KR100708197B1 - Audio / Video Playback Device Using Flexible Screen - Google Patents

Abstract

Disclosed are a portable audio / video signal reproducing apparatus and method using a flexible screen. The present invention distinguishes the audio mode and the AV mode by detecting the attachment and detachment of the detachable unit, the detachable unit that folds and unfolds the flexible screen by attaching and detaching the main body of the system, and distinguishing the audio mode and the AV mode according to the mode. It includes a system main unit to set the information of the signal to be reproduced.

Description

Apparatus for reproducing audio / video using flexible screen}

1 shows an example of a portable audio player and a portable AV player.

2A and 3A are front views showing an example of the portable AV playback apparatus according to the present invention, and FIGS. 2B and 3B are side views showing an example of the portable AV playback apparatus according to the present invention.

4 is a block diagram of a portable AV playback apparatus according to an embodiment of the present invention.

5 is a flowchart illustrating a method of operating a portable AV playback apparatus according to an embodiment of the present invention.

The present invention relates to a portable audio / video playback system, and more particularly, to a portable audio / video signal playback apparatus and method using a flexible screen.

 In general, a portable AV player includes an ability to play multimedia contents such as a personal media player (PMP), a personal video player (PVR), a portable media center (PMC), and the like to provide a color screen. Speak portable device. In contrast, a portable audio player refers to a device that plays compressed audio files such as MP3 files or audio CDs. Recently, a flash memory or a hard disk drive is used as a storage medium. Widely used.

1 shows an example of a portable audio player and a portable AV player. In Fig. 1, (a) shows a portable audio player, and (b) shows a portable AV player.

As shown in Fig. 1A, the portable audio playback apparatus 10 includes an operation key 16 for inputting a user's operation command, and a display window 12 for displaying selection and playback information of a file to be played back. In general, the size of the display window 12 is generally less than 2 inches (Liquid Crystal Display) to reduce the size of the product. In addition, the audio file shared on the Web can be downloaded and used through a PC or the like.

The portable audio player 10 is connected to a PC or the like through a USB (Universal Serial Bus) port 14 to share audio files on the Web or compressed audio files stored in the PC (MP3, WMA, etc.). Download the file, and display the audio file list on the display window 12. When the user selects an audio file to be played using the operation key 16, the user plays the selected file, and outputs an audio signal of the file to a headphone or a speaker through an output terminal. The progress state and related information are displayed on the display window 12. In addition, when playback is stopped by the user, the audio file list is displayed again on the display window 12. In the case of a product having a lyrics support function, the lyrics of the corresponding music may be sequentially displayed on the display window 12. FIG.

On the other hand, the portable AV player 20 plays compressed A / V files, such as Divx or WMV files, as shown in FIG. 1 (b). HDD is mainly used as a storage medium.

The portable A / V playback apparatus 20 includes a plurality of operation keys 25a, 25b, 25c for inputting user information, and a display window 22 for displaying a menu of an AV file and actually playing a video file. The display window 22 typically employs a 3 inch or larger LCD display screen for minimal video resolution.

The portable AV player 20 is connected to a PC or the like via a USB port 24 to download and use compressed AV files (Divix, WMW, MPEG) that are shared or sold on the web. Display a list of files. When the user selects the desired AV file by using the operation keys 25a, 25b, and 25c, the selected file is played and displayed on the display window 22, and the audio signal is output to the headphone or speaker through the output terminal. By selecting, it is possible to display the progress state and related information of the AV file being played back on the display window 22. When playback is stopped by the user, the AV file list is displayed on the display window 22 again. When playing back an audio file, it operates in the same way as a portable audio player.

However, currently available portable audio playback devices can play only compressed audio files. Some products can display still images such as JPEG, but there are limitations on the size of the displayed screen. Therefore, image confirmation is inconvenient. In addition, most portable AV playback devices have audio playback functions such as MP3 as well as video file playback. However, when a user actually uses the product, it is used to play audio files rather than video playback. More situation.

Therefore, when a portable AV playback apparatus having an increased size or weight of the overall product is used only for the reproduction of an audio file due to the size of the display window or the like, the portability is not excellent. In addition, since the portable AV playback apparatus needs to drive a large display screen and the like, the power consumption is relatively high, and thus the driving time is not long under limited power conditions using a battery or the like.

SUMMARY OF THE INVENTION The present invention has been made in an effort to provide a portable audio / video playback device that maximizes portability and playback time by adjusting an area of a screen to be displayed according to an AV playback mode used by a user by a detachable unit.

Another object of the present invention is to provide a method of operating a portable audio / video playback device using a flexible screen.

In order to solve the above technical problem, the present invention provides a portable AV playback system,

A detachable unit attached to the main body of the system to fold and unfold the flexible screen by combining and detaching;

It is characterized in that it comprises a system body for detecting the coupling and detachment of the detachable unit to distinguish between the audio mode and the AV mode, and set the area of the flexible screen according to the mode to display the information of the reproduced signal.

In order to solve the other technical problem described above, the present invention provides a playback method of a portable AV playback apparatus having a system main body and a detachable unit attached to the main body of the system, and detachable unit for folding and unfolding the flexible screen by combining and detaching.

Fetching the selected audio or AV file;

Checking whether the detachable unit attached to the system body is coupled;

Determining that the detachable unit is in the audio mode when the detachable unit is coupled to the system main body, and setting only a specific area of the screen; and determining the AV mode when the detachable unit is detached from the system main body; do.

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

2A and 3A are front views showing an example of the portable AV playback apparatus according to the present invention, and FIGS. 2B and 3B are side views showing an example of the portable AV playback apparatus according to the present invention.

2A and 3, the AV playback apparatus according to the present invention includes a USB port 202, operation keys 201a, 201b, and 201c such as play, jog, and stop, a system main body, and a display window 209. , A detachable unit 210 having a lock switch (Lock SW). At this time, the display window 209 uses a flexible screen capable of bending. In the AV playback apparatus, the size of the display window 209 is changed by dividing the audio unit and the AV mode according to the user's coupling or detachment of the detachable unit 210 to the system main body. In the audio mode, as illustrated in FIG. 2A, the detachable unit 210 is coupled to the system main body and displays only video information related to audio reproduction in a portion of the screen. In the AV mode, as illustrated in FIG. 3A, the detachable unit 210 is separated from the system main body, and displays video information such as a moving image using the entire area of the screen. Here, the flexible screen displays video information in its unfolded state at its original size.

Referring to the side view of the AV playback apparatus as shown in FIG. 2B, when the user combines the detachable unit 210 as shown in FIG. 2B, the flexible screen is bent and recognized as an audio mode at the same time. 209 is used to display only text information relating to audio reproduction. In addition, as shown in FIG. 3B, when the user detaches the detachable unit 210, the flexible screen is opened and simultaneously recognized in the AV mode. At this time, the entire area of the screen is used as the display window 209 to display video information such as a video. . In addition, the system main body includes a lock switch (SW) to generate an ON / OFF signal every time the coupling unit 210 is coupled to and detached from the detachable unit 210.

4 is a block diagram of a portable AV playback apparatus according to an embodiment of the present invention.

Referring to Fig. 4, the portable AV player includes a system main body 200, a detachable unit 210, and a flexible screen unit 209.

System main body 200, key input unit 201, communication interface unit 202, system control unit 203, storage medium 205, A / V codec unit 204, DAC unit 206a and H / P amplifier unit 207a, and an ADC section 206b and a line amplifier section 207b.

The key input unit 201 includes a plurality of operation keys for operating functions such as play, jog, and stop, and transmits a key signal corresponding to a user's operation command to the system control unit 203.

The communication interface unit 202 provides an interface for downloading or uploading data from a PC or the like. A communication interface provided by the communication interface unit 202 is typically a USB (Universal Serial Bus), which is a flag and play interface between a computer and a peripheral device, but is not necessarily limited thereto, and various communication capable of transmitting and receiving data with an external device. The interface method can be used.

     The system controller 203 controls the overall operation in the system including the A / V codec unit 204, and in particular, determines whether the detachable unit 210 is coupled to output a control signal for determining the display area and the display state of the screen. do. That is, if the lock switch is "ON", the system control unit 203 determines that the audio mode is in a state where the detachable unit is coupled, and outputs the preset screen display area and display state information accordingly, and the lock switch is "off". (OFF) ", it is determined that the detachable unit is in the AV mode in a detached state, and accordingly, the preset screen display area and display state information are output.

The A / V codec unit 204, under the control of the system control unit 203, decodes the compressed AV file stored in the storage medium 205 to generate video and audio data, and displays a screen display area and display. Pass status information. The audio data decoded by the A / V codec unit 204 is processed by the DAC unit 206a and the H / P amplifier unit 207a constituting the sound processing unit. That is, the DAC unit 206a converts the audio data output from the A / V codec unit 204 into an analog signal, and the H / P amplifier unit 207a amplifies the signal output from the DAC unit 206a. Output to the output terminal 211.

In addition, the A / V codec unit 204 encodes an audio signal input from the outside and stores the encoded audio signal in the storage medium 205. That is, the audio signal input through the input terminal 212 is amplified by the line amplifier unit 207b, converted into digital data by the ADC unit 206b, and then compressed by the A / V codec unit 204 and stored in the storage medium. Stored at 205.

The display control unit 208 controls the setting of the display area of the flexible screen unit 209 according to the screen display area and the display state information output from the AV codec unit 204 and decodes the AV codec unit 204 in the setting area. Display the video signal.

The flexible screen unit 209 is a screen capable of bending the screen by the detachable unit 210 and displays a video signal in an area controlled by the display controller 208.

The detachable unit 210 is attached to the system main body 200 to fold and fold the flexible screen unit 209 by combining and detaching.

Whether the detachable unit 210 is coupled to the system main body 200 may be determined by transmitting an on / off signal mechanically or electrically detected by the lock switch provided in the system main body to the system controller 203. .

5 is a flowchart illustrating a method of operating a portable AV playback apparatus according to an embodiment of the present invention.

First, the user's key information is received (step 510). At this time, the selected audio or AV file is extracted according to the user's key information (step 520).

Subsequently, it is checked whether the detachable unit attached to the system body is coupled (step 530).

At this time, if the lock switch is "on", it determines that the audio mode is in the detachable unit coupled state (step 540), and sets only a partial region of the screen, and outputs only text information related to audio reproduction to the partial region (step 550). In addition, if the lock switch is "off", it is determined that the detachable unit is in an AV mode in which the detachable unit is in a detached state, and sets the entire area of the screen (step 560), and outputs a video signal to the entire area (step 570).

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 above, according to the present invention, the area of the displayed screen can be adjusted according to the AV playback mode of the user using the flexible screen. Accordingly, since only a part of the screen needs to be used for audio reproduction, portability is increased by minimizing the size of a product, which is an essential condition of a portable device, and maximizing playback time under limited power conditions by operating only necessary devices.

Claims (5)

In a portable AV playback system, A flexible screen unit displaying signal information output from the system main body and capable of bending a screen; A detachable unit attached to the system main body to fold and unfold the flexible screen by coupling and separating; It detects the coupling state and the disconnection state of the detachable unit to distinguish the audio mode and AV mode, and set the display area on the flexible screen according to the mode and includes a system main unit for outputting the signal information to be reproduced in the flexible screen unit Portable AV playback device characterized in that. The portable AV playback apparatus according to claim 1, wherein the main body includes a lock switch for outputting an on / off signal upon coupling / detaching of the detachable unit.  The method of claim 1, wherein the system body portion A system controller for determining a display area and a display state of a screen by determining whether the detachable unit is coupled; An AV codec unit for decoding the compressed AV file stored under the control of the system controller to generate video and audio data, and to pass the screen display area and display state information; And a display control unit for controlling the setting of the display area according to the screen display area and the display state information output from the AV codec unit and outputting a video signal decoded by the AV codec unit to the setting area. Device. The portable AV playback apparatus of claim 3, wherein the system controller determines an audio mode when the detachable unit is coupled, and determines an AV mode when the detachable unit is detached. A playback method of a portable AV playback apparatus having a system main body and a detachable unit attached to the system main body and folding / unfolding the flexible screen by combining and detaching the system main body, Fetching the selected audio or AV file; Checking whether the detachable unit attached to the system body is coupled; Determining that the detachable unit is in an audio mode when the detachable unit is coupled to the system main body, and setting only a specific area of the flexible screen; and setting the entire area of the flexible screen by determining that the detachable unit is in the AV mode when the detachable unit is detached from the system main body. A playback method of a portable AV player.

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