KR101383537B1 - Method and image transition apparatus for determining whether transits an image of a mobile terminal or not - Google Patents

Abstract

According to an embodiment, there is provided a method of determining whether a mobile terminal in a horizontal state is switched on a screen; detecting a first magnetic field value of the mobile terminal; Detecting a second magnetic field value of the mobile terminal when movement of the mobile terminal occurs; Calculating a rotation angle of the mobile terminal using the detected first magnetic field value and the second magnetic field value; And executing a screen switching event of the mobile terminal according to the calculated rotation angle of the mobile terminal.

Description

METHOD AND IMAGE TRANSITION APPARATUS FOR DETERMINING WHETHER TRANSITS AN IMAGE OF A MOBILE TERMINAL OR NOT}

The present invention relates to a method for determining whether to switch the screen of the mobile terminal in a horizontal state and a screen switching device for determining whether to switch the screen of the mobile terminal.

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The background technology of the present invention is disclosed in the following two patent documents.
(1) Korean Unexamined Patent Publication 2011-0113247 (2011.10.17)
(2) Korean Unexamined Patent Publication 2011-0115346 (2011.10.21)
Recently, portable electronic devices that automatically rotate (or switch) screens for the convenience of users are increasing. Such portable electronic devices switch the screen based on the inclination between the portable electronic device and the ground when the rotation of the screen is detected.
Therefore, when the portable electronic device is placed on a flat surface according to a user's usage pattern, or when the tilt between the portable electronic device and the ground is not enough to switch the screen, it is difficult to determine the direction of one axis. There is a problem that can not rotate the screen because the slope of the hardly exist.

According to an exemplary embodiment of the present invention, even when the mobile terminal and the ground are in a horizontal state where the inclination is smaller than the inclination threshold, the screen may be rotated (or switched) by grasping the angle of the screen viewed by the user.

One embodiment of the present invention can provide a screen switching method and apparatus of a mobile terminal that can be used together without affecting the existing automatic screen switching function using the slope of the mobile terminal and the ground.

According to an embodiment of the present disclosure, a method of determining whether a mobile terminal is switched to a screen includes detecting a first magnetic field value of the mobile terminal; Detecting a second magnetic field value of the mobile terminal when movement of the mobile terminal occurs; Calculating a rotation angle of the mobile terminal using the detected first magnetic field value and the second magnetic field value; And executing a screen switching event of the mobile terminal according to the calculated rotation angle of the mobile terminal.

The method may include determining that the mobile terminal is in the horizontal state based on whether the inclination of the mobile terminal with the ground is smaller than a preset inclination threshold.

The method may further include determining whether the mobile terminal is in a stationary state by using a result value measured by a gyro sensor.

The detecting of the second magnetic field value of the mobile terminal may be a step of detecting the second magnetic field value of the mobile terminal by determining whether the mobile terminal is moving based on a result value measured by a gyro sensor. .

The determining of the mobile terminal being in a horizontal state may include determining whether the mobile terminal maintains the horizontal state for a preset time.

The method may further include storing a second magnetic field value of the mobile terminal according to whether the mobile terminal maintains the horizontal state and the fixed state for a preset time.

The calculating of the screen rotation angle of the mobile terminal may include comparing the first magnetic field value and the second magnetic field value; And determining the screen rotation angle of the mobile terminal based on the comparison result.

According to an embodiment of the present disclosure, a method of determining whether a mobile terminal is switched to a screen includes determining whether the mobile terminal is in a horizontal state based on an inclination of the mobile terminal with the ground; Selecting one of a first screen switching algorithm using a gyro sensor and a second screen switching algorithm using a magnetic field sensor based on the determination result; And executing a screen change event by using a selected one of the first screen change algorithm and the second screen change algorithm.

The horizontal state may be a state in which the inclination of the mobile terminal with the ground is smaller than a preset inclination threshold.

The selecting of the one may select the first screen switching algorithm when the mobile terminal is not in the horizontal state, and select the second screen switching algorithm when the mobile terminal is in the horizontal state.

According to an embodiment, there is provided a screen switching apparatus configured to determine whether a screen is switched between a mobile terminal, the detection unit detecting a first magnetic field value of the mobile terminal and detecting a second magnetic field value of the mobile terminal when a movement of the mobile terminal occurs; A calculator configured to calculate a rotation angle of the mobile terminal by using the detected first magnetic field value and the second magnetic field value; And an execution unit that executes a screen switching event of the mobile terminal according to the calculated rotation angle of the mobile terminal.

The mobile terminal may further include a first determining unit determining whether the mobile terminal is in the horizontal state based on whether the inclination of the mobile terminal with the ground is smaller than a preset inclination threshold.

The apparatus may further include a second determiner configured to determine whether the mobile terminal is in a fixed state by using a result value measured by a gyro sensor.

The apparatus may further include a memory configured to store a second magnetic field of the detected mobile terminal according to whether the mobile terminal determined based on a result measured by a gyro sensor is moving.

The first determiner may determine whether the mobile terminal maintains a horizontal state for a preset time.

The memory may store a second magnetic field value of the mobile terminal according to whether the mobile terminal maintains a horizontal state and a fixed state for a preset time.

The calculating unit includes comparing means for comparing the first magnetic field value and the second magnetic field value; And determining means for determining a screen rotation angle of the mobile terminal based on the comparison result.

According to an embodiment, there is provided a screen switching apparatus for determining whether a mobile terminal is switched. A determination unit determines whether the mobile terminal is in a horizontal state based on an inclination of the mobile terminal with the ground; A selection unit for selecting one of a first screen switching algorithm using a gyro sensor and a second screen switching algorithm using a magnetic field sensor based on the determination result; And an execution unit that executes a screen change event using an algorithm selected from the first screen change algorithm and the second screen change algorithm.

The selector may select the first screen switching algorithm when the mobile terminal is not in the horizontal state, and select the second screen switching algorithm when the mobile terminal is in the horizontal state.

According to an embodiment, the inclination of the mobile terminal with the ground by recognizing whether the mobile terminal is in a horizontal state by using an acceleration sensor and a gyro sensor included in the mobile terminal, and by recognizing the east, west, north and south directions of the mobile terminal using a magnetic field sensor. Even if is small or the mobile terminal is placed on the plane, the screen switching event according to the rotation angle can be executed.

According to an embodiment, by selecting a screen switching algorithm based on the inclination of the mobile terminal with the ground, it is possible to provide a screen switching method of the mobile terminal that can be used in combination with the existing screen switching method.

According to an embodiment of the present disclosure, the screen switching method of the mobile terminal may be utilized in various fields by replacing the screen switching event with various events such as a volume control event or a next song play or a previous song play.

FIG. 1 is a diagram illustrating various forms in which a screen is switched in a mobile terminal having a fixed horizontal state by a method of determining whether to switch a screen of a mobile terminal according to an exemplary embodiment.
2 is a flowchart illustrating a method of determining whether to switch a screen of a mobile terminal according to an exemplary embodiment.
3 is a diagram for describing a method of measuring a tilt threshold in a method of determining whether a screen is switched by a mobile terminal according to an exemplary embodiment.
4 is a diagram illustrating screen switching performed in a fixed horizontal state by a method of determining whether to switch a screen of a mobile terminal according to an exemplary embodiment.
5 is a flowchart illustrating a method of determining whether to switch a screen of a mobile terminal according to another exemplary embodiment.
FIG. 6 is a diagram illustrating screen switching performed at a position where a slight slope exists by a method of determining whether to switch a screen of a mobile terminal according to another exemplary embodiment.
7 is a flowchart illustrating a method of determining whether to switch a screen of a mobile terminal according to another embodiment.
8 is a block diagram of a screen switching apparatus for determining whether to switch a screen of a mobile terminal according to an exemplary embodiment.
9 is a block diagram of a screen switching apparatus for determining whether to switch a screen of a mobile terminal according to another exemplary embodiment.
10 is a diagram illustrating screen switching when a character is input by a method of determining whether to switch a screen of a mobile terminal according to an exemplary embodiment.
FIG. 11 is a diagram illustrating screen switching when volume control is performed during music playback by a method of determining whether to switch screens of a mobile terminal according to an exemplary embodiment.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to or limited by the embodiments. In addition, the same reference numerals shown in the drawings denote the same members.

FIG. 1 is a diagram illustrating various forms in which a screen is switched in a mobile terminal having a fixed horizontal state by a method of determining whether to switch a screen of a mobile terminal according to an exemplary embodiment. Referring to FIG. 1, it can be seen that a screen change event is executed when the user rotates the mobile terminal left or right.

In one embodiment, after positioning the mobile terminal in a fixed horizontal state, the mobile terminal is stored in the horizontal state by recognizing that the mobile terminal is in the horizontal state through the value measured by the sensor (s) for a predetermined time interval, and then storing the first east, west, north, and south directions of the mobile terminal. do. Thereafter, the mobile terminal determines the point of the final movement through the value measured by the sensor (s) during a predetermined time interval. Accordingly, the mobile terminal can rotate the screen 90 degrees to the left or right, or 180 degrees to the left or right, respectively. Here, the 'horizontal state' is not limited to the case where the angle between the mobile terminal and the ground is exactly 0 degrees. That is, the "horizontal state" used herein may mean a substantially horizontal state. For example, when the angle between the mobile terminal and the ground is smaller than a preset threshold, the mobile terminal may be understood to be in a 'horizontal state'.

In this case, the left and right rotations are recognized only when the angle with respect to the direction at the last moving point relative to the first east, west, south, and north directions stored in the mobile terminal is recognized to execute the screen switching event.

2 is a flowchart illustrating a method of determining whether to switch a screen of a mobile terminal according to an exemplary embodiment. Referring to FIG. 2, a method of switching a screen of a mobile terminal when the mobile terminal is placed in a horizontal state may be described.

The screen switching device (hereinafter, referred to as a “switching device”) that determines whether to switch the screen of the mobile terminal according to an embodiment determines that the mobile terminal is in a horizontal state based on the inclination of the mobile terminal with the ground (S210).

In operation S210, the switching device may determine whether the mobile terminal is in a horizontal state by determining whether the inclination of the mobile terminal with the ground is smaller than a preset inclination threshold. In this case, prior to S210, the switching device may determine whether the mobile terminal maintains a fixed state by using a result value measured by a gyro sensor included in the mobile terminal. That is, it may be determined whether the mobile terminal is in a horizontal state after maintaining a fixed state for a predetermined time.

If it is determined in S210 that the mobile terminal is not in the horizontal state, the switching device may terminate the operation or may repeat the process of S210 until the mobile terminal is in the horizontal state. Here, the horizontal state refers to a state in which the inclination between the mobile terminal and the ground is within a range smaller than the inclination threshold from a state of 0 degrees.

If it is determined in S210 that the mobile terminal is in a horizontal state, the switching device detects a first magnetic field value that is the initial direction value of the mobile terminal (S220). In this case, the first magnetic field value may be used as a reference point of automatic screen switching according to the left, right, south, and south directions of the mobile terminal. The first magnetic field value may be measured by a magnetic field sensor, for example a geomagnetic sensor or the like. In this case, the switching device may store the detected first magnetic field value.

The switching device may determine whether there is motion in the mobile terminal (S230). In operation 230, the switching device may determine whether the mobile terminal is initially moved by using a result value measured by a gyro sensor included in the mobile terminal.

If it is determined in step S230 that there is no movement, the switching device may store the first magnetic field value. On the other hand, if it is determined in step S230 that the movement, the switching device may determine whether the mobile terminal is in a stationary state by using the result value measured by the gyro sensor (S240). Here, the fixed state means a state in which there is no further movement after the movement of the mobile terminal ends. If it is determined in S240 that the mobile terminal is still moving, the switching device may go to S230 to continuously determine whether to move.

On the other hand, if it is determined in S240 that the mobile terminal is in a fixed state, the switching device detects the second magnetic field value measured at the final position after the movement (S250). Here, determining whether the mobile terminal is in a fixed state is to measure a direction value (that is, a second magnetic field value) in a state where the movement of the mobile terminal stops and there is no further change. In this case, the switching device may store the detected second magnetic field value.

The switching device calculates the screen rotation angle of the mobile terminal using the first magnetic field value and the second magnetic field value (S260). That is, the switching device may compare the first magnetic field value, which is the initial direction value, and the second magnetic field value, which is the current direction value, and determine the screen rotation angles of the left, right, 90, and 180 degrees of the mobile terminal based on the comparison result.

A detailed method of calculating the screen rotation angle of the mobile terminal by the switching device in S260 is as follows.

For example, the initial x measurement value of the orientation sensor included in the mobile terminal is X, and the x measurement value of the magnetic field sensor after the rotation (or movement) of the mobile terminal is X '. In addition, let Y be the switching determination value for switching the screen in the left or right direction determined from the measured value of the magnetic field sensor.

Herein, when X> X ', the switching determination value Y = X-X', and when X <X ', the switching determination value Y = (360 + X)-X'.

In this case, the switching device may execute the screen switching event in the following manner according to the switching determination value (Y).

The switching device maintains the current screen state if the transition determination value Y is close to 0 degrees or 360 degrees, and determines the screen rotation angle to 90 degrees if the transition determination value Y is close to 90 degrees. Or right) by 90 degrees. Also, the switching device rotates the screen 180 degrees to the left (or right) if the switching determination value Y is close to 180 degrees, and rotates 90 degrees to the right if the switching determination value Y is close to 270 degrees. Can be converted).

The switching device executes the screen switching event of the mobile terminal according to the screen rotation angle of the mobile terminal calculated in S260 (S270). For example, the switching device may execute a screen switching event of the mobile terminal when the calculated screen rotation angle of the mobile terminal is larger than a preset threshold.

3 is a diagram for describing a method of measuring an inclination threshold for automatically changing a screen direction in a method of determining whether a screen is switched by a mobile terminal according to an exemplary embodiment.

The tilt threshold, which is a tilt range for automatically changing the screen orientation, can be obtained by measuring minimum values of x, y, and z of an accelerometer sensor.

Once the mobile terminal in a fixed state without screen switching is positioned in a state where there is no slope with the ground, the tilt angle may be gradually increased to measure the Z angle at the time when the first screen switching is performed. In this case, the Z angle may be a tilt threshold which is a tilt range for automatically changing the screen direction.

4 is a diagram illustrating screen switching performed in a fixed horizontal state by a method of determining whether to switch a screen of a mobile terminal according to an exemplary embodiment.

Referring to FIG. 4, it can be seen that a user places a mobile terminal on a flat surface of a desk floor and executes an image. At this time, according to the method of determining whether the screen switching of the mobile terminal according to an embodiment, the vertical screen is automatically rotated to the full screen horizontally only by rotating the mobile terminal in a certain direction on a flat surface without raising the mobile terminal Can be switched. Therefore, the user can conveniently watch the image through the entire screen.

5 is a flowchart illustrating a method of determining whether to switch a screen of a mobile terminal according to another exemplary embodiment. Referring to FIG. 5, when there is no movement of the mobile terminal and the slope between the mobile terminal and the ground is smaller than the inclination threshold for automatically changing the screen direction, the mobile terminal switches the screen according to the position of the mobile terminal. You can see how to determine if the screen is switched.

The switching device recognizes the value of the acceleration sensor and recognizes whether the current mobile terminal is inclined with the ground in an allowable range (S510). That is, it is determined whether the inclination of the mobile terminal is in the horizontal state. The inclination of the mobile terminal may be temporarily smaller than the inclination threshold according to the movement. Therefore, in an exemplary embodiment, it is possible to designate a preset time (for example, t time) to determine whether the mobile terminal maintains a horizontal state in which the inclination with the ground is smaller than the inclination threshold.

For example, when the x and y values of the acceleration sensor converge to 0 and the z value converges to 9.8, the switching device may know that the mobile terminal is in a horizontal state. It can be seen that the state is fixed. If, in S510, the value of the acceleration sensor is not maintained within a range smaller than the slope threshold for t time, the switching device may repeat the process of S510 until the value of the acceleration sensor is maintained for t time.

The switching device may then detect the value of the gyro sensor to confirm that the mobile terminal is currently stationary without movement. This may be confirmed by whether the state where the x, y, z values of the gyro sensor remain at 0 is maintained for t time (S520). If the value of the gyro sensor is not maintained for t time in S520, the switching device may perform the process of S510.

If the value of the gyro sensor is maintained for t time in S520, the switching device stores the x value (that is, the first magnetic field value) of the magnetic field sensor (S530). The reason for storing the x value (ie, the first magnetic field value) of the magnetic field sensor is to store the first east, west, north, and south directions of the mobile terminal in a fixed state. The x value (ie, the first magnetic field value) of the magnetic field sensor may be used as a reference point of automatic screen switching according to left and right rotation of the mobile terminal.

The switching device then checks whether the x, y, z values of the gyro sensor remain 0 (S540). This is a process for determining whether the mobile terminal is moving. When the x, y, and z values of the gyro sensor deviate from 0, it can be seen that the mobile terminal is rotating in the left or right direction due to the user's intention. . If the x, y, z values of the gyro sensor are maintained at 0 in S540, the switching device may repeat the process of S540 until a movement occurs in the mobile terminal.

On the other hand, when the x, y, z value of the gyro sensor is out of 0 in S540 due to the movement of the mobile terminal, the switching device determines whether the change of the x value of the magnetic field sensor starts and the x, y, z value of the acceleration sensor. It may be checked whether or not the state remains smaller than the slope threshold for the time t (S550). At this time, if the x, y, z value of the acceleration sensor exceeds the inclination threshold, the switching device to go to S510 to use the existing automatic screen switching technology. This is to use the existing automatic screen switching technology and the screen switching method of the mobile terminal according to an embodiment to change the screen in the direction intended by the user at any inclination.

While the x value of the magnetic field sensor in S550 is changed, if the value of the acceleration sensor remains smaller than the slope threshold for t time, the switching device maintains the measured x, y, z value of the gyro sensor as 0 for t time. It is possible to determine whether or not there is a change in the x value of the magnetic field sensor (S560). Here, the switching device may recognize that the movement of the physical direction change to the left or the right intended by the user is finished by whether the measured x, y, and z values of the gyro sensor persist to zero for t hours. At this time, if it is determined that there is no further movement in the mobile terminal, the switching device may measure the x value (second magnetic field value) of the magnetic field sensor at the final current position.

If the measured x, y, z values of the gyro sensor do not last at 0 for t hours in S560, the switching device performs the process of S550.

Thereafter, the switching device may calculate the screen rotation angle by comparing the x value of the magnetic field sensor at the current position with the x value of the previously stored magnetic field sensor (S570). That is, the switching device may recognize how many degrees the direction in which the mobile terminal finally rotated moves to the left or right direction compared to the initial direction. Here, the method of calculating the screen rotation angle by the switching device will be described with reference to S260 of FIG. 2.

The switching device may achieve a screen switching according to the user's intention by executing a screen switching event according to a left, right, or 90, 180 degree rotation according to the screen rotation angle.

After the screen switching is executed, the switching device may go to S540 to check that the fixed state of the mobile terminal is maintained, and then repeatedly perform the screen switching operation.

FIG. 6 is a diagram illustrating screen switching performed at a position where a slight slope exists by a method of determining whether to switch a screen of a mobile terminal according to another exemplary embodiment.

According to an embodiment, as shown in FIG. 6, when the user places the mobile terminal over a keyboard (with a slight inclination to the ground) and executes an image, the user does not have to set the mobile terminal above a tilt threshold. You will see the image automatically switch to full screen. As such, in one embodiment, the screen may be switched even at an angle at which the conventional automatic screen switching is impossible. In addition, an embodiment may be equally applicable to a case in which the mobile terminal is shaken for a predetermined time, such as when the user is lying down or looking at the mobile terminal. When there is a slight shaking, such as when a user is lying down or holding a mobile terminal in his hand, the switching device obtains an average value of the sensor value (s), and when the obtained average value is an angle equal to or less than a tilt threshold, moves as in an embodiment. The screen of the terminal may be switched.

7 is a flowchart illustrating a method of determining whether to switch a screen of a mobile terminal according to another embodiment. In FIG. 7, a method of using a conventional automatic screen switching method and a method of determining whether to switch a screen of a mobile terminal according to an embodiment will be described based on an inclination of the mobile terminal with the ground.

The switching device determines whether the mobile terminal is in a horizontal state based on the inclination of the mobile terminal with the ground (S710). Here, the horizontal state means that the inclination of the mobile terminal with the ground is in a range from 0 to an angle smaller than the preset inclination threshold.

Based on the determination result of S710, the switching device may select one of a first screen switching algorithm using a gyro sensor and a second screen switching algorithm using a magnetic field sensor. Here, the first screen switching algorithm may correspond to a conventional automatic screen switching method, and the second screen switching algorithm may correspond to a method for determining whether to switch the screen of the mobile terminal described with reference to FIG. 2 or 5.

More specifically, the switching device may select the first screen switching algorithm when the mobile terminal is not in a horizontal state (ie, when the tilt of the mobile terminal is greater than or equal to the tilt threshold) (S720). However, when the mobile terminal is in a horizontal state (ie, when the slope of the mobile terminal is smaller than the tilt threshold), the switching device may select the second screen switching algorithm (S730).

The switching device executes a screen switching event by using an algorithm selected from the first screen switching algorithm and the second screen switching algorithm (S740).

8 is a block diagram of a screen switching apparatus for determining whether to switch a screen of a mobile terminal according to an exemplary embodiment.

Referring to FIG. 8, the screen switching apparatus 800 for determining whether to switch a screen of a mobile terminal according to an embodiment includes a first determiner 810, a second determiner 820, a detector 830, and a memory ( 840, a calculator 850, and an execution unit 860.

The first determination unit 810 determines that the mobile terminal is in a horizontal state based on the inclination of the mobile terminal with the ground. In this case, the first determination unit 810 may determine whether the inclination of the mobile terminal with the ground is smaller than a preset inclination threshold.

The first determination unit 810 may determine whether the inclination of the mobile terminal with the ground is smaller than the inclination threshold, which is an inclination range for automatically changing the screen direction. In this case, the first determination unit 810 may determine whether the mobile terminal maintains a horizontal state for a preset time by using an accelerometer included in the mobile terminal. In addition, the first determiner 810 may determine whether the inclination of the mobile terminal with the ground maintains a point outside the inclination threshold during the movement of the mobile terminal. For example, when the X and Y values of the acceleration sensor converge to 0 and the Z values converge to 9.8, the mobile terminal may determine that the mobile terminal is in a horizontal (fixed) state.

The second determiner 820 may determine whether the mobile terminal is in a fixed state by using a result value measured by a gyro sensor. Here, the fixed state means a state in which there is no movement of the mobile terminal, that is, a state in which the movement of the mobile terminal is not detected through a gyro sensor or the like.

The second determiner 820 may determine whether to maintain a fixed state by using a result value measured by a gyro sensor included in the mobile terminal. In addition, the second determiner 820 may recognize whether the movement of the mobile terminal is terminated based on the result value measured by the gyro sensor included in the mobile terminal.

The detection unit 830 detects the first magnetic field value, which is the first direction of the mobile terminal, and the second magnetic field value of the mobile terminal, which is changed according to whether the movement occurs when the movement of the mobile terminal occurs, using a magnetic field sensor.

The memory 840 may store the first magnetic field value of the mobile terminal and the second magnetic field value changed according to the movement of the mobile terminal according to the determination result of the first determination unit 810. In this case, the memory 840 may store the second magnetic field value of the mobile terminal according to whether the mobile terminal maintains the horizontal state and the fixed state for a preset time.

Here, the first magnetic field value is for storing the first east, west, south, and north directions of the mobile terminal, and may be used as a reference point of automatic screen switching according to left and right rotation of the mobile terminal.

The calculator 850 calculates a screen rotation angle of the mobile terminal using the first magnetic field value and the second magnetic field value. The calculator 850 may include a comparison unit 853 and a determination unit 856.

The comparing means 853 may compare the first magnetic field value and the second magnetic field value.

The determining means 856 may determine the screen rotation angle to the left or the right of the mobile terminal based on the comparison result in the comparing means 853.

The execution unit 860 executes a screen switching event of the mobile terminal based on the screen rotation angle of the mobile terminal.

9 is a block diagram of a screen switching apparatus for determining whether to switch a screen of a mobile terminal according to another exemplary embodiment.

According to another exemplary embodiment, a screen switching device for determining whether to switch a screen of a mobile terminal may include a tilt threshold detector 910, a first motion detector 920, a stop state detector 930, and a second motion detector 940. And a screen switching execution unit 950.

The inclination threshold detection unit 910 detects that the mobile terminal is located in a range where the inclination with the ground is not applied to the conventional screen switching, that is, a point out of the inclination threshold. The inclination threshold detector 910 may measure the inclination between the mobile terminal and the ground using x, y, and z values measured by an accelerometer sensor.

That is, the inclination threshold detection unit 910 may detect whether the inclination between the mobile terminal and the ground is within a range smaller than the inclination threshold (the inclination range in a state close to horizontal which is not included in the conventional automatic screen switching range). have. In this case, the tilt threshold may be measured by the method of FIG. 3 described above.

The acceleration sensor may continuously measure the tilt of the mobile terminal and inform the first motion detector 920 whether the range below the threshold is maintained.

The first motion detector 920 determines whether the current position of the mobile terminal is in a fixed state without movement through a value measured by a gyro sensor. That is, the first motion detector 920 determines that the x, y, and z values of the gyro sensor are maintained at '0' for a predetermined time so that the user is in a stable state where the user is holding the mobile terminal by hand or the mobile terminal is not moving. You can see that it lies.

 The screen switching device checks the current state of the mobile terminal through the first motion detector 920 and stores the x value (first magnetic field value) of the magnetic field sensor (orientation sensor) which is the current orientation value. At this time, the x value measured by the magnetic field sensor (orientation sensor) is the initial direction value in a state where there is no movement of the terminal and becomes a reference value according to the screen change later.

The stationary state detector 930 recognizes that the user's intended movement has started from the time when the x, y, and z values of the gyro sensor deviate from '0'.

The second motion detector 940 may use a result value measured by an orientation sensor, an accelerometer sensor, and a gyro sensor included in the mobile terminal.

The second motion detector 940 may measure the east, west, north and south directions of the mobile terminal through the x value measured by the magnetic field sensor. In addition, the second motion detector 940 detects whether the inclination between the mobile terminal and the ground is included in the range below the inclination threshold, that is, the point out of the inclination threshold while the x value of the magnetic field sensor is changed through the acceleration sensor. can do. If the inclination between the mobile terminal and the ground exceeds the inclination threshold, the conventional automatic screen switching function may be operated.

If the slope is less than the slope threshold, the second motion detector 940 determines that the x, y, z values of the gyro sensor are maintained at 0 for a predetermined time, indicating that the movement in the direction intended by the user is finished. Detect. In this case, the second motion detector 940 may determine whether the x value of the magnetic field sensor is changed and measure the x value (second magnetic field value) of the changed magnetic field sensor.

The screen switching execution unit 950 compares the changed x value of the magnetic field sensor with the previously stored x value of the magnetic field sensor, and determines the screen switching angles such as 90 degrees, 180 degrees, etc. which are required by the mobile terminal. A screen change event can be executed.

FIG. 10 is a diagram illustrating screen switching when a character is input by a method of determining whether to switch a screen of a mobile terminal according to an exemplary embodiment.

The method of determining whether to switch the screen of the mobile terminal according to the above-described exemplary embodiment may be equally applicable to text input as shown in FIG. 10.

When a user places a mobile terminal on a desk and inputs text, the user may automatically switch the keyboard displayed on the screen to a QWERTY keyboard by simply rotating the screen on a plane without setting the mobile terminal at an angle greater than a tilt threshold. Accordingly, the user may perform keyboard input in the mobile terminal more conveniently.

11 is a diagram illustrating screen switching when volume control is performed during music playback by a method of determining whether a mobile terminal is switched to a screen according to an exemplary embodiment.

According to the method of determining whether to switch the screen of the mobile terminal according to an embodiment, when the user places the mobile terminal in a position close to the ground, such as a desk, floor, etc., the initial x value of the magnetic field sensor (orientation) is stored; Volume can be controlled according to left and right rotation.

In FIG. 11, when the mobile terminal is rotated to the left as shown by reference numeral 1130 as a reference point, the sound may be muted. In addition, when the mobile terminal is rotated to the right as shown in 1150, the volume can be controlled to be the maximum. At this time, more detailed volume control can be implemented with the following algorithm modifications.

For example, the second motion detector 940 of FIG. 9 minimizes the t value, and the screen switching execution unit 950 is modified to adjust the x value of the magnetic field sensor by 30 degrees, 60 degrees rather than 90 degrees or 180 degrees. More precise volume control is possible by implementing control in units such as 90 degrees.

The screen switching method of the mobile terminal according to an embodiment may be utilized in various fields by replacing the screen switching event with an event such as a volume control event or a next song play or a previous song play. In addition, the screen switching method of the mobile terminal according to an embodiment is used in various fields such as the volume control of the alarm or wake-up call of the mobile terminal, the ring or vibration control when receiving a call, and the screen direction control of the mobile terminal when driving the game. Can be.

The above-described methods may be implemented in the form of program instructions that can be executed through various computer means and recorded on a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions recorded on the medium may be those specially designed and constructed for the present invention or may be available to those skilled in the art of computer software. Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape; optical media such as CD-ROMs and DVDs; magnetic media such as floppy disks; Magneto-optical media, and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code such as those produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. This is possible.

Therefore, the scope of the present invention should not be construed as being limited to the embodiments described, but should be determined by equivalents to the appended claims, as well as the appended claims.

810: First determination unit
820: second determination unit
830:
840: memory
850: output unit
860: execution unit

Claims (20)

delete delete delete delete delete delete delete Determining whether the mobile terminal is in a horizontal state based on an inclination of the mobile terminal with the ground;
Selecting one of a first screen switching algorithm using a gyro sensor and a second screen switching algorithm using a magnetic field sensor based on the determination result; And
Executing a screen switching event using a selected one of the first screen switching algorithm and the second screen switching algorithm.
Method for determining whether to switch the screen of the mobile terminal comprising a. 9. The method of claim 8,
The horizontal state is
And determining whether the mobile terminal changes screens when the inclination of the mobile terminal with the ground is smaller than a preset inclination threshold. 9. The method of claim 8,
The step of selecting any one
If the mobile terminal is not in the horizontal state, select the first screen switching algorithm,
If the mobile terminal is in a horizontal state, determining whether the mobile terminal selects the second screen switching algorithm. A computer-readable recording medium having recorded thereon a program for performing the method of any one of claims 8 to 10. delete delete delete delete delete delete delete A determination unit that determines whether the mobile terminal is in a horizontal state based on the inclination of the mobile terminal with the ground;
A selection unit for selecting one of a first screen switching algorithm using a gyro sensor and a second screen switching algorithm using a magnetic field sensor based on the determination result; And
An execution unit that executes a screen change event using an algorithm selected from the first screen change algorithm and the second screen change algorithm
Screen switching device for determining whether to switch the screen of the mobile terminal comprising a. 20. The method of claim 19,
The selection unit
If the mobile terminal is not in the horizontal state, select the first screen switching algorithm,
And determining whether to switch the screen of the mobile terminal selecting the second screen switching algorithm when the mobile terminal is in a horizontal state.

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