KR980011317A - How to detect and display errors in video player - Google Patents

Abstract

A method for detecting and displaying an error in a video decoder, the method comprising the steps of: (a) detecting whether a video error occurs if the current mode is a playback mode; and counting a video error occurrence time if a video error occurs Storing and setting time information of a current playback track, a video error occurrence initial position, and a video error end position when the counted video error occurrence time is more than a predetermined time that can affect an image; (C) determining whether there is time information on an error occurrence point in the currently reproduced track; (d) if the time information on the error point is present in the currently reproduced track, And if it is reached, it is displayed that the error point has been reached, and after reaching the initial position of error occurrence Determining whether an error skip key signal for skipping and reproducing the error occurrence interval is input when the current reproduction position reaches the initial position of error occurrence, and if the error skip key signal is inputted, And performing playback in the current playback mode otherwise.

Therefore, according to the present invention, when an error such as to affect an image occurs during reproduction, time information of a track being reproduced, an initial position of error occurrence and an end position are stored, It has the effect of being able to recognize it and take measures.

Selectivity 2

Description

How to detect and display errors in video player

FIG. 1 is a schematic block diagram of a general video decoder for implementing the present invention; FIG.

FIG. 2 is a flow chart of a method of error detection and display in a video decoder according to a preferred embodiment of the present invention; FIG.

DESCRIPTION OF THE REFERENCE NUMERALS

10: pick-up and actuator 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: Screen

The present invention relates to an optical disk player, and more particularly to an optical disk player which detects a point where a video error occurs which can affect an image when a video compact disk is reproduced by a video decoder, And a method of detecting and displaying an error in a video decoder that allows a user to skip and reproduce an error point by displaying an error point in reproduction after that.

As a typical optical disc reproducing apparatus, a compact disc player (CDP), a laser disc player (LDP) and a compact disc graphic player (CDGP), a video compact disc player (VCDP a compact disc player, a compact disc player, and a video compact disc player are devices that can reproduce video and audio at the same time, to be.

Among these optical disc players, video codecs can reproduce not only video codecs but also general codecs, and the performance of the video codecs is improving for improving the performance thereof.

On the other hand, such optical disk reproducing apparatus reproduces video and / or audio recorded on an optical disk and outputs the reproduced video and / or audio through a screen and / or a speaker, and has a higher signal-to- It is possible to reproduce a signal with image quality and / or sound quality, to generate no noise due to irregular reproduction and modulation, to have very few distortion, to have no ghost, and to have random access, And it is in a trend of spreading widely.

On the other hand, when reproducing a video compact disc (hereinafter abbreviated as video CD) in such a video decoder, an error may occur which may affect an image displayed due to damage of the disc or the like.

However, in the case where an error is generated to such an extent as to affect an image as described above, there has been an inconvenience that a broken picture due to an error must be viewed every time a disc on which an error occurs is reproduced.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a method and apparatus for detecting a point where an error occurs for a predetermined time or more in reproducing video data in a video decoder, After storing the information, when the point at which the error occurred at the time of reproduction reaches the screen, it is displayed that the error occurrence position has been reached through the screen, so that the user can skip the position and reproduce the video. And to provide a display method.

According to a preferred embodiment of the present invention, there is provided a video decoder for detecting and displaying an error signal generated due to a damage of a disc or the like when performing playback in a video decoder, (A) detecting whether a video error occurs if the current mode is a playback mode, and counting a video error occurrence time if a video error occurs; and (b) Storing the time information of the initial position of the video error and the time information of the video error end position if the time is longer than a predetermined period of time so as to affect the current video track; Determining whether there is time information for a set error point; and (d) If there is time information on the error point in the track being played, it is determined whether the playback position has reached a position ahead of the error occurrence position by a predetermined time, and if it is reached, displaying that the error position has been reached and determining whether the error position has reached the initial position And if the current reproduction position reaches the initial position of error occurrence in step (d), it is determined whether an error skip key signal for skipping and reproducing the error occurrence period is inputted. If the error skip key signal is input, And performing reproduction in the current reproduction mode otherwise.

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

Figure 1 is a schematic block diagram of a typical video codere player for carrying out the present invention.

1, a conventional video decoder includes a pickup and actuator unit 10, an RF (radio frequency) signal amplification and servo signal processing unit 20, a motor driving unit 30, A key input unit 40, a microcomputer 50, a digital signal processing unit 60, an MPEG decoder 70, an audio signal processing unit 80, a video signal processing unit 90, a speaker 100, do.

The pickup and actuator unit 10 executes an optical pickup from a disk loaded in a disk tray (not shown) and outputs an RF signal read out therefrom.

The motor driving unit 30 drives a spindle motor (not shown) to rotate the disc and actuate the actuator unit 10 so that the pickup unit 10 executes the optical pickup to read the data recorded on the disc, Signal.

The RF signal amplification and servo signal processing section 20 amplifies the RF signal provided from the pick-up and actuator section 10 and provides a servo control signal according to the signal to the motor driving section 30 to perform focus servo and tracking servo Respectively.

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 temporarily stores the decoded digital video signal and the audio signal in the built-in memory (not shown) The signal processing unit 90 and the audio signal processing unit 80 and provides the data storage state of the RAM to the microcomputer 50 so that the microcomputer 50 can control the data processing speed according to the data storage state of the RAM.

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.

In the meantime, according to the present invention, when the reproduction of the video data is performed in the video decoder, the microcomputer 50 displays the stored state of the decoded and stored RAM provided by the MPEG decoder 70, that is, the storage rate If a signal indicating overflow and underflow of data is provided by checking the signal, it is recognized that an error has occurred and an error is generated according to the state of the error flag signal among the decoded and stored data .

When it is recognized that an error has occurred, the microcomputer 50 counts the time at which the error is continuously generated from the initial position of the error occurrence. At this time, an error occurs for a predetermined time, i.e., When the count is counted, the Q channel signal provided from the digital signal processor 60 is referred to, and the time information of the track currently being reproduced, the initial position where the error is generated, and the point at which the error occurs is stored in the internal memory.

The microcomputer 50 compares the time information of the error point with the time information of the current reproduction position when performing the reproduction after the above process is performed, A predetermined data and control signal for informing that an error occurrence point has been reached is provided to the video signal processing section 90 so that the video signal is processed in the video signal processing section 90 and displayed on the screen 110 .

Accordingly, the user can input a skip key (not shown) for jumping and reproducing the error point provided in the key input unit 40. When the skip key signal is inputted from the user, the microcomputer 10 By referring to the time information of the initial point of error occurrence and the time for the error occurrence end point and providing the corresponding control signal to the motor driving unit 30, the pickup 10 is jumped with respect to the error occurrence period, Playback can be omitted and playback can be performed.

2 is a flowchart of an error detection and display method in a video decoder according to a preferred embodiment of the present invention.

In step S10, it is determined whether the current mode of the video decoder is the playback mode. If the playback mode is the playback mode, the flow advances to step S12. Otherwise, the flow ends.

If it is determined in step S10 that the current mode is the playback mode, it is determined in step S12 whether a video error is detected. This is because the state of the error flag signal and the state of the error flag signal, as described above with reference to FIG. 1, And checking the data storage state of the built-in RAM.

If a video error is detected in step S12, a time at which a video error occurs is counted in step S14, and it is determined in step S16 whether a video error has occurred for a predetermined time or more that can affect the image. If it is determined in step S16 that a video error has occurred for a predetermined time or more that can affect the image, the process proceeds to step S18 where time information of the current track and the error occurrence initial position and error occurrence end position is stored The process proceeds to step S20, and if not, the process immediately proceeds to step S20.

If it is determined in step S20 that there is time information on an error occurrence position in the track currently being reproduced, it is determined in step S22 that there is time information on the error occurrence position in the track currently being reproduced. The flow is returned if it is determined that there is no time information on the error occurrence position in the currently reproduced track.

Thereafter, it is determined in step S20 that there is time information on the error occurrence position in the currently reproduced track, and the process proceeds to step S22. In step S22, the current reproduction position is set to a predetermined time, for example, If it is determined that the current reproduction position has reached the position 5 to 10 seconds earlier than the initial position of error occurrence, the process proceeds to step S24. In step S24, If the user recognizes the error occurrence period and does not want to reproduce the error occurrence period as described later, the user can skip the error occurrence area and reproduce the error occurrence area .

After step S24, it is determined in step S26 whether the current playback position has reached the initial position of error occurrence. If not, the flow returns. If the current playback position has not reached the error occurrence initial position, the flow returns to step S28.

If it is determined in step S28 that a skip key signal for skipping after an error area is input, if the skip key signal is inputted, skipping and skipping the error area in step S32 is performed, and playback is performed. ), The current reproduction mode is maintained and reproduced up to the error area, and when both steps S32 and S30 are completed, the flow is returned in both cases.

Therefore, according to the present invention, time information of a track being reproduced, an initial position and an end position of an error are stored when an error is caused to affect an image during reproduction, It has the effect of being able to recognize it and take measures.

While the present invention has been particularly shown and described with reference to certain preferred embodiments thereof, those skilled in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the invention as set forth in the following claims.

Claims (1)

A method for detecting and displaying an error in a video player, the method comprising the steps of: (a) if the current mode is the playback mode, Detecting whether an error has occurred, and counting a video error occurrence time if a video error occurs; (B) storing and setting time information of a current playback track, an initial video error occurrence position, and a video error end position when the counted video error occurrence time is longer than a predetermined time that can affect an image; (C) determining whether there is time information on an error occurrence point set in the step (b) on the currently reproduced track; (D) if the time information on the error point is present in the currently reproduced track in step (c), it is determined whether the reproduction position has reached a position ahead of the error occurrence position by a predetermined time, Determining whether the current playback position has reached the initial position of error occurrence; (E) If the current reproduction position reaches the initial position of error occurrence in step (d), it is determined whether an error occurrence key signal for skipping and reproducing the error occurrence period is inputted. If the error skip key signal is inputted, And performing reproduction in a current reproduction mode if reproduction of the current reproduction mode is not performed, and proceeding reproduction in the current reproduction mode otherwise. ※ Note: It is disclosed by the contents of the first application.