KR19980030585A - How to play your DVD system - Google Patents

Abstract

According to the present invention, an angle block including image information photographed by a camera at a plurality of locations for a certain scene is included in a file area, and image information photographed at multiple locations of the camera is selected in a disc information file. A playback method using a DVD system for playing a disc containing menu information therein, the method comprising: a first step of storing codes assigned to respective image information corresponding to a camera position; If the position of the camera is selected from the information of the angle block using the menu information, only the corresponding video information is referred to by referring to a code given to the image information corresponding to the position of the selected camera among the codes stored in the first step. A second step of playing; A third step of reproducing all the information corresponding to each camera position in the angle block with reference to the codes stored in the first step if a key signal is provided to allow the DVD system to display all the information in the angle block from the outside; ; And a fourth step of displaying such a situation in the OSD when all the information corresponding to each camera position in the angle block is reproduced in the third step.

Description

How to play your DVD system

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 playback method for allowing a user to view all images shot at various locations for a 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. Also, in recent years, high speed and overwrite have been increasing in density, which is typically represented by the development of short wavelength laser and recording / reproducing technology.

On the other hand, also in the digital image compression technique, a compression scheme using image information before and after time has been put into practical use in a system that has been conventionally compressed only in one TV screen. In particular, a compression scheme called MPEG2 has an information rate of 10 Mbps or less, and the quality of reception level is now achieved in general homes. Therefore, the digital video disc media represented by DVD plays a part in the role of the VTR as a conventional image file together with the appearance of a VDR (recordable type) which is expected to appear in the future.

These DVD discs have a capacity of about 4.7 Gbits, which allows one movie to be recorded on a single disc, and also allows one scene of a movie to be viewed from various locations.

In other words, in a DVD disc, information called an angle block is planted on a track of a disc at regular intervals. The angle block is image information photographed by the camera at various positions for a scene. When the viewer selects a predetermined position, the viewer can view the image information photographed at the position selected by the viewer.

For example, if the camera captures a certain scene at four positions, namely, front, rear, left, and right, the video information recorded at each position of the camera is recorded in an angle block. Only the video information of the front scene is played.

This will be described with reference to FIGS. 1 and 2 as follows.

As shown in FIG. 1, a DVD disc generally consists of a read-in area A, a system area B, a volume management area C and a plurality of files F0 to F99. It consists of a file area D and a read out area E. Substantial movie scenes are stored in files 1 (F1) to (99) of the file area (D).

In addition, an angle block is stored in the file area D at predetermined intervals, and a predetermined position code is assigned to image information corresponding to each position of the camera in the angle block. For example, if the camera shot a certain scene from the front, back, left, and right, respectively, the camera position code A is used for image information taken from the front of the camera, the camera position code B is used for image information taken from the rear of the camera, and the camera is left. The image information photographed at includes a camera position code C, and the image information captured by the camera at the right side includes a camera position code D.

File 0 (F0) is also referred to as a disk information file. The disk information file includes menu information for selecting image information corresponding to each position of the camera in the above-described angle block as shown in FIG. .

At this time, each menu of the menu information is assigned the same code as the camera position codes given to the image information corresponding to each position of the camera in the angle block.

That is, each menu of the menu screen shown in FIG. 2 is 1. camera position code A on 'front', 2. camera position code B on 'back', 3. camera position code C on 'left', 4 'right' The camera position code D is assigned to each.

Therefore, when the viewer selects 'left' from the menu screen of FIG. 2 to view a certain position of the camera, for example, image information taken from the left side, the camera position code C is obtained from the 'left' menu of the menu screen of the DVD system. After the detection, when the angle block is reached during reproduction of the file area D, only the video information corresponding to the code C of each camera position code of the angle block is selected and reproduced.

In such a DVD system, since the conventional angle block reproduction only plays the video information at the selected position, when the user wants to see the screen from various positions, it is troublesome to open the menu screen again and then select another position.

Accordingly, an object of the present invention is to provide a reproduction method capable of viewing all the position image information in the angle block by simple key manipulation when viewing the position image information in the angle block at once.

In order to achieve the above object, the present invention includes an angle block including image information photographed by a camera at a plurality of positions for a certain scene in a file area, and a disk information file is included at a plurality of positions of the camera. A reproduction method using a DVD system for reproducing a disc containing menu information for selecting captured image information, comprising: a first step of storing codes assigned to respective image information corresponding to a position of the camera; If the position of the camera is selected from the information of the angle block using the menu information, only the corresponding video information is referred to by referring to a code given to the image information corresponding to the position of the selected camera among the codes stored in the first step. A second step of playing; A third step of reproducing all the information corresponding to each camera position in the angle block with reference to the codes stored in the first step if a key signal is provided to allow the DVD system to display all the information in the angle block from the outside; ; And a fourth step of displaying such a situation in the OSD when all the information corresponding to each camera position in the angle block is reproduced in the third step.

1 is a format diagram of a DVD disc

2 is a menu configuration diagram for selecting image information according to a camera position

3 is a block diagram of a DVD system for carrying out the playback method of the present invention.

4 is a detailed flowchart showing a preferred embodiment of the reproducing method of the present invention.

* Description of the symbols for the main parts of the drawings *

100: disc 200: DVD player

300: memory 400: key input unit

500: control unit 600: monitor

700: Speaker 800: OSD

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

3 is a block diagram of a DVD system for carrying out the playback method of the present invention, which reads and plays back information recorded on the disk 100 and the disk 100, and shows an angle block of the recorded information of the disk 100. Referring to FIG. For the information, a DVD player for selectively reproducing image information corresponding to each position of the camera, or reproducing image information of the entire angle block, and detecting and outputting camera position codes contained in the disc information file F0 of the disc 100. 200, a memory 300 storing camera position codes detected by the DVD player 200, a key input unit 400 providing a key signal for operating various functions of the DVD player 200, and a key input unit ( A control unit 500 for controlling the DVD player 200 to operate the DVD player 200 in correspondence with the key signal of 400, and a module for displaying a video signal provided from the DVD player 200. Emitter 600 is configured for reproducing state of the speaker 700, and an angle block for outputting the audio signal provided from the DVD player 200 to the OSD unit 800 to give displays the OSD (On Screen Display).

4 is a detailed flowchart showing a preferred embodiment of the reproducing method of the present invention, which will be described below with reference to FIG. 3.

In FIG. 4, when the power supply state of the DVD system is turned on (S1), the control unit 500 controls the DVD player 200 to display information in the lead-in area of the disc 100 and the disc information file F0. Control to read the information (S2).

The DVD player 200 detects control information necessary for controlling the DVD player after reading and playing the information in the lead-in area of the disc 100 and the information of the disc information file F0 under the control of the control unit 500. To the control unit 500.

On the other hand, if a play key signal is provided from the key input unit 400 to the control unit 500 (S3, S4, S5, S6), the control unit 500 controls the DVD player 200 to play the disc 100. In this case, when a key signal for setting a camera position is provided from the key input unit 400 before or during playback (S3), the control unit 500 once stops the operation of the DVD player 200. (S8, S9), the menu screen for setting the camera position is displayed (S10). The DVD player 200 reads and reproduces menu information as shown in FIG. 2 from the disc information file F0 of the disc 100 under the control of the controller 500 and provides the same to the monitor 600.

At this time, the camera position codes are read and reproduced from the disc information file F0, and the menu information includes the camera position codes described above. These camera position codes are not shown in the figure, but are detected by an MPEG decoder inside the DVD player. The control unit 500 allows the camera location codes to be stored in the memory 300.

When the user looks at the menu screen and selects a certain camera position, for example, the left side (S11), the control unit 500 stores the DVD player 200 so as to play only the image information shot from the left side for any scene. To control.

The DVD player 200 reads and plays back the file areas F1 to F99 of the disc 100 under the control of the control unit 500. When the information on the angle block is read out, the camera of the information on the angle block is read. Reproduces only the image information photographed from the left side and provides it to the monitor 600 (S7, S3, S4, S5, S12, S13, S14).

That is, the information on the angle block read from the disk 100 is provided to the MPEG decoder inside the DVD player 200, wherein the controller 200 captures from the left side of the camera among the camera position codes stored in the memory 300. The camera position code C attached to one piece of video information is detected and provided to the MPEG decoder. Therefore, the MPEG decoder determines information having the same code as the camera position code C provided from the controller 200 among the information about the angle block read from the disc 100, and then decodes and outputs only the image information having the corresponding code. will be.

On the other hand, when the user uses the key input unit 400 to provide a key signal for displaying the entire information in the angle block to the control unit 500 (S4), the control unit 500 stores the camera position code stored in the memory 300, that is, After detecting all A, B, C, and D, provide it to MPEG decoder in DVD system, and control OSD unit 800 so that the characters (for example, 'angle play') are displayed. (S18).

The MPEG decoder of the DVD player 200 determines the respective codes in the angle block read from the disc 100 by referring to the camera position codes provided from the control unit 500, and decodes and outputs image information corresponding to the corresponding codes ( S15, S16, S17, S19). In addition, the OSD unit 800 outputs a text signal indicating that image information corresponding to all camera positions is being displayed on the output signal of the DVD player 200 under the control of the controller 500 (S18).

Thereafter, the controller 500 controls the OSD unit 800 to stop the OSD operation after each image information in the angle block is reproduced (S20).

As described above, the present invention has the effect of viewing all the position image information in the angle block with a simple key operation in the DVD system.

Claims (1)

The file area includes an angle block composed of image information photographed by the camera at a plurality of positions for a certain scene, and a menu for selecting image information photographed at multiple positions of the camera in a disc information file. In a playback method using a DVD system for playing a disc containing information: A first step of storing codes assigned to respective image information corresponding to the position of the camera; If the position of the camera is selected from the information of the angle block using the menu information, only the corresponding video information is referred to by referring to a code given to the image information corresponding to the position of the selected camera among the codes stored in the first step. A second step of playing; A third signal for reproducing all image information corresponding to each camera position in the angle block with reference to the codes stored in the first step when a key signal is provided so that all the information in the angle block is displayed to the DVD system from the outside; step; And a fourth step of displaying such a situation in the OSD when all the video information corresponding to each camera position in the angle block is played in the third step.