JP2006042200A - Mobile terminal stand - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make a user to quickly respond to an incoming call even when the user is in a place away from the mobile terminal. <P>SOLUTION: A mobile terminal stand 1 is equipped with antenna coil part 5 to detect electric waves generated by mobile terminal A in response to an incoming call when there is a incoming to mobile terminal A from a device of communication partner, the first to third sensors 4a-4c to detect voice pulse signals generated at an unspecified position, driving wheels 4a, 4b to move mounting stand 2, stepping motor M<SB>R</SB>, M<SB>L</SB>to carry out rotary drive of the driving wheels, and CPU8 to calculate the incoming direction based on a detection result of the signal pulse signals as well as control the stepping motor M<SB>R</SB>, M<SB>L</SB>for moving the mounting stand 2 in the incoming direction after controlling to start detection of voice pulse signals at the first to third sensors 4a-4c in response to detection of electric waves at antenna coil part5. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a mobile terminal cradle for mounting a mobile terminal that performs wireless communication with a communication partner apparatus.

Conventionally, in a mobile terminal such as a mobile phone, a device has been devised to clearly notify the user of an incoming call from a communication partner. As an example of such a technique, an accessory that detects a radio wave emitted at the time of an incoming call and emits light is known. Also, as described in Patent Document 1 below, there is a known receiving device that detects a radio wave emitted from a mobile phone at the time of an incoming call, drives a motor, and rotates and moves wheels provided at both ends of the device. It has been.
Utility Model Registration No. 3074584

  However, the above-described conventional accessory has a problem that it is difficult for the user to notice an incoming call when the user does not wear the portable terminal. On the other hand, according to the conventional receiving device, it is possible to clearly notify the user of the incoming call, but when the user is away from the mobile terminal, the response operation for the incoming call is still delayed. Tended to end up.

  Therefore, the present invention has been made in view of such problems, and even when the user is located at a location away from the mobile terminal, the mobile terminal can respond more quickly to incoming calls. The purpose is to provide a table.

  In order to solve the above-described problems, a mobile terminal cradle according to the present invention is a mobile terminal cradle on which a mobile terminal that performs wireless communication with a communication partner device is placed, When there is an incoming call to the terminal, an incoming call detection means for detecting a radio wave emitted from the portable terminal in response to the incoming call, a signal detection means for detecting a signal emitted from an unspecified position, and the portable terminal installation Detection of the signal after controlling to start detection of the signal in the signal detection means in response to detection of the radio wave by the drive wheel for moving the table, the drive means for rotationally driving the drive wheel, and the incoming detection means And a control unit that calculates the arrival direction of the signal based on the result and controls the driving unit so that the mobile terminal pedestal moves in the arrival direction.

  According to such a mobile terminal stand, after the incoming call detecting means detects an incoming call from the communication partner equipment to the mobile terminal, the signal detecting means detects a signal such as a voice emitted from an unspecified position, The control means calculates the arrival direction of the signal from the detection result, and controls the drive means of the drive wheels so that the mobile terminal cradle moves in the arrival direction. Thereby, when an incoming call is received from the communication partner facility, the mobile terminal can be moved in the direction of the user based on the signal transmitted from the user.

  The signal detection means includes first and second sensors, and a third sensor provided at a position away from a straight line connecting the first and second sensors, and the control means includes first to first sensors. It is preferable to derive each other's time difference from the signal detection time in the third sensor and calculate the arrival direction of the signal based on the time difference.

  With such a configuration, the arrival direction in two directions is calculated from the time difference between the detection times of the first and second sensors, and the true arrival is detected from the two arrival directions from the detection time of the third sensor. Since the direction can be determined, the direction in which the user is positioned can be calculated with a simple configuration, and the movement of the mobile terminal pedestal can be controlled more smoothly.

  Further, the signal detection means detects a pulse signal emitted from an unspecified position, and the control means controls the signal detection means to start detecting the pulse signal, and then the second and subsequent times of the pulse signal. It is also preferable to calculate the arrival direction of the signal based on the detection result. In this case, when the pulse signal is detected twice or more, the second and subsequent detection results are used, so that erroneous recognition of the signal emitted from the user can be prevented.

  Still further, the incoming call detection means preferably includes an antenna coil, and preferably detects an electromotive force induced in the antenna coil by a radio wave emitted from the mobile terminal. With such an incoming call detection means, it is not necessary to supply a voltage to the incoming call detection means, so that power consumption can be reduced and the device configuration can be simplified.

  According to the mobile terminal cradle of the present invention, it is possible to respond more quickly to an incoming call even when the user is located at a location away from the mobile terminal.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of a mobile terminal stand according to the present invention will be described in detail with reference to the drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 1 is a plan view showing a preferred embodiment of a mobile terminal cradle according to the present invention, and FIG. 2 is a side view of the mobile terminal cradle of FIG. This mobile terminal stand 1 is for mounting a mobile terminal that performs wireless communication with a communication partner apparatus. Examples of portable terminals to be placed include devices capable of wireless communication via a mobile communication network such as a mobile phone, a PHS (Personal Handyphone System), and a PDA (Personal Digital Assistance).

  As shown in FIGS. 1 and 2, the mobile terminal stand 1 has a mounting base 2 formed in a rectangular parallelepiped shape, and the outer shape of the mobile terminal A to be placed is placed at the center of the upper surface of the mounting base 2. (Hereinafter, the long side direction of the upper surface of the mounting table 2 is referred to as the X direction and the short side direction is referred to as the Y direction). The concave portion 3 includes a main body placing portion 3a formed in the same shape as the outer shape of the main body portion of the mobile terminal A and an antenna formed in the same shape as the outer shape of the wireless communication antenna protruding from the main body portion of the mobile terminal A. And a mounting portion 3b. The concave portion 3 is for accommodating the main body of the portable terminal A and the antenna for wireless communication when the portable terminal A is placed on the placement table 2, and stabilizing these positions on the upper surface of the placement table 2. is there.

  In addition, first to third sensors (signal detection means) 4a, 4b, and 4c are provided at three corners on the top surface of the mounting table 2. The first and second sensors 4a and 4b are fixed so as to be positioned at two corners on the short side of the upper surface of the mounting table 2, and the third sensor 4c is a target in a diagonal direction with respect to the first sensor 4a. Fixed in position. That is, the first and second sensors 4a and 4b are positioned opposite to each other in the Y direction on the top surface of the mounting table 2, and the third sensor 4c is in the X direction from a straight line connecting the first and second sensors 4a and 4b. It is located so as to be separated from each other. These first to third sensors 4a, 4b, and 4c are microphones for detecting an audio pulse signal emitted from an external unspecified position. The “voice pulse signal” here means a voice signal that is turned on and off within a specific time such as applause and voice. As such a microphone, an electrodynamic type, an electrostatic type, and a piezoelectric type microphone are used. Among them, an electrostatic type microphone is preferably used because it is small and has high sensitivity stability.

  Furthermore, the mounting table 2 has an antenna coil section (incoming detection means) 5 in the vicinity of the antenna mounting section 3b. The antenna coil unit 5 detects a radio wave transmitted from the mobile terminal A in response to an incoming call when an incoming call is received from the communication partner apparatus (not shown) to the mobile terminal A. In this case, the antenna coil unit 5 is installed in the vicinity of the antenna mounting unit 3b in order to detect radio waves emitted from the wireless communication antenna A1 of the mobile terminal A to respond to incoming calls (see FIG. 3). ).

  Here, FIG. 4 is a circuit diagram showing a schematic configuration of the antenna coil unit 5. As shown in the figure, the antenna coil unit 5 includes an antenna coil L that is a conductor wound at one end and grounded in a spiral shape, one end side connected to the other end of the antenna coil L, and the other end side serving as an output terminal. And a connected diode D. With such a configuration, when a radio wave is emitted from the radio communication antenna A1, the magnetic flux inside the antenna coil L changes. As a result, an induced electromotive force is generated at both ends of the antenna coil L, and is output to the output side via the diode D. By supplying current, radio waves are detected on the output side. Note that the inductance of the antenna coil L and the electric capacity of the diode D are determined so that the frequency of the radio wave generated from the radio communication antenna A1 is sufficiently sensitive.

  Returning to FIG. 1 and FIG. 2, a pair of driving wheels 6 a and 6 b for moving the mounting table 2 and a pair of driven wheels 7 a and 7 b are provided on the lower surface side of the mounting table 2. The drive wheels 6a and 6b are rotationally driven independently by drive means described later, and move the mounting table 2 with the mobile terminal A mounted thereon.

  Next, the internal configuration of the mobile terminal stand 1 will be described. FIG. 5 is a diagram illustrating a connection relationship of each component in the mobile terminal cradle 1.

As shown in the figure, the first to third sensors 4a to 4c and the antenna coil section 5 include a CPU (Central Processing Unit) 8 as control means, EEPROM (Electrically Erasable Programmable ROM), data such as a flash ROM. A rewritable ROM (Read Only Memory) or a memory 9 constituted by a RAM (Random Access Memory) is connected. The CPU 8 is an arithmetic device that calculates and controls the moving direction of the mounting table 2 based on the detection results of the first to third sensors 4a to 4c and the antenna coil unit 5, and the memory 9 is used for arithmetic processing by the CPU 8. This is a memory for storing work data and programs used at the time. Further, the CPU 8, the drive wheels 6a, the stepping motor _M R of the driving means for rotationally driving the 6b, _{M L} is a stepping motor _M R, supplies a drive pulse current to the _{M L} motor control circuit 10R, 10L Connected through.

The CPU 8 controls to start detection of the audio pulse signal in the first to third sensors 4a to 4b in response to the detection of the radio wave by the antenna coil unit 5. Specifically, when the CPU 8 detects an incoming call based on the output current from the antenna coil unit 5, the CPU 8 turns on the circuits in the first to third sensors 4a to 4b and resets the timers for measuring each time. Elapsed time (detection time) Ta at which detection of a detection signal equal to or higher than a preset threshold _Vth is started based on detection signals of voice pulse signals such as applause and voice from the user output from the third sensors 4a to 4b. Tb and Tc are stored.

Further, the CPU 8 calculates a time difference ΔTab from the elapsed times Ta and Tb related to the first and second sensors 4a and 4b, and on the horizontal plane (on the plane parallel to the X direction and the Y direction) of the audio pulse signal from ΔTab. Two candidates for the arrival direction are calculated. According to the example of FIG. 6, when the audio pulse signal comes from the outside of the mounting table 2 on the first and second sensors 4a, 4b side with an inclination of an angle θ with respect to the Y direction, the CPU 8 Based on the time difference ΔTab between the elapsed times Ta and Tb and the sound speed, the path difference “a” of the voice pulse signals arriving at the first and second sensors 4a and 4b is calculated. Then, from a distance W ₁₂ and the path difference a between the first sensor 4a and the second sensor, calculates a candidate for two DOA ± theta by the following equation (1), the arrival direction two directions D1, D2 Refine to.
θ = cos ⁻¹ (a / W ₁₂ ) (0 ≦ θ ≦ 180 °) (1)

  Further, from the time difference ΔTcb = Tc−Tb between the elapsed times Tb and Tc related to the second and third sensors 4b and 4c, the CPU 8 determines that the arrival direction is + θ and ΔTcb is a negative value when ΔTcb is a positive value. Uniquely determines that the arrival direction is −θ (in FIG. 6, + θ is the right direction and −θ is the left direction).

Further, CPU 8 based on the arrival direction of the sound pulse signal calculated as described above, the stepping motor so as to move toward the mounting table 2 in its direction of arrival M _R, the rotational speed N _R of M _L, N _L is calculated. Then, CPU 8, the rotational speed _N R, _{N L} and outputs the motor control circuit 10R, the 10L, the motor control circuit 10R, the rotational speed _N R by 10L, _{N L} drive pulse current stepping motor _M R corresponding to, It is supplied to the M _L. In this way, CPU 8 controls the rotational driving of the stepping motor _M R, _{M L.}

  Hereinafter, with reference to FIGS. 7 to 8, the operation of the mobile terminal stand 1 will be described in detail. FIG. 7 is a first sequence diagram illustrating the operation of the mobile terminal cradle 1, and FIG. 8 is a second sequence diagram illustrating the operation of the mobile terminal cradle 1.

  First, referring to FIG. 7, when there is an incoming call from the communication partner apparatus to portable terminal A, antenna coil unit 5 detects a radio wave emitted from portable terminal A in response to the incoming call, and outputs an output current to CPU (Step S01). At the same time, the user senses an incoming call from the ringing tone of the mobile terminal A (step S02). When the CPU 8 receives the output current from the antenna coil unit 5, the CPU 8 turns on the first to third sensors 4a to 4c, resets the timer for time measurement, and the elapsed time Ta for the first to third sensors 4a to 4c. The value of .about.Tc is cleared (step S03).

Thereafter, when the first applause is struck by the user, the applause sound arrives at the first to third sensors 4a to 4c as an audio pulse signal (step S04). On the other hand, the 1st-3rd sensors 4a-4c detect the audio | voice pulse signal which arrived, and output a detection signal to CPU8 (step S05). When the detection signal output from the first sensor 4a is equal to or greater than a preset threshold value _Vth , the CPU 8 stores the elapsed time at which the detection signal was output as Ta (1) in the memory 9 (step S06). ). Similarly, based on the detection signals output from the second and third sensors 4b and 4c, the elapsed times when the detection signals are output are stored in the memory 9 as Tb (1) and Tc (1) (steps). S07, S08).

Furthermore, when the user claps the second time, the applause sound arrives at the first to third sensors 4a to 4c as an audio pulse signal (step S09). The 1st-3rd sensors 4a-4c detect the audio | voice pulse signal which arrived, and output a detection signal to CPU8 (step S10). In contrast, CPU 8 is in the first to third first-time elapsed time Ta in the sensor 4a~4c (1) ~Tc (1) within a predetermined time _{T 0} from the earliest time among the respective sensors 4a When the detection signal is output from ˜4c, the elapsed time when the detection signal is output is stored in the memory 9 as Ta (2) to Tc (2) (steps S11 to S13). On the other hand, if the detection signal from the first to third sensor 4a~4c a predetermined time _T in ₀ earliest time among the first round of elapsed time Ta (1) ~Tc (1) is not outputted, first to The elapsed times Ta to Tc related to the third sensors 4a to 4c are cleared, and the process is stopped.

Referring to FIG. 8, the CPU 8 calculates the time difference ΔTab from the second elapsed times Ta (2) and Tb (2) related to the first and second sensors 4a and 4b, and then the second applause. Are calculated for the direction of arrival of the voice pulse signal corresponding to (step S14). Next, the CPU 8 calculates a time difference ΔTcb from the second elapsed times Tb (2) and Tc (2) related to the second and third sensors 4b and 4c, and then calculates a voice pulse from the candidate ± θ. The arrival direction of the signal is uniquely specified (step S15). Thereafter, CPU 8, based on the arrival direction identified by the above-described procedure, as the mounting table 2 is moved toward the arrival direction, the stepping motor M _R, M _L rotation step number N _{R of,} N _L is calculated (step S16). Then, the CPU 8 outputs the calculated rotation step numbers N _R and N _L to the motor control circuits 10R and 10L, respectively (step S17). In contrast, the motor control circuit 10R, stepping from 10L motor _M R, with respect to _{M L,} rotation step number _N R, the drive pulse signal corresponding to _{N L} is supplied, the stepping motor _M R, is _{M L} Rotation Driven (step S18). As a result, the mounting table 2 moves in the direction of the user that is the arrival direction of the applause sound (step S19).

According to the portable terminal stand 1 described above, after the antenna coil unit 5 detects an incoming call from the communication partner facility to the portable terminal A, the first to third sensors 4a to 4c are emitted from unspecified positions. The CPU 8 calculates the arrival direction of the sound pulse signal from the detection result, and the stepping motor M which is a drive means for the drive wheels 6a and 6b so that the mounting table 2 moves in the arrival direction. _R, controls the rotation of the _{M L.} Thereby, when there is an incoming call from the communication partner facility, the mobile terminal A can be moved in the direction of the user based on the voice pulse signals such as applause and voice emitted from the user. Further, the incoming call can be effectively transmitted to the user by receiving the incoming call as an operation from the communication partner facility.

  In addition, the arrival direction in two directions on the horizontal plane is calculated from the time difference between the detection times of the first and second sensors 4a and 4b, and the true direction on the horizontal plane is calculated from the arrival directions in the two directions from the detection time of the third sensor 4c. Since the direction in which the user is positioned can be calculated with a simple configuration, the movement of the mounting table 2 can be controlled more smoothly.

  Furthermore, since the voice pulse signal from the user is detected twice or more continuously, and the second and subsequent detection results detected within the predetermined time from the first time are used for calculating the arrival direction, Misrecognition of generated signals can be prevented. That is, even when noise or the like not intended by the user from the outside is generated, erroneous recognition of the direction of arrival of the voice pulse signal can be prevented by using the second and subsequent detection results.

  Furthermore, since the antenna coil unit 5 includes the antenna coil L, it is not necessary to supply a voltage to the incoming call detection means, so that power consumption can be reduced and the device configuration can be simplified.

  In addition, this invention is not limited to embodiment mentioned above. For example, in the mobile terminal cradle 1, the arrival direction is calculated from the second elapsed times Ta (2) to Tc (2) related to the first to third sensors 4a to 4c. It may be calculated based on the elapsed time after the third time, or may be operated so as to be calculated from the average value of the time difference between the elapsed times of each time.

  Further, the driving wheels in the mobile terminal stand 1 are not limited to a specific configuration, and may be configured by two pairs of driving wheels, or may be added steering wheels having a steering mechanism.

  In addition, in the portable terminal stand 1, a recess 3 having the same shape as the outer shape of the mobile terminal A is formed. Various holding means for disposing can be employed. For example, as such a holding means, a groove for placing the radio communication antenna A1, an insertion slot for inserting the radio communication antenna A1, or the like can be used.

It is a top view which shows suitable one Embodiment of the stand for portable terminals by this invention. It is a side view of the stand for portable terminals of FIG. It is a side view in the state in which the portable terminal of the stand for portable terminals of FIG. 1 was mounted. It is a circuit diagram which shows schematic structure of the antenna coil part of FIG. It is a figure which shows the connection relation of each component inside the stand for portable terminals. It is a figure which shows the relationship between the arrival direction of an audio | voice pulse signal, and the position of the 1st-3rd sensor of FIG. It is a 1st sequence diagram which shows operation | movement of the stand for portable terminals. It is a 2nd sequence diagram which shows operation | movement of the stand for portable terminals.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Mobile terminal stand, 2 ... Mounting base, 3 ... Recessed part, 3a ... Main body mounting part, 3b ... Antenna mounting part, 4a-4c ... 1st-3rd sensor, 5 ... Antenna coil part, 6a, 6b ... driving wheel, 7a, 7b ... driven wheel, 8 ... CPU, 9 ... memory, 10R, 10L ... motor control circuit, D ... diode, L ... antenna coil, _{M R, M} L _... stepping motor, A ... mobile terminal , A1... Antenna for wireless communication.

Claims (4)

A mobile terminal cradle for mounting a mobile terminal that performs wireless communication with a communication partner device,
An incoming call detecting means for detecting a radio wave emitted from the mobile terminal in response to the incoming call when an incoming call is received from the communication partner device to the mobile terminal;
Signal detection means for detecting a signal emitted from an unspecified position;
Driving wheels for moving the mobile terminal stand;
Drive means for rotationally driving the drive wheels;
After controlling to start detection of the signal in the signal detection means in response to detection of the radio wave by the incoming call detection means, the arrival direction of the signal is calculated based on the detection result of the signal, and Control means for controlling the driving means so that the mobile terminal stand moves in the direction of arrival;
A pedestal for a portable terminal comprising: The signal detection means includes first and second sensors, and a third sensor provided at a position away from a straight line connecting the first and second sensors,
The control means derives a time difference from the detection time of the signal in the first to third sensors, and calculates the arrival direction of the signal based on the time difference.
The table for a portable terminal according to claim 1, wherein: The signal detection means detects a pulse signal emitted from an unspecified position,
The control means, after controlling to start detection of the pulse signal in the signal detection means, calculates the arrival direction of the signal based on the detection results of the pulse signal for the second time or later,
The table for portable terminals according to claim 1, wherein the table is for mobile terminals. The incoming call detection means includes an antenna coil, and detects an electromotive force induced in the antenna coil by a radio wave emitted from the mobile terminal.
The pedestal for a portable terminal according to any one of claims 1 to 3.

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