KR20030004822A - Apparatus and method for sync recording in disc recorder - Google Patents

Abstract

PURPOSE: A device and a method for recording synchronization in a disk recorder is provided to prevent irrelevant audio songs and non-sound sections from continuously regenerating in one track by recording the predetermined time of non-sound sections. CONSTITUTION: A method for recording synchronization in a disk recorder includes the steps of detecting non-sound sections between regenerated audio songs by detecting signal level of an analog audio signal currently being input in state of holding a recording operation if data recording is requested(S10-S12,S17-S18), recording the predetermined time of non-sound sections at a recordable optical disk in detecting the non-sound sections and recording the audio signal corresponding to the regenerated audio song after recording the non-sound sections by classifying as a new track(S15).

Description

Apparatus and method for sync recording in disc recorder}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synchronous recording apparatus and method in a disc recorder. More particularly, a silent section between analog audio songs or a track leading section of a digital audio song in which no subcode cue data exists. The present invention relates to a sync recording apparatus and a method for recording and recording a silent period of a predetermined time on a recordable optical disc such as a CD-R (CD Recordable) and then classifying and recording a new track.

First, FIG. 1 shows some components of a general disc recorder, in which an optical pickup 11 for recording or reproducing a signal on a recordable optical disc 10 such as a CD-R or the like. ); A recording signal processing unit 12 for signal processing and encoding digital audio data input from the outside or a digital audio signal converted by the A / D conversion unit 13 into a signal suitable for recording; And a controller 14 for controlling the recording signal processing operation according to a user request.

Accordingly, the user having the disc recorder configured as described above records the digital audio data read out and reproduced from the desired audio song, for example, an optical disc such as a CD-R, in the state in which the disc recorder is input. In the case of selecting and specifying the request key Rec_Key, the control unit 14 controls the recording signal processing unit 12 to process and encode digital audio data received from an external device into a signal suitable for recording. In the optical pickup 11, an audio data recording operation for receiving the CD-R or the like and recording the same on the recordable optical disc 10 is performed.

Also, a user provided with the disc recorder. In the case where the recording request key Rec_Key is selected and designated by the disc recorder while the analog audio song desired for example, for example, an analog audio signal read out and reproduced from the audio tape is inputted, the control unit 14 described above. As described above, the recording signal processing unit 12 is operated to perform signal processing and encoding of a digital audio signal input from the outside and converted by the A / D converter 13 into a signal suitable for recording. The pickup 11 performs the audio data recording operation which receives this and records it on the recordable optical disc 10 or the like with the CD-R.

Accordingly, the user can record and store digital audio data or analog audio signal corresponding to the desired audio tune on a recordable optical disc such as a CD-R or the like.

However, in the general disc recorder, as shown in Fig. 2, when the user selects and specifies the recording request key (Rec_Key), the digital audio data input and received at that time is immediately recorded on the recordable optical disc 10. In order to start (Rec_Start), one track to be separately recorded on the recordable optical disc 10, for example, the k-th track (Track #k), has received the m-th track (Track # m) received at the time of the recording request. Since a silent section existing between a portion of the audio data stream and the m + 1th track (Track # m + 1) is included and recorded in the kth track, a plurality of audio songs that are not related to each other during the playback operation are recorded. And silent sections have a problem in that they are continuously reproduced as one audio song.

In addition, as shown in FIG. 3, when the user selects and specifies the recording request key Rec_Key, the recordable optical disc 10 is subjected to A / D conversion and recording signal processing on the analog audio signal received at that time. Because recording starts immediately (Rec_Start) on one track, for example, a track recorded on the recordable optical disc 10, for example, the kth track (Track #k), an audio song received at the time of the recording request is received. Since a silent section existing between a portion of the audio track and the next audio song is recorded in the kth track, a plurality of audio songs and a silent section which are not related to each other during the playback operation are continuously reproduced as one audio song. there was.

Accordingly, the present invention was devised to solve the above problems, and includes a silent section between analog audio songs input to a disc recorder or a track of digital audio songs without subcode cue data. By detecting and confirming the head section, recording a silent period of a predetermined time on a recordable optical disc such as a CD-R (CD Recordable), and then recording the input audio into a new track so that audio recording in a song unit can be performed. It is an object of the present invention to provide a synchronous recording apparatus and method in a disc recorder.

FIG. 1 shows some components of a general disc recorder.

2 and 3 show digital audio and analog audio recorded by a general disc recorder,

4 shows a configuration of a synchronous recording apparatus in the disc recorder according to the present invention,

5 and 6 illustrate recording formats and audio data streams for Subcode-Q data applied to the present invention.

7 is a flowchart showing an operation of the synchronous recording method in the disc recorder according to the present invention;

8 and 9 show digital audio and analog audio recorded by the present invention.

※ Explanation of code for main part of drawing

10,20: optical disk 11,21: optical pickup

12,22: recording signal processor 13,23: A / D converter

14, 24: control unit 25: sub code queue detection unit

26: silent section detection unit 27: timer

28: D / A converter

In the synchronous recording method of the disc recorder according to the present invention for achieving the above object, when the data recording request, the recording operation is suspended, detecting the signal level of the analog audio signal currently input, Detecting a silent section of the first step; Recording a silent section of a predetermined time on a recordable optical disc when detecting a silent section between the reproduced audio music pieces; And recording the audio signal corresponding to the reproduced audio tune into new tracks after recording the silent section.

A synchronous recording apparatus in a disc recorder according to the present invention comprises: detecting means for detecting a signal level of an analog audio signal input from the outside and detecting a silent section between reproduction audio pieces; A control means for outputting a recording control signal corresponding to the silent section between the reproduced audio tunes in a state in which a recording operation is suspended upon request for data recording; And recording means for recording a silent section of a predetermined time on the recordable optical disc according to the recording control signal, and then classifying and recording the audio signal corresponding to the reproduced audio tune into a new track.

Hereinafter, a preferred embodiment of a synchronous recording apparatus and method in a disc recorder according to the present invention will be described in detail with reference to the accompanying drawings.

First, FIG. 4 shows a configuration of a synchronous recording apparatus in a disc recorder according to the present invention. In the synchronous recording apparatus, as described above with reference to FIG. 1, a recordable optical disc 20 such as a CD-R or the like is described. An optical pick-up 21 for recording or reproducing a signal at < RTI ID = 0.0 > A recording signal processor 22 for signal processing and encoding the digital audio data input from the outside or the digital audio signal converted by the A / D converter 13 into a signal suitable for recording; And a control unit 24 for controlling the recording signal processing operation according to a user's request and from the subcode-Q data received in the digital audio data. A subcode queue detector 25 for detecting whether the audio data corresponds to the track head; A D / A converter 28 for converting digital audio data in which the subcode cue data does not exist into an analog audio signal; A silent section detector 26 for detecting a signal level of the converted analog audio signal or an analog audio signal received from the outside to detect a silent section of the analog audio tune currently being input; And a timer 27 for counting the time required for the track head detection.

On the other hand, as shown in Fig. 5, the subcode queue detection unit 25 indicates track number (TNO: Track_Number) information recorded in the subcode queue data and the minute / time indicating the relative time information in the track. The controller 24 detects whether the second / frame (MIN / SEC / FRAME) information is searched and detects whether the currently input digital audio data corresponds to the head of a specific track, and detects a detection signal corresponding to the detection result. Will output

As shown in FIG. 6, the subcode cue data is interleaved with audio data recorded in a recording format of a pre-qualified audio CD (CD_Audio), for example, Pulse Code Modulation (PCM) audio data. ) The current track number and the relative time in the track from the track number (TNO) information and the minute / second / frame (MIN / SEC / FRAME) information recorded and recorded in the subcode cue data. It is possible to identify whether the digital audio data input and received corresponding to the head of a specific track.

On the other hand, in the case of digital audio data in which the subcode cue data does not exist, the D / A converter converts the analog audio signal into an analog audio signal and then inputs the silent section detector to the A / D converter. Is converted back into digital audio data.

Accordingly, when the user selects and inputs a recording request key Rec_Key in the state where the data recording mode of the disc recorder is set to the sync recording mode, the control unit 24 selects the subcode. Silent section recording of digital audio data or analog audio signal input from the outside based on the detection signal output from the cue detection section 25 or the silent section detection section 26 and the time counted by the timer 27. After that, a synchronous recording operation for classifying recording into a new track is performed. The synchronous recording operation described above will be described in detail as follows.

First, Fig. 7 shows an operation flowchart of the synchronous recording method in the disc recorder according to the present invention. The control section 24 sets the data recording mode in the disc recorder to the synchronous recording mode in response to a user's request. (S10) When the recording request key Rec_Key is received from the user in the state in which the synchronous recording mode is set (S11), the control unit 24 holds the data recording operation and at the present time It is checked whether the audio received from the input is a digital audio input or an analog audio input.

On the other hand, in the case of digital audio input (S12), when the digital audio data reproduced from an optical disc such as a CD-R is input from the outside as a result of the confirmation, the subcode cue detector 25 detects the digital audio. Read and confirm the track number (TNO) information and the minute / second / frame (MIN / SEC / FRAME) information included in the subcode queue data intermittently received in the data stream (S13), and the digital audio data stream currently being input. After detecting whether the track corresponds to the head of a specific track, a detection signal corresponding to the track is output, and the timer 27 counts the time required from the time point at which the data recording operation is suspended to the track start time. .

Thereafter, the control section 24 checks whether a detection signal output from the subcode queue detection section 25 is input and receives a detection signal indicating that the head of the specific track is received (S14). The operation control of the processing unit 22 is performed so that an audio recording operation is performed. In this case, the recording signal processing unit 22 generates and outputs null data for a predetermined time, and the optical disc 20 such as the CD-R or the like. After the silent section is recorded, new tracks are separately set and the digital audio data stream input from the outside is recorded (S15).

On the other hand, in the control unit 24, a time counted by the timer is normally required to complete a predetermined time, for example, reproduction of one audio song without receiving a detection signal indicative of the head of the specific track. In the case of exceeding about 4 minutes (S16), it is determined that digital audio data without subcode cue data for identifying the track head is input, and the operation of controlling the recording signal processing unit 22 is performed. The audio recording operation is performed, and as described above, the recording signal processing unit 22 generates and outputs null data for a predetermined time so that a silent section is applied to the optical disc 20 such as the CD-R. After the recording, the new track is separately set and the digital audio data stream input from the outside is recorded.

For reference, the recording signal processor 22 includes a buffer internal memory for temporarily storing audio data input in real time from the outside, and temporarily stores the audio data input while recording the silent section as described above. It is then read and signal processed and encoded into a signal suitable for recording.

As a result of the checking, when the audio currently received from the outside is an analog audio input (S17), for example, when the analog audio signal reproduced from the audio tape is input from the outside, the silent section detecting unit ( In operation 26, the signal level of the analog audio signal is detected (S18), and a silent section between audio tunes maintained at a zero level for a predetermined time is detected, and then a corresponding detection signal is output.

Thereafter, the controller 24 checks whether a detection signal output from the silent section detection unit 26 is input and receives a detection signal indicating that the analog audio track is a silent section (S19). The operation of the signal processing unit 22 is performed to perform an audio recording operation. In this case, the recording signal processing unit 22 generates and outputs null data for a predetermined time, thereby generating an optical disc 20 such as the CD-R. After the silent period is recorded, the new track is divided and set to perform a sync recording operation of recording an A / D converted signal from the outside (S15).

On the other hand, when the subcode cue data is not confirmed to be read in the state in which the digital data is input, that is, when digital audio without subcode cue data is input, the digital audio data is converted into an analog audio signal. As described above, the silent section detection unit 26 detects the signal level of the converted analog audio signal (S18), and maintains the audio track maintained near the zero level for a predetermined time. After detecting the silent section, a corresponding detection signal is output.

Thereafter, the controller 24 checks whether a detection signal output from the silent section detection unit 26 is input and receives a detection signal indicating that the analog audio track is a silent section (S19). The operation of the signal processing unit 22 is performed to perform an audio recording operation. In this case, the recording signal processing unit 22 generates and outputs null data for a predetermined time, thereby generating an optical disc 20 such as the CD-R. After the silent period is recorded, the new track is divided and set to perform a sync recording operation of recording an A / D converted signal from the outside (S15).

Therefore, in the disc recorder to which the synchronous recording apparatus and method according to the present invention are applied, as shown in FIG. 8, when the user selects and specifies the recording request key (Rec_Key) while the synchronous recording mode is set, at that time, In the state where digital audio data inputted to the digital audio data stream is held without being immediately recorded on the recordable optical disc 20, it is confirmed that the currently input digital audio data stream is the head of a specific track, or a subcode queue for identifying tracks. If it is determined that there is no data in the audio data stream, it converts to analog audio, checks the head of the song, starts recording operation (Rec_Start), and records a silent section on the recordable optical disc 20. After that, a new track is recorded separately, for example, a k th track (Track # k), and thus, the k th track (T). In rack #k), a synchronous recording operation is performed such that the m + 1th track (Track # m + 1) input after the recording request time point and a silent section of a predetermined time are recorded before the track, thereby performing a reproducing operation. It is possible to prevent a plurality of audio tunes and silent sections which are not related to each other from being continuously reproduced as one track.

In addition, as shown in FIG. 9, when the user selects and specifies the recording request key Rec_Key, the recordable optical disc 20 is subjected to A / D conversion and recording signal processing on the analog audio signal received at that time. If the silent section between the currently input analog audio songs is detected and confirmed in the state of holding the recording without immediately starting recording, the recording operation starts (Rec_Start), and the silent section is recorded on the recordable optical disc 20. After that, since a new track is recorded separately, for example, the k-th track (Track #k), the audio track that is input after the recording request time and the audio track are transferred to the k-th track (Track #k). A synchronous recording operation is performed such that a silent period of a predetermined time is recorded on the audio track, so that a plurality of audio songs and a silent section which are not related to each other during the reproduction operation are continuously reproduced as one track. It is possible to prevent.

As mentioned above, preferred embodiments of the present invention are disclosed for the purpose of illustration, and those skilled in the art can improve and change various other embodiments within the spirit and technical scope of the present invention disclosed in the appended claims below. , Replacement or addition would be possible.

The synchronous recording apparatus and method of the disc recorder according to the present invention as described above is a digital section in which there is no silent section or no subcode-Q data between analog audio tunes input to the disc recorder. By detecting and confirming a track leading section of an audio song, recording a silent period of a predetermined time on a recordable optical disc such as a CD-R (CD Recordable) or the like, and then recording the input audio into a new track. It is a very useful invention that a plurality of audio tunes and a silent section which are not related to each other at the time of performing a reproduction operation can be prevented from being continuously reproduced in one track by performing audio recording.

Claims (5)

A step (1) of detecting a signal level of an analog audio signal currently input by detecting a signal level of a currently inputted audio tune in a state in which a recording operation is suspended when a data recording request is made; Recording a silent section of a predetermined time on a recordable optical disc when detecting a silent section between the reproduced audio music pieces; And And recording the audio signal corresponding to the reproduced audio tune into new tracks after recording the silent section. The method of claim 1, In the second step, when the silent section between the reproduced audio pieces is detected, null data of a predetermined time is generated and output, and the silent section is recorded on a recordable optical disc. The method of claim 1, If the silent section is not detected for more than a predetermined time, determining that the audio has no track division, recording the silent section for a predetermined time on the recordable optical disc, and then separately recording the audio into a new track. A synchronous recording method in a disc recorder characterized by the above-mentioned. Detection means for detecting a signal level of an analog audio signal input from the outside and detecting a silent section between reproduction audio pieces; A control means for outputting a recording control signal corresponding to the silent section between the reproduced audio tunes in a state in which a recording operation is suspended upon request for data recording; And And a recording means for recording a silent section of a predetermined time on a recordable optical disc in accordance with the recording control signal, and then recording the audio signal corresponding to the reproduced audio tune into new tracks for recording. Synchronous recorder at. The method of claim 4, wherein And the recording means generates and outputs null data for a predetermined time in accordance with the recording control signal to record a silent section on a recordable optical disc.