KR100711865B1 - Recording interruption information writing method for optical disc recording device - Google Patents

Abstract

The present invention provides a recording stop information recording method in an optical disc apparatus that can record information on a recording stop factor when recording is forcibly stopped due to an abnormal state of an input signal to be recorded upon recording on an optical disc. To this end, according to the present invention, when an abnormal state of a video signal to be recorded is detected in a state in which a specific program is recorded on an information recording medium, a step of forcibly stopping recording and a step of generating and recording information about a cause In this way, it is possible for the user to accurately grasp the cause of the forced stop of the recording, thereby providing convenience to the user.

Optical disc, recording, abnormal, recording stop, navigation information, message

Description

Technical Field [0001] The present invention relates to a recording stop information recording method in an optical disc apparatus,

1 is a block diagram of an optical disc apparatus to which a recording stop information recording method according to the present invention is applied,

FIG. 2 is a diagram showing program chain (PGC) information and text data information (TXTDTI) in navigation information defined in the DVD VR standard according to the present invention,

3 is a view showing table information of a data field for text data information (TXTDTI) shown in FIG. 2,

4 is a diagram showing table information of a data field for an item text search pointer shown in FIG. 2;

FIG. 5 is a diagram showing table information of a data field for Item Text shown in FIG. 2; FIG.

6 is a diagram illustrating a state in which a message about the cause of stopping the program recording is recorded in the item text information of the navigation information according to the present invention;

7 is a flowchart for explaining an operation of the recording stop information recording method in the optical disc apparatus according to the present invention.

Description of the Related Art

10: optical disk, 12: optical pickup,

14: reproducing and recording system, 16: signal detecting section,

18: key input unit, 20: memory,

22: microcomputer, 24: OSD generator.

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a recording stop information recording method in an optical disc apparatus, and more particularly, to a recording stop information recording method in an optical disc apparatus, And a stop information recording method.

2. Description of the Related Art In general, an optical disk device, for example, a DVD recorder capable of recording and reproducing high-quality video data and high-quality audio data on a disk for a long time has been developed and commercialized. In the DVD recorder, And encodes the audio and video signals input from the MPEG2 data into MPEG2 data in conformity with the DVD format.

Such an optical disc apparatus encodes a video and audio signal input from an external source such as an external digital television broadcast tuner or a camcorder in an MPEG-2 format conforming to a DVD format and outputs the encoded audio and video data to an optical disc (VTS) unit in a data area and navigation information for controlling the reproduction of the program or the video title set (VTS) Navigation Information) is created and recorded in the navigation information area.

On the other hand, in such an optical disk apparatus, copy protection is applied to a digital television broadcast program recorded on an optical disk or a video / audio signal from an external source, or a noise is intensively mixed into an input signal to be recorded, If the recording is not normally performed, unnecessary recording to the optical disk can be prevented by stopping the recording even if the recording function is already proceeding.

However, in such an optical disk apparatus, there is no way to notify the user of the information about the factor that forcibly stops the recording function when the input signal to be recorded is abnormally stopped to stop the recording function in the middle, The user can not grasp the forcible stopping factor of the recording, so that it is misunderstood as an error of the optical disk medium or a malfunction of the device.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a recording / Recording stop information recording method in an optical disc apparatus capable of recording stop recording information.

According to another aspect of the present invention, there is provided a method of recording video on a recording medium, the method comprising: stopping recording when an abnormal state of a video signal to be recorded is detected in a state in which a specific program is being recorded on the information recording medium; And generating and recording information about a cause of the recording stop information in the optical disc apparatus.

Hereinafter, the present invention configured as described above will be described in detail with reference to the accompanying drawings.

That is, FIG. 1 is a diagram illustrating a configuration of an optical disc apparatus to which the recording stop information recording method according to the present invention is applied.

1, the optical disc apparatus according to the present invention includes an optical pickup 12 for recording external input data on the optical disc 10 or reading data recorded on the optical disc 10, The external input data from the input source is encoded and modulated with a signal suitable for recording to generate and record navigation information for controlling the reproduction of the record data and to reproduce the record data read from the optical disc 10 A signal detecting unit 16 for detecting whether a recording target input signal inputted to the recording / reproducing system 14 is in a steady state or not, a recording / A key input unit 18 for recording input data or performing user key input for reproducing the recorded data, A memory 20 for storing various message information on the cause of interruption, a recording / reproducing operation of the recording / reproducing system 14 is controlled, and an abnormal state of the recording target input signal A microcomputer 22 for extracting the recording stop message information suitable for the cause of the abnormal state from the memory 20 and recording the recorded information on the optical disc 10 and stopping the recording, And an OSD generation unit 24 for generating graphics and characters for displaying textual information on a recording stop cause recorded on the display screen.

The signal detector 16 has a function of detecting copy protection information included in the input signal of the recording target and has a function of detecting a relative size of the noise signal mixed in the input signal, Noise ratio) of the input signal.

The signal detector 16 has a predetermined error code according to whether or not the copy inhibition information is detected or whether the SNR is large, and outputs an error code suitable for the abnormal state detected in the recording target input signal to the microcomputer 22).

When the microcomputer 22 receives the error code by detecting the abnormal state of the input signal from the signal detector 16, the microcomputer 22 grasps the factor of the abnormal state of the input signal by the error code, A recording stop message having a message content suitable for a cause of the abnormal state can be extracted from the memory 20 and recorded on the optical disc 10.

The microcomputer 22 switches the recording function to a pause function when an abnormal state of the input signal to be recorded is detected by the signal detector 16, In the navigation information of the optical disc 10, and when the message information of the recording stop cause is recorded, the recording function is completely stopped.

As shown in FIG. 2, when the data is firstly recorded on a disc inserted in the apparatus, the navigation information may be generated by generating or 'VMG Table' or 'RTR_VMG Table', which is navigation information defined in 'DVD Video' The additional information is recorded in the created table.

The PGCI includes cell information (CI), and the cell information (CI) is recorded in one program (that is, one PGI And the cell information search pointers CI_SRP are recorded and managed in correspondence with the respective cell information CI. However, when chapters are not automatically distinguished at the time of recording, one cell information corresponds to one recording program.

The TXTDT_MG includes TXTDTI (Text Data Information), IT_TXT_SRP (IT_TXT_SRP) referenced by IT_TXT_SRPN in the program information, and TXTDT_MG (Text Data Manager) for recording management of text information on the RTR_VMG Table. ) And IT_TXT specified by this IT_TXT_SRP are recorded and managed.

3, a CHRS (Character Set), a reserved area, IT_TXT_SRP_Ns (Number of IT_TXT_SRPs), and TXTDT_MG_EA (End Address of TXTDT_MG) are recorded and managed in the TXTDTI. The IT_TXT_SRP_Ns are recorded for various reasons When the text information for the recorded program is recorded, the number of item texts generated thereby is recorded.

4, IT_TXT_SA (Start Address of IT_TXT) and IT_TXT_SZ (Size of IT_TXT) are recorded and managed in the IT_TXT_SRP. The IT_TXT_SA includes an item text (IT_TXT ), And the IT_TXT_SZ records and manages the data size of the item text (IT_TXT).

As shown in FIG. 5, various text information can be recorded in the item text IT_TXT. In the present invention, message information indicating a cause of recording stop, i.e., an abnormal state of a recording target input signal, is recorded in a text form .

When an abnormal state is detected in the input signal to be recorded through the signal detecting unit 16, the microcomputer 22 determines whether the current recording is selected from the message information of the recording stop cause stored in the memory 20, as shown in FIG. Message information corresponding to the cause of discontinuation is extracted and section information on the section in which the recording is stopped on the optical disc 10 is attached and a message such as "This program is forbidden to record & Information can be recorded in the item text IT_TXT.

Next, Fig. 7 is a flowchart for explaining the operation of the recording stop information recording method in the optical disc apparatus according to the present invention.

Hereinafter, the operation of the present invention will be described in detail based on the apparatus of Fig. 1 with reference to the flowchart of Fig.

First, in the case of performing recording of a specific program on the optical disc 10 (step S10), the signal detector 16 detects an abnormal state, for example, recording prohibition or SNR too high (Step S11).

Then, the microcomputer 22 determines whether the input signal according to the recording target program is in an abnormal state through the detection operation of the signal detecting unit 16 (step S12). If it is determined that the input signal is not abnormal, (Step S13).

If it is determined that the input signal according to the recording target program is abnormal, the recording function is switched to the pause mode (step S14). If the input signal from the signal detection unit 16 is abnormal The error code corresponding to the abnormal state is detected according to the state detection, and the message information about the cause of the recording stop is extracted from the memory 20 (step A15).

As shown in FIG. 2 to FIG. 5, the microcomputer 22 may record interval information corresponding to the recording stop period in the message information about the extracted recording stop cause in the IT_TXT of the navigation information The text data size of the message and the start address of the text recording are recorded in the IT_TXT_SRP designating the IT_TXT in which the message is recorded, and the IT_TXT_SRP_Ns is incremented by "1" in the TXTDTI (step S16).

In addition, the index number IT_TXT_SRP indicating the currently recorded IT_TXT, i.e., the IT_TXT_SRPN on the IT_TXT_SRP, is recorded in the IT_TXT_SRPN field of the program information (PGI #i) allocated to the program currently being recorded.

Then, when the recording of the message information about the recording stop cause is completed, the pause mode is canceled and the recording function is completely stopped (step S17).

On the other hand, if the requested recording is normally terminated, "normal recording" identification information such as "-1 " is recorded in IT_TXT_SRPN of program information (PGI) for the recorded section.

Thereafter, when the recording section (one recording program) in which the recording of the optical disc 10 is stopped by the user's operation is reproduced, the microcomputer 22 reads the IT_TXT_SRPN of the PGI recorded in the navigation information of the optical disc 10 If the value is not "-1 ", for example, IT_TXT_SRP in the TXTDTI table in the order indicated by IT_TXT_SRPN is found, and the text recording information of IT_TXT at the position indicated by IT_TXT_SRP is extracted, So that the user can understand the cause of the stop of the recording. If IT_TXT_SRPN indicates normal recording, normal playback operation is performed with reference to the navigation information.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but on the contrary, It will be easily understood by those skilled in the art. It is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, it is intended to cover various modifications within the scope of the appended claims.

As described above, according to the present invention, when performing recording of a specific program on an optical disc, recording is forcibly performed due to an abnormal factor such as copy inhibition of a recording target program or degradation of recording quality due to excessive noise on a recording target input signal The user can record the message information about the abnormal recording stop factors on the optical disk and manage the recorded information on the optical disk so that the user can accurately grasp the cause of the forced recording stop, .

Claims (7)

A first step of temporarily stopping recording when an abnormal state of a video signal to be recorded is detected in a state of recording a specific program on an information recording medium; A second step of extracting message information corresponding to the abnormal state from message information about a cause of a plurality of recording stoppages that have been created in advance; And And recording the message information on the cause of the recording stop in the navigation information area of the information recording medium and ending the recording of the recording stop information in the optical disc apparatus. The method according to claim 1, Wherein the abnormal state of the program to be recorded in the first step is at least one of a copy protection state of a program and a low SNR of a video signal to be recorded, Way. The method according to claim 1, Wherein the first step is to switch the recording function to a pause mode when an abnormal state of the program to be recorded is detected. delete The method according to claim 1, And the message information of the second step is text information. 6. The method of claim 5, Wherein the message information includes section information on a section of the information recording medium whose recording is suspended. The method according to claim 6, Wherein the second step is to record the message information about the recording stop cause in the IT_TXT data field of navigation information in the information recording medium. Way.

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