KR100729063B1 - Method for coding divx file in optical disc player - Google Patents

Abstract

The present invention relates to a method for playing a DivX file in an optical disc player. When an arbitrary DivX file is selected in an optical disc, the codec version is checked in header information of the DivX file, and if the codec version is not a codec version supported by the optical disc player, a re-encoding warning When re-encoding is requested from the user after OSD processing the message, the data per frame of the video / audio information of the DivX file is decompressed, and the decompressed data is temporarily stored on the hard disk, but re-encoded by a codec that can be supported by the optical disk player. In this case, the optical disc player is played until there is no DivX file in the optical disc. According to the present invention, various kinds of moving images recorded on an optical disc such as a DVD can be played without a separate firmware upgrade, thereby increasing the user satisfaction and securing driving stability of the product.

Description

How to play DivX files in an optical disc player {METHOD FOR CODING DIVX FILE IN OPTICAL DISC PLAYER}

1 is a schematic block diagram of an optical disk player for implementing a Divix file playback method according to the present invention;

2 is a flowchart of a process for playing a Divix file in an optical disc player according to a preferred embodiment of the present invention.

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

100: signal detection unit 102: MPEG encoder

104 control unit 106 MPEG decoder

108: video / audio signal output unit 114: OSD unit

116: storage medium

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reproduction technology of an optical disc player. In particular, an optical disc suitable for a reproduction process of a Divx (Digx: Digital Video Express) file recorded on an optical disc, regardless of a codec (coder & decoder) version supported by the player, is provided. A method for playing DivX files in a player.

Recently, thanks to the rapid development of the Internet and information and communication technology, multimedia digitization which converts various audiovisual data of voice and video into digital is rapidly progressing throughout the society. Moreover, such multimedia digitization enables many people to enjoy various multimedia data through the development of band compression technology and the expansion of wired and wireless communication networks such as the Internet.

Recently, a so-called DVD (Digital Versatile Disc) has been introduced as an example of a storage medium in which audio / video content (hereinafter, A / V content) is recorded among these multimedia contents. The content is compressed and can be run from a computer equipped with a DVD player or DVD-ROM.

At this time, the DVD player has a built-in separate application package for decoding and executing the MPEG-1 or MPEG-2 format recorded on the DVD, CDs, VCDs and the like compatible with the DVD, and the general video terminal, S-video video terminal An output port, such as a component terminal, may be provided to display audio and video to the outside through a TV and a speaker.

In the case of a computer equipped with a DVD-ROM, the A / V content of the DVD is displayed to the outside through a predetermined operating system, a decoder, and a video player stored in a hard disk driver (HDD). Inserting a compatible CD or VCD into the DVD-ROM will plug and play into the operating system by the BIOS, and MPEG-1 or MPEG-2 format and A / V content by the decoder and operating system. Is decompressed and transformed to generate an A / V data stream.

A / V data is displayed externally through computer monitors and speakers such as CRT (Cathode-ray tube) or LCD.

In this case, the decoder is usually provided to the user as a separate software along with the DVD-ROM and installed in a hard disk drive of the computer, and the video playback program is also provided as a separate software to be installed and executed on the operating system. For reference, in order to execute such a DVD, a north bridge or a MCH and a south bridge or an ICH may be included to adjust a processing speed between a plurality of components communicated with each other in a computer.

Meanwhile, in recent years, A / V content is not only MPEG-1 or MPEG-2, but also MPEG-4 (including MPEG-3), MPEG-7, Divix, Windows Media Audio / Video (WMA / WMV), and Advanced Audio Coding ( Compressed in various forms such as Advanced Audio Coding (AAC) format. To do this, you can purchase a DVD player with a built-in decoder for each, or a decoder that supports the format on your computer's hard disk drive. And a video playback program must be built in.

However, the DVD player with a separate decoder is very expensive, and it can be economically expensive. Even if a computer has a program that supports the format, there are various compression methods in the DivX file. Therefore, it is practically impossible to accept and decode all of them.

In addition, in order to accommodate the new version of the codec, the user may request a firmware upgrade of the player, which not only adds an economic burden to the user but also has a high probability of failing to update, thereby preventing a set operation failure. Can cause.

The present invention is to solve the problems of the prior art described above and to overcome the technical limitations, when playing a Divix file that is not supported by the optical disc player, by re-encoding the Divix file into a file format that can be played in the player, the user satisfaction An object of the present invention is to provide a method for playing a DivX file in an optical disc player that can increase the number of files.

According to a preferred embodiment of the present invention for achieving the above object, as a method of playing a Divix file in an optical disk player loaded with an optical disk containing a plurality of Divix files, when the arbitrary Divix file is selected from the optical disk header information of the Divix file Determining a codec version in the step, determining whether the codec version is a codec version supported by the optical disc player, and if the codec version is not a codec version supported by the optical disc player, the codec supported by the optical disc player Playing the optical disc player until there is no DivX file in the optical disc while re-encoding, and if a re-encoding is requested from the user after OSD processing the re-encoding warning message, the video / audio of the DivX file A method of playing a Divix file in an optical disc player, the method comprising: decompressing data per frame of information, and temporarily storing the decompressed data on a hard disk.

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

1 is a schematic block diagram of an optical disk player, for example, a DVD player, for implementing a method for playing a Divix file according to the present invention. The key input unit 12, the signal detector 100, the MPEG encoder 102, and the controller are shown in FIG. 104, an MPEG decoder 106, a video / audio signal output unit 108, an OSD unit 110, and a storage medium 112.

The key input unit 12 is a key input means formed on the front panel of the remote controller or the DVD player, and generates a key signal corresponding to the user's input action and transmits the key signal to the DVD player.

The signal detector 100 detects video file information, for example, a DivX file, which is read from the optical disc 10, for example, a DVD, and provides the MPEG encoder 102 with the detected information. The Divix file detected through the signal detector 100 is driven by the optical pickup unit of the DVD player, the servo controller (not shown), and the like, and the implementation process of the technique is common in the technical field of the present invention. If you have it can be easily understood, a detailed description will be omitted.

The MPEG encoder 102 converts a file provided through the signal detector 100 into a digital stream using coding techniques such as variable length coding, DCT, quantization, and motion compensation, which are well known in the art.

The controller 104 determines the information of the file provided through the MPEG encoder 102 and determines whether the file can be played in the DVD player. Determination of whether to play is possible by checking the codec version in the header information of the Divix file. If the codec version is not supported by the DVD player, the controller 104 re-encodes the DivX file with the codec supported by the DVD player. If the file can be reproduced, the control unit 104 provides the file to the MPEG decoder 106.

In addition, the controller 104 controls the OSD unit 110 to externally display an operation status message, a warning message, a user input message, and the like of the DVD player. The video file is controlled to be stored in the storage medium 112.

The MPEG decoder 106 may control a file provided directly from the MPEG encoder 102 or a file stored in the storage medium 112 and read out, that is, a compression-encoded file, under the control of the controller 104. Reconstructs the original signal before encoding using decoding techniques such as variable length decoding, inverse DCT, inverse quantization, and motion compensation, and the restored file information is transmitted to the video / audio signal output unit 108 together with the audio signal. .

The video / audio signal output unit 108 performs a function of switching and combining the decoded file provided from the MPEG decoder 106 to be output to the TV (not shown) as a video and audio signal.

On the other hand, the OSD unit 110 serves to display the operation status messages, warning messages, user input messages, etc. of the DVD player to the outside through the external display window of the DVD player under the control of the controller 104.

Next, the storage medium 112 is, for example, a hard disk drive (HDD), and is used as a means for storing a moving image file, for example, a Divix file, provided from the control unit 104.

Hereinafter, the above-described configuration will be described in detail with reference to a flowchart of FIG. 2 attached to a process for playing a DivX file in a DVD player according to a preferred embodiment of the present invention.

First, as in step S200, when a DVD containing a plurality of DivX files is loaded, the controller 104 proceeds to Step S202 and determines whether a random DivX file is selected from the DVD through the key input unit 12. .

If a random DivX file is selected in the DVD, the control unit 104 proceeds to step S204 to check the codec version in the header information of the selected DivX file.

After that, the controller 104 proceeds to step S206 to determine whether the codec version of the selected DivX file is a codec version supported by the DVD player.

If it is determined in step S206 that the codec version is supported by the DVD player, the controller 104 proceeds to step S208 to process the selected DivX file for reproduction. This playback process proceeds until the end of playback of the loaded DVD (S210).

If the codec version is not a codec version supported by the DVD player, the controller 104 proceeds to step S212 and displays a re-encoding warning message through the OSD unit 110. To control. Such a re-encoding warning message may be, for example, the phrase "Could not play the file. Do you want to re-encode it?"

Thereafter, when re-encoding is requested from the user (S214), that is, when a confirmation button is input through the key input unit 12, the control unit 104 proceeds to step S216 and the data per frame of the video / audio information of the Divix file. Uncompress

In this case, the decompressed data is temporarily stored in the storage medium 112. The reason for temporarily storing the decompressed data in the storage medium 112 is to preserve the original data when the re-encoding process described later fails. In other words, when re-encoding is performed, the original data is no longer recoverable, so the re-encoding fails.

Meanwhile, in step S220, the controller drives the DVD player to play while re-encoding the DivX file with a codec supported by the DVD player. This playback process is maintained until there is no DivX file in the DVD, and if the DivX file no longer exists in the DVD (S222), the controller 104 proceeds to step S224 to stop playback of the DVD player. End this procedure.

As described above, the present invention is characterized in that the DVD player can be played stably even when there is no codec for playing the DivX file.

According to the present invention, according to the present invention, various kinds of moving images recorded on an optical disc such as a DVD can be played without a separate firmware upgrade, thereby increasing the user satisfaction and securing driving stability of the product.

As mentioned above, although this invention was demonstrated concretely based on the Example, this invention is not limited to this Example, Of course, various changes are possible within the scope of the following Claim.

Claims (4)

delete delete As a method of playing a Divix file in an optical disc player loaded with an optical disc containing a plurality of Divix files, Checking a codec version from header information of the DivX file when an arbitrary DivX file is selected on the optical disc; Determining whether the codec version is a codec version supported by the optical disc player; If the codec version is not a codec version supported by the optical disc player, re-encoding with a codec supported by the optical disc player, and playing the optical disc player until there is no DivX file in the optical disc; Decompressing data per frame of the video / audio information of the DivX file when a re-encoding is requested from the user after OSD processing the re-encoding warning message; Temporarily storing the decompressed data on a hard disk Divix file playback method in the optical disk player comprising a. delete

Images