KR20080100630A - Method of controlling digital image processing apparatus wherein still image is efficiently searched from moving image - Google Patents

Abstract

A method for controlling a digital image processing apparatus is provided to search a static image a user wants in a moving picture reproduction mode. When a stop signal is generated by a user while reproducing a moving picture, the first static image at a time when reproduction is stopped, static images of previous frames of the first static image, and static images of next frames of the first static image are sequentially displayed according to a signal of a user. A main screen of the first static image is reduced and located in the first region(61) at a time when reproduction is stopped.

Description

Method of controlling digital image processing apparatus wherein still image is efficiently searched from moving image}

1 is a perspective view showing the front and top appearance of a digital camera as a digital image processing apparatus to which the control method according to the present invention is applied.

FIG. 2 is a rear view illustrating a rear shape of the digital camera of FIG. 1.

3 is a diagram illustrating the overall configuration of the digital camera of FIG. 1.

4 is a flow chart showing the main algorithm of the digital camera processor of FIG.

FIG. 5 is a flowchart illustrating an algorithm when video playback is performed in the corresponding mode performing step of FIG. 4.

FIG. 6 is a diagram illustrating a screen structure of a display panel in a state where step S511 of FIG. 5 is performed.

FIG. 7 is a diagram illustrating a screen structure of a display panel in a step S523 of FIG. 5.

 <Explanation of symbols for the main parts of the drawings>

1 ... digital camera, 11 ... self-timer lamp,

12 ... flash, 13 ... shutter release button,

15 ... function buttons, 16 ... ASR mode buttons,

17 ... power button, 19 ... flash-light sensor, 20 ... lens section, 22 ... camera-status lamp,

23 ... special-effect buttons, 24 ... camera strap,

25 ... earphone connection, MIC ... microphone,

SP ... speakers, 35 ... display panels,

36 ... + /-buttons, 39 ... Zoom / 9 split / volume buttons,

42 ... play / print button, 43 ... mode button,

OPS ... optical system, OEC ... photoelectric converter, M _Z ... zoom motor, M _F ... focus motor,

M _A ... aperture motor, 501 ... analog-to-digital converter,

502 timing circuit, 503 real time clock,

504 ... DRAM, 505 ... EEPROM, 506 ... memory card interface, 507 ... digital camera processor, 508 ... RS232C interface, 509 ... video filter, 21a ... USB connection, 21b ... RS232C connection, 21c ... video output, 510 ... lens driver, 511 ... flash controller, 512 ... microcontroller, INP ... user input, LAMP ... light emitter, 513 ... audio processor, 514 ... LCD driver, 62 ... flash memory, 28 ... play / stop button,

29 jog dial, 61 first zone,

62, 63, and 64 ... second region, 71 to 74 ... third region.

The present invention relates to a control method of a digital image processing apparatus, and more particularly, to a control method of a digital image processing apparatus having a moving picture reproduction mode.

As a typical digital image processing apparatus, for example, a digital camera of US Pat. No. 6,097,431 (name of the method and system for reviewing and navigating among images on an image capture unit) is mentioned.

In the moving picture reproducing mode of the conventional digital image processing apparatus as described above, the user can retrieve any one still picture from the moving picture and store it in the still picture file. To this end, the user should generate a still signal while playing a video to find a desired still image. Here, since there is a time difference between when the user generates a still signal and when the playback of the video is stopped, the user must perform a large number of operations to find a desired still image.

An object of the present invention is to provide a control method of a digital image processing apparatus that enables a user to easily and quickly search for a desired still image in a video playback mode.

The present invention for achieving the above object is a control method of a digital image processing apparatus having a video playback mode. Here, when a still signal is generated by the user while playing a video, the first still image, the still images of previous frames of the first still image, and the next still image after the first still image is reproduced. Still images of the frames are displayed in order according to the signal by the user.

According to the control method of the digital image processing apparatus of the present invention, a still image, a still image of previous frames, and a still image of subsequent frames are displayed in order in accordance with a signal from a user when playback is stopped. . Accordingly, the user can easily and quickly search for the desired still image.

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

Referring to FIG. 1, in front and above of a digital camera 1 as a digital image processing apparatus according to the present invention, a self-timer lamp 11, a flash 12, a shutter release button 13, and an ASR (Advanced Shake) are provided. Reduction mode button 16, power button 17, lens unit 20, microphone MIC, and speaker SP.

In the self-timer mode, the self-timer lamp 11 operates for a set time from the time when the shutter release button 13 is pressed to the time at which the image starts to be captured. In addition, the self-timer lamp 11 generates auxiliary light according to the user's selection.

The ASR mode button 16 is used to compensate for camera shake. The ASR mode button 16 is also used as a lock button. For example, when the ASR mode button 16 is pressed for less than 1 second, the image stabilization function is performed, and when the ASR mode button 16 is pressed for 1 second or more, the lock function in the playback mode is performed.

The shutter release button 13 has a two-stage structure. That is, when the user operates the wide-angle zoom button 39 _W and the tele-zoom button 39 _T , and presses the shutter release button 13 only one step, the SH1 signal from the shutter release button 13 is turned on. And the second stage is pressed, the SH2 signal from the shutter release button 13 is turned on. In the still image shooting mode and the moving image shooting mode, the image is captured after the SH2 signal is turned on. In the continuous-shooting mode, images are captured continuously while the SH1 signal is on.

2, behind the digital camera 1 according to the present invention, the function buttons 15, the camera-status lamp 22, the special-effects button 23, the camera strap 24, the earphone Connector 25, display panel 35, +/- button 36, zoom / 9 split / volume button 39, playback / printer button 42, mode button 43, jog dial ( 29), and a play / stop button 28.

The function buttons 15 are used by the user to perform specific functions of the digital camera 1, are used as direction-shift buttons of the activation cursor on the menu screen of the display panel 35, and are played back in the playback mode. It is used to switch files and recording media.

The camera-state lamp 22 is used to show various operating states of the camera. The special-effect button 23 is used to set special effects on the image to be photographed. The +/- button 36 is used to adjust the shutter speed for night scene photography and the like.

The zoom / 9split / volume button 39 is used to perform a zooming operation in shooting or playback mode, to display nine pictures in a single playback mode, or to adjust the volume of audio. Used for

The play / printer button 42 is used for switching between the play mode and the preview mode or for direct output to the printer.

The mode button 43 is used to select a PMP (Portable Media Player) mode or various shooting modes.

The jog dial 29 is used to display a series of menus such as index images.

The play / stop button 28 is used to generate a play signal or a stop signal in the video play mode.

3 shows the overall configuration of the digital camera 1 of FIG. Referring to Figures 1 to 3, the overall configuration and operation of the digital camera 1 of Figure 1 will be described.

The optical system OPS including the lens unit and the 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 zoom / split / volume button 39 included in the user input unit INP in the preview mode or the video shooting mode, a corresponding signal is input to the microcontroller 512. Accordingly, as the microcontroller 512 controls the lens driver 510, the zoom motor M _Z is driven to move the zoom lens.

Meanwhile, in the auto focusing mode, the focus motor M _F is driven by the main controller embedded in the digital camera processor 507 controlling the driving unit 510 through the microcontroller 512. As a result, the focus lens is moved, and in this process, the position of the focus lens where the high frequency component of the image signal is the largest, for example, the number of driving steps of the focus motor M _F is set. Reference numeral M _A denotes a motor for driving an aperture (not shown).

A photoelectric conversion unit (OEC) of a charge coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS) converts light from an optical system (OPS) into an electrical analog signal. Here, the digital camera processor 507 controls the timing circuit 502 to control the operations of the photoelectric converter OEC and the analog-digital converter 501. The CDS-ADC (Correlation Double Sampler and Analog-to-Digital Converter) element 501 as an analog-to-digital converter processes the analog signal from the photoelectric converter (OEC), removes the high frequency noise, and adjusts the amplitude. Then convert it to a digital signal.

The real time clock 503 provides time information to the digital camera processor 507. The digital camera processor 507 processes the digital signal from the CDS-ADC element 501 to generate a digital video signal classified into luminance and chroma signals.

The self-timer lamp 11 and the camera-status lamp 22, etc., are provided in the light emitting part LAMP driven by the microcontroller 512 according to control signals from the digital camera processor 507 incorporating the main controller. This includes.

The user input unit INP includes a shutter release button 13, function buttons 15, an ASR mode button 16, a power button 17, a special-effect button 23, a +/- button 36, A zoom / 9 split / volume button 39, a play / printer button 42, a mode button 43, a jog dial 29, a play / stop button 28, and the like.

A digital video signal from the digital camera processor 507 is temporarily stored in a DRAM (Dynamic Random Access Memory) 504. The EEPROM (Electrically Erasable and Programmable Read Only Memory) 505 stores algorithms necessary for the operation of the digital camera processor 507. In the memory card interface (MCI) 506, a user's memory card is detached. The flash memory FM stores setting data necessary for the operation of the digital camera processor 507. In the memory card interface 506, a plurality of memory cards are detached as recording media of a user.

The digital image signal from the digital camera processor 507 is input to the LCD driver 514, whereby an image is displayed on the display panel 35.

In the interface unit 21, the digital video signal from the digital camera processor 507 can be transmitted by serial communication via a universal serial bus (USB) connection 21a or an RS232C interface 508 and its connection 21b. It may be transmitted as a video signal through the video filter 509 and the video output unit 21c.

The audio processor 513 outputs the audio signal from the microphone MIC to the digital camera processor 507 or the speaker SP, and outputs the audio signal from the digital camera processor 507 to the speaker SP.

On the other hand, the microcontroller 512 drives the flash 12 by controlling the operation of the flash controller 511 according to the signal from the flash-light amount sensor 19.

4 shows the main algorithm of the digital camera processor 507 of FIG. A main algorithm of the digital camera processor 507 of FIG. 3 will be described with reference to FIGS. 1 to 4 as follows.

When operating power is applied to the digital camera 1, the digital camera processor 507 executes initialization (step S1). When this initialization step S1 is executed, the digital camera processor 507 performs a preview mode (step S2). In this preview mode, the input image is displayed on the display panel 35.

Next, when the SH1 signal, which is the first-stage signal from the shutter release button 13, is On (step S3), the digital camera processor 507 performs a shooting mode (step S4).

Next, when signals corresponding to the setting mode are input among the input signals from the user input unit INP (step S5), the setting mode for setting the operating conditions according to the input signals from the user input unit INP is performed. (Step S6).

On the other hand, if no end signal is generated (step S7), the digital camera processor 507 determines whether a conversion signal to any other mode has been generated (step S8).

If no conversion signal to any other mode is generated in step S8, the digital camera processor 507 repeats step S2 and subsequent steps. If a conversion signal to any other mode, for example, a playback mode, is generated in step S8, the digital camera processor 507 repeatedly performs the step S2 and subsequent steps after performing the mode (step S9). do.

FIG. 5 shows an algorithm when video playback is performed in the corresponding mode performing step (S9) of FIG. 4. 6 illustrates a screen structure of the display panel 35 in a state where step S511 of FIG. 5 is performed. FIG. 7 illustrates a screen structure of the display panel 35 in a state where step S523 of FIG. 5 is performed. 6 and 7, reference numeral CS denotes an activation cursor, 62, 63, and 64 denote a second region, and 71 to 74 denote a third region.

Referring to FIGS. 2, 3, and 5 to 7, the algorithm in the case where video playback is performed in the corresponding mode performing step (S9) of FIG. 4 will be described step by step.

If any video file is selected in the playback mode, and a playback signal is generated by the user pressing the play / stop button 28 (step S501), the digital camera processor 507 performs video playback (step S503). ).

If a stop signal is generated by the user pressing the play / stop button 28 in the middle of step S503 (step S505), the digital camera processor 507 stops playback of the moving image (step S507).

Next, the digital camera processor 507 reduces the main screen of the still image at the time when reproduction is stopped and places it in the first area 61 (step S509).

Further, the digital camera processor 507 reduces the second still image by reducing the first still image of the main screen, the second still image of the previous frame of the first still image, and the third still image of the next frame of the first still image, respectively. Displayed at (62, 63, and 64) (step S511). For example, the first still image is displayed in the middle region 63, the second still image in the upper region 62, and the third still image in the lower region 64. That is, when step S511 is performed for the first time after the stop signal is generated (step S505), the center area 63 of the first still image and the second areas 62, 63, and 64 displayed in the first area 61 are displayed. The first still image displayed at) is the same.

Next, when a jog dial signal is generated as the user turns the jog dial (step S513), the digital camera processor 507 sequentially moves new still images to the second area 62, 63, and 64 in order. Display (step S515). For example, if the user rotates the jog dial up once, the images of the previous three frames of the still image displayed in the upper region 63 of the second regions 62, 63, and 64 are reduced to Displayed in two areas 62, 63, and 64. On the contrary, when the user rotates the jog dial downward once, the images of the next three frames of the still image displayed in the lower area 64 of the second area 62, 63, and 64 are reduced to the second. Displayed in areas 62, 63, and 64.

Next, when a direction signal is generated by the user pressing the function buttons 15 (step S517), the digital camera processor 507 causes the second area according to the generated direction signal, for example, the upper signal or the lower signal. The activation cursor CS at 62, 63, and 64 is moved (step S519).

Next, when a confirmation signal is generated by the user pressing the center button among the function buttons 15 (step S521), the digital camera processor 507 activates the activation cursor (in the second area 62, 63, and 64). The selected still image where the CS is located is copied and displayed in the third areas 71 to 74 (step S523).

Next, when a storage signal is generated by the user pressing the shutter release button (13 in FIG. 1) (step S525), the digital camera processor 507 causes the third area 71 to 74 according to the file format selected by the user. ) Is stored in a recording medium, for example, a memory card (step S527).

In performing step S527, a guide message in a file format may be displayed. For example, a message may be displayed to select one of a Joint Photographic Experts Group (JPEG) file of a single still image, a JPEG file of composite still images, and a Graphics Interchange Format (GIF) file.

All of the above steps S501 to S527 are repeatedly performed until the end signal is input (step S529).

As described above, according to the control method of the digital image processing apparatus according to the present invention, a still image, a still image of previous frames, and a next frame of still images at a point in time at which playback of a moving image is stopped are transmitted to the user. Are displayed in order according to the signal. Accordingly, the user can quickly and easily search for a desired still image from the video.

The present invention is not limited to the above embodiments, but may be modified and improved by those skilled in the art within the spirit and scope of the invention as defined in the claims.

Claims (6)

In the control method of the digital image processing apparatus having a video playback mode, If a still signal is generated by the user while playing a video, the first still image, the still images of previous frames of the first still image, and the next frame of the first still image are detected at the time when playback is stopped. A control method of a digital image processing apparatus for displaying images in order according to a signal from a user. The method of claim 1, And a main screen of the first still image is reduced and positioned in the first area when the reproduction is stopped. The method of claim 2, And still images of previous frames of the first still image, and / or still images of next frames of the first still image, respectively, being reduced and displayed in a second area. The method of claim 3, And controlling at least one still image selected by a user among the still images displayed in the second region to be copied and displayed in the third region. The method of claim 4, wherein And when a storage signal generated by the user is generated, at least one still image in the third area is stored according to a file format selected by the user. In the control method of the digital image processing apparatus having a video playback mode, If a still signal generated by the user is generated while the moving image is being played, the first still image, the second still image of the previous frame of the first still image, and the next frame of the first still image when the playback is stopped. Displaying a third still image; And And displaying images of previous frames of the second still image or images of subsequent frames of the third still image according to a signal from a user.

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