KR101308374B1 - A DVD recorder and a cell unit editing method of the DVD recorder - Google Patents

Abstract

CLAIMS What is claimed is: 1. A method of storing video data distinguishable in units of cells on a medium, the method comprising: outputting video data to be stored to a display unit of a device; Receiving a starting point for at least one cell of video data from a user; And storing a cell selected by the user from the starting point, thereby increasing the user's selectivity with respect to the recorded image, by editing the image recorded by the user in units of cells.

Description

A DVD recorder and a cell unit editing method of the DVD recorder}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cell-based editing method of a DVD recorder and a DVD recorder, and more particularly, to a cell-based editing method of a DVD recorder and a DVD recorder capable of editing in a cell unit of an image.

In recent years, DVD recorders are widely used in place of a video tape recorder as a device for recording a television broadcast or recording video. A DVD recorder uses a recording DVD as media, and a recording DVD includes a DVD-R for recording once, a DVD-RW suitable for video recording, and a DVD-RAM suitable for data recording for a PC.

Conventional DVD recorders include an A / V encoder module and an A / V decoder module, HDD (Hard Disk Drive), which encode or decode input video and audio data in MPEG format as disclosed in Korean Laid-Open Patent Publication No. 2003-0067248. And a loader engine consisting of a DVD drive.

In such a conventional DVD recorder, when video and audio data are input, the A / V encoder encodes the MPEG format and records the encoded data stream on a DVD-R / RW mounted in a DVD drive.

On the other hand, when recording a video on a DVD-R / RW in a video format in a conventional DVD recorder, the video is recorded in a plurality of VTS (Video Title Set) (up to 99 titles) as disclosed in Korean Patent Publication No. 10-0221429 Each VTS includes a video title set information (VTSI) that is management information of a title, a video object set (VOBS) including video data and audio data, and a backup of video title set (VTSI_BUP). Is done. In addition, DVD recorders and other DVD devices could play back images using VTSI.

However, in the conventional DVD recorder for recording an image in a video format, there is a problem in that the entire title must be played even when there is a portion that is not desired to be recorded when the image is recorded on a DVD disc and played back the recorded image. In addition, even when the user wants to play only a specific part of the recorded title, there is a problem that only the corresponding title can be played, so that even the part which is not desired by the user is played back. As described above, in the conventional DVD recorder for recording an image in a video format, there is a problem that the user's selectivity for the image to be reproduced is inferior.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and an object of the present invention is to provide a DVD recording device and a cell-by-cell editing method of a DVD recording device which improve the selectivity of a video to be reproduced by editing the recorded video by cell unit.

According to an aspect of the present invention, there is provided a method of storing video data that can be distinguished in units of cells on a medium, the method comprising: outputting video data to be stored to a display unit of a device; Receiving a starting point for at least one cell of video data from a user; Storing the cell selected from the user by the starting point.

According to another aspect of the present invention, there is provided a method of storing and editing video data that is distinguishable in units of cells on a medium, the method comprising: outputting video data to be stored to a display unit of a device; Receiving a starting point for at least one cell of video data from a user; Storing a cell whose starting point is selected from the user; Reading representative pictures of a cell whose start point belongs to a cell selected from the user and a cell belonging to the video data from the video data; Outputting the read representative screens to a display unit; Displaying the representative screen selected by the user's input with a border color different from that of the non-selected representative screen; And storing the remaining cells except the cells corresponding to the representative screen selected by the user's command as the edited video data.

As described above in detail, the present invention can edit the image recorded by the user in units of cells, thereby increasing the user's selectivity with respect to the recorded image.

In addition, when editing by cell, the representative screen of each cell is displayed so that the user can easily grasp the contents of the corresponding cell.

1 is a block diagram showing a DVD recorder according to an embodiment of the present invention.
2 shows a logical data structure of a DVD-Video disc.
FIG. 3 is a detailed view of the VOBS of FIG. 2.
4 is a diagram illustrating an eye picture stored in a video pack belonging to the VOBU of FIG. 3.
5 shows a program chain PGC.
FIG. 6 is a flowchart illustrating a method of editing in units of cells in the DVD recorder of FIG.
FIG. 7 is a diagram illustrating a GUI screen displayed to allow a user to designate a start point of a cell in the cell-based editing method of FIG. 6.
8A and 8B illustrate a process of editing in a cell unit in the cell unit editing method of FIG. 6.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, a DVD recorder according to an exemplary embodiment of the present invention is an A / V encoder that compresses video and audio data input to various input terminals (not shown) by MPEG-2 (Motion Picture Expert Group) method. 11), a stream control unit 12 for controlling the flow of the compressed video and audio data streams in the A / V encoder 11, and a DVD drive equipped with a DVD disc to perform recording and reproduction of the video and audio data streams. 13, the HDD 14, the A / V decoder 15 for decoding the video and audio data streams, the controller 16 for controlling the above devices, and the signals transmitted from the remote controller 19. It includes a remote control receiver 17 and a display unit 18 to receive and transmit to the control unit 16. At this time, the remote controller 19 has a menu button 21a for loading or closing a menu screen on a GUI (Graphic User Interface) connected to a DVD recorder, an enter button 21b used for selecting an item, and between items displayed on the screen. Up, down, left and right direction buttons (22a, 22b, 22c, 22d) and the like are used to move.

When a video recorder and audio data are input to the input terminal in the recording mode, the DVD recorder compresses the data in MPEG-2 format and stores the data stream on the DVD disc. Decoded by the V decoder 15 and displayed on the GUI of the DVD recorder.

As shown in Fig. 2, the logical data structure of a typical DVD-Video disc is divided into a volume and file structure 31, a DVD-Video zone 32 and other DVD zones 33, and a DVD-Video zone 32. Is again divided into a VMG (Video Manager) 34 and a VTS 35. At this time, the VMG 34 is generated by finalization, stores information for managing the VTS 35, and is composed of a plurality of files. The VTS 35 stores video data, audio data and subpicture data, and up to 99 can be made in one DVD-Video zone 32. The volume and file structure 31 corresponds to a management area defined by a UDF (Universal Disk Format) bridge.

The VTS 35 includes a video title set information (VTSI), a video object set (VOBS), and a backup of video title set (VTSI_BUP). The VOBS 40 includes a plurality of VOBs as shown in FIG. 41). At this time, an identification number (VOB_IDN #i, i is a natural number) is assigned to each VOB 41, and the VOB 41 can be specified by this identification number. The VOB 41 is composed of at least one cell 42, and the cell 42 is also given an identification number (C_IDN #j, where j is a natural number) like the VOB 41.

The cell 42 is composed of at least one Video Object Unit (VOBU) 43. The VOBU 43 has one NV_PCK (Navigation Pack) 44 disposed at the head, followed by a V_PCK (Video Pack) 45. ), A_PCK (Audio Pack) 46 and SP_PCK (Sub Picture Pack) 47 are arranged in a pack sequence. That is, the VOBU 43 can be viewed as a collection of packs from one NV_PCK 44 to the next NV_PCK 44. At this time, the playback time of the VOBU 43 is the same as the playback time of the video data included in the VOBU 43, and the playback time is determined to be 0.4 seconds or more and 1 second or less.

As shown in Fig. 4, the V_PCK 44 includes an I-picture 51, a B-picture 52, and a P-picture that constitute a group of pictures (GOP). (53). Here, the I picture 51 is an intra coded picture (ie, intra-frame coded picture), and the B picture 52 is a bidirectionally predictive coded picture (ie, bidirectional predictive coded picture). , P picture 53 is a predictive coded picture (ie, inter-frame forward predictive coded picture).

As shown in FIG. 5, a program chain (PGC) 60 having a plurality of programs includes a program chain information (PGCI) 61 and a VOBS 40 having cells. The PGCI 61 is navigation data for controlling the presentation of the PGC 60, and includes a precommand area 62, a presentation control block 63, and a post command ( Postcommand) area 64.

The presentation control block 63 includes a Cell Playback Information Table for setting the order of cells to be reproduced with a start address of each cell, a program playback mode, and the like.

On the other hand, the PGC 60 is stored in the VTS_PGCIT (Video Title Set Program Chain Information Table) of the above-described VTSI. The DVD recorder can know the order of cells to be played back using the VTS_PGCIT stored in the DVD disc.

 A cell unit editing method of a DVD recorder according to an embodiment of the present invention will be described with reference to FIG. Equipped with a DVD disc capable of recording video in a video format on the DVD recorder, and pressing a menu button 21a on the remote control unit 19 (e.g., recording, playback, setup, etc.) When the recording item is selected (or the scheduled recording start time), recording starts (70, 72).

At the time of recording, the user can arbitrarily select the start point of the cell (74), and a GUI (Graphic User Interface) screen as shown in FIG. 7 is displayed so that the user can select the start point of the cell. The GUI screen for the user to select the start point of the cell is provided with a Picture In Picture (PIP) window 101 displaying an image being recorded on the upper left side, and the CELL STATRT button 102 on the right side of the PIP window 102. ) Is prepared. A representative screen display area 103 is provided below the PIP window 101 and the CELL START button 102 to sequentially display screens of the cell start point selected by the user.

Therefore, when the user views the image displayed on the PIP window 101 and the image to start a new cell is displayed on the PIP window 101, the user presses the CELL START button 102 (the enter button 21a of the remote controller 19). At that point, a new cell is started. When the user presses the CELL START button 102, the previous cell ends and a new cell starts. For example, if a user presses the CELL START button while video data and audio data are recorded in CELL # 2, CELL # 2 ends and CELL # 3 starts.

In the above, the user can manually select a start point of a new cell, but the start point of the cell may be automatically set. For example, a new cell may be started at a predetermined time interval, or a change of a scene may be detected to start a cell at a change point of the scene.

When a start point of a new cell is set manually or automatically, the controller 16 stores the cell information of each cell, such as a temporary storage medium such as a temporary register (not shown) or a random access memory (RAM) (not shown) of the controller 16. Store in In this case, the cell information refers to information that can identify a cell, such as an IDN (Identification Number) of the cell or the start and end addresses of the cell, and is temporarily stored in a DVD recorder, unlike video data and audio data recorded on a DVD disc. do.

Next, the controller 16 determines whether the recording has ended and returns to step 74 when the recording is not finished, and checks whether the recording mode is in the edit mode (80). The edit mode is set when the user selects an edit item of the menu item.

In the edit mode, the controller 16 displays a representative screen A-F of each cell in a thumbnail manner as shown in FIG. 8A (82). In this case, it is preferable that the representative screen displays the first I picture among a plurality of I pictures included in each cell. The representative screen of each cell displayed in FIG. 8A is an I picture of an image recorded later from left to right and from top to bottom. In addition, when the set number of cells is not sufficient to represent the representative screen of all cells in one page, a plurality of pages may be created and the representative screen of each cell may be sequentially displayed. The right side of the representative screen is provided with an END button 91 for use when the user wants to finish editing.

On the other hand, the user sees the representative screen (A-F) of each cell as shown in Figure 8a and the user edits the cell (84). To edit the cell, press the menu button 21a while the representative screen of the cell to be edited is activated. Then, a play 92 or a delete item 93 is displayed at the lower right of the representative screen. At this time, in the screen of FIG. 8A in which the representative screen AF is displayed, the representative screen in the upper left (A) is activated first, and when the user moves the left, right, left, and right directions buttons 22a, 22b, 22c, and 22d of the remote controller 19, The left and right representative screens are activated in sequence. In addition, the representative screen being activated may be brighter than other representative screens or a colored band may be formed on the edge of the representative screen to indicate that the representative screen is activated.

If the user selects the playback item 92 or the deletion item 93 from the items 92 and 93 displayed at the lower right of the representative screen, the edit result of the corresponding cell is stored in the temporary storage medium. At this time, even if the user selects to delete, the video data and audio data stored in each cell of the DVD disc are not deleted but are not played back.

Whenever the edit result of each cell is input, it is determined whether the edit is completed (86). If the edit is not completed, the process returns to step 82. If the edit is completed, the cell information is sent to the PGCI 61 according to the edit result of each cell. Record (88). For example, if the user edits by deleting the cells having the A and B representative screens displayed on page 1 of Fig. 8A, the cell information of the cells having the A and B representative screens is not recorded in the PGCI 61. Only the cell information of is recorded in the PGCI 61 and displayed sequentially in the order of the cells having the CDEF representative screen at the time of reproduction.

If the user does not select an edit item in step 80, the temporarily stored cell information is recorded in the PGCI 61 of the DVD disc so that the recorded image is displayed as it is during playback (90).

13: DVD drive 16; control unit
19: Remote control 21a: Menu button
21b: Enter 42: cell
45: V_PCK (video pack) 51: I picture
60: PGC 61: PGCI
63: Presentation control block 102: CELL START button
103: Representative screen display area 92: Play button
93: Delete button

Claims (4)

delete delete In a video data editing method of a recording device for editing video data recorded on a recording medium,
Dividing the video data into a plurality of sections;
Displaying a representative screen corresponding to each of the plurality of sections on a display unit of the recording device;
Receiving information regarding the selection of the representative screen;
Displaying a border of the selected representative screen differently from a border of another representative screen; And
And storing the video data corresponding to the selected representative picture on the recording medium as new video data. A display unit;
The video data recorded on the recording medium is divided into a plurality of sections, a representative screen corresponding to each of the plurality of sections is displayed on the display unit, and the edge of the selected representative screen is input by receiving information on the selection of the representative screen. And a controller configured to display the video data corresponding to the selected representative screen differently from the edges of other representative screens and to store the video data corresponding to the selected representative screen as new video data on the recording medium.

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