KR100203715B1 - Method for processing a multidefault function in a vedio compact disk player - Google Patents

Abstract

The present invention relates to a method for executing a multi-default selection function in a video compact disc player. reading a corresponding list of vcd; (B) reading the list header data of the list to determine whether the list is a selection list or a play list; (C) if the list discriminated in the step (b) is a selective lease, it is discriminated whether the selected list is a multi-default selection list, and if it is a multi-default selection list, Reproducing a play item; (D) When multi-default key signal for multi-default function execution is input, reads the vcd data, detects an entry corresponding to the current playback position, reads a selection offset value corresponding to the detected entry, reads list information about the offset value, starts PBC playback, And reproducing the item.

Therefore, the present invention has the effect of enabling PBC playback for the multi-default selection list to be performed smoothly during PBC playback.

Description

How to Perform Multi-Default Selections in Video Compact Disc Players

The present invention relates to a method for executing a playback control function of a video compact disc player, and more particularly, to a method for executing a multi-default selection function in a video compact disc player capable of performing a multi-default selection function in execution of a playback control function .

As a typical optical disc player, a compact disc player (CDP), a laser disc player (LDP) and a compact disc graphic player (CDGP), a video compact disc player (VCDP: Recently, a digital video disk (DVD) using a moving picture compression technique of MPEG-2 has been developed, and it has been developed in a 12 cm optical disk such as a current CD. It is possible to record and reproduce data of several gigabytes (gigabytes), including moving pictures, and it is still in progress to improve the performance thereof.

On the other hand, such optical disc players reproduce video and / or audio recorded on an optical disc and output it through a screen and / or a speaker, and have higher signal-to-noise ratios than conventional video and / And it can reproduce a signal with high quality and / or sound quality, does not generate noise due to irregular reproduction and modulation, has very few distortion, has no ghost (virtual), and has random accessibility. The trend is spreading.

On the other hand, when the version 1.1 disk and the version 2.0 disk are used for the type VCD player of the optical disk player, the data of the playback control function (PBC) is recorded on the VCD of the dual version 2,

Such a playback control function is a function that allows a user to browse and reproduce desired data according to a menu screen for each corresponding offset value. The user can selectively set and reproduce desired data through a menu screen And is widely used.

Further, the data for such a playback control function is recorded in a play sequence descriptor (PSD) area constituting track 1 of the version 2.0 disk.

The PSD area for the playback control function is composed of a total of 170 bytes of a selection list and a play list.

On the other hand, data corresponding to the offset value of the PlayItem of this selection list is generally recorded in the PSD area, but in the case of a small number, data about the offset value is given to the track object, Tracks, and these selection lists are referred to as multi-default selection lists.

An object of the present invention is to provide a video compact disc player capable of playing back a multi-fault selection list during playback control (PBC) And a method for executing the multi-default selection function.

According to a preferred embodiment of the present invention for achieving this object, (a) when PBC (playback control) reproduction is executed, PSD. (b) reading the list header data of the list to determine whether the list is a selection list or a play list; and (c) (C) If the list discriminated in the step (b) is a selection list, it is discriminated whether the selection list is a multi-default selection list. If the selection list is a multi-default selection list, Reproducing the corresponding play item; and (d) inputting a multi-default key signal for executing the multi-default function. reads the vcd data, detects an entry corresponding to the current playback position, reads a selection offset value corresponding to the detected entry, reads list information about the offset value, starts PBC playback, And reproducing the item.

FIG. 1 is a schematic block diagram of a video compact disc player for practicing the present invention; FIG.

FIG. 2 is a detailed flowchart for performing a multi-default selection function execution method according to a preferred embodiment of the present invention; FIG.

DESCRIPTION OF THE REFERENCE NUMERALS

10: Pickup and actuator section

20: RF signal amplification and servo signal processing section

30: motor drive unit 40: key input unit

50: Microcomputer 60: Digital signal processor

70: MPEG decoder 80: Audio signal processor

90: Video signal processing unit 100: Speaker

110: Flood

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

1 is a schematic block diagram of a video compact disc player for carrying out the present invention.

1, a video compact disc player for carrying out the present invention includes a pickup and actuator unit 10, a radio frequency (RF) signal amplification and servo signal processing unit 20, a motor driving unit 30, A digital signal processor 60, an MPEG decoder 70, an audio signal processor 80, a video signal processor 90, a speaker 100, and a display 110.

The pickup and actuator unit 10 executes an optical pickup from a loading unit, that is, a disc loaded in a disc tray (not shown), and outputs an RE signal read out.

The motor driving unit 30 drives a spindle motor (not shown) to rotate the disc and drive the actuator unit 10, so that the pickup unit 10 executes the optical pickup to read the data recorded on the disc And output it as an RF signal.

The RE signal amplification and servo signal processing unit 20 amplifies the RF signal provided from the pickup and actuator unit 10 and provides a servo control signal according to the signal to the motor driving unit so that focus servo and tracking servo are performed.

The digital signal processing unit 60 processes the RF signal amplified and amplified RF signal provided from the servo signal processing unit 20, performs digital signal processing, performs error detection and error correction, and outputs the error signal to the MPEG decoder 70.

The MPEG decoder 70 decodes the error corrected digital video signal and the audio signal provided from the digital signal processing unit 60 based on the MPEG compression format and outputs the decoded digital video signal and audio signal to the video signal processing unit 90 and the audio signal processing unit 80 .

The audio signal processing unit 80 and the video signal processing unit 90 process the decoded audio and video signals provided from the MPEG decoder 70 and output them to the speaker 100 and the screen 110 respectively, And the screen 110 are respectively outputted as a voice and displayed as an image.

A process according to the present invention in a VCD player that executes playback in the above-described operation will be described with reference to FIG.

FIG. 2 is a detailed flowchart for performing a method of executing a multi-default selection function according to a preferred embodiment of the present invention.

In step S10, when a PBC (playback control) key signal is input through the key input unit 40, the PBC playback is executed under the control of the microcomputer 50. In step S20, the microcomputer 50 reads the input key The corresponding list of PSD .vcd according to the signal is read.

In step S30, referring to the list header data of the list read in step S20, it is determined whether the list is a selection list or a play list. At this time, If the value of the list header is $ 18, it is a select list, and $ 10 is a playlist. If it is a selection list in step S30, the process proceeds to step S40, and if it is a playlist, the process proceeds to step S120.

If it is discriminated as a playlist in step S30 and proceeds to step S120, the playlist is reproduced in step S120 and the process proceeds to step S100. If the selection list is determined to be a selection list in step S30 and proceeds to step S40, it is determined in step S40 whether the selection list is a multi-default selection list. For example, a default- It is determined that the multi-default selection list is a multi-default selection list. If it is determined that the multi-default selection list is " $ FFFE & Is displayed as a multi-default through the display unit 110, and the process proceeds to step S60. Otherwise, the process proceeds directly to step S60.

In step S60, the playitem number of the corresponding selection list is read, and in step S70, the corresponding playitem is reproduced and the process proceeds to step S80.

Thereafter, in step S80, it is determined whether a multi-deactivated key signal for multi-default function execution is input. If a multi-default key signal is input, the process proceeds to step S90, reads the vcd data, detects an entry corresponding to the current reproduction position, and reads a selection offset value corresponding to the detected entry.

In step S100, list information on the selected offset value corresponding to the detected entry in step S90 is read and PBC playback is started. In step S110, playback of the corresponding play item .

INDUSTRIAL APPLICABILITY As described above, the present invention has an effect of enabling PBC playback for a multi-default selection list to be performed smoothly during PBC playback.

Claims (1)

(A) reading a corresponding list of PSD .vcd when PBC (playback control) playback is executed; (B) reading the list header data of the list to determine whether the list is a selection list or a play list; (C) if the list identified in the step (b) is a selection list, it is determined whether the selection list is a multi default selection list, and if the selection list is a multi default selection list, Playing the play item; (D) When multi-default key signal for multi-default function execution is input, reads the vcd data, detects an entry corresponding to the current playback position, reads a selection offset value for each row in the detected entry, reads list information about the offset value, starts PBC playback, And playing the item on the video compact disc player.