KR20070066786A - Method for providing file chapter marking and reading by capture in optical disc player - Google Patents

Abstract

A method for marking a file chapter and playing the chapter-marked file according to captures in an optical disc player is provided to allow a user to appreciate a moving picture from a desired scene when playing a moving picture file by automatically marking a caption for the moving picture file such as a DivX(Digital video eXpress) file and an MPEG4(Moving Picture Experts Group 4) file at a user designation interval or an itself basic interval. If a certain moving picture file is loaded(S200), an MPEG(Moving Picture Experts Group) IC judges whether a chapter play command is executed(S202). If the chapter play command is executed, the MPEG IC marks chapters for the moving picture file at a predetermined chapter interval(S204,S206,S208). When a general play command is received, the MPEG IC loads chapter pictures per a chapter interval and successively displays the loaded chapter pictures(S212). If a certain capture picture is selected(S214), the MPEG IC starts play operation from a point corresponding to play time information of the selected capture picture(S216).

Description

FIELD OF PROVIDING FILE CHAPTER MARKING AND READING BY CAPTURE IN OPTICAL DISC PLAYER}

1 is a block diagram of an optical disc player for implementing the method according to the present invention;

2 is a flowchart of a file chapter marking and a capture-by-capture playback process of a chapter marked file of the optical disc player according to the present invention.

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

100: optical pickup section 102: motor drive section

104: MPEG IC 104a: Servo Control

104b: MPEG processor 106: first memory

108: second memory 110: key input unit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disc player, and in particular, chapter marking is performed on files without a chapter function, such as files formatted with DivX (DigX: Digital Video Express), MPEG4, and the like. A playback method of an optical disc player suitable for playback processing of marked files by capture.

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. In addition, 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.

Among these multimedia contents, a so-called DVD (Digital Versatile Disc) was introduced as an example of a storage medium in which audio / video content (hereinafter referred to as A / V content) was recorded, which compresses A / V content to MPEG-2 standard. It can be run from a computer equipped with a DVD player or DVD-ROM.

In general, optical discs such as compact discs (CDs), laser discs (LDs), video compact discs (VCDs), DVDs, and the like are memories that are made so that data such as audio and video are recorded in a predetermined effective area and reproduced therefrom. In addition to being robust as a medium, the recorded data is not easily damaged, and the utilization thereof is gradually increasing because of the advantage of being able to reproduce cleanly without noise using a light beam.

Such an optical disk has a very large disk capacity, so that music and movies can be recorded. In particular, a DVD has a much larger capacity than other optical disks, so that many movies can be recorded at one time. In this manner, the data recorded on the CD or DVD is reproduced through an optical disc reproducing system (for example, a PC or a DVD player) so that the viewer can watch the desired video content.

On the other hand, in such a DVD player, a function of recording and playing back information such as chapters, titles, menus, etc., in addition to a function of playing a video file is added, and the user can enjoy a video more conveniently with these additional information. .

However, when using such a DVD player to play highly compressed files, such as DivX files or MPEG4 files, the above additional information, especially chapter information, is not included except for the playback function. Therefore, a specific scene is selected. It is practically impossible to watch from the scene.

In other words, when playing a DivX file or an MPEG4 file with a conventional DVD player, the viewer cannot easily select a desired scene, and finds a scene that the viewer wants to watch in a detour manner by using a quick search or a time search function of the disc. none.

In particular, modern A / V content includes MPEG-4 (including MPEG-3), MPEG-7, DivX, Windows Media Audio / Video (WMA / WMV), and Advanced Audio Coding (Advanced) in addition to MPEG-1 or MPEG-2. Compressed in various forms such as Audio Coding (AAC) format, this technical limitation further increases the inconvenience.

The present invention is to overcome the limitations of the conventional DVD player playback technology in view of the above, by automatically marking chapters at user-specified intervals or their own basic intervals for video files such as DivX, MPEG4, etc. Its purpose is to provide file chapter marking and chapter-by-capture playback of chapter-marked files in an optical disc player that allows users to watch scenes they want.

According to a preferred embodiment of the present invention for achieving the above object, if any video file is loaded, determining whether a chapter play command is executed, and if the chapter play command is executed, for the file at predetermined chapter intervals Chapter-marking, loading and sequentially displaying a capture screen at every chapter interval during a normal playback command, and starting a playback operation from a point corresponding to the play time information of the selected capture screen when an arbitrary capture screen is selected; It provides a chapter recording and chapter-specific playback method of the chapter marked files of the optical disc player comprising a.

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

1 is a block diagram of an optical disc player for carrying out the method according to the present invention, which is involved in the optical pickup unit 100 for recognizing and reproducing the optical disc 10 and the recognition and reproduction of the optical disc 10. A motor driver 102 for driving the motor M, an MPEG IC 104 for processing A / V reproduction by processing RF data reproduced from the optical disc 10 from the optical pickup unit 100, and the present embodiment. According to an example, a first memory 106 in which user chapter interval information is stored, a second memory 108 in which various operation data are stored when the optical disc player is driven, and a key signal corresponding to a user's key input behavior are applied. And a key input unit 110.

Here, the MPEG IC 104 includes a servo controller 104a for controlling the optical pickup unit 100 through the motor driver 102 or the like according to the state of the data reproduced by the optical pickup unit 100, and the servo controller 104a. The MPEG processing unit 104b decodes the playback data provided through the N-X format according to the MPEG format.

In addition, the first memory 106 may be configured of, for example, an electrically erasable programmable read only memory (EEPROM), and stores user chapter interval information previously input through a setup menu. Since such user chapter interval information is stored in the EEPROM, it can be kept at all times without being erased even when the optical disc player is turned on or off.

The second memory 108 may be configured of, for example, a synchronous dynamic random access memory (SDRAM), and various operation information are temporarily stored when the optical disk player is driven.

In addition, although not shown in FIG. 1, an optical detector configured with a photodiode or the like is provided in the optical pickup unit 100, and the servo controller 104a detects a tracking error signal (Tracking Error TE) detected through the optical detector. ) Is compared with a preset reference value and a control signal (driving voltage) corresponding to the spaced amount of the compared two values is applied to the motor driver 102.

The motor M is composed of a sled motor for moving the optical pickup unit 100, a spindle motor for rotating the optical disk 10, and the like according to a control signal of the servo controller 104a. And an actuator for driving the red motor or the like to track the optical disc 10.

At this time, the optical pickup unit 100 emits a laser diode provided therein to form an optical spot on the recording surface of the optical disk 10, and transmits the reflected light of the optical spot formed as described above using a photodiode. The signal is converted and output. When the tracking error signal converted in this way, more specifically, the track data bit is applied to the servo control unit 104a, the servo control unit 104a compares the applied tracking error signal with a reference value and according to the comparison result, the actuator's sled. Tracking control is performed such that the driving error value applied to the motor or the like is applied / decreased to keep the tracking error signal value "0".

The key input unit 110 transmits a key code value corresponding to a user's key input action, and inputs a setting interval in marking chapter intervals, that is, chapters in an arbitrary video file, input by the user according to the present embodiment. It transmits the information for the MPEG IC 104. In addition, any capture information selection signal may be transmitted through the key input unit 110.

Hereinafter, with reference to the above-described configuration, the file chapter marking and the playback process for capturing the chapter-marked file of the optical disc player according to the preferred embodiment of the present invention will be described in detail with reference to the flowchart of FIG. 2.

Prior to the description of the embodiment, the video file loaded in the optical disc player will be limited to a Divix file, which limitation should be understood only as an embodiment, but not to characterize the invention. This will become clearer from the claims which follow.

First, in step S200, the MPEC IC 104 determines whether an arbitrary Divix file is loaded through the optical pickup unit 100, and if the arbitrary Divix file is loaded, the MPEC IC 104 proceeds to Step S202. Proceed to determine whether the chapter playback command has been executed. Such a chapter reproducing command can be implemented as a separate key button provided on the key input unit 110 or input information on a menu, and this fact can be easily understood by those skilled in the art. As can be, a detailed description thereof will be omitted.

Thereafter, in step S204, the MPEC IC 104 determines whether the currently loaded DivX file is a file that can be played in the optical disc player, and if it is a file that can be played, the process proceeds to step S206.

In step S206, the MPEC IC 104 inquires of the user via OSD (On Screen Display) whether to set chapter intervals. That is, the user asks whether to separately set chapter intervals.

As a result of the determination in step S206, if the chapter interval setting is requested through the key input unit 110, the MPEC IC 104 proceeds to step S208 to apply a user-specified value input through the key input unit 110. Mark chapters for the Divix file. That is, the chapter information is marked at chapter intervals specified by the user.

On the other hand, if the chapter interval setting is not requested as a result of the determination in step S206, the MPEC IC 104 proceeds to step S210 to mark the chapter information on the DivX file at the chapter interval set to the default value in the optical disc player. do.

Thereafter, when the general playback command is applied, the MPEC IC 104 proceeds to step S212 to load a capture screen at each applied time interval and sequentially display the screen on the screen. That is, the capture screen is displayed at chapter intervals specified by the user or at intervals set by default. In this case, the capture screen display may be performed in a thumbnail-nail manner, for example, and may be easily understood by those skilled in the art.

Meanwhile, in step S214, the MPEC IC 104 determines whether a random capture screen is selected through the key input unit 110, and when the random capture screen is selected, the MPEC IC 104 proceeds to step S216.

In step S216, the MPEC IC 104 loads the time information of the selected capture screen and starts the playback operation from that point.

As described above, the present invention provides a chapter setting function for a DivX file, an MPEG4 file, etc., without a chapter function, so that the user can easily find and play a desired file during subsequent playback.

According to the present invention, chapter marking is performed on DivX files, MPEG4 files, etc. without a chapter function, so that the user can easily play back scenes desired by the user at the time of subsequent playback, thereby improving operation convenience and increasing user satisfaction.

As mentioned above, although this invention was demonstrated concretely based on the Example, this invention is not limited to these Examples, Of course, various deformation | transformation is possible for it within the technical idea and the scope of the following claim.

Claims (6)

Determining whether a chapter play command has been executed when an arbitrary video file is loaded, If the chapter play command is executed, chapter marking of the file at predetermined chapter intervals; Loading and displaying the capture screens sequentially at the chapter intervals during the normal playback command; Starting a playback operation from a point corresponding to the playback time information of the selected capture screen when the random capture screen is selected; File chapter marking of the optical disc player, and the chapter-by-capture playback of the chapter-marked file comprising a. The method of claim 1, And the chapter interval is set as a default value in the optical disc player. The method of claim 1, The chapter intervals are set to a user-specified value, characterized in that the chapters of the file recording and playback of the chapter-marked file of the optical disc player. The method of claim 1, The display step may be output in the form of a thumbnail (thumb-nail) file chapter marking and chapter-by-capture playback of the chapter-marked file of the optical disc player. The method of claim 1, The chapter marked file is a DivX (DivX) format, characterized in that the file chapter marking and chapter-specific playback of the chapter-marked file of the optical disc player. The method of claim 1, And the chapter marked files are in MPEG4 format.

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