KR20070010241A - No audio information providing method for optical disc recording device - Google Patents

Abstract

A method for providing mute information in an optical disc device is provided to notify a state in which audio does not exist when a video file recorded as a mute is reproduced by recording a mute recording state of the video file together with information indicating whether mute recording is performed when the mute recording state of the video file recorded in an optical disc is detected. A microcomputer detects a mute state in which audio does not exist from input data recorded in an information recording medium(S10-S12). If the mute state of the input data is detected, the microcomputer records mute state information related to a video file in which the input data are recorded(S13-S15).

Description

How to provide silent information in an optical disc device {NO AUDIO INFORMATION PROVIDING METHOD FOR OPTICAL DISC RECORDING DEVICE}

1 is a view showing the configuration of an optical disk apparatus applied to the method for providing silence information according to the present invention;

2 is a view showing an example of generating a file name to indicate a silent state of audio on an information structure of a video file recorded on an optical disc according to an embodiment of the present invention;

FIG. 3 is a diagram illustrating an example in which silent information is displayed on a video screen on which a silent video file is presented according to the present invention; FIG.

4 is a flowchart illustrating an operation of a method of providing soundless information in an optical disk device according to an embodiment of the present invention;

FIG. 5 is a view showing navigation information defined in a DVD VR standard for explaining another embodiment of the present invention; FIG.

6 is a diagram illustrating an information field configuration of M_VOB_STI shown in FIG. 5;

FIG. 7 is a diagram illustrating an information data structure of A_ATR shown in FIG. 6.

<Description of Symbols for Main Parts of Drawings>

10: optical disc, 20: optical pickup,

30a: digital recording signal processing section, 30b: digital reproduction signal processing section,

40: channel bit encoder, 41: optical driver,

50: RF signal processing unit, 60: servo unit,

61: servo drive unit, 70: audio detector,

80: Microcomputer.

The present invention relates to a method for providing silent information in an optical disk device, and more particularly, to a method for providing silent information in an optical disk device for providing sound information so that a program file recorded on the optical disk can be found to be silent. It is about.

In general, an optical disc recording / reproducing apparatus, for example, a DVD recorder, capable of recording and reproducing high quality video data and high quality audio data for a long time, has been developed and commercialized. In the DVD recorder, Audio and video signals input from the outside are encoded in audio and video data, for example, MPEG-2 format, which conforms to the DVD format.

The encoded audio and video data is recorded in a data area of a disc in one program unit, and navigation information for controlling reproduction of the program is generated. In the data area of the disc, recording management is performed as a navigation file.

On the other hand, the DVD recorder can record audio and video signals normally input from the outside in the MPEG-2 format and record them on the optical disc. However, if the audio connection jack connected to the external audio / video source is lost, or When internal / external factors occur, such as when an audio signal of a signal format in which the codec is not supported is input in the DVD recorder, only video data can be recorded on the optical disc.

However, if the audio signal is not recorded on the optical disc and only the video data is recorded due to the internal / external factors of the DVD recorder as described above, even if the audio is not output in the state of playing the video data of the optical disc, Since a function for recognizing an unrecorded state of an audio signal is not included, there is a problem in that user's viewing discomfort is increased and there is a possibility of incorrect recognition of an error or malfunction of the device.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems. The object of the present invention is to detect whether a silent recording state of a video file recorded on an optical disc is detected, so that the silent recording can be recorded together, and the silent recorded video can be recorded. The present invention provides a method of providing silent information in an optical disc apparatus that can notify a state where audio is absent when a file is played back.

Another object of the present invention is to provide a method of providing silent information in an optical disc apparatus, when a silent recording state of a video file recorded on an optical disc is detected, a mark indicating a silent recorded file can be input to a corresponding video file name.

It is still another object of the present invention to provide a method of providing silent information in an optical disc apparatus that enables recording of silent recording information in navigation information of a video file when a silent recording state of a video file recorded on the optical disc is detected. .

According to the present invention for achieving the above object, the step of detecting a silent state without audio in the input data recorded on the information recording medium, and if the silent state of the input data is detected, the video file is recorded It provides a silent information providing method for an optical disk device, characterized in that the step of recording the silent state information for.

Hereinafter, an embodiment of 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 showing the configuration of an optical disk apparatus applied to the method for providing silence information according to the present invention.

As shown in Fig. 1, the optical disk apparatus according to the present invention is an optical disk 10 that irradiates a laser beam of a predetermined recording power to the optical disk 10 to record data or to read a signal recorded on the optical disk 10 from the reflected light of the laser light. The pickup 20, a digital recording signal processor 30a for adding an error correction code (ECC) to the input digital data, and converting the binary signal reproduced from the optical disc 10 into an original video / A digital reproduction signal processor 30b for restoring and outputting audio data, a channel bit encoder 40 for reconverting the data converted to the recordable format into a bit stream, and optically driving the light quantity driving signal according to the bit stream signal. The optical driver 41 outputs to the 20 and the signal from the optical disc 10 read out from the optical pickup 20 are filtered to output the binary signal. The focusing / tracking servo of the optical pickup 20 and the rotation of the optical disc 10 are performed by the RF signal processing unit 50, the focusing error signal FE and the tracking error signal TE from the optical pickup 20. In the data input to the servo unit 60 for controlling the drive, the servo driver 61 for controlling the rotation of the spindle motor 62 by the servo operation of the servo unit 60, and the digital recording signal processing unit 30a. If an audio signal is not detected by the audio detector 70 for detecting whether the audio data is normally input or not, by the detection operation of the audio detector 70 at the time of recording the optical disc 10 of the audio / video data input from the outside, the And a microcomputer 80 for controlling to insert a notation indicating whether to record silently in a file name of a video file recorded on the optical disc 10. FIG.

When the microcomputer 80 does not detect audio from the input data to be recorded when the audio detector 70 records audio / video data input from the outside to the optical disc 10, it is shown in FIG. As described above, a file name such as "CONAN_NS.VRO" is attached to a file name of a video file recorded at the end of recording of the input data, with a character indicating no audio such as "NS" (meaning No Sound). Create a.

When the microcomputer 80 plays back the video file recorded on the optical disc 10, if the video file is attached to a file indicating that there is no audio such as "NS", the video file is checked. Recognizing that the silent state, as shown in Figure 3, to display the information such as "No Sound Source" on the display screen, the video file is presented to the user that the source file recorded on the optical disc 10 is silent Let them know

Next, FIG. 4 is a flowchart for explaining the operation of the silent information providing method in the optical disk apparatus according to the embodiment of the present invention.

Hereinafter, a flowchart according to an embodiment of the present invention shown in FIG. 4 will be described in detail in parallel with the operation of the apparatus of FIG. 1.

First, in a state in which a program of a specific broadcast channel tuned from a tuner is recorded on the optical disc 10 (step S10), the audio detector 70 detects an audio signal from audio / video data input for recording and detects the result. Is output to the microcomputer 80 (step S11), and the microcomputer 80 determines whether the data of the broadcast program input for recording is silent without audio through the detection operation of the audio detector 70. (Step S12).

As a result of the determination, when it is determined that the broadcast program data recorded on the optical disc 10 is in a silent state without audio, the broadcast program data is recognized as being a silent program without audio (step S13).

In this state, it is determined whether the recording of the broadcast program is completed (step S14). If it is determined that the recording of the program is completed, a character indicating that there is no audio such as "NS" is inserted into the video file name of the recorded program. To record on the optical disc 10 (step S15).

However, when the microcomputer 80 determines that there is audio in the data input for recording on the optical disc 10, it is determined whether the recording of the broadcast program is completed (step S16), and the recording of the broadcast program is performed. If it is determined that the recording is completed, the recording is terminated (step S17).

In the waiting state after recording of the broadcast program on the optical disc 10 (step S18), the microcomputer 80 determines whether the user performs an operation for playing the video file recorded on the optical disc 10. If it is determined (step S19) that the user's operation for playing the video file is determined, the file name of the video file of the playback object is checked to indicate that there is no audio such as "NS" in the file name. It is determined whether a character is inserted (step S20).

As a result of the determination, if it is determined that a character indicating no audio is inserted in the file name of the video file to be reproduced, audio / video data can be decoded in a conventional manner so that audio / video can be output (step). S21).

However, if it is determined that the file name for the video file to be played includes a character indicating that there is no audio, a source such as "No Sound Source" is displayed on the display screen on which the video file is played, as shown in FIG. A display operation for notifying that the file itself does not have audio is performed (step S22).

Next, another embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 5 is a diagram illustrating navigation information defined in a DVD VR standard for explaining another embodiment of the present invention. FIG. 6 is a diagram illustrating an information field configuration of M_VOB_STI illustrated in FIG. 5. 7 is a diagram showing an information data structure of A_ATR shown in FIG.

According to another exemplary embodiment of the present invention, when audio / video data input from the outside to the optical disc 10 is recorded, if the audio of the input data is not detected from the audio detector 70, the data to be recorded is silent. It is determined to be that the code information indicating that the video file is in the silent state is recorded in the navigation information of the optical disc 10.

In FIG. 5, the optical disc 10 generates and records a 'VMG Table' or a 'RTR_VMG Table', which is navigation information defined in the 'DVD Video' standard, and when data is already recorded on the optical disc 10. The navigation information recorded on the disk is loaded into the memory in advance, and the navigation information is corrected / added in accordance with the newly recorded program and rewritten to the disk.

In the data structure of the navigation information, when the optical disc generates and records the "RTR_VMGI Table", which is the navigation information defined in the "DVD VR" standard, the "M_AVFITI" in the "M_AVFIT (Movie AV File Information Table)" of the "RTR_VMGI Table". (Movie AV File Information Table Information) "," M_VOB_STI # 1 to #n "for a plurality of programs (i.e., VOBs (Video Objects)) on which AV data is recorded, and a plurality of programs for recording AV data. File information "M_AVFI (Movie AV File Information)" is generated.

"M_VOB_STI # 1 to #n" for the plurality of programs have an information field structure as shown in Fig. 6, in which the information field structure has two bytes of "V_ATR" indicating a video attribute. , "AST_Ns" of one byte representing the number of audio streams, "SPST_Ns" of one byte representing the number of sub-picture streams, and audio attribute of the stream # 0. 3 bytes of "A_ATR0" representing Attribute for Stream # 0, 3 bytes of "A_ATR1" representing Audio Attribute for Stream # 1, 2 bytes of Reserved Area, Subpicture It consists of 48 bytes of "SP_PLT" representing the Sub-Picture Color Palette.

In the present invention, the video file is silent by using 3 bytes of "A_ATR0" representing the audio attribute for stream # 0 in the information field structure of the program (VOB) recorded and recorded in the silent state. Insert code information that specifies.

As shown in FIG. 7, in the information data representing the attribute information of the audio stream, a flag (NS Flag) indicating a silent state is inserted into a 3-bit reserved area. In the silent state without audio, a flag bit of "1" is inserted.

The microcomputer 80 searches for navigation information when the video file of the optical disc 10 is played and references the audio stream attribute information of "A_ATR0" in the information field structure of the program (VOB) according to the video file. In the preliminary region of the audio stream attribute information, if the silent flag (NS Flag) is "1", it is determined that the video file is in a silent state, as shown in FIG. 3. A message indicating a silent state such as "No Sound Source" is displayed on the reproduced display screen.

On the other hand, the present invention is not limited to the above-described typical preferred embodiments, but can be carried out in various ways without departing from the gist of the present invention, various modifications, alterations, substitutions or additions are common in the art Those who have knowledge will easily understand. If the implementation by such improvement, change, replacement or addition falls within the scope of the appended claims, the technical idea should also be regarded as belonging to the present invention.

According to the present invention as described above, when recording the predetermined audio / video data on the optical disk in the optical disk device, if it is detected that the recording target data is in a silent state, information indicating that the data recorded on the optical disk is silent state is recorded. In the state of playing the silent video file, a message indicating that the source file is in the original silent state can be displayed on the video playback screen based on the designation information of the silent state. It is possible to accurately notify the user that the video file is in the original silent state, thereby providing convenience to the user.

Claims (6)

Detecting a silent state without audio in the input data recorded on the information recording medium; And a second step of recording silent state information on a video file in which the input data is recorded when the silent state of the input data is detected. The method of claim 1, And said second step comprises attaching a character designating a silent state to a file name for a video file of an information recording medium on which said input data is recorded. The method of claim 2, In the second step, when the video file of the information recording medium is played back, recognizing that the video file is in a silent state by a character designating a silent state attached to a file name of the video file; And displaying a message indicating a silent state of a video source file on a display screen on which the video file is played. The method of claim 1, And said second step comprises recording silent state information of a corresponding video file in video object information (M_VOB_STI) of a recorded video file in navigation information of the information recording medium. The method of claim 4, wherein In the second step, the silence state information is a flag bit recorded in the reserved area constituting the attribute information (A_ATR) of the audio stream in the information field of the video object information (M_VOB_STI). Method of providing silent information in the device. The method of claim 5, In the second step, when reproducing the video file of the information recording medium, it recognizes that it is silent by dividing the flag bits of the spare area constituting the attribute information A_ATR of the audio stream from the video object information M_VOB_STI of the navigation information. To do that, And displaying a message indicating a silent state of a video source file on a display screen on which the video file is played.

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