KR20060095207A - Method for re-encoding divx video file in a dvd player - Google Patents

Abstract

The present invention relates to a method for re-encoding a DivX file in a DVD player capable of playing multimedia information recorded in a DivX (Digital Video eXpress) format. That is, in the present invention, in playing a DivX file of various formats in a DVD player capable of playing DivX files, when the DivX file is played, the resolution and frame rate of the DivX file to be played back and decoded are checked, and the QPEL in the DivX file is checked. If the DivX file cannot be played back by checking whether the GMC compression format is included, inaccurate information such as QPEL and GMC is deleted and the resolution and frame rate are re-encoded to meet the chipset specifications. Enables you to play DivX files in various formats.

Description

Re-encoding DIV video files {METHOD FOR RE-ENCODING DIVX VIDEO FILE IN A DVD PLAYER}

1 is a schematic block diagram of a DVD player capable of playing DivX files according to an embodiment of the present invention;

2 is a flowchart illustrating a process for re-encoding DivX files in a DVD player according to an exemplary embodiment of the present invention.

<Brief description of the major symbols in the drawings>

100: optical disk 102: pickup portion

104: SLM 106: SPM

108: motor drive unit 110: RF unit

112: servo section 114: DSP section

116: Micom 118: Video Decoder

120: audio decoder 122: key input unit

124: memory unit 126: video re-encoding unit

The present invention relates to a DVD player, and more particularly, to a DivX file in a DVD player capable of playing multimedia information recorded in the DivX (Digital Video eXpress) format as well as moving picture multimedia information recorded in the MPEG-2 format. The present invention relates to a re-encoding playback method of.

In general, a digital versatile disk (DVD) player refers to a device that displays and reproduces data recorded on an optical disc such as a DVD or HD-DVD, in which a higher density of data is recorded than a CD. Basically, it is compressed in MPEG-2 format which is international standard.

Meanwhile, as the demand for multimedia information including video through the Internet is rapidly increasing, various multimedia formats, such as MPEG-4 and DivX, are being used. In addition to these various multimedia formats, corresponding codecs have also been diversified. For example, recently, DivX-formatted multimedia contents have been widely spread over the Internet to surpass DVD titles, and video multimedia files of various formats have been spread.

Therefore, the current DVD is equipped with a codec that can play not only DVD titles but also data in multimedia formats such as MPEG-4, DivX, etc., so that users can play various multimedia data using the DVD player.

However, in the conventional DVD player capable of playing DivX, the DivX file is not yet completely played. In playing the DivX file, it is judged whether or not it can be played according to the chip spec of the MPEG IC, which is a microcomputer. In other words, the conventional MPEG IC has a problem that if the resolution is 720 * 576 or higher or the encoded DivX file contains QPEL or GMC information, the playback is not smooth and the screen is broken or the sound is interrupted. In addition, even if the MPEG IC itself is improved for this purpose, there is a limit to playing a file having a resolution of 720 * 576 pixels.

Accordingly, an object of the present invention is to provide a re-encoding playback method of a DivX file in a DVD player capable of playing multimedia information recorded in a DivX (Digital Video eXpress) format.

The present invention for achieving the above object is a method for re-encoding a DivX file in a DVD device capable of playing DivX files, comprising the steps of: (a) checking the type of loading disc to be played; and (b) Checking the resolution and frame rate of the DivX file in the case of a DivX disc; and (c) a reference range capable of playing the DivX file decoded from the disc normally if the resolution and frame rate of the DivX file do not fall within the normal playable range. And re-encoding at the resolution and the frame rate of (d), and (d) decoding and reproducing the re-encoded DivX file.

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

1 is a schematic block diagram of a DVD playback apparatus capable of playing a DivX file to which an embodiment of the present invention is applied.

Hereinafter, referring to FIG. 1, each sub operation of the DVD player will be described. First, the pick-up 102 includes an actuator for focusing and tracking, and includes a DVD, The recording signal is read from the optical disc 100 such as a CD or DivX.

The sled motor (SLM) 104 moves the pickup section 102 to an arbitrary position on the optical disc 100. Spindle motor (SPM) 106 drives the optical disk 100 in rotation. The RF unit 110 converts the high frequency optical signal output from the pickup unit 102 into an electrical binary signal by shaping the filter, extracts the servo signal and modulated data to perform the servo, and applies it to the servo unit 112. .

The digital signal processor (DSP) unit 114 reconstructs the binary signal into original compressed data using its own clock phase-locked to a binary signal applied from the RF unit 110, and then divides the binary signal into data types and connects the video to the rear end. A video decoder 118 and an audio decoder 120 are respectively applied.

The video decoder 118 and the audio decoder 120 decode the compressed video / audio data applied from the DSP unit 114 and convert the decoded video / audio data into an image and an audio signal. The video re-encoding unit 126 re-encodes the DivX file applied under the control of the microcomputer 116 into a file having a resolution and format information that can be reproduced by a DVD player capable of playing the DivX file.

The motor drive unit 108 applies the appropriate driving voltage to the spindle motor 106 under the control of the servo unit 112 to drive the optical disc 100 in rotation, and to the thread motor 104. The pickup unit 102 is moved by applying an appropriate driving voltage. The servo unit 112 receives information necessary for servo control from the RF unit 110 and controls the driving of the motor drive unit 108 to perform stable servo.

The memory unit 124 stores various operation program data necessary for the operation of the microcomputer 116, and temporarily stores data generated according to the operation of the microcomputer 116. The key input unit 122 includes a plurality of numeric keys and function keys for controlling the operation of each sub-unit of the DVD system. The key input unit 122 generates and applies the corresponding key data to the micom 116 when a key is input from the user.

The microcomputer 116 controls the overall operation of the DVD player capable of playing DivX files and controls the DSP unit 114, the RF unit 110, and the pick-up unit 102 according to a user's key input. Data is reproduced from the optical disc 100 such as DVD or DivX.

In addition, according to an embodiment of the present invention, the microcomputer 116 checks whether or not the video resolution and frame rate that can be played when playing a DivX file, and checks whether the encoded file includes the QPEL or GMC compression format. It determines whether or not it is possible, and if the resolution and frame rate are satisfied and QPEL and GMC format information is not included, playback is performed immediately. If the above conditions are not satisfied, playback is performed through the video re-encoding unit 126. The DivX file is re-encoded as a file having a resolution and format information that can be reproduced by the DVD player.

2 is a flowchart illustrating a re-encoding process of a DivX file in a DVD player capable of playing a DivX file according to an exemplary embodiment of the present invention. Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. 1 and 2.

First, when the disc is loaded in the disc loader, the microcomputer 116 proceeds to step S202 and determines the type of the loaded disc in step S200. In this case, if the loaded disc is a disc such as a normal DVD or a CD, the microcomputer 116 proceeds from step S204 to step S206 to play the loaded disc in the normal DVD mode.

On the other hand, if the disc loaded in the loader is a DivX disc of MPEG-4 format, the microcomputer 116 proceeds from step S204 to step S208 to determine whether the video resolution of the DivX file is 720 * 480 or less. Check it.

In this case, if the video resolution of the DivX file is 720 * 480 or less, the microcomputer 116 proceeds to step S210 to check whether the frame rate of the DivX file is 30 frames / sec or less. If the frame rate of the DivX file is 30 frames or more, the microcomputer 116 proceeds to step S220 and transmits the video to the video re-encoding unit 126 to re-encode the DivX file.

On the other hand, if the frame rate of the DivX file is 30 frames or less, the microcomputer 116 proceeds to step S212 to determine whether the encoded DivX file includes the QPEL and GMC compression formats. If the QPEL and GMC compression formats are not included in the DivX file, the microcomputer 116 plays the DivX file through the video decoder in step S214. However, if the QPEL and GMC compression formats are included in the DivX file, the microcomputer 116 proceeds to step S220 and transmits the video to the video re-encoding unit 126 for re-encoding the DivX file.

On the other hand, if the video resolution of the DivX file decoded from the disk is 720 * 480 or more in the video resolution check of the DivX file in step S208, the microcomputer 116 proceeds to step S216 and the video resolution of the DivX file is 720 *. Check whether it is 576 or less.

If the video resolution of the DivX file is 720 * 576 or more, the microcomputer 116 proceeds to step S220 and transmits the video to the video re-encoding unit 126 for re-encoding the DivX file. On the other hand, if the video resolution of the DivX file is 720 * 576 or less, the microcomputer 116 proceeds from step S216 to step S218 to check whether the frame rate of the DivX file is 25 frames or less. If the frame rate of the DivX file is 25 frames or more as a result of the frame rate test, the microcomputer 116 proceeds to step S220 and transmits the video to the video re-encoding unit 126 for re-encoding the DivX file.

On the contrary, if the frame rate of the DivX file is 25 frames or less, the microcomputer 116 proceeds from step S216 to step S218 and proceeds to step S212 to QPEL and GMC in the encoded DivX file. Check if a compressed format is included.

At this time, if the QPEL and GMC compression formats are not included in the DivX file, the microcomputer plays the DivX file through the video decoder in step S214. In contrast, if the QPEL and GMC compression formats are included in the DivX file, the microcomputer ( 116 proceeds to step S220 and transmits to the video re-encoding unit 126 for re-encoding the DivX file.

If it is checked that the re-encoding of the DivX file decoded from the disc is necessary as described above, the microcomputer 116 may reproduce the DivX file through the video re-encoding unit 126 in step S222, and the resolution may be reproduced. Re-encode the DivX file with the format information. The DivX file re-encoded through the video re-encoding unit 126 as described above is transmitted to the microcomputer 116 again at a predetermined time interval, and the received microcomputer 116 receives the re-encoded DivX file in step S224. Decode to video data. Thereafter, the microcomputer 116 transmits the decoded data to the TV encoder in step S226 and displays it on the TV screen connected to the DVD player in step S228.

As described above, in the present invention, when playing a DivX file of various formats in a DVD player capable of playing DivX files, when the DivX file is played, the resolution and frame rate of the DivX file to be played and decoded are checked, and the DivX file It checks whether my QPEL and GMC compression formats are included, and if the DivX file cannot be played back, deletes incorrect information such as QPEL and GMC, and the resolution and frame rate are specified in the chipset specifications. By re-encoding the DivX file so that it fits in, the DivX file of various formats can be played.

Meanwhile, in the above description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the invention should be defined by the claims rather than by the described embodiments.

As described above, in the present invention, when playing a DivX file of various formats in a DVD player capable of playing a DivX file, when the DivX file is played, the resolution and frame rate of the DivX file to be played and decoded are checked. If the DivX file contains the QPEL and GMC compression formats, if the DivX file cannot be played back, delete the incorrect information such as QPEL and GMC, and set the resolution and frame rate to meet the specifications of the chipset. By re-encoding, there is an advantage in that DivX files of various formats can be played back.

Claims (4)

DivX file A method for re-encoding DivX video files on a playable DVD device. (a) checking the type of loading disc required for playback; (b) checking the resolution and frame rate of the DivX file if the loaded disk is a DivX disk; (c) re-encoding the DivX file decoded from the disc at the resolution and frame rate of the normal playable reference range when the resolution and frame rate of the DivX file do not fall within the normal playable reference range; (d) decoding and playing the re-encoded DivX file again Re-encoding a DivX file containing a. The method of claim 1, (E) checking whether the DivX file includes QPEL or GMC format information when the resolution and frame rate of the DivX file belong to a standard playable range; (f) re-encoding the DivX file to delete the QPEL or GMC format information if the DivX file contains QPEL or GMC format information in the DivX file and normal playback of the DivX file is impossible; (g) decoding and playing back the re-encoded DivX file from which the QPEL or GMC format information has been deleted; Re-encoding a DivX file, characterized in that it further comprises. The method of claim 1, In the step (c), the DivX file resolution and frame rate of the normal playable reference range is 720 * 480 or less, 30 frames / sec or less re-encoding method of the DivX file. The method of claim 1, In the step (c), the DivX file resolution and frame rate of the normal playable reference range is 720 * 576 or less, 25 frames / sec or less re-encoding method of the DivX file.

Images