JP2005295288A - Mobile communication terminal and receiver operation control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To receive a receiver even if the display housing is slightly rotated with respect to the operation housing when the terminal is normally open, or both housings are slightly opened when the terminal is in the reverse closed state. Provide a mobile communication terminal that does not switch.
SOLUTION: A display housing 2 provided with two receivers 7a and 7b, an operation housing 3, and a connecting portion 4 that is foldably connected, and the display panel surface and the operation panel surface are directed in the same direction. It is possible to transition in sequence between a normally open state that is unfolded, a reverse open state that is unfolded with the display panel surface and the operation panel surface facing in the opposite direction, and a reverse closed state that is folded with the display panel surface outward. The terminal state identification unit 41 for identifying which terminal state the terminal is in, the terminal state storage unit 43 for storing the identification result, and the terminal state in the immediately preceding terminal state when the terminal is in the reverse open state And a receiver drive controller 42 that selectively selects each receiver based on the receiver.
[Selection] Figure 9

Description

  The present invention relates to a mobile communication terminal and a receiver operation control method. More specifically, the present invention relates to a first casing provided with two receivers on a display panel surface, a second casing having an operation panel surface, The present invention relates to an improvement in a mobile communication terminal such as a mobile phone that includes a connecting portion that connects both housings in a foldable manner. In particular, the present invention relates to a portable communication terminal capable of making a call with different receivers in two terminal states.

  In recent years, mobile phones that can be folded with the display panel surface facing outward have been proposed (for example, Patent Document 1). The mobile phone described in Patent Document 1 is provided with a display housing having a receiver (receiving voice output unit) on the display panel surface, and a transmitting microphone (voice input unit) on the operation panel surface. And a connecting portion that foldably connects the two casings. The connecting portion is composed of a biaxial hinge having two orthogonal rotation axes.

  In this mobile phone, the terminal state (normally open state) in which the display housing and the operation housing are expanded with the display panel surface and the operation panel surface facing the same direction, and the display panel surface and the operation panel surface are directed in the opposite directions. The terminal state (reverse open state) in which the display housing and the operation housing are unfolded and the terminal state (reverse close state) folded with the display panel surface facing outward can be sequentially shifted.

  In the normal open state, a call operation, a response operation at the time of an incoming call, a telephone call, and the like can be performed. In the reverse close state, a browsing operation and a photographing operation can be performed when an e-mail is received. In consideration of use in a normally open state, the receiver and the microphone are both provided at the end opposite to the connecting portion.

  In such a mobile phone, if an incoming call is received when the terminal is in the reverse closed state, it is considered very convenient to perform a response operation while maintaining the reverse closed state. In particular, if a call can be made without deploying the display housing and the operation housing, the operation of opening and closing both housings for each call becomes unnecessary, so that the operability can be improved.

  However, since both the receiver and the microphone are provided at the end opposite to the connecting portion, there is a problem that in the reverse closed state, the receiver and the microphone are close to each other and cannot make a call.

  Therefore, it is conceivable to provide two receivers on the display panel surface and use the receivers in the normal open state and the reverse close state. However, when the terminal is in a normally open state, there is a problem that it is difficult to make a call if the receiver is switched only by slightly rotating the display housing with respect to the operation housing. Further, when the terminal is in the reverse closed state, it is difficult to make a call even if the receiver is switched by slightly opening the display housing and the operation housing.

Furthermore, when the terminal is in the reverse closed state, if the receiver is switched just by slightly opening the display housing and the operation housing, the sound generated by the receiver is input to the microphone, so howling There was also a problem that it would occur.
JP 2002-171189 A

  As described above, with a conventional mobile phone, when trying to make a call while maintaining the reverse closed state, the display housing is slightly rotated with respect to the operation housing when the terminal is normally open. For example, when the receiver is switched, or when the terminal is in the reverse closed state, the receiver is switched by slightly opening the display housing and the operation housing.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a mobile communication terminal and a receiver operation control method capable of making a call while maintaining a reverse closed state without deteriorating operability. It is said. In particular, when the terminal is normally open, the display housing is slightly rotated with respect to the operation housing. When the terminal is in the reverse closed state, the display housing and operation housing are slightly opened. However, it aims at providing the portable communication terminal from which a receiver does not switch.

  It is another object of the present invention to provide a mobile communication terminal that does not cause howling even if the display housing and the operation housing are slightly opened when the terminal is in the reverse closed state.

  A mobile communication terminal according to the present invention includes a first housing having two receivers provided on a display panel surface, a second housing having an operation panel surface, and a connecting portion that foldably connects the two housings. The first terminal state and the third terminal state that can be communicated by the receivers different from each other, and the second terminal state that is passed in the transition process between the first terminal state and the third terminal state A mobile communication terminal having a terminal state identification unit for identifying which terminal state the mobile communication terminal is in, a terminal state storage unit for storing a terminal state identification result, and each of the receivers. Receiver drive control means that is driven by the received audio signal, and the receiver drive control means transitions from the first terminal state to the second terminal state, and from the third terminal state. Before entering the second terminal state, configured to select the same receiver before and after the state transition.

  In addition, the mobile communication terminal according to the present invention connects the first housing having two receivers on the display panel surface, the second housing having the operation panel surface, and the two housings so as to be foldable. The first terminal state in which the first casing and the second casing are expanded with the display panel surface and the operation panel surface facing in the same direction, and the display panel surface and the operation panel surface are opposite to each other. Portable communication capable of sequentially transitioning between a second terminal state in which the first casing and the second casing are expanded toward the direction and a third terminal state in which the display panel surface is folded outward A terminal state identifying means for identifying which terminal state the mobile communication terminal is in, a terminal state storage means for storing the identification result of the terminal state, and the mobile communication terminal in the second terminal state In some cases, each of the above receivers based on the previous terminal state Alternatively select, constituted by a receiver drive control means for driving the audio signal received.

  According to such a configuration, the terminal state identification result is stored, and the second terminal state in which each receiver is alternatively selected based on the immediately preceding terminal state is the first terminal state and the third terminal. Since it is routed through a transition process between states, the receiver can be appropriately driven according to the transition path of the terminal state.

  In particular, when transitioning from the first terminal state (normally open state) to the second terminal state (reverse open state), if the same receiver is selected before and after the state transition, the mobile communication terminal When in the normally open state, the receiver can be prevented from being switched only by slightly rotating the first casing (display casing) with respect to the second casing (operation casing). In addition, when a transition is made from the third terminal state (reverse closed state) to the second terminal state, if the same receiver is selected before and after the state transition, the mobile communication terminal is in the reverse closed state. Sometimes, the receiver can be prevented from being switched by slightly opening the display housing and the operation housing. Therefore, it is possible to make a call while maintaining the reverse close state without deteriorating the operability.

  In addition, when transitioning from the third terminal state to the second terminal state, the same receiver is selected before and after the state transition, so when the mobile communication terminal is in the reverse closed state, the display housing and the operation Howling can be suppressed by slightly opening the housing.

  A receiver operation control method according to the present invention includes a first case in which two receivers are provided on a display panel surface, a second case having an operation panel surface, and a connection for connecting both cases in a foldable manner. The first terminal state in which the first casing and the second casing are expanded with the display panel surface and the operation panel surface facing in the same direction, and the display panel surface and the operation panel surface in opposite directions. Portable communication terminal capable of sequentially transitioning between a second terminal state in which the first casing and the second casing are expanded toward the terminal and a third terminal state in which the display panel surface is folded outward A receiver driving control method for driving each receiver based on a received audio signal, a terminal state identifying step for identifying which terminal state the mobile communication terminal is in, and a terminal state Knowledge A terminal state storing step for storing the result, and an audio output for instructing a receiver to be driven by selectively selecting each receiver based on the immediately preceding terminal state when the mobile communication terminal is in the second terminal state And a switching step.

  According to the mobile communication terminal and the receiver operation control method according to the present invention, the second terminal state that selectively selects each receiver based on the immediately preceding terminal state is between the first terminal state and the third terminal state. Since it is routed in the transition process, the receiver can be appropriately driven according to the transition path of the terminal state. In particular, when transitioning from the first terminal state to the second terminal state, the same receiver is selected before and after the state transition, so when the mobile communication terminal is in the first terminal state, It is possible to prevent the receiver from being switched only by slightly rotating the housing with respect to the second housing. In addition, when the transition from the third terminal state to the second terminal state, the same receiver is selected before and after the state transition, so when the mobile communication terminal is in the third terminal state, It is possible to prevent the receiver from being switched only by slightly opening the housing and the second housing. Therefore, it is possible to make a call while maintaining the third terminal state without deteriorating operability.

  In addition, when the transition from the third terminal state to the second terminal state, the same receiver is selected before and after the state transition, so when the mobile communication terminal is in the third terminal state, Howling can be suppressed by slightly opening the housing and the second housing.

Embodiment 1 FIG.
FIGS. 1A and 1B are plan views showing a configuration example of the mobile communication terminal according to Embodiment 1 of the present invention. FIG. 1A shows the display panel 5 surface and the operation panel 6. A normal open state in which the surfaces are expanded in the same direction is shown, and FIG. 1B shows a storage state in which the display panel 5 surface and the operation panel 6 surface are folded inward. A mobile communication terminal 1 according to the present embodiment is a foldable mobile phone having a so-called rotary clamshell mechanism, and includes a display housing (first housing) 2 having a display panel 5 and an operation panel 6. It comprises an operation housing (second housing) 3 and a connecting portion 4 that connects both housings so that they can be folded.

  The display housing 2 is a thin box (casing). On one main surface, the display housing 2 includes a display panel 5 having a main display made of a liquid crystal display element, and two receiving speakers (sound output elements). Receivers 7a and 7b are provided. Each of the receivers 7a and 7b is disposed at both ends in the longitudinal direction of the display housing 2 with the display panel 5 interposed therebetween. That is, each of the receivers 7 a and 7 b is arranged on the connecting portion 4 side and the opposite side of the connecting portion 4 on the display panel 5 surface of the display housing 2.

  Here, the receiver 7a is a receiver on the side opposite to the connecting portion 4 (tip-side receiver), and the receiver 7b is a receiver on the connecting portion 4 side (hinge-side receiver). On the other main surface, a sub-display 19 having a display screen smaller than that of the main display is provided.

  The operation housing 3 is a box having the same shape as that of the display housing 2. On one main surface (front surface), an operation panel 6 including various operation keys and a microphone (voice input element) 8 for transmission are provided. And are provided. As various operation keys, a shooting mode key 12, a telephone directory search mode key 13, a direction key 14, an on-hook key 15, an off-hook key 16, a number key, and the like are provided. The microphone 8 is disposed at an end portion in the longitudinal direction of the operation housing 3 with the operation panel 6 interposed between the connection portion 4 and the operation panel 6. That is, the microphone 8 is disposed on the side opposite to the connecting portion 4.

  On the other main surface (rear surface), a digital camera 20 including an image pickup device, a speaker for outputting a ringtone, and the like are provided. A side key 17 is provided on the right side surface of the operation housing 3 for performing a shutter operation when photographing with the digital camera 20, and a side surface for performing a call operation and a response operation at the time of an incoming call is provided on the left side surface. A key 18 is provided.

  The connecting portion 4 includes a biaxial hinge 9 having two orthogonal rotating shafts 10 and 11, and is displayed by a rotating shaft (first rotating shaft) 11 parallel to the intersection line of the display panel 5 surface and the operation panel 6 surface. The housing 2 and the operation housing 3 are connected so as to be openable and closable, and both housings are rotatably connected by a rotation shaft (second rotation shaft) 10 parallel to the longitudinal direction of the display housing 2. The rotation shaft 11 is disposed along the distal end surface in the longitudinal direction of the operation housing 3, and the rotation shaft 10 is disposed at the center position in the short direction of the display housing 2.

  With this connecting portion 4, the terminal state (stored state) in which both housings are folded with the display panel 5 surface and the operation panel 6 surface facing inward, and the display panel 5 surface and the operation panel 6 surface are directed in the same direction. Terminal state (normally open state) in which the casing is expanded, terminal state (reverse open state) in which both casings are expanded with the display panel 5 surface and the operation panel 6 surface facing in opposite directions, and the display panel 5 surface The terminal state (reverse closed state) folded toward the outside can be sequentially shifted. In other words, in the transition process between the normal open state and the reverse close state, the reverse open state is always passed.

  2 (a) and 2 (b) are plan views showing an example of the terminal state of the mobile communication terminal of FIG. 1, and FIG. 2 (a) shows the display panel 5 surface and the operation panel 6 surface in opposite directions. The reverse open state expanded toward is shown, and FIG. 2B shows the reverse close state in which the display panel 5 is folded outward.

  FIGS. 3A to 3D are state transition diagrams showing an example of the terminal state in the mobile communication terminal of FIG. 1, and FIG. 3A shows the state of the storage state. FIG. 3B shows the normal open state, FIG. 3C shows the reverse open state, and FIG. 3D shows the reverse close state.

  The housed state is a state in which both housings are closed while the display panel surface 5a and the operation panel surface 6a are opposed to each other, and the terminal is in a standby mode. When both housings are opened from this stored state, a normal open state is obtained.

  In the normal open state, an outgoing operation by an off-hook key, a response operation at the time of an incoming call, a call, a photographing operation by the digital camera 20, an email editing operation, a received email browsing operation, a phone book search operation, and the like are performed. . When making a call or receiving a call, the entered destination telephone number, caller number, etc. are displayed on the main display. At the time of shooting, the shot image is displayed as a viewfinder on the main display.

  In such a normally open state, a call is performed using the receiver 7a. When the display housing 2 is rotated 180 degrees around the rotation axis 10 with respect to the operation housing 3 from the normal open state, the reverse open state is established.

  In the reverse open state, the rear surface of the operation housing 3 is directed to the terminal operator side, and self-photographing with the side key 17 is performed (self-portrait mode). When the two casings are closed with the display panel surface 5a facing outward from the reverse open state, the reverse close state is established.

  In the reverse closed state (also referred to as a viewer style state), an outgoing operation by the side key 18, a response operation at the time of an incoming call, a call, a photographing operation, a browsing operation at the time of mail reception, and the like are performed. In this reverse closed state, a call is performed using the receiver 7b. Since the receiver 7b is located farthest from the microphone 8 in the reverse closed state, it is possible to make a call appropriately.

  4 (a) and 4 (b) are diagrams showing an example of a terminal state during a call in the mobile communication terminal of FIG. 1. In FIG. 4 (a), the terminal operator A opens the terminal. FIG. 4B shows a state in which the terminal operator A closes the terminal and makes a call.

  FIG. 5 is a perspective view showing an example of the details of the main part of the mobile communication terminal of FIG. 1, and an open / close detection sensor (magnet 21 and hall element 23) and a rotation / non-rotation detection sensor (for detecting the terminal state). The arrangement of the magnet 22 and the Hall element 24) is shown.

  The open / close detection sensor is a magnetic sensor that uses the Hall effect to detect the open / closed state of the display housing 2 and the operation housing 3, and includes a magnet 21 and a Hall element 23. The magnet 21 is a small rectangular parallelepiped magnet, and is embedded in the distal end portion of the display housing 2. The hall element 23 is formed of a small integrated circuit (IC) and is embedded in an end portion of the operation housing 3 opposite to the connection portion 4. The magnet 21 and the hall element 23 are provided at the center position in the short direction of the casing, respectively, and are arranged to face each other in the housed state and the reverse closed state.

  In particular, the magnet 21 is disposed on the center line of the rotating shaft 10. Thereby, it is possible to detect the open / closed state of both housings regardless of whether the display housing 2 is in a rotating state or a non-rotating state with respect to the operation housing 3.

  The rotation / non-rotation detection sensor is a magnetic sensor for detecting the rotation / non-rotation state of the display housing 2 and the operation housing 3, and includes a magnet 22 and a hall element 24. The magnet 22 is embedded in the end of the display housing 2 on the hinge 9 side, and the hall element 24 is embedded in the hinge 9. The magnet 22 and the hall element 24 are provided so as to be offset with respect to the rotary shaft 10 and are disposed so as to face each other in the normal open state.

  Each Hall element 23 and 24 is turned on and off based on the strength of the magnetic field, and outputs a detection signal. Here, when the strength of the magnetic field exceeds a predetermined threshold value, a detection signal having a low voltage level is generated and the detection signal having a high voltage level is generated when the strength of the magnetic field falls below the threshold value. Shall be generated.

  FIGS. 6A and 6B are state transition diagrams showing an example of the detection operation in the open / close detection sensor of FIG. 5, and FIG. 6A shows a storage in which a detection signal with a low voltage level is output. The state is shown, and FIG. 6B shows a terminal state in which both housings are slightly opened and the voltage level of the detection signal is switched.

  When the rotation angle θ of the display housing 2 with respect to the operation housing 3 exceeds the critical angle θc with respect to the rotation shaft 11, the voltage level of the detection signal is switched from a low state to a high state. That is, when the rotation angle θ is equal to or less than the critical angle θc, the voltage level is switched to a low state, and the terminal is considered to be in the closed state. On the other hand, when the rotation angle θ exceeds the critical angle θc, the voltage level is switched to a high state, and the terminal is considered to be in an open state. The critical angle θc is determined based on a threshold value in the Hall element.

  When the transition is made between the reverse closed state and the reverse open state, the open / closed state is detected in the same manner as the transition between the storage state and the normal open state described above. In this way, by using the open / close detection sensor, it is possible to identify whether both the housings are in a closed state or an open state.

  FIGS. 7A and 7B are state transition diagrams showing an example of the detection operation in the rotation / non-rotation detection sensor of FIG. 5. FIG. 7A shows a detection signal with a low voltage level output. FIG. 7B shows a terminal state in which the display housing 2 is slightly rotated with respect to the operation housing 3 and the voltage level of the detection signal is switched.

  When the rotation angle φ of the display housing 2 with respect to the operation housing 3 exceeds the critical angle φc with respect to the rotation shaft 10, the voltage level of the detection signal is switched from a low state to a high state. That is, when the rotation angle φ is equal to or less than the critical angle φc, the voltage level is switched to a low state, and the terminal is considered to be in a non-rotation state. On the other hand, when the rotation angle φ exceeds the critical angle φc, the voltage level is switched to a high state, and the terminal is considered to be in the rotation state. The critical angle φc is determined based on a threshold value in the Hall element.

  Based on the detection results by the open / close detection sensor and the rotation / non-rotation detection sensor, each terminal state, that is, the storage state, the normal open state, the reverse open state, and the reverse close state is identified. Specifically, it is regarded as a storage state when it is in a closed state and in a non-rotating state, and is regarded as a normally open state when it is in an open state and is in a non-rotating state. Moreover, when it is an open state and it is a rotation state, it is regarded as a reverse open state, and when it is a close state and it is a rotation state, it is regarded as a reverse close state.

  In such a mobile communication terminal 1, drive control of the receivers 7a and 7b according to the transition path of the terminal state is performed.

  FIG. 8 is a block diagram showing an example of a main part configuration in the mobile communication terminal of FIG. 1, and shows a circuit related to the switching operation of the receivers 7a and 7b for each terminal state during a call. The mobile communication terminal 1 includes an antenna 31, a wireless communication unit 32, an operation input unit 33, a main control unit 34, an open / close detection sensor 35, a rotation / non-rotation detection sensor 36, a voice input unit 37, a voice output unit 38, an analog switch. (SW) 39, LCD controller (LCDC) 40, terminal state identification unit 41, receiver drive control unit 42, and terminal state storage unit 43.

  The terminal state identification unit 41 identifies which terminal state the mobile communication terminal 1 is in. This terminal state identification process is performed based on detection results by the open / close detection sensor 35 and the rotation / non-rotation detection sensor 36.

  Specifically, the detection signal is digitally processed by a DSP (Digital Signal Processor), and a terminal state identification result is output. The terminal state identification results are stored in time series by the terminal state storage unit 43.

  The receiver drive control unit 42 selectively controls each of the receivers 7a and 7b and performs drive control based on the received audio signal. When the mobile communication terminal 1 is in the reverse open state, the selection of the receivers 7a and 7b to be driven is performed based on the immediately preceding terminal state. That is, switching of the receivers 7a and 7b is performed based on the terminal state identification history stored in time series.

  For example, when transitioning from the normal open state to the reverse open state, the same receiver is selected before and after the state transition. That is, when the normal open state transitions to the reverse open state, in the reverse open state, the receiver 7a used in the normal open state is driven. Thereby, when the mobile communication terminal 1 is in a normally open state, it is possible to prevent the receiver from being switched only by slightly rotating the display housing 2 with respect to the operation housing 3.

  In addition, when transitioning from the reverse close state to the reverse open state, the same receiver is selected before and after the state transition. That is, when the transition from the reverse close state to the reverse open state occurs, the receiver 7b used in the reverse close state is driven in the reverse open state. Thereby, when the mobile communication terminal 1 is in the reverse closed state, it is possible to prevent the receiver from being switched only by slightly opening the display housing 2 and the operation housing 3.

  When the transition from the reverse closed state to the reverse open state is performed, the same receiver 7b is selected before and after the state transition, so that the display housing 2 and the operation housing 3 when the mobile communication terminal 1 is in the reverse closed state. Howling can be suppressed by slightly opening the.

  Drive control of each receiver 7a and 7b is performed using a general-purpose port of the LCDC 40 that operates by LVDS (Low Voltage Differential Signaling), and the analog SW 39 is switched.

  Each of the receivers 7a and 7b is used for outputting a key operation sound in addition to outputting a reception sound. When a key operation sound is output during non-calling, the history operation as described above is not performed, and only one receiver is used. As a result, the configuration can be simplified and the manufacturing cost can be reduced because it is not necessary to provide an extra receiver suitable for outputting the key operation sound. Since the receiver 7b located close to the connecting portion 4 is easily closed in a closed state, it is desirable to use the receiver 7a for outputting a key operation sound during non-calling.

  FIG. 9 is a diagram showing an example of the history operation in the mobile communication terminal of FIG. 1, and shows the driving state of each receiver 7a and 7b for each terminal state during a call. In the housed state, the detection signals from the open / close detection sensor 35 and the rotation / non-rotation detection sensor 36 are both at the low level, and the front-end receiver is turned on.

  In the normally open state, the detection signal from the open / close detection sensor 35 is at a high level, the detection signal from the rotation / non-rotation detection sensor 36 is at a low level, and the front end side receiver is turned on. In the reverse closed state, the detection signal from the open / close detection sensor 35 is at a low level, the detection signal from the rotation / non-rotation detection sensor 36 is at a high level, and the hinge-side receiver is turned on.

  In the reverse open state, the detection signals from the open / close detection sensor 35 and the rotation / non-rotation detection sensor 36 are both at a high level, and when the transition is from the normal open state, the ON state of the front end side receiver is held. On the other hand, when the transition is from the reverse close state, the on state of the hinge side receiver is maintained.

  Steps S101 to S112 in FIG. 10 are flowcharts illustrating an example of a history operation in the mobile communication terminal in FIG. First, the storage area in the terminal state storage unit 43 is initialized, and the normally open state (state [2]) is stored as the terminal state (step S101).

  Next, the terminal state identification unit 41 detects the terminal state in which the terminal is based on detection signals from the open / close detection sensor 35 and the rotation / non-rotation detection sensor 36 (step S102). In this state detection, when the detection signal from the open / close detection sensor 35 is at a low level and the detection signal from the rotation / non-rotation detection sensor 36 is at a high level, it is determined that the reverse-close state is established, and the hinge-side receiver is turned on. (Steps S103 and S108). At this time, the reverse closed state (state [4]) is stored in the terminal state storage unit 43 (step S109).

  Further, when the detection signal from the open / close detection sensor 35 is at a high level and the detection signal from the rotation / non-rotation detection sensor 36 is at a low level, it is determined that it is normally open, and the front end side receiver is turned on ( Steps S104 and S110). At this time, the normally open state (state [2]) is stored in the terminal state storage unit 43 (step S111).

  Further, when the detection signals from the open / close detection sensor 35 and the rotation / non-rotation detection sensor 36 are both at the Low level, it is determined that the storage state is set, and the distal-end receiver is turned on (steps S105 and S112).

  Further, when the detection signals from the open / close detection sensor 35 and the rotation / non-rotation detection sensor 36 are both at a high level, the reverse open state is determined. At this time, if the content stored in the terminal state storage unit 43 is state [2], it is considered that the transition is from the normal open state, and the front-end receiver is turned on (steps S106 and S112). If the stored content is not in the state [2], it is regarded as a transition from the reverse close state, and the hinge-side receiver is turned on (step S107).

  According to the present embodiment, the terminal state identification result is stored, and the reverse open state in which each receiver 7a and 7b is alternatively selected based on the immediately preceding terminal state is between the normal open state and the reverse close state. Since it is routed in the transition process, the receiver can be appropriately driven according to the transition path of the terminal state. In particular, when the mobile communication terminal 1 is in a normally open state, the receiver can be prevented from being switched by slightly rotating the display housing 2 with respect to the operation housing 3. Further, when the mobile communication terminal 1 is in the reverse closed state, it is possible to prevent the receiver from being switched only by slightly opening the display housing 2 and the operation housing 3. Therefore, it is possible to make a call while maintaining the reverse close state without deteriorating the operability.

Embodiment 2. FIG.
In the first embodiment, an example in which a history operation is performed in switching between the receivers 7a and 7b has been described. In contrast, in the present embodiment, a case will be described in which sensitivity control of the microphone 8 is performed for each terminal state during a call.

  FIG. 11 is a block diagram showing an example of a main part configuration in the mobile communication terminal according to Embodiment 2 of the present invention. The mobile communication terminal 50 according to the present embodiment is different from the mobile communication terminal 1 (Embodiment 1) of FIG. 8 in that a microphone sensitivity control unit 51 is provided.

  The microphone sensitivity control unit 51 controls the output level of the audio signal generated by the audio input unit 37 for each terminal state. The microphone sensitivity is controlled by adjusting the attenuation rate in the attenuator. For example, control is performed so that the output level of the audio signal in the reverse close state is higher than the output level in the normal open state and the reverse open state.

  By making the microphone sensitivity in the reverse closed state higher than the microphone sensitivity in the normal open state, it is possible to make a call comfortably even in the reverse closed state. Further, by making the microphone sensitivity in the reverse open state lower than the microphone sensitivity in the reverse close state, it is possible to reduce the influence of noise caused by the opening / closing operation and the rotation operation of the terminal.

  FIG. 12 is a diagram showing an example of the microphone sensitivity switching operation in the mobile communication terminal of FIG. 11, and shows the microphone sensitivity for each terminal state during a call.

  Note that the microphone 8 is used not only for input of a transmission sound during a call but also for voice input during moving image shooting. Audio input during moving image shooting is performed with a microphone sensitivity higher than the microphone sensitivity during a call.

  In the present embodiment, an example in which the history operation is not performed for the microphone sensitivity has been described. However, the present invention is not limited to this, and the microphone sensitivity is the same as in the case of the receivers 7a and 7b. Alternatively, a history operation may be performed.

It is the top view which showed the example of 1 structure of the portable communication terminal by Embodiment 1 of this invention. It is the top view which showed an example of the terminal state in a terminal. 1 is a state transition diagram showing an example of a terminal state in the mobile communication terminal of FIG. It is the figure which showed an example of the terminal state at the time of the telephone call in the portable communication terminal of FIG. It is the perspective view which showed an example of the principal part detail in the portable communication terminal of FIG. FIG. 6 is a state transition diagram illustrating an example of a detection operation in the open / close detection sensor of FIG. 5. FIG. 6 is a state transition diagram illustrating an example of a detection operation in the rotation / non-rotation detection sensor of FIG. 5. FIG. 2 is a block diagram illustrating an example of a configuration of a main part in the mobile communication terminal of FIG. 1, showing a circuit related to switching operation of the receivers 7 a and 7 b for each terminal state during a call. It is the figure which showed an example of the log | history operation | movement in the portable communication terminal of FIG. 1, and the drive state of each receiver 7a and 7b for every terminal state at the time of a telephone call is shown. 3 is a flowchart showing an example of a history operation in the mobile communication terminal of FIG. It is the block diagram which showed an example of the principal part structure in the portable communication terminal by Embodiment 2 of this invention. It is the figure which showed an example of the microphone sensitivity switching operation | movement in the portable communication terminal of FIG.

Explanation of symbols

1,50 Mobile communication terminal 2 Display housing (first housing)
3 Operation case (second case)
4 Connecting portion 5 Display panel 6 Operation panel 7a, 7b Receiver 8 Microphone 9 Hinge 10, 11 Rotating shaft 12 Shooting mode key 13 Phonebook search mode key 14 Direction key 15 On-hook key 16 Off-hook key 17, 18 Side key 19 Sub display 20 Digital cameras 21, 22 Magnets 23, 24 Hall element 31 Antenna 32 Wireless communication unit 33 Operation input unit 34 Main control unit 35 Open / close detection sensor 36 Rotation / non-rotation detection sensor 37 Audio input unit 38 Audio output unit 39 Analog switch (SW)
40 LCD controller (LCDC)
41 Terminal state identification unit 42 Receiver drive control unit 43 Terminal state storage unit 51 Microphone sensitivity control unit

Claims (9)

A first housing provided with two receivers on the display panel surface, a second housing having an operation panel surface, and a connecting portion that foldably connects the two housings;
A mobile communication terminal having a first terminal state and a third terminal state in which communication can be performed by different receivers, and a second terminal state to be passed in a transition process between the first terminal state and the third terminal state In
Terminal state identification means for identifying which of the above terminal states the mobile communication terminal is in,
Terminal state storage means for storing a terminal state identification result;
A receiver driving control means for selectively selecting each of the receivers and driving the received audio signal;
The receiver drive control means is the same receiver before and after the state transition when transitioning from the first terminal state to the second terminal state and when transitioning from the third terminal state to the second terminal state. A mobile communication terminal characterized by selecting. A first housing provided with two receivers on the display panel surface, a second housing having an operation panel surface, and a connecting portion that foldably connects the two housings;
A first terminal state in which the first casing and the second casing are expanded with the display panel surface and the operation panel surface facing in the same direction, and the first terminal state with the display panel surface and the operation panel surface facing in the opposite direction. In the portable communication terminal capable of sequentially transitioning between the second terminal state in which the casing and the second casing are expanded and the third terminal state in which the display panel surface is folded outward,
A terminal state identifying means for identifying which of the above terminal states the mobile communication terminal is in;
Terminal state storage means for storing a terminal state identification result;
When the mobile communication terminal is in the second terminal state, the receiver includes a receiver drive control unit that selectively selects each of the receivers based on the immediately preceding terminal state and that is driven by the received audio signal. A mobile communication terminal.   3. The mobile communication terminal according to claim 2, wherein the receiver drive control unit selects the same receiver before and after the state transition when transitioning from the first terminal state to the second terminal state. 4.   3. The mobile communication terminal according to claim 2, wherein the receiver drive control unit selects the same receiver before and after the state transition when transitioning from the third terminal state to the second terminal state. 4. Each of the receivers is provided on the connecting part side and on the opposite side of the connecting part,
If the mobile communication terminal is in the first terminal state, the receiver drive control means selects the receiver on the side opposite to the connecting portion, and if the mobile communication terminal is in the third terminal state, the receiver drive control means selects the receiver on the connecting portion side. The mobile communication terminal according to claim 2, wherein the mobile communication terminal is selected. Each of the receivers is provided on the connecting part side and on the opposite side of the connecting part,
The portable communication terminal according to claim 4, wherein the second casing has a microphone for transmitting on the side opposite to the connecting portion. The second casing is provided with a microphone for transmitting on the operation panel surface,
Microphone sensitivity control means for controlling the output level of the audio signal generated by the microphone for each terminal state,
3. The mobile communication according to claim 2, wherein the microphone sensitivity control means makes the output level of the audio signal in the third terminal state higher than the output level in the first terminal state and the second terminal state. Terminal. The connecting portion includes a two-axis hinge having two orthogonal rotating shafts, and connects both housings so as to be openable and closable by a first rotating shaft parallel to the intersection line of the display panel surface and the operation panel surface. Both housings are rotatably connected by a second rotating shaft parallel to the longitudinal direction of the one housing;
The terminal state identification means includes an open / close detection sensor for detecting open / close states of the first housing and the second housing, and a rotation for detecting rotation / non-rotation states of the first housing and the second housing. The mobile communication terminal according to claim 2, wherein the terminal state is identified based on a detection result by the non-rotation detection sensor. A first casing provided with two receivers on the display panel surface; a second casing having an operation panel surface; and a connecting part that foldably connects the two casings; The first terminal state in which the first housing and the second housing are expanded with the operation panel surface facing in the same direction, the first housing with the display panel surface and the operation panel surface facing in the opposite direction, and A receiver operation control method in a mobile communication terminal capable of sequentially transitioning between a second terminal state in which a second casing is expanded and a third terminal state in which a display panel surface is folded outward,
A receiver driving step for driving each of the receivers based on the received audio signal;
A terminal state identifying step for identifying which terminal state the mobile communication terminal is in;
A terminal state storage step for storing a terminal state identification result;
When the mobile communication terminal is in the second terminal state, an audio output switching step for selectively selecting each receiver based on the immediately preceding terminal state and instructing the receiver to be driven is provided. Receiver operation control method.

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