KR19980030591A - How to Play Index of Video C.D Player - Google Patents

Abstract

The present invention relates to a method for playing an index of a video compact disc player, comprising the steps of: (a) determining whether a version of a disc being played is 2.0 when a playback key signal is input and playback is performed; Determining whether the playback control function is off if the disc being played is version 2.0; and if the playback control function is off in step (c) (b), the playback data is skipped by a predetermined area to play the desired data. Determining whether a skip key signal for searching is input; and when the skip key signal is input in step (d) (c), time data of the current playback position is read and stored, and entry of track 1 of the disc. After reading the time data of the index information recorded in the entry table, the search direction is set by comparing with the stored time data of the current playback position, Detecting the previous or next index position closest to the current playback position according to the temporal data of the swap information, and executing the index search according to the time data of the index to execute the playback when the detected index position is reached. In the case of a disc having long time data recorded on one track such as a movie, the contents can be quickly grasped, and the position where the desired data is recorded can be quickly found and reproduced.

Description

How to Play Index of Video C.D Player

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video compact disc player, and more particularly, to search for and reproduce desired data using index data recorded in an entry area of a version 2.0 disc of a video compact disc in performing playback in a video compact disc player. A method of playing an index of a video compact disc player.

Conventional optical disc playback devices include compact disk players (CDP), laser disk players (LDP), compact disk graphic players (CDGP), and video compact disk players (VCDP). : video compact disk player) is developed and used. In general, compact disk players are devices that can play audio only. Laser disk players, compact disk graphics players, and video compact disk players are devices that can play video and audio simultaneously. to be.

Recently, digital video disks (DVDs) using MPEG-2 moving picture compression chains have been developed, which are gigabytes (GBs) of capacity including moving pictures in an optical disc of 12 cm, such as a current CD. Data can be recorded and reproduced, and there is a continuing trend to improve its performance.

On the other hand, such optical disc reproducing apparatus reproduces the image and / or audio recorded on the optical disc and outputs it through the screen and / or the speaker, and has a higher signal-to-noise ratio than the conventional image and / or audio reproducing apparatus. It is possible to reproduce signals in image quality and / or sound quality, to generate noise due to irregular reproduction and modulation, to minimize distortion, to avoid ghosts, and to access randomly. There is a trend that is widespread.

On the other hand, there are two types of video compact discs used in video compact disc players (hereinafter referred to as Video CD Players) of the optical disc players, VCD 1.1 of version 1.1 and VCD 2.0 of version 2.0. Of these, VCD 2.0 is a user interactive disc. When the VCD 2.0 disc is played on a video CD player, a playback control (PBC) is used to perform step-by-step playback of desired functions and desired data through a menu screen. The data required to perform this function is recorded in the play sequence descriptor (PSD) area of the first track of VCD 2.0, and such data is stored in a Play List and a Selection List. It consists of.

As a result, when playing a disc of VCD 2.0, using the PBC function, you can quickly and accurately play the desired data among the data recorded on the disc through the menu screen.

In addition, index information is recorded in an entry table of track 1 among data recorded on a disc of a VCD 2.0. Such index information is a predetermined position, for example, when a long time data is recorded on one track such as a movie. For example, it is used for an index reproducing function that introduces the contents by reproducing for a predetermined time at a scene or a position to which the contents are switched.

However, when playing a VCD 2.0 disc on a video CD player, if the PBC function is turned off, you need to search or scan the recorded data when you select and play the desired screen, that is, the part where the desired data is recorded. It takes a lot of time, especially when there is a long track such as a movie, there was a very uncomfortable to find and play the desired data.

Accordingly, the present invention has been made to solve such a problem in the related art, and an object of the present invention is to display index information recorded in an entry area even when the PBC function is turned off when playing a VCD 2.0 disc in a video CD player. The present invention provides an index playback method of a video CD player capable of quickly reproducing desired data by quickly searching recorded data.

According to a preferred embodiment of the present invention for achieving this object, a playback control (PBC) function is provided for searching and playing data recorded with a desired screen during playback of a version 2.0 disc in a video compact disc player. A method of playing an index of a video compact disc player for quickly searching and playing desired data when the data is turned off, the method comprising the steps of: (a) determining whether a version of the disc being played is 2.0 when a playback key signal is input and playback is performed; (B) determining whether the PBC function is off if the version of the disc being played in step (a) is 2.0; and (c) if the PBC function is off in step (b), the playback position; By skipping and playing back a predetermined area to determine whether a skip key signal for searching for desired data is input. Step (d) When the skip key signal is input in the step (c), the time data of the current playback position is read and stored, and the time of the index information recorded in the entry area of the track 1 of the disc. After reading the data, the search direction is set by comparing with the stored time data of the current playback position, and according to the time data of the index information, the index position nearest to the current playback position is detected, and then the time of the index is detected. Performing an index search according to data to execute playback upon reaching the detected index position.

1 is a schematic block diagram of a general video CD player for practicing the present invention.

2 is a detailed flowchart of an index reproduction method of a video CD player according to a preferred embodiment of the present invention.

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

10: pickup and actuator unit 20: RF signal amplification and servo signal processing unit

30: motor drive unit 40: key input unit

50: microcomputer 60: digital signal processing part

70: MPEG decoder 80: Audio signal processing unit

90: video signal processing unit 100: speaker

110: Screen

Hereinafter, exemplary 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 CD player for practicing the present invention.

As shown in FIG. 1, the video CD player for carrying out the present invention includes a pickup and actuator unit 10, an RF (radio frequency) signal amplification and servo signal processing unit 20, a motor driver 30, and a key input unit. 40, the microcomputer 50, the digital signal processor 60, the MPEG decoder 70, the audio signal processor 80, the video signal processor 90, the speaker 100, and the screen 110.

The pickup and actuator unit 10 executes an optical pickup from a disc loaded in a disc tray (not shown) and outputs an RF signal which is read accordingly.

In addition, the motor driving unit 30 drives the spindle motor (not shown) to rotate the disk, and drives the actuator unit 10 so that the pickup unit 10 performs optical pickup to read the data recorded on the disk to RF Output as a signal.

The RF signal amplification and servo signal processing unit 20 amplifies an 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 the focus servo and the tracking servo can be performed.

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

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

The audio signal processor 80 and the video signal processor 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 displayed as an audio transmission and an image, respectively.

On the other hand, according to the present invention, if playback of a predetermined disc is executed by the above-described operation, the microcomputer 50 reads data recorded in track 1 of the disc being played to determine whether the version of the disc being played is 2.0 or 1.1. Detect.

If a skip key signal is input from the key input unit 40 while the version of the disc being played is 2.0 and the playback control (PBC) function is turned off, the microcomputer 50 is provided from the digital signal processor 60. With reference to the Q data, the time data of the current playback position is read out and stored in the internal memory.

Thereafter, the microcomputer 50 reads the index information recorded in the entry area of track 1, compares the time data of the index information with the time data of the current playback position stored in the memory, and indexes after the current playback position closest to the current playback position. After detecting the position (or the index position closest to or near the current reproduction position), the control signal is generated by the motor driver 30 to drive the motor driver 30 to move the pickup 10 closest to the current reproduction position. After moving to the index position after the current playback position and reaching the position, the microcomputer 50 generates a playback control signal again to perform the playback.

2 is a flowchart of an index reproduction method of a video CD player according to an exemplary embodiment of the present invention.

When the playback key signal is input in step S10 and playback is performed in step S20, it is determined in step S30 whether the version of the disc currently being played is 2.0, that is, the disc currently being played is a VCD 2.0 disc.

If the version of the disc being played in step S30 is 2.0, the flow advances to step S40, otherwise the flow ends.

In step S30, the process proceeds to step S40. In step S40, it is determined whether the playback control function of the video CD player is in an off state. If the playback control function is in an off state, the flow proceeds to step S50.

Then, in step S50, it is determined whether a skip key signal for skipping and playing by the adjustment area is input from the current playback position. When the skip key signal is input in step S50, the flow advances to step S60, in which step S60 reads and stores the time data of the current playback position, and in step S70, the current playback stored in step 60 is read and stored. The time data of the position and the time data of the index information recorded in the entry area are read and compared, and the index position (before or after the current reproduction position) close to the current reproduction position is detected.

In step S80, the index search is executed according to the time data of the index position detected in step S70. When the index search is completed, playback is resumed from the position in step S90.

As described above, the present invention provides a skip function, that is, a search function, with reference to index information recorded in an entry area when the playback control function is turned off when playing a disc of a version 2.0 in a video CD player. In this case, in the case of a disc in which long-time data is recorded on one track such as a movie, the contents can be quickly grasped, and the position where the desired data is recorded can be quickly found and reproduced.

Claims (1)

Video compact Video player for quickly searching and playing back the desired data when playback control (PBC) is turned off while searching and playing back the recorded data of the desired screen while playing a disc of version 2.0 on a disc player. In the index playback method of the disc player, (A) determining whether a version of the disc being played is 2.0 when a playback key signal is input and playback is performed; (B) determining whether the PBC function is off if the version of the disc being played in step (a) is 2.0; (C) if the PBC function is off in step (b), determining whether a skip key signal for searching for desired data is input by skipping and playing the playback position by a predetermined area; (D) If the skip key signal is input in step (c), the time data of the current playback position is read and stored, and the time data of index information recorded in the entry area of Track 1 of the disc is read. After that, the search direction is set in comparison with the stored time data of the current playback position, and according to the time data of the index information, the previous or subsequent index position is detected according to the time data of the index. Executing playback when the detected index position is reached by executing index search.