KR100209416B1 - Method for converting scene level of a dvd system - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a digital video disc (DVD) system, and more particularly, to a scene level method for selectively playing scenes classified into a plurality of levels according to the contents of a video scene. A scene level changing method using a DVD system, by selectively playing scenes of each level with reference to scene level codes assigned to each scene of the image in order to distinguish levels according to the contents of each scene of the image. A first step of storing codes; When the viewer selects a level of a certain scene, a scene of a level corresponding to the same code is compared by comparing a scene level code corresponding to the level of the selected scene among the stored scene level modes with scene level codes assigned to each scene. Selectively reproducing the bay; A third step of detecting and storing a preset playback position on the disc while performing the second step; A fourth step of displaying, by the OSD, a menu screen for changing the scene level when the DVD system enters the scene level changing mode; A fifth step of displaying, by the OSD, a menu screen indicating a playback position stored in the third step when the viewer selects a scene of a new level by referring to the menu screen displayed on the OSD screen; When the viewer selects a predetermined playback position with reference to the menu screen indicating the playback position of the fifth step, playback is performed from the selected location, and among the scene level codes stored in the first step, And a sixth step of selectively reproducing only scenes of the level corresponding to the same code by comparing the scene level codes corresponding to the levels with the scene level codes assigned to the respective scenes.

Description

How to change scene level of DVD system

1 is a disc format diagram of a DVD disc.

2 is a menu screen for changing a scene level.

3 is a block diagram of a DVD system for performing the scene level changing method of the present invention.

4 is a detailed flowchart illustrating a preferred embodiment of the present invention.

5 is a menu screen diagram for determining a playback position according to a preferred embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

100: disc 200: DVD player

300: memory 400: OSD unit

500 control unit 600 monitor

700: speaker 800: key input unit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scene level method in which a digital video disc (DVD) system can selectively reproduce scenes classified into a plurality of levels according to the contents of a video scene.

The basic technology of optical discs for non-contact reading using laser light has long been established. Since then, the spread of reproduction-only devices including LD (Laser Disc) and CD (Compact Disc) has been spread to general homes, and the recording and reproducing apparatus of additional recording type and rewriting type has been put to practical use. In recent years, high-speed and over-lighting have been inherently densified by the development of short wavelength lasers and recording / reproducing technologies.

On the other hand, in the digital image compression technology, the compression method using the image information before and after the time has been put into practical use in the method that the compression process was conventionally performed within only one TV screen. In particular, the compression method called MPEG2 has reached a reception level of image quality in general assumptions at an information rate of 10 Mbps or less. Accordingly, digital moving picture disc media represented by DVDs have emerged and play a part in the role of VTRs as conventional image files along with VDRs (recordable types) which are expected to appear in the future.

The disc of the DVD has a capacity of about 4.7Gbit, so that one movie can be recorded on one disc and can be selectively played according to the contents of the movie scene. In other words, record all the movies on the disc without deleting them, but record them to distinguish adult or youth according to the contents of each scene, and play the corresponding scene when the viewer selects adult use, and the viewer uses the youth In this case, only scenes corresponding thereto can be selectively played.

This will be described with reference to FIGS. 1 and 2 as follows. As shown in FIG. 1, a disc of a DVD generally has a read-in area A, a system area B, a volume management area C, and a plurality of files (F0 to F99). File area (D) and read out area (E). At this time, files 1 (F1) to 99 (F99) of the file area D contain a substantial movie, and each scene of the movie is classified and recorded in a plurality of levels according to the contents. For example, in three levels, the scenes for children are assigned code 010, the scenes for teens are code 011, and the scenes for adults are code 100. Only scenes to which code 010 is assigned are selectively played. When a viewer selects teen use, a scene to which code 010,011 is assigned is played. When a viewer selects adult use, all scenes to which code 010,011,100 are assigned are played.

File 0 (F0) is also called a disk information file, and a menu screen is substantially stored in this disk information file. In addition, the disc information file FO contains codes for reading the levels of the respective scenes of the movie contained in the files 1 (F1) to (99). Therefore, the process of playing only scenes corresponding to, for example, adolescents during disc playback is as follows.

That is, in order to select the level of the scene, the viewer must first be able to see the menu screen. Therefore, a menu screen as shown in FIG. 2 is detected from file 0 (F0) and displayed on the screen. When the viewer selects, for example, youth, code 010 and code 011 for playing the youth scene are converted to file 0 (F0). Detect from

On the other hand, when the disc starts playing, the actual movie from files 1 (F1) to 99 (F99) and the code assigned to distinguish the level of each scene of the movie will also be played together.

Therefore, the scenes corresponding to code 010 and code 011 among the codes reproduced from files 1 (Fl) to 99 (F99) can be read out, and only the read scenes can be displayed. In such a DVD, it will be necessary to change the level of the scene during the disc playback. Therefore, if it is conventionally necessary to change the level of a scene while the disc is being played, once the disc is stopped and the menu screen as shown in FIG. 2 is again displayed, the menu screen is selected to select another scene level. Then when you play the disc again, only the scenes corresponding to the newly selected scene level will be played.

However, this scene level change method takes a long time because it stops playing the disc and selects a new scene level through the menu screen.

Therefore, in the present invention, in changing the scene level, the DVD system allows the scene level to be changed immediately through the OSD (On Screen Display) screen while the disc is being played continuously, and the playback time of the changed scene can be changed. The purpose of the present invention is to provide a method for changing a scene level.

In order to achieve the above object, the present invention selectively reproduces a scene of each level by referring to scene level codes assigned to each scene of the image to distinguish levels according to the contents of each scene of the image recorded on the disc. A scene level changing method, comprising: a first step of storing each scene level code; When the viewer selects a level of a certain scene, a scene of a level corresponding to the same code is compared by comparing a scene level code corresponding to the level of the selected scene among the stored scene level codes with scene level codes assigned to each scene. Selectively reproducing the bay; A third step of detecting and storing a predetermined playback position on the disc while performing the second step; A fourth step of displaying a menu screen for changing a scene level through an OSD when the DVD system enters a scene level changing mode; A fifth step of displaying, by the OSD, a menu screen indicating a playback position stored in the third step when the viewer selects a scene of a new level by referring to the menu screen displayed on the OSD screen; When the viewer selects a predetermined playback position with reference to the menu screen indicating the playback position in the fifth step, playback is performed from the selected location, and the level of the newly selected scene among the scene level codes stored in the first step is performed. And a sixth step of selectively playing only scenes of a level corresponding to the same code by comparing the scene level codes corresponding to the scene level codes with the scene level codes assigned to the respective scenes.

Hereinafter, with reference to the accompanying drawings will be described in detail the present invention. FIG. 3 is a block diagram of a DVD system for performing the scene level changing method of the present invention. When the scene level of the disk 100 and the image of the disk 100 having the configuration shown in FIG. The DVD player 200 and the disc information file detected by the DVD player 200 to selectively play only scenes of the corresponding level with reference to codes corresponding to the selected scene level among the scene level codes included in the file F0 ( Memory 300 to store codes of each scene level of F0), OSD unit to OSD (On Screen Display) screen to set scene level change when scene level change mode during normal playback of disc 100 If the scene level is to be changed during the normal playback of the DVD player 200, the OSD unit 400 is controlled to display a screen for selecting a new scene level, and the viewer newly changes the scene level. When the scene level is selected, the scene corresponding to the selected new scene level can be played with reference to the scene level codes of the disc information file F0 stored in the memory 300. When the viewer selects a scene of the new level, the new level is displayed. To control the DVD player 200 so that the scene can be played from the start point of the disc, the point corresponding to the point of time switched to the scene level change mode, or the point corresponding to the point of time when the key input for changing the scene level is completed. 500, a monitor 600, a speaker 700, and a key input unit 800 that provides key signals for changing a scene level.

At this time, the DVD player 200 digitally processes the deck unit 210 for reading audio and video information data recorded on the disc 100, the audio and video information data read by the deck unit 210, and the sub data. The digital signal processor 220 detects and decodes and outputs audio and video information data provided from the digital signal processor 220, and detects and stores scene level codes included in the disc information file F0 of the disc 100. Provided to (300) and provided from MPEG decoder (230) and MPEG decoder (230), which decode only scenes of the level selected by the viewer by reading scene level codes detected in file area (D) of disc (100). An audio D / A (Digital / Analog) converter 240 converts the audio data into an analog signal and outputs the analog signal to the speaker 700 by processing the audio signal. A video D / A converter 260 for converting video data provided from the audio signal processor 250 and the MPEG decoder 230 into analog R (Red), G (Green), and B (Blue) signals and outputting the same; The encoder 270 is configured to process a video signal for converting the analog R, G, and B signals provided from the video D / A converter 260 into a composite video signal and provide the video signal to the monitor 600.

FIG. 4 is a detailed flowchart showing a preferred embodiment of the scene level changing method of the present invention. Referring to FIG.

First, when a mode switching key signal for selecting a scene level is provided from the key input unit 800 (S1), the control unit 500 controls the DVD player 200 and stored in the disc information file F0 of the disc 100. In operation S2, a menu screen for selecting each scene level (FIG. 2) and respective codes of scene levels are read.

The deck unit 210 of the DVD player 200 controls a menu screen (FIG. 2) and a scene for selecting each scene level contained in the disc information file F0 of the disc 100 under the control of the control unit 500. FIG. The level code is read and provided to the digital signal processor 220, and the digital signal processor 220 processes the digital signal and provides the digital signal to the MPEG decoder 230.

The MPEG decoder 230 detects a scene level code of the disc information file F0 and provides it to the control unit 500 and the memory 300 (S3), and expands the menu screen to the video D / A converting unit 260. The video D / A converter 260 converts the extended menu screen into analog R, G, and B signals and provides the same to the encoder 270. The encoder 270 is a video D / A converter 260. The menu screen provided from) is converted into a composite video signal, and the video screen is processed and provided to the monitor 600.

Accordingly, the viewer may select a scene level by viewing a menu screen as shown in FIG. 2 (S4). When the viewer provides a key signal for selecting the youth for example using the key input unit 800 (S5), the controller 500 provides the MPEG decoder 230 with a level code corresponding to the youth. At this time, in the case of an adult, a password or the like may be input so that a teenager or a child cannot see (S6) the adult scene may be played only when the input password matches the preset password (S7). That is, when the viewer provides a key signal for selecting the youth (S5), the control unit 500 provides the MPEG decoder 230 with a level code corresponding to the youth, and the password matches when the viewer selects the adult. Only when (S7) provides the level code corresponding to the adult to the MPEG decoder 230. After performing such a process, the controller 500 controls the DVD player 200 to sequentially start playback from the file 1 (Fl) of the file area D. FIG. Therefore, code assigned to distinguish between the actual movie and the level of each movie scene will also be played. The digital signal processor 220 digitally processes the video and audio data provided from the deck unit 210 and provides the MPEG signal to the MPEG decoder 230. The digital signal processor 220 detects sub data included in the video and audio data streams, and controls the control unit 500. To provide.

At this time, the above-described sub data are time data inserted into the video and audio data streams at regular intervals, and this time data represents the relative time at the current playback position of the entire playback time of the disc 100. Therefore, when the sub data is detected, the current playback position on the disc can be known.

The MPEG decoder 230 reads the same code as the scene level code of the disc information file F0 provided by the control unit 500 among the scene level codes provided from the digital signal processor 220 and decodes only a scene having the corresponding code. This is then provided to the video D / A converter 260. In addition, the MPEG decoder 230 also decodes video and audio data corresponding to a movie or music video provided from the digital signal processor 230, respectively, to the video D / A converter 230 and the audio D / A converter 240, respectively. To provide. Therefore, the monitor 600 will display only the movie scene of the level selected by the viewer (S8, S10).

When the viewer wants to change the scene level, for example, from youth to adult or from adult to youth while the movie scene of a certain level is being played, the viewer can change the scene level change key signal through the key input unit 800. It provides to the control unit 500 (S9).

If a scene level change key signal is provided during playback, the controller 500 analyzes the sub data provided from the digital signal processor 220 to detect a playback position on the disc 100 at the time when the scene level change mode is switched. 500 is stored in the internal memory (S11). Then, the control unit 500 reads the scene level code of the disk information file F0 stored in the memory 300 and refers to the OSD so that the menu screen for setting the scene level change is OSD on the monitor 600. The control unit 400 (S12). The OSD unit 400 OSDs the screen for setting the scene level change under the control of the controller 500 on the monitor 600. The viewer may view the OSD screen on the monitor 600 and change the scene level. When the viewer provides a key signal for selecting the youth for example using the key input unit 800 (S13), the key signal for selecting the youth is analyzed by analyzing the sub data provided from the digital signal processor 220. The playback position on the disc 100 is detected at the time point at which it is provided and stored in the memory inside the control unit 500 (S14).

However, when the viewer selects an adult level (S13), the playback position on the disc 100 is detected at the time when a key signal for selecting an adult is provided and stored in the memory inside the control unit 500 (S15). A password and the like are inputted so that the adult scene can be played only when the input password matches the preset password (S17). Thereafter, the controller 500 controls the OSD unit 400 to display the menu screen as shown in FIG. 5 (S18). At this time, in the menu screen of FIG. 5, (1.starting point) is set to the new level selected by the viewer. The scene is to be played back from the start point of the disc (2. Scene level change mode switching point) from the playback position on the disc 100 at the time when the scene is switched to the scene level change mode stored by the above-described S11 process. (3. Scene level change designation completion point) is for reproducing from the playback position on the disc 100 when the input of the scene level selection key signal stored by the above-described step S14 is completed.

When the viewer selects a certain position, for example (1. starting point) by viewing the OSD screen (S19), the control unit 500 controls the deck unit 210 to perform playback from the start position of the disc 100 again. If (2. scene level change mode switching point) is selected (S19), the deck unit 210 is controlled to reproduce the playback position on the disc 100 at the time when it is switched to the scene level change mode stored by the above-described step S11. When (3. scene level change designation completion point) is selected (S19), the deck unit 210 is controlled to control playback of the scene level selection key signal stored in step S14. Playback is performed from the playback position on the disc 100 of the user.

Meanwhile, the code of the scene level selected in step S13 is provided to the MPEG decoder 230.

For example, the MPEG decoder 230 decodes only a scene having an adult scene level code, and then, when a youth scene level code signal is provided from the controller 500, each scene level provided from the digital signal processor 220. Among the codes, the same code as the youth scene level code provided by the control unit 500 is read, only the scene having the corresponding code is decoded (S20), and the video D / A converter 260 is provided.

Meanwhile, the analog audio signal output from the audio D / A converter 240 is processed by the audio signal processor 250 to provide an audio signal to the speaker 700, and is output from the video D / A converter 260. The analog R, G, and B signals are converted by the encoder 270 into a composite video signal, processed into video signals, and provided to the monitor 600.

In the above-described preferred embodiment of the present invention, even if the viewer selects a new scene level, for example, (1.start point), (2.scene level change mode switching point), 3. In the actual implementation, after setting the positions on the disc to be reproduced at the new scene level, the playback positions on the preset disc are stored using the above-described sub data. When the viewer selects a new scene level, it may be desirable to select one of the playback positions on the stored disc so that the scene of the new level is played from the selected playback position.

As described above, the present invention can immediately change the scene level while playing a disc, and also allows the viewer to variably select the playback time of the scene whose level has been changed, which is very convenient.

Claims (3)

In the scene level changing method using a DVD system, selectively playing scenes of each level with reference to the scene level codes assigned to each scene of the image to distinguish the levels according to the contents of each scene of the image recorded on the disc. A first step of storing respective scene level codes; When the viewer selects a level of a certain scene, a scene of a level corresponding to the same code is compared by comparing a scene level code corresponding to the level of the selected scene among the stored scene level codes with scene level codes assigned to each scene. Selectively reproducing the bay; A third step of detecting and storing a preset playback position on the disc while performing the second step; A fourth step of displaying, by the OSD, a menu screen for changing the scene level when the DVD system enters the scene level changing mode; A fifth step of displaying, by the OSD, a menu screen indicating a playback position stored in the third step when the viewer selects a scene of a new level by referring to the menu screen displayed on the OSD screen; When the viewer selects a predetermined playback position with reference to the menu screen indicating the playback position of the fifth step, playback is performed from the selected location, and among the scene level codes stored in the first step, And a sixth step of selectively playing only scenes of a level corresponding to the same code by comparing scene level codes corresponding to levels with scene level codes assigned to each scene. The method of claim 1, wherein the second step comprises: determining whether to input a password when the viewer selects a level of a scene; Requesting a password input if a password is requested for the level of the scene selected by the viewer; Determining whether a password matches the preset password when the password is input; If a password is not required for the level of the scene selected by the viewer, or if the input password matches a preset password, a scene level code corresponding to the level of the selected scene among the stored scene level codes, A method of changing a scene level of a DVD system comprising comparing scene level codes assigned to scenes and selectively playing only scenes of a level corresponding to the same code. The method of claim 1, wherein the fifth step comprises: determining whether to input a password when the viewer selects a level of a new scene; Requesting a password input if a password is requested for the level of the scene newly selected by the viewer; Determining whether a password matches the preset password when the password is input; And if a password is not required for the level of the scene newly selected by the viewer, or if the input password matches the preset password, a menu screen indicating the playback position stored in the third step is displayed by the OSD. How to change the scene level of your system.