KR19980020368A - How to play disc - Google Patents

Abstract

The present invention automatically finds the last viewed position just before playback and starts playback.

According to the present invention, when a stop or power-off key is input while playing a disc, the microcomputer 10 stores the TOC and the last track position of the currently played disc in the memory 20. When the signal of the last play key is input in the stop state, the pickup unit 30 and the DSP unit 40 are controlled to determine the TOC of the disc currently mounted on the turntable, and the determined TOC and the stored TOC are the same. In this case, by tracking the last play position, which is the stored track position, and playing the disc, the user can simply find and continue watching the last position watched by the user.

Description

How to play disc

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc reproducing method for reproducing video discs, such as LD (Laser Disk) and VCD (Video Compact Disk), to find and play back the last position played just before.

In general, video discs such as LD and VCD are robust, and the recorded data is not easily damaged, and the recorded data has the advantage of being able to be reproduced cleanly using a laser, and its use is gradually increasing.

In the case of playing such a video disc, conventionally, only the playback is performed while performing constant speed playback, forward search, reverse search, etc. according to a user's key signal, and there is no function of finding and playing the last position played just before.

Therefore, when the user wants to play the video disc and watch the video, the user can operate the key one by one in the forward direction when the user wants to play the video from the last position viewed immediately after stopping or turning off the power. Search and reverse search to find the last played position, and when the last played position is found, you need to press the constant play key to play at a constant speed. As the search was repeated, there were various problems such as shortening the service life of the device.

It is therefore an object of the present invention to provide a disc playback method which automatically finds the last viewed position just before playback and starts playback.

Disc reproducing method of the present invention for achieving this object has a last play key, and when the stop or power off key is input while playing the disc, the TOC (Table Of Contents) and the last played It stores the track position, and when the signal of the last play key is input in the stop state, it judges whether the TOC and the stored TOC of the disc currently mounted on the turntable are the same, and tracks the last play position, which is the stored track position if it is the same. , Play the disc.

1 is a circuit diagram showing a reproducing apparatus to which the disc reproducing method of the present invention is applied.

2 is a signal flow diagram showing a disc reproducing method of the present invention.

Explanation of symbols on the main parts of the drawings

10: microcomputer

20: memory

30: pickup section

40 DSP part

Hereinafter, a disc reproducing method of the present invention will be described in detail with reference to the accompanying drawings.

1 is a circuit diagram showing a reproducing apparatus to which the disc reproducing method of the present invention is applied.

As shown therein, the microcomputer 10 controls the playback operation of the disc, and also stores the TOC and track positions of the last disc played just before, and controls to perform the playback operation from that position. A memory 20 for storing and outputting the TOC and track position of the last played disc under the control of 10, a pickup unit 30 for reproducing the disc under control of the microcomputer 10, and And a DSP (Digital Signal Processing) unit 40 for processing and outputting the reproduction signal of the pickup unit 30 under the control of the microcomputer 10.

In the disc reproducing method of the present invention applied to the reproducing apparatus having such a configuration, when the key signal according to the user's operation is input, as shown in FIG. It is determined whether a signal of a key or another key is input.

At this time, when a signal of a key other than the last play key, the stop key, or the power off key is input, the microcomputer 10 performs an operation according to the signal of the other key.

For example, when the power-on key is input, the power is turned on, and when the playback key is input, the pickup unit 30 and the DSP unit 40 are controlled to perform the disc reproducing operation, and the forward search and the reverse direction are performed. Performs the forward and reverse search operation of the disc when the search key is input

When the stop key is input in the state where the disc is played at a constant speed, the microcomputer 10 controls the pickup unit 30 and the DSP unit 40 to stop the disc playback operation. It checks and stores the last played position, that is, the track position of the disc.

In addition, when the power off key is input, the device plays the power off operation after confirming and storing the TOC and the last played position of the currently played disk.

The TOC and the last played position of the disc thus played are stored, and the microcomputer 10 is currently stopped when the device is turned on while the device is powered off or stopped, and the last playback key is input. In the stop state, the TOC and the last played position of the stored disc are determined.

In this state, the microcomputer 10 controls the pickup unit 30 and the DSP unit 40 to determine the TOC of the disc currently mounted on the turntable, and compares whether the determined TOC is the same as the stored TOC.

When the TOC of the disc currently mounted on the turntable and the stored TOC are the same, the microcomputer 10 keeps track of the last played position just before, and when the tracking is completed, the microcomputer 10 performs a playback operation to immediately play the disc. Play the disc from the last played position before.

As described above, the present invention stores the TOC and the last position of the disc played just before, and finds and plays the last played position according to the user's key operation. While watching, you can stop and play again from the location.

Claims (3)

A first step of determining the input of the key signal, a second step of stopping the play operation of the disc and storing the TOC and the last played position of the disc when the stop key is input in the first step; A third process of storing the TOC and the last played position of the disc when the power off key is input in step 1 and turning off the power; and the second process and the last play key when the last play key is input in the first step And a fourth process of searching for and playing the last play position of the disc with the TOC and the last played position of the disc stored in the third process. The method of claim 1, wherein the fourth process is performed when it is in a stopped state. The method of claim 1, wherein the fourth process determines the TOC of the disc mounted on the turntable, and finds and plays back the last play position when the determined TOC is the same as the stored TOC.