KR19980058856A - How to Play Entries on a Video Compact Disc Player - Google Patents

Abstract

The present invention relates to a method for playing an entry of a video compact disc player, comprising the steps of: (a) determining whether the version of the disc mounted in the video compact disc player is the entry playback mode in order to perform a predetermined function; (B) determining whether the entry playback mode is turned off in step (a); and (c) determining whether a playing time is set when the entry playback mode is turned off in step (b). If the reproduction time is not set, recording and storing the reproduction time information on the reproduced time and returning to step (a); (D) If the entry playback mode is not turned off in step (b), it is determined whether the entry has been playing before. If it was playing the entry previously, after reading the entry time information, it is determined whether the current entry area is within the previously played area. And (e) setting a next offset if the current entry area is within a previously played area in step (d), otherwise setting the entry play command to start playback. When the reproduction time is not set in executing entry reproduction, there is an effect that entry reproduction can be executed without an area to be reproduced repeatedly even if the next offset is an entry.

Description

How to Play Entries on a Video Compact Disc Player

The present invention relates to a playback method of a video compact disc player, in particular, when executing entry playback in a video compact disc player, when performing entry playback for the next offset value when the playing time is not set. The present invention relates to an entry playback method of a video compact disc player which can prevent the part which has been played back from being duplicated.

Typical 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. Generally, compact disk player is a device that can play audio only. Laser disk player, compact disk graphic player and video compact disk player can play video and audio at the same time. to be.

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

On the other hand, such optical disc reproducing apparatuses reproduce images and / or audio recorded on optical discs and output them through a screen and / or a speaker, and have a higher signal-to-noise ratio than conventional image and / or audio reproducing apparatus. It is possible to reproduce signals with 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 gradually play a desired function 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 VCD2.0, and such data is stored in the Play List and the Selection List. List).

As a result, when playing a disc of VCD 2.0, the PBC function can be used to 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 includes a predetermined position when a long time data is recorded on one track such as a movie. For example, it is used to introduce the contents by reproducing for a predetermined time at the scene of the movie or the position where the contents are switched.

On the other hand, when the above-described entry playback is performed, there may be a case in which the playing time is not set. In this case, playback continues until a predetermined key signal is input. When the offset) value is an entry, there is a problem that a region reproduced at the time of entry reproduction may be reproduced repeatedly.

That is, as shown in Fig. 2, when the entry playback is started from the beginning of the track (00:00) to play the predetermined time (30:00), the second entry is selected when the offset for the next entry is selected. Since playback is started from (10:00), there is a problem of overlapping playback by a predetermined area.

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 provide the following offset when the playback time is not set when the video CD player performs entry playback of a VCD 2.0 disc. In the case where the value is an entry, the present invention provides a method for reproducing an entry of a video compact disc player to prevent duplicate reproduction.

According to a preferred embodiment of the present invention for achieving this object, when performing entry playback for a disc of 2.0 in a video compact disc player, entry reproduction of a video compact disc player for executing entry reproduction by preventing duplicate playback A method comprising the steps of: (a) determining whether a version of a disc mounted in a video compact disc player to perform a predetermined function is an entry playback mode if VCD 2.0; and (b) an entry playback mode in step (a). And (c) determining whether a playing time is set when the entry playing mode is turned off in step (b). Returning to step (a) after recording and storing the reproduction time information of the time; (D) If the entry playback mode is not turned off in step (b), it is determined whether the entry has been playing before. If the entry playback was previously performed, the current entry area has been played before the entry time information is read. (E) setting the next offset if the current entry area is within the previously played area in step (d); otherwise, setting the entry play command to start playback. Steps.

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

2 is a diagram for explaining an entry reproducing method according to the present invention;

3 is a detailed flowchart of an entry reproduction method of a video compact disc player according to a preferred embodiment of the present invention;

<Description of the code | symbol about the principal part of drawing>

10: Pickup and Actuator

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 processor

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 processor 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 are 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 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 displayed as an audio and an image, respectively.

2 is a diagram for explaining an entry reproducing method according to a preferred embodiment of the present invention, and FIG. 3 is a detailed flowchart of an entry reproducing method for a video compact disc player according to a preferred embodiment of the present invention.

With reference to Figs. 1 and 2, an entry reproduction method of a video compact disc player according to the present invention shown in Fig. 3 will be described.

On the other hand, according to the present invention, if the version of the disc confirmed by reading data through the pickup and actuator unit 10 is a VCD 2.0 disc (S10), the microcomputer 50 determines whether the current mode is the entry playback mode and enters the entry. If it is not in the reproduction mode, the function and data for entry reproduction are cleared (S80). If the entry reproduction mode is executed, it is judged whether the entry reproduction mode is turned off while executing entry reproduction.

At this time, if the entry playback mode is off, it is determined whether there is a playing time set in the entry playback (S90), and if there is a set entry playback time, the flow returns immediately, and if not, the playback time information on the played time is recorded. (S100) That is, as shown in Fig. 2, if the playback time is not set from the first entry and the playback is made up to the third entry, the data for the playback time is stored and stored, and as described later, Even if the offset value is the second entry, playback starts from the stored time (30:00).

On the other hand, if the entry reproducing mode is not turned off, the microcomputer 5 determines whether the entry has been reproducing before (S40), reads entry time information if the reproducing was previously performed (S50), and enters if the entry has not been reproducing. The playback is started by setting the playback command (S110).

In addition, when reading of the entry time information is completed, the microcomputer S60 determines whether the current entry reproduction area is within the previously played area by comparing with the time information of the area that was previously reproduced (recorded and stored in S100) (S60). If it is not within the previously played area, the playback is started by setting an entry playback command (S110). If the previously played area is within the area, the next process is repeated after setting the next offset value.

As described above, according to the present invention, when the playback time is not set when performing entry playback on a version 2.0 disc in a video CD player, entry playback can be performed without an area to be reproduced even if the next offset is an entry. It has an effect.

Claims (1)

In the entry reproducing method of a video compact disc player for executing entry reproduction by preventing duplicate reproduction when performing entry reproduction for a 2.0 disc in a video compact disc player, (A) determining whether the version of the disc mounted in the video compact disc player to execute the predetermined function is in the entry playback mode if it is VCD 2.0; (B) determining whether the entry reproduction mode is turned off in the entry reproduction mode in step (a); (C) In step (b), if the entry play mode is turned off, it is determined whether a playing time is set. If the play time is not set, the play time information of the played time is recorded and stored. Returning to step a); (D) If the entry playback mode is not turned off in step (b), it is determined whether the entry has been played back before. If the entry playback was previously performed, the current entry area is read within the previously played area after reading the entry time information. Determining; (E) setting the next offset if the current entry area is within the previously played area in step (d); otherwise, setting the entry playback command to start playback. How to play an entry.