JP2007201653A - Mobile terminal and control method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mobile terminal whose opening/closing state is detected by a magnetic force generating means and a magnetic force detection means that surely prevent occurrence of howling and echo possibly caused at speech connection and speech interruption due to opening/closing operations. <P>SOLUTION: In the mobile terminal 1 provided with a hinge part 8, an upper case 2, and a lower case 3, and a speech connection/interruption function responding to a folding operation, a Hall element 41 detects a magnetic force produced by a magnet 31 to detect a change in a folded state. A change detection angle of the mobile terminal 1 is revised depending on a setting state of the mobile terminal 1 such as a transmission mode, a receiver tone volume, and a speech mode. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a mobile terminal device and a control method thereof.

  In recent years, the shape of a mobile terminal device having a call function typified by a mobile phone has been increasing in various shapes such as a rotary type and a folding type other than the conventional straight type.

  For example, in a foldable portable terminal device in which two casings are rotatably connected by a hinge portion, a function of performing control related to a call in response to a folding opening / closing operation is known for the purpose of improving usability. For example, a call connection control function can be performed by opening a foldable terminal device without pressing an on-hook key at the start of a call, or a mobile terminal device can be disconnected without pressing an off-hook key at the end of the call. Function. In order to realize such a function, a sensor for detecting the opening / closing angle of the hinge portion is necessary. As this sensor structure, a technique using a magnet and magnetoelectric conversion means for detecting magnetism generated by the magnet is disclosed in Patent Document 1 below.

  Also, in the conventional foldable mobile terminal device, depending on the structural conditions, when the mobile terminal device is opened and the call is connected, or when the mobile terminal device is folded and the call is disconnected, the receiver and transmitter are very close to each other It becomes a state. As a result, there may be a case in which howling and echo are generated by causing oscillation in the voice path loop inside the mobile terminal device, causing discomfort to the calling party. When this measure is taken in the structural design, it is necessary to restrict the structural conditions in which no howling or echo occurs, the position of the receiving / transmitting unit, and there are cases where the design is restricted. Patent Document 2 below discloses a technique for preventing howling by a muting circuit that detects a folding angle of a mobile phone and reduces a receiver volume or a microphone volume.

JP-A-11-27352 (FIGS. 1 and 6) Japanese Utility Model Publication No. 3-105047 (FIG. 10, page 19)

  In the technique of Patent Document 2 described above, the angle detection range of the hinge portion is fixed. In recent portable terminal devices, there are various modes such as a silent mode in which the microphone sensitivity is increased in addition to the normal mode as a transmission mode, and a hands-free mode in which the microphone sensitivity and speaker volume are increased as a call mode. The user switches between these modes with a simple operation as necessary. At this time, the receiver volume, microphone volume, and speaker volume change according to the set mode. Even in the normal mode, the user can change the receiver volume with a simple operation. Such changes in receiver volume, microphone volume, and speaker volume are closely related to the above-described howling and echo generation. However, the technique disclosed in Patent Document 2 has a fixed angle detection threshold, and the transmission mode and call mode. This does not correspond to the change of the receiver or the change of the receiver volume, so that howling may still occur. Note that the rotary portable terminal device has the same problem as described above only by changing the folding hinge portion to the horizontal rotation axis.

  The objective of this invention is providing the portable terminal device which solved such a conventional subject, and its control method.

  In the portable terminal device of the present invention, the first and second housings are connected by a hinge portion so that the first housing having at least a receiver and the second housing having at least a microphone can be rotated. A portable terminal device that takes a terminal closed state in which housings overlap each other and a terminal open state in which the first and second housings are separated from each other, and is provided on one of the first and second housings A boundary between the terminal open state and the terminal closed state is detected by the detected magnetic force of the magnetic force generating means, the magnetic force detecting means provided on the other of the first and second housings, and the magnetic force detected by the magnetic force detecting means. Control means for controlling to disconnect the call when the terminal is changed to the closed state during the call in the terminal open state, and to respond to the incoming call when the terminal is closed and the terminal is changed to the open state during the incoming call. And the control means includes the portable terminal device. Depending on the setting condition, and changing the boundary change with the terminal open state and the terminal closed state.

  In the portable terminal device of the present invention, the first casing and the first casing including at least a receiver and the second casing including at least a microphone are rotatably connected by a hinge portion. A portable terminal device having a terminal closed state in which two housings overlap each other and a terminal open state in which the first and second housings are separated from each other, and one of the first and second housings When the detected magnetic force of the magnetic force generating means provided, the magnetic force detecting means provided on the other of the first and second casings, and the detected magnetic force of the magnetic force detecting means is a predetermined value or more, the terminal is closed. When the value is less than the value, the terminal is considered to be in the open state, and when the terminal is folded in the terminal closed state during the call, the state change is detected and the call is disconnected. Detecting this state change when opened in the terminal open state And control means for controlling so as to respond to the incoming call, the control means changing the predetermined value by the setting state of the portable terminal device.

  In the mobile terminal device of the present invention, the control means may change the predetermined value according to a transmission level setting of the microphone.

  In the mobile terminal device of the present invention, the control means may change the predetermined value in response to the transmission mode of the mobile terminal device being switched from the normal mode to the manner mode.

  In the mobile terminal device of the present invention, the control means may change the predetermined value in accordance with a reception level setting of the receiver.

  In the mobile terminal device of the present invention, the first housing further includes a speaker for hands-free calling, and the control means switches the call mode of the mobile terminal device from the normal mode to the hands-free mode. The predetermined value may be changed accordingly.

  In the mobile terminal device of the present invention, in the hands-free mode, the microphone transmission level may be higher than normal.

  In the mobile terminal device of the present invention, a permanent magnet may be used as the magnetic force generating means.

  In the portable terminal device of the present invention, a Hall element may be used as the magnetic force detection means.

  In the mobile terminal device of the present invention, the first and second housings may be provided with a folding structure that is folded so as to face each other by the hinge portion.

  In the mobile terminal device of the present invention, the first and second housings may be provided with a rotary structure that is rotated and folded while being kept parallel to each other by the hinge portion.

  According to the control method of the mobile terminal device of the present invention, the first and the first housings including at least a receiver and the second housing including at least a microphone are rotatably connected by a hinge portion. A control method for a portable terminal device that takes a terminal closed state in which a second casing is overlapped with each other and a terminal open state in which the first and second casings are separated from each other, wherein the first and second casings The magnetic force of the magnetic force generating means provided on one side of the body is detected by the magnetic force detecting means provided on the other of the first and second casings, and the terminal open state and the terminal closed state are detected by the detected magnetic force of the magnetic force detecting means. And the call is disconnected when the terminal changes to the closed state during a call in the terminal open state, and responds to an incoming call when the terminal changes to the open state during an incoming call in the terminal closed state And the terminal open state and the terminal closed Boundaries of change of on purpose is characterized in that it is changed in accordance with the setting state of the portable terminal device.

According to another aspect of the present invention, there is provided a method for controlling a portable terminal device, comprising: a first housing provided with at least a receiver; and a second housing provided with at least a microphone so as to be rotatable by a hinge portion. In the control method of a portable terminal device that takes a terminal closed state in which the first and second housings overlap each other and a terminal open state in which the first and second housings are separated from each other, the first and second housings The magnetic force of the magnetic force generating means provided on one side of the body is detected by the magnetic force detecting means provided on the other of the first and second housings, and the detected magnetic force is changed according to the setting state of the portable terminal device When the terminal is equal to or greater than the predetermined value, the terminal is considered to be closed, and when the terminal is less than the predetermined value, the terminal is considered to be open.
This state change is detected when the terminal is folded while the terminal is in the open state and the call is disconnected, and the state change is detected when the terminal is closed and the terminal is opened during the incoming call. It is characterized by controlling to respond to an incoming call by detecting.

  Moreover, the control method of the portable terminal device of the present invention may change the predetermined value according to the transmission level setting of the microphone.

  In the mobile terminal device control method of the present invention, the predetermined value may be changed in accordance with the transmission mode of the mobile terminal device being switched from the normal mode to the manner mode.

  Moreover, the control method of the portable terminal device of the present invention may change the predetermined value according to the reception level setting of the receiver.

  In the portable terminal device control method according to the present invention, the first casing further includes a speaker for hands-free calling, and the call mode of the portable terminal device is switched from the normal mode to the hands-free mode. The predetermined value may be changed accordingly.

  In the portable terminal device control method of the present invention, in the hands-free mode, the microphone transmission level may be higher than normal.

  According to the present invention, in a mobile terminal that detects the open / closed state of a terminal by means of magnetic force generation means and magnetic force detection means, howling and echo that may occur at the time of call connection or call disconnection based on the open / close operation are more reliably prevented. Make it possible. The reason is that the change detection angle of the terminal open / close state is changed according to the setting state of the portable terminal device, for example, the transmission mode, the receiver volume, and the call mode.

  Next, the best mode for carrying out the present invention will be described in detail with reference to the drawings. FIG. 1 is a mounting diagram showing an internal arrangement structure in a state where a hinge portion is opened in a first embodiment of the present invention.

  Referring to FIG. 1, in a foldable portable terminal device 1 according to the first embodiment of the present invention, an upper housing 2 and a lower housing 3 are connected by a hinge portion 8, and the upper portion with the hinge portion 8 serving as a fulcrum. The housing 2 and the lower housing 3 are configured to be foldable so as to face each other. In FIG. 1, the hinge portion 8 is in a fully open state (160 degrees), and both housings are separated from each other.

  The upper housing 2 includes an antenna 9 for performing wireless communication with a radio base station, a receiver 10 that emits voice from the other party during a call, a permanent magnet 31 as a magnetic force generating means, and a ring tone when a call is made. And a speaker 11 used for hands-free calling, a display unit 4 for displaying a screen, and an upper substrate 5 for mounting electronic components and supplying signals. ing. The lower housing 3 is connected to the microphone 21 for transmitting own voice to the other party, the Hall element 41 as magnetic force detection means for detecting the magnetic force and outputting a voltage corresponding to the magnetic flux density, and the portable terminal device 1. A battery 7 for supplying power and a lower substrate 6 for mounting electronic components and supplying signals are provided. Although not shown, various electronic components (a microprocessor, a memory, an integrated circuit element, etc.) for controlling the operation of the mobile terminal device 1 are mounted on the substrate 5 or 6.

  FIG. 2 shows a state where the folding angle of the hinge portion 8 of the mobile terminal device 1 is 20 degrees. FIG. 3 similarly shows a state where the folding angle is 5 degrees. FIG. 4 shows a closed state (0 degree) in which both housings are completely folded and overlapped. Usually, in such a foldable portable terminal device 1, the receiver 10 is arranged at the upper center of the upper housing 2 and the microphone 21 is disposed at the lower middle of the lower housing 3 in consideration of the positions of the human ear and mouth. As a result, when the portable terminal device 1 is folded, the positional relationship is such that the two face each other. In addition, the magnet 31 mounted in the upper housing 2 and the hall element 41 mounted in the lower housing 3 are also arranged at positions where the portable terminal device 1 faces each other when the mobile terminal device 1 is folded, and as the folding angle decreases. The magnet 31 and the Hall element 41 approach each other. On the contrary, the magnet 31 and the hall element 41 are separated from each other as the folding angle increases.

  The hall element 41 and the magnet 31 are used for the purpose of detecting the open / closed state of the foldable portable terminal device 1 and turning on / off the information display on the display unit 4. It is also used as a cutting means.

  FIG. 5 shows a functional block diagram in the first embodiment of the present invention. Here, only the blocks necessary for realizing the functions related to the present invention are shown, and the blocks related to the call function and the like provided in the mobile terminal device 1 are omitted.

  Referring to FIG. 5, the functional block of the first embodiment of the present invention includes a magnet 31, a hall element 41, a power supply unit 51, an amplification unit 52, an output voltage detection unit 53, a control unit 54, and a transmission unit. And a talk mode information section 55. As described above, the magnet 31 is mounted on the upper housing 2, and the Hall element 41 is mounted on the lower housing 3. Other functional blocks may be mounted on the upper housing 2 or the lower housing 3 as necessary.

  As shown in FIG. 6, the Hall element 41 has a function of detecting a magnetic force and outputting a voltage corresponding to the detected magnetic flux density. As described above, the magnet 31 and the Hall element 41 approach each other as the folding angle of the mobile terminal device 1 decreases. In general, the Hall element 41 has a feature of outputting a higher voltage as the magnetic flux density is higher. Therefore, as shown in FIG. 7, the smaller the folding angle, the stronger the Hall element 41 detects the magnetic flux density of the magnet 31 and outputs a higher voltage. Therefore, by detecting the output voltage of the Hall element 41, the boundary between the open state and the closed state of the mobile terminal device 1 can be detected.

  The transmission mode information unit 55 stores information on whether the transmission mode setting of the mobile terminal device 1 is the normal mode or the manner mode. In this portable terminal device 1, as a transmission mode setting, a normal mode setting that is an optimum transmission level at the time of a call in a normal environment and a small amount so as not to disturb the surroundings in an environment where a loud voice cannot be spoken. It has a setting generally called the manner mode in which the microphone transmission level (microphone sensitivity) is increased compared to the normal mode so that sufficient voice can be transmitted to the other party even if speaking with a voice.

  In FIG. 5, when the Hall element 41 detects the magnetic flux density of the magnet 31, a voltage corresponding to the magnetic flux density is output. The amplifying unit 52 further amplifies the output voltage of the Hall element 41 (hereinafter referred to as Hall element output voltage). The output voltage detection unit 53 detects the output voltage of the amplification unit 52 and sends it to the control unit 54. The control unit 54 stores in advance control voltage values corresponding to each transmission mode, and based on the setting information of the transmission mode information unit 55 and the detection information of the output voltage detection unit 53, call connection / call disconnection control is performed. (Off-hook / on-hook control) is performed. The Hall element output voltage value for connection or disconnection of a call is a howling or an echo due to a factor that the distance between the receiver 10 and the microphone 21 approaches when the folding angle is reduced in each setting state of the normal mode and the manner mode. Set to the voltage value at the folding angle at which no occurs.

  In the functional block of FIG. 5, the control unit 54 is normally provided in the mobile terminal device 1 and can be implemented by a microprocessor or CPU (Central Processing Unit) that controls the operation of the entire device. Further, the transmission mode information unit 55 is usually provided in the mobile terminal device 1 and can be implemented by a memory that stores a telephone number and the like. The transmission mode is switched by the user by inputting a key (not shown) of the mobile terminal device 1. The microprocessor (control unit 54) of the mobile terminal device 1 recognizes this, and the transmission mode information unit 55. This is possible by holding the current mode information. Since these operations and techniques are well known, detailed description thereof will be omitted. Although the power supply unit 51 only shows power supply to the Hall element 41, it also supplies power to other necessary functional blocks.

  For example, as shown in FIG. 8, when the transmission mode of the mobile terminal device 1 is the normal mode, the call connection / call disconnection is performed with the Hall element output voltage A (mV) at which the folding angle of the mobile terminal device 1 is 5 degrees. Set to control. That is, the boundary of the change between the terminal closed state and the terminal open state is 5 degrees. On the other hand, when the transmission mode setting is the manner mode, the call connection / disconnection control is performed with the hall element output voltage B (mV) at which the folding angle of the mobile terminal device 1 is 20 degrees. That is, the reference value for detecting the terminal open / closed state change is changed from A (mV) (normal mode) to B (mV) (manner mode). As described above, in the manner mode, the transmission level is increased as compared with the normal mode, so that howling and echo are more likely to occur than in the normal mode. Accordingly, in the manner mode, control is performed so that the call is connected / disconnected in a state where the folding angle (the boundary between the terminal closed state and the terminal open state) is larger than in the normal mode.

  FIG. 9 shows an operation flowchart. When an incoming call is received from the standby state (step S1) (step S2), the user responds to this incoming call by opening the hinge unit 8 of the portable terminal device 1 (step S3) (call connection). At this time, the upper housing 2 and the lower housing 3 are opened with the hinge portion 8 as a fulcrum, that is, in the direction in which the folding angle is increased. As the folding angle increases, the magnet 31 mounted on the upper housing 2 and the Hall element 41 mounted on the lower housing 3 move away (Step S4), so the magnetic flux density detected by the Hall element 41 decreases. The Hall element output voltage (step S5) gradually decreases.

  The control unit 54 recognizes whether the transmission mode is the normal mode or the manner mode based on the setting information of the transmission mode information unit 55 (step S6). In the normal mode, the output voltage A (mV ) (= Folding angle 5 degrees) is detected (step S7), call connection control (off hook) for responding to an incoming call and connecting a wireless line is performed (step S8). In step S6, when the transmission mode is the manner mode, call connection control is performed at the time when the output voltage B (mV) (= folding angle 20 degrees) is detected (step S9) (step S8).

  Next, consider a case where the conversation is terminated during a call with the other party (step S10) and the user disconnects the line by the operation of closing the mobile terminal device 1. When the upper housing 2 and the lower housing 3 are closed using the hinge portion 8 as a fulcrum (step S11), the folding angle is reduced. As the folding angle becomes smaller, the magnet 31 mounted on the upper casing 2 and the Hall element 41 mounted on the lower casing 3 approach each other (Step S12), and the magnetic flux density detected by the Hall element 41 increases. The element output voltage (step S13) gradually increases.

  The control unit 54 recognizes whether the transmission mode is the normal mode or the manner mode based on the setting information of the transmission mode information unit 55 (step S14). In the normal mode, the output voltage A ( mV) (= folding angle 5 degrees) is detected (step S15), call disconnection control (on-hook) is performed to disconnect the wireless line (step S16). In step S14, when the transmission mode is the manner mode, the call disconnection control is performed when the output voltage B (mV) (= folding angle 20 degrees) is detected (step S17) (step S16).

  In this manner, when the transmission level is higher than usual and settings such as howling and echo are likely to occur as in the manner mode, the folding angle is larger, that is, the distance between the receiver 10 and the microphone 21 is further away. By performing call connection / call disconnection control at the position, howling and echo can be prevented.

  In the present embodiment, the folding portable terminal device using the hinge portion 8 has been described as an example. However, as shown in FIG. 10, the upper housing 2 and the lower housing 3 are in a parallel state by changing the direction of the hinge. The present invention can be similarly applied to a rotary portable terminal device that rotates in the horizontal direction while maintaining the same. That is, when the upper housing 2 and the lower housing 3 are rotated and both are closed (overlapping), the magnet 31 and the Hall element 41 (magnetic force sensor) approach each other, while the both are rotated. By mounting these at positions where the magnet 31 and the hall element 41 are separated from each other when opened, it is possible to obtain the same effect as the above-described folding type. In this case, the rotation angle formed by the upper housing 2 and the lower housing 3 in the terminal open state is 180 degrees (the leftmost state in FIG. 10), and 0 degrees (one in FIG. 10) in the terminal closed state. Right state). The same applies to the second and third embodiments described below.

  From the viewpoint of detecting the change in the open state / closed state when the folding angle and the rotation angle of the hinge 8 are larger than usual, the magnetic flux density of the magnet 31 is increased and the sensitivity of the hall element 41 (magnetic force sensor) is increased. It is also possible to prevent howling and echoes by performing in accordance with switching to the manner mode. The magnetic flux density of the magnet 31 can be increased by using an electromagnet configuration. The same applies to the second and third embodiments described below.

In any case, if the boundary angle of the opening / closing change of the angle of the hinge portion 8 is set to a very large value, when the mobile terminal device 1 is opened, a rise operation delay of the display portion 4 or the like occurs. Operation cannot catch up and usability decreases. Further, since it is erroneously detected that the mobile terminal device is closed due to a slight impact or the like during a call, it is necessary to determine the change detection boundary angle in consideration of those risks. When it is desired to make the difference in change detection boundary angle as large as possible between the manner mode and the normal mode, it is preferable to set the folding detection angle in the normal mode to a smaller angle.
(Second Embodiment)
Next, a second embodiment of the present invention will be described. In the first embodiment, a mode has been described in which howling and echo are prevented by changing the folding angle for controlling the call connection / call disconnection according to the difference between the normal mode and the manner mode, which are the transmission mode settings. However, in the second embodiment, an example will be described in which the folding angle for controlling the call connection / call disconnection is changed according to the reception volume (volume) setting of the receiver 10. Since the internal arrangement configuration of the portable terminal device 1 may be the same as that in FIG.

  Usually, the reception volume can be set at several levels, and the terminal user can set it at an arbitrary level by key input or the like. For example, if the volume can be set in six stages of volume 1 to volume 6, the other party's voice from the receiver 10 increases as the volume level increases. As described in the first embodiment, since the folding angle of the mobile terminal device 1 is reduced, the receiver 10 mounted on the upper housing 2 and the microphone 21 mounted on the lower housing 3 approach each other. When the volume level is set to be large, the amount of sound circulated to the microphone 21 becomes large, and howling and echo are likely to occur.

  FIG. 11 shows a functional block diagram of the second embodiment. Compared to FIG. 5 of the first embodiment, a reception volume information unit 56 (FIG. 11) is used instead of the transmission mode information unit 55 (FIG. 5). The control unit 54a (FIG. 11) is slightly different in operation from the control unit 54 (FIG. 5) as will be described in detail below. Others are the same as in FIG. 5 and are therefore given the same reference numerals.

  The reception volume information unit 56 stores information indicating whether the current reception volume setting is higher than a predetermined level (for example, volume 6 or higher) or lower than a predetermined level (for example, volume 5 or lower).

  In FIG. 11, when the Hall element 41 detects the magnetic flux density of the magnet 31, a voltage corresponding to the magnetic flux density is output. The amplifying unit 52 further amplifies the output voltage of the Hall element 41 (hereinafter referred to as Hall element output voltage). The output voltage detection unit 53 detects the output voltage of the amplification unit 52 and sends it to the control unit 54a. The control unit 54a stores a control voltage value corresponding to the set reception volume in advance, and performs call connection / call disconnection control based on the setting information of the reception volume information unit 56 and the detection information of the output voltage detection unit 53. Do. The Hall element output voltage value for connection or disconnection of a call depends on the factor that the distance between the receiver 10 and the microphone 21 approaches when the folding angle becomes small in each of the setting states that are equal to or higher than the predetermined reception volume. Set the voltage value at the folding angle where no howling or echo occurs.

  For example, as shown in FIG. 12, when the reception volume setting value of the mobile terminal device 1 is 5 or less (less than a predetermined level), the Hall element output voltage A (mV) at which the folding angle of the mobile terminal device 1 is 5 degrees. ) To perform call connection / call disconnection control. On the other hand, when the reception volume setting value is volume 6 (predetermined level or higher), the call connection / call disconnection control is performed with the hall element output voltage B (mV) at which the folding angle of the mobile terminal device 1 is 20 degrees. . As described above, since the reception level is the highest at the reception volume 6, the volume setting is more likely to generate howling and echo. Therefore, when the reception volume is 6, the control is performed so as to connect / disconnect the call with a larger folding angle than when the reception volume is 5 or less.

  FIG. 13 shows an operation flowchart. When an incoming call is received from the standby state (step S21) (step S22), the user responds to this incoming call by opening the hinge unit 8 of the mobile terminal device 1 (step S23) (call connection). At this time, the upper housing 2 and the lower housing 3 are opened with the hinge portion 8 as a fulcrum, that is, in the direction in which the folding angle is increased. As the folding angle increases, the magnet 31 mounted on the upper housing 2 and the Hall element 41 mounted on the lower housing 3 move away (Step S24), so that the magnetic flux density detected by the Hall element 41 decreases. The Hall element output voltage (step S25) gradually decreases.

  Based on the setting information in the reception volume information unit 56, the control unit 54a recognizes whether the reception volume is volume 6 (predetermined volume or more) or volume 5 or less (less than the predetermined volume) (step S26). When the volume is equal to or lower than 5, when the output voltage A (mV) (= folding angle 5 degrees) is detected (step S27), the call connection control (off-hook) is performed in response to the incoming call (step S28). When the reception volume is volume 6, call connection control is performed (step S28) when the output voltage B (mV) (= folding angle 20 degrees) is detected (step S29).

  Next, consider a case where the conversation is terminated during a call with the other party (step S30), and the user disconnects the line by closing the portable terminal device 1. When the upper housing 2 and the lower housing 3 are closed using the hinge portion 8 as a fulcrum (step S31), the folding angle is reduced. As the folding angle decreases, the magnet 31 mounted on the upper housing 2 and the Hall element 41 mounted on the lower housing 3 approach each other (Step S32), and the magnetic flux density detected by the Hall element 41 increases, The element output voltage (step S33) gradually increases.

  The control unit 54a recognizes whether the reception volume is the volume 5 or lower or the volume 6 based on the setting information of the reception volume information unit 56 (step S34). If the reception volume is the volume 5 or less, the output voltage Call disconnection control (on-hook) for disconnecting the wireless line is performed (step S36) when A (mV) (= folding angle 5 degrees) is detected (step S35). In step S34, if the volume is 6, the call disconnection control is performed (step S36) when the output voltage B (mV) (= folding angle 20 degrees) is detected (step S37).

  In the reception volume 6, since the voice of the other party from the receiver 10 is the highest, howling and echo are more likely to occur. For this reason, howling and echo can be prevented by performing the call connection / call disconnection control in a state where the folding angle is larger, that is, at a position where the distance between the receiver 10 and the microphone 21 is further away.

In this embodiment, the reception volume for controlling the detection angle is set to volume 6 and volume 5 or lower, but howling and echo are generated depending on the mounting position of the receiver and microphone, the structure condition at the time of folding, and the electric circuit condition. It may be assumed that the values are different. Therefore, the reception volume setting value to be controlled may be changed according to the conditions. Further, as shown in FIG. 14, the folding angle to be controlled may be set for each volume level according to each of the six volume settings.
(Third embodiment)
Next, a third embodiment of the present invention will be described. In the present embodiment, an embodiment will be described in which the folding angle for controlling the call connection / call disconnection is varied depending on the call mode such as normal call and hands-free call. Since the internal arrangement configuration of the portable terminal device 1 may be the same as that in FIG.

  In recent portable terminal devices, portable terminal devices having a videophone function are known. In the case of a videophone call, the user talks while sending an image of his face to the other party. Therefore, as in a normal call, the receiver 10 is not listened to and the conversation is performed, and the loudspeaker 11 and the microphone 21 set to high sensitivity are used at a position about 30 cm away from the mobile terminal device. Make a call in a hands-free style. There is also a portable terminal device having a hands-free function even without a videophone function. In such a hands-free call, since the call with the other party is performed at a position farther from the mobile terminal device than in a normal call, it is necessary to amplify the sound from the speaker 11 having a higher sound pressure than the receiver 10. .

  Further, since it is necessary to collect sound from a distant position with respect to the microphone 21, it is necessary to increase the sensitivity of the microphone 21 (increase in the microphone transmission level). Therefore, when the folding angle of the mobile terminal device 1 becomes small as shown in FIGS. 2 to 4 and the speaker 11 and the microphone 21 approach each other, there is a higher possibility of howling and echoes being generated than during a normal call.

  FIG. 15 shows a functional block diagram of the third embodiment. Compared to FIG. 5 of the first embodiment, a call mode information unit 57 (FIG. 15) is used instead of the transmission mode information unit 55 (FIG. 5). The control unit 54b (FIG. 15) is slightly different in operation from the control unit 54 (FIG. 5) as described in detail below. Others are the same as in FIG. 5 and are therefore given the same reference numerals.

  The call mode information unit 57 stores information indicating whether the current call mode setting is the normal call mode or the hands-free call mode. In the hands-free call mode, the sensitivity of the microphone 21 is increased and the loudspeaker 11 is louder than the normal call mode.

  In FIG. 15, when the Hall element 41 detects the magnetic flux density of the magnet 31, a voltage corresponding to the magnetic flux density is output. The amplifying unit 52 further amplifies the output voltage of the Hall element 41 (hereinafter referred to as Hall element output voltage). The output voltage detection unit 53 detects the output voltage of the amplification unit 52 and sends it to the control unit 54b. The control unit 54b stores a control voltage value corresponding to a preset call mode and controls call connection / call disconnection based on the setting information of the call mode information unit 57 and the detection information of the output voltage detection unit 53. I do. The Hall element output voltage value for connecting or disconnecting a call is the distance between the receiver 10 or the speaker 11 and the microphone 21 when the folding angle is reduced in each setting state during a hands-free call and a normal call. Is set to a voltage value at a folding angle at which no feedback or echo occurs due to the approaching factor.

  For example, as shown in FIG. 16, when the call mode setting of the mobile terminal device 1 is the normal call mode, the call connection / call is performed with the hall element output voltage A (mV) at which the folding angle of the mobile terminal device 1 is 5 degrees. Set to perform cutting control. On the other hand, in the hands-free call mode, it is set to perform call connection / call disconnection control with the hall element output voltage B (mV) at which the folding angle of the mobile terminal device 1 is 20 degrees. As described above, during a hands-free call, since the conversation is performed at a position away from the mobile terminal device 1, the call reception mode and the transmission level are higher than those in the normal call mode, and howling and echo are more likely to occur. . Therefore, during a hands-free call, control is performed so that the call is connected / disconnected in a state where the folding angle is larger than that during a normal call.

  FIG. 17 shows an operation flowchart. When there is an incoming call from the standby state (step S41) (step S42), the user responds to this incoming call by opening the hinge unit 8 of the portable terminal device 1 (step S43). At this time, the upper housing 2 and the lower housing 3 are opened with the hinge portion 8 as a fulcrum, that is, in the direction in which the folding angle is increased. As the folding angle increases, the magnet 31 mounted on the upper housing 2 and the Hall element 41 mounted on the lower housing 3 move away (Step S44), so the magnetic flux density detected by the Hall element 41 decreases. The Hall element output voltage (step S45) gradually decreases.

  Based on the setting information in the call mode information unit 57, the control unit 54b recognizes whether the call mode is a normal call or a hands-free call (step S46). If the call is a normal call, the call connection control (off-hook) is performed in response to the incoming call when the output voltage A (mV) (= folding angle 5 degrees) is detected (step S47) (step S48). When the call mode is a hands-free call, call connection control is performed (step S48) when the output voltage B (mV) (= folding angle 20 degrees) is detected (step S49).

  Next, consider a case where the conversation is terminated during a call with the other party (step S50), and the user disconnects the line by closing the portable terminal device 1. When the upper housing 2 and the lower housing 3 are closed using the hinge portion 8 as a fulcrum (step S51), the folding angle is reduced. As the folding angle decreases, the magnet 31 mounted on the upper housing 2 and the Hall element 41 mounted on the lower housing 3 approach each other (Step S52), and the magnetic flux density detected by the Hall element 41 increases, The element output voltage (step S53) gradually increases.

  The control unit 54b recognizes whether the call mode is a normal call or a hands-free call based on the setting information in the call mode information unit 57 (step S54). If the call mode is a normal call, the output voltage A ( mV) (= folding angle 5 degrees) is detected (step S55), call disconnection control (on-hook) for disconnecting the wireless line is performed (step S56). If the call is a hands-free call in step S54, call disconnection control is performed when the output voltage B (mV) (= folding angle 20 degrees) is detected (step S57) (step S56).

In a hands-free call, the other party's voice from the speaker 11 is louder than in a normal call, and the transmission level is set higher than in a normal call, so that howling and echo are more likely to occur. is there. For this reason, howling and echo can be prevented by performing the call connection / call disconnection control in a state where the folding angle is larger, that is, the position where the distance between the speaker 11 and the microphone 21 is further away.
(Modification of the embodiment)
In addition, this invention is not limited only to the above-mentioned embodiment, It can implement in various deformation | transformation in the range which does not deviate from the summary of this invention. For example, in each of the embodiments, the magnet 31 is mounted on the upper housing 2 and the hall element 41 is mounted on the lower housing 3, but this may be reversed. That is, even if the Hall element 41 is mounted on the upper housing 2 and the magnet 31 is mounted on the lower housing 3, the effect of the present invention does not change. In each of the above embodiments, the Hall element is used as the magnetic force detection means. However, other sensors (such as an MR sensor) that detect the magnetic force may be used in addition to the Hall element.

In 1st Embodiment of this invention, it is a mounting figure which shows the internal arrangement | positioning structure of the state which opened the hinge part. In 1st Embodiment of this invention, it is a mounting figure which shows the internal structure of a state in which a hinge part is 20 degrees of folding angles. In 1st Embodiment of this invention, it is a mounting diagram which shows the internal structure of a state in which a hinge part is a folding angle of 5 degree | times. In 1st Embodiment of this invention, it is a mounting diagram which shows the internal structure of a state where a hinge part is a fully-closed state and a folding angle is 0 degree | times. It is a functional block diagram of a 1st embodiment of the present invention. It is a figure which shows the characteristic of a Hall element. It is a figure which shows the characteristic of the folding angle and magnetic flux density in 1st Embodiment of this invention. It is a figure which shows the relationship between the folding angle in 1st Embodiment of this invention, a Hall element output, and a telephone call mode. It is a flowchart which shows operation | movement of 1st Embodiment of this invention. It is a figure which shows roughly the arrangement | positioning relationship of the example which applied this invention to the rotary portable terminal device. It is a functional block diagram of a 2nd embodiment of the present invention. It is a figure which illustrates the relationship between the folding angle in a 2nd Embodiment of this invention, a Hall element output, and a receiving volume. It is a flowchart which shows operation | movement of 2nd Embodiment of this invention. It is a figure which illustrates the relationship between the folding angle in the modification of 2nd Embodiment of this invention, a Hall element output, and a receiving volume. It is a functional block diagram of a 3rd embodiment of the present invention. It is a figure which shows the relationship between the folding angle in 3rd Embodiment of this invention, a Hall element output, and a telephone call mode. It is a flowchart which shows operation | movement of 3rd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Portable terminal device 2 Upper housing | casing 3 Lower housing | casing 4 Display part 5 Upper side board 6 Lower side board 7 Battery 8 Hinge part 9 Antenna 10 Receiver 11 Speaker 21 Microphone 31 Magnet 41 Hall element 51 Power supply part 52 Amplifying part 53 Output voltage Detection unit 54 Control unit 54a Control unit 54b Control unit 55 Transmission mode information unit 56 Received volume information unit 57 Call mode information unit

Claims (18)

A first casing having at least a receiver and a second casing having at least a microphone are pivotally connected by a hinge portion, thereby closing the terminal where the first and second casings overlap each other. A portable terminal device that takes a state and a terminal open state in which the first and second housings are separated from each other,
Magnetic force generating means provided on one of the first and second housings;
Magnetic force detection means provided on the other of the first and second housings;
A boundary between changes in the terminal open state and the terminal closed state is detected by the detected magnetic force of the magnetic force detection means, and the call is disconnected when the terminal is changed to the closed state during a call in the terminal open state. And a control means for controlling to respond to an incoming call when the terminal changes to an open state during an incoming call.
The said control means changes the boundary of the change of the said terminal open state and a terminal closed state according to the setting state of the said portable terminal device, The portable terminal device characterized by the above-mentioned. A first casing having at least a receiver and a second casing having at least a microphone are pivotally connected by a hinge portion, thereby closing the terminal where the first and second casings overlap each other. A portable terminal device that takes a state and a terminal open state in which the first and second housings are separated from each other,
Magnetic force generating means provided on one of the first and second housings;
Magnetic force detection means provided on the other of the first and second housings;
When the detected magnetic force of the magnetic force detecting means is greater than or equal to a predetermined value, the terminal is considered to be in the closed state, and when the detected magnetic force is less than a predetermined value, the terminal is considered to be in the open state. And a control means for controlling to respond to an incoming call by detecting the change in state and detecting a change in the state when the terminal is closed and the call is disconnected and the terminal is opened during the incoming call in the closed state. Prepared,
The said control means changes the said predetermined value according to the setting state of the said portable terminal device, The portable terminal device characterized by the above-mentioned. The portable terminal device according to claim 2, wherein the control unit changes the predetermined value according to a transmission level setting of the microphone. 3. The portable terminal device according to claim 2, wherein the control unit changes the predetermined value in response to the transmission mode of the portable terminal device being switched from the normal mode to the manner mode. 3. The portable terminal device according to claim 2, wherein the control unit changes the predetermined value in accordance with a reception volume setting of the receiver. The first housing further includes a hands-free speaker.
3. The portable terminal device according to claim 2, wherein the control unit changes the predetermined value in response to a call mode of the portable terminal device being switched from a normal mode to a hands-free mode. The portable terminal device according to claim 6, wherein in the hands-free mode, the transmission level of the microphone is higher than normal. The portable terminal device according to claim 1, wherein a permanent magnet is used as the magnetic force generation unit. 8. The portable terminal device according to claim 1, wherein a hall element is used as the magnetic force detection means. The portable terminal device according to any one of claims 1 to 9, further comprising a foldable structure in which the first and second housings are folded so as to face each other by the hinge portion. The said 1st and 2nd housing | casing was equipped with the rotary structure which is rotated and folded while maintaining a mutually parallel state with the said hinge part, The any one of Claim 1 thru | or 9 characterized by the above-mentioned. Mobile terminal device. A first casing having at least a receiver and a second casing having at least a microphone are pivotally connected by a hinge portion, thereby closing the terminal where the first and second casings overlap each other. A control method of a portable terminal device that takes a state and a terminal open state in which the first and second housings are separated from each other,
Detecting the magnetic force of the magnetic force generating means provided in one of the first and second casings by the magnetic force detecting means provided in the other of the first and second casings;
A boundary between changes in the terminal open state and the terminal closed state is detected by the detected magnetic force of the magnetic force detection means, and the call is disconnected when the terminal is changed to the closed state during a call in the terminal open state. The terminal responds to an incoming call when the terminal changes to an open state during an incoming call, and the boundary between the terminal open state and the terminal closed state is changed according to the setting state of the mobile terminal device. The control method of the portable terminal device. A first casing having at least a receiver and a second casing having at least a microphone are pivotally connected by a hinge portion, thereby closing the terminal where the first and second casings overlap each other. In a control method of a mobile terminal device that takes a state and a terminal open state in which the first and second housings are separated from each other,
Detecting the magnetic force of the magnetic force generating means provided in one of the first and second casings by the magnetic force detecting means provided in the other of the first and second casings;
When the detected magnetic force is greater than or equal to a predetermined value changed according to the setting state of the mobile terminal device, the terminal closed state, when less than a predetermined value, the terminal open state,
This state change is detected when the terminal is folded while the terminal is in the open state and the call is disconnected, and the state change is detected when the terminal is closed and the terminal is opened during the incoming call. Control to answer incoming calls by detecting
A method for controlling a portable terminal device. 14. The method of controlling a mobile terminal device according to claim 13, wherein the predetermined value is changed according to a transmission level setting of the microphone. 14. The method of controlling a mobile terminal device according to claim 13, wherein the predetermined value is changed in response to the transmission mode of the mobile terminal device being switched from the normal mode to the manner mode. 14. The method of controlling a mobile terminal device according to claim 13, wherein the predetermined value is changed according to a reception volume setting of the receiver. The first housing further includes a hands-free speaker.
14. The method of controlling a mobile terminal device according to claim 13, wherein the predetermined value is changed in response to a call mode of the mobile terminal device being switched from a normal mode to a hands-free mode. 18. The method of controlling a mobile terminal device according to claim 17, wherein in the hands-free mode, the transmission level of the microphone is higher than that in a normal state.

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