KR20040079163A - Recording/reproducing apparatus capable of adjusting size of still image and control method thereof - Google Patents

Abstract

PURPOSE: A method for controlling a screen size of a still image and a controlling method thereof are provided to adaptively scale up a screen aspect ratio and/or a screen size of a still image based on a screen size of a display area, to display the still image having a proper screen aspect ratio and/or a proper screen size, thereby supplying more natural visual effects. CONSTITUTION: If a still image display request signal is received(S810), a main controller reads an image signal for a selected still image file from an HDD(S820). The main controller confirms a screen aspect ratio and/or a screen size of the read image signal(S830). The main controller decodes the read image signal, and controls an MPEG decoder to adaptively scale the screen aspect ratio and/or the screen size of the read image signal based on a screen aspect ratio of a display area(S840). The main controller processes a play list screen where a scaled still image is displayed such that the screen is listed up on TV(S850).

Description

Recording / reproducing apparatus capable of adjusting size of still image and control method

The present invention relates to a recording and reproducing apparatus and a control method thereof, and more particularly, to a recording and reproducing apparatus capable of adaptively adjusting the screen size of a still image when the image signal recorded in the recording apparatus is implemented as a still image. It is about.

There are many apparatuses for reproducing video / audio signals, such as a video cassette recorder (hereinafter referred to as "VCR") and a digital video disk player (hereinafter referred to as "DVDP").

Recently, a combination recording / reproducing apparatus for recording and reproducing a video / audio signal by combining a hard disk drive (hereinafter referred to as “HDD”) and a DVDP has been introduced.

HDDs are used as video / audio signal recording devices because they allow random access, a method of directly accessing desired data using addresses, and a high data transfer speed and high capacity recording.

Data that can be implemented by the video / audio signal can be largely divided into video data, still picture data, and sound data. Each data is filed and recorded in a physically divided area of the HDD, and is listed and displayed on the screen as necessary.

On the other hand, a video signal recorded on a recording device such as an HDD is displayed as a still image, and the image signal is reduced and displayed so as to fit in the display areas a to c of a predetermined size as shown in FIGS. 1A to 1C. . Such a thumbnail is performed through an encoding process so that the original video signal fits the size of the display area in order to quickly search / manage a large amount of video signals.

The display area of FIGS. 1A to 1C have a 4: 3 screen aspect ratio, and the screen aspect ratio and / or the size of the display area of the display area vary depending on the number of display areas and the number of pixels of the display device. .

On the other hand, when a video signal recorded in a conventional recording and reproducing apparatus is implemented as thumbnails, the aspect ratio and / or screen size of still images to be reproduced in the display area are often different, and between still images to be reproduced and the display area. The case where the screen aspect ratio and / or screen size is also different occurs. Here, the screen size means the number of pixels.

For example, when thumbnails are implemented using image signals recorded at different screen sizes in a recording / playback apparatus, still images having different sizes are displayed in a display area having a 4: 3 aspect ratio as shown in FIGS. 1A to 1C. Is displayed. 1A and 1B illustrate that when a still image having a screen aspect ratio other than 4: 3 is displayed in the display area, FIG. 1C shows a screen aspect ratio of a still image and a screen aspect ratio of 4: 3, but the screen size of the still image is the same. It is a figure which shows the case where predetermined part (shown by the diagonal line) is not displayed in a display area by exceeding a display area.

Therefore, when a thumbnail is implemented using a conventional recording and reproducing apparatus, the screen aspect ratio and / or screen size of a still image embodied as a thumbnail is inconsistent with the screen aspect ratio and / or screen size of a display area displayed on a television. The image may not be displayed in the upper, lower, left, and right areas of the display area, or some of the still images may not be displayed.

SUMMARY OF THE INVENTION The present invention provides a recording / playback apparatus capable of adaptively adjusting the screen size of a still image based on the screen size of the predetermined display region when displaying the still image file in the predetermined display region. The control method is provided.

1A to 1C are diagrams showing still images displayed differently in a display area according to a screen size of a conventional video signal;

2 is a diagram illustrating a display system to which a recording / playback apparatus capable of adjusting a screen size of a still image according to an exemplary embodiment of the present invention is applied;

3 is a block diagram schematically showing the recording and reproducing apparatus shown in FIG. 2;

4 is a plan view schematically illustrating the remote controller of FIG. 2;

FIG. 5 is a view illustrating a submenu subordinate to a photo album among initial menu guide list screens displayed on a display device when a menu key of FIG. 4 is selected;

FIG. 6 is a diagram illustrating a still image file list recorded on the HDD when the HDD play list menu of FIG. 5 is selected;

FIG. 7 is a diagram illustrating a play list screen in which a still image of a still image file selected from among a still image file list recorded in the HDD of FIG. 6 is displayed;

8 is a flowchart illustrating a control method for adjusting the screen size of a still image according to FIG. 3;

9A to 9C are enlarged views of a predetermined display area shown in FIG. 7.

Description of the main parts of the drawing

200: recording and playback device 210: input / output terminal

241: MPEG encoder 255: disc loading unit

260: main control unit 263: MPEG decoder

500: Menu guide list screen 600, 700: Play list screen

In the recording and reproducing apparatus for achieving the above technical problem, recording at least one video signal received from the outside according to the present invention to a recording device, and reproduces the recorded video signal to a display device, wherein An interface unit for receiving a user selection signal from an external input device capable of selecting a function supported by the recording / playback device, a decoder for decoding a video signal recorded in the recording device into a playable signal and scaling to a predetermined screen size; and When a play list screen display request signal for displaying a video signal recorded on the recording device as the still image is received from the external input device, the still image is displayed on a display area of the play list screen, and the screen aspect ratio of the display area is displayed. And / or the screen size of the recorded video signal based on the screen size. And a main controller for adaptively scaling the video signal to control the decoder to display the still image.

More specifically, the main control unit according to the screen size of the video signal so that any one of the horizontal length and the vertical length of the still image is the same as the length opposite to any one of the horizontal length and the vertical length of the display area. The decoder controls the video signal to be scaled at a predetermined ratio, and to scale the length of the still image other than the one of the horizontal length and the vertical length by the predetermined ratio.

Preferably, when the horizontal length of the display area is larger than the vertical length of the display area, the main control unit has a vertical length of the video signal when the vertical length of the video signal is greater than a predetermined ratio by the horizontal length of the video signal. The decoder is controlled to scale equal to the vertical length of the display area.

The aspect ratio of the display area may be any one of 4: 3 and 16: 9 aspect ratios previously selected by the external display input device.

On the other hand, to achieve the above technical problem, the control of the recording and reproducing apparatus for recording at least one video signal received from the outside according to the present invention to the recording device, and reproduces the recorded video signal to provide to the display device In the method, it is determined whether or not to receive a display request signal for displaying the video signal recorded in the recording device as a still image on a display area of a play list screen from an external input device capable of selecting a function supported by the recording and playback device. And if the display request signal is received, adaptively scaling the video signal according to the screen size of the video signal based on the screen aspect ratio and / or screen size of the display area. Outputting the table, and displaying the play list screen on which the scaled still image is displayed. It includes the step of providing to the device.

In more detail, the scaling may be performed such that any one of a horizontal length and a vertical length of the video signal is equal to a length opposite to any one of the horizontal length and the vertical length of the display area according to the screen size of the video signal. Scale at a predetermined ratio, but length other than the one of the horizontal length and the vertical length of the video signal is also scaled by the predetermined ratio.

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

2 is a diagram schematically showing a display system to which a recording / playback apparatus according to the present invention is applied.

Referring to the figure, the recording and reproducing apparatus 200 is connected to the television 100 which is a display apparatus by means of a transmission cable 150. The recording and reproducing apparatus 200 according to the present invention is a device capable of recording and reproducing a file composed of video / audio signals to a recording apparatus.

The recording and reproducing apparatus 200 processes a signal received from the remote controller 300 which is an external input device and transmits display information to the television 100. Here, the external input device may be applied to other input devices such as a wired keyboard as well as the remote controller 300 for transmitting a wireless signal such as infrared rays.

The recording and reproducing apparatus 200 includes images from at least one of image sources such as cable broadcasting, satellite broadcasting, local cable, digital broadcast source (DBS), internet, camcorder, disk player, set top box, and the like. Built to receive sound signals.

3 is a block diagram schematically showing the recording and reproducing apparatus shown in FIG.

Examples of the recording / playback apparatus 200 include a VCR, a DVDP, a VCR / DVDP combination system, an HDD / DVDP combination system, and the like. In the present invention, an HDD / DVDP combination system will be described as an embodiment. The HDD / DVDP combo combines the HDD and the DVDP into one, and has a function of recording and playing a video file, a still image file, a sound file, etc., which are made of a video / audio signal.

Referring to FIG. 3, the recording / reproducing apparatus 200 includes an input / output terminal unit 210, a tuner 221, a switching unit 223, an input / output control unit 225, an MPEG encoder 241, and an HDD 251. And a disk loading unit 255 and a main control unit 260.

The input / output terminal unit 210 is configured to receive signals generated from various video signal sources and to output signals received from the HDD 251 applied to the received signal or the large capacity first recording device.

The input / output terminal unit 210 includes a super video input terminal (S_V IN) 211 and an output terminal (S_V OUT) 212, an RF input terminal (RF IN) 213, and an output terminal (RF OUT) 214. , A line video / audio input terminal (LINE V_IN, LINE A_IN) 215, an output terminal (LINE V_OUT, LINE A_OUT) 216, and a digital audio signal output terminal (SPDIF) (Serial Parallel Digital Interface) 217 are provided.

Herein, the input terminal or the output terminal will be described in detail with respect to an element having a different input / output relationship and the same signal format.

The super video input terminal 211 is a terminal for receiving the digital luminance signal Y and the color difference signals Cr and Cb, which are connected to a digital camcorder, a DVD player, and a set top box.

The super video output terminal 212 is a terminal for transmitting the digital luminance signal Y and the color difference signals Cr and Cb to the television 100.

The RF input terminal 213 is a terminal for receiving an over-the-air broadcast signal and is usually connected to an antenna.

The RF output terminal 214 is a terminal for transmitting a broadcast signal tuned by the tuner 221 described later to the outside, and is normally connected to the television 100.

The line video / audio input terminal 215 is a terminal for receiving an analog signal mixed with a luminance signal Y and a color difference signal. The line video / audio input terminal 215 is used in connection with a camcorder, a DVD player, a set-top box, etc., which supports the output of an analog video signal. .

The line video / audio output terminal 216 is a terminal for transmitting an analog signal in which the luminance signal Y and the color difference signals Cb and Cr are mixed. The line video / audio output terminal 216 is connected to the television 100 supporting the display of the analog image signal. .

The digital audio output terminal 217 is a terminal for outputting the digital audio signal transmitted from the main controller 260 to the outside.

The tuner 221 allows a broadcast signal of a channel requested by the input / output controller 225 controlled by the main controller 260 to be received through the RF input terminal 213.

The switching unit 223 may be controlled by the input / output control unit 225 to selectively connect the input / output terminals connected to the switching unit 223.

The video decoder 231 is controlled by the main controller 260 to decode and output a signal received through the super video input terminal 211 or the switching unit 223.

The audio A / D converter 233 converts an analog audio signal input through the switching unit 223 into a digital signal and outputs the digital signal to the MPEG encoder 241.

The MPEG encoder 241 is controlled by the main controller 260 to encode and record the audio signal output from the audio A / D converter 233 and the video signal output from the video decoder 231 using a predetermined compression format. The target data is stored in the HDD 251, which is a mass storage device. Preferably, the MPEG encoder 241 encodes the video signal by MPEG-2 compression.

The first SDRAM 243 is a memory used by the MPEG encoder 241 for encoding processing.

The data movement path providing unit 257 provides a movement path of data recorded on the HDD 251 and data recorded on the disc inserted in the disk loading unit 255 applied as the recording medium loading unit. That is, the data movement path providing unit 257 records the data recorded on the disk of the disk loading unit 255 on the HDD 251 or writes the data recorded on the HDD 251 of the disk loading unit 255. When recording on a compact disk (CD) and / or a digital video disk (DVD), or when data encoded by the MPEG encoder 241 is recorded on the HDD 251, a movement path of each data is stored in the main controller 260. Provided by the control of.

The disc loading unit 255 is built in the recording / reproducing apparatus 200. The disc loading unit 255 may be a DVD player which is loaded to reproduce data recorded on a second recording apparatus, for example, CD and / or DVD. The disc loading unit 255 is controlled by the main control unit 260 to perform recording and / or reproducing of video / audio signals on a DVD or a CD.

The light receiver 271 is applied as an interface and receives a user selection / operation signal transmitted from the remote controller 300, which is an external input device, and outputs the signal to the main controller 260.

The main controller 260 processes the user manipulation signal received through the light receiver 271 and controls each element.

The main controller 260 is a single chip type IC in which a central processing unit (CPU) 261 and an MPEG decoder 263 for decoding a compressed signal in an MPEG method are combined. The MPEG decoder 263 may be separated into a separate chip and connected to the main controller 260.

In the flash memory 265, various programs related to the performance of the main controller 260 are recorded. The flash memory 265 is provided with a graphical user interface (GUI) storage unit 265a.

The GUI storage unit 265a stores a program for performing GUI screen processing. The GUI screen is a graphic screen for user convenience, such as a menu guide list screen 500 and a play list screen 600 and 700 described later. . The GUI screen is provided through an output terminal, for example, a line video / audio output terminal 216 connected to the television 100.

The second SDRAM 267 is a predetermined buffer in which a signal decoded by the MPEG decoder 263 is temporarily stored.

The audio D / A converter 235 converts the digital audio signal output from the MPEG decoder 263 into an analog audio signal and outputs the analog audio signal to the switching unit 223.

The video encoder 237 encodes a video signal output from the video decoder 231 or the MPEG decoder 263 and outputs the encoded video signal to the switching unit 223.

The input / output controller 225 is controlled by the main controller 260 to control the tuner 221 and the switching unit 223.

In the recording and reproducing apparatus 200, the main controller 260 loads and processes an operating program mounted in the flash memory 265 for various functions corresponding to signals received from the remote controller 300 through the light receiving unit 271. .

Hereinafter, the method of controlling the storage device of the main controller according to the key selection of the remote controller will be described in detail with reference to the menu guide list screen processing.

First, with reference to FIG. 4, in which a remote controller 300 which is an external input device of the recording / playback apparatus 200 of the present invention is described, the elements related to the GUI screen operation will be described.

In the drawing, reference numeral 311 denotes a menu key used to instruct loading of the GUI screen, and portions indicated by 313, 315, 317, and 319 are classified on the GUI screen and used to indicate movement of the cursor with respect to the listed menu. Up, down arrow keys. Reference numeral 321 denotes an enter key used to select a menu, and 323 denotes a return key used to return to the previous screen from the current screen.

The remaining keys are known keys and specific keys for operating the television 100 and the recording / playback apparatus 200, etc., and the functions of the keys can be easily understood through the characters displayed adjacent to the keys. Even if the detailed description is omitted, the detailed description is omitted since it does not interfere with the understanding of the present invention.

Hereinafter, when at least one still image file is recorded in a recording device such as a DVD inserted into the HDD 251 or the disk loading unit 255, control for adjusting the screen size of the still image according to the preferred embodiment of the present invention. The method will be described in more detail with respect to GUI screen processing.

FIG. 5 is a diagram illustrating a submenu subordinate to a photo album menu of an initial menu guide list screen displayed on a display device when a menu key of FIG. 4 is selected.

When the menu key 311 selection signal of the remote controller 300 is received by the light receiving unit 271, the main controller 260 executes a program stored in the GUI storage unit 265a to display an initial menu guide list screen on the television 100. Provide (not shown).

Four main menus are displayed on the initial menu guide list screen (not shown) displayed on the television 100. Here, when the "photo album" menu is selected by operating the remote controller 300, as shown in FIG. 5, a menu guide list screen 500 for displaying a submenu subordinate to the "photo album" menu is provided.

The "HDD Playlist" menu of the submenu shown in FIG. 5 is a menu for providing a list of still image files recorded on the HDD 251 among still image files related to the execution of the "photo album". Similarly, the "CD Playlist" shown in FIG. 5 is a menu for providing a list of still picture files recorded on the CD.

By operating the remote controller 300 and selecting the "HDD Play list" menu or the "CD Play list" menu of the sub-menu shown in Figure 5, as shown in Figure 6 The play list screen 600 is displayed. In the present embodiment, a case where the "HDD Playlist" menu is selected will be described as an example. That is, on the play list screen 600 shown in FIG. 6, a list of a plurality of still image files recorded on the HDD 251 is displayed.

Referring to FIG. 6, two subfolders ('Flower' and 'River') and a plurality of still image files are recorded in a file related to the execution of the "photo album" in the "Root" folder of the HDD 251. Among these, the still image file to be played is selected by operating the remote controller 300, and the selected still image file can be known by the '√' mark checked next to the still image file name.

Here, when a display request signal for the selected still image file, that is, a playback command is applied, the television screen as shown in FIG. 7 is listed up on the television 100. FIG. 7 is a diagram illustrating a play list screen on which a still image of a still image file selected from among still image files recorded on the HDD of FIG. 6 is displayed.

Referring to FIG. 7, the play list screen 700 has eight display areas a through h on which still images are displayed, and the still images selected on the screen of FIG. 6 are displayed in each display area a through h. . That is, when a play command for the selected still image file is applied, the play list screen 700 in which thumbnails are implemented is listed up, and the screen size of the still image displayed in the display areas a to h is displayed in the display area ( coincident or inconsistent with the size of a to h).

As shown in the display areas c to f, when the screen sizes of each other coincide with each other, the screen aspect ratio of the still image recorded on the HDD 251 and the screen aspect ratio preset for the display areas c to f coincide with each other. Say that. That is, it is a case where the video signal for the still picture file is scaled to be equal to the screen size of the display areas c to f.

On the other hand, as shown in the display areas a and b, when the screen sizes of each other do not match, the screen aspect ratio of the still image recorded on the HDD 251 and the screen aspect ratio preset for the display areas a and b are displayed. In this case, the video signal for the still picture file is adaptively scaled according to the screen size of the video signal based on the screen aspect ratio and / or the screen size of the display areas a and b.

In the display areas g and h, the still image is not displayed.

In addition, it is preferable that the number of display areas a to h displayed on the play list screen 700 is not limited to eight, and the screen aspect ratio and / or screen size of the display area is limited to the operation of the external input device 300. The initial value selected or set in the production process can be applied. In the present invention, a case where a 4: 3 screen aspect ratio is applied to each of the eight display areas is described as an example.

Scaling of still images for thumbnail implementation will be described in more detail with reference to FIG. 8.

FIG. 8 is a flowchart illustrating a control method for adjusting screen size of a still image according to FIG. 3.

2 to 8, first, in order to implement thumbnails using still image files recorded on the HDD 251, the play list screen 600 as shown in FIG. 6 is displayed by operating the remote controller 300. Be sure to

Then, after the still image file for thumbnail implementation is selected by the operation of the remote controller 300 on the play list screen 600 of FIG. 6, when the still image display request signal is received (S810), the main controller 260 is selected. The video signal for the still picture file is read from the HDD 251 (S820).

When operation S820 is performed, the main controller 260 checks the number of pixels of the read image signal, that is, the screen aspect ratio and / or the screen size (S830). When the screen aspect ratio and / or screen size of the read video signal is confirmed, the main controller 260 decodes the read video signal, and based on the screen aspect ratio of the display area, the screen aspect ratio and / or screen of the read video signal. The MPEG decoder 263 is controlled to adaptively scale the size (S840).

In detail, the main controller 260 determines that any one of the horizontal length and vertical length of the still image (for example, the vertical length of the still image) is determined by the horizontal length of the display area according to the (pixel number) screen size of the image signal. The MPEG decoder 263 is controlled to scale the video signal by a predetermined ratio so as to be equal to the length (that is, the vertical length of the display area) opposite to any one of the vertical lengths (for example, the vertical length of the still image). At this time, the main controller 260 controls the MPEG decoder 263 to scale a length other than the horizontal length and the vertical length of the still image (that is, the horizontal length of the still image) by a predetermined ratio.

When the aspect ratio of the television 100 or the display areas a to h is selected to be 4: 3 by the operation of the remote controller 300, the scaling of the MPEG decoder 263 will be described as an example. First, as shown in FIG. 1A, when a video signal having a vertical length larger than a horizontal length by a predetermined ratio is recorded on the HDD 251, the display area a in which the vertical length of the video signal corresponds to the vertical length of the video signal. Scaling is equal to the vertical length, but also the horizontal length of the video signal by the scaling ratio. Accordingly, the still image displayed as shown in FIG. 1A is implemented as shown in the display area (a) of FIG. 7 or FIG. 9A. 9A is an enlarged view of the display area a. When the vertical length and the horizontal length of the video signal recorded on the HDD 251 are the same, it is preferable to scale so that the vertical length of the video signal and the vertical length of the display area are the same.

Similarly, as shown in FIG. 1B, when a video signal having a horizontal length larger than a vertical length by a predetermined ratio is recorded on the HDD 251, the horizontal length of the displayed video signal is horizontally opposite to the display area b. Scale to equal the length, but also scale the vertical length of the video signal by the scaled ratio. Accordingly, the still image displayed as shown in FIG. 1B is implemented as shown in the display area (b) of FIG. 7 or FIG. 9B. 9B is an enlarged view of the display area b.

In addition, as shown in FIG. 1C, when a video signal having the same aspect ratio as the display area c but different screen sizes are recorded on the HDD 251, the same screen size as the screen size of the display area c is shown. Scale the video signal to have. As a result, the still image displayed as shown in FIG. 1 is reduced and expressed as shown in the display area (c) of FIG. 7 or 9c.

When step S840 is performed, the main controller 260 processes the play list screen 700 on which the scaled still image is displayed as listed on the television 100 (S850).

On the other hand, in the above-described recording and playback apparatus 200 according to the present invention, the still image reproduced when the thumbnail is implemented is recorded not only on the HDD 251 but also on a recording apparatus such as a CD loaded by the disc loading unit 255. Still images can also be reproduced as described above.

In addition, it is preferable that the screen aspect ratio and / or screen size of the still image reproduced in the thumbnail implementation is adaptively scaled according to the screen aspect ratio and / or screen size of the television 100.

While the above has been shown and described with respect to preferred embodiments of the present invention, the present invention is not limited to the specific embodiments described above, it is usually in the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

As described so far, according to the recording / playback apparatus capable of controlling the aspect ratio of the still image, and a control method thereof, when a thumbnail is implemented to display a still image file in a predetermined display area, the still image is displayed based on the screen size of the display area. It is possible to adaptively scale the screen aspect ratio and / or the screen size. Accordingly, by displaying a still image having a screen aspect ratio and / or a screen size suitable for the display area, a thumbnail that provides a more natural visual effect can be realized.

Claims (7)

A recording and reproducing apparatus for recording at least one video signal received from the outside into a recording apparatus, and reproducing the recorded video signal to provide to the display apparatus. An interface unit for receiving a user selection signal from an external input device capable of selecting a function supported by the recording / playback apparatus; A decoder which decodes the video signal recorded in the recording apparatus into a playable signal and scales it to a predetermined screen size; And When a play list screen display request signal for displaying a video signal recorded on the recording device as the still image is received from the external input device, the still image is displayed on a display area of the play list screen, and the screen aspect ratio of the display area is displayed. And / or a main controller for controlling the decoder to display the still image by adaptively scaling the video signal according to the screen size of the recorded video signal based on the screen size. Playback device. The method of claim 1, The main controller predetermines the video signal such that any one of a horizontal length and a vertical length of the still image is equal to a length opposite to any one of the horizontal length and the vertical length of the display area according to the screen size of the video signal. And scaling the ratio, and controlling the decoder to scale the length of any one of the horizontal length and the vertical length of the still image by the predetermined ratio. The method of claim 2, When the horizontal length of the display area is greater than the vertical length of the display area, the main control unit may determine that the vertical length of the video signal is greater than the vertical length of the display area by more than a predetermined ratio. And the decoder is controlled to scale equal to the vertical length. The method of claim 1, And the aspect ratio of the display area of the display area is one of 4: 3 and 16: 9 aspect ratios previously selected by the external display input device. A control method of a recording / playback apparatus for recording at least one video signal received from the outside into a recording apparatus, and reproducing the recorded video signal to provide to a display apparatus. Determining whether or not to receive a display request signal for displaying the video signal recorded in the recording device as a still image on a display area of a play list screen from an external input device capable of selecting a function supported by the recording and playback device; If it is determined that the display request signal is received, outputting the still image by adaptively scaling the video signal according to the screen size of the video signal based on a screen aspect ratio and / or a screen size of the display area; ; And And providing the play list screen on which the scaled still image is displayed to the display device. The method of claim 5, In the scaling step, one of the horizontal length and the vertical length of the video signal is scaled at a predetermined ratio to be equal to the length opposite to the one of the horizontal length and the vertical length of the display area according to the screen size of the video signal. And scaling the length of any one of the horizontal length and the vertical length of the video signal by the predetermined ratio. The method of claim 5, And a screen aspect ratio of the display area is any one of 4: 3 and 16: 9 aspect ratios previously selected by the external display input device.