KR101646671B1 - Portable electronic apparatus and control method thereof - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a portable electronic device and its operation control method, and more particularly to a portable electronic device capable of sensing a shaking operation by holding a main body of the portable electronic device, A portable electronic device and a method for controlling the operation thereof. The portable electronic device according to the present invention includes a plurality of acceleration sensors installed at different positions, and based on the difference in acceleration or the difference in speed measured by the acceleration sensors, the user can select one of the acceleration sensors A sensing unit that senses a shaking operation that shakes the portable electronic device, and a control unit that executes a predetermined operation based on a generation position or direction of the sensed shaking operation.

Description

[0001] The present invention relates to a portable electronic apparatus and a control method thereof,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a portable electronic device and a method of controlling the operation thereof, and more particularly to a portable electronic device capable of sensing a shaking operation by holding a main body of the portable electronic device, To an electronic device and a method for controlling the operation thereof.

2. Description of the Related Art In recent years, techniques for controlling the operation of a portable electronic device by attaching an acceleration sensor or the like to a portable electronic device through information such as a tilt or a shake detected through the acceleration sensor have been proposed and used.

However, since these technologies use one acceleration sensor to recognize such tilts and shakes, there is no problem in recognizing a general impact or shake. However, it is not a simple shake correction but a portable electronic device It is necessary to recognize the shaking of the portable electronic device as a range of information in order to use it as a technology for controlling the operation of the portable electronic device.

The present invention relates to a portable electronic device capable of sensing a shaking operation of holding a main body of a portable electronic device by using a plurality of acceleration sensors at different positions and manipulating the operation of the portable electronic device according to the generation position and direction thereof, And an operation control method.

According to an aspect of the present invention, there is provided a portable electronic device including: a plurality of acceleration sensors installed at different positions within a portable electronic device; A sensing unit that senses a shaking operation of shaking the portable electronic device based on a difference in acceleration measured by the acceleration sensors or a difference in speed between a user and a portion of the acceleration sensor; And a control unit for executing a predetermined operation based on a position or direction of occurrence of the sensed shaking operation.

Preferably, the occurrence position of the shaking operation corresponds to one of the positions where the acceleration sensors are installed, and the direction of the shaking operation corresponds to the position of the acceleration sensor in the X-, Y-, and Z- It may correspond to the direction in which the difference in speed or acceleration occurs.

Preferably, the acceleration sensors may be installed respectively at the top and bottom of the portable electronic device, or at the left and right portions of the portable electronic device, respectively.

Preferably, the control unit switches the operation mode of the portable electronic device based on the detected position or direction of the detected shaking operation, displays the image stored in the portable electronic device or reproduces the content, The user can select an image or content in the previous or next order of the currently selected image or content.

The plurality of acceleration sensors may further include a third acceleration sensor for measuring a linear acceleration passing through a position of the first acceleration sensor and a position of the second acceleration sensor among the plurality of acceleration sensors.

According to another aspect of the present invention, there is provided a method of controlling an operation of a portable electronic device including a plurality of acceleration sensors at different positions, Sensing a shaking operation of shaking the portable electronic device around a portion where the portable electronic device is located; And a control step of executing the predetermined operation based on the position of the detected shaking operation or the direction of the measured acceleration.

Preferably, the occurrence position of the shaking operation corresponds to one of the positions where the acceleration sensors are installed, and the direction of the shaking operation corresponds to the position of the acceleration sensor in the X-, Y-, and Z- It may correspond to the direction in which the difference in speed or acceleration occurs.

Preferably, the controlling step comprises switching the operating mode of the portable electronic device based on the location or orientation of the sensed shaking operation, displaying an image stored in the portable electronic device, playing the content, You can select the image or content of the currently selected image or content in the previous or next order of the content.

According to the portable electronic device and the operation control method thereof according to the present invention, the operation of the portable electronic device can be controlled only by the shaking operation in which the portable electronic device is shaken in one hand without pressing the button separately, A portable electronic device can be conveniently used even in a non-free situation, and a wider range of operations can be performed with only one hand, thereby improving operability of an electronic device, and improving amusement and convenience.

The above objects, features and advantages will become more apparent from the following detailed description in conjunction with the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

On the other hand, when an element is referred to as including an element, it does not exclude other elements unless specifically stated otherwise, but may include other elements.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1A is a perspective view showing the front and top contours of a digital camera, which is one embodiment of a portable electronic device according to the present invention. 1A, the main body 1A of the digital camera 1 according to the present embodiment has a size such that the user can carry it with one hand, and includes a top surface 1a, And may have a rectangular parallelepiped shape having six surfaces including a front surface portion 1b, a left surface portion 1c, a back surface portion 1d, a right side surface portion 1e, and a bottom surface 1f.

A shutter release button 11 and a power switch 17 are provided on the upper side of the digital camera 1. The front side of the digital camera 1 is provided with a flash 13 , An objective lens 15a of the viewfinder, and a lens unit 19. [

The shutter release button 11 is opened and closed to expose the CCD or film to light for a predetermined time, and the image is recorded on the CCD by properly exposing the subject in cooperation with the aperture (not shown).

The flash 13 illuminates the bright light instantly when light is taken in a dark place. In the flash mode, there are automatic flash, forced flash, no flash, red-eye reduction, and slow synchro flash.

The objective lens unit 15a of the viewfinder is a small window of the camera for viewing the subject to be photographed and setting the composition.

A plurality of acceleration sensors (not shown) may be mounted at different positions in the main body 1A in the main body 1A of the digital camera 1 according to the present embodiment. At this time, each acceleration sensor can detect an acceleration with respect to three axes of the X-axis, the Y-axis orthogonal to the X-axis, and the Z-axis orthogonal to the X-axis and the Y-axis. 1, the X-axis is set as an axis along the horizontal center line of the upper surface portion 1a of the main body portion 1A of the portable content player 1, and the Y- , And is set as an axis along the vertical center line of the upper surface portion 1a in the main body portion 1A. The X axis is set as an axis orthogonal to the upper face portion 1a (and the lower face portion 1f) of the main body portion 1A.

FIG. 1B is a rear view of the rear view of the digital camera shown in FIG. 1A.

1B, a direction button 21, a menu-OK button 22, a wide angle-zoom button W, and a telephoto button 22 are provided on the back surface or back surface 1d of the digital camera 1, A Telephoto-Zoom button T, a display panel 25, and the like.

The direction button 21 may include a total of four buttons including an up button 21a, a down button 21b, a left button 21c, and a right button 21d. The direction button 21 and the menu-OK button 22 are keys for inputting various menus related to the operation of the portable electronic device such as a digital camera.

Wide angle-zoom button W or telephoto-zoom button T widens the view angle or narrows the view angle depending on the input. In particular, it can be used to change the size of the selected exposure area. As the display panel 25, an image display device such as a liquid crystal display (LCD) may be used.

The display panel 25 may be included in the display unit 350 (FIG. 3) in which the input image captured from the outside and input from the stored image file can be displayed.

As an embodiment of a portable electronic device to which the present invention can be applied, a digital camera, a control device thereof, and a control method thereof are disclosed in U.S. Patent Application Publication No. 2004/0130650 (titled: automatic focusing using a quadratic function of a camera Method, a method of automatically focusing using a quadratic function in camera.

The digital camera, its control device, and control method disclosed in the U.S. application are incorporated herein, and a detailed description thereof will be omitted.

Fig. 2 is a block diagram of the control device 200 of the digital camera shown in Figs. 1A and 1B. The control device 200 of the digital camera according to the present embodiment can be mounted inside the digital camera 1 of Fig.

Referring to FIG. 2, an optical system (OPS) including a lens unit and a filter unit optically processes light from a subject. The lens unit of the optical system OPS includes a zoom lens, a focus lens, and a compensation lens.

When the user presses the wide-zoom button W or telephoto-zoom button T included in the user input unit INP, a corresponding signal is input to the microcontroller 212. Accordingly, as the microcontroller 212 controls the lens driving unit 210, the zoom motor M _Z is driven to move the zoom lens.

When the wide angle-zoom button (W) is pressed, the focal length of the zoom lens is shortened and the angle of view is widened so that the input image is reduced. When the telephoto-zoom button T is depressed, the focal length of the zoom lens becomes long, The input image is enlarged and input.

Meanwhile, in the auto focusing mode, the main controller built in the digital signal processor 207 controls the lens driving unit 210 through the micro controller 212, so that the focus motor M _F is driven do. That is, the focus motor M _F is driven to move the focus lens to a position where the sharpest picture can be obtained.

The compensation lens compensates for the overall refractive index and is not driven separately. Reference symbol M _A denotes a motor for driving an aperture (not shown).

In the filter section of the optical system (OPS), an optical low pass filter removes optical noise of a high frequency component. Infra-red cut filter blocks the infrared component of incident light.

The photoelectric conversion unit OEC may include an image pickup device such as a CCD (Charge Coupled Device) or a CMOS (Complementary Metal-Oxide-Semiconductor). The photoelectric conversion unit OEC converts light from the optical system OPS into an electrical analog signal.

The analog-to-digital conversion unit may include a CDS-ADC (Correlation Double Sampler and Analog-to-Digital Converter) The analog-to-digital converter processes the analog signal from the photoelectric converter (OEC), removes the high-frequency noise, adjusts the amplitude, and converts the analog signal into a digital signal. Here, the digital signal processor 207 controls the timing circuit 202 to control the operations of the photoelectric conversion unit (OEC) and the analog-digital conversion unit 201.

The optical system (OPS), the photoelectric conversion unit (OEC), the CDS-ADC device 201 and the like may be included in the image input unit (330 of FIG. 3) according to the present invention.

The real-time clock 203 provides time information to the digital signal processor 207. The digital signal processor 207 processes digital signals from the CDS-ADC device 201 to generate digital image signals classified into luminance (Y value) and chromaticity (R, G, B) signals.

A self-timer lamp, an auto-focus lamp, a mode indicating lamp, a flash standby lamp, and the like are connected to the light emitting unit (LAMP) driven by the microcontroller 212 under the control of the main controller incorporated in the digital signal processor 207 .

The digital signal processor 207 and / or the microcontroller 212 may be included in the controller (320 of FIG. 3) according to the present invention. In addition, the user input inputted by the operation of the user operation unit 360 of FIG. 3 according to the present invention is input to the digital signal processor 207 and / or the micro controller 212 through the user input unit INP, The work can be performed accordingly.

A digital image signal from the digital signal processor 207 is temporarily stored in a DRAM (Dynamic Random Access Memory) 204. An EEPROM (Electrically Erasable and Programmable Read Only Memory) 205 stores algorithms and setting data such as a boot program and a key input program necessary for the operation of the digital signal processor 207. In the memory card interface 206, a user's memory card can be attached and detached.

The memory card recognized through the DRAM 204 or the memory card interface 206 may store the input image or the stored image file, which is photographed and input from the outside, temporarily or nonvolatilely, 340).

That is, the storage unit 340 may store data such as an input image or an edited image or an italic data input from an image file captured from the outside or stored in the DRAM 204 or a cache memory temporarily or nonvolatile, A memory card or the like which is mounted so as to be mounted thereon.

The digital image signal from the digital signal processor 207 is input to the display panel driver 214, thereby displaying an image on the display panel 215. [ The display panel 215 may be driven by the display panel driver 214 under the control of the digital signal processor 207.

The display panel 215 and the display panel driving unit 214 may be included in the display unit 350 of FIG. 3 in which an input image input from an image file photographed from the outside and stored or stored according to the present invention may be displayed.

On the other hand, the digital image signal from the digital signal processor 207 can be transmitted by serial communication through a USB (Universal Serial Bus) connection part 31a or an RS232C interface 208 and its connection part 31b, 209 and the video output unit 31c as video signals. Here, the digital signal processor 207 may incorporate a micro controller therein.

The audio processor 213 outputs the audio signal from the microphone MIC to the digital signal processor 207 or the speaker SP and outputs the audio signal from the digital signal processor 207 to the speaker SP .

In the present specification, a digital camera is exemplified and described as a preferred embodiment of the portable electronic device of the present invention. However, the present invention is not limited to this example. For example, in addition to the digital camera exemplified for explanation, , A PMP, a netbook, and the like, all of which can be carried by the user on the move.

3 is a block diagram of a digital camera 300 according to an embodiment of the present invention.

Referring to FIG. 3, the digital camera 300 according to the present embodiment includes a plurality of acceleration sensors 380, and includes a sensing unit 310; A control unit 320; A video input unit 330; A storage unit 340; A display unit 350; And a user operation unit 360. [ The digital camera 300 according to the present embodiment can be controlled by the control method (S500) of the portable electronic device shown in Fig.

Acceleration sensors 380 in the present embodiment are mounted at different positions on the body of the digital camera 300 to measure the dynamic velocity / acceleration of the digital camera 300, And the present specification has been described on the assumption of such a three-axis acceleration sensor, but this is merely an example, and the present invention is not limited thereto.

The sensing unit 310 senses a shaking operation in which the user shakes the main body of the digital camera 300 around a portion where one of the acceleration sensors 380 is located.

The signals obtained by detecting the acceleration or acceleration of the acceleration sensors 380 are converted into digital data that can be processed by the control unit 320 and transmitted to the control unit 320 by the sensing unit 310.

In this embodiment, the sensing unit 310 includes a sensing unit 310 that senses an X-axis, a Y-axis, and a Z- 1A) to be detected. Accordingly, the acceleration sensors 380 detect the dynamic velocity or acceleration of at least one of the X, Y, and Z axes in accordance with the shaking operation of the user and transmit the detected velocity or acceleration to the controller 310 do.

In the digital camera 300 of the present embodiment configured as described above, in addition to the ordinary operation using the user's operation unit 360, the digital camera 300 can be moved to a predetermined position where one of the plurality of acceleration sensors is mounted The predetermined operation to the digital camera 300 can be controlled by the operation method "to make a movement of strongly swinging along a predetermined body direction at a predetermined timing at a predetermined center". Hereinafter, this point will be described. Further, in the above-described operating method, a predetermined operation of "strongly shaking the digital camera 300 along a predetermined body direction around a predetermined position where one of the plurality of acceleration sensors is mounted" Here, it is also referred to as a " shaking operation ".

The acceleration sensors 380 in the present embodiment should be installed at different positions in the digital camera 300. [ For example, when there are two acceleration sensors, the first acceleration sensor, which is one of the acceleration sensors, is installed on the upper part of the digital camera 300, and the second acceleration sensor, which is the other one, In addition, the first acceleration sensor and the second acceleration sensor may be provided on the left side and the right side of the digital camera, respectively.

As described above, the shaking operation according to the present embodiment refers to an act of shaking strongly around a predetermined position where one of the plurality of acceleration sensors is mounted, so that the occurrence position of the shaking operation is determined by the acceleration sensors Lt; / RTI > position.

Since the shaking operation according to the present embodiment refers to an act of shaking strongly along a predetermined body direction as defined above, the direction of the shaking operation is the X-axis, Y-axis and Z-axis Direction. ≪ / RTI >

The control unit 320 executes a predetermined operation based on the detected position or direction of the shaking operation.

The control unit switches the operation mode of the digital camera based on the detected position or direction of the shaking operation, displays the image stored in the digital camera, reproduces the content, or displays the currently selected image among the images or contents sequentially stored in the digital camera You can select an image or content in the previous or next order of the content.

The image input unit 330 may receive an input image captured from the outside or input from an image file.

The storage unit 340 may store image files, motion data, and the like. In the display unit 350, a photographed input image, a stored input image, and an edited image to be edited can be displayed. The user operation unit 360 can be operated by a user so as to input a desired command from the outside.

The image input unit 330 receiving the input image may include an optical system (OPS), a photoelectric conversion unit (OEC), a CDS-ADC device 201, etc. of FIG. At this time, the optical system (OPS) may include various lenses including a zoom lens. The CDS-ADC element 201 may be included in an image pickup element that receives an input image input through a lens.

The storage unit 340 may store an image file of an input image photographed from the outside and a stored image file. The storage unit 340 may include a DRAM (204 in FIG. 2) for temporarily storing data or a cache memory or a flash memory or a memory card in which data is stored in a non-volatile manner.

The user operation unit 360 can be operated by a user so as to input a desired command from the outside. The directional buttons (21 in Fig. 1), the menu-OK button (22 in Fig. 1), the shutter release button (26 in Fig. 1), and the power switch .

The digital camera 300 according to the present embodiment is capable of performing almost all operations using these user operation units 360. In addition to the operations by these user operation units 360, As described above, the present invention can be implemented by a shaking operation in which the user holds the main body 1A in the hand and shakes it strongly.

4A to 4C are views for explaining a process of detecting a user's shaking operation by the sensing unit of the portable electronic device 400 according to an embodiment of the present invention.

Referring to FIG. 4A, the portable electronic device 400 according to the present embodiment includes one acceleration sensor at each of a left side portion and a right side portion, and these acceleration sensors have dynamic speeds in the X-axis, Y- The acceleration can be measured.

4B, a moment in the Y-axis direction is generated when the right side portion is gripped in the X-axis direction, so that the velocity V _{(l (x, y)} and the velocity V _{(r, x)} in the X axis direction measured by the acceleration sensor R located on the right side of the equation (1).

V _{(l, x)} = V _{(r, x)} + (distance D between the acceleration sensors L and R) x (angular velocity)

Further, in the left portion acceleration sensor (L) of the acceleration _{(A (l, x))} in the Y-axis direction measured by the acceleration in the Y-axis direction measured by the acceleration sensor (R) is located on the right-side portion (A _{(r, x )} ), The equation (2) is established.

A _{(l, x)} = A _{(r, x)} + (distance D between the acceleration sensors L and R) x (angular acceleration)

In general, if the user intentionally moves the portable electronic device horizontally without shaking, the speed or acceleration measured by the sensors located on the left and right sides will be the same.

However, when the user grasps one of the left and right parts of the portable electronic device as shown in FIG. 4B, the difference between the speeds or the accelerations measured by the sensors located at the right and left sides occurs.

When the difference between the speeds or the accelerations measured by the sensors located at the right and left sides is equal to or greater than a predetermined reference value, the user can intentionally sense an operation to shake one of the left and right parts of the portable electronic device, that is, a shaking operation.

For example, in the case of V _{(l, x)} >> V _{(r, x)} or A _{(l, x)} >> A _{(r, x)} , the user can grasp the right portion of the portable electronic device, Conversely, when V _{(l, x)} << V _{(r, x)} or A _{(l, x)} << A _{(r, x)} , the user can perceive that he /

4C shows a case in which the user grips the right side portion of the device and shakes in the Z-axis direction in the portable electronic device according to the present embodiment, and a moment in the Y-axis direction is generated, and V _{(l, y)} >> V _{(r, y)} or A _{(l, y)} >> A _{(r, y)} .

Therefore, the portable electronic device according to the present embodiment uses the physical characteristics to install a plurality of acceleration sensors at different positions to compare the difference in the measured speed or acceleration value from the plurality of acceleration sensors, It is possible to detect the operation and obtain the position or direction of occurrence of such a shaking operation.

5 is a flowchart illustrating a method of controlling an operation of a portable electronic device (S500) according to an exemplary embodiment of the present invention. The operation control method S500 of the portable electronic device according to the present embodiment may be implemented in the control device 200 of the digital camera shown in Fig. 2 and / or the digital camera 300 shown in Fig. Therefore, the same items as those in the description of the control device 200 of the digital camera of Fig. 2 and the digital camera 300 of Fig. 3 are referred to.

Referring to FIG. 5, firstly, based on a difference in speed or acceleration measured by a plurality of acceleration sensors installed at different positions in the portable electronic device, a user moves the portable electronic device around a portion where one of the acceleration sensors is located The position and direction of occurrence of the shaking shaking operation are sensed (S510).

Preferably, the occurrence position of the shaking operation corresponds to one of the positions where the acceleration sensors are installed, and the direction of the shaking operation corresponds to the position of the acceleration sensor in the X-, Y-, and Z- It may correspond to the direction in which the difference in speed or acceleration occurs.

In step S520, the predefined operation is executed based on the detected position or direction of the shaking operation detected in step S510.

Here, the predetermined operation is a function of switching the operation mode of the portable electronic device based on the position or direction of occurrence of the sensed shaking operation, displaying the image stored in the portable electronic device, reproducing the content, And selecting an image or content in the previous or next order of the currently selected image or content among the sorted and stored images or contents.

6 is a flowchart showing a flow of a method (S600) of switching a photographing mode of a digital camera function according to a user's shaking operation in a portable electronic device according to a preferred embodiment of the present invention.

The portable electronic device in the present embodiment has three shooting modes of 'program mode (hereinafter referred to as mode A)', 'aperture priority mode (hereinafter referred to as mode B)' and 'shutter speed priority mode A mode -> B mode -> C mode -> C mode in accordance with the direction button 21 (see FIG. 2) and the menu-OK button 22 (see FIG. 2) > A mode, but it is also implemented so that the shooting mode can be switched by the user's shaking operation.

Referring to FIG. 6, accelerations according to a user's shaking operation are measured at two acceleration sensors, one at each of the left side and the right side of the portable electronic device (S601).

The acceleration A _l measured by the acceleration sensor provided at the left side is compared with the acceleration A _r measured by the acceleration sensor provided at the right side (S602 through S603).

If A _l is larger than A _r by a predetermined value or more (S 602), it is determined that the user holds the right part of the digital camera by shaking (S 604). If A _l is smaller than A _{r by at} least a predetermined value (S 603) It is determined that the left side portion of the digital camera is held (S605).

In this embodiment, as shown in FIG. 9A, when the right side portion R of the digital camera C is held and shaken, the mode switching is performed in the order of A mode- > B mode- > C mode- > A mode Can be defined as being switched. For example, if the current mode is 'mode A' (S606), the mode is switched to 'mode B' (S607). If the current mode is 'mode B' (S606) Is 'mode A' (S606), it is switched to 'mode B' (S609).

9B, when the left side L of the digital camera C is held and shaken, the mode change is reversed in the order of A mode- > C mode- > B mode- > A mode . For example, when the current mode is 'mode A' (S611), the mode is switched to 'mode C' (S612). If the current mode is 'mode B' (S611) Is 'mode C' (S611), it is switched to 'mode B' (S614).

For example, in the case of the 'aperture priority mode (mode B)', the mode is switched to the program mode (mode A) when the left side portion of the apparatus main body is shaken and the shutter speed priority mode (mode C) .

FIG. 7 is a flowchart illustrating a method of displaying stored images according to a user's shaking operation (S700) in a portable electronic device according to a preferred embodiment of the present invention.

In the portable electronic device according to the present embodiment, in displaying the stored images, the 'image unit mode' for displaying the stored images one by one in units of individual images and the plurality of images in which the shooting time and the location are common The user can press the direction button 21 (see FIG. 2) of the user's operation unit to display the currently displayed image or album among the images or albums sequentially stored in the digital camera, Or to display images or albums in the previous or next order of the album.

Also, in 'image unit mode', tabs with the same function as the tab key of the general computer keyboard are set to display images in the order of the next through the plurality of images in the forward direction at a time Or to display the images in the previous order in reverse order at a time. In this case, it is necessary to set a specific number of images to be passed through at one time through the tab. If a specific number is not set, the image in the first order is displayed in the forward direction. In the reverse direction, You can set it to display an image.

Referring to FIG. 7, steps S701 to S605 of FIG. 6 are the same as steps S701 to S705, in which the user's shaking operation is detected and the generation position of the shaking operation is recognized.

In this embodiment, as shown in FIG. 9A, when the right side portion R of the digital camera C is caught and shaken, it can be defined as moving in the reverse direction (backward -> forward). For example, if the current mode is the 'image unit mode' (S706), it is checked whether the tab is set (S707). If the tab is set and the tab value is set to N (S708) (S709). If the value of the tab is not set, the image in the first order is displayed (S710), and the tab itself is set If not, an image in the immediately preceding sequence is displayed (S711). If the current mode is not the 'image unit mode', the 'album unit mode' displays the images belonging to the immediately preceding album at once (S712).

On the other hand, in this embodiment, as shown in FIG. 9B, when the left part L of the digital camera C is caught and shaken, it can be defined as moving in the forward direction (forward -> backward). For example, if the current mode is the 'image unit mode' (S721), it is checked whether the tab is set (S722). If the tab is set and the tab value is set to N (S723) (S724). If the values of the tabs are not set, the images in the last order are displayed (S725), and the tab itself is set If not, an image in the immediately following sequence is displayed (S726). If the current mode is not the 'image unit mode', since it is the 'album unit mode', the images belonging to the immediately following album are displayed at once (S727).

FIG. 8 is a flowchart illustrating a method of reproducing contents stored in accordance with a user's shaking operation (S800) in a portable electronic device according to an exemplary embodiment of the present invention.

The portable electronic device according to the present embodiment is a multifunctional digital camera having a playback function of contents such as MP3. In the case of reproducing the stored contents, a 'file unit mode' for displaying the contents one by one in units of individual contents files, Album mode "in which a plurality of content files common to authors, etc. are reproduced in a single album, and the user presses the direction button 21 (see FIG. 2) It is possible to operate to reproduce a content file or an album that is in the previous or next order of the content file or the album currently being played out among the sequentially stored content files or albums.

Referring to FIG. 8, steps S801 to S805 of FIG. 6 are the same as steps S801 to S805 of detecting the user's shaking operation and recognizing the occurrence position of the shaking operation.

In this embodiment, as shown in FIG. 9A, when the right side portion R of the digital camera C is caught and shaken, it can be defined as moving in the reverse direction (backward -> forward). For example, if the current mode is 'file unit mode' (S806), the content in the immediately preceding order of the currently playing content file is played back (S807). If the current mode is not the 'file unit mode' but the 'album unit mode', the content file in the earliest among the content files belonging to the album immediately before the album to which the currently playing content file belongs is played (S808) .

In this embodiment, as shown in FIG. 9B, it can be defined as moving in the forward direction (forward - > backward) when holding the left portion L of the digital camera C and shaking it. For example, if the current mode is 'file unit mode' (S810), the content in the immediately following sequence of the currently playing content file is played back (S811). If the current mode is not the 'file unit mode' but the 'album unit mode', the content file immediately before the album to which the currently playing content file belongs is played back in the order of the content files belonging to the album (S812) .

10 is a diagram illustrating a process of recognizing a direction of a user's shaking operation in a portable electronic device having three acceleration sensors according to an embodiment of the present invention.

Referring to FIG. 10, a first acceleration sensor 1001 is located on the left side of the portable electronic device 1000, and a second acceleration sensor 1002 is located on the right side of the portable electronic device 1000 according to the present embodiment.

In this case, the shaking operation of the user shaking in the x-axis direction and the z-axis direction can be recognized. However, in the y-axis direction, that is, the linear direction passing through the position of the first acceleration sensor 1001 and the position of the second acceleration sensor 1002 Can not recognize the shaking operation of the shaking user. Since the first acceleration sensor 1001 and the second acceleration sensor 1002 are parallel to each other with respect to the y-axis direction, the velocity or acceleration measured by the first acceleration sensor 1001 and the velocity or acceleration measured by the second acceleration sensor 1002 The difference between the measured speed or the acceleration does not occur.

Therefore, in order to recognize the shaking operation of the user shaking in the y-axis direction, a third acceleration sensor 1003 is required which is located on a straight line passing through the position of the first acceleration sensor and the position of the second acceleration sensor.

When the number of the acceleration sensors is increased, the range of recognizing the user's shaking operation can be extended, so that various operations of the portable electronic device can be controlled with only one hand.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, You will understand. Accordingly, the true scope of protection of the present invention should be determined only by the appended claims.

FIG. 1A is a perspective view showing the front and top contours of a digital camera, which is one embodiment of a portable electronic device according to the present invention.

FIG. 1B is a rear view showing the rear external shape of a digital camera, which is one embodiment of the portable electronic device according to the present invention.

2 is a block diagram of a control device of a digital camera which is an embodiment of a portable electronic device according to the present invention.

3 is a block diagram of a digital camera according to an embodiment of the present invention.

4A to 4C are views for explaining a process of detecting a user's shaking operation in the sensing unit of the portable electronic device according to an embodiment of the present invention.

5 is a flowchart illustrating a method of controlling an operation of a portable electronic device according to an exemplary embodiment of the present invention.

6 is a flowchart illustrating a method of switching a photographing mode of a digital camera function according to a user's shaking operation in a portable electronic device according to a preferred embodiment of the present invention.

7 is a flowchart illustrating a method of displaying stored images according to a user's shaking operation in a portable electronic device according to an exemplary embodiment of the present invention.

8 is a flowchart illustrating a method of reproducing contents stored in accordance with a user's shaking operation in a portable electronic device according to an exemplary embodiment of the present invention.

9A is a diagram showing an embodiment of a shaking operation in which the right side portion of the portable electronic apparatus is held and shaken in the present invention.

9B is a view showing an embodiment of a shaking operation in which the left side portion of the portable electronic device is held and shaken in the present invention.

10 is a diagram illustrating a process of recognizing a direction of a user's shaking operation in a portable electronic device having three acceleration sensors according to an embodiment of the present invention.

Claims (8)

In a portable electronic device, A plurality of acceleration sensors provided at different positions within the portable electronic device; Wherein the plurality of acceleration sensors detect a difference between the accelerations measured on the x, y, and z axes that are orthogonal to each other, or a difference in velocity between the acceleration sensors, A sensing unit for sensing a shaking operation; And And a control unit for executing a predetermined operation based on the detected position or direction of the detected shaking operation, Further comprising a third acceleration sensor located apart from a straight line passing through the position of the first acceleration sensor and the position of the second acceleration sensor among the plurality of acceleration sensors and measuring the acceleration in the linear direction, Device. The method according to claim 1, Wherein the occurrence position of the shaking operation corresponds to one of the positions where the plurality of acceleration sensors are installed, Wherein the direction of the shaking operation corresponds to a direction in which a difference between speeds measured in the x-axis, y-axis, and z-axis directions measured by the plurality of acceleration sensors or acceleration measured by the plurality of acceleration sensors Lt; / RTI &gt; The method according to claim 1, Wherein the first acceleration sensor and the second acceleration sensor are installed on the upper portion and the lower portion of the portable electronic device, respectively, or are provided on the left side portion and the right side portion of the portable electronic device, respectively. The method according to claim 1, The control unit may switch the operation mode of the portable electronic device based on a position or direction of the sensed shaking operation, display an image stored in the portable electronic device, reproduce the content, And selects an image or a content in a previous or next order of the currently selected image or content among the stored image or contents. delete A method for controlling an operation of a portable electronic device in which a plurality of acceleration sensors are incorporated at different positions, And a shaking operation for shaking the portable electronic device around a portion where the user has one of the acceleration sensors based on the difference in acceleration measured for the x, y, and z axes, in which each of the plurality of acceleration sensors is orthogonal to each other Sensing; And a control step of executing a predetermined operation based on the detected position or direction of the detected shaking operation, Further comprising a third acceleration sensor located apart from a straight line passing through the position of the first acceleration sensor and the position of the second acceleration sensor among the plurality of acceleration sensors and measuring the acceleration in the linear direction, A method of controlling operation of a device. The method according to claim 6, Wherein the occurrence position of the shaking operation corresponds to one of the positions where the plurality of acceleration sensors are installed, Wherein the direction of the shaking operation corresponds to a direction in which a difference in velocity or acceleration measured by the plurality of acceleration sensors among velocities or accelerations in the X-axis, Y-axis, and Z-axis directions measured by the plurality of acceleration sensors Of the portable electronic device. The method according to claim 6, Wherein the controlling step includes switching the operation mode of the portable electronic device based on a position or orientation of the sensed shaking operation, displaying an image stored in the portable electronic device, reproducing the content, And selecting an image or a content in a previous or next order of the currently selected image or content among the stored image or contents.

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