JPH05114276A - Disc recording apparatus - Google Patents

Abstract

PURPOSE:To automate recording, to generate uniform soundless data and to realize continuous recording with good quality by starting and temporarily stopping recording on the basis of the recording level of the input audio data. CONSTITUTION:The analog audio data from a terminal 18 is, through an A/D converter 19, supplied to a muffler circuit 20 and a level detecting circuit 21, thereby driving a coil driver 24 and a coil 25 via a recording signal processing circuit 23. At the same time, the light is cast and the data is recorded in a magneto-optical disc 1. At this time, when a command to start recording is received by a controller 9, the data of the recording level in the level detecting circuit 21 is detected. For example, when the level is 60dB or higher, recording is started. Recording is temporarily stopped after continuous recording for a predetermined time when the level becomes 60dB or lower. Therefore, it is possible to automatically record data and stop recording and moreover to provide a uniform pause between pieces of music.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium capable of recording and reproducing audio information and the like, for example, a disc recording apparatus using a recordable compact disc.

[0002]

2. Description of the Related Art Conventionally, so-called compact discs (hereinafter referred to as CDs) in which continuous information such as music information is recorded as digital signals by fine pits that can be optically detected have been widely used. The CD is reproduced by an optical disk reproducing device (CD player) for reproduction only.

7 and 8 are schematic diagrams for explaining a signal format used in a CD. 40 shown in FIG.
Indicates one frame of the recording signal, a frame synchronization signal 40a indicating the beginning of the frame, a subcode 40b indicating additional information of the data, and a data field in which error detection and correction parity code is added to the main information of 24 bytes. It is composed of 40c.

The data field 40c is CIRC.
(Cross Interleaved Reed Solomon Code) is composed of an error detection and correction method that combines non-complete interleaved interleaving. In addition, as shown in detail in FIG. 8, the subcode 40b is one subcoding frame (hereinafter referred to as a sector) 50 with 98 frames, and has a track number (in the case where the main information is music information, And the absolute address information on the disc, etc. are shown.

The above sector length is 13.3 when converted into time.
Since it is [ms], it takes 1 second for 75 sectors, and the sector number is information of minutes: seconds: frames (frames are in base 75).
As a result, continuous time information and position information that sequentially increase from the innermost circumference of the disc are formed.

FIG. 6 is a schematic diagram showing an area arrangement on a disc in a CD. The disc 30 includes a main information recording area 30b containing main information such as music information and a sector number according to the subcode, and additional information relating to each main information recorded in the main information recording area 30b, for example, each track number and each. A sub-code indicates a recording start sector number of a track and information for identifying whether the track is audio information such as music or computer data by a subcode.
It is composed of an OC (Table Of Contents) area 30a.

Since the recording format is as described above, in the CD player, when the disc is loaded, the T
By reading the sub-code information of the OC area 30a, the number of each main information (in the case of music information, it corresponds to the number of songs)
Also, the sector number of the recording start position and the type of information (audio or data) are recognized, and the reproduction of a desired track in response to the subsequent reproduction instruction is performed in the information of the TOC area 30a and the main information recording area 30b. By collating with the sector number by the subcode, the access operation is promptly executed.

Since these CDs are recorded by a so-called CLV (Constant Linear Velocity) method at the time of recording, the recording density is constant at any position on the disc, and the recording capacity is improved. In an actual CD player, the CLV control is executed by controlling the rotation of the disc so that the interval between the reproduction signals of the CD recorded in the CLV in the above signal format, for example, the frame synchronization signal becomes the reference length.

On the other hand, when various kinds of information such as music information and computer information are recorded and used on a rewritable disc such as a magneto-optical disc which has been developed in recent years, a reproducing system with a conventional CD is used. It is desirable to provide a disc recording / reproducing device having commonality and compatibility.

In this case, in the initial disc in which no information is recorded, absolute address information using the subcode according to the signal format of the CD and CL
Since there is no frame synchronization signal or the like used for V control, the access operation to an arbitrary sector position prior to recording and the CLV control required during recording cannot be performed.

To solve this, Japanese Patent Laid-Open No. 64-3933
In JP-A-2, as a method of recording an absolute address equivalent to the absolute address information by the subcode, each bit is "1" or "0" after biphase mark modulation of the absolute address.
It has been proposed that the guide groove of the optical disk is biased inward or outward in the radial direction of the disk or the width of the guide groove is changed according to the situation.

In this case, if the frequency band of the absolute address by the bi-phase mark modulation and the frequency band of the recorded information by the EFM modulation are made different, it is possible to reproduce them separately from each other. An access operation can be performed even in an area where there is no by using the absolute address using the guide groove.

Also for the CLV control, by using the reproduced carrier component of the absolute address, accurate CL
V control is possible, and it can be similarly performed during recording.

In a recording device such as a disc recording / reproducing device using a recordable recording medium as described above, a CD or DAT (Digita) is used as an external audio source to be recorded.
l Audio Tape) and other hi-fi audio sources,
Conventional analog audio tapes, analog records, etc. (for convenience of explanation, the above audio source supply devices are collectively referred to as an audio reproduction device) can be selected in various ways, and satellite broadcasting started in recent years. Or conventional FM broadcasting (for convenience of explanation, the above audio source supply devices are collectively referred to as an audio reception device)
Is also available.

[0015]

When recording is performed using the above audio reproducing apparatus, an audio signal is supplied to the recording apparatus on the recording side from the audio reproducing apparatus which is an audio source for recording. At the time of actual recording, first, (procedure A1) while monitoring the beginning of the music to be recorded on the side of the audio reproducing device by ear, or by finding a means such as a cue, put it in a reproduction standby state, (Procedure A2) The recording start position in the recording medium on the recording device side is found to enter the recording standby state, and (Procedure A3) the reproduction standby state of the audio reproducing device is released. (Procedure A4) At the same time as the procedure A3, the recording standby state of the recording device is released. Then, at the stage where the recording of the desired song is finished, (procedure A5), while the user is listening to the song being recorded, the recording device is set to the recording standby state, and (procedure A5) A6) The audio playback device is stopped or put in a playback standby state. However, unlike a CD or the like that was recorded by using an audio editing device for business use, such an operation on the side of the user does not allow accurate operation according to the start of the song to be recorded. It is uncertain whether it is possible to always realize timing recording start and accurate timing recording end in accordance with the end of a song.

Specifically, if there is a deviation in the reproduction start position in the above-mentioned procedure A1 at the start of recording, the beginning of the music is partially omitted, or conversely, an unnecessarily long music is recorded. .. Similarly, even if the operation timing is deviated in step A4, the beginning of the piece of music may be missing and recorded.
Further, even when the recording ends, if there is an operation error in step A5, the end of the piece of music may be missing and recorded.

On the other hand, when recording is performed by using the audio receiving device, the audio signal from the audio receiving device, which is an audio source for recording, is supplied to the recording device on the recording side. (Procedure B1) First, the recording start position in the recording medium on the recording device side is found to be in the recording standby state, and (Procedure B2) the user monitors the reproduced sound of the audio reproducing device by ear, The recording standby state of the recording device is released when it is determined that broadcasting or reproduction of a desired song is about to start. As a result, recording is started, and (procedure B3) the recording device is put in a recording standby state while the user is listening to the music being recorded. Recording is usually ended by this.

However, as in the case of the audio reproducing apparatus described above, it is uncertain whether or not the user can always start and end the recording at the correct timing by such an operation, and the operation of the procedure B3 is performed. Not only the timing shift but also the operation timing of the procedure B2 is unpredictable, and it is more difficult to start accurate recording, and it is impossible to retry recording when the audio receiving device is used as an audio source. Therefore, it is extremely difficult to handle.

When the user himself / herself performs a recording operation using these audio sources to create an original recording medium, he / she can select a desired song from the various audio sources including selection from a plurality of recording media of the same type. In many cases, the user selects and creates the song, but the user is forced to perform the complicated and difficult operation as described above for each song.

Further, with the recording medium recorded by such a procedure, it is difficult to expect a good recording in which the silent time between songs as seen on a CD is uniform for the above reasons.

Further, in the pause operation from the recording operation in the recording apparatus using the above-mentioned disk, the light beam condensed on the track formed in the spiral from the inner circumference to the outer circumference of the disk is rotated once per rotation of the disk. It is usually realized by jumping in the inner circumferential direction of the disk at a rate of rotation (hereinafter referred to as "still jump"), and the timing of jumping is determined by a rotation detection device attached to a spindle motor that rotates the disk. This is done by obtaining a timing signal of 1 pulse per rotation, but in this case, the timing of the recording pause operation is fixed, so if you continue to record the next audio information after an arbitrary time, start recording. Depending on the timing of, the old recording information area for one revolution of the disc remains at maximum. There is a possibility that put away.

Taking the CLV control system of the CD player as an example, the disk rotation speed when the recording means tracks the inner circumference side is about 500 rpm, and therefore, 1 per rotation.
It corresponds to 20 ms. Further, since the disk rotation speed when the recording means tracks the outer peripheral side is about 200 rpm, it corresponds to 300 ms per one rotation.

When such a recording medium in which the old recording information remains and is recorded is continuously reproduced, the old recording information is reproduced for a short time in the portion where the recording is temporarily stopped. It is very uncomfortable for the listener to hear.

The present invention has been made in view of the above problems, and prevents recording mistakes due to a shift in operation timing at the time of recording, and avoids remaining of old recording information, resulting in good sound quality recording. It is an object of the present invention to provide a disk recording device that realizes the above and can record by inserting silence information for a certain time between each piece of music if desired.

[0025]

In order to achieve the above-mentioned object, a disk recording apparatus according to claim 1 of the present invention has a disk-shaped recording medium prerecorded with absolute address information necessary for recording and reproducing from the outside. An audio recording device for recording input audio information, comprising address detection means for detecting and recognizing the absolute address information previously recorded on a disc-shaped recording medium, and input audio information during recording standby or recording operation. Of the recording operation based on the absolute address information from the address detecting means, which is recognized when the boundary of the input audio information is detected by the boundary detecting means during the recording operation. The pause means for stopping and the break detecting means for detecting the next break of the input audio information in the recording pause state. When the issued, and configured to comprising the resume control unit recording operation from the absolute address paused the one.

In order to solve the above-mentioned problems, the disk recording apparatus according to the second aspect of the present invention inputs the absolute address information necessary for recording / reproducing from the outside into the disk-shaped recording medium in which the absolute address information is pre-recorded. An audio recording device for recording audio information, which includes address detection means for detecting and recognizing absolute address information pre-recorded on a disc-shaped recording medium, and detecting breaks in input audio information during recording standby or recording operation. Delimiter detecting means, a silent information recording means for recording silent information for a predetermined time by detecting a delimiter of the input audio information by the delimiter detecting means during the recording operation, and recognition at the time when the silent information recording is finished. Pause means for temporarily stopping the recording operation based on the absolute address information from the address detecting means, and the recording pause state Oite, when the next delimiter input audio information is detected by the delimiter detector means,
The control means for restarting the recording operation from the temporarily stopped absolute address is provided.

[0027]

In the disk recording apparatus according to the first aspect of the present invention, when a recording instruction is given, the amplitude of the input audio information is monitored together with the time axis, and the input audio information has a predetermined amplitude. Recording is started at the time when it is detected, and a recording pause operation is performed based on the absolute address information position corresponding to the time when it is detected that the input audio information has a predetermined amplitude or less and continues for a predetermined time. By being executed, it is possible to automate the start and the pause of the recording, and it is possible to continue the recording without leaving the old recording information area.

Further, in the disc recording apparatus according to the second aspect of the present invention, when a recording instruction is given, the amplitude of the input audio information is monitored together with the time axis, and the predetermined audio information is input. Recording is started when the amplitude is detected, and when it is detected that the input audio information is equal to or less than the predetermined amplitude for a predetermined time, the silence information is recorded for a predetermined time, and the silence information is recorded. The recording is paused based on the absolute address information position corresponding to the time when the recording was completed, thereby automating the start and pause of the recording and leaving the old recording information area untouched. It is possible to continuously record the audio information with a predetermined interval.

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the disc recording apparatus according to the present invention is applied to a disc recording / reproducing apparatus using a rewritable disc will be described below with reference to FIGS. is there.

As shown in FIG. 4, a magneto-optical disk 1 as a rewritable optical disk is provided with a TOC area 1a which is a management information area at an end portion on the inner peripheral side thereof and outside the TOC area 1a. Most of the area is the main information area 1b. Music information is recorded in the main information area 1b, while the main information area 1b is recorded in the TOC area 1a.
The management information relating to each main information recorded in, for example, the song number, the start absolute address position, the end absolute address position, etc. for each information are recorded. Since the signal format used here is the same as that used in the description of the conventional example shown in FIGS. 7 and 8, the description thereof will be omitted.

As shown in FIG. 5, in the TOC area 1a and the main information area 1b of the magneto-optical disk 1, spiral guide grooves (2, 2 ...) (Previously hatched for convenience) are provided.
Are formed at predetermined intervals in the radial direction of the disk.

The absolute address on the disc is "1" or "1" after the biphase mark modulation.
The guide grooves (2, 2 ...) Are biased to the inner side or the outer side in the radial direction of the magneto-optical disk 1 depending on whether it is 0 ". The above absolute address is the position on the disk. And the pre-recorded information as CLV rotation control information. Since the absolute address here corresponds to one sector in the CD format,
We will also call it a sector.

FIG. 1 shows a disk recording apparatus according to the present invention.
It is a block diagram which shows an Example at the time of applying to a disc recording / reproducing apparatus. The disc recording / reproducing apparatus according to the present embodiment comprises a spindle motor 3 for supporting and rotating the magneto-optical disc 1 and an optical head 4 for irradiating the magneto-optical disc 1 with a laser beam during reproduction to read recorded information. I have it.

The signal reproduced by the optical head 4 is amplified by the reproduction amplifier 5 and the binarized magneto-optical signal Pd is supplied to the reproduction signal processing circuit 10. Further, the prerecorded information Re is sent to the prerecorded information detection circuit 6. The prerecorded information detection circuit 6 is composed of, for example, a bandpass filter and a PLL, and a clock synchronized with the PLL is generated for the prerecorded information in the reproduction signal extracted by the bandpass filter.

Then, a clock synchronized with the above-mentioned prerecorded information, which is formed by bi-phase mark modulation of absolute address information, is supplied to the CLV control circuit 7. In the CLV control circuit 7, the synchronous clock from the prerecorded information detection circuit 6 and
Accurate CL by comparing with the internal reference frequency and controlling the spindle motor 3 with the difference signal.
V control is implemented.

Further, the prerecorded information in the reproduction signal extracted by the prerecorded information detection circuit 6 is supplied to the address decoder 8. The address decoder 8 is composed of a bi-phase mark demodulation circuit and an address decoder. After the pre-recorded information extracted by the pre-recorded information detection circuit 6 is subjected to bi-phase mark demodulation, the address decoder performs position information on the disc, that is, The absolute address value which is a sector is decoded and supplied to the controller 9.

The reproduction signal processing circuit 10 separates the frame sync signal from the binarized magneto-optical signal Pd in the reproduction signal supplied from the reproduction amplifier 5 and performs EFM demodulation to separate the subcode information and the subcode decoder 13. And the error correction operation by CIRC using the parity of the reproduced data is performed. The reproduction data error-corrected by the reproduction signal processing circuit 10 is converted into an analog audio signal by the D / A converter 11 and output to the terminal 12.

The subcode decoder 13 decodes the subcode information in the reproduction signal supplied from the reproduction signal processing circuit 10 and sends it to the controller 9. On the other hand, the analog audio information input from the terminal 18 is converted into digital audio information by an A / D (analog / digital) converter 19, and then supplied to the muffling circuit 20 and the level detection circuit 21.

The level detecting circuit 21 sets the recording level information Ld that holds the maximum value of the digital audio information sequentially supplied from the A / D converter 19,
The holding value is reset every time it is given to the controller 9 and the recording level information Ld is read by the controller 9.

Further, the muffling circuit 20 normally passes the digital audio information from the A / D converter 19 and supplies it to the recording signal processing circuit 23. When there is a mute instruction from the controller 9, the above-mentioned information is sent. It is supplied to the recording signal processing circuit 23 as silent data, that is, as digital zero.

In the recording signal processing circuit 23, the muffling circuit 20
The error detection / correction parity is generated and added to the digital audio information from the A / D converter 19 or the silent data input via the sub-code information from the sub-code encoder 22, and after EFM modulation, A coil driver 24 with a frame synchronization signal added
To be supplied to.

The coil driver 24 drives the coil 25 based on the supplied signal, and at the same time, the optical head 4 is driven.
The signal is recorded by irradiating the magneto-optical disc 1 with the recording laser beam. The signal format here is the same as that of the CD used in FIG. 7 and FIG.

The controller 9 is adapted to receive a user's instruction such as recording and reproduction through the operation keys 16.
In addition, the address for recognizing the position of the optical head 4 on the disk by receiving the absolute address information from the address decoder 8, that is, the sector value, and moving the optical head to a desired position by using an optical head moving mechanism (not shown) It has a function.

Further, the subcode information given from the subcode decoder 13 is recognized, and if the recognized subcode is the contents of the TOC area, it is stored in the TOC memory 14 as management information, and if necessary, the information is stored. TOC
It is configured to read the management information from the memory 14. And when recording new main information,
The management information in the TOC memory 14 is updated.

When recording the management information, the contents of the TOC memory 14 are read out and supplied as management information to the sub-code encoder 13 to perform the recording through the above recording procedure. Further, after resetting the timer 15, it is configured to instruct the start of counting and to sequentially monitor the counting state of the timer 15, and the digital audio signal input by using the detection signal Ld from the level detection circuit 21. Information division is determined, and control described in detail below is performed.

The display 17 is so constructed that, in addition to the operating state of the disc recording / reproducing apparatus, the position of the optical head 4 based on the absolute address information, that is, the recording or reproducing position, etc., is sequentially displayed as required. ing.

FIG. 2 is a flow chart showing an embodiment of a recording operation when the disc recording apparatus according to claim 1 of the present invention is applied to the disc recording / reproducing apparatus of FIG. An operation example mainly of processing control will be described.

When the controller 9 receives a recording start instruction from the operation keys 16 in S200, it inputs the recording level information Ld from the level detection circuit 21 in S201 before starting actual recording, and in S202. It is determined whether the level is equal to or higher than a predetermined level.

When Ld does not reach the predetermined level, S
The operation returns to 201 and the above operation is repeated. The predetermined level here is set to, for example, -60 [dB] or more with respect to the maximum allowable input level of the A / D converter 19, so that a musical piece of a musical sound, which is the input audio information, starts. If not, it is in the recording standby state.

When a musical sound, which is the input audio information, starts, in S201, it is determined in S202 that the recording level information Ld input from the level detection circuit 21 reaches the predetermined level, and in S203. The actual recording operation starts.

Next, in steps S204 to S207, it is determined whether the music piece such as a musical tone, which is the audio information being recorded, is ended. That is, the controller 9 sets the timer 1 in S204.
After the reset operation which is the initialization of 5, the start of counting is instructed, the audio information level during recording is input as the recording level information Ld from the level detection circuit 21 in S205, and the predetermined level is input in S206. It is determined whether or not

If it exceeds the predetermined level, the process returns to S204 and the above operation is repeated. The predetermined level here is set to, for example, -60 [dB] or more with respect to the maximum allowable input level of the A / D converter 19, so that the musical composition of the musical tone, which is the input audio information, ends. If not, recording continues.

On the other hand, in S206, the recording level information Ld
If is less than or equal to the predetermined level, S207 is reached, and it is determined whether or not the count value of the timer 15 has reached the predetermined value. If the predetermined value is not reached, the process returns to S205 and the above operation is repeated, but the predetermined value of the timer count determined in S207 is, for example, 1 second,
Therefore, when the recording level of -60 [dB] or less continues for 1 second or more due to the end of the musical tone sound or the like which is the input audio information, S208 is reached and the recording operation is temporarily stopped. , S209: Operation key 1
It will be in a standby state waiting for an instruction by 6 or the like.

Here, the recording operation is temporarily stopped in S208 after the absolute address information from the address decoder 8 detected immediately after the count result of the timer 15 is determined to reach a predetermined value in S207. , Optical head 4
It is executed by returning the recording laser light from the device to the reproducing laser light (returning the recording light output to the reproducing light output) and performing a still jump, and thereafter performing a still jump for each recognition of the absolute address information. ..

As a result, the light beam during the pause of the recording operation (during the standby operation) always traces the rearmost part of the music area recorded immediately before the pause of the recording operation. After that, when the instruction to continue recording is issued, the process returns to S200 and the above-described operation is repeated, so that even in continuous recording accompanied by a pause, good recording without leaving past recording information can be realized.

In the continuous recording after the recording is temporarily stopped as described above, the rearmost portion of the music recorded immediately before the pause operation is lost by being overwritten by one rotation of the disk at the maximum. In the case of this embodiment, the time required for one rotation of the disk is about 0.3 seconds at the maximum, whereas
The last part is -60 in the above example as the end recognition of the music.
Since the level below [dB] is the rear part of the area where one second continues, important audio information is not erased.

As described above, the recording operation is automatically started and ended by the recording level information judgment in response to the recording start instruction from the user.

FIG. 3 is a flow chart showing an embodiment of the recording operation when the disk recording apparatus according to claim 2 of the present invention is applied to the disk recording / reproducing apparatus of FIG. An operation example mainly of processing control will be described.

When the controller 9 receives a recording start instruction from the operation keys 16 in S300, it inputs the recording level information Ld from the level detection circuit 21 in S301 before starting actual recording, and in S302. It is determined whether the level is equal to or higher than a predetermined level.

If the predetermined level is not reached, S301
It returns to and the above operation is repeated. The predetermined level here is, for example, −60 [dB] or more with respect to the maximum allowable input level of the A / D converter 19,
Therefore, when a music piece or the like which is the input audio information has not started, the recording standby state is set.

When a musical tone, which is the input audio information, starts, the recording level information Ld input from the level detection circuit 21 is input in S301, and S302.
After it is determined that Ld has reached the predetermined level in step S303, the actual recording operation is started in step S303.

Next, in S304 to S307, it is determined whether or not the music piece such as a musical tone, which is the audio information being recorded, is ended. That is, the controller 9 sets the timer 15 in S304.
After the reset operation which is the initialization of the, the start of counting is instructed, the audio information level during recording is input as the recording level information Ld from the level detection circuit 21 in S305, and the predetermined level is input in S306. It is determined whether or not

If the level exceeds the predetermined level, the process returns to S304 and the above operation is repeated. The predetermined level here is set to, for example, -60 [dB] or more with respect to the maximum allowable input level of the A / D converter 19, so that the musical composition of the musical tone, which is the input audio information, ends. If not, recording continues.

On the other hand, in S306, the recording level information Ld
Is less than or equal to the predetermined level, the process reaches S307, and it is determined whether or not the count value of the timer 15 has reached the predetermined value. If the predetermined value has not been reached, the process returns to S305 and the above operation is repeated, but the predetermined value of the timer count determined in S307 is, for example, 1 second,
Therefore, when the recording level of -60 [dB] or less continues for 1 second or more due to the end of the musical tone sound or the like which is the input audio information, the process reaches S308 and the timer 1
After resetting 5, counting start is instructed again, and S
By giving a muffling instruction to the muffling circuit 20 at 309, the recorded information input to the recording signal processing circuit 23 becomes muffling data of digital zero, and recording of silent information is started.

Next, in S310, it is determined whether or not the count value of the timer 15 has reached a predetermined value, and after reaching the predetermined value,
In S311, the recording operation is temporarily stopped, and S3 is executed.
At 12, a standby state waiting for an instruction from the operation keys 16 or the like is set.

Note that the predetermined value of the timer count value in S310 is, for example, 3 seconds, and the timer count value is S305 to S307.
After the one-second song that was judged by
After the silent information corresponding to the inter-track tune for a second is recorded, the pause state is entered.

Here, the temporary stop of the recording operation in S311 is similar to the temporary stop of the recording operation in S208 of FIG. 1, and immediately after it is determined in S311 that the count result of the timer 15 has reached the predetermined value. After recognizing the detected absolute address information from the address decoder 8, the recording laser beam from the optical head 4 is returned to the reproducing laser beam (the recording optical output is returned to the reproducing optical output), and a still jump is performed. After that, it is executed by performing a still jump every time the absolute address information is recognized.

As a result, the light beam during the pause of the recording operation (during the standby operation) always traces the last part of the music area where the recording is performed immediately before the pause of the recording operation. After that, when an instruction to continue recording is issued, the process returns to S300 and the above operation is repeated, so that good recording is performed without leaving past recording information even in continuous recording accompanied by a pause.

In the continuous recording after the recording is temporarily stopped as described above, the rearmost portion of the music recorded immediately before the pause operation is lost by being overwritten by one rotation of the disk at the maximum. In the case of this embodiment, the time required for one rotation of the disk is about 0.3 seconds at the maximum, whereas
The last part is -60 in the above example as the end recognition of the music.
4 including the area where the level below [dB] is continuous for 1 second
Since it is the rear part of the silent information area corresponding to the inter-track tune for a second, important audio information is not erased.

As described above, in response to the user's recording start instruction, the recording operation is automatically started and ended by the judgment of the recording level information, and at the end of the recording, the silent information corresponding to a predetermined time is recorded. To be done.

In the above embodiment, the muffling circuit 20
Although the example has been described as being performed at the digital signal stage after the A / D converter 19, it may be performed at the analog signal stage before the A / D converter 19.

As an example of the judgment value of the level detection circuit, -6
The description has been made using the example of 0 [dB] and 1 second as the music end determination time, but the present invention is not limited to this.

Further, in the present embodiment, an example using a rewritable magneto-optical disc has been described, but the present invention is not limited to this, and other rewritable discs and write-once discs that can be recorded only once can be used. It goes without saying that is also applicable.

[0074]

As described above, the disk recording apparatus according to claim 1 of the present invention is a recording apparatus for recording audio information input from the outside on a disk-shaped recording medium in which absolute address information is pre-recorded. Address detection means for detecting and recognizing absolute address information pre-recorded on the disc-shaped recording medium, delimiter detection means for detecting delimiter of input audio information during recording standby or recording operation, and recording operation in progress In addition, the recording operation is temporarily stopped on the basis of the absolute address information from the address detection means that is recognized at the time when the division of the input audio information is detected by the division detection means. Is configured to include a control means for starting a recording operation when a division of input audio information is detected by In, when an instruction of the recording is given,
The amplitude of the input audio information is monitored along with the time axis, recording is started when a predetermined amplitude is detected in the input audio information, and the audio information is input at a predetermined amplitude or less. When it is detected that the recording is continuous for a time, the recording pause operation is executed, and the automatic recording start and end operations are performed at the correct timing when the actual music information content that is the recording source is judged. A disk recording device with good operability can be provided.

Further, since the recording pause operation is performed based on the absolute address information recognized immediately after the above detection time, even when continuous recording is performed thereafter, the unerased information remaining in the past is erased. It is possible to make a good recording without the occurrence of.

A disc recording apparatus according to a second aspect of the present invention is a recording apparatus for recording audio information input from the outside on a disc-shaped recording medium in which absolute address information is pre-recorded. Address detecting means for detecting and recognizing absolute address information pre-recorded on a recording medium, delimiter detecting means for detecting a delimiter of input audio information during recording standby or recording operation, and delimiter detecting means during recording operation The silent information recording is performed for a predetermined time by detecting the delimiter of the input audio information by, and the recording operation is temporarily stopped based on the absolute address information from the address detecting means which is recognized when the silent information recording is completed. On the other hand, when the break of the input audio information is detected by the break detecting means in the recording pause state, the recording operation is started. Since the configuration is characterized in that it has a control means for performing the start, when the recording instruction is given, the amplitude of the input audio information is monitored along with the time axis, and the input audio information is recorded. Recording is started when a predetermined amplitude is detected, and at the time when it is detected that the input audio information is equal to or less than the predetermined amplitude for a predetermined time, the silent information is recorded for a predetermined time, and then the recording is performed. Since the pause operation of is performed, the user can mainly perform operations on the audio supply device side even if he / she wants to record a desired song from various audio sources. It is possible to provide a disc recording device that realizes recording with start and end, and that can easily perform good recording with almost uniform silence time between songs as seen on a CD. .

[Brief description of drawings]

FIG. 1 is a block diagram of a recording device according to the present invention.

FIG. 2 is a flowchart showing a control procedure according to the recording apparatus of claim 1 of the present invention.

FIG. 3 is a flowchart showing a control procedure according to the recording apparatus of claim 2 of the present invention.

FIG. 4 is a schematic plan view of a magneto-optical disk.

FIG. 5 is an enlarged plan view of a magneto-optical disk.

FIG. 6 is a schematic plan view of a compact disc.

FIG. 7 is a schematic diagram showing a frame signal format of a compact disc.

FIG. 8 is a schematic diagram showing a sector format of a compact disc.

[Explanation of symbols]

 1 Magneto-optical disk 1a TOC area 1b Main information area 2 Guide groove 3 Spindle motor 4 Optical head 5 Reproduction amplifier 6 Pre-recorded information detection circuit 7 CLV control circuit 8 Address decoder 9 Controller 10 Reproduction signal processing circuit 11 D / A converter 12 Output Terminal 13 Subcode decoder 14 TOC memory 15 Timer 16 Operation key 17 Display 18 Input terminal 19 A / D converter 20 Silence circuit 21 Level detection circuit 22 Subcode encoder 23 Recording signal processing circuit 24 Coil driver 25 Coil Re Pre-recording information Pd 2 Quantized magneto-optical signal Ld Recording level signal 30 Compact disc 30a TOC area 30b Main information recording area 40 frames 40a Frame synchronization signal 40b Subcode 40c Data field 50 Sub Coding the frame 50a a frame synchronizing signal 50b sub-coding block 50c data field

Claims (2)

[Claims] 1. A recording device for recording audio information input from the outside to a disc-shaped recording medium in which absolute address information necessary for recording and reproduction is pre-recorded, wherein the recording device is pre-recorded in the disc-shaped recording medium. Address detection means for detecting and recognizing absolute address information, delimiter detection means for detecting delimiter of input audio information during recording standby or recording operation, and delimiter of input audio information by the delimiter detection means during recording operation. Pausing means for pausing the recording operation based on the absolute address information from the address detecting means, which is recognized at the time of detection, and in the recording pausing state, next to the audio information input by the break detecting means. When a break is detected, it is equipped with a control means to restart the recording operation from the absolute address paused above. Disk recording device, characterized in that the. 2. A recording device for recording audio information inputted from the outside to a disc-shaped recording medium, in which absolute address information necessary for recording and reproduction is pre-recorded, said pre-recorded on the disc-shaped recording medium. Address detection means for detecting and recognizing absolute address information, delimiter detection means for detecting delimiter of input audio information during recording standby or recording operation, and delimiter of input audio information by the delimiter detection means during recording operation. Silence information recording means for recording silence information for a predetermined time when detected, and pause of recording operation based on absolute address information from the address detection means recognized at the time of completion of the silence information recording. The pause means and, in the recording pause state, the next division of the input audio information is detected by the division detection means. When the issued, the disk recording apparatus comprising the resume control unit recording operation from the absolute address paused the one.