiving in the second terminal state. In other words, it is possible to receive a call using a speaker located far from the microphone in any of the terminal states in the expanded state and the display panel folded outward, thus improving operability at the time of incoming call. Can be made. In particular, even when there is an incoming call in the second terminal state, it is possible to make a call while maintaining the terminal state. In addition, it is possible to output stereo speech or make a call according to the terminal state without increasing the number of speakers.

  In addition to the above configuration, the portable terminal according to the present invention includes a display direction control unit that switches the screen display direction on the display panel based on the detection result of the terminal state. According to such a configuration, since the orientation of the screen display can be switched based on the detection result of whether the mobile terminal is in the first or second terminal state, it is necessary to move the mobile terminal. In addition, the screen display can be appropriately performed for each terminal state.

  According to the mobile terminal of the present invention, it is possible to appropriately perform screen display and stereo sound output for each terminal state. In particular, even if the display panel is shifted from the unfolded state to the folded state, the left and right channels can be correctly switched for each speaker. be able to.

  Also, in any terminal state with the expanded state and the display panel folded outward, it is possible to receive a call using a speaker located far from the microphone, so the screen is displayed according to the terminal state. Stereo sound output and telephone call can be performed appropriately. In particular, even when there is an incoming call in the second terminal state without an increase in the number of speakers, it is possible to make a call while maintaining the terminal state, thereby improving operability at the time of incoming call. be able to.

Embodiment 1 FIG.
FIGS. 1A and 1B are plan views showing an example of a schematic configuration of a mobile terminal according to Embodiment 1 of the present invention, in which a foldable mobile phone 1 is shown. FIG. 1A shows the operating surface side in the unfolded state, and FIG. 1B shows the back surface side. The mobile phone 1 according to the present embodiment is a small portable electronic device that outputs stereo sound in accordance with image display of a TV program or the like in an unfolded state and a state in which the display screen is folded outward. Control is being performed.

  The cellular phone 1 includes a casing (first casing) 2 provided with a display panel 5, a casing (second casing) 3 provided with an operation panel 6, and the casing 2, 3 and a connecting portion 4 that connects the three in a foldable manner.

  The display panel 5 includes a rectangular display screen, and for example, a vertically long liquid crystal display is used. Here, in the state in which the longitudinal direction of the display screen is the vertical direction of the display panel 5 and the housing 2 and the housing 3 are unfolded and the display panel 5 and the operation panel 6 are both facing forward, the vertical direction of the operation panel 6 is It shall match. In addition, a direction perpendicular to the vertical direction (vertical direction) is defined as the left-right direction of the display panel 5 and the operation panel 6. The housing 2 is provided with three speakers A1 to A3 for stereo sound output. The speakers A1 to A3 are respectively disposed at an end portion on the opposite side of the connecting portion 4 in the housing 2 and an end portion on the connecting portion 4 side with the display panel 5 interposed therebetween.

  Here, one speaker is disposed at the end opposite to the connecting portion 4 and this speaker is referred to as a first speaker A1. Further, two other speakers are arranged on the left and right at the end on the connecting portion 4 side. Among these, the left speaker toward the display panel 5 is the second speaker A2, and the right speaker is the third speaker A3. And

  In the housing 2, a terminal state detection magnet 9 is embedded at the end opposite to the connecting portion 4. The magnet 9 is disposed on the left side of the first speaker A1 toward the display panel 5.

  The operation panel 6 includes a plurality of keys for executing various functions based on operation inputs by the user. For example, a key for switching the screen display direction, a numeric keypad used for inputting a number at the time of outgoing call and a character input at the time of mail transmission, an outgoing key (off hook key), an end key (on hook key), and a direction key are provided. .

  The housing 3 is provided with two Hall elements 10 and 11 for detecting a terminal state, a microphone (microphone) 12 for transmission, and an antenna 13 for wireless communication. The Hall elements 10 and 11 and the microphone 12 are disposed at the end opposite to the connecting portion 4. The Hall elements 10 and 11 are magnetic sensors that use the Hall effect, and a current flows (becomes on) based on a change in the magnetic field.

  Here, the hall elements 10 and 11 are arranged on the left and right sides of the operation panel 6. Of these, the left hall element of the microphone 12 is the first hall element 10, and the right hall element is the second hall element 11. And Each Hall element 10 and 11 is embedded in the housing 3. The antenna 13 is provided on the side surface of the housing 3 on the connection portion 4 side.

  The connecting portion 4 is connected to the housing 3 so as to be rotatable around two rotation shafts 7 and 8 orthogonal to the housing 2. That is, the housings 2 and 3 are connected by the rotation shaft 7 that enables the display panel 5 to rotate toward the operation panel 6 and the rotation shaft 8 that is parallel to the longitudinal direction of the display panel 5. By using such a connecting portion 4, the display panel 5 is folded inward (stored state), the housings 2 and 3 are unfolded (first terminal state), and the display panel 5. Can be shifted from the state folded toward the outside (second terminal state).

  2A, 2B, 3, 4A and 4B are external perspective views showing an example of state transition in the mobile phone of FIG. 2A shows a storage state in which the housings 2 and 3 are folded with the display panel 5 and the operation panel 6 facing inward, and FIG. 2B shows the display panel 5 and the operation panel 6. A first terminal state is shown in which the casings 2 and 3 are deployed in the same direction.

  The housed state is suitable for carrying because it can prevent an erroneous operation and can protect the display panel 5. In the storage state, control is performed to turn off driving of the liquid crystal display and the speakers A1 to A3. Such a storage state is detected when the first Hall element 10 is turned on. That is, when the magnet 9 approaches the first Hall element 10 during storage, the magnetic field in the first Hall element 10 changes. Based on the change in the magnetic field, it is detected that the first Hall element 10 is turned on and is in the housed state.

  The first terminal state is suitable for performing an operation input because the display panel 5 and the operation panel 6 face the same direction. That is, the user can see the screen display on the display panel 5 while operating the keys on the operation panel 6.

  In the first terminal state, stereo sound is output using the speakers A2 and A3 or the speakers A1 and A3. The transition from the housed state to the first terminal state is detected when the first Hall element 10 changes from the on state to the off state. That is, when the magnet 9 moves away from the first Hall element 10 during deployment, the magnetic field in the first Hall element 10 changes. Based on the change in the magnetic field, it is detected that the first Hall element 10 is in the OFF state and in the expanded state.

  FIG. 3 shows a state in which the housing 2 is rotated around a rotation axis 8 parallel to the longitudinal direction of the display panel 5 with respect to the housing 3. The housing 2 can be rotated by 180 ° or more around the rotation axis 8 with respect to the housing 3. That is, by rotating the housing 2, the front and rear of the housing 2 can be reversed with respect to the housing 3.

  FIG. 4A shows a state in which the front and rear of the housing 2 are reversed with respect to the housing 3, and FIG. 4B shows that the back surface of the housing 2 is folded against the operation panel 6. A second terminal state in which the display panel 5 faces outward is shown.

  In the second terminal state, stereo sound is output using the speakers A2 and A3 or the speakers A1 and A3. Such a first terminal state is detected when the second Hall element 11 is turned on. That is, the magnetic field in the second Hall element 11 changes as the magnet 9 approaches the second Hall element 11 during folding. Based on the change in the magnetic field, it is detected that the second Hall element 11 is turned on and is in the second terminal state. By using the Hall elements 10 and 11, the terminal state can be detected by a non-contact method, so that the durability is superior to that of the contact method.

  Instead of the Hall elements 10 and 11, an MR (Magneto Resistive) element may be used for detecting the terminal state. The MR element is a magnetic sensor that uses the magnetoresistive effect, and can detect the terminal state in a non-contact manner, as in the case of the Hall elements 10 and 11.

  FIG. 5 is a block diagram showing an example of the configuration in the mobile phone of FIG. This mobile phone 1 includes an antenna 13, speakers A1 to A3, a microphone 12, Hall elements 10 and 11, a radio unit 21, a communication control unit 22, a main control unit 23, a speaker drive control unit 24, a transmission control unit 25, a display The control unit 26, the operation input unit 27, and the state detection control unit 28 are configured.

  The radio unit 21 performs transmission / reception processing of communication data exchanged with the base station via the antenna 13. The wireless unit 21 can receive a TV broadcast including stereo audio data. The communication control unit 22 controls various communications. For example, TV broadcast reception control, transmission / reception control for downloading an application program on a website from a web server, outgoing call control at the time of outgoing call, call control, incoming call control at the time of incoming call, electronic mail transmission / reception control are performed. .

  The operation input unit 27 performs input processing based on key operations on the operation panel 6. The transmission control unit 25 performs input control of an audio signal input from the microphone 12 during a call.

  The state detection control unit 28 is a state detection unit that detects which terminal state the mobile phone 1 is in. That is, it is determined whether the housings 2 and 3 are in the housed state, the first terminal state, or the second terminal state based on on / off of the hall elements 10 and 11. Is done. Thereby, since the terminal state is automatically detected, it is possible to automatically switch between stereo sound output and image display.

  The display control unit 26 performs control to switch the screen display direction on the display panel 5. The switching of the orientation in the screen display is performed based on the detection result of the terminal state by the state detection control unit 28 and the operation input by the user. For example, the direction switching control (display direction control) is performed so that the screen display direction is the same in the first terminal state and the second terminal state toward the operation panel 6. That is, in both the unfolded state and the state in which the display panel 5 is folded outward, the screen display is automatically switched so as to be in an upright state. Usually, the user operates the terminal by holding the housing 3 having the operation panel 6. Therefore, by making the screen display direction with respect to the operation panel 6 the same in each terminal state, the user can browse the display screen without changing the terminal when the terminal state is changed. it can.

  Further, in the first terminal state or the second terminal state, control (display direction switching) is performed to switch the screen display direction to a predetermined direction based on the operation input. Here, it is assumed that switching to rotate the screen display by 90 ° is performed by a user operation input. Thereby, the user can switch the screen display to a desired direction as necessary. That is, it is possible to freely switch between the direction in which the screen display is erected in the vertical direction of the display panel 5 and the direction in which the screen display is erected in a direction perpendicular to the vertical direction (lateral direction).

  The speaker drive control unit 24 performs control to drive the speakers A1 to A3 during stereo sound output. The driving of the speakers A1 to A3 is performed based on the detection result of the terminal state by the state detection control unit 28 and the screen display direction, and the left and right channels in the stereo sound are switched.

  For example, the control for driving the speakers A1 to A3 by switching the left and right channels in the first terminal state and the second terminal state is performed. This switching control is performed so that the left and right of the stereo sound are the same in each terminal state toward the operation panel 6. In other words, in both the unfolded state and the state in which the display panel 5 is folded outward, the left and right sides of the operation panel 6 are switched correctly. Thereby, the user can view the display screen and the stereo sound appropriately without changing the terminal when the terminal state is changed.

  Further, in the first terminal state or the second terminal state, control for driving the speakers A1 to A3 by switching the left and right channels according to the screen display direction switched by the user's operation input is performed. That is, when the screen display orientation is switched by 90 ° in the unfolded state or the display panel 5 is folded outward, the screen display orientation is changed in accordance with the switching of the orientation. The left and right channels are switched so that the left and right are correct. Thereby, the user can switch the screen display to a desired direction as necessary, and can obtain a stereo sound output according to the direction of the screen display.

  6 (a) and 6 (b) are diagrams showing an example of the operation state of the mobile phone of FIG. 1. FIG. 6 (a) shows the screen display in the developed state in the vertical direction of the display panel 5. FIG. A state of stereo sound output when standing up is shown, and FIG. 6B shows a state of stereo sound output when the screen display stands upright in the horizontal direction of the display panel 5.

  In the unfolded state, when the screen display is set upright in the vertical direction, that is, in the longitudinal direction of the display screen in the display panel 5, the direction of the screen display becomes the same as the direction of the operation panel 6. Even if it exists, there exists an advantage that operation input is easy. In this case, stereo sound is output using the second speaker A2 and the third speaker A3. That is, control is performed such that the second speaker A2 on the left side toward the display screen is assigned to the left channel, and the third speaker A3 on the right side is assigned to the right channel. Thereby, the user can enjoy a stereo sound with an image | video at the time of TV broadcast reception.

  On the other hand, in the unfolded state, when the screen display is set upright in the horizontal direction, that is, in the direction perpendicular to the longitudinal direction of the display screen, the screen display is displayed in the case of a horizontally long image such as a TV program image. Can be done effectively.

  Assuming that the terminal is held with the right hand, the screen display may be erected in the right direction toward the display screen. In this case, stereo sound is output using the first speaker A1 and the third speaker A3. That is, control is performed in which the first speaker A1 on the left side is assigned to the left channel and the third speaker A3 on the right side is assigned to the right channel when the screen display is upright. Thus, the user can appropriately view the stereo sound together with the video when receiving a TV broadcast. In the unfolded state, the screen display orientation can be freely switched by a user key operation, and the speakers A1 to A3 to be driven are automatically switched according to the screen display orientation.

  Here, when the screen display is in the vertical direction at the time of stereo sound output, that is, when the screen display is upright in the vertical direction of the display panel 5, the control for turning off the driving for the first speaker A1 is performed. When the screen display is in the horizontal direction, control is performed to turn off driving for either the second speaker A2 or the third speaker A3. Thereby, power consumption can be reduced.

  Further, when the screen display on the display panel 5 is directed rightward during stereo audio output, that is, when the screen display is erected rightward toward the display screen, the third speaker A3 is assigned to the right channel, The speaker assigned to the right channel can be shared when the screen display is in the vertical direction. Thereby, the control of speaker allocation can be simplified.

  FIGS. 7A and 7B are diagrams showing an example of the operation state of the mobile phone of FIG. 1, and FIG. 7A shows the case where the screen display is in the vertical direction in the second terminal state. FIG. 6B shows a state of stereo audio output when the screen display is in the horizontal direction.

  In the second terminal state, that is, the state in which the display panel 5 is folded outward (viewer style state), if the screen display is displayed upright in the vertical direction, the screen display orientation of the operation panel 6 Since it is the same as the orientation, it is possible to continue browsing the screen without switching even if the state is changed from the expanded state to the viewer style state. In this case, stereo sound is output using the second speaker A2 and the third speaker A3. That is, control is performed in which the third speaker A3 on the left side is assigned to the left channel and the second speaker A2 on the right side is assigned to the right channel when the screen display is upright. Thereby, the user can enjoy a stereo sound with an image | video at the time of TV broadcast reception.

  On the other hand, in the viewer style state, if the screen display is displayed in the horizontal direction, that is, in the direction perpendicular to the longitudinal direction of the display screen on the display panel 5, a horizontally long image such as a TV program image is displayed. In this case, the screen display can be performed effectively.

  Again, assuming that the user has a terminal with the right hand, the screen display may be erected rightward toward the display screen in the viewer style state. In this case, stereo sound is output using the first speaker A1 and the third speaker A3. That is, the control is performed in which the third speaker A3 on the left side is assigned to the left channel and the first speaker A1 on the right side is assigned to the right channel while the screen display is upright. Thus, the user can appropriately view the stereo sound together with the video when receiving a TV broadcast.

  In addition, in the viewer style state, when the screen display is in the vertical direction when stereo sound is output, control is performed to turn off the driving for the first speaker A1. When the screen display is in the horizontal direction, control is performed to turn off driving for either the second speaker A2 or the third speaker A3. Thereby, power consumption can be reduced.

  In addition, when the direction of the screen display is rightward toward the display screen during stereo audio output, the third speaker A3 is allocated to the left channel, so that the screen display is allocated to the left channel depending on the vertical direction. A speaker can be shared. Thereby, the control of speaker allocation can be simplified.

  FIG. 8 is a diagram showing another example of the operation state of the mobile phone of FIG. 1, and shows a state of stereo audio output when the screen display is in the horizontal direction in the unfolded state. Assuming that the user has a terminal with his left hand, the screen display may be erected leftward toward the display screen in the expanded state. In this case, stereo sound is output using the first speaker A1 and the second speaker A2. That is, control is performed in which the second speaker A2 on the left side is allocated to the left channel and the first speaker A1 on the right side is allocated to the right channel when the screen display is upright. Thus, the user can appropriately view the stereo sound together with the video when receiving a TV broadcast.

  Steps S101 to S124 of FIGS. 9 to 11 are flowcharts showing an example of stereo sound output operation in the mobile phone of FIG. First, the state detection control unit 28 starts detecting the terminal state when the terminal is expanded from the stored state or when an operation input for switching the screen display direction is performed in the expanded state (steps S101 and S102).

  At this time, if the first Hall element 10 is in the on state, the terminal is determined to be in the housed state. If the first Hall element 10 is in the off state and the second Hall element 11 is in the on state, the terminal is determined to be in the viewer style state. If both the first Hall element 10 and the second Hall element 11 are in the off state, it is determined that the terminal is in the deployed state.

  When the terminal is in the housed state, the display control unit 26 performs control to turn off driving of the liquid crystal display, and the speaker drive control unit 24 performs control to turn off driving of the speakers A1 to A3 (steps S103 to S103). S105).

  On the other hand, when the terminal is in the viewer style state, control is performed according to whether the screen display is in the horizontal direction (steps S106 and S107). If the screen display is in the horizontal direction, the display control unit 26 turns on the liquid crystal display and controls the screen display to be rotated by 90 ° (step S108). At this time, the speaker drive control unit 24 performs control to allocate the first speaker A1 to the right channel, turn off the second speaker A2, and allocate the third speaker A3 to the left channel (steps S109 to S111). ).

  If the screen display is not in the horizontal direction, the display control unit 26 performs control to rotate the screen display direction on the liquid crystal display by 180 ° (step S112). At this time, the speaker drive control unit 24 controls to turn off the first speaker A1, assign the second speaker A2 to the right channel, and assign the third speaker A3 to the left channel (steps S113 to S115). ).

  When the terminal is in the unfolded state, control according to whether the screen display is in the horizontal direction is performed (steps S106 and S116). If the screen display is in the horizontal direction, the display control unit 26 turns on the liquid crystal display and controls to rotate the screen display direction by 270 ° (step S117). At this time, the speaker drive control unit 24 performs control to allocate the first speaker A1 to the left channel, turn off the second speaker A2, and allocate the third speaker A3 to the right channel (steps S118 to S120). ).

  If the screen display is not in the horizontal direction, the display control unit 26 controls the screen display on the liquid crystal display to be in the upright state (non-rotation state) (step S121). At this time, the speaker drive control unit 24 controls to turn off the first speaker A1, assign the second speaker A2 to the left channel, and assign the third speaker A3 to the right channel (steps S122 to S124). ).

  According to the present embodiment, since each speaker A1 to A3 is driven based on the detection result of whether the terminal is in the storage state, the unfolded state, or the viewer style state, it is appropriate for each terminal state. Stereo sound output can be performed automatically. In particular, even when the state is changed from the expanded state to the viewer style state, the left and right channels can be correctly switched for each of the speakers A1 to A3, so that the operation of changing the terminal is unnecessary and the convenience can be improved.

  In the present embodiment, the example in which the third speaker A3 is assigned to the right channel as the screen display direction is rightward in the expanded state has been described. However, the present invention is not limited to this. Instead of this, the second speaker A2 may be divided into the right channel.

  FIG. 12 is a diagram showing another example of the operation state of the mobile phone of FIG. 1, and shows a state of stereo audio output when the screen display direction is the right direction. In the expanded state, when the screen display is displayed upright to the display screen, the first speaker A1 is assigned to the left channel, and the second speaker A2 is assigned to the right channel. Even with such a configuration, the user can appropriately view the stereo sound together with the video when reproducing the video such as TV broadcast.

  In the present embodiment, an example in which the screen display direction is switched by a user operation input has been described, but the present invention is not limited to this. For example, the speakers A1 to A3 may be driven based on the screen display direction switched by the control program. That is, a program execution unit that executes a control program for generating an image by switching the screen display direction on the display panel 5 is provided, and the speaker drive control unit 24 adjusts the left and right channels according to the image direction switched by the control program. Make the allocation.

  For example, even if the screen display orientation is switched by the application program (content) downloaded from the website, the left and right channels are automatically switched, so stereo audio output that matches the video is performed. Can do.

  In the present embodiment, an example of a portable terminal that can fold the housing 2 with the display panel 5 facing the operation panel 6 with respect to the housing 3 has been described. However, the present invention is not limited to this. Absent. For example, the present invention can also be applied to a portable terminal in which the unfolded state and the viewer style state can be shifted from each other by rotating the housing 2 around a rotation axis perpendicular to the operation panel 6.

Embodiment 2. FIG.
FIG. 13 is a perspective view showing an example of a schematic configuration of a mobile terminal according to Embodiment 2 of the present invention, and shows a mobile phone 30 that can respond to an incoming call in the second terminal state. Compared with the mobile phone 1 (Embodiment 1) of FIG. 1, the mobile phone 30 according to the present embodiment has an off-hook process while retaining the terminal state when an incoming call is received in the second terminal state. This is different in that a side key 31 for executing the above is provided.

  In the cellular phone 30, the speakers A1 to A3 are also used as receiving speakers. That is, the speaker drive control unit 24 performs drive control of the speakers A1 to A3 during a call. In the first terminal state, that is, in the unfolded state, control is performed to drive the first speaker A1 that is the farthest from the microphone 12 and to turn off driving for the other two speakers A2 and A3. The audio output level during a call is set lower than that during stereo audio output.

  Further, in the second terminal state, that is, the viewer style state, either one of the second speaker A2 or the third speaker A3 that is the farthest from the microphone 12 is driven, and the other two speakers are driven. Control to turn off is performed. Here, it is assumed that the third speaker A3 on the left side is driven in a state where the screen display is upright. The audio output level during a call is set lower than that during stereo audio output.

  By using only a speaker that is at a position far from the microphone 12 for use during a call, operability can be improved and howling can be suppressed.

  Steps S201 to S216 in FIG. 14 and FIG. 15 are flowcharts showing an example of the operation of driving the speaker at the time of an incoming call in the mobile phone in FIG. First, when an incoming call is received, the state detection control unit 28 starts detection of a terminal state when an off-hook process is executed based on an operation input of a key on the operation panel 6 or the side key 31 (step S201, S202).

  At this time, if the first Hall element 10 is in the on state, the terminal is determined to be in the housed state. If the first Hall element 10 is in the off state and the second Hall element 11 is in the on state, the terminal is determined to be in the viewer style state. If both the first Hall element 10 and the second Hall element 11 are in the off state, it is determined that the terminal is in the deployed state.

  When the terminal is in the housed state, an on-hook process is executed, and the speaker drive control unit 24 performs control to turn off driving of the speakers A1 to A3 (steps S203 to S205).

  On the other hand, when the terminal is in the viewer style state, the display control unit 26 turns on the liquid crystal display and controls to rotate the screen display direction by 180 degrees (steps S206 and S207). At this time, the speaker drive control unit 24 controls to turn off the first speaker A1 and the second speaker A2 and drive the third speaker A3 at a low output level, thereby starting a call process ( Steps S208 to S211).

  When the terminal is in the unfolded state, the display control unit 26 turns on the liquid crystal display and controls the screen display to be in the upright state (non-rotating state) (step S212). At this time, the speaker drive control unit 24 controls the first speaker A1 to be driven at a low output level, and turns off the second speaker A2 and the third speaker A3, thereby starting a call process ( Steps S213 to S216).

  According to the present embodiment, since each speaker A1 to A3 is also used for reception, the speaker A1 disposed at the end opposite to the connecting portion 4 can be used for reception in the deployed state, The speaker A2 or A3 arranged at the end on the connection part 4 side can be used for receiving in the viewer style state. That is, since it is possible to receive a call using a speaker located far from the microphone 12 in any of the terminal state of the unfolded state and the viewer style state, the operability at the time of incoming call can be improved. In particular, even when there is an incoming call in the viewer style state, it is possible to make a call while maintaining the terminal state. In addition, it is possible to output stereo speech or make a call according to the terminal state without increasing the number of speakers.

It is the top view which showed an example of schematic structure of the portable terminal by Embodiment 1 of this invention. FIG. 2 is an external perspective view showing an example of state transition in the mobile phone of FIG. 1. FIG. 2 is an external perspective view showing an example of state transition in the mobile phone of FIG. 1. FIG. 2 is an external perspective view showing an example of state transition in the mobile phone of FIG. 1. FIG. 2 is a block diagram illustrating a configuration example in the mobile phone of FIG. 1. It is the figure which showed an example of the operation state in the mobile telephone of FIG. It is the figure which showed an example of the operation state in the mobile telephone of FIG. It is the figure which showed the other example of the operation state in the mobile telephone of FIG. 3 is a flowchart showing an example of stereo sound output operation in the mobile phone of FIG. 1. 3 is a flowchart showing an example of stereo sound output operation in the mobile phone of FIG. 1. 3 is a flowchart showing an example of stereo sound output operation in the mobile phone of FIG. 1. It is the figure which showed the other example of the operation state in the mobile telephone of FIG. It is the perspective view which showed an example of schematic structure of the portable terminal by Embodiment 2 of this invention. 14 is a flowchart showing an example of speaker driving operation at the time of incoming call in the mobile phone of FIG. 14 is a flowchart showing an example of speaker driving operation at the time of incoming call in the mobile phone of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,30 Mobile phone 2 1st housing | casing 3 2nd housing | casing 4 Connection part 5 Display panel 6 Operation panel 7, 8 Rotating shaft 9 Magnet 10, 11 Hall element 12 Microphone 13 Antenna 21 Radio | wireless part 22 Communication control part 23 Main control unit 24 Speaker drive control unit 25 Transmission control unit 26 Display control unit 27 Operation input unit 28 State detection control unit 31 Side keys A1 to A3 Speaker

Claims (11)

A first casing having a display panel and provided with three speakers for stereo sound output, a second casing having an operation panel, the first casing and the second casing. It consists of a connecting part that can be folded,
In a portable terminal capable of transitioning between a first terminal state in which the first casing and the second casing are expanded and a second terminal state in which the display panel is folded outward,
State detection means for detecting which of the above terminal states the mobile terminal is;
A portable terminal comprising speaker driving means for driving each speaker based on the detection result of the terminal state. A display direction switching means for switching a screen display direction in the display panel based on an operation input by a user;
2. The portable terminal according to claim 1, wherein the speaker driving unit drives the speaker based on a screen display direction. Program execution means for executing a control program for generating an image by switching the direction of screen display on the display panel,
The portable terminal according to claim 1, wherein the speaker driving unit drives the speaker based on a screen display direction switched by the control program. The second casing has a microphone for transmission provided at an end opposite to the connecting portion,
Each of the speakers is disposed at an end of the first housing opposite to the connecting portion and an end of the connecting portion with the display panel sandwiched between the ends. The portable terminal according to claim 1, wherein the portable terminal is also used. When there is an incoming call in the second terminal state, an input key is provided for executing off-hook processing while maintaining the terminal state;
The portable terminal according to claim 4, wherein the speaker disposed at the end portion on the side of the connecting portion is used for a call performed while maintaining the terminal state.   5. The portable terminal according to claim 4, wherein the speaker driving means drives the speaker with a lower output level during a call than when stereo sound is output.   The mobile terminal according to claim 1, wherein the connection unit connects the first housing to the second housing so as to be rotatable around two rotation axes orthogonal to each other.   The portable terminal according to claim 1, wherein the speaker driving unit drives the speaker by switching left and right in the first terminal state and the second terminal state.   9. The portable information terminal according to claim 8, wherein the speaker driving means switches left and right so that the left and right of stereo sound are the same in each terminal state toward the operation panel.   2. The portable information terminal according to claim 1, further comprising display direction control means for switching a screen display direction on the display panel based on the detection result of the terminal state.   The said display direction control means switches direction so that the direction of a screen display toward the said operation panel may become the same in a 1st terminal state and a 2nd terminal state. Mobile information terminals.

Images