JP2003198670A - Portable telephone system and its control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To off-hook automatically a portable telephone system without using any exclusively used sensor in the case where the off-hooking of the system becomes necessary when an incoming call arrives. <P>SOLUTION: The portable telephone system has a function of automatically off-hooking the system itself when an incoming call arrives. The telephone system has status detecting means (5 and 8) which detect the inclined state of the system when the incoming call arrives, and a control means 10 which fetches the detection outputs of the detecting means (5 and 8) and automatically off-hooks the system at the moment the operating state of the system is detected after the system is taken out. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable telephone device and a control method thereof, and more particularly to a portable telephone device having a function of automatically off-hook when an incoming call arrives and a control method thereof.

[0002]

2. Description of the Related Art As a conventional portable telephone device having a function of automatically going off-hook when an incoming call arrives, Japanese Patent Laid-Open No. Hei.
No. 001-94636 and Japanese Patent Laid-Open No. 2000-2286.
89 and Japanese Patent Application Laid-Open No. 9-261299. The mobile phone device described in Japanese Patent Laid-Open No. 2001-94636 has a built-in tilt sensor, and when a call is received, the tilted terminal is tilted when the sideways-positioned terminal is vertically placed on the ear. The change is detected by a tilt sensor and automatically off-hook.

Further, the portable telephone device described in Japanese Patent Laid-Open No. 2000-228689 is provided with an optical sensor, and an off-hook operation and an on-hook operation are performed by using a signal which is detected by the optical sensor and which indicates a change in the storage state of the portable telephone device. It is something that is done. Furthermore, the mobile phone device (mobile terminal) described in Japanese Patent Laid-Open No. 9-261299 has a built-in shock sensor, and when the main body is gripped, a detection signal from the shock sensor can be accepted. When the main body swings down, the hook control unit receives the acceleration detection signal from the shock sensor and can respond (off-hook).

[0004]

The above-mentioned conventional portable telephone devices are uneconomical because they each require a dedicated sensor to detect whether or not they need to go off-hook when an incoming call arrives. There was a problem. The present invention has been made in view of the above circumstances, and a mobile phone device that can automatically go off-hook when it is necessary to go off-hook when a call arrives without using a dedicated sensor, and The purpose is to provide a control method thereof.

[0005]

In order to achieve the above object, the invention according to claim 1 is a method for controlling a portable telephone apparatus having a geomagnetic sensor for detecting a direction, wherein the portable telephone is used when an incoming call is received. The present invention is characterized in that when the operation of holding the telephone device in the hand is detected based on the output of the geomagnetic sensor, it automatically goes off-hook.

The invention according to claim 2 is a portable telephone device having a function of automatically off-hooking when an incoming call is received, and the portable telephone device is in a tilted state when an incoming call is received. And a control means for fetching the detection output of the state detection means and automatically off-hooking when the operating state of holding the portable telephone device in hand is detected.

The invention described in claim 3 is the same as that of claim 2.
In the mobile phone device according to [1], the state detection means is
A geomagnetism sensor for detecting geomagnetism, and the output of the geomagnetism sensor is taken in, and the tilt angle of the device body is detected by referring to a table indicating the relationship between the output of the geomagnetism sensor and the tilt angle of the device body stored in advance. And a decoder that operates.

The invention described in claim 4 is the same as that of claim 2
In the mobile phone device according to any one of 3 or 3, the control means determines that an operation state in which the mobile phone device is held in a hand has occurred when the tilt angle detected by the decoder is equal to or larger than a predetermined angle. Is characterized by.

The invention according to claim 5 is the same as claim 3
In addition, in the mobile phone device according to any one of 4 and 4, the control means sets the geomagnetic sensor to an operating state when an incoming call is received, and sets the geomagnetic sensor to a non-operating state when on-hook.

The invention described in claim 6 is the same as claim 3
7. In the mobile phone device according to any one of 1 to 6, the geomagnetic sensor is usually mounted on the device body for use in direction detection, and this is also used for detecting the tilt angle of the device body. It is characterized by doing.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows an external configuration of a mobile phone device according to an embodiment of the present invention. In the housing 1a of the mobile phone device 1, a circuit board 2 on which electronic circuits for realizing various functions of the mobile phone device 1 are mounted, and a geomagnetic sensor 5 normally used for direction detection are built in. There is. Electronic circuits other than the geomagnetic sensor 5 are mounted on the circuit board 2.

Next, FIG. 2 shows an electrical configuration of the portable telephone device 1 according to the embodiment of the present invention. A mobile phone device according to an embodiment of the present invention is a mobile phone device that is provided with a geomagnetic sensor for direction detection in advance, and the operation of taking out the mobile phone device when an incoming call is received is based on the output of the geomagnetic sensor. The feature is that it automatically goes off-hook when it is detected.

In FIG. 2, a mobile phone device 1 includes a mobile phone function unit 3, a GPS module 4, an XY biaxial geomagnetic sensor 5, an A / D converter 6, a decoder 8 and a ROM.
9, a control circuit 10, and a RAM 11. The mobile phone function unit 3 has a mobile phone communication module 30, an operation input unit 31, and a display unit 32. The mobile phone communication module 30 includes a CPU, a ROM, and an R for realizing various functions such as a telephone function, a music reproducing function, and a game function.
It is composed of an AM, an antenna, a wireless communication unit, a voice CODEC, a microphone, a speaker, a music reproducing unit and the like.

The operation input unit 31 is composed of a start key used to start a call, an end key used to end a call, a numeric key, a function key for setting various functions, a power key, and the like. ing. The display unit 32 is, for example, a liquid crystal display (LCD) that displays various data. A plurality of GPS modules 4 (3
(Or more) GPS satellites for position measurement, the raw data is transmitted to the GPS base station, the positioning calculation result is received from the GPS base station, stored in a predetermined memory area of the RAM 11, and updated. It has a function to do.

The XY biaxial geomagnetic sensor 5 is a sensor for detecting the azimuth of the mobile phone unit 1. In the present invention, the user detects the tilt angle of the mobile phone unit 1 and the user detects the mobile phone unit 1.
It is also used to detect the operating state of taking out. Where XY
The electrical configuration of the biaxial geomagnetic sensor 5 is shown in FIG. In the figure, the XY biaxial geomagnetic sensor 5 is a GMR (GiantMag).
neto Resistive) circuit 50 and voltage / magnetic field conversion circuit 5
1 and. The GMR circuit 50 has a constant current bias circuit 500, an X-axis GMR element 501 that detects the X component of the earth magnetism, and a Y-axis GMR element 502 that detects the Y component of the earth magnetism.

Further, the constant current bias circuit 500 receives the ON control signal from the control circuit 10 and receives the X-axis GMR element 50.
A constant current is supplied to the 1 and Y axis GMR elements 502. X
The axis GMR element 501 and the Y-axis GMR element 502 are elements whose resistance values change according to changes in magnetism, and by applying a constant current to these elements as a bias, changes in magnetism are detected as changes in voltage. . That is, when the X-axis GMR element 501 and the Y-axis GMR element 502 forming the XY biaxial geomagnetic sensor 5 rotate, the X-axis component of the geomagnetism, Y,
The axial component changes, which appears as a voltage change. Voltage/
The magnetic field conversion circuit 51 uses the X-axis GMR element 50 when a magnetic field having a magnitude of 1 (Oe) in the X-axis positive direction is applied to the main body.
One output is “1”, Y-axis GMR element 502 output is “0”, and when a magnetic field having a magnitude of 1 (Oe) is applied to the main body in the X-axis negative direction, the X-axis GMR element 501 output is “−”.
1 ", the output of the Y-axis GMR element 502 becomes" 0 ", and when the magnetic field having the magnitude of 1 (Oe) in the positive direction of the Y-axis is applied to the main body, the output of the X-axis GMR element 501 becomes" 0 ", the Y-axis. GM
The output of the R element 502 becomes "1", and 1 (O
When the magnetic field having the magnitude of e) is applied to the main body, the X-axis G
It has a function of converting the voltage output from the GMR circuit 50 into a magnetic field value and outputting it so that the MR element 501 output becomes “0” and the Y-axis GMR element 502 output becomes “−1”.

The decoder 8 takes in the output of the XY biaxial geomagnetic sensor and detects the azimuth (azimuth angle) and the tilt angle of the portable telephone device 1.

The decoder 8 stores a conversion table showing the relationship between the azimuth (deg) and the inclination angle (deg) with respect to the output signals V _X (Oe) and V _Y (Oe) of the _XY biaxial geomagnetic sensor 5 shown in FIG. The built-in ROM is incorporated, and the azimuth and the tilt angle are respectively detected by referring to this conversion table.

Output values V _X , V _{Y of the XY} biaxial geomagnetic sensor 5
Is -0.35 in the response to geomagnetism in Japan.
Output value in the range of (Oe) to +0.35 (Oe),
The decoder 8 decodes the azimuth angle and the tilt angle with respect to the output values V _X and V _Y in this range. Then, when the tilt angle becomes, for example, 40 ° or more, it is detected that the mobile phone device 1 is held in the hand.

In the table shown in FIG. 4, the azimuth (deg),
Both inclination angle (deg) can be detected with an accuracy of at least 1 degree (indicated by an underlined portion in the table). Azimuth (deg) is XY2
Used as an electronic compass, which is the original purpose of the axial geomagnetic sensor 5, for direction detection and display. Various control programs and fixed data are stored in the ROM 9. Control circuit 1
0 controls each unit by executing the control program stored in the ROM 9.

The operation of the portable telephone device having the above configuration will be described with reference to the flow charts shown in FIGS.
This operation is performed by the control circuit 10 executing the control program stored in the ROM 9. 5 and 6, when the power key in the operation input unit 31 is operated to turn on the power, first, it is determined whether or not an incoming signal is input from the mobile phone communication module 30 to the control circuit 10 via the data bus 20. It is determined whether or not the call has arrived (step 100). If the call has not arrived, another process is performed, and the execution of this process ends.

On the other hand, when there is an incoming call, the control circuit 1
From 0, an ON control signal is output to the XY biaxial geomagnetic sensor 5, and the XY biaxial geomagnetic sensor 5 is turned on (step 101). Next, the XY 2-axis geomagnetic sensor 5 is turned on.
In this state, the constant current bias circuit 500 in the XY biaxial geomagnetic sensor 5 causes the X axis GMR element 501 and the Y axis GM to move.
A constant current is supplied to the R element 502, and the X-axis GMR element 5
01 and the voltage output from the Y-axis GMR element 502, the voltage / magnetic field conversion circuit 51 outputs the X component Vx and the Y component Vy of the magnetic field due to the geomagnetism (step 102).

Next, the X component Vx and the Y component Vy of the magnetic field due to the geomagnetism output from the XY biaxial geomagnetic sensor 5 are A /
It is converted into a digital value by the D converter 6. The normalized X component Vx and Y component Vy of the magnetic field are input to the decoder 8, and the conversion table shown in FIG. 4 stored in the built-in ROM is referred to by the decoder 8, and the azimuth angle (shooting azimuth) and the tilt angle ( (Horizontality) (step 103).

Next, the output of the decoder 8 is output to the control circuit 10.
(Step 104) and the tilt angle is 40 (de
g) It is determined whether or not the above is true, that is, whether or not the owner of the mobile phone device 1 has performed an operation of picking up the mobile phone device 1 (step 105). Tilt angle is 40 (deg)
If the number is less than the above, it is determined that the owner does not perform the operation of picking up the mobile phone device 1, and the execution of this process ends. The inclination angle set for this determination is 40 (deg) in the present embodiment, but any value may be used as long as it can be determined that the mobile phone device 1 has moved from the stationary state.

In step 105, the tilt angle is 40 (de
g) If it is determined to be the above, the mobile phone device 1
It is assumed that the owner of the mobile phone device 1 picks up the mobile phone device 1, and the control circuit 10 sends an off-hook signal to the data bus 20.
To the mobile phone function unit 3 via the (step 10
6). The mobile phone communication module 30 in the mobile phone function unit 3 receives the off-hook signal, puts it in the off-hook state, and shifts to the call state (step 108).

Then, it is determined whether or not the end of call is detected, that is, whether or not the end key in the operation input section 31 is operated (step 109). When the call end is detected, an on-hook signal is output from the mobile phone function unit 3 to the control circuit 10 via the data bus 20 (step 11).
0), the control circuit 10 turns off the XY biaxial geomagnetic sensor 5.
A control signal is output and the XY biaxial geomagnetic sensor 5 is turned off (step 111). Then, the control circuit 10
Under the control of (1), the line disconnection process is performed in the mobile phone communication module 30, and this process ends. The CPU in the communication module 30 and the control circuit 10 may be shared. In addition, in the flowchart shown in FIG.
When there is an incoming call, the XY 2-axis geomagnetic sensor is turned on, the output values of V _X and V _Y are stored as initial values, and an off-hook signal is output when a tilt is detected by a predetermined angle from the initial values. You may make it output.

According to the portable telephone device according to the embodiment of the present invention, the off-hook operation is performed by detecting the operation of taking out the portable telephone device. Therefore, the conventional portable telephone device can operate the off-hook key in the operation unit when receiving a call. It is possible to prevent the trouble that the call is cut off due to trouble. Also,
According to the mobile phone device according to the embodiment of the present invention, since the geomagnetic sensor that is installed in advance for the position information system (for azimuth detection) is also used for tilt detection of the mobile phone device main body, a tilt sensor or motion is newly added. Since it is not necessary to add a sensor or the like, the component space and the component cost can be saved.

Furthermore, since the geomagnetic sensor is driven by detecting an incoming call, it is possible to realize a system with low power consumption, which is suitable for a portable telephone device operated by battery drive.

[0029]

According to the first aspect of the present invention, since the off-hook operation is performed by detecting the operation of taking out the portable telephone device, the conventional portable telephone device takes time and effort to operate the off-hook key in the operation section when receiving a call. It is possible to prevent the trouble that the phone hangs up. Further, according to the mobile phone device according to the embodiment of the present invention, the tilt sensor of the position information system (for azimuth detection) is also used for tilt detection of the main body of the mobile phone device. Since it is not necessary to add a motion sensor or the like, a component space and a component cost can be saved.

According to the second and third aspects of the invention, since the off-hook operation is performed by detecting the operation of taking out the portable telephone device, it is time-consuming to operate the off-hook key in the operation section of the conventional portable telephone device when receiving a call. It is possible to prevent the trouble that the phone hangs up. According to the invention of claim 6, the tilt sensor and the motion sensor are newly added because the tilt detection of the mobile phone device body is also used as the geomagnetic sensor installed in advance for the position information system (direction detection). It is possible to save parts space and parts cost because there is no need to add the like.

According to the fourth aspect of the invention, when the tilt angle of the portable telephone device detected by the decoder is equal to or larger than the predetermined angle, it is determined that the operation state of taking out the portable telephone device has occurred. Can be prevented.

According to the fifth aspect of the present invention, the geomagnetic sensor is activated when an incoming call is received, and is deactivated when on-hook, so that the power consumption of the system can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view showing an external configuration of a mobile phone device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing an electrical configuration of the mobile phone device according to the embodiment of the present invention shown in FIG.

FIG. 3 is a block diagram showing a specific configuration of the XY biaxial geomagnetic sensor shown in FIG.

4 is an explanatory diagram showing the contents of a conversion table stored in a ROM in the decoder shown in FIG.

5 is a flowchart showing the operation of the mobile phone device shown in FIG.

FIG. 6 is a flowchart showing the operation of the mobile phone device shown in FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Mobile phone device, 3 ... Mobile phone function part, 4 ... GPS module, 5 ... XY 2-axis geomagnetic sensor (state detection means), 6 ... A / D converter, 8 ... Decoder (state detection means), 9 ... ROM 10 ... Control circuit (control means), 11
... RAM, 20 ... Data bus

Claims (6)

[Claims] 1. A method of controlling a mobile phone device having a geomagnetic sensor for azimuth detection, wherein at the time of detecting an operation of holding the mobile phone device in hand when an incoming call is received, based on an output of the geomagnetic sensor. A method for controlling a mobile phone device, which is characterized by automatically going off-hook. 2. A mobile phone device having a function of automatically going off-hook when an incoming call is received, the state detecting means detecting a tilted state of the mobile phone device when an incoming call is received, A mobile phone device, comprising: a control device that takes in a detection output of a state detection device and automatically goes off-hook when an operation state of holding the mobile phone device in hand is detected. 3. The state detecting means stores a geomagnetic sensor for detecting geomagnetism, and a table showing the relationship between the output of the geomagnetic sensor and the inclination angle of the main body of the device, which stores the output of the geomagnetic sensor. The mobile phone device according to claim 2, further comprising: a decoder for detecting an inclination angle of the device body. 4. The control means according to claim 2, wherein when the tilt angle detected by the decoder is equal to or larger than a predetermined angle, it is determined that an operation state of taking out the mobile phone device has occurred. The mobile phone device according to any one of the above. 5. The mobile phone according to claim 3, wherein the control unit activates the geomagnetic sensor when an incoming call arrives and deactivates the geomagnetic sensor when on-hook. Telephone device. 6. The geomagnetic sensor is usually mounted on the main body of the device for use in direction detection,
7. The mobile phone device according to claim 3, which is also used for detecting an inclination angle of the device body.