KR19980030593A - How to Play an Optical Disc System - Google Patents

Abstract

The present invention relates to a reproducing method using an optical disc system for reproducing a disc, comprising: a first step of performing a jump after storing a current reproducing position when a jump command is provided during normal reproducing of a disc; Performing a playback from the jumped position and, if a return playback command is provided, jumping back to the playback position before the stored jump; And a third step of performing playback from the playback position before the jump.

Description

How to Play an Optical Disc System

The present invention relates to an optical disc system, in particular, when a playback position is jumped in an undesired state during playback, the optical disc system searches for a playback position before the jump and plays back from the playback position before the jump. It is about a method.

Computer and communication technologies are developing remarkably toward the 21st century information society. Accordingly, the amount of information such as voice, code information, screen, and document information is increasing at a tremendous speed. Therefore, it is urgent to develop a device and a video that can effectively store and quickly process it.

As such an information recording medium, magnetic tapes and magnetic disks to which magnetic recording has been applied have been mainly used, but as the information has exploded, new high density recording media capable of storing as much information per unit area as possible have been needed. With the recent development of optical technologies such as lasers, optical recording technologies have been realized, and optical discs have been spotlighted as new mass storage media.

Conventional optical disc reproducing systems, namely optical disc players, include a compact disc player (CDP), a laser disc player (LDP), and a compact disc graphic player (CDGP). In general, a compact disc player is a device capable of playing only voice, and a laser disc player and a compact disc graphic player are devices capable of simultaneously playing back video and audio.

Recently, a video compact disc player capable of playing video and audio on a disc having the same size as a general compact disc has also been developed and used.

On the other hand, such optical disc reproducing systems reproduce images and / or audio recorded on the optical disc and output them through a screen and / or a speaker, and have higher signal-to-noise ratio than conventional image and / or audio reproducing apparatus, resulting in better image quality and / or Or the signal is reproduced with sound quality, and if there is no noise caused by irregular reproduction and advancement, there are various advantages such as very little distortion and random access without ghost. Is in.

A disc of such an optical disc system is typically composed of a lead in area A, a data area B, and a lead out area C as shown in FIG.

In the lead-in area A, a menu of data contained in the data area is stored as a table of contents (TOC), and in the data area (B), a substantial movie program or a karaoke program is stored. ) Contains the end data for the data area B program and the like.

For example, in the case of a karaoke disc, a plurality of songs and a background screen suitable for each song will be stored in the data area B, and the lead-in area A will include the total number of each song and the number of songs in the data area. Data such as start time, end time, total music time, and the like will be recorded, and lead-out area C will contain data relating to the end of reproduction of the data disc.

Therefore, when reproducing such an optical disc system, the position of each track of the disc is determined by using the TOC information contained in the lead-in area of the disc, and when a certain track is selected, the corresponding track is searched to perform playback.

In such an optical disc system, conventionally, when the playback position is suddenly changed by pressing a jump key or the like in an undesired state during normal playback, playback cannot be performed again at the playback position before the jump key is pressed.

In other words, in the conventional optical disc system, if the playback position on the disc suddenly changes during playback, the playback position is changed again from the changed playback position or from the beginning of the track including the previous playback position. Playback will not be possible again.

Accordingly, an object of the present invention is to provide a reproducing method of an optical disc system, in which, when a disc is suddenly jumped in an undesired state during disc reproducing, the reproducing is performed from the reproducing position before the jump.

The present invention provides a reproduction method using an optical disc system for reproducing a disc, comprising: a first step of performing a jump after storing a current reproduction position when a jump command is provided during normal reproduction of the disc; Performing a playback from the jumped position and, if a return playback command is provided, jumping back to the playback position before the stored jump; And a third step of performing playback from the playback position before the jump.

1 is a general configuration diagram of an optical disc.

2 is a general configuration diagram of an optical disc system.

3 is a detailed flowchart showing a preferred embodiment of the automatic memory reproducing method of the present invention.

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

100: disc 200: disc player

300, 400: D / A converter 500: controller

600: key input unit

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

FIG. 2 is an overall configuration diagram of an optical disc system for carrying out the reproducing method of the present invention. The disc 100, the TOC information contained in the lead-in area A of the disc 100, and the data area of the disc 100 The video data of the disc player 200 and the program data reproduced by the disc player 200 which read and reproduce the program data recorded in B) and the sub data recorded at predetermined intervals on the track of the disc 100 are output by analog conversion. D / A (Digital / Analog) converter 300, D / A converter 400 for converting and outputting the audio data of the program data reproduced by the disc player 200 to the analog, disc player 200 When a jump key signal is provided from the key input unit 500 and the key input unit 500 that provides a key signal for a predetermined function of the electronic device, the sub data provided from the disc player 200 is referred to on the disc 100. After determining the playback position before the program and storing it in the internal memory, the disc player 200 is controlled to switch to the jump mode, and when the return playback key signal is supplied from the key input unit 500 again, The controller 600 controls the disc player 200 to jump back to the playback position before the jump stored in the memory.

FIG. 3 is a detailed flowchart of a reproducing method of the present invention performed using the optical disc system shown in FIG. 2, which will be described below with reference to FIG. 2.

First, in the normal play mode of the optical disc system (S1), the disc player 200 reads and plays the program data recorded on the disc 100, but the sub data recorded at regular intervals on the track of the disc 100 is controlled by the controller 600. ), And the image data among the reproduced program data is provided to the D / A converter 300, and the audio data is provided to the D / A converter 300.

Therefore, the D / A converter 300 converts the image data provided from the disc player 200 into an analog and provides the same to a display device (not shown) such as a TV monitor.

In addition, the D / A converter 400 converts voice data provided from the disc player 200 into analog and provides the same to an output device (not shown) such as a speaker.

On the other hand, the control unit 600 reads the sub data provided from the disc player 200 to detect the current playback position of the disc. The above-mentioned sub data is recorded in the track of the disc 100 at regular intervals, and the time data (Commonly referred to as Q data). At this time, the Q data represents a reproduction time required for reproduction to the recording position of each sub data recorded at regular intervals on the track of the disc 100 during normal reproduction of the disc.

Therefore, by reading the sub data, the current reproduction position on the disc can be known.

As such, when the user provides the jump key signal to the controller 600 by using the key input unit 500 during the normal play mode (S2), the controller 600 reads the sub data provided from the disc player 200. (S3) The time data corresponding to the current playback position on the disc 100 is stored in the internal memory (S4).

Thereafter, the controller 600 controls the disc player 200 to search for the disc 100 jump position (S5).

The disc player 200 searches for a jump position on the disc 100 under the control of the control unit 600. When the search is completed (S6), the controller 600 controls the disc player 200 to perform playback from the jump position on the disc 100 (S7).

In this way, if the return playback key is provided from the key input unit 500 to the controller 600 while the playback is performed from the jump position (S8), the controller 600 refers to the playback position data before the jump stored in the internal memory. The disc player 200 is controlled so that playback is performed again from the playback position before the jump (S9).

Therefore, the disc player 200 searches for the playback position before the jump under the control of the controller 500, and when the search is completed (S10), the disk player 200 resumes playback from the playback position before the jump (S11).

As described above, the present invention has a very convenient effect when it is suddenly jumped in an undesired state during disc playback, and can be played back from the playback position before the jump.

Claims (1)

In a playback method using an optical disc system for playing a disc: A first step of providing a jump command during normal playback of the disc and storing a current playback position and then performing a jump; Performing a playback from the jumped position and, if a return playback command is provided, jumping back to the playback position before the stored jump; And a third step of performing playback from the playback position before the jump.