JP5045835B1 - Electronics - Google Patents

Abstract

The present invention relates to an electronic device that uses an angular velocity sensor to read a book, display an image, play music or a moving image, etc., even in a usage environment where acceleration or angular velocity due to vibration exists, with one hand. The purpose is to operate well.
To achieve this object, an electronic device 10 of the present invention includes a housing 12 having a display unit 11, an angular velocity sensor 13 for detecting an angular velocity around the X axis parallel to the display unit 11, and an angular velocity. And a control unit 15 that performs the first process or the second process based on the sensor 13, and the control unit 15 performs the first operation when the angular velocity sensor 13 detects a negative angular velocity after detecting the positive angular velocity. When the angular velocity sensor 13 detects a negative angular velocity and then detects a positive angular velocity, the second processing is performed.
[Selection] Figure 1

Description

  The present invention relates to an electronic device that uses an angular velocity sensor to browse a book, display an image, play music or a moving image, and the like.

  A conventional electronic device of this type will be described with reference to the drawings.

  FIG. 7 is an external view showing the external appearance of a conventional electronic device 1. In FIG. 7, the electronic device 1 is connected to the right main body 2 and the left main body 3 by the opening / closing operation so that the right main body 2 and the left main body 3 can be opened and closed by the open / close shaft 4. Books, images, etc. were displayed on the left LCD 6. In addition, an acceleration / angular velocity sensor 7 for detecting acceleration and angular velocity is provided, and the opening / closing angles of the right main body 2 and the left main body 3 are detected using the acceleration or angular velocity. Further, the page turning / page returning process is performed by determining the direction in which the acceleration during opening and closing is large.

  As prior art document information relating to the invention of this application, for example, Patent Document 1 is known.

JP 2009-217415 A

  In recent years, portable electronic devices such as mobile phones, electronic books, and tablet terminals that browse books, display images, and play music or moving images have increased. Such portable electronic devices are required to be able to be operated with high accuracy with one hand in usage environments where there is acceleration or angular velocity due to vibration, such as walking with a heel or holding on a train strap. It is done.

  Conventional electronic devices perform page turning / page returning processing based on the opening / closing angle and acceleration, and therefore cannot be accurately operated with one hand in a usage environment in which acceleration or angular velocity due to vibration exists. .

  Therefore, the electronic apparatus according to the present invention includes a housing having a display unit, an angular velocity sensor that detects an angular velocity around the X axis parallel to the display unit, and a first process or a second process based on the angular velocity sensor. A control unit that performs the first processing when the angular velocity sensor detects a negative angular velocity after the angular velocity sensor detects a positive angular velocity, and the angular velocity sensor detects a negative angular velocity. After that, the second process is performed when a positive angular velocity is detected.

  With this configuration, different processing can be performed according to the generation order of the angular velocity in the positive direction and the angular velocity in the negative direction that occurs when the housing is rotated, so there is an acceleration or angular velocity that is caused by vibration. In an environment, it can be accurately operated with one hand.

Explanatory drawing of the electronic device in Embodiment 1 Output waveform diagram of angular velocity sensor and acceleration sensor in embodiment 1 Processing flow diagram in Embodiment 1 Processing flow diagram in Embodiment 1 Output waveform diagram of angular velocity sensor and acceleration sensor in embodiment 2 Output waveform diagram of angular velocity sensor and acceleration sensor in Embodiment 3 Illustration of a conventional electronic device

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is an explanatory diagram of an electronic device 10 according to the first embodiment. In FIG. 1, the electronic device 10 includes a housing 12 having a display unit 11, an angular velocity sensor 13 that detects an angular velocity around the X axis parallel to the display unit 11, and a first process or a first process based on the angular velocity sensor 13. And a control unit 15 that performs the second process. After the angular velocity sensor 13 detects an angular velocity 16 that is positive (clockwise as viewed from the user having the electronic device 10), the control unit 15 is negative (counterclockwise as viewed from the user who has the electronic device 10). The first processing is performed when the angular velocity 17 is detected, and the second processing is performed when the positive angular velocity 16 is detected after the angular velocity sensor 13 detects the negative angular velocity 17.

  With this configuration, different processing can be performed depending on the generation order of the angular velocity 16 in the positive direction and the angular velocity 17 in the negative direction that are generated when the housing 12 is rotated. In the existing usage environment, it can be accurately operated with one hand.

  The electronic device 10 includes an acceleration sensor 14 that detects acceleration in the Y-axis direction. The control unit 15 performs the first process when the acceleration sensor 14 detects the positive acceleration in the Y axis and the angular velocity sensor 13 detects the negative angular velocity after detecting the positive angular velocity, and performs the first process. The second process is performed when the positive angular velocity is detected after the angular velocity sensor 13 detects the negative angular velocity after 14 detects the negative acceleration of the Y axis. By controlling in this way, the accuracy of operation can be further improved.

  Specific examples of the electronic device 10 include portable electronic devices such as a mobile phone, an electronic book, and a tablet terminal that browse books, display images, and play music or moving images.

  In the case where the electronic device 10 has a function of browsing a book, for example, the first process is a process of page-turning the book, and the second process is a process of page-backing the book. In addition, when the cover of the book is displayed, the first process may be a process of displaying the next book, and the second process may be a process of displaying the previous book.

  When the electronic device 10 has a function of displaying an image, for example, the first process is a process of displaying the next image, and the second process is a process of displaying the previous image. In addition, for example, when only a part of the image is displayed, the first process is a process of displaying the image of the right part that is not displayed, and the second process is the process of the left part that is not displayed. It may be a process of displaying an image.

  When the electronic device 10 has a function of reproducing music or a moving image, the first process is a process of reproducing the next music or moving image, and the second process is a process of reproducing the previous music or moving image. . In addition, for example, the first process may be a fast-forwarding process, and the second process may be a rewinding process.

  Hereinafter, the control using the angular velocity sensor 13 and the acceleration sensor 14 will be specifically described.

  FIG. 2 shows the results of experiments using the angular velocity sensor 13 and the acceleration sensor 14. 2, the output of the angular velocity sensor 13 and the output of the acceleration sensor 14 for each axis corresponding to the X axis, the Y axis, and the Z axis in FIG. 1 are shown.

  In FIG. 2A, the horizontal axis is time (time advances from right to left), and the vertical axis is angular velocity. Angular velocity 18 is an angular velocity around the X axis, angular velocity 19 is an angular velocity around the Y axis, and angular velocity 20 is an angular velocity around the Z axis.

  In the first operation, the housing 12 is held in the right hand so that the display unit 11 faces upward (the positive direction of the Z axis), rotated in the positive direction (clockwise) with respect to the X axis, and then negative It is an output of the angular velocity sensor 13 when the operation of rotating in the direction (counterclockwise) and returning to the original position is performed. As shown in the drawing, the first operation was performed three times at times t1, t2, and t3, and waveforms 18a, 18b, and 18c were obtained, respectively.

  In the second operation, the housing 12 is held in the right hand so that the display unit 11 faces upward (the positive direction of the Z axis), is rotated in the negative direction (counterclockwise) with respect to the X axis, and then positive It is the output of the angular velocity sensor 13 when the operation of rotating in the direction (clockwise) and returning to the original position is performed. As shown in the figure, the second operation was performed three times at times t4, t5, and t6, and waveforms 18d, 18e, and 18f were obtained, respectively.

  As shown in FIG. 2A, in the first operation, a positive angular velocity is detected first, and then a negative angular velocity is detected. In the second operation, a negative angular velocity is detected first, and then a positive angular velocity is detected. This is because when the electronic device 10 having the display unit 11 is operated, in order to view a book or the like, an operation to return the display unit 11 to the top again is always performed at the end.

  Here, it is also possible to perform a predetermined process using only the angular velocity when rotated in one positive or negative direction. That is, the first process can be performed when an angular velocity in the positive direction is detected, and the second process can be performed when an angular velocity in the negative direction is detected. However, when the electronic device 10 is used while walking with a heel or being held by a train strap, the angular velocity caused by walking or vibration of the train is erroneously recognized, and the first processing or the second processing is performed. May be executed.

  However, as shown in FIG. 2, when the user deliberately operates, the display unit 11 is always accompanied by an operation of returning the display unit 11 to the upper side. A malfunction caused by a train can be prevented.

  That is, when the angular velocity sensor 13 detects a negative angular velocity after the angular velocity sensor 13 detects a positive angular velocity, the control unit 15 determines that the first operation is intentionally performed by the user, and performs the first process. . When the angular velocity sensor 13 detects a positive angular velocity after detecting a negative angular velocity, it is determined that the user has intentionally performed the second operation, and the second process is performed. By doing in this way, it can prevent malfunctioning by the angular velocity resulting from a walk or the vibration of a train, and it can operate with one hand accurately.

  The control unit 15 provides a predetermined threshold, and when the absolute value of the angular velocity is the threshold, it is determined that the angular velocity is detected, thereby further reducing the influence of the angular velocity due to walking or train vibration. be able to.

  In FIG. 2B, the horizontal axis is time (time advances from right to left), and the vertical axis is acceleration. The acceleration 21 is acceleration in the X-axis direction, the acceleration 22 is acceleration in the Y-axis direction, and the acceleration 23 is acceleration in the Z-axis direction. Note that FIGS. 2A and 2B have the same time on the horizontal axis.

  Here, focusing on the acceleration 22 in the Y-axis direction, waveforms 22a, 22b, and 22c indicating acceleration in the positive direction are obtained at times t1, t2, and t3 when the first operation is performed. In addition, waveforms 22d, 22e, and 22f indicating acceleration in the negative direction are obtained at times t4, t5, and t6 when the second operation is performed.

  This is because when the user performs the first movement, it is very difficult to perform only the rotation operation while keeping the casing 12 in the same position, and the casing 12 is moved in the positive direction of the Y axis. It is because it moves. Similarly, when the second operation is performed, the housing 12 is moved in the negative direction of the Y axis.

  By utilizing such human movement characteristics, it is possible to perform a more accurate operation with one hand. Specifically, when the acceleration sensor 14 detects the acceleration in the positive direction of the Y axis and the angular velocity sensor 13 detects the negative angular velocity after detecting the positive angular velocity, the control unit 15 detects the negative angular velocity. It is determined that the first operation is intentionally performed, and the first process is performed. Further, when the acceleration sensor 14 detects the negative acceleration of the Y-axis and the angular velocity sensor 13 detects the negative angular velocity and then detects the positive angular velocity, the user intentionally performs the second operation. It is determined that it has been performed, and the second process is performed. Such control makes it possible to distinguish between the first motion and the second motion using acceleration and to distinguish between the first motion and the second motion based on the angular velocity, thus further preventing malfunction. In addition, highly accurate operations can be performed with one hand.

  FIG. 3 shows a process flow when the control unit 15 performs the first process or the second process based on the angular velocity sensor 13. As shown in FIG. 3, control starts in step S1, and a positive or negative angular velocity around the X axis is detected in step S2. If a positive or negative angular velocity around the X axis is not detected, the process returns to the start point SP to detect the angular velocity again.

  If a positive angular velocity is detected in step S2, the process proceeds to step S3, and it is determined whether a negative angular velocity around the X axis is detected within a predetermined time. If a negative angular velocity around the X axis is detected within a predetermined time, the process proceeds to step S4, the first process is executed, and the process returns to the start point SP. If a negative angular velocity around the X axis is not detected within a predetermined time, the process returns to the start point SP without performing processing.

  If a negative angular velocity is detected in step S2, the process proceeds to step S5 to determine whether a positive angular velocity around the X axis is detected within a predetermined time. If a positive angular velocity around the X axis is detected within a predetermined time, the process proceeds to step S6, the second process is executed, and the process returns to the start point SP. If a positive angular velocity around the X axis is not detected within a predetermined time, the process returns to the start point SP without performing processing.

  FIG. 4 shows a processing flow when the control unit 15 performs the first process or the second process based on the angular velocity sensor 13 and the acceleration sensor 14. As shown in FIG. 4, control starts in step S10, and positive or negative acceleration is detected in step S11. If no acceleration is detected, the process returns to the start point SP to detect the acceleration again.

  If a positive acceleration is detected in step S11, the process proceeds to step S12 to determine whether a positive angular velocity around the X axis is detected. If a positive angular velocity around the X axis is not detected, the process returns to the start point SP, and if it is detected, the process proceeds to step S13.

  In step S13, it is determined whether a negative angular velocity around the X axis is detected within a predetermined time. If a negative angular velocity is detected within a predetermined time, the process proceeds to step S14, the first process is executed, and the process returns to the start point SP. If a negative angular velocity is not detected within a predetermined time, the process returns to the start point SP without performing processing.

  If negative acceleration is detected in step S11, the process proceeds to step S15 to determine whether or not a negative angular velocity around the X axis is detected. When the negative angular velocity around the X axis is not detected, the process returns to the start point SP, and when it is detected, the process proceeds to step S16.

  In step S16, it is determined whether or not a positive angular velocity around the X axis is detected within a predetermined time. If a positive angular velocity is detected within the predetermined time, the process proceeds to step S17, the second process is executed, and the process returns to the start point SP. If a positive angular velocity is not detected within a predetermined time, the process returns to the start point SP without performing processing.

  The predetermined time in FIG. 3 or FIG. 4 is suitable for completing a series of operations until the user rotates the electronic device 10 in the positive or negative direction and then rotates it in the opposite direction again to return it to the original position. Set the correct time. Preferably, by setting the predetermined time to 0.1 seconds or more, it is possible to prevent malfunction due to disturbance such as an impact not intended by the user. Preferably, by setting the predetermined time within 2 seconds, the first or second operation for the first time and the first or second operation for the second time can be distinguished.

  Note that the predetermined time in step S3 of FIG. 3 may be different from the predetermined time in step S5. Similarly, the predetermined time in step S13 of FIG. 4 may be different from the predetermined time in step S16. Thereby, the operational feelings of the first operation and the second operation can be made different.

  Note that the predetermined time in FIG. 3 or 4 may be settable by the user. Thereby, since each user can adjust individually the time interval by which 1st operation | movement or 2nd operation | movement is recognized, operation without a sense of incongruity is realizable.

  In the present embodiment, the operation of the user rotating the electronic device 10 in the lateral direction (the operation of rotating around the X axis in FIG. 1) has been described as the first operation or the second operation. However, the operation of rotating the electronic device 10 in the vertical direction (the operation of rotating around the Y axis in FIG. 1) is the first operation or the second operation, and control is performed so as to perform the first process or the second process. May be.

  2, 5, and 6, a positive value is output when the angular velocity is positive (clockwise as viewed from the user having the electronic device 10), and negative (user having the electronic device 10). A negative value is output in the case of an angular velocity counterclockwise as viewed from. However, since the polarity of the output signal of the angular velocity sensor 13 is appropriately set, a negative value may be output in the case of a positive angular velocity, and a positive value may be output in the case of a negative angular velocity. Similarly, a positive value is output in the case of a positive acceleration, and a negative value is output in the case of a negative acceleration, but the polarity of the output signal of the acceleration sensor 14 is appropriately set. A negative value may be output in the case of positive acceleration, and a positive value may be output in the case of negative acceleration.

(Embodiment 2)
In the present embodiment, control using acceleration in the Z-axis direction will be described. In addition, the same code | symbol is attached | subjected to the same structure as Embodiment 1, and description is abbreviate | omitted.

  FIG. 5 shows the results of a comparative experiment in which the housing 12 is held with the right hand and the left hand. FIG. 5A is the same as FIG. 2 and shows the angular velocity and acceleration when the first operation and the second operation are performed with the housing 12 held with the right hand. FIG. 5B shows angular velocities and accelerations when the first operation and the second operation are performed with the housing 12 held with the left hand.

  As can be seen from FIGS. 5 (a) and 5 (b), whether the hand is held with the right hand or the left hand, the positive / negative order of occurrence of the angular velocity 18 around the X axis, and the acceleration in the Y axis direction. The direction of occurrence of 22 is the same. That is, the angular velocity 18 around the X axis is detected in the first operation after detecting the positive angular velocity in the first operation, and the negative angular velocity in the second operation. A positive angular velocity is detected after detection. The acceleration 22 in the Y-axis direction is detected by detecting a positive acceleration in the first operation and detecting a negative acceleration in the second operation regardless of the hand. Yes.

  However, it has been found that the acceleration 23 in the Z-axis direction has different waveforms when held with the right hand and when held with the left hand. That is, when held with the right hand, the acceleration in the Z-axis direction in the first motion only slightly decreased, but in the second motion, the acceleration in the Z-axis direction significantly decreased. On the other hand, when it is held with the left hand, the acceleration in the Z-axis direction in the first movement is greatly reduced in the negative direction, but in the second movement, the acceleration in the Z-axis direction is slightly in the negative direction. It only decreased.

  This is considered to be because the amount of rotation differs depending on whether the user holds the housing 12 and turns it outside the body or turns it inside.

  In the initial state where the display unit 11 faces the upper surface, the Z-axis direction of the electronic device 10 and the gravity direction coincide with each other, so that the gravitational acceleration is maximized. As the angle around the X axis is rotated from this state, the angle between the Z axis direction of the electronic device 10 and the direction of gravity increases, so the acceleration in the Z axis direction detected by the acceleration sensor 14 decreases.

  Here, when the user rotates the casing 12 to the outside of the body (the first movement when holding it with the right hand, the second movement when holding it with the left hand), the amount of rotation depends on the structure of the arm. Therefore, the angle formed between the Z-axis direction and the gravity direction of the electronic device 10 is small, and the acceleration in the Z-axis direction is only slightly reduced. On the other hand, when the user rotates the housing 12 to the inside of the body (second movement when holding with the right hand, first movement when holding with the left hand) Compared with the amount of rotation, the angle between the Z-axis direction of the electronic device 10 and the direction of gravity is increased, and the acceleration in the Z-axis direction is greatly reduced.

  As described above, using the difference in acceleration in the Z-axis direction due to the arm structure, the control unit 15 can determine whether the operation is performed with the right hand or the left hand.

  That is, the first motion or the second motion is detected using the angular velocity 18 around the X axis or the acceleration 22 around the X axis in the Y axis direction, and in the case of the first motion, the acceleration in the Z axis direction is detected. Can be determined to be an operation with the left hand when it is below a predetermined threshold, and can be determined to be an operation with the right hand when it is not below the predetermined threshold.

  Similarly, in the case of the second motion, when the acceleration in the Z-axis direction falls below a predetermined threshold, it is determined that the operation is performed with the right hand, and when the acceleration is not less than the predetermined threshold, it is determined that the operation is performed with the left hand. can do.

  In particular, when the electronic device 10 has a game function, the operation of the game can be made different by determining whether the operation is performed with the right hand or the left hand. For example, in the case of a game of baseball or golf, it is possible to determine the user's dominant hand by an operation with the right hand or an operation with the left hand, and to perform a batting operation or a pitching operation according to the user's dominant hand.

(Embodiment 3)
In the present embodiment, another control using acceleration in the Z-axis direction will be described. In addition, the same code | symbol is attached | subjected to the same structure as Embodiment 1, and description is abbreviate | omitted.

  FIG. 6 is a result of a comparison experiment between the case where the casing 12 is held in the right hand and the case 12 is returned too much in the first operation and the second operation.

  In the first operation, a rotation 25 is performed in the clockwise direction from the start position 24, an operation 26 for returning to the original position is performed, and an operation 28 for returning to the original state after performing an excessive return 27 is performed. The waveforms of the angular velocity 18 around the X axis corresponding to this operation are indicated by 24-28, respectively.

  In the second operation, an operation 31 is performed in which the rotation 30 is performed counterclockwise from the start position 29 to return it to the original position. The waveforms of the angular velocity 18 around the X axis corresponding to this operation are indicated by 29 to 31, respectively.

  Here, the waveform from the undoing operation 26 to the undoing operation 28 in the first operation and the waveform from the starting position 29 to the undoing operation 31 in the second operation are almost the same. It is very difficult to do. For this reason, even though the user is performing the first operation, the control unit 15 may misrecognize that the operation is the second operation, and may perform the second process.

  However, by using the acceleration 23 in the Z-axis direction, it is possible to discriminate between the case of returning too much in the first operation and the second operation.

  As can be seen from FIG. 6, in the acceleration 23 in the Z-axis direction, the waveform 32 in the first operation is only slightly decreased, but the waveform 33 in the second operation is greatly decreased.

  This is because, as described in the second embodiment, the amount of rotation differs depending on whether the user holds the housing 12 and turns it outside the body or turns it inside. In the state where the housing 12 is held with the right hand, the first motion is a motion to turn outside the body, so the acceleration in the Z-axis direction is only slightly reduced. In the case of the second motion, Therefore, the acceleration in the Z-axis direction is greatly reduced.

  Therefore, even when a positive angular velocity is detected after a negative angular velocity is detected, the control unit 15 performs the first operation if the acceleration 23 in the Z-axis direction does not fall below a predetermined threshold. Therefore, the second operation can be prevented from being performed. By this control, it is possible to prevent malfunction due to excessive return and to perform operation with high accuracy with one hand.

  The electronic device according to the present invention can be operated with high accuracy with one hand in an environment where acceleration or angular velocity due to vibration exists, so that the electronic device performs book browsing, image display, music or video playback, etc. Useful as.

DESCRIPTION OF SYMBOLS 10 Electronic device 11 Display part 12 Case 13 Angular velocity sensor 14 Acceleration sensor 15 Control part 16 Positive angular velocity 17 Negative angular velocity 18 Angular velocity around X-axis 19 Angular velocity around Y-axis 20 Angular velocity around Z-axis 21 Acceleration in X-axis direction 22 Acceleration in the Y-axis direction 23 Acceleration in the Z-axis direction 24 Start position 25 Rotate in the clockwise direction 26 Undo operation 27 Excessive return 28 Undo operation 29 Start position 30 Rotate counterclockwise 31 Undo operation 32 Acceleration waveform in the Z-axis direction in the first operation 33 Acceleration waveform in the Z-axis direction in the second operation

Claims (8)

A housing having a display unit;
An angular velocity sensor for detecting an angular velocity around the X axis parallel to the display unit;
An acceleration sensor that detects acceleration in the Z-axis direction perpendicular to the X-axis and perpendicular to the display unit;
A control unit that performs a first process or a second process based on the angular velocity sensor and the acceleration sensor ;
With
The controller is
When the angular velocity sensor detects a negative angular velocity after detecting a positive angular velocity , and the acceleration sensor detects an acceleration in the Z-axis direction, the first processing is performed,
An electronic device that performs the second process when the angular velocity sensor detects a positive angular velocity after detecting a negative angular velocity and the acceleration sensor detects an acceleration in the Z-axis direction . The acceleration sensor further detects acceleration in a Y-axis direction that is parallel to the display unit and orthogonal to the X-axis ,
The controller is
The acceleration sensor detects acceleration in the positive direction of the Y axis, the angular velocity sensor detects a negative angular velocity after detecting the positive angular velocity , and the acceleration sensor detects acceleration in the Z axis direction If the first process is performed,
The acceleration sensor detects an acceleration in the negative direction of the Y axis, the positive angular velocity is detected after the angular velocity sensor detects a negative angular velocity , and the acceleration sensor detects an acceleration in the Z axis direction If the second processing is performed
The electronic device according to claim 1 . Prior Symbol controller, the electronic device according to claim 1 in which the acceleration of the acceleration sensor detects the Z-axis direction when it exceeds a predetermined threshold, performing the first processing or the second processing. When the acceleration in the Z-axis direction detected by the acceleration sensor in the operation of rotating the casing in the positive direction with respect to the X-axis and then rotating in the negative direction is an operation with the left hand when the acceleration in the Z-axis direction exceeds a predetermined threshold value. The electronic device according to claim 1, wherein the electronic device is determined to be an operation with a right hand when the predetermined threshold is not exceeded. When the acceleration in the Z-axis direction detected by the acceleration sensor in the operation of rotating the casing in the negative direction with respect to the X-axis and then rotating in the positive direction is an operation with the right hand when the acceleration in the Z-axis direction exceeds a predetermined threshold value. The electronic apparatus according to claim 1, wherein the electronic device is determined to be an operation with a left hand when the predetermined threshold is not exceeded. The electronic device has a function to browse a book, the first process is a process for performing page turning of the book, the second process in claim 1 is a process for returning the page of the book The electronic device described. The electronic device has a function of displaying an image, the first processing is a processing for displaying the next image, the second process according to claim 1 is a process of displaying the previous image Electronics. The electronic device has a function of reproducing music or a moving image, the first process is a process of reproducing the next music or moving picture, and the second process is a process of reproducing the previous music or moving image. The electronic device according to claim 1 .