KR20010054297A - The mapping method for digital motion pictures and replaying method by using of it - Google Patents

Abstract

PURPOSE: A digital motion image mapping method and a repetitive reproduction method are provided to be available for an action practice text, etc. of the appreciation of music, practice of language or golf, etc. by allowing a user to repetitively reproduce and search a specific frame of a digital type file. CONSTITUTION: A digital motion image mapping method divides a specific location range of motion images, sound and superimposed dialog by periods. The start point and the end point of each of the divided periods are mapped based a period information unit. The mapped period sets the start point and the end point different from other periods.

Description

The mapping method for digital motion pictures and replaying method by using of it}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital video mapping and repetitive playback method. More specifically, a user desires a specific content of a digital data file that stores sound signals (including audio, sound, and dialogue), subtitle signals, and video signals. The present invention relates to a digital video mapping method that can be used for repetitive playback and section search, which can be used for language learning, motion learning, music listening, and the like, and a repeat playback method using the same.

Movie (VIDE0) Video, sound (music, sound, dialogue) and subtitle data stored on CD are converted to digital data that is easy to process and has excellent playback level. The digital data format used at this time is mainly a format such as MPEG2 or MOV. In particular, devices such as DVDs are widely used in language learning textbooks including large-capacity movies, movies, and voices, and textbooks for golf and dance. In the future, with the development of semiconductor memory, the storage and playback of moving images using nonvolatile memory such as flash memory will be put to practical use.

These digital signals are composed of frames having a minimum structural unit including a plurality of bit strings, and a plurality of frames are gathered to output one screen or information. In addition, since the digital data can be manipulated on a frame basis, there is an advantage in that it can include various functions.

However, inconvenience in use occurs when playing a conventional movie CD. In other words, if you want to find something you want to watch again (eg, a particular scene, original soundtrack, or subtitle) during movie playback, you can use the fast forward or backward mode to search for the scene or music. In order to replay the section repeatedly, the starting point and the ending point must be found and marked. Therefore, even if the section is repeated, it takes a lot of time. In addition, it is difficult to press the switch according to the exact mechanical part, in fact, it is a problem that the interval repeat playback function is not widely used.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to repeatedly play and search a specific frame of a digital format file that stores a voice signal, a caption signal, and a video as desired by a user. The present invention provides a digital video mapping method that can be used for appreciation, language training, or training exercises such as golf.

It is another object of the present invention to repeatedly play and search a specific frame of a digital format file storing a voice signal, a caption signal, and a video as desired by the user, and use it for motion picture teaching, language training, or operation training materials such as gold. It is to provide a possible repeat playback method.

In the digital video mapping method of the present invention for achieving the above object, in a digital signal including a moving picture, sound, and / or a subtitle signal in which respective signals are stored as a digital signal, a specific position in the moving picture, sound, and subtitle signal The range is divided into sections, and the starting point and the ending point of each divided section are separated and mapped by the section information unit, and the mapped section is characterized in that a starting point and an ending point which can be distinguished from other sections are set.

The repetitive reproduction method according to the present invention comprises a first step of reproducing a digital data signal in which a start point and an end point are mapped according to each section and divided into section information units according to a specific position, and during a reproduction of the digital data signal. A second step of setting the start point of the section information unit at the current playback position as the start point of the repeat playback when a signal is input from the setup key for repeat playback of a single section; and from the setup key for repeat section setup during playback of the digital data signal. When the signal is input, the start point of the input section is set as the start point of the repeating section, and when the end point is input, the end point of the section is set as the end point of the repeating section.

1 is a time chart showing a digital data mapping state according to the present invention;

2 is a flowchart showing interval repeat playback according to the present invention;

3 is a flowchart showing repetition interval setting and reproduction according to the present invention;

4 is a flowchart showing the operation of the fast search state according to the present invention;

5 is an example of an output screen for soundtrack search setting according to the present invention;

6 is a block diagram of an apparatus for reproducing a digital video signal according to the present invention;

7 is a schematic diagram showing examples of the section information storage method in the present invention.

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

10: DVD drive unit 20: video, audio playback device

30: key input unit 40: CPU

50: video decoder 60: sound decoder

70: screen controller 80: amplifier

90: display device 100: speaker

Hereinafter, the digital video mapping method and the repeated playback method using the same will be described in detail with reference to the accompanying drawings.

First, the apparatus in which the method of the present invention is performed will be described with reference to FIG. 6. The DVD in which the digital signal corresponding to the movie contents is stored is contained in the DVD driving unit 10 which is operated by a motor (not shown) which rotates at a high speed and reproduced. Alternatively, in the case where a moving image is stored in a nonvolatile memory 20a such as a flash memory, digital data is transferred to the CPU 40 by a system interface between the storage memory and the CPU for playback. do. After the digital signal is reproduced in the moving picture and audio reproducing apparatus 20, the digital video signal is output. The digital video signal includes a video signal, a sound (music, sound, dialogue) signal, a subtitle, etc. in the following. In addition, since the digital video reproducing apparatus is a conventionally known device, detailed description thereof will be omitted. The section information before playback is stored in a specific address of the separate system memory 40a.

The output digital video signal is processed by the CPU 40 and then output to the video decoder 50 and the audio decoder 60, respectively, to the screen display device 90 and the speaker 100, respectively. The method of the present invention is carried out in the CPU 40, which is built in a program form, and input of commands (section repeat play, repeat section set and play mode, search mode, sound track search mode) is performed through the key input unit 30. Is entered. The key input unit 30 includes a plurality of function keys, and can input commands using a remote controller or a keyboard of another computer as well as the key input unit. Input of each function command is assigned to a function key for inputting the corresponding command, and is performed by pressing the function key. The screen display device 90 may be any screen output device such as CRT, LCP, PDP, and the like, which are conventionally used.

The term mapping used in the description of the present invention means synchronizing the segment start and segment end points stored in the digital video file and the segment search information. This means that the starting point of a given section in the mapping step is linked with the frame which is the minimum unit of the corresponding digital video.

The CPU 40 performs the corresponding command when the command is input from the key input unit 30, which will be described later. The playback command is output after the control signal is output from the CPU 40 to the video and audio playback device 20 to search for the corresponding control section.

1 is a signal sequence chart over time showing a method for mapping to digital video data according to the present invention. In general, digital video data is composed of a plurality of bits to form a single data, the minimum unit is a frame (frame). A digital signal is composed of a plurality of frames and constitutes a video stream, a still picture, a sound, or a subtitle, and each signal is divided into an initial point, an end point, an initial point, an end point, and the like of a screen in units of frames. Can be linked.

Each signal is classified into a specific scene, a specific sound, and a specific subtitle based on a frame unit, and a start point and an end point are set for each divided section, and the corresponding frames are stored as section information. The data that stores the start and end points is stored in a separate file in a digital data file and then stored as a special part of the system memory before playback. Here the sound can be one of music, sound, or dialogue.

Each section setting method is as follows, for example of a movie. A movie usually includes moving picture data divided into a plurality of scenes, sound data including music, sound, or dialogue, and subtitle data when subtitles are included.

When setting the section of the video based on the movie scene, first determine the movie scene (hereinafter referred to as "scene") to be divided into sections. This can be distinguished in advance when a scene of a movie changes, or when a scene is long, a scene in which a specific actor appears on the screen, or a scene such as a love scene. Obviously, the distinction of the scene can be determined by referring to the scenario or by the producer.

After dividing the movie scene as described above, the first frame corresponding to each divided scene is searched and stored in the section information. These are preferably given in the order from the first frame to the last frame of the movie.

Referring to FIG. 1 again, if the scene to be set is up to frame 0-c, the start point is displayed at the frame start position of frame 0 and the end point is displayed at the frame end position of frame c. The 0-c frame is recorded as one divided section, and the section information is stored as a section information file, which is used later for reproducing and searching.

In the method of the present invention, not only moving pictures but also sound (music, sound, or dialogue) can be applied in the same manner. That is, specific parts of the corresponding digital signals (music, sound, or dialogue) included in the digital data corresponding to the movie contents are classified as described above, and section information is allocated to each of the divided sections. The allocated section information is stored in advance as data necessary for a CD or a DVD after being stored in advance.

In this case, the section information may be stored as a separate digital file to distinguish sections of a video, sound, subtitle, and the like, and the section information of various kinds may be stored in one digital file. That is, in the former case, the video information is stored in three files, such as video section information, sound section information, and caption section definition. In the latter case, section information such as video sound captions is stored in one digital data. An example of a data storage method for section information is shown in FIG. 7. The three data on the upper side are stored, respectively, and the data on the lower side represents the continuously stored state.

FIG. 2 is a flowchart illustrating a repetitive playback method that can be used when reproducing digital data of a movie mapped to each section as described above. This is a case of simply repeating a single section (1 section). When a signal (single section repeat playback command) is input from the setting key for repeat playback of a specific section during playback of a digital data signal, the start point of the section at the current playback position. It is a simple playback method in which the playback is performed after setting to the start point of repeat play and the end point of the section to the end point of repeat play. The section mode selection here sets the criteria for section selection and becomes one of a moving picture mode, a sound mode, or a dialogue mode. According to the mode set by section mode selection, corresponding section information is read and used later.

Referring to FIG. 1, if there is a repetitive playback key input in a state in which a frame of the currently reproduced frame is a frame, the CPU 40 determines that a 0-c frame including a frame is included from the section information on the current position. It is set to one section and detects that the start point and the end point are stored, and repeats the set section.

3 is a case where a plurality of sections are set and repeated by a user, rather than a simple section repeat play. When a signal is input from a setting key for setting a repeat section during reproduction of a digital data signal, the start point of the section is repeated. If the end point is input and the end point is input, the end point of the section is set as the end point of the repeating section and played. In other words, this is not merely repetitively reproducing a single section, but repeatedly reproducing a section set by the user. When a key for repetition section setting is input, the CPU 40 detects and performs this. Since the interval mode selection is the same as in FIG. 2, detailed description thereof will be omitted.

During the playback of video and audio (including sound and metabolism), the user selects the desired section mode (assuming video selection for convenience of explanation) and presses the section setting start key for repeat section setting. The starting point of the section including the output video frame is recognized as the starting point of the section setting. Thereafter, there is a key input for terminating the section setting, and the end point of the section including the video frame to be output is set as the end point of the repeat playback section. When a new section to be played repeatedly is set as described above, the set section is repeatedly played.

4 is a search method for convenience of a search, which is also a method of performing repetitive playback.

During video and audio playback, the section mode is selected and a search mode is input. In the forward mode in the search mode, the start point of the front section of the section including the frame currently being processed is set as the playback start point and playback is performed. However, in the reverse mode, since the start point of the rear part of the section including the frame currently being progressed is set as the play start point and the playback is performed, there is an advantage that the search function can be easily performed.

Although the above description has been based on the state in which the video is selected as the interval mode, it is obvious that the same can be applied to the dialogue as well as the video, all of which belong to the scope of the present invention.

5 is a reference diagram for another method derived by the present invention.

This method is applied to the soundtrack embedded in the movie. The method outputs a list of soundtracks appearing in the movie while mapping the specific soundtrack and storing the section information corresponding to the soundtrack as in the method of the present invention. If you specify a specific soundtrack, you can play it immediately.

5 shows an example of a list of soundtracks from the famous musical "Sound Off Music". This output list is stored in advance. When the user selects the soundtrack section search mode in the search mode, the soundtrack list as shown in FIG. 5 is output on the screen using the OSD function.

If a specific sound track (for example, 3. edelweiss) is set in the output list, the CPU 40 reads the start point and the end point of the set soundtrack (Edelweiss) from the section information corresponding to the set soundtrack, and then reads it. Will play. This reproduction process becomes a normal reproduction operation. The start and end points of the soundtrack are considered in advance during production and are preferably stored on a movie CD.

According to another feature of the present invention, it is apparent that the soundtrack reproduced as described above can be divided into smaller sections according to specific measures or lyrics. By further subdividing in this way, it is possible to precisely repeat playback. The section setting display displayed at this time does not cause confusion by using a symbol different from the section information of the soundtrack.

As described above, according to the present invention, it is possible to repeatedly reproduce a specific frame of a digital format file that stores a voice signal, a caption signal, and a moving image as desired by the user, and thus it can be used for language training or listening to music.

In addition, since the user can easily search for a desired part in the video, it not only provides convenience in use, but also has an advantage of shortening the search time.

Although the invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that modifications and variations can be made within the spirit and scope of the invention, and such variations or modifications will belong to the appended claims. .

Claims (6)

In a digital signal including a moving picture, a sound, and / or a subtitle signal in which respective signals are stored as digital signals, A specific position range among video, sound, and subtitle signals is divided into sections, and the start and end points of each divided section are separated and mapped in section information units, and the mapped section is a start point and an end that can be distinguished from other sections. Digital data mapping method, characterized in that the point is set. The method of claim 1, And the mapping is performed for each of one of video, sound, subtitle signals, or a combination thereof and stored. The method of claim 1, And the section information is stored as a separate digital data file, and various section information is stored in one digital data file or stored as a separate digital data file. In the method of performing repeat playback using the mapped digital data, A first step of reproducing the digital data signal in which the start point and the end point are mapped according to each section and mapping the start point and the end point according to each section, and the specific mode selection is performed during the reproduction of the digital data signal, A second step of setting the start point of the section information unit at the current playback position as the start point of the repeat playback when a signal is input from the setup key for repeat playback; and the signal from the setup key for repeat section setup during playback of the digital data signal. And a third step of setting a start point of the section as a start point of the repeating section and setting the end point of the section as an end point of the repeating section if the end point is input. In the method of repeatedly playing the soundtrack contained in the movie, The soundtrack included in the movie is divided into a specific position range into sections, the start point and end point of each divided section are divided and mapped into section information units, and the list of the mapped soundtrack sections is set. A digital video repeating playback method comprising a soundtrack, characterized in that for outputting on the screen and searching for and repeatedly playing a selected specific soundtrack. The method of claim 4, wherein Sections are divided by lyrics or measures for each of the soundtracks, and the mapping is further performed to further segment the sections.