JP5263956B2 - Electronic device and program - Google Patents

Description

  The present invention relates to an electronic device and a program that execute azimuth measurement processing.

  2. Description of the Related Art Conventionally, in electronic devices such as mobile phones, there are an increasing number of users who require additional functions in addition to the communication function that is the original function of mobile phones, and products equipped with azimuth measurement have been commercialized. In such azimuth measurement, basically, azimuth is measured using a geomagnetic sensor.

  However, in mobile devices such as mobile phones, azimuth measurement is not always performed in a horizontally held state. For this reason, a technique is known in which an inclination sensor for correcting the inclination of the device is used together with a geomagnetic sensor so that an accurate azimuth can be measured even when it is not horizontal. (For example, patent document 1).

Japanese Patent Laid-Open No. 08-278137

  However, in the case of an electronic device such as a mobile phone, when there is an incoming call, the incoming call is notified by sound from a speaker or vibration of the device itself by a vibrator. If the alarm sound or the device itself vibrates, the tilt sensor (for example, a triaxial acceleration sensor) detects the alarm sound or the vibration of the device itself. It has been found by the applicant's examination that there is a drawback of measuring and displaying.

  In addition, the alarm sound or vibration of the device itself occurs not only when the telephone function is received, but also when, for example, a preset alarm time is reached, the timer expires, or the game is executed. In such a case, there is a problem that the triaxial acceleration sensor malfunctions and cannot perform its original function.

  The present invention has been made to solve the above-described problem, and even when the tilt (posture) information for accurately measuring the azimuth is subjected to vibration and the original tilt (posture) cannot be detected correctly, It enables to measure the direction with high accuracy.

In order to solve the above-described problem, an electronic device according to claim 1 of the present invention provides:
A geomagnetism detecting means for detecting geomagnetism, an inclination detecting means for detecting an inclination from the horizontal, and an orientation measuring means for measuring an orientation based on a detection result by the geomagnetism detecting means and a detection result by the inclination detecting means. Electronic equipment,
Vibration discriminating means for discriminating whether or not the electronic device has vibration;
Control means for performing azimuth measurement by the azimuth measurement means that excludes the detection result by the inclination detection means when it is determined that there is vibration by the vibration determination means;
It is characterized by providing.

The invention of claim 2 is the electronic device according to claim 1,
The control means includes
When it is determined that there is vibration by the vibration determination unit, the direction measurement excluding the detection result by the inclination detection unit is performed.
It is characterized by that.

The invention of claim 3 is the electronic device according to claim 1,
The control means includes
When it is determined that there is vibration by the vibration determination means, the detection itself by the inclination detection means is stopped.
It is characterized by that.

The invention of claim 4 is the electronic device according to claim 1,
The control means includes
When it is determined that there is no vibration by the vibration determination means, together with the detection result by the geomagnetism detection means, the direction measurement based on the detection result by the inclination detection means is performed.
It is characterized by that.

The invention of claim 5 is the electronic device according to claim 1,
The vibration discriminating means includes
Including stop determination means for determining whether or not vibration is eliminated,
The control means includes
When it is determined by the vibration determination means that there is no vibration, the direction measurement based on the detection result by the inclination detection means is resumed together with the detection result by the geomagnetism detection means,
It is characterized by that.

The invention of claim 6 is the electronic device according to claim 1,
The apparatus further comprises vibration generating means for generating vibration in the electronic device,
The vibration determining means includes direction determining means for determining a vibration direction by the vibration generating means,
The control means includes
When the vibration discriminating means determines that there is vibration, the inclination detecting means excludes the vibration in the direction matching the vibration direction by the vibration generating means and detects the inclination, and the azimuth measurement by the azimuth measuring means To do,
It is characterized by that.

The invention of claim 7 is the electronic device according to claim 1,
The tilt detection means is an acceleration detection means for detecting acceleration.
It is characterized by that.

The invention of claim 8 is the electronic device according to claim 1,
Communication means for communication;
An incoming call notification means for notifying that there has been an incoming call to the communication means;
Further comprising
The vibration generating means is a speaker or vibrator as the incoming call notification means.
It is characterized by that.

The invention of claim 9
On the computer,
Geomagnetic detection function to detect geomagnetism,
Inclination detection function that detects the inclination from the horizontal,
An azimuth measurement function for performing azimuth measurement based on a detection result by the geomagnetic detection function and a detection result by the tilt detection function;
A vibration discriminating function for discriminating whether or not the computer has vibration;
When it is determined that there is vibration by the vibration determination function, a control function for performing azimuth measurement that excludes the detection result by the tilt detection function;
Is realized.

  According to the present invention, it is possible to improve the accuracy of azimuth measurement even when vibration is generated.

The circuit block diagram which showed the structure of the mobile telephone apparatus 1 of this invention. Detailed configuration diagram of the application information storage unit 11 of FIG. The figure which showed the arrangement | positioning relationship of the vibrator 13, the alerting | reporting speaker 14, and the 6-axis sensor 15 of FIG. The flowchart figure which shows the whole operation | movement of the mobile telephone apparatus 1 of FIG. The flowchart figure which similarly shows the whole operation | movement of the mobile telephone apparatus 1. FIG. FIG. 4 and FIG. 5 are detailed flowcharts of the orientation measurement processing (first embodiment). FIG. 4 and FIG. 5 are detailed flowcharts of the azimuth measurement processing (modified example of the first embodiment). FIG. 4 and FIG. 5 are detailed flowcharts of the azimuth measurement processing (second embodiment).

  Embodiments of the present invention will be described below with reference to the drawings. However, although various technically preferable limitations for implementing the present invention are given to the embodiments described below, the scope of the invention is not limited to the following embodiments and illustrated examples.

<First Embodiment>
FIG. 1 is a circuit block diagram of a mobile phone device 1 which is an example of an electronic apparatus of the present invention. In the figure, a central control unit (CPU) 2 controls the overall operation of the cellular phone device 1 according to various programs stored in a program storage unit 3. That is, the program storage unit 3 is provided with a ROM (not shown) in which a program for executing flowcharts shown in FIGS. 4 to 6 to be described later and an application program for executing various applications are stored. The central control unit 2 controls the overall operation of the cellular phone device 1 based on the program stored in the ROM.

  The radio communication unit (transmission / reception unit) 4 demodulates the radio signal of audio captured from the antenna 5 into a reception baseband signal when operating as a telephone call function, and then receives audio from the reception speaker 7 via the audio signal processing unit 6. Output. Also, the audio signal input from the transmission microphone 8 is processed by the audio signal processing unit 6 and then sent to the radio communication unit 4. The radio communication unit 4 encodes the audio signal into a transmission baseband signal, and then the antenna 5. To send out.

  Further, during the operation of the e-mail function, the Internet connection function, etc., it is possible to send / receive e-mails and browse websites via the antenna 5 and the wireless communication unit 4. It is sent to the display unit 9 and displayed.

  The display unit 9 is composed of, for example, a dot matrix type liquid crystal display device or an EL display device, and displays information necessary for the telephone device (information such as the other party's telephone number, radio wave reception state, remaining battery level, etc.) As described above, the contents of the e-mail and website are displayed. As will be described later, the direction measured by the direction measuring function is also displayed on the display unit 9.

  The operation unit 10 is an operation key provided in the cellular phone device 1, and although not shown in detail, a power on / off key, a numerical character input key for inputting numerical information and character information, and various functions (applications) ) Various application keys for selecting start and end (including compass keys for instructing start and stop of the compass function), so that an incoming call notification that is normally performed by a report sound is performed by vibration of a vibrator described later. A manner mode key to be set in the phone, an on-hook key for calling, an off-hook key, and the like.

The application information storage unit 11 stores information related to various applications. For example, as illustrated in FIG. 2, the application information storage unit 11 stores address book information (such as a number of names, addresses, and telephone numbers) of the address book function. Address book information storage section 11A, mail information storage section 11B for storing mail function transmission / reception mail information, Internet function website URL
A storage area such as a Web information storage unit 11C for storing information and the like is provided.

  The application information storage unit 11 also stores information for controlling each application. As shown in FIG. 2, the application information storage unit 11 is normally “0”, and there is an incoming call to notify the user of the incoming call. Notification flag storage unit 11D in which flag information “1” is set at the time, manner mode flag storage unit 11E in which “1” is set when notification such as notification of the incoming call is performed by vibration of the vibrator, incoming call notification An on-call flag storage unit 11F is provided in which “1” is set when an off-hook key operation is performed to enable a call.

  Further, the application information storage unit 11 includes a direction meter operation flag storage unit 11G in which “1” is set during operation of the direction meter function and a direction storage that stores the measured direction as a direction unit related storage unit. Part 11H is also provided.

  Returning to FIG. 1, the time measuring unit 12 counts a reference signal and obtains current date and time information such as the current year, date, day of the week, hour and minute, and an alarm time and the like are set. When the time information matches the alarm time information, an alarm time circuit unit (not shown) for notifying that the alarm time has been reached by an alarm sound or the like is constituted.

  As shown in FIG. 3, the vibrator 13 is a motor 13 </ b> B in which a weight (not shown) is attached to the rotating shaft 13 </ b> A. The vibrator 13 is attached to a circuit board 16 inside a device case (not shown) of the mobile phone device 1. The device case of the mobile phone device 1 is vibrated through the circuit board 16 by the rotation.

  The notification speaker 14 shown in FIG. 1 informs the user of an incoming call by a loud sound notification sound, and also reproduces and reports music at a high sound volume other than when the incoming call is received, for example, when the music playback function is operating. Is. The notification speaker 14 is also attached to the circuit board 16 as shown in FIG.

The 6-axis sensor 15 shown in FIG. 1 includes a 3-axis geomagnetic sensor and accelerations in the 3-axis (X-axis (vertical), Y-axis (horizontal), and Z-axis (vertical)) directions. It consists of a triaxial acceleration sensor that can measure the magnitude of vibration, and this triaxial acceleration sensor functions as a tilt sensor that detects the tilt (posture) of the mobile phone device 1 here.

  For example, as shown in FIG. 3, the six-axis sensor 15 is provided between the motor 13 </ b> B of the circuit board 16 and the notification speaker 14. That is, as shown in FIG. 3, when vibration is generated by rotating the rotating shaft 13 </ b> A of the vibrator 13 (motor 13 </ b> B) in the direction of arrow A, the vibration is transmitted to the 6-axis sensor 15 via the circuit board 16. It has been.

  In this case, the circuit board 16 vibrates in the arrow Y-axis direction (lateral direction) and arrow Z-axis direction (vertical direction) by the rotation of the vibrator 13 (motor 13B), so the 6-axis sensor 15 is driven by the vibrator 13 (motor 13B). Vibrations in the axial (lateral) direction and the Z-axis (vertical) direction are detected, which adversely affects the measurement of the inclination of the mobile phone device 1.

  Similarly, the alarm speaker 14 attached to the circuit board 16 is also provided at a position where the alarm vibration is transmitted to the six-axis sensor 15. Therefore, when a notification sound is generated from the notification speaker 14, the vertical vibration due to the notification sound is transmitted to the six-axis sensor 15, and the six-axis sensor 15 detects the vibration in the Z-axis (vertical) direction by the notification speaker 14. Therefore, the measurement of the inclination of the mobile phone device 1 is adversely affected.

  Returning to FIG. 1, the power supply unit 17 includes a rechargeable secondary battery (not shown) and a backup battery that backs up each circuit unit when the battery voltage of the secondary battery decreases. A driving voltage is supplied to the.

  The operation of the mobile phone device 1 configured as described above will be described with reference to the flowcharts of FIGS.

  4, in step S1, it is determined whether or not the power on key of the operation unit 10 has been operated in the power off state. If it is detected that the power on key has been operated, the process proceeds to step S2, and various initialization processes are performed. Done. In step S3, a standby process is performed to set the mobile phone device 1 in a state in which a call can be received.

  After the standby process is completed in step S3, the process proceeds to step S4, and it is determined whether or not the notification flag of the notification flag storage unit 11D in FIG. 2 is set to “1”.

  At this time, because the notification flag is not set to “1” by the initial setting performed in step S2, the process proceeds to step S5, and the busy flag storage unit 11G in FIG. 2 is set to “1”. It is determined whether or not. At this time, since the in-call flag is not set to “1” by the initial setting performed in step S2, the process proceeds to step S6 in FIG. 5 to determine (detect) the presence or absence of an incoming call.

If an incoming call is detected, the process proceeds to step S7. If no incoming call is detected, the process proceeds to step S8 to detect whether the user has operated the operation unit 10.
When it is detected that there is an operation by the user, the process proceeds to step S9, and it is determined whether or not the operation on the operation unit 10 is an operation on the direction meter key. The compass key is a key (toggle operation specification key) that starts the compass (azimuth measurement) function by the first key operation and stops the compass function by the second operation.

  When the operation of the compass key is detected in step S9, the process proceeds to step S10, and it is determined whether or not the compass flag in the compass flag storage unit 11H of FIG. 2 is “0”.

  As described above, the compass flag is a flag that is set to “1” during the operation of the compass function. When the power is turned on, the compass flag is set to “0” by the initial setting performed in step S2. In step S11, the compass flag is set to "1", and initial setting for starting the compass operation is performed in the next step S12.

  As a result, as will be described later in the flowchart, based on the detection result of the triaxial geomagnetic sensor included in the six axis sensor 15, the detection result of the triaxial acceleration sensor is appropriately referred to, and the central control unit 2 calculates the azimuth. The measured azimuth is stored in the azimuth storage unit 11H in FIG. 2 and the azimuth is displayed on the display unit 9.

  On the other hand, if the compass flag is not “0” in step S10, it is determined that the compass key has already been operated in the compass operation state in which the compass flag is “1”, and the process proceeds to step S13. It is set to “0”, and the direction measurement stop processing is performed in the next step S14.

In step S9, if the operation of the compass key is not detected, the process proceeds to step S15, and it is detected whether or not the operation is the power-off key.
Here, if it is detected that the operation is the power-off key, the process proceeds to the next S16, power-off processing is performed, and the operation flow ends.

  If it is detected in step S15 that the power-off key is not operated, it is determined that the other key is operated, and the process proceeds to step S17, and processing corresponding to the other key is performed.

  For example, when the power is turned on, the processing corresponding to the other keys is set so that the notification of the incoming call is performed by the notification sound by the notification speaker 14 by the initial setting performed in step S2, but the above step S15: If it is determined that the manner mode key has been operated in NO, in step S17, a manner mode flag (not shown) in the application information storage unit 11 is set to “1”. Thereby, at the time of an incoming call, the incoming call notification by the vibrator 13 is made as will be described later.

  Further, the input of the telephone number for making a call, the data entry of the address book, the detection of the key input for creating the mail text in the mail function, etc. are all made in the above step S15: NO, and the processing according to the key input is performed. This is performed in step S17.

  On the other hand, when it is detected in step S8 that the user has not operated the operation unit 10, the process proceeds to step S18 to determine whether or not the direction meter flag in the direction meter flag storage unit 11H is “1”. If the compass flag is “1”, the process proceeds to step S19 to perform a compass measurement process. If the compass flag is “0”, the process returns to the standby process in step S3 of FIG.

  That is, when it is detected that the compass key is operated in step S9, and the compass flag is set to “1” in step S11, the compass measurement process is performed in step S19 and the measurement is performed on the display unit 9 thereafter. The direction is displayed. The details of the azimuth measurement process in step S19 will be described later.

  When an incoming call is detected in step S6, the process proceeds to step S7 where the notification flag in the notification flag storage unit 11D of FIG. 2 is set to “1”, and in the next step S20, the notification mode at that time is set. It is determined whether or not the manner mode is set. When the manner mode is set (when the manner mode flag = 1), the process proceeds to step S21 to start vibration processing by the vibrator 13, and then returns to step S4 in FIG.

  On the other hand, if it is determined in step S20 that the manner mode is not set (manner mode flag = 0), in step S22, the sound notification by the incoming notification speaker 14 is started, and thereafter, step S4 in FIG. Return to.

  That is, when an incoming call is detected in step S6, the in-report flag is set to “1”, and depending on whether the manner mode is set at that time, either the vibrator 13 or the incoming call notification speaker 14 is set. The incoming call notification by either one is started, and the process returns to step S4 in FIG.

  In this way, when the process returns to step S4 after the incoming call is detected, in step S4, the in-call flag is set to “1” and the incoming call notification is performed by either the vibrator 13 or the incoming call notification speaker 14. (Notifying flag = 1) is detected, and the process proceeds to the next step S23.

  In step S23, it is determined whether or not the compass flag is set to “1”, that is, whether or not the compass function is in operation. If the compass function is in operation, the process proceeds to step S24 and is in operation. If not, the process proceeds directly to step S25.

  The above step S24 is the same process as the azimuth measurement process of step S19 of FIG. 5, and details thereof will be described later. Then, the process proceeds to next Step S25.

  Step S25 is a process for determining whether or not the off-hook key of the operation unit 10 has been operated. If it is detected that the off-hook key has been operated, the process proceeds to step S26 and subsequent steps. If NO is detected, the process proceeds to step S27 to determine whether or not the incoming call termination process has been performed.

  The process of terminating the incoming call is, for example, a process of detecting that the user has operated the incoming call rejection key to reject the incoming call or that a predetermined time has elapsed since the incoming call. When the operation of the incoming call rejection key or the elapse of a predetermined time is detected, the process proceeds to step S28. Otherwise, the process returns from step S27 to step S4.

  That is, during the incoming call notification, when the compass function is in operation, the above steps S4, S23, S24, S25 and S27 are performed unless the off-hook key operation detection in step S25 or the incoming call end detection in step S27 is performed. This process is repeated, and the direction during incoming call notification is measured in step S24.

  When the operation of the off-hook key is detected in step S25, the notification flag is set to “0” in the next step S26, and the notification of the incoming call by the vibrator 13 or the incoming notification speaker 14 is stopped in the next step S29. Process.

  In the next step S30, the process sets the busy flag in the busy flag storage unit 11F of FIG. 2 to “1” and performs a process of starting a call with the other party who has called in the next step S31. Return to S4.

  On the other hand, if the end of the incoming call is detected in step S27, the process proceeds to step S28, the notification flag is set to “0” as in step S26, and the incoming call notification is stopped in the next step S32 as in step S29. After performing the process to return to step S4.

  In step S25, the operation of the off-hook key is detected, and the process proceeds to step S26 and subsequent steps. In step S30, the busy flag is set to "1" and the call is started in step S31. Thereafter, the call is performed in step S5. Since it is detected that the middle flag is “1”, the process proceeds to step S33 to perform call processing. In the next step S34, it is determined whether or not the compass flag is “1”, that is, the compass function is operating. It is determined whether or not there is.

  If it is determined in step S34 that the compass function is not operating, the process proceeds to step S36 to detect whether or not the on-hook key has been operated. However, if the compass function is operating (compass flag = 1). Advances from step S34 to step S35, performs a process of measuring the azimuth, and advances to step S36.

  That is, when an off-hook key operation is performed after an incoming call and a call is started, steps S4, S5, S33, S34, S35 and S36 are repeatedly executed until an on-hook key operation is detected in step S36. Therefore, the direction is measured in step S35 even during a call.

  When an on-hook key operation is detected in step S36, the busy flag is returned to "0" in step S37, a call stop process is performed in the next step S38, and the process returns to the standby process in step S3.

FIG. 6 shows details of the azimuth measurement processing in steps S19, S24 and S35. In the figure, first, in step B1, it is determined whether or not the mobile phone device 1 is vibrating.
Specifically, it can be easily determined by determining whether or not the reporting flag in the reporting flag storage unit 11D is 1 in step B1.

If it is determined in step B1 that there is vibration, the process proceeds to step B2.
If it is determined that there is vibration, the tilt detection value of the acceleration sensor (tilt sensor) function provided in the 6-axis sensor is not stable. Therefore, in step B2, azimuth measurement is performed using only the 3-axis geomagnetic sensor. The stored azimuth is stored in the azimuth storage unit 11H, and the measured azimuth is displayed in step B3.

On the other hand, if it is determined in step B1 that there is no vibration, the process proceeds to step B4.
In this case, since the inclination detection value by the acceleration sensor (inclination sensor) is stable, in step B4, the direction measurement processing (direction measurement in consideration of the inclination) using the geomagnetic sensor and the acceleration sensor (inclination sensor) is performed. The measured azimuth is stored in the azimuth storage unit 11H, and similarly, the measured azimuth is displayed in step B3.

  In step S35 and step S19, the processing step of step B1 is provided, for example, when the incoming time is not being notified and the current time reaches the alarm time during azimuth measurement and the vibrator 13 or the incoming notification speaker. This is because the direction cannot be accurately measured due to vibration when the notification by 14 is made, and thus the direction is correctly measured in the same manner as during the incoming call notification.

  Thus, according to the above-described embodiment, when the azimuth is detected by the 6-axis sensor 15, vibration due to other factors such as the vibrator 13 or the incoming call notification speaker 14 is used to notify the incoming call. 15, since the direction measurement is performed by eliminating (ignoring) the tilt (posture) information affected by the vibration by the vibrator 13 or the incoming call notification speaker 14, the vibration is generated or not generated. Accurate azimuth measurement can be performed without erroneous measurement.

<Modification of First Embodiment>
FIG. 7 is a diagram for explaining a modification of the first embodiment. Since the azimuth measurement process of FIG. 7 is different from the first embodiment, only that part will be described.

In FIG. 7, as in the first embodiment, first, in step C1, it is determined whether or not the mobile phone device 1 is vibrating.
Specifically, it can be easily determined by determining whether or not the reporting flag in the reporting flag storage unit 11D is 1 in step C1.

If it is determined in step C1 that there is vibration, the process proceeds to step C2 to determine whether or not the manner mode is set.
Specifically, it can be easily determined by determining whether or not the manner mode flag in the manner mode flag storage unit 11E is 1 in step C2.

If it is determined in step C2 that the manner mode is selected, the process proceeds to step C3.
In this case, since vibration is generated by the vibrator 13, the detected tilt value by the acceleration sensor (tilt sensor) function of the six-axis sensor has an adverse effect on the Y-axis direction and the Z-axis direction, which are the vibration directions of the vibrator 13. receive. (See Figure 2.)

  Therefore, in step C3, based on the detection value of the geomagnetic sensor, the azimuth measurement process is performed using the detection value in which two axes (Y axis and Z axis) are excluded (ignored) from the detection value of the acceleration sensor (tilt sensor). The measured azimuth is stored in the azimuth storage unit 11H, and the measured azimuth is displayed in step C4.

On the other hand, if it is determined in step C2 that the manner mode is not set, the process proceeds to step C5.
In this case, since vibration is generated by the incoming notification speaker 14, the tilt detection value of the acceleration sensor (tilt sensor) function of the six-axis sensor is adversely affected with respect to the Z-axis direction that is the vibration direction of the vibrator. . (See Figure 2.)

  Therefore, in step C5, based on the detection value of the geomagnetic sensor, the azimuth measurement process is performed using the detection value in which one axis (Z axis) is excluded (ignored) among the detection values of the acceleration sensor (tilt sensor). The measured azimuth is stored in the azimuth storage unit 11H, and similarly, the measured azimuth is displayed in step C4.

If it is determined in step C1 that there is no vibration, the process proceeds to step C6.
In this case, since vibration does not occur, the detected tilt value of the acceleration sensor (tilt sensor) function included in the six-axis sensor is not adversely affected.

  Therefore, in step C6, the azimuth measurement process is performed using the detection value of the geomagnetic sensor and the detection value of the tilt sensor, and the measured azimuth is stored in the azimuth storage unit 11H, and is similarly measured in step C4. Display the direction.

  Here, although the case of the arrangement of FIG. 2 has been described, it is needless to say that the direction to be excluded is appropriately determined depending on the arrangement state of the 6-axis sensor 15, the incoming call notification speaker 14, and the vibrator 13.

  As described above, according to the modification of the first embodiment described above, other factors such as the vibrator 13 or the incoming call notification speaker 14 are used to notify the incoming call when the azimuth is detected by the 6-axis sensor 15. Even if the vibration due to is applied to the 6-axis sensor 15, only the vibration in the affected direction is excluded (ignored) from the vibration caused by the vibrator 13 or the incoming notification speaker 14, and the direction measurement is performed. Since azimuth | direction measurement which considered inclination information can be performed using the detected value of the axis | shaft which does not correspond to a vibration direction, the precision of azimuth | direction measurement can be improved.

<Second Embodiment>
FIG. 8 is a diagram for explaining the second embodiment. Since the portion of the azimuth measurement processing of FIG. 6 is different from that of the first embodiment, only that portion will be described.

In FIG. 8, first, in step D1, it is determined whether or not the mobile phone device 1 is scheduled to vibrate.
Specifically, it can be easily determined by determining whether or not the reporting flag in the reporting flag storage unit 11D is 1 in step D1.

If it is determined in step D1 that there is vibration, the process proceeds to step D2, and the operation of the acceleration sensor (tilt sensor) is stopped.
Then, in the next step D3, azimuth measurement using only the three-axis geomagnetic sensor is performed, the measured azimuth is stored in the azimuth storage unit 11H, and the measured azimuth display is performed in step D4.

  That is, since the vibration generated by the mobile phone device 1 can be detected before the vibration is generated, the detection value detected by the acceleration sensor (inclination sensor) at the time of azimuth measurement is not ignored, but the detection of the inclination information is detected. The device itself is stopped, and the azimuth measurement is performed using only the detection value of the geomagnetism by the geomagnetic sensor.

On the other hand, if it is determined in step D1 that there is no planned vibration, the process proceeds to step D5.
In this case, since the inclination detection value by the acceleration sensor (inclination sensor) is stable, in step D5, an azimuth measurement process using the geomagnetic sensor and the acceleration sensor (azimuth measurement in consideration of the inclination detected by the acceleration sensor) is performed. The measured azimuth is stored in the azimuth storage unit 11H, and similarly, the measured azimuth is displayed in step D4.

  As described above, in the second embodiment, among the functions of the six-axis sensor 15, the function of the three-axis acceleration sensor (tilt sensor) affected by vibration is not measured (measurement itself is stopped), It is possible to prevent waste of power consumption.

  Further, in each of the above embodiments, when there is no vibration, it is possible to determine whether the vibration is generated or stopped by referring to various flags. Therefore, it is determined that the vibration is stopped or stopped. In such a case, the azimuth measurement can be resumed immediately based on the detection result by the geomagnetic sensor and the inclination information by the acceleration sensor (inclination sensor).

  In each of the above embodiments, an example of a six-axis sensor in which a geomagnetic sensor and an acceleration sensor (tilt sensor) are integrated has been described. However, even in a configuration in which the geomagnetic sensor and the acceleration sensor are provided separately. It is clear that it is good.

  Moreover, as long as it can determine inclination information (attitude information), it may not be an acceleration sensor. For example, an inclination sensor using a weight (ball) that can determine a static state may be used.

When an acceleration sensor is used as the tilt sensor, the acceleration sensor can be used for another application called step count measurement, in addition to improving the accuracy of azimuth measurement.
In that case, vibration determination at the time of azimuth measurement may be performed by an acceleration sensor.

  In each of the above embodiments, the example in which the 6-axis sensor 15, the incoming call notification speaker 14 and the vibrator 13 are arranged on the same circuit board 16 has been described, but they are arranged on different positions rather than on the same board. Even in this case, the present invention can be applied if the vibration of the incoming call notification speaker 14 or the vibrator 13 affects the six-axis sensor 15.

  In each of the above embodiments, the example in which the present invention is applied to the mobile phone device 1 has been described. However, the present invention can be applied to any electronic device such as a digital camera, a personal computer, a music player, and a PDA. It is.

DESCRIPTION OF SYMBOLS 1 Mobile telephone apparatus 2 Central control part 3 Program memory | storage part 4 Radio | wireless communication part 5 Antenna 6 Audio | voice signal processing part 7 Earpiece speaker 8 Transmission microphone 9 Display part 10 Operation part 11 Application information storage part 12 Timekeeping part 13 Vibrator 14 For notification of incoming calls Speaker 15 6-axis sensor (3-axis geomagnetic sensor + 3-axis acceleration (tilt) sensor)

Claims (9)

A geomagnetism detecting means for detecting geomagnetism, an inclination detecting means for detecting an inclination from the horizontal, and an orientation measuring means for measuring an orientation based on a detection result by the geomagnetism detecting means and a detection result by the inclination detecting means. Electronic equipment,
Vibration discriminating means for discriminating whether or not the electronic device has vibration;
Control means for performing azimuth measurement by the azimuth measurement means that excludes the detection result by the inclination detection means when it is determined that there is vibration by the vibration determination means;
An electronic device comprising: The control means includes
When it is determined that there is vibration by the vibration determination unit, the direction measurement excluding the detection result by the inclination detection unit is performed.
The electronic device according to claim 1. The control means includes
When it is determined that there is vibration by the vibration determination means, the detection itself by the inclination detection means is stopped.
The electronic device according to claim 1. The control means includes
When it is determined that there is no vibration by the vibration determination means, together with the detection result by the geomagnetism detection means, the direction measurement based on the detection result by the inclination detection means is performed.
The electronic device according to claim 1. The vibration discriminating means includes
Including stop determination means for determining whether or not vibration is eliminated,
The control means includes
When it is determined by the vibration determination means that there is no vibration, the direction measurement based on the detection result by the inclination detection means is resumed together with the detection result by the geomagnetism detection means,
The electronic device according to claim 1. The apparatus further comprises vibration generating means for generating vibration in the electronic device,
The vibration determining means includes direction determining means for determining a vibration direction by the vibration generating means,
The control means includes
When the vibration discriminating means determines that there is vibration, the inclination detecting means excludes the vibration in the direction matching the vibration direction by the vibration generating means and detects the inclination, and the azimuth measurement by the azimuth measuring means To do,
The electronic device according to claim 1. The tilt detection means is an acceleration detection means for detecting acceleration.
The electronic device according to claim 1. Communication means for communication;
An incoming call notification means for notifying that there has been an incoming call to the communication means;
Further comprising
The vibration generating means is a speaker or vibrator as the incoming call notification means.
The electronic device according to claim 1. On the computer,
Geomagnetic detection function to detect geomagnetism,
Inclination detection function that detects the inclination from the horizontal,
An azimuth measurement function for performing azimuth measurement based on a detection result by the geomagnetic detection function and a detection result by the tilt detection function;
A vibration discriminating function for discriminating whether or not the computer has vibration;
When it is determined that there is vibration by the vibration determination function, a control function for performing azimuth measurement that excludes the detection result by the tilt detection function;
A program to realize

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