KR20140115683A - Apparatus and method for taking an image - Google Patents

Abstract

The present invention relates to a digital recording device having a recording button and a zoom slider and a recording method using the same. The digital recording device includes: a recording button formed on a part of a touch screen; and a zoom slider formed in a slide-bar shape on a part of the touch screen with the recording button at the center. The zooming function is executed when the recording button is pressed more than a predetermined period of time, and the recording button can be slid on the zoom slide bar. Thereby, a user can easily set the shutter operation and the zoom operation when recording.

Description

TECHNICAL FIELD [0001] The present invention relates to a digital photographing apparatus,

The present invention relates to a digital photographing apparatus having a photographing button and a zoom slider, and a photographing method using the digital photographing apparatus.

2. Description of the Related Art Generally, as a user interface (UI) for receiving a setting of a user from a digital camera, a plurality of operation buttons structurally projected from the main body are employed. However, such a button-type user interface increases the number of component parts and, in particular, deteriorates the overall appearance of the digital camera in view of the taste of recent customers who pay more attention to the outward appearance of the product, Become

In recent years, by adopting various interfaces as an OSD (On Screen Display) method, user's satisfaction is improved without hindering the overall appearance of digital devices.

In particular, a digital camera can display a menu on the screen for operating many functions through an OSD (On Screen Display). For example, it is possible to select a zoom-in zoom-out according to the shooting environment during shooting, and to provide a shooting menu such as a landscape, a portrait, etc., EVC (Exposure Value Compensation) ISO (International Organization for Standardization), Flash, Focus, and White Balance.

On the other hand, the communication terminal is a portable device having one or more functions of being able to carry and input / output information, a function of performing voice and video communication, and a function of storing data. As the functions of such communication terminals are diversified, they have complicated functions such as photographing and photographing of movies, reproduction of music files and video files, reception of games, broadcasting, provision of wireless Internet environment, multimedia device).

In the case of such a digital camera or a communication terminal, researches on a user interface employing a touch screen method are actively conducted. Accordingly, various convenient user interface environments such as a menu screen are provided by touch input through the screen.

Although the interface for user's convenience has been studied in such a background, since the zoom setting function and the shutter operation function, which are frequently used at the time of shooting, are separated from each other, the shooting is performed through two or more setting actions, And the preparation time for photographing may be delayed.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a digital photographing apparatus and a control method thereof that support an improved user interface so that a user can easily operate a zoom- The purpose is to provide.

A digital photographing apparatus according to a first aspect of the present invention includes a photographing button displayed on an arbitrary area of a touch screen and a zoom slider displayed in a slide bar shape centering on the photographing button on a part of the touch screen, The photographing button is characterized in that the pressed state and the released state are displayed differently according to the touch detection.

The photographing button is slidable on the zoom slider when the photographing button is pressed for a predetermined time and performs a zoom-out function when the photographing button is moved to one end of the zoom slider in a state where the photographing button is slidable, When the shooting button moves to the other end of the zoom slider, zoom in function is performed. And the photographing button returns to the center of the zoom slider when the photographing button is pressed and released from the pressed state.

If the center of the photographing button moves within a predetermined malfunction prevention period after the photographing button is pressed, it is regarded that the photographing button is not moved.

The erroneous operation prevention section exists in the outline of the photographing button.

When the photographing button is moved from the center of the zoom slider to one end and the zoom function is performed, the zoom speed is gradually increased as the zoom position is moved from the center to the end point of the end, And the speed is maximized.

According to a second aspect of the present invention, there is provided a digital photographing method comprising the steps of: displaying a photographing screen including a photographing button and a zooming slide bar on a touch screen in response to a user's touch input; Checking whether the pressed state duration is within a predetermined time when a touch is detected for a predetermined period of time or longer with respect to the photographing button; and when the pressed state is continued for a predetermined time or longer, The method of claim 1, further comprising the step of: detecting whether the zoom slide bar is moved to one end or the other end of the zoom slide bar, performing a zoom function according to movement of the shooting button, A step of photographing is performed.

The zoom speed is gradually increased as the photographing button is moved from the center of the zoom slide bar to the end point of the end in the zoom functioning step and the zoom speed is maximized when the photographing button is located at the end point of the end.

When the center of the photographing button moves within the predetermined malfunction preventing section after the photographing button is pressed in the movement detecting step of the photographing button, it is regarded as no movement, Line.

The photographing screen is displayed in an arbitrary area of the touch screen, and the zooming slider is displayed in a slide bar shape centered on the photographing button.

According to an embodiment of the present invention, the user can set the zoom function and the shutter operation at the time of photographing with a single touch, thereby achieving high convenience.

In addition, according to the embodiment of the present invention, there is an effect that a malfunction of a zoom in and zoom out operation at the time of photographing can be prevented by the user.

In addition, according to an embodiment of the present invention, there is an effect that the user can easily adjust the zoom speed during photographing.

1 is an exemplary diagram illustrating a functional configuration of an example of a digital photographing apparatus according to an embodiment of the present invention.
2 is a view illustrating a touch screen that provides a setting screen according to an imaging condition according to an exemplary embodiment of the present invention.
FIG. 3 is a diagram illustrating a pressed state and a pressed-down state of the photographing button according to an embodiment of the present invention.
FIG. 4 is a view illustrating a moving state of the photographing button according to an exemplary embodiment of the present invention.
5 is a diagram illustrating an automatic return of a photographing button according to an embodiment of the present invention.
6 is a diagram illustrating a malfunction prevention period in the zoom slider according to an embodiment of the present invention.
7 is a flowchart illustrating a digital photographing method according to an embodiment of the present invention.
FIG. 8 is a diagram illustrating a screen on which a zoom function is performed according to an embodiment of the present invention.

In the present specification, the digital photographing apparatus is not only a camera which is a photographing apparatus of a consultation classified on the basis of merely morphological characteristics, but a mobile phone having a proper photographing function, and is not limited to a mobile phone, a PDA, a smart phone, It is used in a broad sense to encompass both the portable information processing apparatus and the apparatus having the photographing function.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The configuration of the present invention and the operation and effect thereof will be clearly understood through the following detailed description. Before describing the present invention in detail, the same components are denoted by the same reference symbols as possible even if they are displayed on different drawings. In the case where it is judged that the gist of the present invention may be blurred to a known configuration, do.

Fig. 1 schematically shows the overall configuration of a digital camera, which is an example of a digital photographing apparatus according to an embodiment of the present invention. 1, the digital camera includes an optical unit 110 including a plurality of optical lenses to image an object image with respect to an image pickup surface, an image of a subject via the optical unit 110, An analog front end circuit 130 (Analog Front End: AFE circuit) for converting an output signal of the image pickup device 120 into a quantized digital image signal, an image pickup device 120 for signal processing, A buffer memory 140 for temporarily storing video signals to provide a work area, a recording medium 170 in which video data of a subject is stored in the form of a still image or a moving picture file, And a digital signal processor (150). The digital camera includes a touch screen 180 that receives an image signal from the digital signal processor 150 and displays the image signal on the screen, and senses the touch position of the user and transmits the sensed position to the digital signal processor 150.

The optical unit 110 includes a zoom lens 112 for changing the focal distance while moving back and forth along the optical axis direction, a shutter 114 and an aperture 116 for adjusting the exposure time and the amount of incident light to the image pickup device 120, And a focus lens 118 for adjusting the focus of an object image formed on the image pickup device 120. [ The photographing operation of the optical unit 110 can be controlled by the digital signal processor 150 via the driver 111. [ According to another embodiment of the present invention, the zoom function may be implemented by a digital zoom method. The digital zoom obtains a zooming effect by enlarging and displaying a part of the image of the photographed image data by a digital processing method, and it is possible to obtain a zooming effect simply by software without changing hardware such as a lens. It is usually provided as a complement to optical zooming on the lens side.

The imaging device 120 is a CCD (Charged Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor) image sensor. The imaging device 120 converts an image of an object incident via the optical unit 110 into an electrical image signal do. The operation of the imaging device 120 can be controlled by the digital signal processor 150. [

The analog front end circuit 130 (AFE circuit) performs CDS (Correlated Double Sampling) processing and ADC (Analog Digital Conversion) processing on the output signal of the image pickup element 120, Converts an analog image signal into a digital image signal. The digital image signal is transferred to the encoder / decoder 160, converted into encoded data according to a prescribed compression method, and then stored in the memory 170. The buffer memory 140 is a volatile memory that provides a work area for various types of data processing and may be configured as a DRAM (Dynamic Random Access Memory or SDRAM). The encoder / decoder 160 and the digital signal processor 150 Provides a work area for data processing.

The digital signal processor 150 controls the operation of the entire digital camera related to image capturing and processing of image data by executing a program recorded in an EEPROM 155 (Electronically Erasable and Programmable ROM).

The touch screen 180 is divided into a resistance film, an optical film, an electrostatic capacitance, an ultrasonic wave, and a pressure according to an implementation principle and an operation method. For example, the touch screen 180 may extend in a direction crossing the horizontal axis and the vertical axis, And a sensing signal representing a touch position of the user is generated based on coordinate values based on the horizontal axis and the vertical axis by sensing an electrical contact portion of the mesh pattern according to the touch pressure of the user.

The digital signal processor 150 determines which region of the touch screen 180 the touch position recognized from the sensing signal corresponds to, and recognizes a specific command of the user according to the determination result.

In the embodiment of FIG. 1, a digital camera for setting a zoom function using an optical lens has been described. However, the present invention is not limited thereto, but may be applied to both a digital zoom type camera and a combined system of optical zoom and digital zoom.

FIG. 2 illustrates a touch screen 180 that displays a photographing button and a zoom slider according to an embodiment of the present invention.

Referring to FIG. 2, the touch screen displays a photographing button 181 and a zoom slider 182 in an arbitrary area of the touch screen. In addition, setting and execution icons for various shooting can be displayed.

The photographing button 181 is formed in an arbitrary area in the frame of the touch screen, and the pressed state and the released state are displayed differently according to the touch sensing. For example, as shown in Fig. 3, in the pressed state (a) and the depressed state (b), different colors may be displayed, or different images may be displayed by putting different images in the shooting buttons. Here, the spaced position is not intended to be inconvenient when the user confirms the image of the subject to be photographed on the touch screen, and thus is not limited numerically.

Also, the photographing button 181 and the zoom slider 182 may be displayed in a semi-transparent state.

On the other hand, when the photographing button 181 is in the depressed state (b) in the pressed state (a), the photographing function of the digital photographing apparatus is performed.

Further, when the pressed state of the photographing button 181 is maintained for a predetermined time, for example, 3 seconds or more, the moving picture photographing function can be performed. When the moving picture photographing function is performed, it displays on the touch screen that the moving picture photographing function is performed as shown in (c) of FIG. In another embodiment, the duration of the pressed state is divided into a plurality of sections, that is, for example, 1 to 3 seconds, 3 to 5 seconds, and 5 seconds or more. In a predetermined first time (1 to 3 seconds) (3 seconds to 5 seconds), or the photographing mode can be changed according to the duration of the pressed state such as the panoramic photographing function during the third time (5 seconds or more) have. The mode setting according to the time and the time is one example, and the present invention is not limited to this, and the designer can freely set the mode and the user can set the mode according to circumstances.

The zoom slider 182 is formed in a part of the touch screen in the form of a slide bar having a shooting button 181 as a center. That is, the shooting button is located at the center of the zoom slide bar, and the shooting button can be moved along the slide bar in the pressed state according to the user's touch.

The photographing button 181 is positioned at the center of the zoom slider 182 in the photographing standby state and the photographing button 181 can be slid to the left and / or right of the zoom slider 182 according to a user's touch. The zoom function is performed correspondingly. Specifically, when the photographing button 181 moves to the left side of the zoom slider 182 as shown in FIG. 4, the zoom-out function is performed. When the photographing button 181 moves to the right side of the zoom slider 182, Function is performed.

The zoom slider 182 is formed extending to the left and right sides of the photographing button 181 in the embodiment of the present invention. However, the present invention is not limited thereto, In this case, a zoom-in function can be performed by sliding the photographing button 181 in an upward direction, and a zoom-out function can be performed when the photographing button 181 is slid in a downward direction, or vice versa.

However, it is preferable to display a zoom-in / zoom-out function corresponding to one end and the other end of the zoom slider 182 so that the user can recognize it. For example, as shown in FIG. 4, the zoom-out can be represented by "-" and the zoom-in by the symbol "+".

5, when the photographing button 181 is moved from the pressed state to the one end of the zoom slider 182, when the pressed state is released, the zoom-in and zoom-out functions are stopped and the photographing button 181 is moved to the zoom slider 182 , And enters a shooting standby state. In the photographing stand-by state, the digital photographing apparatus performs an auto-focusing function as occasion demands. That is, when the photographing button 181 is pressed, the camera is put in the pressed state without moving on the zoom slider, and is photographed after being autofocused when the photographing function is performed.

When the photographing is finished, a photographing standby state or a step of performing a predetermined procedure is executed again.

In another embodiment, when the photographing button 181 is moved from the pressed state to the one end of the zoom slider 182 and then the pressed state is released, the photographing button 181 is not returned to the center, , It is also possible to make the photographing possible in the same zoom setting state.

In some cases, when the photographing button 181 is moved from the pressed state to the one end of the zoom slider 182, when the pressed state is released, the setting of returning to the center of the photographing button 181, And can provide a function that can be customized.

If a zoom function is performed even with a slight movement of the photographing button 181, a malfunction may occur. Therefore, a malfunction prevention section is provided, and when the photographing button moves within the malfunction prevention section, it is regarded as no movement and the zoom in and zoom out functions are performed .

At this time, the malfunction prevention section includes a certain distance c extending from the center line o of the photographing button 181 to one end and the other end of the zoom slider 182, as shown in Fig. That is, the center line o of the photographing button 181 ignores the movement in the area (c), the center line o performs a zoom-out function in the areas (a) and (b) and performs zooming in the area (e).

A zoom-in function is performed at the maximum speed when the photographing button 181 is located in the section (a), and a zoom-out function is performed at the maximum speed when the photographing button 181 is positioned in the section (e). Performing the zoom in function at the maximum speed means enlarging the image faster by narrowing the angle of view larger or faster within the change of the angle of view. In addition, performing the zoom-out function at the maximum speed means that the image is shrunk faster by widening the angle of view larger or faster than the angle of view.

When the photographing button 181 is moved to the right side of the zoom slider 182 to perform a zooming function, the zooming-in speed is increased at a certain rate at a position deviated from the area (c) The zooming speed can be gradually adjusted so that the zooming-in speed becomes 1x. In the case of the left side of the photographing button 181, the zooming speed can be adjusted in the same manner.

When the zoom-in or zoom-out is performed as described above, the size of the image is changed, so that the magnification of the zoom, the angle of view, and the like are displayed on the screen so that the user can easily recognize the magnification on the screen.

7 is a flowchart illustrating a digital photographing method according to an embodiment of the present invention.

In response to a user's touch input, a photographing button and a zoom slide bar are displayed on the touch screen (S710). Wherein the photographing screen is displayed in a position on an arbitrary area of the touch screen, and the zoom slider displays a slide bar shape centered on the photographing button.

And enters a photographing standby state for waiting for touch detection of the photographing button displayed on the touch screen (S720).

If the touch of the photographing button is detected from the touch screen, it is recognized as a pressed state, and it is determined whether the pressed state is not less than a predetermined time (S725). When the pressed state is within a predetermined time, that is, when the shooting button is touched for a time shorter than a predetermined time, a picture is taken (S735).

It is detected whether the photographing button is moved to one end or the other end of the zoom slide bar (S730). When the touch is detected, the photographing button is displayed differently from the waiting state in order to display the pressed state of the photographing button. For example, the color of the photographing button may be changed, the shape of the photographing button may be modified, or a text or an image may be inserted into the photographing button.

When the photographing button detects the movement of the zoom slide bar to one end or the other end, the zoom function is performed (S740). For example, as shown in FIG. 8, a photographing button and a zoom slider are displayed at the bottom of the touch screen. When the photographing button is moved to the left indicated by a symbol "-" on the zoom slider, the zoom-out function is performed and the subject is distant. Further, when the photographing button is moved to the right indicated by the symbol "+" on the zoom slider, the zoom-in function is performed and the subject approaches. Although an example of the zoom function is described with respect to the optical zoom, the zoom function also includes an optical zoom, a digital zoom, or a zoom function using a combination thereof.

After the step S730, when the touch of the photographing button is released, the photographing is performed (S750).

If the photographing button is moved to one end or the other end of the zoom slide bar after the photographing, the photographing button is returned to the center of the zoom slide bar in step S760. In some cases this step may be omitted.

If no movement of the photographing button is detected in step S730, it is checked whether the pressed state of the photographing button lasts for a predetermined additional time, for example, 3 seconds or more (S735). The additional time means a time taken after the zoom function is executed.

If the pressed state of the photographing button continues for a predetermined time or more, a moving picture photographing function is performed (S755).

If the pressed state of the photographing button does not exceed the predetermined time, photographing is performed (S750).

When the photographing function is performed, the subject image is captured in accordance with the set photographing conditions, and the photographing operation is ended by making the file into an arbitrary shape through signal processing.

In the meantime, the digital photography method of the present invention can be implemented by a software program and recorded on a computer-readable recording medium.

For example, the recording medium may be a hard disk, a flash memory, a RAM, a ROM, or the like embedded in each reproduction apparatus, or an external optical disk such as a CD-R or a CD-RW, a compact flash card, a smart media, have.

In this case, a program recorded on a computer-readable recording medium may include a step of displaying a photographing screen including a photographing button and a zooming slide bar on a touch screen in response to a user's touch input, The method comprising the steps of: entering a waiting state when the photographing button is pressed; confirming whether the pressed state duration is within a predetermined time when a touch to the photographing button is detected; Detecting whether the zoom slide bar is moved to one end or the other end of the zoom slide bar, performing a zoom function according to the movement of the shooting button, and releasing the pressed state of the shooting button according to the touch detection And a step of performing photographing.

The foregoing description is merely illustrative of the present invention, and various modifications may be made by those skilled in the art without departing from the spirit of the present invention. Accordingly, the embodiments disclosed in the specification of the present invention are not intended to limit the present invention. The scope of the present invention should be construed according to the following claims, and all the techniques within the scope of equivalents should be construed as being included in the scope of the present invention.

110: Optical unit 111: Driver
112: zoom lens 114: shutter
116: aperture 118: focus lens
120: Imaging element 130: Analog front end circuit (AFE circuit)
140: buffer memory 150: digital signal processor
155: EEPROM 160: Encoder / decoder
170: memory 180: touch screen
181: Shooting button 182: Zoom slider

Claims (11)

A shooting button displayed in an arbitrary area of the touch screen, and
A zoom slider in a slide bar shape centered on the photographing button is formed on a part of the touch screen,
And a digital camera. The digital photographing apparatus according to claim 1, wherein the photographing button is displayed in a pressed state and a released state according to touch detection. The apparatus of claim 2, wherein when the shooting button is pressed, the shooting button is slidable on the zoom slider,
A zoom-out function when the photographing button moves to one end of the zoom slider, and a zoom-in function when the photographing button is moved to the other end of the zoom slider. The digital photographing apparatus according to claim 2 or 3, wherein the photographing function is performed when the photographing button is in the pressed state and then the pressed state is released. The digital photographing apparatus according to claim 3, wherein, when the photographing button is in the pressed state and then the pressed state is released, the photographing button returns to the center of the zoom slider. The digital photographing apparatus according to claim 4, wherein a moving picture photographing function is performed when a pressing state of the photographing button has continued for a predetermined time or more. Displaying a photographing screen including a photographing button and a zoom slide bar on a touch screen according to a user's touch input;
Entering a standby state for waiting for touch detection of the photographing button;
Determining whether the pressed state duration is within a predetermined time when a touch of the shooting button is detected;
Detecting whether the photographing button is moved to one end or the other end of the zoom slide bar and performing a zoom function according to the movement of the photographing button when the pressed state continues for the predetermined time or longer; And
When the press state of the photographing button is released according to the touch detection,
Lt; / RTI > 8. The method according to claim 7, wherein, after performing the photographing,
When the photographing button is moved to one end or the other end of the zoom slide bar, returning the photographing button to the center of the zoom slide bar
Further comprising: The method as claimed in claim 7,
And when the movement of the photographing button is not detected for the predetermined additional time or longer, the moving picture photographing function is performed. The digital camera according to claim 7, wherein the photographing screen is displayed at a position spaced apart from the center of the touch screen, and the zoom slider is displayed in a slide bar shape centered on the photographing button Way. A computer-readable recording medium having recorded thereon a program for executing the digital photographing method according to any one of claims 7 to 10.

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