JPH11297048A - Optical disk, optical disk-recording apparatus and optical disk-reproducing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lessen a mute data required for a mute part by reproducing at a management data area a preset quantity of data from a leading end of one mute data recorded to a mute data area after an audio data is completely reproduced, and recording a management data for reproducing the other audio data. SOLUTION: After a certain track is recorded, a control part 14 starts counting a mute term when an operator presses a mute indication part 17, and stops counting the mute term when the operator hands off the mute indication part 17. The control part calculates an end address from a start address of the mute term and forms a management data. Each track is recorded with a mute part between the tracks being set with the use of the mute part 17. At this time, the tracks are consecutively recorded and a mute data is recorded together in a mute data area. A volume of data necessary for the mute data can thus be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to recording information on an optical disk having an audio data area for recording audio data and a management data area for recording management data for managing recording and reproduction of the audio data. The present invention relates to an optical disk recording device that performs the following.

[0002]

2. Description of the Related Art As one of recordable and reproducible optical disks, an optical disk having an audio data area for recording audio data and a management data area for recording management data for managing the audio data is known. .

Further, the audio data area includes audio data and a free area. The free area is an area in which an unrecorded area in which audio data is not recorded and an area which has been recorded but which is designated by the management data and which can be overwritten are combined. The management data manages where audio data is recorded in the audio data area and where the free area is.

As an example of such an optical disk, a mini disk is known. The mini-disc includes an audio data area including an area in which audio data such as music and voice are recorded and a free area, and a U-TOC.
A management data area called a (User-Table of Contents) area is provided.

[0005] Audio data, which is a group of music pieces, is managed as a track. Also, a block, which is a group of audio data continuously recorded on the mini-disc, is discretely recorded at two locations,
If audio data of these two blocks is continuously reproduced to obtain one musical piece, it is managed as one track.

For simplicity of description, description of a case in which there are a plurality of blocks is omitted, and one
The following describes a case where the audio data is recorded and managed as one track.

When there are two such tracks, there is a silent portion between the tracks. The silent portion allows the listener to discriminate the break between tracks audibly. For the sake of explanation, silent data is recorded and reproduced in the silent section.

When recording tracks on a mini disc,
In general, audio data, silent data, audio data, silent data,... Are repeatedly and alternately recorded.

However, there is an upper limit to the data capacity that can be recorded on a mini-disc. Therefore, in the minidisc, if the data capacity of the silent data is made as small as possible, the data capacity of the recordable audio data can be made larger.

However, it is not preferable that the silent portion is too short. The silence part is for making it easy to discriminate a break between tracks in an audible manner, and it is desirable to secure a period of about 1 to 15 seconds. There is a demand to increase the data capacity of audio data to be recorded on a mini-disc while securing a silent section.

In recent years, there has been a demand for freely changing a silent period in a silent section already provided on a mini disk. For example, the remaining data capacity of the minidisc is 3 minutes and 00 seconds, and the music to be recorded is 3 minutes.
In the case of minute 05 seconds, 5 seconds are insufficient. In such a case, the setting of the silent period in a plurality of silent sections is changed to secure the missing 5 seconds.

However, when such a setting is changed in a conventional mini-disc recording / reproducing apparatus, a silent portion of the mini-disc is reproduced, a track division point is found, a track is divided, and the track is divided. An operation of erasing the silent track was required, and the operation was time-consuming. There is a need for a mini-disc recorder that can change the silence period with a simple operation.

When a necessary time is secured in this way, a plurality of blocks are discretely formed to form one track, so that it is necessary to control the optical pickup to move at high speed, and it is necessary to perform recording and reproduction on a mini-disc. There is a drawback that a load is imposed on the device and a sound skip state is caused. There is a need for a mini-disc recording / reproducing apparatus that does not impose a burden on an optical pickup during reproduction by adjusting a silent period.

[0014]

SUMMARY OF THE INVENTION An object of the present invention is to provide an optical disk recording apparatus capable of reducing the amount of silent data required for a silent section and setting an arbitrary silent period.

[0015]

According to a first aspect of the present invention, there is provided an optical disk having an area in which a plurality of audio data are recorded and a silent data area in which one piece of silent data is recorded. In an optical disc having an audio data area and a management data area in which management data for managing the plurality of audio data and one piece of silence data are recorded, after the reproduction of a certain audio data is completed in the management data area, the It is characterized in that management data for reproducing a predetermined data amount from the beginning of one recorded silent data and reproducing other audio data is recorded.

According to a second aspect of the present invention, there is provided an optical disk, comprising: an audio data area including an area in which a plurality of audio data is recorded and an in silence data area in which one silence data is recorded; In an optical disc having a management data area in which management data for managing the silence data is recorded, after the reproduction of a certain audio data is completed in the management data area, from the beginning to the end of one silence data recorded in the silence data area Is reproduced once or repeatedly two or more times, and then a predetermined amount of data is reproduced from the beginning of one silence data,
It is characterized in that management data for reproducing other audio data is recorded.

Also, the optical disk recording apparatus according to the third aspect of the present invention provides an optical disk recording apparatus comprising: an area in which a plurality of audio data are recorded;
A recording unit that records an audio data area having a silence data area in which silence data is recorded, and an optical disc having a management data area in which management data for managing the plurality of audio data and one silence data is recorded;
After the reproduction of a certain audio data is completed, a predetermined amount of data is reproduced from the beginning of one silence data recorded in the silence data area, and management data for reproducing other audio data is recorded in the management data area. And a control unit for controlling the recording unit.

In the optical disk recording apparatus according to the fourth aspect, an area in which a plurality of audio data are recorded and one
A recording unit that records an audio data area having a silence data area in which silence data is recorded, and an optical disc having a management data area in which management data for managing the plurality of audio data and one silence data is recorded;
After the end of the reproduction of a certain audio data, 1 to 1 end of one silence data recorded in the silence data area is set to 1
The recording unit reproduces once or twice or more times, then reproduces a predetermined amount of data from the beginning of one silence data, and records management data for reproducing other audio data in the management data area. A control unit for controlling;
It is characterized by having.

According to a fifth aspect of the present invention, in the optical disk recording apparatus according to the third or fourth aspect, the optical disk recording apparatus further comprises a setting change unit for changing a setting of a silent period between the audio data. The control unit controls the recording unit to record the management data for the silent period set by the setting change unit in a management data area of the optical disc.

An optical disk recording device according to a sixth aspect is the optical disk recording device according to the fifth aspect,
The control unit controls the recording unit to set a silence data area that secures the silence data for a predetermined period in an audio data area of the optical disc, and the setting is changed by the setting change unit. When the silence data required during the silence period is larger than the data amount secured in the silence data area, an extended silence data area is added to the silence data area, and silence data is read from the start address of the enlarged silence data area. The recording unit is controlled to record management data in a management data area of the optical disc.

According to a seventh aspect of the present invention, in the optical disk recording apparatus according to the fifth aspect,
The control unit controls the recording unit to set a silent data area that secures the silent data for a predetermined period in an audio data area of the optical disc, and the setting is changed by the setting change unit. If the silence data required during the silence period is larger than the data amount secured in the silence data area, an additional silence data area is set in an area different from the silence data area to compensate for the lack of the silence data, and the silence data After reading the silence data from the start address of the area to the end address, the recording unit is controlled to record management data for reading the silence data from the start address of the additional silence data area in the management data area of the optical disc. It is characterized by doing.

An optical disk recording apparatus according to claim 8 is the optical disk recording apparatus according to claim 5,
The control unit controls the recording unit to set a silent data area that secures the silent data for a predetermined period in an audio data area of the optical disc, and the setting is changed by the setting change unit. When the silence data required during the silence period is larger than the data amount secured in the silence data area, the management data for reproducing the audio data after repeatedly reproducing the silence data having the same start address a plurality of times is managed by the optical disc. The recording unit is controlled to record data in a data area.

In the optical disk reproducing apparatus according to the ninth aspect, an area in which a plurality of audio data are recorded and one
The audio data and the silence data from the optical data area having the silence data area in which the silence data is recorded and the management data area in which the management data for managing the plurality of audio data and the silence data are recorded. A reproducing unit that reproduces a predetermined amount of data from the beginning of one silence data recorded in the silence data area after the end of the reproduction of a certain audio data based on the management data; A control unit for controlling the reproduction unit to reproduce the audio data.

An optical disk reproducing apparatus according to claim 10, wherein the audio data area includes an area in which a plurality of audio data is recorded, an audio data area in which one silence data is recorded, and the plurality of audio data. And a reproducing unit for reproducing the audio data and the silent data from an optical disc having a management data area in which management data for managing the silent data of the first and the second are recorded. Reproduces once or repeatedly two or more times from the beginning to the end of one silence data recorded in the silence data area, reproduces a predetermined amount of data from the beginning of the one silence data, A control unit for controlling the reproduction unit to reproduce the audio data.

[0025]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram of a mini disc recording / reproducing apparatus as an embodiment of the optical disc recording apparatus and the optical disc reproducing apparatus according to the present invention, and FIG. 2 is a block diagram showing silence included in an audio data area of the mini disc. FIG. 3 is an explanatory diagram showing a track recorded by an operator and a recording order of a silent section set by an operator. FIG. 4 is a diagram showing a track and a silent data area provided in an audio data area of a mini-disc. FIG. 2 shows an arrangement diagram of silence data provided in the.

FIG. 5 is a structural diagram of management data recorded in the U-TOC area of the mini-disc, FIG. 6 is an explanatory diagram for explaining a change in the end address accompanying a change in the silent period of the silent section 1, and FIG. FIG. 8 is an explanatory diagram for explaining a change in each address of the silence data area due to a change in the silence period of the silence section 2, and FIG.
FIG. 9 is an explanatory diagram illustrating a change in the address of the silent data area according to a change in the silent period of the silent section 2. FIG. 9 is an explanatory view illustrating a change in the address of the silent data area according to the change in the silent period of the silent section 2. is there. Hereinafter, the mini disc recording / reproducing apparatus of this embodiment will be described with reference to FIGS.

A recording system of a mini disc recording / reproducing apparatus which is an embodiment of the optical disc recording apparatus and the optical disc reproducing apparatus of the present invention will be described. In order to convert the input analog audio signal into EFM data, the mini disc recording / reproducing apparatus of the present embodiment is referred to as a low-pass filter (hereinafter, referred to as LPF) 1 and an analog / digital converter (hereinafter, referred to as an A / D converter). ) 2, ATRAC (Ad
aptive TRansform Acoustic Coding) encoder 3, shockproof memory system controller 4,
RAM (Random Access Memory) 5, EFM (Eight to
Fourteen Modulation) encoder 6 is provided.

Further, in order to record the EFM data on the mini disc 7, a magnetic head drive circuit 8, a magnetic head 9, an optical pickup 10, a motor 11, a reproduction amplifier 12, and a servo control circuit 13 are provided. In addition, the control unit 14
In order to record EFM data on the mini-disc 7, the above-mentioned components are controlled.

Also, in order to convert an analog audio signal input to the mini-disc recording / reproducing device into EFM data and record it on the mini-disc 7, a recording instructing unit 15 for instructing recording of a track, a reproducing instructing unit, a stop instructing unit An operation instruction unit 16 having buttons including a track forward search instruction unit, a track reverse search instruction unit, and a pause instruction unit; a mute instruction unit 17 for providing a silent section after recording a track; A setting change unit 18 to be performed and a display unit 19 for displaying various information are connected to the control unit 14. The recording system is configured as described above.

Next, control of the recording system will be described. When an analog audio signal recording instruction input through the recording instruction unit 15 connected to the control unit 14 is input,
The control unit 14 outputs a control signal for controlling the operation of each unit to the servo control circuit 13. The servo control circuit 13 includes a focus servo control circuit, a tracking servo control circuit,
It is composed of a motor servo control circuit, a slide servo control circuit and the like.

The focus servo control circuit and the tracking servo control circuit make the optical pickup 1 so that the laser beam follows the recording guide groove of the mini disc 7 correctly.
By controlling the focus actuator and the tracking actuator of No. 0, a lens (not shown) is driven.

The slide servo control circuit outputs a control signal to a slide motor (not shown),
0 and the magnetic head 9 are moved. The motor servo control circuit outputs a control signal to the motor 11 and
Is controlled at a constant linear velocity.

At the time of recording on the mini disk 7, the magnetic head 9 is
, A modulation magnetic field corresponding to the EFM data output from the EFM encoder 6 is output.

At the same time, an optical pickup 10 provided at a position facing the magnetic head 9 with the mini disc 7 interposed therebetween.
Outputs a high-power laser that heats the recording layer of the mini-disc 7. With this, E
FM data is recorded.

A photodiode (not shown) converts the reflected light returned from the mini disk 7 into a detection signal which is an electric signal, and the photodiode outputs the detection signal to the reproducing amplifier 12. The reproduction amplifier 12 separates the focus error signal, the tracking error signal, or the synchronization signal recorded in the pre-groove from the detection signal, and outputs the signal to the servo control circuit 13. Servo control circuit 1
3 outputs a control signal. The recording system is controlled in this way.

Next, the signal processing of the recording system will be described. A recording instruction is input from the recording instruction unit 15 to start recording. The input analog audio signal is LPF1
Is input to LPF1 is 1/1 of the sampling frequency.
It has a cut-off characteristic of blocking two or more high frequency components, and is provided to prevent generation of aliasing noise during A / D conversion. The LPF 1 outputs the low-pass analog audio signal to the A / D converter 2.

The A / D converter 2 samples the low-pass analog audio signal at a predetermined sampling frequency (for example, 44.1 kHz), quantizes it with a predetermined number of bits, and generates digital audio data. The A / D converter 2 converts the digital audio data into ATRAC
Output to encoder 3.

The ATRAC encoder 3 performs ATRAC data compression on the digital audio data to generate digitally compressed audio data. AT
The RAC encoder 3 converts the digital compressed audio data into a shock-proof memory system controller 4.
Output to

The shock-proof memory system controller 4 outputs digital compressed audio data to the RAM 5, and outputs digital compressed audio data to the EFM encoder 6 according to an instruction from the control unit 14.

The EFM encoder 6 encodes the digitally compressed audio data to generate EFM data, and supplies the EFM data to the magnetic head drive circuit 8.
The magnetic head drive circuit 8 drives the magnetic head 9 so as to apply a modulation magnetic field according to the EFM data to the mini disc 7.

The control unit 14 controls the shock proof memory system controller 4 to store the digital compressed audio data in the RAM 5, and transmits the EFM data output from the EFM encoder 6 to the recording guide of the mini disc 7. It instructs the servo control circuit 13 to control the position to be recorded in the groove.

When a recording stop is instructed from the stop instructing unit in the operation instructing unit 16, the control unit 14 completes the recording process of the EFM data input up to that point, and then manages the mini disc 7 The recording system is controlled to record management data such as track names and time information in the data area.
The signal processing of the recording system is performed in this manner.

Next, a reproducing system of the mini disk recording / reproducing apparatus of this embodiment will be described. Minidisk 7 to E
In order to reproduce FM data, the mini disc recording / reproducing apparatus includes an optical pickup 10, a motor 11, a reproducing amplifier 12
Is provided.

In order to convert the EFM data into an analog audio signal, the EFM decoder 20, the shock-proof memory system controller 4, the RAM 5,
A TRAC decoder 21, a digital / analog converter (hereinafter, referred to as a D / A converter) 22, and an LPF 23 are provided. Further, the control unit 14 controls each of the above-described components in order to reproduce an analog audio signal. The reproduction system is configured as described above.

Next, the control of the reproducing system will be described. The reproduction of the EFM data from the mini disc 7 is performed by a laser light source,
An optical pickup 10 including a photodiode or the like irradiates a laser beam emitted from a laser light source to a mini disc 7, and the return light reflected from the mini disc 7 is detected by the photodiode to output a detection signal as an electric signal. It is done by doing.

For reproduction, the recording guide groove of the mini disc 7 is
The laser beam emitted by the optical pickup 10 follows, and the optical pickup 10 receives the reflected light.
A photodiode (not shown) in the optical pickup 10 outputs a detection signal read by the laser beam irradiated to the recording guide groove to the reproduction amplifier 12.

The reproduction amplifier 12 separates a focus error signal and a tracking error signal from the detection signal and outputs the signal to the servo control circuit 13. Also, the reproduction amplifier 12
The high-frequency signal output from the optical pickup 10 is binarized into EFM data and output to the EFM decoder 20.

The focus servo control circuit and the tracking servo control circuit of the servo control circuit 13 control the focus actuator and the tracking actuator of the optical pickup 10 so as to guide the laser beam to the recording guide groove of the mini disk 7, and a lens (not shown) Drive.

The motor servo control circuit of the servo control circuit 13 controls the rotation of the motor 11 so as to rotate the mini disk 7 at a predetermined rotation speed. The slide servo control circuit controls a slide motor (not shown) to reproduce a target track from the tracks of the mini disc 7 and moves the optical pickup 10. Reproduction control is performed in this manner.

Next, the signal processing of the reproduction system will be described. When a reproduction instruction for reproducing a certain track of the mini disc 7 is input from the operation instruction unit 16, the control unit 14
Reads the management data in the management data area of the mini disk 7, controls the position of the optical pickup 10 by the servo control circuit 13 so that desired information data is read based on the management data, and performs reproduction.

The high-frequency signal output from the optical pickup 10 is binarized by the reproduction amplifier 12 to become EFM data, which is supplied to the EFM decoder 20. The EFM decoder 20 decodes the EFM data to generate digital compressed audio data, and supplies the digital compressed audio data to the RAM 5 through the shockproof memory system controller 4.

The writing and reading of data to and from the RAM 5 are performed by the shock-proof memory system controller 4. The RAM 5 has an EFM decoder 20
The digital compressed audio data output from is stored. The digital compressed audio data written in the RAM 5 is output to the ATRAC decoder 21 at a timing required by the ATRAC decoder 21.

The ATRAC decoder 21 expands the digital compressed audio data output from the RAM 5 into digital audio data. The expanded digital audio data is converted by the D / A converter 22 into an analog audio signal. An analog audio signal obtained from the D / A converter 22 is an LPF 23
Is output via. The reproduction operation is performed in this manner. Such a recording system and a reproducing system will be described below.
00 will be described collectively.

Next, the setting of the silent section will be described. When an unused mini-disc 7 is mounted on the recording / reproducing unit 100, a silent data area is secured in the audio data area of the mini-disc 7. At this time, the start address A and the end address B of the silent data in the silent data area are recorded in the management data.

The data amount of the silent data is set in advance so that the silent portion between the tracks can be reproduced, for example, for 10 seconds. Actually, a start address A and an end address B for securing silent data for 10 seconds are stored in a memory (not shown) of the control unit 14 in advance. The control unit 14 reads the start address A and the end address B from the memory, and sets the start address A and the end address B of the silent data. The time of 10 seconds can be changed, and an arbitrary value can be selected.

FIG. 2 is a layout diagram of the silent data area and the silent data included in the audio data area of the mini-disc. In this embodiment, a silent data area is secured in the area near the outer periphery of the mini-disc. However, the present invention can be implemented even if the silent data area is provided in the area near the inner circumference of the mini disc or other areas.

Next, recording of a track and setting of a silent portion will be described. FIG. 3 is an explanatory diagram showing a track recorded by an operator and a recording order of silence portions set. FIG. 4 is a layout diagram of tracks provided in an audio data area of a minidisk and silence data provided in a silence data area. FIG.
FIG. 3 is a structural diagram of management data recorded in a U-TOC area of a mini disc.

When the operator presses the mute instruction unit 17 after recording the track a, the control unit 14 starts measuring a silent period. Then, when the mute instruction unit 17 is released, the control unit 14 stops measuring the silent period.

If the silence period is 4 seconds, the control unit 14 starts calculating the end address which becomes silence data for 4 seconds from the start address A. The control unit 14 calculates an end address E as a calculation result.

The track a is a block composed of a start address C and an end address D, and the silent section 1 is a block composed of a start address A and an end address E. These two blocks are combined to create management data to be track 1 which is one track, and are temporarily stored in the memory area of the control unit 14.

In this way, while using the mute instruction unit 17 to set a silent section between tracks,
Track b, track c, and track d are recorded. Recording is performed in the recording order as shown in FIG.

At this time, the arrangement of the tracks provided in the audio data area of the mini-disc and the silent data provided in the silent data area is as shown in FIG.
Track a, track b, track c and track d are recorded continuously. And silent section 1 to silent section 4
Is recorded collectively in the silent data area.

Here, as the management data, the start address C
And management data, a track consisting of a start address F and an end address G, which is a track 1 including two blocks of a track a consisting of an end address D and two blocks of a 4-second silent section 1 consisting of a start address A and an end address E. b, the management data for the track 2 including two blocks of the silent section 2 of 10 seconds each including the start address A and the end address B, the block of the track c including the start address H and the end address I, and the start address A And two pieces of the 6-second silence section 3 including the end address J and the track 3 as management data, a track d block including a start address K and an end address L, and a start address A and an end address H2. The management data is created as a track 4 by combining two blocks of the silence part 4 in seconds, and is temporarily stored. And stored in the memory area of the controller 14.

In this management data, the silent section 1 after the reproduction of the track a, the silent section 2 after the reproduction of the track b, the silent section 3 after the reproduction of the track c, or the silent section 3 after the reproduction of the track d is completed. Each of the sections 4 is reproduced, and the silent sections 1 to 4 have the same start address A.

When the track is reproduced, the silent data area in which the common silent data is recorded is accessed to reproduce the silent data. Therefore, the data capacity required for the silent data is reduced, and the audio data can be recorded relatively. The data capacity can be increased.

FIG. 5 is a structural diagram of management data recorded in the U-TOC area of the mini disc. In the track address slot pointer P-TNO1, a value for reading the head of the address slot 78 is recorded.

The start address C and the end address D of track a, which is the first block of track 1, are recorded from the beginning of address slot 78. A value for reading the head of the address slot 80 is recorded as a link pointer.

From the beginning of the address slot 80, the start address A of the silent section 1 which is the second block of the track 1
And the end address E are recorded. TRACKEND data indicating the end of the track is recorded as a link pointer. Hereinafter, tracks 2 to 4 are also recorded in the same manner, so that illustration is omitted.

Reproduction is performed based on management data.
When the reproduction instruction section in the operation instruction section 16 is pressed, the management data recorded on the mini disc 7 is read and reproduced. For reproduction, as shown in FIG. 3, track a and silent part 1 are used as track 1, and track b is used as track 2.
Track c and silent section 3 as track 3
Is reproduced as the track 4 and the track d and the silent section 4 are reproduced.

Next, a description will be given of the change adjustment of the silent period of the silent portion once recorded. First, a first operation for reducing a silent period will be described. If the user wants to adjust the silent period of the silent section, the management data is changed. For example, silence 1
If the user wants to change and adjust the silence period of 4 seconds to the silence period of 3 seconds, the setting change unit 18 issues an instruction to change the silence period of the silence unit 1 to 3 seconds.

FIG. 6 is an explanatory diagram for explaining the change of the end address of the silent section 1. The control unit 14 includes a setting change unit 18
Instructs the recording / reproducing unit 100 to rewrite the end address E of the silence data in the silence section 1 from the end address E ′, and rewrites the management data of the mini disc 7 in response to the instruction from.

The change of the silent period is adjusted by rewriting the management data end address E to the end address E '. Since the silence data area secures silence data of 10 seconds, the change adjustment of the silence period within 10 seconds can be performed only by rewriting the end address of the silence part.

However, the silent period of 10 seconds of the silent section 2 is set to 1
If the user wants to adjust to the silence period of 3 seconds, it cannot be coped with only by changing the end address. To extend the silent period exceeding 10 seconds, three operations described below can be selected.

The second operation for extending the silent period will be described. FIG. 7 is an explanatory diagram for explaining the change of each address in the silent data area in accordance with the change of the silent section 2. For example, when the setting changing unit 18 instructs to change the silence period of the silence unit 2 from 10 seconds to 13 seconds, the control unit 14
Changes the start address A of the silence data area to the start address A ′ in accordance with an instruction from the setting change unit 18 to generate an enlarged silence data area.

At this time, the silence data from the start address A 'to the end address B of the enlarged silence data area has a silence period of 13 seconds. Further, since the start address A 'is also a common start address for each silence data, the end address of each silence portion other than the silence portion 2 is adjusted so that the silence period is constant.

The end address E of the silent section 1 is the end address E ', and the end address J of the silent section 3 is the end address J'.
Then, the end address H of the silent section 4 is changed to the end address H '. However, the end address B of the silent section 2 is not changed.

Next, a third operation which is another operation for extending the silent period will be described. FIG. 8 is an explanatory diagram for explaining the change of each address in the silent data area in accordance with the change of the silent section 2. When the setting change unit 18 instructs to change the silence period of the silence unit 2 from 10 seconds to 13 seconds, the control unit 14 responds to the instruction from the setting change unit 18 to add the additional silence from the start address X to the end address Y. Create a data area. At this time, the silence data from the start address X to the end address Y of the additional silence data area has a silence period of 3 seconds.

Further, when reproducing the silent section 2, management for continuously reproducing a block 1 consisting of a start address A and an end address B and a block 2 (additional silent data area) consisting of a start address X and an end address Y. Generate data.

In FIG. 8, a 3-second silence portion consisting of a start address X and an end address Y is added. Such a second or third operation is possible when there is a free area in the audio data area.

When there is a free area, the setting can be changed by the first and second operations. However, there are many recorded tracks and there is no free area. In such a case, a fourth operation for extending the silent period of the silent section will be described.

When the setting change unit 18 instructs to change the silence period of the silence unit 2 from 10 seconds to 13 seconds, the control unit 14 transmits the following management data in accordance with the instruction from the setting change unit 18. change.

FIG. 9 is an explanatory diagram for explaining the change of each address of the silent data area in accordance with the change of the silent section 2. The changed management data becomes management data for continuously reproducing the block 1 including the start address A and the end address B and the block 2 including the start address A and the end address N when the silent section 2 is reproduced. In other words, the silence data in the silence data area is repeatedly reproduced to avoid the extension of the silence data area.

In FIG. 9, an end address N is added. Such an operation is necessary when there is no free area in the audio data area. In the fourth operation, once the silence data area is set, there is no need to change the silence data area. Therefore, it is not necessary to stick to the outer circumference of the audio data area of the minidisk, but to the inner circumference of the audio data area of the minidisk. A silent data area may be provided, and audio data may be recorded subsequently.

The control unit 14 instructs the recording / reproducing unit 100 to record the management data generated by the first to fourth operations as described above, and rewrites the management data of the mini disc. The adjustment of the silent period is performed in this manner.

As described above, in the mini-disc recording / reproducing apparatus of this embodiment, the data capacity that can be recorded on the mini-disc can be increased without affecting the silent period of the silent section. Also,
Even after the recording is completed, the silent period of the silent section can be easily set freely. In addition, even after the adjustment, a plurality of small blocks are discrete and do not form one track, so that control such as moving the optical pickup at high speed is avoided, and a mini-disk device that is resistant to sound skipping is not burdened. A disk recording / reproducing device can be provided.

[0086]

According to the present invention, it is possible to provide an optical disk recording apparatus capable of reducing silent data required for a silent section and setting a silent section for an arbitrary silent period.

[Brief description of the drawings]

FIG. 1 is a block diagram of a mini disc recording / reproducing apparatus which is an embodiment of an optical disc recording apparatus and an optical disc reproducing apparatus according to the present invention.

FIG. 2 is a layout diagram of silence data in a silence data area included in an audio data area of a minidisk.

FIG. 3 is a configuration diagram showing a recording order of tracks recorded by an operator and a set silent section.

FIG. 4 is a layout diagram of tracks provided in an audio data area of a minidisk and silence data provided in a silence data area.

FIG. 5 is a structural diagram of management data recorded in a U-TOC area of the mini disc.

FIG. 6 is an explanatory diagram for explaining a change of an end address of the silent section 1;

FIG. 7 is an explanatory diagram illustrating a change in each address of a silent data area in accordance with a change in a silent section.

FIG. 8 is an explanatory diagram illustrating a change in the address of a silent data area in accordance with a change in the silent section 2.

FIG. 9 is an explanatory diagram illustrating a change in the address of a silent data area in accordance with a change in a silent section.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... LPF 2 ... A / D converter 3 ... ATRAC encoder 4 ... Shockproof memory system controller 5 ... RAM 6 ... EFM encoder 7 ... Mini disk 8 ... Magnetic head drive circuit 9 ... Magnetic head 10 ... Optical pickup 11 ... Motor 12 ... Reproduction amplifier 13 ... Servo control circuit 14 ... Control unit 15 ... Record instruction unit 16 ... Operation instruction unit 17 ... Mute instruction unit 18 ... Setting change unit 19 ... Display unit 20 ... EFM decoder 21 ... ATRAC decoder 22 ... D / A conversion Device 23 ... LPF

Claims (10)

[Claims] An audio data area including an area in which a plurality of audio data is recorded and a silence data area in which one silence data is recorded, and management data for managing the plurality of audio data and the one silence data are recorded. An optical disc having a management data area, wherein after a certain audio data has been reproduced in the management data area, a predetermined data amount is reproduced from the beginning of one piece of silence data recorded in the silence data area. An optical disc characterized by recording management data for reproducing said audio data. 2. An audio data area including an area in which a plurality of audio data is recorded and an in silence data area in which one silence data is recorded, and management data for managing the plurality of audio data and one silence data. In an optical disc having a recorded management data area, in the management data area, after the reproduction of a certain audio data is completed, the first to last of one silence data recorded in the silence data area is repeated once or twice or more. An optical disc characterized by recording and reproducing management data for reproducing a predetermined amount of data from the beginning of one silence data and reproducing other audio data. 3. An audio data area having an area in which a plurality of audio data is recorded and a silence data area in which one silence data is recorded, and management data for managing the plurality of audio data and the one silence data are recorded. A recording unit for recording on an optical disc having a management data area, and after the end of reproduction of certain audio data, reproducing a predetermined amount of data from the beginning of one piece of silence data recorded in the silence data area, An optical disc recording apparatus, comprising: a control unit that controls the recording unit to record management data for reproducing audio data in the management data area. 4. An audio data area including an area in which a plurality of audio data is recorded and an in silence data area in which one silence data is recorded, and management data for managing the plurality of audio data and the one silence data. A recording unit for recording on an optical disk having a recorded management data area; after the end of reproduction of a certain audio data, one to one end of one silence data recorded in the silence data area is set to one.
The recording unit reproduces once or twice or more times, then reproduces a predetermined amount of data from the beginning of one silent data, and records management data for reproducing other audio data in the management data area. A control unit for controlling;
An optical disk recording device comprising: 5. The optical disc recording apparatus according to claim 3, further comprising: a setting change unit that changes a setting of a silence period between the audio data, wherein the control unit is set by the setting change unit. An optical disk recording apparatus, wherein the recording unit is controlled to record the management data for the silent period in a management data area of the optical disk. 6. The optical disk recording apparatus according to claim 5, wherein the control unit sets the recording so as to set a silent data area for securing the silent data for a predetermined period in an audio data area of the optical disk. Controlling the unit, if the silence data required for the silence period whose setting has been changed by the setting change unit is larger than the data amount secured in the silence data area, add an enlarged silence data area to the silence data area An optical disc recording apparatus, wherein the recording unit is controlled to record management data for reading out silence data from a start address of the enlarged silence data area in a management data area of the optical disc. 7. The optical disc recording apparatus according to claim 5, wherein the control unit sets the recording so as to set a silence data area for securing the silence data for a predetermined period in an audio data area of the optical disc. Controlling the unit, if the silence data required for the silence period whose setting has been changed by the setting change unit is larger than the data amount secured in the silence data area, the silence data in an area different from the silence data area Management data such that an additional silence data area is set up to compensate for the shortage, and after reading the silence data from the start address to the end address of the silence data area, the silence data is read from the start address of the additional silence data area. Controlling the recording unit to record the data in a management data area of the optical disc. Click recording device. 8. The optical disk recording device according to claim 5, wherein the control unit sets the recording to set an audio data area for securing the audio data for a predetermined period in an audio data area of the optical disk. Controlling the unit, if the silence data required for the silence period whose setting has been changed by the setting change unit is larger than the amount of data secured in the silence data area, the same silence data having the same start address is repeated a plurality of times. An optical disc recording apparatus, wherein the recording unit is controlled so that management data for reproducing the audio data after repeated reproduction is recorded in a management data area of the optical disc. 9. An audio data area having an area in which a plurality of audio data is recorded and a silence data area in which one silence data is recorded, and management data for managing the plurality of audio data and one silence data are recorded. A reproduction unit that reproduces the audio data and the silent data from an optical disc having the specified management data area; and, based on the management data, after one audio data has been reproduced, one silence recorded in the silent data area. An optical disc reproducing apparatus comprising: a control unit that reproduces a predetermined amount of data from the beginning of data and controls the reproducing unit to reproduce other audio data. 10. An audio data area having an area in which a plurality of audio data is recorded and an in silence data area in which one silence data is recorded, and management data for managing the plurality of audio data and one silence data. A reproduction unit that reproduces the audio data and the silent data from an optical disc including a recorded management data area,
Based on the management data, after the end of the reproduction of a certain audio data, one to one end of the one silence data recorded in the silence data area is reproduced once or repeatedly twice or more, and then one of the silence data is reproduced. An optical disc reproducing apparatus comprising: a control unit that controls the reproducing unit so as to reproduce a predetermined amount of data from the beginning and reproduce other audio data.