KR100357242B1 - The mapping method for digital data and replaying method by using of it - Google Patents

Abstract

The present invention can repeatedly play and search a specific content on digital data that stores sound signals (including voice, sound, and dialogue), subtitle signals, or video signals, so that language learning, movie watching, golf, etc. The present invention relates to a digital data mapping method that can be used for motion learning using a moving picture, and a repeating playback method using the same.

The digital data mapping method of the present invention is performed on one of video, sound, and caption signals, or a combination thereof. The digital data mapping method divides a specific range of the video, sound, and caption signals into sections, and starts the starting point of each of the divided sections. End points are divided into section information units, and each divided section maps start points and end points that can be distinguished from other sections, and information about the mapped sections is stored in a corresponding digital data file or stored separately. Characterized in that it is stored as a digital data file.

In the repeat playback method according to the present invention, when a signal for a single section repeat playback is input in a specific section during playback of the mapped digital data, the start point of the section of the corresponding position is set as the start point of the repeat playback, and the end point is used for repeat playback. It characterized in that the repeat playback by setting as the end point.

Description

Digital data mapping method and iterative replay method using the same {The mapping method for digital data and replaying method by using of it}

According to the present invention, specific contents of a digital data file storing sound signals (including voice, sound, and dialogue), subtitle signals, and moving image signals can be repeatedly reproduced as desired by the user and searched by section. The present invention relates to a digital data mapping method that can be used for motion learning, music listening, and the like, and to 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.

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 data file storing a voice signal, a caption signal or a video as desired by the user. The present invention provides a digital data mapping method that can be used for movie training, language training, or training practice materials such as golf.

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

In order to achieve the above object, the digital data mapping method of the present invention is performed on one or a combination of video, sound, and caption signals, and divides a specific range of video, sound, and caption signals into sections, respectively. The start point and the end point of the divided section are divided into section information units, and each divided section maps start points and end points that can be distinguished from other sections, and the information about the mapped sections is included in the corresponding digital data file. And stored or stored as a separate digital data file.

In the repeat playback method according to the present invention, when a signal for a single section repeat playback is input in a specific section during playback of the mapped digital data, the start point of the section of the corresponding position is set as the start point of the repeat playback, and the end point is used for repeat playback. It characterized in that the repeat playback by setting as the end point.

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

2 is a flowchart showing a method for repeating section repeating 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 data signal in which the present invention is implemented;

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 data 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 (or video CD) in which the digital signal corresponding to the movie contents is stored is contained in and reproduced in the DVD drive unit 10 which is operated by a motor (not shown) which rotates at a high speed. Alternatively, in a case in which digital data is stored in a nonvolatile memory 20a such as a flash memory (for example, an MP3 player or an MP3 / CD player), between the storage memory and the CPU where the digital data is stored. The digital data is transferred to the CPU 40 and reproduced by the system interface. After demodulation of the digital data is performed in the video and audio reproducing apparatus 20, the digital data signals are respectively output. The digital data signal includes a moving image data signal, a sound (music, sound, dialogue) data signal, subtitle data, and the like, hereinafter abbreviated. In addition, since the digital data reproducing apparatus is a conventionally known apparatus, 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 data signals are output by the CPU 40 to the image decoder 50 and the sound decoder 60, respectively, and to the screen display device 90 and the speaker 100, respectively. The method of the present invention is implemented in the CPU 40 by being built in a program form, and the input of commands (section repeat play, repeat section set and play mode, search mode, sound track search mode) includes a key input unit having a plurality of keys. It is input through 30. 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 point and segment end point stored in the digital data file and the segment search information. This means that the start point and the end point of a given section in the mapping step are linked with the frame which is the minimum unit of the corresponding digital data.

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 of mapping to moving image data in digital 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. 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 generally 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 divided section. 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, etc., and each type of section information may be stored in a corresponding digital data file to which the mapping of the present invention is applied. . 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 caption 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 of setting and repeating at least two or more sections by a user. When a signal is input from the setting section for setting a repeat section during reproduction of a digital data signal, the start point of the section is set as the start point of the repeat section, and ends. When a point is input, the end point of the section is set as the end point of the repeat 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 of 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 different symbol from the section information of the soundtrack. The repeated playback method of the present invention is a device having a part of hardware as shown in FIG. For example, the present invention can be applied to devices such as digital data reproducing apparatuses capable of playing MP3s, audio or video CD reproducing apparatuses, and DVD reproducing apparatuses, and reproducing apparatuses having such a function are also included in the scope of the present invention. Referring back to FIG. 6, as part of the overall configuration of the DVD system described above, a subtitle signal is decoded in a nonvolatile memory and digital data stored in the nonvolatile memory and read by a CPU for reproduction. A video decoder and a decoded signal output from the video decoder through a screen display device. A screen control device for controlling the output, an audio decoder for decoding an audio signal contained in the digital data stored in the memory and read out by CP for playback, and amplifying the audio signal output from the audio decoder through a speaker. An apparatus including an amplifier, an input for inputting a command or data, a system memory in which data and a control program necessary for operation are stored, and a sipe oil for controlling the entire apparatus can be operated as a digital data (MP3) reproducing apparatus. Obviously, the MP3 file format is not limited to the MP3 file format. In the case of storing and reproducing the digital data created by the mapping method of the present invention in the nonvolatile memory, a single section repetitive reproduction is performed in a specific section during the reproduction of the digital data. When the signal is input, repeat play can be performed by setting the start point of the section of the corresponding position as the start point of the repeat play and the end point as the end point of the repeat play. When a signal is input, the start point of the section of the corresponding position is set as the start point of the repeat play, and when the end point is input, the end point of the section of the corresponding position is set as the end point of the repeat section. The same can be applied to a video CD or an audio CD.

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 (12)

In the digital data including a moving picture, sound, or subtitle signal in which each signal is stored as a digital signal, It is performed for one or a combination of the video, sound, and caption signals, and classifies a specific range of the video, sound, and caption signals into sections, and divides the start and end points of each divided section into section information units. Each divided section maps a start point and an end point that can be distinguished from other sections, and the information about the mapped section is stored in a corresponding digital data file or stored as a separate digital data file. Digital data mapping method. delete delete It divides a specific range among video, sound, and subtitle signals into sections, and divides the starting point and ending point of each divided section into section information units, and each divided section has a starting point and an ending point that can be distinguished from other sections. In the method for performing repeat playback using the mapped digital data, When a signal for repeating a single section is input in a specific section during the reproduction of the digital data, repeating playback is performed by setting a start point of a section of the corresponding position as a start point of repeat play and an end point as an end point of repeat play. Digital data repeat playback method. The method of claim 4, wherein In the repeat playback method, when a signal for repeat play of a repeat section is input in a specific section while digital data is being played back, the start point of the section of the corresponding position is set as the start point of repeat play, and when the end point is input, the end point of the section of the corresponding position is set. And reproducing the digital data as an end point of the repetition section. In the method of repeatedly playing the soundtrack included in the movie, The soundtrack included in the movie is divided into sections, and the start and end points of each divided section are divided and mapped into section information units, the list of the mapped soundtrack sections is set, and the list is It outputs on the screen and searches for and repeats the selected specific soundtrack, and for each soundtrack, the sections are divided by lyrics or measures, and the mapping is further performed to include the soundtrack, characterized in that the sections are further subdivided. Digital data replay method. A memory for storing the digital data mapped by the method of claim 1, an image decoder for decoding an image and / or a subtitle signal in the digital data stored in the memory and read out by a sipe oil for reproduction, and from the image decoder. A screen controller for controlling the output of the decoded signal to be output through a screen display device, an audio decoder for decoding an audio signal contained in digital data stored in the memory and read out by a sipe oil for reproduction, and a speaker Digital data reproducing apparatus including an amplifier for amplifying the sound signal output from the sound decoder, an input unit for inputting a command or data, a system memory in which data and control programs necessary for operation are stored, and a sipeil for controlling the entire apparatus. To During the reproduction of digital data read and reproduced from the memory, if a single-section repeat playback signal is input from the input section for single-section repeat playback in a specific section, the start point of the section of the corresponding position of the currently reproduced digital data is set to repeat playback. A digital data reproducing apparatus characterized by setting a start point and an end point as an end point of repeat play to perform repeat play. The method of claim 7, wherein When the digital data reproducing apparatus receives a repetition section reproducing signal from the input unit for repetitive reproduction of a repetition section in a specific section while the digital data is being reproduced, the start point of the section of the corresponding position is set as a start point of repetitive reproduction, and an end point is inputted. And repeating playback by setting the end point of the section of the corresponding position as the end point of the repeat section. A compact disc storing digital data mapped by the method of claim 1, a driver for reading digital data from the compact disc, and an image decoder for decoding a video and / or subtitle signal in the digital data read out from the driver. And a screen controller which controls to output the decoded signal output from the video decoder through a screen display device, an audio decoder which decodes a sound signal included in the read digital data, and an output from the sound decoder through a speaker. A CD reproducing apparatus comprising an amplifier for amplifying a sound signal to be output, an input unit for inputting a command or data, a system memory in which data and a control program necessary for operation are stored, and a sippy oil for controlling the entire apparatus, During the reproduction of the digital data read and reproduced from the disc drive unit storing the digital data, if a single section repeat playback signal is input from the input section for single section repeat playback in a specific section, the section of the corresponding position of the currently reproduced digital data is input. A CD playback device, characterized in that for repeating playback by setting the start point of the repeating playback start point and the end point as the end of the repeat playback. The method of claim 9, When the CD reproducing apparatus receives a repetition section reproducing signal from the input unit for reproducing the repetition section in a specific section during digital data reproduction, the CD reproducing apparatus sets the start point of the section of the corresponding position as the start point of the repeat play, and when the end point is input. A CD playback device, characterized in that for repeating playback by setting the end point of the section of the corresponding position as the end point of the repeat section. A DVD storing digital data mapped by the method of claim 1, a driver for reading digital data from the DVD, an image decoder for decoding an image and / or a subtitle signal in the digital data read from the driver, A screen control device which controls to output the decoded signal output from the image decoder through a screen display device, an audio decoder which decodes an audio signal included in the read digital data, and a sound output from the sound decoder through a speaker In the DVD playback apparatus comprising an amplifier for amplifying a signal, an input unit for inputting a command or data, a system memory in which data and a control program necessary for operation are stored, and a sipe oil for controlling the entire apparatus, During the reproduction of the digital data read and reproduced from the digital driver which stores the digital data, if a single section repetitive playback signal is input from the input section for single section repeat playback in a specific section, the section of the corresponding position of the currently reproduced digital data is input. A DVD playback apparatus, characterized in that for repeating playback by setting the start point of the repeating playback start point and the end point as the repeating playback end point. The method of claim 11, When the DVD reproducing apparatus inputs a repetition section reproducing signal from the input unit for repetitive reproduction of a repetition section in a specific section during the reproduction of digital data, the start point of the section of the corresponding position is set as a start point of repetitive playback, and when an end point is input. A DVD playback apparatus, characterized in that for repeating playback by setting the end point of the section of the corresponding position as the end point of the repeat section.