JP2000173126A - Mark setting method and optical disk device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily conduct a program searching for a music and a program searching of a desired position by automatically setting a mark for a program searching, recording the mark and the information indicating the position of the mark on a recording medium and reading the information. SOLUTION: If a silence interval continues for more than a prescribed time, it is discriminated that it is in an intermusic portion, a silence portion is no longer detected by a voice signal detecting section from voice input signals and when it is discriminated that no discrimination is made for a start of a music, it is made to determine whether it has passed more than the second prescribed time or not after the setting of a mark. If a prescribed time has passed, the recording position where it is discriminated that a new music is started, or the mark corresponding to the position is automatically set. Then, if the recording operation of the voice input signals is completed, the set mark and the information, which corresponds the recording positional information on the music that starts a recording at the position indicated by the marks, are automatically recorded in a user TOC region.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a mark setting method and an optical disk device. More specifically, it is assumed that a mark for cueing the audio signal and information indicating the position of the mark are recorded on the recording medium along with the audio signal. Then, when it is determined that it is not a silent portion, and when a predetermined time longer than the silent portion for discriminating between songs has elapsed since the setting of the mark, the setting is performed by using the mark. This is to make it easy to find the recorded audio signal.

[0002]

2. Description of the Related Art In a conventional optical disk device, for example, a mini disk device, not only a signal such as a music song is recorded on a mini disk, but also a mark (song number) for cueing the music song is set and the mini disc is recorded. Can be recorded on a disc. For this reason, when playing music or the like recorded on the mini-disc, the desired music or the like can be easily played by using the mark.

[0003] When a mark is set and recorded on a mini-disc, a method of automatically setting a mark by detecting a silent section longer than a predetermined time between music pieces, ie, a predetermined time, A method of automatically setting a mark every time is used.

[0004]

When a method of detecting a silent part longer than a predetermined time and automatically recording a mark is selected, for example, when a broadcast program is recorded, music or conversation is continuously performed. In this case, only the mark “1” is set at the recording start position as shown in FIG.
A mark may not be set in the middle of a broadcast program. In such a case, the broadcast program recorded by designating the position where cueing is required as shown in FIG. 5B is divided, and the mark “2” is added to the designated position as shown in FIG. 5C. Additional processing must be performed. Also,
When a plurality of cue positions are provided, it is necessary to perform a process of sequentially dividing a recorded broadcast program and adding a mark.

For example, when a music song is recorded when the method of automatically setting a mark every predetermined time has elapsed is selected, as shown in FIG. 6A, the recorded music songs PA and P are recorded.
Mark "1" every time the predetermined time Tk elapses, regardless of B or PC
“2” and “3” are set. In such a case, FIG.
As shown in B, the start position of the music piece PB is designated to perform division, and a mark “2” is added. Since the mark "2" is added, the marks "2" and "3" set in the middle of the music pieces PB and PC are automatically updated to the marks "3" and "4". After that, since the mark "3" is set in the middle of the music piece PB as shown in FIG. 6C, the process of deleting this mark "3" and combining the divided music piece PB as one music piece Must be done. Also, if the process of changing the mark “3” is not performed on the music song PC, the music song P using the mark is used.
B, PC cannot be searched.

As described above, unless the method of setting the mark is appropriately selected according to the recorded contents, it is not possible to easily locate the desired position using the mark. Also,
To change the mark so that the desired position can be found, the complicated operation is required as described above, and the mark cannot be easily changed.

In view of the above, the present invention provides a mark setting method and an optical disk device which can easily perform the cueing of a recorded audio signal.

[0008]

A mark setting method according to the present invention sets a mark for cueing when recording an audio signal on a recording medium, and stores information indicating the mark and the position of the mark on the recording medium. The mark is recorded when recording is started, when a silent part longer than the first predetermined time is detected, and then when it is determined that the mark is not a silent part, and when the mark is set, the mark is recorded. This is set when a second predetermined period longer than the first predetermined time has elapsed.

Also, the optical disk device has signal recording means for recording an audio signal on the optical disk, silence detecting means for detecting a silent part from the audio signal, and mark setting means for setting a mark. When recording of an audio signal on a recording medium is started by the signal recording unit, when a silent portion longer than the first predetermined time is detected by the silent detection unit, it is determined that the portion is not a silent portion, and when a mark is set. Is performed, a mark is set when a second predetermined time longer than the first predetermined time has elapsed, and position information indicating the position of the set mark is generated.
The signal recording means records the mark set by the mark setting means and the generated position information on the optical disc.

[0010] In the present invention, a music tune or the like is newly started from a cue mark of a music tune or the like recorded on a recording medium at the start of recording or after a silent portion that is determined to be between music pieces is detected. Automatically when the predetermined time longer than the time between the pieces of music has elapsed since the setting of the mark, and the mark and the position information indicating the position of the mark are recorded on the recording medium. .

[0011]

Next, the present invention will be described in detail with reference to the drawings. FIG. 1 shows the configuration of a mini disk. In FIG. 1, a clamping plate 10a for holding a disc is provided at the center of the mini-disc 10. A lead-in area 10b is formed on the innermost periphery of the laser beam irradiation surface side of the mini-disc 10, and TOC (Table of Contents) information such as disc information, track information, and recording information is recorded. In a recordable / reproducible disc, the lead-in area 10
A user TOC area 10c is formed on the outer peripheral side of b.
In the user TOC area 10c, additional information such as music tunes recorded in a program area 10d described later is recorded. For example, information indicating the recording position of each song and a cueing mark (song number) are recorded in the user TOC area 10c in a corresponding manner.

A program area 10d is formed on the outer peripheral side of the user TOC area 10c.
A signal such as a music tune is recorded in 0d. Note that a lead-out area 10e is formed on the outer peripheral side of the program area.

FIG. 2 shows a configuration of a mini-disc device. A mini-disc 10 is driven to rotate by a spindle motor 11, and a recording head 12 is arranged on one surface (upper surface in the figure) and on a lower surface. Optical pickup 13
Is arranged.

An analog audio input signal Sin supplied from the outside to the audio signal input terminal 15 is converted from an analog signal into, for example, 16-bit digital audio input data Din by an A / D converter 16 and becomes a first signal. Processing unit 1
7 is supplied. The audio input signal Sin is also supplied to the audio signal detection unit 27.

The first signal processor 17 converts the audio input data Din supplied from the A / D converter 16 into ATRAC (A
Perform band compression processing (encoding processing) using daptive transform Acoustic coding). The audio input data Din which has been subjected to the band compression processing is supplied as recording audio data WSD to the second signal processing unit 20 via the memory controller 18 provided for vibration proof. The memory controller 18 will be described later.

In the second signal processing unit 20, in order to convert the compressed recording audio data WSD from the first signal processing unit 17 into a signal suitable for recording on a disc, an EFM (Eight (Eight) signal is used). to Fourteen Modulation) modulation and CIRC (Cross Interleave Reed-Solomon Cod
The encoder for e) performs an encoding process for error correction. A signal obtained by performing the encoding process for the EFM modulation and the error correction process is supplied to the recording head 12 via the recording amplifier 21 as the recording data WD.

The recording head 12 generates a magnetic field based on the supplied recording data WD, and irradiates a laser beam of a predetermined power to the mini-disc 10 from the optical pickup 13 so that the recording data WD is applied to the mini-disc 10 magneto-optically. Be recorded.

In the optical pickup 13, the mini disk 1
When the laser light is applied to the RF amplifier unit 2, a read signal RS based on the reflected light from the mini-disc 10 is generated and
Feed to 2.

In the RF amplifier section 22, the optical pickup 1
3 on the basis of the read signal RS supplied from
Is generated and supplied to the second signal processing unit 20. Further, a focus error signal FE and a tracking error signal TE are generated based on the read signal RS and supplied to the servo controller 25.

The second signal processing section 20 performs error detection and correction and demodulation processing of the reproduction data RD supplied from the RF amplifier section 22. A signal obtained by performing the error detection and correction and the demodulation processing is supplied to the memory controller 18 for earthquake resistance as reproduced audio data RDB.

The memory controller 18 is for ensuring that the reproduced audio data RDB is output correctly without fluctuation in the time axis even when the disk vibrates during reproduction. Therefore, the memory controller 18 is provided with a memory unit 19 for temporarily storing the reproduced audio data RDB.

The reproduced audio data RDB, which has been subjected to the seismic processing by the memory controller 18 using the memory unit 19 and has a uniform time axis, is supplied to the first signal processing unit 17.

The first signal processing unit 17 performs a process of expanding the reproduced audio data RDB from the memory controller 18. The data signal obtained by performing this decompression processing is supplied to the D / A conversion unit 23 as audio output data Dout.

The D / A converter 23 converts the audio output data Dout supplied from the first signal processor 17 into an analog audio output signal Sout and supplies it to the audio signal output terminal 24.

In the servo control unit 25, the RF amplifier unit 22
Drive signal DRF and tracking drive signal DRT are generated based on the focus error signal FE and the tracking error signal TE supplied from the optical pickup 1
Supply 3 Based on the focus drive signal DRF and the tracking drive signal DRT, the position of the objective lens of the optical pickup 13 is adjusted and focus servo and tracking servo are performed. The servo control unit 25 generates a motor drive signal DRM for rotating the mini-disc 10 at a predetermined speed by the spindle motor 11. Further, a sled operation of moving the optical pickup 13 in the radial direction of the mini disc 10 is performed by the servo control unit 25. The servo controller 25 and the above-described memory controller 18 and the second signal processor 2
The operation of 0 is controlled by a control signal CTM from the system controller 30.

In the audio signal detecting section 27, the audio input signal S
A silent portion is detected based on the signal level of in, and a detection signal ADT indicating a detection result is generated. The generated detection signal ADT is supplied to the system controller 30.

An operation unit 31 and a display unit 32 are provided in a system controller 30 constituted by using a microcomputer or the like.
The system controller 30 includes an operation signal MT from the operation unit 31 and an audio signal detection unit 2.
7 generates a control signal CTM based on the detection signal ADT. Further, the TOC information of the lead-in area 10b and the information DTC of the user TOC area 10c read from the mini disk 10 are held in a memory (not shown) of the system controller 30 or the above-mentioned memory unit 19, and are read-in. The control signal CTM is also generated based on the information in the area 10b and the user TOC area 10c. Further, a display signal SDP for displaying the information of the lead-in area 10b and the user TOC area 10c and the operation state of the mini disk device on the display unit 32 is generated. Further, the system controller 30 also generates information DTM to be written in the user TOC area 10c of the mini disc 10.

Next, the mark setting operation in the system controller 30 will be described with reference to the flowchart of FIG. When the recording operation of the audio input signal Sin is started in step ST1, a mark corresponding to the recording start position of the audio input signal Sin is set, and the process proceeds to step ST2.

In step ST2, the audio signal detector 27
It is determined whether or not a silent portion has been detected from the voice input signal Sin. When a silent portion has been detected, the process proceeds to step ST3, and when a silent portion has not been detected, the process proceeds to step ST5.

In step ST3, it is determined whether or not the silent portion has continued for a first predetermined time Ta (for example, 2 seconds). And proceeds to step ST4, and if it has not continued for the predetermined time Ta or more, the process proceeds to step S4.
Proceed to T5.

In step ST4, it is determined whether or not the silent portion has been terminated and a new music piece or the like has been started. Here, when the audio signal detection unit 27 stops detecting a silent portion from the audio input signal Sin, it is determined that a new music tune or the like has been newly started, and the process proceeds to step ST6.
Proceed to T5.

When the process proceeds from step ST2, step ST3, and step ST4 to step ST5, the process proceeds to step ST5.
Then, the second predetermined time Tb after the mark is set
It is determined whether or not more than (for example, 5 minutes) has elapsed.
Here, when the predetermined time Tb or more has elapsed, the process proceeds to step ST6, and when the predetermined time Tb has not elapsed, the process returns to step ST2.

In step ST6, the mark corresponding to the recording position determined to start a new music or the like in step ST4 or the recording position determined to have passed the predetermined time Tb or more in step ST5 is automatically set. It is set and returns to step ST2.

After that, when the recording operation of the audio input signal Sin is completed, the information DTM which associates the set mark with the recording position information of a music piece or the like whose recording start position is the position indicated by this mark is generated. User TOC area 10c
Automatically recorded on

As described above, when the predetermined time Ta is set as the time for detecting the interval between music pieces, and the predetermined time Tb is set according to the playing time of each music piece recorded on the mini-disc, it is possible to set The mark can be recorded automatically at every predetermined time Tb even if a music tune having a long playing time or a broadcast program without a silent part is recorded.

For example, as shown in FIG. 4, sound signals of music pieces P1, P2, and P4 whose playing time is shorter than a predetermined time Tb and a sound signal of a music piece P3 that is longer than a predetermined time Tb are provided with silence portions for a predetermined time Ta. , The mark "1" for cueing is automatically set at the beginning of the music piece P1 recorded first. When the music piece P1 ends and a silent portion longer than a predetermined time Ta is detected, a mark “2” is automatically set at the head of the next music piece P2.

Next, the music piece P2 ends and a predetermined time Ta
When the silent section is detected, a mark "3" is automatically set at the beginning of the next music piece P3. Here, since the playing time of the music piece P3 is longer than the predetermined time Tb,
After a predetermined time Tb has elapsed since the mark "3" was set, the mark "4" is automatically set. In addition, mark "4"
After a predetermined time Tb elapses after the mark is set, the mark “5” is displayed.
Is set automatically. Thereafter, when the music piece P3 ends and a silent portion for a predetermined time Ta or longer is detected, a mark "6" is automatically set at the head of the next music piece P4.

When the recording of the music piece P4 is completed, the marks "1" to "6" correspond to the recording position information of the music piece whose recording start position is the position indicated by the marks "1" to "6". The information DTM thus made is automatically recorded in the user TOC area 10c. That is, the recording position information of the signal from the setting of the mark “1” and the mark “1” to immediately before the setting of the mark “2” is recorded correspondingly in the user TOC area 10c. Also, the recording position information of the signals from the setting of the mark “2” and the mark “2” to immediately before the setting of the mark “3” are recorded correspondingly. Mark “3” and mark “3”
Since the recording position information of the signal from the setting to the position immediately before the setting of the mark "4" is recorded correspondingly, the music piece P3 is recorded in a plurality of pieces.

As described above, according to the above-described embodiment,
By setting the predetermined time Ta as the time of a silent portion for detecting the interval between music pieces, a mark for cueing can be automatically set at the beginning of a music song or the like, and the mark setting interval can be set to a predetermined time. By specifying with Tb (the predetermined time Tb is longer than the predetermined time Ta), even if a silent portion longer than the predetermined time Ta is not detected, marks are provided at desired intervals in a music song, a broadcast program, or the like. Can be set automatically. For this reason, the automatically set mark can be used without selecting the method of detecting the interval between songs and setting the mark or the method of automatically setting the mark every predetermined time according to the recorded contents. This makes it easy to find the beginning of the song. In addition, since the contents of the music tune, the broadcast program and the like every time the predetermined time Tb elapses can be easily confirmed using the mark, it is possible to easily find the desired position.

In the above-described embodiment, the mini-disc device is used as the optical disc device. However, the recording position information of the mark and the signal can be recorded, and the reproduction is performed using the mark and the recording position information. It is needless to say that the optical disk device is not limited to the mini disk device as long as the optical disk device can perform the operation.

[0041]

According to the present invention, when a cue mark is recorded, a new music piece or the like is started at the start of recording or after a silence portion for more than a first predetermined time is detected, and the setting of the mark is performed. Is performed automatically when a second predetermined time has elapsed since the execution of the step S1, and information indicating the position of the cueing mark and the cueing mark is recorded on the recording medium. For this reason, by automatically reading out the cue mark and the information indicating the position of the cue mark automatically set from the recording medium, the cue mark of the music can be searched and the desired position can be determined using the cue mark. Cueing can be easily performed.

[Brief description of the drawings]

FIG. 1 is a plan view of a mini disc.

FIG. 2 is a diagram showing a configuration of a mini disk device.

FIG. 3 is a flowchart for explaining a mark setting method.

FIG. 4 is a diagram showing a setting state of a mark.

FIG. 5 is a diagram for explaining a method of adding a mark.

FIG. 6 is a diagram for explaining a method of replacing marks.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Mini disk 10c User TOC area 10d Program area 12 Recording head 13 Optical pickup 17 First signal processing part 18 Memory controller 19 Memory part 20 Second signal processing part 21 Recording amplifier 22 RF amplifier part 27 Audio signal detection part 30 System controller

Claims (2)

[Claims] 1. A cueing mark is set when an audio signal is recorded on a recording medium, and the mark and position information indicating the position of the mark are recorded on the recording medium. When recording is started, when a silent portion longer than the first predetermined time is detected, and then it is determined that the portion is not a silent portion, and when the mark is set, it is longer than the first predetermined time. A mark setting method which is set when a long second predetermined period has elapsed. A signal recording unit for recording an audio signal on an optical disk; a silence detection unit for detecting a silent portion from the audio signal; and a mark setting unit for setting a cue mark. In the means, when the recording of the audio signal on the recording medium is started by the signal recording means, the silence detecting means detects a silent part longer than a first predetermined time, and then determines that it is not a silent part. When
And setting the mark when a second predetermined time longer than the first predetermined time has elapsed since the setting of the mark, and generating position information indicating a position of the set mark, An optical disc device, wherein the signal recording means records the mark set by the mark setting means and the generated position information on the optical disc.