KR100443273B1 - Method for pointing and reproducing on recorded data optical disc - Google Patents

Abstract

The present invention relates to a data reproducing position designation and reproducing method of an optical disc, wherein a user arbitrarily selects and designates data reproducing position information of main scenes read and reproduced in an optical disc device such as a DVD-Player, Record and store in the nonvolatile memory in the device, and display the main scenes corresponding to the data playback position information stored in the nonvolatile memory on the same one user selection menu screen as a thumbnail-picture, so that the user can By allowing the user to select and specify an arbitrary playback position through a corresponding reduced image, even if the playback position information and the reduced image previously specified by the producer are not recorded on the optical disc such as a DVD, the desired arbitrary reproduction position is desired. It is very useful to be able to select and play the position more efficiently. It is the invention which used.

Description

How to specify and play back data on an optical disc {Method for pointing and reproducing on recorded data optical disc}

The present invention relates to a data playback position designation and reproducing method of an optical disc for allowing a user to select and reproduce any desired main scene among main scenes read out and reproduced in an optical disc apparatus such as a DVD-Player.

In general, a high density optical disc capable of recording and storing a large amount of digital data, for example, a DVD, is widely used. The DVD has a large capacity capable of recording and storing not only digital audio data but also high definition video data for a long time. It is commercially available as a recording medium.

The DVD may include a navigation data recording area in which navigation data necessary for controlling playback of the moving picture data is recorded and a data stream recording area in which a digital data stream such as the moving picture data is recorded and stored. .

Therefore, in an optical disk device such as a general DVD player or the like, when the DVD is inserted into the device, navigation data recorded in the navigation data recording area is read out, stored in a memory in the device, and then the navigation data is used. A DVD reproducing operation of reading out and reproducing moving picture data recorded in the data stream recording area is performed.

Meanwhile, various information for user convenience may be additionally recorded in the DVD, for example, actor introduction information and production process for a specific title recorded and stored as moving image data in the data stream recording area. Information, and a plurality of reproduction start position information selected by the producer as the main scene, may be additionally recorded.

In the DVD player (PV-P), for example, when a specific key corresponding to the "disc menu" is selected and input by the user, as shown in FIG. 1, scene selection and language ( When a user selection menu such as a language, a play movie, or the like is provided through an OS screen, and a user selects and inputs a menu corresponding to the scene selection, the user selection menu shown in FIG. As described above, scenes corresponding to a plurality of playback start position information previously designated by the producer are displayed as thumbnail-picture, so that the user can select and specify a thumbnail of the desired scene.

On the other hand, when the user selects and designates one arbitrary reduced image through the above process, the DVD player searches for any one playback start position information corresponding to the reduced image and plays data from the playback start position. By allowing the operation to be started, the user can select and designate a plurality of reduced images, which are previously designated by the producer, through the OSD screen, and play and view data from the playback position corresponding to the reduced images.

However, the recording of the reduced image as described above may be omitted in the production process according to the DVD standard, and if the reduced image and playback start position information previously specified by the manufacturer are extremely small or not recorded at all. In this case, the user has to search and check his or her desired playback position one by one, and there is a problem that it takes a long time as well as inconvenience in use, and the user arbitrarily selects a playback position different from the playback start position specified by the producer. Since there is no effective plan for designation, it is urgently required to prepare a solution.

Accordingly, the present invention was created in view of the above problems and circumstances, and the user arbitrarily selects and designates data reproduction position information on main scenes read and reproduced in an optical disc device such as a DVD-Player. Record and store in a nonvolatile memory in the device and display the main scenes corresponding to the data playback position information stored in the nonvolatile memory on the same one user selection menu screen as a thumbnail-picture, SUMMARY OF THE INVENTION An object of the present invention is to provide a data playback position designation and playback method of an optical disc for allowing a desired playback position to be designated and designated through a corresponding reduced image.

1 illustrates a disk menu screen provided and displayed on a general optical disk device.

2 illustrates a scene selection menu screen provided and displayed in a general optical disc device.

3 is a diagram showing the configuration of an optical disk apparatus applied to a data playback position designation and playback method of an optical disk according to the present invention;

4 and 5 illustrate a data structure and a program chain structure of a DVD to which the data reproduction position designation and reproduction method of the optical disc according to the present invention are applied, respectively.

6 and 7 show playback position information which is selectively stored by the data playback position designation method of the optical disc according to the present invention;

8 is a flowchart illustrating an operation of a data reproducing method of an optical disc according to the present invention.

※ Explanation of code for main part of drawing

10: optical disc 11: optical pickup

12: RF signal processor 13: digital signal processor

14: decoder 15: reduced image generating unit

16: OSD generation unit 17: memory

18: EEPROM 19: control unit

According to an aspect of the present invention, there is provided a method of reproducing an optical disc using the Internet, the method including: retrieving and checking current data reproducing position information according to a user key input while reading and reproducing data recorded on an optical disc; Storing the searched playback position information and identification information for identifying the optical disk in a non-volatile memory in the apparatus; And after step 2, step 3 of additionally recording data reproduction position information selected by user key input and instruction information for sequentially searching the data reproduction position information stored immediately before the same together with the data reproduction position information. Characterized in that comprises a,

In addition, the data reproducing method of the optical disc according to the present invention, if the disc ID stored in association with the playback position information previously stored in the non-volatile memory in the device and the disc ID of the optical disc inserted and seated in the device is matched with the disc ID Checking the associated stored play position information and reading and reproducing the base image frame corresponding to the play position information from the optical disc; Converting and generating the base image frame into a reduced image and temporarily storing the base image frame in a frame buffer to output a selection menu screen including a plurality of reduced images included on the same screen; And when any one reduced image displayed through the selection menu screen is selected and designated by a user key input, after confirming the playback position information corresponding to the reduced image, performing a data reproduction operation of the optical disc from the playback position. Characterized in that it comprises three steps.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a data reproducing position designation and reproducing method of an optical disc according to the present invention will be described in detail with reference to the accompanying drawings.

Fig. 3 shows a configuration of an optical disc apparatus to which the data reproducing position designation and reproducing method of the optical disc according to the present invention is applied. The optical disc apparatus, for example, a DVD player (PV-P), includes an optical pickup 11 ), RF signal processor 12, digital signal processor 13, decoder 14, D / A converter 15, controller 20, memory 18, EEPROM 19, And an OSD generator 17 and a reduced image generator 16.

On the other hand, the data structure of the DVD 10 inserted and seated in the DVD player, as shown in Figure 4, the video management (VMG: Video Manager) for the disk menu configuration and data playback control, the actual video and And a plurality of video title sets (VTS) on which audio data is recorded. The video management (VMG) includes video management information (VMGI) and respective video recorder (VOB). The video management information (VMGM_VOBs) for each of them is recorded.

The video title set (VTS) includes video title set information (VTSI), video title set management (VTSM_VOBs) for each video record set, and a video title set (VTSTT_VOBs) for each video record set. ), And a plurality of video recording assemblies are recorded and recorded in the title, and in the video recording assembly (VOB), ID number (C_IDN) of cell information which is reproduction control information for the video recording assembly. ) Is recorded to include.

On the other hand, the video recording assembly (VOB) in which the actual video and audio data is recorded corresponds to at least one cell information, and in addition to the physical reproduction information for the reproduction control by the cell information, separate information for the logical reproduction control A program chain (PGC) is recorded and stored in the DVD, and as shown in FIG. 5, in the program chain for logical playback control, a plurality of cell information for controlling playback of a video recording assembly (VOB) Program chain information (PGCI) that specifies the logical playback order of (Cell # 1, Cell # 2 ...) is recorded.

In addition, the information being reproduced should be stored in a system parameter (SPRM). The system parameter is defined in the DVD standard as shown in FIG. 6 and stores information related to the current reproduction. The relevant item of DVD must be stored in memory itself by DVD player. In addition, various system related information such as a title number, a video title number, a title program chain number, and the like are recorded in the system parameter.

On the other hand, in order for the user to select and specify an arbitrary playback position desired by the user, a separate specific key for this should be additionally provided in the DVD player, or additionally provided in the remote controller, and so on. ) Corresponds to the playback position information of the scene currently being played, among the system parameters stored in the memory 17, for example, when a specific key additionally provided as described above is inputted by the user. The title number, the VTS title number, and the title program chain number (Title PGC Number), etc., are recorded and stored in this non-volatile memory.

At this time, in order to accurately know the current playback position, in addition to the system parameter information, the cell number information corresponding to the current playback position, and the disc ID (Disc_ID) information for disc identification are included together. This information can be implemented by using a generation process of Resume information for restarting after stopping during playback of the DVD supported by the DVD.

Thus, as shown in FIG. 7, the user playback position information recorded and stored in the Y pyrom, which is a nonvolatile memory, is included in the disk ID (Disc_ID) and the plurality of playback position information (VTS Number, Title Number). , PGC Number ...), and Next Data Pointer information for indicating the next playback position information are recorded, respectively. Valid flag information for indicating whether to record the play position information as described above may be additionally included and recorded. Any user desired position information is recorded using the user play position information recorded and stored as described above. A method of searching for and playing back a playback position will now be described in detail.

8 is a flowchart illustrating an operation of a data reproducing method of an optical disc according to the present invention. In the control unit 19, as described above, a specific key additionally installed in a DVD player, a remote control, or the like, for example, a user playback position. When the information display button is selected and input (S10), the disk ID information is read from the user playback position information recorded and stored in the EPIROM 18, which is the nonvolatile memory, and it is determined whether or not it matches the disk ID of the DVD inserted in the device. The comparison is searched (S11).

Subsequently, when the disc ID does not match, the comparison result displays a message indicating that the disc ID does not exist through the OS screen, etc. In contrast, when the disc ID matches (S12), the EPIROM The playback position information stored in advance is read and checked (S13).

On the other hand, the control unit 19 may check the value of the valid flag, first determine whether or not the playback position information is recorded, and may perform or omit the playback position information read-out process as described above. And when the valid flag is set to a value indicating recording of the reproduction position information, for example, '1', the control unit reads and confirms the first reproduction position information recorded in association with the disc ID, and reproduces the information. The recording position of the video data corresponding to the position information, for example, the corresponding sector, is searched and read (S14).

Thereafter, the reduced image generation unit is controlled to select and down-sample a base image frame (I-Frame) from among the image frames read and reproduced in the corresponding sector, and to reduce a thumbnail image of a predetermined size. And a temporary image is temporarily stored in a frame buffer (not shown), wherein the frame buffer is configured to have a size equal to the number of pixels of an actual TV screen to a specific area on a memory. It is possible to store two thumbnails in one frame buffer.

On the other hand, when the generation of the reduced image as described above is completed, the controller 19 checks next data pointer information recorded in association with the disc ID, and then reduces the size corresponding to the next play position information. A series of operations for generating and storing an image are repeatedly performed.

In the process of repeatedly performing the above operation, when the next data pointer information has a null data value indicating that the next data pointer is the last data pointer (S16), the controller 19 stops generating the reduced image. In addition, a plurality of reduced images temporarily stored in the frame buffer are displayed on the same user selection menu screen until then, and the operation of the OSD generating unit 16 is controlled to allow the user to select any one reduced image. After superimposing and displaying a cursor to be designated, the cursor is moved to an arbitrary reduced image display position according to a user key input (S17).

Then, when the user moves the cursor to any one reduced image through the above-described process, and selects and inputs the playback key (S18), the control unit 19, the playback position information of the reduced image designated by the cursor The title number, the video title number, the title program chain number, the cell number, and the like are read and confirmed, so that the data reproduction operation is performed from the reproduction position indicated by the reproduction position information.

For reference, the reproduction position information may be recorded and stored in another nonvolatile memory other than the Y pyrom, and the reduced image may be temporarily stored in another volatile memory other than the frame buffer. Incidentally, the present invention can be applied to other optical disk devices other than DVD players.

As mentioned above, preferred embodiments of the present invention are disclosed for the purpose of illustration, and those skilled in the art can improve and change various other embodiments within the spirit and technical scope of the present invention disclosed in the appended claims below. , Replacement or addition would be possible.

The data playback position designation and playback method of the optical disk according to the present invention constituted and constructed as described above, the user can arbitrarily provide data playback position information on the main scenes read and reproduced in the optical disk device such as a DVD-Player. Select and specify, record and store in the nonvolatile memory in the device, and display main scenes corresponding to the data playback position information stored in the nonvolatile memory on the same user selection menu screen as a thumbnail-picture; By allowing the user to select and specify any desired playback position through a corresponding reduced image, even if the playback position information and the reduced image previously specified by the producer are not recorded on the optical disc such as a DVD, Select any desired playback position more efficiently Very useful inventions that are able to.

Claims (9)

delete delete delete delete If the disc ID stored in association with the play position information previously stored in the nonvolatile memory in the device and the disc ID of the optical disc inserted and placed in the device match, the play position information stored in association with the disc ID is checked. Reading and reproducing a base image frame corresponding to the data from the optical disc; Converting and generating the base image frame into a reduced image and temporarily storing the base image frame in a frame buffer to output a selection menu screen including a plurality of reduced images included on the same screen; And When any one reduced image displayed on the selection menu screen is selected and designated by a user key input, after confirming the playback position information corresponding to the reduced image, the data playback operation of the optical disc is performed from the playback position. A data reproducing method of an optical disc, characterized in that it comprises a step. The method of claim 5, The first step may include at least one of a Title Number, a VTS Title Number, a Title Program Chain Number, and a Cell Number information associated with the Disc ID. And confirming reading as reproduction position information. The method of claim 6, In the step 1, it is determined whether to check the playback position information according to the setting value of the valid flag Valid_Flag stored in association with the disc ID. The method of claim 5, In step 2, the operation of converting and generating the base image frame into a reduced image and temporarily storing the base image frame in a frame buffer until the indication information Pointer additionally recorded in the playback position information is recorded as null data. A data reproducing method of an optical disc, characterized in that to perform repeatedly. The method of claim 5, In the step 2, a cursor for allowing a user to select and designate one of a plurality of reduced images included on the selection menu screen is superimposed and displayed as an OSD image. Data playback method of an optical disc.