KR19980058858A - How to Play Time Seek on a Video Compact Disc Player - Google Patents

Abstract

The present invention relates to a time seek play method for a version 2.0 disc of a video compact disc player. (A) A time seek play key signal is generated when a disc of version 2.0 is loaded into the video compact disc player to perform a predetermined function. Determining whether it is input; (B) requesting input of a time to be searched by displaying an on-screen display (OSD) screen for setting a time to be searched if a time search play key signal is input in step (a); (C) storing and setting a time for inputting a time search; (D) If the playback key signal is input after step (c), the video compact disc player determines whether it is in PBC (playback control) mode.If it is in PBC mode, turn off the PBC mode, search for the set seek time position, and play it when it reaches that position. And configured to execute the step.

Therefore, the present invention has an effect that time search playback can be smoothly performed even on a VCD 2.0 disc in performing time search playback in a video compact disc player.

Description

How to Play Time Seek on a Video Compact Disc Player

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video compact disc player, and more particularly, to a time searching and reproducing method of a video compact disc player that enables time searching and playback even on a version 2.0 disc of a video compact disc.

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 the PBC function is used to play a disc of a VCD 2.0, a desired screen of the data recorded on the disc can be quickly and accurately reproduced through the menu screen, and the VCD 2.0 disc is set to the PBC mode at the beginning of the reproduction.

On the other hand, the video compact disc player as described above has a time searching and reproducing function for convenience of use, which is to execute playback from the position when the user inputs time data of a desired position.

As described above, when playing a disc of VCD 1.1, time search play can be performed smoothly by inputting only the desired time data.However, when playing a disc of VCD 2.0, when time seek play is desired, the PBC function is turned off. There was a disadvantage to be implemented.

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 a video compact disc player capable of smoothly executing a time seek play function for a VCD 2.0 disc. The present invention provides a method for searching playback.

According to a preferred embodiment of the present invention for achieving this object, there is provided a time searching and reproducing method of a video compact disc player for smoothly executing a time searching and playing function for a version 2.0 disc in a video compact disc player. Determining whether a time search play key signal is input when the version 2.0 disc is loaded in the video compact disc player to execute a predetermined function; and (b) the time search play key signal is input in step (a). Requesting input of a time to search by displaying an on-screen display (OSD) screen for setting a time to search; (c) storing and setting the time when the time for searching for time is input; D) Play the video compact disc when the play key signal is input after step (c). If PBC (playback control) that the mode is determined by the PBC mode to search the search time position off the PBC mode is set and the arrival at that location and a step of executing reproduction.

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

2 is a detailed flowchart of a time searching 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.

On the other hand, according to the present invention, if the time search reproduction key signal is input from the key input unit 40 while the disc of the VCD 2.0 is mounted on the disc tray to perform a predetermined function, the microcomputer 50 will execute the video signal processing unit ( 90 to provide a control signal and pre-stored data, and accordingly, the video signal processor 90 processes the data provided from the microcomputer 50 on-screen display (OSD) and outputs it to the screen 110, and the screen 110 Displays characters that require input of time data for time search playback.

After that, when the search time is input from the key input unit 40, the microcomputer 50 stores and sets it. When the playback key signal is input again, the microcomputer 50 determines whether the currently set playback mode is the PBC mode, and automatically sets the PBC mode in the PBC mode. After turning off the mode to the normal regeneration mode, the motor and the motor drive unit 30 generate a control signal to transfer the pick-up unit 10 to the point according to the input time data, and then search and replay position according to the input time data. When is reached, playback starts from that position.

2 is a detailed flowchart of a time searching and reproducing method of a video compact disc according to a preferred embodiment of the present invention.

First, in step S10, it is determined whether the currently loaded disc is a VCD 2.0 disc. If it is a VCD 2.0 disc, the flow advances to step S20 to determine whether a time search play key signal is input.

When the time search play key signal is input in step S20, the process proceeds to step S30 to display a character requesting input of time data for time search play through the OSD screen.

Thereafter, when time data for time search reproduction is input in step S40, the data is stored and set, and the process proceeds to step S50.

When the process proceeds from step S40 to step S50, in step S50 it is determined whether a play key signal, that is, a play key signal for executing the time search play, is input. Proceed to).

Then, in step S60, it is determined whether the currently set playback mode is the PBC mode. If the currently set playback mode is the PBC mode, the process proceeds to step S70, where the PBC mode is automatically turned off to switch to the daily play mode. The process proceeds to step S80 and, if not in the PBC mode, proceeds directly to step S80.

When the process proceeds from step S60 and step S70 to step S80, in step S80, the pickup unit 10 is driven to search for a point according to the time data for the time search reproduction set in step S40. It starts.

Thereafter, in step S90, when the pickup section 10 reaches a point according to the time data for the time search reproduction set in step S40, the flow advances to step S100 to execute playback from that position.

As described above, the present invention has an effect that time search playback can be smoothly performed even for a disc of VCD 2.0 in performing time search playback in a video compact disc player.

Claims (1)

In the video compact disc player, a time seek playback method of a video compact disc player is provided to smoothly execute a time seek play function for a version 2.0 disc. (A) determining whether a time search play key signal is input when a disc of version 2.0 is loaded into the video compact disc player to execute a predetermined function; (B) requesting input of a time to be searched by displaying an on-screen display (OSD) screen for setting a time to be searched if a time search play key signal is input in step (a); (C) storing and setting a time for inputting the time search; (D) If a playback key signal is input after step (c), it is determined whether the video compact disc player is in PBC (playback control) mode. If it is in PBC mode, the PBC mode is turned off, and the search time position is searched to reach the position. And performing playback if necessary.