KR20050056636A - Method for editing and searching contents in disc media writable system - Google Patents

Abstract

The present invention divides the contents contained on the disc into any desired number and classifies and services the initial image of each partition into index information (editing information) for searching so that the editing and searching of the contents can be quickly realized. To this end, the present invention, unlike the conventional method of searching for a desired position through visual recognition through the N-speed playback method or a menu method using a title or chapter division, divides the content contained on the disc into any desired number and The time information of the initial picture (I-picture picture) of each divided area is created in a table, classified into edit information for searching, and recorded in the TOC area of the disc. By providing multiple screens of one N × N or N × M split screen, Yet simple to navigate, and edit that will be surely realized.

Description

METHOOD FOR EDITING AND SEARCHING CONTENTS IN DISC MEDIA WRITABLE SYSTEM}

TECHNICAL FIELD The present invention relates to a technique for editing content, and more particularly, to a method suitable for editing and searching in a form aimed at video content recorded on a disc used in a disc media recordable system.

As is well known, systems using disc media (e.g., VCDs, DVDs, etc.) include reproduction only systems, recording only systems, recording and reproduction only systems, etc. The present invention is directed to a disc medium recording type system. It is related to function improvement.

In general, when a user wants to search for a desired position (part) of content recorded on a disc (or an optical disc) in which audio / video (A / V) data can be recorded and played back, the user plays the disc at a Nx speed in the forward and backward directions. The desired location is searched through the menu method which is visually grasped or the contents of the content are divided into titles or chapters and provided in a menu form.

However, in the conventional method as described above, the N-fold playback method takes a lot of time unnecessarily to search for a desired position, and in the case of the menu method, since the user grasps roughly, the resolution is difficult to grasp the actual content. There is a problem.

Accordingly, the present invention is to solve the above-mentioned problems of the prior art, divides the content contained on the disc into any desired number, and classifies and services the initial image of each partition into index information (edit information) for searching. It is therefore an object of the present invention to provide a method for editing and searching a disk medium recording type system which can realize the editing and searching of contents quickly.

In order to achieve the above object, the present invention provides a method for editing and searching for a content recorded on a disc in a disc media recording system, wherein the content recorded on the disc is divided into a plurality of partitions, and an initial image of each partition is displayed. A first process of recording time information on the disc as edit information, a second process of extracting and storing TOC index information and the edit information from the disc when the disc is loaded, and a search key signal to be inputted; And a third process of generating a split list based on the stored edit information and providing the split list to a monitor, and when selecting a specific position on the split list, a multi-screen of N × N or N × M including the selected specific position. A fourth process of selecting and reproducing the initial images of each of the corresponding divided regions to generate the second and the selected reproduced initial images; A fifth process of generating a multi-screen of N × N or N × M and providing the multi-screen on the monitor, and the fourth process and the fifth process each time a next or previous multi-screen request of the multi-screen is requested. A method of editing and searching for a disc media recording system comprising a sixth step of repeating the operation.

The above and other objects and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention described below with reference to the accompanying drawings by those skilled in the art.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

A key technical aspect of the present invention is that, unlike the aforementioned conventional method of searching for a desired position through visual recognition through N-fold playback or menu method using title or chapter division, any number of contents desired on the disc are desired. The time information of the initial image (I picture image) of each divided area is divided into edited information for searching, and recorded in the TOC area of the disk. It is possible to easily achieve the object of the present invention through such technical means by serving a multi-screen consisting of a divided screen of N × N or N × M which is selectively reproduced. Here, the division of the content recorded on the disc can be divided into title units, chapter units, user set time intervals, arbitrary sections, and the like.

Further, according to the present invention, an arbitrary division screen can be selected from a multi screen consisting of N × N or N × M split screens to play forward or backward or play at high speed, or the initial screen of the divided area at another position. You can also convert the partition by changing to the screen.

1 is a block diagram of a disk medium recording type system suitable for applying a method for editing and searching contents recorded on a disk medium according to the present invention, wherein the control block 102, encoding block 104, recording waveform generation and The laser driving block 106, the servo control block 108, the optical system 110, the RF / servo error generation block 112, the decoding block 114, and the memory block 116 are included.

Referring to FIG. 1, the control block 102 performs overall operation control of an optical disk reproducing apparatus including a microprocessor, for example, when a loading detection signal is input from a disc loading detection sensor (not shown). In response to this, a servo control signal for disc search is generated and provided to the servo control block 108, and the TOC index information reproduced from the disc and transmitted through the decoding block 114 is generated as a partition table according to the present invention. And the editing information (time information of the initial picture (i.e., I picture picture) of each divided area) recorded in the TOC area is stored in the memory block 116, and the video and audio reproduced according to the disc's reproducing operation. A decoding control signal of the signal is generated and provided to the decoding block 114.

In addition, the control block 102 according to the present invention, when the partition is determined, the time information for the initial image of each partition is created in a partition table and transferred to the encoding block 104 for recording in the TOC area of the disc. And select and play the initial video of each divided area by using the edit information when the user requests a search from the user, and generate a multi-screen consisting of the initial video of N × N or N × M and serve it through a monitor. Do this.

Next, the encoding block 104 encodes the recording data to be recorded on the disk into a waveform having an arbitrary pulse width, for example, converting four fourteen modulation (EMF) data into a waveform having various pulse widths of 3T-11T. Converting, and in particular, converting the edit information data created in the partition table and provided from the control block 102 into waveforms having various pulse widths in accordance with the present invention. It is generated and delivered to the laser drive block 106.

Subsequently, the recording waveform generation and laser driving block 106 generates a recording waveform for driving the laser provided in the optical system 110 based on the pulse waveform provided by the encoding block 104 in accordance with the system clock, and generating the recording waveform. A function such as driving a laser is performed using the recorded waveform. Therefore, when the disc medium recording type system performs the recording mode, arbitrary content (data) is recorded on the disc (not shown) mounted on the optical system 110 by the light irradiation method.

On the other hand, the servo control block 108 is, for example, a focus servo driver for driving a focus actuator of an optical pickup in the optical system 110 to move the optical pickup up and down, and a tracking actuator of the optical pickup in the optical system 110. And a tracking servo actuator for driving the tracking actuator of the optical pickup to move the objective lens of the optical pickup in the radial direction, and the focus error signal FE provided from the RF / servo error generation block 112. Based on the tracking error signal TE, a driving signal for driving each actuator in the optical system 110 is generated and provided to the optical system 110.

Next, the optical system 110 includes, for example, an optical pickup having an objective lens, a focus actuator, a tracking actuator, and the like. The optical system 110 converts a reproduction signal read from a disc, not shown, into an electrical signal, thereby RF / servo error. Forward to generation block 112.

Subsequently, the RF / servo error generation block 112 detects an RF signal for reproducing data, a focus error signal for tracking and a tracking error signal, and the like, from an electrical signal provided from the optical system 110, and then retrieves an RF signal (reproduction data). ) Is provided to the decoding block 114 and the focus error signal and the tracking error signal are provided to the servo control block 108.

In addition, the decoding block 114 extracts and decodes the TOC index information and the edit information data recorded in the TOC area according to the present invention from the reproduction data provided from the RF / servo error generation block 112 and controls the block 102. And separate the A / V data extracted from the playback data into video data and audio data, and then demodulate each data into the original data before compression, wherein the demodulated video data is omitted. The demodulated audio data is delivered to the display side and to the speaker side, not shown.

Thus, the demodulated video and audio data is passed to the monitor and speaker side after the DAC process, not shown, so that video and audio reproduced on the disc will be output.

Next, a process of providing a search service by editing a content recorded on a disc in a split screen manner according to the present invention using a disc medium recording type system having the above-described configuration will be described.

FIG. 2 is a flowchart illustrating a process of editing a content recorded on a disc using a disc media recording system according to the present invention in a split screen manner and recording it in a TOC index information area of the disc.

Referring to Fig. 2, while the disk medium recording type system is performing the standby mode (step 202), the control block 102 determines whether an edit key signal is input from user operation means (remote control, operation panel, etc.) not shown. In step 204, if the edit key signal is inputted as a result of the check, the control block 102 selects the division method and the multi-screen composition ratio through a method of providing an edit menu on the monitor. Ask the user (or wait) (steps 206 and 208).

Here, in the division method, the entire content can be selected to be divided into any desired number of sections or desired arbitrary time units, and the multi-screen composition ratio can be selected by, for example, N × N or N × M. Can be. That is, the multi-screen can be set to sizes of 1x2, 2x2, 2x3, 3x3, 3x4, 4x4, 5x6, 6x6, and the like.

Subsequently, when the user selects a partitioning scheme and a multi-screen configuration ratio, the control block 102 creates a partition table to be used as edit information, that is, searches the memory block 116 to display an initial image of each partition (that is, the first frame). Time information of the I pictures) of the extracted information is extracted, and time information of the initial images of the extracted respective divided regions is created as a partition table (step 210).

Next, the control block 102 checks whether or not the user commands the recording of the edit information created in the partition table (step 212). If the check command indicates that the user commands the recording of the edit information, the control block 102 The editing information written in the partition table is passed to the encoding block 104 (step 214), and the resulting editing information is converted into the recording waveform through the encoding block 104 and the recording waveform generation and laser drive block 106 to convert the laser. Are recorded in the TOC area of the disc as additional information (or user information) (step 216).

That is, according to the present invention, the edit information created in the partition table (partition table consisting of temporal information on the initial pictures (i.e., I pictures of the first frame) of each partition region) through the above-described process. Is recorded in the TOC area of the disc, and the edited information thus recorded is utilized for position search and editing of the content by the user.

Next, the desired position is searched on the disc on which the edit information of the partition table is recorded in the TOC area of the disc through the above-described process, or only a specific partition is selected and played back (forward playback or backward playback), or the section of the partition area. The process of changing the description will be described.

3 is a flowchart illustrating a process of searching for an arbitrary position according to an exemplary embodiment by using split screen editing information recorded in a TOC area of a disc according to the present invention.

Referring to Fig. 3, when a user loads a disc into a disc media recording system (step 302), the optical system 110 is driven under control from the control block 102, thereby being reproduced and decoded from the TOC area of the disc. The TOC index information and the edit information according to the present invention are transmitted to the control block 102, and the TOC index information and the edit information (edit information written in the partition table) according to the present invention are transferred to the predetermined block of the memory block 116. Is stored in the region (step 304).

Next, the control block 102 checks whether a search key signal for searching for a desired position among the sections of the content is input (step 306). If the search key signal is input as a result of the check, the control block 102 In step), a partition list is generated using the edit information stored in the memory block 116 and provided through the monitor (step 308), thereby waiting for a user's location selection (step 310).

As a result of the check in the step 310, if the user selects any particular location (i.e., a specific initial image), the control block 102, NxN or N to generate a multi-screen corresponding to the selected particular location Selective playback of each initial video forming a multi-screen of × M, i.e., by performing servo control for selective playback on a disc using the time information of the initial video included in the edit information, each initial video of each partition is selected. Play back (step 312). For example, when the multi-screen has a configuration ratio of 2 × 2, all four initial videos are sequentially played.

Subsequently, the control block 102 reconstructs the initial images selected and reproduced by driving the optical system 110 to reconstruct the initial images provided from the decoding block 114, that is, to reduce the screen size and to configure the multi screen, and then reconstruct the initial images The multi screens of N × N or N × M are generated by using the same, and are provided to a monitor not shown (step 314).

Accordingly, a multi-screen of N × N or N × M is displayed on the monitor (not shown) (step 316), so that the user can see the initial image of the divided region of the specific position selected by the user and the peripheral divided region thereof. . In this case, the control block 102 determines whether the user requests the multi-screen of the next page of the multi-screen, that is, whether to request the next multi-screen or the previous multi-screen of the multi-screen currently being displayed through page up or down. Check (step 318), or check whether the user ends the search (step 320).

As a result of the check in the step 318, if the user requests the next or previous multi-screen, the process returns to the above-described step 312 and repeats the subsequent process, whereby the next or previous multi-user requested on the monitor. The screen is displayed. That is, the user may sequentially monitor the multi-screens by repeating the steps 312 to 318, which enables the user to quickly search for the desired location and also through the location search. The content can be edited smoothly.

If it is determined in step 320 that the user has requested the end of the search (i.e., input of a search end key signal), the control block 102 ends the previous search mode and puts the system into the standby mode. Switch (step 322).

Meanwhile, according to the present invention, whenever the user requests the next or previous multi-screen, the multi-screen is generated and displayed by selectively reproducing and reconstructing the initial images of each divided area for configuring the multi-screen. Unlike the above, unlike the above, in response to the user's request, the multi-screen is generated by pre-selecting and reproducing and reconstructing the initial images constituting each multi-screen at the same time as loading of the disc (ie, stored in the memory block). Of course, it can be set to display the selected multi-screen.

4 is a flowchart illustrating a process of searching for an arbitrary position according to another exemplary embodiment by using split screen type editing information recorded in a TOC area of a disc according to the present invention.

Referring to Fig. 4, when a user loads a disc into a disc media recording system (step 402), the optical system 110 is driven according to control from the control block 102, thereby being reproduced and decoded from the TOC area of the disc. The TOC index information and the edit information according to the present invention are transmitted to the control block 102, and the TOC index information and the edit information (edit information written in the partition table) according to the present invention are transferred to the predetermined block of the memory block 116. Is stored in the region (step 404).

Next, the control block 102 performs servo control for selective reproduction on the disc by using the time information of the initial image of each divided region included in the edit information in the form of a partition table, thereby performing the initial image of each divided region. Play them back (step 406).

Subsequently, the control block 102 reconstructs the initial images provided through the decoding block 114, that is, to reduce the screen size so as to form a multi-screen (step 408), and using the reconstructed initial images, N After generating multi-screens of × N or N × M and storing them in the memory block 116 (step 410), after switching the system to the standby mode when the processing for all initial images is completed (step 412). , Wait for user's next input.

That is, the control block 102 checks whether a search key signal for searching for a desired position among the sections of the content recorded on the disc is input (step 414). In block 102, a partition list is generated using the edit information stored in the memory block 116 and provided through a monitor (step 416), thereby waiting for the user's location selection (step 418).

If it is determined in the step 418 that the user selects a specific position, the control block 102 fetches N × N or N × M multi-screens including the selected specific position from the memory block 116. A multi-screen comprising a plurality of initial images including an initial image of a specific position (split area) selected by the user is displayed on the monitor (step 420).

Accordingly, the user can view the initial image of the divided region of the specific position selected by the user and the surrounding divided region. In this case, the control block 102 determines whether the user requests the multi-screen of the next page of the multi-screen, that is, whether to request the next multi-screen or the previous multi-screen of the multi-screen currently being displayed through page up or down. Check (step 422), or check whether the user terminates the search (step 424).

As a result of the check in the step 422, if the user requests the next or previous multi-screen, the process returns to the above-described step 420 and repeats the subsequent process, whereby the next or previous multi-user requested on the monitor. The screen is displayed. That is, the user may sequentially monitor the multiple screens by performing the repetition of steps 420 and 422, and the user may quickly search for a location that he / she wants, and also through this location search The content can be edited smoothly.

If it is determined in step 424 that the user has requested the end of the search (i.e., input of a search end key signal), the control block 102 ends the previous search mode and puts the system into the standby mode. Switch to step 426.

On the other hand, in the case of the above-described method, there is a problem in that the memory capacity is consumed more than the above-described method, but in this case, the multi-screen (previous or later multi-screen) moves whenever the user ups or downs the multi-screen page. In order to generate the screen, it is not necessary to drive the optical pickup every time to select and reproduce the initial screen (I picture) of each divided screen, and thus have another advantage of minimizing the access time for the user interface.

On the other hand, according to the present invention, when providing a multi-screen of N × N or N × M of a plurality of initial image on the monitor at the request of the user, the user selects any initial image in the multi-screen An image of the divided region may be selectively played back (forward play or backward play), which will be described in detail below with reference to FIG. 5.

FIG. 5 is a flowchart illustrating a process of providing a forward or backward playback service for a specific section edited using an arbitrary initial image on a multi-screen consisting of an initial image of N × N or N × M according to the present invention.

Referring to FIG. 5, when a multi-screen consisting of an initial image of N × N or N × M is being displayed on a monitor according to the embodiments of FIGS. 3 and 4 (step 502), the control block 102 allows a user to perform a multi-screen display. It is checked whether one of the plurality of initial images is selected to select forward or backward reproduction (step 504).

As a result of the check in step 504, if the user selects one of the initial images to be played back (forward or backward), the control block 102 performs servo control using the time information of the reproduced selected initial image in the edit information. And reproduces the image of the corresponding divided region to which the initial image belongs. Accordingly, according to the control from the control block 102, the decoding block 114 decodes the reproduced image of the divided region to display the screen size on the multi-screen. The reconstructed image is transmitted to the display side, and as a result, an image of the corresponding divided region is displayed in the initial image region reproduced and selected on the multi-screen being displayed on the monitor (step 506).

As an example, as shown in FIG. 6, assuming that 3 × 4 multi-screen 604 is being displayed on the monitor 602, and the user has selected to play back the initial picture of # 7, In the initial image area, the image of the divided area will be displayed in the forward or backward direction. In this case, if the user selects backward playback from the initial image of # 7, the image of the divided region to which the initial image of # 6 belongs is substantially displayed in the initial image region of # 7.

As described above, image reproduction and display of the divided region corresponding to the initial image selected and reproduced by the user is performed until the initial image of the adjacent divided region is detected (step 508). As described above, the user on the multi-screen When the reconstructed image of the segment is displayed in one initial image region selected by the user, the user may update the initial image of the segment, that is, change the segmentation point of the image (step 510). At this time, if the initial image of the adjacent divided region is detected as a result of the check in step 508, the control block 102 terminates the playback operation of the system (step 512), and as a result, the playback operation is not performed on the monitor. A multi screen with only the initial picture is displayed.

As a result of the check in the step 510, when the user selects to update the initial image, the control block 102 extracts the time information of the selected viewpoint image, and the current playback contained in the edit information stored in the memory block 116. The time information of the selected initial image is updated with newly extracted time information (step 514). As described above, updating the initial image may be performed at any time until the initial image of the adjacent divided region is detected and playback and display of the divided region are terminated (step 516).

As a result of the check in step 516, when the initial image of the adjacent divided region is detected and playback and display of the divided region are ended, the control block 102 edits information having time information corresponding to the updated initial image. Is extracted from the memory block 116 and transferred to the encoding block 104, thereby rewriting new edit information to the disc (step 518).

As an example, as shown in Fig. 7, n is the current reproduction partition, n + 1 is the next partition, n-1 is assumed to be the previous partition, and n / 1 is the initial of partition n. Assuming that n + 1/1 is the initial image of the divided region n + 1 and n-1 / 1 is the initial image of the divided region n-1, the user points to (n / 1) of the divided region n. When update is selected as the initial image, as a result, the partition n becomes small as (n), while the partition n-1 becomes large as (n-1), and the partition n remains intact.

Therefore, the user can change the segmentation section of the image as desired through the series of processes as described above, thereby enabling effective location search and editing.

Meanwhile, in the preferred embodiment of the present invention, when the user selects to play a random initial image on a multi screen, the present invention has been described as displaying and displaying all the images of the divided region to which the corresponding initial image belongs, but the present invention is not limited thereto. In other words, it can be set to select and play only the I picture from the image of the corresponding partitioned area. In this case, it is possible to realize faster position search and editing than to play and display all images.

As described above, according to the present invention, unlike the above-described conventional method of searching for a desired position through visual recognition through N-fold playback method or menu method using title or chapter division, any desired content on the disc is desired. After dividing by the number, the time information of the initial image (I picture image) of each divided area is created in a table, classified into edit information for searching, and recorded in the TOC area of the disc. By providing a multi-screen of N × N or N × M divided screens reproduced from the disc, it is possible to easily and reliably realize the position search and editing of the recordable disc medium.

1 is a block diagram of a disk medium recording type system suitable for applying a method for editing and searching for contents recorded on a disk medium according to the present invention;

FIG. 2 is a flowchart illustrating a process of editing a content recorded on a disc using a disc media recording system according to the present invention in a split screen manner and recording the same in a TOC area of the disc; FIG.

3 is a flowchart illustrating a process of searching for an arbitrary position according to an exemplary embodiment using edit information of a split screen method recorded in a TOC area of a disc according to the present invention;

4 is a flowchart illustrating a process of searching for an arbitrary position according to another exemplary embodiment by using edit information of a split screen method recorded in a TOC area of a disc according to the present invention;

5 is a flowchart illustrating a process of providing a forward or backward playback service for a specific section edited using an arbitrary initial image on a multi-screen consisting of an initial image of N × N or N × M according to the present invention;

6 is an exemplary screen diagram illustrating an example of a multi-screen used for content editing and searching according to the present invention.

<Description of the code | symbol about the principal part of drawing>

102: control block 104: encoding block

106: recording waveform generation and laser drive block

108: servo control block 110: optical system

112: RF / servo error generation block 114: decoding block

116: memory block

Claims (9)

A method of editing and browsing content recorded on a disc in a disc media recording system, A first process of dividing the contents recorded on the disc into a plurality of divided regions, and recording time information on the initial image of each divided region as edit information on the disk; A second process of retrieving and storing TOC index information and the edit information from the disk when the disk is loaded; A third process of generating a split list based on the stored edit information and providing the divided key to a monitor when a search key signal is input; A fourth process of selecting and reproducing the initial images of the respective divided regions to generate a multi-screen of N × N or N × M including the selected specific position when selecting a specific position on the division list; A fifth process of reconstructing the selected reproduced initial images to generate a multi-screen of N × N or N × M and then providing the multi-screen on the monitor; A sixth process of repeating the fourth process and the fifth process whenever a next or previous multi-screen request of the multi-screen is requested; Editing and searching method of a disc media recordable system comprising a. The method of claim 1, The first process, Dividing the content recorded on the disc into a plurality of partitions; Creating a partition table using temporal information about the initial image of each partition area; Recording the created partition table as the edit information in the TOC area of the disc; Editing and searching method of a disc media recordable system comprising a. The method of claim 2, And the contents are divided into any number of user selections. The method of claim 2, And the contents are divided by arbitrary time units of user selection. The method of claim 2, And the contents are divided in units of titles or chapters. The method according to claim 1 or 2, The method, A seventh process of requesting selective playback of any one of the initial images in the multi-screen on the monitor; An eighth process of reproducing an image of a corresponding partition area to which the reproduced selected initial image belongs and displaying the image on a monitor position of the reproduced selected initial image; A ninth process of repeating the eighth process whenever a play of another initial image among the initial images in the multi-screen is selected; A tenth process of stopping reproduction of the divided region when an initial image of the divided region adjacent to the divided region is detected; Editing and searching method of a disk media recordable system further comprising. The method of claim 6, Requesting to update the reproduction-selected initial image to a new initial image when the image of the corresponding divided region is being displayed; Updating time information of the new initial image with time information of the reproduced selected initial image in the edit information; Rewriting the edit information having the update time information on the disc when reproduction of the image of the corresponding partition is completed; Editing and searching method of a disk media recordable system further comprising. The method of claim 6, In the eighth step, when the reverse playback is selected and the playback-selected initial video is N, the playback and retrieval method of the disk medium recording type system characterized in that it plays back the video of the divided region to which the N-1 initial video belongs. . The method of claim 6, And the eighth step selects and reproduces only the I picture of the image of the corresponding partitioned area.